DE19956166A1 - Silencer for turbocharger comprises one-piece, outer pipe with shoulders at either end, forming central buffer chamber, and concentric pipes fitted into this at inlet end, inner pipe being shorter than outer pipe of pair - Google Patents

Silencer for turbocharger comprises one-piece, outer pipe with shoulders at either end, forming central buffer chamber, and concentric pipes fitted into this at inlet end, inner pipe being shorter than outer pipe of pair

Info

Publication number
DE19956166A1
DE19956166A1 DE19956166A DE19956166A DE19956166A1 DE 19956166 A1 DE19956166 A1 DE 19956166A1 DE 19956166 A DE19956166 A DE 19956166A DE 19956166 A DE19956166 A DE 19956166A DE 19956166 A1 DE19956166 A1 DE 19956166A1
Authority
DE
Germany
Prior art keywords
outer pipe
pipe
silencer
shoulders
shorter
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
DE19956166A
Other languages
German (de)
Other versions
DE19956166B4 (en
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.)
DENKER, DIETRICH, PROF. DR.-ING., DE
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 DE19956166A priority Critical patent/DE19956166B4/en
Publication of DE19956166A1 publication Critical patent/DE19956166A1/en
Application granted granted Critical
Publication of DE19956166B4 publication Critical patent/DE19956166B4/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1233—Flow throttling or guiding by using expansion chambers in the air intake flow path
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise

Abstract

The silencer for a turbocharger comprises a one-piece, outer pipe (1) with shoulders at either end, forming a central buffer chamber (6). Concentric pipes (2, 3) fit into this at the inlet end, forming annular chambers (4, 5). The inner pipe (2) is shorter than the outer pipe (3) of the pair.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zur beitbandigen Absenkung insbesondere hochfrequenter Strömungsgeräusche bei gleichzeitiger Anwesenheit hoher Temperaturen und Drücke sowie geringen Bauräumen. Derartige Geräusche kommen z. B. bei Abgasturboladern vor, die infolge hoher Drehzahlen nicht beherrschbare Unwuchten sowie Störungen durch fertigungsbedingte Verzüge (z. B. Schaufeln) aufweisen.The present invention relates to a device for two-band lowering especially high-frequency flow noises with simultaneous presence of high Temperatures and pressures as well as small installation spaces. Such noises come e.g. B. with exhaust gas turbochargers, the unbalances that cannot be controlled due to high speeds as well as malfunctions due to production-related distortions (e.g. blades).

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.

Unter Berücksichtigung dieser Vorgaben wird eine geeignete Anordnung von Volumen- und Rohr - Kombinationen zur breitbandigen Absenkung von Strömungsgeräuschen insbesondere hochfrequenter Geräuschkomponenten um und über 10 kHz vorgeschlagen, die darüber hinaus noch hohe Temperaturen und Drücke beherrscht. Die i. a. vorherrschenden Temperaturen und die Belange der Dauerfestigkeit sprechen zumindest in Turboladernähe für den Einsatz metallischer Werkstoffe.Taking these requirements into account, a suitable arrangement of volume and Pipe combinations for the broadband reduction of flow noise in particular high-frequency noise components around and above 10 kHz suggested that above also masters high temperatures and pressures. The i. a. prevailing Temperatures and the concerns of fatigue strength speak at least near the turbocharger for the use of metallic materials.

Diese Vorgabe metallischer Werkstoffe erfordert neben der Funktion geeignete, kostengünstige Fertigungsverfahren, was aus einer speziellen Kombination von Außenmantel (1) und seitlich angeordneten Rohrstücken (2 und 3) realisiert ist. (vgl. Bild 1 und 2 (Variante 1)).In addition to the function, this specification of metallic materials requires suitable, inexpensive manufacturing processes, which is realized from a special combination of outer jacket ( 1 ) and laterally arranged pipe sections ( 2 and 3 ). (see Fig . 1 and 2 (variant 1)).

Der Außenmantel (1) ist aus einem Teil geformt, so daß ein Puffervolumen (6) vor in der Länge abgestimmten Rohrstücken (2) und (3) entsteht. Die in ihren Längen abgestimmten Rohrstücke (2) und (3) bilden ihrerseits Ringkammern (4) und (5). Das in diesen Ringkammern (4) und (5) befindliche Medium (z. B. Luft) trägt zu einem schwingungsfähigen Gebilde mit dem Puffervolumen (6) bei. Dieses schwingungsfähige Gebilde läßt sich z. B. zur Minderung von Strömungsgeräuschen über 10 kHz abstimmen: Die beteiligten Luftkomponenten werden zum Teil zu gegenphasigen Schwingungen angeregt, so daß Auslöscheffekte hochfrequente Schallanteile mindern.The outer jacket ( 1 ) is formed from one part, so that a buffer volume ( 6 ) is created in front of length-matched pipe sections ( 2 ) and ( 3 ). The tube pieces ( 2 ) and ( 3 ) matched in their length in turn form annular chambers ( 4 ) and ( 5 ). The medium (e.g. air) located in these annular chambers ( 4 ) and ( 5 ) contributes to an oscillatory structure with the buffer volume ( 6 ). This vibratory structure can be z. B. vote to reduce flow noise above 10 kHz: The air components involved are partially excited to phase oscillations, so that extinguishing effects reduce high-frequency sound components.

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 die Rohrstücke (2) und (3) jeweils in den erforderlichen Längen eingeschoben und befestigt werden.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 pipe sections ( 2 ) and ( 3 ) are inserted and fastened in the required lengths.

Der rohrförmige Anschluß (7) des Mantels (1) mit dem zugehörigen Rohrstück (2) sowie der Anschluß (8) lassen sich zur Aufnahme sich anschließender Rohrkomponenten oder anderer Bauteile nach Vorgaben entsprechend gestalten.The tubular connection ( 7 ) of the jacket ( 1 ) with the associated pipe section ( 2 ) and the connection ( 8 ) can be designed accordingly to accommodate subsequent pipe components or other components.

Eine weitere Variante, die im Gegensatz zur beschriebenen Variante 1 in Bild 2 im folgenden mit Variante 2 bezeichnet und in Bild 3 dargestellt ist, unterscheidet sich wie folgt:
Der Mantel (1) wird aus Gründen vereinfachter Fertigung nun mit einem Absatz (3a) versehen, der Aufgaben des Rohrstückes (3) der zuvor beschriebenen Variante 1 (Bild 2) zu übernehmen hat. Durch diese Kombination aus Absatz (3) und Rohrstück (2) werden Volumina wie Ringspalt (4) und Luftring (5a) gebildet, die mit dem Puffervolumen (6) kommunizieren.Another variant, which in contrast to variant 1 described in Figure 2 is referred to as variant 2 below and shown in Figure 3, differs as follows:
For reasons of simplified production, the jacket ( 1 ) is now provided with a shoulder ( 3 a) which has to take over the tasks of the pipe section ( 3 ) of the variant 1 described above ( picture 2). This combination of paragraph ( 3 ) and pipe section ( 2 ) forms volumes such as annular gap ( 4 ) and air ring ( 5 a), which communicate with the buffer volume ( 6 ).

Auch mit dieser Anordnung lassen sich besonders hochfrequente Strömungsgeräusche oberhalb 10 kHz unter Ausnutzung ähnlicher Effekte wie bei Variante 1 dargelegt, absenken.This arrangement also allows particularly high-frequency flow noises lower above 10 kHz using effects similar to those set out in variant 1.

Claims (8)

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 unterschiedlichen Durchmessern gefertigt ist, so daß ein Absatz gebildet wird.4. Apparatus according to claim 1 to 3, the outer jacket with different Diameters is made so that a paragraph is formed. 5. Vorrichtung nach Anspruch 1 bis 4, bei der Rohrstücke seitlich in den Außenmantel eingefügt werden.5. Apparatus according to claim 1 to 4, in the pipe pieces laterally in the outer jacket be inserted. 6. Vorrichtung nach Anspruch 1 bis 5, bei der Ringkammern aus Außenmantel und Rohrstücken gebildet werden.6. The device according to claim 1 to 5, in the annular chambers made of outer jacket and Pipe pieces are formed. 7. Vorrichtung nach Anspruch 1 bis 6, bei der über Einfügelänge und Durchmesser der Rohrstücke Ringkammern in unterschiedlichen Abmessungen gebildet werden.7. The device according to claim 1 to 6, in which the insertion length and diameter of the Pipe pieces of annular chambers are formed in different dimensions. 8. Vorrichtung nach Anspruch 1 bis 7, bei der das Außenrohr mit einem Formschlauch aus Metallgestrick zur Bedämpfung von Wandschwingungen umschlossen werden kann.8. The device according to claim 1 to 7, wherein the outer tube with a molded tube Metal mesh can be enclosed to dampen wall vibrations.
DE19956166A 1999-11-23 1999-11-23 Annular chamber damper Expired - Lifetime DE19956166B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19956166A DE19956166B4 (en) 1999-11-23 1999-11-23 Annular chamber damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19956166A DE19956166B4 (en) 1999-11-23 1999-11-23 Annular chamber damper

Publications (2)

Publication Number Publication Date
DE19956166A1 true DE19956166A1 (en) 2001-05-31
DE19956166B4 DE19956166B4 (en) 2011-02-17

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Cited By (5)

* 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
EP1865188A1 (en) * 2006-06-09 2007-12-12 Mann+Hummel Gmbh Vibration dampener for charged motors
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
CN1684139B (en) * 2004-04-13 2010-11-10 费斯托股份有限两合公司 Silencing unit
EP2805036A1 (en) * 2012-02-29 2014-11-26 Siemens Aktiengesellschaft Turbocompressor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017127305A1 (en) * 2017-11-20 2019-05-23 AT-Tec Attendorner Tube-Tec GmbH Pipe element for liquid lines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE760362C (en) * 1943-01-30 1951-07-26 Maschf Augsburg Nuernberg Ag Sound absorber in which the chambers enclose the pipe and are connected to it through slots like a branch filter
DE4440918A1 (en) * 1994-11-17 1996-05-23 Bayer Ag Device for sound insulation in pipes

Cited By (7)

* 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
CN1684139B (en) * 2004-04-13 2010-11-10 费斯托股份有限两合公司 Silencing unit
EP1865188A1 (en) * 2006-06-09 2007-12-12 Mann+Hummel Gmbh Vibration dampener for charged motors
FR2902155A1 (en) * 2006-06-09 2007-12-14 Mann & Hummel Gmbh NOISE ATTENUATOR AND ESPECIALLY NOISE GENERATED BY A MOTOR SUPERCURRENT BY A TURBOCHARGER
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
EP2805036A1 (en) * 2012-02-29 2014-11-26 Siemens Aktiengesellschaft Turbocompressor

Also Published As

Publication number Publication date
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8110 Request for examination paragraph 44
R020 Patent grant now final

Effective date: 20110619

R082 Change of representative

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