Twin-screw compressor rotor profile

A compressor rotor and twin-screw technology, applied to mechanical equipment, machines/engines, rotary piston pumps, etc., can solve problems such as noise and vibration, difficulty in implementation, and inflection points, so as to reduce noise and vibration, reduce The effect of aerodynamic drag and small leakage triangle

CN102052322AInactive Publication Date: 2011-05-11南通永力液压设备有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2011-05-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a twin-screw compressor rotor profile, wherein a two-side asymmetric profile is adopted, six sections of profiles are combined to form end face profiles of a female rotor and a male rotor, and the female rotor and the male rotor which are identical in central distance A and different in size are combined to a form a female / male rotor profile series of a screw compressor. An arc f2g2 with a certain radius and an arc envelope d2e2 at the addendum circle on the passive side of the female rotor end face profile are in smooth connection through taking a straight line e2f2 as a common tangent. The elliptic arc b1c1 on the male rotor end face profile is different from the ordinary arc pin tooth curve or the envelope and can enable the engagement and releasing of the male and female rotors to be more stable through properly adjusting the length ratio of the major and minor axes of the ellipse, so as to reduce noise and vibration. The included angle of the addendum arc c1d1 on the male rotor end face profile can be adjusted, and the addendum arc c1d1 is in tangent and smooth connection with both the elliptic arc b1c1 and an arc d1e1. The invention endows the rotors with the advantages of short contact line, small disclosed triangle, big flow passage area, streamlined rotor profile, reduced aerodynamic resistance and the like.
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Description

technical field

[0001] The invention relates to a screw compressor, in particular to a new screw rotor line suitable for a twin-screw compressor. Background technique

[0002] The quality of the end surface profile of the screw compressor will directly affect the performance of the screw compressor, such as sealing, efficiency, and area utilization coefficient. At present, the popular profiles on the market include GHH profiles, Hitachi profiles, and SRM profiles, all of which have their own characteristics.

[0003] Since the twin-screw compressor came out in the 1940s, it has developed rapidly and has been widely used in many fields. The update and development of the screw rotor profile is the main driving force for the development of twin-screw compressors. In the patent documents of various countries, screw rotor profiles emerge in endlessly, all for the purpose of improving efficiency and performance. The design of the screw rotor profile should usually consider the ...

Examples

Embodiment Construction

[0041] The construction of the twin-screw compressor rotor end profile of the present invention will be described in detail below in conjunction with the drawings and embodiments.

[0042] see figure 1 , The present invention provides a rotor profile of a twin-screw compressor. The profile below the center line in the figure is the profile of the active side, and the profile above the center line is the profile of the passive side.

[0043] The present invention adopts bilateral asymmetric molding lines, and the male and female rotor end surface molding lines are respectively composed of six sections of molding lines. The male and female rotor profile series of screw compressors are formed with the same center distance A and different sizes of female and male rotors. Among them, the molded line composition of the female rotor is as follows:

[0044] a 1 b 1 Segment: arc a 1 b 1 The dedendum circle of the front cut male rotor is at a 1 point, backcut ellipse arc b 1 c ...