JP5814307B2 - Cooking device and cooking device - Google Patents

Description

  The present invention relates to a heating cooker that performs cooking such as baking and steaming on an object to be heated such as cooking ingredients housed in the cooking chamber by heating the cooking chamber with a heating element.

2. Description of the Related Art Conventionally, a cooking device such as a so-called roaster that includes a cooking chamber for storing an object to be heated and heating means is known. In such a heating cooker, cooking is performed using radiation from heating means and heat transfer using air or a cooking table as a medium.
One of the functions of such a heating cooker is double-sided baking. This double-sided baking is to cook the whole including the upper and lower surfaces of the object to be heated placed on the cooking table without the user having to turn over the object to be heated. In order to reduce the user's domestic work, a heating cooker having such a double-sided baking function is generally used.

  As a general method for realizing double-sided baking, there is known a method in which heating means such as a heater is provided above and below an object to be heated placed on a cooking table in a cooking chamber. In such a heating cooker, while heating the object to be heated by radiation from above and below the object to be heated, the temperature in the cooking chamber is increased and the temperature of the object to be heated is increased by heat transfer via air, The whole object to be heated is cooked.

  In a heating cooker having a heating means (hereinafter also referred to as a downward heating means) provided below the object to be heated as described above, it is heated when a food containing oil or the like is heated as the object to be heated. Thus, the oil and fat can be dripped from the object to be heated. There is a possibility that smoke or ignition may occur when the dropped oil or fat comes into contact with the lower heating means or the oil or fat accumulated in the tray is heated by the lower heating means. If smoke or ignition occurs, there is a problem that the taste of the object to be heated is impaired, and an excessive load is applied to the heating cooker to shorten the product life. In addition, when the juice containing oil, fat, salt, moisture, etc. dripping from the object to be heated comes into contact with the lower heating means, the surface of the lower heating means is corroded, resulting in poor insulation, disconnection, etc. There are also defects that are spoiled. Further, in order to obtain an appropriate cooking effect (bake up and down), it is necessary to provide a distance between the downward heating means and the object to be heated. Under such circumstances, more space is required above and below the lower heating means, and the ratio of the upper and lower space dimensions of the lower heating means tends to be high in the height dimension of the cooking chamber.

Furthermore, such a cooking device may be used for a built-in cooking device such as a so-called IH cooking heater or a gas table that is incorporated in a kitchen counter. Generally, the cooking device incorporated in the counter of the kitchen is modularized, and its height dimension is standardized. For example, the height of the cooking device is about 230 mm, and the cooking device is assembled so as to be within a depth of about 220 mm from the upper surface of the kitchen counter.
While the height of the cooking device is limited in this way, for example, cooking a relatively large fish, such as salmon, or a thick (large height) object to be heated, such as bread or sponge cake Is also sought by users. That is, in a cooking device having a cooking chamber, it is desired to increase the height of the cooking chamber so that an object to be heated can be cooked as thick as possible (having a large height).

  As described above, while it is desired to increase the height of the cooking chamber so that a thick heated object can be cooked, more space is required above and below the lower heating means, and built-in heating is also required. In the case of a cooker, the height dimension is further restricted. Therefore, as a result, the height of the object to be heated that can be heated in the cooking chamber is limited, which limits the cooking ability of the cooking device.

  In general, it is not easy for the user to attach and detach the lower heating means, and maintenance such as cleaning of the cooking chamber is performed with the lower heating means attached. However, since the height dimension in the cooking chamber is limited as described above, the distance between the lower heating means and the bottom surface of the cooking chamber tends to be narrow. Therefore, it is difficult to put a hand between the lower heating means and the bottom surface of the cooking chamber, and the cleaning property of the bottom surface of the cooking chamber is particularly deteriorated.

In order to solve these problems, a heating chamber is provided separately from the cooking chamber, and the cooking is performed by heating the food by circulating the heat from the heating chamber to the cooking chamber without the upper and lower heaters. A device has been proposed (see, for example, Patent Document 1).
In addition, a cooking device has been proposed in which the lower heating means is not arranged in the cooking chamber (see, for example, Patent Document 2).

JP 2009-284926 A (page 3, page 6, FIG. 1) JP 2010-115473 A (5th page, 12th page, FIG. 1)

However, in the above-described cooking of Patent Document 1, no specific means for realizing appropriate heating through air is disclosed. That is, Patent Document 1 states that “the air in the cooking chamber 11 is sucked by the ventilation means 13 through the gas inlet 14 and blown to the heating means 12 of the heating chamber 11. The hot air heated in 11 is supplied through the gas outlet 15. "However, the suction port and the outlet are arranged on the same cooking chamber wall surface, and both are close to each other. Therefore, the airflow blown out from the blowout port is easily sucked into the suction port immediately and may not be a convective flow while circulating through the entire cooking chamber.
In addition, heating conditions such as temperature and flow rate are different between the vicinity of the wall surface of the cooking chamber where the blower outlet is provided and the wall surface opposite to the wall surface, and a uniform heating / cooking effect cannot be obtained. There is a problem.

  Moreover, in the cooking of the said patent document 1, the heat transfer which made the air the medium is a main body. For this reason, it takes time to increase the temperature in the cooking chamber due to the heat capacity of the air in the cooking chamber and the heat capacity of the components constituting the cooking chamber and the heat loss due to heat radiation to the outside of the cooking chamber. This is slower than when heat transfer by radiation is used together. Therefore, due to the delay in coagulation of proteins on the surface layer of the heated object, the surface is crispy and it is difficult to obtain a good taste and cooking effect of moist and juicy, and the moisture of the entire heated object tends to volatilize However, there is also a problem that the finish is not good with patty taste.

  In Patent Document 2, (1) a lower heating means is covered with a soaking plate, a cooking heating plate serving as a cooking table and a saucer is disposed on the soaking plate, and an object to be heated is placed thereon. (2) A steam duct and a circulation fan are provided, the lower heating means is covered with a soaking plate, a saucer and a grill as a cooking table are provided on the soaking plate, A configuration is shown in which an object to be heated is placed on a cooking table and heated steam is circulated to perform cooking.

  In the configuration of (1) in Patent Document 2, the lower surface of the object to be heated is heated by heat conduction by contact from the soaking plate, so that a certain contact area is required. Therefore, the contact surface of the object to be heated with the soaking plate has a cooking effect / finish similar to cooking with a frying pan or the like. For this reason, there is a possibility of a sticky texture due to the sap of oil etc. from the heated object, and it is difficult to obtain a good cooking effect / finish, cooking effect / finish when cooking using a grill There is a problem that it is difficult to obtain a cooking effect / finishing that substitutes for the taste of the user who expects.

  Further, the heat transfer path is long until the heating of the lower heating means is transmitted to the object to be heated. That is, heat transfer from the lower heating means to the air layer between the soaking plates, heat conduction in the soaking plate, heat transfer from the soaking plate to the cooking plate contact portion, and soaking of the cooking plate It becomes a path of heat conduction from the heat heating plate contact part to the object to be heated and heat transfer from the cooking heating plate to the object to be heated, and since there are many thermal resistances, heating of the object to be heated becomes slow. . For this reason, there is a delay in coagulation of the protein on the surface layer of the heated object, and the juiciness is lost due to the outflow of the juice containing the umami component such as gravy. This can further increase the texture. Therefore, it is difficult to obtain a good cooking effect / finish, and the disadvantage that it is difficult to obtain a cooking effect / finish that replaces the taste of the user who expects the cooking effect / finish when cooking using a grill net is said to increase. There was a problem.

  Moreover, since it takes time to heat up the cooking heating plate and the cooking chamber, the cooking time becomes longer, and the time that the user spends on housework increases, which goes against labor saving of housework. Patent Document 2 discloses a loss by adjusting the overall balance regarding the heating efficiency of the heated object in the configuration in which cooking is performed by indirectly heating the heating plate for cooking through the soaking plate. Although there is a description that can be kept to a minimum, the loss due to heat leakage accompanying the extension of cooking time increases, so a decrease in heating efficiency is inevitable, and the amount of power consumption also increases, increasing the environmental load There is a problem.

  In addition, since many structures are necessary to transmit the heat from the lower heating means to the object to be heated, the air layer, the soaking plate, and the heating plate for cooking each have a certain thickness or more in order to function properly. (Height dimension) is required and they are stacked. Therefore, the height dimension of the lower heating unit can be suppressed and reduced so that a thick object to be heated can be stored and the effective cooking chamber height capable of obtaining an appropriate cooking effect can be sufficiently expanded. There was a problem that the flooring effect could not be obtained.

  Moreover, in the structure of said (2) of patent document 2, since a saucer and a grill are further mounted on the downward heating unit of the structure of said (1), a to-be-heated material is mounted on it, (1 ), The height of the cooking chamber in which the object to be heated can be accommodated is further reduced, the thickness of the object to be heated is restricted to be thinner, and the cooking range of the heat cooking is narrowed. is there.

  Also, considering the suppression of oil and fat ignition in the saucer, the temperature of the soaking plate can only be raised up to about 300 ° C, and the members constituting the grill net are thin and sufficient contact area is not secured There are also problems such as the possibility that the grill does not sufficiently contribute to the heating of the object to be heated. That is, the configuration (2) of Patent Document 2 requires cost and space, but may not function sufficiently as a heating unit.

Moreover, since it is the heating cooking using superheated steam, the to-be-heated object has the quick temperature rising time to 100 degreeC which is the condensation temperature of water. However, at 100 ° C or higher, condensation and evaporation work at the same time, so the surface temperature hardly rises above 100 ° C and the surface is in a dry state. The cooking effect / finish is boiled and the surface is dry and the cooking effect / finish is dry. sell. For this reason, surface conditions such as baked colors, internal cooking effects, and finishes are different from the cooking effects and finishes when cooking is done with a grille by providing heating means above and below as in the past. There was a difficult problem.
Moreover, in order to generate superheated steam, the complicated structure and control were required, and there existed a subject which became a high-cost heating cooker.
In addition, since the upper heating means is housed and arranged in the duct, heat transfer to the object to be heated by radiation from the upper heating means is not sufficiently performed, and the surface temperature does not easily rise, resulting in a good cooking effect / finish ( There was a problem that a delicious baked color) could not be obtained.

  In addition, a large number of air outlets are arranged on the upper and side surfaces of the cooking chamber, and the flow rate of the upper air outlet on the back side of the cooking chamber close to the circulation fan increases. The pressure decreases and the flow rate decreases. For this reason, the airflow from the blower outlet on the lower side of the side far from the circulation fan can flow into the suction port without passing through the center in the width direction of the cooking chamber. As a result, sufficient airflow contact cannot be obtained on the bottom surface of the object to be heated, and forced convection heat transfer below the object to be heated is not sufficiently performed. There were issues such as being unable to do so.

  The present invention has been made against the background described above, and a cooking device capable of suppressing the ignition and smoke generation of fats and oils in a cooking chamber of a cooking device, and a cooking device provided with the cooking device. Is to provide. Moreover, the heating cooker which can heat a to-be-heated material with thickness, and a heating cooking apparatus provided with this heating cooker are provided. The present invention also provides a heating cooker with good heating efficiency and a heating cooking apparatus including the heating cooker.

A heating cooker according to the present invention includes a cooking chamber provided inside a casing, an upper heating means provided above the cooking chamber, an outline for placing an object to be heated disposed in the cooking chamber. A cooking table having a horizontal mounting surface, a saucer provided below the cooking table, a suction port and a blower port provided in the cooking chamber, and a suction force generated in the suction port to suck air in the cooking chamber. And a blowing means that blows out air sucked from the suction port from the blower outlet, and there is a space that allows ventilation between the bottom surface of the tray and the placing surface for placing the heated object of the cooking table. The air outlet is provided at a height position between the bottom surface of the saucer and the mounting surface of the cooking table, and a convex portion is provided on the bottom surface of the saucer, and the convex portion is between the both side surfaces of the saucer. to form a wind path of air from the outlet to the ventilation, saucer, outlet side of the wall disposed lower height outlet bottom A wind guide wall provided on the side facing the wall on the blower outlet side and disposed at a position where the upper end is higher than the height of the blower outlet, and the wind guide wall extends substantially vertically, The bottom surface and the wind guide wall are connected by a curved surface .

  According to the present invention, since the air flow blown out from the outlet is attracted to the bottom surface of the tray along the air guide portion by the Coanda effect, the air flow flowing under the object to be heated placed on the cooking table. By this forced heat transfer, the lower part of the object to be heated can be efficiently cooked. In addition, since it is not necessary to provide a lower heating means such as a heater below the object to be heated, the lower height dimension of the cooking table can be reduced, so that a space for placing the object to be heated in the cooking chamber becomes larger. Thus, it is possible to cook a thick object to be heated. Further, since it is not necessary to provide a lower heating means such as a heater below the object to be heated, it is possible to reduce smoke and ignition due to oil and fat content from the object to be heated being heated by the lower heating means. Moreover, since it is not necessary to provide downward heating means, such as a heater, under the object to be heated, there is an effect of improving the maintainability and cleanability in the cooking chamber.

It is a perspective view of the whole induction heating cooking appliance which concerns on Embodiment 1-4. It is a perspective view of the main body 1 of the state which removed the top plate 4 and the inlet / outlet cover 5 of the induction heating cooking appliance which concerns on Embodiment 1-4. It is a front side perspective view which shows the cooking chamber 11 whole which concerns on Embodiment 1. FIG. It is a back side perspective view which shows the cooking chamber 11 whole which concerns on Embodiment 1. FIG. It is a perspective view of the state which removed the cooking chamber upper wall 25 of the cooking chamber 11 which concerns on Embodiment 1. FIG. It is the perspective view which removed the cooking chamber upper wall 25, the cooking chamber door 7, the upper heating means 24, and the cooking table 26 of the cooking chamber 11 which concerns on Embodiment 1. FIG. It is the perspective view of the state which pulled out the cooking chamber door 7 side which concerns on Embodiment 1, and was removed from the cooking chamber 11. FIG. It is a perspective view of the fan casing 20 and the accessory parts according to the first embodiment. 2 is a side cross-sectional view of a main body 1 according to Embodiment 1. FIG. It is the front view which removed the cooking chamber door 7 of the main body 1 which concerns on Embodiment 1. FIG. It is a perspective view of the cooking chamber 11 which concerns on Embodiment 2. FIG. It is a front side perspective view of the state which removed the cooking chamber upper wall 25 of the cooking chamber 11 which concerns on Embodiment 2. FIG. It is a back side perspective view in the state where cooking room upper wall 25 of cooking room 11 concerning Embodiment 2 was removed. It is the perspective view of the state which pulled out the cooking chamber door 7 which concerns on Embodiment 2, and was removed from the cooking chamber 11. FIG. It is a disassembled perspective view of the state which pulled out the cooking chamber door 7 side which concerns on Embodiment 2 from the cooking chamber 11, and was removed. It is front sectional drawing of the cooking chamber 11 which concerns on Embodiment 2. FIG. 5 is a side cross-sectional view of a main body 1 according to Embodiment 2. FIG. It is a figure explaining the turbulent flow promoter 42 which concerns on Embodiment 2. FIG. It is the perspective view which removed the cooking chamber upper wall 25 of the cooking chamber 11 which concerns on Embodiment 3. FIG. It is the perspective view which removed the cooking chamber upper wall 25 of the cooking chamber 11 which concerns on Embodiment 3, the cooking chamber door 7, and the suction inlet 38B. It is a perspective view of the components accompanying the fan casing 20 which concerns on Embodiment 3. FIG. It is the back perspective view which removed the cooking chamber upper wall 25 of the cooking chamber 11, which concerns on Embodiment 3, the cooking chamber exhaust air path 10, and the suction inlet 38B. It is the perspective view of the state which pulled out from the cooking chamber 11 and removed the cooking chamber door 7 side which concerns on Embodiment 3. FIG. It is a disassembled perspective view of the antifouling member 41 hold | maintained at the saucer 27B which concerns on Embodiment 3, and the cooking table 26B. It is side surface sectional drawing of the cooking chamber 11 which concerns on Embodiment 3. FIG. It is front sectional drawing of the cooking chamber 11 which concerns on Embodiment 3. FIG. It is a back side perspective view of the cooking chamber 11 which concerns on Embodiment 4. FIG. It is the front side perspective view which removed the cooking chamber upper wall 25 and the cooking chamber door 7 of the cooking chamber 11 which concern on Embodiment 4. FIG. It is a perspective view of components accompanying the fan casing 20C which concerns on Embodiment 4. FIG. It is the perspective view of the state which removed the cooking chamber door 7 side which concerns on Embodiment 4 from the cooking chamber 11. FIG. It is a disassembled perspective view by the side of the cooking chamber door 7 which concerns on Embodiment 4. FIG. It is side surface sectional drawing of the cooking chamber 11 which concerns on Embodiment 4. FIG. It is front sectional drawing of the cooking chamber 11 which concerns on Embodiment 4. FIG. It is front sectional drawing in the suction inlet 38 part of the cooking chamber 11 which concerns on Embodiment 4. FIG.

Embodiment 1 FIG.
In the present embodiment, a case where the heating cooker of the present invention is applied to an induction cooking device (heating cooking device) used by being incorporated in a kitchen counter or the like will be described as an example. In the following description, there are cases where terms indicating directions (for example, “up”, “down”, “left”, “right”, etc.) are used for ease of understanding. These terms are not intended to limit the invention. Unless otherwise specified, terms indicating these directions indicate directions when viewed from the direction of arrow A in FIG. Further, the “front surface” refers to the surface on the near side when the induction heating cooker is viewed from the direction of arrow A in FIG. 1, and the “rear surface” refers to the surface on the depth side as viewed from the direction of arrow A. .

(Configuration of induction heating cooker)
1 is a perspective view showing the whole induction heating cooker according to Embodiment 1. FIG.
In FIG. 1, a housing upper surface 3 is detachably disposed above the housing 2 of the main body 1 of the induction heating cooker 100. An intake / exhaust port cover 5 is disposed on the back side of the upper surface 3 of the housing, a top plate 4 is disposed in the center, and an operation unit 6 is disposed on the front side. A cooking chamber 11 is provided inside the housing 2.

The top plate 4 has a right placement portion 8a, a left placement portion 8b, and a central placement portion 8c (the placement portions 8) as placement portions for placing an object to be heated (not shown). There are three mounting parts, which may be collectively referred to.
Further, the top plate 4 is provided with a display unit 9 provided with visual display means such as a liquid crystal screen and a lamp. The display unit 9 displays information for notifying the operation state of the main body 1, input / operation contents from the operation unit 6, and the like.

  The intake / exhaust port cover 5 is formed of a punching metal or a lattice-shaped metal member having air permeability. The intake / exhaust port cover 5 is configured so that cooling air for cooling the inside of the housing 2 and the exhaust flow of the cooking chamber 11 can pass smoothly with less ventilation resistance.

  On the front side of the housing 2, a cooking chamber door 7 is provided at the center. The cooking chamber door 7 can be opened and closed by sliding in the front-rear direction so that an object to be heated cooked in the cooking chamber 11 can be taken in and out of the cooking chamber 11. The cooking chamber door 7 is configured to be detachable in order to facilitate maintenance such as cleaning of the cooking chamber 11 and the cooking chamber door 7 itself. In the present embodiment, the operation unit 6 is also provided on both sides of the cooking chamber door 7.

  In addition, arrangement | positioning of the cooking chamber 11 of this Embodiment and the operation part 6 of the front side is an example, and is not restricted to this. For example, in the present embodiment, the cooking chamber 11 is disposed at the center of the left and right sides of the housing 2, but the cooking chamber 11 may be disposed near the left or right side surface of the housing 2. Further, the operation unit 6 may be disposed close to either the left or right side surface, or the operation unit 6 may not be provided on the front side.

FIG. 2 is a perspective view of main body 1 in a state where top plate 4 and intake / exhaust port cover 5 of induction heating cooker 100 according to Embodiment 1 are removed.
A housing exhaust port 13 is provided in the center of the rear surface side of the housing upper surface 3, and a housing air intake port 14 is provided on each of the left and right sides. A cooling air exhaust air passage 15 that guides cooling air for cooling the inside of the housing 2 is provided on the back side inside the housing 2. The housing exhaust port 13 is connected to the cooling air exhaust air passage 15, and the cooling air guided by the cooling air exhaust air passage 15 is discharged from the housing exhaust port 13 to the outside of the main body 1. Further, a cooking chamber exhaust air passage 10 that guides exhaust from the cooking chamber 11 is disposed in the cooling air exhaust air passage 15. Therefore, the exhaust from the cooking chamber 11 is guided to the cooking chamber exhaust air passage 10, merges with the exhaust in the cooling air exhaust air passage 15, and is discharged from the housing exhaust port 13 to the outside of the main body 1. In a normal use state, the housing exhaust port 13 is covered with the intake / exhaust port cover 5 shown in FIG.

  Below the right mounting portion 8a, the left mounting portion 8b, and the central mounting portion 8c of the top plate 4, an induction heating coil unit 18a, an induction heating coil unit 18b, and an induction heating coil unit 18c (these are induction heated), respectively. The coil unit 18 may be collectively referred to). The induction heating coil unit 18 is used for heating an object to be heated placed on the top plate 4. Any or all of the induction heating coil units 18 may be replaced with a radiant heater or the like that is heated by Joule heat.

  Below the induction heating coil unit 18, a cooking chamber storage 19 is defined by sheet metal or the like, and the cooking chamber 11 is disposed inside the cooking chamber storage 19. A gap is provided between the cooking chamber storage unit 19 and the cooking chamber 11, and heat insulation is performed by an air layer. In addition, it is good also as a structure which makes a part of cooling air flow in into the air layer between the cooking chamber storage part 19 and the cooking chamber 11 and raises a heat insulation effect, and it has heat resistance, such as glass wool, instead of this air layer. Insulation may be inserted.

  Substrate case units 17 are respectively arranged on the left and right sides of the cooking chamber storage unit 19. The substrate case unit 17 is mounted with a circuit board (not shown) on which an inverter circuit for supplying high frequency power to the induction heating coil unit 18 is mounted, and a circuit as a control means for controlling the operation of the induction heating cooker 100. Various circuit boards (not shown) are accommodated. The substrate case unit 17 accommodates a cooling fan (not shown) for sucking cooling air into the housing 2 and also has a function as a cooling air duct. The board case unit 17 is provided with a suction port for sucking cooling air. The suction port is disposed below the left and right housing intake ports 14 and connected to the housing intake ports 14.

When the cooling fan in the substrate case unit 17 operates, cooling air is sucked from the housing intake port 14. This cooling air flows into the substrate case unit 17 from the suction port of the substrate case unit 17 connected to the housing intake port 14, is sucked and sent out by the cooling fan, and is mounted on various circuit boards inside the substrate case unit 17. The parts thus formed are cooled and exhausted from the exhaust port of the substrate case unit 17. The cooling air exhausted from the exhaust port of the substrate case unit 17 flows into the chamber 16 disposed below the induction heating coil unit 18.
The chamber 16 is disposed below the induction heating coil unit 18 and has a function of blowing cooling air toward the induction heating coil unit 18. The cooling air that has flowed into the chamber 16 is blown out from the air outlet provided on the upper surface of the chamber 16 and blown to the induction heating coil unit 18 to cool the induction heating coil unit 18.

FIG. 3 is a front side perspective view showing the entire cooking chamber 11 according to the first embodiment. FIG. 4 is a rear perspective view showing the entire cooking chamber 11 according to the first embodiment.
A fan casing 20 is provided on the back of the cooking chamber 11, an electric motor 21 is disposed on the back thereof, and a turbo fan 22 (see FIG. 8) provided in the fan casing 20 is attached to the rotating shaft of the electric motor 21. ing. During heating in the cooking chamber 11, the presence or absence of rotation of the electric motor 21, the number of rotations, and the like are controlled by the control means in the substrate case unit 17, and the turbo fan 22 (see FIG. 8) is operated by the rotation of the electric motor 21. As the electric motor 21, for example, a DC motor or an induction motor is used. The electric motor 21 is cooled as necessary in accordance with the specifications of the operating environment and the life of the rotary shaft bearing. More specifically, for example, a configuration in which a cooling fan is provided on the rotating shaft of the electric motor 21 is employed.

  A cooking chamber exhaust air passage 10 is provided on the back surface of the fan casing 20. The cooking chamber exhaust air passage 10 and the inside of the fan casing 20 communicate with each other.

Circulating airflow heating means 23 is provided so as to penetrate the left and right side surfaces of the fan casing 20, and a terminal portion for operating the circulating airflow heating means 23 is exposed outside the fan casing 20. This terminal portion is wired to a circuit board in the substrate case unit 17 (not shown), and the presence / absence of heating by the circulating airflow heating means 23 and the heating amount are controlled by the control means.
A terminal portion of the upper heating means 24 is disposed on the back surface of the cooking chamber 11. This terminal portion is wired to a circuit board in the substrate case unit 17 (not shown), and the presence / absence and amount of heating by the upper heating means 24 are controlled by the control means.
The details of the circulating airflow heating means 23 and the upper heating means 24 will be described later.

  The cooking chamber 11 is provided with a lock mechanism (not shown) that restricts the opening and closing of the cooking chamber door 7. This locking mechanism is used, for example, during a cooking operation in the cooking chamber 11 or in a predetermined condition after the end of cooking / stopping (temperature in the cooking chamber, rotating operation due to the inertia of the turbo fan 22 (see FIG. 8)). The cooking chamber door 7 cannot be opened due to the lock.

Further, a means for detecting opening and closing of the cooking chamber door 7 by sliding is provided (not shown), and when the cooking chamber door 7 is open, the cooking chamber 11 can be opened even if a heating instruction is input to the operation unit 6. Heating at is not performed. In addition, when the cooking chamber door 7 is open, information indicating that the cooking chamber door 7 is open and cooking is not performed, and information for invoking the cooking chamber door 7 to be closed are displayed on the display unit 9. You may notify.
As a means for detecting opening and closing of the cooking chamber door 7, for example, when the cooking chamber door 7 with a built-in magnet slides and closes, the magnetic detection means provided on the main body side detects the magnetism of the cooking chamber door 7. And what detects that the cooking chamber door 7 is closed is employable. However, this detection means is only an example, and non-contact detection means for detecting reflection or blocking of light, ultrasonic waves, radio waves, etc., and contact / mechanical detection means such as a mechanical switch may be used. If a means capable of detecting the opening / closing of the door 7 is provided, the effect of the present invention can be obtained regardless of the specific configuration of the detecting means.

  Further, for example, when the cooking chamber door 7 is accidentally opened during the cooking operation due to damage to the lock mechanism, the heating means and the blower during the cooking operation are stopped, and the front opening of the cooking chamber 11 is opened. Suppresses radiation and hot air leakage.

FIG. 5 is a perspective view of the cooking chamber 11 according to Embodiment 1 with the cooking chamber upper wall 25 removed.
An upper heating means 24 is disposed above the cooking chamber 11. In the present embodiment, a sheathed heater that is a resistance heating element is used as the upper heating means 24. The specific structure of the upper heating means 24 is not limited to this, and a far-infrared heater may be used, the top plate may be heated with a flat heater, or the top plate or a resistance heating element with an induction heating coil. May be used as long as it can be heated by radiation or heat transfer from above the object to be heated in the cooking chamber 11. In the present embodiment, the upper heating means 24 is bent in the depth direction and the width direction so that a wide area above the cooking chamber 11 can be heated.

A cooking table 26 is disposed below the upper heating means 24, and a tray 27 is disposed below the cooking table 26.
A cooking chamber suction port 12 is provided on the back of the cooking chamber 11. The cooking chamber suction port 12 communicates with the fan casing 20.

  FIG. 6 is a perspective view of the cooking chamber 11 according to Embodiment 1 with the cooking chamber upper wall 25, the cooking chamber door 7, the upper heating means 24, and the cooking table 26 removed. 7 shows a perspective view of a state in which the cooking chamber door 7 side according to Embodiment 1 is pulled out from the cooking chamber 11 and removed.

  A plurality of slit-shaped nozzles 28 are provided below the cooking chamber suction port 12 on the back surface of the cooking chamber 11. The nozzle 28 is provided in accordance with the width of the cooking table 26 (see FIG. 5). From the nozzle 28, the airflow produced by the action | operation of the turbo fan 22 (refer FIG. 8, FIG. 9) blows off.

  An air guide portion 29 is disposed at a height slightly lower than the lower end of the nozzle 28. In the present embodiment, the air guide portion 29 is formed integrally with the tray 27 and is configured by a surface that smoothly connects the vicinity of the lower end of the nozzle 28 and the bottom surface of the tray 27. In the present embodiment, the air guide portion 29 has an inclined surface that descends toward the bottom surface of the tray 27 so as to draw an arc from the vicinity of the lower end of the nozzle 28, and is connected to the bottom surface of the tray 27 in a smooth aspect. Has been. The air guide portion 29 guides the airflow blown from the nozzle 28 to the bottom surface of the tray 27 with less peeling due to the Coanda effect. The shape of the inclined curved surface constituting the inclined surface shown in the drawing of the present embodiment and the connecting curved surface connected to the bottom surface of the tray 27 is an example, and the curvature and the ratio of the curved curved surface to the connecting curved surface are not limited thereto. In addition, the curvature of the inclined curved surface and the connecting curved surface does not need to be constant, and the curvature may be variable. If the air current blown from the nozzle 28 is difficult to peel off, it functions as the air guide portion 29 and performs the same operation.・ Effects can be obtained. The cooking chamber 11 of the first embodiment is a mechanism that circulates the airflow blown from the nozzle 28 to form a circulating airflow, and heats the region centered below the object to be heated by the circulating airflow.

  The mounting surface 70 of the object to be heated of the cooking table 26 is formed of, for example, a so-called straight type grille made up of a plurality of rod-shaped stainless steels extending in the front-rear direction. The material can be any material other than stainless steel as long as it is a heat-resistant material and suitable for cooking, and an inorganic ceramic coating agent with non-adhesive and antifouling properties is applied to the surface of the material. Also good. As described above, the mounting surface 70 of the cooking table 26 is composed of a plurality of rod-like members extending in the front-rear direction (that is, the flow direction of the circulating airflow), and a member that intersects the flow direction of the circulating airflow is not provided as much as possible. By doing so, the flow of the circulating airflow is not inhibited, and the stagnation of the circulating airflow due to the crossing of the structural members with the circulating airflow is suppressed. Thereby, since the contact with the to-be-heated material of a circulating airflow is not inhibited very much, the heating nonuniformity of a to-be-heated material can be suppressed.

  In addition, the cooking table 26 has legs 53 for placing the cooking table 26 on the tray 27. The leg portion 53 has a predetermined height so that a space having a predetermined height is formed between the placement surface 70 and the bottom surface of the tray 27. As shown in FIG. 7, the leg portion 53 of the cooking table 26 for placing the cooking table 26 on the tray 27 is not provided on the nozzle 28 side. In other words, no other member is provided in a direction intersecting with the circulating airflow having a high flow velocity blown out from the nozzle 28. By doing in this way, peeling and disorder of the circulating air current which blows off from the nozzle 28 are suppressed.

  The saucer 27 is placed below the cooking table 26 and receives moisture, oil, and the like dripped from the object to be heated. A wall having a predetermined height is provided on the outer peripheral portion of the saucer 27, so that the dripping water can be stored from foods or the like that are to be heated placed on the cooking table 26.

A pair of slide rails 30 are disposed on the left and right side surfaces of the cooking chamber 11 and the cooking chamber door 7. The slide rail 30 realizes opening and closing of the cooking chamber door 7 by sliding. In addition, a holding portion 31 is provided between the left and right slide rails 30 to detachably hold the tray 27. When the cooking chamber door 7 is pulled out to the front side, the receiving tray 27 supported by the holding portion 31, the cooking table 26 held by the receiving tray 27, and the object to be heated placed on the cooking table 26 are integrally formed. They are pulled out by sliding and can be exposed to the outside of the cooking chamber 11 in general. By doing in this way, mounting and carrying out of a to-be-heated object, the cooking table 26, and the saucer 27 are made easy, and cooking workability, maintenance property, and cleaning property are improved. The slide rail 30 on the cooking chamber door 7 side is detachably engaged with the slide rail 30 on the cooking chamber 11 side, and the cooking chamber door 7 is detached from the cooking chamber 11 so that maintenance such as cleaning can be easily performed. Yes.
In addition, the back side of the holding portion 31 between the slide rails 30 is formed lower than the lower surface of the air guide portion 29 and does not hinder the flow of the circulating airflow from the nozzle 28.

  A temperature sensor 32 that detects the temperature in the cooking chamber 11 is provided on the inner surface of the cooking chamber 11. As the temperature sensor 32, for example, a platinum resistance thermometer, thermistor, thermocouple or the like is used. If necessary, a plurality of temperature sensors 32 may be provided, and the arrangement of the temperature sensors 32 is not limited to the wall surface, and may be provided on the top surface or the bottom surface, the tray 27 or the cooking table 26 as necessary. Moreover, you may provide the to-be-contacted type temperature sensor 32 which detects the amount of infrared rays radiated | emitted from a to-be-heated object, and detects the surface temperature of a to-be-heated object. Outputs of these temperature sensors 32 are transmitted to control means mounted on the electronic circuit board in the board case unit 17. In accordance with the cooking software, the control means sets the cooking menu and heating conditions shown on the display unit 9 by the operation unit 6, and the upper heating means 24, based on the cooking chamber 11 and the temperature of the object to be heated. The output and operation of the circulating airflow heating means 23, the electric motor 21 and the like are controlled.

As shown in FIG. 7, an airtight member 33 is disposed on the outer peripheral portion of the cooking chamber door 7 on the cooking chamber 11 side. When the cooking chamber door 7 is closed, the outer periphery of the front opening of the cooking chamber 11 is airtight. The member 33 contacts and suppresses the air leak in the cooking chamber 11 from the clearance between the cooking chamber door 7 and the cooking chamber 11.
Further, the cooking chamber door 7 may be provided with a transmission portion such as a glass window so that the inside of the cooking chamber 11 can be seen.

FIG. 8 is a perspective view of the fan casing 20 and the accessory parts according to the first embodiment.
A turbo fan 22 attached to the rotating shaft of the electric motor 21 is housed in the fan casing 20 so as to be freely rotatable. When the electric motor 21 operates, the turbo fan 22 rotates and is sucked from the cooking chamber suction port 12 by the action of the centrifugal fan, and the sucked airflow is sent to the outer peripheral side of the turbo fan 22.

  In the fan casing 20, an exhaust air passage connection port 43 communicating with the cooking chamber exhaust air passage 10 is provided below the turbo fan 22. A catalyst body 34 is disposed in the exhaust air passage connection port 43. The catalyst body 34 is attached with an oxidation catalyst containing any of Pd, Pt, and Mn, and when the exhaust gas passes through, the oxidation catalyst adsorbs substances such as oily smoke and odor components to cause oxidative decomposition, thereby exhausting the exhaust gas. It cleans up some of the pollutants contained in the food, reducing the user's discomfort in exhausting the cooking space.

  A part of the air flow sent out by the turbo fan 22 flows into the cooking chamber exhaust air passage 10 from the exhaust air passage connection port 43 and is exhausted from the upper end opening of the back side vertical portion 10 a of the cooking chamber exhaust air passage 10. . The air volume to be exhausted is adjusted so as to be an appropriate exhaust air volume by the cross-sectional area of the cooking chamber exhaust air path 10 including the pressure loss of the catalyst body 34. A good cooking effect and finish in the cooking chamber 11 can be obtained by exhausting air with an appropriate amount of air, and heating efficiency is not unnecessarily lowered.

  Below the fan casing 20, rod-shaped circulating airflow heating means 23 is disposed over both side surfaces of the fan casing 20. The circulating airflow heating means 23 is arranged approximately in the middle of the depth direction of the fan casing 20 so as not to contact the wall on the back side of the fan casing 20. The circulating airflow heating means 23 is arranged in a direction substantially parallel to the opening surface of the nozzle 28. In a state where the fan casing 20 is attached to the back side of the cooking chamber 11, a space is formed between the circulating airflow heating means 23 and the backside of the cooking chamber 11, as shown in FIG. A space is also formed between the heating means 23 and the back surface of the fan casing 20. The airflow from the turbo fan 22 to the nozzle 28 is heated by the circulating airflow heating means 23 when passing through any one of these spaces in the fan casing 20 and blown out from the nozzle 28 immediately after being heated. The circulating airflow heating means 23 is preferably provided at a position closer to the nozzle 28. By doing in this way, the path | route of the airflow after it is heated by the circulating airflow heating means 23 until it blows off from the nozzle 28 can be shortened, while being able to reduce a heat loss and circulation of higher temperature The heated object is heated in a short time by blowing out the air current, and the cooking time is shortened.

  As the circulating airflow heating means 23, for example, a glass tube heater, a sheathed heater, a ceramic heater or the like is used. Cooking time can be shortened by using a glass tube heater such as a quartz tube heater, a halogen lamp heater, a carbon heater or the like having a high temperature rising rate. A catalyst body 34 is disposed on the back side of the circulating airflow heating means 23. The catalyst body 34 is heated by radiation from the circulating airflow heating means 23 in addition to the heat of exhaust gas passing therethrough, so that the reaction speed is increased. The catalyst becomes faster and the catalytic activity is increased, and the purification of exhaust gas is further enhanced.

FIG. 9 is a side sectional view of the main body 1 according to the first embodiment. 9A is a side sectional view of the entire main body 1, and FIG. 9B is an enlarged view of the vicinity of the nozzle 28 in FIG. 9A.
The upper surface, the bottom surface, and the side surface of the cooking chamber 11 have a double wall structure, and a heat insulating space 35a is provided between the double walls. The heat insulating space 35a suppresses heat leakage from the cooking chamber 11 to increase the heating efficiency in the cooking chamber 11, and suppresses temperature rise of components arranged around due to heat leakage to increase cooling efficiency. In the present embodiment, the upper surface, the bottom surface and the side surface of the cooking chamber 11 have a double wall structure. However, depending on the required heat insulation performance, it is not necessary to provide all surfaces, The insulation performance may be further enhanced by, for example, a double wall structure.
Moreover, between the cooking chamber 11 and the cooking chamber storage part 19 of the housing | casing 2, the heat insulation space 35b is provided, while suppressing the heat leak from the cooking chamber 11 and improving the heating efficiency in the cooking chamber 11, Cooling efficiency is improved by suppressing the temperature rise of the parts arranged around due to heat leakage.
In the present embodiment, an example in which heat insulation is performed by an air layer in the heat insulating spaces 35a and 35b is shown, but a heat insulating material such as glass wool or a vacuum heat insulating material is inserted into the heat insulating spaces 35a and 35b as necessary. In this way, heat insulation performance can be improved, and heating efficiency and cooling efficiency can be increased.

  The nozzle 28 is provided at a height position between the mounting surface 70 of the cooking table 26 and the bottom surface of the tray 27. The air guide portion 29 is substantially the same height as the lower end portion of the nozzle 28 in the vicinity of the lower end of the nozzle 28 (left side in FIG. 9). The air guide portion 29 is formed on the nozzle 28 side substantially in parallel with the air flow direction of the air flow from the nozzle 28, and is further connected with an inclined surface that descends so as to draw an arc, and is smoothly connected to the bottom surface of the tray 27 with a curved surface. ing.

At the upper end of the nozzle 28, a rectifying unit 36 extending toward the inside of the fan casing 20 is provided. The rectifying unit 36 extends so as to be substantially parallel to the bottom surface of the fan casing 20 connected to the lower end of the nozzle 28. That is, it can be said that an air passage is formed in the fan casing 20 between the rectifying unit 36 and the bottom surface of the fan casing 20. The air flow formed by the rectifying unit 36 rectifies the circulating air current blown from the nozzle 28 so as to be blown out substantially parallel to the surface of the air guide unit 29 on the contact side of the nozzle 28. By rectifying the circulating airflow in this way, adhesion of the circulating airflow to the wind guide portion 29 due to the Coanda effect is enhanced, and the airflow to the bottom surface of the receiving tray 27 of the circulating airflow is improved.
Note that the length of the rectifying unit 36 in the front-rear direction shown in the drawing of the present embodiment is an example, and as the length of the rectifying unit 36 in the front-rear direction increases, rectification tends to be better, but the pressure loss increases. The length may be set so as to obtain a degree of rectification necessary for good adhesion. Further, the rectification degree may be further increased by arranging a rectification plate parallel to the rectification unit 36 in the air passage formed by the rectification unit 36 and the bottom surface of the fan casing 20.

In contrast to the air guide portion 29 provided on the back side of the tray 27, a wind guide wall 37 extending substantially perpendicularly is provided on the front side end portion (side facing the wind guide portion 29) of the tray 27.
The circulating airflow that is blown out from the nozzle 28 and adheres to the air guide portion 29 due to the Coanda effect and flows into the bottom surface of the tray 27 flows on the bottom surface of the tray 27 while diffusing along the bottom surface, and is placed on the cooking table 26. The lower part of the object to be heated is heated. The circulating airflow that has reached the front end of the bottom surface of the tray 27 is bent by the air guide wall 37 to become a generally upward flow, reducing contact of the circulating airflow with the cooking chamber door 7. As a result, the temperature rise of the cooking chamber door 7 is suppressed, the risk of burns due to contact when the user opens and closes the cooking chamber door 7 is reduced, safety is increased, and the heat from the cooking chamber door 7 is increased. Reduces leakage and increases heating efficiency. Moreover, by reducing the contact of the circulating airflow with the cooking chamber door 7, the leakage of air in the cooking chamber 11 from the contact surface of the airtight member 33 is suppressed and the heating efficiency is improved. The user's discomfort caused by leaking directly into the room from the cooking room door 7 is reduced.

FIG. 10 shows a front view of the main body 1 with the cooking chamber door 7 according to the first embodiment removed.
The dimension in the height direction of each nozzle 28 is a substantially constant width. The plurality of nozzles 28 are provided substantially horizontally over the width of the cooking table 26 in the horizontal direction, and the circulating airflow from the nozzles 28 flows over almost the entire area below the mounting surface 70 of the cooking table 26. The lower part of the object to be heated is cooked by a circulating airflow regardless of the position of the object to be heated on the cooking table 26.

In the present embodiment, the nozzles 28 are arranged approximately horizontally. However, this is not limited as long as the circulating airflow contacts the mounting surface 70 of the cooking table 26 uniformly. More specifically, the nozzle 28 is disposed between the mounting surface 70 of the cooking table 26 and the bottom surface of the tray 27, and the bottom surface of the fan casing 20 and the nozzle 28 side of the air guide portion 29 are flush with the lower end of the nozzle 28. As long as the arrangement is the same, the arrangement of the nozzles 28 may not be substantially horizontal. For example, the nozzle 28 may be arranged such that the central portion is low and both side surfaces are high.
Further, in the present embodiment, the plurality of nozzles 28 are provided in the horizontal direction with almost no gap, but the circulating airflow contacts the entire width direction of the mounting surface 70 of the cooking table 26 by diffusion of the circulating airflow. If it exists, the space | interval may be provided between the nozzles 28, and the width | variety of the both ends of the nozzle 28 may be narrower than the width direction dimension of the cooking stand 26, and the heating cooking under the to-be-heated material by circulating airflow has the same effect Is obtained.

(Operation of induction heating cooker)
In the induction heating cooker 100 configured as described above, when a heating instruction operation is performed on the operation unit 6, various circuits mounted on the electronic circuit board in the substrate case unit 17 are used to lower the top plate 4. The induction heating coil unit 18, the upper heating means 24 of the cooking chamber 11, the circulating airflow heating means 23, the electric motor 21 and the like are driven to perform cooking.

Next, heating cooking in the cooking chamber 11 will be described.
When the user selects / inputs the cooking mode, cooking menu, and heating condition displayed on the display unit 9 through the operation unit 6, a control sequence corresponding to the set cooking mode is called from the storage means, Control of the heating means and the like is performed.

  The control and operation of cooking will be described by taking as an example a cooking mode in which ingredients such as fish and meat are placed directly on the cooking table 26 and heated.

(1) Initial stage of cooking In the initial stage of cooking, the upper heating means 24 raises the upper side of the object to be heated placed on the cooking table 26 to about 70 ° C. in a short time due to the radiation from the upper heating means 24. Therefore, the output is controlled to be high so that the protein in the surface layer is solidified to suppress the volatilization of moisture and the like inside and maintain the internal juiciness.

  Along with the heating by the upper heating means 24, the electric motor 21 is driven, and the turbo fan 22 rotates. Thereby, the air in the cooking chamber 11 heated by the heat transfer from the upper heating means 24 is sucked into the fan casing 20 from the cooking chamber suction port 12 and sent out from the turbo fan 22 into the fan casing 20. The delivered air is blown out from the nozzle 28 into the cooking chamber 11 as a circulating airflow. The circulating airflow passes through the front side or the rear side of the circulating airflow heating means 23 in the fan casing 20 immediately before being blown out, so that the temperature becomes higher and is rectified by the rectifying unit 36 and blown out from the nozzle 28.

  The hot circulating air flow blown out from the nozzle 28 flows while adhering to the air guide portion 29 due to the Coanda effect, is guided to the bottom surface of the tray 27 and flows while diffusing to the front side along the bottom surface. 26 to contact the lower side of the object to be heated. When this high-temperature circulating airflow contacts the lower side of the object to be heated, forced convection heat transfer is performed on the lower side of the object to be heated, and cooking is performed. The circulating airflow flowing under the cooking table 26 is guided by the air guide wall 37 of the tray 27 and flows upward, and is sucked again from the cooking chamber suction port 12. In this way, the circulating air current circulates in the cooking chamber 11. A part of the circulating airflow is exhausted from the cooking chamber exhaust air passage 10 as described with reference to FIG.

  As for the heating of the underside of the object to be heated, in the initial stage of cooking, the temperature of the surface layer portion is rapidly increased to solidify the protein in the same manner as the upper side of the object to be heated. Therefore, the output of the circulating airflow heating means 23 is controlled to be a maximum output in the cooking process. Further, the rotational speed of the electric motor 21 is also controlled to be the highest in the cooking process, and the air volume of the turbo fan 22 is increased, thereby increasing the flow velocity of the blown air from the nozzle 28, and the circulating airflow is brought into contact with the lower side of the object to be heated. Speed increases, temperature and speed increase. In this way, control is performed to accelerate heat transfer to the underside of the object to be heated and to perform rapid heating.

  Changes in temperature in the cooking chamber 11 at the initial stage of cooking are detected by the temperature sensor 32 and output to the control means. The control means calculates the amount of the object to be heated and the initial temperature based on the temperature change and the like, sets a sequence such as cooking time based on the program stored in the storage means, and thereafter controls according to the sequence. .

(2) Middle stage of cooking After heating of the front side portion in the initial stage of cooking, the control means controls the temperature of both the upper heating means 24 and the circulating airflow heating means 23 so that the cooking chamber is maintained at a predetermined temperature. Control is performed so that the output is relatively lower than the output of the sensor 32, and on / off control is also performed. By such control, cooking by the residual heat in the cooking chamber 11 is also performed. Further, the control means controls the electric motor 21 to a relatively low rotational speed in order to suppress volatilization of moisture and the like in the foodstuff, and stops the rotation of the electric motor 21 as necessary.

  Further, the control means controls the number of revolutions of the electric motor 21 to change the air volume of the turbo fan 22, thereby changing the flow velocity of the circulating air current from the nozzle 28, thereby causing the flow of the circulating air current in the cooking chamber 11. Also controls to change the. In this way, by suppressing, changing, and moving the stagnation of the airflow, the temperature unevenness in the cooking chamber is reduced, and the contact of the circulating airflow with the heated object is changed to reduce the baking unevenness, thereby improving the cooking effect and finish. Uniformity can be improved.

(3) At the end of cooking At the end of cooking, the control means gives a good (savory) baked color to the surface of the ingredients and volatilizes the surface moisture to make it look good and tastes good. The output of the upper heating means 24 is controlled to be higher than that in the middle of cooking so as to obtain a cooking effect / finish.

  When the predetermined sequence is completed, the control unit stops the upper heating unit 24, the circulating airflow heating unit 23, and the electric motor 21. When the heating operation is stopped and the unlocking condition of the cooking chamber door 7 is satisfied, the control means notifies the completion of cooking on the display unit 9 and also notifies the cooking chamber door 7 with a buzzer and a voice, thereby unlocking the cooking chamber door 7. Thus, the cooking chamber door 7 can be opened and closed.

  As described above, according to the present embodiment, the cooking chamber 11 provided in the housing 2, the upper heating means 24 provided above the cooking chamber 11, and the cooking chamber 11 are disposed. The cooking table 26 for placing the object to be heated, the receiving tray 27 provided below the cooking table 26, the cooking chamber inlet 12 and the nozzle 28 provided in the cooking chamber 11, and the cooking chamber inlet 12 An electric motor 21 and a turbo fan 22 are provided as blowing means for generating suction force to suck air in the cooking chamber 11 and blow out the air sucked from the cooking chamber suction port 12 from the nozzle 28. A space allowing ventilation is provided between the bottom surface of the tray 27 and the mounting surface 70 on which the heated object of the cooking table 26 is mounted, and the nozzle 28 is connected to the bottom surface of the tray 27 and the cooking table 26. It is provided at a height position between the mounting surface 70 and the mounting surface 70. Further, an air guide portion 29 having an inclined surface descending from the vicinity of the lower end of the nozzle 28 toward the bottom surface side of the tray 27 and guiding the air blown from the nozzle 28 to the bottom surface of the tray 27 is provided.

  A space is provided between the bottom surface of the tray 27 and the mounting surface 70 of the cooking table 26, and a nozzle 28 is provided at a height between the bottom surface of the tray 27 and the mounting surface 70 of the cooking table 26. An air guide portion 29 having an inclined surface descending from the vicinity of the lower end of 28 toward the bottom surface side of the tray 27 and guiding the air blown from the nozzle 28 to the bottom surface of the tray 27 is provided. Since the airflow (circulation airflow) blown out from the nozzle 28 is high-temperature air heated by the upper heating means 24 in the cooking chamber 11, it is placed on the cooking table 26 by forced convection heat transfer of this circulation airflow. The heated object to be heated can be heated. The air flow blown from the nozzle 28 adheres to the air guide portion 29 due to the Coanda effect and is attracted to the bottom surface of the saucer 27 and flows toward the front of the cooking chamber 11, so that only the vicinity of the nozzle 28 of the saucer 27 is present. A hot circulating airflow also flows to a distant place (for example, the vicinity of the cooking chamber door 7), and can be heated over a wide range. Therefore, cooking can be performed for a short time to increase heating efficiency, and energy efficiency is also increased. Therefore, it is possible to obtain a cooking device having high cooking ability, excellent safety, long life and energy saving and low environmental load.

In addition, since it is not necessary to provide a lower heating means below the object to be heated, the object to be heated is placed in the cooking chamber as compared with a heating cooker provided with a lower heating means below the object to be heated. Space can be expanded. For this reason, it becomes possible to heat an object to be heated with a greater thickness, and it is possible to obtain a heating cooker having a high cooking ability capable of cooking an object to be heated of a wide size.
Moreover, since it is not necessary to provide a downward heating means under the to-be-heated object, neither the smoke nor ignition by the oil and fat dripped from the to-be-heated object is heated by the downward heating means. For this reason, smoke and ignition in the cooking chamber 11 are suppressed.

  Further, since the air guide portion 29 has an inclined surface that descends from the vicinity of the lower end of the nozzle 28 toward the bottom surface side of the tray 27, the circulation airflow from the nozzle 28 is prevented from being separated from the air guide portion 29. In addition, adhesion of the circulating airflow to the air guide portion 29 can be enhanced. Therefore, a stable attached airflow can be formed from the end of the bottom of the tray 27 on the side of the air guide portion 29 toward the front, and the airflow can reach the cooking chamber door 7 side of the mounting portion of the cooking table 26. Since a circulating airflow flows in a wide range below the cooking table 26, it is possible to obtain a heating cooker with little cooking unevenness and a relatively uniform cooking effect and finish regardless of the place where the heated object is placed on the cooking table 26. it can.

  Moreover, in this Embodiment, the wind guide part 29 and the saucer 27 are integrated. For this reason, since the number of parts can be reduced, parts cost and assembly cost can be reduced, and a heating cooker can be manufactured at low cost. Further, by integrating the air guide portion 29 and the receiving tray 27, the user can perform maintenance and cleaning of the air guide portion 29 at the same time as performing maintenance and cleaning of the receiving tray 27. A cooking device excellent in maintainability can be obtained.

  Further, an air guide wall 37, which is a wall surface standing substantially vertically, is provided on the side of the tray 27 facing the air guide portion 29. For this reason, the circulating airflow flowing on the bottom surface of the tray 27 is guided to the air guide wall 37 and flows upward of the cooking chamber 11. Therefore, contact of the circulating airflow with the cooking chamber door 7 is reduced, heat loss is reduced, and heating efficiency is improved. Moreover, since the contact of the circulating airflow with the cooking chamber door 7 is reduced, the high temperature of the cooking chamber door 7 can be suppressed and safety can be improved. Moreover, since the contact of the circulating airflow to the cooking chamber door 7 is reduced, the leakage of smoke from the airtight member 33 is suppressed, and the user's discomfort is reduced. Thus, it can be set as the heating cooker which is excellent in heating efficiency, has high safety, and can perform comfortable cooking.

  In addition, the nozzle 28 serving as the air outlet is composed of a plurality of slits, and the lower end of the slit-like nozzle 28 is provided at substantially the same height as the bottom surface of the fan casing 20 that forms the air passage connected to the nozzle 28. It has been. For this reason, the flow of the circulating airflow from the bottom surface of the fan casing 20 to the lower end of the nozzle 28 is not hindered and is rectified into a smooth flow, so that the circulating airflow is guided in a state where the vertical flow direction from the nozzle 28 is stable. It can flow into the wind part 29. Therefore, the circulating airflow can be more stably attached to the air guide portion 29, and the cooking device can be obtained in which the heating under the article to be heated is appropriately performed to obtain a good cooking effect and finish.

  Further, in the present embodiment, the bottom surface of the fan casing 20 that forms the air flow path of the circulating airflow reaching the nozzle 28 is formed horizontally, and the end portion of the air guide portion 29 on the nozzle 28 side is also formed horizontally. ing. As described above, since the bottom surface of the air passage that guides the air sucked from the cooking chamber suction port 12 to the nozzle 28 and a part of the air guide portion 29 connected to the air passage are set to the same inclination angle, The vertical flow direction of the airflow and the vertical flow direction of the airflow at the nozzle side end of the air guide portion 29 are the same. For this reason, the turbulence of the airflow accompanying the change in the flow direction from the fan casing 20 to the air guide portion 29 does not occur, and the attachment of the air flow to the air guide portion 29 is further stabilized. It can be made into a heating cooker that can be performed in a good cooking effect / finish.

Further, a circulating airflow heating means 23 is provided between the turbo fan 22 as a blowing means and the nozzle 28. Thus, by providing the circulating airflow heating means 23 on the air passage that guides the air sucked from the cooking chamber suction port 12 to the nozzle 28, the circulating airflow blown from the nozzle 28 is heated to a higher temperature, and in a short time. Cooking can be done.
Further, in the present embodiment, the rod-shaped circulating airflow heating means 23 is arranged substantially parallel to the opening surface of the nozzle 28. For this reason, the circulating airflow heating means 23 becomes a pressure loss body, and when passing through the circulating airflow heating means 23, the airflow from the turbo fan 22 is dispersed in a substantially horizontal direction, and the flow rate and flow velocity of the airflow blown out from the plurality of nozzles 28 are reduced. Uniformity can be promoted. Therefore, it is possible to provide a heating cooker in which the contact of the airflow in the left-right direction below the object to be heated placed on the cooking table 26 is made uniform, and a good cooking effect and finish with little cooking unevenness can be obtained.

  Further, by providing the circulating airflow heating means 23 at a position closer to the nozzle 28, the path of the airflow from being heated by the circulating airflow heating means 23 to being blown out from the nozzle 28 can be shortened. Loss can be reduced, and the heated object can be heated in a short time by shortening the cooking time by blowing out a higher temperature circulating airflow.

  Further, a catalyst body 34 is disposed in the cooking chamber exhaust air passage 10 at a location where the radiation from the circulating airflow heating means 23 reaches on the back side of the circulating airflow heating means 23. For this reason, the catalyst body 34 is further heated by radiant heating of the circulating airflow heating means 23 in addition to the heating of the exhaust gas, and the catalytic activity increases, and the oxidative decomposition of pollutants such as oily smoke and odor components contained in the exhaust gas accompanying the cooking by heating. Promoted and improved purification performance. Therefore, the cleanliness of the exhaust discharged from the cooking chamber exhaust air passage 10 to the outside is increased, and a cooking device that can provide a comfortable cooking space and environment can be obtained.

  Moreover, the opening / closing detection means of the operation part 6, the display part 9, and the cooking chamber door 7 was provided, and it alert | reported by the display part 9 according to the opening / closing state of the cooking chamber door 7. FIG. More specifically, when an operation instruction is issued from the operation unit 6, if the cooking chamber door 7 is opened by detecting the opening / closing of the cooking chamber door 7, the display unit closes the cooking chamber door 7 without performing heating cooking. 9 and when the opening operation of the cooking chamber door 7 is detected during cooking, the upper heating means 24, the circulating airflow heating means 23 and the electric motor 21 as the blowing means are stopped. The display unit 9 is informed that the cooking is stopped because the cooking chamber door 7 is opened. By doing in this way, since the risk that a user burns etc. can be reduced, a highly safe cooking device can be obtained.

  Moreover, according to the induction heating cooker 100 of the present embodiment, cooking using a cooking container such as a pan or a frying pan can be performed on the top plate 4, and the cooking chamber 11 can be used for grilling, roaster, oven, steam cooking, and the like. Since it can do, various cooking can be performed simultaneously with one heating cooking apparatus, and a multi-functional heating cooking apparatus can be obtained in a small space.

Embodiment 2. FIG.
In the second embodiment, an example in which a part of the configuration in the first embodiment is changed will be described. The present embodiment will be described with reference to FIGS. 11 to 18 with a focus on differences from the first embodiment. Further, in the second embodiment, the same members as those in the first embodiment are denoted by the same reference numerals, and the reference numeral “A” is used for the modified members described in the first embodiment. Will be described. In addition, the induction heating cooking appliance of this Embodiment 2 is the same as that of Embodiment 1 about the structure shown in FIG. 1, FIG.

FIG. 11 is a perspective view of cooking chamber 11 according to the second embodiment. Moreover, FIG. 12 is a front side perspective view of the cooking chamber 11 according to Embodiment 2 with the cooking chamber upper wall 25 and accompanying components removed. 12A is a perspective view of the entire cooking chamber 11, and FIG. 12B is an enlarged view of the vicinity of the suction port body 38 of FIG. 12A.
In the first embodiment, the cooking chamber exhaust air passage 10 is connected to the lower side of the fan casing 20 (below the electric motor 21). However, in the second embodiment, the cooking chamber exhaust air passage 10A is It is connected above the fan casing 20A.

The upper heating means 24A is different in shape from the upper heating means 24 (see FIG. 5) in the first embodiment.
Specifically, the terminal portion of the upper heating means 24 </ b> A is close to the right side surface of the cooking chamber 11 and is disposed so as to penetrate the cooking chamber 11.

The upper heating means 24A has a shape that bends in the width direction and the depth direction of the cooking chamber 11. Of this shape, a portion close to the back side of the cooking chamber 11 (referred to as a heating means back side 39). ). For the sake of explanation, in FIG. 12 (b), the heating means back side 39 is shaded. The heating means rear side 39 extends from the left terminal side of the upper heating means 24A and is arranged substantially parallel and substantially horizontal to the rear face of the cooking chamber 11, and is not divided in the width direction and is close to the width direction of the upper heating means 24A. It is wide.
In the present embodiment, both terminals of the upper heating means 24A are brought closer to the right end, but both terminals of the upper heating means 24A may be brought closer to the left end so as to be reversed. The shape of the side 39 may be a shape that is integrated with the width close to the upper heating means 24A without being divided in the width direction.

  A suction port body 38 is provided on the back side of the cooking chamber 11. The suction port body 38 is formed so as to cover the front of the cooking chamber suction port 12 provided on the back surface of the cooking chamber 11 with a predetermined space, and opens the air suction port 50 toward the front surface of the cooking chamber 11. doing. The left and right width of the suction port 50 of the suction port body 38 is smaller than the left and right width of the cooking chamber 11, and the flow path of the air flowing toward the cooking chamber suction port 12 in the cooking chamber 11 is the suction port of the suction port body 38. 50 is reduced. In addition, a part of the wall surrounding the outer periphery of the suction port 50 of the suction port body 38 is cut out, and the heating means back side 39 is disposed in the space in front of the suction port 50 of the suction port body 38. The opening surface and the heating means back side 39 are in a positional relationship facing each other (see FIG. 12B). With such an arrangement, the circulating air flow in the cooking chamber 11 passes through the vicinity of the heating means back side 39 and then flows into the suction port body 38 through the suction port 50. The position (height) of the inflow range of the circulating airflow is set to a range including the heating means back side 39 by the suction port body 38 and the inflow range is regulated so that the circulating airflow is brought into contact with the heating means back side 39 at a high flow rate. Then, the temperature is raised with high heating efficiency by the heating means rear side 39 and flows into the suction port 38.

A catalyst body 34A is disposed in the suction port body 38, and this catalyst body 34A is heated by radiation from the upper heating means back side 39. As a result, the oxidation catalyst attached to the catalyst body 34A is catalytically activated, and a part of contaminants such as oily smoke and odor components contained in the air in the cooking chamber 11 that has flowed in is adsorbed and oxidatively decomposed to be purified. A part of the air in the cooking chamber 11 circulates except a part of the air exhausted from the cooking chamber exhaust air passage 10, and the air in the cooking chamber 11 passes through the catalyst body 34A many times while circulating. This will increase the purification rate. For this reason, compared with the structure in Embodiment 1 (the structure in which the exhaust from the cooking chamber 11 passes through the catalyst body 34 only once), the purification rate of the exhaust from the cooking chamber 11 and the cooking chamber exhaust air passage 10 is It tends to be high.
In addition, reaction heat is generated in the course of a chemical reaction in which contaminants are oxidatively decomposed at the catalyst body 34A. This heat further heats the passing airflow and blows it out into the cooking chamber 11 from the nozzle 28A as a high-temperature circulating airflow, whereby the object to be heated is cooked.

  The heat insulating space 35a on both side surfaces of the cooking chamber 11 is filled with a heat insulating material 40, and heat leakage from the cooking chamber 11 is reduced to increase heating efficiency, and cooling is suppressed by suppressing temperature rise of surrounding components. Increases efficiency. In the present embodiment, the upper surface, the bottom surface, and the side surface of the cooking chamber 11 have a double wall structure and are filled with the heat insulating material 40 to enhance the heat insulating performance. However, depending on the required heat insulating performance, The heat insulating performance may be further enhanced by filling the heat insulating material 40 with a double wall structure on the back surface or the outer peripheral surface.

FIG. 13 is a rear perspective view of the cooking chamber 11 according to Embodiment 2 with the cooking chamber upper wall 25 removed.
An electric motor 21 is disposed on the rear surface of the fan casing 20A, and a rotation shaft of the electric motor 21 is fixed to a turbo fan 22 in the fan casing 20A. The rotation shaft of the electric motor 21 rotates to make the turbo fan 22 a centrifugal blower. Is the same as in the first embodiment.
In the second embodiment, the circulating airflow heating means 23 provided in the fan casing 20 in the first embodiment is provided in order to heat the circulating airflow by the heat generated by the upper heating means 24 and the catalyst body 34A. Absent.

FIG. 14 shows a perspective view of a state in which the cooking chamber door 7 side according to the second embodiment is pulled out from the cooking chamber 11 and removed. FIG. 15 is an exploded perspective view showing a state in which the cooking chamber door 7 side according to Embodiment 2 is pulled out from the cooking chamber 11 and removed.
The structure of the cooking chamber door 7 and the slide rail 30 is the same as that of the first embodiment.
In the second embodiment, the structure of the tray 27A, the holding unit 31A, and the cooking table 26A is different from that of the first embodiment. Further, an antifouling member 41 is provided in order to improve the cleaning performance and maintenance performance.

  The antifouling member 41 is made of a commercially available aluminum foil or the like, covers the upper surface of the saucer 27A, and holds the oil from the food material to be heated and the juice such as gravy to prevent adhesion to the saucer 27A. It is. The antifouling member 41 is formed of a sheet-like member such as an aluminum foil that can be deformed by the user pressing the tray 27A with his / her hand, etc., and the shape of the plate is adjusted to some extent and maintained. It is preferable to do this. The antifouling member 41 is arbitrarily prepared and used by the user as necessary, and is not necessarily provided. After cooking, the trouble of cleaning the tray 27A is reduced by discarding the antifouling member 41.

  On the bottom surface of the saucer 27A, a substantially horizontal horizontal surface 51 is provided on a part of the back surface side, and an inclined surface 52 that is inclined so as to become higher toward the front is provided on the front surface side of the horizontal surface 51 (see FIG. 17). ). A wind guide wall 37 is formed at the front end of the inclined surface 52.

A cooking table 26 </ b> A is arranged above the antifouling member 41. The leg portion 53A of the cooking table 26A has a height dimension set in accordance with the shape of the bottom surface of the tray 27A so that the mounting surface 70 of the cooking table 26A is substantially horizontal.
An air guide portion 29A is provided on the back side of the leg portion 53A for placing the cooking table 26A on the antifouling member 41 (the tray 27A). That is, in the second embodiment, the air guide portion 29A is integrated with the cooking table 26A. A plurality of turbulence promoting bodies 42 are provided in the vicinity of the end portion of the back surface side of the air guide portion 29A (the nozzle 28A side in the state where the air guide portion 29A is installed in the cooking chamber 11; see FIG. 17). . The air guide part 29A and the turbulent flow promoting body 42 will be described later.

  Further, a guide portion 46 for holding the antifouling member 41 is provided at the lower end portion of the air guide portion 29A. The antifouling member 41 is made of aluminum foil or the like and maintains a shape along the tray 27A to some extent. However, the antifouling member 41 is warped, wrinkled, etc., and is lifted from the tray 27A so as to be completely in close contact with the tray 27. May not be possible. Therefore, the antifouling member 41 is pressed from above by the guide portion 46, and the adhesion degree of the antifouling member 41 to the tray 27A is increased.

FIG. 16 is a front sectional view of the cooking chamber 11 according to the second embodiment.
A heat insulating material 40 is filled in the heat insulating spaces 35a on the upper surface, the bottom surface, and both side surfaces of the cooking chamber 11, thereby improving the heat insulating performance.

On the back surface of the cooking chamber 11, a plurality of nozzles 28A are arranged substantially horizontally. The upper surface on the nozzle 28 side of the air guide portion 29A is disposed at a position slightly lower than the same height as the lower end of the nozzle 28A.
The nozzle 28A is slit-shaped, but the slit width varies depending on the position where it is disposed. When attention is paid to the slit width of each nozzle 28A, the slit width is not uniform, and there are a relatively wide portion and a narrow portion. Further, the slit width is not a symmetric shape with respect to the width direction of the turbo fan 22. The slit width and shape of the nozzle 28 </ b> A and the arrangement of the nozzles 28 </ b> A are set in relation to the air flow blown from the turbo fan 22. That is, the pressure and flow velocity of the air flow that is blown out differ depending on the distance from the turbo fan 22, and the swirl component is generated in the air flow by the rotation of the fan at the left and right even at the same distance. Different. Therefore, the flow velocity and flow rate blown from the nozzle 28A are adjusted by setting the slit width and arrangement of the nozzle 28A so that uneven heating under the object to be heated can be reduced.

A cooking chamber suction port 12 is provided in the suction port body 38 on the back of the cooking chamber 11. By the cooking chamber suction port 12, the inside of the suction port body 38 and the inside of the fan casing 20 </ b> A communicate with each other.
An exhaust air passage connection port 43 </ b> A is provided at the upper center of the back surface of the fan casing 20 </ b> A, and is connected to the cooking chamber exhaust air passage 10.

FIG. 17 is a side sectional view of the main body 1 according to the second embodiment.
The bottom surface of the fan casing 20A is an inclined surface that descends toward the front surface side so that the blowing direction of the air flow from the nozzle 28A is lowered. In addition, the inclination of the upper surface on the nozzle side end of the air guide portion 29A is substantially the same as the inclination of the bottom surface of the fan casing 20A. Further, the lower end of the nozzle 28A is substantially the same height as the front end portion of the bottom surface of the fan casing 20A, and is substantially the same height as or slightly higher than the upper surface of the nozzle side end of the air guide portion 29A. With such a configuration, a series of inclined surfaces that are inclined downward from the bottom surface of the fan casing 20A toward the air guide portion 29A are formed. For this reason, the flow from the bottom surface of the fan casing 20A to the upper surface of the nozzle side end of the air guide portion 29A flows without being obstructed, and the adhesion of the circulating airflow to the air guide portion 29A due to the Coanda effect is enhanced. The airflow to the bottom is good. Further, since the bottom surface of the fan casing 20A is inclined so that the blowing direction of the nozzle 28A is lowered, the fan casing 20A can be connected to the bottom surface on the back side of the tray 27A while increasing the curvature of the air guide portion 29A. The air flow to the bottom surface of the tray 27A of the circulating airflow is improved.

A part of the bottom surface of the tray 27A is an inclined surface 52 having a low back side and a high front side, and the mounting surface 70 of the cooking table 26A is substantially horizontal. For this reason, compared with the structure of the saucer 27 in which the bottom face is horizontal in the first embodiment, in this embodiment, the air current comes closer to the lower part of the object to be heated, and the boundary layer of the object contact surface is Compressed, higher heat transfer is achieved and heating efficiency is improved.
Further, by placing the object to be heated on the placing surface 70, the distance in the height direction from the bottom surface of the tray 27A becomes shorter toward the front side, and the flow path becomes narrower, so the flow velocity of the circulating airflow increases. As the distance from the nozzle 28A increases, the flow velocity and temperature of the airflow tend to decrease due to diffusion, but the flow path formed between the placement surface 70 and the tray 27A is narrowed, and the flow velocity of the airflow is increased. Since heating efficiency increases, uneven heating between the vicinity of the nozzle 28 </ b> A and a distance is reduced.

  In addition, on the bottom surface of the tray 27A, a wind guide wall 37, which is a substantially vertical surface, is provided at an end portion on the side facing the wind guide portion 29A in the depth direction. The flow is bent at the wind guide wall 37 and becomes a flow in the upper surface direction, and the contact of the circulating airflow with the cooking chamber door 7 is reduced. The operation / effect of the circulating air flow generated by the air guide wall 37 is the same as in the first embodiment.

The shape of the holding part 31A on the front side and the back side is changed according to the shape of the tray 27A so that the tray 27A is stably held.
By providing the air guide portion 29A on the leg portion 53A of the cooking table 26A, the air guide portion 29A is not covered with the antifouling member 41, and an attached flow due to the Coanda effect is formed and guided to the bottom surface of the tray 27A.

18A and 18B are diagrams for explaining the turbulent flow promoting body 42 according to the second embodiment. FIG. 18A is an enlarged view showing the vicinity of the turbulent flow promoting body 42, and FIG. 18B is a turbulent flow. FIG. 6 is a top view of the vicinity of a promoting body 42.
The turbulent flow promoting body 42 is a plate-like member having a substantially triangular shape in a side view, and is formed as a convex portion protruding above the air guide portion 29A. A plurality of turbulence promoting bodies 42 are provided across the width direction of the air guide portion 29A (see FIGS. 15 and 16). The height h of the turbulent flow promoting body 42 shown in FIG. 18A is approximately the thickness of the boundary layer of the circulating airflow from the nozzle 28A. The length L of the turbulence promoting body 42 is about twice the height h. Further, as shown in FIG. 18B, the side surface of the turbulence promoting body 42 is inclined by about 15 degrees with respect to the flow direction of the circulating airflow X from the back surface to the front surface of the cooking chamber 11 (θ in FIG. 18B). The turbulence promoting body 42 is arranged as shown in FIG. With such an arrangement of the turbulent flow promoting body 42, when the circulating airflow passes through the vicinity of the turbulent flow promoting body 42, a vertical vortex is generated and the circulating airflow is prevented from being separated from the air guide portion 29A.
In this embodiment, the plate-like turbulent flow promoting body 42 is illustrated as an example, but any shape that generates turbulent flow such as dimples provided on the surface of the air guide portion 29A may be used. The shape is not limited to this.

Next, the operation | movement in the heating cooking of the cooking chamber 11 which concerns on Embodiment 2 is demonstrated.
When the electric motor 21 operates, the turbo fan 22 rotates and sucks the air in the cooking chamber 11. The air in the cooking chamber 11 passes through the catalyst body 34A after passing through the vicinity of the heating means back side 39 of the upper heating means 24A while being accelerated and heated by the contraction of the flow path of the suction port body 38. The circulating airflow is further heated by reaction heat of oxidative decomposition while purifying smoke and oily smoke when passing through the catalyst body 34A, and then flows into the fan casing 20A from the cooking chamber suction port 12 and is sent out from the turbofan 22. Is done. A part of the circulating air flow sent out by the turbo fan 22 flows into the cooking chamber exhaust air passage 10 through the exhaust air passage connection port 43 </ b> A and is exhausted outside the main body 1. On the other hand, most of the circulating airflow sent out by the turbo fan 22 is blown out into the cooking chamber 11 from the nozzle 28A.

  The airflow blown from the nozzle 28A becomes a flow of attachment of the air guide portion 29A due to the Coanda effect, and is guided to the bottom surface of the tray 27A. By passing through the turbulence promoting body 42 provided in the wind guide portion 29A, turbulence is generated in the boundary layer of the airflow blown from the nozzle 28A, and the adhesion flow separation from the wind guide portion 29A is suppressed. For this reason, the circulating airflow flowing through the air guide portion 29A is guided to the bottom surface of the tray 27A with little peeling. While the airflow diffuses along the bottom surface of the tray 27A, the lower part of the object to be heated on the mounting surface 70 of the cooking table 26A is heated toward the front surface and flows upward at the air guide wall 37. The suction port body 38 is again sucked while forming a flow substantially along the upper surface of the cooking chamber 11. A part of the air in the cooking chamber 11 is exhausted from the cooking chamber exhaust air passage 10, but the exhausted air is sucked in between the wall surfaces of the cooking chamber 11 and a slight gap between the cooking chamber door 7 and the like. To be compensated.

  When the user selects / inputs the cooking mode, cooking menu, and heating condition displayed on the display unit 9 through the operation unit 6, a control sequence corresponding to the set cooking mode is called from the storage means, The point where the heating means and the like are controlled is the same as in the first embodiment.

  Next, the control and operation of heating cooking will be described by taking as an example a cooking mode in which ingredients such as fish and meat are directly placed on the cooking table 26 and heated.

(1) Initial stage of cooking In the initial stage of the cooking process, the upper heating means is used so that the protein in the surface layer of the object to be heated is coagulated in a short time to suppress volatilization of internal moisture and the like to maintain the internal juiciness. 24 is controlled to a high output, and the rotational speed of the electric motor 21 is controlled to be relatively higher than the middle and final stages of cooking.

(2) Middle cooking stage In the middle cooking stage, the output of the upper heating means 24 is controlled so that the predetermined cooking chamber temperature is maintained, and the rotation of the electric motor 21 is kept lower than the initial stage. By such control, drying due to contact of the air current of the object to be heated is suppressed.

(3) Final stage of cooking In the final stage of the cooking process, the output of the upper heating means 24 is controlled to be higher than that in the middle stage, and the rotation of the electric motor 21 is controlled to be lower than in the initial stage. By controlling the surface of the food that is to be heated with an appropriate (savory) baked color and volatilizing the water on the surface to make it crisp, the look and taste of the cooking effect and finish are excellent. It is controlled to become.

  In addition, at the initial stage of cooking, a temperature rise in the cooking chamber is detected to calculate the amount of the object to be heated, and thereby a control sequence is selected and control for ensuring safety such as detection of opening / closing of the cooking chamber door 7 is performed. These are the same as in the first embodiment.

  As described above, according to the present embodiment, a space allowing ventilation is provided between the bottom surface of the tray 27A and the mounting surface 70 of the cooking table 26A, and the bottom surface of the tray 27A and the mounting surface 70 of the cooking table 26A. The nozzle 28A is provided at a height between the nozzle 28A, has an inclined surface that descends from the vicinity of the lower end of the nozzle 28A toward the bottom surface of the tray 27A, and guides the air blown from the nozzle 28A to the bottom surface of the tray 27A. A wind part 29A was provided. In the present embodiment, an example in which the air guide portion 29 is configured integrally with the cooking table 26A has been shown, but even in this case, the air flow blown from the nozzle 28A is directed to the air guide portion 29A by the Coanda effect. Since it adheres and is attracted to the bottom surface of the saucer 27A and flows toward the front of the cooking chamber 11, not only the vicinity of the nozzle 28A of the saucer 27A but also a distant place (for example, the vicinity of the cooking chamber door 7) is circulated at high temperature. An air current flows and can be heated over a wide range. Therefore, cooking can be performed for a short time to increase heating efficiency, and energy efficiency is also increased, so that cooking with high cooking ability, safety, long life, and energy saving and low environmental load can be obtained.

  Moreover, in this Embodiment, since the wind guide part 29A was comprised integrally with the cooking stand 26A, even when covering the saucer 27 with the antifouling member 41 comprised with an aluminum foil etc., and cooking table 26A, The integrally configured air guide portion 29 </ b> A is not covered with the antifouling member 41. Therefore, the airflow can directly contact the air guide portion 29A, an appropriate air guide effect can be obtained, and the airflow can be urged to adhere to the bottom surface of the tray 27A, so that the antifouling member 41 is used. Even if it heats stably, it can be set as the heating cooker which can acquire a favorable cooking effect.

  Further, an air guide wall 37 that is a wall surface standing substantially vertically is provided on the side of the tray 27 facing the air guide portion 29A. For this reason, the circulating airflow flowing on the bottom surface of the tray 27 is guided to the wind guide wall 37 and guided upward of the cooking chamber 11. The airflow blown out from the nozzle 28A becomes an adhering flow due to the Coanda effect by the air guide portion 29A, forms a flow along the bottom surface of the tray 27A, and cooks the entire lower portion of the object to be heated. And since this airflow turns into the airflow which goes upwards by the baffle wall 37, since the contact of the airflow to the cooking chamber door 7 is reduced, smoke leak, a temperature rise, and heat loss are reduced, favorable cooking An effect can be obtained and a cooking device having excellent comfort, safety, and heating efficiency can be obtained.

  Further, in the present embodiment, the mounting surface 70 of the cooking table 26A is substantially horizontal, and the bottom surface of the tray 27A is provided with an inclined surface 52 that is low on the side close to the nozzle 28A and high on the far side. The circulating airflow flowing through the bottom surface of the tray 27A having such an inclined surface 52 is a flow that is closer to vertical than the horizontal flow. When the flow of the circulating airflow contacts the object to be heated, the boundary layer of the circulating airflow is compressed, heat transfer is increased, and heating efficiency is improved. In addition, the distance between the mounting surface 70 of the cooking table 26A and the bottom surface of the saucer 27A is also on the far side (for example, the side near the cooking chamber door 7) where the temperature / flow velocity is lower than the side near the nozzle 28A and is difficult to be heated. By narrowing, the flow velocity of the circulating airflow increases, heat transfer is improved, and appropriate heating is performed. Therefore, it is possible to obtain a heating cooker in which uneven heating is reduced and a good cooking effect / finish is obtained.

  Moreover, by providing the turbulent flow promoting body 42 in the air guide portion 29, it is possible to suppress the separation of the attached flow from the air guide portion 29 to the bottom surface of the tray 27 and to form a stable air flow. Therefore, the heating non-uniformity below the object to be heated can be reduced, and the cooking device can obtain a good cooking effect.

  Moreover, when covering the saucer 27A with the antifouling member 41, the guide part 46 at the front edge of the airflow guide part 29A of the cooking table 26 allows the part of the antifouling member 41 connected to the bottom surface of the air guide part 29A and the saucer 27A to be received by the saucer 27A. The antifouling member 41 is prevented from floating. For this reason, the flow of attachment flowing on the surface of the air guide portion 29A can smoothly suppress the turbulence of the unnecessary airflow to the surface of the antifouling member 41 covering the bottom surface of the tray 27A, and follow the shape of the bottom surface of the tray 27A. Since a stable airflow is formed and cooking is performed in a state where there is little unevenness in heating under the object to be heated, a cooking device capable of obtaining a good cooking effect can be obtained.

  The nozzle 28A is composed of a plurality of slits, and the lower end of the slit is provided at substantially the same height as the bottom surface of the fan casing 20A connected to the nozzle 28A. For this reason, since an airflow flows smoothly to the air guide part 29A, adhesion of the airflow to the air guide part 29A can be stabilized. In addition, the slit width of the nozzle 28A is adjusted and set depending on the location so that the flow rate and flow velocity of the blowout from the nozzle 28A are appropriate even if the distance from the turbo fan 22 is different, so that the width direction of the object to be heated Can be heated in the same state, and the heating unevenness can be reduced, and a cooking device can be obtained that has a good cooking effect.

In addition, the bottom surface of the fan casing 20A connected to the nozzle 28A is a flat surface inclined to the front surface side, and the upper surface of the air guide portion 29A on the nozzle 28A side end is an inclined flat surface having substantially the same inclination as the bottom surface of the fan casing 20A. Therefore, the airflow can flow smoothly from the nozzle 28A to the air guide portion 29A. For this reason, the attachment of the airflow to the air guide portion 29A is stably performed.
Further, even if the curvature of the air guide portion 29A is increased, the air guide portion 29A and the bottom surface of the saucer 27A can be connected in the vicinity of the end of the saucer 27A on the nozzle 28A side. For this reason, it is possible to increase the distance between the mounting surface 70 at the nozzle side end of the cooking table 26A, which is disposed below the nozzle 28A and easily heated, and the bottom surface of the tray 27A, and the bottom surface of the tray 27A is attached. By making the heat transfer from the flow appropriate, it is possible to provide a heating cooker in which uneven heating is reduced and a good cooking effect is obtained.

  Further, a part of the heating means rear side 39 of the upper heating means 24A was arranged in the internal space of the suction port body 38, and a part of the upper heating means 24A was arranged in the cooking chamber 11. With such a configuration, the radiation from the upper heating means 24A on the upper surface of the object to be heated in the cooking chamber 11 is not blocked, and a crisp texture and a deliciously baked color on the surface of the food material are produced by the cooking effect of the radiation heating. The finished product can be obtained. Since a part of the heating means back side 39 of the upper heating means 24A is arranged in the internal space of the suction port body 38, the contact of the air flow sucked by the suction port body 38 with the upper heating means 24A is improved, and the air flow is efficiently generated. Can be heated. Further, since the flow path of the circulating airflow flowing through the cooking chamber 11 is reduced at the suction port of the suction port body 38, the circulating airflow is accelerated and efficiently heated by the heating means back side 39 of the upper heating means 24A. Temperature. Since the circulating airflow can be increased in this way, the circulating airflow can be heated without providing the circulating airflow heating means 23 shown in the first embodiment, for example. Therefore, parts cost and assembly cost can be reduced, and a good cooking effect and finish can be obtained, and an inexpensive cooking device can be obtained.

Further, the suction port body 38 is provided with a catalyst body 34A, and this catalyst body 34A is arranged at a position where the radiation of the upper heating means 24 reaches. For this reason, in addition to being heated by the airflow passing through the vicinity of the catalyst body 34A, the catalyst body 34A is heated by radiation from the upper heating means 24, so that the temperature becomes higher and the catalytic activity increases, and higher purification performance is achieved. can get. Further, since the air in the cooking chamber 11 passes through the catalyst body 34A many times while circulating, the air is further purified to increase the cleanliness, and in the cooking chamber 11, the object to be heated by smoke or oily smoke. Coloring and odor transfer to can be reduced, and a good cooking effect and finish can be obtained. Moreover, since the cleanliness of the exhaust from the main body 1 is improved and the cooking work environment of the user is improved, a cooking device that can provide a comfortable cooking environment can be obtained.
Further, the circulating airflow is heated by the reaction heat generated in the process in which the catalytic body 34A purifies by oxidative decomposition, and the temperature of the air blown from the nozzle 28A becomes high, thereby shortening the cooking time. Further, the output of the upper heating means 24A can be reduced by utilizing the reaction heat. In this way, the cooking device can be cooked for a short time with energy saving and can be a cooking device with a low environmental load.

Embodiment 3 FIG.
In the third embodiment, an example in which a part of the configuration in the second embodiment is changed will be described. The present embodiment will be described with reference to FIGS. 19 to 26, focusing on the differences from the second embodiment. In the third embodiment, the same constituent members as those in the first and second embodiments are denoted by the same reference numerals (symbols), and the constituent members described in the first and second embodiments are changed. On the other hand, the description will be given with the symbol “B”. In addition, the induction heating cooking appliance of this Embodiment 3 is the same as that of Embodiment 1 about the structure shown in FIG. 1, FIG.

FIG. 19 is a perspective view in which the cooking chamber upper wall 25 of the cooking chamber 11 according to Embodiment 3 is removed.
In the second embodiment, the suction opening 38 covers a part of the upper surface from the back of the cooking chamber 11, but the suction opening 38 </ b> B of the third embodiment is different in shape from the suction opening 38.

The suction port body 38B is formed so as to cover the front of the cooking chamber suction port 12B provided on the back surface of the cooking chamber 11 with a predetermined space therebetween, and the air suction port 50 toward the front surface and the lower side of the cooking chamber 11. Is open.
Unlike the suction port body 38 of the second embodiment, the suction port body 38 </ b> B is provided across the left and right side surfaces of the cooking chamber 11. Moreover, the upper surface board 54 extended toward the front substantially parallel to the upper surface of the cooking chamber 11 is provided in the front-end part of the suction inlet 50 of the suction inlet body 38B. The upper surface plate 54 is perforated at a predetermined distance from the upper heating unit 24A along the shape of the upper heating unit 24A, and opens an air suction port downward. This hollowed portion is referred to as an upper surface plate ventilation hole 55.

  The catalyst body 34B has the same dimensions as the width direction of the cooking chamber 11 and is provided in the suction port body 38B. The front surface area of the catalyst body 34B facing the airflow direction is larger than that of the second embodiment, the passing air speed of the catalyst body 34B can be reduced, and higher purification performance can be obtained. Increased cleanliness. Moreover, since the reaction heat of purification by oxidative decomposition also increases and the contribution to cooking is also increased, the output of the upper heating means 24A can be made lower than that of the second embodiment, and an energy-saving cooking device is obtained. be able to.

FIG. 20 is a perspective view in which the cooking chamber upper wall 25, the cooking chamber door 7, and the suction port body 38B of the cooking chamber 11 according to Embodiment 3 are removed.
On the back of the cooking chamber 11, a cooking chamber suction port 12B is provided inside the suction port body 38B (see FIG. 19). The cooking chamber suction port 12B does not have a slit shape as in the second embodiment, and the whole is an opening portion and the outer peripheral portion is a bell mouth shape, thereby reducing pressure loss and reducing the pressure to the radial fan 44. The suction is good and the fan's ventilation efficiency is improved.
Further, the air guide wall 37 </ b> B on the front surface side of the tray 27 </ b> B is disposed higher than the mounting surface 70 of the cooking table 26.

FIG. 21 is a perspective view of the components accompanying the fan casing 20 according to the third embodiment.
Inside the fan casing 20, a radial fan 44 is provided as a blowing means. The third embodiment does not include the turbo fan 22 provided in the second embodiment.

  The exhaust air passage connection port 43 </ b> B deviates from the center in the horizontal direction of the radial fan 44 and is arranged at the upper left of the radial fan 44. By controlling to change the rotational direction of the radial fan 44, the direction of the swirl component of the airflow sent from the radial fan 44 is changed, thereby changing the amount of air exhausted from the exhaust air passage connection port 43B. Thus, the exhaust air volume from the exhaust air passage connection port 43B can be adjusted by controlling the rotational direction of the radial fan 44. In the present embodiment, the exhaust air passage connection port 43B is arranged at the upper left, but the present invention is not limited to this, and the same effect can be obtained as long as it is off the center in the horizontal direction.

  Below the radial fan 44, the circulating airflow heating means 23 is disposed, and the airflow heated by the upper heating means 24 and the catalyst body 34 is further heated to raise the temperature. Blowing out makes cooking in a short time possible.

The circulating airflow heating means 23 is provided with a plurality of fins 45 arranged so that the circulating airflow heating means 23 penetrates. The fin 45 increases the heating efficiency of the airflow and improves the temperature of the airflow blown out from the nozzle 28. Moreover, the fin 45 also has a function as a rectification | straightening part, the nonuniformity of the airflow distribution of a horizontal direction is reduced by the fin 45, it rectifies | straightens so that the flow blown out from the nozzle 28 may go straight ahead, and the cooking chamber 11 The disturbance of the circulating airflow in the inside is reduced.
In the present embodiment, the circulating airflow heating means 23 and the fin 45 are integrated, but the fin 45 may be provided as an independent component as a rectifying unit, and by not integrating, the degree of freedom in the fin shape is increased. A higher rectifying effect can also be obtained.

FIG. 22 is a rear perspective view in which cooking chamber upper wall 25, cooking chamber exhaust air passage 10, and suction port body 38B of cooking chamber 11 according to Embodiment 3 are removed.
The electric motor 21 is disposed on the back surface of the fan casing 20. The terminal part of the circulating airflow heating means 23 is arranged outside through both side surfaces of the fan casing 20.

FIG. 23 shows a perspective view of a state in which the cooking chamber door 7 side according to Embodiment 3 is pulled out from the cooking chamber 11 and removed. FIG. 24 is an exploded perspective view of the antifouling member 41 and the cooking table 26B held by the tray 27B according to the third embodiment.
In the third embodiment, the air receiving portion 29B is provided in the tray 27B, and the shape of the bottom surface of the tray 27B is different from the tray 27A of the second embodiment.
As in the second embodiment, the antifouling member 41 substantially reflects the shape of the saucer 27B and covers the saucer 27B to enhance the cleaning performance.

The shape of the leg part 53B of the cooking table 26B is a shape combined with the bottom shape of the tray 27B.
A guide portion 46 is provided at the rear side end of the leg portion 53B of the cooking table 26B. The guide part 46 has a function of pressing the antifouling member 41 against the air guide part 29 </ b> B from the upper side and suppressing the antifouling member 41 from floating from the air guide part 29. When the antifouling member 41 is pressed by the guide portion 46, the shape of the antifouling member 41 is forced so as not to hinder the flow of airflow from the nozzle 28B to the air guide portion 29B, and the bottom surface of the tray 27B from the air guide portion 29B. The float to the connection part is suppressed and peeling of the adhesion flow in the air guide part 29B is suppressed.

FIG. 25 shows a side cross-sectional view of cooking chamber 11 according to the third embodiment. In addition, in FIG. 25, the arrow for demonstrating the flow of the airflow of the suction inlet 38 vicinity is described.
At the lower end of the suction opening 38 </ b> B, a shielding part 58 that extends toward the inside front of the cooking chamber 11 is provided. The upper surface of the shielding portion 58 is configured by an inclined surface that is substantially the same as the inclination of the upper surface of the end portion on the nozzle 28B side of the air guide portion 29B. Due to the shielding surface formed by the shielding part 58 below the nozzle 28B and the air guiding part 29B, the air flow blown out from the nozzle 28B flows around the back of the cooking chamber 11 and the air guiding part 29B to the lower side of the tray 27B. Since it flows on the upper surface of the air guide portion 29B of the saucer 27B without being heated, the heated airflow passes between the saucer 27B and the mounting surface 70 of the cooking table 26B and is used for heating the object to be heated. While increasing, the heat leak from the bottom face of the cooking chamber 11 can be reduced, and the heat insulation measures to keep the outer temperature of the bottom face of the main body 1 below a predetermined temperature for ensuring safety when the user contacts can be reduced.
Further, since the shielding portion 58 is formed integrally with the suction port body 38B, the number of parts can be reduced and the number of assembling steps can be reduced, which has the effect of reducing the product cost.

  Moreover, the antifouling member 41 does not obstruct the airflow to the air guide part 29B because the guide part 46 fixes the antifouling member 41 with the rear side end part of the air guide part 29B of the tray 27B. . Further, the guide portions 46 on the air guide portions 29B on both side surfaces press and fix the antifouling member 41 to the air guide portion 29B, so that the antifouling member 41 is prevented from floating and the shape of the air guide portion 29B is antifouling. Since the difference is reflected in the member 41, the airflow from the nozzle 28B forms a clean attached flow on the bottom surface of the tray 27B.

  The bottom surface of the tray 27B is formed as a curved surface with a relatively large inclination on the side far from the nozzle 28B. The bottom surface of the tray 27B may be referred to as an inclined surface 57. By such a bottom surface shape of the tray 27B, the flow of attachment on the bottom surface of the tray 27B is controlled so that heating unevenness in each part of the bottom surface of the object to be heated having a different distance from the nozzle 28 is reduced. In the second embodiment, the inclined surface 52 of the tray 27A is a monotonous inclined surface, and the increase in the flow velocity and the contact angle below the object to be heated are not finely controlled, but the curved inclined surface 57 as in the third embodiment. By doing so, the heating unevenness is further reduced by finely controlling the degree of acceleration and the contact angle depending on the location.

  The wind guide wall 37 </ b> B on the front side of the tray 27 </ b> B is inclined to the back side and is disposed at a position higher than the placement surface 70 of the cooking table 26. With such a configuration of the air guide wall 37B, the contact of the airflow to the cooking chamber door 7 is further reduced, and the heating efficiency and safety are further improved. Further, by directing the air flow upward on the back surface by the air guide wall 37B, smooth suction is made from the upper surface plate ventilation port 55 of the suction port body 38 on the upper back surface, and a clean circulation flow is formed in the cooking chamber 11 and is unnecessary. An increase in pressure loss due to the generation of a simple vortex is suppressed, and disturbance to the attached flow on the bottom surface of the tray 27B is reduced, so that a better cooking effect is obtained.

  A space having a predetermined height is provided between the upper surface plate 54 and the upper surface of the cooking chamber 11, and airflow can be passed between the upper surface plate 54 and the upper surface of the cooking chamber 11. Air in the cooking chamber 11 is sucked from the upper surface plate vent 55 provided almost entirely around the upper heating means 24A, passes through the space between the upper surface plate 54 and the upper surface of the cooking chamber 11, and is a suction port body. It is sucked into the suction port 38B (see the arrow in FIG. 25). Since the air in the cooking chamber 11 is sucked through the vicinity of the upper heating means 24A, the heating efficiency of the sucked airflow is increased, and the airflow having a higher temperature can be sucked. Moreover, the opening area of the suction port of the suction port body 38 </ b> B is smaller than the flow path cross-sectional area of the circulating airflow flowing through the upper portion of the upper surface plate ventilation port 55 of the cooking chamber 11. That is, the flow path of the air flowing toward the cooking chamber suction port 12 in the cooking chamber 11 is reduced at the suction port of the suction port body 38B and passes through the vicinity of the heating means rear side 39 at a high flow rate.

FIG. 26 shows a front sectional view of cooking chamber 11 according to the third embodiment.
An opening is provided around the upper heating means 24 on the back side of the suction port body 38B, and sucks air while heating the cooking chamber.
Further, the upper plate vent 55 provided in the upper plate 54 of the suction port body 38B is provided with an upper heating means support 56 for supporting the upper heating means 24 (see FIG. 19). The upper heating means support part 56 shields a part of the upper surface plate ventilation hole 55 within a range not affecting the suction, and supports the upper heating means 24A from the lower side.

  A plurality of circular nozzles 28 </ b> B are provided on the back surface of the cooking chamber 11. The hole diameter of each nozzle 28 </ b> B and the interval between the nozzles 28 </ b> B vary depending on the arrangement location. The hole diameter and the installation interval of the nozzle 28B are adjusted and set by controlling the flow rate and flow velocity of the airflow from each nozzle 28B so that the heating unevenness due to the position in the width direction of the object to be heated is reduced.

Next, the operation | movement in the heating cooking of the cooking chamber 11 which concerns on Embodiment 3 is demonstrated.
When the electric motor 21 operates, the radial fan 44 rotates and sucks the air in the cooking chamber 11. The air in the cooking chamber 11 passes through the catalyst body 34B after passing through the vicinity of the heating means back side 39 of the upper heating means 24 while being accelerated and heated by contraction of the flow path of the suction port body. The circulating airflow is further heated by the reaction heat of oxidative decomposition while purifying smoke and oily smoke when passing through the catalyst body 34, then flows into the fan casing 20 from the cooking chamber suction port 12, and is sent out from the radial fan 44. Is done. A part of the circulating airflow sent out by the radial fan 44 flows into the cooking chamber exhaust air passage 10 through the exhaust air passage connection port 43B and is exhausted outside the main body 1. On the other hand, most of the circulating airflow sent out by the radial fan 44 is blown out into the cooking chamber 11 from the nozzle 28B.

  The airflow blown out from the nozzle 28B flows on the upper surface side of the receiving tray 27B by the shielding portion 58, becomes an adhering flow of the air guiding portion 29B by the Coanda effect, and is guided to the bottom surface (inclined surface 57) of the receiving tray 27B. While the airflow diffuses along the bottom surface (inclined surface 57) of the tray 27B, it flows toward the front side while heating the lower part of the object to be heated on the mounting surface 70 of the cooking table 26B. Due to the change in the curved surface of the bottom surface (inclined surface 57) of the tray 27B, the contact speed / angle of the airflow changes depending on the location. In the third embodiment, the airflow is brought into contact with the object to be heated at a higher flow velocity at the front surface side and at an angle closer to the vertical, and cooking is close to the vicinity of the nozzle 28B even in a place where the temperature of the airflow is low because it is far from the nozzle 28B The curved surface of the bottom surface (inclined surface 57) of the tray 27B is formed so as to be effective.

  When the object to be heated is placed on the cooking table 26B, depending on the shape of the object to be heated, stagnation may occur in the air current, resulting in uneven heating. However, in the third embodiment, the rotation direction of the radial fan 44 is controlled to be reversed every predetermined time, and the swirl component of the airflow sent from the radial fan 44 is reversed. When the flow rate changes, the place of stagnation shifts and uneven heating is reduced. In addition, in the cooking process in which the amount of smoke and odor components generated in the cooking chamber 11 increases, the rotation of the radial fan 44 is controlled in the rotational direction in which the exhaust is large, and in the process of heating the cooking chamber 11 rapidly, The rotation of the radial fan 44 is controlled in the direction of rotation with less exhaust, and appropriate cooking is performed.

  When the airflow flowing along the bottom surface of the tray 27B reaches the air guide wall 37B, the airflow flows upward to the back side, proceeds from the top plate vent 55 to the top of the top plate 54, and is sucked into the suction port 38 again. . In the process of being sucked from the upper surface plate vent 55, the airflow is heated by passing through the vicinity of the upper heating means 24A. A part of the air in the cooking chamber 11 is exhausted from the cooking chamber exhaust air passage 10, but the exhausted air is sucked in between the wall surfaces of the cooking chamber 11 and a slight gap between the cooking chamber door 7 and the like. To be compensated.

  When the user selects / inputs the cooking mode, cooking menu, and heating condition displayed on the display unit 9 through the operation unit 6, a control sequence corresponding to the set cooking mode is called from the storage means, The point where the heating means and the like are controlled is the same as in the first embodiment.

Control and operation of heating cooking in the cooking mode in which ingredients such as fish and meat are directly placed on the cooking table 26 and heated are the same as in the first embodiment.
Further, in the initial stage of cooking, the temperature rise in the cooking chamber is detected to calculate the amount of the object to be heated, thereby selecting a control sequence and control for ensuring safety such as detection of opening / closing of the cooking chamber door 7 These are the same as in the first embodiment.

  As mentioned above, in this Embodiment, the mounting surface 70 of the cooking table 26B was made substantially horizontal. Further, the inner side of the bottom surface (inclined surface 57) of the tray 27B is a curved surface having a lower side closer to the nozzle 28B and a larger inclination toward the far side. By adjusting the inclination of the curved surface of the bottom surface of the saucer 27B so as to change the flow velocity and angle in contact with the object to be heated in accordance with the distance from the nozzle 28B, the heating unevenness is reduced and good cooking is achieved. It can be set as the heating cooker which can acquire an effect and a finish.

  Further, an air guide wall 37 that is a wall inclined toward the air guide portion 29B is provided on the side of the tray 27B that faces the air guide portion 29B. Further, the wind guide wall 37 and the bottom surface of the tray 27B are connected by a curved surface, and the upper end of the wind guide wall 37 is configured to be higher than the placement surface 70 of the cooking table 26B. For this reason, the airflow flowing on the bottom surface of the saucer 27 </ b> B is smoothly guided from the bottom surface of the saucer 27 </ b> B to the air guide wall 37, and further guided upward on the back side of the cooking chamber 11 by the air guide wall 37. For this reason, the flow of the circulating airflow which goes to the suction inlet 38B side is formed, disturbance of the airflow in the cooking chamber 11 is reduced, and a favorable cooking effect and finish can be obtained. Moreover, since the contact of the airflow to the cooking chamber door 7 can be reduced, the safety and heating efficiency are increased, and the contamination of the cooking chamber door 7 is also reduced, so that the cooking performance, safety, heating efficiency, and maintainability are excellent. It can be a heating cooker.

  Moreover, the guide part 46 which makes the antifouling member 41 comprised with an aluminum foil etc. closely_contact | adhere to the wind guide part 29B was provided in the cooking table 26B. For this reason, when covering the tray 27B with the antifouling member 41, the antifouling member 41 does not inhibit the flow between the nozzle 28B and the air guide part 29B, and the adhesion of the antifouling member 41 to the air guide part 29B is improved. Since it raises, the adhesion flow to the saucer 27B bottom face can be formed stably, and it can be set as the heating cooker which can obtain a favorable cooking effect and finish.

  Further, the nozzle 28B is configured by a plurality of holes, and the lower end of the hole is configured to be substantially the same height as the bottom surface of the fan casing 20 connected to the nozzle 28B. For this reason, since an airflow flows smoothly to the air guide part 29B, adhesion of the airflow to the air guide part 29B can be stabilized. In addition, since the diameter of the hole constituting the nozzle 28B is adjusted and set depending on the location so that the flow rate / flow velocity of the blowout from the nozzle 28B is appropriate even if the distance from the radial fan 44 is different, the heating object The width direction can be heated in the same state, and unevenness in heating can be reduced, and a cooking device that can obtain a good cooking effect can be obtained.

  Further, a part of the upper heating means 24 </ b> A was disposed in the space of the suction port body 38, and a part of the upper heating means 24 </ b> A was disposed in the cooking chamber 11. For this reason, the favorable cooking effect and finish by radiant heating can be acquired, without blocking the upper heating means 24A radiation to the upper surface of the to-be-heated object in the cooking chamber 11. Furthermore, in the present embodiment, an upper surface plate 54 that extends forward in parallel with the upper surface of the cooking chamber 11 is provided at the front end portion of the suction port of the suction port body 38B, and this upper surface plate 54 is provided for the upper heating means 24A. The air in the cooking chamber 11 was sucked from the top plate vent 55 formed by hollowing out along the shape. For this reason, the airflow contacts with the upper heating means 24A in the process of the airflow passing through the upper surface plate ventilation port 55, and the flow path of the airflow flowing through the cooking chamber 11 at the upper surface plate ventilation port 55 is reduced. Therefore, the airflow is efficiently heated by the upper heating means 24A. Further, since the upper surface plate ventilation port 55 is provided on substantially the entire outer periphery of the upper heating means 24A, the airflow is heated by almost the entire upper heating means 24A and heated to a higher temperature. Since the circulating airflow can be increased in this way, the temperature at which the nozzle 28B blows out can be increased, cooking can be performed for a short time, the output of the circulating airflow heating means 23 can be reduced, and energy saving can be achieved. A cooking device with a low load can be obtained.

  Further, the circulation airflow heating means 23 is provided with fins 45, and the fins 45 are arranged in a direction parallel to the blowing direction of the nozzle 28B, so that the heat transfer area is increased and the airflow heating efficiency by the circulation airflow heating means 23 is increased. At the same time, since it is rectified by the fin 45 and blown out from the nozzle 28, the temperature of the airflow is raised, the nonuniformity of the horizontal airflow distribution is reduced, and the flow direction of the blown out airflow is rectified so as to go straight forward. In addition to reducing the disturbance of the circulating airflow in the cooking chamber 11 to obtain a good cooking effect, it is possible to provide a high-performance heating cooker with a short cooking time.

  Further, in the present embodiment, the radial fan 44 is used as the air blowing means, and the operation is performed by switching the rotation direction of the fan by the electric motor 21. For this reason, the position of the stagnation of the airflow in the cooking chamber 11 can be changed, and the heating cooker can reduce the heating unevenness and obtain a good cooking effect / finish.

  Further, by arranging the exhaust air passage connection port 43B at a position shifted from the center position in the horizontal direction of the radial fan 44 and switching the rotation direction of the electric motor 21, the exhaust air volume can be increased or decreased. For this reason, it can be set as the heating cooker from which the raise of the temperature increase rate in the cooking chamber 11 and air cleanliness improve, and a short cooking and a favorable cooking space are obtained.

Embodiment 4 FIG.
In the fourth embodiment, an example in which a part of the configuration in the third embodiment is changed will be described. The fourth embodiment will be described with reference to FIGS. 27 to 34, focusing on the differences from the third embodiment. Moreover, in Embodiment 4, the same number (symbol) is attached | subjected to the structural member similar to the structural member in Embodiment 1-3, and the structural member described in Embodiment 1-32 was changed. On the other hand, description will be made with the symbol “C” attached. In addition, the induction heating cooker of this Embodiment 4 is the same as that of Embodiment 1 about the structure shown in FIG. 1, FIG.

FIG. 27 is a rear perspective view of cooking chamber 11 according to the fourth embodiment.
In the fourth embodiment, the shape of the fan casing 20C is different from that of the third embodiment. The cooking chamber exhaust air passage 10 is connected to the lower side of the fan casing 20C. The circulating airflow heating means 23 is disposed through both side surfaces of the fan casing 20C, and the terminal portion is disposed outside the fan casing 20C, as in the third embodiment.

FIG. 28 is a front side perspective view in which the cooking chamber upper wall 25 and the cooking chamber door 7 of the cooking chamber 11 according to Embodiment 4 are removed.
The suction port body 38 has a shape that covers a part of the upper surface from the back surface of the cooking chamber 11, as in the second embodiment.
A water storage section 47 is provided on the back side of the cooking table 26C. The water reservoir 47 is detachably locked to the cooking table 26C. The water reservoir 47 will be described later.

FIG. 29 is a perspective view of components accompanying the fan casing 20C according to the fourth embodiment.
In the fourth embodiment, as in the second embodiment, a turbo fan 22 as a blowing unit is provided inside the fan casing 20C. In the fourth embodiment, the turbo fan 22 is used as the air blowing means. However, a sirocco fan or a radial fan may be used. This is not a limitation.

A scroll casing having air outlets 61 and 62 on the left and right is formed inside the fan casing 20C. The fan casing 20C converts the dynamic pressure component of the airflow sent from the turbofan 22 into a static pressure, so that a higher static pressure is obtained and the flow velocity / flow rate from the nozzle 28C is increased.
A lower air passage 63 is formed below the left and right outlets 61 and 62 over the left and right direction of the fan casing 20C. A circulating airflow heating means 23 is provided in the lower air passage 63. When the circulating airflow flows around the outer periphery of the circulating airflow heating unit 23 in the lower air passage 63, the contact between the circulating airflow and the circulating airflow heating unit 23 increases, and the heating efficiency is improved. Thereby, there exists an effect which blows off a hotter air current from the nozzle 28C.

FIG. 30 shows a perspective view of a state where the cooking chamber door 7 side according to the fourth embodiment is removed from the cooking chamber 11. FIG. 31 shows an exploded perspective view of the cooking chamber door 7 side according to the fourth embodiment.
Also in the fourth embodiment, the antifouling member 41 described in the second and third embodiments can be attached to the tray 27C as necessary, but here, the antifouling member 41 is not attached. The state is illustrated.

  The shape of the bottom surface of the tray 27C of the fourth embodiment is different from that of the third embodiment. A convex curved surface is provided at the center of the bottom surface of the tray 27C. This convex curved surface is referred to as a curved surface 64.

The shape of the leg portion 53C of the cooking table 26C is a shape that is combined with the shape of the tray 27C.
A guide portion 46C is provided at the rear side end of the leg portion 53C of the cooking table 26C. The guide part 46C will be described later.

  The water storage unit 47 is a container having substantially the same width as the cooking table 26C and capable of storing water therein. A detachable water storage cover 48 is provided on the upper side of the water storage section 47 to facilitate the water injection into the water storage section 47 and the cleaning of the scale attached to the inside of the water storage section 47. Further, the water reservoir cover 48 is provided with a plurality of holes, and is configured so as not to prevent the diffusion of water vapor in the water reservoir 47 vaporized by the high temperature airflow from the nozzle 28C.

FIG. 32 shows a side cross-sectional view of cooking chamber 11 according to the fourth embodiment.
The guide portion 46 of the third embodiment has a structure in which the antifouling member 41 is pressed against the air guide portion 29B from the upper side (see FIGS. 23 to 25), but the guide portion 46C of the fourth embodiment is guided. The antifouling member 41 is sandwiched from above and below the wind portion 29C (see FIG. 31). That is, the guide portion 46C has a shape that can go around the bottom surface side of the air guide portion 29C of the tray 27C and be fixed with the antifouling member 41 interposed therebetween. When the antifouling member 41 is pressed by the guide portion 46C, the antifouling member 41 is prevented from protruding into the flow of the air flow blown from the nozzle 28C, and the antifouling member 41 is prevented from floating at the air guide portion 29C. Then, the shape of the antifouling member 41 is forced to be in close contact with the air guide portion 29C. By doing in this way, there exists an effect which suppresses that the antifouling member 41 inhibits the flow of the airflow in the air guide part 29C, and forms the adhesion flow of the air guide part 29C stably.

  A catalyst body 34 is disposed at the end of the cooking chamber exhaust air passage 10 on the side connected to the fan casing 20C. The configuration, operation, and effect of radiation heating by the circulating airflow heating means 23 are the same as those in the first embodiment. In the fourth embodiment, the suction port body 38 is also provided with a catalyst body 34A. The circulating airflow passes through the catalyst body 34 </ b> A provided in the suction port body 38, so that the air in the cooking chamber 11 is purified, and the exhaust air is further provided here when passing through the cooking chamber exhaust air passage 10. In addition, the degree of cleanness of the exhaust to the outside is further increased because the catalyst body 34 purifies the catalyst. In addition, it is possible to decompose and remove pollutants such as different odor components by differentiating the catalyst components attached to the catalyst body 34 and the catalyst body 34A provided at two locations, and further increase the cleanliness of the exhaust gas. Can do.

The water storage portion bottom surface 49 of the water storage portion 47 is formed to have substantially the same inclination as the inclination of the top surface of the air guide portion 29C on the nozzle 28C side end. Since the water storage unit bottom surface 49 of the water storage unit 47 has such a shape, the airflow blown from the nozzle 28C can be rectified so as to be parallel to the inclination of the upper surface of the air guide unit 29C on the nozzle 28C side. By such a rectifying action, it is possible to improve the adhesion of the airflow to the air guide portion 29C. Moreover, since the high temperature airflow immediately after blowing from the nozzle 28C passes through the lower part of the water storage section bottom surface 49 of the water storage section 47, the water in the water storage section 47 is quickly heated and vaporized by this high temperature airflow to create the cooking chamber. 11 can be diffused and circulated. The steam diffused and circulated in the cooking chamber 11 is heated by the upper heating means 24 and the circulating airflow heating means 23 to become superheated steam, and the superheated steam condenses on the object to be heated and heated up to 100 ° C. The effect can be obtained in a short time and shorten the cooking time.
In addition, by setting the amount of water in the water storage section 47 to a predetermined amount that is small enough to evaporate and disappear in the initial stage of the cooking process, the cooking chamber is exhausted from the cooking chamber exhaust air passage 10 after the middle of the cooking process. Excess water vapor is exhausted from within 11. By doing in this way, it does not become the cooking effect and finish which the surface of the to-be-heated material was boiled with superheated steam.

FIG. 33 is a front sectional view of cooking chamber 11 according to the fourth embodiment.
A convex curved surface 64 is provided at the center of the bottom surface of the tray 27. The planar shape of the curved surface 64 shown here is a shape obtained by rounding the base angle of an isosceles triangle whose apex angle is the rear center of the saucer 27C, as shown in a so-called teardrop shape. It is. On the curved surface 64, a part of the attachment flow of the tray 27 </ b> C is guided to flow to the left front side or the right front side by the side portion 64 a extending so as to spread from the center on the back side of the tray 27 </ b> C to the left and right sides. Moreover, the flow guided by the side portion 64a and the flow on the upper surface of the curved surface 64 smoothly merge by the arc-shaped portion 64b that is connected so as to draw an arc from the side portion 64a toward the front center. Thus, due to the positional relationship with the air outlets 61 and 62 that blow out the wind from the turbo fan 22, the left front side and the right front side of the mounting surface 70 of the cooking table 26C of the present embodiment are relatively airflow. However, by forming an air flow toward the left front side and the right front side by the curved surface 64, there is an effect of flowing the air evenly below the object to be heated and reducing uneven heating of the object to be heated. .

  In addition, the shape of the curved surface 64 shown in the present embodiment is an example, and if the airflow is guided to a place where the flow velocity or the flow rate of the airflow supplied from the blowing unit is relatively small, The shape of the curved surface 64 is not limited to that illustrated in FIGS.

FIG. 34 is a front sectional view of the suction port body 38 portion of the cooking chamber 11 according to the fourth embodiment.
A cooking chamber suction port 12 is provided on the back surface of the cooking chamber 11 in the suction port body 38.
A plurality of nozzles 28 </ b> C are provided on the back surface of the cooking chamber 11. The nozzle 28C of the present embodiment is configured by a slit shape and a circular shape. The shape, interval, hole diameter and slit width of the nozzle 28C vary depending on the location of the nozzle 28C. Considering conditions such as the flow direction, flow velocity, and flow rate of the airflow supplied from the turbo fan 22 as the air blowing means, the shape of the tray 27C, etc., heating unevenness due to the position in the width direction of the object to be heated is reduced. The shape, interval, hole diameter and slit width of the nozzle 28C are adjusted and set, and the flow rate and flow velocity from each nozzle 28C are controlled.

  When the user selects / inputs the cooking mode, cooking menu, and heating condition displayed on the display unit 9 through the operation unit 6, a control sequence corresponding to the set cooking mode is called from the storage means, The point where the heating means and the like are controlled is the same as in the first embodiment.

Control and operation of heating cooking in the cooking mode in which ingredients such as fish and meat are directly placed on the cooking table 26 and heated are the same as in the first embodiment.
Further, in the initial stage of cooking, the temperature rise in the cooking chamber is detected to calculate the amount of the object to be heated, thereby selecting a control sequence and control for ensuring safety such as detection of opening / closing of the cooking chamber door 7 These are the same as in the first embodiment.

  As described above, in the present embodiment, the convex curved surface 64 is provided between both side surfaces of the bottom surface of the tray 27C. For this reason, the airflow flowing through the bottom surface of the tray 27C is guided to the left front side surface and the right front side surface, and the heating condition on the front surface side of the mounting surface 70 of the cooking table 26 is adjusted and set. For this reason, appropriate cooking is performed also at the left and right ends on the front side, and a cooking device that can obtain a good cooking effect and finish can be obtained.

  Moreover, by providing the guide part 46C in the cooking table 26C, the degree of adhesion of the antifouling member 41 to the tray 27C is increased, and the antifouling member 41 can be inhibited from inhibiting the flow of airflow. For this reason, since the adhesion flow to the bottom surface of the tray 27C is formed with less peeling / disturbance, the lower part of the object to be heated is appropriately cooked, and a cooking device capable of obtaining a good cooking effect / finishing can be obtained.

  The nozzle 28C includes a plurality of holes and slits, and the lower ends of the holes and slits are provided at substantially the same height as the bottom surface of the fan casing 20 that is an air passage connected to the nozzles. For this reason, the airflow smoothly flows from the nozzle 28 </ b> C to the air guide portion 29, and adhesion of the airflow to the air guide portion 29 can be stabilized. The shape, interval, hole diameter, and slit width of the nozzle 28C are to be heated in consideration of conditions such as the flow direction, flow velocity, and flow rate of the airflow supplied from the turbo fan 22 that is a blowing means, and the shape of the tray 27C. It is adjusted so that heating unevenness due to the position in the width direction of the object is reduced. For this reason, since a to-be-heated material is similarly heated regardless of the position in the width direction and heating unevenness is reduced, a cooking device that can obtain a good cooking effect can be obtained.

  By using the turbo fan 22 and including the fan casing 20 having the scroll casing having two outlets, it is possible to provide a high static pressure blowing means, and the blowing flow velocity / flow rate from the nozzle 28C is increased to increase the heating efficiency. The cooking time can be shortened and energy can be saved, and a cooking device having high cooking performance and low environmental load can be obtained.

  The water storage part 47 is disposed above the air guide part 29C, and the inclination of the bottom surface of the water storage part 47 is substantially the same as the inclination of the upper surface of the air guide part 29C on the nozzle 28C side. That is, the water storage portion bottom surface 49 of the water storage portion 47 is inclined substantially parallel to the inclined surface of the air guide portion 29C that overlaps the water storage portion bottom surface 49 of the water storage portion 47 when viewed from the top surface. For this reason, a substantially parallel air passage is formed between the water storage portion bottom surface 49 of the water storage portion 47 and the air guide portion 29C, and the air flow blown from the nozzle 28C is rectified to prevent the air flow from adhering to the air guide portion 29C. Can be good. Moreover, since the water in the water storage part 47 is vaporized by the high-temperature air flow immediately after being blown out from the nozzle 28 </ b> C, and the cooking time is shortened, a high cooking performance and a good cooking effect can be obtained. It can be a heating cooker.

  DESCRIPTION OF SYMBOLS 1 Main body, 2 housing | casing, 3 housing | casing upper surface, 4 top plate, 5 air intake / exhaust port cover, 6 operation part, 7 cooking chamber door, 8 mounting part, 8a right mounting part, 8b left mounting part, 8c center Placement part, 9 Display part, 10 Cooking room exhaust air path, 10A Cooking room exhaust air path, 10a Back side vertical part, 11 Cooking room, 12 Cooking room suction port, 13 Housing exhaust port, 14 Housing intake port, 15 Cooling air exhaust air passage, 16 chamber, 17 substrate case unit, 18 induction heating coil unit, 18a induction heating coil unit, 18b induction heating coil unit, 18c induction heating coil unit, 19 cooking chamber storage, 20 fan casing, 20A Fan casing, 20C Fan casing, 21 Electric motor, 22 Turbo fan, 23 Circulating airflow heating means, 24 Upper heating means, 24A Upper heating Heating means, 25 Cooking chamber upper wall, 26 Cooking table, 26A Cooking table, 26B Cooking table, 26C Cooking table, 27 Receptacle, 27A Receptacle, 27B Receptacle, 27C Receptacle, 28 nozzle, 28A nozzle, 28B nozzle, 28C nozzle, 29 Air guide part, 29A Air guide part, 29B Air guide part, 29C Air guide part, 30 Slide rail, 31 Holding part, 31A Holding part, 32 Temperature sensor, 33 Airtight member, 34 Catalyst body, 34A Catalyst body, 34B Catalyst body , 35a heat insulation space, 35b heat insulation space, 36 rectifying section, 37 air guide wall, 37B air guide wall, 38 suction port body, 38B suction port body, 39 heating means rear side, 40 heat insulating material, 41 antifouling member, 42 turbulence Flow promoting body, 43 Exhaust air passage connection port, 43A Exhaust air passage connection port, 43B Exhaust air passage connection port, 44 Radial fan, 45 Fin, 46 Id part, 46C guide part, 47 water storage part, 48 water storage part cover, 49 water storage part bottom face, 50 suction port, 51 horizontal surface, 52 inclined surface, 53 leg part, 53B leg part, 53C leg part, 54 top plate, 55 top Face plate vent, 56 Upper heating means support part, 57 Inclined surface, 58 Shielding part, 61 Air outlet, 62 Air outlet, 63 Lower air passage, 64 Curved surface, 64a Side part, 64b Arc-shaped part, 70 Mounting surface, 100 Induction Cooking cooker.

Claims (4)

A cooking chamber provided inside the housing;
Upper heating means provided above the cooking chamber;
A cooking table disposed in the cooking chamber and having a substantially horizontal mounting surface for mounting an object to be heated;
A saucer provided below the cooking table;
An inlet and an outlet provided in the cooking chamber;
A suction means for generating suction force in the suction port to suck air in the cooking chamber, and blowing means for blowing out the air sucked from the suction port from the blowout port,
Between the bottom surface of the saucer and the placement surface for placing the object to be heated of the cooking table, a space that allows ventilation is provided,
The outlet is provided at a height position between the bottom surface of the saucer and the mounting surface of the cooking table,
Providing a convex portion on the bottom of the saucer,
The convex portion is
Between the both sides of the saucer, forming an air passage through which air from the air outlet vents ,
The saucer is
A wind guide provided on the side facing the wall on the air outlet side and the wall on the air outlet side arranged at a height lower than the lower end of the air outlet, and arranged at a position where the upper end is higher than the height of the air outlet. And a wall,
The air guide wall extends substantially vertically,
The cooking device , wherein the bottom surface of the tray and the air guide wall are connected by a curved surface . The saucer is
Heating cooker according to claim 1, further comprising a side wall connecting the wall and the baffle wall of the outlet side. The heating cooker according to claim 1 or 2 , further comprising fins arranged so as to form a flow path substantially parallel to a blowing direction of the blower outlet. A top plate covering the top opening of the housing;
Heating means provided in the housing and for heating an object to be heated placed on the top plate;
The heating cooking apparatus characterized by mounting the heating cooker according to any one of claims 1 to 3 below the heating means.

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