JP6663737B2 - Cooking device - Google Patents

Description

  The present invention relates to a cooking device.

  2. Description of the Related Art Conventionally, as a cooking device, there is a cooking device provided with an infrared sensor for detecting the temperature of an object to be heated in a heating cabinet, and scanning the surface temperature of food by swinging the infrared sensor by a motor (for example, Japanese Patent Laid-Open No. -265152 (see Patent Document 1).

JP-A-6-265152

  In a heating cooker having such a configuration, microwave heating using an infrared sensor is performed in a state where the motor temperature is increased due to heat from a heating chamber due to heating cooking using a heater and the temperature exceeds the operating temperature range. In such a case, the torque of the motor decreases to cause an operation failure, and the temperature of the object to be heated cannot be detected.

  Therefore, in the cooking device having the above-described configuration, assuming that the motor temperature is close to the internal temperature, whether the infrared sensor is driven by the motor based on the internal temperature detected by the internal temperature sensor. It is conceivable to determine whether or not the heating cooker is described in order to facilitate understanding of the present invention, and is not a known technology and not a conventional technology.

  However, in a heating cooker that determines whether to drive with a motor based on the internal temperature, the internal temperature detected by the internal temperature sensor does not match the motor temperature. There is a problem that it is not possible to correctly determine whether or not the range has been exceeded, and the motor control is not performed correctly.

  Therefore, an object of the present invention is to provide a heating cooker that can perform optimal motor control according to the temperature of a motor that drives an infrared sensor or the ambient temperature.

In order to solve the above-mentioned problems, a heating cooker of the present invention includes:
A heating cabinet,
An infrared sensor for detecting the temperature of the object to be heated housed in the heating chamber,
A motor that drives the infrared sensor to change the direction of the detection surface of the infrared sensor,
A motor control unit that controls the motor based on the temperature or the ambient temperature of the motor ,
An interior light for illuminating the inside of the heating oven,
The motor control unit determines whether the motor is operating normally based on a detection result of the infrared sensor when the motor is driven so as to detect infrared rays emitted from the interior lamp. And a motor operation determining unit .

Also, in the heating cooker of one embodiment,
The infrared sensor has a sensor unit and a temperature detection unit that detects the temperature of the sensor unit,
The motor control unit controls the motor based on the temperature of the sensor unit, using the temperature of the sensor unit detected by the temperature detection unit of the infrared sensor as the temperature of the motor or the ambient temperature.

Also, in the heating cooker of one embodiment,
The motor control unit stops the motor when the temperature of the motor or the ambient temperature exceeds a preset upper limit temperature.

Also, in the heating cooker of one embodiment,
The motor control unit controls the motor to drive the motor at a lower speed than normal when the temperature of the motor or the ambient temperature exceeds a preset upper limit temperature.

Also, in the heating cooker of one embodiment,
A plurality of members with different infrared emissivity arranged at different positions around the infrared sensor driven by the motor,
As the infrared sensor detects each infrared ray emitted from a plurality of members having different infrared emissivities, the motor is driven by the motor control unit based on the detection result of the infrared sensor at that time. And a motor operation determining unit for determining whether the motor is operating normally.

Also, in the heating cooker of one embodiment,
An interior light for illuminating the inside of the heating oven,
The motor control unit determines whether the motor is operating normally based on a detection result of the infrared sensor when the motor is driven so as to detect infrared rays emitted from the interior lamp. A motor operation determination unit.

  As is clear from the above, according to the present invention, it is an object of the present invention to provide a cooking device capable of performing optimal motor control according to the temperature of a motor driving an infrared sensor or the ambient temperature.

FIG. 1 is a schematic front view of a heating cooker according to a first embodiment of the present invention when a door is closed. FIG. 2 is a schematic front view when the door of the cooking device is opened. FIG. 3 is a schematic diagram for explaining a configuration of a main part of the cooking device. FIG. 4 is a schematic diagram for explaining a configuration of a main part including an air supply unit of the cooking device. FIG. 5 is a perspective view of a state where a part of a main body casing of the cooking device is removed. FIG. 6A is a schematic diagram for explaining the operation of the infrared sensor unit of the cooking device. FIG. 6B is a schematic diagram for explaining the operation of the infrared sensor unit of the heating cooker. FIG. 7 is a perspective view of the infrared sensor unit of the cooking device as viewed obliquely from above. FIG. 8 is an exploded perspective view of the infrared sensor unit. FIG. 9 is a top view in a state where the infrared sensor of the infrared sensor unit faces the heating cabinet side. FIG. 10 is a side view showing a state where the infrared sensor of the infrared sensor unit faces the heating cabinet side. FIG. 11 is a bottom view in a state where the infrared sensor of the infrared sensor unit faces the heating cabinet side. FIG. 12 is a longitudinal sectional view taken along line XII-XII in FIG. FIG. 13 is a longitudinal sectional view taken along line XIII-XIII in FIG. FIG. 14 is a longitudinal sectional view of the infrared sensor unit of FIG. 12 taken along line XIII-XIII in FIG. 12 with the infrared sensor facing outward. FIG. 15 shows a control block diagram of the cooking device. FIG. 16 is a longitudinal sectional view showing a state in which the infrared sensor of the infrared sensor unit of the heating cooker according to the second embodiment of the present invention faces the heating cabinet side. FIG. 17 is a longitudinal sectional view showing a state where the infrared sensor of the infrared sensor unit faces outward. FIG. 18 shows a control block diagram of the heating cooker. FIG. 19A is a schematic diagram for explaining the operation of the infrared sensor unit of the cooking device according to the third embodiment of the present invention. FIG. 19B is a schematic diagram for explaining the operation of the infrared sensor unit of the cooking device. FIG. 20 shows a control block diagram of the cooking device. FIG. 21A is a schematic diagram for explaining the operation of the infrared sensor unit of the heating cooker according to the fourth embodiment of the present invention. FIG. 21B is a schematic diagram for explaining the operation of the infrared sensor unit of the cooking device.

  Hereinafter, a heating cooker according to the present invention will be described in detail with reference to the illustrated embodiments.

[First Embodiment]
FIG. 1 is a schematic front view of the cooking device according to the first embodiment of the present invention when the door is closed, and FIG. 2 is a schematic front view of the cooking device when the door is opened.

  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 a front opening 2 a, A door 3 for opening and closing the opening 2a of the storage 2;

  An exhaust duct 5 having an outlet 5 a is provided above and behind the main casing 1. Further, a dew receiver 6 is detachably attached to a lower portion of the front surface of the main casing 1. The dew receiver 6 is located below the door 3 and can receive water droplets from the rear surface of the door 3 (the surface on the side of the heating chamber 2) and the front plate 55 of the main casing 1. Further, a water supply tank 26 is detachably attached to a lower portion 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 around a lower side. 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 located 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 section 10 and a button group 11. The button group 11 includes a cancel key 12 that is pressed when the heating is stopped halfway, and a warm start key 13 that is pressed when the heating is started. Further, the operation panel 9 is provided with an infrared light receiving unit 14 that receives infrared light from a smartphone or the like.

  An object to be heated 15 is accommodated in the heating chamber 2. Further, metal cooking trays 91 and 92 (shown in FIG. 3) can be put in and taken out of the heating cabinet 2. On the inner surfaces of the left side portion 2b and the right side portion 2c of the heating cabinet 2, upper shelf receivers 16A and 16B for supporting the cooking tray 91 are provided. Further, lower shelf supports 17A and 17B that support 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 cabinet 2 so as to be located below the upper shelf receivers 16A and 16B. .

  FIG. 3 is a schematic diagram for explaining a configuration of a main part of the cooking device. FIG. 3 shows a state where the heating chamber 2 is viewed from the left side. 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, a middle heater 21, a lower heater 22, a circulation damper 23, a tube pump 25, a water supply tank 26, and a steam generator 70. Have. Each of the upper heater 20, the middle heater 21 and the lower heater 22 is formed of, for example, a sheath heater. Note that the tube pump 25 may be a pump that can switch between a water supply operation and a drainage operation depending on the driving direction.

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

  The circulation duct 18 communicates with the inside of the heating cabinet 2 via the suction port 27, the upper outlet 28, and the first to third rear outlets 29 to 31. The circulation duct 18 is provided from the upper side to the rear side of the heating chamber 2 and extends to exhibit an inverted L-shape. The width of the circulation duct 18 in the left-right direction is set smaller 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. It blows out radially outside of the fan 19. More specifically, on the upper side of the circulation fan 19, air and the like flows obliquely upward from the circulation fan 19, and then flows from the rear to the front. On the other hand, on the lower side of the circulation fan 19, the air and the like flows obliquely downward from the circulation fan 19, and then flows downward from above. Note that the air and the like are examples of a heat medium.

  An internal temperature sensor 76 (shown in FIG. 15) is arranged in the circulation duct 18 and near the outside of the circulation fan 19. The temperature of the heat medium sucked from the inside of the heating chamber 2 through the suction port 27, that is, the temperature of the chamber, is detected by the internal temperature sensor 76.

  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 or the like 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 and the like from the circulation fan 19 to the upper heater 20 and heats air and the like from the circulation fan 19 to the lower heater 22.

  The lower heater 22 is disposed in the circulation duct 18 and faces the rear part 2 d of the heating chamber 2. The lower heater 22 heats air and the like 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 rotation of the circulation damper 23 is performed by a circulation damper motor 59 (shown in FIG. 15).

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

  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 is heated by the upper heater 20, the middle heater 21 and the lower heater 22 to 100 ° C. The above superheated steam is obtained.

  Further, a water level sensor 75 including a pair of electrode rods 75a and 75b is attached to the lid 72. It is determined whether or not the water level on the bottom 71a of the steam generation container 71 has reached a predetermined water level based on whether or not the electrode rods 75a and 75b have become conductive.

  The tube pump 25 squeezes an elastically deformable water supply / drain tube 40 made of silicon rubber or the like with a roller (not shown), and flows water in the water supply tank 26 to the steam generator 70 depending on the driving direction of the roller. Alternatively, the water in the steam generator 70 flows into the water supply tank 26.

  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 inside the water supply tank main 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 / drain 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.

  FIG. 4 is a schematic diagram for explaining a configuration including the air supply unit 100 of the heating cooker. FIG. 4 also shows a state where the heating chamber 2 is viewed from the left side, similarly to FIG. 4, the same components as those in FIG. 3 are denoted by the same reference numerals.

  Further, a plurality of air supply ports 50 which 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 an air supply passage 101. In addition, a cooling damper 52 is provided in the first cooling passage 102 that branches off from the vicinity of the air supply port 50 of the air supply passage 101. For example, the air supply fan 54 is a sirocco fan.

  Further, an infrared sensor unit 300 is arranged in a concave portion 110 provided in an upper portion 2 e of the heating chamber 2.

  The air supply fan 54 also serves as a cooling fan for cooling the circulation fan motor 56 (shown in FIG. 3) and the infrared sensor unit 300.

  A schematic diagram showing a configuration of the infrared sensor unit 300 is shown in a lower circle portion of FIG. As shown in FIG. 4, the infrared sensor unit 300 includes a cylindrical holding member 301 which is attached to a concave portion 110 provided in an upper portion 2 e of the heating chamber 2 in a longitudinal direction and a horizontal direction, and the holding member 301. A substantially cylindrical movable member 302 rotatably supported within 301, and an infrared sensor motor 304 attached to one end on the front side of the holding member 301 and driving the movable member 302. The movable member 302 has a thermopile-type infrared sensor 303. A stepping motor is used as the infrared sensor motor 304.

  In this embodiment, the infrared sensor 303 uses an area sensor that detects the temperature of 64 areas of 8 × 8, but the infrared sensor is not limited to this, and may be a line sensor in which the sensor units are arranged in a straight line. Good.

  The infrared sensor unit 300 turns the detection surface 303 a (shown in FIG. 11) of the infrared sensor 303 toward the inside of the heating chamber 2 by rotating the substantially cylindrical movable member 302 by the infrared sensor motor 304. Then, an axis perpendicular to the detection surface 303a of the infrared sensor 303 is rotated within a predetermined angle range (for example, 20 degrees) along the left-right direction and the vertical plane of the main body casing 1. At this time, a sensor window 120 (shown in FIG. 13) is provided in the recess 110 provided in the upper part 2e of the heating chamber 2. The infrared sensor 303 detects the temperature in the heating chamber 2 through the sensor window 120.

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

  Next, 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, part of the air from the air supply fan 54 It is supplied to the circulation fan motor 56 (shown in FIG. 3) via the first cooling passage 102. Thus, the circulation fan motor 56 is cooled.

  Further, by closing the air supply damper 51, the second cooling passage 103 provided in the vicinity of the air supply damper 51 is opened, and the remaining air from the air supply fan 54 is disposed on the top surface side of the infrared sensor unit 300. Supplied to Thereby, the infrared sensor 303 is cooled.

  FIG. 5 is a perspective view of the cooking device in which the upper plate 1a covering the upper surface and both side surfaces of the main casing 1 (shown in FIG. 1) and the back plate (not shown) are removed and viewed obliquely from the rear and above. . 5, the same components as those in FIGS. 1 to 7 are denoted by the same reference numerals.

  As shown in FIG. 5, an air supply unit 100 is provided on the rear side and left side (right side in FIG. 5) of the heating cabinet 2. The air supply unit 100 includes an air supply fan 54 disposed 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 for heating. It has a first cooling passage 102 extending toward the circulation fan motor 56 located at the center of the rear upper portion of the refrigerator 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 right side (left side in FIG. 5) of the heating cabinet 2. The exhaust unit 200 has 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 upper right side (the left side in FIG. 5) of the exhaust unit 200. The exhaust damper motor 60 opens and closes an exhaust damper (not shown) provided at an upper portion in the exhaust unit 200.

  On an upper part 2 e of the heating chamber 2, a partition plate 111 for blocking cooling air flowing in a region of the infrared sensor unit 300 from flowing to the left side surface in the main body casing 1 is provided upright.

  6A and 6B are schematic diagrams for explaining the operation of the infrared sensor unit 300 of the cooking device.

  6A and 6B show a temperature detection range of the infrared sensor 303 (shown in FIG. 4) 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. 6A and 6B, an interior light 400 that illuminates the inside of the heating chamber 2 is arranged outside the right side portion 2c of the heating chamber 2.

  The temperature detection range shown in FIG. 6A is the left area on the cooking tray 91 when viewed from the front, and the temperature detection range shown in FIG. 6B is the right area on the cooking tray 91 when viewed from the front. By rotating the cylindrical movable member 302 (shown in FIG. 4) having the infrared sensor 303 by the infrared sensor motor 304 (shown in FIG. 4), the detection surface 303a (shown in FIG. 11) of the infrared sensor 303 is moved right and left. Shake in the direction.

  In this embodiment, the temperature detection range of the infrared sensor 303 is divided into two regions, that is, a left region shown in FIG. 6A and a right region shown in FIG. 6B, but may be divided into three or more regions. Good.

  FIG. 7 is a perspective view of the infrared sensor unit 300 of the heating cooker as viewed obliquely from above, and FIG. 8 is an exploded perspective view of the infrared sensor unit 300.

  As shown in FIGS. 7 and 8, the infrared sensor unit 300 has a base 311 having a semi-cylindrical portion 311a and a motor attachment portion 311b connected to one end of the semi-cylindrical portion 311a, and is attached substantially below the center of the base 311. A packing 310 made of a heat-resistant resin, a first movable cylinder portion 312 rotatably fitted to a semi-cylindrical portion 311 a of a base 311, a board attachment member 313 attached to the first movable cylinder portion 312, A substrate 314 attached to the substrate attachment member 313, an infrared sensor 303 mounted on the substrate 314, a second movable cylinder 315 attached to the first movable cylinder 312 so as to cover the infrared sensor 303, The semi-cylindrical portion 31 of the base 311 surrounds the one movable cylinder portion 312, the substrate mounting member 313, the substrate 314, the infrared sensor 303, and the second movable cylinder portion 315. Having a semi-cylindrical portion 316 which is attached to a, and a reinforcing bracket 317 mounted on the semi-cylindrical portion 316. The wiring 320 is connected to the substrate 314.

  The first movable cylinder 312, the substrate mounting member 313, the substrate 314, the infrared sensor 303, and the second movable cylinder 315 constitute a movable member 302 (shown in FIG. 4). The first movable cylinder portion 312 and the second movable cylinder portion 315 are made of heat-resistant and hydrophobic PPS (polyphenylene sulfide: polyphenylene sulfide).

  The base 311 and the semi-cylindrical part 316 constitute a holding member 301 (shown in FIG. 4). The base 311 and the semi-cylindrical part 316 are made of PPS.

  The first movable cylindrical portion 312 includes a semi-cylindrical portion 312a, a first annular portion 312b provided at one end of the semi-cylindrical portion 312a, a second annular portion 312c provided at the other end of the semi-cylindrical portion 312a, It has a boss 312d projecting outward in the axial direction of the two annular members 312c.

  A semicircular guide groove 311c is provided at one axial end of the semi-cylindrical portion 311a of the base 311 (on the side opposite to the motor mounting portion 311b). The guide groove 311c of the base 311 guides an annular protrusion (not shown) of the movable member 302, thereby restricting the movement of the movable member 302 in the holding member 301 in the axial direction. The movable member 302 is rotatably held in the holding member 301.

  The drive shaft 304a (shown in FIG. 12) of the infrared sensor motor 304 is connected to the boss 312d of the first movable cylinder 312. The movable member 302 is rotationally driven by the infrared sensor motor 304.

  The movable member 302 shown in FIG. 8 is in a state where the infrared sensor 303 faces outward, and when the movable member 302 rotates 180 degrees from this state, the infrared sensor 303 faces downward, that is, the heating chamber 2 side. become.

  9 shows a top view of the infrared sensor unit 300 with the infrared sensor 303 (shown in FIG. 8) facing the heating chamber 2 side, and FIG. 10 shows the infrared sensor 303 of the infrared sensor unit 300 with the heating chamber 2 side. FIG. 9 and 10, the same components as those in FIG. 8 are denoted by the same reference numerals.

  FIG. 11 is a bottom view of the infrared sensor unit 300 in a state where the infrared sensor 303 faces the heating chamber 2 side. 11, the same components as those in FIG. 8 are denoted by the same reference numerals. As shown in FIG. 11, the detection surface 303a of the infrared sensor 303 of the movable member 302 faces downward via the window 330 provided in the semi-cylindrical portion 311a of the base 311 constituting the holding member 301.

  FIG. 12 is a longitudinal sectional view taken along line XII-XII in FIG. 12, the same components as those in FIG. 8 are denoted by the same reference numerals.

  As shown in FIG. 12, the drive shaft 304a of the infrared sensor motor 304 is connected to the boss 312d of the first movable tubular portion 312. The detection surface 303a of the infrared sensor 303 is exposed through the window 330 and the packing 310 to the sensor window 120 (shown in FIG. 13) provided on the right side of the top surface of the lower heating chamber 2. are doing. The sensor window 120 is provided in the recess 110 of the upper part 2e of the heating chamber 2 shown in FIG.

  In addition, a hole 340 adjacent to the window 330 is provided on one side of the semi-cylindrical portion 311a of the base 311 in the axial direction of the window 330 (on the side of the infrared sensor motor 304). On the other hand, a hole 350 adjacent to the window 330 is provided on the other side in the axial direction of the window 330 of the semi-cylindrical portion 311a, and a hole 360 is provided outside the hole 350.

  FIG. 13 is a longitudinal sectional view taken along line XIII-XIII in FIG. 13, the same components as those in FIGS. 8 to 12 are denoted by the same reference numerals. As shown in FIG. 13, the detection surface 303 a of the infrared sensor 303 is exposed to the sensor window 120 provided on the upper portion 2 e of the lower heating chamber 2 via the window 330 and the packing 310.

  FIG. 14 is a longitudinal sectional view taken along line XIII-XIII in FIG. 12 with the infrared sensor 303 of the infrared sensor unit 300 facing outward. 14, the same components as those in FIG. 13 are denoted by the same reference numerals.

  FIG. 15 shows a control block diagram of the cooking device.

  As shown in FIG. 15, 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, a middle 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, air 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 Motor 304 and the like are connected. The magnetron 4 is an example of a microwave generator that generates a microwave for heating an object to be heated in the heating chamber 2.

  The infrared sensor 303 is a thermopile type infrared sensor having a detection surface 303a (shown in FIGS. 11 to 13), a sensor unit 303b, and a temperature detection unit 303c for detecting a reference point temperature of the sensor unit 303b. . The infrared sensor 303 compensates for the output of the sensor unit 303b based on the reference point temperature of the sensor unit 303b detected by the temperature detection unit 303c.

  The control device 80, based on signals from the operation panel 9, the humidity sensor 53, the internal temperature sensor 76, the water level sensor 75, the infrared sensor 303 (the sensor unit 303b, the temperature detection unit 303c), etc. Heater 21, lower heater 22, steam generation heater 73, circulation fan motor 56, exhaust fan motor 57, air supply fan motor 58, circulation damper motor 59, exhaust damper motor 60, air supply damper motor 61 , The cooling damper motor 62, the tube pump 25, the magnetron 4, the infrared sensor motor 304, and the like.

  The control device 80 includes a motor control unit 80a that drives the infrared sensor motor 304.

  In the heating cooker having the above-described configuration, for example, at the time of heating cooking using microwaves, the motor control unit 80a controls the infrared sensor motor 304 to drive the substantially cylindrical movable member 302 of the infrared sensor unit 300, thereby By changing the direction of the detection surface 303a of the sensor 303, a wide range of temperature in the heating chamber 2 is detected (see FIGS. 6A and 6B). At this time, the motor control unit 80a determines that the temperature of the infrared sensor motor 304 (in this embodiment, the temperature of the sensor unit 303b detected by the temperature detection unit 303c incorporated in the infrared sensor 303) is If the operation is outside the operating temperature range in which the operation is guaranteed, the temperature detection by the infrared sensor 303 performed for the operation control of the heating cooking is stopped, and the heating cooking is performed by using the humidity sensor 53, the temperature sensor 76 in the refrigerator, or the like. Control can be performed.

  Thus, according to the heating cooker, optimal motor control can be performed according to the temperature of the infrared sensor motor 304 that drives the infrared sensor 303.

  Further, it is not necessary to use a motor having a large rated torque that can guarantee the operation even at a high temperature as the infrared sensor motor 304, so that the cost can be reduced.

  Further, in the heating cooker, the motor control unit 80a stops the infrared sensor motor 304 when the operation of the infrared sensor motor 304 is out of the operating temperature range in which the operation of the infrared sensor 304 is guaranteed, so that the infrared sensor motor 304 It is possible to prevent damage and decrease in reliability of the infrared sensor motor 304.

  Further, since the infrared sensor motor 304 for driving the infrared sensor 303 is disposed near the infrared sensor 303 for simplification of the structure, the infrared sensor 303 and the infrared sensor motor 304 have the same surrounding environment, The temperatures will be approximately the same. For this reason, the temperature corresponding to the temperature of the infrared sensor motor 304 can be detected by using the temperature detecting unit 303c that detects the temperature of the sensor unit 303b built in the infrared sensor 303, and the temperature of the infrared sensor motor 304 can be detected. Therefore, the configuration can be simplified without newly adding a sensor for detecting the temperature.

  When the temperature of the infrared sensor motor 304 exceeds a preset upper limit temperature (100 ° C. in this embodiment), the infrared sensor motor 304 is stopped by the motor control unit 80a. 304 can be prevented from being damaged and the reliability of the infrared sensor motor 304 can be prevented from deteriorating.

  Thus, for example, at the start of heating using microwaves, the temperature of the infrared sensor motor 304 exceeds the upper limit temperature. 53, heating cooking can be continued using the in-chamber temperature sensor 76 and the like, and convenience is improved.

  Note that the infrared sensor motor 304 may be stopped by the motor control unit 80a, the heating and cooking may be stopped, and the color liquid crystal display unit 10 (shown in FIG. 1) may display an error indicating that the infrared sensor is abnormal.

  In the heating cooker according to the first embodiment, by employing a motor using a neodymium magnet as the infrared sensor motor 304, the torque can be suppressed to 100 ° C. and the motor can be driven.

  Also, for example, when a ferrite-based magnet whose torque is reduced at 80 ° C. or higher is used as the infrared sensor motor 304, a configuration in which the motor is not driven at 80 ° C. or higher enables low cost using a ferrite-based magnet. Motor can be used.

[Second embodiment]
The heating cooker according to the second embodiment of the present invention has the same configuration as the heating cooker according to the first embodiment except for the operation of the control device 80, and FIGS.

  In the heating cooker according to the second embodiment, the temperature of the infrared sensor motor 304 (in this embodiment, the temperature of the sensor unit 303b detected by the temperature detection unit 303c incorporated in the infrared sensor 303) is set to a preset upper limit. When the temperature (100 ° C. in this embodiment) is exceeded, the motor control unit 80a drives the infrared sensor motor 304 at a lower speed than normal, thereby preventing a decrease in the torque of the infrared sensor motor 304. In this embodiment, the infrared sensor motor 304 is driven at a predetermined rotation speed lower than usual.

  Therefore, even when the temperature of the infrared sensor motor 304 exceeds the preset upper limit temperature, the cooking direction is detected while changing the direction of the detection surface 303a of the infrared sensor 303 and detecting the temperature of a wide range in the heating chamber 2. Can be controlled.

  The cooking device of the second embodiment has the same effects as the cooking device of the first embodiment.

  In the cooking device according to the second embodiment, the correlation between the temperature of the infrared sensor motor 304 and the rotation speed for obtaining the normal torque is determined in advance by an experiment or the like, and the infrared sensor motor 304 The rotation speed of the infrared sensor motor 304 may be determined in a stepwise (or continuous) manner based on a table or a mathematical expression representing the correlation between the temperature and the rotation speed.

[Third embodiment]
FIG. 16 is a longitudinal sectional view showing a state in which the infrared sensor 303 of the infrared sensor unit 1300 of the heating cooker according to the third embodiment of the present invention faces the heating chamber 2, and FIG. 17 shows the infrared sensor 303 facing the outside. FIG. 3 shows a longitudinal sectional view of the state. The heating cooker according to the third embodiment has the same configuration as the heating cooker according to the first embodiment except for the infrared sensor unit 1300 and the control device 1080, and FIGS. 16 and 17, the same components as those in FIG. 8 are denoted by the same reference numerals.

  As shown in FIG. 16, the heating cooker includes a substantially cylindrical movable member 302 (see FIG. 16) having a built-in infrared sensor 303 by a holding member 301 (shown in FIG. 4) composed of a base 311 and a semi-cylindrical portion 316. 4), the detection surface 303a (shown in FIG. 11) of the infrared sensor 303 is directed toward the inside of the heating chamber 2 (shown in FIG. 4).

  A member 371 having a mirror surface facing the infrared sensor 303 is provided on the inner peripheral surface of the semi-cylindrical portion 316 of the holding member 301 on the side opposite to the heating chamber 2 with respect to the infrared sensor 303. Further, black members 372 and 372 are provided on the inner peripheral surface of the semi-cylindrical portion 316 at intervals on both sides in the circumferential direction with respect to the member 371 having a mirror surface. The member 371 having a mirror surface is formed on the inner peripheral surface of the semi-cylindrical portion 316 of the holding member 301 by metal plating or the like.

  In the infrared sensor unit 1300, the cylindrical movable member 302 having the infrared sensor 303 is rotated by the infrared sensor motor 304 to change the state facing the heating chamber 2 toward the outside illustrated in FIG. . In FIG. 17, the movable member 302 may be rotated clockwise or counterclockwise.

  At this time, the detection surface 303a of the infrared sensor 303 detects infrared light from the black member 372 and then detects infrared light from the member 371 having a mirror surface. Here, the infrared emissivity of the member 371 having a mirror surface with respect to the infrared emissivity of the black member 372 is preferably about 1/2.

  FIG. 18 shows a control block diagram of the heating cooker. As shown in FIG. 18, the heating cooker control device 1080 includes a motor control unit 1080a that drives the infrared sensor motor 304 and a motor operation determination that determines whether the infrared sensor motor 304 is operating normally. It has a portion 1080b.

  In the cooking device having the above configuration, the infrared sensor motor 304 is controlled by the motor control unit 1080a so as to detect each infrared ray emitted from a plurality of members having different infrared emissivities (the member 371 having a mirror surface and the black member 372). When driven, the motor operation determining unit 1080b determines whether or not the infrared sensor motor 304 is operating normally based on the detection result of the infrared sensor 303 at that time.

  Specifically, the detection surface 303a of the infrared sensor 303 is directed toward the member 371 having a mirror surface having a low infrared emissivity and the black member 372 having a high infrared emissivity, and the infrared light from the member having a mirror surface and the black member 372 are emitted from the black member 372. Infrared rays are detected by the infrared ray sensor 303. If the difference between the levels of the detected infrared rays is larger than a predetermined value, the direction of the detection surface 303a of the infrared ray sensor 303 is correctly changed, and the infrared ray sensor motor 304 operates normally. It is determined that there is.

  As in the past, in a heating cooker in which an infrared sensor is swung by a motor to scan the surface temperature of food, there is no means for determining a malfunction of the motor driving the infrared sensor, and even if the motor malfunctions, There was a problem that cooking was performed as it was.

  In contrast, according to the heating cooker of the third embodiment, the infrared sensor motor 304 has a simple configuration in which a plurality of members having different infrared emissivities are arranged at different positions around the infrared sensor 303. It is possible to accurately determine whether or not the operation is normal.

  Further, in the heating cooker, by providing a plurality of members having different infrared emissivities (the member 371 having a mirror surface and the black member 372) on the same member having the same temperature (the semi-cylindrical portion 316 of the holding member 301), The difference between the levels of infrared rays becomes clear, and more accurate judgment can be made.

  The cooking device according to the third embodiment has the same effects as the cooking device according to the first embodiment.

  In the third embodiment, the member 371 having a mirror surface and the black members 372 and 372 are provided on the inner peripheral surface of the semi-cylindrical portion 316 of the holding member 301. However, the arrangement of a plurality of members having different infrared emissivities is different from this. However, for example, at least one of a plurality of members having different infrared emissivities may be arranged on the reinforcing bracket 317 outside the holding member 301. In this case, infrared rays from the above-mentioned member arranged outside the holding member 301 are detected by the infrared sensor 303 through an opening provided in the holding member 301.

[Fourth embodiment]
FIGS. 19A and 19B are schematic views for explaining the operation of the infrared sensor unit 300 of the heating cooker according to the fourth embodiment of the present invention. The temperature detection range shown in FIG. 19A is the left area on the cooking tray 91 when viewed from the front, and the temperature detection range shown in FIG. 19B is the right area on the cooking tray 91 when viewed from the front.

  As shown in FIG. 19A, the cooking device according to the fourth embodiment has a recess provided on the upper portion 2e and on the left side of the heating chamber 2, similarly to the cooking device shown in FIGS. 6A and 6B of the first embodiment. An infrared sensor unit 300 is arranged at 110 (shown in FIGS. 4 and 5). Outside the right side portion 2c of the heating chamber 2, an interior light 400 for illuminating the inside of the heating chamber 2 via a window (not shown) is arranged.

  FIG. 20 is a control block diagram of the heating cooker. The control device 2080 of the heating cooker according to the fourth embodiment has a third embodiment except for a motor control unit 2080a and a motor operation determination unit 2080b. Has the same configuration as that of the heating cooker control device 1080, and the same components are denoted by the same reference numerals.

  The control device 2080, based on signals from the operation panel 9, the humidity sensor 53, the internal temperature sensor 76, the water level sensor 75, the infrared sensor 303 (the sensor unit 303b, the temperature detection unit 303c), etc. Heater 21, lower heater 22, steam generation heater 73, circulation fan motor 56, exhaust fan motor 57, air supply fan motor 58, circulation damper motor 59, exhaust damper motor 60, air supply damper motor 61 , The cooling damper motor 62, the tube pump 25, the magnetron 4, the infrared sensor motor 304, the interior light 400, and the like.

  The control device 2080 includes a motor control unit 2080a that drives the infrared sensor motor 304 and a motor operation determination unit 2080b that determines whether the infrared sensor motor 304 is operating normally.

  Here, by the motor control unit 2080a, the cylindrical movable member 302 (shown in FIG. 4) having the infrared sensor 303 is rotated by the infrared sensor motor 304 so that the detection surface 303a of the infrared sensor 303 (see FIG. 11). (Shown) in the horizontal direction. As a result, the infrared light emitted from the interior light 400 is detected by the infrared sensor 303.

  Based on the detection result of the infrared sensor 303 when the infrared sensor motor 304 is driven so as to detect the infrared light emitted from the interior lamp 400, it is determined whether the infrared sensor motor 304 is operating normally. The operation is determined by the operation determining unit 2080b. Here, as shown in FIG. 19A, the detection surface 303a of the infrared sensor 303 is directed to the direction in which the infrared light from the interior lamp 400 does not enter, while the detection surface 303a of the infrared sensor 303 is set in the interior as shown in FIG. 19B. The infrared rays are detected toward the lamp 400, and if the difference between the levels of the detected infrared rays is larger than a predetermined value, the direction of the detection surface 303a of the infrared sensor 303 is correctly changed, and the infrared sensor motor 304 Is determined to be operating normally.

  As in the past, in a heating cooker in which an infrared sensor is swung by a motor to scan the surface temperature of food, there is no means for determining a malfunction of the motor driving the infrared sensor, and even if the motor malfunctions, There was a problem that cooking was performed as it was.

  On the other hand, according to the heating cooker of the fourth embodiment, the control device 2080 can determine whether the functions of the infrared sensor 303, the infrared sensor motor 304, and the like are normal.

  The cooking device according to the fourth embodiment has the same effects as the cooking device according to the first embodiment.

[Fifth Embodiment]
FIGS. 21A and 21B are schematic views for explaining the operation of the infrared sensor unit 300 of the heating cooker according to the fifth embodiment of the present invention. The heating cooker of the fifth embodiment has the same configuration as the control device 1080 of the heating cooker of the fourth embodiment except for the position of the infrared sensor unit 300, and the same reference numerals denote the same components. It is attached.

  As shown in FIGS. 21A and 21B, the infrared sensor unit 300 is disposed at a position on the left side 2 b of the heating chamber 2 facing the interior light 400. The infrared sensor unit 300 detects the temperature of the object to be heated on the cooking tray 91 placed on the lower stage in the heating chamber 2.

  In the cooking device of the fifth embodiment, similarly to the cooking device of the fourth embodiment, a cylindrical movable member having an infrared sensor 303 by a motor 304 for an infrared sensor by a motor control unit 2080a (shown in FIG. 20). By rotating the member 302 (shown in FIG. 4), the detection surface 303a (shown in FIG. 11) of the infrared sensor 303 is swung right and left. As a result, the infrared light emitted from the interior light 400 is detected by the infrared sensor 303.

  In the cooking device having the above configuration, the infrared sensor motor 304 operates normally based on the detection result of the infrared sensor 303 when the infrared sensor motor 304 is driven so as to detect the infrared light emitted from the interior lamp 400. It is determined by the motor operation determination unit 2080b (shown in FIG. 20) whether the operation is performed. Here, as shown in FIG. 21A, the detection surface 303a of the infrared sensor 303 is turned in a direction in which the infrared light from the interior lamp 400 does not enter, while the detection surface 303a of the infrared sensor 303 is placed in the interior as shown in FIG. 21B. The infrared rays are detected toward the lamp 400, and if the difference between the levels of the detected infrared rays is larger than a predetermined value, the direction of the detection surface 303a of the infrared sensor 303 is correctly changed, and the infrared sensor motor 304 Is determined to be operating normally.

  According to the heating cooker, the control device 2080 (shown in FIG. 20) can determine whether the functions of the infrared sensor 303, the infrared sensor motor 304, and the like are normal.

  The heating cooker according to the fifth embodiment has the same effects as the heating cooker according to the first embodiment.

  In the fourth and fifth embodiments, the interior light 400 is turned on and off when the detection surface 303a of the infrared sensor 303 is directed toward the interior light 400, and the presence or absence of infrared light from the interior light 400 is checked. Is also good. Thereby, the operation of the infrared sensor motor 304 can be determined more accurately.

  In the fourth and fifth embodiments, the infrared sensor 303 uses an area sensor that detects the temperature of 64 areas of 8 × 8, but the present invention is applied to a heating cooker using a monocular infrared sensor. May be applied. In this case, as the direction of the detection surface of the infrared sensor driven by the motor changes, the level of the infrared light detected by the infrared sensor peaks at the position of the interior light. The operation of the motor that drives the infrared sensor can be determined based on the change in the infrared level that reaches the peak.

  In the first to fifth embodiments, the temperature corresponding to the temperature of the infrared sensor motor 304 is detected by using the temperature detection unit 303c that detects the temperature of the sensor unit 303b built in the infrared sensor 303. However, the present invention is not limited to this, and a sensor for detecting the temperature of the motor that drives the infrared sensor may be separately provided.

  In the first to fifth embodiments, the motor control is performed according to the temperature of the infrared sensor motor 304. However, the motor may be controlled based on the ambient temperature of the motor that drives the infrared sensor.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the above-described first to fifth embodiments, and can be implemented with various modifications within the scope of the present invention. For example, an embodiment in which the contents described in the first to fifth embodiments are appropriately combined may be adopted as one embodiment of the present invention.

  The present invention and embodiments are summarized as follows.

The cooking device of the present invention
Heating chamber 2,
An infrared sensor 303 for detecting the temperature of the object to be heated housed in the heating chamber 2,
A motor 304 that drives the infrared sensor 303 to change the direction of the detection surface of the infrared sensor 303;
Motor control units 80a, 1080a and 2080a for controlling the motor 304 based on the temperature or the ambient temperature of the motor 304 are provided.

  According to the above configuration, the temperature of a wide range in the heating chamber 2 is detected by controlling the motor 304 by the motor control units 80a, 1080a, and 2080a at the time of heating cooking and changing the direction of the detection surface of the infrared sensor 303. . At this time, when the temperature (or the ambient temperature) of the motor 304 deviates from the operating temperature range in which the operation of the motor 304 is guaranteed, the motor control units 80a, 1080a, 2080a By stopping the temperature detection by the infrared sensor 303 to be performed, it is possible to control the heating and cooking using another means such as a humidity sensor or a temperature sensor in the refrigerator. Thus, optimal motor control can be performed according to the temperature (or the ambient temperature) of the motor 304 that drives the infrared sensor 303.

Also, in the heating cooker of one embodiment,
The infrared sensor 303 has a sensor unit 303b and a temperature detection unit 303c that detects the temperature of the sensor unit 303b.
The motor control units 80a, 1080a, and 2080a determine the temperature of the sensor unit 303b detected by the temperature detection unit 303c of the infrared sensor 303 as the temperature of the motor 304 or the ambient temperature, based on the temperature of the sensor unit 303b. To control the motor 304.

  According to the above-described embodiment, the motor 304 for driving the infrared sensor 303 is disposed near the infrared sensor 303 to simplify the structure. In such a case, the infrared sensor 303 and the motor 304 are similar to each other. The surrounding environment, that is, the temperature becomes substantially the same. Therefore, the temperature corresponding to the temperature of the motor 304 (or the ambient temperature) can be detected by using the temperature detecting unit 303c for detecting the temperature of the sensor unit 303b built in the infrared sensor 303, and the temperature of the motor 304 can be detected. The configuration can be simplified without newly adding a sensor for detecting the temperature (or the ambient temperature).

Also, in the heating cooker of one embodiment,
The motor control units 80a, 1080a, 2080a stop the motor 304 when the temperature of the motor 304 or the ambient temperature exceeds a preset upper limit temperature.

  According to the above embodiment, when the temperature (or the ambient temperature) of the motor 304 exceeds the preset upper limit temperature, the motor 304 is stopped by the motor control units 80a, 1080a, 2080a, so that the motor 304 is damaged. Or the reliability of the motor 304 is prevented from being reduced.

Also, in the heating cooker of one embodiment,
The motor control units 80a, 1080a, and 2080a control the motor 304 so as to drive the motor 304 at a lower speed than normal when the temperature of the motor 304 or the ambient temperature exceeds a preset upper limit temperature. .

  According to the above-described embodiment, by using the motor that drives the infrared sensor 303 at a lower speed than normal and does not decrease the torque, the temperature (or the ambient temperature) of the motor 304 exceeds the preset upper limit temperature. In this case, the motor control units 80a, 1080a, and 2080a drive the motor 304 at a lower speed than normal, thereby preventing a decrease in the torque of the motor 304. Therefore, even when the temperature of the motor 304 (or the ambient temperature) exceeds a preset upper limit temperature, the cooking is performed while changing the direction of the detection surface of the infrared sensor 303 to detect a wide range of temperature in the heating chamber 2. Can be controlled.

Also, in the heating cooker of one embodiment,
A plurality of members 371 and 372 having different infrared emissivities arranged at different positions around the infrared sensor 303 driven by the motor 304;
The motor control unit 1080a drives the motor 304 so that the infrared sensor 303 detects each infrared ray emitted from the plurality of members 371 and 372 having different infrared emissivities. A motor operation determining unit 1080b that determines whether the motor 304 is operating normally based on the detection result of 303.

  According to the above-described embodiment, the motor 304 is driven by the motor control unit 1080a so as to detect the respective infrared rays emitted from the plurality of members 371 and 372 having different infrared emissivities, and the detection of the infrared sensor 303 at that time is performed. Based on the result, the motor operation determination unit 1080b determines whether the motor 304 is operating normally. For example, the detection surface of the infrared sensor 303 is directed toward the mirror member 371 having a low infrared emissivity and the black member 372 having a high infrared emissivity, and the infrared light from the mirror member 371 and the infrared light from the black member 372 are provided. Is detected by the infrared sensor 303. If the difference between the levels of the detected infrared rays is larger than a predetermined value, it is determined that the direction of the detection surface of the infrared sensor 303 has been correctly changed and the motor 304 is operating normally. It becomes possible.

Also, in the heating cooker of one embodiment,
An interior light 400 for illuminating the inside of the heating oven 2,
Whether the motor 304 operates normally based on the detection result of the infrared sensor 303 when the motor 304 is driven by the motor control unit 2080a to detect the infrared light emitted from the interior light 400 And a motor operation determining unit 2080b for determining whether or not the motor operation has been performed.

  According to the above embodiment, whether the motor 304 is operating normally is determined based on the detection result of the infrared sensor 303 when the motor 304 is driven to detect the infrared light emitted from the interior lamp 400. The operation is determined by the operation determining unit 2080b. For example, while the detection surface of the infrared sensor 303 is directed to a direction in which the infrared light from the interior light 400 does not enter, the detection surface of the infrared sensor 303 is directed to the interior light 400 to detect each infrared light, and detect the level of each infrared light. If the difference is larger than the predetermined value, it is possible to determine that the direction of the detection surface of the infrared sensor 303 has been correctly changed and the motor 304 is operating normally.

DESCRIPTION OF SYMBOLS 1 ... Main body casing 2 ... Heating cabinet 2a ... Opening 3 ... Door 5 ... Exhaust duct 6 ... Dew receptor 7 ... Outer glass 8 ... Handle 9 ... Operation panel 10 ... Color liquid crystal display 11 ... Button group 12 ... Key 13 ... Start Key 14 ... Infrared light receiving unit 15 ... Heating object 18 ... Circulation duct 19 ... Circulation fan 20 ... Upper heater 21 ... Middle heater 22 ... Lower heater 23 ... Circulation damper 25 ... Tube pump 26 ... Water supply tank 27 ... Suction port 28 Outlet 29 ... First rear outlet 30 ... Second rear outlet 31 ... Third rear outlet 35 ... Steam tube 36 ... Steam pipe 37 ... Steam supply port 40 ... Supply / drain tube 41 ... Supply tank body 42 ... Communication pipe 43 ... Tank cover 44 ... Tank joint part 45 ... Natural exhaust port 47 ... Exhaust fan 50 ... Air supply port 51 ... Air supply damper 52 ... Cooling damper 54 ... Air supply fan 55 ... Front plate 56 ... Circulation fan Motor 60 ... exhaust damper motor 70 ... steam generator 71 ... steam generator 72 ... lid 73 ... heater 75 for steam generation ... water level sensor 76 ... internal temperature sensors 80, 1080, 2080 ... controllers 80a, 1080a, 2080a ... Motor control units 1080b, 2080b ... Motor operation determination unit 91 ... Cooking tray 92 ... Cooking tray 100 ... Air supply unit 101 ... Air supply passage 102 ... First cooling passage 103 ... Second cooling passage 110 ... Recession 111 ... Partition plate 120 sensor window section 200 exhaust unit 204 fourth air passage 210 housing 220 exhaust unit covers 300 and 1300 infrared sensor unit 301 holding member 302 movable member 303 infrared sensor 303a detection surface 303b sensor Section 303c temperature detecting section 304 infrared sensor motor 310 Kin 311 Base 312 First movable cylinder 312d Boss 313 Substrate mounting member 314 Substrate 315 Second movable cylinder 316 Semi-cylindrical part 317 Reinforcing bracket 320 Wiring 330 Window 340, 350, 360 ... Holes 371. Mirror-like member 372. Black member 400.

Claims (5)

A heating cabinet,
An infrared sensor for detecting the temperature of the object to be heated housed in the heating chamber,
A motor that drives the infrared sensor to change the direction of the detection surface of the infrared sensor,
A motor control unit that controls the motor based on the temperature or the ambient temperature of the motor ,
An interior light for illuminating the inside of the heating oven,
The motor control unit determines whether the motor is operating normally based on a detection result of the infrared sensor when the motor is driven so as to detect infrared rays emitted from the interior lamp. A heating cooker comprising: a motor operation determining unit . The cooking device according to claim 1,
The infrared sensor has a sensor unit and a temperature detection unit that detects the temperature of the sensor unit,
The motor control unit controls the motor based on the temperature of the sensor unit, using the temperature of the sensor unit detected by the temperature detection unit of the infrared sensor as the temperature of the motor or the ambient temperature. Heating cooker. The cooking device according to claim 1 or 2,
The heating cooker, wherein the motor control unit stops the motor when a temperature of the motor or an ambient temperature exceeds a preset upper limit temperature. The cooking device according to claim 1 or 2,
The heating cooker, wherein, when the temperature or the ambient temperature of the motor exceeds a preset upper limit temperature, the motor control unit controls the motor to drive the motor at a lower speed than normal. . The cooking device according to any one of claims 1 to 4,
A plurality of members with different infrared emissivity arranged at different positions around the infrared sensor driven by the motor,
As the infrared sensor detects each infrared ray emitted from a plurality of members having different infrared emissivities, the motor is driven by the motor control unit based on the detection result of the infrared sensor at that time. And a motor operation determining unit that determines whether the motor is operating normally.