OELGEKUEHLTER SCHRAUBENVERDICHTER ODER -MOTOR.

摘要

An oil-cooled type screw rotor assembly having a female rotor and a male rotor adapted to rotate around parallel axes in meshing relation to each other. The leading side flank of the female rotor is constituted by a first leading side flank formed by an arc of a radius R1 and a second leading side flank formed by an arc of a radius R2. Also, the trailing side flank of the female rotor is constituted by a first trailing side flank formed by an arc of the tooth ends of the male rotor having a radius R5 and a second trailing side flank formed by an arc of a radius R3 which is smaller than the radius R2 of the second leading side flank. The configuration of the teeth of the male rotor is materially formed by arcs of the leading and trailing side flanks of the female rotor.