CN106870750A - Two-period form electric expansion valve - Google Patents
Two-period form electric expansion valve Download PDFInfo
- Publication number
- CN106870750A CN106870750A CN201510916436.XA CN201510916436A CN106870750A CN 106870750 A CN106870750 A CN 106870750A CN 201510916436 A CN201510916436 A CN 201510916436A CN 106870750 A CN106870750 A CN 106870750A
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- Prior art keywords
- valve
- electric expansion
- cavity
- period form
- form electric
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Classifications
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- 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
- F16K1/52—Means for additional adjustment of the rate of flow
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- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
Two-period form electric expansion valve, including valve seat, sleeve pipe, nut and stop component, magnetic rotor component is arranged on inside described sleeve pipe, and drive screw mandrel to rotate, the screw mandrel is coordinated with the nut by screw thread pair, it is characterized in that, also include valve element, the valve element is arranged in the valve pocket of the valve seat, first valve port of the valve element to being arranged on the valve seat under the drive of the screw mandrel is opened or closed, the valve core inside is additionally provided with low discharge governor motion, the low discharge governor motion is made up of the second valve port for being arranged on the needle of the valve core inside He be arranged on the valve element.The two-period form electric expansion valve that the present invention is provided, the second valve port is smaller, therefore under the conditions of same umber of pulse, flow adjustment range is wider, and degree of regulation is higher；Fluid flows to the first valve port by the sound attenuation features of mesh first, and fluid is acted on by multilayer mesh and fully broken up, and so as to eliminate the vortex of the similar sound that screams, reduces noise.
Description
Technical field
It is the present invention relates to control valve technology field more particularly to a kind of for adjusting fluid flow
Electric expansion valve.
Background technology
In all kinds of refrigeration such as air-conditioning, refrigerator, Teat pump boiler, heating equipment, generally use
The flow of electronic expansion valve regulation fluid.In addition, electric expansion valve can also be answered as pilot valve
For in magnetic valve, its basic functional principle to be adjusted by controlling the aperture of electric expansion valve
Gas/liquid flow, so as to realize systemic-function and reach the purpose of precise control.
Electric expansion valve generally includes valve component, nut assembly, needle screw component, rotor
Component, valve component generally includes valve seat and connecting tube, has valve port, valve seat and company on valve seat
Adapter generally integrally welded composition valve component, the needle of needle screw component is arranged on nut
In the nut of component.
In the course of work of electric expansion valve, noise problem be always those skilled in the art not
It is disconnected to find the problem that various schemes are wanted to be solved, in order to reduce the noise of electric expansion valve,
Applicant proposes in the patent application of Application No. 201110374661.7 and is set on valve seat
Valve core case 11', Fig. 1 are a kind of structural representations of electric expansion valve of prior art.Such as Fig. 1
Shown, electric expansion valve includes valve component, needle 21'；Valve component includes being provided with the first valve
The valve seat 12' of chamber 121' and the substantially cylindrical valve element with valve port being fixed on valve seat 12'
Seat 11', valve core case 11' be internally formed for fluid circulation the second valve pocket, the second valve pocket with
First valve pocket is additionally provided with the guiding for being engaged with needle 21' by intercommunicating pore 113' valve core cases
Section, the internal diameter of the internal diameter less than the second valve pocket of guide section.Top guide section is set on nut 32'
With bottom guide section, valve core case 11' and valve seat 12' and the first adapter being fixed on valve seat 12'
13', the second adapter 14' collectively form valve base part, and the inner chamber of valve seat 12' forms the first valve pocket
121', the periphery wall of the upper end of valve core case 11' coordinates with the lower end internal perisporium of nut 32' to be fixed,
The internal perisporium of the upper end of valve core case 11' forms gap and coordinates with needle 21', and needle 21' is provided
It is oriented to.Also, the screw mandrel 22' that the upper end pair of nut 32' is fixed as one with needle provides guiding.
Electric expansion valve operationally, magnet rotor is driven by magnet coil (not shown)
Rotation, drives screw mandrel 22' rotations, between screw mandrel 22' and nut 32' in the presence of screw thread pair,
Screw mandrel 22' makees elevating movement simultaneously in rotary course, so as to drive needle 21' to move closer to valve
Mouthful or away from valve port, so as to being adjusted to flow.
In above-mentioned electric expansion valve, low discharge when being completely closed from valve port to the initial stage was adjusted
Cheng Zhong, because aperture is smaller at valve port, can substantially produce throttling so that flow through the stream of valve port part
Body is significantly accelerated and the vortex of CF occurs and form abnormal sound, have impact on final use
The usage comfort at family.When valve port is larger simultaneously, low discharge adjustable range is narrower, is not easy to more
Accurate regulation.
Therefore, how to design and reduce noise when a kind of low discharge is adjusted, and accurate tune can be realized
The electric expansion valve of section, is those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to provide a kind of two-period form electric expansion valve, to realize that low discharge is adjusted
When reduce noise, and the fine adjustment in low discharge stage can be realized.Therefore, the present invention takes
Following technical scheme：
Two-period form electric expansion valve, including valve seat, the sleeve pipe that is sleeved on the valve seat, are set
Nut and stop component inside described sleeve pipe, magnetic rotor component are arranged in described sleeve pipe
Portion, and drive screw mandrel to rotate, the screw mandrel is coordinated with the nut by screw thread pair, its feature
It is,
Also include valve element, the valve element is arranged in the valve pocket of the valve seat, and the valve element is in institute
State the first valve port under the drive of screw mandrel to being arranged on the valve seat to open or close, institute
State valve core inside and be additionally provided with low discharge governor motion, the low discharge governor motion is by being arranged on
The needle of the valve core inside and the second valve port composition being arranged on the valve element.
The valve element is cylindrical in shape, and its two ends is respectively arranged with the first cavity and the second cavity, described
Second valve port is opened between first cavity and the second cavity.
The needle is connected with the screw mandrel by packing ring and limiting section.
The upper end of the needle is fixedly connected with the packing ring, and the bottom of the screw mandrel passes through
The packing ring is stretched into the inner chamber of the needle, and the bottom of the screw mandrel is fixedly connected limited location
Portion.
Stop part is provided with the top of first cavity, the stop part passes through with the valve element
The mode of welding or riveting is fixed.
The valve element has an opening, and the opening is by first cavity and the valve pocket phase
Connection.
The first sound attenuation features are provided with second cavity so that flowed into from the opening
Fluid flows out from the first valve port again after carrying out noise reduction through the first sound attenuation features.
The second sound attenuation features are additionally provided with first cavity.
Second sound attenuation features are adapted in annular shape, the shape with first cavity.
Second sound attenuation features are cylindrical, the through hole opened up in the valve element circumference
In.
Normal open device is additionally provided between first cavity and second cavity.
The normal open device is normal open hole or the stream being arranged on the first valve port internal perisporium
Groove.
The two-period form electric expansion valve that the present invention is provided, the second valve port is smaller, therefore in same pulse
Under said conditions, flow adjustment range is wider, and degree of regulation is higher；Due to adjusting section in low discharge,
Remained between the bottom of valve element and the first valve port and contacted, fluid is by needle and the second valve
After between mouthful, the first valve port is flowed to by the sound attenuation features of mesh first, fluid receives multilayer mesh
Act on and fully broken up, so as to eliminate the vortex of the similar sound that screams, reduce noise.
Brief description of the drawings
Fig. 1：A kind of structural representation of electric expansion valve of prior art；
Fig. 2：The two-period form electronic expansion valve structure schematic diagram of first embodiment of the invention；
Fig. 3：The two-period form electronic expansion valve structure schematic diagram of second embodiment of the invention；
Fig. 4：The two-period form electronic expansion valve structure schematic diagram of third embodiment of the invention；
Fig. 5：The two-period form electronic expansion valve structure schematic diagram of four embodiment of the invention.
Specific embodiment
In order that those skilled in the art is better understood from technical scheme, tie below
The present invention is described in further detail to close the drawings and specific embodiments.
First embodiment：
Fig. 2 is refer to, Fig. 2 is the two-period form electric expansion valve knot of first embodiment of the invention
Structure schematic diagram.
Two-period form electric expansion valve include valve seat 1, sleeve pipe 2, valve seat 1 have valve pocket 11 and
First valve port 12, sleeve pipe 2 is sleeved on valve seat 1, and by being welded and fixed, so that two sections
Formula electric expansion valve forms cannula cavity 21, in cannula cavity 21, is provided with nut 3, spiral shell
Female 3 are fixedly connected with valve seat 1.In the present embodiment, nut 3 can be using plastics integrally
Injection moulding, and be embedded with metal connecting sheet 31, specifically, metal connecting sheet 31 and spiral shell
Female 3 are formed integrally by way of injection moulding, then by way of welding or crimping,
Metal connecting sheet 31 is fixed in valve seat 1, so, nut 3 is just fixed on valve seat 1
On.
Spring guide rail 32 is fixedly installed in the epimere peripheral part of nut 3, slip ring 33 can be in bullet
Make helical form rotation on spring guide rail 32, also, spring guide rail 32 has upper retainer and stops down
Dynamic portion, when slip ring 33 is rotated up to extreme position, abuts with the upper retainer of spring guide rail
And stop, when slip ring 33 is swung down to extreme position, the lower retainer with spring guide rail is supported
Connect and stop, so as to limit the stroke of electric expansion valve.Spring guide rail 32 and slip ring 33 are with regard to structure
Into stop component.
Screw mandrel 4 is fixedly connected with magnetic rotor component, and specifically, magnetic rotor component turns including magnetic
Son 5 and the connecting seat 51 and arresting lever 52 that are fixed as one with magnet rotor 5.Arresting lever
52 are fixedly connected on connecting seat 51, and the section of arresting lever 52 is in " L " shape, and its side long passes through and connects
Through hole on joint chair 51 is stretched into the inner chamber of the formation of magnet rotor 5, inconsistent with slip ring 33.
When magnet rotor 5 rotates, screw mandrel 4 and arresting lever 52 is driven to rotate together.
Screw mandrel 4 is located in the centre bore of nut 3, and the centre bore of nut has smooth guiding
Section and internal thread segment, and screw mandrel 4 then has external thread section, by the cooperation of screw thread pair, will
The convert rotational motion of magnet rotor 5 for screw mandrel 4 elevating movement, and lift stroke then by
The upper retainer of spring guide rail 32 and lower retainer determine.
Valve element 6 is provided with valve pocket 11, valve element 6 is generally cylindrical, its bottom can be with the
One valve port 12 is abutted against or separated, to realize the opening and closing of the first valve port 12.Valve element 6
Inside there is the first cavity 61 and the second cavity 62, the first cavity 61 and the second cavity 62
Between be provided with the second valve port 63.Needle 41, needle 41 are provided with the first cavity 61
Elevating movement can be made relative to the first cavity 61 and contacted or away from the second valve port 63, so that real
The regulation of the existing aperture of second valve port 63.
Connection is realized between screw mandrel 4 and needle 41 by packing ring 66 and limiting section 67.Tool
Body ground, the inside of needle 41 is in hollow tube-shape, and upper end is provided with packing ring 66, packing ring 66 and valve
Pin 41 is fixedly connected, during the inner chamber of needle 41 is stretched into the bottom of screw mandrel 4 through packing ring 66,
The bottom of limiting section 67, limiting section 67 and needle inner chamber is fixedly connected with the bottom of screw mandrel 4
Spring 68 is provided between portion.So, screw mandrel 4 can be moved down relative to needle 41,
But when screw mandrel 4 continuation on move when, limiting section 67 is resisted against on packing ring 66, prevent screw mandrel 4 from
It is further continued for being moved relative to valve element 6.
Stop part 65 is additionally provided with the top of the first cavity 61, stop part 65 can with valve element 6
It is fixedly connected with by welding, riveting or other modes.Due to the setting of stop part 65, make
Packing ring 66 can not depart from valve element 6, and the distance between packing ring 66 and stop part 65 are formed
The movement travel of needle 41, i.e., limited screw mandrel 4 by packing ring 66 and stop part 65 and moved up
Limiting length.So, screw mandrel 4 is further driven to needle 41 under the drive of magnet rotor 5
Moved up and down in valve element 6, to adjust the aperture of the second valve port 63.The valve of needle 41 and second
Mouth 63 just constitutes low discharge governor motion.
Valve element 6 has opening 611, and with valve pocket 11 be connected the first cavity 61 by the opening
It is logical.
In the second valve pocket 62, the first sound attenuation features 64 are provided with, the first sound attenuation features 64 can
It is made with using the mode such as screen cloth or the wire winding of Porous, powder sintered, in this hair
In bright, the material or shape to sound attenuation features do not make any restriction.First sound attenuation features 64
Can be fixed by the way of crimping, i.e., the bottom to valve element 6 crimps, and deforms it,
So as to the first sound attenuation features 64 are fixed in the second cavity 62.
When screw mandrel 4 is moved from the top down, valve element 6 is acted on by the difference force of fluid, stop part
65 keep fitting all the time with packing ring 66, of course for frictional force is reduced, can increase therebetween
Plus the less pad of friction system, (pad does not mark reference) as shown in Figure 2.Valve element 6
Bottom contacted with the first valve port 12 after, the first valve port 12 is closed, screw mandrel 4
Continue to move down until that needle 41 is contacted with the second valve port 63, now, two-period form electronics
Expansion valve is generally in closed mode.
When screw mandrel 4 is moved from bottom to top, valve element 6 is acted on by the difference force of fluid, valve element 6
Bottom and the first valve port 12 keep contact condition, screw mandrel 4 continue on move, until stop part
65 contact with packing ring 66；Now, screw mandrel continues to shifting, and band washer 66 is moved together,
Now, valve element 6 follows needle 41 to begin to move up.During standard-sized sheet pulse, two-period form electronics is swollen
Swollen valve reaches full-gear.
In the present embodiment, before the upper surface of packing ring 66 contacts with the lower surface of stop part 65
Regulation section, flow mainly carries out aperture control, shape by between the valve port 63 of needle 41 and second
Section is adjusted into low discharge.Because the second valve port 63 is smaller, therefore under the conditions of same umber of pulse, stream
Amount adjustable range is wider, and degree of regulation is higher；Screw mandrel 4 drives the mobile section moved on stop part 65,
Flow is then mainly controlled by valve element 6 with the aperture of the first valve port 12, i.e. big flow regulation section.
Due to adjusting section in low discharge, between the bottom of valve element 6 and the first valve port 12 all the time
Keep contact, fluid after between needle and the second valve port 63, by the noise reduction of mesh first
Part 64 flows to the first valve port 12, and fluid is acted on by multilayer mesh and fully broken up, so that
The vortex of the similar sound that screams is eliminated, noise is reduced.
Second embodiment：
Fig. 3 is refer to, Fig. 3 is the two-period form electric expansion valve knot of second embodiment of the invention
Structure schematic diagram.
Present embodiment is in the first cavity 61, also to set with the difference of first embodiment
The second sound attenuation features 69 are equipped with, the second sound attenuation features 69 are a part for annular shape, with the
The shape of one cavity 61 is adapted, and can equally be twined using the screen cloth of Porous or wire
It is made around, the mode such as powder sintered, during assembling, can be loaded from the upper end of the first cavity 61.
After so fluid enters the first cavity from opening 611, the second sound attenuation features are first passed through
69, then to the second valve port 63, then by being flowed out after the first sound attenuation features 64, further drop
Low noise.The other structures of present embodiment are identical with first embodiment, not another herein
One repeats.
3rd implementation method：
Fig. 4 is refer to, Fig. 4 is the two-period form electric expansion valve knot of third embodiment of the invention
Structure schematic diagram.
Present embodiment is that the second sound attenuation features 69 are not with the difference of second embodiment
Annular shape loads from the first cavity 61, but and gets through many in the two ends of valve element 6 or circumference
Individual through hole, places columned second sound attenuation features 69 in through hole, so can equally realize
Fluid first passes through the second sound attenuation features 69 and carries out noise reduction, enters back into the second valve port 63, Ran Houjing
Flowed out after crossing the first sound attenuation features 64, further reduce noise.The other structures of present embodiment
Identical with first embodiment, this is no longer going to repeat them.
4th implementation method：
Fig. 5 is refer to, Fig. 5 is the two-period form electric expansion valve knot of four embodiment of the invention
Structure schematic diagram.
In order that two-period form electric expansion valve has dehumidification function, it usually needs valve element 12 is existed
When closing the first valve port 12, however it remains certain flow.In order to realize this purpose, the 3rd
On the basis of implementation method, normal open is additionally provided between the first cavity 61 and the second cavity 62
Device.In the present embodiment, normal open device is normal open hole 631, and such two-period form electronics is swollen
Just some flow is in the middle of circulation all the time between two adapters of swollen valve.Certainly, in order to
Also there is certain flow when turning off the first valve port 12, however it is not limited to open up above-mentioned normal open hole 631,
The replacement of multiple technologies means can also on this basis be made, such as by way of fluting,
Some circulation grooves are processed on the internal perisporium of the first valve port 12, can equally realize that valve body is closed
When still with certain flow purpose.It will be understood by those skilled in the art that these are based on
The use of some replacement means on present inventive concept, it should also belong to protection scope of the present invention
Within.
For ease of description, present embodiment is based on the 3rd implementation method, in fact, should
The structure in normal open hole 631 obviously can be applied in first embodiment, second embodiment completely
It is central.
The above is only the description of the preferred embodiment of invention, it is noted that the present invention says
The orientation word such as upper and lower, left and right in bright book should not be regarded simply to illustrate that understand
Make limitation of the present invention.Due to the finiteness of literal expression, and it is unlimited objectively existing
Concrete structure, for those skilled in the art, is not departing from original of the invention
On the premise of reason, some improvements and modifications can also be made, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (12)
1. two-period form electric expansion valve, including valve seat (1), it is sleeved on the valve seat (1)
Sleeve pipe (2), be arranged on described sleeve pipe (2) internal nut (3) and stop component,
Magnetic rotor component is arranged on described sleeve pipe (2) inside, and drives screw mandrel (4) to rotate, described
Screw mandrel (4) is coordinated with the nut (3) by screw thread pair, it is characterised in that
Also include valve element (6), the valve element is arranged in the valve pocket (11) of the valve seat (1),
The valve element (6) is under the drive of the screw mandrel (4) to being arranged on the valve seat (1)
First valve port (12) is opened or closed, and low discharge is additionally provided with inside the valve element (6)
Governor motion, the low discharge governor motion needle (41) internal by being arranged on the valve element (6)
Constituted with the second valve port (63) being arranged on the valve element (6).
2. two-period form electric expansion valve as claimed in claim 1, it is characterised in that described
Valve element (6) is cylindrical in shape, and its two ends is respectively arranged with the first cavity (61) and the second cavity (62),
Second valve port (63) be opened in first cavity (61) and the second cavity (62) it
Between.
3. two-period form electric expansion valve as claimed in claim 1, it is characterised in that described
Needle (41) is connected with the screw mandrel (4) by packing ring (66) and limiting section (67).
4. two-period form electric expansion valve as claimed in claim 3, it is characterised in that described
The upper end of needle (41) is fixedly connected with the packing ring (66), under the screw mandrel (4)
End is stretched into the inner chamber of the needle (41) through the packing ring (66), the screw mandrel (4)
Bottom be fixedly connected with limiting section (67).
5. two-period form electric expansion valve as claimed in claim 2, it is characterised in that described
Be provided with stop part (65) at the top of first cavity (61), the stop part (65) with it is described
Valve element (6) is fixed by way of welding or riveting.
6. two-period form electric expansion valve as claimed in claim 2, it is characterised in that described
With opening (611), the opening (611) is by first cavity (61) for valve element (6)
It is connected with the valve pocket (11).
7. two-period form electric expansion valve as claimed in claim 6, it is characterised in that described
The first sound attenuation features (64) are provided with second cavity (62) so that from the opening (611)
The fluid of inflow flows from the first valve port (12) again after carrying out noise reduction through the first sound attenuation features (64)
Go out.
8. two-period form electric expansion valve as claimed in claim 7, it is characterised in that described
The second sound attenuation features (69) are additionally provided with first cavity (61).
9. two-period form electric expansion valve as claimed in claim 8, it is characterised in that described
Second sound attenuation features (69) are adapted in annular shape, the shape with first cavity (61).
10. two-period form electric expansion valve as claimed in claim 8, it is characterised in that described
Second sound attenuation features (69) are cylindrical, and what is opened up in the valve element (6) circumference is logical
Kong Zhong.
11. two-period form electric expansion valves as claimed in claim 2, it is characterised in that described
Normal open device is additionally provided between first cavity (61) and second cavity (62).
12. two-period form electric expansion valves as claimed in claim 11, it is characterised in that described
Normal open device is for normal open hole (631) or is arranged on the first valve port (12) internal perisporium
Circulation groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916436.XA CN106870750A (en) | 2015-12-10 | 2015-12-10 | Two-period form electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916436.XA CN106870750A (en) | 2015-12-10 | 2015-12-10 | Two-period form electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106870750A true CN106870750A (en) | 2017-06-20 |
Family
ID=59177150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510916436.XA Pending CN106870750A (en) | 2015-12-10 | 2015-12-10 | Two-period form electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106870750A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461498A (en) * | 2016-06-03 | 2017-12-12 | 浙江盾安禾田金属有限公司 | A kind of electric expansion valve |
| WO2019042140A1 (en) * | 2017-08-30 | 2019-03-07 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and refrigerating system provided with same |
| CN110107695A (en) * | 2018-02-01 | 2019-08-09 | 株式会社鹭宫制作所 | Motor-driven valve and refrigerating circulation system |
| WO2019154342A1 (en) * | 2018-02-11 | 2019-08-15 | 浙江盾安机械有限公司 | Electronic expansion valve |
| WO2019179517A1 (en) * | 2018-03-23 | 2019-09-26 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN111059295A (en) * | 2018-10-17 | 2020-04-24 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN115435516A (en) * | 2021-06-03 | 2022-12-06 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| JP7365300B2 (en) | 2020-07-22 | 2023-10-19 | 株式会社鷺宮製作所 | Electric valve and refrigeration cycle system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461498A (en) * | 2016-06-03 | 2017-12-12 | 浙江盾安禾田金属有限公司 | A kind of electric expansion valve |
| WO2019042140A1 (en) * | 2017-08-30 | 2019-03-07 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and refrigerating system provided with same |
| JP2020531769A (en) * | 2017-08-30 | 2020-11-05 | 浙江三花智能控制股▲ふん▼有限公司 | Electronic expansion valve and freezing system equipped with it |
| CN110107695A (en) * | 2018-02-01 | 2019-08-09 | 株式会社鹭宫制作所 | Motor-driven valve and refrigerating circulation system |
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| JP2021513040A (en) * | 2018-02-11 | 2021-05-20 | 浙江盾安人工環境股▲ふん▼有限公司Ｚｈｅｊｉａｎｇ ＤｕｎＡｎ Ａｒｔｉｆｉｃｉａｌ Ｅｎｖｉｒｏｎｍｅｎｔ Ｃｏ．， Ｌｔｄ | Electronic expansion valve |
| JP7058744B2 (en) | 2018-02-11 | 2022-04-22 | 浙江盾安人工環境股▲ふん▼有限公司 | Electronic expansion valve |
| WO2019179517A1 (en) * | 2018-03-23 | 2019-09-26 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN110296264A (en) * | 2018-03-23 | 2019-10-01 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| CN111059295A (en) * | 2018-10-17 | 2020-04-24 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| JP7365300B2 (en) | 2020-07-22 | 2023-10-19 | 株式会社鷺宮製作所 | Electric valve and refrigeration cycle system |
| CN115435516A (en) * | 2021-06-03 | 2022-12-06 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
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Application publication date: 20170620 |
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