Method for improving performance of rotary compressor and rotary compressor

Abstract

The invention provides a method for improving the performance of a rotary compressor, comprising: a first step, selecting a graphite material, wherein the Shore hardness of the graphite material is greater than 45HS, and the flexural strength of the graphite material is greater than 25MPa and / or Or the compressive strength is greater than 45MPa; the second step is to apply the selected graphite material to the rotary compressor piston. The invention applies the graphite material to the piston of the rotary compressor, utilizes the self-lubricating property of the graphite material itself, reduces the decisive role of the refrigerating machine oil in reducing friction and anti-wear when the piston acts as a friction pair, and utilizes the advantage of the lighter weight of the graphite material , to reduce the input loss. In addition, the surface of the graphite material piston is sealed by impregnation, so that the graphite material piston can be used in oily or oil-free working environments at the same time.

Description

technical field [0001] The present invention relates to the field of rotary compressors, and more particularly, the present invention relates to a method of improving the performance of rotary compressors by applying graphite materials and rotary compressors. Background technique [0002] The rotary compressors in the prior art generally use metal materials such as cast iron to make pistons, and can run well under the condition of sufficient lubricating oil (refrigerating machine oil). [0003] However, metal pistons often have a large mass and require a certain amount of input force to drive them to operate, and the metal material itself does not have a self-lubricating effect, resulting in poor overall performance of the rotary compressor in an oil-free or oil-less working environment. [0004] Since the rotary piston of the rotary compressor is generally subjected to a greater load than that of the general reciprocating compressor, even in the working environment with ref...

AI Technical Summary

Problems solved by technology

[0003] However, metal pistons often have a large mass and require a certain amount of input force to drive them to run, and metal materials themselves do not have self-lubricating effects, resulting in poor overall performance of rotary compressors in oil-free or oil-less working environments

[0004] Since the rotary piston of the rotary compressor is generally subjected to a greater load than that of the general reciprocating compressor, even in the working environment with refrigerating machine oil, serious piston wear may occur under low-speed and heavy-load conditions.

Images