CN104482272A - Electric commutator - Google Patents
Electric commutator Download PDFInfo
- Publication number
- CN104482272A CN104482272A CN201410844643.4A CN201410844643A CN104482272A CN 104482272 A CN104482272 A CN 104482272A CN 201410844643 A CN201410844643 A CN 201410844643A CN 104482272 A CN104482272 A CN 104482272A
- Authority
- CN
- China
- Prior art keywords
- vent
- intercommunicating pore
- valve body
- spool
- communicated
- 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
- 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
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
Abstract
The invention relates to the field of air conditioner accessories, in particular to an electric commutator. The electric commutator comprises a valve body, a valve element and a driving motor, wherein the valve element is rotationally arranged in the valve body; the driving motor is arranged outside the valve body, is fixedly connected with the valve element and can drive the valve element to rotate; a first vent hole, a second vent hole, a third vent hole and a fourth vent hole which are communicated with an inner wall respectively are formed in an outer wall of the valve body; the first vent hole is coaxial with the third vent hole; the second vent hole is coaxial with the fourth vent hole; the axis of the first vent hole is perpendicular to that of the second vent hole; the valve element is hermetically connected with the valve body; a first communication hole and a second communication hole are formed in the valve element; two ends of the first communication hole are communicated with the first vent hole and the second vent hole respectively; two ends of the second communication hole are communicated with the third vent hole and the fourth vent hole respectively. The electric commutator is simple in structure, easy to manufacture and convenient to operate, the sealing property and the electricity saving performance are improved, and meanwhile, the manufacturing cost and the using cost are reduced.
Description
Technical field
The present invention relates to air conditioner parts field, in particular to the electronic commutator of one.
Background technique
Electromagnetism four-way change-over valve on existing air-conditioning forms primarily of main valve, control valve 1 and capillary tube.Form movable valve plug by slide block 2, piston 3 in main valve, the valve body two ends of main valve have through hole that the capillary tube at two ends can be made to be connected with valve intracorporeal space, and slide block 2 two ends are fixed with piston 3 respectively, and the space on piston 3 both sides communicates by the exhaust port on piston 3.Control valve is made up of valve body and electromagnetic coil.Needle-like spool is had in valve body.There are three (or four) capillary tubies to be connected between main valve with control valve, form the entirety of four-way change-over valve.
Like this be provided with following shortcoming:
Main valve body internal leakage, certain media does not participate in acting, causes compressor power input to be 58.6% under normal state, has had a strong impact on the performance of heat pump unit.
The capillary tube of electromagnetism four-way change-over valve easily blocks, and plastic slide block 2 is easily out of shape and causes whole product rejection in main valve body high-temperature soldering process.
In using process, rate of fault is higher.
Commutate because electromagnetism four-way change-over valve must rely on air pressure to promote slide block 2, when pressure is inadequate, is easy to cause slide block 2 to commutate not in place, causes air conditioner to break down, whole compressor can be caused time serious to scrap or other serious accidents occur.
Manufacturing process is complicated, needs a large amount of special device.
Summary of the invention
The object of the present invention is to provide a kind of electronic commutator, to solve the above problems.
Provide a kind of electronic commutator in an embodiment of the present invention, comprise valve body, spool and drive motor;
Described valve core rotation is arranged in described valve body;
Described drive motor is arranged on outside described valve body, is fixedly connected with described spool, can drive described valve core rotation;
The outer wall of described valve body is provided with the first vent, the second vent, the 3rd vent and the 4th vent that are all communicated with inwall;
Described first vent is coaxial with described 3rd vent;
Described second vent is coaxial with described 4th vent;
The axis of described first vent and the axes normal of described second vent;
The axis of described 3rd vent and the axes normal of described 4th vent;
The axis of described first vent, described second vent, described 3rd vent and described 4th vent all with the axes normal of described valve body;
Described spool is connected with described valve seal;
Described spool is provided with the first intercommunicating pore and the second intercommunicating pore;
The two ends of described first intercommunicating pore are communicated with described second vent with described first vent respectively;
The two ends of described second intercommunicating pore are communicated with described 3rd vent and described 4th vent respectively.
Further, the inner chamber of described valve body is cylindrical cavity;
Described spool is cylindrical body;
Described spool is arranged in described cylindrical cavity, and coaxial with described cylindrical cavity;
Described spool can only rotate in described cylindrical cavity centered by the axis of described spool.
Further, the axis of described first intercommunicating pore is camber line;
And/or,
The axis of described second intercommunicating pore is camber line.
Further, described first intercommunicating pore is circular hole;
And/or,
Described second intercommunicating pore is circular hole.
Further, described valve body is cylindrical body.
Further, described first vent, described second vent, described 3rd vent are connected the first breathing pipe, the second breathing pipe, the 3rd breathing pipe and the 4th breathing pipe respectively with described 4th vent.
Further, described first intercommunicating pore two ends are provided with elastic sealing device, for when described first intercommunicating pore is communicated with described first vent, be communicated with described second vent time sealing.
Further, described elastic sealing device comprises power spring and elastic seal ring;
The two ends of described first intercommunicating pore are provided with installation step;
One end and the described installation step of described power spring offset, and the side of the other end and described elastic seal ring offsets;
The opposite side of described elastic seal ring and the inwall of described valve body offset.
Further, electronic commutator also comprises square shaft;
Described spool is provided with square hole;
One end of described square shaft is arranged in described square hole;
The other end of described square shaft is connected with described drive motor.
Further, described drive motor is reverse rotating motor.
Electronic commutator provided by the invention, spool and valve body are rotationally connected, again spool is connected with drive motor, valve body arranges the first vent, second vent and the 3rd vent, 4th vent is totally four vents, spool arranges the first intercommunicating pore, two ends are communicated with the second vent with the first vent respectively, spool arranges the second intercommunicating pore, two ends are communicated with the 4th vent with the 3rd vent respectively, during by drive motor rotational valve core, the state of the first intercommunicating pore is changed, its two ends are communicated with third connecting hole with the second intercommunicating pore respectively, the state of the second intercommunicating pore is changed, its two ends are communicated with the 4th intercommunicating pore with the first intercommunicating pore respectively, and then achieve the function of commutation.Structure of the present invention is simple, easy to manufacture, easy to operate, while improve sealing and electricity saving performance, reduces manufacture cost and user cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the position one of electronic commutator in present air-conditioning;
Fig. 2 is the structural representation of the position two of electronic commutator in present air-conditioning;
Fig. 3 is the form structure schematic diagram of the electronic commutator of the present invention;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is the structural representation of the elastic sealing device of the electronic commutator of the present invention.
Reference character:
1: control valve 2: slide block 3: piston
4: the first breathing pipes 5: drive motor 6: square shaft
7: the second breathing pipes 8: valve body 9: the three breathing pipe
10: spool 11: the first intercommunicating pore 12: the second intercommunicating pore
13: the four breathing pipe 14: the first vent 15: the second vents
16: the three vent 17: the four vents 18: square hole
19: power spring 20: elastic seal ring 21: installation step
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, carry out clear, complete description by technological scheme of the present invention below.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, belong to the scope that the present invention protects.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, also it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
As shown in drawings, the invention provides a kind of electronic commutator, comprise valve body 8, spool 10 and drive motor 5;
Spool 10 rotates and is arranged in valve body 8;
Drive motor 5 is arranged on outside valve body 8, is fixedly connected with spool 10, and movable valve plug 10 can be with to rotate;
The outer wall of valve body 8 is provided with the first vent 14, second vent 15, the 3rd vent 16 and the 4th vent 17 that are all communicated with inwall;
4th vent 17 is coaxial with the second vent 15;
First vent 14 is coaxial with the 3rd vent 16;
The axis of the first vent 14 and the axes normal of the second vent 15;
The axis of the first vent 14, second vent 15, the 3rd vent 16 and the 4th vent 17 all with the axes normal of valve body 8;
Spool 10 and valve body 8 are tightly connected;
Spool 10 is provided with the first intercommunicating pore 11 and the second intercommunicating pore 12;
The two ends of the first intercommunicating pore 11 are communicated with the second vent 15 with the first vent 14 respectively;
The two ends of the second intercommunicating pore 12 are communicated with the 3rd vent 16 and the 4th vent 17 respectively.
Be distributed with four vents, i.e. the first vent 14, second vent 15, the 3rd vent 16 and the 4th vent 17 around valve body 8 etc.In use, the first vent 14 connects compressor high-voltage tube, and the second vent 15 connects condenser, and the 3rd vent 16 connects compressor low-voltage tube, and the 4th vent 17 connects vaporizer.
Spool 10 arranges two intercommunicating pores, i.e. the first intercommunicating pore 11 and the second intercommunicating pore 12.
When air-conditioning is set to refrigeration mode, the two ends of the first intercommunicating pore 11 are communicated with the second vent 15 with the first vent 14 respectively, and the two ends of the second intercommunicating pore 12 are communicated with the 4th vent 17 with the 3rd vent 16 respectively.
When air conditioner is set to heating mode, the two ends of rotational valve core 10 to the first intercommunicating pore 11 are communicated with the 4th vent 17 with the first vent 14 respectively, and the two ends of the second intercommunicating pore 12 are communicated with the 3rd vent 16 with the second vent 15 respectively.
Click as driving for arranging DC micromotor at valve body 8, the forward and reverse rotation of DC micromotor band movable valve plug 10 90 DEG C realizes commutation function.
Be preferred embodiment that the inner chamber of valve body is cylindrical cavity;
Spool is cylindrical body;
Spool is arranged in cylindrical cavity, and coaxial with cylindrical cavity;
Spool can only rotate in cylindrical cavity centered by the axis of spool.
By inner chamber is set to cylindrical cavity, after spool is set to cylindrical body, spool with its axis for axle carries out Double-directional rotary, that is can only be only had two degrees of freedom, and then ensure that the accuracy of work when rotating.
Be preferred embodiment that the axis of the first intercommunicating pore 11 is camber line;
And/or,
The axis of the second intercommunicating pore 12 is camber line.
The axis of the first intercommunicating pore 11 and the second intercommunicating pore 12 is set to camber line, track by two intercommunicating pores is all set to arc, make wind within it by time the windage that runs into minimum, and then the efficiency freezing or heat can be accelerated, also be equivalent to the utilization ratio that improve resource, save cost.
Be preferred embodiment that the first intercommunicating pore is circular hole;
And/or,
Second intercommunicating pore is circular hole.
Further, valve body is cylindrical body.
Be preferred embodiment that the first vent 14, second vent 15, the 3rd vent 16 and the 4th vent 17 are connected the first breathing pipe 4, second breathing pipe 7, the 3rd breathing pipe 9 and the 4th breathing pipe 13 respectively.
A breathing pipe is all set in the outer end of four vents, vent is connected with other component such as condenser etc. easily.
The Placement of vent and breathing pipe can have a lot, as being welding, also can be one-body molded etc.
Be preferred embodiment that the first intercommunicating pore 11 two ends are provided with elastic sealing device, for when the first intercommunicating pore 11 is communicated with the first vent 14, be communicated with the second vent 15 time sealing.
Being sealed when being communicated with vent by the two ends of elastic sealing device by the first intercommunicating pore 11, preventing the gas leak phenomenon when being ventilated by the first intercommunicating pore 11 from occurring, and then improve working efficiency.
Elastic sealing device is also set at the two ends of the second intercommunicating pore 12, all intercommunicating pores is all carried out encapsulation process, as much as possible improve resource utilization, improve working efficiency, saved cost.
Be preferred embodiment that elastic sealing device comprises power spring 19 and elastic seal ring 20;
The two ends of the first intercommunicating pore 11 are provided with installation step 21;
One end and the installation step 21 of power spring 19 offset, and the side of the other end and elastic seal ring 20 offsets;
The opposite side of elastic seal ring 20 and the inwall of valve body 8 offset.
Elastic seal ring 20 is not when being communicated with vent, one end and power spring 19 offset, the inwall of the other end and valve body 8 offsets, in rotation to when being communicated with vent, one end of elastic seal ring 20 is communicated with vent, owing to being subject to the elastic force effect of power spring 19, and then elastic seal ring 20 will be made to seal between spool 10 and valve body 8, prevent gas to enter between spool 10 and valve body 8 after vent is come in, improve working efficiency.
The structure that it is pointed out that elastic sealing device can be said structure, but it is not only confined to said structure, and it can also be other structures, as spherical shaped elastomeric telescopic pipe etc., as long as it can will carry out between vent and intercommunicating pore sealing.
Be preferred embodiment that electronic commutator also comprises square shaft 6;
Spool 10 is provided with square hole 18;
One end of square shaft 6 is arranged in square hole 18;
The other end of square shaft 6 is connected with drive motor 5.
Spool 10 arranges square hole 18, drives square shaft 6 to rotate by drive motor 5, square shaft 6 is arranged in square hole 18, and then the rotation of band movable valve plug 10 achieves annular function.
Be preferred embodiment that drive motor 5 is reverse rotating motor.
Drive motor 5 is set to reverse rotating motor, spool 10 can be made to carry out rotating along inverse both direction, operate more simple and convenient.
Electronic commutator provided by the invention, spool 10 and valve body 8 are rotationally connected, again spool 10 is connected with drive motor 5, valve body 8 arranges the first vent 14, second vent 15 and the 3rd vent 16 totally three vents, spool 10 arranges the first intercommunicating pore 11, two ends are communicated with the second vent 15 with the first vent 14 respectively, during by drive motor 5 rotational valve core 10, the state of the first intercommunicating pore 11 is changed, its two ends are communicated with third connecting hole with the second intercommunicating pore 12 respectively, and then achieve the function of commutation.Structure of the present invention is simple, easy to manufacture, easy to operate, while improve sealing and electricity saving performance, reduces cost.
Last it is noted that above each embodiment is only in order to illustrate technological scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristics; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technological scheme.
Claims (10)
1. an electronic commutator, is characterized in that, comprises valve body, spool and drive motor;
Described valve core rotation is arranged in described valve body;
Described drive motor is arranged on outside described valve body, is fixedly connected with described spool, can drive described valve core rotation;
The outer wall of described valve body is provided with the first vent, the second vent, the 3rd vent and the 4th vent that are all communicated with inwall;
Described first vent is coaxial with described 3rd vent;
Described second vent is coaxial with described 4th vent;
The axis of described first vent and the axes normal of described second vent;
The axis of described 3rd vent and the axes normal of described 4th vent;
The axis of described first vent, described second vent, described 3rd vent and described 4th vent all with the axes normal of described valve body;
Described spool is connected with described valve seal;
Described spool is provided with the first intercommunicating pore and the second intercommunicating pore;
The two ends of described first intercommunicating pore are communicated with described second vent with described first vent respectively;
The two ends of described second intercommunicating pore are communicated with described 3rd vent and described 4th vent respectively.
2. electronic commutator according to claim 1, is characterized in that, the inner chamber of described valve body is cylindrical cavity;
Described spool is cylindrical body;
Described spool is arranged in described cylindrical cavity, and coaxial with described cylindrical cavity;
Described spool can only rotate in described cylindrical cavity centered by the axis of described spool.
3. electronic commutator according to claim 1, is characterized in that, the axis of described first intercommunicating pore is camber line;
And/or,
The axis of described second intercommunicating pore is camber line.
4. electronic commutator according to claim 1, is characterized in that, described first intercommunicating pore is circular hole;
And/or,
Described second intercommunicating pore is circular hole.
5. electronic commutator according to claim 1, is characterized in that, described valve body is cylindrical body.
6. electronic commutator according to claim 1, it is characterized in that, described first vent, described second vent, described 3rd vent are connected the first breathing pipe, the second breathing pipe, the 3rd breathing pipe and the 4th breathing pipe respectively with described 4th vent.
7. electronic commutator according to claim 1, is characterized in that, described first intercommunicating pore two ends are provided with elastic sealing device, for when described first intercommunicating pore is communicated with described first vent, be communicated with described second vent time sealing.
8. electronic commutator according to claim 7, is characterized in that, described elastic sealing device comprises power spring and elastic seal ring;
The two ends of described first intercommunicating pore are provided with installation step;
One end and the described installation step of described power spring offset, and the side of the other end and described elastic seal ring offsets;
The opposite side of described elastic seal ring and the inwall of described valve body offset.
9. electronic commutator according to claim 1, is characterized in that, also comprise square shaft;
Described spool is provided with square hole;
One end of described square shaft is arranged in described square hole;
The other end of described square shaft is connected with described drive motor.
10. the electronic commutator according to any one of claim 1-9, is characterized in that, described drive motor is reverse rotating motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410844643.4A CN104482272A (en) | 2014-12-30 | 2014-12-30 | Electric commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410844643.4A CN104482272A (en) | 2014-12-30 | 2014-12-30 | Electric commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104482272A true CN104482272A (en) | 2015-04-01 |
Family
ID=52756848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410844643.4A Pending CN104482272A (en) | 2014-12-30 | 2014-12-30 | Electric commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104482272A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015649A (en) * | 2016-08-03 | 2016-10-12 | 联合阀业（深圳）有限公司 | Cross valve |
| CN106321899A (en) * | 2016-08-31 | 2017-01-11 | 上海交通大学 | Double-crescent-shaped rotary four-way reversing valve |
| CN109323016A (en) * | 2018-12-10 | 2019-02-12 | 郑州云宇新能源技术有限公司 | Four-way reversing valve |
| CN109424765A (en) * | 2017-08-28 | 2019-03-05 | 浙江三花制冷集团有限公司 | A kind of rotating type change valve |
| CN109677232A (en) * | 2018-11-30 | 2019-04-26 | 黄知文 | High-speed and energy-saving automotive air conditioning device |
| CN110274033A (en) * | 2019-07-19 | 2019-09-24 | 成都富临精工电子电器科技有限公司 | A kind of fluid control device |
| CN112211867A (en) * | 2020-10-26 | 2021-01-12 | 刘舜 | Three-position four-way pneumatic reversing hydraulic valve |
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| US4526200A (en) * | 1983-10-17 | 1985-07-02 | Erkki Niskanen Oy | Blocking valve for liquids |
| CN1389689A (en) * | 2001-06-01 | 2003-01-08 | 徐云生 | Peak-regulating ground source heat pump system for accumulating energy with valley power |
| US20040140445A1 (en) * | 2003-01-16 | 2004-07-22 | Muhammad Pervaiz | Rotor valve and seal |
| CN101984277A (en) * | 2010-12-02 | 2011-03-09 | 福建高中压阀门科技有限公司 | Automatic compensation device for ball valve seal |
| CN102563123A (en) * | 2011-12-30 | 2012-07-11 | 美的集团有限公司 | Four-way valve for Carnot cycle system |
| CN202597775U (en) * | 2012-03-21 | 2012-12-12 | 宁波华成阀门有限公司 | Power-driven four-way reversing ball valve for air condition |
| CN204358210U (en) * | 2014-12-30 | 2015-05-27 | 高克伟 | Electronic commutator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4526200A (en) * | 1983-10-17 | 1985-07-02 | Erkki Niskanen Oy | Blocking valve for liquids |
| CN1389689A (en) * | 2001-06-01 | 2003-01-08 | 徐云生 | Peak-regulating ground source heat pump system for accumulating energy with valley power |
| US20040140445A1 (en) * | 2003-01-16 | 2004-07-22 | Muhammad Pervaiz | Rotor valve and seal |
| CN101984277A (en) * | 2010-12-02 | 2011-03-09 | 福建高中压阀门科技有限公司 | Automatic compensation device for ball valve seal |
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| CN202597775U (en) * | 2012-03-21 | 2012-12-12 | 宁波华成阀门有限公司 | Power-driven four-way reversing ball valve for air condition |
| CN204358210U (en) * | 2014-12-30 | 2015-05-27 | 高克伟 | Electronic commutator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015649A (en) * | 2016-08-03 | 2016-10-12 | 联合阀业（深圳）有限公司 | Cross valve |
| CN106321899A (en) * | 2016-08-31 | 2017-01-11 | 上海交通大学 | Double-crescent-shaped rotary four-way reversing valve |
| CN106321899B (en) * | 2016-08-31 | 2019-01-25 | 上海交通大学 | Bimonthly thread form rotary four-way change-over valve |
| CN109424765A (en) * | 2017-08-28 | 2019-03-05 | 浙江三花制冷集团有限公司 | A kind of rotating type change valve |
| CN109677232A (en) * | 2018-11-30 | 2019-04-26 | 黄知文 | High-speed and energy-saving automotive air conditioning device |
| CN109323016A (en) * | 2018-12-10 | 2019-02-12 | 郑州云宇新能源技术有限公司 | Four-way reversing valve |
| CN110274033A (en) * | 2019-07-19 | 2019-09-24 | 成都富临精工电子电器科技有限公司 | A kind of fluid control device |
| CN112211867A (en) * | 2020-10-26 | 2021-01-12 | 刘舜 | Three-position four-way pneumatic reversing hydraulic valve |
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Application publication date: 20150401 |