SCREW COMPRESSOR Russian patent published in 2012 - IPC F04C18/16 

FIELD: engines and pumps.

SUBSTANCE: compressor comprises case 1 with working chamber and gas suction and discharge chambers, engaged drive and driven rotors arranged in said case to run in thrust bearings 4, 5, axial force compensators made up of two radial thrust antifriction bearings fitted on rotors via spacer rings between cages of said bearings, and devices to create interference. Every device to create interference is made up of segment load block thrusting against, at least, one of outer radial-thrust bearing cages and arranged in case 1 to make pressure chamber to be communicated with pressure source.

EFFECT: higher efficiency and reliability and longer life.

5 cl, 7 dwg