CN101285470A - Screw rod of screw compressor - Google Patents
Screw rod of screw compressor Download PDFInfo
- Publication number
- CN101285470A CN101285470A CNA2008100619020A CN200810061902A CN101285470A CN 101285470 A CN101285470 A CN 101285470A CN A2008100619020 A CNA2008100619020 A CN A2008100619020A CN 200810061902 A CN200810061902 A CN 200810061902A CN 101285470 A CN101285470 A CN 101285470A
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- screw
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- screw rods
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- 239000011295 pitch Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
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Abstract
The invention relates to a screw of a screw-type compressor. The invention comprises two screws; one is a tripleheaded screw; the other is a six-headed screw; the screw profile of each head in the six-headed screw and the screw profile of each head in the tripleheaded screw have special line shapes. The screw has the advantages that: the screw is designed to have a short sealing line and good sealing performance, substantially increases the specific discharge and specific power of the compressor and has high efficiency, small noise, simple screw curve, convenient processing and low processing cost.
Description
Technical field
The present invention relates to the parts of compressor, particularly a kind of screw rod of twin-screw compressor.
Background technique
The screw molded lines of existing screw compressor is bull, the molded lines complexity.Such as, have plenty of four teeth to six teeth, have plenty of five teeth to six teeth.Each tooth is formed by reaching seven sections curves.As the GHH molded lines of Germany and the multiple Sheng molded lines in Taiwan.Because its number is many, the curve complexity, so processed complex, amount of finish is big, and the discharge capacity of all double-screw compressors is all little, and though gas transmission continuously, flow pulsation is little, and delivery pressure is low eventually, and specific discharge is little, and specific power is little, and overall efficiency is low.
Summary of the invention
Technical problem to be solved by this invention is the screw rod that a kind of screw compressor is provided at the deficiencies in the prior art, the molded lines of one root screw rod is six, and another root is three, makes its delivery pressure height, specific discharge, specific power big.
The present invention solves the problems of the technologies described above the technological scheme that is adopted:
A kind of screw rod of screw compressor comprises two screw rods, and wherein a screw rod is three screw rods, and another root screw rod is six screw rods; Every screw molded lines of six screw rods is identical, and evenly distributes along circumference, and wherein one by involute ab, circular arc line bc, and generalized cycloidal cd, involute de and circular arc line ef are linked in sequence and form; Wherein, involute ab is the conjugate curve of involute a ' b ' on three screw rods, circular arc line bc is to be the circular arc in the center of circle with the o1 point, its radius be the Outside radius of six screw rods and three screw rods the root radius sum 2/3rds, the o1 point is positioned on the elongation line of straight line oc, generalized cycloidal cd is conjugate curve of putting c ' on three screw rods, involute de is the conjugate curve of involute d ' e ' on three screw rods, circular arc line ef is to be the center of circle with a g, ge is the circular arc of radius, and some g is positioned on the pitch circle of six screw rods;
Every screw molded lines of three screw rods is identical, and evenly distributes along circumference, and wherein one by involute a ' b ', generalized cycloidal b ' h ', and circular arc line h ' c ', generalized cycloidal c ' d ', involute d ' e ' and circular arc line e ' f ' are linked in sequence and form; Wherein, involute a ' b ' is a basic circle with o ' a ', o ' b ' length be the Outside radius of six screw rods and three screw rods the root radius sum 1/3rd, generalized cycloidal b ' h ' is the conjugate curve of some b on six screw rods, circular arc line h ' c ' is to be the circular arc in the center of circle with the o2 point, its radius be the Outside radius of six screw rods and three screw rods the root radius sum 1/3rd, the o2 point is positioned on the straight line o ' c ', generalized cycloidal c ' d ' is the conjugate curve of some d on six screw rods, involute d ' e ' is a basic circle with o ' e ', o ' d ' length be the Outside radius of six screw rods and three screw rods the root radius sum 1/3rd, circular arc line e ' f ' is to be the center of circle with a g ', g ' e ' is the circular arc of radius, and some g ' is positioned on the pitch circle of three screw rods.
Further, described six twices that the screw rod Pitch radius is three screw rod Pitch radiuss, described six twices that the screw rod helical pitch is three screw rod helical pitches.
Further, described roundlet camber line ab and roundlet camber line de also can omit one of them, or both all omit.
Compared with prior art, the invention has the advantages that:
The screw rod potted line of design is shorter, good seal performance; Compressor specific discharge and specific power increase considerably, the efficient height, and noise is little; Screw curve is simple, and is easy to process, and processing cost is low.
Description of drawings
Fig. 1 is the longitudinal section view of six screw rods of the present invention;
Fig. 2 is the longitudinal section view of three screw rods of the present invention;
Fig. 3 is two screw rods illustrated in figures 1 and 2 engagement figure when doing to roll;
Fig. 4 is two screw rods illustrated in figures 1 and 2 pitch curve figure when doing to roll.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Fig. 1 shows the shape of six screw rod radial cross sections of the present invention, and every screw molded lines of six screw rods is identical, and evenly distributes along circumference, and wherein one by roundlet camber line ab, circular arc line bc, and conjugate curve cd, roundlet camber line de and oval camber line ea are linked in sequence and form; Wherein, roundlet camber line ab is to be the center of circle with the g point, and the circular arc that radius can freely be set, g point are positioned on the normal that b orders, circular arc line bc is to be the circular arc in the center of circle with the o1 point, its radius be the Outside radius of six screw rods and three screw rods the root radius sum 2/3rds, the o1 point is positioned on the elongation line of straight line oc, roundlet camber line de is to be the center of circle with the f point, the circular arc that radius can freely be set, the f point is positioned on the normal that d orders, and oval camber line ea major axis is straight line ea, and minor axis can freely be set; Roundlet camber line ab and roundlet camber line de also can omit one of them, or both all omit.
Fig. 2 shows the shape of three screw rod radial cross sections of the present invention, and every screw molded lines of three screw rods is identical, and evenly distributes along circumference, wherein one by conjugate curve a ' b ', circular arc line b ' c ', roundlet camber line c ' d ', conjugate curve d ' e ' and conjugate curve e ' a ' are linked in sequence and form; Wherein, circular arc line b ' c ' is to be the circular arc in the center of circle with the o2 point, its radius be the Outside radius of six screw rods and three screw rods the root radius sum 1/3rd, the o2 point is positioned on the straight line o ' c ', roundlet camber line c ' d ' is to be the center of circle with h ' point, the circular arc that radius can freely be set, h ' point is positioned on the straight line o ' c '.
When three screw rods and six screw rods with 2: 1 speed ratio when separately center of circle o ' and o rotate, six screw rod upper curve cd are three conjugate curve that the roundlet camber line c ' d ' on the screw rod forms on six screw rods, curve a ' b ' on three screw rods, curve d ' e ' and curve e ' a ' are respectively six roundlet camber line ab on the screw rod, the conjugate curve that roundlet camber line de and oval camber line ea form on three screw rods.
Six screw rod Pitch radiuss are twices of three screw rod Pitch radiuss, and six screw rod helical pitches are twices of three screw rod helical pitches, and the two screw rods rotation direction is opposite.
Fig. 3 shows the meshing relation of two screw rods correspondence of the present invention, the pitch curve of the circular arc line bc correspondence on six screw rods is three circular arc line b ' c ' on the screw rod, the pitch curve that roundlet camber line c ' d ' on three screw rods is corresponding is six conjugate curve cd on the screw rod, roundlet camber line ab on six screw rods, the pitch curve of roundlet camber line de and oval camber line ea correspondence is respectively three the conjugate curve a ' b ' on the screw rod, conjugate curve d ' e ' and conjugate curve e ' a '.
As shown in Figure 4, when two screw rods rolled relatively, six screw rods will form the space pitch curve on three screw rods, and three screw rods also can form corresponding pitch curve on six screw rods.Because it is continuous rotating, two pitch curves have been blocked the input cavity and the output cavity of compressor, and constantly push ahead, thereby produce pressurized gas.
The foregoing description is used for the present invention that explains, rather than limits the invention, and in the protection domain of know-why of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (3)
1, a kind of screw rod of screw compressor comprises two screw rods, and a screw rod is three screw rods, and another root screw rod is six screw rods; It is characterized in that:
Every screw molded lines of six screw rods is identical, and evenly distributes along circumference, and wherein one by roundlet camber line ab, circular arc line bc, and conjugate curve cd, roundlet camber line de and oval camber line ea are linked in sequence and form; Wherein, roundlet camber line ab is to be the center of circle with the g point, and the circular arc that radius can freely be set, g point are positioned on the normal that b orders, circular arc line bc is to be the circular arc in the center of circle with the o1 point, its radius be the Outside radius of six screw rods and three screw rods the root radius sum 2/3rds, the o1 point is positioned on the elongation line of straight line oc, roundlet camber line de is to be the center of circle with the f point, the circular arc that radius can freely be set, the f point is positioned on the normal that d orders, and oval camber line ea major axis is straight line ea, and minor axis can freely be set.
Every screw molded lines of three screw rods is identical, and evenly distributes along circumference, and wherein one by conjugate curve a ' b ', circular arc line b ' c ', and roundlet camber line c ' d ', conjugate curve d ' e ' and conjugate curve e ' a ' are linked in sequence and form; Wherein, circular arc line b ' c ' is to be the circular arc in the center of circle with the o2 point, its radius be the Outside radius of six screw rods and three screw rods the root radius sum 1/3rd, the o2 point is positioned on the straight line o ' c ', roundlet camber line c ' d ' is to be the center of circle with h ' point, the circular arc that radius can freely be set, h ' point is positioned on the straight line o ' c '.
2, the screw rod of a kind of screw compressor according to claim 1 is characterized in that: described six twices that the screw rod Pitch radius is three screw rod Pitch radiuss, described six twices that the screw rod helical pitch is three screw rod helical pitches.
3, the screw rod of a kind of screw compressor according to claim 1 is characterized in that: described roundlet camber line ab and roundlet camber line de also can omit one of them, or both all omit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100619020A CN101285470A (en) | 2008-05-09 | 2008-05-09 | Screw rod of screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100619020A CN101285470A (en) | 2008-05-09 | 2008-05-09 | Screw rod of screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101285470A true CN101285470A (en) | 2008-10-15 |
Family
ID=40057832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100619020A Pending CN101285470A (en) | 2008-05-09 | 2008-05-09 | Screw rod of screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101285470A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640628A (en) * | 2016-10-09 | 2017-05-10 | 广东技术师范学院 | Micro meshing clearance high-pressure screw pump |
| CN109209872A (en) * | 2018-09-17 | 2019-01-15 | 广东葆德科技有限公司 | A kind of cross-compound arrangement of water-lubricated compressor |
-
2008
- 2008-05-09 CN CNA2008100619020A patent/CN101285470A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640628A (en) * | 2016-10-09 | 2017-05-10 | 广东技术师范学院 | Micro meshing clearance high-pressure screw pump |
| CN109209872A (en) * | 2018-09-17 | 2019-01-15 | 广东葆德科技有限公司 | A kind of cross-compound arrangement of water-lubricated compressor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO JINGDA MACHINE-ELECTRIC SCIENCE + TECHNOLOG Free format text: FORMER OWNER: ZHENG LIANGCAI Effective date: 20100927 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315033 NINGBO JINGDA ELECTRICAL TECHNOLOGY CO., LTD., NO.191, CHANGYANG ROAD, HONGTANG TOWN, JIANGBEI DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE TO: 315033 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20100927 Address after: 315033 Zhejiang province Ningbo Hongtang town Jiangbei District Changyang Road No. 191 Applicant after: Ningbo Jingda Machine-Electric & Technology Co., Ltd. Address before: 315033 Zhejiang province Ningbo Hongtang town Jiangbei District No. 191 Changyang Road, Ningbo Jingda Electromechanical Technology Co. Ltd. Applicant before: Zheng Liangcai |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20081015 |