CN103122857A - Compression assembly with bolt-like rotor for compressor - Google Patents
Compression assembly with bolt-like rotor for compressor Download PDFInfo
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- CN103122857A CN103122857A CN2012103705556A CN201210370555A CN103122857A CN 103122857 A CN103122857 A CN 103122857A CN 2012103705556 A CN2012103705556 A CN 2012103705556A CN 201210370555 A CN201210370555 A CN 201210370555A CN 103122857 A CN103122857 A CN 103122857A
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Abstract
The invention discloses a compression assembly with a bolt-like rotor for a compressor. The compression assembly comprises the rotor and two symmetrical star wheels, wherein the two star wheels are respectively meshed on the two sides of the rotor; each star wheel is provided with eleven star wheel teeth; the diameter of the rotor is gradually reduced from an air inlet end to an air outlet end at first, and then, the rotor is cylindrical; the rotor is provided with eight compression slots, and each compression slot is spiral along the outer wall of the rotor from the air inlet end to the air outlet end of the rotor; and the radius of the external circle of the compression slot at the air inlet end is larger than the radius of the external circle of the compression slot at the air outlet end, and the depths of the compression slots are equal. When the star wheels and the rotor are in a working meshing state, the four star wheel teeth on each star wheel are meshed with the compression slots in the rotor. According to the technical scheme of the compression assembly, the star wheels with the same size and structure are adopted, and under the condition of the same center distance, the star wheel teeth, meshed with the rotor, increase, and the compression stroke is enhanced, so that the base capacitor volume and the compression ratio of the compressor are respectively enhanced by about 1.88 times and 1.48 times.
Description
Technical field
The present invention relates to a kind of improvement of compressor part, particularly a kind ofly increase air displacement by changing the rotor profile structure, the compression assembly with the screw-like rotor so that the compressor of single screw rod of reaching the efficient that improves refrigeration is used belongs to refrigeration technology field.
Background technique
Single screw bolt refrigerant belongs to a kind of novel rotary compressor, and described single screw bolt refrigerant includes a compression assembly, as shown in accompanying drawing 1,2,3, it is simple in structure, is comprised of the star-wheel of a rotor and two symmetries, and described 2 star-wheels are engaged on respectively the both sides of rotor; The general velocity ratio that adopts of star-wheel and rotor is 6:11, and namely star-wheel has 11 teeth, and rotor has 6 compression grooves; This list screw bolt refrigerant has that volume is little, capacity is large, pressure ratio is large, noise vibration is little, no pulse, can realize the advantage such as electrodeless adjusting, obtains application widely in fields such as air conditioner refrigerating, refrigeration, freezing, medicine manufacturing.
The rotor that single screw bolt refrigerant of the technology of present maturation adopts is the cylindric screw rotor with 6 spirality 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 have formed the waste on a kind of resource and space.
Summary of the invention
The present invention seeks to have proposed in order to overcome the deficiencies in the prior art a kind ofly increases air displacement by changing the rotor profile structure, the compression assembly with the screw-like rotor of using with the compressor of single screw rod of reaching the efficient that improves refrigeration.
For achieving the above object, the technical solution used in the present invention is: the compression assembly with the screw-like rotor that a kind of compressor is used, comprise rotor, two symmetrically arranged star-wheels, and described 2 star-wheels are engaged on respectively the both sides of rotor; Be provided with 11 star-wheel teeth on described each star-wheel; Described rotor begins first to reduce gradually to the diameter of exhaust end from inlet end, then is cylindric; Be provided with 8 compression grooves on described rotor, described each compression groove carries out spiral from the outer wall that the inlet end of rotor begins to exhaust end along 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 the work engagement, there are 4 star-wheel teeth and epitrochanterian compression groove to be meshed on each star-wheel.
Preferably, the curve that the outer circumferential face projection of described epitrochanterian each compression groove forms 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 circular arc AC section on each compression groove is identical.
Preferably, described epitrochanterian circular cylinder shaped portion is provided with the energy adjustment guiding valve.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
The compression assembly with the screw-like rotor that compressor of the present invention is used, using same size structure star-wheel, in the situation of identical central distance, increased tooth number of star when being meshed with rotor, during operation, the same time has 4 star-wheel teeth to be meshed with rotor, increased compression stroke, thereby the base that has improved compressor holds approximately 1.88 times of elementary volumes, has increased approximately 1.48 times of compression ratios, thereby has effectively increased air displacement, efficient and the performance of compressor.
Description of drawings
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Accompanying drawing 2 is the rotor of existing single used in screw bolt refrigerant compressor compression assembly and the schematic diagram of star-wheel engagement;
Accompanying drawing 3 is the schematic diagram when in the compression assembly of existing single used in screw bolt refrigerant compressor, the work tooth of star-wheel is arranged in rotor;
Accompanying drawing 4 is schematic diagram of the rotor of the compression assembly used of compressor of the present invention;
Accompanying drawing 5 is the rotor of the compression assembly used of compressor of the present invention schematic diagram when being meshed state with star-wheel;
Accompanying drawing 6 is the work tooth of star-wheel in the compression assembly used of compressor of the present invention schematic diagram when being arranged in rotor;
Wherein: 1, rotor; 2, star-wheel.
Embodiment
Be depicted as accompanying drawing 4-6 the compression assembly with the screw-like rotor that a kind of compressor of the present invention is used, comprise rotor 1, two symmetrically arranged star-wheels 2, described 2 star-wheels 2 are engaged on respectively the both sides of rotor 1; Be provided with 11 star-wheel teeth on described each star-wheel 2; Described rotor 1 begins first to reduce gradually to the diameter of exhaust end from inlet end, then is cylindric; Be provided with 8 compression grooves (not marking) on described rotor 1, described each compression groove begins to exhaust end along rotor 1 outer wall from the inlet end of rotor 1 and carries out spiral; Rotor 1 begins to exhaust end from suction end, and the outer periphery diameter of its compression groove first reduces gradually, then to be intermediate curve cylindric, that in the middle of it, sectional view forms be one section circular arc 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 that the outer circumferential face projection of each compression groove on described rotor 1 forms 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 circular arc AC section on each compression groove is identical, and is a determined value; When star-wheel 2 and rotor 1 are in the work engagement, there is the compression groove on 4 star-wheel teeth and rotor 1 to be meshed on each star-wheel 2; Circular cylinder shaped portion on described rotor 1 is provided with energy adjustment guiding valve (not shown).
The compression assembly with the screw-like rotor that compressor of the present invention is used still uses the star-wheel of 11 the star-wheel teeth identical with tradition, and still being different from traditional rotor only has 6 compression grooves (seeing accompanying drawing 1,2), and its velocity ratio is 11/6; The rotor that the present invention adopts uses 8 compression grooves (seeing 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, the radius of supposing star-wheel is R1, the centre distance of rotor and star-wheel
, groove width
, its profile line upper air end straight line CD and air inlet end face CDM=65.455 ° of angle ∠, the radius that circular arc AC uses:
The circle radius that in the present invention, on the inlet end rotor, E is ordered:
The groove exradius of cathetus CD section of the present invention:
As shown in Figure 6, suppose that straight line NP is the cylindrical contour of compression groove of rotor of the compression assembly of traditional single used in screw bolt refrigerant compressor, star-wheel sweeps from the K point, and G scans out, and 6 compression grooves is arranged, radius
, use identical star wheel structure, centre distance, so the compression groove stroke of each groove of rotor by calculating the compression assembly can draw traditional single used in screw bolt refrigerant compressor:
In like manner for rotor of the present invention, 8 compression grooves are arranged, and above relative dimensions, can draw the compression groove stroke of each groove of rotor that the present invention adopts:
The screw rotor that uses due to the present invention has 8 grooves, traditional single used in screw bolt refrigerant compressor the rotor of compression assembly 6 compression grooves are arranged, rotor often turns around and all completes the groove number and take advantage of 2 compression, therefore total compression stroke increasing amount of the present invention
, so compression stroke increases obviously, according to gas equation:
, single screw bolt refrigerant of the present invention can obtain higher compression ratio as can be known, and its effect can equate with some two traditional pole compression.
According to accompanying drawing 6 and above calculating, 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 single used in screw bolt refrigerant compressor holds elementary volume:
The base with the compression groove of the rotor of the compression assembly of screw-like rotor that compressor of the present invention is used holds elementary volume:
If supposition rotor speed is n according to the air displacement formula:
The air displacement of existing single Spiral Lobe Refrigeration Compressor:
The air displacement of compressor of the present invention:
Nearly 1.88 times have been increased according to above calculating air displacement
Have according to the perfect gas compression process:
(wherein n is the changeable compression index, supposes n=1.13)
The compression groove of each rotor of rotor of the compression assembly of using for the refrigeration compressor of prior art supposes that suction pressure is P1, and exhaust pressure is P2, and during exhaust, volume is Vout, has
, the rotor suction pressure that the present invention uses is
, exhaust pressure is P2`, during exhaust, volume is
, have
, the exhaust pressure that promotes of the present invention and the exhaust pressure ratio of prior art:
The compression assembly with the screw-like rotor that compressor of the present invention is used, using same size structure star-wheel, in the situation of identical central distance, increased tooth number of star when being meshed with rotor, during operation, the same time has 4 star-wheel teeth to be meshed with rotor, increased compression stroke, thereby the base that has improved compressor holds approximately 1.88 times of elementary volumes, has increased approximately 1.48 times of compression ratios, thereby has effectively increased air displacement, efficient and the performance of compressor.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics; its purpose is to allow person skilled in the art scholar can understand content of the present invention and be implemented; can not limit protection scope of the present invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (4)
1. the compression assembly with the screw-like rotor that compressor is used, comprise rotor, two symmetrically arranged star-wheels, and described 2 star-wheels are engaged on respectively the both sides of rotor; It is characterized in that: be provided with 11 star-wheel teeth on described each star-wheel; Described rotor begins first to reduce gradually to the diameter of exhaust end from inlet end, then is cylindric; Be provided with 8 compression grooves on described rotor, described each compression groove carries out spiral from the outer wall that the inlet end of rotor begins to exhaust end along 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 the work engagement, there are 4 star-wheel teeth and epitrochanterian compression groove to be meshed on each star-wheel.
2. the compression assembly with the screw-like rotor used of compressor according to claim 1, it is characterized in that: the curve that the outer circumferential face projection of described epitrochanterian each compression groove forms is by straight line AF, straight line CD, and arc section AC forms.
3. the compression assembly with the screw-like rotor used of compressor according to claim 2, it is characterized in that: on described rotor, each compression groove has identical dimensional structure; The groove depth of the compression groove of the circular arc AC section on each compression groove is identical.
4. the compression assembly with the screw-like rotor used of according to claim 1 and 2 or 3 described compressors, it is characterized in that: described epitrochanterian circular cylinder shaped portion is provided with the 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN103122857A true CN103122857A (en) | 2013-05-29 |
| CN103122857B CN103122857B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
|---|
| 沈阳 等: "圆柱包络法形成的单螺杆压缩机啮合区的研究", 《制造技术与机床》 * |
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| CN103122857B (en) | 2015-11-18 |
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