Patent ID: 7188664
Filing Date: 2007-03-13
Classification: F28D,F28F

Abstract:
1. A heat exchanger assembly comprising: a heat exchanger core for exchanging heat with a fluid flowing between the ends thereof, a first tank attached to said heat exchanger core having at least one opening, a second tank attached to said heat exchanger core for fluid flow through said heat exchanger between said tanks, a secondary heat exchanger subassembly disposed in said first tank, a fitting having a bore and connected to said secondary heat exchanger subassembly and extending through said opening in said first tank, a tubular connector disposed in said bore in said fitting for establishing fluid communication with the secondary heat exchanger subassembly, said first tank and said fitting and said tubular connector comprising metal, a first mechanical connection for mechanically holding said fitting in engagement with the interior of said first tank about said opening, a second mechanical connection for mechanically holding said tubular connector in said bore in the fitting for brazing said metal fitting to said first tank for brazing said fitting to said tubular connector, and a braze ring brazing said fitting into fluid tight sealing relationship with said first tank and said tubular connector into fluid tight sealing relationship with said fitting.