| 摘要 |
1,001,934. Heat exchangers. WEBASTOWERK G.m.b.H. Aug. 4, 1964 [Nov. 1, 1963], No. 31074/64. Heading F4S. [Also in Division B3] A duct 2 having walls 1 of one metal, e.g. steel, has fins 3 of another metal, e.g. copper, soldered thereto in a non-reactive gas atmosphere, each fin or pair of fins being integral with a soldering strip 6 (Fig. 2, not shown) and having at least one dividing cut 7, 8 to relieve thermal stresses. Before soldering, the fins may be bound on to the duct by a wire loop 9 (Fig. 2, not shown) passing through the cuts. |
