JPWO2019064648A1 - rice cooker - Google Patents

Abstract

Provided is a rice cooker (100) capable of effectively dissipating the heat of the heated bottom surface of the rice cooker (1) to the outside and preventing the top surface of a table or the like on which the rice cooker is placed from being excessively heated. To do. Further, the strength of the induction heating cooking section (2) on which the rice cooking section is placed is improved. The rice cooker includes a rice cooking unit that accommodates an object to be cooked therein, and an induction heating cooking unit that heats and cooks the rice cooking unit on an upper surface. The rice cooking unit includes an upper case (10C) forming an outer shell, and an annular lower frame (10B) provided below and adjacent to the lower end surface of the upper case. The bottom frame (10P) protruding from the bottom surface of the bottom frame toward the induction cooking section is provided along the outer edge of the bottom surface. A wall surface opening is formed in the bottom wall to connect the inside and the outside surrounded by the bottom wall. On the upper surface of the lower case that constitutes the outer shell of the induction heating cooking section, a reinforcing pillar extending upward is integrally formed.

Description

  TECHNICAL FIELD The present invention relates to a separate type rice cooker including a rice cooker for accommodating an object to be cooked therein, and an induction heating cooker for heating and cooking the rice cooker placed on an upper surface.

  2. Description of the Related Art Conventionally, as disclosed in Patent Document 1, for example, a rice cooker for accommodating an object to be cooked therein, and a hollow box-shaped induction heating cooker for heating and cooking with the rice cooker placed on an upper surface are configured. BACKGROUND ART Separable rice cookers are known. In the rice cooker of Patent Document 1, the rice cooker and the induction heating cooker are separated from each other, so that the rice cooker can be carried to a dining table as a cabinet, and the induction cooker can be used alone as an IH cooker. can do.

JP 2017-079207 A

In the rice cooker disclosed in Patent Document 1, when the separated rice cooker is carried to a dining table as a tub and placed on a table or the like, the upper surface of the table is heated by the bottom of the rice cooker heated by the induction heating cooker. Is done. Therefore, when a sheet such as a table cloth which is easily deformed by heat is laid on the upper surface of the table, the sheet may be heated and deformed by the rice cooker.
In addition, since the weight of the rice cooker containing rice and water is heavier than that of a normal pot or the like, the rice cooker is repeatedly placed on the induction cooker due to long-term use. May be deformed due to the weight of the rice cooker, and the distance between the induction heating cooker and the rice cooker may change, which may lead to a situation in which the expected rice cooking operation cannot be performed.

The present invention has been made to solve the above problems, and can effectively release the heat of the heated bottom surface of the rice cooker to the outside, and the upper surface of a table or the like on which the rice cooker is placed is excessively heated. It is a first object of the present invention to provide a rice cooker capable of preventing a situation in which the rice cooker is heated.
It is a second object of the present invention to provide a rice cooker capable of stably mounting a rice cooker by increasing the mechanical strength of the induction heating cooker on which the heated rice cooker is placed.

  For a first object, a rice cooker according to the present invention includes a rice cooker for accommodating an object to be cooked therein, and an induction heating cooker for heating and cooking the rice cooker placed on an upper surface thereof. The cooking unit has an induction heating coil that heats the rice cooking unit, and includes an infrared signal transmitting and receiving unit that transmits an infrared signal between the induction heating cooking unit and the rice cooking unit, and the rice cooking unit includes an outer shell. An upper case to be formed, an annular lower frame formed of a heat-resistant material provided below the upper case adjacent to a lower end surface of the upper case, and the rice cooker is provided on the lower frame. A bottom wall protruding from the lower surface constituting the bottom surface of the lower frame toward the induction heating cooking unit is provided along an outer edge of the lower surface of the lower frame.

For a second object, a rice cooker according to the present invention includes a rice cooker for accommodating an object to be cooked therein, and an induction heating cooker for heating and cooking the rice cooker placed on an upper surface thereof, wherein the induction heating is performed. The cooking unit has an induction heating coil that heats the rice cooking unit, and includes an infrared signal transmitting and receiving unit that transmits an infrared signal between the induction heating cooking unit and the rice cooking unit, and the rice cooking unit includes an outer shell. An upper case to be formed, an annular lower frame formed of a heat-resistant material provided below a lower end surface of the upper case, and the induction heating cooking unit includes a top plate on which the rice cooking unit is placed. An upper lid made of a conductive material, and a lower case with a bottom whose upper surface opening is closed by the upper lid, and at least one of the upper lid and the lower case is provided between the upper lid and the lower case. Prop or partition wall integrally formed , In which it is provided at least either one.
In addition, for the second object, the rice cooker according to the present invention includes a rice cooker that accommodates an object to be cooked therein, and an induction heating cooker that heats and cooks the rice cooker on the upper surface thereof, Inside the induction heating cooking unit, an induction heating coil for heating the rice cooking unit, an infrared signal transmitting / receiving unit for transmitting an infrared signal between the induction heating cooking unit and the rice cooking unit, and cooling to the induction heating coil. A cooling fan for supplying wind, and the induction heating cooking unit includes a plastic upper lid, and a plastic lower case having a size overlapping with the upper lid, and the upper lid is provided on the upper lid. A top plate on which the rice cooker is placed is fixed by being overlapped, a mounting seat for holding the induction heating coil is integrally formed on a lower surface of the upper lid, and an upper surface of a bottom of the lower case is provided with the cooling fan. Sucking A partition wall extending upward beside the mouth is integrally formed, a cushion material made of a heat insulating material is disposed between an upper end of the partition wall and a lower surface of the upper lid, and the infrared signal transmitting and receiving unit is , Disposed on the opposite side of the partition wall from the cooling fan.
In addition, for the second object, the rice cooker according to the present invention includes a rice cooker that accommodates an object to be cooked therein, and an induction heating cooker that heats and cooks the rice cooker on the upper surface thereof, Inside the induction heating cooking unit, an induction heating coil that heats the rice cooking unit, a reed switch that detects that the rice cooking unit is placed on the induction heating cooking unit, and cooling air to the induction heating coil. And a cooling fan to be supplied, respectively, wherein the induction heating cooking unit includes a plastic upper lid and a plastic lower case having a size overlapping with the upper lid, and the rice cooker is provided on the upper lid. The top plate on which the cooling fan is placed is overlapped and fixed, and a partition wall extending upward is integrally formed on the bottom upper surface of the lower case, and the reed switch is located on the opposite side to the cooling fan with the partition wall interposed therebetween. Those which are location.

  For the second object, the rice cooker according to the present invention includes a top plate, an induction heating coil disposed below the top plate, and a second input operation means for inputting a heating condition of the induction heating coil. A rice cooker provided with a box-shaped induction heating cooker provided, an inner pot heated by the induction heating coil, and a first input operation unit for inputting rice cooking conditions, wherein the rice cooker comprises: The induction heating coil is heated by driving the induction heating coil in a state where the induction heating coil is placed on the top plate, and cools the induction heating coil inside the induction heating cooking unit. A cooling fan for supplying cooling air, an infrared signal transmitting / receiving unit for transmitting an infrared signal including control information for rice cooking between the induction heating cooking unit and the rice cooking unit, and the rice cooking unit of A power transmission coil for supplying power for the control unit, and the induction heating cooking unit is configured by vertically stacking a plastic upper lid and a plastic lower case having a size overlapping with the upper lid. An outer shell case is formed, and a partition wall extending in the direction of the upper lid and receiving the load of the upper lid is integrally formed on an upper surface of a bottom of the lower case, and the power transmission coil extends upward from a bottom of the lower case. It is supported by projecting support legs.

ADVANTAGE OF THE INVENTION According to the rice cooker of the 1st invention which concerns on this invention, it can prevent that the heat | fever of the bottom surface of a rice cooker heats the upper surface of a table etc. on which a rice cooker was mounted excessively by the lower frame of a rice cooker.
Further, according to the rice cooker of the second invention, the mechanical strength of the induction heating cooking unit on which the rice cooker is placed can be enhanced, the rice cooker can be stably placed, and a stable rice cooking operation can be expected.

It is the appearance perspective view which looked at the rice cooker concerning Embodiment 1 of the present invention from the upper surface side. It is a side view of the rice cooker according to Embodiment 1 of the present invention. It is the rice cooker which concerns on Embodiment 1 of this invention, Comprising: It is a side view which fractured | ruptured partially and showed the internal structure. It is the rice cooker concerning Embodiment 1 of this invention, Comprising: It is front view which fractured | ruptured partially and showed the internal structure. It is the external appearance perspective view which looked at the rice cooker part of the rice cooker concerning Embodiment 1 of this invention from the bottom surface side. It is an appearance perspective view showing the induction heating cooking part of the rice cooker according to Embodiment 1 of the present invention. It is the external appearance perspective view which showed the different forms of the induction heating cooking part of the rice cooker which concerns on Embodiment 1 of this invention. It is a top view of the induction heating cooking part of the rice cooker which concerns on Embodiment 2 of this invention. FIG. 9 is a vertical cross-sectional view as viewed along line X1-X1 in FIG. 8. FIG. 9 is a vertical cross-sectional view as viewed along line Y1-Y1 in FIG. 8. It is a longitudinal cross-sectional view of the rice cooker according to Embodiment 3 of the present invention. It is a principal part longitudinal cross-sectional view of the left part of the rice cooker of FIG. It is a longitudinal cross-sectional view which expands and shows the front part of the rice cooker which concerns on Embodiment 4 of this invention. It is a top view which shows the induction heating cooking part of the rice cooker which concerns on Embodiment 5 of this invention. FIG. 15 is a longitudinal sectional view taken along line X2-X2 in FIG. 14. In the rice cooker according to Embodiment 6 of the present invention, it is a longitudinal sectional view showing a first half of an induction heating cooking unit. In rice cooker according to Embodiment 7 of the present invention, it is a longitudinal sectional view showing a lower part of a rice cooker and an induction heating cooker. In the rice cooker according to Embodiment 8 of the present invention, it is an enlarged longitudinal sectional view showing a front part of the induction heating cooking part and a front lower part of the rice cooking part. In the rice cooker according to Embodiment 9 of the present invention, it is a longitudinal sectional view showing, on an enlarged scale, a left side portion of the induction heating cooking unit and a left side portion of the rice cooking unit.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited by the embodiments described below. Further, in the following drawings, the size relationship of each component may be different from the actual one.

Embodiment 1 FIG.
Rice cooker 100 of Embodiment 1 is shown in FIGS.
FIG. 1 is an external perspective view of rice cooker 100 according to Embodiment 1 as viewed from the top side. FIG. 2 is a side view of rice cooker 100 according to Embodiment 1. FIG. 3 is a side view showing rice cooker 100 according to Embodiment 1, which is partially broken to show an internal structure. FIG. 4 is a front view of rice cooker 100 according to Embodiment 1, which is partially broken to show an internal structure. FIG. 5 is an external perspective view of rice cooker 1 of rice cooker 100 according to Embodiment 1 as viewed from the bottom side.

  In the following description, "right" indicates the right side and "left" indicates the left side, as indicated by the broken arrow in FIG. Further, “rear” indicates the rear, and “front” indicates the forward direction. Unless otherwise noted, these definitions indicate direction.

  As shown in FIG. 1, rice cooker 100 according to Embodiment 1 includes a rice cooker 1 that accommodates an object to be cooked therein, and an induction heating cooker 2 that heats and cooks rice cooker 1 on the upper surface. It is a separated type rice cooker configured. In the rice cooker 100, the rice cooker 1 and the induction heating cooker 2 can be separated and used independently. That is, the rice cooker 100 can use the separated rice cooker 1 as a tub and carry it to the table, and can use the separated induction heating cooker 2 as an IH cooker. The rice cooker 1 and the induction heating cooker 2 are provided with a controller 40 (see FIG. 2) and a controller 23 (see FIG. 3) therein, respectively, and are connected to the controller 40 and the controller 23, respectively. Wireless communication is performed at a communication terminal (for infrared communication) (infrared signal transmitting / receiving unit 41). The communication terminal will be described later in detail. The control unit 23 and the control unit 40 each use a microcomputer as a central control unit serving as a core.

  Since the induction heating cooking unit 2 has a power cord provided at one end with a power plug that can be connected to a household power supply, the induction heating cooking unit 2 can be used alone. On the other hand, the rice cooking unit 1 starts the induction heating cooking unit 2 connected to the power supply, and operates by receiving electric power from the induction heating coil 24 built in the induction heating cooking unit 2 in a non-contact power supply system. . That is, the rice cooker 1 cannot operate alone without the power supply unit 29 described later. In the non-contact power supply, a power receiving coil 51 (see FIG. 3) provided at the bottom of the rice cooker 1 and a power transmitting coil 50 arranged on the ceiling of the induction heating cooking unit 2 so as to be located immediately below the power receiving coil 51. (See FIG. 3).

  In FIG. 3, the power supply unit 29 is provided in a space behind the inner pot 13. The power supply unit 29 includes, for example, a secondary battery such as a lead storage battery, a nickel hydride storage battery, or a lithium ion storage battery. The power supply unit 29 is not limited to a secondary battery, but may be a primary battery such as a dry battery. As described above, when the power supply unit 29 is formed of a primary battery, it is desirable to provide the power supply unit 29 at a position where the primary battery can be easily replaced in consideration of the possibility of replacing the power supply unit 29. .

  The control unit 40 of the rice cooking unit 1 is operated by the electric power obtained by the power receiving coil 51. Also, the first display unit 42 performs a display operation using the power obtained by the power receiving coil 51.

  First, the configuration of the rice cooker 1 will be described. As shown in FIGS. 1 and 2, the rice cooker 1 is rotatably connected to the main body 10 by a hinge mechanism 12 and an open upper surface of the main body 10. And a cover 11 for covering.

  As shown in FIGS. 1 to 5, the main body 10 has a cylindrical shape with a bottom, and an inner pot 13 is detachably mounted inside. A lid opening / closing button 10 a for opening and closing the lid 11 is provided on the front side of the main body 10. When the user presses the lid opening / closing button 10a, the closed state of the lid 11 is released, and the main body 10 can be opened.

  As shown in FIGS. 1 and 2, a handle 14 for detaching the rice cooker 1 from the induction heating cooker 2 and carrying the rice cooker 1 is attached to the main body 10. The handle 14 is substantially U-shaped, and both ends are rotatably attached to the left and right side surfaces of the main body 10, respectively.

  As shown in FIG. 5, the main body 10 is provided with a bottom wall 10P protruding from the bottom toward the induction heating cooking unit 2 along the outer edge of the bottom. The bottom wall 10P is formed with a wall opening 30 that allows the inside and the outside surrounded by the bottom wall 10P to communicate with each other.

  The main body 10 is provided below the upper case 10C so as to cover the entire upper opening of the bottom surface of the upper case 10C and the upper case 10C integrally formed in a cylindrical shape from a plastic material constituting the outer shell. And an annular lower frame 10B formed of a conductive material.

  The lower frame 10B is connected to the upper case 10C with screws (not shown) so as to cover the bottom surface of the upper case 10C, and the lower portion of the lower frame 10B projects toward the induction heating cooking unit 2 with the bottom wall 10P. Becomes The material of the lower frame 10B is, for example, PET or PA. The material of the upper case 10C is PP or ABS. “PET” refers to polyethylene terephthalate. “PA” means polyamide, and “PP” means polypropylene.

  A large circular hole 16 is formed in the center of the lower frame 10B. The container 17 is formed in a bottomed cylindrical shape, and covers the periphery of a bottomed cylindrical inner pot 13 described later. The bottom surface of the container 17 is tightly fitted into the hole 16 to seal the hole 16. The material of the container 17 is, for example, PET or PA.

  In FIG. 3, a broken line PL1 is a horizontal line indicating the position of the uppermost surface of the lower frame 10B. As can be seen from the broken line PL1, the lower frame 10B is a component having a small height (about 10 mm to 20 mm) and an annular (ring-like) planar shape.

A dashed line PL1 shown in FIG. 3 indicates a height (range) in which the boundary between the upper case 10C and the lower frame 10B can be recognized on the appearance of the rice cooker 1.
Hereinafter, PL1 is referred to as a “first separation line”.

  The wall surface opening 30 is a trapezoidal cutout hole formed by cutting out the bottom wall 10P of the lower frame 10B. A plurality of (12 in the illustrated example) wall surface openings 30 are formed at intervals along the entire periphery of the lower frame 10B. When the rice cooker 1 separated from the induction heating cooker 2 is carried to a dining table as a so-called cabinet and placed on a table or the like, the wall surface opening 30 transfers the heat of the heated bottom surface of the rice cooker 1 to the outside. It is formed for the purpose of escape. The wall opening 30 is preferably formed on the bottom wall 10P of the lower frame 10B so as to oppose each other in front, rear, left and right of the main body 10 in order to form convection of air. When the rice cooking operation is performed, especially the inner pot 13 of the rice cooking section 1 is induction-heated, so that the heat of the induction heating causes the temperature of the container 17 to rise.

  The shape, size, and number of the wall openings 30 are not limited to the illustrated embodiment. The wall opening 30 may be, for example, a rectangular hole or a circular hole whose periphery is surrounded. Further, the wall surface opening 30 may be a cutout hole cut out in an arc shape. In short, the wall surface opening 30 is appropriately designed and provided in accordance with the size of the main body 10.

  As shown in FIGS. 3 and 5, the main body 10 has an intake hole 4 formed on the bottom surface and an exhaust hole 5 formed on the back side surface and communicating with the intake hole 4. I have. That is, in the rice cooker 1, the inside and the outside surrounded by the bottom wall 10 </ b> P communicate with each other through the intake hole 4 and the exhaust hole 5. Thereby, the rice cooker 1 can form a convection of air between the intake hole 4 and the exhaust hole 5, and the heat of the bottom surface of the cooked rice cooker 1 is heated by the air flowing from the wall opening 30. 4 can be released to the outside through the exhaust hole 5.

  In addition, the exhaust hole 5 is not limited to the configuration formed on the rear side surface of the main body 10. The exhaust hole 5 may be provided, for example, on another side surface of the main body 10 or on the lid 11. In short, the exhaust hole 5 may be provided at any position of the rice cooker 1 as long as the exhaust hole 5 can communicate with the intake hole 4 and form convection of air together with the wall surface opening 30.

  In addition, rice cooker 100 of the first embodiment does not necessarily need to have intake hole 4 and exhaust hole 5, and may have a configuration in which the heat on the bottom surface of cooked rice cooker 1 that has been heated is released to the outside only by wall opening 30. Good.

  The inner pot 13 has a bottomed cylindrical shape and is made of a carbon material that generates heat by induction heating. The inner pot 13 may be a container (a so-called earthen pot) made of a nonmetallic material such as a ceramic, or a metal container using a clad material of aluminum and stainless steel. Inside the inner pot 13, rice and water to be cooked are stored.

  The lid 11 covers the top opening of the main body 10 so as to be openable and closable. The lid 11 has a rear end connected to an upper portion of the main body 10 by a hinge mechanism 12. When the lid opening / closing button 10a is pressed in a closed state, the lid 11 can be rotated about the hinge axis of the hinge mechanism 12. As shown in FIG. 1, the lid 11 is provided with a steam port 11 a for letting steam generated inside the rice cooker 1 escape.

  As shown in FIG. 1, the lid 11 is provided with a first input operation unit 15 for inputting rice cooking conditions and the like by a user. The first input operation unit 15 is an operation unit that receives an operation input for executing, for example, a preheating process, a rice cooking process, a rice drying process, and the like. The first input operation unit 15 is connected to the control unit 40 illustrated in FIG. 2, and transmits an input operation signal to the induction heating cooking unit 2 as an infrared signal through an infrared signal transmission / reception unit 41 (not illustrated). Is done. The first input operation unit 15 has a configuration in which a plurality of press-type input keys 15A are arranged. However, the first input operation unit 15 may be a touch-type input key 15A, or both may be used in combination.

  A first display unit 42 for displaying the result of the input operation by the first input operation unit 15 or the rice cooking operation or the like with numbers, characters, symbols, or the like is provided on the left and right sides of the upper surface of the lid 11. . In addition, the first display unit 42 is configured by, for example, a liquid crystal display substrate having a liquid crystal display screen.

  Next, the configuration of the induction heating cooking unit 2 will be described based on FIGS. 6 and 7 with reference to FIGS. 1 to 5. FIG. 6 is an external perspective view showing induction heating cooking unit 2 of rice cooker 100 according to Embodiment 1. FIG. 7 is an external perspective view illustrating a different mode of the induction heating cooking unit 2 of the rice cooker 100 according to Embodiment 1. The induction heating cooking unit 2 is, for example, a table-type electromagnetic cooker that is used by placing it on a dining table or the like.

  As shown in FIG. 6, the induction heating cooking unit 2 has a thin, substantially rectangular parallelepiped shape. The induction heating cooking unit 2 is provided with a top plate 20 made of a heat-resistant material such as crystallized glass on the upper surface. In the induction heating cooking unit 2, a stepped portion 21 which is depressed downward along the outer peripheral edge of the top plate 20 is formed. The step portion 21 of the induction heating cooking unit 2 is formed in a shape and size such that the lower end surface of the bottom wall 10P (the lower frame 10B) of the rice cooking unit 1 abuts and the bottom wall 10P fits tightly. That is, when the rice cooker 1 is placed on the induction heating cooker 2, the bottom wall 10 </ b> P of the rice cooker 1 fits into the step 21 of the induction cooker 2, and the top plate 20 is attached to the bottom wall 10 </ b> P. It is designed to be stored inside.

  The stepped portion 21 of the induction heating cooking unit 2 is provided with a projection 6 that fits into the wall surface opening 30 at a position facing the wall surface opening 30. This is because when the rice cooker 1 is placed on the upper surface of the induction heating cooker 2 and cooked, the wall opening 30 is closed by the protrusion 6 and the heat heated by the induction cooker 2 is prevented from leaking to the outside. To do that. In addition, it is also to make the side surface of the rice cooker 100 flat without holes so as to enhance the cleaning property when the dirt is wiped off with a cloth or the like.

  The protruding portion 6 is provided such that the tip is lower than the top plate 20 of the induction heating cooking section 2. This is a case where the rice cooker 1 is separated and the induction heating cooker 2 is used alone as an IH cooker. When the cooking vessel is placed on the top plate 20, the presence of the protrusion 6 does not interfere. In order to make it possible to use cooking containers of various sizes. Also, this is for ensuring the induction heating efficiency by bringing the bottom surface of the cooking vessel into close contact with the top plate 20 of the induction heating cooking unit 2.

  FIG. 7 is an external perspective view showing a different mode of induction heating cooking unit 2 of rice cooker 100 according to Embodiment 1. As shown in FIG. 7, the protrusion 7 may be provided in the stepped portion 21 such that the tip is higher than the top plate 20 of the induction heating cooking unit 2. In this case, if the rice cooker 100 uses a small cooking container that fits in the top plate 20, the range of movement of the cooking container is limited by the projections 7. A situation such as dropping can be prevented.

  As shown in FIG. 6, the induction heating cooking unit 2 is provided with a second input operation unit 22 on the front side of the upper surface. The second input operation unit 22 is provided with various push-type input buttons 22 </ b> A, and is connected to the control unit 23. The various input buttons 22A are used to input various conditions such as, for example, heat, a cooking menu, and a cooking time. By operating the second input operation unit 22, the induction heating cooking unit 2 can perform induction heating cooking independently of the rice cooking unit 1. When the rice cooker 1 and the induction heating cooker 2 are combined as shown in FIGS. 1 to 4, the second input operation unit 22 is housed inside the bottom wall 10 </ b> P together with the top plate 20. ing. In other words, the second input operation unit 22 is covered with the rice cooking unit 1 so as not to be operated by the user.

  A second display unit 28 for displaying the result of the input operation by the second input operation unit 22 or the induction heating operation or the like by numbers, characters, symbols, or the like is provided on the left and right.

  3 and 4, an induction heating coil 24, a temperature sensor 25, a ferrite 26, a power supply board 27, and a power transmission coil 50 are provided inside the induction heating cooking unit 2, respectively. ing. The induction heating coil 24 is disposed at substantially the center inside the induction heating cooking unit 2, and is controlled by the control unit 23 based on operation inputs of the first input operation unit 15 and the second input operation unit 22. . The induction heating coil 24 generates an alternating magnetic field when energized, and heats the object to be heated by electromagnetic induction. Further, the temperature sensor 25 is provided for detecting the temperature of the inner pot 13 or the top plate 20, and is connected to the controller 23.

  The ferrite 26 has an elongated plate shape and is provided so as to be orthogonal to the winding of the induction heating coil 24. The ferrite 26 is provided to concentrate the lines of magnetic force generated from the induction heating coil 24 on the object to be heated above the top plate 20.

  A power supply board 27 is provided on the back side inside the induction heating cooking unit 2. The power supply board 27 includes a converter that converts AC power of commercial power into DC power, an inverter that converts DC power from the converter into AC power, and supplies the AC power to the induction heating coil 24, and a control circuit that controls the inverter. Has been implemented. The power supply board 27 is connected to the control unit 23 via a signal line.

  Note that an infrared signal transmitting / receiving unit 62 that receives an input operation signal (infrared signal) transmitted from an infrared signal transmitting / receiving unit 41 (not shown) of the rice cooking unit 1 is housed in the induction heating cooking unit 2. , Not shown.

The infrared signal transmitting / receiving unit 41 and the infrared signal transmitting / receiving unit 62 are infrared communication terminals (communication units), and each include an infrared signal receiving unit and a transmitting unit. An input operation signal, a temperature detection signal of the inner pot 13 and the like are transmitted from the rice cooker 1 to the induction heating cooker 2 each time. Conversely, an identification signal for confirming that the rice cooker 1 is placed at the proper position is transmitted from the induction heating cooker 2 to the rice cooker 1 by infrared rays, and the regular signal from the rice cooker 1 is transmitted. A response signal is received.
The control unit 23 of the induction heating cooking unit 2 executes various controls such as the start of current supply to the induction heating coil 24 or the power transmission coil 50, the amount of power supply, and the stop of power supply in accordance with the reception of the infrared signal from the rice cooker 1.

  By the way, in the conventional rice cooker 100, the linear distance between the induction heating coil 24 and the inner pot 13 is preferably smaller so that the induction heating coil 24 can efficiently heat the inner pot 13 efficiently. Therefore, the bottom surface of the inner pot 13 is close to or in close contact with the container 17 constituting the bottom surface of the rice cooker 1.

  For this reason, when the separated rice cooker 1 is brought to a dining table as a chest and placed on a table or the like, the upper surface of the table is heated by the bottom surface of the rice cooker 1 heated by the induction heating cooker 2. That is, since the temperature of the container 17 itself, which is partially exposed at the bottom of the rice cooker 1, is high, if a sheet such as a tablecloth that is easily deformed by heat from the container 17 is laid on the upper surface of the table, The sheet may be heated and deformed by the rice cooker 1. Also, the table itself may be deformed.

  The rice cooker 1 of the rice cooker 100 according to the first embodiment has a bottom wall 10P protruding from the bottom toward the induction heating cooker 2 along the outer edge of the bottom. The bottom wall 10P is formed with a wall opening 30 that allows the inside and the outside surrounded by the bottom wall 10P to communicate with each other. By forming the wall opening 30, the rice cooker 100 is heated even when the rice cooker 1 separated from the induction heating cooker 2 is carried to a dining table as a chest and placed on a table or the like. The heat on the bottom surface of the cooked rice unit 1 can be released outside through the wall surface opening 30. Therefore, in rice cooker 100 of the first embodiment, a situation where the upper surface of a table or the like is excessively heated can be prevented.

  The rice cooker 100 of the first embodiment has a cutout hole formed by cutting the lower frame 10 </ b> B so that the wall opening 30 faces the wall opening 30 of the induction heating cooking unit 2. The projection 6 that fits into the opening 30 is provided. Therefore, when the rice cooker 100 is placed on the upper surface of the induction cooking unit 2 and cooked, the wall opening 30 can be closed by the protrusion 6, and thus the rice cooker 100 is heated by the induction cooking unit 2. The cooking effect can be enhanced without leaking the heat to the outside.

  Further, the induction heating cooking unit 2 of the rice cooker 100 according to the first embodiment has a stepped portion 21 that is recessed downward along the outer peripheral edge of the upper surface for heating and cooking the rice cooking unit 1. The protruding portion 6 is provided at the step portion 21 such that the front end portion is lower than the upper surface of the induction heating cooking portion 2. Therefore, the rice cooker 100 is a case in which the rice cooker 1 is separated and the induction heating cooker 2 is used alone as an IH cooker, and when the cooking container is placed on the upper surface, the presence of the protrusion 6 hinders. In addition, since cooking containers of various sizes can be used, it is excellent in usability.

  On the other hand, in the modification of the first embodiment described with reference to FIG. 7, the protrusion 6 may be provided in the stepped portion 21 such that the tip is higher than the upper surface of the induction cooking unit 2. In this case, when the rice cooker 100 uses a small cooking container that fits on the upper surface of the induction heating cooking unit 2, the movement range of the cooking container is limited by the protrusion 7, so that the cooking container tilts during cooking or the induction heating is performed. A situation in which the cooking unit 2 accidentally falls from the upper surface can be prevented.

  Further, rice cooker 1 of rice cooker 100 of the first embodiment has an intake hole 4 formed on the bottom surface and an exhaust hole 5 formed on the outer surface and communicating with intake hole 4. In rice cooker 100 of the first embodiment, since air convection can be formed between intake hole 4 and exhaust hole 5, the heat of bottom surface of rice cooker 1 heated by air flowing in from wall opening 30 is heated. Can be discharged from the intake hole 4 to the outside through the exhaust hole 5. Therefore, rice cooker 100 of Embodiment 1 can more effectively prevent a situation in which the upper surface of a table or the like is excessively heated.

(Summary of Embodiment 1)
Rice cooker 100 shown in Embodiment 1 has the following configuration. That is,
A rice cooker 1 for accommodating an object to be cooked therein; and an induction heating cooker 2 for heating and cooking the rice cooker 1 placed on an upper surface thereof,
The rice cooker 1 includes an upper case 10C forming an outer shell, and an annular lower frame 10B formed of a heat-resistant material and provided below the upper case 10C adjacent to the lower end surface of the upper case 10C. ,
The lower frame 10B has a bottom wall 10P protruding from the lower surface of the lower frame 10B constituting the bottom surface of the rice cooking unit 1 toward the induction heating cooking unit 2, and an outer edge of the lower surface of the lower frame 10B (the bottom surface of the rice cooking unit 1). It is provided along.

  According to rice cooker 100 of the first embodiment, lower frame 10B of rice cooker 1 can prevent the heat of the bottom surface of rice cooker 1 from excessively heating the upper surface of a table or the like on which rice cooker 1 is placed.

Embodiment 2 FIG.
A rice cooker 100 according to Embodiment 2 is shown in FIGS. FIG. 8 is a plan view of induction heating cooking unit 2 of rice cooker 100 according to Embodiment 2. FIG. 9 is a longitudinal sectional view taken along line X1-X1 in FIG. In FIG. 9, the rice cooker 1 shows only the lower end. FIG. 10 is a longitudinal sectional view taken along line Y1-Y1 of FIG. The description of the same components as those in the first embodiment may be omitted. Further, the same or corresponding portions as in Embodiment 1 are denoted by the same reference numerals.

  The rice cooker 100 according to Embodiment 2 is designed so that the mechanical strength of the induction heating cooking unit 2 on which the rice cooking unit 1 is placed is enhanced, and the rice cooking unit 1 can be stably placed.

Next, the planar arrangement of the internal structure of the induction heating cooking unit 2 will be described.
As shown in FIG. 8, an induction heating coil 24 having a circular planar shape is disposed on the left and right center lines of the induction heating cooking unit 2 such that the center is located.

  The cooling fan 60 is at a position slightly to the right toward the front as viewed from the center point of the induction heating cooking unit 2. The cooling fan 60 has an intake port 77 (see FIG. 9) disposed immediately below, and draws in cool air from the intake port 77 and supplies it as cooling air to the inside of the first air passage SH1. The intake port 77 has a configuration in which elongated slit-like holes are arranged or a large number of small-diameter holes are arranged.

  Plastic parts such as the upper lid 2B and the lower case 2C are generally manufactured using an injection molding machine. If injection molding is performed with a small amount of granular plastic material called pellets, the weight of the completed upper lid 2B and lower case 2C can be reduced, and the cost can be reduced. However, when the amount of the material is reduced, the material becomes thinner and the strength is weakened.

  Therefore, in the first embodiment, the columns 74 integrally formed from the lower case 2C and protruding upward are dispersedly arranged at four places in total. The reinforcing effect can be expected by forming the support columns 74 in the vertical direction that receives the load.

  The columns 74A and 74B are columns 74 in front of the rice cooker 100, which are located near the second input operation unit 22. The struts 74C and the struts 74D are the struts 74 behind the rice cooker 100, which are installed on the right and left sides of the induction heating coil 24 at a distance of about several cm.

  The support 74A and the support 74B have a perfect circular cross-sectional shape. The struts 74C and the struts 74D have an oval shape having a long cross-sectional shape in the front-rear direction and a smooth curved surface, and are configured so as not to obstruct the flow of the cooling air from the cooling fan 60 as much as possible.

  In the second input operation unit 22, when the user performs a touch input, the support 74A and the support 74B are frequently pressed down on the surface plate 22P with a finger from above, so that the force at that time is dispersed. It is arranged to receive. That is, the support 74A and the support 74B are provided as reinforcements in the second input operation unit 22 in consideration of receiving a load from above.

  The support 74C and the support 74D formed on the right and left sides of the induction heating coil 24 are such that an object to be heated, such as the inner pot 13 containing rice and water or a pot containing water and ingredients, is directly above the opening 2H of the upper lid 2B. It is installed so that it receives the load in a distributed manner.

  In the second embodiment, the inner pot 13 of the rice cooker 1 and the like are placed directly above the induction heating coil 24. Therefore, when a load is applied to the top plate 20 at a position directly above the induction heating coil 24, a force is exerted to push down the edge of the opening 2H of the upper lid 2B immediately below the top plate 20.

  In the second embodiment, since the columns 74C and the columns 74D are arranged on the right and left sides of the position of the induction heating coil 24, the edge of the opening 2H of the upper lid 2B is supported from below by the columns 74C and 74D. Thus, the curvature and the like of the upper lid 2B can be prevented.

  A partition wall 61 formed integrally with the bottom surface of the lower case 2C is provided on the bottom surface of the lower case 2C. The partition wall 61 includes a front circular arc portion 61C, a right side portion 61R, and a left side portion 61L. The front arc portion 61C is on the front side of the lower case 2C and crosses the front side of the cooling fan 60. The right side portion 61R extends linearly to the rear of the lower case 2C continuously from the rear end face of the front arc portion 61C. The left side portion 61L extends linearly to the rear of the lower case 2C continuously from the rear end surface of the front arc portion 61C.

  As shown in FIG. 8, in the second embodiment, the infrared signal transmitting / receiving section 62 includes two infrared light emitting elements 62S (infrared signal transmitting section) and an infrared light receiving element 62R (infrared signal receiving section). ing. Both signals of the infrared light emitting element 62S and the infrared light receiving element 62R are analyzed and processed by one communication control unit 62C, and the communication control unit 62C outputs the transmission / reception data analysis result to the control unit 23.

In FIG. 8, the power transmission coil 50 has an annular outer shape.
As is clear from FIG. 8, the infrared signal transmitting / receiving section 62 is located closest to the cooling fan 60 in the first air passage SH1.

The power transmission coil 50 is located upstream of the induction heating coil 24 in the flow of the cooling air in the first ventilation path SH1, and is separated from the induction heating coil 24 by a linear distance of about 10 cm.
Because of this positional relationship, the power transmission coil 50 does not come into contact with the warm air after cooling the induction heating coil 24, and is not heated by the alternating magnetic field generated by the induction heating coil 24.

  The reed switch 18 is a magnetic proximity switch that closes an electrical contact by receiving a magnetic force. In the reed switch 18 having a typical configuration, two nickel alloy (magnetic material) leads are partially overlapped and sealed in a glass tube, and the overlapped portion is subjected to a contact treatment of gold, silver, or the like. Have been. In the reed switch 18 having a typical configuration, an inert gas is sealed in a glass tube in order to prevent activation of the contact. At the bottom of the rice cooker 1, a permanent magnet 19 (not shown) that generates a magnetic force so as to close the reed switch 18 is provided.

Next, FIG. 9 will be described.
The induction heating cooking unit 2 includes a cooling fan 60, an induction heating coil 24, a power transmission coil 50, a partition wall 61, a control unit 23, and a second input operation unit 22 in an internal space of the induction heating cooking unit 2. And an infrared signal transmission / reception unit 62. The induction heating coil 24 is formed in a disk shape. The partition wall 61 forms a first air passage SH1 and a second air passage SH2 in the internal space of the induction heating cooking unit 2. The infrared signal transmitting and receiving unit 62 constitutes an infrared communication unit of the induction heating cooking unit 2.

  The induction heating coil 24 is installed on a support frame 63 called a coil base formed of heat-resistant plastic or the like. The support frame 63 is formed with a large number of through holes 63A having a large opening area in order to increase air permeability.

  In the induction heating cooking unit 2, an outer shell case 2A is formed by a bottomed box-shaped lower case 2C constituting an outer shell of the induction heating cooking unit 2, and an upper lid 2B covering the entire upper surface of the lower case 2C. ing.

  The lower case 2C and the upper lid 2B are formed by integral plastic injection molding (injection molding method). Therefore, the material is a thermoplastic plastic. In addition, the lower case 2C and the upper lid 2B are shaped so as to completely overlap when viewed in a plan view. In other words, the projected area when projecting vertically is the same. Further, since the upper lid 2B is used in a higher temperature environment than the lower case 2C, a material having higher heat resistance than the lower case 2C is selected.

  The plane dimensions of the lower frame 10B are set to dimensions close to the plane shape of the upper lid 2B. For this reason, the overall appearance of the rice cooker 100 is a box shape whose planar shape is close to a square, as in the first embodiment shown in FIG.

The upper lid 2B is securely fixed to the lower case 2C by fixing means such as screws (not shown).
The top plate 20 covers a large square opening 2H formed at the center of the lower frame 10B, and is made of crystallized glass having high heat resistance or a plastic material such as PET or PPS. Immediately above the top plate 20, the bottom of the inner pot 13 is arranged so as to be in contact with or close to.

  The top plate 20 has a diameter larger than the maximum outer diameter of the induction heating coil 24.

  The horizontal line PL2 shown in FIG. 9 indicates that the boundary between the upper lid 2B and the lower case 2C can be recognized on the appearance of the induction heating cooking unit 2. The horizontal line PL2 is a horizontal position where the lower case 2C and the upper lid 2B are overlapped when the outer shell of the induction heating cooking unit 2 is manufactured. Hereinafter, the horizontal line PL2 is referred to as a “second separation line”.

The strut 74B is a front strut 74 of the four struts 74 integrally formed on the upper surface of the lower case 2C.
The struts 74A and the struts 74B are respectively formed at the position behind the second input operation means of the induction heating cooking unit 2 so as to face each other. Since the columns 74C and 74D have the induction heating coil 24 installed at the center of the lower case 2C, they are arranged on the left and right sides of the induction heating coil 24.

On the lower surface of the upper lid 2B, there are provided two convex portions 73 integrally formed on the lower surface of the upper lid 2B, and the convex portions 73 are located right above the columns 74A and the columns 74B.
When the outer case 2A of the induction heating cooking unit 2 is manufactured, when the lower case 2C and the upper lid 2B are overlapped, the struts 74A and the projections 73, and the struts 74B and the projections 73 have contact or minute gaps. In a state of facing each other. For this reason, it can be expected that the load applied to the upper surface of the upper lid 2B is supported by the columns 74A and the columns 74B.

  In addition to the columns 74A and the projections 73, and the columns 74B and the projections 73, as shown in the drawing, the columns 74A and the projections 73 may be indirectly contacted with an intervening member such as a cushioning material between them. . For example, if the cushioning material or the like is a material having a high heat insulating property, heat conduction from the side of the convex portion 73 of the upper lid 2B to the side of the column 74A and the column 74B is reduced, and the temperature of the lower case 2C is expected to be kept low. it can. The inclusion is not limited to a solid, but may be a soft material such as a half liquid, such as a silicone rubber sealing material.

  The partition wall 61 partitions the space surrounded by the lower case 2C and the upper lid 2B into two spaces, front and rear, as shown in FIG.

The infrared signal transmitting / receiving section 62 includes an infrared light emitting element 62S, an infrared light receiving element 62R, a support substrate 62B on which the infrared light emitting element 62S and the infrared light receiving element 62R are mounted, and a communication control section 62C.
The support substrate 62B is horizontally fixed to the uppermost surface of the partition wall 61.

  The cooling fan 60 that cools the inside of the induction heating cooking unit 2 is disposed immediately above an intake port 77 formed on a front bottom wall surface of the lower case 2C. As the cooling fan 60, for example, an axial-flow type blowing fan is used.

  A fan motor 60M is installed right above the intake port 77, and the cooling fan 60 is driven to rotate by the fan motor 60M. The fan motor 60M is fixed to the upper surface of a circular fan case 60C that is integrally formed with the lower case 2C so as to straddle above the intake port 77 and that has support legs having an inverted U-shaped vertical cross section. The fan case 60C has one or two supporting legs, and a large space is secured around the supporting legs so as not to impair the air permeability.

  The heating circuit board 80 is mounted with an inverter circuit for supplying high-frequency power to the induction heating coil 24, and is mounted with various electric components such as a semiconductor power control element and a switching element. Among the various electric components, a semiconductor power control element such as an IGBT is mounted on a radiating fin 81 (or “heat sink”) made of aluminum in order to release heat generated during the control operation. On the bottom surface of the lower case 2 </ b> C, a support protrusion 114 that supports the heating circuit board 80 is provided. The plurality of support protrusions 114 are provided on the bottom surface of the lower case 2C by integral molding.

  Immediately above the radiation fins 81, an electrically insulating sheet 83 (or a thin plate) is provided. The sheet 83 is provided directly above the radiation fins 81 for the purpose of increasing the insulation between the induction heating coil 24 and the heating circuit board 80. The electrically insulating sheet 83 (or thin plate) is formed from a plastic material such as PP or PET. As shown in FIG. 9, the electrically insulating sheet 83 is provided horizontally just above the radiation fins 81 so as not to hinder the flow of the cooling air supplied from the cooling fan 60.

  In FIG. 9, a thick solid line arrow indicates a flow of the cooling air supplied from the cooling fan 60. The thick broken arrow indicates the intake air flow introduced into the cooling fan 60.

  An exhaust port 108 is formed in a rear rear wall of the lower case 2C. A plurality of exhaust ports 108 are formed side by side to discharge cooling air from the cooling fan 60.

  A temperature sensor 25 is provided on the back surface (lower surface) of the upper lid 2B. The temperature sensor 25 is a contact-type temperature sensor that contacts the back surface (lower surface) of the upper lid 2B and measures the temperature of the top plate 20, and uses a thermistor-type temperature detecting element. The temperature measurement data of the temperature sensor 25 is transmitted to the temperature detection circuit 104 via the signal line 105, and the information on the temperature detected by the temperature detection circuit 104 is transmitted to the control unit 23. The thermistor (temperature detecting element) is provided so as to penetrate the center (hollow) of the induction heating coil 24 having a hollow annular planar shape as shown in the figure. An alternate long and short dash line CL indicates a vertical center line of the induction heating coil 24, and also coincides with the vertical center line of the temperature sensor 25.

  The temperature detection circuit 104 is connected to the temperature sensor 25 via a signal line 105, and receives temperature data measured by the temperature sensor 25.

  The control unit 23 and the temperature detection circuit 104 are mounted on a control circuit board 106. On the bottom surface of the lower case 2 </ b> C, a support protrusion 115 that supports the control circuit board 106 is provided. The plurality of support protrusions 115 are provided by integral molding.

  In the space on the front side of the partition wall 61, electric components such as a detection unit 22S that detects a touch operation of the second input operation unit 22 serving as a touch-type input unit are housed.

  The second embodiment does not provide a dedicated window for transmitting an infrared signal from the infrared signal transmitting / receiving unit 62. The infrared signal is configured to pass through a large square opening 2H formed in the center of the upper lid 2B.

  A first window 90 formed in the lower frame 10B is provided directly above the infrared light emitting element 62S and the infrared light receiving element 62R. The first window 90 is covered with a plastic or glass material that transmits infrared light.

  Although not shown, the infrared signal transmitting / receiving section 41 provided in the rice cooking section 1 is provided with an infrared light emitting element 41A, a support substrate 41B, and a communication control section 41C.

  A weight sensor 95 is fixed to the bottom surface of the lower case 2C. Although not shown, a strain sensor is disposed directly above the thick pillar-shaped leg portion 96. The weight is measured by the force of pressing the strain sensor by the leg portion 96, that is, the output from the strain sensor according to the weight of the rice cooker 100. The weight sensor 95 using the strain sensor has already been proposed for a long time, and a detailed description thereof will be omitted.

  The weight measurement signal indicating the measurement result of the weight sensor 95 is input to the control unit 23, and is transmitted from the control unit 23 to the infrared signal transmission / reception unit 41 by the infrared signal transmission / reception unit 62.

  The weight measurement signal received by the infrared signal transmission / reception unit 41 is input to the control unit 40 of the rice cooking unit 1 and used to determine a heating program (such as heating power or energizing time). The heating program for cooking rice is transmitted from the control unit 40 to the induction heating cooking unit 2 via the infrared signal transmission / reception unit 41, and the control unit 23 turns on the induction heating coil 24 or the power transmission coil 50 according to the heating program. Control.

  The weight sensor 95 can also measure the weight of the rice taken out of the inner pot 13 while the rice cooker 1 is placed on the induction heating cooker 2. In other words, when rice is taken out into a bowl or the like at the time of a meal (when it is served), the weight of the taken out rice can be measured.

  Therefore, the weight measurement signal of the rice taken out from the rice cooker 100 is transmitted from the induction heating cooking unit 2 to the rice cooking unit 1 via the infrared signal transmitting / receiving unit 62, and the control unit 40 of the rice cooking unit 1 is based on the transmission data. Can calculate the calories of rice. The caloric here means the amount of energy determined by the weight of the cooked rice.

  Although the calorie calculation may be performed by the control unit 23, the upper part of the second display unit 28 of the induction heating cooking unit 2 is covered by the rice cooking unit 1 when the rice cooking unit 1 is placed. , Invisible to the user. Therefore, data indicating the calorie calculation result needs to be transmitted to the rice cooker 1 via the infrared signal transmitter / receiver 62. However, the induction heating cooking unit 2 may be configured such that the calorie calculation result can be displayed on the side of the induction heating cooking unit 2 even when the rice cooking unit 1 is placed. For example, the position of the second display unit 28 of the induction heating cooking unit 2 may be changed so that the calorie calculation result can be displayed. In the induction heating cooking unit 2, a third display unit (calorie display unit) is provided at a position exposed to the outside even when the rice cooking unit 1 is placed, for example, on the front or side surface of the induction heating cooking unit 2. Is also good.

  Note that the control unit 40 of the rice cooking unit 1 is operated by the electric power obtained by the power receiving coil 51. The first display unit 42 also performs a display operation by the power supply unit 29 to which the power obtained by the power receiving coil 51 is supplied. This is the same as the configuration described in the first embodiment.

  Power is supplied to the power supply unit 29 from the power receiving coil 51, but power is supplied only during a period when the power transmission coil 50 of the induction heating cooking unit 2 is receiving a power transmission command by the control unit 23. . During the period when the rice cooker 1 is placed and the rice cooking operation is being performed, the power transmission coil 50 naturally receives the power transmission command from the controller 23 and supplies power to the power reception coil 51 in a non-contact manner.

Since the power supply unit 29 is provided as described above, the calorie display of the rice taken out from the rice cooker 100 can be performed even when the rice cooker 1 is separated from the induction heating cooker 2.
That is, in the second embodiment, since the control unit 40 is operated by the electric power from the power supply unit 29, even if the rice cooking unit 1 is moved to another place alone, the calorie data calculated before the movement is calculated. Is transmitted from the induction heating cooking unit 2 to the control unit 23 immediately upon each calculation. Therefore, in rice cooker 100 of the second embodiment, calorie data calculated before the movement can be displayed on first display unit 42 even after rice cooker 1 is separated. The calorie calculation results are stored in a time-series manner by a storage unit such as a semiconductor storage element attached to the control unit 23, and are stored in the rice cooking unit 1 even after the rice cooking unit 1 is returned to the induction heating cooking unit 2. ing.

Next, FIG. 10 will be described.
FIG. 10 is a vertical cross-sectional view showing the main part of the left part in a state where the rice cooking unit 1 and the induction heating cooking unit 2 overlap.
In FIG. 10, the reed switch 18 is fixed on a dedicated circuit board or a mounting plate 18A. The mounting plate 18A is fixed to the upper surface of the partition wall 61 (the front circular arc portion 61C). The reed switch 18 is arranged at the uppermost part inside the upper lid 2B.

  A gap G1 having a width W2 of about several mm to 20 mm is secured between the left side surface of the partition wall 61 and the lower case 2C.

Furthermore, since the reed switch 18 is installed on the upper right side of the partition wall 61 through which the cooling air CF (see FIG. 10) from the cooling fan 60 passes, the temperature of the atmosphere around the reed switch 18 is also kept low. It is.
In addition, since the permanent magnets 19 are also arranged at positions where the permanent magnets 19 are less likely to receive high heat, the operation of the reed switch 18 sensing the approach of the permanent magnets 19 can be reliably performed. The permanent magnet 19 turns on the reed switch 18 only when the rice cooker 1 is placed directly above the induction heating cooker 2.

  Under such conditions, when the reed switch 18 is closed (when the ON operation is performed), the control unit 23 detects the ON operation. Then, the control unit 23 determines that the rice cooker 1 is placed at the regular position, and permits input of the rice cooking operation in the rice cooker 1. That is, unless the reed switch 18 is turned ON, the input of the first input operation unit 15 of the rice cooking unit 1 is invalidated, and the rice cooking operation of the control unit 40 cannot be started.

  When the rice cooker 1 is placed on the induction heating cooker 2, the permanent magnet 19 is arranged at a position directly above the reed switch 18. A fixing plate 31 is provided on the upper surface of the lower frame 10B. The fixing plate 31 fixes the permanent magnet 19 to the upper surface of the lower frame 10B. The fixing plate 31 is formed of a material having a lower thermal conductivity than iron or aluminum, for example, a heat-resistant rubber.

The permanent magnet 19 is installed at a distance W1 from a heat shielding plate 93 surrounding the bottomed cylindrical inner pot 13 at an interval. Thus, the permanent magnet 19 is prevented from being repeatedly heated and deteriorated by long-term use.
The shielding plate 93 is the same as the shielding plate 93 shown in Embodiment 1 except that the bottom surface is removed. In other words, the shielding plate 93 and the container 17 are the same in the role of making the heat of the inner pot 13 difficult to transmit to the permanent magnet 19, and the container 17 may be provided instead of the shielding plate 93.

  With the above configuration, when the rice cooking section 1 is placed and the rice cooking operation is started, the external air is sucked from the intake port 77 by the operation of the cooling fan 60 as shown by the thick broken arrow in FIG. You.

Most of the intake air flow introduced into the induction heating cooking unit 2 is supplied to the induction heating coil 24 side.
In FIG. 9, a part of the cooling air passes below the induction heating coil 24 and a part of the cooling air passes between the radiation fins 81 of the heating circuit board 80, as indicated by thick solid line arrows. Then, the cooling air passes through a space directly below the heating circuit board 80. Then, the cooling air is discharged to the outside from an exhaust port 108 provided at a rear portion of the lower case 2C.

As is clear from the above description, rice cooker 100 of Embodiment 2 shown in FIGS. 8 to 10 has the following configuration. That is,
A box-shaped induction heating cooking unit 2 including a top plate 20, an induction heating coil 24 disposed below the top plate 20, and a second input operation unit 22 for inputting heating conditions of the induction heating coil 24. When,
The rice cooker 1 having the inner pot 13 heated by the induction heating coil 24 and the first input operation unit 15 for inputting rice cooking conditions;
The rice cooker 1 is heated by driving the induction heating coil 24 when placed on the top plate 20 of the induction heating cooker 2,
Inside the induction heating cooking unit 2, a cooling fan 60 for supplying cooling air for cooling the induction heating coil 24 and control information for rice cooking between the induction heating cooking unit 2 and the rice cooking unit 1 are provided. And an infrared signal transmitting and receiving unit 62 for transmitting the infrared signal including
The induction heating cooking unit 2 has an outer shell formed by vertically stacking a plastic upper lid 2B and a plastic lower case 2C having a size overlapping with the upper lid 2B,
The top plate 20 is overlapped and fixed on the upper lid 2B,
On the bottom upper surface of the lower case 2C, a partition wall 61 is formed integrally, and the partition wall 61 defines an air passage of the cooling fan 60 inside the induction heating cooking unit 2,
The infrared signal transmitting and receiving unit 62 is supported by the partition wall 61,
Further, the rice cooker 100 has a configuration in which a support 74 that receives a load on the upper lid 2B side is provided vertically integrally with the lower case 2C.

With this configuration, in rice cooker 100 described in Embodiment 2, since infrared signal transmitting / receiving section 62 is supported by partition wall 61, infrared signal transmitting / receiving section 62 can be installed without increasing the number of mounting components.
In addition, since the column 74 that receives the load on the upper lid 2B side is provided integrally with the lower case 2C, the mechanical strength of the outer case 2A of the induction heating cooking unit 2 is improved, and the rice cooking unit 1 is stable for a long time. It can be expected to improve the durability.

Further, as shown in FIG. 10, the reed switch 18 is installed on the upper right side of the partition wall 61 through which the cooling air CF (see FIG. 10) from the cooling fan 60 passes. The temperature of the atmosphere is also kept low.
Further, since the permanent magnet 19 is also arranged at a position where it is difficult to receive the high heat of the inner pot 13, it is possible to reliably perform the operation of detecting the approach of the magnet by the reed switch 18. Only when the rice cooker 1 is placed directly above the induction heating cooker 2, the permanent magnet 19 turns on the reed switch 18 and the control unit 23 senses the ON operation of the reed switch 18, and the rice cooker 1 The placement at the regular position is detected, and the input of the rice cooking operation in the rice cooking section 1 is permitted. That is, unless the reed switch 18 is turned ON, the input of the first input operation unit 15 of the rice cooking unit 1 is invalidated, and the rice cooking operation of the control unit 40 cannot be started.

Embodiment 3 FIG.
Rice cooker 100 of Embodiment 3 is shown in FIGS. FIG. 11 is a longitudinal sectional view of rice cooker 100 according to Embodiment 3. Rice cooker 1 shows only the lower end. FIG. 12 is a longitudinal sectional view of a main part of the left side portion of rice cooker 100 in FIG. The description of what overlaps with Embodiments 1 and 2 may be omitted. Further, the same or corresponding portions as those in Embodiments 1 and 2 are denoted by the same reference numerals.

  The rice cooker 100 according to the third embodiment is designed so that the mechanical strength of the induction heating cooking unit 2 on which the rice cooker 1 is placed is enhanced, and the rice cooker 1 can be stably placed.

Referring to FIG.
The induction heating cooking unit 2 includes a cooling fan 60, an induction heating coil 24, a power transmission coil 50 (not shown), a partition wall 61, and a control unit 23 (not shown) in the internal space of the induction heating cooking unit 2. ), A second input operation unit 22 (not shown), and an infrared signal transmitting / receiving unit 62. The induction heating coil 24 is formed in a disk shape. The partition wall 61 forms a first air passage SH1 and a second air passage SH2 in the internal space of the induction heating cooking unit 2. The infrared signal transmitting and receiving unit 62 constitutes an infrared communication unit.

  The induction heating coil 24 is installed on a support frame 63 made of heat-resistant plastic. The support frame 63 is formed with a large number of through holes (not shown) having a large opening area to increase air permeability.

  In the induction heating cooking unit 2, an outer shell case 2A is configured by a bottomed box-shaped lower case 2C that forms the outer shell, and an upper lid 2B that covers the entire upper surface of the lower case 2C. The lower case 2C and the upper lid 2B are formed by integral plastic molding. Therefore, the material is a thermoplastic plastic. In addition, the lower case 2C and the upper lid 2B are shaped so as to completely overlap when viewed in a plan view. In other words, the projected area when projecting vertically is the same. Further, since the upper lid 2B is used in a higher temperature environment than the lower case 2C, a material having higher heat resistance than the lower case 2C is selected.

  The plane dimensions of the lower frame 10B are designed to be close to the plane shape of the upper lid 2B. For this reason, the overall appearance of the rice cooker 100 is a box shape whose planar shape is close to a square, as in the first embodiment shown in FIG.

Inside the lower case 2C, a plurality of convex portions 2D serving as screw seats integrally formed at regular intervals are provided. As shown in FIG. 11, since the thickness of the convex portion 2D is configured to be several times larger than the thickness T1 of the wall of the lower case 2C, the upper lid 2B can be fixed to the convex portion 2D with the screw 64.
A metal fixing plate 65 fixed to the lower surface of the upper lid 2B by bonding or the like is provided on the lower surface of the upper lid 2B. The screw 64 penetrates through the fixing plate 65 and is screwed up to the protrusion 2D. In this way, the upper lid 2B is securely fixed to the lower case 2C, and the outer shell case 2A of the induction heating cooking unit 2 is formed.

  A bottom plate 66 is tightly fitted into a large circular hole 16 formed in the center of the lower frame 10B. The bottom plate 66 is formed of a plastic material having high heat resistance, for example, PET or PPS. Immediately above the bottom plate 66, the bottom of the inner pot 13 is arranged so as to be in contact with or close to. In addition, "PPS" means polyphenylene sulfide.

  The bottom plate 66 has a diameter larger than the maximum outer diameter of the induction heating coil 24 and is located directly above the induction heating coil 24.

  The flat top plate 20 is attached to the upper surface of the upper lid 2B so as to cover most of the upper lid 2B except for the front end and the rear end, and is formed of a heat-resistant crystallized glass or plastic plate. I have. Then, when the rice cooker 1 is placed on the induction heating cooker 2, the upper surface of the top plate 20 and the bottom plate 66 face each other with close contact or at a small interval.

  In FIG. 11, a dimension H1 indicates a height (range) that can be recognized as the upper lid 2B on the appearance of the induction heating cooking unit 2. Similarly, the dimension H2 indicates a height (range) that can be recognized as the lower frame 10B on the appearance of the induction heating cooking unit 2. The dimension H3 indicates the range of the upper case 10C.

  The second separation line (horizontal line PL2) shown in FIG. 11 is where the boundary between the upper lid 2B and the lower case 2C can be recognized on the appearance of the induction heating cooking unit 2. When manufacturing the outer shell of the induction heating cooking unit 2 at the position of the second separation line (horizontal line PL2), the lower case 2C and the upper lid 2B are overlapped.

A cylindrical mounting seat 70 is provided on the lower surface of the upper lid 2B, and is formed integrally with the lower surface of the upper lid 2B. At least two front and rear portions of the support frame 63 are fixed to the mounting seat 70 by screws 71.
A magnetic shield 72 is provided on the support frame 63. The magnetic shield 72 is installed on the support frame 63 so as to cover the entire periphery of the induction heating coil 24.

The lower surface of the upper lid 2B is provided with a convex portion 73 formed integrally with the lower surface of the upper lid 2B. On the upper surface of the lower case 2C, there is provided a column 74 integrally formed with the upper surface of the lower case 2C.
The support columns 74 and the projections 73 are formed at a plurality of locations in the rice cooking section 1 so as to always face each other. However, since the induction heating coil 24 is provided at the center of the lower case 2C, the support column 74 is formed around the induction heating coil 24, avoiding the position of the induction heating coil 24.

  When the lower case 2C and the upper lid 2B are overlapped with each other when the outer shell of the induction heating cooking unit 2 is manufactured, the columns 74 and the projections 73 face each other with a contact or a small gap therebetween. Therefore, it can be expected that the load applied to the upper surface of the upper lid 2B is supported by the support columns 74.

The partition wall 61 partitions the space enclosed by the lower case 2C and the upper lid 2B back and forth as shown in FIG.
A notch 61A is formed at the upper end of the partition wall 61.

  The lower surface of the upper lid 2B is provided with a projection 75 integrally formed with the lower surface of the upper lid 2B. A cushion material 76 such as elastic rubber is interposed between the protrusion 75 and the uppermost surface of the partition wall 61.

The infrared signal transmitting / receiving section 62 includes an infrared communication element 62A, a support substrate 62B, and a communication control section 62C.
The support substrate 62B is horizontally supported on a front side surface of the partition wall 61.

The notch 61A is formed at a position facing the infrared communication element 62A.
The cooling fan 60 constituted by an axial fan is disposed close to and directly above an intake port 77 formed on the front bottom wall surface of the lower case 2C. The intake port 77 is formed of a large number of small slits or small holes.

  A fan motor 60M is installed right above the intake port 77, and the cooling fan 60 is driven to rotate by the fan motor 60M. The fan motor 60M is fixed to the upper surface of a support leg 78 having a vertical U-shaped vertical cross-section, which is integrally formed with the lower case 2C so as to straddle above the intake port 77. There are one or two support legs 78, and a large space is secured around the support legs 78 so as not to impair air permeability.

  An auxiliary intake port 79 is formed at a position adjacent to the intake port 77. The auxiliary intake port 79 is constituted by a large number of small slit-shaped or small-diameter holes.

The concave portion 116 forms a tunnel-shaped space so that a user can insert the fingertips of both hands when the induction heating cooking unit 2 is transported alone or when the rice cooking unit 1 is transported while placed. The auxiliary intake port 79 is formed on a curved wall portion of the lower case 2C that forms the concave portion 116. As a result, two routes are secured for the intake path for the cooling fan 60.
That is, a first intake path from the intake port 77 on the bottom surface of the lower case 2C, and a second intake path from the auxiliary intake port 79 adjacent to the intake port 77 and formed on the inclined surface.

  The heating circuit board 80 mounts an inverter circuit that supplies high-frequency power to the induction heating coil 24, and has various electric components mounted thereon. A support plate 82 that supports the heating circuit board 80 is provided on the bottom surface of the lower case 2C. A plurality of support plates 82 are provided on the bottom surface of lower case 2C.

  Immediately above the radiation fins 81, an electrically insulating sheet 83 (or a thin plate) is provided. The electrically insulating sheet 83 is placed horizontally just above the radiation fins 81. The electrically insulating sheet 83 (or thin plate) is formed of a material such as PP or PET.

  In FIG. 11, a thick solid line arrow indicates a flow of the cooling air CF supplied from the cooling fan 60. The thick broken arrow indicates the intake air flow introduced into the cooling fan 60.

  In FIG. 11, an arrow LL indicates a line of sight from the position YE of the eyes of the user or the like. The front ends of the heating circuit board 80 and the support plate 82 are not directly visible through the auxiliary intake port 79. For this reason, even if chopsticks or other foreign substances (metal rods) used for meals are inserted, not only the aesthetic appearance, but are blocked by the auxiliary intake port 79, if the tip enters the lower case 2C temporarily, Does not reach the heating circuit board 80, and the electrical safety is high. Note that the position BP of the front end surface of the heating circuit board 80 is separated from the auxiliary intake port 79 by a predetermined distance or more so that the heating circuit board 80 cannot be directly viewed through the auxiliary intake port 79.

  Although not shown, a plurality of exhaust ports 108 (not shown) for discharging the cooling air from the cooling fan 60 are formed side by side on the rear rear wall of the lower case 2C.

  As shown in FIG. 11, the partition wall 61 divides the internal space of the induction heating cooking unit 2 into a space where the cooling fan 60 is located and a space where the infrared signal transmitting / receiving unit 62 is located. That is, with the partition wall 61 as a boundary, the second air passage SH2 is formed in the front, and the first air passage SH1 is formed in the rear.

  In the second embodiment, the projections 75 are formed when the upper lid 2B is formed, and the partition walls 61 are formed when the lower case 2C is formed. Therefore, the second embodiment can be manufactured more easily than forming a large column or wall. This is advantageous in terms of cost. Note that the partition wall 61 may be formed to extend to the lower surface of the upper lid 2B.

  The temperature sensor 25 is a contact-type temperature sensor that contacts the back surface (lower surface) of the upper lid 2B and measures the temperature of the top plate 20, and uses a thermistor-type temperature detecting element. The temperature measurement data of the temperature sensor 25 is transmitted to a temperature detection circuit 104 (not shown) via a signal line 105 (not shown), and information on the temperature detected by the temperature detection circuit 104 is transmitted to the control unit 23. You. The thermistor (temperature detecting element) is provided so as to penetrate the center (hollow) of the induction heating coil 24 having a hollow annular planar shape as shown in the figure. An alternate long and short dash line CL indicates a vertical center line of the induction heating coil 24, and also coincides with the vertical center line of the temperature sensor 25.

Further, the partition wall 61 divides the internal space of the induction heating cooking unit 2 back and forth at the rear portion of the second input operation unit 22.
Then, the input buttons 22A of the second input operation unit 22 and the electrical components such as switches that are opened and closed by the input buttons 22A are present in the second air passage SH2.
For this reason, the temperature rise of the second input operation unit 22 is suppressed.

  The amount of cooling air supplied from the cooling fan 60 via the notch 61A may be much smaller than the amount of cooling air supplied to the induction heating coil 24 side. Further, the space may not be provided with the notch 61A and may not be communicated with the first air passage SH1. That is, it is not always necessary to forcibly cool the portion of the second input operation unit 22 and the infrared signal transmission / reception unit 62 with air.

  The second window 91 doubles as a window for transmitting the infrared signal from the infrared signal transmitting / receiving unit 62 and a window for transmitting the infrared signal from the infrared signal transmitting / receiving unit 41. The second window 91 is formed at the front end of the upper lid 2B where the induction heating cooking unit 2 and the rice cooking unit 1 are vertically overlapped and are close to or in contact with each other. The second window 91 is covered with a glass or plastic plate that transmits infrared rays.

At a position directly above the second window 91, a first window 90 formed in the lower frame 10B is provided. The first window 90 also has the same function and structure as the second window 91, and is formed of the same material.
Note that two or more infrared communication elements 62A are provided instead of one. At least one is for infrared signal transmission, and at least one is for infrared signal reception. In this case, it is advantageous in terms of structure that a second window 91 described later can be shared if they are arranged side by side in an approaching state.

  The rice cooking section 1 also includes an infrared light emitting element 41A, a support substrate 41B, and a communication control section 41C.

  A shield plate 93 for heat shielding is provided around the bottomed cylindrical inner pot 13 at intervals around the bottomed cylindrical inner pot 13. The shielding plate 93 has a cylindrical shape with upper and lower openings, and is placed on the lower frame 10B. Due to the shield plate 93 for heat shielding, the installation space for the infrared signal transmitting and receiving unit 41 and the installation space for the inner pot 13 are two independent spaces through which air and steam do not flow. Therefore, it is possible to prevent a problem that the temperature of the infrared signal transmitting and receiving unit 41 is excessively increased due to the high heat of the inner pot 13 to shorten the life, deteriorate the performance, or cause malfunction.

  The weight sensor 95 has the same configuration as in the second embodiment. In addition, a weight measurement signal indicating the measurement result of the weight sensor 95 is input to the control unit 23, and transmitted from the control unit 23 to the infrared signal transmission / reception unit 41 by the infrared signal transmission / reception unit 62. As described above, similarly to the second embodiment, the weight measurement signal received by the infrared signal transmission / reception unit 41 is input to the control unit 40 of the rice cooking unit 1 and used to determine a heating program (thermal power or energizing time, etc.). Is done.

Next, FIG. 12 will be described.
The reed switch 18 is a magnetic proximity switch that closes an electrical contact by receiving a magnetic force. A permanent magnet 19 is provided at the bottom of the rice cooker 1.

  As described with reference to FIG. 11, the induction heating cooking unit 2 includes the cooling fan 60, the induction heating coil 24, the power transmission coil 50 (not shown), the partition wall 61, the control unit 23, and the infrared signal transmitting / receiving unit. 62. The induction heating coil 24 is formed in a disk shape. The partition wall 61 forms a first air passage SH1 and a second air passage SH2 in the internal space of the induction heating cooking unit 2. The infrared signal transmitting and receiving unit 62 constitutes an infrared communication unit.

  The induction heating coil 24 is installed on a support frame 63 called a coil base formed of heat-resistant plastic or the like. The support frame 63 is formed with a large number of through holes 63A having a large opening area in order to increase air permeability.

In the induction heating cooking unit 2, an outer shell case 2A is formed by a bottomed box-shaped lower case 2C constituting an outer shell of the induction heating cooking unit 2, and an upper lid 2B covering the entire upper surface of the lower case 2C. ing.
As described above, the lower surface of the upper lid 2B is provided with the projection 75 integrally formed with the lower surface of the upper lid 2B. A horizontally extending mounting plate 18A is fixed between the projection 75 and the uppermost surface of the partition wall 61. In other words, the mounting plate 18 </ b> A is pressed down on the upper surface of the partition wall 61 by the protrusion 75.

  In FIG. 12, a gap G2 formed with a lateral width W3 on the left side of the partition wall 61 is isolated from the first air passage SH1. On the other hand, it is in communication with the second air passage SH2, and a part of the cooling air introduced below the second input operation unit 22 reaches the gap G2. In other words, since the partition wall 61 is also used to support the reed switch 18, the number of components can be reduced. Further, similarly to the second embodiment, since the ambient temperature of the installation space of the permanent magnet 19 and the reed switch 18 does not increase, the permanent magnet 19 and the reed switch 18 do not deteriorate due to long-term use, and the safety is improved. I can expect that.

  With the above configuration, when the rice cooker 1 is placed and the rice cooking operation is started, the operation of the cooling fan 60 causes external air to flow from the intake port 77 and the auxiliary intake port 79 as shown by the thick broken arrow. It is sucked.

Most of the intake air flow introduced into the induction heating cooking unit 2 is supplied to the induction heating coil 24 side.
In FIG. 11, a part of the cooling air passes below the induction heating coil 24 and a part of the cooling air passes through the radiation fins 81 of the heating circuit board 80, as indicated by the cooling air CF indicated by a thick solid line arrow. , And further passes through a gap immediately below the heating circuit board 80 for cooling air. Then, the cooling air is discharged to the outside from an exhaust port 108 (not shown) provided at the rear of the lower case 2C.

  On the other hand, the cooling air introduced from the notch 61A into the second air passage SH2 cools various electric components inside the second air passage SH2, for example, the infrared communication element 62A of the infrared signal transmission / reception unit 62. Then, the air is discharged from an exhaust port different from the exhaust port 108 (not shown). Alternatively, the air is induced by the cooling air introduced into the first air passage SH1, and is discharged from the same exhaust port 108 to the outside.

  As is clear from the above description, the third embodiment has various characteristic configurations, so that the following effects can be expected.

(1) Part 1:
Inside the induction heating cooking unit 2, a cooling fan 60 for supplying cooling air for cooling the induction heating coil 24 and control information for rice cooking between the induction heating cooking unit 2 and the rice cooking unit 1 are provided. And an infrared signal transmitting and receiving unit 62 for transmitting the infrared signal including
The induction heating cooking unit 2 includes an outer shell case configured in a box shape by a plastic upper lid 2B and a plastic lower case 2C having a size overlapping with the upper lid 2B,
The top plate 20 is overlapped and fixed on the upper lid 2B,
A first support portion (mounting seat 70) for holding the induction heating coil 24 is integrally formed on the lower surface of the upper lid 2B,
A partition wall 61 extending upward beside the intake port 77 of the cooling fan 60 is integrally formed on the bottom upper surface of the lower case 2C, and a heat insulating material is provided between the upper end of the partition wall 61 and the lower surface of the upper lid 2B. A cushion material 76 made of
The infrared signal transmitting and receiving unit 62 is an electric rice cooker having a configuration in which the infrared signal transmitting and receiving unit 62 is disposed on the opposite side of the partition wall 61 from the cooling fan 60.

With this configuration, the airtightness between the upper end of the partition wall 61 and the lower surface of the upper lid 2B is improved, and an unnecessary wind from the cooling fan 60 side enters the space opposite to the cooling fan 60 with the partition wall 61 interposed therebetween. Inflow can be prevented.
Further, since the load of the upper lid 2B is received by the cushion member 76, the impact at the upper end of the partition wall 61 can be reduced, and the breakage thereof can be prevented.

(2) Part 2:
A heating circuit board 80 including an inverter circuit and the like is disposed immediately below the induction heating coil 24, and the induction heating coil 24 and the heating circuit board 80 are simultaneously placed by the cooling fan 60 from the side of the induction heating coil 24. In this configuration, cooling air is supplied in parallel.
Therefore, a cooling air passage (first air blowing passage SH1) with the cooling fan 60 located upstream is formed and arranged inside the induction heating cooking unit 2, and a straight flow toward the exhaust port 108 can be formed.
Thereby, it can be expected that the cooling performance of the internal space of the induction heating cooking unit 2 is improved.

(3) Part 3:
At least the infrared communication element 62A of the infrared signal transmitting / receiving section 62 is mounted on a support substrate 62B supported by the partition wall 61.
For this reason, since it is the structure which supports the infrared communication element 62A using the partition wall 61, a structure can be simplified and it becomes advantageous on a manufacturing cost.

(4) Part 4:
An embodiment in which a member constituting an outer shell case 2A of the induction heating cooking unit 2 is constituted by a plastic upper lid 2B and a plastic bottomed box-shaped lower case 2C having a size overlapping with the upper lid 2B. It is.
For this reason, the upper lid 2B and the lower case 2C are each formed by integral molding of plastic, and the upper lid 2B and the lower case 2C are connected to each other, whereby the box-shaped outer shell case 2A can be easily manufactured.

(5) Part 5:
An embodiment in which a member constituting an outer shell case 2A of the induction heating cooking unit 2 is constituted by a plastic upper lid 2B and a plastic bottomed box-shaped lower case 2C having a size overlapping with the upper lid 2B. It is. On the lower surface of the upper lid 2B, a mounting seat 70 for supporting a coil base (support frame 63) made of heat-resistant plastic for supporting the induction heating coil 24 is formed by integral molding, so that a structural member for supporting the induction heating coil 24 is formed. The number of points can be reduced, which is advantageous in manufacturing cost.

(6) Part 6:
A second window 91 for transmitting an infrared signal for the infrared signal transmitting and receiving unit 62 is formed in a part of the upper lid 2B where the induction heating cooking unit 2 and the rice cooking unit 1 overlap and are close to or in contact with each other. I have.
Moreover, when the rice cooker 1 is used, the second window 91 is covered from above by the rice cooker 1, so that unnecessary light does not enter the second window 91 as disturbance light, and It can be expected that infrared communication between the induction heating cooking unit 2 and the induction heating cooking unit 2 is reliably performed.

(7) Part 7:
In at least two places around the induction heating coil 24, columns 74 extending upward from the upper surface of the lower case 2 </ b> C are formed so as to avoid a heating region by the induction heating coil 24.
The support column 74 receives a load from the upper lid 2B side. In other words, when the rice cooker 1 is placed, it is possible to prevent the top plate 20 that receives the weight from bending downward.
For this reason, since the positional relationship between the rice cooker 1 and the induction heating cooker 2 is stabilized for a long period of time, the rice cooking operation can be performed safely.

(8) Part 8:
As shown in FIG. 12, since the reed switch 18 that operates by sensing the presence of the permanent magnet 19 of the rice cooker 1 is installed on the partition wall 61, the partition wall 61 is also used to support the reed switch 18. Therefore, the number of parts can be reduced, and the manufacturing cost can be reduced.
Further, since the reed switch 18 is disposed in the gap G2 partitioned by the partition wall 61, the ambient temperature of the installation space of the reed switch 18 does not increase, and it is expected that the life of the reed switch 18 is extended.

(Summary of Embodiment 3)
Rice cooker 100 shown in Embodiment 3 had the following configuration. That is,
A rice cooker 1 for accommodating an object to be cooked therein; and an induction heating cooker 2 for heating and cooking the rice cooker 1 placed on an upper surface thereof,
The rice cooking unit 1 includes an upper case 10C forming an outer shell, and an annular lower frame 10B formed of a heat-resistant material provided below a lower end surface of the upper case 10C,
The induction heating cooking unit 2 includes an upper lid 2B made of a heat-resistant material having a top plate 20 on which the rice cooking unit 1 is placed, and a lower case 2C having a bottom whose upper surface opening is closed by the upper lid 2B.
Between the upper lid 2B and the lower case 2C, at least one of the support columns 74 and the partition wall 61 formed integrally with at least one of the upper lid 2B and the lower case 2C is provided.

  According to the rice cooker 100 of the third embodiment, the mechanical strength of the induction heating cooking unit 2 on which the rice cooking unit 1 is placed, that is, the strength of the load in the vertical direction is enhanced, and the induction heating cooking unit 2 is stable. Induction heating can be carried out while being supported, and stable rice cooking operation can be expected.

Embodiment 4 FIG.
FIG. 13 is an enlarged longitudinal sectional view showing a front part of rice cooker 100 according to Embodiment 4. The description of the same components as those of the first to third embodiments may be omitted. Further, the same or corresponding portions as those in Embodiments 1 to 3 are denoted by the same reference numerals.

  Rice cooker 100 according to Embodiment 4 is obtained by changing the installation position of infrared signal transmitting / receiving section 62.

FIG. 13 will be described. The second window 91 is formed in the upper lid 2B, and is provided for transmitting infrared signals.
The lower frame 10B made of heat-resistant plastic constitutes the bottom surface of the rice cooker 1 and forms a first window 90 for transmitting infrared signals.

  The support substrate 62B supports the infrared communication element 62A of the infrared signal transmitting / receiving unit 62. The support substrate 62B is supported horizontally with the left end connected to the partition wall 61.

  In FIG. 13, a range 22W of the second input operation unit 22 in the front-back direction is as indicated by a solid arrow. This will be described in detail later.

  In the second input operation unit 22, input buttons 22A of a plurality of press-type electronic switches 97 are arranged in a horizontal row at a constant interval. When the input button 22A at the top of each electronic switch 97 is pressed, the push rod 97A made of plastic moves downward, thereby closing the internal contact of the electronic switch 97 and generating a signal.

  The circuit board 98 mounts each electronic switch 97. The protection sheet 99 (or the protection plate) is formed of a thin and curved plastic material, covers the input button 22A in a sealed state, and prevents water from entering from above. When the protection sheet 99 is pressed by the user's finger, the input button 22A moves downward by a small dimension, and the internal contact of the electronic switch 97 closes.

  A through hole 101 is formed in a plastic support frame 102. The through-hole 101 has a larger diameter than the outer dimensions of the input button 22A so as to allow the input button 22A to move up and down.

The second input operation unit 22 is provided with a second display unit 28 (not shown) for displaying an operation input result of the second input operation unit 22. The second display unit 28 includes a liquid crystal display screen, a light emitting diode (LED), and the like. The LED illuminates the protection sheet 99 of the second input operation unit 22 with light from below, displays a specific portion of the protection sheet 99 in red or yellow, and displays the input result of each electronic switch 97 to the user. I do.
The liquid crystal display screen has a configuration in which an opening (not shown) is provided in a part of the protective sheet 99, the opening is covered with a transparent sheet from above, and the liquid crystal display screen is set to face the opening. .

  In the fourth embodiment, a description will be given of enabling or disabling the input function of the second input operation unit 22. When the input function is invalidated, the display function of the second display unit 28 is also invalidated at the same time, and the screen display is turned off. Conversely, when the input function of the second input operation unit 22 becomes valid (when it is activated for the first time and when the invalidation is released), the display function of the second display unit 28 is also activated at the same time. Thus, the display operation is performed. When the control unit 23 detects that the rice cooker 1 is placed, the input function of the second input operation unit 22 is invalidated. The reed switch 18 described in the second and third embodiments is an example of a unit that detects that the rice cooker 1 is placed.

In FIG. 13, a wall opening 30 is formed at the lower end of the rice cooker 1.
The protruding portion 103 (projecting ridge) is configured to narrow the facing distance S between the lower frame 10 </ b> B constituting the bottom surface of the rice cooking unit 1 and the upper surface of the second input operation unit 22. The protrusion 103 suppresses the flow of hot air generated at a position directly above the induction heating coil 24 behind the protrusion 103 from flowing over the protrusion 103 toward the second input operation unit 22. For this reason, when the rice cooking operation is performed, even if the bottom surface of the rice cooker 1 is heated by the induction heating coil 24, the portion of the second input operation unit 22 is prevented from being overheated.

  After the use of the rice cooker 1 is completed, the rice cooker 1 is removed from above the induction heating cooker 2, and then the second input operation unit 22 is hot, and immediately another heating is performed by the induction cooker 2 alone. It does not cause the situation that cooking cannot be started.

  In FIG. 13, a range 22 </ b> W indicates the width of the second input operation unit 22 in the front-rear direction, and is about 50 mm to 70 mm.

The upper lid 2B has a hem portion 2BU integrally formed so that the inner side extends downward at a fixed distance at the lower edge of the entire periphery.
The skirt portion 2BU has a function of fitting to the upper edge of the lower case 2C as shown in FIG. For this reason, in a state where the lower case 2C and the upper cover 2B are overlapped, the upper cover 2B is tightly fitted to the lower case 2C and does not inadvertently move in the front-back or left-right direction. Therefore, as a result, the strength of the outer shell case 2A of the induction heating cooking unit 2 can be improved by a simple structure.

(Summary of Embodiment 4)
Rice cooker 100 according to the fourth embodiment is provided with projections 103 (protrusions) on the upper surface of upper lid 2B to form lower frame 10B constituting the bottom surface of rice cooker 1 and upper surface of second input operation unit 22. Is narrowed. For this reason, there is an effect that the hot air generated at a position directly above the induction heating coil 24 behind the projection 103 is prevented from flowing over the projection 103 and toward the second input operation unit 22. .

Embodiment 5 FIG.
FIG. 14 is a plan view showing induction heating cooking unit 2 of rice cooker 100 according to Embodiment 5. FIG. 15 is a vertical sectional view taken along line X2-X2 in FIG. In FIG. 15, the rice cooker 1 shows only the lower end. The description of the same components as those of the first to fourth embodiments may be omitted. In addition, the same or corresponding parts as those in Embodiments 1 to 4 are denoted by the same reference numerals.

  Rice cooker 100 according to Embodiment 5 is obtained by changing the installation position of infrared signal transmitting / receiving section 62. Further, a feature is that the installation position of the power transmission coil 50 is set on the upstream side of the first ventilation path SH1 through which the cooling air of the cooling fan 60 flows as much as possible.

14 and 15, the lower frame 10B forming the bottom of the rice cooker 1 has a step 10BT integrally formed with the inner edge extending upward at a fixed distance at the upper edge of the entire periphery.
As shown in FIG. 15, the step portion 10BT has a function of fitting to the lower edge of the upper case 10C. Therefore, when the upper case 10C and the lower frame 10B overlap, the upper case 10C is tightly fitted to the outer peripheral edge of the lower frame 10B, and does not inadvertently move in the front-back or left-right direction. Therefore, as a result, the strength of outer shell case 2A of rice cooker 1 can be improved with a simple structure.

In the second input operation unit 22 on the front side of the induction heating cooking unit 2, the entire surface of the second input operation unit 22 is covered with a surface plate 22P such as a glass plate.
In the fifth embodiment, a touch-type input method using surface plate 22P is adopted. When a user touches a specific position on surface plate 22P with a finger or the like, the touch operation is sensed and control unit 23 is controlled. Input can be performed. For example, a capacitive touch switch is used. The detection unit 22S is configured to detect a touch operation of a finger or the like and transmit a signal corresponding to a position touched by the finger to the control unit 23.

A large square opening 2H is formed in the center of the upper lid 2B. The upper part of the opening 2H is covered with a top plate 20 made of crystallized glass or heat-resistant plastic.
On the back surface (lower surface) of the top plate 20, a contact-type temperature sensor 25 that measures the temperature by contacting the back surface of the top plate 20 is provided. As the temperature sensor 25, for example, a thermistor is used.

  The temperature detection circuit 104 is configured to receive temperature data measured by the temperature sensor 25, and is connected to the temperature sensor 25 via a signal line 105. As shown in FIG. 15, the temperature sensor 25 is installed so as to penetrate the center (hollow portion) of the hollow annular induction heating coil 24.

  The temperature data detected by the temperature detection circuit 104 is transmitted to the control unit 23 mainly composed of a microcomputer. The temperature detection circuit 104 and the control unit 23 are mounted on the control circuit board 106. The control circuit board 106 is fixed at a fixed position by a supporting protrusion 115 integrally formed and protruded from the bottom surface of the lower case 2C. The support protrusion 114 is formed similarly to the support protrusion 115 and supports the heating circuit board 80.

  In FIG. 15, the temperature detection circuit 104 and the control unit 23 appear to be located near the rear side of the heat radiation fin 81, but are not actually right behind the heat radiation fin 81 but slightly leftward as shown in FIG. 14. I have. However, it is desirable from the viewpoint of cooling performance to provide the first air passage SH1 at a position immediately before an exhaust port 108 described later.

  A plurality of exhaust ports 108 are formed on the rear surface (rear wall) of the lower case 2C. The exhaust port 108 is formed of a narrow slit-shaped hole or a large number of small-diameter holes so that foreign matter does not enter the lower case 2C.

  The cooling fan 60 such as an axial fan is installed just above and near the intake port 77 so that the rotation axis of the cooling fan 60 is vertical. A fan motor 60M is fixed on the elongated support at the center of the fan case 60C.

As shown in FIG. 15, the second separation line (horizontal line PL <b> 2) is a position where the lower case 2 </ b> C and the upper lid 2 </ b> B constituting the outer shell case 2 </ b> A of the induction heating cooking unit 2 are overlapped.
The support column 74 and the partition wall 61 are integrally formed from the bottom surface of the lower case 2C up to the height (position) of the second separation line.
For this reason, when molding the lower case 2C with a thermoplastic material (plastic), it can be easily adjusted to the height of the lower case 2C. Therefore, the columns 74 and the partition walls 61 can be easily formed in the manufacturing process.

  In the manufactured lower case 2C, the support column 74 and the partition wall 61 are aligned with the height of the second separation line, and there is no portion protruding above the second separation line (horizontal line PL2). Therefore, there is also an advantage that the operation of stacking or moving by a person or a machine can be easily performed during transportation or storage at a manufacturing site.

  The reed switch 18 in FIG. 14 is a magnetic proximity switch that closes an electrical contact by receiving a magnetic force. The reed switch 18 is supported on the right side surface of a front arc portion 61C that forms a part of the partition wall 61. The space in which the reed switch 18 is installed is outside the first air passage SH1 of the cooling fan 60 and is not actively cooled, but is located far from the induction heating coil 24 and the bottom plate 66 of the rice cooker 1. is there. Therefore, there is no concern that the space in which the reed switch 18 is installed is heated by the heat generated in the induction heating coil 24 and the bottom plate 66 of the rice cooker 1.

In the fifth embodiment, unlike the second embodiment, the dedicated second window 91 for the infrared signal transmitting / receiving unit 41 and the infrared signal transmitting / receiving unit 62 is not provided, and the top plate 20 formed of an infrared transmitting material is used. Utilizes infrared communication.
Therefore, processing for providing the second window 91 and parts such as an infrared transmitting plate that covers the second window 91 are not required, which is advantageous in manufacturing cost.

In the fifth embodiment, as in the second embodiment, the cooling air from the cooling fan 60 is forcibly introduced into the space where the infrared signal transmitting and receiving unit 62 is installed. Moreover, in the fifth embodiment, cooling is performed by a cooling air different from the cooling air flowing around the induction heating coil 24 and the power transmission coil 50 that generate the highest temperature. Therefore, the infrared signal transmitting and receiving unit 62 does not receive the heat of the induction heating coil 24 and the power transmission coil 50, and is not heated to a temperature that causes performance degradation or the like.
The reed switch 18 is located in a space opposite to the induction heating coil 24 with the partition wall 61 interposed therebetween. Therefore, the reed switch 18 is located at a position separated from the induction heating coil 24 and is not heated by the induction heating coil 24.

  Also in the fifth embodiment, the wall surface opening 30 has a shape formed by cutting out the bottom wall 10P of the lower frame 10B, and a plurality of the wall openings 30 are provided at intervals along the entire circumference of the lower frame 10B (the illustrated example). 12) are formed. As in the first embodiment, the wall opening 30 has an effect of releasing the heat of the heated bottom surface of the rice cooker 1 to the outside.

(Summary of Embodiment 5)
Rice cooker 100 described in Embodiment 5
An induction heating cooking unit 2 including a top plate 20, an induction heating coil 24 disposed below the top plate 20, and a second input operation unit 22 for inputting a heating condition of the induction heating coil 24;
The rice cooker 1 includes an inner pot 13 that accommodates the rice to be cooked and is heated by the induction heating coil 24, and a first input operation unit 15 that inputs a rice cooking condition.
The rice cooker 1 is heated by driving the induction heating coil 24 when placed on the top plate 20 of the induction heating cooker 2,
Inside the induction heating cooking unit 2, a cooling fan 60 for supplying cooling air for cooling the induction heating coil 24 and control information for rice cooking between the induction heating cooking unit 2 and the rice cooking unit 1 are provided. And an infrared signal transmitting and receiving unit 62 for transmitting the infrared signal including
The induction heating cooking unit 2 includes an outer shell case 2A formed in a box shape by a plastic upper lid 2B and a plastic lower case 2C having a size overlapping the upper lid 2B,
The top plate 20 is overlapped and fixed on the upper lid 2B,
On the upper surface of the bottom of the lower case 2C, there is formed a column 74 that rises vertically so that the uppermost portion thereof reaches the upper lid 2B side.

  According to the rice cooker 100 of the fifth embodiment, the mechanical strength of the induction heating cooking unit 2 on which the rice cooking unit 1 is placed, that is, the strength of the load in the vertical direction is increased, and the induction heating cooking unit 2 is stabilized. Induction heating can be carried out while being supported, and stable rice cooking operation can be expected.

Embodiment 6 FIG.
FIG. 16 is a longitudinal sectional view showing the first half of induction heating cooking unit 2 in rice cooker 100 according to Embodiment 6. The description of the same components as those of the first to fifth embodiments may be omitted. Further, the same reference numerals are given to the same or corresponding parts as in the first to fifth embodiments.

Rice cooker 100 according to Embodiment 6 is characterized in that the intake path of cooling fan 60 is changed, and external air is introduced from intake port 177 provided on the front surface of lower case 2C.
Another feature is that the infrared signal transmitting / receiving unit 62 is provided not in the first air passage SH1 but in the first air intake passage KU.

An intake port 177 is formed on the front surface of the lower case 2C. The intake port 177 is formed with a plurality of narrow slits or a plurality of small through holes adjacent to each other, similarly to the intake port 77 described in the first to fifth embodiments.
A heat-resistant sealing material 110 such as silicone rubber is provided on the front edge of the top plate 20. The sealing material 110 has a cross-sectional shape that sandwiches the front edge of the top plate 20 from above and below.

  The top plate 20 is supported from below by the support columns 74 via the sealing material 110. That is, the projection 73 integrally formed on the lower surface of the upper lid 2B is in a form in which it contacts the uppermost surface of the column 74 immediately below the projection 73 and is supported by the column 74 from below. For this reason, even if the user frequently presses the surface plate 22P for the touch-type input operation of the second input operation unit 22, the upper lid 2B is held by the support columns 74, so that the upper lid 2B bends downward. Such a deformation does not occur, and a stable input operation can be performed for a long period of time.

  Further, since the infrared signal transmitting / receiving unit 62 is provided in the first intake path KU linearly formed from the intake port 77 to the cooling fan 60, the cooling fan 60 cools the induction heating coil 24. The infrared signal transmission / reception unit 62 can be cooled by the cold air before performing.

  The electronic circuit such as the touch input detection unit 22S and the liquid crystal display screen constituting the second display unit 28 can also be cooled by the cooling air.

  When heating the rice cooker 1, since the cooling fan 60 is always operated to cool the induction heating coil 24, the infrared signal transmitter / receiver 62, the detector 22S, and the like use the cooling air during the rice cooking operation. Cooled continuously.

The lower case 2C is provided with a support plate 111 for the circuit board 98. The support plate 111 is fixed to a specified position above the lower case 2C by a column 117 formed into a column shape by integral molding from the bottom surface of the lower case 2C.
A support leg 112 and a support leg 113 are provided on the upper surface of the support plate 111. The support legs 112 and 113 are formed from an electrically insulating material.

(Summary of Embodiment 6)
Rice cooker 100 described in Embodiment 6
An induction heating cooking unit 2 including a top plate 20, an induction heating coil 24 disposed below the top plate 20, and a second input operation unit 22 for inputting a heating condition of the induction heating coil 24;
The rice cooker 1 includes an inner pot 13 that accommodates the rice to be cooked and is heated by the induction heating coil 24, and a first input operation unit 15 that inputs a rice cooking condition.
The rice cooker 1 is heated by driving the induction heating coil 24 when placed on the top plate 20 of the induction heating cooker 2,
Inside the induction heating cooking unit 2, a cooling fan 60 for supplying cooling air for cooling the induction heating coil 24 and control information for rice cooking between the induction heating cooking unit 2 and the rice cooking unit 1 are provided. And an infrared signal transmitting and receiving unit 62 for transmitting the infrared signal including
The induction heating cooking unit 2 includes an outer shell case 2A formed in a box shape by a plastic upper lid 2B and a plastic lower case 2C having a size overlapping the upper lid 2B,
The top plate 20 is overlapped and fixed on the upper lid 2B,
On the upper surface of the bottom of the lower case 2C, there is formed a column 74 that rises vertically so that the uppermost portion thereof reaches the upper lid 2B side.

  According to rice cooker 100 of the sixth embodiment, the mechanical strength of induction heating cooking unit 2 on which rice cooking unit 1 is placed, that is, the strength of the load in the vertical direction is enhanced. Therefore, induction heating can be performed while the rice cooking unit 1 is stably supported by the induction heating cooking unit 2, and a stable rice cooking operation can be expected.

Embodiment 7 FIG.
FIG. 17 is a longitudinal sectional view showing a lower portion of rice cooker 1 and induction heating cooker 2 in rice cooker 100 according to Embodiment 7. The description of the same components as those of the first to sixth embodiments may be omitted. Further, the same or corresponding portions as those in Embodiments 1 to 6 are denoted by the same reference numerals.

Rice cooker 100 according to Embodiment 7 is obtained by improving upper lid 2B and lower case 2C of induction heating cooking unit 2.
In FIG. 17, a step 2E is formed at the edge of the opening 2H. The step 2E is formed over the entire periphery (front and rear and left and right) of the edge of the opening 2H to support the top plate 20 from below. The step 2E is formed thicker than other portions of the upper lid 2B in order to increase mechanical strength.

The step portion 2E is formed integrally at the same time as the injection molding of the upper lid 2B, and is formed such that the position of the second separation line (horizontal line PL2) is the lower limit.
On the other hand, the partition wall 61 has such a height dimension as to contact the lower surface of the step portion 2E as shown in FIG. In other words, the position of the second separation line (horizontal line PL2) is the upper limit position.

  The sealing material 110 is formed of a material such as silicone rubber to protect the peripheral end surface of the top plate 20 from impact and to prevent spilled water and cooking liquid from entering from the top plate 20 upper surface.

  The step 2E indirectly supports the peripheral edge of the top plate 20 by supporting the sealing material 110. In addition, between the step part 2E and the sealing material 110, in order to further firmly fix, it may be bonded by an adhesive.

  Although not shown, the partition wall 61 is provided with a plurality of through holes through which external air sucked from the intake port 77 by the cooling fan 60 passes. Arrows indicated by broken lines indicate the flow of air sucked by the cooling fan 60.

  The power transmission coil 50 that supplies power for the control unit 40 and the first display unit 42 of the rice cooking unit 1 is fixed on support legs 119 formed closer to the cooling fan 60 than the partition wall 61. The support leg 119 is integrally formed from the bottom surface (bottom wall portion) of the lower case 2C during the injection molding of the lower case 2C.

  On the upper surface of the partition wall 61, a mounting plate 120 that directly supports the power transmission coil 50 is provided. The mounting plate 120 is formed from an electrically insulating material. After fixing the power transmission coil 50, the mounting plate 120 is fixed to the upper surface of the partition wall 61.

  The infrared signal transmitting / receiving unit 62 is provided on a support substrate 62B having a rear end fixed to the partition wall 61. The support substrate 62B is fixed on the support legs 118. The support legs 118 are integrally formed from the bottom surface of the lower case 2C during the injection molding of the lower case 2C. When viewed from the cooling fan 60, the infrared signal transmitting and receiving unit 62 is located upstream of the flow of the cold airflow to be sucked.

  A surface plate 122P is provided on the surface of the second input operation unit 22. The front plate 122P is formed in a belt-like shape that is long in the left-right direction and covers the surface of the touch-input second input operation unit 22. The surface plate 122P is a thin plate formed from a heat-resistant plastic material. The front plate 122P is provided with a through hole 123 formed corresponding to the second window 91.

  In the seventh embodiment, the second input operation unit 22 and the infrared signal transmitting / receiving unit 62 are linearly arranged between the intake port 77 and the cooling fan 60. For this reason, even when the rice cooker 1 is induction-heated, or when the induction cooker 2 is operated by itself to perform heating cooking, the air from the intake port 77 to the cooling fan 60 is allowed to pass through. The second input operation unit 22 and the infrared signal transmission / reception unit 62 are efficiently cooled. Also, a part of the air from the intake port 77 to the cooling fan 60 passes around the power transmission coil 50 before reaching the cooling fan 60, so that the power transmission coil 50 is also cooled at the same time.

  In the rice cooker 100 of the seventh embodiment, similarly to the first embodiment, the rice cooker 1 has an upper case 10C forming an outer shell, and an annular case formed of a heat-resistant material provided below the upper case 10C. And a lower frame 10B. In the lower frame 10B, a bottom wall 10P protruding from the bottom surface toward the induction heating cooking unit 2 is provided along the outer edge of the bottom surface.

  Further, in the seventh embodiment, the lowermost end surface of the bottom wall 10P extends vertically below the second separation line (horizontal line PL2). For this reason, the lower part of the bottom wall 10P faces the upper end of the front surface of the lower case 2C beyond the upper lid 2B. As a result, even if the rice cooker 1 attempts to inadvertently move backward, the lower portion of the bottom wall 10P hits the front surface of the lower case 2C and is prevented from moving.

  Similarly, the lowermost end surface of the bottom wall 10P extends vertically further below the second separation line (horizontal line PL2) also on the rear side and both left and right sides of the lower frame 10B. Unnecessary movement in the direction is prevented. For this reason, in rice cooker 100 of the seventh embodiment, when rice cooker 1 is placed on induction heating cooker 2, as in the first embodiment, there is an advantage that the position of rice cooker 1 is stabilized. There is.

At the time of induction heating of the rice cooker 1, the upper surface of the top plate 20 and the lower surface of the lower frame 10B of the rice cooker 1 come into contact or approach each other with a small gap. When the rice cooker 1 is separated from the induction heating cooker 2 and placed on a table or a table, an air layer is provided between the lower part of the rice cooker 1 and the table or the table. Is secured.
In the seventh embodiment, the height of the bottom wall 10P in the vertical direction can be increased as compared with the first embodiment. Therefore, when the rice cooker 1 is placed on the upper surface of furniture such as a table, the facing distance between the rice cooker 1 and the furniture and the like becomes large, and the volume of the gap becomes large. Can be further reduced.

As is clear from the above description, rice cooker 100 of Embodiment 7 shown in FIG. 17 has the following configuration. That is,
A box-shaped induction heating cooking unit 2 including a top plate 20, an induction heating coil 24 disposed below the top plate 20, and a second input operation unit 22 for inputting heating conditions of the induction heating coil 24. When,
The rice cooker 1 having the inner pot 13 heated by the induction heating coil 24 and the first input operation unit 15 for inputting rice cooking conditions;
The rice cooker 1 is heated by driving the induction heating coil 24 when placed on the top plate 20 of the induction heating cooker,
Inside the induction heating cooking unit 2, a cooling fan 60 for supplying cooling air for cooling the induction heating coil, and control information for rice cooking between the induction heating cooking unit 2 and the rice cooking unit 1 are included. An infrared signal transmitting / receiving unit 62 for transmitting an infrared signal, and a power transmission coil 50 for supplying power for the control unit 23 of the rice cooker 1, respectively.
The induction heating cooking unit 2 has an outer shell formed by vertically stacking a plastic upper lid 2B and a plastic lower case 2C having a size overlapping with the upper lid 2B,
The top plate 20 is overlapped and fixed on the upper lid 2B,
A partition wall 61 extending in the direction of the upper lid 2B and receiving the load of the upper lid 2B is integrally formed on the bottom upper surface of the lower case 2C,
The power transmission coil 50 is the rice cooker 100 having a configuration in which the power transmission coil 50 is supported by support legs 119 projecting upward from the bottom of the lower case 2C.

  According to the configuration of the seventh embodiment, since partition wall 61 receives a load from upper lid 2B side, when rice cooker 1 is placed, top plate 20 that receives the weight of rice cooker 1 curves downward. Can be prevented.

Therefore, the positional relationship between the rice cooker 1 and the induction heating cooker 2 is stabilized for a long period of time, so that the rice cooking operation can be reliably controlled.
In addition, the position of the power transmission coil 50 is also supported from below by the support legs 119 and is stabilized. Therefore, the relative distance between the position of the power transmission coil 50 and the power reception coil 51 on the rice cooker 1 side does not change even after long-term use, and a stable power supply operation can be expected.

Furthermore, rice cooker 100 of Embodiment 7 shown in FIG.
A box-shaped induction heating cooking unit 2 including a top plate 20, an induction heating coil 24 disposed below the top plate 20, and a second input operation unit 22 for inputting heating conditions of the induction heating coil 24. When,
The rice cooker 1 having the inner pot 13 heated by the induction heating coil 24 and the first input operation unit 15 for inputting rice cooking conditions;
The rice cooker 1 is heated by driving the induction heating coil 24 when placed on the top plate 20 of the induction heating cooker 2,
Inside the induction heating cooking unit 2, a cooling fan 60 for supplying cooling air for cooling the induction heating coil, and control information for rice cooking between the induction heating cooking unit 2 and the rice cooking unit 1 are included. An infrared signal transmitting and receiving unit 62 for transmitting an infrared signal,
The induction heating cooking unit 2 has an outer shell formed by vertically stacking a plastic upper lid 2B and a plastic lower case 2C having a size overlapping with the upper lid 2B,
The top plate 20 is overlapped and fixed on the upper lid 2B,
A partition wall 61 extending in the direction of the upper lid 2B and receiving the load of the upper lid 2B is integrally formed on the bottom upper surface of the lower case 2C, and the partition wall 61 defines an air passage of a cooling fan inside the induction heating cooking unit 2. ,
The rice cooking section 1 includes an upper case 10C forming an outer shell, and an annular lower frame 10B formed of a heat-resistant material provided below the upper case 10C,
In the lower frame 10B, a bottom wall 10P protruding from the bottom toward the induction heating cooking unit 2 extends downward to a position close to and facing the surface of the lower case 2C, and the bottom wall 10P is a type of movement prevention means ( Stopper).

  According to the seventh embodiment, it is possible to prevent the upper surface of furniture such as a table on which rice cooker 1 is placed from being excessively heated, so that the usability is improved and the induction cooker 2 is excessively horizontal. Movement in the direction can be prevented.

  In the seventh embodiment, the wall surface opening 30 such as a notch is provided in the bottom wall 10P, but the wall surface opening 30 is not necessarily required.

Embodiment 8 FIG.
FIG. 18 shows a main part of rice cooker 100 of the eighth embodiment. FIG. 18 is an enlarged longitudinal sectional view showing a front part of induction heating cooking unit 2 and a lower front part of rice cooking unit 1 in rice cooker 100 according to Embodiment 8.
The description of the same components as those of the first to seventh embodiments may be omitted. Further, the same or corresponding portions as those in Embodiments 1 to 7 are denoted by the same reference numerals.

Rice cooker 100 according to Embodiment 8 is an improvement of upper case 10C of rice cooker 1.
The lower frame 10B is formed in a ring shape with a plastic material. The inner diameter of the lower frame 10B is formed larger than the outer diameter of the outer shell case 2A of the induction heating cooking unit 2, and a gap GX (gap) of several mm or more is secured between the outer shell case 2A and the lower frame 10B. Have been.
Inside the bottom wall 10P of the lower frame 10B, a protruding (ridge-shaped) guide convex portion 10L that is long in the vertical direction is provided. A large number of guide projections 10L are formed at regular intervals (for example, every several cm) over the entire inner periphery of the lower frame 10B.

  The guide projection 10L has an arcuate lower end surface. When the rice cooker 1 is placed on the induction heating cooker 2, the circular arc surface of the guide projection 10L smoothly guides the rice cooker 1 to the outer peripheral end of the upper lid 2B constituting the outer shell case 2A, It is formed for the purpose of fitting the lower frame 10B so as to wrap the outer shell case 2A from above.

  The partition wall 61 is formed vertically from the bottom of the lower case 2C made of a plastic material. On the right side of the partition wall 61, the cooling air from the cooling fan 60 flows as indicated by reference numeral CF (flows in a direction perpendicular to the plane of the paper of FIG. 18).

  As described in the second embodiment, typically, the reed switch 18 is formed by overlapping a part of two nickel alloy (magnetic material) leads and sealing the lead in an elongated cylindrical glass tube. . Therefore, the external shape of the reed switch 18 is an elongated cylindrical shape.

In the eighth embodiment, unlike the second embodiment, the installation direction of the reed switch 18 is changed so as to be longer in the left-right direction so as to follow the flow CF of the cooling air.
Since the partition wall 61 has a portion (front arc portion 61C) that is long in the left-right direction in the induction heating cooking section 2, the reed switch 18 can be placed and fixed directly above the front arc portion 61C.
By using the front arc portion 61C, a dedicated support structure for the reed switch 18 can be simplified.

In FIG. 18, the fixing plate 31 is a fixing frame for fixing the permanent magnet 19 to the upper surface of the lower frame 10B, and is a member corresponding to the fixing plate 31 of the second embodiment.
The dimension W4 indicates the shortest distance from the outer peripheral surface of the inner pot 13 to the fixing plate 31. In the eighth embodiment, the reed switch 18 is lengthened in the left-right direction in order to secure a long dimension W4. Thereby, the degree to which the permanent magnet 19 receives heat (conduction heat or radiation heat) from the outer peripheral surface of the inner pot 13 can be almost eliminated, and problems such as deterioration of the permanent magnet 19 due to heat do not occur.

  With this configuration, even if the bottom of the rice cooker 1 becomes hot due to the heat of the inner pot 13 heated by the induction heating coil 24 during the rice cooking operation, as shown in FIG. Thus, a gap GX (gap) is secured. Further, since the gap GX (void) is in a state of communicating with the outside of the rice cooker 100 through the wall opening 30 such as a notch or a through hole, an effect of releasing hot air can be expected.

For this reason, in rice cooker 100 of the eighth embodiment, the proximity of bottom frame 10B and top plate 20 constituting the top surface of induction heating cooking unit 2 is not affected, and the degree of adhesion is not affected. It is possible to suppress a rise in temperature at a remote outer peripheral side.
Accordingly, it is possible to take measures against heat of the outer shell case 2A, and it is also possible to expect a secondary effect that overheating of the second input operation unit 22 and the second display unit 28 disposed at the front of the upper lid 2B can be prevented.

Embodiment 9 FIG.
The main part of rice cooker 100 of Embodiment 9 is shown in FIG. FIG. 19 is an enlarged longitudinal sectional view showing a left side portion of induction heating cooking unit 2 and a left side portion of rice cooking unit 1 in rice cooker 100 according to Embodiment 9.
The description of the same components as those of the first to eighth embodiments may be omitted. Further, the same reference numerals are given to the same or corresponding parts as in the first to eighth embodiments.

  Rice cooker 100 according to Embodiment 9 is obtained by improving upper case 10C of rice cooker 1. Further, as in the second embodiment, the reed switch 18 is disposed on the left side of the induction heating cooking unit 2. Specifically, the longitudinal direction of the partition wall 61 matches the longitudinal direction of the reed switch 18, and the reed switch 18 is installed right above the partition wall 61.

  A partition wall 61 formed integrally with the bottom surface of the lower case 2C is provided on the bottom surface of the lower case 2C. As in the second embodiment, the partition wall 61 includes a front circular arc portion 61C, a right side portion 61R, and a left side portion 61L. The front arc portion 61C is on the front side of the lower case 2C and crosses the front side of the cooling fan 60. The right side portion 61R extends linearly to the rear of the lower case 2C continuously from the rear end face of the front arc portion 61C. The left side portion 61L extends linearly to the rear of the lower case 2C continuously from the rear end surface of the front arc portion 61C.

  On the right side of the partition wall 61, the cooling air from the cooling fan 60 flows as indicated by reference numeral CF (flows in a direction perpendicular to the paper surface of FIG. 19).

  As described in the second and eighth embodiments, the reed switch 18 is formed by partially overlapping two nickel alloy (magnetic) leads and enclosing the leads in a glass tube. The external shape of the reed switch 18 is an elongated cylindrical shape.

  In the ninth embodiment, the reed switch 18 is different from the second embodiment, and its installation direction is changed so as to be longer in the front-back direction so as to follow the flow of the cooling air CF.

Since the partition wall 61 has a portion (the left portion 61L) that is long in the left-right direction in the induction heating cooking section 2, the reed switch 18 is mounted and fixed directly above the left portion 61L.
Therefore, a dedicated support structure for the reed switch 18 can be simplified by using the left side portion 61L.

In FIG. 19, the fixing plate 31 is a fixing frame for fixing the permanent magnet 19 to the upper surface of the lower frame 10B, and is a member corresponding to the fixing plate 31 of the second embodiment.
The dimension W4 indicates the shortest distance from the outer peripheral surface of the inner pot 13 to the fixing plate 31. In the ninth embodiment, the reed switch 18 is elongated in the front-rear direction, so that the dimension W4 can be long. Therefore, the degree to which the permanent magnet 19 receives heat (conductive heat, radiant heat) from the outer peripheral surface of the inner pot 13 can be almost eliminated, so that problems such as deterioration of the permanent magnet 19 due to heat can be prevented.

  In the ninth embodiment, the reed switch 18 is arranged directly above the partition wall 61, but the infrared signal transmitting / receiving section 62 may be arranged directly above the partition wall 61 together with the reed switch 18. By using the partition wall 61 such as the left portion 61L or the right portion 61R, a dedicated support structure for the infrared signal transmitting / receiving section 62 can be simplified.

  In the second embodiment, the weight sensor 95 is provided on the induction heating cooking unit 2 side, but the weight sensor 95 may be provided on the rice cooking unit 1 side. Further, in both the state where the rice cooker 1 is placed on the induction heating cooker 2 and the state where only the rice cooker 1 is transported to another place and used, the rice taken out of the inner pot 13 is used. The weight may be measured many times, and the calories may be calculated each time. The calorie value of the calculation result may be displayed on the first display unit 42.

  The scene of displaying calories is during the period in which the lid 11 is opened in order to serve rice from the inner pot 13. Therefore, when the lid 11 is opened to a position where the lid 11 becomes vertical, in a mode in which the first display unit 42 is provided on the upper surface of the lid 11 (see FIG. 1), the user can use the first display unit 42 It is difficult to see the displayed contents.

In a scene where calories are displayed, a calorie display section may be provided on the front surface of the lid 11 so that the display of the calories can be easily recognized. The calorie display unit may be, for example, a light-emitting diode display unit that displays numbers or characters in seven segments.
Further, it is desirable that the scene in which the calories are displayed is during a period in which the lid 11 is opened. Therefore, an operation key 44 (not shown) for enabling the input function while the lid 11 is open may be provided to calculate the calorie value. For example, when an input signal of the operation key 44 is input to the control unit 40, the weight of the rice taken out (cooked) from the inner pot 13 is measured, and the calorie value according to the weight of the rice is calculated. May be configured.

  The caloric value is calculated based on the difference between the weight immediately before measuring the weight of the rice and the weight at the stage where the weight of the rice in the inner pot 13 is reduced by placing the rice on tableware or the like and reducing the weight of the rice. .

When the power supply unit 29 is provided as in the second embodiment, the calorie display of the rice taken out of the rice cooker 100 can be performed at an arbitrary timing even when the rice cooker 1 is separated from the induction heating cooking unit 2. is there.
That is, even if the rice cooker 1 alone is moved to another place, calorie data calculated before the movement can be displayed. Further, when the rice is further taken out and eaten at the destination, calorie calculation can be performed by the rice cooker 1 alone, and the calculation result can be displayed on the calorie display unit.

  The calorie calculation results are stored in a time series by a storage unit such as a semiconductor storage element attached to the control unit 23, and can be stored in the rice cooking unit 1 even after returning the rice cooking unit 1 to the induction heating cooking unit 2. Therefore, by operating the first input operation unit 15, it is possible to display the calorie amount per meal (when serving in one bowl or the like, one cup) is displayed on the first display unit 42. it can. In addition, when several meals are eaten in a bowl, the calorie value calculated by summing up the amount of eaten rice can be displayed for each person who has eaten. In other words, for each person who eats rice, before meals, the calorie value according to the amount of rice put on the bowl can be calculated and reported, and when several families eat rice, the total value of all family members can be calculated. It is also possible to confirm.

  One meal is determined, for example, from the first point in time when the rice cooker 1 is separated from the induction cooker 2, the second rice cooker 1 is placed on the induction cooker 2 again. The control unit 23 or the control unit 40 detects and performs up to the point of time via the reed switch 18.

For example, the control unit 23 or the control unit 40 may be configured to detect the first point in time when the reed switch 18 is turned ON once and the rice cooker 1 is placed and cooked. Further, the control unit 23 or the control unit 40 may be configured to detect the second time point when the reed switch 18 is turned off once, the rice cooking unit 1 is separated, and the reed switch 18 is turned on again. In addition, the control unit 23 or the control unit 40 may be configured to determine that one meal is taken from the first time point to the second time point.
As a specific example, the control unit 23 or the control unit 40 determines that the reed switch 18 is turned on at 12:00 and the rice cooker 1 is placed and cooked (12:01). It can be configured to detect as the first time point. In addition, the control unit 23 or the control unit 40 determines that the reed switch 18 is turned off at 13:03, the rice cooker 1 is separated and transported to a table or the like, and the reed switch 18 is turned on again (13:55). Minute) can be detected as the second time point. Further, the control unit 23 or the control unit 40 can be configured to determine that one meal is from 12:01 to 13:55.

  The data indicating the calorie calculation result is stored in at least one of the rice cooker 1 and the induction heating cooker 2 unless the user operates the first input operation unit 15 to input an erasure. You can do it. The data storage period may be a fixed period (for example, one week) or a period set by the user using the first input operation unit 15. Note that in the rice cooker 100, measuring the weight of rice, calculating calories, and displaying the calorie has already been proposed in Japanese Patent Documents (Japanese Patent Application Laid-Open No. 2006-81641 and Japanese Patent No. 5611464). .

  As described above, the present invention has been described based on the first to ninth embodiments, but the present invention is not limited to the configurations of the above-described embodiments. For example, the configuration of the illustrated rice cooker 100 is an example, and is not limited to the above-described content. The rice cooker 100 including other components can be similarly implemented. In short, the scope (technical scope) of the present invention includes various modifications, applications, and uses made by those skilled in the art as necessary.

  Moreover, the rice cooker 100 according to the present invention can be widely used not only in kitchens of ordinary houses but also in cooking facilities such as public facilities or stores.

G1 gap, G2 gap, GX gap, KU First intake path, SH1 first air path, SH2 second air path, 1 rice cooker, 2 induction heating cooker, 2A shell case, 2B top lid, 2BU hem Part, 2C lower case, 2D convex part, 2E step part, 2H opening, 4 intake hole, 5 exhaust hole, 6 protrusion, 7 protrusion, 10 main body, 10a lid open / close button, 10B
Lower frame, 10BT step, 10C upper case, 10L guide convex, 10P bottom wall, 11 lid, 11a steam port, 12 hinge mechanism, 13 inner pot, 14 handle, 15 first input operation section, 15A input Key, 16 holes, 17 containers, 18 reed switch, 18A mounting plate, 19 permanent magnet, 20 top plate, 21 step, 22 second input operation unit, 22A input button, 22P surface plate, 22S detection unit, 23 control Unit, 24 induction heating coil, 25 temperature sensor, 26 ferrite, 27 power supply board, 28 second display unit, 29 power supply unit, 30 wall opening, 31 fixing plate, 40 control unit, 41 infrared signal transmitting / receiving unit, 41A infrared Light emitting element, 41B Support substrate, 41C Communication control unit, 42 First display unit, 44 Operation keys, 50 Power transmission coil, 51 Power reception coil, 60 Cool Fan, 60C fan case, 60M fan motor, 61 partition wall, 61A notch, 61C front arc, 61L left, 61R right, 62 infrared signal transceiver, 62A infrared communication element, 62B support substrate, 62C communication Control unit, 62R
Infrared light receiving element, 62S infrared light emitting element, 63 support frame, 64 screws, 65 fixing plate, 66 bottom plate, 70 mounting seat, 71 screw, 72 magnetic shield plate, 73 convex portion, 74 support, 74A support, 74B support, 74C support, 74D support, 75 protrusion, 76 cushion material, 77 intake port, 78 support leg, 79 auxiliary intake port, 80 heating circuit board, 81 radiating fin, 82 support plate, 90 first window, 91 second window, 93 Shield plate, 95 Weight sensor, 96 Legs, 97 Electronic switch, 97A Press rod, 98 Circuit board, 99
Protective sheet, 100 rice cooker, 101 through-hole, 102 support frame, 103 protrusion (convex), 104 temperature detection circuit, 105 signal line, 106 control circuit board, 108 exhaust port, 110 sealing material, 111 support plate, 112 Support leg, 113 support leg, 114 support protrusion, 115 support protrusion, 116 recess, 117 support, 118 support leg, 119 support leg, 120 mounting plate, 122P surface plate, 123 through hole, 177 intake port.

For the second object, the rice cooker according to the present invention includes a top plate, an induction heating coil disposed below the top plate, and a second input operation means for inputting a heating condition of the induction heating coil. A rice cooker provided with a box-shaped induction heating cooker provided, an inner pot heated by the induction heating coil, and a first input operation unit for inputting rice cooking conditions, wherein the rice cooker comprises: The induction heating coil is heated by driving the induction heating coil in a state where the induction heating coil is placed on the top plate, and cools the induction heating coil inside the induction heating cooking unit. A cooling fan for supplying cooling air, an infrared signal transmitting / receiving unit for transmitting an infrared signal including control information for rice cooking between the induction heating cooking unit and the rice cooking unit, and the rice cooking unit of A power transmission coil for supplying power for the control unit, and the induction heating cooking unit is configured by vertically stacking a plastic upper lid and a plastic lower case having a size overlapping with the upper lid. An outer shell case is formed, and a partition wall extending in the direction of the upper lid and receiving the load of the upper lid is integrally formed on an upper surface of a bottom of the lower case, and the power transmission coil extends upward from a bottom of the lower case. It is supported by projecting support legs.
In addition, for the second object, the rice cooker according to the present invention includes a rice cooker that accommodates an object to be cooked therein, and an induction heating cooker that heats and cooks the rice cooker on the upper surface thereof, The induction heating cooking unit includes an induction heating coil that heats the rice cooking unit, a reed switch that detects that the rice cooking unit is placed on the induction heating cooking unit, and cooling that supplies cooling air to the induction heating coil. A fan, and an infrared signal transmitting and receiving unit that transmits an infrared signal between the induction heating cooking unit and the rice cooking unit, wherein the rice cooking unit forms an outer shell, and the upper case An annular lower frame formed of a heat-resistant material provided below the upper case adjacent to a lower end surface of the upper case. The induction heating cooking unit has a plastic upper lid and a size overlapping the upper lid. Plastic lower case with A partition wall extending upward is integrally formed on an upper surface of a bottom portion of the lower case, and the inner space of the induction heating cooking unit is partitioned by the partition wall, so that the induction heating coil is larger than the partition wall. A ventilation path through which the cooling air of the cooling fan flows, and the reed switch is disposed on a side opposite to the cooling fan with the partition wall interposed therebetween.

Claims (29)

A rice cooker for storing the food inside,
An induction heating cooking unit that heats and cooks the rice cooking unit on the upper surface,
The induction heating cooking unit has an induction heating coil for heating the rice cooking unit,
An infrared signal transmitting and receiving unit that transmits an infrared signal between the induction heating cooking unit and the rice cooking unit,
The rice cooker includes an upper case forming an outer shell, and an annular lower frame formed of a heat-resistant material, provided below the upper case adjacent to a lower end surface of the upper case,
In the lower frame, a bottom wall protruding from the lower surface constituting the bottom surface of the rice cooking unit toward the induction heating cooking unit is provided along an outer edge of the lower surface of the lower frame. rice cooker. A rice cooker for storing the food inside,
An induction heating cooking unit that heats and cooks the rice cooking unit on the upper surface,
The induction heating cooking unit has an induction heating coil for heating the rice cooking unit,
An infrared signal transmitting and receiving unit that transmits an infrared signal between the induction heating cooking unit and the rice cooking unit,
The rice cooker includes an upper case forming an outer shell, and an annular lower frame formed of a heat-resistant material provided below a lower end surface of the upper case,
The induction heating cooking unit includes an upper lid made of a heat-resistant material having a top plate on which the rice cooking unit is placed, and a lower case with a bottom whose upper surface opening is closed by the upper lid.
A rice cooker comprising: between the upper lid and the lower case, at least one of a support or a partition wall integrally formed with at least one of the upper lid and the lower case. A rice cooker for storing the food inside,
An induction heating cooking unit that heats and cooks the rice cooking unit on the upper surface,
Inside the induction heating cooking unit, an induction heating coil that heats the rice cooking unit, an infrared signal transmitting and receiving unit that transmits an infrared signal between the induction heating cooking unit and the rice cooking unit, and the induction heating coil A cooling fan for supplying cooling air,
The induction heating cooking unit includes a plastic upper lid, and a plastic lower case having a size overlapping with the upper lid,
A top plate on which the rice cooker is placed is fixed on the top lid,
A mounting seat for holding the induction heating coil is integrally formed on a lower surface of the upper lid,
On the bottom upper surface of the lower case, a partition wall extending upward beside the intake port of the cooling fan is integrally formed, and a heat insulating material is provided between an upper end of the partition wall and a lower surface of the upper lid. Cushion material is arranged,
The rice cooker, wherein the infrared signal transmitting / receiving unit is disposed on the opposite side of the partition wall from the cooling fan. A rice cooker for storing the food inside,
An induction heating cooking unit that heats and cooks the rice cooking unit on the upper surface,
Inside the induction heating cooking unit, an induction heating coil for heating the rice cooking unit, a reed switch for detecting that the rice cooking unit is mounted on the induction heating cooking unit, and a cooling air flowing through the induction heating coil. And a cooling fan for supplying
The induction heating cooking unit includes a plastic upper lid, and a plastic lower case having a size overlapping with the upper lid,
A top plate on which the rice cooker is placed is fixed on the top lid,
On the bottom upper surface of the lower case, a partition wall extending upward is integrally formed,
The rice cooker, wherein the reed switch is arranged on the opposite side of the partition wall from the cooling fan. A box-shaped induction heating cooking unit including a top plate, an induction heating coil disposed below the top plate, and second input operation means for inputting a heating condition of the induction heating coil;
An inner pot heated by the induction heating coil, and a rice cooker provided with a first input operation unit for inputting rice cooking conditions,
The rice cooking section is heated by driving the induction heating coil in a state where the rice cooking section is placed on the top plate of the induction heating cooking section,
Inside the induction heating cooking unit, a cooling fan for supplying cooling air for cooling the induction heating coil, and control information for rice cooking between the induction heating cooking unit and the rice cooking unit are included. An infrared signal transmitting and receiving unit for transmitting an infrared signal, and a power transmission coil for supplying power for the control unit of the rice cooking unit, respectively,
The induction heating cooking unit, an outer shell case is formed by vertically stacking a plastic upper lid and a plastic lower case having a size overlapping the upper lid,
On the bottom upper surface of the lower case, a partition wall extending in the direction of the upper lid and receiving the load of the upper lid is integrally formed,
The rice cooker is characterized in that the power transmission coil is supported by support legs projecting upward from the bottom of the lower case. At a position directly below the induction heating coil, a heating circuit board including an inverter circuit is arranged,
The rice cooker according to claim 3, wherein cooling air is supplied from the cooling fan to the induction heating coil and the heating circuit board simultaneously and in parallel. At a position directly below the induction heating coil, a heating circuit board including an inverter circuit is arranged,
The rice cooker according to claim 2 or 5, further comprising a cooling fan that supplies cooling air to the induction heating coil and the heating circuit board simultaneously and in parallel. Forming an intake port of the cooling fan on a lower surface of the lower case,
The rice cooker according to claim 6, wherein the heating circuit board is arranged so as to be hidden behind a line of sight when viewed from outside an intake port of the cooling fan. The infrared signal transmitting and receiving unit has an infrared light emitting element,
The rice cooker according to any one of claims 2, 3, and 5, wherein the infrared light emitting element is supported by the partition wall.   A member constituting an outer shell of the induction heating cooking unit is configured by a plastic upper lid and a plastic bottomed box-shaped lower case having a size overlapping with the upper lid. The rice cooker according to claim 1, wherein A member constituting an outer shell of the induction heating cooking unit is constituted by a plastic upper lid and a plastic bottomed box-shaped lower case having a size overlapping with the upper lid,
The rice cooker according to claim 1, wherein a mounting seat for supporting a support frame made of heat-resistant plastic for supporting the induction heating coil is integrally formed on a lower surface of the upper lid. The infrared signal transmitting and receiving unit has an infrared light emitting element,
A window for transmitting an infrared signal of the infrared light emitting element is formed in a part of the upper lid where the induction heating cooking unit and the rice cooking unit overlap and are close to or in contact with each other. Item 9. The rice cooker according to any one of items 2, 3, 5, and 10. The induction heating cooking unit includes a plastic upper lid, and a plastic lower case having a size overlapping with the upper lid,
In the inside of the induction heating cooking unit, a column extending upward from the upper surface of the lower case is formed at at least two places around the induction heating coil, avoiding a heating area by the induction heating coil. The rice cooker according to claim 1, wherein the rice cooker is provided.   In the inside of the induction heating cooking unit, a column extending upward from the upper surface of the lower case is formed at at least two places around the induction heating coil, avoiding a heating area by the induction heating coil. The rice cooker according to claim 2, wherein the rice cooker is provided.   The rice cooker according to claim 4, wherein a cushion member made of a heat insulating material is disposed between an upper end of the partition wall and a lower surface of the upper lid.   The rice cooker according to any one of claims 2 to 4, wherein the top plate is fixed on the upper lid in an overlapping manner. Further comprising a reed switch for detecting that the rice cooker is placed on the induction heating cooker,
The rice cooker according to claim 2, wherein the reed switch is supported by the partition wall. Further comprising a reed switch for detecting that the rice cooker is placed on the induction heating cooker,
The rice cooker according to claim 2, wherein the reed switch is disposed right above the partition wall. Further comprising an infrared signal transmitting and receiving unit that transmits an infrared signal between the induction heating cooking unit and the rice cooking unit,
The rice cooker according to claim 4, wherein the infrared signal transmitting / receiving unit and the reed switch are provided in the induction heating cooking unit so as to avoid a heating area by the induction heating coil. Further comprising an infrared signal transmitting and receiving unit that transmits an infrared signal between the induction heating cooking unit and the rice cooking unit,
The infrared signal transmitting and receiving unit and the reed switch are provided in the induction heating cooking unit, avoiding a heating area by the induction heating coil,
The rice cooker according to claim 4, wherein the infrared signal transmitting / receiving unit and the reed switch are arranged right above the partition wall.   3. The rice cooker according to claim 2, wherein the pillar is formed vertically and integrally from a bottom surface of the lower case toward the upper lid. 4. The column is integrally formed vertically from the bottom surface of the lower case toward the upper lid,
3. The rice cooker according to claim 2, wherein the support posts are formed in at least two places around the induction heating coil, avoiding a heating region by the induction heating coil. 4.   The support is vertically integrally formed from a bottom surface of the lower case toward a direction of the upper lid to a horizontal position coinciding with an upper surface of the lower case, and is in contact with the upper lid at the horizontal position. The rice cooker according to claim 2.   24. The rice cooker according to claim 23, wherein an inclusion made of a cushion material or a material having a high heat insulating property is interposed between the support and the upper lid.   The rice cooker or the induction heating cooker has a weight sensor that measures the weight of the rice cooked in the rice cooker, a control unit that calculates a calorie value according to the measurement result of the weight sensor, and the calorie value. The rice cooker according to any one of claims 1 to 5, further comprising a display unit for displaying.   The rice cooker according to any one of claims 1 to 5, wherein the rice cooker has a power supply unit that receives power from the induction heating cooking unit by non-contact power supply. The rice cooking unit has a first display unit that displays information about rice cooking, and a power supply unit that receives power from the induction heating cooking unit by non-contact power supply,
The induction heating cooking unit includes a second display unit that displays information about induction heating cooking, and a power transmission coil for supplying power to the power supply unit.
The said 1st display part operates with the electric power from the said electric power feeding part in the state in which the said rice cooking part is not mounted on the said induction heating cooking part, The Claim 1 characterized by the above-mentioned. The rice cooker according to the above. A member constituting an outer shell of the induction heating cooking unit is constituted by a plastic upper lid and a plastic bottomed box-shaped lower case having a size overlapping with the upper lid,
At a position directly below the induction heating coil, a heating circuit board including an inverter circuit is arranged,
The induction heating coil and the heating circuit board, further comprising a cooling fan that supplies cooling air simultaneously and in parallel,
Forming an intake port of the cooling fan on a lower surface of the lower case,
2. The rice cooker according to claim 1, wherein the heating circuit board is arranged so as to be hidden behind a line of sight when viewed from outside an intake port of the cooling fan. 3. The rice cooking unit has a first display unit that displays information about rice cooking, and a power supply unit that receives power from the induction heating cooking unit by non-contact power supply,
The induction heating cooking unit includes a second display unit that displays information about induction heating cooking,
The power transmission coil supplies power to the power supply unit,
The rice cooker according to claim 5, wherein the first display unit operates with power from the power supply unit when the rice cooker is not placed on the induction heating cooker.

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