CN2349943Y - Overpressure automatically slowly opening type pressure cooker - Google Patents

Abstract

The utility model relates to an overpressure automatically slowly opening type pressure cooker, composed of a cooker body and a composite type cooker cover. Inner steps are arranged on the upper part of the cooker body. A sealing ring is arranged on the inner steps. The composite type cooker cover comprises an inner cover and a fastening ring. An inner cover is sheathed in the fastening ring. A group of butterfly-shaped springs is arranged between the inner cover and the fastening ring. An air hole is arranged on the fastening ring. The outer edge of the fastening ring is engaged with the outer edge of the cooker body. The sealing ring is pressed by the inner cover. In the condition that an air discharge valve and a safety valve are blocked and are not acted, safe and automatic pressure relief can still be implemented.

Description

The slow automatically open type pressure cooker of a kind of superpressure

The utility model relates to a kind of family expenses pressure cooker.

Original family has pressure cooker to be subjected to the restriction and the limitation of its structure, under improper service condition-boil not only thick but also sticking or during granule food as long-time big firepower, the all blocked inefficacies simultaneously and cause blast of its vent valve and safety valve, or fry in shallow oil the big food of monoblock (as large flat bread etc.) with pressure cooker, monoblock food pressurized rises and causes the pot cover top, and easily safety valve, vent valve are stopped up, cause blast.Above-mentioned all situations make user's safety be subjected to very big threat, when serious, cause damage for people's life and property.

The purpose of this utility model aims to provide a kind of under vent valve, the blocked inoperative situation of safety valve, still can the slow automatically open type pressure cooker of safe self-relieving superpressure.

The purpose of this utility model realizes by following manner:

The utility model comprises a pot body, compound pot cover, pot body top is provided with interior step, interior step is provided with sealing ring, compound pot cover comprises inner cap, clamp ring, inner cap is set in the clamp ring, is provided with one group of butterfly spring between the two, and clamp ring is provided with pore, clamp ring outer rim and the external edge engagement of pot, inner cap is pushed down sealing ring.

The utility model in use, when all external venting channels, after comprising that vent valve, safety valve are blocked, when pressure rises to certain value, but pot cover automatic slowly under pressure promotes is opened, and releasing pressure automatically, and make the pressure in the pot guarantee all the time in safety pressure scope, to guarantee that the serviceability of pressure cooker is perfectly safe reliably.Thereby strengthened the security performance of pressure cooker, avoided people's life, property to suffer a loss.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Accompanying drawing 1 is a structural representation under the normal operating condition of the present utility model;

When accompanying drawing 2 is subjected to surpass normal pressure for the utility model, the structural representation that inner cap rises.

Shown in accompanying drawing 1,2, the utility model comprises a compound pot cover 1 and a pot body 2, and its top is provided with the interior step 4 that is used to set sealing ring 3.Compound pot cover 1 comprises inner cap 5, clamp ring 6, and inner cap 5 is set in clamp ring 6 centers, is provided with one group of butterfly spring 7 between inner cap 5 and the clamp ring 6, and with pressure ring and rivet they is linked to be an integral body.The periphery of clamp ring 6 is provided with several pores 8.Clamp ring 6 outer rims are hung pawl and the engagement of pot body 2 outer rims.The annular edge of inner cap 5 lower surfaces is pushed down the sealing ring 3 on the interior step 4 that is embedded in pot body 2, and has the initial sealing performance.More be close to the plane and the inner cylinder face of contact with it when pressure rising U RunddichtringO pressurized and realize the self-tightening sealing effect.

Under normal operating position, after a pot cover and a pot body closed and being rotated in place, the pot cover outer rim is hung pawl the two is fused, by the pressure limiting valve level pressure, and the vent valve exhaust.After if vent valve etc. are blocked, interior pressure rises to certain value (by the decision of butterfly spring 7 pretightning forces) gradually, and inner cap 5 pressurizeds cause inner cap 5 to rise butterfly spring 7 recompressions.At this moment the annular edge of inner cap 5 lower surfaces and U RunddichtringO upper surface produce gap e.Internal pressure gas is discharged by the some pores on clamp ring 6 peripheries 8 along this gap, and decompression automatically.If this gap is too narrow and blocked, then interior pressure will continue to rise, and cause inner cap 5 to rise simultaneously, and gap e increases, and lowers until interior pressure, and gap e reduces automatically.Pressure guarantees in the safe pressure scope all the time in making.

Claims (1)

1. The slow automatically open type pressure cooker of a kind of superpressure, comprise a pot body (2), it is characterized in that also comprising compound pot cover (1), pot body (2) top is provided with interior step (4), interior step (4) is provided with sealing ring (3), compound pot cover (1) comprises inner cap (5), clamp ring (6), inner cap (5) is set in the clamp ring (6), be provided with one group of butterfly spring (7) between the two, clamp ring (6) is provided with pore (8), clamp ring (6) outer rim and the engagement of pot body (2) outer rim, inner cap (5) is pushed down sealing ring (3).

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