EP0686823B1 - Wärmetauscher, insbesondere für die Kühlung eines Luftstromes mit hoher Temperatur - Google Patents

Wärmetauscher, insbesondere für die Kühlung eines Luftstromes mit hoher Temperatur Download PDF

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Publication number
EP0686823B1
EP0686823B1 EP95108599A EP95108599A EP0686823B1 EP 0686823 B1 EP0686823 B1 EP 0686823B1 EP 95108599 A EP95108599 A EP 95108599A EP 95108599 A EP95108599 A EP 95108599A EP 0686823 B1 EP0686823 B1 EP 0686823B1
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EP
European Patent Office
Prior art keywords
shells
tubes
exchanger according
shell
flat
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
EP95108599A
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English (en)
French (fr)
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EP0686823A1 (de
Inventor
Jean-Louis Laveran
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 Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
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Publication date
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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
    • 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
    • F28D1/05358—Assemblies of conduits connected side by side or with individual headers, e.g. section 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221—Header boxes or end plates formed by stacked 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
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/04—Means for preventing wrong assembling of parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49389—Header or manifold making

Definitions

  • the invention relates to a heat exchanger of the type comprising a bundle of tubes mounted between two manifolds as defined in the preamble of claim 1.
  • Such heat exchangers are mainly used in as air / water exchangers and find applications various in the automotive industry, especially to serve cooling an engine or heating the passenger compartment.
  • heat exchangers of this type could not to prevail, given the high temperatures involved, for the treatment of a high temperature air flow, such as cooling an air flow from the turbocharger of a motor or industrial vehicle.
  • the air flow from a turbocharger is at a high temperature, generally around 250 ° C, which must be lowered to a temperature of around 100 ° C by heat exchange with cooling water or cooling air.
  • heat exchangers plates and bars which include two fluid boxes, a multiplicity of spacer bars arranged by pairs, as well as a multiplicity of plates arranged by pairs to frame the pairs of bars and form collaboration with them fluid circulation channels.
  • a heat exchanger of this type is known in particular from French Patent No 80 06 704 published under No 2,479,438.
  • each manifold includes a stack of joined shells in pairs, and in which each shell comprises a wall closed side with one end connected to a flange exterior plane and of which another end is connected to a inner flat edge which extends parallel to the flat edge exterior and which delimits an axial opening, the wall lateral of each shell delimiting a lateral opening whose section is adapted to the right half-section of a tube, so that the shells can be assembled by pairs alternately by their inner edges and by their outer edges delimiting an internal chamber along the entire length of the stack and that the ends tubes can be received each in the two openings lateral of two adjacent shells.
  • the main drawback of plate and strip heat exchangers or shell stack exchangers resides in the complexity of assembling the different elements that make up and the respective immobilization of the elements the relative to each other.
  • the object of the invention is in particular to overcome such disadvantages.
  • It also aims to provide a heat exchanger of the type with manifolds and tube bundles which can be used for different applications and in particular for treatment of a high temperature air flow such as the flow air from a turbocharger.
  • the invention also aims to provide such an exchanger heat which can be easily assembled, in particular by soldering, while providing maximum safety in the final constitution of this exchanger.
  • the invention provides for this purpose a heat exchanger of type defined in the introduction, in which the flat edge outside of each shell includes indexing means suitable for ensuring correct relative positioning of the two shells of the same pair with a view to their assembly by their respective outer edges and wherein said edge exterior includes at least one folding crimp tab formed at the periphery for the assembly of the two shells of the same pair.
  • each of the manifolds is formed by a stack of shells, i.e. elements in the form of bowls, which can be assembled two by two between which can also be assembled at the ends beam tubes.
  • Such a heat exchanger can be easily produced by brazing of the shells and of the tubes together, said shells and said tubes being formed of a metal alloy appropriate.
  • a heat exchanger of this type is suitable especially for cooling the charge air from a turbocharger, the charge air entering one of the collecting chambers, traversing then the tubes of the beam before regaining and leaving the other collecting chamber.
  • High temperature charge air is cooled advantageously by an air flow which sweeps the tubes of the beam.
  • the lateral opening of a shell is bounded by a region set back from the inner rim, which region is closer to the plane of the outer rim than so is the interior ledge plan.
  • the tubes each have a substantially rectangular cross section bounded by two long sides and two short sides, the region set back from the inner rim comprising a central part of length substantially equal to one long side and two parts side length substantially equal to half of a small side.
  • the region in inner rim removal attaches to a region substantially straight on the side wall.
  • the side wall also comprises a substantially semicircular region which connects to this region straight.
  • the side wall has a shape in skin which flares out from the flat edge inside towards the outside edge.
  • This particular structure facilitates the realization of a shell by stamping or punching with a punch appropriate.
  • the means for indexing a shell include two folded legs each formed in a punctured on the outer rim and suitable for entering into corresponding openings of another shell. These legs can act as indexing legs and / or legs crimping.
  • the exchanger of the invention advantageously comprises corrugated heatsinks or spacers arranged on one side and on the other side of the bundle tubes.
  • the exchanger includes an end cheek that extends parallel to the tubes and which is assembled to the two shells located at a first end of each manifold, said cheek being equipped with two pipes respectively serving the admission and evacuation of a fluid passing through the fluid boxes and bundle tubes, while both shells located at a second end of each box collector are closed.
  • the heat exchanger shown in Figure 1 includes a fluid box 10 connected to an intake manifold 12, a fluid box 14 connected to a discharge pipe 16 and a bundle 18 mounted between the two manifolds 10 and 14.
  • the bundle 18 is formed by a multiplicity of tubes 20 parallel, of rectangular section, the ends of which respective open into the two manifolds. Between the tubes 20 are further arranged heatsinks 22 in the form of corrugated dividers.
  • the heat exchanger is suitable for being traversed by a first fluid, for example charge air from a turbocharger, which enters the manifold 10 through tubing 12, then runs through tubes 20 to go to the manifold 14 and leave it by the discharge pipe 16, as shown by the arrows F1.
  • a first fluid for example charge air from a turbocharger
  • This first fluid exchanges heat with a second fluid which scans the beam 18 as shown by the arrow F2.
  • Each of the manifolds 10 and 14 includes a stack identical shells assembled in pairs and alternately, one of which is shown in perspective in figure 2.
  • the shell 24 is formed by stamping or punching with from a metal sheet, preferably stainless steel.
  • the shell 24 includes a closed side wall 26 having a substantially rectilinear region 28 which is connects to a substantially semi-circular region 30.
  • the wall 26 is connects to an outer flat edge 32 which has a substantially straight portion 34 connected to region 28 of the wall 26 and a portion 36 of substantially shaped semicircular which connects to region 30 of the wall 26.
  • the rim 32 extends radially outwards at from the wall 26.
  • the wall 26 is connects to an inner flat edge 38 which extends parallel at the outer plane edge 32 and which delimits an opening axial 40 of substantially semi-circular shape.
  • the inner rim 38 extends radially inward from the wall 26.
  • the wall 26 is formed into a skin so as to flare from the rim inner plane 38 towards the outer plane edge 32.
  • the internal flat edge 38 comprises a substantially semi-circular portion 42 extending in the general plane of the rim 38 and connecting to the region 30 of the wall 26.
  • the portion 42 is connected to a recessed region which is also part of the ledge inside and which is closer to the edge plane exterior than is the interior rim plan.
  • This recessed region includes a central portion 44 ( Figures 2 to 4) which extends parallel to the plane of the two ledges 32 and 38 as well as two lateral parts 46 connecting the central part 44 to the portion 42.
  • the shells 24 are intended to be stacked and assembled in pairs alternately by their inner edges 38 and by their outer edges 32. Which allows to delimit a room internal 48 (FIG. 3) extending over the entire height of stacking.
  • the tubes 20 have a cross section of shape substantially rectangular bounded by two long sides and two small sides.
  • the central part 44 of the recessed region has a length substantially equal to a large side, while the two side parts 46 have a length substantially equal to the half of a small side.
  • the central part 44 and the two parts lateral 46 of the same shell 24 delimit an opening lateral which corresponds substantially to the straight half-section of a tube.
  • the beam 18 formed by the tubes 20 and the heatsinks 22 is mounted between the manifolds 10 and 14 formed each by a stack of shells 24.
  • the tubes 20 and the heatsinks 22 are advantageously formed from a alloy of stainless steel and aluminum.
  • the heat exchanger includes two end cheeks 52 and 54 located respectively in the upper part and in the lower part in the position of figure 1.
  • the cheek 52 extends parallel to the tubes 20 and is assembled to the two shells 24 located at the upper end manifolds 10 and 14. This cheek 52 is equipped tubes 12 and 16 itself.
  • the cheek 54 extends parallel to the tubes and is assembled to the two shells 24 situated respectively at the ends opposite manifolds 10 and 14.
  • the cheek 54 thus makes it possible to close the last shell of the stacking of the manifold 10 or of the box collector 14.
  • the portion 34 of the outer rim 32 includes two indexing tabs 56 formed in punctures and two openings 58 of corresponding shape.
  • the two indexing tabs 56 of a shell enter the two openings 58 of the other shell and vice versa, which ensures correct relative positioning of the two shells of the same pair with a view to their assembly subsequent by soldering.
  • the shell 124 is similar to the shell 24 described above. It differs from the latter in that the outer plane edge 132 has a substantially rectangular shape with four rounded corners instead of a shape substantially semi-circular.
  • the rim 132 comprises two indexing lugs 156 formed in punctures in a region 136 of the edge located on the side of the semi-circular region 130 of the side wall 124.
  • This region 136 continues with a folded edge 137 which extends in a plane parallel to the direction of the stack.
  • the flanges 137 define a support surface on which a plate is assembled support 160 comprising a core 162 to which it is connected perpendicularly a wing 164 ( Figures 5 and 6).
  • the shell 124 also differs from the shell 24 by the causes the opening 140 to be crossed radially by a material bridge 141.
  • Figure 6 shows, in section, the constitution of the exchanger heat respectively at the cutting planes VI (A), VI (B) and VI (C) in Figure 5.
  • the ledge exterior 232 has, in its region 234, a tab 259 which occupies less than half a width of the shell.
  • the 256 tabs allow indexing, while both legs 259 can be folded up as shown in figure 9 to ensure prior crimping of the two shells 224.
  • the main difference lies in the fact that the crimping lug 359 extends over a longer narrow width.
  • the indexing tabs 256 serve also crimping lugs, as shown in the figure 11.
  • the indexing lugs 356 are folded back to also serve as crimp tabs.
  • the legs 359 are folded back to ensure the crimping.
  • the invention is not limited to an exchanger heat used to cool an air flow by heat exchange with another air flow and that it can be used to provide heat exchange between other types of fluids.

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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 (10)

  1. Wärmetauscher mit einem Bündel aus Rohren, das zwischen zwei Sammelkästen montiert ist, wobei jeder Sammelkasten (10, 14) einen Stapel von Schalen (24) umfasst, die paarweise aneinandergefügt sind, und wobei jede Schale (24) eine geschlossene seitliche Wandung (26) umfasst, deren eines Ende an einen äußeren, ebenen umgebogenen Rand (32) anschließt, und deren anderes Ende an einen inneren, ebenen umgebogenen Rand (38) anschließt, der sich parallel zu dem äußeren, ebenen umgebogenen Rand erstreckt und der eine axiale Öffnung (40) begrenzt, wobei die seitliche Wandung (26) jeder Schale (24) eine seitliche Öffnung (50) begrenzt, deren Querschnitt an das halbe Querschnittsprofil eines Rohres (20) angepasst ist,
    derart, dass die Schalen (24) paarweise, abwechselnd an ihren inneren umgebogenen Rändern (38) und an ihren äußeren umgebogenen Rändern (32), zusammengesetzt werden können, wobei eine innere Kammer (48) über die gesamte Länge des Stapels begrenzt wird, und dass jedes Ende der Rohre (20) in jeweils zwei der seitlichen Öffnungen (50) zweier aneinandergrenzender Schalen (24) aufgenommen werden kann,
    dadurch gekennzeichnet, dass der äußere, ebene umgebogene Rand (32; 132; 232; 332) jeder Schale Positioniermittel (56; 156; 256; 356) aufweist, die geeignet sind, für den Zusammenbau an ihren jeweiligen äußeren umgebogenen Rändern eine korrekte gegenseitige Positionierung der beiden Schalen eines selben Paares sicherzustellen, und dass der äußere umgebogene Rand wenigstens eine umklappbare, an dem Umfang der beiden Schalen eines Paares angeformte Faltlasche (259, 359) für den Zusammenbau zweier Schalen eines selben Paares aufweist.
  2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, dass die seitliche Öffnung (50) einer Schale (24) durch einen zurückgesetzten Bereich (44, 46) des inneren umgebogenen Randes (38) begrenzt ist, wobei dieser zurückgesetzte Bereich näher an der Ebene des äußeren umgebogenen Randes (32) ist als die Ebene des inneren umgebogenen Randes (38).
  3. Wärmetauscher nach Anspruch 2, dadurch gekennzeichnet, dass jedes der Rohre (20) ein im wesentlichen rechteckiges Querschnittsprofil hat, das durch zwei große Seiten und zwei kleine Seiten begrenzt ist, und dass der zurückgesetzte Bereich des inneren umgebogenen Randes (38) einen zentralen Teil (44) aufweist, der im wesentlichen gleich lang ist wie eine große Seite, und zwei seitliche Teile (46), die im wesentlichen gleich lang sind wie die Hälfte einer kleinen Seite.
  4. Wärmetauscher nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, dass der zurückgesetzte Bereich des inneren umgebogenen Randes (38) an einen im wesentlichen geraden Bereich (28) der seitlichen Wandung (26) anschließt.
  5. Wärmetauscher nach Anspruch 4, dadurch gekennzeichnet, dass die seitliche Wandung (26) darüber hinaus einen im wesentlichen halbkreisförmigen Bereich (30) umfasst, der an den geraden Bereich (28) anschließt.
  6. Wärmetauscher nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die seitliche Wandung (26) eine schräge Form hat, die sich von dem inneren umgebogenen Rand (38) zum äußeren umgebogenen Rand (32) aufweitet.
  7. Wärmetauscher nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Positioniermittel einer Schale zwei umgebogene Laschen (56; 156; 256; 356) aufweisen, von denen jede aus dem äußeren umgebogenen Rand (32; 132; 232; 332) freigestanzt ist und in die entsprechenden Öffnungen einer anderen Schale eingeführt werden kann.
  8. Wärmetauscher nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass er Kühlkörper (22) aufweist, die beiderseits der Rohre (20) des Bündels angeordnet sind.
  9. , Wärmetauscher nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass er ein seitliches Endteil (52) aufweist, das sich parallel zu den Rohren (20) erstreckt und das mit den beiden an einem ersten Ende jedes Sammelkastens (10, 14) angeordneten Schalen verbunden ist, wobei das Endteil (52) mit zwei Anschlussstutzen (12, 16) ausgestattet ist, die dem Zufluss bzw. dem Abfluss eines flüssigen oder gasförmigen Mediums dienen, das die Kästen des Mediums und die Rohre des Bündels durchströmt, während die beiden an einem zweiten Ende jedes Sammelkastens angeordneten Schalen geschlossen sind.
  10. Wärmetauscher nach Anspruch 9, dadurch gekennzeichnet, dass die Schalen (24), die an dem zweiten Ende jedes Sammelkastens (10, 14) angeordnet sind, entweder durch ein gemeinsames Seitenteil (54) geschlossen oder aus speziellen Schalen, mit einem auf der Höhe des inneren umgebogenen Randes (38) durchgehenden Boden, aufgebaut sind.
EP95108599A 1994-06-08 1995-06-06 Wärmetauscher, insbesondere für die Kühlung eines Luftstromes mit hoher Temperatur Expired - Lifetime EP0686823B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9407026A FR2721099B1 (fr) 1994-06-08 1994-06-08 Echangeur de chaleur utile notamment pour le refroidissement d'un flux d'air à haute température.
FR9407026 1994-06-08

Publications (2)

Publication Number Publication Date
EP0686823A1 EP0686823A1 (de) 1995-12-13
EP0686823B1 true EP0686823B1 (de) 2001-07-25

Family

ID=9464012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108599A Expired - Lifetime EP0686823B1 (de) 1994-06-08 1995-06-06 Wärmetauscher, insbesondere für die Kühlung eines Luftstromes mit hoher Temperatur

Country Status (4)

Country Link
US (1) US5634519A (de)
EP (1) EP0686823B1 (de)
DE (1) DE69521843T2 (de)
FR (1) FR2721099B1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943884B1 (de) * 1996-12-05 2003-04-02 Showa Denko Kabushiki Kaisha Wärmetauscher
CA2215173C (en) * 1997-09-11 2004-04-06 Thomas F. Seiler Stepped dimpled mounting brackets for heat exchangers
US6467536B1 (en) * 1999-12-22 2002-10-22 Visteon Global Technologies, Inc. Evaporator and method of making same
FR2834336B1 (fr) * 2001-12-28 2006-12-01 Valeo Thermique Moteur Sa Element de circuit pour echangeur de chaleur, notamment de vehicule automobile et echangeur de chaleur ainsi obtenu
DE10237648A1 (de) * 2002-08-13 2004-02-26 Behr Gmbh & Co. Wärmeübertrager
FR2880671B1 (fr) * 2005-01-12 2007-04-06 Valeo Systemes Thermiques Embout de tube pour element de circuit hydraulique, en particulier pour echangeur de chaleur
SE530574C2 (sv) * 2006-11-20 2008-07-08 Alfa Laval Corp Ab Plattvärmeväxlare
DE102008053308A1 (de) * 2008-10-27 2010-04-29 Behr Industry Gmbh & Co. Kg Wärmetauscher
FR2947045B1 (fr) * 2009-06-23 2013-11-29 Valeo Systemes Thermiques Bloc d'echangeur de chaleur, en particulier pour condenseur de climatisation
JP2022117538A (ja) * 2021-02-01 2022-08-12 パナソニックＩｐマネジメント株式会社 プレートフィン積層型熱交換器およびそれを用いた冷凍システム
FR3135830A1 (fr) * 2022-05-20 2023-11-24 Valeo Systemes Thermiques Dispositif de régulation thermique, notamment de refroidissement pour véhicule automobile.

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FR2479438A1 (fr) 1980-03-26 1981-10-02 Chausson Usines Sa Echangeur pour le refroidissement d'un fluide a haute temperature
IT1179639B (it) * 1984-05-04 1987-09-16 Piemontese Radiatori Radiatore per autoveicoli
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US5046555A (en) * 1990-09-06 1991-09-10 General Motors Corporation Extended surface tube-to-header connection for condenser
JPH0755373B2 (ja) * 1990-09-18 1995-06-14 住友軽金属工業株式会社 アルミニウム合金クラッド材および熱交換器
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JPH04363592A (ja) * 1991-06-07 1992-12-16 Nippondenso Co Ltd 積層型熱交換器
US5176205A (en) * 1991-06-27 1993-01-05 General Motors Corp. Corrosion resistant clad aluminum alloy brazing stock

Also Published As

Publication number Publication date
DE69521843T2 (de) 2002-04-04
FR2721099B1 (fr) 1996-07-19
US5634519A (en) 1997-06-03
FR2721099A1 (fr) 1995-12-15
EP0686823A1 (de) 1995-12-13
DE69521843D1 (de) 2001-08-30

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