Abstract: A heat exchanger for an exchange of heat between a first fluid and a second fluid includes a block including: a plurality of flow ducts configured to be traversed by the first fluid, and a housing that holds the flow ducts and is configured to be traversed by the second fluid; a base connected to the block, the base including one or more passage openings for the flow ducts, the base comprising a first base part and a second base part; and at least one casing cover that is in fluid-communication with the flow ducts and that is attached to the base.

Abstract: A heat exchanger, particularly for charge air or exhaust gas, performs heat exchange between a first fluid and a second fluid, and includes heat exchanging guides for the first and second fluids, the guides being separated from each other in a core, the core having a plurality of flow channels through which the first fluid flows, and a housing that receives the flow channels and through which the second fluid flows. The heat exchanger also includes at least one compartment lid, which is flow-connected to the flow channels, and a base that is attached to the compartment lid and that is equipped with one or more passage openings for flow channels. The compartment lid is attached to the base via one or more connections which connections are bolted connections and/or a slotted crimping.

Abstract: A heat exchanger for an exchange of heat between a first fluid and a second fluid includes a block including: a plurality of flow ducts configured to be traversed by the first fluid, and a housing that holds the flow ducts and is configured to be traversed by the second fluid; a base connected to the block, the base including one or more passage openings for the flow ducts, the base comprising a first base part and a second base part; and at least one casing cover that is in fluid-communication with the flow ducts and that is attached to the base.

Abstract: Specified is a heat exchanger for an exchange of heat between a first fluid, in particular charge air or an exhaust gas, and a second fluid, in particular a coolant, having a block for the separate and heat-exchanging guidance of the first and second fluids, which block has a number of flow ducts which can be traversed by the first fluid and a housing which holds the flow ducts and which can be traversed by the second fluid, at least one casing cover which is flow-connected to the flow ducts, a base which is fixed to the casing cover and which is provided with one or with a plurality of passage openings for the flow ducts, wherein the base is composed of at least one first base part and a second base part.

Abstract: A heat exchanger, particularly a charge air heat exchanger or exhaust gas heat exchanger, is provided for the heat exchange between a first fluid, particularly a charge air, or an exhaust gas, and a second fluid, particularly a coolant, comprising the following: heat exchanging guides for the first and second fluids, the guides being separated from each other in the core, the core having a plurality of flow channels through which the first fluid flows, and a housing that receives the flow channels and through which the second fluid flows at least one compartment lid, which is flow-connected to the flow channels, and a base that is attached to the compartment lid and that is equipped with one or more passage openings for flow channels.

Abstract: Specified is a heat exchanger for an exchange of heat between a first fluid, in particular charge air or an exhaust gas, and a second fluid, in particular a coolant, having a block for the separate and heat-exchanging guidance of the first and second fluids, which block has a number of flow ducts which can be traversed by the first fluid and a housing which holds the flow ducts and which can be traversed by the second fluid, at least one casing cover which is flow-connected to the flow ducts, a base which is fixed to the casing cover and which is provided with one or with a plurality of passage openings for the flow ducts, wherein the base is composed of at least one first base part and a second base part.

Abstract: The invention relates to a frame part for a shell-and-tube heat exchanger. The frame parts should be designed so that given a simplified producibility of the frame parts, a complete compensation for expansion in the longitudinal direction as well as in the transverse direction of the frame part is nevertheless ensured. According to the invention, a frame part for a shell-and-tube heat exchanger comprises a number of tubes, which are parallel to one another, form a tube body, and are flowed through by a heat exchanging medium. The tube body is surrounded by frame parts at least on two sides that are parallel to the tubes. At least one thermal expansion element is formed at least in the frame parts that are oriented parallel to the tubes. The thickness of this thermal expansion element is at least a multiple of that of the material of the frame part where it deviates.

Abstract: A method and a device for the draw expansion of metal tubes of oval cross-section uses expansion elements drawn unidirectionally through metal tubes by means of draw elements. The expansion elements are fastened to the draw elements by suspension devices which have a hammer-like contour. The draw elements are preferably made of a rod-shaped material. An apparatus of the invention is an apparatus for mechanically expanding metallic tubes, in particular tubes in heat exchangers. Each individual tube to be expanded is held in at least one holding device and passed through by a drawing mandrel with an expanding element. To prevent jamming of the expanding element in one of the holding devices, the holding devices are provided with lateral guides which are resiliently compliant outward in the radial direction. When the expanding element passes through the metallic tube, the tube is expanded in the radial direction.

Abstract: The fin for a heat exchanger which consists essentially of a matrix of tubes and of fins disposed transversely to the latter, the fin having pass-through elements to receive tubes which are to be joined mechanically, while a first, preferably liquid medium flows through the tubes and the fin is acted on by a second, preferably gaseous medium. Multiple fins are positioned in their fin pitch by integral spacers, wherein the spacers are in the form of noses stamped out of the pass-through elements and distributed over the periphery of the latter.

Abstract: A heat exchanger, produced by the insertion of welded pipes into a rib pack, has a good connection between the rib pack and the pipes after expansion of the pipes. An optimal contact of the pipes against the passages in the cooling fins of the rib pack is achieved because the weld base of the welded pipe lies in a recess. The recess is formed by reduction of the wall thickness of a strip material from which the welded pipe is produced.

Abstract: A method and a device for the draw expansion of metal tubes of oval cross-section uses expansion elements drawn unidirectionally through metal tubes by means of draw elements. The expansion elements are fastened to the draw elements by suspension devices which have a hammer-like contour. The draw elements are preferably made of a rod-shaped material. An apparatus of the invention is an apparatus for mechanically expanding metallic tubes, in particular tubes in heat exchangers. Each individual tube to be expanded is held in at least one holding device and passed through by a drawing mandrel with an expanding element. To prevent jamming of the expanding element in one of the holding devices, the holding devices are provided with lateral guides which are resiliently compliant outward in the radial direction. When the expanding element passes through the metallic tube, the tube is expanded in the radial direction.

Abstract: The fin for a heat exchanger which consists essentially of a matrix of tubes and of fins disposed transversely to the latter, the fin having pass-through elements to receive tubes which are to be joined mechanically, while a first, preferably liquid medium flows through the tubes and the fin is acted on by a second, preferably gaseous medium. Multiple fins are positioned in their fin pitch by integral spacers, wherein the spacers are in the form of noses stamped out of the pass-through elements and distributed over the periphery of the latter.