ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,778,377, issued on Nov. 3, was assigned to Illinois Tool Works Inc. (Glenview, Ill.).
"Dishwasher with heat recovery apparatus" was invented by Harald Disch (Elzach, Germany) and Martin Schrempp (Biberach, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dishwasher includes a heat recovery apparatus to recover at least a portion of the thermal energy of discharged exhaust air as utility heat and transfer it to a treatment liquid to be sprayed in the dishwasher. The heat recovery apparatus includes a primary circulation system having a heating pump assembly and a first secondary circulation system with a first heat exchanger unit configured such t...