Patent ID: 6289977
Filing Date: 2001-09-18
Classification: B23K,F28D,F28F,Y10T

Abstract:
A heat-exchange bundle comprising:modules each comprising two sheets laser welded along longitudinal lines which between them define first passages of substantially tubular shape, for a first exchange fluid;positioning means for positioning the modules with respect to each other in such a way as to define, between the modules, second passages for a second exchange fluid;distributer means for distributing, in a substantially equitable and/or symmetrical manner, the flow of at least one of the first and second fluids between all of the corresponding passages, said distributer means comprising at least one of the ends of each module a transition zone which defines for the first fluid a first transition passage; andwherein the modules are less thick in at least a section of the transition zone than in the undulating zone defining the first tubular passages, in such a way as to define, for the second fluid, between the transition zones of the adjacent modules, second transition passages emerging on each side of the bundle.