WO2020054516A1

WO2020054516A1 - Cooker

Info

Publication number: WO2020054516A1
Application number: PCT/JP2019/034615
Authority: WO
Inventors: 雅之岩本; 隆男村井; 一之松林; 清秀溜池; 平川　功; 忠孝源; 井上　博喜; 中村　達彦; 宇野　正行
Original assignee: シャープ株式会社
Priority date: 2018-09-11
Filing date: 2019-09-03
Publication date: 2020-03-19
Also published as: JP2020039856A; TW202023454A; JPWO2020054516A1

Abstract

The purpose of the present invention is to achieve a cooker with which cooking can be appropriately performed by securely setting an inner lid on an inner pot. This cooker (1) is provided with: a magnet (52); and a lead switch (51) for detecting whether an inner lid (22) is set at a predetermined position for covering an inner pot (4) with the lid.

Description

Cooking device

The present invention relates to a cooker in which a lid that covers a 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 uses the inner pot with a lid. The inner lid of a rice cooker is attached to an outer lid that constitutes a product shell, for example, as in the rice cooker disclosed in Patent Document 1.

Japanese Unexamined Patent Publication "JP-A-2008-206562 (published on September 11, 2008)"

By the way, in the rice cooker disclosed in Patent Literature 1, an inner lid that covers 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. I have. At this time, there is a possibility that the dew water on the surface of the inner lid drips around the inner pot or around the inner pot. That is, when the outer lid is opened, there is a problem that the dew water on the surface of the inner lid drips around the inner pot or around the inner pot.

Therefore, it is conceivable that the outer lid and the inner lid are configured to be separable so that when the outer lid is opened, the inner lid keeps the inner lid covered. In this case, when the outer lid is opened, the inner lid does not come off together, so that there is no problem that the dew condensation water of the inner lid drips.

However, since the outer lid and the inner lid are separated and removed, there is a risk of forgetting to set the inner lid on the inner pot or starting cooking by closing the cooker body with the outer lid alone. There is. In such a case, there is a problem that cooking cannot be performed properly.

An object of one embodiment of the present invention is to realize a cooker capable of properly setting an inner lid in an inner pot and performing cooking properly.

In order to solve the above problems, a cooker according to one aspect of the present invention includes a cooker main body, an inner lid that covers an opening of the cooker main body, and the cooker that covers the inner lid. An outer lid detachably provided on the main body, and an inner lid detection unit for detecting whether or not the inner lid is set at a predetermined position for closing the opening. And

According to one aspect of the present invention, cooking can be appropriately performed by reliably setting the inner lid in the inner pan.

BRIEF DESCRIPTION OF THE DRAWINGS The rice cooker which concerns on Embodiment 1 of this invention is shown, (a) is a perspective view of the rice cooker of the state which covered, and (b) is an exploded perspective view of the rice cooker of (a). FIG. 2 is a sectional view taken along line AA of FIG. It is a figure which shows the detection part of the inner lid of the rice cooker shown in FIG. FIG. 2 is a schematic block diagram of a control circuit on a lid main body side of the rice cooker shown in FIG. 1. It is a schematic block diagram of the control circuit of the cooker main body side of the rice cooker shown in FIG. It is a figure for explaining the cooking mode in the rice cooker concerning Embodiment 2 of the present invention. 7 is a flowchart illustrating a flow of cooking control based on the presence or absence of an inner lid in the rice cooker illustrated in FIG. 6.

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

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

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 an upper portion 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 such as boiled food and steamed food.

The lid 2 is provided with a UI unit 8 for performing the rice cooking operation of the rice cooker 1. The UI unit 8 includes a display unit 8a formed of a liquid crystal display panel of a touch panel type, and an operation unit 8b including operation buttons operated by a user. Thereby, 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. Note that a touch panel type organic EL panel may be used instead of the touch panel type liquid crystal display panel.

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

(4) By realizing the wireless power supply and the non-contact communication in this way, the wiring which has been conventionally required can be eliminated, so that the regulation of the design by the wiring can be eliminated. Therefore, it is possible to realize the rice cooker 1 with a design priority.

(Lid 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, the inner lid 4 is attached to the inner pot 4. The lid remains intact. In the present embodiment, the inner lid 22 is formed by aluminum die casting.

When closing the rice cooker main body 3, the lid 2 is first set so as to cover the inner pot 4 with the inner lid 22 and cover the inner lid 22 with the outer lid 21 from above. On the surface of the inner lid 22, a knob 23 projecting in a substantially cylindrical shape is formed so that the user can pinch it. The outer lid 21 has an opening into which the knob 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 4 covered. A part (not shown) is formed. That is, when the lid 2 is set on the rice cooker main body 3, the opening of the outer lid 21 is fitted into the knob 23 of the inner lid 22 covering the inner pot 4. This position is an appropriate position where the lid 2 is set on 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. The cover 2 is provided with a steam hole 21a for allowing steam generated in the inner pot 4 to escape.

伝送 The information displayed on the display unit 8a provided on the lid 2 and the transmission of the touched signal are transmitted by the non-contact communication between the lid 2 and the rice cooker main body 3 as described above. In addition, 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, contactless communication)
To realize wireless power supply, the lid 2 is provided with a wireless power supply unit 5a, and the rice cooker body 3 is provided with a wireless power supply unit 5b. As shown in FIG. 2, the wireless power supply unit 5a and the wireless power supply unit 5b supply power to the lid 2 from the rice cooker main body 3 in a state where the lid 2 is set at a predetermined position of the rice cooker main body 3. It is provided at a position where it can be made.

On the other hand, in order to realize non-contact communication, the non-contact communication part 6a is provided in the lid 2, and the non-contact communication part 6b is provided in the rice cooker main body 3, respectively. The non-contact communication section 6a and the non-contact communication section 6b are arranged between the lid 2 and the rice cooker main body 3 in a state where the lid 2 is set at a predetermined position of the rice cooker main body 3, as shown in FIG. Is provided at a position where information can be transmitted and received.

In the present embodiment, an electromagnetic induction system is used for wireless power supply, and an infrared communication (IR) transmission system is used for 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 of the rice cooker main body 3. Any method may be used as long as it is a method.

(2) The rice cooker main body 3 is provided with an induction coil 7 for induction heating the inner pot 4 as shown in FIG. 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 for sending air to members requiring cooling such as a power supply, a power supply board 10, and a power supply cord wound around a cord reel so as to be drawn out. A bottom thermistor 12 for detecting the temperature of the inner pot 4 is provided.

The inner pot 4 stores rice, water, and the like as an example of contents. The inner pot 4 is made of, for example, a high heat conductive material such as aluminum, and a magnetic material such as stainless steel for improving the heating efficiency is attached to the outer surface thereof, while the inner surface is coated with a fluororesin to prevent adhesion of contents. Have been.

炊 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 the inner lid 22 is set at an appropriate position. Hereinafter, detection of the inner lid 22 will be described.

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

As shown in FIG. 3, the reed switch 51 is provided on the rice cooker main body 3 so that the inner lid 22 functions as a switch when the inner lid 22 is set to a predetermined position of the rice cooker main body 3, that is, an appropriate position during rice cooking. The magnet 52 is provided at a position facing the reed switch 51 on the inner lid 22. Thus, 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 outputs a detection signal. On the other hand, if the inner lid 22 is not set at an appropriate position on the rice cooker main body 3, the reed switch 51 is not turned on by the magnet 52, and no detection signal is output. In this manner, the detection signal is output from the reed switch 51, thereby detecting that the inner lid 22 is set at an appropriate position on the rice cooker main body 3. Accordingly, the reed switch 51 and the magnet 52 function as an inner lid detecting unit that detects whether the inner lid 22 is set at a predetermined position for closing the inner hook 4.

検出 The detection timing by the inner lid detecting section is the timing at which the outer lid 21 is set at a predetermined position of the rice cooker main body 3. That is, when the outer lid 21 is set at a predetermined position of the rice cooker main body 3, the inner lid detection unit detects whether the inner lid 22 is set at a predetermined position. Specifically, detection of whether or not the outer lid 21 is set at a predetermined position (outer lid detection) is performed by checking 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 cover detecting unit) 40 of the rice cooker main body 3 makes the determination. If the CPU 40 determines that the outer lid 21 is set at a predetermined position based on the communication state and the power supply state, the CPU 40 sends a result of the determination to the inner lid detecting unit as a detection signal. That is, the CPU 40 sends the detection signal to the reed switch 51 constituting the inner lid detection unit, and makes the reed switch 51 conductive. That is, when the reed switch 51 receives a detection signal from the CPU 40 indicating that the outer lid 21 has been 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. You.

(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 2. FIG. 5 is a block diagram showing a configuration of a control circuit provided in 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 a control system. Further, the CPU 30 is connected to the cooking control unit 33, the non-contact communication unit 6a, the wireless power supply unit 5a, the communication state determination unit 31, the power measurement unit 32, and the UI unit 8.

(4) The CPU 30 controls each unit by executing a control program stored in the ROM 34. Specifically, the CPU 30 controls display of the UI unit 8, reception of an operation, control for instructing the cooking control unit 33 to perform cooking control, determination of the communication state of the non-contact communication unit 6 a by the communication state determination unit 31, The power measurement unit 32 performs control for determining the power supply state of the wireless power supply unit 5a, and the like.

The inner lid 22 is provided with a lid heater 13 for warming 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 and control the temperature of the lid heater 13.

Next, a 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 components of a control system. Further, the CPU 40 is connected to the non-contact communication unit 6b, the wireless power supply unit 5b, the communication state determination unit 41, the induction coil 7, the UI unit 24, and the reed switch 51.

The CPU 40 controls each unit by executing a control program stored in the ROM 44. Specifically, the CPU 40 receives the instruction signal from the cooking control unit 33 of the lid 2 by the non-contact communication unit 6b, thereby controlling the on / off of the induction coil 7 and the non-contact communication unit by the communication state determination unit 41. The communication control unit 6b controls the communication state of the wireless power supply unit 5b. Further, the CPU 40 performs display control of the UI unit 24, acceptance of operation, control for instructing the cooking control unit 33 to perform 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.

The power supply 42 is connected to the wireless power supply unit 5b. The power supply 42 realizes conversion from commercial power supplied by plugging a power cord, which can be pulled out to a cord reel built in the rice cooker main body 3 into an outlet in a home, into a voltage for wireless power supply. are 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 rice cooker can forget to set the inner lid 22 or use only the outer lid 21. There is no danger of cooking rice with the lid of the main body 3. Thereby, there is an effect that cooking can be appropriately performed by reliably setting the inner lid 22 to the rice cooker main body 3 (the inner pot 4).

The inner lid 22 may be detected by a method using a magnetic sensor (such as a Hall element) for detecting 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 may be provided instead of the reed switch 51 of the rice cooker main body 3, and the inner lid 22 may be detected by a difference in the amount of reflected infrared light when the inner lid 22 is present and when the inner lid 22 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 detection of the inner lid 22 may be performed based on whether or not infrared light is received by the infrared light receiving element. In this case, if the inner lid 22 is set at an appropriate position, the light receiving element receives infrared rays. If the inner lid 22 is not set at an appropriate position, the light receiving element does not receive infrared rays.

The rice cooker 1 according to the first embodiment has a cooking mode (cooking mode with a lid) in which the lid 2 is removed, in addition to a cooking mode (cooking mode with a lid) in which the lid 2 is used for cooking. A cooking mode in which cooking is performed in a state where the opening is not covered with a lid (cooking mode without a lid) can be executed. In the following embodiment 2, a cooking mode with a lid and a cooking mode without a lid will be described.

[Embodiment 2]
(Cooking mode)
FIGS. 6A and 6B are diagrams for explaining the cooking mode. FIG. 6A is a diagram for explaining the cooking mode A when the lid is attached to the rice cooker main body, and FIG. It is a figure for explaining cooking mode B at the time of having removed from.

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

By the way, as shown in FIG. 6B, in the case of the cooking mode without the lid, since the temperature is easily influenced by the temperature outside the rice cooker main body 3, the temperature detected by the bottom thermistor 15 of the rice cooker main body 3 and the internal The relationship with the actual temperature inside the pot 4 is different from the case of the cooking mode with the lid shown in FIG. Therefore, in order to properly control the cooking temperature for the same cooking menu, the relationship between the temperature sensed by the bottom thermistor 15 and the actual temperature inside the inner pot 4 in the cooking mode without the lid and the cooking mode with the lid. , And it is necessary to 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 sensing temperature of the bottom thermistor 15 during the 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 2 as in the present embodiment, the sequence of temperature control is as follows: the lid heater 13, the lid thermistor 14, the induction coil 7, the bottom thermistor. 15 is used. However, since the lid heater 13 and the lid thermistor 14 cannot be used when the inner lid 22 is removed, the temperature control sequence uses the induction coil 7 and the bottom thermistor 15. Therefore, it is necessary to prepare two types of temperature control sequences depending on the presence or absence of the lid, and switch and use them. That is, the rice cooker 1 in the present embodiment has different temperature control during cooking between the cooking mode with the lid and the cooking mode without the lid.

温度 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 a 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 based on whether wireless power supply and non-contact communication between the outer lid 21 and the rice cooker main body 3 are possible.

れば If it is determined in step S11 that the outer lid 21 is present (Yes), the process proceeds to step S12, and the presence or absence of the inner lid 22 is determined. 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 performed (step S13). Here, the normal cooking is realized by operating the UI unit 8 of the lid 2. Here, the normal cooking is cooking in which temperature control during cooking is performed in the cooking mode with a lid (the same cooking as steps S16 and S17 described later).

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

Next, in step S11, if it is determined that the outer lid 21 is not present (No), the process proceeds to step S15, and the presence or absence of the inner lid 22 is determined. The determination of the presence or absence of the inner lid 22 is also performed 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. Temperature control.

On the other hand, if it is determined in step S15 that there is no inner lid 22 (No), the sequence of mode B (cooking mode without lid) is used (step S18), and the temperature table of mode B is used (step S19). And 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 the lid, the temperature table (first temperature table) is assumed to be hardly affected by the temperature outside the rice cooker body 3. The temperature control during cooking is performed by a temperature control sequence based on the temperature control. In mode B, which is the cooking mode without the lid, the temperature control during cooking is performed by a temperature control sequence based on a temperature table (second temperature table) based on the assumption that the temperature is likely to be affected by the temperature outside the rice cooker main body 3. Will be performed. That is, in the rice cooker 1 of the present embodiment, the temperature control based on the first temperature table is performed in the mode A that is the cooking mode with the lid, and the mode B that is the cooking mode without the 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, the first temperature table or the second temperature table is selected, and temperature control is performed based on the selected temperature table.

(effect)
As described above, an appropriate temperature table and a sequence of temperature control can be used in cooking in a case where both the outer lid 21 and the inner lid 22 of the lid 2 are not provided, so that the temperature outside the rice cooker main body 3 can be used. Temperature control during cooking can be appropriately performed without being affected by the above.

[Embodiment 3]
Another embodiment of the present invention will be described below. For convenience of description, members having the same functions as those described in the above embodiment are denoted by the same reference numerals, and description thereof will not be repeated.

As shown in FIG. 1, when the lid 2 can be completely removed from the rice cooker main body 3 without being connected to the rice cooker main body 3 by a hinge or the like, 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 rises, and the raised inner lid 22 pushes up the outer lid 21 so that the lid 2 rises. If the lid 2 rises too much during the rice cooking, the space between the lid 2 and the rice cooker main body 3 is greatly opened, and there is a possibility that steam may leak to the outside.

パッ Packing is provided on the inner lid 22 to cover the inner pot 4 so that even if the inner lid 4 slightly floats from the inner pot 4, vapor does not escape. That is, even if the inner lid 22 is lifted from the inner pot 4, if the inner lid 22 is not higher than the height of the packing, there is no gap between the inner pot 4 and the inner lid 22, so that steam does not leak. However, when the inner pressure of the inner pot 4 is high and the inner lid 22 rises higher than the height of the packing, steam 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 hook 4 is pressed by the outer lid 21. As a result, even if the inner lid 22 attempts to float due to the internal pressure of the inner hook 4, the inner lid 22 is held down by the outer lid 21, so that no gap is formed between the inner hook 4 and the inner lid 22. However, if the weight of the outer lid 21 is small, the outer lid 21 is lifted together with the inner lid 22. Therefore, 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 against 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 rising due to the internal pressure of the inner pot 4 during cooking. For example, if the weight against the internal pressure of the inner pot 4 is 1400 g, the total weight of the outer lid 21 and the inner lid 22 needs to be 1400 g or more. However, in consideration of the removal of the outer lid 21, the weight of the lid 2 is not less than the weight against the internal pressure of the inner hook 4, and is preferably 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 lifting of the inner lid 22 due to the internal pressure of the inner pot 4 is suppressed by the weight of the outer lid 21. There is no need to mechanically fix the main body 3 using a hinge or the like.

In addition, not only the inner lid 22 is 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 body 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. The rice cooker body 3 is fixed. The outer lid 21 may be provided with a magnet and the rice cooker main body 3 may be provided with a magnetic material, or the outer lid 21 and the rice cooker main body 3 may be provided with magnets. 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 at the time of setting the outer lid 21 to the rice cooker main body 3 is a force that the inner lid 22 and the outer lid 21 that cover the inner pot 4 by the maximum internal pressure preset in the rice cooker 1 are lifted. Is preferably set to a size that resists

As described above, even when the outer lid 21 is fixed to the rice cooker main body 3 by using a magnet, there is no need to use a mechanical member such as a hinge, and when the outer lid 21 is set to the rice cooker main body 3. Positioning is also facilitated.

The present invention is not limited to the embodiments described above, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in 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 pots

5a, 5b Wireless

power supply sections

6a, 6b Non-contact communication section 7 Induction coil 8 UI section

8a Display section

8b Operation section 9 Cooling fan 10 Power supply board 11 Power cord 12 Bottom thermistor 13 Cover heater 14 Cover thermistor 15 Bottom thermistor 21 Outer lid 21a Steam hole 22 Inner lid 24 UI unit 30 CPU
31 communication state determination unit 32 power measurement unit 33 cooking control unit 34 ROM
35 RAM
40 CPU (outer lid detector)
41 Communication state determination unit 42 Power supply 44 ROM
45 RAM
51 Reed switch (inner lid detector)
52 magnet (inner lid detection unit)

Claims

Cooker body,
An inner lid that covers the opening of the cooking device body,
An outer lid detachably provided on the cooker body to cover the inner lid,
Including
A cooking appliance comprising: an inner lid detection unit that detects whether the inner lid is set at a predetermined position for closing the opening.
An outer lid detection unit that detects whether the outer lid is set at a predetermined position of the cooker body, further includes:
The inner lid detection unit detects whether the inner lid is set at a predetermined position when receiving a detection signal indicating that the outer lid is set at a predetermined position from the outer lid detection unit. The cooker according to claim 1, wherein
The inner lid detection unit,
A magnetic sensor provided on the cooker body, and a magnet provided on the inner lid,
The magnet of the inner lid is provided at a position where the magnetic sensor detects a magnetic field when the inner lid is set at a predetermined position of the cooking appliance main body. The cooker according to claim 1.
It further includes a cooking control unit that controls from the start to the stop of cooking,
The cooking control unit includes:
The cooking according to any one of claims 1 to 3, wherein when the inner lid detection unit detects that the inner lid is not set at a predetermined position, control is performed so as not to start cooking. vessel.
The combined weight of the outer lid and the inner lid is
The maximum internal pressure that can be generated in the cooking appliance main body is set to a weight against the force of lifting the inner lid that covers the opening of the cooking appliance main body. The cooker according to any one of the above.
The outer lid is set at a predetermined position by the cooking device main body and a magnet,
The magnetic force at the time of setting the outer lid 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 a maximum internal pressure preset in the cooker main body. The cooker according to any one of claims 1 to 4, wherein the cooker is set to a size that resists force.