CN107461498A - A kind of electric expansion valve - Google Patents
A kind of electric expansion valve Download PDFInfo
- Publication number
- CN107461498A CN107461498A CN201610392187.3A CN201610392187A CN107461498A CN 107461498 A CN107461498 A CN 107461498A CN 201610392187 A CN201610392187 A CN 201610392187A CN 107461498 A CN107461498 A CN 107461498A
- Authority
- CN
- China
- Prior art keywords
- valve
- electric expansion
- needle component
- seat core
- expansion valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
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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
-
- 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
- F16K1/52—Means for additional adjustment of the rate of flow
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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
Abstract
The invention discloses a kind of electric expansion valve, belong to solenoid valve market, solves the problems, such as the flow curve that existing electric expansion valve can not obtain in the application of certain special system, the electronic expansion of the present invention includes valve body, needle component and the drive device for driving the needle component movement, the electric expansion valve controls the drive device according to the pulse signal received, the electric expansion valve also includes the valve seat core being arranged on the needle component, the valve seat core is provided with small valve port, the valve body is provided with big valve port, the drive device drives the needle component movement to control the small valve port opening, the drive device drives the valve seat core motion to control the big valve port opening by the needle component.Special flow curve controlled is effectively so realized, so as to realize the application of special system.
Description
【Technical field】
The present invention relates to electric expansion valve, the electric expansion valve especially applied in air conditioner, refrigerator, heat pump etc..
【Background technology】
Electric expansion valve is an important component in refrigeration system, mainly plays a part of reducing pressure by regulating flow and regulation flow.Existing electric expansion valve includes valve body, nut and the needle component coordinated with nut by screw thread, and axial movement is produced while rotation using drive device valve needle component, adjusts valve port opening, realizes flow quantity control.
The discharge characteristic of electric expansion valve is typically described with flow curve, because prior art mostly uses cone-shaped valve head easy to process, therefore the flow curve of electric expansion valve is conic section, i.e. downwardly open parabolical left branch part, and the cone-shaped valve head for designing different cone angle can realize different types of flow curve characteristic.
To realize that big flow is adjusted, some existing schemes propose multisection type needle, two conical sections are designed in valve pin head portion, the cone angle of the two conical sections is from bottom to top sequentially reduced, and can be seen that by Fig. 1 curves, flow increases sharply after umber of pulse reaches P3, umber of pulse reaches P2, and flow now be Q1, and the changes in flow rate between P3-P2 is much larger than the changes in flow rate before P3, it is possible thereby to improve the degree of regulation of electric expansion valve, increase throttle opening and adjustable range.Specific scheme is referred to Authorization Notice No. as " CN203163367U ", the utility model patent of entitled " electric expansion valve and have its refrigerating plant ".
But in reality system application, the not only flow curve of above two type, it is necessary to flow curve type as shown in Figure 2 in the application of certain special system.Flow needs rapid increase i.e. after P3 pulses, and needs to meet when reaching Q1 flow values：Q1 ＞ 2Q3, to realize that the needle angle that this flow curve only changes can not obtain.
【The content of the invention】
The technical problems to be solved by the invention are overcome the deficiencies in the prior art and provide a kind of electric expansion valve, can obtain the flow curve that existing change needle angle can not obtain, and realize accurate be oriented to.
Solves above-mentioned technical problem, the present invention adopts the following technical scheme that：
A kind of electric expansion valve, including valve body, needle component and drive device for driving the needle component movement, the electric expansion valve controls the drive device according to the pulse signal received, the electric expansion valve also includes the valve seat core being arranged on the needle component, the valve seat core is provided with small valve port, the valve body is provided with big valve port, the drive device drives the needle component movement to control the small valve port opening, and the drive device drives the valve seat core motion to control the big valve port opening by the needle component.
Further scheme, the needle component form slide-and-guide with the nut seat and coordinated, and the nut seat is oriented in the needle component movement.
Further scheme, the needle component include needle, screw rod and the sleeve being connected between the needle and the screw rod, and on the sleeve, the screw rod is connected the valve seat core slip cap with the nut seat screw thread.
Further scheme, the needle component also include buffer spring, and the buffer spring is located in the sleeve and supported between the needle and the screw rod.
Further scheme, the electric expansion valve also include guide sleeve, and the guide sleeve forms slide-and-guide with the valve seat core and coordinated, and the guide sleeve is oriented to when the valve seat core moves.
Further scheme, the nut seat bottom are provided with cavity, and the guide sleeve stretches into the cavity and the cavity interior walls that recline.
Further scheme, the valve body include valve body body and the valve port seat being fixedly installed on the valve body body, and the big valve port is located on the valve port seat, and the guide sleeve is connected on the valve port seat or is integrally formed with the valve port seat.
Further scheme, the valve seat core are provided with the first communication port, and corresponding first communication port is provided with the second communication port on the guide sleeve.
Further scheme, the valve seat core top are provided with flange, and during the electric expansion valve valve opening, the needle component is acted on the flange, to drive the valve seat core to move.
Further scheme, the valve seat core top are fixedly connected with pressing plate, and the pressing plate extends to form the flange to the valve seat core center position；Or the valve seat core top is inwardly collapsed and forms the flange.
Beneficial effects of the present invention：
The electric expansion valve of the present invention, include the drive device of valve body, needle component and valve needle component movement, electric expansion valve controls drive device according to the pulse signal received, valve seat core is set up on this basis, valve seat core is arranged on needle component, and valve seat core is provided with small valve port, and valve body is provided with big valve port, for drive device valve needle component movement to control small valve port opening, drive device drives the motion of valve seat core to control big valve port opening by needle component.During specific works, in the starting stage, electric expansion valve controls drive device according to the pulse signal received, and drive device valve needle component movement is gradually opened small valve port, because small valve port bore is smaller, can only realize the control of low discharge；Continue to move with needle component, the motion of valve seat core is driven to be gradually opened big valve port, because big valve port bore is larger, flow can increase sharply, the control of big flow can be realized, the two-period form working method opened successively by this small valve port, big valve port, obtain the existing flow curve that changes needle angle and can not obtain.Coordinate in addition, the valve seat core and needle component of the present invention form slide-and-guide, needle component is oriented to when valve seat core moves, and can so improve valve seat core guiding accuracy, and then improve flow of electronic expansion valve control accuracy.
The needle component forms slide-and-guide with the nut seat and coordinated, and the nut seat is oriented in the needle component movement.It can effectively prevent the active force of the small valve port of needle impact excessive and cause to damage, the problem of can also preventing needle from stress deflection occurs when entering small valve port and cause needle stuck.
The needle component also includes buffer spring, and the buffer spring is located in the sleeve and supported between the needle and the screw rod.Impact of the fluid to needle is mitigated by the deformation of buffer spring, reduces noise.
The electric expansion valve also includes guide sleeve, and the guide sleeve forms slide-and-guide with the valve seat core and coordinated, and the guide sleeve is oriented to when the valve seat core moves.Guide sleeve coordinates needle component, realizes the inside and outside guiding during motion of valve seat core, further lifts guiding accuracy.
The nut seat bottom is provided with cavity, and the guide sleeve stretches into the cavity and the cavity interior walls that recline.Improve the axiality of nut seat and guide sleeve.
The valve body includes valve body body and the valve port seat being fixedly installed on the valve body body, and the big valve port is located on the valve port seat, and the guide sleeve is connected on the valve port seat or is integrally formed with the valve port seat.Big valve port is set on valve port seat, convenient processing, is directed to be set on the axiality that can ensure guide sleeve and big valve port on valve port seat.
The present invention these features and advantage will be detailed in following embodiment, accompanying drawing exposure.
【Brief description of the drawings】
The present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is the flow curve figure that existing electric expansion valve obtains；
The flow curve figure that Fig. 2 is obtained by electric expansion valve of the present invention；
Fig. 3 is the structural representation of electric expansion valve in the embodiment of the present invention one；
Fig. 4 is partial enlarged drawing at Fig. 3 A；
Fig. 5 is the partial structural diagram of electric expansion valve in the embodiment of the present invention two；
Fig. 6 is the partial structural diagram of electric expansion valve in the embodiment of the present invention three.
【Embodiment】
The technical scheme of the embodiment of the present invention is explained and illustrated with reference to the accompanying drawing of the embodiment of the present invention, but following embodiments are only the preferred embodiments of the present invention, and it is not all.Based on the embodiment in embodiment, those skilled in the art obtain other embodiment on the premise of creative work is not made, and belong to protection scope of the present invention.
Reference picture 3,4, the electric expansion valve that the embodiment of the present invention one proposes include valve body, needle component, the nut seat 2 for coordinating needle component and the drive device for valve needle component movement, specifically：Drive device includes magnet rotor 3 and magnet coil (not shown), magnet rotor 3 is fixedly connected on needle component, screw thread matching relationship is formed between needle component and nut seat 2, after magnet coil applies pulse signal magnet rotor 3 can be driven to rotate, magnet rotor 3 makes needle component produce up and down motion while driving the rotation of needle component, realizes Flow-rate adjustment/opening and closing of electric expansion valve.The electric expansion valve of the present embodiment has also added valve seat core 5, the valve seat core 5 and needle component form slide-and-guide and coordinated, needle component is oriented to when valve seat core 5 moves, valve seat core 5 is provided with small valve port 51, valve body is provided with big valve port 121, for drive device valve needle component movement to control the small aperture of valve port 51, drive device drives valve seat core 5 to move to control the big aperture of valve port 121 by needle component.With reference to Fig. 2, when electric expansion valve works, in the starting stage, electric expansion valve controls drive device according to the pulse signal received, drive device valve needle component movement is gradually opened small valve port 51, because the small bore of valve port 51 is smaller, can only realize the control of low discharge；Continue to move with needle component, the motion of valve seat core 5 is driven to be gradually opened big valve port 121, because the big bore of valve port 121 is larger, flow can increase sharply, the control of big flow can be realized, the two-period form working method opened successively by this small valve port 51, big valve port 121, the existing flow curve that changes needle angle and can not obtain is obtained, i.e., is met when reaching Q1 flow values：Q1 ＞ 2Q3.The valve seat core 5 and needle component of the present embodiment form slide-and-guide and coordinated, and needle component is oriented to when valve seat core 5 moves, and can so improve the guiding accuracy of valve seat core 5, and then improve the control accuracy of flow of electronic expansion valve.Preferably：The present embodiment valve body includes valve body body 11 and the valve port seat 12 being fixedly installed on valve body body 11, and above-mentioned big valve port 121 is located on valve port seat 12, convenient processing.In other less preferred embodiments, big valve port can also be set directly on valve body body.
When it is implemented, the needle component of the present embodiment includes needle 42, screw rod 41 and the sleeve 44 being connected between needle 42 and screw rod 41, the bottom of screw rod 41 is fixedly connected with the top of sleeve 44, and needle 42 is movably arranged on the bottom of sleeve 44, preferably：Needle component also includes a buffer spring 43, and the buffer spring 43 is located in sleeve 44 and supported between needle 42 and screw rod 41, when electric expansion valve works, mitigates impact of the fluid to needle 42 by the deformation of buffer spring 43, reduces noise.
The nut seat 2 of the present embodiment is provided with screwed hole 22 and the cavity 21 communicated with screwed hole 22, above-mentioned screw rod 41 coordinates with screwed hole 22, sleeve 44 is extended partially into cavity 21 and is slidably matched with the wall of cavity 21, coordinate so that needle component forms slide-and-guide with nut seat 2, nut seat 2 is oriented to when needle component moves up and down, so can effectively prevent needle 42 impact small valve port 51 active force it is excessive and cause to damage, the problem of can also preventing needle 42 from stress deflection occurs when entering small valve port 51 and cause needle 42 stuck.
Coordinate to realize the assembling of valve seat core 5 and needle component and forming slide-and-guide, the slip cap of valve seat core 5 is mounted on the sleeve 44 of needle component by the present embodiment, specifically：Valve seat core 5 is provided with inner chamber 50, the wall of inner chamber 50 forms slide-and-guide with the outer wall of sleeve 44 and coordinated, and because small valve port 51 is located on valve seat core 5, the motion of valve seat core 5 is oriented to using the sleeve 44 of needle component, its guiding accuracy is higher, and then the accurate control of flow.
To realize that needle component opens the linkage with valve seat core 5 after small valve port 51, the present embodiment is provided with flange on the top of valve seat core 5, and during electric expansion valve valve opening, needle component is acted on flange, to drive valve seat core 5 to move, so that big valve port 121 be opened.Preferably：The top of valve seat core 5 of the present embodiment is fixedly connected with pressing plate 6, the pressing plate 6 extends to form flange to the center position of valve seat core 5, the outer wall of sleeve 44 of needle component is provided with step 441, during needle component moves the small valve port 51 of opening upwards, when step 441 arrives to flange, needle component opens big valve port 121 with regard to valve seat core 5 can be driven to move upwardly together.When closing valve, valve seat core 5 can be resetted under Gravitative Loads, and big valve port 121 is closed.In other embodiments, it can also be that valve seat core top is inwardly collapsed and form flange.
It is appreciated that needle modular construction of the present invention is not limited to described in above-described embodiment, other existing known needle components can also be used.
Embodiment two
Reference picture 5, the electric expansion valve of the present embodiment is roughly the same with embodiment one, and difference is, the electric expansion valve of the present embodiment also includes a guide sleeve 7, the guide sleeve 7 forms slide-and-guide with valve seat core 5 and coordinated, and guide sleeve 7 is oriented to when valve seat core 5 moves.Specifically, the guide sleeve 7 of the present embodiment is upwardly extended by the top of valve port seat 12 and formed, i.e., guide sleeve 7 is integrally formed with valve port seat 12, can simplify manufacturing procedure, reduces processing cost；The inwall of guide sleeve 7 forms slide-and-guide with the outer wall of valve seat core 5 and coordinated, and the basis being oriented to when needle component moves to valve seat core 5, realizes inside and outside guiding when valve seat core 5 moves, further lifts guiding accuracy, ensures the axiality of valve seat core 5 and valve port seat 12.
The first communication port 52 is provided with valve seat core 5, corresponding first communication port 52 is provided with the second communication port 71 on guide sleeve 7, in the starting stage, drive device valve needle component movement is gradually opened small valve port 51, now valve seat core 5 contacts formation sealing with big valve port 121, refrigerant passes sequentially through the second communication port 71, the first communication port 52 enters valve seat core 5, then flowed out by the small valve port 51 of valve seat core 5；Continue to move with needle component, drive the motion of valve seat core 5 to be gradually opened big valve port 121, now refrigerant directly can be flowed out by big valve port 121.
In other embodiments, guide sleeve can also be used as a single part, in post-production to valve port seat or valve body body.
Embodiment three
Reference picture 6, the electric expansion valve of the present embodiment is roughly the same with embodiment two, and difference is, the top of guide sleeve 7 is stretched into the cavity 21 of nut seat 2 and the inwall of cavity 21 that reclines.Because nut seat 2 is oriented in needle component movement, and needle component coordinates guide sleeve 7 to realize inside and outside guiding when valve seat core 5 moves, it is directed to cover 7 tops to stretch into the cavity 21 of nut seat 2 and the inwall of cavity 21 setting that reclines, the axiality of nut seat 2 and guide sleeve 7 can be improved, guiding accuracy when needle and valve seat core 5 move up and down is further ensured that, realizes the accurate control of flow.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, and is familiar with the those skilled in the art and should be understood that the present invention includes but is not limited to accompanying drawing and the above content described in embodiment.The modification of any function and structure principle without departing from the present invention is intended to be included in the scope of claims.
Claims (10)
1. a kind of electric expansion valve, including valve body, needle component, the nut seat for coordinating the needle component and
For driving the drive device of the needle component movement, it is characterised in that the electric expansion valve also includes
Valve seat core, the valve seat core and the needle component form slide-and-guide and coordinated, and the needle component is described
Valve seat core is oriented to when moving, and the valve seat core is provided with small valve port, and the valve body is provided with big valve port,
The drive device drives the needle component movement, and to control the small valve port opening, the drive device is led to
Crossing the needle component drives the valve seat core motion to control the big valve port opening.
2. electric expansion valve as claimed in claim 1, it is characterised in that the needle component and the spiral shell
Female seat forms slide-and-guide and coordinated, and the nut seat is oriented in the needle component movement.
3. electric expansion valve as claimed in claim 1, it is characterised in that the needle component include needle,
Screw rod and the sleeve being connected between the needle and the screw rod, the valve seat core slip cap are mounted in the set
On cylinder, the screw rod is connected with the nut seat screw thread.
4. electric expansion valve as claimed in claim 3, it is characterised in that the needle component also includes slow
Spring is rushed, the buffer spring is located in the sleeve and supported between the needle and the screw rod.
5. electric expansion valve as claimed in claim 1, it is characterised in that the electric expansion valve also includes
Guide sleeve, the guide sleeve form slide-and-guide with the valve seat core and coordinated, and the guide sleeve is in the valve seat
Core is oriented to when moving.
6. electric expansion valve as claimed in claim 5, it is characterised in that the nut seat bottom is provided with recessed
Chamber, the guide sleeve stretches into the cavity and the cavity interior walls that recline.
7. electric expansion valve as claimed in claim 5, it is characterised in that the valve body includes valve body body
With the valve port seat being fixedly installed on the valve body body, the big valve port is located on the valve port seat, described
Guide sleeve is connected on the valve port seat or is integrally formed with the valve port seat.
8. electric expansion valve as claimed in claim 5, it is characterised in that the valve seat core is provided with first
Communication port, corresponding first communication port is provided with the second communication port on the guide sleeve.
9. electric expansion valve as claimed in claim 1, it is characterised in that the valve seat core top is provided with convex
Edge, during the electric expansion valve valve opening, the needle component is acted on the flange, to drive the valve
Seat core motion.
10. electric expansion valve as claimed in claim 9, it is characterised in that the valve seat core top, which is fixed, to be connected
Pressing plate is connected to, the pressing plate extends to form the flange to the valve seat core center position；Or the valve seat
Inwardly collapse and form the flange in core top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610392187.3A CN107461498A (en) | 2016-06-03 | 2016-06-03 | A kind of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610392187.3A CN107461498A (en) | 2016-06-03 | 2016-06-03 | A kind of electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107461498A true CN107461498A (en) | 2017-12-12 |
Family
ID=60544921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610392187.3A Pending CN107461498A (en) | 2016-06-03 | 2016-06-03 | A kind of electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107461498A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020181922A1 (en) * | 2019-03-13 | 2020-09-17 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and refrigeration system |
| WO2021103753A1 (en) * | 2019-11-27 | 2021-06-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| CN113833867A (en) * | 2021-09-29 | 2021-12-24 | 浙江佳明新能源装备有限公司 | Large-diameter electronic expansion valve |
| WO2022078219A1 (en) * | 2020-10-12 | 2022-04-21 | 浙江盾安人工环境股份有限公司 | Flow regulating valve |
| WO2023143203A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| US11959561B2 (en) | 2019-03-13 | 2024-04-16 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic expansion valve and refrigeration system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0714004A3 (en) * | 1994-11-24 | 1997-02-26 | Sanyo Electric Co | Refrigerant flow amount control valve and refrigerating apparatus therewith |
| JP2007024186A (en) * | 2005-07-15 | 2007-02-01 | Saginomiya Seisakusho Inc | Two-stage control valve |
| JP2012117584A (en) * | 2010-11-30 | 2012-06-21 | Saginomiya Seisakusho Inc | Electric flow control valve |
| CN103388694A (en) * | 2012-05-11 | 2013-11-13 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN103423460A (en) * | 2012-05-18 | 2013-12-04 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN106870750A (en) * | 2015-12-10 | 2017-06-20 | 浙江三花智能控制股份有限公司 | Two-period form electric expansion valve |
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2016
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0714004A3 (en) * | 1994-11-24 | 1997-02-26 | Sanyo Electric Co | Refrigerant flow amount control valve and refrigerating apparatus therewith |
| JP2007024186A (en) * | 2005-07-15 | 2007-02-01 | Saginomiya Seisakusho Inc | Two-stage control valve |
| JP2012117584A (en) * | 2010-11-30 | 2012-06-21 | Saginomiya Seisakusho Inc | Electric flow control valve |
| CN103388694A (en) * | 2012-05-11 | 2013-11-13 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN103423460A (en) * | 2012-05-18 | 2013-12-04 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN106870750A (en) * | 2015-12-10 | 2017-06-20 | 浙江三花智能控制股份有限公司 | Two-period form electric expansion valve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020181922A1 (en) * | 2019-03-13 | 2020-09-17 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and refrigeration system |
| US11959561B2 (en) | 2019-03-13 | 2024-04-16 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic expansion valve and refrigeration system |
| WO2021103753A1 (en) * | 2019-11-27 | 2021-06-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| JP7355937B2 (en) | 2019-11-27 | 2023-10-03 | 浙江盾安人工環境股▲ふん▼有限公司 | electronic expansion valve |
| WO2022078219A1 (en) * | 2020-10-12 | 2022-04-21 | 浙江盾安人工环境股份有限公司 | Flow regulating valve |
| CN113833867A (en) * | 2021-09-29 | 2021-12-24 | 浙江佳明新能源装备有限公司 | Large-diameter electronic expansion valve |
| WO2023143203A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
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Application publication date: 20171212 |
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| RJ01 | Rejection of invention patent application after publication |