JP2013040704A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cooking time by improving heating efficiency when only one tray is used for cooking.SOLUTION: A heating chamber 10 has a first cooking space positioned at an upper section of the heating chamber 10, and a second cooking space positioned below the first cooking space. A housing has a first accommodating section 610 accommodating a first heater 400, and a second accommodating section 640 accommodating a second heater 410. A centrifugal blower includes a blower fan 500 having an air intake section, and a fan casing 510 surrounding the blower fan 500. The blower fan 500 blows the air toward the front in the rotating direction of the blower fan 500, and a control means changes the rotating direction between forward rotation and backward rotation. The fan casing 510 has a shape to guide the wind from the blower fan 500 mainly to the first accommodating section 610 when the blower fan 500 rotates backward, and to guide the wind from the blower fan 500 mainly to the second accommodating section 640 when the blower fan 500 rotates forward.

Description

  The present invention relates to a cooking device, and more particularly to a cooking device capable of hot air circulation type cooking.

  Japanese Patent Application Laid-Open No. 2004-61092 (Patent Document 1) is a prior document that discloses a cooking device capable of hot-air circulation type cooking.

  The blowing means of the heating cooker described in Patent Document 1 includes a centrifugal fan, a reversible rotary motor that can rotate forward and reverse, and the centrifugal fan, and a suction port and an upper surface outlet. It is comprised by the air blower which consists of a two-way branch fan casing which communicates with a heating chamber in a side part blower outlet, and branches the air suck | inhaled from the suction inlet into an upper surface part blower outlet direction and a side part blower outlet direction. The hot air heated by the first heater installed as a heating means is introduced into the heating chamber from the top surface outlet, and the hot air heated by the second heater is introduced from the side surface outlet.

JP 2004-61092 A

  In the heating cooker, in a state where one stage cooking is performed in a state where one tray on which an object is to be cooked is disposed in the heating chamber, and two trays on which the object is to be disposed are disposed in the heating chamber. Some can perform both cooking and cooking in two stages.

  In the conventional cooking device, the entire heating chamber is heated both during the first stage cooking and during the second stage cooking. Therefore, there was room for improvement in the heating efficiency for heating the food to be cooked during the first stage cooking.

  This invention is made | formed in view of said problem, Comprising: It aims at providing the heating cooker which can improve the heating efficiency at the time of one-step cooking, and can shorten cooking time.

  A heating cooker according to the present invention is provided with a box, a heating chamber that is provided in the box and stores the food to be cooked therein, heating means for heating the food to be cooked in the heating chamber, and heating the hot air of the heating means A centrifugal blower introduced into the chamber, and a control means for controlling the heating means and the centrifugal blower are provided. A heating chamber has the 1st cooking space located in the upper part of this heating chamber, and the 2nd cooking space located under this 1st cooking space. The heating means includes a first heater for heating the first cooking space and a second heater for heating the first cooking space and the second cooking space. The box has a first housing part for housing the first heater and a second housing part for housing the second heater. The centrifugal blower includes a blower fan having an air intake portion and a fan casing surrounding the blower fan. The box body has a suction port communicating with the air intake portion on the inner surface constituting the first cooking space, a first air outlet communicating with the suction port via the first storage portion, and a second storage portion. It has the 2nd blower outlet connected to a suction mouth, and has the 3rd blower outlet connected to the suction mouth via the 2nd storage part in the inner surface which constitutes the 2nd cooking space. The blower fan blows air toward the front side in the rotation direction of the blower fan, and the rotation direction is switched between forward rotation and reverse rotation by the control means. The fan casing has a shape that mainly guides the wind from the blower fan to the first housing portion when the blower fan rotates in the reverse direction and guides the wind from the blower fan to the second housing portion when the blower fan rotates in the forward direction. .

  Preferably, when heating only the first cooking space, the control means operates only the first heater and reversely rotates the blower fan.

  Preferably, when the first cooking space and the second cooking space are heated, the control means operates the second heater and rotates the blower fan in the forward direction.

  Preferably, the fan casing opposes the blowing direction during reverse rotation of the blower fan and communicates with the first housing portion, and the second housing faces the blowing direction during forward rotation of the blower fan. A second delivery port communicating with the section.

  In one form of this invention, a 1st blower outlet is located above the 1st cooking space, and a side. The 2nd blower outlet is located in the side of the 1st cooking space. The third blower outlet is located on the side of the second cooking space and below the second blower outlet.

  According to the present invention, the cooking efficiency can be shortened by improving the heating efficiency during one-stage cooking.

It is a perspective view which shows the external appearance of the heating cooker which concerns on Embodiment 1 of this invention. It is a perspective view which shows the state which opened the heat insulation door in the heating cooker which concerns on the same embodiment. It is the figure which looked at the state at the time of 1st stage cooking from the direction shown by the arrow III of FIG. It is the figure which looked at the state at the time of a two-step cooking from the direction shown by arrow IV of FIG. It is sectional drawing seen from the VV arrow direction of FIG. It is sectional drawing seen from the arrow VI-VI line arrow direction of FIG. It is the figure seen from the arrow VII-VII line arrow direction of FIG. It is a perspective view which shows the structure of the heating means and centrifugal blower in the heating cooker which concerns on the same embodiment. In the cooking-by-heating machine which concerns on the embodiment, it is a partial side view which shows the state in which the ventilation fan is reversely rotating. In the cooking-by-heating machine concerning the embodiment, it is a partial side view showing the state where the ventilation fan is rotating forward. It is a partial side view which shows the state which is blowing in the 1st accommodating part by the air blower fan reversely rotated at the time of 1st stage cooking. It is a partial cross section figure which shows the flow of the hot air at the time of 1st stage cooking. It is a partial side view which shows the state currently ventilated to the 2nd accommodating part by the ventilation fan currently forward | rotating at the time of two-step cooking. It is a partial cross section figure which shows the flow of the hot air at the time of 2 steps | paragraphs cooking. In the heating cooker which concerns on Embodiment 2 of this invention, it is a partial side view which shows the state in which the ventilation fan is reversely rotating. In the cooking-by-heating machine concerning the embodiment, it is a partial side view showing the state where the ventilation fan is rotating forward. In the cooking-by-heating machine which concerns on the modification of the embodiment, it is a partial side view which shows the state in which the ventilation fan is reversely rotating. In the cooking-by-heating machine which concerns on this modification, it is a partial side view which shows the state in which the ventilation fan is rotating forward.

  Hereinafter, the heating cooker which concerns on Embodiment 1 of this invention is demonstrated. In the following description of the embodiments, the same or corresponding parts in the drawings are denoted by the same reference numerals, and the description thereof will not be repeated.

(Embodiment 1)
FIG. 1 is a perspective view showing an appearance of a heating cooker according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing a state where the heat insulating door is opened in the heating cooker according to the present embodiment. FIG. 3 is a view of the state during one-stage cooking as viewed from the direction indicated by the arrow III in FIG. FIG. 4 is a view of the state during two-stage cooking as seen from the direction indicated by the arrow IV in FIG.

  As shown in FIGS. 1 and 2, the heating cooker 1 according to Embodiment 1 of the present invention is provided with a box body 100 having an open front surface that has been heat-insulated by a heat insulating means (not shown), and the box body 100. And a heating chamber 10 for storing an object to be cooked. The opening on the front surface of the box body 100 is located at the front end of the heating chamber 10.

  A heat insulating door 200 is provided on the front side of the box body 100 to close the opening so as to be freely opened and closed. In the present embodiment, the heat insulating door 200 has a vertical opening structure, but is not limited thereto, and may have a horizontal opening structure.

  The heat insulating door 200 is provided with a display unit 210 that displays the temperature in the heating chamber 10 and cooking conditions. Moreover, in the heat insulation door 200, the operation part 220 for the user of the heating cooker 1 to input cooking conditions is provided. The display unit 210 and the operation unit 220 are connected to a control unit that is a control unit arranged in a part of the box body 100.

  Further, the heat insulating door 200 is provided with a window portion 230 that allows the inside of the heating chamber 10 to be visually recognized from the outside of the heating cooker 1. The window 230 is made of a transparent material that can block electromagnetic waves and has heat insulation properties.

  A packing (not shown) is provided around the opening of the box 100. Therefore, in the state where the heat insulation door 200 is closed, the inside of the heating chamber 10 is sealed by the box body 100 and the heat insulation door 200 via packing.

  As shown in FIGS. 2 to 4, the heating chamber 10 is surrounded by five surfaces of the box 100. Specifically, the heating chamber 10 includes an upper surface 101 positioned above, two side surfaces 102 positioned laterally to face each other, a lower surface 103 positioned below to face the upper surface 101, and a heat insulating door. It is surrounded by a rear surface 104 located on the opposite side to the 200 side.

  Each of the two side surfaces 102 is provided with a first tray support portion 110 for supporting the first tray 300 on which an object to be cooked is placed. The first tray support portions 110 provided on each of the two side surfaces 102 face each other.

  Each of the two side surfaces 102 is provided with a second tray support portion 111 for supporting a second tray 310 on which an object to be cooked is placed. The second tray support portions 111 provided on each of the two side surfaces 102 are opposed to each other. The second tray support unit 111 is located below the first tray support unit 110.

  Here, a state in which the object to be cooked is placed on only the first tray 300 and is heated and cooked is referred to as one-stage cooking. A state where an object to be cooked is placed on both the first tray 300 and the second tray 310 and cooked by heating is referred to as two-stage cooking.

  As shown in FIG. 3, in the heating cooker 1 a at the time of one-stage cooking, the first tray 300 is disposed on the first tray support 110 and the second tray 310 is disposed on the second tray support 111. Not.

  In this state, a first cooking space 11 is formed in the upper part of the heating chamber 10. Specifically, the first cooking space 11 is surrounded by the upper surface 101, the upper portion of each of the two side surfaces 102, the upper portion of the rear surface 104, and the upper surface of the first tray 300.

  In the heating chamber 10, a second cooking space 12 is formed below the first cooking space 11. That is, the second cooking space 12 is a remaining part other than the first cooking space 11 in the heating chamber 10. Specifically, the second cooking space 12 is surrounded by the lower surface of the first tray 300, the lower portions of the two side surfaces 102, the lower portion of the rear surface 104, and the lower surface 103.

  As described above, in the first-stage cooking, an object to be cooked is arranged in the first cooking space 11 and is cooked by heating. Therefore, the second cooking space 12 is not heated during the first stage cooking.

  As shown in FIG. 4, in the heating cooker 1 b during two-stage cooking, the first tray 300 is disposed on the first tray support 110 and the second tray 310 is disposed on the second tray support 111. The

  In this state, a first cooking space 11 and a second cooking space 12 are formed in the heating chamber 10. Note that the second cooking space 12 is divided into an upper second cooking space 12 a located above the second tray 310 and a lower second cooking space 12 b located below the second tray 310.

  As described above, during the two-stage cooking, an object to be cooked is placed in both the first cooking space 11 and the second cooking space 12 and is cooked. Therefore, the second cooking space 12 is also heated during the two-stage cooking.

  In this embodiment, although the 1st cooking space 11 and the 2nd cooking space 12 were formed in the heating chamber 10, the number of cooking spaces is not restricted to these two, Three or more may be provided.

  In the box body 100, a suction port 120 for sucking the gas in the heating chamber 10 is provided on the inner surface constituting the first cooking space 11. Specifically, a suction port 120 made up of a plurality of punch holes is provided in a portion of the rear surface 104 located in the first cooking space 11. However, the configuration of the suction port 120 is not limited to a plurality of punch holes, and may include a plurality of slits or nets.

  Moreover, in the box 100, the 1st blower outlet connected to the suction inlet 120 is provided in the inner surface which comprises the 1st cooking space 11. As shown in FIG. Specifically, a first air outlet made up of a plurality of punch holes is provided in a portion of each of the two side surfaces 102 located in the first cooking space 11 and the upper surface 101. The details of the upper first outlet located on the upper surface 101 of the first outlet will be described later.

  The first lateral outlet 130 located on each of the two side surfaces 102 is provided at a position above the first tray support 110. The side first air outlets 130 located on each of the two side surfaces 102 face each other.

  The plurality of punch holes constituting the first lateral outlet 130 are provided at predetermined intervals from the front to the rear on each of the two side surfaces 102. However, the configuration of the side first air outlet 130 is not limited to a plurality of punch holes, and may include a plurality of slits or nets.

  Furthermore, in the box 100, the 2nd blower outlet 140 connected to the suction inlet 120 is provided in the inner surface which comprises the 1st cooking space 11. As shown in FIG. The second outlet 140 is located on the side of the first cooking space 11. Specifically, a second air outlet 140 made up of a plurality of punch holes is provided in a portion of the rear surface 104 located in the first cooking space 11.

  The plurality of punch holes constituting the second air outlet 140 are provided separately on the left and right sides with the suction port 120 interposed therebetween in a side view. However, the structure of the 2nd blower outlet 140 is not restricted to a some punch hole, You may consist of a some slit or a net | network.

  Moreover, in the box 100, the 3rd blower outlet connected to the suction inlet 120 is provided in the inner surface which comprises the 2nd cooking space 12. As shown in FIG. The third air outlet is located on the side of the second cooking space 12 and below the second air outlet 140. Specifically, a third air outlet made up of a plurality of punch holes is provided in a portion of the rear surface 104 located in the second cooking space 12.

  The third air outlet includes an upper third air outlet 141 located in the upper second cooking space 12a and a lower third air outlet 142 located in the lower second cooking space 12b. However, the configuration of each of the upper third outlet 141 and the lower third outlet 142 is not limited to a plurality of punch holes, and may include a plurality of slits or nets.

  FIG. 5 is a cross-sectional view seen from the direction of arrows VV in FIG. 6 is a cross-sectional view as seen from the direction of the arrow VI-VI in FIG. 7 is a view as seen from the direction of the arrow VII-VII in FIG. FIG. 8 is a perspective view showing the configuration of the heating means and the centrifugal blower in the heating cooker according to the present embodiment. In FIG. 8, the upper surface 101, the side surface 102, and the duct 600 are shown through.

  As shown in FIGS. 5 to 8, the heating cooker 1 has a heating means for heating an object to be cooked in the heating chamber 10. The heating means is connected to the control unit and controlled by the control unit. The heating means includes a first heater 400 for heating the first cooking space 11 and a second heater 410 for heating the first cooking space 11 and the second cooking space 12.

  The first heater 400 is located above the upper surface 101. In the present embodiment, the first heater 400 is configured by arranging one heater so as to meander. However, the configuration of the first heater 400 is not limited to this, and for example, a plurality of linear heaters may be arranged in parallel.

  The second heater 410 is located behind the rear surface 104. The second heater 410 is located behind the second air outlet 140, the upper third air outlet 141, and the lower third air outlet 142.

  In the present embodiment, one annular heater is bent and arranged so as to pass behind the second outlet 140, the upper third outlet 141, and the lower third outlet 142, and the second A heater 410 is configured. However, the configuration of the second heater 410 is not limited to this, and for example, a plurality of linear heaters may be arranged in parallel.

  As shown in FIGS. 7 and 8, an upper first air outlet 150 is provided near the first heater 400 on the upper surface 101. The plurality of punch holes constituting the upper first air outlet 150 are provided over the entire upper surface 101 at predetermined intervals on the upper surface 101. However, the configuration of the upper first air outlet 150 is not limited to a plurality of punch holes, and may include a plurality of slits or nets.

  As shown in FIGS. 5 to 8, on the outside of the heating chamber 10 in the box body 100, a duct 600 that covers the upper part and the upper surface 101 of each of the two side surfaces 102 and surrounds the first heater 400 is disposed. Further, a rear cover 630 that surrounds the second heater 410 and a centrifugal blower described later is provided behind the rear surface 104. The box 100 includes a duct 600 and a rear cover 630.

  The box 100 includes a first housing portion 610 that houses the first heater 400 between the upper surface 101 and the duct 600. Further, the box body 100 includes two ventilation paths 620 that are located between each of the two side surfaces 102 and the duct 600 and respectively connect the first housing portion 610 and the first lateral outlet 130. Further, the box body 100 includes a second accommodating portion 640 that accommodates the second heater 410 between the rear surface 104 and the rear cover 630.

  The heating cooker 1 according to the present embodiment includes a dielectric heating device (not shown) disposed below the lower surface 103. The induction heating device includes a magnetron and the like. However, the heating cooker 1 does not necessarily include a dielectric heating device.

  The centrifugal blower introduces hot air from the heating means into the heating chamber 10. Specifically, the centrifugal blower includes a blower fan 500 having an air intake portion 502 that takes air into the centrifugal blower, a drive motor (not shown) that can rotate forward and reverse, and a fan that surrounds the blower fan 500. A casing 510. The centrifugal blower is connected to the control unit and controlled by the control unit.

  The air intake unit 502 is located at the center of the blower fan 500. The air intake unit 502 communicates with the suction port 120.

  The blower fan 500 has a plurality of blades 501. In the present embodiment, each of the plurality of blades 501 has an airfoil cross-sectional shape. However, the cross-sectional shape of each of the plurality of blades 501 is not limited to the airfoil, and may be, for example, a flat plate shape.

  The blower fan 500 blows air toward the front side in the rotation direction of the blower fan 500, and the rotation direction is switched between forward rotation and reverse rotation by the control means. By appropriately changing the shape of the plurality of blades 501, the relationship between the air volume during forward rotation and the air volume during reverse rotation of the blower fan 500 can be adjusted.

  The fan casing 510 mainly guides the wind from the blower fan 500 to the first housing portion 610 when the blower fan 500 rotates in the reverse direction, and mainly stores the wind from the blower fan 500 when the blower fan 500 rotates in the second direction. A shape leading to the portion 640 is provided.

  In the present embodiment, the fan casing 510 is opposed to the air blowing direction when the blower fan 500 rotates in reverse, and communicates with the first housing portion 610 and the air blower when the blower fan 500 rotates forward. There are three second outlets 512, 513, and 514 that face the direction and communicate with the second accommodating portion 640. The second delivery port 512, the second delivery port 513, and the second delivery port 514 are positioned around the blower fan 500 at a predetermined interval.

  That is, the inlet 120 communicates with the upper first outlet 150 and the lateral first outlet 130 via the first accommodating portion 610 through the air intake portion 502 and the first delivery port 511. Further, the suction port 120 is connected to the second air outlet 140, the upper third air outlet 141, and the lower third air outlet through the air receiving portion 502 and the second delivery ports 512, 513, and 514 and the second housing portion 640. 142.

  Hereinafter, in the heating cooker 1 which concerns on this embodiment, the relationship between the rotation direction of the ventilation fan 500 and the flow of the hot air introduce | transduced in the heating chamber 10 is demonstrated.

  FIG. 9 is a partial side view showing a state where the blower fan is rotating in the reverse direction in the heating cooker according to the present embodiment. FIG. 10 is a partial side view showing a state where the blower fan is rotating forward in the cooking device according to the present embodiment.

  As shown in FIG. 9, in the state where the blower fan 500 rotates in the direction indicated by the arrow 20 and reversely rotates, there are many in the direction indicated by the arrow 30 from the first delivery port 511 facing the blower direction of the blower fan 500. The wind is sent.

  On the other hand, a slight amount of wind is sent in the direction indicated by the arrow 31 from the second outlet 512 located along the air blowing direction of the air fan 500 that is rotating in reverse. Similarly, a slight amount of wind is sent in the direction indicated by the arrow 32 from the second outlet 513 positioned along the blowing direction of the blowing fan 500 rotating in the reverse direction. Similarly, a slight amount of wind is sent in the direction indicated by the arrow 33 from the second outlet 514 that is positioned along the blowing direction of the blowing fan 500 that is rotating in the reverse direction.

  As shown in FIG. 10, in the state in which the blower fan 500 rotates in the direction indicated by the arrow 21 and rotates in the forward direction, there are many in the direction indicated by the arrow 41 from the second delivery port 512 facing the blower direction of the blower fan 500. The wind is sent. Similarly, a large amount of wind is sent in the direction indicated by the arrow 42 from the second outlet 513 facing the blowing direction of the blowing fan 500 that is rotating forward. Similarly, a large amount of wind is sent in the direction indicated by the arrow 43 from the second outlet 514 facing the blowing direction of the blowing fan 500 that is rotating forward.

  On the other hand, a slight amount of wind is sent in the direction indicated by the arrow 40 from the first outlet 511 located along the blowing direction of the blowing fan 500 that is rotating forward.

  FIG. 11 is a partial side view showing a state in which air is blown to the first housing portion by a blower fan that rotates in the reverse direction during one-stage cooking. FIG. 12 is a partial cross-sectional view showing the flow of hot air during one-stage cooking.

  When heating only the first cooking space 11 during the first stage cooking, the control unit operates only the first heater 400 and rotates the blower fan 500 in the reverse direction. In the present embodiment, the control means selects one-stage cooking or two-stage cooking according to the cooking conditions input from the operation unit 220 shown in FIG. During the first stage cooking, the second heater 410 is not operating.

  As shown in FIG. 11, the gas in the first cooking space 11 sucked from the suction port 120 by the blower fan 500 rotating in the reverse direction is sent in the direction indicated by the arrow 30 and reaches the first accommodating portion 610. To do. The gas that has reached the inside of the first housing part 610 is heated by the first heater 400.

  As shown in FIG. 12, the gas heated by the first heater 400 is introduced into the first cooking space 11 from the upper first air outlet 150 and the lateral first air outlet 130 shown in FIGS. .

  Specifically, hot air is introduced in the direction indicated by the arrow 30a from the upper first blower outlet 150 toward the upper portion of the cooking object 900 placed on the net shelf 700 disposed on the first tray 300. The Further, hot air is introduced in the direction indicated by the arrow 30b from the side first air outlet 130 toward the lower part of the cooking object 900 placed on the net shelf 700.

  Thus, the heating efficiency in the first stage cooking is compared with the case where the entire gas in the heating chamber 10 is circulated and heated by circulating the gas in the first cooking space 11 during the first stage cooking. The cooking time can be shortened.

  Moreover, in the heating cooker 1 which concerns on this embodiment, since hot air is sprayed and heated to both the upper part and the lower part of the to-be-cooked object 900, the to-be-cooked object 900 can be heated uniformly in a short time. .

  FIG. 13: is a partial side view which shows the state which is blowing in the 2nd accommodating part by the ventilation fan currently forward | rotating at the time of two-step cooking. FIG. 14 is a partial cross-sectional view showing the flow of hot air during two-stage cooking.

  When heating the first cooking space 11 and the second cooking space 12 during the two-stage cooking, the control means operates the second heater 410 and rotates the blower fan 500 in the normal direction. During the two-stage cooking, the first heater 400 is basically not operating.

  As shown in FIG. 13, the gas in the first cooking space 11 sucked from the suction port 120 by the blowing fan 500 rotating in the forward direction is sent in the direction indicated by the arrows 41, 42, and 43 to be the second storage portion. Reach within 640. The gas that has reached the inside of the second storage unit 640 is heated by the second heater 410.

  As shown in FIG. 14, the gas heated by the second heater 410 is introduced into the first cooking space 11 from the second air outlet 140, and from the upper third air outlet 141 and the lower third air outlet 142. It is introduced into the second cooking space 12.

  Specifically, hot air is introduced from the second air outlet 140 toward the cooking object 900 placed on the first tray 300 in the direction indicated by the arrow 43a. Hot air introduced into the first cooking space 11 from the second air outlet 140 convects in the first cooking space 11.

  Further, hot air is introduced from the upper third blower outlet 141 toward the cooking object 900 placed on the second tray 310 in the direction indicated by the arrow 41a. Hot air introduced from the upper third outlet 141 into the upper second cooking space 12a convects in the upper second cooking space 12a.

  Further, hot air is introduced from the lower third blower outlet 142 toward the lower surface of the second tray 310 in the direction indicated by the arrow 42a. The hot air introduced from the lower third outlet 142 into the lower second cooking space 12b convects in the lower second cooking space 12b.

  As described above, during the two-stage cooking, the hot air is convected in each of the first cooking space 11, the upper second cooking space 12a, and the lower second cooking space 12b, thereby being placed on the first tray 300. Both the cooked object 900 and the cooked object 900 placed on the second tray 310 can be heated uniformly in a short time.

  The heating cooker 1 according to the present embodiment switches the rotation direction of the blower fan 500 between forward rotation and reverse rotation during the first-stage cooking and during the second-stage cooking, respectively. Heating time can be shortened. Moreover, in the heating cooker 1, since the complicated mechanism for switching the flow of hot air is not required, it can prevent that the structure of the heating cooker 1 becomes complicated.

  In addition, when the heating time in the first cooking space 11 is longer than the heating time in the second cooking space 12 during the two-stage cooking, the first heater 400 is temporarily operated as needed to blow air. By rotating the fan 500 in the reverse direction, the inside of the first cooking space 11 may be preferentially heated. In this case, the heating time in the two-stage cooking can be further shortened.

  Hereinafter, the heating cooker which concerns on Embodiment 2 of this invention is demonstrated. The heating cooker according to the present embodiment is different from the heating cooker 1 according to the first embodiment only in the shape of the fan casing, and therefore the description of the other components will not be repeated.

(Embodiment 2)
FIG. 15: is a partial side view which shows the state which the ventilation fan is reversely rotating in the heating cooker which concerns on Embodiment 2 of this invention. FIG. 16 is a partial side view showing a state in which the blower fan is rotating forward in the cooking device according to the present embodiment.

  As shown in FIGS. 15 and 16, the fan casing 710 of the heating cooker according to the present embodiment is opposed to the blowing direction when the blower fan 500 rotates in reverse, and communicates with the first accommodating portion 610. And a first delivery port 711 and a second delivery port 712 that are opposed to the blowing direction during forward rotation of the blower fan 500 and communicate with the second accommodating portion 640. The first outlet 711 and the second outlet 712 are located on the opposite sides around the blower fan 500.

  The first delivery port 711 according to the present embodiment is larger than the first delivery port 511 of the first embodiment. A part of the first outlet 711 communicates with the first housing portion 610 so as to face the blowing direction when the blower fan 500 rotates in the reverse direction. The remaining portion of the first delivery port 711 communicates with the second housing portion 640 so as to face the blowing direction when the blower fan 500 is rotating forward.

  That is, the suction port 120 communicates with the upper first air outlet 150 and the lateral first air outlet 130 through the first accommodating portion 610 through a part of the air intake portion 502 and the first outlet 711.

  The suction port 120 is connected to the second air outlet 140, the upper third air outlet 141, and the lower third air outlet 142 through the second accommodating portion 640 through the air intake portion 502 and the remaining part of the first outlet 711. Communicate. Further, the suction port 120 communicates with the second air outlet 140, the upper third air outlet 141, and the lower third air outlet 142 via the second accommodating portion 640 through the air intake portion 502 and the second delivery port 712. ing.

  As shown in FIG. 15, in a state where the blower fan 500 rotates in the direction indicated by the arrow 20 and reversely rotates, the blower 500 is indicated by the arrow 50 from a part of the first outlet 711 facing the blower direction of the blower fan 500. Many winds are sent in the direction.

  On the other hand, a slight amount of wind is sent in the direction indicated by the arrow 51 from the remaining portion of the first outlet 711 positioned along the blowing direction of the blowing fan 500 rotating in the reverse direction. Similarly, a slight amount of wind is sent in the direction indicated by the arrow 52 from the second outlet 712 positioned along the blowing direction of the blowing fan 500 rotating in the reverse direction.

  As shown in FIG. 16, in the state where the blower fan 500 rotates in the direction indicated by the arrow 21 and rotates in the forward direction, the direction indicated by the arrow 61 from the remaining portion of the first outlet 711 facing the blower direction of the blower fan 500. Many winds are sent to. Similarly, a large amount of wind is sent in the direction indicated by the arrow 62 from the second outlet 712 facing the blowing direction of the blowing fan 500 that is rotating forward.

  On the other hand, a slight amount of wind is sent in the direction indicated by the arrow 60 from a part of the first delivery port 711 located along the blowing direction of the blowing fan 500 that is rotating forward.

  In the centrifugal blower according to the present embodiment, when the blower fan 500 is rotating forward, the amount of air blown from the upper first outlet 150 and the side first outlet 130, the second outlet 140, and the upper third outlet. The difference with the air volume which blows off from the exit 141 and the lower 3rd blower outlet 142 can be enlarged. For example, the ratio of the amount of air blown from the upper first air outlet 150 and the side first air outlet 130 to the amount of air blown from the second air outlet 140, the upper third air outlet 141, and the lower third air outlet 142 is a pair. It can be set to 9. By doing in this way, the wind which flows toward the 1st heater 400 which is not operating at the time of two-step cooking can be reduced, and improvement in heating efficiency can be aimed at.

  Also in the heating cooker according to the present embodiment, by switching the rotation direction of the blower fan 500 between forward rotation and reverse rotation during the first stage cooking and the second stage cooking, each of the first stage cooking and the second stage cooking is performed. Heating time can be shortened.

  Hereinafter, the cooking device according to a modification of the present embodiment will be described. The cooking device according to this modification is different from the fan casing 710 according to the second embodiment only in the shape of the fan casing.

  FIG. 17: is a partial side view which shows the state in which the ventilation fan is rotating reversely in the heating cooker which concerns on the modification of this embodiment. FIG. 18 is a partial side view showing a state where the blower fan is rotating forward in the cooking device according to the present modification.

  As shown in FIGS. 17 and 18, the fan casing 810 of the heating cooker according to the present embodiment is opposed to the air blowing direction when the blower fan 500 rotates in reverse, and communicates with the first housing portion 610. And the remaining part of the first outlet 811 and the second outlet 812 that communicate with the second housing portion 640 in opposition to the blowing direction during the forward rotation of the blower fan 500. The first delivery port 811 and the second delivery port 812 are located on opposite sides around the blower fan 500.

  In the fan casing 810 according to the modified example, the lower edge portion 813 located at the lower portion of the edge of the first delivery port 811 is located closer to the blower fan 500 and lower than the fan casing 710 according to the second embodiment. doing. Moreover, in the fan casing 810, the upper edge part 814 located in the upper part of the edge of the 1st delivery port 811 is located upwards apart from the ventilation fan 500 compared with the fan casing 710 which concerns on Embodiment 2. FIG. Yes.

  Furthermore, in the fan casing 810, the upper edge portion 815 located at the upper part of the edge of the second delivery port 812 is located above and close to the blower fan 500 compared to the fan casing 710 according to the second embodiment. Yes.

  Since the fan casing 810 has the above-described configuration, the amount of air blown to the first housing portion 610 during the reverse rotation of the blower fan 500 is reduced compared to the centrifugal blower according to the second embodiment, and The amount of air blown to the second housing portion 640 at the time of forward rotation can be increased.

  Specifically, since the upper edge portion 814 is spaced apart from the blower fan 500 and is located above, it is sent from a part of the first outlet 811 in the direction indicated by the arrow 70 when the blower fan 500 rotates in the reverse direction. Wind decreases.

  On the other hand, since the lower edge portion 813 is positioned close to and below the blower fan 500, the wind sent in the direction indicated by the arrow 80 from the remaining portion of the first outlet 811 increases during the forward rotation of the blower fan 500. . Similarly, since the upper edge portion 815 is positioned close to and above the blower fan 500, the wind sent from the second outlet 812 in the direction indicated by the arrow 81 increases during the forward rotation of the blower fan 500.

  By changing the shape of the fan casing as in this modification, the amount of air blown during two-stage cooking can be made larger than the amount of air blown during the first-stage cooking. As a result, the cooking time during two-stage cooking can be further shortened.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1, 1a, 1b cooking device, 10 heating chamber, 11 first cooking space, 12 second cooking space, 12a upper second cooking space, 12b lower second cooking space, 100 box, 101 upper surface, 102 side surface, 103 lower surface, 104 rear surface, 110 first tray support part, 111 second tray support part, 120 suction port, 130,150 first air outlet, 140 second air outlet, 141,142 third air outlet, 200 heat insulating door, 210 Display unit, 220 Operation unit, 230 Window unit, 300 First tray, 310 Second tray, 400 First heater, 410 Second heater, 500 Blower fan, 501 blade, 502 Air intake unit, 510, 710, 810 Fan Casing, 511, 711, 811 first outlet, 512, 513, 514, 712, 812 second outlet, 600 duct , 610 1st accommodating part, 620 ventilation path, 630 Rear part cover, 640 2nd accommodating part, 700 Net shelf, 813 Lower edge part, 814, 815 Upper edge part, 900 To-be-cooked item.

Claims (5)

Box and
A heating chamber that is provided in the box and stores the food to be cooked therein;
Heating means for heating the cooking object in the heating chamber;
A centrifugal blower for introducing hot air of the heating means into the heating chamber;
Control means for controlling the heating means and the centrifugal blower,
The heating chamber has a first cooking space located in the upper part of the heating chamber, and a second cooking space located below the first cooking space,
The heating means includes a first heater for heating the first cooking space, and a second heater for heating the first cooking space and the second cooking space,
The box has a first housing part for housing the first heater, and a second housing part for housing the second heater,
The centrifugal blower includes a blower fan having an air intake portion and a fan casing surrounding the blower fan,
The box body has, on the inner surface constituting the first cooking space, a suction port that communicates with the air intake portion, a first air outlet that communicates with the suction port via the first storage portion, and the second The 3rd blower outlet which has the 2nd blower outlet connected to the said suction inlet via an accommodating part, and is connected to the said suction inlet via the said 2nd accommodating part in the inner surface which comprises the said 2nd cooking space Have
The blower fan blows air toward the front side in the rotation direction of the blower fan, and the rotation direction is switched between forward rotation and reverse rotation by the control means,
The fan casing mainly guides the wind from the blower fan to the first housing portion during reverse rotation of the blower fan, and mainly draws the wind from the blower fan during forward rotation of the blower fan. A cooking device having a shape leading to the housing.   2. The cooking device according to claim 1, wherein, when heating only the first cooking space, the control unit operates only the first heater and reversely rotates the blower fan. 3.   The heating cooker according to claim 1 or 2, wherein when the first cooking space and the second cooking space are heated, the control means operates the second heater and rotates the blower fan in the forward direction. .   The fan casing opposes the blowing direction during reverse rotation of the blower fan and communicates with the first housing portion, and faces the blowing direction during forward rotation of the blower fan. The cooking device according to any one of claims 1 to 3, further comprising a second delivery port that communicates with the two storage units. The first air outlet is located above and to the side of the first cooking space,
The second air outlet is located on a side of the first cooking space,
The cooking device according to claim 4, wherein the third blower outlet is located on a side of the second cooking space and below the second blower outlet.

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