Abstract: A heat exchanger has a plurality of rows of media guiding ducts (12) for passing a media flow, a plurality of rows of fluid ducts for passing fluid to be temperature-controlled, and strip-shaped flow profile parts (20). At a transition between guide parts of the flow profile parts (20) and their plug-in parts, two mutually opposite steps are formed. The steps allow the flow profile part (20) to sit on the adjacent end faces of a fluid duct without spacing. The flow profile part (20) does not project at any point into a free opening cross section, which is defined by the imaginary extension of the inner, mutually facing boundary walls of a media duct (12) and by a media inlet of this duct (12).

Abstract: A cooler has individual cooling elements (1) of stacked construction having ducts (25) extending in parallel to one another, Each duct delimits a flow chamber (29) for the throughflow of a liquid medium to be cooled. Between each pair of ducts. at least two layers (3, 5) of individual rows of meandering fins (34) extend for the throughflow of air and jointly delimit a further flow chamber (26, 28) each. The respective one flow chamber (29), free of obstacles, permits a laminar flow of the liquid medium through the assignable duct (25) in one throughflow direction. The height (H1) of each fin (34), viewed transversely to the direction of throughflow of the liquid medium, has at least the same height as the free throughflow cross section of the flow chamber (29) of the adjacently arranged duct (25), viewed in parallel to the extension of the respective fin (34).

Abstract: A heat exchanger, at least comprising a plurality of rows of media guiding ducts (12) for passing a media flow and a plurality of rows of fluid ducts for passing fluid to be temperature-controlled, and having strip-shaped flow profile parts (20), wherein at a transition between the respective guide part of the flow profile parts (20) and their plug-in part two mutually opposite steps are formed, which allow the flow profile part (20) to sit on the adjacent end faces of a fluid duct without spacing, wherein the flow profile part (20) does not project at any point into a free opening cross section, which is defined by the imaginary extension of the inner, mutually facing boundary walls of a media duct (12) and by a media inlet of this duct (12).

Abstract: A cooler, having individual cooling elements (1) of stacked construction having ducts (25) extending in parallel to one another, each of which delimits a flow chamber (29) for the throughflow of a liquid medium to be cooled, between which at least two layers (3, 5) of individual rows of meandering fins (34) extend, which for the throughflow of air jointly delimit a further flow chamber (26, 28) each, is characterized in that the respective one flow chamber (29), free of obstacles, permits a laminar flow of the liquid medium through the assignable duct (25) in one throughflow direction, in that the height (H1) of each fin (34), viewed transversely to the direction of throughflow of the liquid medium, has at least the same height as the free throughflow cross section of the flow chamber (29) of the adjacently arranged duct (25), viewed in parallel to the extension of the respective fin (34), and in that in every layer (3, 5), a plurality of rows (36) of several fins (34) are arranged in succession, which each v