Patent ID: 6170565
Filing Date: 2001-01-09
Classification: F28D,F28F

Abstract:
A heat exchanger comprising:a plurality of first tubes for configuring a first heat exchanger,a plurality of second tubes for configuring a second heat exchanger, the plurality of first and second tubes being juxtaposed parallel with each other and the plurality of the first tubes being disposed downstream and the plurality of the second tubes being disposed upstream with respect to a direction of air's flow, ends of the plurality of the first tubes being connected into a first pair of tanks and ends of the plurality of the second tubes being connected into a second pair of tanks, anda plurality of common fins integrally formed and stacked and extending between the plurality of the first and second tubes, whereineach of the fins has a plurality of louvers, which are divided into a first group of louvers formed on a part of the fin disposed in the first heat exchanger and a second group of louvers formed on a part of the fin disposed in the second heat exchanger, the two groups of louvers of fins being different in all of parameters including angle, number and width of louvers, andthe fins and first and second tubes are integrally assembled and then brazed in an oven.