CN204991594U - Vapour -pressure type pressure switch - Google Patents
Vapour -pressure type pressure switch Download PDFInfo
- Publication number
- CN204991594U CN204991594U CN201520810254.XU CN201520810254U CN204991594U CN 204991594 U CN204991594 U CN 204991594U CN 201520810254 U CN201520810254 U CN 201520810254U CN 204991594 U CN204991594 U CN 204991594U
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- China
- Prior art keywords
- cavity
- seal gasket
- push rod
- pressure switch
- shell fragment
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- Expired - Fee Related
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Abstract
The utility model relates to an electricity switch technology field discloses a vapour -pressure type pressure switch, including base and airtight cavity, be equipped with the cavity in the base, cavity upper portion is uncovered, cavity lower part and external intercommunication, the sealed lock of uncovered department of cavity has sealed cushion, and sealed cushion top is equipped with the push rod, airtight cavity is connected in the base top, installs the move piece and the quiet shell fragment of contact -carrying in the airtight cavity, and piece and the quiet shell fragment of moving is only at the contact circuit conduction of department, the push rod stretches into and the vertical slip of cavity airtight relatively from airtight cavity below, and sealed cushion produces and drives the push rod when upwards being out of shape and upwards slide and force the contact of the piece of moving to break away from the contact of quiet shell fragment. The utility model discloses simple structure, convenient equipment, the maintenance of being convenient for is changed. Through selecting different sealed cushions, correspond different elastic deformation power, can be arranged in culinary art control, also can be connected to the circuit as safety device, sensed pressure's accuracy is higher.
Description
Technical field
The utility model relates to electric switch technical field, more specifically relates to a kind of Pneumatic pressure switch of pressure cooking appliance.
Background technology
Pressure cooking is that gas and food are cooked at high pressure, and higher than the temperature of under atmospheric pressure cooking, food can become ripe more fast by the gas in heating confined space and food, saves the energy, shortens cooking time.
Pressure cooking can produce pressure high temperature hot gas, therefore needs good safety prevention measure.Such as electric pressure cooker is exactly conventional pressure cooking appliance, and electric pressure cooker is provided with the safety devices such as safety valve, thermostat, pressure switch.
As shown in Figure 1; be the patent No. be 201020136193.0; name is called one of Figure of description of a kind of Chinese utility model patent of pressure switch of electric pressure cooker; which disclose a kind of pressure switch of electric pressure cooker; include the primary structure of pressure switch of the prior art; such as insulator, spring plate, quiet shell fragment, adjusting rod etc.; similar pressure switch is arranged on below outer pot; then drive frizzen to force spring plate action by interior pot bottom distortion, thus play the effect of protection.
But pot bottom just can work after being out of shape in this pressure switch needs, interior pot bottom be made to be out of shape to be needed to produce very large pressure in pot, so this pressure switch can only be used for high voltage protection, is difficult in culinary art control.Simultaneously, pot had not only needed splendid attire food and had been heated but also need can have certain elastic deformation amount bottom it, and therefore this pressure switch is also higher for parameter requests such as the material of interior pot and thickness, brings certain difficulty to manufacturing and designing.In addition, carry out activation pressure switch by interior pot bottom distortion, because interior pot is hard material, therefore accuracy is lower.
Utility model content
The utility model, for overcoming above-mentioned deficiency of the prior art, provides a kind of Pneumatic pressure switch of more optimal pressure cooking appliance.
The utility model is achieved through the following technical solutions above-mentioned purpose.
A kind of Pneumatic pressure switch, comprise base and airtight cavity, be provided with cavity in base, cavity open topped, cavity bottom is in communication with the outside, and the open-mouth sealing fastening of cavity has seal gasket, is provided with push rod above seal gasket; Airtight cavity is connected to above base, is provided with the spring plate of contact-carrying and quiet shell fragment in airtight cavity, and spring plate and quiet shell fragment are only at contact place circuit turn-on, and spring plate is connected to quiet shell fragment the wire be communicated with external circuitry; Push rod stretches into below airtight cavity and airtight cavity vertically slides relatively, drives push rod upward sliding and forces the contact of spring plate to depart from the contact of quiet shell fragment when seal gasket produces upwards distortion.
This programme can be directly installed on the seal cover of pressure cooking receptacle, the cavity of base is communicated with in pot, gases at high pressure are utilized to force seal gasket to produce elastic deformation, seal gasket drives the relative airtight cavity of push rod to slide again, then push rod drives the contact of spring plate to depart from the contact of quiet shell fragment, open circuit.This structure is simple, and ease of assembly, is convenient to maintain and replace.By selecting the seal gasket of different-thickness, material, shape, corresponding different elastic deformation power, this Pneumatic pressure switch may be used for, in culinary art control, to be also connected in circuit as safety device.Unlike interior pot should splendid attire food again as induction pressure original paper, seal gasket does not need splendid attire food, and seal gasket material is softer and have certain elasticity, and therefore seal gasket is as the convenient design and select material of pressure sensitive original paper, as long as select suitably, the accuracy of induction pressure is higher.
As further improvement, being provided with the banking stop for limiting seal gasket upwards deflection above above-mentioned seal gasket, producing excessive deformation to prevent seal gasket and causing spring plate not automatically reset.
As further improvement, the relatively above-mentioned airtight cavity of above-mentioned banking stop vertically slides, above-mentioned push rod lower end is against above banking stop, seal gasket drives banking stop upward sliding when producing upwards distortion, and banking stop drives push rod upward sliding again and forces the contact of spring plate to depart from the contact of quiet shell fragment.When seal gasket recovers reset condition, banking stop and push rod slide down to home position under the elastic force acting in conjunction of self gravitation and spring plate, and the contact conducting again of home position and quiet shell fragment is also got back in the contact of spring plate.
As further improvement, above-mentioned push rod is connected to above above-mentioned seal gasket, the spring for the elastic force providing seal gasket to reset is provided with downwards below above-mentioned airtight cavity, spring one end is against airtight cavity, the spring other end is against push rod or seal gasket, this structure can prevent from seal gasket from producing excessive deformation causing spring plate not automatically reset on the one hand, and seal gasket and spring are as the combination of pressure sensitive original paper on the other hand, improve the precision of induction pressure; Or above-mentioned push rod is connected to above above-mentioned seal gasket, the shell fragment of one deck for forcing seal gasket to reset is posted downwards above above-mentioned seal gasket, this structure also can prevent from seal gasket from producing excessive deformation causing spring plate not automatically reset on the one hand, seal gasket and shell fragment also can combine as pressure sensitive original paper on the other hand, improve the precision of induction pressure.
As further improvement, above-mentioned airtight cavity is the airtight cavity that insulating material is made, and such spring plate and quiet shell fragment can be directly installed on the inwall of airtight cavity, is convenient to assembling, ensures circuit safety.
As further improvement, install the pressure switch of an electric pressure cooker in above-mentioned airtight cavity, above-mentioned spring plate and quiet shell fragment are spring plate in the pressure switch of electric pressure cooker and quiet shell fragment.This structure directly can adopt the pressure switch of electric pressure cooker, is convenient to design and assembly.
As further improvement, above-mentioned base is T-shaped, and above-mentioned cavity is positioned at the montant of T-shaped base and lower end closed, and the montant of T-shaped base is provided with horizontal pore, and cavity is in communication with the outside by pore; The cross bar of T-shaped base is provided with groove, and the uncovered of cavity top is positioned at bottom portion of groove; Above-mentioned seal gasket is sealingly fastened on bottom portion of groove, and the center of seal gasket is provided with the lower protuberance for being upwards out of shape, and lower protuberance stretches in cavity; Above-mentioned banking stop surrounding press seal rubber cushion surrounding, under the corresponding seal gasket of banking stop, protuberance is provided with the upper convex portion of being upwards out of shape for protuberance under seal gasket, and above-mentioned push rod to be connected under seal gasket above protuberance and through the upper convex portion of banking stop.This structure is simple, is convenient to design processing and manufacturing, and the montant of T-shaped base can be plugged on the seal cover of pressure cooking receptacle by the mode of split nut or buckle, ease of assembly, maintenance and replacing.
As further improvement, above-mentioned airtight cavity comprises the cylindrical shell of under shed and is fastened on the bottom of cylindrical shell under shed, and bottom surrounding compresses above-mentioned banking stop surrounding, and above-mentioned push rod passes bottom and bottom vertically slides relatively; Cylindrical shell, bottom and push rod all adopt insulating material, and this structure is simple, are convenient to design processing and manufacturing; Cylindrical shell, bottom and push rod all adopt insulating material, ensure circuit safety further.
As another kind of version, above-mentioned base is T-shaped, and above-mentioned cavity is positioned at the montant of T-shaped base and lower end closed, and the montant of T-shaped base is provided with horizontal pore, and cavity is in communication with the outside by pore; The cross bar of T-shaped base is provided with groove, and the uncovered of cavity top is positioned at bottom portion of groove; Above-mentioned seal gasket is sealingly fastened on bottom portion of groove, and the center of seal gasket is provided with the lower protuberance for being upwards out of shape, and lower protuberance stretches in cavity; Above-mentioned airtight cavity comprises the cylindrical shell of under shed and is fastened on the bottom of cylindrical shell under shed, is provided with the cavity vertically slided for banking stop below bottom; Above-mentioned push rod passes bottom and bottom vertically slides relatively; Cylindrical shell, bottom and push rod all adopt insulating material.This structure is simple, is convenient to design processing and manufacturing; Cylindrical shell, bottom and push rod all adopt insulating material, ensure circuit safety further.
As further improvement, above-mentioned seal gasket is cup shape, and the diapire of seal gasket is adjacent to the bottom surface of T-shaped base groove, and the sidewall of seal gasket is adjacent to the side of T-shaped base groove; In above-mentioned airtight cavity lower end tight insert port Cup-shaped seal rubber cushion, this structure is simple, is convenient to assembling.
The utility model compared with prior art mainly has following beneficial effect: structure is simple, and ease of assembly, is convenient to maintain and replace; May be used for, in culinary art control, to be also connected in circuit as safety device; The accuracy of induction pressure is higher; Circuit connection safety is high; Be provided with automatic reset structure, avoid spring plate not automatically reset.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pressure switch of electric pressure cooker of the prior art.
Fig. 2 is the cross-sectional view of the utility model embodiment one.
Fig. 3 is the cross-sectional view of the utility model embodiment two.
Fig. 4 is the cross-sectional view of the utility model embodiment three.
Fig. 5 is the cross-sectional view of the utility model embodiment four.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent.
In order to more succinct explanation the present embodiment, in accompanying drawing or explanation, some well known to a person skilled in the art but can omit to some extent with the incoherent parts of the main contents of this creation.In addition for ease of statement, in accompanying drawing, some parts has omission, zooms in or out, but does not represent size or the entire infrastructure of actual product.
Embodiment one:
As shown in Figure 2, a kind of Pneumatic pressure switch, comprises the pressure switch 9 of base 1, airtight cavity 2, seal gasket 3, push rod 4, electric pressure cooker.
Base 1 is T-shaped, is provided with the vertical and cavity of lower end closed in the montant of T-shaped base 1, cavity top uncovered, and the montant of T-shaped base 1 is provided with horizontal pore 11, and cavity is in communication with the outside by pore 11.
The cross bar of T-shaped base 1 is provided with groove, and the uncovered of cavity top is positioned at bottom portion of groove.
Seal gasket 3 is sealingly fastened on bottom portion of groove, and the center of seal gasket 3 is provided with the lower protuberance for being upwards out of shape, and lower protuberance stretches in cavity, and push rod 4 is connected to above lower protuberance.
The banking stop 5 for limiting seal gasket 3 upwards deflection is provided with above seal gasket 3, banking stop 5 outward flange is pressed on above seal gasket 3, the corresponding seal gasket of banking stop 53 times protuberance places are provided with upper convex portion, push rod 4 through banking stop 5 and with banking stop 5 relative sliding, produce excessive deformation to prevent seal gasket 3 and cause spring plate 92 not automatically reset.
The montant lower end outside of T-shaped base 1 is provided with external screw thread, thus the cross bar of T-shaped base 1 can be stuck in the outside of pressure cooking receptacle seal cover, the montant of T-shaped base 1 passes pressure cooking receptacle seal cover and locking nut, T-shaped base 1 is made to be plugged on pressure cooking receptacle seal cover, ease of assembly, maintenance and replacing.
Airtight cavity 2 comprises the cylindrical shell 21 of under shed and is fastened on the bottom 22 of cylindrical shell 21 under shed, and bottom 22 surrounding compresses and is arranged on above banking stop 5, push rod 4 through bottom 22 and with bottom 22 relative sliding, this structure is simple, is convenient to design processing and manufacturing.
Cylindrical shell 21, bottom 22 and push rod 4 all adopt insulating material, ensure circuit safety further.
The pressure switch 9 of electric pressure cooker is arranged in airtight cavity 2, and the pressure switch 9 of electric pressure cooker comprises insulator 91, spring plate 92, quiet shell fragment 93 and adjusting rod 94.This structure directly can adopt the pressure switch of electric pressure cooker, is convenient to design and assembly.
Spring plate 92 and quiet shell fragment 93 are only at contact place circuit turn-on, and spring plate 92 is connected to quiet shell fragment 93 wire be communicated with external circuitry, force the contact of spring plate 92 to depart from the contact of quiet shell fragment 93 after push rod 4 upward sliding.
The present embodiment can be directly installed on the seal cover of pressure cooking receptacle, by pore 11, the cavity of base 1 is communicated with in pot, gases at high pressure are utilized to force seal gasket 3 to produce elastic deformation, seal gasket 3 drives the relative bottom 22 of push rod 4 to slide again, then push rod 4 drives the contact of spring plate 92 to depart from the contact of quiet shell fragment 93, open circuit.The present embodiment structure is simple, and ease of assembly, is convenient to maintain and replace.By selecting the seal gasket 3 of different-thickness, material, shape, corresponding different elastic deformation power, makes the present embodiment may be used for, in culinary art control, to be also connected in control circuit as safety device.Unlike interior pot should splendid attire food again as induction pressure original paper, seal gasket 3 does not need splendid attire food, and therefore seal gasket 3 is as the convenient design and select material of pressure sensitive original paper, as long as select suitably, the accuracy of induction pressure is higher.
Embodiment two:
The present embodiment is identical with the primary structure of embodiment one, and difference is, as shown in Figure 3, seal gasket 3 posts the shell fragment 6 that one deck resets for forcing seal gasket 3 above downwards.Shell fragment 6 one aspect can prevent from seal gasket 3 from producing excessive deformation causing spring plate 92 not automatically reset, and seal gasket 3 and shell fragment 6 are as the combination of pressure sensitive original paper on the other hand, improve the precision of induction pressure.
Embodiment three:
The present embodiment is identical with the primary structure of embodiment one, difference is, as shown in Figure 4, do not comprise insulator, adjusting rod, spring plate 92 and quiet shell fragment 93 are directly installed on the madial wall of cylindrical shell 21, spring plate 92 and quiet shell fragment 93 are only at contact place circuit turn-on, and spring plate 92 and quiet shell fragment 93 respectively circuit are connected with binding post 95.
In addition seal gasket 3 does not adopt the mode of pasting shell fragment in embodiment two above, but the spring 7 arranged below bottom 22 for the elastic force providing seal gasket 3 to reset downwards, spring 7 is socketed in outside push rod 4, and spring 7 one end is against below bottom 22, and spring 7 other end is against seal gasket 3.Spring 7 one aspect can prevent from seal gasket 3 from producing excessive deformation causing spring plate 92 not automatically reset, and seal gasket 3 and spring 7 are as the combination of pressure sensitive original paper on the other hand, improve the precision of induction pressure.
Embodiment four:
The present embodiment is identical with the primary structure of embodiment one, difference is, as shown in Figure 5, do not comprise insulator, adjusting rod, spring plate 92 and quiet shell fragment 93 are directly installed on the madial wall of cylindrical shell 21, spring plate 92 and quiet shell fragment 93 are only at contact place circuit turn-on, and spring plate 92 and quiet shell fragment 93 respectively circuit are connected with binding post 95.
In addition bottom 22 is provided with the cavity vertically slided for banking stop 5 below, and push rod 4 is not connected to above lower protuberance, but is against above banking stop 5 push rod 4 lower end.
Seal gasket 3 in the present embodiment is cup shape, the diapire of cup shape seal gasket 3 is adjacent to the groove floor of T-shaped base 1, the sidewall of cup shape seal gasket 3 is adjacent to the groove side of T-shaped base 1, the bottom wall central place of cup shape seal gasket 3 is provided with the lower protuberance for being upwards out of shape, and lower protuberance stretches in cavity; In airtight cavity 2 lower end tight insert port Cup-shaped seal rubber cushion 3.
The present embodiment can be directly installed on the seal cover of pressure cooking receptacle, by pore 11, the cavity of base 1 is communicated with in pot, gases at high pressure are utilized to force the diapire generation elastic deformation upwards of cup shape seal gasket 3, thus drive push rod 4 and banking stop 5 upward sliding, then push rod 4 drives the contact of spring plate 92 to depart from the contact of quiet shell fragment 93, open circuit.After the air pressure in pressure cooking receptacle reduces, cup shape seal gasket 3 recovers reset condition, push rod 4 and banking stop 5 slide down to home position under the elastic force acting in conjunction of self gravitation and spring plate 92, and the contact conducting again of home position and quiet shell fragment 93 is also got back in the contact of spring plate 92.
These are only four specific embodiments of the present utility model, but design concept of the present utility model is not limited thereto, all the utility model that utilizes conceive the insubstantial modifications made the utility model, all fall within protection range of the present utility model.
Claims (10)
1. a Pneumatic pressure switch, is characterized in that, comprises base and airtight cavity, is provided with cavity in base, cavity open topped, and cavity bottom is in communication with the outside, and the open-mouth sealing fastening of cavity has seal gasket, is provided with push rod above seal gasket; Airtight cavity is connected to above base, is provided with the spring plate of contact-carrying and quiet shell fragment in airtight cavity, and spring plate and quiet shell fragment are only at contact place circuit turn-on, and spring plate is connected to quiet shell fragment the wire be communicated with external circuitry; Push rod stretches into below airtight cavity and airtight cavity vertically slides relatively, drives push rod upward sliding and forces the contact of spring plate to depart from the contact of quiet shell fragment when seal gasket produces upwards distortion.
2. Pneumatic pressure switch according to claim 1, is characterized in that, is provided with the banking stop for limiting seal gasket upwards deflection above described seal gasket.
3. Pneumatic pressure switch according to claim 2, it is characterized in that, the relatively described airtight cavity of described banking stop vertically slides, described push rod lower end is against above banking stop, seal gasket drives banking stop upward sliding when producing upwards distortion, and banking stop drives push rod upward sliding again and forces the contact of spring plate to depart from the contact of quiet shell fragment.
4. Pneumatic pressure switch according to claim 1, it is characterized in that, described push rod is connected to above described seal gasket, the spring for the elastic force providing seal gasket to reset is provided with downwards below described airtight cavity, spring one end is against airtight cavity, and the spring other end is against push rod or seal gasket; Or described push rod is connected to above described seal gasket, above described seal gasket, post the shell fragment of one deck for forcing seal gasket to reset downwards.
5. Pneumatic pressure switch according to claim 1, is characterized in that, described airtight cavity is the airtight cavity that insulating material is made.
6. Pneumatic pressure switch according to claim 1, is characterized in that, installs the pressure switch of an electric pressure cooker in described airtight cavity, and described spring plate and quiet shell fragment are spring plate in the pressure switch of electric pressure cooker and quiet shell fragment.
7. Pneumatic pressure switch according to claim 2, is characterized in that, described base is T-shaped, and described cavity is positioned at the montant of T-shaped base and lower end closed, and the montant of T-shaped base is provided with horizontal pore, and cavity is in communication with the outside by pore; The cross bar of T-shaped base is provided with groove, and the uncovered of cavity top is positioned at bottom portion of groove; Described seal gasket is sealingly fastened on bottom portion of groove, and the center of seal gasket is provided with the lower protuberance for being upwards out of shape, and lower protuberance stretches in cavity; Described banking stop surrounding press seal rubber cushion surrounding, under the corresponding seal gasket of banking stop, protuberance is provided with the upper convex portion of being upwards out of shape for protuberance under seal gasket, and described push rod to be connected under seal gasket above protuberance and through the upper convex portion of banking stop.
8. Pneumatic pressure switch according to claim 7, it is characterized in that, described airtight cavity comprises the cylindrical shell of under shed and is fastened on the bottom of cylindrical shell under shed, the banking stop surrounding described in bottom surrounding compresses, and described push rod passes bottom and bottom vertically slides relatively; Cylindrical shell, bottom and push rod all adopt insulating material.
9. Pneumatic pressure switch according to claim 3, is characterized in that, described base is T-shaped, and described cavity is positioned at the montant of T-shaped base and lower end closed, and the montant of T-shaped base is provided with horizontal pore, and cavity is in communication with the outside by pore; The cross bar of T-shaped base is provided with groove, and the uncovered of cavity top is positioned at bottom portion of groove; Described seal gasket is sealingly fastened on bottom portion of groove, and the center of seal gasket is provided with the lower protuberance for being upwards out of shape, and lower protuberance stretches in cavity; Described airtight cavity comprises the cylindrical shell of under shed and is fastened on the bottom of cylindrical shell under shed, is provided with the cavity vertically slided for banking stop below bottom; Described push rod passes bottom and bottom vertically slides relatively; Cylindrical shell, bottom and push rod all adopt insulating material.
10. Pneumatic pressure switch according to claim 9, is characterized in that, described seal gasket is cup shape, and the diapire of seal gasket is adjacent to the bottom surface of T-shaped base groove, and the sidewall of seal gasket is adjacent to the side of T-shaped base groove; In described airtight cavity lower end tight insert port Cup-shaped seal rubber cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520810254.XU CN204991594U (en) | 2015-10-20 | 2015-10-20 | Vapour -pressure type pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520810254.XU CN204991594U (en) | 2015-10-20 | 2015-10-20 | Vapour -pressure type pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204991594U true CN204991594U (en) | 2016-01-20 |
Family
ID=55125935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520810254.XU Expired - Fee Related CN204991594U (en) | 2015-10-20 | 2015-10-20 | Vapour -pressure type pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204991594U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228223A (en) * | 2016-03-23 | 2017-10-03 | 奥可利公司 | Suitable for the safety valve of cooking apparatus |
| CN109996475A (en) * | 2017-01-27 | 2019-07-09 | 松下知识产权经营株式会社 | Pressure type cooking device and pressure sensor unit |
-
2015
- 2015-10-20 CN CN201520810254.XU patent/CN204991594U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228223A (en) * | 2016-03-23 | 2017-10-03 | 奥可利公司 | Suitable for the safety valve of cooking apparatus |
| CN107228223B (en) * | 2016-03-23 | 2019-12-24 | 奥可利公司 | Safety valve suitable for cooking utensil |
| CN109996475A (en) * | 2017-01-27 | 2019-07-09 | 松下知识产权经营株式会社 | Pressure type cooking device and pressure sensor unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20201020 |
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| CF01 | Termination of patent right due to non-payment of annual fee |