US 12,247,767 B2
Economizer and air conditioning system
Liang Xiang, Shanghai (CN); Fei Xie, Shanghai (CN); Weijie Shao, Shanghai (CN); Lihui Yang, Shanghai (CN); and Yifeng Wang, Shanghai (CN)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Apr. 20, 2022, as Appl. No. 17/725,078.
Claims priority of application No. 202110423066.1 (CN), filed on Apr. 20, 2021.
Prior Publication US 2022/0333829 A1, Oct. 20, 2022
Int. Cl. F25B 1/10 (2006.01); F25B 40/00 (2006.01)
CPC F25B 1/10 (2013.01) [F25B 40/00 (2013.01); F25B 2400/13 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An economizer, comprising:
a housing with a refrigerant inlet for connecting to a first heat exchanger, a refrigerant outlet for connecting to a second heat exchanger, and a suction port for connecting to an intermediate stage of a compressor; and
a choke portion configured to protrude inwardly from an inner wall of the housing such that refrigerant flowing to the suction port is at least partially obstructed;
wherein the choke portion is arranged closer to the suction port on the inner wall of the housing than to the refrigerant inlet and the choke portion is arranged closer to the suction port on the inner wall of the housing than to the refrigerant outlet;
wherein the choke portion includes a first wall located between the refrigerant inlet and the suction port, the first wall arranged closer to the suction port on the inner wall of the housing than to the refrigerant inlet;
wherein the choke portion includes a second wall located between the refrigerant outlet and the suction port, the second wall arranged closer to the suction port on the inner wall of the housing than to the refrigerant outlet.