CN205478297U - Screw compressor rotor - Google Patents
Screw compressor rotor Download PDFInfo
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- CN205478297U CN205478297U CN201521136010.4U CN201521136010U CN205478297U CN 205478297 U CN205478297 U CN 205478297U CN 201521136010 U CN201521136010 U CN 201521136010U CN 205478297 U CN205478297 U CN 205478297U
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- rotor
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- tooth curve
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Abstract
The utility model discloses a helical -lobe compressor's rotor, the rotor includes female rotor and male rotor, female rotor, male rotor molded lines are formed by connecting six sections profile of tooth curves of the four boundaries of a piece of land or a construction site are smooth, the curve includes oval arc, circular arc, kidney shape line and envelope. The utility model discloses a molded lines does not have the cusp, and the resistance loss is little, and vice leakage of rotor is lacked, and be efficient, be applicable to the different work condition occasion, and the rotor machining performance is good, can effectively reduce process time to it decreases to reduce cutter grinder.
Description
Technical field
This utility model relates to helical-lobe compressor field, particularly relates to the rotor of helical-lobe compressor.
Background technology
Helical-lobe compressor comprises the mutually conjugate helical rotor of at least two in casing, around each
Corresponding axis rotation process realizes engagement.The molded line of rotor refers in particular to be perpendicular to rotor gyroaxis
Cross section on formed rotor tooth have particular shape characteristics plane curve combination.Usually, turn
Concavely, the whole or overwhelming majority of molded line is positioned at the rotor of rotor pitch circle and is referred to as the moon turn sub-tooth
Son；Convexly, the rotor that the whole or overwhelming majority of molded line is positioned at outside rotor pitch circle claims rotor tooth
For male rotor.
In the second half in 20th century, asymmetric molded line has replaced symmetrical molded line, significantly improves screw compression
The volumetric efficiency of machine.The improvement of molded lines of rotor, both can improve the efficiency of compressor, improves compression
The reliability of machine, can improve again the processing characteristics of rotor, the research heat of Shi Ge screw rotor manufacturer
Point and emphasis.
Screw rotor molded line is typically by point, straight line, cycloid, circular arc, ellipse, involute, parabolic
The basic constituent curve such as line, hyperbola and the envelope composition being conjugated therewith.Constituent curve can be one
Splice on individual rotor, on another rotor, then form the envelope of conjugation；Can also cloudy,
Separately splicing in male rotor.
Being limited by computing capability, Earlier designs commonly used point one geroter set cooperation is the main structure of molded line
Become section.Although this first order curve calculates simple, it is widely used, but cusp is as whole cycloid
Product form point, also must match with corresponding single order point cycloid during real-world operation, easily wear and tear,
Causing leakage to increase, compressor efficiency declines.Although still there being patent to use point one cycloid combination at present,
But most of rotor uses the mode of smooth splicing, by ensureing that molded line single order is continuous, keep away
Exempt to form the cusp on groove face, the stable operation of highly-efficient processing and compressor to realize rotor.Point
The existence of point, can reduce manufacturability and the economy of process tool simultaneously, is to try one's best in modern designs
Avoid.
The purpose of existing molded lines of rotor related invention is to improve the efficiency that rotor is secondary, common hands mostly
Section is to increase between cog circulation area, reduces contact line length, reduces leakage triangle area etc..With
Extensive as rotor fine-processing technique of the universal of high accuracy rotor machining equipment, particularly grinding
Using, the design to molded lines of rotor proposes new requirement.For reaching to improve the operation of rotor pair simultaneously
Performance and the purpose of processing characteristics, because correlational study is less, still have a large amount of further design work
Need to carry out.
Utility model content
The present inventor is through constantly testing discovery, and (also known as nephroid (Nephroid) is kidney shape line
The one of generalized cycloidal, but it is different from the single order point cycloid of traditional sense, it is a kind of high-order (three rank)
Curve) and envelope there is no the secondary cusp of single order cycloid, such that it is able to avoid a little one curve/curved surface
Engagement；By Rational choice and design, it smooth is incorporated whole molded line, it is achieved curved surface is to curved surface
Engagement, thus reach to improve rotor pair runnability and the purpose of processing characteristics simultaneously.This practicality is new
Type is also made great efforts research based on this theory, active development, is firstly introduced kidney shape line as fundamental curve structure
Become part molded line, ultimately form molded line of the present utility model.
Technical problem to be solved in the utility model is to provide the rotor-type of a kind of helical-lobe compressor
Line, this molded lines of rotor is during yin, yang rotor engages each other, and smooth running, leakage is few, effect
Rate is high, and improves the processing characteristics of rotor, extends cutter life.
This utility model provides the rotor of a kind of helical-lobe compressor, described rotor include female rotor and
Male rotor, when described female rotor and male rotor respectively rotate with its axle, the profile of tooth of two rotors engages each other,
It is characterized in that:
The molded line of described female rotor and male rotor is formed by connecting by four sections, five sections or six sections of line smoothings,
Described curve includes elliptic arc, circular arc, kidney shape line and envelope thereof, and described each section of constituent curve is mutual
Do not interfere, and single order is continuous.
In the embodiment that the molded line of described female rotor and male rotor is formed by connecting by six sections of line smoothings
In, six sections of tooth curve compositions of each tooth of described female rotor, male rotor are as follows:
The first paragraph tooth curve A of described female rotor2B2, be one section of radius be r1Circular arc, the center of circle
O3It is positioned at female rotor pitch circle, is cut in A with female rotor outside circle2Point；The first paragraph of described male rotor
Tooth curve A1B1, for female rotor pitch circle along male rotor pitch circle make pure rolling time, by the of female rotor
One section of tooth curve A2B2Move the envelope of formed track, with male rotor tooth at the bottom of circle be cut in A1
Point；
The second segment tooth curve B of male rotor1C1, it is one section of kidney shape line, this kidney shape line and male rotor
First paragraph tooth curve A1B1In B1It is smoothly connected at Dian；The second segment tooth curve of female rotor
B2C2, for male rotor pitch circle along female rotor pitch circle make pure rolling time, by the second segment profile of tooth of male rotor
Curve B1C1Move the envelope of formed track, with female rotor first paragraph tooth curve A2B2In
B2It is smoothly connected at Dian；
3rd section of tooth curve C of female rotor2D2, be one section of radius be r2Circular arc, center of circle O5
It is positioned on the public point of contact of female rotor pitch circle and male rotor pitch circle, with the second segment tooth curve of female rotor
B2C2In C2Be smoothly connected at Dian, and with female rotor tooth at the bottom of circle be cut in D2Point；The 3rd of male rotor
Section tooth curve C1D1, for female rotor pitch circle along male rotor pitch circle make pure rolling time, by female rotor
3rd section of tooth curve C2D2Move the envelope of formed track, with the second segment profile of tooth of male rotor
Curve B1C1In C1It is smoothly connected at Dian, and is cut in D with male rotor outside circle1Point；
4th section of tooth curve D of male rotor1E1, be one section of radius be r3Circular arc, center of circle O6
It is positioned at straight line D1O5On, and be positioned at outside male rotor pitch circle, with the 3rd section of tooth curve of male rotor
C1D1In D1It is smoothly connected at Dian, and is tangential on D with male rotor outside circle1Point；The of female rotor
Four sections of tooth curve D2E2, for male rotor pitch circle along female rotor pitch circle make pure rolling time, by male rotor
The 4th section of tooth curve D1E1Move the envelope of formed track, with the 3rd section of tooth of female rotor
Sigmoid curves C2D2In D2Be smoothly connected at Dian, and with female rotor tooth at the bottom of circle be cut in D2Point；
5th section of tooth curve E of female rotor2F2, it is one section of elliptic arc, this elliptic arc major and minor axis divides
Not Wei p, q, center O7It is positioned at female rotor pitch circle, and is positioned at straight line O2F2On, F2O7For ellipse
Circular arc E2F2One of axis, with the 4th section of tooth curve D of female rotor2E2In E2At Dian smooth
Connect, and be cut in F with female rotor outside circle2Point；5th section of tooth curve E of male rotor1F1, for
Female rotor pitch circle along male rotor pitch circle make pure rolling time, by the 5th of female rotor the section of tooth curve E2F2
Move the envelope of formed track, with the 4th section of tooth curve D of male rotor1E1In E1Light at Dian
Slip, and with male rotor tooth at the bottom of circle be cut in F1Point；
6th section of tooth curve F of female rotor2G2, be one section of radius be rt2Circular arc, the center of circle is
O2, with the 5th section of tooth curve E of female rotor2F2In F2Be smoothly connected at Dian, and with female rotor tooth
Tip circle is cut in F2、G2Point；6th section of tooth curve F of male rotor1G1, for female rotor pitch circle along sun
When rotor pitch circle makees pure rolling, by the 6th of female rotor the section of tooth curve F2G2Move formed track
Envelope, with the 5th section of tooth curve E of male rotor1F1In F1Be smoothly connected at Dian, and with sun
At the bottom of rotor tooth, circle is cut in F1、G1Point.
In a specific embodiment, remove the 3rd section of tooth curve circular arc C of female rotor2D2,
Make invocation point C2With a D2Overlap, second segment tooth curve B2C2With the 4th section of tooth curve D2E2
At a C2(some D2) place is smooth connects；Meanwhile, the 3rd section of tooth curve circular arc of male rotor is removed
C1D1So that some C1With a D1Overlap, second segment tooth curve B1C1With the 4th section of tooth curve
D1E1At a C1(some D1) place is smooth connects；Now, female rotor and the rotor tooth of each tooth of male rotor
Shape is made up of five sections of tooth curves.
In a specific embodiment, removing the 3rd section of tooth curve circular arc C of female rotor2D2
With the 3rd section of tooth curve circular arc C of male rotor1D1On the basis of, remove the 6th section of profile of tooth song of female rotor
Line circular arc F2G2So that some F2With a G2Overlap, the 5th section of tooth curve E2F2With first paragraph tooth
Sigmoid curves A2B2At a F2(some G2, some A2) place is smooth connects；Meanwhile, male rotor the is removed
Six sections of tooth curve circular arc F1G1So that some F1With a G1Overlap, the 5th section of tooth curve E1F1
With first paragraph tooth curve A1B1At a F1(some G1, some A1) place is smooth connects；Now, cloudy
The rotor tooth form of rotor and each tooth of male rotor is made up of four sections of tooth curves.
In a specific embodiment, retaining the 3rd section of tooth curve circular arc C of female rotor2D2
With the 3rd section of tooth curve circular arc C of male rotor1D1On the basis of, remove the 6th section of profile of tooth song of female rotor
Line circular arc F2G2So that some F2With a G2Overlap, the 5th section of tooth curve E2F2With first paragraph tooth
Sigmoid curves A2B2At a F2(some G2, some A2) place is smooth connects；Meanwhile, male rotor the is removed
Six sections of tooth curve circular arc F1G1So that some F1With a G1Overlap, the 5th section of tooth curve E1F1
With first paragraph tooth curve A1B1At a F1(some G1, some A1) place is smooth connects；Now, cloudy
The rotor tooth form of rotor and each tooth of male rotor is made up of five sections of tooth curves.
In a specific embodiment, the described female rotor number of teeth is Z2, the female rotor number of teeth is Z1,
Meet Z2-Z1=0 or 1 or 2；Z1Take the positive integer between 2 to 8.
In a specific embodiment, described molded line both can be monolateral molded line, i.e. female rotor
Molded line is in female rotor pitch circle, and male rotor molded line is outside male rotor pitch circle；Can also be bilateral molded line,
I.e. female rotor molded line is distributed in female rotor pitch circle both sides, and male rotor molded line is distributed in male rotor pitch circle two
Side.
The beneficial effects of the utility model: each tooth curve smoothly transits, profile of tooth is without cusp, resistance
Loss is few, it is easy to forming oil film, the leakage of rotor pair is few, and efficiency is high.Rotor machining performance is good, can
Effectively reduce process time, and reduce tool wear.
Should be appreciated that aforementioned description substantially is exemplary illustration with follow-up detailed description and conciliates
Release, the restriction of content claimed to this utility model should not be used as.
The technical solution of the utility model and embodiment is further illustrated below in conjunction with accompanying drawing.
Accompanying drawing explanation
With reference to the accompanying drawing enclosed, the more purpose of this utility model, function and advantage will be by this realities
Described below with novel embodiment is illustrated, wherein:
Fig. 1 is molded line schematic diagram of the present utility model.In figure: subscript 1 represents that this point is male rotor
On point, subscript 2 represents that this point is the point on female rotor；O1、O2It is respectively male rotor and the moon turns
The centre of gyration of son；Letter A, B, C, D, E, F, G represent the end points of composition tooth curve；
rt1、rb1And rj1Represent radius of circle and pitch radius, r at the bottom of the radius of addendum of male rotor, tooth respectivelyt2、
rb2And rj2Represent radius of circle and pitch radius at the bottom of the radius of addendum of female rotor, tooth respectively；r1、r2、
r3Represent circular arc A respectively2B2、C2D2、D1E1Radius.
Fig. 2 illustrates kidney shape line segment B on male rotor molded line1C1Enlarged drawing.In figure, dashed graph has been
Whole kidney shape line, intercepts wherein one section of B1C1, with arc envelope line A1B1Smooth it is connected on a B1,
With circular arc C1D1Smooth it is connected on a C1。
Fig. 3 illustrates oval section E on female rotor molded line2F2Enlarged drawing.O in figure7For oval section E2F2
Center, O7F2For oval section E2F2One of axis of symmetry, length is designated as p, and normal thereto is another
One symmetrical shaft length is designated as q.
Fig. 4 illustrates the female rotor molded line envelope to male rotor molded line.
Fig. 5 illustrates the male rotor molded line envelope to female rotor molded line.
Fig. 6 illustrates that the male rotor number of teeth takes 5, and the female rotor number of teeth takes the molded lines of rotor of 6.
Fig. 7 illustrates that the male rotor number of teeth takes 5, and the female rotor number of teeth takes the rotor tomograph of 6.
Fig. 8 illustrates that the male rotor number of teeth takes 4, and the female rotor number of teeth takes the rotor tomograph of 6.
Fig. 9 illustrates that the male rotor number of teeth takes 6, and the female rotor number of teeth takes the rotor tomograph of 8.
Detailed description of the invention
By with reference to one exemplary embodiment, the purpose of this utility model and function and be used for realizing this
The method of a little purposes and function will be illustrated.But, this utility model is not limited to following institute
Disclosed one exemplary embodiment；By multi-form, it can be realized.The reality of description
Matter is only to help various equivalent modifications Integrated Understanding detail of the present utility model.
Hereinafter, embodiment of the present utility model will be described with reference to the drawings.In the accompanying drawings, identical
Reference represent same or similar parts, or same or similar step.
Below in conjunction with the accompanying drawings, detailed description of the invention of the present utility model is described.
Technical problem to be solved in the utility model is to provide the rotor-type of a kind of helical-lobe compressor
Line, this molded lines of rotor is during yin, yang rotor engages each other, and smooth running, leakage is few, effect
Rate is high, and improves the processing characteristics of rotor, extends cutter life.
For achieving the above object, this utility model adopts the following technical scheme that:
A kind of molded lines of rotor of helical-lobe compressor, including female rotor molded line and male rotor molded line, respectively with
When its axle rotates, the profile of tooth of two rotors engages each other；It is characterized in that: described female rotor and sun turn
Son molded line be formed by connecting by four sections, five sections or six sections of line smoothings, described curve include elliptic arc,
Circular arc, kidney shape line and envelope thereof, described each section of constituent curve is non-interference, and single order is continuous.
In a specific embodiment, it is each that it is further characterized by described yin, yang rotor
Six sections of tooth curve compositions of tooth are as follows:
The first paragraph tooth curve A of described female rotor2B2, be one section of radius be r1Circular arc, the center of circle
O3It is positioned at female rotor pitch circle, is cut in A with female rotor outside circle2Point；The first paragraph of described male rotor
Tooth curve A1B1, for female rotor pitch circle along male rotor pitch circle make pure rolling time, by the of female rotor
One section of tooth curve A2B2Move the envelope of formed track, with male rotor tooth at the bottom of circle be cut in A1
Point；
The second segment tooth curve B of male rotor1C1, it is one section of kidney shape line, this kidney shape line and male rotor
First paragraph tooth curve A1B1In B1It is smoothly connected at Dian；The second segment tooth curve of female rotor
B2C2, for male rotor pitch circle along female rotor pitch circle make pure rolling time, by the second segment profile of tooth of male rotor
Curve B1C1Move the envelope of formed track, with female rotor first paragraph tooth curve A2B2In
B2It is smoothly connected at Dian；
3rd section of tooth curve C of female rotor2D2, be one section of radius be r2Circular arc, center of circle O5
It is positioned on the public point of contact of female rotor pitch circle and male rotor pitch circle, with the second segment tooth curve of female rotor
B2C2In C2Be smoothly connected at Dian, and with female rotor tooth at the bottom of circle be cut in D2Point；The 3rd of male rotor
Section tooth curve C1D1, for female rotor pitch circle along male rotor pitch circle make pure rolling time, by female rotor
3rd section of tooth curve C2D2Move the envelope of formed track, with the second segment profile of tooth of male rotor
Curve B1C1In C1It is smoothly connected at Dian, and is cut in D with male rotor outside circle1Point；
4th section of tooth curve D of male rotor1E1, be one section of radius be r3Circular arc, center of circle O6
It is positioned at straight line D1O5On, and be positioned at outside male rotor pitch circle, with the 3rd section of tooth curve of male rotor
C1D1In D1It is smoothly connected at Dian, and is tangential on D with male rotor outside circle1Point；The of female rotor
Four sections of tooth curve D2E2, for male rotor pitch circle along female rotor pitch circle make pure rolling time, by male rotor
The 4th section of tooth curve D1E1Move the envelope of formed track, with the 3rd section of tooth of female rotor
Sigmoid curves C2D2In D2Be smoothly connected at Dian, and with female rotor tooth at the bottom of circle be cut in D2Point；
5th section of tooth curve E of female rotor2F2, it is one section of elliptic arc, this elliptic arc major and minor axis divides
Not Wei p, q, center O7It is positioned at female rotor pitch circle, and is positioned at straight line O2F2On, F2O7For ellipse
Circular arc E2F2One of axis, with the 4th section of tooth curve D of female rotor2E2In E2At Dian smooth
Connect, and be cut in F with female rotor outside circle2Point；5th section of tooth curve E of male rotor1F1, for
Female rotor pitch circle along male rotor pitch circle make pure rolling time, by the 5th of female rotor the section of tooth curve E2F2
Move the envelope of formed track, with the 4th section of tooth curve D of male rotor1E1In E1Light at Dian
Slip, and with male rotor tooth at the bottom of circle be cut in F1Point；
6th section of tooth curve F of female rotor2G2, be one section of radius be rt2Circular arc, the center of circle is
O2, with the 5th section of tooth curve E of female rotor2F2In F2Be smoothly connected at Dian, and with female rotor tooth
Tip circle is cut in F2、G2Point；6th section of tooth curve F of male rotor1G1, for female rotor pitch circle along sun
When rotor pitch circle makees pure rolling, by the 6th of female rotor the section of tooth curve F2G2Move formed track
Envelope, with the 5th section of tooth curve E of male rotor1F1In F1Be smoothly connected at Dian, and with sun
At the bottom of rotor tooth, circle is cut in F1、G1Point.
In a specific embodiment, remove the 3rd section of tooth curve circular arc C of female rotor2D2,
Make invocation point C2With a D2Overlap, second segment tooth curve B2C2With the 4th section of tooth curve D2E2
At a C2(some D2) place is smooth connects；Meanwhile, the 3rd section of tooth curve circular arc of male rotor is removed
C1D1So that some C1With a D1Overlap, second segment tooth curve B1C1With the 4th section of tooth curve
D1E1At a C1(some D1) place is smooth connects；Now, female rotor and the rotor tooth of each tooth of male rotor
Shape is made up of five sections of tooth curves.
In a specific embodiment, removing the 3rd section of tooth curve circular arc C of female rotor2D2
With the 3rd section of tooth curve circular arc C of male rotor1D1On the basis of, remove the 6th section of profile of tooth song of female rotor
Line circular arc F2G2So that some F2With a G2Overlap, the 5th section of tooth curve E2F2With first paragraph tooth
Sigmoid curves A2B2At a F2(some G2, some A2) place is smooth connects；Meanwhile, male rotor the is removed
Six sections of tooth curve circular arc F1G1So that some F1With a G1Overlap, the 5th section of tooth curve E1F1
With first paragraph tooth curve A1B1At a F1(some G1, some A1) place is smooth connects；Now, cloudy
The rotor tooth form of rotor and each tooth of male rotor is made up of four sections of tooth curves.
In a specific embodiment, retaining the 3rd section of tooth curve circular arc C of female rotor2D2
With the 3rd section of tooth curve circular arc C of male rotor1D1On the basis of, remove the 6th section of profile of tooth song of female rotor
Line circular arc F2G2So that some F2With a G2Overlap, the 5th section of tooth curve E2F2With first paragraph tooth
Sigmoid curves A2B2At a F2(some G2, some A2) place is smooth connects；Meanwhile, male rotor the is removed
Six sections of tooth curve circular arc F1G1So that some F1With a G1Overlap, the 5th section of tooth curve E1F1
With first paragraph tooth curve A1B1At a F1(some G1, some A1) place is smooth connects；Now, cloudy
The rotor tooth form of rotor and each tooth of male rotor is made up of five sections of tooth curves.
In a specific embodiment, the described female rotor number of teeth is Z2, the female rotor number of teeth is Z1,
Meet Z2-Z1=0 or 1 or 2；Z1Take the positive integer between 2 to 8.
Described molded line both can be monolateral molded line, and i.e. female rotor molded line is in female rotor pitch circle, and sun turns
Subtype line is outside male rotor pitch circle；Can also be bilateral molded line, i.e. female rotor molded line be distributed in cloudy turning
Sub-pitch circle both sides, male rotor molded line is distributed in male rotor pitch circle both sides.
Molded lines of rotor of helical lobe compressor described in the utility model refers to engage each other in helical-lobe compressor
Female rotor and the molded line of male rotor, described yin, yang rotor is by four to six sections of smooth companies of tooth curve
Connect and form；Specifically described herein it is smoothly connected that to refer both to single order between adjacent two sections of curves continuous, and mutually
Do not interfere.
Refer to Fig. 1, with male rotor centre of gyration O1Centered by, from outside to inside, make sun respectively
Circle at the bottom of rotor tooth tip circle, pitch circle, tooth, radius is respectively rt1、rj1And rb1；In turning round with female rotor
Heart O2Centered by, from outside to inside, make circle, radius at the bottom of female rotor outside circle, pitch circle, tooth respectively
It is respectively rt2、rj2And rb2.The tooth curve of male rotor is positioned over circle at the bottom of male rotor outside circle and tooth
Between, the tooth curve of female rotor is positioned at the bottom of female rotor outside circle and tooth between justifying.Pass through mould
Intend yin, yang rotor to engage each other, it may be determined that yin, yang molded lines of rotor.
Embodiment one:
Yin, yang molded lines of rotor is smoothly connected by six sections of tooth curves respectively and forms.
Wherein, the first paragraph tooth curve A of female rotor2B2, be one section of radius be r1Circular arc, circle
Heart O3It is positioned at female rotor pitch circle, is cut in A with female rotor outside circle2Point；The of described male rotor
One section of tooth curve A1B1, for female rotor pitch circle along male rotor pitch circle make pure rolling time, by female rotor
First paragraph tooth curve A2B2Move the envelope of formed track, with male rotor tooth at the bottom of circle be cut in
A1Point；
The second segment tooth curve B of male rotor1C1, it is one section of kidney shape line, this kidney shape line and male rotor
First paragraph tooth curve A1B1In B1It is smoothly connected at Dian；The second segment tooth curve of female rotor
B2C2, for male rotor pitch circle along female rotor pitch circle make pure rolling time, by the second segment profile of tooth of male rotor
Curve B1C1Move the envelope of formed track, with female rotor first paragraph tooth curve A2B2In
B2It is smoothly connected at Dian；
3rd section of tooth curve C of female rotor2D2, be one section of radius be r2Circular arc, center of circle O5
It is positioned on the public point of contact of female rotor pitch circle and male rotor pitch circle, with the second segment tooth curve of female rotor
B2C2In C2Be smoothly connected at Dian, and with female rotor tooth at the bottom of circle be cut in D2Point；The 3rd of male rotor
Section tooth curve C1D1, for female rotor pitch circle along male rotor pitch circle make pure rolling time, by female rotor
3rd section of tooth curve C2D2Move the envelope of formed track, with the second segment profile of tooth of male rotor
Curve B1C1In C1It is smoothly connected at Dian, and is cut in D with male rotor outside circle1Point；
4th section of tooth curve D of male rotor1E1, be one section of radius be r3Circular arc, center of circle O6
It is positioned at straight line D1O5On, and be positioned at outside male rotor pitch circle, with the 3rd section of tooth curve of male rotor
C1D1In D1It is smoothly connected at Dian, and is tangential on D with male rotor outside circle1Point；The of female rotor
Four sections of tooth curve D2E2, for male rotor pitch circle along female rotor pitch circle make pure rolling time, by male rotor
The 4th section of tooth curve D1E1Move the envelope of formed track, with the 3rd section of tooth of female rotor
Sigmoid curves C2D2In D2Be smoothly connected at Dian, and with female rotor tooth at the bottom of circle be cut in D2Point；
5th section of tooth curve E of female rotor2F2, it is one section of elliptic arc, this elliptic arc major and minor axis divides
Not Wei p, q, center O7It is positioned at female rotor pitch circle, and is positioned at straight line O2F2On, F2O7For ellipse
Circular arc E2F2One of axis, with the 4th section of tooth curve D of female rotor2E2In E2At Dian smooth
Connect, and be cut in F with female rotor outside circle2Point；5th section of tooth curve E of male rotor1F1, for
Female rotor pitch circle along male rotor pitch circle make pure rolling time, by the 5th of female rotor the section of tooth curve E2F2
Move the envelope of formed track, with the 4th section of tooth curve D of male rotor1E1In E1Light at Dian
Slip, and with male rotor tooth at the bottom of circle be cut in F1Point；
6th section of tooth curve F of female rotor2G2, be one section of radius be rt2Circular arc, the center of circle is
O2, with the 5th section of tooth curve E of female rotor2F2In F2Be smoothly connected at Dian, and with female rotor tooth
Tip circle is cut in F2、G2Point；6th section of tooth curve F of male rotor1G1, for female rotor pitch circle along sun
When rotor pitch circle makees pure rolling, by the 6th of female rotor the section of tooth curve F2G2Move formed track
Envelope, with the 5th section of tooth curve E of male rotor1F1In F1Be smoothly connected at Dian, and with sun
At the bottom of rotor tooth, circle is cut in F1、G1Point.
Can be formed respectively by the tooth curve of above-mentioned six sections of female rotors and the tooth curve of male rotor
The overall molded line of yin, yang rotor.
Embodiment two:
Yin, yang molded lines of rotor is smoothly connected by five sections of tooth curves respectively and forms.In embodiment one
On the basis of, remove the 3rd section of tooth curve circular arc C of female rotor2D2So that some C2With a D2Overlap,
Second segment tooth curve B2C2With the 4th section of tooth curve D2E2At a C2(some D2) the smooth phase in place
Connect；Meanwhile, the 3rd section of tooth curve circular arc C of male rotor is removed1D1So that some C1With a D1Weight
Close, second segment tooth curve B1C1With the 4th section of tooth curve D1E1At a C1(some D1) place's light
Slide and connect；Now, the rotor tooth form of female rotor and each tooth of male rotor is made up of five sections of tooth curves.
Embodiment three:
Yin, yang molded lines of rotor is smoothly connected by four sections of tooth curves respectively and forms.In embodiment two
On the basis of, remove the 6th section of tooth curve circular arc F of female rotor2G2So that some F2With a G2Overlap,
5th section of tooth curve E2F2With first paragraph tooth curve A2B2At a F2(some G2, some A2) place
Smooth connect；Meanwhile, the 6th section of tooth curve circular arc F of male rotor is removed1G1So that some F1And point
G1Overlap, the 5th section of tooth curve E1F1With first paragraph tooth curve A1B1At a F1(some G1、
Point A1) place is smooth connects；Now, the rotor tooth form of female rotor and each tooth of male rotor is by four sections of profiles of tooth
Curve forms.
Embodiment four:
Yin, yang molded lines of rotor is smoothly connected by five sections of tooth curves respectively and forms.In embodiment one
On the basis of, remove the 6th section of tooth curve circular arc F of female rotor2G2So that some F2With a G2Overlap,
5th section of tooth curve E2F2With first paragraph tooth curve A2B2At a F2(some G2, some A2) place
Smooth connect；Meanwhile, the 6th section of tooth curve circular arc F of male rotor is removed1G1So that some F1And point
G1Overlap, the 5th section of tooth curve E1F1With first paragraph tooth curve A1B1At a F1(some G1、
Point A1) place is smooth connects；Now, the rotor tooth form of female rotor and each tooth of male rotor is by five sections of profiles of tooth
Curve forms.
Molded line described in above-described embodiment one to embodiment four both can be monolateral molded line, i.e. female rotor
Molded line is in female rotor pitch circle, and male rotor molded line is outside male rotor pitch circle；Can also be bilateral molded line,
I.e. female rotor molded line is distributed in female rotor pitch circle both sides, and male rotor molded line is distributed in male rotor pitch circle two
Side.
Molded line described in above-described embodiment one to embodiment four can use different gear ratios.Cloudy turn
The sub-number of teeth is Z2, the male rotor number of teeth is Z1, meet Z2-Z1=0 or 1 or 2；Z1Take 2 to 8 it
Between positive integer.
Selecting the male rotor number of teeth is 5, and the female rotor number of teeth is 6, forms the enforcement shown in Fig. 6, Fig. 7
Example five.
Selecting the male rotor number of teeth is 4, and the female rotor number of teeth is 6, forms the embodiment six shown in Fig. 8.
Selecting the male rotor number of teeth is 6, and the female rotor number of teeth is 8, forms the embodiment seven shown in Fig. 9.
The above is some embodiments that this utility model is concrete, not for limiting this utility model.
Owing to this utility model constructing variable is numerous and chooses flexibly, it is impossible to list all this realities of employing
By novel molded lines of rotor embodiment.If the change made according to conception of the present utility model, not
Substantial improvement and adjustment, the content still contained without departing from this utility model, must be belonged to this
The protection domain of utility model；The screw rotor that molded line the most described in the utility model generates is applied to
The fields such as decompressor, vacuum pump, Roots blower and mixing pump.
Described accompanying drawing is only and schematically and not in scale draws.Although already in connection with being preferable to carry out
This utility model is described by example, it is to be understood that protection domain of the present utility model not office
It is limited to embodiment as described herein.
In conjunction with the explanation of the present utility model disclosed here and practice, of the present utility model other are implemented
Example is all easy to for those skilled in the art to expect and understand.Illustrate and embodiment is regarded only as
Being exemplary, true scope of the present utility model and purport are all defined in the claims.
Claims (10)
1. the rotor of a helical-lobe compressor, described rotor includes female rotor and male rotor, it is characterized in that: the molded line of described female rotor and male rotor is formed by connecting by four sections, five sections or six sections of line smoothings, described curve includes elliptic arc, circular arc, kidney shape line and envelope thereof, described each section of constituent curve is non-interference, and single order is continuous.
The rotor of helical-lobe compressor the most according to claim 1, it is characterised in that: the molded line of described yin, yang rotor is formed by connecting by six sections of line smoothings, and described six sections of tooth curves composition is as follows:
The first paragraph tooth curve A of described female rotor2B2, be one section of radius be r1Circular arc, center of circle O3It is positioned at female rotor pitch circle, is cut in A with female rotor outside circle2Point；The first paragraph tooth curve A of described male rotor1B1, for female rotor pitch circle along male rotor pitch circle make pure rolling time, by the first paragraph tooth curve A of female rotor2B2Move the envelope of formed track, with male rotor tooth at the bottom of circle be cut in A1Point；
The second segment tooth curve B of male rotor1C1, it is one section of kidney shape line, this kidney shape line and male rotor first paragraph tooth curve A1B1In B1It is smoothly connected at Dian；The second segment tooth curve B of female rotor2C2, for male rotor pitch circle along female rotor pitch circle make pure rolling time, by the second segment tooth curve B of male rotor1C1Move the envelope of formed track, with female rotor first paragraph tooth curve A2B2In B2It is smoothly connected at Dian；
3rd section of tooth curve C of female rotor2D2, be one section of radius be r2Circular arc, center of circle O5It is positioned on the public point of contact of female rotor pitch circle and male rotor pitch circle, with the second segment tooth curve B of female rotor2C2In C2Be smoothly connected at Dian, and with female rotor tooth at the bottom of circle be cut in D2Point；3rd section of tooth curve C of male rotor1D1, for female rotor pitch circle along male rotor pitch circle make pure rolling time, by the 3rd of female rotor the section of tooth curve C2D2Move the envelope of formed track, with the second segment tooth curve B of male rotor1C1In C1It is smoothly connected at Dian, and is cut in D with male rotor outside circle1Point；
4th section of tooth curve D of male rotor1E1, be one section of radius be r3Circular arc, center of circle O6It is positioned at straight line D1O5On, and be positioned at outside male rotor pitch circle, with the 3rd section of tooth curve C of male rotor1D1In D1It is smoothly connected at Dian, and is tangential on D with male rotor outside circle1Point；4th section of tooth curve D of female rotor2E2, for male rotor pitch circle along female rotor pitch circle make pure rolling time, by the 4th of male rotor the section of tooth curve D1E1Move the envelope of formed track, with the 3rd section of tooth curve C of female rotor2D2In D2Be smoothly connected at Dian, and with female rotor tooth at the bottom of circle be cut in D2Point；
5th section of tooth curve E of female rotor2F2, it is one section of elliptic arc, this elliptic arc major and minor axis is respectively p, q, center O7It is positioned at female rotor pitch circle, and is positioned at straight line O2F2On, F2O7For elliptic arc E2F2One of axis, with the 4th section of tooth curve D of female rotor2E2In E2It is smoothly connected at Dian, and is cut in F with female rotor outside circle2Point；5th section of tooth curve E of male rotor1F1, for female rotor pitch circle along male rotor pitch circle make pure rolling time, by the 5th of female rotor the section of tooth curve E2F2Move the envelope of formed track, with the 4th section of tooth curve D of male rotor1E1In E1Be smoothly connected at Dian, and with male rotor tooth at the bottom of circle be cut in F1Point；
6th section of tooth curve F of female rotor2G2, be one section of radius be rt2Circular arc, the center of circle is O2, with the 5th section of tooth curve E of female rotor2F2In F2It is smoothly connected at Dian, and is cut in F with female rotor outside circle2、G2Point；6th section of tooth curve F of male rotor1G1, for female rotor pitch circle along male rotor pitch circle make pure rolling time, by the 6th of female rotor the section of tooth curve F2G2Move the envelope of formed track, with the 5th section of tooth curve E of male rotor1F1In F1Be smoothly connected at Dian, and with male rotor tooth at the bottom of circle be cut in F1、G1Point.
3. according to the rotor of the helical-lobe compressor described in claim 2, it is characterised in that: remove the 3rd section of tooth curve circular arc C of female rotor2D2So that some C2With a D2Overlap, second segment tooth curve B2C2With the 4th section of tooth curve D2E2At a C2, put D2Locate smooth connecting；Meanwhile, the 3rd section of tooth curve circular arc C of male rotor is removed1D1So that some C1With a D1Overlap, second segment tooth curve B1C1With the 4th section of tooth curve D1E1At a C1, put D1Locate smooth connecting；Now, the rotor tooth form of female rotor and each tooth of male rotor is made up of five sections of tooth curves.
4. according to the rotor of the helical-lobe compressor described in claim 3, it is characterised in that: remove the 6th section of tooth curve circular arc F of female rotor2G2So that some F2With a G2Overlap, the 5th section of tooth curve E2F2With first paragraph tooth curve A2B2At a F2, put G2, put A2Locate smooth connecting；Meanwhile, the 6th section of tooth curve circular arc F of male rotor is removed1G1So that some F1With a G1Overlap, the 5th section of tooth curve E1F1With first paragraph tooth curve A1B1At a F1, put G1, put A1Locate smooth connecting；Now, the rotor tooth form of female rotor and each tooth of male rotor is made up of four sections of tooth curves.
5. according to the rotor of the helical-lobe compressor described in claim 2, it is characterised in that: remove the 6th section of tooth curve circular arc F of female rotor2G2So that some F2With a G2Overlap, the 5th section of tooth curve E2F2With first paragraph tooth curve A2B2At a F2, put G2, put A2Locate smooth connecting；Meanwhile, the 6th section of tooth curve circular arc F of male rotor is removed1G1So that some F1With a G1Overlap, the 5th section of tooth curve E1F1With first paragraph tooth curve A1B1At a F1, put G1, put A1Locate smooth connecting；Now, the rotor tooth form of female rotor and each tooth of male rotor is made up of five sections of tooth curves.
6. according to the rotor of the helical-lobe compressor described in claim 2, it is characterised in that: described molded line is monolateral molded line, and i.e. female rotor molded line is in female rotor pitch circle, and male rotor molded line is outside male rotor pitch circle；Or bilateral molded line, i.e. female rotor molded line is distributed in female rotor pitch circle both sides, and male rotor molded line is distributed in male rotor pitch circle both sides.
7. according to the rotor of the helical-lobe compressor described in any one of claim 2 to 6, it is characterised in that: the described female rotor number of teeth is Z2, the male rotor number of teeth is Z1, meet Z2-Z1=0 or 1 or 2；Z1Take the positive integer between 2 to 8.
8. according to the rotor of the helical-lobe compressor described in claim 7, it is characterised in that: the male rotor number of teeth is 5, and the female rotor number of teeth is 6.
9. according to the rotor of the helical-lobe compressor described in claim 7, it is characterised in that: the male rotor number of teeth is 4, and the female rotor number of teeth is 6.
10. according to the rotor of the helical-lobe compressor described in claim 7, it is characterised in that: the male rotor number of teeth is 6, and the female rotor number of teeth is 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521136010.4U CN205478297U (en) | 2015-12-31 | 2015-12-31 | Screw compressor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521136010.4U CN205478297U (en) | 2015-12-31 | 2015-12-31 | Screw compressor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205478297U true CN205478297U (en) | 2016-08-17 |
Family
ID=56662905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521136010.4U Withdrawn - After Issue CN205478297U (en) | 2015-12-31 | 2015-12-31 | Screw compressor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205478297U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930942A (en) * | 2015-12-31 | 2017-07-07 | 江森自控空调冷冻设备(无锡)有限公司 | Rotor of helical lobe compressor |
| CN110056506A (en) * | 2019-04-25 | 2019-07-26 | 余德林 | A kind of dry type oil free screw molded line and the air compressor using the screw rod |
-
2015
- 2015-12-31 CN CN201521136010.4U patent/CN205478297U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930942A (en) * | 2015-12-31 | 2017-07-07 | 江森自控空调冷冻设备(无锡)有限公司 | Rotor of helical lobe compressor |
| CN106930942B (en) * | 2015-12-31 | 2019-01-08 | 江森自控空调冷冻设备(无锡)有限公司 | Rotor of helical lobe compressor |
| CN110056506A (en) * | 2019-04-25 | 2019-07-26 | 余德林 | A kind of dry type oil free screw molded line and the air compressor using the screw rod |
| CN110056506B (en) * | 2019-04-25 | 2024-03-22 | 余德林 | Dry-type oilless screw molded line and air compressor adopting same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160817 Effective date of abandoning: 20190108 |