ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,848, issued on April 22, was assigned to Envola GmbH (Ulm, Germany).
"Heat exchanger arrangement" was invented by Alexander Schechner (Ulm, Germany) and Gerhard Ihle (Ulm, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heat exchanger arrangement includes a housing in which an air inlet opening is arranged on the circumference, a cover that covers the housing on an upper side and in which an air outlet opening is arranged, a reverse-operated radial fan being arranged inside the housing in such a way that it can generate an air flow between the air inlet opening and the air outlet opening, which air flow is directed radially inward with respe...