EP2832464A1 - Élément lamellaire, procédé de fabrication d'un élément lamellaire et outil de fabrication de l'élément lamellaire - Google Patents

Élément lamellaire, procédé de fabrication d'un élément lamellaire et outil de fabrication de l'élément lamellaire Download PDF

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Publication number
EP2832464A1
EP2832464A1 EP14179522.9A EP14179522A EP2832464A1 EP 2832464 A1 EP2832464 A1 EP 2832464A1 EP 14179522 A EP14179522 A EP 14179522A EP 2832464 A1 EP2832464 A1 EP 2832464A1
Authority
EP
European Patent Office
Prior art keywords
lamellar
pressing force
lamellar element
lamella
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14179522.9A
Other languages
German (de)
English (en)
Other versions
EP2832464B1 (fr
Inventor
Clemens David
Rupert Jäger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DBK David and Baader GmbH
Original Assignee
DBK David and Baader GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DBK David and Baader GmbH filed Critical DBK David and Baader GmbH
Publication of EP2832464A1 publication Critical patent/EP2832464A1/fr
Application granted granted Critical
Publication of EP2832464B1 publication Critical patent/EP2832464B1/fr
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/022—Making the fins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/08—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by combined methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins

Definitions

  • the invention is based on a lamellar element according to the preamble of claim 1 and a method for producing a lamellar element.
  • the invention is based on a tool for the production of a lamella element.
  • heating devices are used for heating of an interior and an engine of the motor vehicle.
  • such heaters are also suitable for other applications in a wide range of applications, for example in the field of domestic installations (room air conditioning), industrial equipment and the like.
  • PTC heating elements positive temperature coefficient, positive temperature coefficient, PTC thermistor
  • lamella elements which are used for heat dissipation.
  • the heat dissipation of the lamellar elements is supported by an air flow flowing around the lamellar elements, which is generated by a blower.
  • a heating device with lamellar elements or corrugated rib elements is known.
  • a respective lamella element has a multiplicity of lamellae connected to one another via lamella arcs or connecting sections.
  • Lamellar arches of one side of the lamellar element are fastened to a radiator panel.
  • the radiator plate about the radiator plate, the fin element is further supported in its longitudinal direction. With the radiator plate, the lamellar element is fixed in position, both in its longitudinal and in its transverse direction. This makes it relatively easy to install in the heater.
  • an additional component namely the radiator sheet, is required for fixing the position of the lamella element.
  • Another heating device is disclosed.
  • This has a lamellar element which has a plurality of interconnected via connecting portions lamellae. Adjacent connecting portions are brazed together to increase rigidity of the fin member. The soldering of the lamellar element leads disadvantageously to a high production cost.
  • the invention has for its object to provide a fin element that is simple and inexpensive to produce, device design is simple and easy to install. Another object of the invention is to provide a simple and inexpensive method of manufacturing such a fin element. In addition, the invention has the object to provide a simple ausgestaltetes tool for forming the fin element.
  • the object is achieved with regard to the lamellar element according to the features of claim 1 and with regard to the method according to the features of claim 10. With respect to the tool, the object is achieved according to the features of claim 13.
  • a lamellar element or a corrugated rib is designed as a meandering band. Viewed in the tape direction, the lamellae has alternately a connecting portion for connecting two blades and a blade.
  • the lamellar element is preferably acted upon by a pressing force for plastically deforming at least the force-loaded connecting sections via a plurality of connecting sections or over all connecting sections or substantially all connecting sections.
  • lamellae of at least a subset of the lamellae or all fins are provided with one or more beads.
  • the application of the pressing force during production leads to a significantly increased rigidity of the lamella element.
  • a rigidity increase leads to a better handling of the lamellar element and, accordingly, to a simpler mountability.
  • a "popping" of the fin element is avoided.
  • An introduction of beads in slats also leads to a significant increase in rigidity of the fin element. If a lamellar element is subjected to a pressing force during production and if it has additional beads, this combination leads to an exceedingly high rigidity.
  • a partial area is plastically deformed in the pressing-force-loaded connecting sections by the application of the pressing force, with the result that the remaining area can essentially remain in its original shape.
  • the entire connecting portion must be deformed in order to achieve a sufficiently high rigidity of the fin element. Since not the entire connecting portion is deformed, manufacture of the fin member is also simplified. Furthermore, it has been shown that such a configuration is particularly well suited for a continuous manufacturing process of the lamellar element, in which this example is simply guided by a tool with a tapered opening, which is designed such that only the portions are deformed. The resulting pressing forces are comparatively low.
  • the partial area of a connecting section is preferably a free edge area.
  • both edge regions of a respective press-force-loaded connecting portion are plastically deformed, which further increases rigidity and enables a symmetrical stiffening of the lamella element.
  • a respective pressing force-loaded connecting portion can be designed arcuately seen between its edge regions in cross-section.
  • the connecting portion can thus, for example, maintain its original shape in its middle region, which results in that a maximum height of the lamellar element corresponds to a height of known non-press-loaded lamellar elements.
  • the dimensions of the prior art can essentially be maintained, with which a heating device which uses these lamellar elements does not have to be redesigned.
  • a respective deformed edge region is simply flattened, with which the associated tool can be easily configured.
  • all connecting portions are plastically deformed.
  • the loading of the lamellar element during manufacture with the pressing force can lead to a planar surface in the region of its connecting sections, whereby unevenness can be compensated.
  • This is extremely advantageous for applying, for example, PTC heating elements, since a contact or contact surface between the PTC heating elements and the fin element is substantially planar. In this way, furthermore, a high electrical conductivity and high thermal conductivity is created between the PTC elements and the fin element.
  • connecting portions are preferably - in particular in all embodiments - two mutually spaced functional sides of the fin element formed, between which the lamellae are arranged. In the production of the lamellar element, this is then acted upon simultaneously from both sides of the function with the pressing force from the outside.
  • the lamellar element can be produced in the longitudinal direction with a further force, in particular a holding force for holding the lamellar element or a pressing force for upsetting the lamellar element, be acted upon.
  • This further force is then directed approximately in a direction parallel to the function pages extending direction. It has been shown that by this measure, a rigidity of the fin element can be further increased and / or the fin element can be securely held during manufacture.
  • a distance between the connecting portions of the function sides can be reduced, whereby the fin element has a compact design.
  • At least the connecting sections are plastically deformed by the application of the pressing force applied via the connecting sections.
  • the connecting sections are deformed by the application of the pressing force from a curved shape into an at least partially planar shape.
  • the vertexes connecting vertexes are leveled.
  • a compression of the connecting portions may be, for example, between 0.2 and 0.5 mm by the Presskraftbeetzschlagung over the connecting portions.
  • a radius may be provided in the transition region between a respective connecting portion and the blades connected thereto.
  • a receiving space is formed between adjacent connecting sections, in which adhesive can be displaced during the gluing of, for example, PTC heating elements with the lamella element. This allows better power input and optimizes manufacturing.
  • a lamella together with its two connecting sections, has an approximately Z-shape, viewed in a flow direction of the lamellar element.
  • the louvers interconnected by a connecting portion are approximated with their end portions remote from the connecting portion. Additionally or alternatively, the end portions may abut each other.
  • the approximate or abutting end portions of the slats inserted therein beads of each adjacent slats in sections dive into each other, causing the slats over their beads then overlap each other. This leads to an additional stability of the lamellar element.
  • At least the slats of the subset or all slats have three beads. These can be configured approximately equal. Furthermore, they can extend over a majority of the lamella.
  • the lamellae of the subset or in all the lamellae each have a first bead from its one side face and a second bead or two second beads from its other side face.
  • a respective bead preferably extends somewhat parallel to a longitudinal edge of its lamella. This configuration and arrangement of the beads has proven to be extremely advantageous in order to increase the rigidity of the fin element.
  • the corrugations can each be designed to be simply elongated in terms of device technology and, for example, to be slightly spaced from the connecting sections. With a plurality of beads in a lamella, these are then approximately at a parallel distance from one another. A distance between the beads is preferably substantially the same. It is conceivable that with three beads the middle bead divides its longitudinal edges with the side beads.
  • two lateral beads are introduced from one side face and an average bead is inserted from the other side face into it.
  • the beads are formed such that between each two adjacent slats, a flow cross-section as seen in the flow direction substantially remains the same. That is, in a plane that extends approximately parallel to the functional sides of the lamella element through the slats, a distance between each two adjacent slats is substantially the same. As a result, a pressure loss is avoided in a flow through a fluid through the fin element.
  • the beads in each lamella are preferably introduced in approximately the same position. Arches of beads of the same position then have a same orientation. As a result, the flow cross-section in the through-flow direction of the fluid between two adjacent lamellae remains essentially the same due to the essentially identically configured and identically arranged beads of the lamellar element.
  • the connecting sections of a respective side of the lamellar element are successively acted upon by the pressing force in the direction of the lamellae, which would lead to a continuous production. It is also conceivable that in each case at least two opposite connecting portions can be acted upon at about the same time with the pressing force.
  • This continuous production takes place, for example, by way of two rollers, between which the lamellar element is passed after it has been converted into a corrugated rib. Or it may be provided with a tapered opening in the tooling a tool.
  • the band is preferably embossed before laying to the corrugated fin.
  • the band is deformed such that the connecting portions are curved at least in sections before the loading of the lamella element with the pressing force.
  • the connecting sections thus each extend approximately along a curve when viewed in the direction of the belt.
  • the application of the pressing force via the connecting sections is then preferably carried out in the further embodiment in such a way that the curved connecting sections are flattened and the lamellar element is thus leveled.
  • the latter can be subjected to compression in the longitudinal direction by a force, in particular pressing force, in order to further increase rigidity.
  • the force acting in the longitudinal direction on the lamellar element is a holding force which is applied before and / or at about the same time for loading the lamellar element with the pressing force.
  • the fin element by the holding force be longitudinally fixed and then pressed over the connecting portions or the lamellar element can be compressed in the longitudinal direction and held in its defined length (fixed) and are then pressed over the connecting portions.
  • a tool for producing the fin element is then suitably fixed in the end position before the pressing force is applied via the connection sections.
  • the lamellar element can be transversely fixed before and / or simultaneously to the application of the pressing force from both sides.
  • the transverse fixing takes place in the transverse direction, that is approximately in the direction of flow through the lamellar element or in the direction of the width defined by the lamella element. Due to the transverse fixing a "jumping out" of the compressed lamellar element is avoided from the tool for production.
  • a heating element in particular a PTC heating element, can be arranged at least on one functional side of the lamella element.
  • the heating element is preferably glued or clamped to the lamella element.
  • a tool for producing a lamellar element according to one of the preceding aspects.
  • the tool preferably has a one-part or multi-part tool body with an opening through which the lamellar element can be passed for forming, wherein an opening cross-section of the opening is configured such that the lamellar element is acted upon by a pressing force.
  • the sides of the lamellar element can be continuously depressed and stiffened.
  • the tool may be formed, for example, as a kind of four-sided drawing wedge.
  • rollers for forming the lamellar element it would be conceivable to provide rollers for forming the lamellar element.
  • the tool is arranged at the end of a continuous production of the lamellar element.
  • the opening has one or more edges, for example extending in a plane, for forming the partial regions of the lamellar element.
  • the opening may have an approximately longitudinally extending wedge surface for the continuous pressing-force application.
  • the opening preferably extends along a longitudinal direction, wherein a cross section of the opening seen in the longitudinal direction (in particular by the wedge surfaces) is reduced or tapered.
  • the opening is preferably designed such that the lamella element guided through the passage recess bears against the one wedge surface or the plurality of wedge surfaces of the opening during the pressing force application (preferably only) with its partial regions to be formed.
  • the tool has wedge surfaces or edges for the entire forming of the connecting portion according to the further embodiment of the lamella element.
  • two, three or four wedge surfaces or edges are provided in order to reshape two, three or all corner regions of the lamella element accordingly.
  • the lamellar element 1 is configured meandering. It is made of a laid band, wherein in the band direction alternately a blade 2 and a connecting portion 4 are formed.
  • the connecting sections 4 of the lamellar element 1 then form a first and second functional side 6 and 8 of the lamella element 1.
  • the lamellar element 1 is acted upon via its connecting sections 4 with a flat pressing force which acts approximately normal to the functional sides 6 and 8.
  • the connecting portions 4 are plastically deformed and each have an approximately flat outer surface 12 having flat portion 14.
  • the outer surfaces 12 of the connecting portions 4 on a respective functional side 6 and 8 then each span a plane.
  • the flat sections 14 each extend over the entire width of the lamellar element 1 in a flow direction 16.
  • a width of the flat portions 14 seen transversely to the flow direction 16 is substantially constant.
  • a respective lamella 2 is connected to its respective connecting portion 4 via a curved portion 18a and 18b, respectively.
  • a respective curved portion 18a and 18b extends from the flat portion 14 to the respective end portion 10b and 10a of the blades 2a and 2b, respectively.
  • a receiving space 20 is formed between each two adjacent connecting portions 4a and 4b. If, for example, a PTC heating element is attached to the functional side 6 and / or 8 via an adhesive, then this adhesive can be displaced into the receiving spaces 20 between the connecting sections 4.
  • three beads 22, 24 and 26 are introduced. These are each elongated and extend in parallel distance to the longitudinal edge 28 of the blade 2, in which they are introduced.
  • the beads 22 to 26 are spaced from each other.
  • adjacent beads 22 to 26 of a blade 2 share their longitudinal edges 30a to 30d.
  • the beads 22 to 26 seen in the flow direction 16 are equally spaced from each other.
  • the beads 22 and 26 are introduced in an outer region of the blade 2 and the bead 24 is formed between these beads 22 and 26 in the middle of the blade 2.
  • a distance of the beads, seen in the flow direction 16, to each other corresponds approximately to the distance of the outer beads 22 and 26 to its adjacent longitudinal edge 28 and 32.
  • the beads 22 to 26 preferably each end in front of the connecting portion 4 of her lamella 2. However, it is conceivable the beads 22 to 26 extend into one or both connecting sections 4 of their lamella 2. Furthermore, it is conceivable that they additionally extend into one or both flat sections 14 of the connecting section 4 of their lamella 2.
  • the two outer beads 22 and 26 of a respective blade 2 are introduced from a first side surface 34 and the middle bead 24 from the other side surface 36 ago.
  • the beads 22 and 26 thus have a bulge, which is oriented approximately opposite to the bulge of the central bead 24.
  • a respective bead 22 to 26 is based on the central bead 24 in FIG. 2 explained in more detail.
  • a respective bead 24 has a bead bottom 38. From this extend approximately V-shaped to each other, the longitudinal edges 30b and 30c, with their distance increases with increasing distance from the bead base 38.
  • the bead 24 has two transverse flanks 40a and 40b, which also extend starting from the bead base 38 in a V-shaped manner with each other, their distance increasing with increasing distance from the bead base 38.
  • the adjacent longitudinal and transverse flanks 30b, 30c, 40a, 40b are each connected to one another via a curved flank 42.
  • the beads 22 and 26 are thus each designed approximately cup-shaped.
  • the beads 22 and 26 of a respective blade 2 are designed substantially the same and also positioned at the respective slats 2.
  • the beads 22 to 26 of one lamella 2a can dip into the beads 22 to 26 of the other lamella 2b in sections.
  • a relative displacement of the slats 2a and 2b, in particular in the direction of flow 16, is thus made more difficult, as a result of which a rigidity of the slat element 1 is increased.
  • the lamellar element 1 is shown prior to the application of a pressing force via its connecting portions 4.
  • the connecting sections 4 are each curved. Seen in cross section, they each extend approximately in sections circumferentially around a circle.
  • the beads 22 to 26 for each lamella 2 are introduced into a band which consists in particular of metal, preferably of aluminum or an aluminum alloy. This is done for example by a stamping process. Subsequently, the band is bent, so that it is about the embodiment according to the Figures 3 and 4 having.
  • a band which consists in particular of metal, preferably of aluminum or an aluminum alloy. This is done for example by a stamping process. Subsequently, the band is bent, so that it is about the embodiment according to the Figures 3 and 4 having.
  • the beads 22 to 26 in FIG. 4 has the fin element 1 compared to a fin element without beads an extremely high rigidity. The rigidity can be further increased if the lamellar element 1 of its function pages 6 and 8, see FIG. 4 , flat with one Pressing force is applied, whereby the connecting portions are plastically deformed and the shape according to FIG. 2 to reach.
  • FIG. 4 flat with one Pressing force is applied, whereby the connecting portions are plastically deformed and the shape according
  • pressing forces 44 and 46 are directed approximately transversely to the flow direction 16 and face each other.
  • it is acted upon in the longitudinal direction by its end faces 48 and 50 FIG. 3 acted to avoid a spread apart of the slats 2 in the application of force with the pressing forces 44 and 46.
  • the lamellar element 1 can still be compressed over the end faces 48 and 50, that is, plastically deformed in the longitudinal direction.
  • a louver element arrangement 52 is shown. This has at least one fin element 1, which is firmly connected to heating elements 54 to 58.
  • the lamella element arrangement 52 has a further lamella element 1a.
  • the PTC heating elements 54 to 58 are then on their large surfaces with a respective functional side 6, 8, see FIG. 1 , the lamellar element 1 or 1a connected.
  • adhesive is applied to the large areas of the PTC heating elements and / or to the functional sides 6, 8 of the lamellar elements 1, 1a to be connected thereto, and then the parts 54 to 58, 1 and 1a to be joined are arranged relative to one another. Excess adhesive may then enter the receiving spaces 20, of which in the FIG. 5 two exemplified are provided with a reference numeral displaced.
  • FIG. 7 is exemplified a tool 60 for applying the blade element 1 with the pressing forces.
  • the tool 60 has two seen in cross-section L-shaped tool parts 62 and 64.
  • a respective tool part 62 and 64 has a first leg 66 and a second leg 68.
  • the fin element 1 is then for applying force with its one side function 6 on the leg 66 of a tool part 62 and with its other functional side 8 on the leg 66 of the other tool part 64 at.
  • a respective leg 66 in this case has an approximately flat contact surface 70, which is designed such that the lamellar element can abut substantially with its entire functional side 6 and 8 at these contact surfaces 70.
  • the lamellar element 1 rests with its one end face 48 on the leg 68 of one tool part 62 and with its other end face 50 against the leg 68 of the other tool part 64.
  • the legs 68 each have an abutment surface 72 extending approximately perpendicularly to the abutment surface 70 of their respective tool part 62 or 64.
  • the abutment surfaces 72 are configured in such a way that the end faces 48 and 50 of the lamella element 1 can abut against them over a large area.
  • the tool parts 62 and 64 are spaced from each other in such a way that they do not touch during the forming process of the fin element 1. To reshape the slat element 1, the tool parts 62 and 64 are then moved towards one another.
  • the legs 66 of the tool parts 62 and 64 are displaced relative to each other such that a distance between them is reduced.
  • the legs 68 are displaced relative to each other in such a way that a distance between them is reduced in order to compress the fin element 1.
  • the legs 68 it is alternatively conceivable for the legs 68 to maintain a constant spacing, as a result of which they support only the lamellar element 1 during the shaping via the legs 66. In the latter case, it is conceivable that the lamellar element 1 is compressed by the legs 66 before the support.
  • the tool 60 or the tool parts 62 and 64 can have corresponding contact surfaces.
  • FIG. 8 and 9 has the lamellar element 1 according to a further embodiment connecting portions 4, which are only partially plastically deformed. As a result, a production of the fin element 1 is simplified.
  • the lamellar element 1 has beads 22, 24 and 26.
  • the deformed subregions of the lamellar element are the edge regions 74, 76 of a respective connecting section 4, which are exposed.
  • the edge regions 74, 76 are in this case pressed flat or substantially flat.
  • the two diametrical edge regions 74, 76 of a respective connecting portion 4 are arranged approximately V-shaped relative to one another.
  • the remaining respective area of the connecting portion 4, which is not pressed flat, has an arcuate shape in cross section.
  • FIG. 10 is a tool 78 for producing the lamellar element 1 with the deformed edge regions 74, 76 shown.
  • the tool 78 has a tool body 80 with two tool shells 82 and 84 which together define an octagonal opening 86.
  • the opening 86 has four edges 88 to 94, over which the fin element 1 is plastically deformed.
  • the symmetrically arranged edges 88 to 94 lie in each case in a corner region of the opening 86. If the lamellar element 1 is guided through the opening 86, the edges of the lamellar element 1 and thus the edge regions 74 and 76 of the connecting sections 4 become plastic by the edges 88 to 94 deformed.
  • the other regions of the lamellar element 1 are spaced apart when passing through a wall of the opening 86, which free spaces 96 to 102 are formed between the fin element 1 and the wall.
  • the opening 86 has wedge surfaces, which are seen in the longitudinal direction - according to FIG. 10 perpendicular to the plane - extend.
  • the edge regions 74 and 76 would thus be continuously deformed when passing the blade element 1 through the opening 86.
  • the wedge surfaces cause the opening 86 to taper in the longitudinal direction, that is to say in the feedthrough direction of the lamellar element 1.
  • a variant provides, which is formed as a meandering curved band, being seen in the direction of the tape on this alternately a connecting portion 4 for connecting two blades 2 and a blade 2, characterized in that the blade member 1 in the manufacture of the Connecting portions 4 is acted upon by a pressing force, and / or that fins 2 of at least a subset of the fins 2, at least one bead 22, 24, 26 have.
  • the lamellar element of the variant can be subjected to a further force during the production in the longitudinal direction and / or transverse direction.
  • the connecting sections 4 of the variant can be deformed by the action of the pressing force applied via the connecting sections 4.
  • the connecting sections of variant 4 can be converted from a curved shape into an at least partially planar shape by being acted upon by the pressing force applied via the connecting sections 4.
  • a radius can be provided between a respective connecting section and the lamella 2a, 2b connected thereto.
  • a respective lamella 2 of the variant, together with its two connecting sections 4 in a through-flow direction 16 of the lamellar element 1, can form approximately a Z-shape.
  • a first bead 24 and from its other side surface 34 fro, respectively, a second bead 22 or two second beads 22, 26 may be introduced from one side surface 36 forth.
  • a respective bead 22 to 26 of the variant may extend approximately parallel to a longitudinal edge 28 of its lamella 2.
  • two lateral beads 22, 26 can be introduced from one side face 34 and one middle bead 24 from the other side face 36.
  • the beads 22 to 26 of the variant can be designed in such a way that, viewed in each case between two adjacent lamellae 2 a, 2 b, a flow cross section remains essentially the same in the throughflow direction.
  • the bead or beads of the variant can be introduced approximately at a same position in each slat 2.
  • At least a plurality of connecting sections 4 or all connecting sections 4 of the variant can be subjected to the pressing force substantially simultaneously.
  • beads 22, 26 can be introduced into the strip.
  • the lamellar element 1 Before the lamination element 1 is acted upon by the pressing force and / or approximately simultaneously with the pressing force of the lamellar element 1, the lamellar element 1 can be subjected to a force in the longitudinal and / or transverse direction.
  • a lamellar element having lamellae which are integrally connected to each other via connecting portions.
  • the lamellar element is acted upon by its connecting sections with a pressing force during the production, whereby at least partial areas of the connecting sections are plastically deformed. Additionally or alternatively, beads are introduced in some or all lamellae.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP14179522.9A 2013-08-02 2014-08-01 Élément lamellaire et procédé de fabrication d'un élément lamellaire Active EP2832464B1 (fr)

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DE102013108357.9A DE102013108357A1 (de) 2013-08-02 2013-08-02 Lamellenelement und Verfahren zur Herstellung eines Lamellenelements

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EP2832464A1 true EP2832464A1 (fr) 2015-02-04
EP2832464B1 EP2832464B1 (fr) 2022-11-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3092391A1 (fr) * 2019-02-05 2020-08-07 Faurecia Systemes D'echappement Plaque à ailettes, procédé de fabrication, échangeur de chaleur équipé d’une telle plaque, ligne d’échappement
US10875078B2 (en) 2015-07-16 2020-12-29 Dbk David + Baader Gmbh Corrugated fin element

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016110023A1 (de) * 2015-11-13 2017-05-18 Dbk David + Baader Gmbh Heizeinheit und Wäschetrockner
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