JPS59186523A - Cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cooker that requires a pot to be airtight in order to perform pressure cooking.

Conventional structure and its problems Traditionally, pressure cooking requires a tight seal inside the pot, so there is a negative pressure caused by the reduced pressure after cooking is completed, and there is a risk of pressure inside the pot when the outer lid is opened. Measures must be taken to deal with temporary negative pressure. In particular, if the latter is removably configured so that the inner cover engages with a pin or the like located below the outer cover and can be operated as one unit when opening and closing, the negative pressure generated when the outer cover is opened causes the inner cover to This caused the phenomenon of withdrawal. As a countermeasure for this, a through hole is provided in the inner lid, and a flexible brim that contacts and covers the through hole from below is used. During cooking, the through hole is covered to maintain airtightness, and when negative pressure is generated. ,
The buckle part bends downward to open the through hole part. However, when cooking is complete, the inner lid and buckwheat part are in close contact, and in some cases, there is no air between them due to a thin water film, so the buckwheat part When the pot tries to sag downward, a negative pressure phenomenon is created between the inner lid and the buckwheat part that temporarily prevents the buckwheat from moving, and if the balance between the two is lost, the function of releasing the negative pressure inside the pot decreases. Otherwise, it disappeared and the inner lid detached. In order to prevent this, it is possible to strengthen the strength of the attachment part of the inner lid, but this would be extremely inconvenient for the user considering the detachable function, and cannot be evaluated as an effective countermeasure.

OBJECTS OF THE INVENTION The present invention has been made to solve these conventional problems, and an object of the present invention is to provide a rice cooker that has a simple structure and is easy to use.

In order to achieve the above object, the present invention comprises a pot attached to a main body, an inner lid having a tin filling opening and a backing attached to the peripheral edge, and a pot attached to the inner lid. The through hole is located on the lower surface side of the inner lid, and a protruding portion is provided between the fulcrum of this flexure and the inner lid through hole on a thin flexible brim that covers the through hole, and the inner lid through hole is provided. A constant gap is provided between the part and the flexible buckwheat noodles.The protruding part 11 provided on the buckwheat provides a gap between the through-hole part of the inner lid and the buckwheat noodles, so that the inner lid does not become transparent when there is negative pressure inside the pot. This ensures that the hole is opened.

Description of examples An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 denotes the main body of the device, which is composed of a cylindrical outer shell 2, a protective frame 3, a heat insulating material 4 interposed between the two, and the like.

Reference numeral 5 denotes a pot serving as a rice cooking container, which has an arbitrary gap from the opening of the protective frame 3 and is detachably provided. On the other hand, the outer lid 6 and the handle 7 are integrally molded, and a heat radiating plate 1o with a heat retaining heater 9 is attached to the lower surface via a lid insulating material 8, and a steam cylinder 11 is also conveniently attached to the heat radiating plate 1o. . Further, the outer cover 6 is pivotally supported on the main body 1 by a shaft 12, and is engaged with the main body 1 by a flap lever 13 on the other side. 14 is an inner lid made of an aluminum plate, and a bank 15 is provided at the outer edge to tightly cover the pot 5. Furthermore, it is provided with a valve seat 16 made of silicone rubber for cooking at a constant pressure, and a weighted valve 17 that can be attached to and detached from the valve seat 16 at will.

Furthermore, in the center of the inner lid 14, a bunon 18 made of silicone rubber is provided to be integrally attached to the lid side and to generate a downward biasing force on the inner lid when closed, and is screwed onto the heat dissipation plate 10. It is configured to be detachably attached to a pin 19.

Next, the structure of the inner cover 14 and the valve seat 16, which are the main parts of the present invention, will be explained based on FIGS. 2a and 2b. The valve seat 16 is the inner cover 14
It is attached to the inner cover 14 with the upper valve seat flange 20 inserted through the plane through-hole part of the inner cover 149U, and is located below the inner cover 114.
Thin buckwheat portion 22 with protruding ribs 21. and a holding portion for holding the valve 17 are integrally molded. In addition, the inner cover 14 is smaller than the through hole of the valve seat flange 20 and the outer diameter of the valve seat flange 22, and is located at a position that is smaller than the rib 21 of the valve seat flange 22 and the outer diameter of the valve seat flange. It has a through hole 23. In addition, the ribs 21 (14) of the valve seat buckle part 22 are formed so as to have a certain gap δ of 2 mm or less with the inner M14 (14) during cooking.
1 Start of heating: A relationship of P4 × P2 occurs between the pressure P1 on the side of the C-accompanied valve 17 and the pressure 22 of the pot 6. In addition, the ice particles that adhere to the gap 6 also obstruct the escape of steam, and this pressure relationship This contributes to the generation of pressure, and the valve seat flange 22 is pushed up by the inner lid through hole 23 as shown in Figs. After the cooking is completed, the gap δ is again formed in the valve seat flange 22 due to the force of restoring it to its original shape, and the inner lid through-hole 23 is opened.

Effects of the Invention As is clear from the configuration described above, according to the present invention, the inside of the pot is sealed during cooking, and after cooking is completed, the inside of the pot is opened using the through-hole portion of the inner lid, and when the outer lid is opened, the inside of the pot is sealed. The buckle part is easy to operate, outside air can easily flow in, there is no phenomenon of the inner lid coming off, and the problems of the conventional product can be easily solved without making the inner lid in any way inconvenient for the user, making it extremely valuable. It is something.

[Brief explanation of the drawing]

Fig. 1 is a top cross-sectional view of a jar rice cooker showing one embodiment of the present invention, Fig. 2a and Fig. 2 are cross-sectional views illustrating the operation of the same essential parts, and Fig. 3 is the same as Fig. 1. FIG. 1-main body, 6--pot, 14--inner lid, 15--backing, 21--rib, 22--brim portion, 23--through hole portion. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure °“' fl Figure 3

Claims (1)

[Claims] A pot that is attached to the main body, and an inner lid that covers the opening of the pot and has a backing attached to the periphery, and a through hole provided in the inner lid is located on the lower side of the inner lid, and the through hole A thin, flexible brim that covers the body is provided with a protrusion between the fulcrum of this deflection and the inner lid through-hole, and a certain gap is provided between the inner lid through-hole and the flexible brim. vessel.