CN202833173U - slide valve, slide valve adjusting mechanism and screw compressor - Google Patents
slide valve, slide valve adjusting mechanism and screw compressor Download PDFInfo
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- CN202833173U CN202833173U CN 201220276868 CN201220276868U CN202833173U CN 202833173 U CN202833173 U CN 202833173U CN 201220276868 CN201220276868 CN 201220276868 CN 201220276868 U CN201220276868 U CN 201220276868U CN 202833173 U CN202833173 U CN 202833173U
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- guiding valve
- hole
- slide valve
- movable pulley
- quiet
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- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 230000003068 static effect Effects 0.000 abstract 3
- 230000001276 controlling effect Effects 0.000 description 12
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model discloses a slide valve, the slide valve includes static slide valve and movable slide valve, static slide valve have with the first surface of slide valve surface complex, with the second surface of negative rotor complex and with the third surface of positive rotor complex, be provided with the through-hole that runs through axially on this static slide valve, and be provided with one or more first by-pass holes that communicate with the through-hole axially on the second surface, and/or be provided with one or more second by-pass holes that communicate with the through-hole axially on the third surface; the movable spool is axially movably installed in the through hole of the stationary spool for selectively opening and closing the first bypass hole and/or the second bypass hole. The utility model provides a slide valve, because quiet slide valve is motionless, and move the slide valve and do not directly contact with the compressor rotor, thoroughly solve the scotch phenomenon of slide valve and rotor to the reliability of compressor has been improved. And simultaneously, the utility model also discloses a slide valve adjustment mechanism and helical-lobe compressor that have this slide valve.
Description
Technical field
The utility model relates to helical-lobe compressor, particularly relates to a kind of guiding valve, has the guiding valve controlling mechanism of this guiding valve, has the helical-lobe compressor of this guiding valve controlling mechanism.
Background technique
Guiding valve is a kind of structural element that is used for regulating displacement in the helical-lobe compressor.As shown in Figure 1, guiding valve 100 is installed in the piston chamber of body 400 and is positioned at the intersection point place of yin, yang rotor two circles, can move around in the direction with cylinder-bore axis equality, rotation along with the yin, yang rotor, the pressure of compressed gas improves gradually along the direction of rotor, and along with the slip of guiding valve, the housing of guiding valve and compressor separates, some gas just can fall by the opening bypass, thereby reaches the purpose of capacity regulating.Yet; because guiding valve slides at compressor housing; rotor slides at the guiding valve fitting surface; guiding valve just has relative motion with screw rod like this; the scratch of guiding valve appears unusually can causing in the process of assembling and processing; like this processing and assembling are proposed very large requirement, the reliability of compressor operating reduces.
Summary of the invention
For above-mentioned prior art present situation, first technical problem to be solved in the utility model is, provides a kind of and can avoid abrasive guiding valve, to improve the reliability of helical-lobe compressor.
Second technical problem to be solved in the utility model is, a kind of guiding valve controlling mechanism that uses above-mentioned guiding valve is provided, to improve the reliability of guiding valve controlling mechanism.
The 3rd technical problem to be solved in the utility model is, a kind of helical-lobe compressor that uses above-mentioned guiding valve controlling mechanism is provided.
The technological scheme that above-mentioned first technical problem that solves the utility model adopts is: a kind of guiding valve, it has suction end and exhaust end, described guiding valve comprises quiet guiding valve and movable pulley, described quiet guiding valve has the first surface with the piston chamber surface engagement, the second surface that cooperates with female rotor and the 3rd surface that cooperates with male rotor, be provided with the through hole that axially runs through at this quiet guiding valve, and on described second surface, be provided with vertically the first by-pass hole that one or more and described through hole is communicated with, and/or on described the 3rd surface, be provided with vertically the second by-pass hole that one or more and described through hole is communicated with; Described movable pulley can be installed in the through hole of described quiet guiding valve with axial motion, is used for optionally opening and closing described the first by-pass hole and/or described the second by-pass hole, and is provided with the sliding valve hole that is connected with slide valve lever at the exhaust end of this movable pulley.
Among embodiment, described the first by-pass hole is the bar hole that extends along described female rotor Hand of spiral therein; And/or described the second by-pass hole is the bar hole that extends along described male rotor Hand of spiral.
Among embodiment, from suction end to exhaust end, the spacing between described the first by-pass hole and/or described the second by-pass hole increases gradually therein.
Among embodiment, from suction end to exhaust end, the width of described the first by-pass hole and/or described the second by-pass hole reduces gradually therein.
Among embodiment, the through hole of described movable pulley and described quiet guiding valve is Spielpassung therein.
Among embodiment, described movable pulley comprises movable pulley main body and the joint that connects successively from suction end to exhaust end therein, and described movable pulley main body cooperates with the through hole of described quiet guiding valve, is provided with the sliding valve hole that is connected for slide valve lever on the described joint.
Among embodiment, the through hole of described quiet guiding valve is circular therein, and the cross section of described movable pulley main body be circle, and the cross section of described joint is rectangle.
The technological scheme that above-mentioned second technical problem that solve the utility model adopts is: a kind of guiding valve controlling mechanism, comprise guiding valve, slide valve lever and oily piston, described slide valve lever one end is connected with described oily piston, and the other end is connected with described guiding valve, and described guiding valve is above-mentioned guiding valve.
The utility model solves above-mentioned the 3rd technological scheme that technical problem adopts: a kind of helical-lobe compressor, it comprises body, be provided with piston chamber at this body, also comprise above-mentioned guiding valve controlling mechanism, described quiet guiding valve is fixedly mounted in the described piston chamber.
Compared with prior art, guiding valve provided by the utility model, guiding valve controlling mechanism and helical-lobe compressor, because guiding valve is comprised of quiet guiding valve and movable pulley, the by-pass hole that offers through hole on the quiet guiding valve and be communicated with through hole, movable pulley can be installed in the quiet guiding valve with axial motion, when movable pulley moves, optionally by-pass hole is opened and closed, can regulate like this capacity of compressor.Because quiet guiding valve is motionless, and movable pulley does not directly contact with compressor drum, thoroughly solves the abrasive phenomenon of guiding valve and rotor, thereby has improved the reliability of compressor.
Description of drawings
Fig. 1 is the structural representation of guiding valve in the prior art;
Fig. 2 is the structural representation of the guiding valve among one of them embodiment of the utility model;
Fig. 3 is the perspective view of the quiet guiding valve among Fig. 2;
Fig. 4 be among Fig. 2 quiet guiding valve look up structural representation;
Fig. 5 is the perspective view of the movable pulley among Fig. 2;
Fig. 6 is the assembling schematic diagram of guiding valve shown in Figure 2 and slide valve lever and oily piston;
Fig. 7 is the worm's eye view of Fig. 6.
Among above each figure, 100-guiding valve, the quiet guiding valve of 110-, the 111-first surface, 112-second surface, 112a-the first by-pass hole, 113-the 3rd surface, 113a-the second by-pass hole, 114-through hole, the 120-movable pulley, 121-movable pulley main body, 122-joint, the 122a-sliding valve hole, 200-oil piston, 300-slide valve lever, 400-body.
Embodiment
Also in conjunction with the embodiments the utility model is elaborated below with reference to accompanying drawing.Need to prove, in the situation that do not conflict, below feature among each embodiment and the embodiment can mutually make up.
Among one of them embodiment of the utility model, provide a kind of guiding valve, as shown in Figure 2, described guiding valve 100 comprises quiet guiding valve 110 and movable pulley 120, and quiet guiding valve 110 is stationary components, and quiet guiding valve 110 and compressor drum cooperate, and plays sealing; Movable pulley 120 is moving elements, and movable pulley 120 can move reciprocatingly in 110 li in quiet guiding valve.Because movable pulley 120 does not directly contact with compressor drum, has thoroughly solved the abrasive phenomenon of compressor capacity adjusting valve and rotor, thereby improve the reliability of compressor.The below describes the structure of quiet guiding valve 110 and movable pulley 120 in detail.
As shown in Figures 3 and 4, the quiet guiding valve 110 of the present embodiment has and the first surface 111 of piston chamber surface engagement, the second surface 112 that cooperates with female rotor and the 3rd surface 113 that cooperates with male rotor, be provided with the through hole 114 that axially runs through at this quiet guiding valve 110, and on described second surface 112, be provided with vertically the first by-pass hole 112a that a plurality of and described through hole 114 is communicated with, and on described the 3rd surface 113, be provided with vertically the second by-pass hole 113a that one or more and described through hole 114 is communicated with.The first by-pass hole 112a and the second by-pass hole 113a play bypass action to the male rotor of compressor and the gas of female rotor compression respectively, when oily piston promotes movable pulley 120 outward movment, the first by-pass hole 112a and the second by-pass hole 113a will open, the pressurized gas of male rotor and female rotor will be got back to the air aspiration cavity of compressor, the air displacement of compressor will reduce, thereby plays the effect of energy adjustment.A plurality of the first by-pass hole 112a can control compressor with a plurality of the second by-pass hole 113a and realize compressor compresses gas in different position realization bypass at diverse location, thereby realize the function that compressor stepless is regulated.
Preferably, described the first by-pass hole 112a is the bar hole that extends along described female rotor Hand of spiral; Described the second by-pass hole 113a is the bar hole that extends along described male rotor Hand of spiral.
Because the rising of pressure during along with screw compression, pressure reduction between the by-pass hole can increase gradually, can cause like this leakage rate of compressor to increase gradually, in order to guarantee the Energy Efficiency Ratio of compressor operating, preferably, from the suction end to the exhaust end (be among Fig. 4 from the left end to the right-hand member), the gap between the first by-pass hole 112a and the second by-pass hole 113a increases gradually, and width reduces gradually.
As shown in Figure 5, therein among embodiment, described movable pulley 120 comprises movable pulley main body 121 and the joint 122 that connects successively from suction end to exhaust end, described movable pulley main body 121 cooperates with the through hole 114 of described quiet guiding valve 110, is provided with described sliding valve hole 122a on the described joint 122.121 need of movable pulley main body get final product less times greater than the length of all first by-pass hole 112a and all the second by-pass hole 113a, can alleviate like this weight of guiding valve.Preferably, the through hole 114 of described quiet guiding valve 110 is circular hole, and the cross section of described movable pulley main body 121 is circular, and the cross section of described joint 122 is rectangle.
In another embodiment of the utility model, a kind of guiding valve controlling mechanism is provided, such as Figure 6 and Figure 7, the guiding valve controlling mechanism comprises guiding valve 100, slide valve lever 300 and the oily piston 200 of above-described embodiment, quiet guiding valve 110 is assemblied in the piston chamber of body 400, movable pulley 120 is installed in the quiet guiding valve 110, and an end of itself and slide valve lever 300 is threaded connection, and the other end of slide valve lever 300 is connected with described oily piston 200.Oil piston 200 is by 100 to-and-fro motion of slide valve lever 300 band movable pulleys.
In another embodiment of the utility model, a kind of helical-lobe compressor is provided, comprise the described guiding valve controlling mechanism of body 400 and above-described embodiment.
The above embodiment has only expressed several mode of execution of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (9)
1. guiding valve, it has suction end and exhaust end, it is characterized in that, described guiding valve comprises quiet guiding valve and movable pulley, described quiet guiding valve has and the first surface of piston chamber surface engagement, the second surface that cooperates with female rotor and the 3rd surface that cooperates with male rotor, be provided with the through hole that axially runs through at this quiet guiding valve, and on described second surface, be provided with vertically the first by-pass hole that one or more and described through hole is communicated with, and/or on described the 3rd surface, be provided with vertically the second by-pass hole that one or more and described through hole is communicated with; Described movable pulley can be installed in the through hole of described quiet guiding valve with axial motion, is used for optionally opening and closing described the first by-pass hole and/or described the second by-pass hole.
2. guiding valve according to claim 1 is characterized in that, described the first by-pass hole is the bar hole that extends along described female rotor Hand of spiral; And/or described the second by-pass hole is the bar hole that extends along described male rotor Hand of spiral.
3. guiding valve according to claim 2 is characterized in that, from suction end to exhaust end, the spacing between described the first by-pass hole and/or described the second by-pass hole increases gradually.
4. guiding valve according to claim 2 is characterized in that, from suction end to exhaust end, the width of described the first by-pass hole and/or described the second by-pass hole reduces gradually.
5. guiding valve according to claim 1 is characterized in that, the through hole of described movable pulley and described quiet guiding valve is Spielpassung.
6. the described guiding valve of any one in 5 according to claim 1, it is characterized in that, described movable pulley comprises movable pulley main body and the joint that connects successively from suction end to exhaust end, described movable pulley main body cooperates with the through hole of described quiet guiding valve, is provided with the sliding valve hole that is connected for slide valve lever on the described joint.
7. guiding valve according to claim 6 is characterized in that, the through hole of described quiet guiding valve is circular, and the cross section of described movable pulley main body is circular, and the cross section of described joint is rectangle.
8. a guiding valve controlling mechanism comprises guiding valve, slide valve lever and oily piston, and described slide valve lever one end is connected with described oily piston, and the other end is connected with described guiding valve, it is characterized in that, described guiding valve is such as the described guiding valve of any one in the claim 1 to 7.
9. helical-lobe compressor, it comprises body, is provided with piston chamber at this body, it is characterized in that, also comprises guiding valve controlling mechanism as claimed in claim 8, described quiet guiding valve is fixedly mounted in the described piston chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220276868 CN202833173U (en) | 2012-06-12 | 2012-06-12 | slide valve, slide valve adjusting mechanism and screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220276868 CN202833173U (en) | 2012-06-12 | 2012-06-12 | slide valve, slide valve adjusting mechanism and screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833173U true CN202833173U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220276868 Expired - Lifetime CN202833173U (en) | 2012-06-12 | 2012-06-12 | slide valve, slide valve adjusting mechanism and screw compressor |
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| Country | Link |
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| CN (1) | CN202833173U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486037A (en) * | 2012-06-12 | 2014-01-01 | 珠海格力电器股份有限公司 | Slide valve, slide valve adjusting mechanism, screw compressor and capacity adjusting method thereof |
| EP3133288A4 (en) * | 2014-04-18 | 2017-11-01 | Johnson Controls-Hitachi Air Conditioning Technology (Hong Kong) Limited | Screw compressor |
| CN107740769A (en) * | 2017-08-30 | 2018-02-27 | 珠海格力电器股份有限公司 | Variable frequency screw compressor and air conditioner |
-
2012
- 2012-06-12 CN CN 201220276868 patent/CN202833173U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486037A (en) * | 2012-06-12 | 2014-01-01 | 珠海格力电器股份有限公司 | Slide valve, slide valve adjusting mechanism, screw compressor and capacity adjusting method thereof |
| CN103486037B (en) * | 2012-06-12 | 2016-07-20 | 珠海格力电器股份有限公司 | Slide valve, slide valve adjusting mechanism, screw compressor and capacity adjusting method thereof |
| EP3133288A4 (en) * | 2014-04-18 | 2017-11-01 | Johnson Controls-Hitachi Air Conditioning Technology (Hong Kong) Limited | Screw compressor |
| CN107740769A (en) * | 2017-08-30 | 2018-02-27 | 珠海格力电器股份有限公司 | Variable frequency screw compressor and air conditioner |
| WO2019041698A1 (en) * | 2017-08-30 | 2019-03-07 | 格力电器（武汉）有限公司 | Screw compressor and air conditioner |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
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| CX01 | Expiry of patent term |