Modine Manufacturing Company

Martin Ploppa

Daniel Borst

Werner Zobel

Jens Nies

Andreas F Stolz

Siegfried Eisele

Frank Opferkuch

Dieter Merz

A system and method for producing flat tubes is described and illustrated. The flat tubes can be produced from at least one strip of endless band material having at least one wall part and an inner part formed with corrugations on a roller train provided with roller pairs, with the strip running in a longitudinal direction through the rollers and being shaped. The inner part of the flat tube can be formed with corrugations placed between the shaped wall parts, after which the closure of the flat tube is carried out. Production of the flat tubes can include forming spaced apart band thinning lines running in the longitudinal direction of the strip, and forming corrugation peaks and corrugation troughs at the band thinning lines.

Tubes and method and apparatus for producing tubes

Flat heat exchanger tubes having two narrow and two broad sides are shown and described, wherein the flat tubes can be manufactured from two continuous strips having a relatively large curve on one longitudinal edge of the strips and having a relatively small curve on the other longitudinal edge of the strips. The two strips can be arranged laterally transposed with respect to one another to form the wall of the flat tubes, so that the relatively large curve of the longitudinal edge of one strip holds in itself the relatively small curve of the longitudinal edge of the other strip to form the narrow sides of the flat tubes. The strips can be formed with at least one further contoured portion which extends in the longitudinal direction of the flat tubes and which improves cohesion of the flat tube.

Heat exchanger tube and method of forming the same

Growing community of inventors

Pfullingen, Germany

Martin Ploppa