ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,788, issued on Sept. 1, was assigned to KYUNGDONG NAVIEN Co. LTD. (Pyeongtaek-si, South Korea).
"Heat pump and control method thereof" was invented by Dong Keun Lee (Seoul, South Korea) and In Soo Hwang (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heat pump and a control method thereof is provided. The heat pump includes: a first heat exchanger disposed indoors, a second heat exchanger and a third heat exchanger disposed outdoors, a fluid tube connected to the first heat exchanger, the second heat exchanger and the third heat exchanger, a compressor and an expansion valve unit disposed on the fluid tube, a flow path switching...