Patent ID: 6543675
Filing Date: 2003-04-08
Classification: B23K,F28D,F28F

Abstract:
Method for assembling in a fluidtight manner, by soldering, a header plate (2, 3) delimiting a heat exchange fluid box (13, 14) and a multiplicity of parallel elongate tubes (6) whose ends pass through respective holes (20) in said header plate to allow communication of fluid between the inside of the tubes and the inside of the fluid box, in which a solder is made to melt in order to provide a fluidtight connection between the periphery of each hole and the external surface of the corresponding tube, characterised in that the solder is applied to at least one of the faces of the header plate, before insertion of the ends of the tubes, in the form of a flexible adhesive sheet (21) previously perforated (25) in correspondence with the holes (20) in the plate.