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CN106285874B - 一种车辆用复合消声器 - Google Patents

一种车辆用复合消声器 Download PDF

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Publication number
CN106285874B
CN106285874B CN201610738074.4A CN201610738074A CN106285874B CN 106285874 B CN106285874 B CN 106285874B CN 201610738074 A CN201610738074 A CN 201610738074A CN 106285874 B CN106285874 B CN 106285874B
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muffler
noise reduction
metal mesh
muffler cylinder
partition
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CN106285874A (zh
Inventor
吴鹏
尹玲
张斐
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Dongguan University of Technology
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Dongguan University of Technology
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    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/007—Apparatus used as intake or exhaust 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling by passing the exhaust gases through porous members
    • 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
    • F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
    • 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
    • F01N2210/00—Combination of methods of silencing
    • F01N2210/04—Throttling-expansion and resonance

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

Abstract

本发明提供一种车辆用复合消声器，具有壳体，带通孔的隔板及共振消声结构。通过隔板与共振消声结构的设置，将阻性消声与共振消声结合在一起，能有效降低车用发动机的排气噪音。消声器筒体内设置有波纹金属网，共振消声结构设置在金属网的波峰上，金属网上涂覆有催化剂。波纹金属网的设置，能够使共振消声结构与消声器壳体之间解耦，避免车辆本身振动对共振消声结构的影响，大大提高了共振消声结构对尾气噪音的共振反应，同时，金属网上涂覆有催化剂，有利于进一步降低排放气体中的有害物质。

Description

一种车辆用复合消声器
技术领域
本发明涉及一种车辆用复合消声器。
背景技术
消声器是机动车发动机降噪的常用手段，而其中常用的是抗性消声器，且通常采用多腔级联来增强消音效果，这种结构对于气流流向的改变较小，消声效果存在改进的空间。
发明内容
本发明所要提供了一种车辆用复合消声器，具有壳体，带通孔的隔板及共振消声结构。隔板位于消声器筒体中部，将消声器筒体横向分成第一腔室和第二腔室，改进了以往抗性腔的轴向级联的结构形式，采用了上下腔的级联形式上下腔的级联方式相对于轴向级联而言，侧壁与管道的面积比得到提高，面积比是抗性消音器中重要的消音效率提升参数，充分的提高了腔体结构来改进消音器的腔体的消音利用率，改善了降噪效果，同时，本发明的消声器筒体的周向上设置有共振消声结构，共振消声结构具有与噪音间形成共振、消耗接近共振消声结构的最低共振频率的外界声波的吸音能力，因而，通过两种消声方式的结合，本发明能够有效降低发动机噪音。
本发明解决上述问题所采用的技术方案是：
一种车辆用复合消声器，包括消声器筒体、进气口、排气管口，所述消声器筒体整体密封，所述消声器筒体的两个端面分别为进气端面、排气端面，所述进气端面、排气端面与消声器筒体的轴向存在一个倾斜角，倾斜方向倒向排气端面，还包括带穿孔的隔板，所述隔板位于消声器筒体中部，将消声器筒体横向分成第一腔室和第二腔室，进气口处于第一腔室，排气管口处于第二腔室，隔板上的带穿孔为长方形并形成相对于隔板水平面的倾角，在消声器筒体的周向上设置有共振消声结构。
所述共振消声结构为设置在消声器筒体周向上向心布置的柱状管体。
所述消声器筒体内设置有波纹金属网，所述柱状管体设置在金属网的波峰上。
柱状管体为直径、长度不同的管体。
所述金属网上涂覆有催化剂。
本发明能够较大提高消声器的降噪效果，且波纹金属网能有效避免发动机体本身的振动传导至消声器。金属网上涂覆催化剂可以进行废弃处理，减少有害气体排放。
附图说明
图1为复合消声器主视图。
图2为复合消声器左视图。
图3为隔板主视图。
图4为增加波纹金属网的复合消声器主视图。
图5为增加波纹金属网的复合消声器左视图。
具体实施方式
下面结合实施例及附图，对本发明作进一步地的详细说明，但本发明的实施方式不限于此。
如图1、图2所示，消声器筒体1、进气口2、排气管口3，所述消声器筒体1整体密封，所述消声器筒体1的两个端面分别为进气端面12、排气端面13，所述进气端面12、排气端面13与消声器筒体1的轴向存在一个倾斜角，倾斜方向倒向排气端面13，还包括带穿孔51的隔板5，如图3所示，所述隔板5位于消声器筒体1中部，将消声器筒体1横向分成第一腔室14和第二腔室15，进气口2处于第一腔室14，排气管口3处于第二腔室15，隔板5上的带穿孔51为长方形并形成相对于隔板5水平面的倾角，在消声器筒体1的周向上设置有共振消声结构。
共振消声结构为设置在消声器筒体1周向上向心布置的柱状管体4。柱状管体4可以是直径、长度相同的均匀管体，也可以是直径、长度不同的管体。
如图4、图5所示，消声器筒体1内设置有波纹金属网6，柱状管体4设置在金属网的波峰上，金属网上涂覆有催化剂。 波纹金属网6的设置，能够使柱状管体4与消声器壳体之间解耦，避免车辆本身振动对柱状管体4的影响，大大提高了柱状管体4对尾气噪音的共振反应和消除噪音，同时，金属网上涂覆有催化剂，有利于进一步降低排放气体中的有害物质。
隔板5为中空结构，中间填充有消声材料，消声材料为聚氨酯海绵。此消音材料阻燃、耐高温，在有效提升吸音效果的同时，安全性能好。
通过阻性消声和共振消声的结合，本发明能有效降低发动机运行噪音。

Claims (1)

1.一种车辆用复合消声器，包括消声器筒体（1）、进气口（2）、排气管口（3），所述消声器筒体整体密封，所述消声器筒体的两个端面分别为进气端面（12）、排气端面（13），所述进气端面（12）、排气端面（13）与消声器筒体（1）的轴向存在一个倾斜角，倾斜方向倒向排气端面（13），还包括带穿孔（51）的隔板（5），所述隔板（5）位于消声器筒体（1）中部，将消声器筒体（1）横向分成第一腔室（14）和第二腔室（15），进气口（2）处于第一腔室（14），排气管口（3）处于第二腔室（15），隔板上的带穿孔（51）为长方形并形成相对于隔板水平面的倾角，其特征在于：在消声器筒体（1）的周向上设置有共振消声结构，所述共振消声结构为设置在消声器筒体（1）周向上向心布置的柱状管体（4），所述柱状管体（4）为直径、长度不同的管体，所述消声器筒体（1）内设置有波纹金属网（6），所述共振消声结构设置在波纹金属网（6）的波峰上，所述波纹金属网（6）上涂覆有催化剂。
CN201610738074.4A 2016-08-26 2016-08-26 一种车辆用复合消声器 Expired - Fee Related CN106285874B (zh)

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CN106678084A (zh) * 2017-01-10 2017-05-17 吴光明 一种通风消音装置
CN110318847A (zh) * 2019-07-29 2019-10-11 杭州隆运汽车部件有限责任公司 一种汽车发动机排气系统消声器
CN110626364B (zh) * 2019-09-24 2021-10-22 中车株洲电力机车有限公司 一种轨道车辆冷却系统隔声结构及其制作方法
CN115711440B (zh) * 2022-08-17 2025-09-26 厦门呼博仕智能健康科技股份有限公司 一种新风柜机用的风箱降噪装置及其使用方法

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CN204878084U (zh) * 2015-07-08 2015-12-16 河南城建学院 一种矿用井下对旋轴流压入式通风机消声器

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CN103982273A (zh) * 2014-05-28 2014-08-13 成都陵川特种工业有限责任公司 侧开通槽消音器
CN204878084U (zh) * 2015-07-08 2015-12-16 河南城建学院 一种矿用井下对旋轴流压入式通风机消声器

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