CN203925669U - A kind of exhaust silencer for urban small automobile - Google Patents
A kind of exhaust silencer for urban small automobile Download PDFInfo
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- CN203925669U CN203925669U CN201420111599.1U CN201420111599U CN203925669U CN 203925669 U CN203925669 U CN 203925669U CN 201420111599 U CN201420111599 U CN 201420111599U CN 203925669 U CN203925669 U CN 203925669U
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- 230000003584 silencer Effects 0.000 title 1
- 238000005192 partition Methods 0.000 claims abstract description 28
- 239000011358 absorbing material Substances 0.000 claims description 6
- 239000011491 glass wool Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
一种用于城市小型汽车的排气消声器,主腔体内所设前隔板和后隔板将主腔体分为前腔、中腔和后腔;用于连接汽车尾气管的进气管穿过前腔直接插入到中腔,其进气口端连接有法兰盘,出气口端设有渐扩口,其位于前腔的部分的管壁上设有气孔;中间管的前后两端分别伸进前腔和后腔,且其伸到后腔内的一端端口封闭,其位于中腔内部分的管壁上设有气孔;排气管的一端伸进前腔内,另一端依次穿过后腔和后端盖,并与外部连通,其伸进前腔的一端设有渐收口,处于外部的管尾处设有直筒状的排气尾段,其位于后腔的部分的管壁上设有气孔所述前端盖和后端盖均为双层设置,内外两层之间存在间隙。本实用新型可有效降低排气噪声,设计合理,具有较好的应用前景。
An exhaust muffler for urban small cars, the main cavity is divided into a front cavity, a middle cavity and a rear cavity by a front partition and a rear partition; The front chamber is directly inserted into the middle chamber, the air inlet end is connected with a flange, and the air outlet end is provided with a gradually flared mouth, and the part of the pipe wall located in the front chamber is provided with air holes; the front and rear ends of the middle pipe respectively extend It enters the front cavity and the back cavity, and one end extending into the back cavity is closed, and there are air holes on the tube wall of the part located in the middle cavity; one end of the exhaust pipe extends into the front cavity, and the other end passes through the back cavity in turn And the rear end cover, and communicate with the outside, one end extending into the front cavity is provided with a gradual closing port, and the end of the external pipe is provided with a straight exhaust tail section, and the part of the pipe wall located in the rear cavity is provided with Both the front end cover and the rear end cover of the air hole are double-layered, and there is a gap between the inner and outer layers. The utility model can effectively reduce exhaust noise, has a reasonable design and has good application prospects.
Description
技术领域 technical field
本实用新型涉及一种汽车消声器,具体的说是一种用于城市小型汽车的排气消声器。 The utility model relates to an automobile muffler, in particular to an exhaust muffler for urban small automobiles.
背景技术 Background technique
环境噪声污染,是指所产生的环境噪声超过国家规定的环境噪声排放标准,并干扰他人正常生活、工作和学习的现象。随着工业化程度的提高,噪声危害范围日益扩大,交通噪声成为当前城市环境噪声中最主要的噪声源,排气噪声是汽车及其发动机的主要噪声源,而采用消声器是控制排气噪声普遍采用的最有效的降噪手段,城市小型汽车在城市占有率比较高。现有技术中,大多数排气消声器的消声性能依赖于采用一般扩张腔结构,声波从扩张腔壁直接辐射到外界,直接导致噪声大部分直接传播至外界,造成噪声污染。 Environmental noise pollution refers to the phenomenon that the generated environmental noise exceeds the environmental noise emission standards stipulated by the state and interferes with the normal life, work and study of others. With the improvement of industrialization, the scope of noise hazards is expanding day by day. Traffic noise has become the most important noise source in the current urban environmental noise. Exhaust noise is the main noise source of automobiles and their engines, and mufflers are widely used to control exhaust noise. The most effective means of noise reduction, urban small cars have a relatively high occupancy rate in cities. In the prior art, the muffler performance of most exhaust mufflers depends on the general expansion chamber structure, and the sound waves are directly radiated from the wall of the expansion chamber to the outside world, which directly causes most of the noise to be directly transmitted to the outside world, causing noise pollution.
因此,需要一种排气消声器,能够有效阻止城市小型SUV汽车噪声声波对外界的辐射,有效消除或减少排气噪声,减轻噪声的环境污染。 Therefore, there is a need for an exhaust muffler, which can effectively prevent the radiation of the noise sound waves of urban small SUV vehicles to the outside, effectively eliminate or reduce exhaust noise, and reduce environmental pollution caused by noise.
实用新型内容 Utility model content
本实用新型目的是为解决上述技术问题的不足,提供一种用于城市小型汽车的排气消声器,其具有等优点。 The purpose of this utility model is to provide a kind of exhaust muffler used for urban small cars in order to solve the deficiencies of the above-mentioned technical problems, which has the advantages such as.
本实用新型为解决上述技术问题所采用的技术方案是:一种用于城市小型汽车的排气消声器,包括主腔体、进气管、排气管和中间管,所述主腔体由腔壁、前端盖和后端盖围成;所述主腔体内所设前隔板和后隔板将主腔体分为前腔、中腔和后腔;用于连接汽车尾气管的进气管穿过前腔直接插入到中腔,其进气口端连接有法兰盘,出气口端设有渐扩口,其位于前腔的部分的管壁上至少有一个直径为6-8mm的气孔;中间管的前后两端分别伸进前腔和后腔 ,且其伸到后腔内的一端端口封闭,其位于中腔内部分的管壁上至少有一个直径为6-8mm的气孔;排气管的一端伸进前腔内,另一端依次穿过后腔和后端盖,并与外部连通,其伸进前腔的一端设有渐收口,处于外部的管尾处设有直筒状的排气尾段,其位于后腔的部分的管壁上至少有一个气孔,气孔直径为2-3mm;所述前隔板上设有至少有一个气孔;所述前端盖和后端盖均为双层设置,内外两层之间存在间隙。 The technical solution adopted by the utility model for solving the above-mentioned technical problems is: an exhaust muffler for urban small cars, including a main cavity, an air intake pipe, an exhaust pipe and an intermediate pipe, and the main cavity is composed of a cavity wall , the front end cover and the rear end cover; the front partition and the rear partition in the main cavity divide the main cavity into the front cavity, the middle cavity and the rear cavity; The front chamber is directly inserted into the middle chamber, the air inlet end is connected with a flange, and the air outlet end is provided with a gradually flared mouth, and there is at least one air hole with a diameter of 6-8mm on the pipe wall of the part located in the front chamber; the middle The front and rear ends of the tube extend into the front cavity and the rear cavity respectively, and one end of the tube extending into the rear cavity is closed, and there is at least one air hole with a diameter of 6-8mm on the tube wall of the part located in the middle cavity; the exhaust pipe One end of the pipe protrudes into the front chamber, and the other end passes through the rear chamber and the rear end cover in turn, and communicates with the outside. One end of the pipe protruding into the front chamber is provided with a gradual closing port, and a straight exhaust tail is provided at the end of the pipe outside. There is at least one air hole on the pipe wall of the part located in the back chamber, and the diameter of the air hole is 2-3mm; the front bulkhead is provided with at least one air hole; the front end cover and the rear end cover are both double-layered. , there is a gap between the inner and outer layers.
所述前隔板上的气孔的直径为6-12mm,气孔率为10-12%,前隔板内有吸声材料。 The diameter of the pores on the front partition is 6-12mm, the porosity is 10-12%, and there is sound-absorbing material in the front partition.
所述吸声材料为玻璃棉连续丝。 The sound-absorbing material is continuous glass wool.
所述前隔板和后隔板周围有直角翻边。 There are right-angle flanges around the front partition and the rear partition.
有益效果是: The beneficial effects are:
本实用新型的一种用于城市小型汽车的排气消声器,设计巧妙;其主体腔的腔壁、前端盖和后端盖采用双层结构,能够减少消声器通过壳体噪声辐射,降低噪声;前隔板设置吸声材料,能够进行中、高频吸声,进一步降低噪声;中间管跨过两个隔板,一段封闭,增加结构强度,进一步增加共振消声效果;设置两个固定隔板,两隔板将主腔体分隔为三个腔,使整个消声器内部结构稳定,并对排出的气体具有阻尼作用,起到进一步降低噪声的作用;进气管的出气口、排气管的进气口分别采用渐缩和渐扩形状,可以减少消声器内气流再生噪声的产生,进一步降低噪声;带有外层直筒状的的排气管尾管口可进一步降低整体消声器的出口噪声。本实用新型可有效降低排气噪声,设计合理,具有较好的应用前景。 The utility model is an exhaust muffler for urban small cars, which is ingeniously designed; the cavity wall of the main cavity, the front end cover and the rear end cover adopt a double-layer structure, which can reduce the noise radiation of the muffler through the shell and reduce the noise; the front The partition is equipped with sound-absorbing materials, which can absorb medium and high frequencies and further reduce noise; the middle pipe spans two partitions, and one section is closed to increase the structural strength and further increase the effect of resonance and noise reduction; set two fixed partitions, Two partitions divide the main chamber into three chambers, which stabilize the internal structure of the entire muffler, and have a damping effect on the exhausted gas, further reducing noise; the air outlet of the intake pipe and the air inlet of the exhaust pipe The tapered and tapered shapes are adopted respectively, which can reduce the airflow regeneration noise in the muffler and further reduce the noise; the exhaust pipe tailpipe with the outer straight cylinder can further reduce the outlet noise of the overall muffler. The utility model can effectively reduce exhaust noise, has a reasonable design and has good application prospects.
附图说明 Description of drawings
图1是本实用新型一种用于城市小型汽车的排气消声器的结构示意图; Fig. 1 is a kind of structural representation of the utility model exhaust muffler that is used for urban small car;
图2是图1所示排气消声器沿A-A线的剖面示意图; Fig. 2 is a schematic cross-sectional view of the exhaust muffler shown in Fig. 1 along line A-A;
图3是图1所示排气消声器的左视图; Fig. 3 is a left side view of the exhaust muffler shown in Fig. 1;
图4是图1所示排气消声器的右视图; Fig. 4 is a right side view of the exhaust muffler shown in Fig. 1;
图中标记是:1、主腔体,11、腔壁,12、前端盖,13、后端盖,14、前腔,15、中腔,16、后腔,2、进气管,21法兰盘,22、渐扩口3、排气管,31、渐收口,32、排气尾段, 4、中间管,5、前隔板,6、后隔板。 The marks in the figure are: 1. main cavity, 11. cavity wall, 12. front end cover, 13. rear end cover, 14. front cavity, 15. middle cavity, 16. rear cavity, 2. intake pipe, 21 flange Disc, 22, gradually flaring mouth 3, exhaust pipe, 31, gradually closing mouth, 32, exhaust tail section, 4, intermediate pipe, 5, front bulkhead, 6, rear bulkhead.
具体实施方式 Detailed ways
如图1-4所示,一种用于城市小型汽车的排气消声器,总长为550mm,一种用于城市小型汽车的排气消声器,包括主腔体1、进气管2、排气管3和中间管4,所述主腔体1由腔壁11、前端盖12和后端盖13围成,其特征在于:主腔体1内所设前隔板5和后隔板6将主腔体1分为前腔14、中腔15和后腔16;用于连接汽车尾气管的进气管2穿过前腔14直接插入到中腔15,其进气口端连接有法兰盘21,出气口端设有渐扩口22,其位于前腔14的部分的管壁上至少有一个直径为6-8mm的气孔;中间管4的前后两端分别伸进前腔14和后腔16 ,且其伸到后腔16内的一端端口封闭,其位于中腔15内部分的管壁上至少有一个直径为6-8mm的气孔;排气管3的一端伸进前腔14内,另一端依次穿过后腔16和后端盖13,并与外部连通,其伸进前腔14的一端设有渐收口31,处于外部的管尾处设有直筒状的排气尾段32,其位于后腔16的部分的管壁上至少有一个气孔,气孔直径为2-3mm;所述前隔板5上设有至少有一个气孔;所述前端盖12和后端盖13均为双层设置,内外两层之间存在间隙。 As shown in Figure 1-4, an exhaust muffler for urban small cars, with a total length of 550 mm, an exhaust muffler for urban small cars, including a main cavity 1, an intake pipe 2, and an exhaust pipe 3 And the intermediate pipe 4, the main cavity 1 is surrounded by the cavity wall 11, the front end cover 12 and the rear end cover 13, and it is characterized in that: the front partition 5 and the rear partition 6 set in the main cavity 1 divide the main cavity The body 1 is divided into a front chamber 14, a middle chamber 15 and a rear chamber 16; the air intake pipe 2 for connecting the automobile exhaust pipe passes through the front chamber 14 and is directly inserted into the middle chamber 15, and the air inlet end is connected with a flange 21, The air outlet end is provided with a gradually flared mouth 22, and at least one air hole with a diameter of 6-8mm is arranged on the tube wall of the part of the front chamber 14; And it stretches into one end port in the rear cavity 16 to be closed, and it is positioned at the tube wall of the inner part of the middle cavity 15 to have at least one air hole with a diameter of 6-8mm; It passes through the rear cavity 16 and the rear end cover 13 in turn, and communicates with the outside. One end of the front cavity 14 is provided with a gradual closing opening 31, and a straight exhaust tail section 32 is provided at the end of the external pipe, which is located at the rear There is at least one air hole on the pipe wall of the part of the cavity 16, and the diameter of the air hole is 2-3mm; the front partition 5 is provided with at least one air hole; the front end cover 12 and the rear end cover 13 are double-layered, There is a gap between the inner and outer layers.
所述前隔板5上的气孔的直径为6-12mm,气孔率为10-12%,前隔板5内有吸材料。 The diameter of the pores on the front partition 5 is 6-12mm, the porosity is 10-12%, and there is suction material in the front partition 5 .
所述吸声材料为玻璃棉连续丝。 The sound-absorbing material is continuous glass wool.
所述前隔板5和后隔板6周围有直角翻边。 There are right-angle flanges around the front partition 5 and the rear partition 6 .
本实用新型排气消声器的进气管2依次穿过前端盖12、前隔板5;排气管3依次穿过前隔板5、后隔板6和后端盖13;中间管4前端口位于前腔14空腔内,后端虽然位于中腔15中,但封闭,声音和气流只能通过中间管4上的大气孔进入前腔14中。进入进气管2中的噪声一方面进入主腔体1进行消声,部分噪声通过进气管2上气孔作用于前腔14对共振作用;由于中间管4一端封闭,中腔15中的噪声只能通过中间管4进入前腔14进行消声,还有部分噪声通过前隔板5上小气孔进行消声;最后前腔14中的噪声通过排气管3上小孔共振作用,还有后腔16内玻璃棉连续丝的中高频吸声作用;进气管2的出气口、排气管3的进气口和出气口分别采用渐缩、渐扩形状,有利于减少消声器内气流再生噪声的产生,进一步降低对外界的噪声。 The intake pipe 2 of the exhaust muffler of the utility model passes through the front end cover 12 and the front partition 5 in sequence; the exhaust pipe 3 passes through the front partition 5, the rear partition 6 and the rear end cover 13 in sequence; the front port of the middle pipe 4 is located at In the front chamber 14 cavities, although the rear end is located in the middle chamber 15, it is closed, and sound and air flow can only enter the front chamber 14 through the large hole on the middle pipe 4. On the one hand, the noise entering the intake pipe 2 enters the main cavity 1 for noise reduction, and part of the noise acts on the front chamber 14 through the air holes on the intake pipe 2 to resonate; because one end of the middle pipe 4 is closed, the noise in the middle cavity 15 can only Enter the front chamber 14 through the middle pipe 4 to eliminate noise, and some noise is eliminated through the small air holes on the front partition 5; finally, the noise in the front chamber 14 is resonated through the small holes on the exhaust pipe 3, and there is also a rear chamber. 16. The medium and high frequency sound absorption effect of the continuous glass wool inside the muffler; the air outlet of the air intake pipe 2, the air inlet and the air outlet of the exhaust pipe 3 respectively adopt tapered and gradually expanded shapes, which is beneficial to reduce the generation of air regeneration noise in the muffler , to further reduce the noise to the outside world.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103821591A (en) * | 2014-03-13 | 2014-05-28 | 洛阳理工学院 | Exhaust silencer for city compact car |
CN104403115A (en) * | 2014-11-27 | 2015-03-11 | 河南恒瑞源实业有限公司 | Noise-free steam explosion device for explosion of eucommia ulmoides bark |
-
2014
- 2014-03-13 CN CN201420111599.1U patent/CN203925669U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103821591A (en) * | 2014-03-13 | 2014-05-28 | 洛阳理工学院 | Exhaust silencer for city compact car |
CN104403115A (en) * | 2014-11-27 | 2015-03-11 | 河南恒瑞源实业有限公司 | Noise-free steam explosion device for explosion of eucommia ulmoides bark |
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