METHOD OF MAKING HEAT EXCHANGER Russian patent published in 1997 - IPC

FIELD: manufacture of heat exchangers. SUBSTANCE: at making finned tubes of heat exchangers row of openings having cone flanges are formed in plates. Annular squeezed out portion is made near base of truncated cone of inner surface of said flanges. Edges of flanges are coated with sealing composition, adhesive. Said plates are plated. When plates are assembled to pack edges of flange of each upper plate are pressed-in to inner surface of said squeezed out portions of flanges of lower plate. EFFECT: enhanced efficiency. 3 cl, 4 dwg