CN206268472U - A kind of electric expansion valve - Google Patents
A kind of electric expansion valve Download PDFInfo
- Publication number
- CN206268472U CN206268472U CN201621146633.4U CN201621146633U CN206268472U CN 206268472 U CN206268472 U CN 206268472U CN 201621146633 U CN201621146633 U CN 201621146633U CN 206268472 U CN206268472 U CN 206268472U
- Authority
- CN
- China
- Prior art keywords
- valve
- insert body
- spring housing
- electric expansion
- 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.)
- Expired - Fee Related
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
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses a kind of electric expansion valve, including valve seat, spring housing, valve element, drive device, the spring housing is connected with first side of axial direction of valve seat, second side of axial direction of the valve seat is provided with valve port, the valve element includes the back-moving spring being connected with insert body through the insert body of spring housing and in spring housing, the drive device drives insert body action to realize the keying of valve port, connection valve element body first end and the second end are offered on the insert body so that the balance hole path of the refrigerant pressure balance in cavity and cavity where the end of insert body second where insert body first end, sealing structure is provided between the insert body and spring housing.The utility model can ensure that valve element, in each cavity internal pressure balance of valve body, improves valve opening ability.
Description
Technical field
The utility model is related to operation of air conditioning systems, more particularly, to a kind of electric expansion valve.
Background technology
The speed-reduction type electronic expansion valve of prior art, when valve is in full off state, exist causes because of valve port area difference
Difference force, the difference force is further applied on screw thread and rotor, influences valve opening performance；Therefore, with valve port bore and opening
Valve pressure increases, and especially bore valve opening force deficiency, the situation of valve opening reliability reduction, influence easily occurs in the valve of more than 5mm
Product normal work.
Utility model content
Technical problem to be solved in the utility model is just to provide a kind of electric expansion valve, it is to avoid the hypodynamic feelings of valve opening
Condition occurs, and improves valve opening reliability.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that：A kind of electric expansion valve, including valve
Seat, spring housing, core assembly, drive device, the spring housing are connected with first side of axial direction of valve seat, and axially the of the valve seat
Two sides are provided with valve port, and the core assembly includes being connected with insert body through the insert body of spring housing and in spring housing
Flexible member, the drive device drives insert body action to realize the keying of valve port, offered on the insert body
Connection valve element body first end and the second end are so that cavity where insert body first end and cavity where the end of insert body second
The balance hole path of interior refrigerant pressure balance, sealing structure is provided between the insert body and spring housing.
Preferably, the insert body is provided with the flexible valve element guide section of guide spool body, the sealing structure sets
There is the sealing guide part that cooperation is slidingly sealed with valve element guide section.
Preferably, the balance hole path includes being opened in first balance pipe at the end of valve element second, and it is opened in
It is in the middle part of insert body and positioned at the first side of sealing structure first end, the first side chamber body of sealing structure first end and first is flat
Second balance pipe of weighing apparatus hole connection, and the flange abutted with flexible member first end of the first end of insert body is opened in,
The 3rd balance pipe of the side of insertion first and the second side is offered on the flange.
Preferably, the sealing structure includes the seal receptacle being connected with the end of spring housing second, it is provided with the seal receptacle
The valve element pilot hole being slidably matched with valve element guide section, the inner hole wall of the valve element pilot hole is provided with seal groove, the seal groove
Inside it is provided with seal.
Preferably, the aperture of the valve element pilot hole is consistent with valve port aperture.
Preferably, the insert body is made up of the poppet shaft of the first side and the valve head of the second side, the poppet shaft and
Valve head split sets and connects firmly together, and the valve head is provided with the sealing cone coordinated with sealing valve port.
Preferably, the seal receptacle is outside spring housing, the seal receptacle is provided with what is snapped in for the end of spring housing second
Step recess；Or step boss is set on seal receptacle, step boss is fitted into the endoporus of the second end of spring housing.
Preferably, the seal receptacle is inside spring housing, the second end of the spring housing is provided with and seal receptacle is carried out
The positioning rib of positioning.
Preferably, the valve element guide section is located on valve head, the sealing cone of the valve head is with valve element guide section integrally
Processing.
Preferably, the sealing structure includes the sealing directed cavity located at the end of spring housing second, on the insert body
Seal groove is set, the seal with sealing directed cavity inner wall sealing is provided with the seal groove.
The technical solution adopted in the utility model, offers balance hole path on insert body, and the balance hole path connects
Port valve core body first end and the second end, make in cavity and cavity where the end of insert body second where insert body first end
Refrigerant pressure is balanced, therefore ensure that valve element, in each cavity internal pressure balance of valve body, improves valve opening ability.
Further, since the presence of balance hole path, in order to avoid there is internal leakage, valve element guide section and sealing structure in valve
Pilot hole/chamber coordinates, and realizes being oriented to and sealing function.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and detailed description：
Fig. 1 is the structural representation of embodiment 1；
Fig. 2 is valve seat inside three-dimensional structure diagram in embodiment 1；
Fig. 3 is valve seat internal cross section structure chart in embodiment 1；
Fig. 4 is valve seat and valve seat internal breakup structure chart in embodiment 1；
Fig. 5 is the structural representation of embodiment 2；
Fig. 6 is valve seat inside three-dimensional structure diagram in embodiment 2；
Fig. 7 is valve seat internal cross section structure chart in embodiment 2；
Fig. 8 is valve seat and valve seat internal breakup structure chart in embodiment 2；
Fig. 9 is the structural representation of embodiment 3；
Figure 10 is valve seat inside three-dimensional structure diagram in embodiment 3；
Figure 11 is valve seat internal cross section structure chart in embodiment 3；
Figure 12 is valve seat and valve seat internal breakup structure chart in embodiment 3.
Specific embodiment
Specific embodiment of the utility model is explained below in conjunction with accompanying drawing.
Embodiment 1, as shown in Figures 1 to 4, a kind of electric expansion valve, including valve seat 1, spring housing 2, core assembly 3, drive
Dynamic device 5, the spring housing 2 is connected with first side of axial direction of valve seat 1, and second side of axial direction of the valve seat 1 is provided with valve port, described
Core assembly 3 includes the (tool of flexible member 33 being connected with insert body through the insert body of spring housing 2 and in spring housing
Body can use back-moving spring), the drive device 5 drives insert body action to realize the keying of valve port, the valve element sheet
Offered on body connection valve element body first end and the second end so that close valve state bottom spool body first end where cavity 101 with
The balance hole path 100 of the refrigerant pressure balance in cavity 103 where the end of insert body second, the insert body is provided with guiding
The flexible valve element guide section 321 of insert body, the spring housing 2 is provided with the sealing knot that cooperation is slidingly sealed with valve element guide section
Structure.
Spring housing 2 is sequentially provided with spring housing the first cavity 21, spring housing that diameter reduces successively from first end to the second end
Second cavity 22, the cavity 23 of spring housing the 3rd.The first cavity of valve seat 101, valve seat the second cavity 102, valve seat is provided with valve seat
Three cavitys 103, the first cavity of valve seat 101 is in spring housing 2, by insert body sealing structure separate towards the chamber of spring housing first
The region of body 21；Place spring housing inner chamber, bullet towards valve port that the second cavity of valve body 102 is separated by insert body sealing structure
Spring covers outer circumferential side and body cavity collectively constitutes cavity；After the cavity 103 of valve seat the 3rd is closed by insert body and valve port, dorsad
The region of valve port.Second side of axial direction of valve seat is provided with valve port seat 11 to form valve port.
Specifically, balance hole path 100 includes being opened in first balance pipe 311 at the end of valve element second, and it is opened in
It is in the middle part of insert body and positioned at the first side of sealing structure first end, the first side chamber body of sealing structure first end and first is flat
Second balance pipe 312 of weighing apparatus hole connection.The first end of the insert body is provided with the flange abutted with flexible member first end, institute
State the 3rd balance pipe 313 that the side of insertion first and the second side are offered on flange.First balance pipe 311, the second balance pipe 312,
3rd balance pipe 313 and the first cavity of valve seat 101 are connected, therefore insert body can be ensured in the first cavity of valve seat 101 and valve
Refrigerant pressure balance in the 3rd cavity 103 of seat.
Insert body is made up of the valve head 32 of the side of poppet shaft 31 and second of the first side, and poppet shaft 31 and the split of valve head 32 set
Put and connect firmly together, in order to the installation of valve element.Valve head 32 is provided with the valve element of sealing cone 322 coordinated with sealing valve port and is oriented to
Section 321 is located on valve head.In addition, the aperture of valve element pilot hole 41 is consistent with valve port aperture, to improve valve opening ability.
Sealing structure in the present embodiment includes the seal receptacle 4 being connected with the end of spring housing second, is provided with the seal receptacle 4
The valve element pilot hole 41 being slidably matched with valve element guide section 321, the inner hole wall of the valve element pilot hole is provided with seal groove 42, described
Seal 323 is provided with seal groove.And seal receptacle 4 is outside spring housing, and it is provided with the step snapped in for the end of spring housing second
Recess.
The setting of hole path 100 is balanced, makes cavity where insert body first end with cavity where the end of insert body second
Interior refrigerant pressure balance, is effectively reduced rotor loading power, improves exemplar valve opening ability, especially has bright on heavy caliber valve body
Aobvious advantage；The aperture of seal receptacle upper valve core pilot hole 41 can be adjusted flexibly with valve port footpath, be easy to serial expansion.
Speed-reduction type electronic expansion valve operation principle of the present utility model：Speed-reduction type electronic expansion valve is by valve body and coil group
Into valve body includes collar tube sub-assembly, rotor part 51, tooth difference speed reducing mechanism 52, screw part 53 and valve part.During work,
Rotor is rotated under the driving of external coil, and output spiral shell is passed torque to after tooth difference speed reducing mechanism deceleration force amplifier square
Convert rotational motion is linear motion with the side effect of nut seat screw thread by bar, output screw, so as to promote insert body and elasticity
Element makees axially lower operation, realizes closing valve；When rotor is reversely rotated, moved on output screw axial direction, insert body is in elasticity
Under the effect of element returns power, valve opening is realized；Because valve element balance hole path is by effect, it is ensured that valve element is in each cavity of valve body
Pressure balance, improves exemplar valve opening ability.
Embodiment 2, as shown in Fig. 5 to 8, the difference with embodiment 1 is that seal receptacle 4 is located at the cavity 23 of spring housing the 3rd
Inside, relative to the external scheme of seal receptacle 4 in embodiment 1, it is possible to reduce flow resistance.In order to carry out installing fixed to seal receptacle 4
Position, it is to avoid seal receptacle 4 is deviate from from spring housing 2, and the second end of spring housing is provided with the positioning rib positioned to seal receptacle.
In addition, poppet shaft 31 is stamping parts, processing cost is low, with cost advantage.The sealing cone 322 and valve of valve head 32
Core guide section 321 is integrally machined, and improves product axiality, prevents that interior leakage performance is more preferable.
Embodiment 3, as shown in Fig. 8 to Figure 12, the difference with embodiment 1 and embodiment 2 is that sealing structure includes spring
The sealing directed cavity 24 at the second end is covered, sealing directed cavity 24 is located at the side of the 3rd cavity of spring housing 23 second and is less than spring in diameter
Cover the 3rd cavity.Seal groove 310 is set on insert body, is provided with close with spring housing annular seal space inner wall sealing in seal groove
Sealing 323.So formed between the sealing directed cavity 24 and insert body of spring housing and be slidingly sealed, and sealing directed cavity internal diameter with
Valve port internal diameter is consistent.In the present embodiment, because seal groove is arranged on insert body, it is easy to load；Due to seal receptacle and spring
Set is structure as a whole, and can effectively ensure that valve port and spring housing pilot seal chamber axiality, improves the anti-interior leakage performance of product.
Claims (10)
1. the axial direction of a kind of electric expansion valve, including valve seat, spring housing, core assembly, drive device, the spring housing and valve seat
First side connects, and second side of axial direction of the valve seat is provided with valve port, and the core assembly includes the insert body through spring housing
And the flexible member being connected with insert body in spring housing, the drive device drives insert body action to realize valve port
Keying, it is characterised in that：Connection valve element body first end and the second end are offered on the insert body so that insert body
The balance hole path of the refrigerant pressure balance in cavity and cavity where the end of insert body second where first end, the valve element sheet
Sealing structure is provided between body and spring housing.
2. a kind of electric expansion valve according to claim 1, it is characterised in that：The insert body is provided with guide spool sheet
The flexible valve element guide section of body, the sealing structure is provided with the sealing guide part that cooperation is slidingly sealed with valve element guide section.
3. a kind of electric expansion valve according to claim 2, it is characterised in that：The balance hole path includes being opened in valve
First balance pipe at the end of core second, and be opened in the middle part of insert body and positioned at the first side of sealing structure first end, will be close
First side chamber body of seal structure first end and the second balance pipe of the first balance pipe connection, and be opened in insert body first
The flange abutted with flexible member first end at end, offers the 3rd balance of the side of insertion first and the second side on the flange
Hole.
4. a kind of electric expansion valve according to claim 3, it is characterised in that：The sealing structure includes and spring housing the
The seal receptacle of two ends connection, is provided with the valve element pilot hole being slidably matched with valve element guide section in the seal receptacle, the valve element is led
Seal groove is provided with to the inner hole wall in hole, seal is provided with the seal groove.
5. a kind of electric expansion valve according to claim 4, it is characterised in that：The aperture of the valve element pilot hole and valve port
Aperture is consistent.
6. a kind of electric expansion valve according to any one of claim 1 to 5, it is characterised in that：The insert body is by
The valve head composition of the poppet shaft of side and the second side, the poppet shaft and valve head split are set and together with connecting firmly, the valve head
It is provided with the sealing cone coordinated with sealing valve port.
7. a kind of electric expansion valve according to claim 6, it is characterised in that：The seal receptacle is located at outside spring housing,
The seal receptacle is provided with the step recess snapped in for the end of spring housing second；Or step boss is set on seal receptacle, by step boss
It is fitted into the endoporus of the second end of spring housing.
8. a kind of electric expansion valve according to claim 6, it is characterised in that：The seal receptacle is located inside spring housing,
Second end of the spring housing is provided with the positioning rib positioned to seal receptacle.
9. a kind of electric expansion valve according to claim 8, it is characterised in that：The valve element guide section is located on valve head,
The sealing cone of the valve head is integrally machined with valve element guide section.
10. a kind of electric expansion valve according to claim 6, it is characterised in that：The sealing structure includes being located at spring
The sealing directed cavity at the second end is covered, seal groove is set on the insert body, be provided with the seal groove and sealed in directed cavity
The seal of wall sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621146633.4U CN206268472U (en) | 2016-10-21 | 2016-10-21 | A kind of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621146633.4U CN206268472U (en) | 2016-10-21 | 2016-10-21 | A kind of electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206268472U true CN206268472U (en) | 2017-06-20 |
Family
ID=59037609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621146633.4U Expired - Fee Related CN206268472U (en) | 2016-10-21 | 2016-10-21 | A kind of electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206268472U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237846A (en) * | 2017-07-10 | 2019-01-18 | 浙江盾安禾田金属有限公司 | A kind of electric expansion valve |
| CN109780224A (en) * | 2017-11-13 | 2019-05-21 | 艾默生环境优化技术(苏州)有限公司 | Electric expansion valve |
| CN110296259A (en) * | 2018-03-23 | 2019-10-01 | 浙江三花智能控制股份有限公司 | Electric expansion valve and refrigeration system with it |
| CN114352728A (en) * | 2020-10-12 | 2022-04-15 | 浙江盾安人工环境股份有限公司 | Flow regulating valve |
| CN114542734A (en) * | 2022-01-17 | 2022-05-27 | 杭州山木汽车热管理科技有限公司 | Plug-in type bidirectional electronic expansion valve |
| WO2022135021A1 (en) * | 2020-12-26 | 2022-06-30 | 浙江盾安人工环境股份有限公司 | Valve core assembly and electronic expansion valve having same |
-
2016
- 2016-10-21 CN CN201621146633.4U patent/CN206268472U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237846A (en) * | 2017-07-10 | 2019-01-18 | 浙江盾安禾田金属有限公司 | A kind of electric expansion valve |
| CN109780224A (en) * | 2017-11-13 | 2019-05-21 | 艾默生环境优化技术(苏州)有限公司 | Electric expansion valve |
| CN110296259A (en) * | 2018-03-23 | 2019-10-01 | 浙江三花智能控制股份有限公司 | Electric expansion valve and refrigeration system with it |
| CN110296259B (en) * | 2018-03-23 | 2021-02-26 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and refrigeration system with same |
| CN114352728A (en) * | 2020-10-12 | 2022-04-15 | 浙江盾安人工环境股份有限公司 | Flow regulating valve |
| WO2022135021A1 (en) * | 2020-12-26 | 2022-06-30 | 浙江盾安人工环境股份有限公司 | Valve core assembly and electronic expansion valve having same |
| CN114542734A (en) * | 2022-01-17 | 2022-05-27 | 杭州山木汽车热管理科技有限公司 | Plug-in type bidirectional electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20191021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |