| 摘要 |
A folded heat exchanger tube (10) of the type that is rigidified with a pair of abutted 90 degree walls (16) extending along the interior length thereof, so as to join the lower (12) and upper (14) walls thereof, has a separate inner web member (20) anchored and fixed inside between a pair of curved, out turned feet (18) on the abutted walls (16) and the inner surface of the lower wall (12). A widened and flattened central channel (24) in the web (20) is engaged by the under surfaces of the curved feet (18), and is approximately as wide as the total width of the tow feet (18).
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