Abstract: A device for the exchange of heat between a first and a second medium with pairs of trays stacked one on top of the other in a stacking direction is provided, wherein a first flow chamber that can be flowed through by a first medium is provided between the two trays of at least one pair of trays or several pairs of trays and a second flow chamber that can be flowed through by a second medium is provided between two pairs of trays adjacent to one another, wherein the first flow chamber has first flow path with flow path sections that can be flowed through consecutively in opposite directions for the first medium, which are separated from one another by a division wall arranged between the at least two trays of the at least one pair of trays, and wherein the second flow chamber has a second flow path for the second medium.

Abstract: An exhaust gas installation is provided that comprises an exhaust gas evaporator mounted downstream of an internal combustion engine of a motor vehicle. The exhaust gas evaporator has a sandwich-type structure wherein exhaust gas planes and coolant planes are alternately directly adjacently arranged, providing a very compact while very efficient exhaust gas evaporator.

Abstract: A device for the exchange of heat between a first and a second medium with pairs of trays stacked one on top of the other in a stacking direction is provided, wherein a first flow chamber that can be flowed through by a first medium is provided between the two trays of at least one pair of trays or several pairs of trays and a second flow chamber that can be flowed through by a second medium is provided between two pairs of trays adjacent to one another, wherein the first flow chamber has first flow path with flow path sections that can be flowed through consecutively in opposite directions for the first medium, which are separated from one another by a division wall arranged between the at least two trays of the at least one pair of trays, and wherein the second flow chamber has a second flow path for the second medium.

Abstract: A heat exchanger is provided, in particular an exhaust gas evaporator of a motor vehicle, including a heat exchanger block, a first axial terminating device and a second axial terminating device, in which the heat exchanger block has axial inlet openings and axial outlet openings, and in which means for forming a positive fit with the axial terminating devices are situated on the heat exchanger block, the means for forming the positive fit projecting at least partially over the axial inlet openings and/or over the axial outlet openings in the heat exchanger block in the axial direction, such that they may be situated radially next to contact shoulders of the axial terminating devices, thereby providing a heat exchanger that is particularly pressure-resistant in the radial direction.