Brazed aluminum heat exchanger

Details Brazed aluminum heat exchanger Brazed aluminum heat exchanger

2005-05-03

2005-05-03

Tapolcai, William E. (Department: 3744)

Refrigeration

Processes

Assembling, charging, or repairing of refrigeration producer

C062S298000, C062S515000, C165S178000, C029S890043, C029S890046, C029S890054, C285S288110

Reexamination Certificate

active

06886349

ABSTRACT:
An aluminum heat exchanger is provided. In one embodiment, the aluminum heat exchanger comprises a fin having a first aperture therethrough with a flange formed around the first aperture. The fin is made from a first alloy having a first melting point. The heat exchanger includes a refrigerant tube made from a second alloy having a second melting point. The refrigerant tube extends through the first aperture. The heat exchanger also has a tubular coupling made from a third alloy having a third melting point and that is coupled to an end of the refrigerant tube. A fourth alloy having a fourth melting point less than the first, second, and third melting points is interposed the refrigerant tube and the flange, and further interposed the refrigerant tube and the tubular coupling. A method of manufacturing and a refrigeration unit are also provided.

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