SCREW COMPRESSOR Russian patent published in 1997 - IPC

FIELD: compressor engineering. SUBSTANCE: inside the housing are screw rotors. The shafts of the rotors are set in bearings ones of which are radial and roller and the other ones are radial- thrust. On the shafts from the side of sicking are relief disks to define spaces of high pressure. Inside the housing from the side of delivery are sealing bushing which are mounted coaxially to the each shaft and provided with grooves and openings for supplying oil. The grooves and openings are in communication with the oil pump through oil separator. In the housing from the side of sucking under the relief disks are grooves. The centers of all grooves are shifted with respect to the axes of the rotors. EFFECT: improved design. 3 dwg