JP6870081B2 - Electric rice cooker and cooking system - Google Patents

Description

The present invention relates to an electric rice cooker and a cooking system, and in particular, the electric rice cooker is used by being placed on an induction heating cooker, and after the rice cooking is completed, the electric rice cooker can be removed from the induction heating cooker and is guided. Regarding those that can be used as a single cooker.

Conventionally, a rice cooking unit (also called "Ohitsu part") equipped with an inner pot is placed on a tabletop induction heating cooker (also called "electromagnetic cooker"), and the rice is cooked by the induction heating source. After cooking rice, there was an electric rice cooker that made it possible to move the rice cooking unit to a place away from the induction heating cooker (see Patent Document 1).

Further, there is an electric rice cooker that not only can be separated into upper and lower parts from an induction heating cooker but also has a function of measuring the weight of an inner pot for storing rice and the like to improve the convenience of the user (Patent Document). 2).

Utility Model Registration No. 3103627 JP-A-2017-079207

In the electric rice cooker described in Patent Document 1, when the rice cooking unit is placed on the induction heating cooker, information on the heating temperature of rice and water, for example, can be obtained between the induction heating cooker and the rice cooking unit. Since it has not been replaced, it may not be possible to cook rice well on the rice cooking unit side.
Further, in the electric rice cooker of Patent Document 2, when the rice cooking unit is placed on the induction heating cooker, the rice cooking temperature information is exchanged between the induction heating cooker and the rice cooking unit by an infrared signal. However, there is a problem that the infrared communication unit, which is such an important control means, is overheated by receiving the high heat of the induction heating coil at the time of induction heating, which causes a failure or shortens the life. ..

The present invention has been made against the background of the above-mentioned problems, and a main object of the present invention is to prevent overheating of an infrared communication unit arranged inside an induction heating cooker.

The electric rice cooker of the first invention is
An induction heating cooker provided with a heating coil and a first input operating means for inputting heating conditions of the heating coil.
It is provided with an inner pot that houses the rice to be cooked and is heated by the heating coil, and a rice cooking unit provided with a second input operating means for inputting rice cooking conditions.
Inside the induction heating cooker, a cooling fan that supplies cooling air for cooling the heating coil, and control information for cooking rice between the induction heating cooker and the rice cooking unit are included. An infrared communication unit for transmitting infrared signals and an infrared communication unit are provided.
Inside the induction heating cooker, a first air passage and a second air passage into which the cooling air from the cooling fan is branched and introduced are provided, respectively.
The first air passage extends from the cooling fan to the outside of the induction heating cooker via the heating coil.
The second air passage is separated from the first air passage by a partition wall extending in the vertical direction with a plastic material, and the cooling of the first air passage supplied to the heating coil portion is performed. The cooling air from the cooling fan, which is different from the air, is directly introduced.
In said second air passage, a configuration of arranging the infrared communication unit.

According to the electric rice cooker of the first invention, it is possible to prevent overheating of the infrared communication unit and the power transmission coil arranged inside the induction heating cooker.

The electric rice cooker, which is the second invention, is
An induction heating cooker provided with a heating coil and a first input operating means for inputting heating conditions of the heating coil.
It is provided with an inner pot that houses the rice to be cooked and is heated by the heating coil, and a rice cooking unit provided with a second input operating means for inputting rice cooking conditions.
The induction heating cooker is provided with a cooling fan that supplies cooling air to the heating coil and an infrared communication unit for exchanging information necessary for controlling rice cooking between the rice cooking unit.
The heating coil is provided at the center of the left and right sides of the induction heating cooker.
The first input operating means is arranged at the left and right center portions of the induction heating cooker and at the front end portion.
A partition wall made of a plastic material extending from the bottom to the ceiling of the internal space of the induction heating cooker is provided between the heating coil and the first input operating means.
With partitioning the outside of the first feed air passage for guiding the cooling air toward the heating coil from the cooling fan in the partition wall,
In front of the first air passage, a second air passage into which the cooling air from the cooling fan is introduced is formed on the outside of the partition wall.
The infrared communication unit is configured to be arranged at a position behind the first input operating means and facing the second air passage .

According to the electric rice cooker of the second invention, it is possible to prevent overheating of the infrared communication unit arranged in the induction heating cooker.

The electric rice cooker according to the third invention is
An induction heating cooker provided with a heating coil and a first input operating means for inputting heating conditions of the heating coil.
It is provided with an inner pot that houses the rice to be cooked and is heated by the heating coil, and a rice cooking unit provided with a second input operating means for inputting rice cooking conditions.
The induction heating cooker is provided with a cooling fan that supplies cooling air to the heating coil and an infrared communication unit for exchanging information necessary for controlling rice cooking between the rice cooking unit.
Inside the induction heating cooker, a first air passage and a second air passage into which the cooling air from the cooling fan is branched and introduced are provided, respectively.
The first air passage extends from the cooling fan to the outside of the induction heating cooker via the heating coil.
The second air passage is separated from the first air passage by a partition wall extending in the vertical direction with a plastic material, and the cooling of the first air passage supplied to the heating coil portion is performed. The cooling air from the cooling fan, which is different from the air, is directly introduced.
The partition wall also serves as a magnetic shield for the heating coil.
The configuration is characterized in that the infrared communication unit is arranged in the second air passage.

According to the electric rice cooker of the third invention, it is possible to prevent overheating of the infrared communication unit arranged in the induction heating cooker.

The electric rice cooker, which is the fourth invention, is
An induction heating cooker provided with a heating coil and a first input operating means for inputting an induction heating condition located on the front side of the heating coil.
It is provided with an inner pot that houses the rice to be cooked and is heated by the heating coil, and a rice cooking unit provided with a second input operating means for inputting rice cooking conditions.
In the induction heating cooker, a right heating part and a left heating part for heating an object to be heated are arranged on both left and right sides of the upper surface with a center line in the front-rear direction.
The induction heating cooker includes a cooling fan that supplies cooling air to the heating coil, and an infrared communication unit for exchanging information necessary for controlling rice cooking between the induction heating cooker and the rice cooking unit. And, respectively,
In order to guide the cooling air from the cooling fan to the heating coil, an air passage for cooling the infrared communication unit and the power transmission coil for supplying electric power to the induction heating cooker is formed.
On the upper surface of the induction heating cooker, a right operation unit and a left operation unit for inputting heating conditions for each heating unit are arranged on both left and right sides of the center line.
Further, an operation surface of the main power switch is arranged on the upper surface of the induction heating cooker.
When the rice cooking unit is placed at a predetermined position of either the right heating unit or the left heating unit, the rice cooking unit is flat so as to cover the right heating unit or the left heating unit dedicated to the heating unit from above. Has a large size
The rice cooking unit is characterized in that the operating surface of the main power switch is exposed even when either the right heating unit or the left heating unit is obscured.

According to the electric rice cooker of the fourth invention, it is possible to prevent overheating of the infrared communication unit arranged in the induction heating cooker.
In addition, the right heating section and the left heating section can be used for cooking, respectively, and even if the rice cooking unit is placed directly above either the right heating section or the left heating section, the operation surface of the main power switch is exposed. Therefore, cooking can be performed using the heating unit and the operation unit on the side where the rice cooking unit is not placed.

The cooking system according to the fifth invention is
It is provided with an induction heating cooker having a top plate on the upper surface and a rice cooking unit having an inner pot built in and used so as to be placed close to or in contact with the top plate of the induction heating cooker.
The induction heating cooker includes a heating coil for inductively heating the inner pot, and a first input operating means located on the front side of the heating coil for setting energization conditions of the heating coil.
The rice cooking unit includes a second input operation means for setting rice cooking conditions.
The rice cooking unit covers the upper part of the first input operating means in a state where the rice cooking unit is placed at a predetermined position of the induction heating cooker.
The induction heating cooker includes a cooling fan that supplies cooling air to the heating coil, an infrared communication unit for exchanging information necessary for controlling rice cooking between the rice cooking unit, and the cooling fan. A partition plate extending in the vertical direction is sandwiched between a first air passage into which cooling air is introduced to cool the heating coil and a partition plate extending in the vertical direction with a plastic material in order to introduce cooling air from the cooling fan to cool the infrared communication unit. A second air passage on the front side of the first air passage is provided, respectively.
Before starting the rice cooking process by the rice cooking unit, the induction heating cooker confirms the placement of the rice cooking unit by the infrared communication unit, and then permits the input operation of the second input operation means. The configuration is characterized by having a main control device.

According to the cooking system of the fifth invention, overheating of the infrared communication unit of the induction heating cooker can be prevented by the cooling air of the cooling fan, and before the rice cooking process by the rice cooking unit is started, the rice cooking process can be prevented. The placement of the rice cooking unit is confirmed by the infrared signal, and then the input operation of the input operation means of the rice cooking unit is permitted. Therefore, when the predetermined rice cooking unit is placed in the proper position, rice cooking is permitted and it is safe. It is possible to improve the sex.

According to the electric rice cooker of the present invention, it is possible to prevent overheating of the infrared communication unit of the induction heating cooker.
Further, according to the cooking system of the present invention, overheating of the infrared communication unit of the induction heating cooker is prevented, and rice cooking is permitted when the rice cooking unit is placed in a proper position, thus improving safety. be able to.

It is a perspective view of the electric rice cooker which concerns on Embodiment 1 of this invention. It is a vertical sectional view of the electric rice cooker of FIG. 1 in line XX. It is a top view of the part excluding the rear end part of the electric rice cooker of FIG. It is a vertical sectional view of the operation input part in the front part of the electric rice cooker of FIG. FIG. 1 is a vertical cross-sectional view 1 of the front portion of the electric rice cooker of FIG. FIG. 2 is a vertical cross-sectional view 2 of the front portion of the electric rice cooker of FIG. It is an enlarged plan view of the front part of the lid body of the electric rice cooker of FIG. It is a control block diagram which shows the structure of the induction heating cooker which induce-heats the electric rice cooker of FIG. It is a control block diagram which shows the structure of the electric rice cooker of FIG. It is explanatory drawing which shows the rice cooking process of the electric rice cooker of FIG. The operation relation explanatory drawing of the rice cooking unit of this invention and an induction heating cooker. FIG. 1 is a flowchart 1 showing a control operation of an induction heating cooker that induces and heats the electric rice cooker of FIG. FIG. 2 is a flowchart 2 showing a control operation of the induction heating cooker that induces and heats the electric rice cooker of FIG. FIG. 3 is a flowchart 3 showing a control operation of the induction heating cooker that induces and heats the electric rice cooker of FIG. FIG. 4 is a flowchart 4 showing a control operation of the induction heating cooker that induces and heats the electric rice cooker of FIG. FIG. 5 is a flowchart 5 showing a control operation of the induction heating cooker that induces and heats the electric rice cooker of FIG. FIG. 6 is a flowchart 6 showing a control operation of the induction heating cooker that induces and heats the electric rice cooker of FIG. FIG. 7 is a flowchart 7 showing a control operation of the induction heating cooker that induces and heats the electric rice cooker of FIG. It is the flowchart 1 which shows the control operation of the rice cooking unit of the electric rice cooker of FIG. It is a flowchart 2 which shows the control operation of the rice cooking unit of the electric rice cooker of FIG. It is a flowchart 3 which shows the control operation of the rice cooking unit of the electric rice cooker of FIG. It is a vertical sectional view of the electric rice cooker which concerns on Embodiment 2 of this invention. It is a vertical sectional view of the operation input part in the front part of the electric rice cooker of FIG. It is a control block diagram which shows the structure of the induction heating cooker which induces heating of the electric rice cooker of FIG. It is a vertical sectional view of the lower front part of the electric rice cooker which concerns on Embodiment 3 of this invention. It is a vertical sectional view of the operation input part in the front part of the electric rice cooker of FIG. It is a vertical sectional view of the lower left side surface of the electric rice cooker of FIG. It is explanatory drawing which shows the whole image of one house (household) using the electric rice cooker which concerns on Embodiment 4 of this invention. It is a vertical sectional view of the electric rice cooker shown in FIG. 28. It is a top view of the lid body of the electric rice cooker shown in FIG. 28. It is explanatory drawing which shows the cooperation relationship between the induction heating cooker and the electric power command device at home shown in FIG. 28 in chronological order. It is a flowchart which shows the step of the reserved rice cooking operation of an electric rice cooker. It is a flowchart which shows the monitoring and notification operation of an electric rice cooker. FIG. 1 is a flowchart showing a control operation of an induction heating cooker and a rice cooking unit according to a fifth embodiment of the present invention. FIG. 2 is a flowchart 2 showing a control operation of the induction heating cooker and the rice cooking unit of FIG. 34. FIG. 3 is a flowchart 3 showing a control operation of the induction heating cooker and the rice cooking unit of FIG. 34. It is a flowchart which shows the control operation of the rice cooking unit of FIG. It relates to Embodiment 6 of this invention, and is the flowchart which shows the control operation of an induction heating cooker. It relates to Embodiment 7 of this invention, and is the perspective view of the electric rice cooker. FIG. 1 is a plan view 1 of a lid of a rice cooking unit of the electric rice cooker of FIG. 39. FIG. 2 is a plan view 2 of a lid of a rice cooking unit of the electric rice cooker of FIG. 39. It is a block diagram which shows the structure of the control device of the rice cooking unit of FIG. 39. It is a flowchart which shows the control operation at the time of stew cooking with the rice cooking unit of FIG. 39. It is explanatory drawing of the control pattern in the stew cooking of the rice cooking unit of FIG. 39. It relates to Embodiment 8 of this invention, and is the top view of the electric rice cooker. FIG. 5 is a vertical cross-sectional view taken along line XX of the electric rice cooker shown in FIG. 45. It relates to Embodiment 9 of this invention, and is the top view of the electric rice cooker. FIG. 47 is a vertical cross-sectional view taken along line XX of the electric rice cooker shown in FIG. 47. It is a top view of the lid body of the rice cooking unit of the electric rice cooker of FIG. 47. FIG. 1 is a flowchart 1 showing a control operation during rice cooking in the rice cooking unit of FIG. 47. FIG. 2 is a flowchart 2 showing a control operation during rice cooking in the rice cooking unit of FIG. 47. FIG. 3 is a flowchart 3 showing a control operation during rice cooking in the rice cooking unit of FIG. 47. It is a vertical sectional view of the electric rice cooker which concerns on Embodiment 10 of this invention. It is an overall plan view which shows the positional relationship of the built-in type induction heating cooker which concerns on Embodiment 11 of this invention, and the electric rice cooker which is placed on it. FIG. 5 is a vertical cross-sectional view taken along the line X1-X1 of FIG. 54. FIG. 5 is a vertical cross-sectional view taken along the line X2-X2 of FIG. 54.

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 one. Further, in the following drawings, those having the same reference numerals are the same or equivalent thereof, and this shall be common to the entire text of the specification. Furthermore, the forms of the components represented in the full text of the specification are merely examples, and are not limited to these descriptions.

Embodiment 1.
Hereinafter, the first embodiment shown in FIGS. 1 to 21 will be described.
FIG. 1 is a perspective view of an electric rice cooker according to a first embodiment of the present invention. FIG. 2 is a vertical cross-sectional view taken along line XX of the electric rice cooker of FIG. Further, in FIG. 2, the cross-sectional display (hatching) is omitted for some configurations.

It is assumed that the double-headed arrow shown by the solid line in FIG. 1 indicates that the R direction is the right direction of the rice cooking unit (also referred to as “ohitsu portion”) 1 and the induction heating cooker 10. The L direction is the left direction.
It is assumed that the BU direction of the double-headed arrow shown by the broken line in FIG. 1 is the direction behind the rice cooking unit 1 and the induction heating cooker 10. FR also indicates the direction in front of it.

As shown in FIG. 1, the electric rice cooker 100 includes a rice cooking unit 1 and an induction heating cooker 10. The rice cooking unit 1 is only placed on the top plate 22 constituting the upper surface of the induction heating cooker 10, and is not fixed by connecting means such as screws. Therefore, if the rice cooking unit 1 is lifted, the induction heating cooker 10 It can be easily separated from the top surface. The induction heating cooker 10 is a member on which the rice cooking unit 1 is placed, and is formed in a substantially L shape in a side view of the electric rice cooker 100, for example.

As shown in FIGS. 1 and 2, the rice cooking unit 1 includes a square (cubic) main body 1A, a lid 1B connected to the main body 1A by a hinge portion (not shown), and a handle (FIG. 1). (Not shown), the inner pot 3, the inner pot temperature detecting means 5, the power feeding means 6 mainly composed of the power feeding coil, the power receiving coil 7, the lid opening / closing button 8, the lid heating means 9A, and the inside. It includes a pot side heating means 9B, a display means 11 which is an example of the notification means 70, and a second input operation means 12 for inputting rice cooking conditions and the like by the user. Reference numeral 18 denotes an operation unit for measuring the weight of rice, which will be described later, and a plurality of operation keys 18A are arranged. One operation key (switch) 18A is a weight measurement start key, and there is also an operation key (switch) 18A that cancels the measurement result.

Except for the lid 1B, the square case constituting the outer shell of the rice cooking unit 1 is made of a plastic material. 1F indicates the front wall surface, and 1R indicates the right wall surface (right side surface).
Similarly, the main body case 10A forming the outer shell of the induction heating cooker 10 is also made of a plastic material. 10F is the front wall surface of the main body case 10A, and 10R is the right wall surface.

The induction heating cooker 10 has a cooling fan 13, an induction heating coil 14, a power transmission coil 17, a magnetic shield plate 19, a control device 50, and an outside air temperature for detecting the temperature of indoor air such as a kitchen in the internal space thereof. The detection means 15 and the like are provided. The induction heating coil is referred to as a "heating coil" in the following description.

The magnetic shield plate 19 has a thin metal plate layer on the inside and a plastic material on the outside. As shown in FIG. 3, in a plan view, the magnetic shield plate 19 extends from the rear BU to the front FR, and is a large semicircle in the middle. It bends like a shape and extends to the rear BU again. The magnetic shield plate 19 forms the outer shell of the first air passage SH1 for allowing the cooling air to flow around the heating coil 14. That is, the magnetic shield plate 19 itself is also one of the partition walls.

In the first embodiment, the "blower path" refers to a path that sends wind to the downstream side with respect to the cooling fan 13, in other words, to the outside of the induction heating cooker 10. On the contrary, the path of sucking air from the upstream side with the cooling fan 13 as a reference, in other words, from the outside of the induction heating cooker 10, is called an "intake path".

Reference numeral 98 denotes a vent, which is formed at the rear end portion 19A of the magnetic shield plate 19.
The cooling air blown from the cooling fan 13 travels from the vent 98 toward the front FR side so as to pass through the inside of the first air passage SH1, then turns in the opposite direction, and is provided at the rear portion on the left side. It is discharged to the outside of the induction heating cooker 10 through the exhaust port (not shown).

Reference numeral 99 denotes a wind direction plate arranged on the upstream side of the cooling air flow when viewed from the cooling fan 13. What is indicated by a thick arrow in FIG. 2 is a flow of cooling air generated in the internal space of the induction heating cooker 10 by the cooling fan 13.

In FIGS. 2 and 3, 47 is a partition wall. The partition wall is formed so as to surround the magnetic shield plate 19 in a semicircular shape in a plan view at a distance from the periphery of the magnetic shield plate 19, and the space between the partition wall 47 and the magnetic shield plate 19 is a second air passage. SH2.

As shown in FIG. 3, the second air passage HS2 has an inlet for cooling air from the cooling fan 13 on the right side of the rear BU, and conversely has an outlet on the left rear BU side. .. And it is a U-shaped air passage in a plan view.

The inside of the induction heating cooker 10 is partitioned back and forth by the partition wall 47 at the rear portion of the first input operating means 20, and air does not flow through the space on the front FR side and the rear BU side of the partition wall 47. It has become like.

The main body 1A of the rice cooking unit 1 is a member for accommodating the inner pot 3, and a lid 1B and a U-shaped handle (not shown) are attached to the main body 1A. Both ends of the handle are rotatably fixed to the left and right side surfaces of the electric rice cooker main body 1A, and are used when lifting the entire rice cooker unit 1.

The lid 1B is, for example, a square or rectangular member in a plan view provided so as to cover the entire upper surface of the main body 1A. The lid body 1B has a flat shape having almost the same size as the flat shape of the main body 1A.

The inner pot 3 is a substantially bottomed tubular member having an opening at the top. It is made of a material such as magnetic metal or carbon, and an object to be cooked such as rice is put into the inner pot 3. The inner pot temperature detecting means 5 is a temperature detecting means (also referred to as “temperature monitoring means”) for detecting the temperature of the inner pot 3, and is composed of, for example, a thermistor 5A. The thermistor measures the temperature by contacting the outer surface of the inner pot 3, but an infrared temperature sensor 5B or the like that detects the temperature without contact may be used. As shown in FIG. 2, the infrared temperature sensor 5B is installed inside the induction heating cooker 10 and receives infrared rays radiated from the inner pot 3 as shown by the arrow of the broken line to measure the temperature.

The power feeding means 6 is, for example, a power storage means provided on the rear side (rear surface) side of the rice cooking unit 1 with respect to the inner pot 3. The power feeding means 6 is composed of, for example, a secondary battery 95 (see FIG. 8) such as a lead storage battery, a nickel hydrogen storage battery, and a lithium ion storage battery. The power feeding means 6 is not limited to being composed of the secondary battery 95, and may be composed of a primary battery such as a dry battery. As described above, when the power feeding means 6 is composed of a primary battery, it is desirable to provide the power feeding means 6 at a position where the power feeding means 6 can be easily replaced in consideration of the possibility of frequently replacing the power feeding means 6.

The power receiving coil 7 is, for example, a coil provided inside the rice cooking unit 1 and functions to supply power to the power feeding means 6 based on the power sent from the power transmitting coil 17. As a method of supplying power to the power feeding means 6 without contact, there are an electromagnetic induction method, a magnetic field 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 opening / closing button 8 is configured so that the lid 1B is released from the main body 1A by applying a force from the front side to the rear side of the rice cooking unit 1, for example, on the front surface of the main body 1A. It is provided. For example, in the state shown in FIG. 1, the lid 1B is locked to the main body 1A by applying a force from the front side to the rear side of the rice cooking unit 1 to the lid opening / closing button 8 (shown). It is released by the force of a spring mechanism (not shown) built in the rear of the lid 1B.

The lid heating means 9A is a heating means provided above the inner pot 3, and is provided inside, for example, the lid 1B. The inner pot side heating means 9B is a heating means provided on the side of the inner pot 3, and is provided inside, for example, the main body 1A. When the rice cooking unit 1 is correctly placed on the induction heating cooker 10, the lid heating means 9A and the inner pot side heating means 9B are driven by the electric power of the external power supply supplied from the induction heating cooker 10. Will be done. When the rice cooking unit 1 is not placed on the induction heating cooker 10, the lid heating means 9A and the inner pot side heating means 9B are driven by, for example, the electric power of the power feeding means 6.

The display means 11 is composed of two display screens. The two display screens 11A and 11B are display means for displaying various information of the electric rice cooker 100 on the screen, and are composed of, for example, an LCD (Liquid Crystal Display), an organic EL (Electroluminescence), and the like.

The first display screen 11A provided on the lid 1B displays, for example, the time during which heat can be retained when the rice cooking unit 1 is removed from the top of the induction heating cooker 10. The first display screen 11A also displays, for example, the electricity storage state of the power feeding means 6. The first display screen 11A also displays, for example, the current storage state within the range of 0% to 100%. Further, the first display screen 11A displays the time required for the charging of the power feeding means 6 to be completed.

The second display screen 11B arranged on the front surface of the main body 1A displays information such as the weight of rice to be cooked and the optimum amount of water in characters and numbers.

The second input operating means 12 is arranged at the front portion of the lid body 1B. The second input operation means 12 is an operation means for receiving an operation input or the like for executing a process such as a preheating step, a rice cooking step, or an unevenness step. A plurality of press-type input keys are arranged. Details will be described with reference to FIG. A touch-type input key may be provided in place of or in combination with the pressing-type input key.

Further, the first display screen 11A is arranged at the same position as the second input operation means 12. Then, with the second input operation means 12, the user can input various rice cooking conditions such as the amount of rice cooked, the brand of rice, the hardness of rice cooked, and the rice cooking completion time and time zone in the case of reserved rice cooking, and the input result is Can be confirmed each time on the first display screen 11A. Details will be described with reference to FIG.

The cooling fan 13 is a blowing means for releasing the heat generated in the control device 50 composed of a semiconductor integrated circuit, an electronic circuit, or the like in the induction heating cooker 10 into the air. When the cooling fan 13 rotates, an air flow from the cooling fan 13 toward the heating coil 14 side is generated. The heating coil 14 heats the inner pot 3 itself by the generated magnetic field lines, and heats the food to be cooked such as rice and water stored in the inner pot 3. For example, the rice cooking unit 1 induces heating. It is provided so as to be located below the inner pot 3 in a state of being placed on the cooker 10. The heating coil 14 is formed by winding a thin copper wire or the like in a donut shape.

The power transmission coil 17 supplies electric power from the induction heating cooker 10. The power transmission coil 17 is located on the upstream side of the air flow of the cooling fan 13 with respect to the heating coil 14. That is, the power transmission coil 17 is located on the rear side of the induction heating cooker 10 with respect to the heating coil 14, and is located on the front side with respect to the cooling fan 13. By providing the power transmission coil 17 in this way, it is possible to reduce the possibility that the heating coil 14 is cooled and the air whose temperature has risen is supplied to the power transmission coil 17.

The magnetic shield plate 19 is a member that shields electromagnetic waves emitted from the heating coil 14 from reaching the power transmission coil 17. As described above, the magnetic shield plate 19 has a constant height so as to surround the three directions except the rear side of the heating coil 14, and is provided in an annular shape in a plan view. The magnetic shield plate 19 extends upward so as to be close to or in contact with, for example, the lower surface of the top plate 22 at the top of the induction heating cooker 10.

The magnetic shield plate 19 is not limited to the example of FIG. 3, and may be provided so as to be located at least between the heating coil 14 and the power transmission coil 17. Further, it may be provided so as to be located between the infrared signal transmission / reception unit 34 (infrared communication unit) and the heating coil 14. In FIG. 2, the rear end 19B located between the power transmission coil 17 and the heating coil 14 is not shown, so that the power transmission coil 17 can be seen.

Reference numeral 96 denotes a large flat area plastic partition plate installed horizontally, and the partition plate constitutes the bottom surface of the first air passage SH1.
Reference numeral 96A is a through hole formed in the central portion of the partition plate 96. This through hole is formed directly above the infrared temperature sensor 5B that senses infrared rays radiated from the inner pot 3 and senses the temperature in a non-contact manner, and is open so as to allow infrared rays to pass through. The through hole 96A may be closed by an infrared ray-transparent glass plate or the like. In this way, since air does not leak downward from the through hole 96A, the flow of the cooling air in the first air passage SH1 is stabilized.

A lower space 108 surrounded by a magnetic shield plate 19 is partitioned below the partition plate 96, and an infrared temperature sensor 5B fixed by a support substrate 32 is arranged in this space. Since this structure is used, the infrared temperature sensor 5B is less likely to receive high heat from the heating coil 14, so that more accurate temperature detection can be performed.

The outside air temperature detecting means 15 is for detecting the temperature outside the space in which the electric rice cooker 100 is placed. It is installed on the wall surface of the rear vertical portion 16 that stands vertically to the rear of the induction heating cooker 10. The detection temperature of the outside air temperature detecting means 15 is used together with the detection temperature of the inner pot temperature detecting means 5 for calculating the heat retention possible time described later.
Although the outside air temperature detecting means 15 is provided in the induction heating cooker 10 in the first embodiment, it may be provided in the rice cooking unit 1.

In FIG. 1, reference numeral 2 denotes legs arranged one by one at four corners of the bottom surface of the rice cooking unit 1. A weight sensor 4 is arranged inside the leg, and the weight of the rice cooking unit 1 can be measured in grams. This weight sensor will be described in detail later.

In FIGS. 1 and 3, reference numeral 20 denotes a first input operating means arranged in a horizontally long strip on the front portion of the upper surface of the induction heating cooker 10. In this input operation means, various push-type input buttons (keys) are arranged. In this input operation means, various conditions such as heating power, cooking menu (boiled water, simmered food, etc.), cooking time, etc. can be input so that the induction heating cooker 10 can perform induction heating cooking independently of the rice cooking unit 1. ..
In a state where the rice cooking unit 1 is placed at a predetermined position on the upper surface of the induction heating cooker 10, as shown in FIGS. 1 and 2, the first input operating means 20 is covered by the rice cooking unit 1 from above. It will be in the state of being cooked.

The first input operation means 20 is provided with a display means 70D composed of a liquid crystal display screen, a light emitting element (LED: a light emitting diode), and the like, and the input result by the first input operation means 20 is displayed at any time. LED.

Reference numeral 21 denotes a protrusion (convex) formed long to the left and right on the upper surface of the induction heating cooker 10 so as to cross the rear of the first input operating means 20 just laterally. The protrusion 21 has a length that extends over the entire width of the upper surface of the induction heating cooker 10, and is made of a material having heat resistance and elasticity, and is formed of a material having heat resistance and elasticity. It is fixed to the upper surface of the top plate 22 formed of heat-resistant glass or the like constituting the above. The protrusion is made of, for example, silicon rubber.

In FIG. 2, reference numeral 23 denotes an inner lid that opens and closes the upper surface opening of the inner pot 3 so as to be openable and closable. It is a thin metal plate having good thermal conductivity such as aluminum, and has a circular planar shape. The electric heater which is the lid heating means 9A is arranged on the upper surface of the inner lid 23.

Reference numeral 24 denotes a sealing packing attached around the inner lid 23, which is made of a material having high heat resistance and elasticity such as silicon rubber. When the lid 1B is closed, the inner pot 3 is sealed by the inner lid 23 and the packing 24. The inner lid 23 is formed with a small hole for removing steam during rice cooking, and a steam discharge passage communicating with the outside of the rice cooking unit 1 is formed so as to penetrate the inside of the lid 1B. ..

In FIG. 2, reference numeral 25 denotes an inner body portion made of a heat-resistant resin or a non-magnetic metal (for example, aluminum) that does not cause induction heating, which surrounds the inner pot 3 in close proximity. An electric heater which is a heating means 9B on the side surface of the hook is wound.

Reference numeral 26 denotes a wireless communication module (wireless communication unit) housed in the rear vertical portion 16, which enables wireless communication with local network equipment (including a power command device) installed in the home. Information can be exchanged with remote mobile information terminals and communication devices via an Internet line. It can also receive a remote control signal for the rice cooking unit 1. As the wireless communication means, for example, well-known means such as Bluetooth (registered trademark) and Wi-Fi (registered trademark) can be adopted.

In FIG. 2, 27 is a support plate that supports the second display screen 11B. Reference numeral 28 denotes a window formed in the inner body portion 25 corresponding to the center of the bottom portion of the inner pot 3, and is covered with a material that transmits infrared rays. Reference numeral 29 denotes a window provided at a position corresponding to the window, which is formed on the top plate 22. The top plate 22 is usually provided with a coating film or the like that blocks visible light on the back (lower) surface so that the internal structure of the induction heating cooker 10 cannot be seen. Since there is no such coating film, infrared rays easily pass through.

In FIG. 2, reference numeral 30 denotes a permanent magnet installed on the rear surface of the rice cooking unit 1 so as to correspond to a reed switch 31 (see FIG. 3) which is one of the mounting detection sensors arranged inside the rear vertical portion 16. is there.

Reference numeral 32 denotes a support substrate, which supports the infrared temperature sensor 5B constituting the inner pot temperature detecting means 5, and is horizontally installed inside the induction heating cooker 10.

Reference numeral 34 denotes an infrared signal transmitting / receiving unit (also referred to as an “infrared communication unit”) that constitutes a part of the reference position determining means 33, which is outside the magnetic shield plate 19 and behind the first input operating means 20. It is located at the position of. Two or more infrared signal transmission / reception units 34 are installed instead of one, at least one for transmitting infrared signals and at least one for receiving infrared signals. In that case, if they are installed side by side in an approaching state, the windows 37 and 38, which will be described later, can be shared, which is structurally advantageous.

Reference numeral 35 denotes an infrared signal transmitting / receiving unit (also referred to as “infrared communication unit”) that constitutes a part of the reference position determining means 33, and is arranged on a vertical extension line of the infrared signal transmitting / receiving unit 34. Similar to the infrared signal transmission / reception unit 34, two or more infrared signal transmission / reception units 35 may be installed instead of one.

Reference numeral 36A is a first signal processing unit that processes (encodes, decodes, etc.) an infrared signal. A similar second signal processing unit 36B is also provided on the infrared signal transmitting / receiving unit 34 side. In wireless communication, since there is a concern that electromagnetic noise generated while driving the induction heating coil 14 may cause a failure, communication is performed using an infrared signal. Reference numeral 101 is a power plug, and 102 is a power cord. The functions of the signal processing units 36A and 36B may be performed by the control device 50 or the main control device 80.

As can be seen from FIG. 3, the infrared signal transmission / reception unit 34 is arranged in the intermediate portion of the second air passage SH2 formed between the partition wall 47 and the magnetic shield plate 19.
Further, in the second air passage SH2, the power transmission coil 17 is arranged on the most downstream side of the flow of the cooling air when viewed from the infrared signal transmission / reception unit 34. Therefore, when the cooling air from the cooling fan 13 flows as shown by the arrow in FIG. 3, the infrared signal transmission / reception unit 34 and the power transmission coil 17 are cooled.

Next, FIG. 4 will be described. Reference numeral 37 denotes a window formed on the top plate 22, which is intended to transmit an infrared signal in the same manner as the window 29.
Reference numeral 39 denotes a heat-resistant plastic bottom plate that constitutes the bottom surface of the rice cooking unit 1, and forms a window 38 for transmitting an infrared signal.

Reference numeral 40 denotes a support substrate that supports the infrared signal transmission / reception unit 34. This support substrate is horizontally supported by connecting the left end portion to the partition wall 47 described later.

In FIG. 4, 1F is the front wall surface of the main body 1A of the rice cooking unit 1, and 10F is the front wall surface of the main body case 10A forming the outer shell of the induction heating cooker 10.
In FIG. 4, the range 20W in the front-rear direction of the first input operating means 20 is as shown by the solid arrow. This will be described in detail later.

In the first input operation means 20, a plurality of pressing electronic switches 41 are arranged in a horizontal row at regular intervals. When the operation unit 41A at the top of each electronic switch 41 is pressed, the internal contacts are closed and a predetermined signal can be generated. 41B is a pressing rod, which is made of plastic.

Reference numeral 42 denotes a circuit board on which each electronic switch 41 is mounted. Reference numeral 43 denotes a protective sheet (or protective plate) made of a thin and curved plastic material, which covers the operation portion 41A in a sealed state to prevent water from entering from above. When the protective sheet 43 is pressed by the user's finger, the operation unit 41A moves downward by a minute dimension and the internal contact of the electronic switch 41 is closed.
Reference numeral 44 denotes a through hole formed in the support frame 45 made of Prestik, which has a diameter larger than the external dimension of the operation portion 41A so as to allow the operation portion 41A to move up and down.

The first input operation means 20 includes a display means 70D for displaying the operation input result. Although not shown, it is composed of a liquid crystal display screen, a light emitting diode element (LED), and the like. The LED illuminates the protective sheet 43 of the first input operating means 20 with light from below, displays a specific portion of the protective sheet 43 in red or yellow, and informs the user of the input result of each electronic switch 41. indicate.
Further, the liquid crystal display screen has a configuration in which an opening is provided in a part of the protective sheet 43, which is covered with a transparent sheet from above, and the liquid crystal display screen is installed so as to face the opening.

In the first embodiment, the input function of the first input operation means 20 will be enabled / disabled. However, when the input function is disabled, the display function of the display means 70A is also disabled at the same time. The screen display is turned off. On the contrary, when the input function of the first input operation means 20 is enabled (when it is first activated or when the invalidation is canceled), it is enabled at the same time and the display operation is performed.

In FIGS. 4 to 6, S is a gap formed between the upper surface of the induction heating cooker 10 and the facing surface of the bottom plate 39 of the rice cooking unit 1, and has a height of about 10 mm to 15 mm.
FIG. 5 shows a state in which rice is being cooked, and since the rice cooking unit 1 contains predetermined rice and water in the inner pot 3, it is heavier than the weight of the rice cooking unit 1. In this state, the distance G1 between the front wall surface 1F of the main body 1A of the rice cooking unit 1 and the front wall surface 10F of the main body case 10A forming the outer shell of the induction heating cooker 10 is about several mm. Therefore, the gap S communicates forward with the interval G1. Not only the front wall surface 1F of the main body 1A of the rice cooking unit 1 but also the left and right wall surfaces and the lower ends of the left and right both wall surfaces of the main body case 10A forming the outer shell of the induction heating cooker 10 are aligned on the same horizontal plane. The gap S communicates with the front and both the left and right sides.

The protrusion (convex) 21 narrows the facing distance H (see FIG. 6) between the bottom plate 39 of the rice cooking unit 1 and the upper surface of the first input operating means 20. In other words, since the inside of the gap S is narrowed, the hot air generated at the position directly above the induction heating coil 14 behind the protrusion 21 gets over the protrusion 21 and the first input operating means 20 Flow to the side is suppressed. Therefore, even if the bottom surface of the rice cooking unit 1 becomes hot due to the induction heating coil 14 when the rice cooking operation is performed, it is possible to prevent the portion of the first input operating means 20 from becoming overheated.

After the rice cooking unit 1 has been used and the rice cooking unit 1 is removed from the top of the induction heating cooker 10, the portion of the first input operating means 20 is hot and immediately another heating by the induction heating cooker 10. It does not lead to the situation that cooking cannot be started.

In FIG. 4, 20W indicates the width of the first input operating means 20 in the front-rear direction, which is about 50 mm to 70 mm.

In FIGS. 5 and 6, the weight sensor 4 is fixed to the upper surface of the bottom plate 39, and a strain sensor 4S (not shown) is arranged directly above the thick strut-shaped leg 2. The weight can be measured by the output from the strain sensor 4S according to the force of pushing the strain sensor 4S by the legs 2, that is, the weight of the rice cooking unit 1. A weight sensor using such a strain sensor 4S has already been proposed for a long time, and detailed description thereof will be omitted. Reference numeral 46 denotes a through hole formed in the bottom plate 39, which has a size (caliber) that allows the leg portion 2 to move up and down.

The state shown in FIG. 5 is a state in which the rice cooking unit 1 is placed and the rice is being cooked. In the state shown in FIG. 6, although the rice cooking unit 1 is placed, the inner pot 3 is used. It is light because it contains only rice and does not contain the required amount of water. Therefore, the facing distance G2 is larger than the facing distance G1.

Next, the second input operation means 12 and the first display screen 11A will be described with reference to FIG. 7.
FIG. 7 is a plan view of the first half of the lid 1B of the electric rice cooker 100 according to the first embodiment. A first display screen 11A composed of a liquid crystal display screen or the like is arranged substantially in the center of the left and right sides of the lid 1B.

On the first display screen 11A, the time, the rice type display unit 60, the hardness display unit 61, and the menu display unit 62 are displayed. Further, on the left side of the outside of the first display screen 11A, a rice seed switch 63, a hardness switch 64, a menu switch 65, and an off / heat retention switch 66 are provided, and on the outside of the first display screen 11A. A rice cooking switch 67, a reservation switch 68, and a time switch 69 are provided on the right side. After the rice cooking operation is started, when the off / heat retention switch 66 is pressed, a command signal for stopping rice cooking is issued to the control device 50. Further, after the heat retention operation is started, when the off / heat retention switch 66 is pressed, a command signal for stopping the heat retention is issued. In the first embodiment, the control program is such that the heat retention process is automatically executed by the control device 50 within a certain period of time following the unevenness process.

12V is a switch for selecting a voice input mode, and when this is pressed, a guidance "switched to voice input mode" is displayed from the voice notification means 90V described later, and then voice input can be performed. If the switch 12V is pressed again, the voice input mode is canceled. The voice notification means 90V informs that "the voice input mode has been canceled". The voice input mode is an example of the voice input means.

Reference numeral 91 denotes a wireless communication unit (input / output means) that performs short-range wireless communication (NFC), and communication can be performed by approaching or contacting an information processing terminal having an NFC function.

The rice type switch 63 is an input means for setting the type of rice to be cooked. Each time the rice type switch 63 is pressed, the display of the rice type display unit 60 is switched to "white rice", "washless rice", "brown rice", and "germinated brown rice". Information about the type of rice set by the rice type switch 63 is input to the control device 50 described later.

In FIG. 7, the rice type switch 63 is described together with the brand. Although the specific brand of rice can be specified by this switch 63, there are two types of input functions (brand and rice type) depending on how the switch 63 is pressed. Only one can be selected from the list. A detailed description will be omitted.

The hardness switch 64 is an input means for setting the hardness of the cooked product. Each time the hardness switch 64 is pressed, the display of the hardness display unit 61 is switched to "hard", "normal", and "soft" in response to this. The information regarding the hardness of the cooked food input to the hardness switch 64 is input to the control device 50, and the control device 50 selects the hardness of the cooked food. When "hard" is set, the rice is cooked in the "hard mode" described later, and when "soft" is set, the rice is cooked in the "soft mode" described later. In the first embodiment, the hardness switch 64 and the control device 50 constitute a hardness selection means. In "normal", rice is cooked in "normal (standard) mode".

The electric rice cooker described in the first embodiment and the subsequent embodiments has two types of cooking, a "soft mode" and a "hard mode" in which cooked rice is cooked harder than the soft mode. It shall be possible.

The menu switch 65 is an input means for setting the rice cooking menu. Each time the menu switch 65 is pressed, the display content of the menu display unit 62 is switched to "risotto", "porridge", and "cooking". Further, the information regarding the rice cooking menu set by the menu switch 65 is input to the control device 50.

The off / heat retention switch 66 is an input means for switching the end / start of the heat retention operation, the rice cooking switch 67 is an input means for instructing the start of rice cooking, the reservation switch 68 is an input means for setting a rice cooking reservation, and the time switch 69. Is an input means for setting a time such as a current time or a reserved time. The information set by the off / heat retention switch 66, the rice cooking switch 67, the reservation switch 68, and the time switch 69 is input to the control device 50.

The various switches 63 to 69 constitute a pressing type input means 12P (see FIG. 9). If a touch-type switch is used instead of the pressing-type switches 63 to 69, the touch-type input means 12T is used. In FIG. 9, which will be described later, the touch-type input means 12T is also illustrated.

Next, the configuration of the control relationship of the induction heating cooker 10 will be described with reference to FIG. In FIG. 8, reference numeral 80 denotes a main control device, which is configured with a microcomputer as a core, and is a storage means 80R such as a semiconductor storage device (flash memory, ROM, RAM), and a time measuring means (clock circuit) for calculating time. ) Built-in 80T. The computer program that controls the overall heating control operation and various control data tables are stored in the storage means 80R.

Reference numeral 71 denotes a commercial power source (for example, 50 Hz or 60 Hz, and a voltage of 100 V or 200 V). The power supply unit 72 receives the power supply of the commercial power supply via the power cord 102 and the plug 101. The power supply unit 72 has a built-in rectifier circuit and the like, and has a function of converting the electric power into a predetermined voltage.

Reference numeral 73 denotes an inverter circuit, which receives electric power from the power supply unit 72, generates high-frequency electric power, and supplies the electric power to the induction heating coil 14. Various electric components such as semiconductor power control elements and switching elements are mounted on a substrate (not shown) of an inverter circuit.
Reference numeral 20 denotes the first input operating means, and the pressing type electronic switch 41 is used as the pressing type input means.

Reference numeral 70 denotes a notification means, which includes a display means 70D and a voice notification means 70V such as a voice synthesizer. The display means 70D includes a liquid crystal display screen and a semiconductor light emitting element (LED or the like). The state and conditions of the induction heating operation (for example, thermal power value, heating time) can be displayed by letters, numbers, figures, and the like.

Although not shown, the voice notification means 70V is provided with a buzzer and a speaker that emit sound. The display means 70D is arranged at a place where the first input operation means 20 is located as described above, so that when the user operates the first input operation means 20, the input result can be immediately confirmed. I have to.

Reference numeral 74 denotes a top plate temperature detecting means for measuring the temperature of the top plate 22 in contact with the top plate 22, for example, a thermistor is used. The temperature detection result data is transmitted to the main control device 80.

In FIG. 8, the object to be heated temperature detecting means 5B includes an infrared temperature sensor 5B that receives infrared rays radiated from the outer surface of the inner pot 3 and measures the temperature when the rice cooking unit 1 is mounted. There is. Since this temperature sensor can also measure the temperature of a general pot, frying pan, etc. other than the rice cooking unit 1, the temperature of the object to be heated (general metal pot, etc.) can be controlled by the main control device 80.

Next, the configuration of the control relationship of the rice cooking unit 1 will be described with reference to FIG. In FIG. 9, reference numeral 50 denotes a control device, which is configured with a microcomputer as a core, a storage means 50R such as a semiconductor storage device (flash memory, ROM, RAM), and a time measuring means (clock circuit) for calculating time. It has a built-in 50T. A computer program for rice cooking that controls the overall rice cooking control operation including conditions such as thermal power, energization time, and target heating temperature in the water absorption process and rice cooking (boiling) process, a computer program for measuring the weight of rice, and a computer program for measuring the weight of rice. The self-inspection program, the computer program for dealing with abnormalities, and the data tables for various controls are stored in the storage means 50R.

Reference numeral 93 denotes a sensor for detecting the opening of the lid body 1B, which is installed in the vicinity of the lid opening / closing button 8. When the mechanical lock of the lid body 1B is released, a lid opening signal is transmitted from this sensor to the control device 50.
The weight measuring means 94 includes the four weight sensors 4 described above and a processing circuit (not shown) for calculating the weight of the rice cooking unit 1 based on the output voltages from those sensors.
Reference numeral 12 denotes the second input operating means, and various pressing-type switches 63 to 69 provided on the lid 1B are used as the pressing-type input means 12P.

Reference numeral 90 denotes a notification means, which includes a first display screen 11A, a second display screen 11B, and a voice notification means 90V such as a voice synthesizer. Although not shown, the voice synthesizer 90V is provided with a buzzer and a speaker that emit sound.

Reference numeral 5A is a thermistor that contacts the inner pot 3 and measures the temperature thereof, and the data of the temperature detection result is transmitted to the control device 50 each time.

Reference numeral 95 denotes a secondary battery constituting the power feeding means 6, and is composed of, for example, a lead storage battery, a nickel hydrogen storage battery, a lithium ion storage battery, and the like. The power feeding means 6 is not limited to being composed of the secondary battery 95, and may be composed of a primary battery such as a dry battery.

The reference position determining means 33 determines whether or not the rice cooking unit 1 is placed at a predetermined position of the induction heating cooker 10. The determination result of the reference position determination means 33 is output to the control device 50. The control device 50 may have the function of the reference position determination means 33.

In the first embodiment, the reference position determination means 33 includes two means. One is a permanent magnet 30 (see FIG. 2) installed on the rear surface of the rice cooking unit 1 and a reed switch 31 (see FIG. 8) provided on the rear vertical portion 16 (one of the mounting detection sensors). It is a combination.
The other is a combination of a pair of infrared signal transmitting / receiving units 34, 35 as described above.

The reference position determination means 33 may adopt, for example, a configuration for determining whether or not the resistance value when a current is passed through the heating coil 14 is equal to or greater than the reference resistance value. Specifically, for example, when the control device 50 determines that the resistance value when a current is passed through the heating coil 14 is equal to or higher than the reference resistance value, the rice cooking unit 1 determines that the top plate 22 of the induction heating cooker 10 is used. Judge that it is in the correct position on. Further, when the control device 50 determines that the resistance value when a current is passed through the heating coil 14 is less than the reference resistance value, it is said that the rice cooking unit 1 is removed from the top of the induction heating cooker 10. judge.

The reference position determining means 33 may be configured to determine whether or not the rice cooking unit 1 is attached to a predetermined position of the induction heating cooker 10 based on the detection temperature of the infrared temperature sensor 5B. In this case, for example, when the detection temperature of the infrared temperature sensor 5B is equal to or higher than the threshold temperature, the control device 50 has a high possibility that the rice cooking unit 1 is attached to the induction heating cooker 10. It is determined that the rice cooking unit 1 is placed at a predetermined position. If the detection temperature of the infrared temperature sensor 5B is less than the threshold temperature, it is highly likely that the rice cooking unit 1 has been removed from the induction heating cooker 10, so it is determined that the rice cooking unit 1 is not mounted. To do.

The control device 50 is not limited to the configuration including the storage means 50R and the timekeeping means 50T. For example, the storage means 50R and the timekeeping means 50T may be configured separately from the control device 50, and the outputs of the storage means 50R and the timekeeping means 50T may be input to the control device 50.

Further, in the voice notification means 70V, the voice (guide voice) is output at a preset volume or a volume set by the user. In addition, those volumes can be set in multiple stages.

The control device 50 is based on, for example, the detection temperature of the thermistor 5A, which is the temperature detecting means of the inner pot 3, the threshold temperature stored in advance in the control device 50, and the detection temperature of the outside air temperature detecting means 15. Calculates the time from the initial temperature to below the threshold temperature, determines the heat retention possible time, and displays the heat retention possible time on the first display screen 11A. The higher the detection temperature of the thermistor 5A is higher than the threshold temperature, the longer it takes for the temperature of the inner pot 3 to reach the threshold temperature when the rice cooking unit 1 is removed from the induction heating cooker 10, so that the heat retention is maintained. The possible time is set long.

In this way, by displaying the heat retention possible time on the first display screen 11A, the user is urged to quickly eat the food to be cooked (rice), or the rice cooking unit 1 is induced to heat the cooker 10 It is possible to encourage people to keep the food (rice) warm by returning it to. Therefore, it is possible to reduce the possibility that the temperature of the cooked rice falls below the threshold temperature stored in advance in the control device 50 and the taste of the cooked rice deteriorates.

FIG. 10 is a diagram showing an example of a temperature change with time change of the electric rice cooker 100 according to the first embodiment of the present invention. The horizontal axis in FIG. 10 indicates time, and the vertical axis indicates the temperature of the inner pot 3.

The temperature of the inner pot 3 is, for example, the detection temperature of the thermistor 5A, which is the inner pot temperature detecting means 5. As shown in FIG. 10, when the preheating step is executed, the rice cooking step is executed after the preheating step is executed, and the unevenness step is executed after the rice cooking step is executed, the temperature of the inner pot 3 in the rice cooking step is executed. There are times when changes are steep. In this time zone when the temperature change of the inner pot 3 becomes steep, the electric power supplied to the heating coil 14 becomes large.

Therefore, in the time zone when the temperature change of the inner pot 3 becomes steep, the main control device 80 sends the power transmission coil 17 to the power transmission coil 17 in order to give priority to the heating of the food to be cooked (rice and water) over the power supply of the power supply means 6. It is advisable to stop the power supply of. Specifically, for example, when the change temperature of the inner pot 3 per unit time is equal to or higher than a predetermined value, the main control device 80 stops the power supply to the power transmission coil 17 and changes the inner pot 3 per unit time. When the temperature is lower than the predetermined value, the power supply to the power transmission coil 17 is continued. In this way, it is possible to reduce the possibility of hindering the temperature rise of the object to be heated in the rice cooking process. The main control device 80 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, it may be decided whether or not to stop the power supply to the power transmission coil 17 depending on whether or not the rice cooking process is performed. Specifically, when the main control device 80 ends the preheating process and starts the rice cooking process, the power supply to the power transmission coil 17 is stopped, the rice cooking process is completed, and the unevenness process is started. , The power supply to the power transmission coil 17 is started.

Further, for example, it may be determined whether or not to stop the power supply to the power transmission coil 17 depending on whether or not the current value supplied to the heating coil 14 is equal to or greater than the threshold current value. Specifically, when the current value supplied to the heating coil 14 is equal to or greater than the threshold current value, the main control device 80 stops the power supply to the transmission coil 17 and the current value supplied to the heating coil 14. Is less than the threshold current value, the power supply to the transmission coil 17 is continued.

In the first embodiment, as described above, the control device 50 of the rice cooking unit 1 and the main control device 80 of the induction heating cooker 10 are located between the infrared signal transmission / reception unit 34 and the infrared signal transmission / reception unit 35. By communication, at least during the rice cooking operation (from the preheating process to the unevenness process), the latest control data is always transmitted and received, and the rice cooking unit 1 and the induction heating cooker 10 cooperate with each other by infrared communication. It is carried out. When the "heat retention process" is performed after the unevenness process, infrared communication is performed during that period to periodically induce the temperature of the inner pot 3 of the rice cooking unit 1 and the like as the main control of the heating cooker 10. It may be monitored by the device 80.

Next, the operation of the electric rice cooker 100 according to the first embodiment will be described.
FIG. 11 is a diagram illustrating a mutual operation relationship between the rice cooking unit 1 of the present invention and the induction heating cooker 10. The operation steps after connecting the power plug 101 of the induction heating cooker 10 to the commercial power supply 71 are indicated by reference numerals SP1 to SP6.

Simply connecting the power plug 101 of the induction heating cooker 10 to the commercial power source 71 does not start the induction heating operation or the rice cooking operation (SP1).
Next, when the rice cooking unit 1 is placed on the induction heating cooker 10 (SP2), the reed switch 31, which is a mounting detection sensor, is turned on (SP3) if it is in the correct position.
From this stage, the rice cooking unit dedicated mode is set. Therefore, even if the user does not give any input operation or heating operation command on the side of the induction heating cooker 10, the induction heating cooker is automatically set within a predetermined time. An infrared signal for determining the reference position is transmitted from the 10 side to activate the rice cooking unit 1.

After that, when the rice cooking operation is started (SP4) and the rice cooking operation is completed (SP5), when the rice cooking unit 1 is lowered from the top of the induction heating cooker 10, the rice cooking unit dedicated mode is automatically canceled and the induction heating is performed. The cooker 10 alone can perform induced cooking using other cooking utensils such as a pot and a frying pan.

Next, FIG. 12 will be described.
FIG. 12 shows the operation steps of the induction heating cooker 10. The operation steps are shown in S1 to S12.
First, when the power plug 101 is connected to the commercial power supply 71, the reed switch 31 is turned ON (closed) if the rice cooking unit 1 is placed in the correct position (S1).

Then, even if the user does not operate the first input operating means 20 or the second input operating means 12 of the rice cooking unit 1, the main control device 80 includes the infrared temperature sensor 5B and other current sensors (FIG. (Not shown) starts a self-check for any abnormality in the internal components of the induction heating cooker 10 (S2).

If there is no abnormality, the main control device 80 drives the power transmission coil 17 and starts supplying a predetermined electric power. The notification means 70 is also activated (S3). On the other hand, the cooling fan 13 is started to operate in the "weak" mode (S4). Therefore, the power transmission coil 17 is cooled by the cooling air.

At this stage, the main control device 80 knows that the rice cooking unit 1 is placed in the correct position because the reed switch 31 is turned on. Next, the main control device 80 is in the reference position. The determination means (B) 33 is driven. Then, the infrared signal is transmitted from the infrared signal transmission / reception unit 34 toward the infrared signal transmission / reception unit 35 (S5).

After that, since the response signal is transmitted by infrared rays from the infrared signal transmission / reception unit 35 side, the reference position determining means 33 finally confirms that the rice cooking unit 1 is placed in the correct position in response to the response signal. (S6). If there is no predetermined response signal instantly after the infrared signal transmission / reception unit 34 transmits the infrared signal to the infrared signal transmission / reception unit 35, it means that the rice cooking unit 1 is not placed in the correct position. Alternatively, it is assumed that the cooking liquid from the previous cooking drips and sticks to the upper surface of the window 37 as dirt, which hinders infrared communication. In any of these cases, an error will occur on the main controller 80 side.

Since operation data, temperature data, and the like are exchanged between the two infrared signal transmission / reception units 34 and 35 even during the rice cooking operation, the rice cooking operation is not permitted even if the window 37 is dirty. If the reference position determination result is NG in step S6, the process proceeds to the abnormality response step shown in FIG. 16, which will be described later.

In the next step S7, the main control device 80 performs a process of invalidating the generation of the input command signal from the first input operating means 20. Specifically, the signal for generating the input signal of the first input operating means 20 is blocked so that the input signal is not generated, but the invalidating means is not limited to this method.

By the invalidation process of the input operation unit from the first input operation means 20, for example, even if the rice cooking unit 1 is momentarily lifted and the first input operation means 20 is operated, such an operation is mainly performed. Since it is not input to the control device 80, it is not possible to stop the rice cooking immediately before and start using the induction heating cooker 10 alone.

Next, in the induction heating cooker 10, the notification means 70 such as the voice notification means 70V notifies that the rice cooking operation is to be performed (S8).
In the next step S9, the rice cooking unit 1 enters a standby state in order to determine whether or not a command to start cooking rice has been issued. After placing the rice cooking unit 1, it takes time to actually start cooking rice, such as adjusting the amount of water in the inner pot 3. Therefore, the standby time is measured by the time measuring means 80T (S10).

For example, there is no command signal indicating that rice cooking has started (S11), there is no command signal for starting rice cooking via the wireless communication unit 26 (S12), and a predetermined time T1 (for example, 60 minutes) is set from the stage of step 10. When the lapse has passed (S13: see FIG. 13), the main control device 80 determines that the rice cooking is suspended for some reason.

As shown in FIG. 13, the main control device 80 issues a drive stop command for the power transmission coil 17 and stops the operation of the cooling fan 13 (S14).

Next, in the induction heating cooker 10, the notification means 70 such as the voice notification means 70V notifies that the rice cooking operation has been canceled (S15). When a predetermined time T2 (for example, 61 minutes) has elapsed from the stage of step 10 (S16), the main control device 80 cancels the invalidation process of the input operation unit from the first input operation means 20 (S17). .. Therefore, at this stage, for example, if the rice cooking unit 1 is moved to another place, the first input operating means 20 can be operated to start another cooking with the induction heating cooker 10. If the first input operating means 20 is not operated, the main control device 80 automatically shuts off the main power supply by itself, and operates in consideration of safety so that the heating operation is not carelessly performed. (S18).

Next, the case where there is a command signal to start cooking rice (see S11 in FIG. 12) will be described with reference to FIG.
Proceeding to step S19 of starting the rice cooking process, the main control device 80 acquires information on the rice cooking conditions by communication between the rice cooking unit 1 and the infrared signal transmission / reception units 34 and 35 (S20). For example, data indicating the heating time for cooking rice, the amount of cooked rice, and the like may be acquired.

In the next step S21, the cooling fan 13 is changed to the "strong" operation mode to drive the inverter circuit 73 (S22). As a result, the inner pot of the rice cooking unit 1 is induced and heated by the heating coil 14, and the temperature rises. Therefore, the preheating step is started, and then the rice cooking step is started.

The main control device 80 starts measuring the elapsed time in order to grasp the rice cooking time (S23), and also sends information indicating the rice cooking condition to a power command device (not shown) or the like via the wireless communication unit 26. Send.
The "rice cooking condition" refers to the heating time for cooking rice, the maximum power consumption, the amount of cooked rice, and the like. Even if the elapsed time is not grasped on the main control device 80 side, information such as the elapsed time from the start of rice cooking and the remaining heating time can be obtained from the rice cooking unit 1 side between the two infrared signal transmission / reception units 34 and 35 at any time. Since it can be obtained by the communication of the above step S23, the step S23 may be omitted.

As shown in FIG. 14, the main control device 80 subsequently determines and checks steps S26, S27, S28 and S29.
First, even during rice cooking, the reference position determining means 33 is driven again (S25), and it is checked at regular time intervals whether or not the rice cooking unit 1 is mounted (S26).

Further, it is checked whether or not the top plate 22 has an abnormally high temperature and whether or not the substrate on which the inverter circuit 73 is mounted is in an overheated state (S27).

Then, a check is made to see if a command to stop rice cooking has been issued (S28), and a check is made to see if the scheduled rice cooking time has been exceeded (S29). These checks are repeated at predetermined time intervals.

Then, when a predetermined rice cooking time (for example, 3 go rice cooking amount, 40 minutes in the standard course) specified in the operation program of the control device 50 has elapsed (S29), the notification means 70 of the induction heating cooker 10 is used. Notifies that the rice cooking operation is completed (S30).

Next, as shown in FIG. 15, a drive stop command for the power transmission coil 17 is issued (S31). Then, the drive of the inverter circuit 73 is stopped (S32). Further, the notification means 70 notifies that the unevenness process is started (S33).

The measurement of the elapsed time is started in order to grasp the unevenness time (S34), and when the predetermined unevenness process time (for example, 5 minutes or 10 minutes) has elapsed (S35), the operation of the cooling fan 13 is stopped (S35). S36). As a result, the heating coil 14 is sufficiently cooled at this stage, and the temperature of the top plate 22 is 40 ° C. to 50 ° C. or lower.

Then, the main control device 80 cancels the invalidation process of the input operation unit from the first input operation means 20 (S37). Then, the main control device 80 automatically shuts off the main power supply by itself, and operates in consideration of safety so that the heating operation is not carelessly performed (S38).
In the first embodiment, it has been explained that the control program is such that the heat retention process is automatically executed by the control device 50 within a certain period of time following the unevenness process. Therefore, the rice cooking unit 1 is used as it is. When left on the induction heating cooker 10, the heat retention step actually continues for, for example, one hour after the unevenness step, during which the reference position determination means 33 is driven (the step S25). (See), at regular time intervals, it is checked whether or not the rice cooking unit 1 is mounted. However, in that case, since the heating coil 14 is not already driven on the induction heating cooker 10 side, only step SB11 shown in FIG. 17 is performed, and the input command operation from the first input operation means 20 is invalidated. The process (S7 in FIG. 12) is canceled.

Next, the operation steps shown in FIG. 16 will be described.
The operation step shown in FIG. 16 is after a “No” determination is made in step S6 shown in FIG. That is, since the reference position determination result is NG (nonconformity), the reference position determination is performed again.

First, in step SA1, the notification means 70 further notifies that the reference position determination result is NG (nonconformity). Specifically, it suggests to the user that the rice cooking unit 1 may not be placed in the correct position or the window 37 may be dirty, and prompts the user to clean or check the window.

Then, in order to complete the subsequent correction operation and recheck operation within a certain time, the measurement of the elapsed time is started (SA2).
Next, the infrared signal is transmitted again from the infrared signal transmission / reception unit 34 of the induction heating cooker 10 (SA3). Then, the reference position is determined based on the state of the response signal from the infrared signal transmission / reception unit 35 (SA4). Here, when it is confirmed that the rice cooking unit 1 exists at the regular position by obtaining the predetermined response signal, the notification means 70 makes a voice such as "confirmed the correct set of the rice cooking unit". Is notified, and the first process of proceeding to step S7 is performed.

Then, if the determination of the reference position in step SA4 does not result in "Yes" within the predetermined time T4 (for example, 5 minutes or 10 minutes), the power transmission coil 17 and the cooling fan 13 are operated as shown in step SA7. It stops, and the notification means 70 gives a voice notification such as "The operation will be stopped because the rice cooking operation cannot proceed", automatically shuts off the main power supply (SA9), and ends the series of operations. That is, if the correction cannot be made within a certain grace period (time T4), the second process of forcibly stopping the operation before the rice cooking operation is performed for safety reasons.

The operation step of FIG. 16 does not include the process (S7) of invalidating the input command operation from the first input operation means 20 as described with reference to FIG. This is because it is a stage (step S6) before such processing.

Next, the operation steps shown in FIG. 17 will be described.
FIG. 17 shows the operation after the determination of “No” is made in step S26 shown in FIG. That is, in the process after the rice cooking operation is started, the reference position determination result is NG (nonconformity), so the reference position determination is performed again.

First, in step SB1, the main control device 80 temporarily stops driving the inverter circuit 73.
Further, the notification means 70 provides an audio guide such as "The rice cooking unit 1 is not correctly mounted, so set it in the correct position" (SB2).

For example, it is determined whether or not 15 minutes have passed from the time when the inverter circuit 73 is started to be driven (SB3). For example, when only 10 minutes have passed since the induction heating was started, the state of the inner pot 3 is the preheating step, so even if the heating is stopped at this point, there is no problem if the rice is cooked again later. Therefore, if 15 minutes have not passed in SB3, the process proceeds to step SB9.

In step SB9, the power transmission coil 17 and the cooling fan 13 are stopped, and the notification means 70 notifies that the rice cooking operation is stopped halfway (SB10).
Then, the process of invalidating the input command operation from the first input operation means 20 (S7 in FIG. 12) is canceled (SB11).

After that, the main control device 80 shuts off the main power supply by itself (SB12), and ends all a series of operations. Since the top plate 22 may be heated to a high temperature by the heating coil 14, the timing of stopping the operation of the cooling fan 13 is delayed by a predetermined time (for example, several minutes) in the step SB9, and the induction heating cooker 10 is used. You may stop after lowering the temperature of.

In step SB3 for determining whether or not 15 minutes have passed since the start of driving the inverter circuit 73, for example, if 15 minutes have passed, the process proceeds to step SB5.

Next, the operation of FIG. 18 will be described.
The operation shown in FIG. 18 is after the determination of "No" is made in step S28 shown in FIG. That is, in the process after starting the rice cooking operation, it corresponds to the case where the rice cooking stop command is issued from the rice cooking unit 1 side for some reason. This is the case where the off / heat retention switch 66 of the second input operation means 12 shown in FIG. 7 is pressed.

First, in step SD1, the main control device 80 temporarily stops driving the inverter circuit 73.
In step SD2, the notification means 70 performs voice guidance such as, for example, "an operation to stop the rice cooking operation in the middle has been performed".

It is determined whether, for example, 15 minutes have passed since the inverter circuit 73 was started to be driven (SD3). For example, if 25 minutes have passed since the start of induction heating, the state of the inner pot 3 is already in the boiling process, so if the heating is stopped at this point, even if the rice is cooled once and then the rice is cooked again. , The original rice cooking result cannot be obtained, and there is a concern that the rice will have a poor taste.

Therefore, at this stage, if the rice cooking is started again immediately, there is no problem, and the rice cooking is urged to resume. Therefore, in SD8, voice guidance such as "Please set the rice cooking unit immediately and press the rice cooking button (rice cooking switch 67) again" is performed by the notification means 70.

When a command to cook rice is issued by pressing the rice cooking button (rice cooking switch 67) within 1 minute from the notification of SD8 (SD9), the operation of the inverter circuit 73 is restarted, and the process proceeds to step S29.

If it is within 15 minutes from the time when the inverter circuit 73 is started to be driven, the process proceeds to step SD5. The notification means 70 performs voice guidance such as "stopping the rice cooking operation in the middle" (SD5), and stops driving the power transmission coil 17 and the cooling fan 13 (SD6). Then, the main power supply is automatically shut off (SD7), and a series of operations is completed.

If a "No" determination is made in step S27 shown in FIG. 14, that is, if an abnormality is detected, the process proceeds to a predetermined abnormality response step SC1. Depending on the content of the abnormality, measures such as immediately stopping the inverter circuit 73 are taken.

Next, the operation steps shown in FIG. 19 will be described.
FIG. 19 shows the operation steps on the rice cooking unit 1 side.
The operation steps of the rice cooking unit 1 are shown by SR1 to SR16.

When the rice cooking unit 1 is correctly set on the induction heating cooker 10, the power receiving coil 7 is started to be driven by the power transmission coil 17. Even if the user does not operate the second input operating means 12 of the rice cooking unit 1, the control device 50 has an abnormality in the internal components of the rice cooking unit 1 by the thermistor 5A and other current sensors (not shown). Start a self-check for any (SR2).

If there is no abnormality, the control device 50 knows that the rice cooking unit 1 is placed in the correct position, but next, the infrared signal from the infrared signal transmission / reception unit 34 of the induction heating cooker 10 is transmitted. It is received by the infrared signal transmission / reception unit 35, and a response signal is transmitted to the infrared signal transmission / reception unit 34 (SR3).

After that, the first display screen 11A of the lid 1B is activated, and the second display screen 11B is not activated (SR4). This is because it is not necessary to activate and display the second display screen 11B because the weight measurement stage of rice is not yet performed, and it also saves energy.

In step SR4, the notification means 90 provides, for example, an audio guide saying "I will start cooking rice."
The control device 50 reads out the latest rice cooking conditions used in the previous rice cooking from the storage means 50R. For example, read out the conditions that the amount of cooked rice is 3 go and the cooking method is "soft" with white rice (SR5).

Next, the read rice cooking conditions are displayed on the first display screen 11A. For example, to display "white rice" and change it, the switch 63 may be pressed. If you press it once, the selection frame will advance to the next candidate, such as "washless rice", if you press it twice, "germinated brown rice", and it will go around to the original "white rice", so you can use the desired rice type as the desired condition for cooking rice. Can be selected (SR6).

Similarly, information on the brand of rice and the degree of cooking of rice, that is, the hardness of rice, can be sequentially read out and corrected (SR7, SR8).
At this stage, the control device 50 activates the second display screen 11B to indicate that the weight of the rice can be measured. Further, the voice notification means 90V is also used for notification (SR9).

Next, the process proceeds to the rice weight measurement process and the notification process. The method of measuring the weight of rice and the appropriateness of the amount of water to be charged into the inner pot 3 are guided by the second display screen 11B and the voice notification means 90V according to the measurement result (SR9). This step will be described in detail later.

Finally, when the amount, type, brand, amount of water, etc. of rice were adjusted, the rice cooking switch 67 was pressed, and the voice notification means 90V, for example, "The weight measurement result of rice was 300 g. Appropriate water amount determination. I've done it, so I'll start cooking rice. " Further, the second display screen 11B ends (turns off) the display operation (SR10).

Next, the final rice cooking conditions such as "How to cook with white rice ..., the estimated time to cook is 18:50" are performed by audio guide (SR11).

When about 10 seconds have passed since the rice cooking switch 67 was pressed, the control device 50 estimates that there is no canceling operation by the user, and transmits a predetermined "rice cooking command signal" to the induction heating cooker 10. The command signal in this case is transmitted from the infrared signal transmission / reception unit 35 to the infrared signal transmission / reception unit 34 side (SR12).
The "rice cooking command signal" here is not a control program that determines the details of the rice cooking process. If you send basic data indicating the amount, type, brand, etc. of rice, induction heating for rice cooking is performed using the computer software (rice cooking control program) stored in the storage means 80R of the main control device 80 based on the basic data. The energization control of the coil 14 can be executed. However, the control program itself that determines the details of the rice cooking process may be directly transmitted.

Next, it is determined whether or not the preheating process is completed (SR13), and if it is determined that the preheating process is completed, the process proceeds to the next step (SR14), and the infrared signal transmission / reception unit 35 indicates that the preheating process is completed. The signal is transmitted in infrared (SR14).

Next, it is determined whether or not the rice cooking process is completed (SR15), and if it is determined that the rice cooking process is completed, the process proceeds to the next step (SR16), and the infrared signal transmitter / receiver 35 indicates that the rice cooking process is completed. The signal is transmitted in infrared (SR16).

As shown in FIG. 20, next, it is determined whether or not the unevenness process is completed (SR17), and if it is determined that the unevenness process is completed, the process proceeds to the next step (SR18), and the infrared signal transmission / reception unit 35 A signal indicating that the unevenness process is completed is transmitted by infrared rays.

Then, the notification means 90 on the rice cooking unit 1 side also displays the end of rice cooking (end of unevenness) on the first display screen, and the notification means 90 also notifies by voice that the rice has been cooked and the unevenness process has been completed. (SR19). The above steps complete a series of rice cooking operations.

Next, the operation step of FIG. 21 will be described.
FIG. 21 is for explaining in detail between steps SR9 to SR10 in FIG.

The step SR9 includes steps SR9A to SR9M shown in FIG.
In the first step SR9A, the voice notification means 90V notifies that the mode is automatically switched to the voice input mode. This audio guide includes an explanation that only rice is put in the inner pot 3 and that the lid 1B is left open to measure the weight. Then, it automatically switches to the voice input mode (SR9B).

Next, the notification means 90 performs a voice guide asking whether or not a mode for measuring the weight is desired (SR9C). Depending on the user who is proficient in cooking rice, the amount of water may be adjusted to an appropriate level by experience, and if you do not want to measure with the rice cooking unit 1, a predetermined word such as "do not measure" by voice. Speaking of, voice is input through a microphone provided at an appropriate place on the lid 1B, and the process proceeds to the normal step SR10 at once. At the same time, the voice input mode is automatically canceled.

In step SR9C, when the user utters that he / she desires the weight measurement mode, the control device 50 determines whether or not the lid 1B is open (SR9D). This determination is performed by the control device 50 determining the output from the lid opening sensor 93. If the lid 1B is not opened, it may be guided by voice so that it is opened by the voice notification means 90V.

In the next step SR9E, when the user utters "measurement start", the control device 50 calculates the weight of the entire rice cooking unit 1 from the measured values of the four weight sensors 4 by the weight measuring means 94 (SR9F). ).

Then, the measurement result is notified by voice (SR9G). Then, the amount of water corresponding to the weight is calculated, and the result is notified by the voice notification means 90V (SR9H). Upon hearing this notification, when the user injects water into the inner pot 3 of the rice cooking unit 1 with the lid 1B open, the weight measuring means 94 determines the proper weight and the current weight in the process of injecting water. Calculate the divergence and notify by voice (SR9K).

When the control device 50 determines that the water level has finally reached the appropriate level through the process of injecting water or taking out excess water (SR9L), a voice notification is given that the voice input mode is automatically canceled. The means 90V and the second display screen 11B are used for notification, and the process proceeds to step SR10 described above. That is, when the amount, type, brand, amount of water, etc. of rice are finally adjusted, the voice notification means 90V and the second display screen 11B notify that the appropriate amount of water has been measured (SR10).

In the next step SR11, it is recommended to press the rice cooking switch 67 by voice, and with the voice notification means 90V, for example, "rice is cooked with white rice, how to cook ... Perform voice guidance such as "It's a minute" (SR11).

In the first embodiment, since the voice input mode is automatically set at the stage of weighing the rice and injecting water, the user can concentrate on the operation of pouring water, and the lid 1B can be opened and closed. Therefore, the operation of checking the first display screen 11A can be avoided, and the effect of improving the convenience of the user can be expected.

Summary of Embodiment 1.
As is clear from the above description, in the first embodiment, the electric rice cooker 100 of the first invention has been realized by the following configuration.
That is, the electric rice cooker 100 in the first embodiment is
An induction heating cooker 10 having a heating coil 14 and a first input operating means 20 located on the front side of the heating coil 14 and inputting heating conditions.
A rice cooking unit 1 including an inner pot 3 that houses the rice to be cooked and is heated by the heating coil 14 and a second input operating means 12 for inputting rice cooking conditions is provided.
The rice cooking unit 1 covers the upper part of the first input operating means 20 with the rice cooking unit 1 placed at a predetermined position of the induction heating cooker 10.
Inside the induction heating cooker 10, a cooling fan 13 that supplies cooling air for cooling the heating coil 14 and between the induction heating cooker 10 and the rice cooking unit 1 are used for cooking rice. An infrared communication unit 34 for transmitting an infrared signal including control information and a transmission coil 17 for supplying power to the power receiving coil 7 provided in the rice cooking unit 1 in a non-contact manner are provided, respectively, and cooling from the cooling fan 13 is provided. In the second air passage SH2, which is partitioned separately from the first air passage SH1 to which the wind is introduced and reaches the heating coil 14, the infrared communication unit 34 is provided on the upstream side of the cooling air flow and is provided on the downstream side. The transmission coil 17 is arranged in the air.

According to the electric rice cooker having this configuration, it is possible to prevent overheating of the infrared communication unit 34 and the power transmission coil 17 arranged inside the induction heating cooker 10.

Further, in the first embodiment, the electric rice cooker 100 according to the second invention is realized by the following configuration.
That is, the electric rice cooker 100 of the first embodiment is
An induction heating cooker 10 including a heating coil 14 and a first input operating means 20 located on the front side of the heating coil 14 for inputting heating conditions.
A rice cooking unit 1 including an inner pot 3 that houses the rice to be cooked and is heated by the heating coil 14 and a second input operating means 12 for inputting rice cooking conditions is provided.
The induction heating cooker 10 includes an infrared communication unit 34 for exchanging information necessary for controlling rice cooking between the cooling fan 13 that supplies cooling air to the heating coil 14 and the rice cooking unit 1. A transmission coil 17 that supplies electric power to the rice cooking unit 1 in a non-contact manner is provided.
A partition wall (magnetic shield plate) 19 for partitioning the internal space of the induction heating cooker 10 is provided, and an air passage (first air passage) for guiding the cooling air from the cooling fan 13 to the heating coil 14 at the partition wall 19 is provided. In addition to partitioning SH1)
The infrared communication unit 34 is arranged on the opposite side of the heating coil with the partition wall (magnetic shield plate) 19 interposed therebetween.

According to the electric rice cooker of the second invention, it is possible to prevent overheating of the infrared communication unit arranged in the induction heating cooker.

Further, in the first embodiment, the cooking system according to the fourth invention was realized by the following configuration.
That is, the cooking system of the first embodiment is
An induction heating cooker 10 having a top plate 22 on the upper surface, a rice cooking unit 1 having an inner pot 3 built in and used by being placed close to or in contact with the top plate 22 of the induction heating cooker 10. With
The induction heating cooker 10 has a heating coil 14 that induces and heats the inner pot 3, and a first input operation that is located on the front side of the heating coil 14 in order to set energization conditions for the heating coil 14. With means 20
The rice cooking unit 1 includes a second input operating means 12 for setting rice cooking conditions.
With the rice cooking unit 1 placed at a predetermined position of the induction heating cooker 10, the rice cooking unit 1 covers the upper part of the first input operating means 20.
The induction heating cooker 10 includes an infrared communication unit 34 for exchanging information necessary for controlling rice cooking between the cooling fan 13 that supplies cooling air to the heating coil 14 and the rice cooking unit 1. A transmission coil 17 that supplies power to the rice cooking unit 1 in a non-contact manner, and an air passage (second air passage SH2) to which cooling air is supplied from the cooling fan 13 to cool the infrared communication unit 34. Provide each
Before starting the rice cooking process by the rice cooking unit 1, the induction heating cooker 10 confirms the placement of the rice cooking unit 1 by the infrared communication unit 34, and then the second input operation means 12 The configuration is characterized by including a main control device 80 that allows an input operation.

According to this cooking system, overheating of the infrared communication unit of the induction heating cooker can be prevented by the cooling air of the cooling fan, and the infrared signal is used before starting the rice cooking process by the rice cooking unit. After confirming the placement of the rice cooking unit, the input operation of the input operation means of the rice cooking unit is permitted, so when the predetermined rice cooking unit is placed in the proper position, rice cooking is permitted to improve the safety. Can be done.

Further, the electric rice cooker 100 according to the first embodiment has the following characteristic configurations.
That is, the electric rice cooker 100 of the first embodiment is
A rice cooking unit 1 in which an induction heating cooker 10 having a top plate 22 on the upper surface and an inner pot 3 placed close to or in contact with the top plate 22 of the induction heating cooker 10 and built in are induced and heated. And with
The induction heating cooker 10 has a heating coil 14 that induces and heats the inner pot 3, and a first input operation that is located on the front side of the heating coil 14 in order to set energization conditions for the heating coil 14. With means 20
The rice cooking unit 1 includes a second input operating means 12 for setting rice cooking conditions.
With the rice cooking unit 1 placed on the induction heating cooker 10, the rice cooking unit 1 covers the upper part of the first input operating means 20.
Before starting the rice cooking process by the rice cooking unit 1, the induction heating cooker 10 confirms the placement of the rice cooking unit 1 by the infrared signal, and then performs the input operation of the first input operation means 20. It is provided with a main control device 80 to be invalidated.

According to the electric rice cooker 100 having this configuration, before starting the rice cooking process by the rice cooking unit 1, the placement of the rice cooking unit 1 is confirmed by the infrared signal, and then the first input of the induction heating cooker 10 is confirmed. Since the input operation of the operation means 20 is invalidated, when the predetermined rice cooking unit 1 is used, it is possible to prevent the first input operation means 20 from inadvertently performing the input operation.

Further, the electric rice cooker 100 according to the first embodiment has the following characteristic configurations.
That is, the electric rice cooker 100 of the first embodiment is
A rice cooking unit 1 in which an induction heating cooker 10 having a top plate 22 on the upper surface and an inner pot 3 placed close to or in contact with the top plate 22 of the induction heating cooker 10 and built in are induced and heated. And with
The induction heating cooker 10 has a heating coil 14 that induces and heats the inner pot 3, and a first input operation that is located on the front side of the heating coil 14 in order to set energization conditions for the heating coil 14. With means 20
The rice cooking unit 1 includes a second input operating means 12 for setting rice cooking conditions.
With the rice cooking unit 1 placed on the induction heating cooker 10, the rice cooking unit 1 covers the upper part of the first input operating means 20.
Between the first input operating means 20 and the heating coil 14, a gap S leading to the outside is formed between the upper surface of the induction heating cooker 10 and the lower surface of the rice cooking unit 1.
A rice cooking step is performed between the rice cooking unit 1 and the induction heating cooker 10 at a portion facing the bottom surface of the rice cooking unit 1 and the top plate 22 of the induction heating cooker 10 behind the gap S. A window 37 for passing an infrared signal is formed before the start and after the start of the rice cooking process.
Before starting the rice cooking process by the rice cooking unit 1, the induction heating cooker 10 confirms the placement of the rice cooking unit 1 by the infrared signal, and then performs the input operation of the first input operation means 20. It has a main controller 80 to disable
Further, when the main control device 80 of the induction heating cooker 10 detects that the rice cooking unit 1 has completed a predetermined rice cooking process by the infrared signal, the input operation is invalid in the first input operation means 20. It releases the state that has been converted.

According to the electric rice cooker 100 having this configuration, overheating of the first input operating means 20 arranged in the front portion of the upper surface of the induction heating cooker 10 can be prevented by the gap S, and the rice cooking unit can be prevented. Before starting the rice cooking process according to 1, the placement of the rice cooking unit 1 is confirmed by the infrared signal, and then the input operation of the first input operation means 20 of the induction heating cooker 10 is invalidated. When the rice cooking unit 1 is used, it is possible to prevent the first input operating means 20 from inadvertently performing an input operation during the rice cooking operation. Further, when the rice cooking process is completed, the invalid state of the input operation is automatically released, and the use of the induction heating cooker 10 alone is not hindered.

Further, the electric rice cooker 100 according to the first embodiment has the following characteristic configurations.
That is, the electric rice cooker 100 of the first embodiment is
An induction heating cooker 10 having a top plate 22 on the upper surface, a rice cooking unit 1 having an inner pot 3 built in and used by being placed close to or in contact with the top plate 22 of the induction heating cooker 10. With
The induction heating cooker 10 has a heating coil 14 that induces and heats the inner pot 3, and a first input operation that is located on the front side of the heating coil 14 in order to set energization conditions for the heating coil 14. With means 20
The rice cooking unit 1 includes a second input operating means 12 for setting rice cooking conditions.
The rice cooking unit 1 covers the upper part of the first input operating means 20 with the rice cooking unit 1 placed at a predetermined position of the induction heating cooker 10.
A gap S leading to the outside is formed between the upper surface of the first input operating means 20 and the lower surface of the rice cooking unit 1.
Rice cooking is controlled between the rice cooking unit 1 and the induction heating cooker 10 at a portion facing the bottom surface of the rice cooking unit 1 and the top plate 22 of the induction heating cooker 10 behind the gap S. A window 37 for passing an infrared signal for transmitting information is formed.
When the induction heating cooker 10 or the rice cooking unit 1 is at least one of the rice cooking process by the rice cooking unit 1 and the reserved rice cooking period, the placement of the rice cooking unit 1 is confirmed by the infrared signal, and the rice cooking unit 1 is predetermined. When it is determined that the rice cooking unit 1 is not present at the reference position of, the process of deciding whether to continue or stop the rice cooking operation is performed according to the progress of the rice cooking process, and at the stage of continuing or stopping the rice cooking operation. , The configuration is characterized in that it is notified in advance (SA8 in FIG. 16, SB2 and SB10 in FIG. 17, SD5 and SD8 in FIG. 17, etc.).

According to the electric rice cooker having this configuration, it is possible to prevent overheating of the first input operating means 20 arranged in the front portion of the upper surface thereof.
Further, before or after starting the rice cooking process by the rice cooking unit 1, the placement of the rice cooking unit 1 is confirmed by the infrared signal, and the degree of progress of the rice cooking process, that is, the elapsed time from the start of rice cooking and the temperature of the inner pot 3 Depending on the information, the process of deciding whether to continue or stop the rice cooking operation is performed, and at the stage of continuing or stopping the rice cooking operation, the user is notified in advance, so that misunderstandings and erroneous operations in use by the user can be detected. It has the advantage of being preventable.

The control program of the main control device 80 or the control device 50 may be changed so that the progress of the rice cooking process is determined by taking into account not only the elapsed time from the start of rice cooking but also the temperature information of the inner pot 3. ..

Embodiment 2.
22 to 24 relate to the second embodiment of the present invention. FIG. 22 is a vertical cross-sectional view of the electric rice cooker as viewed from the side. FIG. 23 is an enlarged vertical sectional view of the front of the electric rice cooker of FIG. 22. FIG. 24 is a block diagram showing a control-related configuration of the electric rice cooker of FIG. 22. The same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and duplicate description is omitted.

The major difference between the electric rice cooker of the second embodiment and the electric rice cooker 100 of the first embodiment is that the weight sensor 4 is located on the induction heating cooker 10 side.

The electric rice cooker 100 according to the second embodiment will be described in detail below.
In FIG. 22, reference numeral 103 denotes an IC tag installed in place of the permanent magnet 30 of the first embodiment. Although not shown in FIG. 22, the reader (IC tag information reading unit) 104 that reads the tag information corresponds to the mounting detection sensor (reed switch) 31 of the first embodiment.

In FIG. 22, reference numeral 105 denotes support legs attached to the four corners of the bottom surface of the induction heating cooker 10, and inside the support legs, a weight sensor 4 corresponding to the weight sensor 4 of the first embodiment (not shown). ) Is placed.

Next, in FIG. 23, 22A is an inclined portion formed around (front-back, left-right) the top plate 22 constituting the upper surface of the induction heating cooker 10. That is, the inside of the inclined portion is about 10 mm higher than the upper surface of the outermost peripheral edge portion.

In FIG. 23, 106 is a protrusion integrally formed on the lower surface of the bottom plate 39 of the rice cooking unit 1. As is clear from FIG. 23, the protrusion is formed in a square or rectangular shape on the lower surface of the bottom plate 39 in a plan view so as to surround the inclined portion 22A.

As shown in FIG. 23, the protrusion 106 is fitted to the outside of the inclined portion 22A. The inclined portion 22A and the protruding portion 106 do not have to be in close contact with each other, and a gap of about several mm may be maintained. By fitting the inclined portion 22A and the protruding portion 106, a stopper function is exhibited so that the rice cooking unit 1 does not carelessly move back and forth and left and right on the induction heating cooker 10.

The protruding height of the protruding portion 106 may be flush with the lower end surface of the peripheral edge portion, and it is not necessary to project the protruding portion 106 significantly downward. If it is greatly projected, the stability of the rice cooking unit 1 will deteriorate when it is placed on a table or the like.

Reference numeral 130 denotes a (second) cooling fan, which is installed inside the rice cooking unit 1 in order to prevent hot air from staying in or around the bottom of the inner pot 3. Reference numeral 107 denotes a ventilation hole constituting the intake air passage of the cooling fan 130, which is a circular hole having a diameter of about several mm or a thin slit shape so that a finger cannot be inserted. The thick arrow indicates the flow of cooling air sucked into the cooling fan 130.

Next, FIG. 24 will be described. Reference numeral 194 is a weight measuring means for measuring the weight of rice, and includes the weight sensor 4 (not shown). Note that this weight measuring means does not measure only the rice cooking unit 1 as in the first embodiment, but measures the weight of the induction heating cooker 10 with the rice cooking unit 1 mounted.

Since the basic operation of the second embodiment is the same as that of the first embodiment, the same effect as that of the first embodiment can be expected.

Embodiment 3.
25 to 27 relate to the third embodiment of the present invention. FIG. 25 is a vertical cross-sectional view of the lower front part of the electric rice cooker. FIG. 26 is a vertical cross-sectional view of an operation input unit at the front portion of the electric rice cooker shown in FIG. 25. FIG. 27 is a vertical cross-sectional view of the lower left side surface of the electric rice cooker shown in FIG. 25. The same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and duplicate description is omitted.

The electric rice cooker 100 according to the third embodiment particularly suppresses the temperature rise of the first input operating means 20 located in the front portion of the induction heating cooker 10, and also suppresses the temperature rise of the left and right side surface portions of the rice cooking unit 1. It is provided with a configuration intended to suppress and provide a highly safe rice cooker.

As shown in FIG. 25, the bottom plate 39 of the rice cooking unit 1 has a shape close to a rectangle or a square in a plan view, and plastic or rubber legs 2 are fixed to the lower surfaces of the four peripheral corners thereof. Has been done. Since the leg portion 2 serving as the support leg has a shape in which the upper portion is thick and becomes thinner toward the lower portion, the periphery thereof is an inclined surface 2S.

CL is a center line extending in the vertical direction and indicates the center of the leg portion 2. As can be seen from FIG. 25, the positions of the front surface of the rice cooking unit 1 and the front wall surface 10F of the outer shell of the induction heating cooker 10 are substantially flush with each other. The legs 2 are arranged at a predetermined distance from the front wall surfaces 1F and 10F.

The inclined surface 2S of the leg portion 2 hits the inclined portion 22A where the top plate 22 rises upward from the middle, and the leg portion 2 has a structure in which it is difficult to move behind the inclined portion 22A. That is, the leg portion 2 and the inclined portion 22A serve as stoppers so that the rice cooking unit 1 does not easily move backward.
Because of this structure, in order to bring the rice cooking unit 1 closest to the rear vertical portion 16 (reference position), the leg portion 2 is rearward until it hits the inclined portion 22A as shown in FIG. Just move it.

Since the position of the leg 2 is within the width 20 W in the front-rear direction of the first input operating means 20 as shown in FIG. 25, the two legs 2 on the front side of the rice cooking unit 1 are the second. It is provided apart in the left-right direction so as to avoid the position of the input operation means 20 of 1. As a result, the situation in which the leg portion 2 pushes the first input operating means 20 from above does not occur. This is also clear from FIG. 26 below.

FIG. 26 will be described.
The window 37 that transmits an infrared signal is covered with a glass plate or the like that transmits an infrared signal in a hermetically sealed state. One of the features of the third embodiment is that the window 37 is formed on the inclined portion 22A of the top plate 22.

The infrared signal is not vertical as shown by the broken line IR in FIG. 26, but is inclined forward. Further, HZ indicates the maximum outer peripheral range in which the rice cooking unit 1 and other metal pots and the like are placed and induced to be heated. This range is determined by the maximum outer diameter of the heating coil 14.
When cooking on a top plate 22 with cooking utensils such as a general pot or frying pan, the window 37 may be covered with overflowing cooking liquid, cooking ingredients, etc., and if left untreated, it will solidify and become dirty. There is a concern that it will stick.

Therefore, in the third embodiment, the important window 37 is arranged on the inclined portion 22A of the top plate 22 so as not to be easily soiled. Further, when the first input operating means 20 is operated from the front, the window 37 is easily visible from the front side, so that there is an advantage that the user can easily notice the dirt even if it is dirty.

Next, FIG. 27 will be described.
FIG. 27 is a vertical cross-sectional view of the lower left side surface of the electric rice cooker shown in FIG. 25. Although not shown, the shape of the lower part of the right side surface is symmetrical with that of FIG. 27.
As can be seen from FIG. 27, the top plate 22 is raised further except for a part of the left and right ends (width WL) so that induction heating can be performed as close as possible to the bottom plate 39 of the rice cooking unit 1. .. In other words, stepped portions 22L and 22R (not shown) that rise substantially vertically are integrally formed at the left and right end portions.

In FIG. 27, 1P is a protrusion (also referred to as “rib”) integrally molded inside the lower part of the plastic case constituting the outer shell of the rice cooking unit 1. The protrusions 1P are formed at regular intervals (for example, 30 to 50 mm) inside the lower part of the case of the rice cooking unit 1. The tip of the protrusion 1P is in contact with or close to the step 22L as shown in FIG. 27. Therefore, since the rice cooking unit 1 correctly placed on the induction heating cooker 10 has the protrusion 1P, careless movement in the left-right direction is prevented.

Therefore, as shown in FIG. 27, a gap S having a predetermined width dimension WL is formed at least in the lower left and right sides of the case of the rice cooking unit 1. Moreover, since the gap communicates with the outside through the gap of the facing interval G1, hot air is prevented from being trapped in the gap S, and the temperature rise of the case of the rice cooking unit 1 can be suppressed. Even if the user touches the lower part of the left side surface of the rice cooking unit 1 during the rice cooking operation, the user does not touch the step portion 22L of the top plate 22.

As shown in FIG. 27, in the third embodiment, the top plate 22 is formed of a portion that approaches or comes into contact with the bottom plate 39 of the rice cooking unit 1 and the left and right peripheral portions that are formed of separate members. The 22T is made of a plastic material having low thermal conductivity, so that the temperature rise of the peripheral portion 22T (on the left side and the right side) can be particularly suppressed. The front and rear peripheral portions may also be formed of different members in the same manner.
In the top plate 22, it is necessary to select a material having high heat resistance and easily transmitting the magnetic field lines from the heating coil 14 at the portion of the top plate 22 that approaches or contacts the bottom plate 39 of the rice cooking unit 1. On the other hand, if the left and right peripheral portions are formed of separate members, it is not necessary to use such a highly heat-resistant material, which is advantageous in terms of cost.

Since the basic operation of the third embodiment is the same as that of the first embodiment, the same effect as that of the first embodiment can be expected.
Further, in the third embodiment, the temperature rise of the outer case of the rice cooking unit 1 can be suppressed, and the effect of improving the installation stability of the rice cooking unit 1 can be expected.

Embodiment 4.
28 to 33 relate to the fourth embodiment of the present invention. FIG. 28 is an explanatory diagram showing an overall image of one house (home). FIG. 29 is a vertical cross-sectional view of the electric rice cooker shown in FIG. 28. FIG. 30 is a plan view of the lid of the electric rice cooker shown in FIG. 28. FIG. 31 is an explanatory diagram showing the cooperative relationship between the induction heating cooker and the electric power command device in the home shown in FIG. 28 in chronological order. FIG. 32 is a flowchart showing the steps of the reserved rice cooking operation of the electric rice cooker. FIG. 33 is a flowchart showing the monitoring and notification operation of the induction heating cooker. The same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

The electric rice cooker 100 according to the fourth embodiment has a configuration for further improving the convenience of the user by the communication function provided in the induction heating cooker 10.

Further, the internal structure of the induction heating cooker 10 is improved to improve the cooling efficiency of the heating coil.
Hereinafter, the fourth embodiment will be described with reference to FIGS. 28 to 33.

In the fourth embodiment, the "home appliance" EE means an electric device designed mainly for home use, and is an image of a home appliance in a kitchen such as an electric rice cooker 100 and a television. It includes, but is not limited to, video equipment such as machines, air conditioners, electric vacuum machines, electric washing machines (including those with a drying function), and hot water supply equipment used for baths. In the following description, the term home appliance EE includes the electric rice cooker 100 unless otherwise specified.

In the fourth embodiment, the "identification information" of the home electric appliance EE is information for identifying the home electric appliance EE, which is unique to the home electric appliance EE, and is necessary for accurate repair and inspection. This is important information. For example, specifically, the following items are included in the identification information, but the identification information is not limited to the following items. The home appliance EE will be described in detail later.
(1) Manufacturer name of home appliances (2) Model name (3) Model number (4) Rated power consumption (5) Date of purchase (In many cases, it is the starting date of the quality assurance period of the manufacturer or distributor. )
(6) Date of start of use (For dishwashers, it is the starting date of the legal inspection period)
(7) Quality guarantee number

The "integrated management device" 200 referred to in the fourth embodiment means a device for operating two or more home electric appliances EE in cooperation with each other. For example, it refers to a device for linking an electric rice cooker 100, which is the subject of the present invention, with another home electric appliance EE, for example, an air conditioner or a ventilation device. "Cooperation" means that the information indicating the operating state of one side and the acquired data are used by the other home electric appliance for driving, display, and the like. Therefore, the integrated management device 200 has a function of acquiring information on the current status such as operation, stop, and standby state of the home electric appliance EE from the home electric appliance EE by a wired or wireless signal.

The "power command device" referred to in the fourth embodiment is one of the "integrated management devices" 200 having a power consumption limiting function and a function of regulating the upper limit of the total power consumption in one household. To say. In one home electric appliance, the "integrated management device" may also serve as the "power command device". Further, the "electric power command device" of one home electric appliance is not necessarily the electric power command device of other home electric appliances. In the following description, the reference code 200 is used for both the power command device and the integrated management device.

The “resident” referred to in the fourth embodiment means a person who lives in one house described later, and includes parents and children, siblings, sisters, etc. who are related to each other, but is temporarily in the living space HA described later for a predetermined period of time. Includes visitors who stay in the area and others who live with them. It also includes those who rent one or more living spaces by one or several people. When the electric rice cooker 100 or other home electric appliance EE is used, the resident is referred to as a "user".

In the fourth embodiment, the "home" means one house managed by a specific manager, and may include an apartment house having a plurality of rooms and a plurality of families occupying the house. .. That is, even in such an apartment house, when the upper limit of commercial power is centrally managed by one power cutoff device (one breaker BK, a plurality of power breakers, etc.) as in the case of one house. , Considered as a home here.

In the fourth embodiment, the "operation information" of the integrated management device (also referred to as "power command device") 200 described later is information indicating the upper limit total electric energy set in one household, and is currently used. Information indicating the amount of power used, information indicating the difference between the total amount of power used and the amount of power used, information such as a name that specifically specifies the home appliance EE controlled by the power command device 200, the home appliance. Information indicating the usage status of the device EE, information on the amount of electric energy used in each home electric energy device EE (for example, the average amount of electric energy per minute), and the like are not limited thereto.

In the fourth embodiment, the "power limit information on the home appliance side" refers to information on some signal related to the power consumption received by the home appliance from the power command device 200, and is described later in the power reduction request signal AS1 and power reduction. Command signal A signal that includes information related to a command such as AS2. The information includes information indicating the reception time (year / month and time in seconds) of the signal and the meaning of the signal. For example, regarding the power reduction command signal AS2 at a certain point in time for the electric rice cooker 100, which will be described later, information such as "Reception time: 17:00 on May 1, 2017, the instantaneous maximum power consumption is reduced by 2%". The power limit information on the home appliance side is stored in time series in the storage means 80R of the main control device 80 that controls the whole of the home appliance, for example, the electric rice cooker 100, and the main power supply is cut off. Even if it doesn't disappear. The main power is turned on and off as one cooking, and at least 10 times are stored in memory. The excess is automatically deleted in sequence.

In the fourth embodiment, the "position information on the home appliance side" is information (code) indicating in which room in the living space HA the home appliance exists, for example, the living room is code 001. , The kitchen is coded 002, the living room is 003, and so on, which are ruled in advance by the central control unit of the power command device 200, and when the home appliance EE is used to be the (power) control target of the power command device 200. The location information is registered in the power command device 200 together with the identification information of the home electric appliance. Even if the home appliance EE is not the target of (electric power) control of the power command device 200, the latest position information indicating the installation position and the place of use may be transmitted.

Home appliances that do not change their initial installation position (non-portable), such as built-in induction heaters that are installed in kitchen furniture in kitchens and air conditioners that are fixed to walls. In the case of the device EE, the location information can be used permanently as it is.

In the description of the fourth embodiment, detailed description of the means for grasping the latest position of the electric rice cooker 100 and other individual portable home appliances will be omitted.

(overall structure)
FIG. 28 shows an example of one house using the electric rice cooker 100 of the fourth embodiment. In FIG. 28, HA1 shows a living space (kitchen) of one house. Although other living spaces are not shown in FIG. 28, there may be other rooms such as a "living room" and a "bathroom".

All living space HAs are supplied with electric power having a voltage of, for example, 200 V from a commercial power source 71 of an electric power company outside the house. The electric power is drawn into the house through the watt hour meter 110. Reference numeral 111 denotes a power supply line (main trunk line) connected to the commercial power supply 71 having a voltage of 200 V via a breaker BK. Various home appliances EE are connected to the power supply line 111. Home appliances other than the electric rice cooker 100 are not shown.

Reference numeral 200 denotes a power command device (also serving as an integrated management device) to which power is supplied via a breaker BK, and is hung on a wall in a place easily accessible by a family, such as a wall surface of a living space HA (kitchen). It is installed in a state or placed on the floor.

In FIG. 28, the AD is a power strip. In the fourth embodiment, each home appliance EE of the living space HA transmits an identification code such as position information and room information indicating the installed living space HA to the power command device 200. This power strip may be omitted.

In FIG. 28, 112 is a router connected to the power command device 200, and this router is an external organization such as a local electric power company, a public organization, or an information providing organization that transmits a power reduction command signal, power tightness information, or the like. It is connected to 113 via a wide area communication network (also referred to as "communication network" or "Internet") 114 such as the Internet.

Reference numeral 115 denotes an information communication terminal device. The "information and communication terminal device" 115 referred to in the fourth embodiment is a terminal device that a user can easily carry around to make a call or communicate data (including e-mail information) indoors, outdoors, or on the go. Is. Devices that cannot make phone calls but can download information, send e-mails, and send remote control signals over the Internet are called "portable communication devices." A small, portable personal computer is also a type of information and communication terminal device.

The information communication terminal device 115 according to the fourth embodiment has a function of bringing the input / output unit of each home electric appliance EE close to (or may come into contact with) several centimeters and transmitting / receiving signals by short-range communication. There is. The short-range communication is an international standard technology for wireless communication known as Near Field Communication (abbreviation: NFC).

In this NFC communication, a so-called wireless tag (NFC tag) is embedded in the home appliance EE side. The NFC tag is connected to a communication control IC for NFC (hereinafter referred to as "NFC control circuit") and this control circuit, and when a radio wave of a predetermined frequency is received from the outside, the power for the control circuit is generated. It is composed of an antenna to be generated and a microchip memory (hereinafter, referred to as “NFC storage unit”) connected to the NFC control circuit.

On the other hand, on the information communication terminal device 115 side, data is read from the NFC storage unit (not shown) of the electric rice cooker 100 (not shown), which is one of the home appliance devices EE, via the NFC tag (status). (Acquisition of information), and conversely, control data (control command) is sent from the information communication terminal device 115 side to the NFC storage unit (not shown) of the rice cooker unit 1, and the control device 50 sends the control device 50 to the NFC storage unit. The control operation can be performed according to the control command stored in (the NFC tag of this type may be referred to as an "active tag"). Home appliances EE other than the electric rice cooker 100 have the same configuration. That is, the NFC of the fourth embodiment has a function of reading information in the internal storage device of the home electric appliance EE on the information communication terminal device 115 side (the NFC tag having such a function may be called a "simple tag". Not only (there is), but also the operation on the home appliance EE side has a function that can be activated by a control command from the information communication terminal device 115. In other words, the information communication terminal device 115 has not only a function of reading various information from the home electric appliance device EE but also a function of writing to the NFC storage unit, and has two functions of a reader and a writer.
It is said that the advantage of NFC is that the format of data that can be exchanged by communication is not generally limited, and that not only text data but also moving images and XML data can be exchanged.

Although not shown, the base station of the information communication terminal device 115 is connected to the communication network 114 via a relay server, and the information communication terminal device 115 accesses the router 112 via the base station. Can be done. That is, if the information communication terminal device 115 owned by the resident of this household is connected to the communication network 114 from a remote location, it can be connected to the power command device 200.

Further, it can be connected to the wireless communication unit 26 (see FIG. 2) of the electric rice cooker 100 via the power command device 200, and can be remotely controlled from a place away from the living space HA. However, in the fourth embodiment, the information and communication terminal device 115 cannot directly control the electric rice cooker 100 and other home electric appliances EE. This is because some home appliances EE, such as electric cookers, emit radiant heat directly into the room, so it is not possible to remotely control them from outside the house via a communication circuit used by many people. In consideration of safety, it is not adopted, but instead, all operations are performed via the power command device 200.

Inside the house, it may be possible to connect to the electric rice cooker 100 via a router 112, a home server (not shown), or a local network facility (not shown).

Next, FIG. 29 will be described. FIG. 29 is a vertical cross-sectional view of the entire electric rice cooker 100 when viewed from the side as in FIG. 2 of the first embodiment. Cross-section display (hatching) is omitted for some configurations.

The induction heating cooker 10 has a cooling fan 13, a heating coil 14 wound in a thin disk shape (doughnut shape), a power transmission coil 17, a magnetic shield plate 19 circular in plan view, and a control device 50 in the internal space thereof. And an outside air temperature detecting means 15 for detecting the temperature of indoor air such as a kitchen.

The magnetic shield plate 19 has a height that horizontally partitions the internal space of the induction heating cooker 10, and is formed by the magnetic shield plate 19 and a large flat area plastic partition plate 96 installed horizontally. , The circular room 97 is divided in a plan view. This room functions as the first air passage SH1 described in the first embodiment.

The room 97 houses the heating coil 14. The cooling fan 13 is located immediately behind the room 97, and is installed vertically so that the air outlet is in the front and the intake port is in the rear BU.

Reference numeral 98 denotes a vent, which is formed at the rear portion of the magnetic shield plate 19 constituting the room 97.
The cooling air blown from the cooling fan 13 proceeds from the ventilation port 98 through the room 97, and passes through an exhaust port (not shown) provided on the left side of the induction heating cooker 10. It is released to the outside.

Reference numeral 99 denotes a wind direction plate arranged on the upstream side of the cooling air flow when viewed from the cooling fan 13.
What is indicated by a thick arrow in FIG. 29 is the flow of cooling air generated in the internal space of the induction heating cooker 10 by the cooling fan 13.

As is clear from FIG. 29, in the fourth embodiment, fresh air in the living space HA is sucked from the intake hole on the back side of the main control device 80, and the cooling air flows around the main control device 80. It is cooled and then pumped into the room 97. Therefore, the heating coil 14 is effectively cooled, and the top plate 22 existing directly above the heating coil 14 is also cooled.

Reference numeral 96A is a through hole formed in the central portion of the partition plate 96. This through hole is formed directly above the infrared temperature sensor 5B that senses infrared rays radiated from the inner pot 3 and senses the temperature in a non-contact manner, and is open so as to allow infrared rays to pass through.

A lower space 108 surrounded by a magnetic shield plate 19 is partitioned below the partition plate 96, and an infrared temperature sensor 5B fixed by a support substrate 32 is arranged in this space. Since this structure is used, the infrared temperature sensor 5B is less likely to receive high heat from the heating coil 14, so that more accurate temperature detection can be performed.

Further, the infrared signal transmission / reception unit 34, which is a means for transmitting important control information to / from the rice cooking unit 1, is located in the second air passage SH2 on the front side of the room 97, and is magnetically shielded from the heating coil 14. It is on the opposite side of the plate 19. Therefore, the infrared signal transmission / reception unit 34 is also less susceptible to thermal influence from the heating coil 14. Similarly, the first input operating means 20 has a configuration in which a temperature rise can be avoided.

Although the room 97 is partitioned by the magnetic shield plate 19 (partition wall), for example, a plastic plate or the like may be arranged along the magnetic shield plate. That is, it is not necessary to configure the entire room 97 with the magnetic shield plate 19.

Next, FIG. 30 will be described. FIG. 30 is a plan view of the lid of the electric rice cooker shown in FIG. 28.
In FIG. 30, reference numeral 20 denotes a second input operation means (input operation unit) of the rice cooking unit 1 of the electric rice cooker 100, which is a “rice cooking switch” 67 for starting the rice cooking operation or confirming the reservation. "Heat retention switch" 75 that commands a mode to keep cooked rice at a certain predetermined temperature, "Menu switch" 65 that selects various rice cooking menus such as normal rice cooking, rice porridge and cooked rice, cooks white rice and brown rice "Rice type switch" 63 to select and input the type of rice, the state of the rice cooking unit 1 and the next necessary operation are notified by voice, the volume to be notified is adjusted, and the voice mode is turned on and off. "Switch for voice navigation" 76, "Reservation switch" 68 for setting the reserved rice cooking function, "Off / cancel switch" 66 for canceling or turning off various input operations and modes, "Normal" for cooking method (cooking adjustment) , "Hard", and "Cooking method switch (hardness switch)" 64, which allows you to select "Okayu", which is different from normal rice cooking, are provided.

Each of these switches may be either a mechanical switch or a capacitive touch switch that closes the built-in electrical contacts when pressed by the user and generates an input signal, or can be used in combination. Is also good. When the heat retention switch 75 is operated after the unevenness step is completed, the heat retention mode is started.

Reference numeral 77 denotes a power saving switch that can reduce power consumption by a predetermined amount by pressing once. For example, if this power saving switch is pressed in the preheating process, the power consumption can be reduced only for the first few minutes, but the time required for the preheating process becomes longer by that amount, so that the first display screen 11A composed of a liquid crystal display screen or the like is used. A note to that effect is displayed, and even if the voice guide (navigation) switch 76 is not pressed each time, "Power saving mode has been selected. The preheating process time will be extended by several minutes." Guidance will be provided.

Reference numeral 78 denotes a health information display switch that displays information on healthy rice cooking on the first display screen 11A by pressing it once. When this key is pressed, information such as rice and rice cooking method can be obtained from the information server of the external organization 113 via the wireless communication unit 26 of the induction heating cooker 10 and the power command device 200.

Reference numeral 91 denotes an NFC input / output unit for bringing the information communication terminal device 115 having the NFC input / output unit close to enable short-range wireless communication, and is embedded in the lid 1B by approaching the upper surface thereof. It has been. Further, the information communication terminal device 115 is approached to the upper surface of the lid 1B so that the user can easily visually recognize the position of the wireless tag (NFC tag) 91T of the wireless communication unit (input / output means) 91 which is the NFC input / output unit. Alternatively, the target position for contact is indicated by the characters "TOUCH".

In FIG. 30, reference numeral 81 denotes power priority information displayed on the first display screen 11A, and the wireless communication unit 26 receives information related to commands such as the power reduction request signal AS1 and the power reduction command signal AS2. In this case, the main control device 80 of the induction heating cooker 10 transfers information to the rice cooking unit 1 by an infrared signal via the infrared signal transmission / reception unit 34, and in response to this, the control device 50 receives the first display screen 11A. The display is instructed to the drive circuit (not shown) of. However, it is displayed only during the period when the rice cooking unit 1 is executing the preheating process and the rice cooking process.

Reference numeral 82 is boiling process display information also displayed on the first display screen 11A. In the state shown in FIG. 30, the rice cooking process is currently being executed, and the inside of the inner pot 3 is in a boiling state, but even if the power reduction request signal AS1 and the power reduction command signal AS2 are received from the power command device 200. It is easy for the user to understand that it is a home appliance (electric rice cooker) that does not take measures to reduce electric power.

Next, FIG. 31 will be described. FIG. 31 is an explanatory diagram showing the cooperation relationship between the induction heating cooker 10 and the electric power command device 200 in the living space HA shown in FIG. 28 in chronological order.
In FIG. 31, L1 to L10 are operation information signals transmitted from the electric rice cooker 100 to the electric power command device 200.

In FIG. 31, the square frame shown by the broken line indicates the range in which the induction heating cooker 10 is related to the rice cooking unit 1.
L1 is a signal indicating that the main power is turned on (ON) when the commercial power supply 71 is connected to the induction heating cooker 10. If the induction heating cooker 10 has a power switch for turning on the main power, the power is transmitted when the switch is pressed and turned on.

L2 is the information that the reserved rice cooking mode is selected. L3 is advance notice information (also referred to as “start request signal”) to be transmitted when the reserved time for starting rice cooking approaches (for example, 5 minutes before the set time for reserved rice cooking).

In FIG. 31, the KS is a “rice cooking start permission signal” transmitted from the power command device 200 within a short time (usually within a few seconds) from the start notice information (also referred to as “start request signal”) L3. .. Unless this signal reaches the electric rice cooker 100, the main control device 80 of the electric rice cooker 100 does not transmit the actual heating start command signal to the inverter circuit 73.

L4 is one of the operation information signals, and indicates that the inverter circuit 73 is actually driven, the induction heating operation is started, and the preheating process is started.

L5 is an operation information signal indicating that the rice cooking process has been started. L6 is an operation information signal indicating that the rice cooking process has been completed. During the execution time of this rice cooking process, power is not reduced by external operations or commands. That is, even if the electric rice cooker 100 actually receives the power reduction command signal AS2, the power is reduced after the next operation information signal L6. In the power command device 200, even if the electric rice cooker 100 is registered in the electric power reduction target electric device, when the power command device 200 receives the operation information signal L5 that the rice cooking process is performed, the power reduction command is issued. Even if the signal AS2 is received, the power reduction command signal is not transmitted to the electric rice cooker 100 accordingly.

L6 indicates an operation information signal at which the rice cooking process is completed. L7 indicates that the unevenness process has been completed. L8 is an operation information signal indicating the start of the heat retention process. L9 is an operation information signal indicating the end of the heat retention process. The heat retention step is performed by energizing only two of the lid heating means 9A and the inner pot side heating means 9B.

L10 is a signal indicating a main power supply cutoff (OFF) in which the connection between the commercial power supply 71 and the induction heating cooker 10 is cut off. Each of these information L1 to L10 includes the current time in seconds. There is also a response signal from the power command device 200 side to each operation information signal, but detailed description thereof will be omitted.

The power command device 200 has the highest priority (than other home electric appliances EE) with respect to the required power of the electric rice cooker 100, and secures the required power of the electric rice cooker 100 with the highest priority. Therefore, even if the rated capacity of the breaker BK is about to be exceeded, or even if the upper limit power capacity specified by the user is about to be exceeded, the power will not be reduced in the boiling process, and delicious rice will be cooked. Can be done.

(Reserved rice cooking operation of electric rice cooker)
Next, the reserved rice cooking operation of the electric rice cooker 100, which is one of the features of the fourth embodiment, will be described with reference to FIG. 32.
Steps SE1 to SE8 show the operation up to the setting of reserved rice cooking, which is the operation of the control device 50 of the rice cooking unit 1.

When the user presses the reservation switch 68 of the second input operation means 12 to set the rice cooking time, and finally presses the rice cooking switch 67, a reservation rice cooking setting confirmation signal is generated and the reservation rice cooking setting is confirmed. (SE1).

In response to this confirmation signal, the wireless communication unit 26 transmits an operation information signal L2 indicating the setting of the reserved rice cooking mode to the power command device 200 (SE2). At that time, the rice cooking operation start time information is also transmitted in a 24-hour display such as "20:00". Further, it is preferable to include the information of the reservation setter (presumed to be the user) in the data with a code number indicating "resident B" or the like and transmit it.

Next, the time interval between the rice cooking start time set by the user and the current time is calculated. When the user sets the desired rice cooking time, the "rice cooking completion time" is set. That is, the set time is set to "20:00" in order to complete the rice cooking when returning home, but the control device 50 receives this input and receives the rice cooking process (in this case, the preheating process, the rice cooking process, etc.). The time required for the murashi step (including the three steps) is calculated, and the start time of the preheating step is calculated (SE3).

If there is a time of 60 minutes or more from the calculation result of step SE3, the result is "Yes" in the next step SE4, and the process proceeds to the next step SE5. The "standby process" in step SE5 means that when the standby determination unit built in the control device 50 receives information on the rice cooking start time, it is from the current time to a predetermined time (for example, 5 minutes before) of the designated time. During that time, the power supply to the control device 50 is cut off in order to put it in the standby state, and the first display screen 11A and the operation are also stopped. This eliminates the power consumption on the rice cooking unit 1 side. The standby determination unit uses the time information from the time measuring means 50T to determine whether or not the rice is cooked (started) at a predetermined time (for example, 5 minutes) before the current time for a certain period of time (for example, 1 minute). ) Checking at intervals. The description of the subsequent operations will be omitted.

On the other hand, if there is no time of 60 minutes or more from the calculation result of step SE3, the process proceeds to step SE6. In step SE6, it is checked at regular time intervals whether or not it is before a predetermined time (for example, 5 minutes) of the designated time, and if "Yes" is obtained in this step, the process proceeds to the next step S7.

In step SE7, the wireless communication unit 26 transmits the operation information signal (notice signal) L3 indicating the start of rice cooking in the reserved rice cooking mode to the power command device 200. At that time, the rice cooking operation start time information is also transmitted in a 24-hour display such as "20:00".

In the next step SE8, the voice notification means 90V and the first display screen 11A notify the start of the rice cooking operation by voice or characters. The description of the subsequent operations will be omitted.

(Monitoring operation during reserved rice cooking)
Next, FIG. 33 will be described.
Explaining the monitoring operation during reserved rice cooking of the electric rice cooker 100, which is one of the features of the fourth embodiment, steps SU1 to SU8 show the steps of the monitoring operation, and the main of the induction heating cooker 10 This is the operation of the control device 80. As described above, the rice cooking unit 1 may not be supplied with electric power to the control device 50 during the reserved rice cooking, so that the main control device 80 of the induction heating cooker 10 executes the monitoring operation.

Since the monitoring operation of the electric rice cooker 100, which is one of the features of the fourth embodiment, is performed not only during the reserved rice cooking but also during the rice cooking, it is not described as the reserved rice cooking in FIG. 33.

First, the monitoring operation starts from the stage where the rice cooking process or the reserved rice cooking process is started as shown in step SU1.
When the information communication terminal device 115 is brought close to the short-range wireless communication unit 91 in advance and the information communication terminal device 115 is registered in the rice cooking unit 1, the main control is performed when the rice cooking process or the reserved rice cooking process is started. The device 80 collates with the registered data (stored in the storage means 80R) transmitted in advance from the control device 50 of the rice cooking unit 1 (SU2), and if there is a registered information communication terminal device 115, , The information communication terminal device 115 is designated, and the wireless communication unit 26 notifies that rice cooking has started or reserved rice cooking has been set (SU3).

The information communication terminal device 115 may be registered on the induction heating cooker 10 side. Further, various methods for registering the identification information, the address, etc. of the information communication terminal device 115 in advance for the electric rice cooker 100 (including the induction heating cooker 10 and the rice cooking unit 1) are known such as MAC address transmission. Therefore, the description of these will be omitted.

After that, a case where the rice cooking unit 1 is temporarily moved from a predetermined position (reference position) on the upper surface of the top plate 22 of the induction heating cooker 10 will be described. For example, a case where the resident A sets the reserved rice cooker for the electric rice cooker 100, but another resident B carelessly moves the rice cooker unit 1 without knowing the circumstances is applicable.

In the induction heating cooker 10, during the reserved rice cooking period (from the setting of the reserved rice cooking to the completion of the actual rice cooking process, the unevenness process, and the heat retention process), the figure shows the figure at a fixed time or a predetermined timing. The reference position determination operation is performed as in step S6 of 12.

Therefore, if the rice cooking unit 1 moves from the reference position of the induction heating cooker 10 for some reason, step SU4 becomes "No" and the process proceeds to step SU6. Therefore, even if the information / communication terminal device 115 registered in advance is located in a remote place outside the living space HA, the wireless communication unit 26 notifies the information / communication terminal device 115 via the power command device 200. Will be done. If there is any reply from the information and communication terminal device 115 (SU7), the process proceeds to step SU8, and the notification means 70 of the induction heating cooker 10 notifies by characters, voice, or the like. When power is supplied to the rice cooking unit 1 from the induction heating cooker 10 side, the induction heating cooker 10 also sends external reply information to the rice cooking unit 1.

The "reply" referred to here is one that is selected and registered in advance from a plurality of types of standard messages and alarms on the information communication terminal device 115 side. For example, when a reply designation of "alarm" is specified, the reply is specified. In the induction heating cooker 10 and the rice cooking unit 1, since the rice cooking unit is in use, it is required to ask the resident at home to check it immediately. This reply may be set to be automatically transmitted promptly (for example, within 10 seconds) by the information communication terminal device 115 unless the user operates it.

If the rice cooking unit 1 does not move from the reference position of the induction heating cooker 10 and the rice cooking step, the unevenness step, and the heat retention step are all completed (SU5), the series of monitoring operations is completed. It should be noted that all of this monitoring operation is not executed only by the main control device 80 of the induction heating cooker 10, and a part of the operation may be assigned to the rice cooking unit 1. As described in the first embodiment, the rice cooking unit 1 is provided with a power supply unit such as a secondary battery 95, and it is possible to execute information processing for monitoring.

In the fourth embodiment, the induction heating cooker 10 is used during the reserved rice cooking period (from the setting of the reserved rice cooking to the completion of the actual rice cooking process, the unevenness process, and the heat retention process). Although the reference position determination operation was performed as shown in step S6, the heat retention step may not be the target. That is, it means that the maintenance of the cooperative relationship between the induction heating cooker 10 and the rice cooking unit 1 is terminated when the unevenness process is completed, and the position of the rice cooking unit 1 is guided when the unevenness process is completed. The induction heating cooker 10 is not affected by any operation even if it is removed from the top of the cooking cooker 10 and changed to another place such as a table. In this way, when the unevenness step is completed, the input operation function is not restricted to the first input operation means 20, so that the induction heating cooker 10 can be used immediately for another cooking.

Summary of Embodiment 4.
As is clear from the above description, the fourth embodiment discloses a cooking system having the following configuration.
That is, the cooking system of the fourth embodiment is
An induction heating cooker 10 having a top plate 22 on the upper surface, a rice cooking unit 1 having an inner pot 3 built in and used by being placed close to or in contact with the top plate 22 of the induction heating cooker 10. With
The induction heating cooker 10 has a heating coil 14 that induces and heats the inner pot 3, and a first input operation that is located on the front side of the heating coil 14 in order to set energization conditions for the heating coil 14. With means 20
The rice cooking unit 1 includes a second input operating means 12 for setting rice cooking conditions.
With the rice cooking unit 1 placed on the induction heating cooker 10, the rice cooking unit 1 covers the upper part of the first input operating means 20.
A gap S leading to the outside is formed between the upper surface of the first input operating means 20 and the lower surface of the rice cooking unit 1.
Rice cooking is controlled between the rice cooking unit 1 and the induction heating cooker 10 at a portion facing the bottom surface of the rice cooking unit 1 and the top plate 22 of the induction heating cooker 10 behind the gap S. A window 37 for passing an infrared signal for transmitting information is formed.
When at least one of the induction heating cooker 10 is in the rice cooking process by the rice cooking unit 1 or during the reserved rice cooking period, the induction heating cooker 10 confirms the placement of the rice cooking unit 1 by the infrared signal and puts it in a predetermined reference position. The configuration is characterized in that it is provided with a wireless communication unit 26 that wirelessly notifies the outside when it is determined that the rice cooking unit 1 is not present.

According to the cooking system having this configuration, overheating of the first input operating means 20 arranged in the front portion of the upper surface of the induction heating cooker can be prevented by the gap S, and the rice cooking unit 1 cooks rice. If it is detected that the rice is out of the reference position during the middle or reserved rice cooking period, it is notified to external devices such as the power command device 200 and the information communication terminal device 115, so that the rice is cooked reliably. It can be monitored as if it were done, and the convenience and security of the user can be increased.

Since the basic operation of the fourth embodiment is the same as that of the first embodiment, the same effect as that of the first embodiment can be expected.
Further, in the fourth embodiment, when it is detected that the rice cooking unit 1 deviates from the reference position during rice cooking or the reserved rice cooking period, the information / communication terminal device 115 or the like is notified, so that the rice is cooked reliably. It can be monitored so that it can be executed, and the convenience and security of the user can be increased.

Further, in the fourth embodiment, the partition plate 96 partitions the lower space 108 surrounded by the magnetic shield plate 19 below the partition plate 96, and the infrared temperature sensor 5B fixed by the support substrate 32 is arranged in this space. Therefore, the infrared temperature sensor 5B is less likely to receive high heat from the heating coil 14, so that more accurate temperature detection can be performed.

Further, in the fourth embodiment, the partition plate 96 partitions the lower space 108 surrounded by the magnetic shield plate 19 below the partition plate 96, and the infrared temperature sensor 5B fixed by the support substrate 32 is arranged in this space. Therefore, the infrared temperature sensor 5B is less likely to receive high heat from the heating coil 14, so that more accurate temperature detection can be performed.

Further, the vent 98, which is a vent and is formed at the rear end 19A of the magnetic shield plate 19, is also connected to the lower space 108, and a part of the cooling air from the cooling fan 13 is introduced. Therefore, the problem that the infrared temperature sensor 5B is overheated by receiving the high heat of the heating coil 14 does not occur.

Further, since the infrared signal transmission / reception unit 34 is on the front side of the room 97 and is on the opposite side of the heating coil 14 with the partition wall also serving as the magnetic shield plate 19, the infrared signal transmission / reception unit 34 is also on the heating coil 14. Since it is not easily affected by heat from the outside, it is possible to suppress the occurrence of failures and abnormalities due to heat. Similarly, the first input operating means 20 has a configuration in which a temperature rise can be avoided, so that it is possible to suppress a failure or shortening of the life of the electronic components arranged therein.

Further, in the fourth embodiment, as described with reference to FIG. 29, a chamber 97 (first air passage SH1) is partitioned below the top plate 22 of the induction heating cooker 10, and the heating coil 14 is provided therein. Since the room is arranged and cooled by the cooling air supplied from the cooling fan 13, the heating coil 14 is prevented from overheating, which contributes to the prevention of overheating of the top plate 22.

Further, since the cooling air of the cooling fan 13 reaches the periphery of the power transmission coil 17 by the second air passage SH2, the power transmission coil 17 is also cooled, and overheating of the power transmission coil 17 can be prevented.

Embodiment 5.
34 to 37 relate to the fifth embodiment of the present invention, and FIG. 34 is a flowchart 1 showing a control operation of the induction heating cooker and the rice cooking unit. FIG. 35 is a flowchart 2 showing a control operation of the induction heating cooker and the rice cooking unit of FIG. 34. FIG. 36 is a flowchart 3 showing a control operation of the induction heating cooker and the rice cooking unit of FIG. 34. FIG. 37 is a flowchart showing the control operation of the rice cooking unit of FIG. 34. The same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

The electric rice cooker 100 in the fifth embodiment changes the operation program at the time of starting the induction heating cooker 10. Further, the operation program of the control device 50 of the rice cooking unit 1 is changed to improve the operability when the user measures the weight of rice.

Hereinafter, the control operation step shown in FIG. 33 is an improvement of steps S1 to S12 in FIG. 12 of the first embodiment.
The same or the same steps as in FIG. 12 will be described with the same reference numerals.

First, when the power plug 101 of the induction heating cooker 10 is connected to the commercial power supply 71, the reed switch 31 is turned ON (closed) if the rice cooking unit 1 is placed in the correct position (S1).

Then, even if the user does not operate the first input operating means 20 or the second input operating means 12 of the rice cooking unit 1, the main control device 80 includes the infrared temperature sensor 5B and other current sensors (FIG. (Not shown) starts a self-check for any abnormality in the internal components of the induction heating cooker 10 (S2).

If there is no abnormality, the main control device 80 drives the power transmission coil 17 and starts supplying a predetermined electric power. The notification means 70 is also activated (S3). On the other hand, the cooling fan 13 is started to operate in the "weak" mode (S4). Therefore, the power transmission coil 17 is cooled by the cooling air.

At this stage, the main control device 80 knows that the rice cooking unit 1 is placed in the correct position because the reed switch 31 is turned on. Next, the rice cooking unit 1 is placed in the reference position. The determination means 33A is activated. In the first embodiment, the main control device 80 drives the reference position determination means (B) 33, but in the fifth embodiment, the control device 50 is controlled when power is supplied from the power supply means 6. The operation program of the device 50 is started, and the infrared signal transmission / reception unit 35 transmits an infrared signal to the infrared signal transmission / reception unit 34 (SM5).

Then, the infrared signal received by the infrared signal transmission / reception unit 35 is decoded by the reference position determination means 33B, and the result is input to the main control device 80. The main control device 80 finally confirms that the rice cooking unit 1 is placed in the correct position (SU4).

If, after the infrared signal transmission / reception unit 35 transmits a predetermined regular infrared signal to the infrared signal transmission / reception unit 34, the reference position determination means 33B cannot receive such a regular infrared signal. In that case, even if the rice cooking unit 1 is placed in the correct position, the cooking liquid from the previous cooking drips and becomes dirty and sticks to the upper surface of the window 37, which hinders infrared communication. It is assumed that there is. In this case, the main controller 80 side makes an error determination. The operation after this error determination (SU4) is shown in FIG.

Since operation data, temperature data, and the like are exchanged between the two infrared signal transmission / reception units 34 and 35 even during the rice cooking operation, the rice cooking operation is not permitted even if the window 37 is dirty. In FIG. 34, when the reference position determination result is NG in step SU4, the process proceeds to the abnormality response step shown in FIG. 16, which will be described later.

In FIG. 34, in step S7, the main control device 80 performs a process of invalidating the generation of the input command signal from the first input operating means 20. Specifically, the signal for generating the input signal of the first input operating means 20 is blocked so that the input signal is not generated, but the invalidating means is not limited to this method.

By the invalidation process of the input operation unit from the first input operation means 20, for example, even if the rice cooking unit 1 is momentarily lifted and the first input operation means 20 is operated, such an operation is mainly performed. Since it is not input to the control device 80, it is not possible to stop the rice cooking immediately before and start using the induction heating cooker 10 alone.

Next, in the rice cooking unit 1, the notification means 90 such as the voice notification means 90V notifies that the rice cooking operation is to be performed (S8A).
In the first embodiment, the induction heating cooker 10 is notified by a notification means 70 such as a voice notification means 70V, so this portion is also different from the first embodiment.

In the next step S9, the rice cooking unit 1 enters a standby state in order to determine whether or not a command to start cooking rice has been issued. After placing the rice cooking unit 1, it takes time to actually start cooking rice, such as adjusting the amount of water in the inner pot 3. Therefore, the standby time is measured by the time measuring means 80T (S10).

For example, there is no command signal indicating that rice cooking has started (S11), there is no command signal for starting rice cooking via the wireless communication unit 26 (S12), and a predetermined time T1 (for example, 60 minutes) is set from the stage of step 10. When the lapse has passed (S13: see FIG. 35), the main control device 80 determines that the rice cooking is suspended for some reason.

Next, FIG. 35 will be described.
The control operation step shown in FIG. 35 is an improvement of steps S13 to S18 in FIG. 13 of the first embodiment. In other words, it shows the operation when the time has passed without the essential rice cooking command while the rice cooking operation is being prepared for the start.

When a predetermined time T1 (for example, 60 minutes) has elapsed from the stage of step 10 (S13), the rice cooking unit 1 notifies that the rice cooking operation has been canceled by the notification means 70 such as the voice notification means 70V (SM14). .. It is different from FIG. 13 of the first embodiment that the rice cooking unit 1 notifies in this step.
Next, in the induction heating cooker 10, the control device 50 stops the power supply to the rice cooking unit 1 (S15). Specifically, a command is issued to stop the power supply to the power transmission coil 17 and the cooling fan 13.

When a predetermined time T2 (for example, 61 minutes) has elapsed from the stage of step 10 (S16), the main control device 80 cancels the invalidation process of the input operation unit from the first input operation means 20 (S17). .. Therefore, at this stage, for example, if the rice cooking unit 1 is moved to another place, the first input operating means 20 can be operated to start another cooking with the induction heating cooker 10. If the first input operating means 20 is not operated, the main control device 80 automatically shuts off the main power supply by itself, and operates in consideration of safety so that the heating operation is not carelessly performed. (S18).

Next, FIG. 36 will be described.
The steps of the control operation shown in FIG. 36 are the same as the steps SA1 to SA9 in FIG. 16 of the first embodiment. When the determination of "No" is made in step SM6 of FIG. 34, the process of FIG. 36 is executed by the main control device 80. That is, FIG. 36 shows an operation when the main control device 80 detects a situation in which the rice cooking unit 1 does not exist at the reference position before the rice cooking operation starts, and steps SA1 to SA9 shown in FIG. 36 are shown in FIG. Since it is the same as steps SA1 to SA9 shown, detailed description thereof will be omitted.

Hereinafter, FIG. 36 will be described. The control operation step shown in FIG. 36 is an improvement of step SR9 and subsequent steps in FIG. 20 of the first embodiment.

As described with reference to FIG. 19 of the first embodiment, when the user finishes inputting the hardness of the rice when cooking the rice (SR8), the control device 50 then activates the second display screen 11B of the rice. Display that the weight can be measured. Further, the voice notification means 90V is also used for notification (SR9).

In the fifth embodiment, when the lid 1B is opened, the lid 1B is then closed and the rice cooking switch 67 is pressed so that the rice can be cooked immediately without going through the step of measuring the weight of rice. Therefore, there is an advantage that the user who is proficient in adjusting the amount of water when cooking rice can quickly proceed with the steps up to the start of cooking rice.

In FIG. 37, when the second display screen 11B is activated (SR9) and the measurement of the predetermined time T6 is started (ST1), there is a step of determining whether or not the lid body 1B is open.
As described in the first embodiment, the lid opening / closing button for opening the lid 1B and the mechanism interlocking with the opening / closing operation are provided with a micro switch, a reed switch, etc. as the lid opening sensor 93, and the lid 1B is provided. The control device 50 may detect the opening.

Alternatively, before the second display screen 11B is activated, the control device 50 may monitor how the position of the control device 50 moves back and forth at the center of gravity of the rice cooking unit 1 and detect the opening of the lid 1B.
For example, as described in the first embodiment, two weight sensors are provided in the front-rear direction of the rice cooking unit 1 and the induction heating cooker 10, and the weights of the rice cooking unit 1 and the induction heating cooker 10 are attached to the weight sensors. When the lid 1B is opened, the lid 1B is supported by the rice cooking unit 1 in a state of being vertically or more stable and tilted backward via a hinge portion (not shown) at the rear. To.

Therefore, when the lid 1B is opened, the measured value of the weight sensor on the front side decreases before and after the lid 1B is opened, and the weight of the lid 1B is applied to the rear hinge portion (not shown). The measured value of the weight sensor on the rear side increases.

In particular, before the second display screen 11B is activated, there is a step (SR7, SR8) in which the rice brand and the degree of cooking of the rice, that is, the information on the hardness of the rice can be sequentially read out and corrected. Therefore, in the scene of operating the second input operating means 12, the user usually needs to close the lid 1B, and the measured value of the weight sensor on the front side at this time and the measured value on the rear side The balance of the measured values of the weight sensor changes with the subsequent opening of the lid 1B.

Therefore, the control device 50 uses software that analyzes the measured value data of a plurality of weight sensors as described above without providing hardware such as a micro switch or a reed switch as the lid opening sensor 93. The opening of 1B can be detected.

In FIG. 37, when the opening of the lid body 1B is detected, the control device 50 proceeds to the next operation step ST12. Then, just in case, the lid 1B is checked again to see if it is open, and when it is detected that the rice cooking switch 67 is pressed (ST13), the first display screen 11A and the voice notification means 90V are detected. Then, the lid 1B is kept closed as it is, a warning is given to prevent it from being opened (ST15), and it is detected that the lid 1B is closed (ST16). Proceed to SR10.

Therefore, in step SR10, voice guidance such as "The weight measurement result of rice was 500 g. Since the appropriate amount of water has been determined, the white rice is started to be cooked in the soft mode" is performed by the voice notification means 90V.
Further, the second display screen 11B ends the display operation (turns off).
In this way, it is possible to immediately shift to rice cooking without going through the step of measuring the weight of rice.

On the other hand, if it is determined in step ST2 that the lid 1B is open, the process proceeds to the next step ST3.
In this step ST3, the operation key 18A arranged in the operation unit 18 of the rice weight measurement is operated, and it is determined whether or not there is a rice weighing command. When the predetermined operation key 18A is pressed, the weight of the rice is measured with the lid 1B open (ST4).

The weight measuring means 94 measures the rice in a state of being put in the inner pot 3, the weight is notified by the voice notification means 90V, and the weight is also displayed numerically on the second display screen 11B (ST5).

After that, the amount of water corresponding to the weight of the rice is notified by voice notification means 90V by voice, for example, "500 milliliters", and is also displayed numerically on the second display screen 11B (ST6).

Therefore, with the lid 1B open, the notified amount of water was injected, and when the predetermined operation key 18A was pressed, rice and water were put into the inner pot 3 by the weight measuring means 94. It is weighed again in the state, and the determination result is notified by the voice notification means 90V, and is also displayed on the second display screen 11B (ST6).

After that, when it is detected that the rice cooking switch 67 is pressed (ST13), the first display screen 11A and the voice notification means 90V keep the lid 1B closed and do not open it. (ST15), and when it is detected that the lid 1B is closed (ST16), the process proceeds to step SR10 described above.

In step ST3, if the operation key 18A arranged in the rice weight measurement operation unit 18 is not operated and time elapses, the elapsed time is checked in step ST8 during that time, and the second display screen 11B is activated. If 30 minutes have not passed since the time, the voice notification means 90V notifies that the weight measurement command is waiting, and the second display screen 11B displays (ST11).

Such a reminder may be given every few minutes. If it is determined that 30 minutes have passed in step ST8, the user is taking some time to do some work with the lid 1B open, or is preparing for another cooking, and the rice cooking set is postponed. Since there is a possibility that it has been set to, an error notification is performed to call the user's attention (ST9). This error notification may be performed by the notification means 90 and the second display screen 11B. Then, the control device 50 cancels a series of rice cooking condition setting work, ends the operations of the second display screen 11B and the first display screen 11A, and turns off those screen displays (ST10).

If the rice cooking switch 67 is not pressed in step ST13 and the time elapses as it is, the elapsed time is checked in step ST14, and 30 minutes have not passed since the second display screen 11B was activated. , Returning to the step ST2, the check as to whether or not the lid body 1B is open is performed again. However, if 30 minutes have passed, the process proceeds to step ST9 to notify the error. This error notification may be performed by the notification means 90 and the first display screen 11A. Then, the control device 50 cancels a series of rice cooking condition setting operations, ends the operations of the second display screen 11B and the first display screen 11A, and turns off the screen displays (ST10).

Summary of Embodiment 5.
The electric rice cooker 100 shown in the fifth embodiment has a cooling fan 13 that supplies cooling air for cooling the heating coil 14 inside the induction heating cooker 10 as in the first embodiment. The infrared communication unit 34 for transmitting an infrared signal including control information for cooking rice between the induction heating cooker 10 and the rice cooking unit 1 and the power receiving coil 7 provided in the rice cooking unit 1 are not used. A transmission coil 17 that supplies power by contact is provided, respectively.
Further, it has a first air passage SH1 and a second air passage SH2 into which the cooling air from the cooling fan 13 is introduced, and the heating coil 14 is cooled by the cooling air of the first air passage SH1. The infrared communication unit 34 is configured to be cooled by the cooling air of the second air passage SH2.

According to the electric rice cooker having this configuration, it is possible to prevent overheating of the infrared communication unit 34 arranged inside the induction heating cooker 10.
Further, by arranging the power transmission coil 17 in the second air passage SH2, the temperature rise of the power transmission coil can be suppressed.

Further, the electric rice cooker 100 of the fifth embodiment is
An induction heating cooker 10 having a top plate 22 on the upper surface, a rice cooking unit 1 having an inner pot 3 built in and used by being placed close to or in contact with the top plate 22 of the induction heating cooker 10. With
The induction heating cooker 10 has a heating coil 14 that induces and heats the inner pot 3, and a first input operation that is located on the front side of the heating coil 14 in order to set energization conditions for the heating coil 14. With means 20
The rice cooking unit 1 includes a second input operating means 12 for setting rice cooking conditions.
With the rice cooking unit 1 placed on the induction heating cooker 10, the rice cooking unit 1 covers the upper part of the first input operating means 20.
A gap S leading to the outside is formed between the upper surface of the first input operating means 20 and the lower surface of the rice cooking unit 1.
Rice cooking is controlled between the rice cooking unit 1 and the induction heating cooker 10 at a portion facing the bottom surface of the rice cooking unit 1 and the top plate 22 of the induction heating cooker 10 behind the gap S. A window 37 for passing an infrared signal for transmitting information is formed.
The induction heating cooker 10 or the rice cooking unit 1 confirms the placement of the rice cooking unit 1 by the infrared signal before the start of the rice cooking process by the rice cooking unit 1, and the rice cooking unit 1 is not present at a predetermined reference position. When the determination is made (step SM6 in FIG. 34), the rice cooking operation is stopped (step SA8 in FIG. 36) without starting the energization of the heating coil 14, and there is a problem in mounting the rice cooking unit 1. This is a characteristic configuration in which notification is made in advance (steps SA1 and SA8 in FIG. 36) at a stage after detecting the presence.

Therefore, in the stage before starting the rice cooking process by the rice cooking unit 1, the placement of the rice cooking unit 1 is confirmed by the infrared signal, and after detecting that there is a problem in the placement of the rice cooking unit 1. Since the user is notified in advance of a problem such as stopping the rice cooking operation, there is an advantage that misunderstandings and erroneous operations in use by the user can be prevented.

Embodiment 6.
FIG. 38 relates to the sixth embodiment of the present invention, and is a flowchart showing a control operation of the induction heating cooker. The same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted. Further, the configuration of the second input operating means 12 of the lid 1B will be described below on the premise that the configuration is the same as that of FIG. 30 (Embodiment 4).

The electric rice cooker 100 in the sixth embodiment modifies the operation program of the induction heating cooker 10. Further, in particular, the operation program of the control device 50 after the rice cooking process is completed in the rice cooking unit 1 is changed.

The induction heating cooker 10 of the electric rice cooker 100 performs the same operation as the operation steps S1 to S30 shown in FIGS. 12 to 14 of the first embodiment.
Then, steps S30 and subsequent steps are improved as shown in FIG. 38.

First, when the rice cooking process is completed (S30), the notification means 70 of the induction heating cooker 10 notifies that the rice cooking process is to be started (SU1).
On the other hand, even in the rice cooking unit 1, in synchronization with this, the notification means 90 notifies by voice that the rice cooking process is to be started.

When the measurement of the elapsed time is started in order to grasp the unevenness time (SU2) and the predetermined unevenness process time (for example, 5 minutes) elapses, the notification means 70, for example, "Since the unevenness process is completed, You will be notified by voice such as "You can eat immediately" (SU3).

Since the heat retention switch 75 commands the start of the heat retention mode when operated after the unevenness process is completed, in the next step SU4, whether or not the heat retention switch 75 is pressed by the user is determined. Make a decision.

When the heat retention switch 75 is pressed, the control device 50 of the rice cooking unit 1 requests the main control device 80 to provide data of the temperature measurement result from the outside air temperature detecting means 15, and heat retention is based on the provided data. Calculate the possible time (SU5). It should be noted that the control device 50 may not request data provision, the main control device 80 itself may calculate the heat retention possible time, and the control device 50 may acquire the result. In the latter case, the control device 50 transmits a specific identification code or data indicating that the heat retention switch 75 has been pressed from the infrared signal transmission / reception unit 35, and the main control device 80 receives the data or the like and receives the data or the like. The calculation operation of the heat retention possible time is started.

If the heat retention switch 75 is not pressed within the predetermined time, the process proceeds to step SU5. For example, even if the user is clearly aware of cooking rice at the beginning of cooking rice, he / she may forget about cooking rice after that. If you forget to cook rice in this way, you may not be in the vicinity of the electric rice cooker 100, and you may be left as it is without noticing the end of the unevenness process.

In step SU5, for a predetermined time (for example, 15 minutes), the check as to whether or not the heat retention switch 75 is pressed is checked every minute, for example, but when this grace time is exceeded, the process proceeds to step 10.

In step 10, the notification means 70 of the induction heating cooker 10 notifies that the heat retention step has been completed.
Between steps SU4 and SU10, the lid heating means 9A, the inner pot side heating means 9B, and the induction heating coil 14 may be heated with the minimum heating amount (heat power) or may not be energized at all. In winter, when the temperature of the living space is low, the outside air temperature detecting means 15 inputs the room temperature data of the low temperature to the main control device 80, so that the rice cooking unit 1 cools down during the above-mentioned predetermined time (for example, 15 minutes). There is a possibility that it will end up.

Therefore, assuming such a situation, the main control device 80 drives all or a part of the lid heating means 9A, the inner pot side heating means 9B, and the induction heating coil 14, for example, about 30 W to 100 W in total. It is also programmed to temporarily perform the heat retention operation with the power consumption of.

In step SU7, the heat retention operation for the calculated heat retention possible time TX (for example, 3 hours) is started. Further, the notification means 70 notifies that the heat retaining process is to be started (SU7).
The heat retention step of the sixth embodiment is different from that of the first embodiment, and is performed by driving the induction heating coil 14. Therefore, a predetermined heat retention temperature (for example, around 70 ° C.) can be maintained even at the bottom of the inner pot 3 where it is difficult to raise the temperature only by the lid body heating means 9A and the inner pot side heating means 9B.

Then, the check (SU8) for checking whether the heat retention possible time TX (for example, 3 hours) has elapsed and the check (SU9) for checking whether the rice cooking unit 1 exists at the reference position are repeatedly performed (for example, a time interval within several seconds). so).

Therefore, a user other than the user who instructed the rice cooking operation did not notice that the rice cooking unit 1 was in the heat retaining operation, and moved the induction heating cooker 10 to use it for another cooking operation. If so, step SU9 is a “Yes” determination. Then, the notification means 70 of the induction heating cooker 10 notifies that the heat retention process has been completed. At about the same time, the notification means 90 on the rice cooking unit 1 side also notifies that the heat retention process has been completed (SU10).

Further, the input function of the first input operation means 20 of the induction heating cooker 10 is restored. That is, the input prohibition measure to the main control device 80 is released (SU11).
Therefore, the desired cooking can be started by immediately operating the first input operating means 20 of the induction heating cooker 10.

When the induction heating coil 14 is driven in the heat retention step, the drive of the inverter circuit 73 is stopped (SU12). When the lid heating means 9A and the inner pot side heating means 9B are heated by the electric power from the power feeding means 6, the control device 50 of the rice cooking unit 1 stops heating them (SU12).

Further, when the induction heating coil 14 is driven and the power is supplied from the power transmission coil 17, the operation of the cooling fan 13 that has cooled them is also stopped (SU13).

Then, the main control device 80 shuts off the main power supply circuit by itself. On the other hand, even on the control device 50 side of the moved rice cooking unit 1, since it is known by the reference position determination means 33 that the rice cooking unit 1 is not at the reference position, the control device 50 stops the power supply to the power transmission coil 17 and the second The function of the input operation means 12 of is stopped.

Summary of Embodiment 6.
The electric rice cooker 100 shown in the sixth embodiment has a cooling fan 13 that supplies cooling air for cooling the heating coil 14 inside the induction heating cooker 10 as in the first embodiment. The infrared communication unit 34 for transmitting an infrared signal including control information for cooking rice between the induction heating cooker 10 and the rice cooking unit 1 and the power receiving coil 7 provided in the rice cooking unit 1 are not used. A transmission coil 17 that supplies power by contact is provided, respectively.
Further, it has a first air passage SH1 and a second air passage SH2 into which the cooling air from the cooling fan 13 is introduced, and the heating coil 14 is cooled by the cooling air of the first air passage SH1. The infrared communication unit 34 is configured to be cooled by the cooling air of the second air passage SH2.

According to the electric rice cooker having this configuration, it is possible to prevent overheating of the infrared communication unit 34 arranged inside the induction heating cooker 10.
Further, by arranging the power transmission coil 17 in the second air passage SH2, the temperature rise of the power transmission coil can be suppressed.

Further, the electric rice cooker 100 of the sixth embodiment is
An induction heating cooker 10 having a top plate 22 on the upper surface, a rice cooking unit 1 having an inner pot 3 built in and used by being placed close to or in contact with the top plate 22 of the induction heating cooker 10. With
The induction heating cooker 10 has a heating coil 14 that induces and heats the inner pot 3, and a first input operation that is located on the front side of the heating coil 14 in order to set energization conditions for the heating coil 14. With means 20
The rice cooking unit 1 includes a second input operating means 12 for setting rice cooking conditions.
With the rice cooking unit 1 placed on the induction heating cooker 10, the rice cooking unit 1 covers the upper part of the first input operating means 20.
A gap S leading to the outside is formed between the upper surface of the first input operating means 20 and the lower surface of the rice cooking unit 1.
An infrared signal is transmitted between the rice cooking unit 1 and the induction heating cooker 10 at a portion facing the bottom surface of the rice cooking unit 1 and the top plate 22 of the induction heating cooker 10 behind the gap S. A window 37 for passage is formed and
The induction heating cooker 10 monitors the placement of the rice cooking unit 1 by the infrared signal while the rice cooking unit 1 is placed at a predetermined position and is executing the heat retention step, and the first input operation. Continue to disable the input operation of means 20
Further, when the induction heating cooker 10 cannot detect the presence of the rice cooking unit 1 at a predetermined position by the infrared signal, the heat retention process of the rice cooking unit 1 is terminated and the input of the first input operating means 20 is performed. It had a characteristic configuration of canceling the invalidation of the operation.

Therefore, it is possible to prevent overheating of the first input operating means 20 arranged in the front portion of the upper surface of the induction heating cooker.
Further, at the stage of the heat retention process by the rice cooking unit 1, the placement of the rice cooking unit 1 is confirmed by the infrared signal, and when it is detected that there is a problem in the placement of the rice cooking unit 1, the heat retention operation is stopped and the heat retention operation is stopped. Since the invalidation of the input operation of the first input operation means 20 can be canceled, there is an advantage that misunderstandings and erroneous operations in use by the user can be prevented.

Embodiment 7.
39 to 44 are related to the seventh embodiment of the present invention, and FIG. 39 is a perspective view of the electric rice cooker according to the seventh embodiment of the present invention. FIG. 40 is a plan view 1 of the lid of the rice cooking unit. FIG. 41 is a plan view 2 of the lid of the rice cooking unit. FIG. 42 is a block diagram showing a configuration of a control device for the rice cooking unit of FIG. 39. FIG. 43 is a flowchart showing a control operation when the rice cooking unit of FIG. 39 is stewed and cooked. FIG. 44 is an explanatory diagram of a control pattern in the stew cooking of the rice cooking unit of FIG. 39. The same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

In the electric rice cooker 100 according to the seventh embodiment, the cooking menu of the rice cooking unit 1 is particularly enhanced. That is, the rice cooking unit 1 enables "simmered" cooking, "porridge", and "steamed" cooking. In order to realize this, the operation program of the control device 50 of the rice cooking unit 1 is changed.
In addition, the operation program of the main control device 80 of the induction heating cooker 10 has also been partially changed.

Furthermore, a steam discharger (sometimes called a one-sided recovery device) for releasing steam generated during the rice cooking process inside the inner pot 3 is used to allow water to be injected into the inner pot 3 so that the user can inject water. It improves the convenience of adjusting the amount of water before the start of rice cooking.

Further, the second input operation means 12 has been improved so that the visibility of the first display screen 11A arranged there, the measurement instruction of the weight of rice, and the confirmation of the result can be easily performed.

The electric rice cooker 100 in the seventh embodiment is the same as the first embodiment in that the electric rice cooker 100 is composed of the induction heating cooker 10 and the rice cooking unit 1.
Further, the internal configuration of the induction heating cooker 10 is basically the same as that of the first embodiment.

Before going into the specific description of the seventh embodiment, the outline of "simmered" cooking, "porridge", and "steamed cooking" will be described.
(1) "Simmered" cooking: An electric rice cooker capable of cooking simmered food by putting ingredients such as vegetables and meat in soup or the like to which water or seasonings are added is described in, for example, Japanese Patent Application Laid-Open No. 2005-296366. It is proposed by JP-A-2007-181521 and JP-A-2004-329488. Further, it is also proposed in the above-mentioned Japanese Patent Application Laid-Open No. 2004-329488 that a dedicated inner pot is prepared for rice cooking and simmered food, and the inner pot is replaced and used according to the rice cooking and simmered food.

(2) "Porridge": A configuration in which an "porridge" menu is prepared in an electric rice cooker and porridge can be made is proposed by, for example, JP-A-2007-135884 and JP-A-8-164065. As shown in JP-A-2007-135884, there are thick porridge made with a relatively long heating time and thin porridge made with a relatively short time. When making porridge, it is necessary to use a heating pattern and heating power that are different from those for cooking rice.

"Steaming" cooking: Put a steaming table or net with many ventilation holes in the inner pot 3, put vegetables etc. on it, boil the water put in the bottom of the inner pot, and use the generated steam It heats vegetables and the like. Therefore, unlike when cooking rice, it is not necessary to close the lid 1B for cooking, but rather it is better to keep the lid 1B open.

The rice cooking unit 1 of the seventh embodiment has the following configuration based on the above-mentioned characteristics of each cooking.
In FIG. 39, reference numeral 12 denotes a second input operation means provided on the lid 1B, which includes a first display screen 11A composed of a liquid crystal display screen or the like.
Reference numeral 122 denotes a steam discharger having a circular planar shape. In this steam discharger, a first passage (not shown) for discharging steam generated inside the inner pot 3 during rice cooking is formed inside. That is, the internal space of the inner pot 3 and the external space of the rice cooking unit 1 are communicated with each other.

The steam discharger 122 is proposed, for example, by Japanese Patent Application Laid-Open No. 9-187371 and Japanese Patent Application Laid-Open No. 2014-83203.
Next, FIG. 40 will be described.
In FIG. 40, reference numeral 12 denotes a second input operation means provided on the lid 1B, which includes a first display screen 11A composed of a liquid crystal display screen or the like.

The steam discharger 122 is located behind the first display screen 11A, and is detachably mounted in a circular recess 123 recessed in a mortar shape.
Reference numeral 124 denotes a circular lid, which is made of a plastic material and is formed in a disk shape. The lid 124 closes the upper surface opening of the steam discharger 122. The lid 124 can be easily opened by the user during cleaning or water injection described later. Reference numeral 125 denotes a hinge shaft that rotatably supports the rear portion of the lid 124. The hinge shaft 125 is a member that connects the lid body 1B and the lid 124. With this configuration, the lid 124 is in a substantially vertical state (the posture is self-held in a standing state) with the hinge shaft 125 as a fulcrum in the most open state.

Reference numeral 126 denotes a plurality of steam discharge holes formed in the lid 124 so as to penetrate vertically, and in the seventh embodiment, a total of five are provided.
Reference numeral 127 denotes a water injection port exposed when the lid 124 is opened, and the water injection port penetrates the inside of the steam discharger 122 up and down. In other words, this steam discharger forms a second passage (not shown) inside which discharges steam generated inside the inner pot 3 during rice cooking. The first passage and the second passage may be used in combination, but normally, in the first passage, the amount of steam generated during rice cooking inside the inner pot 3 is suppressed, and the inner pot is used. In some cases, a throttle part or control valve mechanism that keeps the air pressure at the time of boiling in 3 is provided, and in some cases, a check valve that prevents the intrusion of cold air from the outside is provided when rice cooking is completed, so it is suitable for these objective functions. It may be formed separately as such.

In FIG. 40, the surface (upper surface) of the first display screen 11A also serves as a touch-type input screen that can capture and input a change in capacitance when the user touches a finger or the like.
In FIG. 40, 120 is a touch-type key and may also be referred to as an icon. The touch-type key is made to appear in correspondence with the display on the display screen 11B so that the control device 50 can visually recognize it each time it is needed. Since such touch-type input keys are well known, detailed description thereof will be omitted.

120A is a "rice cooking key" that instructs the control device 50 to cook rice, 120B is a "rice cooking key" that instructs the control device 50 to cook rice, 120C is a "steaming key" that commands the cooking of simmered food and stewed food. , 120D is a "steaming cooking key" that commands steaming cooking. Reference numeral 121 denotes an operation start switch, which is composed of touch-type keys. The operation start switch 121 disappears from the surface of the first display screen 11A after the operation such as rice cooking is started.

These keys 120A to 120D appear in a list state on the second display screen 11B as shown in FIG. 40 when the menu switch 65 is pressed when the rice cooking unit 1 is activated by the induction heating cooker 10. To do. Further, after touching any one of these keys 120A to 120D, the operation start switch 121 appears on the second display screen 11B.

FIG. 41 is a plan view of the lid of the rice cooking unit as in FIG. 40. In FIG. 41, 120R is a touch-type key for returning to the previous screen, and when it is touched, the state of the display screen shown in FIG. 40 is reached.

Reference numeral 128 denotes a touch-type key for instructing the control device 50 to measure the weight of rice.
Once the operation start switch 121 for starting heating is pressed, the key 120R disappears immediately and the weight measurement instruction cannot be given.

Reference numeral 129 is a water amount display unit, which displays an image of the amount of water that is insufficient for the optimum amount of water based on the weight calculated by the weight measuring means 94. Therefore, the triangular figure (indicator) 129A is displayed in a vertical row, but when water is put into the inner pot 3 and the weight increases, the figure 129A that glows blue increases. The appropriate amount of water is a state in which all five figures 129A glow blue. If excessive water is added, the figure changes to a red figure 129A instead of the blue glowing figure 129A, and all of them blink at the same time to warn the user that the amount of water is excessive.

In FIG. 42, 12T is a touch-type input means constituting the second input operation means 12, and includes the touch-type input keys 120A to 120D and 120R shown in FIGS. 40 and 41.
The microcomputer (not shown) constituting the control device 50 is operated by a control program for cooking rice and a control program for performing stew cooking, porridge, and steam cooking. These control programs are stored in the storage means (ROM) and the storage means 50R of the microcomputer.

Next, the case where the second input operation means 12 receives a command signal for starting stew cooking will be described with reference to FIG. 43.
FIG. 43 is a flowchart showing a control operation when the rice cooking unit 1 is stewed and cooked.

Step SW1 is a case where the stew key 120D is pressed and then the operation start switch 121 is pressed.
The control device 50 notifies that the stew cooking is started by the voice notification means 90V (SW2).

The control device 50 confirms that the lid 1B is closed by the lid opening sensor 93, and if it is closed, issues a measurement command signal to the weight measuring means 94, and cooks rice at the stage immediately before the start of the boiling process. The weight of the unit 1 is measured (SW3).

The control device 50 receives the measurement result signal from the weight measuring means 94, and stores the weight value indicated by the measurement result signal in the storage means 50R.
Further, the measurement result is notified by the notification means 90. Specifically, the voice notification means, for example, notifies that "the current weight is 1500 g", and also displays "measurement result: 1500 g" on the second display screen 11B (SW4).

Next, the control device 50 transmits the basic information necessary for executing the stew cooking to the induction heating cooker 10 by the infrared signal from the infrared signal transmission / reception unit 35. For example, in order to perform the operation pattern as shown in FIG. 44, the execution programs in the sections A to X are transmitted so that the stew step and the low temperature heating step can be sequentially executed.

It should be noted that the control programs for various cooking such as stew cooking and rice cooking are not transmitted from the rice cooking unit 1 to the induction heating cooker 10 each time, but are prepared in advance by the induction heating cooker 10 (stored in the storage means 80R). ) Then, the rice cooking unit 1 may transmit the progress of each process, the temperature data of the inner pot 3, and the like.

In the induction heating cooker 10, the heating coil 14 is driven by the inverter circuit 73 in response to the command signal from the rice cooking unit 1 to start cooking, and the operation of the cooling fan 13 is also started.

In the next step SW5, the inner pot of the rice cooking unit 1 is induced and heated by the heating coil 14, and the temperature rises. Therefore, it is determined whether or not the boiling temperature has been reached.
As shown in FIG. 44, it is necessary to maintain TY for a predetermined time in a state where the temperature reaches the boiling temperature level. The length of this time varies depending on the ingredients to be cooked, but is, for example, 30 minutes or more.
This time TY can be specified in the second input operation means 12 before the start of the stew cooking. Alternatively, when the material to be stewed is selected, the time is set by the control device 50.

The timing for issuing a measurement command signal to the weight measuring means 94 and measuring the weight of the rice cooking unit 1 (hereinafter, referred to as “measurement time”) is determined in advance by the control device 50. Further, the measurement command can be issued each time the key 128 is pressed.
As described above, the stage P1 in which the operation start switch 121 is pressed is one (first) of the measurement periods.
Further, the stage where the key 128 is arbitrarily pressed is also one of the measurement periods.

In the following description, a scene in which the weight is automatically measured by the control device 50 even if the key 128 is not pressed arbitrarily will be described.
As shown by reference numerals P1 to P4 in FIG. 42, there are a total of four automatic measurement timings.
In step SW6, the measurement of the elapsed time from the time when the state of reaching the boiling temperature level is confirmed is started. This time is necessary when determining whether or not the "predetermined time TY" described later is maintained. The length of this time varies depending on the ingredients to be cooked, but is, for example, 30 minutes or more.

When it is determined in step SW7 that it is time to measure, the process proceeds to step SW8, and the control device 50 commands the weight measuring means 94 to perform the measurement operation. Then, it receives the measurement result signal from the weight measuring means 94, compares the weight value shown in the measurement result signal with the previous weight value stored in the storage means 50R, and determines whether or not the weight is reduced (SW9). ..

The "weight reduction" referred to here is based on a predetermined weight value (for example, 100 g), and if the weight is not reduced to this extent, step SW9 becomes "No" and boiling is performed in the next step SW14. It is determined whether or not the step (section B in FIG. 44) has been completed.

When it is determined that the step weight is reduced (SW9), the weight reduction rate is then calculated (SW10).
For the initial weight (eg 1500 g as described above), the rate (%) is calculated to see the effect of the decrease. For example, if the weight is reduced by 100 g, it is equivalent to 6.6% of 1500 g, so it is rounded up to "7%".

If the determination is "No" in this step SW10, the process proceeds to the step SW14. When the determination is "Yes", the weight value and the rate of change (decrease rate) at that time are stored and stored in the storage means 50R (SW12).

In the next step SW13, the second display screen 11B displays "Measurement result: 1300 g. Weight is reduced by 200 g". Further, the same information is also transmitted by voice using the voice notification means 90V.

Next, the control device 50 transmits a command signal from the infrared signal transmission / reception unit 35 to the induction heating cooker 10 by an infrared signal requesting that the stew cooking be stopped urgently (SW13). As a result, the stewed cooking by the rice cooking unit 1 is stopped.

In step SW14, it is determined whether or not the boiling step (section B in FIG. 44) has been completed, and if so, the process proceeds to the next low-temperature heating step.

Next, FIG. 44 will be described. FIG. 44 is an explanatory diagram of a control pattern in the stew cooking of the rice cooking unit 1. The vertical axis shows the temperature of the inner pot 3, and the horizontal axis shows the elapsed time from the start of stew cooking. The temperature of the inner pot 3 is measured by the inner pot temperature detecting means 5.

As can be seen from FIG. 44, in the section A, the heating coil 14 is heated at the maximum thermal power (for example, 1300 watts), and the temperature of the inner pot 3 rises to about 100 ° C. to 105 ° C. at once.
When the inner pot temperature detecting means 5 detects that the temperature of the inner pot 3 has reached 100 ° C. or higher, this temperature data is transmitted as an infrared signal from the infrared signal transmitter / receiver 35 to the induction heating cooker 10. ..

The induction heating cooker 10 is controlled to reduce the heating power of the inverter circuit 73 and maintain the state for a predetermined time (TY). Actually, it is not always necessary to keep the temperature at 100 ° C, and it is sufficient that the temperature is maintained at 98 ° C or higher.

When it is determined in step SW14 of FIG. 43 that the boiling step (section B in FIG. 44) has been completed, the process proceeds to step SW15 of the low-temperature heating step of FIG.
In section C, in the induction heating cooker 10, the inverter circuit 73 is stopped and induction heating is not performed at all. Then, it waits until the inner pot temperature detecting means 5 of the rice cooking unit 1 detects that the inner pot 3 naturally cools to 85 ° C.

When the inner pot temperature detecting means 5 detects that the inner pot 3 has naturally cooled to 85 ° C., the induction heating cooker 10 receives an infrared signal indicating the temperature detection data, and the inverter circuit 73 is used in the induction heating cooker 10. Drive to heat the inner pot 3. Then, it is maintained at around 80 ° C. to 85 ° C.

As shown in FIG. 44, section D is induced to heat, section E is naturally radiated, and then section N is induced to be heated again, and so on, and intermittent heating is repeated several times or more to add broth and seasonings to the ingredients of the simmered dish. The liquid etc. permeates and makes it delicious. In addition, instead of the method of repeating energization and de-energization as in the sections D and E, there is also a method of lowering the energization rate to reduce the amount of heating per unit time, but in the seventh embodiment, heating is performed. It is expected that convection will be generated in the cooking liquid inside the inner pot 3 by performing it intermittently (intermittently).

The length of the low temperature heating process is not constant and varies depending on the type and amount of simmered food. It may take several hours or more because the meat and vegetables are slowly boiled and the broth etc. penetrates inside.
Finally, the induction heating by the heating coil 14 is stopped and waits until it cools naturally.
In FIG. 44, when the temperature finally drops to about 70 ° C., the cooking of the simmered food is completed. At this point, the rice cooking unit 1's notification means 90 and the induction heating cooker 10's notification means 90 respectively cook. Notification of the end is given.

P1 to P4 shown in FIG. 44 are timings (measurement timings) in which the rice cooking unit 1 issues a measurement command signal to the weight measuring means 94 and measures the weight of the rice cooking unit 1 as described above. Each of the section B, the section E in which the heating by the heating coil 14 is temporarily stopped (paused), and the section X of the natural heat dissipation are set once.

Of these, if it is detected in the section B of the boiling process that the weight is significantly reduced as in step SW11 at the measurement time P2, the probable cause is that the boiling is intense and the water is excessively evaporated. It is assumed that the cooking liquid has overflowed from the inner pot 3 due to the violent boiling.

In this stewed cooking, when entering the section C, for example, at the stage of step SW14 in FIG. 43, it is possible to make a voice notification that the lid 1B may be opened, and the lid opening sensor 93 can be used for the lid 1B. Even if the opening of the lid 3 is detected, it is not treated as an error in the section C to the section X, so it is expected that the amount of water evaporated from the inner pot 3 will increase.

In such stew cooking, in the seventh embodiment, the weight measuring means 94 grasps that the broth and the seasoning liquid have decreased at a predetermined measurement time, and if the amount is excessively decreased, the heating operation is performed in the middle. It can be stopped automatically. For this reason, it is possible to cook with confidence even if the user does not always watch over the stewed cooking that requires a relatively long time.

Further, in the seventh embodiment, as the timing (measurement timing) for the weight measuring means 94 to automatically measure the weight of the rice cooking unit 1, the heating stopped (paused) by the heating coil 14 is selected. Therefore, while the heating is stopped in this way, the measurement can be performed in a quiet state without being affected by convection of the object to be cooked inside the inner pot 3 or slight vibration due to boiling, and accurate weight measurement can be expected.

Further, in the seventh embodiment, water can be injected into the inner pot 3 by using a steam discharger. Therefore, for example, after putting water into the inner pot 3 as a rough guide, the lid 1B is closed. In that state, the lid 124 can be opened, and water can be replenished from above the water injection port 127 with a cup or the like. Moreover, if the user presses the weighing instruction key 128 in that state (the lid 1B is not opened or closed), the weight measuring means 94 measures the weight at that time. Therefore, if the amount of rice is predominantly used in the second input operation means 12 before this, the total weight including the amount of water corresponding to the amount of rice and the total weight of the inner pot 3 as a result of water injection can be obtained. The difference can be recognized by the figure 129A displayed on the water amount display unit 129.
In addition to or instead of the figure 129A, for example, a numerical value indicating the amount of insufficient water may be displayed.

As described above, the seventh embodiment has a configuration for improving the convenience of adjusting the amount of water before the start of cooking rice.

Further, although the effect of detecting the weight change by the rice cooking unit 1 was explained only in the case of the boiling process, "porridge" which requires a process of heating for a relatively long time with the lid 1B open, and similarly in the inner pot 3 The same effect can be expected even if it is applied to "steaming" cooking that requires continuous steam generation by heating the water in the rice porridge.

Summary of Embodiment 7.
The electric rice cooker 100 shown in the seventh embodiment has a cooling fan 13 that supplies cooling air for cooling the heating coil 14 inside the induction heating cooker 10 as in the first embodiment. The infrared communication unit 34 for transmitting an infrared signal including control information for cooking rice between the induction heating cooker 10 and the rice cooking unit 1 and the power receiving coil 7 provided in the rice cooking unit 1 are not used. A transmission coil 17 that supplies power by contact is provided, respectively.
Further, it has a first air passage SH1 and a second air passage SH2 into which the cooling air from the cooling fan 13 is introduced, and the heating coil 14 is cooled by the cooling air of the first air passage SH1. The infrared communication unit 34 is configured to be cooled by the cooling air of the second air passage SH2.

According to the electric rice cooker having this configuration, it is possible to prevent overheating of the infrared communication unit 34 arranged inside the induction heating cooker 10.
Further, by arranging the power transmission coil 17 in the second air passage SH2, the temperature rise of the power transmission coil can be suppressed.

Embodiment 8.
45 to 46 relate to the eighth embodiment of the present invention. FIG. 45 is a plan view of an electric rice cooker and an induction heating cooker. FIG. 46 is a vertical cross-sectional view seen from the right direction (R direction) on the XX line of FIG. 45. The same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and duplicate description is omitted.

The induction heating cooker 10 according to the eighth embodiment is provided with heating portions (also referred to as "heating ports") on the top plate 22 at symmetrical positions with the left and right center lines CL1 in between. One of the features is that it is a "two-port" induction heating cooker. One or a plurality of heating coils are arranged in one heating unit (heating port).

In the induction heating cooker, in addition to the method of arranging a plurality of annular heating coils concentrically and heating one object to be heated by these heating coils, a "multi-coil method" has also been proposed.
In the multi-coil system, for example, a large number of heating coils having a diameter of about several cm to 10 cm and a circular outer shape are regularly arranged below the top plate 22. All of these heating coils have the same shape, the same structure (winding structure, etc.), and the same heating capacity (rated maximum thermal power). That is, the same heating coils are regularly arranged in front, back, left and right, and the heating coils are arranged so as to be as close to each other as possible.

In other words, an aggregate of four or more heating coils adjacent to each other is arranged in one heating port, and the aggregate of the heating coils constitutes "one heating port".

In the multi-coil method, various proposals have already been made for a method for detecting the presence or absence of a heated object such as a metal pot, which will not be described in detail. For example, Japanese Patent Application Laid-Open No. 2010-165656 in Japan The one shown in the publication is an example. In addition, an optical sensor that radiates light toward the bottom surface of the object to be heated and uses the reflected light to detect the presence of the object to be heated can be used, or a weak amount of current flowing through the induction heating coil can be detected. Various methods such as a method for detecting the presence of an object to be heated can be applied.

The multi-coil method as described above can also be adopted in the heating port of the induction heating cooker 10 in the eighth embodiment, but in the eighth embodiment, a normal annular heating coil is arranged.

The right operation unit 20R is provided so that the control conditions of the heating unit (heating port) on the right side of the left and right center lines CL1 can be input.
Alternatively, the left operation unit 20L is provided so that the control conditions of the left heating unit (heating port) can be input. These two operation units constitute the first input operation means 20.

Further, in the eighth embodiment, the operation button 150A of the main power switch 150 (not shown) is arranged at the front left and right center of the top plate 22 so as to cross the left and right center lines CL1. It is one of the characteristics.

FIG. 45 will be described.
The induction heating cooker 10 has a cooling fan 13, a heating coil 14, a power transmission coil 17, a partition wall 47 forming a first air passage SH1, a control device 50, and a first input in the internal space thereof. The operation means 20 and the infrared signal transmission / reception unit 34 constituting the infrared communication unit are provided.

The heating coil 14 is installed on a support plate 140 called a coil base made of heat-resistant plastic or the like. The support plate 140 is formed with a large number of large through holes 141 as a whole in order to increase the air permeability.
Reference numeral 10H is a large circular opening formed on the upper surface of the main body case 10A of the induction heating cooker 10, and is formed one by one at the heating port. That is, they are formed at symmetrical positions with the left-right center line CL1 as a boundary and having the same size (caliber). A heating coil 14 is installed in accordance with this opening.

Reference numeral 142 denotes a magnetic shield plate horizontally installed so as to cover the entire lower portion of the heating coil 14.
Reference numeral 143 is a circuit board on which the inverter circuit 73 is mounted, and various electric components such as a semiconductor power control element and a switching element are mounted on the circuit board. Reference numeral 144 is a support plate that supports the circuit board.

The cooling fan 13 is arranged close to directly above the intake port 145 formed on the bottom wall surface of the main body case 10A. For example, an axial flow type blower fan is used. The intake port 145 is composed of a large number of holes having a narrow slit shape or a small diameter. Reference numeral 13C is a fan case having an open top and bottom. The 13M is a fan motor installed directly above the intake port 145, whereby the fan 13F is rotationally driven. The circle shown by the broken line in FIG. 46 indicates the range of the intake port 145. The circle shown by the broken line on the outer side shows the outer shape of the fan case 13C.

In FIGS. 45 and 46, 47 is a partition wall. This partition wall may be integrally formed from the bottom wall surface of the plastic main body case 10A, or may be formed by a separate member. As shown in FIG. 45, the partition wall 47 is formed at a height that reaches the ceiling surface from the bottom wall surface of the main body case 10A.

As shown in FIG. 45, the partition wall 47 is located around the cooling fan 13, the heating coil 14, and the power transmission coil 17, and is spaced from each other on both the left and right sides and the front side. It is formed in a series so as to surround three directions. The inside of the partition wall 47 is the (first) air passage SH1 of the cooling fan 13.

The rear end portion 47E of the partition wall 47 extends to the back surface (rear wall surface) of the main body case 10A. Therefore, the partition wall 47 partitions the first air passage SH1 in the main body case 10A. ing.

Further, the rear end portion 47E on the left side of the partition wall 47 approaches the exhaust port 148 side, which will be described later, as it goes to the rear end.

Reference numeral 80 denotes a main control device installed outside the rear end portion 47E on the left side of the partition wall 47. Reference numeral 147 is a support plate on which the main control device 80 is mounted, and 148 is an exhaust port formed by arranging a large number of the support plates 148 on the back surface (rear wall surface) of the main body case 10A. This is for the air to be exhausted.

Reference numeral 142 denotes a magnetic shield plate horizontally installed so as to cover the entire lower portion of the heating coil 14.
Reference numeral 143 is a circuit board on which the inverter circuit 73 is mounted, and various electric components such as a semiconductor power control element and a switching element are mounted on the circuit board. Reference numeral 144 is a support plate that supports the circuit board.

Reference numeral 74A is a detection circuit of the top plate temperature detecting means 74 installed on the support plate 147. The top plate temperature detecting means 74 uses, for example, a thermistor (temperature detecting element) 74S as a contact-type temperature sensor that contacts the back surface (lower surface) of the top plate 22 and measures the temperature thereof. Reference numeral 74C is a signal line for transmitting the temperature detection result data to the detection circuit 74A, and connects the thermistor 74S to the detection circuit 74A. The temperature data detected from the detection circuit 74A is transmitted to the main control device 80. As shown in FIG. 46, the thermistor (temperature detecting element) 74S is installed so as to penetrate the central portion (hollow portion) of the heating coil 14 having a hollow annular planar shape.

Further, the inside of the induction heating cooker 10 is partitioned back and forth by the partition wall 47 at the rear portion of the first input operating means 20, and the front FR side space 146 and the rear BU side space of the partition wall 47 are air. Is not distributed. The meaning of "not circulating" here does not mean that the air flow is completely blocked in a strict sense, but the air inside the first air passage SH1 is the partition wall 47. It refers to the extent to which it does not flow beyond.

In FIG. 46, the internal structure of the right half from the left and right center lines CL1 is mainly shown, but the arrangement of the heating coil 14, the cooling fan 13, and the like is basically the same in the left half. However, on the left side, when the rice cooking unit 1 is not used, the infrared communication unit 34 does not have to be installed.

The rice cooking unit 1 is shown in the frame of the broken line in FIG. 46. It has a flat size that covers only the right half from the left and right center lines CL1 of the induction heating cooker 10, and as is clear from FIG. 46, when trying to cook rice with the right heating port of the induction heating cooker 10. The main body case 10A can cover the right operation unit 20R, but even in this case, the operation button 150A of the main power switch 150 is not covered.

In the eighth embodiment, since the operation buttons 150A of the main power switch 150 are arranged at the left and right center portions of the top plate 22 so as to cross the left and right center lines CL1, the induction heating cooker 10 is used alone. In this case as well, when the rice cooking unit 1 is mounted to cook rice or the like, it is necessary to press the operation button 150A first to turn on the main power switch 150. After cooking, the operation button 150A may be pressed to turn off the main power switch 150. If you want to turn off the power in an emergency even during cooking, you can press the operation button 150A to shut off the main power and stop the heating operation.

Further, the infrared temperature sensor 5B as used in the first embodiment is not used. As the top plate temperature detecting means 74, a contact-type temperature sensor (temperature detecting element) 74S that contacts the back surface (lower surface) of the top plate 22 and measures the temperature is used, and therefore, as compared with the first embodiment. The configuration can be simplified.

Summary of Embodiment 8.
As described above, the electric rice cooker 100 of the eighth embodiment realizes the third invention with the following configuration.
That is, the induction heating cooker 10 provided with the induction heating coil 14 and the first input operating means 20 located on the front side of the heating coil 14 and inputting the induction heating conditions.
A rice cooking unit 1 including an inner pot 3 that houses the rice to be cooked and is heated by the heating coil 14 and a second input operating means 12 for inputting rice cooking conditions is provided.
The induction heating cooker 10 includes an infrared communication unit 34 for exchanging information necessary for controlling rice cooking between the cooling fan 13 that supplies cooling air to the heating coil 14 and the rice cooking unit 1. A transmission coil 17 that supplies electric power to the rice cooking unit 1 in a non-contact manner is provided.
A partition wall 47 for partitioning the internal space of the induction heating cooker 10 is provided, and the partition wall 47 partitions the first air passage SH1 for guiding the cooling air from the cooling fan 13 to the heating coil 14.
The infrared communication unit 34 has a configuration in which the infrared communication unit 34 is arranged inside the first air passage SH1 on the upstream side of the flow of the cooling air of the cooling fan 13 with respect to the heating coil 14.

According to the electric rice cooker 100 shown in the eighth embodiment, the heat of the heating coil 14 having a relatively high temperature is released to the outside of the main body case 10A by the cooling air from the cooling fan 13.
Since the infrared communication unit 34 is arranged on the upstream side of the cooling air flow of the cooling fan 13 with respect to the heating coil 14, there is almost no possibility that heat is dissipated from the heating coil 14, so that the cooling fan With the addition of the effect of positively and continuously cooling by 13, the temperature rise is surely suppressed and the overheated state does not occur.

As described above, according to the electric rice cooker 100 having this configuration, it is possible to prevent overheating of the infrared communication unit 34 arranged inside the induction heating cooker 10.
Further, since the power transmission coil 17 is arranged on the upstream side of the flow of the cooling air from the heating coil 14, the temperature rise of the power transmission coil can be suppressed by the cooling air of the cooling fan 13.

Further, the eighth embodiment is an electric rice cooker adopting the configuration of the fourth invention.
That is, the electric rice cooker of the eighth embodiment is
An induction heating cooker 10 having an induction heating coil 14 and a first input operating means 20 located in front of the heating coil 14 for inputting induction heating conditions.
A rice cooking unit 1 including an inner pot 3 that houses the rice to be cooked and is heated by the heating coil 14 and a second input operating means 12 for inputting rice cooking conditions is provided.
In the induction heating cooker 10, right heating portions (heating ports) and left heating portions (heating ports) for heating the object to be heated are arranged on the left and right sides of the upper surface of the surface with the center line CL1 in the front-rear direction sandwiched.
The induction heating cooker 10 exchanges information necessary for controlling rice cooking between the cooling fan 13 that supplies cooling air to the heating coil 14 and the induction heating cooker 10 and the rice cooking unit 1. An infrared communication unit 34 for this purpose and a transmission coil 17 for supplying power to the rice cooking unit 1 in a non-contact manner are provided.
An air passage (first air passage SH1) for guiding the cooling air from the cooling fan 13 to the heating coil 14 is formed.
On the upper surface of the induction heating cooker 10, a right operation unit and a left operation unit for inputting heating conditions for each heating unit are arranged on both left and right sides of the center line CL1.
Further, an operation button 150A, which is an operation surface of the main power switch 150, is arranged on the upper surface of the induction heating cooker 10.
When the rice cooking unit 1 is placed directly above the right heating unit or the left heating unit, the rice cooking unit 1 has a flat size so as to cover the right heating unit or the left heating unit dedicated to the heating unit from above. Have,
Even when the rice cooking unit 1 is placed directly above either the right heating unit or the left heating unit, the operation surface (operation button 150A) of the main power switch 150 is exposed. It is a configuration to do.

According to the electric rice cooker of the fourth invention, it is possible to prevent overheating of the infrared communication unit 34 arranged in the induction heating cooker.

Further, the right heating unit and the left heating unit can be used for cooking, respectively, and even when the rice cooking unit 1 is placed directly above either the right heating unit or the left heating unit, the operation button 150A of the main power switch is exposed. Therefore, cooking can be performed using the heating unit (heating port) and the operation unit on the side where the rice cooking unit 1 is not placed. Therefore, the convenience of the user is high.

Embodiment 9.
FIG. 47 relates to a ninth embodiment of the present invention, and is a plan view of an electric rice cooker. FIG. 48 is a vertical cross-sectional view taken along line XX of the electric rice cooker shown in FIG. 47. FIG. 49 is a plan view of the lid of the rice cooking unit of the electric rice cooker of FIG. 47. FIG. 50 is a flowchart 1 showing a control operation during rice cooking in the rice cooking unit of FIG. 47. FIG. 51 is a flowchart 2 showing a control operation during rice cooking in the rice cooking unit of FIG. 47. FIG. 52 is a flowchart 3 showing a control operation during rice cooking in the rice cooking unit of FIG. 47. The same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and duplicate description is omitted.

The rice cooking unit 1 is shown by a broken line frame in FIG. 47.
The induction heating cooker 10 according to the ninth embodiment is provided with heating portions (also referred to as "heating ports") on the top plate 22 at symmetrical positions with the left and right center lines CL1 in between. One of the features is that it is a "two-port" induction heating cooker, and it has a configuration similar to that of the eighth embodiment.

Further, the electric rice cooker 100 according to the ninth embodiment is further improved in any of the cases where the rice cooking unit 1 is provided with the weight measuring means 94 or the induction heating cooker 10 is provided with the weight measuring means 94. Another major feature is that the user can check the weight measurement history of rice. This makes it possible to check how much rice has been cooked by weight in the past, which can be useful information for new purchases of rice and checking of inventory.

Further, the difference between the ninth embodiment and the eighth embodiment is the position of the cooling fan 13. That is, as shown in FIG. 48, the cooling fan 13 is arranged at a position directly below the heating coil 14 so that the heating coil 14 directly above can be cooled when the sucked cold air is blown upward. Is.

Like the rice cooking unit 1, the induction heating cooker 10 in the first to eighth embodiments was a "portable type" that could be freely moved to a place used by the user. On the other hand, the induction heating cooker 10 of the ninth embodiment may be portable, but is configured assuming a "built-in type" (built-in type) form installed in kitchen furniture such as a sink. There is.
Therefore, unlike the first to eighth embodiments, the power plug 101 is always connected to a dedicated power supply unit prepared on the wall side of the house on the back side of the kitchen furniture.

With such a configuration, in the ninth embodiment, the main power switch 150 (not shown) is operated at the left and right center portions of the top plate 22 so that the left and right center lines CL1 of the induction heating cooker 10 cross. Button 150A is arranged. Then, whether the induction heating cooker 10 is used alone or the rice cooking unit 1 is placed on the rice cooking unit 1 to cook rice or the like, it is necessary to first press the operation button 150A to turn on the main power switch. After cooking, the operation button 150A may be pressed to turn off the main power switch.

As shown in FIG. 47, in the ninth embodiment, the infrared signal transmitting / receiving unit 34 is composed of two parts, an infrared signal transmitting unit 34A and an infrared signal receiving unit 34B. The signals of both the infrared signal transmitting unit 34A and the infrared signal receiving unit 34B are analyzed and processed by one second signal processing unit 36B, and the result of transmission / reception data analysis is output to the control device 50.

In FIG. 47, 17 is a power transmission coil, which is on the downstream side of the (first) air passage SH1 from the cooling fan 13, but is separated from the heating coil 14 in the vertical direction, and is the back surface (rear) of the main body case 10A. Since it is also separated from the exhaust port 148 on the wall surface), it does not come into contact with the warm air after cooling the heating coil 14.

In FIG. 48, 40 is a support substrate that supports the infrared signal transmission / reception unit 34. In the first embodiment, the support substrate 40 is horizontally supported by connecting the left end portion to the partition wall 47. However, in the ninth embodiment, such a structure is not adopted, and the support substrate 40 is supported by the horizontal operation unit support frame 151 that supports the electronic switch 41.

Next, FIG. 49 will be described.
In FIG. 49, reference numeral 153 is a history display key for instructing the control device 50 to display or notify (by voice notification means 90V) of the weight measurement result based on the history data of measuring the weight of rice in the past. ..
This history display key is displayed at a timely timing on the first display screen 11A having the function of the touch type input screen. Preferably, it is displayed at the timing when the first display screen 11A is started. Specifically, the history display key 153 may be displayed at the time of step SF4 in FIG. 50, which will be described later.

Since the functions of the first display screen 11A and various other keys (120R, 121, 128, etc.) are the same as those described with reference to FIG. 40, individual description thereof will be omitted. Further, the steam discharger 122 is the same as that described with reference to FIG. 40. Further, the water amount display unit 129 described with reference to FIG. 40 is also displayed on the first display screen 11A (the water amount display unit 129 is not shown in FIG. 49).

Next, the operation steps of the rice cooking unit 1 shown in FIGS. 50 to 52 will be described.
Since the operation step of FIG. 50 has basically the same part as the step shown in FIG. 19 of the first embodiment, a part of the symbol of the step shown in FIG. 19 is also described in the reference numeral.

In FIG. 50, the operation steps of the rice cooking unit 1 are shown by SF1 to SF14.
First, it is necessary to turn on the main power switch on the side of the induction heating cooker 10.
Next, when the rice cooking unit 1 is correctly set on the induction heating cooker 10, the power receiving coil 7 is started to be driven by the power transmission coil 17 (SF1). Then, the control device 50 is activated, and even if the user does not operate the second input operation means 12 of the rice cooking unit 1, the control device 50 is operated by the thermistor 5A or another current sensor (not shown). A self-check for abnormalities in the internal components of the rice cooking unit 1 is started (SF2).

If there is no abnormality, the control device 50 knows that the rice cooking unit 1 is placed in the correct position, but the infrared signal transmitter / receiver 35 sends a predetermined infrared signal to the induction heating cooker 10. The transmission is transmitted to the transmission / reception unit 35. Then, the infrared signal for confirmation from the induction heating cooker 10 is received by the infrared signal transmission / reception unit 34 (SF3). In the first embodiment, the infrared signal is transmitted from the infrared signal transmission / reception unit 35 of the induction heating cooker 10 toward the rice cooking unit 1, so that the reverse is true in the ninth embodiment. The rice cooking operation may be started without receiving the confirmation infrared signal from the induction heating cooker 10 by the infrared signal transmitting / receiving unit 34.

After that, the first display screen 11A of the lid 1B is activated, and the second display screen 11B is not activated (SF4). This is because it is not necessary to activate and display the second display screen 11B because the weight measurement stage of rice is not yet performed, and it also saves energy.

In step SF4, the notification means 90 provides, for example, an audio guide saying "I will start cooking rice."
The control device 50 asks the user by text or voice whether or not it is necessary to retroactively notify the weight measurement history of rice through the first display screen 11A or the voice notification means 90V (SF5).

In response to this confirmation request, when the user wants to know the history information, an input key (also referred to as an "icon") specially displayed at this stage on the first display screen 11A or a second input Operate a history display instruction means (not shown) such as a push button type that is always provided in the operation means 12.

When such an operation is performed, step SF5 becomes “Yes”, and in the next step (SF6), the previous rice cooking stored in the storage means 50R of the control device 50 for collecting data of the rice weight measurement history. The measurement result up to the time is read out.

When the operation start switch 121 corresponding to the rice cooking switch 67 of the first embodiment is pressed, the voice notification means 90V or the voice notification means 70V, for example, "The weight measurement result of rice was 300 g. Since the appropriate amount of water was determined, rice cooking started. Perform a voice guide such as "I will" and start the rice cooking operation.

In the ninth embodiment, when the rice cooking is started by pressing such an operation start switch 121, the data of the rice weight measurement result (at the time of the latest measurement) performed immediately before that is stored in the control device 50 in chronological order. It is stored in the means 50R. Therefore, for example, the weight of rice that the user wants to know, such as the cumulative weight of the past month or week, the cumulative weight of the past 10 times, the average weight of one rice cooked in the past 10 times or one month, etc. Achievements can be notified. Since the control device 50 notifies the induction heating cooker 10 by an immediate infrared signal that the operation start switch 121 is pressed, the weight of the rice is as described above even with the voice notification means 70V on the induction heating cooker 10 side. It is possible to notify the measurement result and the notice of starting the rice cooking operation.

When the user touches the history display key 153 shown in FIG. 49, the control device 50 measures the rice measured during the past (at least one month or 30 times of cooking rice) rice cooking operation stored in the storage means 50R. Read the weight of.
The control device 50 collects the weight measurement values for the past 30 days or 31 days from the time when the history display key 153 is pressed by using the time information from the time measuring means (clock circuit) 50T for calculating the time. Further utilizing it, the average weight and the like for one week unit and the past 30 times are calculated and displayed on the first display screen 11A as the history display unit 154. The voice notification means 90V may be used for notification. For example, "The average weight of the past 10 times was 500 g", it is good to inform briefly. As for the number of times the rice is cooked, the number of times the rice is cooked by the operation of the operation start switch 121 is stored in the storage means 50R, and the data is used by the control device 50.

Next, the control device 50 activates the second display screen 11B (SF7). Then, the information of the measurement history of the weight of rice is displayed on the second display screen 11B (SF8). The second display screen 11B may not be activated and may be displayed on the already activated first display screen 11A.

Next, the control device 50 displays a display for confirming whether or not to subsequently cook rice on the first display screen 11A, and also performs the same notification on the voice notification means 90V (SF9).

When the user intends to cook rice by operating a predetermined input key or the like, a desired rice cooking menu can be set with the menu switch 65 as described in the first embodiment (SF11). Further, on the first display screen 11A, the menu at the time of the previous rice cooking is read out from the storage means 50R of the control device 50 and displayed. As described in the first embodiment, each time the menu switch 65 is pressed, the display of the menu display unit 62 is switched to “risotto”, “porridge”, and “cooking”. Further, the information regarding the rice cooking menu set by the menu switch 65 is input to the control device 50.

The type of rice may be displayed. For example, to display "white rice" and change it, the switch 63 (see FIG. 7) may be pressed. If you press it once, the selection frame will advance to the next candidate, such as "washless rice" and if you press it twice, "germinated brown rice", and the original "white rice" will be patrolled, so you can select the desired rice type.

Similarly, information on how much rice is cooked, that is, information on the hardness of rice, can be sequentially read out and corrected (SF12). Furthermore, information on rice brands can be read out and corrected (SF13).

At this stage, the control device 50 indicates that the weight of the rice can be measured. Also, the voice notification means 90V is used for notification. The fact that the weight of rice can be measured may be displayed on the second display screen 11B or may be displayed on the first display screen 11A. It may be displayed on both sides.

Then, in the case of "Yes" in the step (SF14) of asking the user whether to measure the weight of rice, the process proceeds to the rice weight measurement and notification step shown in FIG.

The operation step of FIG. 51 is similar to the operation step shown in FIG. 21 of the first embodiment.
In the first step SF15, the voice notification means 90V notifies that the mode is automatically switched to the voice input mode. This audio guide includes an explanation that only rice is put in the inner pot 3 and that the lid 1B is left open to measure the weight. Then, it automatically switches to the voice input mode (SF16).

Next, the notification means 90 performs a voice guide asking again whether or not a mode for measuring the weight is desired (SF17). Depending on the user who is proficient in cooking rice, the amount of water may be adjusted to an appropriate level by experience, and if you do not want to measure with the rice cooking unit 1, a predetermined word such as "do not measure" by voice. Speaking of, the voice is input through the microphone provided at an appropriate place on the lid 1B, and the process proceeds to the normal step SF28 at once. At the same time, the voice input mode is automatically canceled.

In step SF17, when the user utters that he / she desires the weight measurement mode, the control device 50 determines whether or not the lid 1B is open (SF18). This determination is performed by the control device 50 determining the output from the lid opening sensor 93. If the lid 1B is not opened, it may be guided by voice so that it is opened by the voice notification means 90V.

In the next step SF19, when the user utters "measurement start", the control device 50 calculates the weight of the entire rice cooking unit 1 from the measured values of the four weight sensors 4 by the weight measuring means 94 (SF20). ).

Then, the measured result is notified by the voice notification means 90V (SF21). At the same time, it is also displayed on the second display screen 11B.
Then, the amount of water corresponding to the weight is calculated, and the result is notified by the voice notification means 90V and the second display screen 11B (SF22). Upon hearing this notification, when the user injects water into the inner pot 3 of the rice cooking unit 1 with the lid 1B open, the weight measuring means 94 determines the proper weight and the current weight in the process of injecting water. The divergence is calculated and notified by voice (SF23).

When the control device 50 determines that the water level has finally reached the appropriate level through the process of injecting water or taking out excess water (SF25), a voice notification is given that the voice input mode is automatically canceled. The means 90V and the second display screen 11B are used for notification (SF26), and the process proceeds to step SF27. That is, when the amount, type, brand, amount of water, etc. of rice are finally adjusted, the voice notification means 90V and the second display screen 11B notify that the appropriate amount of water has been measured (SF27).

Next, FIG. 52 will be described. In step SF28 shown in FIG. 52, the user is requested to confirm whether or not the input in the second input operation means 12 is completed.
It is recommended by voice to press the operation start switch 121 to start the rice cooking operation. For example, the voice notification means 90V provides a voice guide such as "Start cooking rice with white rice. If you like, press the rice cooking start button."

Finally, when the operation start switch 121 was pressed at the stage where the amount, type, brand, amount of water, etc. of rice were adjusted, the voice notification means 90V, for example, "The weight measurement result of rice was 300 g. Appropriate amount of water. Since it has been judged, rice cooking will start. With white rice, how to cook ..., the estimated time to finish cooking is 18:50. " Further, the second display screen 11B ends (turns off) the display operation (SF29).

When about 10 seconds have passed since the operation start switch 121 was pressed, the control device 50 estimates that there is no cancel operation by the user, and transmits a predetermined "rice cooking command signal" to the induction heating cooker 10. The command signal in this case is transmitted from the infrared signal transmission / reception unit 35 to the infrared signal transmission / reception unit 34 side (SF30).
The "rice cooking command signal" here is not a control program that determines the details of the rice cooking process. If basic data indicating the amount, type, brand, etc. of rice is sent, the heating coil for cooking rice is used based on the computer software (rice cooking control program) stored in the storage means 80R of the main control device 80. 14 energization controls can be executed. However, the control program itself that determines the details of the rice cooking process may be directly transmitted.

Next, it is determined whether or not the preheating process is completed (SF31), and if it is determined that the preheating process is completed, the process proceeds to the next step (SF32), and the infrared signal transmission / reception unit 35 indicates that the preheating process is completed. The signal is transmitted in infrared.

Next, it is determined whether or not the rice cooking process is completed (SF33), and if it is determined that the rice cooking process is completed, the process proceeds to the next step, and the infrared signal transmission / reception unit 35 indicates that the rice cooking process is completed. Is transmitted (SF34).

Next, it is determined whether or not the unevenness process is completed (SF35), and if it is determined that the unevenness process is completed, the process proceeds to the next step, and the infrared signal transmitter / receiver 35 indicates that the unevenness process is completed. Is transmitted by infrared rays (SF36).

Then, the notification means 90 on the rice cooking unit 1 side displays the end of rice cooking (end of unevenness) on the first display screen 11A, and the notification means 90 also notifies by voice that the rice has been cooked and the unevenness process has been completed. Is done (SF37). The above steps complete a series of rice cooking operations.

Also in the ninth embodiment, basically the same effect as that of the eighth embodiment can be expected. Although the power transmission coil 17 is on the leeward side when viewed from the heating coil 14, the cooling air flows directly from the cooling fan 13 instead of the air whose temperature has risen by cooling the heating coil 14 from the cooling fan 13. , There is no problem with the cooling effect.

The history display key 153 can instruct the control device 50 to retroactively read out the measurement result of the weight of rice in the past for a certain period of time, but the key 153 is held down (for example, pressed for 5 seconds or longer). ), This key disappears immediately, and the record of past weight measurement results is deleted.

Also in the ninth embodiment, the wireless communication module (wireless communication unit) 26 is installed in the space 146 on the front side of the partition wall 47 of the induction heating cooker 10. This enables wireless communication with local network equipment (including power command devices) installed in the home, and communicates with remote information communication terminal equipment 115 and specific external organizations 113, etc. via the Internet line. Information can be exchanged between. It can also receive a remote control signal for the rice cooking unit 1.

In the ninth embodiment, since the rice cooking unit 1 is provided with the weight measuring means 94, among the rice weight data acquired by the control device 50, the weight data measured immediately before the rice cooking start command is actually cooked rice. It is presumed that the data has been generated, and the data is transmitted from the infrared signal transmission / reception unit 35 to the induction heating cooker 10 side. This transmission is performed when the rice cooking unit 1 is first activated by the induction heating cooker 10, that is, when the data up to the previous time is transmitted each time the rice is cooked, or when the rice cooking process is started. Etc., any method may be used.

The main control device 80 stores the weight measurement data transmitted from the rice cooking unit 1 in the storage means 80R in the order of reception, and transmits the weight measurement data to the power command device (not shown) via the wireless communication unit 26. .. Alternatively, it is transmitted to an information communication terminal device 115 at a remote location, a specific external organization 113, or the like through a communication network 114 such as an Internet line via a local network facility.
By acquiring such weight measurement data by the user or a related person, it is possible to grasp the amount of rice consumed by the electric rice cooker 100 in this household.

When this weight measurement data is transmitted to an external organization (for example, a rice sales company) 113 outside the living space HA, if the identification information of the electric rice cooker 100 is also transmitted at the same time, the outside of the rice sales company or the like The institution 113 can grasp the necessity of supplying rice, the delivery time, and the like. On the contrary, the external organization 113 also provides rice delivery information, new brand rice information, and the like, which can improve the convenience of the user.

Since the rice cooking unit 1 is provided with a wireless communication unit (input / output means) 91 that performs short-range wireless communication (NFC) on the lid 1B, the information communication terminal device 115 having an NFC function is approached or contacted. Then, communication can be performed and the weight measurement data of rice stored in the rice cooking unit 1 can be directly acquired.

Summary of Embodiment 9.
As described above, the electric rice cooker 100 of the ninth embodiment has the configuration of the second invention.
That is, the induction heating cooker 10 provided with the induction heating coil 14 and the first input operating means 20 located on the front side of the heating coil 14 and inputting the induction heating conditions.
A rice cooking unit 1 including an inner pot 3 that houses the rice to be cooked and is heated by the heating coil 14 and a second input operating means 12 for inputting rice cooking conditions is provided.
The induction heating cooker 10 includes an infrared communication unit 34 for exchanging information necessary for controlling rice cooking between the cooling fan 13 that supplies cooling air to the heating coil 14 and the rice cooking unit 1. A transmission coil 17 that supplies electric power to the rice cooking unit 1 in a non-contact manner is provided.
A partition wall 47 for partitioning the internal space of the induction heating cooker 10 is provided, and the partition wall 47 partitions the first air passage SH1 for guiding the cooling air from the cooling fan 13 to the heating coil 14.
The infrared communication unit 34 has a configuration characterized in that it is arranged on the opposite side of the heating coil 14 with the partition wall 47 interposed therebetween.

According to the electric rice cooker 100 shown in the ninth embodiment, the heat of the heating coil 14 having a relatively high temperature is released to the outside of the main body case 10A by the cooling air from the cooling fan 13.
Since the infrared communication unit 34 is arranged on the opposite side of the partition wall 47 from the heating coil 14, there is almost no possibility that heat radiation from the heating coil 14 is transmitted, so that the cooling fan 13 positively uses the cooling fan 13. Even if it is not cooled continuously, its temperature rise is suppressed and it does not become overheated.

According to the electric rice cooker having this configuration, it is possible to prevent overheating of the infrared communication unit 34 arranged inside the induction heating cooker 10.

As described above, in the ninth embodiment, the infrared communication unit 34 is arranged on the opposite side of the heating coil 14 with the partition wall 47 interposed therebetween, and on the opposite side of the heating coil 14 with the cooling fan 13 interposed therebetween. Therefore, the suppression of temperature rise is even higher.

Further, the ninth embodiment is an electric rice cooker adopting the configuration of the fourth invention.
That is, the electric rice cooker of the ninth embodiment is
An induction heating cooker 10 having an induction heating coil 14 and a first input operating means 20 located in front of the heating coil 14 for inputting induction heating conditions.
A rice cooking unit 1 including an inner pot 3 that houses the rice to be cooked and is heated by the heating coil 14 and a second input operating means 12 for inputting rice cooking conditions is provided.
In the induction heating cooker 10, right heating portions (heating ports) and left heating portions (heating ports) for heating the object to be heated are arranged on the left and right sides of the upper surface of the surface with the center line CL1 in the front-rear direction sandwiched.
The induction heating cooker 10 exchanges information necessary for controlling rice cooking between the cooling fan 13 that supplies cooling air to the heating coil 14 and the induction heating cooker 10 and the rice cooking unit 1. An infrared communication unit 34 for this purpose and a transmission coil 17 for supplying power to the rice cooking unit 1 in a non-contact manner are provided.
An air passage (first air passage SH1) for guiding the cooling air from the cooling fan 13 to the heating coil 14 is formed.
On the upper surface of the induction heating cooker 10, a right operation unit 20R and a left operation unit 20L for inputting heating conditions for each heating unit are arranged on both left and right sides of the center line CL1.
Further, an operation button 150A, which is an operation surface of the main power switch 150, is arranged on the upper surface of the induction heating cooker 10.
When the rice cooking unit 1 is placed at a predetermined position of either the right heating unit or the left heating unit, either the right operation unit 20R or the left operation unit 20L dedicated to the heating unit is moved upward. It has a flat size that covers it from
When the rice cooking unit 1 is placed at a predetermined position of either the right heating unit or the left heating unit, the operation surface (operation button 150A) of the main power switch 150 is exposed. It is a configuration.

According to the electric rice cooker of the fourth invention, it is possible to prevent overheating of the infrared communication unit 34 arranged in the induction heating cooker.

Further, the right heating unit and the left heating unit can be used for cooking, respectively, and even when the rice cooking unit 1 is placed directly above either the right heating unit or the left heating unit, the operation button 150A of the main power switch is exposed. Therefore, cooking can be performed using the heating unit (heating port) and the operation unit on the side where the rice cooking unit 1 is not placed. Therefore, the convenience of the user is high.

Embodiment 10.
FIG. 53 relates to a tenth embodiment of the present invention, and is a vertical sectional view of an electric rice cooker. In the rice cooking unit 1, only the lower part is shown. The same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

In the electric rice cooker 100 according to the tenth embodiment, the bottom structure of the rice cooking unit 1 is particularly changed.
In FIG. 53, 39A is a first bottom plate integrally formed with the main body case 10A constituting the outer shell of the rice cooking unit 1, and is made of heat-resistant plastic or the like having low thermal conductivity.
39B is a second bottom plate fixed to the lower surface of the first bottom plate 39A so as to cover the lower surface of the first bottom plate 39A, and is made of heat-resistant plastic or the like having low thermal conductivity.

In FIG. 53, 171 is a large number of convex portions scattered on the lower surface of the second bottom plate 39B of the rice cooking unit 1, and may be formed by integral molding at the time of molding the second bottom plate 39B itself. Alternatively, another member may be adhered or welded to the second bottom plate 39B. The interval for forming the convex portion 171 may be uniform over the entire lower surface of the second bottom plate 39B, or may be provided non-uniformly. The height of the convex portion 171 is about several mm. As shown in FIG. 53, the vertical cross-sectional shape of the convex portion 171 may be trapezoidal or semicircular. The convex portion 171 is made of, for example, a heat-resistant plastic having a low thermal conductivity. Further, it may be made of a rigid material or may be formed of elastic silicone rubber.

In FIG. 53, G2 is a facing distance formed between the upper surface of the top plate 22 of the induction heating cooker 10 and the facing surface of the second bottom plate 39B of the rice cooking unit 1, and the height is about several mm. Is. The facing interval is formed by the convex portion 171 hitting the upper surface of the top plate 22.

The bottom plate 39 described in the first embodiment has a single-sheet structure. In the tenth embodiment, the first bottom plate 39A and the second bottom plate 39B have a two-sheet structure. The SX is a closed space formed between the first bottom plate 39A and the second bottom plate 39B, and is an air layer that exhibits heat insulating performance in order to lower the thermal conductivity. When the rice cooking is completed, the rice cooking unit 1 has an inner pot 3 heated to a high temperature, so that the temperature of the first bottom plate 39A rises due to the heat of the inner pot 3, but the temperature of the first bottom plate 39A rises below it, but the second bottom plate 39B is below it. Therefore, it is possible to suppress the internal temperature of the rice cooking unit 1 from being transmitted from the bottom to the outside. Therefore, even if the rice cooking unit 1 is placed on kitchen furniture such as a dining table immediately after the end of the rice cooking process or immediately after the end of the unevenness process, both the first bottom plate 39A and the second bottom plate 39B are kitchen furniture. It is possible to avoid the occurrence of problems such as thermal deformation without directly touching the kitchen. Further, since the amount of heat radiated from the inner pot 3 can be suppressed, the heat retention time of the rice can be lengthened.

S is a gap formed between the upper surface of the induction heating cooker 10 and the facing surface of the second bottom plate 39B of the rice cooking unit 1. In the first embodiment, the void S does not exist at a position directly above the top plate 22, and is formed only around the top plate 22.

In the tenth embodiment, the void S is formed above the induction heating cooker 10 including the position directly above the top plate 22. The height of the gap is about 3 mm to 5 mm at a position directly above the top plate 22, and at a position avoiding the outer peripheral portion, that is, a position directly above the top plate 22, as described in the first embodiment. It is about 10 mm to 15 mm. Since the power receiving coil 7 can be made as close as possible to the power transmission coil 17 of the induction heating cooker 10 to increase the power receiving efficiency, only the power receiving coil 7 is covered with an electrically insulating cover, and this part is covered with an electrically insulating cover. Only protrudes downward.

As shown by the broken line in FIG. 53, the bottom portion of the inner pot 3 penetrates the first bottom plate 39A and reaches the vicinity of the upper surface of the second bottom plate 39B below the first bottom plate 39A. Such a structure is adopted in order to bring the bottom portion of the inner pot 3 as close as possible to the heating coil 14.

Summary of Embodiment 10.
As is clear from the above description, the tenth embodiment discloses an electric rice cooker having the following configuration.
That is, the tenth embodiment
An induction heating cooker 10 including an induction heating coil 14 and a first input operating means 20 located on the front side of the heating coil 14 for inputting heating conditions.
A rice cooking unit 1 including an inner pot 3 that houses the rice to be cooked and is heated by the heating coil 14 and a second input operating means 12 for inputting rice cooking conditions is provided.
With the rice cooking unit 1 placed on the induction heating cooker 10, the rice cooking unit 1 covers the upper part of the first input operating means 20.
Inside the induction heating cooker 10, a cooling fan 13 that supplies cooling air for cooling the heating coil 14 and between the induction heating cooker 10 and the rice cooking unit 1 are used for cooking rice. An infrared communication unit 34 for transmitting an infrared signal including control information and a transmission coil 17 for supplying power to the power receiving coil 7 provided in the rice cooking unit 1 in a non-contact manner are provided.
An electric rice cooker in which the infrared communication unit 34 is provided on the upstream side of the flow of the cooling air and the heating coil 14 is arranged on the downstream side in the air passage SH1 of the cooling air from the cooling fan 13 to the heating coil 14. Met.
Further, the bottom surface of the rice cooking unit 1 has a two-layer structure of a first bottom plate 39A and a second bottom plate arranged below the first bottom plate 39A.

Therefore, according to the tenth embodiment, overheating of the infrared signal transmission / reception unit 34 can be prevented. Further, it can be expected that the heat dissipation property at the bottom portion of the rice cooking unit 1 is suppressed and the heat retention property of the inner pot 3 is enhanced.

Embodiment 11.
54 to 56 relate to the eleventh embodiment of the present invention. FIG. 54 is an overall plan view showing the positional relationship between the built-in induction heating cooker and the electric rice cooker mounted on the built-in induction cooker. FIG. 55 is a vertical cross-sectional view taken along the line X1-X1 of FIG. 54. FIG. 55 is a vertical sectional view taken along line X2-X2 of FIG. 54. The same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

In the electric rice cooker 100 according to the eleventh embodiment, the internal structure of the front portion of the induction heating cooker 10 is particularly changed. Moreover, the arrangement of the cooling fan 13 is also changed.
Since the induction heating cooker 10 has induction heating portions on the left and right sides of the left and right center lines CL1, basically the same internal structure is provided on the left and right sides from the center line CL1. However, the main control device 80, the power transmission coil 17, and the infrared signal transmission / reception unit (infrared communication unit) 34 are installed only in the space on the right side.

In FIG. 54, the first input operation means 20 is provided with a display means 70D composed of a liquid crystal display screen, a light emitting element (LED: a light emitting diode), and the like, and an input result by the first input operation means 20 and the like. Is displayed at any time.

In FIG. 54, 170 is a guide plate provided so as to narrow the air passage on the suction port side immediately before the cooling fan 13. In FIGS. 54 to 56, reference numeral 34 denotes an infrared signal transmitting / receiving unit (infrared communication unit) forming a part of the reference position determining means 33, which is arranged at a position behind the first input operating means 20. There is. Two infrared signal transmission / reception units 34 are installed side by side instead of one, one for transmitting infrared signals and the other at least one for receiving infrared signals.

In FIG. 55, 36B is a first signal processing unit that processes an infrared signal for the infrared signal transmitting / receiving unit (infrared communication unit) 34, and is installed on the support substrate 40.
Reference numeral 13 denotes a cooling fan arranged at a position near the rear of the support substrate 40, and as can be seen from FIG. 55, the cooling fan 13 is installed so that the rotation axis supporting the center of the rotary blade portion is horizontal. Therefore, as shown by the broken line arrow in FIG. 55, the cooling fan 13 sucks the cooling air from the left lateral direction of FIG. 55 and blows it out in the right lateral direction. In other words, the cooling fan 13 introduces air from the front of the main body case 10A having a hollow box shape and supplies the air to the rear.

Reference numeral 172 is an intake port composed of a large number of small holes or narrow slit-shaped holes, which are concentrated on the right end portion, the central portion, and the left end portion of the front wall surface 10F of the main body case 10A, respectively.

In the first input operation means 20, operation units 41A of a plurality of pressing electronic switches 41 are arranged in a horizontal row at regular intervals. Further, as shown in FIG. 54, the operation button 150A of the main power switch 150 is arranged at the position of the left and right center lines CL1.

When the operation unit 41A at the top of each electronic switch 41 is pressed, the internal contacts are closed and a predetermined signal can be generated. Even in the main power switch 150, when the operation button 150A is pressed, the internal contact is closed and a predetermined signal can be generated.

Reference numeral 174 is a thin protective plate made of a highly curable plastic material, which covers the operating portions 41A and 173A in a sealed state to prevent water from entering from above. When the protective sheet 43 is pressed by the user's finger, the operation units 41A and 173A move downward by a minute dimension, and the internal contacts of the electronic switch 41 and the main power switch 173 are closed.

An opening (not shown) is formed on the upper surface of the main body case 10A corresponding to the positions of the operation unit 41A and the operation button 150A, and the opening is covered with the protective plate 174 from above. The through hole is for allowing the operation unit 41A to move up and down.

Reference numerals 177 are two communication windows provided near the operation buttons 150A of the main power switch 150 on the left and right sides thereof. This window penetrates the protective plate 174. Two infrared light emitting elements 178 are installed below the window 177. From the infrared light emitting element 178, an infrared (light) command signal transmitted by a command of the control device 80 is transmitted through the communication window 177. The window 177 is covered with a lid through which infrared rays are transmitted in order to prevent foreign matter and water from entering. Further, 10N is a small hole formed in the main body case 10A.

The infrared signal radiated from the infrared light emitting element 178 controls the operation of an exhaust device (not shown) such as a ventilation fan, a ceiling ventilation device, or a range hood fan installed in a kitchen or the like. As the infrared light emitting element (light emitting diode) 178 in this field, for example, one having a wavelength range near 940 nanometers (nm) is used, but it is generally vulnerable to heat and deterioration of the element starts at 80 ° C. or higher. Therefore, there is a problem that the life is shortened when used in such a high temperature atmosphere.

Reference numeral 42 denotes a circuit board on which each electronic switch 41 and the main power switch 173 are mounted. The 176 has one large flat area that supports the circuit board 42 and the support board 40 on which the first signal processing unit 36A for the infrared signal transmission / reception unit (infrared communication unit) 34 is mounted. It is a control board. Between the control board 176 and the circuit board 42, an air passage through which the cooling air passes is formed by a plurality of legs 42A that also serve as spacers.

The control board 176 and the support board 40 form a part of an air passage (intake air passage KU1) through which cooling air passes by a plurality of legs 40A that also serve as spacers.
In the front internal space of the main body case 10A, as shown in FIGS. 55 and 56, a first intake passage KU1 leading to the cooling fan 13 is formed above the control board 176, and below the control board 176. A second intake passage KU2 is formed in the above, and the end portions of these upper and lower two layers of intake passages are connected to the suction port of the cooling fan 13.

Reference numeral 180 denotes a packing for sealing, which is made of silicon rubber or the like having excellent elasticity and heat resistance. This packing prevents water or the like from entering the inside of the main body case 10A from the outer peripheral end portion of the top plate 22.

With the above configuration, when the induction heating cooker 10 is operated according to the eleventh embodiment, the cooling fan 13 is operated. Therefore, air is introduced from the intake ports 172 formed at the right end, the center, and the left end of the main body case 10A, and the air emits infrared rays as shown by the broken line arrows in FIGS. 55 and 56. It passes around the element 178 and additionally reaches the cooling fan 13 around the infrared signal transmission / reception unit 34.

Therefore, even when the rice cooking unit 1 is placed on the induction heating cooker 10 to cook rice, the display means 70D composed of the liquid crystal display screen, the light emitting element, and the like in the first input operation means 20 can be used. It is possible to prevent overheating of important parts such as the infrared signal transmission / reception unit 34 and the infrared light emitting element 178.

Summary of Embodiment 11 As is clear from the above description, Embodiment 11 discloses an electric rice cooker having the following configuration.
That is, the eleventh embodiment
An induction heating cooker 10 including an induction heating coil 14 and a first input operating means 20 located on the front side of the heating coil 14 for inputting heating conditions.
A rice cooking unit 1 including an inner pot 3 that houses the rice to be cooked and is heated by the heating coil 14 and a second input operating means 12 for inputting rice cooking conditions is provided.
With the rice cooking unit 1 placed on the induction heating cooker 10, the rice cooking unit 1 covers the upper part of the first input operating means 20.
Inside the induction heating cooker 10, a cooling fan 13 that supplies cooling air for cooling the heating coil 14 and between the induction heating cooker 10 and the rice cooking unit 1 are used for cooking rice. An infrared communication unit 34 for transmitting an infrared signal including control information and a transmission coil 17 for supplying power to the power receiving coil 7 provided in the rice cooking unit 1 in a non-contact manner are provided.
The infrared communication unit 34 is provided in the (first) intake passage KU1 from the intake port 172 provided in the main body case 10A of the induction heating cooker 10 to the cooling fan 13, and the air passage from the cooling fan 13 to the exhaust port 148. It was an electric rice cooker in which the heating coil 14 was arranged in SH1.
Further, an infrared light emitting element 178 that emits an infrared signal for ventilation is arranged inside the induction heating cooker 10.
Then, the infrared light emitting element 178 and the infrared communication unit 34 are located upstream of the cooling air flow in the cooling air blowing path SH1 from the cooling fan 13 to the heating coil 14. Was placed in.

Further, the induction heating cooker 10 of the eleventh embodiment has heating ports arranged on both sides of the left and right center lines CL1 of the main body case 10A.
The right operation unit and the left operation unit of the first input operation means 20 located on the front side of the heating coil 14 and inputting the heating conditions are arranged on both sides of the left and right center lines CL1. ,
The operation button 150A of the main power switch 150 is arranged at a position intersecting the left and right center lines CL1.
The infrared signal of the infrared light emitting element 178 that emits an operation command signal to an external exhaust device or the like is transmitted through communication windows 177 formed at a total of two locations on both sides of the left and right center lines CL1.
Further, the infrared light emitting element 178 is arranged in the intake passage KU1 of the cooling fan 13 that supplies the cooling air to the heating coil 14, and is cooled by the cooling air flowing through the intake passage KU1.
When the rice cooking unit 1 is placed above the heating port on the right side, which is a predetermined position of the induction heating cooker 10, the right operation unit 20R of the first input operation means 20 is covered with the rice cooking unit 1. However, the operation unit 173A, the left operation unit 20L, and the communication window 177 of the main power switch 173 are not covered.

Therefore, according to the eleventh embodiment, even when the rice cooking unit 1 is placed and used at a predetermined position of the induction heating cooker 10, cooking using the heating port on the left side can be performed without any trouble, which impairs convenience. There is no such thing.

Other embodiments and modifications.
In the first and second embodiments, the reference position determination means 33 is composed of the infrared signal transmission / reception unit 34 on the induction heating cooker 10 side and the infrared signal transmission / reception unit 35 on the rice cooking unit 1 side. Then, the infrared signal is first transmitted from the induction heating cooker 10 side, the response of the infrared signal from the rice cooking unit 1 side is confirmed, and it is determined whether or not the placement position of the rice cooking unit 1 is in the reference position. Although it was a method, it is not necessary to adopt a form in which information is transmitted by infrared signals separately from both directions in this way. For example, an infrared signal may be first transmitted from the induction heating cooker 10 side, and the state of the reflected light may be determined on the induction heating cooker 10 side.

In the first to eleventh embodiments, a basic rice cooking control operation program (computer software) capable of executing the rice cooking operation is stored in the storage means 50R of the control device 50 on the rice cooking unit 1 side, and the operation program (computer software) for executing the rice cooking operation is used. Although the rice was cooked, it is not always necessary to prepare an operation program that can autonomously execute the rice cooking operation on the rice cooking unit side. In that case, a rice cooking control operation program (computer software) is stored in the main control device 80 on the induction heating cooker 10 side, and the induction heating coil 14 is controlled by using this operation program to cook rice (preheat). , Rice cooking, unevenness) In order to execute the operation and judge the progress of the rice cooking process, control data such as the temperature of the inner pot 3 may be acquired from the rice cooking unit 1 side at any time by an infrared signal.

Further, as shown in the first and second embodiments, the rice cooking unit is a combination of a reed switch 31 and a permanent magnet 30 installed at a predetermined position, an IC tag 103 and a reader (IC tag information reading unit) 104. The installation position of 1 may be confirmed, and only the information transmission between the rice cooking unit 1 and the induction heating cooker 10 may be performed by an infrared signal. Since the induction heating cooker 10 uses high-frequency power to generate an alternating magnetic field, there is a concern that it may affect wireless communication as electrical noise, and in this respect as well, communication using infrared signals is advantageous.

Further, in the first to eleventh embodiments, the window 37 is formed in the portion where the rice cooking unit 1 and the induction heating cooker 10 overlap, and in the portion closest to each other, and the infrared signal is transmitted. It is expected that communication can be realized in close contact or in a close environment without being affected by ambient light such as visible light or sunlight, and signal transmission can be ensured.
The first input operating means 20 may be provided with an infrared transmission hole, and the infrared signal may be transmitted to the rice cooking unit 1 through the transmission hole. In this case, it is preferable to arrange the transparent holes while avoiding the button (key) portion or the touch switch portion that the user presses.

Further, in the first to seventh embodiments, the induction heating cooker 10 has the rear vertical portion 16, so that when the cooking utensils such as various ordinary pots and frying pans are induced to be heated, the rear vertical portion 16 is on the rear side. It was configured to prevent those cooking utensils from falling backwards. However, the rear vertical portion 16 is not essential for the practice of the present invention. That is, the induction heating cooker 10 may have an outer shape in which the entire upper surface is flat (see embodiments 8 and 9).

The electric rice cooker and the cooking system according to the present invention can be widely used not only in the kitchen of a general house but also in a kitchen such as a public facility or a store.

1 Rice cooking unit 1A Main body 1B Lid 1F Front wall surface 1P Protrusion 2 Leg 3 Inner pot 4 Weight sensor 4S Strain sensor 5 Inner pot temperature detection means 5A Thermista 5B Infrared temperature sensor 6 Power supply means 7 Power receiving coil 8 Lid open / close button Body heating means 9B Inner pot side heating means 10 Induction heating cooker 10A Main body case 10F Front wall surface 10N Small hole 11 Display means 11A First display screen 11B Second display screen 12 Second input operation means 12P Pressing type input means 12T Touch type input means 12V switch 13 Cooling fan 13C Fan case 13F Fan (rotary blade)
13M Fan motor 14 Induction heating coil 15 Outside air temperature detection means 16 Rear vertical part 17 Power transmission coil 18 Operation part 18A Operation key 19 Magnetic shield plate 19A Rear end part 19B Rear end part 20 First input operation means 20L Left operation part 20R Right operation Part 21 Projection (convex)
22 Top plate 22A Inclined part 22L, 22R Step part 22T Peripheral part 23 Inner lid 24 Seal packing 25 Inner body part 26 Wireless communication module (wireless communication part)
29 Window 30 Permanent magnet 31 Placement detection sensor (reed switch)
32 Support board 33, 33A, 33B Reference position determination means 34 Infrared signal transmitter / receiver 34A Infrared signal transmitter 34B Infrared signal receiver 35 Infrared signal transmitter / receiver 36A First signal processing unit 36B Second signal processing unit 37, 38 Window 39 Bottom plate 39A 1st bottom plate 39B 2nd bottom plate 40 Support board 41 Electronic switch 41A Operation part 42 Circuit board 42A Leg 43 Protective sheet 44 Through hole 45 Support frame 46 Through hole 47 Partition wall 47E Rear end 50 Control device 50R Storage means 50T Measuring means 60 Rice type display 61 Hardness display 62 Menu display 63 Rice type switch 64 Hardness switch 65 Menu switch 66 Off / heat retention switch 67 Rice cooking switch 68 Reservation switch 69 Time switch 70 Notification means 70A, 70D Display means 70V voice synthesizer 71 Commercial power supply 72 Power supply unit 73 Inverter circuit 74 Top plate temperature detection means 74A Detection circuit 74C Signal line 74S Thermistor (temperature detection element)
75 Heat retention switch 76 Voice navigation switch 77 Power saving switch 78 Health information display switch 80 Main controller 80R Storage means 80T Timekeeping means 81 Power priority information 82 Boiling process display information 90 Notification means 90V Voice notification means 91 Wireless communication unit (input / output) means)
93 Lid open sensor 94 Weight measuring means 95 Secondary battery (power supply unit)
96 Partition plate 96A Through hole 97 Room 98 Vent 99 Wind direction plate 100 Electric rice cooker 101 Power plug 102 Power cord 103 IC tag 104 Reader (IC tag information reader)
105 Support leg 106 Protrusion (fitting part)
108 Lower space 110 Electric energy meter 111 Power line 112 Router 113 External engine 114 Communication network 115 Information communication terminal equipment 120A to 120D, 120R Touch type key 121 Operation start switch 122 Steam discharger 123 Recession 124 Lid 125 Hinge shaft 126 Steam discharge Hole 127 Water injection port 128 Weighing instruction key 129 Water amount display 129A Indicator (figure)
130 Cooling fan 140 Coil base 141 Through hole 142 Magnetic shield plate 143 Circuit board 144 Support plate 145 Intake port 146 Space 147 Support plate 148 Exhaust port 150 Main power switch 150A Operation button 151 Operation unit support frame 153 History display key 154 History display unit 170 Guide plate 171 Convex part 172 Intake port 174 Protective plate 176 Control board 177 Communication window 178 Infrared light emitting element 180 Packing 194 Weight measuring means 200 Integrated management device (power command device)
AD power strip BK breaker H facing distance HA living space HZ maximum outer peripheral range KU1 first intake passage KU2 second intake passage S gap SH1 first air passage SH2 second air passage SS gap SX closed space G1 facing distance.

Claims (39)

An induction heating cooker provided with a heating coil and a first input operating means for inputting heating conditions of the heating coil.
It is provided with an inner pot that houses the rice to be cooked and is heated by the heating coil, and a rice cooking unit provided with a second input operating means for inputting rice cooking conditions.
Inside the induction heating cooker, a cooling fan that supplies cooling air for cooling the heating coil, and control information for cooking rice between the induction heating cooker and the rice cooking unit are included. An infrared communication unit for transmitting infrared signals and an infrared communication unit are provided.
Inside the induction heating cooker, a first air passage and a second air passage into which the cooling air from the cooling fan is branched and introduced are provided, respectively.
The first air passage extends from the cooling fan to the outside of the induction heating cooker via the heating coil.
The second air passage is separated from the first air passage by a partition wall extending in the vertical direction with a plastic material, and the cooling of the first air passage supplied to the heating coil portion is performed. The cooling air from the cooling fan, which is different from the air, is directly introduced.
An electric rice cooker characterized in that the infrared communication unit is arranged in the second air passage. An induction heating cooker provided with a heating coil and a first input operating means for inputting heating conditions of the heating coil.
It is provided with an inner pot that houses the rice to be cooked and is heated by the heating coil, and a rice cooking unit provided with a second input operating means for inputting rice cooking conditions.
The induction heating cooker is provided with a cooling fan that supplies cooling air to the heating coil and an infrared communication unit for exchanging information necessary for controlling rice cooking between the rice cooking unit.
The heating coil is provided at the center of the left and right sides of the induction heating cooker.
The first input operating means is arranged at the left and right center portions of the induction heating cooker and at the front end portion.
A partition wall made of a plastic material extending from the bottom to the ceiling of the internal space of the induction heating cooker is provided between the heating coil and the first input operating means.
The partition wall partitions the outside of the first air passage that guides the cooling air from the cooling fan to the heating coil, and at the same time.
In front of the first air passage, a second air passage into which the cooling air from the cooling fan is introduced is formed on the outside of the partition wall.
An electric rice cooker characterized in that the infrared communication unit is arranged at a position behind the first input operating means and facing the second air passage. An induction heating cooker provided with a heating coil and a first input operating means for inputting heating conditions of the heating coil.
It is provided with an inner pot that houses the rice to be cooked and is heated by the heating coil, and a rice cooking unit provided with a second input operating means for inputting rice cooking conditions.
The induction heating cooker is provided with a cooling fan that supplies cooling air to the heating coil and an infrared communication unit for exchanging information necessary for controlling rice cooking between the rice cooking unit.
Inside the induction heating cooker, a first air passage and a second air passage into which the cooling air from the cooling fan is branched and introduced are provided, respectively.
The first air passage extends from the cooling fan to the outside of the induction heating cooker via the heating coil.
The second air passage is separated from the first air passage by a partition wall extending in the vertical direction with a plastic material, and the cooling of the first air passage supplied to the heating coil portion is performed. The cooling air from the cooling fan, which is different from the air, is directly introduced.
The partition wall also serves as a magnetic shield for the heating coil.
An electric rice cooker characterized in that the infrared communication unit is arranged in the second air passage. An induction heating cooker provided with a heating coil and a first input operating means for inputting an induction heating condition located on the front side of the heating coil.
It is provided with an inner pot that houses the rice to be cooked and is heated by the heating coil, and a rice cooking unit provided with a second input operating means for inputting rice cooking conditions.
In the induction heating cooker, a right heating part and a left heating part for heating an object to be heated are arranged on both left and right sides of the upper surface with a center line in the front-rear direction.
The induction heating cooker includes a cooling fan that supplies cooling air to the heating coil, and an infrared communication unit for exchanging information necessary for controlling rice cooking between the induction heating cooker and the rice cooking unit. And, respectively,
In order to guide the cooling air from the cooling fan to the heating coil, an air passage for cooling the infrared communication unit and the power transmission coil for supplying electric power to the induction heating cooker is formed.
On the upper surface of the induction heating cooker, a right operation unit and a left operation unit for inputting heating conditions for each heating unit are arranged on both left and right sides of the center line.
Further, an operation surface of the main power switch is arranged on the upper surface of the induction heating cooker.
When the rice cooking unit is placed at a predetermined position of either the right heating unit or the left heating unit, the rice cooking unit is flat so as to cover the right heating unit or the left heating unit dedicated to the heating unit from above. Has a large size
An electric rice cooker characterized in that the operating surface of the main power switch is exposed even when either the right heating unit or the left heating unit is covered by the rice cooking unit. It is provided with an induction heating cooker having a top plate on the upper surface and a rice cooking unit having an inner pot built in and used so as to be placed close to or in contact with the top plate of the induction heating cooker.
The induction heating cooker includes a heating coil for inductively heating the inner pot, and a first input operating means located on the front side of the heating coil for setting energization conditions of the heating coil.
The rice cooking unit includes a second input operation means for setting rice cooking conditions.
The rice cooking unit covers the upper part of the first input operating means in a state where the rice cooking unit is placed at a predetermined position of the induction heating cooker.
The induction heating cooker includes a cooling fan that supplies cooling air to the heating coil, an infrared communication unit for exchanging information necessary for controlling rice cooking between the rice cooking unit, and the cooling fan. A partition plate extending in the vertical direction is sandwiched between a first air passage into which cooling air is introduced to cool the heating coil and a partition plate extending in the vertical direction with a plastic material in order to introduce cooling air from the cooling fan to cool the infrared communication unit. A second air passage on the front side of the first air passage is provided, respectively.
Before starting the rice cooking process by the rice cooking unit, the induction heating cooker confirms the placement of the rice cooking unit by the infrared communication unit, and then permits the input operation of the second input operation means. A cooking system characterized by having a main control device. A gap leading to the outside is formed between the upper surface of the first input operating means and the lower surface of the rice cooking unit.
Any one of claims 1 to 4, wherein a protrusion protruding toward the gap is formed on at least one of the upper surface of the induction heating cooker and the lower surface of the rice cooking unit. Electric rice cooker described in. The electric rice cooker according to claim 6, wherein the protrusion is formed of an elastic material and is installed so as to longly cross the rear surface of the upper surface of the first input operating means in the left-right direction. .. One of claims 1 to 4, wherein the rice cooking unit covers the upper part of the first input operating means with the rice cooking unit placed at a predetermined position of the induction heating cooker. Described electric rice cooker. A gap leading to the outside is formed between the upper surface of the first input operating means and the lower surface of the rice cooking unit.
Any of claims 1 to 4, wherein a ventilation hole for flowing cooling air of the cooling fan built in the rice cooking unit is formed on the bottom surface of the rice cooking unit corresponding to the gap. The electric rice cooker described in one. A top plate constituting the upper surface of the induction heating cooker is provided.
The top plate has an inclined portion or a step portion that is higher than the upper surface of the peripheral portion thereof.
The electric rice cooker according to claim 6, wherein the protruding portion is installed on the rice cooking unit side and comes into contact with the inclined portion or the step portion. The electric rice cooker according to claim 10, wherein the inclined portion or the step portion is on the rear side of the first input operating means. A top plate constituting the upper surface of the induction heating cooker is provided.
The top plate has an inclined portion that is higher than the upper surface at the most peripheral portion thereof.
Any one of claims 1 to 4, wherein the inclined portion has a window for transmitting an infrared signal for communicating control information between the induction heating cooker and the rice cooking unit. Electric rice cooker described in. The induction heating cooker includes a main control device that controls the heating coil in response to an input from the first input operating means.
The electric rice cooker according to any one of claims 1 to 4, wherein the main control device includes a control program for heating the rice cooking unit with the heating coil to execute a rice cooking process. The induction heating cooker includes a main control device that controls the heating coil in response to an input from the first input operating means.
The main control device includes a control program that heats the rice cooking unit with the heating coil to execute the rice cooking process.
The electric rice cooker according to any one of claims 1 to 4, wherein the induction heating cooker includes a temperature sensor for measuring the temperature of an inner pot built in the rice cooking unit. The induction heating cooker has a main control device that controls the heating coil in response to an input from the first input operating means.
The rice cooking unit has a control device that receives input from the second input operating means and determines rice cooking conditions.
The main control device and the control device transmit control information by infrared communication transmitted through a window formed in a portion where the induction heating cooker and the rice cooking unit overlap.
A power receiving coil is provided at the bottom of the rice cooking unit.
Claims 1 to 3 are characterized in that, inside the induction cooker, a power transmission coil that supplies electric power to the power receiving coil in a non-contact manner is provided on the side opposite to the heating coil with the partition wall interposed therebetween. The electric rice cooker described in any one of the above. When a power source is connected to the induction heating cooker, the main control device is put into a standby state for receiving input by the first input operating means.
When the main control device detects that the rice cooking unit has been placed in a predetermined position in this standby state, the main control device releases the standby state for accepting the input of the first input operating means.
The electric rice cooker according to claim 15, wherein the control device of the rice cooker unit is put into a standby state for receiving input by the second input operation means. The induction heating cooker is provided with a reed switch that magnetically detects that the rice cooking unit is installed at a reference position.
Power is supplied to the main control device via the reed switch.
After the reed switch is turned on, the main control device transmits the infrared signal to the rice cooking unit, and the rice cooking unit is described until a predetermined infrared signal is returned from the rice cooking unit. The electric rice cooker according to claim 15, wherein the heating coil is not energized. The induction heating cooker has a main control device that controls the heating coil in response to an input from the first input operating means.
The rice cooking unit has a control device that receives input from the second input operating means and determines rice cooking conditions.
The main control device and the control device transmit control information by infrared communication transmitted through a window formed in a portion where the induction heating cooker and the rice cooking unit overlap.
The control device has a control program that executes a weight measuring step of measuring the weight of rice or the inner pot containing rice and water.
The control program automatically activates the voice input means at the stage of the weight measurement process.
The rice cooking condition determined after the weight measurement step is completed is any one of claims 1 to 4, wherein the rice cooking condition is transmitted between the rice cooking unit and the induction heating cooker by the infrared communication. Described electric rice cooker. The induction heating cooker has a main control device that controls the heating coil in response to an input from the first input operating means.
The rice cooking unit has a control device that receives input from the second input operating means and determines rice cooking conditions.
The main control device and the control device transmit control information by infrared communication transmitted through a window formed in a portion where the induction heating cooker and the rice cooking unit overlap.
The induction heating cooker and the rice cooking unit have a reference position determining means for determining the position where the rice cooking unit is installed.
After the reference position determining means determines that the position where the rice cooking unit is installed is correct, the main control device transmits a first signal to the rice cooking unit by the infrared communication to the second. Enable the input function of the input operation means and
The control device determines the desired condition for cooking rice by the user by inputting information on the rice type and hardness by the second input operation means.
When a rice cooking start command is input to the control device by the second input operation means, the control device transmits a second signal to the induction heating cooker by the infrared communication.
When the main control device receives the second signal, the main control device controls the energization of the heating coil according to the rice cooking control operation program owned by the main control device, and sequentially executes the preheating step, the rice cooking step, and the unevenness step.
The rice cooking unit is provided with any one of claims 1 to 4, wherein the rice cooking unit is provided with a temperature monitoring means for transmitting temperature data of the inner pot in the rice cooking process to the main control device by an infrared signal. Described electric rice cooker. When the reference position determining means does not determine that the position where the rice cooking unit is installed is correct, the main control device performs either the first process or the second process according to the elapsed time from the start of rice cooking. Is what determines
The first process is executed when the elapsed time from the start of rice cooking is short, and when it is determined that the position where the rice cooking unit is installed is correct within a predetermined time, the transition to the rice cooking process is permitted. To do
The electric rice cooker according to claim 19, wherein the second process does not permit the transition to the rice cooking process and forcibly terminates the rice cooking operation by the rice cooking unit. The bottom surface of the rice cooking unit has a flat bottom plate in contact with the induction heating cooker, and the lower end surface of the outer peripheral edge portion of the main body case forming the outer shell of the rice cooking unit projects downward from the lower surface of the bottom plate. The electric rice cooker according to any one of claims 1 to 4, wherein the electric rice cooker is characterized by the above. The bottom surface of the rice cooker has a two-layer structure of a first bottom plate and a second bottom plate arranged below the first bottom plate and facing the upper surface of the induction cooker. The electric rice cooker according to any one of claims 1 to 4. The electric rice cooker according to claim 22, wherein the bottom portion of the inner pot penetrates the first bottom plate and reaches the vicinity of the upper surface of the second bottom plate below the inner pot. An infrared light emitting element that emits an infrared signal for ventilation is arranged inside the induction cooker, and the infrared light emitting element and the infrared communication unit are placed in the cooling air introduction path leading to the cooling fan. The electric rice cooker according to any one of claims 1 to 4, wherein the electric rice cooker is arranged on the upstream side of the flow of the cooling air with respect to the heating coil. The main control device of the induction heating cooker confirms the placement of the rice cooking unit by the infrared signal before starting the rice cooking process by the rice cooking unit, and after that, the rice cooking unit receives the second input. The cooking system according to claim 5, wherein the input operation of the operating means is permitted. The main control device of the induction heating cooker confirms the placement of the rice cooking unit by the infrared signal before starting the rice cooking process by the rice cooking unit, and then performs the input operation of the first input operation means. Disable and
Further, the induction heating cooker is characterized in that when it detects that the rice cooking unit has completed a predetermined rice cooking process by the infrared signal, the invalid state of the input operation of the first input operation means is released. The cooking system according to claim 5. The induction heating cooker or the rice cooking unit confirms the placement of the rice cooking unit during the rice cooking process by the rice cooking unit, and when it is determined that the rice cooking unit is not at a predetermined reference position, the progress of the rice cooking process. The heating cooking according to claim 5, wherein the process of determining whether to continue or stop the rice cooking operation is performed according to the degree, and the notification operation is performed in advance at the stage of continuing or stopping the rice cooking operation. system. The induction heating cooker confirms the placement of the rice cooking unit during the rice cooking process by the rice cooking unit, and when it is determined that the rice cooking unit is not at a predetermined reference position, wireless communication is notified to the outside by radio. The cooking system according to claim 5, further comprising a portion. A gap leading to the outside is formed between the upper surface of the first input operating means and the lower surface of the rice cooking unit.
A protrusion protruding toward the gap is formed on at least one of the upper surface of the induction heating cooker and the lower surface of the rice cooking unit.
The top plate has an inclined portion or a step portion that is higher than the upper surface at the most peripheral portion thereof.
The heating cooking system according to any one of claims 25 to 28, wherein the protrusion is installed on the rice cooking unit side and comes into contact with the inclined portion or the step portion. The cooking system according to claim 29, wherein the inclined portion or the step portion is located on the rear side of the first input operating means. The main control device of the induction heating cooker according to any one of claims 25 to 28, wherein the main control device includes a control program for heating the rice cooking unit with the heating coil to execute the rice cooking step. Cooking system. The main control device of the induction heating cooker includes a control program for heating the rice cooking unit with the heating coil to execute the rice cooking process.
The heating cooking system according to any one of claims 25 to 28, wherein the induction heating cooker includes a temperature sensor for measuring the temperature of the inner pot built in the rice cooking unit. 25 to 28, wherein the window for transmitting the infrared signal of the infrared communication unit is formed in a portion where the induction heating cooker and the rice cooking unit overlap and are close to each other or in contact with each other. The cooking system according to any one. When a power source is connected to the induction heating cooker, the main control device is put into a standby state for receiving input by the first input operating means.
When the main control device detects that the rice cooking unit has been placed in a predetermined position in this standby state, the main control device releases the standby state for accepting the input of the first input operating means.
The heating cooking system according to claim 32, wherein the control device of the rice cooking unit is put into a standby state for receiving input by the second input operating means. The induction heating cooker is provided with a reed switch that magnetically detects that the rice cooking unit is installed at a reference position.
Power is supplied to the main control device via the reed switch.
After the reed switch is turned on, the main control device transmits the infrared signal to the rice cooking unit, and the rice cooking unit is described until a predetermined infrared signal is returned from the rice cooking unit. The cooking system according to any one of claims 25 to 28, wherein the heating coil is not energized. The induction heating cooker is provided with a reed switch that magnetically detects that the rice cooking unit is installed at a reference position.
Power is supplied to the main control device via the reed switch.
After the reed switch is turned on, the main control device activates the control device of the rice cooking unit.
The main control device according to any one of claims 25 to 28, wherein the main control device does not start energization of the heating coil for the rice cooking unit until a predetermined infrared signal is received from the rice cooking unit. Cooking system. The rice cooking unit has a control device that receives input from the second input operating means and determines rice cooking conditions.
The controller or the main controller of the induction heating cooker has a that control program to perform the weight measurement step of measuring the weight of rice or rice and said kettle water was placed,
The cooking system according to any one of claims 25 to 28, wherein the control program automatically activates a voice input means at the stage of the weight measurement step. The rice cooking unit is provided with any one of claims 25 to 28, characterized in that the rice cooking unit is provided with a temperature monitoring means for transmitting the temperature data of the inner pot in the rice cooking process to the main control device by the infrared signal. Described cooking system. It has a reference position determining means for identifying whether or not the rice cooking unit is placed in a predetermined position of the induction heating cooker.
When the reference position determining means does not determine that the position where the rice cooking unit is installed is correct, the main control device performs either the first process or the second process according to the elapsed time from the start of rice cooking. Is what determines
The first process is executed when the elapsed time from the start of rice cooking is short, and when it is determined that the position where the rice cooking unit is installed is correct within a predetermined time, the transition to the rice cooking process is permitted. It is a thing
The second processing according to any one of claims 25 to 28, wherein the second process does not permit the transition to the rice cooking process and forcibly terminates the rice cooking operation by the rice cooking unit. Cooking system.

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