Abstract: Process for the manufacture of a heat exchanger, in particular an evaporator, comprising the preparation, assembling and brazing of components of the heat exchanger, the brazing being carried out under given temperature conditions. Prior to the assembling and to the brazing, a surface treatment operation is carried out that includes applying a coating to a chosen component, the coating including a support, at least one active agent suitable for giving the heat exchanger chosen properties during its operation, and at least one thermal protection agent suitable for enabling the coating to withstand the brazing temperature conditions.

Abstract: Process for the manufacture of a heat exchanger, including a surface treatment, and heat exchanger thus obtained Process for the manufacture of a heat exchanger, in particular an evaporator, comprising the preparation (A), assembly (B) and brazing (C) of components of the heat exchanger (1), the brazing (C) being carried out under given temperature conditions. Prior to the assembling (C) and to the brazing (B), a surface treatment operation (A101, A114) is carried out, consisting in applying a coating (102) to a chosen component (6), said coating comprising a support, at least one active agent suitable for giving the heat exchanger (1) chosen properties during its operation, and at least one thermal protection agent suitable for enabling the coating (102) to withstand the brazing temperature conditions.

Abstract: The invention concerns a method for brazing a heat exchanger folded tube (10), including the following operations: contacting a first tube part (20) against a support surface of a second tube part (22) at a contact zone, and brazing the first and second tube parts at said contact zone, using an input of brazing and a brazing flux (32), to form a brazed link. Such a brazing method is particularly suitable for making heat exchanger tubes having a generally B-shaped cross-section and delimiting two parallel channels (30) of fluid flow. However, said brazing method can also be used for making other types of tube from one or several metal bands.