JP2015094507A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating device which cools electrical components efficiently.SOLUTION: A heating cooker includes: a machine chamber 20 which is provided below a heating chamber 28 of a body 1 and in which components necessary for heating a heating object are arranged; a fan device 15 which is provided at one end side of left and right in the width direction of the machine chamber 20 and which blows cooling air; and a rear plate 10 which continues to a depth surface 20a of the machine chamber 20 and which forms a rear surface of the body 1. At the fan device 15, an outlet 15v for blowing air toward the rear plate 10 direction, and an outlet 15u for blowing air to the width direction of the machine chamber 20 are provided. At the rear plate 10, a rear plate exhaust hole 10a for passing the cooling air blown in the rear plate 10 direction from the fan device 15 and a rear plate exhaust hole 10b for passing the cooling air blown in the width direction of the machine chamber 20 on the laterally opposite side from the rear plate exhaust hole 10a are provided. At the outside of the rear plate 10, a substantially U-shaped cover 100 is provided which covers two rear plate exhaust holes 10c in a communicating manner, and which has a cover vent hole 101 for exhausting cooling air blown from the rear plate exhaust hole 10c.

Description

  The present invention relates to a cooking device that cools the inside.

  The microwave oven shown in Patent Document 1 sucks cooling air from below the microwave oven, and exhausts the waste heat after cooling below the microwave oven.

Japanese Patent Laid-Open No. 9-273759

  Therefore, in the microwave oven of patent document 1, there is a problem that the waste heat exhausted downward is re-intaken from the bottom intake port and cooling efficiency is lowered.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In claim 1, a heating chamber for placing an object to be heated in a main body, and a heating chamber provided below the heating chamber for heating the object to be heated. A machine room in which necessary parts are arranged; a fan device that is provided on one of the left and right sides of the machine room in the width direction; and that blows cooling air to the parts; and a rear surface of the main body that is connected to the back surface of the machine room. A rear plate that is formed, and the fan device is provided with a blow-out port that blows air in the direction of the rear plate and a blow-out port that blows air in the width direction of the machine room. A rear plate exhaust hole through which cooling air blown in the rear plate direction is passed, and a rear plate exhaust hole through which cooling air blown in the width direction of the machine room is passed on the opposite side of the rear plate exhaust hole, and the rear plate The two rear plate exhaust holes are communicated and covered on the outside, and air is blown from the rear plate exhaust holes. The cooling air with a cover of substantially U of shaped having a cover vent for exhausting.

  According to the present invention, there is an effect that an electrical component can be efficiently cooled.

The perspective view which looked at the main part of the cooking-by-heating machine of one example from the front side. The perspective view which looked at the main part of the heating cooker from the back side. AA sectional drawing of FIG. The perspective view which looked at the state which removed the outer frame from the main body of the heating cooker of one Example from the front side. The bottom view of the main body of the heating cooker. The perspective view which looked at the main body which removed the cover of the heating cooker from the back side. The rear view of FIG. The perspective view which looked at the machine room of the cooking-by-heating machine of one example from the front side. The block diagram showing the control means of the heating cooker.

  Hereinafter, the specific contents of the present invention will be described in detail with reference to FIGS. 1 to 9 described above.

  1-4, the main body 1 of the heating cooker puts an object to be heated in a heating chamber 28, and cooks the object to be heated using the heat of a microwave, a heater, or steam. The door 2 opens and closes in order to put an object to be heated in and out of the heating chamber 28. By closing the door 2, the heating chamber 28 is hermetically sealed to leak microwaves used when heating the object to be heated. It is possible to prevent heat, contain heat, and heat efficiently. The handle 9 is attached to the door 2 and facilitates opening and closing of the door 2, and has a shape that can be easily grasped by a hand. The glass window 3 is attached to the door 2 so that the state of food being cooked can be confirmed, and uses glass that can withstand high temperatures due to heat generated by a heater or the like. A list of menu names and numbers for selecting a menu by number is displayed below the glass window 3 of the door 2.

  The input means 71 is provided on the operation panel 4 below the front surface of the door 2, and is a range heating means 77 (FIG. 9) that heats an object to be heated with microwaves, and a heater provided on the heating chamber upper surface 28 e of the heating chamber 28. A hot air unit 11 comprising a grill heating means 12 for heating an object to be heated, a water vapor generating means 43 for heating the object to be heated with water vapor, an upper hot air heater 14a and a lower hot air heater 14b provided above and below the inner wall 28b of the heating chamber. A heating means such as an oven heating means for heating the heating chamber 28 with hot air is selected, and an operation unit 6 for inputting cooking conditions such as a heating time and an automatic menu, and contents inputted from the operation unit 6 and cooking And a display unit 5 for displaying the progress state.

  The operation panel 4 of the door 2 has a liquid crystal display as a display unit 5 and a bakery key and a start key as an operation unit 6 at a substantially central position. The user selects a menu number with the operation unit 6 while looking at the display unit 5 and presses a start key to start cooking.

  The water tank 42 is a container for storing water necessary for producing water vapor. The water tank 42 is provided on the lower front side of the main body 1 and can be attached and detached from the front surface of the main body 1 to facilitate water supply and drainage. It can be done.

  The outer frame 7 is a cabinet that covers the upper surface and the left and right side surfaces of the main body 1 of the heating cooker. The rear plate 10 is connected to a back surface 20a of the machine room 20 to be described later and forms the rear surface of the cabinet described above. An external exhaust duct 18 is attached to the upper portion of the rear plate 10, and an inner side to which the external exhaust duct 18 is attached An exhaust hole 36 is provided for discharging the steam discharged from the heated object and the cooling air (waste heat) 39 after cooling the components inside the main body 1.

  The external exhaust duct 18 discharges the cooling air 39 that has passed through the exhaust hole 36 to the outside of the main body 1. Exhaust air is discharged from the external exhaust port 8 of the external exhaust duct 18, and the exhaust discharge direction is the main body 1. The air is exhausted to the upper side and to the front side. The exhaust direction is directed upward and toward the front side, so that the wall surface is not contaminated by the exhaust even when the rear surface is brought close to the wall surface.

  The machine chamber 20 is provided below the heating chamber 28 in a space between the heating chamber bottom surface 28 a and the bottom plate 21 of the main body 1, and has components necessary for heating the object to be heated. Details of the machine room 20 will be described later.

  The bottom surface 28a of the heating chamber has a substantially central recess recessed to form a gap 70. The rotating antenna 26 is installed in the gap 70, and the microwave radiated from the magnetron 33 is a waveguide 47, It flows into the lower surface of the rotating antenna 26 through a coupling hole 47 a through which the output shaft 46 a of the rotating antenna driving means 46 passes, and is diffused by the rotating antenna 26 and radiated into the heating chamber 28. The rotating antenna 26 is connected to the output shaft 46 a of the rotating antenna driving means 46.

  The gap 70 provided with the rotating antenna 26 is provided near the center of the heating chamber 28, and the heating chamber bottom surface 28a is drawn so that the rotating antenna 26 does not protrude from the heating chamber bottom surface 28a. The depth and shape (round or square) to be drawn vary depending on the size of the rotating antenna 26, the microwave conditions, and the like. It is determined mainly by experiments. In this embodiment, a quadrangular shape is used.

  A partition plate 72 separates the gap 70 and the heating chamber 28. The partition plate 72 is provided to prevent the rotating antenna 26 from being touched when the user removes the table plate 24 described later for cleaning. This is because when the user touches the rotating antenna 26 and deforms it, the operation of the microwave is abnormal and the performance is greatly affected.

  The cooling means 501 (FIG. 9) includes a fan device 15 in which a fan is connected to a cooling motor attached to the bottom plate 21 of the machine room 20, and a fan 15 a (FIG. 8) disposed at the rear of the magnetron 33. The cooling air 39 blown by the means 501 is a self-heating magnetron 33 in the machine room 20, the inverter board 22, the weight detecting means 25, the stirring drive shaft 53 (FIG. 8), the stirring motor 54 (FIG. 8), etc. The components are cooled to heat the object to be heated, and flow between the outside of the heating chamber 28 and the outer frame 7 and between the hot air case 11a and the rear plate 10, while cooling the outer frame 7 and the rear plate 10. It passes through the exhaust hole 36 and is discharged from the external exhaust port 8 of the external exhaust duct 18.

  The hot air unit 11 is attached to the rear part of the heating chamber 28, the hot air unit 11 is provided with a hot air case 11a on the rear side of the heating chamber inner wall surface 28b, and the hot air fan 32 is provided between the heating chamber inner wall surface 28b and the hot air case 11a. Hot air heaters 14a and 14b are provided so as to be located on the outer peripheral side. A hot air motor 13 is attached to the rear side of the hot air case 11a, the motor shaft is connected through a hole provided in the hot air case 11a, and the blades of the hot air fan 32 are rotated to circulate the air.

  And the hot air unit 11 is connected through the hot air intake hole 31 and the hot air blowing hole 30 which are air passages provided in the heating chamber inner wall surface 28b, and the hot air fan 32 in the hot air case 11a is rotated by the hot air motor 13, Air in the heating chamber 28 and the hot air unit 11 is circulated, and the air circulating in the upper hot air heater 14a and the lower hot air heater 14b is heated to become hot air.

  A grill heating means 12 made of a heater is attached to the outside of the heating chamber upper surface 28e. The grill heating means 12 winds a heater wire around a mica plate to form a flat surface, presses and fixes the mica plate to the outside of the heating chamber upper surface 28e, heats the heating chamber upper surface 28e, and radiates heat to an object to be heated in the heating chamber 28 It is something to bake.

  The heating chamber bottom surface 28a is provided with a plurality of weight detection means 25, for example, a right weight sensor 25a, a left weight sensor 25b on the front left and right, and a back weight sensor 25c on the rear center, and a square shape on the right weight sensor 25a. A table plate 24 to be described later is placed.

  The weight information of the object to be heated placed on the table plate 24 is detected by the support member 75 of the weight detection means 25, and this information is sent to the control means 151 (FIG. 9).

  The calculation process may be to obtain the sum of the weight information of the weight detection means 25. Furthermore, the placement position of the object to be heated on the table plate 24 can be obtained from the weight ratio of the three weight detection means 25.

  Based on the weight information and position information of these heated objects, the control means 151 (FIG. 9) controls the heating of the heated objects. For controlling the heating, for example, the microwave irradiation time and output control of the magnetron 33 based on the weight information of the object to be heated, and the rotation control of the rotating antenna 26 based on the position information of the object to be heated are controlled.

  A turntableless table plate 24 on which an object to be heated is placed is placed on the bottom of the heating chamber 28.

  The table plate 24 has a structure that can be easily detached from the heating chamber bottom surface 28a. For this reason, it becomes possible to easily wash and clean the dirt and the like adhering when the object to be heated is heated. Moreover, the table plate 24 is removed in the cooking of bread making described later.

  Above the rear part of the heating chamber 28, temperature detection means 85 for detecting the temperature in the heating chamber 28 is provided. The temperature detecting means 85 is provided at a position where it is not directly affected by the hot air blown into the heating chamber 28 from the hot air blowing holes 30 of the grill heating means 12 and the hot air unit 11.

  The steam unit 43a (FIG. 9) includes a water vapor generating means 43 and a pump means 87.

  The water vapor generating means 43 is attached to the outer side surface of the left side surface 28c of the heating chamber, and the steam outlet 44 from which water vapor is ejected faces the heating chamber 28.

  Further, the water vapor generating means 43 is made of aluminum, and a sheathed heater as a boiler heating means 89 (FIG. 9) is embedded so as to be integrated at the time of casting. The power consumption of the heater is as large as around 600 W, and the steam generating means 43 can heat the water to a temperature at which it can be boiled in a short time.

  The water supply to the water vapor generating means 43 is supplied from the water tank 42 to the pump means 87 through the pipe 45 by driving the pump means 87, supplied to the water vapor generating means 43 through the pipe 40, and the water vapor generating means 43. Is heated and boiled, and becomes steam, and is ejected from the steam ejection port 44 to the heating chamber 28.

  The temperature detection means b88 (FIG. 9) detects the temperature of the water vapor generation means 43, transmits the detection result to the control means 151 (FIG. 9) described later, and controls the boiler heating means 89 and the pump means 87.

  The pump means 87 pumps the water in the water tank 42 to the water vapor generating means 43, and is composed of a pump and a motor that drives the pump. The adjustment of the amount of water supplied to the water vapor generating means 43 is determined by the ON / OFF ratio of the power supplied to the motor.

  The structure provided outside the rear plate 10 in FIGS. 2, 3, and 5 to 8 will be described.

  In FIG. 2, a substantially U-shaped cover 100 is attached to the outside of the rear plate 10. As shown in FIGS. 2 and 3, the cover 100 fixes the outer periphery 102 of the cover 100 to the rear plate 10 from the side with a plurality of screws 103.

  In FIG. 5, punching disposed on the bottom plate 100b of the cover 100 on the rear plate exhaust hole b10b (FIG. 6) described later side of the rear plate 10 in a range of approximately half or more with the cover 100 attached to the rear plate 10. A hole-shaped cover vent 101 is provided, and the cover vent 101 serves as an exhaust port from the cover 100 to the outside of the main body 1.

  6 and 7, the rear plate 10 is provided with a rear plate exhaust hole 10c at a position covered with the cover 100 from the side. The rear plate exhaust hole 10c is located at a position substantially opposite to the left and right rear plate exhaust holes a10a provided on the fan device 15 (FIG. 8) side (right rear portion) provided in the machine room 20 and the rear plate exhaust hole a10a of the rear plate 10. Is a rear plate exhaust hole b10b. The rear plate exhaust hole 10 c is a hole that communicates mainly between the machine room 20 that is the inner side of the main body 1 constituted by the rear plate 10, the outer frame 7, and the bottom plate 21 and the outer side of the rear plate 10. is there.

  The rear plate exhaust hole a10a has a larger area than the rear plate exhaust hole b10b. Then, the rear plate exhaust hole a10a is provided in the immediate vicinity of the fan device 15 in the machine room 20 to supply the cooling air 39h, and the rear plate exhaust hole b10b is supplied with the cooling air 39 from the fan device 15 flowing to the left inside the machine chamber 20. The cooling air 39k is provided at a position where it is supplied.

  6 and 7, the electric component 205 is fixed at a position covered by the cover 100 of the rear plate 10.

  The electrical component 205 is a capacitor 202 that is disposed between the rear plate exhaust hole 10c (the rear plate exhaust hole a10a and the rear plate exhaust hole b10b) and is fixed by the fixture 203, and the substrate 200 that is fixed by the substrate fixture 201. . The capacitor 202 is disposed on the rear plate exhaust hole a10a side, and the substrate 200 is disposed on the rear plate exhaust hole b10b side. Further, on the substrate 200, a capacitor portion 206 is disposed on the rear plate exhaust hole a10a side, and a coil portion 204 is disposed on the rear plate exhaust hole b10b side. The capacitor 202 and the capacitor portion 206 are low heat resistant components 207 having a low heat resistant temperature, and the coil portion 204 is a high heat resistant temperature component 208 having a high heat resistant temperature. Therefore, the low heat-resistant component 207 is arranged on the rear plate exhaust hole a10a side which is the fan device 15 side, and the high heat-resistant component 208 is arranged on the rear plate exhaust hole b10b side.

  2, 5, and 8, the machine room 20 is provided with a magnetron 33 for heating food on the bottom plate 21 on the left front side, and a fan 15 a dedicated to cooling the magnetron 33 is disposed on the rear side of the magnetron 33. doing. The fan 15a draws in air wW from the lower intake hole b21b of the bottom plate 21, the rear side serving as the intake side of the fan 15a is covered with a duct 38, and a communication port 38a is provided on the right side of the duct 38. The fan 15a sucks air from the lower side of the bottom plate 21 and the communication port 38a. An inverter board 22 is disposed substantially at the center on the left side of the fan 15a. A control board 23 is arranged on the rear side of the inverter board 22, and the control board 23 is surrounded by a duct k230.

  A fan device 15 is provided at the right rear part. The fan device 15 sucks air B from the lower intake hole a21a of the bottom plate 21, and the fan device 15 cools the entire main body 1 together with components arranged in the machine room 20 and communicates with the duct k230.

  Further, the fan device 15 is provided with a plurality of outlets 15s for flowing cooling air toward components that require cooling, and the outlet 15s is provided with a guide 15t for controlling the direction in which the cooling air flows. The outlet 15v is directed toward the rear plate exhaust hole a10a provided in the rear plate 10, one of the outlets 15u is provided on the inverter board 22, and one of the outlets 15u is provided toward the duct k230. .

  And the fan 15a provided with the duct 38 which cools the magnetron 33 is arrange | positioned in the position which opposes the blower outlet 15u on both sides of the inverter board | substrate 22. FIG. Although not shown, the inverter board 22 may be provided with a U-shaped duct surrounding the upper surface and the front and rear sides.

  For this purpose, the fan device 15 sucks low-temperature air sucked from the lower surface of the bottom plate 21 and sends it directly to the inverter board 22 from the blowout port 15u. Similarly, the fan 15a having the duct 38 for sending cooling air to the magnetron 33 also cools the low temperature air sucked from the lower surface of the bottom plate 21 and the inverter board 22 sucked from the communication port 38a provided in the duct 38. The air whose temperature has increased later is mixed and blown to the magnetron 33.

  A bread making mechanism such as a stirring drive shaft 53, a stirring motor 54, and a speed reduction means 55 is disposed on the front side of the fan device 15.

  Operation | movement of the system of a heating cooker is demonstrated using FIGS. 1-4, FIG. 8, FIG.

  The power source 76 is for operating the main body 1 of the cooking device. The hot air fan 32 includes a hot air motor 13 on the rear side of the hot air case 11a provided outside the heating chamber inner wall surface 28b including the hot air intake hole 31 and the hot air blowing hole 30, and the hot air fan passes through the motor shaft through the motor shaft. 32 is rotated. A hot air heater upper 14 a and a hot air heater lower 14 b are provided on the outer peripheral side of the hot air fan 32. The hot air unit 11 operates the hot air fan 32 and the hot air heater 14 to circulate and supply hot air. Naturally, when only the hot air fan 32 is operated without operating the hot air heater 14, cold air is circulated in the heating chamber 28.

  The range heating means 77 is an inverter board 22 on which an inverter circuit that creates a power source for driving the magnetron 33 and the magnetron 33 is mounted. The inverter circuit creates a power supply corresponding to the heating power input from the input means 71 and supplies it to the magnetron 33.

  The grill heating means 12 is composed of a heater provided on the back side of the top surface of the heating chamber 28, and heats the heating chamber upper surface 28 e of the heating chamber 28 to burn the object to be heated in the heating chamber 28 by radiant heat.

  The cooling means 501 is a fan device 15 in which a fan is connected to a cooling motor attached to the bottom plate 21 and a fan 15a disposed at the rear of the magnetron 33. The cooling air 39 blown by the cooling means 50 is a machine room. The magnetron 33, the inverter board 22, the weight detection means 25, the stirring drive shaft 53, the stirring motor 54, etc., which self-heats in 20 are cooled.

  The rotating antenna driving means 46 is a motor for driving the rotating antenna 26, and a synchronous motor and a gear for reducing the rotational speed are integrated.

  The weight detection means 25 measures the weight of the object to be heated placed on the table plate 24.

  The temperature detecting means 85 is attached to the heating chamber 28, detects the temperature in the heating chamber 28, adjusts the electric power of the grill heating means 12 and the hot air heater 14 of the hot air unit 11 by the control means 151, and in the bread making process. It operates to adjust the environment.

  The steam unit 43 a is composed of water vapor generating means 43 and pump means 87.

  The water vapor generating means 43 comprises a boiler heating means 89 comprising a heater for heating water, and a temperature detecting means b 88 for detecting the temperature of the water vapor generating means 43, and the control means 151 is configured to heat the boiler from the detection result of the temperature detecting means b 88. The means 89 and the pump means 87 are controlled.

  Reference numeral 71 denotes an input means, which shows the operation unit 6 and the display unit 5 here.

  Reference numeral 151 denotes a control unit which is mounted on the control board 23 and operates to cook food according to the contents input from the input unit 71. The state of the food and the state of the heating chamber are detected from each detection unit. Then, each heating means and driving means are operated as necessary.

  The agitation motor 54 relates to a bread making mechanism that kneads the cooking object (bread dough) in the bread container by rotating the kneading blades (not shown) of the bread container (not shown).

  This embodiment is configured as described above. In FIGS. 2 to 3 and 5 to 8, the cooling operation for maintaining the environment of the electrical component 205 provided outside the rear plate 10 is an operation of cooking in a microwave oven. explain. Note that oven cooking, grill cooking, and steam cooking are omitted.

  An object to be heated is placed on the table plate 24 in the heating chamber 28, and range heating is selected by the operation unit 6 of the input means 71. For example, in the case of “warming” for warming up an object to be heated, the operation of selecting “warming” and starting execution is performed by pressing the start key.

  When “warming” starts, the magnetron 33 is operated from the inverter board 22 to generate electric power. And the fan apparatus 15 and the fan 15a operate | move, and the components in the machine room 20 and the main body 1 are cooled.

  The low-temperature indoor air B sucked from the lower intake hole a21a of the bottom plate 21 is sucked by the fan device 15 and sent to the inverter board 22 from the blowout port 15u. The inverter board 22 is cooled by the cooling air 39d. Then, by driving the fan 15 a that cools the magnetron 33 disposed downstream of the inverter board 22, the cooling air 39 d that has cooled the inverter board 22 is strongly sucked from the communication port 38 a of the duct 38, and is provided behind the magnetron 33. The magnetron 33 is cooled by mixing the air wW having a low temperature in the room sucked from the lower intake hole b21b of the bottom plate 21 by the intake of the fan 15a and the cooling air 39 which has been heated by cooling the inverter board 22.

  In addition, the low-temperature air B in the room sucked by the fan device 15 from the lower intake hole a21a of the bottom plate 21 is supplied as cooling air 39h from the outlet 15v of the fan device 15 into the cover 100 from the rear plate exhaust hole a10a of the rear plate 10. Sent and flowing. Then, it flows to the capacitor 202, and then the cooling air 39h flows to the capacitor portion 206 of the substrate 200 in the direction of arrow C. The cooling air 39h is discharged from the cover vent hole 101 of the cover 100 to the outside in the direction of arrow D. Then, the capacitor 202 and the capacitor unit 206 which are the low heat resistant temperature parts 207 are cooled.

  Furthermore, the low-temperature air B in the room, which is sucked in from the lower intake hole a21a of the bottom plate 21 by the fan device 15, cools the control board 23 through the duct k230 from the blowout opening 15u and cools the control board 23 to the left back of the machine room 20 as cooling air 39k. Then, the cooling air 39k is sent from the rear plate exhaust hole b10b of the rear plate 10 into the cover 100 and flows. Then, the cooling air 39k flows in the direction of arrow F to the coil portion 204 of the substrate 200, and the cooling air 39k is discharged in the direction of arrow G from the cover vent hole 101 of the cover 100 to the high heat resistant temperature component 208. The coil unit 204 is cooled.

  The rear plate exhaust hole a <b> 10 a is provided in the immediate vicinity of the fan device 15 in the machine room 20, and the rear plate exhaust hole b <b> 10 b is supplied after the cooling air 39 of the fan device 15 flows to the left back in the machine chamber 20. Therefore, the flow rate of the cooling air 39h in the rear plate exhaust hole a10a is high, and the flow rate of the cooling air 39k in the rear plate exhaust hole b10b is low.

  By doing so, the low heat resistant temperature component 207 requires a large amount of cooling to maintain the temperature of the component below the heat resistant temperature during use because the heat resistant temperature is low. The cover vent hole 101 provided on the bottom surface 100b of the cover 100 is closed by mainly closing the rear plate exhaust hole a10a side and providing the cover vent hole 101 widely (many) on the rear plate exhaust hole b10b side, thereby reducing heat resistance. The entire temperature component 207 is cooled and then exhausted from the cover vent hole 101 so that the temperature of the component can be maintained below the heat-resistant temperature.

  And since the high heat-resistant temperature component 208 has a high heat-resistant temperature and does not require much cooling, the temperature is slightly higher than the air sucked in the lower air intake hole a21a after the control board 23 is cooled. The cooling air 39k is allowed to flow at a slow flow rate to cool the high heat resistant temperature component 208 and exhaust immediately from the opening of the cover vent hole 101 provided widely toward the rear plate exhaust hole b10b, thereby maintaining the temperature of the component below the heat resistant temperature. can do.

  Further, since the low-temperature cooling air 39h blown from the fan device 15 near the rear plate exhaust hole a10a has a high flow velocity, the cover ventilation hole including a large number of small holes provided below the cover 100 after cooling the components. If exhausted from 101, the flow of the exhaust gas will gain momentum and may reach the lower intake hole a21a provided in the bottom plate 21 and re-intake. Therefore, the rear plate exhaust hole b10b is provided at a position facing the rear plate exhaust hole a10a, that is, a position far from the fan device 15, and the cooling air 39k having a low flow rate flows into the cover 100 to cool the cover 100 at a high flow rate. By colliding the wind 39h and the cooling air 39k having a low flow velocity, the flow velocity of the cooling air 39h having a high flow velocity is reduced and exhausted from the cover vent hole 101. Further, by bringing the cover vent hole 101 toward the rear plate exhaust hole b10b, which is the inlet of the cooling air 39k having a low flow rate, the flow rate of the exhaust discharged from the cover vent hole 101 can be reliably reduced.

  Further, the temperature of the cover 100 can be lowered by flowing cooling air through the cover 100. And the cover 100 provided in the back surface of the main body 1 of a heating cooker can be installed in contact with a wall. And the waste heat discharged | emitted from the external exhaust duct 18 and the external exhaust duct 18 used as high temperature can be reliably separated from a wall.

  Further, the downward cover vent hole 101 provided in the cover 100 is provided at a position higher than the lower intake hole a21a and the lower intake hole b21b provided in the bottom plate 21, so that the waste heat with high temperature exhausted from the cover vent hole 101 is high. However, the intake air is prevented from being re-intaken through the lower intake holes a21a and the lower intake holes b21b provided in the bottom plate 21.

  As described above, according to the present embodiment, the electrical component 205 can be efficiently cooled by covering the electrical component 205 additionally mounted on the outline of the main body 1 with the cover 100 and sending the cooling air.

1 body,
10 rear plate, 10a rear plate exhaust hole a, 10b rear plate exhaust hole b, 10c rear plate exhaust hole,
15 fan device, 15v outlet, 15u outlet,
20 machine room, 20a back,
28 heating chamber,
39 Cooling air,
100 cover, 100b bottom, 101 cover vent,
205 Electrical parts, 207 Low heat resistant parts, 208 High heat resistant parts

Claims (2)

A heating chamber for placing an object to be heated in the body,
A machine room provided below the heating chamber for arranging parts necessary for heating the object to be heated;
A fan device that is provided on either one of the left and right sides in the width direction of the machine room and blows cooling air to the components;
A rear plate that is connected to the back surface of the machine room and forms a rear surface of the main body,
The fan device is provided with a blowout port that blows air in the rear plate direction and a blowout port that blows air in the width direction of the machine room,
The rear plate exhaust hole through which the cooling air blown in the rear plate direction from the fan device is passed through the rear plate, and the cooling air blown in the width direction of the machine room is passed to the left and right sides of the rear plate exhaust hole. A rear plate exhaust hole,
A substantially U-shaped cover having a cover vent hole for exhausting cooling air blown from the rear plate exhaust hole is provided on the outside of the rear plate so as to communicate with and cover the two rear plate exhaust holes. A heating cooker characterized by comprising.   2. The cover according to claim 1, wherein the cover is disposed on the rear plate exhaust hole side through which the cooling air blown from the fan device toward the rear plate is passed. The cooking device described.