US 12,188,701 B2
Systems and methods for providing compressor cooling
Michael M. Perevozchikov, Tipp City, OH (US); and Matthew J. Swallow, Versailles, OH (US)
Assigned to Copeland LP, Sidney, OH (US)
Filed by Copeland LP, Sidney, OH (US)
Filed on Sep. 9, 2022, as Appl. No. 17/930,807.
Prior Publication US 2024/0085075 A1, Mar. 14, 2024
Int. Cl. F25B 49/02 (2006.01); F25B 31/02 (2006.01); F25B 39/00 (2006.01); F25B 41/40 (2021.01)
CPC F25B 49/02 (2013.01) [F25B 31/026 (2013.01); F25B 39/00 (2013.01); F25B 41/40 (2021.01); F25B 2400/07 (2013.01); F25B 2400/13 (2013.01); F25B 2500/06 (2013.01); F25B 2600/2515 (2013.01); F25B 2700/21156 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A vapor compressor system comprising:
a primary loop comprising:
a dynamic compressor operable to compress a refrigerant, the dynamic compressor including:
a housing;
a shaft supported in the housing by a bearing;
an impeller operably connected to the shaft to drive rotation thereof; and
a drive operably to control the motor;
a condenser fluidly connected to the dynamic compressor;
a first expansion device fluidly connected to the condenser; and
an evaporator fluidly connected to the first expansion device and the dynamic compressor; and
a secondary loop comprising:
a second expansion device fluidly connected to the condenser;
a heat exchanger fluidly connected to the second expansion device, the condenser, and the dynamic compressor; and
a supply duct fluidly connected between the heat exchanger and the dynamic compressor to provide a flow of refrigerant to the bearing, wherein the supply duct provides the flow of refrigerant to the bearing prior to mixing with the refrigerant of the primary loop flowing through the dynamic compressor.