JP7204831B2 - rice cooker - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker, and more particularly to a rice cooker provided with a main body and a rice bowl that can be removed from the main body.

2. Description of the Related Art Conventionally, for example, there is a rice cooker that includes a heating unit (main body) and a rice cooker unit that can be removed from the heating unit (see Patent Literature 1).

Japanese Patent Application Laid-Open No. 2001-211994

Here, in the rice cooker described in Patent Document 1, a heat insulating material is provided near the pot in the rice bowl unit. Thereby, even if the rice bowl unit is separated from the heating unit, the temperature of the object to be heated in the pan can be maintained for a certain period of time. However, when the rice bowl unit is separated from the heating unit, the temperature of the object to be heated decreases with time. Along with this, the taste of the object to be heated may also change. In the rice cooker of Patent Document 1, the user can recognize at what timing the rice bowl unit should be returned to the state integrated with the heating unit in order to keep the temperature of the object to be heated above a certain temperature so that the taste does not change. It wasn't. Therefore, there is a problem that the usability is not good.

SUMMARY OF THE INVENTION The present invention was made against the background of the problems described above, and an object of the present invention is to provide a rice cooker with improved usability.

The rice cooker of the present invention includes a main body portion having a heating means, a rice cooker portion detachably attached to the main body portion and containing an inner pot covered with a lid, and a control means for controlling the heating means. The rice bowl portion has an inner pot temperature detection means for detecting the temperature of the inner pot and a notification device for notifying the temperature of the inner pot, and the main body portion is attached to a predetermined position of the main body portion. and a reference position determining means for determining whether or not the rice container has been removed from the main body, the control means determines the inner pot temperature based on the temperature detected by the inner pot temperature detecting means. It determines the heat-retainable time until the temperature of the pot falls below a preset threshold temperature, and the notification means notifies the determined heat-retainable time .

According to the present invention, since the notification means performs notification based on the temperature of the inner pot, the user can notice a decrease in the temperature of the object to be heated, and the ohitsu portion is brought to the predetermined position of the main body portion at an appropriate timing. can be installed. Therefore, the usability can be improved as compared with the conventional one.

1 is a perspective view of rice cooker 100 according to Embodiment 1 of the present invention. FIG. 1 is a longitudinal sectional view of rice cooker 100 according to Embodiment 1 of the present invention. FIG. 1 is a control block diagram showing the configuration of rice cooker 100 according to Embodiment 1 of the present invention. FIG. FIG. 3 is a diagram showing a display example of display means 11 of rice cooker 100 according to Embodiment 1 of the present invention. FIG. 3 is a diagram showing a display example of display means 11 of rice cooker 100 according to Embodiment 1 of the present invention. FIG. 4 is a diagram showing an example of temperature change with time in rice cooker 100 according to Embodiment 1 of the present invention. It is a longitudinal cross-sectional view of rice cooker 100 according to Embodiment 2 of the present invention.

Hereinafter, the rice cooker of the present invention will be described in detail with reference to the drawings. In the drawings below, the size relationship of each component may differ from the actual size. Moreover, in the following drawings, the same reference numerals denote the same or corresponding parts, and this applies throughout the specification. Furthermore, the forms of the components shown in the entire specification are merely examples, and are not limited to these descriptions.

Embodiment 1.
FIG. 1 is a perspective view of rice cooker 100 according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view of rice cooker 100 according to Embodiment 1 of the present invention. It should be noted that the direction of the solid double-headed arrow in FIG. Further, it is assumed that the direction of the dashed double-headed arrow in FIG. 2 is, for example, a vertical cross-sectional view of the container 1 and the main body 10 cut in the longitudinal direction so as to pass through the center of the container 1 and the main body 10 in the left-right direction of FIG.

As shown in FIG. 1 , the rice cooker 100 includes a rice bowl portion 1 and a main body portion 10 . The rice pad portion 1 is detachably attached to the body portion 10 . The body portion 10 is a member on which the rice cooker portion 1 is placed, and is configured in a substantially L shape, for example, when the rice cooker 100 is viewed from the side.

As shown in FIGS. 1 and 2, the rice cooker portion 1 includes a rice cooker main body 1a, a lid body 1b, a grip portion 1c, an inner pot 3, an inner pot temperature detecting means 5, a power supply means 6, It includes a power receiving coil 7 , a lid open/close button 8 , lid heating means 9 a , inner pot side heating means 9 b , display means 11 as an example of notification means 70 , and operation means 12 . The main body 10 includes a cooling fan 13, a heating coil 14, a power transmission coil 17, a magnetic shield plate 19, a control means 50, and an outside air temperature detection means (not shown).

The rice cooker main body 1a is a member that accommodates the inner pot 3. The rice cooker main body 1a is attached with a lid body 1b and a grip portion 1c. The lid body 1b is, for example, a member provided so as to cover the upper surface of the rice cooker main body 1a. The grasping portion 1c is a member for lifting the rice bowl portion 1 in a state where the rice bowl portion 1 is attached to the main body portion 10, for example. The inner pot 3 is a substantially bottomed cylindrical member having an opening at the top. An object to be heated such as rice is put into the inner pot 3 . The inner pot temperature detection means 5 is temperature detection means for detecting the temperature of the inner pot 3, and is composed of, for example, a thermistor.

The power supply means 6 is, for example, an electric storage means provided on the back side of the rice bowl portion 1 relative to the inner pot 3 . The power feeding means 6 is composed of a secondary battery such as a lead storage battery, a nickel hydrogen storage battery, a lithium ion storage battery, for example.

The power receiving coil 7 is, for example, a coil provided inside the rice bowl portion 1 and functions to feed power to the power feeding means 6 based on the power sent from the power transmitting coil 17 . Methods for contactlessly supplying power to the power supply means 6 include an electromagnetic induction method, a magnetic resonance method, an electric field coupling method, and the like. In the first embodiment, an example of the electromagnetic induction method will be described.

The lid open/close button 8 is configured to open the lid body 1b by applying a force directed from the front side to the back side of the rice cooker portion 1, and is provided on the front surface of the rice cooker main body 1a, for example. . For example, in the state shown in FIG. 1, the lid body 1b is opened by applying a force directed from the front side to the back side of the rice bowl portion 1 to the lid open/close button 8. As shown in FIG.

The lid heating means 9a is a heating means provided above the inner pot 3, and is provided inside the lid 1b, for example. The inner pot side heating means 9b is a heating means provided on the side of the inner pot 3, and is provided inside the rice cooker main body 1a, for example. When the rice bowl 1 is attached to the main body 10, the lid heating means 9a and the inner pot side heating means 9b are driven by electric power from an external power source, for example. In a state in which the rice bowl portion 1 is not attached to the main body portion 10, the lid heating means 9a and the inner pot side heating means 9b are driven by the electric power of the power feeding means 6, for example.

The display means 11 is a display means for displaying various information of the rice cooker 100 on a screen, and is configured by, for example, an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence), or the like. The display means 11 displays the length of time that can be kept warm when, for example, the rice pad portion 1 is removed from the main body portion 10 . The display means 11 also displays the state of charge of the power supply means 6, for example. The display means 11 also displays the current state of charge within the range of 0% to 100%, for example. The display means 11 also displays, for example, the time required until charging of the power supply means 6 is completed. The operation means 12 is, for example, an operation means for receiving operation inputs and the like for executing processes such as a preheating process, a rice cooking process, and a heat retention process.

The cooling fan 13 is air blowing means for releasing heat generated in the control means 50 . When the cooling fan 13 rotates, an air flow is generated from the cooling fan 13 toward the heating coil 14 side. The heating coil 14 heats the object to be heated that is housed inside the inner pot 3. For example, the heating coil 14 is provided so as to be positioned below the inner pot 3 with the rice bowl portion 1 attached to the main body portion 10. It is

The power transmission coil 17 is supplied with power from an external power supply, and supplies power to the power reception coil 7 based on the supplied power. The power transmission coil 17 is positioned on the upstream side of the air flow of the cooling fan 13 relative to the heating coil 14 . In other words, the power transmission coil 17 is positioned closer to the back side of the main body 10 than the heating coil 14 and is positioned closer to the front side of the main body 10 than the cooling fan 13 . By providing the power transmission coil 17 in this way, it is possible to reduce the possibility of supplying the power transmission coil 17 with air whose temperature has been increased by cooling the heating coil 14 .

The magnetic shield plate 19 is a member that shields the electromagnetic waves emitted from the heating coil 14 from reaching the power transmission coil 17 . The magnetic shield plate 19 is provided, for example, annularly outside the heating coil 14 in the radial direction of the body portion 10 . The magnetic shield 19 extends downward from the upper and lower surfaces of the main body 10, for example. Note that the magnetic shield plate 19 is not limited to the example in which the magnetic shield plate 19 is provided annularly outside the heating coil 14 in the radial direction of the main body 10 , and is positioned at least between the heating coil 14 and the power transmission coil 17 . It is sufficient if it is provided in
The outside air temperature detection means is for detecting the temperature outside the space where the rice cooker 100 is placed. The temperature detected by the outside air temperature detection means is used together with the temperature detected by the inner pot temperature detection means 5 to calculate the heat retention time, which will be described later.
Although the outside air temperature detection means is provided in the body portion 10, it may be provided in the rice bowl portion 1 as well.

FIG. 3 is a control block diagram showing the configuration of rice cooker 100 according to Embodiment 1 of the present invention. As shown in FIG. 3, the input information of the operation means 12, the detection result of the inner pot temperature detection means 5, and the determination result of the reference position determination means 33 are input to the control means 50. FIG. The control means 50 controls the heating coil 14, the power transmission coil 17, the notification means 70, etc. based on the input information of the operation means 12, the detection result of the inner pot temperature detection means 5, and the determination result of the reference position determination means 33. do.

The reference position determining means 33 determines whether or not the rice bowl 1 is attached to a predetermined position on the main body 10 . A determination result of the reference position determination means 33 is output to the control means 50 . Note that the control means 50 may have the functions of the reference position determination means 33 .

The reference position determining means 33 determines, for example, whether or not the resistance value when the heating coil 14 is supplied with current is equal to or greater than the reference resistance value. Specifically, for example, when the control means 50 determines that the resistance value in the case where the heating coil 14 is supplied with a current is equal to or greater than the reference resistance value, it is determined that the rice bowl portion 1 is attached to the main body portion 10. judge. Specifically, for example, when the control means 50 determines that the resistance value in the case where the heating coil 14 is energized is less than the reference resistance value, the rice bowl portion 1 is removed from the main body portion 10. I judge.

The reference position determination means 33 has a temperature detection means (not shown) in the main body 10, and determines whether or not the ladle 1 is attached to a predetermined position of the main body 10 based on the temperature detected by the temperature detection means. It may be configured to determine In this case, for example, when the temperature detected by the temperature detection means is equal to or higher than the threshold temperature, the control means 50 determines that the rice bowl portion 1 is likely to be attached to the main body portion 10 . is attached to the predetermined position of the main body 10 . More specifically, for example, when the temperature detected by the temperature detection means is less than the threshold temperature, the control means 50 determines that the rice bowl 1 is likely to be removed from the main body 10 . is not attached to the predetermined position of the main body 10 .

The control means 50 is a control board that performs various controls of the rice cooker 100 . When the rice bowl 1 is detached from the main body 10, the control means 50, for example, wirelessly transmits commands to various control objects in the rice bowl 1. FIG. The control means 50 is composed of, for example, hardware such as a circuit device that realizes this function, or software executed on an arithmetic device such as a microcomputer or a CPU. The control means 50 includes a storage means 50a for storing various information and a clock means 50b for clocking various times.

In addition, the control means 50 is not limited to the configuration including the storage means 50a and the clock means 50b. For example, the storage means 50 a and the clock means 50 b may be configured separately from the control means 50 so that the outputs of the storage means 50 a and the clock means 50 b are input to the control means 50 .

Moreover, although an example in which the control means 50 is provided in the main body portion 10 has been described, the control means 50 is not limited to this, and may be provided in the rice bowl portion 1 . In the case where the control means 50 is provided inside the rice bowl portion 1 , the control means 50 performs various controls based on power supply from the power supply means 6 .

The notification means 70 is provided inside the rice cooker 1 and outputs information about the operating state of the rice cooker 100 based on the control signal output from the control means 50 . The notification means 70 is configured by the display means 11, for example. The notification means 70 is composed of, for example, audio output means for outputting audio (guide audio). When the notification means 70 is configured to output sound, the sound is output at a preset volume or a volume set by the user. Moreover, when the notification means 70 is configured to output sound, for example, the volume can be set in a plurality of stages. Also, the notification means 70 may be composed of both the display means 11 and the voice output means for outputting voice (guide voice).

FIG. 4 is a diagram showing a display example of the display means 11 of the rice cooker 100 according to Embodiment 1 of the present invention. FIG. 5 is a diagram showing a display example of the display means 11 of the rice cooker 100 according to Embodiment 1 of the present invention. 4 and 5, the case where the notification means 70 is composed of the display means 11 will be described.

As shown in FIG. 4, when the rice bowl 1 is removed from the main body 10, the display means 11 displays, for example, "Temperature Keep Warm 30 Minutes." Here, the "heat retention possible time" indicates, for example, the time required for the temperature of the inner pot 3 to fall below a preset threshold temperature. Note that the specific content displayed by the display means 11 is not limited to "30 minutes for keeping warm". Any content may be used as long as it informs the user of the length of time that the rice pad 1 can be kept warm when it is removed from the main body 10 . In addition, it is also possible to audibly output the contents of notifying the user of the heat retention time in the state in which the rice pad portion 1 is removed from the main body portion 10 .

The control means 50 adjusts the temperature of the inner pot 3 from the initial temperature to the threshold temperature based on, for example, the temperature detected by the inner pot temperature detection means 5, the threshold temperature pre-stored in the control means 50, and the temperature detected by the outside air temperature detection means. The time required for the temperature to drop below is calculated, the heat retention possible time is determined, and the display means 11 is caused to display the heat retention possible time. The higher the temperature detected by the inner pot temperature detecting means 5 is than the threshold temperature, the longer it takes for the temperature of the inner pot 3 to reach the threshold temperature when the rice bowl portion 1 is removed from the main body portion 10. The heat retention possible time is set long.

In this way, the display means 11 displays the heat-retainable time, prompting the user to quickly eat the object to be heated, or returning the rice bowl portion 1 to the main body portion 10 to allow the object to be heated. You can encourage them to stay warm. Therefore, it is possible to reduce the possibility that the temperature of the object to be heated falls below the threshold temperature stored in advance in the control means 50 and the taste of the object to be heated deteriorates.

As shown in FIG. 5, when the ohitsu portion 1 is removed from the main body portion 10 and the heat retention time has elapsed, the display means 11 displays, for example, "The temperature inside the ohitsu is dropping. Please return to the main body as soon as possible." Please” is displayed. The specific content displayed by the display means 11 is not limited to "The temperature inside the Ohitsu has dropped. Please return it to the main body as soon as possible." Any content may be used as long as it prompts the object to be heated to be kept warm by returning the rice bowl portion 1 to the main body portion 10 when the heat retention time has elapsed after the rice bowl portion 1 has been removed from the main body portion 10 . In addition, when the rice jar 1 is removed from the main body 10 and the heat retention time has passed, the rice jar 1 may be returned to the main body 10 and the content of urging the object to be heated to be kept warm may be output by voice. In addition, before the time when the ohitsu part 1 is removed from the main body part 10 and the heat retention time elapses, the display means 11 displays, for example, "The temperature inside the ohitsu is dropping. Please return it to the main body as soon as possible." You may make it display.
Further, when the rice bowl portion 1 is returned to the main body portion 10 within the heat retention time displayed on the rice bowl portion 1, the heat retention is continued by power supply from the main body side.
Even if the heat-retaining time has passed, the object to be heated in the rice-warming part 1 may have deteriorated even if the rice-warming part 1 is returned to the main-body part 10. not return. At this time, since the temperature-retaining time has elapsed on the display means 11, a message may be displayed to prompt the user to take out the object to be heated from the rice bowl portion 1.

FIG. 6 is a diagram showing an example of temperature change with time in rice cooker 100 according to Embodiment 1 of the present invention. The horizontal axis in FIG. 6 indicates time, and the vertical axis in FIG. 6 indicates the temperature of the inner pot 3 . The temperature of the inner pot 3 is the temperature detected by the inner pot temperature detecting means 5, for example. As shown in FIG. 6, when the preheating process is performed, the rice cooking process is performed after the preheating process is performed, and the steaming process is performed after the rice cooking process, the temperature of the inner pot 3 is There is a period of time when the change is steep. In this way, the electric power supplied to the heating coil 14 is increased during the period of time when the temperature of the inner pot 3 changes rapidly.

Therefore, in the time period when the temperature of the inner pot 3 changes steeply, the control means 50 stops the power supply to the power transmission coil 17 in order to give priority to the heating of the object to be heated over the power supply of the power supply means 6. good. Specifically, for example, when the change in temperature of the inner pot 3 per unit time is equal to or greater than a predetermined value, the control means 50 stops the power supply to the power transmission coil 17 and controls the change in temperature of the inner pot 3 per unit time. is less than a predetermined value, the power supply to the power transmission coil 17 is continued. In this way, it is possible to reduce the possibility of preventing the temperature rise of the object to be heated in the rice cooking process. Note that the control means 50 is not limited to the example of determining whether or not to stop the power supply to the power transmission coil 17 based on the temperature of the inner pot 3 .

For example, whether or not to stop the power supply to the power transmission coil 17 may be determined depending on whether or not it is the rice cooking process. Specifically, the control means 50 stops the power supply to the power transmission coil 17 when the preheating process is finished and the rice cooking process is started, and when the rice cooking process is finished and the steaming process is started, Power supply to the power transmission coil 17 is started.

Further, for example, whether or not to stop the power supply to the power transmission coil 17 may be determined depending on whether the current value supplied to the heating coil 14 is equal to or greater than a threshold current value. Specifically, when the current value supplied to the heating coil 14 is equal to or higher than the threshold current value, the control means 50 stops the power supply to the power transmission coil 17, and the current value supplied to the heating coil 14 is If it is less than the threshold current value, the power supply to the power transmission coil 17 is continued.

An operation example of the rice cooker 100 according to Embodiment 1 will be described below.
First, the user attaches the rice pad portion 1 to the main body portion 10 . The control means 50 supplies electric power from the external power supply to the power transmission coil 17 when the rice bowl 1 is attached to a predetermined position of the main body 10 . The power supplied to the power transmission coil 17 is supplied to the power reception coil 7 . The power receiving coil 7 feeds the power feeding means 6 based on the power supplied from the power transmitting coil 17 .

When the operation means 12 is operated and the rice cooking process is executed, the lid heating means 9a, the inner pot side heating means 9b, and the heating coil 14 are driven, and the inner pot 3 is heated. When the rice cooking process is completed and the heat retention process is executed, the lid heating means 9a, the inner pot side heating means 9b, and the heating coil 14 are driven with a predetermined thermal power. When the rice bowl portion 1 is removed from the main body portion 10 while the heat retaining process is being performed, the lid heating means 9a and the inner pot side heating means 9b continue to drive, the heating coil 14 stops driving, The display means 11 displays a predetermined content, and power from the external power source is no longer supplied to the power transmission coil 17 . At this time, the lid heating means 9a and the inner pot side heating means 9b are powered by the power feeding means 6 and driven. Further, the display means 11 is powered by the power supply means 6, and displays the display contents as shown in FIG. 4, for example. Then, the display means 11 displays the display contents shown in FIG. 4, for example, and displays the display contents shown in FIG. 5 after the heat retention possible time has elapsed.

In the above description, when the rice bowl portion 1 is removed from the main body portion 10 while the heat retaining step is being performed, the lid heating means 9a and the inner pot side heating means 9b are continuously driven. Illustrated, but not limited to. For example, when the rice bowl portion 1 is removed from the main body portion 10 while the heat retaining step is being performed, only one of the lid heating means 9a and the inner pot side heating means 9b may be continuously driven. Further, for example, when the rice bowl portion 1 is removed from the main body portion 10 while the heat retaining step is being performed, the driving of the lid heating means 9a and the inner pot side heating means 9b may be stopped. Thus, when at least one of the lid heating means 9a and the inner pot side heating means 9b is stopped, the temperature of the object to be heated is intentionally lowered, such as when the object to be heated is stored in a refrigerator. is suitable in some cases.

As described above, the rice cooker 100 according to the first embodiment includes the main body portion 10 having the heating coil 14, the rice cooker portion 1 that is detachably attached to the main body portion 10 and houses the inner pot 3, various control and a control means 50 for performing the above, the rice-feeding means 6 and the notification means 70, and the control means 50 controls the feeding means when the rice-feeding means 1 is removed from the main body 10 6 is supplied to the notification means 70 . Therefore, even when the rice bowl part 1 is removed from the main body part 10 , the notification means 70 can use the power supplied from the power supply means 6 to notify various information. Therefore, the user can recognize the state of the object to be heated from the information notified by the notification means 70, and usability can be improved more than before.

In addition, a power transmitting coil 17 provided in the main body 10 for transmitting power, and a power receiving coil 7 provided in the rice pad portion 1 for supplying power to the power feeding means 6 based on the power transmitted from the power transmitting coil 17 are further provided. rice field. Therefore, even if the power of the power feeding means 6 is consumed, the battery can be charged and used repeatedly.

A magnetic shield plate 19 for shielding electromagnetic waves is provided between the heating coil 14 and the power transmission coil 17 . Therefore, the electromagnetic waves emitted from the heating coil 14 can be shielded so as not to reach the power transmission coil 17 , so that the power supply from the power transmission coil 17 to the power reception coil 7 is not hindered.

Further, a cooling fan 13 is provided inside the main body 10 , and the power transmission coil 17 is provided upstream of the air flow generated by the rotation of the cooling fan 13 relative to the heating coil 14 . Therefore, it is possible to reduce the possibility that the air heated by cooling the heating coil 14 is supplied to the power transmission coil 17 .

Further, the control means 50 stops power supply to the power supply means 6 when the current value supplied to the heating coil 14 is equal to or higher than the threshold current value. Therefore, it is possible to reduce the possibility of hindering the temperature rise of the object to be heated or the inner pot 3 during rice cooking.

Further, when the rice bowl portion 1 is removed from the predetermined position of the main body portion 10, the control means 50 supplies the electric power stored in the power feeding means 6 to the lid heating means 9a and the inner pot side heating means 9b, The body heating means 9a and the inner pot side heating means 9b are driven. Therefore, when the lid heating means 9a and the inner pot side heating means 9b are driven, the rice bowl portion 1 is heated to the main body portion 10 more than when the lid heating means 9a and the inner pot side heating means 9b are not driven. When the heater is removed from the predetermined position, the temperature of the object to be heated decreases gradually, so the heat retention time becomes longer. Therefore, it is possible to suppress putrefaction of the object to be heated.

Note that the control means 50 may be provided in the rice bowl portion 1 or may be provided in the main body portion 10 . In the case where the control means 50 is provided in the body portion 10, when the rice bowl portion 1 is removed from the predetermined position of the body portion 10, a signal for displaying the display means 11 of the rice bowl portion 1 is sent from the body portion 10 by radio. It should be configured to send Here, as means for wirelessly communicating the signal for displaying the display means 11 of the rice bowl 1 from the main body 10, for example, known means such as Bluetooth (registered trademark) and Wi-Fi (registered trademark) are adopted. be able to.

Further, the display means 11 may be configured to display the display contents not only when the rice bowl portion 1 is removed from the main body portion 10 but also when the rice bowl portion 1 is attached to the main body portion 10. good. With this configuration, there is no need to provide a member for displaying display contents other than the display means 11, so that the number of parts of the rice cooker 100 can be reduced and the space of the rice cooker 100 can be saved.

Further, a display unit (not shown) may be provided in the body portion 10 separately from the display means 11 provided in the rice bowl portion 1 . By providing the display section in this way, when the rice bowl section 1 is attached to the main body section 10, the display contents are displayed on the display section, and when the rice bowl section 1 is removed from the main body section 10, the display means is displayed. 11 can be used to display the display content. Therefore, the deterioration of the life of the display means 11 can be suppressed. The content displayed on the display unit may be the same as that of the display means 11 or may be different from that of the display means 11 .

Embodiment 2.
In the second embodiment, the inside of the rice cooker 100 is configured differently from the first embodiment. In the second embodiment, items that are not particularly described are the same as those in the first embodiment, and the same functions and configurations are described using the same reference numerals.

FIG. 7 is a longitudinal sectional view of rice cooker 100 according to Embodiment 2 of the present invention. As shown in FIG. 7 , in Embodiment 2, unlike Embodiment 1, power transmission coil 17 is not provided, and leakage magnetic flux generated when heating coil 14 is driven is supplied to power reception coil 7. The heating coil 14 and the receiving coil 7 are configured as follows. The power receiving coil 7 is positioned below the heating coil 14 inside the main body 10 , for example.

Here, in Embodiment 2, unlike Embodiment 1, the power receiving coil 7 is provided in the main body 10 . must be configured so that the power supplied to the power receiving coil 7 is transmitted from the body portion 10 to the rice bowl portion 1 . Therefore, in the present second embodiment, a terminal 101 is provided on the rice bowl portion 1 and a terminal 110 is provided on the main body portion 10 .

Terminals 101 and 110 are members for supplying power supplied to power receiving coil 7 to power supply means 6 . The terminal 101 is provided, for example, so as to face the terminal 110 when the rice bowl 1 is attached to the main body 10 . The terminal 110 is, for example, configured to face the terminal 101 in a state where the rice bowl 1 is attached to the main body 10 . Electric power supplied to the power receiving coil 7 is supplied to the power supply means 6 through the terminals 110 and 101 in order in the state where the rice bowl 1 is attached to the main body 10 .

As described above, the rice cooker 100 according to the second embodiment includes the main body portion 10 having the heating coil 14, the rice cooker portion 1 that is detachably attached to the main body portion 10 and houses the inner pot 3, various control and a control means 50 for performing the above, the rice-feeding means 6 and the notification means 70, and the control means 50 controls the feeding means when the rice-feeding means 1 is removed from the main body 10 6 is supplied to the notification means 70, a power transmission section for transmitting power is constituted by the heating coil 14, and a power reception section for supplying power to the power supply means 6 based on the power transmitted from the power transmission section. , and a receiving coil 7 provided in the main body 10 .
Therefore, by driving the heating coil 14 , it is possible to heat the object to be heated, supply power to the power receiving coil 7 , and power the power supply means 6 . Therefore, compared to the rice cooker 100 of Embodiment 1, the rice cooker 100 of Embodiment 2 does not need to be provided with the power transmission coil 17, so that the space inside the main body 10 can be saved. Moreover, since the rice cooker 100 of Embodiment 2 does not need to be provided with the power transmission coil 17 as compared with the rice cooker 100 of Embodiment 1, the number of parts inside the body portion 10 can be reduced.

The power transmission coil 17 in Embodiment 1 and the heating coil 14 in Embodiment 2 correspond to the power transmission section in the present invention.
Moreover, the heating coil 14 in Embodiment 1 corresponds to the heating means of the present invention.
Further, the power receiving coil 7 in Embodiments 1 and 2 corresponds to the power receiving section in the present invention.

1 rice cooker 1a rice cooker main body 1b lid 1c gripping portion 3 inner pot 5 inner pot temperature detection means 6 power feeding means 7 power receiving coil 8 lid open/close button 9a lid heating means 9b inner pot Side heating means 10 Main body 11 Display means 12 Operation means 13 Cooling fan 14 Heating coil 17 Power transmission coil 19 Magnetic shield 33 Reference position determination means 50 Control means 50a Storage means 50b Timing means 70 notification means, 100 rice cooker, 101, 110 terminals.

Claims (4)

a main body having a heating means;
a ladle portion that is detachably attached to the main body portion and that houses an inner pot covered with a lid;
a control means for controlling the heating means;
with
The said rice bowl is
inner pot temperature detection means for detecting the temperature of the inner pot;
an informing means for informing;
has
The main body is
Having reference position determination means for determining whether or not the rice pad is attached to a predetermined position of the main body ,
The control means is
When the rice bowl portion is removed from the main body portion, the heat retention possible time until the temperature of the inner pot falls below a preset threshold temperature is determined based on the temperature detected by the inner pot temperature detecting means. death,
The notification means is
Notify the determined heat-retention possible time
A rice cooker characterized by: a main body having a heating means;
a ladle portion that is detachably attached to the main body portion and that houses an inner pot covered with a lid;
a control means for controlling the heating means;
with
The said rice bowl is
inner pot temperature detection means for detecting the temperature of the inner pot;
an informing means for informing;
has
The main body is
Having reference position determination means for determining whether or not the rice pad is attached to a predetermined position of the main body,
The control means is
When the ladle portion is removed from the main body, the temperature of the inner pot is kept below a preset threshold temperature based on the temperature detected by the inner pot temperature detecting means and the outside temperature. determine the heat retention time of
The notification means is
A rice cooker that notifies the determined heat-retainable time. The notification means is
3. The rice cooker according to claim 1 or 2 , wherein when the heat-retainable time has elapsed after the rice bowl portion has been removed from the main body portion, a notification prompting heat retention of the object to be heated is performed. The notification means is
4. The apparatus according to any one of claims 1 to 3 , wherein when the rice bowl is attached to the main body after the temperature-retainable time has elapsed, a notification prompting the user to take out the object to be heated is provided. The rice cooker described in .

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