JPS624253Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention and Field of Application] This invention relates to a pressure regulating device for a pressure cooker, and more particularly, to a pressure regulating device equipped with pressure regulating and safety functions.

When the internal pressure reaches a predetermined value, a pressure cooker releases the internal pressure to the outside, maintaining the pressure close to the predetermined value, and also opens a safety valve if the internal pressure unexpectedly exceeds the predetermined value. ing.

This pressure regulation and safety valve function can be performed by one valve device.

[Prior art and its problems]

Japanese Utility Model Application Publication No. 57-149817 discloses that a pedestal with a valve seat located inside the lid and a spring retainer on the outside of the lid are fixed to the lid by screwing together, and a nozzle is mounted inside the spring retainer. is inserted, a spring is arranged between the nozzle and the spring holder, the spring makes the valve part of the nozzle come into contact with the valve seat of the pedestal, and a weight valve is arranged at the tip of the nozzle. .

In the case of the conventional example, a passage is provided in the spring retainer, and the valve part that functions as a safety valve and the valve seat communicate with the passage through the spring mounting part, so that the valve part that functions as a safety valve opens. Internal pressure then escapes through the spring portion and into the passage. As a result, the spring comes into direct contact with cooking steam, which accelerates its deterioration and impedes the safety valve function. Furthermore, since the nozzle is only held against the spring retainer via the spring, the stability of the nozzle is poor.

Furthermore, since the nozzle simply extends above the pedestal, the upwardly extending portion of the nozzle is susceptible to external force. Therefore, if a cooking utensil accidentally hits the upper extension of the nozzle during cooking, the nozzle will move and open its valve momentarily, reducing the pressure inside the main unit and impairing its function as a pressure cooker. cormorant.

[Problems of the present invention and its technical means]

The present invention is intended to solve the above-mentioned problems of the prior art, and the present invention is to attach a pedestal having a passage to the upper side of the lid body, and to attach a spring retainer extending upward to the pedestal. Technological measures are used in which a fixed, spring-loaded nozzle is movable up and down in a spring holder, and a weight valve is placed in the upper tip opening of the nozzle.

[Operations and effects of the present invention]

The weight valve has a pressure receiving surface determined by the diameter of the central hole of the nozzle, but when the pressure acting on this pressure receiving surface slightly exceeds a predetermined value, the weight valve floats up.
The pressure inside the container is released to the atmosphere and the pressure inside the container is maintained at a predetermined value. When the pressure inside the container greatly exceeds a predetermined value, the nozzle moves upward against the force of the spring, communicates the valve part with the outlet of the pedestal, releases the pressure, and reduces the pressure inside the container. to keep it at a predetermined value.

In this proposal, the spring retainer extends upward;
Since it is shaped to almost surround the nozzle, there is no tilting of the nozzle, and there is no inadvertent drop in pressure within the container.

[Embodiment]

(a) Provide multiple grooves on the outer circumferential surface of the nozzle tip. When the sliding surface between the nozzle and the spring presser is clogged with broth and the nozzle cannot be moved up and down smoothly, the nozzle is forcibly raised and lowered to remove the clogged broth through the concave groove.

(b) The tip of the nozzle is always located slightly below the opening surface of the upper end of the spring holder, and the weight valve is placed on the openings at both ends of the nozzle and the spring holder. This allows the weight valve to be held in a stable manner.

〔Example〕

The pressure regulator 1 has a pedestal 3 having an outlet 2 that is open to the atmosphere, and the pedestal 3 is connected to the lid 6 of the pressure cooker by a nut 5 with a filter 4 such as a slit.
is fixed at the top of the A spring retainer 7 extending upward is screwed onto the upper part of the pedestal 3, a hollow nozzle 8 is positioned inside the spring retainer 7 and the pedestal 3, and the inner step of the spring retainer 7 and the nozzle 8 are connected to each other. A spring 9 is disposed between the stepped portion and the stepped portion. The biasing force of the spring 9 biases the nozzle 8 downward and brings the valve portion 10 of the nozzle 8 into contact with the valve seat 11 of the pedestal 3.

A groove 12 is provided on the lower outer periphery of the nozzle 8, and a valve seat 11 is provided.
When the valve part 10 is opened, the inside of the pressure cooker communicates with the atmosphere through the groove 12, the hollow part 13, and the outlet 2, which prevents the internal pressure from increasing more than necessary and functions as a safety valve. .

The lower part of the central hole of the nozzle 8 is open to the inside of the container, and the upper part thereof extends slightly above the upper end of the spring presser 7. A normally closed weight valve 14 is placed above the center hole of the nozzle 8. When the pressure inside the container rises slightly above a predetermined value, the weight valve 14 receives internal pressure through the central hole of the nozzle 8 and rises, releases the internal pressure to the outside, and regulates the internal pressure to maintain the predetermined value. fulfill a function.

A spring 15 for preventing the weight valve from coming off is arranged between the weight valve 14 and the spring presser 7. This spring 1
5 does not cause any hindrance to the movement of the nozzle 8,
To prevent the weight valve 14 from being accidentally removed.

In the example shown in FIG. 2, the valve part 10 of the nozzle 8 and the valve seat 11 of the pedestal 3 are improved. The annular collar 16 is used as a valve part, and the pressure receiving surface that moves the nozzle 8 upward is the surface whose diameter is the contact point between the valve part and the valve seat minus the surface of the hollow part 19 of the nozzle 8. becomes. As shown in FIG. 2, the tip opening of the nozzle 8 is located slightly below the upper end of the spring presser 7, and the conical pressure receiving portion of the weight valve 14 is placed on both upper end surfaces of the nozzle 8 and the spring presser 7. It may also be placed on.

As shown in FIGS. 1 and 2, a plurality of grooves 18 are provided on the outer peripheral surface of the upper end of the nozzle 8. As shown in FIGS. This groove 18 moves the nozzle 8 up and down against the biasing force of the spring 9, thereby removing clogging of the boiling liquid on the sliding surface between the nozzle and the spring presser.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of one example of this invention, and FIG. 2 is a sectional view showing another example. In the diagram: 3... pedestal, 5... nut, 6... lid,
7... Spring presser, 8... Nozzle, 9...
Spring, 10... Valve part, 11... Valve seat, 14
...Weight valve.

Claims (1)

[Scope of utility model registration request] A hollow pedestal fixed to the lid of the pressure cooker with a nut and having an outlet opened to the atmosphere, and a valve part inserted into the hollow part of the pedestal and capable of abutting against a valve seat of the pedestal. a hollow nozzle having a hollow nozzle; a spring presser that is held on the pedestal and substantially surrounds a portion of the nozzle that extends upward from the pedestal; one end abutting the spring presser and the other end holding the nozzle; and a weight valve disposed at the tip opening of the nozzle, the upper end of the spring retainer extending to the upper end of the nozzle, and a sliding surface between the nozzle and the spring retainer. A pressure regulating device for a pressure cooker, characterized in that a concave groove for removing clogging is provided on the outer peripheral surface of the nozzle.