Rotary compressor using R600a or R600 as main refrigerant and application

Abstract

The invention provides a rotary compressor using R600a or R600 as a main refrigerant and application. The R600a or R600 refrigerant serves as a main compressed medium. The rotary compressor comprises a closed shell, a motor and a pump body. Lubricating oil is stored in bottom space of the shell. In order to reduce the viscous resistance loss generated by the lubricating oil in all friction pairs of the rotary compressor, meanwhile, the lubricating performance and the sealing performance are ensured, analysis is carried out in combination with the working condition and the specific structure of the rotary compressor, an effective lubricating scheme is put forward, the viscosity level of the lubricating oil is ISO8-ISO32, and namely, at temperature of 40 DEG C, viscosity ranges from 8 cSt to 32 cSt. For the suction and exhausting pressure difference in the working condition of a specific circulating system and different backpressure structures, the viscosity scheme of the lubricating oil of the specific structure is optimized. The efficient rotary compressor which can carry out effective lubricating and reduce the viscous resistance loss of the lubricating oil is provided for systems such as a refrigerator, a freezer, a cold storage display stand or a beverage dispenser.

Description

technical field [0001] The invention relates to a rotary compressor, in particular to a refrigerator or freezer system, mainly using R600a or R600 refrigerant as the compressed medium, which can effectively ensure the lubrication and sealing of the moving parts of the compressor, and at the same time reduce the loss of lubricating oil. Efficient rotary compressors and applications for viscous drag losses. Background technique [0002] At present, due to the industrial discharge of freon refrigerants, the world is suffering from various serious environmental problems such as the hole in the ozone layer and the greenhouse effect. In order to reduce the emission of chlorine and fluorine atoms in refrigerants and alleviate the pressure of the ozone layer hole, all walks of life around the world are doing their best to promote the replacement of refrigerants. Among them, various refrigeration systems such as refrigerators, freezers, refrigerated display racks, and beverage machi...

AI Technical Summary

Problems solved by technology

[0008] Although the viscosity of lubricating oil is too high, although it can effectively isolate the two friction surfaces, it will cause too high viscous resistance loss and reduce the mechanical efficiency; Lubrication increases the friction and wear of the friction pair, resulting in a decrease in mechanical efficiency. At the same time, it also causes leakage of refrigerant and reduces the volumetric efficiency of the compressor.

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