| 摘要 |
The heat-exchanger is formed by superimposed rectangular corrugated plates (2) which are fastened on each other at planar edge zones (4 to 7). In known heat-exchangers the edge zones are fastened on each other by means of separate fastening means or a fastening mass filling the space between the edge zones. The edge zones (4 to 7) can be fastened on each other in a far simpler way, e.g. by welding, if the two zones (4, 6) of the edge zones of the plate are positioned in level with the crests of the corrugations and the other two zones (5, 7) in level with the bottoms of the corrugations, whereby the edge zones of plates (2) turned at an angle of 90<o> with respect to each other make contact with each other. When the plates are made of plastic, the edge zones can be fastened on each other e.g. by a ultrasonic or a radio wave welding. |
