Abstract: The invention relates to a heat exchanger (1), in particular an air-cooled air cooler consisting of a block (2) with first (7) and second (9) flow channels, arranged in a cross-flow configuration, for a first gaseous medium that is to be cooled and a second cooling gaseous medium. According to the invention, the first flow channels (7) are connected on the inlet and outlet side to collection contairers (4) mounted on the block (2) and fins (10) are located in the second flow channels (9).

Abstract: The device for exchanging heat according to the invention includes a flow-through device through which a fluid can flow and a fin-like shaped part around which air can flow and which is joined to the one or more flow-through devices wherein the joint allows exchange of heat to occur between the air and the fluid. According to the invention, the joint includes a plurality of recesses positioned along a longitudinal direction of the one or more fin-like shaped parts.

Abstract: A charge air cooler for internal-combustion engines, having at least two cooling circulations which are guided through heat exchanger blocks which are connected behind one another in the flow direction of the air and have different coolant temperatures. At least the heat transfer block provided as the first heat transfer block in the flow direction of the air is produced of a more erosion-resistant and temperature-stable material than the heat transfer block which fallow and is situated in la high-temperature coolant circuit in which the coolant temperature is selected to be as high as possible.

Abstract: A plate-type heat exchanger for oil/coolant coolers on heat exchange media, as a rule, flow non-uniformly through known plate-type heat exchanger whose hollow chambers are provided with metal turbulence inserts because of the arrangement of these turbulence inserts. For increasing the heat exchange capacity, it is provided to divide the turbulence insert into sections in which a different alignment of rolled metal turbulence sheets takes place in each case. The sections are divided with respect to one another by separating cuts and, because of the different arrangement of their corrugations, have different flow resistances in sections for the flowing-through medium. As a result of this further development, it is possible to achieve a uniform flow in the hollow chambers.

Abstract: A fin-tube block and method of making a fin tube block for heat exchangers is disclosed. Tubes provided for the through-flow of the coolant are manufactured as adjacent channels in an extruded section with a plate shape and then stacked on one another, alternating with corrugated ribs and additional extruded sections in a packet assembly and then soldered.

Abstract: Finned-tube blocks of charge air coolers of stacked construction are provided with end strips forming a tube bottom. Side surfaces of the end strips adjoining the coolant ducts are configured as exterior surfaces of lips projecting in a direction of the corrugated fins, the tips of these lips not touching the corrugated fins. The end strip cross-section, however, uniformly increases toward the side facing away from the corrugated fins. This further development leads to a considerable reduction of thermal induced tension peaks and therefore contributes to lengthening the useful life of charge air coolers provided with such finned-tube blocks.

Abstract: A fin-tube block for a heat exchanger and method of making same are disclosed. The thermal stress on fin-tube blocks of charge air coolers is considerable in the vicinity of the side parts, which can be attributed among other things to the rapid heating of the fin-shaped corrugated ribs and the comparatively slow warming of the side parts. The outermost corrugated rib layer abutting the side parts, opposite to the charge air flow, is displaced forward over the intake edge of the fin-tube block into the intake area for the charge air formed in the side parts and water tanks. In this way, more rapid heating of the side parts can be achieved.

Abstract: A charge air cooler is provided in which, in use, the charge air enters a finned tube block at very high temperatures creating a problem in that the lamella-type corrugated fins heat up abruptly and expand in the transverse direction. In order to eliminate the resulting risks of damage, the finned tube block on the air inlet side is provided with expansion joints extending in parallel to the tubes. The expansion joints extend only to a selected depth into the finned tube block in the air flow direction, which depth is selected such that the temperature of the charge air has already dropped there to such an extent that damage as a result of thermal expansions is no longer a concern.