EP1348100B1 - Wärmetauscher mit gelöteten platten - Google Patents

Wärmetauscher mit gelöteten platten Download PDF

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Publication number
EP1348100B1
EP1348100B1 EP01989656A EP01989656A EP1348100B1 EP 1348100 B1 EP1348100 B1 EP 1348100B1 EP 01989656 A EP01989656 A EP 01989656A EP 01989656 A EP01989656 A EP 01989656A EP 1348100 B1 EP1348100 B1 EP 1348100B1
Authority
EP
European Patent Office
Prior art keywords
exchanger according
subpattern
pattern
corrugation
exchanger
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 - Lifetime
Application number
EP01989656A
Other languages
English (en)
French (fr)
Other versions
EP1348100A1 (de
Inventor
Claire Turgis
Fabienne Chatel
Etienne Werlen
Gilles Lebain
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP1348100A1 publication Critical patent/EP1348100A1/de
Application granted granted Critical
Publication of EP1348100B1 publication Critical patent/EP1348100B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
    • F28D9/0068—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements with means for changing flow direction of one heat exchange medium, e.g. using deflecting zones
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/108—Particular pattern of flow of the heat exchange media with combined cross flow and parallel flow

Definitions

  • the present invention relates to a brazed plate heat exchanger, the passages of which contain at least one corrugated fin of the type comprising in cross section a corrugated repeating pattern which extends between two extreme upper and lower planes defined by the plates of the exchanger.
  • the invention is particularly applicable to gas-gas cryogenic exchangers of air distillation apparatuses, such as the main heat exchange line of these apparatus, which cools the incoming air by indirect heat exchange with the cold products. from the distillation column.
  • corrugated fins in question are widely used in brazed plate heat exchangers, which have the advantage of offering a large heat exchange area in a relatively small volume, and of being easy to manufacture.
  • the flows of the fluids can be co-current, countercurrent or crossed.
  • FIG. 1 of the accompanying drawings shows in perspective, with partial cutaway, an example of such a heat exchanger of conventional structure to which the invention applies. It can be in particular a cryogenic heat exchanger.
  • the heat exchanger 1 shown consists of a stack of parallel rectangular plates 2 all identical, which define between them a plurality of passages for fluids to put in indirect heat exchange relationship.
  • these passages are successively and. cyclically passages 3 for a first fluid, 4 for a second fluid and 5 for a third fluid.
  • Each passage 3 to 5 is bordered by closing bars 6 which delimit it leaving free windows 7 input / output of the corresponding fluid.
  • waves-eatretoises or corrugated fins 8 serving both thermal fins, spacers between the plates, especially during brazing and to prevent any deformation of the plates during the implementation of fluids under pressure and guiding fluid flows.
  • the stack of plates, closing bars and wave-spacers is generally made of aluminum or aluminum alloy and is assembled in a single operation by soldering in the oven.
  • Fluid inlet / outlet boxes 9, of generally semi-cylindrical shape, are then welded to the exchanger body thus produced so as to cover the rows of corresponding inlet / outlet windows, and they are connected to conduits 10 for supplying and evacuating fluids.
  • spacers-waves 8 There are various types of spacers-waves 8. It is possible to cite the straight fins, with rectilinear generatrices, possibly perforated, so-called “herringbone” fins, with sinuous generatrices, louvered fins, the wavelengths of which have rows of punctured, and partial offset fins where 'serrated'.
  • the cross section of the wave can be square, rectangular, triangular, sinusoidal, and so on.
  • US-A-3016921 discloses an exchanger according to the preamble of claim 1.
  • the object of the invention is to improve the thermal performance of corrugated fin exchangers.
  • the serrated fin 1 shown in Figuras 2 and 3 has a main direction of corrugation D1 and includes a large number of adjacent identical wave rows 12A, 12B, ..., oriented in a direction D2 perpendicular to the direction D1.
  • Each wave array 12 has, in cross section perpendicular to D1, a base pattern M which has two vertical wave legs 13. With respect to a general direction F of fluid flow along the direction D1 in the passage considered, each leg has an edge 14 and a trailing edge 15. The legs are alternately connected along their upper edge by a rectangular, plane and horizontal wave vertex 16, and along their lower edge by a wave base 17 also rectangular, flat and horizontal.
  • the basic pattern M is modified by a sub-pattern M1 consisting of a rectangular projection extending downwards in the middle of each vertex 16 and upwards in the middle of each base 17.
  • Each sub-pattern M1 consists of a flat end portion 18 located midway from the end planes defined by the adjacent plates 2, and two vertical tabs 19 which connect the edges to the apex 16 or to the corresponding base 17 .
  • each sub-pattern forms a slot that enters between the two legs 13 adjacent.
  • This slot defines three additional exchange surfaces, namely a horizontal exchange surface 20 and two vertical exchange surfaces 21.
  • the rows 12 are offset relative to each other in the direction D2, alternately in one direction and the other.
  • step the distance p between two successive legs 12 (ignoring the thickness e of the thin sheet material constituting the wave)
  • the offset is p / 6 alternately in one direction and in the other. other, while the width of the slot M1 is p / 3.
  • each row '12 is connected to the next row 12 by the vertices 16, along line segments 22 of length p / 6, and by the bases 17, along line segments 23 of the same length p / 6.
  • the offset planes are the vertical planes such as P AB and the offset lines, in top view, are designated 24.
  • each row 12 in the direction D1 designates the length of each row 12 in the direction D1, the length being called “serration length”, and by h the height of the fin.
  • the shapes of the various parts of the waves may differ more or less from the theoretical forms described above, in particular as regards the flatness and the rectangular shape of the facets 13 and 16 to 19, and the verticality of the facets 13 and 19 .
  • the patterns M are offset laterally with respect to themselves and with respect to the patterns M1, that is to say that the legs 13 of a given serration row 12 appear each between one leg 13 of adjacent rows and a tab 19 of a sub-pattern M1 neighbor. Conversely, the legs 19 of the same row. 12 each appear between two legs 19 or between a tab 19 and a leg 13, adjacent rows 12.
  • the flow separation is increased at each shift line 24, which increases the temperature difference between the fluid and the fin and thereby increases the heat exchange flux.
  • the presence of additional leading edges 20 and 21 further generates vortices within the fluid which promote convective heat transfer to the flow core and not conduction through the boundary layer, which is favorable to heat exchange.
  • the variant of Figure 4 differs from that of Figure 3 by a greater depth of slots M1, this depth from h / 2 to 2/3 hours. In this way, the preferential flow zones which escape the beneficial effect of the M1 slots described above are reduced.
  • FIGS. 5 and 6 show two adjacent vertical planes P1 and P2 to facilitate understanding of the structure of the fin.
  • each subpattern M1 is triangular and no longer rectangular or square. It thus introduces into each wave two oblique leading edges 25, symmetrical with respect to the vertical plane of symmetry P of the wave.
  • the height of the triangle is h / 2, but, as before, it may have a different value, especially greater than h / 2 to reduce the preferential flow areas.
  • the manufacture of the fins can be achieved by simply folding a flat product to the press or the wheel, as for the corrugated fins, including serrated, conventional. Indeed, the surfaces are all developable, so that it suffices to adapt the profile of the folding tools.
  • sub-patterns M1 causes passage restrictions at the shift lines, and therefore pressure drops. These pressure losses may be reduced by providing notches judiciously placed in at least some leading edges and / or leakage patterns M and / or M1. These indentations will preferably be located opposite the attacking and / or trailing edges of the sub-motifs M1, or in these, as shown in phantom at 26 in FIG. 2.
  • fin whatever the type of fin, it can be made from either a solid sheet, a perforated sheet or otherwise provided with lights.

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

Claims (13)

  1. Wärmetauscher mit gelöteten Platten von der Art, die einen Stapel von parallelen Platten (2), die mehrere Fluidzirkulationsdurchlässe (3 bis 5) von im Allgemeinen flacher Form definieren, Verschlussleisten (6), die diese Durchlässe begrenzen, und gewellte Rippen (8) aufweist, die in den Durchlässen angeordnet sind, wobei mindestens ein Teil der gewellten Rippen (8) von der Art ist, die im Querschnitt ein sich wiederholendes Wellenmuster aufweist, das sich zwischen zwei Endebenen, einer oberen und einer unteren, erstreckt, die von zwei benachbarten Platten des Wärmetauschers definiert werden, wobei das Muster ein Basiswellenmuster (M) aufweist, das Wellenbeine (13) enthält, die durch Wellenscheitel (16) und Wellengründe (17) verbunden werden, dadurch gekennzeichnet, dass dieses Basismuster durch ein Untermuster (M1) verändert wird, das zwischen zumindest bestimmten Paaren von Wellenbeinen zusätzliche Austauschflächen (20, 21) definiert, die sich auf einer Zwischenhöhe zwischen den beiden Endebenen befinden.
  2. Tauscher nach Anspruch 1, dadurch gekennzeichnet, dass das Untermuster (M1) eine Unterwellenform definiert, die sich nur über einen Bruchteil der Entfernung erstreckt, die die beiden Endebenen trennt.
  3. Tauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Untermuster mindestens einen nicht senkrechten Bereich (18) aufweist, der sich auf einer Zwischenhöhe zwischen den beiden Endebenen befindet.
  4. Tauscher nach Anspruch 3, dadurch gekennzeichnet, dass das Untermuster (M1) außerdem Paare von Laschen (19) aufweist, die die nicht senkrechten Bereiche (18) abwechselnd mit einem Wellenscheitel (16) bzw. einem Wellengrund (17) verbinden.
  5. Tauscher nach Anspruch 4, dadurch gekennzeichnet, dass die Laschen (19) senkrecht sind.
  6. Tauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Untermuster (M1) mindestens eine zusätzliche schräge Austauschfläche (25) aufweist.
  7. Tauscher nach Anspruch 6, dadurch gekennzeichnet, dass das Untermuster (M1) einen V-förmigen Querschnitt hat.
  8. Tauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Untermuster (M1) eine Stufe (24, 25) aufweist, die mindestens bestimmten Beinen (13) des Hauptmusters (M) benachbart ist.
  9. Tauscher nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Rippe (11) teilversetzt ist.
  10. Tauscher nach Anspruch 9, dadurch gekennzeichnet, dass die Versetzabstände ein Versetzen des Hauptmusters (M) sowohl zu sich selbst als auch zum Untermuster (M1) gewährleisten.
  11. Tauscher nach Anspruch 10, dadurch gekennzeichnet, dass das Muster (M, M1) sich alle N Reihen von Wellen wieder findet, mit N ≥ 3.
  12. Tauscher nach Anspruch 11, dadurch gekennzeichnet, dass N = 4.
  13. Tauscher nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass mindestens bestimmte Bereiche mindestens bestimmter Basismuster (M) und/oder Untermuster (M1) einen Ausschnitt (26) auf mindestens einem vorderen und/oder hinteren Rand und auf mindestens einem Teil ihrer Höhe oder ihrer Breite aufweisen.
EP01989656A 2000-12-28 2001-12-21 Wärmetauscher mit gelöteten platten Expired - Lifetime EP1348100B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0017178 2000-12-28
FR0017178A FR2819048B1 (fr) 2000-12-28 2000-12-28 Ailette ondulee pour echangeur de chaleur a plaques brasees et echangeur de chaleur correspondant
PCT/FR2001/004141 WO2002054000A1 (fr) 2000-12-28 2001-12-21 Echangeur de chaleur a plaques brasees

Publications (2)

Publication Number Publication Date
EP1348100A1 EP1348100A1 (de) 2003-10-01
EP1348100B1 true EP1348100B1 (de) 2006-03-15

Family

ID=8858307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01989656A Expired - Lifetime EP1348100B1 (de) 2000-12-28 2001-12-21 Wärmetauscher mit gelöteten platten

Country Status (7)

Country Link
US (1) US7059397B2 (de)
EP (1) EP1348100B1 (de)
JP (1) JP3974526B2 (de)
CN (1) CN1284958C (de)
DE (1) DE60118029T2 (de)
FR (1) FR2819048B1 (de)
WO (1) WO2002054000A1 (de)

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CA2471969A1 (en) * 2004-06-23 2005-12-23 Lionel Gerber Heat exchanger for use in an ice machine
US7434765B2 (en) * 2005-02-16 2008-10-14 The Boeing Company Heat exchanger systems and associated systems and methods for cooling aircraft starter/generators
FR2887020B1 (fr) * 2005-06-09 2007-08-31 Air Liquide Echangeur de chaleur a plaques avec structure d'echange formant plusieurs canaux dans un passage
JP4881583B2 (ja) * 2005-06-27 2012-02-22 株式会社豊田自動織機 パワーモジュール用ヒートシンク
FR2895493B1 (fr) * 2005-12-22 2009-01-23 Air Liquide Nouvelles ondes d'echange de chaleur et leurs applications
WO2007105992A1 (en) * 2006-03-13 2007-09-20 Volvo Lastvagnar Ab Heat exchanger for egr-gas
JP4818044B2 (ja) * 2006-09-28 2011-11-16 三洋電機株式会社 熱交換器の製造方法
JP2009204182A (ja) * 2008-02-26 2009-09-10 Denso Corp 熱交換器
FR2938904B1 (fr) * 2008-11-24 2012-05-04 Air Liquide Echangeur de chaleur
US20100192628A1 (en) * 2009-01-30 2010-08-05 Richard John Jibb Apparatus and air separation plant
US8726691B2 (en) * 2009-01-30 2014-05-20 Praxair Technology, Inc. Air separation apparatus and method
US20100192629A1 (en) * 2009-01-30 2010-08-05 Richard John Jibb Oxygen product production method
KR100938802B1 (ko) * 2009-06-11 2010-01-27 국방과학연구소 마이크로채널 열교환기
FR2950682B1 (fr) * 2009-09-30 2012-06-01 Valeo Systemes Thermiques Condenseur pour vehicule automobile a integration amelioree
US9303925B2 (en) 2012-02-17 2016-04-05 Hussmann Corporation Microchannel suction line heat exchanger
US20150241141A1 (en) * 2012-10-09 2015-08-27 Linde Aktiengesellschaft Temperature measurement by means of an optical waveguide in a plate heat exchanger
US10422588B2 (en) * 2014-08-21 2019-09-24 Trane International Inc. Heat exchanger coil with offset fins
CN106762018A (zh) * 2016-12-05 2017-05-31 蚌埠市国乐汽配有限公司 一种箱式机油冷却器
FR3071595B1 (fr) * 2017-09-28 2020-05-22 F2A - Fabrication Aeraulique Et Acoustique Echangeur air/air a double flux a contre-courant
US11454448B2 (en) 2017-11-27 2022-09-27 Dana Canada Corporation Enhanced heat transfer surface
DE102018003479A1 (de) * 2018-04-27 2019-10-31 Linde Aktiengesellschaft Plattenwärmetauscher, verfahrenstechnische Anlage und Verfahren
JP7199533B2 (ja) * 2019-06-03 2023-01-05 三菱電機株式会社 プレート式熱交換器及び伝熱装置

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Also Published As

Publication number Publication date
US20040144525A1 (en) 2004-07-29
CN1284958C (zh) 2006-11-15
US7059397B2 (en) 2006-06-13
FR2819048A1 (fr) 2002-07-05
WO2002054000A1 (fr) 2002-07-11
EP1348100A1 (de) 2003-10-01
JP3974526B2 (ja) 2007-09-12
FR2819048B1 (fr) 2005-08-19
CN1483134A (zh) 2004-03-17
DE60118029D1 (de) 2006-05-11
JP2004517293A (ja) 2004-06-10
DE60118029T2 (de) 2006-12-28

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