EP1384968A1 - Heat exchanger and associated process of fabricating - Google Patents

Heat exchanger and associated process of fabricating Download PDF

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Publication number
EP1384968A1
EP1384968A1 EP03015346A EP03015346A EP1384968A1 EP 1384968 A1 EP1384968 A1 EP 1384968A1 EP 03015346 A EP03015346 A EP 03015346A EP 03015346 A EP03015346 A EP 03015346A EP 1384968 A1 EP1384968 A1 EP 1384968A1
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EP
European Patent Office
Prior art keywords
border
tube sheet
flow guide
edge
guide plate
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.)
Granted
Application number
EP03015346A
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German (de)
French (fr)
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EP1384968B1 (en
Inventor
Klaus Dipl.-Ing. Kalbacher
Aleksandras Dipl.-Ing. Selkovas
Rudolf Konz
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Modine Manufacturing Co
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Modine Manufacturing Co
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Publication date
Application filed by Modine Manufacturing Co filed Critical Modine Manufacturing Co
Publication of EP1384968A1 publication Critical patent/EP1384968A1/en
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Publication of EP1384968B1 publication Critical patent/EP1384968B1/en
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Expired - Fee Related legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers

Definitions

  • the invention relates to a heat exchanger with a collecting box, the connecting edge extends on the circumferential edge of a tube sheet and the parallel to the tube sheet has a flow guide plate, the border between the Connection edge of the collecting tank and the peripheral edge of the tube sheet is arranged.
  • the invention also relates to a production method for the Heat exchanger.
  • the heat exchanger described is known from DE 199 62 861 A1 and from other documents.
  • the flow guide plate serves to reduce the pressure loss when the medium flows in or out of the tubes of the heat exchanger into the header box or from the header box into the heat exchanger tubes.
  • the flow guide plate made of metal or plastic is soldered or glued to the tube sheet.
  • Another flow guide plate, which has been referred to as a deflection plate, is known from DE 100 57 190 A1.
  • the production of such heat exchangers is difficult in part because the flow guide plate has to be placed on the tube sheet as an individual part when the heat exchanger is installed and must be held in a suitable manner in order to keep its position.
  • the object of the invention is the heat exchanger and its manufacture to improve and to offer further options.
  • the border of the flow guide plate such that it either allows the header tank to be mechanically fastened to the tube sheet by means of clipping or a technical connection by means of soldering, welding or gluing, the cross section of the border being, at least in sections, an open profile.
  • the flow plate it is possible to use both plastic collection boxes, which are clamped to the circumferential edge of the metal tube sheet, the flow plate also being a part made of plastic, and aluminum collection boxes, which are connected to the circumferential one Edge of the tube sheet are welded or soldered, in which case the flow plate is a part made of metal, which is welded or soldered to the connecting edge of the header box.
  • the flow plate can be produced in a manner known per se as an injection molded part made of plastic. It can also be produced as a die-cast part or from a sheet metal part made of aluminum by means of forming. The inventors have given the flow guide plate an additional fastening function and thus significantly expanded its use.
  • the cross section of the border is preferably an "U" open to the outside, one side of the "U” communicating with its outside with the connecting edge of the collecting tank and the other side of the "U” with its outside communicating with the circumferential edge of the tube sheet, where in the case of the clamping between the last-mentioned outside and the peripheral edge of the tube sheet, a seal known per se is inserted.
  • the inventive teaching is preferably intended for use in plastic boxes, the border of the flow guide plate consisting of plastic being first glued or welded to the connecting edge of the collecting box and then the collecting box with the border being placed in the peripheral edge of the tube sheet, in order to subsequently clamp the Fold the clamps, which are preferably arranged on the circumferential edge of the tube sheet, inwards, the bent clamps resting on the inside of the other leg of the "U".
  • the aerodynamically shaped webs arranged within the border do not have to be additionally held or fastened in order to maintain their position at the ends of the flat tubes even under operating conditions, as is required with some solutions from the prior art. Positioning is guaranteed with the connection of the flow guide plate on the header and the header on the tube plate.
  • the flow guide plate makes it possible to carry out the predominantly soldering connection of the ends of the flat tubes in the openings in the tube sheet in the manner which is most advantageous from the point of view of production technology.
  • the pressure drop is reduced to the required level by using the flow guide plate.
  • the webs can either be arranged between the ends of the flat tubes and rest on the tube plate or end directly above the ends of the flat tubes. In the former case, the webs should be equipped with lead-in chamfers down to the tube plate to make insertion easier.
  • the flow guide plate with its border at the connection edge the collecting box is attached by means of a joint and then the collection box with the border of the flow guide plate in the rotating Edge of the tube sheet and by means of a joint or Parenthesis connected.
  • the collection box and the flow guide plate is preferably made of plastic.
  • the flow guide plate with its border is initially on the circumferential Fixed edge of the tube sheet, for example during the soldering process Heat exchanger also soldered and then the collection box with his Connecting edge connected to the edge of the flow guide plate, this connection is a mechanical connection for plastic collection boxes is.
  • metal collecting boxes one can also be used, for example Welded connections come into question.
  • the heat exchanger is a charge air cooler for motor vehicles.
  • a second header box 1 is arranged, which can be identical to the arrangement shown.
  • the collecting tank 1 and the flow guide plate 5 have been produced from plastic in an injection molding process.
  • the tube sheet 4 is made of metal and has a circumferential edge 3 , which for mechanical connection is equipped in a manner known per se with projections 10 , which have already been bent over in FIG. 3, so that the projections 10 rest on the inside 13 of the leg 11 , Between the outside 12 of the lower leg 11 in the picture and the peripheral edge 3 of the tube sheet 4 there is a seal, not shown.
  • the bracket 7 is a proven type of tight connection between the header 1 and the tube sheet 4.
  • connection edge 2 of the collecting tank 1 As is shown in FIG. 2.
  • the connection is an adhesive connection, with a welded or soldered connection being provided for other designs.
  • the connection takes place between the outside 15 of the upper leg 9 of the border 6 in the picture and the connecting edge 2 of the collecting tank 1 .
  • corresponding projections and depressions can be incorporated in the connection surface. For example, a circumferential groove and a matching rib.
  • the baffle plate 5 has within the border 6 aerodynamically shaped transverse webs 20 and in the middle also a longitudinal web 21.
  • the webs 20, 21 of the flat tubes 19 arranged at the ends ind.
  • the present heat exchanger has two rows of pipes which are arranged one behind the other in the direction of the depth of the heat exchanger. There is a gap between the two rows. In the exemplary embodiment shown, this distance is filled by the longitudinal web 21 arranged within the border 6 of the flow guide plate 5 , which of course also has a streamlined shape.
  • the webs 20, 21 are also provided towards the tube plate 4 with suitable insertion bevels so that they nestle well between the flat tube ends when the collecting tank 1 is placed on the tube plate 4 .
  • the cross section of the border 6 of the flow guide plate 5 can be clearly seen. It represents an outwardly open profile 8 , which consists of two legs 9 and 11 , which are connected by means of a wall. The legs 9 and 11 face outwards.
  • the profile 8 is designed with the same design over the entire circumference. In other exemplary embodiments, not shown, it is only in sections that a profile is open to the outside, namely only in the sections where the projections 10 or the clamps are arranged on the peripheral edge 3 of the tube sheet 4 . This makes it possible for the bent projections 10 to rest.
  • the cross section of the border 6 can be, for example, rectangular or square between the sections. The design and spacing of the projections 10 shown can only be seen as an example.
  • FIGS. 7 and 8 show that the webs 20, 21 can of course also be arranged lying between the ends of the flat tubes 19 or also on the tube sheet 4 .
  • the webs 20, 21 are designed with corresponding insertion bevels.
  • the legs 9 and 11 have a different cross section, since the lower leg 11 was formed with a thickening with which it can be inserted into the edge 3 , while the upper leg 9 in the picture for the technical connection to the edge 2 of the collecting box 1 is made significantly weaker.
  • this is not a condition, but a measure adapted to the individual case.
  • both legs 9, 11 can have the same cross section.
  • the edge 3 of the tube sheet does not have to be a relatively deep channel, as is the case in the exemplary embodiment shown, but it can lie in the plane of the tube sheet 4 .

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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)
  • Separation By Low-Temperature Treatments (AREA)
  • Making Paper Articles (AREA)

Abstract

The heat transfer unit has a storage box (1) with its connecting edge (2) at the peripheral edge of a pipe base. A flow guide plate (5) of metal or injection molded plastics, parallel to the pipe base, has an edge (6) around it which is structured to give either a mechanical fastening to the storage box at the pipe base by a clip, or a bonding by soldering or welding or an adhesive. The guide plate edge cross section is a profile (8) at least partially open outwards, in a U-shape where one leg (9) links with the box edge at its outer surface, and the other leg (11) is attached to the peripheral edge of the pipe base at its outer surface.

Description

Die Erfindung betrifft einen Wärmeübertrager mit Sammelkasten, dessen Verbindungsrand sich am umlaufenden Rand eines Rohrbodens erstreckt und der parallel zum Rohrboden eine Strömungsleitplatte aufweist, deren Umrandung zwischen dem Verbindungsrand des Sammelkastens und dem umlaufenden Rand des Rohrbodens angeordnet ist. Außerdem betrifft die Erfindung ein Herstellungsverfahren für den Wärmeübertrager.The invention relates to a heat exchanger with a collecting box, the connecting edge extends on the circumferential edge of a tube sheet and the parallel to the tube sheet has a flow guide plate, the border between the Connection edge of the collecting tank and the peripheral edge of the tube sheet is arranged. The invention also relates to a production method for the Heat exchanger.

Der beschriebene Wärmeübertrager ist aus der DE 199 62 861 A1 und aus anderen Dokumenten bekannt. Die Strömungsleitplatte dient der Reduzierung des Druckverlustes beim Ein - oder Ausströmen des Mediums aus den Rohren des Wärmeübertragers in den Sammelkasten oder aus dem Sammelkasten in die Wärmetauscherrohre. In der DE 199 62 861 A1 wird die aus Metall oder Kunststoff bestehende Strömungsleitplatte am Rohrboden aufgelötet oder aufgeklebt. Eine weitere Strömungsleitplatte, die als Umlenkplatte bezeichnet wurde, ist aus der DE 100 57 190 A1 bekannt.
Die Herstellung solcher Wärmeübertrager ist zum Teil schwierig, weil die Strömungsleitplatte bei der Montage des Wärmeübertragers auf den Rohrboden als Einzelteil aufgesetzt und in geeigneter Weise gehalten werden muss, um ihre Position zu behalten.The heat exchanger described is known from DE 199 62 861 A1 and from other documents. The flow guide plate serves to reduce the pressure loss when the medium flows in or out of the tubes of the heat exchanger into the header box or from the header box into the heat exchanger tubes. In DE 199 62 861 A1, the flow guide plate made of metal or plastic is soldered or glued to the tube sheet. Another flow guide plate, which has been referred to as a deflection plate, is known from DE 100 57 190 A1.
The production of such heat exchangers is difficult in part because the flow guide plate has to be placed on the tube sheet as an individual part when the heat exchanger is installed and must be held in a suitable manner in order to keep its position.

Die Aufgabe der Erfindung besteht darin, den Wärmetauscher und dessen Herstellung zu verbessern und weiterführende Optionen zu offerieren.The object of the invention is the heat exchanger and its manufacture to improve and to offer further options.

Die erfindungsgemäße Lösung wird durch die Merkmale aus dem Anspruch 1 erreicht. Das Herstellungsverfahren ist Gegenstand des Ansprüche 5 oder 6.The solution according to the invention is achieved by the features from claim 1. The manufacturing process is the subject of claims 5 or 6.

Es ist vorgesehen, die Umrandung der Strömungsleitplatte so auszubilden, dass sie entweder eine mechanische Befestigung des Sammelkastens am Rohrboden mittels Verklammerung oder eine fügetechnische Verbindung mittels Löten, Schweißen oder Kleben gestattet, wobei der Querschnitt der Umrandung zumindest abschnittsweise ein nach außen offenes Profil ist.
Mit einer solchen Ausbildung der Strömungsplatte wird es möglich, sowohl Sammelkästen aus Kunststoff zu verwenden, die mit dem umlaufenden Rand des Rohrbodens aus Metall verklammert sind, wobei die Strömungsplatte ebenfalls ein Teil aus Kunststoff ist, als auch Sammelkästen aus Aluminium einzusetzen, die mit dem umlaufenden Rand des Rohrbodens verschweißt oder verlötet sind, wobei in diesem Fall die Strömungsplatte ein Teil aus Metall ist, das am Verbindungsrand des Sammelkastens angeschweißt oder angelötet wird. Die Strömungsplatte ist in an sich bekannter Weise als Spritzgussteil aus Kunststoff herstellbar. Sie kann auch als Druckgussteil oder aus einem Blechteil aus Aluminium mittels Umformung hergestellt werden. Die Erfinder haben der Strömungsleitplatte eine zusätzliche Befestigungsfunktion verliehen und damit deren Anwendung wesentlich erweitert.
Der Querschnitt der Umrandung ist vorzugsweise ein nach außen offenes "U", wobei der eine Schenkel des "U" mit seiner Außenseite mit dem Verbindungsrand des Sammelkastens kommuniziert und der andere Schenkel des "U" mit seiner Außenseite mit dem umlaufenden Rand des Rohrbodens kommuniziert, wobei im Fall der Verklammerung zwischen der zuletzt genannten Außenseite und dem umlaufenden Rand des Rohrbodens eine an sich bekannte Dichtung eingefügt ist.
Vorzugsweise ist die erfinderische Lehre zur Anwendung bei Kunststoffkästen gedacht, wobei die Umrandung der aus Kunststoff bestehenden Strömungsleitplatte zunächst mit dem Verbindungsrand des Sammelkastens verklebt oder verschweißt wird und danach wird der Sammelkasten mit der Umrandung in den umlaufenden Rand des Rohrbodens gesetzt, um anschließend die Klammern der Verklammerung, die vorzugsweise am umlaufenden Rand des Rohrbodens angeordnet sind, nach innen umzulegen, wobei die umgebogenen Klammern auf der Innenseite des anderen Schenkels des "U" aufliegen.
Die innerhalb der Umrandung angeordneten strömungsgünstig geformten Stege müssen nicht zusätzlich gehalten oder befestigt werden, um ihre Position an den Enden der Flachrohre auch unter Betriebsbedingungen zu behalten, wie es bei einigen Lösungen aus dem Stand der Technik erforderlich ist. Die Positionierung wird mit der Verbindung der Strömungsleitplatte am Sammelkasten und des Sammelkastens am Rohrboden garantiert. Die Strömungsleitplatte ermöglicht es, die vorwiegend löttechnische Verbindung der Enden der Flachrohre in den Öffnungen im Rohrboden so auszuführen, wie es unter fertigungstechnischen Gesichtspunkten am vorteilhaftesten ist. Die Senkung des Druckverlustes auf das erforderliche Niveau wird durch den Einsatz der Strömungsleitplatte erreicht. Dabei können die Stege entweder zwischen den Enden der Flachrohre angeordnet sein und auf dem Rohrboden aufliegen oder bereits unmittelbar oberhalb der Enden der Flachrohre enden. Im erstgenannten Fall sollten die Stege mit Einführungsschrägen nach unten zum Rohrboden hin ausgerüstet sein, um das Einsetzen zu erleichtern.It is envisaged to design the border of the flow guide plate such that it either allows the header tank to be mechanically fastened to the tube sheet by means of clipping or a technical connection by means of soldering, welding or gluing, the cross section of the border being, at least in sections, an open profile.
With such a design of the flow plate, it is possible to use both plastic collection boxes, which are clamped to the circumferential edge of the metal tube sheet, the flow plate also being a part made of plastic, and aluminum collection boxes, which are connected to the circumferential one Edge of the tube sheet are welded or soldered, in which case the flow plate is a part made of metal, which is welded or soldered to the connecting edge of the header box. The flow plate can be produced in a manner known per se as an injection molded part made of plastic. It can also be produced as a die-cast part or from a sheet metal part made of aluminum by means of forming. The inventors have given the flow guide plate an additional fastening function and thus significantly expanded its use.
The cross section of the border is preferably an "U" open to the outside, one side of the "U" communicating with its outside with the connecting edge of the collecting tank and the other side of the "U" with its outside communicating with the circumferential edge of the tube sheet, where in the case of the clamping between the last-mentioned outside and the peripheral edge of the tube sheet, a seal known per se is inserted.
The inventive teaching is preferably intended for use in plastic boxes, the border of the flow guide plate consisting of plastic being first glued or welded to the connecting edge of the collecting box and then the collecting box with the border being placed in the peripheral edge of the tube sheet, in order to subsequently clamp the Fold the clamps, which are preferably arranged on the circumferential edge of the tube sheet, inwards, the bent clamps resting on the inside of the other leg of the "U".
The aerodynamically shaped webs arranged within the border do not have to be additionally held or fastened in order to maintain their position at the ends of the flat tubes even under operating conditions, as is required with some solutions from the prior art. Positioning is guaranteed with the connection of the flow guide plate on the header and the header on the tube plate. The flow guide plate makes it possible to carry out the predominantly soldering connection of the ends of the flat tubes in the openings in the tube sheet in the manner which is most advantageous from the point of view of production technology. The pressure drop is reduced to the required level by using the flow guide plate. The webs can either be arranged between the ends of the flat tubes and rest on the tube plate or end directly above the ends of the flat tubes. In the former case, the webs should be equipped with lead-in chamfers down to the tube plate to make insertion easier.

Gemäß dem erfindungsgemäßen Herstellungsverfahren ist bei einer ersten Variante vorgesehen, dass zunächst die Strömungsleitplatte mit ihrer Umrandung am Verbindungsrand des Sammelkastens mittels einer Fügeverbindung befestigt wird und danach wird der Sammelkasten mit der Umrandung der Strömungsleitplatte in den umlaufenden Rand des Rohrbodens gesetzt und mittels einer Fügeverbindung oder einer Verklammerung verbunden. Bei diesem Verfahren sind der Sammelkasten und die Strömungsleitplatte vorzugsweise aus Kunststoff gefertigt.According to the manufacturing method according to the invention there is a first variant provided that the flow guide plate with its border at the connection edge the collecting box is attached by means of a joint and then the collection box with the border of the flow guide plate in the rotating Edge of the tube sheet and by means of a joint or Parenthesis connected. In this process, the collection box and the flow guide plate is preferably made of plastic.

Bei einer zweiten Variante, die insbesondere für Strömungsleitplatten aus Metall vorgesehen ist, wird die Strömungsleitplatte mit ihrer Umrandung zunächst am umlaufenden Rand des Rohrbodens befestigt, beispielsweise bei beim Lötprozess des Wärmeübertragers gleich mit angelötet und danach wird der Sammelkasten mit seinem Verbindungsrand an die Umrandung der Strömungsleitplatte angeschlossen, wobei dieser Anschluss bei Sammelkästen aus Kunststoff eine mechanische Verbindung ist. Bei Sammelkästen aus Metall kann aber auch beispielsweise eine Schweißverbindung in Frage kommen.In a second variant, which is intended in particular for flow guide plates made of metal is, the flow guide plate with its border is initially on the circumferential Fixed edge of the tube sheet, for example during the soldering process Heat exchanger also soldered and then the collection box with his Connecting edge connected to the edge of the flow guide plate, this connection is a mechanical connection for plastic collection boxes is. In the case of metal collecting boxes, however, one can also be used, for example Welded connections come into question.

Weitere Merkmale befinden sich in den Ansprüchen oder ergeben sich aus der nachfolgenden Beschreibung der beiliegenden Figuren eines Ausführungsbeispiels. Die Figuren zeigen Folgendes:

Fig. 1
perspektivische Ansicht auf den Sammelkasten und die Strömungsleitplatte;
Fig.2
perspektivische Ansicht auf einen Sammelkasten mit angefügter Strömungsleitplatte;
Fig. 3
Vorderansicht des Sammelkastens mit Strömungsleitplatte am Rohrboden verbunden;
Fig. 4
Draufsicht auf Strömungsleitplatte;
Fig. 5,
6 Schnitt C-C aus Fig. 3 in einer ersten Ausführung;
Fig. 7,
8 Schnitt C-C in abgewandelter Ausführung;
Further features are in the claims or result from the following description of the attached figures of an embodiment. The figures show the following:
Fig. 1
perspective view of the collection box and the flow guide plate;
Fig.2
perspective view of a collection box with attached flow guide plate;
Fig. 3
Front view of the header box connected to the flow guide plate on the tube sheet;
Fig. 4
Top view of flow guide plate;
Fig. 5,
6 section CC from FIG. 3 in a first embodiment;
Fig. 7
8 CC section in a modified version;

Der Wärmeübertrager ist ein Ladeluftkühler für Kraftfahrzeuge. Auf der nicht gezeigten gegenüberliegenden Seite des Wärmeübertragers ist ein zweiter Sammelkasten 1 angeordnet, der identisch mit der gezeigten Anordnung sein kann. Im gezeigten Ausführungsbeispiel sind der Sammelkasten 1 und die Strömungsleitplatte 5 aus Kunststoff im Spritzgussverfahren hergestellt worden. Der Rohrboden 4 ist aus Metall und besitzt einen umlaufenden Rand 3, der zur mechanischen Verbindung in an sich bekannter Weise mit Vorsprüngen 10 ausgerüstet ist, die in Fig. 3 bereits umgebogen wurden, so dass die Vorsprünge 10 auf der Innenseite 13 des Schenkels 11 aufliegen. Zwischen der Außenseite 12 des im Bild unteren Schenkels 11 und dem umlaufenden Rand 3 des Rohrbodens 4 befindet sich eine nicht gezeigte Dichtung. Somit stellt die Verklammerung 7 eine bewährte Art der dichten Verbindung zwischen dem Sammelkasten 1 und dem Rohrboden 4 dar. Die gleiche Wirkung wird durch eine Verklammerung 7 erzielt, bei der einzelne Klammern verwendet werden, die über die Ränder greifen, wie es aus dem Stand der Technik bekannt ist. Bevor nun jedoch die in Fig. 3 gezeigte fertige Verbindung möglich wird, muss zunächst die Strömungsleitplatte 5 mit dem Verbindungsrand 2 des Sammelkastens 1 verbunden werden, wie das in Fig. 2 gezeigt ist. Die Verbindung ist eine Klebeverbindung, wobei für andere Ausführungen eine Schweiß - oder Lötverbindung vorgesehen wurde. Die Verbindung erfolgt zwischen der Außenseite 15 des im Bild oberen Schenkels 9 der Umrandung 6 und dem Verbindungsrand 2 des Sammelkastens 1. Um diese Verbindung zu vereinfachen können in der Verbindungsfläche korrespondierende Vorsprünge und Vertiefungen eingearbeitet sein. Beispielsweise eine umlaufende Nut und eine dazu passende Rippe. (nicht gezeigt)
Die Strömungsleitplatte 5 besitzt innerhalb der Umrandung 6 strömungsgünstig geformte Querstege 20 und in der Mitte auch einen Längssteg 21. Die Stege 20, 21 ind an den Enden der Flachrohre 19 angeordnet. Es wird auf die DE 100 57 190 A1 verwiesen, die auch bezüglich anderer Merkmale als an dieser Stelle gezeigt und beschrieben angesehen werden soll. Im Unterschied zum Wärmeübertrager in der genannten DE '190 A1 besitzt der vorliegende Wärmeübertrager zwei Rohrreihen, die in Richtung der Tiefe des Wärmeübertragers hintereinander liegend angeordnet sind. Zwischen den zwei Reihen ist ein Abstand vorhanden. Dieser Abstand wird im gezeigten Ausführungsbeispiel durch den innerhalb der Umrandung 6 der Strömungsleitplatte 5 angeordneten Längssteg 21 ausgefüllt, der selbstverständlich ebenfalls eine strömungsgünstige Formgebung aufweist. Die Stege 20, 21 sind ferner zum Rohrboden 4 hin mit geeigneten Einführungsschrägen versehen, damit sie sich beim Aufsetzen des Sammelkastens 1 auf den Rohrboden 4 gut zwischen den Flachrohrenden anschmiegen.The heat exchanger is a charge air cooler for motor vehicles. On the opposite side of the heat exchanger, not shown, a second header box 1 is arranged, which can be identical to the arrangement shown. In the exemplary embodiment shown, the collecting tank 1 and the flow guide plate 5 have been produced from plastic in an injection molding process. The tube sheet 4 is made of metal and has a circumferential edge 3 , which for mechanical connection is equipped in a manner known per se with projections 10 , which have already been bent over in FIG. 3, so that the projections 10 rest on the inside 13 of the leg 11 , Between the outside 12 of the lower leg 11 in the picture and the peripheral edge 3 of the tube sheet 4 there is a seal, not shown. Thus, the bracket 7 is a proven type of tight connection between the header 1 and the tube sheet 4. The same effect is achieved by a bracket 7 , in which individual clips are used, which grip over the edges, as it is from the prior art Technology is known. However, before the finished connection shown in FIG. 3 becomes possible, the flow guide plate 5 must first be connected to the connection edge 2 of the collecting tank 1 , as is shown in FIG. 2. The connection is an adhesive connection, with a welded or soldered connection being provided for other designs. The connection takes place between the outside 15 of the upper leg 9 of the border 6 in the picture and the connecting edge 2 of the collecting tank 1 . In order to simplify this connection, corresponding projections and depressions can be incorporated in the connection surface. For example, a circumferential groove and a matching rib. (Not shown)
The baffle plate 5 has within the border 6 aerodynamically shaped transverse webs 20 and in the middle also a longitudinal web 21. The webs 20, 21 of the flat tubes 19 arranged at the ends ind. Reference is made to DE 100 57 190 A1, which is also to be viewed and described with regard to features other than those described here. In contrast to the heat exchanger in the cited DE '190 A1, the present heat exchanger has two rows of pipes which are arranged one behind the other in the direction of the depth of the heat exchanger. There is a gap between the two rows. In the exemplary embodiment shown, this distance is filled by the longitudinal web 21 arranged within the border 6 of the flow guide plate 5 , which of course also has a streamlined shape. The webs 20, 21 are also provided towards the tube plate 4 with suitable insertion bevels so that they nestle well between the flat tube ends when the collecting tank 1 is placed on the tube plate 4 .

In den Fig. 5 bis 8 ist der Querschnitt der Umrandung 6 der Strömungsleitplatte 5 deutlich zu erkennen. Er stellt ein nach außen offenes Profil 8 dar, das aus zwei Schenkeln 9 und 11 besteht, die mittels einer Wand verbunden sind. Die Schenkel 9 und 11 weisen nach außen. In den Ausführungsbeispielen ist das Profil 8 am gesamten Umfang mit gleich bleibender Gestaltung ausgebildet. In anderen nicht gezeigten Ausführungsbeispielen handelt es sich nur abschnittsweise um ein nach außen offenes Profil, nämlich nur in den Abschnitten, wo die Vorsprünge 10 oder die Klammern am umlaufenden Rand 3 des Rohrbodens 4 angeordnet sind. Dadurch wird das Anliegen der umgebogenen Vorsprünge 10 ermöglicht. Zwischen den Abschnitten kann der Querschnitt der Umrandung 6 beispielsweise rechteckig oder quadratisch ausgebildet sein. Die gezeigte Ausbildung und Beabstandung der Vorsprünge 10 ist lediglich exemplarisch anzusehen. Wesentlich ist, dass die Vorsprünge 10 nach innen verformt werden können und an der Umrandung 6 ein Widerlager finden. In den Fig. 5 und 6 ist gezeigt, dass die Stege 20, 21 der Strömungsleitplatte 5 dicht oberhalb der Enden der Flachrohre 19 angeordnet sind. Damit wird die den Druckverlust reduzierende Wirkung in ausreichendem Maß erreicht und es entfällt beim Einsetzen des Sammelkastens 1 mit der bereits angeschlossenen Strömungsleitplatte 5 das Einfügen der Stege 20, 21 in die entsprechenden Zwischenräume zwischen den Rohrenden. Im Gegensatz dazu ist in den Fig. 7 und 8 gezeigt, dass die Stege 20, 21 natürlich auch zwischen den Enden der Flachrohre 19 oder auch auf dem Rohrboden 4 aufliegend angeordnet sein können. Dazu ist es von Vorteil, wenn die Stege 20, 21 mit entsprechenden Einführschrägen ausgebildet sind.
Die Schenkel 9 und 11 haben im gezeigten Ausführungsbeispiel, bei dem eine mechanische Verbindung am Rand 3 des Rohrbodens 4 vorgesehen ist, einen unterschiedlichen Querschnitt, da der untere Schenkel 11 mit einer Verdickung ausgebildet wurde, mit der er in den Rand 3 eingesetzt werden kann, während der im Bild obere Schenkel 9 zur fügetechnischen Verbindung mit dem Rand 2 des Sammel - kastens 1 deutlich schwächer ausgebildet ist. Dies ist jedoch keine Bedingung sondern eine an den Einzelfall angepaßte Maßnahme. Ist beispielsweise auch zwischen dem Rand 3 des Rohrbodens 4 und dem unteren Schenkel 11 der Umrandung 6 eine fügetechnische Verbindung erwünscht, (nicht gezeigt) können beide Schenkel 9, 11 gleichen Querschnitt aufweisen. In diesem Fall muss der Rand 3 des Rohrbodens keine relativ tiefe Rinne sein, wie es im gezeigten Ausführungsbeispiel der Fall ist, sondern er kann in der Ebene der Rohrbodens 4 liegen.5 to 8, the cross section of the border 6 of the flow guide plate 5 can be clearly seen. It represents an outwardly open profile 8 , which consists of two legs 9 and 11 , which are connected by means of a wall. The legs 9 and 11 face outwards. In the exemplary embodiments, the profile 8 is designed with the same design over the entire circumference. In other exemplary embodiments, not shown, it is only in sections that a profile is open to the outside, namely only in the sections where the projections 10 or the clamps are arranged on the peripheral edge 3 of the tube sheet 4 . This makes it possible for the bent projections 10 to rest. The cross section of the border 6 can be, for example, rectangular or square between the sections. The design and spacing of the projections 10 shown can only be seen as an example. It is essential that the projections 10 can be deformed inwards and find an abutment on the border 6 . 5 and 6 show that the webs 20, 21 of the flow guide plate 5 are arranged just above the ends of the flat tubes 19 . The effect of reducing the pressure loss is thus achieved to a sufficient extent and there is no need to insert the webs 20, 21 into the corresponding spaces between the pipe ends when inserting the collecting tank 1 with the flow guide plate 5 already connected. In contrast to this, FIGS. 7 and 8 show that the webs 20, 21 can of course also be arranged lying between the ends of the flat tubes 19 or also on the tube sheet 4 . For this purpose, it is advantageous if the webs 20, 21 are designed with corresponding insertion bevels.
In the exemplary embodiment shown, in which a mechanical connection is provided at the edge 3 of the tube sheet 4 , the legs 9 and 11 have a different cross section, since the lower leg 11 was formed with a thickening with which it can be inserted into the edge 3 , while the upper leg 9 in the picture for the technical connection to the edge 2 of the collecting box 1 is made significantly weaker. However, this is not a condition, but a measure adapted to the individual case. If, for example, a joining connection is also desired between the edge 3 of the tube sheet 4 and the lower leg 11 of the border 6 (not shown), both legs 9, 11 can have the same cross section. In this case, the edge 3 of the tube sheet does not have to be a relatively deep channel, as is the case in the exemplary embodiment shown, but it can lie in the plane of the tube sheet 4 .

Claims (6)

Wärmeübertrager mit Sammelkasten (1), dessen Verbindungsrand (2) sich am umlaufenden Rand (3) eines Rohrbodens (4) erstreckt und der parallel zum Rohrboden (4) eine Strömungsleitplatte (5) mit einer Umrandung (6) aufweist, wobei die Umrandung (6) zwischen dem Verbindungsrand (2) des Sammelkastens (1) und dem umlaufenden Rand (3) des Rohrbodens (4) angeordnet ist,
dadurch gekennzeichnet, dass
die Umrandung (6) der Strömungsleitplatte (5) so ausgebildet ist, dass sie entweder eine mechanische Befestigung des Sammelkastens (1) am Rohrboden (4) mittels Verklammerung (7) oder eine fügetechnische Verbindung mittels Löten, Schweißen oder Kleben gestattet, wobei die Umrandung (6) im Querschnitt zumindest abschnittsweise ein nach außen offenes Profil (8) ist.Heat exchanger with collecting tank (1), the connecting edge (2) of which extends on the peripheral edge (3) of a tube sheet (4) and which has a flow guide plate (5) with a border (6) parallel to the tube sheet (4), the border ( 6) is arranged between the connecting edge (2) of the collecting tank (1) and the peripheral edge (3) of the tube sheet (4),
characterized in that
the border (6) of the flow guide plate (5) is designed such that it allows either a mechanical attachment of the header tank (1) to the tube sheet (4) by means of clamping (7) or a technical connection by means of soldering, welding or gluing, the border (6) in cross section, at least in sections, is an outwardly open profile (8). Wärmeübertrager nach Anspruch 1, dadurch gekennzeichnet, dass der Querschnitt der Umrandung (6) vorzugsweise ein nach außen offenes "U" darstellt, wobei der eine Schenkel (9) des "U" mit seiner Außenseite (15) mit dem Verbindungsrand (2) des Sammelkastens (1) kommuniziert und der andere Schenkel (11) des "U" mit seiner Außenseite (12) mit dem umlaufenden Rand (3) des Rohrbodens (4) kommuniziert.Heat exchanger according to claim 1, characterized in that the cross section of the border (6) preferably represents an outwardly open "U", the one leg (9) of the "U" with its outside (15) with the connecting edge (2) of the Collecting box (1) communicates and the other leg (11) of the "U" with its outside (12) communicates with the peripheral edge (3) of the tube sheet (4). Wärmeübertrager nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Klammern der Verklammerung (7) am umlaufenden Rand (3) des Rohrbodens (4) angeordnete Vorsprünge (10) sind, die nach innen umbiegbar sind und auf der Innenseite (13) des anderen Schenkels (11) des "U" aufliegen.Heat exchanger according to claims 1 and 2, characterized in that the clamps of the clamp (7) on the circumferential edge (3) of the tube sheet (4) are projections (10) which can be bent inwards and on the inside (13) of the rest other leg (11) of the "U". Wärmeübertrager nach den vorstehenden Ansprüchen, dadurch gekennzeichnet, dass die Umrandung (6) strömungsgünstig geformte Stege (20, 21) umfaßt, die sich einstückig innen an die Umrandung (6) anschließen und die zwischen den Flachrohrenden entweder oberhalb der Flachrohrenden enden oder sich in den Zwischenraum zwischen den Flachrohrenden erstrecken.Heat exchanger according to the preceding claims, characterized in that the border (6) comprises streamlined webs (20, 21) which connect integrally on the inside to the border (6) and which either end above the flat tube ends or end in the Extend the space between the flat tube ends. Verfahren zur Herstellung eines Wärmeübertragers mit einem Sammelkasten (1), bei dem der Sammelkasten (1) mit seinem Verbindungsrand (2) unter Zwischenfügung einer Strömungsleitplatte (5) mit einer Umrandung (6) am umlaufenden Rand (3) eines Rohrbodens (4) verbunden wird,
dadurch gekennzeichnet, dass
die Strömungsleitplatte (5) mit ihrer Umrandung (6) am Verbindungsrand (2) des Sammelkastens (1) mittels einer Fügeverbindung befestigt wird und der Sammelkasten (1) mit der Umrandung (6) der Strömungsleitplatte (5) an den umlaufenden Rand (3) des Rohrbodens (4) gesetzt und mittels einer Fügeverbindung oder einer Verklammerung verbunden wird.Method for producing a heat exchanger with a collecting box (1), in which the collecting box (1) is connected with its connecting edge (2) with the interposition of a flow guide plate (5) with a border (6) on the peripheral edge (3) of a tube sheet (4) becomes,
characterized in that
the flow guide plate (5) with its border (6) is attached to the connecting edge (2) of the collecting tank (1) by means of a joint connection and the collecting box (1) with the border (6) of the flow guide board (5) to the peripheral edge (3) of the tube sheet (4) is set and connected by means of a joint or a clamp. Verfahren zur Herstellung eines Wärmeübertragers mit einem Sammelkasten (1), bei dem der Sammelkasten (1) mit seinem Verbindungsrand (2) unter Zwischenfügung einer Strömungsleitplatte (5) mit einer Umrandung (6) am umlaufenden Rand (3) eines Rohrbodens (4) verbunden wird,
dadurch gekennzeichnet, dass
die Strömungsleitplatte (5) mit ihrer Umrandung (6) zunächst am umlaufenden Rand (3) des Rohrbodens (4) in bekannter Art befestigt und danach der Sammelkasten (1) mit seinem Verbindungsrand (2) an der Umrandung (6) der Strömungsleitplatte (5) mechanisch verbunden wird.Method for producing a heat exchanger with a collecting box (1), in which the collecting box (1) is connected with its connecting edge (2) with the interposition of a flow guide plate (5) with a border (6) on the peripheral edge (3) of a tube sheet (4) becomes,
characterized in that
the flow guide plate (5) with its border (6) is first attached to the circumferential edge (3) of the tube sheet (4) in a known manner and then the collecting box (1) with its connecting edge (2) on the border (6) of the flow guide plate (5 ) is mechanically connected.
EP03015346A 2002-07-27 2003-07-08 Heat exchanger and associated process of fabricating Expired - Fee Related EP1384968B1 (en)

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DE10234272A DE10234272A1 (en) 2002-07-27 2002-07-27 Heat exchangers and manufacturing processes

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FR2927413A1 (en) * 2008-02-13 2009-08-14 Valeo Systemes Thermiques Collecting box for e.g. radiator, of motor vehicle, has sealing joint forming bi-material layer such that joint occupies approximately fifty percentage of space between protruding ends of tubes and collecting plate
WO2010000753A1 (en) * 2008-07-01 2010-01-07 Valeo Systemes Thermiques Vortex breaking means for heat exchanger collecting plate
WO2011120977A2 (en) 2010-03-31 2011-10-06 Valeo Systemes Thermiques Heat exchanger having enhanced performance

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DE102006028143A1 (en) * 2006-06-16 2007-12-20 Behr Gmbh & Co. Kg heat exchangers
DE102007008536A1 (en) * 2007-02-21 2008-08-28 Modine Manufacturing Co., Racine heat exchangers
DE102012010340A1 (en) * 2012-05-25 2013-11-28 Gm Global Technology Operations, Llc Air box for arrangement at e.g. inlet of intercooler in front of radiator core for cooling charging air of supercharged engine in passenger car, has insert arranged exhibiting shape such that optimized flow of air is provided through box
DE102015209209A1 (en) * 2015-05-20 2016-11-24 Mahle International Gmbh Intercooler
DE102015209210A1 (en) 2015-05-20 2016-11-24 Mahle International Gmbh Intercooler

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DE19962861A1 (en) * 1999-12-24 2001-06-28 Behr Gmbh & Co Heat transfer device for charge air for vehicles, with flow guide plate parallel to tube bottom of air outlet collection chamber
DE10057190A1 (en) * 2000-11-17 2002-05-23 Modine Mfg Co Heat exchanger

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Publication number Priority date Publication date Assignee Title
FR2927413A1 (en) * 2008-02-13 2009-08-14 Valeo Systemes Thermiques Collecting box for e.g. radiator, of motor vehicle, has sealing joint forming bi-material layer such that joint occupies approximately fifty percentage of space between protruding ends of tubes and collecting plate
FR2927415A1 (en) * 2008-02-13 2009-08-14 Valeo Systemes Thermiques ANTI-VORTEX MEANS FOR HEAT EXCHANGER COLLECTOR PLATE
WO2010000753A1 (en) * 2008-07-01 2010-01-07 Valeo Systemes Thermiques Vortex breaking means for heat exchanger collecting plate
WO2011120977A2 (en) 2010-03-31 2011-10-06 Valeo Systemes Thermiques Heat exchanger having enhanced performance
US9366487B2 (en) 2010-03-31 2016-06-14 Valeo Systemes Thermiques Heat exchanger having enhanced performance

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EP1384968B1 (en) 2010-05-19
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ATE468520T1 (en) 2010-06-15

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