Abstract: A heat sink includes a base, a set of fins mounted to the base and a plurality of fixing portions, wherein the fixing portions extend from a surface of the base and the set of fins are mounted on an opposite surface of the base. The heat sink is secured to a printed circuit board with at least one heat generating component through the fixing portion of the base. The heat sink is improved by forming one or more slots at lateral sides of the base such that one or more deformable portions can be defined on the base. Thus, the deformable length of the base is increased and the heat stress is relaxed.

Abstract: A cooling unit for cooling in particular power semiconductors contains a distributor for guiding liquid across a surface to be cooled. The distributor comprises an inlet manifold (8) and outlet manifold (9), whereby the inlet and outlet manifolds are connected through a flow cell, which has a main flow channel (50). The main channel is formed as a meandering sequence of channel segments (61,62,63,64). It has been found, that the transfer of heat by the liquid in the main flow channel can be improved by introducing a bypass flow channel (71,72,73) which allows the flow of liquid from the cell inlet to the cell outlet, wherein the bypass flow channel interconnects the channel segments of the main flow channel.

Abstract: A multi-fluid heat exchanger and a method of making the same are provided wherein a cut portion is provided in an elongated header of the heat exchanger at a location between a pair of baffles in the elongated header and first and second cores of the heat exchanger. At least a majority of the transverse cross section of the elongated header is removed at the cut portion to allow for relative thermal growth of the first and second cores.

Abstract: Structured thermal transfer article comprising a plurality of metal bodies and a plurality of interstitial elements disposed between and connecting the plurality of metal bodies to one another. The metal bodies comprise an inner portion comprising a first metal and an outer portion comprising an alloy comprising the first metal and a second metal. The interstitial elements comprise the alloy of the outer portion.

Abstract: A heat sink (10) for removing heat from heat-generating devices includes a plurality of fins (12) interconnected together by a fastener (20) extending therethrough. Each fin comprises a main body (14) and a flange (16) bent from an edge of the body. The main body has a thickness and defines a through hole (141, 142, 143) therein. The fastener comprises a plurality of alternating bars (200) and positioned portions (212). Each positioned portion has a same thickness as the main body and is accommodated in the through hole. Each bar is sandwiched between two adjacent main bodies, for fixing the fins in position and preventing the fin from sliding along a length direction of the fastener. The bar has a width larger than a diameter of the through hole.

Abstract: A heat sink for distributing a thermal load is disclosed that includes two or more base plates connected and oriented around a central axis of the heat sink, at least one base plate receiving the thermal load, each base plate having thermal transport paths, the thermal transport paths oriented among the base plates so as to have the capability of accepting thermal transports having a plurality of lengths for thermal distribution between at least two base plates, heat-dissipating fins connected to each base plate, the heat-dissipating fins spaced apart in parallel and extending from each base plate towards the central axis of the heat sink, and a thermal transport connected between the base plate receiving the thermal load and at least one other base plate so as to distribute the thermal load among the base plates of the heat sink.

Abstract: A support device for supporting a plurality of elongated members. The support device having a longitudinally extensive strip having a plurality of sets of transverse corrugations located at successive longitudinal locations along the strip. Each set of transverse corrugations forming a plurality of elongated member engaging zones extending laterally outwards from both faces of the strip to engage the elongated members in the tube bundle on opposite sides of a tube lane. The support device is useful to support elongated members in a bundle and to mitigate the possibility of damage from flow-induced vibration in elongated members.

Abstract: A method and incorporated heat sink that is cooled both thorough air flow and liquid circulation is provided. The heat sink is disposed close to electronic components and used for their cooling. It comprises a finned structure positioned such that air can easily pass though it; a heat source plate disposed thermally in direction of heat flow to one side of the finned structure such that the heat source plate is in thermal communication with the finned structure fin base and fin tips, and a second plate also disposed at an opposing end of the finned structure in thermal communication both with finned structure fin base and fin tips. The heat sink also includes fluid re-circulator disposed at least partially in the plates for circulating fluids though the plates and around said finned structure such that both fin tips and fin base is cooled.

Abstract: A heat exchanger including a collecting tank having an outwardly extending flange around an edge, a tube plate having a connection edge, tubes having ends extending into openings in the tube plate, and an intermediate plate having an edge lying against the connection edge of the tube plate. The connection edges of the intermediate plate and the tube plate are both mechanically connected to the flange of the collecting tank. Pins in the corners of one of the tube plate and the intermediate plate secure the tube plate and intermediate plate together. The connection edge of the plates include protrusions bendable onto the edge flange of the collecting tank.

Abstract: The present invention relates to a heat exchanger for transferring heat from one fluid to another fluid, comprising a plurality of metallic tube continuously formed into four discrete helically wound coils, each coil having at least four turns, the coils being spatially placed such that axis of all the four helical coils of each bank are substantially in one common plane, the axis of each helical coil is at an angle of 90° to the adjacent helical coil, wherein number of banks is from 2 to 10 and ratio of diameter of the helical coil to the diameter of the tube is at least 10:1.

Abstract: To reduce pressure loss on a heat-exchanger fluid while downsizing a heat exchange and reducing the production cost of the heat exchanger without impairment of the heat transfer performance of the heat exchanger by forming a fluid channel in surfaces of thin metal plates such as stainless steel plates through the use of an etching technique or the like and by improving the shape of the fluid channel. In a heat exchanger in which a plurality of heat exchanger fins are provided in thin metal plates by using an etching technique or the like and a fluid channel for a heat-exchanger fluid is formed between the two opposed thin metal plates by alternately stacking the thin metal plates, the area of the fluid channel, through which the fluid flows between the heat exchanger fins, is made substantially uniform by forming the heat exchanger fins so as to have a curved cross-sectional shape from the front end thereof to the rear end.

Abstract: A light weight hybrid heat exchanger core possessing low density and improved thermal conductivity is disclosed. The hybrid core is comprised of a plurality of parting sheets and interposed by a plurality of high thermal conductivity, light weight bridging elements and enclosure bars. These core members are comprised of dissimilar materials. The parting sheets and bridging elements are interconnected by a specially tailored joint which forms form a substantially strong, high thermal conductivity bond. In particular embodiments, carbon-based bridging elements are bonded to metallic parting sheets using a brazed joint. The parting sheets, in certain embodiments, may comprise titanium or Ni-based superalloys or carbon composites, while the carbon-based bridging elements may comprise fiber-reinforced composites.

Abstract: A heat dissipation device includes a fin set, a sinuous heat pipe transferring heat to different parts of the fin set, and a base thermally contacting the heat pipe. The heat pipe has a middle U-shaped portion and two L-shaped portions at two sides of the U-shaped portion, respectively. The base is for contacting with a heat generating electronic device and transferring heat from the electronic device to the heat pipe and the fin set. The fin set defines a passageway in a middle of thereof. The U-shaped portion of the heat pipe is received in the passageway of the fin set and thermally engages with the fin set.

Abstract: A heat sink removes heat from an electronic device and comprises a base, a lid. An inner ring of first fins extend radially outwardly first length from an inner circle and extend axially a first height from the top surface of the base, and an outer ring of second fins extend radially inwardly a second length from an outer periphery and extend axially a second height from the top surface of the base. A confining plate extends radially above the fins and is spaced below the bottom surface of the lid whereby coolant fluid flows from an inlet opening of the lid through the center opening of the confining plate and radially outwardly through the fins and upward around the outer edge of the confining plate and into the space above the confining plate to an outlet opening. A nozzle having a throat is disposed above the lid and extends below the lid to the confining plate. A flow diverter extends upwardly from the top surface of the base and into and through the throat of the nozzle.

Abstract: A heat exchanger includes a shell that has an inner chamber defined by an inside wall surface. A tube stack disposed within the inner chamber and includes a plurality of flat elongated tubes that define a first fluid flow path. The tubes each include a wire that is wound around a tube outside surface and that extends in a helical manner along a tube length. When stacked together, the wires of adjacent tubes connect with one another to form an “X” pattern connection that operates to both distance the adjacent tubes and form a second fluid flow path along the outside surfaces of the tubes. The connection between the wires causes turbulent flow in the coolant that improves the heat transfer characteristic of the coolant, and the connection between the wires provides structural support to the tubes in the tube stack to help reduce vibration induced heat exchanger failures.

Abstract: In a heat exchanger, a plurality of heat conductive pipes forming first passages are provided between an outer wall plate and an inner wall plate. Air flows through the first passages. Second passages are formed between the heat conductive pipes. An exhaust gas flows through the second passages. Each of the heat conductive pipes has opposite walls limiting the passage width of the first passage. The walls are formed along involute curves. The second passages are formed by providing adjacent heat conductive pipes along the involute curves.

Abstract: The heat exchange module, intended for a motor vehicle with internal combustion engine fitted with a high temperature cooling system and a low temperature cooling system, comprises at least one row of heat exchange tubes (102) connected to at least one inlet manifold (58, 64, 66) and to at least one outlet manifold (60, 62, 68), these tubes forming a heat exchange surface. It comprises surface distribution means (110, 42, 44) that are used to divide the heat exchange surface into a high temperature heat exchange section and a low temperature heat exchange section. The module preferably comprises a high temperature fixed section (52), a low temperature fixed section (54) and an intermediate section that can be allocated wholly or partly to the sections (52 and 54).

Abstract: A method for fabricating a heat pipe structure which includes a tubular member, and a woven wick structure having a base portion formed at one end of the tubular member and a surrounding portion extending from the base portion for attaching to an interior wall of the tubular member. Therefore, an end portion of a heat pipe can be used to contact a heat source for dissipation to provide more efficient dissipation and prevent from limitation of use.

Abstract: A cooling apparatus has a low profile extrusion with a plurality of micro tubes extended there through. The low profile extrusion is placed into thermal connection with heat producing components. A heat transfer fluid removes heat via an adiabatic process.

Abstract: A pressure tank includes a liner separated into a cap and a main body. A shell covers the outer surface of the liner. The shell is formed of a fiber reinforced plastic. A heat exchanger is arranged in the liner. A header is connected to the heat exchanger. The heat exchanger is supported on the liner by fastening the header to the cap or the main body.

Abstract: A battery powered steerable electric drive unit for detachable connection to a conventional wheelchair having a collapsible wheelchair frame comprises: a support releasably connectable to the wheelchair frame by an adjustable releasably lockable attachment mechanism; a drive assembly pivotably (steerably) mounted on the support and including a ground-engaging wheel and a battery powered electric motor for dirving the wheel; a solenoid-operated brake engageable with a disc-like surface of a pulley in the drive mechanism for the wheel; a detachable steering column having a handle mounted thereon and pivotably and rotatably mounted on the support; an adjustable steering mechanism mounted on the support and connected between the steering column and the drive assembly to effect steering when the steering column is rotated about its longitudinal axis; and an electric controller comprising an off-forward-reverse switch, a speed control switch and a brake switch mounted on the handle, and further comprising a solid-s