EP3521745B1 - Flachrohranordnung für einen wärmetauscher - Google Patents

Flachrohranordnung für einen wärmetauscher Download PDF

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Publication number
EP3521745B1
EP3521745B1 EP18461515.1A EP18461515A EP3521745B1 EP 3521745 B1 EP3521745 B1 EP 3521745B1 EP 18461515 A EP18461515 A EP 18461515A EP 3521745 B1 EP3521745 B1 EP 3521745B1
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EP
European Patent Office
Prior art keywords
wall
distance
flat tube
adjacent
bent portion
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.)
Active
Application number
EP18461515.1A
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English (en)
French (fr)
Other versions
EP3521745A1 (de
Inventor
Adam KOLACZ
Robert BIENIEK
Wojciech MATYSZKOWICZ
Przemyslaw LACHOWICZ
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.)
Valeo Autosystemy Sp zoo
Original Assignee
Valeo Autosystemy Sp zoo
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Publication date
Application filed by Valeo Autosystemy Sp zoo filed Critical Valeo Autosystemy Sp zoo
Priority to EP18461515.1A priority Critical patent/EP3521745B1/de
Publication of EP3521745A1 publication Critical patent/EP3521745A1/de
Application granted granted Critical
Publication of EP3521745B1 publication Critical patent/EP3521745B1/de
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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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0391—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits a single plate being bent to form one or more conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles

Definitions

  • the invention relates to a tube assembly for a heat exchanger. More particularly, the present invention relates to a tube assembly with a flat tube and a corrugated fin for a heat exchanger used in the automotive industry.
  • the heat exchange can take place between two fluids.
  • the first fluid can be guided through a conduit formed by elements of the heat exchanger.
  • These can be two manifolds connected fluidically by means of tubes.
  • One of the fluids travels through these tubes between said manifolds.
  • the tubes conduct the heat of the first fluid which is then transferred to the second fluid, or vice versa.
  • flat tubes which in cross-section have an elongated shape defined by two parallel walls connected at their side edges by side walls of substantially smaller height. These tubes are generally placed one above the other so that their neighboring flat, parallel walls form channels for the second fluid.
  • the tubes can comprise inner fins, for example in form of corrugated sheets, the bent portions of which are in contact with said flat parallel walls of the flat tubes. These fins facilitate the heat exchange.
  • the example of such tubes is described in patent applications with publication numbers EP1089047A2 and EP1906127A2 .
  • DE 10 2008 013 018 A1 describes a flat tube assembly according to the preamble of claim 1.
  • the object of the invention is flat tube assembly for a heat exchanger, as defined by claim 1, comprising a flat tube and a fin placed inside the tube, the flat tube being formed by a sheet material and being defined by a bottom wall, a top wall and two side walls, the distance between the bottom wall and the top wall defining the height direction H with tube height Ht, and the distance between the side walls defining the width direction W, wherein at least one of the side walls and a corner section between the bottom wall and this side wall are formed by layers of the sheet material, and wherein the fin is a corrugated sheet with plurality of adjacent walls joined at top and bottom bent portions which are in contact with the top and bottom walls of the tube respectively, the adjacent bent portions being distanced from each other by substantially constant distance T1, wherein a terminal adjacent wall of the fin has a bottom side edge which is distanced from the adjacent bottom bent portion, along the width direction W, by a distance T2 which is bigger than distance T1, and is distanced from the top wall, along the height direction H, by a distance Hf
  • the bottom side edge of the terminal adjacent wall of the fin is in contact with the side wall of the flat tube.
  • the terminal adjacent wall has a bent portion so that the terminal adjacent wall runs substantially in parallel to the side wall, in a distanced manner, between said bent portion and the bottom side edge.
  • the bent portion is located closer to the last top bent portion than to the bottom side edge.
  • the distance Hf between the bottom side edge and the top wall is 6 mm, while the distance Ht between the bottom wall and the top wall is 7 mm.
  • the distance T2 between the bottom side edge and the adjacent bottom bent portion is 4,5 mm, while the distance T1 between the adjacent bottom end portions 22 is 2,5 mm.
  • Figs. 1a and 1b show a tube assembly according to the invention.
  • Figs. 1a and 1b show a tube assembly according to the invention. It is to be noted that both these figures present the same tube assembly - the same embodiment is presented twice to provide space for reference signs in a clear manner. The description thus relates to both these figures interchangeably.
  • the figures show a flat tube assembly 1 for a heat exchanger.
  • the heat exchanger can be a charge air cooler, water charge air cooler, condenser, radiator and the like.
  • the flat tube assembly 1 comprises a flat tube 10 and a fin 20 placed inside the tube 10.
  • the flat tube 10 is formed by a sheet material and is defined by a bottom wall 11, a top wall 12 and two side walls 13.
  • the side walls can be completely arcuate or can comprise a flat middle section.
  • the distance between the bottom wall 11 and the top wall 12 defines the height direction H.
  • Tube height Ht is measured along this distance.
  • tube height Ht is the shortest distance between the flat, parallel walls 11, 12 of the flat tube.
  • the distance between the side walls 13 defines the width direction W. This width direction is to be understood to run parallel to the flat, parallel walls 11, 12.
  • At least one of the side walls 13 and a corner section 14 between the bottom wall 11 and this side wall 13 are formed by layers of the sheet material.
  • the sides of the sheet overlap one onto the other at one of the sides. Consequently, at least one of the side walls have a layered structure.
  • at least one of the corner sections at the joint between bottom wall and a side wall will also be layered.
  • the fin 20 is a corrugated sheet comprising a plurality of adjacent walls joined at top and bottom bent portions 22 which are in contact with the top and bottom walls 11, 12 of the tube 10 respectively.
  • the top and bottom bent portions 22 form ridges of the folds which form corrugations.
  • the adjacent bent portions 22 are distanced from each other by substantially constant distance T1, which means that the neighboring bottom bent portions are separated from each other by the distance T1, and the neighboring top bent portions are also separated from each other by the distance T1.
  • This bottom side edge 23 is the terminal part of the terminal adjacent wall.
  • the bottom side edge 23 is distanced from the adjacent bottom bent portion 22, along the width direction W, by a distance T2 which is bigger than distance T1.
  • it is distanced from the top wall 12, along the height direction H, by a distance Hf which is smaller than Ht.
  • the bottom side edge 23 of the terminal adjacent wall 21 of the fin 10 may be in contact with the side wall 13 of the flat tube 10, preferably connected permanently to it.
  • the terminal adjacent wall 21 can comprise a bent portion 24, as shown in Figs. 1a and 1b .
  • This bent portion 24 is located between the last top bent portion 22 and the bottom side edge 23, preferably closer to the former.
  • the bent portion 24 is shaped so that the terminal adjacent wall 21 runs substantially in parallel to the side wall 13, in a distanced manner, between said bent portion 24 and the bottom side edge 23.
  • the general shape of the side wall 13 is followed in a substantially parallel manner by the general shaper of the terminal adjacent wall 21. This enhances the uniform distribution of the fin within the tube and reduces to a greater extent, and with appropriately chosen distancing - possibly eliminates, the air by-pass.
  • the distance Hf between the bottom side edge 23 and the top wall 11 may be 6 mm, while the distance Ht between the bottom wall 11 and the top wall 12 may be 7 mm.
  • the distance T2 between the bottom side edge 23 and the adjacent bottom bent portion 22 may be 4,5mm, while the distance T1 between the adjacent bottom end portions 22 may be 2,5 mm.
  • both side walls and their respective corner sections can have a layered structure.
  • the structure of the end wall of the fin will then apply analogously to both sides, with a logical adaptation of dependencies between elements denoted as 'top' elements and 'bottom' elements.

Claims (5)

  1. Flachrohranordnung 1 für einen Wärmetauscher, mit einem Flachrohr 10 und einer im Inneren des Rohres 10 angeordneten Rippe 20, wobei das Flachrohr 10 aus einem Blechmaterial gebildet und durch eine untere Wand 11, eine obere Wand 12 und zwei Seitenwände 13 begrenzt ist, wobei der Abstand zwischen der unteren Wand 11 und der oberen Wand 12 die Höhenrichtung H mit der Rohrhöhe Ht definiert und der Abstand zwischen den Seitenwänden 13 die Breitenrichtung W definiert, wobei mindestens eine der Seitenwände 13 und ein Eckabschnitt 14 zwischen der unteren Wand 11 und dieser Seitenwand 13 durch Schichten des Blechmaterials gebildet werden, und wobei die Rippe 20 ein gewelltes Blech mit einer Vielzahl von angrenzenden Wänden ist, die an oberen und unteren gebogenen Abschnitten 22 verbunden sind, die die Ober- bzw. untere Wand 11, 12 des Rohrs 10 berühren, wobei die angrenzenden gebogenen Abschnitte 22 um einen im Wesentlichen konstanten Abstand T1 voneinander beabstandet sind, wobei eine angrenzende Endwand 21 der Rippe 10 eine untere Seitenkante 23 aufweist, die von dem angrenzenden unteren gebogenen Abschnitt 22 entlang der Breitenrichtung W um einen Abstand T2 beabstandet ist, der größer als der Abstand T1 ist, und von der obere Wand 12 entlang der Höhenrichtung H um einen Abstand Hf beabstandet ist, der kleiner als Ht ist, dadurch gekennzeichnet, dass die angrenzende Endwand 21 einen gebogenen Abschnitt 24 aufweist, sodass die angrenzende Endwand 21 im Wesentlichen parallel zur Seitenwand 13 beabstandet zwischen dem gebogenen Abschnitt 24 und der unteren Seitenkante 23 verläuft.
  2. Flachrohranordnung gemäß Anspruch 1, wobei die untere Seitenkante 23 der angrenzenden Endwand 21 der Rippe 10 die Seitenwand 13 des Flachrohrs 10 berührt.
  3. Flachrohr gemäß einem der vorhergehenden Ansprüche, wobei der gebogene Abschnitt 24 näher an dem letzten oberen gebogenen Abschnitt 22 als an der unteren Seitenkante 23 angeordnet ist.
  4. Flachrohr gemäß einem der vorhergehenden Ansprüche, wobei der Abstand Hf zwischen der unteren Seitenkante 23 und der oberen Wand 11 7 mm beträgt, während der Abstand Ht zwischen der unteren Wand 11 und der oberen Wand 12 6 mm beträgt.
  5. Flachrohr gemäß einem der vorhergehenden Ansprüche, wobei der Abstand T2 zwischen der unteren Seitenkante 23 und dem angrenzenden unteren gebogenen Abschnitt 22 2,5 mm beträgt, während der Abstand T1 zwischen den angrenzenden unteren Endabschnitten 22 4,5 mm beträgt.
EP18461515.1A 2018-02-06 2018-02-06 Flachrohranordnung für einen wärmetauscher Active EP3521745B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18461515.1A EP3521745B1 (de) 2018-02-06 2018-02-06 Flachrohranordnung für einen wärmetauscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18461515.1A EP3521745B1 (de) 2018-02-06 2018-02-06 Flachrohranordnung für einen wärmetauscher

Publications (2)

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EP3521745A1 EP3521745A1 (de) 2019-08-07
EP3521745B1 true EP3521745B1 (de) 2022-10-05

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EP18461515.1A Active EP3521745B1 (de) 2018-02-06 2018-02-06 Flachrohranordnung für einen wärmetauscher

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008013018A1 (de) * 2008-03-07 2009-09-10 Modine Manufacturing Co., Racine Flaches Wärmetauscherrohr

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0552563U (ja) * 1991-12-20 1993-07-13 サンデン株式会社 熱交換器用チュ−ブ
GB2324145A (en) * 1997-04-07 1998-10-14 Rollsec Ltd Heat exchanger element
US6192977B1 (en) 1999-09-29 2001-02-27 Valeo Thermique Moteur Tube for heat exchanger
US20080078536A1 (en) 2006-09-29 2008-04-03 International Truck Intellectual Property Company, Llc Corrosion resistant bi-metal charge air cooler
DE102007033177A1 (de) * 2007-07-17 2009-01-22 Modine Manufacturing Co., Racine Kühlflüssigkeitskühler
DE102012211350A1 (de) * 2012-06-29 2014-01-02 Behr Gmbh & Co. Kg Flachrohr und Wärmeübertrager mit einem solchen Flachrohr
PL228722B1 (pl) * 2014-12-30 2018-04-30 Valeo Autosystemy Spolka Z Ograniczona Odpowiedzialnoscia Żebro turbulizujące dla zespołu rurowo-żebrowego przystosowanego dla wymiennika ciepła, walec kształtujący żebro turbulizujące oraz zespół składający się z rury dla wymiennika ciepła i żebra turbulizującego oraz wymiennik ciepła

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008013018A1 (de) * 2008-03-07 2009-09-10 Modine Manufacturing Co., Racine Flaches Wärmetauscherrohr

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