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WO2000003574A2 - Corps de refroidissement muni d'ailettes transversales - Google Patents

Corps de refroidissement muni d'ailettes transversales Download PDF

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Publication number
WO2000003574A2
WO2000003574A2 PCT/EP1999/004779 EP9904779W WO0003574A2 WO 2000003574 A2 WO2000003574 A2 WO 2000003574A2 EP 9904779 W EP9904779 W EP 9904779W WO 0003574 A2 WO0003574 A2 WO 0003574A2
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WO
WIPO (PCT)
Prior art keywords
rib
heat sink
cooling
sink according
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP1999/004779
Other languages
German (de)
English (en)
Other versions
WO2000003574A3 (fr
Inventor
Joachim Glück
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19830512A external-priority patent/DE19830512A1/de
Priority claimed from DE19841583A external-priority patent/DE19841583A1/de
Priority claimed from DE19841911A external-priority patent/DE19841911A1/de
Priority claimed from DE19842977A external-priority patent/DE19842977A1/de
Priority claimed from DE19852933A external-priority patent/DE19852933A1/de
Priority claimed from DE19900970A external-priority patent/DE19900970A1/de
Application filed by Individual filed Critical Individual
Publication of WO2000003574A2 publication Critical patent/WO2000003574A2/fr
Publication of WO2000003574A3 publication Critical patent/WO2000003574A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K25/00—Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components
    • H10W40/037—
    • H10W40/226—
    • H10W40/228—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • the invention relates to a heat sink for cooling elements, in particular semiconductor components, motors and units, consisting of a base profile and cooling fins connected thereto, the cooling fins being connected in a heat-conducting manner transversely or obliquely to the extrusion direction of the base profile with the base profile.
  • the cooling of semiconductor components in particular is usually carried out by means of air, the surface of the cooling fins being enlarged as much as possible.
  • the elements that are to be cooled are encased in a base profile, on which the cooling fins, which offer this large surface, then sit. So that one good heat transfer between the cooling fins and the base profile is ensured, both are in many cases in one piece, for example made from an extruded profile.
  • Such an extruded profile is extremely complex, however, so that in many cases the base profile and cooling fins also have to be produced separately and assembled later.
  • the cooling fins are arranged in the extrusion direction of the basic professional and joined together.
  • the cooling ribs have a continuous longitudinal groove and are plugged or clipped onto a rib base on the base profile with this longitudinal groove.
  • the material's own elasticity is used, whereby a connection between the cooling fins and the fin bases can not be so close. This leads to higher thermal resistances, which limits the maximum cooling capacity.
  • a corresponding heat sink is described in DE-PS 35 18 310, the base profile having main grooves on its surface, between which there are intermediate grooves.
  • a main groove and an adjacent intermediate groove form a rib which can be deformed in the direction of the axis of the main groove.
  • This is intended to clamp a heat sink in the main groove.
  • the caulking is done by deforming parts of the base profile, whereby a chisel has to be inserted into a V-groove and presses the material of the base professional against the cooling fins.
  • rib bases and grooves in the base profile is subject to tooling restrictions in the case of extrusion tools.
  • the spacing of the grooves cannot be reduced arbitrarily without reducing the groove depth.
  • the distance between the main grooves and rib bases determines the distance between the cooling fins.
  • the spacing of the cooling fins cannot be changed for a given basic profile and defines the cooling capacity.
  • the present invention has for its object to develop a heat sink and a method for its production, in which these disadvantages are eliminated.
  • the production of multi-part heat sinks should be simplified and a high degree of flexibility and adaptation to thermal requirements should be achieved.
  • the solution to this problem is that the cooling fins are connected to the extrusion direction of the base professional with the same.
  • the cooling fins are not clamped or caulked in longitudinal grooves, but are used transversely or obliquely to the pressing direction of the base profile. This makes it possible to produce heat sinks with narrow fin spacings that cannot be achieved by the above method.
  • the rib spacing can be largely adapted to the requirements in terms of thermal engineering.
  • the invention allows both extruded cooling fins of several millimeters in thickness and cooling fins made of heat-conducting sheet metal of a few tenths of a millimeter in thickness to be connected to the same basic profile.
  • base profiles and heat sinks made therefrom of DE-PS 35 18 310 a Have stronger long-heat flow because the grooves hinder the flow of cross-heat.
  • the transverse heat flow and the heat distribution in the base profile are improved by the transverse cooling fins. In individual cases, this leads to a reduction in the required thickness of the base profile.
  • the cross and longitudinal flow can be coordinated with each other to the required extent by adapting the cross sections of the base profile and the cooling fins.
  • heat sinks of any width can be produced. This is important because the air heats up particularly strongly with long heat sinks at the end of the ribs and the cooling effect drops at the end of the heat sink. Broader but shorter heat sinks are therefore more efficient.
  • long heat sinks can also be produced by placing several base profiles in parallel. The transverse ribs take on the task of connecting elements. This simple production of large heat sinks helps to avoid, for example, welding-related distortion after the weld seam has cooled and reworking.
  • the efficiency can be particularly easily improved by leaving a wide gap between two base profiles, which is bridged by the cooling fins, so that cooler air can be drawn in through the gap on the back of the base profile.
  • the grooves of the base profiles can be used to produce particularly compact heat sinks.
  • the invention relates to heat sinks which are designed such that they consist of at least two separate base profiles for mounting the electrical components, which are spaced apart and connected to one another by means of a plurality of cooling fins.
  • the air flows onto the cooling fins in the middle between two base plates.
  • a cover plate over the rib tips acts as a bump wall and divides the flow.
  • the air flows laterally out of the heat sink in different directions.
  • the cold ambient air is only heated over half the length of the heat sink until the current flows out on one of the two sides.
  • the cooling capacity is therefore twice as large as when using a heat sink half length.
  • the fan arrangement between the two basic profiles and the air outlet on both sides corresponds to a parallel connection of two half-length heat sinks.
  • the base plate of the heat sink in another embodiment has closely adjacent insert grooves. These form thin caulking ribs on the base plate. This allows the thinnest cooling plates to be connected to the base profile without thickening the cooling plate at the edge.
  • the training is equally suitable for the attachment of cooling fins and cooling sheets transversely to the pressing direction of base profiles as well as for attachment in the longitudinal grooves of the base profile or base plate.
  • the cooling plates have an L-shaped or T-shaped design along their connecting edge with essentially the width of the insert groove.
  • the caulking ribs are generally reprinted to the horizontal and caulked by means of chisels against the top of the L-shaped or T-shaped design of the cooling plate or the cooling fin.
  • an auxiliary groove with a lower depth is arranged in the base plate.
  • the insert groove and auxiliary groove in turn form a thin caulking step.
  • This embodiment is preferred if the connecting edge of the cooling fins has a T-shaped configuration or if the cooling fins are caulked which are to be connected to the base plate transversely to the insert grooves.
  • the designs are equally suitable for conventionally extruded cooling fins as well as for the thinnest cooling plates with bevels or notches with an essentially L-shaped or T-shaped design of the connecting edge.
  • the base plate has fins.
  • the cooling rib or the cooling plate has an essentially L-shaped shape across the width of the base plate and with a development essentially corresponding to the surface contour of the ribs of the base plate.
  • the moldings of the cooling fin which are close to the ribs of the base plate are connected by caulking on all sides against the surfaces of the ribs of the base plate.
  • cooling rib and base plate A further connection possibility of cooling rib and base plate consists in that the rib base of the cooling rib has two legs which project substantially laterally and lead into the main grooves, which are attacked directly by chisels and the respective main groove of the base plate is caulked under plastic deformation.
  • the advantage is that the chisels press the cooling fins in the direction of the base plate and into the main grooves. Due to the high surface friction on the groove walls and the internal plastic deformation of the legs against the groove walls and the groove base of the main groove, the contact area between the rib legs and the base plate increases significantly by a factor of 2 to 5 compared to the previous methods. Particularly in the case of thin-walled rib legs, the thermal resistance between the base plate and rib legs improves considerably as a result.
  • heat sinks additionally have an edge-side rib spacing profile with insert grooves provided on the side of the cooling fins, into which the free ends of the cooling fins protrude and are fixed in place laterally supported.
  • inclined cooling fins are aligned parallel to one another through the insert grooves and, at the same time, connected to one another at the free ends, so that the cooling fins are no longer deformed when the heat sink is machined.
  • the rib spacing profile serves as an edge closure to form a flow channel between the cooling ribs of the heat sink. If the free ends of the cooling fins are clamped in the insert grooves of the rib spacing profile and thereby achieve good heat transfer into the rib spacing profile, it is advantageous to enlarge the outer surface of the rib spacing profile in order to achieve an additional cooling effect. This is done for example by corrugation or a plurality of adjacent grooves on the outer surface of the rib spacing profile.
  • the rib spacing profile has side legs on both sides parallel to the cooling ribs. These form part of the side wall of the heat sink.
  • rib spacing profiles have interlocks on both sides or, for example, a tongue and groove connection to the outer cooling ribs or the rare legs of U-shaped base profiles, inclined outer cooling ribs or the side legs are made by installing a Rib spacing profile either pulled towards each other or spread apart, thereby precisely defining their spacing.
  • Another advantage is the screw channels integrated into the rib spacing profile, which are open or closed on both sides. Their distance is precisely determined by the shaping cross section of the press tool. Only a slight crown on the surface of the rib spacing profile can influence the spacing slightly. The achievable accuracy of the distance between the screw channels is significantly improved compared to the tolerances of previous designs.
  • Figure 1 is a schematic perspective view of a heat sink according to the invention.
  • FIG. 2 shows a schematic perspective illustration of a heat sink according to the invention with two base profiles which are connected to one another by means of the cooling fins;
  • FIG. 3 shows a further schematic perspective illustration of a heat sink according to the invention with cooling fins on both sides;
  • FIG. 4 shows another schematic perspective
  • FIG. 5 shows another schematic perspective
  • FIG. 6 shows a schematic perspective illustration of a heat sink with a stepped base profile
  • FIG. 7 shows a further schematic perspective illustration of a heat sink according to the invention with three projections on the base profile
  • FIG. 8 shows a side view of a further exemplary embodiment of a heat sink with a T-shaped base profile and projecting cooling fins
  • FIG. 9 shows a schematic illustration of stamped cooling ribs and possible rib cross sections and a matching basic profile
  • Figure 10 shows a cross section through a heat sink with different designs of rib thickening and two comb-like chisels
  • FIG. 11 shows a schematic illustration of a heat sink according to the invention in a process stage of its manufacture
  • FIG. 12 shows a heat sink according to the invention according to FIG. 11 in a perspective illustration after a first method step in its manufacture
  • FIG. 13 shows a further schematic illustration of a heat sink according to the invention after a process step in its manufacture
  • Figure 14 is a perspective view of a cooling fin for two opposing base profiles during a process step of their caulking
  • FIG. 15 shows a further perspective illustration of a heat sink according to the invention during some process steps in its manufacture
  • FIG. 16a shows a schematic longitudinal section through a heat sink according to the invention with three different impressions of the caulking iron on the rib formations, on the left before, on the right after caulking;
  • Figure 16b shows a section through the heat sink according to Figure 16a along line XVI-XVI;
  • Figure 17 is a perspective view of a heat sink according to the invention with sheet metal fins;
  • Figure 18 is a schematic perspective view of the rib thickening of a sheet metal rib
  • FIG. 19 two further schematic perspective representations of rib thickening of a sheet metal rib
  • FIG. 20 shows a long section through a cooling fin and a base profile
  • FIG. 21 shows a side view of a cooling fin and matching base profile with different fin bases
  • Figure 22 is a schematic side view of a heat sink
  • FIG. 23a shows a side view and a top view of a heat sink and the schematic illustration of a method step in the production
  • Figure 23b is a plan view of the heat sink according to Figure 23a;
  • FIG. 24 shows a schematic perspective illustration of a sheet metal rib and a base profile before assembly
  • FIG. 25 shows a perspective illustration of a single cooling fin with a base profile recess and a plurality of edged fin formations
  • FIG. 26 shows a schematic perspective illustration of an individual cooling fin with laterally protruding rib shapes
  • 27a and b show a longitudinal and a cross section through a heat sink and the schematic representation of various methods of manufacture
  • FIG. 28 shows a perspective illustration of a heat sink according to the invention with cooling fins made from a strip plate
  • FIG. 29 shows a heat sink according to the invention in a perspective representation made of a strip plate as a needle cooling body
  • FIG. 30 shows a further heat sink according to the invention in a perspective view with cooling fins made of a strip plate
  • FIG. 31 shows a top view and a side view of a cooling fin with cooling fin exclusions
  • FIG. 32 shows a schematic perspective illustration of a heat sink and two indicated fans
  • Figure 33 is a perspective view of a heat sink with recesses and functional profiles used
  • Figure 34 is a perspective view of a heat sink and a mounting plate for an air fan
  • 35a and b show a schematic illustration of a caulked cooling rib with rib incisions and a section along line XXXV-XXXV;
  • Figure 36 is an exploded perspective view of a heat sink with fans and cooling fins
  • FIG. 37 shows a schematic perspective illustration of a heat sink with a semiconductor component
  • FIG. 38 shows a perspective illustration of a heat sink with a connecting web
  • FIG. 39 shows a schematic side view of different versions of cooling fins
  • FIG. 40 shows a schematic side view of the designs of cooling fins that can be caulked on both sides
  • FIG. 41 shows a schematic side view of the formation of caulking bars
  • FIG. 42 shows a schematic perspective illustration of a heat sink according to the invention.
  • FIG. 43 shows a schematic perspective illustration of a heat sink according to the invention.
  • FIG. 44 shows a schematic perspective illustration of a further heat sink according to the invention.
  • FIG. 45 shows the front view of a heat sink with cooling fins inserted lengthways into the insert grooves
  • FIG. 46 shows the front view of a heat sink with cooling fins inserted transversely to the insert grooves
  • FIG. 47 shows a perspective view of the heat sink according to FIG. 46;
  • Figure 48 is a front view of a heat sink
  • Figure 49 is a front view of a heat sink
  • FIG. 50 shows a perspective view of a heat sink section
  • FIG. 51 shows a side view of the cooling body section from FIG. 1;
  • FIG. 52 shows a side view of the cooling body section from FIG. 1;
  • Figure 53 is a side view of a heat sink section
  • FIG. 54 shows a side view of a heat sink according to the invention.
  • FIG. 55 shows a side view of a heat sink according to the invention.
  • FIG. 56 shows a heat sink according to the invention
  • FIG. 57 shows a schematic enlargement of the section of a rib spacing profile
  • FIG. 58 shows another heat sink according to the invention before the rib spacing profile is installed
  • the hanging elements are identified with a basic number, and embodiments that are essential to the invention are identified with sub-numbers separated by a point.
  • the cooling fins 1.2 have a base profile 1.1 and a plurality of cooling fins 1.2.
  • the cooling fins 1.2 are connected to the base profile 1.1 with good thermal conductivity.
  • rib base 1.4 protrude from the base profile 1.1, over which the cooling fins 1.2 are attached transversely.
  • the cooling fins 1.2 on the base profile 1.1 at any desired intervals sl, s2, s3 can be arranged.
  • the cooling fins 1.2 can be connected to the base profile with respect to the different fin lengths in the thermally optimal fin spacing.
  • the base profile can be equipped with cooling fins 1.2 very flexibly and, for example, component-oriented.
  • the heat sink has a plurality of parallel base profiles 1.1.1 and 1.1.2.
  • the cooling fins 1.2 take over the task of connecting elements. As a result, very long heat sink systems with particularly economical use of the base profile can be produced.
  • Through the gap 1.6 between the two basic profiles 1.1.1 and 1.1.2 cooler outside air is drawn into the flow by the warm air flowing between the cooling fins. This improves efficiency. If, for example, a horizontal installation takes place, a free vertical flow is superimposed on a horizontally forced flow, which performs an emergency cooling function if the forced flow fails.
  • the back panels of high-performance control cabinets are partly made from large heat sink panels.
  • the base profile plate is not used thermally. It is conceivable to use thin rear wall panels 1.8 between the base profiles, which e.g. are fastened in the provided longitudinal grooves 1.8a in the sides of the base profiles. If an underground tunnel 1.9 with a height k remains between the cooling fins 1.2 and the rear wall panel 1.8, the efficiency is improved by the cold air flowing in from the side.
  • a base profile 1.1.3 has cooling fins 1.2.1 and 1.2.2 on both sides.
  • the base profile 1.1.3 has a trunk-like thickening 1.10 in the middle as a mounting surface for semiconductor components, for example. Execution is particularly suitable for converter cascades, where semiconductor elements are clamped between the heat sink.
  • FIG. 4 Another exemplary embodiment of a heat sink is shown in FIG. 4.
  • cooling fins 1.2.4 are stacked one above the other between two opposing basic profiles 1.1.4 and 1.1.5.
  • the rib formations 1.12 are caulked, for example, rib by rib by means of chisels transversely against groove walls 1.14.1 to 1.14.4 of the base profile. It is particularly advantageous if the two base profiles are inserted, for example, in a metal block-like cage. When inserting the cooling fins and caulking the rib formations, the base profiles are printed against the cage wall. As a result, heat sinks with very low tolerances and high parallelism of the two mounting surfaces of the two base profiles can be produced.
  • the exemplary embodiment according to FIG. 5 shows two identical heat sinks standing head to head.
  • the base profiles 1.1.6 and 1.1.7 of both heat sinks each have a curved side wall 1.16.1 and 1.16.2. As shown in FIG. 5, it serves to deflect the cooling air that enters through an air fan 1.74.
  • the transverse position of the cooling fins in relation to the pressing direction of the base profile makes it possible to produce 2-dimensional heat sinks in which the cooling air determines the direction of flow, e.g. the blow-out direction changes.
  • the same or different such or similar heat sink modules can be arranged one behind the other.
  • stepped basic profiles 1.1.8 according to FIG. 6 While at least two cooling fins of different heights had to be used in the case of conventionally longitudinal fins, the production of a heat sink by cooling fins 1.2.5 is also simplified with a stepped design Formation 1.17.
  • a base profile 1.1.9 according to FIG. 7 has three protrusions 1.18.1, 1.18.2, 1.18.3 for the assembly of electronic components. The protrusions run across the cooling fins 1.2.
  • a particular advantage of this arrangement is that the components mounted one behind the other on a projection, apart from the heat conduction in the base profile and the projection, are essentially cooled by the cooling fins above them and are therefore largely thermally decoupled from one another.
  • a base profile 1.1.10 has a protrusion 1.19 to the side of the cooling fins.
  • the protruding length u should preferably not exceed twice the rib height h, since otherwise the rib efficiency drops too much and the solution does not promise an economic advantage.
  • the length f of the rib flag 1.20 should not exceed the rib height h.
  • Protruding cooling fins and rib flags can also be expediently also formed at the air outlet.
  • protruding ribs are not only that savings can be made in the base profile, but that protruding ribs have emergency cooling properties, provided free convection can develop.
  • the cooling fins are designed as densities 1.23.1, 1.23.2, 1.23.3 and have rib shapes according to FIG. 9.
  • the cooling fin 1.2 is punched out, for example, on the fin base 1.11 and transversely to the fin bases 1.4.1, 1.4.2, 1.4.3 and 1.4.4 of the Base profile 1.1.11 inserted and then connected to the base profile 1.1 with good thermal conductivity.
  • the cooling fin 1.2 has an accumulation of material or the thickening 1.23.1-1.23.3 on the fin base 1.11. This serves to provide sufficient molding material to caulk the rib thickenings 1.23.1, 1.23.2, 1.23.3 against the groove walls 1.14 and a groove bottom 1.15.1, 1.15.2.
  • the fin bases are, for example, conical 1.4.1 or with hammer cuts 1.4.3, 1.4.4.
  • the base profile 1.1.11 also has locking grooves 1.25 and further auxiliary grooves 1.26.
  • a corrugation or toothing of the connecting surface is also suitable for a better tight fit. Due to their large surface area, the latter reduce the contact resistance of the heat flow between the cooling fin and the base profile. The convex formation of a ridge surface 31 also improves the contact.
  • the groove bases are preferably concave 1.15.1 or convex 1.15.2. It is thereby achieved, for example, that the plastically deformable stress state is reached earlier by additional bending stresses. In addition, springback is diverted into a transverse or other contact pressure.
  • the rib formations are preferably shorter than the height of the rib bases or grooves.
  • the cooling rib 1.2 comes to rest on the rib bases 1.4.1 to 1.4.4 or ridge surface 1.31 and becomes additionally firm when caulking clamped against the rib bases 1.4.1 to 1.4.4 and ridge surfaces 1.31.
  • a toothing or corrugation 1.33 on the rib base 1.4.2 or on one side of a shape 1.33.1 of the cooling fin improves the warm contact.
  • the rib thickening 1.23.2, 1.23.3 preferably has a caulking groove 1.27 on one side or, not shown, on both sides, which improves material displacement to the groove base when the chisel engages.
  • Cooling fins for example, formed as an extruded profile, preferably have a tongue and groove connection 1.24 in the rib thickening.
  • the thickening on the rib foot 1.11 can be designed differently, as shown in FIG. 10.
  • the thickness of the thickening 1.23.4 and 1.23.5 corresponds exactly to the rib spacing.
  • the ribs can be strung together or stacked and / or joined together in one manufacturing step with the base profile 1.1 by caulking with chisels 1.28. If the rib spacing is very large or if individual ribs or entire rows of ribs are omitted, the thickness of the thickening does not correspond to the rib spacing, as shown in 1.23.6 and 1.23.7.
  • the formation of the thickening can expediently be formed only on one side, as shown in 1.23.5 and 1.23.7.
  • the caulking between cooling rib 1.2.6 and base profile 1.1 is shown in more detail in Figure 11.
  • the rib formations 1.12 are placed in grooves 1.3 of the base profile or between the rib bases 1.4 of the base profile 1.1.
  • the rib formations 1.12 which are somewhat conical in the present exemplary embodiment, are then caulked transversely against the groove walls 1.14 of the base profile 1.1 using chisels 1.28, so that a particular one high frictional connection and good heat-conducting contact between cooling fin 1.2.6 and base profile 1.1.
  • the groove walls 1.14 of the base profile 1.1 or the surface of the rib base 1.4 are corrugated or serrated in order to additionally enlarge the contact area between the cooling rib and the base profile.
  • FIG. 12 shows the heat sink from FIG. 11 in a perspective representation after caulking a rib thickening. It is also shown how two chisels 1.28.1, 1.28.2 engage on both sides of the cooling fin 1.2.6. If several parallel cooling fins 1.2.6 are to be caulked together, this can be achieved by a series of further chisels arranged in a comb-like manner per groove.
  • Figure 13 shows a side view in section of a heat sink 1.2.7.
  • the rib thickening 1.23 has only a small height, similar to the height of the hip cut 1.30 of the rib base 1.4. It is illustrated how the material accumulation during caulking at least partially fills the undercuts laterally through plastic deformation.
  • FIG. 14 shows a cooling rib 1.2.8 and chisels 1.28.3, 1.28.4 guided perpendicular to the cooling fin surface.
  • the cooling fins are, for example, stacked one on top of the other and caulked individually. This method makes it possible to realize rib spacings of a few tenths of a millimeter, which can no longer be controlled by means of the above method according to FIGS. 11 and 12 due to the chisel thickness being too small.
  • the chisels can engage in transverse grooves 1.29 or longitudinal grooves 1.13.
  • caulking is carried out transversely against the groove walls or against the groove base.
  • a robust chisel plate in the shape of the lying cooling fin can also be used.
  • This heat sink version is particularly suitable for fully automated production.
  • the rib formations 1.12 of the cooling rib 1.2.9 in FIG. 15 have, for example, round recesses 1.32.
  • the rib formations 1.12 are spread apart on all sides and pressed or caulked against the groove walls 1.14. It is also conceivable to press caulking pins into the recesses.
  • chisels with a flat forehead can also be used. These can e.g. depending on the dimension of the rib tab of the cooling rib 1.2.10 m of different versions A, B and C according to Figure 16a and 16b.
  • Figure A shows a flat chisel imprint 1.34 with a uniform caulking 1.35.
  • Figure B shows a chisel with tooth-like protrusions 1.36. These have the task of pressing the rib formation 1.12 selectively 1.37 or in sections against the groove wall 1.14 with particularly high deformation and pressure.
  • the chisel leaves a notch at the edge 1.38 in the rib formation with likewise high deformation 1.39, forming a large contact surface with the base profile.
  • Caulking bars 1.40 can also be formed from several thin sheet metal sections that are placed on top of each other.
  • a caulking according to Figure 11 is also possible with thin cooling fins 1.2.11 made of sheet metal, as shown in Figure 18.
  • thin cooling fins 1.2.11 made of sheet metal, as shown in Figure 18.
  • Rib thickenings 1.22 can also be produced by one-off or multiple lateral turning over according to the principle shown in FIG. 19.
  • the turning over of the outer edges according to FIGS. 18 and 19 can be done on other, e.g. two opposite long edges of the cooling fin 1.2.12 take place, for example, to produce cooling fins for the heat sink according to FIGS. 14 and 15.
  • FIG. 20 also preferably shows designs of the rib formations 1.12 and of the base profile 1.1.12.
  • the base profile has a funnel-shaped insert groove 1.47.
  • Desk surfaces 1.46 on both sides make it easier to insert the cooling fins 1.2.13.
  • the base profile 1.1 has an expansion base 1.48 in the base of the groove. This supports the deformation and the latching of latching formations 1.45 at the free ends of the rib formations 1.12.
  • Chisels 1.28 a chisel recess 1.49 has proven to be advantageous. This rises above the height of the Insert grooves 1.3 and the rib thickening 1.23, so that a section of the cooling surface is also included. This has the advantage that smaller deformations and material stresses act from the caulked rib formations into the cooling rib.
  • a cooling fin 1.2.14 is pressed and clamped transversely between the fin bases 1.4 of the base profile 1.1.13.
  • a serration 1.51 or corrugation 1.52 on the contact surface between the base profile and the cooling fin increases the pull-out force and improves the warm contact.
  • no material is caulked crosswise.
  • the cooling ribs are additionally clamped onto the rib bases 1.4.
  • rib leg 1.50 on the rib base 1.11 of the cooling rib 1.2.14 is suitable.
  • Simple clip or plug connections are also suitable. They are particularly suitable for the simplest embodiments and sheet metal fins.
  • a conical design of the insert groove 1.3 and the rib formation 1.12.5, 1.12.6 means that, for example, a thin sheet metal rib cuts into the corrugation 1.52 of the rib base when pressed in and forms particularly good heat contact, see FIG. 22.
  • the rib formation breaks at least the surface of the groove wall, whereby, for example, the oxide skin of aluminum profiles is broken. As a result, the warm contact is significantly improved.
  • This embodiment is suitable when using sheet metal fins made of a material that is hard in comparison to the base profile 1.1.13, for example in the case of a cooling fin 1.2.14 made of sheet steel.
  • the rib formations 1.12 are bulged on one or both sides alternately 1.55 or twisted 1.54. Your processing is therefore wider than the groove width. If several parallel cooling fins 1.2.15 with mutually alternating bulges or twists are pressed against each other, they spread out transversely and the ribs are pressed against the groove walls of the base profile 1.1.
  • This method is particularly suitable if the rib formations 1.12 are formed on opposite rib sides and the ribs can be stacked on top of one another. Then one or more ribs are printed against each other in one step and wedged against the groove walls.
  • the cooling fin 1.2.16 is made of sheet metal.
  • the formations 1.12 are folded over at least on one outside.
  • the folded formations 1.57 are laterally caulked or pressed against the base profile.
  • the folded formations are alternately folded over on both sides of the cooling fin.
  • the heat sink according to FIG. 3 with cooling fins 1.2.1, 1.2.2 fitted on both sides can be similar
  • Cooling fins are connected laterally. Here a single cooling rib 1.2.17 with a base profile recess 1.58 according to FIG. 25 is produced. This cooling rib can be placed over the base profile of FIG. 2 and the bent rib formations 1.57 can be caulked on both sides, for example against the groove bottom of the base profile.
  • the cooling fin 1.2.18 has edged formations which are additionally bulged 1.57.1, corrugated or, for example, zigzag-like 1.57.2.
  • the rib formation 1.12 is pressed flat down and thus caulked transversely against the groove walls of the base profile or side walls of the rib bases.
  • a cooling fin according to FIG. 26 can also be made from an extruded L-profile.
  • the rib legs are sectionally e.g. punched out. This is followed by the bulging or corrugation of the rib formation 1.59.
  • cooling fins 1.2.19 can also be used without shaping e.g. as an L-profile or usually as an extruded T-profile, press directly into grooves 1.3 using suitable chisels 1.28.
  • Figure 27 shows schematically two basic manufacturing processes:
  • Chisels 1.28.6 have a width that approximately corresponds to the width of the grooves.
  • the rib legs 1.50 are sheared off laterally and pressed into the groove.
  • the groove is preferably conically open to the free end, as a result of which the shear edges of the punched-out area are pressed against the groove walls 1.14.
  • the method is particularly suitable when the rib material is softer than that of the base profile, e.g. the cooling fins are made of pure aluminum, while the base profile was made of a hardened aluminum alloy.
  • the former method is recommended for ribs made of a material with a similar or higher rib strength than the material of the base profile.
  • FIG. 28 shows a heat sink, the cooling fins 1.2.20 of which are made of laterally bent sheet metal 1.60.
  • the band plate alternately has punched outs 1.61 on the end face, which allow flow through.
  • the band plate 1.60 has a repeating sequence of punchings 1.64 of each cooling fin 1.2.21.
  • the cooling fin 1.2.22 is bent in a caterpillar-like manner as a band plate 1.60.
  • the rib shapes 1.57 are partially connected to one another as rib bridges 1.66. These are caulked into the grooves 1.3. Needle heat sinks are to be produced by cooling rib punchings 1.64 and partial punching of the bending edges 1.68.
  • the cooling fins 1.2.23 have suitable notches 1.70 which support the fins against one another or make them concealable with one another.
  • the latter has the advantage that complete rib packages are prefabricated, in particular by machine, and then, in a final step, as a whole with the basic profile, e.g. can be caulked with comb-like chisels according to the method of FIG.
  • FIG. 32 Another advantage of the heat sink according to the invention results from FIG. 32 in that lateral longitudinal grooves 1.72 in the base profile 1.1.18 can also be pressed. Tapping screws can be screwed into these or, for example, rubber seals 1.73.1 or plastic profiles 1.73.2 can be inserted. This allows cooling fans or fans 1.74 to be installed in front of the transverse cooling fins 1.2.24 without drilling and tapping. The fans 1.74 can be freely moved in the longitudinal groove 1.72, e.g. in front of an electronic module with high power dissipation.
  • the cooling fins 1.2.25 have open recesses 1.77 on the edge.
  • Cool fins 1.2.25 especially thin sheet metal fins. You can even have other sliding nut channels or the like functional features.
  • the cooling fins 1.2.26 in FIG. 34 are provided with, in this case, closed recesses 1.78. They are used to be able to attach fans or blowers directly in front of the cooling fins.
  • a mounting plate 1.80 with clips 1.81 on both sides takes over the connection function between the heat sink and standard fan.
  • rib incisions 1.84 according to FIG. 35 can be produced at the same time. These can have teeth 1.85 and can be notched on both sides 1.86.
  • the heat sink with cooling fins 1.2.28 according to an exploded drawing according to FIG. 36 has two basic profiles 1.1.19, 1.1.20 each with a different profile projection 1.90.
  • the profile projection 1.90 can have latching lugs 1.91, sliding grooves 1.92, stop strips 1.97, for example retaining grooves 1.98 for housing sheets, etc.
  • the profile projection 1.90 forms a side wall of the air pre-chamber 1.93 upwards and downwards.
  • the two outer cooling fins 1.2.29 are longer and close the air pre-chamber 1.93 to the side.
  • the side ribs have additional punched-out 1.95 on the outer edges.
  • 36 are cross-sectionally the same as the other cooling fins 1.2.
  • the cooling fins 1.2.30 have rib recesses for e.g. Semiconductor elements 1,100. This allows mounting on the side of the base profile 1.1.22 with cooling fins. The cooling fins bridge the semiconductor elements.
  • the rib recesses 1,101 are undersized with regard to the height of the semiconductor element.
  • the cooling fins 1.2.30 they come to rest on the semiconductor element and press it onto the base profile 1.1.22.
  • An advantage of this application is that individual semiconductor heat sink modules are created. In the event of damage, these can easily be replaced. Clamping devices are no longer required.
  • a pressure equalization adjuster 1.105 or a plate is preferably placed between the cooling fin and the semiconductor element.
  • the cooling fins 1.2.30 have, for example, side ribs 1.103, which print flat on the semiconductor element.
  • the base profile has mounting grooves 1,106 for electronic components for fastening the semiconductor elements.
  • the heat sink according to FIG. 38 has two flat surfaces, here as a connecting web 1.107 between the cooling fins
  • the base profile 1.1.24 has several mounting grooves 1.106 for fastening semiconductor elements.
  • the cooling fins 1.2.32 have lateral projections 1.110.
  • one or more hollow chambers 1.112 or flow channels are arranged one above the other.
  • the channels are preferably similar, i.e. have approximately the same hydraulic diameter.
  • Hollow chambers can also be formed using H-shaped cooling fins 1,114.
  • cooling fins 1,116 open on both sides with several hollow chambers are created.
  • the protrusions 1.110 are designed, for example, as a groove 1.117 and a peg 1.118. This embodiment is particularly suitable for heat sinks of the type shown in FIG. 4. Since such heat sinks are often pressed together in series with semiconductor elements under high pressure, there is a risk that the inner cooling fins
  • Figure 40 shows several cooling fins stacked one above the other
  • This function can also be carried out by sheet metal fins, for example, by several notches in the cooling surface of the cooling fins.
  • sheet metal fins for example, by several notches in the cooling surface of the cooling fins.
  • heat sinks for example according to FIG. 4
  • thin sheet metal fins or thick foils are used.
  • caulking bars 1.40.1 or slot nuts 1.41.1 according to FIG. 41 is particularly suitable for this. These have retaining pins 1.123, which protrude with a length e over clamping pins 1.125 located on the same side.
  • a cooling film 1.120 is first wedged in a holding groove 1.122, then the clamping pins 1.125 press the film 1.120 into a clamping groove 1.124, as a result of which the cooling film 1.120 is stretched on both sides, as indicated by the double arrow.
  • Both base profiles are kept at a distance, for example by means of support plates 1.43.
  • a heat sink according to FIG. 42 has a plurality of
  • the cooling fins 2.3 are connected to the base profiles 2.1 with good thermal conductivity. At the same time they connect
  • Cooling fins 2.3 the base profiles mechanically firmly together, e.g. by caulking or gluing the cooling fins 2.3 to each of the base profiles 2.1.
  • the 43 has two base profiles 2.1.1 and 2.1.2 and a plurality of cooling fins 2.3.
  • the cooling fins 2.3 are connected to the base profiles 2.1.1 and 2.1.2 with good thermal conductivity. Air is blown between the cooling fins 2.3 between the base profiles 2.1.1 and 2.1.2 by means of a fan 2.5.
  • the cover plate 2.4 acts as a bump wall and forces the outflow of the cooling air to the two free, opposite sides.
  • the air flow divides and the cooling air emerges to one free side after half the heat sink length.
  • the free channel cross section has also doubled and the flow resistance reduced.
  • the cooling fins 2.3 project on both sides with their cooling rib edges 2.6.1 and 2.6.3 over the width of the base profiles 2.1.1 and 2.1.2. This is particularly economical because it allows the basic profiles 2.1.1 and 2.1.2 to be reduced to their minimum size for the assembly of the components or to the necessary size to ensure the heat distribution.
  • a heat sink according to FIG. 44 has shaped profiles 2.1.3 and 2.1.4 as the base profile and a large number of cooling fins 2.3.
  • the air flows between the cooling fins according to the flow resistance and emerges from the heat sink at all three free cooling fin edges 2.6.4 - 2.6.6.
  • the standards n 2 and n 3 of a mounting surface of the two adjacent base profiles 2.1.3 and 2.1.4 have a common half space. In this way, particularly compact heat sinks can be produced.
  • the caulking rib 5.4 is generally reprinted to the horizontal and caulked by means of chisels 5.5 against the top 5.12 of the L-shaped formation 5.10 of the cooling plate 5.2 or cooling rib.
  • Figure 46 shows the principle of caulking cooling fins 5.2, which are used transversely to the insert grooves 5.3 of the basic profile 5.1. Die cuts 5.15 in the cooling ribs 5.2 allow the cooling ribs with their L-shaped or T-shaped rib feet 5.21 to be inserted into the insert grooves 5.3 and, if appropriate, into the auxiliary grooves 5.8.
  • the caulking ribs 5.4 m are then caulked in such a way that the caulking ribs 5.4.1 and 5.4.2 are arranged laterally to one another are reprinted and caulked against an upper side 5.12.3 of the T-shaped formations 5.11 of the cooling fin 5.2 by means of chisels.
  • the caulking ribs 5.4.3 and 5.4.4 show this after caulking.
  • insert grooves 5.3 and, in depth and width, smaller auxiliary grooves 5.8 form caulking ribs 5.4.1, 5.4.2 shortened to the groove base. This prevents the T-shaped formations 5.11 of the cooling rib 5.2 or their notches or the like when the caulking rib 5.4 is transferred. be compressed, which leads to a multitude of problems in practice.
  • Figure 47 shows a heat sink according to Figure 46 in perspective.
  • the entire caulking rib 5.4 is not reprinted and caulked, but only between two cooling ribs, e.g. sections 5.4.5 of the cooling ribs 5.2.3 and 5.2.4 of the caulking ribs 5.4. This is also evident in the side view of the heat sink in FIG. 46.
  • the sections 5.4.5 of the caulking ribs 5.4 are caulked against the mutually facing upper side 5.12 of the two adjacent cooling ribs 5.2.1 and 5.2.2 in the case of a T-shaped rib foot 5.21.
  • caulking ribs 5.4 by means of auxiliary grooves 5.8 is also particularly suitable for the caulking of cooling ribs which are fixed longitudinally in the insert grooves and have a T-shaped configuration 5.11 of the fin foot 5.21.
  • FIG. 48 shows that this embodiment is also suitable for the caulking of cooling fins with L-shaped constructions 5.10 fixed longitudinally in the insert grooves on the rib foot 5.21.
  • an auxiliary groove 5.8 and the adjacent insert grooves 5.3 essentially only form a caulking rib 5.3, while a support rib 5.7 is functionally formed on the rear side 5.9 of the cooling rib 5.2.
  • the caulking rib 5.4 is preferably longer than the rib leg of the L-shaped design 5.10, whereby the caulking rib 5.4 presses the cooling rib against the support rib 5.7 or groove wall of the insert groove. This is illustrated by the deformed caulking ribs 5.4.6 and 5.4.7.
  • cooling fins 5.2 have a locking groove 5.20 or the like. on the rib foot 5.21. It has also proven to be advantageous to make nut cuts 5.19 on the groove base 5.16, the groove corners 5.17 or groove flanks 5.18 of the insert grooves 5.3, which improves the fit of the cooling rib 5.2 in the insert groove 5.3 and / or the shaping of the caulking ribs 5.4.
  • auxiliary groove 5.8 has a smaller depth than the insert grooves 5.3, a support rib 5.7 can also be omitted.
  • the cooling fin 5.2 nevertheless sits a bit far in the insertion groove 5.3, as shown in FIG. 49.
  • the base plate 6.1 of the heat sink from FIG. 50 has a plurality of ribs 6.3 spaced apart in parallel.
  • the cooling rib 6.2 or the cooling plate Corresponding to the ribs 6.3 of the base plate 6.1, the cooling rib 6.2 or the cooling plate has an essentially L-shaped configuration 6.6 across the width of the base plate 6.1 and with a development essentially corresponding to the surface contour of the ribs 6.3 of the base plate 6.1.
  • the shapes 6.6 of the cooling fin 6.2 which are close to the ribs 6.3 of the base plate 6.1 are connected to the base plate 6.1 by caulking on all sides against the surfaces 6.4 of the ribs 6.3.
  • the formations 6.6 of the cooling rib 6.2 are e.g. formed by the deformation of an edge portion of the cooling fin 6.2 or cooling plate.
  • FIG. 51 shows the side view of the cooling body section from FIG. 50.
  • the shape 6.6.1 of the cooling fin 6.2 covers the major part of the fin surface 6.4 of the Rib 6.3 of the basic profile 6.1 between the two cooling ribs 6.2.1 and 6.2.2. This creates a large connection surface and a low thermal resistance between base plate 6.1 and cooling fins 6.2.
  • FIG. 52 shows how the formations 6.6.2 - 6.6.8 run essentially in accordance with the surface contour of the ribs 6.3 of the base plate 6.1. If the part of the rib formation 6.6.9 located between two ribs 6.3.1 and 6.3.2 is designed to be longer in its development than the clear distance between the ribs 6.3.1 and 6.3.2, then this part of the rib formation becomes additionally transverse when caulking the ribs 6.3.1 and 6.3.2 printed.
  • the formations 6.6 can be caulked to two different configurations of chisels 6.7 with the basic profile.
  • Chisel 6.7.1 prints the formation 6.6.9 between the ribs 6.3.1 and 6.3.2 against the rib walls.
  • Chisel 6.7.2 prints the formation 6.6.10 each over a rib 6.3.3.
  • the advantage is that the wedge forces act on both sides in the direction of the rib 6.3.3 and thus lead to less curvature or other deformation of the base plate 6.1 than is the case when using chisels 6.7.1.
  • the clear height h6 of the formations 6.6 is preferably smaller than the height Hr of the ribs 6.3. Will the cooling rib
  • the base plate 7.1 has a number of main grooves 7.2. Cooling fins 7.3 have on their base 7.6 two legs 7.4 which are inserted into the main grooves 7.2 of the base plate 7.1. Chisels 7.8 press onto the legs 7.4.1, 7.4.2 and caulk them into the main groove in the direction of the groove base and laterally against the groove walls with plastic deformation. The combination of friction and simultaneous lateral pressure on the groove walls increases the contact area compared to previous methods.
  • the 56 has a plurality of closely spaced cooling fins 8.2. These are connected at one end to the base profile 8.1 of the cooling unit.
  • the rib spacing profile 8.3 is placed on the free ends 8.11 of the cooling fins 8.2.
  • the ends 8.11 of the cooling fins 8.2 are attacked laterally by short grooved legs 8.12 of the rib spacing profile 8.3.
  • the long edge 8.16 of the rib spacing profile 8.3 is fixed in a locking groove 8.17 at the leg end of the base profile 8.1.
  • the rib spacing profile 8.3, with two cooling ribs 8.2 and the base profile 8.1, forms a flow channel 8.6 in which a cooling medium, for example air, can be blown through by means of fans or blowers.
  • the outer Surface 8.8 of the rib spacing profile 8.3 is enlarged by grooves in order to increase the heat dissipation to the outside.
  • FIG. 57 shows a schematic section of a rib spacing profile 8.3.
  • the cooling fin 8.2.1 is fixed laterally by means of short grooved legs 8.12 of the fin spacing profile 8.3.
  • the cooling rib 8.2.2 is e.g. pressed into a slot 8.13. This prevents the cooling fins from being printed to the side during mechanical processing, for example, and deforming.
  • Locking lugs 8.14 on the grooved legs 8.12 or insert grooves 8.13 additionally hold the rib spacing profile 8.3 on the cooling ribs 8.2 and prevent the rib spacing profile 8.3 from being printed by the cooling unit even with large impression forces.
  • the right end of the rib spacing profile 8.3 has a thickening with integrated mounting channels 8.22 and an open screw channel 8.23.
  • FIG. 58 shows a heat sink before the assembly of a rib spacing profile 8.3.
  • the rib spacing profile 8.3 has two outer legs 8.4.1 and 8.4.2.
  • the length of the outer legs 8.5.1 and 8.5.2 of the U-shaped base profile 8.1 can be made correspondingly short.
  • this makes it possible for this basic profile to be produced more cheaply on smaller extrusion presses.
  • the rib spacing profile 8.3 has open screw channels 8.23 for the attachment of fans.
  • the screw channels 8.23.1 and 8.23.2 are not located at the end of long cooling fins or at the end, for example, of the outer legs 8.5.3 or 8.5.4 of the base profile 8.1, but on both sides 8.24.1 and 8.24.2 of the rib spacing profile 8.3. This allows a closer tolerance for the distance between the screw channels and a problem-free air assembly can be achieved.
  • the side legs 8.5.3 and 8.5.4 of the base profile 8.1 are fixed to one another by the connection via the rib spacing profile 8.3 and oblique side legs 8.5 are either pulled towards one another or spread apart. This improves the external dimensional accuracy of the heat sink.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

L'invention concerne un corps de refroidissement servant à refroidir des éléments, notamment des composants à semi-conducteur, des moteurs et des unités, qui se compose d'un profilé de base (1.1 - 1.1.24) extrudé en métal léger, comportant des ailettes de refroidissement (1.2 - 1.2.33; 1.120) dépassant du profilé de base (1.1 - 1.1.24) à distance les unes des autres, qui sont reliées au profilé de base (1.1 - 1.1.24) en contact caloporteur. Selon l'invention, les ailettes de refroidissement (1.2 - 1.2.33; 1.120) doivent être reliées au profilé de base (1.1 - 1.1.24), transversalement ou en biais par rapport au sens d'extrusion dudit profilé de base.
PCT/EP1999/004779 1998-07-09 1999-07-07 Corps de refroidissement muni d'ailettes transversales Ceased WO2000003574A2 (fr)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
DE19830512.5 1998-07-09
DE19830512A DE19830512A1 (de) 1998-07-09 1998-07-09 Kühlkörper mit Querrippen
DE19841583A DE19841583A1 (de) 1998-09-11 1998-09-11 Kühlkörper mit mindestens zwei separaten Basisplatten
DE19841583.4 1998-09-11
DE19841911A DE19841911A1 (de) 1998-09-14 1998-09-14 Kühlkörper für im wesentlichen L-förmige oder T-förmige Kühlrippen
DE19841911.2 1998-09-14
DE19842977A DE19842977A1 (de) 1998-09-19 1998-09-19 Kühlkörper mit Kühlrippen quer zu Rippen des Grundprofils und Verfahren zu dessen Herstellung
DE19842977.0 1998-09-19
DE19852933A DE19852933A1 (de) 1998-11-17 1998-11-17 Kühlkörper zum Kühlen von Elementen
DE19852933.3 1998-11-17
DE19900970.8 1999-01-13
DE19900970A DE19900970A1 (de) 1999-01-13 1999-01-13 Kühlkörper mit Rippenabstandsprofil

Publications (2)

Publication Number Publication Date
WO2000003574A2 true WO2000003574A2 (fr) 2000-01-20
WO2000003574A3 WO2000003574A3 (fr) 2000-06-22

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PCT/EP1999/004779 Ceased WO2000003574A2 (fr) 1998-07-09 1999-07-07 Corps de refroidissement muni d'ailettes transversales

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7105692B2 (en) 2003-01-24 2006-09-12 Ciba Specialty Chemicals Corporation Crystalline modification of a manganese complex
WO2012046161A1 (fr) * 2010-10-05 2012-04-12 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif pour la dissipation thermique destine a au moins un composant electronique et procede correspondant
JP2013012695A (ja) * 2011-06-29 2013-01-17 Lin Chan-Hang 構造改良済みフィン式放熱器及びその加工方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6123349A (ja) * 1984-07-12 1986-01-31 Sumitomo Light Metal Ind Ltd 放熱器
DE3518310A1 (de) * 1985-05-22 1986-11-27 Aluminium-Walzwerke Singen Gmbh, 7700 Singen Kuehlkoerper fuer halbleiterbauelemente und verfahren zu seiner herstellung
DE29601776U1 (de) * 1996-02-02 1996-06-13 Alusuisse-Lonza Services AG, Neuhausen am Rheinfall Kühlkörper für Halbleiterbauelemente o.dgl.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7105692B2 (en) 2003-01-24 2006-09-12 Ciba Specialty Chemicals Corporation Crystalline modification of a manganese complex
WO2012046161A1 (fr) * 2010-10-05 2012-04-12 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif pour la dissipation thermique destine a au moins un composant electronique et procede correspondant
US9622382B2 (en) 2010-10-05 2017-04-11 Commissariat A L'energie Atomique Et Aux Energies Alternatives Heat-sink device intended for at least one electronic component and corresponding method
JP2013012695A (ja) * 2011-06-29 2013-01-17 Lin Chan-Hang 構造改良済みフィン式放熱器及びその加工方法

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