Patent ID: 6247523
Filing Date: 2001-06-19
Classification: F02M,F28D,F28F

Abstract:
A heat exchanger comprising:an exhaust gas tube through which exhaust gas generated by a combustion flows, said exhaust gas tube having a flat sectional shape;a plurality of cooling fluid tubes through which cooling fluid for cooling exhaust gas flows, said cooling fluid tubes being disposed adjacent to both ends of said exhaust gas tube in a minor-diameter direction of said exhaust gas tube; andan offset fin disposed within said exhaust gas tube, said offset fin having a plurality of plate-like segments which are approximately parallel to said minor-diameter direction and are arranged in a longitudinal direction of said exhaust gas tube in such a manner that adjacent segments in the longitudinal direction are offset from each other in a major-diameter direction of said exhaust gas tube,wherein said segments are disposed to be tilted in a tilt direction relative to said longitudinal direction.