JPS5933282Y2 - pressure regulating valve - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pressure regulating valve for a rice cooker that uses pressure cooking, and improves the stable operation and safety of the pressure regulating mechanism.

According to various data on rice cooking, the higher the rate of gelatinization of starch, the main component of rice, the sweeter the rice will be, the better it will be digested and absorbed, and the rice will be better cooked.

This gelatinization is promoted by water and heat, and from a thermal point of view it is 10
It is said that it develops rapidly around 0°C and accelerates further when the temperature exceeds 100'C.

However, in order to raise the temperature to over 100℃, the boiling point must be raised to 100℃.
Since it is necessary to keep the temperature above ℃, it is necessary to increase the internal pressure inside the pot.

Therefore, a weight valve and a valve seat have traditionally been used in the pressure increase mechanism, but it is important that the weight valve seat always and consistently contacts the valve seat even if the rice cooker is tilted or vibrates. there were.

The present invention was devised to accomplish this task.

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

FIG. 1 is a sectional view of the top of the rice cooker according to the present invention, and 1 is the main body of the rice cooker, 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 sink 10 with a heat retaining heater 9 is attached to the lower surface via a lid insulating material 8, and a steam cylinder 11 is further attached to the heat sink 10.
It penetrates the through hole of the outer cover 6.

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 hook lever 13 on the other side.

Reference numeral 14 denotes an inner lid made of an aluminum plate, with a silicone rubber backing 15 for sealing the pot 5 on the periphery, a silicone rubber valve seat 16 for cooking rice at a constant pressure, and a removable weight valve 17. We are prepared.

Furthermore, there is a silicone rubber bushing 18 in the center of the inner lid.
It is configured to be detachable from a pin 19 screwed onto the heat sink 10.

Next, the configuration of the valve seat 16 and the weight valve 17, which are the main parts of the present invention, will be explained based on FIGS. 2 and 3.

The upper end 20 of the valve seat 16 has a spherical R surface, and the ball R of the weight valve 17
It is in contact with the surface.

The valve seat 16 has a through hole in the center, and the through hole is connected to the upper end 2.
Rib 21 having the same spherical R surface as the upper end portion 20 at 0
is continuously formed and protrudes from the center.

Furthermore, the protruding rib 21 is configured with one or more notches 22.

Regarding the configuration with the weight valve 17, the valve seat upper end 2
The inner diameter of the rib 21 provided at 0 is the lower end of the weight valve 2.
The outer diameter cl of the valve seat 16 has a relational dimension of a < b < c between the outer diameter a of the upper cylindrical part 24 at its lower end, and by utilizing this dimension and the elasticity of the silicone rubber material of the valve seat 16,
It is held removably.

As described above, according to the present invention, since the elastic valve seat rib 21 has the notch 22, the rib 21 is easily deformed during attachment and detachment, and the weight valve tip 23 is easily deformed.
can be easily attached and detached from the valve seat rib 21,
It becomes very easy to use.

In addition, during pressure regulation, since the weight valve 17 and the upper end of the valve seat are in contact with each other at the spherical R surface, the weight valve 17 is stably held on the valve seat 16, making it possible to obtain stable operation. .

[Brief explanation of the drawing]

FIG. 1 is a top sectional view of a rice cooker showing an embodiment of the present invention;
FIG. 2 is a plan view showing the pressure regulating valve used in the rice cooker shown in FIG. 1, and FIG. 3 is a sectional view of the turn section. 1... Rice cooker body, 5... Rice cooking pot,
6...Outer lid, 7...Handle, 9...
... Heat retention heater, 10 ... Heat sink, 11
...Steam cylinder, 14...Aluminum plate inner lid,
16... Valve seat, 17... Weight valve, 2
0... Valve seat upper end, 21... Valve seat rib, 22... Notch, 23... Weight valve end, 24... ... Weight valve cylindrical part.

Claims (1)

[Scope of utility model registration request] In a pressure regulating valve that has a resilient valve seat and a stopper structure at the lower end of the weight valve, the abutting part between the two is a spherical R surface, and there is a hole for inserting and removing the weight valve in the center of the valve seat, and the upper end of the valve seat has a stopper structure. 1. A pressure regulating valve, characterized in that a protruding part is provided in which the R surface of the sphere comes into contact with the weight valve, and the protruding part is provided with one or more notches.