Abstract: A heat exchanger has a pair of headers which are formed from only two components. Each header is formed from a header channel which has an open portion which extends along the length of the header channel. Grooves are formed on either side of the open portion for receiving a header plate. The header plate is formed with a series of holes extending along the length of the plate. A fluid partition and end caps are formed from a folded portion of the header plate to direct fluid flow through the header pipe. The header plate is inserted into the header channel by inserting the side edges of the header plate into the grooves and sliding the header plate from one end of the header channel to the other so that the header plate extends over the open portion with the fluid partition and end caps protruding across and blocking the interior of the header channel. In an alternate embodiment, two header plates having end caps at each end are positioned within the header channel.

Abstract: An inner half cylinder and an outer half cylinder are brazed to each other to form a cylindrical header tank. Both ends of tubes are connected to the inner half cylinder. An opening of the outer half cylinder is communicated with an opening of a joint pipe. A tongue portion which is provided on the periphery of the opening of the outer half cylinder is inserted and curled in the opening of the joint pipe so as to fix the joint pipe on the outer half cylinder firmly.

Abstract: A heat-exchanger includes a plurality of stacked tubular elements each having tanks, and passage-forming protrusions defining a passage connecting the tanks, fins interposed between adjacent ones of the tubular elements and contacting the passage-forming protrusions, inlet/outlet units each comprising a barrel-shaped element protruding from and open to the tank of a respective one of the tubular elements, inlet/outlet pipes fitted coaxially in contact with and joined to the barrel-shaped elements, respectively, and a measure (reinforcement) for preventing parts of the barrel-shaped elements from being deformed as the inlet/outlet pipes are fitted to the barrel-shaped elements during the assembly of the heat exchanger to in turn maintain the integrity of the joints between the inlet/outlet units and the inlet/outlet pipes. The reinforcement may include a ring disposed around the barrel-shaped element adjacent an end thereof.

Abstract: A multi-pass U-flow type evaporator for an air conditioning system provided with a flow control insert which allows the inlet port and the outlet port to be located on the same face of the evaporator core and in close proximity to each other.

Abstract: A heat exchanger, especially a cooling radiator for motor vehicle engine, comprises a multiplicity of tubes of oblong cross section, each having an end portion fitted in a corresponding hole formed in a header plate, the joint being sealed by means of a sealing gasket. The sealing gasket has a tubular portion compressed between each tube end portion and an internal surface of the corresponding hole in the header plate, each tube end portion being formed with a peripheral bead spaces away from the terminal edge of the tube.

Abstract: A headered tube and type condenser for automotive applications has a pair of tanks with side walls that face the ends of the tubes, and flat face walls perpendicular thereto. After installation, the tank face walls face the vehicle radiator. The ends of the tubes extend partially into the tanks, and have a predetermined spacing from the side walls of the tank, A fitting, either inlet our outlet or both, is secured to the face wall of either or both tanks. The portion of the fitting that extends into the tank has a smaller width than the predetermined spacing, and so can be placed anywhere along the entire length of the face wall without hitting the ends of the tubes.

Abstract: An assembly for mounting a plurality of modular heat exchangers between respective pairs of fluid openings in parallel opposed faces of an inlet header and an outlet header, including modules providing generally axial flow between the headers, each of which modules has an axially extending sleeve defining a fluid opening on one end and an end flange defining a fluid opening on the opposite end, and an end chamber having an axially flexible end wall and forming a connection between either or both of the end sleeve and the end flange and the heat exchanging portion of the module, the assembly including compressible sealing members attached to the end sleeve and the end flange and compression type mounting brackets by which the sealing members are compressed to seal the interface and provide a demountable connection between the module and the headers.

Abstract: A tubular body having a pipe joint member attached to the peripheral wall thereof and communicating with the interior of the tubular body. The peripheral wall of the tubular body includes a curved wall portion having a circular-arc cross section and formed with a hole. The joint member has an outward flange at an intermediate portion of its length and a tubular portion positioned beyond the outward flange toward one end of the joint member and has its outer end inserted in the hole in the tubular body curved wall portion. The outward flange of the joint member is brazed to the outer surface of the tubular body curved wall portion with a brazing ring which is fitted around the joint member tubular portion and positioned outside the tubular body. The brazing ring is made of a brazing sheet including cladding of brazing material over each of its opposite surfaces and has one surface joined to the outward flange and the other surface joined to the outer surface of the curved wall portion.

Abstract: A connecting tube for a fluid header of a heat exchanger, especially a tubular header for a condenser of an air conditioning installation for a motor vehicle, comprises a cylindrical tubular body delimited by a metallic wall and extended by a flattened tubular end portion formed by deformation of the wall and arranged to be fitted into an oblong aperture formed in a metallic wall of the fluid header. The connecting tube has at least one shear cut, formed in the thickness of the wall and extending over part of the periphery of the connecting tube in a region lying between the body and the flattened end portion. The shear cut defines a frontal lip which bears against the wall of the fluid header after the flattened end portion has been fitted in the latter.

Abstract: A fastener for securing a tube assembly to a mating assembly in a sealing engagement includes a vertical member and two integrally formed side members each having an inwardly projecting lip for forming a vertical slot with the vertical member. The mating assembly includes an assembly mount with integrally extending side ribs for engaging the inwardly projecting lip of each side member of the fastener. The tube assembly includes a circular rib near the end of a tube which engages the back of the vertical member of the fastener when the fastener and mating assembly are engaged. An "O-Ring" seal located between the circular rib of the tube and the mating assembly mount is compressed forming a sealing engagement between the tube assembly and the mating assembly.

Abstract: A compact, modular heat exchanger is field assembled and supported solely on its associated piping system. Internally, it has stacked clamshell cells. The cells are enclosed to form an essentially cubic configuration by two inlet headers, two outlet headers, a top plate, and a bottom plate. A first fluid flows in the interior of all cells, from header to header, and a second fluid flows around, but not in, the cells, from and to its respective headers. Conical and tetrahedral embossments extend inwardly and outwardly from each clamshell section to provide standoffs preventing collapse of the cell and to space adjacent cells apart. Knockouts located within the headers facilitate pipe connections. An alternative embodiment include internal baffling to establish a counterflow pattern. Another alternative embodiment provides fluting of heat exchange surfaces instead of embossments.

Abstract: A tubular body according to the present invention has a pipe joint member attached to the peripheral wall thereof and communicating with the interior of the tubular body. The peripheral wall of the tubular body includes a curved wall portion having a circular-arc cross section and formed with a hole. The joint member has an outward flange at an intermediate portion of its length and a tubular portion positioned beyond the outward flange toward one end of the joint member and has its outer end inserted in the hole in the tubular body curved wall portion. The outward flange of the joint member is brazed to the outer surface of the tubular body curved wall portion with a brazing ring which is fitted around the joint member tubular portion and positioned outside the tubular body.

Abstract: An oil/water heat exchanger for a motor vehicle has an inlet tube branch and an outlet tube branch joined to the body of the heat exchanger. Each of these tube branches has a bent portion close to the heat exchanger body. The transverse cross section of the bent portion is flattened (elongated), with its minor dimension extending in the direction of the radius of curvature of the longitudinal axis of the tube branch. This enables this radius, and therefore also the amount by which the tube branches project from the tube body, to be reduced for a given fluid passage cross sectional area.

Abstract: A heat exchanger, for example a condenser for a motor vehicle air conditioning system, comprises a matrix of cooling fins through which extend serpentine tubes consisting of hairpin shaped tubes joined by tubular junction pieces. The fin matrix is surmounted by an end plate. The heat exchanger is joined to an inlet or outlet flow pipe by a connecting device comprising a connecting block having a connecting element for connecting it to the flow pipe. The block has a recess in which the end of one or more of the heat exchanger tubes is sealingly mated, and is secured on the end plate of the heat exchanger by fastening means.

Abstract: A heat exchanger body is connected in fluid communication with external tubing via tube fittings. The tube fittings are supported by a supporting member that is brazed to the heat exchanger body. The supporting member can securely support the tube fitting. The supporting member can be brazed together with the heat exchanger body, thus making assembly and fabrication of the heat exchanger easier.

Abstract: A heat exchanger has a casing formed with two adjacent apertures, and two tubular pipe connections are mounted on the casing so as to communicate with these apertures in the latter.The two pipe connection are fixed with respect to a common base plate which is fastened to the casing by snap-fitting means, with the base plate having two orifices which communicate respectively with the two pipe connections and which are arranged to be aligned with the apertures in the casing, a sealing member being interposed between the base plate and the casing. The invention is especially applicable to radiators for cooling motor vehicle engine lubricating oil.

Abstract: A heat exchanger has a casing formed with two adjacent apertures to which two tubular pipe connections are secured.The apertures in the casing are so configured as to act as one half of a bayonet fitting, the other half of each bayonet fitting being a bayonet end portion fixed to each pipe connection. These bayonet end portions are adapted to be put into a locking position on the apertures, and are provided with base portions which are configured according to the spacing between the two apertures. The base portions have stop means which are arranged to cooperate with each other to lock the end portions in position when both of the latter are in their locking position. The invention is especially applicable to motor vehicle engine oil coolers.

Abstract: A high efficiency fuel-fired condensing furnace is provided with a compact recuperative heat exchanger structure comprising a metal primary heat exchanger positioned above and operatively connected to the inlet side of a secondary heat exchanger formed from a polyetherimide (PEI) plastic material. The primary heat exchanger is formed from a horizontally spaced series of vertically serpentined metal combustor tubes, and the second heat exchanger if formed from horizontally spaced apart injection molded inlet and outlet collector boxes interconnected by a horizontally spaced series of elongated hollow extruded plate members sealingly secured at their opposite ends to the collector boxes with the side edge-to-side edge widths of the hollow plate members being vertically oriented. The outlet ends of the metal tubes are operatively connected to the plastic inlet collector box.

Abstract: A pneumatic transport system for transferring particulate material from a first pressurized container to a second container which is under a lower pressure, while successively reducing the pressure, comprising a number of parallel tubes (36), arranged in series, said tubes being joined together at their ends by means of transfer chambers (38) for transferring a gas/material stream from an upstream tube (36) to a downstream tube (36). The transfer chamber (38) are formed with tubular inlets and outlets (52, 56) opening out into a space (54) where a gas/material stream is transferred from the inlet (52) to the outlet (56). Between the inlet (52) and the outlet (56) there is a double-bent unsymmetrical surface, bulging towards the space (54), which conforms to the wall surfaces of the inlet (52) and the outlet (56).

Abstract: A heat exchanger comprises a bundle of parallel tubes disposed in rows and having respective end portions each of which is received in a collecting plate which is formed with holes. These holes may be bounded by lips. Each hole in the collecting plate receives the respective end portions of a plurality of adjacent tubes forming part of different ranges of the tube bundle. The pitch defined between two tubes in two adjacent rows may thus be reduced to a minimal value so as to optimize the performance of the heat exchanger, with a minimal width of the collecting plate.

Abstract: A quick action coupling is disclosed for connecting simultaneously at least two pipes or hoses to the water box of a radiator or to the inlet and outlet members for the cooling fluid of a motor vehicle engine, said water box or said members comprising a generally cylindrical shaped chimney and n ways (n being a whole number at least equal to two) which open into said chimney, said coupling comprising n rigid conduits whose outlets into said connector are of a shape and position mating with the outlet orifices of said corresponding ways in the chimney of the water box or of said members so as to form n fluid circuits, as well as seals for sealing between the different fluid circuits with respect to each other comprising: a male connector of a form mating with said chimney; and sealing of said circuits with respect to the outside is provided by a single additional seal whatever the number n of circuits.

Abstract: The invention relates to urethane polymers exhibiting excellent heat transfer properties. Specifically these polymers are used as adhesives for the purpose of adhering cooling/condensing tubes to metal panels for the manufacture of freezer and refrigerator cabinets.

Abstract: A heat exchanger includes a serpentine tube, a plurality of fins provided on the sides of the tube, and unions into which the respective end portions of the tube are inserted and to which the end portions are brazed. An expanded portion is formed on the tip of each inserted end portion of the tube, and a corresponding engaging portion is provided in each union. The expanded portion is engaged with the engaging portion of the union. Since the end portion of the tube is temporarily fixed to the union by the engagement of the expanded portion with the engaging portion, it is possible to simultaneously braze the tube to the union, and the tube to the fins, in a furnace. The manufacturing process of the heat exchanger can be simplified, the efficiency of the brazing process is increased, and the quality of the brazed portion is consistently high.

Abstract: A heat exchanger is described which includes a plurality of flat tubes for conducting refrigerant and a plurality of corrugated fins fixedly sandwiched between the flat tubes. The flat tubes and the corrugated fins jointly form a heat exchange region. First and second header pipes are fixedly and hermetically connected to the flat tubes and communicate with the interior of the flat tubes. The header pipes are also provided with inlet and outlet pipes for connecting the heat exchanger to other external elements of an automotive air conditioning system. The inlet and outlet pipes protrude from opposite sides of the header pipes in the direction of thickness of the heat exchanger which is perpendicular to the longitudinal axes of the flat tubes. One end of each of the inlet and outlet pipes is shaped so as to prevent interference with the ends of the flat tubes that are inserted into the interior of the header pipes.

Abstract: A heat exchanger core having a plurality of spaced fluid conducting tubes operatively connected in series at their upper ends by projecting tank portions. The tubes have flattened main body portions that extend downward from the tank portions to terminal ends having rows of integral spacing and locking links formed with snap fasteners for releasably locking onto one another to connect the lower end of the tubes to one another providing column strength thereby preventing damage to corrugated metal air centers disposed between adjacent tubes by compression forces exerted on the core. In addition to the spacing and locking links, this core features integral snap fasteners to lock the separate plates of each tube together in face to face relationship so that the entire core is mechanically connected and interlocked and is ready for permanent connection by brazing.

Abstract: An assembly device for a heat exchanger and tubular connector assembly, in which the tubular connector opens out into an opening in a tank of the heat exchanger and is fixed firstly to a flexible hose by a permanent connection and secondly to the tank via an easily disassembled resilient connection, with sealing between the tubular connector and the tank being provided by an elastomer ring which is radially compressed therebetween. The tubular connector and the tank are in alignment along an assembly axis and they constitute two parts to be assembled by snap fastening at least one axially-directed tab carried on one of the two parts. The tab is radially resilient and is provided with a snap-fastening catch which engages axial abutment means carried by the other one of the two parts. The tab has an expansion spring configuration whose resilient reaction acts radially in the direction tending to maintain the tab pressed against the abutment means when the said two parts are in the assembled position.

Abstract: The tubes of a heat exchanger core are interlocked and spaced from are another prior to brazing in a furnace. Each of the separate plates of each tube is formed with discrete laterally spaced tabs which project transversely to the plane of the plate for spacing and for locking adjacent tubes with one another. These tabs are an integral part of stamped plate and are bent so that they are generally perpendicular to the plane of the plate. The locking tabs have a flat, upturned locking end that is resilient to closely fit over the end of an adjacent plate of an adjacent tube to interlock adjacent tubes together. Straight spacer tabs are used to spaced separate tubes from one another. These spacer tabs are similar to the locking tabs but have straight abutment ends instead of the flattened locking end portions to provide column support. With the locking and spacing tabs in place, the tubes are arrayed in a core which is securely interlocked and accurately spaced.

Abstract: The invention provides an apparatus for carrying out chemical reactions, in the presence of at least one catalyst, in at least one reaction zone equipped with heat exchanger plates which make it possible to control the temperature of the zone. The apparatus mainly comprises a reactor, at least one central distributor manifold, a plurality of distributor manifolds, at least one central receiver manifold, a plurality of receiver manifolds and a plurality of continuous and elongate hollow plates, preferably substantially perpendicular. The hollow plates can contain adjacent channels having one of the following shapes: square, rectangular, triangular, sinusoidal.

Abstract: The invention relates to an apparatus for carrying out chemical reactions in the presence of at least one catalyst, in at least one reaction zone equipped with heat exchanger plates allowing the temperature of the zone to be controlled. The apparatus mainly comprises a reactor (1), at least one central distributing manifold (6.1a), a plurality of distributing manifolds (6.2a), at least one central receiving manifold (6.5a), a plurality of receiving manifolds (6.4a), a plurality of connecting manifolds (6.6a) and a plurality of hollow, continuous, elongate plates (6.3a), each divided into two hollow half panels (6.3, 1a and 6.3, 2a). The plates are preferably substantially parallelepipedic and may contain adjacent channels having one of the following forms: square, rectangular, triangular, or sinusoidal.

Abstract: The present invention provides a method of fixing a pipe by using a plate-like support with the said of an elastic holding piece or pieces. The plate-like support has a fitting hole through which it is fixed to the structure related to the pipe and a pipe clamping hole through which the pipe is inserted. Further, the elastic holding piece has a flat bottom surface and is provided with an engaging wall and an engaging claw at the front and rear ends thereof, respectively, with the provision of an engaging groove therebetween and the pipe has at least a flat portion on the outer periphery thereof. Accordingly, when the pipe is inserted into the clamping hole of the plate-like support after the holding piece is attached to the pipe, the engaging groove of the holding piece is brought into engagement with the inner periphery of the pipe clamping hole of the plate-like support with the bottom surface of the holding piece being in contact with the flat portion of the pipe.

Abstract: The fluid tank is divided by a planar partition (3) into a fluid inlet compartment and a fluid outlet compartment. Toward the outside, the fluid tank has an annular protruding rim (19) surrounding two openings (1, 2), one for each of the two compartments. A coupling device case en bloc including inlet and outlet pipes for the fluid, which are placed facing the openings (1, 2), is provided with centering means cooperating with the rim (19).

Abstract: A header for a tube-in-tube heat exchanger is formed in a single piece such that the manifold plate in one end thereof is integrally formed with the header body. Such a design eliminates the process of brazing the manifold plate into the header body, thus substantially simplifying the assembly process. In order to accommodate thinner walled tubes and a thinner manifold plate, reinforcing sleeves are placed around the inner tubes ends and are brazed in place in the manifold plate openings.

Abstract: A device for suspending a horizontal heat exchange tube on a vertical support tube is provided comprising:(a) an element for securing the horizontal tube, in the general form of a cradle, consisting of two symmetrical cylindrical cross-bars and two connecting members for the cross-bars in an arc of a circle;(b) two elements for securing the vertical tube, each comprising a plane portion provided on their side facing the vertical tube with two lateral edges and an oblique portion forming a folded-over part; these elements interlocking by engagement of their recesses with the wedge-shaped parts of the cross-bars of the securing element for the horizontal tube, and being welded to the vertical tube along the lateral edges of their plane portion.

Abstract: The device for protecting the poles of an electromagnetic inductor comprises a heat exchanger formed by one or more co-planar metal tubes (6) designed to allow the circulation of a cooling fluid therein and of such an arrangement that there is at most one electrical junction between any two tubes or tube elements. The exchanger is fastened to a rigid electrically insulating support plate (5) coated with refractory concrete (10) and covers the entire polar surface as far as the cowls (3). The exchanger can be shaped in the form of a series of alternating hairpins or in the form of a spiral with one or more branches. The device serves especially for protecting the poles of inductors used for the induction heating of metal products.

Abstract: A heat exchanger for use in an automobile air conditioning system including inlet and outlet union elements is disclosed. The heat exchanger comprises a plurality of flat tubes for conducting refrigerant and a plurality of corrugated fins fixedly sandwiched between the flat tubes. The flat tubes and the corrugated fins jointly form a heat exchange region. First and second header pipes are fixedly and hermetically connected to the flat tubes and communicate with the interior of the tubes. The header pipes are also provided with inlet and outlet union elements for connecting the heat exchanger to other external elements of the air conditioning system. Each of inlet and outlet union elements includes a rectangular parallelpiped block having a cavity formed therein. Each of the blocks is generally located at a coner of the heat exchanger defined by the top and bottom ends of the header pipes and the heat exchanger region.

Abstract: Improved performance is obtained in a multi-tube reactor for oxidation of ethylene to ethylene oxide by providing a distribution zone for the coolant located downstream of the catalyst and a contiguous cooling zone. The effluent gases from the oxidation are cooled in the cooling zone by a fluid, which has been only slightly preheated and distributed uniformly in the distribution zone by contact with tubes in which the effluent gases are in low-turbulence flow. Uniform distribution of the coolant provides substantially equal cooling of the effluent gases in each tube, thus minimizing the variation in effluent gas temperature among the tubes. Preferably, the tubes in the cooling section are packed with inert particles to facilitate heat transfer, while the tubes are empty in the distribution section to reduce heat transfer.

Abstract: A connection system for interconnecting a heat exchanger and a pipe union, in which the pipe union (5) opens out into a connection tube (4) of a heat exchanger water box (3), with the pipe union being fixed to a flexible pipe (6) via a permanent connection and being fixed to the connection tube via an easily-released resilient connection. The resilient connection is constituted by a locking device comprising two diametrically opposite fingers (19) carried by a ring (18) fixed inside the water box (3) and disposed coaxially with the connection tube (4). The fingers (19) slope towards the axis of the connection tube and they are resilient in the radial direction, with two notches (22) being provided in the leading end (7) of the pipe union (5) in order to receive the locking resilient fingers (19) by snap-fastening when the pipe union (5) is engaged in the connection tube (4). The invention is applicable to providing rapid connections in the automobile industry.

Abstract: A tube and shell type heat exchanger providing multi-pass contraflow of two heat exchange fluids includes a cylindrical outer shell, a modular baffle assembly guiding a shell fluid, a plurality of multi-wall tube sets and a pair of opposed end assemblies. A fixed end assembly fixedly receives one end of the tube sets and provides manifolding for directing multi-pass tube fluid flow through the tube sets. An opposite, floating end assembly slidably receives and seals floating tube ends to accommodate temperature induced expansion and contraction. The floating end assembly also provides manifolding for directing the multi-pass tube fluid flow through the tube sets. A triple wall tube set may be employed to provide extra protection against contamination of heat exchange fluids.

Abstract: A tube and shell type heat exchanger providing multi-pass contraflow of two heat exchange fluids includes a cylindrical outer shell, a modular baffle assembly guiding a shell fluid, a plurality of multi-wall tube sets and a pair of opposed end assemblies. A fixed end assembly fixedly receives one end of the tube sets and provides manifolding for directing multi-pass tube fluid flow through the tube sets. An opposite, floating end assembly slidably receives and seals floating tube ends to accommodate temperature induced expansion and contraction. The floating end assembly also provides manifolding for directing the multi-pass tube fluid flow through the tube sets. A triple wall tube set may be employed to provide extra protection against contamination of heat exchange fluids.

Abstract: A support device and structure for supporting horizontal tubes of a conventional or fluidized bed steam generator comprising a vertical tube for carrying plural pairs of support brackets. Each support bracket has a central sleeve with a pair of opposite extending tube hooks that taper in width from the sleeve, outwardly to an end of the tube hook. The ends of the tube hooks for each pair of support brackets extend toward each other, but are maintained at a distance from one another to avoid the accumulation of ash or other bed material. Welded-on nubs along the length of the support tube localize the axial position of the bracket pairs.

Abstract: An intercooler has a highly compressible seal pressed between an inside surface of the intercooler housing and core. The seal has a peripheral bead and is made of silicone.

Abstract: Shell-and-tube transfer line heat exchangers are disclosed, having inlet ends with a flow streamlining device comprising, in combination:flared ends, preferably in the form of hollow truncated cones, whose smaller ends are aligned with and mated to the inlet ends of the heat exchange tubes in a conventional transfer line heat exchanger, the ends of these heat exchange tubes being contained within tubesheets, the flared ends extending away from the inlet and tubesheet, andpeaked gas guides, preferably in the form of closed, concave gables having rounded, smooth tops, which rise between the rims or edges of adjacent larger ends of the flared ends and enclose the spaces between these rims or edges.Methods of quenching high temperature gases while recovering useable heat therefrom using these modified transfer line heat exchangers are also disclosed.

Abstract: A snap on fillerneck for a tank 52, 76 on a heat exchanger includes a hollow body 10 having an interior sealing surface 20 intermediate its ends 12, 14 which is adapted to be engaged by a seal 22 on a pressure cap 24 and which faces axially toward one end 12 of the body 10. An exterior flange 28 is located on the end 12 of the body 10 and has a pressure cap retaining surfaces 30, 32 for retaining the pressure cap 24 thereon. Resilient fingers 36 extend from the other end 14 of the body 10 and have integral, generally radially movable retaining surfaces 38 for retaining abutment with an end 58, 58' in a mounting element 50, 50'. The body 10 includes an exterior sealing surface 44 intermediate the ends 12, 14 thereof for cooperation with a seal 46 to seal the interface of the body 10 and the mounting elements 50, 50'.

Abstract: A manifold for a heat exchanger or the like formed from a single sheet of metal with a plurality of tubular portions formed in a row by drawing the metal sheet, and then bending the metal sheet to form at least one conduit in communication with the tubular portions for establishing a flow path therethrough.

Abstract: A tube support for supporting horizontal tubes from an inclined vertical support tube passing between the horizontal tubes. A support button is welded to the vertical support tube. Two clamping bars or plates, the lower edges of one bearing on the support button, are removably bolted to the inclined vertical tube. The clamping bars provide upper and lower surface support for the horizontal tubes.

Abstract: A frame plate (11) for a plate heat exchanger has two ports (12, 13), to which there are connected two tubes provided with annular flanges (16, 17). The ports (12, 13) are situated so close to each other that there is no room for the flanges (16, 17) of the two tubes to be arranged side by side. The problem is solved, according to the invention, by arranging at least one port (12), between the frame plate (11) and the annular tube flange (16), at least one removable spacing member (14) surrounding a communication channel between the port (12) and the interior of the tube, the tube flange (16), further, being connected with the frame plate (11) by means (18) separate from the spacing member (14) in a manner such that the latter is clamped between the frame plate (11) and the tube flange (16).

Abstract: An improved horizontal type radiator is disclosed in which the top wall of a header tank, into which a bank of radiator tubes are opened, is externally raised into an annular bulge formed to encircle an upper pipe hole bored in the wall through which a water filling pipe is inserted into the header tank forming an annular space about the inserted lower end of the pipe. Also, the bottom wall of the header tank is outwardly bulged into an annular bulge formed to encircle a lower pipe hole bored in the wall through which a water passage pipe is inserted into the header tank forming an annular space about the inserted end portion of the water passage pipe. With this arrangement, in operation when the water flows from the radiator tubes into the header tank, the water has limited chance of entraining air within the header tank, since the upper annular space in which air may possibly be entrained offers only a minimum contact surface of air with the water.

Abstract: The specification discloses an air-to-air, polymeric heat exchanger having a housing and a core removably mounted within the housing. The housing includes four generally identical duct units, which are secured to one another, and a top and a bottom, which are secured to the duct units. The core includes a pair of end walls and a plurality of tubes extending between, and opening through, the end walls. Each end wall includes a plurality of tubular projections or pockets extending from the end wall in a common direction. Opposite ends of the tubes are secured within the tubular pockets in the opposite end walls. A method of constructing the core includes the step of severing the tubular projections after the tubes are positioned therein to expose the tube interiors through the end walls. Preferably, the tubular projections are severed using a hot wire to also fuse the tubes within the end walls.

Abstract: A heat exchanger closure connection including a shell closure flange extending outwardly from the shell and including a shell closure flange sealing surface. A tube closure flange extends outwardly from an inner tube, which is positioned within the shell, and includes axially spaced apart first and second sealing surfaces. A first seal ring is positioned between the first seal surface of the tube closure flange and the shell closure flange sealing surface. A split ring assembly is fitted within a groove in the tube closure flange and in abutting engagement with the shell closure flange. A locking flange is positioned about the tube closure flange engaging the first seal ring.

Abstract: In production of a serpentine-type aluminum heat exchanger having an aluminum flat tube with a plurality of fluid passageways and aluminum header pipes connected to opposite ends of the flat tube, flat sleeves with outer end flanges of aluminum alloy brazing filler metal are fitted on the opposite end portions of the flat tube while the end flanges being in contact with outer surfaces of the header pipes. The sleeves and end flanges are melted by heating so that the header pipes are brazed to the flat tube.