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EP1910764B2 - Plate element for a plate cooler - Google Patents
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EP1910764B2 - Plate element for a plate cooler - Google Patents

Plate element for a plate cooler Download PDF

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Publication number
EP1910764B2
EP1910764B2 EP06776149.4A EP06776149A EP1910764B2 EP 1910764 B2 EP1910764 B2 EP 1910764B2 EP 06776149 A EP06776149 A EP 06776149A EP 1910764 B2 EP1910764 B2 EP 1910764B2
Authority
EP
European Patent Office
Prior art keywords
plate element
plate
openings
profiling
plane
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.)
Not-in-force
Application number
EP06776149.4A
Other languages
German (de)
French (fr)
Other versions
EP1910764A1 (en
EP1910764B9 (en
EP1910764B1 (en
Inventor
Jens Richter
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Mahle Behr GmbH and Co KG
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Application filed by Mahle Behr GmbH and Co KG filed Critical Mahle Behr GmbH and Co KG
Publication of EP1910764A1 publication Critical patent/EP1910764A1/en
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Publication of EP1910764B2 publication Critical patent/EP1910764B2/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element

Definitions

  • the present invention relates to a plate element for a plate cooler and a plate cooler, comprising a plurality of identical plate elements.
  • Plate coolers are known from the prior art, in which a number of mostly identical, alternately arranged plate elements are arranged one above the other, two separate systems being formed by chambers, a first heat-transferring medium through one chamber system and a second medium through the other chamber system flows.
  • a first heat-transferring medium through one chamber system
  • a second medium through the other chamber system flows.
  • DE 199 39 264 A1 describes a plate-type heat exchanger in a stacked design, in which a plurality of identical plate elements are fixed to one another and soldered to one another along a conical outer edge.
  • the plate elements each have four substantially circular openings within a base region of the plate element, two of the circular openings each having a protruding edge.
  • Each of the cantilevered edges is spaced from the outer edge.
  • This shape in particular the base surface running between the side wall and the second opening edge, makes it easy to ensure that a particularly small proportion of heat-carrying medium is present in a low-flow area of a plate cooler. Areas between the outer edge of the plate cooler and media openings which are particularly unfavorable with regard to the media flow are reduced or eliminated, so that the media mainly between the
  • Openings and thus in its main flow areas is present. Overall, the same exchanger performance can be achieved with a smaller media volume in the plate cooler. As a result, a plate cooler can be made lighter and smaller overall.
  • the plate element can be connected to a second, identical plate element, the connected arrangement being essentially flat against the base surface of the plate element of the second plate element.
  • the structurally identical design of the second plate element enables a particularly economical production of a plate cooler.
  • the plate element is preferably soldered flat to the second plate element at least in the area of the flat system.
  • essentially linear soldering known from the prior art, which is provided by the one-dimensional design of the edges in principle, a much larger contact area of adjacent plate elements of a plate cooler can be soldered in a plate element according to the invention, so that overall a particularly large one Strength and a particularly large long-term stability against cracks and occurring leaks is given.
  • the openings have a shape which extends in a longitudinal direction and deviates from a circular shape.
  • the medium it is easily possible for the medium to flow through a plate cooler consisting of plate elements according to the invention in a particularly wide area.
  • a secure connection of plate elements with a shape of the openings deviating from a circular shape is given, in particular, in the case of the aforementioned flat contact or flat soldering.
  • a plate element according to the invention has a profile, the profile being arranged in a flow path to influence the flow of the medium.
  • a profiling can improve the distribution of the medium flow over the plate element for the purpose of optimizing the exchanger performance.
  • the profiling is preferably formed by embossing or deforming the base of the plate element.
  • the profiling is undulating, with a plurality of contact points of the profilings being present between the profiling of the plate element and the profiling of an identical second plate element which is fixed to the first plate element. This allows a particularly targeted guidance of the medium flow through the profiling.
  • the plate element can be produced overall from a metal plate of constant thickness.
  • the plate element can be formed from the metal plate of constant thickness by methods known per se, for example by deep drawing, drop forging or other methods.
  • the material of the metal plate is preferably an aluminum alloy, in order to enable a lightweight design of a plate cooler.
  • a plate cooler according to the invention comprises a plurality of plate elements of identical construction according to claim 1. This combines the advantages of the shape of the plate element according to the invention with an inexpensive series production of a plate cooler.
  • the plate element according to Fig. 1 comprises a floor level 1 with two openings 2, 3 of a first type opposite each other in the direction of flow of a medium, both of which have an edge 2a, 3a lying in the floor level 1.
  • the first two openings 2, 3 are each elongated, with a longitudinal diameter of the openings 2, 3 being slightly more than 1.5 times a transverse diameter.
  • the flow of the medium takes place perpendicular to the longitudinal direction of the openings 2, 3.
  • the top view of the plate element 1 has a rectangular shape with strongly rounded corners.
  • the two first openings 2, 3 are both arranged on the same long side in the corner regions of the rectangle.
  • two openings 4, 5 of a second type are provided, which have the same shape and opening width as the first openings 2, 3.
  • the edges 4a, 5a of the second openings 4, 5 are not arranged at the level of the floor level 1, but lie in a plane parallel to the floor level 1.
  • base surfaces 6, 7 of the plate element each assigned to the openings 4, 5, which are arranged parallel to the floor plane 1 but offset in the direction of the vertical axis of the plate element.
  • the vertical axis is as in Fig. 6 defined perpendicular to the plane of the drawing.
  • the openings 4, 5 are formed as simple openings in the base surfaces 6, 7. However, they can also have a projection or other deviations from a simple cutout in the base surface.
  • the base surfaces 6, 7 are partially delimited by a respective rounded edge 6a, 7a of the floor level 1 and at the level of the base surfaces 6, 7 partially by a rounded extension 8b of a side wall 8 surrounding the plate element.
  • the side wall 8 completely surrounds the plate element and has one outer edge 8a lying completely in the same plane.
  • This side wall 8 is also not arranged at right angles to the floor level 1, but is inclined slightly outwards, which is why it has an overall conical arrangement. In this way, several plate elements of identical construction can be stacked one inside the other, the outer edge 8a in each case resting against a certain height of the side wall 8 of the next plate element and being soldered to it at this point (see Fig. 4 ).
  • the base surfaces 6, 7 each extend from the extension 8b of the side wall 8 to the edge 4a, 5a of the second openings 4, 5.
  • the extension 8b is not at the same height in the region of the base surfaces 6, 7 as in the region of the base 1 , which is why stages 8c occur in the course of approach 8c.
  • the flat contact of a base surface 6, 7 on the bottom 1 of the subsequent plate element rotated by 180 ° results in a flat soldering which is particularly stable and safe against leakages occurring during the operating time.
  • a plate cooler which comprises a first system A and a second system B of chambers.
  • a first heat-carrying medium for example water and / or glycol, flows through the first system A from one plate opening to the other perpendicular to the plane of the drawing in Fig. 4
  • a second heat-carrying medium for example engine oil, flows through the second system B from one plate opening to the other perpendicular to the plane of the drawing in Fig. 4 .
  • the production of the plate element according to the invention can be done by a conventional forming process, wherein a blank is a simple plate of constant thickness made of an aluminum alloy.
  • the preferred plate element according to 1 to 5 also has a profile 9 of the floor level 1.
  • This profiling essentially comprises a plurality of zigzag or wave-shaped depressions, each of which represents a continuous channel and are embossed into the bottom 1 of the plate element from below.
  • Each of the zigzag channels 9 crosses an imaginary flow path of the medium, which runs from a short side of the plate element to the opposite short side of the plate element.
  • the channels 9 are also positioned so that when stacking identical plate elements there is a large number of crossings of channels 9 of one plate element with channels 9 of the other plate element. At these intersections there are contact points between the adjacent channels 9, which is ensured by appropriate dimensioning of their embossing depth.
  • the plates are preferably soldered to one another at the points of contact.
  • Such turbulence inserts 10 for improving the thermal exchanger performance are known per se from the prior art.

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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)

Description

Die vorliegende Erfindung betrifft ein Plattenelement für einen Plattenkühler sowie einen Plattenkühler, umfassend eine Mehrzahl von baugleichen Plattenelementen.The present invention relates to a plate element for a plate cooler and a plate cooler, comprising a plurality of identical plate elements.

Aus dem Stand der Technik sind Plattenkühler bekannt, bei denen eine Anzahl von zumeist baugleichen, alternierend angeordneten Plattenelementen übereinander angeordnet sind, wobei zwei getrennte Systeme von Kammern gebildet werden, wobei ein erstes wärmeübertragendes Medium durch das eine Kammersystem und ein zweites Medium durch das andere Kammersystem strömt. Allgemein besteht dabei die Problematik, die Strömungswege der Medien innerhalb der Kammern zu optimieren, so dass bei gegebener Baugröße und Plattenanzahl ein möglichst optimaler Wärmetausch zwischen den beiden Medien gegeben ist.Plate coolers are known from the prior art, in which a number of mostly identical, alternately arranged plate elements are arranged one above the other, two separate systems being formed by chambers, a first heat-transferring medium through one chamber system and a second medium through the other chamber system flows. In general, there is the problem of optimizing the flow paths of the media within the chambers, so that, given the size and number of plates, the heat exchange between the two media is as optimal as possible.

DE 199 39 264 A1 beschreibt einen Plattenwärmerübertrager in Stapelbauweise, bei dem eine Mehrzahl identischer Plattenelemente aufeinander festgelegt und entlang eines konischen Außenrandes miteinander verlötet sind. Die Plattenelemente weisen jeweils vier im Wesentlichen kreisrunde Öffnungen innerhalb eines Bodenbereiches des Plattenelementes auf, wobei zwei der kreisrunden Öffnungen jeweils einen abgekragten Rand haben. Jeder der abgekragten Ränder ist zu dem Außenrand beabstandet angeordnet. Bei Stapelung der Plattenelemente ergibt sich in den Bereichen zwischen dem Außenrand und den Abkragungen der Öffnungen ein erhebliches Volumen, in dem sich ein wärmeführendes Medium mit besonders geringer Strömungsgeschwindigkeit befindet. Zum einen wird hierdurch der Wirkungsgrad des Wärmetauschers bei gegebenen Abmessungen ungünstig beeinflußt. Zum anderen ermöglichen solche Bereiche von annähernd stehendem Medium die Ablagerung von mitgeführten Partikeln und die Agglomeration zu großvolumigen Ablagerungen. Ein spontanes Lösen solcher größerer Ablagerungen kann sich schädlich auf ein Gesamtsystem auswirken, beispielsweise wenn der Wärmetauscher ein Ölkühler eines Kraftfahrzeugmotors ist. DE 199 39 264 A1 describes a plate-type heat exchanger in a stacked design, in which a plurality of identical plate elements are fixed to one another and soldered to one another along a conical outer edge. The plate elements each have four substantially circular openings within a base region of the plate element, two of the circular openings each having a protruding edge. Each of the cantilevered edges is spaced from the outer edge. When the plate elements are stacked, there is a considerable volume in the areas between the outer edge and the projections of the openings, in which there is a heat-conducting medium with a particularly low flow rate. On the one hand, the efficiency of the heat exchanger is adversely affected for given dimensions. On the other hand, such areas of approximately standing medium enable the deposition of entrained particles and the agglomeration to form large-volume deposits. Spontaneous removal of such larger deposits can have a detrimental effect on an overall system, for example if the heat exchanger is an oil cooler of a motor vehicle engine.

Es ist die Aufgabe der Erfindung, ein Plattenelement für einen Plattenkühler anzugeben, mittels dessen ein in seinem Wirkungsgrad und seine Ablagerungsresistenz verbesserter Plattenkühler herstellbar ist.It is the object of the invention to provide a plate element for a plate cooler, by means of which a plate cooler which is improved in terms of its efficiency and its resistance to deposition can be produced.

Diese Aufgabe wird für ein eingangs genanntes Plattenelement erfindungsgemäß mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved according to the invention for a plate element mentioned at the outset with the features of claim 1.

Durch diese Formgebung, insbesondere durch die zwischen Seitenwandung und zweitem Öffnungsrand verlaufende Sockelfläche wird auf einfache Weise erreicht, dass ein besonders kleiner Anteil an wärmetragendem Medium in einem strömungsarmen Bereich eines Plattenkühlers vorhanden ist. Insbesondere hinsichtlich der Medienströmung ungünstige Bereiche zwischen Außenrand des Plattenkühlers und Medienöffnungen werden verkleinert oder eliminiert, so daß das Medium hauptsächlich zwischen denThis shape, in particular the base surface running between the side wall and the second opening edge, makes it easy to ensure that a particularly small proportion of heat-carrying medium is present in a low-flow area of a plate cooler. Areas between the outer edge of the plate cooler and media openings which are particularly unfavorable with regard to the media flow are reduced or eliminated, so that the media mainly between the

Öffnungen und somit in seinen Hauptströmungsbereichen vorhanden ist. Insgesamt kann somit eine gleiche Tauscherleistung bei kleinerem im Plattenkühler vorhandenem Medienvolumen erzielt werden. Hierdurch kann ein Plattenkühler insgesamt leichter und kleinbauender ausgebildet werden.Openings and thus in its main flow areas is present. Overall, the same exchanger performance can be achieved with a smaller media volume in the plate cooler. As a result, a plate cooler can be made lighter and smaller overall.

Im Interesse einer einfachen Herstellung eines Plattenkühlers ist das Plattenelement mit einem zweiten, baugleichen Plattenelement verbindbar, wobei in der verbundenen Anordnung eine im Wesentlichen flächige Anlage der Sockelfläche des Plattenelements des zweiten Plattenelement vorliegt. Durch die baugleiche Ausführung des zweiten Plattenelements wird eine besonders wirtschaftliche Fertigung eines Plattenkühlers ermöglicht.In the interest of simple manufacture of a plate cooler, the plate element can be connected to a second, identical plate element, the connected arrangement being essentially flat against the base surface of the plate element of the second plate element. The structurally identical design of the second plate element enables a particularly economical production of a plate cooler.

Weiterhin bevorzugt ist das Plattenelement dabei mit dem zweiten Plattenelement zumindest im Bereich der flächigen Anlage flächig verlötet. Im Gegensatz zu der aus dem Stand der Technik bekannten im Wesentlichen linienförmigen Verlötung, die durch die im Prinzip eindimensionale Ausbildung der Ränder gegeben ist, kann somit bei einem erfindungsgemäßen Plattenelement eine wesentlich größere Kontaktfläche benachbarter Plattenelemente eines Plattenkühlers verlötet sein, so dass insgesamt eine besonders große Festigkeit und eine besonders große Langzeitstabilität gegenüber Rissen und auftretenden Leckagen gegeben ist.Furthermore, the plate element is preferably soldered flat to the second plate element at least in the area of the flat system. In contrast to the essentially linear soldering known from the prior art, which is provided by the one-dimensional design of the edges in principle, a much larger contact area of adjacent plate elements of a plate cooler can be soldered in a plate element according to the invention, so that overall a particularly large one Strength and a particularly large long-term stability against cracks and occurring leaks is given.

Bei einem erfindungsgemäßen Plattenelement weisen die Öffnungen eine sich in einer Längsrichtung erstreckende, von einer Kreisform abweichende Form auf. Hier ist auf einfache Weise ermöglicht, dass das Medium in einem besonders breiten Bereich einen aus erfindungsgemäßen Plattenelementen bestehenden Plattenkühler durchströmt. Eine sichere Verbindung von Plattenelementen mit von einer Kreisform abweichender Form der Öffnungen ist insbesondere bei der vorgenannten flächigen Anlage beziehungsweise flächigen Verlötung gegeben.In a plate element according to the invention, the openings have a shape which extends in a longitudinal direction and deviates from a circular shape. Here it is easily possible for the medium to flow through a plate cooler consisting of plate elements according to the invention in a particularly wide area. A secure connection of plate elements with a shape of the openings deviating from a circular shape is given, in particular, in the case of the aforementioned flat contact or flat soldering.

Ein erfindungsgemäßes Plattenelement weist eine Profilierung auf, wobei die Profilierung in einem Strömungsweg zur Beeinflussung der Strömung des Mediums angeordnet ist. Durch eine solche Profilierung kann die Verteilung des Mediumstromes über das Plattenelement zum Zwecke der Optimierung der Tauscherleistung verbessert werden. Im Interesse einer einfachen Herstellung ist die Profilierung bevorzugt durch Prägung bzw. Verformung des Bodens des Plattenelements ausgebildet.A plate element according to the invention has a profile, the profile being arranged in a flow path to influence the flow of the medium. Such a profiling can improve the distribution of the medium flow over the plate element for the purpose of optimizing the exchanger performance. In the interest of simple manufacture, the profiling is preferably formed by embossing or deforming the base of the plate element.

Dabei ist die Profilierung wellenförmig, wobei zwischen der Profilierung des Plattenelements und der Profilierung eines baugleichen zweiten Plattenelements, welches an dem ersten Plattenelement festgelegt ist, eine Mehrzahl von Berührungsstellen der Profilierungen vorliegen. Hierdurch läßt sich eine besonders gezielte Führung des Mediumstromes durch die Profilierung erreichen.The profiling is undulating, with a plurality of contact points of the profilings being present between the profiling of the plate element and the profiling of an identical second plate element which is fixed to the first plate element. This allows a particularly targeted guidance of the medium flow through the profiling.

Im Interesse einer einfachen Herstellung ist das Plattenelement insgesamt aus einer Metallplatte konstanter Dicke herstellbar. Die Formung des Plattenelements aus der Metallplatte konstanter Dicke kann dabei mittels an sich bekannter Verfahren erfolgen, etwa mittels Tiefziehen, Gesenkschmieden oder anderen Methoden. Das Material der Metallplatte ist bevorzugt eine Aluminiumlegierung, um insgesamt eine leichte Bauweise eines Plattenkühlers zu ermöglichen.In the interest of simple manufacture, the plate element can be produced overall from a metal plate of constant thickness. The plate element can be formed from the metal plate of constant thickness by methods known per se, for example by deep drawing, drop forging or other methods. The material of the metal plate is preferably an aluminum alloy, in order to enable a lightweight design of a plate cooler.

Ein erfindungsgemäßer Plattenkühler umfasst eine Mehrzahl von baugleichen Plattenelementen nach Anspruch 1. Hierdurch werden die Vorteile der Formgebung des erfindungsgemäßen Plattenelements mit einer kostengünstigen Serienfertigung eines Plattenkühlers kombiniert.A plate cooler according to the invention comprises a plurality of plate elements of identical construction according to claim 1. This combines the advantages of the shape of the plate element according to the invention with an inexpensive series production of a plate cooler.

Weitere Vorteile und Merkmale ergeben sich aus dem nachfolgend beschriebenen Ausführungsbeispiel sowie aus den abhängigen Ansprüchen.Further advantages and features result from the exemplary embodiment described below and from the dependent claims.

Nachfolgend wird ein bevorzugtes Ausführungsbeispiel eines erfindungsgemäßen Plattenelements und eines Plattenkühlers beschrieben und anhand der anliegenden Zeichnungen näher erläutert.

Fig. 1
zeigt eine räumliche Ansicht eines erfindungsgemäßen Plattenelements von unten, wobei ein konischer umlaufender Rand in die Zeichnungsebene hineinragt.
Fig. 2
zeigt eine räumliche Ansicht des Plattenelements aus Fig. 1 von oben, wobei der umlaufende Rand aus der Zeichnungsebene herausragt.
Fig. 3
zeigt eine Detailvergrößerung des Plattenelements aus Fig. 1.
Fig. 4
zeigt einen Querschnitt durch vier in alternierender Orientierung aufeinander gestapelter Plattenelemente nach Fig. 1, welche insgesamt einen Teil eines Plattenkühlers ausbilden.
Fig. 5
zeigt eine Detailansicht eines Querschnitts durch ein einzelnes Plattenelement nach Fig. 1.
Fig. 6
zeigt eine Draufsicht auf eine nicht erfindungsgemäße Abwandlung des Plattenelements aus Fig. 1, wobei anstelle von eingeprägten Profilierungen eine separate Turbulenzeinlage vorgesehen ist.
A preferred embodiment of a plate element according to the invention and a plate cooler is described below and explained in more detail with reference to the accompanying drawings.
Fig. 1
shows a spatial view of a plate element according to the invention from below, wherein a conical peripheral edge protrudes into the plane of the drawing.
Fig. 2
shows a spatial view of the plate element Fig. 1 from above, with the surrounding edge protruding from the plane of the drawing.
Fig. 3
shows an enlarged detail of the plate element Fig. 1 .
Fig. 4
shows a cross section through four plate elements stacked in alternating orientation Fig. 1 , which together form part of a plate cooler.
Fig. 5
shows a detailed view of a cross section through a single plate element according to Fig. 1 .
Fig. 6
shows a plan view of a modification of the plate element not according to the invention Fig. 1 , with a separate turbulence insert being provided instead of embossed profiles.

Das Plattenelement gemäß Fig. 1 umfasst eine Bodenebene 1 mit zwei sich in Strömungsrichtung eines Medium gegenüberliegenden Öffnungen 2, 3 eines ersten Typs, welche beide einen in der Bodenebene 1 liegenden Rand 2a, 3a aufweisen. Die beiden ersten Öffnungen 2, 3 sind jeweils länglich ausgebildet, wobei ein Längsdurchmesser der Öffnungen 2, 3 etwas mehr als das 1,5-fache eines Querdurchmessers ausmacht. Die Strömung des Mediums erfolgt senkrecht zu der Längsrichtung der Öffnungen 2, 3. Das Plattenelement 1 weist in der Draufsicht eine rechteckige Form mit stark verrundeten Ecken auf. Die beiden ersten Öffnungen 2, 3 sind beide an der gleichen Längsseite in den Eckbereichen des Rechtecks angeordnet.The plate element according to Fig. 1 comprises a floor level 1 with two openings 2, 3 of a first type opposite each other in the direction of flow of a medium, both of which have an edge 2a, 3a lying in the floor level 1. The first two openings 2, 3 are each elongated, with a longitudinal diameter of the openings 2, 3 being slightly more than 1.5 times a transverse diameter. The flow of the medium takes place perpendicular to the longitudinal direction of the openings 2, 3. The top view of the plate element 1 has a rectangular shape with strongly rounded corners. The two first openings 2, 3 are both arranged on the same long side in the corner regions of the rectangle.

An der gegenüberliegenden Längsseite sind zwei Öffnungen 4, 5 eines zweiten Typs vorgesehen, welche in Form und Öffnungsweite den ersten Öffnungen 2,3 gleichen. Die Ränder 4a, 5a der zweiten Öffnungen 4, 5 sind jedoch nicht in Höhe der Bodenebene 1 angeordnet, sondern liegen in einer zu der Bodenebene 1 parallelen Ebene. Ebenso in dieser Ebene liegen den Öffnungen 4,5 jeweils zugeordnete Sockelflächen 6, 7, des Plattenelements, welche zu der Bodenebene 1 parallel, aber in Richtung der Hochachse des Plattenelements versetzt angeordnet sind. Die Hochachse ist als in Fig. 6 senkrecht zur Zeichenebene definiert. Die Öffnungen 4,5 sind vorliegend als einfache Durchbrechungen der Sockelflächen 6, 7 ausgeformt. Sie können jedoch auch eine Abkragung aufweisen oder andere Abweichungen von einem einfachen Ausschnitt in der Sockelfläche.On the opposite long side, two openings 4, 5 of a second type are provided, which have the same shape and opening width as the first openings 2, 3. However, the edges 4a, 5a of the second openings 4, 5 are not arranged at the level of the floor level 1, but lie in a plane parallel to the floor level 1. Likewise in this plane are base surfaces 6, 7 of the plate element, each assigned to the openings 4, 5, which are arranged parallel to the floor plane 1 but offset in the direction of the vertical axis of the plate element. The vertical axis is as in Fig. 6 defined perpendicular to the plane of the drawing. In the present case, the openings 4, 5 are formed as simple openings in the base surfaces 6, 7. However, they can also have a projection or other deviations from a simple cutout in the base surface.

Die Sockelflächen 6, 7 sind teilweise von einem jeweiligen verrundeten Rand 6a, 7a der Bodenebene 1 begrenzt und auf Höhe der Sockelflächen 6, 7 teilweise von einem verrundeten Ansatz 8b einer das Plattenelement umlaufenden Seitenwandung 8. Die Seitenwandung 8 umläuft das Plattenelement vollständig und weist einen vollständig in der gleichen Ebene liegenden Außenrand 8a auf. Diese Seitenwandung 8 ist zudem nicht rechtwinklig zu der Bodenebene 1 angeordnet, sondern leicht nach außen geneigt, weswegen sie insgesamt eine konische Anordnung hat. Hierdurch werden mehrerer baugleiche Plattenelemente ineinander stapelbar, wobei der Außenrand 8a jeweils auf einer gewissen Höhe der Seitenwandung 8 des nächsten Plattenelements anliegt und an dieser Stelle mit diesem verlötet ist (siehe Fig. 4).The base surfaces 6, 7 are partially delimited by a respective rounded edge 6a, 7a of the floor level 1 and at the level of the base surfaces 6, 7 partially by a rounded extension 8b of a side wall 8 surrounding the plate element. The side wall 8 completely surrounds the plate element and has one outer edge 8a lying completely in the same plane. This side wall 8 is also not arranged at right angles to the floor level 1, but is inclined slightly outwards, which is why it has an overall conical arrangement. In this way, several plate elements of identical construction can be stacked one inside the other, the outer edge 8a in each case resting against a certain height of the side wall 8 of the next plate element and being soldered to it at this point (see Fig. 4 ).

Die Sockelflächen 6, 7 erstrecken sich jeweils von dem Ansatz 8b der Seitenwandung 8 bis zu dem Rand 4a, 5a der zweiten Öffnungen 4, 5. Der Ansatzes 8b liegt im Bereich der Sockelflächen 6, 7 nicht auf gleicher Höhe wie im Bereich des Bodens 1, weshalb Stufen 8c im Verlauf des Ansatzes 8c vorkommen. Wie die gestapelte Darstellung gemäß Fig. 4 verdeutlicht, ergibt die flächige Anlage einer Sockelfläche 6, 7 an dem Boden 1 des nachfolgenden, um 180° verdreht angeordneten Plattenelements eine flächige Verlötung, die besonders stabil und sicher gegenüber während der Betriebsdauer auftretender Leckagen ist.The base surfaces 6, 7 each extend from the extension 8b of the side wall 8 to the edge 4a, 5a of the second openings 4, 5. The extension 8b is not at the same height in the region of the base surfaces 6, 7 as in the region of the base 1 , which is why stages 8c occur in the course of approach 8c. Like the stacked representation according to Fig. 4 clarifies, the flat contact of a base surface 6, 7 on the bottom 1 of the subsequent plate element rotated by 180 ° results in a flat soldering which is particularly stable and safe against leakages occurring during the operating time.

Wie Fig. 4 verdeutlicht, ist durch die alternierende Anordnung und dichtende Verlötung mehrerer Plattenelemente ein Teil eines Plattenkühlers ausgebildet, der ein erstes System A und ein zweites System B von Kammern umfasst. Dabei durchfließt ein erstes wärmetragendes Medium, beispielsweise Wasser und/oder Glykol, das erste System A jeweils von einer Plattenöffnung zur anderen senkrecht zur Zeichnungsebene in Fig. 4, und ein zweites wärmetragendes Medium, beispielsweise Motoröl, durchfließt das zweite System B jeweils von einer Plattenöffnung zur anderen senkrecht zur Zeichnungsebene in Fig. 4.How Fig. 4 clarified, the alternating arrangement and sealing soldering of several plate elements forms part of a plate cooler which comprises a first system A and a second system B of chambers. A first heat-carrying medium, for example water and / or glycol, flows through the first system A from one plate opening to the other perpendicular to the plane of the drawing in Fig. 4 , and a second heat-carrying medium, for example engine oil, flows through the second system B from one plate opening to the other perpendicular to the plane of the drawing in Fig. 4 .

Die Herstellung des erfindungsgemäßen Plattenelements kann durch ein herkömmliches Umformverfahren erfolgen, wobei ein Rohling eine einfache Platte konstanter Dicke aus einer Aluminiumlegierung ist.The production of the plate element according to the invention can be done by a conventional forming process, wherein a blank is a simple plate of constant thickness made of an aluminum alloy.

Das bevorzugte Plattenelement gemäß Fig. 1 bis Fig. 5 weist zudem eine Profilierung 9 der Bodenebene 1 auf. Diese Profilierung umfasst im Wesentlichen eine Mehrzahl von Zickzack- oder wellenförmigen Vertiefungen, die jeweils einen durchgehenden Kanal darstellen und von unten in den Boden 1 des Plattenelements eingeprägt sind. Jeder der zickzackförmigen Kanäle 9 quert einen gedachten Strömungsweg des Mediums, welcher jeweils von einer kurzen Seite des Plattenelements zur gegenüberliegenden kurzen Seite des Plattenelements verläuft. Die Kanäle 9 sind zudem so positioniert, dass sich bei Stapelung baugleicher Plattenelemente eine möglichst große Zahl von Überkreuzungen von Kanälen 9 des einen Plattenelements mit Kanälen 9 des anderen Plattenelements ergibt. An diesen Kreuzungsstellen liegen jeweils Berührungspunkte der benachbarten Kanäle 9 vor, was durch eine entsprechende Dimensionierung ihrer Prägetiefe sichergestellt ist. Bevorzugt sind die Platten an den Berührungspunkten miteinander verlötet.The preferred plate element according to 1 to 5 also has a profile 9 of the floor level 1. This profiling essentially comprises a plurality of zigzag or wave-shaped depressions, each of which represents a continuous channel and are embossed into the bottom 1 of the plate element from below. Each of the zigzag channels 9 crosses an imaginary flow path of the medium, which runs from a short side of the plate element to the opposite short side of the plate element. The channels 9 are also positioned so that when stacking identical plate elements there is a large number of crossings of channels 9 of one plate element with channels 9 of the other plate element. At these intersections there are contact points between the adjacent channels 9, which is ensured by appropriate dimensioning of their embossing depth. The plates are preferably soldered to one another at the points of contact.

Insgesamt wird hierdurch eine gezielte Umlenkung und Verwirbelung des durchströmenden Mediums erreicht, was zu einer optimalen Kapazität des Wärmetauschers beiträgt.Overall, a targeted deflection and swirling of the medium flowing through is achieved, which contributes to an optimal capacity of the heat exchanger.

In einer Abwandlung gemäß Fig. 6 ist ein nicht erfindungsgemäßes Plattenelement bis auf die Profilierungen 9 identisch mit dem Ausführungsbeispiel gemäß Fig. 1 bis Fig. 5 ausgebildet, wobei anstelle der Profilierungen 9 eine in Fig. 6 schraffierte Turbulenzeinlage 10 an dem Plattenelement vorgesehen. ist. Derartige Turbulenzeinlagen 10 zur Verbesserung der thermischen Tauscherleistung sind an sich aus dem Stand der Technik bekannt.In a variation according to Fig. 6 is a plate element not according to the invention except for the profiles 9 identical to the embodiment according to 1 to 5 formed, a instead of the profiles 9 in Fig. 6 hatched turbulence insert 10 is provided on the plate element. is. Such turbulence inserts 10 for improving the thermal exchanger performance are known per se from the prior art.

Sämtliche der Zeichnungen sind maßstabsgerecht, so dass ihnen gegebenenfalls Maßverhältnisse entnommen werden können.All of the drawings are to scale, so that dimensional relationships can be found if necessary.

Claims (6)

  1. A plate element for a plate cooler, comprising
    an outer edge (8a) which extends around at least a part of the periphery of the plate element and is located essentially in one plane, wherein the outer edge (8a) forms an upper end of a peripheral side wall (8),
    a bottom (1) located in a bottom plane,
    at least one first opening (2, 3), which is designed as a perforation of the bottom and is located in the bottom plane, for a medium to pass, and
    at least one second opening (4, 5), wherein an opening edge (4a, 5a) of the second opening runs in a plane which is parallel to the bottom plane and which is offset relative to the bottom plane in a perpendicular direction,
    wherein
    a second edge (6a, 7a) delimits at least some sections of a base surface (6, 7) which is essentially parallel to the bottom plane (1), wherein the base surface (6, 7) runs at least from the second opening (4, 5) to the side wall (8) and is offset relative to the bottom in a direction perpendicular to the bottom plane, wherein the plate element has a profiling in the bottom plane, wherein the profiling is arranged in a flow path so as to influence the flow of the medium and the profiling is undulated, wherein a plurality of contact points of the profilings are present between the profiling of the plate element and the profiling of an identical second plate element which is rotated by 180°, wherein at least one of the openings has a shape which extends in a longitudinal direction and is different from a circular shape, wherein the two first openings (2, 3) are respectively formed in a longitudinal manner, wherein a longitudinal diameter of the first openings (2, 3) is a bit more than 1.5 times a transverse diameter, wherein the flow of the medium is perpendicular to the longitudinal direction of the first openings (2, 3), wherein the plate element has, in plane view, a rectangular form with rounded edges and wherein the two first openings (2, 3) are both arranged on the same longitudinal side in the edge regions of the rectangle and on the opposite longitudinal side two second openings (4, 5) are provided which have the same form and opening width as the first openings (2, 3).
  2. The plate element according to claim 1, characterized in that the plate element can be connected to a second, identical plate element, wherein in the connected arrangement, the base surface of the plate element has contact with the second plate element essentially in a planar manner.
  3. The plate element according to claim 2, characterized in that the plate element is soldered in a planar manner to the second plate element, at least in the region of the planar contact.
  4. The plate element according to claim 1, characterized in that the profiling is formed by embossing the bottom of the plate element.
  5. The plate element according to any one of the preceding claims, characterized in that the plate element as a whole can be produced from a metal plate having a constant thickness.
  6. A plate cooler, comprising a plurality of identical plate elements according to claim 1.
EP06776149.4A 2005-07-22 2006-07-07 Plate element for a plate cooler Not-in-force EP1910764B9 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005034305A DE102005034305A1 (en) 2005-07-22 2005-07-22 Plate element for a plate cooler
PCT/EP2006/006653 WO2007009615A1 (en) 2005-07-22 2006-07-07 Plate element for a plate cooler

Publications (4)

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EP1910764A1 EP1910764A1 (en) 2008-04-16
EP1910764B1 EP1910764B1 (en) 2013-01-02
EP1910764B2 true EP1910764B2 (en) 2020-07-08
EP1910764B9 EP1910764B9 (en) 2020-12-02

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US (1) US20080264618A1 (en)
EP (1) EP1910764B9 (en)
JP (1) JP2009503418A (en)
CN (1) CN101228408A (en)
DE (1) DE102005034305A1 (en)
WO (1) WO2007009615A1 (en)

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Also Published As

Publication number Publication date
US20080264618A1 (en) 2008-10-30
WO2007009615A1 (en) 2007-01-25
EP1910764A1 (en) 2008-04-16
DE102005034305A1 (en) 2007-01-25
JP2009503418A (en) 2009-01-29
EP1910764B9 (en) 2020-12-02
EP1910764B1 (en) 2013-01-02
CN101228408A (en) 2008-07-23

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