CN203963029U - A kind of electric expansion valve - Google Patents
A kind of electric expansion valve Download PDFInfo
- Publication number
- CN203963029U CN203963029U CN201420219523.0U CN201420219523U CN203963029U CN 203963029 U CN203963029 U CN 203963029U CN 201420219523 U CN201420219523 U CN 201420219523U CN 203963029 U CN203963029 U CN 203963029U
- Authority
- CN
- China
- Prior art keywords
- electric expansion
- expansion valve
- silk braid
- stop ring
- valve
- 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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Classifications
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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 a kind of electric expansion valve, valve comprises valve bonnet (1), magnetic rotor component (2), silk braid (3), stop ring guide rail (4), stop ring (5), silk braid pressing plate (6), needle assembly (7), current equalizer (8), valve body (9), valve seat (10), filter screen (11), delivery line (12), ingress pipe (13), described magnetic rotor component (2) is placed in electric expansion valve, needle assembly (7) upper end is passed the center hole of rotor assembly (2) and is welded together, and needle assembly (7) is enclosed in silk braid (3) and can only moves axially, with silk braid pressing plate (6) embedding silk pressing cover (3) and make its lower end embedding be pressed in the upper end of current equalizer (8), valve body (9) inner bottom part is pushed down in current equalizer (8) lower end, stop ring (5) and stop ring guide rail (4) are enclosed within the outside of silk braid (3), and wherein stop ring guide rail (4) lower end inlay card is in the groove of silk braid (3) appearance.Described magnetic rotor component (2) comprises magnet steel (16), rotor connecting plate (15) and the link with stop rod (17), rotor connecting plate (15) and the link with stop rod (17) and magnet steel (16) injection moulding all-in-one-piece structure.This electric expansion valve can reduce the fixing operation of installation of magnet rotor; can cut down finished cost, can effectively reduce the impact of fluid to needle, effectively reduce turbulence level in valve body; effectively reduce flow noise and impact noise, can effectively protect valve port to avoid the destruction of solid impurity.The electric expansion valve that the utility model provides can improve the stability of its reliability of structure and work, increases the life-span of electric expansion valve, and effectively reduces noise in valve.
Description
Technical field
The utility model belongs to refrigeration system control field, is specifically related to a kind of electric expansion valve.
Background technique
At refrigeration technology field, electric expansion valve is the cold medium flux controlling component of chiller plant.Electric expansion valve is rotated by the magnetic rotor component of pulse input power control step motor, and magnetic rotor component makes to be placed in epitrochanterian needle by screw thread transmission and does axial motion, thereby plays the fluid flow size effect of controlling by valve.In order to control accurately aperture and the uninterrupted of electric expansion valve valve port, conventionally in the inside of electric expansion valve, fixing spring guide rail is set, stop ring is set in spring guide rail, described stop ring can rotate in spring guide rail, and determines the stroke of stop ring by the upper and lower bit architecture of spring guide rail.Correspondingly, stop component is set in magnetic rotor component, stop component rotates with magnetic rotor component, and its one end is fixed in magnetic rotor component, and another terminal block is pressed on stop ring, by the restriction of the upper and lower stroke of stop ring, thus the needle axial displacement in restrict rotor.In addition, the throttling noise of electric expansion valve and the reliability of work are also not allow the realistic problem of avoidance.
Therefore, how to improve the reliability of electronic expansion valve structure and the reliability of work, reduce process costs, reduce noise in valve, increasing the life-span is the problem that those skilled in the art need solution badly.
Summary of the invention
The technical problems to be solved in the utility model is for providing a kind of electric expansion valve, the structural design of this electric expansion valve can significantly reduce the probability that its stop component is damaged on the one hand, thereby improve its reliability of structure, can improve on the other hand the reliability and stability of its work.
For this reason, the utility model adopts following technical proposals:
For solving the problems of the technologies described above, the utility model provides a kind of electric expansion valve, comprises valve bonnet, valve body, magnetic rotor component, needle assembly, stop ring, stop ring guide rail, silk braid, silk braid pressing plate, valve seat, delivery line, ingress pipe, current equalizer, described needle assembly comprises screw mandrel, needle spring, needle, described needle spring is placed in described needle inner chamber, individual step is arranged at the bottom of described screw mandrel, and be positioned at needle top inner chamber, the thin part of its end is inserted in needle spring, needle top is by reducing, allow the screw mandrel can to-and-fro motion in needle inner chamber, can not allow again screw mandrel bottom escape from, described magnetic rotor component comprises magnet steel and described magnet rotor connection part, and described magnetic rotor component is provided with inner chamber, in described inner chamber, be provided with the screw mandrel fixing with described magnet rotor connection part, described inner chamber is also provided with the stop ring guide rail of fixing and be enclosed within described silk braid outside with described magnet rotor connection part, and stop ring is enclosed within on described stop ring guide rail, and can and do relative motion with it along stop ring guide rail, the top of described magnetic rotor component is fixed with magnet rotor connection part, and described screw mandrel is affixed integral by described magnet rotor connection part central through bore and described magnetic rotor component, described magnet rotor connection part is made up of rotor connecting plate and stop rod link, and be injection molded into integrative-structure by magnet steel again after rotor connecting plate and the assembling of stop rod link, on the end face of described magnet rotor connection part, there is through hole, the hook-shaped one end of described stop ring guide rail band embeds in the groove of silk braid, and described silk braid wall has perforation.
Stop rod on described magnet rotor connection part can cylindrical shape magnet steel within, form lower stop rod, also can be on cylindrical shape magnet steel, stop rod in formation, described link annular end face center is provided with through hole.Described stop rod is that described stop rod link prolongation is directly bent to form.
Alternatively, on the end face of described rotor connecting plate and stop rod link, can be provided with through hole, the quantity of described through hole is 1-16, and the equivalent diameter in hole can be not identical.Lead to the hole site on described stop rod link end face can be corresponding with the through hole on described rotor connecting plate end face.
Alternatively, on described magnet rotor connection part annular end face, can only have central through bore.
On described rotor connecting plate, there is the through hole identical with stop rod section configuration, be convenient to stop rod and be inserted in.
Described rotor connecting plate periphery is provided with breach, and the corresponding periphery of stop rod link is provided with and the corresponding flange projection of rotor connecting plate outer periphery notch.
The end face of described stop rod link can be circular, can be also polygonal.
The end face of described rotor connecting plate can be circular, can be also polygonal.
Described rotor connecting plate and stop rod link are sheet-metal formed part.
Described stop ring is coiled into by wire, and section wiry can be flat, can be also oval, also can for polygonal, also can be for circular.
But described silk braid metal processing piece.
Described silk braid can be also plastic forming part, and described metal platen can be injection molded into one with silk braid.
Described current equalizer can be the cylindrical shell of a sidewall porous, plays current balance function, also has certain filtering effect, and described current equalizer upper end contacts with silk braid, and the end in valve body is withstood in lower end.
Alternatively, in order to strengthen filtering effect, can add one deck filter screen in described current equalizer outside.
Alternatively, described current equalizer can be tubular, also can be frustoconic shape, also can be tubaeformly, also can be terrace with edge shape.
Alternatively, described silk braid bottom can lengthen, and at lengthening section sidewall, multiple perforation is set, shape all-in-one-piece silk braid current equalizer, and silk braid bottom lengthening section can be for tubular, also can be frustoconic shape, also can be tubaeform, also can be terrace with edge shape.
Alternatively, can be provided with filter screen in valve seat outlet, filter screen can be fixed through spinning delivery line, also can be welded and fixed, and also can interference press-fit fixing.
Alternatively, the screw mandrel in described needle assembly can pass an interference cover, and screw mandrel bottom can be pressed into needle inner chamber together with described interference cover, described interference cover and needle inner chamber interference fit, and described screw mandrel can move around.
Alternatively, in described needle assembly, screw mandrel can pass a needle cover plate, and it is affixed that needle cover plate passes through welding or riveted means and needle upper end, and insert in the needle spring in needle inner chamber screw mandrel bottom.
Alternatively, described valve seat and valve body can directly be lathed integrative-structure.
Described magnet rotor connection part, injection moulding magnet steel easily, only needs to consider the form accuracy of injection mould, and needn't consider the precision of stop rod bending part mould; In addition, described magnet rotor connection part each several part is sheet-metal formed part, save turning processing, and owing to being formed by two fastenings, can reduce the thickness of panel beating, easier moulding, shaping die loss is little, and reduce the welding process of stop rod, and owing to having through hole on connecting plate end face, eliminated inside and outside differential pressure.Compared with prior art, can significantly cut down finished cost.The stop ring that adopts non-circular metal silk to make can reduce its stop component stuck probability occurs.In addition, owing to being provided with current equalizer, can effectively reduce the impact of fluid to needle, can play certain filtration simultaneously, and can make the velocity field of restricted flow be evenly distributed, effectively reduce turbulence level in valve body, effectively reduce flow noise and impact noise.Because electric expansion valve can bidirectional throttle, current equalizer or add overlaps current equalizer, the egress filtering net of filter screen and can effectively protect valve port to avoid the destruction of solid impurity, thereby has ensured the stability of its work, increases the life-span of electric expansion valve.
The electric expansion valve that the utility model provides can improve the stability of its reliability of structure and work, increases its life-span, and can effectively reduce noise in valve, reduces electric expansion valve stuck possibility occurs.
Brief description of the drawings
Fig. 1 is a kind of embodiment's schematic diagram of electric expansion valve that the utility model provides;
Fig. 2 is the magnetic rotor component structural representation of electric expansion valve in Fig. 1;
Fig. 3 is the magnet rotor connection part shaft side figure of electric expansion valve in Fig. 2;
Fig. 3-1 is the rotor connecting plate plan view of the utility model magnet rotor connection part;
Fig. 3-2 are the stop rod link plan view of the utility model magnet rotor connection part;
Fig. 4 is the stop ring structural representation of electric expansion valve in Fig. 1.
In figure: 1. valve bonnet, 2. magnetic rotor component, 3. silk braid, 4. stopper guide rail, 5. stop ring, 6. silk braid pressing plate, 7. needle assembly, 8. current equalizer, 9. valve body, 10. valve seat, 11. filter screens, 12. export mouths, 13. introducing ports.15. rotor connecting plates, 16. magnet steel, 17. stop rod links, 18. rotor connecting plates, 19. stop rod links.
Embodiment
Illustrate present embodiment below in conjunction with Figure of description.
Referring to Fig. 1 to Fig. 3.The electric expansion valve that the utility model provides comprises valve bonnet (1), magnetic rotor component (2), silk braid (3), stop ring guide rail (4), stop ring (5), silk braid pressing plate (6), needle assembly (7), current equalizer (8), valve body (9), valve seat (10), filter screen (11), delivery line (12), ingress pipe (13).Cover body (1) is welded to connect and forms an airtight inner chamber with valve body (9).Valve seat (10) is placed on valve body (9).Magnetic rotor component (2) comprises magnet steel (16), rotor connecting plate (15) and stop rod link (17), rotor connecting plate (15) and stop rod link (17) and magnet steel (16) injection moulding all-in-one-piece structure.Magnetic rotor component (2) is placed in electric expansion valve, needle assembly (7) upper end is passed the center hole of rotor assembly (2) and is welded together, and needle assembly (7) is enclosed in silk braid (3) and can only moves axially, with silk braid pressing plate (6) embedding silk pressing cover (3) and make its lower end embedding be pressed in the upper end of current equalizer (8), valve body (9) inner bottom part is pushed down in current equalizer (8) lower end, silk braid pressing plate (6) and valve body (9) interference fit, also can be fixed with welding, stop ring (5) and stop ring guide rail (4) are enclosed within the outside of silk braid (3), wherein stop ring guide rail (4) lower end inlay card is in the groove of silk braid (3) appearance, after magnetic rotor component (2) rotates, drive needle assembly (7) to axially move to control the valve port opening by electric expansion valve with respect to valve seat (10), thereby control fluid flow, stop ring (5) is controlled the upper and lower displacement amount of magnetic rotor component (2).
Above a kind of embodiment of a kind of electric expansion valve provided by the utility model is described in detail.Applied specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (8)
1. an electric expansion valve, comprises valve bonnet (1), magnetic rotor component (2), silk braid (3), stop ring guide rail (4), stop ring (5), silk braid pressing plate (6), needle assembly (7), current equalizer (8), valve body (9), valve seat (10), filter screen (11), delivery line (12), ingress pipe (13), it is characterized in that, magnetic rotor component (2) is placed in electric expansion valve, needle assembly (7) upper end is passed the center hole of rotor assembly (2) and is welded together, and needle assembly (7) is enclosed in silk braid (3) and can only moves axially, with silk braid pressing plate (6) embedding silk pressing cover (3) and make its lower end embedding be pressed in the upper end of current equalizer (8), valve body (9) inner bottom part is pushed down in current equalizer (8) lower end, stop ring (5) and stop ring guide rail (4) are enclosed within the outside of silk braid (3), and wherein stop ring guide rail (4) lower end inlay card is in the groove of silk braid (3) appearance.
2. electric expansion valve according to claim 1, it is characterized in that, magnetic rotor component (2) comprises magnet steel (16), rotor connecting plate (15) and stop rod link (17), rotor connecting plate (15) and stop rod link (17) and magnet steel (16) injection moulding all-in-one-piece structure.
3. electric expansion valve according to claim 2, is characterized in that, the end face of described rotor connecting plate (15) and stop rod link (17) is provided with through hole, and the quantity of described through hole is 1-16.
4. electric expansion valve according to claim 2, it is characterized in that, on described rotor connecting plate (15), there is the through hole identical with stop rod section configuration, being convenient to stop rod is inserted in, described stop rod is that described link (17) prolongation is directly bent to form, described rotor connecting plate (15) periphery is provided with breach, and the corresponding periphery of stop rod link (17) is provided with and the corresponding flange projection of rotor connecting plate (15) outer periphery notch.
5. electric expansion valve according to claim 1, is characterized in that, described stop ring (5) section wiry is oval.
6. electric expansion valve according to claim 1, is characterized in that, described current equalizer (8) is the cylindrical shell of a sidewall porous.
7. electric expansion valve according to claim 1, is characterized in that, adds one deck filter screen in described current equalizer (8) outside.
8. electric expansion valve according to claim 1, is characterized in that, is provided with filter screen (11) in valve seat (10) outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420219523.0U CN203963029U (en) | 2014-04-30 | 2014-04-30 | A kind of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420219523.0U CN203963029U (en) | 2014-04-30 | 2014-04-30 | A kind of electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203963029U true CN203963029U (en) | 2014-11-26 |
Family
ID=51923612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420219523.0U Expired - Fee Related CN203963029U (en) | 2014-04-30 | 2014-04-30 | A kind of electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203963029U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994231A (en) * | 2014-04-30 | 2014-08-20 | 吴俊云 | Electronic expansion valve |
| CN107956887A (en) * | 2017-12-22 | 2018-04-24 | 浙江中宝自控元件有限公司 | A kind of locking plate coordinates close motor-driven valve |
| CN109958779A (en) * | 2019-04-24 | 2019-07-02 | 浙江恒森实业集团有限公司 | A kind of electric expansion valve rotor assembly |
| CN111140687A (en) * | 2018-11-06 | 2020-05-12 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN112146313A (en) * | 2019-06-28 | 2020-12-29 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| WO2021218845A1 (en) * | 2020-04-26 | 2021-11-04 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| WO2022037104A1 (en) * | 2020-08-19 | 2022-02-24 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
-
2014
- 2014-04-30 CN CN201420219523.0U patent/CN203963029U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994231A (en) * | 2014-04-30 | 2014-08-20 | 吴俊云 | Electronic expansion valve |
| CN107956887A (en) * | 2017-12-22 | 2018-04-24 | 浙江中宝自控元件有限公司 | A kind of locking plate coordinates close motor-driven valve |
| CN107956887B (en) * | 2017-12-22 | 2023-05-16 | 浙江中宝自控元件有限公司 | Electric valve with tightly matched stop piece |
| CN111140687A (en) * | 2018-11-06 | 2020-05-12 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN109958779A (en) * | 2019-04-24 | 2019-07-02 | 浙江恒森实业集团有限公司 | A kind of electric expansion valve rotor assembly |
| CN112146313A (en) * | 2019-06-28 | 2020-12-29 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| WO2021218845A1 (en) * | 2020-04-26 | 2021-11-04 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| WO2022037104A1 (en) * | 2020-08-19 | 2022-02-24 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20160430 |