JP3368711B2 - rice cooker - Google Patents

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.

[0005] The present invention is intended to solve the above problems, prevents contamination of the steam outlet of the lid, the first object to facilitate the lid of washing among stretched over the porous body at the same time And

A second object is to maintain the hygiene of the lid effectively by returning the accumulated liquid to the inner pot even when the vapor passing through the porous body is cooled to become a liquid. I am trying.

[0007]

In order to achieve the above-mentioned first object, the present invention provides a body, an inner pot removably housed in the body, and an inner pot closed to communicate the inner pot with the outside air. It has a lid body having a steam port and an inner lid that seals the inner pot and has a through hole, and 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 second object, the present invention has as its constituent elements an inner lid provided with a through hole for returning and a valve for closing the returning hole from below. .

[0009]

According to the present invention, the inner lid is provided with a through hole, and the porous body is stretched over 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 is provided. It can be washed easily 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 vapor 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

[0011]

Embodiments (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 body 4 includes an upper surface member 4A made of synthetic resin and a lower surface member 4 made of metal.
It is composed of B. In addition, the inner lid 2 is provided with steam holes at several places, and the lower surface member 4 is provided via the holder 6.
It is attached to a support pin 5 provided so as to project downward from B. Reference numeral 7 is a cylindrical packing made of synthetic rubber that constitutes the vapor port 8, and is a porous material that is attached in a gap between the upper surface member 4A and the lower surface member 4B and in a through hole 4H provided in the upper surface member 4A. Through hole 4D of body 9 and lower surface member 4B
It is attached so as to surround the inner lid 2 so that steam and Oneva that rise above the steam hole of the inner lid 2 do not leak to the outside.
The packing 7 seals the connection between the upper surface member 4A and the lower surface member 4B. Further, 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, Thickness 50-100
A material having a diameter of 5 μm, a diameter of 5 to 100 μm, and a porosity of 80% or more is used, 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. In FIG. 3, reference numeral 1 is an inner pot for containing rice and water, which is closed by an 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. Reference numeral 7 denotes a cylindrical packing made of synthetic rubber that constitutes the vapor port 8, and is a gap between the upper surface member 4A and the lower surface member 4B, and the through hole 4C of the upper surface member 4A and the through hole 4D of the lower surface member 4B. It is attached so as to surround it.

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
~ 3mm, and the valve 11 is made of synthetic rubber and the inner lid 2
Is installed in the body so as to close the return hole 10 from below.

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.

[0018]

As described above, according to the present invention, the inner lid is provided with the through hole, and the porous body is stretched over the through hole to prevent the vapor port of the lid from being soiled and remove the inner lid. This makes it easy to wash the vicinity of the porous body with water and improve the careability.

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 pot 2 Inner lid 3 body 4 Lid 8 steam port 9 Porous body 10 back hole 11 valves

Continued front page       (56) Reference JP-A-4-170913 (JP, A)                 58-54225 (JP, U)                 62-115820 (JP, U)                 59-130622 (JP, U)                 Actual development Sho 60-106541 (JP, U)

Claims (2)

(57) [Claims] 1. A body, an inner pot removably housed in the 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. Wherein the lid, electric cooker according to claim 1, wherein the back holes and through-back hole has a configuration providing a valve to close from the downward direction.