CN2478497Y

CN2478497Y - Opening or closing overpressure protecting mechanism for pressure cooker

Info

Publication number: CN2478497Y
Application number: CN 01218613
Authority: CN
Inventors: 蔡振耀
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-11
Filing date: 2001-04-11
Publication date: 2002-02-27
Anticipated expiration: 2011-04-11

Abstract

The utility model relates to a safety mechanism for the opening and closing overpressure for a pressure cooker. The connecting positions of an upper handle and a cooker lid are respectively provided with holes which are opposite up and down, and a sealing rubber ring is arranged. The inner diameter of the sealing rubber ring is provided with a lug boss, and the upper handle is provided with a pushing plate. A safety plug passes through an inner hole of the sealing rubber ring and is inserted into the hole of the upper handle. An outer circle of the safety plug is provided with two steps. The utility model has the advantage of good tightness. The cooker lid does not leak water or air. When the pressure in the pressure cooker is boosted, the utility model can ensure that the cooker lid can not be opened, when the pressure exceeds a safe range, the safety mechanism is automatically opened so as to exhaust gas and relieve pressure. Thus, accidents that the pressure cooker explodes or a user is scaled can be avoided.

Description

Pressure cooker open and close superpressure insurance institution

The utility model relates to a kind of folding superpressure insurance institution of pressure cooker.

Existing pressure cooker generally all is equipped with a spring safety valve, and its function is in the pressure cooker use, when pot inner pressure too high, when surpassing the maximum (88Kpa) of operating pressure, the spring in the valve body promptly is compressed, and steam is outside the valve body interstitial row takes the dish out of the pot, reduce pot inner pressure, reach safety effect.But sometimes owing to the spring safety valve of pressure cooker breaks down when losing efficacy, the pressure cooker accident of just blasting easily, or pot cover washed open by HCS, causes the injury to the user.

The purpose of this utility model provides a kind of pressure cooker open and close superpressure insurance institution, to solve the problems such as poor stability that present pressure cooker exists in using, the accident of avoiding that pot body blast takes place or scalding the user.

The purpose of this utility model is achieved through the following technical solutions: pressure cooker open and close superpressure insurance institution is installed in the junction of pot cover and upper handle, in the junction of upper handle and pot cover corresponding hole about in the of is arranged respectively, the O-ring seal of packing between upper handle and the pot cover, the internal diameter of sealing cushion rubber is provided with boss; Be equiped with push pedal on the upper handle, the corresponding endoporus in hole with upper handle, O-ring seal and pot cover is arranged in this push pedal, the endoporus that insurance Xiao passes O-ring seal inserts in the hole of upper handle; Insurance Xiao's cylindrical is provided with first step and second step, and wherein first step is above O-ring seal internal diameter boss, and second step is below O-ring seal internal diameter boss.

Folding superpressure of the present utility model insurance institution links together pot cover and upper handle, when insurance Xiao is risen under the effect of pot inner vapor, compress by the second step plane of insurance Xiao cylindrical and the internal diameter boss of O-ring seal, play sealing function, form an operating pressure in the feasible pot, the insurance Xiao Shangduan of Sheng Qiing blocks seesawing of push pedal simultaneously, and the assurance pot cover can not be opened, and plays the folding safety effect.When the pot inner pressure rising reached certain value above operating pressure, insurance Xiao by powerful jack-up, surpassed sealing plane under the effect of high pressure, and outside steam took the dish out of the pot by the interstitial row between insurance Xiao and the O-ring seal, the removal pot inner pressure played the superpressure safety effect.

The utility model has the advantages that:

1, good seal performance, pot cover is water-tight, and is air tight, and locked push pedal akinesia when boosting in the pot guarantees that pot cover do not open, and avoids the user is caused scald.

2, contingency limiting valve of pressure cooker inefficacy cisco unity malfunction, when an actual pressure reached 120-180Kpa in the pot, folding superpressure insurance institution promptly opened automatically, exhaust release, the accident of unlikely build-up of pressure pot blast.

3, when the superpressure exhaust, steam is upwards in line, even the people nearby can not damage yet.

4, folding superpressure insurance institution superpressure capacity is bigger, if also continuing the heating of pot body when exhaust, the pressure in the pot also can be reduced to below the 20Kpa, even unmanned on the scene making in the pot dryouied, pot inner pressure can not rise yet, and avoids accident to take place.

5, easy for installation, can clean insurance Xiao and O-ring seal at any time, guarantee that air-flow is unimpeded.

Below in conjunction with drawings and Examples structure of the present utility model and using method are described further.

Fig. 1 is the outline drawing behind installing the utility model on the pressure cooker.

Fig. 2 is the structural representation of the utility model folding superpressure insurance institution.

As shown in Figure 1, the utility model folding superpressure insurance institution is loaded on the junction of upper handle 3 with the pot cover 5 of pressure cooker, and the push pedal 2 of folding superpressure insurance institution is installed in the top of upper handle.Fig. 2 shows the structure of folding superpressure insurance institution, junction at upper handle 3 and pot cover 5 has corresponding hole 7 about in the of respectively, O-ring seal 4 is housed between pot cover and upper handle, the internal diameter of sealing cushion rubber is provided with a boss 9, the push pedal 2 of installing on the upper handle has and hole 7 corresponding endoporus 6, the endoporus that insurance Xiao 1 passes fluid sealant figure from the bottom to top inserts in the hole 7 of upper handle 3, hangs down into a pot body in insurance Xiao's lower end; Insurance Xiao's cylindrical is provided with first step 8 and second step 10, and wherein first step 8 is above O-ring seal internal diameter boss 9, and second step 10 is below O-ring seal internal diameter boss 9.

Insurance Xiao 1 is shelved in the O-ring seal 4 when not working, and with contacting of O-ring seal internal diameter boss 9 it can not dropped out by the first step 8 on its cylindrical, and insurance Xiao Shangduan is lower than push pedal 2; Second step 10 on insurance Xiao cylindrical is below O-ring seal internal diameter boss 9, steam during work in the pressure cooker makes insurance Xiao Shangsheng, the plane of second step 10 and O-ring seal internal diameter boss 9 compress (as shown in Figure 2), play sealing function, make and form pressure in the pot.In insurance Xiao Shengqi, insurance Xiao Shangduan extend in the endoporus 6 of push pedal 2, blocks push pedal, makes the push pedal akinesia, promptly can not promote push pedal with hand, and the assurance pot cover can't be opened, and plays the function of folding insurance.When pot inner pressure continues to rise, so that in the time of above operating pressure to a certain degree, Xiao is under the effect of high pressure in insurance, the internal diameter boss 9 of O-ring seal is broken through on the plane of the second step 10 on its cylindrical, the pot inner vapor is discharged outside the pot through the space of insuring between Xiao and the upper handle through the gap between insurance Xiao and the O-ring seal again, the removal pot inner pressure plays the function that step-down is insured.

Insurance Xiao's 1 bottom is provided with bottom outlet 11 in the present embodiment, has groove 12 on the hole wall.When pot inner pressure too high, when the internal diameter boss 9 of O-ring seal is broken through on the plane of insurance Xiao's second step 10, the pot inner vapor can enter O-ring seal 4 by the groove 12 of bottom outlet 11, discharge outside the pot in space between insurance Xiao and upper handle, pot inner pressure is reduced rapidly, avoid taking place the blast of pot body or wash accident such as pot cover open.

Claims

1, a kind of pressure cooker open and close superpressure insurance institution, this mechanism is installed in the junction of pot cover (5) and upper handle (3), it is characterized in that: the junction at upper handle (3) and pot cover (5) has corresponding hole (7) about in the of one respectively, the O-ring seal (4) of packing between upper handle and the pot cover, the internal diameter of sealing cushion rubber is provided with boss (9); Be equiped with push pedal (2) on the upper handle (3), the corresponding endoporus in hole (6) with upper handle, O-ring seal and pot cover is arranged in this push pedal, the endoporus that insurance Xiao (1) passes O-ring seal inserts in the hole (7) of upper handle; Insurance Xiao's cylindrical is provided with first step (8) and second step (10), and wherein first step (8) is in the top of O-ring seal internal diameter boss (9), and second step (10) is in the below of O-ring seal internal diameter boss (9).

2, pressure cooker open and close superpressure according to claim 1 insurance institution is characterized in that: bottom outlet (11) is arranged at described insurance Xiao's (1) bottom, has groove (12) on the hole wall.