JP5239310B2 - Cooking machine - Google Patents

Description

  The present invention relates to a cooking device that blows hot air onto an object to be heated to heat the object to be heated in a short time.

  2. Description of the Related Art In general, a cooking device that heats an object to be heated in a short time by directly blowing high-speed hot air along with the microwave on the object to be heated is known (Patent Document 1).

This heating cooker blows hot air generated by the hot air supply means 101 as a high-speed flow from a jet port 103 provided at the upper and lower portions of the heating chamber 102, and heats the high-speed flow of hot air directly on the object to be cooked. It is like that. In order to heat the food to be cooked uniformly, the hot air passage 104 is tapered to make the jet pressure uniform, and at the same time, the food to be cooked is placed on the turntable 105 and rotated.
JP-A-7-108234

  Since the heating cooker described in the above-mentioned Patent Document 1 blows hot hot air on the food to be cooked in a high-speed flow, the amount of heat that the hot air has can be given to the food to be cooked in a short time. It has the effect that it can be cooked in a very short time compared to an oven with hot air, and is used in fast food stores and the like.

  However, when there are still many customers, there is a waiting time until cooking is possible, and a further reduction in time has been demanded.

  The present invention has been made in view of such a conventional problem, and aims to further shorten the time for cooking without impairing usability.

In order to solve the above conventional problems, the heating cooker of the present invention, while being opened and closed by the door to be
A heating chamber for storing a heated object, high-frequency generating means for supplying microwaves to the heating chamber to heat the object to be heated, and supplying hot air to the heating chamber provided outside the rear wall of the heating chamber. A hot air supply means for heating an object to be heated with hot air, a duct that is provided on the left and right outside the upper wall of the heating chamber and guides the hot air from the hot air supply means to a hot air outlet provided at the front of the upper wall of the heating chamber; , a radiant heater on for radiant heating of the object to be heated of the heating chamber be in the heating chamber, a lower radiant heater provided in the bottom portion of the heating chamber, provided in a wall substantially central portion after said heating chamber And a heated object placing member provided so as to be freely drawn into the heating chamber. The lower radiation heater and the hot air inlet are provided below the heated object placing member. The hot air from the hot air outlet is Data, wherein the object to be heated mounting member, through said lower radiant heater is configured to be sucked into the hot air inlet, the upper radiant heater, in conjunction with opening and closing of the door up and down in the heating chamber , the upper position when the door opened, the slit when the door closing is configured to positioned lower position, provided in the heating chamber side walls of deriving the terminal portion and the terminal portion of the upper radiant heater is choke structure are the.

  As a result, during heating, the upper radiant heater is located near the object to be heated, so that the radiant heat is effectively and strongly applied to the object to be heated, and at the time of opening the door for taking in and out the object to be heated. Since the upper radiant heater is located in the upper part of the heating chamber, it does not become an obstacle to taking in and out the object to be heated.

In the cooking device of the present invention, since the radiant heat from the upper radiant heater is effectively and strongly applied to the object to be heated, the heating time of the object to be heated can be greatly shortened, and the heating time can be shortened. The upper radiation heater does not become an obstacle to taking in and out the heated object when the door for taking in and out the heated object is opened, and the usability is also good.
Moreover, since the slit provided in the terminal part of the upper radiant heater and the heating chamber side wall leading to this terminal part has a choke structure, the high frequency from the high frequency generating means does not leak out of the heating chamber.

A first invention is a heating chamber that is opened and closed by a door and accommodates an object to be heated, high-frequency generating means for supplying microwaves to the heating chamber to heat the object to be heated, and outward of the heating chamber rear wall in a hot air supply means for heating the object to be heated in the hot air supplying hot air to the heating chamber is provided, wherein provided on the left and right of the heating chamber upper wall outward the hot air supply hot air to the heating chamber on the front wall from the means A duct for guiding to a hot air outlet provided in a section, an upper radiant heater in the heating chamber for radiantly heating an object to be heated in the heating chamber, and a lower radiant heater provided in the bottom of the heating chamber And a hot air inlet provided in a substantially central part of the rear wall of the heating chamber, and a heated object mounting member provided so as to be freely drawn into the heating chamber, the lower radiation heater and the hot air inlet Is provided below the heated object placing member, Hot air the upper radiant heater from wind spout the heated object mounting member, through said lower radiant heater is configured to be sucked into the hot air inlet, the upper radiant heating heater, the door in conjunction with the opening and closing vertically in the heating chamber, when the door opening is at the upper position, when the door closing is configured to positioned lower position to derive the terminal portion and the terminal portion of the upper radiant heater slit provided in the heating chamber sidewalls, Yes and the choke structure, during heating, the upper radiant heater is applied to the radiation heat effectively and strongly object to be heated from will be located near the object to be heated, the The heating time of the heated object can be greatly shortened, and when the door is opened and removed, the upper radiant heater is located at the top of the heating chamber, so there is no hindrance to the movement of the heated object and the usability Good Become as.

Further, the second invention is the first invention, wherein the front upper wall of the heating chamber is formed in an upward slope toward the rear, and a hot air outlet is provided in the upward slope portion so that the hot air is directed to the object to be cooked. Yes and configured to blow obliquely, it is possible to heat the object to be heated in a short time deviation by thicker layers of less then high temperature hot air distribution of hot air that strikes the upper surface of the heated object.

Further, the third invention is the first and second inventions, wherein the heating chamber is provided with a first hot air outlet on the front wall front portion , and a second hot air outlet is also formed on both sides of the lower portion of the heating chamber rear wall. The hot air suction port is provided between the second hot air outlets to circulate the hot air in the heating chamber, and the hot air blown from the front upper part to the rear lower part of the heating chamber increases the density of the object to be heated. Wrapping and heating, heating is performed more uniformly because the hot air blown from both sides of the lower part of the rear wall of the heating chamber compensates for the insufficient heating caused by the small amount of hot air that has flowed to the lower surface after heating the upper surface of the object to be heated. Can be performed in a shorter time, and the safety when the door is opened can be improved .

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 to 6, 1 is a main body of the cooking device, 2 is a heating chamber provided in the main body, and has a substantially rectangular cross section with a large width relative to the vertical width, and the front opening 3 is formed at the lower part of the main body. It can be opened and closed by a pivotally supported door 4. The heating chamber 2 is provided with a first hot air outlet 5 formed of a large number of holes at the front of the upper wall in a strip shape over the entire width thereof, and a second hot air outlet 6 formed of a large number of holes at the left and right lower portions of the rear wall. Is provided. Further, a hot air suction port 7 composed of a large number of holes is provided at a substantially central portion of the back wall between the second hot air outlets 6 of the heating chamber 2. The total opening area of the second hot air outlet 6 is set to be approximately 1/10 or less of the first hot air outlet 5. Further, the upper wall of the front part of the heating chamber provided with the first hot air outlet 5 is formed in a downward slope toward the rear as apparent from FIG. 3, so that the hot air from the first hot air outlet 5 is cooked. It is configured to be sprayed obliquely toward the object 8. Further, the first hot air outlet 5 is configured such that the hole diameter on the front side (opening 3 side) is, for example, 7 mm and the back side is 10 mm, so that the amount of ejection from the hole portion on the back side is larger than that on the front side. It is. Incidentally, the hole diameter of the second hot air outlet 6 provided on both sides of the lower part of the heating chamber is, for example, 7 mm.

  Reference numeral 9 denotes an upper radiant heater provided in the heating chamber 2 so as to move up and down in the heating chamber in conjunction with opening and closing of the door 4. That is, as shown in FIGS. 3 to 5, the upper radiant heater 9 has a terminal portion at one end thereof led out of the heating chamber through a slit 2a provided on the side wall of the heating chamber 2, and the coil lead A wire is connected to the power supply unit, and is connected to the door rotation support arm 4b via a link 4a. When the door 4 is opened, it is positioned above the heating chamber 2, and when it is closed, a lower object to be heated is connected. It interlocks with the door 4 so as to be located in the vicinity of 8. The radiant heater 9 has a cantilever structure that supports only the terminal side. However, the other side may be supported in some form, and the terminal portion and the side wall of the heating chamber that leads out the terminal portion may be supported. The slit 2a needs to be configured to apply a choke structure so that high frequency from a high frequency generating means to be described later does not leak out of the heating chamber. The upper radiant heater 9 may be formed by bending a sheathed heater into a U-shape so that its outer periphery has a cross-sectional shape similar to that of the heating chamber. It is used as a set of several lamp heaters, such as a lamp heater having a high speed, that is, a high heat resistance, for example, an argon heater in which argon gas is sealed in a crystallized glass tube.

Reference numeral 10 denotes hot air supply means provided on the rear wall of the heating chamber 2, which sucks the air in the heating chamber 2 from the hot air inlet 7 and circulates it into the heating chamber 2 from the first and second hot air outlets 5 and 6. Blower 11
And a heater 12 that heats the air from the blower 11. As is apparent from FIG. 6, the blower 11 is provided independently in the lateral direction of the heating chamber 2 and is attached to the blower case 13 so that the fan case 12 of the two blowers 11 is covered with the blower case 13. It has become. And the duct 15 is attached to the upper surface proper position of this air blower case 13 via the confluence | merging duct 14 (refer FIG. 3) which joins the air from the air blower opening (not shown) of each said air blower case 13, This duct 15 The end opening 15 a is communicated with the first hot air outlet 5 provided over the entire width of the front portion of the upper wall of the heating chamber via the second duct 16. The merging duct 14 is provided with a diversion hole 16 for diverting about one-tenth or less of the air from the blower 11 to a blower guide (not shown) formed on both sides inside the blower case 13. Although not shown, the guide communicates with the second hot air outlet 6 below the heating chamber. Further, the guide tube 7 a of the hot air inlet 7 at the lower part of the heating chamber is opened in the blower case 13, and the air from the blower 11 is supplied to the first through the junction duct 14, the duct 15, and the second duct 16. It is ejected from the hot air outlet 5 into the heating chamber 2, and is ejected into the second hot air outlet 6 skein heating chamber 2 through the diverting hole 16 of the merging duct 14 and the air blowing guide, and the air in the heating chamber 2 sucks in hot air A circulating flow sucked into the blower 11 through the port 7 and the guide cylinder 7a is formed.

  The heater 12 is provided in the duct 15 and is incorporated through a heater opening 15b (see FIG. 6) provided on one side of the duct 15. As shown in FIG. 4, the heater 12 is unitized by incorporating a substantially U-shaped duct heater 18 through a lever 17 a in a heater holding frame 17, and the heater mounting plate 19 is screwed to the side of the duct 15. And fixed. In the figure, 19a is a sheathed heater insertion hole, and 20 is a motor of the blower 11.

  Reference numeral 21 denotes a member to be heated provided in the heating chamber 2, which is provided on one side of the heating chamber so as to be freely drawn out to one of support members 22 such as ceramics provided in two upper and lower stages. The heated object placing member 21 is for placing the heated object 8 and is located above the position of the hot air inlet 7 as shown in FIG. The hot air which heated the to-be-heated material 8 is comprised so that it may flow to the said hot air inlet 7 (it can pass). Reference numeral 24 denotes a lower radiant heater provided at the bottom of the heating chamber so as to be positioned below the heated object placing member 21, which radiates and heats the heated object 8 and heats the heated object sucked into the hot air inlet 7. The hot air is reheated. In the figure, reference numeral 25 denotes a plurality of raised ribs provided in the front-rear direction of the bottom of the heating chamber, which improves the strength of the bottom of the heating chamber and has a shape that does not interfere with the hot air blown forward from the second hot air outlet 6. It is as.

  Reference numeral 27 denotes a magnetron serving as a high frequency generating means for supplying microwaves to the heating chamber 2, and two magnetrons are provided in the machine chamber 28 on the side of the heating chamber 2. In addition to the magnetron 27, the machine room 27 is provided with a high-pressure transformer 29, a cooling fan (not shown) for cooling these components, a control unit (not shown) for controlling the components, and the like. An operation unit (not shown) for instructing operation on / off, various cooking, and displaying the state is provided on the front side of the main body 1 facing the front of the machine room. Reference numeral 30 denotes a waveguide for guiding the microwaves radiated from the antennas 31 of the magnetrons 27 to the heating chambers. Two waveguides corresponding to the magnetrons 27 are received at the center of the upper wall of the heating chamber 2. is there. Reference numeral 32 denotes a rotating antenna that radiates microwaves from the waveguide 30 into the heating chamber 2, and one is provided at a substantially central portion of one common microwave radiation chamber 33 communicated with each waveguide 30. The rotation driving motor (not shown) is provided in the motor cooling duct 34. Reference numeral 35 denotes a ceiling plate provided in the lower opening of the common microwave radiation chamber 33, which is formed of ceramic or the like that can transmit microwaves.

Reference numeral 36 denotes a cooling fan provided on the fan shaft of the blower 11 for circulating hot air, which cools the space between the main body 1, the heating chamber 2 and the blower case 13 and the machine chamber 28. The cooling fan 36 sucks outside air from an air inlet 37 provided on the back surface of the main body 1 and cools the main body 1 by flowing the outside air between the main body 1 and the heating chamber 2 and the blower case 13 and the machine chamber 28. The cooled hot air is exhausted to the outside from an exhaust port 38 provided at one upper corner of the back surface of the main body.

  Next, the operation of the heating cooker with the above configuration will be described.

  First, when the user opens the door 4, the radiant heater 9 rises to the upper part of the heating chamber 2 through the door rotation support arm 4b and the link 4a. Then, the user puts an object to be heated, for example, frozen pizza, into the heating chamber 2 where the upper radiation heater 9 is raised and widened. In this case, as described above, since the upper radiation heater 9 is raised and the heating chamber 2 is widened, it is easy to put an object to be heated into the heating chamber 2, and the usability is not impaired. This is the same when taking out the object to be heated at the end of heating. During heating, even if the upper radiant heater 9 is in the lower part of the heating chamber 2, it rises by opening the door. Easy to do.

  Next, when the user puts an object to be heated and closes the door 4, the upper radiant heater 9 descends to the lower part of the heating chamber 2 via the door rotation support arm 4b and the link 4a and is positioned near the object to be heated. Will do.

  When the user turns on the operation switch in this state, the control unit starts energizing each magnetron 27, the hot air supply means 10, the lower radiation heater 24, etc., and controls them according to a predetermined sequence.

  First, the blower 11 of the hot air supply means 10 starts rotating, the duct heater 18 of the heater 12 generates heat, and the upper and lower radiant heaters 9 and 24 of the heating chamber 2 also generate heat. When the object to be heated is a frozen object such as a frozen pizza, each magnetron 27 starts oscillating and radiates microwaves, which are guided by the waveguide 30 to reach the microwave radiation chamber 33, As the rotating antenna 32 rotates, microwaves are radiated almost uniformly throughout the heating chamber 2 to heat the article 8 to be heated from the inside.

  On the other hand, the upper and lower radiant heaters 9 and 24 radiately heat an object to be heated from above and below by heat generation. In this case, since the upper radiant heater 9 moves from the upper part to the lower part of the heating chamber 2 and is located near the object to be heated, the radiant heat is effectively applied to the object to be heated. Will be heated strongly. That is, the amount of radiant heat from the upper radiant heater 9 is absorbed by the front and rear, left and right side walls of the heating chamber, and most of it is absorbed by the object to be heated. The heating time of the object to be heated can be greatly shortened. Here, since the radiant heater 9 is a lamp heater having high heat resistance, the radiant heat is applied to the object to be heated at the same time as the energization is started, and the heating time is further increased as compared with the sheathed heater or the like. Can be shortened.

  Further, the hot air supply means 10 ejects the air from the blower 11 from the first hot air outlet 5 to the heating chamber 2 through the merge duct 14, the duct 15, and the second duct 16, and the diversion hole 16 of the merge duct 14. Then, the air is ejected from the second hot air outlet 6 into the heating chamber 2 through the air blowing guide. At that time, the air flow from the blower 11 is heated to a high temperature by the heater 12 in the duct 15 to become hot air, and heats the upper surface of the object to be heated 8 in the heating chamber 2.

The hot air that has heated the upper surface of the object to be heated 8 passes through the object-to-be-heated mounting member 21 around the object to be heated 8 and heats the lower surface of the object to be heated along the lower surface of the object to be heated 8. Is sucked from the hot air suction port 7 to the blower 11 and circulates between the heating chamber 2 and the hot air supply means 10. At that time, the hot air sucked from the hot air suction port 7 at the lower part of the heating chamber to the blower 11 is reheated by the lower radiant heater 24 at the bottom of the heating chamber, and becomes a hot circulating hot air. Further, a part of the hot air from the blower 11 is jetted forward along the both side walls of the heating chamber from the second hot air outlets 6 on both sides of the lower portion of the heating chamber, and hot air spilled around the lower surface of the object 8 to be heated. The lower surface of the article to be heated 8 is heated by joining. On the other hand, the lower radiant heater 24 heats the lower part of the article to be heated 8 with hot air by the radiant heat.

  Here, most of the hot air that heats the object to be heated 8 is jetted obliquely toward the object to be heated 8 from the first hot air outlet 5 provided in the front upper portion of the heating chamber 2, and the hot air inlet port. Since 7 is provided in the lower rear part of the heating chamber 2, the hot air from each hole constituting the first hot air outlet 5 extends long from the front to the rear side of the heated object 8 when contacting the heated object 8. It will be. Each hole is provided in a strip shape over the entire width of the heating chamber 2, and the hole diameter of each hole on the rear side is larger than the front side of the heating chamber so that a large amount of hot air is ejected. Therefore, more hot air is supplied to the rear side of the object to be heated 8 over the entire width of the object to be heated 8. As a result, the entire area of the object to be heated 8 is heated almost uniformly, and heating with less unevenness in burnt eyes or the like becomes possible.

  On the other hand, as described above, a large amount of hot air flows to the rear side of the object to be heated 8 and wraps around the lower surface side of the object to be heated 8. In this heating cooker, hot air is jetted forward from the second hot air jets 6 on both sides of the rear lower part of the heating chamber 2 to heat the lower front part of the article 8 to be heated. Moreover, the hot air from the second hot air outlet 6 is higher in temperature than the hot air from the second hot air outlet 5 that heats the upper surface of the article to be heated 8 and causes a slight temperature drop. The front part of the lower surface of the object 8 can be efficiently heated. In addition, it is also heated by radiant heat from a lower radiant heater located below the article 8 to be heated. Therefore, the entire lower surface of the article to be heated 8 can be heated substantially uniformly.

  The hot air blown out from the first and second hot air outlets 5 and 6 of this cooking device is set to 10 to 12 m / sec, which is slightly weaker than the hot air blowing type hot air flow velocity of 16 m / sec described in the conventional example. In addition, a hot air layer having a high density is formed on the upper surface of the object to be heated 8 in combination with the oblique application of the hot air, and the entire area of the object to be heated 8 is heated uniformly. In other words, as in the conventional example, when hot air hits the object to be heated in a perpendicular state, part of the hot air hits the object to be heated and reverses upward, and the lateral spread of the hot air with high temperature becomes thin. When hot air strikes the object to be heated obliquely as in the form of, the upward spots of hot air disappear and all of them spread along the upper surface of the object to be heated. The heated object is encased in the hot air layer having a high density, and almost the entire area of the object to be heated 8 is heated almost uniformly.

  And since the hot air for heating to-be-heated material 8 spouts toward the rear part from the upper wall front part of the heating chamber 2 as mentioned above, even if the door 4 may be opened in the middle of heating, the hot air in the heating chamber is vigorous. Spraying toward the user can be prevented. That is, when the door 4 is opened during cooking, the control unit stops the blower 11, but the blower 11 continues to rotate by inertia force and continues to blow hot air, but the hot air blows toward the back side opposite to the door 4. Therefore, the momentum of the hot air ejected from the heating chamber opening 3 can be greatly reduced as compared with the conventional one. At this time, hot air is blown forward from the second hot air outlet 6 on both sides of the rear lower part of the heating chamber 2, but the amount is as small as about one-tenth of the hot air from the first hot air outlet 5, and the door There is almost no hot air jetted by the force of the inertial force of the blower 11 when 4 is opened, and the jetting moment can be suppressed to be extremely small as compared with the prior art.

In addition, since two blowers 11 that supply hot air are provided in the horizontal direction along the horizontally long shape of the heating chamber 2, the amount of air can be increased as compared with the case of a single blower 11. That is, in the case of a horizontally long heating chamber, the fan diameter of the blower 11 is regulated by the narrow vertical dimension of the heating chamber. Therefore, the fan diameter of the blower 11 must be selected to be relatively small, and the air volume is inevitably small. In this embodiment, the heating chamber 2 is set to a horizontally long size and heated. Since the two blowers 11 having left and right fan diameters about the vertical dimension of the chamber are provided, the air volume can be increased accordingly. Accordingly, the slow flow rate of hot air can be compensated for by increasing the amount of hot air, and the amount of heat applied to the object to be heated 8 can be made equal to or higher than that of the conventional one, enabling heating in a shorter time. Become. Of course, in this case, the amount of heat for heating the air from the blower 11 is the same as that in the conventional case. In this embodiment, the lower radiant heater 24 at the bottom of the heating chamber is replaced with a sheathed heater of 1500 W. The book and the duct heater 18 are one U-shaped sheathed heater of 2900W.

  Furthermore, the circulation path such as the heating chamber 2 and the hot air supply means 10 and the duct 15 connecting them with each other has an airtight structure so that only the air in the heating chamber 2 and the hot air supply means 10 circulates. It is possible to circulate hot air at a higher temperature than that in which the hot air is circulated while taking a part of the hot air and discharging it to the outside.

  On the other hand, the microwaves from each magnetron 27 are guided to the two waveguides 30 and collected in one microwave radiation chamber 33, and are heated from the rotary antenna 32 having a size that almost covers the ceiling of the heating chamber 2. Therefore, the object to be heated 8 can be microwave-heated strongly and almost uniformly. In this embodiment, the rotating antenna 32 is configured as one, but the rotating antenna 32 may be two rotating antennas having different diameters, or the rotation may be stopped or rotated toward an arbitrary place as an antenna having strong radio wave directivity. Thus, it is possible to heat more uniformly.

  Due to the synergistic effect of the operation as described above, the object to be heated 8 can be cooked in a very short time in this cooking device. For example, heating six pieces of bread is about 75 seconds, and one hamburger-type one that is cut and opened with bread and cheese is heated in about 40 seconds, which is much shorter than the conventional household microwave oven. As time cooking became possible, the heating of the six breads had almost uniform scorching.

  As described above, since the radiant heat from the upper radiant heater is effectively and strongly applied to the object to be heated, the heating cooker of the present invention can greatly shorten the heating time of the object to be heated and can be heated in a short time. At the same time, the upper radiant heater does not become an obstacle to taking in and out of the heated object when opening the door for taking in and out the heated object, and it is easy to use. It can be applied to a wide range of heating devices.

External appearance perspective view of the heating cooking machine in Embodiment 1 of this invention External perspective view when the door is opened Sectional view when the door is opened Cross section viewed from the front when the door is closed External perspective view of the main body with the housing removed The exploded perspective view of the principal part

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Heating chamber 4 Door 5 1st hot air outlet 6 2nd hot air outlet 7 Hot air inlet 9 Upper radiation heater 10 Hot air supply means 12 Heater 15 Duct 24 Lower radiation heater 27 Magnetron (high frequency generation means)
30 Waveguide

Claims (3)

A heating chamber that is opened and closed by a door and accommodates an object to be heated, high-frequency generating means for heating the object to be heated by supplying microwaves to the heating chamber, and the heating chamber provided outside the heating chamber rear wall Hot air supply means for supplying hot air to the heated object to heat the object to be heated, and hot air provided on the left and right outside the upper wall of the heating chamber and hot air from the hot air supply means provided at the front of the upper wall of the heating chamber A duct for guiding to a jet outlet, an upper radiation heater in the heating chamber for radiantly heating an object to be heated in the heating chamber, a lower radiation heater provided at the bottom of the heating chamber, and the rear of the heating chamber A hot air inlet provided in a substantially central portion of the wall, and a heated object placement member provided so as to be freely drawn into the heating chamber ,
The lower radiant heater and the hot air suction port are provided below the heated object mounting member, and hot air from the hot air outlet exits the upper radiant heater, the heated object mounting member, and the lower radiation. It is configured to be sucked into the hot air inlet through the heater,
Wherein the radiant heater, in conjunction with opening and closing of the door up and down in the heating chamber, the upper position when the door opened, when the door closing is configured to positioned lower position,
A heating cooker in which a terminal portion of the upper radiation heater and a slit provided on a side wall of the heating chamber leading out the terminal portion have a choke structure . The cooking device according to claim 1 , wherein the front upper wall of the heating chamber is formed in an upward gradient toward the rear, and a hot air jet is provided in the upward gradient portion so that the hot air is blown obliquely to the object to be cooked. . The heating chamber is provided with first hot air outlets on the left and right of the front part of the upper wall, and also provided with second hot air outlets on both sides of the lower part of the rear wall of the heating chamber, and hot air suction between the second hot air outlets. The cooking device according to claim 1 or 2, wherein a mouth is provided to circulate hot air in the heating chamber .

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