EP1763652A1 - Heat exchanger - Google Patents

Heat exchanger

Info

Publication number
EP1763652A1
EP1763652A1 EP05764150A EP05764150A EP1763652A1 EP 1763652 A1 EP1763652 A1 EP 1763652A1 EP 05764150 A EP05764150 A EP 05764150A EP 05764150 A EP05764150 A EP 05764150A EP 1763652 A1 EP1763652 A1 EP 1763652A1
Authority
EP
European Patent Office
Prior art keywords
housing
heat exchanger
exchanger according
sandwich construction
sheet
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
EP05764150A
Other languages
German (de)
French (fr)
Other versions
EP1763652B1 (en
Inventor
Martin Bauer
Steffen Brunner
Peter Geskes
Martin KÄMMERER
Claudia Lang
Rainer Lutz
Ulrich Maucher
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
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1763652A1 publication Critical patent/EP1763652A1/en
Application granted granted Critical
Publication of EP1763652B1 publication Critical patent/EP1763652B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • 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
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases

Definitions

  • the invention relates to a heat exchanger in tube bundle construction or in disk construction according to the preamble of claim 1.
  • a core problem in this case is the pressure difference between the primary medium in the flow channels provided for this purpose in the heat exchanger and the secondary medium in the respective adjacent flow channels.
  • the separation between primary and secondary medium takes place by means of relatively thin sheet-metal walls, which on their own can not support the pressure difference between the two media, so that thicker wall thicknesses are required, which, however, are disadvantageous, for example with regard to the material properties. and manufacturing costs, as well as in terms of total weight.
  • the heat exchanger is constructed in such a way that the flow channels of the primary and secondary medium alternate so that the pressure level of the other medium rests on both sides of the inner flow channels.
  • the heat exchanger is thus designed for overpressure of the primary medium relative to the secondary medium and vice versa . If the support structure is firmly connected to the flow channel walls, then it causes a stiffening both against overpressure from outside as a result of the support, but also against overpressure within the Strö ⁇ mungskanals by acting as a tie rod between the two wholie ⁇ ing flow channel walls.
  • rib structures, support plates or supporting knobs / beads are used.
  • FIGS. 2a and 2b An example of a known tube bundle construction with knob support is shown in FIGS. 2a and 2b.
  • stiffening with knobs 110 leads to a structure which is very stable in terms of pressure, since a symmetrical load case bears against the respective opposite flow channel walls with equal pressures.
  • the outer flow channels are problematic, since the pressure on the outer side of the flow channel is opposed only by the ambient pressure or by the housing wall 102, which itself is not supported. Thus, there is a risk of damage to the outermost flow channel as a result of the pressure difference.
  • the outermost flow channel can inflate as a result of the high internal pressure, so that the shape changes, the flow channel shifts and / or is no longer supported symmetrically, which also affects the adjacent flow channels, so that the entire wall is affected Heat exchanger including the housing "inflates.” Due to the strains, the service life of the heat exchanger can be considerably increased. be reduced. To increase the stability, the housing 102 is formed relatively thick, which leads among other things to a high weight.
  • a thicker base plate is provided for an oil cooler in disc construction in DE 197 11 258 C2 adjacent to the outermost disc, which - apart from the thickness - approximately corresponds in shape to the shape of the outermost disc.
  • this Grund ⁇ plate has the disadvantage of a high weight.
  • a heat exchanger in particular in tube bundle, plate or disk construction, wherein the heat exchanger has a housing in which a plurality of Strömurigskanälen are formed for a primary medium and a secondary medium, and the Ge housing is designed in sandwich construction.
  • the heat exchanger is preferably an exhaust gas cooler.
  • an exhaust gas cooler it is also possible to use any other heat exchanger of suitable construction, for example a charge air / coolant cooler or an oil cooler.
  • the housing is preferably formed by at least two, preferably three, sheets, the outer surface of the outer sheet forming the housing outer surface.
  • the inner plate is preferably spaced from the outer plate, wherein between the outer plate and the inner plate, preferably a middle plate is arranged, which is a rib structure. having tur. Instead of a rib structure, other structures spaced apart from the two plates, such as knobs / beads, are also possible.
  • the sheets are preferably soldered together.
  • the soldering can preferably be done in a single operation, for which the sheets are prepared accordingly before assembly.
  • tube bundles, plates or disc stacks are preferably arranged within the inner plate, which serve the heat exchange between see the two operating media.
  • a flow channel for one of the operating media is preferably provided between the outer plate and the inner plate so that this operating medium is also located outside the region in which the actual heat exchanger structures, such as tube bundles, are provided, and a corresponding pressure prevails.
  • the inventive design of the housing significantly thinner material thicknesses can be used in place of a simple housing wall with a large wall thickness at about the same cost, which show an increased strength in such a structure.
  • the structural weight compared to conventional housings can be significantly reduced.
  • the components in the unsoldered state are comparatively flexible and can easily be deformed, since no percolation or the like is required. Due to the relatively large area flat surfaces, the connection to the adjacent components in the housing, for example by soldering, supported. If necessary, with low clamping or weight forces during the soldering process gap dimensions Gir ⁇ provides that ensure a surface soldering of the two outer sheets with the intervening rib structure to the housing. Only in the soldered state results in a structure with a large bending stiffness. Under certain circumstances, a housing with exactly two sheets, of which at least one particularly preferably with spacers such as Rip ⁇ pen, ridges, waves, knobs or the like is provided. A reduction in the number of sheets simplifies the production of the heat exchanger.
  • the housing is designed only on two sides or in two opposite housing regions in a sandwich construction.
  • FIG. 1 shows a section with only partially illustrated internal structure through a heat exchanger according to the invention
  • Fig. 2a, b respectively a partial section in different directions through a heat exchanger in Rohrbündel ⁇ construction with knob support according to the prior art.
  • a heat exchanger 1 serving as an exhaust gas cooler has a housing 2, which is formed by a sandwich structure consisting of a plurality of metal sheets 3, 4 and 5.
  • the outer sheet 3 forms with its outer surface the outer surface of the heat exchanger. 1
  • the outer metal sheet 3 has a trough-shaped region 3 'and a cover 3 "closing the same, in each case parallel to the outer metal sheet 3 extending, that is to say both in the trough-shaped region 3 "and in the region of the lid 3", the middle plate 4 provided with a rib structure and on the inside thereof the inner plate 5 are arranged and soldered together, the plates 4 and 5 shorter than the outer sheet 3 are formed.
  • the tube bundle 6 of the exhaust gas cooler are arranged.
  • the outermost tube of the tube bundle 6 in each case directly against the inner surface of the inner plate 5 and is soldered to the same.
  • the joining or soldering of the heat exchanger 1 is carried out in a known manner in one operation.
  • a first flow channel in this case for the medium to be cooled, namely the exhaust gas (primary medium), through the interior of the tube bundle 6 and a second flow channel, for the cooling medium (Sekun ⁇ därmedium), is formed by the spaces between the tube bundles 6.
  • the second flow channel is assigned as the outermost region thereof also the hollow space formed by the rib structure of the middle plate 4, so that a corresponding pressure also prevails here.
  • a stack of disc pairs is arranged in the interior of a correspondingly multi-part housing instead of Rohr ⁇ 6, in their interior the first flow channel and in the interstices and the inter mediate spaces to the outermost plate the second flow channel form.

Abstract

The invention relates to a heat exchanger, particularly in tube bundle-type, panel-type or plate-type design. The heat exchanger has a housing inside of which a number of flow channels are formed for a primary flow and a secondary medium, and the housing has a sandwich design.

Description

Wärmeübertrager Heat exchanger
Die Erfindung betrifft einen Wärmeübertrager in Rohrbündelbauweise oder in Scheibenbauweise gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a heat exchanger in tube bundle construction or in disk construction according to the preamble of claim 1.
Auf Grund der immer größer werdenden Belastungen in Hinblick auf Druck und Temperatur werden immer größere Anforderungen bezüglich der Festig¬ keit von Wärmeübertragern gestellt. Ein Kernproblem hierbei ist der Druck¬ unterschied zwischen Primärmedium in den im Wärmeübertrager hierfür vor- gesehenen Strömungskanälen und Sekundärmedium in den jeweils benach¬ barten Strömungskanälen. Üblicherweise erfolgt die Trennung zwischen Primär- und Sekundärmedium durch relativ dünne Blechwände, die von sich aus den Druckunterschied zwischen den beiden Medien nicht tragen kön¬ nen, so dass dickere Wandstärken erforderlich sind, welche jedoch Nachtei- Ie, beispielsweise in Hinblick auf die Material- und Herstellungskosten, sowie in Hinblick auf das Gesamtgewicht, mit sich bringen.Due to the ever-increasing loads with regard to pressure and temperature, ever greater demands are made with regard to the strength of heat exchangers. A core problem in this case is the pressure difference between the primary medium in the flow channels provided for this purpose in the heat exchanger and the secondary medium in the respective adjacent flow channels. Usually, the separation between primary and secondary medium takes place by means of relatively thin sheet-metal walls, which on their own can not support the pressure difference between the two media, so that thicker wall thicknesses are required, which, however, are disadvantageous, for example with regard to the material properties. and manufacturing costs, as well as in terms of total weight.
Normalerweise ist der Wärmeübertrager so aufgebaut, dass sich die Strö¬ mungskanäle des Primär- und Sekundärmediums abwechseln, so dass auf beiden Seiten der inneren Strömungskanäle das Druckniveau des anderen Mediums anliegt. Durch Einbringen von Stützstrukturen in einen Strömungs- kanal kann dieser gegen Überdruck von der anderen Seite abgestützt wer¬ den. Da der Druck auf beiden Seiten des Kanals gleich ist, stützen sich die gegenüberliegenden Strömungskanalwände über die Stützstrukturen gegen¬ seitig ab. Werden in beide Strömungskanäle, das heißt in die Strömungska- näle des Primärmediums und die Strömungskanäle des Sekundärmediums, Stützstrukturen eingebracht, so sind alle Strömungskanäle gegen Überdruck von der Außenseite abgestützt, der Wärmeübertrager ist somit für Überdruck des Primärmediums gegenüber dem Sekundärmedium und umgekehrt aus¬ gelegt. Ist die Stützstruktur fest mit den Strömungskanalwänden verbunden, dann bewirkt sie eine Versteifung sowohl gegen Überdruck von außen in Folge der Abstützung, aber auch gegen Überdruck innerhalb des Strö¬ mungskanals, indem sie als Zuganker zwischen den beiden gegenüberlie¬ genden Strömungskanalwänden wirkt. Üblicherweise werden Rippenstruktu¬ ren, Abstützbleche oder Abstütznoppen/-sicken verwendet.Normally, the heat exchanger is constructed in such a way that the flow channels of the primary and secondary medium alternate so that the pressure level of the other medium rests on both sides of the inner flow channels. By introducing support structures into a flow This channel can be supported against overpressure from the other side. Since the pressure on both sides of the channel is the same, the opposite flow channel walls are supported on the support structures gegen¬ side. If support structures are introduced into both flow channels, that is to say into the flow channels of the primary medium and the flow channels of the secondary medium, all flow channels are supported against excess pressure from the outside, the heat exchanger is thus designed for overpressure of the primary medium relative to the secondary medium and vice versa , If the support structure is firmly connected to the flow channel walls, then it causes a stiffening both against overpressure from outside as a result of the support, but also against overpressure within the Strö¬ mungskanals by acting as a tie rod between the two gegenüberlie¬ ing flow channel walls. Usually, rib structures, support plates or supporting knobs / beads are used.
Ein Beispiel einer bekannten Rohrbündelbauweise mit Noppenabstützung ist in den Figuren 2a und 2b dargestellt. Im Inneren des Wärmeübertragers 101 führt eine derartige Versteifung mit Noppen 110 zu einer sehr druckstabilen Struktur, da ein symmetrischer Lastfall mit gleichen Drücken an jeweils ge- genüberliegenden Strömungskanalwänden anliegt. Problematisch sind je¬ doch die äußeren Strömungskanäle, da dem Druck auf der Strömungska¬ nalaußenseite nur der Umgebungsdruck beziehungsweise die selbst nicht abgestütze Gehäusewand 102 gegenübersteht. Somit besteht die Gefahr einer Beschädigung des äußersten Strömungskanals in Folge der Druckdif- ferenz. Ferner kann sich der äußerste Strömungskanal in Folge des hohen Innendrucks aufblähen, so dass sich die Form verändert, sich der Strö¬ mungskanal verschiebt und/oder nicht mehr symmetrisch abstützt, was sich auch auf die benachbarten Strömungskanäle auswirkt, so dass sich der ge¬ samte Wärmeübertrager einschließlich dem Gehäuse „aufbläst". Auf Grund der Dehnungen kann die Lebensdauer des Wärmetauschers erheblich ver- ringert werden. Zur Erhöhung der Stabilität ist das Gehäuse 102 relativ dick ausgebildet, was unter anderem zu einem hohen Gewicht führt.An example of a known tube bundle construction with knob support is shown in FIGS. 2a and 2b. In the interior of the heat exchanger 101, such stiffening with knobs 110 leads to a structure which is very stable in terms of pressure, since a symmetrical load case bears against the respective opposite flow channel walls with equal pressures. However, the outer flow channels are problematic, since the pressure on the outer side of the flow channel is opposed only by the ambient pressure or by the housing wall 102, which itself is not supported. Thus, there is a risk of damage to the outermost flow channel as a result of the pressure difference. Furthermore, the outermost flow channel can inflate as a result of the high internal pressure, so that the shape changes, the flow channel shifts and / or is no longer supported symmetrically, which also affects the adjacent flow channels, so that the entire wall is affected Heat exchanger including the housing "inflates." Due to the strains, the service life of the heat exchanger can be considerably increased. be reduced. To increase the stability, the housing 102 is formed relatively thick, which leads among other things to a high weight.
Um ein Aufblasen zu verhindern, wird für einen Ölkühler in Scheibenbauwei- se in der DE 197 11 258 C2 anliegend an die äußerste Scheibe eine dicker ausgebildete Grundplatte vorgesehen, welche - abgesehen von der Dicke - in ihrer Form etwa der Form der äußersten Scheibe entspricht. Diese Grund¬ platte hat jedoch den Nachteil eines hohen Gewichts.In order to prevent inflation, a thicker base plate is provided for an oil cooler in disc construction in DE 197 11 258 C2 adjacent to the outermost disc, which - apart from the thickness - approximately corresponds in shape to the shape of the outermost disc. However, this Grund¬ plate has the disadvantage of a high weight.
Es ist Aufgabe der Erfindung, einen verbesserten Wärmeübertrager zur Verfügung zu stellen.It is an object of the invention to provide an improved heat exchanger available.
Diese Aufgabe wird gelöst durch einen Wärmeübertrager mit den Merkmalen des Anspruchs 1. Vorteilhafte Ausgestaltungen sind Gegenstand der Un- teransprüche.This object is achieved by a heat exchanger with the features of claim 1. Advantageous embodiments are the subject of the dependent claims.
Erfindungsgemäß ist ein Wärmeübertrager vorgesehen, insbesondere in Rohrbündel-, Platten- oder Scheibenbauweise, wobei der Wärmeübertrager ein Gehäuse aufweist, in welchem eine Mehrzahl von Strömurigskanälen für ein Primärmedium und ein Sekundärmedium ausgebildet sind, und das Ge¬ häuse in Sandwich-Bauweise ausgebildet ist. Dabei ist der Wärmeübertrager bevorzugt ein Abgaskühler. Anstelle eines Abgaskühlers kann auch ein be¬ liebiger anderer entsprechend aufgebauter Wärmeübertrager, beispielsweise ein Ladeluft-/Kühlmittel-Kühler oder ein Ölkühler, verwendet werden.According to the invention, a heat exchanger is provided, in particular in tube bundle, plate or disk construction, wherein the heat exchanger has a housing in which a plurality of Strömurigskanälen are formed for a primary medium and a secondary medium, and the Ge housing is designed in sandwich construction. In this case, the heat exchanger is preferably an exhaust gas cooler. Instead of an exhaust gas cooler, it is also possible to use any other heat exchanger of suitable construction, for example a charge air / coolant cooler or an oil cooler.
Das Gehäuse ist bevorzugt durch mindestens zwei, vorzugsweise drei Ble¬ che gebildet, wobei die Außenfläche des äußeren Blechs die Gehäuseau¬ ßenfläche bildet. Das innere Blech ist bevorzugt von dem äußeren Blech beabstandet, wobei zwischen dem äußeren Blech und dem inneren Blech vorzugsweise ein mittleres Blech angeordnet ist, welches eine Rippenstruk- tur aufweist. An Stelle einer Rippenstruktur sind auch andere die beiden Ble¬ che beabstandende Strukturen, wie beispielsweise Noppen/Sicken, möglich.The housing is preferably formed by at least two, preferably three, sheets, the outer surface of the outer sheet forming the housing outer surface. The inner plate is preferably spaced from the outer plate, wherein between the outer plate and the inner plate, preferably a middle plate is arranged, which is a rib structure. having tur. Instead of a rib structure, other structures spaced apart from the two plates, such as knobs / beads, are also possible.
Die Bleche sind bevorzugt miteinander verlötet. Dabei kann das Verlöten bevorzugt in einem einzigen Arbeitsgang erfolgen, wofür die Bleche entspre¬ chend vor dem Zusammenbau vorbereitet sind.The sheets are preferably soldered together. In this case, the soldering can preferably be done in a single operation, for which the sheets are prepared accordingly before assembly.
Im Gehäuse sind vorzugsweise innerhalb des inneren Blechs Rohrbündel, Platten oder Scheibenstapel angeordnet, welche dem Wärmeaustausch zwi- sehen den beiden Betriebsmedien dienen.In the housing, tube bundles, plates or disc stacks are preferably arranged within the inner plate, which serve the heat exchange between see the two operating media.
Zwischen dem äußeren Blech und dem inneren Blech ist vorzugsweise ein Strömungskanal für eines der Betriebsmedien vorgesehen, so dass sich die¬ ses Betriebsmedium auch außerhalb des Bereichs, in welchem die eigentli- chen Wärmetauscherstrukturen, wie beispielsweise Rohrbündel, vorgesehen sind, befindet und ein entsprechender Druck herrscht.A flow channel for one of the operating media is preferably provided between the outer plate and the inner plate so that this operating medium is also located outside the region in which the actual heat exchanger structures, such as tube bundles, are provided, and a corresponding pressure prevails.
Durch die erfindungsgemäße Ausgestaltung des Gehäuses können an Stelle einer einfachen Gehäusewand mit großer Wanddicke bei etwa gleichen Ko- sten deutlich dünnere Materialstärken verwendet werden, welche bei einem derartigen Aufbau eine erhöhte Festigkeit zeigen. Bei vergleichbaren Festig¬ keiten kann das Baugewicht gegenüber herkömmlichen Gehäusen deutlich verringert werden. Ferner sind die Bauteile im unverlöteten Zustand ver¬ gleichsweise flexibel und können einfach verformt werden, da keine Versik- kungen oder ähnliches erforderlich sind. Durch die relativ großflächig ebenen Flächen wird die Anbindung an die benachbarten Bauteile im Gehäuse, zum Beispiel durch Verlötung, unterstützt. Bei Bedarf können mit geringen Spann- oder Gewichtskräften während des Lötprozesses Spaltmaße einge¬ stellt werden, die eine flächige Verlötung der beiden äußeren Bleche mit der dazwischenliegenden Rippenstruktur zum Gehäuse gewährleisten. Erst im verlöteten Zustand ergibt sich eine Struktur mit einer großen Biegesteifigkeit. Unter Umständen vorteilhaft ist ein Gehäuse mit genau zwei Blechen, von denen mindestens eines besonders bevorzugt mit Abstandshaltern wie Rip¬ pen, Stegen, Wellen, Noppen oder dergleichen versehen ist. Eine Verringe- rung der Anzahl der Bleche vereinfacht die Fertigung des Wärmeübertra¬ gers.The inventive design of the housing significantly thinner material thicknesses can be used in place of a simple housing wall with a large wall thickness at about the same cost, which show an increased strength in such a structure. At comparable Festig¬ speeds the structural weight compared to conventional housings can be significantly reduced. Furthermore, the components in the unsoldered state are comparatively flexible and can easily be deformed, since no percolation or the like is required. Due to the relatively large area flat surfaces, the connection to the adjacent components in the housing, for example by soldering, supported. If necessary, with low clamping or weight forces during the soldering process gap dimensions einge¬ provides that ensure a surface soldering of the two outer sheets with the intervening rib structure to the housing. Only in the soldered state results in a structure with a large bending stiffness. Under certain circumstances, a housing with exactly two sheets, of which at least one particularly preferably with spacers such as Rip¬ pen, ridges, waves, knobs or the like is provided. A reduction in the number of sheets simplifies the production of the heat exchanger.
Ebenfalls eine Vereinfachung der Fertigung ist unter Umständen dadurch erreichbar, daß gemäß einer bevorzugten Ausgestaltung das Gehäuse nur auf zwei Seiten beziehungsweise in zwei einander gegenüberliegenden Ge¬ häusebereichen in Sandwich-Bauweise ausgebildet ist.Likewise, a simplification of the production is possibly achievable in that, according to a preferred embodiment, the housing is designed only on two sides or in two opposite housing regions in a sandwich construction.
Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels mit Variante, teilweise unter Bezugnahme auf die Zeichnung, im Einzelnen er- läutert. In der Zeichnung zeigen:In the following, the invention will be explained in detail with reference to an embodiment with variant, partly with reference to the drawing. In the drawing show:
Fig. 1 einen Schnitt mit nur teilweise dargestellter Innenstruktur durch einen erfindungsgemäßen Wärmetauscher, und1 shows a section with only partially illustrated internal structure through a heat exchanger according to the invention, and
Fig. 2a, b jeweils einen ausschnittsweisen Schnitt in verschiedenen Richtungen durch einen Wärmeübertrager in Rohrbündel¬ bauweise mit Noppenabstützung gemäß dem Stand der Technik.Fig. 2a, b respectively a partial section in different directions through a heat exchanger in Rohrbündel¬ construction with knob support according to the prior art.
Ein als Abgaskühler dienender Wärmeübertrager 1 weist ein Gehäuse 2 auf, welches durch eine aus mehreren Blechen 3, 4 und 5 bestehende Sandwich- Struktur gebildet ist. Das äußere Blech 3 bildet mit seiner Außenfläche die Außenfläche des Wärmeübertragers 1.A heat exchanger 1 serving as an exhaust gas cooler has a housing 2, which is formed by a sandwich structure consisting of a plurality of metal sheets 3, 4 and 5. The outer sheet 3 forms with its outer surface the outer surface of the heat exchanger. 1
Das äußere Blech 3 weist einen wannenförmigen Bereich 3' und einen die¬ sen verschließenden Deckel 3" auf. Jeweils parallel zu dem äußeren Blech 3 verlaufend, das heißt sowohl im wannenförmigen Bereich 3" als auch im Be¬ reich des Deckels 3", sind das mittlere mit einer Rippenstruktur versehene Blech 4 und auf der Innenseite hiervon das innere Blech 5 angeordnet und miteinander verlötet, wobei die Bleche 4 und 5 kürzer als das äußere Blech 3 ausgebildet sind.The outer metal sheet 3 has a trough-shaped region 3 'and a cover 3 "closing the same, in each case parallel to the outer metal sheet 3 extending, that is to say both in the trough-shaped region 3 "and in the region of the lid 3", the middle plate 4 provided with a rib structure and on the inside thereof the inner plate 5 are arranged and soldered together, the plates 4 and 5 shorter than the outer sheet 3 are formed.
Innerhalb von dem inneren Blech 5 sind die Rohrbündel 6 des Abgaskühlers angeordnet. Dabei liegt das äußerste Rohr des Rohrbündels 6 jeweils direkt an der Innenfläche des inneren Blechs 5 an und ist mit demselben verlötet. Das Fügen beziehungsweie Verlöten des Wärmeübertragers 1 erfolgt auf an sich bekannte Weise in einem Arbeitsgang.Within the inner plate 5, the tube bundle 6 of the exhaust gas cooler are arranged. In this case, the outermost tube of the tube bundle 6 in each case directly against the inner surface of the inner plate 5 and is soldered to the same. The joining or soldering of the heat exchanger 1 is carried out in a known manner in one operation.
Ein erster Strömungskanal, vorliegend für das zu kühlende Medium, nämlich das Abgas (Primärmedium), wird durch den Innenraum der Rohrbündel 6 und ein zweiter Strömungskanal, vorliegend für das Kühlmedium (Sekun¬ därmedium), wird durch die Zwischenräume zwischen den Rohrbündeln 6 gebildet. Dem zweiten Strömungskanal ist als äußerstem Bereich desselben auch der auf Grund der Rippenstruktur des mittleren Blechs 4 hohl ausgebil¬ deten Zwischenraums des Gehäuses 2 zugeordnet, so dass auch hier ein entsprechender Druck herrscht.A first flow channel, in this case for the medium to be cooled, namely the exhaust gas (primary medium), through the interior of the tube bundle 6 and a second flow channel, for the cooling medium (Sekun¬ därmedium), is formed by the spaces between the tube bundles 6. The second flow channel is assigned as the outermost region thereof also the hollow space formed by the rib structure of the middle plate 4, so that a corresponding pressure also prevails here.
Gemäß einer nicht in der Zeichnung dargestellten Variante ist im Inneren eines entsprechend mehrteilig ausgebildeten Gehäuses anstelle der Rohr¬ bündel 6 ein Stapel von Scheibenpaaren angeordnet, die in ihrem Inneren den ersten Strömungskanal und in den Zwischenräumen sowie den Zwi¬ schenräumen zum äußersten Blech den zweiten Strömungskanal bilden. BezugszeichenlisteAccording to a variant not shown in the drawing, a stack of disc pairs is arranged in the interior of a correspondingly multi-part housing instead of Rohr¬ 6, in their interior the first flow channel and in the interstices and the inter mediate spaces to the outermost plate the second flow channel form. LIST OF REFERENCE NUMBERS
1, 101 Wärmeübertrager 2, 102 Gehäuse 3 äußeres Blech 3' wannenförmiger Bereich 3" Deckel 4 mittleres Blech 5 inneres Blech 6 Rohrbündel 110 Noppe 1, 101 heat exchanger 2, 102 housing 3 outer plate 3 'trough-shaped area 3 "cover 4 middle plate 5 inner plate 6 tube bundle 110 knob

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Wärmeübertrager, insbesondere in Rohrbündel-, Platten- oder Schei¬ benbauweise, wobei der Wärmeübertrager (1) ein Gehäuse (2) auf¬ weist, in welchem eine Mehrzahl von Strömungskanälen für ein Pri¬ märmedium und ein Sekundärmedium ausgebildet sind, dadurch ge¬ kennzeichnet, dass das Gehäuse (2) zumindest bereichsweise, insbe- sondere im wesentlichen durchgehend, in Sandwich-Bauweise ausge¬ bildet ist.1. Heat exchanger, in particular in tube bundle, plate or Schei¬ ben construction, wherein the heat exchanger (1) has a housing (2) auf¬ has, in which a plurality of flow channels for a Pri¬ märmedium and a secondary medium are formed, characterized ge ¬ indicates that the housing (2) is at least partially, in particular, substantially continuously ausge¬ in sandwich construction ausge¬ forms.
2. Wärmeübertrager nach Anspruch 1 , dadurch gekennzeichnet, dass das Gehäuse (2) in Sandwich-Bauweise durch mindestens zwei Bleche (3, 4, 5) gebildet ist, wobei die Außenfläche des äußeren Blechs (3) die Gehäuseaußenfläche bildet.2. Heat exchanger according to claim 1, characterized in that the housing (2) in sandwich construction by at least two sheets (3, 4, 5) is formed, wherein the outer surface of the outer sheet (3) forms the housing outer surface.
3. Wärmeübertrager nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Gehäuse (2) in Sandwich-Bauweise durch mindestens zwei Bleche (3, 4, 5) gebildet ist, wobei das innere Blech (5) von dem die Gehäuseaußenfläche bildenden äußeren Blech (3) beabstandet ist.3. Heat exchanger according to claim 1 or 2, characterized in that the housing (2) in a sandwich construction by at least two sheets (3, 4, 5) is formed, wherein the inner sheet (5) of the housing outer surface forming the outer sheet (3) is spaced.
4. Wärmeübertrager nach einem der vorhergehenden Ansprüche, da¬ durch gekennzeichnet, dass das Gehäuse (2) in Sandwich-Bauweise eine durch ein mittleres Blech gebildete (4) Rippenstruktur umfasst, die zwischen einem äußeren Blech (3) und einem inneren Blech (5) ange¬ ordnet ist.4. Heat exchanger according to one of the preceding claims, da¬ characterized in that the housing (2) comprises in sandwich construction a (4) formed by a central plate fin structure, the is arranged ange¬ between an outer sheet (3) and an inner plate (5).
5. Wärmeübertrager nach Anspruch 4, dadurch gekennzeichnet, dass die Rippenstruktur zwischen dem äußeren Blech (3) und dem inneren Blech (5) eingelötet oder -geschweißt ist.5. Heat exchanger according to claim 4, characterized in that the rib structure between the outer sheet (3) and the inner sheet (5) is soldered or -welded.
• 6. Wärmeübertrager nach einem der vorhergehenden Ansprüche, da¬ durch gekennzeichnet, dass im Gehäuse (2) in Sandwich-Bauweise zwischen dem äußeren Blech (3) und dem inneren Blech (5) ein Strö¬ mungskanal für eines der Betriebsmedien vorgesehen ist. • 6. Heat exchanger according to one of the preceding claims, da¬ by in that a Strö¬ is flow duct provided for one of the working media in the housing (2) sandwiched between the outer sheet (3) and the inner plate (5).
7. Wärmeübertrager nach einem der vorhergehenden Ansprüche, da¬ durch gekennzeichnet, dass im Gehäuse (2) in Sandwich-Bauweise in- nerhalb des inneren Blechs (5) Rohrbündel, Platten oder Scheibensta¬ pel angeordnet sind.7. Heat exchanger according to one of the preceding claims, da¬ characterized in that in the housing (2) in sandwich construction within the inner sheet (5) tube bundles, plates or Scheibensta¬ pel are arranged.
8. Wärmeübertrager nach einem der vorhergehenden Ansprüche, da¬ durch gekennzeichnet, dass das Gehäuse zumindest bereichsweise genau zwei Bleche aufweist, die insbesondere mit Abstandshaltern wie Rippen, Stegen, Wellen, Noppen oder dergleichen versehen sind.8. Heat exchanger according to one of the preceding claims, da¬ characterized in that the housing has at least partially exactly two sheets, which are in particular provided with spacers such as ribs, webs, shafts, knobs or the like.
9. Wärmeübertrager nach einem der vorhergehenden Ansprüche, da¬ durch gekennzeichnet, dass das Gehäuse jeweils in einander gegen- überliegend angeordneten Gehäusebereichen, insbesondere in zwei Gehäusebereichen, in Sandwich-Bauweise ausgebildet ist.9. Heat exchanger according to one of the preceding claims, da¬ characterized in that the housing is formed in each case in mutually opposite arranged housing areas, in particular in two housing areas, in sandwich construction.
10. Verwendung eines Wärmeübertragers (1 ) gemäß einem der Ansprüche 1 bis 9 als Abgaskühler, Ladeluft-/Kühlmittel-Kühler oder Ölkühler. 10. Use of a heat exchanger (1) according to one of claims 1 to 9 as an exhaust gas cooler, charge air / coolant radiator or oil cooler.
EP05764150A 2004-06-29 2005-06-29 Heat exchanger Active EP1763652B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004031567A DE102004031567A1 (en) 2004-06-29 2004-06-29 Heat exchanger
PCT/EP2005/006961 WO2006000457A1 (en) 2004-06-29 2005-06-29 Heat exchanger

Publications (2)

Publication Number Publication Date
EP1763652A1 true EP1763652A1 (en) 2007-03-21
EP1763652B1 EP1763652B1 (en) 2012-01-25

Family

ID=35033460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05764150A Active EP1763652B1 (en) 2004-06-29 2005-06-29 Heat exchanger

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Country Link
US (1) US20080011465A1 (en)
EP (1) EP1763652B1 (en)
AT (1) ATE543068T1 (en)
DE (1) DE102004031567A1 (en)
WO (1) WO2006000457A1 (en)

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Also Published As

Publication number Publication date
US20080011465A1 (en) 2008-01-17
EP1763652B1 (en) 2012-01-25
WO2006000457A1 (en) 2006-01-05
DE102004031567A1 (en) 2006-02-02
ATE543068T1 (en) 2012-02-15

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