CN207213305U - Electric expansion valve - Google Patents
Electric expansion valve Download PDFInfo
- Publication number
- CN207213305U CN207213305U CN201721194122.4U CN201721194122U CN207213305U CN 207213305 U CN207213305 U CN 207213305U CN 201721194122 U CN201721194122 U CN 201721194122U CN 207213305 U CN207213305 U CN 207213305U
- Authority
- CN
- China
- Prior art keywords
- needle
- steel ball
- screw mandrel
- valve
- 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.)
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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
-
- 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
- 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
- F16K1/42—Valve seats
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Lift Valve (AREA)
Abstract
Electric expansion valve includes：Valve seat, valve seat, which is provided with valve port and valve seat, forms valve support chamber；Needle, needle can open or close valve port to carry out Flow-rate adjustment to the refrigerant for flowing through valve port；Screw mandrel, screw mandrel carry out floating connection by sleeve and needle；Nut, nut are coordinated with screw mandrel by screw thread；Sleeve also includes supporting part, steel ball is provided between supporting part and needle, steel ball has what aligning effect prevented screw mandrel during electric expansion valve start to tilt that steel ball applies to needle simultaneously active force is smaller to be reduced mutual rotation torque and reduce further rotating for needle to screw mandrel, to prevent needle from being worn to caused by valve port.
Description
Technical field
It the utility model is related to refrigeration system 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, its work
Process is generally：With the energization or power-off of the coil device as stator, drive and rotated as the magnetic rotor component of rotor, with
The screw mandrel that magnet rotor is fixedly connected and followed magnet rotor to rotate drives valve needle movements, and nut part is provided with electric expansion valve,
Nut part is provided with female thread structure, correspondingly, external thread structure is provided with screw mandrel, by the cooperation of screw thread pair,
Screw mandrel is set also to drive needle to make elevating movement while rotating, in a manner of adjusting the aperture between needle and valve port
To adjust the flow for the refrigerant for flowing through valve port, so as to realize systemic-function and reach the purpose accurately controlled.
Electric expansion valve in refrigeration systems in use, the pressure of vibration and the refrigerant pulse of compressor, can to needle or
Screw mandrel brings certain impact, and electric expansion valve screw mandrel during start may carry out the deflection of certain angle so as to influence
Start reliability, and the drive screw for being driven part drives during valve port is opened and closed needle in the axial direction, applies
Adding to that the active force of needle is larger, needle easily follows rotation so as to cause the abrasion of screw thread pair and the abrasion of valve port part,
Therefore how to design a kind of active force for preventing screw mandrel deflection being while applied to needle it is smaller with prevent valve port abrasion electronics it is swollen
Swollen valve arrangement, it is the technical problem of those skilled in the art's urgent need to resolve.
The content of the invention
For the technical problems to be solved in the utility model to provide a kind of electric expansion valve, the electric expansion valve is able to ensure that silk
The reliability of bar axial direction start prevents its deflection, while applies the rotation torque of less active force reduction from each other to needle
To reduce the rotation of needle, prevent the abrasion of valve port, further improve product service life, therefore, the utility model use with
Lower technical scheme：
Electric expansion valve includes：
Valve seat, valve seat, which is provided with valve port and valve seat, forms valve support chamber；
Needle, needle can open or close valve port to carry out Flow-rate adjustment to the refrigerant for flowing through valve port；
Screw mandrel, screw mandrel carry out floating connection by sleeve and needle；
Nut, nut are coordinated with screw mandrel by screw thread；
Also include supporting part in sleeve, steel ball is provided between supporting part and needle.
Supporting part includes support lugn portion, and needle includes flange part, steel ball is provided between support lugn portion and flange part.
Support lugn portion is provided with concave part, and flange part is provided with arc groove portion, and concave part substantially wraps up steel ball with arc groove portion.
The diameter of steel ball is more than the depth of concave part or arc groove portion, and steel ball is supported with concave part and arc groove portion
Connect.
Support lugn portion is provided with arc groove portion, and flange part is provided with concave part, and arc groove portion substantially wraps up steel ball with concave part.
The diameter of steel ball is more than arc groove portion or the depth of concave part, steel ball are supported with arc groove portion and concave part
Connect.
Steel ball and supporting part are contacted for point or contact structure.
Steel ball and needle are contacted for point or contact structure.
Sleeve has sleeve cavity, is provided with end plate, boss, spring in sleeve cavity, spring is supported by supporting part, boss
Screw mandrel is fixedly connected on, when electric expansion valve start, screw mandrel 8 drives boss, spring and supporting part to rotate together, and steel ball can
Rotated relative to screw mandrel.
Electric expansion valve includes：
Valve seat, valve seat, which is provided with valve port and valve seat, forms valve support chamber；
Needle, needle can open or close valve port to carry out Flow-rate adjustment to the refrigerant for flowing through valve port；
Screw mandrel, screw mandrel carry out floating connection by sleeve and needle；
Nut, nut are coordinated with screw mandrel by screw thread；
Sleeve has sleeve cavity, is provided with end plate, boss, spring, supporting part in sleeve cavity, spring is propped up by supporting part
Support, steel ball is provided between supporting part and the needle.
Brief description of the drawings
Fig. 1 is a kind of embodiment overall structure schematic views of electric expansion valve provided by the utility model；
Fig. 2 is the steel ball fit structure enlarged diagram of electric expansion valve provided by the utility model；
Fig. 3 is the steel ball fit structure enlarged diagram of electric expansion valve provided by the utility model.
Embodiment
In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with the accompanying drawings and have
The utility model is described in further detail for body embodiment.
Fig. 1 is refer to, Fig. 1 is that the overall structure of electric expansion valve one of which embodiment provided by the utility model is shown
It is intended to.
It is pointed out that the utility model is the needle of electric expansion valve and the cooperation knot of screw mandrel for prior art
Structure is improved, and for the miscellaneous part of electric expansion valve, such as magnet rotor, nut, stop device part can use
General technology, other can also be used to realize the electronic expansion valve structure of identical function.The utility model is not to upper
The structure for stating part is particularly limited, the technical scheme that those skilled in the art disclose according to the utility model, can be by it
Applied on all similar electronic expansion valve structures.
Electric expansion valve has valve seat 1, and valve seat 1 can use metal cutting process to shape, and its underpart and sidepiece are opened respectively
Provided with connector, the first adapter 3 and the second adapter 2, the first adapter 3 or the second adapter have been respectively fixedly connected with the connector
2 can serve as inlet tube or outlet, and for valve seat 1 formed with valve support chamber, bottom is additionally provided with the valve port 1a coordinated with needle 14,
The lower needle 14 of driving part driving is remote or contact valve port 1a is with the refrigerant progress Flow-rate adjustment to flowing through valve port 1a.
The top of valve seat 1 is fixedly connected with cover portions 4, and the shell 5 of cylindrical shape, valve seat 1, cover lid 4 are fixedly connected with cover lid 4
And the three of shell 5 constitutes the inner chamber of a relative closure.The inner chamber includes rotor 6, connecting seat 7 and screw mandrel 8, screw mandrel
8 are relatively fixed and are connected in the axial direction by connecting seat 7 with rotor 6, at the same screw mandrel 8 by connecting seat 7 and rotor 6 form one it is whole
Body, screw mandrel 8 can be fixedly connected on connecting seat 7 by modes such as welding, and connecting seat 7 can be with the integrated injection molding of rotor 6.Silk
The outer edge of bar 8 forms the external thread part 8a screwed togather with the internal thread part of nut 9, and the center of nut 9 is oriented to formed with nut
The translating rotation of rotor in the circumferential is by hole to be oriented to screw mandrel 8, by the screw thread mating reaction of screw mandrel 8 and nut 9
The motion of screw mandrel 8 in the axial direction is so as to driving needle 14 to open or close valve port 1a.Nut 9 is provided with connection sheet, connection sheet
Cover lid 4 can be fixedly connected on by connection sheet with the integrated injection molding of nut 9, nut 9, screw mandrel 8 passes through sleeve 16 and needle
14 carry out floating connections, sleeve 16 substantially be in bottom belt opening goblet, needle 14 through the opening enter valve support chamber in
Valve port 1a contacts or remote.Sleeve 16 has sleeve cavity, is provided with end plate 10 at the top of sleeve cavity, end plate 10 is provided with end
Plate thrust face 10a, the bottom of screw mandrel 8 are fixedly connected with boss 11, and boss 11 is provided with boss thrust face 11a, can in assembling
To be placed into after sleeve cavity after being fixedly connected with screw mandrel 8 and boss 11 again by end plate 10 and sleeve 16 for example, by the side such as welding
Formula is fixedly connected.Boss thrust face 11a and end plate thrust face 10a is formed and is arranged oppositely, and sleeve 16 is suspended on into screw mandrel 8
On, the lower section of boss 11 is additionally provided with spring 12, and spring 12 is supported by supporting part 13, is set between supporting part 13 and needle 14
There is steel ball, pad is provided between needle 14 and sleeve 16, needle 14 is suspended on sleeve 16, it is necessary to which what is illustrated is swollen in electronics
In swollen valve running, needle 6 with relative sleeve 15 can move but can not departed from from sleeve 15, i.e., needle 14 includes
Body and flange part 14a, flange part 14a external diameter are more than the external diameter of the bottom opening of sleeve 16 to prevent needle 14 from sleeve 16
On come off.
A kind of embodiment provided by the utility model, in the present embodiment, needle 14 are shown referring to Figures 1 and 2
Pad is provided between sleeve 16 to reduce the frictional force between needle 14 and sleeve 16, supporting part 13 includes body and branch
Flange part 131 is supportted, the diameter in support lugn portion 131 is more than the body diameter of supporting part 13, and the diameter in support lugn portion 131 is big
In or equal to spring 12 diameter so that spring 12 can be supported in supporting part 13.Flange part 14a offer arc groove portion 141a with
Fit and abut with the spherical bottom of steel ball 15, the support lugn portion 131 of supporting part 13 offer concave part 1311 with steel ball
15 spherical upper surface abuts against, and concave part 131 and arc groove portion 141a substantially wrap up whole steel ball 15, it is necessary to which explanation is steel
The diameter of ball 15 is more than arc groove portion 141a depth, and such steel ball 15 can expose the flange part 14a of needle 14 upper surface
Abutted against with supporting part 13, or steel ball 15 external diameter be more than concave part 131 depth, such steel ball 15 can expose support it is convex
The lower surface of edge 132 abuts against with flange part 141a.The material of steel ball 15 can be that SUS440C can certainly be that ceramics wait it
His material, does not make particular determination in the utility model to the material of steel ball.It should be noted that when the fortune of electric expansion valve
During row, by giving step motor stator pulse command, driving rotor 6 rotates, and then rotor driven 8 rotates, in screw thread pair
Under effect, drive needle 14 to do axial elevating movement, because screw mandrel 8 itself is rotating, therefore inevitably naturally give
14 1 rotating torques of needle, when needle 14 and valve port 1a not contact conditions, needle 14, sleeve 16 and screw mandrel 8 can be with one
Rise and rotate；When needle 14 is in contact with valve port 1a, valve port 1a is in closed valve state, and traffic driven is in 0, when critical valve opening point
Afterwards, flow increases as pulse increases, and using critical valve opening point as boundary, now the sealing surface of needle 14 and both valve port 1a is firm
Rigid connection is touched, and in order to improve product reliability, now it is expected that needle 14 does not rotate, that is, it is expected that screw mandrel 8 rotates, and needle
14 do not rotate.And now, boss thrust face 11a and end face thrust face 10a are also exactly in contact condition, spring force and valve
Atmospheric pressure suffered by pin 14 can be acted between boss thrust face 11a and end plate thrust face 10a, in order that screw mandrel 8 is with respect to needle
14 rotate, and need to just reduce the frictional force between end plate 10 and boss 11 as far as possible, typically can be in end plate thrust face 10a or convex
The modes such as friction coat are applied on platform thrust face 11a to be achieved, and steel ball 15 is provided between needle 14 and supporting part 13, in electricity
During sub- expansion valve start, screw mandrel 8 can drive boss 11, spring 12 and support member 13 to be revolved as an entirety with respect to steel ball 15
Turn, in general steel ball 15 is also rotated relative to screw mandrel under active force, but because being connect between steel ball 15 and supporting part 13 for point
Touch or contact structure rotates so as to reduce, when then active force is further applied to needle 14 by steel ball 15, because of steel ball 15
Also contact between needle 14 for point or linear contact lay acts on, the active force that steel ball 15 is applied to needle 14 also smaller reduces needle
Further rotated in 14 start after critical valve opening point or after critical valve closing point, it is necessary to which what is illustrated is steel ball 15 and needle
14 elements relatively independent as two can not turn to rotate against relatively yet, not turn relatively generally, even if rotating against
When, the active force that steel ball 15 is applied to needle 14 is also very small, reduces the rotation of needle 14.Needle 14 is reduced to valve port 1a
Abrasion, while the presence of steel ball 15 reduces supporting part 13 and the resistance of needle 14 from each other, because the setting of steel ball 15 makes
There is certain activity space between supporting part 13 and needle 14, can when screw mandrel 8 has certain deflection during start
Aligned by the activity space, i.e., steel ball 15 also has aligning effect to prevent the deflection during screw mandrel start screw mandrel 8.
Referring to Fig. 3, Fig. 3 is another embodiment provided by the utility model, the embodiment and above-mentioned implementation
The difference that mode is stated is the fit structure being used for steel ball 15 of supporting part 13 and needle 14, is supported in the embodiment
The support lugn portion 131 in portion 13 is provided with arc groove portion 141a ', and concave part 1311 ' is offered on the flange part 14a of needle 14.
The entirety of steel ball 15 is roughly wrapped up and abutted together by the arc groove portion 141a ' and concave part 13111 '.The diameter of steel ball 15 is big
It is more than the depth of concave part 13111 ' in arc groove portion 141a ' depth or the diameter of steel ball 15.Steel ball 15 and needle 14 it
Between formed point contact or contact structure, remaining related elements structurally and functionally described one by one in the above,
This is repeated no more.
It should be noted that technical scheme provided by the utility model focuses on protecting the related elements knot in sleeve 16
Structure and screw mandrel 8 are by carrying out the structure of floating connection between sleeve 16 and needle 14, as other electronic expansion valve components examples
Such as nut, rotor, valve seat can also be applied to other classes without particular determination, related art scheme provided by the utility model
As needle by screw mandrel band action axial direction on elevating movement structure electronic expansion valve structure in.
On the one hand the utility model plays aligning work by the steel ball structure set between supporting part and needle to screw mandrel
With, even in screw mandrel occur certain deflection when also by corresponding activity space align, between another aspect steel ball and supporting part
Or contact or contact structure for point between steel ball and needle, screw mandrel drive boss, screw mandrel when electric expansion valve carries out start
And supporting part as an integral-rotation start when reduce rotary torsion between steel ball, then steel ball applies to needle
Active force also further reduce, further reduce abrasion of the needle to valve port.The orientation such as upper and lower, left and right as described herein name
Word, it is to be described with the reference view shown in Fig. 1, should not be interpreted as to limitation of the present utility model.
Electric expansion valve provided by the utility model is described in detail above.Specific case used herein
Principle of the present utility model and embodiment are set forth, the explanation of above example is only intended to help and understands this practicality
New method and its core concept.It should be pointed out that for those skilled in the art, this reality is not being departed from
On the premise of with new principle, some improvement and modification can also be carried out to the utility model, these are improved and modification is also fallen into
In the protection domain of the utility model claims.
Claims (10)
1. electric expansion valve, it is characterised in that including：
Valve seat (1), the valve seat (1), which is provided with valve port (1a) and the valve seat (1), forms valve support chamber；
Needle (14), the needle (14) can open or close the valve port (1a) to enter to the refrigerant for flowing through the valve port (1a)
Row Flow-rate adjustment；
Screw mandrel (8), the screw mandrel (8) carry out floating connection by sleeve (16) and the needle (14)；
Nut (9), the nut (9) are coordinated with the screw mandrel (8) by screw thread；
Also include supporting part (13) in the sleeve (16), steel ball is provided between the supporting part (13) and the needle (14)
(15)。
2. electric expansion valve according to claim 1, it is characterised in that the supporting part (13) includes support lugn portion
(131), the needle (14) includes flange part (14a), is set between the support lugn portion (131) and the flange part (14a)
It is equipped with steel ball (15).
3. electric expansion valve according to claim 2, it is characterised in that the support lugn portion (131) is provided with concave part
(1311), the flange part (14a) is provided with arc groove portion (141a), the concave part (1311) and the arc groove portion (141a)
Substantially wrap up the steel ball (15).
4. electric expansion valve according to claim 3, it is characterised in that the diameter of the steel ball (15) is more than the groove
Portion (1311) or the depth of the arc groove portion (141a), the steel ball (15) and the concave part (1311) and the arc
Groove portion (141a) is abutted respectively.
5. electric expansion valve according to claim 2, it is characterised in that the support lugn portion (131) is provided with deep-slotted chip breaker
Portion (141a '), the flange part (14a) are provided with concave part (1311 '), the arc groove portion (141a ') and the concave part
(1311 ') substantially wrap up the steel ball (15).
6. electric expansion valve according to claim 5, it is characterised in that the diameter of the steel ball (15) is more than the arc
The depth of groove portion (1311 ') or the concave part (141a '), the steel ball (15) and the arc groove portion (1311 ') and institute
Concave part (141a ') is stated to be abutted respectively.
7. according to the electric expansion valve described in claim 2-6 any one, it is characterised in that the steel ball (15) and the branch
Support part (13) is point contact or contact structure.
8. according to the electric expansion valve described in claim 2-6 any one, it is characterised in that the steel ball (15) and the valve
Pin (14) is point contact or contact structure.
9. electric expansion valve according to claim 1, it is characterised in that the sleeve (16) has sleeve cavity, the set
End plate (10), boss (11), spring (12) are provided with barrel chamber, the spring is supported by supporting part (13), the end plate
Portion (10) is provided with end plate thrust face (10a), and the boss (11) is provided with boss thrust face (11a), the end plate thrust face (10a)
It is arranged oppositely with the boss thrust face (11a), the boss (11) is fixedly connected on the screw mandrel (8), works as electric expansion valve
During start, the screw mandrel (8) drives boss (11), spring (12) and supporting part (13) to rotate together so that steel ball (15) can phase
Screw mandrel (8) is rotated.
10. electric expansion valve, it is characterised in that including：
Valve seat (1), the valve seat (1), which is provided with valve port (1a) and the valve seat (1), forms valve support chamber；
Needle (14), the needle (14) can open or close the valve port (1a) to enter to the refrigerant for flowing through the valve port (1a)
Row Flow-rate adjustment；
Screw mandrel (8), the screw mandrel (8) carry out floating connection by sleeve (16) and the needle (14)；
Nut (9), the nut (9) are coordinated with the screw mandrel (8) by screw thread；
The sleeve 16 has sleeve cavity, and end plate 10, boss 11, spring 12, supporting part 13 are provided with the sleeve cavity, described
Spring is supported by supporting part 13, and steel ball (15) is provided between the supporting part (13) and the needle (14).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721194122.4U CN207213305U (en) | 2017-09-18 | 2017-09-18 | Electric expansion valve |
| PCT/CN2018/106153 WO2019052570A1 (en) | 2017-09-18 | 2018-09-18 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721194122.4U CN207213305U (en) | 2017-09-18 | 2017-09-18 | Electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207213305U true CN207213305U (en) | 2018-04-10 |
Family
ID=61821258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721194122.4U Active CN207213305U (en) | 2017-09-18 | 2017-09-18 | Electric expansion valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN207213305U (en) |
| WO (1) | WO2019052570A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019052570A1 (en) * | 2017-09-18 | 2019-03-21 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| 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 |
| CN111765251A (en) * | 2019-03-30 | 2020-10-13 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN111827927A (en) * | 2020-07-08 | 2020-10-27 | 成都天晨压缩机制造有限公司 | Liquid impact prevention device of equipment for gathering and transporting liquid-containing oil wellhead gas in desert oil field |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5687949A (en) * | 1996-04-26 | 1997-11-18 | Controls Corporation Of America | Gas flow regulator valve |
| CN102042416B (en) * | 2009-10-09 | 2012-11-21 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN102644785B (en) * | 2011-02-17 | 2014-04-30 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN102213509B (en) * | 2011-06-02 | 2017-04-12 | 上海俊乐制冷自控元件有限公司 | Electronic expansion valve |
| CN103575000B (en) * | 2012-08-10 | 2017-03-01 | 浙江三花智能控制股份有限公司 | A kind of electric expansion valve |
| CN103883749B (en) * | 2012-12-24 | 2016-03-23 | 艾默生环境优化技术(苏州)有限公司 | Valve needle assembly and electronic expansion valve comprising same |
| CN104132149B (en) * | 2013-05-02 | 2017-09-01 | 浙江三花智能控制股份有限公司 | A kind of motor-driven valve |
| CN207213305U (en) * | 2017-09-18 | 2018-04-10 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
-
2017
- 2017-09-18 CN CN201721194122.4U patent/CN207213305U/en active Active
-
2018
- 2018-09-18 WO PCT/CN2018/106153 patent/WO2019052570A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019052570A1 (en) * | 2017-09-18 | 2019-03-21 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| 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 |
| CN111765251A (en) * | 2019-03-30 | 2020-10-13 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN111765251B (en) * | 2019-03-30 | 2023-08-01 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN111827927A (en) * | 2020-07-08 | 2020-10-27 | 成都天晨压缩机制造有限公司 | Liquid impact prevention device of equipment for gathering and transporting liquid-containing oil wellhead gas in desert oil field |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019052570A1 (en) | 2019-03-21 |
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