Patent ID: 6354368
Filing Date: 2002-03-12
Classification: B21D,F28D,F28F

Abstract:
Fins for use in an integrated heat exchanger constituted of at least a first heat exchanger having a plurality of first tubes for a first heat exchanging medium and a second heat exchanger having a plurality of second tubes for a second heat exchanging medium, said fins comprising:a corrugated sheet with alternating ridges and valleys formed by bent portions thereof and intermediate portions respectively extending between said bent portions, said bent portions being adapted to contact the first and second tubes of the first and second heat exchangers when said fins are disposed between an adjacent pair of the first tubes and an adjacent pair of the second tubes; wherein apexes of said bent portions extend in a width direction of said corrugated sheet; and wherein said bent portions have heat transfer prevention openings therein respectively formed at mid portions thereof in the width direction, and folded portions respectively formed so as to be integral parts of said corrugated sheet and span between adjacent pairs of said intermediate portions in a direction generally perpendicular to said width direction, by bending portions of the respective bent portions to protrude in directions opposite to the directions in which said bent portions otherwise protrude, respectively.