CN204402890U

CN204402890U - Oil spout supercharging rotor of helical lobe compressor

Info

Publication number: CN204402890U
Application number: CN201420777727.6U
Authority: CN
Inventors: 孙秋高; 邵昀泓; 章正伟
Original assignee: Zhejiang Institute of Communications
Current assignee: Zhejiang Institute of Communications
Priority date: 2014-12-09
Filing date: 2014-12-09
Publication date: 2015-06-17
Anticipated expiration: 2024-12-09

Abstract

The utility model discloses oil spout supercharging rotor of helical lobe compressor, comprise male rotor and female rotor, it is characterized in that: male rotor and female rotor bilateral asymmetric, the constituent curve of male rotor and female rotor is circular arc or arc envelope line, the gear ratio of positive and negative rotor is 5: 7, and the gap between male rotor and female rotor is 0.03 ~ 0.08mm.The utility model can increase rigidity, reduces transverse leakage, can increase the working life of rotor.

Description

Oil spout supercharging rotor of helical lobe compressor

Technical field

The utility model relates to the constructing technology field of rotor, particularly a kind of oil spout supercharging rotor of helical lobe compressor.

Background technique

Existing fuel injection helical lobe compressor, because the performance of molded lines of rotor determined, general exhaust pressure is no more than 16bar, wants the pressurized gas of more high pressure, and the normal way adopted uses a piston machine as pressure-increasing machine again.So general fuel injection helical lobe compressor can not make pressure-increasing machine and use.Current existing oil spout supercharging helical-lobe compressor in the world, its representative molded lines of rotor is mainly distributed in Germany, Sweden, TaiWan, China, Japan and other countries and area.And the main Problems existing of these technology has: in air inlet, under the operating mode that exhaust pressure is all higher, the rigidity of rotor of helical lobe compressor is not enough, and degree of disturbing is comparatively large, causes rotor axial to be out of shape serious; The gear ratio of female rotor and male rotor is 4: 5 or 5: 6, and the centre distance of rotor is relatively little, within the scope of the centre distance determined, arranges the insufficient space of bearing, causes that design has a lot of problem; The tooth comparision of rotor is thin, causes negative and positive rotor transmitting torque to be easy distortion; The contact line length of the rotor flank of tooth is longer, and transverse leakage is large; Leak triangle comparatively large, Longitudinal Leakage is large.

Summary of the invention

The utility model technical issues that need to address are to provide and a kind of strengthen rigidity, and root diameter is comparatively large, and rotor is shorter, and the number of teeth is more, leak few and noise low have oily supercharging rotor of helical lobe compressor.

For realizing the purpose of this utility model, intend by the following technical solutions:

Oil spout supercharging rotor of helical lobe compressor, comprise male rotor and female rotor, it is characterized in that: male rotor and female rotor bilateral asymmetric, the constituent curve of male rotor and female rotor is circular arc or arc envelope line, the gear ratio of positive and negative rotor is 5: 7, gap between male rotor and female rotor is 0.03 ~ 0.08mm, and with the center of male rotor for initial point, male rotor, female rotor have the coordinate of the actual molded line in gap as follows:

Compared with prior art, the utility model has following advantage:

One, rotor realizes the sealing of " curved surface is to curved surface " completely, remains good sealing between rotor, and the contact line length of the flank of tooth is short as much as possible, reduces transverse leakage; And leakage triangle area is less, be decreased through the Longitudinal Leakage of leakage triangle, improve the compression efficiency of compressor.

Two, adopt the ratio of male rotor and the female rotor number of teeth 5: 7, improve process time and the processibility of rotor, be convenient to adopt filing processing, improve work efficiency and correcting efficiency.

Three, female rotor tooth comparision is abundant, powerful, the good rigidly of female rotor, in female rotor opposite elongate situation, relatively more steady at the volley at a high speed, decrease the distortion such as Yin Wendu, vibrations and produces the possibility of killing.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model embodiment.

Embodiment

The technical solution of the utility model is further illustrated below in conjunction with drawings and Examples.

Composition graphs 1, the utility model relates to a kind of oil spout supercharging rotor of helical lobe compressor, comprise: male rotor 1 and female rotor 2, wherein, male rotor 1 and female rotor 2 bilateral asymmetric, its constituent curve is circular arc or arc envelope line, the number of teeth of male rotor 1 is 5, and the number of teeth of female rotor 2 is 7, and the gap between male rotor 1 and female rotor 2 is 0.06mm, with the center of male rotor 1 for initial point, the coordinate of male rotor 1 and female rotor 2 is:

The utility model can increase rigidity, reduces transverse leakage, can increase the working life of rotor.

Claims

1. oil spout supercharging rotor of helical lobe compressor, comprise male rotor and female rotor, it is characterized in that: male rotor and female rotor bilateral asymmetric, the constituent curve of male rotor and female rotor is circular arc or arc envelope line, the gear ratio of positive and negative rotor is 5: 7, gap between male rotor and female rotor is 0.03 ~ 0.08mm, and with the center of male rotor for initial point, male rotor, female rotor have the coordinate of the actual molded line in gap as follows: