JP2011231962A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker capable of effectively cooling a cooled component when cooking without using microwaves, by utilizing an air supply mechanism for supplying air into a heating chamber during cooking using microwaves.SOLUTION: During cooking without using microwaves, outside air supplied via an air supply passage 32 from a dilution fan 30 is guided to a defrosting sensor through a branch passage 42a communicated with the air supply passage 32 with an air inlet 33 closed by an air supply damper 40.

Description

  The present invention relates to a cooking device.

  Conventionally, as a heating cooker, there is a heating cooker provided with a fan that supplies outside air through a blower opening and a damper that opens and closes the blower opening and the discharge opening (for example, JP-A-6-94242). See Patent Document 1)). This heating cooker exhausts the gas generated in the heating chamber during microwave cooking, so that both dampers are opened and the outside air from the fan is supplied into the heating chamber through the air blowing port and heated. Exhaust indoor air from the outlet. On the other hand, in the heating cooker, each damper is closed in order to seal the heating chamber during cooking by the heater.

  In such a heating cooker, in a configuration in which outside air is supplied into the heating chamber also using a cooling fan or the like that is always operated, the wind to be supplied into the heating chamber when the damper is opened is not effectively used when the damper is closed. .

  In particular, when the cooking device having the above-described configuration is provided with a thawing sensor that detects the heating state of the heated object in the heating chamber during cooking using microwaves, heating is performed when cooking using a heater without using microwaves. Since the chamber becomes hot, the cooling structure of the thawing sensor disposed near the heating chamber becomes a problem.

JP-A-6-94242

  Therefore, an object of the present invention is to use an air supply mechanism that supplies air into a heating chamber during cooking using microwaves, and to effectively cool a component to be cooled when performing cooking without using microwaves. An object of the present invention is to provide a heating cooker that can be cooled.

In order to solve the above problems, the heating cooker of the present invention is:
A heating chamber;
A microwave generator for supplying microwaves to the heating chamber;
An air supply passage for supplying outside air into the heating chamber;
An air supply fan for supplying outside air into the heating chamber via the air supply passage;
An air supply port provided in the heating chamber and connected to one end of the air supply passage;
A component to be cooled disposed outside the heating chamber;
An air supply damper for opening and closing the air supply port;
A branch passage that communicates with the air supply passage when the air supply opening is closed by the air supply damper and guides outside air supplied from the air supply fan through the air supply passage toward the component to be cooled. It is characterized by comprising.

  According to the above configuration, when the microwave from the microwave generator is supplied into the heating chamber and the object to be heated is cooked, the supply air to which one end of the supply passage for supplying outside air into the heating chamber is connected The opening is opened by an air supply damper, and outside air is supplied to the heating chamber through an air supply passage by an air supply fan. On the other hand, when cooking without using microwaves, the air supply port is closed by the air supply damper, and the outside air supplied from the air supply fan through the air supply passage is cooled by the branch passage communicating with the air supply passage. Lead towards the part. Thus, by using an air supply mechanism that supplies air into the heating chamber during cooking using microwaves, the component to be cooled can be effectively cooled when cooking without using microwaves.

Moreover, in the heating cooker of one embodiment,
The part to be cooled is a thawing sensor that is disposed in the vicinity of the air supply damper and detects the heating state of the object to be heated in the heating chamber.

  According to the above embodiment, during cooking using microwaves, the heating state of the object to be heated in the heating chamber is detected by the thawing sensor disposed in the vicinity of the air supply damper. On the other hand, during cooking without using microwaves, the air supply opening is closed by the air supply damper, and the outside air supplied from the air supply fan through the air supply passage is defrosted by the branch passage communicating with the air supply passage. The thawing sensor that is affected by the heat from the heating chamber that becomes a high temperature can be cooled.

Moreover, in the heating cooker of one embodiment,
A control unit for controlling the microwave generator, the air supply fan, and the air supply damper;
The control unit
When the object to be heated in the heating chamber is heated by the microwave supplied from the microwave generator, the air supply fan is operated, and the air supply opening is opened by the air supply damper. on the other hand,
When heating the object to be heated in the heating chamber without using the microwave of the microwave generator, the air supply fan is operated, and the air supply opening is closed by the air supply damper. .

  According to the above embodiment, when the object to be heated in the heating chamber is heated by the microwave supplied from the microwave generator, the supply fan is operated by the control unit, and the supply port is provided by the supply damper. With the open state, it is possible to supply outside air into the heating chamber and to discharge the gas generated from the object to be heated during cooking by microwaves to the outside. On the other hand, when the object to be heated in the heating chamber is heated without using the microwave of the microwave generator, the air supply fan is operated by the control unit and the air supply port is closed by the air supply damper. By doing so, it is possible to cool the component to be cooled that is affected by the heat from the heating chamber that is at a high temperature.

Moreover, in the heating cooker of one embodiment,
The air supply damper has a damper main body that opens and closes the air supply opening, and a housing that covers the damper main body.
One end of the air supply passage is connected to the housing,
At least a part of the branch passage is provided in the housing, or one end of the branch passage is connected to the housing;
When the air supply opening is opened by the damper main body, the branch passage is closed by the damper main body, and when the air supply opening is closed by the damper main body, the air supply passage and the branch passage communicate with each other. .

  According to the above embodiment, when the air supply opening is opened by the damper main body of the air supply damper, the branch passage is closed by the damper main body, while when the air supply opening is closed by the damper main body, the air supply passage and the branch passage are As a result of the communication, a mechanism for switching the outflow path from the air supply passage can be easily realized by the air supply damper.

Moreover, in the heating cooker of one embodiment,
When the air supply opening is closed by the damper main body of the air supply damper, a guide portion is provided in the damper main body for guiding outside air flowing into the housing from the air supply passage to the branch passage.

  According to the above embodiment, when the air supply port is closed by the damper main body of the air supply damper, the guide portion provided in the damper main body guides the outside air flowing into the housing from the air supply passage to the branch passage side. The supply of outside air to the parts to be cooled can be performed smoothly.

Moreover, in the heating cooker of one embodiment,
The air supply passage is connected to the housing of the air supply damper such that the opening of the air supply passage faces downward,
The housing of the air supply damper is provided with at least a part of the branch passage from the air supply passage side downward, or the branch passage is connected so that the opening of the branch passage faces upward Has been.

  According to the above-described embodiment, the opening of the supply passage connected to the housing of the supply damper faces downward, and the opening of the branch passage provided at least partially in the housing of the supply damper is the supply passage. Since the air is directed downward from the side, the outside air from the air supply passage flows downward into the housing, and smoothly flows downward from the opening of the branch passage. Alternatively, since the branch passage is connected so that the opening of the branch passage faces upward, the outside air from the air supply passage flows downward into the housing, and smoothly flows downward from the opening of the branch passage. Flows out. As a result, the flow of outside air to the parts to be cooled becomes smoother from the top to the bottom, and the flow path loss in the air supply damper is reduced, so that the parts to be cooled are arranged below the air supply damper. Can cool the parts to be cooled more effectively.

  As is clear from the above, according to the heating cooker of the present invention, cooking is performed without using microwaves by using an air supply mechanism that supplies air into the heating chamber during cooking using microwaves. A cooking device capable of effectively cooling the parts to be cooled when performing can be realized.

FIG. 1 is a perspective view of a heating cooker according to an embodiment of the present invention as seen from the front and obliquely above. FIG. 2 is a schematic diagram of a longitudinal section viewed from the front of the heating cooker. FIG. 3 is a schematic diagram of a longitudinal section viewed from the right side of the cooking device. FIG. 4 is a control block diagram of the cooking device. FIG. 5 is a perspective view of the heating cooker with the door and the casing removed, as seen from the upper rear side of the cooking device. FIG. 6: is the perspective view seen from the front diagonal upper direction of the heating cooker in the state which removed the door and the casing. FIG. 7 is a longitudinal sectional view of a main part showing a state where the air supply damper of the cooking device is opened. FIG. 8 is a longitudinal sectional view of a main part showing a state where the air supply damper of the heating cooker is closed.

  Hereinafter, the cooking device of the present invention will be described in detail with reference to the illustrated embodiments.

  FIG. 1: has shown the front perspective view of the heating cooker of one Embodiment of this invention.

  As shown in FIG. 1, the cooking device of this embodiment has a door 2 attached to the front surface of a rectangular parallelepiped casing 1 that rotates about the lower end side. A handle 3 is attached to the upper portion of the door 2 and a heat-resistant glass 4 is attached to the approximate center of the door 2. An operation panel 5 is provided on the right side of the door 2. The operation panel 5 includes a liquid crystal display unit 6 and an operation button group 7 operated by a user. Further, an exhaust port cover 8 having an exhaust port 8a is provided on the upper side of the casing 1 and on the right rear side. Further, a dew receptacle 9 is detachably attached below the door 2 of the casing 1.

  Moreover, FIG. 2 shows the schematic diagram of the longitudinal cross section seen from the front of the said heating cooker, and FIG. 3 has shown the schematic diagram of the longitudinal cross section seen from the right side of this heating cooker.

  As shown in FIGS. 2 and 3, a water supply tank 11 detachably inserted from the front side is disposed on the right side of the heating chamber 10, and a steam generator 12 is disposed on the rear side of the water supply tank 11. Yes. The steam generator 12 is connected to the water supply tank 11 and generates steam by heating a heater (not shown). One end of the steam supply passage 13 is connected to the steam generator 12, and the other end of the steam supply passage 13 is connected to the circulation unit 14.

  Water supplied from the water supply tank 11 is heated by the steam generator 12 to generate saturated water vapor. The saturated steam generated by the steam generator 12 is supplied from the steam supply port 13 a to the downstream side of the suction port 28 in the circulation unit 14 through the steam supply passage 13.

  The steam supply port 13 a of the steam supply passage 13 is disposed in the vicinity of the suction port 28 in the circulation unit 14. A circulation fan 18 is disposed in the circulation unit 14 so as to face the suction port 28. The circulation fan 18 is driven by a circulation fan motor 19.

  A steam duct 100 bent in an L shape is attached so as to cover the upper surface and the left side surface of the heating chamber 10. The steam duct 100 includes a first duct portion 110 fixed to the upper surface side of the heating chamber 10, a bent portion 120 bent from the left side to the lower side of the first duct portion 110, and a left side surface side of the heating chamber 10. A second duct portion 130 that is fixed and is continuous with the first duct portion 110 via the bent portion 120 is provided.

  A heater 21 composed of a sheathed heater or the like is accommodated in the first duct portion 110 of the steam duct 100. The first duct portion 110 of the steam duct 100 and the heater 21 constitute a superheated steam generator. Note that the superheated steam generator may be provided separately from the steam duct.

  The right side of the first duct portion 110 of the steam duct 100 communicates with a steam supply port 14 a provided in the upper part of the circulation unit 14. A plurality of first steam outlets 24 are provided on the top surface of the heating chamber 10, and the first duct portion 110 of the steam duct 100 communicates with the inside of the heating chamber 10 via the first steam outlet 24. ing. On the other hand, the second duct portion 130 of the steam duct 100 communicates with the inside of the heating chamber 10 via a plurality of second steam outlets 25 provided on the left side surface of the heating chamber 10.

  A gap between the heating chamber 10 and the steam duct 100 is sealed with a heat resistant resin or the like. The heating chamber 10 and the steam duct 100 are covered with a heat insulating material except for the front opening of the heating chamber 10.

  The circulation path of the heat medium is formed by the circulation unit 14, the steam duct 100, the heating chamber 10, and the connecting member that connects them. Then, saturated steam generated by the steam generator 12 is supplied to the boundary portion of the circulation unit 14 in the circulation path with the heating chamber 10.

  Here, the heating medium may be heated air, may be heated air containing water vapor, may be air containing superheated steam heated to 100 ° C. or higher, and The main component may be superheated steam heated to 100 ° C. or higher.

  In addition, a magnetron 20 (shown in FIG. 3) as an example of a microwave generator is disposed below the heating chamber 10. The microwave generated in the magnetron 20 is guided to the lower center of the heating chamber 10 by a waveguide (not shown), and radiates upward in the heating chamber 10 while being stirred by a rotating antenna (not shown). Then, the object to be heated 23 is heated. In this case, the object to be heated 23 is placed on the bottom of the heating chamber 10.

  In addition, a suction port 28 is provided at the center of the right side wall of the heating chamber 10, an air supply port 33 (shown in FIG. 6) is provided on the front side of the suction port 28 on the right side wall of the heating chamber 10, and the suction port 28 is provided. A first exhaust port 36 is provided on the rear side. The air supply port 33 is arranged in the vicinity of the door 2, and the outside air blown from the air supply port 33 flows into the heating chamber 10 along the door 2. A second exhaust port 37 having an opening area smaller than that of the first exhaust port 36 is provided on the lower right side of the rear side wall surface of the heating chamber 10.

  A circulation fan motor 19 for driving the circulation fan 18 is attached to the circulation unit 14 disposed on the right side surface of the heating chamber 10. Steam and air in the heating chamber 10 are sucked from the suction port 28 by the circulation fan 18 and blown out from the first and second steam outlets 24 and 25 into the heating chamber 10 through the steam duct 100. Further, in the vicinity of the suction port 28 of the circulation unit 14, an internal temperature sensor 29 that detects the temperature of the heat medium (air containing steam) in the heating chamber 10 is disposed.

  The object to be heated 23 in the heating chamber 10 is heated by the radiant heat of the heater 21 disposed in the first duct portion 110 of the steam duct 100. Further, the heating medium (air containing steam) passing through the steam duct 100 is heated by the heater 21, and the heated heating medium is blown out from the first and second steam outlets 24 and 25. Thereby, the heat medium in the heating chamber 10 is maintained at a predetermined temperature. Further, the steam supplied to the heating chamber 10 can be further heated by the heater 21 to generate superheated steam at 100 ° C. or higher.

  On the lower side in the casing 1, a cooling fan unit 22, an electrical component 17, and a magnetron 20 are arranged. A blower duct 31 is disposed on the right side of the heating chamber 10 in the casing 1. A dilution fan 30 as an example of an air supply fan and a dilution fan motor 38 that drives the dilution fan 30 are housed in the air duct 31. The cooling fan unit 22 includes a cooling fan 15 and a cooling fan motor 16 that drives the cooling fan 15.

  The electrical component 17 includes a drive circuit that drives each part of the cooking device, a control circuit that controls the drive circuit, and the like. The cooling fan 15 takes outside air into the casing 1 and cools the electrical component 17 and the magnetron 20 that generate heat. A part of the outside air that has flowed into the casing 1 by the cooling fan 15 is guided into the blower duct 31 by the dilution fan 30, and the remaining outside air is an opening (not shown) formed in the back surface of the casing 1. ) To the outside.

  As shown in FIG. 3, the 1st exhaust duct 34 connected to the right side wall of the heating chamber 10 from the 1st exhaust port 36 via the exhaust damper (not shown) is arrange | positioned. The first exhaust duct 34 has a lateral passage 34a extending in the lateral direction and a longitudinal passage 34b bent upward from the lateral passage 34a. An exhaust port cover 8 is detachably attached to the upper end of the vertical passage 34b.

  A suction port (not shown) for sucking outside air through the suction duct 27 is provided on the back side of the lateral passage 34 a of the first exhaust duct 34. The exhaust damper is controlled so that either one of the suction port or the first exhaust port 36 is alternatively selected and connected to the first exhaust duct 34. The exhaust damper is driven by an exhaust damper motor 60 (shown in FIG. 4).

  The vertical passage 34 b of the first exhaust duct 34 is connected to the exhaust port cover 8 with the flow passage area being enlarged upward. The exhaust port cover 8 is formed with an exhaust port 8a having an open end opened forward.

  On the other hand, the lower end of the second exhaust duct 35 is connected to the second exhaust port 37, and the upper end of the second exhaust duct 35 is connected to the lower side of the vertical passage 34 b of the first exhaust duct 34.

  The second exhaust duct 35 has a smaller flow area than the first exhaust duct 34. The exhaust from the second exhaust port 37 flows into the first exhaust duct 34 via the second exhaust duct 35 and is discharged to the outside from the exhaust port 8 a of the exhaust port cover 8.

  Further, the air duct 31 on the side of the heating chamber 10 includes a dilution fan housing portion 31a, a vertical passage 31b extending upward from the dilution fan 30, a horizontal passage 31c bent from the vertical passage 31b to the rear side, and a horizontal passage. The nozzle portion 31d is bent upward from 31c. The lateral passage 31c and the nozzle portion 31d are inserted into the first exhaust duct 34.

  An opening 31 e is provided at the upper end of the nozzle portion 31 d of the air duct 31. Thus, an ejector is formed in the first exhaust duct 34, and the dilution fan 30 generates an air flow from the first exhaust port 36 toward the exhaust port 8a.

  Further, a concave portion is formed in the horizontal passage 31c of the blower duct 31 so as to be recessed below the lower end of the connection portion with the vertical passage 31b, and a sub nozzle portion that opens into the first exhaust duct 34 at one end of the concave portion. 31f is formed.

  Further, one end of the air supply passage 32 is connected to the upper portion of the vertical passage 31 b of the air duct 31, and the other end of the air supply passage 32 is connected to the air supply damper 40. The air supply passage 32 and the air supply damper 40 are part of an air supply mechanism for supplying air to the heating chamber 10 through the air supply port 33 by the dilution fan 30. A thawing sensor 50 as an example of a part to be cooled is disposed near and below the air supply port 33 of the heating chamber 10.

  FIG. 4 shows a control block diagram of the heating cooker. The cooking device includes a control unit 200 including a microcomputer and an input / output circuit in the electrical component unit 17 (shown in FIGS. 2 and 3). The control unit 200 includes the heater 21, the circulation fan motor 19, the cooling fan motor 16, the dilution fan motor 38, the supply damper motor 44, the exhaust damper motor 60, the operation panel 5, the internal temperature sensor 29, The thawing sensor 50, the feed water pump 70, the steam generator 12 and the magnetron 20 are connected. Based on the signal from the operation panel 5 and the detection signals from the internal temperature sensor 29 and the thawing sensor 50, the control unit 200 controls the heater 21, the circulation fan motor 19, the cooling fan motor 16, and the dilution fan motor 38. , Controls the supply damper motor 44, the exhaust damper motor 60, the operation panel 5, the feed water pump 70, the steam generator 12, the magnetron 20, and the like.

  FIG. 5 shows a perspective view of the heating cooker with the door 2 and the casing 1 removed, as seen from diagonally above the rear surface, and FIG. 6 shows the diagonally upper front of the cooking device with the door 2 and the casing 1 removed. The perspective view seen from is shown.

  5 and 6, 26 is a front panel, 26a is an insertion port for inserting a water supply tank 11 (shown in FIG. 3), 51a and 51b are upper tray receiving portions, and 52a, 52b and 52c are middle tray receiving portions. , 53 are lower tray receiving portions. The sensor unit 50a of the thawing sensor 50 is disposed between the middle tray receiving units 52a and 52b.

  FIG. 7 shows a longitudinal section of the main part with the air supply damper 40 opened, and FIG. 8 shows a longitudinal section of the main part with the air supply damper 40 closed.

  As shown in FIGS. 7 and 8, the air supply damper 40 includes a heat resistant resin damper body 41 for opening and closing the air supply port 33, and a heat resistant resin housing 42 covering the damper main body 41. ing. One end of the air supply passage 32 is connected to the housing 42, and a branch passage 42 a is provided in the housing 42. When the air supply port 33 is opened by the damper main body 41, the branch passage 42a is closed by the damper main body 41, while when the air supply port 33 is closed by the damper main body 41, the air supply passage 32 and the branch passage 42a communicate with each other. .

  An annular packing 46 is fitted into the opening 42c on the air supply port 33 side of the housing 42 of the air supply damper 40. Thereby, the airtightness of the air supply port 33 and the air supply damper 40 is maintained.

  Further, the damper main body 41 is rotatably supported by the housing 42 by a shaft portion 41 a provided at the lower end of the damper main body 41. Further, the housing 42 and the damper main body 41 are connected via a spring 43, and the damper 53 is urged by the spring 53 in the opening direction. An air supply damper motor 44 is attached in the vicinity of the damper main body 41 of the housing 42. A cam surface 45 a of a cam 45 driven by the supply damper motor 44 is in contact with the back surface of the damper main body 41.

  An air supply passage 32 is connected to an inflow portion 42 b formed in the upper portion of the housing 42 of the air supply damper 40. The inflow portion 42b is inclined so that the opening faces downward, and airflow is blown out from the air supply port 33 toward the door 2 (shown in FIG. 3) via the inflow portion 42b. The branch passage 42a of the housing 42 is provided downward from the inflow portion 42b side.

  The damper main body 41 is pressed by the cam 45 by the supply damper motor 44, and the damper main body 41 comes into close contact with the packing 46 against the urging force of the spring 43. As a result, the damper main body 41 is kept closed by the pressing of the cam 45. At this time, the branch passage 42a is opened. The airflow flowing into the air supply damper 40 through the air supply passage 32 by driving the dilution fan 30 is blown out toward the thawing sensor 50 through the branch passage 42a.

  Further, as shown in FIG. 8, when the cam 45 rotates in a direction in which the cam surface 45 a is separated from the damper main body 41, the damper main body 41 is opened by the urging force of the spring 43. The damper main body 41 is kept in contact with a part of the housing 42 and opened. At this time, the branch passage 42a is closed. Thus, the airflow that has flowed into the supply damper 40 through the supply passage 32 by the dilution fan 30 is supplied from the supply port 33 into the heating chamber 10.

  In the cooking device configured as described above, when cooking by microwaves is started, the magnetron 20 is driven by the control unit 200, the air supply port 33 is opened by the damper main body 41, and the first exhaust port 36 is opened by the exhaust damper. Then, the cooling fan 15 and the dilution fan 30 are driven. Then, a microwave is supplied into the heating chamber 10 via the waveguide by the magnetron 20, and the object to be heated is heated by the microwave.

  The outside air guided to the supply damper 40 by the dilution fan 30 through the air duct 30 and the supply passage 32 is supplied into the heating chamber 10 from the supply port 33. At this time, the airflow blown from the air supply port 33 near the door 2 flows along the door 2 in the heating chamber 10. Further, the dilution fan 30 supplies outside air to the first exhaust duct 34 via the nozzle portion 31d and the sub nozzle portion 31f of the air duct 31.

  In this way, the air in the heating chamber 10 is discharged to the outside from the first exhaust port 36 and the second exhaust port 37. Exhaust gas from the second exhaust port 37 is guided to the first exhaust duct 34 via the second exhaust duct 35.

  According to the heating cooker having the above-described configuration, when the microwave is supplied from the magnetron 20 into the heating chamber 10 to cook the object to be heated, the supply passage 32 for supplying outside air into the heating chamber 10 is provided. The air supply port 33 connected at one end is opened by the air supply damper 40, and the outside air is supplied to the heating chamber 10 by the dilution fan 30 through the air supply passage 32. On the other hand, at the time of cooking without using microwaves, the supply port 33 is closed by the supply damper 40 and supplied from the dilution fan 30 through the supply passage 32 by the branch passage 42 a communicating with the supply passage 32. The outside air is guided toward the thawing sensor 50. Accordingly, a defrosting sensor is used when cooking is performed by sealing the heating chamber 10 without using a microwave by using an air supply mechanism that supplies air into the heating chamber 10 during cooking using microwaves. 50 can be cooled effectively.

  In addition, during cooking using microwaves, the heating state of the object to be heated 23 in the heating chamber 10 is detected by the thawing sensor 50 disposed in the vicinity of the air supply damper 40. On the other hand, at the time of cooking without using microwaves, the supply port 33 is closed by the supply damper 40 and supplied from the dilution fan 30 through the supply passage 32 by the branch passage 42 a communicating with the supply passage 32. When the outside air is guided toward the thawing sensor 50, the thawing sensor 50 affected by the heat from the heating chamber 10 that becomes high temperature can be cooled.

  Further, when the object to be heated 23 in the heating chamber 10 is heated by the microwave supplied from the magnetron 20, the dilution fan 30 is operated by the control unit 200, and the air supply port 33 is opened by the air supply damper 40. By making it open, it is possible to supply outside air into the heating chamber 10 and discharge the gas generated from the object to be heated during cooking by microwaves to the outside.

  On the other hand, when the object to be heated 23 in the heating chamber 10 is heated without using the microwave of the magnetron 20, the dilution fan 30 is operated by the control unit 200 and the supply port 33 is opened by the supply damper 40. By making it the closed state, the thawing sensor 50 that is affected by the heat from the heating chamber 10 that becomes high temperature can be cooled.

  Further, when the air supply port 33 is opened by the damper main body 41 of the air supply damper 40, the branch passage 42 a is closed by the damper main body 41, while when the air supply port 33 is closed by the damper main body 41, By connecting the branch passage 42a, a mechanism for switching the outflow path from the air supply passage 32 can be easily realized by the air supply damper 40.

  Further, when the air supply port 33 is closed by the damper main body 41 of the air supply damper 40, the guide air 41b provided in the damper main body 41 guides the outside air flowing into the housing 42 from the air supply passage 32 to the branch passage 42a side. Therefore, the supply of outside air to the thawing sensor 50 can be performed smoothly.

  Further, the opening of the air supply passage 32 connected to the housing 42 of the air supply damper 40 faces downward, and the opening of the branch passage 42a provided in the housing 42 of the air supply damper 40 extends from the air supply passage 32 side. Since it is directed upward, the outside air from the air supply passage 32 flows downward into the housing 42 and smoothly flows downward from the opening of the branch passage 42a. As a result, the flow of outside air to the thawing sensor 50 becomes smoother from the upper side to the lower side, and the flow path loss in the air supply damper 40 is reduced. Therefore, the thawing sensor disposed below the air supply damper 40. 50 can be cooled more effectively.

  A branch passage may be separately connected to the housing of the air supply damper so that the opening of the branch passage faces upward. Also in this case, the outside air from the air supply passage flows downward into the housing, and smoothly flows downward from the opening of the branch passage.

  In the heating cooker, since the air supply during cooking by microwave is intended to exhaust the gas in the heating chamber 10, the second exhaust port located on the rear side wall and the lower right side in the heating chamber 10 The air supply port 33 and the air supply damper 40 are arranged on the front side and the upper side of the right side wall which is diagonal to the position 37, so that intake and exhaust are efficiently performed. In the vicinity of the air supply damper 40 arranged at such a position, a thawing sensor 50 for detecting the microwave from the bottom where the object to be heated in the heating chamber 10 is placed at the time of cooking using microwaves is arranged. Is suitable.

  In the above embodiment, the thawing sensor 50 is disposed on the right side surface of the heating chamber 10, but the position of the thawing sensor is not limited thereto, and may be disposed on the top surface side of the heating chamber. In that case, the branch passage is extended from the air supply damper to the thawing sensor.

  In the above embodiment, the thawing sensor 50 is cooled as a component to be cooled. However, not only the thawing sensor but also other components such as lamps and circuit boards that need to be cooled may be cooled, including the thawing sensor. A plurality of parts to be cooled may be cooled.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Casing 2 ... Door 3 ... Handle 4 ... Heat-resistant glass 5 ... Operation panel 6 ... Liquid crystal display part 7 ... Operation button group 8 ... Exhaust port cover 8a ... Exhaust port 9 ... Dew receptacle 10 ... Heating chamber 11 ... Water supply tank 12 DESCRIPTION OF SYMBOLS ... Steam generator 13 ... Steam supply passage 13a ... Steam supply port 14 ... Circulation unit 14a ... Steam supply port 15 ... Cooling fan 16 ... Motor for cooling fan 17 ... Electrical component part 18 ... Circulation fan 19 ... Motor for circulation fan 20 ... Magnetron 21 ... Heating heater 22 ... Tray 23 ... Object to be heated 24 ... First steam outlet 25 ... Second steam outlet 26 ... Front panel 27 ... Suction duct 28 ... Suction port 29 ... Inside temperature sensor 30 ... Dilution fan 31 Air blow duct 32 Air supply passage 33 Air supply port 34 First exhaust duct 35 Second exhaust duct 36 First exhaust port 37 Second exhaust port 38 Noble Motor 40 ... air supply damper 41 ... damper body 41a ... shaft part 41b ... guide part 42 ... housing 42a ... branch passage 42b ... inflow part 50 ... thawing sensor 51a, 51b ... upper tray receiving part 52a, 52b, 52c ... Middle tray receiving part 53 ... Lower tray receiving part 60 ... Motor for exhaust damper 70 ... Water supply pump 100 ... Steam duct 110 ... First duct part 120 ... Bending part 130 ... Second duct part 200 ... Control part

Claims (6)

A heating chamber;
A microwave generator for supplying microwaves to the heating chamber;
An air supply passage for supplying outside air into the heating chamber;
An air supply fan for supplying outside air into the heating chamber via the air supply passage;
An air supply port provided in the heating chamber and connected to one end of the air supply passage;
A component to be cooled disposed outside the heating chamber;
An air supply damper for opening and closing the air supply port;
A branch passage that communicates with the air supply passage when the air supply opening is closed by the air supply damper and guides outside air supplied from the air supply fan through the air supply passage toward the component to be cooled. A cooking device characterized by comprising: The heating cooker according to claim 1, wherein
The cooking device according to claim 1, wherein the component to be cooled is a thawing sensor that is disposed in the vicinity of the air supply damper and detects a heating state of a heated object in the heating chamber. The heating cooker according to claim 1 or 2,
A control unit for controlling the microwave generator, the air supply fan, and the air supply damper;
The control unit
When the object to be heated in the heating chamber is heated by the microwave supplied from the microwave generator, the air supply fan is operated, and the air supply opening is opened by the air supply damper. on the other hand,
When heating the object to be heated in the heating chamber without using the microwave of the microwave generator, the air supply fan is operated, and the air supply opening is closed by the air supply damper. A cooking device characterized by that. In the heating cooker according to any one of claims 1 to 3,
The air supply damper has a damper main body that opens and closes the air supply opening, and a housing that covers the damper main body.
One end of the air supply passage is connected to the housing,
At least a part of the branch passage is provided in the housing, or one end of the branch passage is connected to the housing;
When the air supply opening is opened by the damper main body, the branch passage is closed by the damper main body, and when the air supply opening is closed by the damper main body, the air supply passage and the branch passage communicate with each other. A cooking device characterized by that. The cooking device according to claim 4, wherein
When the air supply opening is closed by the damper main body of the air supply damper, a guide portion is provided in the damper main body for guiding the outside air flowing into the housing from the air supply passage to the branch passage side. A heating cooker. In the heating cooker according to claim 4 or 5,
The air supply passage is connected to the housing of the air supply damper such that the opening of the air supply passage faces downward,
The housing of the air supply damper is provided with at least a part of the branch passage from the air supply passage side downward, or the branch passage is connected so that the opening of the branch passage faces upward A cooking device characterized by being made.

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