CN103486037A - Slide valve, slide valve adjusting mechanism, screw compressor and capacity adjusting method thereof - Google Patents
Slide valve, slide valve adjusting mechanism, screw compressor and capacity adjusting method thereof Download PDFInfo
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- CN103486037A CN103486037A CN201210193436.8A CN201210193436A CN103486037A CN 103486037 A CN103486037 A CN 103486037A CN 201210193436 A CN201210193436 A CN 201210193436A CN 103486037 A CN103486037 A CN 103486037A
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- guiding valve
- hole
- movable pulley
- quiet
- pass hole
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- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001276 controlling effect Effects 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000003068 static effect Effects 0.000 abstract 3
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction 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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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses a slide valve, which comprises a static slide valve and a dynamic slide valve, wherein the static slide valve is provided with a first surface matched with the surface of a slide valve cavity, a second surface matched with a female rotor and a third surface matched with a male rotor; 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 static slide valve is not moved, and the dynamic slide valve is not directly contacted with the rotor of the compressor, so that the problem of abrasion of the slide valve and the rotor is thoroughly solved, and the reliability of the compressor is improved. Meanwhile, the invention also discloses a slide valve adjusting mechanism with the slide valve, a screw compressor and a screw compressor capacity adjusting method.
Description
Technical field
The present invention relates to helical-lobe compressor, particularly relate to a kind of guiding valve, there is the guiding valve controlling mechanism of this guiding valve, there is the helical-lobe compressor of this guiding valve controlling mechanism, and the screw compressor capacity regulating method.
Background technique
Guiding valve is a kind of structural element that is used for regulating displacement in helical-lobe compressor.As shown in Figure 1, guiding valve 100 is loaded in the piston chamber of body 400 and is positioned at the intersection point place of yin, yang rotor two circles, can on the direction with cylinder-bore axis equality, move around, 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 on compressor housing; rotor slides on the guiding valve fitting surface; guiding valve just has relative motion with screw rod like this; in the process of assembling and processing, occur extremely can causing the scratch of guiding valve; like this processing and assembling are proposed to 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 by this invention 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 by this invention 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 by this invention is, a kind of helical-lobe compressor that uses above-mentioned guiding valve controlling mechanism is provided.
The 4th technical problem to be solved by this invention be, a kind of screw compressor capacity regulating method is provided, and it can avoid abrading guiding valve, to improve the reliability of helical-lobe compressor.
The present invention solves the technological scheme that above-mentioned first technical problem adopts: 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 coordinated with female rotor and the 3rd surface coordinated with male rotor, be provided with the through hole axially run through on this quiet guiding valve, and be provided with vertically the first by-pass hole that one or more and described through hole is communicated with on described second surface, and/or be provided with vertically the second by-pass hole that one or more and described through hole is communicated with on described the 3rd surface, described movable pulley can be installed in the through hole of described quiet guiding valve with axial motion, for optionally opening and closing described the first by-pass hole and/or described the second by-pass hole.
In embodiment, described the first by-pass hole is the bar hole extended along described female rotor Hand of spiral therein; And/or described the second by-pass hole is the bar hole extended along described male rotor Hand of spiral.
In 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.
In 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.
In embodiment, the through hole of described movable pulley and described quiet guiding valve is Spielpassung therein.
In embodiment, described movable pulley comprises movable pulley main body and the joint connected successively from suction end to exhaust end therein, and described movable pulley main body coordinates with the through hole of described quiet guiding valve, is provided with the sliding valve hole for being connected with slide valve lever on described joint.
In 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 present invention solves the technological scheme that above-mentioned second technical problem adopt: 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 present invention solves above-mentioned the 3rd technological scheme that technical problem adopts: a kind of helical-lobe compressor, and it comprises body, on this body, is provided with piston chamber, also comprises above-mentioned guiding valve controlling mechanism, described quiet guiding valve is fixedly mounted in described piston chamber.
The present invention solves above-mentioned the 4th technological scheme that technical problem adopts: a kind of screw compressor capacity regulating method, and described helical-lobe compressor comprises piston chamber and guiding valve; Described method comprises the steps: described guiding valve is divided into to quiet guiding valve and two parts of movable pulley, described quiet guiding valve is fixedly mounted in described piston chamber, the first surface of described quiet guiding valve and piston chamber surface engagement, second surface coordinates with female rotor, the 3rd surface coordinates with male rotor, on described quiet guiding valve, the through hole axially run through is set, and the first by-pass hole that one or more and described through hole is communicated with is set vertically on described second surface, and/or on described the 3rd surface, the second by-pass hole that one or more and described through hole is communicated with is set vertically; Described movable pulley is loaded in the through hole of described quiet guiding valve, drives described movable pulley to-and-fro motion, optionally to open and close described the first by-pass hole and/or described the second by-pass hole.
Compared with prior art, guiding valve provided by the present invention, 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 quiet guiding valve and be communicated with through hole, movable pulley can be loaded in quiet guiding valve with axial motion, optionally by-pass hole is opened and closed when movable pulley moves, 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.
The accompanying drawing explanation
The structural representation that Fig. 1 is guiding valve in prior art;
The structural representation that Fig. 2 is the guiding valve in one of them embodiment of the present invention;
The perspective view that Fig. 3 is the quiet guiding valve in Fig. 2;
The structural representation of looking up that Fig. 4 is quiet guiding valve in Fig. 2;
The perspective view that Fig. 5 is the movable pulley in Fig. 2;
The assembling schematic diagram that Fig. 6 is guiding valve shown in Fig. 2 and slide valve lever and oily piston;
The worm's eye view that Fig. 7 is Fig. 6.
In 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
Below with reference to accompanying drawing, also the present invention is described in detail in conjunction with the embodiments.It should be noted that, in the situation that do not conflict, below feature in each embodiment and embodiment can mutually combine.
In one of them embodiment of the present invention, 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 coordinate, and plays sealing; Movable pulley 120 is moving elements, and movable pulley 120 can move reciprocatingly in 110 li, quiet guiding valve.Because movable pulley 120 does not directly contact with compressor drum, thoroughly solved the abrasive phenomenon of compressor capacity adjusting valve and rotor, thereby improved the reliability of compressor.Below describe 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 coordinated with female rotor and the 3rd surface 113 that coordinates with male rotor, be provided with the through hole 114 axially run through on this quiet guiding valve 110, and be provided with vertically the first by-pass hole 112a that a plurality of and described through hole 114 is communicated with on described second surface 112, and be provided with vertically the second by-pass hole 113a that one or more and described through hole 114 is communicated with on described the 3rd surface 113.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 and a plurality of the second by-pass hole 113a can control compressor and realize that at diverse location compressor compresses gas realizes bypass in different positions, thereby realize the function that compressor stepless is regulated.
Preferably, described the first by-pass hole 112a is the bar hole extended along described female rotor Hand of spiral; Described the second by-pass hole 113a is the bar hole extended along described male rotor Hand of spiral.
The rising of pressure due to along with screw compression the time, pressure reduction between 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 in 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 in embodiment, described movable pulley 120 comprises movable pulley main body 121 and the joint 122 connected successively from suction end to exhaust end, described movable pulley main body 121 coordinates with the through hole 114 of described quiet guiding valve 110, is provided with described sliding valve hole 122a on described joint 122.121 of movable pulley main bodys need get final product less times greater than the length of all the 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, a kind of guiding valve controlling mechanism is provided, as shown in FIG. 6 and 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 loaded in 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 slide valve lever 300 band movable pulley 100 to-and-fro motion.
In another embodiment, provide a kind of helical-lobe compressor, 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 invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a 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 coordinated with female rotor and the 3rd surface that coordinates with male rotor, be provided with the through hole axially run through on this quiet guiding valve, and be provided with vertically the first by-pass hole that one or more and described through hole is communicated with on described second surface, and/or be provided with vertically the second by-pass hole that one or more and described through hole is communicated with on described the 3rd surface; Described movable pulley can be installed in the through hole of described quiet guiding valve with axial motion, 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 extended along described female rotor Hand of spiral; And/or described the second by-pass hole is the bar hole extended 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. described according to any one in claim 1 to 5, it is characterized in that, described movable pulley comprises movable pulley main body and the joint connected successively from suction end to exhaust end, described movable pulley main body coordinates with the through hole of described quiet guiding valve, is provided with the sliding valve hole for being connected with slide valve lever on 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, comprise 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 guiding valve as claimed in any of claims 1 to 7 in one of claims.
9. a helical-lobe compressor, it comprises body, on this body, is provided with piston chamber, it is characterized in that, also comprises guiding valve controlling mechanism as claimed in claim 8, described quiet guiding valve is fixedly mounted in described piston chamber.
10. a screw compressor capacity regulating method, described helical-lobe compressor comprises piston chamber and guiding valve, it is characterized in that, described method comprises the steps: described guiding valve is divided into to quiet guiding valve and two parts of movable pulley, described quiet guiding valve is fixedly mounted in described piston chamber, the first surface of described quiet guiding valve and piston chamber surface engagement, second surface coordinates with female rotor, the 3rd surface coordinates with male rotor, on described quiet guiding valve, the through hole axially run through is set, and the first by-pass hole that one or more and described through hole is communicated with is set on described second surface vertically, and/or on described the 3rd surface, the second by-pass hole that one or more and described through hole is communicated with is set vertically, described movable pulley is loaded in the through hole of described quiet guiding valve, drives described movable pulley to-and-fro motion, optionally to open and close described the first by-pass hole and/or described the second by-pass hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193436.8A CN103486037B (en) | 2012-06-12 | 2012-06-12 | Slide valve, slide valve adjusting mechanism, screw compressor and capacity adjusting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193436.8A CN103486037B (en) | 2012-06-12 | 2012-06-12 | Slide valve, slide valve adjusting mechanism, screw compressor and capacity adjusting method thereof |
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| CN103486037A true CN103486037A (en) | 2014-01-01 |
| CN103486037B CN103486037B (en) | 2016-07-20 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106164490A (en) * | 2014-04-18 | 2016-11-23 | 江森自控日立空调技术（香港）有限公司 | Helical-lobe compressor |
| CN107387409A (en) * | 2017-09-04 | 2017-11-24 | 珠海格力电器股份有限公司 | Variable frequency screw compressor and air conditioner |
| CN107701449A (en) * | 2017-10-30 | 2018-02-16 | 珠海格力电器股份有限公司 | Screw compressor and air conditioner |
| 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 |
| CN108661906A (en) * | 2018-08-13 | 2018-10-16 | 珠海格力电器股份有限公司 | Slide valve, slide valve adjusting mechanism and screw compressor |
| CN109058115A (en) * | 2018-09-17 | 2018-12-21 | 西安交通大学 | A kind of helical-lobe compressor slide valve with gas attenuation function |
| WO2019218796A1 (en) * | 2018-05-18 | 2019-11-21 | 麦克维尔空调制冷(武汉)有限公司 | Capacity control system and method for screw compressor capable of switching running rotating speed at constant frequency |
| WO2020056982A1 (en) * | 2018-09-17 | 2020-03-26 | 西安交通大学 | Screw compressor slide valve having airflow pulsation attenuation function and screw compressor |
| WO2020143229A1 (en) * | 2019-01-09 | 2020-07-16 | 约克（无锡）空调冷冻设备有限公司 | Screw compressor and control method therefor |
| CN114183354A (en) * | 2022-02-16 | 2022-03-15 | 深圳市瑞雪制冷设备有限公司 | Screw type refrigerating machine for ultralow temperature refrigeration |
| CN114352523A (en) * | 2022-02-15 | 2022-04-15 | 珠海格力电器股份有限公司 | Screw compressor, control method thereof and air conditioning equipment |
| CN114484005A (en) * | 2022-02-18 | 2022-05-13 | 浙江银轮机械股份有限公司 | Temperature control valve, engine lubricating oil circuit system, control method and device |
| CN115179018A (en) * | 2022-05-07 | 2022-10-14 | 神钢无锡压缩机股份有限公司 | Oil-free screw rotor preassembling device and assembling method |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106164490A (en) * | 2014-04-18 | 2016-11-23 | 江森自控日立空调技术（香港）有限公司 | Helical-lobe 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 |
| CN107387409A (en) * | 2017-09-04 | 2017-11-24 | 珠海格力电器股份有限公司 | Variable frequency screw compressor and air conditioner |
| CN107701449A (en) * | 2017-10-30 | 2018-02-16 | 珠海格力电器股份有限公司 | Screw compressor and air conditioner |
| CN107701449B (en) * | 2017-10-30 | 2023-08-08 | 珠海格力电器股份有限公司 | Screw compressor and air conditioner |
| WO2019218796A1 (en) * | 2018-05-18 | 2019-11-21 | 麦克维尔空调制冷(武汉)有限公司 | Capacity control system and method for screw compressor capable of switching running rotating speed at constant frequency |
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| CN108661906A (en) * | 2018-08-13 | 2018-10-16 | 珠海格力电器股份有限公司 | Slide valve, slide valve adjusting mechanism and screw compressor |
| WO2020034520A1 (en) * | 2018-08-13 | 2020-02-20 | 珠海格力电器股份有限公司 | Slide valve, slide valve adjustment mechanism and screw compressor |
| US11365736B2 (en) | 2018-08-13 | 2022-06-21 | Gree Electric Appliances, Inc. Of Zhuhai | Slide valve, slide valve adjustment mechanism and screw compressor |
| CN109058115A (en) * | 2018-09-17 | 2018-12-21 | 西安交通大学 | A kind of helical-lobe compressor slide valve with gas attenuation function |
| WO2020056982A1 (en) * | 2018-09-17 | 2020-03-26 | 西安交通大学 | Screw compressor slide valve having airflow pulsation attenuation function and screw compressor |
| WO2020143229A1 (en) * | 2019-01-09 | 2020-07-16 | 约克（无锡）空调冷冻设备有限公司 | Screw compressor and control method therefor |
| US11953006B2 (en) | 2019-01-09 | 2024-04-09 | Tyco Fire & Security Gmbh | Screw compressor and control method therefor |
| CN114352523A (en) * | 2022-02-15 | 2022-04-15 | 珠海格力电器股份有限公司 | Screw compressor, control method thereof and air conditioning equipment |
| CN114183354A (en) * | 2022-02-16 | 2022-03-15 | 深圳市瑞雪制冷设备有限公司 | Screw type refrigerating machine for ultralow temperature refrigeration |
| CN114484005A (en) * | 2022-02-18 | 2022-05-13 | 浙江银轮机械股份有限公司 | Temperature control valve, engine lubricating oil circuit system, control method and device |
| CN114484005B (en) * | 2022-02-18 | 2024-04-12 | 浙江银轮机械股份有限公司 | Temperature control valve, engine lubricating oil circuit system, control method and device |
| CN115179018A (en) * | 2022-05-07 | 2022-10-14 | 神钢无锡压缩机股份有限公司 | Oil-free screw rotor preassembling device and assembling method |
| CN115179018B (en) * | 2022-05-07 | 2023-08-15 | 神钢无锡压缩机股份有限公司 | Oil-free screw rotor pre-assembly device and assembly method |
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| CN103486037B (en) | 2016-07-20 |
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