Method of making a heat exchanger and heat exchanger...

F - Mech Eng,Light,Heat,Weapons – 28 – D

Patent

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Details

F28D 9/00 (2006.01) F28F 3/08 (2006.01) F28F 3/12 (2006.01)

Patent

CA 2678138

The present invention relates to methods for producing a heat exchanger comprising banks 2, 3, 4 each defining a fluid flow, each bank comprising two solid plates 11, 12 and spacer pieces to hold the two plates in position. The method is characterized in that, in order to produce at least one of the banks, there are five steps: A producing an insert plate 20 comprising strips, bridges of weakness 35, 36, 37 connecting the strips and capable of breaking under tension, and orifices separated by the walls 28, 29 and delimiting two lanes 31, 32; B interposing the insert plate 20 between the two plates 11, 12; C inserting a binder 41, 42 between the face 33 of the lanes 31 and the face 1-12 of the plate 11, and between the face 34-1 of the lanes 32 and the face 1-12 of the plate 12; D applying a force to bring the two plates 11, 12 into contact with the insert plate 20; E applying a force to part the two, upper and lower, plates 11, 12, to break the bridges 36, 37, 38 and bend the dividing walls 28, 29 so that, together with the two lanes, they form a Z shape. Another subject of the present invention is a heat exchanger produced according to the method of the invention.

La présente invention concerne les procédés pour réaliser un échangeur thermique comportant des nappes 2, 3, 4 définissant chacune une circulation fluidique, chaque nappe comportant deux plaques pleines 11, 12 et des entretoises pour maintenir les deux plaques. Le procédé se caractérise par le fait que, pour la réalisation d'au moins l'une des nappes, il comporte cinq étapes : A réalisation d'une plaque intercalaire 20 comportant des bandes, des ponts de faiblesse 35, 36, 37 reliant les bandes et aptes à se rompre à la traction, et des orifices séparés par les parois 28, 29 et délimitant deux pistes 31, 32; B interposition de la plaque intercalaire 20 entre les deux plaques 11, 12; C interposition d'un liant 41, 42 entre la face 33 des pistes 31 et la face 1-12 de la plaque 11, et entre la face 34-1 des pistes 32 et la face 1-12 de la plaque 12, D application d'une force pour amener les deux plaques 11, 12 au contact de la plaque intercalaire 20, E application d'une force pour écarter les deux plaques supérieure et inférieure 11, 12, rompre les ponts 36, 37, 38 et plier les parois de séparation 28, 29 pour qu'elles forment un Z avec les deux pistes. La présente invention a aussi pour objet un échangeur thermique réalisé avec le procédé selon l'invention.

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