Heat-exchange device comprising: - a flow enclosure defined by at least one first lateral plate, referred to as first external plate, and at least one second lateral plate, referred to as second external plate, - a first inlet for a first heat-transfer fluid into the flow enclosure, - a first outlet for said first heat-transfer fluid out of the flow enclosure, - a second inlet for a second heat-transfer fluid into the flow enclosure, - a second outlet for said second heat-transfer fluid out of the flow enclosure, - a plate exchanger block disposed in the flow enclosure so as to be in fluid communication with the inlets (4, 8) and the outlets (6, 10) in order to allow the flow of the first heat-transfer fluid and of the second heat-transfer fluid in and through this exchanger block and the transfer of calories therebetween, said exchanger block being adapted to allow the flow of a first stream of heat-transfer fluid in said flow enclosure in a direction, referred to as main flow direction of the first fluid, between the first inlet and the first outlet, - said exchanger block comprising a plurality of internal plates (13, 14, 15, 16) disposed substantially in parallel with each other between two ends of said exchanger block, each space between two adjacent internal plates defining a layer, referred to as internal layer, for flow of one of said first heat-transfer fluid and of said second heat-transfer fluid, said internal plates being disposed substantially in parallel with said external plates, characterized in that the first internal layer for flow of said first heat-transfer fluid and the last internal layer for flow of said first heat-transfer fluid, referred to as end internal layers, each comprise at least one device, referred to as flow-limiting device, configured to be able to impede, at least in part, the flow of said first stream of fluid in said end internal layer, while allowing the flow of a non-zero stream of fluid in said end internal layer, the internal layers, referred to as central internal layers, disposed between said first internal layer and said last internal layer having no flow limiting device, and each flow limiting device comprising at least one planar portion extending substantially orthogonally to said main flow direction of the first fluid. - a flow enclosure defined by at least one first lateral plate, referred to as first external plate, and at least one second lateral plate, referred to as second external plate, - a first inlet for a first heat-transfer fluid into the flow enclosure, - a first outlet for said first heat-transfer fluid out of the flow enclosure, - a second inlet for a second heat-transfer fluid into the flow enclosure, - a second outlet for said second heat-transfer fluid out of the flow enclosure, - a plate exchanger block disposed in the flow enclosure so as to be in fluid communication with the inlets (4, 8) and the outlets (6, 10) in order to allow the flow of the first heat-transfer fluid and of the second heat-transfer fluid in and through this exchanger block and the transfer of calories therebetween, said exchanger block being adapted to allow the flow of a first stream of heat-transfer fluid in said flow enclosure in a direction, referred to as main flow direction of the first fluid, between the first inlet and the first outlet, - said exchanger block comprising a plurality of internal plates (13, 14, 15, 16) disposed substantially in parallel with each other between two ends of said exchanger block, each space between two adjacent internal plates defining a layer, referred to as internal layer, for flow of one of said first heat-transfer fluid and of said second heat-transfer fluid, said internal plates being disposed substantially in parallel with said external plates, the internal layers, referred to as central internal layers, disposed between said first internal layer and said last internal layer having no flow limiting device, and each flow limiting device comprising at least one planar portion extending substantially orthogonally to said main flow direction of the first fluid.