EP2478316A2 - Plate heat exchanger - Google Patents

Plate heat exchanger

Info

Publication number
EP2478316A2
EP2478316A2 EP10752806A EP10752806A EP2478316A2 EP 2478316 A2 EP2478316 A2 EP 2478316A2 EP 10752806 A EP10752806 A EP 10752806A EP 10752806 A EP10752806 A EP 10752806A EP 2478316 A2 EP2478316 A2 EP 2478316A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
plate
openings
cover plate
plate heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10752806A
Other languages
German (de)
French (fr)
Inventor
Swen -Juri Bauer
Andreas GRÜNER
Michael Neubauer
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 International GmbH
Original Assignee
Mahle International GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP2478316A2 publication Critical patent/EP2478316A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—Cooling
    • 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
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0089—Oil coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means

Definitions

  • the present invention relates to a plate heat exchanger, in particular an oil cooler for an internal combustion engine, with a plurality of stacked, wave-shaped heat exchanger plates according to the preamble of claim 1.
  • a cover plate which has at least one point a downwardly directed bulge or molding and engages with this formation in an opening of a heat exchanger plate arranged thereunder.
  • a disadvantage of the cited prior art is that the cover plate in itself and in particular the formations have only a comparatively low stability.
  • the present invention therefore deals with the problem of providing a plate heat exchanger of the generic type, an improved or at least one alternative embodiment, which is characterized in particular by an increased stability with respect to a cover plate.
  • the present invention is based on the general idea, downwardly directed bulges or formations on a cover plate of a Plate heat exchanger to provide a crossed embossed geometry, so that the cover plate, in particular in the region of their downwardly directed formations which may be formed complementary to openings of a heat exchanger plate arranged underneath, have a significantly increased rigidity or stability.
  • the plate heat exchanger according to the invention which may for example be designed as an oil cooler for an internal combustion engine, has in a known manner a plurality of stacked, trough-shaped heat exchanger plates, each having a plurality of openings for a first and second fluid separated therefrom, for example, oil and cooling water ,
  • the upper cover plate now has the inventively crossed embossed formations, which are preferably complementary to the openings of the below
  • dome-shaped shape have a significantly increased stability, since the crossed embossed shape in addition to curved in different directions forms also kinks or edges that increase the rigidity of the molding, similar to body parts for a motor vehicle.
  • the crossed embossed formations can be as well as the previously known dome-shaped formations by means of a stamping or
  • thermoforming cost-effective and technically simple but give the cover plate and thus the entire plate heat exchanger, the desired higher rigidity.
  • the heat exchanger plates are formed as deep-drawn sheet metal parts and have a wall thickness of about 0.5 mm.
  • Deep-drawing refers to a train-pressure-forming a sheet metal blank in a hollow body open on one side, wherein generally a deep drawing with tool and deep drawing with active media, eg. by means of water.
  • the deep-drawn heat exchanger plate shows in particular mutually shifted molecules, resulting in
  • the crossed embossed formations in the cover plate have a slot-shaped shape with an orthogonal thereto extending short web.
  • a geometric design provides a particularly high rigidity, wherein the shape of the formations is of course adapted to the underlying openings. It is also conceivable here, of course, that the length of the web extending to the slot-like shape of the molding corresponds approximately to the width of the oblong hole or slightly more.
  • Fig. 2 shows a cover plate according to the invention with crossed embossed
  • FIG. 3 is a view as in Fig. 2, but in a view obliquely from below,
  • Fig. 4 is a representation as in Fig. 2, but in another
  • Fig. 5 is a representation as in Fig. 4, but in a view obliquely from below.
  • an inventive plate heat exchanger in particular in the manner of an oil cooler for an internal combustion engine, a plurality of stacked, trough-shaped and joining technically tightly interconnected heat exchanger plates 2.
  • a cover plate 3 is provided.
  • the individual heat exchanger plates 2 each have a plurality of openings, not shown, and for a first and a second fluid separated therefrom, wherein the first fluid, for example. Oil and the second fluid, for example. Coolant, in particular cooling water, may be.
  • the upper cover plate 3 is now embossed with crossed
  • Moldings 4 provided (see also Fig. 2 and 3), which formed complementary to the openings of the heat exchanger plate 2 arranged underneath and joining technical tightly connected to this, in particular can be soldered.
  • the cross-shaped formed formations 4 these have a significantly increased stability or rigidity in comparison to previously known, in particular dome-shaped formations, as a result of which the cover plate 3 and with it the entire plate heat exchanger 1 can be made significantly stiffer.
  • the heat exchanger plates 2 are usually formed as deep-drawn sheet metal parts and have a wall thickness of about 0.5 mm, whereas the
  • Cover plate 3 is also formed as a deep-drawn sheet metal part, but usually has an at least slightly thicker wall thickness in the range of about 0.8 mm.
  • the provided in the heat exchanger plates 2 openings are usually used as oil or coolant passages between the individual heat exchanger plates 2.
  • a total of four provided openings are two of them for the first fluid, eg. Oil , And two of them for the second fluid, for example, coolant, reserved.
  • the individual heat exchanger plates are not only in the region of their openings, but in addition also connected to an outer edge 5 joining technology tightly connected to each other, in particular soldered together.
  • FIGS. 2 and 3 As shown in FIGS. 2 and 3 can be seen, have the crossed embossed
  • the web 6 may have approximately the width of the elongated hole of the molding 4 or slightly be shorter or longer. By the web 6, it comes in the region of the formation 4 to an edge formation, which increases the stiffness of the cover plate 3 in the region of the crossed embossed formations 4 similar to the body in motor vehicles.
  • the cover plate 3 may have drainage holes 7, which ensure a higher reliability.
  • FIGS. 4 and 5 embodiments are shown in which the crossed embossed formations 4 of the cover plate 3 are complementary to
  • Coolant openings 8 of the underlying heat exchange plate 2 are formed and joined by joining technology, in particular soldered, are. At the same time, at least one of the cooling liquid openings 8, in this case the cooling liquid opening 8 ', is surrounded by a first bead 9 and a second bead 10, which effect a separation of the two media in the plate heat exchanger 1. At the same time a nozzle 1 1 is formed at certain drainage holes, which also unintentional mixing of the two in the
  • Plate heat exchanger 1 used media, such as water and oil prevented.

Landscapes

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

Abstract

The invention relates to plate heat exchanger (1), in particular an oil cooler for an internal combustion engine, comprising several trough-shaped heat exchanger plates (2) which are stacked on top of each other, which have several openings for a first fluid and a second fluid which is separate from the first. According to the invention, an upper cover plate (3) is provided with crossed embossed recesses (4) which are preferably complimentary to the openings of the heat exchanger plate (2) which is arranged beneath and they can be joined to each other in a sealed manner, in particular by soldering. As a result, a particularly high rigidity can be obtained.

Description

Plattenwärmetauscher  Plate heat exchanger
Die vorliegende Erfindung betrifft einen Plattenwärmetauscher, insbesondere einen Ölkühler für einen Verbrennungsmotor, mit mehreren aufeinander gestapelten, wellenförmigen Wärmetauscherplatten gemäß dem Oberbegriff des Anspruchs 1 . The present invention relates to a plate heat exchanger, in particular an oil cooler for an internal combustion engine, with a plurality of stacked, wave-shaped heat exchanger plates according to the preamble of claim 1.
Aus der WO 2005/071342 A1 ist ein gattungsgemäßer Plattenwärmetauscher bekannt mit einer Vielzahl von einzelnen Wärmetauscherplatten die From WO 2005/071342 A1 a generic plate heat exchanger is known with a plurality of individual heat exchanger plates
fügetechnisch dicht miteinander verbunden, insbesondere miteinander verlötet sind. Als oberer Abschluss ist dabei eine Deckplatte vorgesehen, die an zumindest einer Stelle eine nach unten gerichtete Auswölbung bzw. Ausformung aufweist und mit dieser Ausformung in eine Öffnung einer darunter angeordneten Wärmetauscherplatte eingreift. Nachteilig beim aufgezeigten Stand der Technik ist jedoch, dass die Deckplatte an sich und insbesondere die Ausformungen eine lediglich vergleichsweise geringe Stabilität aufweisen. joining technically sealed together, in particular soldered together. As the upper conclusion, a cover plate is provided which has at least one point a downwardly directed bulge or molding and engages with this formation in an opening of a heat exchanger plate arranged thereunder. A disadvantage of the cited prior art, however, is that the cover plate in itself and in particular the formations have only a comparatively low stability.
Die vorliegende Erfindung beschäftigt sich daher mit dem Problem, für einen Plattenwärmetauscher der gattungsgemäßen Art, eine verbesserte oder zumindest eine alternative Ausführungsform anzugeben, die sich insbesondere durch eine erhöhte Stabilität in Bezug auf eine Deckplatte auszeichnet. The present invention therefore deals with the problem of providing a plate heat exchanger of the generic type, an improved or at least one alternative embodiment, which is characterized in particular by an increased stability with respect to a cover plate.
Dieses Problem wird erfindungsgemäß durch den Gegenstand des This problem is inventively achieved by the subject matter of
unabhängigen Anspruchs 1 gelöst. Vorteilhafte Ausführungsformen sind independent claim 1 solved. Advantageous embodiments are
Gegenstand der abhängigen Ansprüche. Subject of the dependent claims.
Die vorliegende Erfindung beruht auf dem allgemeinen Gedanken, nach unten gerichtete Auswölbungen bzw. Ausformungen an einer Deckplatte eines Plattenwärmetauschers mit einer gekreuzt geprägten Geometrie zu versehen, so dass die Deckplatte insbesondere im Bereich ihrer nach unten gerichteten Ausformungen, die komplementär zu Öffnungen einer darunter angeordneten Wärmetauscherplatte ausgebildet sein können, eine deutlich erhöhte Steifigkeit bzw. Stabilität aufweisen. Der erfindungsgemäße Plattenwärmetauscher, welcher bspw. als ein Ölkühler für einen Verbrennungsmotor ausgebildet sein kann, weist dabei in bekannter Weise mehrere aufeinander gestapelte, wannenförmige Wärmetauscherplatten auf, die jeweils mehrere Öffnungen für ein erstes und davon getrenntes zweites Fluid, bspw. Öl und Kühlwasser, aufweisen. Die obere Deckplatte weist nun die erfindungsgemäß gekreuzt geprägten Ausformungen auf, die vorzugsweise komplementär zu den Öffnungen der darunter The present invention is based on the general idea, downwardly directed bulges or formations on a cover plate of a Plate heat exchanger to provide a crossed embossed geometry, so that the cover plate, in particular in the region of their downwardly directed formations which may be formed complementary to openings of a heat exchanger plate arranged underneath, have a significantly increased rigidity or stability. The plate heat exchanger according to the invention, which may for example be designed as an oil cooler for an internal combustion engine, has in a known manner a plurality of stacked, trough-shaped heat exchanger plates, each having a plurality of openings for a first and second fluid separated therefrom, for example, oil and cooling water , The upper cover plate now has the inventively crossed embossed formations, which are preferably complementary to the openings of the below
angeordneten Wärmetauscherplatte ausgebildet und gleichzeitig fügetechnisch dicht mit dieser verbunden, insbesondere verlötet, sein können. Durch die gekreuzt geprägte Ausformung kann im Vergleich zu einer lediglich arranged heat exchanger plate formed and at the same time joining technical tightly connected to this, in particular soldered, can be. Due to the crossed embossed shape can be compared to a merely
kuppeiförmigen Ausformung eine deutlich erhöhte Stabilität aufweisen, da die gekreuzt geprägte Ausformung zusätzlich zu in unterschiedliche Richtungen gewölbte Formen auch Knicke bzw. Kanten aufweist, die die Steifigkeit der Ausformung, ähnlich wie bei Karosseriebauteilen für ein Kraftfahrzeug, erhöhen. Die gekreuzt geprägten Ausformungen lassen sich dabei ebenso wie die bisher bekannten kuppeiförmigen Ausformungen mittels eines Präge- bzw. dome-shaped shape have a significantly increased stability, since the crossed embossed shape in addition to curved in different directions forms also kinks or edges that increase the rigidity of the molding, similar to body parts for a motor vehicle. The crossed embossed formations can be as well as the previously known dome-shaped formations by means of a stamping or
Tiefziehvorgangs kostengünstig und technisch einfach herstellen, verleihen jedoch der Deckplatte und damit dem gesamten Plattenwärmetauscher die gewünschte höhere Steifigkeit. Making thermoforming cost-effective and technically simple, but give the cover plate and thus the entire plate heat exchanger, the desired higher rigidity.
Bei einer vorteilhaften Weiterbildung der erfindungsgemäßen Lösung, sind die Wärmetauscherplatten als tiefgezogene Blechteile ausgebildet und weisen eine Wandstärke von ca. 0,5 mm auf. Unter Tiefziehen versteht man ein Zug-Druck- Umformen eines Blechzuschnitts in einen einseitig offenen Hohlkörper, wobei generell ein Tiefziehen mit Werkzeug und ein Tiefziehen mit Wirkmedien, bspw. mittels Wasser, unterschieden werden. Die tiefgezogene Wärmetauscherplatte zeigt insbesondere gegeneinander verschobene Moleküle, was zu In an advantageous development of the solution according to the invention, the heat exchanger plates are formed as deep-drawn sheet metal parts and have a wall thickness of about 0.5 mm. Deep-drawing refers to a train-pressure-forming a sheet metal blank in a hollow body open on one side, wherein generally a deep drawing with tool and deep drawing with active media, eg. by means of water. The deep-drawn heat exchanger plate shows in particular mutually shifted molecules, resulting in
Festigkeitsänderungen und insbesondere auch zu Festigkeitserhöhungen führt. Generell ist die Herstellung von Wärmetauscherplatten mittels Tiefziehverfahren allgemein bekannt und auch das Tiefziehen von den erfindungsgemäßen gekreuzt geprägten Ausformungen vergleichsweise einfach und kostenneutral zu realisieren. Je nach Ausführungsform bzw. Einsatzgebiet können dabei die Wandstärken der Wärmetauscherplatten von erwähnten 0,5 mm nach oben oder unten abweichen. Changes in strength and in particular leads to increases in strength. In general, the production of heat exchanger plates by means of deep-drawing process is generally known and also to realize the deep drawing of the crossed embossed formations according to the invention comparatively simple and cost-neutral. Depending on the embodiment or field of application, the wall thicknesses of the heat exchanger plates of said 0.5 mm can deviate upwards or downwards.
Bei einer vorteilhaften Weiterbildung der erfindungsgemäßen Lösung, weisen die gekreuzt geprägten Ausformungen in der Deckplatte eine langlochformige Gestalt mit einem orthogonal dazu verlaufenden kurzen Steg auf. Eine derartige geometrische Gestaltung bietet eine besonders hohe Steifigkeit, wobei die Gestalt der Ausformungen selbstverständlich an die darunter angeordneten Öffnungen angepasst ist. Denkbar ist hier selbstverständlich auch, dass die Länge des zur langlochförmigen Gestalt der Ausformung verlaufenden Stegs in etwa der Breite des Langlochs oder geringfügig mehr entspricht. In an advantageous development of the solution according to the invention, the crossed embossed formations in the cover plate have a slot-shaped shape with an orthogonal thereto extending short web. Such a geometric design provides a particularly high rigidity, wherein the shape of the formations is of course adapted to the underlying openings. It is also conceivable here, of course, that the length of the web extending to the slot-like shape of the molding corresponds approximately to the width of the oblong hole or slightly more.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated
Figurenbeschreibung anhand der Zeichnungen. Description of the figures with reference to the drawings.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen. Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen. It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention. Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.
Dabei zeigen, jeweils schematisch, Show, in each case schematically,
Fig. 1 einen erfindungsgemäßen Plattenwärmetauscher, 1 a plate heat exchanger according to the invention,
Fig. 2 eine erfindungsgemäße Deckplatte mit gekreuzt geprägten Fig. 2 shows a cover plate according to the invention with crossed embossed
Ausformungen in einer Ansicht von schräg oben,  Formations in an oblique view from above,
Fig. 3 eine Darstellung wie in Fig. 2, jedoch bei einer Ansicht von schräg unten, 3 is a view as in Fig. 2, but in a view obliquely from below,
Fig. 4 eine Darstellung wie in Fig. 2, jedoch bei einer anderen Fig. 4 is a representation as in Fig. 2, but in another
Ausführungsform,  embodiment,
Fig. 5 eine Darstellung wie in Fig. 4, jedoch bei einer Ansicht von schräg unten. Fig. 5 is a representation as in Fig. 4, but in a view obliquely from below.
Entsprechend der Fig. 1 , weist ein erfindungsgemäßer Plattenwärmetauscher 1 , insbesondere in der Art eines Ölkühlers für einen Verbrennungsmotor, eine Vielzahl von aufeinander gestapelten, wannenförmigen und fügetechnisch dicht miteinander verbundenen Wärmetauscherplatten 2 auf. Als oberer Abschluss ist eine Deckplatte 3 vorgesehen. Die einzelnen Wärmetauscherplatten 2 weisen dabei jeweils mehrere nicht gezeigte Öffnungen auf und zwar für ein erstes und ein davon getrenntes zweites Fluid, wobei das erste Fluid bspw. Öl und das zweite Fluid bspw. Kühlmittel, insbesondere Kühlwasser, sein kann. Erfindungsgemäß ist nun die obere Deckplatte 3 mit gekreuzt geprägten 1, an inventive plate heat exchanger 1, in particular in the manner of an oil cooler for an internal combustion engine, a plurality of stacked, trough-shaped and joining technically tightly interconnected heat exchanger plates 2. As upper end a cover plate 3 is provided. The individual heat exchanger plates 2 each have a plurality of openings, not shown, and for a first and a second fluid separated therefrom, wherein the first fluid, for example. Oil and the second fluid, for example. Coolant, in particular cooling water, may be. According to the invention, the upper cover plate 3 is now embossed with crossed
Ausformungen 4 versehen (vgl. auch Fig. 2 und 3), die komplementär zu den Öffnungen der darunter angeordneten Wärmetauscherplatte 2 ausgebildet und fügetechnisch dicht mit dieser verbunden, insbesondere verlötet sein können. Durch die gekreuzt geprägt ausgebildeten Ausformungen 4 weisen diese im Vergleich zu bisher bekannten, insbesondere kuppeiförmigen Ausformungen, eine deutlich erhöhte Stabilität bzw. Steifigkeit auf, wodurch die Deckplatte 3 und mit dieser der gesamte Plattenwärmetauscher 1 deutlich steifer ausgebildet werden kann. Moldings 4 provided (see also Fig. 2 and 3), which formed complementary to the openings of the heat exchanger plate 2 arranged underneath and joining technical tightly connected to this, in particular can be soldered. As a result of the cross-shaped formed formations 4, these have a significantly increased stability or rigidity in comparison to previously known, in particular dome-shaped formations, as a result of which the cover plate 3 and with it the entire plate heat exchanger 1 can be made significantly stiffer.
Die Wärmetauscherplatten 2 sind üblicherweise als tiefgezogene Blechteile ausgebildet und besitzen eine Wandstärke von ca. 0,5 mm, wogegen die The heat exchanger plates 2 are usually formed as deep-drawn sheet metal parts and have a wall thickness of about 0.5 mm, whereas the
Deckplatte 3 ebenfalls als tiefgezogenes Blechteil ausgebildet ist, üblicherweise jedoch eine zumindest geringfügig dickere Wandstärke im Bereich von ca. 0,8 mm aufweist. Cover plate 3 is also formed as a deep-drawn sheet metal part, but usually has an at least slightly thicker wall thickness in the range of about 0.8 mm.
Die in den Wärmetauscherplatten 2 vorgesehen Öffnungen, von denen gemäß der Fig. 1 insgesamt vier Öffnungen vorgesehen sind, dienen üblicherweise als Öl- oder Kühlmitteldurchlässe zwischen den einzelnen Wärmetauscherplatten 2. Bei insgesamt vier vorgesehen Öffnungen sind zwei davon für das erste Fluid, bspw. Öl, und zwei davon für das zweite Fluid, bspw. Kühlmittel, reserviert. Die einzelnen Wärmetauscherplatten sind dabei nicht nur im Bereich ihrer Öffnungen, sondern zusätzlich auch an einem Außenrand 5 fügetechnisch dicht miteinander verbunden, insbesondere miteinander verlötet. The provided in the heat exchanger plates 2 openings, of which according to FIG. 1 a total of four openings are provided, are usually used as oil or coolant passages between the individual heat exchanger plates 2. In a total of four provided openings are two of them for the first fluid, eg. Oil , And two of them for the second fluid, for example, coolant, reserved. The individual heat exchanger plates are not only in the region of their openings, but in addition also connected to an outer edge 5 joining technology tightly connected to each other, in particular soldered together.
Wie den Fig. 2 und 3 zu entnehmen ist, weisen die gekreuzt geprägten As shown in FIGS. 2 and 3 can be seen, have the crossed embossed
Ausformungen 4 in der Deckplatte 3 eine langlochförmige Gestalt mit einem orthogonal dazu verlaufenden kürzeren Steg 6 auf. Der Steg 6 kann dabei in etwa die Breite des Langlochs der Ausformung 4 besitzen oder aber geringfügig kürzer oder länger sein. Durch den Steg 6 kommt es im Bereich der Ausformung 4 zu einer Kantenbildung, die ähnlich wie im Karosseriebau bei Kraftfahrzeugen die Steifigkeit der Deckplatte 3 im Bereich der gekreuzt geprägten Ausformungen 4 erhöht. Zusätzlich kann die Deckplatte 3 Drainagebohrungen 7 aufweisen, die eine höhere Betriebssicherheit gewährleisten. Formations 4 in the cover plate 3 on a slot-shaped with an orthogonal thereto extending shorter web 6. The web 6 may have approximately the width of the elongated hole of the molding 4 or slightly be shorter or longer. By the web 6, it comes in the region of the formation 4 to an edge formation, which increases the stiffness of the cover plate 3 in the region of the crossed embossed formations 4 similar to the body in motor vehicles. In addition, the cover plate 3 may have drainage holes 7, which ensure a higher reliability.
Gemäß den Fig. 4 und 5 sind Ausführungsformen gezeigt, bei denen die gekreuzt geprägten Ausformungen 4 der Deckplatte 3 komplementär zu According to FIGS. 4 and 5, embodiments are shown in which the crossed embossed formations 4 of the cover plate 3 are complementary to
Kühlflüssigkeitsöffnungen 8 der darunter liegenden Wärmetauschplatte 2 ausgebildet und fügetechnisch dicht mit diesen verbunden, insbesondere verlötet, sind. Zugleich ist dabei die zumindest eine der Kühlflüssigkeitsöffnungen 8, hier die Kühlflüssigkeitsöffnung 8' von einem ersten Wulst 9 und einem zweiten Wulst 10 umgeben, die eine Trennung der beiden Medien im Plattenwärmetauscher 1 bewirken. Zugleich ist an bestimmten Drainagebohrungen ein Stutzen 1 1 angeformt, der ebenfalls ein ungewolltes Vermischen der beiden im Coolant openings 8 of the underlying heat exchange plate 2 are formed and joined by joining technology, in particular soldered, are. At the same time, at least one of the cooling liquid openings 8, in this case the cooling liquid opening 8 ', is surrounded by a first bead 9 and a second bead 10, which effect a separation of the two media in the plate heat exchanger 1. At the same time a nozzle 1 1 is formed at certain drainage holes, which also unintentional mixing of the two in the
Plattenwärmetauscher 1 eingesetzten Medien, beispielsweise Wasser und Öl, verhindert. Plate heat exchanger 1 used media, such as water and oil prevented.
Insgesamt kann mit der erfindungsgemäß ausgebildeten Deckplatte 3 ohne konstruktiven Mehraufwand und insbesondere ohne Kostenmehraufwand eine deutliche Steigerung der Steifigkeit bzw. Stabilität erreicht werden. Overall, a significant increase in the rigidity or stability can be achieved with the cover plate 3 designed according to the invention without additional constructive effort and, in particular, without cost overhead.

Claims

Patentansprüche claims
1 . Plattenwärmetauscher (1 ), insbesondere ein Ölkühler für einen 1 . Plate heat exchanger (1), in particular an oil cooler for a
Verbrennungsmotor, mit mehreren aufeinandergestapelten, wannenförmigen Wärmetauscherplatten (2), die jeweils mehrere Öffnungen für ein erstes und ein davon getrenntes zweites Fluid aufweisen, Internal combustion engine, with a plurality of stacked, trough-shaped heat exchanger plates (2), each having a plurality of openings for a first and a second fluid separated therefrom,
dadurch gekennzeichnet, characterized,
dass eine obere Deckplatte (3) mit gekreuzt geprägten Ausformungen (4) versehen ist, die zu den Öffnungen der darunter angeordneten an upper cover plate (3) is provided with crossed embossed formations (4) facing the openings of the lower ones
Wärmetauscherplatte (2) ausgerichtet sind und fügetechnisch dicht mit dieser verbunden, insbesondere verlötet, sein können. Heat exchanger plate (2) are aligned and joining technically tightly connected to this, in particular soldered, can be.
2. Plattenwärmetauscher nach Anspruch 1 , 2. Plate heat exchanger according to claim 1,
dadurch gekennzeichnet, characterized,
dass die Wärmetauscherplatten (2) als tief gezogene Blechteile ausgebildet sind und eine Wandstärke von ca. 0,5 mm aufweisen. that the heat exchanger plates (2) are formed as deeply drawn sheet metal parts and have a wall thickness of about 0.5 mm.
3. Plattenwärmetauscher nach Anspruch 1 oder 2, 3. Plate heat exchanger according to claim 1 or 2,
dadurch gekennzeichnet, characterized,
dass die Deckplatte (3) als tief gezogenes Blechteil ausgebildet ist und eine Wandstärke von ca. 0,8 mm aufweist. that the cover plate (3) is formed as a deep-drawn sheet metal part and has a wall thickness of about 0.8 mm.
4. Plattenwärmetauscher nach einem der Ansprüche 1 bis 3, 4. Plate heat exchanger according to one of claims 1 to 3,
dadurch gekennzeichnet, characterized,
dass die Öffnungen als Öl- oder Kühlmitteldurchlässe ausgebildet sind. that the openings are formed as oil or coolant passages.
5. Plattenwärmetauscher nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, 5. Plate heat exchanger according to one of claims 1 to 4, characterized
dass jede Wärmetauscherplatte (2) vier Öffnungen, nämlich zwei für das erste Fluid und zwei für das zweite Fluid, aufweist. in that each heat exchanger plate (2) has four openings, namely two for the first fluid and two for the second fluid.
6. Plattenwärmetauscher nach einem der Ansprüche 1 bis 5, 6. Plate heat exchanger according to one of claims 1 to 5,
dadurch gekennzeichnet, characterized,
dass die Deckplatte (3) mit der unmittelbar darunter angeordneten that the cover plate (3) arranged with the immediately below
Wärmetauscherplatte (2) zusätzlich an einem Außenrand (5) fügetechnisch dicht verbunden, insbesondere verlötet, ist. Heat exchanger plate (2) in addition to an outer edge (5) joining technically tightly connected, in particular soldered, is.
7. Plattenwärmetauscher nach einem der Ansprüche 1 bis 6, 7. Plate heat exchanger according to one of claims 1 to 6,
dadurch gekennzeichnet, characterized,
dass die gekreuzt geprägten Ausformungen (4) in der Deckplatte (3) eine langlochformige Gestalt mit einem orthogonal dazu verlaufenden Steg (6) aufweisen. that the crossed embossed formations (4) in the cover plate (3) have a slot-shaped shape with a perpendicularly extending web (6).
EP10752806A 2009-09-15 2010-09-10 Plate heat exchanger Withdrawn EP2478316A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009041524A DE102009041524A1 (en) 2009-09-15 2009-09-15 Plate heat exchanger
PCT/EP2010/063319 WO2011032893A2 (en) 2009-09-15 2010-09-10 Plate heat exchanger

Publications (1)

Publication Number Publication Date
EP2478316A2 true EP2478316A2 (en) 2012-07-25

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US (1) US9353656B2 (en)
EP (1) EP2478316A2 (en)
JP (1) JP5836274B2 (en)
DE (1) DE102009041524A1 (en)
WO (1) WO2011032893A2 (en)

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Also Published As

Publication number Publication date
JP5836274B2 (en) 2015-12-24
US9353656B2 (en) 2016-05-31
JP2013504743A (en) 2013-02-07
WO2011032893A2 (en) 2011-03-24
US20120175093A1 (en) 2012-07-12
WO2011032893A3 (en) 2011-08-11
DE102009041524A1 (en) 2011-03-24

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