EP1890101B1 - Ailette pour échangeur de chaleur, échangeur de chaleur avec une telle ailette et procédé pour fabriquer l'échangeur de chaleur - Google Patents

Ailette pour échangeur de chaleur, échangeur de chaleur avec une telle ailette et procédé pour fabriquer l'échangeur de chaleur Download PDF

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Publication number
EP1890101B1
EP1890101B1 EP20060016505 EP06016505A EP1890101B1 EP 1890101 B1 EP1890101 B1 EP 1890101B1 EP 20060016505 EP20060016505 EP 20060016505 EP 06016505 A EP06016505 A EP 06016505A EP 1890101 B1 EP1890101 B1 EP 1890101B1
Authority
EP
European Patent Office
Prior art keywords
collar
fin
partial regions
heat exchanger
fins
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.)
Expired - Fee Related
Application number
EP20060016505
Other languages
German (de)
English (en)
Other versions
EP1890101A1 (fr
Inventor
Werner Dipl.-Ing. Helms
Wolfgang Dr.-Ing. Kramer
Thomas Dipl.-Ing. Ruppel
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.)
Mahle Behr GmbH and Co KG
Mahle Behr Spain SA
Original Assignee
Behr GmbH and Co KG
Frape Behr SA
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 Behr GmbH and Co KG, Frape Behr SA filed Critical Behr GmbH and Co KG
Priority to DE200650005252 priority Critical patent/DE502006005252D1/de
Priority to EP20060016505 priority patent/EP1890101B1/fr
Publication of EP1890101A1 publication Critical patent/EP1890101A1/fr
Application granted granted Critical
Publication of EP1890101B1 publication Critical patent/EP1890101B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F28F1/325—Fins with openings
    • 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
    • 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
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/125—Fastening; Joining by methods involving deformation of the elements by bringing elements together and expanding

Definitions

  • the invention relates to a rib for a heat exchanger according to the preamble of claim 1, a heat exchanger according to the preamble of claim 3 and a method for producing the heat exchanger according to the preamble of claim 8.
  • a rib is from the Scriptures US-A-2005 015 5750 known.
  • the ribs have openings with collars, so-called passages, for receiving flat tubes.
  • the ribs are stacked at a certain distance, the so-called rib pitch, and the tubes are inserted into the passages, which is preferably done automatically.
  • Tubes and ribs of the known system consist of aluminum or aluminum alloys and are soldered together in the area of the passages.
  • the known rib has between the passages gill fields and turbulators, which also serve to produce the rib spacing. Since the turbulators are arranged in the area of the gill fields, there is a loss of thermodynamic performance due to a poorer heat transfer.
  • the problem underlying the invention is to make a rib with spacers and passage thermodynamically and manufacturing technology favorable.
  • soldered systems it is also known to make the rib spacing by spacers outside the gill area.
  • a solderable heat exchanger block has been known, which consists of flat ribs and flat tubes, wherein the ribs have passage openings for the tubes and the openings enclosing collar with a bent-up spacer tab.
  • the spacer flap is part of a collar section and towers above it in height.
  • the collar portions and the spacer tabs have different functions: the collar portions lie over a large part of the circumference of the flat tube and are soldered to it.
  • the raised spacer plates are used to fix the distance in the stacking of the flat ribs, they are claimed in this layering process to pressure or buckling.
  • the spacer tab Since in the known rib, the spacer tab is physically connected to the collar, there is a mutual influence of the functions.
  • the disadvantage here is that the soldering gap can be increased inadmissible by the pressure and buckling of the spacer, resulting in insufficient soldering and thus to a reduced thermal performance of the heat exchanger.
  • the collar which surrounds the openings for receiving the flat tubes assumes both the function of a contact surface and the function of spacing, these two functions being separated from one another in such a way that they do not mutually engage one another. influence negatively.
  • the spacer function compressing stress of the collar
  • the pressing force of the collar for fixing the ribs on the tube is not impaired - rather, the collar can maintain an undiminished tension or contact pressure on the flat tube.
  • the function separation takes place in that the collar - as seen in the circumferential direction - is divided into individual subregions, wherein the subsections perform the same or different functions.
  • at least two first subregions can only assume the function of pressing the collar onto the flat tube, and at least one second subarea can exclusively perform the function of spacing.
  • the separation of the functions or the subregions can be advantageously carried out by separating cuts distributed over the circumference of the collar.
  • the collar is thus separated into individual sections, which result in a fan-shaped collar which encompasses the circumference of the flat tube.
  • contact surfaces and spacers can be provided by a third portion of another function, namely the flow influencing by appropriate design of the third portion.
  • the surface of the collar is used to further improve the heat transfer through the third sections in the form of flow-influencing elements.
  • the object of the invention is also achieved by the features of claim 3 for a heat exchanger, which is equipped with the rib according to the invention.
  • the thermodynamic performance of the heat exchanger can be increased and the manufacturing costs reduced.
  • flat tubes and ribs made of aluminum or aluminum alloys and are connected by brazing materially.
  • the advantage of a higher heat transfer performance is achieved.
  • the solder gaps between the collar and flat tubes are conical. This results in the advantage that a mechanical production (threading of the tubes in the collar openings) is possible and by the solder seam reinforcing the pipe cross-section is achieved.
  • the object of the invention is finally achieved by a method having the features of claim 8.
  • the first partial areas according to the invention serve as contact surfaces and on the one hand cause a fixation of rib and tube and on the other hand ensure the securing of a defined Lotspaltes to achieve a flawless soldering.
  • the second subregions in the form of spacers ensure the specified rib spacing (rib pitch) when the ribs are stacked on one another.
  • the inventive method thus has the advantage of a higher process reliability, since the required process parameters soldering and rib division can be maintained with greater security. This lowers the manufacturing costs of the heat exchanger.
  • Fig. 1 shows a plan view of a substantially planar, arranged in the plane of rib 1, which has an opening 2 with a collar. 3 having.
  • the rib 1 is part of a not shown.
  • Ribbed packet which is connected to the openings 2, not shown flat tubes, preferably by soldering.
  • the collar 3 and the rib 1 are made in one piece from a thin sheet, preferably made of aluminum or an aluminum alloy, wherein the material thickness of the ribs 1 is in the range of hundredths of a millimeter.
  • the opening 2 is formed as a slot for receiving the flat tubes, not shown, and has - distributed over the circumference - a plurality of partially differently shaped collar portions 3a to 3l, which are separated by column 4.
  • the collar portions 3a to 3l have partly the same, sometimes different functions:
  • the collar portion 3a, 3c, 3e, 3g, 3i, 3k have the function of contact surfaces, which create the narrowest possible and with a defined gap width of the flat tube, not shown ,
  • the latter also applies to the arranged on the narrow sides of the elongated hole 2 collar portions 3f, 3l, which simultaneously serve a longitudinal centering of the flat tube in the opening 2.
  • the collar sections 3d, 3j which are arranged on opposite longitudinal sides, have the function of spacers; they are therefore bent at its free end (lying above the plane of the drawing) parallel to the plane of the rib 1 to the outside and form semicircular contact surfaces for the next following rib.
  • the collar sections 3b, 3h have the function of flow-guiding or flow-influencing elements, for example, for generating a turbulent flow of a collar surrounding the outside of the medium, in particular air, whose flow direction is represented by an arrow L.
  • the collar sections 3b, 3h issued to the outside, ie from the oval contour of the collar 3 to the outside.
  • a turbulence therefore results behind the flow-influencing elements 3b, 3h as a result of a stall on the outer edge.
  • This increases the heat transfer in the region of the longitudinal sides of the flat tube.
  • the illustrated geometry and the arrangement of the collar sections 3a to 3l are exemplary, they can be varied within the scope of the invention. It is essential, however, that the collar sections, which perform different functions, are separated from each other, so that there is no mutual unfavorable influence.
  • the collar sections 3a, 3c, 3e, 3g, 3i, 3k are (in the circumferential direction) relatively long sections in order to achieve a substantial contact with the flat tube.
  • the collar sections 3d, 3j for spacing are on the other hand relatively short (seen in the circumferential direction) formed. The same applies to the flow-guiding elements 3b, 3h.
  • Fig. 2 shows a view of the collar 3 with the collar portions 3g, 3i, 3k and 3f, 31 for maintaining contact, the collar portion 3j for spacing and the collar portion 3h for influencing the flow outside the flat tube.
  • the collar 3 has an upper edge b and a height t, which extends from the rib plane 1 (shown in phantom) to the upper edge b and corresponds to the rib pitch.
  • the flat tubes preferably automatically threaded or inserted.
  • the contact portions 3a, 3c, 3e, 3g, 3i, 3k and 3f, 31 fit tightly against the circumference of the flat tube.
  • the ribs are pressed against each other due to friction between the flat tube and collar 3, wherein this pressure load is absorbed by the spacers 3d, 3j.
  • These are designed and designed for this purpose - yet deformations may occur, which are not transmitted due to separation through the column 4 on the adjacent contact sections - the latter are thus not affected by such a pressure load in their effect as contact surfaces for generating a defined contact force, as they are isolated by the separation column 4.
  • the preparation of the openings 2 with collar 3 and 4 columns can be analogous to the aforementioned DE 197 41 856 A1 Applicant done, ie by making cuts and embossing the collar sections 3a to 31, ie without punching waste.

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

Claims (8)

  1. Ailette (1) pour un échangeur de chaleur, ailette qui est configurée sensiblement de façon plane et est visible pour former un paquet d'ailettes en ayant un écartement d'ailettes t prédéfini, et présente des ouvertures (2) à collerette (3) pour le logement de tubes plats, ainsi que des écarteurs servant au respect de l'écartement d'ailettes t, où la collerette (3) assure au moins la fonction de surfaces de contact et / ou de pression (3a, 3c, 3e, 3g, 3i, 3k) et la fonction de respect de l'écartement (3d, 3j), et que les fonctions sont distinctes l'une de l'autre, de manière telle que la collerette (3), répartie sur la circonférence, soit subdivisée en zones partielles (3a à 3l), où différentes zones partielles exercent différentes fonctions indépendamment les unes des autres, où les zones partielles (3a à 3l) de la collerette (3) sont séparées les unes des autres par des entailles de séparation (4), et la collerette (3) présente des premières zones partielles (3a, 3c, 3e, 3g, 3i, 3k) qui assurent la fonction des surfaces de contact et / ou de pression, et la collerette (3) présente des deuxièmes zones partielles (3d, 3j) qui assurent la fonction de respect de l'écartement, et les premières zones partielles sont configurées comme des parties de collerettes (3a, 3c, 3e, 3g, 3i, 3k) relativement longues et disposées sur les grands côtés de la collerette (3), et les deuxièmes zones partielles sont configurées comme des parties de collerettes (3d, 3j) relativement courtes, parties de collerettes qui, au niveau de l'extrémité, présentent un élément d'écartement, à savoir une surface d'écartement coudée.
  2. Ailette selon la revendication 1, caractérisée en ce que la collerette (3) présente des troisièmes zones partielles (3b, 3h) qui assurent une troisième fonction, en particulier la fonction ayant une influence sur l'écoulement.
  3. Ailette selon l'une ou l'autre des revendications précédentes, caractérisée en ce que les troisièmes zones partielles sont configurées comme des éléments (3b, 3h) guidant l'écoulement, en particulier comme des générateurs de turbulences.
  4. Echangeur de chaleur qui présente un bloc composé d'ailettes traversées par des tubes plats, caractérisé en ce que les ailettes (1) sont configurées selon au moins l'une quelconque des revendications précédentes.
  5. Echangeur de chaleur selon la revendication 4, caractérisé en ce que des tubes et des ailettes peuvent être fabriqués dans un matériau tel que de l'aluminium ou bien dans un alliage d'aluminium.
  6. Echangeur de chaleur selon la revendication 5, caractérisé en ce que les tubes plats sont brasés avec les ailettes (1), dans la zone des collerettes (3).
  7. Echangeur de chaleur selon la revendication 6, caractérisé en ce que les collerettes (3), en particulier les premières zones partielles (3a, 3c, 3e, 3g, 3i, 3k) forment, avec les tubes plats, des interstices de brasage coniques.
  8. Procédé de fabrication d'un échangeur de chaleur selon au moins l'une quelconque des revendications 4 à 7, caractérisé par les étapes de procédé qui suivent, consistant :
    a) à fournir une bande d'ailette plate,
    b) à réaliser des ouvertures (2) et des collerettes (3) dans la bande d'ailette,
    c) à couper la bande d'ailette à la longueur d'ailette,
    d) à disposer en couches les ailettes (1) pour former un bloc,
    e) à introduire les tubes plats dans les ouvertures (2),
    f) à réaliser l'écartement d'ailettes (t) par application des ailettes (1) sur les deuxièmes zones partielles (écarteurs 3d, 3j) et à fixer les ailettes (1) sur les tubes plats, à travers les premières zones partielles (surfaces de contact 3a, 3c, 3e, 3g, 3i, 3k), et
    g) à faire passer le bloc de tubes / d'ailettes, fixé, dans un four à braser et à braser les tubes et ailettes (1).
EP20060016505 2006-08-08 2006-08-08 Ailette pour échangeur de chaleur, échangeur de chaleur avec une telle ailette et procédé pour fabriquer l'échangeur de chaleur Expired - Fee Related EP1890101B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200650005252 DE502006005252D1 (de) 2006-08-08 2006-08-08 Rippe für einen Wärmeübertrager, Wärmeübertrager mit einer solchen Rippe und Verfahren zur Herstellung des Wärmeübertragers
EP20060016505 EP1890101B1 (fr) 2006-08-08 2006-08-08 Ailette pour échangeur de chaleur, échangeur de chaleur avec une telle ailette et procédé pour fabriquer l'échangeur de chaleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20060016505 EP1890101B1 (fr) 2006-08-08 2006-08-08 Ailette pour échangeur de chaleur, échangeur de chaleur avec une telle ailette et procédé pour fabriquer l'échangeur de chaleur

Publications (2)

Publication Number Publication Date
EP1890101A1 EP1890101A1 (fr) 2008-02-20
EP1890101B1 true EP1890101B1 (fr) 2009-10-28

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EP20060016505 Expired - Fee Related EP1890101B1 (fr) 2006-08-08 2006-08-08 Ailette pour échangeur de chaleur, échangeur de chaleur avec une telle ailette et procédé pour fabriquer l'échangeur de chaleur

Country Status (2)

Country Link
EP (1) EP1890101B1 (fr)
DE (1) DE502006005252D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012002234A1 (de) * 2012-02-04 2013-08-08 Volkswagen Aktiengesellschaft Wärmetauscher mit mehreren Lamellen und Verfahren zur Herstellung einer Lamelle für einen Wärmetauscher
FR3037388B1 (fr) * 2015-06-12 2019-07-26 Valeo Systemes Thermiques Ailette d'un echangeur thermique notamment pour vehicule automobile, et echangeur thermique correspondant
DE202017103235U1 (de) * 2017-05-30 2018-08-31 Autokühler GmbH & Co KG Wärmeaustauscher
CN112344763B (zh) * 2019-08-07 2022-04-01 丹佛斯有限公司 制造换热器的方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971929C (de) * 1941-05-13 1959-04-16 Albert Bertholdt Henninger Verfahren zur Herstellung von Rohrkuehlern aus Aluminium oder Aluminiumlegierungen
DE4404837A1 (de) * 1994-02-16 1995-08-17 Behr Gmbh & Co Rippe für Wärmetauscher
US20050155750A1 (en) * 2004-01-20 2005-07-21 Mitchell Paul L. Brazed plate fin heat exchanger

Also Published As

Publication number Publication date
DE502006005252D1 (de) 2009-12-10
EP1890101A1 (fr) 2008-02-20

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