DE4421134A1 - Method for the production of a gilled heat exchanger - Google Patents

Method for the production of a gilled heat exchanger

Info

Publication number
DE4421134A1
DE4421134A1 DE19944421134 DE4421134A DE4421134A1 DE 4421134 A1 DE4421134 A1 DE 4421134A1 DE 19944421134 DE19944421134 DE 19944421134 DE 4421134 A DE4421134 A DE 4421134A DE 4421134 A1 DE4421134 A1 DE 4421134A1
Authority
DE
Germany
Prior art keywords
tube
blank
heat exchanger
bent
another
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.)
Withdrawn
Application number
DE19944421134
Other languages
German (de)
Inventor
Klaus Dr Buehler
Klaus Geil
Hans Fischer
Wilhelm Reimers
Rainer Schild
Wilhelm Wingensiefen
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.)
Vaillant GmbH
Original Assignee
Joh Vaillant GmbH and Co
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 Joh Vaillant GmbH and Co filed Critical Joh Vaillant GmbH and Co
Publication of DE4421134A1 publication Critical patent/DE4421134A1/en
Withdrawn legal-status Critical Current

Links

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
    • F28F1/24—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
    • 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0822—Guiding or aligning the edges of the bent sheet
    • 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/087—Making tubes with welded or soldered seams using rods or strips of soldering material
    • 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
    • B21C37/155—Making tubes with non circular section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • B21D53/085—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal with fins places on zig-zag tubes or parallel tubes
    • 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

Landscapes

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

Abstract

Method for the production of a gilled heat exchanger (9) for a fuel-heated heat exchanger with copper tubes (3) of oval cross-section, the tubes (3) being bent from a sheet-metal blank (1) and the lateral edges (2) of the blank (1) being laid flat against one another and soldered together. A simple method of this kind is characterised in that the edges (2) of the blank (1) are bent towards the interior (11) of the tube (3) in a manner known per se and placed against one another by their outer sides, a foil (7) serving as solder being placed on that side of the blank (1) which forms the outside of the tube (3) when the blank (1) is bent, whereupon the gills (10) are mounted on the tube and the gilled tube (3) prefabricated in this way is heated progressively from one end to the other to the soldering temperature. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Verfahren zur Herstellung eines Lamellenwärmetauschers gemäß dem Oberbegriff des Pa­ tentanspruchs.The invention relates to a method of manufacture a finned heat exchanger according to the preamble of Pa entitlement.

Aus der EP-OS 0 000 369 ist ein Verfahren bekannt, bei dem ein Metallrohr durch Biegen aus einem Blechzuschnitt, Einlegen ei­ nes Lotstreifens in die Naht, wendelförmiges Umwickeln mit Draht und Verlöten hergestellt wird. Diese Rohre weisen einen kreisrunden Querschnitt auf, der jedoch im Hinblick auf eine Verwendung in einem Lamellenwärmetauscher nicht optimal ist.From EP-OS 0 000 369 a method is known in which a Metal pipe by bending from a sheet metal blank, inserting egg nes solder strip in the seam, helical wrapping with Wire and soldering is made. These tubes have one circular cross-section, but with regard to a Use in a finned heat exchanger is not optimal.

Bekannt ist weiterhin ein in der CH-PS 341 520 beschriebenes Aluminium- beziehungsweise Leichtmetallrohr für Röhrenwärme­ tauscher, wobei eine Hartlötung vorgesehen ist.Also known is one described in CH-PS 341 520 Aluminum or light metal tube for tube heat exchanger, where a brazing is provided.

Ziel der Erfindung ist es, ein einfaches Verfahren der ein­ gangs erwähnten Art vorzuschlagen, das den Erfordernissen ei­ nes Lamellenwärmetauschers angepaßt ist.The aim of the invention is to provide a simple method of a propose the type mentioned above, which meets the requirements Nes finned heat exchanger is adapted.

Erfindungsgemäß wird dies durch die kennzeichnenden Merkmale des Patentanspruchs erreicht. According to the invention, this is due to the characteristic features of claim reached.  

Auf diese Weise können Rohre mit ovalem Querschnitt sehr ein­ fach hergestellt werden.In this way, tubes with an oval cross section can be very be manufactured.

Zunächst wird eine in das Innere des Rohres hineinragende Rippe gebildet, die den Wärmeübergang vom im Inneren des Roh­ res strömenden Medium zur Außenseite des Rohres verbessert.First, a protruding into the inside of the tube Rib formed that the heat transfer from inside the raw res flowing medium to the outside of the tube improved.

Die Verwendung einer Lötfolie und das nachfolgende Aufschieben der Lamellen ist bei Kupferrohren von Vorteil, da gleichzeitig ein Verlöten des Rohres und der auf dieses aufgeschobenen La­ mellen möglich ist. Dadurch ergibt sich ein sehr rasches Ver­ löten sowohl der aneinander anliegenden Ränder des Zuschnitts als auch der Lamellen und des Rohres.The use of a solder foil and the subsequent postponement the lamella is an advantage for copper pipes because it is simultaneously a soldering of the pipe and the La pushed onto this painting is possible. This results in a very quick ver solder both the abutting edges of the blank as well as the fins and the tube.

Die Erfindung wird nun anhand der Zeichnung näher erläutert.The invention will now be explained in more detail with reference to the drawing.

Dabei zeigen:Show:

Fig. 1 eine Herstellungsphase eines Lamellenwärmetauschers und Fig. 1 shows a manufacturing phase of a finned heat exchanger and

Fig. 2 ein Rohr in Einbaulage in einem Lamellenwärmetauscher. Fig. 2 shows a pipe in the installed position in a finned heat exchanger.

Gleiche Bezugszeichen bedeuten in beiden Figuren gleiche Ein­ zelheiten.The same reference numerals mean the same A in both figures details.

Nach der Fig. 1 ist ein Blechzuschnitt 1 zu einem im Quer­ schnitt ovalen Rohr 3 gebogen, wobei die Ränder 2 gegen das Innere 11 des Rohres 3 abgebogen sind und mit ihren Außensei­ ten aneinander anliegen. Dabei ist eine Folie 7 aus einer als Lot verwendbaren Legierung an der Außenseite des Rohrs 3 auf­ gebracht, so daß die Ränder 2 des Zuschnittes 1 mit ihren mit der Folie 7 belegten Seiten aneinander anliegen. Eine danach aufgesteckte Lamelle 10 ist ebenfalls angedeutet. Durch Erwär­ mung des vorgefertigten Rohres 3 werden sowohl die aneinander anliegenden Ränder 2 des Zuschnittes 1 miteinander verlötet, als auch die Lamellen 10 an das Rohr 3 angelötet.According to FIG. 1, a sheet-metal blank 1 is bent to form a cut in cross oval tube 3, the edges 2 are bent towards the interior 11 of the tube 3 and with its geek th abut each other. In this case, a film 7 made of an alloy that can be used as solder is placed on the outside of the tube 3 , so that the edges 2 of the blank 1 rest against one another with their sides covered with the film 7 . A slat 10 then plugged in is also indicated. By heating the prefabricated tube 3 , both the abutting edges 2 of the blank 1 are soldered to one another, and the fins 10 are soldered to the tube 3 .

Die Fig. 2 zeigt ein Rohr 3 nach der Fig. 1, das in einem La­ mellenwärmetauscher 9 in Gebrauchslage eingebaut ist, wobei der Lamellenwärmetauscher 9 in Richtung des Pfeiles 14 von Ab­ gasen eines Brenners beheizt ist. Durch an den Lamellen 10 an­ geformte Krägen 13, die das Rohr 3 eng umschließen, sind die Lamellen 10 mit dem Rohr 3 verlötet. Fig. 2 shows a tube 3 of FIG. 1, the heat exchanger in a Melle La is installed in the position of use 9, wherein the laminated heat exchanger 9 in the direction of arrow 14 of gases from a burner is heated. Due to the slats 10 on shaped collars 13 which closely surround the pipe 3, the fins 10 are brazed to the tube. 3

Claims (1)

Verfahren zur Herstellung eines Lamellenwär­ metauschers für einen brennstoffbeheizten Wärmeerzeuger mit Kupferrohren ovalen Quer­ schnitts, wobei die Rohre aus einem Blech­ zuschnitt gebogen und die seitlichen Ränder des Zuschnitts flächig aneinander angelegt und miteinander verlötet werden, dadurch ge­ kennzeichnet, daß die Ränder (2) des Zu­ schnitts (1) in an sich bekannter Weise gegen das Innere (11) des Rohres (3) abgebogen und mit ihren Außenseiten aneinander angelegt werden, wobei eine als Lot dienende Folie (7) an jener Seite des Zuschnitts (1) aufgelegt wird, die beim Biegen des Zuschnitts (1) die Außenseite des Rohres (3) bildet, daß danach die Lamellen (10) aufgesteckt werden und das so vorgefertigte Lamellenrohr (3) von einem Ende zum anderen fortschreitend auf Löttempe­ ratur erwärmt wird.Process for producing a lamella heat exchanger for a fuel-heated heat generator with copper tubes oval cross-section, the tubes being bent from a sheet metal blank and the side edges of the blank being laid flat against one another and soldered to one another, characterized in that the edges ( 2 ) of the tube cut ( 1 ) in a known manner against the inside ( 11 ) of the tube ( 3 ) and bent with their outer sides against each other, a serving as a solder foil ( 7 ) is placed on that side of the blank ( 1 ) during bending of the blank (1) the outside of the tube (3), that thereafter the blades (10) are plugged, and the thus prefabricated fin tube (3) is heated from one end to the other progressively to Löttempe temperature.
DE19944421134 1993-06-16 1994-06-16 Method for the production of a gilled heat exchanger Withdrawn DE4421134A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT117593A ATA117593A (en) 1993-06-16 1993-06-16 METHOD FOR PRODUCING TUBES

Publications (1)

Publication Number Publication Date
DE4421134A1 true DE4421134A1 (en) 1994-12-22

Family

ID=3508238

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19944421134 Withdrawn DE4421134A1 (en) 1993-06-16 1994-06-16 Method for the production of a gilled heat exchanger

Country Status (2)

Country Link
AT (1) ATA117593A (en)
DE (1) DE4421134A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2563569A (en) * 2017-05-11 2018-12-26 Univ Coventry A method of manufacturing a hollow shelled component and a component

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2563569A (en) * 2017-05-11 2018-12-26 Univ Coventry A method of manufacturing a hollow shelled component and a component

Also Published As

Publication number Publication date
ATA117593A (en) 1998-06-15

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