A scroll type automotive air-conditioning compressor

Abstract

A scroll type automotive air-conditioning compressor, wherein a crank pin (1) is fixedly connected to a main shaft (2), and a moving disc (3) is installed on the crank pin ( 1) above; it is characterized in that the crank pin includes two parallel sections along its longitudinal direction, and the center line (A1) of the two parallel sections is connected with the center distance between the main shaft and the crank pin (A2) The included angle is 0°~90°. The invention guarantees the radial sealing force between the dynamic and static discs of the scroll-type automobile air-conditioning compressor when it is running at low speed, thereby expanding the frequency range of the scroll-type automobile air-conditioning compressor; Vibration and noise, improve the stability of the radial meshing between the dynamic and static discs; reduce the processing and transfer accuracy of the crank pin, dynamic and The service life of parts such as disk needle roller bearings.

Description

technical field [0001] The invention relates to a scroll type automotive air-conditioning compressor with an eccentric sleeve adjusting mechanism. Background technique [0002] At present, the scroll type automotive air-conditioning compressor has the characteristics of novel and precise structure, small size, low noise, light weight, small vibration, low energy consumption, long life, continuous and stable gas transmission, reliable operation, and clean gas source. Widely used in the automotive industry. [0003] The scroll type automotive air-conditioning compressor is composed of two double-function equation-shaped moving and static scrolls meshing with each other. During the working process of suction, compression and exhaust, the static disk is fixed on the frame, and the movable disk is driven by the eccentric shaft and restricted by the anti-rotation mechanism, and rotates in a plane with a small radius around the center of the base circle of the static disk. The ga...

AI Technical Summary

Problems solved by technology

When the scroll type automotive air-conditioning compressor is running at low speed, due to the decrease of the centrifugal inertial force, the radial sealing force between the dynamic and static discs is often not guaranteed, resulting in a large leakage

[0006] 2. After the inner and outer surfaces of crank pin 1, eccentric sleeve 4, and the moving and static discs are worn, the retreat movement of the moving disc 3 and the return movement after retreat will cause aggravated vibration and noise, and the meshing state will further deteriorate

[0007] Due to the above deficiencies, the operating frequency range of the eccentric sleeve adjustment mechanism is narrow, the vibration and noise are large, and the overall reliability is poor, which limits the advantages of the scroll-type automotive air-conditioning compressor.

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