JPH08280529A - Electric rice cooker - Google Patents

Abstract

PURPOSE: To provide an electric rice cooker rarely boiled over even when an ordinary quantity of water or above is added by providing a main body, an inner pot, and a cover body closing the inner pot, providing a steam port communicating the inner pot with the outside air on the cover body, and providing a porous body hindering at least the shift of a glutinous substance on the steam port. CONSTITUTION: An inner pot 1 is closed by an inner cover 2. A heating device and a control device are stored in a main body 3, and the inner pot 1 is heated. The cover body 4 is constituted of an upper member 4A and a lower member 4B, and steam holes are provided on the inner cover 2 at several positions. A cylindrical packing 7 constitutes a steam port 8, and it is fitted to surround the through hole 4D of the lower member 4A. A porous body 9 is fitted to a through hole 4H provided on the upper member 4A in the gap between the upper member 4A and the lower member 4B. The cylindrical packing 7 and the porous body 9 close the connection section between the upper member 4A and the lower member 4B so that the steam and glutinous substance lifted from the steam hole of the inner cover 2 do not leak to the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric rice cooker used in general households.

[0002]

2. Description of the Related Art Generally, it is known that, in a rice cooker, when rice and water in an inner pot are heated during rice cooking, starch of rice is eluted into water, and after boiling, it becomes oneva together with steam. There is. Hereinafter, a conventional rice cooker will be described with reference to FIG. 7. In the figure, 1 is an inner pot for containing rice and water, which is closed by an inner lid 2. Reference numeral 4 denotes a lid that covers the inner pot 1 and the inner lid 2, and is composed of an upper surface member 4A made of synthetic resin and a lower surface member 4B made of metal. Also, the inner lid 2
Has steam holes at several positions, and is attached to a support pin 5 that is provided so as to project downward from the lower surface member 4B of the lid body 4 via a holder-6. Reference numeral 7 is a cylindrical packing made of synthetic rubber that constitutes the steam port 8, and is attached so as to surround the through hole 4C of the upper surface member 4A and the through hole 4D of the lower surface member 4B.

When rice is cooked in the above-mentioned structure, steam and foam-like oneeva blow up as the pressure in the inner pot 1 rises, and the blown oneeva goes through the steam holes of the inner lid 2 to the upper part of the inner pot 2. Will be accumulated in.

[0004]

However, in the above-mentioned conventional configuration, when the steam pressure in the inner pot 1 becomes excessively high during rice cooking due to the recent increase in output of the electric rice cooker,
When rice is cooked with a proper amount or more of water to cook rice that is softer than ordinary rice, oneeva becomes a foam and rises above the steam hole of the inner lid 2 to cover the lid 4 There is a problem that the oneeba is discharged to the outside of the body through the through hole 4C of the upper surface member 4A and falls on the floor surface, that is, a so-called spillage occurs. In addition, as a countermeasure, the heating power was lowered slightly during cooking to prevent spillage.

The present invention solves the above-mentioned conventional problems and provides an electric rice cooker in which a porous body is interposed between the inner pot and the outside air to prevent spillage even when water is added in excess of the normal amount of water. The first object is to improve the rice cooking performance by preventing unnecessary reduction of heating power during rice cooking.

A second object is to prevent the steam port of the lid body from being contaminated, and at the same time facilitate the washing of the inner lid provided with the porous body with water.

Further, even when the vapor passing through the porous body is cooled and becomes a liquid, the third purpose is to maintain the hygienic property of the lid by refluxing the accumulated liquid in the inner pot. I am trying.

[0008]

In order to achieve the above first object, the present invention comprises a main body, an inner pot removably housed in the main body, and a lid for closing the inner pot. The lid has a steam port that communicates the inner pot with the outside air, and at least a porous body that prevents the movement of Oneva is provided in the steam port.

In order to achieve the second object,
The present invention relates to a main body, an inner pot removably housed in the main body, a lid body having a steam port for closing the inner pot and communicating the inner pot with the outside air, and an inner lid for sealing the inner pot and having a through hole. The inner lid has a structure in which at least a porous body that prevents the movement of Oneva is stretched in the through hole.

Further, in order to achieve the above-mentioned third object, the present invention uses as its constituent elements an inner lid provided with a through hole for returning and a valve for closing the returning hole from below. .

[0011]

With the above structure, the present invention can collect the foam-like oneva generated in the inner pot during rice cooking in the main body.

Further, a through hole is provided in the inner lid, and a porous body is stretched in the through hole to prevent the vapor port of the lid from being contaminated. Further, by removing the inner lid, the vicinity of the porous body can be easily formed. It can be washed with water and the careability can be improved.

Further, by providing a return hole penetrating into the inner pot around the porous body and a valve for closing the return hole from below, the steam or a small amount of Oneva which has passed through the porous body is cooled. Even if it becomes liquid and accumulates on the porous body, the valve acts to open the return hole, so that the accumulated liquid can be returned to the inner pot. In addition, since the pressure in the inner pot is high during heating, it acts to close the return hole even if the valve is pushed up, so Oneeva is not discharged outside through the return hole and hygiene is effective. Can be kept at

[0014]

【Example】

(First Embodiment) An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes an inner pot for containing rice and water, which is closed by an inner lid 2.
Reference numeral 3 is a main body that surrounds the inner pot 1, and 4 is a lid that covers the inner pot 1. A heating device and its control device (both not shown) are built in the main body 3 so that the inner pot 1 is heated to cook rice. The lid 4 is a synthetic resin upper surface member 4A.
And a metallic lower surface member 4B. Also,
The inner lid 2 is provided with steam holes at several places, and the holder-
It is attached to a support pin 5 which is provided so as to project downward from the lower surface member 4B via 6. 7 is a cylindrical packing made of synthetic rubber that constitutes the steam port 8, and is a top surface member 4
The vapor of the inner lid 2 is attached so as to surround the porous body 9 attached to the through hole 4H provided in the upper surface member 4A and the through hole 4D of the lower surface member 4B in the gap between A and the lower surface member 4B. The connecting portion with the upper surface member 4A and the lower surface member 4B is sealed with a packing 7 so that steam and Oneva rising upward from the hole do not leak outside. A through hole 4H is provided in the upper surface member 4A, and a porous body 9 is attached to the inside of the through hole 4H. The porous body 9 is a filter made of, for example, tetrafluoroethylene resin or polyamide.
The thickness is 50 to 100 μm, the pore size is 5 to 100 μm, and the porosity is about 80% or more, but a ceramic sintered body or the like through which only steam passes may be used. Further, the surface area of the porous body 9 is set so that the internal pressure in the pan during rice cooking becomes a predetermined value or less.

The operation of the electric rice cooker configured as described above will be described. When rice is cooked in the above configuration, steam and foam-like oneeva blow up as the pressure in the inner pot 1 rises, pass through the steam port 8 of the lid 4 and reach the porous body 9. Here, the vapor passes through the porous body 9 as it is and is released to the outside of the lid body 4, but most of the oneeva cannot pass through the porous body 9 and is not released to the outside of the body. Moreover, since the porous body 9 is provided in the vapor port 8 of the lid body 4, spillage can be prevented regardless of the presence or absence of the inner lid 2. As a result, the inner lid 2 can be eliminated and the usability can be improved. Although the porous body 9 is attached to the steam port 8 of the lid 4 in this embodiment, the same effect can be obtained if the porous body 9 is interposed between the inner pot 1 and the outside air. Needless to say, can be obtained.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIGS. 3 and 4. FIG.
In the above, 1 is an inner pot for containing rice and water, which is closed by the inner lid of 2. Reference numeral 4 is a lid that covers the inner pot 1, and is composed of an upper surface member 4A made of synthetic resin and a lower surface member 4B made of metal. Further, a through hole is provided in the inner lid 2, and the porous body 9 is stretched over the through hole. 7 is a cylindrical packing made of synthetic rubber that constitutes the steam port 8, and is a top surface member 4
It is attached in a gap between A and the lower surface member 4B so as to surround the through hole 4C of the upper surface member 4A and the through hole 4D of the lower surface member 4B.

The operation of the electric rice cooker configured as described above will be described. When rice is cooked in the above configuration, steam and foam-like oneeva blow up as the pressure in the inner pot 1 rises, and reach the porous body 9 provided on the inner lid 2. Here, the vapor passes through the porous body 9 as it is, and the lid 4
Most of the oneeva cannot pass through the porous body 9 and remains in the inner pot 1 though it is discharged from the steam port 8 of the. Therefore, it is possible to prevent spillage and prevent the steam port 8 from becoming dirty, and by removing the inner lid 2, the porous body 9 can be removed and easily washed with water, and the careability can be improved.

(Third Embodiment) A third embodiment of the present invention will be described below with reference to FIGS. In the figure, the return hole 10 has a diameter of 2 to 3 mm, and the valve 11 is made of synthetic rubber and is attached so as to close the return hole 10 from below with the inner lid 2 set in the main body.

The operation of the electric rice cooker configured as described above will be described. When rice is cooked in the above-mentioned configuration, as in the second embodiment, as the pressure in the inner pot 1 rises, steam and foamy oneva blow up and reach the porous body 9 provided on the inner lid 2. Here, the vapor passes through the porous body 9 as it is, and is discharged to the outside of the body through the vapor port 8 of the lid body 4. However, most of the oneva cannot pass through the porous body 9 and the inner pot 1 Stay inside. However, even if vapor or a small amount of foam-like oneva which has passed through the porous body 9 is cooled and turned into a liquid in the heat retention step or the like, there is a possibility that it will be accumulated on the inner lid 2 as it is. At this time, since the internal pressure in the inner pot 1 is slightly lowered, the valve 11 is opened, and the oneba accumulated as a liquid on the inner lid 2 can be returned to the inner pot 1 through the return hole 10. Also, when cooking rice, the inner pot 1
When the internal pressure in the inside is large, the valve 11 is lifted up and closes the return hole 10, so that Oneeva can be prevented from blowing up onto the inner lid 2.

In this embodiment, the inner cover 2 has a return hole 1
Although 0 is provided, it is needless to say that it may be provided other than the inner lid 2 as long as the liquid accumulated on the porous body 9 is returned to the inner pot 1.

[0021]

As described above, according to the present invention, since the porous body is interposed between the inside of the inner pot and the outside air, it is possible to prevent spillage to the outside of the container. Therefore, it is possible to heat the rice in an almost ideal state without needing to unduly reduce the heating power during rice cooking, and it is possible to improve the rice cooking performance.

Further, a through hole is provided in the inner lid, and a porous body is stretched in this through hole to prevent the vapor port of the lid from being soiled, and the inner lid is removed to wash the vicinity of the porous body with water. Can be facilitated and the careability can be improved.

Further, by providing a return hole penetrating into the inner pot around the porous body and providing a valve for closing the return hole from below, the liquid accumulated on the porous body is placed in the inner pot. It can be refluxed, and the hygiene can be easily maintained.

[Brief description of drawings]

FIG. 1 is a sectional view of an electric rice cooker according to a first embodiment of the present invention.

[Fig. 2] Same as the external view of the electric rice cooker

FIG. 3 is a sectional view of an electric rice cooker according to a second embodiment of the present invention.

FIG. 4 is a plan view of the same inner lid.

FIG. 5 is a plan view of the inner lid of the electric rice cooker according to the third embodiment of the present invention.

FIG. 6 is a sectional view of the inner cover around the return hole of the same.

FIG. 7 is a sectional view showing a conventional electric rice cooker.

[Explanation of symbols]

 1 Inner pan 2 Inner lid 3 Main body 4 Lid body 8 Steam port 9 Porous body 10 Return hole 11 Valve

Claims (3)

[Claims] 1. A main body, an inner pot removably housed in the main body, and a lid for closing the inner pot, the lid having a steam port for communicating the inner pot with the outside air. An electric rice cooker having a structure in which at least a porous body that prevents movement of oneba is provided in the mouth. 2. A main body, an inner pot removably housed in the main body, a lid having a steam port for closing the inner pot and communicating the inner pot with the outside air, and an inner pot for sealing the inner pot and having a through hole. Equipped with a lid,
The inner lid is an electric rice cooker having a structure in which at least a porous body that prevents movement of oneba is stretched in a through hole. 3. The electric rice cooker according to claim 2, wherein the inner lid is provided with a penetrating return hole and a valve closing the return hole from below.