| 摘要 |
A heat exchanger assembly comprises a pair of seamless aluminium alloy headers 2, 3 disposed in spaced apart parallel relationship and formed (e.g. in walls 7 thereof) with spaced-apart elongate slots arranged to receive opposite ends of flattened tubes 8 of an aluminium alloy the outer surfaces of which are coated with a brazing alloy, end plates 8a, 17 extending between corresponding ends of the headers parallel with the tubes 8 and having their face-to-face surfaces coated with a brazing alloy, and inlet and outlet connections 5 communicating with the headers, the assembly (including e.g. corrugated strips 19) being brazed together in known manner. In particular the headers 2, 3 are impact extruded to provide a header of D-shaped cross-section with a base 4, and a connector 5 which may alternatively be a separate member. Portions of the plate 8a may form header end closures 10. <IMAGE> |
