CN103122857B - A kind of compression assembly of band screw-like rotor of compressor - Google Patents
A kind of compression assembly of band screw-like rotor of compressor Download PDFInfo
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- CN103122857B CN103122857B CN201210370555.6A CN201210370555A CN103122857B CN 103122857 B CN103122857 B CN 103122857B CN 201210370555 A CN201210370555 A CN 201210370555A CN 103122857 B CN103122857 B CN 103122857B
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Abstract
The invention discloses a kind of compression assembly of band screw-like rotor of compressor, comprise rotor, two symmetrically arranged star-wheels, described 2 star-wheels are engaged on the both sides of rotor respectively; Described each star-wheel is provided with 11 star-wheel teeth; Described rotor first reduces gradually to the diameter of exhaust end from inlet end, then in cylindric; Described rotor is provided with 8 compression grooves, described each compression groove carries out spiral to exhaust end along the outer wall of rotor from the inlet end of rotor; The exradius of the compression groove of inlet end is greater than the exradius of the compression groove of exhaust end; The groove depth of each compression groove is identical; When star-wheel and rotor are in work engagement, each star-wheel there are 4 star-wheel teeth and epitrochanterian compression groove are meshed; The present invention program, at use same size structure star-wheel, when identical central distance, adds tooth number of star when being meshed with rotor, add compression stroke, thus the base that improve compressor holds elementary volume about 1.88 times, compression ratio about 1.48 times.
Description
Technical field
The present invention relates to a kind of improvement of compressor part, particularly one increases air displacement by changing rotor profile structure, to reach the compression assembly of the band screw-like rotor of the compressor of the singe screw of the efficiency improving refrigeration, belongs to refrigeration technology field.
Background technique
Singe screw refrigeration belongs to a kind of novel rotary compressor, and described singe screw refrigeration, includes a compression assembly, as shown in accompanying drawing 1,2,3, its structure is simple, and be made up of a rotor and two symmetrical star-wheels, described 2 star-wheels are engaged on the both sides of rotor respectively; The velocity ratio that star-wheel and rotor generally adopt is 6:11, and namely star-wheel has 11 teeth, and rotor has 6 compression grooves; This singe screw refrigeration has that volume is little, capacity is large, pressure ratio is large, noise vibration is little, no pulse, can realize the advantages such as electrodeless adjustment, applies widely in field acquisitions such as air conditioner refrigerating, refrigeration, freezing, medicine manufacture.
At present the singe screw of the technology of the maturation rotor adopted that freezes is the cylindric screw rotor with 6 helical compression grooves, during running, only have in 11 teeth of each star-wheel 3 teeth at one time threaded rotor be meshed, remaining 8 teeth of each star-wheel then define a kind of resource and waste spatially.
Summary of the invention
The present invention seeks to propose a kind of increase air displacement by changing rotor profile structure, to reach the compression assembly of the band screw-like rotor of the compressor of the singe screw of the efficiency improving refrigeration to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution used in the present invention is: a kind of compression assembly of band screw-like rotor of compressor, and comprise rotor, two symmetrically arranged star-wheels, described 2 star-wheels are engaged on the both sides of rotor respectively; Described each star-wheel is provided with 11 star-wheel teeth; Described rotor first reduces gradually to the diameter of exhaust end from inlet end, then in cylindric; Described rotor is provided with 8 compression grooves, described each compression groove carries out spiral to exhaust end along the outer wall of rotor from the inlet end of rotor; The exradius of the compression groove of inlet end is greater than the exradius of the compression groove of exhaust end; The groove depth of each compression groove is identical; When star-wheel and rotor are in work engagement, each star-wheel there are 4 star-wheel teeth and epitrochanterian compression groove are meshed.
Preferably, the curve of the outer circumferential face projection formation of described epitrochanterian each compression groove is by straight line AF, straight line CD, and arc section AC forms.
Preferably, on described rotor, each compression groove has identical dimensional structure; The groove depth of the compression groove of the arc section AC on each compression groove is identical.
Preferably, described epitrochanterian circular cylinder shaped portion is provided with energy adjustment guiding valve.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
The compression assembly of the band screw-like rotor of compressor of the present invention, at use same size structure star-wheel, when identical central distance, add tooth number of star when being meshed with rotor, during operation, the same time has 4 star-wheel teeth to be meshed with rotor, add compression stroke, thus the base that improve compressor holds elementary volume about 1.88 times, adds compression ratio about 1.48 times, thus effectively add the air displacement of compressor, efficiency and performance.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Accompanying drawing 1 is the schematic diagram of the cylindrical rotor of existing singe screw refrigeration compressor;
Accompanying drawing 2 is the existing rotor of singe screw refrigeration compressor compression assembly and the schematic diagram of star-wheel engagement;
Accompanying drawing 3 is the work tooth of star-wheel in the compression assembly of existing singe screw refrigeration compressor schematic diagram when being arranged in rotor;
Accompanying drawing 4 is schematic diagram of the rotor of the compression assembly of compressor of the present invention;
Accompanying drawing 5 be the rotor of the compression assembly of compressor of the present invention be meshed with star-wheel state time schematic diagram;
Accompanying drawing 6 is the work tooth of star-wheel in the compression assembly of compressor of the present invention schematic diagram when being arranged in rotor;
Wherein: 1, rotor; 2, star-wheel.
Embodiment
Be the compression assembly of the band screw-like rotor of a kind of compressor of the present invention as shown in figs. 4 through 6, comprise rotor 1, two symmetrically arranged star-wheels 2, described 2 star-wheels 2 are engaged on the both sides of rotor 1 respectively; Described each star-wheel 2 is provided with 11 star-wheel teeth; Described rotor 1 first reduces gradually to the diameter of exhaust end from inlet end, then in cylindric; Described rotor 1 is provided with 8 compression grooves (not marking), described each compression groove carries out spiral to exhaust end along the outer wall of rotor 1 from the inlet end of rotor 1; Rotor 1 is to exhaust end from suction end, and the outer periphery diameter of its compression groove first reduces gradually, then the intermediate curve formed in cylindric, its middle sectional view is the arc section AC on same circle; The exradius of the compression groove of inlet end is greater than the exradius of the compression groove of exhaust end; The curve of the outer circumferential face projection formation of each compression groove on described rotor 1 is by straight line AF, straight line CD, and arc section AC forms; On described rotor 1, each compression groove has identical dimensional structure; The groove depth H1 of the compression groove of the arc section AC on each compression groove is identical, and is a determined value; When star-wheel 2 and rotor 1 are in work engagement, each star-wheel 2 there is the compression groove on 4 star-wheel teeth and rotor 1 be meshed; Circular cylinder shaped portion on described rotor 1 is provided with energy adjustment guiding valve (not shown).
The compression assembly of the band screw-like rotor of compressor of the present invention, still use the star-wheel of 11 the star-wheel teeth identical with tradition, but being different from traditional rotor only has 6 compression grooves (see accompanying drawing 1,2), its velocity ratio is 11/6; The rotor that the present invention adopts uses 8 compression grooves (see accompanying drawing 4,5), and to avoid the waste of compression stroke, therefore velocity ratio of the present invention is: 11/8.
As shown in Figure 6, in the present invention, assuming that the radius of star-wheel is R1, then the centre distance of rotor and star-wheel
, groove width
, its profile line upper air end straight line CD and air inlet end face angle ∠ CDM=65.455 °, the radius that arc section AC uses:
The circle radius of E point on inlet end rotor in the present invention:
The groove exradius of cathetus CD section of the present invention:
As shown in Figure 6, assuming that straight line NP is the cylindrical contour of the compression groove of the rotor of the compression assembly of traditional singe screw refrigeration compressor, star-wheel sweeps from K point, and G scans out, and has 6 compression grooves, radius
, use identical star wheel structure, centre distance, so by calculating the compression groove stroke that can draw each groove of rotor of the compression assembly of traditional singe screw refrigeration compressor:
In like manner there are 8 compression grooves for rotor of the present invention, and above relative dimensions, the compression groove stroke of each groove of rotor that the present invention adopts can be drawn:
The screw rotor used due to the present invention has 8 grooves, traditional singe screw refrigeration compressor the rotor of compression assembly have 6 compression grooves, rotor often turns around and all completes the compression that groove number takes advantage of 2, therefore total compression stroke increasing amount of the present invention
, therefore compression stroke increases obviously, according to gas equation:
, known singe screw refrigeration of the present invention can obtain higher compression ratio, and its effect can be equal with some two traditional pole compression.
According to accompanying drawing 6 and calculating above, the present invention sweeps the star-wheel toothed area of rotor:
The base of the compression groove of the rotor of the compression assembly of existing singe screw refrigeration compressor holds elementary volume:
The base of the compression groove of the rotor of the compression assembly of the band screw-like rotor of compressor of the present invention holds elementary volume:
If assuming that rotor speed is n, according to air displacement formula:
The air displacement of existing singe screw refrigeration compressor:
The air displacement of compressor of the present invention:
Nearly 1.88 times are added according to the above air displacement that calculates
Have according to perfect gas compression process:
(wherein n is polytropic compression exponent, assuming that n=1.13)
Then for the compression groove of each rotor of rotor of the compression assembly of the refrigeration compressor of prior art, assuming that suction pressure is P1, exhaust pressure is P2, and during exhaust, volume is Vout, then have
, the rotor suction pressure that the present invention uses is
, exhaust pressure is P2`, and during exhaust, volume is
, then have
, then the exhaust pressure of the present invention's lifting and the exhaust pressure ratio of prior art:
The compression assembly of the band screw-like rotor of compressor of the present invention, at use same size structure star-wheel, when identical central distance, add tooth number of star when being meshed with rotor, during operation, the same time has 4 star-wheel teeth to be meshed with rotor, add compression stroke, thus the base that improve compressor holds elementary volume about 1.88 times, adds compression ratio about 1.48 times, thus effectively add the air displacement of compressor, efficiency and performance.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (4)
1. a compression assembly for the band screw-like rotor of compressor, comprise rotor, two symmetrically arranged star-wheels, described 2 star-wheels are engaged on the both sides of rotor respectively; It is characterized in that: described each star-wheel is provided with 11 star-wheel teeth; Described rotor first reduces gradually to the diameter of exhaust end from inlet end, then in cylindric; Described rotor is provided with 8 compression grooves, described each compression groove carries out spiral to exhaust end along the outer wall of rotor from the inlet end of rotor; The exradius of the compression groove of inlet end is greater than the exradius of the compression groove of exhaust end; The groove depth of each compression groove is identical; When star-wheel and rotor are in work engagement, each star-wheel there are 4 star-wheel teeth and epitrochanterian compression groove are meshed.
2. the compression assembly of the band screw-like rotor of compressor according to claim 1, is characterized in that: the curve of the outer circumferential face projection formation of described epitrochanterian each compression groove is by straight line AF, straight line CD, and arc section AC forms.
3. the compression assembly of the band screw-like rotor of compressor according to claim 2, is characterized in that: on described rotor, each compression groove has identical dimensional structure; The groove depth of the compression groove of the arc section AC on each compression groove is identical.
4. the compression assembly of the band screw-like rotor of the compressor according to claim 1 or 2 or 3, is characterized in that: described epitrochanterian circular cylinder shaped portion is provided with energy adjustment guiding valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210370555.6A CN103122857B (en) | 2012-09-29 | 2012-09-29 | A kind of compression assembly of band screw-like rotor of compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210370555.6A CN103122857B (en) | 2012-09-29 | 2012-09-29 | A kind of compression assembly of band screw-like rotor of compressor |
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| CN103122857A CN103122857A (en) | 2013-05-29 |
| CN103122857B true CN103122857B (en) | 2015-11-18 |
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| CN201210370555.6A Active CN103122857B (en) | 2012-09-29 | 2012-09-29 | A kind of compression assembly of band screw-like rotor of compressor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642475A (en) * | 1992-07-24 | 1994-02-15 | Daikin Ind Ltd | Single screw compressor |
| CN101535650A (en) * | 2006-11-24 | 2009-09-16 | 大金工业株式会社 | Compressor |
| JP2010024984A (en) * | 2008-07-18 | 2010-02-04 | Daikin Ind Ltd | Screw compressor |
| JP2010196582A (en) * | 2009-02-25 | 2010-09-09 | Daikin Ind Ltd | Single screw compressor |
-
2012
- 2012-09-29 CN CN201210370555.6A patent/CN103122857B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642475A (en) * | 1992-07-24 | 1994-02-15 | Daikin Ind Ltd | Single screw compressor |
| CN101535650A (en) * | 2006-11-24 | 2009-09-16 | 大金工业株式会社 | Compressor |
| JP2010024984A (en) * | 2008-07-18 | 2010-02-04 | Daikin Ind Ltd | Screw compressor |
| JP2010196582A (en) * | 2009-02-25 | 2010-09-09 | Daikin Ind Ltd | Single screw compressor |
Non-Patent Citations (1)
| Title |
|---|
| 圆柱包络法形成的单螺杆压缩机啮合区的研究;沈阳 等;《制造技术与机床》;20101202(第12期);第142-144页 * |
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| CN103122857A (en) | 2013-05-29 |
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