EP0351606B1 - Heat exchanger with tubes or such having opposing directions of circulation - Google Patents

Heat exchanger with tubes or such having opposing directions of circulation Download PDF

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Publication number
EP0351606B1
EP0351606B1 EP89111903A EP89111903A EP0351606B1 EP 0351606 B1 EP0351606 B1 EP 0351606B1 EP 89111903 A EP89111903 A EP 89111903A EP 89111903 A EP89111903 A EP 89111903A EP 0351606 B1 EP0351606 B1 EP 0351606B1
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EP
European Patent Office
Prior art keywords
wall
heat exchanger
tubes
hood
exchanger according
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
EP89111903A
Other languages
German (de)
French (fr)
Other versions
EP0351606A1 (en
Inventor
Werner Hensel
Klaus Daiber
Manfred Milbredt
Joao-Manuel Rodriques Alves
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.)
N.V. VAILLANT S.A.
VAILLANT-SCHONEWELLE B.V.
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant-Schonewelle BV
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
Priority claimed from AT173788A external-priority patent/AT390507B/en
Priority claimed from AT241688A external-priority patent/AT396177B/en
Application filed by Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant-Schonewelle BV filed Critical Vaillant Austria GmbH
Publication of EP0351606A1 publication Critical patent/EP0351606A1/en
Application granted granted Critical
Publication of EP0351606B1 publication Critical patent/EP0351606B1/en
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
    • 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
    • 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

Definitions

  • the invention relates to a heat exchanger with tubes that are adjacent to one another, preferably arranged parallel to one another, connected to one another via end-side deflections and flow through one another in opposite directions, the deflections having an outer wall forming a hood covering the end sides of adjacent tubes.
  • the object of the invention is to design the deflections as fluidly as possible as cheaply, and in such a way that their manufacture can be carried out inexpensively and with little expenditure of time and effort.
  • Both walls namely the outer wall forming the hood and / or the inner wall, can be formed, preferably pulled, from sheet metal in a very solid and with sufficient rigidity.
  • these walls can be connected to one another at the edges, for example by a circumferential fold, but also by welding, soldering, gluing or the like.
  • the outer wall forming the hood can be shaped in at least one of its two end regions to form a connecting piece suitable for connecting such a power.
  • this connecting piece is coaxially opposite an end face of one of the tubes of the heat exchanger, so that the flow of a medium flowing in via the connecting piece continues as far as possible in the tubes of the heat exchanger or the flow of the medium emerging from these tubes - likewise without interference - can get into a discharge line.
  • Such a connecting piece can advantageously be designed within the scope of the invention with an oval, in particular elliptical cross-section, the longer axis of which corresponds approximately to the parallel dimension of the part of the outer wall that forms the hood, bulges and encloses a cavity.
  • the sheet metal forming the outer wall can be used in the best possible way for efficient management of the medium used for heat exchange.
  • the connecting piece with a circumferential shoulder can be designed to taper outwards.
  • the illustrations first show the outer wall 1, which is designed as a hood 9, covering the end faces of the two tubes 5 of the heat exchanger to be connected, and the inner wall 2, which extends over these end faces and is penetrated by the cavities 6 of these tubes 5 and bridges the distance between the tubes 5 the connecting piece 3 serving to connect the pipes 5.
  • the inner wall 2 in its regions bridging the distances between the tubes 5 and serving to redirect the heat-exchanging medium carried in these tubes 5, has a concave cross section with a curvature directed against these connecting pieces 3.
  • Both walls ie the outer wall 1 forming the hood 9 and the inner wall 2, can be made of sheet metal, preferably drawn.
  • the outer wall 1 of the deflection can be connected to the inner wall 2 in a flat and sealing manner by means of a fold 4 running all around on the edge, or also by welding, soldering or gluing.
  • the arrangement and shape of the two walls 1 and 2 result in a fluidically very favorable profile for the medium circulating and to be deflected in the cavities 6 of the tubes 5 of the heat exchanger, for example water to be heated.
  • the outer wall 1 of the deflection can extend over the mouths of a group of parallel tubes 5, of which only three tubes 5 are shown, the tube 5 shown on the right in FIG. 3 being the first (or last) is this coulter and is to be connected to a supply or discharge line for the medium flowing through the pipe coulter and is not changed in diameter, in contrast to the embodiment according to FIG. 1, in which the pipe has been expanded.
  • This connecting piece 7 is coaxially opposite to an end face of this (first or last) tube 5, so that the flow of a medium flowing through the tube 5 continues smoothly into the connecting piece 7 and the line 8 (or vice versa from the line 8 into the connecting piece 7 and the pipe 5 continues).
  • the connecting piece 7 can advantageously be designed within the scope of the invention with an elliptical cross section, the longer axis of which corresponds approximately to the parallel dimension a of the hood 9-forming, enclosing a region of the outer wall 1, so that the latter Outer wall 1 forming, deformed sheet metal blank is particularly efficiently used in this way for the deflection of the medium.
  • this connecting piece 7 is profiled according to FIG. 3 with an inwardly directed shoulder 10, which tapers it outwards.

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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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

In a heat exchanger having mutually adjacent pipes (5), which are preferably arranged parallel to one another, are connected to one another via diversions located on the front side, and through which a medium flows in sequentially opposing directions, the said diversions are bounded in each case by an outer wall (1), which forms a hood (9) covering the end faces of mutually adjacent pipes (5), and by an inner wall (2), which extends over said end faces and is penetrated by the cavities (6). A connection stub (7) for a line (8) which serves to supply or remove the medium flowing through the elements (5) forming the cavities can be formed in one of the end regions of the outer wall (1). <IMAGE>

Description

Die Erfindung betrifft einen Wärmetauscher mit einander benachbarten, vorzugsweise zueinander parallel angeordneten, über stirnseitige Umlenkungen miteinander verbundenen, von einem Medium nacheinander gegenläufig durchströmten Rohren, wobei die Umlenkungen eine eine die Stirnseiten einander benachbarter Rohre überdeckende Haube bildende Außenwandung aufweisen.The invention relates to a heat exchanger with tubes that are adjacent to one another, preferably arranged parallel to one another, connected to one another via end-side deflections and flow through one another in opposite directions, the deflections having an outer wall forming a hood covering the end sides of adjacent tubes.

Ein derartiger Wärmetauscher ist aus "Elemente des Apparatebaus" von H. Titze, 1963, Springer Verlag, Berlin, Seite 190, bekannt. Die gegenläufig durchströmten Rohre sind dabei innerhalb der Haube durch plattenförmige Elemente, welche von dem Wärmetauschmedium umströmt werden, voneinander getrennt. Nachteilig ist der erhebliche Strömungswiderstand im Bereich dieser Umlenkungen. Der gleiche Nachteil tritt auch bei den in der EP-A-01 14 554 und der FR-A-20 85 308 beschriebenen Umlenkungen bzw. Einlaß-/Auslaßbereichen von Wärmetauschern auf.Such a heat exchanger is known from "Elements of Apparatus Construction" by H. Titze, 1963, Springer Verlag, Berlin, page 190. The tubes flowing through in opposite directions are separated from one another within the hood by plate-shaped elements around which the heat exchange medium flows. The considerable flow resistance in the area of these deflections is disadvantageous. The same disadvantage also occurs with the deflections or inlet / outlet areas of heat exchangers described in EP-A-01 14 554 and FR-A-20 85 308.

Aufgabe der Erfindung ist es, die Umlenkungen strömungstechnisch möglichst günstig zu gestalten, und zwar derart, daß ihre Herstellung kostengünstig und mit geringem Zeit- und Müheaufwand durchführbar ist.The object of the invention is to design the deflections as fluidly as possible as cheaply, and in such a way that their manufacture can be carried out inexpensively and with little expenditure of time and effort.

Diese Aufgabe wird bei einem Wärmetauscher der eingangs näher bezeichneten Art gemäß der Erfingdung dadurch gelöst, daß die Umlenkungen von einer sich über die Stirnseiten erstreckenden Innenwandung begrenzt sind, wobei in der Innenwandung dem Anschluß an die Rohre dienende Anschlußstutzen geformt sind und die Innenwandung in ihrem den Abstand zwischen den Anschlußstutzen überbrückenden Bereich mit einem gegen diese Stutzen gerichteten konkaven Querschnittswölbung geformt ist.This object is achieved in a heat exchanger of the type specified at the outset in accordance with the invention in that the deflections are limited by an inner wall extending over the end faces, the connecting pieces serving to connect to the pipes being formed in the inner wall and the inner wall in their the Distance between the connecting piece bridging area is formed with a concave cross-sectional curvature directed against these connecting pieces.

Solche Umlenkungen sind nicht nur sehr einfach und kostensparend aus Blechen durch deren Verformung herstellbar, sondern auch in strömungstechnischer Hinsicht optimal.Such deflections are not only very simple and cost-effective to produce from sheet metal by deforming them, but are also optimal in terms of flow technology.

Beide Wandungen, nämlich die die Haube bildende Außenwandung und/oder die Innenwandung lassen sich sehr solide und mit ausreichender Steifigkeit aus Blech formen, vorzugsweise ziehen.Both walls, namely the outer wall forming the hood and / or the inner wall, can be formed, preferably pulled, from sheet metal in a very solid and with sufficient rigidity.

Dies ergibt den weiteren schätzenswerten Vorteil, daß diese Wandungen, zum Beispiel durch eine ringsumlaufende Falzung, aber auch durch Schweißen, Löten, Kleben oder dergleichen, randseitig miteinander verbunden werden können.This gives the further appreciable advantage that these walls can be connected to one another at the edges, for example by a circumferential fold, but also by welding, soldering, gluing or the like.

Zum Anschluß einer Leitung, die das die Rohre durchströmende Medium dem Wärmetauscher zuführt oder es aus dem Wärmetauscher abführt, kann die die Haube bildende Außenwandung in zumindest einem ihrer beiden Endbereiche zu einem für den Anschluß einer solchen Leistung geeigneten Anschlußstutzen geformt sein.To connect a line which feeds the medium flowing through the tubes to the heat exchanger or removes it from the heat exchanger, the outer wall forming the hood can be shaped in at least one of its two end regions to form a connecting piece suitable for connecting such a power.

Nach einer bevorzugten, strömungstechnisch günstigen Ausführungsform liegt dieser Anschlußstutzen einer Stirnseite eines der Rohre des Wärmetauschers koaxial gegenüber, so daß sich der Strom eines über den Anschlußstutzen zuströmenden Mediums möglichst in den Rohren des wärmetauschers fortsetzt beziehungsweise der Strom des aus diesen Rohren austretenden Mediums - ebenso störungsfrei - in eine Abfuhrleitung gelangen kann.According to a preferred embodiment which is favorable in terms of flow technology, this connecting piece is coaxially opposite an end face of one of the tubes of the heat exchanger, so that the flow of a medium flowing in via the connecting piece continues as far as possible in the tubes of the heat exchanger or the flow of the medium emerging from these tubes - likewise without interference - can get into a discharge line.

Ein solcher Anschlußstutzen kann im Rahmen der Erfindung vorteilhafterweise mit einem ovalen, insbesondere elliptischen Querschnitt ausgebildet sein, dessen längere Achse etwa der hierzu parallelen Abmessung des die Haube bildenden, ausgewölbten und einen Hohlraum umschließenden Teiles der Außenwandung entspricht. Dadurch kann das die Außenwandung bildende Blech bestmöglich für eine rationelle Führung des dem Wärmetausch dienenden Mediums verwertet werden.Such a connecting piece can advantageously be designed within the scope of the invention with an oval, in particular elliptical cross-section, the longer axis of which corresponds approximately to the parallel dimension of the part of the outer wall that forms the hood, bulges and encloses a cavity. As a result, the sheet metal forming the outer wall can be used in the best possible way for efficient management of the medium used for heat exchange.

Um schließlich den dichtenden Anschluß einer dieses Medium führenden Leitung zu erleichtern, kann der Anschlußstutzen mit einer ringsumlaufenden Absetzung sich nach außen verjüngend gestaltet sein.In order to finally facilitate the sealing connection of a line carrying this medium, the connecting piece with a circumferential shoulder can be designed to taper outwards.

Ausführungsbeispiele des Erfindungsgegenstandes sind in den Zeichnungen veranschaulicht und nachstehend anhand dieser Zeichnungen erläutert.Embodiments of the subject matter of the invention are illustrated in the drawings and explained below with reference to these drawings.

Im einzelnen zeigen:

  • Figur 1 im Schnitt nach I-I der Figur 2 eine einzelne Umlenkung, wobei dieser Schnitt durch die Achsen der beiden miteinander zu verbindenden, einander benachbart verlaufenden Rohre des Wärmetauschers geführt ist,
  • Figur 2 zeigt im Schnitt nach II-II der Figur 1 den den Abstand der Rohre überbrückenden Bereich der Umlenkung.
  • Figur 3 ist ein Teilschnitt einer mit einem Leitungsanschluß ausgestatteten Umlenkung nach III-III der Figur 4 und die
  • Figur 4 ist eine Draufsicht nach Pfeil IV der Figur 3.
In detail show:
  • 1 in section II of FIG. 2 shows a single deflection, this section being made through the axes of the two mutually adjacent tubes of the heat exchanger to be connected,
  • Figure 2 shows in section along II-II of Figure 1 the area of the deflection bridging the distance between the tubes.
  • Figure 3 is a partial section of a deflection equipped with a line connection according to III-III of Figure 4 and the
  • FIG. 4 is a top view according to arrow IV of FIG. 3.

Die Darstellungen zeigen zunächst die die Stirnseiten der beiden zu verbindenden Rohre 5 des Wärmetauschers überdeckende, als Haube 9 ausgebildete Außenwandung 1 und die sich über diese Stirnseiten erstreckende, von den Hohlräumen 6 dieser Rohre 5 durchsetzte und den Abstand zwischen den Rohren 5 überbrückende Innenwandung 2 mit dem dem Anschluß der Rohre 5 dienenden Anschlußstutzen 3.The illustrations first show the outer wall 1, which is designed as a hood 9, covering the end faces of the two tubes 5 of the heat exchanger to be connected, and the inner wall 2, which extends over these end faces and is penetrated by the cavities 6 of these tubes 5 and bridges the distance between the tubes 5 the connecting piece 3 serving to connect the pipes 5.

Wie die Figur 2 zeigt, ist die Innenwandung 2 in ihren die Abstände der Rohre 5 überbrückenden, der Umleitung des in diesen Rohren 5 geführten wärmetauschenden Mediums dienenden Bereichen im Querschnitt konkav mit einer gegen diese Anschlußstutzen 3 gerichteten Wölbung geformt.As FIG. 2 shows, the inner wall 2, in its regions bridging the distances between the tubes 5 and serving to redirect the heat-exchanging medium carried in these tubes 5, has a concave cross section with a curvature directed against these connecting pieces 3.

Beide Wandungen, also die die Haube 9 bildende Außenwandung 1 und die Innenwandung 2, können aus Blech gefertigt, vorzugsweise gezogen sein.Both walls, ie the outer wall 1 forming the hood 9 and the inner wall 2, can be made of sheet metal, preferably drawn.

Die Außenwandung 1 der Umlenkung kann mit der Innenwandung 2 flächig und dichtend durch eine randseitig ringsumlaufende Falzung 4 oder auch eine Schweißung, Lötung oder Klebung verbunden werden.The outer wall 1 of the deflection can be connected to the inner wall 2 in a flat and sealing manner by means of a fold 4 running all around on the edge, or also by welding, soldering or gluing.

Wie die Darstellungen erkennen lassen, ergeben die beiden Wandungen 1 und 2 in ihrer Anordnung und Formgebung ein strömungstechnisch sehr günstiges Profil für das in den Hohlräumen 6 der Rohre 5 des Wärmetauschers umlaufende und umzulenkende Medium, also zum Beispiel zu erhitzendes Wasser.As can be seen in the illustrations, the arrangement and shape of the two walls 1 and 2 result in a fluidically very favorable profile for the medium circulating and to be deflected in the cavities 6 of the tubes 5 of the heat exchanger, for example water to be heated.

Wie die Figuren 3 und 4 zeigen, kann sich die Außenwandung 1 der Umlenkung über die Mündungen einer Schar zueinander paralleler Rohre 5 erstrecken, von denen nur drei Rohre 5 dargestellt sind, wobei das in der Figur 3 rechts außen dargestellte Rohr 5 das erste (oder letzte) dieser Schar ist und an eine Zufuhr- oder Abfuhrleitung für das die Rohrschar durchströmende Medium anzuschließen ist und nicht im Durchmesser geändert ist, im Gegensatz zur Ausführung nach Figur 1, in der das Rohr aufgeweitet wurde.As FIGS. 3 and 4 show, the outer wall 1 of the deflection can extend over the mouths of a group of parallel tubes 5, of which only three tubes 5 are shown, the tube 5 shown on the right in FIG. 3 being the first (or last) is this coulter and is to be connected to a supply or discharge line for the medium flowing through the pipe coulter and is not changed in diameter, in contrast to the embodiment according to FIG. 1, in which the pipe has been expanded.

Im Bereich dieses außenliegenden Rohres 5 ist nun die die Haube 9 bildende Außenwandung 1 zu einem Anschlußstutzen 7 für jene Leitung 8 geformt, über die das die Rohre 5 durchströmende wärmetauschende Medium entweder dem Wärmetauscher zugeführt oder aus diesem Wärmetauscher abgeführt wird.In the area of this outer tube 5, the outer wall 1 forming the hood 9 is now formed into a connecting piece 7 for the line 8 via which the heat-exchanging medium flowing through the tubes 5 is either fed to the heat exchanger or is removed from this heat exchanger.

Dieser Anschlußstutzen 7 liegt einer Stirnseite dieses (ersten bzw. letzten) Rohres 5 koaxial gegenüber, so daß sich der Strom eines das Rohr 5 durchströmenden Mediums störungsfrei in den Anschlußstutzen 7 und die Leitung 8 fortsetzt (oder umgekehrt aus der Leitung 8 in den Anschlußstutzen 7 und das Rohr 5 fortsetzt).This connecting piece 7 is coaxially opposite to an end face of this (first or last) tube 5, so that the flow of a medium flowing through the tube 5 continues smoothly into the connecting piece 7 and the line 8 (or vice versa from the line 8 into the connecting piece 7 and the pipe 5 continues).

Wie die Figur 4 zeigt, kann der Anschlußstutzen 7 im Rahmen der Erfindung vorteilhafterweise mit einem elliptischen Querschnitt ausgebildet sein, dessen längere Achse etwa der hierzu parallelen Abmessung a des die Haube 9 formenden, einen Hohlraum einschließenden Bereiches der Außenwandung 1 entspricht, so daß der diese Außenwandung 1 bildende, verformte Blechzuschnitt auf diese Weise besonders rationell für die Umlenkung des Mediums verwertet wird.As FIG. 4 shows, the connecting piece 7 can advantageously be designed within the scope of the invention with an elliptical cross section, the longer axis of which corresponds approximately to the parallel dimension a of the hood 9-forming, enclosing a region of the outer wall 1, so that the latter Outer wall 1 forming, deformed sheet metal blank is particularly efficiently used in this way for the deflection of the medium.

Um den Anschluß einer Leitung 8 an diesen Anschlußstutzen 7 zu erleichtern, ist dieser Anschlußstutzen 7 gemäß Figur 3 mit einer einwärts gerichteten Absetzung 10 profiliert, die ihn nach außen verjüngt.In order to facilitate the connection of a line 8 to this connecting piece 7, this connecting piece 7 is profiled according to FIG. 3 with an inwardly directed shoulder 10, which tapers it outwards.

Claims (7)

  1. A heat exchanger comprising mutually adjacent, preferably parallel tubes, which are interconnected at their ends by bends and are consecutively flown through by a fluid in mutually opposite directions, wherein the bends have an outer wall which covers the end faces of adjacent tubes, characterized in that the bends are defined by an inner wall (2), which extends over the end faces, the inner wall (2) is formed with the tubular ports (3) for connection to the tubes, and that portion of the inner wall (2) which spans the space between the tubular ports (3) has in cross-section a concave curvature which faces said tubular ports (3).
  2. A heat exchanger according to claim 1, characterized in that the outer wall (1), which constitutes the hood (9), and/or the inner wall (2) consist of shaped, preferably drawn, sheet metal.
  3. A heat exchanger according to claim 2, characterized in that the outer wall (1), which constitutes the hood (9), is joined to the inner wall (2) by an annular peripheral folded seam (4) or by welding, soldering or an adhesive joint.
  4. A heat exchanger according to any of claims 1 to 3, characterized in that the outer wall (1), which constitutes the hood (9), is formed in at least one of its end portions with a tubular port (7), which is adapted to be connected to a line (8), by which the fluid flowing through the tubes (5) is supplied or discharged.
  5. A heat exchanger according to claim 4, characterized in that said tubular port (7) coaxially faces one end face of one of the tubes (5).
  6. A heat exchanger according to claim 4 or 5, characterized in that the tubular port (7) is formed to have an oval, particularly elliptical cross-section, the major axis of which approximately corresponds to the parallel dimension (a) of that the cavity-defining curved portion of the outer wall (1), which portion constitutes the hood (9).
  7. A heat exchanger according to any of either of claims 4 and 6, characterized in that the tubular port (7) is formed with an annular peripheral shoulder (10) so that the port is outwardly tapered.
EP89111903A 1988-07-05 1989-06-30 Heat exchanger with tubes or such having opposing directions of circulation Expired - Lifetime EP0351606B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT1737/88 1988-07-05
AT173788A AT390507B (en) 1988-07-05 1988-07-05 Heat exchanger having counterflow pipes or the like
AT241688A AT396177B (en) 1988-09-30 1988-09-30 Tubular heat exchanger - has external cowl forming connection between adjacent tubes
AT2416/88 1988-09-30

Publications (2)

Publication Number Publication Date
EP0351606A1 EP0351606A1 (en) 1990-01-24
EP0351606B1 true EP0351606B1 (en) 1993-04-21

Family

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Application Number Title Priority Date Filing Date
EP89111903A Expired - Lifetime EP0351606B1 (en) 1988-07-05 1989-06-30 Heat exchanger with tubes or such having opposing directions of circulation

Country Status (3)

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EP (1) EP0351606B1 (en)
AT (1) ATE88558T1 (en)
DE (2) DE58904120D1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2656549A1 (en) * 1989-12-28 1991-07-05 Vaillant Sarl METHOD FOR MANUFACTURING AN ELBOW AND ELBOW MADE ACCORDING TO SAID METHOD
EP0666461B2 (en) † 1994-02-04 2004-11-17 Behr GmbH & Co. KG Pipe connection for a water casing of a motor vehicle heat exchanger

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012204151A1 (en) * 2012-03-16 2013-09-19 Behr Gmbh & Co. Kg Heat exchanger

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191222869A (en) * 1912-10-07 1913-04-10 Koppers Gmbh Heinrich Improvements in Cooling Apparatus.
GB430347A (en) * 1933-12-11 1935-06-11 Frederick John Trevallon Barne Improved cooling device for liquids
GB620020A (en) * 1947-01-02 1949-03-17 Serck Radiators Ltd Improvements relating to heat interchange apparatus
FR2085308A7 (en) * 1970-04-08 1971-12-24 Rousselin Norbert
DE3143333C1 (en) * 1981-10-31 1983-04-14 Daimler-Benz Ag, 7000 Stuttgart Heat exchanger with an inflatable bundle of parallel pipes
FR2538526B1 (en) * 1982-12-22 1986-12-19 Chausson Usines Sa COLLECTOR PLATE FOR TUBE AND WATER BOX HEAT EXCHANGER

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2656549A1 (en) * 1989-12-28 1991-07-05 Vaillant Sarl METHOD FOR MANUFACTURING AN ELBOW AND ELBOW MADE ACCORDING TO SAID METHOD
EP0666461B2 (en) † 1994-02-04 2004-11-17 Behr GmbH & Co. KG Pipe connection for a water casing of a motor vehicle heat exchanger

Also Published As

Publication number Publication date
DE58904120D1 (en) 1993-05-27
ATE88558T1 (en) 1993-05-15
EP0351606A1 (en) 1990-01-24
DE3921531A1 (en) 1990-01-11

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