Abstract: A parallel flow heat exchanger is disclosed having heat transfer tubes with a plurality of relatively small channels, which are aligned in a parallel manner, and wherein the heat transfer tubes are in fluid communication with at least one manifold structure, are received in manifold wall openings and are attached to the manifold structure by brazing process The manifold walls and/or the tubes are modified to minimize the likelihood of brazing material plugging or at least partially blocking any of the plurality of channels In one feature, the openings in the manifold structure are formed by deforming the material of the manifold structure outwardly In another feature, the edges of the heat transfer tubes may be formed such that the outermost end channels within each heat transfer tube extend farther inwardly than do the central channels Various design configurations are disclosed

Abstract: A cooling system includes a housing having a compartment and an oil inlet. A transformer unit is disposed in the compartment and includes a plurality of large power transformers. A heat-dissipating unit is disposed in the compartment and includes a fluid inlet port member, a fluid outlet port member, a heat conductor, and a plurality of heat exchange pipes. The heat conductor is in thermal contact with the heat exchange pipes. The heat exchange pipes are arranged along a first direction. Each of the heat exchange pipes extends along a plane that is not parallel to the first direction. A cooling oil is introduced into the compartment through the oil inlet such that the transformer unit, the heat conductor, and the heat exchange pipes are immersed in the cooling oil.

Abstract: A method for producing heat exchanger tubes involves applying a surface coating to the tube through which a fluid medium flows and which has a number of cooling fins arranged on an outer wall. The method comprises applying a surface coating to an inner wall and the outer wall of the tube, the inner wall and the outer wall comprised of structural steel, the surface coating comprising copper, nickel, cobalt, chromium, a nickel alloy, a chromium alloy, a copper alloy, a cobalt alloy or stainless steel. The method further comprises soldering the number of cooling fins to the outer wall. The surface coating is configured to facilitate direct soldering of the number of cooling fins to the outer wall of the tube and to provide the inner wall with corrosion resistance to the fluid medium in the tube.

Abstract: A heat exchanger includes a first generally vertical header and a second generally vertical header and a generally vertical array of a plurality of generally flat heat exchange tubes extending in a horizontal direction therebetween. Each heat exchange tube has a plurality of channels extending longitudinally in parallel relationship from its inlet end to its outlet end, each channel defining a discrete refrigerant flow path. A plurality of fins extends between parallel-arrayed tubes. To facilitate drainage of the collected condensate from the external surfaces of the flat heat exchange tubes, the tubes are aligned at a slight angle with respect to the horizontal so that the trailing edge of each tube is positioned lower than the leading edge of each tube. To further assist in the condensate drainage, the trailing edge of each of the fins may extend beyond the trailing edge of the associated heat transfer tubes and a lower extension lip may extend downwardly from the trailing edge of each of the fins.

Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided that include multichannel tube and fin configurations designed to promote the release of condensate. The multichannel tubes may have a curved, round, or airfoil shape, and may be used with plate or corrugated fins. In certain embodiments, corrugated fins may be brazed to multichannel tubes and then trimmed to form individual fin structures. Double header configurations also may be employed.

Abstract: Tubing having internal fins projecting inward from the tube wall, each fin having an external surface that includes multiple acute interior angles or crevices that may form nucleation boiling sites, heat exchangers comprising such tubing, and methods of making same. Acute angles, crevices, or elongated slits may be formed in the sides, center, or both, of the fins or between the fins and the tube wall, and convex rounded surfaces may be provided therebetween. Fins may be parallel to the tube centerline or helically wound. Tubing may be expanded with a bullet which may form an interference fit with external fins, may modify the fins to create more effective nucleate boiling cavities, or both.

Abstract: A lightweight underwater cooling assembly with a high cooling capacity comprises: an assembly of heat exchanger tubes (4) arranged in a submerged refrigerant boiling chamber (5); a thin walled water cooled condenser (6) in which refrigerant vaporized in the boiling chamber (5) is condensed and from which condensed refrigerant is recirculated into the boiling chamber (5); and a thin walled pressure compensating membrane (9) which maintains the fluid pressure (˜psea) within the boiling chamber (5) and condenser (6) substantially similar to the fluid pressure (psea) of the (sea) water surrounding the submerged refrigerant boiling chamber (5).

Abstract: The present invention is directed to a method for manufacturing a heat exchanger in which a Zn thermally sprayed layer is formed on a surface of an aluminum flat tube 2 and then the Zn thermally sprayed tube is combined with an aluminum corrugated fin and brazed to the fin. The Zn thermally sprayed tube 2 is subjected to a Zn diffusion treatment by heating the tube before the brazing to diffuse the Zn in the tube surface, and thereafter the brazing is performed. The heat exchanger manufactured in this way can assuredly have a stable sacrifice corrosion layer and is excellent in corrosion resistance. The heat exchanger can be manufactured efficiently without major facility changes at low cost.

Abstract: The invention relates to a metallic heat exchanger tube with fins which run helically around the outside of the tube, are molded integrally therefrom and are of continuous design and the fin base of which protrudes substantially radially from the tube wall, and with primary grooves located between respectively adjacent fins. At least one undercut secondary groove is arranged in the region of the groove base of the primary grooves. Said secondary groove is delimited toward the primary groove by a pair of mutually opposite material projections formed from material of respectively adjacent fin bases. Said material projections extend continuously along the primary groove. The cross section of the secondary groove is varied at regular intervals without having an influence on the shape of the fins. There is a spacing between the opposite material projections, said spacing being varied at regular intervals, as a result of which local cavities are formed.

Abstract: Systems and methods for improving the efficiency of gas-fired power systems that include heat exchange between at least two fluid streams comprise a vertical cold flue assembly comprising a plate fin heat exchanger and having a top and a bottom such that at least one fluid sinks through the top of the cold flue assembly, through the plate fin heat exchanger and sinks through the bottom of the cold flue assembly. An absorption chiller may be in fluid connection with the cold flue assembly and may use at least some waste heat from an exhaust stream to provide energy to produce refrigeration. The absorption chiller directs refrigerant into the cold flue assembly, the refrigerant rises within the plate fin heat exchanger and cools the at least one fluid including air as the air sinks through the plate fin heat exchanger, and the cooled air sinks through the bottom of the cold flue assembly and into the air compressor of the power system.

Abstract: A fin-tube heat exchanger 1 includes a plurality of fins 3 arrayed spaced apart from and parallel to each other so as to form gaps for allowing a first fluid to flow therethrough, and a plurality of heat transfer tubes 2 penetrating the plurality of fins 3 and for allowing a second fluid to flow therethrough. The plurality of heat transfer tubes 2 includes first heat transfer tubes 2A and second heat transfer tubes 2B arranged in a predetermined row direction that intersects the flow direction of the first fluid. The fins 3 have protrusions 5 each disposed between a first heat transfer tube 2A and a second heat transfer tube 2B, for guiding the first fluid toward the first heat transfer tube 2A side and the second heat transfer tube 2B side. The equivalent diameter of the protrusion 5, as viewed in the axis direction of the heat transfer tubes 2, is equal to or greater than the outer diameter of the heat transfer tubes 2.

Abstract: A light source module adapted to a projecting device including a light bulb, a fan, and an air tunnel structure is provided. The fan is located by the light bulb for cooling the light bulb. The air tunnel structure is located respective to the location of the light bulb, for removing the heat generated by the light bulb. The air tunnel structure has a curved inner wall, a plurality of fins, and a tank. The curved inner wall is located inside the air tunnel structure respective to the location of the light bulb. The fins are formed on the curved inner wall for blocking the fragments generated by the explosion of the light bulb. The tank is located by a side of the curved inner wall for carrying the fragments clashing the fins.

Abstract: According to the invention, a heat exchanger is disclosed. The heat exchanger may include a first tube sheet, a second tube sheet, a heat exchange tube, a header, and a coupling. The heat exchange tube may be disposed at least partially between the first tube sheet and the second tube sheet, and may also be made of a first material. The header may be made of a second material. The coupling may include a first end and a second end. The first end may be made of the first material, and the second end may be made of the second material. The first end may be operably coupled with the heat exchange tube, and the second end may be operably coupled with the header.

Abstract: A method for manufacturing a heat sink having heat-dissipating fins and a structure of the same are provided. The method includes the steps of: providing a substrate comprising a center portion and a plurality of extending arms, a gap being provided between each two adjacent extending arms; providing a plurality of heat-dissipating fins, the heat-dissipating fins being inserted into the gaps between the extending arms, each heat-dissipating fin comprising a base piece and two heat-dissipating plates; and bending and pressing each extending arm of the substrate with one of the two opposite side walls of each extending arm abutting against one of the two opposite surface of each heat-dissipating plate. Via the above arrangement, the present invention has an effect of avoiding the heat transfer loss.

Abstract: A finned tube assembly for an air cooled condenser. The finned tube assembly comprises a non-circular core tube and at least one set of fins that are welded directly to the core tube. The core tube can be formed by a plurality of longitudinal transverse sections that are seam welded together. In another embodiment, the invention is a fined tube assembly having an outer surface that is made corrosion resistant by a surface conversion process, such as ferretic nitrocarburization.

Abstract: The invention concerns a metal fin for heat exchanger with tubes, comprising means for increasing heat transfers consisting of diverting conformations (10,11) each arranged upstream and downstream of an aperture (3) when considering the direction (F) of air flow, to force the air to pass either side of said aperture, the upstream (10) and downstream (11) diverting conformations of two superimposed apertures (3) belonging to one same column extending along a determined length so that they substantially rejoin at the plane of extension (P) of offset apertures. (Figure to be published: FIG. 2).

Abstract: A fin (3) of a fin-tube heat exchanger (1) has protuberances (5) each disposed between two adjacent heat transfer tubes (2, 2) and holes 8 (cut-outs) each formed upstream of the protuberances (5). Each of the protuberances (5) has, as an upstream portion adjacent to the hole (8), a wing portion (6) tapering toward an upstream side.

Abstract: The invention relates to a fin for a heat exchanger, comprising a fin element which extends in the flow direction of a first fluid and has a wall face around which the first fluid flows on both sides, wherein at least one flap is provided in the wall face, which flap forms a cutout, through which the first fluid can flow, in the wall face, wherein a first edge of the flap for forming the cutout is arranged spaced apart from the wall face, wherein the flap has a tab face which is inclined with respect to the wall face and terminates at the first edge, wherein the tab face is connected to the wall face via at least one side wall, extending with a curved profile, of the flap, which side wall, starting at the first edge, has a height which decreases in a way which corresponds to the inclination of the tab face.

Abstract: A plug flow reactor having an inner shell 27 surrounded by outer shell 21 and having at least one annular flow passage 35 therebetween can be used to prepare compositions, including polymers. The plug flow reactor also includes inlet port 36, an outlet port 37 and a plurality of exchanger tubes 26 wherein the exchanger tubes are in fluid communication to the at least one annular flow passage. Polystyrene and high impact polystyrene can be prepared using the reactor.

Abstract: A condenser assembly is provided. The condenser includes a first tube-and-fin module having a first flat tube with a first group of microchannels formed parallelly therethrough. The condenser also includes a second tube-and-fin module arranged next to the first tube-and-fin module. The second tube-and-fin module includes a second flat tube with a second group of microchannels formed parallelly therethrough. The condenser further includes a bottom panel having a bottom group of microchannels. The bottom panel is sealingly coupled to the first and second flat tubes at one common end thereof. The bottom group of microchannels extends between and communicates with the first and second groups of microchannels defining a plurality of continuous passages.

Abstract: A heat dissipation assembly includes a heat pipe and a cooling fin set. The heat pipe provides an upright curved section and the cooling fin set provides a plurality of cooling fins to be attached to the curved section. Wherein, the cooling fin set has a curved shape corresponding to the curved section and provides a lateral curved recess for the curved section being capable of fitting with the curved recess precisely due to the sizes of the curved section and the curved cooling fin are controlled effectively and the required tortuosity is obtained during being worked.

Abstract: The present invention provides a heat pipe structure of a heat radiator, which includes two vertically protruded radiating portions and heat-absorbing portions at a bottom of the two radiating portions. The heat-absorbing portions are assembled onto the heat-conducting pedestal. Two turning portions are formed at the intersection of the heat-absorbing portions and two radiating portions. The heat-absorbing portion has a curved shape. The heat-absorbing portions of adjacent heat pipes are misaligned, such that the turning portion of the heat-absorbing portion of one heat pipe aligns with the recessed space of the other heat pipe. A minimum of heat pipe assembly space obtains a maximum heating area, thus greatly improving the heat-radiating effect and reducing the manufacturing cost with better applicability and economic efficiency.

Abstract: An oil cooler for an internal combustion engine, including a housing having at least one channel for receiving oil from an engine's oil reservoir and for returning the oil to the reservoir, and means for facilitating heat dissipation from the circulated oil to the environment. The oil cooler further includes a coupling for connecting the housing to a receiver for an oil filter cover so that the coupling replaces the oil filter cover and exchanges oil with the engine's reservoir.

Abstract: A method of assembling a syngas cooler is provided. The method includes coupling at least one cooling tube within the syngas cooler, wherein the at least one cooling tube includes an inner surface that defines a flow passage therethrough, an opposite outer surface, and at least one cooling fin extending outward from the outer surface, and orienting the at least one cooling tube such that the at least one cooling fin is in flow communication within a syngas flow passage defined in the syngas cooler, wherein the cooling fin facilitates enhancing heat transfer between fluid flowing in the at least one cooling tube and a syngas flow.

Abstract: A high-frequency, low-amplitude corrugated fin for a heat exchanger assembly includes a plate member that extends horizontally and vertically to define a reference plane. The plate member has a plurality of conduit portions, a first and second series of corrugated segments formed in the plate member. The first and second series of corrugated segments undulate generally equidistantly relative to and from the reference plane as viewed in cross-section. The plurality of conduit portions is inter-dispersed throughout the plate member among the first and second series of corrugated segments. Each one of the first series of corrugated segments extends at a first angle relative to horizontal and each one of the second series of corrugated segments extend at a second angle relative to horizontal such that individual adjacent ones of the first and second series of corrugated segments form at least a generally chevron-shaped configuration as viewed in plan view.

Abstract: A heat dissipation device includes a base, a first fin group located above the base, at least one heat pipe connecting the base and the first fin group and first and second fans located at two opposite sides of the first fin group. Each of the first and second fans is oriented with an acute angle to the base. Outlet and inlet of the first and second fans are oriented towards the base and the first fan produces cooling air to blow towards the first fin group and the base and the second fan draws heated air away from the first fin group and the base.

Abstract: A cooling apparatus of an exhaust gas recirculation system includes a first cooling portion, made of a first material, that receives recirculation exhaust gas; and a second cooling portion, made of a second, different material, that receives the recirculation exhaust gas from the first cooling portion and exhausts the recirculation exhaust gas out of the apparatus. A cooling method of an exhaust gas recirculation system includes receiving a recirculation exhaust gas in a first cooling portion made of a first material; cooling the recirculation exhaust gas in the first coolant portion; receiving the recirculation exhaust gas in a second cooling portion made of a second, different material; and cooling the recirculation exhaust gas in the second coolant portion.

Abstract: A heat transfer fin (13) is provided on a heat transfer tube (1) wherein a fluid for exchanging heat with air flows. The heat transfer fin which transfers heat by having contact with air is composed of a metal foam having a pore density of 20 PIP or more.

Abstract: A heat exchanger having an aluminum main body is provided. The aluminum main body has heat exchange medium passages that allow the heat exchange medium to circulate, and fins for heat exchange extending outwards from the surface thereof. A method of fabricating the heat exchanger is also provided. The aluminum main body with heat exchange medium passages is formed by stretching or extrusion. The fins are shaped on the external surface of the aluminum main body through skiving. Since the main body and the fins are integrally formed, no extra combined thermal resistance exists between the fins and the main body, and thus the heat exchanger of the present invention has high heat exchange efficiency. Moreover, the method of fabricating the heat exchanger of the present invention has simple processes, and can ensure consistent product quality, and meanwhile does not use expensive copper tubes, thus reducing the cost effectively.

Abstract: A heat sink has a heat pipe inside of which a working fluid is filled and which is extended by a predetermined length from a heat source in a heat radiation direction, and a radiation fin having a mountain portion and a valley portion formed in a longitudinal direction of the heat pipe, the mountain portion and the valley portion forming a continuous waveform. The radiation fin further has a step portion for fitting and retaining the heat pipe thereinto.

Abstract: A heat dissipating base structure includes a base; a plurality of heat dissipating fins disposed on the base and arranged in parallel to each other, each of the heat dissipating fins being formed with at least a first through hole and a second through hole corresponding to the first through hole; and at least a U-shaped heat pipe having a bending portion and two pipe leg portions extending from two ends of the bending portion respectively. The cross section of the pipe leg portions is smaller than the size of the first and second through holes. Each of the pipe leg portions is fixedly disposed in the first and second through holes at one side thereof respectively, and can move freely in the holes before being fixedly disposed.

Abstract: A heat dissipating apparatus (10) includes a base (20), a plurality of stacked fins (30), and at least a heat pipe (40). The base absorbs heat from a heat-generating component. Each of the fins includes a main body (32), and a plurality of projection members (33) extending from the main body. The projection members of a first fin connect the projection members of a second fin. The projection members form a first heat transfer path for transferring heat from the base to the fins. The heat pipe includes a heat-absorbing portion (42) thermally contacting with the base, and a heat-dissipating portion (44) contacting with the fins. The heat pipe forms a second heat transfer path for transferring the heat from the base toward the fins.

Abstract: An integrated liquid cooling unit comprising a liquid pump and a U-shaped flat tube. An adapter rigidly connects and establishes fluid communication between the pump and the tube creating an integrated unit for cooling an electronic chip via a closed loop. Heat is rejected from the coolant through cooling fins disposed between the legs of the U-shaped tube to passing air being propelled by a blower assembly.

Abstract: A heat dissipating module includes a plurality of heat dissipating fins stacking together in a parallel manner, a plurality of base boards soldering on the heat dissipating fins and a heat transfer duct running through the heat dissipating fins. Each of the dissipating fins has a first portion and a second portion which is formed by bending two sides of the first portion forwards in a vertical manner. The second portion on the same side is coupled to form a coupling surface which is soldered on the base boards. By incorporating the heat transfer duct a firmer heat dissipating module structure is formed.

Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems, heat exchangers, and multichannel tubes are provided which include internal configurations designed to promote mixing. The multichannel tubes include interior walls which form flow channels. The interior walls are interrupted at locations along the multichannel tube in order to provide open spaces between the flow channels where mixing may occur. The mixing that occurs promotes a more homogenous distribution of refrigerant within the multichannel tubes.

Abstract: A heat exchanging coil that has at least one straight length of tube and at least one bend in the tube where fins are attached to the tube with unequal fin densities based upon tube orientation, and the fin density is different for straight lengths of tube than at bends in the tube.

Abstract: A finned tube for the thermal cracking of hydrocarbons in the presence of steam is defined by a tube axis and includes a plurality of inner fins. The fins are inclined at an angle of 20° to 40° in relation to the tube axis and have a flank angle of 16° to 25°.

Abstract: An LED lamp cooling apparatus (10) includes a substrate (11), a plurality of LEDs (13) electrically connected with the substrate, a heat sink (19) for dissipation of heat generated by the LEDs and a pulsating heat pipe (15) thermally connected with the heat sink. The pulsating heat pipe includes a plurality of heat receiving portions (154) and a plurality of heat radiating portions (155), and contains a working fluid (153) therein. The substrate is attached to the heat receiving portions of the pulsating heat pipe and the heat sink is attached to the heat radiating portions of the pulsating heat pipe. The heat generated by the LEDs is transferred from the heat receiving portions to the heat radiating portions of the pulsating heat pipe through pulsation or oscillation of the working fluid in the pulsating heat pipe.

Abstract: A mass and heat exchanger includes at least one first substrate with a surface for supporting a continuous flow of a liquid thereon that either absorbs, desorbs, evaporates or condenses one or more gaseous species from or to a surrounding gas; and at least one second substrate operatively associated with the first substrate. The second substrate includes a surface for supporting the continuous flow of the liquid thereon and is adapted to carry a heat exchange fluid therethrough, wherein heat transfer occurs between the liquid and the heat exchange fluid.

Abstract: The present invention relates to a method and equipment for recovering heat from exhaust gas removed from an industrial process, such as an electrolysis process for the production of aluminium. Heat is recovered by means of an extraction/suction system, where the exhaust gas contains dust and/or particles. The heat is recovered as the exhaust gas is brought into contact with heat-recovery elements. Flow conditions and the design of the heat recovery elements are such that the deposits of the dust and/or particles on the surfaces stated are kept at a stable, limited level. In preferred embodiments, the heat-recovery elements have a circular or an extended, elliptical cross-section and may be equipped with fins or ribs.

Abstract: Devices for cooling and humidifying a reformate stream from a reforming reactor as well as related methods, modules and systems includes a heat exchanger and a sprayer. The heat exchanger has an inlet, an outlet, and a conduit between the inlet and the outlet. The heat exchanger is adapted to allow a flow of a first fluid (e.g. water) inside the conduit and to establish a heat exchange relationship between the first fluid and a second fluid (e.g. reformate from a reforming reactor) flowing outside the conduit. The sprayer is coupled to the outlet of the heat exchanger for spraying the first fluid exiting the heat exchanger into the second fluid.

Abstract: A liquid cooled heat sink includes: a casing having a liquid inlet and a liquid outlet; and a fin unit provided in the casing and having a wave-like structure of a multi-fold sheet that defines a plurality of fluid paths which are aligned in series in a transverse direction relative to the fluid paths. The liquid inlet of the casing is in fluid communication with the liquid outlet of the casing through the fluid paths.

Abstract: A heat sink includes a fin unit (10) and a heat pipe (40) for transferring heat from a heat-generating device to the fin unit. The fin unit includes a plurality of fins (20) parallel to each other. A flow channel (23) is defined between any of two neighboring fins for an airflow flowing therethrough. Each fin defines a through hole (25) having an axis of symmetry which extends along the flowing direction of the airflow. The through hole is for extension of the heat pipe therethrough. A plurality of protrusions (221, 222, 223, 224) extend outwardly from each fin. The protrusions being arranged irregularly around the heat pipe for guiding the airflow flowing to the heat pipe.

Abstract: A method for heating a fluid using a heating tower. The method includes the steps of drawing an air stream into the heating tower through an inlet and passing the air stream over a series of coils. The method for heating a fluid also includes discharging the air stream from the heating tower through an outlet and isolating the inlet air stream from the outlet air stream.

Abstract: A heat dissipation device includes a fin assembly including a plurality of fins and a heat conductive member. Each individual fin includes a main body with one through hole and a sleeve installed in the through hole of the main body. The sleeve has a hole defined therethrough. The heat conductive member has higher heat conductivity than the main bodies of the fins, and is installed into the through hole of the each individual fin via extension through the hole of the sleeve. The main body and the sleeve of the each individual fin are made of different materials so that the sleeve serves as a transition component for facilitating soldering the each individual fin on the heat conductive member and heat conduction from the heat conductive member to the main body of the each individual fin.

Abstract: A cooling fin unit includes a plurality of cooling fins and a heat guide pipe. Each of the cooling fins has a through hole at the main body thereof and the heat guide pipe passes through the through hole respectively. A recess part is provided to indent toward a side of the main body near the outer side of the through hole and the recess part has a receiving space communicating with the through hole. A heat conductive medium, which is received in the receiving space, is heated up to become a state of melting to fill with spots between the outer surface of the heat guide pipe and the respective through hole.

Abstract: A method for manufacturing a heat sink has steps of providing multiple fins and a heat pipe, assembling the fins, mounting a thermal-conductive medium, attaching the heat pipe, heating the thermal-conductive medium, rotating the fins and cooling the thermal-conductive medium. Because the thermal-conductive medium is inserted in the cavities in the fins before the heat pipe extends through the fins, inserting the thermal-conductive medium is easy and convenient.

Abstract: An integrated cooling system for a fuel cell vehicle according to this invention comprises a fuel gas flow field for supplying fuel gas to a fuel cell stack and exhausting the fuel gas from the fuel cell stack through a fuel gas accumulator, and an air flow field for supplying air to a fuel cell stack and exhausting the air from the fuel cell stack through an air accumulator, wherein at least one cooling pipe of the cooling system comprises a plurality of heat-dissipation pins on a circumferential surface thereof.

Abstract: A baseboard system includes baseboard units through which conduits extend carrying heated fluids, and moldings about the free ends of the baseboards, to provide a generally uniform external surface configuration. The moldings are in the nature of conventional moldings made of wood, pressed wood, plastic or the like. The use of the moldings with the baseboards provides an efficient, cost-effective system that produces a uniform appearance and facilitates cleaning.

Abstract: A heat dissipation device (40) includes at least a heat pipe (45) and a plurality of metal fins (43) thermally connected to the heat pipe. Each of the metal fins defines therein an aperture (431). An extension flange (433) extends outwardly from the metal fin and surrounds the aperture. The extension flange defines therein a plurality of slits (435). The apertures and extension flanges of the metal fins are aligned together. The heat pipe is received in the aligned apertures and soldered by a thermal medium material to the metal fins via the aligned extension flanges. During the soldering process, rosin content contained in the thermal medium material can be discharged away via the slits formed in the extension flange.