CN205172940U - Tridentate helical -lobe compressor's rotor terminal surface flute profile - Google Patents

Tridentate helical -lobe compressor's rotor terminal surface flute profile Download PDF

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Publication number
CN205172940U
CN205172940U CN201520868754.9U CN201520868754U CN205172940U CN 205172940 U CN205172940 U CN 205172940U CN 201520868754 U CN201520868754 U CN 201520868754U CN 205172940 U CN205172940 U CN 205172940U
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China
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circular arc
rotor
line
straight line
tooth
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CN201520868754.9U
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Chinese (zh)
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蔡宏
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Han Sen Machinery (shanghai) Co Ltd
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Han Sen Machinery (shanghai) Co Ltd
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Abstract

The utility model discloses a tridentate helical -lobe compressor's rotor terminal surface flute profile, including male rotor terminal surface flute profile and female rotor terminal surface flute profile, female rotor terminal surface flute profile and male rotor terminal surface flute profile form by seven sections lines end -to -end connection, wherein: the flute profile line of male rotor terminal surface and the flute profile line of female rotor terminal surface all include circular arc line, straight line and cycloid, the pitch radius of tridentate helical -lobe compressor's female rotor equals with the pitch radius of male rotor, the tooth top radius of the tooth's socket radius of female rotor, the tooth's socket radius of male rotor, female rotor and the tooth top radius of male rotor equal, and are the half the of female rotor pitch radius. Adopt the yin, yang rotor of this flute profile can realize exchanging, the weight of rotor is also lighter.

Description

A kind of rotor end-face flute profile of three tooth helical-lobe compressors
Technical field
The utility model relates to a kind of rotor end-face flute profile of three tooth helical-lobe compressors.
Background technique
The core technology of helical-lobe compressor is rotor design, and the quality of rotor flute profile directly determines the performance and reliability of compressor.The rotor flute profile gear ratio that current helical-lobe compressor is conventional mostly is 4/6 and 5/6 flute profile, and female rotor and the male rotor shape of these two kinds of flute profiles are inconsistent, can not exchange, but can adapt to very wide pressure range, by a large amount of for aerodynamic force and field of Refrigeration and Air-conditioning.Application along with helical-lobe compressor is extended to process gas and energy-conserving and environment-protective field, has occurred the operating mode of many low-pressures, large discharge, as power plant desulfurization blower fan, MVR device vapour compression machine etc.Conventional rotor flute profile is used for this type of operating mode, and there is the shortcomings such as the high and efficiency of cost is low, screw compression is confidential has competitive advantage in these fields, the theory needing employing brand-new is to optimize the rotor end-face flute profile of compressor.
Summary of the invention
Technical problem to be solved in the utility model is to provide the rotor end-face flute profile of the three tooth helical-lobe compressors that a kind of area utilization factor is large, suction and discharge orifice area is large, and adopt the yin, yang rotor of this flute profile can realize exchanging, the weight of rotor is also lighter.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A rotor end-face flute profile for three tooth helical-lobe compressors, comprises male rotor end face tooth type and female rotor end face tooth type, and female rotor end face tooth type and male rotor end face tooth type are formed by connecting by seven sections of lines head and the tail; Wherein: the flute profile line of male rotor end face and the flute profile line of female rotor end face include circular arc line, straight line and cycloid; The Pitch radius of the female rotor of three tooth helical-lobe compressors is equal with the Pitch radius of male rotor; The tooth top radius of the tooth slot radius of female rotor, the tooth slot radius of male rotor, female rotor is equal with the tooth top radius of male rotor, and is the half of female rotor Pitch radius.
The utility model at least has following technique effect:
1, the flute profile line of rotor of the present utility model have employed the combining form of circular arc line, straight line and cycloid, adopts flute profile of the present utility model, and yin, yang rotor can realize exchanging;
2, the tooth top radius of the male rotor of existing helical-lobe compressor and the tooth slot radius of female rotor approximately only have about 1/1 to five/10th of Pitch radius, and the tooth top radius of male rotor of the present utility model and the tooth slot radius of female rotor are the half of Pitch radius, thus have more large size utilization factor and suction and discharge orifice area, weight is also lighter.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment when engaging each other of the utility model female rotor and male rotor.
Fig. 2 is the male rotor end-tooth molded line schematic diagram according to the utility model one embodiment.
Fig. 3 is the female rotor end-tooth molded line schematic diagram according to the utility model one embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
The number of teeth of the number of teeth and male rotor that three tooth helical-lobe compressors described in the application refer to female rotor is the helical-lobe compressor of three.
Refer to Fig. 1 to Fig. 3.According to the rotor end-face flute profile of a kind of three tooth helical-lobe compressors of the utility model one embodiment, comprise male rotor end face tooth type and female rotor end face tooth type.Female rotor end face tooth type and male rotor end face tooth type are formed by connecting by seven sections of lines head and the tail; Wherein: the flute profile line of described male rotor end face and the flute profile line of described female rotor end face include circular arc line, straight line and cycloid; The Pitch radius of the female rotor F of three tooth helical-lobe compressors is equal with the Pitch radius of male rotor M; The tooth top radius of the tooth slot radius of female rotor F, the tooth slot radius of male rotor M, female rotor F is equal with the tooth top radius of male rotor M, and is the half of female rotor Pitch radius.The tooth slot radius of female rotor F, the tooth slot radius of male rotor M, the tooth top radius of female rotor F and the tooth top radius of male rotor M are r, and the Pitch radius of female rotor F and the Pitch radius of male rotor M are 2r, and the centre distance of female rotor F and male rotor M is 4r.The pitch circle of female rotor F and the pitch circle of male rotor M is represented respectively by two circles that dotted line is drawn in Fig. 1.
In the present embodiment, the flute profile line of male rotor end face comprises and being linked in sequence: circular arc A 1b 1, straight line B 1c 1, cycloid C 1d 1, circular arc D 1e 1, cycloid E 1f 1, straight line F 1g 1and circular arc G 1h 1; The flute profile line of female rotor end face comprises and being linked in sequence: circular arc A 2b 2, cycloid B 2c 2, straight line C 2d 2, circular arc D 2e 2, straight line E 2f 2, cycloid F 2g 2and circular arc G 2h 2.
In the flute profile line of described male rotor end face:
Circular arc A 1b 1with the some L on male rotor pitch circle 3for one section of circular arc that the center of circle, r are radius; R is the tooth slot radius of male rotor;
Straight line B 1c 1at starting point B 1place and circular arc A 1b 1tangent, straight line B 1c 1terminal C 1be positioned on the pitch circle of male rotor, straight line B 1c 1elongation line through the center O of male rotor 1;
Cycloid C 1d 1at starting point C 1place and straight line B 1c 1connect, at terminal D 1place and circular arc D 1e 1connect;
Circular arc D 1e 1be with node p be the center of circle, r be radius one section of circular arc, circular arc D 1e 1about tooth top summit O 3with male rotor center O 1between line O 3o 1symmetrically; In the drawings, line O 3o 1be and male rotor center O 1with female rotor center O 2between line O 1o 2overlap, in other words, tooth top summit O 3be positioned at line O 1o 2on;
Cycloid E 1f 1with cycloid C 1d 1about tooth top summit O 3with male rotor center O 1between line O 3o 1symmetrically;
Straight line F 1g 1at terminal G 1place and circular arc G 1h 1tangent, straight line F 1g 1elongation line through male rotor center O 1, straight line F 1g 1with straight line B 1c 1about tooth top summit O 3with male rotor center O 1between line O 3o 1symmetrically;
Circular arc G 1h 1with the some L on male rotor pitch circle 4for one section of circular arc that the center of circle, r are radius; Circular arc G 1h 1with circular arc A 1b 1about tooth top summit O 3with male rotor center O 1between line O 3o 1symmetrically; Circular arc G 1h 1terminal H 1the terminal of another tooth adjacent with this male rotor is connected.
In the flute profile line of described female rotor end face:
Circular arc A 2b 2with the some L on female rotor pitch circle 1for one section of circular arc that the center of circle, r are radius; Circular arc A 2b 2with the circular arc A on male rotor 1b 1conjugate curve each other; R is the tooth slot radius of male rotor;
Cycloid B 2c 2at starting point B 2place and circular arc A 2b 2connect, at terminal C 2place and straight line C 2d 2connect; Cycloid B 2c 2with the straight line B on male rotor 1c 1conjugate curve each other;
Straight line C 2d 2at terminal D 2place and circular arc D 2e 2tangent, straight line C 2d 2elongation line through the center O of female rotor 2; Straight line C 2d 2with the cycloid C on male rotor 1d 1conjugate curve each other;
Circular arc D 2e 2be with node p be the center of circle, r be radius one section of circular arc, circular arc D 2e 2about teeth groove summit O 4with female rotor center O 2between line O 4o 2symmetrically; In the drawings, line O 4o 2be and male rotor center O 1with female rotor center O 2between line O 1o 2overlap, in other words, teeth groove summit O 4be positioned at line O 1o 2on;
Straight line E 2f 2at starting point E 2place and circular arc D 2e 2tangent, terminal F 2be positioned on the pitch circle of female rotor; Straight line E 2f 2elongation line through the center O of female rotor 2; Straight line E 2f 2with straight line C 2d 2about teeth groove summit O 4with female rotor center O 2between line O 4o 2symmetrically; Straight line E 2f 2with the cycloid E on male rotor 1f 1conjugate curve each other;
Cycloid F 2g 2with cycloid B 2c 2about teeth groove summit O 4with female rotor center O 2between line O 4o 2symmetrically; Cycloid F 2g 2with the straight line F on male rotor 1g 1conjugate curve each other;
Circular arc G 2h 2with the some L on female rotor pitch circle 2for one section of circular arc that the center of circle, r are radius; Circular arc G 2h 2with circular arc A 2b 2about teeth groove summit O 4with female rotor center O 2between line O 4o 2symmetrically; Circular arc G 2h 2terminal H 2the terminal of another tooth adjacent with this female rotor is connected; Circular arc G 2h 2with the circular arc G on male rotor 1h 1conjugate curve each other.
In the specific implementation:
1, the flute profile of male rotor end face is first generated according to the following steps:
(1) first tooth curve A is generated 1b 1with G 1h 1: tooth curve A 1b 1with the some L on male rotor pitch circle 3for the center of circle, radius are the circular arc of r, O 1l 3with O 1, O 2between line O 1o 2angle be 60 °, A 1be positioned at line O 1l 3on.G 1h 1for circular arc, with circular arc A 1b 1about male rotor center O 1with female rotor center O 2between line O 1o 2symmetrically;
(2) tooth curve B is generated 1c 1, F 1g 1: tooth curve B 1c 1for straightway, with A 1b 1circular arc is tangent, B 1c 1elongation line by center O 1and and O 1, O 2between line O 1o 2angle be 30 °, some C 1be positioned on male rotor pitch circle.Tooth curve F 1g 1for straightway, with straightway B 1c 1about male rotor center O 1with female rotor center O 2between line O 1o 2symmetrically;
(3) tooth curve C is generated 1d 1with E 1f 1: tooth curve C 1d 1be one section with the straightway C on female rotor 2d 2the cycloid of conjugation, tooth curve E 1f 1for cycloid, with cycloid C 1d 1about male rotor center O 1with female rotor center O 2between line O 1o 2symmetrically;
(4) tooth curve D is generated 1e 1: tooth curve D 1e 1for centered by node p, radius be r circular arc, tooth curve D 1e 1about male rotor center O 1with female rotor center O 2between line O 1o 2symmetrically; PD 1with pE 1angle be 60 °.
2, the flute profile of female rotor end face is generated again according to the following steps:
(1) tooth curve D is generated 2e 2: tooth curve D 2e 2for centered by node p, the radius circular arc that is r, about male rotor center O 1with female rotor center O 2between line O 1o 2symmetrically; PD 2with pE 2angle 60 °;
(2) tooth curve C is generated 2d 2with E 2f 2: tooth curve C 2d 2for straightway, with circular arc D 2e 2be tangential on D 2point.Straightway C 2d 2elongation line by female rotor center O 2and and O 1, O 2between line O 1o 2angle be 30 °, some C 2be positioned on female rotor pitch circle.E 2f 2for straightway, with straightway C 2d 2about male rotor center O 1with female rotor center O 2between line O 1o 2symmetrically;
(3) tooth curve B is generated 2c 2with F 2g 2: B 2c 2be one section with male rotor on straightway B 1c 1the cycloid of conjugation, F 2g 2for cycloid, with cycloid B 2c 2about male rotor center O 1with female rotor center O 2between line O 1o 2symmetrically;
(4) tooth curve A is generated 2b 2with G 2h 2: tooth curve A 2b 2for so that pitch circle to put L 1for the center of circle, radius is the circular arc of r, A 2be positioned at line O 2l 1elongation line on, L 1o 2with O 1o 2angle be 60 °.G 2h 2for circular arc, with circular arc A 2b 2about male rotor center O 1with female rotor center O 2between line O 1o 2symmetrically.
Like this, the end face tooth type of screw compressor rotor has just been done out completely.In female rotor, the flute profile of three teeth is the same, and in male rotor, the flute profile of three teeth is also the same.By female rotor end face tooth type along O 2move to O 1, can overlap with male rotor end face tooth type, mean that negative and positive rotor can exchange.

Claims (4)

1. a rotor end-face flute profile for three tooth helical-lobe compressors, comprises male rotor end face tooth type and female rotor end face tooth type, it is characterized in that, described female rotor end face tooth type and male rotor end face tooth type are formed by connecting by seven sections of lines head and the tail; Wherein: the flute profile line of described male rotor end face and the flute profile line of described female rotor end face include circular arc line, straight line and cycloid; The Pitch radius of the female rotor of described three tooth helical-lobe compressors is equal with the Pitch radius of male rotor; The tooth top radius of the tooth slot radius of female rotor, the tooth slot radius of male rotor, female rotor is equal with the tooth top radius of male rotor, and is the half of female rotor Pitch radius.
2. the rotor end-face flute profile of a kind of three tooth helical-lobe compressors according to claim 1, is characterized in that, the flute profile line of male rotor end face comprises and being linked in sequence: circular arc A 1b 1, straight line B 1c 1, cycloid C 1d 1, circular arc D 1e 1, cycloid E 1f 1, straight line F 1g 1and circular arc G 1h 1;
The flute profile line of female rotor end face comprises and being linked in sequence: circular arc A 2b 2, cycloid B 2c 2, straight line C 2d 2, circular arc D 2e 2, straight line E 2f 2, cycloid F 2g 2and circular arc G 2h 2.
3. the rotor end-face flute profile of a kind of three tooth helical-lobe compressors according to claim 2, is characterized in that, in the flute profile line of described male rotor end face:
Circular arc A 1b 1with the some L on male rotor pitch circle 3for one section of circular arc that the center of circle, r are radius; R is the tooth slot radius of male rotor;
Straight line B 1c 1at starting point B 1place and circular arc A 1b 1tangent, straight line B 1c 1terminal C 1be positioned on the pitch circle of male rotor, straight line B 1c 1elongation line through the center O of male rotor 1;
Cycloid C 1d 1at starting point C 1place and straight line B 1c 1connect, at terminal D 1place and circular arc D 1e 1connect;
Circular arc D 1e 1be with node p be the center of circle, r be radius one section of circular arc, circular arc D 1e 1about tooth top summit O 3with male rotor center O 1between line O 3o 1symmetrically;
Cycloid E 1f 1with cycloid C 1d 1about tooth top summit O 3with male rotor center O 1between line O 3o 1symmetrically;
Straight line F 1g 1at terminal G 1place and circular arc G 1h 1tangent, straight line F 1g 1elongation line through male rotor center O 1, straight line F 1g 1with straight line B 1c 1about tooth top summit O 3with male rotor center O 1between line O 3o 1symmetrically;
Circular arc G 1h 1with the some L on male rotor pitch circle 4for one section of circular arc that the center of circle, r are radius; Circular arc G 1h 1with circular arc A 1b 1about tooth top summit O 3with male rotor center O 1between line O 3o 1symmetrically; Circular arc G 1h 1terminal H 1the terminal of another tooth adjacent with this male rotor is connected.
4. the rotor end-face flute profile of a kind of three tooth helical-lobe compressors according to Claims 2 or 3, is characterized in that, in the flute profile line of described female rotor end face:
Circular arc A 2b 2with the some L on female rotor pitch circle 1for one section of circular arc that the center of circle, r are radius; Circular arc A 2b 2with the circular arc A on male rotor 1b 1conjugate curve each other; R is the tooth slot radius of male rotor;
Cycloid B 2c 2at starting point B 2place and circular arc A 2b 2connect, at terminal C 2place and straight line C 2d 2connect; Cycloid B 2c 2with the straight line B on male rotor 1c 1conjugate curve each other;
Straight line C 2d 2at terminal D 2place and circular arc D 2e 2tangent, straight line C 2d 2elongation line through the center O of female rotor 2; Straight line C 2d 2with the cycloid C on male rotor 1d 1conjugate curve each other;
Circular arc D 2e 2be with node p be the center of circle, r be radius one section of circular arc, circular arc D 2e 2about teeth groove summit O 4with female rotor center O 2between line O 4o 2symmetrically;
Straight line E 2f 2at starting point E 2place and circular arc D 2e 2tangent, terminal F 2be positioned on the pitch circle of female rotor; Straight line E 2f 2elongation line through the center O of female rotor 2; Straight line E 2f 2with straight line C 2d 2about teeth groove summit O 4with female rotor center O 2between line O 4o 2symmetrically; Straight line E 2f 2with the cycloid E on male rotor 1f 1conjugate curve each other;
Cycloid F 2g 2with cycloid B 2c 2about teeth groove summit O 4with female rotor center O 2between line O 4o 2symmetrically; Cycloid F 2g 2with the straight line F on male rotor 1g 1conjugate curve each other;
Circular arc G 2h 2with the some L on female rotor pitch circle 2for one section of circular arc that the center of circle, r are radius; Circular arc G 2h 2with circular arc A 2b 2about teeth groove summit O 4with female rotor center O 2between line O 4o 2symmetrically; Circular arc G 2h 2terminal H 2the terminal of another tooth adjacent with this female rotor is connected; Circular arc G 2h 2with the circular arc G on male rotor 1h 1conjugate curve each other.
CN201520868754.9U 2015-11-03 2015-11-03 Tridentate helical -lobe compressor's rotor terminal surface flute profile Withdrawn - After Issue CN205172940U (en)

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CN201520868754.9U CN205172940U (en) 2015-11-03 2015-11-03 Tridentate helical -lobe compressor's rotor terminal surface flute profile

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105257537A (en) * 2015-11-03 2016-01-20 晗森机械（上海）有限公司 Rotor end face flute profile of three-tooth screw compressor
CN112032050A (en) * 2020-05-19 2020-12-04 宁波鲍斯能源装备股份有限公司 Screw pump rotor molded lines and have screw pump of this screw pump rotor molded lines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105257537A (en) * 2015-11-03 2016-01-20 晗森机械（上海）有限公司 Rotor end face flute profile of three-tooth screw compressor
CN105257537B (en) * 2015-11-03 2017-08-04 晗森机械（上海）有限公司 A kind of rotor end-face flute profile of three teeth helical-lobe compressor
CN112032050A (en) * 2020-05-19 2020-12-04 宁波鲍斯能源装备股份有限公司 Screw pump rotor molded lines and have screw pump of this screw pump rotor molded lines
CN112032050B (en) * 2020-05-19 2022-08-23 宁波鲍斯能源装备股份有限公司 Screw pump rotor molded lines and have screw pump of this screw pump rotor molded lines

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