JP2016114261A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker capable of cooling a motor for a circulation fan and an infrared sensor efficiently, and capable of preventing deterioration and breakage of the motor for a circulation fan and the infrared sensor.SOLUTION: A heating cooker includes: an air supply passage 101 for guiding outside air supplied from an air supply fan 54 to a heating chamber 2; a first cooling passage 102 for guiding the outside air supplied from the air supply fan 54 toward a motor 56 for a circulation fan; a second cooling passage for opening toward an infrared sensor; and switching mechanisms 51, 52 for switching between a first switching mode for supplying the outside air supplied from the air supply fan 54 to the heating chamber 2 via the air supply passage 101 and a second switching mode for supplying the outside air supplied from the air supply fan 54 to the motor 56 for a circulation fan via the first cooling passage 102, and for supplying it to the infrared sensor via the second cooling passage.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a cooking device.

  Conventionally, as a heating cooker, equipped with a plurality of infrared sensors for detecting the temperature of a plurality of measurement points on the surface of a dish on which a heated object in a heating chamber is mounted, the infrared sensor is disposed on the side of the heating chamber, There is one that swings a plurality of measurement points arranged in series in a fan shape (see, for example, Japanese Patent Application Laid-Open No. 2011-174841 (Patent Document 1)).

JP 2011-174841 A

  In the above cooking device, since the infrared sensor is arranged on the side surface of the heating chamber, the temperature of the infrared sensor rises when the heater is heated, and the detection accuracy is lowered, or the infrared sensor itself is deteriorated or damaged. There is a possibility.

  In addition, in a cooking device that heats an object to be heated in a heating chamber with a heater, in a configuration including a circulation fan for circulating the gas in the heating chamber, a circulation fan motor that drives the circulation fan is disposed near the heating chamber. Therefore, when the heater is heated, the temperature of the circulation fan motor rises and may be deteriorated or damaged.

  Then, the subject of this invention is providing the heating cooker which can cool a circulating fan motor and an infrared sensor efficiently, and can prevent deterioration and damage to the circulating fan motor and an infrared sensor.

In order to solve the above problems, the heating cooker of the present invention is:
A body casing;
A heating chamber disposed in the main body casing;
A circulation fan for circulating the gas in the heating chamber;
An air supply fan for supplying outside air into the heating chamber;
An air supply passage for guiding outside air supplied from the air supply fan into the heating chamber;
A first cooling passage that guides outside air supplied from the supply fan toward a circulation fan motor that drives the circulation fan;
An infrared sensor disposed in the vicinity of the heating chamber for detecting the temperature in the heating chamber;
A second cooling passage provided downstream of the air supply passage and opening toward the infrared sensor;
The first switching mode in which the outside air supplied from the air supply fan is supplied to the heating chamber through the air supply passage, or the outside air supplied from the air supply fan is supplied to the heating chamber through the first cooling passage. A switching mechanism for switching to a second switching mode for supplying the circulating fan motor and supplying to the infrared sensor via the second cooling passage;
The circulation fan, the air supply fan, and a control device for controlling the switching mechanism are provided.

Moreover, in the heating cooker of one embodiment,
The switching mechanism is
An air supply port opening / closing portion that opens and closes an air supply port provided at a downstream end of the air supply passage, and a cooling passage opening / closing portion that opens and closes the first cooling passage,
The control device
In the first switching mode, the air inlet opening is opened by the air inlet opening / closing portion and the first cooling passage is closed by the cooling passage opening / closing portion, while the air inlet opening / closing portion is closed in the second switching mode. By closing the air supply port, the second cooling passage is opened and the first cooling passage is opened by the cooling passage opening / closing section.

Moreover, in the heating cooker of one embodiment,
The switching mechanism is
The air supply opening / closing part is opened to a preset opening, and the cooling passage opening / closing part is opened to a preset opening so that the outside air supplied from the air supply fan is It is possible to switch to the third switching mode for allowing the flow through the first cooling passage and the second cooling passage.

Moreover, in the heating cooker of one embodiment,
An infrared sensor motor for rotating the infrared sensor;
The infrared sensor and the infrared sensor motor are linearly arranged in the order of the infrared sensor and the infrared sensor motor from the upstream side along the flow path through which the outside air from the second cooling passage flows.

Moreover, in the heating cooker of one embodiment,
A cylindrical housing disposed in the main body casing;
A sensor holding part that is rotatably supported in the cylindrical housing and holds the infrared sensor;
The sensor holding unit is driven by the infrared sensor motor,
The center axis of the infrared sensor motor is offset with respect to the center axis of the cylindrical housing.

The cooking device of this invention is
A body casing;
A heating chamber disposed in the main body casing;
A circulation fan for circulating the gas in the heating chamber;
An infrared sensor that is disposed on the upper side of the main body casing and detects the temperature in the heating chamber;
A circulation fan motor for driving the circulation fan and a cooling fan for supplying outside air to the infrared sensor;
And a cooling passage for guiding outside air supplied from the cooling fan toward the circulation fan motor and the infrared sensor.

  As is clear from the above, according to the present invention, it is possible to efficiently cool the circulation fan motor and the infrared sensor, and it is possible to realize a heating cooker that can prevent deterioration and breakage of the circulation fan motor and the infrared sensor.

FIG. 1 is a schematic front view of the heating cooker according to the first embodiment of the present invention when the door is closed. FIG. 2 is a schematic front view of the heating cooker when the door is opened. FIG. 3 is a schematic diagram for explaining the configuration of the main part of the cooking device. FIG. 4A is a schematic diagram for explaining a configuration of a main part including an air supply unit of the heating cooker. FIG. 4B is a schematic diagram when the air supply damper of the air supply unit is in a closed state. FIG. 5A is a schematic diagram for explaining the operation of the infrared sensor of the cooking device. Drawing 5B is a mimetic diagram for explaining operation of an infrared sensor of the above-mentioned cooking-by-heating machine. FIG. 5C is a schematic diagram for explaining the operation of the infrared sensor of the cooking device. Drawing 5D is a mimetic diagram for explaining operation of an infrared sensor of the above-mentioned cooking-by-heating machine. FIG. 6 is a schematic diagram for explaining the configuration of the main part including the exhaust unit of the heating cooker. FIG. 7 is a control block diagram of the cooking device. FIG. 8 is a perspective view of a state where a part of the main casing of the heating cooker is removed. FIG. 9 is a perspective view of the air supply unit as viewed obliquely from above. FIG. 10 is a perspective view of the first switching mode state in which a part of the air supply unit of the heating cooker is removed. FIG. 11 is a perspective view of the second switching mode state in which a part of the air supply unit of the cooking device is removed. FIG. 12 is a perspective view of a state where a part of the air supply unit of the cooking device is removed. FIG. 13 is a view of the air supply unit as viewed from the back side. 14 is a cross-sectional view of the air supply damper in the closed state and the cooling damper in the open state as viewed from XIV-XIV in FIG. 15 is a cross-sectional view of the air supply damper opened and the cooling damper closed as viewed from XIV-XIV in FIG. FIG. 16 is a side view of the air supply unit. 17 is a cross-sectional view of the air supply damper in the closed state and the cooling damper in the open state as viewed from XVII-XVII in FIG. 18 is a cross-sectional view of the air supply damper as viewed from XVIII-XVIII in FIG. 19 is a cross-sectional view of the air supply damper opened and the cooling damper closed as viewed from XVII-XVII in FIG. FIG. 20 is a cross-sectional view of the air supply damper when viewed from XVIII-XVIII in FIG.

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

[First Embodiment]
FIG. 1: shows the schematic front view at the time of door closing of the heating cooker of 1st Embodiment of this invention, FIG. 2 has shown the schematic front view at the time of the door opening of the said heating cooker.

  As shown in FIGS. 1 and 2, the heating cooker according to the first embodiment includes a rectangular parallelepiped main body casing 1, a heating chamber 2 provided in the main body casing 1, and having an opening 2a on the front side. And a door 3 for opening and closing the opening 2a of the heating chamber 2.

  An exhaust duct 5 having an outlet 5 a is provided on the upper side and the rear side of the main body casing 1. A dew receptacle 6 is detachably attached to the lower part of the front surface of the main casing 1. The dew receptacle 6 is located below the door 3 and can receive water droplets from the rear surface of the door 3 (surface on the heating chamber 2 side) and the front plate 55 of the main casing 1. A water supply tank 26 is also detachably attached to the lower part of the front surface of the main casing 1.

  The door 3 is attached to the front side of the main casing 1 so as to be rotatable about the lower side as an axis. A transparent outer glass 7 having heat resistance is provided on the front surface of the door 3 (the surface opposite to the heating chamber 2). The door 3 has a handle 8 positioned above the outer glass 7 and an operation panel 9 provided on the right side of the outer glass 7.

  The operation panel 9 has a color liquid crystal display unit 10 and a button group 11. The button group 11 includes a cancel key 12 that is pressed when heating is stopped halfway, and a start key 13 that is pressed when heating is started. The operation panel 9 is provided with an infrared light receiving unit 14 that receives infrared rays from a smartphone or the like.

  An object to be heated 15 is accommodated in the heating chamber 2. In addition, metal cooking trays 91 and 92 (shown in FIG. 3) can be taken in and out of the heating chamber 2. Upper shelf receivers 16 </ b> A and 16 </ b> B that support the cooking tray 91 are provided on the inner surfaces of the left side portion 2 b and the right side portion 2 c of the heating chamber 2. Moreover, lower shelf receivers 17A and 17B for supporting the cooking tray 92 are provided on the inner surfaces of the right side portion 2c and the left side portion 2b of the heating chamber 2 so as to be positioned below the upper shelf receivers 16A and 16B. .

  Drawing 3 is a mimetic diagram for explaining the composition of the principal part of the above-mentioned cooking-by-heating machine. In this FIG. 3, the state which looked at the heating chamber 2 from the left side is shown. In FIG. 3, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals.

  The heating cooker includes a circulation duct 18, a circulation fan 19, an upper heater 20, an intermediate heater 21, a lower heater 22, a circulation damper 23, a tube pump 25, a water supply tank 26, and a steam generator 70. I have. Each of the upper heater 20, the middle heater 21, and the lower heater 22 is composed of, for example, a sheathed heater. The tube pump 25 is an example of a pump and may be any pump that can switch between a water supply operation and a water discharge operation depending on the driving direction.

  The upper portion 2e of the heating chamber 2 is connected to the rear portion 2d of the heating chamber 2 through an inclined portion 2f that is inclined with respect to the horizontal direction. The inclined portion 2f is provided with a plurality of suction ports 27 so as to face the circulation fan 19 (see FIG. 2). A plurality of upper air outlets 28 are provided in the upper part 2 e of the heating chamber 2. A plurality of first rear outlets 29, second rear outlets 30 and third rear outlets 31 are provided in the rear part 2d of the heating chamber 2 (see FIG. 2). In FIG. 3, only one of the plurality of suction ports 27 is shown. Further, in FIG. 3, only one each of the first rear outlet 29, the second rear outlet 30, and the third rear outlet 31 is shown.

  The circulation duct 18 communicates with the inside of the heating chamber 2 through the suction port 27, the upper outlet 28, and the first to third rear outlets 29-31. The circulation duct 18 is provided from the upper side to the rear side of the heating chamber 2 and extends so as to exhibit an inverted L shape. The width of the circulation duct 18 in the left-right direction is set to be narrower than the width of the heating chamber 2 in the left-right direction.

  The circulation fan 19 is a centrifugal fan and is driven by a circulation fan motor 56. When the circulation fan motor 56 drives the circulation fan 19, air and saturated steam (hereinafter referred to as “air”) in the heating chamber 2 are sucked into the circulation duct 18 from the plurality of suction ports 27 and circulated. Blows out radially outward of the fan 19. More specifically, on the upper side of the circulation fan 19, air or the like flows obliquely upward from the circulation fan 19 and then flows from the rear toward the front. On the other hand, below the circulation fan 19, air or the like flows obliquely downward from the circulation fan 19 and then flows downward from above. The air is an example of a heat medium.

  The upper heater 20 is disposed in the circulation duct 18 and faces the upper part 2 e of the heating chamber 2. The upper heater 20 heats air flowing to the upper outlet 28.

  The middle heater 21 is formed in an annular shape and surrounds the circulation fan 19. The middle heater 21 heats air or the like from the circulation fan 19 toward the upper heater 20 or heats air or the like from the circulation fan 19 toward the lower heater 22.

  The lower heater 22 is disposed in the circulation duct 18 and faces the rear portion 2d of the heating chamber 2. The lower heater 22 heats air flowing to the second and third rear outlets 30 and 31.

  The circulation damper 23 is rotatably provided in the circulation duct 18 and between the middle heater 21 and the lower heater 22. The circulation damper 23 is rotated by a circulation damper motor 59 (shown in FIG. 7).

  Further, the steam generator 70 includes a metal steam generating container 71 having an upper opening, a lid portion 72 made of a heat resistant resin (for example, PPS (polyphenylene sulfide) resin) covering the upper opening of the steam generating container 71, and And a steam generating heater 73 formed of a sheathed heater cast into the bottom 71a of the steam generating container 71. Water from the water supply tank 26 accumulates on the bottom 71a of the steam generation container 71, and a steam generation heater 73 as an example of a heat source heats the water through the steam generation container 71. The saturated steam generated by heating by the steam generating heater 73 flows through the resin steam tube 35 and the metal steam pipe 36 and is supplied into the heating chamber 2 through the plurality of steam supply ports 37. (See FIG. 2). In FIG. 3, only one of the plurality of steam supply ports 37 is shown.

  The saturated steam in the heating chamber 2 is sent to the upper heater 20, the middle heater 21, and the lower heater 22 by the circulation fan 19, and heated by the upper heater 20, the middle heater 21, and the lower heater 22, thereby being 100 ° C. It becomes the above superheated steam.

  A water level sensor 75 comprising a pair of electrode rods 75a and 75b is attached to the lid portion 72. Based on whether or not the electrode rods 75a and 75b are in a conductive state, it is determined whether or not the water level on the bottom 71a of the steam generating container 71 has reached a predetermined water level.

  The tube pump 25 squeezes the elastically deformable water supply / drainage tube 40 made of silicon rubber or the like with a roller (not shown), and causes the water in the water supply tank 26 to flow to the steam generator 70 depending on the driving direction of the roller. Or the water in the steam generator 70 is caused to flow into the water supply tank 26. The water supply / drainage tube 40 is an example of a water supply path.

  The water supply tank 26 has a water supply tank main body 41 and a communication pipe 42. One end of the communication pipe 42 is located in the water supply tank body 41, while the other end of the communication pipe 42 is located outside the water supply tank 26. When the water supply tank 26 is accommodated in the tank cover 43, the other end of the communication pipe 42 is connected to the water supply / drainage tube 40 via the tank joint 44. That is, the inside of the water supply tank main body 41 communicates with the inside of the steam generator 70 via the communication pipe 42 and the like.

  The tube pump 25, the water supply tank 26, the water supply / drainage tube 40, the tank cover 43, and the tank joint portion 44 constitute a water supply device.

  4A and 4B are schematic views for explaining the configuration including the air supply unit 100 of the cooking device. 4A and 4B also show a state in which the heating chamber 2 is viewed from the right side, as in FIG. 4A and 4B, the same reference numerals are given to the same components as those in FIG.

  In addition, a plurality of air supply openings 50 that are opened and closed by an air supply damper 51 are provided in the inclined portion 2f of the heating chamber 2 (see FIG. 2). The plurality of air supply ports 50 and the air supply fan 54 are connected via the air supply passage 101. A cooling damper 52 is provided in the first cooling passage 102 that branches from the vicinity of the air inlet 50 of the air supply passage 101. For example, the air supply fan 54 is a sirocco fan.

  In addition, an infrared sensor unit 300 is disposed in a recess 310 provided in the upper part 2 e of the heating chamber 2.

  The air supply fan 54 serves as a cooling fan for cooling the circulation fan motor 56 (shown in FIG. 3) and the infrared sensor unit 300. The air supply damper 51 is an example of an air supply opening / closing part. The cooling damper 52 is an example of a cooling passage opening / closing part. The air supply damper 51 (air supply opening / closing portion) and the cooling damper 52 (cooling passage opening / closing portion) constitute a switching mechanism.

  A schematic diagram showing the configuration of the infrared sensor unit 300 is shown in the lower circle portion of FIG. 4A. As shown in FIG. 4A, the infrared sensor unit 300 includes a cylindrical housing 301 in which the axial direction is attached to a recess 310 provided in the upper portion 2e of the heating chamber 2 in the front-rear direction and the horizontal direction, and the cylindrical housing 301. A cylindrical sensor holding portion 302 rotatably supported inside, an infrared sensor 303 held by the sensor holding portion 302, and a front end of the cylindrical housing 301 are attached to the sensor holding portion 302. And an infrared sensor motor 304 to be driven. In this embodiment, the infrared sensor 303 is an area sensor that detects the temperature of 64 regions of 8 × 8, but the infrared sensor is not limited to this and may be a line sensor in which sensor portions are arranged in a straight line. .

  A heat insulating material may be provided below the infrared sensor unit 300. In this case, the temperature of 10 ° C. to 15 ° C. can be lowered than when there is no heat insulating material.

  In this infrared sensor unit 300, the detection surface of the infrared sensor 303 is directed toward the inside of the heating chamber 2 by rotating the cylindrical sensor holding portion 302 by the infrared sensor motor 304 and the detection surface of the infrared sensor 303. Is rotated within a predetermined angle range (for example, 20 degrees) along the horizontal direction and the vertical plane of the main casing 1 (see FIG. 5).

  In FIG. 4A, the air from the air supply fan 54 is supplied into the heating chamber 2 through the plurality of air supply ports 50 in a state where the air supply damper 51 is opened. At this time, the first cooling passage 102 is closed by the cooling damper 52. Further, excess air in the heating chamber 2 naturally flows out from the natural exhaust port 45 to the fourth air passage 204.

  Next, as shown in FIG. 4B, when the air supply damper 51 is closed and the plurality of air supply ports 50 are closed and the first cooling passage 102 is opened by the cooling damper 52, a part of the air from the air supply fan 54 is obtained. Is supplied to the circulation fan motor 56 (shown in FIG. 3) via the air supply passage 101 and the first cooling passage 102.

  Further, by closing the air supply damper 51, the second cooling passage 103 provided in the vicinity of the air supply damper 51 opens, and the infrared sensor unit 300 in which the remaining air from the air supply fan 54 is disposed on the top surface side. To be supplied. The supply air passage 101, the first cooling passage 102, and the second cooling passage 103 constitute a cooling passage for cooling the circulation fan motor 56 (shown in FIG. 3) and the infrared sensor 303.

  In FIG. 4B, the air volume ratio between the first cooling passage 102 and the second cooling passage 103 is 7: 3 to 6: 4. Thereby, in the circulating fan motor 56 and the infrared sensor 303, the ambient temperature which was 120 ° C. when not cooled was lowered to 85 ° C. to 90 ° C.

  Moreover, FIG. 5A-FIG. 5D has shown the schematic diagram for demonstrating operation | movement of the infrared sensor 303 of the said heating cooker.

  5A and 5B show a temperature detection range by the infrared sensor 303 (shown in FIG. 4A) of the infrared sensor unit 300 when detecting the temperature of the object to be heated on the cooking tray 91 placed on the upper stage. The temperature detection range shown in FIG. 5A is the left region on the cooking tray 91 in front view, and the temperature detection range shown in FIG. 5B is the right region on the cooking tray 91 in front view. The cylindrical sensor holding portion 302 having the infrared sensor 303 is rotated by the infrared sensor motor 304 to swing the detection surface of the infrared sensor 303 in the left-right direction. In this embodiment, the temperature detection range of the infrared sensor 303 is divided into three regions: a left region shown in FIG. 5A, a right region shown in FIG. 5B, and a central region between the left region and the right region. However, it may be divided into four or more regions.

  5C and 5D show the temperature detection range by the infrared sensor 303 (shown in FIG. 4A) of the infrared sensor unit 300 when detecting the temperature of the heated object on the bottom surface of the heating chamber 2. FIG. The temperature detection range shown in FIG. 5C is the left region on the bottom surface of the heating chamber 2 in front view, and the temperature detection range shown in FIG. 5D is the right region on the bottom surface of the heating chamber 2 in front view. In this embodiment, as in FIGS. 5A and 5B, the temperature detection range of the infrared sensor 303 is between the left region shown in FIG. 5C, the right region shown in FIG. 5D, and the left region and the right region. Although it is divided into three areas of the central area, it may be divided into a plurality of areas of 4 or more.

  Moreover, FIG. 6 has shown the schematic diagram for demonstrating the structure containing the exhaust unit 200 of the said heating cooker. 6 also shows a state in which the heating chamber 2 is viewed from the right side as in FIG. In FIG. 6, 201 is a first air passage, 202 is a second air passage, 203 is a third air passage, and 207 is a dilution area section.

  A natural exhaust port 45 is provided at the lower end of the rear portion 2d of the heating chamber 2 (see FIG. 2). The natural exhaust port 45 communicates with the exhaust duct 5 through the fourth air passage 204 of the exhaust unit 200 (shown in FIG. 8) and the like. When the air in the heating chamber 2 becomes excessive, the excess air naturally flows out from the natural exhaust port 45 to the fourth air passage 204. A part of the air blown from the exhaust fan 47 is supplied to the front side in the main body casing 1 (shown in FIG. 1) via the third air passage 203.

  Further, a plurality of forced exhaust ports 48 that are opened and closed by an exhaust damper 49 are provided in the inclined portion 2f of the heating chamber 2 (see FIG. 2). The forced exhaust port 48 communicates with the exhaust duct 5 via an exhaust unit 200 (shown in FIG. 8).

  A humidity sensor 53 is attached to the exhaust unit 200. The humidity sensor 53 sends a signal indicating the amount of steam contained in the exhaust gas flowing through the second wind passage 202 to the control device 80 (shown in FIG. 7).

  In the case of steaming cooking, countermeasures against moisture from the heating chamber 2 are taken by making the infrared sensor 303 of the infrared sensor unit 300 determine 180 degrees so as to face the direction opposite to the heating chamber 2. Although not shown, a window portion except for the inside of the heating chamber 2 is provided from the infrared sensor 303, and the edge of the window portion is sealed.

  FIG. 7 shows a control block diagram of the cooking device.

  The cooking device includes a control device 80 including a microcomputer and an input / output circuit. The control device 80 includes an upper heater 20, an intermediate heater 21, a lower heater 22, a steam generating heater 73, a circulation fan motor 56, an exhaust fan motor 57, an air supply fan motor 58, a circulation damper motor 59, Exhaust damper motor 60, supply damper motor 61, cooling damper motor 62, operation panel 9, humidity sensor 53, internal temperature sensor 76, water level sensor 75, tube pump 25, magnetron 4, infrared sensor 303, infrared sensor A motor 304 or the like is connected.

  The control device 80 is based on signals from the operation panel 9, humidity sensor 53, internal temperature sensor 76, water level sensor 75, infrared sensor 303, etc., for upper heater 20, middle heater 21, lower heater 22, and steam generation Heater 73, circulation fan motor 56, exhaust fan motor 57, supply fan motor 58, circulation damper motor 59, exhaust damper motor 60, supply damper motor 61, cooling damper motor 62, tube pump 25 , Magnetron 4, infrared sensor motor 304 and the like are controlled.

  FIG. 8 shows a perspective view of the heating cooker from which the upper surface plate 1a and the rear surface plate (not shown) covering the upper surface and both side surfaces of the main casing 1 (shown in FIG. 1) are removed as viewed from the rear and obliquely upward. . In FIG. 8, the same components as those in FIGS. 1 to 7 are denoted by the same reference numerals.

  As shown in FIG. 8, an air supply unit 100 is provided on the rear side and the left side (right side in FIG. 8) of the heating chamber 2. The air supply unit 100 includes an air supply fan 54 arranged on the lower side, an air supply passage 101 extending upward from the air supply fan 54, and a branch from the upper side of the air supply passage 101, The first cooling passage 102 extends toward the circulation fan motor 56 located in the center of the upper rear side of the chamber 2. Specifically, the air supply unit 100 extends upward from the air supply fan 54 so as to exhibit an inverted L shape.

  Further, an exhaust unit 200 is provided on the rear side and the right side (left side in FIG. 8) of the heating chamber 2. The exhaust unit 200 includes a housing 210 including an exhaust unit cover 220 and an exhaust fan 47 disposed below the housing 210.

  An exhaust damper motor 60 is disposed on the right side of the upper portion of the exhaust unit 200 (left side in FIG. 8). The exhaust damper motor 60 (shown in FIG. 6) is opened and closed by the exhaust damper motor 60.

  A partition plate 312 is erected in the front-rear direction on the upper portion 2 e of the heating chamber 2. The partition plate 312 allows the cooling air flowing from the second cooling passage 103 (shown in FIG. 4B) provided in the vicinity of the air supply damper 51 (shown in FIGS. 4A and 4B) to the region of the infrared sensor unit 300. It is blocked so that it does not flow on the left side.

  FIG. 9 is a perspective view of the air supply unit 100 as viewed from obliquely above. In FIG. 9, reference numeral 61 denotes an air supply damper motor for opening and closing the air supply damper 51 (shown in FIG. 4A).

  As shown in FIG. 9, the air supply unit 100 includes an air supply passage 101 extending in the vertical direction, a first cooling passage 102 extending laterally from the upper end side of the air supply passage 101, and an air supply Provided on the downstream side of the passage 101, the second cooling passage 103 opening toward the infrared sensor unit 300, the cam portion 104 driven by the air supply damper motor 61, and the upper end side of the air supply passage 101. And a second cooling passage 103 (shown in FIGS. 4A and 4B). The lower end side of the air supply passage 101 is connected to an air outlet (not shown) of the air supply fan 54.

  Moreover, FIG. 10 has shown the perspective view of the 1st switching mode state which removed a part of the air supply unit 100 of the said heating cooker. 10, the same reference numerals are assigned to the same components as those in FIG.

  In FIG. 10, in the microwave heating in which the microwave from the magnetron 4 (shown in FIG. 7) is supplied into the heating chamber 2, the control device 80 stops the supply with the circulation fan 19 (shown in FIG. 3) stopped. The air damper motor 61 (shown in FIG. 7) drives the air supply damper 51 to open the air supply port 50, and the cooling damper motor 62 (shown in FIG. 4A) drives the cooling damper 52 to drive the first. The cooling passage 102 is closed. Then, the air supply fan 54 is driven by the air supply fan motor 58 (shown in FIG. 4A) to heat the outside air supplied from the air supply fan 54 through the air supply passage 101 and the plurality of air supply ports 50. Supply to the chamber 2 (first switching mode).

  Thereby, all the outside air from the air supply fan 54 is supplied into the heating chamber 2 through the air supply passage 101.

  Therefore, when supply of air into the heating chamber 2 is necessary and cooling of the circulation fan motor 56 is not required, all of the outside air from the supply fan 54 passes through the supply passage 101 into the heating chamber 2. Can supply. Therefore, the air supply fan 54 can be used as a dedicated fan for supplying air into the heating chamber 2, and air can be supplied efficiently into the heating chamber 2.

  As shown in FIG. 10, the cooling damper 52 is made of a plate-like member, and can be moved in and out in a direction orthogonal to the first cooling passage 102 by a cooling damper motor 62 (shown in FIG. 7). Is provided.

  Moreover, FIG. 11 has shown the perspective view of the 2nd switching mode state which removed a part of the air supply unit 100 of the said heating cooker. 11, the same reference numerals are assigned to the same components as those in FIG.

  In FIG. 11, saturated steam or superheated steam is supplied to the heating chamber 2, and the circulation fan motor 56 is driven by the circulation fan motor 56 to circulate the steam while the upper heater 20, the middle heater 21, and the lower heater 22 (FIG. 3). The control device 80 closes the air supply port 50 (shown in FIG. 10) by the air supply damper 51 and opens the first cooling passage 102 by the cooling damper 52. Then, by driving the air supply fan 54 by the air supply fan motor 58 (shown in FIG. 4A), the outside air from the air supply fan 54 is supplied to the circulation fan via the air supply passage 101 and the first cooling passage 102. While being supplied toward the motor 56, it is supplied to the infrared sensor unit 300 through the air supply passage 101 and the second cooling passage 103 (second switching mode).

  Therefore, when the supply of air into the heating chamber 2 is unnecessary, and when the temperature of the circulation fan motor 56 increases due to the heat generated by the circulation fan motor 56 itself or the heat from the heating chamber 2, the supply fan 54 A part of the outside air can be supplied to the circulation fan motor 56 via the air supply passage 101 and the first cooling passage 102, while the remaining outside air from the air supply fan 54 can be supplied to the infrared sensor unit 300. Therefore, the air supply fan 54 can be used as a dedicated fan for cooling the circulation fan motor 56 and the infrared sensor unit 300, and the circulation fan motor 56 and the infrared sensor unit 300 can be efficiently cooled.

  In addition, when the air in the heating chamber 2 is circulated and heated by circulating hot air that heats the object to be heated, the air supply unit 100 may be in the second switching mode state.

  The outside air supplied from the air supply fan 54 cools the circulation fan motor 56 and the infrared sensor unit 300 and then flows through the main body casing 1 (shown in FIGS. 1 and 2) to the exhaust duct 5 (see FIG. 1). 1) and discharged to the outside.

  Further, FIG. 12 shows a perspective view of a state where a part of the air supply unit 100 of the cooking device is removed. 12, the same reference numerals are assigned to the same components as those in FIG.

  In FIG. 12, when the object to be heated in the heating chamber 2 is heated by microwaves, the control device 80 (shown in FIG. 7) opens the air supply port 50 by the air supply damper 51 and opens the cooling damper 52. The degree is set to a predetermined opening, for example, 20%, and a part of the first cooling passage 102 is opened. Then, the air supply fan 54 is driven by the air supply fan motor 58 (shown in FIG. 7). Thus, a predetermined amount (for example, 70%) of the outside air from the air supply fan 54 is supplied into the heating chamber 2 through the air supply passage 101 (fourth switching mode). The third switching mode is described in a second embodiment to be described later.

  FIG. 13 shows a view of the air supply unit 100 as viewed from the back side, and FIG. 14 is a cross-sectional view of the air supply damper 51 in the closed state and the cooling damper 52 in the open state as viewed from XIV-XIV in FIG. Is shown. 13 and 14, the same reference numerals are assigned to the same components as those in FIG.

  As shown in FIG. 14, the air supply damper 51 is rotatably supported by the air supply unit 100 via the shaft portion 106. The air supply damper 51 is urged in the opening direction by a spring (not shown), and the air supply damper 51 is closed by the cam portion 104 to block the opening 105 against the urging force of the spring. The opening 105 faces a plurality of air supply ports 50 (shown in FIG. 2) provided in the inclined portion 2 f of the heating chamber 2. When the supply damper 51 is closed, the edges of the supply damper 51 and the opening 105 are sealed with a seal member.

  On the other hand, FIG. 15 shows a cross-sectional view of the air supply damper 51 in the open state and the cooling damper 52 in the closed state as viewed from XIV-XIV in FIG. As the cam portion 104 rotates, the supply damper 51 is opened by the biasing force of the spring, and the opening portion 105 is opened.

  16 shows a side view of the air supply unit 100, and FIG. 17 shows a cross-sectional view of the air supply damper 51 in the closed state and the cooling damper 52 in the open state as viewed from XVII-XVII in FIG. . 16 and 17, the same components as those in FIG. 10 are denoted by the same reference numerals.

  As shown in FIG. 17, the outside air flows to the circulation fan motor 56 (shown in FIG. 11) through the first cooling passage 102 by retracting the cooling damper 52 from the inside of the first cooling passage 102 (the back side in the drawing). While the flow path is opened, the flow path through which the outside air flows into the heating chamber 2 via the air supply passage 101 is closed by closing the air supply damper 51.

  18 shows a cross-sectional view of the air supply damper 51 in the closed state as viewed from XVIII-XVIII in FIG. As shown in FIG. 18, when closing the air supply damper 51, the cam surface of the cam portion 104 driven by the air supply damper motor 61 rotates downward, so that the outside air flows above the cam portion 104. The second cooling passage 103 is widened.

  On the other hand, FIG. 19 shows a cross-sectional view when the air supply damper 51 is open and the cooling damper 52 is closed as viewed from XVII-XVII in FIG. 16, and FIG. 20 is a supply as viewed from XVIII-XVIII in FIG. A sectional view of the air damper 51 in an open state is shown. 19 and 20, the same components as those in FIG. 10 are denoted by the same reference numerals.

  As shown in FIG. 19, a cooling fan motor 56 (shown in FIG. 11) is drawn through the first cooling passage 102 by pulling out the cooling damper 52 into the first cooling passage 102 (in the direction perpendicular to the paper surface and upward). While the flow path through which the outside air flows is closed, opening the air supply damper 51 opens the opening 105 and opens the flow path through which the outside air flows into the heating chamber 2 via the air supply passage 101.

  According to the heating cooker having the above configuration, when the object to be heated in the heating chamber 2 is heated by microwaves, the air supply fan 54 and the switching mechanism (51, 52) with the circulation fan 19 stopped by the control device 80 are used. Is switched to the first switching mode in which the outside air supplied from the air supply fan 54 is supplied into the heating chamber 2 through the air supply passage 101. On the other hand, when the object to be heated in the heating chamber 2 is heated by at least one of the upper heater 20, the middle heater 21, and the lower heater 22 and the gas in the heating chamber 2 is circulated by the circulation fan 19, switching is performed by the control device 80. A second switch for controlling the mechanism (51, 52) to supply the outside air supplied from the supply fan 54 to the circulation fan motor 56 and the infrared sensor 303 via the first cooling passage 102 and the second cooling passage 103. Switch to mode.

  Accordingly, even when the circulation fan motor 56 and the infrared sensor 303 are exposed to a high temperature during heating of the heater in which the heating chamber 2 is heated to a high temperature, the circulation fan motor 56 and the infrared sensor 303 are caused by the outside air supplied from the supply fan 54. Can be cooled. Therefore, the circulation fan motor 56 and the infrared sensor 303 can be efficiently cooled using the air supply fan 54, and deterioration and breakage of the circulation fan motor 56 and the infrared sensor 303 can be prevented.

  The control device 80 controls the air supply damper 51 (air supply opening / closing portion) and the cooling damper 52 (cooling passage opening / closing portion) to open the air supply opening 50 by the air supply damper 51 in the first switching mode. Then, the first cooling passage 102 is closed by the cooling damper 52. Thereby, the outside air supplied from the air supply fan 54 is supplied into the heating chamber 2 through the air supply passage 101 without flowing into the first cooling passage 102. On the other hand, the switching mechanism (51, 52) is controlled by the control device 80, and in the second switching mode, the air supply port 50 is closed by the air supply damper 51 to open the second cooling passage 103 and the cooling damper 52 is used. The first cooling passage 102 is opened. Thus, the outside air supplied from the air supply fan 54 does not flow into the air supply passage 101 but is supplied to the circulation fan motor 56 through the first cooling passage 102 and through the second cooling passage 103. It is supplied to the infrared sensor 303.

  In this way, it is possible to switch between the first switching mode for supplying air into the heating chamber 2 and the second switching mode for cooling the circulation fan motor 56 and the infrared sensor 303 with a simple configuration.

  Further, the infrared sensor 303 and the infrared sensor motor 304 are linearly arranged in the order of the infrared sensor 303 and the infrared sensor motor 304 from the upstream side along the flow path through which the outside air from the second cooling passage 103 flows. In the flow path through which the outside air flows from the second cooling passage 103, the infrared sensor 303 is preferentially cooled first, and then the infrared sensor motor 304 is cooled. Thus, the temperature of the infrared sensor 303 can be reliably lowered to prevent a decrease in detection accuracy, and the infrared sensor motor 304 can also be cooled.

  In the infrared sensor unit 300, the center axis of the infrared sensor motor 304 is offset from the center axis of the cylindrical housing 301, so that the outside air flows in the flow path through which the outside air from the second cooling passage 103 flows. A portion where the infrared sensor motor 304 is not hidden by the infrared sensor 303 in a front view seen from the upstream side where the air flows is formed, and the outside air from the second cooling passage 103 hits that portion, thereby cooling the infrared sensor motor 304 Will increase.

[Second Embodiment]
Moreover, the heating cooker of 2nd Embodiment of this invention has the structure similar to the heating cooker of 1st Embodiment except a switching mechanism.

  In the heating cooker of the second embodiment, the switching mechanism (51, 52) is switched to the third switching mode. In the third switching mode, by opening the air supply damper 51 (air supply opening / closing part) to a preset opening degree and opening the cooling damper 52 (cooling passage opening / closing part) to a preset opening degree, The outside air supplied from the air supply fan 54 flows through the air supply passage 101, the first cooling passage 102, and the second cooling passage 103.

  As a result, the outside air supplied from the air supply fan 54 is supplied into the heating chamber 2 through the air supply passage 101, and is supplied to the circulation fan motor 56 through the first cooling passage 102. It is supplied to the infrared sensor 303 through the cooling passage 103. Here, the heating chamber 2, the circulation fan motor 56, and the infrared sensor 303 are set by appropriately setting the opening degree of at least one of the air supply damper 51 (air supply opening / closing portion) or the cooling damper 52 (cooling passage opening / closing portion). It is possible to supply the optimum amount of outside air by controlling the flow rate ratio.

[Third Embodiment]
Moreover, the heating cooker of 3rd Embodiment of this invention was provided with the air supply unit 100 which has the air supply path 101, the 1st cooling path 102, and the 2nd cooling path 103 in the heating cooker of 1st Embodiment. On the other hand, a cooling passage for guiding outside air supplied from the cooling fan toward the circulation fan motor and the infrared sensor is provided separately from the air supply passage.

  According to the cooking device of the third embodiment, even when the circulation fan motor 56 and the infrared sensor 303 are exposed to a high temperature at the time of heating the heater in which the heating chamber 2 is heated, the circulation is performed by the outside air supplied from the cooling fan. The fan motor 56 and the infrared sensor 303 can be cooled. Therefore, the circulation fan motor 56 and the infrared sensor 303 can be efficiently cooled, performance degradation can be suppressed, and deterioration and breakage of the circulation fan motor 56 and the infrared sensor 303 can be prevented.

  In the cooking device of the present invention, healthy cooking can be performed by using superheated steam or saturated steam in a microwave oven or the like. For example, in the cooking device of the present invention, superheated steam or saturated steam having a temperature of 100 ° C. or higher is supplied to the food surface, and the superheated steam or saturated steam attached to the food surface is condensed to give a large amount of latent heat of condensation to the food. So it can efficiently transfer heat to food. Moreover, when condensed water adheres to the food surface and salt and oil are dropped together with condensed water, salt and oil in the food can be reduced. Furthermore, the heating chamber is filled with superheated steam or saturated steam and becomes in a low oxygen state, so that cooking with reduced oxidation of food is possible. Here, the low oxygen state refers to a state where the volume% of oxygen is 10% or less (for example, 0.5 to 3%) in the heating chamber.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the first to third embodiments, and various modifications can be made within the scope of the present invention. For example, what combined suitably the content described in the said 1st-3rd embodiment is good also as one Embodiment of this invention.

  The present invention and the embodiment are summarized as follows.

The cooking device of this invention is
A body casing 1;
A heating chamber 2 disposed in the main casing 1;
A circulation fan 19 for circulating the gas in the heating chamber 2;
An air supply fan 54 for supplying outside air into the heating chamber 2;
An air supply passage 101 for guiding outside air supplied from the air supply fan 54 into the heating chamber 2;
A first cooling passage 102 for guiding outside air supplied from the air supply fan 54 toward a circulation fan motor 56 that drives the circulation fan 19;
An infrared sensor 303 disposed in the vicinity of the heating chamber 2 for detecting the temperature in the heating chamber 2,
A second cooling passage 103 provided on the downstream side of the air supply passage 101 and opening toward the infrared sensor 303;
In the first switching mode in which the outside air supplied from the air supply fan 54 is supplied into the heating chamber 2 through the air supply passage 101, or the outside air supplied from the air supply fan 54 is changed to the first cooling mode. A switching mechanism (51, 52) for switching to a second switching mode that supplies the circulating fan motor 56 via the passage 102 and supplies it to the infrared sensor 303 via the second cooling passage 103;
The circulation fan 19, the air supply fan 54, and a control device 80 for controlling the switching mechanism (51, 52) are provided.

  According to the above configuration, when the object to be heated in the heating chamber 2 is heated by, for example, microwaves, the supply fan 54 and the switching mechanism (51, 52) are controlled by the control device 80 with the circulation fan 19 stopped. Thus, the first switching mode in which the outside air supplied from the supply fan 54 is supplied into the heating chamber 2 via the supply passage 101 is switched. On the other hand, when the object to be heated in the heating chamber 2 is heated by, for example, the heaters 21, 22, and 23 and the gas in the heating chamber 2 is circulated by the circulation fan 19, the control device 80 controls the switching mechanism (51, 52). Then, it switches to the second switching mode in which the outside air supplied from the air supply fan 54 is supplied to the infrared sensor 303 via the second cooling passage 103 that supplies the circulation fan motor 56 via the first cooling passage 102.

  Accordingly, even when the circulation fan motor 56 and the infrared sensor 303 are exposed to a high temperature during heating of the heater in which the heating chamber 2 is heated to a high temperature, the circulation fan motor 56 and the infrared sensor 303 are caused by the outside air supplied from the supply fan 54. Can be cooled. Therefore, the circulation fan motor 56 and the infrared sensor 303 can be efficiently cooled using the air supply fan 54, and deterioration and breakage of the circulation fan motor 56 and the infrared sensor 303 can be prevented.

Moreover, in the heating cooker of one embodiment,
The switching mechanism (51, 52)
An air supply port opening / closing part 51 for opening and closing an air supply port 50 provided at the downstream end of the air supply passage 101, and a cooling passage opening / closing part 52 for opening and closing the first cooling passage 102,
The control device 80 includes:
In the first switching mode, the air inlet 50 is opened by the air inlet opening / closing unit 51 and the first cooling passage 102 is closed by the cooling passage opening / closing unit 52, while in the second switching mode, the air supply port 50 is closed. The second cooling passage 103 is opened by closing the air supply port 50 by the air opening / closing portion 51, and the first cooling passage 102 is opened by the cooling passage opening / closing portion 52.

  According to the embodiment, the control device 80 controls the switching mechanism (51, 52), and in the first switching mode, the air supply port 50 is opened by the air supply port opening / closing unit 51, and the cooling passage opening / closing unit 52 is used. The first cooling passage 102 is closed. Thereby, the outside air supplied from the air supply fan 54 is supplied into the heating chamber 2 through the air supply passage 101 without flowing into the first cooling passage 102. On the other hand, the switching mechanism (51, 52) is controlled by the control device 80, and in the second switching mode, the air supply port 50 is closed by the air supply port opening / closing part 51 to open the second cooling passage 103 and the cooling passage. The first cooling passage 102 is opened by the opening / closing part 52. Thus, the outside air supplied from the air supply fan 54 does not flow into the air supply passage 101 but is supplied to the circulation fan motor 56 through the first cooling passage 102 and through the second cooling passage 103. It is supplied to the infrared sensor 303.

  Therefore, the first switching mode for supplying air into the heating chamber 2 and the second switching mode for cooling the circulation fan motor 56 and the infrared sensor 303 can be switched with a simple configuration.

Moreover, in the heating cooker of one embodiment,
The switching mechanism (51, 52)
The air supply opening / closing part 51 is opened to a preset opening, and the cooling passage opening / closing part 52 is opened to a preset opening so that the outside air supplied from the supply fan 54 is supplied to the supply air. It is possible to switch to the third switching mode in which the air flows through the opening 50, the first cooling passage 102 and the second cooling passage 103.

  According to the above embodiment, the switching mechanism (51, 52) is switched to the third switching mode to open the air inlet opening / closing part 51 to a preset opening and the cooling passage opening / closing part 52 is preset. By opening the opening, the outside air supplied from the air supply fan 54 flows through the air supply port 50, the first cooling passage 102, and the second cooling passage 103. As a result, the outside air supplied from the air supply fan 54 is supplied into the heating chamber 2 through the air supply passage 101, and is supplied to the circulation fan motor 56 through the first cooling passage 102. It is supplied to the infrared sensor 303 through the cooling passage 103. Here, by appropriately setting the opening degree of at least one of the air inlet opening / closing part 51 or the cooling passage opening / closing part 52, the flow ratio to the heating chamber 2, the circulation fan motor 56, and the infrared sensor 303 is controlled, It becomes possible to supply the optimum amount of outside air to each.

Moreover, in the heating cooker of one embodiment,
An infrared sensor motor 304 for rotating the infrared sensor 303;
The infrared sensor 303 and the infrared sensor motor 304 are linearly arranged in order of the infrared sensor 303 and the infrared sensor motor 304 from the upstream side along the flow path through which the outside air from the second cooling passage 103 flows. ing.

  According to the embodiment, the infrared sensor 303 and the infrared sensor motor 304 are linearly arranged in the order of the infrared sensor 303 and the infrared sensor motor 304 from the upstream side along the flow path through which the outside air from the second cooling passage 103 flows. By disposing, the infrared sensor 303 is preferentially cooled first in the flow path through which the outside air from the second cooling passage 103 flows, and then the infrared sensor motor 304 is cooled. Thus, the temperature of the infrared sensor 303 can be reliably lowered to prevent a decrease in detection accuracy, and the infrared sensor motor 304 can also be cooled.

Moreover, in the heating cooker of one embodiment,
A cylindrical housing 301 disposed in the main body casing;
A sensor holding portion 302 that is rotatably supported in the cylindrical housing 301 and holds the infrared sensor 303;
The sensor holding unit 302 is driven by the infrared sensor motor 304,
The central axis of the infrared sensor motor 304 is offset with respect to the central axis of the cylindrical housing 301.

  According to the embodiment, the infrared sensor 303 held by the sensor holding unit 302 is rotated by driving the sensor holding unit 302 by the infrared sensor motor 304. Since the center axis of the infrared sensor motor 304 is offset with respect to the center axis of the cylindrical housing 301, the front surface viewed from the upstream side where the outside air flows in the flow path through which the outside air flows from the second cooling passage 103. It is possible to provide a portion where the infrared sensor motor 304 is not hidden by the infrared sensor 303 when viewed, and the cooling effect of the infrared sensor motor 304 is enhanced by the outside air hitting that portion.

The cooking device of this invention is
A body casing 1;
A heating chamber 2 disposed in the main casing 1;
A circulation fan 19 for circulating the gas in the heating chamber 2;
An infrared sensor 303 which is disposed on the upper side in the main body casing 1 and detects the temperature in the heating chamber 2;
A circulation fan motor 56 for driving the circulation fan 19 and a cooling fan 54 for supplying outside air to the infrared sensor 303;
A cooling passage for guiding the outside air supplied from the cooling fan 54 toward the circulating fan motor 56 and the infrared sensor 303 is provided.

  According to the above configuration, when the object to be heated in the heating chamber 2 is heated by, for example, the heaters 21, 22, and 23 and the gas in the heating chamber 2 is circulated by the circulation fan 19, the outside air supplied from the cooling fan 54. Is supplied to the circulation fan motor 56 and the infrared sensor 303 through the cooling passage.

  As a result, even when the circulation fan motor 56 and the infrared sensor 303 are exposed to a high temperature during heating of the heater in which the heating chamber 2 is heated, the circulation fan motor 56 and the infrared sensor 303 are caused to be exposed by the outside air supplied from the cooling fan 54. Can be cooled. Therefore, the circulation fan motor 56 and the infrared sensor 303 can be efficiently cooled, performance degradation can be suppressed, and deterioration and breakage of the circulation fan motor 56 and the infrared sensor 303 can be prevented.

DESCRIPTION OF SYMBOLS 1 ... Main body casing 1a ... Top plate 2 ... Heating chamber 2a ... Opening part 3 ... Door 4 ... Magnetron 5 ... Exhaust duct 5a ... Outlet 6 ... Dew receptacle 7 ... Outer glass 8 ... Handle 9 ... Operation panel 10 ... Color liquid crystal Display unit 11 ... Button group 12 ... Cancel key 13 ... Start key 14 ... Infrared light receiving unit 15 ... Object to be heated 16A, 16B ... Upper shelf holder 17A, 17B ... Lower shelf holder 18 ... Circulation duct 19 ... Circulation fan 20 ... Upper heater 21 ... Middle heater 22 ... Lower heater 23 ... Circulating damper 25 ... Tube pump 26 ... Water supply tank 27 ... Suction port 28 ... Upper outlet 29 ... First rear outlet 30 ... Second rear outlet 31 ... Third rear outlet 35 ... Steam tube 36 ... Steam pipe 37 ... Steam supply port 40 ... Water supply / drain tube 41 ... Water supply tank body 42 ... Communication pipe 43 ... Tank cover 44 ... Tank joy Port 45 ... Natural exhaust port 46 ... First exhaust path 47 ... Exhaust fan 48 ... Forced exhaust port 49 ... Exhaust damper 50 ... Air supply port 51 ... Supply air damper 52 ... Cooling damper 53 ... Humidity sensor 54 ... Air supply fan 55 ... Front plate 56 ... Circulating fan motor 57 ... Exhaust fan motor
58 ... Motor for air supply fan
59 ... circulation damper motor 60 ... exhaust damper motor 61 ... air supply damper motor 62 ... cooling damper motor 70 ... steam generator 71 ... steam generator 71a ... bottom 72 ... lid part 73 ... steam generator heater 75 ... Water level sensor 75a, 75b ... Electrode rod 76 ... Inside temperature sensor 80 ... Control device 91, 92 ... Cooking tray 100 ... Air supply unit 101 ... Air supply passage 102 ... First cooling passage 103 ... Second cooling passage 200 ... Exhaust unit DESCRIPTION OF SYMBOLS 201 ... 1st air path 202 ... 2nd air path 203 ... 3rd air path 204 ... 4th air path 207 ... Dilution area part 300 ... Infrared sensor unit 301 ... Cylindrical housing 302 ... Sensor holding part 303 ... Infrared sensor 304 ... Infrared sensor motor 310 ... recess

Claims (5)

A body casing;
A heating chamber disposed in the main body casing;
A circulation fan for circulating the gas in the heating chamber;
An air supply fan for supplying outside air into the heating chamber;
An air supply passage for guiding outside air supplied from the air supply fan into the heating chamber;
A first cooling passage that guides outside air supplied from the supply fan toward a circulation fan motor that drives the circulation fan;
An infrared sensor disposed in the vicinity of the heating chamber for detecting the temperature in the heating chamber;
A second cooling passage provided downstream of the air supply passage and opening toward the infrared sensor;
The first switching mode in which the outside air supplied from the air supply fan is supplied to the heating chamber through the air supply passage, or the outside air supplied from the air supply fan is supplied to the heating chamber through the first cooling passage. A switching mechanism for switching to a second switching mode for supplying the circulating fan motor and supplying to the infrared sensor via the second cooling passage;
A heating cooker comprising the circulation fan, the air supply fan, and a control device for controlling the switching mechanism. The heating cooker according to claim 1, wherein
The switching mechanism is
An air supply port opening / closing portion that opens and closes an air supply port provided at a downstream end of the air supply passage, and a cooling passage opening / closing portion that opens and closes the first cooling passage,
The control device
In the first switching mode, the air inlet opening is opened by the air inlet opening / closing portion and the first cooling passage is closed by the cooling passage opening / closing portion, while the air inlet opening / closing portion is closed in the second switching mode. The cooking device according to claim 1, wherein the second cooling passage is opened by closing the air supply port and the first cooling passage is opened by the cooling passage opening / closing section. The cooking device according to claim 2,
The switching mechanism is
The air supply opening / closing part is opened to a preset opening, and the cooling passage opening / closing part is opened to a preset opening so that the outside air supplied from the air supply fan is A heating cooker characterized in that it can be switched to a third switching mode in which it flows through the first cooling passage and the second cooling passage. In the heating cooker according to any one of claims 1 to 3,
An infrared sensor motor for rotating the infrared sensor;
The infrared sensor and the infrared sensor motor are linearly arranged in the order of the infrared sensor and the infrared sensor motor from the upstream side along a flow path through which the outside air from the second cooling passage flows. A heating cooker. A body casing;
A heating chamber disposed in the main body casing;
A circulation fan for circulating the gas in the heating chamber;
An infrared sensor that is disposed on the upper side of the main body casing and detects the temperature in the heating chamber;
A circulation fan motor for driving the circulation fan and a cooling fan for supplying outside air to the infrared sensor;
A heating cooker, comprising: a cooling passage for guiding outside air supplied from the cooling fan toward the circulation fan motor and the infrared sensor.

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