CN203869390U - H-type thermal expansion valve - Google Patents
H-type thermal expansion valve Download PDFInfo
- Publication number
- CN203869390U CN203869390U CN201420247698.2U CN201420247698U CN203869390U CN 203869390 U CN203869390 U CN 203869390U CN 201420247698 U CN201420247698 U CN 201420247698U CN 203869390 U CN203869390 U CN 203869390U
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- expansion valve
- seal ring
- conical seal
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Abstract
The utility model relates to the technical field of expansion valves, in particular to an H-type thermal expansion valve. The H-type thermal expansion valve is connected with a refrigerating system through four ports, wherein the first port is connected with a receiver drier, the second port is connected with an evaporator inlet, the third port is connected with an evaporator outlet and the fourth port is connected with a compressor inlet; a measuring hole, a steel ball and a belleville spring are arranged respectively from top to bottom between the first port connected with the receiver drier and the second port connected with the evaporator inlet, a movable angle part is arranged at the upper end of the measuring hole and connected with a temperature sensing element, and a conical seal ring is arranged on the outer side of the belleville spring; the conical seal ring, the steel ball and the belleville spring are arranged in a capsule; the conical seal ring is made of polytetrafluoroethylene; and a down force compensation film is arranged on the periphery of the temperature sensing element. According to the H-type thermal expansion valve, the adjusting sensitivity is improved, the structure is compact, and the shock resistance is reliable; temperature sensing is reliable without deflection due to the design of the capsule; and the conical seal ring has an automatic compensation function under the action of the belleville spring.
Description
Technical field
The utility model relates to expansion valve technology technical field, especially a kind of H type heating power expansion valve.
Background technology
H type expansion valve by the temperature sensor section (bellows and air cavity) of upper end, the operating part (sap cavity) of lower end and middle transmission mechanism (transmission lever, needle and balance section sealing) form.The suction temperature of experiencing by bellows changes changes the temperature sensing agent saturation pressure in bellows chamber, through the aperture of transmission lever, needle and balance section sealing control valve.Improve adjusting sensitivity, just require intermediate transfer linkage, balance section sealing especially, the frictional resistance in adjustment process is as far as possible little, frictional resistance increases the decline that will cause regulating sensitivity, also requires the leakage rate of balance section sealing as far as possible little simultaneously.During due to work, between bottom sap cavity and top air cavity, there is pressure reduction, its pressure difference is the pressure drop that evaporimeter and connecting line flow resistance cause, different according to the structure of evaporimeter, pressure drop is generally 0.03～0.05MPa, and the pressure of bottom sap cavity is higher than the pressure of top air cavity.The liquid refrigerant of bottom sap cavity leaks to top air cavity by balance section sealing under the effect of pressure reduction, and at transmission lever and air cavity intersection evaporation endothermic, hot conduction and convection heat exchange by transmission lever makes temperature that bellows experiences lower than actual suction temperature, cause the temperature sensing agent saturation pressure in bellows chamber on the low side, the aperture of valve is less than normal, when serious, will cause closing of valve.Foreign standard requirement, under 0.2MPa pressure reduction condition, balance portion leakage rate is below 50mL/min.Therefore balance part sealing structure will have a strong impact on performance and the normal work of expansion valve.
Utility model content
In order to overcome existing above-mentioned deficiency, the utility model provides a kind of H type heating power expansion valve.
The utility model solves the technical scheme that its technical problem adopts: a kind of H type heating power expansion valve, and be provided with four interfaces and be connected with refrigeration system, one connects liquid storage dryer, and one connects evaporator; Two other interface, one connects evaporator outlet, one connects compressor inlet, connect liquid storage dryer and between evaporator, be respectively equipped with from top to bottom measured hole, steel ball, butterfly spring with being connected, measured hole upper end is provided with movable corner, movable corner connects temperature-sensitive original paper, and butterfly spring outside is provided with conical seal ring.
According to another embodiment of the present utility model, further comprise that conical seal ring, steel ball and butterfly spring are located in bellows.
According to another embodiment of the present utility model, further comprise that conical seal ring material is for poly-four Buddhist ethene.
According to another embodiment of the present utility model, further comprise that temperature-sensitive original paper is arranged with downforce compensation film outward.
The beneficial effects of the utility model are, temperature-sensitive bag, capillary and outer balance that the utility model has been cancelled in F type heating power expansion valve are taken over, and have improved adjusting sensitivity, compact conformation, and antivibration is reliable; Bellows design, temperature-sensitive is reliable, zero deflection; Conical seal ring, under the effect of butterfly spring, has automatic compensation function.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
In figure, 1. connect liquid storage dryers, 2. connect evaporator, and 3. evaporator outlet, 4. connects compressor inlet, 5. measured hole, 6. steel ball, 7. butterfly spring, 8. movable corner, 9. temperature-sensitive original paper, 10. conical seal ring, 11. bellows, 12. downforce compensation films.
The specific embodiment
If Fig. 1 is structural representation of the present utility model, a kind of H type heating power expansion valve, is provided with four interfaces and is connected with refrigeration system, and one connects 1, one of liquid storage dryer and connects evaporator 2; Two other interface, one connects evaporator outlet 3, one connects compressor inlet 4, connect liquid storage dryer 1 and between evaporator 2, be respectively equipped with from top to bottom measured hole 5, steel ball 6, butterfly spring 7 with being connected, measured hole 5 upper ends are provided with movable corner 8, movable corner 8 connects temperature-sensitive original paper 9, butterfly spring 7 outsides are provided with conical seal ring 10, conical seal ring 10, steel ball 6 and butterfly spring 7 are located in bellows 11, conical seal ring 10 materials are poly-four Buddhist ethene, the outer downforce compensation film 12 that is arranged with of temperature-sensitive original paper 9.The utility model is installed simple, and temperature-sensitive bag, capillary and the outer balance cancelled in F type heating power expansion valve are taken over, and have improved adjusting sensitivity, compact conformation, and antivibration is reliable.
Claims (4)
1. a H type heating power expansion valve, is provided with four interfaces and is connected with refrigeration system, and one connects liquid storage dryer (1), and one connects evaporator (2); Two other interface, one connects evaporator outlet (3), one connects compressor inlet (4), described connection liquid storage dryer (1) is respectively equipped with measured hole (5), steel ball (6), butterfly spring (7) from top to bottom with being connected between evaporator (2), described measured hole (5) upper end is provided with movable corner (8), described movable corner (8) connects temperature-sensitive original paper (9), it is characterized in that, described butterfly spring (7) outside is provided with conical seal ring (10).
2. a kind of H type heating power expansion valve according to claim 1, is characterized in that, described conical seal ring (10), steel ball (6) and butterfly spring (7) are located in bellows (11).
3. a kind of H type heating power expansion valve according to claim 1, is characterized in that, described conical seal ring (10) material is poly-four Buddhist ethene.
4. a kind of H type heating power expansion valve according to claim 1, is characterized in that, the outer downforce compensation film (12) that is arranged with of described temperature-sensitive original paper (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247698.2U CN203869390U (en) | 2014-05-15 | 2014-05-15 | H-type thermal expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247698.2U CN203869390U (en) | 2014-05-15 | 2014-05-15 | H-type thermal expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203869390U true CN203869390U (en) | 2014-10-08 |
Family
ID=51650334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420247698.2U Expired - Fee Related CN203869390U (en) | 2014-05-15 | 2014-05-15 | H-type thermal expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203869390U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928010A (en) * | 2020-08-12 | 2020-11-13 | 深圳市亨瑞达制冷设备有限公司 | Water-cooled cold water machine |
-
2014
- 2014-05-15 CN CN201420247698.2U patent/CN203869390U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928010A (en) * | 2020-08-12 | 2020-11-13 | 深圳市亨瑞达制冷设备有限公司 | Water-cooled cold water machine |
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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: 20141008 Termination date: 20150515 |
|
| EXPY | Termination of patent right or utility model |