JP2021074317A - Cooker - Google Patents

Abstract

To provide a cooker capable of suppressing an influence on an object to be cooked even when an abnormality occurs in a decompression pump.SOLUTION: A cooker includes: a cooking container for accommodating an object to be cooked; a lid body provided with a vent hole connected to the inside of the cooking container; a heating part for heating the object to be cooked; a decompression pump for decompressing the inside of the cooking container, which is a space for accommodating the object to be cooked in the cooking container; a selector valve for switching a state between a state in which the vent hole is connected to a suction port of the decompression pump, and a state in which the vent hole is closed; and a control device for controlling the heating part, the decompression pump, and the selector valve. The control device includes: determination means for determining whether or not there is an abnormality in the decompression pump; valve control means for controlling the selector valve so that the vent hole keeps the closed state for a predetermined time when the determination means determines that there is an abnormality in the decompression pump; and pump control means for stopping the decompression pump while the vent hole is in the closed state after the selector valve is switched by the valve control mans.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cooking device for cooking an object to be cooked such as foodstuffs.

Conventionally, a rice cooker provided with a depressurizing means such as a pump for depressurizing the pressure inside a pot containing a cooked rice to less than the atmospheric pressure is known (see, for example, Patent Document 1). The rice cooker disclosed in Patent Document 1 opens the communication portion between the depressurizing means and the pot when the elapsed heat retention time reaches a preset time after the step of arranging the cooked rice. Operate the decompression means. This prevents the growth of germs in the pot and prevents the rice and water in the pot from spoiling.

Japanese Unexamined Patent Publication No. 2009-28088

In the rice cooker disclosed in Patent Document 1, the decompression means may stop or break down at a timing unrelated to the control. Possible causes of stoppage unrelated to the control of the decompression means and failure of the decompression means include, for example, long-term operation of the decompression means and operation in a high temperature environment. If the decompression means of the rice cooker disclosed in Patent Document 1 is used for cooking and the decompression pump, which is the decompression means, stops or breaks down at a timing unrelated to the control, the cooked food is used by the user. You will not be able to cook as intended.

The present invention has been made to solve the above problems, and to obtain a cooking cooker that suppresses the influence on the food to be cooked even if an abnormality occurs in the decompression pump.

The cooking cooker according to the present invention includes a cooking container for accommodating an object to be cooked, a lid covering the opening of the cooking container and provided with a ventilation hole connected to the inside of the cooking container, and the object to be cooked. A heating unit that heats the cooking container, a decompression pump that decompresses the inside of the cooking container, which is a space in the cooking container in which the object to be cooked is housed, and a state in which the ventilation holes are connected to the intake port of the decompression pump. It has a switching valve for switching between the closed state of the ventilation hole, the heating unit, the pressure reducing pump, and a control device for controlling the switching valve, and the control device determines whether or not the pressure reducing pump has an abnormality. And the valve control that controls the switching valve so that the vent hole maintains the closed state for a predetermined time when it is determined by the determination means that there is an abnormality in the pressure reducing pump. It has means and pump control means for stopping the pressure reducing pump while the switching valve is switched by the valve control means and the vent is in the closed state.

According to the present invention, when an abnormality of the decompression pump is detected, the valve control means blocks the space for accommodating the food to be cooked and the path connecting the decompression pump, so that the decompression pump is stopped. During the period, the airtightness of the space where the food to be cooked is stored is maintained. Therefore, it is possible to suppress an increase in the air pressure in the space where the object to be cooked is accommodated while the decompression pump is stopped, and it is possible to suppress the influence of the decompression pump on the object to be cooked.

It is a side perspective view schematically showing one configuration example of the cooking cooker according to the first embodiment. It is a schematic diagram which shows one configuration example of the decompression pump shown in FIG. It is a schematic diagram which shows one configuration example of the decompression pump shown in FIG. It is a block diagram which shows an example of the structure of the heating cooker shown in FIG. It is a functional block diagram which shows one configuration example of the control device shown in FIG. It is a hardware configuration diagram which shows one configuration example of the control device shown in FIG. FIG. 5 is a hardware configuration diagram showing another configuration example of the control device shown in FIG. FIG. 5 is a flowchart showing an example of a procedure in which the cooking cooker according to the first embodiment operates in accordance with the selected cooking mode. It is a flowchart which shows an example of the operation procedure when an abnormality occurs in the decompression pump in the heating cooker which concerns on Embodiment 1. FIG. It is a figure which shows the time-series change of various parameters by the control shown in FIG.

Embodiment 1.
The configuration of the cooking device of the first embodiment will be described. FIG. 1 is a side perspective view schematically showing a configuration example of the cooking cooker according to the first embodiment. FIG. 1 shows a cross-sectional structure of a part of the structure of the cooking cooker. The cooking cooker 100 has a main body 1, a lid 25, and an operation display unit 23.

The main body 1 has a container cover 2, a cooking container 5, and a heating unit 3. The container cover 2 is fixed to the inside of the main body 1. A holding portion 2a for holding the cooking container 5 is provided on the upper edge of the container cover 2. The heating unit 3 is provided on the outer wall portion of the container cover 2. The heating unit 3 is, for example, an electromagnetic induction heating coil. The electromagnetic induction heating coil has a structure in which a conducting wire is wound in a spiral shape, and a high-frequency current is supplied to the conducting wire. In the first embodiment, the case where the heating unit 3 is an electromagnetic induction heating coil will be described, but it may have not only the electromagnetic induction heating coil but also other heating means (not shown in the figure).

The cooking container 5 is detachably attached to the inside of the container cover 2. A flange portion 5a is provided on the upper edge of the cooking container 5 along the outer circumference. A handle portion 6 is provided along the outer periphery of the outer side surface of the side wall of the cooking container 5. When the cooking container 5 is mounted inside the container cover 2, the handle portion 6 comes into contact with the holding portion 2a, and the cooking container 5 is held by the container cover 2. The cooking container 5 receives an induced current from the heating unit 3 and generates heat. When the cooking container 5 generates heat, the inside of the cooking container 5 is heated.

A hole 4b penetrating the bottom plate is formed in the center of the bottom plate of the container cover 2, and a pot bottom temperature sensor 4 is provided in the hole 4b. The pot bottom temperature sensor 4 detects the temperature of the bottom plate of the cooking container 5. A compression spring 4a is provided on the inner bottom of the main body 1 at a position where the pot bottom temperature sensor 4 is located. The pot bottom temperature sensor 4 is supported by the main body 1 via a compression spring 4a. By pushing the pot bottom temperature sensor 4 upward by the elastic force of the compression spring 4a, the state in which the pot bottom temperature sensor 4 is in close contact with the cooking container 5 is maintained.

The lid 25 is attached to the main body 1 via a hinge (not shown). Therefore, the user can open and close the lid 25 with respect to the main body 1. The lid 25 has an inner lid 7 that covers the opening of the cooking container 5 and an outer lid 9 that covers the inner lid 7. The outer lid 9 has a switching valve 11, an on-off valve 17, a pressure reducing pump 13, and a cartridge 20. The cartridge 20 serves to temporarily store the steam generated inside the cooking container 5. The cartridge 20 is provided with a steam discharge valve 18 for guiding the high-pressure steam inside the cooking container 5 into the cartridge 20. The steam discharge valve 18 is provided at a position facing a hole provided in the inner lid 7 in the outer lid 9 in a state where the lid body 25 is closed. The hole provided in the inner lid 7 is closed by the steam discharge valve 18 when the pressure inside the cooking container 5 is atmospheric pressure or less. When the inside of the cooking container 5 is lower than the atmospheric pressure, the steam discharge valve 18 comes into close contact with the cartridge packing 21 and the inside of the cooking container 5 is sealed. The operation of the steam discharge valve 18 will be described later. Further, the cartridge 20 is provided with a steam discharge port 19 for discharging the steam that has flowed into the cartridge 20 to the outside.

The decompression pump 13 is a decompression device that decompresses the inside of the cooking container 5. The decompression pump 13 is, for example, a diaphragm pump. 2 and 3 are schematic views showing a configuration example of the pressure reducing pump shown in FIG. FIG. 2 is a diagram showing an intake process of the pressure reducing pump 13, and FIG. 3 is a diagram showing an exhaust process of the pressure reducing pump 13. As shown in FIG. 2, the decompression pump 13 transmits the drive of the housing 61 provided with the intake port 66, the exhaust port 67, and the diaphragm 63, the motor 62 including the rotating shaft 62a, and the motor 62 to the diaphragm 63. It has a shaft 64 and. A disk 65 is attached to the rotating shaft 62a. Of the two ends of the shaft 64, one end is attached to the disc 65 and the other end is attached to the diaphragm 63.

A check valve 66a is provided at the intake port 66 of the housing 61. The check valve 66a causes air to flow into the housing 61 from the intake port 66, but serves to prevent the air inside the housing 61 from flowing out from the intake port 66. A check valve 67a is provided at the exhaust port 67 of the housing 61. The check valve 67a allows air to flow out from the inside of the housing 61, but serves to prevent air from flowing into the housing 61 from the outside.

The intake process of the pressure reducing pump 13 will be described with reference to FIG. In FIG. 2, the solid line arrow indicates the operating direction of the shaft 64, and the broken line arrow indicates the air flow. When the rotating shaft 62a of the motor 62 rotates in the direction indicated by the arrow (clockwise), the shaft 64 attached to the disk 65 pulls the diaphragm 63 in the direction indicated by the X-axis arrow. As a result, the diaphragm 63 swells, and air flows into the inside of the housing 61 from the intake port 66. On the other hand, on the exhaust port 67 side, the check valve 67a prevents air from entering the inside of the housing 61 from the exhaust port 67.

Subsequently, the exhaust process of the pressure reducing pump 13 will be described with reference to FIG. In FIG. 3, the solid line arrow indicates the operating direction of the shaft 64, and the broken line arrow indicates the air flow. When the rotating shaft 62a of the motor 62 further rotates clockwise from the state shown in FIG. 2, the shaft 64 pushes the diaphragm 63 in the direction opposite to the X-axis arrow. As a result, the diaphragm 63 contracts, and the air inside the housing 61 flows out of the housing 61 from the exhaust port 67. On the other hand, on the intake port 66 side, the check valve 66a prevents the air inside the housing 61 from flowing out from the intake port 66.

The outer lid 9 is provided with a pressure reducing path 14a for connecting the intake port 66 of the pressure reducing pump 13 and the switching valve 11, and an air flow path 16a for connecting the outer lid ventilation hole 15a for communicating with the outside air and the switching valve 11. ing. The exhaust port 67 of the pressure reducing pump 13 is connected to the outer lid ventilation hole 15b via the pressure reducing path 14b. The outer lid ventilation hole 15b is connected to the inside of the cartridge 20. Further, the outer lid 9 is provided with an air flow path 16b that connects the outer lid ventilation hole 15b and the on-off valve 17.

The outer lid 9 is provided with a lid sensor 22 that detects the air pressure and temperature inside the cooking container 5. The lid sensor 22 has a temperature sensor (not shown) that detects the temperature of the air inside the cooking container 5 and a pressure sensor (not shown) that detects the air pressure inside the cooking container 5.

Subsequently, the configuration of the inner lid 7 will be described with reference to FIG. A lid packing 8 that functions as a sealing material is provided on the peripheral edge of the inner lid 7. The lid packing 8 seals the flange portion 5a of the cooking container 5 and the inner wall surface of the inner lid 7. The inner lid 7 is provided with inner lid ventilation holes 10a and 10b penetrating the inner lid 7, and a path packing 12 that functions as a sealing material at positions corresponding to the inner lid ventilation holes 10a and 10b. The inner lid ventilation hole 10a is connected to the switching valve 11 via the path packing 12. The inner lid ventilation hole 10b is connected to the on-off valve 17 via the path packing 12.

Here, the switching operation of the switching valve 11 will be described with reference to FIG. With the lid 25 closed, a path is formed through which the air inside the cooking container 5 flows to the switching valve 11 via the inner lid ventilation hole 10a and the path packing 12. The switching valve 11 has two paths, a first path connected to the intake port 66 of the pressure reducing pump 13 via the pressure reducing path 14a, and a second path connected to the outer lid ventilation hole 15a via the air flow path 16a. One of the routes is connected to the inner lid ventilation hole 10a. When the inner lid ventilation hole 10a is connected to the first path, the inside of the cooking container 5 is depressurized by driving the decompression pump 13. When the inner lid ventilation hole 10a is connected to the second path, the pressure inside the cooking container 5 becomes atmospheric pressure. On the other hand, when the inner lid ventilation hole 10a is not connected to either the first path or the second path, the switching valve 11 switches the inner lid ventilation hole 10a to the closed state St which is not connected to any of the paths. In this case, the air pressure inside the cooking container 5 is maintained. Further, the switching valve 11 may connect the first path and the second path. Even in this case, the inner lid ventilation hole 10a is in the closed state St.

Subsequently, the switching operation of the on-off valve 17 will be described with reference to FIG. The on-off valve 17 switches between an open state in which the inner lid ventilation hole 10b and the outer lid ventilation hole 15b are connected and a closed state in which the inner lid ventilation hole 10b and the outer lid ventilation hole 15b are not connected. When the on-off valve 17 is in the open state, the inner lid vent hole 10b and the outer lid vent hole 15b are connected via the path packing 12 and the on-off valve 17. On the other hand, when the on-off valve 17 is in the closed state, the inner lid ventilation hole 10b and the outer lid ventilation hole 15b are not connected.

Further, a case where the pressure reducing pump 13 keeps the inside of the cooking container 5 below the atmospheric pressure will be described with reference to FIG. It is assumed that the lid body 25 is closed, the inner lid ventilation hole 10a is connected to the first path by the switching valve 11, and the on-off valve 17 is in the closed state. In this case, the inner lid ventilation hole 10a is connected to the intake port 66 of the pressure reducing pump 13 via the switching valve 11 and the pressure reducing path 14a. Therefore, when the decompression pump 13 operates, as described with reference to FIGS. 2 and 3, the drive of the motor 62 is converted into the expansion / contraction motion of the diaphragm 63, and the inside of the cooking container 5 is depressurized. The inside of the cooking container 5 is a space in which the object to be cooked is housed. Explaining with reference to the configuration example shown in FIG. 1, the space in which the object to be cooked is housed is a space surrounded by the cooking container 5 and the inner lid 7. The food to be cooked is, for example, an ingredient such as meat, fish, and vegetables. The food to be cooked may be a seasoning such as salt and sugar, or water used for cooking. In the following, a liquid containing a seasoning and water will be referred to as a seasoning liquid.

Further, the action of the steam discharge valve 18 when the inside of the cooking container 5 is larger than the atmospheric pressure will be described. When the inside of the cooking container 5 is below atmospheric pressure, the holes provided in the inner lid 7 are closed by the steam discharge valve 18 due to the gravity of the steam discharge valve 18 itself. When the inner lid ventilation hole 10a is closed by the switching valve 11 and the on-off valve 17 is closed, when the food to be cooked contained in the cooking container 5 is heated, steam is released from the food to be cooked. appear. When the pressure inside the cooking container 5 exceeds the atmospheric pressure due to the generated steam, the steam pushes the steam discharge valve 18 in the direction opposite to the direction of gravity. When the force with which the steam pushes the steam discharge valve 18 becomes larger than the gravity applied to the steam discharge valve 18, the steam flows into the cartridge 20. The steam that has flowed into the cartridge 20 is discharged to the outside through the steam discharge port 19 provided in the cartridge 20.

Next, the operation display unit 23 shown in FIG. 1 will be described. The operation display unit 23 is provided on the side surface of the main body 1. The operation display unit 23 has, for example, a display device (not shown) for displaying an image and a touch panel (not shown) arranged on the display device (not shown). The touch panel serves as an input interface for the user to input instructions to the cooking cooker 100. The display device displays the detected values of various sensors and the operating state of the cooking cooker 100. In the configuration example shown in FIG. 1, the operation display unit 23 is provided on the side surface of the main body 1, but may be provided on the upper surface of the outer lid 9.

The display device (not shown) provided in the operation display unit 23 is, for example, a liquid crystal display. The display device may be composed of a plurality of LEDs (Light Emitting Diodes). Further, the cooking cooker 100 may have a short-range wireless communication unit (not shown) such as Bluetooth (registered trademark). The heating cooker 100 transmits information to be displayed on the display device of the operation display unit 23 to an information processing terminal (not shown) such as a user's smartphone via the short-range wireless communication unit. In this case, the user can check the operating state of the cooking cooker 100 by looking at the display unit (not shown) of his / her information processing terminal (not shown).

FIG. 4 is a block diagram showing an example of the configuration of the cooking cooker shown in FIG. In addition to the configuration described with reference to FIG. 1, the heating cooker 100 includes an inverter unit 41 that supplies a high-frequency current to the heating unit 3 and a control device 30 that controls the entire heating cooker 100. The detection unit 42 shown in FIG. 4 has a configuration including the pot bottom temperature sensor 4 and the lid sensor 22 shown in FIG. The control device 30 is connected to each of the inverter unit 41, the switching valve 11, the on-off valve 17, and the pressure reducing pump 13 via a signal line (not shown). Further, the control device 30 is connected to the operation display unit 23 via a signal line (not shown in the figure). The control device 30 is connected to each of the pot bottom temperature sensor 4 and the lid sensor 22 shown in FIG. 1 via a signal line (not shown).

Next, the configuration of the control device shown in FIG. 4 will be described. FIG. 5 is a functional block diagram showing a configuration example of the control device shown in FIG. The detection unit 42 shown in FIG. 4 includes a pump temperature detection unit 43 and a motor rotation detection unit 44 shown in FIG. The pump temperature detection unit 43 and the motor rotation detection unit 44 are provided in the decompression pump 13. The pump temperature detection unit 43 is a temperature sensor that detects the temperature of the motor 62 of the decompression pump 13 shown in FIG. The pump temperature detection unit 43 may detect not only the temperature of the motor 62 but also the temperature of the entire decompression pump 13. Hereinafter, the temperature of the motor 62 and the temperature of the entire decompression pump 13 will be referred to as a pump temperature. In the first embodiment, the case where the pump temperature detection unit 43 detects the temperature of the motor 62 will be described. The motor rotation detection unit 44 is a sensor that detects the rotation speed of the motor 62.

The control device 30 includes a storage means 31, a determination means 32, a heating control means 33, a valve control means 34, a pump control means 35, and a timer 36. Various functions of the control device 30 are realized by executing software by an arithmetic unit such as a microcomputer. Further, the control device 30 may be composed of hardware such as a circuit device that realizes various functions. In the configuration shown in FIG. 1, the control device 30 may be provided on the main body 1 or the outer lid 9.

The cooker 100 has a plurality of cooking modes. The storage means 31 controls the combination of conditions such as the air pressure inside the cooking container 5, the pressure rise speed, the cooking time, and the cooking temperature for each cooking mode of the plurality of cooking modes, and the control of each controlled device corresponding to the combination. I remember the contents. The storage means 31 may store the storage mode in addition to the cooking mode. The storage mode is, for example, a mode for keeping the ingredients stored in the cooking container 5 warm after the cooking is completed.

The plurality of cooking modes include, for example, a low temperature boiling mode, a vacuum soaking mode, and a high temperature boiling mode. In the low-temperature boiling mode, the inside of the cooking container 5 is depressurized and the temperature of the inside of the cooking container 5 is adjusted before and after the saturated steam temperature to promote boiling at a temperature of less than 100 ° C., and the inside of the cooking container 5 is steamed. It is a mode to perform low temperature steaming cooking filled with. The reduced pressure soaking mode is a mode in which the inside of the cooking container 5 is repeatedly depressurized and pressurized to atmospheric pressure before cooking to promote the permeation of the seasoning liquid into the food material. The temperature-heating boiling mode is a mode in which the inside of the cooking container 5 is uniformly heated by intermittently repeating depressurization to the saturated vapor pressure and pressurization to the atmospheric pressure while raising the temperature inside the cooking container 5. Is.

When the cooking mode is selected by the user, the determination means 32 reads the selected cooking mode from the storage means 31, and corresponds to the read cooking mode, the heating control means 33, the valve control means 34, and the pump control means. Control 35. Specifically, the determination means 32 transmits the read control information corresponding to the cooking mode to each of the heating control means 33, the valve control means 34, and the pump control means 35.

Further, when the determination means 32 determines that an abnormality has occurred in the decompression pump 13 during the operation of the decompression pump 13, an abnormality occurrence signal indicating that an abnormality has occurred in the decompression pump 13 is sent to the valve control means 34 and the pump control means 35. Send to. The determination means 32 may transmit an abnormality occurrence signal to the heating control means 33. The determination means 32 uses at least one of the pump temperature and the motor rotation speed to determine the presence or absence of an abnormality in the decompression pump 13. The determination means 32 may determine the presence or absence of an abnormality in the decompression pump 13 based on the motor current, which is the current flowing through the motor 62 of the decompression pump 13.

The heating control means 33 controls the heating unit 3 via the inverter unit 41 in response to the control information received from the determination means 32. Specifically, the heating control means 33 controls the energization start timing and energization time of the heating unit 3 in response to the control information. When the heating control means 33 receives the abnormality generation signal from the determination means 32 during the operation of the decompression pump 13, the electric power supplied to the heating unit 3 may be reduced by a predetermined pause time tref. The valve control means 34 controls the switching valve 11 and the on-off valve 17 in response to the control information received from the determination means 32. When the valve control means 34 receives an abnormality occurrence signal from the determination means 32 during the operation of the pressure reducing pump 13, the valve control means 34 controls the switching valve 11 so that the inner lid ventilation hole 10a is in the closed state St for the rest time tref.

The pump control means 35 controls the operation start timing and operation time of the decompression pump 13 in response to the control information received from the determination means 32. When the pump control means 35 receives an abnormality occurrence signal from the determination means 32 during the operation of the decompression pump 13, the pump control means 35 stops the operation of the decompression pump 13 for the pause time tref. Further, the pump control means 35 receives motor current information from the motor 62 at regular intervals during the operation of the decompression pump 13, and transmits the received motor current information to the determination means 32. The timer 36 measures the time and provides the time information to be measured to the determination means 32, the valve control means 34, and the pump control means 35.

Here, an example of the hardware of the control device shown in FIG. 5 will be described. FIG. 6 is a hardware configuration diagram showing a configuration example of the control device shown in FIG. When various functions of the control device 30 are executed by hardware, the control device 30 shown in FIG. 5 is composed of a processing circuit 51 as shown in FIG. The functions of the storage means 31, the determination means 32, the heating control means 33, the valve control means 34, the pump control means 35, and the timer 36 shown in FIG. 5 are realized by the processing circuit 51. The input / output device 52 shown in FIG. 6 corresponds to the operation display unit 23 shown in FIG. 1, and FIG. 6 shows that the processing circuit 51 and the input / output device 52 are communicably connected.

When each function is executed in hardware, the processing circuit 51 may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), or an FPGA (Field-Programmable Gate). It corresponds to Array) or a combination of these. The functions of the storage means 31, the determination means 32, the heating control means 33, the valve control means 34, the pump control means 35, and the timer 36 may be realized by the processing circuit 51, and the functions of the respective means may be realized by one process. It may be realized by the circuit 51.

Further, another example of the hardware of the control device shown in FIG. 5 will be described. FIG. 7 is a hardware configuration diagram showing another configuration example of the control device shown in FIG. When various functions of the control device 30 are executed by software, the control device 30 shown in FIG. 5 is composed of a processor 71 and a memory 72 as shown in FIG. 7. The functions of the storage means 31, the determination means 32, the heating control means 33, the valve control means 34, the pump control means 35, and the timer 36 are realized by the processor 71 and the memory 72. The input / output device 73 shown in FIG. 7 corresponds to the operation display unit 23 shown in FIG. 1, and FIG. 7 shows that the processor 71, the memory 72, and the input / output device 73 are communicably connected to each other.

When each function is executed by software, the functions of the determination means 32, the heating control means 33, the valve control means 34, the pump control means 35 and the timer 36 are realized by software, firmware, or a combination of software and firmware. .. The software and firmware are written as a program and stored in the memory 72. The processor 71 realizes the function of each means by reading and executing the program stored in the memory 72.

As the memory 72, for example, a non-volatile semiconductor memory such as a ROM (Read Only Memory), a flash memory, an EPROM (Erasable and Programmable ROM), and an EPROM (Electrically Erasable and Programmable ROM) is used. Further, as the memory 72, a volatile semiconductor memory of RAM (Random Access Memory) may be used. Further, as the memory 72, a removable recording medium such as a magnetic disk, a flexible disk, an optical disk, a CD (Compact Disc), an MD (Mini Disc), and a DVD (Digital Versaille Disc) may be used.

Next, the operation of the cooking cooker 100 according to the first embodiment will be described. FIG. 8 is a flowchart showing an example of a procedure in which the cooking cooker according to the first embodiment operates in accordance with the selected cooking mode. Here, the case where the cooking mode is the low temperature boiling mode will be described.

First, when the user decides the menu he / she wants to make, he / she puts ingredients such as meat, fish, vegetables, seasonings, and water necessary for the menu into the cooking container 5, and closes the opening of the cooking container 5 with the inner lid 7. Subsequently, the user grips the handle portion 6 of the cooking container 5 and attaches it to the container cover 2. Then, the user attaches the inner lid 7 to the outer lid 9 and closes the lid body 25. When the lid 25 is closed, the outer lid 9 strongly presses the inner lid 7 against the flange portion 5a of the cooking container 5 via the lid packing 8, and the flange portion 5a and the lid packing 8 are sealed. At this time, since the on-off valve 17 is in the open state, the inside of the cooking container 5 is in a state in which the outside air and the air flow through the outer lid ventilation hole 15b.

After closing the lid 25, the user operates the operation display unit 23 to select the cooking mode. At that time, the user may set the cooking conditions by operating the operation display unit 23 as well as the cooking mode. The cooking conditions are, for example, the air pressure inside the cooking container 5, the pressure rise rate, the cooking time, the cooking temperature, and the like. The user may operate the operation display unit 23 to select a storage mode instead of the cooking mode, or may set storage conditions instead of cooking conditions.

When the user operates the operation display unit 23 to select the low temperature boiling mode and inputs the instruction to start cooking (step S101), the determination means 32 reads the information of the low temperature boiling mode from the storage means 31. Then, the determination means 32 transmits the control information set in the low temperature boiling mode to each of the heating control means 33, the valve control means 34, and the pump control means 35 according to the procedure determined in the low temperature boiling mode.

The heating control means 33 starts supplying electric power to the heating unit 3 according to the control information received from the determination means 32 (step S102). The heating unit 3 starts heating the cooking container 5 when the power supply is started. A high-frequency current is supplied to the heating unit 3 from the inverter unit 41, and a high-frequency magnetic field is generated. In the cooking container 5 magnetically coupled to the heating unit 3, the coil and the facing surface of the heating unit 3 are excited, and an eddy current is induced on the bottom surface of the container. Joule heat is generated by this eddy current and the resistance of the cooking container 5, and the bottom surface of the cooking container 5 generates heat, so that the object to be cooked is heated.

The determination means 32 calculates the temperature Tm of the object to be cooked contained in the cooking container 5 from the detected values of the pot bottom temperature sensor 4 and the lid sensor 22. For example, the determination means 32 calculates the average value of the temperature detected by the pot bottom temperature sensor 4 and the temperature detected by the lid sensor 22 as the temperature Tm. The determination means 32 determines whether or not the temperature Tm and the cooking temperature Tk1 are the same (step S103). The cooking temperature Tk1 is, for example, 70 ° C. When the temperature Tm and the cooking temperature Tk1 become the same, the determination means 32 transmits control information to the effect that the heating unit 3 is controlled so that the temperature Tm maintains the cooking temperature Tk1 to the heating control means 33. The heating control means 33 controls the heating unit 3 so that the temperature Tm maintains the cooking temperature Tk1 according to the control information received from the determination means 32 (step S104). The heating control by the heating control means 33 is not limited to the case where the temperature Tm completely matches the cooking temperature Tk1, and it is sufficient that the temperature Tm is maintained in a predetermined range based on the cooking temperature Tk1. ..

Further, when the temperature Tm of the object to be cooked reaches the cooking temperature Tk1 as a result of the determination in step S103, the determination means 32 switches the on-off valve 17 to the closed state, and provides the switching valve 11 with the first path to the inner lid ventilation hole 10a. The control information to the effect that the connection is made to the valve control means 34 is transmitted to the valve control means 34. The valve control means 34 switches the on-off valve 17 to the closed state according to the control information received from the determination means 32, and connects the first path to the switching valve 11 to the inner lid ventilation hole 10a (step S105). By connecting the inner lid ventilation hole 10a to the first path, the inside of the cooking container 5 is connected to the intake port 66 of the pressure reducing pump 13.

Subsequently, the determination means 32 transmits control information to the effect that the decompression pump 13 is started to the pump control means 35. The pump control means 35 starts the decompression pump 13 according to the control information received from the determination means 32 (step S106). The pressure reducing pump 13 discharges the air inside the cooking container 5 to the outside through the outer lid ventilation hole 15b. By operating the pressure reducing pump 13, the pressure inside the cooking container 5 becomes less than the atmospheric pressure.

The determination means 32 causes the pump control means 35 to control the decompression pump 13 so that the air pressure inside the cooking container 5 approaches the saturated vapor pressure of the object to be cooked, for example. When the air pressure inside the cooking container 5 drops and the air pressure inside the cooking container 5 approaches the saturated vapor pressure of the temperature-adjusted object to be cooked, the object to be cooked inside the cooking container 5 starts boiling.

The determination means 32 may calculate a sufficient decompression time for depressurizing the inside of the cooking container 5 from the capacity of the cooking container 5 and the intake flow rate of the decompression pump 13 to an atmospheric pressure at which the effect of cooking under decompression can be obtained. The determination means 32 transmits the control information including the calculated decompression time to the pump control means 35. The pump control means 35 reads the decompression time from the control information, refers to the time measured by the timer 36, and operates the decompression pump 13 for the decompression time.

Further, the determination means 32 controls the decompression pump 13 so as to depressurize the inside of the cooking container 5 with respect to the pump control means 35 until it is determined that the object to be cooked has boiled from the temperature detected by the lid sensor 22. You may let me. Further, the target atmospheric pressure inside the cooking container 5 may be set in advance. In this case, the pump control means 35 may operate the decompression pump 13 until the atmospheric pressure detected by the lid sensor 22 reaches the target atmospheric pressure.

In step S107 shown in FIG. 8, the determination means 32 determines whether or not the temperature Tm is included in the preset temperature zone Tz. When the temperature Tm is included in the temperature zone Tz, the determination means 32 determines whether or not the time t measured by the timer 36 reaches the preset cooking time tv0 (step S108). The determination means 32 controls the heating unit 3 via the heating control means 33 so as to maintain the temperature and atmospheric pressure inside the cooking container 5 until the measured time t reaches the cooking time tv0, and controls the pump. The decompression pump 13 is controlled via the means 35. The display device (not shown) of the operation display unit 23 displays the detected values such as the temperature and atmospheric pressure inside the cooking container 5, the state of the object to be cooked such as boiling and steam states, and the time required for cooking. To do.

In step S108, when the time t reaches the cooking time tv0, the determination means 32 determines that the cooking in the low temperature boiling mode has been completed, and instructs the heating control means 33 and the pump control means 35 to end the control. The heating control means 33 stops the power supply to the heating unit 3, and the pump control means 35 stops the decompression pump 13. The determination means 32 notifies the operation display unit 23 that cooking has been completed (step S109).

In the procedure shown in FIG. 8, the process of step S105 may be before the process of step S104. Further, with reference to FIG. 8, the case where the determination means 32 instructs the valve control means 34 to control the switching valve 11 and the on-off valve 17 after the temperature Tm of the object to be cooked reaches the cooking temperature Tk1 has been described. , The temperature Tm of the object to be cooked may be instructed before reaching the cooking temperature Tk1.

Next, a problem will be described when an abnormality occurs in the decompression pump 13 and the decompression pump 13 suddenly stops. For example, it is a problem that may occur during the operation of steps S106 to S108 shown in FIG.

When the pressure reducing pump 13 starts operating, the load on the motor 62 that expands and contracts the diaphragm 63 increases as the pressure on the intake side of the pressure reducing pump 13 decreases. If the motor 62 is continuously driven under a heavy load, the temperature inside the motor 62 may rise and the operation of the motor 62 may become unstable. The motor current of the motor 62 whose operation has become unstable gradually increases. If the state in which the motor current continues to increase continues, the internal parts of the motor 62 are damaged, and the motor 62 cannot be driven.

The cause of the temperature rise of the pressure reducing pump 13 is not limited to the case where the load of the motor 62 is large. For example, as the temperature around the decompression pump 13 rises, the temperature of the decompression pump 13 may rise. Further, the temperature of the decompression pump 13 may rise due to the steam sucked by the decompression pump 13. Even if the temperature of the decompression pump 13 rises due to these causes, the operation of the decompression pump 13 may become unstable.

If the decompression pump 13 is stopped due to a malfunction, depending on the timing of the stop, the decompression pump 13 may be in a state where air can always flow between the exhaust port 67 connected to the outside air and the intake port 66 connected to the inside of the cooking container 5. There is. In this case, the inside of the cooking container 5 which has maintained the decompression state without being able to maintain the airtightness inside the decompression pump 13 is boosted to atmospheric pressure by connecting with the outside air. As a result, the cooking container 5 cannot maintain the boiling state at a set temperature of less than 100 ° C. If the boiling state cannot be maintained, the heat transfer to the foodstuffs contained in the cooking container 5 drops sharply, and the cooking cannot be finished as expected by the user. As a result, the deliciousness of the food that the user feels is reduced.

Even if the cooked food has not yet reached the boiling state, if the closed state inside the cooking container 5 cannot be maintained, the cooked food is exposed to the outside air, and the temperature of the cooked food is lowered. It will be easier. In this case, extra electric power is required to raise the temperature of the object to be cooked to the temperature required for cooking. Further, if the closed state inside the cooking container 5 cannot be maintained during the storage of the food material after cooking, the outside air may flow into the inside of the cooking container 5 and the state of the food material may be deteriorated.

Therefore, in the heating cooker 100 of the first embodiment, when an abnormality occurs in the decompression pump 13, the decompression pump 13 is stopped before the decompression pump 13 is completely stopped. At that time, the cooking container 100 closes the cooking container 5 before stopping the decompression pump 13. Specifically, when an abnormality occurs in the pressure reducing pump 13, the heating cooker 100 controls the switching valve 11 to block the path between the intake port 66 of the pressure reducing pump 13 and the inside of the cooking container 5 to block the cooking container. Seal 5 tightly. After that, the cooking cooker 100 stops driving the decompression pump 13 and pauses for a predetermined time.

With reference to FIG. 9, an example of control performed by the cooking cooker 100 when an abnormality occurs in the pressure reducing pump 13 will be described. FIG. 9 is a flowchart showing an example of an operation procedure when an abnormality occurs in the decompression pump in the cooking apparatus according to the first embodiment. Here, since the pressure reducing pump 13 is in operation, the inner lid ventilation hole 10a is connected to the first path, and the on-off valve 17 is in the closed state.

The determination means 32 determines whether or not an abnormality occurs in the pressure reducing pump 13 at regular time intervals (step S201). For example, in step S201, the determination means 32 determines whether or not the motor current flowing through the motor 62 is equal to or greater than a predetermined current threshold value Cth. When the motor current is less than the current threshold value Cth, the determination means 32 determines that no abnormality has occurred in the decompression pump 13. On the other hand, when the motor current is equal to or higher than the current threshold value Cth, the determination means 32 determines that an abnormality has occurred in the decompression pump 13.

When an abnormality has occurred in the pressure reducing pump 13, the determination means 32 transmits an abnormality occurrence signal to the valve control means 34. When the valve control means 34 receives the abnormality occurrence signal from the determination means 32, the valve control means 34 switches the inner lid ventilation hole 10a from the state of being connected to the first path to the closed state St in order to seal the cooking container 5. 11 is controlled (step S202). Subsequently, the determination means 32 transmits an abnormality occurrence signal to the pump control means 35. When the pump control means 35 receives the abnormality occurrence signal from the determination means 32, the pump control means 35 stops the decompression pump 13 (step S203).

When the operation of the pressure reducing pump 13 becomes unstable, the inside of the motor 62 is cooled by stopping the operation for a certain period of time before the internal parts of the motor 62 are damaged. If it is a minor abnormality, the motor 62 can return to the normal driving state by restarting after the inside is cooled. The pause time tref from the stop of the motor 62 to the return is, for example, 10 minutes. As the rest time tref, the time from when the temperature of the motor 62 rises once to when it falls to a temperature that does not interfere with normal operation is set in advance. The rest time tref is stored in the storage means 31.

The pump control means 35 refers to the time t measured by the timer 36, and determines whether or not the time t reaches the rest time tref (step S204). When the time t reaches the rest time tref, the pump control means 35 restarts the decompression pump 13 (step S205). Subsequently, the valve control means 34 connects the inner lid ventilation hole 10a to the first path in order to connect the inside of the cooking container 5 to the intake port 66 of the pressure reducing pump 13 when the pressure reducing pump 13 is restarted. The switching valve 11 is controlled (step S206). By connecting the inner lid ventilation hole 10a to the first path, the inside of the cooking container 5 is depressurized again by the decompression pump 13. After step S206, the determination means 32 returns to step S201.

With reference to FIG. 9, in step S201, the determination means 32 compares the motor current with the current threshold value Cth to determine the presence or absence of an abnormality in the pressure reducing pump 13, but the parameter used for determining the presence or absence of an abnormality is the motor current. Not limited to. The parameter used for determining the presence or absence of an abnormality may be the pump temperature or the motor rotation speed.

FIG. 10 is a diagram showing time-series changes of various parameters by the control shown in FIG. FIG. 10 shows the time-series changes of the five parameters with the horizontal axis as time. The uppermost graph of FIG. 10 shows the state of whether or not the decompression pump 13 is driven, and the second graph from the uppermost part shows the change of the motor current. The third graph from the top of FIG. 10 shows the change in the rotational speed of the motor 62, and the fourth graph from the top shows the change in the pump temperature. The graph at the bottom of FIG. 10 shows the change in air pressure inside the cooking container 5. The time t1 indicates when the decompression pump 13 is stopped, and the time t2 indicates when the decompression pump 13 is restarted.

From the graph at the top of FIG. 10, as described with reference to FIG. 9, it can be seen that the determination means 32 can determine the presence or absence of an abnormality in the pressure reducing pump 13 based on the motor current. Further, when the rotation speed of the motor 62 is used as the determination criterion, the determination means 32 determines whether or not an abnormality has occurred in the pressure reducing pump 13 by comparing the rotation speed with the predetermined rotation speed threshold value Rth. To do. When the rotation speed of the motor 62 is equal to or less than the rotation speed threshold value Rth, the determination means 32 determines that an abnormality has occurred in the pressure reducing pump 13. Further, when the pump temperature is used as the determination criterion, the determination means 32 determines whether or not an abnormality has occurred in the decompression pump 13 by comparing the pump temperature with the predetermined temperature threshold value Tth. When the pump temperature is equal to or higher than the temperature threshold value Tth, the determination means 32 determines that an abnormality has occurred in the decompression pump 13.

As shown in FIG. 10, the determination means 32 stops the decompression pump 13 when the temperature of the motor 62 becomes equal to or higher than the temperature threshold value Tth when the abnormality of the decompression pump 13 is caused by the temperature rise of the motor 62. Further, when the motor 62 is the cause of the unstable operation of the pressure reducing pump 13, not only the rotation speed of the motor 62 decreases, but also the rotation speed of the motor 62 per unit time decreases. Therefore, the unstable operation of the motor 62 can be detected by the rotation speed of the motor 62 per unit time. A non-contact type rotation speed detection sensor (not shown) may be provided in advance on the motor 62. The determination means 32 can determine the presence or absence of an abnormality in the pressure reducing pump 13 by comparing the detection value of the rotation speed detection sensor with a predetermined rotation speed threshold value. The rotation speed threshold value is a value that serves as a criterion for determining whether or not the motor 62 is abnormal with respect to the rotation speed per unit time of the motor 62.

As shown in the graph at the bottom of FIG. 10, the pressure inside the cooking container 5 rises from time t1 with the passage of time, but reaches time t2 before reaching the atmospheric pressure Patm, and the pressure in the cooking container 5 increases. Internal decompression is resumed. Therefore, it is avoided that the pressure inside the cooking container 5 becomes the atmospheric pressure Patm.

In step S204 shown in FIG. 9, until the time t reaches the rest time tref, the heating control means 33 supplies the electric power to the heating unit 3 before it is determined that the pressure reducing pump 13 has an abnormality. It may be smaller than the electric power supplied to the heating unit 3. In this case, the generation of steam from the object to be cooked is suppressed, and the depressurized state inside the cooking container 5 is maintained for a longer period of time.

As described with reference to FIG. 9, when the heating cooker 100 detects an abnormality in the decompression pump 13, a space in which the object to be cooked is accommodated before the decompression pump 13 fails and completely stops. Is sealed, and then the pressure reducing pump 13 is stopped. Therefore, when the decompression pump 13 is stopped, the increase in air pressure in the space where the food to be cooked is accommodated is suppressed.

Further, while the heating cooker 100 stops the decompression pump 13 for the rest time tref to promote the return of the decompression pump 13, the airtightness of the space in which the food to be cooked is accommodated is maintained. Therefore, the decompression state of the space in which the object to be cooked is housed is maintained during the rest time tref, and after the decompression pump 13 is restarted, the cooking cooker 100 can continue cooking while maintaining the decompression state. Further, even if an abnormality occurs in the pressure reducing pump 13, if the pressure reducing pump 13 continues to operate, it completely breaks down, but it is possible to prevent such a situation from occurring. This is because when an abnormality is detected, the decompression pump 13 is stopped for the rest time tref, so that the cause of the abnormality disappears or the cause of the abnormality is reduced.

The determination means 32 may count the number of times the abnormality of the decompression pump 13 is detected, and store the history of the number of times of the detected abnormality in the storage means 31. In this case, when the number of times recorded in the history exceeds a predetermined number of times, the determination means 32 may notify the user of a message prompting the inspection of the decompression pump 13 via the operation display unit 23.

Further, in the first embodiment, the case where the motor 62 is naturally cooled while the decompression pump 13 is stopped has been described, but a cooling fan (not shown) may be provided near the decompression pump 13. The determination means 32 operates the cooling fan while the pressure reducing pump 13 is stopped. In this case, the cooling to the pressure reducing pump 13 is promoted, the cooling effect is enhanced, and the rest time tref can be shortened.

The cooking device 100 of the first embodiment includes a cooking container 5, a lid 25 that covers the opening of the cooking container 5 and is provided with an inner lid ventilation hole 10a connected to the inside of the cooking container 5, and a heating unit. 3. It has a pressure reducing pump 13 for depressurizing the inside of the cooking container 5, a switching valve 11, and a control device 30. The switching valve 11 switches between a state in which the inner lid ventilation hole 10a is connected to the intake port 66 of the pressure reducing pump 13 and a closed state St. The control device 30 includes a determination means 32 for determining whether or not the pressure reducing pump 13 has an abnormality, a valve control means 34, and a pump control means 35. When the determination means 32 determines that the pressure reducing pump 13 has an abnormality, the valve control means 34 controls the switching valve 11 so that the inner lid ventilation hole 10a maintains the closed state St for the rest time tref. The pump control means 35 stops the decompression pump 13 while the inner lid ventilation hole 10a is in the closed state St.

According to the first embodiment, when an abnormality of the decompression pump 13 is detected, the space for accommodating the food to be cooked and the path connecting the decompression pump 13 are blocked, so that the decompression pump 13 is stopped. During this time, the airtightness of the space in which the food to be cooked is housed is maintained. Therefore, it is possible to suppress an increase in the air pressure in the space where the object to be cooked is accommodated while the decompression pump 13 is stopped, and to suppress the influence of the decompression pump 13 on the object to be cooked.

Next, in the first embodiment, a configuration for preventing an abnormality from occurring in the pressure reducing pump 13 will be described. By sucking the steam in the cooking container 5 during cooking, the decompression pump 13 may cause moisture to adhere to the decompression paths 14a and 14b and the inside of the decompression pump 13. Adhesion of water to the internal parts of the decompression pump 13 affects the flow rate of the decompression pump 13 and the airtightness inside the decompression pump 13, leading to deterioration of the decompression performance.

Since the pump control means 35 in the first embodiment discharges the water inside the decompression pump 13 and the water in the decompression paths 14a and 14b, the decompression pump is used even after the cooking is completed and the inside of the cooking container 5 is depressurized. A drying operation for operating 13 is performed. When the pump control means 35 causes the pressure reducing pump 13 to perform a drying operation, the valve control means 34 controls the switching valve 11 so as to connect the first path and the second path. As a result, the intake port 66 of the pressure reducing pump 13 and the outer lid ventilation hole 15a are connected.

The decompression pump 13 circulates the outside air sucked from the outer lid ventilation hole 15a through the air flow path 16a and the decompression path 14a, and then discharges the outside air from the outer lid ventilation hole 15b via the inside of the decompression pump 13 and the decompression path 14b. .. As a result, the outside air flows inside the decompression pump 13 and the decompression paths 14a and 14b. Since the outside air is drier than the inside of the cooking container 5, the moisture adhering to the inside of the decompression pump 13 and the decompression paths 14a and 14b is discharged from the outer lid ventilation hole 15b. Moisture extruded by air from the inside of the decompression pump 13 and the decompression paths 14a and 14b is discharged from the outer lid ventilation hole 15b and held in the cartridge 20. In addition to the cartridge 20, a drainage container (not shown) for holding water may be separately provided at a place other than the cartridge 20 so that the outer lid ventilation hole 15b is connected to the drainage container.

Further, the exhaust port 67 of the decompression pump 13 is arranged so as to face the direction of gravity with the outer lid 9 open so that drainage can be smoothly performed from the decompression pump 13 when the outer lid 9 is open. Further, the intake port 66 and the exhaust port 67 are arranged so that the exhaust port 67 is below the intake port 66 of the pressure reducing pump 13 when the outer lid 9 is closed. In this case, the moisture inside the decompression pump 13 is easily discharged by gravity.

Further, it is desirable that the distance between the cartridge 20 and the water holding container such as the drainage container (not shown) described above and the decompression pump 13 is as short as possible. For example, when the water holding container is arranged behind the cooking container 5, if the decompression pump 13 is also arranged behind the water holding container, the path connecting the decompression pump 13 and the water holding container becomes short. Drainage is easily promoted. In FIG. 1, for the sake of explanation, the exhaust port 67 extends upward from the main body of the decompression pump 13, but for drainage, the exhaust port 67 and the outer lid ventilation hole 15b are provided. It is desirable that the outer lid ventilation hole 15b is arranged at the same height or at a position lower than the exhaust port 67. Further, it is desirable that the path connecting the exhaust port 67 and the outer lid ventilation hole 15b is gradually inclined from the exhaust port 67 toward the outer lid ventilation hole 15b. According to this configuration, drainage from the decompression pump 13 is further promoted.

1 main body, 2 container cover, 2a holding part, 3 heating part, 4 pot bottom temperature sensor, 4a compression spring, 4b hole part, 5 cooking container, 5a flange part, 6 handle part, 7 inner lid, 8 lid packing, 9 outer Lid, 10a, 10b Inner lid vent, 11 switching valve, 12 path packing, 13 decompression pump, 14a, 14b decompression path, 15a, 15b outer lid vent, 16a, 16b air flow path, 17 on-off valve, 18 steam discharge Valve, 19 steam outlet, 20 cartridge, 21 cartridge packing, 22 lid sensor, 23 operation display, 25 lid, 30 control device, 31 storage means, 32 judgment means, 33 heating control means, 34 valve control means, 35 Pump control means, 36 timer, 41 inverter unit, 42 detector unit, 43 pump temperature detector unit, 44 motor rotation detector unit, 51 processing circuit, 52 input / output device, 61 housing, 62 motor, 62a rotation shaft, 63 diaphragm, 64 shaft, 65 disc, 66 intake port, 66a check valve, 67 exhaust port, 67a check valve, 71 processor, 72 memory, 73 input / output device, 100 cooker.

Claims (6)

A cooking container that houses the food to be cooked
A lid having a vent that covers the opening of the cooking container and is connected to the inside of the cooking container.
A heating unit that heats the object to be cooked,
A decompression pump that decompresses the inside of the cooking container, which is a space in the cooking container in which the object to be cooked is housed.
A switching valve that switches between a state in which the ventilation hole is connected to the intake port of the pressure reducing pump and a state in which the ventilation hole is closed.
A control device that controls the heating unit, the pressure reducing pump, and the switching valve,
Have,
The control device is
A determination means for determining whether or not there is an abnormality in the decompression pump, and
When the determination means determines that the pressure reducing pump has an abnormality, the valve control means that controls the switching valve so that the ventilation holes maintain the closed state for a predetermined time.
The switching valve is switched by the valve control means, and the pump control means for stopping the pressure reducing pump while the ventilation hole is in the closed state.
Cooker. The determination means
The motor current flowing through the motor of the decompression pump is compared with a predetermined current threshold value, and when the motor current is equal to or greater than the current threshold value, it is determined that the decompression pump has an abnormality.
The heating cooker according to claim 1. It further has a pump temperature detection unit that detects the temperature of the decompression pump.
The determination means
The temperature detected by the pump temperature detection unit is compared with a predetermined temperature threshold value, and when the temperature is equal to or higher than the temperature threshold value, it is determined that the decompression pump has an abnormality.
The heating cooker according to claim 1. It further has a motor rotation detection unit that detects the rotation speed of the motor of the pressure reducing pump.
The determination means
The rotation speed detected by the motor rotation detection unit is compared with a predetermined rotation speed threshold value, and when the rotation speed is equal to or less than the rotation speed threshold value, it is determined that the pressure reducing pump has an abnormality.
The heating cooker according to claim 1. The pump control means restarts the decompression pump when the predetermined time has elapsed, and the pump control means restarts the decompression pump.
The valve control means controls the switching valve so that the vent is connected to the intake port after the pressure reducing pump is restarted.
The cooking device according to any one of claims 1 to 4. The control device further includes a heating control means for controlling the heating unit.
The heating control means
While the ventilation hole is in the closed state, the electric power supplied to the heating unit is made smaller than the electric power supplied to the heating unit before the pressure reducing pump is determined to be abnormal.
The cooking cooker according to any one of claims 1 to 5.

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