Patent ID: 11898571
Assignee: TRANE INTERNATIONAL INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A lubricant supply system for a compressor in a heat transfer circuit, the compressor configured to compress a first working fluid including a refrigerant, the lubricant supply system comprising:
a lubricant tank configured to contain lubricant discharged from one or more bearings of the compressor;
a lubricant pathway connected to the lubricant tank and configured to supply the lubricant from the lubricant tank to the one or more bearings of the compressor; and
a lubricant refrigeration system including a second working fluid including a refrigerant, a lubricant heater configured to heat the lubricant to increase a temperature of the lubricant in the lubricant tank to be at or above a predetermined minimum temperature, and a lubricant cooler configured to cool the lubricant flowing through the lubricant pathway with the second working fluid.