Abstract: A method of forming a cast heat exchanger plate includes forming at least one hot core plate defining internal features of a one piece heat exchanger plate and at least one first set of interlocking features. At least one cold core plate is formed defining external features of the heat exchanger plate and at least one second set of interlocking features. A core assembly is assembled wherein each hot core plate is directly interlocked to the at least one cold core plate. A wax pattern is formed with the core assembly. An external shell is formed over the wax pattern. The wax pattern is removed to form a space between the core assembly and the external shell. The space is filled with a molten material and cures the molten material. The external shell is removed. The core assembly is removed. A core assembly for a cast heat exchanger is also disclosed.

Abstract: A thermal management device suitable for use as an electronic chassis includes a monolithic, monocoque body having integrally formed channels for carrying thermal energy away from a heat source, such as electronic components. The device may be fabricated using additive/subtractive manufacturing processes such as ultrasonic consolidation.

Abstract: A method of fabricating boiler water walls that includes the steps of forming a subpanel formed of at least one fin and one tube by laser arc welding the at least one fin to the one tube and then laser arc welding a predetermined plurality of subpanels together in a two-dimensional plane by laser arc welding an additional joining element between respective subpanels to form the water wall.

Abstract: A method of thermal interface material (TIM) assembly includes plating a seed layer on each of a plurality of graphite film layers, each of the graphite film layers comprising parallel-oriented graphite nanoplates, stacking the plurality of graphite film layers, each of the plurality of graphite film layers separated by at least one solder layer, pressing together the stacked graphite film layers, and applying heat to the plurality of graphite film layers and respective at least one solder layer in a vacuumed furnace to form a graphite laminate.

Abstract: A fuel system includes an internal combustion engine, a fuel device and a heat exchanger. The internal combustion engine receives an air/fuel mixture and produces heated exhaust air. The fuel device receives fresh air and provides the air/fuel mixture that is received by the internal combustion engine. The heat exchanger receives the heated exhaust air from the internal combustion engine and fresh cool air, transfers heat energy from the heated exhaust air to the fresh cool air, and provides the fresh air to the fuel device. The provided fresh air is the fresh cool air that has received the heat energy.

Abstract: A method of making a fluid cooled assembly that incorporates a base that forms a partial enclosure defining an interior void space and having a top wall that has a top surface and that defines at least one opening through the top wall to the void space, the base further defining fluid entrance and exit ports into the void space, the top wall being made of material that can be friction stir welded. A lid having a size and shape substantially conformal to the opening, having a top surface and a bottom surface that defines a set of downwardly extending pins, and that is formed of a material that can be friction stir welded to the base is placed into the opening so that the lid top surface is flush with the top surface of the base top wall and friction welding the lid to the base.

Abstract: A plate for the use in a heat exchanger cassette, where the plate comprises a corrugated pattern having a plurality of ridges (9) and valleys (10), and where the plate comprises a sealing gasket groove (3) encircling a heat transfer surface (8) that will be part of a contact-free fluid channel when two cassettes comprising at least one plate each are positioned adjacent each other, wherein the sealing gasket groove (3) comprises a base surface with a first, flat section (12) and a second, bent section (13), and where the bent section is angled with the angle ?. The advantage of the inventive plate is that an airtight heat exchanger cassette can be obtained in an easy and cost-effective way.

Abstract: A method for forming cooling channels in an interface for soldering to a semiconductor structure. The method includes: forming a metal seed layer on a surface of a substrate; patterning the metal seed layer into a patterned, plating seed layer covering portions of the substrate and exposing other portions of the substrate; using the patterned plating seed layer to form channels through the exposed portions of the substrate; and plating the patterned plating seed layer with solder. A heat exchanger haying cooling channels therein is affixed to one surface of the interface and the semiconductor structure is soldered to an opposite surface of the interface. The cooling channels of the heat exchanger are aligned with the channels in the interface.

Abstract: The present invention relates to a method for producing a heat exchanger. The heat exchanger comprising at least one heat conducting conduit for passage of a first medium and at least one block of an open cell porous medium for passage of a second medium. The method comprises providing at least one groove in the open cell porous medium. Thereafter, the porous medium is bent in a direction such that at least part of the grooves are opened and heat conducting conduits are applied in this at least one opened groove. Thereafter, the porous medium is rebend such that the heat conducting conduits are locked in said open cell porous medium.

Abstract: A heat exchanger including a shell forming a generally cylindrical housing, a plurality of dividers within the shell extending along the length of the shell, wherein the dividers separate the shell into sections and each section forms a shell pass. The heat exchanger can further include a plurality of tube passes, wherein at least one tube pass is contained within each of the shell passes, and each tube pass comprises a plurality of tubes extending along the length of the shell, a shell inlet passage configured to receive a first fluid into a first shell pass and a shell outlet passage configured to discharge the first fluid from a last shell pass, and a plurality of shell pass passages formed in the dividers near a first end or a second end of the shell configured to allow flow of the first fluid from one shell pass to the next shell pass.

Abstract: A surface treatment method capable of imparting exceptional corrosion resistance and moisture resistance to an NB heat exchanger. The method includes subjecting an NB heat exchanger to a chemical conversion treatment to form a chemical conversion film on the surface thereof using a chemical conversion treatment agent that contains zirconium and/or titanium in a total amount of 5-5,000 ppm by weight, vanadium in an amount of 10-1,000 ppm by weight, and has a pH of 2-6; bringing the NB heat exchanger on whose surface the chemical conversion film is formed into contact with a hydrophilization agent containing a hydrophilic resin and a guanidine compound and/or a salt thereof; and baking the NB heat exchanger subjected to the contacting process, whereby a hydrophilic film is formed on the surface thereof.

Abstract: The invention refers to a method of brazing together thin heat exchanging plates of an iron based base material provided with port holes and a pressing pattern of elevations and depressions over the heat exchanging area of the plates and, if present, also over the distribution area to a plate heat exchanger. The plates are coated with brazing material and are arranged such that contact between elevations and depressions in adjacent plates is obtained prior to the brazing together. The plates are then brazed together at the resultant contact points. Only 5-40%, preferably 10-30%, of the heat exchanging area and the distribution area are coated with brazing material prior to the brazing.

Abstract: A heat exchanger (20) includes an inlet connector (22) having a flat joint surface (23) and an outlet connector (24) having a flat joint surface (25). The heat exchanger (20) also includes a round tube (26). The round tube (26) includes an inlet aperture (28), an outlet aperture (30) and flat surfaces (32, 34) adjacent each of the inlet aperture (28) and the outlet aperture (30). The flat joint surface (23) of the inlet connector (22) is coupled to the flat surface (32) adjacent the inlet aperture (28) and the flat joint surface (25) of the outlet connector (24) is coupled to the flat surface (34) adjacent the outlet connector (24).

Abstract: The present invention relates to a method for manufacturing an air/fluid heat exchanger (1), said method comprising at least the following steps: a) on a first sheet metal plate (2), a plurality of tight folds are formed, said folds acting as fins (3), or, alternatively, the first sheet metal plate (2) comprising a first portion (2a) and a second portion (2b), tight folds (3) are formed only on the first portion (2a); said first sheet metal plate (2) or said first portion (2a) forming a sheet metal plate in the upper position; b) the tight folds (3) are opened on a portion across their height; c) the first sheet metal plate (2) obtained in step b) is placed on a second sheet metal plate (6), said second sheet metal plate (6) forming a sheet metal plate in the lower position, or, alternatively, the first portion (2a) obtained in step b) is folded on the second portion (2b), said second portion (2b) forming a sheet metal plate in the lower position, d) the tight portion of the folds (3) is brazed and the

Abstract: A heat exchanger for heat exchange between a first fluid and a second fluid is provided that includes: a block for guiding the first fluid and the second fluid separately and in a heat-exchanging manner, and a fluid connection for the first fluid. The block comprises a housing provided with a chamber through which the second fluid can flow, and a block end element for the fluid-tight separation of the chamber and the fluid connection. The housing can be provided for connecting the block to the fluid connection. The block end element is not used to connect the block to the fluid connection but rather preferably only the housing. The housing can be thickened accordingly in the region of the block connection. The fixing point for the block end element to the housing and the fixing point for the fluid connection to the housing are at a distance from each other.

Abstract: In supplying flux to a brazing heat exchanger member, a given amount of the flux is stably adhered to brazing portions without interposing any substance which becomes unnecessary for the brazing such as binder. In manufacturing a heat exchanger member, particles containing flux are injected to a surface of a substrate made of aluminum or its alloy at a temperature lower than a melting point of the flux by 30° C. or more to collide against the surface at an average speed of 100 m/sec or higher to thereby mechanically adhere the particles thereto.

Abstract: The invention relates to a process for manufacturing a steel Yankee cylinder (1), where the Yankee cylinder (1) is welded together from individual pre- or finish-machined cylinder sections (8, 9, 10). In this case, the individual cylinder sections (8, 9, 10) are not welded together at the manufacturing location of the cylinder sections (8, 9, 10), but at an assembly location away from the manufacturing location, preferably on the works premises of the customer.

Abstract: A thermosiphon system includes a condenser, an evaporator, and a condensate line fluidically coupling the condenser to the evaporator. The condensate line can be a tube with parallel passages can be used to carry the liquid condensate from the condenser to the evaporator and to carry the vapor from the evaporator to the condenser. The evaporator can be integrated into the tube. The condenser can be constructed with an angled core. The entire assembly can be constructed using a single material, e.g., aluminum, and can be brazed together in a single brazing operation.

Abstract: Disclosed is a heat exchanger wherein warping (bending) of an intervening member and a frame is suppressed when the intervening member and a wall portion of the frame member having different linear expansion coefficients are welded with each other. A method for manufacturing the heat exchanger, a semiconductor device wherein warping (bending) of an intervening member and a frame is suppressed, and a method for manufacturing the semiconductor device are also disclosed. Specifically disclosed is a heat exchanger wherein a fin member provided with a plurality of fins forming flow channels for a refrigerant is arranged within a frame which forms the outer casing. The frame has a first frame member (a first wall portion) to which insulating plates (intervening members) interposed between the frame and heat-generating bodies (semiconductor elements are welded. The insulating plates (intervening members) have a linear expansion coefficient different from that of the frame.

Abstract: Provided is a hot-water heater manufacturing method capable of obtaining stable heat exchange characteristics by applying a moderate contact surface pressure between heating-medium circulating tubes and heater members that constitute a hot-water heater, and capable of improving the reliability by enhancing the joint strength between the heating-medium circulating tubes, with a simple and easy manufacturing process.

Abstract: A heat exchanger and a method for fabricating the heat exchanger are disclosed. The heat exchanger comprises a heat exchanger core that is formed from a plurality of stacked aluminum panels that are joined together via friction stir welding. Each panel in the core is formed from at least two aluminum extrusions that are joined to one another via friction stir welding.

Abstract: A heat exchanger comprises a base portion and a plurality of fins. The fins are disposed in parallel on the base portion. Each fin has an upper margin far away from the base portion. The distance between each upper margin and the base portion is substantially gradually reduced along a first direction. The upper margins sunken to form at least one groove. The groove extends along a second direction which intersects with the first direction. The structure of the heat exchanger can prevent cutting waste filling in the passages between fins and thus block of passages can be avoided.

Abstract: Tube-bundle equipment for heat exchange operations at high pressures and temperatures, under conditions of high aggressiveness of the process fluids, comprising a titanium lining (11) and a series of tubes (1) consisting of at least one layer of zirconium (2), positioned in contact with said fluids, wherein the tube plate on which said tubes are inserted comprises an outer layer (S) of zirconium or an alloy thereof and an underlying layer (5) of titanium welded to the lining of the equipment. Said equipment is particularly used as a heat exchanger, for example as a stripper, in the high-pressure cycle of urea syntheses processes.

Abstract: The present invention relates to a method for manufacturing a flat plate heat pipe, which includes steps of: forming a wick structure layer and at least one wick structure post on the inner surface of a chamber of a pipe, pressing the pipe to become a flattened pipe with the wick structure post being connected therein, connecting a conduit to the chamber, sealing both sides of the flattened pipe, evacuating air inside the chamber through the conduit, filling a working fluid into the chamber, and sealing the conduit. According to this method, a flat plate heat pipe can be made in a simplified manner with increased yield and reduced cost.

Abstract: An automated tool and method for spacing a gap between the anti-vibration bars and the flow tubing in the bend region of a tube bundle of a U-tube steam generator, prior to welding, during manufacture. The tool comprises two toggle clamp elements attached to a scissors assembly, which are actuated by a linear drive motor in line with a force gauge, and coupled to a distance measuring device. The tool is operated by first attaching the toggle clamps respectively to two adjacent anti-vibration bars. A linear drive motor on the tool is then cycled and readouts of force and distance are plotted on a curve to determine the point of contact between the anti-vibration bar and the tube. The computer then automatically cycles the drive motor to adjust the gap to a desired range of position coordinates adjacent the point at which the curve markedly changes slope.

Abstract: The present invention is directed to a fluid conduit assembly. In accordance with one embodiment of the present invention, the inventive fluid conduit assembly includes a fluid conduit having an inlet, at least one outlet and a fluid flow passageway therebetween configured to allow for fluid to be communicated between said inlet and said at least one outlet. The inventive fluid conduit assembly further includes at least one damper disposed within the passageway of the fluid conduit. The damper includes a sealed vent configured to vent gases captured by the damper during a brazing process performed on the fluid conduit when unsealed.

Abstract: A heat exchanger including a metal base formed of a plurality of interfitted elements and fins formed in part from recompressed expanded graphite, wherein the fins are securely connected to the base by placing a deformable edge portion of each fin between each pair of interfitting elements and thereafter compressing the interfitting elements toward one another to deformably retain the edge portions of each fin there between.

Abstract: In a method for producing a heat exchanger tube bundle for a heat exchanger of an electrochemical energy accumulators, heat exchanger channels and an intended profile are incorporated into material strips by deep drawing. A forward-flow distribution aperture is incorporated into a first such material strip from step b) (first heat exchanger plate), and return collecting apertures are incorporated into a second such material strip, forming first and the second heat exchanger plates. The latter are aligned in such a manner that webs of the two heat exchanger plates border each other, and the heat exchanger channels form heat exchanger tubes. The heat exchanger plates arranged in this manner are joined together to form a heat exchanger tube bundle. A corresponding pressure welding apparatus, a heat exchanger tube bundle, a heat exchanger module, a heat exchanger with two or more heat exchanger modules, and an electrochemical energy accumulator with a heat exchanger of this type are also disclosed.

Abstract: A heat dissipation device includes a heat dissipation element and a ceramic main body. The heat dissipation element includes a heat transfer section and a heat dissipation section located on one side of the heat transfer section; and the ceramic main body is directly connected to another side of the heat transfer section opposite to the heat dissipation section by way of welding or a direct bonding copper process, so as to overcome the problem of crack at an interface between the heat dissipation device and a heat source due to thermal fatigue. A method of manufacturing the above-described heat dissipation device is also disclosed.

Abstract: A method includes preparing a bonding surface of a heat dissipating member, applying flux to the bonding surface of the heat dissipating member, and removing excess flux from the bonding surface so that minimal flux is provided. The method also includes preparing a die surface of an electronic device package, applying flux to the die surface, and removing excess flux from the die surface so that minimal flux is provided. The method further includes positioning a preform solder component on the die surface, positioning the heat dissipating member over the die surface and the preform solder component such that the flux layer of the bonding surface is in contact with the preform solder component, and reflowing the solder component using a reflow oven. A heat spreader is also described for use in the process.

Abstract: The present invention relates to a heat exchanger capable of maintaining adhesion between fins and a heat exchange tube while achieving corrosion protection of the heat exchange tube, and a method for producing the heat exchanger. In the heat exchanger which includes a heat exchange tube 4 and a plate-like fin 5 having a through-hole 5a through which the heat exchange tube 4 passes, the plate-like fin 5 has a three-layer structure including a core material layer 52 formed of an Al—Mn based alloy, a brazing material layer 51 that constitutes one end surface and is formed of an Al—Si based alloy, and a sacrificial corrosion layer 53 that constitutes the other end surface and is formed of an Al—Zn—Mg based alloy, and has a tubular portion 5b which is raised from a periphery of the through-hole 5a and uses the brazing material layer 51 as an inner peripheral surface.

Abstract: A heat exchanger may be manufactured using a number of different methods, each having their own benefits and deficiencies. A method of making a monolithic heat exchanger having a plurality of conduits passing through it is provided and comprises the steps of: providing a plurality of successive layers of a material to be remelted and energy beam remelting predetermined regions of each layer in accordance with a predetermined design. The energy beam remelting of each layer is performed prior to the addition of a successive layer. The regions of each layer which are subjected to energy beam remelting form solid structures within the layer, and the energy beam remelting of each layer fuses the remelted regions of each layer to the remelted regions of the preceding layer. This results in the manufacture of a three-dimensional monolithic unit. The heat exchanger is manufactured to have a surface area density of at least 5000 m2/m3 and a mean average porosity of at least 0.6.

Abstract: Methods for manufacturing brazed aluminum heat exchangers involved in boiling and condensing, including a high performance nucleate boiling surface bonded with the walls of fin-less boiling passages. One method includes providing a first heat exchanger core subassembly including a first joinable end, at least one cooling and one boiling passage, and a first partial finless passage arranged at the joinable end. A second heat exchanger core subassembly is provided similar to the first including a second joinable end. The first and second heat exchanger core subassemblies are brazed. The first joinable end is affixed, preferably by welding, to the second joinable end and the first partial finless passage is affixed to a second partial finless passage to form a coupled finless passage, and thereby a heat exchanger core.

Abstract: An exhaust gas heat exchanger, in particular for a motor vehicle, is provided that includes at least one diffuser for feeding and/or discharging an exhaust gas flow; an exchanging region comprising exchanging tubes which extend in an axial direction and which are connected to a base at one end; a housing through which a cooling agent can flow and which is made of a material that is non-resistant to high temperatures, in particular plastic or aluminum. The aim of the invention is to provide an exhaust gas heat exchanger that is simply constructed and inexpensive to produce. This is achieved in that a connecting element is partly embedded in the housing in order to secure the connecting element to the housing, the connecting element being bonded to the base in a first bonding region, said base being bonded to the diffuser in a second bonding region.

Abstract: An automated tool and method for spacing a gap between the anti-vibration bars and the flow tubing in the bend region of a tube bundle of a U-tube steam generator, prior to welding, during manufacture. The tool comprises two toggle clamp elements attached to a scissors assembly, which are actuated by a linear drive motor in line with a force gauge, and coupled to a distance measuring device. The tool is operated by first attaching the toggle clamps respectively to two adjacent anti-vibration bars. A linear drive motor on the tool is then cycled and readouts of force and distance are plotted on a curve to determine the point of contact between the anti-vibration bar and the tube. The computer then automatically cycles the drive motor to adjust the gap to a desired range of position coordinates adjacent the point at which the curve markedly changes slope.

Abstract: A device forming a chemical reactor including a first circuit configured to form a chemical reactor, wherein the first circuit includes plural channels, wherein flow at least two chemicals intended to react with one another, wherein the channels have a three-dimensional structure including bends and junctions forcing the fluid to change direction, and a second heat exchange circuit including multiple channels, wherein a heat transfer fluid flows, positioned as close as possible to the channels wherein the reaction occurs.

Abstract: A method of manufacturing a heat exchanger having a brazed core with parallel tubes separated by and contacting centers that extend parallel to the tubes. The method utilizes a brazing fixture that enables the core to expand during brazing due to thermal expansion of the tubes and centers and maintains tube to center contact as the core shrinks due to melting of the braze alloy. The resulting brazed core has a post-brazed tube spacing pattern that facilitates assembly of the brazed core with headers of the heat exchanger.

Abstract: A heat exchanger suitable for cooling exhaust gases and a method of making same are disclosed. The heat exchanger includes an outer casting member having first and second ends and forming a housing and a plurality of channel members forming alternating first and second flow channels for the flow of an exhaust gas through the first flow channels and coolant through the second flow channels. The channel members form a core having first and second ends, this core being mounted in the casting member. A first flange is fixedly attached to a first end of the core so as to form a sealed joint. A second flange is fixedly attached to the second end of the core so as to form another sealed joint. The first and second flanges are each coupled by fasteners to their respective ends of the casting.

Abstract: A method of making a core of, or a micro-channel heat exchanger includes making constructs from wire and sheet material. The constructs are then stacked together according to the desired orientation of the channels for the core. The stacked constructs are then bonded together to form the core.

Abstract: An LED heat sink and a manufacturing method thereof are disclosed. The LED heat sink includes a main body having a heat receiving section and an extended heat transfer section. The heat transfer section is externally provided with a plurality of receiving grooves for correspondingly connecting with a plurality of radiating fins. The LED heat sink manufacturing method includes the steps of molding a main body using a half-molten metal material and cooling the main body, so that the cooled main body is connected with a plurality of radiating fins to form an integral unit. With the LED heat sink manufacturing method, it is able to manufacture an LED heat sink having a relatively complicated radiating fin structure or being formed of two or more types of materials, and to largely reduce the time, labor and material costs of the LED heat sink.

Abstract: A heat exchanger comprises a first plate and a second plate. A coolant flow passage is formed by brazing the first plate and the second plate by use of a first brazing filler metal. A pipe is brazed between a first groove portion provided in the first plate and a second groove portion provided in the second plate by use of a second brazing filler metal. A pair of first flanges provided contiguously with the first groove portion. Each of the first flanges includes an inner surface. A pair of second flanges provided contiguously with the second groove portion. Each of the second flanges includes an inner surface. At least one of the inner surfaces of the first flanges and the inner surfaces of the second flanges is covered with the second brazing filler metal. The first and second flanges are held by jigs upon brazing of the pipe.

Abstract: A manufacturing process of a heat-exchange assembly of a water heater bottom cover is disclosed.

Abstract: A cold plate apparatus is provided which includes a tube and a casted heat sink member. The tube includes a first metal and first and second ends, with a heat transfer region disposed between the ends. The heat sink includes a second metal that surrounds the heat transfer region of the tube, with the first and second ends of the tube residing outside of the heat sink. The second metal has a lower melting point than the first, and the metals reacted peritectically such that a metallurgical bond exists between the tube and the heat sink. The metallurgical bond includes an alloy layer that was formed during casting of the heat sink member. A thickness of the alloy layer was minimized during casting of the heat sink member to enhance the heat transfer characteristic of the metallurgical bond.

Abstract: A tube matrix and the corresponding method of joining a plurality of tubes to a base plate to create the tube matrix. The tube matrix has a base plate from which a plurality of parallel tubes extend. The base plate has holes formed though it to receive the tubes. The tubes are placed into the holes on the base plate. The tubes may have end flares that abut against the base plate and prevent the tubes from completely passing through the base plate. Once the tubes are in place in the holes of the base plate, the tubes and base plate are welded together with individual laser welds. The laser welds enable a very dense matrix of tubes to be welded to the base plate without damaging or obstructing the tubes.

Abstract: A method for connecting two components in a fluid-tight manner for producing a fluid-tight unit is provided. The method includes a step of providing at least one first component that is solder-plated on one side, wherein the first component has a cutting burr on a side facing away from the solder-plated surface. The method further includes a step of connecting, in particular soldering, the first component to a second component in a fluid-tight manner, in order to produce the fluid-tight unit, wherein the solder-plated surface of the first component faces the second component when connecting the first and second components in a fluid-tight manner.

Abstract: A modular heat exchanger suitable for automotive applications, and methods for forming the modular heat exchanger. The modular heat exchanger construction incorporates a monolithic brazed core assembly composed of flat-type cooling tubes and sinusoidal centers. The required positional tolerances of the tubes for mating with the remainder of the heat exchanger are maintained within the brazed core assembly by minimizing core shrinkage resulting from the brazing operation during which the tubes are brazed to the centers.

Abstract: A semiconductor device includes a semiconductor chip having an electric circuit; and a cooling device including at least one channel serving as a flow path through which coolant flows, an external surface including projections, and a metallic layer formed over the external surface including the projections. In the semiconductor device, the projections of the external surface of the cooling device are brought into contact with a first surface of the semiconductor chip via the metallic layer such that the semiconductor chip is cooled by allowing the coolant to flow through the channel formed in the cooling device.

Abstract: A heat exchanger suitable for cooling exhaust gases and a method of making same are disclosed. The heat exchanger includes an outer casting member having first and second ends and forming a housing and a plurality of channel members forming alternating first and second flow channels for the flow of an exhaust gas through the first flow channels and coolant through the second flow channels. The channel members form a core having first and second ends, this core being mounted in the casting member. A first flange is fixedly attached to a first end of the core so as to form a sealed joint. A second flange is fixedly attached to the second end of the core so as to form another sealed joint. The first and second flanges are each coupled by fasteners to their respective ends of the casting.

Abstract: A board-shaped heat dissipating device includes a board body having a plane face with a recess formed thereon, a heat conducting element fitted in the recess, at least one groove formed on any one of the board body and the heat conducting element, and at least one heat pipe pressed into the groove to flush with an open side of the groove. After the heat pipe is pressed into the groove and the heat conducting element is firmly fitted in the recess, portions of the heat conducting element that are higher than the plane face are removed through a cut operation, so that the heat conducting element is flush with the plane face of the board body to reduce the space occupied by the heat dissipating device. With the above arrangements, the problem of thermal resistance can be avoided and upgraded overall heat dissipation efficiency can be achieved.

Abstract: The present invention relates to a method for braze-welding a fixing plate and a flow channel cap in a heat exchanger, and to a heat exchanger produced by same.