CN101660526B - Flexible meshing pair of single screw compressor - Google Patents
Flexible meshing pair of single screw compressor Download PDFInfo
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- CN101660526B CN101660526B CN2009100927420A CN200910092742A CN101660526B CN 101660526 B CN101660526 B CN 101660526B CN 2009100927420 A CN2009100927420 A CN 2009100927420A CN 200910092742 A CN200910092742 A CN 200910092742A CN 101660526 B CN101660526 B CN 101660526B
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Abstract
The invention provides a flexible meshing pair of a single screw compressor, which consists of a screw spiral groove tooth surface and a working tooth surface of a star wheel, wherein the working tooth surface of the star wheel is a flexible working tooth surface that can move slightly in the normal line direction. The flexible meshing pair of the single screw compressor can automatically make up the gap between the screw spiral groove surface and the working tooth surface of the star wheel due to insufficient machining accuracy, and can also automatically make up the increased meshing gap caused by the abrasion of the working tooth surface of the star wheel, therefore, the working tooth surface of the star wheel and the screw spiral groove curved surface are ensured to be meshed completely, thus guaranteeing that the compressor always has the highest efficiency.
Description
Technical field
The present invention relates to a kind of single helical-lobe compressor intermeshing pair, relate to a kind of flexible meshing pair of single screw compressor particularly.
Background technique
Single screw compressor is a kind of more novel rotary compressor tool, and its structure is very simple, only has a screw rod and several star-wheels.Single screw compressor has series of advantages such as volume is little, capacity is big, pressure ratio is high, noise is low, vibrations are little, the pulsation of giving vent to anger is little, can satisfy the requirement of all trades and professions, can be used as the upgrading regeneration product of other form compressor.Similar with the compressor of other types, single screw compressor also can be used as decompressor and uses oppositely the time.
The efficient of single screw compressor is subjected to the back lash of screw channel and star-wheel and the control of friction, and wherein, the back lash is subjected to the control of engagement pair molded lines and machining accuracy again.The single screw compressor screw channel flank of tooth and star-wheel working flank constitute the pair of meshing pair, and the molded lines of engagement pair comprises screw channel flank of tooth molded lines and star-wheel working surface molded lines.At present, single screw compressor has following four types engagement pair:
1. straight line---lines enveloping face engagement pair.The star-wheel molded lines is straight line or curve, and screw rod tooth curved surface is the track plane that forms as bus with this straight line or curve.
2. cylinder---cylindrical envelope face engagement pair.The star-wheel working surface is the part of cylndrical surface, and screw rod tooth curved surface is the envelope surface of this cylndrical surface.
3. lines enveloping face engagement pair.Screw rod tooth curved surface is the track plane that star-wheel flank bus is gone, and the star-wheel working flank is a screw rod tooth envelope of surfaces.
4. cylinder secondary enveloping surface engagement pair.Screw rod tooth curved surface is the envelope surface of cylndrical surface, and the star-wheel working flank is the envelope surface of screw tooth surface.
In above-mentioned existing four kinds of engagement pair, the bus of first kind of engagement pair participation engagement is straight line all the time, and the abrading section is fixed, and causes wearing and tearing big, and the life-span is short, and leakage can become big in time gradually.Though second kind of engagement pair engagement Line of contact constantly changes, it is little to wear and tear, and Leak hole is bigger, and volumetric efficiency is low, in addition, has certain error of graduation man-hour adding, and machining accuracy is poor.Therefore, all be eliminated now need not for these two kinds of engagement pair.The third engagement pair does not have error of graduation, the accuracy of mesh height of engagement pair, except that bus is the line of contact of an engagement always, thereon, under the anti-envelope surface of screw rod tooth curved surface on also have a Line of contact that constantly changes to contact respectively with screw rod tooth curved surface.This engagement pair culminant star wheel flank working surface need be used the screw rod hobboing cutter processing identical with screw rod tooth curved surface, but the making of hobboing cutter and mass are comparatively difficult.The 4th kind of engagement pair screw rod tooth curved surface can be processed with milling cutter, thereby also can grinding, and flank of tooth quality makes moderate progress, but the processing of star-wheel is the same with the third engagement pair, needs to use the screw rod hobboing cutter identical with screw rod tooth curved surface.
At present, in the manufacture process of helical-lobe compressor, the back lash of new machine is subjected to the control of molded lines and machining accuracy fully, and therefore, molded lines and machining accuracy have also been controlled the efficient of the new machine of single screw compressor fully.And the efficient of compressor after bringing into use has then been controlled in new machine continuous wearing and tearing in use.
Summary of the invention
The invention provides a kind of flexible meshing pair of single screw compressor.Its purpose is to reduce the control degree that new machine is subjected to molded lines and machining accuracy, and reduces the compressor efficiency that causes owing to wearing and tearing and reduce in using process thereafter.
A kind of flexible meshing pair of single screw compressor of the present invention, its working flank by the screw channel flank of tooth and star-wheel constitutes, and the working flank of star-wheel is for making the flexible working flank of tooth of micro-displacement on its Normal direction.
For above-mentioned flexible meshing pair of single screw compressor, on each working flank of star-wheel, can all have a flanging that stretches out.
For above-mentioned flexible meshing pair of single screw compressor, flanging can be directly protruding at the working flank place of star-wheel.
For above-mentioned flexible meshing pair of single screw compressor, flanging can also form by a groove is set on star-wheel.
For above-mentioned flexible meshing pair of single screw compressor, flanging also can be and comprises directly in the outwardly directed part in the working flank place of star-wheel with by the part that a groove forms is set on star-wheel.
For above-mentioned flexible meshing pair of single screw compressor, it is gradient thickness that flanging stretches out direction along it, its thickness from the flanging root to the attenuation gradually of flanging apical margin.
For above-mentioned flexible meshing pair of single screw compressor, the star-wheel working flank on the star-wheel thickness direction more than or equal to the thickness of star-wheel.
For above-mentioned flexible meshing pair of single screw compressor, the star-wheel working flank on the star-wheel thickness direction can be below three times of star-wheel thickness.
Flexible meshing pair of single screw compressor of the present invention, the structure of its star-wheel makes working flank have certain flexibility, can on its Normal direction, make micro displacement, therefore, can automatically remedy because screw channel curved surface that the machining accuracy deficiency causes and the gap between the star-wheel working flank, also can compensate the back lash of causing automatically owing to the wearing and tearing of star-wheel working flank, like this, guarantee that star-wheel working flank and screw channel curved surface mesh fully, thereby guarantee that compressor has the highest efficient always.
Description of drawings
Fig. 1 is conventional star-wheel working flank and the diagrammatic sketch when meshing with the screw channel face.
Fig. 2 is the diagrammatic sketch of conventional star-wheel working flank not enough or wearing and tearing back and the engagement of screw channel face in machining accuracy.
Fig. 3 is the diagrammatic sketch of flexible star-wheel working flank and the engagement of screw channel face.
Fig. 4 is the diagrammatic sketch of flexible star-wheel working flank and the engagement of screw channel face.
Embodiment
Fig. 1 is the situation of conventional star-wheel working flank when meshing with the screw channel curved surface.Wherein, 1 is star-wheel, the 2nd, and the working flank of star-wheel, the 3rd, screw channel working surface.Star-wheel working surface 2 is determined by machining accuracy with the back lash of screw channel working surface 3.When machining accuracy is not enough, or can there be the back lash of fixing in compressor between star-wheel working surface 2 and the screw channel working surface 3 when star-wheel or screw channel have wearing and tearing after work a period of time, and this gap is (referring to the Fig. 2) that can not eliminate.
Fig. 3 and Fig. 4 have represented the structural type of the flexible meshing pair that the present invention proposes, and its major character is that the flanging 5 of a gradient thickness is all arranged on each working flank of star-wheel.Flanging 5 can also can be provided with a groove 6 (referring to Fig. 4) to further expand the length of flanging 5 directly at the working flank place of star-wheel protruding (referring to Fig. 3) on star-wheel.Flanging 5 from its root to apical margin attenuation gradually.
Star-wheel adopts has certain flexible material, as metallic material such as alloyed steel, alloyed copper, alloy aluminum, or engineering plastics or inorganic material such as PEEK, carbon fiber.
After the star-wheel manufacturing was finished, the free position of star-wheel working flank was positioned at curved surface 4 (referring to Fig. 3, Fig. 4), and when star-wheel working flank and the engagement of screw channel curved surface, the engaging position of star-wheel working flank is positioned at curved surface 2 (referring to Fig. 3, Fig. 4).When the working flank of star-wheel when free position 4 is compressed to engaging position 2 because the elasticity of material, star-wheel working flank and screw channel curved surface mesh fully.Therefore, even certain error is arranged when the processing star-wheel, perhaps compressor wearing and tearing occur behind the work certain hour, can guarantee that still the flexible working flank of tooth 4 of star-wheel meshes with the screw channel curved surface at 2 places fully in the position, thereby the assurance compressor has the highest efficient always.
Among the present invention, the flanging 5 (referring to Fig. 3, Fig. 4) of elongation and the varied in thickness that goes up along its length thereof, and the groove 6 (referring to Fig. 4) that is provided with, all be used to adjust the elastic strength of star-wheel working flank 4 (referring to Fig. 3, Fig. 4) along diverse location on the flank of tooth length direction.
In the above-described embodiment, when single screw compressor oppositely was used as decompressor, flexible meshing pair of single screw compressor of the present invention can use equally.
Compare with existing star-wheel, the described star-wheel of present embodiment has the flanging 5 (referring to Fig. 3, Fig. 4) of a gradient thickness, and the length of star-wheel working flank 4 (referring to Fig. 3, Fig. 4) is greater than the thickness of conventional star-wheel.Owing between the free position 4 (referring to Fig. 3, Fig. 4) of the working flank of star-wheel and the engaging position 2 (referring to Fig. 3, Fig. 4) of star-wheel working flank a micro displacement is arranged, therefore, because the elasticity of material, star-wheel working flank and screw channel curved surface can mesh fully.Therefore, the flexible working flank of tooth of present embodiment can compensate the error that occurs in the star-wheel processing automatically, also can remedy automatically compressor behind the work certain hour because wear and tear the star-wheel working flank occur and the gap between the screw channel curved surface, guarantee that star-wheel working flank and screw channel curved surface mesh fully, thereby guarantee that compressor has the highest efficient always.
Claims (6)
1. flexible meshing pair of single screw compressor, its working flank by the screw channel flank of tooth and star-wheel constitutes, and it is characterized in that: the working flank of star-wheel is for making the flexible working flank of tooth of micro-displacement on its Normal direction; On each working flank of described star-wheel, all has a flanging that stretches out along the curved surface of working flank at the thickness direction of star-wheel; Described flanging stretches out the direction gradient thickness along it, its thickness from the flanging root to the attenuation gradually of flanging apical margin.
2. flexible meshing pair of single screw compressor according to claim 1 is characterized in that: described flanging is directly protruding at the working flank place of star-wheel.
3. flexible meshing pair of single screw compressor according to claim 1 is characterized in that: described flanging is for forming by a groove is set on star-wheel.
4. flexible meshing pair of single screw compressor according to claim 1 is characterized in that: described flanging comprises directly in the outwardly directed part in the working flank place of star-wheel with by the part that a groove forms is set on star-wheel.
5. flexible meshing pair of single screw compressor according to claim 1 is characterized in that: the length of described star-wheel working flank on the star-wheel thickness direction is more than or equal to the thickness of star-wheel.
6. flexible meshing pair of single screw compressor according to claim 5 is characterized in that: described star-wheel working flank is below three times of star-wheel thickness in the length on the star-wheel thickness direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100927420A CN101660526B (en) | 2009-09-16 | 2009-09-16 | Flexible meshing pair of single screw compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100927420A CN101660526B (en) | 2009-09-16 | 2009-09-16 | Flexible meshing pair of single screw compressor |
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| CN101660526A CN101660526A (en) | 2010-03-03 |
| CN101660526B true CN101660526B (en) | 2011-10-12 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102670B (en) * | 2010-09-13 | 2013-07-17 | 李锦上 | Three-plane concurrent construction method and star wheel of single-screw compressor constructed by same |
| CN105443379B (en) * | 2014-08-20 | 2018-02-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Helical-lobe compressor and air conditioner |
| CN105909520A (en) * | 2016-04-18 | 2016-08-31 | 武汉气体压缩机有限责任公司 | Oil-free single-screw compressor |
| CN105927726B (en) * | 2016-06-22 | 2018-06-26 | 西安交通大学 | The disk like spider piece and its moulding process of single screw compressor |
| CN114876797B (en) * | 2022-06-22 | 2023-05-16 | 好米动力设备有限公司 | Double-screw four-star wheel compressor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049296U (en) * | 1989-01-26 | 1989-12-13 | 齐锋 | Flexible tooth worm-gear drive pair |
| CN101153596A (en) * | 2006-09-29 | 2008-04-02 | 上海开利涡普机械有限公司 | Compound spider piece used for single-screw compressor |
-
2009
- 2009-09-16 CN CN2009100927420A patent/CN101660526B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049296U (en) * | 1989-01-26 | 1989-12-13 | 齐锋 | Flexible tooth worm-gear drive pair |
| CN101153596A (en) * | 2006-09-29 | 2008-04-02 | 上海开利涡普机械有限公司 | Compound spider piece used for single-screw compressor |
Non-Patent Citations (7)
| Title |
|---|
| 彭晓南.《单螺杆压缩机啮合副三大特性的研究》.《机械》.2004,第31卷(第5期),29-31. |
| 李国会 |
| 李国会;彭晓南.《单螺杆压缩机啮合副三大特性的研究》.《机械》.2004,第31卷(第5期),29-31. * |
| 查世樑.《单螺杆压缩机技术的重大进展》.《压缩机技术》.2003,(第4期),28-31. |
| 查谦 |
| 查谦;邓谦;查世樑.《单螺杆压缩机技术的重大进展》.《压缩机技术》.2003,(第4期),28-31. * |
| 邓谦 |
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Effective date of registration: 20171222 Address after: 300308 Tianjin Tianjin free trade area (Airport Economic Zone) air Road No. 278 A workshop A Patentee after: Tianjin fast turbine science and Technology Development Co., Ltd. Address before: 100085 Haidian District, Haidian District, Beijing, No. 2, international science and Technology Pioneer Park, No. 2401 Patentee before: Beijing Minggao Hi-Tech Development Co., Ltd. |
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