EP1507126B1 - Ailette et dispositif de chauffage de gaz comportant plusieurs desdites ailettes. - Google Patents

Ailette et dispositif de chauffage de gaz comportant plusieurs desdites ailettes. Download PDF

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Publication number
EP1507126B1
EP1507126B1 EP04018860.9A EP04018860A EP1507126B1 EP 1507126 B1 EP1507126 B1 EP 1507126B1 EP 04018860 A EP04018860 A EP 04018860A EP 1507126 B1 EP1507126 B1 EP 1507126B1
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EP
European Patent Office
Prior art keywords
lamella
lamellae
tabs
embossments
approximately
Prior art date
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Active
Application number
EP04018860.9A
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German (de)
English (en)
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EP1507126A3 (fr
EP1507126A2 (fr
Inventor
Norbert Ernst
Mike Riether
Bernd Lauth
Rudi Flaxmeyer
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BorgWarner Ludwigsburg GmbH
Original Assignee
BorgWarner Beru Systems GmbH
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Publication of EP1507126A2 publication Critical patent/EP1507126A2/fr
Publication of EP1507126A3 publication Critical patent/EP1507126A3/fr
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Publication of EP1507126B1 publication Critical patent/EP1507126B1/fr
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Classifications

    • 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
    • F28F1/24—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 and extending transversely
    • F28F1/32—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 and extending transversely the means having portions engaging further tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching

Definitions

  • the invention relates to a lamella and a device for heating gas streams, in particular for heating interiors, such as motor vehicles, for heating the intake air of engines or the like, with at least one substantially tubular heating unit with a plurality of such arranged on the heating unit fins for heat dissipation to the gas to be heated, in particular air.
  • the DE 198 48 169 A1 describes a generic device for heating of interiors, especially of motor vehicles.
  • the device has a plurality of heat dissipation to the gas to be heated lamellae, which sit in a parallel arrangement on a heated heating unit in the form of one or more parallel profile tubes, in particular square tubes, clamping, wherein the square tubes or each one or enforce several recesses of the slats.
  • a heated heating unit in the form of one or more parallel profile tubes, in particular square tubes, clamping, wherein the square tubes or each one or enforce several recesses of the slats.
  • For improved heat transfer between the square tubes and the slats is provided to bend the square tubes facing edges of the openings of the slats to form standing in contact with the tubes tabs of the slat plane out.
  • the lamellae are at their serving for heat emission to the gas to be heated areas, which extend radially in the longitudinal direction of the lamellae away from the tubes or between them, equipped with bent out of the lamellar plane clamping lugs, which elastically to the respective adjacent lamella for conditioning reach and thus stabilize the arrangement of a plurality of slats side by side.
  • the slats - viewed in the longitudinal direction of the same direction - laterally of the apertures arranged and extending in the longitudinal direction of the slats beads, which stabilize the clamping seat of the slats on the square tubes.
  • the lamellae of the known device have a relatively poor dimensional stability, which in particular in the case of vibrations, as inevitably occur during operation of a motor vehicle, leads to undesirable noise and also entails manufacturing problems, the lamellae entails e.g. bent on the occasion of the punching process and incurred as a committee.
  • the heat transfer of the slats has proven to be in need of improvement, which is primarily related to the fact that the gas flow to be heated passes the available heat exchange surface of the slats relatively quickly.
  • the tabs in contact therewith located at the edges of the apertures of the laminations, are only partially, e.g. only punctually, abut the profile tubes, so that there is also an insufficient heat transfer.
  • the present invention seeks to provide in a device of the type mentioned above or at a lamella of such a device for improved heat transfer and at the same time for increased dimensional stability of the slats.
  • this object is achieved in a device of the type mentioned above in that the lamellae are provided with embossments which protrude from the lamellar plane.
  • the invention further provides for a lamella for such a heater, that it is provided with embossments, which protrude from the lamellar plane.
  • the swirling of the gas stream also increases its contact time with the lamella surface and thus the residence time available for heat transfer.
  • the embossings of the blade according to the invention give increased dimensional stability, so that on the one hand noises of the heating device, as can occur under the action of vibrations, are reliably prevented.
  • embossing of the slats in the context of the invention, moreover, only such deformations of the generally planar slat plane are addressed, which do not enforce the slat plane, i. In any case, there are no apertures or holes passing through the lamellae plane in the region of the embossments which could impair the dimensional stability of the lamellae.
  • the embossing of the lamellae according to the invention are consequently arranged exclusively on the lamellae while maintaining an unbroken surface.
  • Such embossing while maintaining an uninterrupted lamellar plane have also proved to be favorable, especially for reasons of better heat conduction within the lamellae of their standing with the tubular heating unit in heat-conducting contact areas up to the peripheral region of the fins.
  • the embossings are at least at the region of the lamellae serving for heat emission to the gas to be heated, which extends in the longitudinal direction of the lamellae extends substantially radially away from the at least one tube, arranged to provide there for a proper heat transfer to the gas to be heated.
  • the lamellae according to the invention are arranged in a clamping manner on the outside of the tube, as is known from the cited above DE 198 48 169 A1 is known.
  • a plurality of lamellae arranged one behind the other in the flow direction of the gas to be heated are provided, wherein rows of imprints of the lamellae arranged one behind the other are provided. These embossments arranged in rows are arranged offset in the flow direction of the gas to be heated.
  • a configuration of the lamellae can be produced simply and inexpensively; on the other hand, a large number of turbulences of the lamellae sweeping gas stream and, in particular, turbulence can be achieved, which, as already mentioned, improves the heat transfer of the lamellae to the gas stream and improves the lamination Heat conduction within the gas stream is favorable.
  • the invention provides that the embossments of the lamellae have a steep rise in the direction of flow of the gas to be heated and a drop which is relatively shallower. In this way, a kind of stagnation point of the inflowing gas and thus be generated in an effective manner turbulence.
  • the angle of increase of the embossments with respect to the fin surface preferably between about 45 ° and about 90 °, in particular between about 60 ° and about 90 °, for example between may be about 70 ° and about 90 °
  • the angle of decrease of the imprints against the fin surface may preferably be between about 1 ° and about 45 °, more preferably between about 1 ° and about 30 °, eg between about 5 ° and about 20 ° , amount.
  • the invention provides that the embossments of the slats are square, in particular substantially trapezoidal or rectangular, are formed.
  • embossments of the slats are formed substantially V-shaped, wherein the tip of the "V" of the substantially V-shaped embossing of the slats with advantage against the inflowing, to can be arranged heating gas.
  • turbulences of the gas flow can be generated by louvers of such a design;
  • the V-shaped embossments in the lamellar plane act in the manner of baffles, so that the inflowing gas is deflected outwards along its legs along the legs of the "V” and the contact time of the Gas flow is increased at the surface of the fins.
  • the limbs of the "V" of the substantially V-shaped embossing of the lamellae can either have an approximately linear extension direction or an approximately circular or elliptical segment-shaped extension direction, wherein they advantageously have a convex curvature, viewed in the last-mentioned alternative, from the inflow direction of the gas to divert the gas flow in such a way that the longest possible contact time results with the lamellar surface.
  • a plurality of V-shaped embossments of the lamellae are preferably arranged one behind the other in the flow direction of the gas to be heated, wherein the opening angle of the "V" of the V-shaped embossments of the lamellae can be of different sizes.
  • the opening angle of the "V" of the V-shaped embossments of the lamellae arranged one behind the other in the flow direction of the gas to be heated increases in the flow direction of the gas, so that each of the V-shaped embossments for a further deflection of the Gas stream and thus at the same time for effective turbulence of the same provides.
  • the invention provides in a generic device in which the lamellae are arranged clampingly on the outside of the tube, further, that the lamellae have at least one opening formed as a profile tube tube breakthrough and at least two opposite edges the openings are bent to form lugs bent out of the lamellar plane, the opposite edges being interrupted by slots arranged substantially perpendicularly to the opening, so that a plurality of lugs arranged side by side in the direction of extension of the edges are formed.
  • Such a configuration is particularly advantageous when the profile tube on which the slats are clamped, heated by PTC elements clamped or clamped inside the tube, as in this case a subsequent widening of the with the seated slats equipped tube to achieve an improved clamping fit of the fins on the outside of the tube would lead to a loosening of the clamped inside the tube heaters and thus excretes.
  • the inventive design of the slotted lugs of the slats makes in any case such expansion of the tube unnecessary and ensures proper heat conduction between the profile tube and the outside clamped slats.
  • At least two opposite edges of the openings of the slats in each case at least two slots to form each at least three adjacent tabs are provided.
  • at least two slots to form each at least three adjacent tabs are provided.
  • only two or more than three juxtaposed tabs may be provided on the edges of the openings limiting the edges.
  • the two opposite longitudinal edges of the openings of the lamellae may be interrupted by the slots arranged substantially perpendicularly to the opening, while the two further opposite transverse edges of the openings of Slats are formed continuously.
  • the lamellae may each have at least one further embossing in their lateral directions of the apertures with respect to the direction of their longitudinal extension, wherein the further embossings may advantageously be in the form of beads arranged parallel to the direction of longitudinal extension of the lamellae , as it is quoted from the beginning DE 198 48 169 A1 known per se.
  • the slats have at least one bent out of the lamellar plane clamping plate, which elastic to systems on a respective adjacent lamella is provided.
  • separate components for mutual support and Fixing the lamellae dispensable, with the adjacent lamella in contact with the clamping plates can also serve to heat transfer of the fins with each other, so that local cooling of some fins largely prevented due to a non-uniform flow and the overall efficiency of the device is increased.
  • the clamping straps are arranged on at least two opposite ends of the slats, wherein they can be formed in particular by at least a portion of the bent out of the slat plane transverse edges of the slats.
  • the lamellae and optionally the tubular heating unit expediently consist of a material with good thermal conductivity, such as a metal sheet, preferably of aluminum or an aluminum alloy.
  • illustrated heater 1 has, in the illustrated embodiment, two in the plane of the drawing successively arranged tubular heating units in the form of profile tubes 2, of which in Fig. 1 only the front profile tube 2 is visible.
  • each of the profile tubes 2 is integrally formed in the form of a square tube and inside eg with a in Fig. 2 Heating device, not shown, provided in the form of resistive elements, which is a mounting frame made of insulating material, such as polyamide (Ultramid®, BASF AG), a plurality of plate-shaped PTC elements in the receptacles of the mounting frame are arranged, a over the entire mounting frame extending contact path and a contact track covering the insulating plate include (also not shown).
  • the mounting frame can otherwise according to the mounting frame according to the DE 198 48 169 A1 be educated.
  • the PTC elements used for heating which are familiar as such, for example according to the EP 0 379 873 B1 be educated.
  • the edges of the profile tubes designed as a square tubes 2 are each rounded. This applies not only to the outer edges 3, but also for the edges 4 arranged in the interior.
  • the height h of the profile tubes 2 changes over their width b, wherein the lowest height is reached approximately in the middle. However, these height changes are only minor and are in the range of about 0.4 mm. Since the height of the longitudinal legs 5 of the profile tubes 2 is substantially constant, the same applies to the inner diameter of the profile tubes 2.
  • the profile tubes 2 consequently have on the inner side 6 of their longitudinal legs 5 a spherical formation or a concave shape, whereby an excellent clamping of in the interior of the profile tubes 2 arranged and for heating the same serving PTC elements (not shown) in the profile tubes 2 is achieved.
  • Fig. 1 it can be seen sitting on the outside of the profile tubes 2 by means of clamping friction and heat-slats 7, which are used to heat to the gas to be heated, eg air, and are arranged in parallel order in the direction of extension of the tubes 2 in a row.
  • the direction indicated by the arrow A flow of the fins 7 with the gas to be heated is provided approximately parallel to the lamellar plane and perpendicular to the extension direction of the profile tubes 2, so that the gas flow between the profile tubes 2 and the slats arranged thereon 13 passes and thereby sweeps the slat plane.
  • the profile tubes 2 provided with the lamellae 13 are fixed at their one end 2a to a plug-in flange 8 and at their other end 2b to a screw-on flange 9.
  • the ends 2a, 2b of the profile tubes 2 are in recesses 10 in the plug-in flange 8 and in corresponding recesses (not shown) used in the screw 9 and fixed by caulking to the support frame thus formed.
  • the flanges 8, 9 may for example also consist of Ultramid.
  • the material of the profile tubes 2, for example aluminum or an alloy thereof, is optionally slightly compressed for better fixation at the ends 2 a, 2 b of the profile tubes 2.
  • the provided between the profile tubes 2 and the support frame clamping connection can be otherwise in the in the DE 198 48 169 A1 be formed manner.
  • Fig. 3 shows a plan view of a blank of a primalamelle 7 (see Fig. 4 to 10 ) obtained from a flat blank of an aluminum sheet obtained, for example, by a punching operation.
  • the blank is provided with two openings 11, which are provided in the region of its longitudinal ends and extend substantially in the transverse direction of the blank or the lamella to be obtained therefrom.
  • the openings 11 are used to pass through each one of the two profile tubes 2 of the heater 1 according to Fig. 1 , For this purpose, as described below with reference to Fig.
  • the apertures 11 bounding edges bent to form tabs from the slat plane out, so that there is a reliable and permanent clamping connection of the slats 7 on the outside of the profile tubes 2.
  • the longitudinal edges of the apertures 11 are perpendicular from two subdivided approximately equidistant to these slots 12 arranged so that when bending these edges three in the extension direction of the edges juxtaposed tabs ( Fig. 4 ff), which provide a perfect contact with the profile tubes 2 (FIG. Fig. 1 ) and thus ensure a good heat transfer.
  • the formation of the two apertures 11 is identical.
  • the blank is further provided at its transverse edges with an approximately central projecting portion 13 which is bounded by slits 14 extending perpendicularly with respect to the transverse edges.
  • the projecting portions 13 of the transverse edges of the blank serve to form one clamping lug bent out of the lamellar plane, which is provided for elastic abutment against a respectively adjacent lamella 7 (cf. Fig. 1 ) and the parallel arrangement of a plurality of fins 7 on the profile tubes 2 thus stabilized.
  • each of a blank according to Fig. 3 have been obtained, which is not part of the invention.
  • the lamellae 7a, 7b differ only by the configuration of the embossments 15 explained in more detail below on a large part of their arranged between the apertures 11 central region, which serves for heat release to the gas to be heated and in the longitudinal direction of the fins 7a, 7b in Substantially radially from the two openings 11 passing through the profile tubes 2 ( Fig. 1 ) extends away.
  • the two in the longitudinal direction of the lamellae 7a, 7b opposite Edges bounding the apertures 11 are bent in an arc shape to form tabs 16 bent out of the slat plane.
  • the distance d thereof is at least the height h (FIG. Fig. 2 ) of the profile tube, while the clear distance b of the end faces of the tabs 16 is less than the height h of the profile tube 2, as long as the slats 7a, 7b have not yet been pushed over the profile tubes 2.
  • the slots 12 provide for a subdivision of the tabs 16 in the longitudinal direction of the longitudinal edges delimiting the apertures 11, so that three tabs 16a, 16b, 16c arranged next to each other (FIG. Fig. 4, 5 or 7, 8) are formed, which is the slightly concave configuration of the longitudinal leg 5 of the profile tubes 2 (FIG. Fig. 2 ) and for a perfect clamping fit of the slats 7a, 7b on the profile tube 2 and in particular ensure good thermal conduction between them.
  • the tabs 18 have a constant distance from each other over their extension direction, which is substantially equal to the width b (FIG. Fig. 2 ) of the profile tubes 2 corresponds. These tabs 18 serve to stabilize the clamping seat of the slats 7 a, 7 b on the profile tubes. 2
  • corrugations 19 extending parallel to the tabs 18 are furthermore provided, which extend laterally with respect to the longitudinal extension direction of the lamellae 7a, 7b 11 are arranged and stamped out of the lamellar plane.
  • the embossing can be opposite or according to the deflection of the tabs 16, 18 may be provided, wherein the embossment is carried out such that the fin surface is not broken.
  • the beads 19 stabilize the slats 7 a, 7 b in the region of the openings 11.
  • the slats 7a, 7b can be frictionally pushed over the profile tubes 2 and sit on these clamped on.
  • the clamping seat and in particular interrupted by the slots 12 tabs 16 the slats 7 a, 7 b pressed with their profile tubes 2 facing sides of the tabs 16, 18 largely flat against the outside of the profile tubes 2 and are such on this outside of that safe heat transfer to the slats 7a, 7b is ensured.
  • the projecting, central regions 13 of the opposite transverse edges of the lamellae 7a, 7b are bent out approximately arcuately from the lamellar plane to form a respective clamping lug 21, wherein the clamping lugs 21 for elastic contact with a respective adjacent lamella 7a, 7b of the heating device 1 according to Fig. 1 are provided.
  • the clamping tabs 21 may be bent in the same or in the opposite direction as the edges of the openings 11 and form an angle ⁇ of, for example, about 50 ° with the lamellar plane ( Fig. 6 and 9 ).
  • Both the in 4 to 6 shown blade 7a and the blade 7b according to Fig. 7 to 10 is finally provided with embossments 15, which protrude while maintaining a continuous surface of the lamella 7 of the lamellar plane without the lamella 7 to enforce the formation of breakthroughs.
  • the embossings 15 are arranged practically over the entire area for heat release to the gas to be heated area, which in the longitudinal direction of the slats 7 a, 7 b substantially radially from the apertures 11 passing through the profile tubes 2 (FIGS. Fig. 1 ) extends away.
  • this area is the region of the lamellae 7a, 7b arranged between the openings 11.
  • the lamella 7a has embossings 15a with a substantially rectangular base surface and a substantially trapezoidal, obliquely upwardly projecting from the lamellar plane, wherein a plurality of successively arranged in the flow direction A of the gas to be heated rows of such embossments 15a is provided, which with respect the flow direction A are arranged offset.
  • the embossings 15a of the - in the present embodiment four rows of embossments 15a of identical shape and applied by means of an embossing process on the lamellar plane, that the embossments 15a, although projecting from the lamellar plane or at the opposite Side of the lamella 15a are withdrawn with respect to the lamellar plane, but - as already mentioned - the lamella 7a not enforce.
  • the individual embossments 15 are designed such that they have a steep in the flow direction A of the gas to be heated, for example, about 85 ° and a contrast flatter, over the entire height of the obliquely upwardly projecting trapezium of the embossments 15 extending waste of, for example 10 ° (see, in particular Fig. 5 ).
  • the embossings 15a give the lamellae 7a on the one hand an increased dimensional stability, so that it is stiffened and there is no unwanted noise even with continuous exposure to vibration.
  • the embossments 15a respectively generate swirls of the gas flow passing over them (arrow A) and additionally increase the heat exchanging area of the fin 15a, so that the heat exchange between the fin 15a and the gas to be heated is considerably improved. All the more so, as can be achieved by the turbulence occurring at the embossments 15a of the gas stream A, a turbulent flow.
  • the embossments 15b of the lamella 7b according to Fig. 7 to 9 differ from the imprints 15a of in 4 to 6 illustrated lamella 7a according to the invention by its substantially V-shaped configuration.
  • the tip of the "V" of the embossings 15b is aligned counter to the flow direction A of the inflowing, to be heated gas, so that at the top of the "V” is formed a stagnation point and the gas along the legs of the "V” is deflected laterally.
  • a multiplicity of turbulences is generated on the one hand, and on the other hand the contact time of the gas on the slat surface is increased due to the deflections.
  • the legs of the "V" on a linear extension direction wherein they can of course also be formed circular or ellipsensegmentförmig curved.
  • the gas sweeping over the lamellar plane experiences a plurality of deflections or a plurality of turbulences, so that a turbulent flow can also be achieved here and the heat exchange between the lamella 15b and the gas flow is improved particularly effectively.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (13)

  1. Lamelle (7) pour un dispositif de chauffage, dans lequel la lamelle (7) est pourvue de gaufrures (15) faisant saillie par rapport au plan de la lamelle, dans laquelle il est prévu des rangées de gaufrures (15a) agencées les unes derrière les autres,
    dans laquelle les rangées de gaufrures (15a) sont agencées de façon décalée dans la direction d'écoulement (A) du gaz à chauffer,
    et dans laquelle les gaufrures (15) de la lamelle (7) présentent une pente fortement ascendante et une pente légèrement descendante par rapport à celle-ci dans la direction d'écoulement (A) du gaz à chauffer, caractérisée en ce que
    les gaufrures (15a) de la lamelle (7a) sont conçues carrées, en particulier essentiellement trapézoïdales ou rectangulaires,
    en ce que la lamelle (7) comporte au moins une percée (11) pour un tube conçu comme un tube profilé (2), et en ce qu'au moins deux bords opposés des percées (11) sont repliés en formant des pattes (16) faisant saillie par rapport au plan de la lamelle et sont interrompus par des fentes (12) agencées quasiment perpendiculairement à la percée (11), de manière à former une pluralité de pattes (16a, 16b, 16c) agencées côte à côte dans la direction d'extension de ces bords.
  2. Lamelle selon la revendication 1, caractérisée en ce que l'angle de la pente ascendante des gaufrures (15) par rapport à la surface de lamelle est compris entre
    environ 45° et environ 90°, en particulier entre environ 60° et environ 90°.
  3. Lamelle selon l'une des revendications précédentes, caractérisée en ce que l'angle de la pente descendante des gaufrures (15) par rapport à la surface de lamelle est compris entre environ 1° et environ 45°, en particulier entre environ 1° et environ 30°.
  4. Lamelle selon l'une des revendications précédentes, caractérisée en ce qu'au moins deux fentes (12) sont respectivement prévues en formant respectivement au moins trois pattes (16a, 16b, 16c) agencées côte à côte, sur au moins deux bords opposés (16) des percées (11) de la lamelle (7).
  5. Lamelle selon l'une des revendications précédentes, caractérisée en ce que deux bords opposés des percées (11) de la lamelle (7), repliés en formant les pattes (16a, 16b, 16c), sont interrompus par des fentes (12) agencées quasiment perpendiculairement à la percée (11), tandis que deux autres bords opposés des percées (11) de la lamelle (7), repliés en formant les pattes (18), sont conçus continus.
  6. Lamelle selon l'une des revendications précédentes, caractérisée en ce que la lamelle (7) comporte respectivement au moins une autre gaufrure (19) dans les régions latérales des percées (11) par rapport à la direction d'extension longitudinale de celles-ci.
  7. Lamelle selon la revendication 6, caractérisée en ce que les autres gaufrures (19) sont conçues sous forme de nervures agencées parallèlement à la direction d'extension longitudinale de la lamelle (7).
  8. Lamelle selon l'une des revendications précédentes, caractérisée en ce que la lamelle (7) est constituée d'aluminium ou d'un alliage d'aluminium.
  9. Dispositif (1) pour le chauffage de flux de gaz, en particulier pour le chauffage d'espaces intérieurs, tels que dans les véhicules automobiles, avec au moins une unité de chauffage (2) quasiment tubulaire, avec des lamelles (7) agencées sur celle-ci, selon l'une des revendications précédentes, pour la diffusion de chaleur vers le gaz à chauffer,
    dans lequel les lamelles (7) sont agencées en étant serrées du côté extérieur de l'unité de chauffage tubulaire, dans lequel
    l'au moins une unité de chauffage tubulaire est conçue comme un tube profilé (2) et les pattes (16) sont montées serrées sur le côté extérieur du tube profilé (2).
  10. Dispositif selon la revendication 9, caractérisé en ce que les lamelles (7) comportent au moins une patte de serrage (21) courbée en faisant saillie par rapport au plan des lamelles, laquelle est destinée à s'appliquer élastiquement sur une lamelle (7) respectivement adjacente.
  11. Dispositif selon la revendication 10, caractérisé en ce que les pattes de serrage (21) sont agencées à au moins deux extrémités opposées des lamelles (7).
  12. Dispositif selon la revendication 11, caractérisé en ce que les pattes de serrage (21) sont constituées d'au moins une partie (13) des arêtes transversales des lamelles (7) courbée hors du plan des lamelles.
  13. Dispositif selon l'une des revendications 9-12, caractérisé en ce que les lamelles (7) et le cas échéant l'unité de chauffage tubulaire (2) sont constituées d'aluminium ou d'un alliage d'aluminium.
EP04018860.9A 2003-08-09 2004-08-09 Ailette et dispositif de chauffage de gaz comportant plusieurs desdites ailettes. Active EP1507126B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20312313U 2003-08-09
DE20312313U DE20312313U1 (de) 2003-08-09 2003-08-09 Vorrichtung zum Erwärmen von Gasströmen

Publications (3)

Publication Number Publication Date
EP1507126A2 EP1507126A2 (fr) 2005-02-16
EP1507126A3 EP1507126A3 (fr) 2008-09-24
EP1507126B1 true EP1507126B1 (fr) 2014-08-13

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Application Number Title Priority Date Filing Date
EP04018860.9A Active EP1507126B1 (fr) 2003-08-09 2004-08-09 Ailette et dispositif de chauffage de gaz comportant plusieurs desdites ailettes.

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DE102004062605B4 (de) * 2004-12-24 2013-02-28 Eichenauer Heizelemente Gmbh & Co. Kg Elektrische Heizeinrichtung zum Erwärmen von Flüssigkeit in einem Kraftfahrzeug und Flüssigkeitsbehälter mit einer derartigen Heizeinrichtung
DE202005004611U1 (de) * 2005-03-22 2006-04-27 Eichenauer Heizelemente Gmbh & Co. Kg Vorrichtung zum Erwärmen von Gasströmen und Wärmeabgabelamellen einer solchen Vorrichtung
DE102006017424B4 (de) * 2006-04-13 2009-10-29 Küster Automotive Door Systems GmbH Einstellbare Befestigungsvorrichtung
DE102006055872B3 (de) 2006-11-23 2008-03-13 Eichenauer Heizelemente Gmbh & Co. Kg Elektrische Heizung, insbesondere zur Verwendung als Zusatzheizung in Automobilen
DE102011056745B4 (de) * 2011-12-21 2014-01-02 Miele & Cie. Kg Heizeinrichtung sowie Gargerät mit einer solchen Heizeinrichtung
EP3051223B1 (fr) 2015-01-28 2017-11-08 Mahle International GmbH Dispositif de chauffage électrique
DE102018101453A1 (de) 2018-01-23 2019-07-25 Borgwarner Ludwigsburg Gmbh Heizvorrichtung und Verfahren zum Herstellung eines Heizstabes
DE102019108435A1 (de) 2019-04-01 2020-10-15 Borgwarner Ludwigsburg Gmbh Heizvorrichtung mit abgeschälten Lamellen und Verfahren zum Herstellen eines Heizstabs

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