CN108730600B - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN108730600B CN108730600B CN201810383676.1A CN201810383676A CN108730600B CN 108730600 B CN108730600 B CN 108730600B CN 201810383676 A CN201810383676 A CN 201810383676A CN 108730600 B CN108730600 B CN 108730600B
- Authority
- CN
- China
- Prior art keywords
- connecting part
- connection
- stator
- contact
- stator shell
- 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.)
- Active
Links
- 238000004382 potting Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply 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
-
- 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
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- 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 relates to an electronic expansion valve, which comprises a valve body, a coil and an insulating layer, wherein the coil comprises a positioning sheet, a stator shell and an insulating layer wrapped on the outer side of the stator shell, the positioning sheet comprises a first connecting part and a second connecting part, the first connecting part is provided with an arc-shaped contact surface matched with the arc surface of the stator shell in shape, and the contact surface is welded and fixed with the stator shell, the second connecting part is L-shaped, one end of the second connecting part is connected with the first connecting part, two sides of the first connecting part extend beyond the width of the second connecting part, and the first connecting part and the second connecting part form a T-shaped connecting structure.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an electronic expansion valve.
Background
Please refer to fig. 3 and 3-2 of CN201110288324.6, the clip has a L-shaped structure, and includes a positioning flat-plate portion matching with the valve body and an insertion flat-plate portion inserted into the first positioning groove.
From the above structure of CN201110288324.6, it can be seen that: when the raised tongue piece is lapped with the shell of the coil, the raised tongue piece is actually a small plane and is in line contact with an arc surface, the contact resistance of the raised tongue piece is very large, the structure of the raised tongue piece is only guaranteed to be in contact with the coil by virtue of the pretightening force of the stamping angle of the folded edge, and hidden troubles exist in long-term use.
Disclosure of Invention
The invention aims to provide an electronic expansion valve which is simple in structure and high in reliability.
To solve the above technical problem, as an aspect of the present invention, there is provided an electronic expansion valve including: a valve body; the coil comprises a positioning sheet, a stator shell and an insulating layer wrapped outside the conductive connection stator shell, wherein the conductive connection positioning sheet comprises a first connecting portion and a second connecting portion, the first connecting portion is used for being in conductive connection with the conductive connection stator shell, the second connecting portion is used for being in conductive connection with the conductive connection valve body, the first connecting portion is in arc-shaped contact surface matched with the arc surface of the conductive connection stator shell, and the conductive connection contact surface is welded and fixed with the conductive connection stator shell.
Further, the conductive connection insulating layer has a cavity exposing a portion of the conductive connection stator housing, and the conductive connection first connection portion is located in the conductive connection cavity.
Further, the conductive connection first connection portion is welded to a portion of the conductive connection stator housing.
Further, the conductive connection coil further includes a potting filled in the conductive connection chamber.
Further, the conductive connection second connection portion is L-shaped, and one end of the conductive connection second connection portion is connected with the conductive connection first connection portion.
Further, a protruding contact is formed on the other end of the conductive connection second connection portion, and the conductive connection contact is located on a side of the conductive connection second connection portion facing the conductive connection first connection portion.
The first connecting part has a shape matched with the outer surface of the stator shell, so that the contact surface of the first connecting part can be in close contact with the stator shell, and the contact surface between the first connecting part and the stator shell is increased, thereby effectively improving the contact area between the positioning sheet and the stator shell, ensuring the reliable contact between the positioning sheet and the stator shell, and having the characteristics of simple structure and low cost.
Drawings
Fig. 1 schematically shows a structural view of an electronic expansion valve in the present invention;
FIG. 2 is a schematic view of the structure of the spacer; and
fig. 3 schematically shows a top view of fig. 2.
Reference numbers in the figures: 10. a valve body; 20. a coil; 21. positioning plates; 22. a stator housing; 23. an insulating layer; 24. a first connection portion; 25. a second connecting portion; 26. an encapsulation part; 27. a contact; 28. a stator plate; 30. a fixing frame.
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.
Referring to fig. 1 to 3, the present invention provides an electronic expansion valve, including: a valve body 10; the coil 20 comprises a positioning sheet 21, a stator housing 22 and an insulating layer 23 wrapped on the outer side of the stator housing 22, the positioning sheet 21 comprises a first connecting portion 24 used for being in conductive connection with the stator housing 22 and a second connecting portion 25 used for being in conductive connection with the valve body 10, the first connecting portion 24 is provided with a contact surface matched with the arc surface of the stator housing 22 in shape, the contact surface is arc-shaped, and the contact surface is welded and fixed with the stator housing 22. Preferably, the contact surface is pre-stamped. Obviously, the contact surface may have other shapes as long as it can be fitted with the outer surface of the stator housing 22 to ensure that the contact surface is in close contact with the outer surface of the stator housing 22. Preferably, the coil 20 also includes a stator plate 28.
The first connecting part 24 in the invention has a shape matched with the outer surface of the stator shell 22, so that the contact surface of the first connecting part 24 can be in close contact with the stator shell 22, and the contact surface between the first connecting part and the stator shell is increased, thereby effectively improving the contact area between the positioning sheet 21 and the stator shell, ensuring the reliable contact between the positioning sheet and the stator shell, and having the characteristics of simple structure and low cost.
In a preferred embodiment, more specifically, the insulating layer 23 has a cavity exposing a portion of the stator housing 22, and the first connection portion 24 is located in the cavity. In particular, the cavity may be formed during injection molding of the stator housing to form the insulation layer 23.
Preferably, the first connection portion 24 is fixedly connected with a portion of the stator housing 22. For example, the first connection portion 24 is welded to a portion of the stator housing 22, thereby forming a fixed connection. After the first connecting portion 24 is inserted into the cavity and the positioning plate and the stator housing are ensured to be in a fitting state, the first connecting portion 24 and the stator housing may be welded together by using a method such as laser welding.
The grounding structure shown in the background art is directly exposed in the air, and the grounding effect is affected by rusting of the part after long-term use. To this end, the coil 20 preferably also includes a potting 26 filled within the chamber. In this way, after the positioning sheet is welded, the positioning sheet can be encapsulated by using a material such as epoxy resin, so that the coil can be prevented from being rusted after being used for a long time.
Preferably, the second connecting portion 25 has an L shape in one embodiment, and one end of the second connecting portion 25 is connected to the first connecting portion 24. thus, the first connecting portion and the second connecting portion form a T-shaped like connecting structure, and by this L shape, the second connecting portion 25 can extend from the chamber to the outside and form a bent structure toward the valve body to be electrically connected to the valve body.
Preferably, the other end of the second connection portion 25 is formed with a protruding contact 27, and the contact 27 is located on the side of the second connection portion 25 facing the first connection portion 24. Preferably, the contact 27 has a protruding spherical surface. By using the contact 27, the contact 27 can be clamped in the positioning hole in the fixing frame 30, so that the conductive connection between the contact and the fixing frame is realized.
The coil can realize grounding of the internal structure of the coil through the positioning sheet, and the positioning sheet is welded with the stator shell, so that the reliability can be ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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 (2)
1. An electronic expansion valve comprising:
a valve body (10);
a coil (20) comprising a positioning sheet (21), a stator housing (22) and an insulating layer (23) wrapped outside the stator housing (22), the positioning sheet (21) comprising a first connecting portion (24) for electrically connecting with the stator housing (22) and a second connecting portion (25) for electrically connecting with the valve body (10),
it is characterized in that the preparation method is characterized in that,
the first connecting part (24) is provided with a contact surface which is matched with the arc surface of the stator shell (22) in shape, the contact surface is arc-shaped, the contact surface is welded and fixed with the stator shell (22),
the second connection part (25) is L-shaped, one end of the second connection part (25) is connected with the first connection part (24), two sides of the first connection part extend beyond the width of the second connection part, the first connection part and the second connection part form a T-shaped connection structure, the insulation layer (23) is provided with a cavity which enables a part of the stator shell (22) to be exposed outside, and the coil (20) further comprises a potting part (26) filled in the cavity.
2. An electronic expansion valve according to claim 1, wherein a protruding contact (27) is formed on the other end of the second connection portion (25), the contact (27) being located on the side of the second connection portion (25) facing the first connection portion (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810383676.1A CN108730600B (en) | 2013-10-15 | 2013-10-15 | Electronic expansion valve |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310483581.4A CN104565475B (en) | 2013-10-15 | 2013-10-15 | Electric expansion valve |
| CN201810383676.1A CN108730600B (en) | 2013-10-15 | 2013-10-15 | Electronic expansion valve |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310483581.4A Division CN104565475B (en) | 2013-10-15 | 2013-10-15 | Electric expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108730600A CN108730600A (en) | 2018-11-02 |
| CN108730600B true CN108730600B (en) | 2020-08-04 |
Family
ID=53082218
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310483581.4A Active CN104565475B (en) | 2013-10-15 | 2013-10-15 | Electric expansion valve |
| CN201810383220.5A Active CN108626470B (en) | 2013-10-15 | 2013-10-15 | Electronic expansion valve |
| CN201810383676.1A Active CN108730600B (en) | 2013-10-15 | 2013-10-15 | Electronic expansion valve |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310483581.4A Active CN104565475B (en) | 2013-10-15 | 2013-10-15 | Electric expansion valve |
| CN201810383220.5A Active CN108626470B (en) | 2013-10-15 | 2013-10-15 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN104565475B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662151B (en) * | 2017-03-28 | 2022-05-17 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and refrigeration system with same |
| CN109780301B (en) * | 2017-11-15 | 2022-06-17 | 浙江盾安机械有限公司 | Coil and expansion valve for valve |
| CN110159820B (en) * | 2018-02-11 | 2022-03-25 | 盾安汽车热管理科技有限公司 | Electronic expansion valve |
| CN111765289B (en) * | 2019-04-02 | 2021-12-07 | 盾安环境技术有限公司 | Coil component and electronic expansion valve with same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2627868B2 (en) * | 1994-05-18 | 1997-07-09 | 太平洋工業株式会社 | Motorized valve |
| CN101930821B (en) * | 2009-06-25 | 2012-11-14 | 浙江三花股份有限公司 | Electromagnetic coil device |
| CN102042416B (en) * | 2009-10-09 | 2012-11-21 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN101799087A (en) * | 2010-02-09 | 2010-08-11 | 浙江盾安禾田金属有限公司 | Coil connecting structure and electronic expansion valve |
| CN103016821B (en) * | 2011-09-26 | 2014-12-03 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN103307339B (en) * | 2012-03-09 | 2015-06-10 | 浙江盾安禾田金属有限公司 | Positioning and connecting structure for valve body of electronic expansion valve for air conditioner and coil |
| JP5994302B2 (en) * | 2012-03-14 | 2016-09-21 | 株式会社不二越 | Manufacturing method of solenoid valve |
| JP6064114B2 (en) * | 2012-03-22 | 2017-01-25 | 株式会社テージーケー | Expansion valve |
| CN202674473U (en) * | 2012-07-24 | 2013-01-16 | 浙江盾安禾田金属有限公司 | Positioning connecting structure for valve body and coil of electronic expansion valve of air conditioner |
| CN203132229U (en) * | 2013-02-28 | 2013-08-14 | 浙江三花股份有限公司 | Control valve |
-
2013
- 2013-10-15 CN CN201310483581.4A patent/CN104565475B/en active Active
- 2013-10-15 CN CN201810383220.5A patent/CN108626470B/en active Active
- 2013-10-15 CN CN201810383676.1A patent/CN108730600B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108626470A (en) | 2018-10-09 |
| JP3193048U (en) | 2014-09-11 |
| CN104565475A (en) | 2015-04-29 |
| CN104565475B (en) | 2018-11-16 |
| CN108730600A (en) | 2018-11-02 |
| CN108626470B (en) | 2020-09-08 |
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