JPS5832053Y2 - Valves for steam pressure cooking pots - Google Patents

Description

[Detailed description of the invention] The present invention relates to a valve for a steam pressure cooking pot, which allows the set pressure inside the pot to be changed and adjusted, and prevents the valve from becoming too loose and falling off the lid of the pot. Do it like this.

The purpose is to Generally, steam pressure cookers are equipped with a valve that integrates a pressure display device consisting of a spring-loaded pin and a pressure limiting device for setting the pressure inside the pot (steam jet pressure). be.

When the pressure of steam ejecting from the pot is high, the pressure inside the pot increases and the boiling temperature also increases, so there is less energy loss, which is advantageous when economic efficiency is important.

Also, it is better to choose a relatively low pressure for dishes that respect delicate tastes.

For example, lower pressure is better for cooking ingredients that contain high amounts of vitamins, such as vegetables.

Therefore, in order to be able to adjust the steam ejection pressure, a pressure limiting device configured as shown in FIG. 6 is known.

In the valve shown in FIG. 6, a valve box 31 with an open top is fixed to a pot lid 30, a valve element 32 is mounted inside the valve box 31, and a valve cover 33 is attached to the top of the valve box 31. The valve is screwed on to cover the upper opening of the valve box 31, and a valve opening pressure setting spring 34 is installed between the inner surface of the clay wall of the valve cover 33 and the valve element 32, and the valve is opened by rotating the valve cover 33. The pressure can be adjusted.

However, in this case, there was no structure to restrict the rotation of the valve cover 33, so the steam ejection pressure could be set by rotating the valve cover 33 or removing the valve at a retail store or at home. The problem was that it made the system go crazy.

This invention was proposed to solve the above problem.The valve mounting hole is opened in the lid of the pot, and the valve box of the pressure setting valve is hermetically fixed in this hole with a fixture. The valve seat is formed upward in the valve body so that the valve body can be opened and closed from above, and the spring that closes and biases the valve body is received by the valve cover. The lid and valve cover are threadedly fitted so that they can move forward and backward in the valve closing pressing direction, and an arcuate groove is provided on one side of the lid and the valve cover, and an excessive rotation prevention pin that protrudes into the arcuate groove is provided on the other side. By forming the surface into a blocking part that prevents excessive rotation of the valve cover, and by forming the valve cover so that the rotation can be freely adjusted only within the length of the circular groove, the rotation range of the valve cover is limited and the steam ejection pressure is can be set freely only within a certain range.

To achieve this objective, the present invention is characterized by the following configuration.

That is, a circular arc groove of a certain length is formed along a plane perpendicular to the axis of the valve attached to the lid of the pot, and a pin is formed on the outer surface of the lid facing the valve in parallel to the axis of the valve. is installed protrudingly.

This pin is loosely fitted into the arcuate groove and can freely rotate only within the range of the groove length.

It is also conceivable to form the arcuate groove on the lid and fix the pin to protrude from the valve.

Since the length of the curved line of the arcuate groove is limited, when the pin fits into this small groove, the angle that the valve can rotate is inevitably limited, so when adjusting the valve to obtain the required cooking pressure. Also, it is impossible for the valve to turn too much and fall off.

The valve is pre-adjusted to suit this purpose perfectly.

The pin engages with the arcuate groove and is adapted to be received at the end of the arcuate groove.

The valve is also fixed to the lid with - nuts from inside the pot.

Embodiments of the present invention will be described below with reference to the drawings.

A valve (2) having a valve body 2 and a valve cover 5 is fixed to a lid 1 of a pressure cooking pot.

The valve body 2 is pressed against the valve seat 3 of the valve body 18 by a cooking spring 4.

The valve cover 5 is screwed in by screws 6 so as to cover the valve body 18.

The upper end of the cooking spring 4 is supported by the valve cover 5, and the lower end thereof is supported by the valve body 2.

A pressure indicating pin 8 is slidably inserted through a through hole 2a provided in the center of the valve body 2 in an airtight manner.

The force of the display spring 7 is applied to this pressure display pin 8.

Valve (2) is composed of a valve cover 5, a valve body 2, a cooking spring 4, pressure display devices 7, 8, and a valve box 18.

The small diameter lower half 18a of the valve box 18 is inserted into the valve mounting hole 15 opened in the lid 1, and is fixed to the lid 1 with a lock and nut 14 from inside the lid 1.

As shown in FIG. 2, a pin 10 fixedly protruding upward from the lid 1 can slide into a groove 9 formed in an arc shape on the lower surface of the valve cover 5 only within the length of this groove. It is loosely fitted.

Both ends 9 a and 9 b of the arcuate groove 9 serve as stoppers for the pin 10, thereby preventing the cover 5 from rotating excessively.

The function of this valve (■) is as follows.

That is, since the display pin 8 is pushed up against the spring 7 in proportion to the internal pressure of the pan, the internal pressure of the pan can be determined by the length of the pressure display section 11 at the upper end of the display pin 8 protruding from the upper end of the cover 5. I can do it.

The pressure inside the pot is adjusted by turning the cover 5, which is raised and lowered by the screw 6 and released by the spring 4.
The tension can be changed.

When the cover 5 is rotated in this manner, the pin 10 prevents excessive rotation of the arcuate groove 9, so that the cover 5 does not rotate beyond a predetermined proper angle.

This prevents the cover 5 from being loosened too much by external force or internal pressure and falling off.

In order to do this, the valve (2) is completely assembled before being attached to the lid 1 of the pot.

Then, the arcuate groove 9 is fitted onto the pin 10, and the valve box 18 is attached to the lid 1.

Here, in order to perfectly balance the position of the valve ■ and the strength of the spring, it is necessary to make sure that the circumferential position of the entire valve ■ along with the valve body 18 fits perfectly with the pin 10. It must be pre-calculated.

To determine this position, as shown in FIG. is helpful.

First, place the fully assembled valve ■ on the lid.

Then, the pin 10 is fitted into the arcuate groove 9.

Then, place the lock nut 14 from below over the male thread cut in the small diameter lower half 18a protruding from the back side of the valve mounting hole 15 of the valve box 18, and tighten.

The valve V is thus firmly fixed to the pot lid 1.

In this way, it is no longer possible to loosen the screw 6 of the valve (2) too much from the outside.

However, pressure regulation rotation is possible only within the angular range allowed by the arcuate groove 9.

By simply tightening the lock nut 14 by hand, the valve body 18 is securely and reliably secured to the pot lid 1 by the action of the O-ring 19.

Therefore, once the lid 1 of the pot is closed, it is no longer possible to remove the valve 1, regardless of whether pressure is applied to the pot or not.

In the example taken here, as is clear from the figure, the valve is turned by approximately 180° to adjust the pressure.

As shown in FIG. 4, a pressure indicator 16 is marked on the cover 5, and this indicates the maximum cooking pressure display 17a in the upper part of the figure.

The intermediate pressure indication is indicated by 17b and the lowest pressure indication by 17.

These pressure indicators 17, 17a, 17b are marked on the lid 1, anywhere on which the pressure indicator 16 can be adjusted.

Depending on the spring constant of the cooking spring 4, a very wide range of cooking pressures can be obtained.

Since the present invention is constructed and operates as described above, it has the following effects.

B. Just by screwing the valve cover 5 of the valve ■ exposed on the lid 1 of the pot, you can adjust the tension of the cooking spring 4 and adjust the tension of the valve body 2.
You can easily and quickly adjust the valve opening pressure, that is, the maximum boiling temperature in the pot.

The excessive rotation prevention action of the excessive rotation prevention pin 10 and the arcuate groove 9 reliably prevents the pulp cover 5 from being excessively screwed on either the high pressure side or the low pressure side.

Thereby, it is possible to eliminate poor boiling due to excessive or insufficient maximum pressure or maximum temperature in the pot.

Furthermore, the valve cover 5 does not become too loose and fall off, and it is possible to prevent the occurrence of an explosive ejection accident from the valve box 18 of steam in the pot or boiled food due to the valve cover 5 coming off and falling off.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal front view, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is an exploded side view, and Fig.
The figure is a plan view, FIG. 5 is a perspective view of the pot with the lid open, and FIG. 6 is a vertical sectional view of the main part of the conventional example. 1... Lid, 2... Valve body, 3...
・Valve seat, 4... Spring, 5... Valve cover, 6... Screw fitting, 9... Excessive rotation prevention circular arc groove, 9a, 9b... Excessive rotation blocking tool, 10... Excessive rotation blocking tool (pin), 14
... Fixing tool (nut), 15 ... Valve mounting hole, 18 ... Valve box.

Claims (1)

[Scope of utility model registration request] 1. A valve mounting hole 15 is opened in the lid 1 of the pot, and a valve box 18 of a pressure setting valve V is hermetically fixed to the valve mounting hole 15 with a fixture 14, and the valve is formed upward in the valve box 18. The valve body 2 can be opened and closed from above on the seat 3, and the valve body 2
The spring 4 that closes and biases the valve is received by the valve cover 5,
The valve cover 5 is screw-fitted 6 into the valve box 18 so as to be movable forward and backward in the valve closing pressing direction of the spring 4, and an arcuate groove 9 is provided on one side of the lid 1 and the valve cover 5, and the arcuate groove 9 is provided on the other side. An excessive rotation prevention pin 10 protruding into the arcuate groove 9 is provided, and both end surfaces of the arcuate groove 9 are formed into prevention portions 9a and 9b for preventing excessive rotation of the valve cover 5.
A valve for a steam pressure cooking pot characterized by being formed so that its rotation can be freely adjusted only within the length range of the valve. 2. Scope of Utility Model Registration Claims In the valve for a steam pressure cooking pot described in claim 1, an excessive rotation prevention pin 10 is firmly and protrudingly provided on the lid 1, and an arcuate groove 9 is formed on the valve cover 5. 3. Scope of Utility Model Registration Claims In the valve for a steam pressure cooking pot described in claim 1, an excessive rotation prevention pin 10 is fixed and protruded from the valve cover 5, and an arcuate groove 9 is recessed in the lid 1. . 4. Scope of Utility Model Registration In the valve for a steam pressure cooking pot described in claim 1, 2, or 3, the fixture 14 consists of a nut, and this nut 14 It is screwed onto the part 18H that protrudes into the valve mounting hole 15.