US Patent Issued to Hill Phoenix on July 28 for "Refrigeration system with oil control system" (Danish Inventor)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,693,048, issued on July 28, was assigned to Hill Phoenix Inc. (Conyers, Ga.).

"Refrigeration system with oil control system" was invented by Kim G. Christensen (Aarhus V., Denmark).

According to the abstract* released by the U.S. Patent & Trademark Office: "A CO2 refrigeration system includes a plurality of compressors configured to circulate a CO2 refrigerant, a suction line configured to deliver the CO2 refrigerant to the compressors, an oil separator configured to separate oil from the CO2 refrigerant, and an oil return line configured to deliver the oil from the oil separator to the suction line. The oil mixes with the CO2 refrigerant in the suction line before reaching the compr...