Abstract: For high reliability through redundancy, in a thermal chamber, heat exchange tubes are configured in multiple parallel runs. Typically three tubes are attached side-by-side in a strip which is formed into folded-back horizontal rows to be built into or attached to the walls of the chamber. In a freezer, each tube can serve independently as an evaporator when connected to a compressor/condenser source. Versatile source interfacing is provided by two valve-manifold routing units, one at each end of the multi-tube strip, enabling easy tube substitution in case of failure, as well as facilitating source-swapping, networking, defrosting and refrigerant operations such as purging, flushing, replenishing, changing or replacement, all without interrupting the required cooling process or affecting the chamber temperature.

Abstract: A header for use in heat exchanger includes a base wall (20) with a plurality of tube insertion apertures (23), an opposite wall (30) opposed to the base wall (20), a pair of side walls (40a and 40b) disposed at both lateral sides of the base wall (20) and the opposite wall (30) and connecting the lateral sides and are inforcing walls (50a and 50b) disposed betwwen the base wall (20) and the opposite wall (30) along a longitudinal direction thereof and connecting the base wall (20) with the opposite wall (30). The side walls (40a and 40b) are integrally formed at both lateral sides of the base wall (20) be bending processing. A first half (30a) of the opposite wall (30) is integrally formed at a side of one of the side walls (40a) by bending processing, and a second half (30b) of the opposite wall (30) is integrally formed at a side of the other of the side walls (40b) by bending processing.

Abstract: The invention concerns a louvered fin comprising an assembly of wave stems (123) alternately linked by a wave crest (121) and a wave base (122), and wherein the wave stems (123) are provided with flaps (125) cut out in said wave stems (123) and sloping at angle relative to the main undulating direction (D1). The wave stems (123), crests (121) and bases (122) form, in cross-section relative to the main undulating direction (D1), rectilinear segments, the crests and the bases being mutually parallel.

Abstract: A manifold for a heat exchanger comprising a tank, a plurality of tubes arranged to receive fluid therein, a plurality of fins for interspacing the tubes, the fins extending along the length of the tubes to thereby define a core section, wherein the header section is formed with multi-point brazing interfaces for securing said header and said core section during a brazing process. One embodiment provides at least one doubled wall area in close proximity to the tube slot areas to form a structure of increased strength, permitting the material to be reduced in relative thickness. The manifold may be formed from flat sheet stock by extended side walls of the header portion joined by a separate cap to close a top portion of the manifold assembly for the purpose of collecting fluid to and from the tubes and said at least one inlet and outlet.

Abstract: A heat exchanger including a first header having an inlet therein, a second header, an outlet in one of the first and second headers, and a plurality of flat tubes extending between the first and second headers for carrying a fluid between the first and second headers. A first connector is also provided for connecting a first exterior line to one of the first and second headers, the first connector being proximate and substantially parallel to an end of one of the flat tubes. In a compact cooling system, such heat exchangers may be disposed about a radial fan directing air flow outwardly away from the fan axis. One of a system inlet and a system outlet are connected via the first exterior lines to the first connectors of at least two of the heat exchangers.

Abstract: A heat exchanger assembly for a vehicle comprising at least one manifold having walls defining a chamber for retaining fluid. A mounting device is secured to the wall of the manifold. The mounting device includes a seat portion adapted to receive a fluid transmission line. The mounting device further includes an opening extending from the seat portion and aligned with an aperture in the manifold for providing a fluid passageway between the manifold and the fluid transmission line. In addition, the mounting device includes at least one indentation formed therein for capturing contaminates and preventing an intrusion of the contaminates into the seat portion.

Abstract: The invention relates to a method for forming at least one flat-tube insertion slot in a header tube. A sawcut is introduced into the header tube during a sawing step, and the slot is configured, during a subsequent punching step, by means of a slot punch, which punches into the region of the sawcut. A rimmed opening can be configured during the punching step by using a slot punch with a larger width and/or length relative to the sawcut. The sawcut is preferably introduced to a depth less that the wall thickness of the header tube. The respective web region(s) between chamber of a multi-chamber header tube can be compressed during the punching operation to a level lower than that of a header-tube wall region functioning as a flat-tube insertion stop, in order to form a chamber-connecting duct.

Abstract: A heat exchanger (10), such as a radiator, includes a metal tank (12) having a foot (28) that is integrally formed therewith. The heat exchanger (10) also includes a header (14) having a plurality of crimping tabs (44) extending therefrom. The integral foot (28) of the metal tank (12) has an upper surface (30) and a lower surface (32) with the lower surface (32) intended to rest within an internal channel (46) formed in the header (14). The crimping tabs (44) are folded around the footer (28) so as to lie above and generally parallel to the footer upper surface (30) in order to retain the metal tank (12) in proper alignment with the header (14). After the metal tank (12) and the header (14) are physically assembled, they are sealed to form a leak-free joint.

Abstract: The present invention is directed to a thermosyphon heat exchanger. The thermosyphon system eliminates the need for costly and inefficient moving parts in the cooling system. The system also minimizes failures rendering the system inoperable by eliminating mechanical components subject to breakdowns that would render the system inoperable. The design of the heat exchanger coils provides for increased efficiency, reduced cost, and simplified construction and maintenance. The system further reduces the energy consumption required for cooling operation while still providing excellent cooling performance.

Abstract: A heat exchanger including a core having a plurality of flat tubes with fins between adjacent tubes, the tubes each having flat side walls connected by front and rear walls defining a flow path, all of the walls extending longitudinally between opposite tube ends with the tube side walls defining a first height. First tube end portions in the tube ends of a plurality of the plurality of flat tubes include flat side walls flared apart to define a second height greater than the first height. Second tube end portions in the tube ends of the plurality of the plurality of flat tubes include a longitudinally extending cut through the front and rear walls with the flat side walls flared apart to define a third height greater than the second height. The side walls of adjacent tubes are secured together at the tube ends, and headers connect to the tube front and rear walls at the first and second tube end portions whereby the headers communicate with the tube flow paths.

Abstract: An apparatus is disclosed for supporting and sealing a heat exchanger unit. Specifically, a unitary header and tank unit is disclosed comprising a condenser header and tank unit arranged in parallel relation to a radiator header and tank unit. The unitary header and tank unit is formed from a single piece of stamped material. The single piece of material is stamped to include a perpendicular extrusion and two base portions, each base portion being perforated. The partial separation of the perpendicular extrusion into two flange portions allows the base portions to be folded over onto the flange portions thereby forming two header and tank units with a single internal partition. Additionally, a fin unit is disclosed that is capable of traversing the heat exchange fins of multiple heat exchangers.

Abstract: A heat exchanger in which dead zones and areas of stagnation are significantly minimized or eliminated. The heat exchanger includes at least one floating tubesheet which is movable in a longitudinal direction in response to tube expansion and contraction relative to the heat exchanger shell. The shell is joined to the ends by conical members which preferably join onto the shell at a distance along its length to provide shell extensions which promote better flow patterns in the regions of the tube ends. Tube erosion may be addressed by providing a sacrificial portion of tube length extending beyond the tube sheets so as to make repair and replacement of the eroded portion of tubes significantly cheaper, easier and with minimal process interruption. Because axial or longitudinal flow is employed with respect to the shell-side fluid, tube vibration problems are generally eliminated and fouling is minimized through the use of high fluid velocities.

Abstract: A heat exchanger for a CO2 refrigerant includes at least three rows of tube groups including a plurality of tubes having an independent refrigerant path, first and second header pipes including a header where a plurality of tube insertion holes into which the tubes are inserted are formed and a tank having partition walls formed along a direction of the flow of a refrigerant, wherein a plurality of return holes are formed in the partition walls, end caps sealing both end portions of the first and second header pipes, a coupling reinforcement portion installed at least one of the first and second header pipes and reinforcing a coupling force of the header and the tank, a refrigerant inlet pipe connected to the first or second header pipe through which the refrigerant enters, and a refrigerant outlet pipe connected to the first or second header pipe through which the refrigerant is exhausted.

Abstract: A condenser for vehicle air-conditioning systems, comprising a pair of parallel distributors (12) between which there is set a heat-exchange core (14) including a plurality of pipes (16) having a flat cross section, which are parallel to one another, and a plurality of undulated fins (18) set between each pair of adjacent pipes, in which a reinforcing element (22) is applied on at least one end side (20) of the heat-exchange core (14). The aforesaid reinforcing element (22) is fixed directly on an end pipe (16a) of the heat-exchange core (14).

Abstract: A method of providing volume production of highly pressure resistant headers (10), (12) is provided and allows the headers (10), (12) to be formed of a header structure (10), (12) with a relatively thin wall portion (32) and a relatively thick wall portion (30). A strip (40) is utilized to provide the desired thickness at the thin wall portion (32) while allowing both the thin wall portion (32) and the strip (40) to have tube slots (34), (42) formed therein by a one step punching operation.

Abstract: The present invention provides a method of at least one of increasing airflow around a plurality of tubes in a heat exchanger, and increasing the web in a header around such plurality of tubes, wherein the method includes the steps of providing a predetermined plurality of tubes having a predetermined end configuration, and a header having a predetermined number of openings. The predetermined number of openings are configured in a predetermined staggered array corresponding to the predetermined plurality of tubes, disposed in a heat exchanger. Finally, the method secures an end of each predetermined plurality of tubes into the predetermined number of openings in said header.

Abstract: A heat exchanger includes a header (2) and a plurality of tubes (1) connected thereto. The header (2) includes an inner peripheral wall portion (10) having a generally flattened arc-shaped cross-sectional shape to which the tubes (1) are connected, an outer peripheral wall portion (1) having a generally semi-circular cross-sectional shape which faces to the inner peripheral wall portion (10) and connecting curved peripheral wall portions (12) connecting the inner peripheral wall portion (10) and the outer peripheral wall portion (11). The parameters of the hollow header (2), such as a radius of external curvature Ra of the inner peripheral wall portion (10), a radius of external curvature Rb of the connecting curved peripheral wall portion (12), and a radius of external curvature of the outer peripheral wall portion (11), fall within a specified range, thereby reducing the header capacity and weight while securing sufficient pressure resistance.

Abstract: A heat exchanger (20) includes a stack (22) of heat exchanger tubes (24), with the stack (22) having a pair of spaced ends (26, 28) that are received into respective manifolds (30, 32) that direct a first fluid (33), such as an exhaust gas flow of a vehicle, to and from interiors (34) of the tubes (24). The manifolds (30) and (32) are bonded to the respective ends (26) and (28) using a suitable bonding technique, such as soldering. Each end (26, 28) has an outer periphery (54) that includes furrows (56) and elongate, narrow protrusions (58), and each manifold (30, 32) has a wall (60) that extends continuously around the associated end (26, 28) and includes inwardly directed ridges (62) that are received in the furrows (56) and elongate slots (64) that receive the protrusions (58) to provide a tight joint between the wall (60) and the associated end (50, 52).

Abstract: An apparatus for cooling at least one fluid includes separable cold plate and dispenser units. The cold plate unit includes a coolant system, a fluid system and a metallic unit. The coolant system defines a cold plate portion and a tower portion. The cold plate portion of the coolant system has a primary inlet manifold and a primary outlet manifold, and the tower portion has a secondary inlet manifold and a secondary outlet manifold. The coolant system further includes a first plurality of coolant line segments connecting the primary and secondary inlet manifolds and a second plurality of coolant line segments connecting the secondary and primary outlet manifolds. The fluid system also defines a cold plate portion and a tower portion, the portions being in heat exchange relationship with the coolant system. The metallic unit includes unitary cold plate and tower portions which respectively incorporate the cold plate and tower portions of the coolant system and fluid system.

Abstract: A process and apparatus for indirectly exchanging heat with narrow channel in a heat exchange type reaction zone uses manifold space to interconnect the common ends of channels and to provide controlled distribution of additional reactants. The invention simplifies the operation and construction of the heat exchanging type reaction zone by directly communicating reaction channels and/or heating channels with a manifold located at the end of the channels. The manifold can provides the extra function of mixing additional reactants. The invention promotes simplified intermediate injection of reactants over tube and shell heat transfer arrangements that have been used for similar purposes. Improved process control has particular benefits for exothermic reactions. The narrow channels are preferably defined by corrugated plates. The reaction channels will contain a catalyst for the promotion of the primary reaction.

Abstract: A method of securing a plurality of oblong tubes into a plurality of circular openings in a header of a CT or Serpentine style fin core exchanger. One end of each tube is shaped into a circle, inserted into a circular opening in the header and bonded into place thus forming a Flat-Round joint.

Abstract: Disclosed is a refrigerant leak-preventive structure in a heat exchanger. The refrigerant leak-preventive structure comprises: a fin-tubes group having refrigerant leak-preventive grooves recessed at ends of the fin-tubes group; and headers having refrigerant leak-preventive projections formed by double injection molding solution introduced into and cooled in the refrigerant leak-preventive grooves when being coupled with the both ends of the fin-tubes group by a double injection molding.

Abstract: A heat exchanger includes a pair of hollow headers, a plurality of tubes communicated with the headers, corrugated fins disposed between adjacent tubes and at an outside of an outermost tube and a side plate disposed at an outside of an outermost corrugated fin. The header insertion end portion of the side plate is formed into the same or approximately the same cross-sectional peripheral configuration as that of an end portion of the tube, and the side plate fitting aperture is formed into the same configuration as that of the tube fitting aperture. This becomes unnecessary to form a special fitting configuration at the end portion of the side plate, and moreover the workability for forming the side plate fitting apertures and the tube fitting apertures can be enhanced, resulting in enhanced productivity, which in turn can reduce the manufacturing cost.

Abstract: The invention relates to a heat exchanger comprising two manifolds (10). Profiled pipe sections (11) are accommodated with a lamella configuration (12) between said manifolds. According to the invention, an obstructing means (13) for preventing the flow of solder is provided on the exterior of the profiled pipe section (11) between the manifold (10) and the lamella configuration (12). The invention also relates to a method for producing a heat exchanger. The invention provides that the obstructing means (13) is formed on the profiled pipe sections (11) before the sections are cut from a profiled pipe billet.

Abstract: A one-piece extrusion (50) having a flat bottom portion (54) and supporting flat sides (74) is described. The one-piece extrusion (50) is particularly appropriate for use as a header for a heat exchanger in a cogeneration facility or other high pressure vessels. The header (50) is extruded out of steel, stainless steel, or a steel alloy. The flat bottom portion (54) of the header (50) provides a flat surface for drilling apertures (80) and connecting tubes (56) to the header (50), eliminating the need for complicated manufacturing and attachment procedures encountered with the cylindrical headers currently used. The flat bottom portion (54) also provides more surface area for attachment of the tubes (56). The flat sides (74) of the extrusion impart structural support and integrity to the header (50) and allow a greater number of headers to be placed closer together without taking up the space required for typical cylindrical headers.

Abstract: An elongate manifold construction (10) having an longitudinal axis (20) is provided for use in a heat exchanger (12) having a plurality of tubes (14). The manifold construction (10) includes an elongated tank piece (3 2) and an elongated header piece (34). A plurality of embossed beads (48) having openings (50) therein that are engaged by tabs (52) spaced along the longitudinal axis (20) to maintain the tank and header pieces (32, 34) in proper alignment with each other so as to obtain a suitable bond joint therebetween during a bonding operation.

Abstract: An elongate manifold construction (10) having an longitudinal axis (20) is provided for use in a heat exchanger (12) having a plurality of tubes (14). The manifold construction (10) includes an elongated tank piece (32) and an elongated header piece (34). A plurality of embossed beads (48) having openings (50) therein that are engaged by tabs (52) spaced along the longitudinal axis (20) to maintain the tank and header pieces (32, 34) in proper alignment with each other so as to obtain a suitable bond joint therebetween during a bonding operation.

Abstract: A heat exchanger (10), such as a radiator, includes a metal tank (12) having a foot (28) that is integrally formed therewith. The heat exchanger (10) also includes a header (14) having a plurality of crimping tabs (44) extending therefrom. The integral foot (28) of the metal tank (12) has an upper surface (30) and a lower surface (32) with the lower surface (32) intended to rest within an internal channel (46) formed in the header (14). The crimping tabs (44) are folded around the footer (28) so as to lie above and generally parallel to the footer upper surface (30) in order to retain the metal tank (12) in proper alignment with the header (14). After the metal tank (12) and the header (14) are physically assembled, they are sealed to form a leak-free joint.

Abstract: A flat tube block heat exchanger with a plurality of flat tubes with deformed ends. The deformed ends have broad sides that have been deformed to expose the inner surface of the flat tubes. The exposed inner surfaces of the flat tubes are bonded to the exposed inner surface of an adjacent flat tube. The bonded inner surfaces of the adjacent flat tubes form a fluid barrier with tanks located at opposite ends of the flat tubes.

Abstract: A multiple tube bundle heat exchanger includes axially opposite tube plates, a housing, and a plurality of tube bundles disposed between the tube plates. Each of the tube bundles is an independent tube bundle subassembly forming an integral unit having at least one heat exchanger tube with two axial tube ends. The subassembly is made from the exchanger tube and respective tube plates fastened to the two axial tube ends. The housing has a casing part defining a interior and having two axial housing ends with flanges, removable head pieces respectively disposed at the two axial housing ends to be fastened to the flanges, and partitions subdividing the interior into chambers. The number of chambers corresponds to a number of tube bundles. Each of the chambers receives one of the tube bundles. The tube plates and head pieces respectively form seals, and the tube plates delimit distributor, collecting, and/or transfer chambers formed in the head pieces.

Abstract: The present invention provides a heat exchanger including a tank, a plurality of tubes in fluid communication with the tank, and a plurality of fins extending between the tubes. The tank includes a header member and a cover member, each of which is formed from a single sheet of aluminum. The header member includes an elongate generally planar base section having first and second ends and a middle portion disposed between the first and second ends. The header member also includes a flange section that extends along one edge of the base section and a wall section that extends along the opposite edge of the base section. The cover member has a central section that is spaced apart from the middle portion of the header member and a periphery that is joined to the first and second ends of the base section, the flange section, and the wall section.

Abstract: A heat exchanger assembly for a vehicle comprising at least one manifold having walls defining a chamber for retaining fluid. A mounting device is secured to the wall of the manifold. The mounting device includes a seat portion adapted to receive a fluid transmission line. The mounting device further includes an opening extending from the seat portion and aligned with an aperture in the manifold for providing a fluid passageway between the manifold and the fluid transmission line. In addition, the mounting device includes at least one indentation formed therein for capturing contaminates and preventing an intrusion of the contaminates into the seat portion.

Abstract: A heat exchanger for a CO2 refrigerant includes at least three rows of tube groups including a plurality of tubes having an independent refrigerant path, first and second header pipes including a header where a plurality of tube insertion holes into which the tubes are inserted are formed and a tank having partition walls formed along a direction of the flow of a refrigerant, wherein a plurality of return holes are formed in the partition walls, end caps sealing both end portions of the firs and second header pipes, a coupling reinforcement portion installed at least one of the first and second header pipes and reinforcing a coupling force of the header and the tank, a refrigerant inlet pipe connected to the first or second header pipe through which the refrigerant enters, and a refrigerant outlet pipe connected to the first or second header pipe through which the refrigerant is exhausted.

Abstract: A manifold for a heat exchanger comprising a tank, a plurality of tubes arranged to receive fluid therein, a plurality of fins for interspacing the tubes, the fins extending along the length of the tubes to thereby define a core section, wherein the header section is formed with multi-point brazing interfaces for securing said header and said core section during a brazing process. One embodiment provides at least one doubled wall area in close proximity to the tube slot areas to form a structure of increased strength, permitting the material to be reduced in relative thickness. The manifold may be formed from flat sheet stock by extended side walls of the header portion joined by a separate cap to close a top portion of the manifold assembly for the purpose of collecting fluid to and from the tubes and said at least one inlet and outlet.

Abstract: A heat exchanger has a fluid chamber with a peripheral foot, as well as a collector plate with an edge delimiting a groove for a gasket and the peripheral foot. The gasket is formed from a bead of a polymerizable material which is deposited, at a chosen location, on the bottom of the groove, and then polymerized before being compressed by the peripheral foot of the fluid chamber.

Abstract: A heat exchanger for enabling the flow of a heat exchanging medium disclosed. The heat exchanger comprises a collecting box having a peripheral edge; a tube bottom having a peripheral edge and a plurality of openings, the peripheral edge of the tube bottom being coupled to a peripheral edge of the collecting box; an intermediate bottom having a plurality of openings and a peripheral edge, the peripheral edge coupled to the peripheral edge of the tube bottom; and a plurality of flat tubes coupled to the plurality of openings in the intermediate bottom. A method of manufacturing a heat exchanger is also disclosed. The method comprising the steps of coupling a collecting box to a tube bottom; coupling an intermediate bottom to the tube bottom; and coupling a plurality of flat tubes to the intermediate bottom.

Abstract: A tank to header attachment construction for heat exchangers include T-shaped tabs on the header which extend through slots in a flange on a tank. The top bar of each tab has it ends bent out of alignment with the slot to secure the tank to the header.

Abstract: A heat exchanger manifold for use in heat exchanger used mainly in automobiles is provided. The manifold comprises of two components a header and tank. The header consists of several half cylinders that have ferrule openings and communication port stamped on them. The communication ports are in form of channels that coincide with the ferrule opening. The ferrule openings allow the heat exchanger tubes to slide into the manifold and without any interference. The second component of the manifold comprises a tank. Like the header the tank also consists of several half cylinders, which combined with the header forms several full cylinder. The tank also includes an integral seal along the mating end of the manifold. The manifold also contains a unique inlet/outlet port that allows for ease of assembly of the final heat exchanger.

Abstract: In a brazed condenser for an air conditioner, a collecting tube connected with a collector is prefabricated as a one-piece tube. The collecting tube is connected by tack weld seams with the collector before brazing the collecting tube and the collector together.

Abstract: A heat exchanger comprising a process tube attached in heat conducting contact with a hydronic tube. The process tube has a plurality of hydraulically discrete internal passageways that extend through the process tube. The hydronic tube has at least one passageway that extends through the hydronic tube. Optionally, the process tube can be sandwiched between a pair of hydronic tubes so that two heat transfer surfaces on the process tube are in heat conducting contact with heat transfer surfaces on each of the hydronic tubes. Also optionally, the heat exchanger can include a plurality of process tubes that are sandwiched between a plurality of hydronic tubes with each process tube being disposed between a pair of hydronic tubes. The attached tubes can be shaped into a variety of configurations depending on the application in which the heat exchanger will be used.

Abstract: A stacked-type, multi-flow heat exchanger includes a first header pipe and a second header pipe formed opposite the first header pipe. The heat exchanger also includes a plurality of heat transfer tubes extending between the first header pipe and the second header pipe, such that the first header pipe and the second header pipe are in fluid communication via the heat transfer tubes. The heat exchanger further includes a plurality of fins alternately stacked with the plurality of heat transfer tubes. Moreover each of the ends of the first header pipe includes a first tapered portion having a reduced diameter relative to a diameter of a center portion of the first header pipe. In another embodiment, each of the ends of the second header pipe includes a second tapered portion having a reduced diameter relative to a diameter of a center portion of the second header pipe.

Abstract: A heat exchanger (10) having a heat exchanger drain assembly (28) comprising a manifold (12) for storing fluid. A drain port (20) is integrally formed with the manifold (12) and is in selective fluid communication with the reservoir (36) for selectively draining the fluid from the manifold (12). A plug (32) is disposed within the drain port (20) for preventing fluid from draining from the manifold (12). The plug (32) is removable from the drain port ((20) for allowing fluid to drain from the manifold (12). A frangible wall (40) is formed between the drain port (20) and the reservoir (36) to close the drain port (20) and create a non-functional drain port (20), thereby preventing fluid communication between the drain port (20) and the reservoir (36). The frangible wall (40) is fracturable to provide the fluid communication between the drain port (20) and the reservoir (36) for draining the fluid from the tank (12).

Abstract: There is provides a heat exchanger comprising: a plurality of tubes (110) stacked on each other; and a pair of header tanks (140), each header tank (140) having a flow section (151) in which fluid flows, extending in a direction of stack of the tubes (110), wherein both end sections (111) of the tubes (110) in the longitudinal direction are joined to the pair of header tanks (140), the flow section (151) of each header tank (140) and the inside of each tube (110) are communicated with each other, a tip position (a) of the tube end section (111) is arranged in an outside region of the flow section (151), and an inner wall width size (b) of the flow section (151) is smaller than a size (c) in the width direction of the header tank (140) at the tube end section (111).

Abstract: A header (10) for a heat exchanger (1). The header (10) has an outer elongate member (20) with a curved section that has a plurality of ferrules (30) projecting inwardly. An inner elongate member (60) is adapted to mate with the outer elongate member (20). The inner elongate member (60) has first and second ends (26, 28) and a plurality of teeth (72) proximate at least one of the first and second ends (26, 22). The teeth (72) at least partially cooperate with the ferrules (30) when the outer elongate member (20) engages the inner elongate member (60). A heat exchanger (1) incorporating the two-piece headers (10) is also disclosed.

Abstract: A quick connect coupling for connecting a fluid conduit to a header tank includes first and second engaged and sealed coupling parts. The first coupling part includes a radially inner hollow cylindrical wall with a radially outer surface and diametrically opposite, axially directed fingers spaced radially outward of the cylindrical wall and attached thereto. The second coupling part includes a generally circular radially inner wall sized to be axially received between the cylindrical wall and the fingers and has an interior surface facing the radially outer surface of the cylindrical wall. A radially inwardly opening groove is located in the interior surface and a circular seal is disposed therein to sealingly engage the radially outer surface of the cylindrical wall when the coupling is assembled.

Abstract: A protective cover 7 is disposed on an airflow upstream side of a tube 2. Even when relatively large flying materials such as gravel impinge against a radiator 1, the flying materials are prevented from directly striking the tubes 2. As the tube 2 can thus be protected from the relatively large flying materials such as gravel, the radiator 1 can continue operating, and the reliability of the radiator 1 can be improved.

Abstract: A laminated-type heat exchanger has plural flat tubes in which refrigerant flows and plural corrugated fins each of which is disposed between adjacent two flat tubes. In the heat exchanger, plural protrusion portions protrude from an outer wall surface of each flat tube toward the corrugated fins, so that recess portions through which air flows are provided at least between adjacent protrusion portions. The protrusion portions are provided such that air meanderingly flows through the recess portions from an upstream end side to a downstream end side of each tube in a flow direction of air.

Abstract: A radiator (10) with molded plastic header tanks (14,18) has an electric coolant pump and housing assembly (20) integrally formed with the outlet header tank (18). A first half (24) of the pump housing is integrally molded into the header tank (18) and a low point and across a smooth and wide transition. The second half of the pump housing (26) mates at a sealed circular seam to the first half, with an electric coolant pump (28) held closely inside the two. No fasteners are needed to mount the pump, and the assembly minimizes parts and potential leak points.

Abstract: A refrigeration device is provided having a compressor, a condenser, an evaporator, and tubing to connect the compressor to the condenser, the condenser to the evaporator and the evaporator to the compressor. The condenser coil includes a plurality of tubes arranged in horizontal and vertical rows extending between vertically arranged header plates with return bends interconnecting the tubes to form a serpentine shaped circuit. The header plates are provided with at least one notch in a bottom edge thereof to accommodate a tube extending therebetween. In an embodiment, a wet loop is positioned in the area of the notches in the header plates.

Abstract: A keel cooler having a beveled bottom wall, with orifices on the inner wall of the exterior tubes extending into the header, the orifices being in the natural flow path of coolant flow. The orifices are sufficiently large so as not to restrict the flow of coolant. The anode assemblies and drain plugs are mounted on the beveled bottom wall.