CN209781696U - Bidirectional expansion valve structure for heat pump - Google Patents
Bidirectional expansion valve structure for heat pump Download PDFInfo
- Publication number
- CN209781696U CN209781696U CN201920146784.7U CN201920146784U CN209781696U CN 209781696 U CN209781696 U CN 209781696U CN 201920146784 U CN201920146784 U CN 201920146784U CN 209781696 U CN209781696 U CN 209781696U
- Authority
- CN
- China
- Prior art keywords
- valve core
- hole
- valve
- transmission rod
- heat pump
- Prior art date
- Legal status (The legal status 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 status listed.)
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 34
- 239000012530 fluid Substances 0.000 claims description 3
- 239000008358 core component Substances 0.000 claims 5
- 238000004378 air conditioning Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000005057 refrigeration Methods 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000006837 decompression Effects 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 15
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Air-Conditioning For Vehicles (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The utility model discloses a two-way expansion valve structure for heat pump, including the valve body, be equipped with the transfer line in the valve body, go up the lower extreme of transfer line and connect down the transfer line, the below of lower transfer line is equipped with the case subassembly, and case subassembly below is equipped with adjusting nut, is equipped with between case subassembly and the adjusting nut and makes the case subassembly support the regulating spring of transfer line lower extreme down, its characterized in that, be equipped with the cavity with case subassembly, hole B intercommunication in the valve body, be equipped with the case frame that is used for sealing the interface channel between hole B and the cavity in this cavity, case frame below is equipped with an adjusting nut equally, is equipped with an adjusting spring between this adjusting nut and the case frame equally. The utility model discloses make thermal expansion valve both play the throttle decompression effect in electric air conditioning system, make the air conditioner refrigeration, can play the heating effect again in air conditioner heat pump system, reduced air conditioner heat pump cost, realized the function of bidirectional operation.
Description
Technical Field
The utility model relates to a thermal expansion valve structure for electric automobile air conditioner heat pump belongs to vehicle air conditioner thermal expansion valve technical field.
Background
Air conditioning systems are widely used in the field of electric automobiles, and with the rapid development of the electric automobile industry, higher requirements are put forward on the cost, energy utilization and human body comfort of air conditioners, so that the rapid development of air conditioning heat pump systems is promoted.
As shown in fig. 1, the thermal expansion valve for the conventional automobile air conditioner comprises a valve body 2, wherein an upper transmission rod 3 is arranged in the valve body 2, the upper end of the upper transmission rod 3 is exposed out of the valve body 2, and a movable tool bit 1 is arranged at the exposed end; the lower end of the upper transmission rod 3 is connected with a lower transmission rod 4, a valve core assembly 5 is arranged below the lower transmission rod 4, an adjusting nut 7 is arranged below the valve core assembly 5, and an adjusting spring 6 which enables the valve core assembly 5 to abut against the lower end of the lower transmission rod 4 is arranged between the valve core assembly 5 and the adjusting nut 7; the two sides of the valve body 2 are provided with a hole C and a hole D which are communicated with each other relative to the position of the upper transmission rod 3, a hole B communicated with the lower transmission rod 4 and a hole A communicated with the valve core assembly 5; under the normal state, hole A and hole B do not communicate, and when case subassembly 5 moved down under the effect of lower transfer line 4, hole A and hole B communicate. The structure is a control element for automatically regulating the refrigerant flowing into the evaporator of the air conditioner according to the change of the evaporation pressure and the superheat degree of the gaseous refrigerant at the outlet of the evaporator. When the automobile air conditioner is used for refrigerating, the refrigerant flows in from the hole A, and the flow of the refrigerant flowing into the evaporator through the hole B is automatically adjusted according to the power head 1 and the outlet pressure of the evaporator at the hole C. The conventional air-conditioning heat pump system has high cost, and the heat exchanger outside the vehicle is difficult to defrost and has poor comfort.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a two-way vehicle air conditioner thermal expansion valve structure that heat pump was used to solve the difficult problem of outer heat exchanger defrosting.
In order to solve the above problem, the technical solution of the present invention is: a two-way expansion valve structure for a heat pump comprises a valve body, wherein an upper transmission rod is arranged in the valve body, the upper end of the upper transmission rod is exposed out of the valve body, a moving cutter head is arranged at the exposed end, the lower end of the upper transmission rod is connected with a lower transmission rod, a valve core assembly is arranged below the lower transmission rod, an adjusting nut is arranged below the valve core assembly, an adjusting spring enabling the valve core assembly to abut against the lower end of the lower transmission rod is arranged between the valve core assembly and the adjusting nut, holes C and D which are mutually communicated are arranged at the two sides of the valve body relative to the upper transmission rod, a hole communicated with the lower transmission rod is arranged at the position relative to the lower transmission rod, a hole A communicated with the valve core assembly is arranged at the position relative to the valve core assembly, the hole A is not communicated with the hole B under the normal state, and when the valve core assembly moves downwards under, a valve core frame for sealing a connecting channel between the hole B and the cavity is arranged in the cavity, an adjusting nut is also arranged below the valve core frame, and an adjusting spring is also arranged between the adjusting nut and the valve core frame; under the normal state, the valve core frame is arranged in a connecting channel of the hole B and a cavity where the valve core frame is located, and the hole B is not communicated with the valve core assembly; bore B communicates with the cartridge assembly when the cartridge cage moves downward under the influence of fluid entering bore B.
Preferably, the bottom surfaces of the two adjusting nuts are on the same plane with the bottom surface of the valve body.
Preferably, a sealing ring is arranged between the valve core frame and the connecting channel where the valve core frame is located.
The structure is tightly sealed with the valve body through the sealing ring, when the structure works in the forward direction, the refrigerant pressure compresses the sealing ring to seal, and the expansion valve has the function of a thermal expansion valve for an automobile air conditioner. When the expansion valve works in the reverse direction, the pressure of the refrigerant is greater than the rigidity of the spring, the sealing part of the sealing ring is opened, the function of the expansion valve for the heat pump is realized, and the function of forward and reverse work of the expansion valve is realized.
The utility model discloses increase a flow direction structure on traditional H type thermostatic expansion valve's basis, and then play air conditioning system heating function when the heat pump operation. The utility model discloses make thermal expansion valve both play the throttle decompression effect in electric air conditioning system, make the air conditioner refrigeration, can play the heating effect again in air conditioner heat pump system, reduced air conditioner heat pump cost for control logic is simpler.
Drawings
Fig. 1 is a schematic structural view of a thermostatic expansion valve for a conventional heat pump;
Fig. 2 is a schematic structural view of a bidirectional expansion valve for a heat pump according to the present invention;
Fig. 3 is a partially enlarged view of fig. 2.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 2 and 3, for the structure of the two-way expansion valve for a heat pump provided by the present invention, it comprises a valve body 2, an upper transmission rod 3 is arranged in the valve body 2, the upper end of the upper transmission rod 3 is exposed from the valve body 2, the exposed end is provided with a movable cutter head 1, the lower end of the upper transmission rod 3 is connected with a lower transmission rod 4, a valve core assembly 5 is arranged below the lower transmission rod 4, an adjusting nut 7 is arranged below the valve core assembly 5, an adjusting spring 6 is arranged between the valve core assembly 5 and the adjusting nut 7 to make the valve core assembly 5 abut against the lower end of the lower transmission rod 4, holes C and D which are mutually communicated are arranged at the positions of both sides of the valve body 2 relative to the upper transmission rod 3, a hole B which is communicated with the lower transmission rod 4 is arranged at the position relative to the lower transmission rod 4, a hole a which is communicated with the valve core assembly 5 is arranged at the, the hole A communicates with the hole B. A cavity communicated with the valve core assembly 5 and the hole B is arranged in the valve body 2, a valve core frame 8 for sealing a connecting channel between the hole B and the cavity is arranged in the cavity, an adjusting nut 7 is also arranged below the valve core frame 8, and an adjusting spring 6 is also arranged between the adjusting nut 7 and the valve core frame 8; in a normal state, the valve core frame 8 is arranged in a connecting channel of the cavity where the hole B and the valve core frame 8 are located, and the hole B is not communicated with the valve core assembly 5; when the spool carrier 8 moves downwardly under the action of fluid entering the bore B, the bore B communicates with the spool assembly 5. The bottom surfaces of the two adjusting nuts 7 are on the same plane with the bottom surface of the valve body 2. A sealing ring 9 is arranged between the valve core frame 8 and the connecting channel where the valve core frame is located. And a sealing element is additionally arranged between the adjusting nut 7 and the inner wall of the valve body 2 to prevent liquid leakage.
the utility model discloses both included the expansion valve part that traditional vehicle air conditioner refrigeration used, increased vehicle air conditioner heat pump during operation work part again. When the automobile air conditioner is used for refrigerating, the refrigerant flows in from the hole A, and the flow of the refrigerant flowing into the evaporator through the hole B is automatically adjusted according to the outlet pressure of the evaporator at the power head 1 and the hole C, as shown in figure 2.
When the heat pump of the automobile air conditioner works, the bidirectional expansion valve works in reverse direction, and finally the refrigerant flows to the hole A through the hole B. The specific working mode is as follows: when the refrigerant enters from the hole B, the refrigerant pressure is smaller than the rigidity of the adjusting spring 6, so that the space between the hole A and the hole B is tightly sealed by the valve core assembly 5, and the refrigerant cannot flow into the hole; since the refrigerant pressure is greater than the pressure of the regulating spring 6, the refrigerant pressure opens the connection passage between the hole B and the valve core frame 8, and the refrigerant enters from the connection passage and flows into the hole a through the cavity where the valve core assembly 5 is located, thereby repeating the cycle, as shown in fig. 3.
Claims (3)
1. a two-way expansion valve structure for a heat pump comprises a valve body (2), an upper transmission rod (3) is arranged in the valve body (2), the upper end of the upper transmission rod (3) is exposed out of the valve body (2), a movable cutter head (1) is arranged at the exposed end, the lower end of the upper transmission rod (3) is connected with a lower transmission rod (4), a valve core component (5) is arranged below the lower transmission rod (4), an adjusting nut (7) is arranged below the valve core component (5), an adjusting spring (6) enabling the valve core component (5) to abut against the lower end of the lower transmission rod (4) is arranged between the valve core component (5) and the adjusting nut (7), holes C and holes D which are mutually communicated are arranged at two sides of the valve body (2) relative to the position of the upper transmission rod (3), a hole (B) which is communicated with the valve core component (4) relative to the position of, under the normal state, the hole A is not communicated with the hole B, and when the valve core assembly (5) moves downwards under the action of the lower transmission rod (4), the hole A is communicated with the hole B, the valve is characterized in that a cavity communicated with the valve core assembly (5) and the hole B is arranged in the valve body (2), a valve core frame (8) used for sealing a connecting channel between the hole B and the cavity is arranged in the cavity, an adjusting nut (7) is also arranged below the valve core frame (8), and an adjusting spring (6) is also arranged between the adjusting nut (7) and the valve core frame (8); in a normal state, the valve core frame (8) is arranged in a connecting channel of the cavity where the hole B and the valve core frame (8) are located, and the hole B is not communicated with the valve core assembly (5); when the spool carrier (8) moves downwardly under the action of fluid entering the bore B, the bore B communicates with the spool assembly (5).
2. A bidirectional expansion valve structure for a heat pump according to claim 1, wherein bottom surfaces of both of said adjusting nuts (7) are on the same plane as a bottom surface of the valve body (2).
3. The structure of a bidirectional expansion valve for a heat pump according to claim 1, wherein a seal ring (9) is provided between the valve core frame (8) and the connecting passage where it is located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920146784.7U CN209781696U (en) | 2019-01-28 | 2019-01-28 | Bidirectional expansion valve structure for heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920146784.7U CN209781696U (en) | 2019-01-28 | 2019-01-28 | Bidirectional expansion valve structure for heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209781696U true CN209781696U (en) | 2019-12-13 |
Family
ID=68793910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920146784.7U Active CN209781696U (en) | 2019-01-28 | 2019-01-28 | Bidirectional expansion valve structure for heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209781696U (en) |
-
2019
- 2019-01-28 CN CN201920146784.7U patent/CN209781696U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 314000 No. 1888, Dongfeng Road, Daqiao Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Weile New Energy Compressor Co.,Ltd. Country or region after: China Address before: 201600 No.1, Weile Road, Jiuting Town, Songjiang District, Shanghai Patentee before: SHANGHAI VELLE AUTOMOBILE AIR CONDITIONER CO.,LTD. Country or region before: China |