Screw and pinion teeth profiles in a single screw compressor

摘要

A single screw compressor has a pair of toothed pinions 2, or worm wheels or gate rotors, which cooperate with a helical screw 1, or worm. Each pinion tooth 2 projects radially along a line which extends radially from the rotary axis of the pinion 2, and the tooth profile is defined by a tooth leading edge generating line 8 and a tooth trailing edge generating line 8 which extend parallel to the radially extending line but which are each offset from the line by a different distance BSB1/SB,BSB2/SB. The profile of each screw tooth 1 is defined in the same manner. Such teeth profiles may increase discharge volume and raise energy efficiency of the compressor.