CN103994231A - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN103994231A CN103994231A CN201410180531.3A CN201410180531A CN103994231A CN 103994231 A CN103994231 A CN 103994231A CN 201410180531 A CN201410180531 A CN 201410180531A CN 103994231 A CN103994231 A CN 103994231A
- Authority
- CN
- China
- Prior art keywords
- expansion valve
- electric expansion
- valve
- silk braid
- connecting plate
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an electronic expansion valve which comprises a valve cover (1), a magnet rotor assembly (2), a screw sleeve (3), a check ring guide rail (4), a check ring (5), a screw sleeve pressing plate (6), a valve needle assembly (7), a flow equalization device (8), a valve body (9), a valve deck (10), a filter screen (11), a lead-out pipe (12) and a lead-in pipe (13). The magnet rotor assembly (2) is arranged in the expansion valve, the upper end of the valve needle assembly (7) penetrates through and is welded together with a central hole of the magnet rotor assembly (2), the valve needle assembly (7) is sleeved with the screw sleeve (3) and can only do axial movement, and the screw sleeve (3) is embedded in and presses the flow equalization device (8). By means of the electronic expansion valve, the magnet rotor installation and fixation procedures can be reduced, machining cost can be reduced, impact which is exerted on a valve needle by flow can be effectively reduced, noise can be effectively lowered, and a valve opening can be effectively protected. By means of the electronic expansion valve, reliability and stability can be improved, the service life can be prolonged, and noise in the valve can be effectively lowered.
Description
Technical field
The invention belongs to refrigeration system control field, be 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 by the upper and lower bit architecture of spring guide rail, determines the stroke of stop ring.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 problem to be solved in the present invention 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 present invention adopts following technical proposals:
For solving the problems of the technologies described above, the invention provides a kind of electric expansion valve, comprise 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, 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 by described magnet rotor connection part central through bore and described magnetic rotor component is affixed is integral, described magnet rotor connection part is comprised of rotor connecting plate and stop rod link, and by magnet steel, be injection molded into integrative-structure 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 circle, can be also polygonal.
The end face of described rotor connecting plate can be circle, 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, also can for oval, also can be for polygonal, also can be circle.
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 for a sidewall porous simplified, play current balance function, also have certain filtering effect, described current equalizer upper end contacts with silk braid, the interior end of 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, a plurality of 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, only needs to consider the form accuracy of injection mould easily, 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, saved 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 reduced 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 guaranteed the stability of its work, increases the life-span of electric expansion valve.
Electric expansion valve provided by the invention 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.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment's schematic diagram of electric expansion valve that the present invention 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;
The rotor connecting plate plan view that Fig. 3-1 is magnet rotor connection part of the present invention;
The stop rod link plan view that Fig. 3-2 are magnet rotor connection part of the present invention;
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
Below in conjunction with Figure of description, illustrate present embodiment.
Referring to Fig. 1 to Fig. 3.The electric expansion valve that the present invention 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 available welding is fixed, 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 present invention is described in detail.Applied specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (10)
1. an electric expansion valve, comprise 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), 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 1 and 2, it is characterized in that, on the end face of described rotor connecting plate (15) and stop rod link (17), 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 (17) end face can be corresponding with the through hole on described rotor connecting plate (15) end face, the end face of described stop rod link (17) and rotor connecting plate (15) can be circle, can be also polygonal.
4. electric expansion valve according to claim 1 and 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 can be flat, can be also ellipse, can be also polygonal.
6. electric expansion valve according to claim 1, is characterized in that, what described current equalizer (8) can be for a sidewall porous is simplified, and described current equalizer (8) can be tubular, also can be frustoconic shape, also can be tubaeformly, also can be terrace with edge shape.
7. electric expansion valve according to claim 1, is characterized in that, can add one deck filter screen in described current equalizer (8) outside.
8. electric expansion valve according to claim 1, it is characterized in that, described silk braid (3) bottom can lengthen, and at lengthening section sidewall, a plurality of perforation are 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.
9. electric expansion valve according to claim 1, is characterized in that, can be provided with filter screen (11) in valve seat (10) outlet.
10. electric expansion valve according to claim 1, is characterized in that, described valve seat (10) can directly be lathed integrative-structure with valve body (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410180531.3A CN103994231A (en) | 2014-04-30 | 2014-04-30 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410180531.3A CN103994231A (en) | 2014-04-30 | 2014-04-30 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103994231A true CN103994231A (en) | 2014-08-20 |
Family
ID=51308486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410180531.3A Pending CN103994231A (en) | 2014-04-30 | 2014-04-30 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103994231A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705510A (en) * | 2015-07-17 | 2017-05-24 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and valve seat component thereof |
| CN106763989A (en) * | 2015-11-25 | 2017-05-31 | 浙江盾安人工环境股份有限公司 | Electric expansion valve |
| CN110296246A (en) * | 2018-03-23 | 2019-10-01 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| CN110792874A (en) * | 2018-08-01 | 2020-02-14 | 天津华信机械有限公司 | Electronic expansion valve |
| CN110836271A (en) * | 2018-08-17 | 2020-02-25 | 浙江盾安禾田金属有限公司 | Electronic expansion valve and air conditioning system using same |
| WO2021212889A1 (en) * | 2020-04-24 | 2021-10-28 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and manufacturing method therefor |
| 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 |
| WO2024021815A1 (en) * | 2022-07-27 | 2024-02-01 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration apparatus |
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| CN2580367Y (en) * | 2002-10-29 | 2003-10-15 | 浙江盾安机械有限公司 | Direct driving type electronic expansion valve for variable frequency air conditioner |
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| CN103470785A (en) * | 2013-09-30 | 2013-12-25 | 苏州优冷机电科技有限公司 | Electronic expansion valve |
| CN203963029U (en) * | 2014-04-30 | 2014-11-26 | 吴俊云 | A kind of electric expansion valve |
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| CN2580367Y (en) * | 2002-10-29 | 2003-10-15 | 浙江盾安机械有限公司 | Direct driving type electronic expansion valve for variable frequency air conditioner |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705510B (en) * | 2015-07-17 | 2019-11-15 | 浙江三花智能控制股份有限公司 | Electric expansion valve and its valve component |
| CN106705510A (en) * | 2015-07-17 | 2017-05-24 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and valve seat component thereof |
| CN106763989A (en) * | 2015-11-25 | 2017-05-31 | 浙江盾安人工环境股份有限公司 | Electric expansion valve |
| CN110296246B (en) * | 2018-03-23 | 2020-08-21 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN110296246A (en) * | 2018-03-23 | 2019-10-01 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| CN110792874A (en) * | 2018-08-01 | 2020-02-14 | 天津华信机械有限公司 | Electronic expansion valve |
| CN110836271A (en) * | 2018-08-17 | 2020-02-25 | 浙江盾安禾田金属有限公司 | Electronic expansion valve and air conditioning system using same |
| WO2021212889A1 (en) * | 2020-04-24 | 2021-10-28 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and manufacturing method therefor |
| JP2023520292A (en) * | 2020-04-24 | 2023-05-17 | 浙江盾安人工環境股▲ふん▼有限公司 | Electronic expansion valve and method for manufacturing electronic expansion valve |
| JP7431993B2 (en) | 2020-04-24 | 2024-02-15 | 浙江盾安人工環境股▲ふん▼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 |
| WO2024021815A1 (en) * | 2022-07-27 | 2024-02-01 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration apparatus |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140820 |