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Optimization of the parameters of refrigeration screw compressor profiles in order to increase the service life of bearings

DOI: 10.17586/1606-4313-2019-18-4-32-36
UDC 621.514.54

Optimization of the parameters of refrigeration screw compressor profiles in order to increase the service life of bearings

Noskov A.N., Shaposhnikova М.М.

For citation: Noskov A.N., Shaposhnikova M. Optimization of the parameters of refrigeration screw compressor profiles in order to increase the service life of bearings. Vestnik Mezhdunarodnoi akademii kholoda. 2019. No 4. Р. 32-36

Abstract
In order to increase the efficiency of the refrigeration screw compressor, the replacement of sliding bearings with rolling bearings is proposed. The modernization is justified by the simplification of the screw compressor design, the reduction of the profile gaps between the screws, and the reduction of ballast leakage. The need to increase the service life limiting the areas of rolling bearings use by reducing the reactions on the supports is determined. The paper presents the result of the analysis of refrigerants, and propane (R290) is selected and proposed for use as the most environmentally friendly and effective alternative to HFC refrigerants. The geometrical characteristics of the screw profiles were calculated and the optimum values of the parameters of the screw compressor profiles are obtained, ensuring minimal reactions on the supports.

Keywords: refrigeration screw compressor, ballast leakage, geometric characteristics of screw profiles, screw compressor bearings, minimal reactions on compressor bearings.

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