CN108119699B - Pilot valve and main valve body connecting structure and electronic expansion valve of automotive air conditioning system - Google Patents
Pilot valve and main valve body connecting structure and electronic expansion valve of automotive air conditioning system Download PDFInfo
- Publication number
- CN108119699B CN108119699B CN201611079533.9A CN201611079533A CN108119699B CN 108119699 B CN108119699 B CN 108119699B CN 201611079533 A CN201611079533 A CN 201611079533A CN 108119699 B CN108119699 B CN 108119699B
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- China
- Prior art keywords
- main valve
- valve body
- pilot valve
- pressing sheet
- seat
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- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- 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
Abstract
The invention discloses a connecting structure of a pilot valve and a main valve body and an electronic expansion valve of a vehicle air-conditioning system, which comprises a main valve body, a pilot valve part detachably arranged on the main valve body and a rotor assembly arranged on the pilot valve part, wherein a coil assembly is arranged outside the rotor assembly, the pilot valve part comprises a seat body and a thin-wall sleeve part extending upwards from the seat body, the seat body is pressed and fixed on the main valve body through a pressing sheet, and the pressing sheet is fixed with the main valve body through a screw. The invention directly adopts the pressing sheet to press the seat body of the pilot valve, and simultaneously, the pressing sheet is fixed with the main valve body by adopting the screw, so that the fixing strength is high and the reliability is good, thereby improving the stability of the product.
Description
Technical Field
The invention relates to air-conditioning refrigeration equipment, in particular to an electronic expansion valve.
Background
The electronic expansion valve is arranged between the liquid receiver and the evaporator and is the dividing point of high pressure and low pressure of the air-conditioning refrigeration system. The function is as follows: the high pressure liquid refrigerant from the receiver is throttled to reduce pressure and the amount of liquid refrigerant entering the evaporator is regulated and controlled to accommodate changes in refrigeration compliance.
An electronic expansion valve in the prior art comprises a main valve body, a pilot valve part detachably mounted on the main valve body and a rotor assembly mounted on the pilot valve part, wherein the pilot valve part is screwed and fixed on the main valve body through threads, or a pressing sheet is directly pressed on the top of a sleeve, or a non-metal coil shell is directly pressed on the top of the sleeve, because the sleeve is a thin-wall part and cannot bear axial pressure, the sleeve is deformed, and the non-metal shell is aged due to long-term high-temperature use, has insufficient strength, causes the drop of the pilot valve, and affects the reliability and stability of the product.
Disclosure of Invention
The invention aims to solve the technical problem of providing a connecting structure of a pilot valve and a main valve body, which has high fixing strength and good reliability, thereby improving the stability of a product.
In order to solve the technical problems, the invention adopts the following technical scheme: a connecting structure of a pilot valve and a main valve body comprises a main valve body, a pilot valve part detachably arranged on the main valve body and a rotor assembly arranged on the pilot valve part, wherein a coil assembly is arranged outside the rotor assembly, the pilot valve part comprises a seat body and a thin-wall sleeve part extending upwards from the seat body, the seat body is tightly pressed and fixed on the main valve body through a pressing sheet, and the pressing sheet is fixed with the main valve body through a screw.
Preferably, the coil assembly is of an outer plastic package structure, and the pressing sheet is fixedly connected with the coil assembly.
Preferably, the pressing sheet is in a flat plate shape, the pressing sheet is provided with an upward bent section, and the upward bent section is fixed with a metal part of the coil assembly.
Preferably, the pressing sheet is provided with a downward bending section, and the downward bending section is fixed with the main valve body by screws.
Preferably, the coil assembly is fixedly connected with a fixing piece, and the fixing piece is fixed with the main valve body through a screw.
Preferably, the seat body is annular and is made of stainless steel and welded with the valve core seat into a whole.
Preferably, the top plane of the seat body is higher than the main valve body so that the pressing sheet can press and fix the seat body.
Preferably, the coil assembly comprises a coil and a plastic package body covering the coil, the plastic package body is provided with a sealing ring groove, and a sealing ring for sealing with the thin-wall sleeve part is arranged in the sealing ring groove.
Preferably, the coil assembly comprises a coil and a plastic package body covering the coil, the pressing sheet is fixed with the plastic package body, the plastic package body is provided with a sealing ring groove, and a sealing ring for sealing with the thin-wall sleeve portion is arranged in the sealing ring groove.
The invention also provides an electronic expansion valve of the vehicle air conditioning system, which is provided with the connecting structure of the pilot valve and the main valve body.
According to the technical scheme, the guide valve is not connected with the main valve body through threads, the seat body of the guide valve is directly pressed through the pressing sheet, and meanwhile, the pressing sheet is fixed with the main valve body through the screws, so that the seat body is firmly fixed on the main valve body, the fixing strength is high, the reliability is good, and the stability of a product is improved.
Drawings
The invention is further described with reference to the accompanying drawings and the detailed description below:
fig. 1 is a schematic structural diagram of an external shape of an electronic expansion valve of a vehicle air conditioning system in embodiment 1 of the present invention;
fig. 2 is a schematic sectional view of an electronic expansion valve of an air conditioning system for a vehicle according to embodiment 1 of the present invention;
FIG. 3 is a schematic cross-sectional view of a tablet according to example 1 of the present invention;
FIG. 4 is a schematic cross-sectional view of a pellet of example 2 of the present invention;
fig. 5 is a schematic cross-sectional view of an electronic expansion valve of an air conditioning system for a vehicle according to embodiment 3 of the present invention.
Detailed Description
The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims.
Embodiment 1, as shown in fig. 1 to 3, an electronic expansion valve for a vehicle air conditioning system includes a main valve body 10, a pilot valve part 11 detachably mounted on the main valve body 10, and a rotor assembly 12 mounted on the pilot valve part 11, a coil assembly 13 is disposed outside the rotor assembly 12, the pilot valve part 11 includes a seat body 111 and a thin-walled sleeve portion 113 extending upward from the seat body 111, and a valve core seat 112 is disposed between the seat body 111 and the thin-walled sleeve portion 113. The seat body 111 is used for sealing and connecting with the valve body, and the seat body 111 is annular, has an outer diameter larger than that of the thin-wall sleeve part 113 and can bear pressing force.
The seat 111 is pressed and fixed on the main valve body 10 by a pressing sheet 14, and the pressing sheet 14 is fixed with the main valve body 10 by screws. Specifically, the pressing plate 14 is a ring-shaped flat plate, the center of which is a through hole, and the circumferential direction of the through hole is a pressing part 141 which is pressed and fixed on the seat body 111, so that the seat body 111 is firmly fixed on the main valve body 10. Further, the top plane of the seat body is higher than the main valve body 10 so that the pressing sheet 14 can press and fix the seat body 111. Meanwhile, the pressing sheet 14 is provided with a downward bent section 142, and the downward bent section 142 is fixed to the main valve body 10 by using a screw.
The coil assembly 13 is fixedly connected to the main valve body 10, a fixing piece 15 is fixedly connected to a metal portion of the coil assembly 13, and the fixing piece 15 is fixed to the main valve body 10 by a screw. After the coil assembly 13 is fixed with the main valve body 10 through the fixing piece 15, the coil assembly 13 is not easy to loosen, and the stability and reliability of a product are improved.
Further, the seat body 111 is circular, and the seat body 111 is made of stainless steel and welded with the valve core seat 112 to form an integral structure.
The coil assembly 13 includes a coil 131 and a coil-covering plastic-sealed body 132, the plastic-sealed body 132 is provided with a sealing ring groove, and a sealing ring 133 is arranged in the kitchen range sealing ring groove to realize sealing with the thin-wall sleeve part 113.
Embodiment 2 is different from embodiment 1 in that a pressing piece 14 is fixedly connected with a coil assembly 13. Specifically, in this embodiment, as shown in fig. 4, the pressing sheet 14 is provided with an upward bent upper bending section 143, and the upper bending section 143 is fixed to the metal portion of the coil assembly 13, so that the fixing sheet 15 used in embodiment 1 does not need to be separately provided, thereby reducing the number of parts and processing steps and reducing the cost.
Embodiment 3 is different from embodiment 1 in that, as shown in fig. 5, the seat body 111 and the valve core seat 112 are directly processed into an integral structure, and compared with the separate structure in embodiment 1, the processing steps can be reduced, and the cost can be reduced.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A pilot valve and main valve body connection structure comprising a main valve body, a pilot valve member removably mounted to said main valve body, and a rotor assembly mounted to said pilot valve member, said rotor assembly having a coil assembly disposed externally thereof, said pilot valve member comprising a seat body and a thin-walled sleeve portion extending upwardly from the seat body, characterized in that: the pilot valve is not connected with the main valve body by threads, the seat body is tightly pressed and fixed on the main valve body by a pressing sheet, and the pressing sheet is fixed with the main valve body by a screw; the pressing sheet is provided with an upper bending section and a lower bending section, the upper bending section is bent upwards and the lower bending section is bent downwards, the upper bending section is fixed with the metal part of the coil assembly, and the lower bending section is fixed with the main valve body through screws.
2. A pilot valve and main valve body connecting structure according to claim 1, wherein: the coil assembly is of an outer plastic package structure, and the pressing sheet is fixedly connected with the coil assembly.
3. A pilot valve and main valve body connection according to claim 2, wherein: the tablet is flat.
4. A pilot valve and main valve body connecting structure according to claim 1, wherein: the seat body is annular and is made of stainless steel and is welded with the valve core seat into a whole; alternatively, the first and second electrodes may be,
the seat body and the valve core seat are directly processed into an integrated structure.
5. A pilot valve and main valve body connection according to claim 4, wherein: the top plane of the seat body is higher than the main valve body so as to be convenient for the pressing sheet to compress and fix the seat body.
6. A pilot valve and main valve body connection according to claim 1, 2 or 3, wherein: the coil assembly comprises a coil and a plastic package body for coating the coil, the plastic package body is provided with a sealing ring groove, and a sealing ring for sealing with the thin-wall sleeve part is arranged in the sealing ring groove.
7. A pilot valve and main valve body connecting structure according to claim 1, wherein: the coil assembly comprises a coil and a plastic package body for coating the coil, the pressing sheet is fixed with the plastic package body, the plastic package body is provided with a sealing ring groove, and a sealing ring for sealing with the thin-wall sleeve part is arranged in the sealing ring groove.
8. An electronic expansion valve of a vehicle air conditioning system is characterized in that: a pilot valve and main valve body connection as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611079533.9A CN108119699B (en) | 2016-11-30 | 2016-11-30 | Pilot valve and main valve body connecting structure and electronic expansion valve of automotive air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611079533.9A CN108119699B (en) | 2016-11-30 | 2016-11-30 | Pilot valve and main valve body connecting structure and electronic expansion valve of automotive air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108119699A CN108119699A (en) | 2018-06-05 |
| CN108119699B true CN108119699B (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611079533.9A Active CN108119699B (en) | 2016-11-30 | 2016-11-30 | Pilot valve and main valve body connecting structure and electronic expansion valve of automotive air conditioning system |
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| Country | Link |
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| CN (1) | CN108119699B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701356A (en) * | 2018-07-09 | 2020-01-17 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| US11686512B2 (en) | 2018-07-20 | 2023-06-27 | Zhejiang Sanhua Intelligent Controls Co., Ltd | Electronic expansion valve, manufacturing method thereof, and thermal management assembly |
| CN110735958A (en) * | 2018-07-20 | 2020-01-31 | 杭州三花研究院有限公司 | electronic expansion valve and thermal management assembly |
| CN110873193B (en) * | 2018-08-29 | 2022-05-13 | 盾安环境技术有限公司 | Electronic expansion valve |
| WO2020108617A1 (en) * | 2018-11-30 | 2020-06-04 | 浙江三花智能控制股份有限公司 | Eletromagnetic coil, mold, and electromagnetic coil manufacturing method |
| US20230160497A1 (en) * | 2020-03-16 | 2023-05-25 | Hangzhou Sanhua Research Institute Co., Ltd. | Electric valve and assembly method therefor |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003042325A (en) * | 2001-07-26 | 2003-02-13 | Saginomiya Seisakusho Inc | Electric valve, driving device thereof, and refrigerating cycle device |
| CN2913772Y (en) * | 2006-04-19 | 2007-06-20 | 浙江盾安精工集团有限公司 | Joint positioning structure for electronic expansion valve stator coil and valve body |
| CN101338826A (en) * | 2007-07-02 | 2009-01-07 | 浙江三花制冷集团有限公司 | Electromagnetic valve main valve and pilot valve link construction |
| CN101504232A (en) * | 2009-03-12 | 2009-08-12 | 浙江盾安禾田金属有限公司 | Valve body and coil coupling structure of electronic expansion valve and electronic expansion valve |
| CN201661749U (en) * | 2010-02-09 | 2010-12-01 | 浙江盾安禾田金属有限公司 | Coil connection structure and electronic expansion valve |
| CN201891900U (en) * | 2010-11-10 | 2011-07-06 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN104344050A (en) * | 2013-07-25 | 2015-02-11 | 浙江三花汽车零部件有限公司 | Electronic expansion valve |
| CN203687476U (en) * | 2013-10-30 | 2014-07-02 | 浙江盾安禾田金属有限公司 | Coil connecting mechanism and electronic expansion valve |
| TW201533360A (en) * | 2014-02-26 | 2015-09-01 | Neocene Technology Co Ltd | Mounting structure of electronic expansion valve |
| CN204201230U (en) * | 2014-09-15 | 2015-03-11 | 浙江三花股份有限公司 | A kind of chiller plant and electric expansion valve thereof |
| CN205371762U (en) * | 2016-01-19 | 2016-07-06 | 瑞立集团瑞安汽车零部件有限公司 | Lightweight solenoid valve |
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2016
- 2016-11-30 CN CN201611079533.9A patent/CN108119699B/en active Active
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| CN108119699A (en) | 2018-06-05 |
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