JPS59186528A - Pressure regulating valve - 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 Industrial Application The present invention relates to a pressure regulating valve for a rice cooker or the like that employs pressure cooking.

Conventional structure and problems According to various data regarding rice cooking, it is said that the higher the rate of gelatinization of starch, which is the main component of rice, the sweeter it is, the better the digestibility and absorption, and the better the rice is cooked.

This gelatinization is promoted by water and heat, and from a thermal point of view it is 1
It rapidly develops around 00'C, and when it exceeds 100'C,
It is said to be further accelerated. However, 100°C
In order to raise the temperature above the boiling point of 100°C or higher, it is necessary to increase the pressure inside the pot. Therefore, conventionally,
It uses a pressure regulating valve that is larger than the valve seat and weight valve, and is removable for cleaning reasons. For this reason, countermeasures have been taken, such as attaching the knob for attaching and detaching the weight valve as a separate part. In addition, the center of gravity of the weight valve is located below the contact surface with the valve seat, and therefore, during pressure fluctuations during control, the weight valve is stable and does not easily fluctuate due to slight pressure fluctuations, resulting in a slight increase in pressure. It showed a trend.

OBJECTS OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide a pressure regulating valve that has a pressure fluctuation range of J/L and whose constituent members are easy to clean. 1- Structure of the Invention To achieve the above object, the present invention includes a resilient valve seat in which a through hole is formed in the vertical direction, and a weight valve placed on the valve seat. has an insertion part inserted into the through hole, and a large diameter part formed at the lower end of the insertion part, and a protruding part is provided on the inner surface of the through hole of the valve seat toward the center of the through hole, and A gap is formed in the upper part of the weight valve, and the center of gravity of the weight valve is set above the upper end of the valve seat,
The present invention provides a pressure regulating valve for a rice cooker, etc., which has stable pressure regulating operation.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be explained with reference to the accompanying drawings.

In the figure, 1 is the main body of the instrument, a cylindrical outer shell 2 and a protective frame 3.
, and is composed of a heat insulating material 4 and the like interposed between the two. 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 detachable. On the other hand, the outer lids 6 and 7 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 attached to the heat radiating plate 1°. It penetrates the through-hole portion of the lid 6. Further, the outer cover 6 is pivotally supported by the main body 1 by a shaft 12, and is engaged with the main body 1 by a lever 13 on the other side.

Reference numeral 14 denotes an inner lid made of an aluminum plate, which has a silicone rubber seal 15 on its periphery for sealing the pot 5, a silicone rubber valve seat 16 for cooking at a constant pressure, and a removable lid. A weight valve 1 is provided.Furthermore, a bush 18 made of silicone rubber is provided at the center of the inner lid, and is configured to be detachably attached to a bottle 19 screwed onto the heat sink 10.

Next, regarding the configuration of the weight valve 17 and the valve seat 16, the second valve seat 16
A through hole 2o is formed in the vertical direction in the center, and
The inner surface of the through hole 2o has a protrusion 21 that protrudes toward the center.
is formed. The weight valve 1 has a collar portion 22 at its upper portion, and a mounting portion 23 whose lower surface is a downwardly convex spherical surface and is placed and abutted on the upper end of the valve seat 16 is formed in the center portion.

Further, an insertion portion 24 inserted into the through hole 2° of the valve seat 16 and a large diameter portion 26 formed at the lower end of the insertion portion 24 are integrally formed below this placement portion 23. . The large diameter portion 26 is located below the protrusion 21. Regarding the dimensional relationship of each part, the diameter a of the flange 22 is larger than the diameter of the mounting part 23, so that the flange 22 can be easily caught by hand. Further, the diameter e of the large diameter portion 26 is larger than the inner diameter d of the protrusion 21, and the diameter of the insertion portion C is larger than the inner diameter d of the protrusion 21.
It's quite small. The valve seat 16 is made of silicone rubber or the like and has elasticity, and the weight valve 17 is detachable. Although the weight valve 17 can still be moved horizontally within the range of the gap between the protruding portion 21 and the insertion portion 24, the lower surface of the mounting portion of the weight valve 17 may be separated from the upper end of the valve seat 16. There isn't. Further, the center of gravity of the weight valve 17' Gld is above the upper end of the valve seat 16 by an arbitrary height h.

In the above configuration, the user can easily and reliably attach and detach the weight valve 17 and the valve seat 16 without adding any additional shoes due to the diameter difference between the weight valve 17 and the valve seat 16. Also, the weight valve 17
Since the center of gravity G is located above the upper end of the valve seat 16, the valve operates with slight pressure fluctuations, making it possible to always adjust the pressure near the set pressure. Since the equipment equipped with the weight valve 17 is not normally a vibrating body, malfunctions will not occur. Further, the tilting of the weight valve 17 within the movable range can always be performed stably because the lower surface of the mounting portion 23 of the weight valve 17 is a downwardly convex spherical surface.

Effects of the Invention As is clear from the above explanation, according to the present invention, the pressure can be regulated stably by simply using the shape of the weight valve without adding any other parts, and it is easy to attach and detach. kept clean.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the top of a jar rice cooker showing one embodiment of the present invention, and FIG. 2 is a sectional view of essential parts thereof. 16-- Valve seat, 17- Weight valve, 20- Penetration hole, 21- Protruding portion, 22- One flange portion, 24-
-Insertion part, 26-.-Large diameter part. .

Claims (1)

[Claims] a resilient valve seat with a through hole formed in the vertical direction;
a weight valve placed on the valve seat, the weight valve having an insertion portion inserted into the through hole and a large diameter portion formed at a lower end of the insertion portion, and the weight valve having a large diameter portion formed at a lower end of the insertion portion; The pressure regulating valve is provided with a protruding part protruding toward the center of the through hole on the inner surface of the through hole, and a collar is formed in the upper part of the weight valve, and the center of gravity of the weight valve is set above the upper end of the valve seat.