CN103486038A - Slide valve, slide valve regulating mechanism and screw rod compressor having slide valve regulating mechanism - Google Patents
Slide valve, slide valve regulating mechanism and screw rod compressor having slide valve regulating mechanism Download PDFInfo
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- CN103486038A CN103486038A CN201210193438.7A CN201210193438A CN103486038A CN 103486038 A CN103486038 A CN 103486038A CN 201210193438 A CN201210193438 A CN 201210193438A CN 103486038 A CN103486038 A CN 103486038A
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- guiding valve
- slide valve
- valve
- guiding
- slide
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Abstract
The invention discloses a slide valve. The slide valve comprises a circular arc-shaped first surface matched with the surface of a slide valve cavity, a concave second surface matched with a female rotor and a concave third surface matched with a male rotor, and the slide valve is provided with a slide valve hole connected with a slide valve rod; the slide valve also comprises a fourth surface and a fifth surface, the fourth surface is connected between the first surface and the second surface, and the fifth surface is connected between the first surface and the third surface. The structure is adopted by the slide valve, on one hand, a distance between the slide valve hole and a slide valve center is reduced, so that a distance between an oil piston and a bearing of the slide valve is as small as possible, and the stability of a slide valve assembly is improved, at the same time, the height of a supporting force of the slide valve is increased, so that the supporting force contact area of the slide valve is increased, and the abrasion of the slide valve is reduced; on the other hand, the cross section area of the slide valve is reduced, so that the weight of the slide valve is reduced, and the magnitude of an unloading force is increased. Meanwhile, the invention also discloses a slide valve regulating mechanism having the slide valve and a screw rod compressor.
Description
Technical field
The present invention relates to helical-lobe compressor, particularly relate to a kind of guiding valve of helical-lobe compressor, there is the guiding valve controlling mechanism of this guiding valve, and there is 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 helical-lobe compressor.Guiding valve is loaded in piston chamber and is positioned at the intersection point place of yin, yang rotor two circles, can on the direction with the flat shape of cylinder-bore axis, move around, rotation along with the yin, yang rotor, the pressure of compressed gas improves gradually along the direction of rotor, slip along with guiding valve, the housing of guiding valve and compressor separates, and some gas just can fall by the opening bypass, thereby reaches the purpose of capacity regulating.As shown in Figure 1, slide-valve surface comprises the first surface 111 that coordinates with piston chamber 810, the second surface 121 relative with female rotor 300 and three surface 122 relative with male rotor 200 to the structure of existing guiding valve.The guiding valve of this kind of structure is along with outside dimension increases, it is large that the weight of guiding valve becomes, the surface of contact of guiding valve in piston chamber diminishes, and causes the capacity regulating reliability of helical-lobe compressor of large slide-valve design poor, often occurs that scratch appears in the both sides that guiding valve contacts with piston chamber.
Summary of the invention
For above-mentioned prior art present situation, first technical problem to be solved by this invention is, a kind of guiding valve is provided, and its good stability in moving process, and it is little to wear and tear, with the reliability of the guiding valve controlling mechanism that improves 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.
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 present invention solves the technological scheme that above-mentioned first technical problem adopts: a kind of guiding valve, this guiding valve has and the circular arc first surface of piston chamber surface engagement, the spill second surface coordinated with female rotor and spill the 3rd surface that coordinates with male rotor, and is provided with the sliding valve hole be connected with slide valve lever on this guiding valve; Described guiding valve also has and is connected to the 4th between described first surface and described second surface surface and is connected to the 5th surface between described first surface and described the 3rd surface.
In embodiment, the corresponding centripetal angle of described first surface is α therein, and 200≤α≤300 degree.
In embodiment, described the 4th surface and described the 5th surface are plane therein.
Therein in embodiment, described the 4th surface and the described the 5th surperficial all parallel with the bisector of the corresponding centripetal angle α of described first surface.
Therein in embodiment, the distance between the corresponding string of described first surface and described first surface place Yuan center of circle O is greater than the distance between the center line of described center of circle O and described sliding valve hole.
In embodiment, described guiding valve comprises main slide valve and the secondary guiding valve be connected therein, and described main slide valve has described first surface, and described secondary guiding valve has described second surface, described the 3rd surface, described the 4th surface and described the 5th surface.
In embodiment, described main slide valve is connected by screw or locating stud with described secondary guiding valve therein.
In embodiment, the fitting surface that described main slide valve and described secondary guiding valve match is plane therein.
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 comprises described guiding valve controlling mechanism.
Compared with prior art, guiding valve provided by the present invention, owing to increasing by the 4th surface between the first surface at guiding valve and second surface and increase by the 5th surface between first surface and the 3rd surface, on the one hand, reduced the distance at sliding valve hole and guiding valve center, make the bearing distance of oily piston and guiding valve as far as possible little, improved the stability of slide valve assembly, with it simultaneously, guiding valve supports stressed height to be increased, make the stressed area of contact of support of guiding valve increase, reduced worn spool valve; On the other hand, the guiding valve of this kind of structure is compared to the guiding valve of prior art, and cross-section area reduces, and has alleviated guiding valve weight, has improved the size of unloading force.
As can be seen here, guiding valve provided by the present invention, good stability, and it is little to wear and tear, and has improved the reliability of the guiding valve controlling mechanism of helical-lobe compressor.
The accompanying drawing explanation
The shape of cross section schematic diagram that Fig. 1 is guiding valve of the prior art;
The shape of cross section schematic diagram that Fig. 2 is the guiding valve in one of them embodiment of the present invention;
The perspective view that Fig. 3 is the main slide valve of guiding valve shown in Fig. 3;
The perspective view that Fig. 4 is the secondary guiding valve of guiding valve shown in Fig. 3;
The assembling schematic diagram that Fig. 5 is guiding valve shown in Fig. 3 and rotor;
The assembling schematic diagram that Fig. 6 is guiding valve shown in Fig. 3 and oily piston.
In above each figure, 100-guiding valve, 110-main slide valve, the 111-first surface, 112-sliding valve hole, the secondary guiding valve of 120-, the 121-second surface, 122-the 3rd surface, 123-the 4th surface, 124-the 5th surface, 200-male rotor, 300-female rotor, 400-oil piston, 500-slide valve lever, 600-oil cylinder, 700-exhaust shaft bearing, 800-body, 810-piston chamber.
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.
Provide a kind of guiding valve in one of them embodiment of the present invention, as shown in Figures 2 to 4, this guiding valve 100 has with the circular arc first surface 111 of piston chamber 810 surface engagement, the spill second surface 121 coordinated with female rotor 300, spill the 3rd surface 122 coordinated with male rotor 200, is connected to the surface of the 4th between described first surface 111 and described second surface 121 123 and is connected to the 5th surface 124 between described first surface 111 and described the 3rd surface 122.
The guiding valve 100 of the present embodiment is compared with guiding valve 100 of the prior art (as shown in Figure 1), owing to increasing by the 4th surface 123 between first surface 111 and second surface 121 and increase by the 5th surface 124 between first surface 111 and the 3rd surface 122, on the one hand, reduced the distance H 1 of sliding valve hole 112 with guiding valve center (that is to say the first surface 111 Yuan center of circle, place O), make oily piston 400 as far as possible little with the bearing distance of guiding valve, improved the stability of slide valve assembly, with it simultaneously, guiding valve supports stressed height (distance H 2 between the center line of center of circle O and described sliding valve hole) to be increased, make the stressed area of contact of support of guiding valve increase, reduced worn spool valve, on the other hand, the guiding valve of this kind of structure is compared to the guiding valve of prior art, and cross-section area reduces, and has alleviated guiding valve weight, has improved the size of unloading force.
Owing to having increased the 123 and the 5th surface 124, the 4th surface, therefore can strengthen the corresponding centripetal angle α of described first surface 111, to increase the surface of contact of guiding valve and piston chamber 810, preferably, 200≤α≤300 degree.
For convenient processing, preferably, described the 4th surface 123 and described the 5th surface 124 are plane.Further preferably, the described the 4th surperficial 123 is all parallel with the corresponding centripetal bisector of angle of described first surface 111 with described the 5th surface 124.
Preferably, distance H 2 between the corresponding string of described first surface 111 and the described first surface 111 Yuan center of circle, place O is greater than the distance H 1 between the center line of described center of circle O and described sliding valve hole 112, further to reduce the bearing distance of oily piston 400 and guiding valve, increase guiding valve and support stressed height.
For easy to process, simplified manufacturing technique, described guiding valve 100 preferably adopts main slide valve 110 and secondary guiding valve 120 split-type structurals, described main slide valve 110 has described first surface 111, and described secondary guiding valve 120 has described second surface 121, described the 3rd surface 122, described the 4th surface 123 and described the 5th surface 124.Described main slide valve 110 is connected by screw or locating stud (not shown on figure) with described secondary guiding valve 120.The fitting surface that described main slide valve 110 and described secondary guiding valve 120 match is flat shape.If certainly do not consider cost, described guiding valve 100 is preferably one-body molded.
The guiding valve 100 of the present embodiment and the assembling schematic diagram of yin, yang rotor as shown in Figure 5, guiding valve 100 first surfaces 111 and piston chamber 810 surface engagement, second surface 121 female rotors 300 coordinate, the 3rd surface 122 coordinates with male rotor 200.Owing to having reduced the distance H 1 of sliding valve hole 112 with the guiding valve center, make oily piston 400 as far as possible little with the bearing distance of guiding valve, improved the stability of slide valve assembly, simultaneously, guiding valve supports stressed height H 2 to be increased, and makes the stressed area of contact of support of guiding valve increase, and has reduced worn spool valve.
In another embodiment, a kind of guiding valve controlling mechanism is provided, as shown in Figure 6, the guiding valve controlling mechanism comprises guiding valve 100, slide valve lever 500 and the oily piston 400 of above-described embodiment, after main slide valve 110 assembles by screw is whole with secondary guiding valve 120, be assemblied in the piston chamber 810 of body 800, there is gap in secondary guiding valve 120 with the gear tip clearance of male rotor 200, female rotor 300, in order to can not encounter secondary guiding valve 120 after the rotor motion.Oil piston 400 is assemblied in the oil cylinder 600 of exhaust shaft bearing 700, and described slide valve lever 500 1 ends are threaded with the sliding valve hole 112 of described guiding valve, and the other end is connected with described oily piston 400.
In another embodiment, provide a kind of helical-lobe compressor, it uses the guiding valve controlling mechanism of 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, this guiding valve has and the circular arc first surface of piston chamber surface engagement, the spill second surface coordinated with female rotor and spill the 3rd surface that coordinates with male rotor, and is provided with the sliding valve hole be connected with slide valve lever on this guiding valve; It is characterized in that, described guiding valve also has and is connected to the 4th between described first surface and described second surface surface and is connected to the 5th surface between described first surface and described the 3rd surface.
2. guiding valve according to claim 1, is characterized in that, the corresponding centripetal angle of described first surface is α, and 200≤α≤300 degree.
3. guiding valve according to claim 2, is characterized in that, described the 4th surface and described the 5th surface are plane.
4. guiding valve according to claim 3, is characterized in that, described the 4th surface is all parallel with the bisector of the corresponding centripetal angle α of described first surface with described the 5th surface.
5. guiding valve according to claim 2, is characterized in that, the distance between the corresponding string of described first surface and described first surface place Yuan center of circle O is greater than the distance between the center line of described center of circle O and described sliding valve hole.
6. according to the described guiding valve of any one in claim 1 to 5, it is characterized in that, described guiding valve comprises main slide valve and the secondary guiding valve be connected, described main slide valve has described first surface, and described secondary guiding valve has described second surface, described the 3rd surface, described the 4th surface and described the 5th surface.
7. guiding valve according to claim 6, is characterized in that, described main slide valve is connected by screw or locating stud with described secondary guiding valve.
8. guiding valve according to claim 6, is characterized in that, the fitting surface that described main slide valve and described secondary guiding valve match is plane.
9. 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 8 in one of claims.
10. a helical-lobe compressor, is characterized in that, comprises guiding valve controlling mechanism as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193438.7A CN103486038B (en) | 2012-06-12 | 2012-06-12 | Guiding valve, guiding valve governor motion and there is the helical-lobe compressor of this guiding valve governor motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193438.7A CN103486038B (en) | 2012-06-12 | 2012-06-12 | Guiding valve, guiding valve governor motion and there is the helical-lobe compressor of this guiding valve governor motion |
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| Publication Number | Publication Date |
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| CN103486038A true CN103486038A (en) | 2014-01-01 |
| CN103486038B CN103486038B (en) | 2016-07-06 |
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| CN201210193438.7A Active CN103486038B (en) | 2012-06-12 | 2012-06-12 | Guiding valve, guiding valve governor motion and there is the helical-lobe compressor of this guiding valve governor motion |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314818A (en) * | 2014-09-28 | 2015-01-28 | 珠海格力电器股份有限公司 | Semi-closed type screw compressor |
| CN106605069A (en) * | 2014-09-24 | 2017-04-26 | 三菱电机株式会社 | Screw compressor and refrigeration cycle device |
| CN109162920A (en) * | 2018-08-30 | 2019-01-08 | 珠海格力电器股份有限公司 | Screw compressor |
| WO2021047247A1 (en) * | 2019-09-11 | 2021-03-18 | 珠海格力电器股份有限公司 | Two-stage compressor and control method of two-stage compressor, and air conditioning unit |
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| JPS54134806A (en) * | 1978-04-12 | 1979-10-19 | Hitachi Ltd | Screw compressor capacity control mechanism |
| CN201065834Y (en) * | 2007-06-29 | 2008-05-28 | 上海汉钟精机股份有限公司 | Double keyway capacity-regulating sliding block of refrigerating compressor |
| JP4092040B2 (en) * | 1999-03-31 | 2008-05-28 | 株式会社神戸製鋼所 | Screw compressor |
| CN101258323A (en) * | 2005-09-07 | 2008-09-03 | 开利公司 | Slide valve |
| CN102052315A (en) * | 2009-11-11 | 2011-05-11 | 珠海格力电器股份有限公司 | Screw compressor |
| CN202100461U (en) * | 2011-05-17 | 2012-01-04 | 珠海格力电器股份有限公司 | High-temperature screw type refrigeration compressor suitable for high-temperature working condition |
| CN202628529U (en) * | 2012-06-12 | 2012-12-26 | 珠海格力电器股份有限公司 | Slide valve, slide valve adjusting mechanism and screw rod compressor with slide valve adjusting mechanism |
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2012
- 2012-06-12 CN CN201210193438.7A patent/CN103486038B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS54134806A (en) * | 1978-04-12 | 1979-10-19 | Hitachi Ltd | Screw compressor capacity control mechanism |
| JP4092040B2 (en) * | 1999-03-31 | 2008-05-28 | 株式会社神戸製鋼所 | Screw compressor |
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| CN201065834Y (en) * | 2007-06-29 | 2008-05-28 | 上海汉钟精机股份有限公司 | Double keyway capacity-regulating sliding block of refrigerating compressor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106605069A (en) * | 2014-09-24 | 2017-04-26 | 三菱电机株式会社 | Screw compressor and refrigeration cycle device |
| CN104314818A (en) * | 2014-09-28 | 2015-01-28 | 珠海格力电器股份有限公司 | Semi-closed type screw compressor |
| CN109162920A (en) * | 2018-08-30 | 2019-01-08 | 珠海格力电器股份有限公司 | Screw compressor |
| WO2021047247A1 (en) * | 2019-09-11 | 2021-03-18 | 珠海格力电器股份有限公司 | Two-stage compressor and control method of two-stage compressor, and air conditioning unit |
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| Publication number | Publication date |
|---|---|
| CN103486038B (en) | 2016-07-06 |
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