EP1395743B1 - Silencieux - Google Patents

Silencieux Download PDF

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Publication number
EP1395743B1
EP1395743B1 EP01967080A EP01967080A EP1395743B1 EP 1395743 B1 EP1395743 B1 EP 1395743B1 EP 01967080 A EP01967080 A EP 01967080A EP 01967080 A EP01967080 A EP 01967080A EP 1395743 B1 EP1395743 B1 EP 1395743B1
Authority
EP
European Patent Office
Prior art keywords
outer tube
insert
silencer according
openings
perforated wall
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.)
Expired - Lifetime
Application number
EP01967080A
Other languages
German (de)
English (en)
Other versions
EP1395743A1 (fr
EP1395743B9 (fr
EP1395743B2 (fr
Inventor
Franz Josef Wolf
Udo GÄRTNER
Josef Hohmann
Anton Wolf
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.)
Woco Industrietechnik GmbH
Original Assignee
Woco Industrietechnik 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
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Application filed by Woco Industrietechnik GmbH filed Critical Woco Industrietechnik GmbH
Publication of EP1395743A1 publication Critical patent/EP1395743A1/fr
Publication of EP1395743B1 publication Critical patent/EP1395743B1/fr
Publication of EP1395743B9 publication Critical patent/EP1395743B9/fr
Application granted granted Critical
Publication of EP1395743B2 publication Critical patent/EP1395743B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M35/1211—Flow throttling or guiding by using inserts in the air intake flow path, e.g. baffles, throttles or orifices; Flow guides
    • 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
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • 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
    • F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
    • 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
    • F02M35/1227—Flow throttling or guiding by using multiple air intake flow paths, e.g. bypass, honeycomb or pipes opening into an expansion chamber
    • 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
    • F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
    • F02M35/1266—Intake silencers ; Sound modulation, transmission or amplification using resonance comprising multiple chambers or compartments

Definitions

  • the invention relates to a silencer for noise-laden gases leading pipes according to the preamble of claim 1.
  • Combinations of the abovementioned muffler types are of course widely known in the art.
  • a special combination of sound damping mechanisms is for example from the DE 197 03 414 A1 known.
  • a disadvantage of the known silencer are the high flow losses due to the annular diaphragms, and moreover, there is still no satisfactory tunability of the frequencies to be damped, both in terms of the range and the broadband before.
  • the invention is therefore based on the object, the generic, from the EP 0 834 011 B1 develop known silencer to the effect that the disadvantages of the prior art are overcome, in particular in the frequency range of 1 to 20 kHz, a tunable damping is possible.
  • the invention is thus based on the surprising finding that a multiple combination of reflection mufflers and resonance mufflers allows a tuning of a frequency range to be damped from 1 to 20 kHz without significant flow losses in a compact design.
  • the corresponding combination is based on the use of one or more hole walls, so that the ring diaphragms function both as reflection walls and to delimit Helmholtz resonators to form absorption silencers in addition to the ⁇ / 4 resonators of the insert, without too considerable flow losses to lead.
  • an inventive silencer 1 comprises an outer tube 2 with an inlet side 3, an outlet 4 and a contact surface 5, an insert 6 with a contact surface 7 and closed on one side openings or blind holes 8, a plurality of Ring diaphragms 9, 9 ', 9 ", 9"', 9 "", and pinhole apertures 10, 10 ', 11, 11' with holes 12, 12 ', 13, 13'.
  • annular apertures 9, 9 ', 9 ", 9"', 9 “” between the outer tube 2 and the insert 6 are arranged so that the contact surface 5 between the outer tube 2 and the annular apertures 9, 9 ', 9 “, 9 “', 9” “and the contact surface 7 between the annular apertures 9, 9', 9", 9 "', 9” “and the insert 6 extend, wherein the insert 6 extends substantially concentrically within the outer tube 2.
  • the blind holes 8 each open to the sub-lines, are partly on opposite surfaces, preferably offset, arranged and have a depth which is tuned to a quarter of the wavelength of the Frezudämpfenden from the noise spectrum frequency.
  • the annular apertures 9, 9 ', 9 ", 9"', 9 "" and the outer tube 2 four resonance chambers are limited. Said resonance chambers are either additional reflection mufflers or resonance mufflers, depending on the configuration of the hole wall 10, 10 ', 11, 11'.
  • the hole wall 10, 10 ' is formed of a thin steel sheet, for example, while a resonance muffler is in the case where the hole wall 11, 11' a Wall thickness in a range of 0.6 to 5 mm, so that each hole 13, 13 'forms with the resonance chamber tunable to the absorption band to be damped by the frequency-tunable Helmholtz resonator.
  • the perforated walls 10, 10 ', 11, 11' not only provide an additional possibility of tuning a frequency band to be damped, but at the same time also reduce the flow losses due to vortices on the annular diaphragms 9, 9 ', 9 ", 9 "', 9""certainly.
  • the noise damper 1 is overall improved considerably over the prior art.
  • each individual sound-absorbing resonance chamber is ultimately determined only by the oscillating air volume with respect to its resonant frequency, and not by geometric shapes, so that the noise damper 1 of the invention with the smallest possible design practically any available installation space is adaptable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Inorganic Insulating Materials (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (13)

  1. Amortisseur de bruit (1) pour des conduites de gaz bruyantes, en particulier pour une conduite d'admission et/ou une conduite d'échappement d'un moteur à combustion interne, comportant
    un tube extérieur (2) ayant un côté d'admission (3) et un côté d'échappement (4),
    une pluralité de diaphragmes circulaires (9, 9', 9", 9"', 9"") ayant respectivement une surface extérieure sous la forme d'une surface de contact (5), qui est en liaison avec la surface intérieure du tube extérieur (2), et
    au moins une paroi perforée (10, 10', 11, 11'), qui s'étend entre au moins deux diaphragmes circulaires (9, 9', 9", 9"', 9"") avec une surface extérieure sous la forme d'une surface de contact (7'), qui est en liaison avec au moins une surface intérieure des deux diaphragmes circulaires (9, 9', 9", 9"', 9""), au moins une cavité de résonnance étant constituée entre les deux diaphragmes circulaires (9, 9', 9", 9"', 9""), la paroi perforée (10, 10', 11, 11') et le tube extérieur (2),
    caractérisé en ce que
    au moins un insert (6) ayant une surface extérieure sous la forme d'une surface de contact (7) et ayant une pluralité d'ouvertures (8) fermées d'un côté, les diaphragmes circulaires (9, 9', 9", 9"', 9"") étant agencés entre le tube extérieur (2) et l'insert (6) de sorte que la surface de contact (5) s'étend entre le tube extérieur (2) et les diaphragmes circulaires (9, 9', 9", 9"', 9"") et la surface de contact (7) s'étend entre les diaphragmes circulaires (9, 9', 9", 9"', 9"") et l'insert (6), et l'insert (6) formant des sous-conduites pour l'écoulement de gaz dans l'amortisseur de bruit (1), et les ouvertures (8) fermées d'un côté débouchant dans les sous-conduites et présentant une profondeur de λ/4, par rapport à la longueur d'ondes λ d'une fréquence à amortir.
  2. Amortisseur de bruit selon la revendication 1, caractérisé en ce que l'insert (6) présente des parois intérieures essentiellement sous forme de panneaux, munies, des deux côtés, d'ouvertures (8) fermées d'un côté, ces parois étant agencées essentiellement en forme de croix ou en forme d'étoile, en coupe radiale, et s'étendant de préférence essentiellement sur la totalité de la longueur axiale du tube extérieur (2).
  3. Amortisseur de bruit selon la revendication 2, caractérisé en ce que
    les ouvertures (8) fermées d'un côté sont agencées en quinconce des deux côtés d'une paroi intérieure.
  4. Amortisseur de bruit selon l'une quelconque des revendications précédentes, caractérisé en ce que
    les ouvertures (8) fermées d'un côté sont agencées essentiellement en rangées du côté d'admission (3) jusqu'au côté d'échappement (4), les profondeurs des ouvertures (8) fermées d'un côté étant identiques dans une rangée et différentes de rangée à rangée, et ayant de préférence des profondeurs croissantes du côté d'admission (3) jusqu'au côté d'échappement (4).
  5. Amortisseur de bruit selon l'une quelconque des revendications précédentes, caractérisé en ce que
    l'intervalle entre les diaphragmes circulaires (9, 9', 9", 9"', 9"") est différent, et de préférence croissant du côté d'admission (3) jusqu'au côté d'échappement (4).
  6. Amortisseur de bruit selon l'une quelconque des revendications précédentes, caractérisé en ce que
    au moins une cavité de résonance et au moins un trou (13, 13') dans la paroi perforée (11, 11') de la cavité de résonance forment un résonateur de Helmholtz, qui peut être accordé à une bande de fréquence à amortir par l'intermédiaire du volume de la cavité de résonance, de la superficie de la section du trou (13, 13') dans la paroi perforée (11, 11') de la cavité de résonance, et de l'épaisseur de paroi de la paroi perforée (11, 11') de la cavité de résonance au niveau du trou (13, 13').
  7. Amortisseur de bruit selon la revendication 6, caractérisé en ce que
    l'épaisseur de la paroi perforée (11, 11') est de 0,6 à 5 mm, de préférence de 1 à 3 mm.
  8. Amortisseur de bruit selon l'une quelconque des revendications précédentes, caractérisé en ce que
    une ou plusieurs des parois perforées (10, 10', 11, 11') agencées les unes derrière les autres du côté d'admission jusqu'au côté d'échappement s'étend(ent) sur la totalité de la longueur axiale du tube extérieur (2), de préférence de manière concentrique à l'intérieur du tube extérieur (2).
  9. Amortisseur de bruit selon la revendication 7 ou 8, caractérisé en ce qu'une pluralité de cavités de résonance sont prévues, des chambres de résonance de préférence voisines des bandes de fréquence à amortir se chevauchant au moins partiellement et/ou la cavité de résonance formant des silencieux à réflexion, et/ou des silencieux à absorption.
  10. Amortisseur de bruit selon l'une quelconque des revendications précédentes, caractérisé en ce que
    les diaphragmes circulaires (9, 9', 9", 9"', 9"") sont munis d'ouvertures fermées d'un côté, qui débouchent dans les sous-conduites et présentent une profondeur de λ/4, la profondeur augmentant de préférence du côté d'admission (3) jusqu'au côté d'échappement (4).
  11. Amortisseur de bruit selon l'une quelconque des revendications précédentes, caractérisé en ce que
    le tube extérieur (2), les diaphragmes circulaires (9, 9', 9", 9"', 9""), l'insert (6) et/ou la paroi perforée ou bien les parois perforées (10, 10', 11, 11') sont constitués d'un métal, en particulier de l'aluminium, d'une matière plastique résistante à la chaleur, en particulier une matière plastique renforcée par des fibres, de l'ébonite et/ou une céramique, comme un matériau poreux.
  12. Amortisseur de bruit selon l'une quelconque des revendications précédentes, caractérisé en ce que
    le tube extérieur (2) et les diaphragmes circulaires (9, 9', 9", 9"', 9"") et/ou la paroi perforée (10, 10', 11, 11') et l'insert (6) et/ou les diaphragmes circulaires (9, 9', 9", 9"', 9"") et la paroi perforée (10, 10', 11, 11') sont démoulés en une seule fois, de préférence sous la forme d'une pièce d'aluminium coulée sous pression.
  13. Amortisseur de bruit selon l'une quelconque des revendications précédentes, caractérisé en ce que
    le tube extérieur (2), l'insert (6), les ouvertures (8) fermées d'un côté dans l'insert (6) et/ou les trous (12, 12', 13, 13') dans la paroi perforée (10, 10', 11, 11') sont essentiellement à symétrie de révolution, de préférence circulaires en coupe radiale.
EP01967080A 2001-06-13 2001-06-13 Silencieux Expired - Lifetime EP1395743B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2001/006893 WO2002101227A1 (fr) 2001-06-13 2001-06-13 Silencieux

Publications (4)

Publication Number Publication Date
EP1395743A1 EP1395743A1 (fr) 2004-03-10
EP1395743B1 true EP1395743B1 (fr) 2008-01-30
EP1395743B9 EP1395743B9 (fr) 2008-06-18
EP1395743B2 EP1395743B2 (fr) 2011-08-24

Family

ID=8164453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01967080A Expired - Lifetime EP1395743B2 (fr) 2001-06-13 2001-06-13 Silencieux

Country Status (6)

Country Link
US (1) US6802388B2 (fr)
EP (1) EP1395743B2 (fr)
AT (1) ATE385288T1 (fr)
DE (1) DE50113553D1 (fr)
ES (1) ES2300357T5 (fr)
WO (1) WO2002101227A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP2161424A1 (fr) 2008-09-04 2010-03-10 WOCO Industrietechnik GmbH Dispositif de transport de fluide et amortisseur de bruit ainsi qu'installation de gaz d'échappement dotée d'un tel dispositif de transport de fluide

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US7048500B2 (en) 2004-03-01 2006-05-23 Donaldson Company, Inc. Silencer for ventilation system and methods
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US7631726B2 (en) * 2004-06-28 2009-12-15 Mahle International Gmbh Silencer for air induction system and high flow articulated coupling
US20060065478A1 (en) * 2004-09-30 2006-03-30 Rockwell David M Compressor sound suppression
US7377954B2 (en) * 2005-01-27 2008-05-27 Fleetguard, Inc. Performance air filtration cartridge
US7497301B2 (en) * 2005-01-27 2009-03-03 Fleetguard, Inc. Tubular acoustic silencer
EP1732062B1 (fr) * 2005-06-07 2013-08-14 Alstom Technology Ltd Silencieux
DE202006012949U1 (de) * 2006-08-23 2007-12-27 Mann + Hummel Gmbh Geräuschdämpfer für eine Brennkraftmaschine
JP2008231979A (ja) * 2007-03-19 2008-10-02 Roki Co Ltd 消音チャンバーダクト
JP4771546B2 (ja) * 2007-03-22 2011-09-14 株式会社Ｒｏｋｉ 消音ダクト
US7546898B2 (en) * 2007-07-30 2009-06-16 Hewlett-Packard Development Company, L.P. Noise reduction with resonatance chamber
US7601209B1 (en) 2008-01-10 2009-10-13 Cummins Filtration Ip Inc. Multiple flow filter with acoustic silencing
US7934581B2 (en) 2009-01-30 2011-05-03 Eaton Corporation Broadband noise resonator
US8651800B2 (en) * 2010-06-04 2014-02-18 Gm Global Technology Operations Llp Induction system with air flow rotation and noise absorber for turbocharger applications
DE102010038634A1 (de) * 2010-07-29 2012-02-02 Poroson Gmbh Luftfilter
KR101422113B1 (ko) * 2013-04-26 2014-07-22 목포해양대학교 산학협력단 통기통로 또는 통수통로 둘레에 중첩된 차음용 공진챔버를 갖는 통기형 또는 통수형 방음벽
CN103277170A (zh) * 2013-05-21 2013-09-04 奇瑞汽车股份有限公司 一种节流阀体
EP2871636B1 (fr) * 2013-11-08 2021-01-06 Volvo Car Corporation Système de réduction du bruit
KR101578840B1 (ko) * 2014-04-14 2015-12-23 (주)에이씨씨기술 내연기관의 연소효율 향상장치
DE102014115898B4 (de) 2014-10-31 2019-07-25 Dietrich Denker Resonator
FR3036731B1 (fr) * 2015-05-29 2017-05-19 Novares France Dispositif d'attenuation des bruits de bouche et des bruits rayonnes
DE112016002188T5 (de) * 2015-06-11 2018-01-25 Eaton Corporation Integrierter Laderresonator
US10533452B2 (en) * 2017-07-19 2020-01-14 Garrett Transportation I Inc. Acoustic damper with barrier member configured to dampen acoustic energy propogating upstream in gas flow
US11293664B2 (en) * 2018-03-06 2022-04-05 Gulfstream Aerospace Corporation Dual tube silencer for separate gas flows
US11043199B2 (en) * 2018-04-25 2021-06-22 Toyota Motor Engineering & Manufacturing North America, Inc. Sparse acoustic absorber
CN108711417A (zh) * 2018-07-20 2018-10-26 湖州山海环保工程有限公司 一种基于工业生产的消声设备
US11391252B2 (en) * 2018-12-16 2022-07-19 Garrett Transportation I Inc. Turbocharger system including acoustic damper for attenuating aerodynamically generated noise from compressor
US11322126B2 (en) * 2018-12-20 2022-05-03 Toyota Motor Engineering & Manufacturing North America, Inc. Broadband sparse acoustic absorber
WO2020154295A1 (fr) 2019-01-21 2020-07-30 Toledo Molding & Die, Inc. Atténuateur de hautes fréquences à fibres en ligne
CN116670386A (zh) 2020-07-14 2023-08-29 托莱多制模和冲模股份有限公司 设有集成宽带调谐器的车辆空气过滤器外壳
CN113530637B (zh) * 2021-06-25 2023-03-21 沪东中华造船(集团)有限公司 一种天然气焚烧塔排气管消音装置及其安装方法
CN115306607B (zh) * 2022-08-15 2023-07-21 哈尔滨工程大学 一种用于涡轮增压器的组合式进气消声结构
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2161424A1 (fr) 2008-09-04 2010-03-10 WOCO Industrietechnik GmbH Dispositif de transport de fluide et amortisseur de bruit ainsi qu'installation de gaz d'échappement dotée d'un tel dispositif de transport de fluide

Also Published As

Publication number Publication date
EP1395743A1 (fr) 2004-03-10
WO2002101227A1 (fr) 2002-12-19
US20030173146A1 (en) 2003-09-18
ATE385288T1 (de) 2008-02-15
EP1395743B9 (fr) 2008-06-18
ES2300357T5 (es) 2011-11-17
ES2300357T3 (es) 2008-06-16
DE50113553D1 (de) 2008-03-20
US6802388B2 (en) 2004-10-12
EP1395743B2 (fr) 2011-08-24

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