CN113669475B - Electric valve - Google Patents
Electric valve Download PDFInfo
- Publication number
- CN113669475B CN113669475B CN202110823875.1A CN202110823875A CN113669475B CN 113669475 B CN113669475 B CN 113669475B CN 202110823875 A CN202110823875 A CN 202110823875A CN 113669475 B CN113669475 B CN 113669475B
- Authority
- CN
- China
- Prior art keywords
- valve
- bearing
- valve core
- magnetic rotor
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims abstract description 6
- 238000005096 rolling process Methods 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0442—Spindles and actuating means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an electric valve, which comprises a motor stator, a valve body assembly, an execution assembly and an axial limiting device, wherein the valve body assembly comprises a valve seat and an isolation sleeve, and the isolation sleeve is fixed on the valve seat; the execution assembly comprises a screw rod, a magnetic rotor and a bearing valve core, wherein the screw rod is fixed at the top part in the isolation sleeve, the center of the magnetic rotor is provided with an internal thread section matched with the screw rod, and the lower part of the magnetic rotor is connected with the bearing valve core; when the rotating magnetic field generated by the motor stator interacts with the magnetic field generated by the magnetic rotor, and under the transmission action of the screw rod and the internal thread section, the bearing valve core in the valve cavity is driven to do up-down axial displacement movement, so that the flow is regulated; and under the action of the axial limiting device, the position control of the bearing valve core is realized. The electric valve has the advantages of high maneuverability, good internal sealing performance, long service life, symmetrical bidirectional flow and the like.
Description
Technical Field
The invention relates to the technical field of fluid control, in particular to an electric valve.
Background
The electric valve is used as an important component for forming a refrigerating system and is widely applied to refrigerating units, refrigeration houses, supermarket refrigeration houses and the like. The main function of the electric valve is to realize the refined adjustment and opening and closing actions of the flow.
At present, the main structure of the domestic and foreign electric valve is a needle valve structure, and most of moment is lost on threads in the rising process of a valve core under the influence of axial pressure under the system pressure, so that great torque of a motor is required to be consumed, and the maneuverability of the valve is reduced; the valve has the structure that the valve core is in a cantilever state, so that the valve core is easy to wear in the opening and closing process, the internal leakage quantity is increased, and the flow control of a refrigerating system is unstable.
So far, most of the electric control valves at home and abroad have asymmetric valve ports for regulating flow, basically one in radial direction and the other in axial direction, so that the forward flow characteristic and the reverse flow characteristic are unequal, and the system is not beneficial to finely regulating the flow.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an electric valve.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The utility model provides an electric valve, includes motor stator, valve body subassembly, execution subassembly, axial stop device, its characterized in that: the valve body assembly comprises a valve seat and an isolation sleeve, and the isolation sleeve is fixed on the valve seat;
the execution assembly comprises a screw rod, a magnetic rotor and a bearing valve core, wherein the screw rod is fixed at the top part in the isolation sleeve, the center of the magnetic rotor is provided with an internal thread section matched with the screw rod, and the lower part of the magnetic rotor is connected with the bearing valve core; a valve cavity matched with the bearing valve core is arranged in the valve seat;
when the rotating magnetic field generated by the motor stator interacts with the magnetic field generated by the magnetic rotor, and under the transmission action of the screw rod and the internal thread section, the bearing valve core in the valve cavity is driven to do up-down axial displacement movement, so that the flow is regulated; and meanwhile, under the action of the axial limiting device, the position control of the bearing valve core is realized.
In the above-mentioned electric valve, the said axial stop device includes the guide spring fixed on said magnetic rotor, moving spring cooperating with guide spring, stop lever fixed on valve base, the said stop lever contacts with said moving spring; when the magnetic rotor rotates, the guide spring is fixed, and the movable spring realizes the opening and closing actions and flow control of the electric valve under the limit action of the stop rod and the spiral guiding action of the guide spring.
In the above-mentioned electric valve, the lead screw includes the external screw thread section that matches with the internal screw thread section of magnetic rotor, the top of external screw thread section is equipped with the stalk portion, the stalk portion with the center of top is fixed together in the isolation sleeve, aim at prevent that magnetic rotor takes place radial offset, with the isolation sleeve collides.
In the above electric valve, a limit blind hole matched with the stop rod is arranged on the upper end surface of the valve seat, and the limit blind hole is arranged on the periphery of the valve cavity;
In the above electric valve, a first flow valve port and a second flow valve port which are communicated with the valve cavity are formed on the outer wall of the valve seat, and the first flow valve port and the second flow valve port are symmetrical in position and identical in shape, so that the forward flow characteristic and the reverse flow characteristic are equal.
In the above-mentioned electric valve, the external portion of the internal thread section of the magnetic rotor forms the rotation shaft post that matches with the hole of the guide spring, the hole of the moving spring, the below of the rotation shaft post is equipped with the fixed shaft post that matches with the bearing valve core, the top of fixed shaft post just be equipped with the second fixed part that matches with the first fixed part of guide spring on the rotation shaft post, form the magnetic pole portion all around in the outside of rotation shaft post, the magnetic field that the magnetic pole portion produced can interact with the magnetic field that produces when the motor stator circular telegram.
In the above-mentioned electric valve, the bearing valve core includes a bearing inner sleeve, a rolling part, and a valve core sleeve, the bearing inner sleeve is fixed on a fixed shaft post of the magnetic rotor, and the rolling part is located between the bearing inner sleeve and the valve core sleeve; the outer wall of the valve core sleeve is matched with the inner wall of the valve cavity, and the purpose of using the bearing valve core is to enable the bearing inner sleeve to synchronously rotate along with the magnetic rotor, but the valve core sleeve does not rotate along with the magnetic rotor and only axially moves in a displacement mode.
In the above-mentioned electric valve, the valve core sleeve has a height greater than that of the first flow valve port, so that the flow rate of the fluid is not leaked when the electric valve is in the closed position.
Compared with the prior art, the invention has the following beneficial effects:
Firstly, through the first flow valve port and the second flow valve port in the invention, the bidirectional flow equivalent is realized by the symmetrical positions and the same shape.
Secondly, through the precise matching of the bearing valve core and the valve cavity in the valve seat, on one hand, the bearing valve core is always arranged in the valve cavity under the action of the axial limiting device, and the bearing valve core cannot shake under the action of fluid, so that the bearing valve core is worn; on the other hand, the electrically operated valve does not leak inwardly in the closed state.
Finally, through the matching of the outer wall of the valve core sleeve and the inner wall of the valve cavity, when the electric valve is in a closed state, and when a first flow valve port or a second flow valve port in fluid enters, in the ascending process, the valve core sleeve generates downward linear sliding friction force under the lateral pressure action of the fluid on the valve core sleeve; therefore, the sliding friction force is overcome, the large motor torque is not needed, and the maneuverability of the electric valve is further improved.
Drawings
The invention will be further described with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of an axial stop device according to the present invention;
FIG. 3 is a schematic view of a valve seat according to the present invention;
FIG. 4 is a schematic cross-sectional view of a valve seat according to the present invention;
FIG. 5 is a schematic view of the structure of the screw rod in the present invention;
FIG. 6 is a schematic diagram of a magnetic rotor according to the present invention;
FIG. 7 is a schematic view of a bearing cartridge according to the present invention;
FIG. 8 is a schematic view of a guide spring according to the present invention;
In the figure, 1-motor stator; 2-valve seat, 21-valve cavity, 22-limit blind hole, 23-first flow valve port, 24-second flow valve port; 3-isolating sleeve; 4-screw rod, 41-external thread section and 42-handle part; 5-magnetic rotor, 51-internal thread section, 52-rotary shaft column, 53-fixed shaft column, 54-second fixed part and 55-magnetic pole part; 6-a bearing valve core, 61-a bearing inner sleeve, 62-a rolling part and 63-a valve core sleeve; 7-guide springs, 71-first fixing parts, 72-lower stop parts, 73-spiral guide grooves and 74-upper stop parts; 8-a movable spring; 9-stop bar.
Detailed Description
The technical scheme of the invention is further specifically described by the following examples.
Referring to fig. 1, an electric valve comprises a motor stator 1, a valve body assembly, an execution assembly and an axial limiting device, and is characterized in that:
the valve body assembly comprises a valve seat 2 and an isolation sleeve 3, and the isolation sleeve 3 is fixed on the valve seat 2;
The execution assembly comprises a screw rod 4, a magnetic rotor 5 and a bearing valve core 6, wherein the screw rod 4 is fixed at the top in the isolation sleeve 3, the center of the magnetic rotor 5 is provided with an internal thread section 51 matched with the screw rod 3, and the lower part of the magnetic rotor 5 is connected with the bearing valve core 6; a valve cavity 21 matched with the bearing valve core 6 is arranged in the valve seat 2;
When the rotating magnetic field generated by the motor stator 1 interacts with the magnetic field generated by the magnetic rotor 5, and under the transmission action of the screw rod 3 and the internal thread section 51, the bearing valve core 6 in the valve cavity 21 is driven to do up-down axial displacement movement, so that the flow is regulated; and meanwhile, the position control of the bearing valve core 6 is realized under the action of the axial limiting device.
The axial stop device of the present invention will be further specifically described with reference to fig. 2-8, as follows:
The axial limiting device comprises a guide spring 7 fixed on the magnetic rotor 5, a movable spring 8 matched with the guide spring 7, and a stop rod 9 fixed on the valve seat 2; when the magnetic rotor 5 rotates, the stop rod 9 contacts with the movable spring 8;
when the magnetic rotor 5 rotates, the guide spring 7 is fixed on the magnetic rotor 5, so that the guide spring 7 rotates along with the magnetic rotor 5, and the movable spring 8 realizes the opening and closing actions and flow control of the electric valve under the limit action of the stop rod 9 and the spiral guiding action of the guide spring 8.
The open and closed states of the motor-operated valve are described in further detail: when the movable spring 8 is arranged at the lower stop part of the guide spring 7, the axial valve core 6 is arranged at the upper parts of the first flow valve port 23 and the second flow valve port 24, and the electric valve is in a fully opened state; when the moving spring 8 is at the upper stop part of the guide spring 7, the axial valve core 6 is positioned at the lower parts of the first flow valve port 23 and the second flow valve port 24, the axial valve core completely blocks the first flow valve port 23 and the second flow valve port 24, and the electric valve is in a completely closed state.
The flow regulating function of the electrically operated valve is described in further detail: when the position of the moving spring 8 is between the lower stop portion and the upper stop portion of the guide spring 7, the position of the bearing valve core 6 changes with the position of the magnetic rotor 5, and the flow area changes with the position, so that the flow rate adjusting function is realized.
The valve seat 2 of the present invention will be described in further detail with reference to fig. 3 and 4, as follows:
wherein, the upper end surface of the valve seat 2 is provided with a limit blind hole 22 matched with the stop rod 9, and the limit blind hole 22 is arranged at the periphery of the valve cavity 21;
wherein, a first flow valve port 23 and a second flow valve port 24 communicated with the valve cavity 21 are formed on the outer wall of the valve seat 2, and the first flow valve port 23 and the second flow valve port 24 are symmetrical in position and same in shape.
By symmetrically arranging and forming the two flow valve ports to be the same, bidirectional flow equality is realized, and flow characteristic curves are the same, so that the control program of the refrigerating system unit is conveniently designed.
The screw 4 of the actuator assembly of the present invention will be further specifically described with reference to fig. 5, as follows:
The screw rod 4 comprises an external thread section 41 matched with the internal thread section 51 of the magnetic rotor 5, a handle 42 is arranged above the external thread section 41, and the handle 42 is fixed with the center of the inner top of the isolation sleeve 3. In the invention, the fixing mode of the screw rod 4 and the isolation sleeve 3 is preferably selected; and (5) resistance welding.
The magnetic rotor 5 in the actuator assembly of the present invention will be further specifically described with reference to fig. 6, as follows:
The outer part of the internal thread section 51 of the magnetic rotor 5 forms a rotating shaft post 52 matched with the inner hole of the guide spring 7 and the inner hole of the movable spring 8, a fixed shaft post 53 matched with the bearing valve core 6 is arranged below the rotating shaft post 52, a second fixing part 54 matched with the first fixing part 71 of the guide spring 7 is arranged above the fixed shaft post 53 and on the rotating shaft post 51, a magnetic pole part 55 is formed around the outer side of the rotating shaft post 52, and a magnetic field generated by the magnetic pole part 55 can interact with a magnetic field generated when the motor stator 1 is electrified.
The bearing cartridge 6 in the actuator assembly of the present invention will be further specifically described with reference to fig. 7, as follows:
the bearing cartridge 6 includes a bearing inner sleeve 61, a rolling portion 62, a cartridge sleeve 63,
Wherein the bearing inner sleeve 61 is fixed on the fixed shaft post 53 of the magnetic rotor 5, and the rolling part 62 is positioned between the bearing inner sleeve 61 and the valve core sleeve 63; the outer wall of the valve core sleeve 63 is matched with the inner wall of the valve cavity 21; in the present invention, the spool cover 63 is elastically deformable under fluid pressure and can return to its original shape without being affected by pressure.
The rolling part 62 is preferably a ball, which is beneficial to further reducing radial friction resistance and improving the maneuverability of the electric valve;
The valve core sleeve 63 is higher than the first flow valve port 23, so that the flow of fluid is not leaked when the electric valve is in the closed position, and the valve core sleeve 63 is always in the valve cavity 21 and is always in precise fit with the valve cavity 21, so that the valve core sleeve 63 is not easy to wear, the service life of the electric valve is prolonged, and the flow control of the refrigerating system is stable.
According to the above detailed description of the male screw section 41 of the screw rod 4 and the female screw section 51 of the magnetic rotor 5, the transmission function of the electric valve is realized.
From the above detailed description, it is further specifically described how the motorized valve of the present invention improves its mobility:
In the invention, the surfaces of the valve cavity 21 and the bearing valve core 6 are subjected to surface finish treatment;
Through the matching of the outer wall of the bearing valve core 6 and the inner wall of the valve cavity 21, when the electric valve is in a closed state and the first flow valve port 23 or the second flow valve port 24 in fluid is in, in the opening process, the magnetic rotor 5 drives the bearing inner sleeve 61 to synchronously rotate, and the valve core sleeve 63 does not rotate along with the magnetic rotor 5 under the action of the rolling part 62 and only moves in an axial displacement manner; the valve core sleeve 63 generates downward sliding friction force under the lateral pressure of the fluid to the valve core sleeve 63; during the transmission, the influence of fluid pressure on the threads is eliminated. Therefore, the sliding friction force is overcome, the consumption of large motor torque is avoided, and the maneuverability of the electric valve is further improved.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to those skilled in the art to understand the content of the present invention and accordingly implement the present invention without limiting the scope of the present invention. All equivalent changes or modifications made in accordance with the essence of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides an electric valve, includes motor stator (1), valve body subassembly, execution assembly, axial stop device, its characterized in that: the valve body assembly comprises a valve seat (2) and an isolation sleeve (3), and the isolation sleeve (3) is fixed on the valve seat (2); the execution assembly comprises a screw rod (4), a magnetic rotor (5) and a bearing valve core (6), wherein the screw rod (4) is fixed at the top in the isolation sleeve (3), an internal thread section (51) matched with the screw rod (4) is arranged at the center of the magnetic rotor (5), and the lower part of the magnetic rotor (5) is connected with the bearing valve core (6); a valve cavity (21) matched with the bearing valve core (6) is arranged in the valve seat (2); when a rotating magnetic field generated by the motor stator (1) interacts with a magnetic field generated by the magnetic rotor (5), and under the transmission action of the screw rod (4) and the internal thread section (51), the bearing valve core (6) in the valve cavity (21) is driven to do vertical axial displacement movement, so that the flow is regulated; simultaneously, under the action of the axial limiting device, the position control of the bearing valve core (6) is realized;
The bearing valve core (6) comprises a bearing inner sleeve (61), a rolling part (62) and a valve core sleeve (63), wherein the bearing inner sleeve (61) is fixed on a fixed shaft post (53) of the magnetic rotor (5), and the rolling part (62) is positioned between the bearing inner sleeve (61) and the valve core sleeve (63); the outer wall of the valve core sleeve (63) is matched with the inner wall of the valve cavity (21).
2. An electrically operated valve as set forth in claim 1 wherein: the axial limiting device comprises a guide spring (7) fixed on the magnetic rotor (5), a movable spring (8) matched with the guide spring (7) and a stop rod (9) fixed on the valve seat (2), wherein the stop rod (9) is in contact with the movable spring (8).
3. An electrically operated valve as set forth in claim 1 wherein: the screw rod (4) comprises an external thread section (41) matched with an internal thread section (51) of the magnetic rotor (5), a handle (42) is arranged above the external thread section (41), and the handle (42) is fixed with the center of the inner top of the isolation sleeve (3).
4. An electrically operated valve as claimed in claim 1 or 2, wherein: the upper end face of the valve seat (2) is provided with a limit blind hole (22) matched with the stop rod (9), and the limit blind hole (22) is arranged at the periphery of the valve cavity (21); the valve seat is characterized in that a first flow valve port (23) and a second flow valve port (24) which are communicated with the valve cavity (21) are formed on the outer wall of the valve seat (2), and the first flow valve port (23) and the second flow valve port (24) are symmetrical in position and identical in shape.
5. A motor-operated valve as claimed in any one of claims 1 to 3, wherein: the magnetic rotor is characterized in that a rotary shaft column (52) matched with an inner hole of the guide spring (7) and an inner hole of the movable spring (8) is formed outside the inner thread section (51) of the magnetic rotor (5), a fixed shaft column (53) matched with the bearing valve core (6) is arranged below the rotary shaft column (52), a second fixing part (54) matched with a first fixing part (71) of the guide spring (7) is arranged above the fixed shaft column (53) and on the rotary shaft column (52), magnetic pole parts (55) are formed around the outer side of the rotary shaft column (52), and a magnetic field generated by the magnetic pole parts (55) can interact with a magnetic field generated when the motor stator (1) is electrified.
6. An electrically operated valve as set forth in claim 1 wherein: the height of the valve core sleeve (63) is larger than that of the first flow valve port (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110823875.1A CN113669475B (en) | 2021-07-21 | 2021-07-21 | Electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110823875.1A CN113669475B (en) | 2021-07-21 | 2021-07-21 | Electric valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113669475A CN113669475A (en) | 2021-11-19 |
| CN113669475B true CN113669475B (en) | 2024-06-14 |
Family
ID=78539739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110823875.1A Active CN113669475B (en) | 2021-07-21 | 2021-07-21 | Electric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113669475B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1467397A (en) * | 2002-06-25 | 2004-01-14 | 株式会社不二工机 | Motor-operated valve |
| CN102213509A (en) * | 2011-06-02 | 2011-10-12 | 上海俊乐制冷自控元件有限公司 | Electronic expansion valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06323460A (en) * | 1993-05-11 | 1994-11-25 | Taiheiyo Kogyo Kk | Motor-driven valve |
| JP4701489B2 (en) * | 2000-11-15 | 2011-06-15 | パナソニック株式会社 | Shut-off valve |
| CN101956830B (en) * | 2009-07-17 | 2013-06-12 | 浙江三花股份有限公司 | Electronic expansion valve |
| JP6175715B2 (en) * | 2013-11-29 | 2017-08-09 | 株式会社テージーケー | Stepping motor driven control valve |
| CN208519284U (en) * | 2018-04-02 | 2019-02-19 | 浙江三花制冷集团有限公司 | A kind of motor-driven valve |
-
2021
- 2021-07-21 CN CN202110823875.1A patent/CN113669475B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1467397A (en) * | 2002-06-25 | 2004-01-14 | 株式会社不二工机 | Motor-operated valve |
| CN102213509A (en) * | 2011-06-02 | 2011-10-12 | 上海俊乐制冷自控元件有限公司 | Electronic expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113669475A (en) | 2021-11-19 |
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