Patent ID: 6886349
Filing Date: 2005-05-03
Classification: F25B,F28D,F28F,Y10T

Abstract:
1. An aluminum heat exchanger, comprising: a fin having a first aperture therethrough with a flange formed around said first aperture, said fin made from a first aluminum alloy having a first melting point; a refrigerant tube made from a second aluminum alloy having a second melting point, said refrigerant tube extending through said first aperture; a tubular coupling made from a third aluminum alloy having a third melting point and coupled to an end of said refrigerant tube; and a fourth aluminum alloy having a fourth melting point less than said first, second, and third melting points, said fourth aluminum alloy interposed said refrigerant tube and said flange, and further interposed said refrigerant tube and said tubular coupling.