EP0776454B1 - Flachrohr für einen wärmetauscher - Google Patents

Flachrohr für einen wärmetauscher Download PDF

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Publication number
EP0776454B1
EP0776454B1 EP96922944A EP96922944A EP0776454B1 EP 0776454 B1 EP0776454 B1 EP 0776454B1 EP 96922944 A EP96922944 A EP 96922944A EP 96922944 A EP96922944 A EP 96922944A EP 0776454 B1 EP0776454 B1 EP 0776454B1
Authority
EP
European Patent Office
Prior art keywords
flat
central segment
free edges
piece
flat tube
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
EP96922944A
Other languages
English (en)
French (fr)
Other versions
EP0776454A1 (de
Inventor
Frédéric Letrange
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
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 Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0776454A1 publication Critical patent/EP0776454A1/de
Application granted granted Critical
Publication of EP0776454B1 publication Critical patent/EP0776454B1/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
    • 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
    • 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
    • F28D1/0308—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 the conduits being formed by paired plates touching each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/151—Making tubes with multiple passages
    • 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
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/906—Reinforcement
    • 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
    • Y10T29/49391—Tube making or reforming

Definitions

  • the invention relates to a flat tube for a heat exchanger. heat, in particular from a heating and / or heating installation motor vehicle air conditioning or for an installation motor vehicle cooling.
  • It relates more particularly to a flat tube of the type comprising two opposite flat sides interconnected by two rounded sides and by two internal partitions longitudinal to define circulation channels in the tube.
  • Such flat tubes also called “multichannel tubes” are arranged in parallel to form a beam, which also includes corrugated dividers, forming fins, arranged between the tubes.
  • These tubes are intended to be traversed by a fluid coolant which can be water or a refrigerant.
  • these multichannel tubes can be used to form a condenser of an air conditioning system and then be crossed by a refrigerant. This last may be at high pressure.
  • the internal partitions of the tubes serve in such a case to stiffen the tube and prevent its deformation under the effect high refrigerant pressure.
  • the partitions allow define traffic channels that can be crossed by different fluids, possibly against the current.
  • this known tube has the disadvantage that it does not allow to realize that flat tubes having a single partition internal and thus delimiting only two channels of circulation.
  • the object of the invention is in particular to overcome the drawbacks cited above.
  • the tube is thus obtained by assembling and brazing two complementary parts which closely fit together in the other, the main room sandwiching the secondary room.
  • the two parts When the two parts are assembled and brazed, they constitute a single tube which includes two partitions internal and therefore three circulation channels, which extend parallel to each other.
  • each free edges of the main room is folded at an angle right relative to the corresponding side segment and stops at a distance from the first flat side, leaving a given value interval.
  • each of the free edges of the secondary part is folded at right angles to the central segment and ends with a rim which is substantially parallel to the central segment and which is suitable for entering a corresponding interval of the main room, which allows a close nesting of the two parts between them.
  • the value of the interval is substantially equal to the thickness of the metal strip from which the secondary part, which allows a tight assembly.
  • the metal strip of the main room has a solder plating on one of its faces, or outer face, which allows, on the one hand, to form a solder joint with the secondary part and, on the other hand, to form a weld bead with the fins of the exchanger.
  • the strip metal of the secondary part is provided with a plating of solder on both sides, which allows, on the one hand, to obtain a weld bead with the main part and, on the other hand, to ensure a weld bead with the heat exchanger fins.
  • the flat tube shown in cross section in the figure 1 is formed by the assembly and brazing of two parts complementary, namely a main room 12 and a secondary room 14.
  • Main part 12 is formed from a strip metallic, for example aluminum or aluminum alloy, folded by several successive rolling operations.
  • the part 12 includes a first flat side 16 framed by two rounded sides 18, of semi-circular shape, which are connected respectively with two lateral segments 20 of configuration plane.
  • the two lateral segments 20 are parallel to the flat side 16 and each have a width which corresponds substantially to the third of the width of the flat side 16.
  • Each side segment 20 leads to a free edge 22 folded at right angles to direction of the interior of the flat side 16.
  • the two edges free 22 are parallel to each other and spaced apart by a distance d which is substantially equal to a third of the width of the side flat 16.
  • Each of the free edges 22 stops at a distance from the flat side 16 with an interval i of given value which is substantially equal to the thickness of the metal strip of which the secondary part 14 is formed. This thickness is in practice the same as that of the metal strip whose the main part 12 is formed.
  • the secondary part 14 is formed from a strip folded metal, e.g. aluminum or alloy aluminum, obtained by several rolling operations successive.
  • the part 14 comprises a central segment 24 of planar configuration whose width is substantially equal to the aforementioned distance d.
  • This central segment 24 leads to two free edges 26 folded at right angles, so that they extend parallel between them.
  • Each of the free edges 26 continues with a rim 28 which is perpendicular to edge 26 and therefore parallel to segment 24.
  • the two flanges 28 are coplanar and extend in opposite directions.
  • the secondary part 14 can be nested sandwiched in main room 12 in position shown in Figure 1.
  • each of the edges 26 of the part 14 comes pressing against a corresponding edge 22 of the part 12, while each of the flanges 28 comes to be embedded in a interval i of the part 12.
  • the nesting of the two parts can be done in a longitudinal direction, or by slight deformation of at least one of the two parts.
  • each edge 22 forms with the edge 26 and the rim 16 corresponding to an internal partition, so that the tube is divided into three channels 30 which extend in parallel between them.
  • the central segment 14 and the two lateral segments 20 are coplanar and thus form a second flat side 32 of the flat tube, which extends parallel to the first flat side 16.
  • the metal strip from which the main part 12 is formed has a solder plating on its outer face FE to allow the formation of a solder joint with the secondary part 14. This also makes it possible to obtain a weld bead for connecting the tube with fins 34, as shown in Figure 2.
  • the metal strip from which the part is formed secondary 14 is provided with a solder plating on its face external FE and on its internal face FI. This allows to obtain a weld bead of the two flanges 28 with inside the flat side 16.
  • the presence of the flanges 28 is optional. However, this presence is preferable for facilitate temporary maintenance of the two parts to the soldering operation.
  • the flat tube according to the invention is intended for making heat exchangers, in particular for heating installations heating and / or air conditioning of motor vehicles.

Landscapes

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

Claims (7)

  1. Flachrohr für einen Wärmetauscher, das zwei gegenüberliegende flache Seiten umfaßt, die miteinander durch zwei abgerundete Seiten und durch zwei innere Längstrennwände verbunden sind, um Umlaufkanäle im Rohr zu bilden,
    dadurch gekennzeichnet, daß das Rohr durch die Zusammenfügung und Verlötung von zwei formschlüssigen Teilen gebildet wird, umfassend:
    einen Hauptteil (12), der aus einem gebogenen Metallband ausgeführt ist und eine erste flache Seite (16), die zwei abgerundeten Seiten (18) und zwei Seitenabschnitte (20) bildet, die sich jeweils an eine der beiden abgerundeten Seiten (18) anschließen, um teilweise die zweite flache Seite (32) zu bilden, wobei die beiden Seitenabschnitte (20) jeweils zu einer von zwei freien Kanten (22) führen, die zueinander beabstandet und in Richtung der ersten flachen Seite (16) umgebogen sind; und
    einen Sekundärteil (14), der aus einem Metallband ausgeführt ist und einen Mittelabschnitt (24) bildet, der teilweise die zweite flache Seite (32) bilden kann, wobei der Mittelabschnitt zu zwei freien Kanten (26) führt, die auf einer gleichen Seite des besagten Mittelabschnitts umgebogen sind, so daß die freien Kanten (26) des Mittelabschnitts an die freien Kanten (22) der Seitenabschnitte (32) angedrückt werden können, um den Sekundärteil (14) sandwichartig im Hauptteil (12) zu halten, und daß der Hauptabschnitt (24) und die beiden Seitenabschnitte (32) zusammen die zweite flache Seite (32) des Rohrs bilden.
  2. Flachrohr nach Anspruch 1 , dadurch gekennzeichnet, daß jede der freien Kanten (22) des Hauptteils (12) rechtwinklig im Verhältnis zu dem entsprechenden Seitenabschnitt (20) umgebogen ist und in einem Abstand von der ersten flachen Seite (16) endet, wobei ein Zwischenraum (i) mit einem gegebenen Wert vorgesehen ist.
  3. Flachrohr nach Anspruch 2 , dadurch gekennzeichnet, daß jede der freien Kanten (26) des Sekundärteils (14) rechtwinklig im Verhältnis zum Mittelabschnitt (24) umgebogen ist und in einem Randstück (28) endet, das in etwa parallel zum Mittelabschnitt (24) verläuft und das in einen Zwischenraum (i) des Hauptteils (12) eingesetzt werden kann.
  4. Flachrohr nach einem der Ansprüche 2 und 3 , dadurch gekennzeichnet, daß der Wert des Zwischenraums (i) in etwa gleich der Dicke des Metallbands ist, aus dem der Sekundärteil (14) besteht.
  5. Flachrohr nach einem der Ansprüche 1 bis 4 , dadurch gekennzeichnet, daß der Hauptteil (12) und der Sekundärteil (14) durch aufeinanderfolgende Rollbiegevorgänge hergestellt werden.
  6. Flachrohr nach einem der Ansprüche 1 bis 5 , dadurch gekennzeichnet, daß das Metallband, aus dem der Hauptteil (12) besteht, mit einer Lötplattierung auf einer ihrer Flächen (FE) versehen ist, die sich nach außen erstreckt.
  7. Flachrohr nach einem der Ansprüche 1 bis 6 , dadurch gekennzeichnet, daß das Metallband, aus dem der Sekundärteil (14) besteht, mit einer Lötplattierung auf seinen beiden Flächen (FE, FI) versehen ist.
EP96922944A 1995-06-22 1996-06-18 Flachrohr für einen wärmetauscher Expired - Lifetime EP0776454B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9507513A FR2735853B1 (fr) 1995-06-22 1995-06-22 Tube plat pour echangeur de chaleur
FR9507513 1995-06-22
PCT/FR1996/000939 WO1997001071A1 (fr) 1995-06-22 1996-06-18 Tube plat pour echangeur de chaleur

Publications (2)

Publication Number Publication Date
EP0776454A1 EP0776454A1 (de) 1997-06-04
EP0776454B1 true EP0776454B1 (de) 1998-05-20

Family

ID=9480295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96922944A Expired - Lifetime EP0776454B1 (de) 1995-06-22 1996-06-18 Flachrohr für einen wärmetauscher

Country Status (7)

Country Link
US (1) US5704423A (de)
EP (1) EP0776454B1 (de)
KR (1) KR970705731A (de)
DE (1) DE69600309T2 (de)
ES (1) ES2117900T3 (de)
FR (1) FR2735853B1 (de)
WO (1) WO1997001071A1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3829242B2 (ja) * 1996-02-28 2006-10-04 敬 高橋 扁平配管
US5956846A (en) * 1997-03-21 1999-09-28 Livernois Research & Development Co. Method and apparatus for controlled atmosphere brazing of unwelded tubes
FR2769358B1 (fr) * 1997-10-02 2000-01-28 Valeo Thermique Moteur Sa Tube plat a plusieurs canaux pour echangeur de chaleur
FR2772901B1 (fr) * 1997-12-23 2000-03-03 Valeo Thermique Moteur Sa Tube plie et brase pour echangeur de chaleur, et echangeur de chaleur comportant de tels tubes
GB0101697D0 (en) * 2001-01-23 2001-03-07 Emerson & Renwick Ltd Heat exchanger tube
US6530514B2 (en) 2001-06-28 2003-03-11 Outokumpu Oyj Method of manufacturing heat transfer tubes
US6467535B1 (en) * 2001-08-29 2002-10-22 Visteon Global Technologies, Inc. Extruded microchannel heat exchanger
US20080279222A1 (en) * 2001-10-18 2008-11-13 Level 3 Communications Llc Distribution of traffic across a computer network
DE10201512A1 (de) * 2002-01-17 2003-07-31 Behr Gmbh & Co Mehrkammerflachrohr
US7032808B2 (en) * 2003-10-06 2006-04-25 Outokumu Oyj Thermal spray application of brazing material for manufacture of heat transfer devices
US20080047141A1 (en) * 2006-08-08 2008-02-28 Inventec Corporation Method for fabricating supporting column of heat sink
US20080302518A1 (en) * 2007-06-07 2008-12-11 Joseph Durdel Flat tube heat exchanger
DE102007039292A1 (de) * 2007-08-20 2009-02-26 Behr Gmbh & Co. Kg Mehrkammer-Flachrohr, Wärmetauscher und Verwendung eines Wärmetauschers
FR2956949B1 (fr) 2010-03-04 2013-04-19 Pelle Equipements Dispositif de cuisson de produits alimentaires a base de pate et filet de cuisson.
EP2584301B1 (de) 2011-10-19 2014-08-13 WS-Wärmeprozesstechnik GmbH Hochtemperatur-Wärmeübertrager
US9015923B2 (en) 2012-08-09 2015-04-28 Modine Manufacturing Company Heat exchanger tube, heat exchanger tube assembly, and methods of making the same
US9302337B2 (en) * 2012-08-09 2016-04-05 Modine Manufacturing Company Heat exchanger tube, heat exchanger tube assembly, and methods of making the same
KR102139270B1 (ko) * 2012-09-14 2020-07-29 리벤트 인터내셔날 아베 열풍 오븐

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE805785C (de) * 1949-12-30 1951-05-31 Friedrich Karl Rosenbaum Geschweisster Plattenheizkoerper
FR1573193A (de) * 1968-04-17 1969-07-04
CH626160A5 (de) * 1977-10-14 1981-10-30 Bogatzki Hans Ulrich
US4805693A (en) * 1986-11-20 1989-02-21 Modine Manufacturing Multiple piece tube assembly for use in heat exchangers
DE3725602A1 (de) * 1987-08-01 1989-02-09 Sueddeutsche Kuehler Behr Flachrohr fuer einen waermetauscher
US5186251A (en) * 1992-06-01 1993-02-16 General Motors Corporation Roll formed heat exchanger tubing with double row flow passes
GB2268260A (en) * 1992-06-24 1994-01-05 Llanelli Radiators Ltd Heat exchange tubes formed from a unitary portion of sheet or strip material
US5441105A (en) * 1993-11-18 1995-08-15 Wynn's Climate Systems, Inc. Folded parallel flow condenser tube
US5511613A (en) * 1994-12-12 1996-04-30 Hudson Products Corporation Elongated heat exchanger tubes having internal stiffening structure

Also Published As

Publication number Publication date
ES2117900T3 (es) 1998-08-16
DE69600309T2 (de) 1998-09-10
US5704423A (en) 1998-01-06
FR2735853A1 (fr) 1996-12-27
EP0776454A1 (de) 1997-06-04
FR2735853B1 (fr) 1997-08-01
WO1997001071A1 (fr) 1997-01-09
KR970705731A (ko) 1997-10-09
DE69600309D1 (de) 1998-06-25

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