CN202835952U - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN202835952U CN202835952U CN2011203906594U CN201120390659U CN202835952U CN 202835952 U CN202835952 U CN 202835952U CN 2011203906594 U CN2011203906594 U CN 2011203906594U CN 201120390659 U CN201120390659 U CN 201120390659U CN 202835952 U CN202835952 U CN 202835952U
- Authority
- CN
- China
- Prior art keywords
- fixed
- valve
- valve seat
- screw nut
- screw
- 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
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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
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses an electronic expansion valve comprising a valve seat, a valve cover connected on the valve seat and a coil fixed on the external side of the valve cover, wherein an inlet and an outlet are arranged on the valve seat, a sealed chamber is formed between the valve cover and the valve seat, a rotor which rotates under the function of the magnetic field of the coil and moves up and down through transmission of a screw-nut, the screw-nut is fixed together and moves with the rotor, a spring guide rail is fixed outside the screw-nut, the spring guide rail is provided with a locating snap ring, a stop lever is fixed on a valve seat flange, a screw is fixed on the valve seat, the screw-nut and screw are respectively provided with an internal thread section and an external thread section, the screw-nut and screw are provided with a smooth guiding section, and a valve needle is fixed on the screw-nut and moves up and down with the rotor to change the flow area of the valve port. The electronic expansion valve is compact and novel in structure, small in size, and stable in work.
Description
[technical field]
The utility model relates to a kind of refrigeration part, and especially a kind of electric expansion valve is for throttling and the Flow-rate adjustment of refrigerating air conditioning device.
[background technology]
The electronic expansion valve controls precision is high, fast response time, adjustable range are wide, and the degree of superheat is adjustable, reliability high continuously, is widely used in the refrigerating air conditioning device, is used for throttling and Flow-rate adjustment.Electric expansion valve is the principle of utilizing stepper motor, utilizes the forward and reverse rotation of coil drive rotor part, drives the circulation area that needle moves up and down to change valve port, realizes reducing pressure by regulating flow and flow-control to cold-producing medium.
Stop device in the existing electric expansion valve is comprised of arresting lever, spring guide rail and locating snap ring mostly, and stop device is arranged in the upper cavity of valve bonnet, causes the volume of electric expansion valve larger, occupies larger installation site.
[summary of the invention]
The utility model provides a kind of refrigeration part, refer in particular to the restricting element of energy fine adjustment refrigerant flow in a kind of air-conditioning system, be used for the precision that air-conditioning system can improve system's refrigerant control, help to improve the efficiency of air-conditioning system, both be conducive to air conditioner system energy saving, can have improved again the thermal comfort of air conditioner surroundings.
In order to overcome existing electric expansion valve above shortcomings, the technical problem that the utility model solves has been to provide a kind of structure of electric expansion valve, its stop component has effectively utilized the cavity in the rotor part, compares with existing electric expansion valve, has reduced the volume of electric expansion valve.
The technical scheme that its technical problem that solves the utility model adopts is: comprise valve seat, be connected in the valve bonnet on the valve seat and be fixed on the stator coil in the valve bonnet outside, the valve port that offers import, outlet on the valve seat and be communicated with import and outlet, form closed cavity between valve bonnet and the valve seat flange, the rotor part and the position-limit mechanism that are provided with the described coil magnetic field of impression in its cavity and rotate and realize by screw nut driving moving up and down, this position-limit mechanism comprises spring guide rail, locating snap ring and arresting lever, and is positioned in the inner chamber of rotor part.Feed screw nut and rotor part are fixed together, screw mandrel is fixed on the valve seat, the feed screw nut outside is fixed with spring guide rail, spring guide rail is provided with locating snap ring, arresting lever is fixed on the flange of valve seat, original position and final position when guaranteeing that with described position-limit mechanism rotor rotates, and guarantee flow and control accuracy.Be respectively equipped with internal thread segment and external thread section above-mentioned feed screw nut and screw mandrel, and be provided with smooth guide section described feed screw nut and screw mandrel, needle is fixed on the feed screw nut, there is the screw mandrel that is fixed on the valve seat in its needle outside, be threaded to transmit motion with the feed screw nut, needle top is equipped with spring, moves up and down to change the circulation area of described valve port with rotor.Spring performance elastic reaction makes needle and valve opening realization automatic aligning and elastic closure, the internal leakage when guaranteeing closure when needle and valve opening are closed.The utility model compact conformation is novel, and volume is little, stable working, and noise is low, and the life-span is long.
Description of drawings
Fig. 1 is electronic expansion valve structure schematic diagram of the present utility model
Fig. 2 is interior retainer spring guide rail and locating snap ring
Among the figure: 1. valve bonnet, 2. arresting lever, 3. locating snap ring, 4. spring guide rail, 5. needle, 6. spring, 7. p-m rotor parts, 8. feed screw nut, 9. screw mandrel, 10. valve seat flange, 11. valve seats, 12. discharge connections, 13. entrance sleeves, 14. stator coils.
[specific embodiment]
Describe below with reference to the accompanying drawings the utility model in detail.
Electric expansion valve as shown in the figure comprises valve bonnet 1, arresting lever 2, locating snap ring 3, spring guide rail 4, needle 5, spring 6, p-m rotor parts 7, feed screw nut 8, screw mandrel 9, valve seat flange 10, reaches valve seat 11, discharge connection 12, entrance sleeve 13 and stator coil 14.
Be provided with fixing hole on the valve seat 11, fixing hole is press-fitted screw mandrel 9 by interference fit, and there are external thread section and smooth section in screw mandrel 9 outsides.
Rotor comprise p-m rotor parts 7 and with feed screw nut 8, internal thread segment and smooth section are arranged in the feed screw nut 8.The external thread section of screw mandrel 9 and feed screw nut's 8 internal thread segment threaded engagement.
Spring guide rail 4 one ends pass feed screw nut 8, are fixed by welding on the feed screw nut, and spring guide rail 4 is provided with locating snap ring 3, and arresting lever 2 is weldingly fixed on the valve seat flange 9.The lower end of valve bonnet 1 is welded on the valve seat flange 10.
Claims (4)
1. electric expansion valve, comprise valve seat (11), be fixed in the valve bonnet (1) on the valve seat flange (10) and be fixed on the stator coil (14) in the valve bonnet outside, it is characterized in that: offer import (13) on the described valve seat, outlet (12), form closed cavity between described valve bonnet (1) and the valve seat flange (10), the rotor part (7) that is provided with a described coil magnetic field of impression in the cavity and rotates and move up and down by feed screw nut (8) transmission realization, feed screw nut (8) is fixed together with rotor part (7), move with rotor part, feed screw nut (8) outside is fixed with spring guide rail (4), spring guide rail (4) is provided with locating snap ring (3), arresting lever (2) is fixed on the valve seat flange (10), screw mandrel (9) is fixed on the valve seat (11), be respectively equipped with internal thread segment and external thread section above-mentioned feed screw nut (8) and screw mandrel (8), and be provided with smooth guide section described feed screw nut (8) and screw mandrel (9), needle (5) is fixed on the feed screw nut (8), moves up and down to change the circulation area of described valve port with rotor part (7).
2. electric expansion valve according to claim 1 is characterized in that: there is the screw mandrel (9) that is fixed on the valve seat (11) in its needle (5) outside, and it is threaded to transmit motion with feed screw nut (8).
3. electric expansion valve according to claim 1, it is characterized in that: it also comprises a position-limit mechanism, this structure has spring guide rail (4), locating snap ring (3), arresting lever (2) to form, and be positioned in rotor part (7) inner chamber.
4. according to claim 3 described electric expansion valves, it is characterized in that: spring guide rail (4) is fixed on feed screw nut (8) outside, and arresting lever (2) is fixed on the valve seat flange (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203906594U CN202835952U (en) | 2011-10-14 | 2011-10-14 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203906594U CN202835952U (en) | 2011-10-14 | 2011-10-14 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202835952U true CN202835952U (en) | 2013-03-27 |
Family
ID=47947642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203906594U Expired - Fee Related CN202835952U (en) | 2011-10-14 | 2011-10-14 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202835952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019179517A1 (en) * | 2018-03-23 | 2019-09-26 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
-
2011
- 2011-10-14 CN CN2011203906594U patent/CN202835952U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019179517A1 (en) * | 2018-03-23 | 2019-09-26 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN110296264A (en) * | 2018-03-23 | 2019-10-01 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20131014 |