A two part, inner, cylindrical housing concentrically carried within a sealed outer enclosure forms with the outer enclosure, a first sealed chamber and within itself, an upper chamber carrying the electric motor and a lower compressor inlet chamber in a vertical array. The compressor discharge gas, including entrained oil, passes through ducts within the motor to cool the motor with the swirling gas and entrained oil discharged against the upper end of the inner cylindrical housing to separate some of the oil from the discharge gas by centrifugal force. Axial ducts carried by the stator move the discharge gas downwardly to further cool the motor. Discharge gas nozzles fluid connected to the stator ducts discharge the gas and entrained oil against the inner wall of the outer enclosure and the oil drains to the bottom of the enclosure which forms an oil sump.
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