Flat pipe produced by transforming a metal ribbon and subsequent welding or soldering for a heat-transfer medium or heat exchanger has two parallel longitudinal sides

摘要

Between first (8) and second (9) longitudinal sides there is a separating and/or supporting element (4) formed by reshaping a metal ribbon and running in a longitudinal direction of a flat pipe. This element has a U-shaped fold (6) with a first free leg (6a) and a second fixed leg (6b). An independent claim is also included for a heat-transfer medium or heat exchanger with a collecting tank and a tubular or ribbed block consisting of flat pipes and ribs.