Rotary compressor.

摘要

A rotary compressor comprising two rotors (18a,18b) which have inter-engaging lobes and which rotate in a housing (10) having two laterally intersecting bores defining variable volume compression chambers (12a,12b) which merge cyclically into one as the rotors rotate, one chamber (12b) containing an inlet port (16) adapted to be coupled to a suction pipe and the other chamber containing an outlet port arrangement. The outlet port arrangement comprises at least one exit passage (20) controlled by a valve means (22) whose operation is responsive to the gas pressure across it. <IMAGE>