Abstract: The present invention relates to a cooling module for internal combustion engines, in particular of construction and/or mining machines, having at least one submodule with at least two heat exchangers arranged in a plane, wherein each of the heat exchangers has a network of passages for a medium to be cooled and passages for a cooling medium and manifolds for supplying and discharging the medium to be cooled, wherein the heat exchangers of the at least one submodule are interconnected via at least one connecting element through which the medium to be cooled can flow and the at least one submodule has a frame in which the interconnected heat exchangers are releasably mounted.

Abstract: Heat exchanger, having multiple first flow channels (4) of a cooling medium arranged one over another, second flow channels (5) of a process medium, which are arranged between the first flow channels (4) and are provided on their ends with manifold boxes (7, 8), the first and second flow channels (4, 5) each being formed by partition plates (2) and first and second block profiles (3, 6), which hold these partition plates spaced apart, and lamellae (9, 10) arranged between respective block profiles (3, 6), the first block profiles (3) delimiting the first flow channels (4) being designed as C-shaped, two springy legs (32) extending in the direction of the lamellae (9) from a base (31) of the first block profiles (3) and delimiting a recess (33) open in the direction of the lamellae (9) between them, wherein the base (31) has at least one recess (38, 39) for the flexible design of the base (31) of the first block profiles (3).

Abstract: A manifold profile of a heat exchanger. The manifold profile includes two side walls, a top wall connecting the two side walls, a collecting space enclosed on three sides by the two side walls and the top wall, a receiving opening configured to receive a connection piece, the receiving opening being located on one or more of the two side walls and the top wall.

Abstract: A heat exchanger grid includes a stack including and arranged between end plates and further includes dividing plates and spacers arranged between the end plates to form sealed chambers for at least two heat exchange media. The end plates include one or both of inlet and outlet openings for the at least two media. The dividing plates including first passages aligned with the one or both of the inlet and outlet openings. The first passages are delimited by circumferentially enclosed edges and form collecting channels for the at least two media. The spacers include frames which are delimited circumferentially by rails and which spacers include second and third passages which are aligned at least partly with respect to the one or both of the inlet and outlet openings.

Abstract: A heat exchanger device for refrigeration driers in compressed-air installations is described. Such heat exchanger devices have an air/air heat exchanger (1) and a refrigerant/air heat exchanger (2). According to the invention, the air/air heat exchanger is produced as a plate heat exchanger and the refrigerant/air heat exchanger is produced as a combined tube/plate heat exchanger. The tube/plate heat exchanger has at least one unit containing a tube coil being coiled in a meandering manner and forming two spaced broad sides, and two plates, each plate being fastened at one of the two broad sides (FIG. 1 ).

Abstract: Disclosed is a heat exchanger assembled of a plurality of oval heat exchanging pipes whose end portions are mounted in a leakage proof manner in oval openings of top and bottom plates. The ratio of maximum and minimum diameters of intermediate portions of the pipes if 2.5:1 through 8:1 whereas the ratio of the maximum and minimum diameters of the oval openings in the end plates is 1.2:1 through 3:1. A method of mounting the pipe end portions in the oval openings is based on a preliminary shaping of the end portions by the application of pressure from the outside toward the center axis of the end portions in the direction of their maximum diameter. The preshaped end portions are inserted into sealing collars surrounding the edges of respective plate openings. Thereafter the end portions are expanded by means of mandrels to sealingly close the openings.

Abstract: A heat conducting fin for a heat exchanger is provided with an array of deep drawn collars defining passages with flattened, oval cross-sections for receiving heat exchanging pipes of a corresponding cross-section. In order to prevent the formation of cracks in the collars particularly when a large ratio of the maximum diameter to the minimum diameter of the oval collar involves very small radii of curvatures, the height of the collar in the region of its small radius of curvature is less than in the region of its large radius of curvature. The invention also relates to a heat exchanger including a stack of such fins and a series of heat exchanging pipes passing through the passages in the collars and being attached to the inner walls of the collars by expanding corresponding pipe portions.