SCREW COMPRESSOR Russian patent published in 1999 - IPC

FIELD: power engineering industry. SUBSTANCE: compressor uses a drive and driven rotors. The front and rear sides of the end profile of the drive rotor screw are described mainly by circumference arches. The driven rotor profiles are made on enveloping curves. To enhance the compressor efficiency, the centers of the radii of arch describing the front and rear sides of the screw end profile are arranged on the pitch circle. The radii are of the same value. EFFECT: enhanced efficiency. 7 cl, 3 dwg