US Patent Issued to QINGDAO HISENSE HITACHI AIR-CONDITIONING SYSTEMS on Oct. 14 for "Air conditioning system and control method thereof" (Chinese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,573, issued on Oct. 14, was assigned to QINGDAO HISENSE HITACHI AIR-CONDITIONING SYSTEMS Co. LTD. (Qingdao, China).

"Air conditioning system and control method thereof" was invented by Peng Yan (Shandong, China), Min Zhou (Shandong, China), Yang Sun (Shandong, China) and Fei Han (Shandong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An air conditioning system includes an outdoor unit and an indoor unit. The outdoor unit includes a compressor, an outdoor heat exchanger, a first expansion valve, a third expansion valve, and a subcooling heat exchanger. The indoor unit includes an indoor heat exchanger and a second expansion valve. In a coolin...