JP2018086301A - rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker capable of preventing starchy liquid from boiling over during rice cooking operation.SOLUTION: A rice cooker includes: an inner pot 5, a rice cooker body 1 having an inner pot housing part 1a housing the inner pot; and a lid body 2 including an outer lid 2a covering the upper part of the rice cooker body and an inner lid 2b mounted at the lower surface side of the outer lid. The inner pot includes a bottom part 5a and a cylinder part 5c extending at the upper part of the bottom part to an opening end part 5d of the inner pot. The cylinder part includes a lower cylinder part 5c2 housed in the inner pot housing part and an upper cylinder part 5c1 protruding upward from the inner pot housing part and extending to the opening end part. The outer lid includes upper cylinder part heating means 30 which heats the upper cylinder part. The upper cylinder part heating means comprises a radiation plate facing the upper cylinder part and a heater mounted in the radiation plate. A heat radiation space 13 sandwiched between the radiation plate and the upper cylinder part is preferably communicable with the outer space.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a rice cooker that cooks cooked rice.

  Conventionally, in order to prevent boiled soup (so-called rice balls) from which the components of the rice have melted out from the inside of the inner pot when the water containing rice boiled during the rice cooking operation, There is a rice cooker having a cartridge that accepts rice balls and steam from the inner pot, separates the rice balls and steam, releases the steam to the outside, and returns only the rice balls to the inside of the inner pot (for example, see Patent Document 1). ).

JP 2001-309851 A

  However, with the conventional configuration, as the heating output of rice cookers in recent years increases, there is a problem that the size of the cartridge increases in order to prevent a larger amount of rice balls from being blown out.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rice cooker capable of suppressing the spilling of rice balls during the rice cooking operation.

In order to solve the above problems, in a rice cooker, an inner pot, a rice cooker body having an inner pot accommodating portion for accommodating the inner pot, an outer lid covering the upper portion of the rice cooker body, and a lower surface side of the outer lid The inner hook has a bottom portion and a bottom portion, and a cylindrical portion extending above the bottom portion to the opening end of the inner hook, and the cylindrical portion is accommodated in the inner hook accommodating portion. A lower cylinder part and an upper cylinder part projecting upward from the inner hook housing part and extending to the opening end part, and the outer cover includes an upper cylinder part heating means for heating the upper cylinder part, and the upper cylinder part The heating means includes a heat radiating plate facing the upper tube portion and a heater attached to the heat radiating plate, and the space between the heat radiating plate and the upper tube portion only needs to communicate with the external space.
Moreover, in order to solve said subject, in a rice cooker, the inner pot, the rice cooker main body which has an inner pot accommodating part which accommodates this inner pot, and the outer cover and outer cover which cover the upper part of a rice cooker main body A lid body having an inner lid mounted on the lower surface side, the inner hook has a bottom portion and a cylindrical portion extending to the opening end portion of the inner hook above the bottom portion; A lower cylinder part to be accommodated, and an upper cylinder part that protrudes upward from the inner hook accommodating part and extends to the opening end, and the outer lid includes an upper cylinder part heating means for heating the upper cylinder part, The cylinder part heating means is composed of a heat radiating plate facing the upper cylinder part and a heater attached to the heat radiating plate. The outer lid is formed with a concave portion opening toward the inside, and the heat radiating plate closes the opening of the concave portion. Provided inside the recess, the heater is located in a space surrounded by the heat sink and the inside of the recess, and is an outside that supports the bottom of the heat sink Sites, outer lid protrusion may be formed to protrude inward.

  ADVANTAGE OF THE INVENTION According to this invention, the rice cooker which can suppress the spill of the rice ball during rice cooking operation | movement can be comprised.

The perspective view of the rice cooker 100 which concerns on embodiment XX sectional view in FIG. Enlarged view of portion Y in FIG. Perspective view of inner pot 5

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof is omitted or simplified as appropriate. In addition, the shape, size, arrangement, and the like of the configuration described in each drawing can be changed as appropriate within the scope of the present invention.

Embodiment.
[rice cooker]
FIG. 1 is a perspective view of a rice cooker according to an embodiment of the present invention as viewed from obliquely above. FIG. 2 is a sectional view taken along line XX in FIG. FIG. 3 is an enlarged view of a portion Y in FIG. FIG. 4 is a perspective view of the inner hook as viewed obliquely from above.

As shown in FIG.1 and FIG.2, the rice cooker 100 which concerns on this embodiment has the rice cooker main body 1 which has the inner pot accommodating part 1a, and the inner pot 5 detachably installed in the inner pot accommodating part 1a. And a lid 2 that covers the upper portion of the rice cooker body 1.
The lid 2 is attached to the rice cooker body 1 so as to be freely opened and closed. The user can open the lid body 2 and, for example, install the inner hook 5 in the inner pot accommodating portion 1a or take out the inner pot 5 from the inner pot accommodating portion 1a. In addition, the user can, for example, close the lid 2 and cook an object to be cooked such as rice prepared in the inner pot 5.

[Inner pot]
As shown in FIG. 4, the inner hook 5 has a bottom portion 5a, a cylindrical portion 5c extending to the opening end portion 5d above the bottom portion 5a, and a corner portion 5b between the bottom portion 5a and the cylindrical portion 5c. It is a bottom cylindrical cooking container. The inner hook 5 is formed, for example, by cutting out a baked carbon material.
The inner hook 5 may be formed of, for example, a metal such as iron, aluminum, or copper, or an alloy containing these, and in that case, is formed through processes such as casting and cutting.

The cylinder part 5c of the inner hook 5 of this embodiment includes a lower cylinder part 5c1 connected to the corner part 5b, and an upper cylinder part 5c2 extending to the opening end part 5d above the lower cylinder part 5c1.
The lower cylinder portion 5c1 has an inner peripheral surface formed in a substantially linear shape along the vertical direction. The upper cylinder part 5c2 is a part above the collar part 50 mentioned later, and has an inner peripheral surface gradually narrowed in the radial direction from the lower part toward the upper opening end part 5d.

Further, the outer peripheral surfaces of the lower cylinder portion 5c1 and the upper cylinder portion 5c2 are formed in substantially the same shape as the respective inner peripheral surfaces. That is, the outer peripheral surface of the lower cylindrical portion 5c1 is formed in a substantially straight shape along the vertical direction, and the outer peripheral surface of the upper cylindrical portion 5c2 is radially directed from the lower side toward the upper opening end portion 5d. It is gradually narrowed and formed.
That is, the inner hook 5 has a substantially bowl-shaped outer shape whose upper end portion is formed smaller than the maximum diameter of the inner hook 5.

Further, a flange 50 is provided on the outer peripheral surface of the inner hook 5. The collar part 50 protrudes outward from the outer peripheral surface of the upper cylinder part 5c2. The cylinder part 5c (upper cylinder part 5c2) is located above the collar part 50, and the inner space of the inner hook 5 is formed above the collar part 50 inside the inner hook 5.
Further, the inner peripheral surface of the inner hook 5 is gradually narrowed in the radial direction from the lower side toward the upper opening end 5d. The height h1 from the lower part of the flange 50 to the opening end 5d is 15% or more of the height h from the inner bottom of the inner hook 5 to the opening end 5d.

[Rice cooker body]
As shown in FIG.1 and FIG.2, the rice cooker main body 1 has the inner pot accommodating part 1a with which the upper part was opened. The upper end of the inner hook accommodating portion 1 a constitutes a hook support portion 1 a 1 that supports the lower side of the hook portion 50 of the inner hook 5. A ring-shaped inner hook seal member 1a2 that is in contact with the lower side of the hook portion 50 of the inner hook 5 is disposed on the hook support portion 1a1.
The inner hook seal member 1a2 seals between the lower side of the flange portion 50 and the flange support portion 1a1, and is formed of an elastic material such as silicon resin, for example. When the inner pot 5 is installed in the rice cooker main body 1, the space between the outside of the inner pot 5 and the inner side of the inner pot accommodating portion 1 a is sealed below the flange portion 50 of the inner pot 5.

The rice cooker body 1 has a main heating means 7, a temperature sensor 8, and a control unit 10.
The temperature sensor 8 detects the temperature in the vicinity of the center of the bottom portion 5a of the inner hook 5, and is composed of, for example, a thermistor. The control unit 10 controls the rice cooker 100 such as the main heating unit 7, the main body display unit 4, which will be described later, and the upper cylinder part heating unit 30 based on an input by operating the operation unit 3 which will be described later or an input from the temperature sensor 8. It controls the operation of various components to be configured, and includes, for example, a CPU or a dedicated IC. In addition, the control part 10 is provided in the main body rear part in this Embodiment.

The main heating means 7 heats the inner pot 5 and operates based on an instruction from the control unit 10. The main heating means 7 includes, for example, a bottom heating means 7a, a corner heating means 7b, and a lower cylinder heating means 7c. The bottom heating means 7a heats the bottom 5a of the inner pot 5. The corner part heating means 7b heats the corner part 5b of the inner hook 5.
In the example of this embodiment, the bottom heating means 7a and the corner heating means 7b are constituted by induction coils. However, the bottom heating means 7a and the corner heating means 7b are constituted by heating wires or the like. May be. The lower cylinder part heating means 7c heats the lower cylinder part 5c1 of the inner hook 5, and is composed of, for example, a cord heater.

[Lid]
As shown in FIGS. 1-3, the cover body 2 has the outer cover 2a and the inner cover 2b. The outer lid 2a covers the top of the rice cooker body 1. The outer lid 2a is attached to the rice cooker main body 1 so as to be openable and closable behind the rice cooker main body 1 by a connecting mechanism 6 such as a hinge.

An operation unit 3 and a main body display unit 4 are provided on the upper surface of the outer lid 2a.
The operation unit 3 gives instructions to the rice cooker 100, and is configured by, for example, a touch sensor. The user can operate the operation unit 3 to give instructions for selecting a cooking menu, setting a cooking time, and the like.
The main body display unit 4 displays an operation state and the like of the rice cooker 100, and is composed of, for example, a liquid crystal panel. The operation unit 3 and the main body display unit 4 may be configured by a touch panel in which these are integrally formed.

  An inner lid 2b is detachably mounted on the lower surface side of the outer lid 2a. The inner lid 2b covers the opening of the inner hook 5, and a ring-shaped inner hook seal member 12 is disposed on the lower surface side of the inner lid 2b. When the lid 2 is closed, the inner hook seal member 12 comes into contact with the opening end 5d of the inner hook 5 and seals between the opening end 5d of the inner hook 5 and the inner lid 2b. . The inner hook seal member 12 is formed of an elastic material such as silicon resin, for example.

  In addition, a steam hole 2b1 is formed in the inner lid 2b. An opening / closing valve 11 is provided in the steam hole 2b1 of the inner lid 2b. The on-off valve 11 is moved up and down by the pressure inside the inner hook 5. A part of the steam generated during rice cooking or the like passes through the steam hole 2b1 and is guided to the cartridge 20 installed above the inner lid 2b.

  The cartridge 20 is detachably mounted on the outer lid 2a above the inner lid 2b. The cartridge 20 separates the steam containing the rice cake component at the time of rice cooking into the rice cake ingredient and the steam, guides the separated steam to the outside of the rice cooker 100, and returns the rice cake component to the inside of the inner pot 5 It is. In other words, the steam including the tow component that has passed through the steam hole 2b1 of the inner lid 2b flows into the cartridge 20 from the inflow portion 20a of the cartridge 20, and is separated into the towed component and the steam in the cartridge 20. Steam is discharged from the steam discharge unit 20b.

Here, the outer lid 2a is configured to have a concave shape in which the outer lid lower surface portion 2a1 constituting the lower surface is opened downward, so that the outer lid lower surface portion 2a1 is located above the lid lower end 2c serving as the lower end of the lid body 2. A space 2d surrounded by is formed.
Thus, the lid body 2 has a cup shape that opens downward, and the opening facing downward is formed in a circular shape.

Further, a concave portion 2a2 that opens toward the inside of the lid body 2 is formed on an inner peripheral surface that is a portion extending in the vertical direction of the outer lid lower surface portion 2a1. The concave portion 2a2 is formed over the entire inner peripheral surface of the outer lid lower surface portion 2a1.
The concave portion 2a2 is provided with an upper cylindrical portion heating means 30 for heating the upper cylindrical portion 5c2 of the inner hook 5. The upper cylinder part heating means 30 is comprised from the cylindrical heat sink 31 which opposes the upper cylinder part 5c2 inside and outside, and the heater 32 attached to the heat sink 31 along the circumferential direction.

A seal member 33 is provided between the upper and lower ends of the heat sink 31 and the inner wall surface (outer lid 2a) of the recess 2a2. The heat sink 31 and the seal member 33 close the opening of the recess 2a2. It is out. The heater 32 is provided in the heat sink 31 so that it may be located in the space enclosed between the heat sink 31 and the recessed part 2a2.
In addition, a portion of the outer lid 2 a that supports the lower side of the heat radiating plate 31 is formed with an outer lid protruding portion 2 a 3 that protrudes inward from the heat radiating plate 31. Thus, by providing the outer lid protrusion 2a3, it is possible to make it difficult for the user to directly touch the heat radiating plate 31.

[Installation of the inner pot on the rice cooker body]
The state which installed the inner pot 5 comprised as mentioned above in the rice cooker main body 1, and closed the cover body 2 is demonstrated.
As shown in FIGS. 2 and 3, when the inner pot 5 is installed in the rice cooker body 1, the lower portion of the hook portion 50 of the inner pot 5 comes into contact with the hook support portion 1a1 at the upper end of the inner pot receiving portion 1a. The inner hook 5 is supported by the hook support portion 1a1.

  In such a state, the lower cylinder part 5c1 located in the lower part of the collar part 50 is accommodated in the inner hook accommodating part 1a. The upper cylinder part 5c2 located above the lower part of the collar part 50 protrudes upward from the inner hook accommodating part 1a and enters the space part 2d of the outer lid 2a. The upper cylindrical portion 5c2 that has entered the space portion 2d is in a state of facing the heat radiating plate 31 inside and outside.

Moreover, the heat radiation space 13 which is a space sandwiched between the upper cylinder portion 5c2 and the heat radiating plate 31 facing each other is provided outside the rice cooker 100 with the gap between the lid 2 and the rice cooker body 1 as a ventilation portion 14. It is configured to communicate with the space.
In addition, the ventilation part 14 may have a configuration such as a hole formed in the rice cooker body 1 or the lid 2 for ventilating the heat radiation space 13 from the outside of the rice cooker 100.

As described above, the cooking pot (rice and water) is put in the inner pot 5 and the inner pot 5 is stored in the rice cooker body 1 to start the rice cooking operation. In addition, the reference line is provided in the inner pot 5 so that the maximum amount of the food can be accommodated in the lower cylinder part 5c1 below the bowl part 50.
In the boiling step in the cooking operation, the control unit 10 operates the main heating unit 7, stops the heater 32 of the upper tube unit heating unit 30 (does not operate), or operates the output weakly. The lower cylinder part 5c1 is heated to a state suitable for cooking, and the cooking operation is performed so that the temperature of the upper cylinder part 5c2 is lower than the temperature of the lower cylinder part 5c1.

When the boiling process is started, the lower cylinder part 5c1, the bottom part 5a, and the corner part 5b are heated by the operation of the main heating means 7, and the cooked product is boiled along with this, and the foam moves inside the inner pot into the upper cylinder part 5c2. It springs up.
Here, since the temperature of the upper cylinder part 5c2 is lower than the temperature of the lower cylinder part 5c1 and the part below the lower cylinder part 5c1, the bubbles that have risen are efficiently cooled on the inner surface of the upper cylinder part 5c2, and broken. The boiled soup constituting the foam is returned downward by its own weight to prevent the rice cake from blowing out from the inner pot 5. That is, it is possible to reduce the amount of intrusion from the inner hook 5 into the cartridge 20.

  In particular, the heat radiation space 13 sandwiched between the upper cylinder portion 5c2 and the heat radiating plate 31 facing each other communicates with the external space of the rice cooker 100 with the gap at the position where the lid 2 and the rice cooker body 1 are aligned as the ventilation portion 14. Since it is comprised in the state which carried out, since the upper cylinder part 5c2 can be kept lower than the temperature of the lower cylinder part 5c1, the bubble which blows off efficiently can be cooled.

  Moreover, in order to cool the upper cylinder part 5c2, since the thermal radiation space 13 pinched | interposed between the upper cylinder part 5c2 and the heat sink 31 which opposes is maintained at low temperature, dew condensation may arise in the heat sink 31 vicinity. Since the sealing member 33 is provided between the heat radiating plate 31 and the outer lid 2a, it is possible to prevent water due to condensation from entering the space in which the heater 32 is provided.

Next, when the boiling process is completed, the control unit 10 proceeds to a dry-up process, an unevenness process, and a heat retention process.
The dry-up process is a process that completely absorbs moisture to the center of the rice, completely gelatinizes it to the center of the rice, and completely evaporates any excess moisture in the kettle. In this process, the temperature in the kettle is increased to the peak temperature (the highest temperature in the dry-up process) to promote the gelatinization of rice.

The unevenness process is a process to evaporate the moisture on the surface of the rice, to make the moisture of the rice uniform, and to completely gelatinize the inside of the rice. The rice does not burn, and the pot temperature is 80 ° C or higher. This is a step of holding for a predetermined time.
A heat retention process is a process of keeping the temperature of the cooked rice in a warm state after the end of the rice cooking operation (after the end of the unevenness process).

  The control part 10 heats the upper cylinder part 5c2 by operating the heater 32 of the upper cylinder part heating means 30 in the dry-up process, the unevenness process, and the heat insulation process. Thereby, it is possible to prevent the water vapor evaporated from the rice in the dry-up process, the unevenness process, and the heat retaining process from being cooled and condensed by the upper cylinder portion 5c2.

As shown in FIG. 3, the rice cooker body 1 according to this embodiment has, on the side, a portion having a height substantially equal to the height of the upper end of the inner pot accommodating portion 1 a. Is installed in the inner pot accommodating portion 1a, the upper tube portion 5c2 including the flange portion 50 protrudes upward from the rice cooker body 1.
In addition, the rice cooker body 1 extends over the entire circumference in the circumferential direction so that the upper cylinder portion 5c2 protrudes from above the rice cooker body 1 over the entire circumference in the circumferential direction of the rice cooker body 1. You may form in the height substantially equal to the height of the upper end of the hook accommodating part 1a.

  In this embodiment, since at least a portion along the circumferential direction of the upper cylindrical portion 5c2 protrudes upward from the rice cooker main body 1, the user can easily take out the inner pot 5 by holding the bowl 50. Can be done. The outer lid 2a has an upper cylinder part cover part 2a1 that covers the outer side of the upper cylinder part 5c2 protruding from the rice cooker body 1.

As described above, in this embodiment, the cylindrical portion 5c of the inner hook 5 is a portion (below the upper cylindrical portion 5c2) that is lower than the lower cylindrical portion 5c1 serving as a receiving cylindrical portion that is accommodated in the inner hook accommodating portion 1a. Side) and an upper cylindrical portion 5c2 protruding upward from the inner hook accommodating portion 1a.
Therefore, there is no high temperature inner pot accommodating portion 1a outside the upper cylinder portion 5c2 protruding upward from the inner pot accommodating portion 1a, and the outer peripheral surface of the upper cylinder portion 5c2 is cooled below the lid 2. ing. Further, a heat radiating space 13 for radiating heat is formed outside the upper cylindrical portion 5c2 protruding upward from the inner hook accommodating portion 1a, and the outer peripheral surface of the upper cylindrical portion 5c2 is efficiently cooled by air. It is supposed to be.

That is, during the boiling process, the temperature of the upper cylinder part 5c2 becomes lower than the temperature of the lower cylinder part 5c1. Therefore, in this embodiment, since the foam and the steam that have risen during the cooking with the rice cooker 100 are cooled on the inner peripheral surface of the upper cylinder portion 5c2, the risk of spilling is suppressed. Preferably, the heat radiation space 13 is configured to be ventilated from the outside of the rice cooker 100 by the ventilation portion 14, and can efficiently dissipate heat in the upper cylinder portion 5c2.
In addition, in order to cool the outer peripheral surface of the upper cylinder part 5c2 and suppress spillage, the height of the upper cylinder part 5c2 is 15% or more of the height from the inner bottom part of the inner hook 5 to the opening end part 5d. It is desirable to do.

Further, in this embodiment, the inner peripheral surface of the upper cylindrical portion 5c2 is gradually narrowed in the radial direction while going from the lower side to the upper opening end portion 5d. Therefore, in this embodiment, steam generated during cooking or the like is brought into contact with the inner peripheral surface of the upper cylinder portion 5c2 to condense, and is dropped back into the inner pot 5 for example.
Furthermore, bubbles that have risen during the boiling process and have propagated along the inner peripheral surface of the inner pot 5 fall on the inner peripheral surface of the upper cylindrical portion 5c2 by its own weight. As a result, in this embodiment, the risk of spillage is suppressed.
Furthermore, in this embodiment, since bubbles and steam that have risen during cooking are suppressed from being discharged to the outside of the inner pot 5, cooking is performed by confining the taste of a cooked item such as rice. It can be performed.

Moreover, in this embodiment, the display part 54 which displays a water level is arrange | positioned by the inner peripheral surface side of the lower cylinder part 5c1 below the upper cylinder part 5c2, and a to-be-cooked object is the upper cylinder part 5c2. It is accommodated in the lower lower cylinder part 5c1.
And the main heating means 7 which heats the lower cylinder part 5c1 is arrange | positioned outside the lower cylinder part 5c1. For this reason, in this embodiment, the to-be-heated material prepared for the inner pot 5 can be efficiently heated.

Furthermore, in this embodiment, the lower part of the hook part 50 of the inner pot 5 is in contact with the hook support part 1a1 at the upper end of the inner pot accommodating part 1a over the entire circumference, so that heat during cooking is generated. , And is confined below the flange 50. Therefore, in this embodiment, the cooking object such as rice prepared in the inner pot 5 can be efficiently heated.
Furthermore, in this embodiment, since heat at the time of cooking is confined below the flange 50, the upper cylindrical portion 5c2 is efficiently cooled in the heat radiation space 13 above the flange 50. be able to.

Moreover, according to the inner hook 5 of this embodiment, since the possibility of spilling can be suppressed, the structure of the cartridge 20 can be simplified and downsized. In this embodiment, since the configuration of the cartridge 20 is simplified, the cleaning of the cartridge 20 is easy and the cartridge 20 is downsized, so that the rice cooker 100 can be downsized. Can do.
As described above, in this embodiment, it is possible to suppress spillage such as rice balls during cooking with a simple configuration. Note that the cartridge 20 can be omitted when the structure of the inner hook 5 sufficiently suppresses the risk of spillage.

  DESCRIPTION OF SYMBOLS 1 Rice cooker main body, 1a Inner pot accommodating part, 1a1 rice cake support part, 1a2 Inner pot seal member, 2 cover body, 2a outer cover, 2a1 upper cylinder part cover part, 2b inner cover, 2b1 steam hole, 3 operation part, 4 Main body display section, 5 inner pot, 5a bottom section, 5b corner section, 5c cylinder section, 5c1 upper cylinder section, 5c2 lower cylinder section, 5d open end section, 6 coupling mechanism, 7 heating means, 7a bottom heating means, 7b corner section Heating means, 7c Lower cylinder part heating means, 8 Temperature sensor, 10 Control part, 11 On-off valve, 12 Seal member, 13 Heat radiation space, 14 Ventilation part, 20 Cartridge, 20a Inflow part, 20b Vapor discharge part, 50 collar part, 54 display part, 30 upper cylinder part heating means, 100 rice cooker

Claims (5)

A rice cooker body having an inner pot, an inner pot accommodating portion for accommodating the inner pot, an outer lid covering the upper side of the rice cooker body, and a lid having an inner lid mounted on the lower surface side of the outer lid; And
The inner hook has a bottom portion and a cylindrical portion that extends to the opening end of the inner hook above the bottom portion, and the cylindrical portion is accommodated in the inner hook accommodating portion, and the inner pot accommodating The upper cylindrical portion that protrudes upward from the portion and extends to the opening end,
The outer lid includes an upper tube portion heating means for heating the upper tube portion,
The upper cylinder part heating means comprises a heat radiating plate facing the upper cylinder part and a heater attached to the heat radiating plate,
A space between the heat sink and the upper tube portion communicates with an external space. A rice cooker body having an inner pot, an inner pot accommodating portion for accommodating the inner pot, an outer lid covering the upper side of the rice cooker body, and a lid having an inner lid mounted on the lower surface side of the outer lid; And
The inner hook has a bottom portion and a cylindrical portion that extends to the opening end of the inner hook above the bottom portion, and the cylindrical portion is accommodated in the inner hook accommodating portion, and the inner pot accommodating The upper cylindrical portion that protrudes upward from the portion and extends to the opening end,
The outer lid includes an upper tube portion heating means for heating the upper tube portion,
The upper cylinder part heating means comprises a heat radiating plate facing the upper cylinder part and a heater attached to the heat radiating plate,
The outer lid is formed with a recess opening toward the inside, the heat sink is provided inside the recess so as to close the opening of the recess, and the heater is surrounded by the heat sink and the recess. Located in the space
An outer lid projecting portion that projects inward is formed at a portion of the outer lid that supports a lower portion of the heat radiating plate. The heat radiating plate has a cylindrical shape, the inner peripheral surface of the heat radiating plate is opposed to the upper tube portion, and the heater is provided on the outer peripheral surface of the heat radiating plate,
The rice cooker according to claim 1 or 2, wherein a seal member is provided between the heat radiating plate and the outer lid, and the seal member is disposed at an upper end or a lower end of the heat radiating plate. . The rice cooker body has a heating means for heating a portion below the lower cylinder portion of the inner pot, and a control unit for operating the heating means and the upper cylinder portion heating means,
The control unit operates the heating unit and stops the upper tube unit heating unit or operates the output weakly so that the temperature of the upper tube unit is lower than the temperature of the lower tube unit. It performs, The rice cooker as described in any one of Claims 1-3 characterized by the above-mentioned. The rice cooker body has a heating means for heating a portion below the lower cylinder portion of the inner pot, and a control unit for operating the heating means and the upper cylinder portion heating means,
The control unit operates the upper cylinder part heating unit, and stops the heating unit or operates the output weakly so that the temperature of the upper cylinder part is higher than the temperature of the lower cylinder part. It performs, The rice cooker as described in any one of Claims 1-3 characterized by the above-mentioned.