Electric rolling piston-type automobile air-conditioning compressor

Abstract

The invention relates to an electric rolling piston-type automobile air-conditioning compressor comprising a shell and an end cover sealing the shell. A motor with a main shaft and an air cylinder with a cylindrical inner wall are arranged in the shell. The main shaft hermetically extends into the air cylinder, and the part of the main shaft extending into the air cylinder is an eccentric column; the eccentric column is sleeved with a rolling piston with a cylindrical outer wall; the cylindrical outer wall of the rolling piston and the cylindrical inner wall of the air cylinder body are internally tangent, which ensures that space is formed between the cylindrical outer wall of the rolling piston and the cylindrical inner wall of the rolling piston, and the axes facing the main shaft on the air cylinder body is radically and glidingly provided with a slip sheet, and the slip sheet elastically and hermetically presses the cylindrical outer wall of the rolling piston, and thereby, the good seal is formed between the slip sheet and the cylindrical outer wall; meanwhile, the space is divided into a high-pressure cavity and a low-pressure cavity which are isolated with each other. The electric rolling piston-type automobile air-conditioning compressor has good sealing performance, simple structure, small vibration and stable operation; and moreover, the motor has high working efficiency.

Description

technical field [0001] The invention relates to an automobile air-conditioning compressor, in particular to an electric rolling piston type automobile air-conditioning compressor used for compressing refrigerant gas. Background technique [0002] As the new energy revolution at home and abroad continues to develop in depth, as an important part of the new energy revolution, the development of new energy vehicles has gradually entered people's vision and acceptance, and entered the field of people's consumption. [0003] Whether it is a pure electric vehicle or a hybrid vehicle, a compressor that is different from the original car air conditioner is required, that is, the power output from the car engine is driven by a pulley to drive the compressor to compress the refrigerant gas, and the battery is used as the power source. , drive the motor, and drive the compression mechanism to compress the new compressor of the refrigerant gas; new energy vehicles, especially cars, requ...

AI Technical Summary

Problems solved by technology

As far as the reciprocating compressor is concerned, it can be applied to a wide range of cooling capacity. It is relatively easy to process and cheap in cost. The disadvantage is that due to the reciprocating motion of the piston, the speed is limited, the number of parts is large, and there are many wearing parts. , high vibration and noise, etc.; and the rotary compressor, because of the rotary motion, can run at high speed and be directly connected with the high-speed prime mover, with few parts, light weight, simple structure, low noise and good durability, etc. The surface of the running parts is mostly in the shape of a curved surface. The processing and inspection of these curved surfaces are more complicated and require special equipment; Compressors tend to replace reciprocating compressors; at present, reciprocating compressors are still the most used in automotive air-conditioning compressors

However, since the shaft seal device cannot achieve absolutely reliable sealing, refrigerant leakage is unavoidable, which is a major disadvantage of compressors with open structures.

[0011] Generally speaking, the existing automobile air-conditioning compressors are all driven by the main engine of the automobile engine, and the speed of the compressor changes greatly due to the influence of the speed of the automobile engine, and the working conditions are very poor.

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