CN203321827U - High-efficiency double screw rod compressor rotor line - Google Patents

High-efficiency double screw rod compressor rotor line Download PDF

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Publication number
CN203321827U
CN203321827U CN2013203098661U CN201320309866U CN203321827U CN 203321827 U CN203321827 U CN 203321827U CN 2013203098661 U CN2013203098661 U CN 2013203098661U CN 201320309866 U CN201320309866 U CN 201320309866U CN 203321827 U CN203321827 U CN 203321827U
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China
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rotor
arc
tooth
circular arc
pitch circle
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CN2013203098661U
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杨剑
吴宇庆
李敏
党修成
顾小欢
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SHANGHAI QIYAO SCREW MACHINERY CO Ltd
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SHANGHAI QIYAO SCREW MACHINERY CO Ltd
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Abstract

The utility model discloses a high-efficiency double screw rod compressor rotor line. The high-efficiency double screw rod compressor rotor line is characterized in each tooth form of end surfaces of a female rotor and a male rotor is composed of at least seven sections of quadratic curves which are smoothly connected in an end-to-end mode, wherein each tooth curve of the end surface of the female rotor comprises an arc line, an arc envelope line and a cycloid; each tooth curve of the end surface of the male rotor comprises a dot, an arc line and an arc envelope line, the tooth curve of each tooth of the female rotor comprises a pin tooth arc A2B2, a cycloid B2C2 and an arc C2D2, an arc envelope line D2E2, an arc E2F2, an arc envelope line G2A2, and an arc H2G2 which are successively and smoothly connected, the seven sections of tooth curves of each tooth of the male rotor comprise a pin tooth arc A1B1, a dot B1, an arc envelope line B1C1, an arc C1D1, an arc envelope line D1E1, an arc G1A1 and an arc envelope line H1G1 which are successively and smoothly connected. The high-efficiency double screw rod compressor rotor line provided by the utility model has the advantages that a cuspidal point does not exist, the tooth-shaped area utilization factor is large, the leakproofness is good, and the high-efficiency double screw rod compressor rotor line can fully meet the long-term and stable operation requirements of a compressor group.

Description

A kind of efficient twin-screw compressor rotor profile
Technical field
The utility model relates to the rotor end-face flute profile of conjugation running in the helical-lobe compressor cavity, relates in particular to a kind of efficient twin-screw compressor rotor profile.
Background technique
Helical-lobe compressor belongs to rotary type displacement equipment, because it is simple in structure, few easy workout part, can be under the operating mode of large pressure difference or pressure ratio, delivery temperature is low, insensitive to containing a large amount of lubricant oil in refrigeration agent, good displacement modulability is arranged, can, under larger pressure versus flow scope, keep being turned round under efficient state, so application area be more and more extensive.
Helical-lobe compressor consists of pair of parallel, intermeshing yin, yang screw rod, is most widely used a kind of in rotary compressor.
In helical-lobe compressor, most critical be a pair of intermeshing rotor, the flank of tooth of rotor and rotor axis vertical surface obtain section line and are called molded lines of rotor.
Molded lines of rotor has significant impact to the performance of compressor, as the 4th die line improves closely 5% than third generation molded line efficiency, the measurement index of molded lines of rotor is mainly Line of contact, reveals triangle, enclosed volume, between cog area.The quality of molded lines of rotor is the principal element that affects the compressor operating performance.This technology is current enterprise energy saving, increases economic efficiency reasonable approach is provided.
Summary of the invention
The purpose of this utility model is: drawing on the basis that has helical-lobe compressor flute profile advantage both at home and abroad now, be combined and develop a kind of novel screw compressor rotor flute profile with how much Conjugate method with vector method, and draw out cutter, wherein profile of tooth comprises male rotor and the female rotor be meshed with it, their tooth curve is by circular arc, cycloid and arc envelope line are formed by connecting, compressor with this profile of tooth, realize in the course of the work optimal engagement owing to making male rotor and female rotor, adjacent two sections form the tooth curve in tie point place smooth transition, the rotor Line of contact is shorter, leakage triangle is smaller, become streamlined, aerodynamical resistance is little, there is good compressor heat mechanical property, thereby improve the working efficiency of compressor, and improve precision in course of working, extend the life-span of cutter.And, realized the sealing of curved surface to curved surface fully between rotor, contribute to form the hydrodynamic lubrication oil film, reduce by the horizontal leakage of Line of contact.
To achieve these goals, the technological scheme that the utility model is taked is: a kind of efficient twin-screw compressor rotor profile, and described double-screw compressor comprises male rotor and female rotor; Be characterized in, each profile of tooth of described female rotor and male rotor end face is smoothly connected and forms from beginning to end by least seven sections quadratic curves, and wherein: the tooth curve of described female rotor end face comprises circular arc line, and arc envelope line and cycloid form; The tooth curve of described male rotor end face comprises point, circular arc line and arc envelope line.
Above-mentioned a kind of efficient twin-screw compressor rotor profile, wherein, the tooth curve of described each tooth of female rotor comprises that successively the order is smoothly connected: pin tooth circular arc A 2B 2, cycloid B 2C 2, circular arc C 2D 2, arc envelope line D 2E 2, circular arc E 2F 2, arc envelope line G 2A 2, circular arc H 2G 2
Seven sections tooth curves of described each tooth of male rotor sequentially are smoothly connected successively: pin tooth circular arc A 1B 1, the some B 1, arc envelope line B 1C 1, circular arc C 1D 1, arc envelope line D 1E 1, circular arc G 1A 1, arc envelope line H 1G 1.
Above-mentioned a kind of efficient twin-screw compressor rotor profile, wherein: in the tooth curve of described each tooth of female rotor:
Pin tooth circular arc A 2B 2It is one section pin tooth circular arc on the female rotor pitch circle;
Cycloid B 2C 2The B by male rotor 1When rolling on the female rotor pitch circle, male rotor B relatively 1One section cycloid of the formed track of some motion;
Circular arc C 2D 2The O with female rotor pitch circle inside 4For one section circular arc that the radius of the center of circle, n1 times female rotor pitch circle (n1 be greater than 0.1, be less than or equal to 0.5 positive number) forms for radius, its starting point and cycloid B 2C 2Terminal be smoothly connected, terminal and female rotor arc envelope line D 2E 2Tangent connection;
Arc envelope line D 2E 2Be by the female rotor pitch circle when rolling on the male rotor pitch circle, male rotor C relatively 1D 1One section arc envelope line of the formed track of circular motion;
Circular arc E 2F 2The O with female rotor pitch circle inside 5For the center of circle, one section circular arc that the radius that radius is n2 times of female rotor pitch circle (n2 be greater than 0, be less than or equal to 0.01 positive number) forms, its starting point and arc envelope line D 2E 2Terminal be smoothly connected, terminal is connected with the starting point of adjacent another tooth of this female rotor;
Arc envelope line G 2A 2Be by the female rotor pitch circle when rolling on the male rotor pitch circle, male rotor G relatively 1A 1One section arc envelope line of the formed track of circular motion, its starting point and pin tooth circular arc A 2B 2Starting point be smoothly connected;
Circular arc H 2G 2The O with female rotor pitch circle inside 6For the center of circle, one section circular arc that the radius of n3 times of female rotor pitch circle (n3 be greater than 0, be less than or equal to 1 positive number) forms for radius, its starting point and arc envelope line G 2A 2Be smoothly connected, terminal is connected with the terminal of adjacent another tooth of this female rotor.
Above-mentioned a kind of efficient twin-screw compressor rotor profile, wherein: in each tooth curve of described each tooth of male rotor:
Pin tooth circular arc A 1B 1It is one section pin tooth circular arc on the male rotor pitch circle;
Male rotor tooth curve B 1For a bit, one section cycloid B of female rotor 2C 2Point B by this male rotor 1At formed track when rolling on the female rotor pitch circle, generate;
Arc envelope line B 1C 1Be by the male rotor pitch circle when rolling on the male rotor pitch circle, female rotor C relatively 2D 2One section arc envelope line of the formed track of circular motion;
Circular arc C 1D 1The O with male rotor pitch circle inside 7For the center of circle, the radius (n4 is as being greater than 0.1, being less than or equal to 0.5 positive number) of n4 times of male rotor pitch circle of take is one section circular arc that radius forms, its starting point and arc envelope line B 1C 1Be smoothly connected, terminal and male rotor arc envelope line D 1E 1Tangent;
Arc envelope line D 1E 1Be by the male rotor pitch circle when rolling on the female rotor pitch circle, female rotor D relatively 2E 2One section arc envelope line of the formed track of circular motion;
Circular arc G 1A 1The O with male rotor pitch circle inside 8For one section circular arc that the center of circle, the radius radius that is n5 times of male rotor pitch circle (n5 be greater than 0, be less than or equal to 1 positive number) forms, its starting point and circular arc A 1B 1Be smoothly connected terminal and circular arc G 1H 1Be smoothly connected;
Arc envelope line H 1G 1Be by the male rotor pitch circle when rolling on the female rotor pitch circle, female rotor H relatively 2G 2One section arc envelope line of the formed track of circular motion, the terminal of its terminal and adjacent another tooth is smoothly connected.
Above-mentioned a kind of efficient twin-screw compressor rotor profile, wherein, described female rotor also comprises one section quadratic curve F 2I 2, formed this circular arc F by one section tooth top circular arc 2I 2Starting point and circular arc E 2F 2Terminal be smoothly connected, the starting point of its terminal and adjacent another tooth is smoothly connected.
Above-mentioned a kind of efficient twin-screw compressor rotor profile, wherein, described male rotor also comprises one section quadratic curve E 1F 1, formed this circular arc E by one section tooth root circular arc 1F 1Starting point and arc envelope line D 1E 1Terminal be smoothly connected, the starting point of its terminal and adjacent another tooth is smoothly connected.
Above-mentioned a kind of efficient twin-screw compressor rotor profile, wherein, the pitch circle of described female rotor is greater than the pitch circle of male rotor.
Above-mentioned a kind of efficient twin-screw compressor rotor profile, wherein, the rotor flute profile of described female rotor and male rotor is asymmetric shape, and the number of teeth on described female rotor is more than the number of teeth on male rotor.
Above-mentioned a kind of efficient twin-screw compressor rotor profile, wherein, the number of teeth of described female rotor is 4, the number of teeth of described male rotor is 3.
The utility model is owing to adopting vector method to be combined and to develop a kind of novel screw compressor rotor flute profile with how much Conjugate method, and the molded line of comparing other rotors has advantages of following more outstanding:
Even due to the employing of female rotor of the present utility model larger tooth depth radius make like this area utilization factor larger but guaranteed enough rigidity, make the profile of tooth area utilization factor reach 67.6%, be very suitable for the compressor of the large flow of low-pressure ratio;
2. be smoothly connected between the molded line flank of tooth, on molded line, without cusp, be convenient to adopt gear hobbing processing and detect, make cutter life greatly increase;
3. before this profile of tooth, the flank of tooth has adopted circular arc and cycloid, and the rear flank of tooth has adopted circular arc and arc envelope line, makes Line of contact shorter, and in profile of tooth, the back flow side arc envelope line is long, and leakage triangle is relatively little like this, thereby makes sealing relatively good;
4. meet that Compressor Group is long-term, the stable operation requirement fully.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of example when intermeshing of the utility model female rotor and male rotor.
Fig. 2 is the teeth outline schematic diagram of female rotor in Fig. 1.
Fig. 3 is the teeth outline schematic diagram of male rotor in Fig. 1.
Fig. 4 is the schematic diagram of another kind of example when intermeshing of the utility model female rotor and male rotor.
Fig. 5 is the teeth outline schematic diagram of female rotor in Fig. 4.
Fig. 6 is the teeth outline schematic diagram of male rotor in Fig. 4.
In figure: O 1The axle center of male rotor, O 2It is the axle center of female rotor; M 1jThe cylindrical of male rotor, R 1jIt is the exradius of male rotor; M 2jThe cylindrical of female rotor, R 2jIt is the exradius of male rotor; A is the centre distance of two rotors, A=R 1j+ R 2jR 1The tooth top radius of a circle of male rotor, R 2It is female rotor tooth top radius of a circle; O 3It is node; O 3Female rotor pin tooth circular arc A 2B 2The center of circle, R 3Female rotor pin tooth circular arc A 2B 2With male rotor pin tooth circular arc A 1B 1Radius, equal the height of male rotor whole depth; O 4It is the female rotor circular arc C 2D 2The center of circle, R 4It is the female rotor circular arc C 2D 2Radius; O 5Female rotor circular arc E 2F 2The center of circle, R 5Female rotor circular arc E 2F 2Radius; O 6Female rotor pin tooth circular arc H 2G 2The center of circle, R 6Female rotor circular arc H 2G 2Radius; O 7It is the male rotor circular arc C 1D 1The center of circle, R 7It is the female rotor circular arc C 1D 1Radius.O 8Male rotor circular arc G 1A 1The center of circle, R 8Female rotor circular arc H 1G 1Radius.
Embodiment
Flute profile line below in conjunction with drawings and Examples to the utility model rotor of helical lobe compressor is described in detail:
Refer to Fig. 1～Fig. 3, this is a kind of embodiment's the structural representation of the flute profile line of the utility model rotor of helical lobe compressor, and wherein: Fig. 1 is the schematic diagram of a kind of example when intermeshing of the utility model female rotor and male rotor; Fig. 2 is the teeth outline schematic diagram of female rotor in Fig. 1; Fig. 3 is the teeth outline schematic diagram of male rotor in Fig. 1.The male rotor that the utility model rotor of helical lobe compressor is bilateral asymmetric flute profile and female rotor, the gear ratio of the male rotor described in the present embodiment and female rotor is for example 3:4.A kind of efficient twin-screw compressor rotor profile of the utility model, described double-screw compressor comprises male rotor M and female rotor F.Each profile of tooth of described female rotor and male rotor end face is smoothly connected and forms from beginning to end by least seven sections quadratic curves, and wherein: the tooth curve of described female rotor end face comprises circular arc line, and arc envelope line and cycloid form; The tooth curve of described male rotor end face comprises circular arc line and arc envelope line.In the present embodiment: seven sections tooth curves of described each tooth of female rotor sequentially are smoothly connected successively: pin tooth circular arc A 2B 2, cycloid B 2C 2, circular arc C 2D 2, arc envelope line D 2E 2, circular arc E 2F 2, arc envelope line G 2A 2, circular arc H 2G 2Seven sections tooth curves of each tooth of male rotor sequentially are smoothly connected successively: pin tooth circular arc A 1B 1, the some B 1, arc envelope line B 1C 1, circular arc C 1D 1, arc envelope line D 1E 1, circular arc G 1A 1, arc envelope line H 1G 1.
Please coordinate and consult Fig. 2.In the flute profile of a kind of double-screw compressor rotor of the utility model: in the tooth curve of described each tooth of female rotor:
Pin tooth circular arc A 2B 2It is one section pin tooth circular arc on the female rotor pitch circle;
Cycloid B 2C 2The B by male rotor 1When rolling on the female rotor pitch circle, male rotor B relatively 1One section cycloid of the formed track of some motion;
Circular arc C 2D 2With the O in female rotor pitch circle inside 4For the center of circle, think R 4One section circular arc that radius forms, this radius R 4It is the radius (n1 be greater than 0.1, be less than or equal to 0.5 positive number) of n1 times of female rotor pitch circle.This circular arc C 2D 2Starting point and cycloid B 2C 2Terminal be smoothly connected, terminal and female rotor arc envelope line D 2E 2Tangent connection;
Arc envelope line D 2E 2Be by the female rotor pitch circle when rolling on the male rotor pitch circle, male rotor C relatively 1D 1One section arc envelope line of the formed track of circular motion;
Circular arc E 2F 2The O with female rotor pitch circle inside 5For the center of circle, with R 5For one section circular arc that radius forms, this radius R 5For the radius of n2 times of female rotor pitch circle (n be 2 be greater than 0, be less than or equal to 0.01 positive number).Circular arc E 2F 2Starting point and arc envelope line D 2E 2Terminal be smoothly connected, terminal is connected with the starting point of adjacent another tooth of this female rotor;
Arc envelope line G 2A 2Be by the female rotor pitch circle when rolling on the male rotor pitch circle, male rotor G relatively 1A 1One section arc envelope line of the formed track of circular motion, its starting point and pin tooth circular arc A 2B 2Starting point be smoothly connected;
Circular arc H 2G 2The O with female rotor pitch circle inside 6For the center of circle, with R 6For one section circular arc that radius forms, this radius R 6It is the radius (n3 be greater than 0, be less than or equal to 1 positive number) of n3 times of female rotor pitch circle.Circular arc H 2G 2Starting point and arc envelope line G 2A 2Be smoothly connected, terminal is connected with the terminal of adjacent another tooth of this female rotor.
Please coordinate and consult Fig. 3.In the flute profile of a kind of double-screw compressor rotor of the utility model: in each tooth curve of described each tooth of male rotor:
Pin tooth circular arc A 1B 1It is one section pin tooth circular arc on the male rotor pitch circle;
Male rotor tooth curve B 1For a bit, one section cycloid B of female rotor 2C 2Point B by this male rotor 1At formed track when rolling on the female rotor pitch circle, generate;
Arc envelope line B 1C 1Be by the male rotor pitch circle when rolling on the male rotor pitch circle, female rotor C relatively 2D 2One section arc envelope line of the formed track of circular motion;
Circular arc C 1D 1The O with male rotor pitch circle inside 7For the center of circle, with R 7For one section circular arc that radius forms, this radius R 7For the radius of n4 times of male rotor pitch circle (n4 be greater than 0.1, be less than or equal to 0.5 positive number).This circular arc C 1D 1Starting point and arc envelope line B 1C 1Be smoothly connected, terminal and male rotor arc envelope line D 1E 1Tangent;
Arc envelope line D 1E 1Be by the male rotor pitch circle when rolling on the female rotor pitch circle, female rotor D relatively 2E 2One section arc envelope line of the formed track of circular motion;
Circular arc G 1A 1The O with male rotor pitch circle inside 8For the center of circle, with R 8For one section circular arc that radius forms, this radius R 8For the radius of n5 times of male rotor pitch circle (n5 be greater than 0, be less than or equal to 1 positive number).This circular arc G 1A 1Starting point and circular arc A 1B 1Be smoothly connected terminal and circular arc G 1H 1Be smoothly connected;
Arc envelope line H 1G 1Be by the male rotor pitch circle when rolling on the female rotor pitch circle, female rotor H relatively 2G 2One section arc envelope line of the formed track of circular motion, the terminal of its terminal and adjacent another tooth is smoothly connected.
In the specific implementation:
Described female rotor tooth curve A 2B 2Circular arc is the common one section circular arc determined of female rotor Pitch radius and pin tooth radius of a circle; Male rotor tooth curve A 1B 1Circular arc is exactly and female rotor tooth curve A 2B 2The one section circular arc circular arc conjugation, on male rotor.
Described male rotor tooth curve B 1For a bit, female rotor tooth curve B 2C 2Cycloid is to work as B 1When point is made pure rolling along female rotor pitch circle F, by male rotor B 1The point motion cycloid that forms, with C 2D 2Circular arc is connected.
Described female rotor tooth curve C 2D 2By the center of circle O in female rotor pitch circle inside 4, radius is R 4The one section circular arc formed, male rotor tooth curve B 1C 1Arc envelope line is when male rotor pitch circle M makes pure rolling along female rotor pitch circle F, by female rotor C 2D 2The envelope of the motion track that forms, with D 2E 2Circular arc is connected.
Described male rotor tooth curve C 1D 1By the center of circle O in male rotor pitch circle inside 8, radius is R 8The one section circular arc formed, female rotor tooth curve D 2E 2Arc envelope line is when female rotor pitch circle M makes pure rolling along female rotor pitch circle F, by male rotor C 1D 1The envelope of the motion track that forms, with E 2F 2Circular arc is connected.
Described male rotor tooth curve D 1E 1When male rotor pitch circle M makes pure rolling along female rotor pitch circle F, by female rotor E 2F 2The envelope of the motion track that forms.
Described male rotor tooth curve G 1A 1By the center of circle O in male rotor pitch circle inside 10, radius is R 10The one section circular arc formed, female rotor tooth curve G 2A 2Arc envelope line is when female rotor pitch circle M makes pure rolling along female rotor pitch circle F, by female rotor H 1A 1The envelope of the motion track that forms, with H 2G 2Circular arc is connected.
Described female rotor tooth curve H 2G 2By the center of circle O in female rotor pitch circle inside 6, radius is R 6The one section circular arc formed, male rotor tooth curve H 1G 1Arc envelope line is when male rotor pitch circle M makes pure rolling along female rotor pitch circle F, by female rotor H 2G 2The envelope of the motion track that forms, with H 1A 1Circular arc is connected.
Like this, the end face tooth type of screw compressor rotor has just been done out fully.
Refer to Fig. 4～Fig. 6, this is another kind of embodiment's the structural representation of the flute profile line of the utility model rotor of helical lobe compressor, and wherein: Fig. 4 is the schematic diagram of another kind of example when intermeshing of the utility model female rotor and male rotor; Fig. 5 is the teeth outline schematic diagram of female rotor in Fig. 4; Fig. 6 is the teeth outline schematic diagram of male rotor in Fig. 4.The present embodiment and above-described embodiment difference are: except the tooth curve by six sections circular arc character, one section cycloid character forms, also can respectively add a tooth top circular arc and a tooth root circular arc at the negative and positive rotor.Different size with centre distance forms the male rotor of helical-lobe compressor and the flute profile series of female rotor, and adjacent two sections form the tooth curve and have common tangent at the tie point place.
In the present embodiment, described female rotor also comprises one section quadratic curve F 2I 2, formed this circular arc F by the tooth top circular arc 2I 2Starting point and circular arc E 2F 2Terminal be smoothly connected, the starting point of its terminal and adjacent another tooth is smoothly connected.
Accordingly, described male rotor also comprises one section quadratic curve E 1F 1, formed this circular arc E by the tooth root circular arc 1F 1Starting point and arc envelope line D 1E 1Terminal be smoothly connected, the starting point of its terminal and adjacent another tooth is smoothly connected.
During concrete enforcement, can add that at male rotor tooth root place radius is R 9, the center of circle is O 1The tooth root circular arc, can add that at male rotor tooth top place radius is R 10, the center of circle is O 2The tooth top circular arc now the screw rod end face tooth type by eight sections tooth curves, formed.
The utlity model has on molded line without cusp, profile of tooth area utilization factor large (reaching 67.6%), the advantage of good airproof performance, because the utility model rotor has larger between cog area coefficient and the leakage triangle of less, therefore there is good thermodynamic property, can meet that Compressor Group is long-term, the stable operation requirement fully.Be very suitable for the compressor of mesolow ratio, large flow.

Claims (9)

1. an efficient twin-screw compressor rotor profile, described double-screw compressor comprises male rotor and female rotor; It is characterized in that, each profile of tooth of described female rotor and male rotor end face is smoothly connected and forms from beginning to end by least seven sections quadratic curves, wherein:
The tooth curve of described female rotor end face comprises circular arc line, and arc envelope line and cycloid form; The tooth curve of described male rotor end face comprises point, circular arc line and arc envelope line.
2. a kind of efficient twin-screw compressor rotor profile according to claim 1, is characterized in that,
The tooth curve of described each tooth of female rotor comprises that successively the order is smoothly connected: pin tooth circular arc A 2B 2, cycloid B 2C 2, circular arc C 2D 2, arc envelope line D 2E 2, circular arc E 2F 2, arc envelope line G 2A 2, circular arc H 2G 2
Seven sections tooth curves of described each tooth of male rotor sequentially are smoothly connected successively: pin tooth circular arc A 1B 1, the some B 1, arc envelope line B 1C 1, circular arc C 1D 1, arc envelope line D 1E 1, circular arc G 1A 1, arc envelope line H 1G 1.
3. a kind of efficient twin-screw compressor rotor profile according to claim 1 is characterized in that: in the tooth curve of described each tooth of female rotor:
Pin tooth circular arc A 2B 2It is one section pin tooth circular arc on the female rotor pitch circle;
Cycloid B 2C 2The B by male rotor 1When rolling on the female rotor pitch circle, male rotor B relatively 1One section cycloid of the formed track of some motion;
Circular arc C 2D 2The O with female rotor pitch circle inside 4One section circular arc that the radius that is n1 times of female rotor pitch circle for the center of circle, radius forms, its starting point and cycloid B 2C 2Terminal be smoothly connected, terminal and female rotor arc envelope line D 2E 2Tangent connection; Wherein, n1 is greater than 0.1, is less than or equal to 0.5 positive number;
Arc envelope line D 2E 2Be by the female rotor pitch circle when rolling on the male rotor pitch circle, male rotor C relatively 1D 1One section arc envelope line of the formed track of circular motion;
Circular arc E 2F 2The O with female rotor pitch circle inside 5For the center of circle, one section circular arc that the radius that radius is n2 times of female rotor pitch circle forms, its starting point and arc envelope line D 2E 2Terminal be smoothly connected, terminal is connected with the starting point of adjacent another tooth of this female rotor; Wherein, n2 is greater than 0, is less than or equal to 0.01 positive number;
Arc envelope line G 2A 2Be by the female rotor pitch circle when rolling on the male rotor pitch circle, male rotor G relatively 1A 1One section arc envelope line of the formed track of circular motion, its starting point and pin tooth circular arc A 2B 2Starting point be smoothly connected;
Circular arc H 2G 2The O with female rotor pitch circle inside 6For the center of circle, one section circular arc that the radius that radius is n3 times of female rotor pitch circle forms, its starting point and arc envelope line G 2A 2Be smoothly connected, terminal is connected with the terminal of adjacent another tooth of this female rotor; Wherein, n3 is greater than 0, is less than or equal to 1 positive number.
4. a kind of efficient twin-screw compressor rotor profile according to claim 1 is characterized in that: in each tooth curve of described each tooth of male rotor:
Pin tooth circular arc A 1B 1It is one section pin tooth circular arc on the male rotor pitch circle;
Male rotor tooth curve B 1For a bit, one section cycloid B of female rotor 2C 2Point B by this male rotor 1At formed track when rolling on the female rotor pitch circle, generate;
Arc envelope line B 1C 1Be by the male rotor pitch circle when rolling on the male rotor pitch circle, female rotor C relatively 2D 2One section arc envelope line of the formed track of circular motion;
Circular arc C 1D 1The O with male rotor pitch circle inside 7For the center of circle, the radius size of n4 times of male rotor pitch circle of take is one section circular arc that radius forms, its starting point and arc envelope line B 1C 1Be smoothly connected, terminal and male rotor arc envelope line D 1E 1Tangent; Wherein, n4 is greater than 0.1, is less than or equal to 0.5 positive number;
Arc envelope line D 1E 1Be by the male rotor pitch circle when rolling on the female rotor pitch circle, female rotor D relatively 2E 2One section arc envelope line of the formed track of circular motion;
Circular arc G 1A 1With the O in male rotor pitch circle inside 8One section circular arc that the radius that is n5 times of male rotor pitch circle for the center of circle, radius forms, its starting point and circular arc A 1B 1Be smoothly connected terminal and circular arc G 1H 1Be smoothly connected; Wherein, n5 is greater than 0, is less than or equal to 1 positive number;
Arc envelope line H 1G 1Be by the male rotor pitch circle when rolling on the female rotor pitch circle, female rotor H relatively 2G 2One section arc envelope line of the formed track of circular motion, the terminal of its terminal and adjacent another tooth is smoothly connected.
5. a kind of efficient twin-screw compressor rotor profile according to claim 1, is characterized in that, described female rotor also comprises one section quadratic curve F 2I 2, formed this circular arc F by one section tooth top circular arc 2I 2Starting point and circular arc E 2F 2Terminal be smoothly connected, the starting point of its terminal and adjacent another tooth is smoothly connected.
6. a kind of efficient twin-screw compressor rotor profile according to claim 4, is characterized in that, described male rotor also comprises one section quadratic curve E 1F 1, formed this circular arc E by one section tooth root circular arc 1F 1Starting point and arc envelope line D 1E 1Terminal be smoothly connected, the starting point of its terminal and adjacent another tooth is smoothly connected.
7. a kind of efficient twin-screw compressor rotor profile according to claim 1, is characterized in that, the pitch circle of described female rotor is greater than the pitch circle of male rotor.
8. a kind of efficient twin-screw compressor rotor profile according to claim 1, is characterized in that, the rotor flute profile of described female rotor and male rotor is asymmetric shape, and the number of teeth on described female rotor is more than the number of teeth on male rotor.
9. a kind of efficient twin-screw compressor rotor profile according to claim 8, is characterized in that, the number of teeth of described female rotor is 4, and the number of teeth of described male rotor is 3.
CN2013203098661U 2013-05-31 2013-05-31 High-efficiency double screw rod compressor rotor line Withdrawn - After Issue CN203321827U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103244428A (en) * 2013-05-31 2013-08-14 上海齐耀螺杆机械有限公司 High-efficiency rotor molded line of compressor with double screws
CN103982425A (en) * 2014-05-20 2014-08-13 上海齐耀螺杆机械有限公司 Tooth type of dry double-screw compressor rotor
CN105443380A (en) * 2015-12-22 2016-03-30 上海齐耀螺杆机械有限公司 Tooth form of rotor of twin-screw compressor
CN110080980A (en) * 2019-03-28 2019-08-02 中国石化工程建设有限公司 A kind of flute profile of dual-screw-stem machine rotor
CN112555152A (en) * 2020-10-30 2021-03-26 西安交通大学 Twisted-blade Roots rotor and design method thereof, compressor and expander
CN113027759A (en) * 2021-03-29 2021-06-25 西安交通大学 Variable-pitch inner-meshing double-screw compressor rotor and compressor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103244428A (en) * 2013-05-31 2013-08-14 上海齐耀螺杆机械有限公司 High-efficiency rotor molded line of compressor with double screws
CN103244428B (en) * 2013-05-31 2015-07-15 上海齐耀螺杆机械有限公司 High-efficiency rotor molded line of compressor with double screws
CN103982425A (en) * 2014-05-20 2014-08-13 上海齐耀螺杆机械有限公司 Tooth type of dry double-screw compressor rotor
CN105443380A (en) * 2015-12-22 2016-03-30 上海齐耀螺杆机械有限公司 Tooth form of rotor of twin-screw compressor
CN110080980A (en) * 2019-03-28 2019-08-02 中国石化工程建设有限公司 A kind of flute profile of dual-screw-stem machine rotor
CN110080980B (en) * 2019-03-28 2021-03-09 中国石化工程建设有限公司 Tooth profile of double-screw machine rotor
CN112555152A (en) * 2020-10-30 2021-03-26 西安交通大学 Twisted-blade Roots rotor and design method thereof, compressor and expander
CN113027759A (en) * 2021-03-29 2021-06-25 西安交通大学 Variable-pitch inner-meshing double-screw compressor rotor and compressor

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