Abstract: A heat exchanger of a type with a collector plate which has a wall in which are formed rim holes which can receive the ends of tubes of a bundle, wherein the wall of the collector plate is designed such that, for the purpose of a soldered or welded connection to the tubes, it forms collars around the rim holes, and wherein the wall has a front side facing toward the tube bundle and a rear side facing toward the collecting tank. Each collar extends in the direction of the collecting tank from a straight base plane on the rear side of the wall.

Abstract: A heat exchanger of a type with a collector plate which has a wall in which are formed rim holes which can receive the ends of tubes of a bundle, wherein the wall of the collector plate is designed such that, for the purpose of a soldered or welded connection to the tubes, it forms collars around the rim holes, and wherein the wall has a front side facing toward the tube bundle and a rear side facing toward the collecting tank. Each collar extends in the direction of the collecting tank from a straight base plane on the rear side of the wall.

Abstract: A heat exchanger, especially a heat exchanger for a motor vehicle, is provided that includes a plurality of tubes, at least one collecting tube with a wall and openings in the wall, supports protruding from the wall in the axial direction of the openings being formed at the openings. Wherein the tubes in the region of one end of the tubes are disposed partly at the supports and a fluid-tight connection exists between the supports and the tubes, so that a fluid can be passed through the tubes and the at least one collecting tube, and at least one inlet opening for passing the fluid in and at least one outlet opening for passing the fluid out. The mechanicals stability between the tubes and the at least one collecting tube is to be improved. This objective is accomplished owing to the fact that the thickness of the supports is less than the thickness of the wall, especially in the region of the openings of the collecting tube.

Abstract: The invention relates to a casing for holding a coolant for heat exchanger (1) for motor vehicles, said casing having two side walls (22, 24 and 22a, 24a) two front walls (26, 28, and 26a, 28a), a cover (18 and 18a) and a base (20 and 20a) lying opposite the cover (18 and 18a), said base being provided with one or more openings (60) for receiving tubes, in particular connecting tubes such as flat tubes. According to the invention, the base (20 and 20a) and at least one of the two side walls (26, 28 and 26a, 28a) consist of a one-piece shaped part, produced in a forming method.

Abstract: The invention relates to a casing for holding a coolant for a heat exchanger (1) for motor vehicles, said casing having two side walls (22, 24, and 22a, 24a), two front walls (26, 28 and 26a, 28a), a cover (18 and 18a) and a base (20 and 20a) lying opposite the cover (18 and 18a), said base being provided with one or more openings (60) for receiving tubes, According to the invention, the casing consists of a single formed, in particular folded, shaped part, said formed shaped part, in particular a sheet metal blank, forming the two side walls (22, 24 and 22a, 24a), the two front walls (26, 28 and 26a, 28a), the cover (18 and 18a) and the base (20 and 20a).