CN2634210Y - Valve needle alignment device of electronic expansion valve - Google Patents
Valve needle alignment device of electronic expansion valve Download PDFInfo
- Publication number
- CN2634210Y CN2634210Y CN 03255458 CN03255458U CN2634210Y CN 2634210 Y CN2634210 Y CN 2634210Y CN 03255458 CN03255458 CN 03255458 CN 03255458 U CN03255458 U CN 03255458U CN 2634210 Y CN2634210 Y CN 2634210Y
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- CN
- China
- Prior art keywords
- needle
- valve
- guide hole
- guide
- expansion valve
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- 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.)
- Expired - Fee Related
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- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 241001343274 Dichrostachys spicata Species 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
A valve needle alignment device of an electronic expansion valve belongs to the manufacturing technical field of electronic expansion valves, and mainly comprises a valve body (1) with a valve port (10) and a guide hole (11), and a valve needle (2) with a guide rod (12) arranged in the guide hole; an external thread guide sleeve (8) arranged outside the guide rod, an internal thread sleeve (4) with a spring (5), a valve needle bush (3) and a gasket (7) and the like. The length of the guide hole, the matching thread of the external thread guide sleeve and the internal thread sleeve is 5-10 mm. The utility model discloses a directly set up the structural style of needle guide hole on the valve body to increased guide hole, external screw thread guide pin bushing and internal thread bush's cooperation thread length, reasonable in design, simple structure is compact, can prevent effectively because the electromagnet rotates the deflection and the shake phenomenon that the in-process produced, guarantees the needle to the accurate location of valve port, improves sealed effect. And the number of parts is reduced, the influence of assembly errors is avoided, the assembly procedures are reduced, and the manufacturing precision of the parts and the production cost of products are effectively reduced.
Description
Technical field
The utility model relates to a kind of electric expansion valve needle aligning device, belongs to the manufacturing technology field of electric expansion valve.
Background technique
Along with being extensive use of of frequency converting air conditioner and residential central air-, to its throttle element---the research of electric expansion valve is deep day by day, in the seal arrangement of existing electric expansion valve, on the manufacturing process of needle, valve body, mostly adopt structural type as shown in Figure 1, promptly valve component and needle assembly cooperate, and needle 2 is packed in the needle lining 3, with being pressed in the outside thread guide pin bushing 8 after spring 5, pad 7 assemblings, constitute the needle assembly then; Inner screw sheath 4, moulding 6 are pressed into after injection moulding in the valve body 1, constitute valve component.From structural analysis, there is following defective in the said structure form:
1, needle and the targeting part in the outside thread guide pin bushing are shorter, and it is also shorter that screw thread is paid cooperation.Generally in whole process work, needle length is 10-15mm, and guiding length is 3-4mm, reach is 2.9mm, and the needle group directly is in the same place with the electromagnet plastic packaging, because the inhomogeneity of electromagnet when magnetizing, when rotating, deflect easily and shake, thereby can influence sealing;
2, also owing to the inhomogeneity that magnetizes of electromagnet, in opening the valve regulation process, flow has certain wave phenomenon;
3, owing to be that interior outer nut is leading, needle is in quick condition, and sealing station also can influence sealing effect in continuous variation;
4, needle, parts such as needle lining are very little, and the required precision of processing fit dimension is very high, makes the machining difficulty;
5, because needle, needle is the group body of two-part assembling separately, and assembly process unavoidably can produce cumulative error and part deformation, increases the inconsistency of needle and valve seal.
Summary of the invention
The purpose of this utility model provides a kind of reasonable in design, and compact structure can rationally reduce the quantity of part, effectively reduces the electric expansion valve needle aligning device of component accuracy of manufacturing and production cost.
The utility model is an electric expansion valve needle aligning device, comprises the valve body of being with valve port, it is characterized in that offering on the valve body guide hole, and guide hole is built-in with the needle of band guide rod; Guide rod is provided with the inner screw sheath of outside thread guide pin bushing and band spring outward, and the top of described outside thread guide pin bushing embeds in the valve body.During work,, after inner screw sheath and outside thread guide pin bushing screw, drive needle and move up and down, realize closing or opening valve port along guide hole along with the rotation of inner screw sheath.
Described guide rod bottom also can be provided with the pad that is fixed on the inner screw sheath.
Also can be provided with the needle lining between described spring and the inner screw sheath.
The length of described needle and guide rod can be 25-35mm.The length of described guide hole can be 5-10mm.The matching thread length of described outside thread guide pin bushing and inner screw sheath can be 5-10mm.
The utility model adopts the structural type of directly offering the needle guide hole on valve body, and increased the matching thread length of needle, guide hole, outside thread guide pin bushing and inner screw sheath, reasonable in design, simple and compact for structure, can prevent effectively because deflection and the jitter phenomenon that produces in the electromagnet rotation process, guarantee the accurate location of needle, improve sealing effect valve port.And reduced number of components and parts, avoided the influence of assembly error, reduced the operation of assembling, effectively reduced the accuracy of manufacturing and the production cost of products of component.
Description of drawings
Fig. 1 is the overall structure sectional view of existing electric expansion valve needle aligning device;
Fig. 2 is an overall structure sectional view of the present utility model.
Among the figure: 1 is valve body, and 2 is needle, and 3 is the needle lining, and 4 is inner screw sheath, and 5 is spring, and 6 is moulding, and 7 is pad, and 8 is the outside thread guide pin bushing, and 9 is guide rod, and 10 is valve port, and 11 is guide hole, and 12 is guide rod.
Embodiment
The utility model places the needle 2 of band guide rod 12 in the guide hole 11 mainly by the valve body 1 of band valve port 10 and guide hole 11; Place outside thread guide pin bushing 8 and the formations such as inner screw sheath 4 of being with spring 5, needle lining 3, pad 7 outside the guide rod 12.The top of outside thread guide pin bushing 8 embeds in the valve body 1.The total length of needle 2 and guide rod 12 is 3-4mm, and the length of guide hole 11 is 5-10mm, and the matching thread length of outside thread guide pin bushing 8 and inner screw sheath 4 is 3-4mm.
During work, inner screw sheath 4 is along with the rotation of the electromagnet that is attached thereto, after inner screw sheath 4 and outside thread guide pin bushing 8 screw, driving needle 2 moves up and down along guide hole 11, realization is closed valve port 10, open, regulate the guiding centering of needle 2 in valve body guide hole 11, be positioned at exactly on the valve port 10 and seal, because guide hole 11 guiding distances are longer, it is also long that screw thread is paid cooperation in addition, therefore, make the running of electromagnet comparatively steady, so fluctuation is less in Flow-rate adjustment, accurate in locating makes the internal leakage of needle when screw-in valve port 10 closes valve reach minimum.
Claims (6)
1, a kind of electric expansion valve needle aligning device comprises the valve body (1) of being with valve port (10), it is characterized in that offering on the valve body (1) guide hole (11), and guide hole (11) is built-in with the needle (2) of band guide rod (12); The outer inner screw sheath (4) that is provided with outside thread guide pin bushing (8) and band spring (5) of guide rod (12), the top of described outside thread guide pin bushing (8) embeds in the valve body (1).
2, by the described electric expansion valve needle of claim 1 aligning device, it is characterized in that described guide rod (12) bottom also is provided with the pad (7) that is fixed on the inner screw sheath (4).
3, by claim 1 or 2 described electric expansion valve needle aligning devices, it is characterized in that also being provided with needle lining (3) between described spring (5) and the inner screw sheath (4).
4, by the described electric expansion valve needle of claim 1 aligning device, it is characterized in that the length of described needle (2) and guide rod (12) is 25-35mm.
5, by the described electric expansion valve needle of claim 1 aligning device, it is characterized in that the length of described guide hole (11) can be 5-10mm.
6, by claim 1 or 2 described electric expansion valve needle aligning devices, it is characterized in that the matching thread length of described outside thread guide pin bushing (8) and inner screw sheath (4) is 5-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03255458 CN2634210Y (en) | 2003-07-10 | 2003-07-10 | Valve needle alignment device of electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03255458 CN2634210Y (en) | 2003-07-10 | 2003-07-10 | Valve needle alignment device of electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2634210Y true CN2634210Y (en) | 2004-08-18 |
Family
ID=34294963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03255458 Expired - Fee Related CN2634210Y (en) | 2003-07-10 | 2003-07-10 | Valve needle alignment device of electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2634210Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348897C (en) * | 2004-12-14 | 2007-11-14 | 浙江三花制冷集团有限公司 | Electronic expansion valve |
| CN101261110B (en) * | 2008-04-17 | 2010-08-04 | 中国第一冶金建设有限责任公司 | Method for accurately aligning concentricity of hole and rod using surveying pin |
| CN112648389A (en) * | 2020-12-24 | 2021-04-13 | 珠海市瑞信精密科技有限公司 | Fluid flow linear control valve |
-
2003
- 2003-07-10 CN CN 03255458 patent/CN2634210Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348897C (en) * | 2004-12-14 | 2007-11-14 | 浙江三花制冷集团有限公司 | Electronic expansion valve |
| CN101261110B (en) * | 2008-04-17 | 2010-08-04 | 中国第一冶金建设有限责任公司 | Method for accurately aligning concentricity of hole and rod using surveying pin |
| CN112648389A (en) * | 2020-12-24 | 2021-04-13 | 珠海市瑞信精密科技有限公司 | Fluid flow linear control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |