SCREW-TYPE COMPRESSOR UNIT Russian patent published in 2012 - IPC F04C29/02 F04C18/12 

FIELD: machine building.

SUBSTANCE: screw-type compressor unit 1 includes screw compressor 2, in which screw rotor 6 is arranged with the possibility of turning for compressing gas together with lubricating fluid of rotor into device with mutual internal-external gearing in rotor chamber 5, formed in housing 4. Rotor shaft is held by bearings 10, 11, mounted in bearing spaces 7, 8 formed in housing 4 adjacent to chamber 5. The shaft includes sealing elements 13, 14, that isolate the space 7, 8 from the chamber 5. The unit contains manifold 3 that separates rotor fluid from gas released from compressor 2, channel 25, through which rotor fluid separated by manifold 3 is supplied to chamber 5 and lubricating system 17 of bearing for supply of bearing fluid into space 7, 8, cooling of bearing fluid flowing out of space 7, 8 and returning this fluid into space 7, 8. Bearing fluid is also supplied to elements 13, 14.

EFFECT: creation of unit, where bearing service life is not affected by compressed gas properties.

3 cl, 4 dwg