EP0162271B1 - Method for the manufacture of a flat radiator - Google Patents

Method for the manufacture of a flat radiator Download PDF

Info

Publication number
EP0162271B1
EP0162271B1 EP85104469A EP85104469A EP0162271B1 EP 0162271 B1 EP0162271 B1 EP 0162271B1 EP 85104469 A EP85104469 A EP 85104469A EP 85104469 A EP85104469 A EP 85104469A EP 0162271 B1 EP0162271 B1 EP 0162271B1
Authority
EP
European Patent Office
Prior art keywords
return
flow
sheetmetal
welded
rear wall
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
Application number
EP85104469A
Other languages
German (de)
French (fr)
Other versions
EP0162271A2 (en
EP0162271A3 (en
Inventor
Harald Klostermann
Helmut Leggemann
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.)
Baufa-Werke Richard Rinker GmbH
Original Assignee
Baufa-Werke Richard Rinker GmbH
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 Baufa-Werke Richard Rinker GmbH filed Critical Baufa-Werke Richard Rinker GmbH
Priority to AT85104469T priority Critical patent/ATE35736T1/en
Publication of EP0162271A2 publication Critical patent/EP0162271A2/en
Publication of EP0162271A3 publication Critical patent/EP0162271A3/en
Application granted granted Critical
Publication of EP0162271B1 publication Critical patent/EP0162271B1/en
Expired legal-status Critical Current

Links

Images

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
    • 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
    • F28D1/0325—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 the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • 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
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0035—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for domestic or space heating, e.g. heating radiators

Definitions

  • the invention relates to a method for producing a flat radiator with a front wall and a rear wall, between which a flow, a return and channels separated by beads, arranged parallel to one another between flow and return, are formed, and with connections to flow and return in the front wall and / or the rear wall, the front wall and the rear wall being formed from the same sheet metal which is welded to two mirror-symmetrically shaped and folded sheet metal parts.
  • connection-free end faces are each closed with a blind cap, the outline of which is equal to the cross section of the forward and return flow, which is mirror image of one another.
  • the insertion and welding of the blind caps is problematic. A machine for this work had an error rate that was too high; therefore it is inserted and welded in by hand. The effort involved is considerable and the quality of the weld is random and different.
  • the closing of the ends of the flow and return is the last step due to the manufacturing process: a copper core is inserted in the flow and return for attaching the connections to the front wall and / or the rear wall of the flat radiator, in order to attach the connections using the pressure welding process to be able to.
  • the copper core must be removed again; this is only possible through the front opening.
  • a welding aid in the form of an insert in the flow and in the return leads to a reduction in the cross section in the flow and in the return, thus clogging the openings, which gives rise to complaints.
  • the welding aids are associated with additional material costs.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, achieves the object of providing an improved method for producing a flat radiator which has been structurally modified in the region of the front ends of the flow and return, but is otherwise designed as described above, that is to say in particular with a rounded top create.
  • the flat radiator produced by the method according to the invention has all the advantages of the known flat radiator of the type mentioned at the outset.
  • the blind caps are replaced by a round, parallel, compressed edge area, which is closed by bending one sheet metal part in the direction of the other sheet metal part.
  • the welding paths are shorter.
  • the flat radiator also offers a clean view in the area of the front edges of the flow and return.
  • the sheet metal parts at the ends of the flow and the return are expediently welded to one another by a round seam. This avoids sharp edges. It is furthermore advantageous to weld the ends of the sheet metal parts bent towards one another in the area of the forward and the return and the high edges of the sheet metal parts running between the ends in one operation as vertical down weld in a protective gas welding process. This further simplifies the manufacturing process.
  • the heating medium is guided, e.g. Hot water, in vertical channels 1, all of which on the one hand merge into a flow 2, on the other hand into a return 3.
  • the individual channels 1 are separated from one another by beads 4.
  • Connections 5 for the supply and discharge of the heating medium are connected to flow 2 and return 3.
  • the channels 1 are formed by two profiled sheet metal parts 7, 8.
  • the two sheet metal parts 7, 8 are welded to one another on the beads 4, in a spot welding process, as is indicated for a bead in FIG. 1.
  • the shape of a symmetrical hexagon is thus created for each channel 1 in cross section.
  • the flow 2 and the return 3 are also formed by the sheet metal parts 7, 8, but in different ways.
  • the lead 2 is formed as follows:
  • the profiled sheet metal parts 7, 8 are components of a mirror-symmetrically constructed sheet. The axis of symmetry runs in the middle of the top of the flow 2. The sheet is folded to produce the flat radiator. After folding - and welding in a manner to be described later - the profiled sheet metal parts 7, 8 is the Preliminary run 2 available.
  • the return 3 is formed as follows: In the extension of the beads 4, webs 9 are formed on the profiled sheet metal parts 7, 8 beyond the return 3. These webs 9 lie against each other. After the webs 9 have been welded together, the return 3 is formed.
  • connections 5 for the supply and discharge of the heating medium are welded in the area of flow 2 and return 3 on the side of the flat radiator facing the other row.
  • Each sheet metal part 7 or 8 is bent at the ends 21, 31 of the flow 2 and the return 3 in the direction of the other sheet metal part 8 or 7.
  • the bent sheet metal parts are welded by a circular seam 10.
  • the welding of the circular seam 10 takes place simultaneously with the welding of a vertical seam 11 between the circular seams 10 in the area of the forward flow 2 and the return flow 3 on the same end face of the flat radiator.
  • the circular seam 10 and the vertical seam 11 are in the same operation as vertical down in a protective gas welding process, for. B. welded with C0 2 as a protective gas.
  • the back 12 of the lead 2 is provided at the ends with a triangular recess shown in broken lines at the ends before bending and welding. This avoids the overlapping of the sheet metal parts in the area of the circular seam 10; rather guarantees the clean execution of the connection of the sheet metal parts 7, 8 also in the area of the front sides of the forward 2 and return 3.
  • a two-row flat radiator is selected as the exemplary embodiment.
  • the two rows of the flat radiator have the same structure.
  • a single-row or multi-row flat radiator can also be formed, the rows of which have the same structure.
  • the flat radiator is produced as follows:
  • the profiled sheet metal parts 7, 8 are formed from a sheet in a mirror-symmetrical manner: the beads 4 and the halves of the feed 2 and return 3 are embossed.
  • the plate is provided with holes for the connections 5 and cut to length.
  • the part of the sheet which later forms the back 12 of the lead 2 is provided with a triangular cutout at its ends.
  • the sheet metal parts 7, 8 are folded one above the other to form a front wall and a rear wall to form the flow 2, the return 3 and the channels 1 with the beads 4 and the web 9 delimiting the return 3 at the lower edge.
  • the beads 4 are welded together in a spot welding process.
  • a longitudinal seam is welded along the webs 9. In a pressure welding process, the connections 5 are welded in the area of the holes.
  • the flow 2 and the return 3 are closed at their ends by bending one sheet metal part 7 or 8 in the direction of the other sheet metal part 8 or 7.
  • the raised seam 11 is welded along the half beads delimiting the flat radiator on the end faces; at the same time the circumferential welds 10 3. in the region of the towards each other bent, semi-circular and hollow end faces of lead 2 and return the welding of the seams is effected in one operation as a case seam in the shielding gas welding process, for example with C0 2 as a protective gas. Rounded weld seams are created in the areas mentioned.

Landscapes

  • 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)
  • Central Heating Systems (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

1. A method of production of a flat heater unit having a front wall and a rear wall between which are formed a flow (2) and a return (3) as well as channels (1) arranged in parallel with one another between the flow (2) and the return (3) and separated from one another by stiffening corrugations (4), and having connections (5) to the flow (2) and the return (3) in the front wall and/or the rear wall, the front wall and the rear wall being formed from the same metal sheet welded into two sheetmetal parts stamped with mirror symmetry and folded, characterized in that a metal sheet is corrugated, stamped and cut to length into the sheetmetal parts (7 ; 8) formed with mirror symmetry and furthermore holes are cut in it, that the sheetmetal parts (7 ; 8) are folded into the front wall and the rear wall to lie against one another and so form the flow (2), the return (3) and the channels (1) by the stiffening corrugations (4) and a flange (9) bounding the return (3) on the outside, that the connections (5) are welded round the holes, that the flow (2) and the return (3) are closed off at their ends by in each case bending the one sheetmetal part (7 ; 8) in the direction of the other sheetmetal part (8 ; 7) and that in the case of the flow (2) the sheetmetal parts (7 ; 8) bent together and in the case of the return (3) the flanges (9) and furthermore the stiffening corrugations (4) are all respectively welded.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Herstellung eines Flachheizkörpers mit einer Vorderwand und einer Rückwand, zwischen denen ein Vorlauf, ein Rücklauf sowie durch Sicken voneinander getrennte, parallel zueinander zwischen Vorlauf und Rücklauf angeordnete Kanäle gebildet sind, und mit Anschlüssen an Vorlauf und Rücklauf in der Vorderwand und/oder der Rückwand, wobei die Vorderwand und die Rückwand aus demselben zu zwei spiegelsymmetrisch geprägten und gefalteten Blechteilen verschweißten Blech gebildet sind.The invention relates to a method for producing a flat radiator with a front wall and a rear wall, between which a flow, a return and channels separated by beads, arranged parallel to one another between flow and return, are formed, and with connections to flow and return in the front wall and / or the rear wall, the front wall and the rear wall being formed from the same sheet metal which is welded to two mirror-symmetrically shaped and folded sheet metal parts.

Flachheizkörper der vorgenannten Art sind bekannt (vgl. DE-C-709 736). Sie weisen keine ausgeprägte Oberkante, vielmehr eine runde glatte Oberseite ohne Schweißnaht auf. Sie entsprechen den Sicherheitsvorschriften der Bundesarbeitsgemeinschaft der Versicherungsträger der öffentlichen Hand e.V. und sind für Schulen, Sportstätten, Kindergärten, Heime usw. besonders geeignet.Flat radiators of the aforementioned type are known (cf. DE-C-709 736). They do not have a pronounced upper edge, but rather a round, smooth upper surface without a weld seam. They comply with the safety regulations of the Federal Working Group of Public Insurance Institutions and are particularly suitable for schools, sports facilities, kindergartens, homes, etc.

Bei den bekannten Flachheizkörpern der vorgenannten Art sind die anschlußfreien Stirnseiten mit je einer Blindkappe verschlossen, deren Umriß gleich dem - einander spiegelbildlich gleichen - Querschnitt von Vor- und Rücklauf ist. Das Einbringen und Einschweißen der Blindkappen ist problematisch. Ein Automat für diese Arbeit hatte eine zu hohe Fehlerquote; daher erfolgt das Einbringen und Einschweißen von Hand. Der damit verbundene Aufwand ist erheblich und die Qualität der Schweißung zufällig und unterschiedlich. Andererseits ist das Verschließen der Stirnseiten von Vor- und Rücklauf als letzter Arbeitsgang herstellungsbedingt: Für das Anbringen der Anschlüsse an die Vorderwand und/ oder die Rückwand des Flachheizkörpers wird ein Kupferkern in den Vorlauf und den Rücklauf eingebracht, um die Anschlüsse im Preßschweiß-Verfahren anbringen zu können. Der Kupferkern muß wieder entfernt werden; das geht nur über die stirnseitige Öffnung. Die Verwendung einer Schweißhilfe in Form eines Einsatzes im Vorlauf und im Rücklauf führt zu einer Verminderung des Querschnitts im Vorlauf und im Rücklauf, damit zu Verstopfungen der Öffnungen, was zu Reklamationen Anlaß gibt. Im übrigen sind die Schweißhilfen mit zusätzlichen Materialkosten verbunden. Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, löst die Aufgabe, ein verbessertes Verfahren zur Herstellung eines - im Bereich der Stirnseiten von Vorlauf und Rücklauf konstruktiv geänderten, im übrigen aber wie vorstehend beschrieben ausgebildeten, also insbesondere mit abgerundeter Oberseite versehenen - Flachheizkörpers zu schaffen.In the known flat radiators of the aforementioned type, the connection-free end faces are each closed with a blind cap, the outline of which is equal to the cross section of the forward and return flow, which is mirror image of one another. The insertion and welding of the blind caps is problematic. A machine for this work had an error rate that was too high; therefore it is inserted and welded in by hand. The effort involved is considerable and the quality of the weld is random and different. On the other hand, the closing of the ends of the flow and return is the last step due to the manufacturing process: a copper core is inserted in the flow and return for attaching the connections to the front wall and / or the rear wall of the flat radiator, in order to attach the connections using the pressure welding process to be able to. The copper core must be removed again; this is only possible through the front opening. The use of a welding aid in the form of an insert in the flow and in the return leads to a reduction in the cross section in the flow and in the return, thus clogging the openings, which gives rise to complaints. In addition, the welding aids are associated with additional material costs. The invention seeks to remedy this. The invention, as characterized in the claims, achieves the object of providing an improved method for producing a flat radiator which has been structurally modified in the region of the front ends of the flow and return, but is otherwise designed as described above, that is to say in particular with a rounded top create.

Der mit dem Verfahren nach der Erfindung hergestellte Flachheizkörper weist alle Vorteile des bekannten Flachheizkörpers der eingangs genannten Art auf. Durch die Vermeidung der Blindkappen sind die Schwierigkeiten, die durch ihr Einsetzen entstehen, vermieden. An die Stelle der Blindkappen tritt ein rundgebogener, parallel zusammengedrückter Kantenbereich, der durch Biegen jeweils des einen Blechteils in Richtung des anderen Blechteils verschlossen wird. Verglichen mit der Herstellung des bekannten Flachheizkörpers ist der Aufwand wesentlich vermindert. Die Schweißwege sind kürzer. Der Flachheizkörper bietet auch im Bereich der Stirnkanten von Vorlauf und Rücklauf einen sauberen Anblick.The flat radiator produced by the method according to the invention has all the advantages of the known flat radiator of the type mentioned at the outset. By avoiding the blind caps, the difficulties caused by their insertion are avoided. The blind caps are replaced by a round, parallel, compressed edge area, which is closed by bending one sheet metal part in the direction of the other sheet metal part. Compared to the production of the known flat radiator, the effort is significantly reduced. The welding paths are shorter. The flat radiator also offers a clean view in the area of the front edges of the flow and return.

Mehrere der vorgenannten Flachheizkörper können parallel zueinander angeordnet und zu Mehrreihen-Flachheizkörpern verbunden sein.Several of the aforementioned flat radiators can be arranged parallel to one another and connected to form multiple-row flat radiators.

Zur Erleichterung des Biegens und zur Erzielung eines sauberen Aneinanderfügens ist es vorteilhaft, dem Rücken des Vorlaufs an den Enden vor dem Biegen mit einem Ausschnitt zu versehen.In order to facilitate bending and to achieve a clean joining, it is advantageous to provide the back of the lead with a cutout at the ends before bending.

Die Blechteile an den Enden des Vorlaufs und des Rücklaufs werden zweckmäßig durch eine Rundnaht miteinander verschweißt. Dadurch werden scharfe Kanten vermieden. Es ist weiterhin vorteilhaft, die Enden der zueinander gebogenen Blechteile im Bereich des Vorlaufs und des Rücklaufs und die zwischen den Enden verlaufenden Hochkanten der Blechteile in einem Arbeitsgang als Fallnaht in einem Schutzgas-Schweißverfahren zu verschweißen. Dies vereinfacht das Herstellungsverfahren zusätzlich.The sheet metal parts at the ends of the flow and the return are expediently welded to one another by a round seam. This avoids sharp edges. It is furthermore advantageous to weld the ends of the sheet metal parts bent towards one another in the area of the forward and the return and the high edges of the sheet metal parts running between the ends in one operation as vertical down weld in a protective gas welding process. This further simplifies the manufacturing process.

Im folgenden wird die Erfindung anhand von lediglich einen Ausführungsweg darstellenden Zeich- nungen erläutert. Es zeigen:

  • Fig. 1 in verkleinertem Maßstab die Ansicht eines zweireihigen Flachheizkörpers mit teilweise weggebrochener vorderer Reihe;
  • Fig. 2 den Flachheizkörper teilweise in Stirnansicht, teilweise im Längsschnitt entlang der Schnittlinie 11-11 in Fig. 1;
  • Fig. 3 den Flachheizkörper teilweise in Draufsicht, teilweise im Horizontalschnitt entlang der Schnittlinie 111-111 in Fig. 1;
  • Fig. 4 als Einzelheit den Bereich einer Stirnseite des Vorlaufs des Flachheizkörpers
    • a) in der Ansicht;
    • b) in der Stirnansicht und
    • c) im Horizontalschnitt.
In the following the invention is described only one embodiment illustrative drawings now explained g s. Show it:
  • Figure 1 on a smaller scale the view of a two-row flat radiator with the front row partially broken away.
  • Figure 2 shows the flat radiator partly in front view, partly in longitudinal section along the section line 11-11 in Fig. 1.
  • 3 shows the flat radiator partly in plan view, partly in horizontal section along the section line 111-111 in FIG. 1;
  • Fig. 4 as a detail the area of an end face of the flow of the flat radiator
    • a) in the view;
    • b) in the front view and
    • c) in horizontal section.

Bei einem Flachheizkörper erfolgt die Führung des Heizmediums, z.B. Warmwasser, in vertikal verlaufenden Kanälen 1, die alle einerseits in einen Vorlauf 2, andererseits in einen Rücklauf 3 übergehen. Die einzelnen Kanäle 1 sind durch Sicken 4 voneinander getrennt. Mit Vorlauf 2 und Rücklauf 3 sind Anschlüsse 5 für die Zu- und Abfuhr des Heizmediums verbunden.In the case of a flat radiator, the heating medium is guided, e.g. Hot water, in vertical channels 1, all of which on the one hand merge into a flow 2, on the other hand into a return 3. The individual channels 1 are separated from one another by beads 4. Connections 5 for the supply and discharge of the heating medium are connected to flow 2 and return 3.

Die Kanäle 1 sind von zwei profilierten Blechteilen 7, 8 gebildet. An den Sicken 4 sind die beiden Blechteile 7, 8 miteinander verschweißt, und zwar in einem Punkt-Schweißverfahren, wie es für eine Sicke in Fig. 1 angedeutet ist. Für jeden Kanal 1 entsteht so im Querschnitt die Form eines symmetrischen Sechsecks.The channels 1 are formed by two profiled sheet metal parts 7, 8. The two sheet metal parts 7, 8 are welded to one another on the beads 4, in a spot welding process, as is indicated for a bead in FIG. 1. The shape of a symmetrical hexagon is thus created for each channel 1 in cross section.

Auch der Vorlauf 2 und der Rücklauf 3 sind von den Blechteilen 7, 8 gebildet, jedoch auf unterschiedliche Weise. Der Vorlauf 2 ist wie folgt gebildet: Die profilierten Blechteile 7, 8 sind Bestandteile eines spiegelsymmetrisch aufgebauten Blechs. Die Symmetrieachse verläuft in der Mitte der Oberseite des Vorlaufs 2. Für die Herstellung des Flachheizkörpers wird das Blech gefaltet. Nach dem Falten - und in noch zu beschreibender Weise dem Verschweißen - der profilierten Blechteile 7, 8 ist der Vorlauf 2 vorhanden. Der Rücklauf 3 ist wie folgt gebildet: In der Verlängerung der Sicken 4 sind über den Rücklauf 3 hinaus Stege 9 an die profilierten Blechteile 7, 8 angeformt. Diese Stege 9 liegen aneinander. Nach dem Verschweißen der Stege 9 ist der Rücklauf 3 gebildet.The flow 2 and the return 3 are also formed by the sheet metal parts 7, 8, but in different ways. The lead 2 is formed as follows: The profiled sheet metal parts 7, 8 are components of a mirror-symmetrically constructed sheet. The axis of symmetry runs in the middle of the top of the flow 2. The sheet is folded to produce the flat radiator. After folding - and welding in a manner to be described later - the profiled sheet metal parts 7, 8 is the Preliminary run 2 available. The return 3 is formed as follows: In the extension of the beads 4, webs 9 are formed on the profiled sheet metal parts 7, 8 beyond the return 3. These webs 9 lie against each other. After the webs 9 have been welded together, the return 3 is formed.

Die Anschlüsse 5 für die Zu- und Abfuhr des Heizmediums sind im Bereich von Vorlauf 2 und Rücklauf 3 jeweils auf der der anderen Reihe zugewandten Seite des Flachheizkörpers angeschweißt.The connections 5 for the supply and discharge of the heating medium are welded in the area of flow 2 and return 3 on the side of the flat radiator facing the other row.

Jedes Blechteil 7 oder 8 ist an den Enden 21, 31 des Vorlaufs 2 und des Rücklaufs 3 in Richtung des anderen Blechteils 8 oder 7 gebogen. Die gebogenen Blechteile sind durch eine Rundnaht 10 verschweißt. Das Schweißen der Rundnaht 10 erfolgt gleichzeitig mit dem Schweißen einer Hochnaht 11 zwischen den Rundnähten 10 im Bereich des Vorlaufs 2 und des Rücklaufs 3 an derselben Stirnseite des Flachheizkörpers. Die Rundnaht 10 und die Hochnaht 11 werden in demselben Arbeitsgang als Fallnaht in einem Schutzgas-Schweißverfahren, z. B. mit C02 als Schutzgas, verschweißt. Der Rücken 12 des Vorlaufs 2 ist an den Enden vor dem Biegen und Verschweißen mit je einer gestrichelt dargestellten dreieckigen Ausnehmung versehen. Dies vermeidet das Überlappen der Blechteile im Bereich der Rundnaht 10; garantiert vielmehr die saubere Ausführung des Verbindens der Blechteile 7, 8 auch im Bereich der Stirnseiten von Vorlauf 2 und Rücklauf 3.Each sheet metal part 7 or 8 is bent at the ends 21, 31 of the flow 2 and the return 3 in the direction of the other sheet metal part 8 or 7. The bent sheet metal parts are welded by a circular seam 10. The welding of the circular seam 10 takes place simultaneously with the welding of a vertical seam 11 between the circular seams 10 in the area of the forward flow 2 and the return flow 3 on the same end face of the flat radiator. The circular seam 10 and the vertical seam 11 are in the same operation as vertical down in a protective gas welding process, for. B. welded with C0 2 as a protective gas. The back 12 of the lead 2 is provided at the ends with a triangular recess shown in broken lines at the ends before bending and welding. This avoids the overlapping of the sheet metal parts in the area of the circular seam 10; rather guarantees the clean execution of the connection of the sheet metal parts 7, 8 also in the area of the front sides of the forward 2 and return 3.

Als Ausführungsbeispiel ist ein zweireihiger Flachheizkörper gewählt. Die beiden Reihen des Flachheizkörpers sind gleich aufgebaut. Es kann auch ein einreihiger oder mehrreihiger Flachheizkörper gebildet sein, dessen Reihen gleich aufgebaut sind.A two-row flat radiator is selected as the exemplary embodiment. The two rows of the flat radiator have the same structure. A single-row or multi-row flat radiator can also be formed, the rows of which have the same structure.

Die Herstellung des Flachheizkörpers geschieht wie folgt: Aus einem Blech werden spiegelsymmetrisch die profilierten Blechteile 7, 8 gebildet: Es werden die Sicken 4 sowie die Hälften von Vorlauf 2 und Rücklauf 3 eingeprägt. Das Blech wird mit Löchern für die Anschlüsse 5 versehen und auf Länge geschnitten. Der später den Rücken 12 des Vorlaufs 2 bildende Teil des Blechs wird an seinen Enden mit einem dreieckigen Ausschnitt versehen. Die Blechteile 7, 8 werden unter Bildung des Vorlaufs 2, des Rücklaufs 3 und der Kanäle 1 mit den Sicken 4 und dem den Rücklauf 3 an der Unterkante begrenzende Steg 9 aufeinanderliegend zu einer Vorderwand und einer Rückwand gefaltet. Die Sicken 4 werden in einem Punkt-Schweißverfahren miteinander verschweißt. Entlang den Stegen 9 wird eine Längsnaht geschweißt. In einem Preßschweiß-Verfahren werden im Bereich der Löcher die Anschlüsse 5 angeschweißt. Der Vorlauf 2 und der Rücklauf 3 werden an ihren Enden durch Biegen jeweils des einen Blechteils 7 oder 8 in Richtung des anderen Blechteils 8 oder 7 verschlossen. Entlang den den Flachheizkörper an den Stirnseiten begrenzenden halben Sicken wird die Hochnaht 11 geschweißt; gleichzeitig die Rundnähte 10 im Bereich der aufeinanderzugebogenen, halbrunden und hohlen Stirnseiten von Vorlauf 2 und Rücklauf 3. Das Schweißen der Nähte erfolgt in einem Arbeitsgang als Fallnaht in dem Schutzgas-Schweißverfahren, z.B. mit C02 als Schutzgas. Es entstehen abgerundete Schweißnähte in den genannten Bereichen.The flat radiator is produced as follows: The profiled sheet metal parts 7, 8 are formed from a sheet in a mirror-symmetrical manner: the beads 4 and the halves of the feed 2 and return 3 are embossed. The plate is provided with holes for the connections 5 and cut to length. The part of the sheet which later forms the back 12 of the lead 2 is provided with a triangular cutout at its ends. The sheet metal parts 7, 8 are folded one above the other to form a front wall and a rear wall to form the flow 2, the return 3 and the channels 1 with the beads 4 and the web 9 delimiting the return 3 at the lower edge. The beads 4 are welded together in a spot welding process. A longitudinal seam is welded along the webs 9. In a pressure welding process, the connections 5 are welded in the area of the holes. The flow 2 and the return 3 are closed at their ends by bending one sheet metal part 7 or 8 in the direction of the other sheet metal part 8 or 7. The raised seam 11 is welded along the half beads delimiting the flat radiator on the end faces; at the same time the circumferential welds 10 3. in the region of the towards each other bent, semi-circular and hollow end faces of lead 2 and return the welding of the seams is effected in one operation as a case seam in the shielding gas welding process, for example with C0 2 as a protective gas. Rounded weld seams are created in the areas mentioned.

Claims (4)

1. A method of production of a flat heater unit having a front wall and a rear wall between which are formed a flow (2) and a return (3) as well as channels (1) arranged in parallel with one another between the flow (2) and the return (3) and separated from one another by stiffening corrugations (4), and having connections (5) to the flow (2) and the return (3) in the front wall and/or the rear wall, the front wall and the rear wall being formed from the same metal sheet welded into two sheetmetal parts stamped with mirror symmetry and folded, characterized in that a metal sheet is corrugated, stamped and cut to length into the sheetmetalparts (7; 8) formed with mirror symmetry and furthermore holes are cut in it, that the sheetmetal parts (7; 8) are folded into the front wall and the rear wall to lie against one another and so form the flow (2), the return (3) and the channels (1) by the stiffening corrugations (4) and a flange (9) bounding the return (3) on the outside, that the connections (5) are welded round the holes, that the flow (2) and the return (3) are closed off at their ends by in each case bending the one sheetmetal part (7; 8) in the direction of the other sheetmetal part (8; 7) and that in the case of the flow (2) the sheetmetal parts (7; 8) bent together and in the case of the return (3) the flanges (9) and furthermore the stiffening corrugations (4) are all respectively welded.
2. A method as in Claim 1, characterized in that the head (12) of the flow (2) is provided at its ends with a notch.
3. A method as in Claim 1 or 2, characterized in that the sheetmetal parts (7; 8) are welded together at the ends of the flow (2) and the return (3) by a circular bead (10).
4. A method as in one of the Claims 1 to 3, characterized in that the ends of the sheetmetal parts (7; 8) bent together in the regions of the flow (2) and the return (3) and the upright edges of the sheetme- taI parts (7; 8) running between the ends are welded in one working step as a downward weld in a shielded-arc welding process.
EP85104469A 1984-05-17 1985-04-12 Method for the manufacture of a flat radiator Expired EP0162271B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85104469T ATE35736T1 (en) 1984-05-17 1985-04-12 METHOD OF MANUFACTURE OF A PANEL RADIATOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843418316 DE3418316A1 (en) 1984-05-17 1984-05-17 FLAT RADIATOR AND METHOD FOR THE PRODUCTION THEREOF
DE3418316 1984-05-17

Publications (3)

Publication Number Publication Date
EP0162271A2 EP0162271A2 (en) 1985-11-27
EP0162271A3 EP0162271A3 (en) 1986-08-27
EP0162271B1 true EP0162271B1 (en) 1988-07-13

Family

ID=6236105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104469A Expired EP0162271B1 (en) 1984-05-17 1985-04-12 Method for the manufacture of a flat radiator

Country Status (3)

Country Link
EP (1) EP0162271B1 (en)
AT (1) ATE35736T1 (en)
DE (2) DE3418316A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI101644B1 (en) * 1994-02-25 1998-07-31 Ahlstrom Machinery Oy Heat transfer elements and process for making it
IT1287232B1 (en) * 1996-04-12 1998-08-04 Commital Sami Spa DISTRIBUTION GROUP FOR RADIANT PLATE RADIATORS
ITAR20130010U1 (en) * 2013-12-18 2015-06-19 Antonio Petracca HEATER FOR HEATING SYSTEMS, IN PARTICULAR FOR HEATING SYSTEMS FOR CIVIL USE.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE313804C (en) * 1917-09-24
BE370827A (en) * 1929-06-06
DE686838C (en) * 1934-07-12 1940-01-17 Curt Stedefeld Dipl Ing Streamlined railway vehicle body
GB499696A (en) * 1937-04-08 1939-01-27 Vries Robbe & Co N V De A method of manufacturing sheet metal radiator elements and the product manufacturedthereby
DE709736C (en) * 1937-08-29 1941-08-25 Paul Gaetje Plate radiator
CH318147A (en) * 1954-03-12 1956-12-31 Sulzer Ag Central heating radiators
GB845178A (en) * 1958-11-13 1960-08-17 Washington Engineering Ltd Improvements in or relating to the manufacture of heat exchanger panels
FR1362000A (en) * 1963-04-13 1964-05-29 Finissage De Produits Metallur Heat exchange panel
DE2510303B2 (en) * 1975-03-10 1976-12-30 METHOD FOR MANUFACTURING SHEET METAL SHELLS FOR ARTICULATED TUBE RADIATORS WITH MORE THAN FOUR TUBES PER ELEMENT
DE2510875A1 (en) * 1975-03-13 1976-09-30 Cloos Fa Carl Thin sheet welding process - with negative polarity welding wire
DE3308945A1 (en) * 1983-03-12 1984-09-13 Baufa-Werke Richard Rinker GmbH, 5750 Menden Flat heater

Also Published As

Publication number Publication date
DE3563794D1 (en) 1988-08-18
DE3418316A1 (en) 1985-11-21
ATE35736T1 (en) 1988-07-15
EP0162271A2 (en) 1985-11-27
EP0162271A3 (en) 1986-08-27

Similar Documents

Publication Publication Date Title
DE69703638T2 (en) Flat tube with a spacer in the middle for heat exchangers
DE69806518T2 (en) Heat exchanger and process for its manufacture
EP0660064A2 (en) Joint for connecting a tube to an end plate in a heat exchanger
DE3201439C2 (en) radiator
DE2646234C3 (en) Radiator with horizontal flat tubes connected to one another by vertical collector tubes for flow and return
DE2506434A1 (en) METHOD FOR MANUFACTURING FLAT HEAT EXCHANGER TUBES
EP0326813B1 (en) Heat exchanger, especially an aluminium water-air cooler
EP0162271B1 (en) Method for the manufacture of a flat radiator
CH644444A5 (en) HEAT EXCHANGER.
DE1451258A1 (en) Heat exchanger
EP0092033B1 (en) Process for manufacture of a plate heat exchanger
DE2440184A1 (en) Steel plate component for central heating radiators - steel plate halves are bent up to two separate flanges to form additional heating faces
DE19800230C2 (en) Radiators, especially tube radiators
EP0994320B1 (en) Radiator with at least two stacked flat tubes
DE1601151A1 (en) Plate heat exchanger
AT401575B (en) DISK RADIATOR
DE102005026328B4 (en) Heat exchanger plate for a plate heat exchanger and method for producing a heat exchanger plate
DE3701362C2 (en)
EP0853224A1 (en) Heat exchanger
DE2721464A1 (en) SOLAR PANEL
EP0158010B1 (en) Element for steel radiators
DE2142192C3 (en) Hot water radiator
DE3308945A1 (en) Flat heater
CH693803A5 (en) Room heater with at least two flat tubes one above other
CH420540A (en) Manufacturing process for radiators and radiators manufactured according to the process

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE GB IT LI NL SE

17P Request for examination filed

Effective date: 19870213

17Q First examination report despatched

Effective date: 19870601

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19880713

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19880713

REF Corresponds to:

Ref document number: 35736

Country of ref document: AT

Date of ref document: 19880715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3563794

Country of ref document: DE

Date of ref document: 19880818

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: BUDERUS HEIZTECHNIK GMBH

Effective date: 19890111

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19890412

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19890413

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19890430

Ref country code: CH

Effective date: 19890430

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19890430

Year of fee payment: 5

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: BUDERUS HEIZTECHNIK GMBH, WETZLAR TE-PATENTWESEN

Effective date: 19890111

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19900409

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19900412

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19900119

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19910430

BERE Be: lapsed

Owner name: BAUFA-WERKE RICHARD RINKER G.M.B.H.

Effective date: 19910430

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920619

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940101

EUG Se: european patent has lapsed

Ref document number: 85104469.3

Effective date: 19900412