CN103375629A - Electromagnetic valve - Google Patents
Electromagnetic valve Download PDFInfo
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- CN103375629A CN103375629A CN2012101257983A CN201210125798A CN103375629A CN 103375629 A CN103375629 A CN 103375629A CN 2012101257983 A CN2012101257983 A CN 2012101257983A CN 201210125798 A CN201210125798 A CN 201210125798A CN 103375629 A CN103375629 A CN 103375629A
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Abstract
The invention relates to an electromagnetic valve which comprises a valve body, a piston and a medium channel arranged on the valve body. The valve body comprises a valve body cavity and is provided with a medium outlet and a medium inlet which are communicated with the valve body cavity. The piston reciprocates in the valve body cavity to control opening and closing of the medium outlet and is provided with a piston cavity. The medium channel arranged on the valve body is used for transferring media in the piston cavity to the medium outlet. When the medium channel is opened, the piston controls the medium outlet to be opened under the effect of difference of the pressure inside the piston and the pressure outside the piston. The electromagnetic valve further comprises a buffering device. The buffering device is used for being matched with the piston to control the speed of the media in the piston cavity entering the medium channel when the medium channel is opened. The electromagnetic valve has the advantage that the speed of the media in the piston cavity entering the medium outlet through the medium channel is reduced when the medium channel is opened, piston moving speed is reduced, and medium impact noise and pipeline vibration noise are reduced. Meanwhile, fatigue breaking of the pipeline can be effectively prevented, and the reliability of a device using the electromagnetic valve is improved.
Description
Technical field
The present invention relates to the control valve for fluids field, especially a kind of solenoid valve for refrigeration system.
Background technique
The big caliber electromagnetic valve of prior art (as shown in Figure 1), comprise the valve body that is provided with media outlet 14 and medium import 13, the pilot valve that is connected with valve body, described pilot valve comprises sleeve pipe 4, be fixedly installed on sleeve pipe 4 coil 2 outward by screw 1, be provided with end socket parts 3, core iron 6 in the described sleeve pipe 4, one end of described core iron 6 is connected with described end socket parts 3 by Returnning spring 5, the other end of described core iron 6 is connected with a sealed department 7, described end socket parts 3 are arranged on the end of described sleeve pipe 4, and described screw 1 is fixed on the described end socket parts 3.
Also be provided with pilot valve mouth 802 on the valve body, wherein the internal diameter of pilot valve mouth 802 and sealed department 7 is big or small suitable, and the internal diameter of medium import 13, media outlet 14 passes through with the medium that adapts to large flow much larger than the internal diameter of pilot valve mouth 802.
The top of pilot valve mouth 802 forms a pilot valve cavity 803 that is surrounded by sleeve pipe 4, end socket parts 3, Returnning spring 5 and core iron 6.
The inside of valve body is provided with the valve body cavity, and piston 9 is arranged in this valve body cavity, and the shape of the shape of piston 9 and described valve body cavity is suitable.
Also be provided with medium channel in the valve body, pilot valve cavity 803 is communicated with the valve body cavity.
The working principle of solenoid valve is, control the back and forth movement of core iron 6 by the electromagnetic force of coil 2 generations, and come the switching of control media passage, the further to-and-fro motion of control piston 9 in the valve body cavity, thereby the switching of control media outlet 14 by the sealed department of core iron 6 one ends.
But the employing said structure, when coil electricity, piston of electromagnetic valve moment opens, and high voltage terminal medium moment is poured low voltage terminal.At this moment, high-pressure medium forms huge impact force in the low voltage terminal pipeline, cause play in the pipe, and huge medium impact noise.The vibrating noise of this pipeline and medium impact noise can conduct along refrigeration system pipeline always and cause indoor set, cause client's complaint.
In addition, the pipeline vibration that causes for the impact that prevents high-pressure medium can cause the copper pipe fatigue fracture, and needing increases the copper pipe wall thickness, thereby has increased manufacture cost.
Summary of the invention
The purpose of this invention is to provide a kind of solenoid valve, reduce vibrating noise and the medium impact noise of pipeline.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of solenoid valve comprises:
Valve body comprises the valve body cavity, and is provided with media outlet and the medium import that is communicated with described valve body cavity;
Control the piston that described media outlet opens and closes by to-and-fro motion in described valve body cavity, this piston is provided with piston cavity;
Be arranged at the medium channel on the described valve body, be used for the medium transmission in the described piston cavity to described media outlet, when described medium channel conducting, the described media outlet of control is opened under the poor effect of pressure outside within it of described piston;
Described solenoid valve also comprises:
One damping device is used for when described medium channel conducting, the speed that cooperates the medium in the described piston cavity of control to enter described medium channel with described piston.
Further, described damping device is arranged in the piston cavity of described piston.
Further, described damping device comprises:
Be arranged on the push rod in the described piston cavity, be provided with the push rod cavity that is communicated with described piston cavity;
Equalizing orifice is arranged on the sidewall of described push rod, is used for described push rod cavity is communicated with described valve body cavity.
Further, described damping device also comprises:
Elastic member is arranged in the described push rod cavity, is used for promoting described piston movement when described piston internal and external pressure balance, seals described media outlet.Further, be provided with Sealing between described push rod outer wall and the described piston cavity sidewall, described Sealing has between the end of opening at described equalizing orifice and described push rod.
Further, described piston is provided with the through hole that can enter for medium described piston cavity, and this through hole is between described Sealing and described piston cavity bottom.
Further, the degree of depth of described piston cavity is less than the height of described push rod.
Further, described push rod and described piston cavity bottom from an end and described piston cavity between form annular space.
Further, described push rod and described piston cavity bottom from recessed formation first recess of outer wall of an end, the described annular space of formation between described the first recess and the described piston cavity, described equalizing orifice is positioned at described the first recess.
Further, described piston cavity and described media outlet from recessed formation second recess of sidewall of an end, form described annular space between the outer wall of described the second recess and described push rod, the position of described equalizing orifice is corresponding with the position of described the second recess.
The invention has the beneficial effects as follows: during described medium channel conducting, reduce the medium in the piston cavity enters media outlet by medium channel speed, so that the piston external and internal pressure is poor rapid variation can not occur, thereby reduce the speed that piston moves, reduce medium to the impact of low voltage terminal pipeline, reduce the vibrating noise of medium impact noise and pipeline.Can effectively prevent simultaneously the fatigue fracture of pipeline, improve the reliability of the equipment of using this solenoid valve.
Description of drawings
Fig. 1 prior art solenoid valve schematic representation;
Fig. 2 represents structural representation of the present invention;
Fig. 3 represents piston schematic representation of the present invention;
Fig. 4 represents push rod schematic representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing structure of the present invention and principle are elaborated, illustrated embodiment only is used for explaining the present invention, is not to limit protection domain of the present invention with this.
This patent provides a kind of solenoid valve, reduces the vibrating noise of medium impact noise and pipeline.Can effectively prevent simultaneously the fatigue fracture of pipeline, improve the reliability of the equipment of using this solenoid valve.Such as Fig. 2, Fig. 3 and shown in Figure 4, the present embodiment solenoid valve comprises:
Valve body comprises valve body cavity 806, and is provided with media outlet 14 and the medium import 13 that is communicated with described valve body cavity 806;
The piston 9 that opens and closes by control described media outlet 14 in described valve body cavity 806 interior to-and-fro motion, this piston 9 is provided with piston cavity 902;
Be arranged at the medium channel 805 on the described valve body, be used for the medium transmission in the described piston cavity to described media outlet, when described medium channel conducting, the described media outlet 14 of control is opened under the poor effect of pressure outside within it of described piston 9;
Described solenoid valve also comprises:
One damping device is used for when described medium channel conducting, the speed that cooperates the medium in the described piston cavity 902 of control to enter described medium channel with described piston 9.
Solenoid valve adopts the structure of damping device in the present embodiment, so that open at solenoid valve, medium channel is opened, when piston 9 moves to close valve body end cap 12 directions, control piston 9 is away from the medium transmission of the media outlet one end speed to media outlet, so that piston 9 can sharply not reduce away from the pressure of media outlet one end, reduce the conversion of the pressure difference of piston 9 both sides, reduce the speed that piston 9 moves, thereby medium can not flow out from media outlet 14 moment, reduce medium to the impact of pipeline, reduce medium impact noise and pipeline vibrating noise, can prevent effectively that pipeline is because frequently being subject to impacting the phenomenon of the fatigue fracture that causes simultaneously.
Described damping device can adopt various way of realization, can be arranged on various position, as long as relative prior art, play and reduce medium impact noise and pipeline vibrating noise, can effectively prevent that pipeline from getting final product because of the effect of the phenomenon that frequently is subject to impacting the fatigue fracture that causes simultaneously.In the present embodiment preferred implementation, described damping device is arranged in the piston cavity 902 of described piston.
In the present embodiment, described damping device comprises:
Equalizing orifice 105 is arranged on the sidewall of described push rod 10, is used for described push rod cavity 106 is communicated with described piston cavity 902.
Described damping device adopts the said structure form, so that when moving right (according to direction shown in Fig. 2) at piston 9, medium in the push rod cavity 106 reduces the conversion of the pressure difference at piston 9 two ends, thereby reduces the speed that piston moves for piston provides a reverse active force.
Preferably, on the structural type basis of above-mentioned damping device, described solenoid valve also comprises an elastic member, is arranged in the described push rod cavity 106, is used for when described piston 9 internal and external pressure balance, promotes described piston 9 motions, seals described media outlet 14.
Described elastic member can adopt various forms, also can be arranged on different positions, as long as can be used for when described piston 9 internal and external pressure balance, promotes described piston 9 motions, seals described media outlet 14 and gets final product.For example, elastic member can be arranged between the end cap 12 of piston 9 away from the end face of an end of media outlet 14 and valve body cavity.
Elastic member described in the present embodiment adopts spring 11, and described spring 11 is arranged in the described push rod cavity 106, and an end of described spring 11 is connected with the bottom of described push rod cavity 106, and the other end is connected with the bottom of described piston cavity 902.
Preferably, in order further to reduce the speed when piston 9 moves right, be provided with Sealing 17 between described push rod 10 outer walls 102 and described piston cavity 902 sidewalls, described Sealing 17 has between the end of opening at described equalizing orifice 105 and described push rod 10.When the solenoid valve energising, when piston 9 moves to the direction near end cap 12, medium in the piston cavity 902 by shutoff in push rod cavity 106, can only enter by the equalizing orifice 105 on push rod 10 sidewalls in the valve body cavity 806, with guarantee piston 9 near the end face of an end of end caps 12 be subject to one with piston 9 movement direction opposite effect power, thereby slow down the speed that piston 9 moves.
The structure of described piston 9 as shown in Figure 3, piston 9 comprises main body guide section 903, closed end 901, tail end 904, valve body cavity 806 in the guide surface of main body guide section 903 and the valve body forms Spielpassung, thereby it is mobile that main body guide section 903 can be come and gone in described valve body cavity, when electromagnetic valve work, medium can enter internal piston by the guide surface of main body guide section 903 and the gap of valve body valve body cavity.
The external diameter of closed end 901 is less than the external diameter of main body guide section 903, thereby forms step-like structure between both are adjacent.Closed end 901 is provided with sealing plug 16, and sealing plug 16 adopts the PTFE materials to make usually, directly cooperates to realize to open with described media outlet 14 or closes described media outlet 14 described sealing plugs 16 and rivet the structure that is fixed as one by pad 15 and piston.
Piston 9 is hollow structure, be provided with piston cavity 902 in it, closed end 901 goes out to offer closed end equalizing orifice 906 near main body guide section 903, make the outside conducting of piston cavity 902 and piston, the internal diameter of closed end equalizing orifice 906 is set to 0.5-1.5mm, and medium can be flowed by closed end equalizing orifice 906.
Closed end equalizing orifice 906 on the described piston 9 is between described Sealing 17 and described piston cavity 902 bottoms.In coil 2 outages, during 802 sealing of pilot valve mouth, make medium enter fast piston cavity 902, make piston 9 stress balances.
Preferably, the degree of depth of described piston cavity 902 is less than the height of described push rod 10.Move to close valve body end cap 12 directions at piston 9, until piston cavity 902 bottoms and push rod 10 have the end face 101 of an end of opening when offseting, be formed at the through hole that described medium channel is connected between piston 9 and the end cap 12, avoid frequent between piston 9 and the end cap 12 to contact the distortion that causes, thereby avoid the movement of image piston in valve body cavity 806.
Preferably, described push rod 10 and described piston cavity 902 bottoms from an end and described piston cavity 902 between form annular space so that the media in the push rod cavity 106 enter the valve body cavity smoothly from equalizing orifice 105.
The form of above-mentioned annular space has multiple, preferably, described push rod 10 and described piston cavity 902 bottoms from recessed formation first recess 103 of outer wall of an end, form described annular space between described the first recess 103 and the described piston cavity 902, described equalizing orifice 105 is positioned at described the first recess.
The formation of described annular space can also be adopted other modes, for example: described piston cavity 902 and described media outlet 14 from recessed formation second recess of sidewall of an end, form described annular space between the outer wall of described the second recess and described push rod 10, the position of described equalizing orifice 105 is corresponding with the position of described the second recess.
The working procedure of solenoid valve of the present invention is below described.
When coil 2 outage, under the effect of Returnning spring 5, core iron 6 drives steel ball 7 and moves down, with 802 sealings of pilot valve mouth.High-pressure medium enters medium import 13, enter in the push rod cavity 106 by the equalizing orifice 105 on the gap between piston and the body cavity, the push rod 10, namely enter in the piston cavity 902, and enter in the pilot valve cavity 803 by the through hole between piston 9 and the end cap 12, medium channel 805, and this moment, be high-pressure medium from medium import 13 to piston cavity 902, in the medium channel 805, pilot valve cavity 803, therefore be in pressure balance inside and outside the piston 9, under the effect of spring 11, pushing piston 9 moves, with media outlet 14 sealings.
At this moment, piston is low pressure near the pressure of end cap one side, and sealing a side is high pressure.Piston is under the effect of pressure reduction, to end cap one lateral movement.
When coil 2 energising, the coil 2 inner electromagnetic forces that produce.The electromagnetic force that coil 2 produces overcomes the difference force of spring force and high-pressure medium, and core iron 6 is to 3 one lateral movements of end socket parts, and drive steel ball 7 breaks away from pilot valve mouths 802.High-pressure medium enters media outlet 14 by medium channel 805, pilot valve mouth 802 successively, because the circulation area sum that the circulation area of medium channel 805 and pilot valve mouth 802 forms much larger than the gap between closed end equalizing orifice 906 and piston 9 and the body cavity 806 is so that piston cavity becomes low pressure area.At this moment, the high-pressure medium that enters from medium import 13 acts on the circle end face of the ledge structure that forms between piston closes end 901 and the main body guide section 903 and piston closes end 901, since the pressure of the high-pressure medium of piston 9 outsides in the piston cavity 902 pressure medium and the elastic force of spring 11, pushing piston 9 moves to the direction near end cap 12;
But, owing to be provided with Sealing 17 between the push rod 10 in the piston cavity 902 and the piston cavity 902, medium in the push rod cavity 106 by blocking in push rod cavity 106, between push rod 10 and piston 9, form the medium spring, be that push rod cavity 106 interior media provide a reverse active force for piston, reduce the conversion of the pressure difference at piston 9 two ends, thereby reduce the speed that piston moves, and the movement along with piston 9, shutoff at the medium of 106 inside under the effect of piston pressure difference power, slowly be discharged in the cavity 806 from equalizing orifice 105, piston is also slowly to end cap one lateral movement, offset until piston cavity 902 bottom end faces and push rod 10 have the end face 101 of an end of opening, high-pressure medium directly enters media outlet 14 from medium import 13.
The above is preferred embodiment of the present invention; be not to limit protection scope of the present invention with this; any those of ordinary skill in the art; in the situation of the scope that does not break away from technological scheme of the present invention; all can utilize method and the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, within the spirit and principles in the present invention every, any simple modification of doing, be equal to replacement, all should belong in protection scope of the present invention.
Claims (10)
1. solenoid valve comprises:
Valve body comprises the valve body cavity, and is provided with media outlet and the medium import that is communicated with described valve body cavity;
Control the piston that described media outlet opens and closes by to-and-fro motion in described valve body cavity, this piston is provided with piston cavity;
Be arranged at the medium channel on the described valve body, be used for the medium transmission in the described piston cavity to described media outlet, when described medium channel conducting, the described media outlet of control is opened under the poor effect of pressure outside within it of described piston;
It is characterized in that described solenoid valve also comprises:
One damping device is used for when described medium channel conducting, the speed that cooperates the medium in the described piston cavity of control to enter described medium channel with described piston.
2. solenoid valve according to claim 1 is characterized in that, described damping device is arranged in the piston cavity of described piston.
3. solenoid valve according to claim 2 is characterized in that, described damping device comprises:
Be arranged on the push rod in the described piston cavity, be provided with the push rod cavity that is communicated with described piston cavity;
Equalizing orifice is arranged on the sidewall of described push rod, is used for described push rod cavity is communicated with described valve body cavity.
4. solenoid valve according to claim 3 is characterized in that, described damping device also comprises:
Elastic member is arranged in the described push rod cavity, is used for promoting described piston movement when described piston internal and external pressure balance, seals described media outlet.
5. solenoid valve according to claim 3 is characterized in that, is provided with Sealing between described push rod outer wall and the described piston cavity sidewall, and described Sealing has between the end of opening at described equalizing orifice and described push rod.
6. solenoid valve according to claim 5 is characterized in that, described piston is provided with the through hole that can enter for medium described piston cavity, and this through hole is between described Sealing and described piston cavity bottom.
7. solenoid valve according to claim 3 is characterized in that, the degree of depth of described piston cavity is less than the height of described push rod.
8. solenoid valve according to claim 7 is characterized in that, described push rod and described piston cavity bottom from an end and described piston cavity between form annular space.
9. solenoid valve according to claim 8, it is characterized in that, described push rod and described piston cavity bottom from recessed formation first recess of outer wall of an end, the described annular space of formation between described the first recess and the described piston cavity, described equalizing orifice is positioned at described the first recess.
10. solenoid valve according to claim 8, it is characterized in that, described piston cavity and described media outlet from recessed formation second recess of sidewall of an end, form described annular space between the outer wall of described the second recess and described push rod, the position of described equalizing orifice is corresponding with the position of described the second recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101257983A CN103375629A (en) | 2012-04-24 | 2012-04-24 | Electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101257983A CN103375629A (en) | 2012-04-24 | 2012-04-24 | Electromagnetic valve |
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| Publication Number | Publication Date |
|---|---|
| CN103375629A true CN103375629A (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101257983A Pending CN103375629A (en) | 2012-04-24 | 2012-04-24 | Electromagnetic valve |
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| CN (1) | CN103375629A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565391A (en) * | 2014-12-31 | 2015-04-29 | 瑞安市东方阀门有限公司 | Anti-vibration solenoid valve |
| 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 |
| CN106678431A (en) * | 2017-03-10 | 2017-05-17 | 嘉兴科锐自动化科技有限公司 | Normally open solenoid-operated valve |
| CN107023704A (en) * | 2016-02-01 | 2017-08-08 | 罗伯特·博世有限公司 | Valve cylinder for the valve armature of magnetic valve and for magnetic valve |
| CN108025932A (en) * | 2015-10-02 | 2018-05-11 | 麦克赛尔控股株式会社 | The pH of electrolyzed hydrogen water maker and electrolyzed hydrogen water reduces method |
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|---|---|---|---|---|
| CN85201792U (en) * | 1985-04-29 | 1986-08-27 | 浙江瑞安永久机电研究所 | Multifunction electromagnetic valve |
| US6739139B1 (en) * | 2003-05-29 | 2004-05-25 | Fred D. Solomon | Heat pump system |
| WO2009002447A1 (en) * | 2007-06-21 | 2008-12-31 | Gen-Probe Incorporated | Instrument and receptacles for use in performing processes |
| CN201215210Y (en) * | 2008-04-28 | 2009-04-01 | 浙江新三荣制冷有限公司 | Piston type solenoid valve |
-
2012
- 2012-04-24 CN CN2012101257983A patent/CN103375629A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85201792U (en) * | 1985-04-29 | 1986-08-27 | 浙江瑞安永久机电研究所 | Multifunction electromagnetic valve |
| US6739139B1 (en) * | 2003-05-29 | 2004-05-25 | Fred D. Solomon | Heat pump system |
| WO2009002447A1 (en) * | 2007-06-21 | 2008-12-31 | Gen-Probe Incorporated | Instrument and receptacles for use in performing processes |
| CN201215210Y (en) * | 2008-04-28 | 2009-04-01 | 浙江新三荣制冷有限公司 | Piston type solenoid valve |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN104565391A (en) * | 2014-12-31 | 2015-04-29 | 瑞安市东方阀门有限公司 | Anti-vibration solenoid valve |
| CN104565391B (en) * | 2014-12-31 | 2017-05-24 | 浙江亿斯特阀门有限公司 | Anti-vibration solenoid valve |
| CN108025932A (en) * | 2015-10-02 | 2018-05-11 | 麦克赛尔控股株式会社 | The pH of electrolyzed hydrogen water maker and electrolyzed hydrogen water reduces method |
| CN107023704A (en) * | 2016-02-01 | 2017-08-08 | 罗伯特·博世有限公司 | Valve cylinder for the valve armature of magnetic valve and for magnetic valve |
| CN107023704B (en) * | 2016-02-01 | 2019-07-16 | 罗伯特·博世有限公司 | For the valve armature of solenoid valve and for the valve cylinder of solenoid valve |
| CN106678431A (en) * | 2017-03-10 | 2017-05-17 | 嘉兴科锐自动化科技有限公司 | Normally open solenoid-operated valve |
| CN106678431B (en) * | 2017-03-10 | 2022-12-27 | 林兵磊 | Normally open solenoid electric valve |
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Application publication date: 20131030 |