Heat exchanger with ribbed tube coil - has coil formed from half-tube with outside corrugations

摘要

The tubular heat exchanger comprises and inner coil of a half-tube configuration, with a hinged, folded rib on the tube. The latter can be flat on the outside and corrugated on the inside the folded rib (2) being fitted to the outside. There can be one or more recesses in the rib to accommodate the solder wire, and it can have buckles for projection-welding. The coil inside may mound a sheet metal d drive, possibly with holes.