CN103216663A - Electric valve - Google Patents
Electric valve Download PDFInfo
- Publication number
- CN103216663A CN103216663A CN2013101134189A CN201310113418A CN103216663A CN 103216663 A CN103216663 A CN 103216663A CN 2013101134189 A CN2013101134189 A CN 2013101134189A CN 201310113418 A CN201310113418 A CN 201310113418A CN 103216663 A CN103216663 A CN 103216663A
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- Prior art keywords
- valve
- rotor
- slip ring
- stop rod
- stator
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Abstract
The invention relates to an electric valve, comprising a valve body, a shell, a rotor and a stopping part, wherein the valve body is provided with a valve needle, and the passing flow of fluid is adjusted by the valve needle contacted with and separated from a valve seat in a valve chamber; the shell is fixed on the valve body; the rotor is arranged in the shell and converts rotation formed by a magnetic field generated by the stator into contact and separation between the valve needle and the valve seat; the stopping part comprises a stopping rod and a sliding ring and is used for limiting the position of the rotor; the stator is externally arranged on the shell and drives the rotor to rotate; and the sliding ring can be configured in a spring guide rail and the stopping rod in a sliding manner, and meanwhile, a metal-plated layer with lubricity or a coating made of fluororesin is formed on the surface of at least one of the sliding ring and the stopping rod. The metal-plated layer is made of materials with polytetrafluoroethylene-contained nickel and the coating is made of polytetrafluoroethylene materials.
Description
Affiliated technical field
The present invention relates to the mortor operated valve on refrigeration systems such as air conditioner, refrigerating machine, installed and used, especially relate to a kind of good relatively mortor operated valve of valve performance of opening.
Background technique
At present, thisly be installed in the mortor operated valve that air conditioner, refrigerating machine etc. go up to use, have the function of the fluid flow of adjusting refrigerant etc., have usually: the valve body that comprises valve chamber and valve seat; Be fixed on the cylinder-like shell that the end is arranged on the top of valve body by flange shape plate, be built-in with rotor in the inside of shell and place restrictions on the retainer of rotor-position, outside shell outside, the stator that central authorities have through hole is housed.
Fig. 5 is an example of a kind of typical mortor operated valve in the prior art.Fig. 5 has represented the longitudinal section of the mortor operated valve 1 of this structure, valve body 20 has valve chamber 23a and spigot nut fixing part 23b, in valve chamber 23a, be provided with the liquid in-out pipe 22,21 that fluid such as refrigeration agent is come in and gone out, simultaneously its inside is equipped with valve seat 23, and this valve seat 23 and the valve port 48a of needle 48 front ends formation contact and leave and realize flow control.
It is fixing with valve seat 23 and spigot nut 30 that described spigot nut fixing part 23b is positioned at valve chamber 23a top.Be provided with guide ring 31 at valve seat 23 and 30 of spigot nuts, be shaped on internal thread part 30a interior week at this spigot nut 30, excircle is shaped on vent slot 30b, vent slot 30b and guide ring 31 constitute air vent, so that during the mortor operated valve working state, air pressure isopiestic equilibrations on the valve body in valve chamber 23a and the housing 50, screw axis is to form by the interference fit installation after screw mandrel 44 is made respectively with axle 43, in screw axis, the external thread part 44b that forms on the cylindrical of screw mandrel 44 screws on the internal thread part 30a that is shaped in interior week of spigot nut 30, and the internal and external threads portion of screw mandrel 44 and spigot nut 30 constitutes the screw pair feed mechanism.Needle 48 is installed also slidably in the underpart of screw mandrel 44, compression helical spring 47 by being compressed the underpart inner chamber that is installed in screw mandrel 44 when this needle 48 is flat is by downwards pressured, for increasing the flexibility ratio of compression helical spring 47 along the spring center rotation, in compression helical spring 47 end faces and screw mandrel underpart intracavity bottom, smooth pad 46 is housed, for restriction needle 48 is compressed the underpart inner chamber that helical spring 47 is released screw mandrel 44, the place is equipped with spacing back-up ring 49 in screw mandrel 44 inner chamber ends.Simultaneously, underpart inner chamber 44c and screw mandrel 44 peripheral air pressure isopiestic equilibrationses for making screw mandrel 44 are shaped on balance aperture 44a on screw mandrel 44 inner chamber cylndrical surface.
The housing 50 that is fixed on valve body 20 tops is made up of end cylindrical shell 51 grades cylindric, there are being cylindrical shell 51 bottoms in the end to be provided with support unit 60, support unit 60 is made up of bearing support 61 and stop rod 62 again, bearing support 61 is the dome shape, be shaped on round tube hole 61a in the middle of it, on the bottom plane of its dome shape, be welded with stop rod 62, the bearing support external cylindrical surface with have cylindrical shell 51 inner headed faces in the end to cooperate on the circumference of back to fix with being no less than three little recess 51a to convex.Housing 50 and flange shape plate 24 are positioned at the upper end of valve body 20, have cylindrical shell 51 lower ending opening portions in the end to carry out butt welding with the stepped part that is fixed on the flange shape plate 24 on the valve body with welding etc. and connect, its inner airtight conditions that keeps.
The rotor magnetic ring 45 that has permanent magnetism in the rotor 40 is arranged on the screw axis middle part; Have a little elongated slot in screw axis axis 43 upper end portions, axle 43 outer peripheral surfaces near the little elongated slot bottom are shaped on a circular groove, cylindrical place on axle 43, spring guide rail 42 and slip ring 41 are housed, spring guide rail 42 1 spacing termination 42a be bumped in the axle 43 upper end portion little elongated slots back with a snap ring 49 fastening after, spring guide rail 42 with axle 43 consolidate into, and axle 43 upper end portion cylindricals and bearing support 61 middle circle through hole 61a activity cooperates.
The upper and lower limit that rotor 40 moves up and down is to implement by the braking part that the axle 43 upper spring guide rails 42 that are fixed on screw axis and slip ring 41 and stop rod 62 constitute.Slip ring 41 is arranged in the spiral chute of spring guide rail 42 and axle 43 top cylindricals compositions, and can in its groove, slide up and down, when mortor operated valve needs close port, rotor 40 order pins rotate, the long termination 41a of slip ring 41 is resisted against stop rod 62 left side 62a and goes up upwards slip of axle 43 relatively, until slip ring 41 the other end 41b and the spacing termination 42a touching that is located on the spring guide rail 42, place restrictions on slip ring 41 axle 43 upwards slip more relatively, like this, rotor 40 just can't rotate again, realizes that rotor 40 lower limits are spacing; When mortor operated valve need be opened valve port, rotor 40 upwards rotates counterclockwise, the long termination 41a of slip ring 41 is resisted against stop rod 62 right side 62b and goes up relative 43 to lower slider, until slip ring 41 long termination 41a and the following stop part 42b touching that is located on the spring guide rail 42, place restrictions on slip ring 41 relatively axle 43 again to lower slider, like this, rotor 40 just can't be rotated further again, realizes that rotor 40 upper limits are spacing.
Be contained in housing 50 inside in the rotor 40, stator 70 outer housing 50 outsides that are contained in; Stator 70 has the middle card complex hole that is fastened on the housing 50, stator 70 inside accommodate stator coil 73 and the yoke 71,74 that is wound on the coil rack 72 up and down, external application unsaturated resin 75 plastic packagings, stator coil 73 is connected power supply by lead 80 and the terminal 80a that is located at stator 70 peripheries.When the energising of stator coil 73, yoke 71,74 is rotated by the excitatory rotor 40 of making, and makes in the rotor 40 needle 48 drive front end valve port 48a by feed screw mechanism and carries out the adjustment of refrigerant flow as on-off action.
Be provided with one on the card complex hole one side stage rank of stator 70 end cap 92 is arranged, the open end of described cap 92 is shaped on slot, this slot is built-in with buckle 91, buckle 91 is provided with and the above-mentioned described spherical crown shape projection 91a that little recess 51a tabling on the end cylindrical shell 51 is arranged, and the open end of described cap 92 is fixedlyed connected by ultrasonic welding with the card complex hole one side stage rank of stator 70.In the time of in housing 50 is contained in this engaging circular hole, the top of housing 50 is touched to cap 92 inner bottom parts, realization is to the axial limiting of valve body 20 in stator 70, and spherical crown shape projection 91a is embedded on the housing 50 in the little recess 51a with the axially locating that realizes valve body 20 and the rotational fixation of relative stator 70 on the buckle 91.
But in the above mortor operated valve 1, described mortor operated valve rotor 40 moves up and down and goes up most, lower limit is to implement by the braking part of the axle 43 upper spring guide rails 42 that are fixed on screw axis and slip ring 41 and stop rod 62 formations, slip ring 41 has up and down with stop rod 62 and relatively moves, slip ring 41 and spring guide rail 42, axle 43 all relatively rotates, there is its contacting point of relative movement must produce surface friction drag, and the direction that its relative movement resistance is a surface friction drag is opposite with rotor 40 moment of rotation directions, therefore, slip ring 41 and spring guide rail 42, stop rod 62, axle 43 relative surface friction drag sizes directly have influence on the switch valve performance of mortor operated valve.Therefore, lubricity, particularly slip ring between raising slip ring and stop rod, axle, spring guide rail and the lubricity between stop rod, the surface friction drag that reduces its relative movement can improve the open and close valve performance of mortor operated valve.
Summary of the invention
Therefore, the present invention puts in view of the above problems and makes invention, and its purpose is: a kind of mortor operated valve is provided, the environment facies that use at mortor operated valve with situation, it is better relatively to open valve performance.
For achieving the above object, mortor operated valve of the present invention comprises: have it by contacting the valve body that passes through flow that the needle that leaves is adjusted fluid with valve seat in the valve chamber; Be fixed on the housing on the valve body; Be installed in the housing, the rotation that stator is produced magnetic field formation changes into the rotor that needle contacts, leaves valve seat; And comprise the retainer of placing restrictions on rotor-position that stop rod and slip ring constitute; Its outer being contained on the housing, drive the stator of described rotor rotation, described above-mentioned slip ring is configured in spring guide rail and the stop rod slidably, simultaneously, at least one surface is gone up and is formed the metal cladding with lubricity in slip ring and the stop rod, in addition, and on technique scheme, preferably, described metal cladding is to be made of the material that comprises teflon in the nickel.
Then, mortor operated valve of the present invention comprises: have it by contacting the valve body that passes through flow that the needle that leaves is adjusted fluid with valve seat in the valve chamber; Be fixed on the housing on the valve body; Be installed in the housing, the rotation that stator is produced magnetic field formation changes into the rotor that needle contacts, leaves valve seat; And comprise the retainer of placing restrictions on rotor-position that stop rod and slip ring constitute; Its outer being contained on the housing, drive the stator of described rotor rotation, it is characterized in that, above-mentioned slip ring is configured in spring guide rail and the stop rod slidably, simultaneously, at least one surface is gone up and is formed the coating that is made of fluororesin in slip ring and the stop rod, in addition, on technique scheme, described coating is to be made of polytetrafluoroethylmaterial material.
Mortor operated valve of the present invention, according to above-mentioned formation, slip ring and stop rod one side, perhaps two sides go up and form metal cladding, thereby can improve the slip of relative movement, reduce the surface friction drag when relatively moving, thereby can improve the open and close valve performance of mortor operated valve.Particularly not wishing in the refrigerant loop has in the lubricated environment of freezing wet goods in the refrigerant loop, can guarantee that also stop rod and slip ring slide reliably smoothly, improve the open and close valve performance of mortor operated valve.
In addition, mortor operated valve of the present invention, above-mentioned slip ring and stop rod one side, perhaps two sides go up and form the coating that is made of fluororesin, can improve the slip of relative movement, reduce the surface friction drag when relatively moving, thereby can improve the open and close valve performance of mortor operated valve.
Description of drawings
Fig. 1 is a mortor operated valve embodiment longitudinal section of the present invention;
Fig. 2 is the example structure schematic representation of slip ring of the present invention;
Fig. 3 is the example structure schematic representation of spring guide rail of the present invention;
Fig. 4 is that support unit of the present invention is implemented structural representation;
Fig. 5 is the longitudinal section of the mortor operated valve of prior art.
Symbol description: 1 mortor operated valve (conventional example); 10 mortor operated valves (the present invention); 20 valve bodies; 21,22 inflow and outflow pipes; 23 valve seats; The 23a valve chamber; 23b spigot nut fixing part; 24 flange shape plates; 30 spigot nuts; The 30a internal thread part; The 30b vent slot; 31 guide rings; 40 rotors; 41 slip rings; The long termination of 41a; The 41b end; The 41c metal cladding; 42 spring guide rail; The spacing termination of 42a; Stop part under the 42b; 43; 44 screw mandrels; 44a balance aperture; The 44b external thread part; The 44c inner chamber; 45 magnet rings; 46 smooth pads; 47 compression helical springs; 48 needles; The 48a valve port; 49 snap rings; 50 housings; 51 have end cylindrical shell; The little recess of 51a; 60 support units; 61 bearing supports; The 61a round tube hole; 62 stop rods; The 62a left side; The 62b right side; The 62c metal cladding; 70 stators; 71,74 yokes; 72 coil racks; 73 stator coils; 75 unsaturated resins; 80 leads; The 80a terminal; 91 buckles, 91a spherical crown shape projection; 92 caps.
Embodiment
Describe the embodiment of mortor operated valve 10 of the present invention below with reference to the accompanying drawings in detail.Fig. 1 is mortor operated valve 10 an embodiments' of the present invention longitudinal section, and Fig. 2 is the example structure schematic representation of slip ring of the present invention, and Fig. 3 is the example structure schematic representation of spring guide rail of the present invention; The enforcement structural representation of Fig. 4 support unit of the present invention.Below, in the explanation that embodiments of the present invention are carried out, among Fig. 1, Fig. 2, Fig. 3, Fig. 4 with the identical component parts of mortor operated valve 1 in the prior art example shown in Figure 5, give identical symbol, omit its explanation.
As the feature of present embodiment, nickel plating on the surface of above-mentioned slip ring 41 (Ni) perhaps, utilizes nickel (Ni) plating that comprises teflon (PTFT) to come application surface as metal cladding 41c.In addition, for stop rod 62, also surperficial the same with slip ring 41 in its surface, the metal cladding 62c that formation is made of identical materials, because stop rod 62 is welded on the bearing support 61, for guaranteeing the welding procedure of stop rod 62 and bearing support 61, can weld together the support unit 60 whole metal claddings that the back constitutes with bearing support 61 by stop rod 62.And these are handled (formation of metal cladding 62c, 41c) and can carry out on the whole surface of slip ring 41 and stop rod 62, also can be at least carry out slipping mutually on the face with slip ring 41, realize purpose of the present invention.
As above-mentioned, to carrying out above-mentioned such surface treatment with slip ring 41 and stop rod 62, rotor 40 rotations, the external thread part 44b that forms on the cylindrical by screw mandrel 44 screws on this spigot nut 30 internal thread part 30a, its internal and external threads portion constitutes the screw pair feed mechanism, axle 43 rotates, slip ring 41 endwisely slips along stop rod 62, spring guide rail 42, but by as present embodiment, slide connecting part being carried out above-mentioned surface treatment, slide swimmingly with low friction factor, reduced the torque of rotor rotation, the corresponding switching performance that has just improved mortor operated valve.
Above-mentioned electro-plating method is identical with common electroless plating nickel method.The metal cladding hardness height of above-mentioned Ni+PTFE, excellent in sliding property.Therefore,, in the mortor operated valve of controlling the low refrigerant of washability height or lubricity, still can keep normal function, the performance of performance regulation by forming above-mentioned metal cladding 62c, 41c.And metal cladding also can be formed on the relative spring guide rail 42 except forming on stop rod 62 and slip ring 41.In addition, also can on stop rod 62 and slip ring 41 and spring guide rail 42, form metal cladding.
In addition, do not wish to have in the refrigerant loop in the lubricated environment of refrigerating machine wet goods, for example, under the situation of using the carbonic-acide gas refrigerant, can guarantee that also stop rod, stop slip ring, spring guide rail etc. slide swimmingly, it is inharmonious to prevent that mortor operated valve from operating.
And, in the above-described embodiment, form metal cladding 41c, 62c on both at slip ring 41 and stop rod 62, also can any one go up formation therein.In addition, as other example, on stop rod 62 and slip ring 41, form the coating that constitutes by fluororesin, as the PTFE resin, equally, only stop rod 62 surfaces are gone up and form the coating that constitutes by fluororesin, because stop rod 62 is welded on the bearing support 61, for guaranteeing the welding procedure of stop rod 62 and bearing support 61, can stop rod 62 weld together on support unit 60 integral surfaces that the back constitutes with bearing support 61 and to form the coating that constitutes by fluororesin, can improve lubricity equally, guarantee stop rod, the stop slip ring slides swimmingly, reduce the torque of rotor rotation, correspondingly improved the switching performance of mortor operated valve.
Claims (4)
1. mortor operated valve comprises: have it by contacting the valve body that passes through flow that the needle that leaves is adjusted fluid with valve seat in the valve chamber; Be fixed on the housing on the valve body; Be installed in the housing, the rotation that stator is produced magnetic field formation changes into the rotor that needle contacts, leaves valve seat; And comprise the retainer of placing restrictions on rotor-position that stop rod and slip ring are formed; Its outer being contained on the housing drives the stator of described rotor rotation, it is characterized in that above-mentioned slip ring is configured in spring guide rail and the stop rod slidably, and simultaneously, at least one surface is gone up and formed the metal cladding with lubricity in slip ring and the stop rod.
2. mortor operated valve according to claim 2 is characterized in that, described metal cladding is to be made of the material that comprises teflon in the nickel.
3. mortor operated valve comprises: have it by contacting the valve body that passes through flow that the needle that leaves is adjusted fluid with valve seat in the valve chamber; Be fixed on the housing on the valve body; Be installed in the housing, the rotation that stator is produced magnetic field formation changes into the rotor that needle contacts, leaves valve seat; And comprise the retainer of placing restrictions on rotor-position that stop rod and slip ring are formed; Its outer being contained on the housing drives the stator of described rotor rotation, it is characterized in that above-mentioned slip ring is configured in spring guide rail and the stop rod slidably, and simultaneously, at least one surface is gone up and formed the coating that is made of fluororesin in slip ring and the stop rod.
4. mortor operated valve according to claim 3 is characterized in that described coating is to be made of polytetrafluoroethylmaterial material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101134189A CN103216663A (en) | 2013-03-20 | 2013-03-20 | Electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101134189A CN103216663A (en) | 2013-03-20 | 2013-03-20 | Electric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103216663A true CN103216663A (en) | 2013-07-24 |
Family
ID=48814713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101134189A Pending CN103216663A (en) | 2013-03-20 | 2013-03-20 | Electric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103216663A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132149A (en) * | 2013-05-02 | 2014-11-05 | 浙江三花股份有限公司 | Electric valve |
| CN107956887A (en) * | 2017-12-22 | 2018-04-24 | 浙江中宝自控元件有限公司 | A kind of locking plate coordinates close motor-driven valve |
| CN108692042A (en) * | 2017-04-12 | 2018-10-23 | 杭州三花研究院有限公司 | Electric expansion valve |
| CN109424750A (en) * | 2017-08-28 | 2019-03-05 | 浙江盾安机械有限公司 | A kind of electric expansion valve and its assembling scheme |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219317A (en) * | 1995-02-09 | 1996-08-30 | Fuji Koki Seisakusho:Kk | Electric operated valve |
| CN2542895Y (en) * | 2001-12-07 | 2003-04-02 | 王希平 | Electric control leakless straight-through valve |
| CN1576663A (en) * | 2003-07-25 | 2005-02-09 | 株式会社不二工机 | Electric valve |
| CN2846913Y (en) * | 2005-12-08 | 2006-12-13 | 浙江中宝自控元件有限公司 | Electronic expansion valve |
| CN101526150A (en) * | 2008-03-04 | 2009-09-09 | 浙江三花股份有限公司 | Electronic expansion valve and method for processing same |
-
2013
- 2013-03-20 CN CN2013101134189A patent/CN103216663A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219317A (en) * | 1995-02-09 | 1996-08-30 | Fuji Koki Seisakusho:Kk | Electric operated valve |
| CN2542895Y (en) * | 2001-12-07 | 2003-04-02 | 王希平 | Electric control leakless straight-through valve |
| CN1576663A (en) * | 2003-07-25 | 2005-02-09 | 株式会社不二工机 | Electric valve |
| CN2846913Y (en) * | 2005-12-08 | 2006-12-13 | 浙江中宝自控元件有限公司 | Electronic expansion valve |
| CN101526150A (en) * | 2008-03-04 | 2009-09-09 | 浙江三花股份有限公司 | Electronic expansion valve and method for processing same |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132149A (en) * | 2013-05-02 | 2014-11-05 | 浙江三花股份有限公司 | Electric valve |
| CN104132149B (en) * | 2013-05-02 | 2017-09-01 | 浙江三花智能控制股份有限公司 | A kind of motor-driven valve |
| CN108692042A (en) * | 2017-04-12 | 2018-10-23 | 杭州三花研究院有限公司 | Electric expansion valve |
| CN109424750A (en) * | 2017-08-28 | 2019-03-05 | 浙江盾安机械有限公司 | A kind of electric expansion valve and its assembling scheme |
| CN109424750B (en) * | 2017-08-28 | 2022-06-17 | 浙江盾安机械有限公司 | Electronic expansion valve and assembling method thereof |
| CN107956887A (en) * | 2017-12-22 | 2018-04-24 | 浙江中宝自控元件有限公司 | A kind of locking plate coordinates close motor-driven valve |
| CN107956887B (en) * | 2017-12-22 | 2023-05-16 | 浙江中宝自控元件有限公司 | Electric valve with tightly matched stop piece |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130724 |
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| WD01 | Invention patent application deemed withdrawn after publication |