CN206874939U - Electric expansion valve - Google Patents
Electric expansion valve Download PDFInfo
- Publication number
- CN206874939U CN206874939U CN201720377593.2U CN201720377593U CN206874939U CN 206874939 U CN206874939 U CN 206874939U CN 201720377593 U CN201720377593 U CN 201720377593U CN 206874939 U CN206874939 U CN 206874939U
- Authority
- CN
- China
- Prior art keywords
- valve
- screw rod
- wear
- resistant coating
- valve element
- 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
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
Abstract
A kind of electric expansion valve, including valve member and stator component；Valve member includes valve component, valve element, screw-driven component and rotor, and valve component is provided with valve port, and valve element can control the aperture of valve port under the drive of screw-driven component；Screw-driven component includes screw rod and nut, screw rod is fixedly connected with the rotor, screw rod drives valve core movement, nut is mutually fixed with fixed part in valve component, screw rod includes external thread part, nut includes internal thread part, and external thread part and the internal thread part screw thread coordinate, and at least one of external thread part and internal thread part are coated with wear-resistant coating；Abrasion is so advantageously reduced, improves service life.
Description
【Technical field】
It the utility model is related to a kind of flow control valve, and in particular to a kind of electric expansion valve.
【Background technology】
In refrigeration systems, electric expansion valve is mainly used in adjusting the flow of refrigerant.With to flow control accuracy
It is required that raising, electric expansion valve gradually be applied to automotive air-conditioning system, heat pump and battery cooling system in.
Electric expansion valve is during operation, and there is abrasion and frictional resistance between the parts of each relative motion
Situation, and then cause the service life of electric expansion valve and efficiency to be affected.
Therefore, it is necessary to existing technology is improved, to solve above technical problem.
【Utility model content】
The purpose of this utility model is to provide a kind of electric expansion valve, between the part for advantageously reducing relative motion
Friction, and then improve its service life.
To achieve the above object, the utility model adopts the following technical scheme that：A kind of electric expansion valve, including valve member and
Stator component；The valve member includes valve component, valve element, screw-driven component and rotor, and the valve component is provided with
Valve port, the valve element can control the aperture of the valve port under the drive of the screw-driven component；The screw-driven group
Part includes screw rod and nut, and the screw rod is fixedly connected with the rotor, and the screw rod drives the valve core movement, the nut
Mutually fixed with fixed part in the valve component, the screw rod includes external thread part, and the nut includes internal thread
Portion, the external thread part and the internal thread part screw thread coordinate, the coating of one of at least described external thread part and the internal thread part
There is wear-resistant coating.
Compared with prior art, the utility model passes through the external thread part of the screw-driven component in electric expansion valve and interior
The contact site wear-resistant coating of threaded portion, be advantageous to reduce because of abrasion caused by relative motion, be advantageous to reduce frictional resistance,
And be advantageous to improve the service life of electric expansion valve.
【Brief description of the drawings】
Fig. 1 is a cross section structure schematic diagram of the first embodiment of electric expansion valve of the present utility model；
Fig. 2 is the combining structure schematic diagram of the parts thereof in Fig. 1；
Fig. 3 is the combining structure schematic diagram of valve seat and nut in Fig. 2；
Fig. 4 is the combining structure schematic diagram of valve element and screw rod and rotor in Fig. 2；
Fig. 5 is the structural representation of screw rod in Fig. 2；
Fig. 6 is the structural representation of valve element in Fig. 2.
【Embodiment】
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
In refrigeration systems, electric expansion valve is used for controlling the flow of refrigerant, is reached by the regulation to refrigerant flow
To the control action to system overheat degree, electric expansion valve is to control aperture to control the flow of refrigerant based on electric signal.For
The field such as control accuracy, automotive air-conditioning system, heat pump and battery cooling system for improving flow gradually uses electronics
Expansion valve is as restricting element.
Referring to Fig. 1, in the present embodiment, electric expansion valve 100 includes valve member 10 and stator component 20, stator component 20 with
Valve member 10 is fixedly connected；Valve member 10 includes valve component 1, valve element 2, screw-driven component 3 and rotor 4, valve component 1
Valve port is provided with, valve element 2 can control the aperture of valve port under the drive of screw-driven component 3；Screw-driven component 3 includes spiral shell
Bar 31 and nut 32, screw rod 31 are connected with rotor 4, and screw rod 31 moves with movable valve plug 2, nut 32 with it is fixed in valve member 10
Part mutually fix, screw rod 31 and the screw thread of nut 32 coordinate, and screw rod 31 moves relative to nut 32, and then with movable valve plug about 2
It is mobile, and then control the aperture of valve port.At least the contact surface of one of part of relative motion is coated with wear-resistant coating, wear-resistant coating
By spray coating, the material of wear-resistant coating is to include molybdenum disulfide material and polytetrafluoroethylmaterial material, and wear-resistant coating thickness is 5
To 8 microns, the coating of such material, wearability is equal and reaches rational scope into instinct, the wear-resistant coating so set
Advantageously reduce the abrasion of the part of relative motion and play a part of lubricating and reducing frictional resistance, lubricated relative to using
Oil, wear-resistant coating more will not can improve uniformly and preferably wearability with pressure change, be advantageous to improve the portion of relative motion
The service life of part, and then improve the service life of electric expansion valve.
In the present embodiment, valve component 1 includes valve seat 11 and valve body 12, and valve port forms in valve seat 11, circulation passage into
For shape in valve body 12, valve element 2 changes the flow of the working media of circulation passage, valve seat 11 and valve by controlling the aperture of valve port
Main body 12 is formed separately and is fixedly connected, and is so advantageous to simplify the forming technology of valve body.
In the present embodiment, the part of relative motion comprises at least the external thread part 312 of screw rod 31 and the internal thread of nut 32
Portion 323, valve seat 11 valve port at valve element 2, valve element 2 and nut 32, the relative motion face of at least one of which part is coated with
Wear-resistant coating, for wear-resistant coating by spray coating, the material of wear-resistant coating is to include molybdenum disulfide material and polytetrafluoroethylene (PTFE) material
Material, wear-resistant coating thickness are 5 to 8 microns, and the coating of such material, wearability is equal and reaches rational scope into instinct.
In the present embodiment, screw rod 31 and valve element 2 are coated with wear-resistant coating, naturally it is also possible in corresponding part wear-resistant coating.
With reference to referring to Fig. 1, Fig. 2 and Fig. 3, in the present embodiment, nut 32 is fixedly connected with valve seat 11, valve seat 11 and valve master
Body 12 is fixedly connected, and relative to the part of the fixation of valve body 1, i.e. valve seat 11 is fixedly connected nut 32.Nut 32 includes madial wall
321, madial wall 321 includes 324 3 sections of at least upper guide part 322, internal thread part 323 and lower guide part, and madial wall 321 is formed
Nut intracavity 325, bore of the nut intracavity 325 at upper guide part 322 are more than bore at internal thread part 323, in nut
Bore of the chamber at internal thread part 323 is more than the bore at lower guide part 324, and upper guide part 322 is used for the guiding of screw rod 31,
Internal thread part 323 is threadedly coupled with the external thread part 312 of screw rod, and lower guide part 324 is used for the guiding of valve element 2, in the upper of nut
324 3 sections of guide part 322, internal thread part 323 and lower guide part can be coated with wear-resistant coating, can so improve nut
32 wearability at three sections, be advantageous to improve the service life of nut 32.In order to improve the manufacturability of the coating of nut 32, also may be used
With by the even application wear-resistant coating of madial wall 321 of nut.Can certainly be in the upper guide part 322 of corresponding nut, internal thread
The correspondence position wear-resistant coating of the screw rod and valve element of 324 3 sections of portion 323 and lower guide part.
With reference to referring to Fig. 2, Fig. 4 and Fig. 5, screw rod 31 includes rotor fixed part 311, external thread part 312 and valve element and connected
Socket part 313, rotor fixed part 311 and the injection of rotor 4 of screw rod 31 are fixed, in the present embodiment, rotor fixed part 311 and external screw thread
Portion 312 is arranged at the periphery of screw rod 31, and valve element fixed part 313 is connected with valve element 2, and external thread part 312 is coated with wear-resistant coating, carries
The wearability of high screw rod, the service life of screw rod is improved, and then improve the service life of electric expansion valve；In rotor fixed part
The outer peripheral face of screw rod 31 between 311 and external thread part 312 is coated with wear-resistant coating, so in screw rod and the upper guide part of nut
During relative motion, the wearability of screw rod can be improved；Can certainly nut upper guide part wear-resistant coating, screw rod turn
Outer peripheral face is not coated by wear-resistant coating, or nut guide part and screw rod in rotor between sub- fixed part 311 and external thread part 312
Outer peripheral face between fixed part 311 and external thread part 312 is coated with wear-resistant coating.
Include first end 21, the second end 22 and main part 23 with reference to referring to Fig. 6, valve element 2, first end 21 is close
And including first end, the second end 22 is close and is connected including second end, first end 21 with screw rod 31, the second end 22
For controlling the aperture of valve port, main part 23 is arranged between first end 21 and the second end 22；Portion body portion 23 and spiral shell
The lower guide part 324 of mother 32 is oppositely arranged, first end 21, the second end 22 and main part 23 it is right with lower guide part 324
The part answered is coated with wear-resistant coating, conveniently can also be by the whole of valve element of course for coating to increase the wearability of valve element
Individual surface wear-resistant coating；Can certainly with first end 21, the second end 22 and main part 23 and lower guiding
The corresponding screw rod of the part of portion 324, the position wear-resistant coating of valve seat, or first end 21, the second end 22 and master
Body portion 23 is coated with wear-resistant coating with the lower part of guide part 324 and the position of corresponding screw rod and valve seat.
In present embodiment, referring to Fig. 1, Fig. 2 and Fig. 4, valve member 10 includes adapter sleeve 6, and screw rod 31 passes through with valve element 2
Adapter sleeve 6 is spacing.The first end 21 of valve element 2 includes annular groove 211, flange part 212, stage portion 213 and first end
214, annular groove 211 is formed between flange part 212 and stage portion 213, the diameter of annular groove 211 is less than stage portion 213
Diameter, the diameter of flange part 212 are more than the diameter of stage portion, and the bore of adapter sleeve 6 is more than the diameter of stage portion 213, adapter sleeve 6
Bore be less than the diameter of flange part 212, annular groove 211 is used to house adapter sleeve 6, and flange part 212 limits adapter sleeve to the
One end 214 is moved, and adapter sleeve 6 is sheathed on the periphery of valve element from the second end and is placed in annular groove 211, then adapter sleeve
6 are pressed and are interference fitted with screw rod 31, and then adapter sleeve 6 is fixedly connected with screw rod 31, and wherein valve element 2 is corresponding with adapter sleeve 6
Annular groove 211 and flange part 212 be coated with wear-resistant coating, can so improve the wearability of valve element 2, improve valve element 2
Service life；Can certainly in the position wear-resistant coating of adapter sleeve 6 corresponding with annular groove 211 and flange part 212,
Or the annular groove 211 corresponding with adapter sleeve 6 of valve element 2 and the position of flange part 212 and corresponding adapter sleeve 6 it is equal
Wear-resistant coating.
In the present embodiment, spring 7 is provided between screw rod 31 and valve element 2, screw rod 31 is formed with screw rod inner chamber 314, valve element 2
First end 214 stretch into screw rod inner chamber 314, first end 214 contacts setting with spring 7, and flange part 212 passes through spring
7 are pressed on the end face of adapter sleeve 6, and the spring 7 so set can play slow when the second end 22 of valve element 2 contacts with valve seat 11
The effect of punching, valve element is protected, improve the service life of valve element；First end 214 is coated with wear-resistant coating, can so reduce
Friction between one end and spring, valve element 2 is reduced with the rotation of spring 7, further reduces valve element 2 relative to valve seat 11
Impact at valve port, improve the service life of valve seat 11 and valve element 12.
In the present embodiment, valve component 10 also includes cover body 5, and cover body 5 isolates stator component 20 and rotor 4, stator department
Part 20 is arranged at the periphery of cover body 5, and rotor 4 is arranged at the inner chamber of cover body 5, and cover body 5 is fixedly installed with valve seat 11, so can be to prevent
Only working media contacts with stator component 20, prevents working media from corroding stator component.In the present embodiment, cover body 5 and valve seat 11
Fixed setting is so advantageous to improve sealing by being welded and fixed, naturally it is also possible to fixes otherwise, such as：Spiral shell
Line connection etc..
Electric expansion valve of the present utility model can also be other structures, and spring, valve element are provided between screw rod and valve element
Be formed with valve core cavity, spring is arranged at valve core cavity, and spring one end directly or indirectly contacts with screw rod, the other end of spring with
Valve element directly or indirectly contacts, at least spring with one of the contact site with spring of the contact site of valve element and valve element coated with resistance to
Mill coating and/or at least spring are coated with wear-resisting painting with one of the contact site with spring of the contact site of screw rod and screw rod
Layer.
It should be noted that：Above example is merely to illustrate the utility model and not limited described by the utility model
Technical scheme, although this specification has been carried out being described in detail with reference to the above embodiments to the utility model, this
Field it is to be appreciated by one skilled in the art that person of ordinary skill in the field still can modify to the utility model
Or equivalent substitution, and all do not depart from technical scheme and its improvement of spirit and scope of the present utility model, all should cover
In right of the present utility model.
Claims (12)
1. a kind of electric expansion valve, including valve member and stator component；The valve member includes valve component, valve element, screw thread and passed
Dynamic component and rotor, the valve component are provided with valve port, and the valve element can under the drive of the screw-driven component
Control the aperture of the valve port；It is characterized in that：The screw-driven component includes screw rod and nut, the screw rod with described turn
Son is fixedly connected, and the screw rod drives the valve core movement, the nut and fixed part phase in the valve component
Fixed, the screw rod includes external thread part, and the nut includes internal thread part, the external thread part and the internal thread part screw thread
Coordinate, one of at least described external thread part and the internal thread part are coated with wear-resistant coating.
2. electric expansion valve according to claim 1, it is characterised in that：The nut also includes lower guide part, under described
Guide part is arranged at below the internal thread part, and the bore of the lower guide part is less than the bore of the internal thread part, under described
Guide part is used for the motion guide to the valve element, and at least described lower guide part corresponds to the lower guide part with the valve element
One of the outer surface of part be coated with the wear-resistant coating.
3. electric expansion valve according to claim 2, it is characterised in that：The nut also includes madial wall, the inner side
Wall forms the nut intracavity, and the internal thread part and the lower guide part form in the madial wall, and the madial wall is also
The upper guide part run through including the screw rod, the lower guide part and the upper guide part are located at the two of the internal thread part respectively
Side, the bore of the upper guide part are more than the bore of the internal thread part, and the upper guide part is coated with the wear-resistant coating.
4. according to the electric expansion valve described in any one of claim 2 to 3, it is characterised in that：The valve member also includes connection
By the adapter sleeve relative limit, the screw rod is interference fitted with the adapter sleeve, described for set, the screw rod and the valve element
Screw rod sets limiting section, and the adapter sleeve is arranged at the limiting section, the portion contacted with the adapter sleeve of at least described valve element
One of position and the part contacted with the valve element of the adapter sleeve are coated with the wear-resistant coating.
5. electric expansion valve according to claim 4, it is characterised in that：It is additionally provided between the screw rod and the valve element
Spring, the spring directly or indirectly contact setting with the screw rod and the valve element respectively, at least described valve element with it is described
The position that the position of spring contact and the spring contact with the valve element is coated with the wear-resistant coating.
6. electric expansion valve according to claim 5, it is characterised in that：The screw rod includes screw rod madial wall, described interior
Side wall is around screw rod inner chamber is formed, and the spring is arranged at the screw rod inner chamber, and the spring one end contacts with the screw rod, institute
State the other end of spring and the top contact of the valve element, the contact site with the top of the valve element of at least described spring and institute
State one of top of valve element and be coated with the wear-resistant coating.
7. electric expansion valve according to claim 5, it is characterised in that：The valve element is provided with valve core cavity, the bullet
Spring is arranged at the valve core cavity, and the spring one end directly or indirectly contacts with the screw rod, the other end of the spring with
The valve element directly or indirectly contacts, at least described spring with the contact site of the valve element and the valve element and the spring
One of contact site contact site with the screw rod and the screw rod coated with the wear-resistant coating or at least described spring
Be coated with the wear-resistant coating with one of the contact site of the spring.
8. the electric expansion valve according to claim 6 or 7, it is characterised in that：The screw rod includes fixing with the rotor
Rotor fixed part, the outer surface of the screw rod below the rotor fixed part coats the wear-resistant coating.
9. electric expansion valve according to claim 4, it is characterised in that：At least described valve element with the institute at the valve port
State the contact of valve component position and the valve component at the valve port one of with the position of contact of the valve element
Coated with the wear-resistant coating.
10. according to the electric expansion valve described in claim 1 or 2 or 3 or 5 or 6 or 7 or 9, it is characterised in that：The wear-resisting painting
Layer is coated by way of spraying, and the wear-resistant coating thickness is 5 to 8 microns, and the material of the wear-resistant coating includes two
Material molybdenum sulfide and polytetrafluoroethylmaterial material.
11. electric expansion valve according to claim 4, it is characterised in that：The wear-resistant coating is entered by way of spraying
Row coating, the wear-resistant coating thickness are 5 to 8 microns, and the material of the wear-resistant coating includes molybdenum disulfide material and polytetrafluoro
Vinyl material.
12. electric expansion valve according to claim 8, it is characterised in that：The wear-resistant coating is entered by way of spraying
Row coating, the wear-resistant coating thickness are 5 to 8 microns, and the material of the wear-resistant coating includes molybdenum disulfide material and polytetrafluoro
Vinyl material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720377593.2U CN206874939U (en) | 2017-04-12 | 2017-04-12 | Electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720377593.2U CN206874939U (en) | 2017-04-12 | 2017-04-12 | Electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206874939U true CN206874939U (en) | 2018-01-12 |
Family
ID=61343587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720377593.2U Active CN206874939U (en) | 2017-04-12 | 2017-04-12 | Electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206874939U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018188500A1 (en) * | 2017-04-12 | 2018-10-18 | 杭州三花研究院有限公司 | Electronic expansion valve |
| 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 |
| CN111059296A (en) * | 2018-10-17 | 2020-04-24 | 浙江盾安禾田金属有限公司 | 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 |
-
2017
- 2017-04-12 CN CN201720377593.2U patent/CN206874939U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018188500A1 (en) * | 2017-04-12 | 2018-10-18 | 杭州三花研究院有限公司 | Electronic expansion valve |
| EP3611409A4 (en) * | 2017-04-12 | 2021-01-20 | Hangzhou Sanhua Research Institute Co., Ltd. | Electronic expansion valve |
| US11703258B2 (en) | 2017-04-12 | 2023-07-18 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electronic expansion valve |
| 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 |
| US11686512B2 (en) | 2018-07-20 | 2023-06-27 | Zhejiang Sanhua Intelligent Controls Co., Ltd | Electronic expansion valve, manufacturing method thereof, and thermal management assembly |
| CN111059296A (en) * | 2018-10-17 | 2020-04-24 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN111059296B (en) * | 2018-10-17 | 2022-02-08 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206874939U (en) | Electric expansion valve | |
| CN108692042A (en) | Electric expansion valve | |
| JP2023551273A (en) | Electronic expansion valve and cooling equipment | |
| CN203176393U (en) | Valve stem and valve core assembly and valve having the assembly | |
| CN204922148U (en) | Main oil gallery voltage limiting valve | |
| CN204729286U (en) | The oil pump of automatic speed regulation | |
| CN107461503A (en) | A kind of special regulating valve of HTHP | |
| CN210106693U (en) | Overflow valve suitable for injection molding machine | |
| CN208535252U (en) | Low leakage flow proportional control valve and oil pump solenoid valve with the control valve | |
| CN109458464B (en) | Electronic expansion valve | |
| CN112524113A (en) | Hydraulic pressure stabilizing valve | |
| CN204226756U (en) | A kind of check valve structure of fuel pump | |
| CN201027639Y (en) | Electric oil pump for hydraulic turnover mechanism of steering room | |
| CN103256270A (en) | Pedal pilot valve | |
| CN104315322B (en) | A kind of automatic greasing machine for hydraulic pressure separating bearing | |
| CN113623400B (en) | Enclasping force adjustable rubber sealing structure based on magnetic control shape memory effect | |
| CN215214880U (en) | Special thin electric three-way ball valve for blast furnace | |
| CN205206899U (en) | Roller formula hydraulic tappet and have its aviation piston engine | |
| CN203823090U (en) | Novel flow regulating valve for turbonator bearing | |
| CN106439101B (en) | A kind of automobile engine oil control valve | |
| CN220566701U (en) | Valve rod protection mechanism of regulating valve | |
| CN203272308U (en) | Pedal pilot valve | |
| CN207673527U (en) | A kind of multifunction electronic pressure controller | |
| CN219262838U (en) | Novel valve needle driving cylinder with adjustable linear travel | |
| CN205780963U (en) | A kind of stop valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210114 Address after: 312500 Zhejiang Shaoxing Xinchang County Qixing street Liquan Patentee after: ZHEJIANG SANHUA INTELLIGENT CONTROLS Co.,Ltd. Address before: 310018 no.289-2, No.12 street, Xiasha Economic Development Zone, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Sanhua Research Institute Co.,Ltd. |