JPH0530665Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is placed in the oven of a microwave oven,
The present invention relates to the structure of a microwave rice cooker for cooking rice.

<Prior art> Conventionally, proposals to generate heat in a container placed inside a microwave oven using a microwave-absorbing heating element were as follows:
It is described in Japanese Patent Publication No. 56-45047 and Japanese Patent Application Laid-Open No. 62-142929. However, the Special Public Service in 1983-
In the structure described in Publication No. 45047, heating is performed from all around, so although food can be browned, it cannot be cooked properly. Also, JP-A-62-
The structure described in Publication No. 142929 has a microwave absorbing material on the inner wall, so the firepower is weak.
It is difficult to control the temperature of the food, making it impossible to cook delicious rice.

<Problem to be solved by the present invention> The object is to provide a structure that allows delicious rice to be cooked in a microwave oven (single-function) even in a container with a built-in heating element that absorbs microwaves and generates heat.

<Means to solve the problem> In order to create a rice cooker that uses the inside of a microwave oven to cook rice, a microwave absorbing material is added to the inner bottom of the container, which has an interior and exterior made of insulation. A molded plate of a heating element is attached, and a rice cooking container is placed on top of this heating plate, and the water containing rice is convection heated by heat transfer from the bottom, allowing for powerful heating. In addition, in order to enable this heating method,
Make the lower half of the exterior transparent to microwaves,
The upper half has a structure that reflects microwaves.

<Function> By using the same heating structure as an electric rice cooker,
Delicious rice can be cooked in the microwave.

<Example> An example of the microwave heating rice cooker according to the present invention will be described based on the drawings.

FIG. 1 is a vertical sectional view of the microwave rice cooker, which is roughly divided into a lid 10 and a container 11. The lid 10 consists of an outer lid case 12 whose handle is integrally molded from a material with excellent heat resistance and microwave resistance, such as polypropylene resin, and an inner lid case 13 made of a metal material such as stainless steel, and the space between the two cases is filled. The heat insulating material 14 has excellent heat resistance and water resistance, such as glass wool.

The opening flange B of the container 11 and the fitting flange A of the lid 10 include
It forms the surface that shields microwaves and is made of a metal material such as stainless steel.

The lid 10 is designed to prevent microwaves from the outside from penetrating inside.

The container 11 has a structure in which microwave transmission occurs around the lower half of the container 11 and from the bottom surface. For heating when cooking rice, it is preferable to use a convection method in which heat is applied from the bottom of the rice cooking container 20 and the heat is transferred upward. Therefore, in order to use the lower half as a heat source by transmitting the microwaves in the lower half, the outer case (outer pot) 16
The Y part consists of an outer case (top) 16a made of a printed steel plate coated with heat-resistant polyester or acrylic paint, and an outer case (bottom) 16b made of heat-resistant plastic (polypropylene, ABS resin). Connected by mating.
Similarly, an inner case (inner pot) 15 is connected to an outer case (upper) 15a made of an aluminum-plated steel plate via a heat insulating material filling layer 14 (glass wool, ceramic wool of alumina silica), and a ceramic container or a heat-resistant container. Outer case (bottom) made of PPS (polyphenylsulfone) with glass inserts (bottom) 1
5b.

At the center of the bottom of the inner case 15, there are disposed a heat plate 17 made of a SiC ceramic molded body that absorbs microwaves and generates heat, and a heat-sensitive support 18 that senses heat and supports the rice-cooking container 20. Reference numeral 19 denotes a fitting portion that is fitted into a turntable driving coupling ring to rotate the rice cooker. The rice cooking container 20 is an aluminum inner pot coated with fluororesin, and is placed on a hot plate 17 disposed at the inner bottom of the inner case 15 to absorb heat generated by microwaves that enter from the lower periphery of the container 11. The heat from the plate 17 heats the bottom of the pot.

When the microwave rice cooker 1 with the above configuration is set in the oven 3 of the microwave oven 2 as shown in Fig. 2 and rice is heated, fluffy and delicious rice is produced by downward heating similar to an electric rice cooker. It's done.

<Effects> In the microwave rice cooker of the present invention, the parts other than the lid and the lower half of the container are made of microwave-resistant material, only the lower half is made of microwave-transparent material, and the inner bottom of the container is made of microwave-resistant material. Since a heat plate made of a wave-absorbing heating element is installed, heating from the bottom of the rice-cooking container generates convection in the water in the rice-cooking container from the bottom upwards, and the overall temperature of the water in the rice-cooking container is adjusted. This allows the rice in the rice cooker to absorb water evenly, resulting in delicious rice.

In addition, the lid and the upper half of the container are made of microwave-resistant material, which prevents partial heating that occurs when water and rice are directly heated using microwaves, thereby preventing uneven cooking. It is possible,
Moreover, since the rice is not directly heated by microwaves and is cooked using water at a raised temperature, the rice can absorb sufficient moisture and can be cooked well.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of the microwave rice cooker according to the present invention, and FIG. 2 is a schematic diagram showing how it is used. Code, 10...Lid, 11...Container, 17...Microwave absorption heating element (hot plate), 20...Rice cooking container.

Claims (1)

[Scope of Claim for Utility Model Registration] In a microwave rice cooker consisting of a lid and a container filled with a heat insulating material between an outer case and an inner case, and a rice cooking container that is stored in the lid and container so as to be freely accessible, The lid is made of a microwave-resistant material, the upper half of the container is made of a microwave-resistant material, and the lower half is made of a microwave-transparent material. A microwave heating rice cooker, characterized in that a heating plate made of a microwave-absorbing heating element is disposed at the inner bottom, and the rice cooking container is placed on the semi-heating plate.