Heat exchanger plates and methods for manufacturing heat...

B - Operations – Transporting – 21 – D

Patent

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B21D 53/04 (2006.01) F28F 3/08 (2006.01)

Patent

CA 2513580

A method for forming heat exchanger plates (10) comprises formation of a fluid flow channel (28) along the edges (22) of a sheet metal strip or blank, and formation of a pair of raised end bosses. The raised end bosses (32) are elongated in the longitudinal dimension and are formed within the final width dimension of the plate so as to avoid the need for trimming of excess material along the edges of the plate. The method generates less scrap than prior art processes using progressive stamping, and also permits variation of the plate lengths.

La présente invention concerne un procédé pour produire des plaques d'échangeur thermique (10). Ce procédé consiste à former un canal d'écoulement de fluide (28) sur les bords (22) d'une bande ou d'une ébauche en tôle, puis à former une paire de protubérances d'extrémité en saillie. Ces protubérances d'extrémité en saillie (32) sont allongées dans la dimension longitudinale et sont formées dans la dimension de largeur finale de la plaque, de façon à éviter d'avoir à couper la matière en excès sur les bords de la plaque. Ce procédé induit moins de déchets que les procédés de la technique antérieure utilisant un estampage progressif et permet également de faire varier la longueur des plaques.

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