JPH0531719U - rice cooker - Google Patents

Abstract

(57) [Abstract] [Purpose] The rice cooker of the present invention prevents the space between the outer pot and the inner pot from being heated when rice is cooked, and does not reduce the effect of vacuum insulation of the outer pot. The purpose is to obtain the heat insulation effect of. [Structure] An opening of a container-shaped outer pot 1 having an upper surface on which a vacuum heat insulating layer 5 is formed by an outer wall 1b and an inner wall 1a is opened and closed by an outer lid 2 pivotally supported by the outer pot 1. An inner pot 4 for storing cooked rice is detachably housed in the outer pot 1, a heating coil 6 for dielectrically heating the inner pot 4 is provided on the inner bottom portion of the outer pot 1, and a non-magnetic material is formed on the upper part of the heating coil 6. The coil cover 8 is installed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is to open and close the opening of a container-shaped outer pot whose upper surface is opened by forming the vacuum heat insulation layer by the outer wall and the inner wall with the outer lid pivotally supported on the outer pot and The present invention relates to a rice cooker in which an inner pot for storing cooked rice is detachably stored.

[0002]

[Prior Art]

 The conventional rice cooker is composed of an outer pot 21, an outer lid 22, an inner lid 23, an inner pot 24, etc., as disclosed in Japanese Utility Model Publication No. 2-2249.

In the outer pot 21, an inner wall body 21a and an outer wall body 21b made of metal such as stainless steel are adhered to each other by welding or the like to form a vacuum heat insulating layer 25 between the outer wall body 21a and the inner wall body 21b. It was A hot plate 27 having a rice cooking heater 26 embedded therein was attached to the inner bottom of the outer pot 21 with a plurality of attachment angles 28, and a heat retaining heater 29 was attached below the heat plate 27 with an attachment angle 30. Further, a heat sensitive body 31 having a heat sensitive element such as a thermistor built therein is provided on the inner bottom portion of the outer pot 21 so as to be in close contact with the inner pot 24 with a spring 32.

Similar to the outer pot 21, the outer lid 22 is formed by adhering an inner wall plate 22a and an outer wall plate 22b made of metal such as stainless steel to each other by welding or the like, and between the inner wall plate 22a and the outer wall plate 22b. The vacuum heat insulating layer 33 was formed, and the handle 34 was provided on the upper surface thereof. The outer lid 22 having such a structure is rotatably supported by a hinge 35 fixed to the upper end of the side surface of the outer pot 21 with a shaft 36, and the rotation of the outer lid 22 opens and closes the opening of the outer pot 21. The closed state is maintained by the engagement of the latch lever 37 and the latch hook 38, and is released by releasing the engagement of the latch lever 37 and the latch hook 38 by operating the latch button 39.

Further, a packing 40 having elasticity such as silicon rubber is provided on the outer peripheral portion on the inner surface side of the outer pan 22 over the entire circumference, and the packing 40 seals the space between the outer pan 21 and the upper end portion. The inner pot 23 is detachably fitted and supported by a suspension rod 41 with a packing 42 having elasticity such as silicon rubber, and when the outer lid 22 is closed, the opening of the inner pot 24 is closed.

[0006]

[Problems to be solved by the device]

 In the case of the rice cooker with the above configuration, a rice cooking heater is placed on the inner bottom of an outer pan with a vacuum heat insulation layer, and the heat of the rice cooking heater heats the hot plate and the heat is transmitted to the inner pan. I was cooking rice.

Therefore, the space between the inner pot and the outer pot is heated, and this heat heats the outer pot to a high temperature, and this heat is transmitted as radiant heat through the vacuum heat insulating layer and reduces the heat insulating effect. Even if the outer pot is vacuum-insulated, there is a problem that it is not possible to obtain the desired heat insulation effect.

The rice cooker of the present invention has been made in view of the above problems, and prevents the space between the outer pot and the inner pot from being heated during rice cooking, and the effect of vacuum insulation of the outer pot is improved. The purpose is to obtain a predetermined heat insulation effect without lowering.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, the rice cooker of the present invention has an outer lid axially supported on the outer pan by opening an opening of a container-shaped outer pan having an open upper surface on which a vacuum heat insulation layer is formed by an outer wall and an inner wall. The inner pan for storing cooked rice is detachably housed in the outer pan, and a heating coil for dielectrically heating the inner pan is provided on the inner bottom of the outer pan, and a non-heater is placed above the heating coil. A coil cover made of magnetic material is installed.

[0010]

[Action]

 The rice cooker with the above configuration cooks rice by inductively heating the inner pot flake facing the heating coil when cooking rice, and does not heat the space between the outer pot and the inner pot by the vacuum insulation layer of the outer pot. Fully exerts a predetermined heat insulating effect.

[0011]

【Example】

 An embodiment of the rice cooker of the present invention will be described with reference to FIGS. The rice cooker of the present invention was composed of an outer pot 1, an outer lid 2, an inner lid 3 and an inner pot 4.

In the outer pot 1, an inner wall body 1a and an outer wall body 1b made of a stainless steel plate are welded to each other and bonded by caulking or the like to form a vacuum heat insulating layer 5 between the inner body 1a and the outer body 1b. A coil base 7 for fixing the heating coil 6 for cooking rice is provided on the inner bottom of the outer pot 1, the heating coil 6 is arranged on the coil base 7, and a non-magnetic material is provided on the upper part of the heating coil 6. A coil cover 8 formed of a body is installed to fix the heating coil 6.

On the upper surface of the coil cover 8, there is provided a thermo-assembly 9 which comes into contact with the inner pot 4 to detect the temperature of the cooked food. A step portion 10 is provided on the upper side surface of the inner body 1a of the outer pot 1, and a shoulder heater 11 is attached to the step portion 10 via a shoulder heater base 12.

The inner pot 4 is formed of a stainless steel plate that is dielectrically heated, the inner side is formed of an aluminum clad material having thermal conductivity, and the inner surface thereof is processed with a fluorine resin. The collar portion 13 provided on the upper portion of the inner pot 4 is placed on the shoulder heater 11, and the inner pot 4 and the outer pot 4 are formed so that a space is hardly formed between the inner pot 4 and the outer pot 1. 1 and 1.

The outer lid 2 is rotatably supported by a hinge 14 fixed to the upper end of the side surface of the outer pot 1 with a shaft 15, and the rotation of the outer lid 2 opens and closes the opening of the outer pot 1. The state is held by the engagement of the latch lever (not shown) and the latch hook (not shown), and is released by releasing the engagement of the latch lever and the latch hook by operating the latch button (not shown). Was there.

Further, an elastic packing 16 such as silicone rubber is provided on the outer peripheral portion of the inner surface of the outer lid 2 over the entire circumference, and the packing 16 is brought into contact with the flange portion 13 of the inner pan 4 so that the inner pan 4 is Seal between and. The outer lid 2 is provided with a steam vent hole 17 and a steam valve 18. Further, an operation board 19 is provided on the upper portion of the vacuum heat insulating layer 5 of the outer pot 1, and a control board 20 is provided on the lower portion thereof.

When the rice cooker having the above-mentioned configuration is used for cooking rice, the heating coil 6 causes the bottom portion of the inner pot 4 to be dielectrically heated, and the shoulder heater 11 additionally heats the upper portion of the inner pot 4 and the inner lid 3 to cook the rice. To do. At this time, since the inner pot 4 is directly heated by dielectric heating, the temperature rise in the space between the inner pot 4 and the outer pot 1 can be suppressed as much as possible.

Since the outer lid 2 is not provided with an electrical component, the outer lid 2 can be detached from the outer pot 1 and washed as a whole.

[0019]

[Effect of the device]

 Since the rice cooker of the present invention is configured as described above, it is possible to minimize the temperature rise in the side portion of the outer pot and the space between the outer pot and the inner pot.

Therefore, the heat loss due to the radiation of the vacuum heat insulating layer of the outer pot and the heat loss transmitted through the outer pot can be suppressed to a very small level, and the heat insulating effect of the vacuum heat insulating layer can be dramatically improved. Since the amount of heat for cooking cooked rice is small, it is possible to cook rice with a low-power heating element.

Further, since the heat retention can be performed by the heating element of low electric power, it is possible to prevent the rice cooked during the heat retention from being dried and being deteriorated by heat.

[Brief description of drawings]

FIG. 1 is an overall schematic sectional view showing an embodiment of a rice cooker of the present invention.

FIG. 2 is an enlarged sectional view showing the lower part of the rice cooker of the present invention.

FIG. 3 is an enlarged sectional view showing the upper part of the rice cooker of the present invention.

FIG. 4 is a cross-sectional view showing an example of a conventional rice cooker.

[Explanation of symbols]

 1 Outer Pan 1a Inner Wall 1b Outer Wall 2 Outer Lid 3 Inner Lid 4 Inner Pan 5 Vacuum Insulation Layer 6 Heating Coil 8 Coil Cover

Claims (1)

[Scope of utility model registration request] 1. An outer lid axially supported on the outer pot opens and closes an opening of a container-shaped outer pot having an upper surface opened by a vacuum heat insulation layer formed by the outer wall body and the inner wall body. A detachable inner pan for storing cooked rice, wherein a heating coil for dielectrically heating the inner pan is provided on the inner bottom of the outer pan, and a coil cover made of a non-magnetic material is provided on the heating coil. Rice cooker characterized by having installed.