Patent ID: 11867164
Assignee: COPELAND LP
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  H | IPC F  H

Claim 14:
15. A compressor comprising:
a compression mechanism configured to compress a first working fluid;
a bearing housing engaged with the compression mechanism;
a motor;
a drive shaft engaging the motor and the compression mechanism and extending through the bearing housing;
a motor cooler engaged with the bearing housing, the motor cooler including a pump configured to pump a second working fluid into a cavity surrounding the motor;
an upper counterweight fixed for rotation with the drive shaft; and
an eccentric drive mechanism fixed for rotation with the upper counterweight,
wherein the eccentric drive mechanism includes an axial sleeve that engages an inner circumference of the pump,
wherein rotation of the eccentric drive mechanism movement of the pump within the pump housing, and
wherein rotation of the drive shaft drives the pump in the motor cooler to pump the second working fluid.