AIR-TO-AIR HEAT EXCHANGER CORE

摘要

The present invention relates to a core assembly for use in an air-to-air he at exchanger. The core is comprised of a plurality of square plates. Each plate is comprised of a square planar central region; a first pair of opposed edge flanges bent in a first direction with respect to the central region to form approximately 90 degree angle with the central region; and a second pair of opposed edge flanges bent in a direction opposite the first direction with respect to the central region to form approximately 90 degree angle with the central region. The core is formed by the plurality of square plates that ar e positioned into a stack of parallel plates such that the opposed flanges of one of the plurality of plates is located in contact with and inside mating opposed flanges of a plate directly adjacent thereto, thereby forming a plurality of air passages between adjacent plates such that two perpendicula r air pathways are formed in an interleaved orientation. A frame is provided i n contact with a bottom plate in the stack and a top plate in the stack for holding the plurality of plates in position.