| 摘要 |
The tubular conduits (2) are essentially constituted by successive portions of a single conduit (8) which are connected with each other by means of connecting elbows (9) integrally formed in said conduit (8), while the fins (4) are provided with at least one substantially U-shaped seat (12) for housing the tubular conduits (2), the fins (4) being laterally connected with each other downstream of the tubular conduits (2) at an end portion (12b) thereof. <IMAGE> |
