HELICAL COMPRESSOR ROTOR BEARING ASSEMBLY Russian patent published in 2019 - IPC F04C18/16 F04C29/00 F01C21/02 

FIELD: machine building.

SUBSTANCE: invention relates to helical compressor rotor bearing assemblies. Bearing assembly comprises serially installed support roller bearing (1) and radial-thrust rolling bearings (2) with axial pre-tensioning, as well as two self-aligning elements (3, 4) installed on both sides of radial-thrust bearings (2) of rolling. Elements (3, 4) are made in the form of two bushings conjugated to each other on a spherical surface, the center of which is located on the rotor axis. One of the bushings is made with a nozzle for supply of oil to bearings (2) connected to the diametric groove made on its spherical surface.

EFFECT: invention is aimed at improving operating reliability of the rotor assembly of the screw compressor due to providing compensation of thrust surfaces distortions arising from deflection of the rotor shaft during compressor operation.

1 cl, 4 dwg