Patent ID: 6502305
Filing Date: 2003-01-07
Classification: B21D,F28D,F28F,Y10T

Abstract:
Method of manufacturing a fin for a heat-exchange module which comprises at least two heat exchangers (1, 2) equipped with fluid-circulation tubes and moreover comprising cooling fins (30, 38) common to the exchanger (1, 2), the fin (30, 38) consisting of a metal strip (14, 32) having a width (L1) divided into at least two heat-exchange regions (18, 20) by at least one series of longitudinal oblong holes (26) spaced apart from one another, characterised in that:at least one series of longitudinal slits (22) is formed, spaced apart from one another, in the metal strip (14, 32); the longitudinal slits (22) are widened so as to form a series of oblong holes (26) spaced apart from one another; and stampings are formed between the longitudinal slits (22), said stampings being flattened so as to widen the slits (22) and form the series of oblong holes (26).