Abstract: A plate and fin type heat exchanger is disclosed which can be made in any convenient size with minimum tooling required. The heat exchanger is made from a plurality of stacked plate pairs having raised peripheral edge portions to define flow channels inside the plate pairs. The plates of the plate pairs are formed with offset, diverging end flanges that space the plate pairs apart. A U-shaped channel envelops the plate end flanges to form part of a manifold at each end of the plate pairs. End caps or plates close the open ends of the U-shaped channels to complete the manifolds, and inlet and outlet openings are formed in the manifolds as desired to complete the heat exchanger.

Abstract: A side member for a heat exchanger has a portion which is adapted to preferentially break under low tension to alleviate problems caused by expansion, whilst retaining integrity under normal transport movements.

Abstract: A heat-exchange module has a main exchanger and at least one secondary exchanger, each having a body with fluid-circulation tubes, and cooling fins, the secondary exchanger being fixed onto the main exchanger. The module includes a set of fins common to the main exchanger and to at least one secondary exchanger, these fins being mounted on the tubes of the main exchanger and projecting from this exchanger, the projecting parts of the fins including cut-outs for accommodating the tubes of the secondary exchanger. Fastenings secure the secondary exchanger in the position in which its tubes are engaged in the cut-outs.

Abstract: An automotive heat exchanger module comprises a radiator and condenser with conventional side manifold tanks and upper and lower, channel shaped reinforcements. Neither heat exchanger has any brackets or other provision for attachment to the vehicle by separate fasteners. Instead, a center mounted fan module has rectangular front and rear openings the upper and lower edges of which comprise integral features within which the upper and lower core reinforcements are captured and held with a simple push fit.

Abstract: A heat exchanger includes a pair of manifolds, each of which has a plurality of axially spaced oblong slots, and each of which has at least two detents formed therein. A plurality of generally flat tubes extends between the manifolds and individually through the slots for providing fluid communication between the manifolds. A plurality of radiation fins extends between adjacent flat tubes. A plurality of brackets is provided for mounting the heat exchanger. Each of the brackets comprises a first member and a second member, and each of the first member and the second member including a curved portion and a flange portion. Each curved portion extends circumferentially around a portion of manifold and captures the manifold therein. Each curved portion has at least one protrusion which extends into one of the detents in the manifold. The flange portion connected to the curved portion.

Abstract: A radiator assembly for a work machine is disclosed. The radiator assembly includes an engine cowling having a mounting flange secured thereto. A radiator is secured to the mounting flange. A bulb seal is provided to create an air-tight seal between the mounting flange and a heat exchange assembly of the radiator. The radiator assembly also includes a rear shroud and a fan assembly for creating a flow of air through the radiator assembly. The radiator assembly disclosed herein reduces the frequency and magnitude of vibrations or loads exerted on the radiator during operation of the work machine. Moreover, by creating an air-tight seal between the radiator and the engine cowling, leakage of air around the heat exchange assembly of the radiator is reduced relative to radiator assemblies which have heretofore been designed thereby increasing the efficiency associated with the work machine's cooling system.

Abstract: An improved heat transfer assembly for a motor vehicle is provided. Typically, a heat transfer assembly has a fin/tube block consisting of flat tubes and corrugated ribs. The ends of the flat tubes are widened, and collection containers are installed at the widened tube ends. According to the invention, each collection container is kept open laterally with respect to the longitudinal axis. Side parts have end sections with opposing front ends facing the collection container. These opposing front ends close off the open side areas of the collection containers. One use of the heat transfer assembly is as a radiator in a motor vehicle.

Abstract: One end sides of two sets of pressed-type headers, which have been molded by an existing press, are cut off, respectively, the cut-off portions of thus obtained one-side-cut-off headers are abutted together and are welded to each other, and a nozzle is welded to the position of a welded portion. With this construction, a large header, which is larger than the pressed-type header, can be manufactured, and the use of which permits a large plate-fin type heat exchanger, that can be used at high pressure, to be manufactured.

Abstract: A heat exchanger has a condenser having a condenser tank and a radiator having a radiator tank. An end of the condenser tank in a longitudinal direction thereof is closed by a condenser tank cap, and an end of the radiator tank in a longitudinal direction thereof is closed by a radiator tank cap. A bracket through which the heat exchanger is mounted to a vehicle is secured to the end of the radiator tank in the longitudinal direction thereof so that a cavity is formed between the radiator tank cap and the bracket. As a result, heat is restricted from being transmitted from the radiator tank to the bracket. Therefore, heat is restricted from being transmitted from the radiator to the condenser through the bracket to maintain heat exchange performance of the condenser.

Abstract: A heat exchanger having a side support with a variable compression tab member is disclosed. The tab member engages a brazing fixture used in manufacturing the core and prevents damage to the fins of the core form the brazing fixture.

Abstract: In a “stacked” type heat exchanger having a stack of elements through the interior of which a first fluid flows and having a core support arranged at the end of the stack in the stacked direction, the core support includes slits that extend from its edges up to the central portion, the slits capable of slightly deforming when subjected to a thermal stress. It is thus possible to reduce the thermal stress which may be applied to both the core support and the elements when there arises a difference of thermal expansion therebetween.

Abstract: The present invention provides a radiator achieving a structure that enables integrated brazing, facilitates mounting of an automatic oil cooler and repair on areas with defective brazing and realizes good mountability and recyclability. A tank portion 4 at which tubes 2 of the radiator are inserted is constituted of a first L-shaped tank member 30 and a second L-shaped tank member 40. Prior to the process for assembling the tank portion 4, intake/outlet pipes 9 and 10 are mounted at the first L-shaped tank member 30 and an A/T oil cooler 46 is mounted at the second L-shaped tank member 40 to facilitate mounting of the A/T oil cooler 46 inside the tank portions 4. In addition, since at least the tank portion 4, the tubes 2, the fins 3 and the side plate 11 are brazed together as an integrated unit in a furnace, the production of the radiator is facilitated.

Abstract: A double heat exchanger including a radiator and a condenser for an air conditioner is mounted on a vehicle through first and second brackets. When the radiator is detached from the vehicle, a bolt for securing a side plate of the radiator to the second bracket is removed firstly, and the radiator is inclined in a front-rear direction of the vehicle. Thereafter, the radiator is pulled upwardly to be detached from the first bracket. When the radiator is attached to the vehicle, a first extending portion of the side plate of the radiator is inserted between first and second holding portions of the first bracket. In this state, the radiator is moved to contact an inclining member of the first bracket, and is fastened to the second bracket through the bolt. Thus, the radiator is readily detached from and attached to the vehicle and requires a small mounting space.

Abstract: The combination of a heat exchanger and support structure for the heat exchanger. The heat exchanger includes a first tube sheet having a planar mounting flange which has at least one opening formed therein. The opening defines an edge facing in a predetermined direction. A second tube sheet has a second planar mounting flange which also has at least one opening formed therein, which defines an edge facing in the same predetermined direction. The two tube sheets are spaced from one another with the first and second mounting flanges lying in substantially the same plane. The support structure includes a first planar support surface adapted to receive the flange of the first tube sheet in parallel confronting relationship. The support surface has integrally formed therein an upstanding structural protrusion, which includes a root section and an upper enlarged section, which is configured to pass through the openings in the first flange.

Abstract: A connecting structure for connecting a radiator having a reinforcement member and a condenser having a bracket is provided. The structure includes a connecting member having a spacer portion and a holding portion integrally formed on opposite sides of a notch. The spacer portion is fittingly inserted into the reinforcement member, and a folded portion of the reinforcement member and the condenser bracket are inserted into the notch. A bolt is inserted through the reinforcement member, the spacer portion, the bracket and the holding portion and a nut is screwed onto a tip of the bolt for clamping the radiator and the condenser together.

Abstract: A radiator assembly for a cooling system on an internal combustion engine includes a radiator core having a plurality of tube-flow passages for transferring heat from fluid coolant to ambient atmosphere and at least one tank in fluid communication between an internal combustion engine and the radiator core. The radiator core includes a header flange extending about at least a portion of a perimeter of the radiator core and the tank includes a clamping flange extending about at least a portion of a perimeter of the tank corresponding to and in adjacent relationship with the header flange of the radiator core.

Abstract: A heat exchanger for an automobile radiator having a matrix of tubes extending through a stack of fins. The matrix has lateral faces having free edges of the fins which are protected by a side cover. The side cover comprises a spine portion and two side branches terminated in anchor hooks which engage with lateral notches on the fins. The spine portion is substantially flat and has on its internal face a longitudinal rib, which makes contact with the free edges of the fins.

Abstract: A sideplate for a heat exchanger has a double-folded flange on both sides of an elongate web portion. The sideplate has braze cladding on one side only, to prevent discoloration problems during brazing.

Abstract: A radiator includes a core portion, a header tank, a side plate attached to the core portion and a bracket through which the radiator is mounted to a vehicle. The bracket is separately formed from the header tank, and is connected to the side plate through a bolt. As a result, the radiator is readily mounted to a vehicle of a different model by only changing an attachment position of the bracket to the radiator, without modifying the header tank. Further, the bracket includes a coolant receiving portion disposed to face a drain outlet of the header tank with a predetermined gap therebetween. Therefore, coolant discharged from the header tank collides with the coolant receiving portion to reduce its dynamic pressure. As a result, coolant drained from the radiator is restricted from being scattered.

Abstract: A heat exchanger is provided including a first aluminum extruded header spaced apart and arranged essentially parallel to a second aluminum extruded header. The first and second headers include a plurality of parallel passageways extending therethrough along a longitudinal axis thereof. The passageways are fluidly interconnected by at least one transverse cross-drilled bore extending essentially perpendicularly to the longitudinal axis. A core assembly is secured between the first and second headers including a plurality of fluid conduits and heat radiating fins surrounding the fluid conduits. A by-pass valve assembly fluidly communicates with the headers and core assembly while providing an alternate pathway independent thereof. Preferably, the by-pass assembly is responsive to fluid temperature and/or pressure for directing fluid flow either into or exterior of the heat exchanger core assembly.

Abstract: A side sheet of a radiator has a thermal expansion joint to allow thermal relief in the radiator as the radiator expands due to temperature variations during operation. The thermal expansion joint is formed by first brazing the side sheet to the radiator core and then cutting through the side sheet.

Abstract: An end cover for protecting heat exchanger tubing of a condenser or an evaporator. The end cover comprises a cover support and a series of flanges extending from the cover support. The flanges are connected so that they can be bent relative to one another and the cover support in order to extend over and protect one end of the heat exchanger tubing. Similar end covers are provided for each end of the heat exchanger tubing.

Abstract: A heat exchanger for a vehicle. The heat exchanger includes a tank which has a peripheral foot that is in contact with a seal within a channel of a header. The header is coupled to the tank by a plurality of bendable tabs on the header that are bent onto an upper surface of the peripheral foot. A compression stop located on the external surface of the tank prevents distortion and excessive compression of the seal during the bending operation.

Abstract: A high efficiency modular OLF heat exchanger with heat transfer enhancement is disclosed. The OLF heat exchanger has an oblique louver fin provided with oblique strips. The oblique louver fin thus effectively forms transverse and longitudinal vortexes in a main gas flow while breaking the boundary layer of the gas flow, thus having an improved heat transferring effect. In the OLF heat exchanger, a plurality of flat tubes are assembled with two opposite header pipes, thus forming a module. The OLF heat exchanger is thus manufactured while easily permitting changes in its size and heat exchanging capacity by assembling a selected number of modules into a single body using a plurality of header pipe sockets. The oblique strips violently mix the gas flow and thereby further improve the heat transferring effect of the louver fin. The oblique louver fin thus has advantages expected from typical louver fins with swirlers and typical offset strip fins with swirlers.

Abstract: A heat exchanger is disclosed which is designed to be fabricated from sheet material. The heat exchanger core assembly comprises a plurality of stacked substantially identical strips of formed sheet members each having a plurality of troughs formed therein. The troughs are positioned in nested relationship so as to define fluid flowpaths through the core assembly and between headers secured to opposite ends of the core assembly. Each of the troughs includes a bottom portion having a plurality of openings therein through which fluid may flow. In one embodiment the openings are in the form of louvers. In another embodiment, the openings are rectangularly shaped and offset between successive strips in the stack so as to impart a mixing action to the fluid flowing through the core. Heat radiating fin portions separate the respective fluid flowpath defining troughs and may include louvered-like openings therein. A method of fabricating the heat exchanger is also disclosed.

Abstract: A heat exchanger is provided with a mounting means for fastening an accessory to the heat exchanger. The heat exchanger comprises a set of parallel flat tubes, and a set of cooling fins lying generally at right angles to the planes of the flat tubes and being inserted between two parallel flat tubes. The tubes and the cooling fins are arranged alternately with each other. At least one of the tubes is replaced by a mounting plate having at least one fastening lug projecting from a side edge of the mounting plate. The accessory is attached to the heat exchanger through the fastening lug.

Abstract: A method for mounting a cooling assembly for use in a motor vehicle, with the cooling system including a radiator assembly, a charge air cooler, and a condenser. The radiator assembly is mounted to a chassis of the motor vehicle, the charge air cooler is mounted to the radiator assembly, and the condenser is mounted to the charge air cooler so as to dispose the radiator assembly, charge air cooler and condenser in series flow relationship with one another. The radiator assembly includes a frame having two generally U-shaped portions, and a radiator, or heat exchanger, disposed within and mounted to the frame. A first lateral end portion of the radiator is rigidly attached to one of the U-shaped portions of the frame. The opposite lateral end portion of the radiator is resiliently mounted to the other U-shaped portion of the frame, which is accomplished by coupling a pair of leaf springs to the radiator and the frame.

Abstract: To provide a heat exchanger capable of installing the side plate to the header pipe accurately without improper joining and errors respectively is disclosed. In a heat exchanger in which both end portions of the side plate are inserted into end portions of a pair of header pipes respectively, a large number of tubes are provided between the header pipes between the side plates, and fins are provided between the large number of tubes, a pair of pawls for pinching the header pipe wall therebetween are provided on both sides of both end portions of the side plates respectively so that the pair of pawls regulate the angle of installation and the insertion position of the side plate to the header pipe. This enables the side plate to be accurately installed to the header pipes in a state free from improper joining and errors, and the header pipes are accurately positioned, thus eliminating any possibility of causing obstruction to piping or the like.

Abstract: An aluminum heat exchanger includes laminated aluminum tubes and corrugated fins, a core portion receiving respective ends of tubes into sheet metals members, and iron or stainless steel inserts having high strength receiving U-shaped folded pieces of the sheet metal members contacting the corrugated fins at the outermost portion of the core portion. The tubes and the corrugated fins are held and pressed from both sides of the core portion by the inserts and the corrugated fins are protected from coming apart during a brazing operation.

Abstract: In a heat exchanger according to the present invention, a projecting edge portion integrally projects outward from an opening edge portion of a tank body, and a tank and a core plate are connected to each other in such a way that a claw portion of an edge portion of the core plate is caulked by being folded toward a back of the projecting edge portion, and the back of the projecting edge portion at the opening edge portion of the tank body and an outside surface of the tank body are continuously connected to each other by a curved surface. Accordingly, stress dispersedly acts on the connection portion between the tank and the core plate so that local stress concentration is prevented and breakage is prevented.

Abstract: A first cooling fin and a second cooing fin are separated to have a predetermine clearance, and a plurality of connecting portions for partly connecting the first and second cooling fins are formed. When the first and second cooling fins are unfolded, the length E of each the connecting portion in parallel with the longitudinal direction of the first and second cooling fins is equal to 5% or less of the length F between the adjacent connecting portions. Further, the first cooling fin is projected from the condenser tube toward the radiator tube side with a projection length Lc being in a range of 1.7 to 7.0 mm.

Abstract: An improved end tank-to-header joint is disclosed. An end tank is formed with a flange portion that has at least one groove therein. A gasket having a predetermined cross-sectional shape is provided with at least one tongue portion that is adapted to engage the groove in an interference fit, thereby integrating the gasket with the end tank. A header is crimped to form a channel. The channel has a shape the corresponds to the shape of the gasket, such that the gasket is fully seated within the channel. A distal end of the header is then crimped around the flange of the end tank to ensure a fluid-tight seal at the joint.

Abstract: A heat exchanger includes a pair of header pipes, each having an end closed by a header cap; a plurality of heat transfer tubes interconnecting the header pipes; a plurality of fins; a side fin disposed on the outer surface of at least one of the outermost heat transfer tubes; and a side plate disposed on the outer surface of the side fin. The header cap comprises a header pipe connecting portion and a portion extending toward the side fin and side plate and having a concave portion engaged with the side fin and side plate. The header pipe and the side fin and side plate are connected to each other by the header cap; in particular, by the extended portion of the header cap, when assembled and brazed. The rotational shifting of the header pipe and the positional shifting of the side fin and side plate in the brazing process are prevented by the structure of the header cap.

Abstract: A multi-row heat exchanger includes tube holding devices positioned at the ends of the rows of heat exchange elements in the multi-row heat exchanger. One of the tube holding devices is fixedly secured to the tubes of each row of heat exchange elements. The other tube holding device is secured to the tubes of only one row of heat exchange elements. The latter tube holding device includes a slotted opening for receiving unsecured ends of the tubes in the other row of heat exchange elements. A process for forming the above multi-row heat exchanger is also disclosed.

Abstract: A heat exchanger includes a side support which has a thermal stress relieving zone in the form of a gap which completely separates one end of the support from the other. The gap is generally symmetrical about a central axis parallel to the longitudinal axes of the side supports of the heat exchanger and is shaped such that a straight line cannot be drawn through the gap from one side of the side support to the other side.

Abstract: A heater core mounting structure 20 for mounting any one of multiple stacked-plate heater cores 3A of different thickness in a heater case 2 without modification of the heater case 2 comprises a spacer 21 provided with engagement portions 26 configured to engage end portions 5A of the heater core 3A. The heating core mounting structure 20 enables mounting of different sized heater cores 3A at low cost, prevents shift of the stacked plates 5 during mounting, and protects the stacked end portions 5A.

Abstract: A heat exchanger includes a tank and a base plate, and each of the tank and the base plate is formed in a box shape having a U-shaped cross-section. The tank is connected to the base plate to close an end portion of an opening side of the tank using the base plate. Protrusion portions are provided inside a folded portion of the base plate in a lateral direction to be opposite to connection portions of first and second folded portions of the tank. Further, ribs are provided in the folded portion of the base plate in the lateral direction to increase stiffness of the base plate in a longitudinal direction thereof. Thus, connection portions of the tank and the base plate can be securely brazed.

Abstract: A heat exchanger for an automotive vehicle is disclosed including a frame having a pair of headers and a pair of side supports disposed between the headers at opposite ends thereof. Each of the side supports includes a generally planar base and a pair of flanges extending from the based portion. The side supports including a stress relieving-zone defined by a Z-shaped aperture disposed in the base portion.

Abstract: A heat exchanger has a plurality of flat tubes which alternate with fins, and the tubes and the fins are disposed one on another. Both ends of each tube are connected to a pair of right-hand and left-hand headers, in fluid communication with them. The headers have their ends closed with caps, and each cap has a pin integral with it so as to hold in place a bracket which is used to mount the heat exchanger on a structural base. The integral pins protrude upwards or downwards from the caps.

Abstract: Disclosed is a heat exchanger for an indoor unit of an air conditioner being easier to make and having an improved efficiency of heat exchange by enlarging an area of the heat exchanger, which makes contact with air in a room. The heat exchanger for the indoor unit of the air conditioner comprises a first fin assembly for absorbing a heat from air in a room, a second fin assembly which is adjacent to an upper portion of the first fin assembly and spaced by a predetermined distance with respect to the first fin assembly, for absorbing a heat from air in the room, a plurality of refrigerant pipes which extend through the first fin assembly and the second fin assembly, for supplying a pathway for refrigerant, and a connecting member for connecting the first fin assembly and the second fin assembly with each other so that the second fin assembly is secured to the first fin assembly.

Abstract: A heat exchanger comprises a condenser in which the lateral cheeks serving for the attachment of the condenser are replaced by the end tubes of the array, which open into the collectors beyond end partitions therein so as to be separated from the circulation of the liquid coolant. In this way, the particular parts formed by the cheeks and the positioning operation thereof are omitted.

Abstract: A fin-tube block for a heat exchanger and method of making same are disclosed. The thermal stress on fin-tube blocks of charge air coolers is considerable in the vicinity of the side parts, which can be attributed among other things to the rapid heating of the fin-shaped corrugated ribs and the comparatively slow warming of the side parts. The outermost corrugated rib layer abutting the side parts, opposite to the charge air flow, is displaced forward over the intake edge of the fin-tube block into the intake area for the charge air formed in the side parts and water tanks. In this way, more rapid heating of the side parts can be achieved.

Abstract: A brazed engine cooling radiator for a motor vehicle comprises a row of flat tubes arranged in a bundle alternately with cooling fins, with a structural member extending along one end of the bundle. A support member, for carrying an accessory, is in the form of a saddle which straddles the structural member. The back portion of the saddle has press formed tongues which co-operate with ribs of the structural member so as to guide the support member longitudinally. The side edges of the support member have teeth which are upset under the structural member so as to immobilise the latter. The teeth deform portions of the endmost cooling fin that lies between the base of the structural member and the adjacent tube. This support member is less costly to make and fit. It is fitted by seaming after the radiator has been brazed.

Abstract: A fixing lug provided on a fluid chamber of the heat exchanger has an elongate opening along which there is able to slide a bolt ensuring the clamping of the lug on a receiving lug. This sliding enables the heat exchanger to expand without mechanical stress.

Abstract: A heat exchanger of a plate construction, as used, for example, in a water-cooled charge air cooler with air-side lamella plates avoids undesirable thermal expansion effects which occur in the transient operation of a charge air cooler and result in damage. The otherwise completely hard-soldered cooler block is divided along a plane parallel to the plate planes into two or more partial blocks. When the partial blocks are combined at a mutual distance to form a cooler block assembly, each partial block receives a clearance in the transverse direction which compensates the thermally caused transverse expansions of the individual blocks.

Abstract: A heat exchanger has a header plate which comprises a substantially flat base wall, which defines over at least part of its periphery a recess for receiving a claw element of a header cover. This recess is bounded on one side by projections formed on an inner face of the base wall, and on another side by a bent-back edge portion, from which retaining lugs extend. These retaining lugs are bent back to secure the header cover in position. The invention is applicable to heat exchangers for motor vehicles.

Abstract: A heat exchanger comprises a cooling frame including first and second frame portions that releasably engage fin material. In one embodiment of the heat exchanger, first and second frame portions are movable with respect to each other. A fin module, which can include fragile or pliant fin material secured to a more robust strip of material, is positionable between the first and second frame portions. A tension device, such as a spring or a spacing controller, urges the frame portions together to bind the fin module between the frame portions. Releasing tension or urging the frame portions in an opposite direction releases the fin module. The fin module can also be retained within the cooling frame with one or more clips.

Abstract: A clip for securing a manifold tube to an automotive heat exchanger has a portion which secures to a support plate of the heat exchanger without brazing. The base of the clip has a lip which inserts over an edge of the plate. A loop joins the base and extends around the tube. A leg joins the other end of the loop and has a lip which is inserted over an opposite edge of the plate. A fastener secures the first and second ends of the loop to each other to grip the tube and hold the lips in gripping engagement with the edges of the plate.

Abstract: Heater coils usually intended primarily for the handling of low pressure heating fluid such as hot water from an engine cooling system are converted to use with elevated pressure hydraulic fluid by tying the inlet and outlet of said coil together with a sturdy structural frame, usually in the form of a plate provided with threaded fittings on one side for connection to hydraulic lines and having the ends of the tubing secured by brazing or other hot metal fusion welding to the rear of the reinforcing plate in alignment with the orifices through the plate. The plate also serves as a safety shield in case of failure of the radiator coils or connections and can also be advantageously applied to radiator coils formed especially for hydraulic heating coils.

Abstract: A heat exchanger reduces a production of scrap portions and does not use a claw bending process at a time of forming a tank and a base plate. Each of the tank and the base plate is formed in a box shape having a U-shaped cross-section. The tank is joined to the base plate to close an end portion of an opening side of the tank using the base plate. A tube is inserted into a hole made at the base plate and fixed thereat in such a manner that the tube communicates with an inside of the tank. Each of the tank and the base plate is formed by folding an unfolded metal plate in which the box shape having the U-shaped cross section is in an unfolded state and joining a folded portion of the unfolded metal plate by brazing. According to the above configuration, the tank and the base plate can be structured by folding unfolded plates and by connecting the folded portions.