WO2008071263A1 - Shielding component, in particular heat shield - Google Patents

Shielding component, in particular heat shield Download PDF

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Publication number
WO2008071263A1
WO2008071263A1 PCT/EP2007/009440 EP2007009440W WO2008071263A1 WO 2008071263 A1 WO2008071263 A1 WO 2008071263A1 EP 2007009440 W EP2007009440 W EP 2007009440W WO 2008071263 A1 WO2008071263 A1 WO 2008071263A1
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WIPO (PCT)
Prior art keywords
cavity
shielding
shield layers
shielding component
medium
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Application number
PCT/EP2007/009440
Other languages
German (de)
French (fr)
Inventor
Bruno Malinek
Beate Zika-Beyerlein
Original Assignee
Elringklinger Ag
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.)
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Publication date
Application filed by Elringklinger Ag filed Critical Elringklinger Ag
Priority to EP07819474A priority Critical patent/EP2102034A1/en
Publication of WO2008071263A1 publication Critical patent/WO2008071263A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0876—Insulating elements, e.g. for sound insulation for mounting around heat sources, e.g. exhaust pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0838—Insulating elements, e.g. for sound insulation for engine compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0884—Insulating elements, e.g. for sound insulation for mounting around noise sources, e.g. air blowers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation

Definitions

  • Shielding component in particular heat shield
  • the invention relates to a shielding, in particular heat shield, with at least two shield layers which define at least one cavity between them. Moreover, the invention relates to a method for producing such a Ablebauerss.
  • Multi-layer shielding components are known in various embodiments and find widespread use, in particular in motor vehicle technology. Designed as a heat shield, such components have the task to prevent the heat emitted by radiation and / or convection heat of engines and their components, such as turbochargers, catalysts, etc.
  • the shield layers When used as a heat shield, the shield layers must be designed with regard to their material properties and their dimensions so that they can cope with the extreme values of the thermal load occurring during operation. This leads in the known solutions to a complex and cost-intensive design, because there is no way to actively influence the temperature occurring directly at the heat shield material during operation.
  • the thermal insulation effect of known solutions is also unsatisfactory, even if in the cavity between the shield layers as insulating a heat-insulating material, such as quartz sand or a similar mineral filler, is installed, which in nach- turban way also leads to an increase in the construction weight.
  • Comparable solutions are also shown in DE 102 53 508 B3, which uses highly dispersed silicic acid as an insulating layer between sheet metal blanks designed as cover layers, which is incompressible like quartz sand.
  • the object of the invention is to provide a shielding component which meets the requirements to be imposed during operation, in particular when used as a heat shield, and which can take on additional functional tasks.
  • this object is achieved by a shielding component having the features of claim 1 in its entirety.
  • an essential feature of the invention is that a heat exchanger function is implemented in the shielding component in addition to its shielding effect.
  • a cooling or heating of the Ablebauers be effected, regardless of the output by radiation and / or convection of the heat source heat. It is understood that by active cooling of the shielding component this can be carried out in a lightweight construction and without the use of expensive, particularly high heat-resistant materials.
  • Independent heating may be beneficial during cold start phases, for example, where the breakdown component is associated with lambda probes or catalysts intended to reach operating temperature as quickly as possible.
  • the heat exchanger function the additional possibility to use the heat of the heated, emerging from the shielding medium useful as process heat, for example in conjunction with a vehicle heating system.
  • liquid or gaseous heat exchange media can be used.
  • the heat exchanging portion extends over the majority of the shielding surface by interconnecting the shielding layers along their side edges to form a cavity extending substantially over the entire shielding zone formed by the shielding layers.
  • the cavity may be provided with a filling of a material having an open-cell structure. Due to the fact that in this case the medium flow flows through the cells of the filling material, a highly enlarged contact or heat exchange surface is available for the heat transport. A particularly good heat exchange effect is obtained when a material of good thermal conductivity, for example an open-cell metal foam, is provided as the filling. Such materials, for example based on aluminum, steel or stainless steel, not only act as a heat-insulating, but also form an effective sound insulation.
  • the invention also provides a method for producing a shielding part according to the invention, in particular a heat shield, wherein the method has the features of claim 8 in its entirety.
  • a special feature of the method is accordingly that, in a shielding component formed from at least two shield layers, the shield layers are separated from each other by generating an overpressure by, for example, using a pressurized fluid to expand the cavity, wherein before forming the overprint, the shield layers along their side edges and forming a marginal seal are stacked.
  • the procedure is such that, to form the marginal seal, the adjacent shield layers in this sealing region are deformed to their yield point to obtain a seamless transition point.
  • Such a method allows a particularly rational production, because the tight connection of the shield layers, without edge-side flanging would be required, is obtained.
  • Figure 1 is a plan view of the side facing away from a heat source side of an embodiment of the Ablebauers in the form of a heat shield.
  • FIG. 2 is a broken drawn partial longitudinal section as indicated in Fig. 1 with the section line H-II and Fig. 3 a of FIG. 2 corresponding partial longitudinal section of a second embodiment.
  • the shielding part forms a heat shield.
  • FIG. 1 shows the outside of the heat shield, which faces away from the relevant heat source at the installation position. This outer side is formed by a first shielding layer 1 made of a stainless steel sheet with a generally rectangular outline, in a symmetrical shape relative to a central longitudinal axis 4.
  • the heat shield is double-layered.
  • the second shield layer 3 which forms the inside of the heat shield facing the heat source, is visible only in the detail sections of FIGS. 2 and 3.
  • FIGS. 2 and 3 a section adjacent to a side edge 5 of the screen layers 1 and 3 is visible in each case.
  • the inner shielding layer 3 forms a substantially planar shielding surface, while the front shielding layer 1 extends slightly outward from the shielding surface, so that there is a cavity 7 between outer, first shielding layer 1 and inner, second shielding layer 3, see FIG 2 and 3 visible side edge 5 - this also applies to the other side edges 9, 11 and 13 - are the two shield layers 1 and 3 to form a seamless transition point 15, which is comparable to a weld is connected.
  • This compound can be made by a pressing process, which transforms the material to the yield point. Alternatively, a usual welding process could take place at the side edges or a flanging could be carried out.
  • the connection by cold or hot forming is manufacturing technology advantageous and is distinguished from a flanging by absolute tightness.
  • the outer shielding layer 1 is bulged out of the shielding surface, with slightly protruding from the curved lateral surface bead-like bulges 17 protrude, which are interconnected via raised connecting webs 19. This structuring forms a kind of reinforcing ribs for the outer shielding layer.
  • an inlet opening 21 is provided centrally on the side edge 9.
  • outlet openings 23 are located on the opposite side edge 13 laterally located outlet openings 23. The connected to the openings 21 and 23 via suitable connections piping system for supply and removal of the heat exchange medium is not shown in the drawing.
  • a filling 25 is located in the cavity 7.
  • This is a material with an open-cell structure, so that there are pores or free spaces through which the heat exchange medium can flow.
  • filler materials u. a.
  • Metal foams in question in particular in the form of open-cell foams based on aluminum, steel or stainless steel.
  • SRSS slip reaction foam sinter
  • a so-called hollow sphere structure can be used, whereby defined individual cells, preferably constructed of metallic hollow spheres, are connected to one another to form cellular structures.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Thermal Insulation (AREA)
  • Exhaust Silencers (AREA)

Abstract

A shielding component, in particular heat shield, with at least two shielding layers (1, 3) which delimit a cavity (7) between them, is characterized in that, for media transportation, in particular in the form of a heat exchange medium, through the cavity (7), the shielding component is provided with at least one entry opening (21) and at least one exit opening (23) for the medium.

Description

ElringKlinger AG, Max-Eyth-Str. 2, 72581 Dettingen/Erms ElringKlinger AG, Max-Eyth-Str. 2, D-72581 Dettingen / Erms
Abschirmbauteil, insbesondere HitzeschildShielding component, in particular heat shield
Die Erfindung betrifft ein Abschirmbauteil, insbesondere Hitzeschild, mit mindestens zwei Schirmlagen, die zwischen sich zumindest einen Hohlraum begrenzen. Außerdem betrifft die Erfindung ein Verfahren zum Herstellen eines derartigen Abschirmbauteiles.The invention relates to a shielding, in particular heat shield, with at least two shield layers which define at least one cavity between them. Moreover, the invention relates to a method for producing such a Abschirmbauteiles.
Mehrlagige Abschirmbauteile sind in unterschiedlichsten Ausführungsformen bekannt und finden insbesondere in der Kraftfahrzeugtechnik weitverbreitete Anwendung. Als Hitzeschild konzipiert, haben solche Bauteile die Aufgabe, die durch Strahlung und/oder Konvektion abgegebene Wärme von Motoren und deren Komponenten, wie Turbolader, Katalysatoren etc., abzuhalten.Multi-layer shielding components are known in various embodiments and find widespread use, in particular in motor vehicle technology. Designed as a heat shield, such components have the task to prevent the heat emitted by radiation and / or convection heat of engines and their components, such as turbochargers, catalysts, etc.
Bei einem Einsatz als Hitzeschild müssen die Schirmlagen hinsichtlich ihrer Werkstoffeigenschaften und ihrer Dimensionierung so ausgelegt sein, dass sie den beim Betrieb auftretenden Extremwerten der thermischen Belastung gewachsen sind. Dies führt bei den bekannten Lösungen zu einer aufwendigen und kosten intensiven Bauweise, weil keine Möglichkeit gegeben ist, im Betrieb die auftretende Temperatur direkt am Hitzeschildmaterial aktiv zu beeinflussen. Die Wärmedämmwirkung bekannter Lösungen ist auch nicht zufriedenstellend, selbst wenn im Hohlraum zwischen den Schirmlagen als Isolierlage ein wärmedämmendes Material, beispielsweise Quarzsand oder ein ähnlicher mineralischer Füllstoff, eingebaut ist, was in nach- teiliger Weise auch zu einer Erhöhung des Baugewichtes führt. Vergleichbare Lösungen zeigt auch die DE 102 53 508 B3, die als Isolierlage zwischen als Decklagen ausgebildeten Blechplatinen hoch dispergierte Kieselsäure einsetzt, die wie Quarzsand inkompressibel ist.When used as a heat shield, the shield layers must be designed with regard to their material properties and their dimensions so that they can cope with the extreme values of the thermal load occurring during operation. This leads in the known solutions to a complex and cost-intensive design, because there is no way to actively influence the temperature occurring directly at the heat shield material during operation. The thermal insulation effect of known solutions is also unsatisfactory, even if in the cavity between the shield layers as insulating a heat-insulating material, such as quartz sand or a similar mineral filler, is installed, which in nach- teilig way also leads to an increase in the construction weight. Comparable solutions are also shown in DE 102 53 508 B3, which uses highly dispersed silicic acid as an insulating layer between sheet metal blanks designed as cover layers, which is incompressible like quartz sand.
Im Hinblick auf den Stand der Technik stellt sich die Erfindung die Aufgabe, ein Abschirmbauteil zur Verfügung zu stellen, das den im Betrieb zu stellenden Anforderungen, insbesondere bei einem Einsatz als Hitzeschild, in besonderem Maße gerecht wird und weitere Funktionsaufgaben mit über- nehmen kann.In view of the prior art, the object of the invention is to provide a shielding component which meets the requirements to be imposed during operation, in particular when used as a heat shield, and which can take on additional functional tasks.
Erfindungsgemäß ist diese Aufgabe durch ein Abschirmbauteil gelöst, das die Merkmale des Patentanspruches 1 in seiner Gesamtheit aufweist.According to the invention, this object is achieved by a shielding component having the features of claim 1 in its entirety.
Danach besteht eine wesentliche Besonderheit der Erfindung darin, dass in das Abschirmbauteil zusätzlich zu seiner Abschirmwirkung eine Wärmetauscherfunktion implementiert ist. Hieraus resultieren mehrere Vorteile. Zum einen eröffnet sich hierdurch die Möglichkeit, die am Hitzeschildmaterial auftretende Temperatur unmittelbar, und zwar zweckgerichtet, in ge- wünschter Weise aktiv zu beeinflussen. So kann, je nach Beschaffenheit, Strömungsrate und Temperatur des Wärmeaustauschmediums, eine Abkühlung oder Erwärmung des Abschirmbauteiles bewirkt werden, unabhängig von der durch Strahlung und/oder Konvektion von der Hitzequelle abgegebenen Wärme. Es versteht sich, dass durch aktive Kühlung des Abschirm- bauteiles dieses in leichtgewichtiger Bauweise und ohne Einsatz teurer, besonders hochwärmefester Werkstoffe ausgeführt werden kann. Eine unabhängige Erwärmung kann während Kaltstartphasen beispielsweise in den Fällen günstig sein, wo das Abschtrmbauteil Lambdasonden oder Katalysatoren zugeordnet ist, die so schnell wie möglich ihre Betriebstemperatur erreichen sollen. Schließlich eröffnet sich durch die Wärmetauscherfunktion die zusätzliche Möglichkeit, die Wärme des erhitzten, aus dem Abschirmbauteil austretenden Mediums sinnvoll als Prozesswärme auszunutzen, beispielsweise in Verbindung mit einem Fahrzeugheizungssystem.Thereafter, an essential feature of the invention is that a heat exchanger function is implemented in the shielding component in addition to its shielding effect. This results in several advantages. On the one hand, this opens up the possibility of actively influencing the temperature occurring on the heat shield material directly and purposefully in the desired manner. Thus, depending on the nature, flow rate and temperature of the heat exchange medium, a cooling or heating of the Abschirmbauteiles be effected, regardless of the output by radiation and / or convection of the heat source heat. It is understood that by active cooling of the shielding component this can be carried out in a lightweight construction and without the use of expensive, particularly high heat-resistant materials. Independent heating may be beneficial during cold start phases, for example, where the breakdown component is associated with lambda probes or catalysts intended to reach operating temperature as quickly as possible. Finally opened by the heat exchanger function, the additional possibility to use the heat of the heated, emerging from the shielding medium useful as process heat, for example in conjunction with a vehicle heating system.
Je nach Gegebenheiten wie Einsatzzweck, Temperaturniveau und anderen Parametern können übliche flüssige oder gasförmige Wärmeaustauschmedien zum Einsatz kommen.Depending on conditions such as purpose, temperature level and other parameters, conventional liquid or gaseous heat exchange media can be used.
Vorzugsweise erstreckt sich am Abschirmbauteil der wärmeaustauschende Bereich über den Großteil der Schirmfläche, indem zur Bildung eines Hohlraums, der sich im Wesentlichen über die gesamte, durch die Schirmlagen gebildete Abschirmzone erstreckt, die Schirmlagen längs ihrer Seitenränder miteinander verbunden sind.Preferably, at the shielding member, the heat exchanging portion extends over the majority of the shielding surface by interconnecting the shielding layers along their side edges to form a cavity extending substantially over the entire shielding zone formed by the shielding layers.
Vorzugsweise sind Eingangsöffnungen und Ausgangsöffnungen für das Medium an zumindest einem Seitenrand vorgesehen, wobei, um den Medientransport strömungsgünstig zu gestalten, Eingangsöffnungen und Ausgangsöffnungen für das Medium vorzugsweise an einander gegenüberliegenden Seitenrändern vorgesehen sind.Preferably, inlet openings and outlet openings for the medium are provided on at least one side edge, wherein to make the media transport streamlined, inlet openings and outlet openings for the medium are preferably provided on opposite side edges.
Bei besonders vorteilhaften Ausführungsbeispielen kann der Hohlraum mit einer Füllung aus einem Material mit offenzelliger Struktur versehen sein. Dadurch, dass hierbei der Medienstrom die Zellen des Füllmaterials durch- strömt, steht für den Wärmetransport eine in höchstem Maße vergrößerte Kontakt- oder Wärmetauschfläche zur Verfügung. Eine besonders gute Wärmeaustauschwirkung ergibt sich, wenn als Füllung ein Material guter Wärmeleitfähigkeit, beispielsweise ein offenzelliger Metallschaum, vorgesehen ist. Derartige Materialien, beispielsweise auf Aluminium-, Stahl- oder Edel- stahlbasis, wirken zudem nicht nur wärmedämmend, sondern bilden auch eine wirksame Schalldämmung. Gegenstand der Erfindung ist auch ein Verfahren zum Herstellen eines erfindungsgemäßen Abschirmteiles, insbesondere eines Hitzeschildes, wobei das Verfahren die Merkmale des Patentanspruches 8 in seiner Gesamtheit aufweist.In particularly advantageous embodiments, the cavity may be provided with a filling of a material having an open-cell structure. Due to the fact that in this case the medium flow flows through the cells of the filling material, a highly enlarged contact or heat exchange surface is available for the heat transport. A particularly good heat exchange effect is obtained when a material of good thermal conductivity, for example an open-cell metal foam, is provided as the filling. Such materials, for example based on aluminum, steel or stainless steel, not only act as a heat-insulating, but also form an effective sound insulation. The invention also provides a method for producing a shielding part according to the invention, in particular a heat shield, wherein the method has the features of claim 8 in its entirety.
Eine Besonderheit des Verfahrens besteht demgemäß darin, dass bei einem aus mindestens zwei Schirmlagen gebildeten Abschirmbauteil die Schirmlagen durch Erzeugen eines Überdrucks voneinander separiert werden, in- dem beispielsweise ein Druckfluid zum Aufweiten des Hohlraumes benutzt wird, wobei vor Ausbildung des Überdrucks die Schirmlagen entlang ihrer Seitenränder und Bildung einer randseitigen Dichtung aufeinandergelegt werden.A special feature of the method is accordingly that, in a shielding component formed from at least two shield layers, the shield layers are separated from each other by generating an overpressure by, for example, using a pressurized fluid to expand the cavity, wherein before forming the overprint, the shield layers along their side edges and forming a marginal seal are stacked.
Vorzugsweise wird hierbei so vorgegangen, dass zur Bildung der randseitigen Dichtung die einander benachbarten Schirmlagen in diesem Dichtungsbereich bis zu ihrer Fließgrenze zum Erhalt einer nahtlosen Übergangsstelle umgeformt werden. Ein solches Verfahren ermöglicht eine besonders rationelle Fertigung, weil die dichte Verbindung der Schirmlagen, ohne dass randseitige Bördelungen erforderlich wären, erhalten wird.Preferably, in this case, the procedure is such that, to form the marginal seal, the adjacent shield layers in this sealing region are deformed to their yield point to obtain a seamless transition point. Such a method allows a particularly rational production, because the tight connection of the shield layers, without edge-side flanging would be required, is obtained.
Nachstehend ist die Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen im Einzelnen erläutert. Es zeigen:The invention with reference to embodiments shown in the drawings will be explained in detail. Show it:
Fig. 1 eine Draufsicht auf die von einer Hitzequelle abgewandte Seite eines Ausführungsbeispieles des Abschirmbauteiles in Form eines Hitzeschildes;Figure 1 is a plan view of the side facing away from a heat source side of an embodiment of the Abschirmbauteiles in the form of a heat shield.
Fig. 2 einen abgebrochen gezeichneten Teillängsschnitt wie in Fig. 1 mit der Schnittlinie H-Il angegeben und Fig. 3 einen der Fig. 2 entsprechenden Teillängsschnitt eines zweiten Ausführungsbeispieles. In der Zeichnung ist die Erfindung anhand von Ausführungsbeispielen erläutert, bei denen das Abschirmteil ein Hitzeschild bildet. Die Fig. 1 zeigt die Außenseite des Hitzeschildes, die bei der Einbauposition von der betref- fenden Hitzequelle abgewandt ist. Diese Außenseite ist durch eine erste Schirmlage 1 aus einem Edelstahlblech mit einem im großen Ganzen recht- eckförmigen Umriss gebildet, in einer zu einer zentralen Längsachse 4 symmetrischen Gestalt. Bei den vorliegenden Ausführungsbeispielen ist das Hitzeschild zweilagig. Die zweite Schirmlage 3, die die der Hitzequelle zugewandte Innenseite des Hitzeschildes bildet, ist lediglich in den Detailschnitten der Fig. 2 und 3 sichtbar.Fig. 2 is a broken drawn partial longitudinal section as indicated in Fig. 1 with the section line H-II and Fig. 3 a of FIG. 2 corresponding partial longitudinal section of a second embodiment. In the drawing, the invention is explained with reference to embodiments in which the shielding part forms a heat shield. FIG. 1 shows the outside of the heat shield, which faces away from the relevant heat source at the installation position. This outer side is formed by a first shielding layer 1 made of a stainless steel sheet with a generally rectangular outline, in a symmetrical shape relative to a central longitudinal axis 4. In the present embodiments, the heat shield is double-layered. The second shield layer 3, which forms the inside of the heat shield facing the heat source, is visible only in the detail sections of FIGS. 2 and 3.
In Fig. 2 und 3 ist jeweils ein an einen Seitenrand 5 der Schirmlagen 1 und 3 angrenzender Abschnitt sichtbar. Wie gezeigt, bildet die innere Schirmla- ge 3 eine im Wesentlichen ebene Abschirmfläche, während die vordere Schirmlage 1 aus der Abschirmfläche leicht gewölbt nach außen verläuft, sodass zwischen äußerer, erster Schirmlage 1 und innerer, zweiter Schirmlage 3 ein Hohlraum 7 vorhanden ist, siehe Fig. 2. An dem in Fig. 2 und 3 sichtbaren Seitenrand 5 - dies gilt in entsprechender Weise auch für die übrigen Seitenränder 9, 11 und 13 - sind die beiden Schirmlagen 1 und 3 unter Ausbildung einer nahtlosen Übergangsstelle 15, die einer Schweißstelle vergleichbar ist, verbunden. Diese Verbindung kann durch einen Pressvorgang, der den Werkstoff bis zur Fließgrenze umformt, hergestellt werden. Alternativ könnte an den Seitenrändern ein üblicher Schweißvor- gang stattfinden oder eine Umbördelung vorgenommen werden. Die Verbindung durch Kalt- oder Warmumformung ist jedoch fertigungstechnisch vorteilhafter und zeichnet sich gegenüber einer Umbördelung durch absolute Dichtheit aus.In FIGS. 2 and 3, a section adjacent to a side edge 5 of the screen layers 1 and 3 is visible in each case. As shown, the inner shielding layer 3 forms a substantially planar shielding surface, while the front shielding layer 1 extends slightly outward from the shielding surface, so that there is a cavity 7 between outer, first shielding layer 1 and inner, second shielding layer 3, see FIG 2 and 3 visible side edge 5 - this also applies to the other side edges 9, 11 and 13 - are the two shield layers 1 and 3 to form a seamless transition point 15, which is comparable to a weld is connected. This compound can be made by a pressing process, which transforms the material to the yield point. Alternatively, a usual welding process could take place at the side edges or a flanging could be carried out. However, the connection by cold or hot forming is manufacturing technology advantageous and is distinguished from a flanging by absolute tightness.
Wie erwähnt, ist die äußere Schirmlage 1 aus der Abschirmfläche ausgewölbt, wobei aus der gewölbten Mantelfläche leicht vorstehend geformte wulstartige Wölbungen 17 vorstehen, die über erhabene Verbindungsstege 19 miteinander verbunden sind. Diese Strukturierung bildet eine Art Verstärkungsrippen für die äußere Schirmlage 1.As mentioned, the outer shielding layer 1 is bulged out of the shielding surface, with slightly protruding from the curved lateral surface bead-like bulges 17 protrude, which are interconnected via raised connecting webs 19. This structuring forms a kind of reinforcing ribs for the outer shielding layer. 1
Als Einlass für das betreffende, den Hohlraum 7 durchströmende Wärmeaustauschmedium ist am Seitenrand 9 eine Eingangsöffnung 21 mittig vorgesehen. Für die Abfuhr des Wärmeaustauschmediums aus dem Hohlraum 7 befinden sich am dazu gegenüberliegenden Seitenrand 13 seitlich gelegene Ausgangsöffnungen 23. Das mit den Öffnungen 21 und 23 über ge- eignete Anschlüsse verbundene Leitungssystem für Zufuhr und Abfuhr des Wärmeaustauschmediums ist in der Zeichnung nicht dargestellt.As an inlet for the relevant, the cavity 7 by flowing heat exchange medium, an inlet opening 21 is provided centrally on the side edge 9. For the removal of the heat exchange medium from the cavity 7 are located on the opposite side edge 13 laterally located outlet openings 23. The connected to the openings 21 and 23 via suitable connections piping system for supply and removal of the heat exchange medium is not shown in the drawing.
Das in der Teildarstellung der Fig. 3 verdeutlichte zweite Ausführungsbeispiel unterscheidet sich gegenüber Fig. 2 dadurch, dass sich im Hohlraum 7 eine Füllung 25 befindet. Bei dieser handelt es sich um ein Material mit offenzelliger Struktur, sodass Poren oder Freiräume vorhanden sind, die vom Wärmeaustauschmedium durchströmbar sind. Als Füllstoffmaterialien kommen u. a. Metallschäume in Frage, insbesondere in Form offenzelliger Schäume auf Aluminium-, Stahl- oder Edelstahlbasis. Für den Erhalt des Me- tallschaumes lässt sich beispielsweise ein Verfahren einsetzen, wie es durch die DE 40 18 360 C1 vorgegeben ist. Ein weiteres Verfahren zum Herstellen von Metallschaum, insbesondere in Form von Aluminium- und Nickelschäumen, ergibt sich durch das so genannte SchlickerReaktionsSchaumSin- ter (SRSS)-Verfahren. Ferner kann eine so genannte Hohlkugelstruktur zum Einsatz kommen, wobei definiert herstellbare Einzelzellen, vorzugsweise aufgebaut aus metallischen Hohlkugeln, zu zellularen Strukturen miteinander verbunden werden.The illustrated in the partial view of FIG. 3 second embodiment differs from FIG. 2 in that in the cavity 7, a filling 25 is located. This is a material with an open-cell structure, so that there are pores or free spaces through which the heat exchange medium can flow. As filler materials u. a. Metal foams in question, in particular in the form of open-cell foams based on aluminum, steel or stainless steel. To obtain the metal foam, it is possible, for example, to use a method as prescribed by DE 40 18 360 C1. Another method for producing metal foam, in particular in the form of aluminum and nickel foams, results from the so-called slip reaction foam sinter (SRSS) method. Furthermore, a so-called hollow sphere structure can be used, whereby defined individual cells, preferably constructed of metallic hollow spheres, are connected to one another to form cellular structures.
Der Einsatz offenzelliger Strukturen erhöht nicht nur die Wärmeaustausch- Wirkung durch die entsprechende Vergrößerung der Kontakt- oder Wärmeaustauschfläche im Strömungsweg des den Hohlraum 7 durchströmenden Wärmeaustauschmediums, sondern die Lage des Füüungsrnateriais trägt auch zur Verbesserung der Wärmedämmung des Hitzeschildes bei. Da die in Frage kommenden, abzuschirmenden Hitzequellen vielfach auch Schallquellen sind, stellt die durch das poröse Füllungsmaterial bewirkte Schall- dämmung einen weiteren Vorteil dar. The use of open-cell structures not only increases the heat exchange effect by the corresponding increase in the contact or heat exchange surface in the flow path of the cavity 7 flowing through Heat exchange medium, but the location of the Füüungsrnateriais also contributes to the improvement of the heat insulation of the heat shield. Since the heat sources which can be screened in many cases are also sound sources, the sound insulation caused by the porous filling material represents a further advantage.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Abschirmbauteil, insbesondere Hitzeschild, mit mindestens zwei Schirmlagen (1, 3), die zwischen sich einen Hohlraum (7) begrenzen, dadurch gekennzeichnet, dass für einen Medientransport, insbesondere in Form eines Wärmeaustauschmediums, durch den Hohlraum (7) hindurch das Abschirmbauteil mit mindestens einer Eingangsöffnung1. shielding, in particular heat shield, with at least two shield layers (1, 3) defining a cavity (7) between them, characterized in that for a media transport, in particular in the form of a heat exchange medium, through the cavity (7) through the shielding with at least one entrance opening
(21) und mindestens einer Ausgangsöffnung (23) für das Medium versehen ist.(21) and at least one outlet opening (23) is provided for the medium.
2. Abschirmbauteil nach Anspruch 1, dadurch gekennzeichnet, dass zur Bildung eines Hohlraumes (7), der sich im Wesentlichen über die gesamte, durch die Schirmlagen (1, 3) gebildete Abschirmzone erstreckt, die Schirmlagen (1, 3) längs ihrer Seitenränder (5, 9, 11, 13) miteinander verbunden sind.2. shielding component according to claim 1, characterized in that to form a cavity (7) which extends substantially over the entire, by the shield layers (1, 3) formed Abschirmzone, the shield layers (1, 3) along their side edges ( 5, 9, 11, 13) are interconnected.
3. Abschirmbauteil nach Anspruch 2, dadurch gekennzeichnet, dass Eingangsöffnungen (21) und Ausgangsöffnungen (23) für das Medium an zumindest einem Seitenrand (9, 13) vorgesehen sind.3. Shielding component according to claim 2, characterized in that inlet openings (21) and outlet openings (23) for the medium are provided on at least one side edge (9, 13).
4. Abschirmbauteil nach Anspruch 3, dadurch gekennzeichnet, dass Ein- gangsöffnungen (21) und Ausgangsöffnungen (23) für das Medium an einander gegenüberliegenden Seitenrändern (9, 13) vorgesehen sind.4. Shielding component according to claim 3, characterized in that inlet openings (21) and outlet openings (23) for the medium are provided on mutually opposite side edges (9, 13).
5. Abschirmbauteil nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Hohlraum (7) mit einer Füllung (25) aus einem Ma- terial mit offenzelliger Struktur versehen ist.5. Shielding component according to one of claims 1 to 4, characterized in that the cavity (7) is provided with a filling (25) made of a material with an open-cell structure.
6. Abschirmbauteil nach Anspruch 5, dadurch gekennzeichnet, dass als eine Füllung (25) bildendes Material ein offenzelliger Metallschaum vorgesehen ist. 6. shielding component according to claim 5, characterized in that as a filling (25) forming material an open-cell metal foam is provided.
7. Abschirmbauteil nach Anspruch 6, dadurch gekennzeichnet, dass ein offenzelliger Schaum auf Aluminium-, Stahl- oder Edelstahlbasis vorgesehen ist.7. Shielding component according to claim 6, characterized in that an open-cell foam is provided on aluminum, steel or stainless steel base.
8. Verfahren zum Herstellen eines Abschirmbauteiles nach einem der Ansprüche 1 bis 7, insbesondere eines Hitzeschildes, das mindestens zwei Schirmlagen (1, 3) aufweist, die zwischen sich zumindest einen Hohlraum (7) begrenzen, der für ein ihn durchströmenden Medium mindestens eine Eingangs- (21) und eine Ausgangsöffnung (23) für das8. A method for producing a Abschirmbauteiles according to one of claims 1 to 7, in particular a heat shield having at least two shield layers (1, 3) defining at least one cavity between them (7), for at least one input for a medium flowing through it - (21) and an outlet opening (23) for the
Medium aufweist, dadurch gekennzeichnet, dass zum Erzeugen des jeweiligen Hohlraumes (7) unter Verschließen betreffender Öffnungen (21, 23) und unter Bildung eines Überdrucks die Schirmlagen (1, 3) voneinander separiert werden.Medium, characterized in that for generating the respective cavity (7) with closing of respective openings (21, 23) and forming an overpressure, the shield layers (1, 3) are separated from each other.
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass vor Ausbildung des Überdrucks die Schirmlagen (1, 3) entlang ihrer Seitenränder (5, 9, 11, 13) unter Bildung einer randseitigen Dichtung aufeinandergelegt werden.9. The method according to claim 8, characterized in that prior to formation of the overpressure, the shield layers (1, 3) along their side edges (5, 9, 11, 13) are stacked to form a marginal seal.
10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass zur Bildung der randseitigen Dichtung die einander benachbarten Schirmlagen (1, 3) in diesem Dichtungsbereich bis zu ihrer Fließgrenze zum Erhalt einer nahtlosen Übergangsstelle (15) umgeformt werden.10. The method according to claim 9, characterized in that to form the peripheral seal, the adjacent shield layers (1, 3) in this sealing area to its yield point to obtain a seamless transition point (15) are formed.
1 1. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass die nahtlose Übergangsstelle (15) der Schirmlagen (1, 3) durch Warmumformung erzeugt wird. 1 1. A method according to claim 10, characterized in that the seamless transition point (15) of the shield layers (1, 3) is produced by hot forming.
PCT/EP2007/009440 2006-12-14 2007-10-31 Shielding component, in particular heat shield WO2008071263A1 (en)

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DE102006058989.0 2006-12-14
DE200610058989 DE102006058989A1 (en) 2006-12-14 2006-12-14 Shielding component, in particular heat shield

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013034320A1 (en) * 2011-09-06 2013-03-14 Federal-Mogul Sealing Systems Gmbh Shield device
DE102012110268A1 (en) * 2012-10-26 2014-04-30 Elringklinger Ag Improved heat shielding system
WO2014202700A1 (en) * 2013-06-19 2014-12-24 Elringklinger Ag Method for producing a ceramic shielding part and ceramic shielding part and use thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4046875A1 (en) * 2021-02-19 2022-08-24 Volvo Truck Corporation A noise shield arrangement comprising a thermally conductive element
US20230108070A1 (en) * 2021-10-01 2023-04-06 GM Global Technology Operations LLC Bubble cover to reduce noise and vibration

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1962488A1 (en) * 1968-12-13 1970-11-26 Dunlop Co Ltd Heat exchanger element
FR2132483A1 (en) * 1971-04-06 1972-11-17 Ostbo John
EP0486427A1 (en) * 1990-11-12 1992-05-20 Rieter Automotive (International) Ag Heat shield adapted for recycling
EP0903415A2 (en) * 1997-09-22 1999-03-24 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Structure expansée
EP0935058A2 (en) * 1998-02-06 1999-08-11 Isuzu Ceramics Research Institute Co., Ltd. Radiators and soundproofing engine enclosure designs
JP2000088490A (en) * 1998-09-14 2000-03-31 Toyota Motor Corp Heat exchanger
GB2345040A (en) * 1998-12-18 2000-06-28 Rover Group Fluid reservoir
DE10061430A1 (en) * 2000-12-09 2002-06-13 Daimler Chrysler Ag Vehicle heating and cooling system comprises a body inner lining through which a fluid flows, with liner spacer members
US6415757B1 (en) * 1998-04-22 2002-07-09 Visteon Global Technologies, Inc. Fluid-cooled heat shield for temperature sensitive automotive components
DE10253508B3 (en) 2002-07-19 2004-01-22 Thyssenkrupp Stahl Ag Semifinished product in the form of a sheet metal plate for a structural component of a motor vehicle or a machine with integrated heat and / or sound insulation, as well as a method for producing such a structural component
US20050257919A1 (en) 2004-05-10 2005-11-24 Thermo-Tec High Performance Automotive, Inc. Fluid-cooled heat shield and system
DE102004056294A1 (en) 2004-11-22 2006-05-24 Audi Ag Tool for deforming a workpiece using a high pressure forming method comprises a base body and inserts which are integrated into the base body in the region of a holding recess and/or in a deforming recess

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2750457A1 (en) * 1976-12-21 1978-06-22 Gen Electric THERMAL INSULATION STRUCTURE
DE4307818A1 (en) * 1993-03-12 1994-09-15 Hans Dr Viesmann Wall element
DE4426097A1 (en) * 1994-07-22 1996-01-25 Kloeckner Stahl Gmbh Process for the production of hollow body structures from sheet metal
DE19723943C1 (en) * 1997-06-06 1999-02-04 Payen Goetze Gmbh Heat shield
DE10153139A1 (en) * 2001-10-27 2003-05-08 Bayerische Motoren Werke Ag Thermal internal pressure forming process
DE102004014248A1 (en) * 2004-03-24 2005-10-13 Gencer, Erhan, Dr. Vacuum insulation panel comprising cover plates, grid structures and distance pieces encased in a plastic cover is joined to a vacuum pump and a pressure regulator, and is maintained at a specified internal pressure

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1962488A1 (en) * 1968-12-13 1970-11-26 Dunlop Co Ltd Heat exchanger element
FR2132483A1 (en) * 1971-04-06 1972-11-17 Ostbo John
EP0486427A1 (en) * 1990-11-12 1992-05-20 Rieter Automotive (International) Ag Heat shield adapted for recycling
EP0903415A2 (en) * 1997-09-22 1999-03-24 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Structure expansée
EP0935058A2 (en) * 1998-02-06 1999-08-11 Isuzu Ceramics Research Institute Co., Ltd. Radiators and soundproofing engine enclosure designs
US6415757B1 (en) * 1998-04-22 2002-07-09 Visteon Global Technologies, Inc. Fluid-cooled heat shield for temperature sensitive automotive components
JP2000088490A (en) * 1998-09-14 2000-03-31 Toyota Motor Corp Heat exchanger
GB2345040A (en) * 1998-12-18 2000-06-28 Rover Group Fluid reservoir
DE10061430A1 (en) * 2000-12-09 2002-06-13 Daimler Chrysler Ag Vehicle heating and cooling system comprises a body inner lining through which a fluid flows, with liner spacer members
DE10253508B3 (en) 2002-07-19 2004-01-22 Thyssenkrupp Stahl Ag Semifinished product in the form of a sheet metal plate for a structural component of a motor vehicle or a machine with integrated heat and / or sound insulation, as well as a method for producing such a structural component
US20050257919A1 (en) 2004-05-10 2005-11-24 Thermo-Tec High Performance Automotive, Inc. Fluid-cooled heat shield and system
DE102004056294A1 (en) 2004-11-22 2006-05-24 Audi Ag Tool for deforming a workpiece using a high pressure forming method comprises a base body and inserts which are integrated into the base body in the region of a holding recess and/or in a deforming recess

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2102034A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013034320A1 (en) * 2011-09-06 2013-03-14 Federal-Mogul Sealing Systems Gmbh Shield device
DE102012110268A1 (en) * 2012-10-26 2014-04-30 Elringklinger Ag Improved heat shielding system
WO2014202700A1 (en) * 2013-06-19 2014-12-24 Elringklinger Ag Method for producing a ceramic shielding part and ceramic shielding part and use thereof

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EP2102034A1 (en) 2009-09-23

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