Patent ID: 8468697

Claim:
Method for producing a heat exchanger system comprising at least one module ( 1 ) traversed by a row of fluid circulation channels ( 2 ), the embodiment of said module being implemented as follows: formation of an assembly ( 4 ) comprising, in parallel, a plurality of metal conduits ( 10 ) each forming, with the inner space ( 16 ) thereof, one of said fluid circulation channels ( 2 ), said conduits being arranged between two metal plates ( 6 , 6 ), and the spaces ( 17 ) defined by the directly consecutive conduits and said metal plates being filled by a metal filling substance ( 8 ), said assembly ( 4 ) also including two metal connection elements ( 20 , 20 ), one being provided with a plurality of through orifices ( 22 ) respectively housing one of the two ends of the conduits, and the other being provided with a plurality of through orifices ( 22 ) respectively housing the other of the two ends of the conduits; and treatment of said assembly ( 4 ) so as to obtain diffusion welding of the conduits ( 10 ) with said metal filling substance ( 8 ), with said plates ( 6 , 6 ), and with the two metal connection elements ( 20 , 20 ); wherein material removal is carried out on one of the two metal connection elements ( 20 ) between two directly consecutive orifices ( 22 ), so as to create a joining channel ( 32 ) between these two orifices, and a closing plate ( 34 ) is positioned on said connection element ( 20 ) to seal said joining channel ( 32 ) between the two directly consecutive orifices.