| 摘要 |
A heat exchanger of the type used for a condenser in a vehicle air conditioning system includes a pair of parallel, tubular headers which are spaced apart with a plurality of refrigerant flow tubes extending between the headers. The flow tubes have upper and lower flat sides, and forward and rearward outermost edges. The forward and rearward outermost edges longitudinally extend the length of the flow tubes to define forward and rearward outermost planes of the flow tubes, respectively. A plurality of serpentine fins have alternately disposed ridges and furrows which define upper and lower crests. Intermediate portions of the crests are indented to provide recesses, with tabs extending from opposite ends of the crests. The tabs extend outward and adjacent to the forward and rearward outermost edges of the flow tubes, outward of the forward and rearward outermost planes, and retain the flow tubes within the recesses formed into the intermediate portions of the crests. The headers and serpentine fins are brazing clad for passing through a brazing furnace to braze the headers and serpentine fins to the flow tubes. The tabs of the fins braze to the outermost edges of the flow tubes, and the intermediate portions of the crests of the fins braze to the upper and lower flat sides of the flow tubes. |
