CN101469694A - Electrical controlled valve of variable displacement compressor - Google Patents
Electrical controlled valve of variable displacement compressor Download PDFInfo
- Publication number
- CN101469694A CN101469694A CNA2007101731502A CN200710173150A CN101469694A CN 101469694 A CN101469694 A CN 101469694A CN A2007101731502 A CNA2007101731502 A CN A2007101731502A CN 200710173150 A CN200710173150 A CN 200710173150A CN 101469694 A CN101469694 A CN 101469694A
- Authority
- CN
- China
- Prior art keywords
- valve
- coil
- permanent magnet
- magnet element
- electrically
- 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
Links
Images
Abstract
The present invention discloses a electrical controlled valve in discharge variable compressor, which includes a gas supply passageway, a pressure sensor and a valve rod, also includes: valve case that fixedly connects with the gas supply passageway and the pressure sensor, wherein the valve case includes a coil cavity, and the valve rod extends into the coil cavity in the valve case; a permanent magnet component that contained in the coil cavity; a coil that disposed in the coil cavity and nested inside the permanent magnet component; a offsetting spring that disposed on the top of the coil cavity and between the permanent magnet component and the valve case, and the offsetting spring generates reset force to the valve rod; a electrical source component that connects with the coil and control electrical current size to be inputted into the coil according to external signal, wherein, after the coil electrified, electromagnetic force is generated between the permanent magnet components to make the permanent magnet component perform relative movement to the coil, so as to drive the valve rod move and adjust jaw opening of the valve rod.
Description
Technical field
The present invention relates to the control technique of variable displacement compressor, more particularly, relate to the electrically-controlled valve of variable displacement compressor.
Background technique
Electrically-controlled valve is used for the control gear of variable displacement compressor more at present.Its major function is to control the discharge capacity of compressor by the pressure of inspiration(Pi) of variable compressor and external control electric current.As shown in Figure 1, this electrically-controlled valve changes the aperture of valve port by experiencing pressure of inspiration(Pi) Ps and controlling electric current, adjusts crank cavity pressure Pc thereby changed exhaust pressure Pd to the conducting degree of crank cavity pressure Pc.The pressure reduction of exhaust pressure Pd and crank cavity pressure Pc has determined that the compressor slanting plate angle is a compressor displacement.
In Fig. 1, the pressure in compressor air suction chamber is introduced in the Ps representative, and the pressure of compressor discharge chamber is introduced in the Pd representative, and the pressure in compressor crank chamber is introduced in the Pc representative.Electrically-controlled valve is used to adjust the crank cavity pressure Pc of compressor.Realize being communicated with by air supply channel between compressor air suction chamber and the compressor crank chamber, the switch of this air supply channel is controlled by control valve.This control valve comprises valve rod 5, pressure sensitive assembly 4, coil 1, moving iron core 2 and static iron core 8.Pressure sensitive assembly 4 comes mobile valve rod 5 by induction pressure of inspiration(Pi) Ps, thereby the circulation area that changes valve port 7 by the position that changes valve body is to change the flow of Pd to Pc, and the flow of Pd to Pc changes the variation in pressure that causes Pc.
In electrically-controlled valve, coil 1 generates induction field to static iron core 8 and moving iron core 2 magnetization by the control electric current, thereby produce electromagnetic force between static iron core 8 and the moving iron core 2, because static iron core 8 is fastened in the valve, therefore moving iron core 2 is subjected to electromagnetic force and drives the interior pulling valve rod 5 of valve.Moving iron core 2 can be free to slide in valve body.Answering spring 6 on the valve rod 5 once is fixed between the dynamic and static iron core.Pressure of inspiration(Pi) Ps pressure guiding channel is to pressure sensitive assembly 4, be that a bellows applies a power herein, electromagnetic force on this power and the moving iron core 2 is formed makes a concerted effort to spur valve rod 5, changes the conducting degree between the exhaust pressure Pd and cavity pressure Pc in the electrically-controlled valve thus.Electromagnetic force is corresponding with the size of current on supplying to coil 1, and this electric current has determined the desired value of suction pressure.When magnitude of current reduced, it is big that the aperture of electrically-controlled valve becomes.When not having electric current supply to coil 1, the aperture of valve will be set in a maximum value.During the elastic force balance of the returning spring 6 in the power that is subjected on the pressure sensitive assembly 4, electromagnetic force and the electrically-controlled valve rear case 3, can determine the conducting degree of exhaust pressure Pd and pressure of inspiration(Pi) Pc, thereby can change crank cavity pressure Pc thus reaches desired value and can adjust the swash plate angle of compressor, changed piston stroke, made the discharge capacity of compressor controlled.
Because coil is made by a large amount of copper cash, cost is higher and winding volume is bigger, therefore is badly in need of a kind of electrically-controlled valve that copper cash is less and volume is less of using.
Summary of the invention
The present invention aims to provide a kind of use that can save copper cash, and reduces the electrically-controlled valve of volume.
According to the present invention, a kind of electrically-controlled valve of variable displacement compressor is provided, comprise air feed path, pressure sensing device and valve rod, also comprise:
Valve casing is fixedlyed connected with air feed path and pressure sensing device, and valve casing comprises coil bore, and valve rod extends into the coil bore in the valve casing;
Permanent magnet element is contained in the coil bore;
Coil is contained in coil bore and is nested in the permanent magnet element;
Returnning spring places the top of coil bore, and between permanent magnet element and the valve casing, Returnning spring produces reposition force to valve rod;
Power supply unit, connecting coil, and according to the size of current of external signal control input coil;
Wherein, behind the coil electricity, and produce electromagnetic force between the permanent magnet element, make permanent magnet element and coil produce relative movement, move, adjust the aperture of valve port thereby drive valve rod.
According to an embodiment, coil stationary is in the valve casing bottom, and permanent magnet element and coil bore relatively move; Valve rod is fixed on the top of permanent magnet element and moves with permanent magnet element; Returnning spring produces downward reposition force to permanent magnet element.
According to another embodiment, permanent magnet element is fixed on the valve casing, and coil and coil bore relatively move; Valve rod is fixed on the coil and moves with coil; Returnning spring is to coil or directly valve rod is produced downward reposition force.
This permanent magnet element is cylindrical and intermediate hollow, comprising: permanent magnet is hollow cylinder; And magnetic conductive part, extend with the last end in contact of permanent magnet and to the center of hollow cylinder.
This permanent magnet is by axial magnetized, and the upper half is magnetized into the N utmost point, and following half is magnetized into the S utmost point; The last end in contact of magnetic conductive part and permanent magnet also is magnetized into the N utmost point; Form the Magnetic field distribution radially of annular at the following half of magnetic conductive part and permanent magnet.This magnetized direction also can be reverse.
According to a kind of implementation, coil embeds the die sleeve that non-magnet_conductible material is made, and leaves the gap between this die sleeve and the permanent magnet element, and the described relatively die sleeve of permanent magnet element endwisely slips.Perhaps, the die sleeve parcel that permanent magnet element is made by non-magnet_conductible material, slide relative between the die sleeve of this die sleeve and coil.
According to an embodiment, this air feed path comprises:
Valve pocket;
Communication passage extends upward from valve pocket;
First valve port radially extends from valve pocket, and the downstream part that makes up air supply channel is communicated with valve pocket with the foundation of crank cavity pressure district;
Second valve port radially extends from communication passage, and the upstream portion that makes up air supply channel connects communication passage and air condition compressor exhaust pressure district.
This pressure sensing device comprises:
Pressure sensing chamber is connected with air aspiration cavity pressure area in the air condition compressor by the opening on the sidewall;
Pressure sensing spare is positioned at pressure sensing chamber, and the variation of experiencing pressure of inspiration(Pi) produces resiliently deformable, produces thrust;
The pressure drive link is connected between pressure sensing spare and the valve rod, and the reasoning that pressure sensing spare produces is passed on the valve rod.
According to an embodiment, the valve port position of valve pocket comprises a valve body; One step is set between valve pocket and the communication passage, plays the effect of valve seat.
The present invention has mainly used permanent magnet to substitute moving iron core and the secured core in the former electrically-controlled valve commonly used and has adjusted the size of the position of coil in electrically-controlled valve.Permanent magnet is by making up with magnetic conductive part, form the permanent magnet element in fixed magnetic field loop, make the current direction of hot-wire coil vertical mutually with the magnetic direction that permanent magnet element forms, permanent magnet element substitutes the effect of moving the suffered electromagnetic force of iron core in the electrically-controlled valve commonly used to the reaction force of the electromagnetic force of coil, permanent magnet element itself promotes valve rod as movement parts, because the intrinsic the action of a magnetic field of permanent magnet element, make control valve work more linear, coil winding reduces volume, reduced use, thereby reduced cost for copper cash.Simultaneously, because the change in location of coil in electrically-controlled valve among the present invention dwindled the volume of electrically-controlled valve.
Description of drawings
The above and other features of the present invention, character and advantage will become more obvious by the description below in conjunction with drawings and Examples, in the accompanying drawings, identical reference character is represented identical feature all the time, wherein:
Fig. 1 shows the sectional view of the electrically-controlled valve of using in the prior art;
Fig. 2 shows the sectional view of electrically-controlled valve of the present invention;
Fig. 3 shows the fundamental diagram of permanent magnet element in the electrically-controlled valve of the present invention.
Embodiment
With reference to shown in Figure 2, Fig. 2 is the sectional view of electrically-controlled valve of the present invention.This electrically-controlled valve comprises: by the air supply channel 16 that valve pocket 12, first valve port 13, second valve port 14, communication passage 17 constitute, this air supply channel 16 has been communicated with air condition compressor exhaust pressure district Pd, crank cavity pressure district Pc and valve pocket 12.Wherein, first valve port 13 radially extends from valve pocket 12, and the downstream part that makes up air supply channel 16 is communicated with valve pocket 12 with crank cavity pressure district Pc foundation.Second valve port 14 radially extends from communication passage 17, and the upstream portion that makes up air supply channel 16 connects communication passage 17 with air condition compressor exhaust pressure district Pd.Thus, first valve port 13, valve pocket 12, communication passage 17 and second valve port, 14 constructed air supply channels 16 couple together exhaust cavity in the air condition compressor and crank chamber.Change according to crank cavity pressure Pc, this crank cavity pressure Pc makes the tilt angle varied of the swash plate in the air condition compressor.This will change the stroke and the compressor displacement of each piston.The structure and the prior art of air supply channel are similar.
Pressure sensing spare 15 is that a bellows is positioned at pressure sensing chamber 19 in the present embodiment, and pressure sensing chamber 19 is connected with air aspiration cavity pressure area Ps in the air condition compressor by the opening 19a on pressure sensing chamber 19 sidewalls.Make bellows 15 produce resiliently deformable by the variation of experiencing pressure of inspiration(Pi) Ps, thereby make 15 pairs of valve rods of bellows 110 produce thrust.The lower end of pressure drive link 111 is pressed on the upper end of valve rod 110 by the power of bellows 15 and spring 112.Pressure drive link 111 and valve rod 110 are done mass motion.Structure herein is same and prior art is similar.Need to prove that valve body 18 can be combined into one with valve rod 110, therefore, pressure drive link 111, valve rod 110 and valve body 18 are to do mass motion together.Above-mentioned pressure sensing spare 15, pressure sensing chamber 19, pressure drive link 111, spring 112 have constituted pressure sensing device.
Main improvement of the present invention is to use permanent magnet and small coil to replace the large-scale coil of original use, thereby the use of saving copper cash is to reduce cost and to dwindle the volume of electrically-controlled valve.
Continuation comprises a coil bore 114 with reference to figure 2 in the valve casing 116, permanent magnet element 11 and coil 113 are contained in the coil bore 114.Coil 113 is nested in the permanent magnet element 11, and is positioned over the bottom of coil bore 114 jointly.After coil 113 energising, its with permanent magnet element 11 between produce electromagnetic force, move up and down in promotion permanent magnet element 11 coil bore 114.Thereby driving the valve rod 110 that is fixed on permanent magnet element 11 tops moves together.Returnning spring 115 places the top of coil bore 114, is arranged between permanent magnet element 11 and the valve casing 116, and Returnning spring 115 promotes permanent magnet element 111 downwards.The upper end of valve casing 116 connects each parts in above-mentioned air supply channel 16 and the pressure sensing chamber 19, and valve rod 110 extends into the inside of valve casing 116 and fixedlys connected with permanent magnet element 11.
In coil bore 114, coil 113 is arranged in the bottom of valve casing 116 and is nested in permanent magnet element 11, and this coil 113 is connected with power supply unit 117.The size of current of power supply unit control power input line circle 113 after receiving as the external signals such as keying state, passenger accommodation temperature or target temperature of air-conditioning.Electromagnetic force size between coil 113 and the permanent magnet element 11 depends on current value, and the size of electromagnetic force has determined the relatively move position of coil 113 with permanent magnet element 11.Thereby also just determined the position of valve rod 110, because the aperture of control valve by the position of valve rod, therefore just can reach the purpose of adjusting the valve rod aperture by adjusting electric current, thereby change the air condition compressor discharge capacity.
With reference to figure 3, Fig. 3 describes electromagnetic force between permanent magnet element 11 and the coil 113 in detail.
In sum, the present invention mainly promotes the electrically-controlled valve valve rod by the electromagnetic force between permanent magnet element and the electrified wire, thus control electrically-controlled valve valve body aperture.
As a kind of variation example, also permanent magnet element 11 can be fixed on the valve casing 116.Make coil 113 to move up and down, the corresponding change be, valve rod 110 need fix with coil 113, and valve rod 110 need pass permanent magnet element 11 and extend into the inside of permanent magnet element 11.Simultaneously, the downward active force of Returnning spring 115 also needs to affact on the coil 113, or directly affacts on the valve rod 110.Thus, make coil 113 axial motions promote valve rod 110, to change crank cavity pressure Pc.Variation by crank cavity pressure Pc changes change discharge capacity air condition compressor swash plate angle, finally reaches the purpose of control compressor displacement.
The present invention has mainly used permanent magnet to substitute moving iron core and the secured core in the former electrically-controlled valve commonly used and has adjusted the size of the position of coil in electrically-controlled valve.Permanent magnet is by making up with magnetic conductive part, form the permanent magnet element in fixed magnetic field loop, make the current direction of hot-wire coil vertical mutually with the magnetic direction that permanent magnet element forms, permanent magnet element substitutes the effect of moving the suffered electromagnetic force of iron core in the electrically-controlled valve commonly used to the reaction force of the electromagnetic force of coil, permanent magnet element itself promotes valve rod as movement parts, because the intrinsic the action of a magnetic field of permanent magnet element, make control valve work more linear, coil winding reduces volume, reduced use, thereby reduced cost for copper cash.Simultaneously, because the change in location of coil in electrically-controlled valve among the present invention dwindled the volume of electrically-controlled valve.
The foregoing description provides to being familiar with the person in the art and realizes or use of the present invention; those skilled in the art can be under the situation that does not break away from invention thought of the present invention; the foregoing description is made various modifications or variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (10)
1. the electrically-controlled valve of a variable displacement compressor comprises air feed path, pressure sensing device and valve rod, it is characterized in that, also comprises:
Valve casing is fixedlyed connected with described air feed path and pressure sensing device, and described valve casing comprises coil bore, and described valve rod extends into the coil bore in the valve casing;
Permanent magnet element is contained in the coil bore;
Coil is contained in coil bore and is nested in the permanent magnet element;
Returnning spring places the top of coil bore, and between permanent magnet element and the valve casing, described Returnning spring produces reposition force to valve rod;
Power supply unit connects described coil, and controls the size of current of input coil according to external signal;
Wherein, behind the described coil electricity, and produce electromagnetic force between the permanent magnet element, make permanent magnet element and coil produce relative movement, move, adjust the aperture of valve port thereby drive valve rod.
2. the electrically-controlled valve of variable displacement compressor as claimed in claim 1 is characterized in that,
Described coil stationary is in the valve casing bottom, and described permanent magnet element and coil bore relatively move;
Described valve rod is fixed on the top of permanent magnet element and moves with permanent magnet element;
Described Returnning spring produces downward reposition force to permanent magnet element.
3. the electrically-controlled valve of variable displacement compressor as claimed in claim 1 is characterized in that,
Described permanent magnet element is fixed on the valve casing, and described coil and coil bore relatively move;
Described valve rod is fixed on the coil and moves with coil;
Described Returnning spring is to coil or directly valve rod is produced downward reposition force.
4. as the electrically-controlled valve of claim 2 or 3 described variable displacement compressors, it is characterized in that described permanent magnet element is cylindrical and intermediate hollow, comprising:
Permanent magnet is hollow cylinder;
Magnetic conductive part extends with the last end in contact of described permanent magnet and to the center of hollow cylinder.
5. the electrically-controlled valve of variable displacement compressor as claimed in claim 4 is characterized in that,
Described permanent magnet is by axial magnetized, and the upper half is magnetized into the N utmost point, and following half is magnetized into the S utmost point;
The last end in contact of described magnetic conductive part and permanent magnet also is magnetized into the N utmost point;
Form the Magnetic field distribution radially of annular at the following half of magnetic conductive part and permanent magnet.
6. the electrically-controlled valve of variable displacement compressor as claimed in claim 4 is characterized in that,
Coil embeds the die sleeve that non-magnet_conductible material is made, and leaves the gap between this die sleeve and the permanent magnet element, and the described relatively die sleeve of permanent magnet element endwisely slips.
7. the electrically-controlled valve of variable displacement compressor as claimed in claim 6 is characterized in that,
The die sleeve parcel that permanent magnet element is made by non-magnet_conductible material, slide relative between the die sleeve of this die sleeve and coil.
8. the electrically-controlled valve of variable displacement compressor as claimed in claim 1 is characterized in that, described air feed path comprises:
Valve pocket;
Communication passage extends upward from valve pocket;
First valve port radially extends from valve pocket, and the downstream part that makes up air supply channel is communicated with valve pocket with the foundation of crank cavity pressure district;
Second valve port radially extends from communication passage, and the upstream portion that makes up air supply channel connects communication passage and air condition compressor exhaust pressure district.
9. the electrically-controlled valve of variable displacement compressor as claimed in claim 1 is characterized in that, described pressure sensing device comprises:
Pressure sensing chamber is connected with air aspiration cavity pressure area in the air condition compressor by the opening on the sidewall;
Pressure sensing spare is positioned at pressure sensing chamber, and the variation of experiencing pressure of inspiration(Pi) produces resiliently deformable, produces thrust;
The pressure drive link is connected between pressure sensing spare and the valve rod, and the reasoning that pressure sensing spare produces is passed on the valve rod.
10. the electrically-controlled valve of variable displacement compressor as claimed in claim 1 is characterized in that,
The valve port position of valve pocket comprises a valve body;
One step is set between valve pocket and the communication passage, plays the effect of valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101731502A CN101469694A (en) | 2007-12-26 | 2007-12-26 | Electrical controlled valve of variable displacement compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101731502A CN101469694A (en) | 2007-12-26 | 2007-12-26 | Electrical controlled valve of variable displacement compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101469694A true CN101469694A (en) | 2009-07-01 |
Family
ID=40827440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101731502A Pending CN101469694A (en) | 2007-12-26 | 2007-12-26 | Electrical controlled valve of variable displacement compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101469694A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163483A (en) * | 2010-12-31 | 2011-08-24 | 东莞市高能磁电技术有限公司 | Multi-point control method and device for electromagnetic device |
| CN103016327A (en) * | 2011-09-28 | 2013-04-03 | 上海三电贝洱汽车空调有限公司 | Electric control valve |
| CN107191661A (en) * | 2017-06-27 | 2017-09-22 | 成都国光电气股份有限公司 | Stop valve |
| CN109442068A (en) * | 2018-12-29 | 2019-03-08 | 绵阳富临精工机械股份有限公司 | A kind of automatically controlled valve arrangement with exhaust passage |
| CN110219789A (en) * | 2019-05-28 | 2019-09-10 | 龙工（上海）精工液压有限公司 | A kind of hydraulic pump power shear mechanism |
| CN112513460A (en) * | 2018-08-08 | 2021-03-16 | 伊格尔工业股份有限公司 | Capacity control valve |
| CN113153866A (en) * | 2021-04-27 | 2021-07-23 | 哈尔滨工程大学 | Driving system for underwater ice breaking of high-speed revolving body |
| CN109442068B (en) * | 2018-12-29 | 2024-04-26 | 绵阳富临精工机械股份有限公司 | Electric control valve structure with exhaust channel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2300778Y (en) * | 1997-01-24 | 1998-12-16 | 于恩海 | Direct driving type electromagnetic permanent-magnet water valve |
| JP2002070731A (en) * | 2000-09-01 | 2002-03-08 | Zexel Valeo Climate Control Corp | Variable displacement controller for refrigeration cycle |
| CN1364983A (en) * | 2001-01-12 | 2002-08-21 | 株式会社丰田自动织机 | Control valve for variable compressor |
| US20050025632A1 (en) * | 2003-07-28 | 2005-02-03 | Urbank Thomas Martin | Integrated control valve for a variable capacity compressor |
| CN1594884A (en) * | 2003-08-22 | 2005-03-16 | 伊格尔工业股份有限公司 | Capacity control drive |
| CN1804394A (en) * | 2005-01-12 | 2006-07-19 | 株式会社Tgk | Control valve for variable displacement compressor |
-
2007
- 2007-12-26 CN CNA2007101731502A patent/CN101469694A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2300778Y (en) * | 1997-01-24 | 1998-12-16 | 于恩海 | Direct driving type electromagnetic permanent-magnet water valve |
| JP2002070731A (en) * | 2000-09-01 | 2002-03-08 | Zexel Valeo Climate Control Corp | Variable displacement controller for refrigeration cycle |
| CN1364983A (en) * | 2001-01-12 | 2002-08-21 | 株式会社丰田自动织机 | Control valve for variable compressor |
| US20050025632A1 (en) * | 2003-07-28 | 2005-02-03 | Urbank Thomas Martin | Integrated control valve for a variable capacity compressor |
| CN1594884A (en) * | 2003-08-22 | 2005-03-16 | 伊格尔工业股份有限公司 | Capacity control drive |
| CN1804394A (en) * | 2005-01-12 | 2006-07-19 | 株式会社Tgk | Control valve for variable displacement compressor |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163483B (en) * | 2010-12-31 | 2015-08-19 | 广东高鑫科技股份有限公司 | A kind of method of calutron multiparty control and device |
| CN102163483A (en) * | 2010-12-31 | 2011-08-24 | 东莞市高能磁电技术有限公司 | Multi-point control method and device for electromagnetic device |
| CN103016327A (en) * | 2011-09-28 | 2013-04-03 | 上海三电贝洱汽车空调有限公司 | Electric control valve |
| CN103016327B (en) * | 2011-09-28 | 2016-03-16 | 上海三电贝洱汽车空调有限公司 | Electrically-controlled valve |
| CN107191661B (en) * | 2017-06-27 | 2023-03-14 | 成都国光电气股份有限公司 | Stop valve |
| CN107191661A (en) * | 2017-06-27 | 2017-09-22 | 成都国光电气股份有限公司 | Stop valve |
| CN112513460A (en) * | 2018-08-08 | 2021-03-16 | 伊格尔工业股份有限公司 | Capacity control valve |
| CN109442068A (en) * | 2018-12-29 | 2019-03-08 | 绵阳富临精工机械股份有限公司 | A kind of automatically controlled valve arrangement with exhaust passage |
| CN109442068B (en) * | 2018-12-29 | 2024-04-26 | 绵阳富临精工机械股份有限公司 | Electric control valve structure with exhaust channel |
| CN110219789A (en) * | 2019-05-28 | 2019-09-10 | 龙工（上海）精工液压有限公司 | A kind of hydraulic pump power shear mechanism |
| CN110219789B (en) * | 2019-05-28 | 2023-06-20 | 龙工（上海）精工液压有限公司 | Hydraulic pump power shear mechanism |
| CN113153866B (en) * | 2021-04-27 | 2022-07-12 | 哈尔滨工程大学 | Driving system for underwater ice breaking of high-speed revolving body |
| CN113153866A (en) * | 2021-04-27 | 2021-07-23 | 哈尔滨工程大学 | Driving system for underwater ice breaking of high-speed revolving body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101469694A (en) | Electrical controlled valve of variable displacement compressor | |
| CN100378329C (en) | Control valve for variable displacement compressor | |
| CN101410923B (en) | Electromagnetic actuator | |
| CN101559602B (en) | Adsorption device | |
| CN101055040A (en) | Electric-powered air release valve and blood pressure gauge | |
| CN100570185C (en) | The continuously adjustable solenoid valve of valve core movement | |
| CN103998814A (en) | Shock absorber system and method | |
| EP1236899A3 (en) | Control valve for variable displacement compressor using electromagnetic actuator | |
| CN110430301B (en) | Terminal device | |
| CN1804394A (en) | Control valve for variable displacement compressor | |
| CN100402847C (en) | Control valve for positive displacement engine | |
| EP2000720B1 (en) | Control valve and variable displacement compressor using the control valve | |
| WO2008156405A1 (en) | Electromechanical valve | |
| CN101469696A (en) | Electrical controlled valve of variable displacement compressor | |
| EP0508781B1 (en) | Proportional solenoid actuator and pump system including same | |
| CN102124223A (en) | Reciprocating compressor | |
| US6626150B2 (en) | Electronically controlled continuous fuel pressure regulator | |
| CN201318268Y (en) | Electric control valve for compressor | |
| CN209213077U (en) | A kind of motor-driven valve | |
| CN209581239U (en) | A kind of control section and the integrated waist support control system of air pump | |
| CN101614201A (en) | Control valve for variable volume type compressor | |
| CN114334513A (en) | Mechanical keyboard's button structure and mechanical keyboard | |
| CN201717192U (en) | Plunger type water flow switch | |
| JP4474078B2 (en) | High speed solenoid valve | |
| CN204284605U (en) | A kind of magnetic damping list microswitch type pressure signal device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090701 |