| 摘要 |
<p>In a particular region (1a) of the tubeplate (1), between adjacent openings (2) holding the radiator tubes, a point- or line elevation (8) is formed. This located on one side of the zig-zag fins (4). The elevation is formed from the tubeplate by pressing, as a stud or groove. The flat tubes (3) are soldered to the fins, and/or the tube ends are soldered to the tubeplate. Tubeplate and flat tubes are plated with solder. The elevation assures minimal contact between the tubeplate and the zig-zag fins (4, 4a), during the flow of solder.</p> |
