ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,410,956, issued on Sept. 9, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Refrigeration cycle system" was invented by Yuta Iyoshi (Osaka, Japan), Yoshiki Yamanoi (Osaka, Japan) and Kumiko Saeki (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A primary refrigerant circuit allows circulation of a primary refrigerant and includes a primary compressor, a cascade heat exchanger, a primary heat exchanger, and a primary switching mechanism. A secondary refrigerant circuit allows circulation of a secondary refrigerant and includes a secondary compressor, the cascade heat exchanger, a utilization heat exchanger, and a secondary switching ...