EP2185884B1 - Ailette pour un échangeur de chaleur - Google Patents

Ailette pour un échangeur de chaleur Download PDF

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Publication number
EP2185884B1
EP2185884B1 EP08784947A EP08784947A EP2185884B1 EP 2185884 B1 EP2185884 B1 EP 2185884B1 EP 08784947 A EP08784947 A EP 08784947A EP 08784947 A EP08784947 A EP 08784947A EP 2185884 B1 EP2185884 B1 EP 2185884B1
Authority
EP
European Patent Office
Prior art keywords
lug
edge
wall surface
fin according
fin
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.)
Not-in-force
Application number
EP08784947A
Other languages
German (de)
English (en)
Other versions
EP2185884A1 (fr
Inventor
Hermann Knaus
Florian Schmidt
Stefan RÖSLER
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
Original Assignee
Behr GmbH and Co KG
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 filed Critical Behr GmbH and Co KG
Publication of EP2185884A1 publication Critical patent/EP2185884A1/fr
Application granted granted Critical
Publication of EP2185884B1 publication Critical patent/EP2185884B1/fr
Not-in-force 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
    • F28F1/126—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
    • F28F1/128—Fins with openings, e.g. louvered 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
    • F28F1/24—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
    • 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
    • F28F3/027—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 with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips

Definitions

  • the invention relates to a rib for a heat exchanger according to the preamble of claim 1.
  • ribs in fluid-flow channels are provided to improve the heat exchanger performance.
  • Such ribs may be formed, for example, as smooth ribs, gill ribs or ribbed ribs.
  • Web ribs show a particularly significant improvement in the heat exchange performance given the size, but also mean an often undesirably large pressure drop across the flow channel.
  • Web ribs are used inter alia in intercoolers of motor vehicles, and mainly on the side of the charge air.
  • DD 0 152 187 describes a strip-shaped tube installation element for shell and tube heat exchangers in the petrochemical industry, in which trapezoidal louvers are provided for generating turbulence.
  • the louvers have a variable width in the direction of flow, the lugs being bent out of the strip by an angle of greater than 30 ° about a longer of two parallel edges of the trapezoid.
  • the JP 63-025492 reveals exhibitions of a sheet produced by cutting.
  • the first edge, end edges of the side walls and a second straight edge of the wall form a rectangle oriented perpendicular to the flow direction and permeable by the first fluid.
  • a long side of the rectangle corresponds to the first edge and has a length which is approximately five times the length of a short side of the rectangle.
  • the length of the tab surface in the flow direction is approximately eight times the length of the short sides of the rectangle.
  • the leaching is preferably formed mirror-symmetrically with respect to a central plane of symmetry and further preferably, a width of the tab surface decreases with increasing distance from the first edge.
  • an opposite with respect to the first edge end of the tab surface has a smallest width, wherein the smallest width is advantageously not more than a tenth, in particular about one-twelfth of the length of the first edge.
  • the curvature of one of the side walls in its course also has at least one point of inflection with respect to the direction of curvature.
  • the inclination of the tab surface relative to the wall surface is approximately in a preferred embodiment seven degrees. Overall, this is a hood-like leaching provided with very low pressure drop with good heat transfer of the air flowing through, as has been shown by experiments.
  • the shape of the tab surface starting from the first edge has approximately the parameterization [0; 2,500], [0.805; 2,470], [1.610; 2,290], [2,420; 1,910], [3,220; 1.540], [4.030; 1,210], [4,840; 0.980], [5.640; 0.780], [6.440; 0.590], [7.240; 0.400], [8.050; 0.210].
  • This parameterization is to be understood such that the first value in each case indicates the distance from the first edge and the second value in each case the distance from a central axis of symmetry to one of the two mirror-symmetrical side walls.
  • This parameterization corresponds, except for a significant scaling factor, to the shape of the air intake described in the NACA RM A9L29 report.
  • the rib in the flow direction on several consecutively arranged leaching resulting in particular in long ribs a meaningful arrangement for the purpose of multiple deflection of the air over the ribs. Otherwise, the air flow would be influenced only over part of the rib in an advantageous manner by the leaching.
  • At least two latches are provided with different opening direction.
  • the invention further relates to a heat exchanger with at least one rib according to the invention according to one of claims 1 to 12.
  • FIG. 1 shown embodiment of the invention comprises a rib 1 made of a multi-bent aluminum sheet. Between two parallel wall surfaces 1a, a flow channel 2 is formed through which flows a first fluid of the heat exchanger, in this case air, in the direction of the arrow A or in the opposite direction according to the arrow A '.
  • the heat exchanger is constructed such that a plurality of the ribs 1 are arranged side by side to form parallel adjacent flow channels 2.
  • Above and below the ribs 1 exchanger tubes or partitions (not shown) which delimit a second fluid, surface connected to the ribs 1.
  • the tab surface 4 has a first straight edge 5, which extends perpendicular to the flow direction A, A 'and parallel to the wall surface 1a.
  • the wall surface 1a is a congruent to the tab surface recess with a second straight edge 6 is present.
  • the tab surface 4 is connected to the wall surface 1a of the rib by way of two curved side walls 7, 8, which are arranged mirror-symmetrically with respect to each other in relation to an axis of symmetry S of the flap.
  • the side walls 7, 8 of the Auslaschung are perpendicular to the wall surface 1a of the rib 1. According to the inclination of the tab surface 4, the height of the side walls 7, 8 in the flow direction A to or in the reverse, also possible flow direction A 'from.
  • the rectangle 9 has an aspect ratio of 1: 5, with the long sides of the rectangle formed by the first and second straight edges 5, 6.
  • the curved, mutually mirror-symmetrical side walls 7, 8 have in the flow direction A at their beginning first a smallest distance from each other, wherein the distance over the length L of the tab surface grows monotonously. Both at the beginning of their course as well as at the end of the side walls are approximately parallel to the axis of symmetry S, so that they meet at the end of their course approximately perpendicular to the first and second straight edge 5, 6 (see Fig. 2 ).
  • the length L of the tab surface 4 is approximately eight times the height maximum height of the side walls 7, 8.
  • the first digit of a coordinate pair [x; y] the distance in the direction of the axis of symmetry S, starting from the first edge 6, ie opposite to the flow direction A.
  • the second digit y describes at this point the vertical distance of a side wall of the axis of symmetry S.
  • the sidewalls 7, 8 have a maximum height of about 1.0, and the maximum width B of the tab surface 4 that extends along the first straight edge is 5.0.
  • the air flowing through the flow channel 2 along the wall surface 1a can pass through the opening 9, being both swirled and exchanged with an adjacent flow channel. Due to the rising course of the tab surface and the curved diverging side walls a flow dynamic particularly favorable shape is achieved, which achieves a good heat exchange at low pressure drop.
  • Fig. 3 a development of the rib according to the invention is shown, in which a plurality of louvers 3 are arranged one after the other in the flow direction. Two successive lapses are reversed in terms of their opening direction in the wall surface 1a, that is, alternately formed. As a result, a uniform and optimal turbulence of the air is achieved, especially with long flow channels 2.

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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)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (12)

  1. Ailette pour un échangeur de chaleur, comprenant :
    - un corps d'ailette (1) s'étendant dans une direction d'écoulement (A, A') d'un premier fluide et comportant une surface de paroi (1a) baignée des deux côtés par le premier fluide,
    où il est prévu, dans la surface de paroi (1a), au moins une patte ajourée (3) formant surépaisseur, à travers laquelle est configurée une ouverture (9) de la surface de paroi (1a) prouvant être traversée par le premier fluide,
    où une première arête droite (5) de la patte ajourée (3) formant surépaisseur s'étend perpendiculairement à la direction d'écoulement (A, A') et, pour la configuration de l'ouverture (9), est disposée en étant espacée de la surface de paroi,
    où la patte ajourée (3) formant surépaisseur présente une surface de patte (4) lisse et inclinée qui se termine par la première arête droite (5),
    où la surface de patte (4) est reliée à la surface de paroi (1a) par deux parois latérales (7, 8) de la patte ajourée (3) formant surépaisseur, s'étendant de façon courbe et symétrique l'une par rapport à l'autre, patte ajourée formant surépaisseur qui est orientée perpendiculairement à la surface de paroi (1a) et qui, à partir de la première arête (5), présente une hauteur diminuant de façon correspondant à l'inclinaison de la surface de patte (4).
  2. Ailette selon la revendication 1, caractérisée en ce que la première arête (5) forme des arêtes d'extrémité (7a, 8a) des parois latérales, et une deuxième arête droite (6) de la surface de paroi (1a) forme un rectangle (9) orienté perpendiculairement à la direction d'écoulement (A, A') et pouvant être traversé par le premier fluide.
  3. Ailette selon la revendication 2, caractérisée en ce qu'un grand côté du rectangle (9) correspond à la première arête (5) et présente une longueur qui correspond à peu près à cinq fois la longueur d'un petit côté (7a, 8a) du rectangle.
  4. Ailette selon la revendication 2 ou la revendication 3, caractérisée en ce que la longueur (L) de la surface de patte (4), dans la direction d'écoulement (A, A'), correspond à peu près à huit fois la longueur des petits côtés (7a, 8a) du rectangle.
  5. Ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que la patte ajourée (3) formant surépaisseur est configurée en étant symétrique par rapport à un axe de symétrie central (S).
  6. Ailette selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une largeur de la surface de patte (4) diminue quand augmente la distance par rapport à la première arête (5).
  7. Ailette selon la revendication 6, caractérisée en ce qu'une extrémité de la surface de patte, placée à l'opposé de la première arête (5), présente une largeur qui est la plus petite, où la plus petite largeur ne mesure pas plus qu'un dixième, en particulier à peu près un douzième de la longueur (B) de la première arête (5).
  8. Ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que la courbure de l'une des parois latérales (7, 8) présente, dans son profil, au moins un point d'inflexion par rapport à la direction de courbure.
  9. Ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que l'inclinaison de la surface de patte (4) est à peu près de sept degrés par rapport à la surface de paroi (1a).
  10. Ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que la forme de la surface de patte (4), à partir de la première arête (5), présente à peu près les paramètres qui suivent : [0 ; 2,500], [0,805 ; 2,470], [1,610 ; 2,290], [2,420 ; 1,910], [3,220 ; 1,540], [4,030 ; 1,210], [4,840 ; 0,980], [5,640 ; 0,780], [6,440 ; 0,590], [7,240 ; 0,400], [8,050 ; 0,210], où la première valeur indique à chaque fois la distance par rapport à la première arête (5), la deuxième valeur indiquant à chaque fois la distance d'un axe de symétrie central (S) par rapport à une paroi latérale (7, 8).
  11. Ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ailette (1) présente, dans la direction d'écoulement, plusieurs pattes ajourées (3) formant surépaisseur placées les unes derrière les autres.
  12. Ailette selon l'une quelconque des revendications précédentes, caractérisée en ce qu'il est prévu, dans la surface de paroi (1a), au moins deux pattes ajourées (3) formant surépaisseur ayant une direction d'ouverture différente.
EP08784947A 2007-07-31 2008-07-22 Ailette pour un échangeur de chaleur Not-in-force EP2185884B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007036308A DE102007036308A1 (de) 2007-07-31 2007-07-31 Rippe für einen Wärmetauscher
PCT/EP2008/005983 WO2009015805A1 (fr) 2007-07-31 2008-07-22 Ailette pour un échangeur de chaleur

Publications (2)

Publication Number Publication Date
EP2185884A1 EP2185884A1 (fr) 2010-05-19
EP2185884B1 true EP2185884B1 (fr) 2011-01-05

Family

ID=39968008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08784947A Not-in-force EP2185884B1 (fr) 2007-07-31 2008-07-22 Ailette pour un échangeur de chaleur

Country Status (6)

Country Link
US (1) US20100193172A1 (fr)
EP (1) EP2185884B1 (fr)
CN (1) CN101790671B (fr)
AT (1) ATE494521T1 (fr)
DE (2) DE102007036308A1 (fr)
WO (1) WO2009015805A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2096397B1 (fr) * 2007-10-08 2015-01-21 Behr GmbH & Co. KG Ailette pour un échangeur thermique
CN103245248A (zh) * 2012-02-10 2013-08-14 上海协合散热器制造有限公司 一种新型矩形散热带
DE102017208324A1 (de) * 2017-05-17 2018-11-22 Mahle International Gmbh Wärmeübertrager
NL2019040B1 (en) * 2017-06-09 2018-12-17 Optixolar Holding B V Heat sink panel for a photovoltaic panel
CN110307745A (zh) * 2019-07-15 2019-10-08 浙江工业大学 一种带犁形微凸的板翅式换热器翅片

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DD152187A1 (de) 1980-07-23 1981-11-18 Ernst Roth Streifenfoermiges rohreinbauelement
JPS6012088U (ja) * 1983-06-30 1985-01-26 カルソニックカンセイ株式会社 熱交換器
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JPH0769114B2 (ja) * 1986-05-31 1995-07-26 カルソニック株式会社 熱交換器用フインの製造方法
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US5669438A (en) * 1996-08-30 1997-09-23 General Motors Corporation Corrugated cooling fin with louvers
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JP2002277180A (ja) * 2001-03-16 2002-09-25 Calsonic Kansei Corp 一体型熱交換器のコア部構造
FR2824895B1 (fr) * 2001-05-18 2005-12-16 Air Liquide Ailette ondulee a persiennes pour echangeur de chaleur a plaques, et echangeur a plaques muni de telles ailettes
AU2003270279A1 (en) * 2002-09-28 2004-04-23 Ebm-Papst St. Georgen Gmbh And Co. Kg Arrangement and method for removing heat from a component which is to be cooled
EP1606569B1 (fr) * 2003-03-26 2007-06-27 Calsonic Kansei Corporation Ailette interieure a fenetre decoupee pour echangeur thermique
BRPI0415965B1 (pt) * 2003-10-28 2018-06-12 MAHLE Behr GmbH & Co. KG Canal de corrente para um trocador de calor e trocador de calor com canais de corrente desse tipo
DE202004013882U1 (de) * 2004-09-03 2006-01-12 Autokühler GmbH & Co. KG Wärmeübertragungsbauteil und damit hergestellter Wärmeaustauscher
EP2096397B1 (fr) * 2007-10-08 2015-01-21 Behr GmbH & Co. KG Ailette pour un échangeur thermique

Also Published As

Publication number Publication date
CN101790671A (zh) 2010-07-28
WO2009015805A1 (fr) 2009-02-05
DE502008002244D1 (de) 2011-02-17
WO2009015805A8 (fr) 2010-06-24
CN101790671B (zh) 2012-06-27
ATE494521T1 (de) 2011-01-15
EP2185884A1 (fr) 2010-05-19
US20100193172A1 (en) 2010-08-05
DE102007036308A1 (de) 2009-02-05

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