Heat exchanger fin element with folded over side edges

摘要

A heat exchanger core assembly adaptable for allowing the passage of air therethrough comprising a plurality of fin elements extending in spaced apart parallel fashion across a plurality of fluid carrying tube members, each of the fin elements being positioned within the core assembly so as to have opposite side edges extending in a direction substantially parallel to the direction of air flow through the core assembly, each fin element including a folded over side portion extending along each of the opposite side edges thereof, the fin elements being stackable one upon the other such that the folded over side portions of one fin element mate with the folded over side portions of an adjacent fin element thereby forming a continuous, uninterrupted, substantially air tight core side on each opposite side of the plurality of mated together fin elements for substantially preventing the leakage of air therethrough. These folded over fin side portions may be configured to merely butt up against adjacent fins or to overlap and/or interlock therewith.