EP1381025A3 - Sound damping device having a Helmholtz resonator for installations with pulsating gas flows - Google Patents

Sound damping device having a Helmholtz resonator for installations with pulsating gas flows Download PDF

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Publication number
EP1381025A3
EP1381025A3 EP03013618A EP03013618A EP1381025A3 EP 1381025 A3 EP1381025 A3 EP 1381025A3 EP 03013618 A EP03013618 A EP 03013618A EP 03013618 A EP03013618 A EP 03013618A EP 1381025 A3 EP1381025 A3 EP 1381025A3
Authority
EP
European Patent Office
Prior art keywords
damping device
flow channel
gas flows
gas flow
connection neck
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Withdrawn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
EP03013618A
Other languages
German (de)
French (fr)
Other versions
EP1381025A2 (en
Inventor
Jan Dr. Krüger
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.)
Eberspaecher Exhaust Technology GmbH and Co KG
Original Assignee
J Eberspaecher 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 J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP1381025A2 publication Critical patent/EP1381025A2/en
Publication of EP1381025A3 publication Critical patent/EP1381025A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00013—Reducing thermo-acoustic vibrations by active means

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid Mechanics (AREA)
  • Exhaust Silencers (AREA)

Abstract

Die vorliegende Erfindung betrifft eine Geräuschdämpfungsvorrichtung (1) zur Reduktion von Mündungsgeräuschen bei Anlagen mit pulsierenden Gasströmungen, insbesondere bei einer Frischluftansauganlage oder einer Abgasanlage einer Brennkraftmaschine. Die Geräuschdämpfungsvorrichtung (1) weist einen Helmholtz-Resonator (2) auf, der über zwei verschieden dimensionierte Verbindungshälse (4, 5) mit einem Gasströmungskanal (6) verbunden ist, in dem ein pulsierendes Gas strömt. Die Kammer (3) kommuniziert über den ersten Verbindungshals (4) permanent mit dem Gasströmungskanal (6). Der zweite Verbindungshals (5) ist mittels eines Schaltglieds (8) zwischen einem aktiviertem Zustand, in dem die Kammer (3) über den zweiten Verbindungshals (5) mit dem Gasströmungskanal (6) kommuniziert, und einem deaktiviertem Zustand umschaltbar, in dem die Kammer (3) über den zweiten Verbindungshals (5) nicht mit dem Gasströmungskanal (6) kommuniziert.

Figure 00000001
The invention relates to a noise damping device (1) for reducing muzzle noise in systems with pulsating gas flows, in particular in a fresh air intake system or an exhaust system of an internal combustion engine. The noise damping device (1) has a Helmholtz resonator (2), which is connected via two differently dimensioned connecting necks (4, 5) to a gas flow channel (6) in which a pulsating gas flows. The chamber (3) communicates permanently with the gas flow channel (6) via the first connection neck (4). The second connection neck (5) can be switched by means of a switching element (8) between an activated state in which the chamber (3) communicates with the gas flow channel (6) via the second connection neck (5) and an deactivated state in which the chamber (3) does not communicate with the gas flow channel (6) via the second connection neck (5).
Figure 00000001
EP03013618A 2002-07-11 2003-06-16 Sound damping device having a Helmholtz resonator for installations with pulsating gas flows Withdrawn EP1381025A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10231238 2002-07-11
DE2002131238 DE10231238B4 (en) 2002-07-11 2002-07-11 Noise damping device

Publications (2)

Publication Number Publication Date
EP1381025A2 EP1381025A2 (en) 2004-01-14
EP1381025A3 true EP1381025A3 (en) 2004-12-08

Family

ID=29723835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03013618A Withdrawn EP1381025A3 (en) 2002-07-11 2003-06-16 Sound damping device having a Helmholtz resonator for installations with pulsating gas flows

Country Status (2)

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EP (1) EP1381025A3 (en)
DE (1) DE10231238B4 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7690478B2 (en) 2006-09-15 2010-04-06 Visteon Global Technologies, Inc. Continuously variable tuned resonator
JP5815523B2 (en) * 2009-08-03 2015-11-17 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Low limiting resonator with adjustable frequency characteristics for use in compressor nebulizer systems
EP3434876A1 (en) * 2017-07-25 2019-01-30 Siemens Aktiengesellschaft Combustor apparatus and method of operating combustor apparatus
EP3738494A1 (en) * 2019-05-14 2020-11-18 Koninklijke Philips N.V. Noise reduction device
CN110322868A (en) * 2019-06-06 2019-10-11 江苏科技大学 A kind of driving frequency-conversion Helmholz resonance device and its frequency modulation noise-reduction method
KR20210026356A (en) * 2019-08-30 2021-03-10 현대자동차주식회사 Variable wheel resonator system for vehicle
CN110751938A (en) * 2019-10-12 2020-02-04 江苏科技大学 Helmholtz resonator and working method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546733A (en) * 1983-03-22 1985-10-15 Nippondenso Co., Ltd. Resonator for internal combustion engines
JPH03963A (en) * 1989-05-29 1991-01-07 Honda Motor Co Ltd Intake air noise reduction device for internal combustion engine
DE4305333C1 (en) * 1993-02-20 1994-07-07 Fasag Ag Suhr Noise damping device for reducing muzzle noise in systems with pulsating gas flows
DE19618432A1 (en) * 1996-05-08 1997-11-13 Mann & Hummel Filter Intake device for an internal combustion engine
WO1999017012A1 (en) * 1997-10-01 1999-04-08 Filterwerk Mann+Hummel Gmbh Silencer with a bypass resonator
DE10004991A1 (en) * 2000-02-04 2001-08-09 Volkswagen Ag Helmholtz resonator with variable resonance frequency for damping IC engine air intake or exhaust gas noise uses controlled stops for altering neck opening cross-sections

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546733A (en) * 1983-03-22 1985-10-15 Nippondenso Co., Ltd. Resonator for internal combustion engines
JPH03963A (en) * 1989-05-29 1991-01-07 Honda Motor Co Ltd Intake air noise reduction device for internal combustion engine
DE4305333C1 (en) * 1993-02-20 1994-07-07 Fasag Ag Suhr Noise damping device for reducing muzzle noise in systems with pulsating gas flows
DE19618432A1 (en) * 1996-05-08 1997-11-13 Mann & Hummel Filter Intake device for an internal combustion engine
WO1999017012A1 (en) * 1997-10-01 1999-04-08 Filterwerk Mann+Hummel Gmbh Silencer with a bypass resonator
DE10004991A1 (en) * 2000-02-04 2001-08-09 Volkswagen Ag Helmholtz resonator with variable resonance frequency for damping IC engine air intake or exhaust gas noise uses controlled stops for altering neck opening cross-sections

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 105 (M - 1092) 13 March 1991 (1991-03-13) *

Also Published As

Publication number Publication date
EP1381025A2 (en) 2004-01-14
DE10231238A1 (en) 2004-01-29
DE10231238B4 (en) 2004-06-03

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