A cold and hot air conditioner with oil-free circulating pipeline

Abstract

The invention relates to a cooling and heating air conditioner with oil-free circulating pipeline, which has a cooling and heating circulation loop, and the cooling and heating circulation loop includes a compressor; the compressor is an oil-gas separation compressor, and the compressor is composed of a The drive motor and the compression device connected with the drive motor are formed. The compression device is an eccentric rotor type compression structure. The eccentric rotor type compression structure has a cylinder body, a main shaft, an eccentric rotor, a first sliding assembly and a second sliding assembly. The first sliding assembly, the eccentric rotor and the second sliding assembly will work to compress The chamber is divided into a suction chamber, a lubricating oil chamber and a discharge chamber arranged in sequence and not communicating with each other. Because the compressor in the present invention adopts an oil-gas separation type compressor, the lubricating oil is separated from the refrigerant in the compressor, thus preventing the lubricating oil from adhering to the inner wall of the copper tube of the condenser and the evaporator. The heat exchange efficiency of the invented hot and cold air conditioner is greatly improved.

Description

technical field [0001] The invention belongs to the field of cooling and heating air conditioners, in particular to a cooling and heating air conditioner with oil-free circulating pipelines. Background technique [0002] The compressor plays a decisive role in performance in the existing air conditioner. Rotary compressors are widely used in the field of air conditioning due to their simple structure, reliable operation, and low cost. [0003] Existing rotary compressors use two lubrication methods for lubrication at the same time during operation. The first lubrication method is to deliver lubricating oil through an oil pump to achieve lubrication and sealing of the eccentric rotor, upper and lower end covers, and sliding baffles. However, using this This kind of lubricating method, only between the outer peripheral surface of the rotary sleeve and the inner wall of the cylinder body, the independent lubrication and sealing of the lubricating oil cannot be realized. There...

AI Technical Summary

Problems solved by technology

[0004] The air conditioner using the existing rotary compressor must have the following disadvantages during operation: (1), the lubricating oil is mixed in the compressor cylinder to occupy the volume of the compressor cavity element, because the volume of the compressor element is fixed, Relatively speaking, the space occupied by the refrigerant is correspondingly reduced, and for the same compressor, its refrigerant displacement is reduced; the higher the temperature of the compressor, the faster the lubricating oil vaporizes, and the larger the occupied space. The more lubricating oil that is taken away enters the pipeline; (2) Lubricating oil is viscous. When the compressor is working, the existence of lubricating oil will increase the damping of rotor rotation virtually, thereby increasing the power consumption of the compressor; (3) Lubricating oil and refrigerant mix and flow in the air conditioner pipeline, which will cause the lubricating oil to adhere to the inner wall of the copper tube to form an oil film insulation layer. The refrigerant needs to pass through the oil film insulation layer to perform heat exchange, so Will greatly affect the heat exchange of the refrigerant, thereby reducing the efficiency of the entire system

This is because the existing compressor cannot be reversed, because once the compressor is reversed, the oil in the system will enter the compressor and the compressor will not work

Images