REVERSIBLE ROTATING VANE ROTARY COMPRESSOR HAVING A MOVABLE SUPPLEMENTAL SUCTION PORT

摘要

A fluid pressure responsive member is shifted in accordance with the pressure differential between two lines either one of which can be a suction line with the other being a discharge line of a reversible compressor. The member has an arcuate recess which serves as a secondary suction port which provides fluid communication to the offset cylindrical chamber from the suction line in accordance with the position of the fluid pressure responsive member. Because of the lines, the changeover of the porting is automatic upon the reversal of the operation of the compressor.