Abstract: A sealing junction (47) for a heat exchanger (40) includes a rounded foot (50) at the lower end of a tank (46) positioned in a channel (52) a the periphery of a header end plate section (54). The channel includes a rounded flange (56) that has rounded tabs (48) smoothly and continuously extending therefrom that clinch the foot (50).

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 thermal stress relieving zone defined by an elliptical aperture disposed in the based portion.

Abstract: A heat exchanger comprises a plurality of flat tubes, a pair of hollow headers connected to both ends of each of the flat tubes in fluid communication with them, and at least one fastener secured to the headers. The fastener comprises at least one self-retainable embracing portion capable of resiliently engaging the exterior of the header to keep the fastener in place prior to brazing the components of the exchanger together. The fastener can be temporarily connected, without the aid of any special tools, on a heat exchanger body before brazing with a "one-shot" procedure, thus rendering easy the manufacture of the heat exchanger. Since special tools are unnecessary, a greater number of temporarily assembled heat exchangers can be accommodated in one oven, thus improving, to a remarkable degree, the productivity in manufacture of the heat exchanger.

Abstract: An air cooled heat exchanger is comprised of a plurality of generally parallel fluid carrying tubes joined at the ends so as to form a refrigerant circuit which is free floating with respect to its means of support. The fluid carrying tubes are directly connected to heat transfer fins running generally perpendicular to the tubes. The fins in turn are connected to non-fluid carrying support tubes which are generally parallel to the fluid carrying tubes. The support tubes are secured at their ends to end plates and as necessary to a center plate or plates. There is no direct contact between the end plates or center plates and the fluid carrying tubes, which are free to move with respect to the end plates and center plate or plates. Therefore, damage to the fluid carrying tubes and leakage which often occurs at the connection between a fluid carrying tube and a support plate due to abrasion caused by vibration and temperature changes is eliminated.

Abstract: A modular cooler having a plurality of units which can be interconnected in a leak proof manner yet providing fluid flow therebetween. The cooler can be an oil or transmission fluid cooler and any suitable number of units and any suitable number of units may be stacked. Thus, a single unit can be used in conjunction with like units to provide any desired degree of cooling.

Abstract: An assembly for mounting an automotive condenser to a radiator includes a lower boss having a pair of resilient compression fingers integrally molded on each of the radiator end tanks. An upper boss is also provided. A strip bracket is vertically mounted to the condenser end tanks to mate with the bosses. A mounting blade is defined by a depending wing hook on the bracket mating snugly within the grip of the compression fingers of the lower boss to form an adjustable slip mount. The depending hook projects out and extends downwardly at substantially 90.degree. to captively engage the outer edges of the compression fingers, thus firmly securing the lower portion of the condenser to the radiator. A screw fastener is inserted through a wing tab mating with the upper boss and secured to a J-nut that is clipped to a support plate of the upper boss to complete the assembly.

Abstract: An air/liquid heat exchanger having a tube that reinforces the heat exchanger's core and header plates and also sprays a liquid onto the core for evaporative cooling.

Abstract: A manifold assembly for use with heat exchangers comprises a unitary tank having a semicircular cross-section and a unitary header plate which also has a semi-circular cross-section, the outer diameter of the tank being substantially equal to the inner diameter of the header plate to allow the tank to be inserted into the header plate. A plurality of transverse tube holes are formed through the header plate along its longitudinal center line for receiving the tubes of the condenser or evaporator. A flange or lip is formed around the tube holes to provide both a tube lead-in and a joint filleting pocket. A plurality of opposed transverse slots are formed through the tank and header plate along their longitudinal center lines to receive baffles therein for locking the tank and header plate together during assembly and for adjusting the flow pattern during use. The baffles are configured to engage the inner walls and sides of the slots.

Abstract: A heat exchanger comprises a fluid box in the form of an elongated vessel having two side walls, two end walls and a base wall, the fluid box being sealingly closed by a welded cover plate on the side opposite to the base wall. The heat exchanger also has at least one bank of tubes which lie mainly outside the fluid box and which communicate sealingly with the interior of the latter through holes formed in the base wall. The side walls of the fluid box extend generally parallel to the plane containing the axes of the tubes of one bank, and include in the vicinity of the cover plate a shoulder which is directed outwardly to serve as a support for welding the cover plate in position. The distance, measured in a transverse direction, between the inner face of each side wall of the fluid box and the axes of the tubes of the bank of tubes closest to it is, at the level of the shoulder smaller than the maximum dimension of the tubes in the same transverse direction.

Abstract: A plastic radiator tank for heat exchangers of internal-combustion engines, particularly for radiators of commercial vehicles, having at least one connection tube for a heat exchange medium. The connection tube has an interior wall and includes a reinforcement on the interior wall. The reinforcement comprises webs which project toward the inside of the connection tube from the interior wall.

Abstract: A heat exchanger includes a heat exchanger body and fasteners used to mount the body on an automobile or the like. The heat exchanger body comprises flat tubes and fin members alternatingly stacked on each other and a pair of hollow headers, with the ends of each tube being connected in fluid communication with the headers. Each fastener comprises a contacting concave portion with a shape which allows it to fit on an outer peripheral surface of a header, a hooking portion protruding from an end of the concave portion, and a fastening portion extending outwardly from another end of the concave portion. The concave portion is placed in close contact with the peripheral surface of the header, with a hook end of the hooking portion being inserted in between two adjacent tubes. The fasteners are soldered to the heat exchanger body and become integral with it.

Abstract: A heat exchanger assembly has a pair of spaced extruded tanks and a tube and header subassembly including a pair of header plates on opposite ends of a plurality of spaced parallel tubes. The extruded tanks include stop surfaces thereon for locating the subassembly within the extruded tanks and the extruded tanks further include a pair of seal ribs and a pair of deformable side flanges defining a pocket for receiving flux material to secure the subassembly to the extruded tanks without exposing the flux material to the interior of the extruded tanks.

Abstract: A lightweight high efficiency radiator core having a plurality of cylindrical metal tubes, and a plurality of fins with fin openings and fin collars fitting around the tubes in tight metal-to-metal contact, header plates having openings with collars, and grommets located in said header plate openings and fitting around the collars, the tubes being force-fitted through the grommets, and a method of assembling such a radiator core, by means of passing tubes through the fin collars, and thereafter expanding the tubes into tight metal-to-metal contact with the collars, inserting grommets in the header plates, and thereafter force-fitting the ends of the tubes through the grommets.

Abstract: A radiator mounting system for connecting a radiator to an engine having hose sizes and having hose attachment locations not designed for that radiator. Four radiator hose ports of a special radiator housing hereof are each provided with identical adjacent bolt holes for selectively attaching, across any one hose port, either a blocking plate or a hose-receiving-neck, each selected to fit an engine hose. A radiator support has columns attached to a radiator housing in an adjustable manner for vertical positioning of the radiator with respect to the engine fan. The mounting system and radiator provide a pre-constructed product with built-in vibratory protection for the radiation coils.

Abstract: An air cooled heat exchanger is comprised of a plurality of generally parallel fluid carrying tubes joined at the ends so as to form a refrigerant circuit which is free floating with respect to its means of support. The fluid carrying tubes are directly connected to heat transfer fins running generally perpendicular to the tubes. The fins in turn are connected to non-fluid carrying support tubes which are generally parallel to the fluid carrying tubes. The support tubes are secured at their ends to end plates and as necessary to a center plate or plates. There is no direct contact between the end plates or center plates and the fluid carrying tubes, which are free to move with respect to the end plates and center plate or plates. Therefore, damage to the fluid carrying tubes and leakage which often occurs at the connection between a fluid carrying tube and a support plate due to abrasion caused by vibration and temperature changes is eliminated.

Abstract: A heat exchanger core as prepared for handling and heat bonding has a pair of headers, a row of oval shaped fluid carrying tubes received at opposite ends in the headers, air centers interleaved with the tubes, oval shaped reinforcement tubes sandwiching the fluid carrying tubes and air centers, and processing straps wrapped about the core clamping the fluid carrying tubes and air centers together between the reinforcement tubes.

Abstract: The present invention relates to a method of manufacturing a heat exchanger comprising a bundle which consists of a plurality of tubes, a plurality of fins alternating with the tubes, at least one terminal end beam extending parallel to the tubes, and at least one collector plate at the end of the bundle. Clamping means are arranged in the vicinity of the collector plate, and in line with deformable means which are provided on projecting portions of the end beam or end beams.The invention is especially applicable to a heat exchanger for use in automotive vehicles.

Abstract: This invention is to an improved method for reducing crevice corrosion in assembly joints of aluminum fluid handling devices, the improvement comprising, providing a series of spaced ribs at the assembly joint configured to intermittently resist engagement of components along an elongated assembly crevice sufficient to segment the crevice into a plurality of minor assembly crevices dimensioned to permit substantial mixing of fluid within the minor crevices with fluid being handled by the device. The invention has particular utility in automotive heat exchangers wherein crevices at joints where polymeric tanks are assembled to aluminum metal headers are susceptible to crevice corrsion.

Abstract: So-called suck-in (FIG. 6) and banana-ing (FIG. 7) in a plastic tank for a vehicular radiator having elongated side walls 102, 104 connected by short end walls 106, 108 and having an opening 112 surrounded by a peripheral flange 114 which in turn includes a planar sealing surface 124 is eliminated by the provision of a substantially continuous, peripheral bead 140 about the tank generally parallel to the flange 114 and in close adjacency thereto.

Abstract: A heat exchanger is provided in which two header tanks (11,12) are structurally connected together by two spaced apart casing members (15,16) therebeing a number of fluid conduits (13) to provide a fluid transfer connection therebetween. Each of the header tanks (11,12) includes a plate member (18) a side wall member (19) which defines in combination with the plate member (18) a fluid manifold each end of which is closed by a respective end cap (20A,20B,21A,21B). Each of the end caps (20A, 20B,21A,21B) includes means (25) used during assembly as an assembly aid. A further feature of the invention is the use of extruded material for several of the structural components.

Abstract: The joint between the tank and header of a heat exchanger comprises a channel formed in the header having an inner wall and a bottom, and a rim or foot on the mating edge of the tank. The space between the foot and the channel bottom and inner wall contains an elastomer gasket which is shaped to allow low assembly forces to deform the gasket and fill the space between the tank foot and header pocket, even when high hardness gasket material is used. The gasket includes an enlarged rib, like an O-ring, between the tank foot and header and an integral web portion extending from the rib into the space between the inner wall and the foot to fill and seal that area as well as the area at the bottom of the foot.

Abstract: The invention relates to a heat exchanger, particularly for motor vehicles, including at least one water tank disposed at one end of a bank (6) of tubes (8) with fines (7) through which a first fluid flows and a shell (2), such as a casing (9), defined by walls (12, 13, 14, 15) surrounding said bank and through which a second fluid flows. In this exchanger, two sides of the bank are adjacent to walls (12, 13, 14, 15) of the casing (9) braced against one another by assembly means positioning the bank (6) and supported by it. This exchanger is characterized in that the assembly means comprise mutual sliding engagement means (21, 23, 25, 26, 34) supported respectively in part by the bank (6) and by at least one of the walls (12, 13, 14, 15) of the casing (9). The invention relates in particular to motor vehicles.

Abstract: A radiator and shroud assembly including a generally planar radiator core 10 having a plurality of generally parallel tubes 12 interconnected by fins 14 with opposed ends defined by tanks 16 and joined by spaced sides 18 which are generally parallel to the tubes 12. Each of the sides 18 has at least one fastener receiving aperture 26 and mounting brackets 30, 32 abuts the side pieces 18 and have a truss-like configuration which is made fluid impervious by thin web 84. Fasteners 42 extend through core apertures 26 and aligned apertures 40 in the brackets 30, 32 to secure the brackets 30, 32 in essentially nominally sealed relation to the core 10. A fan shroud 50 is similarly mounted to the brackets 30, 32.

Abstract: A radiator core has header plates provided with resilient grommets grooved to receive the edges of the header plates. Circular tubes extend between the header plates and pass through central bores in the grommets which press inwardly thereon. Fins extend transversely to the tubes which extend through collars in the fins.

Abstract: The heat exchanger comprises tubes engaged into fins and tube plates connected to header boxes. The header boxes form on their smaller sides stirrups between the legs of which are defined inner edges on which are crimped the ends of platens formed by the tube plates. Moreover, the lugs of the side flanges are bent over on the sides of the stirrups.

Abstract: The reinforcements in a radiator core assembly are perforated so as to form a shear zone in the legs thereof that maintain rigidity in the reinforcements for stacking and brazing and can be readily sheared thereafter.

Abstract: The invention relates to a heat exchanger including a bundle of tubes in which the ends of the tubes (32) in the bundle (30) are sealed in the holes through a perforated plate (36) to which a water box (42) is fixed. The water box and perforated plate assembly includes means (44) co-operating with the sides of the fins (34) of the tubes (32) to oppose displacement of the bundle relative to the perforated plate by pivoting or by torsion. The invention is particularly applicable to heat exchangers for motor vehicles.

Abstract: An air conditioner evaporator system that is interchangeable with existing automotive systems, and yet has substantial other uses, that employs an expandable liquid/gas media, such as freon, that is injected into a unique staggered coil arrangement, whereby the expanding gas travels through limited predetermined cycles only, before returning to the compressor for condensation and recycling; and wherein the exposed ends of the coils are insulated in a very facile way to preserve the refrigerating capability of the freon gas within the interior of the coils and simultaneously prevent sweating (condensation) on the exterior surface of the coils.

Abstract: A water/air cooler is provided for water cooled internal combustion engines, especially for use in vehicles, which is constructed out of a cooler block held between water tanks and lateral parts. The lateral parts are connected with the water tanks by means of laterally overextending and gripping fastening brackets. These fastening brackets exhibit openings for engaging protruding connecting bolts on the water tanks. The brackets are affixed to the connecting bolts either through spring clamps or through corresponding protrusions having elastic clamping devices themselves. This water/air cooler is very easily assembled and is especially adapted for systems wherein the water tanks are manufactured out of plastic material.

Abstract: An extrusion tube and fin heat exchanger includes two end plates and two tank caps. A plurality of parallel extrusion tubes is disposed between the plates and through the tank caps. A plurality of fins formed of aluminum sheet, folded back and forth, is disposed between the tubes and about the extrusions. A tank cover is sealed over the tank cap at each end. The parts are assembled by a vibration method.

Abstract: An improved frame assembly for holding radiator heat exchanger core units required for cooling engines such as the locomotive engine. There are specially designed side frames on each side of the cooling core with special push-pad units between the side rail and the core. The push-pads include fixed sections which are fixed with respect to the side frame and movable sections which are movable therewith to provide for unequal expansion of the side frame and the core.

Abstract: A connection for securing a tank to a header plate in a heat exchanger. A metal header plate is provided with a peripheral groove having a bottom wall and an upstanding side wall. A compressible gasket is received in the groove in a plastic tank as a flange disposed in the groove to compress the gasket. A plurality of tabs are deformed from the side wall to overlie a side of the flange and the side wall bent toward the tank. The tabs are generally egg-shaped or spherical and have free edges engaging the flange to provide excellent resistance to deformation.

Abstract: A side sealing device comprises a plate (22) which covers one side (18) of the tube bundle constituting the heat exchanger. It is snap-fitted to the bundle by suitable end tabs (32) for engaging the ends of the tubes of like projections. The invention is particularly applicable to heat exchangers for motor vehicles.

Abstract: The invention concerns a heat exchanger comprising a heat exchanger block having a plurality of tubes and fins arranged transversely to the tubes, at least one tube plate and a water tank, both made of a synthetic plastic material. The tube plate has orifices to receive the ends of the tubes and the water tank is fastened in a water tight manner to the tube plate. In order to obtain a simple and reliable joint of the heat exchanger tubes with the tube plate and the water tank with the tube plate, the plastic tube plate is provided on one side with projections. The orifices are located in these projections and the ends of the tubes are mounted in these orifices by expansion in the radial direction or impression in the axial direction. Both the tube plate and the water tank are equipped with flat surfaces at their edges. These surfaces rest on each other and the tube plate is joined with the water tank by vibration welding on these surfaces.

Abstract: An improved radiator assembly (10) that functions as a crossflow heat exchanger for use on liquid cooled engines. The assembly (10) uses fewer parts than conventional radiators and features a core assembly (11) comprised of a single vertical-row plurality of horizontally or vertically and alternately stacked radiator fins (11a) and radiator tubes (11b). With this core-stack design all the heat exchanging elements are located in a single frontal plane with the ram air applied normal to the plane. The radiator fin design also employs more fins-per-inch than conventional designs. Therefore, allowing a greater fin-to-tube contact which, in turn, provides a more effective heat transfer surface. The core stack is held under compression by inserting the ends of the radiator tubes (11b) into corresonding apertures located on the inward side of a cylindrical seamless outlet reservoir (10) and inlet reservoir (15).

Abstract: There is disclosed herein a radiator wherein grooves formed in a tank flange and in a header match each other and a mound formed on an associated clamping strip. Tapered edges formed on locking tabs cut in the tank flange cooperate with a sloped surface on the clamping strip when bent inwardly to urge the clamping strip and header toward the tank flange so as to compress a sealing gasket between the header and tank flange grooves, eliminating the need for solder.

Abstract: A solderless type automotive engine radiator has upper and lower tanks and a heat exchanger core connected at the upper and lower ends to the tanks through upper and lower header plates. The core is formed by tubes and fins secured to the tubes without soldering. The upper and lower ends of the tubes are in gripping engagement with inner peripheral surfaces of holes formed in the header plates. Layers of adhesive are formed on the surfaces of the header plates adjacent to the core to form liquid-tight seals between the header plates and the tubes. The adhesive layers and the fins are arranged such that at least the fin nearest to an adjacent adhesive layer is either in face-to-face engagement with the adjacent adhesive layer or embedded in the adjacent adhesive layer to strengthen the adhesive layer and protect the same against foreign materials such as water and dirt whereby the durability of the seals is improved.

Abstract: A sealed joint between a basin (21) and a plate (43) as in the construction of a heat exchanger tank. The basin has a rim with an outwardly directed flange (23), and the plate has a rim including a U-shaped channel (42) to receive the flange together with a gasket (65). The gasket comprises at least a fillet which is suitable for being elastically deformed by being compressed between the flange and the channel to fill the space therebetween. The portion (100) of the fillet which faces the flanges is narrower than the portion (100') of the fillet which faces the channel by virtue of at least one setback (104) in the fillet between said portions thereof.

Abstract: A radiator arrangement for water cooled combustion engines is disclosed, especially for use with commercial vehicles. The radiator cooling block, including the water boxes, are fastened at the vehicle frame by means of lateral support parts. The lateral support parts are provided with lateral mounting flanges which respectively extend over both ends of the water boxes and exhibit bores which are aligned with corresponding bores at the water boxes, whereby cotter pins or the like extending through the bores act as connecting pins to connect the parts together. This arrangement exhibits the advantage that the water boxes themselves are used as connecting traverse elements for the lateral support parts so that the lateral support parts and the water boxes form a stable frame construction which holds the soldered cooling block therebetween. Expensive soldered connections for the fastening of the lateral support parts is disposed with and the necessary reinforcing strength is formed by this frame construction.

Abstract: A sealing structure between at least one tube and a tube support plate having a hole for each tube to extend therethrough, characterized in that a ring member enclosing each tube with a space therefrom is secured to the tube support plate, a sand is filled in the space to form a cylindrical sand layer surrounding the tube, a means for preventing leakage of the sand is provided at each axial end of the sand layer.

Abstract: A heat exchanger such as a motor vehicle radiator of the tube 5 and corrugated fin 6 type has clamping members 7 to hold the fin and tube matrix together to resist outward pressure pulsations. The clamping members are located in position by means of arms 9 which are rigidly connected to the rim 8 of a tube plate into which the tubes 5 are connected, or to any other part of the respective header tank. Sliding movement is permitted between the arms 9 and clamping members 7, so that differential thermal expansion between the clamping members 7 and the tubes 5 which have liquid running through them is taken up by the relative movement of the arms 9 and the clamping members 7. Because the clamping members 7 are of uniform section, and are not directly shaped to be secured to the header tanks, lower tooling costs are possible.

Abstract: Disclosed is a heat exchanger, preferably for use in automotive vehicles, comprising a plurality of parallel tubes and a plurality of ribs extending the tubes, together with lateral parts fastened to the ends of the ribs. According to the invention, the lateral part consists of a strip applied against the ends of the ribs and joined with the ribs by means of an adhesive or by the embedding of the rib ends into the material of the strip. Also disclosed is a process for the manufacture of heat exchangers of this type.

Abstract: The case has a housing (15) with an open end from whose annular edge (16) there depends an annular projection (20) constituting an elastically deformable lip which presses against the tube plate (13) of the heat exchanger, thereby sealing the housing around the tube plate.

Abstract: A plate and fin type heat exchanger is provided with an improved mounting arrangement for mounting the heat exchanger, for example, within the intake manifold of a combustion engine for use as a charge air cooler. A plurality of threaded nuts are secured as by welding at predetermined points at the inboard sides of the heat exchanger side plates for receiving bolts passed through aligned bolt-receiving holes in the intake manifold and side plates to secure the heat exchanger in place, thereby providing a mounting arrangement permitting the heat exchanger to occupy substantially the entire cross-sectional area of the intake manifold for optimized heat transfer capacity.

Abstract: A radiator for motor vehicles is provided which has several tubes opening to respective upper and lower radiator tanks and arranged parallel to one another for the guidance of heat exchange fluid. Heat exchange fins are disposed perpendicularly to the tubes and are fixedly connected thereto. The fins exhibit respective cut-out openings forming a groove at at least one of the surfaces of the fin blocks, which groove expands toward the inside and serves for connecting lateral parts, which lateral parts grip with tabs into the groove formed by the cut-outs. Each lateral part is formed of two halves which are pivotally connected with one another along an axis running in the direction of the groove and which are provided with tabs which extend outwardly over the lateral edges of the halves into the groove and abut the fins on the lateral walls of the groove. To form a rigid or stiff connection between the lateral part halves after their installation in the groove, locking or closing elements are provided.

Abstract: A casing (10) for receiving a heat exchanger (12) such as a heater or an air conditioner for a motor vehicle, has an opening surrounded by a rim (13). The heat exchanger is inserted into the casing via the opening. To fasten the heat exchanger therein, resilient lugs (18) having inwardly turned latches (21) project longitudinally from the rim. The lugs snap fasten onto a peripheral flange (16) around the water box (17) of the heat exchanger. Assembly is simplified and speeded by the arrangement, thereby reducing its cost.

Abstract: A heat exchanger of this invention used as a radiator for an automotive vehicle has a core plate having a holding groove around its periphery for receiving a seal member as well as a flange of a tank member, wherein a concave-convex portion is formed in the outer surface of the outer or inner side wall forming the holding groove. According to this structure, an excess molten solder is gathered toward the concave-convex portion when the core plate is heated for soldering in a heat furnace. This prevents the excess solder from making a drop-shaped mass which has an adverse influence on a seal efficiency of the seal member.

Abstract: Apparatus and method for the assembly of an air conditioning unit including a tube sheet isolator. An electrically and thermally insulative isolator is provided for securing an aluminum heat exchanger to a steel component of the unit. The tube sheet isolators further serve to allow various subassemblies of the air conditioning unit to be slidably engaged to secure the components relative to one another.

Abstract: A support assembly and grill for a radiator includes a support frame which opens outwardly and upwardly to allow ready access to and removal of a radiator and is fixable to a vehicle frame. The radiator is protected from damage by a grill held in a spaced apart relation from the radiator by a guard frame. The grill and guard form a light easily removable modual assembly. The guard frame overlaps the support frame and is affixed thereto by a plurality of bolts.

Abstract: The radiator illustrated includes a core assembly with a headsheet, gasket and tank bolted on the top and bottom ends thereof, as well as side channels for the opposite sides thereof. A "horseshoe" shaped bracket is secured to the headsheet and tank at each corner of the radiator. Each pair of upper and lower brackets is adapted to having one of the side channels removably mounted thereon and is further adapted to permitting repair of any corner leaks without having to break the tank-to-headsheet sealed joint to remove the side channel therefrom.