WO2000003574A2 - Heat sink with transverse ribs - Google Patents

Abstract

The invention relates to a heat sink for cooling elements, especially semiconductor components, motors and aggregates. Said heat sink is comprised of an extruded base profile (1.1 - 1.1.24) made of a light metal, having interspaced cooling ribs (1.2 - 1.2.33; 1.120) which protrude from the base profile (1.1 - 1.1.24) and which are connected to the base profile (1.1 - 1.1.24) in such a way that they transfer heat. The cooling ribs (1.2 - 1.2.33; 1.120) should be connected to the base profile (1.1 - 1.1.24) such that they are perpendicular or diagonal to the direction of extrusion of said base profile (1.1 - 1.1.24).

Description

 Heatsink with cross ribs

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.

Elements have to be cooled in many industrial areas today. This is especially true when elements are exposed to heat in a confined space or generate heat themselves, which can damage this element as a result of heat build-up.

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. As a rule, 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.

With a simple connection possibility, 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. Here, 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. As a result, 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. This means that 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.

The formation of 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. In addition, 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.

A maximum of 800 mm wide base profiles can currently be pressed. Extrusion heaters up to 350-400 mm wide can be extruded particularly economically. To produce wider heat sinks, several heat sinks are welded together on the long side.

The present invention has for its object to develop a heat sink and a method for its production, in which these disadvantages are eliminated. In particular, 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.

Contrary to DE-PS 35 18 310, 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. In addition, the rib spacing can be largely adapted to the requirements in terms of thermal engineering.

Furthermore, 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.

In particular, it should also be mentioned that 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. On the other hand, in the present invention, 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.

Since the basic profile can theoretically be extruded for an endlessly long period, 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. However, 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.

In the case of long heat sinks, 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.

It is also possible to use stepped base profiles, which opens up new installation options.

By layering individual cooling fins between two basic profiles and caulking the ribs m The grooves of the base profiles can be used to produce particularly compact heat sinks.

Furthermore, 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.

For example, 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.

As a result of this measure, 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.

When the heat sink length of conventional heat sinks is doubled, the flow resistance also increases. The free channel cross section has doubled in the heat sink according to the invention, however, and the air can escape on both sides with a lower overall flow resistance.

Since the inflow of air usually takes place in the direction of the cooling fin tips, heat sinks with very high cooling fins can also be cooled particularly economically and effectively with small fans. In order to connect very thin cooling fins or cooling plates to the base plate in particular, 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.

In another embodiment, in addition to each insert groove containing a cooling plate, 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. In another possibility of connecting cooling fins transversely to a base profile, the base plate has fins. Corresponding to the ribs of the base plate, 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.

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.

With regard to the degree of deformation, form fit, tight fit and achievable heat transfer, the parts behave uncritically in the case of deviating dimensional tolerances. The cross-bracing of the rib legs against the rib base prevents deformation stresses and, in particular, largely prevents the base plate from warping. In a special embodiment, 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. During assembly, 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. At the same time, 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.

In a special embodiment, 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. The advantage is that in the case of heat sinks with separately pressed cooling fins and separately pressed U-shaped base profile, the rare legs of the basic professional can be made shorter and the U-shaped base profile can be produced particularly inexpensively on smaller extrusion presses.

If the 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.

Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing; this shows m

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;

Figure 4 shows another schematic perspective

Representation of a heat sink according to the invention with two opposing base profiles;

Figure 5 shows another schematic perspective

Representation of two opposite heat sinks with air diversion;

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;

59 shows a further heat sink according to the invention;

In the following description, 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.

1 has 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. For this purpose, rib base 1.4 protrude from the base profile 1.1, over which the cooling fins 1.2 are attached transversely. It is particularly advantageous that the cooling fins 1.2 on the base profile 1.1 at any desired intervals sl, s2, s3 can be arranged. As a result, 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. Furthermore, the base profile can be equipped with cooling fins 1.2 very flexibly and, for example, component-oriented.

In a further exemplary embodiment according to FIG. 2, 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.

In a further exemplary embodiment of a heat sink according to FIG. 3, 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.

Another exemplary embodiment of a heat sink is shown in FIG. 4. Here, 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. Several, for example, the same or different such or similar heat sink modules can be arranged one behind the other.

Further new installation and use options result from the use of 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.

In a further exemplary embodiment of a heat sink according to FIG. 8, a base profile 1.1.10 has a protrusion 1.19 to the side of the cooling fins. As a result, very wide heat sinks can be stiffened against bending.

Another feature is protruding 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. As a rule, 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.

A particular advantage of protruding ribs is not only that savings can be made in the base profile, but that protruding ribs have emergency cooling properties, provided free convection can develop.

In a special embodiment, 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. In order to ensure that the cooling fin 1.2 is held firmly in place, 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. When caulking the accumulation of material, the above training is at least partially filled plastically.

A corrugation or toothing of the connecting surface, not shown in FIG. 9, 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.

In order to take into account the elastic springback that occurs during caulking, 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.

If the rib thickenings 1.23.1, 1.23.2, 1.23.3 are caulked in the direction of the base profile 1.1 with chisels, the rib formations are preferably shorter than the height of the rib bases or grooves. As a result, 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. In a special case, the thickness of the thickening 1.23.4 and 1.23.5 corresponds exactly to the rib spacing. In this case, 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. In an embodiment not shown, 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.

While the chisels 1.28 are guided parallel to the cooling ribs in FIGS. 11 and 12 and, in the manner of a comb, caulk several parallel rib thickenings at the same time, 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. Correspondingly, caulking is carried out transversely against the groove walls or against the groove base. Instead of several chisels 28, 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.

In a similar embodiment as in FIG. 14, the rib formations 1.12 of the cooling rib 1.2.9 in FIG. 15 have, for example, round recesses 1.32. By means of conically tapered chisels 1.28.5, 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.

Instead of wedge-shaped or conically pointed chisels, 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. In Figure C, 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.

When using thin cooling fins 1.2 made of sheet metal, as shown in FIG. 17, it is advantageous to use caulking bars

1.40 or use separate slot nuts 1.41. These determine the rib spacing and ensure a good heat transfer due to their lateral surfaces 1.42 between base profile 1.1 and cooling fin after caulking according to one of the above-mentioned processes. 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. In order to obtain a rib thickening 1.21 on the rib base 1.11, it is sufficient to fold the sheet one or more times to one or both sides, whereby on the one hand a material thickening for better caulking and on the other hand the rib spacing is set to a multiple of the sheet thickness.

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. Furthermore, 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.

For better cross-caulking of the rib formations 1.12 when using those parallel to the cooling rib 1.2.13

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.

Internal corner recesses 1.44 have proven to be advantageous so that the cooling fins lie better on the ridge surfaces 1.31 of the base profile 1.1.12.

In the case of heat sinks for free convection, it may be sufficient to dispense with caulking between the cooling fins and the base profile. In an exemplary embodiment of a heat sink according to FIG. 21, 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. As a rule, no material is caulked crosswise. First and foremost, the elasticity of the rib material and the kink resistance of the rib formations 1.12 are used. If the punched-out sections are shorter than the height of the grooves or rib bases, the cooling ribs are additionally clamped onto the rib bases 1.4. For better low pressure, for example, 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. Or 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.

In a further embodiment according to Figures 23a and

23b, 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.

According to Figure 24, the cooling fin 1.2.16 is made of sheet metal. In order to obtain a better tight fit and a larger contact area with the base profile 1.1.14, the formations 1.12 are folded over at least on one outside. In one process step, the folded formations 1.57 are laterally caulked or pressed against the base profile. In an exemplary embodiment not shown, 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

Embodiment are made in that the two

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.

In a special embodiment according to FIG. 26, 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. When the chisels 1.28 engage, 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.

Basically, 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. As a result, 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.

Chisels according to Figure 1.27a on the right caulk the rib spread directly into the groove under high

Material displacement and material deformation. This

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.

A particular disadvantage of thin cooling fins is that they can be bent or printed very easily after the heat sink has been completed. In the case of thin ribbed sheets, it can therefore be advantageous to manufacture the cooling ribs 1.2.20 in one piece from bent and punched strip sheet. 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. At least one rib bridge 1.62.1, 1.62.2, preferably at least on the upper outer edge of the cooling body, gives the cooling ribs 1.2.20 a mutually high stability. Preferably at least one further rib bridge 1.62.2, e.g. present on the opposite band edge. This allows the strip to be processed better when punching and folding. Thanks to the bevelled ribs 1.57, a large contact area and good heat transfer can be created. Since the cooling fins are inserted transversely to profile grooves of the base profile, less precision is required than if the fins had to be inserted or inserted lengthways into grooves or slots. This makes the manufacturing process described particularly economical and easy to automate.

In a special embodiment of the heat sink

Figure 29, the band plate 1.60 has a repeating sequence of punchings 1.64 of each cooling fin 1.2.21.

By partially punching out the long edge 1.65 of the Band plate 1.60 can be designed cooling needles 1.67 or recesses for inserting small fans.

In an embodiment according to FIG. 30, which is very similar to FIGS. 28 and 29, 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.

In an embodiment according to FIG. 31, 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.

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.

With such a heat sink, the developer of electrical power electronics is given the opportunity to easily change the final position of the fan until it is ready for series production. For example, at Performance increase e additional fans can be installed at any time.

If the transversely pressed-in ribs are not inserted over the entire width of the base profile, but instead the base profile 1.1.18 has a profile projection 1.75, an already half-closed prechamber is thereby formed.

In a further embodiment according to FIG. 33, the cooling fins 1.2.25 have open recesses 1.77 on the edge.

They serve e.g. for the direct mounting of the heat sink

Mounting rails by hanging or unclipping etc.

It is also possible to have separate open or closed

Insert profiles 1.79.1, 1.79.2 into the recesses, which e.g. Sliding nut channels 1.79.1 across the

Have cooling fins 1.2.25 manufactured. There are also corner profiles

1.79.2 conceivable. These serve e.g. as a simple corner protector or provide a connection and stiffening of the

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. For example, A mounting plate 1.80 with clips 1.81 on both sides takes over the connection function between the heat sink and standard fan.

In one manufacturing step, e.g. when punching the rib formations 1.12 of the cooling rib 1.2.27, 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.

Often, several semiconductor elements are alternately clamped between heat sinks by means of clamping devices in order to achieve good heat transfer. In one embodiment according to Figure 37, 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.

In a special embodiment, the rib recesses 1,101 are undersized with regard to the height of the semiconductor element. When caulking 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. Or the cooling fins 1.2.30 have, for example, side ribs 1.103, which print flat on the semiconductor element. Preferably be for the Semiconductor elements in the base profile 1.1 rib base omitted or special recesses 1.102 provided. 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

1.2.31 shown for multi-sided assembly of semiconductor elements. The base profile 1.1.24 has several mounting grooves 1.106 for fastening semiconductor elements.

According to FIG. 39, the cooling fins 1.2.32 have lateral projections 1.110. When several cooling fins are lined up, 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. By lining up several H-shaped profiles, 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

1.2.32 buckle. The projections 1,110 stiffen the individual cooling fins against each other and take over the first

Line a mechanical function.

Figure 40 shows several cooling fins stacked one above the other

1.2.33 with rib thickening 1.23 for use as cooling fins for heat sinks according to Figure 4. When using

This function can also be carried out by sheet metal fins, for example, by several notches in the cooling surface of the cooling fins. For special uses of heat sinks, for example according to FIG. 4, thin sheet metal fins or thick foils are used. The use of 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

Base profiles 2.1 and a variety of cooling fins 2.3.

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.

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.

With the heat sink, 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. According to the invention, 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.

45 has a plurality of closely spaced insert grooves 5.3. Two adjacent insert grooves 5.3 form a caulking rib 5.4. 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.

In this exemplary embodiment, 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. In fact, in the case shown, 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.

The formation of 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. However, 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.

It is advantageous if the 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.

In the event that the 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. 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.

According to FIG. 53, 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

6.2 caulked with the basic profile 6.1, the formations 6.6 of the cooling rib 6.2 first come onto the ribs

6.3 of the base profile 6.1 to lie on and are then clamped onto the ribs 6.3 while creating a tensile stress in the leg 6.12 of the formations 6.6 and at the same time caulked with plastic deformation. The advantage is that the cooling fins come to rest without gaps on the ribs 6.3 of the basic profile. A further advantage is that the plastic tension Deformation improved and an improved surface contact between cooling rib 6.2 and base profile 6.1 produced

54 shows a side view of a heat sink according to the invention. 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.

55, two legs of adjacent cooling fins 7.3 are fixed in a main groove 7.2. The chisel 7.8.2 simultaneously presses the two legs 7.5.1, 7.5.2 of two adjacent cooling ribs 7.3 into the common main groove 7.2 and caulked them in the direction of the groove base and laterally with plastic deformation against the groove wall.

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. In addition, 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. In contrast, 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. In this embodiment, 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. As a result, 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. In contrast to basic profile 8.1 from FIG. 56, this makes it possible for this basic profile to be produced more cheaply on smaller extrusion presses.

As shown in FIG. 59, it is of great advantage if 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. In addition, 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.

Claims

Patent claims 1. Heat sink for cooling elements, in particular semiconductor components, motors and aggregates, made of a base profile extruded from light metal (1.1 1.1.24), with cooling ribs (1.2 - 1.2) projecting at a distance from one another from the base profile (1.1 - 1.1.24). 33; 1.120), which are connected to the base profile (1.1 - 1.1.24) in heat-transferring contact, characterized, that the cooling ribs (1.2 - 1.2.33; 1.120) are connected to the base profile (1.1 - 1.1.24) transversely or obliquely to the extrusion direction. 2. Heat sink according to claim 1, characterized in that at least two base profiles (1.1.1, 1.1.2) are arranged behind or next to one another and are connected to one another via the cooling ribs (1.2). 3. Heat sink according to claim 2, characterized in that at least two base profiles (1.1.1, 1.1.2) are arranged one behind the other or next to one another and are at a distance of up to six times the height of the cooling ribs (h). 4. Heat sink according to one of claims 1 - 3, characterized in that the base profile (1.1.3) has a trunk-like thickening (1.10). 5. Heat sink according to claim 4, characterized in that semiconductor elements to be cooled are mounted laterally on the trunk-like thickening (1.10) of the heat sink. 6. Heat sink according to claims 1 - 5, characterized in that cooling ribs (1.2.1, 1.2.2, 1.2.25, 1.2.31) protrude from the base profile (1.1.3, 1.1.24) on several sides. 7. Heat sink according to claim 1, characterized in that two parallel or opposite m at an angle Basic profiles (1.1.4, 1.1.5; 1.1.6, 1.1.7; 1.1.19, 1.1.20). 8. Heat sink according to claim 1, characterized in that the cooling ribs (1.2) are partially surrounded by at least two base profiles (1.1.6, 1.1.7; 1.16.1, 1.16.2). 9. Heat sink according to claim 1, characterized in that the base profile (1.8) has at least one transverse step (1.17). 10. Heat sink according to claim 9, characterized in that the base profile (1.1.8) has at least one transverse step (1.17) and is occupied by the same cooling ribs (1.2.5). 11. Heat sink according to claim 1, characterized in that the base profile (1.1.9) has at least one projection (1.18.1, 1.18.2, 1.18.3) to an outside not occupied by cooling fins (1.2). 12. Heat sink according to claim 1, characterized in that the base profile (1.1.20) has at least one projection (1.19) with up to half the rib height to an outside covered with cooling ribs (1.2). 13. Heat sink according to claim 1, characterized in that cooling fins (1.2) protrude over the width of the base profile (1.1.10) on one or both sides with a length (u) of up to twice the height of the cooling fins (h). 14. Heat sink according to claim 1, characterized in that cooling ribs (1.2) have a rib tab (1.20) with a length (f) of up to twice the cooling rib height (h) on one or both sides. 15. Heat sink according to claim 1, characterized in that the base profile (1.1.22) has at least two flat surface sections (1.102) on different sides. 16. Heat sink according to at least one of claims 1 - 15, characterized in that the base profile (1.1) has insert grooves (1.3) or rib bases (1.4). 17. Heat sink according to claim 16, characterized in that the insert grooves (1.3) or rib base (1.4) are designed to be expanded (1.4.1) or narrowed (1.4.2) towards the outside 18. Heat sink according to claim 16, characterized in that the insert grooves (1.3) or rib bases (1.4.3, 1.4.4) have cutting grooves (1.30), locking grooves (1.25), auxiliary grooves (1.26) on their circumference. 19. Heat sink according to one of claims 16 - 18, characterized in that the groove base is essentially concave (1.15.1) or convex (1.15.2). 20. Heat sink according to at least one of claims 16 - 19, characterized in that a ridge surface (1.31) of the Rib base (1.4.1) is convex. 21. Heat sink according to at least one of claims 16 - 20, characterized in that the groove base has an expansion base (1.48). 22. Heat sink according to claim 21, characterized in that the expansion base (1.48) has a width at the deepest of the groove of up to 0.8 times the clear groove width. 23. Heat sink according to claim 21 or 22, characterized in that the expansion base (1.48) has a height of up to half the groove depth. 24. Heat sink according to one of claims 21 - 23, characterized in that the outer surfaces of the expansion sock (1.48) form an acute angle of up to 90 degrees. 25. Heat sink according to at least one of claims 16 - 24, characterized in that the Emsatznut (1.3) is funnel-shaped and forms an angle between the ridge surface (1.31) and a desk surface (1.46) of 30 ° - 180 °. 26. Heat sink according to at least one of claims 16 - 25, characterized in that the groove spacings or spacings of the rib bases (1.4) are arranged unequally spaced. 27. Heat sink according to at least one of claims 16 - 26, characterized in that a base profile (1.1.11, 1.1.13) has several different shapes of the insert grooves (1.3) or rib bases (1.4.1 - 1.4.4). 28. Heat sink according to at least one of claims 16 - 27, characterized in that a base profile both Has insert grooves (1.3) and rib base (1.4). 29. Cooling body according to claim 1, characterized in that the base profile has a recess (1.102) for mounting electronic components on an outside equipped with cooling ribs (1.2.30). 30. Heat sink according to claim 29, characterized in that the base profile has longitudinal grooves (1.106) on a cooling body side equipped with cooling ribs (1.2.30) as, for example, sliding nut channels for fastening electronic components. 31. Heat sink according to claim 1, characterized in that the base profile (1.1.1, 1.1.2) has longitudinal grooves (1.8a) on the side for fastening rear wall panels (1.8) and / or sealing profiles. 32. Heat sink according to claim 1, characterized in that the base profile (1.1.18) has longitudinal grooves (1.72) on the side, which enable transverse mounting and displacement of the fans (1.74) or the like. allowed. 33. Heat sink according to claim 1, characterized in that the base profile (1.1.6) has a projection (1.16.1, 1.16.2) at least on one side. 34. Heat sink according to claim 1, characterized in that the base profile (1.1.18, 1.1.19) has a profile projection (1.90) at least on one side. 35. Heat sink according to claim 34, characterized in that the profile projection (1.90) essentially forms a wall of a fan antechamber (1.93). 36. Heat sink according to claim 35, characterized in that the profile projection (1.90) with integrated locking lugs (1.91), stop strips (1.97), retaining grooves (1.98), longitudinal grooves (1.92), e.g. as sliding nut channels for fastening fans (1.74) or . Like. Has. 37. Heat sink according to claim 1, characterized in that the surface of the base profile (1.1) is at least partially corrugated, serrated or otherwise long-scannelled has an enlarged surface (including groove walls, groove bottom, base surfaces, etc.). 38. Heat sink according to claim 1, characterized in that the cooling ribs (1.2) are arranged at any parallel and / or unequal distances (s,, s ₂ , ... s _n ) from one another on the base profile (1.1). 39. Heat sink according to claim 1, characterized in that the cooling fins (1.2) are at a distance of multiples of Have rib thickness. 40. Heat sink according to claim 1, characterized in that the cooling ribs (1.2) are fixed in their distances from one another and their rib cross section such that the ratio of the longitudinal to transverse temperature difference in the base plate is from 0.4: 1 to 2.5: 1 trains. 41. Heat sink according to claim 1, characterized in that cooling fins of different thicknesses are mounted on a base profile come into use. 42. Heat sink according to claim 1, characterized in that different versions of the cooling ribs (sheet metal rib, extruded rib) are used on a base profile. 43. Heat sink according to claim 1, characterized in that the heat sink has at least one support plate (1.43) between the cooling fins (1.2). 44. Heat sink according to claim 1, characterized in that the cooling ribs (1.2.4) have rib formations (1.12.1 - 1.12.3) on at least one long edge to be connected to a base profile (1.1.4, 1.1.5), so that These can be inserted, pressed in or caulked transversely or diagonally into the insert grooves (1.3) of the base profile (1.1) or between rib bases (1.4). 45. Heat sink according to claim 44, characterized in that the rib formations (1.12.1 - 1.12.3) essentially form a negative shape to the insert grooves (1.3) and rib bases (1.4). 46. Heat sink according to claim 44 or 45, characterized in that the rib formations (1.12.1 - 1.12.3) widen outwards. 47. Heat sink according to claim 44, characterized in that the rib formations have a locking formation (1.45) projecting essentially to at least one side at the free end. 48. Heat sink according to claim 44, characterized in that the rib formations have an inner corner recess (1.44) on at least one inner corner at their connection to the cooling surface of the cooling rib (1.2.13). 49. Heat sink according to claim 44, characterized in that the rib formations have a lower height than the groove height or the height of the rib base (1.4) of the base profile. 50. Heat sink according to claim 44, characterized in that the cooling ribs (1.2.14) have rib formations (1.12.5, 1.12.6) which are wider than the groove width or the average distance of the rib bases (1.4). 51. Heat sink according to claim 44, characterized in that the rib formations and their connecting edges have a corrugation, serrations (1.33.1) or a comparable edge extension at least in sections or on individual edge sections. 52. Heat sink according to claim 44, characterized in that the rib formations are punched out at an angle to the plumb line on the cooling surface of the cooling ribs. 53. Heat sink according to claim 44, characterized in that the rib formations have a lateral recess, twist or inclined position (1.54) to the cooling surface of the cooling rib (1.2.15). 54. Heat sink according to claim 44, characterized in that the rib formations have a deformation alternating on both sides of the cooling rib (1.2.15). 55. Heat sink according to claim 44, characterized in that the rib formations (1.12) completely or at least partially around an edge parallel to the long edge of the cooling rib (1.2.18) at an angle of up to 120 ° to one side (1.57.1, 1.57.2) or are bent on both sides or alternately. 56. Heat sink according to claim 1, characterized in that the cooling rib (1.2.14) has rib legs (1.50) projecting at any angle on one or both sides of the rib base (1.11). 57. Heat sink according to claim 56, characterized in that the rib legs (1.50) have rib formations (1.59). 58. Heat sink according to claim 57, characterized in that the rib legs (1.50) have rib formations (1.59) alternating with both rib legs (1.50). 59. Heat sink according to claim 44, characterized in that the rib formations have inner recesses (1.32). 60. Heat sink according to claim 44, characterized in that the rib formations at least partially have a wedge-shaped or triangular-shaped chisel recess towards the free end hm, which partially extends into the cooling surface of the cooling rib (1.2.) via a rib thickening (1.23.1 - 1.23.7). 6, 1.2.7). 61. Heat sink according to claim 44, characterized in that the rib formations have at least one locking groove (1.27) parallel to at least one side of a long edge (1.7) of the cooling rib (1.2.6). 62. Heat sink according to claim 44, characterized in that the rib formations (1.12) have at least one transverse caulking groove (1.29) on one or both sides before caulking. 63. Heat sink according to claim 44, characterized in that the rib formations (1.59) have a curvature or bulge (1.55, 1.57.1), teeth (1.57.2) or the like an extension of the contour based on the groove width. 64. Heat sink according to claim 1, characterized in that the cooling rib (1.2.27) has rib incisions (1.84). 65. Heat sink according to claim 64, characterized in that the rib incisions (1.84) have teeth (1.85). 66. Heat sink according to claim 65, characterized in that the formations of the teeth (1.85) are bent on one side or on both sides. 67. Heat sink according to claim 1, characterized in that the cooling ribs (1.2) have rib recesses (1.70) on one or both sides. 68. Heat sink according to claim 1, characterized in that the cooling ribs (1.2.32) have lateral projections (1.110). 69. Heat sink according to claim 68, characterized in that the cooling rib (1.2.32) has at least one lateral projection (1.110) on the opposite side of a rib leg (1.50). 70. Heat sink according to claim 1, characterized in that a plurality of cooling ribs (1.2.32) with lateral projections (1.110) form hollow chambers (1.112) or flow channels after the rib assembly. 71. Heat sink according to claim 68, characterized in that the lateral projections (1.110) have a tongue and groove or. Have a mortise and tenon connection (1.117, 1.118). 72. Heat sink according to claim 1, characterized in that the cooling ribs are H-shaped (1.114) with two outwardly directed rib legs (1.50) or rib thickenings (1.23). 73. Heat sink according to claim 72, characterized in that at least one side of the H-shaped cooling rib (1.114) forms a hollow chamber (1.112) with a base profile (1.1). 74. Heat sink according to claim 72, characterized in that a cooling fin (1.116) consists of several H-shaped Sections are composed and essentially form at least one hollow chamber (1,112). 75. Heat sink according to claim 1, characterized in that the cooling fins (1-2) have at least one lateral Projection (1.110) or mortise and tenon connections (1.117, 1.118) on at least two outer edges rib thickenings (1.23) on one or both sides of the cooling surface of the cooling rib (1.2). 76. Heat sink according to claim 1, characterized in that the cooling fins are made of thin sheet metal (1.120) or a tear-resistant one foil exist. 77. Heat sink according to claim 76, characterized in that the cooling ribs (1.120) are connected to the base profile by means of a clamping strip (1.40.1) or groove stems (1.41.1). 78. Heat sink according to claim 77, characterized in that the clamping strips (1.40.1) or groove stems (1.41.1) have at least one retaining groove (1.122) and a retaining pin (1.123). 79. Heat sink according to claim 76 or 77, characterized in that the clamping strips (1.40.1) or groove stems (1.41.1) have at least one clamping groove (1.124) and one clamping pin (1.124). 80. Heat sink according to claim 1, characterized in that the cooling rib (1.2.6, 1.2.7, 1.2.8, 1.2.9, 1.2.13) has a material accumulation (1.23.1 - 1.23.7) on the rib base ( 1.11) or several long edges (1.7) to be connected to another base profile (l.l. 81. Heat sink according to claim 80, characterized in that the material accumulation (1.23.1 - 1.23.7) is higher than that Groove height or height of the rib base (1.4). 82. Heat sink according to claim 80 or 81, characterized in that the thickness of the material accumulation (1.23) corresponds at most to the rib spacing (1.23.1 - 1.23.7). 82. Heat sink according to claim 80, characterized in that the material accumulation (1.23) is designed on one side (1.23.5, 1.23.7) or on both sides, symmetrically (1.23.4) or asymmetrically (1.23.6). 83. Heat sink according to at least one of claims 80 - 82, characterized in that the material accumulations are additionally connected to one another with a tongue and groove (1.24). 84. Heat sink according to at least one of claims 80 - 83, characterized in that the material accumulation .23) consists of a significantly softer material than the base profile. 85. Heat sink according to claim 1, characterized in that the cooling rib (1.2.6) is made as an extruded profile or rolled profile from a material that conducts heat well and has an accumulation of material through a profile thickening (1.23.1 - 1.23.3) on the rib base (1.11). . 86. Heat sink according to claim 1, characterized in that the cooling rib (1.2.11) is made from a sheet metal that conducts heat well and an accumulation of material is formed by folding an outer edge (1.21) at least once onto one side or on both sides and/or sideways (1.22). having. 87. Heat sink according to claim 1, characterized in that the cooling fin creates an accumulation of material by compressing one Long edge (1.7). 88. Heat sink according to claim 1, characterized in that the cooling fin has an accumulation of material due to an additional material application. 89. Heat sink according to claim 1, characterized in that caulking strips (1.40) or groove stems (1.41) are provided between the cooling ribs (1.2) as an accumulation of material. 90. Heat sink according to claim 89, characterized in that the caulking strip (1.40) has a plurality of layered sheet metal strips. 91. Heat sink according to claim 1, characterized in that the cooling rib (1.2) consists of a significantly harder material than the base profile (1.1). 92. Heat sink according to claim 1, characterized in that the cooling ribs (1.2.20 - 1.2.22) are made from a strip sheet (1.60). 93. Heat sink according to claim 92, characterized in that the strip plate (1.60) is bent in a serpentine shape on the front and back of the heat sink. 94. Heat sink according to claim 92 or 93, characterized in that the strip sheet (1.60) has several or individual sheet metal recesses (1.61) through which air flows from the front to the back of the heat sink between two cooling fins (1.2.20 - 1.2.22 ) make possible . 95. Heat sink according to claim 94, characterized in that at least one sheet metal bridge (1.62) connects two cooling fins (1.2.20, 1.2.21) on the front and back of the heat sink. 96. Heat sink according to claim 94 or 95, characterized in that two sheet metal bridges (1.62.1, 1.62.2) connect two cooling fins (1.2.20, 1.2.21) on the two long edges (1.65) of the strip sheet (1.60) with each other. 97. Heat sink according to claim 92, characterized in that the strip plate (1.60) has several essentially laterally parallel and / or essentially directed towards the long edge (1.65) of the cooling rib (1.2.21, 1.2.22), several sheet metal recesses (1.64.) located one behind the other ) on ice. 98. Heat sink according to claim 92, characterized in that the rib recesses (1.64) have, in their largest dimension, essentially a preferred direction from the base profile to an outside of the cooling ribs. 99. Heat sink according to claim 92, characterized in that the strip plate (1.60) has an edge boundary to the base profile (1.1.16) by a contact edge (1.63). 100. Heat sink according to claim 97, characterized in that the strip plate (1.60) has an edge boundary to the outside by a long edge (1.65). 101. Heat sink according to claim 100, characterized in that the strip plate (1.60) has recesses in the long edge (1.65) to form cooling needles (1.67). 102. Heat sink according to claim 92, characterized in that the strip sheet (1.60) is bent in a caterpillar shape. 103. Heat sink according to claim 92, characterized in that the strip sheet (1.60) has a plurality of essentially laterally parallel and / or, essentially directed towards the bending edge (1.68) of the cooling rib (1.2), a plurality of sheet metal recesses (1.64) located one behind the other. 104. Heat sink according to claim 103, characterized in that the rib recesses (1.64) essentially have a preferred direction in their largest dimension Point the base profile (1.1.17) towards a bending edge (1.68) of the cooling ribs (1.2.22). 105. Heat sink according to claim 103 or 104, characterized in that the strip sheet has recesses in the Bending edge (1.68) with the formation of cooling needles (1.67). 106. Heat sink according to claim 92, characterized in that the strip plate (1.60) has rib bridges (1.66). Caulking m has the insert grooves (1.3) of the base profile (1.1.17). 107. Method for producing a heat sink for cooling elements, in particular semiconductor elements, motors and aggregates, consisting of a base profile (1.1 1.1.24) and cooling ribs (1.2 - 1.2.33, 1.120) connected to it transversely or obliquely, from the base profile Rib base (1.4) protrude and/or the base profile has insert grooves (1.3), the surfaces of which are at least partially attacked laterally by at least the outer edges and/or outer surfaces of the rib formations (1.12), characterized in that the rib formations (1.12) are connected to the base profile ( 1.1) be caulked. 108. The method according to claim 107, characterized in that rib material is caulked transversely against groove walls (1.14.1 - 1.14.3) or base flanks (1.5). 109. The method according to claim 107 or 108, characterized in that rib material against a groove base (1.15) and/or is caulked against a ridge surface (1.31) of the rib base (1.4.1). 110. The method according to claims 107 - 109, characterized in that during caulking rib material m Undercuts (1.30), locking grooves (1.25) and other auxiliary grooves (1.26) are pressed in and these are at least partially filled. 111. The method according to claim 107, characterized in that during caulking, rib material is caulked against a neighboring rib. 112. The method according to claim 107, characterized in that when caulking rib material with rib material neighboring rib is caulked. 113. Method according to at least one of claims 107 - 112, characterized in that a plastic deformation occurs during caulking. 114. Method according to at least one of claims 107 to 113, characterized in that the caulking is carried out using caulking tools such as chisels (1.28), caulking plates, rollers or the like. 115. The method according to claim 107, characterized in that during caulking the material is displaced by means of caulking tools (1.28) which are guided parallel to the cooling surface of the cooling ribs (1.2). 116. The method according to claim 107, characterized in that the caulking takes place between two cooling fins (1.2). 117. The method according to claim 107, characterized in that the caulking takes place of an individual cooling rib (1.2). 118. The method according to claim 107, characterized in that caulking a cooling rib (1.2.6) with a fork-shaped caulking tool, for example chisel (1.28.1, 1.28.2) or roller with central groove, which includes the cooling rib on both sides. 119. The method according to claim 107, characterized in that several cooling ribs (1.2.7) are caulked with a comb-shaped caulking tool, e.g. chisel (1.28). 120. The method according to claim 119, characterized in that several cooling ribs (1.2.7) are caulked using a comb-shaped caulking tool and a longitudinal groove in the base profile. 121. The method according to claim 107, characterized in that several ribs or rib packages are caulked at the same time. 122. The method according to claim 107, characterized in that during caulking the material is displaced by means of chisels (1.28) or caulking plates, which are guided parallel to the extruding direction of the base profile (1.1). 123. The method according to claim 107, characterized in that the caulking of the cooling ribs takes place simultaneously on at least two outer edges of the cooling rib. 124. The method according to claim 107, characterized in that the caulking of individual cooling ribs takes place one above the other. 125. The method according to claim 107, characterized in that the caulking of several cooling ribs (1.2) takes place one above the other at the same time. 126. The method according to claim 107, characterized in that the caulking additionally caulks two cooling ribs with tongue and groove together. 127. The method according to claim 107, characterized in that caulking tools engage in a wedge shape or conical manner. 128. The method according to claim 107, characterized in that caulking tools push primarily flat material to the side against the base profile (1.1) (Fig. 16aA). 129. The method according to claim 107, characterized in that caulking tools caulk the rib formations (1.12) circumferentially at points or in sections to the base profile (1.1; (Fig. 16aB). 130. The method according to claim 107, characterized in that caulking tools caulk the rib formations (1.12) on the edge against the base profile (1.1) (Fig. 16aC). 131. The method according to claim 107, characterized in that the caulking of the rib formations takes place in transverse caulking grooves (1.29). 132. The method according to claim 107, characterized in that the caulking of the rib formations in longitudinal grooves (1.13) takes place. 133. The method according to claim 107, characterized in that the caulking takes place in recesses (1.32) of the rib formations. 134. The method according to claim 107, characterized in that at least two base profiles essentially face each other in a metal cage or such tool and that when the rib formations (1.12) of the cooling rib (1.2) are caulked, these are pressed against the cage walls and are firmly enclosed by them. 135. The method according to claim 107, characterized in that rib formations (1.12) are pressed essentially parallel to the cooling surfaces of the cooling ribs (1.2) into the insert grooves (1.3) or between rib bases (1.4) and these transversely using the material elasticity and the buckling resistance print against the groove walls (1.14) or base flanks (1.5) and/or against the groove base (1.15) and/or the ridge surfaces (1.31) of the base profile (1.1). 136. The method according to claim 107, characterized in that rib formations (1.12) are essentially inserted into the insert grooves or between rib bases or pushed laterally and with transverse positions and spreading of the rib formations (1.55, 1.54) laterally against the groove walls (1.14) or base flanks ( 1.5) and/or pressed against the base profile. 137. The method according to claim 107, characterized in that several cooling ribs (1.2.15) are placed one behind the other, with the rib formations (1.54, 1.55) alternating between two adjacent cooling ribs touching each other along at least one outer edge of the cooling rib, pressed together at the same time using caulking tools and the rib formations (1.54, 1.55) are wedged or pressed transversely against the groove walls (1.14) or base flanks (1.5). 138. The method according to claim 137, characterized in that outer edges of the rib formations (1.12) at Pressing in the cooling ribs (1.2) m cut into the groove walls (1.14) or base flanks (1.5). 139. The method according to claim 107, characterized in that the cooling rib (1.2) when connected to the base profile (1.1) comes to rest on base tips or ridge surfaces (1.31) of the base profile (1.1). 140. The method according to claim 107, characterized in that caulking tools (1.28.7) caulk sections of the rib legs (1.50) in a direct process with plastic deformation in insert grooves (1.3) of the base profile (1.1). 141. The method according to claim 107, characterized in that caulking tools (1.28.6) notch sections of the rib leg (1.50) m the width of the insert grooves (1.3) or distance between the rib bases (1.4) and at the same time into the insert grooves (1.3) of the base profile ( 1.1) lift. 142. The method according to claim 107, characterized in that cooling ribs (1.2.17) with a base profile recess (1.58) is placed over the base profile and the folded rib formations (1.57) are caulked against one of the surface sections of the base profile. 143. The method according to claim 107, characterized in that electronic components are pressed against the base profile (1.1) by means of the cooling ribs (1.2). 144. Method for producing a heat sink for cooling elements, in particular semiconductor elements, motors and units, consisting of a base profile (1.1 1.1.24) and connected to it transversely or obliquely Cooling ribs (1.2 - 1.2.33, 1.120), whereby from the base profile Rib base (1.4) protrude and / or the base profile has insert grooves (1.3), the surfaces of which are at least from the outer edges and / or outer surfaces of the Rib formations (1.12) are at least partially attacked laterally, characterized in that Cooling ribs (1.2) are clamped onto the base profile (1.1) while generating a tensile stress in the rib formations (1.12) connected to the base profile (1.1). 145. Method for producing a heat sink for cooling elements, in particular semiconductor elements, motors and aggregates, consisting of a base profile (1.1 1.1.24) and cooling ribs (1.2 - 1.2.33, 1.120) connected to it transversely or obliquely, from the base profile Rib base (1.4) protrude and/or the base profile has insert grooves (1.3), the surfaces of which are at least partially attacked laterally by at least the outer edges and/or outer surfaces of the rib formations (1.12), characterized in that the cooling ribs (1.2) are in a simple manner the base profile (1.1) can be clipped or attached (e.g. as a side housing wall). 146. Heat sink for cooling elements, in particular semiconductor components, motors and aggregates, in particular at least partially made of extruded aluminum or other light metal with cooling ribs connected to the base plates at a distance from one another and projecting therefrom, characterized in that at least two separate base profiles (2.1 - 2.1.4) are spaced apart from one another and are firmly connected to one another in a force-fitting and/or form-fitting manner by means of separate cooling ribs (2.3) and the normals (ni - n) of at least one flat mounting surface of two adjacent base profiles point into a common half-space. 147. Heat sink according to claim 146, characterized in that at least the free rib edges (2.6.1 - 2.6.3) on one or both sides of a base profile (2.1) at least partially by means of a cover plate (2.2.1 - 2.2.3) or the like are related. 148. Heat sink according to one of claims 146 - 147, characterized in that between two spaced Base profiles (2.1) the installation of at least one fan (2.5) is provided. 149. Heat sink according to one of claims 146 - 148, characterized in that at least one cover plate (2.4) at least partially uses an outside of the heat sink. 150. Heat sink according to one of claims 146 - 148, characterized in that at least one finger-like air deflection plate reaching between the cooling ribs deflects the flow to an outside of the heat sink. 151. Heat sink for cooling elements, in particular semiconductor components, motors and aggregates, in particular at least partially made of extruded aluminum or other light metal with cooling fins connected at a distance from one another to at least one base plate and protruding therefrom with essentially L-shaped or T-shaped Formation of the connecting edge, which is fixed in insert grooves or similar recesses in the base plate by deforming a caulking rib, characterized in that two adjacent grooves (5.3, 5.8) of the base plate (5.1) form a caulking rib (5.4 - 5.4.7), which at least in sections printed over to one side and caulked at least against a top side (5.12) of an L-shaped (5.10) or T-shaped (5.11) design of the rib base (5.21) of at least one cooling rib (5.2 - 5.2.4). 152. Heat sink according to claim 151, characterized in that two adjacent insert grooves (5.3) define a caulking rib. 153. Heat sink according to claim 151, characterized in that an insert groove (5.3) and an auxiliary groove (5.8) define a caulking rib. 154. Heat sink according to claim 151, characterized in that an auxiliary groove (5.8) between two insert grooves (5.3) determine a caulking rib (5.4) and a supporting rib (5.7). 155. Heat sink according to claim 151, characterized in that an auxiliary groove (5.8) defines two caulking ribs between two insert grooves (5.3). 156. Heat sink according to claim 155, characterized in that the two caulking ribs are printed and caulked to the side of the adjacent insert grooves (5.3.1). 157. Heat sink according to claim 156, characterized in that the two caulking ribs (5.4.2, 5.4 158. Heat sink according to one of claims 152 and 153, characterized in that the caulking ribs (5.4.6, 5.4.7) have a height of at least the width of the insert grooves (5.3). 159. Heat sink according to claim 157, characterized in that the caulking rib (5.4.7) is at least partially caulked against the cooling surface (5.22) of the cooling rib (5.2) projecting from the base surface (5.1). 160. Heat sink according to one of claims 151 - 159, characterized in that the cooling rib (5.3) has at least one locking recess (5.20) on the rib base (5.21) on the side of the caulking rib. 161. Heat sink for cooling elements, in particular semiconductor components, motors and aggregates, in particular at least partially made of extruded aluminum or other light metal. Cooling elements connected at a distance from one another to at least one base plate and protruding therefrom Cooling ribs, the base plate having ribs on at least one surface, with which a cooling rib is fixed by deforming parts of the cooling rib close to the ribs, characterized in that the cooling rib (6.2) has a cross-sectional area essentially across the width of the base plate (6.1). L-shaped formation (6.6) and with a development essentially corresponding to the surface contour of the ribs (6.3) and the base plate (6.1). 162. Heat sink according to claim 161, characterized in that formations (6.6) are formed in sections or alternately on opposite sides of the cooling rib (6.2). 163. Heat sink according to at least one of claims 161 - 162, characterized in that the part of the rib formation (6.6.9) located between two ribs (6.3.1, 6.3.2) is designed to be longer than the clear distance between the ribs (6.3 - 6.3.2) at the bottom of the groove in the base plate is. 164. Heat sink according to at least one of claims 161 - 163, characterized in that the clear height h6 of the formations (6.6) is greater than the height Hr of the rib (6.3). 165. Method for producing a heat sink for cooling elements, in particular semiconductor components, motors and aggregates, in particular at least partially made of extruded aluminum or other light metal with cooling fins connected at a distance from one another to at least one base plate and projecting therefrom, the base plate being attached to at least a surface has ribs with which a cooling rib is fixed by deforming parts of the cooling rib close to the ribs, characterized in that that chisels (6.7.1, 6.7.2) press the formations (6.6) of the cooling fin (6.2) at least partially against the fin surfaces (6.4) of the ribs (6.3) of the basic profile (6.1) with plastic deformation of the formations (6.6) of the cooling fin (6.2) and/or rib (6.3) of the base profile (6.1). 166. The method according to claim 165, characterized in that chisels (6.7.1, 6.7.2) press the formations (6.6) of the cooling fin (6.2) onto the ribs (6.3) of the base profile (6.1) and the cooling fin (6.2) under Introduce a tensile stress in the legs (6.12) of the formations (6.6) in the direction of the groove base (6.8) of the base profile (6.1) and caulk it with the same. 167. The method according to one of claims 165 - 166, characterized in that chisels (6.7.1) intervene between two adjacent ribs (6.3.1, 6.3.2) and the formations (6.6) of the cooling fin (6.2) each against one side the surfaces (6.4.1, 6.4.2) of two ribs (6.3) caulked. 168. Method according to one of claims 165 - 166, characterized in that a shape (6.6.10) of the cooling fin (6.2) is caulked on both sides against the surface (6.4) of a rib (6.3) by a chisel (6.7.2). . 169. Heat sink for cooling elements, in particular semiconductor components, with a base plate (7.1) which is provided with a number of main grooves (7.2) on at least one surface (7.11), and a number of cooling fins (7.3) which are on the The connecting edge to a base plate (7.1) has a base (7.6) with which the cooling fins (7.3) are fastened in the main grooves (7.2) of the base plate (7.1), characterized in that the cooling fins on the base have two laterally projecting and in main grooves ( 7.2) reaching down the base plate (7.1). Have legs (7.4 - 7.5.2), which are plastically deformed by chisels (7.8) or similar tools that enter between the cooling ribs (7.3) and caulked in the main grooves (7.2) of the base plate (7.1). 170. Heat sink according to claim 169, characterized in that the legs (7.5.1, 7.5.2) of two adjacent cooling ribs (7.3) are pressed into a common main groove (7.2) of the base plate (7.1). 171. Method for producing a heat sink for cooling elements, in particular semiconductor components, with a base plate (7.1), which is provided with a number of main grooves (7.2) on at least one surface (7.11), and a number of cooling fins (7.3) , which have a base (7.6) with two laterally projecting legs (7.4 - 7.5.2) on the connecting edge to a base plate (7.1), which extend at least partially down the main grooves (7.2) of the base plate (7.1), characterized in that that the legs (7.4) are attacked by chisels and are plastically caulked towards the bottom of the groove and laterally against at least one groove wall of a main groove (7.2). 172. Heat sink, consisting of at least one cooling element (8.25) and a separately extruded edge Rib spacing profile (8.3), which determines the distance between a large number of cooling ribs projecting from one another from the hollowness (8.25). (8.2) at the free ends (8.11) of which is fixed to one another and is firmly connected to the cooling element, characterized in that the rib spacing profile (8.3) protects the free ends (8.11) of the cooling ribs (8.2) against lateral deformation on at least one side of the cooling rib (8.2) 8.2) attacks. 173. Heat sink according to claim 172, characterized in that the free end (8.11) of a cooling rib (8.2) in one Insert groove (8.13) of the rib spacing profile (8.3) is fixed. 174. Heat sink according to claim 172, characterized in that the free end (8.11) of a cooling fin (8.2) is attacked laterally by at least one short groove leg (8.12) projecting from the rib spacing profile (8.3). 175. Heat sink according to one of claims 172 to 174, characterized in that the free end (8.11) is one Cooling fin (8.2) is clamped, pressed or caulked in the fin spacing profile (8.3) or in an insert groove (8.13) or between two groove legs (8.12). 176. Heat sink according to one of claims 172 to 175, characterized in that the free end (8.2) of the cooling fin (8.2) in the fin spacing profile (8.3) by forming locking grooves (8.14) or the like on the groove leg (8.12) or insert groove (8.13 ) is locked into place. 177. Heat sink according to one of claims 172 to 176, characterized in that the rib spacing profile (8.3) has open or closed screw channels (8.23.1) and 8.23.2) on the left (8.24.1) and right side (8.24.2). . 178. Heat sink according to claim 177, characterized in that the open screw channels (8.23.1) and (8.23.2) are opened into the interior of the cooling unit or to an outside of the cooling unit (8.25). 179. Heat sink according to one of claims 172 to 178, characterized in that the rib spacing profile (8.3) has at least one side leg (8.4.1) or (8.4.2) parallel to the cooling fins (8.2). 180. Heat sink according to claim 179, characterized in that the rib spacing profile (8.3) forms a section of the cooling body housing of the cooling unit. 181. Heat sink according to one of claims 179 and 180, characterized in that the rare legs (8.4) of the rib spacing profile (8.3) and the rare legs (8.5) of the base profile (8.1) at the opposite ends of the side legs (8.4.1/8.5. 1) or (8.4.2/8.5.2) have a mutual clip or locking design that enables them to be plugged together, clipped together or another suitable mechanical connection without the use of additional connecting elements. 182. Heat sink according to one of claims 179 to 181, characterized in that the side legs (8.4) of the rib spacing profile (8.3) and the rare legs (8.5) of the base profile (8.1) on the mutually directed leg ends (8.4.1/8.5.1) or (8.4.2/8.5.2) has a groove formation (8.20) and spring formation (8.21), which enables them to be plugged together, clipped together or mutually caulked or pressed. 183. Heat sink according to one of claims 179 to 182, characterized in that the rib spacing profile (8.3) is firmly pressed or caulked to the base profile (8.1).