Abstract: A heat exchanger may include a heat exchanger block including a plurality of flat tubes held at a longitudinal end side in a respective rim hole of an associated tube plate. The respective rim hole may have at least two mutually opposite and substantially straight long sides and at least two mutually opposite narrow sides. A brazed connection may be disposed between at least one of the at least two long sides of at least one of the respective rim holes and a corresponding one of the flat tubes arranged therein, and the brazed connection may have an undulating brazing boundary. At least one of the plurality of flat tubes may include at least one partition. The undulating brazing boundary may have a high point that defines an increased thickness in relation to a plane running through two opposite groove bases disposed in the tube plate.

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: The invention relates to a fluid channel for a heat exchanger, comprising a metal sheet, wherein the metal sheet has at least one core region of an aluminum base alloy and at least one structure arranged inside the fluid channel, wherein the structure lies against a surface of the metal sheet and can be soldered to the metal sheet in a flux-free manner by way of a first soldering location in a soldering operation, and wherein a soldering region of the metal sheet and a counterpart lie against one another and can be soldered to one another in the same soldering operation as a second soldering location while wetting with flux, wherein an open path between the two soldering locations exists before the soldering operation.

Abstract: A motor vehicle may include a radiator arrangement. The radiator arrangement may include a radiator grill having a cooling air inlet and a radiator arranged behind the cooling air inlet with respect to a forward traveling direction. A flow-directing device may be arranged to direct a cooling air flow from the cooling air inlet to the radiator. The flow-directing device may include at least one baffle element disposed on a radiator-grill side of the radiator arrangement and at least one other baffle element disposed on a radiator side. Additionally or alternatively, the flow-directing device may include a bellows arranged on the radiator-grill side or on the radiator side. Additionally or alternatively, the flow-directing device may include at least one rail including a groove and at least one rail baffle element guided in the at least one guide groove.

Abstract: A tube bottom for a heat exchanger, with a bottom region having slot-type openings, wherein the slot-type openings are rimmed by eyelets and the tube bottom has an attached rim region. Formed between the eyelets and the attached rim region is a U-shaped trough as a receiving region for the foot of a box-like cover. The U-shaped trough has an inner first wall, the attached rim region and a second wall forming the trough bottom, wherein the inner first wall has at least one hump-like raised portion in the continuation of an eyelet on a side oriented toward the U-shaped trough, which bounds the breadth of the U-shaped trough between the attached rim region and the first wall and extends from the trough bottom to that end region of the eyelet oriented toward the U-shaped trough. A depression is formed in the hump-like raised portion.

Abstract: A heat exchanger may include a heat exchanger block including a plurality of flat tubes held at a longitudinal end side in a respective rim hole of an associated tube plate. The respective rim hole may have at least two mutually opposite and substantially straight long sides and at least two mutually opposite narrow sides. A brazed connection may be disposed between at least one of the at least two long sides of at least one of the respective rim holes and a corresponding one of the flat tubes arranged therein, and the brazed connection may have an undulating brazing boundary. At least one of the plurality of flat tubes may include at least one partition. The undulating brazing boundary may have a high point that defines an increased thickness in relation to a plane running through two opposite groove bases disposed in the tube plate.

Abstract: A motor vehicle may include a radiator arrangement. The radiator arrangement may include a radiator grille having a cooling air inlet and a radiator arranged behind the cooling air inlet with respect to a forward traveling direction. A flow-directing device may be arranged to direct a cooling air flow from the cooling air inlet to the radiator. The flow-directing device may include at least one baffle element disposed on a radiator-grille side of the radiator arrangement and at least one other baffle element disposed on a radiator side. Additionally or alternatively, the flow-directing device may include a bellows arranged on the radiator-grille side or on the radiator side. Additionally or alternatively, the flow-directing device may include at least one rail including a groove and at least one rail baffle element guided in the at least one guide groove.

Abstract: Methods of improved monitoring, testing and/or culturing of ova and/or sperm for in vitro fertilization are described herein. Methods of improved monitoring, testing and/or culturing of embryos during ex vivo pre-implantation selection are also described. The ova, sperm or embryos may be derived from wild animals or zoo animals. The ova, sperm or embryos can be mammalian, such as human, bovine, porcine, ovine, caprine, equine, canine, feline, murine, or the like.

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: The invention relates to a heat exchanger comprising a block, which has fins and pipes and which is arranged between two reservoirs, wherein each fin comprises several fin sections and each fin section is approximately V-shaped and the two flanks forming a fin section each have several air slits, which extend perpendicularly to the flow direction of a medium flowing through the fin section, wherein the two flanks of the fin section are connected by means of a first connecting surface and/or the flanks of two consecutive fin sections across from each other are connected by means of a second connecting surface, wherein the first connecting surface and/or the second connecting surface has a fin section cross-section variation element, which is directed into the intermediate space between the flanks forming a fin section and/or the flanks of two consecutive fin sections that are across from each other.

Abstract: The invention relates to a fluid channel for a heat exchanger, comprising a metal sheet, wherein the metal sheet has at least one core region of an aluminium base alloy and at least one structure arranged inside the fluid channel, wherein the structure lies against a surface of the metal sheet and can be soldered to the metal sheet in a flux-free manner by way of a first soldering location in a soldering operation, and wherein a soldering region of the metal sheet and a counterpart lie against one another and can be soldered to one another in the same soldering operation as a second soldering location while wetting with flux, wherein an open path between the two soldering locations exists before the soldering operation.

Abstract: The invention relates to a heat exchanger module (1) for a motor vehicle, comprising at least one heat exchanger (2), preferably a coolant cooler, and laterally arranged plastic module supports (11, 12) which retain the heat exchanger module (1) and support the same on the vehicle. According to the invention, the heat exchanger (2) is provided with two receptacles (4, 5) having two longitudinal faces, one lateral face, and two front faces (4a, 4b, 4c; 5a, 5b, 5c) while the module supports are embodied as slip-on boxes (11, 12) which have the shape of the receptacles (4, 5), embrace the longitudinal, lateral, and front faces (4a, 4b, 4c-, 5a, 5b, 5c) thereof in a positive manner, and are secured to the front faces (4c, 5c) by means of locking hooks and/or snap-in hooks.

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: The invention relates to a heat exchanger module (1) for a motor vehicle, comprising at least one heat exchanger (2), preferably a coolant cooler, and laterally arranged plastic module supports (11, 12) which retain the heat exchanger module (1) and support the same on the vehicle. According to the invention, the heat exchanger (2) is provided with two receptacles (4, 5) having two longitudinal faces, one lateral face, and two front faces (4a, 4b, 4c; 5a, 5b, 5c) while the module supports are embodied as slip-on boxes (11, 12) which have the shape of the receptacles (4, 5), embrace the longitudinal, lateral, and front faces (4a, 4b, 4c-, 5a, 5b, 5c) thereof in a positive manner, and are secured to the front faces (4c, 5c) by means of locking hooks and/or snap-in hooks.

Abstract: The invention relates to a heat transmitter arrangement (1) comprising a first heat transmitter (2), a second heat transmitter (3) and a third heat transmitter (4) which are arranged in parallel and configured as a single piece. Seen from the direction in which the air flows, two of the heat transmitters are arranged at the same level.

Abstract: The invention relates to a multi-chamber tube (1) produced from a flat strip (2) by welding along the longitudinal face, comprising two planar side faces (10, 11), two curved narrow edges (12, 13) and folded webs (7, 8, 9), made from the flat strip (2) which divide adjacent chambers (3, 4, 5, 6) and which are soldered to the inner wall of the tube (11?). According to the invention, the webs (7, 8, 9) are formed from only one side face (10) of the multi-chamber tube (1) and the other side face (11) has an essentially flat embodiment.

Abstract: A folded multi-passageway flat tube is disclosed, which is made from a flat sheet metal strip and has folded webs and a longitudinal seam. Through-openings for improving the heat transfer and for generating transverse flow are provided in the folded webs. The through-openings are advantageously made by punching in the flat sheet metal strip, that is to say before folding, and are made congruent after folding. These folded multi-passageway flat tubes are preferably used for refrigerant condensers in motor vehicle air-conditioning systems.

Abstract: A folded multi-passageway flat tube is disclosed, which is made from a flat sheet metal strip and has folded webs and a longitudinal seam. Through-openings for improving the heat transfer and for generating transverse flow are provided in the folded webs. The through-openings are advantageously made by punching in the flat sheet metal strip, that is to say before folding, and are made congruent after folding. These folded multi-passageway flat tubes are preferably used for refrigerant condensers in motor vehicle air-conditioning systems.

Abstract: A multi-chamber tube for a heat exchanger arrangement of a motor vehicle has at least two chamber sections which extend parallel to each other and side-by-side. Different liquid or gaseous heat transfer media are used in the chamber sections which have widths significantly greater than their heights. At least one chamber section has a greater height than at least one other chamber section. The multi-chamber tube is used in a coolant radiator and charge air cooler combination.

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.