JP2018028396A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an inverter circuit in a machine room from becoming unable to normally function due to heat in a heating cooker which heats a cooking chamber with a combustion gas.SOLUTION: A heating cooker includes: a cooking chamber 12 provided within a housing; a machine room 13 provided at a space within the housing which excludes the cooking chamber 12; a combustion device 20 which is provided at the machine room 13 and heats the interior of the cooking chamber 12 with a combustion gas; and a control device 40 which controls operation of the combustion device 20. The control device includes an inverter circuit 43 which controls output of a blower fan 21 of the combustion device 20 to control output of the combustion gas by the combustion device 20. The inverter circuit 43 is disposed between an air intake port 13a of the machine room 13 and the blower fan 21.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a cooking device such as a steam convection oven, and more particularly to a cooking device provided with a combustion device that heats the inside of a cooking chamber with a combustion gas obtained by burning a mixed gas.

  The following Patent Document 1 discloses a heating cooker that cooks food with hot air containing steam, and this heating cooker excludes a cooking chamber provided in the housing and a cooking chamber in the housing. A combustion chamber that heats the inside of the cooking chamber with combustion gas, a convection fan that convects the air in the cooking chamber, and a steam generator that supplies steam into the cooking chamber. In this cooking device, steam generated by the operation of the steam generator is supplied to the hot air generated by the operation of the combustion device and the convection fan in the cooking chamber, and the ingredients in the cooking chamber are cooked by the hot air containing steam. The

  The combustion apparatus of this heating cooker heats the inside of a cooking chamber with a combustion gas obtained by burning a mixed gas. This combustion apparatus is made into a mixed gas by flowing in a blower fan that sends out combustion air, a gas supply pipe that sends out fuel gas, a combustion air that is sent out by the blower fan, and a fuel gas that is sent out by the gas supply pipe A mixing tube, a burner that generates a combustion gas by burning the mixed gas in the mixing tube, and a heating tube that allows the combustion gas to pass therethrough, except for the burner and the heating tube disposed in the cooking chamber. Placed in the room. Further, the machine room is provided with an inverter circuit for variably controlling the air volume of the blower fan, and the output (thermal power) by the combustion device can be adjusted by the air volume of the blower fan adjusted by the inverter circuit.

JP 2013-200111 A

  In the heating cooker described in Patent Document 1 described above, the temperature in the machine room is likely to increase due to the heat generated by the inverter circuit and the combustion of the burner of the combustion device, which may exceed the usable temperature range of the inverter circuit. It was. For this reason, unless the heat is exhausted appropriately in the machine room, the inverter circuit cannot be operated normally, and the inside of the cooking chamber may not be heated properly by the combustion device. An object of the present invention is to prevent an inverter circuit in a machine room from becoming unable to operate normally due to heat in a cooking device that heats the inside of a cooking chamber with combustion gas.

  In order to solve the above problems, the present invention provides a cooking chamber provided in a housing, a machine room provided in a space excluding the cooking chamber in the housing, a combustion apparatus for heating the inside of the cooking chamber with combustion gas, A heating cooker provided in a machine room and provided with a control device that controls the operation of the combustion device, the combustion device comprising a blower fan that sends out combustion air, a gas supply pipe that sends out fuel gas, and a combustion And a burner that burns the mixed gas in the mixing tube to generate combustion gas, and the combustion gas generated by the burner is generated in the cooking chamber. The inside of the cooking chamber is heated by passing, and the control device includes an inverter circuit that controls the output of the combustion gas by the combustion device by controlling the output of the blower fan, and the bottom of the machine room Provides a heating cooker characterized in that an air intake port is formed to take in the air sucked by the blower fan into the machine room, and an inverter circuit is arranged in the air passage through which air is led from the air intake port to the blower fan To do.

  In the heating cooker configured as described above, an air intake port is formed at the bottom of the machine room to take in the air sucked by the blower fan into the machine room, and the air is introduced from the air intake port to the blower fan. Since the inverter circuit is arranged in the passage, the inverter circuit is cooled by the air led from the air intake port to the blower fan in the machine room, thereby preventing the inverter circuit from becoming hot and not working. I was able to.

  In the cooking device configured as described above, the blower fan is provided in the upper part of the machine room, the inverter circuit is fixed to the peripheral wall of the machine room by a bracket, and the bracket is vertically arranged between the peripheral wall of the machine room. It is preferable to form a ventilation path through which air passes. When doing in this way, the air led to the blower fan from the air intake port passes through the ventilation path between the bracket and the peripheral wall of the machine room, so that the inverter circuit can be efficiently cooled.

  In the cooking device configured as described above, a cooling fan for cooling the control device is provided in the machine room, the control device is disposed in an air passage through which air is led from the air intake port to the cooling fan, and cooling is performed. It is preferable to arrange the combustion device at a position where air is blown from the fan. In this case, both the control device and the combustion device can be efficiently cooled by the cooling fan.

  In the cooking device configured as described above, an operation panel for inputting operation of the heating cooker is disposed on the front wall of the housing on the machine room side, and a control device is disposed on the rear side of the operation panel. It is preferable that the cooling fan is disposed on the rear side of the operation panel with the suction side as the front side and the blowout side as the rear side, and the combustion device is disposed on the blowout side on the rear side of the cooling fan. When this is done, the wiring between the operation panel and the control device can be shortened to prevent the wiring from being caught in the cooling fan.

  In the cooking device configured as described above, the machine room includes a fan motor of a convection fan that convects the air in the cooking chamber, a supply / exhaust pipe that communicates the inside of the cooking chamber and the outside of the housing, and a supply / exhaust pipe An air supply / exhaust valve that opens and closes the air supply / exhaust pipe; a steam generator that supplies steam into the cooking chamber; and an exhaust fan that exhausts air in the machine room. Arranged in the center, the intake / exhaust pipe provided with an intake / exhaust valve is arranged on the rear side of the combustion device on the upper side of the fan motor, the steam generator is arranged on the rear side of the fan motor and the supply / exhaust pipe, An exhaust fan is arranged in the central part in the front-rear direction of the housing, a partition plate is provided between the supply / exhaust pipe and the fan motor, and the rear edge of the partition plate extends upward to supply / exhaust pipe and the steam generator. It is preferable to provide a partition plate part that separatesIn this case, the exhaust from the cooling fan that has cooled the control device and the combustion device can be further passed through the air supply / exhaust pipe to prevent the air supply / exhaust valve from reaching a high temperature, and the air supply / exhaust valve can be Therefore, it was possible to avoid the influence of heat from the steam generator. Furthermore, since the exhaust air that has passed through the air supply / exhaust pipe by the cooling fan can be discharged to the outside of the housing by the exhaust fan, it was possible to prevent heat from being accumulated in the machine room.

It is a front view of one embodiment of a heating cooker of the present invention. It is a left view of FIG. It is sectional drawing of the horizontal direction in the AA of FIG. It is sectional drawing of the vertical direction in the BB line of FIG. It is a perspective view of the state which removed the left side wall of the housing. It is a cross-sectional perspective view of the vertical direction in the CC line of FIG. It is the schematic when a supply / exhaust pipe is connected to the steam delivery cylinder.

  Hereinafter, an embodiment of a heating cooker of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1 to 3, the heating cooker 10 includes a cooking chamber 12 in a housing 11 and a machine room 13 in a space excluding the cooking chamber 12 in the housing 11. In this embodiment, A cooking chamber 12 is disposed in a portion excluding the left side portion of the housing 11, and a machine room 13 is provided in a space on the left side portion of the housing 11.

  As shown in FIG.3 and FIG.4, the cooking chamber 12 accommodates a foodstuff, and is for heating and cooking the accommodated foodstuff. An opening through which food is taken in and out is provided on the front surface of the cooking cabinet 12, and the opening on the front surface is opened and closed by a door 14. The outer peripheral surface of the cooking cabinet 12 is covered with a heat insulating material, and the heat in the cooking cabinet 12 is difficult to be transmitted outside the machine room 13 and the housing 11.

  As shown in FIGS. 3 to 5, the heating cooker 10 includes a convection fan 15 that convects the air in the cooking chamber 12, a temperature sensor 16 that detects the temperature in the cooking chamber 12, and the cooking chamber 12. A combustion device 20 for heating and a steam generator 30 for generating steam in the cooking chamber 12 are provided. The convection fan 15 convects the air in the cooking cabinet 12, and includes a fan blade 15 a of the convection fan 15 in the cooking cabinet 12 and a fan motor 15 b of the convection fan 15 in the machine room 13. The fan blade 15a is rotated by the operation of the fan motor 15b, and the air in the cooking cabinet 12 is convected by the rotation of the fan blade 15a.

  As shown in FIGS. 3 to 5, the combustion device 20 heats the inside of the cooking chamber 12 with the combustion gas when the mixed gas of combustion air and fuel gas is burned. The combustion device 20 includes a blower fan 21, a gas supply pipe 23, and a mixing pipe 24, which are main components, in the machine chamber 13, and a heating pipe 25 and a burner 26 in the cooking chamber 12.

  As shown in FIG. 5, the blower fan 21 supplies combustion air, and the blower fan 21 is disposed in the upper part on the front side of the machine room 13. The blower fan 21 is provided with an intake port on the cooking chamber 12 side, and the blower fan 21 is connected to the mixing tube 24 by a blower tube 22. Combustion air sucked from the intake port of the blower fan 21 is supplied to the mixing tube 24 by the blower tube 22. A gas supply pipe 23 to which fuel gas is supplied from a gas supply source is connected to the mixing pipe 24, and the fuel gas from the gas supply source is supplied to the mixing pipe 24 through the gas supply pipe 23. A gas valve 27 is interposed in the gas supply pipe 23, and fuel gas is supplied from the gas supply pipe 23 to the mixing pipe 24 when the gas valve 27 is opened. A pressure equalizing valve 28 is interposed in the gas supply pipe 23, and the pressure equalizing valve 28 is connected to the blower pipe 22 by a pressure detection pipe 23a. The pressure equalizing valve 28 is opened at an opening corresponding to the pressure of air supplied from the blower fan 21 through the blower pipe 22 to the mixing pipe 24, and the amount of fuel gas supplied from the gas supply pipe 23 to the mixing pipe 24 ( The flow rate is adjusted according to the air volume of the combustion air.

  As described above, the mixing pipe 24 is supplied with the combustion air sent from the blower opening of the blower fan 21 and the fuel gas sent from the gas supply pipe 23. These combustion air and fuel air are supplied to the mixing pipe 24. Mixed to become a mixed gas. A burner 26 is connected to the mixing pipe 24 on the other end side opposite to one end side to which the blower pipe 22 and the gas supply pipe 23 are connected. The mixed gas supplied from the mixing pipe 24 is burned by the burner 26. It becomes hot combustion gas. A heating tube 25 is disposed on the peripheral edge of the left side wall of the cooking cabinet 12, and a burner 26 is disposed in the heating tube 25. The mixed gas supplied from the mixing tube 24 is combusted by the burner 26 and becomes a high-temperature combustion gas, passes through the heating tube 25, and the cooking chamber 12 is heated by the combustion gas passing through the heating tube 25.

  As shown in FIGS. 3 and 5, a steam generator 30 for supplying steam into the cooking chamber 12 is provided at the rear of the machine room 13. The steam generating device 30 includes a steam generating container 31 that stores water of a predetermined water level, and a heater (not shown) is provided in the steam generating container 31. The heater heats the water in the steam generating container 31 by allowing the combustion gas to pass through, and similarly to the combustion device 20 that heats the inside of the cooking cabinet 12, a mixed gas of combustion air and fuel gas is used. The combusted combustion gas passes, and the water in the steam generation container 31 is heated by the passing combustion gas.

  A steam delivery tube 32 is provided above the steam generation vessel 31, and the steam generation vessel 31 is connected to the cooking chamber 12 by the steam delivery tube 32. Steam generated in the steam generation container 31 is guided into the cooking chamber 12 by the steam delivery tube 32. A water level detection container 33 is fixed outside the steam generation container 31, and a float switch (not shown) is provided in the water level detection container 33. The lower part of the water level detection container 33 is connected to the lower part of the steam generation container 31, and the float switch detects a predetermined water level in the steam generation container 31 by detecting a predetermined water level in the water level detection container 33. is there. A water supply pipe 34 derived from a water supply source such as a water supply is connected to the water level detection container 33, and a water supply valve (not shown) is interposed in the water supply pipe 34. When the water supply valve is opened, water from a water supply source such as water supply is sent from the water supply pipe 34 to the water level detection container 33, and is sent to the steam generation container 31 through the water level detection container 33. In the steam generating device 30, the water in the steam generating container 31 is heated by the combustion gas passing through the heater to become steam, and the steam in the steam generating container 31 is guided to the cooking chamber 12 by the steam delivery tube 32.

  As shown in FIGS. 3 and 5, the machine room 13 is provided with a supply / exhaust pipe 17 communicating with the outside of the cooking chamber 12 and the housing 11, and the supply / exhaust pipe 17 is a central portion in the front-rear direction of the machine room 13. Is provided on the upper side of the fan motor 15b. The air supply / exhaust pipe 17 discharges the air in the cooking chamber 12 to the outside of the housing 11 or allows the air outside the housing 11 to flow into the cooking chamber 12. An air supply / exhaust valve 17a is interposed in the air supply / exhaust pipe 17, and air inside the cooking chamber 12 or air outside the housing 11 passes through the air supply / exhaust pipe 17 when the air supply / exhaust valve 17a is opened.

  As shown in FIGS. 1 to 3, an operation panel 18 is disposed on the front wall of the housing 11 on the machine room 13 side, and various cooking programs for the heating cooker 10 are selected on the operation panel 18. Various operation switches are provided. As shown in FIGS. 3, 5, and 6, a control device 40 that controls the operation of the heating cooker 10 is provided on the rear side of the operation panel 18, and the control device 40 includes the convection fan 15 (particularly, Fan motor 15 b), temperature sensor 16, supply / exhaust valve 17 a, operation panel 18, combustion device 20, and steam generator 30 are connected. In addition, since the control apparatus 40 is provided immediately behind the operation panel 18, the wiring which connects the operation panel 18 is hard to be disconnected.

  The control device 40 includes a microcomputer (not shown), and the microcomputer includes a CPU, a RAM, a ROM, and a timer (all not shown) connected via a bus. The control device 40 includes a cooking program for cooking the food in the cooking cabinet 12 in the ROM. The cooking program includes a hot air mode cooking program in which the convection fan 15 and the combustion device 20 are operated to heat and cook the food with hot convection, and the convection fan 15 and the steam generator 30 are operated to generate food with the convection steam. It consists of three modes: a steam mode cooking program for cooking by heating, and a combination mode cooking program for cooking food by hot air containing convection steam by operating the convection fan 15, the combustion device 20, and the steam generator 30. Has a cooking program.

  The control device 40 includes an inverter unit 41 that controls the output (thermal power) of the combustion gas from the combustion device 20 by controlling the output (air volume) of the blower fan 21 of the combustion device 20. As shown in FIGS. 5 and 6, the inverter unit 41 includes a bracket 42 that is fixed to the machine room 13, an inverter circuit 43, and a heat sink (heat radiator) 44. The bracket 42 fixes the inverter circuit 43 in the machine room 13, and is fixed to a heat insulating material on the outer surface of the left side wall of the cooking chamber 12 below the combustion device 20 as a peripheral wall in the machine room 13. The bracket 42 has a shape in which a flange for mounting that extends outward at both ends of a U-shaped horizontal cross section is formed, and in order to increase the heat dissipation efficiency of the inverter circuit 43, the vertical ventilation between the cooking chamber 12 and the bracket 42. A path 42a is formed. An inverter circuit 43 and a heat sink 44 are fixed to the bracket 42. The inverter circuit 43 controls the output (rotation speed) of the blower fan 21 based on the control signal of the control device 40. The inverter unit 41 also includes an inverter circuit that controls the output of the blower fan of the combustion device of the steam generator 30. The heat sink 44 radiates heat from the inverter circuit 43 that generates heat during operation, and is fixed to the bracket 42 on the upper side of the inverter circuit 43.

  The machine room 13 is provided with an exhaust heat mechanism described below for exhaust heat of the control device 40 and the inverter unit 41. As shown in FIG. 6, the housing 11 is formed with an air intake port 13 a at the bottom of the front side of the machine chamber 13, so that outside air is introduced into the machine chamber 13 from the air intake port 13 a. It has become. The air intake port 13a is provided with a filter so that no foreign matter enters the machine chamber 13 from the air intake port 13a. The inverter unit 41 is disposed in the machine room 13 between the air intake port 13a and the blower fan 21 of the combustion device 20, and the air flow is indicated by the two-dot chain line arrow in FIG. The air introduced into the machine room 13 from the air intake port 13 a passes through the inverter unit 41 and is sucked into the air intake port of the blower fan 21. At this time, the inverter unit 41 is cooled when the air introduced into the machine room 13 from the air intake port 13 a is sucked into the air intake port of the blower fan 21. In addition, since the vertical air passage 42a is formed between the bracket 42 and the outer surface of the left side wall of the cooking cabinet 12, the inverter unit 41 is provided not only with air passing outside but also with the air passage 42a inside the bracket 42. It is also cooled by the air passing through.

  As shown in FIGS. 3, 5, and 6, a cooling fan 51 for cooling the control device 40 is provided in the upper front portion of the machine room 13. The cooling fan 51 is disposed immediately behind the operation panel 18 with the suction side as the front side and the blowout side as the rear side. A control device 40 is disposed between the cooling fan 51 and the air intake port 13a. As indicated by the two-dot chain line arrow in FIG. 5, the air introduced into the machine room 13 from the air intake port 13 a rises along the immediate rear side of the operation panel 18, and the cooling fan 51. Is sucked into the suction side. At this time, the control device 40 is cooled when the air introduced into the machine room 13 from the air intake port 13a rises along the rear side of the operation panel 18. In addition, the combustion device 20 is disposed on the rear side of the cooling fan 51 that is the blowing side, and the combustion device 20 is cooled by the air blown out from the cooling fan 51.

  As shown in FIG. 2, an outside air intake port 13 b for introducing outside air into the machine chamber 13 is provided in the lower part of the left side wall of the housing 11, and the upper side of the left side wall of the housing 11 is arranged in the front-rear direction. An exhaust fan 52 for exhausting the machine chamber 13 is provided in the middle of the above. As indicated by the two-dot chain line arrow in FIG. 5, the air outside the housing 11 is taken into the machine chamber 13 from the outside air inlet 13b, and the steam generator 30 The air that has been cooled by passing and passed through the steam generator 30 is exhausted to the outside of the housing 11 by the exhaust fan 52. In addition, the air blown out by the cooling fan 51 described above passes through the combustion device 20, is sent to an intermediate portion in the front-rear direction of the machine chamber 13, and is discharged to the outside of the housing 11 by the exhaust fan 52.

  As shown in FIG. 5, a partition plate 53 is provided between the air supply / exhaust pipe 17 and the fan motor 15 b in the middle part of the machine room 13 in the front-rear direction, and the partition plate 53 is connected to the air supply / exhaust pipe 17. It has a function of preventing adhering water droplets from adhering to the fan motor 15b. A partition plate portion 53 a extending upward is provided at the rear edge of the partition plate 53, and the partition plate portion 53 a separates the supply / exhaust pipe 17 and the steam generator 30 and supplies the supply / exhaust valve 17 a of the supply / exhaust pipe 17. (In particular, the valve motor) is less susceptible to the heat of the steam generating container 31. Further, the partition plate portion 53a also has a function of exhausting the air blown out by the cooling fan 51 to the outside of the housing 11 by the exhaust fan 52 without flowing it to the steam generator 30 side.

  When the cooking device in the combination mode is executed by the cooking device 10 and the combustion apparatus 20 is operated, the gas valve 27 is first opened and the fan motor of the blower fan 21 is operated. Combustion air is introduced from the blower pipe 22 into the mixing pipe 24 by the operation of the blower fan 21, and the fuel gas whose air volume is adjusted according to the supply pressure of the combustion air in the blower pipe 22 by the pressure equalizing valve 28 is supplied as a gas. It is introduced from the tube 23 into the mixing tube 24. A mixed gas in which combustion air and fuel gas are mixed is sent from the mixing tube 24 to the burner 26, and the mixed gas is burned by the burner 26 to become a combustion gas. The combustion gas is exhausted out of the housing 11 through the heating pipe 25. At this time, the air around the heating tube 25 in the cooking chamber 12 is heated by heat exchange with the combustion gas passing through the heating tube 25, and the heated air is heated by the rotation of the fan blades 15 a of the convection fan 15. Convection in the cooking chamber 12. In the steam generator 30, the water in the steam generation container 31 is heated by the combustion gas from the combustion apparatus to become steam, and the steam in the steam generation container 31 is guided into the cooking chamber 12 by the steam delivery tube 32. The steam introduced into the cooking chamber 12 convects in the cooking chamber 12 together with the hot air generated by the combustion device 20 and the convection fan 15 as described above, and the food in the cooking chamber 12 is cooked by hot air containing steam.

  In the heating cooker 10 configured as described above, the control device 40 includes an inverter circuit 43 that controls the output of the combustion gas from the combustion device 20 by controlling the output of the blower fan 21 of the combustion device 20. Yes. The inverter circuit 43 generates heat during operation and may not operate normally at high temperatures. In the heating cooker 10, an air intake port 13 a that takes in the air sucked by the blower fan 21 into the machine chamber 13 is formed at the bottom of the machine chamber 13, and the air is guided from the air intake port 13 a to the blower fan 21. An inverter circuit 43 is disposed in the air passage. As a result, the inverter circuit 43 is cooled by the air guided to the blower fan 21 from the air intake port 13a in the machine room 13, so that the inverter circuit 43 is prevented from becoming inoperable due to a high temperature. did it.

  In the heating cooker 10, the air intake port 13 a is formed at the bottom of the machine room 13, the blower fan 21 is provided at the upper part of the machine room 13, and the inverter circuit 43 is mounted on the peripheral wall of the machine room 13 with a bracket 42. The bracket 42 is formed with an air passage 42 a through which air passes vertically between the bracket 42 and the peripheral wall of the machine room 13. As a result, the air guided to the blower fan 21 from the air intake port 13a passes through the ventilation path 42a between the bracket 42 and the peripheral wall of the machine room 13, whereby the inverter circuit 43 can be cooled more efficiently. It was.

  Further, in the heating cooker 10, the machine room 13 is provided with a cooling fan 51 for cooling the control device 40, and the control device 40 is disposed in an air passage through which air is led from the air intake port 13 a to the cooling fan 51. In addition, since the combustion device 20 is arranged at a position where air is blown from the cooling fan 51, both the control device 40 and the combustion device 20 can be efficiently cooled by the cooling fan 51.

  In addition, in the cooking device 10, an operation panel 18 for inputting operation of the cooking device 10 is disposed on the front wall of the housing 11 on the machine room 13 side, and on the back surface of the front wall on the machine room 13 side. A control device 40 is arranged. As described above, the air intake port 13a is formed at the front bottom portion of the machine room 13, and the cooling fan 51 is disposed at the upper part of the back surface of the front wall on the machine room 13 side with the suction side as the front side and the blowout side as the rear side. The combustion device 20 is disposed behind the cooling fan 51. Thereby, the wiring between the operation panel 18 and the control device 40 can be shortened, and the wiring can be prevented from being caught in the cooling fan 51.

  In the heating cooker 10, the machine room 13 includes a fan motor 15 b of a convection fan 15 that convects air in the cooking chamber 12, a supply / exhaust pipe 17 that communicates the inside of the cooking chamber 12 and the outside of the housing 11, and An air supply / exhaust valve 17 a that is interposed in the air supply / exhaust pipe 17 and opens / closes the air supply / exhaust pipe 17, a steam generator 30 that supplies steam into the cooking chamber 12, and an exhaust fan 52 that exhausts air in the machine room 13 Is provided. The fan motor 15b of the convection fan 15 is disposed at the center in the front-rear direction of the machine room 13, and the air supply / exhaust pipe 17 with the air supply / exhaust valve 17a interposed is disposed on the rear side of the combustion device 20 above the fan motor 15b. The steam generator 30 is disposed on the rear side of the fan motor 15b and the air supply / exhaust pipe 17. In the heating cooker 10, an exhaust fan 52 is disposed at the center in the front-rear direction of the housing 11, a partition plate 53 is provided between the supply / exhaust pipe 17 and the fan motor 15 b, and a rear edge of the partition plate 53 is provided. Is provided with a partition wall plate portion 53 a extending upward and separating the air supply / exhaust pipe 17 and the steam generator 30. As a result, exhaust from the cooling fan 51 that has cooled the control device 40 and the combustion device 20 can be further prevented from passing through the air supply / exhaust pipe 17 to cause the air supply / exhaust valve 17a to reach a high temperature. It was possible to prevent the exhaust valve 17a from being affected by the heat generated by the steam generator 30 by the partition plate portion 53a. Furthermore, since the exhaust gas that has passed through the air supply / exhaust pipe 17 by the cooling fan 51 can be discharged to the outside of the housing 11 by the exhaust fan 52, heat can be prevented from being accumulated in the machine room 13.

  Moreover, in the heating cooker 10, even if the combination mode or the steam mode is executed after the steam supply by the steam generator 30 is stopped in the hot air mode, the steam cooker 30 can move from the steam generator 30 to the cooking chamber 12. In order to supply steam immediately, it is preferable to control so that the hot water in the steam generating container 31 is kept at a high temperature. In this case, when the hot water in the steam generating container 31 is kept warm, in order to prevent the steam generated during the warming from flowing into the cooking chamber 12 performing cooking in the hot air mode, It is preferred to use the mechanism shown.

  As shown in FIG. 7, the heating cooker 10 has three-way instead of the supply / exhaust valve 17a in the portion where the supply / exhaust pipe 17 is connected to the steam delivery cylinder 32 and the supply / exhaust pipe 17 of the steam delivery cylinder 32 is connected. A valve 17b is employed. When it is set to supply 100% steam to the cooking chamber 12 in the combination mode or the steam mode, the three-way valve 17b is connected to the steam generating container 31, the cooking chamber 12, and the like as shown in FIG. Is in a state in which the air supply / exhaust pipe 17 is closed with respect to the steam delivery cylinder 32. Further, when 50% steam is set to be supplied in the combination mode or the steam mode, the three-way valve 17b is connected between the air supply / exhaust pipe 17 and the steam delivery cylinder 32 as shown in FIG. While maintaining the closed state, the opening degree of the steam generation container 31 and the cooking chamber 12 is set to a state in which the opening degree is approximately halved.

  On the other hand, when the steam supply is set to be stopped in the hot air mode, the three-way valve 17b is connected to the supply / exhaust pipe 17 and the steam via the steam delivery tube 32 as shown in FIG. It is set as the state which the generation | occurrence | production container 31 connected, and let the steam generation container 31 and the cooking chamber 12 be the closed state. In this state, even if the hot water in the steam generation container 31 is kept warm, the steam generated in the steam generation container 31 is discharged from the supply / exhaust pipe 17 to the outside of the housing 11 and is transferred from the steam generation container 31 to the cooking chamber 12. Will not flow. Further, when cooking so as to remove the steam generated from the food in the hot air mode, as shown in FIG. 7D, the three-way valve 17b is in a state where the steam generating container 31 and the supply / exhaust pipe 17 are closed. In addition, the supply / exhaust pipe 17 and the cooking chamber 12 are communicated with each other via the steam delivery cylinder 32. In this state, the air outside the housing 11 is guided to the cooking chamber 12 by the air supply / exhaust pipe 17.

 DESCRIPTION OF SYMBOLS 10 ... Heat cooker, 11 ... Housing, 12 cooker, 13 ... Machine room, 13a ... Air intake, 15 ... Convection fan, 15b ... Fan motor, 17 ... Supply / exhaust pipe, 17a ... Supply / exhaust valve, 18 ... Operation panel, 20 ... Combustion device, 21 ... Blower fan, 23 ... Gas supply pipe, 24 ... Mixing pipe, 26 ... Burner, 30 ... Steam generator, 40 ... Control device, 41 ... Inverter circuit, 42 ... Bracket, 51 ... Cooling fan, 52 exhaust fan, 53... Partition plate, 53 a.

Claims (5)

A cooking chamber provided in the housing;
A machine room provided in a space in the housing excluding the cooking chamber;
A combustion apparatus for heating the inside of the cooking chamber with combustion gas;
A heating cooker provided in the machine room and provided with a control device for controlling the operation of the combustion device,
The combustion apparatus includes: a blower fan that sends out combustion air; a gas supply pipe that sends out fuel gas; a mixing pipe that mixes the combustion air and the fuel gas into a mixed gas; and mixing of the mixing pipe A burner that burns gas to generate combustion gas, and heats the inside of the cooking chamber by passing the combustion gas generated by the burner through the cooking chamber,
The control device includes an inverter circuit that controls the output of combustion gas by the combustion device by controlling the output of the blower fan,
An air intake port for taking in the air sucked by the blower fan into the machine chamber is formed at the bottom of the machine chamber, and the inverter circuit is arranged in an air passage through which air is led from the air intake port to the blower fan A cooking device characterized by that. The heating cooker according to claim 1, wherein
The blower fan is provided in the upper part of the machine room,
The inverter circuit is fixed to a peripheral wall of the machine room by a bracket,
The cooking device according to claim 1, wherein a ventilation passage through which air passes vertically is formed between the bracket and the peripheral wall of the machine room. The heating cooker according to claim 1 or 2,
The machine room is provided with a cooling fan for cooling the control device,
The cooking device, wherein the control device is disposed in an air passage through which air is guided from the air intake port to the cooling fan, and the combustion device is disposed at a position where air is blown from the cooling fan. vessel. The cooking device according to claim 3,
An operation panel for inputting operation of the heating cooker is disposed on the front wall of the housing on the machine room side, and the control device is disposed on the rear side of the operation panel.
The cooling fan has a suction side as a front side and a blower side as a rear side, and is disposed at an upper portion on the rear side of the operation panel, and the combustion device is disposed at a blowout side on the rear side of the cooling fan. To cook. The cooking device according to claim 4, wherein
In the machine room, a fan motor of a convection fan that convects the air in the cooking chamber, a supply / exhaust pipe that communicates the inside of the cooking chamber with the outside of the housing, and the supply / exhaust air that is interposed in the supply / exhaust pipe An air supply / exhaust valve that opens and closes a pipe, a steam generator that supplies steam into the cooking chamber, and an exhaust fan that exhausts air in the machine room,
The fan motor is disposed at a central portion in the front-rear direction of the machine room, and the air supply / exhaust pipe in which the air supply / exhaust valve is interposed is disposed above the fan motor and behind the combustion device, The generator is arranged on the rear side of the fan motor and the air supply / exhaust pipe, and the exhaust fan is arranged in the center in the front-rear direction of the housing,
A partition plate is provided between the supply / exhaust pipe and the fan motor, and a partition plate portion extending upward is provided at a rear edge of the partition plate so as to separate the supply / exhaust pipe from the steam generator. A heating cooker.

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