JPH0752661Y2 - Rice cooker - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called indirect cook rice cooker having a vacuum double structure body.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Patent Publication No. 62-44482, a stainless steel vacuum double structure body is used.
A rice cooker including an inner pan to be housed in the container, a rice cooker disposed between an inner bottom surface of the container and an outer bottom surface of the inner pan, and a radiant heat to heat the inner pan and a heat retaining heater. Is proposed. This rice cooker has a high vacuum insulation structure because its body has a vacuum double structure, and since it heats the inner pot indirectly through the air layer by the radiant heat of the rice cooker, it cooks rice evenly Is possible.

[0003]

[Problems to be Solved by the Invention] However, in such a rice cooker, the inner pot is heated through the air layer by the radiant heat of the rice cooker.
It must be in a high temperature state exceeding ℃. For this reason,
There is a possibility that the temperature of the inner wall of the body becomes high and the stainless steel forming the inner wall becomes sensitized to cause rust. Also,
In this way, when the temperature of the inner wall of the vessel is high, the vacuum heat insulating effect cannot be expected so much, and the temperature of the outer wall becomes high.Therefore, it is necessary to further provide a heat insulating material on the outer side of the inner wall, and there is a problem that the main body becomes large. It was An object of the present invention is to solve the above problems, and it is an object of the present invention to provide a rice cooker that has good heat insulation and can be held down at a low outer wall temperature of a vacuum double structure container.

[0004]

In order to achieve the above object, the present invention provides a vacuum double structure container, an inner pot to be housed in the container, a lid for covering the inner pot, and In a rice cooker that is provided between the inner bottom surface of the body and the outer bottom surface of the inner pot, and a rice cooker that heats the inner pot by its radiant heat, between the inner surface of the inner pot and the outer surface of the inner pot A separate reflector is provided between the bottom surface and the rice cooking heater, and a heat retaining heater is provided at the upper end of the lid or the container.

[0005]

According to the above construction, the amount of radiant heat transfer from the rice cooking heater to the bowl is reduced by the reflector plate interposed between them, and further, from the space between the reflector plate and the inner wall of the bowl to the outside of the bowl. Insulated by the vacuum double structure of the body. Further, the upper part of the inner pot is insulated by a heat insulation heater provided at the upper end of the lid or the body.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a rice cooker according to the present invention, which is roughly composed of a body 1, an inner pot 2, a lid 3, a rice cooker 4, and a reflector 5. The body 1 is a bottomed container having a vacuum double structure made of stainless steel or aluminum-plated steel. In the vacuum space between the inner wall and the outer wall of the container 1, a getter 6 that absorbs stored gas released from the inner and outer walls during vacuum sealing, and radiative heat transfer from the inner wall to the outer wall are reduced. A copper foil 7 having the same gas absorbing action as is stored.

A shoulder body 8 is fitted on the upper end of the body 1, and a bottom body 9 is fitted on the lower end. Further, at the center of the bottom of the body 1, there is formed an opening 10 through which lead wires from the rice cooking heater 4 and the temperature sensor 13 described later are led out into the bottom 9.
A support fitting 11 is fixed to the edge of the opening 10, and a temperature sensor 13 having a thermistor 12 built in the support fitting 11.
Is attached. The temperature sensor 13 is biased upward by a spring means (not shown) so as to come into pressure contact with the outer surface of the bottom of the inner pot 2. The inner pot 2 is housed in the container 1 so that it can be taken out, and the upper edge 2a is a packing 14
By being mounted on the upper end edge of the container body 1 via the above, a space is formed between the outer side surface and the outer bottom surface of the container body 1 and the inner side surface and the inner bottom surface of the body body 1.

The lid body 3 is attached to the shoulder body 8 of the body 1 so as to be openable and closable by a hinge (not shown). A heat insulation heater 16 is provided on the inner surface of the heat dissipation plate 15 attached to the inside of the lid 3. Further, an inner lid 17 is detachably attached to the heat dissipation plate 15 so as to come into pressure contact with the edge portion 2a of the inner pot 2. The rice cooking heater 4 is supported by a plurality of support bases 18 fixed to the inner bottom wall of the body 1 via supporting metal fittings 19, and is arranged in a double annular shape in the space between the body 1 and the inner pot 2. ing. And both ends of this rice cooking heater 4 are
It is led out from the opening 10 of the body 1 and is connected to a power supply device (not shown) in the bottom body 9.

The reflecting plate 5 is made of aluminum or an aluminum-plated steel plate and has a cylindrical shape with a bottom. The reflecting plate 5 is mounted on the support base 18 of the body 1 in a state where two sheets are stacked, and the side wall of the reflection plate 5 is inside the body 1. It is located in the space between the side surface and the outer surface of the inner pot 2, and its bottom wall is located in the space between the inner bottom surface of the vessel 1 and the heater 4. The rice cooking heater 4 and the warming heater 16 are controlled to be turned on and off by a controller (not shown) based on the temperature of the inner pot 2 detected by the thermistor 12.

In the rice cooker having the above structure, when a rice cook switch (not shown) is pressed, the rice cooker 4 is turned on to generate heat. As a result, the radiant heat of the rice cooking heater 4 heats the bottom wall and the side wall of the inner pan 2 through the air layer in the space between the body 1 and the inner pan 2, and uniform rice cooking is performed. The amount of radiant heat transfer from the rice cooking heater 4 to the body 1 side is reduced by the reflector 5 and further insulated by the vacuum double structure body 1. Therefore, the space around the rice cooking heater 4 is 4
Even if the temperature exceeds 50 ° C, the inner wall of the body 1 will be 450
Since the temperature becomes lower than the sensitization temperature of stainless steel at a temperature of ℃ or less, the material of the body 1 does not rust or deteriorate. Moreover, since the inner wall of the body 1 is insulated from the outer wall by the vacuum double structure, the outer wall of the body 1 is kept low to room temperature so that it is not hot to the touch, and it can be used as an exterior body as it is. Become.

When the rice cooking is completed, the rice cooking heater 4 is turned off and the heat retaining heater 16 is turned on to prevent heat from flowing out from the inner pot 2 upward. Further, even if the rice cooking heater 4 is turned off, heat is prevented from flowing out from the inner pot 2 to the side and the lower side by the heat insulating action of the reflector 5 and the vacuum double structure body 1 as described above. . If the lid 3 is opened for a long time during this heat retention and the temperature of the rice in the inner pot 2 drops, the thermistor 1
2 detects this temperature, the rice cooking heater 4 is turned on and reheated to the heat retention temperature, so that the rice is restored to the original heat retention state, and thereafter the heat retention heater 16 maintains this heat retention state.

In this way, the heat retaining heater 1 provided on the lid body 3
Although the rice is kept warm by 6 and the inner lid 17 is heated along with it, the water vapor in the inner pot 2 does not condense on the inner lid 17. For this reason, unlike the conventional method, the condensed soup does not fall on rice and its taste is not deteriorated or putrefaction, and it can be kept warm deliciously forever.

In the above embodiment, the heat retaining heater 16 is attached to the lid 3.
The heat-dissipating plate 15 is provided on the heat-dissipating plate 15. However, as shown in FIG. 2, a heat-retaining heater 16 is provided around the upper end of the body 1 and is covered with a heat-retaining heater cover 20 made of aluminum. The edge 2a of the inner pot 2 may be in contact with. With this structure, the heat of the heat insulation heater 16 passes through the heat insulation heater cover 20 and the edge portion 2a of the inner pot 2 and the inner lid 17
As a result, the inner lid 17 is heated as in the above-described embodiment, and the heat retention and the condensation prevention function are achieved. Further, in this structure, heat is prevented from flowing out between the upper end of the container 1 and the edge portion 2a of the inner pot 2, so that the heat insulating property is further improved.

[0014]

As is apparent from the above description, according to the present invention, the amount of radiant heat transfer from the rice cooker heater to the inner wall of the vessel through the reflector is reduced by the reflector, and the vacuum double structure is further provided. Since the lateral and downward heat flow is prevented by the body, uniform rice cooking is performed, the temperature of the outer wall of the body is kept low, and the body can be used as it is as an exterior body. In addition, at the time of heat retention, in addition to the heat insulating function between the reflector and the body, the heat insulation heater of the lid prevents the heat from flowing upwards, so that the heat insulation is good and the water vapor inside the lid condenses on the lid. The rice is kept warm and delicious.

[Brief description of drawings]

FIG. 1 is a half sectional view of a rice cooker according to the present invention.

FIG. 2 is a partially enlarged cross-sectional view of a rice cooker according to another embodiment of the present invention.

[Explanation of symbols]

1 ... bowl, 2 ... inner pot, 3 ... lid, 4
… Rice cooker, 5… Reflector, 16… Insulation heater.

Claims (1)

[Scope of utility model registration request] 1. A vacuum double structure container, an inner pot housed in the container, a lid for covering the inner pot, and an inner bottom surface of the container and an outer bottom surface of the inner pan. In a rice cooker provided with a rice cooking heater that heats an inner pot by its radiant heat, a separate reflector is provided between the inner surface of the inner pot and the outer surface of the inner pot and between the bottom of the inner pot and the rice cooker. At the same time, a rice cooker is characterized in that a warming heater is provided on the upper end of the lid or the body.