Patent ID: 6176303
Filing Date: 2001-01-23
Classification: B21C,B23P,F28D,F28F

Abstract:
A heat exchanger comprising:a plurality of tubes in which a fluid flows, each of said tubes having both ends in a longitudinal direction; anda header tank having a tank portion extending in an extending direction perpendicular to said longitudinal direction, said tank portion being connected to said ends of said tubes at predetermined positions, wherein:said tank portion defines a plurality of tank passages extending in said extending direction, said tank passages being arranged in a width direction perpendicular to both of said longitudinal direction of said tubes and said extending direction of said tank portion;said tank portion has insertion holes into which said tubes are inserted, at said predetermined positions; andeach of said insertion holes has a hole width in said width direction, said hole width being approximately equal to a tank width of said tank portion in said width direction.