SCREW COMPRESSOR Russian patent published in 1994 - IPC

FIELD: mechanical engineering; compressors. SUBSTANCE: made in sliding bracket bearing 9 arranged in space 8 of rotor 5 at suction side are oil inlet and outlet channels 12, recess 11 located diametrically opposite to delivery port 2 and communicating with channel 12, and pairs arranged at both sides of recess and communicating through holes with oil channels uniformly spaced over length of pairs. Ring projections 16 of rotors 5 are made to form spaces 17 between cover 3 and face 18 of projections 16. Spaces 17 communicate with oil delivery channels 4 in cover 3. Provision and location of recess 11, slots and spaces 17 make it possible to efficiently relieve rotor supports from radial and axial efforts, thus increasing reliability of compressor. EFFECT: increased reliability. 2 cl, 3 dwg