COMPRESSOR UNLOADER ASSEMBLY

摘要

. Disclosed is an unloader assembly for a gas compressor having a compressor suction chamber and a compressor cylinder with a compressor piston slideable therein for effecting one-way gas flow through a suction valve assembly mounted in the compressor suction chamber, said suction valve assembly having a central passage therethrough. An unloader piston is slideably movable in the central passage of the suction valve between a first position closing a plurality of ports in the suction valve each providing communication between the suction chamber and the suction valve central passage and a second position opening the ports. A clearance bottle is mounted on the compressor and a valve controlled aperture permits communication between the suction chamber and the clearance bottle until closed by a clearance bottle valve.