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(11) | EP 0 035 078 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Strip-finned heat-exchangers and a process and apparatus for the manufacture of heat-exchanger elements of strip-finned heat-exchangers |
(57) In a finned heat exchanger, preferably of aluminium, the feed of the fins (1) are
secured to tubular passages (3, 3a, 3b) formed from plates (2) that have been rolled
together and then expanded. The bond between the fins (1) and the plates (2) may be
an adhesive bond, as by welding or a cohesive bond, as by tight pressing together. |