Patent ID: 6561264
Filing Date: 2003-05-13
Classification: F28D,F28F

Abstract:
A heat exchanger comprising:a first core portion to carry out a heat exchange between a first fluid and an external fluid, said first core portion including a plurality of first tubes through which the first fluid flows and first cooling fins disposed between said each pair of adjacent first tubes; and a second core portion disposed in series with said first core portion in an external fluid flow direction with a predetermined clearance therebetween, to carry out a heat exchange between a second fluid and the external fluid, said second core portion including a plurality of second tubes through which the second fluid flows and second cooling fins disposed between said each pair of adjacent second tubes, wherein each of said first cooling fins and said second cooling fins is integrated by a connecting portion, and one of said first cooling fins and said second cooling fins introduce different cooling performances between a first area and a second area within a respective one of said first core portion and said second core portion.