CN2130463Y - Automatic negative pressure releasing device for pressure cooker - Google Patents
Automatic negative pressure releasing device for pressure cooker Download PDFInfo
- Publication number
- CN2130463Y CN2130463Y CN 92228627 CN92228627U CN2130463Y CN 2130463 Y CN2130463 Y CN 2130463Y CN 92228627 CN92228627 CN 92228627 CN 92228627 U CN92228627 U CN 92228627U CN 2130463 Y CN2130463 Y CN 2130463Y
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- CN
- China
- Prior art keywords
- cooker
- pressure
- piston
- negative pressure
- air duct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides an automatic negative pressure releasing device for a pressure cooker, which is additionally provided with a transversal inlet passage and is matched with a piston and a piston guard slice on the basis of the original fusible slice safety valve. When the pressure in the cooker is higher than the normal atmospheric pressure, the piston is in a closing state. When the pressure in the cooker is lower than the normal atmospheric pressure, the piston is in an opening state and the gas outside the cooker is replenished in the cooker in time to eliminate the negative pressure in the cooker. As a result, the utility model solves the deformed problem of a sealing rubber ring fundamentally and prolongs the service life by about ten times. The device which has the twofold functions of releasing the negative pressure and fusible security, has the advantages of simple structure and easy manufacture.
Description
The utility model relates to a kind of family life articles for use, and especially a kind of life removes negative pressure device automatically with pressure cooker.
Life at present is with pressure cooker because than ordinary pan good airproof performance, the high pressure of generation make pot interior food ripely get soon, soon rotten, shortened the time of boiling greatly, thereby be subjected to people's welcome deeply.But this pot is to adopt seal with elastometic washer, when the pressure cooker heat food, because the sealing function of pressure limiting valve and cushion rubber, pressure in the pot is malleation greater than the atmospheric pressure of outside, when stopping heating, the pot temperature descends, pressure in the pot gradually less than the atmospheric pressure of outside, at this moment is negative pressure in the pot again, and experiment shows, in this state, between pot cover and the pot body O-ring seal is produced a huge compressing power, and cause the O-ring seal distortion, follow the string and leak vapour, need often to change to bring inconvenience.Therefore, the shape of O-ring seal has appearred on the market recovering with the tension force steel ring, and be clipped in vertically the add some points leak-proof measure etc. of pressurization of pot cover edge with leakproof vapour, but these methods all are the passive ways of afterwards remedying, and fundamentally eliminate the principal element that causes the O-ring seal distortion to leak vapour.
The purpose of this utility model just provides a kind ofly can eliminate the negative pressure that occurs in the pressure cooker, and the pressure cooker that reaches protection and prolong O-ring seal service life removes negative pressure device automatically.
The utility model is achieved in that the former fuse sheet safety valve that is equipped with on the pot cover of pressure cooker; on the air duct of safety valve, set up a unidirectional vent piston; when pot internal gas pressure during greater than normal atmosphere (An); piston is closed state; when pot internal gas pressure during less than atmospheric pressure, piston is opening state, and the outer gas of pot in time replenishes in the pot; negative pressure is eliminated, thereby reached protection and prolong the O-ring seal purpose in service life.
Elaborate below in conjunction with accompanying drawing.
Fig. 1 is the utility model structure cut-away view.
Fig. 2 is the another kind of structural representation of the utility model.
As Fig. 1, the utility model is on the basis of original fuse sheet for pressure cooker safety valve, original valve body nut (1), air duct (9) and fuse sheet (7), fuse sheet bolt (6) etc. have promptly been kept, establish at air duct (9) side on fuse sheet (7) top that imperial palace is trumpet-shaped horizontal inlet channel (5) for a short time outside one, and be furnished with the piston washer (3) and vertical being connected as a single entity of packing ring that is enclosed within valve body (8) recess screw rod position that a trumpet-shaped rubber piston (4) is stuck in the passway, piston washer (3) blocks the passway, in order to prevent that piston from falling.The lower end of central passage (9) is fixed fuse sheet (7) by fuse sheet bolt (6), and nut (1) is fixed on valve body (8) on the pot cover (2) of pressure cooker.
This pressure cooker removes negative pressure device automatically also can have another kind of structure.See Fig. 2, the original valve body of promptly same reservation, air duct etc., also be to establish a horizontal inlet channel (5) at the side of air duct (9), just valve body (8) is thin slightly, tightly put a glue bowl (10) in inlet channel mouth outside, utilize tightening up of glue bowl to be used for reaching sealing, open effect.
The utility model has increased again and has removed negative pressure automatically partly owing to kept the fuse sheet structure of former fuse sheet for pressure cooker safety valve, so make this device have safely and remove the dual-use function of negative pressure simultaneously.If do not utilize former safety valve, the valve body that air duct is arranged that in pot cover, is interlinked to the outside to establish one the piston of gas unidirectional circulation also can.Again owing to automatically remove the problem that pressure device has fundamentally solved the O-ring seal distortion, so it makes and has prolonged several times even tens times in service life of O-ring seal.And simple in structure, make easily.
Claims (3)
1, a kind of pressure cooker removes negative pressure device automatically, promptly by the valve body (8) of fuse sheet safety valve, air duct (9), nut (1), and fuse sheet (7), fuse sheet bolt (6) etc. form, it is characterized in that: establish at the side of the air duct (9) on fuse sheet (7) top that imperial palace is trumpet-shaped horizontal inlet channel (5) for a short time outside one, join a trumpet-shaped rubber piston (4), be stuck in the piston washer (3) and vertical being connected as a single entity of packing ring that is enclosed within valve body recess screw rod position of passway.
2, pressure cooker as claimed in claim 1 removes negative pressure device automatically, it is characterized in that another kind of structure can be arranged: establish a horizontal inlet channel (5) at the side of air duct (9), outside, passway tight cover one glue bowl (10).
3, pressure cooker as claimed in claim 1 removes negative pressure device automatically, it is characterized in that: the valve body that air duct is arranged that is interlinked to the outside in pot establishes one can only make the piston of gas unidirectional circulation also can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92228627 CN2130463Y (en) | 1992-07-21 | 1992-07-21 | Automatic negative pressure releasing device for pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92228627 CN2130463Y (en) | 1992-07-21 | 1992-07-21 | Automatic negative pressure releasing device for pressure cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2130463Y true CN2130463Y (en) | 1993-04-28 |
Family
ID=33772223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92228627 Expired - Fee Related CN2130463Y (en) | 1992-07-21 | 1992-07-21 | Automatic negative pressure releasing device for pressure cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2130463Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117419578A (en) * | 2023-12-18 | 2024-01-19 | 厦门英格瑞思科技有限公司 | Furnace waste heat recovery device for crystal optical fiber capillary production |
-
1992
- 1992-07-21 CN CN 92228627 patent/CN2130463Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117419578A (en) * | 2023-12-18 | 2024-01-19 | 厦门英格瑞思科技有限公司 | Furnace waste heat recovery device for crystal optical fiber capillary production |
| CN117419578B (en) * | 2023-12-18 | 2024-03-08 | 厦门英格瑞思科技有限公司 | Furnace waste heat recovery device for crystal optical fiber capillary production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |