Rotary compressor and its manufacturing method

Abstract

Disclosed are a rotary compressor and its manufacturing method. The rotary compressor comprises a motor and a compressing mechanism which are arranged inside a housing. The compressing mechanism comprises a cylinder with a compression chamber and a piston which rotates eccentrically inside the compression cavity. The cylinder is also provided with a sliding plate groove for holding a slide plate. One end of the slide plate is propped to the periphery of the piston. The slide plate comprises a slide plate metal matrix and a slide plate ceramic composite layer arranged on the slide plate metal matrix. The slide plate ceramic composite layer is arranged at one side, two sides or distal end of the slide plate metal matrix. The slide plate metal matrix is a cast iron matrix or steel matrix. The slide plate ceramic composite layer comprises a porous slide plate ceramic layer and metal embedded in the slide plate ceramic layer. The slide plate ceramic layer is an alumina layer, oxygen ambient silica layer or zirconia layer. The rotary compressor provided by the invention has characteristics of simple and reasonable structure, flexible operation, low manufacturing cost, high surface hardness, good wear resistance, good impact toughness and long service life.

Description

technical field [0001] The invention relates to a rotary compressor, in particular to a rotary compressor and a manufacturing method thereof. Background technique [0002] Compressors are important components of household appliances such as air conditioners and refrigerators that use the refrigeration cycle system to work. Utilize its moving parts driven by the motor, such as a rotary compressor, to convert mechanical energy into pressure energy, realize the compression of the refrigerant in the cylinder of the compressor, and discharge the compressed refrigerant into the refrigeration cycle. [0003] see Figure 1-Figure 2 , is a structural schematic diagram of an existing rotary compressor. Such as figure 1 As shown, the compressor is composed of a compression mechanism and a motor arranged in a cylindrical main casing 1 . After the main casing 1 is closed by the upper casing 2 and the lower casing 10, it constitutes the casing of the compressor. In the casing of the ...

AI Technical Summary

Problems solved by technology

Especially for some refrigerants, such as R401A, CO 2 etc., the operating pressure in the compressor is high, and the pressure difference between the low-pressure chamber 14a and the high-pressure chamber 14b of the compression chamber is large, which is more likely to cause wear and tear, and the service life is shorter

[0005] At present, the commonly used material for sliding vanes is nitrided stainless steel or high-speed steel, and the common material for pistons is cast iron, but some rare metals are added to cast iron, so the production cost of sliding vanes and pistons is relatively high

[0006] Chinese Patent Document No. CN1085992A disclosed a blade for a rotary compressor on 1994.04.27, and a Chinese Patent Document No. CN101265909A disclosed a ceramic sliding vane for a hermetic rotary compressor on 2008.09.17. Although the ceramic material has high hardness and low price, it is easy to break when it is impacted because the ceramic material is relatively brittle and has poor impact resistance.

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