Fixed-displacement compressor of automobile air conditioner

Abstract

The invention discloses a fixed-displacement compressor of an automobile air conditioner, which comprises a compressor body which is a main mounting and connecting structure of the device, a ring-free spraying piston is arranged on the top surface of the compressor body, and a fixed disc is arranged in the compressor body; a lug base which is located on the outer surface of the compressor body, and lifting lugs are annularly distributed on the outer surface of the lug base; a front cover which is located at the middle end of the compressor body, and a lubricating oil port is formed in the front cover; an output shaft which is located on the inner surface of the front cover, and the outer surface of one end of the output shaft is connected with a sliding bearing; and a shaft sealing device which is located on the outer surface of the front cover, and a clamping block is arranged in the shaft sealing device in advance. According to the fixed-displacement compressor of the automobile air conditioner, in the moving process of the piston rod, the rubber air bag can be continuously extruded to release internal pressure, lubricating oil and cooling liquid which are discharged from the front end of the cavity are burst away through impact force and are evenly distributed in the shaft sealing device, and therefore the operation stability of the shaft sealing device is further improved.

Description

technical field [0001] The invention relates to the technical field of automobile air conditioners, in particular to a fixed-displacement compressor for an automobile air conditioner. Background technique [0002] Automobile air-conditioning compressor is the heart of automobile air-conditioning refrigeration system, which plays the role of compressing and transporting refrigerant vapor. Compressors are divided into two types: non-variable displacement and variable displacement. It is a fixed-displacement compressor and a variable-displacement compressor. The rotary vane compressor is a kind of fixed-displacement compressor, and the shape of the internal cylinder is circular and elliptical. In a circular cylinder, the rotor There is an eccentric distance between the main shaft and the center of the cylinder, so that the rotor is close to the suction and exhaust holes on the inner surface of the cylinder. In the oval cylinder, the main shaft of the rotor coincides with the ce...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fixed-displacement compressor for an automobile air conditioner to solve the problem that the working environment of the shaft sealer of the automobile air conditioner compressor proposed in the above-mentioned background technology is relatively harsh, and the compressor is operated at high speed, high temperature, high pressure, or frequently switches between high and low speeds for a long time. , there are basically different degrees of compressor shaft seal leakage, and the lifting lugs of the automotive air-conditioning compressor are easily damaged due to the manufacturing errors of the compressor bracket and the compressor lifting lugs, as well as the deformation after tightening. Pull off the problem

Images