WO2013078927A1 - Silencieux - Google Patents

Silencieux Download PDF

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Publication number
WO2013078927A1
WO2013078927A1 PCT/CN2012/083365 CN2012083365W WO2013078927A1 WO 2013078927 A1 WO2013078927 A1 WO 2013078927A1 CN 2012083365 W CN2012083365 W CN 2012083365W WO 2013078927 A1 WO2013078927 A1 WO 2013078927A1
Authority
WO
WIPO (PCT)
Prior art keywords
muffler
cavity
casing
separator
exhaust pipe
Prior art date
Application number
PCT/CN2012/083365
Other languages
English (en)
Chinese (zh)
Inventor
孙新波
唐宏刚
唐力
章弘
Original Assignee
中国商用飞机有限责任公司
中国商用飞机有限责任公司上海飞机设计研究院
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 中国商用飞机有限责任公司, 中国商用飞机有限责任公司上海飞机设计研究院 filed Critical 中国商用飞机有限责任公司
Publication of WO2013078927A1 publication Critical patent/WO2013078927A1/fr

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
    • F01N1/04—Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers
    • 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow

Definitions

  • the invention relates to a silencer. Background technique
  • the existing muffler forms a resonator with the cavity through the perforated plate, so that the sound of the reading frequency can be reduced when the sound of some frequencies passes through the muffler.
  • FIG. 1 schematically discloses a conventional muffler 10 having an exhaust pipe 12 and a casing 14 surrounding the exhaust pipe 12. Since the exhaust pipe 12 is longer than the casing 14, the casing 14 is The two ends are respectively fixed on the outer surface of the exhaust pipe 12, and a cavity 16 is formed between the exhaust pipe 12 and the casing 14, and a plurality of partitions are arranged in the read cavity 16 to divide the cavity 16 into Compartment 18.
  • the exhaust pipe 12 is uniformly filled with holes, and each of the compartments 18 is a resonant cavity.
  • a portion of the airflow is stamped through the apertures in the exhaust pipe 12 into the respective compartments 18 and resonates, thereby attenuating or reducing the energy of the sound.
  • the lighter weight is better, so if the weight of the existing muffler can be reduced, the efficiency of the aircraft can be improved at least.
  • the present invention Based on the configuration of the conventional muffler, the following technical solutions are proposed.
  • the present invention discloses a muffler comprising: a housing having a cylindrical shape; an exhaust pipe having a sound attenuating portion and a connecting portion, the sound attenuating portion being in the housing and being in the housing a cavity is defined between the housing and the sound attenuating portion, and the sound attenuating portion has a plurality of through holes penetrating through the pipe wall, and the connecting portion is connected to the connecting portion of the corresponding sound source; a separator disposed in the cavity and dividing the cavity into at least two compartments; wherein the separator is porous.
  • the porous separator is reticulated.
  • the porous separator is formed of fibers.
  • the material of the fiber is a metal.
  • reinforcing ribs are fixed on the partition.
  • an outer periphery of the partition is fixed to the casing, and a gap for compensating for thermal expansion is provided between an inner periphery of the partition and the exhaust pipe.
  • the invention replaces the traditional metal separator with a metal mesh or a metal mesh.
  • a certain damping effect is generated in the interior of the metal fiber due to the viscous effect and the vibration of the metal fiber is excited, thereby improving the sound of the partition plate.
  • the resistance makes the acoustic performance of the muffler greatly improved at medium and high frequencies.
  • the invention adopts a separator having a certain resistance, thereby improving the acoustic resistance, thereby expanding the width of the resonance frequency, thereby optimizing the performance of the muffler.
  • the use of the muffler of the present invention can improve the noise of the AP U system at medium and high frequencies and can reduce the weight of the separator of the exhaust muffler by about 50%.
  • the invention improves the performance of the muffler by merely changing the material of the baffle without changing the configuration of the existing muffler, thereby reducing the noise of the exhaust system and reducing the weight of the baffle, while avoiding The problem of smoke clogging that is common in the use of such materials in mufflers.
  • Figure 1 schematically shows a prior art muffler structure
  • Figure 2 is a schematic illustration of a muffler structure of a preferred embodiment of the present invention
  • Figure 3 is a schematic illustration of a separator in a muffler structure of a preferred embodiment of the present invention
  • Figure 4 illustrates a sintered metal mesh applied to a separator in a muffler structure of a preferred embodiment of the present invention.
  • the muffler 20 includes a casing 21, an exhaust pipe 22, and a partition plate.
  • the housing 21 is substantially cylindrical, extends generally in a horizontal direction, and is disposed to surround the exhaust pipe 22; the exhaust pipe 22 is also substantially cylindrical, extending substantially horizontally through the interior of the housing 21,
  • the exhaust pipe 22 has a sound attenuating portion 24 for suppressing or absorbing noise or attenuating noise, and a connecting portion 25 for connecting the exhaust pipe 22 to a corresponding connection portion of the air source.
  • the sound attenuating portion 24 of the exhaust pipe 22 and the casing 21 collectively define a hollow annular cavity 26 therebetween.
  • the sound attenuating portion 24 further has a plurality of through holes penetrating the pipe wall to allow the inner space of the exhaust pipe 22 to communicate with the annular cavity 26 to form a sill-Holtz resonance cavity.
  • the partition 23 is disposed substantially in the vertical direction in the cavity 26 formed by the housing 21 and the sound attenuating portion 24, and divides the cavity 26 into at least two compartments 27.
  • the separator 23 is a porous separator.
  • the separator 23 may be a mesh separator, and the mesh separator may be formed of fibers.
  • the brazing material is made of a metal material, as shown in Fig. 4, which shows a metal mesh sintered from fibers of a metal material, and the metal mesh forms the above-mentioned separator 23.
  • the spacer 23 may be fixed with reinforcing ribs 28 which can not only enhance the strength of the entire spacer 23 but also Play a role in limiting displacement.
  • the outer periphery of the partition 23 is stamped and flanged and fixed to the housing 21 by riveting, the partition 23 Inner circumference A gap for compensating for thermal expansion is left between the exhaust pipes 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

La présente invention concerne un silencieux comprenant une coque (21), une conduite d'aération (22) et des déflecteurs (23). La coque (21) est de forme cylindrique; la conduite d'aération (22) est pourvue d'une partie atténuation sonore (24) et d'une partie raccordement (25). La partie atténuation sonore (24) est placée dans la coque (21); la partie atténuation sonore (24) et la coque (21) définissent conjointement une cavité (26) entre la coque (21) et la partie atténuation sonore (24); et la partie atténuation sonore (24) est pourvue d'une pluralité de trous traversants qui pénètrent à travers une paroi de conduite. La partie raccordement (25) sert à se raccorder sur la partie raccordement correspondante d'une source sonore. Les déflecteurs (23) sont poreux, sont agencés dans la cavité (26) et divisent la cavité (26) en au moins deux compartiments. Grâce au silencieux selon la présente invention, on diminue le bruit d'un système d'aération, on réduit le poids des déflecteurs et on évite l'obstruction par de la fumée lors de l'utilisation du silencieux.
PCT/CN2012/083365 2011-11-29 2012-10-23 Silencieux WO2013078927A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011103883633A CN102518499A (zh) 2011-11-29 2011-11-29 一种消音器
CN201110388363.3 2011-11-29

Publications (1)

Publication Number Publication Date
WO2013078927A1 true WO2013078927A1 (fr) 2013-06-06

Family

ID=46289536

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/083365 WO2013078927A1 (fr) 2011-11-29 2012-10-23 Silencieux

Country Status (2)

Country Link
CN (1) CN102518499A (fr)
WO (1) WO2013078927A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11859523B2 (en) 2022-01-06 2024-01-02 Honeywell International Inc. Muffler

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518499A (zh) * 2011-11-29 2012-06-27 中国商用飞机有限责任公司 一种消音器
JP6071664B2 (ja) * 2012-03-14 2017-02-01 三菱重工業株式会社 排気煙道
CN103256258A (zh) * 2013-05-10 2013-08-21 同济大学 一种用于燃料电池汽车空气辅助系统的消声器
FR3065473B1 (fr) * 2017-04-25 2019-04-19 Airbus Operations Panneau pour le traitement acoustique comprenant des alveoles contenant chacune une pluralite de conduits
CN109247877B (zh) 2017-07-14 2020-09-04 美的集团股份有限公司 吸尘器及其电机模组
CN107893778B (zh) * 2017-10-16 2020-02-11 中国商用飞机有限责任公司 一种风扇进气入口装置
CN109027502B (zh) * 2018-09-17 2019-08-02 北京航空航天大学 考虑截面声能量分布的管道降噪方法
CN110159600A (zh) * 2019-06-03 2019-08-23 宁波丰沃涡轮增压系统有限公司 一种集成有阻性消音器的增压器压壳结构
CN110454263B (zh) * 2019-07-25 2021-12-10 东风柳州汽车有限公司 汽车排气消声器
CN110847786B (zh) * 2019-11-23 2020-12-04 滨州富创科技服务有限公司 一种泡沫金属隔音装置
CN112652285A (zh) * 2020-08-25 2021-04-13 无锡市华尔泰机械制造有限公司 一种柔性连接消音器
CN113464331A (zh) * 2021-07-19 2021-10-01 上和汽车部件(宁波)有限公司 一种组合式消音器
CN114087096A (zh) * 2021-11-10 2022-02-25 湖南道依茨动力有限公司 一种降噪气道、发动机及作业机械
CN114852030B (zh) * 2022-04-26 2023-06-09 安徽江淮汽车集团股份有限公司 一种汽车气压制动干燥器用消音器

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JPH08319817A (ja) * 1995-05-29 1996-12-03 Fujitsubo Giken Kogyo Kk 自動車用消音器
US6467572B1 (en) * 2000-08-15 2002-10-22 Jefferson Liu Muffler
JP2007205275A (ja) * 2006-02-02 2007-08-16 Calsonic Kansei Corp 消音器
CN201106474Y (zh) * 2007-09-30 2008-08-27 敖忠坚 一种高排量消声器
CN101275477A (zh) * 2007-03-27 2008-10-01 张建平 一种农用柴油机消声排气装置
CN201258773Y (zh) * 2008-09-06 2009-06-17 孙波 重型汽车消音器
CN201666174U (zh) * 2010-03-24 2010-12-08 杭州吉大空分设备有限公司 一种psa低分贝消音器
CN102518499A (zh) * 2011-11-29 2012-06-27 中国商用飞机有限责任公司 一种消音器

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CN2081888U (zh) * 1991-01-29 1991-07-31 赵水石 一种新型汽车发动机消声器
CN1074975A (zh) * 1992-01-28 1993-08-04 鄂西自治州凤凰消声器厂 内燃机净化节能消声装置
CN101014524A (zh) * 2004-06-30 2007-08-08 奥蒂斯电梯公司 带有消散性通风通道的电梯轿厢轿顶
CN201202513Y (zh) * 2008-06-05 2009-03-04 重庆大学 容积可变的排气消声器
CN201367931Y (zh) * 2009-01-12 2009-12-23 昆明通晟汽车配件有限责任公司 阻抗复合型高效发动机消声器
CN201502422U (zh) * 2009-09-27 2010-06-09 柳州利和排气控制系统有限公司 汽车消声器
CN201865724U (zh) * 2010-11-30 2011-06-15 郑州三维内燃机净化消声技术有限公司 汽车排气消声装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08319817A (ja) * 1995-05-29 1996-12-03 Fujitsubo Giken Kogyo Kk 自動車用消音器
US6467572B1 (en) * 2000-08-15 2002-10-22 Jefferson Liu Muffler
JP2007205275A (ja) * 2006-02-02 2007-08-16 Calsonic Kansei Corp 消音器
CN101275477A (zh) * 2007-03-27 2008-10-01 张建平 一种农用柴油机消声排气装置
CN201106474Y (zh) * 2007-09-30 2008-08-27 敖忠坚 一种高排量消声器
CN201258773Y (zh) * 2008-09-06 2009-06-17 孙波 重型汽车消音器
CN201666174U (zh) * 2010-03-24 2010-12-08 杭州吉大空分设备有限公司 一种psa低分贝消音器
CN102518499A (zh) * 2011-11-29 2012-06-27 中国商用飞机有限责任公司 一种消音器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11859523B2 (en) 2022-01-06 2024-01-02 Honeywell International Inc. Muffler

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