CN201284871Y - Pilot type solenoid valve - Google Patents
Pilot type solenoid valve Download PDFInfo
- Publication number
- CN201284871Y CN201284871Y CNU2008201301769U CN200820130176U CN201284871Y CN 201284871 Y CN201284871 Y CN 201284871Y CN U2008201301769 U CNU2008201301769 U CN U2008201301769U CN 200820130176 U CN200820130176 U CN 200820130176U CN 201284871 Y CN201284871 Y CN 201284871Y
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- main valve
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Abstract
The utility model relates to a pilot-operated type electromagnetic valve which belongs to a fluid control part. The prior art has the problems that the materials of an end cover have high consumption and high cost; processing efficiency of a piston is low, but the processing cost is high; and the intensity can be reduced through stress concentration easily formed by the end cover or the piston. The utility model provides the pilot-operated type electromagnetic valve with a novel structure, which has the advantages of material saving and processing efficiency improvement. A contact surface of the piston adopts a stepped structure, or the stepped structure is arranged at the end of a holding cavity of a main valve, the piston can not be clamped even if the contact surface of the piston deforms, and thus, the operation reliability of the electromagnetic valve is ensured. Compared with the prior art, the utility model greatly reduces the material consumption of the end cover, simplifies the processing technology of the piston, reduces the cost, greatly improves the reliability of the electromagnetic valve, and conforms to the development trend of the conservation-oriented society.
Description
Technical field
The utility model relates to the control valve for fluids field, particularly a kind of solenoid valve that is used for Heating,Ventilating and Air Conditioning (HVAC), refrigeration dispatch control system, a kind of bigbore guide electromagnetic valve of more specifically saying so.
Background technique
Often can use solenoid valve in the system that Heating,Ventilating and Air Conditioning (HVAC), refrigeration etc. relate to temperature control, regulate; its cardinal principle is to utilize the electromagnetic force that produces behind the coil electricity to control moving up and down of core iron; make solenoid valve in air-conditioning system, open or close, thus the break-make of pilot line system medium.
And along with the progressively increase of individual living space, and the increasing of building such as megastore, the demand of jumbo air-conditioning unit also increases gradually, and in such large capacity conditioner unit, also requiring for solenoid valve is big capacity, heavy caliber.Common direct action solenoid valve is because the restriction in valve port footpath can not be satisfied such working environment, and bigbore guide electromagnetic valve then can satisfy this demand.
The claimant on January 25th, 2006 disclosed CN2753926Y patent disclosure a kind of heavy caliber guide electromagnetic valve, please refer to Fig. 1, it comprises coil 1 and the main valve 7 that is connected in sleeve pipe two ends about in the of 3, sleeve pipe 3 is built-in with end socket 2, has two valve ports on the main valve 7: pilot valve mouth 8 and the primary valve 14 that communicates with it.The top of pilot valve mouth 8 forms a pilot valve cavity 16 that is surrounded by sleeve pipe 3, end socket 2, spring 5 and core iron 4, and steel ball 6 is arranged on the core iron 4.Primary valve 14 next doors form main valve cavity 13, in this main valve cavity 13 piston 10 is arranged, piston 10 cooperates with the end cap 11 that is fixed on the main valve end, 11 of piston 10 and end caps have Returnning spring 12, the axis of piston 10 and core iron 4 is vertical mutually, the sealing plug 9 that has macromolecular material to make on the piston 10, the sealing plug surface that is positioned at primary valve one side is the plane, main valve cavity 13 and pilot valve cavity 16 communicate by through hole 15.Piston 10 inside do not have boss, and end cap 11 is provided with boss and (discloses in other two kinds of mode of executions: also can be provided with boss in piston 10 inside, and boss is not set on end cap 11; Perhaps on piston 10 inside and end cap 11, boss is set all.)
In above-mentioned electromagnetic valve structure, for fear of the end face of piston 10 and the direct bump of end cap 11, prevent the distortion of piston 10 external diameters, boss is set, make between the two axial distance less than the guide section afterbody of piston 10 and the axial distance between the end cap 11 in the inside of end cap 11 or piston 10.But such structure will certainly be brought the rolling up of material consumption of end cap 11, makes cost up; Piston 10 inside are provided with the structure of boss simultaneously, need wanting to process very circlet shape space of an internal diameter in the middle of the piston, and processing difficulties, efficient is low, and the processing cost height; End cap is " protruding " font in the prior art, and the thickness rapid change of intermediate portion forms stress easily and concentrates, and can cause the reduction of intensity.
The model utility content
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the waste of cap material in the prior art, form that stress is concentrated easily and the defective that causes intensity to reduce provides a kind of guide electromagnetic valve of saving material, improving the new piston structure of work efficiency.For this reason, the utility model is by the following technical solutions:
Guide electromagnetic valve comprises the main valve that is provided with outlet, import, the pilot-actuated valve parts of fixedlying connected with described main valve; Described main valve further has receiving cavity, the described receiving cavity of end cap shutoff, thus form the main valve cavity; Form the pilot valve cavity between described main valve and the described institute pilot-actuated valve parts; Described main valve inside offers through hole, and pilot valve cavity and main valve cavity are communicated with.Be provided with in the described main valve cavity by to-and-fro motion control outlet and open or closed piston;
It is characterized in that, be provided with annular space between the inwall of the tail end of described piston and described receiving cavity end.
Preferably, the annular width of described annular space is 0.5-1mm, highly is 1-3mm.
Preferably, described annular space is that the outside diameter of the tail end of piston forms step-like structure less than the outside diameter of body guide section, thus the annular space that in the main valve cavity, forms.
Alternatively, described annular space is that the end of described main valve receiving cavity is along the annular space that forms between the tail end of ring-shaped step that circumferentially is provided with and described piston.
Preferably, the tail end bottom centre of described piston inwardly offers piston cavity vertically, makes the bottom surface of piston tail end form the surface of contact of annular, and described surface of contact is conflicted with the end face of described end cap when solenoid valve is worked or separated; The area of the end face of described end cap is greater than the area of described surface of contact.
Preferably, described pilot-actuated valve parts comprise sleeve pipe, be located at the coil of described jacket exterior, be located at core iron, the end socket in the described sleeve pipe and be located at Returnning spring between described core iron and the end socket, and the end of described core iron further is provided with sealed department.
Preferably, described sealed department is a steel ball.
Preferably, described pilot-actuated valve parts and main valve are fixing by interference fit and welding, are provided with the pilot valve mouth between the two so that both are communicated with; Described sealed department is controlled the switching of described pilot valve mouth under the difference force effect.
Preferably, the described main valve structure that is formed in one.
Preferably, described piston comprises tail end, body guide section and closed end, offers the closed end equalizing orifice on the described closed end, and described tail end offers the tail end equalizing orifice.
The beneficial effects of the utility model are:
1, by improving structure of piston, the surface of contact of piston adopts ledge structure, has guaranteed enough big area of contact, thereby guarantees solenoid valve after the long-time use of process, and the piston surface of contact is indeformable, and piston is not stuck.The distortion of piston surface of contact between the cylindrical of surface of contact and piston, is reserved with the annulus that width is 0.5-1mm, even also can not cause seizure of piston, thereby guarantee the reliable in action of solenoid valve;
2, compared with prior art, can be in the material consumption that significantly reduces end cap or piston, the end cap of having eliminated prior art forms the defective that stress is concentrated easily because of intermediate portion thickness rapid change;
3, compared with prior art, can simplify the processing technology of piston, alleviate the weight of piston, when reducing cost, significantly improve the reliability of solenoid valve, meet the development trend of economized society.
Description of drawings
Fig. 1 is the guide electromagnetic valve structural representation of prior art;
Fig. 2 is the guide electromagnetic valve structural representation of the utility model first mode of execution;
Fig. 3 is the piston structure schematic representation of the utility model first mode of execution;
Fig. 4 is the guide electromagnetic valve structural representation of the utility model second mode of execution;
Fig. 5 is the utility model second mode of execution piston structure schematic representation.
Among the figure:
The 1-coil; The 2-end socket; The 3-sleeve pipe; The 4-core iron; The 5-spring; The 6-sealed department; The 7-main valve; 8-pilot valve mouth; The 9-sealing plug;
The 10-piston; The 101-surface of contact; 102-tail end equalizing orifice; The 103-guide surface; 104-body guide section; The 105-closed end; The 106-tail end; The 107-piston cavity; 108-closed end equalizing orifice;
The 11-end cap; The 12-Returnning spring; 13-main valve cavity; The 14-primary valve; The 15-through hole; 16-pilot valve cavity; The 17/20-annular space; 18-pilot-actuated valve parts; The 19-outlet;
D-body guide section external diameter; D1-closed end external diameter; D2-tail end external diameter.
Embodiment
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with drawings and embodiments.
For ease of explanation the utility model difference with the prior art, make those skilled in the art can understand the technical solution of the utility model better, adopt same numbering for the parts that have identical function or effect in the utility model and the prior art.
Guide electromagnetic valve comprises main valve that is provided with pilot valve mouth, import, outlet and the pilot-actuated valve parts two large divisions of fixedlying connected with described main valve.
The basic principle of pilot-actuated valve parts is to control the back and forth movement of core iron by the electromagnetic force that electromagnetic coil produces, and the switching that comes the control access by the sealed member of core iron end.
For sake of convenience, and because the structure of pilot-actuated valve parts does not have substantial influence to the technical solution of the utility model, so the utility model adopts pilot-actuated valve parts same as the prior art to describe.
Pilot-actuated valve parts 18 comprise sleeve pipe 3 cylindraceous, by screw in the coil 1 of described sleeve pipe 3 outsides, be located at core iron 4, the end socket 2 in the described sleeve pipe and be located at core iron 4 and end socket 2 between Returnning spring 5; End socket 2 is fixed on the upper end portion of sleeve pipe 3, and screw is on end socket 2.
The end of core iron 4 further is provided with sealed department 6, and sealed department 6 is preferably steel ball in the present embodiment, apparently, also can be spherical, the hemispherical or taper sealed department that other material is made.
First mode of execution
With reference to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of first mode of execution of guide electromagnetic valve provided by the utility model, and Fig. 3 is the piston structure schematic representation of the utility model first mode of execution.
Apparently, main valve 7 also can adopt split-type structural fully, and each parts are fixedly connected by modes such as welding, and pilot valve mouth 8, import 19, outlet 14 are set on main valve 7, can reach the purpose of this utility model equally.
The inside of main valve 7 has the receiving cavity that is round barrel shape, piston 10 places in the receiving cavity, piston 10 is the round barrel shape of hollow, comprise piston main body guide section 104, closed end 105 and tail end 106, the guide surface 103 of main body guide section 104 forms Spielpassung with the receiving cavity of main valve 7 inside, thereby main body guide section 104 can be come and gone in receiving cavity to be moved, when guide electromagnetic valve was worked, medium can enter internal piston by the guide surface 103 of main body guide section 104 and the gap between the main valve receiving cavity.
The outside diameter d 1 of closed end 105 is slightly less than the outer diameter D of body guide section 104, thereby forms step at both adjacents.
The outside diameter d 2 of tail end 106 is slightly less than the outer diameter D of body guide section 104, both stand outs (D-d2)/2 are 0.5-1mm, in the time of in the receiving cavity in piston 10 is placed on main valve 7, the outside diameter of the tail end 106 of piston 10 forms annular space 17 less than the outside diameter of piston 10 body guide sections 104 thereby make between tail end 106 and the main valve receiving cavity inwall.
Piston 10 is a hollow structure, and 106 bottom centre are processed with piston cavity 107 to internal piston vertically from tail end, so tail end 106 bottom surfaces of piston 10 form the surface of contact 101 of annular.When solenoid valve is worked, conflict between surface of contact 101 and the end cap 11 or separate.When the annulus area of surface of contact 101 is enough big (size of annulus area can be provided with by the internal diameter of adjusting piston cavity 107), solenoid valve is through opening and closing for a long time, and the deformation ratio of surface of contact 101 is less.And because the existence of annular space 17, even 101 certain deformation is arranged, piston still can move neatly, can significantly improve the reliability of solenoid valve.
The stepped part of tail end 106 offers tail end equalizing orifice 102, and its diameter is set to 2-4mm, and its effect is the pressure of medium in the equalizing piston chamber 107.In piston 10 course of action, make the quick balance of the pressure and the outside in the piston cavity 107, make piston 10 flexible movements.
The head of closed end 105 is provided with sealing plug 9, and sealing plug 9 is made with the PTFE material usually, directly cooperates with outlet 14 to realize opening or closing outlet 14.
Closed end 105 offers closed end equalizing orifice 108 near body guide section 104 places, makes the outside conducting of piston cavity 107 and piston, and the internal diameter of closed end equalizing orifice 108 is set to 0.5-1.5mm, and medium can be flowed by closed end equalizing orifice 108.
Be connected with end cap 11 on the end face of main valve 7 receiving cavities, the contacting part of end cap 11 inner side surfaces and piston 10 is plane structure, and end cap 11 and main valve 7 can adopt the mode fixing seal that welds again after the crimping, have so just formed main valve cavity 13 in the inside of main valve 7; Be provided with Returnning spring 12 between end cap 11 and the piston cavity 107, after the solenoid valve outage, under the effect of spring force, piston moved to right-hand member, will export 14 sealings.
The face area of end cap 11 is greater than the area of surface of contact 101.
Second mode of execution
With reference to Fig. 4 and Fig. 5, Fig. 4 is the structural representation of second mode of execution of guide electromagnetic valve provided by the utility model, and Fig. 5 is the piston structure schematic representation of the utility model second mode of execution.
Different with first mode of execution is that the outside diameter d 2 of tail end 106 equates that with the outer diameter D of body guide section 104 promptly tail end 106 is equivalent to the isometrical extension of body guide section 104, as shown in Figure 5.
Piston 10 is a hollow structure, be processed with piston cavity 107 from tail end 106 to internal piston, therefore the surface of contact 101 of piston 10 is ring, when the annulus area of surface of contact 101 is enough big (size of annulus area can be provided with by the internal diameter of piston cavity 107), solenoid valve is through opening and closing for a long time, and the deformation ratio of surface of contact 101 is less.
The difference of the structure of main valve 7 and first mode of execution is, the end of the receiving cavity of main valve 7 is along circumferentially being provided with ring-shaped step, form annular space 20 between the tail end 106 of ring-shaped step and piston, even like this surface of contact 101 of piston 10 with end cap 11 striking process generation certain deformation, but because the existence of annular space 20, when making the tail end 106 of piston 10 deform, can give certain buffer space, piston 10 still can be moved neatly, thereby can significantly improve the reliability of solenoid valve.
The remaining part structure of main valve 7 and piston 10 is identical with first mode of execution, does not give unnecessary details one by one at this.
The working procedure of guide electromagnetic valve is described below in two kinds of mode of executions:
When coil 1 outage, at this moment, under the effect of spring 5, core iron 4 drives sealed department 6 and moves down, with 8 sealings of pilot valve mouth.High-pressure medium enters import 19, the piston cavity 107 that enters piston 10 inside by the gap between closed end equalizing orifice 108 and piston 10 and the main valve receiving cavity, and enter pilot valve inner chamber 16 by through hole 15; And be high-pressure medium from import 19 to piston cavity 107, in the through hole 15, pilot valve cavity 13 this moment, so be in pressure balance inside and outside the piston, under the effect of Returnning spring 12, piston 10 promoted to the right, will export 14 and seal.
When coil 1 energising, the electromagnetic force that coil produces overcomes the difference force of spring force and high-pressure medium, make on the core iron 4 and move, with end socket 2 adhesives, drive on the sealed department 6 and move, leave pilot valve mouth 8, therefore, high-pressure medium enters outlet 14 by pilot valve mouth 8, because the circulation area sum that the circulation area of through hole 15 and pilot valve mouth 8 forms much larger than the gap between closed end equalizing orifice 108 and piston 10 and the main valve inner chamber makes piston cavity become low pressure area.At this moment, the high-pressure medium of coming in from import 19 acts on the cylindrical end face of the stepped part that forms between piston closes end 105 and the body guide section 104 and piston closes end 105, because the power of the high-pressure medium of piston outside is much larger than the pressure medium of piston cavity 107 and the elastic force of returning spring 12, promote piston 10 to moving to left, outlet 14 is opened, and high-pressure medium directly flows to outlet 14 from import 19.
When piston 10 moves to left, when surface of contact 101 and end cap 11 are inconsistent, end cap 11 is sealed piston cavity 107, at this moment, the pressure that the medium of coming in by the closed end equalizing orifice produces in piston cavity 107 can increase rapidly, and because the existence of tail end equalizing orifice 102 makes that the medium in the piston cavity 107 can enter through hole 15 by tail end equalizing orifice 102, and flow to pilot valve cavity 13, make the pressure balance of piston cavity 107.
Adopt scheme of the present utility model, the surface of contact 101 of piston 10 can be directly and end cap 11 inconsistent, thereby can omit the boss that is arranged on end cap or internal piston in the prior art, and needn't worry to cause solenoid valve to break down because of piston 10 distortion.Be the end cap of boss shape with respect to prior art, end cap of the present utility model is plane shape, can save wide variety of materials; Need dig out an annular space that internal diameter is less with respect to the piston structure that boss is set in inside in the prior art, piston structure of the present utility model has been cancelled boss, thereby greatly reduces difficulty of processing, and has improved work efficiency.
The above, it only is the preferred embodiment that the utility model is used for guide electromagnetic valve, be not that the utility model is done any pro forma restriction, any those of ordinary skill in the art, do not breaking away under the technical solutions of the utility model scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations, except circle, can also be oval such as the sectional shape of main valve receiving cavity and piston, other any suitable shape such as polygonal or the like.Therefore, every content that does not break away from technical solutions of the utility model, all still belongs in the scope of technical solutions of the utility model protection any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.
Claims (10)
1, guide electromagnetic valve comprises the main valve (7) that is provided with outlet (14), import (19), the pilot-actuated valve parts (18) of fixedlying connected with described main valve (7); Described main valve (7) further has receiving cavity, the described receiving cavity of end cap (11) shutoff, thus form main valve cavity (13); Form pilot valve cavity (16) between described main valve (7) and the described institute's pilot-actuated valve parts (18); Described main valve (7) inside offers through hole (15), and pilot valve cavity (16) and main valve cavity (13) are communicated with.Be provided with in the described main valve cavity (13) by to-and-fro motion control outlet (14) and open or closed piston (10);
It is characterized in that, be provided with annular space between the tail end (106) of described piston (10) and the inwall of described receiving cavity end.
2, guide electromagnetic valve as claimed in claim 1 is characterized in that, the annular width of described annular space is 0.5-1mm, highly is 1-3mm.
3, guide electromagnetic valve as claimed in claim 1 or 2, it is characterized in that, described annular space is that the outside diameter of the tail end (106) of piston (10) forms step-like structure less than the outside diameter of body guide section (104), thus the annular space (17) that between the inwall of described tail end (106) and described main valve receiving cavity, forms.
4, guide electromagnetic valve as claimed in claim 1 or 2 is characterized in that, described annular space is the annular space (20) of the end of described main valve receiving cavity along formation between the tail end (106) of ring-shaped step that circumferentially is provided with and described piston (10).
5, as the guide electromagnetic valve of the arbitrary claim of claim 1-4, it is characterized in that, tail end (106) bottom centre of described piston (10) inwardly offers piston cavity (107) vertically, make the bottom surface of piston tail end (106) form the surface of contact (101) of annular, described surface of contact (101) is conflicted with the end face of described end cap (11) when solenoid valve is worked or is separated; The area of the end face of described end cap (11) is greater than the area of described surface of contact (101).
6, guide electromagnetic valve as claimed in claim 1, it is characterized in that, described pilot-actuated valve parts (18) comprise sleeve pipe (3), be located at the outside coil (1) of described sleeve pipe (3), be located at core iron (4), the end socket (2) in the described sleeve pipe and be located at described core iron (4) and end socket (2) between Returnning spring (5), the end of described core iron (4) further is provided with sealed department (6).
7, guide electromagnetic valve as claimed in claim 6 is characterized in that, described sealed department (6) is a steel ball.
As claim 1 or 7 described guide electromagnetic valves, it is characterized in that 8, described pilot-actuated valve parts (18) are fixing by interference fit and welding with main valve (7), be provided with pilot valve mouth (8) between the two so that both are communicated with; Described sealed department (6) is controlled the switching of described pilot valve mouth (8) under the difference force effect.
9, as claim 1 or 7 described guide electromagnetic valves, it is characterized in that described main valve (7) structure that is formed in one.
10, as claim 1 or 7 described guide electromagnetic valves, it is characterized in that, described piston (10) comprises tail end (106), body guide section (104) and closed end (105), offer closed end equalizing orifice (108) on the described closed end (105), described tail end (106) offers tail end equalizing orifice (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201301769U CN201284871Y (en) | 2008-08-08 | 2008-08-08 | Pilot type solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201301769U CN201284871Y (en) | 2008-08-08 | 2008-08-08 | Pilot type solenoid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201284871Y true CN201284871Y (en) | 2009-08-05 |
Family
ID=40949856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201301769U Expired - Lifetime CN201284871Y (en) | 2008-08-08 | 2008-08-08 | Pilot type solenoid valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN201284871Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052468A (en) * | 2009-11-01 | 2011-05-11 | 浙江三花制冷集团有限公司 | Flow path switch control device |
| CN102235539A (en) * | 2010-04-29 | 2011-11-09 | 浙江三花股份有限公司 | Solenoid valve |
| CN102235514A (en) * | 2010-04-29 | 2011-11-09 | 浙江三花股份有限公司 | Valve seat |
| CN102996882A (en) * | 2011-09-13 | 2013-03-27 | 浙江三花股份有限公司 | Solenoid valve |
| CN103256421A (en) * | 2013-03-07 | 2013-08-21 | 荆门市广恒机电设备有限公司 | Electromagnetic zone control valve for high-pressure water mist extinguishing system |
| CN104728509A (en) * | 2013-12-18 | 2015-06-24 | 浙江三花股份有限公司 | Solenoid valve and refrigeration system with same |
| CN104728483A (en) * | 2013-12-20 | 2015-06-24 | 杭州三花研究院有限公司 | Flow control valve and control method thereof and refrigeration system |
| CN105570470A (en) * | 2015-12-20 | 2016-05-11 | 西安航天动力研究所 | Built-in pilot operated solenoid valve |
| CN106322867A (en) * | 2015-06-24 | 2017-01-11 | 浙江三花汽车零部件有限公司 | Refrigerant control device, as well as control system and control method thereof |
| CN106439171A (en) * | 2016-11-14 | 2017-02-22 | 珠海格力电器股份有限公司 | Electronic expansion valve device, control method thereof and multi-split system |
| CN110410511A (en) * | 2018-04-27 | 2019-11-05 | 株式会社鹭宫制作所 | Control valve |
| CN111120667A (en) * | 2018-10-30 | 2020-05-08 | 杭州三花研究院有限公司 | Electromagnetic valve |
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2008
- 2008-08-08 CN CNU2008201301769U patent/CN201284871Y/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052468A (en) * | 2009-11-01 | 2011-05-11 | 浙江三花制冷集团有限公司 | Flow path switch control device |
| CN102235514B (en) * | 2010-04-29 | 2016-05-18 | 浙江三花股份有限公司 | A kind of valve seat |
| CN102235539A (en) * | 2010-04-29 | 2011-11-09 | 浙江三花股份有限公司 | Solenoid valve |
| CN102235514A (en) * | 2010-04-29 | 2011-11-09 | 浙江三花股份有限公司 | Valve seat |
| CN102996882A (en) * | 2011-09-13 | 2013-03-27 | 浙江三花股份有限公司 | Solenoid valve |
| CN103256421A (en) * | 2013-03-07 | 2013-08-21 | 荆门市广恒机电设备有限公司 | Electromagnetic zone control valve for high-pressure water mist extinguishing system |
| CN103256421B (en) * | 2013-03-07 | 2015-03-25 | 荆门市广恒机电设备有限公司 | Electromagnetic zone control valve for high-pressure water mist extinguishing system |
| CN104728509B (en) * | 2013-12-18 | 2017-04-19 | 浙江三花制冷集团有限公司 | Solenoid valve and refrigeration system with same |
| CN104728509A (en) * | 2013-12-18 | 2015-06-24 | 浙江三花股份有限公司 | Solenoid valve and refrigeration system with same |
| CN104728483A (en) * | 2013-12-20 | 2015-06-24 | 杭州三花研究院有限公司 | Flow control valve and control method thereof and refrigeration system |
| CN104728483B (en) * | 2013-12-20 | 2018-10-19 | 杭州三花研究院有限公司 | A kind of flow control valve and its control method and refrigeration system |
| CN106322867A (en) * | 2015-06-24 | 2017-01-11 | 浙江三花汽车零部件有限公司 | Refrigerant control device, as well as control system and control method thereof |
| CN106322867B (en) * | 2015-06-24 | 2019-05-31 | 浙江三花汽车零部件有限公司 | The control system and control method of refrigerant controller, the refrigerant controller |
| CN105570470A (en) * | 2015-12-20 | 2016-05-11 | 西安航天动力研究所 | Built-in pilot operated solenoid valve |
| CN106439171A (en) * | 2016-11-14 | 2017-02-22 | 珠海格力电器股份有限公司 | Electronic expansion valve device, control method thereof and multi-split system |
| CN106439171B (en) * | 2016-11-14 | 2019-07-05 | 珠海格力电器股份有限公司 | Electronic expansion valve gear and its control method and multi-line system |
| CN110410511A (en) * | 2018-04-27 | 2019-11-05 | 株式会社鹭宫制作所 | Control valve |
| CN111120667A (en) * | 2018-10-30 | 2020-05-08 | 杭州三花研究院有限公司 | Electromagnetic valve |
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