CN102078137B - Improved pressure relief valve for pressure cooker - Google Patents
Improved pressure relief valve for pressure cooker Download PDFInfo
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- CN102078137B CN102078137B CN201010567748A CN201010567748A CN102078137B CN 102078137 B CN102078137 B CN 102078137B CN 201010567748 A CN201010567748 A CN 201010567748A CN 201010567748 A CN201010567748 A CN 201010567748A CN 102078137 B CN102078137 B CN 102078137B
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Abstract
The invention provides an improved pressure relief valve for a pressure cooker, belongs to the technical field of kitchenware, and solves the problems of short service life and low safety in the conventional pressure relief valve. The improved pressure relief valve for the pressure cooker comprises a valve body and a valve cover in threaded connection; an air inlet hole which is communicated with the internal of the cooker is reserved on the valve body; an exhaust hole is reserved on the valve cover; a seal piece made of an elastic material is fixedly arranged between the valve cover and the valve body; a through hole is reserved in the centre of the seal piece; a valve core which can seal the through hole is arranged on the seal piece; after the through hole on the seal piece is sealed by the valve core, the pressure relief valve is divided into a pressure bearing cavity communicated with the air inlet hole and a pressure relief cavity communicated with the exhaust hole; and when the pressure in the pressure bearing cavity is overhigh, the valve core can separate from the seal piece so that the pressure bearing cavity is communicated with the pressure relief cavity. The valve body and the valve cover of the improved pressure relief valve for the pressure cooker are made of metal material; the service life is long; a pressure relief action of the improved pressure relief valve is finished by using the seal piece made of the elastic material; therefore, the use safety is high.
Description
Technical field
The invention belongs to the kitchen utensils technical field, relate to a kind of pressure cooker accessory, the relief valve on particularly a kind of pressure cooker.
Background technology
On the existing pressure cooker cover, except that the safety valve by the gravity pressure limiting is equipped with at the center, be the inefficacy that is blocked of the safety valve at the center of preventing; Generally also be provided with an auxiliary relief valve on the pot cover; When the force value in the pot exceeded safety value, relief valve was opened, and pressure cooker is carried out pressure release.
Its valve body spool of the relief valve of installing on traditional pressure cooker adopts metal material to process; Because auxiliary pressure relief valve only plays safety effect; Therefore can not open in most times, this relief valve that just causes metal material to be processed does not use the back that corrosion takes place for a long time, when pot inner pressure is excessive owing to the relief valve corrosion does not have good pressure release effect; Even the relief valve inefficacy, bring serious potential safety hazard.
To above-mentioned situation; Those skilled in the art have carried out certain improvement, like a kind of pressure cooker relief valve that Chinese patent (Granted publication CN2738684Y) proposes, comprise valve body and interior spool of phase with center through hole; Described valve body adopts elastomeric material to process; Its periphery is provided with the cannelure that matches with pot cover thickness, and is entrenched in the installing hole on the pot cover, and the size of described valve body center through hole and said spool middle part adapt; And the top of said spool and bottom are all greater than the center through hole of said valve body; Said spool up has steam vent from the bottom, and said spool move to its bottom press close under the state of said valve body, said steam vent is higher than the top of said valve body.When pressure in the pot cover surpassed limit value, spool was communicated the steam vent and the external world by automatic jack-up, reaches the function of pressure release.
Above-mentioned patent adopts elastomeric material to process whole valve body; Cost is lower, and can not get rusty, but because whole valve body all adopts elastomeric material to form; The stressed back deformation of elastomeric material is big; When the pressure cooker internal pressure constantly changes, although do not need pressure release can produce deformation yet, long-term deformation and reset and cause its service life shorter.And the valve body long term exposure be prone to take place aging in air, and stability in use is not high, and causing easily can not pressure release, just opens automatically when perhaps pressure reaches safety value.The valve body processed of elastomeric material is installed on the pot cover that metal material processes and also not too coordinates on its color in addition, influences the aesthetic property of pot cover.
Summary of the invention
The objective of the invention is to have the problems referred to above to existing technology, proposed a kind of simple in structure, long service life pressure cooker relief valve.
The object of the invention can be realized through following technical proposal: a kind of pressure cooker relief valve of improvement; Comprise be threaded valve body and valve gap together; Have on the described valve body can with the air admission hole that communicates in the pot; Have steam vent on the described valve gap, it is characterized in that, be installed with the seal that elastomeric material is processed between described valve gap and the valve body; Described seal middle part offers through hole; Described seal is provided with can be with the spool of through hole sealing, and described spool is divided into pressure pocket that communicates with air admission hole and the pressure-releasing chamber that communicates with steam vent with the sealing of the through hole on seal back relief valve, and described spool can break away from seal pressure pocket is communicated with pressure-releasing chamber when the pressure pocket internal pressure is excessive.
The pressure cooker pressure-relief valve structure principle of this improvement is following: valve body is threaded with valve gap, and valve interior wall has a convex edge, and seal is positioned on this convex edge; The end of valve gap was fixed in seal between valve gap and the valve body when valve gap was connected with valve body, pot inner pressure just often, the through hole that spool is resisted against seal is with this through hole sealing; When pot inner pressure surpasses the safe pressure value of a setting; The seal that elastomeric material is processed will deform under pressure, and the through hole on the seal also deforms, and make spool break away from seal; Through hole on the seal is communicated with pressure pocket and pressure-releasing chamber at this moment; The through hole of gases at high pressure in the pot from air admission hole along seal gets into valve gap, and the steam vent from valve gap discharges, to reach the purpose of pressure release.
Valve body and valve gap adopt metal material to process, and are installed on the pot cover and comparatively coordinate, and seal adopts elastomeric material to process, and can select the material and the thickness of seal according to the safe pressure size, satisfy the required different safe pressure values of different pot covers.
In the pressure cooker relief valve of above-mentioned improvement, described spool is shaft-like, and an end of spool stretches out valve gap; The other end has the forced section of external diameter greater than the seal through hole; Described forced section passes the through hole of seal, is provided with spring in the described valve body, and an end of said spring is resisted against on the boss of valve interior wall setting; The other end is resisted against on the forced section, and described forced section can be resisted against the through hole sealing that makes seal on the seal under the effect of spring.
The external diameter of forced section is greater than the through hole of seal, thereby after spool passed seal, under the effect of spring, the back side of forced section can be resisted against on the seal all the time, with the through hole sealing, prevents pressure cooker gas leakage; When pot inner pressure surpasses safety value, the seal distortion, forced section is with moving on the seal, until the through hole of seal be deformed into make forced section break away from through hole after, pressure cooker begins pressure release.Spool is positioned at the upper end of seal all the time in the pressure leak process, promptly in the pressure-releasing chamber, to guarantee that spool can not closed through hole in the relief valve pressure leak process, when pressure release finishes, need manually push spool, and the through hole that forced section is passed on the seal also seals through hole again.
In the pressure cooker relief valve of above-mentioned improvement, described spool stretches out valve gap one end and is provided with a bonnet.This bonnet adopts plastic material to process, and has both made things convenient for the user manually to push valve core reset, can increase the aesthetic property of this relief valve again.
As another kind of scheme, in the pressure cooker relief valve of above-mentioned improvement, described spool is shaft-like; One end of spool stretches out valve gap; The other end has the forced section of external diameter greater than the seal through hole, and described forced section passes the through hole of seal, and described spool is positioned at the valve gap outside one end and is provided with a bonnet; Be provided with a spring between described valve gap and the bonnet, and can described forced section under the effect of spring can be resisted against on the seal through hole sealing seal.
On valve gap, has the hole that supplies spool to pass; The end of valve gap is provided with bonnet; And between bonnet and valve gap, be reserved with certain space, spring be set between valve gap and bonnet make spool have active force upwards all the time, thereby guaranteeing that forced section can be resisted against on the seal seals through hole.
In the pressure cooker relief valve of above-mentioned improvement, described spring is the turriform spring.The turriform spring has the stable advantage in axle center, and is not yielding under pressure, long service life.
In the pressure cooker relief valve of above-mentioned improvement, described forced section end has a guiding surface.When pressure release is accomplished; The force part must manually be pressed into valve body one side with forced section and could therefore valve core reset be provided with the lead inclined-plane in the end of forced section in valve gap one side; Comparatively convenient when making forced section pass seal, prevent that also spool from causing damage to seal simultaneously.
In the pressure cooker relief valve of above-mentioned improvement, described seal adopts silica gel to process.Water insoluble and any solvent of silica gel (Silicon dioxide); Nonpoisonous and tasteless, chemical property is stable, except that highly basic, hydrofluoric acid, does not react with any material; And have Heat stability is good, stable, the mechanical strength advantages of higher of chemical property, satisfy the performance requirement of this seal.
In the pressure cooker relief valve of above-mentioned improvement, have two steam vents on the described valve gap.A plurality of steam vents can be set on the valve gap carry out pressure release,, two steam vents are set on this valve gap, lay respectively at the both sides of valve gap for easy to process.
In the pressure cooker relief valve of above-mentioned improvement, the described valve body outside is arranged with and is used for the nut that is connected with pot cover.Pot cover is provided with the Connection Block that is connected with valve body, and valve body is pegged graft into behind the Connection Block, through nut valve body is fixed on the pot cover.
In the pressure cooker relief valve of above-mentioned improvement, the described valve body outside also is provided with a cannelure, is provided with sealing ring in the described cannelure.For guaranteeing that valve body is installed on the sealing of pot cover, at valve body arranged outside sealing circle, when valve body was installed on the pot cover, sealing ring was between valve body and pot cover.
Compared with prior art, the valve body of the pressure cooker relief valve of this improvement and valve gap adopt metal material to process long service life; The element of its induction pressure pocket internal pressure is a seal; Its pressure release action also leans on seal to accomplish, thereby can not influence and the unlatching of spool because of getting rusty of valve body or valve gap, and valve body and valve gap that metal material is processed have guaranteed that this relief valve is connected in aesthetic property and the stability in use on the pot cover; Spool breaks away from seal during pressure release; Must manually push just and can make it valve core reset, guarantee can continue pressure release in the pressure leak process, safe.
Description of drawings
Fig. 1 is the sectional structure sketch map of the pressure cooker relief valve of this improvement;
Fig. 2 is the structural representation that the pressure cooker relief valve of this improvement is in the pressure release state.
Among the figure, 1, valve body; 11, air admission hole; 12, convex edge; 13, boss; 14, cannelure; 1a, pressure pocket; 1b, pressure-releasing chamber; 2, valve gap; 21, steam vent; 3, seal; 31, through hole; 4, spool; 41, forced section; 41a, guiding surface; 5, spring; 6, bonnet; 7, nut; 8, sealing ring.
The specific embodiment
Below be specific embodiment of the present invention and combine accompanying drawing, technical scheme of the present invention is done further to describe, but the present invention is not limited to these embodiment.
The pressure cooker relief valve of this improvement is installed on the pot cover, generally is installed on the center of departing from of pot cover, and when the safety valve at pot cover center broke down, pot inner pressure sharply rose to when surpassing a certain safety value and just starts, and pressure cooker is carried out pressure release.
As depicted in figs. 1 and 2; The pressure cooker relief valve of this improvement comprises be threaded together valve body 1 and valve gap 2, have on the valve body 1 can with the air admission hole 11 that communicates in the pot, have steam vent 21 on the valve gap 2; Valve body 1 inwall has a convex edge 12; Be installed with the seal 3 that elastomeric material is processed between valve gap 2 ends and the convex edge 12, seal 3 middle parts offer through hole 31, and seal 3 is provided with can be with the spool 4 of through hole 31 sealings; When spool 4 sealed the through hole on the seal 3 31, spool 4 was divided into pressure pocket 1a that communicates with air admission hole 11 and the pressure-releasing chamber 1b that communicates with steam vent 21 with seal 3 with relief valve.When pot inner pressure surpasses a setting value; The seal 3 that elastomeric material is processed will deform under pressure, and the through hole 31 on the seal 3 also deforms, and make spool 4 break away from seal 3; Through hole 31 on the seal 3 is communicated with pressure pocket 1a and pressure-releasing chamber 1b at this moment; Gases at high pressure in the pot 31 get into valve gaps 2 from air admission hole 11 along through hole, and the steam vent 21 from valve gap 2 discharges, to reach the purpose of pressure release.
Spool 4 is shaft-like, and an end of spool 4 stretches out valve gap 2, and the other end has the forced section 41 of external diameter greater than through hole 31; The through hole 31 that forced section 41 passes seal 3 is positioned at pressure pocket 1a; Be provided with spring 5 in the valve body 1, an end of spring 5 is resisted against on the boss 13 of valve body 1 inwall setting, and the other end is resisted against the end of forced section 41; Forced section 41 can be resisted against through hole 31 sealings that make seal 3 on the seal 3 under the effect of spring 5, prevent pressure cooker gas leakage when normal the use.When pot inner pressure surpasses safety value, seal 3 distortion, forced section 41 is with moving on the seal 3, until the through hole 31 of seal 3 be deformed into make forced section 41 break away from through holes 31 after, pressure cooker begins pressure release.Be positioned at pressure-releasing chamber 1b after forced section 41 breaks away from seal 3, prevent that forced section 41 from sealing through hole 31 once more, when pressure release finishes, need manually push spool 4, the through hole 31 that forced section 41 is passed on the seal 3 comes back in the pressure pocket 1a, and is resisted against on the spring 5.Spool 4 stretches out valve gap 2 one ends and is provided with a bonnet 6, and bonnet 6 is threaded with spool 4, and this bonnet 6 adopts plastic material to process, and has both made things convenient for the user manually to push spool 4 is resetted, and can increase the aesthetic property of this relief valve again.
Forced section 41 ends have a guiding surface 41a; When pressure release is accomplished; Forced section 41 is positioned at pressure-releasing chamber 1b, and must manually forced section 41 be pressed into valve body 1 one sides could reset spool 4, therefore in the end of forced section 41 guiding surface 41a is set; Make forced section 41 can pass the through hole 31 of seal 3 smoothly, prevent that also 4 pairs of seals 3 of spool from causing damage simultaneously.Above-mentioned spring 5 is the turriform spring, and the turriform spring has the stable advantage in axle center, and is not yielding under pressure, long service life.
A plurality of steam vents 21 can be set on the valve gap 2 carry out pressure release,, two steam vents 21 are set on this valve gap 2, lay respectively at the both sides of valve gap 2 for easy to process.Valve body 1 outside also is arranged with and is used for the nut 7 that is connected with pot cover, cooperates the Connection Block that is provided with on the pot cover.After Connection Block is advanced in valve body 1 grafting, valve body 1 is fixed on the pot cover through nut 7.For guaranteeing that valve body 1 is installed on the sealing of pot cover, also be provided with a cannelure 14 in valve body 1 outside, and be arranged with sealing ring 8 in cannelure 14 outsides, after the installation, sealing ring 8 is between valve body 1 and pot cover.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as valve body 1, air admission hole 11, convex edge 12, boss 13, cannelure 14, pressure pocket 1a, pressure-releasing chamber 1b, valve gap 2, steam vent 21, seal 3, through hole 31, spool 4, forced section 41, guiding surface 41a, spring 5, bonnet 6, nut 7, sealing ring 8 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.
Claims (10)
1. the pressure cooker relief valve of an improvement; Comprise be threaded valve body (1) and valve gap (2) together, have on the described valve body (1) can with the air admission hole (11) that communicates in the pot, have steam vent (21) on the described valve gap (2); It is characterized in that; Be installed with the seal (3) that elastomeric material is processed between described valve gap (2) and the valve body (1), described seal (3) middle part offers through hole (31), and described seal (3) is provided with can be with the spool (4) of through hole (31) sealing; Described spool (4) is shaft-like; One end of spool (4) stretches out valve gap (2), and the other end has the forced section (41) of external diameter greater than through hole (31), and described forced section (41) passes through hole (31); Described spool (4) is divided into pressure pocket (1a) that communicates with air admission hole (11) and the pressure-releasing chamber (1b) that communicates with steam vent (21) with through hole (31) sealing back relief valve, and when pressure pocket (1a) when internal pressure is excessive described spool (4) can break away from seal (3) pressure pocket (1a) is communicated with pressure-releasing chamber (1b).
2. the pressure cooker relief valve of improvement according to claim 1; It is characterized in that; Be provided with spring (5) in the described valve body (1); One end of said spring (5) is resisted against on the boss (13) that valve body (1) inwall is provided with, and the other end is resisted against on the forced section (41), and described forced section (41) makes through hole (31) seal being resisted against the effect of spring (5) under on the seal (3).
3. the pressure cooker relief valve of improvement according to claim 2 is characterized in that, described spool (4) stretches out valve gap (2) one ends and is provided with a bonnet (6).
4. the pressure cooker relief valve of improvement according to claim 1; It is characterized in that; Described spool (4) is positioned at valve gap (2) outside one end and is provided with a bonnet (6); Be provided with a spring (5) between described valve gap (2) and the bonnet (6), and under the effect of spring (5), make described forced section (41) can be resisted against seal (3) to go up through hole (31) is sealed.
5. according to the pressure cooker relief valve of claim 2 or 3 or 4 described improvement, it is characterized in that described spring (5) is the turriform spring.
6. according to the pressure cooker relief valve of claim 2 or 3 or 4 described improvement, it is characterized in that described forced section (41) end has a guiding surface (41a).
7. according to the pressure cooker relief valve of claim 1 or 2 or 3 or 4 described improvement, it is characterized in that described seal (3) adopts silica gel to process.
8. according to the pressure cooker relief valve of claim 1 or 2 or 3 or 4 described improvement, it is characterized in that having two steam vents (21) on the described valve gap (2).
9. according to the pressure cooker relief valve of claim 1 or 2 or 3 or 4 described improvement, it is characterized in that described valve body (1) outside is arranged with and is used for the nut (7) that is connected with pot cover.
10. according to the pressure cooker relief valve of claim 1 or 2 or 3 or 4 described improvement, it is characterized in that described valve body (1) outside also is provided with a cannelure (14), is provided with sealing ring (8) in the described cannelure (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010567748A CN102078137B (en) | 2010-11-30 | 2010-11-30 | Improved pressure relief valve for pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010567748A CN102078137B (en) | 2010-11-30 | 2010-11-30 | Improved pressure relief valve for pressure cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102078137A CN102078137A (en) | 2011-06-01 |
| CN102078137B true CN102078137B (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010567748A Expired - Fee Related CN102078137B (en) | 2010-11-30 | 2010-11-30 | Improved pressure relief valve for pressure cooker |
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| CN (1) | CN102078137B (en) |
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| CN107970122B (en) * | 2017-12-31 | 2020-11-10 | 安徽贺林中药饮片科技有限公司 | Steam-pressurizing type bottom-sticking-preventing medicine decocting device |
| CN110115479B (en) * | 2018-02-06 | 2021-11-23 | 广东美的生活电器制造有限公司 | Pressure relief assembly and food processor |
| CN108394986A (en) * | 2018-04-04 | 2018-08-14 | 佛山市熙华科技有限公司 | A kind of intermittent air-jet device |
| CN112167971B (en) * | 2019-11-15 | 2024-06-07 | 九阳股份有限公司 | Pressure cooking utensil |
| CN111481053B (en) * | 2020-04-20 | 2024-08-20 | 台州长骁机械厂 | Multifunctional safety valve |
| CN113142997B (en) * | 2021-04-22 | 2022-04-05 | 淄博银都伟业厨房设备有限公司 | Outdoor pressure cooker and pressure adjusting method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB313860A (en) * | 1927-12-13 | 1929-06-13 | Harold Lyall Mason | Improvements in, and relating to, valves |
| GB502224A (en) * | 1937-09-08 | 1939-03-14 | Knorr Bremse Ag | Improvements in or relating to high-lift safety valves for steam boilers |
| EP0008999A1 (en) * | 1978-08-31 | 1980-03-19 | Heinrich Kuhn Metallwarenfabrik Aktiengesellschaft | Valve for a pressure cooker |
| CN2332305Y (en) * | 1998-04-10 | 1999-08-11 | 周赛方 | Safety valve of pressure cooker |
| CN2388901Y (en) * | 1999-09-01 | 2000-07-26 | 宁波松洋燃气具有限公司 | Multi-function regulation valve for pressure cooker |
| CN2754519Y (en) * | 2004-12-31 | 2006-02-01 | 姚宗玉 | Pressure valve of cooker |
| CN201879454U (en) * | 2010-11-30 | 2011-06-29 | 姚宗玉 | Improved pressure relief valve of pressure cooker |
-
2010
- 2010-11-30 CN CN201010567748A patent/CN102078137B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB313860A (en) * | 1927-12-13 | 1929-06-13 | Harold Lyall Mason | Improvements in, and relating to, valves |
| GB502224A (en) * | 1937-09-08 | 1939-03-14 | Knorr Bremse Ag | Improvements in or relating to high-lift safety valves for steam boilers |
| EP0008999A1 (en) * | 1978-08-31 | 1980-03-19 | Heinrich Kuhn Metallwarenfabrik Aktiengesellschaft | Valve for a pressure cooker |
| CN2332305Y (en) * | 1998-04-10 | 1999-08-11 | 周赛方 | Safety valve of pressure cooker |
| CN2388901Y (en) * | 1999-09-01 | 2000-07-26 | 宁波松洋燃气具有限公司 | Multi-function regulation valve for pressure cooker |
| CN2754519Y (en) * | 2004-12-31 | 2006-02-01 | 姚宗玉 | Pressure valve of cooker |
| CN201879454U (en) * | 2010-11-30 | 2011-06-29 | 姚宗玉 | Improved pressure relief valve of pressure cooker |
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| CN102078137A (en) | 2011-06-01 |
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