CN108361393A - Electric expansion valve - Google Patents
Electric expansion valve Download PDFInfo
- Publication number
- CN108361393A CN108361393A CN201710056865.3A CN201710056865A CN108361393A CN 108361393 A CN108361393 A CN 108361393A CN 201710056865 A CN201710056865 A CN 201710056865A CN 108361393 A CN108361393 A CN 108361393A
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- Prior art keywords
- cone
- expansion valve
- electric expansion
- angle
- section
- Prior art date
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- Granted
Links
- 238000007667 floating Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 description 9
- 239000003507 refrigerant Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001595 flow curve Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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
- F16K1/38—Valve members of conical shape
- F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
-
- 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
- F16K1/48—Attaching valve members to screw-spindles
-
- 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
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
-
- 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
-
- 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
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- 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)
- Details Of Valves (AREA)
Abstract
Electric expansion valve, which is characterized in that including：Valve seat, the valve seat offer valve port；Close to or away from the valve port to carry out the needle of flow-rate adjustment to the electric expansion valve；The first cone section that the needle includes main part and cone angle that is adjacent with the main part and setting gradually is different, the second cone section, third cone Duan Yi tetra- bore section.Needle is arranged to include at least four cone sections by the electric expansion valve that the technical program provides, and different angles is respectively set in four cone sections, both ensure that the flow-rate adjustment precision of electric expansion valve, has also reduced the noise of electric expansion valve.
Description
Technical field
The present invention relates to fluid control component technical field, more particularly to a kind of electric expansion valve.
Background technology
In cooling and warming technical field, electric expansion valve is the cold medium flux control unit of heating-cooling equipment, work
Process is generally：With the energization or power-off of the coil device as stator, the magnetic rotor component as rotor is driven to rotate, with
The lead screw that magnet rotor is fixedly connected and follows magnet rotor to rotate drives valve needle movements, and nut part is provided in electric expansion valve,
Nut part is provided with internal thread structure, correspondingly, external thread structure is provided on lead screw, by the cooperation of screw thread pair,
Lead screw is set also needle to be driven to make elevating movement while rotating, in a manner of adjusting the aperture between needle and valve port
The flow for the refrigerant for flowing through valve port is adjusted, to realizing system function and achieve the purpose that accurately control.
In refrigeration systems in use, pressure can be reduced rapidly after throttling, easy flash steam is flowing electric expansion valve
It is susceptible to bubble during dynamic, forms noise, therefore, how to design a kind of electronic expansion valve structure reducing noise, is this
Field technology personnel technical problem urgently to be resolved hurrily.
Invention content
The technical problem to be solved in the present invention is to provide a kind of electric expansion valve, by the improvement to needle structure to reach
The purpose of noise is reduced, for this purpose, the present invention uses following technical scheme：
Electric expansion valve, which is characterized in that including：
Valve seat, the valve seat offer valve port；
Close to or away from the valve port to carry out the needle of flow-rate adjustment to the electric expansion valve；
The needle includes main part and cone angle that is adjacent with the main part and setting gradually is different first
It bores section, the second cone section, third cone Duan Yi tetra- and bores section.
Needle is arranged to include at least four cone sections by the electric expansion valve that the technical program provides, and four cone sections are divided
Different angles is not set, both ensure that the flow-rate adjustment precision of electric expansion valve, also reduced the noise of electric expansion valve.
As further refinement or supplement, the technical program can also be made as follows
The second cone section, the cone of third cone section, the 4th cone angle for boring section meet following relationship：
4 ＞ θ 2 of θ 3 ＞ θ 2, θ 3 ＞ θ 4, θ；
Wherein, θ 2 is the cone angle of the second cone section, and θ 3 is the cone angle that third bores section, and θ 4 is the cone angle of the 4th cone section.
3 angular range of taper angle theta that third bores section is 35 ° ± 10 °.
The cone angle that the taper angle theta 4 of 4th cone section bores section than third meets relationship：
10 ° of 4 ≈ of θ 3- θ.
The angular range of the taper angle theta 1 of the first cone section is 50 ± 15 °.
The angle of the taper theta 2 of the second cone section meets relational expression：3°≤θ2≤10°.
Further restriction can also be made to the connection type of needle and lead screw：
The electric expansion valve further includes lead screw, and the lead screw realizes floating connection with the needle by sleeve part.
End plate is provided at the top of the sleeve part, the lower end of the lead screw is fixedly connected with boss.
The boss is provided with boss thrust face, and the end plate is provided with end plate thrust face, the boss thrust face with
The end plate thrust face is arranged oppositely.
Description of the drawings
Fig. 1 is electronic expansion valve structure schematic views provided by the invention；
Fig. 2 is needle structure schematic diagram provided by the invention；
Fig. 3 is the relational graph of the cone angle and minimum static pressure of electronic expansion valve needle third cone section provided by the invention；
Fig. 4 is the flow curve schematic diagram of electric expansion valve provided by the invention.
Specific implementation mode
It is below in conjunction with the accompanying drawings and specific real in order to make those skilled in the art more fully understand technical scheme of the present invention
Applying example, the present invention is described in further detail.
Fig. 1 is please referred to, Fig. 1 is electronic expansion valve structure schematic diagram provided by the invention.
It should be pointed out that the present invention be directed to the needle structures of the electric expansion valve of the prior art to be improved, for
General technology may be used in the other component of electric expansion valve, such as magnet rotor, lead screw, nut, stop device component,
It can also use other that the electronic expansion valve structure of identical function may be implemented.And the improvement institute band of electronic expansion valve needle structure
The technique effect come again relies on the other component structure of electric expansion valve product, for the ease of those skilled in the art understand that originally
Invention, therefore illustrated with a kind of electric expansion valve overall structure of typical structure, but the technical program is not to above-mentioned component
Structure be particularly limited, those skilled in the art can be applied to all according to the technical solution of present disclosure
On similar electronic expansion valve structure.
Electric expansion valve has valve seat 1, and metal cutting process forming may be used in valve seat 1, and is connected with the in its circumferential direction
One connecting tube 2, axial lower end is connected with the second connecting tube 3, and forms valve chamber 1b in the inside of valve seat 1, for refrigerant stream
It is logical.Valve port 1c is additionally provided on valve seat 1, valve port 1c is coordinated with needle 5, changes the circulating face between valve port 1c and needle 5
Product, to realize the accurate adjusting of flow.
In the top of valve seat 1, it is provided with the cover 4, the cover 4 is substantially cup-shaped, and bottom has opening, and connects with valve seat 1
Connect fixation.Specifically, can stage portion 1d be set in 1 upper end of valve seat, and by the bottom opening of the cover 4 and stage portion 1d
Cooperation, and implement welding and be fixed.
In the top of the cover 4, it is additionally provided with shell 15, the mode that welding may be used with the cover 4 for shell 15 is fixed,
In this way, being formed relatively closed space between shell 15, the cover 4, valve seat 1, and connected by the first connecting tube 2 and second
Pipe 3 carries out the adjusting of the circulation and flow of refrigerant.
In the space that shell 15 and the cover 4 are surrounded, it is provided with magnetic rotor component 14, magnetic rotor component 14 is used as stepping
The rotor of motor can incude and be rotated as the signal of the coil component of stator.Lead screw 16 is turned by connecting plate 17 and magnetic
Subassembly 14 is fixedly connected as an entirety, and specifically, lead screw 16 may be used with connecting plate 17 and be welded and fixed, magnetic rotor component
14 can be directly injection-moulded on connecting plate 17.
Floating connection is realized by sleeve part 25 between lead screw 16 and needle 5, sleeve part 25 is substantially cup-shaped, and bottom has
Opening portion 25b, needle 5 pass through opening 25b, into valve chamber in be in contact or detach with valve port.That is, working in electric expansion valve
In the process, needle 5 can be moved up and down with relative sleeve portion 25 in certain stroke, but can not be detached from the limitation of sleeve part 25.
The top of sleeve 25 is provided with end plate 10, end plate 10 is provided with end plate thrust face 10a, and the lower end of lead screw 16, which is fixed, to be connected
It is connected to boss 9, boss thrust face 9a is provided on boss 9, in assembly, after being first fixedly connected with boss 9 with lead screw 16
It is put into the inner space of sleeve part 25, is then again consolidated end plate 10 and sleeve part 25 using the such as modes such as welding
It is fixed.It is arranged oppositely in this way, boss thrust face 9a is formd with end plate thrust face 10a, and at the same time sleeve part 25 is suspended on silk
On bar 16.It can not be detached from, but can perform relative motion between sleeve part 25 and lead screw 16.Disengaging as described herein refers to sleeve
It both is separated into not no two separate parts of any restrictions each other between portion 25 and lead screw 16, and refers not only to without physically
Contact.
Nut 11 is fixed on by metal connection sheet 18 in the space that shell 15 is surrounded with the cover 4.Specifically,
Nut 11 may be used nonmetallic materials and be shaped with 18 integrated injection molding of connection sheet, and connection sheet 18 and the cover 4 are passed through welding
Mode is fixedly connected.
Nut 11 have along its axially through through-hole, and the inside of the through-hole be arranged internal thread 11a, correspondingly
, one section of external thread part 16a is provided on the peripheral surface of lead screw 16, in this way when magnetic rotor component 14 rotates, therewith
The lead screw 16 of linkage is under the action of screw thread pair, while rotating, goes back opposing nut and makees elevating movement, to drive
Needle 5 makees elevating movement, makes needle 5 closer or far from valve port 1c, to achieve the purpose that adjust the cold medium flux by valve port 1c.
The bottom of nut 11 is additionally provided with nut guide part 11c, and nut guide part 11c is for the outer rim with guide member 30
Portion is oriented to.
Fig. 2 is please referred to, Fig. 2 is that the present invention provides needle structure schematic diagram.
Needle 5 includes columned main part 5k, and the first cone section 5h with different tapers, the successively from top to bottom
Plug tap section 5q, third cone section 5m, the 4th cone section 5n, the cone angle (i.e. the angle of longitudinal cross-section) of the first cone section 5h is θ 1, and second bores
The cone angle of section 5q is θ 2, and the cone angle that third bores section 5m is θ 3, and the cone angle of the 4th cone section 5n is θ 4.The angle of wherein θ 2 is minimum, the
The angle of third hand tap section 5m is all bigger than the angle of the second cone section 5q and the 4th cone section 5n, i.e. 3 ＞ θ 2 of θ, 4 ＞ θ 2 of θ 3 ＞ θ 4, θ.
θ 2 corresponds to low pulse area, and low pulse area angle is smaller, and the precision of flow-rate adjustment is higher, minimum heating capacity or most
The small adjustable pulse area of refrigerating capacity is bigger, and the ability that air-conditioning adapts to complicated climate change is also stronger.Simultaneously as low open
Spend that region cold medium flux is smaller, and normal refrigerant flow noise is also smaller, narrow horn-like of the second cone section 5q and valve port composition one
Region, it is also smaller to the disturbance of refrigerant.
Under the conditions of normal refrigeration or heating, cold medium flux requirement is bigger, needs to use third cone section 5m at this time, due to
Refrigerant flowing velocity is very fast, and valve port it is expected that runner expands rapidly after most narrow place's throttling, and cone section angle is bigger, and runner is got over expanding
Soon, flow velocity can be thus reduced, avoids causing local static pressure too low since flow velocity is too fast, and prevents from causing since static pressure is too low cold
Matchmaker, which vaporizes, generates bubble.
Fig. 4 is please referred to, Fig. 4 is the flow curve schematic diagram of electric expansion valve.
The corresponding pulses of second cone section 5q are 50 (P1)~150 (P2), third bore the corresponding pulses of section 5m be 150 (P2)~
The corresponding pulse of 350 (P3), the 4th cone section 5n is 350 (P3)~500 (P4).Therefore, it is generally used for normally freezing or heating is logical
It is often between 150 (P2)~350 (P3) pulses, this section of frequency of use height, noise easy tos produce.In the present embodiment, increase
The cone angle of big third cone section 5m, is very beneficial for improving minimum static pressure.Minimum static pressure is higher, and liquid refrigerants is less susceptible to vaporize.
It is 3.0mpa with import pressure difference, outlet pressure difference is 1.2mpa, and third bores section 5m setting different cone angles θ 3 and minimum average B configuration static pressure
Relationship is as shown in Figure 3.
Third taper angle theta 3 is bigger, and minimum average B configuration static pressure is smaller, but when more than 50 °, and high impulse zone flow low precision can be led
350~500 pulse flow regions are caused to increase the aperture of valve, flow will not obviously increase, and reduce whole flow-rate adjustment precision.
Third taper angle theta 3 is too small, then poor to increasing average minimum static pressure effect, accordingly, it is preferred that 3 angle initializations of θ are 35 ° ± 10 °,
Corresponding umber of pulse is no more than 350 pulses.In general, after aperture increases to 350 pulse, since the aperture of valve at this time is larger,
Valve port restriction effect is weaker, and flow velocity is smaller, reduces the angle of θ 4, minimum static pressure will not be substantially reduced, in order to improve electronic expansion
The angle ratio θ 3 of valve entirety flow degree of regulation, θ 4 is small, and 4 angle ratio θ 3 of preferred θ are about 10 ° small.
It is said from noise angle and flow curve, the angle of θ 1 is the smaller the better, and the angle of one side θ 1 is small to may make flow
Flow-rate adjustment precision is high before the first inflection point on curve, is used under low pulse area convenient for electric expansion valve, on the other hand, θ 1
Angle it is small, no matter fluid forward flow or reverse flow, can all reduce disturbance of the needle to fluid, reduce noise.But θ 1
If angle it is too small, it is locked that it will cause needle and valve ports, and the angle initialization of θ 1 is 50 ± 15 ° more suitable.
For fluid regulation precision, the angle of θ 2 is the smaller the better, in the present embodiment, the setting of the angle of θ 23 °~
Between 10 °, length setting corresponding length, the corresponding length of preferably 150 pulses within 200 pulses in pulse.
The term positions such as upper and lower, left and right as described herein are to be described with reference view shown in FIG. 1, not
It should be understood as limitation of the present invention.
Electric expansion valve provided by the present invention is described in detail above.Specific case used herein is to this
The principle and embodiment of invention is expounded, the explanation of above example is only intended to help understand the present invention method and
Its core concept.It should be pointed out that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection of the claims in the present invention
In range.
Claims (9)
1. electric expansion valve, which is characterized in that including：
Valve seat (1), the valve seat (1) offer valve port (1c)；
Close to or away from the valve port (1c) to carry out the needle (5) of flow-rate adjustment to the electric expansion valve；
The needle (5) includes main part (5k) and cone angle that is adjacent with the main part (5k) and setting gradually is different
First cone section (5h), second cone section (5q), third cone section (5m) with the 4th cone section (5n).
2. electric expansion valve as described in claim 1, which is characterized in that the second cone section (5q), third cone section (5m), the
The cone angle of four cone sections (5n) meets following relationship：
4 ＞ θ 2 of θ 3 ＞ θ 2, θ 3 ＞ θ 4, θ；
Wherein, θ 2 is the cone angle of the second cone section (5q), and θ 3 is the cone angle that third bores section (5m), and θ 4 is the cone of the 4th cone section (5n)
Angle.
3. electric expansion valve as claimed in claim 2, which is characterized in that third cone section (5m) 3 angular range of taper angle theta be
35°±10°。
4. electric expansion valve as claimed in claim 2, which is characterized in that the taper angle theta 4 of the 4th cone section (5n) bores section than third
The cone angle of (5m) meets relationship：
10 ° of 4 ≈ of θ 3- θ.
5. electric expansion valve as described in claim 1, which is characterized in that the angle model of the taper angle theta 1 of the first cone section (5h)
Enclose is 50 ± 15 °.
6. electric expansion valve as described in claim 1, which is characterized in that the angle of the taper theta 2 of the second cone section (5q) is full
Sufficient relational expression：3°≤θ2≤10°.
7. electric expansion valve as described in claim 1, which is characterized in that the electric expansion valve further includes lead screw (16), institute
It states lead screw (16) and floating connection is realized by sleeve part (25) with the needle (5).
8. electric expansion valve as claimed in claim 7, which is characterized in that be provided with end plate at the top of the sleeve part (25)
(10), the lower end of the lead screw (16) is fixedly connected with boss (9).
9. electric expansion valve as claimed in claim 8, which is characterized in that the boss (9) is provided with boss thrust face (9a),
The end plate is provided with end plate thrust face (10a), and the boss thrust face (9a) sets with end plate thrust face (10a) opposite direction
It sets.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056865.3A CN108361393B (en) | 2017-01-26 | 2017-01-26 | Electronic expansion valve |
| PCT/CN2018/073923 WO2018137636A1 (en) | 2017-01-26 | 2018-01-24 | Electronic expansion valve |
| US16/478,422 US11261974B2 (en) | 2017-01-26 | 2018-01-24 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056865.3A CN108361393B (en) | 2017-01-26 | 2017-01-26 | Electronic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108361393A true CN108361393A (en) | 2018-08-03 |
| CN108361393B CN108361393B (en) | 2021-08-27 |
Family
ID=63011376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710056865.3A Active CN108361393B (en) | 2017-01-26 | 2017-01-26 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108361393B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022233322A1 (en) * | 2021-05-07 | 2022-11-10 | 浙江盾安人工环境股份有限公司 | Expansion valve |
| WO2023030409A1 (en) * | 2021-09-02 | 2023-03-09 | 浙江盾安人工环境股份有限公司 | Valve needle and electronic expansion valve having same |
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| JP2000320429A (en) * | 1999-05-13 | 2000-11-21 | Denso Corp | Fuel injection nozzle |
| JP2005201272A (en) * | 2004-01-13 | 2005-07-28 | Delphi Technologies Inc | Injection nozzle |
| EP2071178A1 (en) * | 2007-12-10 | 2009-06-17 | Delphi Technologies, Inc. | Injection nozzle |
| CN202149235U (en) * | 2011-07-08 | 2012-02-22 | 浙江三花股份有限公司 | Electrically-operated valve |
| JP2012037192A (en) * | 2010-08-11 | 2012-02-23 | Mitsubishi Electric Corp | Electronic expansion valve, and air conditioner with the same |
| CN103946651A (en) * | 2011-11-18 | 2014-07-23 | 大金工业株式会社 | Electronic expansion valve, and air conditioner |
| CN105276875A (en) * | 2014-07-24 | 2016-01-27 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| CN106322861A (en) * | 2015-06-29 | 2017-01-11 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
-
2017
- 2017-01-26 CN CN201710056865.3A patent/CN108361393B/en active Active
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|---|---|---|---|---|
| JP2000320429A (en) * | 1999-05-13 | 2000-11-21 | Denso Corp | Fuel injection nozzle |
| JP2005201272A (en) * | 2004-01-13 | 2005-07-28 | Delphi Technologies Inc | Injection nozzle |
| EP2071178A1 (en) * | 2007-12-10 | 2009-06-17 | Delphi Technologies, Inc. | Injection nozzle |
| JP2012037192A (en) * | 2010-08-11 | 2012-02-23 | Mitsubishi Electric Corp | Electronic expansion valve, and air conditioner with the same |
| CN202149235U (en) * | 2011-07-08 | 2012-02-22 | 浙江三花股份有限公司 | Electrically-operated valve |
| CN103946651A (en) * | 2011-11-18 | 2014-07-23 | 大金工业株式会社 | Electronic expansion valve, and air conditioner |
| CN105276875A (en) * | 2014-07-24 | 2016-01-27 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022233322A1 (en) * | 2021-05-07 | 2022-11-10 | 浙江盾安人工环境股份有限公司 | Expansion valve |
| WO2023030409A1 (en) * | 2021-09-02 | 2023-03-09 | 浙江盾安人工环境股份有限公司 | Valve needle and electronic expansion valve having same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108361393B (en) | 2021-08-27 |
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