CN201297424Y - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN201297424Y CN201297424Y CNU200820132647XU CN200820132647U CN201297424Y CN 201297424 Y CN201297424 Y CN 201297424Y CN U200820132647X U CNU200820132647X U CN U200820132647XU CN 200820132647 U CN200820132647 U CN 200820132647U CN 201297424 Y CN201297424 Y CN 201297424Y
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- CN
- China
- Prior art keywords
- expansion valve
- nested
- electric expansion
- screw rod
- magnet rotor
- 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.)
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses an electronic expansion valve which comprises a magnetic rotor and a screw bolt. The electronic expansion valve is characterized in that the magnetic rotor is fixedly connected with the screw bolt through a nesting; and the nesting is fixedly connected with the rotor through molding. The nesting and the screw bolt are matched through concavo-convex parts and are fixedly connected through argon-arc welding or laser welding. The connecting structure can avoid the axial deviation of the screw bolt in the processing process.
Description
Technical field
The utility model relates to electric expansion valve, relates more specifically to the linkage structure of the screw rod and the magnet rotor of expansion valve.
Background technique
Electric expansion valve is by the rotor rotation of pulse input power supply control step motor, and rotor places epitrochanterian needle to do axial motion by the screw thread transmission is feasible, thereby plays the flow effect of control valve.Present magnet rotor and screw rod all are connected in one by injection moulding processing, and injection moulding tonnage and temperature are higher, influence to screw flight coaxality and fit dimension is very big, and that coaxiality deviation directly can cause between rotor and valve body is stuck, makes the regulating action of valve body lose efficacy.Therefore, this Placement has a strong impact on the performance and the yield rate of product.In addition, the screw rod that is connected with rotor of the prior art all forms by smear metal, and this method waste material, efficient are low.
The model utility content
The utility model mainly is to solve in the existing expansion valve to connect the problem that causes the screw flight coaxiality deviation because of injection moulding.
The utility model solves the problems of the technologies described above by following technological scheme:
A kind of electric expansion valve comprises magnet rotor and screw rod, passes through nested fixedly connected between magnet rotor and the described screw rod.
In concrete mode of execution, magnet rotor be directly injection-moulded in nested on, perhaps be welded on nested on.
Preferably, magnet rotor and nested between adopt concavo-convex cooperation, for example, the outer circumferential face that connects magnet rotor in nested being used to is provided with at least one groove or projection.
Preferably, the joint between nested and the screw rod also cooperates by concavo-convex, for example, is provided with positioning shaft on screw rod, establishes receiving groove on nested respective end, the triangle that positioning shaft is corresponding with being shaped as of receiving groove, rectangle, other polygonals or irregularly shaped.Again for example, on nested, be provided with jut, on the respective end of screw rod, establish receiving hole.For making this connection more firm, between screw rod and receiving groove, adopt usually to be welded to connect, for example, argon arc welding or laser beam welding.
In another kind of mode of execution of the present utility model, nested is tubular structure, and the one end is provided with outside open Embedded Division, is used for being embedded into magnet rotor.As preferably, this Embedded Division has the shape that is similar to petal, matches with the magnet rotor with counter structure design.
Owing between the screw rod of electric expansion valve and rotor, be provided with nestedly, avoid the influence of the product precision that causes in the direct injection moulding course of working of screw rod and coaxality etc., promote the quality of rotor; Simultaneously, because this nested can forming by punch process is saved the work efficiency that material has improved product effectively.
Description of drawings
Fig. 1 is according to the screw rod of an embodiment's of the utility model electric expansion valve and magnet rotor linkage structure schematic representation;
Fig. 2 is the exploded view of Fig. 1;
Fig. 3 is the sectional view that dissects along A-A line among Fig. 2;
Fig. 4 is according to the screw rod of an embodiment's of the utility model electric expansion valve and magnet rotor linkage structure schematic representation;
Fig. 5 is the exploded view of Fig. 4;
Fig. 6 is according to the screw rod of an embodiment's of the utility model electric expansion valve and magnet rotor linkage structure schematic representation;
Fig. 7 is the exploded view of Fig. 6;
Fig. 8 is the plan view along the connecting tube shown in Fig. 7.
Embodiment
Describe the specific embodiment of the present invention in detail with specific embodiment below.
As illustrated in fig. 1 and 2, this rotor linkage structure comprises: magnet rotor 1, screw rod 3 and nested 2.Be directly injection-moulded in during the magnet rotor injection moulding on the metal nested 2, thereby improved magnet rotor 1 and nested 2 adhesive strength.Fig. 3 illustrates the sectional view of nested 2 groove part.These grooves 22 are evenly distributed on the nested side face.But the utility model is not limited thereto, and these grooves also can be other distribution forms, and it also can be a raised structures.
Be processed with a positioning shaft 32 on the screw rod 3 and cooperate with receiving groove 24 on nested, positioning shaft 32 can be corresponding triangle, rectangle, other polygonals or irregularly shaped with the shape of receiving groove 24.The cooperation of positioning shaft and receiving groove can prevent the motion of the axial and circumferential of the relative screw rod of magnet rotor.Mode by argon arc welding or laser bonding between positioning shaft 32 and the receiving groove 24 is connected.Because the heat of argon arc welding and laser beam welding is little and more concentrated, can not exert an influence to screw flight and coaxality; Avoid the influence of precision that the direct injection moulding of screw rod produces because of High Temperature High Pressure and coaxality etc., improved the quality of product greatly.
Fig. 4 and Fig. 5 illustrate a kind of modification of the foregoing description.Different with previous embodiment is, is provided with jut 26 on nested 2, establishes receiving hole 34 in the respective end of screw rod 3.The shape of jut 26 and receiving hole 34 can be corresponding triangle, rectangle, other polygonals or irregularly shaped.Jut 26 and the cooperation of receiving hole 34 can prevent the motion of the axial and circumferential of the relative screw rod of magnet rotor.Mode by argon arc welding or laser bonding between jut 26 and the receiving hole 34 connects.
Fig. 6 to 8 illustrates another kind of modification of the present utility model.Wherein, described nested be a tubular structure, the one end is provided with outwards open basic Embedded Division 28 for annular, is used for being embedded into described magnet rotor.As shown in Figure 8, Embedded Division 28 has the shape that is similar to petal, in other words, can have several rules or irregular breach 29 along annular.Can this tubular structure be connected in rotor 1 by injection moulding.Also can be with having suitable this tubular member of flexible made, and behind molded good rotor, realize connecting by installing, in being connected by argon arc welding or laser bonding realization and screw rod.Screw rod is provided with positioning shaft 32 equally, so that cooperate with tubular member.Because little the concentrating of the heat of argon arc welding and laser beam welding can not exert an influence to screw flight and coaxality; Avoid the influence of precision that the direct injection moulding of screw rod produces because of High Temperature High Pressure and coaxality etc., improved the quality of product greatly.
Although the utility model is illustrated with reference to accompanying drawing and preferred embodiment, but obviously, for a person skilled in the art, under the prerequisite that does not deviate from spirit and scope of the present utility model, can make some changes and variation to the utility model fully.Therefore, various change of the present utility model, the content that changes by appending claims and equivalent thereof contain.
Claims (11)
1. electric expansion valve, comprise magnet rotor (1) and screw rod (3), it is characterized in that, between described magnet rotor (1) and described screw rod (3), nested (2) are set, described magnet rotor be entrenched in described nested on, and described screw rod and described nested fixedlying connected.
2. electric expansion valve according to claim 1, wherein, described magnet rotor (1) is directly injection-moulded on described nested (2).
3. electric expansion valve according to claim 2, wherein, the outer circumferential face that is used to connect described magnet rotor in described nested (2) is provided with at least one groove (22) or projection.
4. electric expansion valve according to claim 1, wherein, described nested (2) cooperate by concavo-convex with joint between the described screw rod (3).
5. electric expansion valve according to claim 4, wherein, described nested (2) with concavo-convex cooperation between the described screw rod (3) are: be provided with positioning shaft (32) on described screw rod, establish receiving groove (24) in the respective end of described nested (2), be used to receive positioning shaft.
6. electric expansion valve according to claim 5, wherein, described positioning shaft (32) and receiving groove (24) be shaped as corresponding triangle, rectangle, other polygonals or irregularly shaped.
7. electric expansion valve according to claim 4, wherein, described nested (2) with concavo-convex cooperation between the described screw rod (3) are: be provided with jut (26) on described nested (2), establish receiving hole (34) in the respective end of described screw rod.
8. electric expansion valve according to claim 7, wherein, described jut (26) and receiving hole (34) be shaped as corresponding triangle, rectangle, other polygonals or irregularly shaped.
9. electric expansion valve according to claim 1, wherein, described nested be a tubular structure, the one end is provided with outside open annular Embedded Division (28), is used for being embedded into described magnet rotor.
10. electric expansion valve according to claim 9, wherein, described tubular structure embeds in the described magnet rotor by injection moulding.
11. according to each described electric expansion valve of claim 9 to 10, wherein, the Embedded Division of described tubular structure (28) is provided with some breach along circular periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820132647XU CN201297424Y (en) | 2008-08-13 | 2008-08-13 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820132647XU CN201297424Y (en) | 2008-08-13 | 2008-08-13 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297424Y true CN201297424Y (en) | 2009-08-26 |
Family
ID=41043404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820132647XU Ceased CN201297424Y (en) | 2008-08-13 | 2008-08-13 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297424Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213509A (en) * | 2011-06-02 | 2011-10-12 | 上海俊乐制冷自控元件有限公司 | Electronic expansion valve |
| CN102213322A (en) * | 2010-04-09 | 2011-10-12 | 浙江三花股份有限公司 | Magnetic rotor component and electronic expansion valve using magnetic rotor component |
| CN102263447A (en) * | 2010-05-28 | 2011-11-30 | 浙江三花股份有限公司 | Magnetic rotor component and electronic expansion valve using same |
| CN103225697A (en) * | 2012-01-31 | 2013-07-31 | 费希尔控制国际公司 | Anti-rotation assemblies for use with fluid valves |
-
2008
- 2008-08-13 CN CNU200820132647XU patent/CN201297424Y/en not_active Ceased
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213322A (en) * | 2010-04-09 | 2011-10-12 | 浙江三花股份有限公司 | Magnetic rotor component and electronic expansion valve using magnetic rotor component |
| CN102213322B (en) * | 2010-04-09 | 2014-12-03 | 浙江三花股份有限公司 | Magnetic rotor component and electronic expansion valve using magnetic rotor component |
| CN102263447A (en) * | 2010-05-28 | 2011-11-30 | 浙江三花股份有限公司 | Magnetic rotor component and electronic expansion valve using same |
| CN102213509A (en) * | 2011-06-02 | 2011-10-12 | 上海俊乐制冷自控元件有限公司 | Electronic expansion valve |
| CN102213509B (en) * | 2011-06-02 | 2017-04-12 | 上海俊乐制冷自控元件有限公司 | Electronic expansion valve |
| CN103225697A (en) * | 2012-01-31 | 2013-07-31 | 费希尔控制国际公司 | Anti-rotation assemblies for use with fluid valves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20120313 Decision number of declaring invalidation: 18220 Granted publication date: 20090826 |