CN104564673A - End-surface tooth profiles for steam screw compressor - Google Patents

End-surface tooth profiles for steam screw compressor Download PDF

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Publication number
CN104564673A
CN104564673A CN201310484827.XA CN201310484827A CN104564673A CN 104564673 A CN104564673 A CN 104564673A CN 201310484827 A CN201310484827 A CN 201310484827A CN 104564673 A CN104564673 A CN 104564673A
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CN
China
Prior art keywords
point
tooth
circle
circular arc
rotor
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Pending
Application number
CN201310484827.XA
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Chinese (zh)
Inventor
严春
李勇进
肖文伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JINAN HAIYI FLUID TECHNOLOGY Co Ltd
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JINAN HAIYI FLUID TECHNOLOGY Co Ltd
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Priority to CN201310484827.XA priority Critical patent/CN104564673A/en
Publication of CN104564673A publication Critical patent/CN104564673A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/24—Fluid mixed, e.g. two-phase fluid
    • F04C2210/245—Vapour
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2250/00—Geometry
    • F04C2250/20—Geometry of the rotor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

The design of tooth profiles of rotors of a steam screw compressor is characterized in that the tooth profiles can be adapted to the high-temperature steam compression condition, thermal expansion deformation of the rotors is small and uniform, and the area utilization coefficients are as high as possible. The invention provides novel end-surface tooth profiles for the steam screw compressor. The tooth profiles are technically characterized in that the end-surface tooth profile of each rotor consists of six sections, namely, arc-shaped, oval and involute molded lines as well as envelope lines of the molded lines, the gear ratio of the female and male rotors is 5:6, every two adjacent sections of molded lines are in smooth transition at a connecting point, and the flow area is large. Particularly, involutes are added in the mold line configuration, so that the thermal expansion deformation of the tooth profiles is small and uniform, and the area utilization coefficients are increased.

Description

A kind of steam screw compressor end face serrate
1 technical field
The present invention relates to the key technology of steam helical-lobe compressor: the design of compressor profile of tooth.Steam helical-lobe compressor main application fields is, Food & Drink industry (evaporation of milk, whey, sugar juice), chemical industry (evaporation of the aqueous solution), salt industry (evaporation of salt solution), environment-protecting industrial (waste water concentrated) etc.
2 background techniquies
Under high-temperature steam compression working condition, the quality of helical-lobe compressor profile of tooth will directly have influence on performance and the stable operation of compressor.Whether helical-lobe compressor profile of tooth well can be applicable to high-temperature steam compression operating mode, depends primarily on the heat-resisting quantity of profile of tooth.Be in particular in the gear ratio of the kind of each section of shape line in profile of tooth and collocation, positive female rotor.The kind of each section of shape line and the difference of collocation in profile of tooth, by cause worst hot case lower toothed to be out of shape difference, area utilization factor difference.The difference of sun female rotor gear ratio, will cause the difference of worst hot case lower rotor part rigidity, the difference of area utilization factor.The difference of these mechanics parameters, geometric parameter, by the stability of the performance and operation that directly have influence on compressor.
3 summary of the invention
The present invention relates in steam rotor of helical lobe compressor chamber, the contrate tooth profile of a pair screw rotor of conjugation engagement running.
Task of the present invention is, design a kind of rotor profile of screw compressor that can be applicable to compress high-temperature steam, make rotor under high-temperature steam operating mode, thermal expansion deformation is little, even, when keeping enough rigidity, has larger area utilization factor.
On steam rotor of helical lobe compressor contrate tooth profile of the present invention, adopt pin tooth circular arc c 2d 2section, involute b 2c 2section, oval a 2b 2assembled scheme, relative to there is no the pin tooth circular arc of involute, oval assembled scheme, its advantage is the circumferencial direction width reducing single tooth, expand teeth groove area, add area utilization factor, thus under worst hot case, reduce the thermal expansion deformation of single tooth, also make thermal expansion deformation become even, reduce the tooth profile error under high temperature, make compressor energy stable operation under worst hot case.
On steam rotor of helical lobe compressor contrate tooth profile of the present invention, the gear ratio of positive and negative rotor adopts the scheme of 5:6.For the scheme of the little number of teeth, the gear ratio of such as positive and negative rotor is 3:4, and its profile of tooth rigidity is little, and under high-temperature steam operating mode, thermal expansion deformation is large.For the scheme of the large number of teeth, the gear ratio of such as positive and negative rotor is 6:8, and profile of tooth rigidity is better, but area utilization factor is less.And the gear ratio of positive and negative rotor of the present invention is the scheme of 5:6, taken into account the advantage of above-mentioned two schemes, make the rigidity of rotor better, thermal expansion deformation is less, and area utilization factor is larger.
4 accompanying drawing explanations
Fig. 1 is steam screw compressor rotor contrate tooth profile.
Steam screw compressor rotor contrate tooth profile according to Fig. 1, the molded line of female rotor (F) is by a 2b 2, b 2c 2, c 2d 2, d 2e 2, e 2f 2, f 2g 2six sections of compositions, the molded line of male rotor (M) is by a 1b 1, b 1c 1, c 1d 1, d 1e 1, e 1f 1, f 1g 1six sections of compositions.
The present invention adopts six sections of shape line composition yin, yang rotor end-face profiles of tooth respectively.Formed the profile of tooth series of the yin, yang rotor of helical-lobe compressor with the different size of yin, yang rotor centre distance A, the connection between each section of shape line is smooth transition.The shape line of female rotor (F) and male rotor (M) is composed as follows.
Shape line composition (see Fig. 1) of female rotor (F):
A 2b 2section: be oval, its major axis or minor axis drop on radius o 2a 2on.
B 2c 2section: be involute, the center of circle of its basic circle is o 2point, radius is o 2p 2.
C 2d 2section: be pin tooth circular arc, its center of circle is on node p.
D 2e 2section: be circular arc d 1e 1arc envelope line.
E 2f 2section: be that the center of circle is at o 3the circular arc of point.
F 2g 2section: the tooth top circular arc being one section of female rotor.
Shape line composition (see Fig. 1) of male rotor (M):
A 1b 1section: be the upper oval a of female rotor (F) 2b 2oval envelope curve.
B 1c 1section: be upper involute b with female rotor (F) 2c 2the involute of conjugation.
C 1d 1section: be pin tooth circular arc, pin tooth circular arc c, on node p, is gone up with female rotor (F) in its center of circle 2d 2section conjugation.
D 1e 1section: be that the center of circle is at o 4the circular arc of point.
E 1f 1section: be circular arc e 2f 2arc envelope line.
F 1g 1section: be that the center of circle is at o 1the circular arc of point, circular arc f upper with female rotor (F) 2g 2section conjugation.
The d of female rotor (F) 2e 2section and e 2f 2the tie point e of section 2point place, two curves have common tangent.E 2point is at female rotor pitch circle (F j) in, line segment o 2e 2length be chosen as 0.97R 2j~ 0.99R 2j.E 2f 2the center of circle o of section 3point is at pitch circle (F j) in.
The d of male rotor (M) 1e 1section and e 1f 1the tie point e of section 1on point, two curves have common tangent.Circular arc d 1e 1the radius d of section 1o 4the length of line segment is 0.1R1 ~ 0.2R 1.
Female rotor (F) and the circular arc c on male rotor (M) 2d 2section and c 1d 1radius (the R of section 1-R 1j) meet following condition: (R 1-R 1j)/R 2=0.43 ~ 0.55.
In addition, at the tie point place of the adjacent curve of yin, yang rotor not mentioned above, adjacent curve has common tangent, and namely all adjacent curves are all smooth transition
The centre distance of negative and positive rotor end-face profile of tooth is A.The male rotor number of teeth is 5, and the female rotor number of teeth is 6.Determine male rotor pitch circle M jradius R 1jwith female rotor pitch circle F jradius R 2j, the principle of institute's foundation is: A=R 1j+ R 2j, R 1j/ R 2j=5/6.Determine female rotor Outside radius R 2, the principle of foundation is: (R 2-R 2j)/R 2=0.02 ~ 0.03.Determine male rotor Outside radius R 1, the principle of foundation is: (R 1-R 1j)/R 2=0.43 ~ 0.55.
On steam rotor of helical lobe compressor contrate tooth profile of the present invention, pin tooth circular arc c 2d 2section, involute b 2c 2section, oval a 2b 2assembled scheme, relative to there is no the pin tooth circular arc of involute, oval assembled scheme, its advantage is the circumferencial direction width reducing single tooth, add area utilization factor, thus under worst hot case, reduce the thermal expansion deformation of single tooth, also make thermal expansion deformation become even, reduce the tooth profile error under high temperature, make compressor energy stable operation under worst hot case.
5 embodiments
Elaborate with regard to the structure of accompanying drawing to rotor end-face profile of tooth below.
Fig. 1 is steam screw compressor rotor contrate tooth profile.
Steam screw compressor rotor contrate tooth profile according to Fig. 1, the molded line of female rotor (F) is by a 2b 2, b 2c 2, c 2d 2, d 2e 2, e 2f 2, f 2g 2six sections of compositions, the molded line of male rotor (M) is by a 1b 1, b 1c 1, c 1d 1, d 1e 1, e 1f 1, f 1g 1six sections of compositions.
First, the centre distance A of negative and positive rotor end-face profile of tooth is determined.This patent selects the male rotor number of teeth to be 5, and the female rotor number of teeth is 6.Then, male rotor pitch circle M is determined jradius R 1jwith female rotor pitch circle F jradius R 2j, the principle of institute's foundation is: A=R 1j+ R 2j, R 1j/ R 2j=5/6.Then, female rotor Outside radius R is determined 2, the principle of foundation is: (R 2-R 2j)/R 2=0.02 ~ 0.03.Then, male rotor Outside radius R is determined 1, the principle of foundation is: (R 1-R 1j)/R 2=0.43 ~ 0.55.
At positive female rotor line of centres o 1o 2on, at positive top circle and line segment o 1o 2intersection point d 1with male rotor center o 1between, near d 1o is got near point 4point, makes d 1o 4the length of line segment is 0.1R 1~ 0.2R 1.Then, with o 4point is the center of circle, with d 1o 4line segment is radius, makes circular arc d 1e 1, e 1how the position of point is determined to illustrate below.
By male rotor pitch circle M jat female rotor pitch circle F jon make pure rolling, male rotor pitch circle M jspin velocity with revolution angular velocity ratio be 6/5, be cemented in the circular arc d on male rotor 1e 1track just can form an arc envelope line d 2e 2(see Fig. 1), wherein, e 2point and e 1point gearing, d 2point and d 1point gearing.E 2point is arc envelope line d 2e 2with the center of circle at o 2point radius is line segment o 2e 2the intersection point of long circular arc, line segment o 2e 2length be chosen as 0.97R 2j~ 0.99R 2j.E 2after some position is determined, e 1the position of point also just determines.
At e 2point makes d 2e 2the normal e of envelope 2o 3, at normal e 2o 3upper selection 1 o 3, make with o 3with line segment o centered by point 3e 2the circular arc e that length is done for radius 2f 2, with d 2e 2envelope is tangential on e 2point, is tangential on f with female rotor top circle 2point (see Fig. 1).Note, o 3point must drop on female rotor pitch circle F jin.Like this, the circular arc e in female rotor profile of tooth 2f 2section just determines.
Female rotor top circle selects one section of circular arc f 2g 2(see Fig. 1), circular arc f 2g 2arc length elect 0 ~ 1.5 millimeter as.
Cross o 2point makes radius o 2a 2(a 2point is on female rotor top circle), make radius o 2a 2with straight line o 2g 2angle be 60 ° (see Fig. 1).With female rotor pitch circle F jwith male rotor pitch circle M jintersection point p (node) be the center of circle, with line segment pd 1long is radius, makes circular arc c 2d 2(circular arc c 1d 1with circular arc c 2d 2overlap), make o 2c 2long is 0.7R 2~ 0.75R 2(c 1point and c 2point overlaps).
With o 2for circle is done in the center of circle, make this circle and pc 2line is tangential on p 2point (see Fig. 1), the basic circle being involute with this circle, with c 2point is the starting point of involute, makes involute c 2b 2, make o 2b 2long is 0.8R 1~ 0.85R 2.
Cross b 2, a 2point is done oval, makes oval major axis or minor axis drop on radius o 2a 2on, and make oval at b 2the normal of point and involute c 2b 2at b 2the normal of point overlaps (see Fig. 1).
So far, we complete the construction work of a unit profile of tooth in female rotor contrate tooth profile, and a unit profile of tooth comprises following six sections of profile of tooth: a 2b 2, b 2c 2, c 2d 2, d 2e 2, e 2f 2, f 2g 2.Whole female rotor contrate tooth profile is by 6 unit profiles of tooth, and along the circumferential direction periodic arrangement forms.
Set about now the construction work of male rotor contrate tooth profile.
Circular arc d 1e 1construction work, before complete.
By female rotor pitch circle F jat male rotor pitch circle M jon make pure rolling, female rotor pitch circle F jspin velocity with revolution angular velocity ratio be 5/6, be cemented in the circular arc e on female rotor 2f 2movement locus can form an arc envelope line e 1f 1(see Fig. 1).Wherein, f 1point and f 2point gearing, e 1point and e 2point gearing.Meanwhile, the circular arc f on female rotor is cemented in 2g 2movement locus can form an arc envelope line f 1g 1(see Fig. 1).Arc envelope line f 1g 1with o 1point is the circular arc in the center of circle.Meshing relation is: g 1point and g 2point gearing, f 1point and f 2point gearing.Meanwhile, the oval a on female rotor is cemented in 2b 2movement locus can form an oval envelope curve a 1b 1(see Fig. 1).Meshing relation is: a 1point and a 2point gearing, b 1point and b 2point gearing.Meanwhile, the involute b on female rotor is cemented in 2c 2movement locus can form an involute envelope b 1c 1(see Fig. 1), b 1c 1also be involute.Meshing relation is: c 1point and c 2point gearing, b 1point and b 2point gearing.
In addition, pin tooth circular arc c 1d 1construction work, before complete.
So far, we complete again the construction work of a unit profile of tooth in male rotor contrate tooth profile, and a unit profile of tooth comprises following six sections of profile of tooth: a 1b 1, b 1c 1, c 1d 1, d 1e 1, e 1f 1, f 1g 1.Whole male rotor contrate tooth profile is by 5 unit profiles of tooth, and along the circumferential direction periodic arrangement forms.
Like this, negative and positive rotor end-face profile of tooth has just been fully constructed out.

Claims (1)

1. a structure for steam screw compressor end face serrate, its feature is as follows:
First, the centre distance A of negative and positive rotor end-face profile of tooth is determined; This patent selects the male rotor number of teeth to be 5, and the female rotor number of teeth is 6; Then, male rotor pitch circle M is determined jradius R 1jwith female rotor pitch circle F jradius R 2j, the principle of institute's foundation is: A=R 1j+ R 2j, R 1j/ R 2j=5/6; Then, female rotor Outside radius R is determined 2, the principle of foundation is: (R 2-R 2j)/R 2=0.02 ~ 0.03; Then, male rotor Outside radius R is determined 1, the principle of foundation is: (R 1-R 1j)/R 2=0.43 ~ 0.55;
At positive female rotor line of centres o 1o 2on, at positive top circle and line segment o 1o 2intersection point d 1with male rotor center o 1between, near d 1o is got near point 4point, makes d 1o 4the length of line segment is 0.1R 1~ 0.2R 1; Then, with o 4point is the center of circle, with d 1o 4line segment is radius, makes circular arc d 1e 1, e 1how the position of point is determined hereafter illustrating;
By male rotor pitch circle M jat female rotor pitch circle F jon make pure rolling, male rotor pitch circle M jspin velocity with revolution angular velocity ratio be 6/5, be cemented in the circular arc d on male rotor 1e 1track just can form an arc envelope line d 2e 2, wherein, e 2point and e 1point gearing, d 2point and d 1point gearing; e 2point is arc envelope line d 2e 2with the center of circle at o 2point radius is line segment o 2e 2the intersection point of long circular arc, line segment o 2e 2length be chosen as 0.97R 2j~ 0.99R 2j; e 2after some position is determined, e 1the position of point also just determines;
At e 2point makes d 2e 2the normal e of envelope 2o 3, at normal e 2o 3upper selection 1 o 3, make with o 3with line segment o centered by point 3e 2the circular arc e that length is done for radius 2f 2, with d 2e 2envelope is tangential on e 2point, is tangential on f with female rotor top circle 2point; Note, o 3point must drop on female rotor pitch circle F jin; Like this, the circular arc e in female rotor profile of tooth 2f 2section just determines;
Female rotor top circle selects one section of circular arc f 2g 2, circular arc f 2g 2arc length elect 0 ~ 1.5 millimeter as;
Cross o 2point makes radius o 2a 2, a 2point, on female rotor top circle, makes radius o 2a 2with straight line o 2g 2angle be 60 °; With female rotor pitch circle F jwith male rotor pitch circle M jintersection point p be the center of circle, with line segment pd 1long is radius, makes circular arc c 2d 2, circular arc c 1d 1with circular arc c 2d 2overlap, make o 2c 2long is 0.7R 2~ 0.75R 2, c 1point and c 2point overlaps;
With o 2for circle is done in the center of circle, make this circle and pc 2line is tangential on p 2point, the basic circle being involute with this circle, with c 2point is the starting point of involute, makes involute c 2b 2, make o 2b 2long is 0.8R 2~ 0.85R 2;
Cross b 2, a 2point is done oval, makes oval major axis or minor axis drop on radius o 2a 2on, and make oval at b 2the normal of point and involute c 2b 2at b 2the normal of point overlaps;
Above-mentioned is exactly the structure of a unit profile of tooth in female rotor contrate tooth profile, and a unit profile of tooth comprises following six sections of profile of tooth: a 2b 2, b 2c 2, c 2d 2, d 2e 2, e 2f 2, f 2g 2; Whole female rotor contrate tooth profile is by 6 unit profiles of tooth, and along the circumferential direction periodic arrangement forms;
It is below the structure of male rotor contrate tooth profile;
Circular arc d 1e 1position, size, before described;
By female rotor pitch circle F jat male rotor pitch circle M jon make pure rolling, female rotor pitch circle F jspin velocity with revolution angular velocity ratio be 5/6, be cemented in the circular arc e on female rotor 2f 2movement locus can form an arc envelope line e 1f 1; Wherein, f 1point and f 2point gearing, e 1point and e 2point gearing; Meanwhile, the circular arc f on female rotor is cemented in 2g 2movement locus can form an arc envelope line f 1g 1; Arc envelope line f 1g 1with o 1point is the circular arc in the center of circle; Meshing relation is: g 1point and g 2point gearing, f 1point and f 2point gearing; Meanwhile, the oval a on female rotor is cemented in 2b 2movement locus can form an oval envelope curve a 1b 1; Meshing relation is: a 1point and a 2point gearing, b 1point and b 2point gearing; Meanwhile, the involute b on female rotor is cemented in 2c 2movement locus can form an involute envelope b 1c 1, b 1c 1also be involute; Meshing relation is: c 1point and c 2point gearing, b 1point and b 2point gearing;
In addition, pin tooth circular arc c 1d 1position, size, before described;
Above-mentioned is exactly the structure of a unit profile of tooth in male rotor contrate tooth profile, and a unit profile of tooth comprises following six sections of profile of tooth: a 1b 1, b 1c 1, c 1d 1, d 1e 1, e 1f 1, f 1g 1; Whole male rotor contrate tooth profile is by 5 unit profiles of tooth, and along the circumferential direction periodic arrangement forms;
It is exactly more than the entire infrastructure of the yin, yang rotor end-face profile of tooth of steam helical-lobe compressor of the present invention.
CN201310484827.XA 2013-10-16 2013-10-16 End-surface tooth profiles for steam screw compressor Pending CN104564673A (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106555753A (en) * 2015-09-29 2017-04-05 上海汉钟精机股份有限公司 The rotor set of high efficiency flute profile
WO2018054858A1 (en) * 2016-09-21 2018-03-29 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Assembly of screws for a screw compressor for a utility vehicle
CN108884832A (en) * 2016-04-19 2018-11-23 株式会社日立产机系统 Oil-cooled type screw compressor
CN111472974A (en) * 2020-04-16 2020-07-31 龙游恒益机械有限公司 Double-screw compressor
CN114278565A (en) * 2021-12-24 2022-04-05 上海诺通新能源科技有限公司 Rotor tooth form of double-screw compressor and forming method thereof

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GB1544595A (en) * 1976-09-27 1979-04-19 Kuehlautomat Veb Rotors for a meshing-screw fluid-machine
US4643654A (en) * 1985-09-12 1987-02-17 American Standard Inc. Screw rotor profile and method for generating
CN1248677A (en) * 1998-09-23 2000-03-29 复盛股份有限公司 Serrated form generation method for helical rotor
CN1676935A (en) * 2004-03-30 2005-10-05 李汗强 Rotor tooth profile for helical-lobe compressor
CN101082339A (en) * 2007-07-03 2007-12-05 浙江大学 Screw rod line of screw air compressor
CN101545488A (en) * 2008-03-28 2009-09-30 万晓青 End face tooth form of novel screw compressor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1544595A (en) * 1976-09-27 1979-04-19 Kuehlautomat Veb Rotors for a meshing-screw fluid-machine
US4643654A (en) * 1985-09-12 1987-02-17 American Standard Inc. Screw rotor profile and method for generating
CN1248677A (en) * 1998-09-23 2000-03-29 复盛股份有限公司 Serrated form generation method for helical rotor
CN1676935A (en) * 2004-03-30 2005-10-05 李汗强 Rotor tooth profile for helical-lobe compressor
CN101082339A (en) * 2007-07-03 2007-12-05 浙江大学 Screw rod line of screw air compressor
CN101545488A (en) * 2008-03-28 2009-09-30 万晓青 End face tooth form of novel screw compressor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106555753A (en) * 2015-09-29 2017-04-05 上海汉钟精机股份有限公司 The rotor set of high efficiency flute profile
CN108884832A (en) * 2016-04-19 2018-11-23 株式会社日立产机系统 Oil-cooled type screw compressor
CN108884832B (en) * 2016-04-19 2020-04-24 株式会社日立产机系统 Oil-cooled screw compressor
WO2018054858A1 (en) * 2016-09-21 2018-03-29 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Assembly of screws for a screw compressor for a utility vehicle
CN111472974A (en) * 2020-04-16 2020-07-31 龙游恒益机械有限公司 Double-screw compressor
CN111472974B (en) * 2020-04-16 2022-03-29 龙游恒益机械有限公司 Double-screw compressor
CN114278565A (en) * 2021-12-24 2022-04-05 上海诺通新能源科技有限公司 Rotor tooth form of double-screw compressor and forming method thereof

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Application publication date: 20150429