ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,680, issued on Nov. 11, was assigned to CARRIER Corp. (Palm Beach Gardens, Fla.).
"Defrost control method and heat pump system" was invented by Min Yang (Shanghai), Weijuan Wang (Shanghai) and Jingkai Weng (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A defrosting control method comprises: initializing a first default parameter TMn and a second default parameter TNn in a preset defrosting interval indicatrix X when a heat pump system runs, wherein the preset defrosting interval indicatrix X=T1/TMn+T2/TNn; executing the defrosting cycle when the preset defrosting interval indicatrix X is greater than or equal to a preset constant value, an...