CN205135969U - Control valve of variable -displacement compressor - Google Patents
Control valve of variable -displacement compressor Download PDFInfo
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- CN205135969U CN205135969U CN201520814045.2U CN201520814045U CN205135969U CN 205135969 U CN205135969 U CN 205135969U CN 201520814045 U CN201520814045 U CN 201520814045U CN 205135969 U CN205135969 U CN 205135969U
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- valve
- valve rod
- iron core
- valve body
- rod
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Abstract
The utility model discloses a control valve of variable -displacement compressor, characterized by include electromagnetic induction part, valve port subtotal pressure sensing part, and wherein the valve rod 5 that moves in iron core 1 and the valve port part in the electromagnetic induction part meets, moves iron core 1 and decides iron core 3 and meet, move iron core 1 and meet with circle subassembly 2, and the bellows 9 in valve rod 5 and the pressure sensing part meets, and 8 valve rods 5 and valve bodies are D sealing washers 10, and the sealing member is installed to the ditch inslot of valve rod 5 or valve body 8. The advantage: reduce valve rod and the leakage of valve body cooperation department pd to PS, reduce the influence of impurity to valve rod. Can suitably reduce the cooperation required precision of valve rod and valve body in addition, improve the manufacturing qualification rate of two parts, guarantee the uniformity of part.
Description
Technical field
The utility model relates to a kind of compressor with variable displacement control valve for car air conditioner.
Background technique
The existing externally controlled type motor-operated control valve (patent No. CN03104307.0) for Automotive Variable Displacement Compressor, main structure (see accompanying drawing 1) comprising: coil component 1, dynamic iron core 2, housing 3, Returnning spring 4, fixed core 5, push rod 6, valve body 7, coupling sleeve 8, spool 9, flange 10 and pressure element 11, can elongate or shorten when bellows component experiences the pressure change from compressor air suction mouth (Ps), and displacement and power are passed to valve rod, meanwhile, if electromagnetic coil receives the current signal generation electromagnetic attracting force electromagnetic core promotion valve rod sent from air-conditioning system external control part and moves downward displacement force interaction formation equilibrant and displacement amount of producing with bellows component, the direction of valve rod axial displacement and displacement amount determine the aperture variable quantity of valve port, thus the throughput regulating exhaust outlet of compressor (Pd) and wave between case (Pc), the refrigeration discharge capacity of compressor is changed.
Because valve rod and valve body are a kind of Spielpassung, there is the minim channel of air-flow between Pd and Ps, the gas of Pd chamber high pressure can leak to the Ps chamber of low pressure; In air-conditioning system in cyclic process, due to wearing and tearing or other factors, unavoidably there is tiny granule foreign; These particles can with the minim channel of gas between Pd and Ps (see Fig. 3) leaked; and be detained in the channel, retardation is produced to the motion of valve rod, causes electrically-controlled valve cannot the aperture of precision control valve mouth; serious meeting causes valve rod stuck, and electrically-controlled valve lost efficacy.
Summary of the invention
The purpose of this utility model is intended to the series of problems overcome existing for prior art, increases elastic component and intercepts impurity, and the impact on electrically-controlled valve performance such as reduction granule foreign, improves the control accuracy of valve port flow, reduce the wearing and tearing of valve rod and valve body fitting surface.Reduce the difficulty of processing of part simultaneously, ensure the conformity of part.
Technical solution of the present utility model: compressor with variable displacement control valve, its structure comprises electromagnetic induction part, valve port part and pressure-sensitive part, dynamic iron core 1 wherein in electromagnetic induction part connects with the valve rod 5 in valve port part, dynamic iron core 1 connects with fixed core 3, dynamic iron core 1 connects with coil assembly 2, valve rod 5 connects with the bellows 9 in pressure-sensitive part, are D seal rings 10 between valve rod 5 and valve body 8, Sealing (all kinds of sealing means such as O type, Y type, sealing gasket) is installed in the groove of valve rod 5 or valve body 8.
Advantage of the present utility model: elastic component plasticity is strong, Pd pressure raises and elastic component is compressed, and cuts off the leakage way of air-flow, blocks the accumulation of granule foreign, the thorough catching phenomenon solving valve rod and cause because of impurity; Suitably the matching gap strengthened between valve body and valve rod reduces the wearing and tearing of movement parts simultaneously; Reduce the machining accuracy of valve rod valve body, parts machining process is more easily realized, ensure the conformity of part.
Accompanying drawing illustrates:
The structural representation of the compressor with variable displacement control valve of accompanying drawing 1 prior art.
Accompanying drawing 2 is main sectional structure charts of the utility model compressor with variable displacement control valve.
In figure 1 is iron core, and 2 is coils, and 3 is fixed cores, and 4,6,7,10 is A, B, C, D tetra-O RunddichtringOs, and 5 is valve rods, and 8 is valve bodies, and 9 is bellowss.
Accompanying drawing 3: compressor with variable displacement control valve inner Pd-Ps and the Pd-Ps passage figure of prior art.
Accompanying drawing 4: the utility model compressor with variable displacement control valve inner Pd-Ps and Pd-Pc passage figure.
Accompanying drawing 5: prior art and the utility model compressor with variable displacement control valve inner Pd-Ps discharge relation figure.
Embodiment
Contrast accompanying drawing 2, compressor with variable displacement control valve, its structure comprises electromagnetic induction part, valve port part and pressure-sensitive part, dynamic iron core 1 wherein in electromagnetic induction part connects with the valve rod 5 in valve port part, dynamic iron core 1 connects with fixed core 3, and dynamic iron core 1 connects with coil assembly 2, and valve rod 5 connects with the bellows 9 in pressure-sensitive part, are D seal rings 10 between valve rod 5 and valve body 8, Sealing (all kinds of sealing means such as O type, Y type, sealing gasket) is installed in the groove of valve rod 5 or valve body 8.
Sealing comprises A, B, C, D tetra-O RunddichtringOs.The external diameter of Sealing and internal diameter are interference fit or transition fit with valve body and valve rod respectively.
Described electromagnetic induction part comprises coil block 2 and dynamic iron core 1, fixed core 3, and described coil block 2 is for connecting external power supply, and energising makes to produce electromagnetic induction between fixed core, and the electromagnetic force of formation impels the action of dynamic iron core 1.The size of coil 2 electrical current directly affects the size of electromagnetic force.
Described valve port part is made up of valve rod 5 and valve body 8, and when the dynamic iron core 1 of coil 2 energising promotion down moves, valve rod 5 down moves under the promotion of dynamic iron core 1, thus reduces valve port, regulates Pd chamber to the flow in Pc chamber.In the process, the pressure element bellows 9 in pressure-sensitive part is compressed, and produces reaction force in valve rod 5, forms equilibrium of forces with Ps chamber to the pressure of bellows 9 and electromagnetic force etc.
In the working procedure of above electrically-controlled valve, valve rod 5 is most important with valve body 8 section of cooperation, especially the Spielpassung that existing design adopts, the too small meeting of valve rod and valve body gap causes stem movement not smooth, increase the weight of wearing and tearing, excesssive gap causes to leak and causes the granule foreign in gas to be deposited in gap, also has very large interference to the valve rod work of electrically-controlled valve.
In the stroke range of valve rod, valve rod 5 adds O RunddichtringO 10 with the work section of cooperation of valve body 8, when valve rod 5 moves between high-low limit position, O RunddichtringO 10 is positioned at the section of cooperation of valve rod and valve body all the time, when during Pd (exhaust pressure) enters valve rod 5 and the gap of valve body 8, due to the interference fit that external diameter and valve body 8 endoporus of O RunddichtringO 10 are formed, cut off Pd chamber (exhaust pressure) to enter in Ps chamber (pressure of inspiration(Pi)), thus avoided impurity to enter inner space and cause the clamping stagnation of valve rod 5, the phenomenon (see Fig. 4) such as dumb.Due to the interference fit that external diameter and valve body 8 endoporus of O RunddichtringO 10 are formed, can the flow (see figure 5) of effective control Pd to Ps, the matching gap of valve body 8 can suitably be relaxed for this reason, the precision of two part matching surfaces can reduce, reduce the difficulty of processing of two parts, improve the conformity of part processing.
Claims (3)
1. compressor with variable displacement control valve, it is characterized in that comprising electromagnetic induction part, valve port part and pressure-sensitive part, dynamic iron core wherein in electromagnetic induction part connects with the valve rod in valve port part, dynamic iron core connects with fixed core, dynamic iron core connects with coil assembly, valve rod connects with the bellows in pressure-sensitive part, is D seal ring, is provided with Sealing in the groove of valve rod or valve body between valve rod and valve.
2. compressor with variable displacement control valve as claimed in claim 1, is characterized in that described Sealing comprises A, B, C, D tetra-O RunddichtringOs.
3. compressor with variable displacement control valve as claimed in claim 1, is characterized in that the external diameter of Sealing and internal diameter are interference fit or transition fit with valve body and valve rod respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520814045.2U CN205135969U (en) | 2015-10-21 | 2015-10-21 | Control valve of variable -displacement compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520814045.2U CN205135969U (en) | 2015-10-21 | 2015-10-21 | Control valve of variable -displacement compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205135969U true CN205135969U (en) | 2016-04-06 |
Family
ID=55621768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520814045.2U Active CN205135969U (en) | 2015-10-21 | 2015-10-21 | Control valve of variable -displacement compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205135969U (en) |
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2015
- 2015-10-21 CN CN201520814045.2U patent/CN205135969U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |