ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,150, issued on Dec. 16, was assigned to CARRIER Corp. (Palm Beach Gardens, Fla.).

"Combined heat exchanger, heat exchanging system and the optimization method thereof" was invented by KangShan Xie (Shanghai), Linhui Chen (Shanghai) and Fei Xie (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A combined heat exchanger, a heat exchange system, and an optimization method thereof are provided. The heat exchange system includes: an enhanced vapor injection compressor, a condenser, an expansion valve and an evaporator, which are located in a main circuit; wherein the heat exchange system further includes a first branch branched from the main circu...