| 摘要 |
A modular heat exchanger (10) includes a plurality of tubular modules (61) formed from an aluminum extrusion. Each extruded tube (62) has a generally rectangular cross section, a through bore (66) extending longitudinally therethrough between parallel opposite faces (63), and parallel longitudinal Vgrooves (64) in the faces (63), all formed in the extrusion process. Each face (63) includes a plurality of parallel fins (69) which are cut into the grooved face (63) in a direction transverse to the grooves (64). The fins (69) have a generally saw tooth structure so as to increase the turbulence of the air flow through the heat exchanger (10). Unslotted end faces (68) on the tubes (62) include groove portions (71) which are filled with weld material in both the tube joining process and the end tank welding process, thereby providing an all-welded aluminum heat exchanger of substantially enhanced strength. In another embodiment utilizing an all-welded construction, extended unslotted end faces are cross bored and sealed to provide fluid supply in lieu of the end tanks.
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