Oil cooled rotary compressor - has collection chamber for oil which separates out from entrainment in air passing to outlet

摘要

The coil cooling type rotary compressor has a housing contg. a rotor chamber, with an unloader valve of suction throttle type controlling flow into the housing. A discharge chamber is communicated via an outlet port with the rotor chamber, housing multiple rotors. A discharge pipe connects to the discharge chamber through a check valve controlled port, and is connected to a compressed air-oil reservoir. The compressor bottom part collects any oil which separates from the mixture of compressed air and oil delivered to the discharge chamber. Oil can be withdrawn during all modes of compressor operation from the bottom of discharge chamber. An oil delivery pump is connected to one of the rotors to pass the collected separated oil back to the reservoir.