Heat exchanger, and heat exchanging beam, and related welding methods and production

The module is formed from two sheets welded to each other by laser welding. Longitudinal weld beads define between them longitudinal ducts for the flow of a first fluid. The sheets are also joined together by a peripheral weld bead.The weld bead defines, beyond the longitudinal ducts, a transition z...

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Bibliographic Details
Main Authors CLAUDEL MICHEL, GUIDAT ROLAND, FAUCONNIER JEAN-CLAUDE
Format Patent
LanguageEnglish
Published 18.09.2001
Edition7
Subjects
BLASTING
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION
HEAT EXCHANGE IN GENERAL
HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
HEATING
LIGHTING
MACHINE TOOLS
MECHANICAL ENGINEERING
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WEAPONS
WELDING
WORKING BY LASER BEAM
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Summary:The module is formed from two sheets welded to each other by laser welding. Longitudinal weld beads define between them longitudinal ducts for the flow of a first fluid. The sheets are also joined together by a peripheral weld bead.The weld bead defines, beyond the longitudinal ducts, a transition zone which narrows from the longitudinal ducts up to the gap. Weld spots are previously formed in this zone. Once the welds are completed, the module is formed by the injection of a fluid under pressure through a gap in the weld bead.Utilization for rendering mutually compatible the variations in width of the module during hydroforming in the end regions and for forming, with the transitions zone, a flow distributer to the various channels during operation.
Bibliography:Application Number: US19990269817