DE19956165A1 - Sound dampener consists of a pipe with outer casing and inner pipes, intermediate walls, and slits - Google Patents

Sound dampener consists of a pipe with outer casing and inner pipes, intermediate walls, and slits

Info

Publication number
DE19956165A1
DE19956165A1 DE19956165A DE19956165A DE19956165A1 DE 19956165 A1 DE19956165 A1 DE 19956165A1 DE 19956165 A DE19956165 A DE 19956165A DE 19956165 A DE19956165 A DE 19956165A DE 19956165 A1 DE19956165 A1 DE 19956165A1
Authority
DE
Germany
Prior art keywords
outer jacket
inner tube
pipe
outer casing
slits
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Withdrawn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
DE19956165A
Other languages
German (de)
Inventor
Marcus Tuerk
Dietrich Denker
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.)
Umfotec GmbH
Original Assignee
Umfotec Umformtechnik GmbH
Umfotec 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 Umfotec Umformtechnik GmbH, Umfotec GmbH filed Critical Umfotec Umformtechnik GmbH
Priority to DE19956165A priority Critical patent/DE19956165A1/en
Publication of DE19956165A1 publication Critical patent/DE19956165A1/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Withdrawn legal-status Critical Current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
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
    • F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages comprising at least one perforated tube extending from inlet to outlet of the silencer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/023—Helmholtz resonators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers
    • F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/40—Application in turbochargers

Abstract

The damper consists of a pipe with outer casing (1) in one piece and containing one or more constrictions so as to produce one or more intermediate walls (3) of varying widths. An inner pipe (4) is inserted sideways into the outer casing. The slits (5) are positioned so that openings in the outer casing are opposite overlaps in the pipe.

Description

Es wird eine geeignete Anordnung von Volumen- und Rohr-Kombinationen zur Absenkung von Strömungsgeräuschen vorgeschlagen, die darüber hinaus noch hohe Temperaturen und Drücke beherrscht. Derartige Anordnungen können z. B. bei Abgasturboladern von Verbrennungsmotoren eingesetzt werden. Beim Einsatz derartiger Anordnungen im Bus- oder Lkw-Bereich werden gegenüber Pkw-Anwendungen größere Rohrquerschnitte verwendet, so daß trotz kleiner Bauräume genügend Energie aus den Rohrquerschnitten entlang der Strömungsrichtung entzogen werden muß.There will be a suitable arrangement of volume and pipe combinations for lowering proposed by flow noises, which are still high temperatures and Mastered pressures. Such arrangements can e.g. B. in exhaust gas turbochargers from Internal combustion engines are used. When using such arrangements in the bus or truck area will have larger pipe cross sections compared to car applications used, so that despite the small installation space enough energy from the pipe cross sections must be withdrawn along the direction of flow.

Diese lästigen Geräusche werden sowohl über Luftschall durch die Ladeluftführung transportiert als auch über Luft- und Körperschall abgestrahlt, so daß hinsichtlich dieser Mechanismen Lösungen gefunden werden müssen. Dabei sind noch erschwerend Forderungen nach möglichst geringen Bauräumen und eine Realisierung wirtschaftlicher Verbindungen zur Bauteilumgebung und zur Gestaltung der Anbindungstechnik, wie z. B. der Rohranschlüsse einzuhalten.These annoying noises are both airborne through the charge air duct transported as well as radiated by airborne and structure-borne noise, so that with regard to this Mechanisms solutions need to be found. Doing so are aggravating Demands for the smallest possible installation space and a more economical implementation Connections to the component environment and the design of the connection technology, such as B. the Comply with pipe connections.

Die i. a. vorherrschenden Temperaturen und die Belange der Dauerfestigkeit sprechen zumindest in Turboladernähe für den Einsatz metallischer Werkstoffe. Diese Vorgabe metallischer Werkstoffe erfordert neben der Funktion geeignete, kostengünstige Fertigungsverfahren, was aus einer speziellen Kombination von Außenmantel (1) und Innenrohr (4) realisiert ist (vgl. Bild 1 und 2).The generally prevailing temperatures and the concerns of fatigue strength speak for the use of metallic materials, at least close to the turbocharger. In addition to the function, this specification of metallic materials requires suitable, cost-effective manufacturing processes, which is realized from a special combination of outer jacket ( 1 ) and inner tube ( 4 ) (see Figs . 1 and 2).

Der Außenmantel (1) ist aus einem Teil geformt, wobei entweder nur eine Kammer oder eine Reihe von Kammern (2) mit Zwischenwänden (3) sowie den Anschlüssen (6) und (7) gebildet werden. An die Anschlüsse (6) und (7) lassen sich direkt die erforderlichen Befestigungssyteme der jeweiligen Anwendung anbringen. Die Abmessungen der Zwischenwände (3) werden auf die Belange des Gesamtsystems abgestimmt. Sie können infolgedessen unterschiedliche Breiten aufweisen.The outer casing ( 1 ) is formed from one part, with either only one chamber or a series of chambers ( 2 ) having intermediate walls ( 3 ) and the connections ( 6 ) and ( 7 ) being formed. The required fastening systems for the respective application can be attached directly to the connections ( 6 ) and ( 7 ). The dimensions of the partition walls ( 3 ) are tailored to the needs of the overall system. As a result, they can have different widths.

Innerhalb des Außenmantels (1) befindet sich das mit Schlitzen (5) versehene Innenrohr (4). Dabei sind Lage, Breite und Anzahl der Schlitzanordnungen gegenüber den jeweiligen, zugehörigen Kammern für die beabsichtigen Wirkmechanismen von Bedeutung: Kammern (2) und Anordnung der Schlitze (5) sowie Kammerabmessungen lassen sich zu Kombinationsmechanismen aus λ/4- und Helmholtz-Resonatoren derart abstimmen, daß mehrere, z. B. zwei Frequenzbereiche um 3000-5000 sowie 7000-10000 Hz besonders bedämpft werden.The inner tube ( 4 ) provided with slots ( 5 ) is located within the outer jacket ( 1 ). The position, width and number of slot arrangements in relation to the respective associated chambers are important for the intended mechanisms of action: chambers ( 2 ) and arrangement of the slots ( 5 ) as well as chamber dimensions can be coordinated in this way with combination mechanisms made from λ / 4 and Helmholtz resonators that several, e.g. B. two frequency ranges around 3000-5000 and 7000-10000 Hz can be particularly damped.

Sollte neben diesen akustischen Maßnahmen zur Minderung der Strömungsgeräusche noch Bedarf zur Verringerung der Körperschallemission bestehen, so läßt sich zusätzlich der Außenmantel (1) über spezielle Gestricküberzüge bedämpfen.If, in addition to these acoustic measures to reduce the flow noise, there is still a need to reduce structure-borne noise, the outer jacket ( 1 ) can also be dampened using special knitted fabrics.

Die besondere Gestaltung des Außenmantels (1) wird durch eine kostengünstige Fertigung über geeignete Druckbeaufschlagung von Halbzeugrohren realisiert, so daß ein aufgeweiteter Außenmantel gebildet wird, in den das Innenrohr (4) eingeschoben und befestigt wird.The special design of the outer jacket ( 1 ) is realized by cost-effective production by suitable pressurization of semi-finished tubes, so that an expanded outer jacket is formed, into which the inner tube ( 4 ) is inserted and fastened.

Claims (11)

1. Vorrichtung zur Luftschallabsenkung von Strömungsgeräuschen von z. B. Turboladern an Verbrennungsmotoren1. Device for airborne noise reduction of flow noises from z. B. turbochargers Internal combustion engines 2. Vorrichtung nach Anspruch 1, die aus einem verformten Rohr einen Außenmantel besitzt.2. Device according to claim 1, which has an outer jacket from a deformed tube. 3. Vorrichtung nach Anspruch 1 bis 2, dessen Außenmantel durch z. B. Druckverformung aus einem Teil gefertigt wird.3. Device according to claim 1 to 2, the outer jacket by z. B. Compression deformation one part is manufactured. 4. Vorrichtung nach Anspruch 1 bis 3, dessen Außenmantel mit einer oder mehreren Einschnürungen gefertigt ist, so daß eine Zwischenwand oder mehrere Zwischenwände gebildet werden.4. Apparatus according to claim 1 to 3, the outer jacket with one or more Constrictions is made, so that one partition or several partitions be formed. 5. Vorrichtung nach Anspruch 1 bis 4, dessen Zwischenwände unterschiedliche Breiten aufweisen können.5. Apparatus according to claim 1 to 4, the partitions of different widths can have. 6. Vorrichtung nach Anspruch 1 bis 5, bei der durch Außenmantel und Zwischenwände aus einem Rohling sowie mit einem abgestimmten Innenrohr jeweils Hohlräume entstehen.6. The device according to claim 1 to 5, in which by the outer jacket and partitions a blank and with a coordinated inner tube each create cavities. 7. Vorrichtung nach Anspruch 1 bis 6, bei der ein Innenrohr seitlich in den Außenmantel eingefügt wird.7. The device according to claim 1 to 6, wherein an inner tube laterally in the outer jacket is inserted. 8. Vorrichtung nach Anspruch 1 bis 7, bei der das Innenrohr mit Schlitzen quer zur Längsrichtung (Strömungsrichtung) versehen wird.8. The device according to claim 1 to 7, wherein the inner tube with slots transverse to Longitudinal direction (flow direction) is provided. 9. Vorrichtung nach Anspruch 1 bis 8, bei der das Innenrohr durch Schlitze so unterbrochen wird, daß beim Zusammenbau mit dem Außenmantel einerseits Öffnungen und andererseits Rohrüberstände an den Zwischenwänden des Außenmantels entstehen.9. The device according to claim 1 to 8, wherein the inner tube is interrupted by slots will that when assembled with the outer jacket on the one hand openings and on the other Pipe protrusions occur on the partition walls of the outer jacket. 10. Vorrichtung nach Anspruch 1 bis 9, bei der ein Schlitz oder mehrere Schlitze je Kammer angeordnet sind.10. The device according to claim 1 to 9, wherein one slot or more slots per chamber are arranged. 11. Vorrichtung nach Anspruch 1 bis 10, bei der der Außenmantel mit einem Formschlauch aus Metallgestrick zur Bedämpfung von Wandschwingungen umschlossen werden kann.11. The device according to claim 1 to 10, wherein the outer jacket with a molded tube can be enclosed in knitted metal to dampen wall vibrations.
DE19956165A 1999-11-23 1999-11-23 Sound dampener consists of a pipe with outer casing and inner pipes, intermediate walls, and slits Withdrawn DE19956165A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19956165A DE19956165A1 (en) 1999-11-23 1999-11-23 Sound dampener consists of a pipe with outer casing and inner pipes, intermediate walls, and slits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19956165A DE19956165A1 (en) 1999-11-23 1999-11-23 Sound dampener consists of a pipe with outer casing and inner pipes, intermediate walls, and slits

Publications (1)

Publication Number Publication Date
DE19956165A1 true DE19956165A1 (en) 2001-05-31

Family

ID=7929937

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19956165A Withdrawn DE19956165A1 (en) 1999-11-23 1999-11-23 Sound dampener consists of a pipe with outer casing and inner pipes, intermediate walls, and slits

Country Status (1)

Country Link
DE (1) DE19956165A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1369577A1 (en) 2002-06-07 2003-12-10 Trelleborg Fluid Systems Geie Air intake silencing device especially for turbocharged engines or air conditioner and intake circuit with such a device
EP1375848A1 (en) * 2002-06-18 2004-01-02 Benteler Automobiltechnik GmbH Device for reducing the noise emissions and method for production thereof
FR2912201A1 (en) 2007-02-02 2008-08-08 Trelleborg Fluid & Acoustic Solutions Tfas Noise attenuation device for internal combustion engine, has axial intake duct communicated with resonating chamber, where duct has two sections which are integrated to each other by its enlarged sections
WO2010086719A1 (en) * 2009-01-30 2010-08-05 Eaton Corporation Broadband noise resonator
DE102009024728A1 (en) * 2009-06-12 2010-12-16 Bayerische Motoren Werke Aktiengesellschaft Air guiding component comprises tubular resonator, particularly charge air hose for internal combustion engine with turbocharger, where resonator is introduced in air guiding component
US10364928B2 (en) 2013-09-03 2019-07-30 Umfotec Gmbh Resonator

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1369577A1 (en) 2002-06-07 2003-12-10 Trelleborg Fluid Systems Geie Air intake silencing device especially for turbocharged engines or air conditioner and intake circuit with such a device
FR2840653A1 (en) 2002-06-07 2003-12-12 Trelleborg Automotive France NOISE MITIGATION DEVICE ON AN AIR INTAKE CIRCUIT FOR A SUPERIOR PREFERENCE MOTOR OR AIR CONDITIONING APPARATUS AND ADMISSION CIRCUIT EQUIPPED WITH SUCH A DEVICE
EP1375848A1 (en) * 2002-06-18 2004-01-02 Benteler Automobiltechnik GmbH Device for reducing the noise emissions and method for production thereof
FR2912201A1 (en) 2007-02-02 2008-08-08 Trelleborg Fluid & Acoustic Solutions Tfas Noise attenuation device for internal combustion engine, has axial intake duct communicated with resonating chamber, where duct has two sections which are integrated to each other by its enlarged sections
EP1956281A1 (en) 2007-02-02 2008-08-13 Trelleborg Fluid & Acoustic Solutions (TFAS) Noise-reduction device for a gaseous fluid intake circuit
WO2010086719A1 (en) * 2009-01-30 2010-08-05 Eaton Corporation Broadband noise resonator
US7934581B2 (en) 2009-01-30 2011-05-03 Eaton Corporation Broadband noise resonator
CN102369359A (en) * 2009-01-30 2012-03-07 伊顿公司 Broadband noise resonator
CN102369359B (en) * 2009-01-30 2016-11-09 伊顿公司 Broadband noise resonator
DE102009024728A1 (en) * 2009-06-12 2010-12-16 Bayerische Motoren Werke Aktiengesellschaft Air guiding component comprises tubular resonator, particularly charge air hose for internal combustion engine with turbocharger, where resonator is introduced in air guiding component
US10364928B2 (en) 2013-09-03 2019-07-30 Umfotec Gmbh Resonator

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