Fremgangsmåde og indretning til fremstilling af varmevekslerelementer såvel som tilhørende ribberør

摘要

The invention relates to a method and a device for manufacturing heat-exchanger elements having a basic tubular body, the cross-section of which has a large width in relation to its height and which is provided on its surface with ribs enlarging the heat-exchange area, and also to a corresponding ribbed tube. On opposite wide sides of the profile (1) of the basic body, in each case a ribbed plate (2) is attached in the longitudinal direction of the profile. The ribbed plate (2) is folded or corrugated and, after being pressed onto the surface of the profile (1) of the basic body, is connected to the latter at least at some bearing points, the profile (1) of the basic body being moved together with the ribbed plates (2) continuously in the longitudinal direction and relative to a fastening means. In order to guarantee reliable fastening of the ribbed plates (2) to the wide sides of the profile (1) of the basic body despite the high rigidity of the ribbed plates (2) and unavoidable tolerances of the profile (1) of the basic body, the profile (1) of the basic body is designed as a profile which is open along a longitudinal line and to the wide side of which a ribbed plate (2) is fastened in each case before the longitudinal margins (1a, 1b) are brought together and connected to one another to make a closed tube.