CN105626876A - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN105626876A CN105626876A CN201410588655.5A CN201410588655A CN105626876A CN 105626876 A CN105626876 A CN 105626876A CN 201410588655 A CN201410588655 A CN 201410588655A CN 105626876 A CN105626876 A CN 105626876A
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- needle
- screw rod
- sleeve
- groove
- draw
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- 238000010276 construction Methods 0.000 claims description 29
- 238000009434 installation Methods 0.000 abstract description 9
- 210000001503 joint Anatomy 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000005520 electrodynamics Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- Electrically Driven Valve-Operating Means (AREA)
- Lift Valve (AREA)
Abstract
The invention provides an electronic expansion valve. The electronic expansion valve comprises a first valve seat, a second valve seat, a return spring, a transverse connecting pipe, a vertical connecting pipe, a valve needle, a nut and a screw rod, wherein the screw rod is movably connected in the nut in the axial direction of the nut in a threaded mode; the valve needle can move in the axial direction relative to the screw rod; the first end of the screw rod is movably connected in the valve needle in a sleeved mode and drives the valve needle to reciprocate in the axial direction; a supporting structure is arranged on the periphery, located outside the valve needle, of the screw rod; the screw rod is sleeved with the return spring, the first end of the return spring is in butt joint with the supporting structure, and the second end of the return spring is in butt joint with the end surface of the first end of the valve needle. By means of the electronic expansion valve, the problems that in the prior art, a spring installation hole is inconvenient to machine, is high in cost and affects the structural strength of a spring installation position are solved.
Description
Technical field
The present invention relates to electric expansion valve, be particularly applied to the electric expansion valve in the refrigeration system such as air conditioner, refrigerator.
Background technology
At air-conditioning market, owing to its indoor set and off-premises station are distant, therefore generally can adopt two electric expansion valves, and the two electric expansion valve must distinguish check valve in parallel, so could improve the work efficiency of air conditioning system to greatest extent.
The electric expansion valve of prior art, the nut of nut assembly is fixed in pilot sleeve, and pilot sleeve is fixed on valve seat, and needle is fixed in the valve port of valve seat, and screw rod is screwed onto on nut, is provided with spring between screw rod and needle.
A kind of electrodynamic valve disclosed in the Chinese invention patent application that application number is 201010515234.1, this electrodynamic valve offers endoporus on needle, screw rod is connected in this endoporus, spring is also disposed in the endoporus of needle, owing to needing to leave the installing space of spring, it is therefore desirable to beat deep hole shock mount inside needle, not only process inconvenience, relatively costly, and it is easily reduced the structural strength of needle.
A kind of electric expansion valve disclosed in the Chinese invention patent application that application number is 200410093130.0, another spring set-up mode disclosed in this electric expansion valve, in this application, leading screw has an axially hollow portion, the upper end of valve rod is limited in this hollow bulb, and is supported by competing spring and steel ball. Owing to needing to stay enough spaces to install spring, it is therefore desirable to beat deep hole shock mount inside leading screw, not only process inconvenience, relatively costly, and it is easily reduced the structural strength of leading screw.
Summary of the invention
It is an object of the invention to provide a kind of electric expansion valve, it is possible to overcome spring mounting hole processing inconvenience in prior art, relatively costly, and the problem affecting the structural strength of spring attachment positions.
For solving above-mentioned technical problem, as one aspect of the present invention, provide a kind of electric expansion valve, including the first valve seat, second valve seat, return spring, horizontal adapter, vertical joint pipe, needle, nut and screw rod, screw rod is axially movable screwed onto in nut along nut, needle is axially movable relative to screw rod, first end of screw rod is actively socketed in needle, and drive needle axially reciprocating, screw rod is positioned on the periphery outside needle and is provided with supporting construction, return spring is set in outside screw rod, first end of return spring abuts on the support structure, second end of return spring is connected on the first end end face of needle.
Further, needle offers draw-in groove, the sidewall of draw-in groove is provided for screw rod and puts into the construction opening of draw-in groove, and the first end end of screw rod is provided with the stop part being fastened in draw-in groove by screw rod.
Further, needle offers draw-in groove, and draw-in groove is provided with towards the side opening part of screw rod and fixes the back-up ring being connected with draw-in groove, and the first end end of screw rod is positioned at draw-in groove backstop on back-up ring, and the second end of return spring is connected on back-up ring.
Further, the first end end face of needle being provided with pad, the second end of return spring is connected on pad.
Further, the second valve seat including the axially extended sleeve along needle, needle is slidably arranged in sleeve, cage guiding needle.
Further, the second valve seat is arranged with sleeve split, and sleeve is fixedly installed on the end of the second valve seat, and needle is slidably arranged in sleeve, cage guiding needle.
Further, needle includes big footpath section and path section, and big footpath section is blocked in outside the second valve seat, and nut includes towards the second axially extended auxiliary sleeve of valve seat, the big footpath section of needle is slidably arranged in auxiliary sleeve and by auxiliary cage guiding, and draw-in groove is arranged on the big footpath section of needle.
Further, the sidewall of sleeve is radially arranged the center-aisle connected with the primary valve on the second valve seat.
Further, screw rod includes the path section that the big footpath section with nut screw connection coordinates and the central diameter section being connected between big footpath section and path section with needle, stop part is arranged on the end, one end away from central diameter section of path section, supporting construction is arranged on the position being connected with big footpath section of central diameter section, and pad is set in central diameter section.
Further, supporting construction and screw rod be one-body molded or supporting construction fixed cover is located at outside screw rod.
The present invention needle be axially movable relative to screw rod, first end of screw rod is actively socketed in needle, and drive needle axially reciprocating, screw rod is positioned on the periphery outside needle and is provided with supporting construction, return spring is set in outside screw rod, first end of return spring abuts on the support structure, second end of return spring is connected on the first end end face of needle, so that return spring is positioned on the screw rod outside needle, and it is set in outside screw rod, without offering deeper spring installation cavity on needle or screw rod, reduce the difficulty of processing of needle and screw rod, reduce processing cost, and ensure that the structural strength of needle and screw rod.
Accompanying drawing explanation
Fig. 1 diagrammatically illustrates the sectional structure chart of the electric expansion valve according to the first embodiment of the present invention;
Fig. 2 diagrammatically illustrates the sectional structure chart of electric expansion valve according to the second embodiment of the present invention;
Fig. 3 diagrammatically illustrates the sectional structure chart of electric expansion valve according to the third embodiment of the invention;
Fig. 4 diagrammatically illustrates the sectional structure chart of electric expansion valve according to the fourth embodiment of the invention;
Fig. 5 diagrammatically illustrates the sectional structure chart that the second valve seat of electric expansion valve according to the fifth embodiment of the invention coordinates with needle.
Accompanying drawing labelling in figure: 10, the first valve seat; 20, the second valve seat; 30, return spring; 40, horizontal adapter; 50, vertical joint pipe; 60, needle; 70, nut; 80, screw rod; 21, primary valve; 22, center-aisle; 23, pilot hole; 24, sleeve; 61, draw-in groove; 62, construction opening; 63, pad; 64, back-up ring; 71, auxiliary sleeve; 81, supporting construction; 82, stop part.
Detailed description of the invention
Hereinafter embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Refer to Fig. 1 to 5, according to embodiments of the invention, electric expansion valve includes first valve seat the 10, second valve seat 20, return spring 30, horizontal adapter 40, vertical joint pipe 50, needle 60, nut 70 and screw rod 80. First valve seat 10 has inner chamber, and miscellaneous part is arranged in the first valve seat 10.
Second valve seat 20 is fixedly installed on the first end end of the first valve seat 10, and the middle part of the second valve seat 20 is provided with center-aisle 22, and the first end of the second valve seat 20 is provided with the primary valve 21 being communicated to center-aisle 22. Preferably, the circumference of the second valve seat 20 is evenly arranged with multiple center-aisle 22.
Horizontal adapter 40 is communicated to the inner chamber of the first valve seat 10. Vertical joint pipe 50 is fixedly connected on the exit position of primary valve 21, and when primary valve 21 is opened, primary valve 21 connects the inner chamber of vertical joint pipe 50 and the first valve seat 10 by center-aisle 22 so that vertical joint pipe 50 can be connected with horizontal adapter 40.
Screw rod 80 is axially movable screwed onto in nut 70 along nut 70, and needle 60 is axially movable relative to screw rod 80, and the first end pivot bush unit of screw rod 80 is also limited in needle 60, such that it is able to drive needle 60 axially reciprocating. Screw rod 80 is positioned on the periphery outside needle 60 and is provided with supporting construction 81, and return spring 30 is set in outside screw rod 80, and the first end of return spring 30 is connected in supporting construction 81, and the second end of return spring 30 is connected on the first end end face of needle 60.
Owing to return spring 30 is set in outside screw rod 80, first end of return spring 30 is connected in supporting construction 81, second end of return spring 30 is connected on the first end end face of needle 60, so that return spring 30 is positioned on the screw rod 80 outside needle 60, and it is set in outside screw rod 80, it is not necessary on needle 60 or screw rod 80, offer deeper spring installation cavity, reduce needle 60 and the difficulty of processing of screw rod 80, reduce processing cost, and ensure that needle 60 and the structural strength of screw rod 80. When electric expansion valve works; screw rod 80 valve needle 60 is close to primary valve 21; after needle 60 blocks primary valve 21; screw rod 80 may proceed to move to needle 60 under effect of inertia, due to the existence of return spring 30, it is possible to the motion of screw rod 80 is formed buffering; screw rod 80 is made to continue motion; and needle 60 is maintained at primary valve 21 place, it is possible to avoid screw rod 80 that needle 60 is impacted and cause that needle damage or screw rod 80 hit curved, the effectively fit structure of protection needle 60 and screw rod 80. Screw rod 80 away from the second valve seat 20 to open primary valve 21 time, motion along with screw rod 80, needle 60 under the backstop action of the elastic reaction of return spring 30 and the first end of screw rod 80 all the time can with screw rod 80 together axially-movable so that needle 60 can quickly open primary valve 21.
Can be formed in one between supporting construction 81 and screw rod 80, it is also possible to split is arranged, and after machining respectively, supporting construction 81 is arranged on screw rod 80. Specifically, supporting construction 81 can be the stop lug directly formed on the periphery wall of screw rod 80, can also be have female baffle ring structure, screw rod 80 has and the external screw thread of baffle ring respective outer side edges, baffle ring structure is fixedly installed on screw rod 80 by thread matching structure, forms the supporting construction 81. of return spring 30
In conjunction with shown in Figure 1, according to the first embodiment of the present invention, needle 60 offers draw-in groove 61, the sidewall of draw-in groove 61 is provided for screw rod 80 and puts into the construction opening 62 of draw-in groove 61, and the first end end of screw rod 80 is provided with the stop part 82 being fastened in draw-in groove 61 by screw rod 80. The open-ended size of draw-in groove 61 is less than the size of stop part 82, so that after the first end end making screw rod 80 is arranged in draw-in groove 61, can pass through draw-in groove 61 open-ended by stop part 82 in axial direction backstop in draw-in groove 61 so that needle 60 together axially-movable can be driven when screw rod 80 moves. The sidewall of draw-in groove 61 arranges construction opening 62, is able to be loaded in draw-in groove 61 from the side, position of construction opening 62 by the first end of screw rod 80 easily. After installation between screw rod 80 and needle 60, it is possible to needle 60 is formed radially spacing by the second valve seat 20 grade, it is prevented that needle 60 is deviate from from screw rod 80 by construction opening 62.
The stop part 82 of the first end end of screw rod 80 can be structure as a whole with the body of rod of screw rod 80, it is also possible to fixed Combination after processing respectively with screw rod 80, and compound mode can for being spirally connected or clamping etc.
Preferably, the first end end face of needle 60 being provided with pad 63, the second end of return spring 30 is connected on pad 63. There is open top and lateral construction opening 62 due to the draw-in groove 61 of needle 60, in order to avoid these openings affect the installation placement of return spring 30, it is necessary to the first end end face of needle 60 is processed. And after on the first end end face of needle 60, pad 63 is set, pad 63 forms face with the first end end face of needle 60 and contacts, the first incomplete defect of end end face of needle 60 can be overcome, make pad 63 substitute the first end end face of needle 60 to be formed with return spring 30 matching relationship is installed, it is to avoid the adverse effect that the installation of return spring 30 is caused by the opening on needle 60.
In the present embodiment, the second valve seat 20 including the axially extended sleeve 24 along needle 60, needle 60 is slidably arranged in sleeve 24, and sleeve 24 leads needle 60. Needle 60 includes big footpath section and path section, and needle 60 is arranged in sleeve 24 all over, and the big footpath section of needle 60 and the sleeve 24 of the second valve seat 20 are slidably matched. Draw-in groove 61 is arranged on the big footpath section of needle 60, to ensure that needle 60 remains in that enough structural strengths after offering draw-in groove 61. Needle 60 can be led by the existence of sleeve 24 better, it is ensured that the axiality between needle 60 and the second valve seat 20.
Path section that the big footpath section that screw rod 80 includes coordinating with nut 70 coordinates with needle 60 and the central diameter section being connected between big footpath section and path section, stop part 82 is arranged on the end, one end away from central diameter section of path section, and supporting construction 81 is arranged on the position being connected with big footpath section of central diameter section. Owing to the structure of screw rod 80 is gradually increased from the one end near needle 60 to one end diameter away from needle 60 substantially, therefore return spring 30 can be installed from the path section of screw rod 80, installs more convenient. Additionally, due to three-stage structure is integrally machined, it is ensured that the axiality of three-stage structure, it is ensured that machining accuracy.
In conjunction with shown in Figure 2, according to the second embodiment of the present invention, it is essentially identical with first embodiment, is different in that, in the present embodiment, sleeve 24 is independent of the second valve seat 20 individualism. In the present embodiment, sleeve 24 fixed cover is located at the first end end of the second valve seat 20, and needle 60 is slidably arranged in sleeve 24, and sleeve 24 leads needle 60. Sleeve 24 and the second valve seat 20 are Split type structure, it is possible to reduce difficulty of processing, reduce processing cost.
In conjunction with shown in Figure 3, according to the third embodiment of the invention, needle 60 includes big footpath section and path section, big footpath section is blocked in outside the second valve seat 20, nut 70 includes towards the second axially extended auxiliary sleeve 71 of valve seat 20, the big footpath section of needle 60 is slidably arranged in auxiliary sleeve 71 and is led by auxiliary sleeve 71, and draw-in groove 61 is arranged on the big footpath section of needle 60.
In the present embodiment, second valve seat 20 includes the axially extended sleeve 24 along needle 60, needle 60 is arranged in sleeve 24, but guide effect is not played in the motion of needle 60 by sleeve 24, the axially-movable of needle 60 is led mainly through the auxiliary sleeve 71 being set in the big footpath section of needle 60. The sidewall of sleeve 24 is radially arranged center-aisle 22, by the intracavity inter-connection of primary valve 21 and the first valve seat 10.
In conjunction with shown in Figure 4, according to the fourth embodiment of the invention, it is essentially identical with first embodiment, is different in that, in the present embodiment, in the present embodiment, second valve seat 20 does not include sleeve 24, has been disposed radially center-aisle 22 at the middle part of the second valve seat 20, and the top of the second valve seat 20 is provided with pilot hole 23, pilot hole 23 is axially extending along the second valve seat 20, and is communicated to center-aisle 22. Pad 63 is set in the central diameter section of screw rod 80, and the path section of screw rod 80 is arranged in pilot hole 23, and is led by pilot hole 23.
In conjunction with shown in Figure 5, according to the fifth embodiment of the invention, it is essentially identical with the 4th embodiment, it is different in that, in the present embodiment, needle 60 offers draw-in groove 61, and draw-in groove 61 is provided with the back-up ring 64 that be connected fixing with draw-in groove 61 towards the side opening part of screw rod 80, first end end of screw rod 80 is positioned at draw-in groove 61 backstop on back-up ring 64, and the second end of return spring 30 is connected on back-up ring 64.
In the present embodiment, on the sidewall of draw-in groove 61 and be not provided with construction opening, therefore screw rod 80 needs the side opening part from draw-in groove 61 towards screw rod 80 to install in draw-in groove 61. Based on consideration easy for installation, in the present embodiment by back-up ring 64 and stop part 82 all with screw rod 80 separate machined molding, combine after machining and be arranged on the card channel opening of needle 60. Specifically, in the present embodiment, stop part 82 has stop lug and female thread, and the first end termination of screw rod 80 has external screw thread, for threadeding between stop part 82 with screw rod 80. Back-up ring 64 is set in outside screw rod 80, and fixing with needle 60 is connected, and the stop part 82 being pointed in draw-in groove 61 carries out backstop, it is prevented that stop part 82 is deviate from from needle 60. Back-up ring 64 can be welded on needle 60, it is also possible to the mode such as be threaded connection is fixedly installed on needle 60. Back-up ring 64 has the through hole for screw rod 80 traverse, and this through hole and screw rod 80 support there is no matching relationship.
When screw rod 80 and needle 60 are assembled, can first return spring 30 be set on screw rod 80, then back-up ring 64 is set on screw rod 80, the two ends making return spring 30 are connected on supporting construction 81 and back-up ring 64 respectively, then stop part 82 is arranged on the first end end of screw rod 80, and tighten so that back-up ring 64 is formed backstop action by stop part 82. After completing the installation of stop part 82, it is possible to keep the threaded engagement relation between stop part 82 and screw rod 80, it is also possible to be directly welded on screw rod 80 by stop part 82.
After the parts on screw rod 80 have assembled, first end of screw rod 80 is put into draw-in groove 61, make co-axially align between screw rod 80 and needle 60, then back-up ring 64 is tightened in the opening part of the draw-in groove 61 of needle 60, or directly back-up ring 64 is welded on the opening part of the draw-in groove 61 of needle 60, thus completing screw rod 80 and the assembling of needle 60.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. an electric expansion valve, it is characterized in that, including the first valve seat (10), second valve seat (20), return spring (30), horizontal adapter (40), vertical joint pipe (50), needle (60), nut (70) and screw rod (80), described screw rod (80) is axially movable screwed onto in described nut (70) along described nut (70), described needle (60) is axially movable relative to described screw rod (80), first end of described screw rod (80) is actively socketed in described needle (60), and drive described needle (60) axially reciprocating, described screw rod (80) is positioned on described needle (60) periphery outward and is provided with supporting construction (81), described return spring (30) is set in described screw rod (80) outward, first end of described return spring (30) is connected in described supporting construction (81), second end of described return spring (30) is connected on the first end end face of described needle (60).
2. electric expansion valve according to claim 1, it is characterized in that, described needle (60) offers draw-in groove (61), being provided for described screw rod (80) on the sidewall of described draw-in groove (61) and put into the construction opening (62) of described draw-in groove (61), the first end end of described screw rod (80) is provided with the stop part (82) being fastened in described draw-in groove (61) by described screw rod (80).
3. electric expansion valve according to claim 1, it is characterized in that, described needle (60) offers draw-in groove (61), described draw-in groove (61) is provided with the back-up ring (64) that be connected fixing with described draw-in groove (61) towards the side opening part of described screw rod (80), first end end of described screw rod (80) is positioned at described draw-in groove (61) backstop on described back-up ring (64), and the second end of described return spring (30) is connected on described back-up ring (64).
4. the electric expansion valve according to Claims 2 or 3, it is characterized in that, being provided with pad (63) on first end end face of described needle (60), the second end of described return spring (30) is connected on described pad (63).
5. electric expansion valve according to claim 1, it is characterized in that, described second valve seat (20) includes the axially extended sleeve (24) along described needle (60), described needle (60) is slidably arranged in described sleeve (24), and described sleeve (24) leads described needle (60).
6. electric expansion valve according to claim 1, it is characterized in that, described second valve seat (20) is arranged with sleeve (24) split, described sleeve (24) is fixedly installed on the end of described second valve seat (20), described needle (60) is slidably arranged in described sleeve (24), and described sleeve (24) leads described needle (60).
7. the electric expansion valve according to Claims 2 or 3, it is characterized in that, described needle (60) includes big footpath section and path section, described big footpath section is blocked in described second valve seat (20) outward, described nut (70) includes towards the axially extended auxiliary sleeve (71) of described second valve seat (20), the big footpath section of described needle (60) is slidably arranged in described auxiliary sleeve (71) and is led by described auxiliary sleeve (71), and described draw-in groove (61) is arranged on the big footpath section of described needle (60).
8. electric expansion valve according to claim 5, it is characterized in that, the sidewall of described sleeve (24) is radially arranged the center-aisle (22) connected with the primary valve (21) on described second valve seat (20).
9. electric expansion valve according to claim 4, it is characterized in that, path section that the big footpath section that described screw rod (80) includes coordinating with described nut (70) coordinates with described needle (60) and be connected to the central diameter section between described big footpath section and path section, described stop part (82) is arranged on the end, one end away from described central diameter section of described path section, described supporting construction (81) is arranged on the position being connected with described big footpath section of described central diameter section, and described pad (63) is set in described central diameter section.
10. electric expansion valve according to claim 1, it is characterized in that, described supporting construction (81) and described screw rod (80) be one-body molded or described supporting construction (81) fixed cover is located at described screw rod (80) outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410588655.5A CN105626876A (en) | 2014-10-28 | 2014-10-28 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410588655.5A CN105626876A (en) | 2014-10-28 | 2014-10-28 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105626876A true CN105626876A (en) | 2016-06-01 |
Family
ID=56042074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410588655.5A Pending CN105626876A (en) | 2014-10-28 | 2014-10-28 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105626876A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107956890A (en) * | 2016-10-14 | 2018-04-24 | 盾安环境技术有限公司 | A kind of air conditioning system for vehicle electric expansion valve |
| WO2018099422A1 (en) * | 2016-11-30 | 2018-06-07 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and refrigeration system having same |
| CN108317259A (en) * | 2017-01-18 | 2018-07-24 | 浙江三花制冷集团有限公司 | A kind of electric expansion valve |
| CN111623126A (en) * | 2019-02-28 | 2020-09-04 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| WO2020259657A1 (en) * | 2019-06-28 | 2020-12-30 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN112524260A (en) * | 2020-12-14 | 2021-03-19 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
| EP3992501A4 (en) * | 2019-06-28 | 2023-07-12 | Zhejiang Sanhua Intelligent Controls CO., Ltd. | Electronic expansion valve |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956890A (en) * | 2016-10-14 | 2018-04-24 | 盾安环境技术有限公司 | A kind of air conditioning system for vehicle electric expansion valve |
| WO2018099422A1 (en) * | 2016-11-30 | 2018-06-07 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and refrigeration system having same |
| US11287167B2 (en) | 2017-01-18 | 2022-03-29 | Zhejiang Sanhua Climate And Appliance Controls Group Co., Ltd | Electronic expansion valve and assembly method therefor |
| CN108317259A (en) * | 2017-01-18 | 2018-07-24 | 浙江三花制冷集团有限公司 | A kind of electric expansion valve |
| CN108317259B (en) * | 2017-01-18 | 2020-05-05 | 浙江三花制冷集团有限公司 | Electronic expansion valve |
| CN111623126A (en) * | 2019-02-28 | 2020-09-04 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| JP2022526510A (en) * | 2019-06-28 | 2022-05-25 | 浙江三花智能控制股▲ふん▼有限公司 | Electronic expansion valve |
| KR20210137564A (en) * | 2019-06-28 | 2021-11-17 | 쯔지앙 산화 인텔리전트 컨트롤스 씨오., 엘티디. | Electronic Expansion Valve |
| WO2020259657A1 (en) * | 2019-06-28 | 2020-12-30 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| EP3992501A4 (en) * | 2019-06-28 | 2023-07-12 | Zhejiang Sanhua Intelligent Controls CO., Ltd. | Electronic expansion valve |
| KR102578174B1 (en) * | 2019-06-28 | 2023-09-13 | 쯔지앙 산화 인텔리전트 컨트롤스 씨오., 엘티디. | Electronic expansion valve |
| JP7385673B2 (en) | 2019-06-28 | 2023-11-22 | 浙江三花智能控制股▲ふん▼有限公司 | electronic expansion valve |
| US11906055B2 (en) | 2019-06-28 | 2024-02-20 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electronic expansion valve |
| US12140354B2 (en) | 2019-06-28 | 2024-11-12 | Zhejiang Sanhua Intelligent Controls, Co., Ltd | Electronic expansion valve |
| CN112524260A (en) * | 2020-12-14 | 2021-03-19 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
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Application publication date: 20160601 |