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AssigneeBehr GmbH & Co.
InventorsDieter Bauer, Ralf Bochert, Herbert Damsohn, Werner Helms, Roland Hemminger, Herbert Hunzelmann, Volker Kurz, Roland Schirrmacher, Walter Wolf
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A heat exchanger, produced by the insertion of welded pipes into a rib pack, has a good connection between the rib pack and the pipes after expansion of the pipes. An optimal contact of the pipes against the passages in the cooling fins of the rib pack is achieved because the weld base of the welded pipe lies in a recess. The recess is formed by reduction of the wall thickness of a strip material from which the welded pipe is produced.
A pipe comprising a weld seam formed from a welding together of strip edges of a strip material, wherein at least one of the strip edges has a reduced wall thickness defining a recess on an inner surface of the pipe.
A heat exchanger comprising a pipe having a weld seam which runs in a longitudinal direction of said pipe and which is formed from a welding together of strip edges of a strip material, wherein said pipe has, in a region of the weld seam, a recess running in the direction of the weld seam and along an inner surface of the pipe.
A process for the production of a welded pipe, in which a weld seam extends in a longitudinal direction of the pipe, comprising the steps of:
A process for the production of a welded pipe, in which a weld seam extends in a longitudinal direction of the pipe, comprising the steps of:
A process for the production of a welded pipe, in which a weld seam extends in a longitudinal direction of the pipe, comprising the steps of:
Dependencies are inferred from the claim text.