Vane compressor

Abstract

Vane compressor capable of easily performing centering in the assembly of the vane compressor forming a housing by the combination of first and second housing members, the first housing member being formed by integrally forming a cylinder forming portion and a side block forming portion blocking one end side of the cylinder forming portion in the axial direction, the second housing member being formed by integrally forming a shell forming portion surrounding the outer peripheral surface of the first housing member and a front side block forming portion blocking the other end side of the cylinder forming portion in the axial direction. A plurality of contacting portions are provided between the first housing member and the second housing member at a predetermined interval in the axial direction of the driving shaft, and the contacting portions include a plurality of protrusions that protrude in the radial direction of the driving shaft and are arranged in the circumferential direction.

Description

Technical field [0001] The present invention relates to a technique for improving the accuracy of alignment (centering) of a bearing portion holding a drive shaft in the assembly of a vane type compressor. Background technique [0002] A general vane type compressor is constructed as follows: a cylindrical rotor accommodating vanes is fixed to a drive shaft that rotates under the driving force of an engine, etc., and the rotor is accommodated in a circular hole in a pressure cylinder with a sealing member (A member called a front cover, a rear cover, or a side block) closes the front and rear end surfaces of the pressure cylinder. In order to reduce the leakage of compressed gas to the adjacent compression chamber, the gap between the short diameter portion of the circular hole of the pressure cylinder and the outer diameter of the rotor needs to be set as small as possible. The sealing mechanism before and after the pressure cylinder is provided with a bearing for holding the d...

AI Technical Summary

Problems solved by technology

The inclination is corrected by the joint surfaces of the parts abutting against each other, but this correction cannot be said to be sufficient, and therefore core misalignment may sometimes occur between the two parts due to the inclination.

[0012] Furthermore, if a core misalignment occurs between the two parts, the rotor will be inclined to the sealing surface and sliding surface of the pressure cylinder and the side member, so the gap between the sealing parts cannot be maintained properly and the performance will be reduced. In addition, the sliding surface may be generated. Possibility of poor abrasion and sintering

[0013] In addition, when centering by dimples, it is considered to assemble the pressure cylinder so that it does not tilt, but it is very difficult to assemble the drive shaft in a vertical or horizontal state, and such work requires special alignment. Heart process, so there is a disadvantage of cost increase

Images