US 11,982,475 B2
Refrigerant lubrication system with side channel pump
Vishnu M. Sishtla, Manlius, NY (US)
Assigned to Carrier Corporation, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Apr. 10, 2020, as Appl. No. 16/845,773.
Claims priority of provisional application 62/844,533, filed on May 7, 2019.
Prior Publication US 2020/0355193 A1, Nov. 12, 2020
Int. Cl. F25B 31/00 (2006.01); F25B 1/10 (2006.01); F25B 31/02 (2006.01)
CPC F25B 31/004 (2013.01) [F25B 1/10 (2013.01); F25B 31/02 (2013.01); F25B 2500/16 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A vapor compression system comprising:
a compressor having a suction port and a discharge port;
a heat rejection heat exchanger coupled to the discharge port to receive compressed refrigerant;
a heat absorption heat exchanger coupled to the suction port;
a lubricant flowpath from the heat absorption heat exchanger to the compressor; and
a side channel pump located in the lubricant flowpath;
wherein the side channel pump includes an inlet coupled to an outlet on the heat absorption heat exchanger;
wherein the side channel pump includes a vapor outlet port and a liquid outlet port with the vapor outlet port coupled to the heat rejection heat exchanger downstream of the compressor and upstream of the heat rejection heat exchanger.