CN205481979U - Expansion valve - Google Patents
Expansion valve Download PDFInfo
- Publication number
- CN205481979U CN205481979U CN201620296104.6U CN201620296104U CN205481979U CN 205481979 U CN205481979 U CN 205481979U CN 201620296104 U CN201620296104 U CN 201620296104U CN 205481979 U CN205481979 U CN 205481979U
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- China
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- valve body
- diaphragm
- unit head
- lower cover
- thimble
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- Temperature-Responsive Valves (AREA)
Abstract
The utility model provides an expansion valve, including valve body, unit head, O type circle, thimble, ejector pin cover, pearl seat part, damping clamp, spring, regulation cap, the unit head includes lower cover, upper cover, diaphragm, roof, steel ball, be provided with the cross rib on the roof to refrigerant through air inlet and gas outlet can reach through the clearance between roof and the lower cover the diaphragm below makes expansion valve make the fast reaction according to the temperature of evaporimeter export.
Description
Technical field
This utility model relates to relate to field of automobile air conditioner, in particular, relates to a kind of expansion valve.
Background technology
Expansion valve is the vitals of formed automobile air-conditioning refrigeration plant, it is one of four basic equipments in refrigeration system, expansion valve is the liquid refrigerant of low-temp low-pressure carrying out the High Temperature High Pressure liquid cold-producing medium reducing pressure by regulating flow of condenser, and sends into the refrigerant flow of vaporizer according to the regulation of the evaporator outlet degree of superheat.Expansion valve is to be experienced the evaporator outlet degree of superheat by unit head to the control principle of refrigerant flow, the pressure differential caused by cold-producing medium saturated in superheated refrigerant and unit head is to drive valve opening opening and closing, so that the most cold-producing mediums enter vaporizer, vaporizer is made to play maximum efficiency.Unit head includes upper cover, lower cover, the diaphragm being placed between upper cover and lower cover, has top board between diaphragm and lower cover, is filled with temperature sensing medium between upper cover and diaphragm.
The expansion valve of prior art, at hot summer, when automobile is placed on outdoor, ambient temperature experienced by unit head, and the diaphragm in unit head promotes top board to be in close contact with lower cover, and expansion valve is shown in a fully open operation；Now open air-conditioning, the high-temperature gas of evaporator outlet enters into below unit head, due to the close contact of top board Yu lower cover, it is impossible in time the hot-gas temperature of evaporator outlet is delivered to unit head, expansion valve can not make corresponding action in time, causes cooling system time delay.
Summary of the invention
In order to overcome the deficiencies in the prior art, this utility model provides a kind of sensitive expansion valve that evaporator outlet temperature quickly can be delivered to unit head.
This utility model solves its technical problem and be the technical scheme is that a kind of expansion valve, including valve body, unit head, O, thimble, top stem casing, pearl base member, damping folder, spring, adjustment cap；Middle chamber, air inlet, gas outlet, inlet, liquid outlet it is provided with in described valve body；It is threaded connection between described valve body and unit head, is sealed by O；Described top stem casing is arranged on below unit head in valve body middle chamber；In described thimble is arranged on valve body middle chamber and through top stem casing；Sealed by O between thimble and valve body；Described pearl base member is arranged on below thimble；It is provided with damping folder and spring below described pearl base member, supports with adjustment cap is fixing；It is threaded connection between described adjustment cap and valve body, is sealed by O；Described unit head includes lower cover, upper cover, diaphragm, top board, steel ball, by argon arc welding rotating welding fixing seal between described lower cover, diaphragm, upper cover three；It is filled with temperature sensing medium between diaphragm and upper cover, by upper cover and steel ball welded seal, prevents temperature sensing medium to run off；It is characterized in that: described top board is arranged between lower cover and diaphragm, cross rib it is provided with on described top board, with will pass through air inlet and gas outlet cold-producing medium can be arrived below described diaphragm by the gap between top board and lower cover, promote expansion valve to make fast reaction according to the temperature of evaporator outlet.
Compared with prior art, the utility model has the advantage of: use technique scheme, cross rib it is provided with on described top board, with will pass through air inlet and gas outlet cold-producing medium can be arrived below described diaphragm by the gap between top board and lower cover, promote expansion valve to make fast reaction according to the temperature of evaporator outlet.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model expansion valve.
Fig. 2 is the structural representation of unit head described in this utility model expansion valve.
Fig. 3 is the structural representation of top board described in this utility model expansion valve.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
A kind of expansion valve as described in Figure, including valve body 1, unit head 2, O 3, thimble 4, top stem casing 5, O 6, pearl base member 7, damping folder 8, spring 9, O 10, adjustment cap 11；Middle chamber 12, air inlet 13, gas outlet 14, inlet 15, liquid outlet 16 it is provided with in described valve body 1；It is threaded connection between described valve body 1 and unit head 2, is sealed by O 3；Described top stem casing 5 is arranged on below unit head 2 in valve body 1 middle chamber 12；In described thimble 4 is arranged on valve body 1 middle chamber 12 and through top stem casing 5；Sealed by O 5 between thimble 4 and valve body 1；Described pearl base member 7 is arranged on below thimble 4；It is provided with damping folder 8 and spring 9 below described pearl base member, supports with adjustment cap 11 is fixing；It is threaded connection between described adjustment cap 11 and valve body 1, is sealed by O 10；Described unit head 2 includes lower cover 21, upper cover 22, diaphragm 23, top board 24, steel ball 25, by argon arc welding rotating welding fixing seal between described lower cover 21, diaphragm 23, upper cover 22 three；It is filled with temperature sensing medium between diaphragm 23 and upper cover 22, by upper cover 22 and steel ball 25 welded seal, prevents temperature sensing medium to run off；It is characterized in that: described top board 24 is arranged between lower cover 21 and diaphragm 23, it is provided with cross rib 26 on described top board 24, with will pass through air inlet 13 and gas outlet 14 cold-producing medium can be arrived below described diaphragm 23 by the gap 27 between top board 24 and lower cover 21, promote expansion valve to make fast reaction according to the temperature of evaporator outlet.
Compared with prior art, the utility model has the advantage of: use technique scheme, cross rib it is provided with on described top board, with will pass through air inlet and gas outlet cold-producing medium can arrive below described diaphragm by the gap between top board and lower cover, with will pass through air inlet and gas outlet cold-producing medium can arrive smoothly below described diaphragm, promote expansion valve to make fast reaction according to the temperature of evaporator outlet.
Claims (1)
1. a heating power expansion valve, including valve body, unit head, O, thimble, top stem casing, pearl base member, damping folder, spring, adjustment cap；Middle chamber, air inlet, gas outlet, inlet, liquid outlet it is provided with in described valve body；It is threaded connection between described valve body and unit head, is sealed by O；Described top stem casing is arranged on below unit head in valve body middle chamber；In described thimble is arranged on valve body middle chamber and through top stem casing；Sealed by O between thimble and valve body；Described pearl base member is arranged on below thimble；It is provided with damping folder and spring below described pearl base member, supports with adjustment cap is fixing；It is threaded connection between described adjustment cap and valve body, is sealed by O；Described unit head includes lower cover, upper cover, diaphragm, top board, steel ball, by argon arc welding rotating welding fixing seal between described lower cover, diaphragm, upper cover three；It is filled with temperature sensing medium between diaphragm and upper cover, by upper cover and steel ball welded seal, prevents temperature sensing medium to run off；It is characterized in that: described top board is arranged between lower cover and diaphragm, cross rib it is provided with on described top board, the gap can passed through between top board and lower cover will pass through the cold-producing medium of air inlet and gas outlet arrives below described diaphragm, promotes expansion valve to make fast reaction according to the temperature of evaporator outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620296104.6U CN205481979U (en) | 2016-04-11 | 2016-04-11 | Expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620296104.6U CN205481979U (en) | 2016-04-11 | 2016-04-11 | Expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205481979U true CN205481979U (en) | 2016-08-17 |
Family
ID=56645125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620296104.6U Active CN205481979U (en) | 2016-04-11 | 2016-04-11 | Expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205481979U (en) |
-
2016
- 2016-04-11 CN CN201620296104.6U patent/CN205481979U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |