Abstract: The invention relates to an oil cooler, especially for cooling the transmission oil of a motor vehicle, which includes a guide channel for the oil to be cooled extending in a region where it is subjected to a cross-flow of a cooling medium. The oil guide channel is constructed with two walls of folded, curved sheet metal, between which walls the oil is guided. The folded sheet metal cooler construction offers an improved heat exchange capacity as compared to previously used double pipe or double tube coolers. In especially advantageous embodiments of the invention, the oil is restrictively guided through the folded sheet metal cooler body so that a long path or passage for the flow-through of the oil results, whereby the heat exchange capacity is yet further increased.

Abstract: An oil cooler arrangement for internal-combustion engines is described which is used in particular for installation between the engine and an oil filter. The heat exchange space of this oil cooler through which the oil flows is formed as a housing chamber into which a heat exchange body is tightly placed through which the coolant, in particular, water, flows. The heat exchange body includes many parallel pipes, the ends of which are held in the bottoms of two oppositely disposed coolant collecting spaces. This design permits the production of oil coolers without soldering or welding processes. The water flow-through through the parallel pipes is also exactly defined.

Abstract: An oil radiator (16) containing heat exchanger water box has oil inlet/outlet tubes (22) passing through openings in the wall of the water box, which openings are of greater diameter than the diameter of said oil inlet/outlet tubes or of their flanges (26) in order to enable the oil radiator to be placed inside a water box (34) of normal width (L'). The invention is applicable to motor vehicle heat exchangers.

Abstract: Heat exchanger, especially a combined cooling water filter device and oil cooler for sea-water cooled boat motors, in which the cover of the filter container is built together with a container extending down into the filter container and having an inlet and an outlet for the oil to be cooled. A bowl-shaped member inside the oil container conducts oil flowing from the inlet to the outlet along the wall of the oil container.

Abstract: The invention relates to improvements in heat exchangers of the type having a container which defines a cylindrical cavity and a cluster of parallel cooling tubes extending through the cylindrical cavity. The housing is provided with a fluid inlet, a fluid outlet, and a center baffle dividing the cylindrical cavity into an inlet compartment and an outlet compartment. The inlet and the outlet are located on opposite sides of the center baffle, but near one edge thereof. An opening is provided near the opposite edge of the baffle, such that fluid must circulate through a nearly circular path within the cylindrical housing between the inlet and the outlet conduits. A second fluid such as cool air, may be blown through the parallel tubes for removing heat from the fluid in the cavity.

Abstract: A plate and fin type heat exchanger in which different flowing fluids are placed in a segregated heat transfer relation and in which provision is made to deny opportunity for a leaked fluid from one flow or circuit to join or mix with fluid of another flow or circuit. A concept of vented buffer zones is used to protect against leakage through plate elements and through defined joints between plate and spacer elements. The concept allows and provides for relatively simple manifolding and for fabrication to conventional configurations using for the most part standard easily manufactured parts.

Abstract: A motor vehicle radiator has a tubular oil cooler 12 located in its header tank defined by a plastics header tank shell 11 and a tube plate 20. Passage of oil to the oil cooler is effected through connectors 14 which include an elastomeric sealing bush 16 which is tapered internally in its undeformed state such that upon insertion of a connecting piece 15 the bush is expanded radially outwardly into sealing contact with the header tank shell.

Abstract: The drawings and description disclose a heat exchanger including two half circle shells, each having corrugated walls, with the half circle shells being welded together at their mating edges to form a full round shell. Prior to the welding operation, a perforated header is mounted in the half shells in the first corrugation adjacent each end thereof, and a plurality of perforated baffles are mounted within the half shells intermediate the headers in corrugations at alternate equally spaced intervals therein. The perforations in the headers and baffles are formed to be aligned, and a tube is mounted through each series of aligned openings to form a tube bundle within the half shells. The two half shells are welded together at their mating edges to form the full round shell, and the headers are brazed to the shell and the tube end portions brazed to the headers.