CN2143701Y - Temperature control pressure limiting valve - Google Patents

Temperature control pressure limiting valve Download PDF

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Publication number
CN2143701Y
CN2143701Y CN 92243426 CN92243426U CN2143701Y CN 2143701 Y CN2143701 Y CN 2143701Y CN 92243426 CN92243426 CN 92243426 CN 92243426 U CN92243426 U CN 92243426U CN 2143701 Y CN2143701 Y CN 2143701Y
Authority
CN
China
Prior art keywords
pressure
valve
gas discharge
bonnet
steam pipe
Prior art date
Application number
CN 92243426
Other languages
Chinese (zh)
Inventor
卢祖良
刘云涛
Original Assignee
卢祖良
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 卢祖良 filed Critical 卢祖良
Priority to CN 92243426 priority Critical patent/CN2143701Y/en
Application granted granted Critical
Publication of CN2143701Y publication Critical patent/CN2143701Y/en

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Abstract

The utility model relates to a temperature control pressure limiting valve, comprising a valve cap, a valve core and a gas discharge pipe. The inside of the gas discharge pipe is provided with a gas discharge hole communicated with the inner chamber of the pressure vessel, and the valve cap is connected with the gas discharge pipe. A gas cavity is arranged between the valve cap and the upper end surface of the gas discharge pipe, and the valve core is arranged on the upper opening of the gas discharge hole of the gas discharge pipe in the gas cavity. The valve core is provided with a temperature control element, and the valve cap is provided with a pressure relief hole to communicate the gas cavity and the air space. The utility model uses the temperature to control the working pressure of the pressure vessel, to save the steel material, reduce the cost, improve the technical content and avoid phenomenon that the pressure-limiting valve punches to fly, losses and rotates for gas discharge to scald people easily, and is an ideal pressure control device.

Description

The utility model belongs to the temperature pressure control device of pressurized container, particularly a kind of limiting valve of pressure cooker.
The control of the working pressure in the pressure cooker is realized by the pressure-limit valve parts.Existing pressure-limit valve is that spool is placed on the steam discharge pore that discharges steam in the pot, and when vapor pressure in the pot was equal to or greater than the working pressure standard of regulation, spool was by jack-up, and steam obtains discharging in the pot.The technical requirements of the working pressure in the pressure cooker guarantees that by the gross weight of valve body, valve gap and the spool of pressure-limit valve existing pressure-limit valve has the following disadvantages:
(1) to need the pressure-limit valve of certain mass to guarantee the working pressure of pressure cooker, so exist the bigger valve body of quality;
(2) for making spool and valve body energy strong bonded, used the bigger spool of quality, and spool generally is to make with the copper material that is difficult for corrosion;
(3) withhold at the valve body on the exhaust steam pipe when pot inner pressure rises to a certain degree, exist valve body is dashed possibility from exhaust steam pipe, pound and hurt sb.'s feelings or thing;
(4) after pressure cooker uses, valve body must be moved apart the exhaust steam pipe steam discharge, have awkward problem.
The objective of the invention is deficiency, design a kind of temperature control pressure-limit valve that utilizes the interior vapor pressure of temperature control element pilot pressure pot in the technical requirements that meets the pressure cooker working pressure at existing pressure-limit valve.It is easy to use, and is rational in infrastructure.
The purpose of this utility model is achieved in that pressure-limit valve comprises bonnet, spool and exhaust steam pipe, the exhaust hole that communicates with the pressurized container inner chamber is arranged in the exhaust steam pipe, bonnet and exhaust steam pipe connect, between bonnet and the exhaust steam pipe upper-end surface air cavity is arranged, it is suitable for reading that spool is placed on the exhaust hole of the exhaust steam pipe in the air cavity, and temperature control element is arranged on the spool.There is pressure relief vent to be communicated with air cavity and airspace on the bonnet.
Exhaust steam pipe can be to be threaded with bonnet.Preferably two sections are threaded.
Temperature control element can be a tinsel, also can be occasionally thermistor of thermoelectricity.But cost tinsel low, easy for installation, especially bimetallic strip preferably.Tinsel is contained between bonnet and the exhaust steam pipe.
The utility model will have pressure-limit valve now and change into temperature control element pilot pressure container work pressure with quality control pressurized container working pressure, utilize the interior temperature of container to increase with pressure, make temperature control element distortion steam bleeding.Pressure control is effective, and has saved steel, has reduced cost.Because bonnet and exhaust steam pipe are bound up, and fetch bonnet when having avoided valve body to fly away from opening, the directed steam discharge of the pressure relief vent on the bonnet avoids former pressure-limit valve steam discharge rotation easily to scald people's defective, and safe in utilization, convenient, assembling simply.
Structure of the present utility model is provided by following examples and accompanying drawing thereof.
Fig. 1 is a structural representation of the present utility model.
As shown in the figure, exhaust steam pipe (4) is installed on the pressure container cover (5) by nut (7), and two sections spiral marking connections of bonnet (1) are in exhaust steam pipe (4) outside, and when needs became flexible bonnet (1) steam bleeding, bonnet (1) can not come off from exhaust steam pipe (4).It is suitable for reading that spool (2) is placed in exhaust hole (6), and spool (2) top is tinsel temperature control element (3).During work, kettle temperature rises, and heat passes to spool (2) and tinsel (3) by exhaust steam pipe (4) and exhaust hole (6), makes tinsel (3) produce a deformation force F1.The action direction of F1 is downward, and temperature is high more, and F1 is big more, thereby stops the steam in the pot to be discharged.Simultaneously, vapor pressure F2 in the pot also rises with kettle temperature and improves, F2 upwards acts on spool (2), when F2 increases to greater than F1 with the temperature rising, that is to say that pressure reaches certain value (as 100KPa) at a certain temperature, when tinsel (3) acts on the downward power F1 of spool (2) less than pot inner pressure F2, make a concerted effort F make progress jack-up spool (2) and tinsel (3), steam just passes through exhaust hole (6) through vapour chamber (8) in the pot, discharge from pressure relief vent (9), as F2 during less than F1, spool (2) recovers stifled pressure steam vent (6) again.
When having vapour pressure to need to uncap again in the pressure cooker, only need bonnet (1) is unscrewed gently, at this moment tinsel (3) disappears at once to the directed force F 1 of spool (2), and by jack-up, steam is discharged from the pot, can uncap under the effect of spool (2) vapour pressure F2 in pot.During the working pressure pot, only need tighten bonnet (1) and get final product.
When exhaust steam pipe (4) needs cleaning,, break away from exhaust steam pipe (4) and get final product as long as bonnet (1) is turned on.

Claims (5)

1, a kind of temperature control pressure-limit valve, comprise the exhaust hole (6) that communicates with the pressurized container inner chamber is arranged in bonnet (1), spool (2) and exhaust steam pipe (4), the exhaust steam pipe (4), it is characterized in that bonnet (1) and exhaust steam pipe (4) connect, between bonnet (1) and exhaust steam pipe (4) upper-end surface air cavity (8) is arranged, it is suitable for reading that spool (2) is placed on the exhaust hole (6) of the exhaust steam pipe (4) in the air cavity (8), temperature control element (3) is arranged on the spool (2), have pressure relief vent (9) to be communicated with air cavity (8) and airspace on the bonnet (1).
2, pressure-limit valve according to claim 1 is characterized in that exhaust steam pipe (4) and bonnet (1) are to be threaded.
3, pressure-limit valve according to claim 1 and 2 is characterized in that exhaust steam pipe (4) and bonnet (1) are that two sections are threaded.
4, pressure-limit valve according to claim 1 is characterized in that temperature control element (3) is a bimetallic strip.
5, pressure-limit valve according to claim 4 is characterized in that bimetallic strip (3) is contained between bonnet (1) and the exhaust steam pipe (4).
CN 92243426 1992-11-20 1992-11-20 Temperature control pressure limiting valve CN2143701Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 92243426 CN2143701Y (en) 1992-11-20 1992-11-20 Temperature control pressure limiting valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 92243426 CN2143701Y (en) 1992-11-20 1992-11-20 Temperature control pressure limiting valve

Publications (1)

Publication Number Publication Date
CN2143701Y true CN2143701Y (en) 1993-10-13

Family

ID=33782980

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 92243426 CN2143701Y (en) 1992-11-20 1992-11-20 Temperature control pressure limiting valve

Country Status (1)

Country Link
CN (1) CN2143701Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103431749A (en) * 2013-02-06 2013-12-11 陆一铭 Delay cut-off valve of electric pressure cooker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103431749A (en) * 2013-02-06 2013-12-11 陆一铭 Delay cut-off valve of electric pressure cooker
CN103431749B (en) * 2013-02-06 2017-04-12 陆一铭 Delay cut-off valve of electric pressure cooker

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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