CN202835954U - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN202835954U CN202835954U CN2012204881423U CN201220488142U CN202835954U CN 202835954 U CN202835954 U CN 202835954U CN 2012204881423 U CN2012204881423 U CN 2012204881423U CN 201220488142 U CN201220488142 U CN 201220488142U CN 202835954 U CN202835954 U CN 202835954U
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- CN
- China
- Prior art keywords
- magnet rotor
- expansion valve
- valve body
- nut seat
- electric expansion
- 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 - Lifetime
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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 and belongs to the field of refrigeration equipment. The technical problems that an existing electronic expansion valve is difficult to assemble, high in cost, and particularly poor in product use stability can be solved. The electronic expansion valve comprises a valve body, a magnetic rotor, a nut seat, a screw and a valve needle. The nut seat is installed on the valve body, the screw is installed in the nut seat in a penetrating mode, the valve needle is connected on the screw, the valve body is provided with a casing pipe used for containing the magnetic rotor and the nut seat, a positioning assembly used for limiting axial displacement of the magnetic rotor is arranged in the casing pipe, the valve body is provided with a pressure relief hole, the pressure relief hole is used for communicating the inner space of the valve body and the inner space of the casing pipe, and the magnetic rotor is provided with an axially penetrated pressure relief channel. The electronic expansion valve is mainly used on the refrigeration equipment such as an air conditioner and a refrigerator.
Description
Technical field
The utility model relates to a kind of motor-driven valve, especially is used for the electric expansion valve of flow-control in refrigeration system.
Background technology
Electric expansion valve is a vitals in the refrigeration system, mainly play a part reducing pressure by regulating flow and adjust flux, it is the intelligentized important step of refrigeration system, also be important means and the assurance that refrigeration system optimization is really realized, also be the symbol of refrigeration system electromechanical, be used in the increasing field.
Existing electric expansion valve comprises valve body, stator coil, magnet rotor, nut seat, screw rod and be installed on needle on the screw rod, and screw rod is equipped mutually by screw thread with nut seat.Electric expansion valve utilizes stator coil to drive the magnet rotor rotation when work, and magnet rotor drives the screw rod rotation, and axial lifting in the time of the screw rod rotation moves up and down adjust flux thereby drive needle.But needle is to be in vacant state in the process of motion, because system pressure changes or the refrigerant pulsation, easily cause needle to swing, when reaching certain amplitude of fluctuation, needle can come in contact with the valve seat hole wall and produce noise, in large capacity commercial air conditioning system, because system running pressure is higher, this problem is more outstanding especially; In addition, because the impact of air-flow makes magnet rotor produce larger pressure reduction in the space up and down, can cause certain destruction to magnet rotor behind the gas shock nut seat.
In the invention
Problem to be solved in the utility model just provides a kind of electric expansion valve, and assembling is simple, cost is low, and can effectively reduce the impact that gas shock causes the valve inner part, guarantees product stability in use and reliability.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of electric expansion valve, comprise valve body, magnet rotor, nut seat, screw rod and needle, described nut seat is installed on the valve body, described screw rod is installed on the nut seat, described needle is connected on the screw rod, described valve body is provided with the sleeve pipe that holds magnet rotor and nut seat, be provided with the locating assembly of restriction magnet rotor axial displacement in the described sleeve pipe, described valve body is provided with relief hole, described relief hole is communicated with valve body inner space and inside pipe casing space, and described magnet rotor is provided with the pressure release passage that axially runs through.
Further, described valve body is provided with the annular boss of attaching nut's seat, and described relief hole is located on the sidewall of annular boss.
Further, described magnet rotor comprises magnet and support, and described magnet is fixed on the support, and described pressure release passage is located on the support.
Further, be provided with installing hole in the described magnet rotor, the inwall of described installing hole is provided with axial chute, and described screw rod is provided with protruding pin, and described protruding pin stretches in the chute.
Further, described locating assembly comprise be located at the upper location structure between magnet rotor and the sleeve pipe roof and be located at magnet rotor and nut seat between lower location structure.
Further, described upper location structure comprises the locating slot that is located at the sleeve pipe roof and is located at the positioning convex of magnet rotor upper end, in the described positioning convex embedding locating slot; Perhaps described upper location structure comprises the locating slot that is located at the magnet rotor upper surface and the positioning convex that is located at the sleeve pipe roof, and described positioning convex embeds in the locating slot.
Further, described lower location structure comprises the stepped hole of being located at the magnet rotor lower end, and described nut seat upper end is inserted in the stepped hole.
The beneficial effects of the utility model:
The utility model is provided with the pressure release passage that axially runs through at magnet rotor, after air-flow enters sleeve pipe, by pressure release passage the air-flow in the sleeve pipe is circulated and dispersion fast, thereby the Fast-Balance magnet rotor is the pressure reduction in space up and down, has avoided prior art middle sleeve internal cause to produce pressure reduction and destruction that magnet rotor is caused.Because the relief hole part air-flow of having released, reduced in the valve body air-flow to the impact of needle, avoided occurring in the prior art because noise and the functional reliability decline problem that gas shock produces guarantees product stability in use and reliability.
In addition, electric expansion valve provided by the utility model, under the effect of locating assembly, axial displacement can not occur when rotating in magnet rotor, by the cooperating of protruding pin and chute, make magnet rotor can drive bolt rotary when rotating between magnet rotor and the screw rod, the electric expansion valve volume of this kind structure is little, assemble comparatively simply, can reduce production costs.
There is similar pressure relief in the prior art, but its pressure release passage does not axially run through whole magnet rotor, but the air-flow of the cavity of resorption of sleeve pipe is introduced the hole that is used for the assembling screw rod in the magnet rotor, the balance needle is the pressure of both sides up and down, improve the stability of needle, but the stability of the assurance magnet rotor that this kind pressure relief can not be good.In the present embodiment, by the pressure release passage 412 that axially runs through setting, can be rapidly with the epicoele 52 of the air-flow lead-in bushing 5 in the cavity of resorption 51 of sleeve pipe 5, thereby the pressure reduction fast in the sleeve pipe 5, prevent that effectively magnet rotor 4 is destroyed, guarantee product stability in use and reliability.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the first internal cross section schematic diagram of the utility model electric expansion valve;
Fig. 2 is the second internal cross section schematic diagram of the utility model electric expansion valve;
Fig. 3 is the magnetic rotor structure schematic diagram of the utility model electric expansion valve.
The specific embodiment
The utility model provides a kind of electric expansion valve, and the outside stator coil of its utilization drives magnet rotor and rotates, but magnet rotor is not because rising or descending motion can occur in the restriction of locating assembly; Thereby can reduce assembly difficulty, the production control cost.And, because the effect of relief hole and pressure release passage, change or during the refrigerant pulsation at system pressure, can rapid dispersion pressure, the impact that the reduction gas shock causes the valve inner part.
Be explained and illustrated below in conjunction with the accompanying drawing of the utility model embodiment technical scheme to the utility model embodiment, but following embodiment is preferred embodiment of the present utility model only, is not whole.Based on the embodiment in the embodiment, those skilled in the art belong to protection domain of the present utility model at lower other embodiment that obtains of the prerequisite of not making creative work.
With reference to Fig. 1,2, a kind of electric expansion valve, comprise valve body 1, magnet rotor 4, nut seat 6, screw rod 2 and needle 3, nut seat 6 is installed on the valve body 1, screw rod 2 is installed on the nut seat 6, needle 3 is connected on the screw rod 2, valve body 1 is provided with the sleeve pipe 5 that holds magnet rotor 4 and nut seat 6, be provided with the locating assembly of restriction magnet rotor 4 axial displacements in the sleeve pipe 5, valve body 1 is provided with relief hole 13, relief hole 13 is communicated with valve body 1 inner space and sleeve pipe 5 inner spaces, and magnet rotor 4 is provided with the pressure release passage 412 that axially runs through.
In this enforcement, valve body 1 forms three spaces after finishing with the built-in part assembling of sleeve pipe 5, is respectively: the epicoele 52 of the valve pocket 11 of valve body 1, the cavity of resorption 51 of sleeve pipe 5, sleeve pipe 5.When electric expansion valve is worked, air-flow at first enters valve pocket 11, system pressure changes or the refrigerant pulsation can produce impact to needle 3 and nut seat 6, relief hole 13 can be with the cavity of resorption 51 of part air-flow lead-in bushing 5, slow down air-flow to the impact of needle 3 and nut seat 6, avoid because noise and the functional reliability decline problem that gas shock produces.Air-flows in the cavity of resorption 51 of sleeve pipe 5 can be by the epicoele 52 of pressure release passage 412 lead-in bushings 5, with this can equilibrium magnetism rotor two ends 4 about pressure, reduce or eliminate pressure reduction, avoid sleeve pipe 5 internal causes generation pressure reduction and destruction that magnet rotor 4 is caused.
During implementation, pressure release passage 412 can arrange a plurality of, and axial arranged along nut seat 6, and air-flow is uniformly dispersed, and in the present embodiment, is provided with the pressure release passage 412 of six circumferential arrangement at magnet rotor 4.Be provided with the annular boss 12 of attaching nut's seat 6 lower ends at valve body 1, relief hole 13 is located on the sidewall of annular boss 12.
With reference to Fig. 3, in the present embodiment, magnet rotor 4 comprises magnet 41 and support 42, and support 42 is cylindric, and its outer wall forms cannelure, and magnet 41 is fixed in the cannelure, the support magnet 41 that support 42 can be good.Support 42 is generally moulding, and pressure release passage 412 is located on the support 42.
With reference to Fig. 2,3, the electric expansion valve that the present embodiment is mentioned, its magnet rotor 4 externally produce under the driving of stator coil and rotatablely move, but axial displacement can not occur, the electric expansion valve volume of this kind structure is little, assembles comparatively simply, can reduce production costs.Concrete: in sleeve pipe 5, be provided with the locating assembly of restriction magnet rotor 4 axial displacements, when magnet rotor 4 rotates, because the restriction of locating assembly axial displacement can not occur.Locating assembly comprise be located at the upper location structure between magnet rotor 4 and sleeve pipe 5 roofs and be located at magnet rotor 4 and nut seat 6 between lower location structure:
Upper location structure comprises the locating slot 61 that is located at sleeve pipe 5 roofs and is located at the positioning convex 51 of magnet rotor 4 upper ends, and positioning convex 51 embeds in the locating slots 61, positioning convex and locating slot engagement limits magnet rotor 4 to top offset; Lower location structure comprises the stepped hole 40 of being located at magnet rotor 4 lower ends, and nut seat 6 upper ends are inserted in the stepped hole 44, nut seat 6 upper ends embed stepped hole 44 interior restriction magnet rotors 4 to bottom offset, thereby good realization the axial location of magnet rotor 4.During actual fabrication, the position of positioning convex and locating slot can exchange, and namely the magnet rotor upper surface arranges locating slot, and the sleeve pipe roof arranges positioning convex; The lower end of sleeve pipe is connected with valve seal, and the roof of above-mentioned sleeve pipe can be at sleeve pipe 5 cover plate 6 to be installed to realize, is convenient to the assembling of built-in part.
In order to realize the synchronous rotary of screw rod 2 and magnet rotor 4, in the present embodiment, in magnet rotor 4, be provided with installing hole 40, the inwall of installing hole 40 is provided with axial chute 401, and screw rod 2 is provided with protruding pin 21, and protruding pin 21 stretches in the chute 401.Cooperate with chute by protruding pin rotatablely moving of magnet rotor 4 is delivered on the screw rod 2, produce axially-movable in the time of screw rod 2 rotation, from driving needle 3 axially-movables.
The utility model embodiment mainly uses at refrigeration plants such as air conditioner, refrigerators.
By above-described embodiment, the purpose of this utility model is by in full force and effect having reached.The personage who is familiar with this skill should be understood that the utility model includes but not limited to the content of describing in accompanying drawing and the top specific embodiment.Any modification that does not depart from function and structure principle of the present utility model all will be included in the scope of claims.
Claims (7)
1. electric expansion valve, comprise valve body, magnet rotor, nut seat, screw rod and needle, described nut seat is installed on the valve body, described screw rod is installed on the nut seat, described needle is connected on the screw rod, described valve body is provided with the sleeve pipe that holds magnet rotor and nut seat, it is characterized in that: the locating assembly that is provided with the axial displacement of restriction magnet rotor in the described sleeve pipe, described valve body is provided with relief hole, described relief hole is communicated with valve body inner space and inside pipe casing space, and described magnet rotor is provided with the pressure release passage that axially runs through.
2. a kind of electric expansion valve as claimed in claim 1, it is characterized in that: described valve body is provided with the annular boss of attaching nut's seat, and described relief hole is located on the sidewall of annular boss.
3. a kind of electric expansion valve as claimed in claim 1, it is characterized in that: described magnet rotor comprises magnet and support, and described magnet is fixed on the support, and described pressure release passage is located on the support.
4. a kind of electric expansion valve as claimed in claim 1, it is characterized in that: be provided with installing hole in the described magnet rotor, the inwall of described installing hole is provided with axial chute, and described screw rod is provided with protruding pin, and described protruding pin stretches in the chute.
5. a kind of electric expansion valve as claimed in claim 1 is characterized in that: described locating assembly comprise be located at the upper location structure between magnet rotor and the sleeve pipe roof and be located at magnet rotor and nut seat between lower location structure.
6. a kind of electric expansion valve as claimed in claim 5 is characterized in that: described upper location structure comprises the locating slot that is located at the sleeve pipe roof and is located at the positioning convex of magnet rotor upper end, and described positioning convex embeds in the locating slot; Perhaps described upper location structure comprises the locating slot that is located at the magnet rotor upper surface and the positioning convex that is located at the sleeve pipe roof, and described positioning convex embeds in the locating slot.
7. a kind of electric expansion valve as claimed in claim 5, it is characterized in that: described lower location structure comprises the stepped hole of being located at the magnet rotor lower end, described nut seat upper end is inserted in the stepped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204881423U CN202835954U (en) | 2012-09-24 | 2012-09-24 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204881423U CN202835954U (en) | 2012-09-24 | 2012-09-24 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202835954U true CN202835954U (en) | 2013-03-27 |
Family
ID=47947644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204881423U Expired - Lifetime CN202835954U (en) | 2012-09-24 | 2012-09-24 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202835954U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016074555A1 (en) * | 2014-11-13 | 2016-05-19 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN104565476B (en) * | 2013-10-28 | 2017-02-08 | 珠海格力电器股份有限公司 | Electronic expansion valve |
| US10119735B2 (en) | 2013-10-28 | 2018-11-06 | Gree Electric Appliances, Inc. Of Zhuhai | Electronic expansion valve |
| CN109958775A (en) * | 2017-12-25 | 2019-07-02 | 浙江盾安机械有限公司 | A kind of electric expansion valve |
| CN110500434A (en) * | 2019-09-25 | 2019-11-26 | 江西鸥迪铜业有限公司 | A kind of spool for electric expansion valve |
| CN110873193A (en) * | 2018-08-29 | 2020-03-10 | 盾安环境技术有限公司 | Electronic expansion valve |
| CN111120664A (en) * | 2019-12-20 | 2020-05-08 | 珠海格力电器股份有限公司 | Electronic expansion valve and air conditioner |
-
2012
- 2012-09-24 CN CN2012204881423U patent/CN202835954U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565476B (en) * | 2013-10-28 | 2017-02-08 | 珠海格力电器股份有限公司 | Electronic expansion valve |
| US10119735B2 (en) | 2013-10-28 | 2018-11-06 | Gree Electric Appliances, Inc. Of Zhuhai | Electronic expansion valve |
| WO2016074555A1 (en) * | 2014-11-13 | 2016-05-19 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN109958775A (en) * | 2017-12-25 | 2019-07-02 | 浙江盾安机械有限公司 | A kind of electric expansion valve |
| CN110873193A (en) * | 2018-08-29 | 2020-03-10 | 盾安环境技术有限公司 | Electronic expansion valve |
| CN110873193B (en) * | 2018-08-29 | 2022-05-13 | 盾安环境技术有限公司 | Electronic expansion valve |
| CN110500434A (en) * | 2019-09-25 | 2019-11-26 | 江西鸥迪铜业有限公司 | A kind of spool for electric expansion valve |
| CN110500434B (en) * | 2019-09-25 | 2024-05-28 | 江西鸥迪铜业有限公司 | Valve core for electronic expansion valve |
| CN111120664A (en) * | 2019-12-20 | 2020-05-08 | 珠海格力电器股份有限公司 | Electronic expansion valve and air conditioner |
| CN111120664B (en) * | 2019-12-20 | 2021-02-02 | 珠海格力电器股份有限公司 | Electronic expansion valve and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |