JPWO2020054516A1 - Cooking device - Google Patents

Abstract

The purpose is to realize a cooker that can properly set the inner lid on the inner pot and perform cooking properly. The cooker (1) includes a reed switch (51) and a magnet (52) for detecting whether or not the inner lid (22) is set in a predetermined position for covering the inner pot (4).

Description

The present invention relates to a cooker in which a lid for covering the cooker body is composed of an outer lid and an inner lid.

Generally, there is a rice cooker as a cooker that has an inner pot and is used by covering the inner pot with a lid. The inner lid of the rice cooker is attached to the outer lid constituting the outer shell of the product, for example, like the rice cooker disclosed in Patent Document 1.

Japanese Patent Publication "Japanese Patent Laid-Open No. 2008-206562 (published on September 11, 2008)"

By the way, in the rice cooker disclosed in Patent Document 1, an inner lid for covering the inner pot is attached to the outer lid, and the inner lid opens the inner pot in conjunction with the opening of the outer lid. There is. At this time, the dew condensation water on the inner lid surface may drip around the inner pot or the inner pot. That is, when the outer lid is opened, there arises a problem that the dew condensation water on the inner lid surface drips around the inner pot and the inner pot.

Therefore, it is conceivable to configure the outer lid and the inner lid so as to be separable so that the inner lid maintains the state in which the inner lid is closed when the outer lid is opened. In this case, when the outer lid is opened, the inner lid does not come off together, so that the problem of dripping dew condensation water on the inner lid does not occur.

However, since the outer lid and inner lid are separated and removed, there is a risk that the inner lid may be forgotten to be set in the inner pot, or the cooker body may be covered with only the outer lid to start cooking. There is. In such a case, there arises a problem that cooking cannot be performed properly.

One aspect of the present invention is to realize a cooker capable of properly setting an inner lid in an inner pot and performing cooking appropriately.

In order to solve the above problems, the cooker according to one aspect of the present invention includes a cooker main body, an inner lid that covers the opening of the cooker main body, and the cooker so as to cover the inner lid. It is characterized by including an outer lid that is detachably provided on the main body, and an inner lid detection unit that detects whether or not the inner lid is set at a predetermined position for covering the opening. It is said.

According to one aspect of the present invention, the inner lid can be securely set in the inner pot and cooking can be performed appropriately.

The rice cooker according to the first embodiment of the present invention is shown, (a) is a perspective view of the rice cooker with a lid, and (b) is an exploded perspective view of the rice cooker of (a). It is a cross-sectional view taken along the line AA of FIG. 1 (a). It is a figure which shows the detection part of the inner lid of the rice cooker shown in FIG. It is a schematic block diagram of the control circuit on the lid main body side of the rice cooker shown in FIG. It is a schematic block diagram of the control circuit on the cooker main body side of the rice cooker shown in FIG. It is a figure for demonstrating the cooking mode in the rice cooker which concerns on Embodiment 2 of this invention. It is a flowchart which shows the flow of the cooking control by the presence or absence of the inner lid in the rice cooker shown in FIG.

[Embodiment 1]
Hereinafter, one embodiment of the present invention will be described in detail. In this embodiment, a rice cooker will be described as an example of the cooker.

(Outline of rice cooker)
1A and 1B show a rice cooker 1 according to the first embodiment, FIG. 1A shows a perspective view of a rice cooker with a lid, and FIG. 1B shows an exploded perspective view of the rice cooker of (a). FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 (a).

As shown in FIG. 1A, the rice cooker 1 includes a rice cooker main body (cooker main body) 3 and a lid 2 attached to the upper part of the rice cooker main body 3. As shown in FIG. 1B, the lid 2 can be completely separated from the rice cooker main body 3. The rice cooker 1 is configured to be used not only for cooking rice but also for cooking simmered foods and steamed foods.

The lid 2 is provided with a UI unit 8 for performing a rice cooking operation of the rice cooker 1. The UI unit 8 is composed of a display unit 8a composed of a touch panel type liquid crystal display panel and an operation unit 8b including operation buttons and the like operated by the user. As a result, the user can perform the rice cooking operation of the rice cooker 1 by touching the operation buttons and the like displayed on the liquid crystal display panel. A touch panel type organic EL panel may be used instead of the touch panel type liquid crystal display panel.

The operation unit 8b needs to supply electric power and transmit / receive a control signal for controlling the rice cooker 1. The electric power is supplied from the rice cooker main body 3. Further, the transmission / reception of the control signal is performed between the lid 2 and the rice cooker main body 3. Generally, these power supply and control signal transmission / reception are performed by wire. However, in the rice cooker 1 according to the present embodiment, since the lid 2 is configured to be completely separate from the rice cooker main body 3, power is supplied by wireless power supply, and control signals such as cooking signals by non-contact communication are transmitted and received. Is supposed to do. Wireless power supply is performed between the wireless power supply unit 5a of the lid 2 and the wireless power supply 5b of the rice cooker body 3, and non-contact communication is non-contact communication between the non-contact communication unit 6a of the lid 2 and the rice cooker body 3. It is performed with the contact communication unit 6b. Details of wireless power supply and non-contact communication will be described later.

By realizing wireless power supply and non-contact communication in this way, it is possible to eliminate the wiring that was conventionally required, and thus it is possible to eliminate the restrictions on the design due to the wiring. Therefore, it is possible to realize the rice cooker 1 with priority on design.

(Cover 2)
The lid 2 is composed of an outer lid 21 that covers the upper surface of the rice cooker main body 3 and an inner lid 22 that covers the inner pot 4. Here, as shown in FIG. 1B, the inner lid 22 is formed completely independently of the outer lid 21, and when the outer lid 21 is removed from the rice cooker main body 3, it is attached to the inner pot 4. It remains covered. Further, in the present embodiment, the inner lid 22 is formed by die-casting aluminum.

When the rice cooker main body 3 is to be covered, the lid 2 is set so that the inner lid 22 first covers the inner pot 4 and the outer lid 21 covers the inner lid 22 from above. On the surface of the inner lid 22, a knob portion 23 that protrudes in a substantially columnar shape is formed so that the user can pick it up. Further, the outer lid 21 has an opening into which the knob portion 23 of the inner lid 22 is fitted when the inner lid 22 is set at a predetermined position of the rice cooker main body 3 with the inner lid 22 covered. A part (not shown) is formed. That is, when the lid 2 is set in the rice cooker main body 3, the opening of the outer lid 21 is fitted into the knob portion 23 of the inner lid 22 that covers the inner pot 4. This position is the proper position where the lid 2 is set in the rice cooker main body 3.

Normally, when rice cooking is started by the rice cooker 1, steam is generated in the inner pot 4. A steam hole 21a is provided in the lid 2 in order to release the steam generated in the inner pot 4.

The information displayed on the display unit 8a provided on the lid 2 and the touched touch signal are transmitted by non-contact communication between the lid 2 and the rice cooker main body 3 as described above. Further, the power is supplied to the UI unit 8 by wireless power supply between the lid 2 and the rice cooker main body 3 as described above.

(Wireless power supply, non-contact communication)
In order to realize wireless power supply, the lid 2 is provided with a wireless power supply unit 5a, and the rice cooker main body 3 is provided with a wireless power supply unit 5b. As shown in FIG. 2, the wireless power feeding unit 5a and the wireless power feeding unit 5b supply electric power from the rice cooker body 3 side to the lid 2 in a state where the lid 2 is set at a predetermined position of the rice cooker body 3. It is provided in a position where it can be done.

On the other hand, in order to realize non-contact communication, the lid 2 is provided with a non-contact communication unit 6a, and the rice cooker main body 3 is provided with a non-contact communication unit 6b. As shown in FIG. 2, the non-contact communication unit 6a and the non-contact communication unit 6b are between the lid 2 and the rice cooker body 3 with the lid 2 set at a predetermined position of the rice cooker body 3. It is provided at a position where information can be sent and received.

In this embodiment, an electromagnetic induction method is used as wireless power supply, and an infrared communication (IR) transmission method is used as non-contact communication. However, wireless power supply and non-contact communication are not limited to these methods, and power supply and information transmission / reception can be appropriately performed wirelessly with the lid 2 set at a predetermined position on the rice cooker body 3. Any method may be used as long as it is a method.

As shown in FIG. 2, the rice cooker main body 3 is provided with an induction coil 7 for inductively heating the inner pot 4. The induction coil 7 is an example of a heating unit. As shown in FIG. 2, the rice cooker main body 3 has a cooling fan 9, a power supply board 10, and a power cord that is wound around a cord reel so as to be able to be pulled out. 11. A bottom thermistor 12 for detecting the temperature of the inner pot 4 is provided.

Rice, water, etc. as an example of the contents are stored in the inner pot 4. The inner pot 4 is formed of a high thermal conductive material such as aluminum, and a magnetic material such as stainless steel that improves heating efficiency is attached to the outer surface thereof, while a fluororesin is coated on the inner surface to prevent the contents from adhering to the inner surface. Has been done.

In the rice cooker 1 having the above configuration, rice cannot be cooked properly unless the inner lid 22 that covers the inner pot 4 is set at an appropriate position. Therefore, it is necessary to detect whether or not the inner lid 22 is set at an appropriate position. The detection of the inner lid 22 will be described below.

(Detection of inner lid 22)
FIG. 3 is a schematic view showing a state in which the outer lid 21 is removed from the rice cooker 1 shown in FIG.

As shown in FIG. 3, a reed switch 51 is provided on the rice cooker body 3 so that the inner lid 22 functions as a switch when the inner lid 22 is set at a predetermined position of the rice cooker body 3, that is, at an appropriate position during rice cooking. A magnet 52 is provided at a position of the inner lid 22 facing the reed switch 51. As a result, if the inner lid 22 is set at an appropriate position on the rice cooker main body 3, the reed switch 51 is turned on by the magnet 52 and a detection signal is output. On the other hand, if the inner lid 22 is not set at an appropriate position of the rice cooker main body 3, the reed switch 51 is not turned on by the magnet 52, and the detection signal is not output. By outputting the detection signal from the reed switch 51 in this way, it is detected that the inner lid 22 is set at an appropriate position of the rice cooker main body 3. Therefore, the reed switch 51 and the magnet 52 function as an inner lid detecting unit for detecting whether or not the inner lid 22 is set at a predetermined position for covering the inner pot 4.

The detection timing by the inner lid detection unit is the timing at which the outer lid 21 is set at a predetermined position on the rice cooker main body 3. That is, when the outer lid 21 is set at a predetermined position on the rice cooker main body 3, the inner lid detection unit detects whether or not the inner lid 22 is set at a predetermined position. Specifically, the detection of whether or not the outer lid 21 is set at a predetermined position (outer lid detection) is performed by looking at the communication state of the non-contact communication units 6a and 6b and the power supply state of the wireless power supply units 5a and 5b. The CPU (outer lid detection unit) 40 on the rice cooker main body 3 side determines. If the CPU 40 determines from the communication state and the power supply state that the outer lid 21 is set at a predetermined position, the CPU 40 sends the determination result as a detection signal to the inner lid detection unit. That is, the CPU 40 sends a detection signal to the reed switch 51 constituting the inner lid detection unit, and energizes the reed switch 51. That is, when the reed switch 51 receives a detection signal from the CPU 40 indicating that the outer lid 21 is set at the predetermined position, the reed switch 51 is energized to detect whether or not the inner lid 22 is set at the predetermined position. NS.

(Control system)
The control system of the rice cooker 1 will be described. FIG. 4 is a block diagram showing a configuration of a control circuit provided on the lid body 2. FIG. 5 is a block diagram showing a configuration of a control circuit provided in the rice cooker main body 3.

First, the control circuit of the lid 2 will be described. As shown in FIG. 4, the lid 2 includes a CPU 30, a ROM (Read Only Memory) 34, and a RAM (Random Access Memory) 35 as main parts of the control system. Further, the CPU 30 is connected to a cooking control unit 33, a non-contact communication unit 6a, a wireless power feeding unit 5a, a communication state determination unit 31, a power measurement unit 32, and a UI unit 8.

The CPU 30 controls each unit by executing a control program stored in the ROM 34. Specifically, the CPU 30 controls the display of the UI unit 8, accepts operations, controls the cooking control unit 33 to instruct cooking control, and determines the communication state of the non-contact communication unit 6a by the communication state determination unit 31. The power measurement unit 32 controls the wireless power supply unit 5a to determine the power supply state.

The inner lid 22 is provided with a lid heater 13 for heating the lid itself and a lid thermistor 14 for measuring the temperature of the lid. The lid heater 13 and the lid thermistor 14 are connected to the CPU 30 to control the temperature of the lid heater 13.

Next, the control circuit of the rice cooker main body 3 will be described. As shown in FIG. 5, the rice cooker main body 3 includes a CPU 40, a ROM 44, and a RAM 45 as main parts of the control system. Further, the CPU 40 is connected to a non-contact communication unit 6b, a wireless power feeding unit 5b, a communication state determination unit 41, an induction coil 7, a UI unit 24, and a reed switch 51.

The CPU 40 controls each unit by executing a control program stored in the ROM 44. Specifically, the CPU 40 receives an instruction signal from the cooking control unit 33 of the lid 2 by the non-contact communication unit 6b to control the on / off of the induction coil 7 and the non-contact communication unit by the communication state determination unit 41. The communication state determination control of 6b, the power supply control of the wireless power supply unit 5b, and the like are performed. Further, the CPU 40 performs display control of the UI unit 24, acceptance of operations, control of instructing the cooking control unit 33 of cooking control, and heating control by the induction coil 7 by the bottom thermistor 12. Here, the cooking control unit 33 controls from the start to the stop of cooking.

A power supply 42 is connected to the wireless power feeding unit 5b. The power supply 42 realizes conversion from a commercial power supply supplied by plugging a power cord wound around a cord reel built in the rice cooker body 3 into a household outlet into a voltage for wireless power supply. doing.

(effect)
According to the rice cooker 1 having the above configuration, it is possible to detect whether or not the inner lid 22 is set at an appropriate position of the rice cooker main body 3, so that the inner lid 22 may be forgotten to be set or the rice cooker may be used only with the outer lid 21. There is no risk of putting a lid on the main body 3 and starting rice cooking. This has the effect that the inner lid 22 can be reliably set on the rice cooker main body 3 (inner pot 4) and cooking can be performed appropriately.

The inner lid 22 may be detected by using a magnetic sensor (Hall element or the like) that detects a magnetic field, or by using an infrared method, a mechanical switch method, or the like, in addition to the method using the reed switch described above. You may. For example, in the case of the infrared method, an infrared light emitting element is provided instead of the reed switch 51 of the rice cooker main body 3, and the inner lid 22 is detected by the difference in the amount of infrared reflected light when the inner lid 22 is present and when it is not present. good. Further, if power can be supplied to the inner lid 22, an infrared light receiving element may be provided instead of the magnet 52 of the inner lid 22, and the inner lid 22 may be detected depending on whether or not the infrared light receiving element receives infrared rays. In this case, if the inner lid 22 is set at an appropriate position, the light receiving element receives infrared rays, and if the inner lid 22 is not set at an appropriate position, the light receiving element does not receive infrared rays.

In addition to the cooking mode (cooking mode with a lid) in which the rice cooker 1 according to the first embodiment is cooked with the lid covered by the lid 2, the rice cooker 1 has the lid 2 removed, that is, the inner pot 4. A cooking mode (cooking mode without a lid) for cooking without a lid on the opening can be executed. In the second embodiment below, a cooking mode with a lid and a cooking mode without a lid will be described.

[Embodiment 2]
(Cooking mode)
6A and 6B are views for explaining the cooking mode, FIG. 6A is a diagram for explaining cooking mode A when the lid is attached to the rice cooker main body, and FIG. 6B is a diagram for explaining the cooking mode A when the lid is attached to the rice cooker main body. It is a figure for demonstrating the cooking mode B when it is removed from.

In the rice cooker 1 of the present embodiment, in addition to the UI portion 8 of the lid 2, the rice cooker main body 3 is also provided with the UI portion 24. Therefore, as shown in FIG. 6, cooking mode A (cooking mode with a lid) when the lid 2 is attached to the rice cooker body 3 and cooking mode B when the lid 2 is removed from the rice cooker body 3 (Cooking mode without lid) and can be executed.

By the way, as shown in FIG. 6B, in the cooking mode without a lid, the temperature outside the rice cooker body 3 is easily affected. The relationship with the actual temperature inside the rice cooker 4 is different from that of the cooking mode with a lid shown in FIG. 6A. Therefore, in order to properly control the cooking temperature for the same cooking menu, the relationship between the perceived temperature of the bottom thermistor 15 and the actual temperature inside the inner pot 4 in the cooking mode without a lid and the cooking mode with a lid. It is necessary to prepare temperature tables showing the above and switch the temperature table depending on the presence or absence of the lid. That is, it is necessary to change at least one of the sensed temperature of the bottom thermistor 15 at the time of temperature control, the output of the induction coil 7 (heating temperature), and the heating time by the induction coil 7 depending on the presence or absence of the lid.

Further, when the lid heater 13 and the lid thermistor 14 are provided on the inner lid 22 of the lid body 2 as in the present embodiment, the temperature control sequence is as follows: the lid heater 13, the lid thermistor 14, the induction coil 7, and the bottom thermistor. 15 is used. However, when the inner lid 22 is removed, the lid heater 13 and the lid thermistor 14 cannot be used, so that the induction coil 7 and the bottom thermistor 15 are used in the temperature control sequence. Therefore, it is necessary to prepare two types of temperature control sequences depending on the presence or absence of the lid and switch between them. That is, the rice cooker 1 in the present embodiment has different temperature control during cooking between the cooking mode with a lid and the cooking mode without a lid.

The temperature control according to the presence or absence of the lid will be described below.

(Temperature control)
FIG. 7 is a flowchart showing the flow of temperature control according to the presence or absence of the lid.

First, the presence or absence of the outer lid 21 is determined (step S11). Here, the presence or absence of the outer lid 21 is determined by whether or not wireless power supply and non-contact communication between the outer lid 21 and the rice cooker main body 3 are possible.

If it is determined (Yes) that the outer lid 21 is present in step S11, the process proceeds to step S12 to determine the presence or absence of the inner lid 22. Here, the presence or absence of the inner lid 22 is determined by the magnet 52 provided in the inner lid 22 and the reed switch 51 provided in the rice cooker main body 3.

If it is determined in step S12 that the inner lid 22 is present (Yes), normal cooking is executed (step S13). Here, normal cooking is realized by operating the UI portion 8 of the lid body 2. Here, the normal cooking is cooking in which the temperature is controlled during cooking in the cooking mode with a lid (the same cooking as in steps S16 and 17 described later).

On the other hand, if it is determined (No) that there is no inner lid 22 in step S12, an error is displayed on the UI unit 8 (step S14). In this case, it is an error display for notifying the user that the inner lid 22 is not set. At the same time, a notification sound may be sounded to notify that cooking cannot be started without the inner lid 22. That is, when it is detected that the inner lid 22 is not set at a predetermined position, cooking is controlled so as not to start.

Next, if it is determined (No) that there is no outer lid 21 in step S11, the process proceeds to step S15 to determine the presence or absence of the inner lid 22. The presence or absence of the inner lid 22 here is also determined by using the magnet 52 and the reed switch 51 as in step S12.

If it is determined in step S15 that the inner lid 22 is present (Yes), the sequence of mode A (cooking mode with lid) is used (step S16), and the temperature table of mode A is used (step S17) to cook. Control the temperature of the hour.

On the other hand, if it is determined (No) that there is no inner lid 22 in step S15, the sequence of mode B (cooking mode without lid) is used (step S18), and the temperature table of mode B is used (step S19). , Control the temperature during cooking.

As described above, in the rice cooker 1 of the present embodiment, in the mode A which is the cooking mode with a lid, the temperature table (first temperature table) is set on the assumption that it is not easily affected by the temperature outside the rice cooker main body 3. Temperature control during cooking is performed by a sequence of temperature control based on the cooking. Further, in mode B, which is a cooking mode without a lid, temperature control during cooking is performed by a temperature control sequence based on a temperature table (second temperature table) assuming that the rice cooker body 3 is easily affected by the outside temperature. Will be done. That is, in the rice cooker 1 of the present embodiment, the temperature is controlled based on the first temperature table in the mode A, which is the cooking mode with a lid, and the mode B, which is the cooking mode without a lid, is different from the first temperature table. Temperature control is performed based on the second temperature table. Specifically, the presence or absence of the lid 2 is detected, a first temperature table or a second temperature table is selected, and temperature control is performed based on the selected temperature table.

(effect)
As described above, in cooking when both the outer lid 21 and the inner lid 22 of the lid 2 are not provided, an appropriate temperature table and temperature control sequence can be used, so that the temperature outside the rice cooker main body 3 can be used. It is possible to properly control the temperature during cooking without being affected by.

[Embodiment 3]
Other embodiments of the present invention will be described below. For convenience of explanation, the same reference numerals will be added to the members having the same functions as the members described in the above embodiment, and the description will not be repeated.

As shown in FIG. 1, when the lid 2 is not connected to the rice cooker body 3 by a hinge or the like and can be completely removed from the rice cooker body 3, if the internal pressure of the inner pot 4 increases during rice cooking, the lid 2 rises. .. Specifically, the inner lid 22 that covers the inner pot 4 is lifted, and the raised inner lid 22 pushes up the outer lid 21, so that the lid 2 is lifted. If the lid 2 is lifted too much during rice cooking, the space between the lid 2 and the rice cooker body 3 may be widened and water vapor may leak to the outside.

The inner lid 22 that covers the inner pot 4 is provided with packing so that steam does not leak even if the inner pot 4 is slightly lifted. That is, even if the inner lid 22 is lifted from the inner pot 4, if the height is equal to or lower than the packing height, no gap is formed between the inner pot 4 and the inner lid 22, so that water vapor does not leak. However, if the internal pressure of the inner pot 4 is high and the inner lid 22 rises higher than the height of the packing, water vapor leaks from the gap between the inner pot 4 and the inner lid 22.

Therefore, in the present embodiment, the inner lid 22 that covers the inner pot 4 is pressed by the outer lid 21. As a result, even if the inner lid 22 tries to be lifted by the internal pressure of the inner pot 4, it is pressed by the outer lid 21, so that no gap is formed between the inner pot 4 and the inner lid 22. However, if the weight of the outer lid 21 is light, it will float together with the inner lid 22, so the combined weight of the outer lid 21 and the inner lid 22 needs to be set to be equal to or greater than the weight that resists the internal pressure of the inner pot 4. There is. That is, the outer lid 21 needs to be set to a weight that prevents the inner lid 22 that covers the inner pot 4 of the rice cooker main body 3 from being lifted by the internal pressure of the inner pot 4 during cooking. For example, if the weight of the inner pot 4 against the internal pressure is 1400 g, the total weight of the outer lid 21 and the inner lid 22 needs to be 1400 g or more. However, when the removal of the outer lid 21 is taken into consideration, the weight of the lid 2 is preferably equal to or more than the weight that resists the internal pressure of the inner pot 4 and is as close as possible to this weight. That is, the combined weight of the outer lid 21 and the inner lid 22 is preferably set to a weight that resists the force with which the inner lid 22 is lifted by the maximum internal pressure that can be generated in the rice cooker 1.

As described above, according to the rice cooker 1 according to the present embodiment, the weight of the outer lid 21 suppresses the lifting of the inner lid 22 due to the internal pressure of the inner pot 4, so that the outer lid 21 is used as the rice cooker. It is not necessary to mechanically fix the main body 3 with a hinge or the like.

Not only the inner lid 22 may be suppressed by the weight of the outer lid 21, but also the outer lid 21 and the rice cooker main body 3 may be connected by a magnetic force (magnet). In this case, a magnetic material is provided on the outer lid 21, and a magnet is provided on the rice cooker main body 3 at a position where a magnetic force is generated when the outer lid 21 is set at an appropriate position on the rice cooker main body. Fix the rice cooker body 3 and the like. A magnet may be provided on the outer lid 21 and a magnetic material may be provided on the rice cooker main body 3, or a magnet may be provided on the outer lid 21 and the rice cooker main body 3. Further, the inner lid 22 and the rice cooker main body 3 may be connected by a magnetic force (magnet). At this time, the magnetic force when the outer lid 21 is set on the rice cooker main body 3 is the force that lifts the inner lid 22 and the outer lid 21 that cover the inner pot 4 by the maximum internal pressure set in advance in the rice cooker 1. It is preferable that the size is set to withstand the above.

In this way, even if the outer lid 21 is fixed to the rice cooker main body 3 using a magnet, it is not necessary to use a mechanical member such as a hinge, and the outer lid 21 is set on the rice cooker main body 3. Alignment is also easy.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

1 Rice cooker (cooker)
2 Lid 3 Rice cooker body (cooker body)
4 Inner kettle 5a / 5b Wireless power supply unit 6a / 6b Non-contact communication unit 7 Induction coil 8 UI unit 8a Display unit 8b Operation unit 9 Cooling fan 10 Power supply board 11 Power cord 12 Bottom thermistor 13 Lid heater 14 Lid thermistor 15 Bottom thermistor 21 Outer lid 21a Steam hole 22 Inner lid 24 UI unit 30 CPU
31 Communication status determination unit 32 Power measurement unit 33 Cooking control unit 34 ROM
35 RAM
40 CPU (outer lid detector)
41 Communication status determination unit 42 Power supply 44 ROM
45 RAM
51 Reed switch (inner lid detector)
52 Magnet (inner lid detector)

Claims (6)

The cooker body and
An inner lid that covers the opening of the cooker body and
An outer lid that is detachably provided on the cooker body so as to cover the inner lid,
Including
A cooker comprising an inner lid detecting portion for detecting whether or not the inner lid is set at a predetermined position for covering the opening. Further provided with an outer lid detection unit for detecting whether or not the outer lid is set at a predetermined position on the main body of the cooker.
When the inner lid detection unit receives a detection signal indicating that the outer lid is set at a predetermined position from the outer lid detection unit, the inner lid detection unit detects whether or not the inner lid is set at a predetermined position. The cooker according to claim 1, wherein the cooker is characterized by the above. The inner lid detection unit
It is composed of a magnetic sensor provided on the cooker body and a magnet provided on the inner lid.
The magnet of the inner lid is characterized in that the magnetic sensor is provided at a position of detecting a magnetic field when the inner lid is set at a predetermined position of the cooker main body. The cooker according to claim 1 or 2. It also has a cooking control unit that controls from the start to the stop of cooking.
The cooking control unit
The cooking according to any one of claims 1 to 3, wherein when the inner lid detecting unit detects that the inner lid is not set at a predetermined position, the cooking is controlled so as not to start cooking. vessel. The combined weight of the outer lid and the inner lid is
Claims 1 to 4 are characterized in that the maximum internal pressure that can be generated in the cooker main body is set to a weight that resists the lifting force of the inner lid that covers the opening of the cooker main body. The cooker according to any one of the above items. The outer lid is set in a predetermined position by the cooker body and a magnet.
The magnetic force when the outer lid is set on the cooker main body is such that the inner lid and the outer lid that cover the opening of the cooker main body are lifted by the maximum internal pressure set in advance in the cooker main body. The cooker according to any one of claims 1 to 4, wherein the size is set to resist force.

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