CN107489490A - Exhaust silencer - Google Patents

Exhaust silencer Download PDF

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Publication number
CN107489490A
CN107489490A CN201710880685.7A CN201710880685A CN107489490A CN 107489490 A CN107489490 A CN 107489490A CN 201710880685 A CN201710880685 A CN 201710880685A CN 107489490 A CN107489490 A CN 107489490A
Authority
CN
China
Prior art keywords
air inlet
inlet pipe
cylindrical
escape pipe
pipe
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.)
Pending
Application number
CN201710880685.7A
Other languages
Chinese (zh)
Inventor
何平
黄世国
李艳光
黄波
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.)
Chery Automobile Co Ltd
Original Assignee
Chery Automobile Co Ltd
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 Chery Automobile Co Ltd filed Critical Chery Automobile Co Ltd
Priority to CN201710880685.7A priority Critical patent/CN107489490A/en
Publication of CN107489490A publication Critical patent/CN107489490A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/02Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/04Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/08Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/082Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/08Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/10Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials

Abstract

The invention discloses a kind of exhaust silencer, including cylindrical body, the both ends of cylindrical body are plugged with air inlet pipe respectively, escape pipe, described air inlet pipe, the outer peripheral face of escape pipe is provided with the dividing plate of ring-type, the periphery of dividing plate is bonded with the inwall of cylindrical body, it is single layer structure that dividing plate forms absorption chamber and absorption chamber perisporium to the region between the end face of the cylindrical body closed on, air inlet pipe, the pipeline section that escape pipe is in absorption chamber all offers passage, the inwall and air inlet pipe of absorption chamber, silencing cotton is provided between escape pipe, it is double-decker that region between two described dividing plates, which forms reative cell and reative cell perisporium,.Reacted between double-decker with gap with certain expansion space for radiated noise, this process completes the elimination of middle low frequency noise, then again by the absorption chamber residing for escape pipe, enter Row noise elimination again, said structure combines individual layer and double-decker, reduces the use of material in elimination while low-and high-frequency noise.

Description

Exhaust silencer
Technical field
The invention belongs to automobile exhaust field, more particularly to a kind of exhaust silencer.
Background technology
With the rising of car ownership, the displacement noise of vehicle fuel waste gas turns into noise source common in life. In order to reduce waste gas displacement noise, exhaust silencer is commonly used and arranges denoising device as car tail, mainly using more Hole sound absorbing material and sound wave interfere and the principle for decrease of cancelling out each other when being superimposed, so as to reach the effect of noise reduction.Existing skill In art, the silencer used on automobile is mostly double-deck or single layer structure dissipative muffler;But the silencer surface spoke of individual layer It is bigger to penetrate noise, sound wave readily penetrates through within the interior or exterior of the vehicle, influences human feeling, and if individual layer silencer cylinder Material thickness is partially thin, it is easy to causes resonance, so as to produce other noises;In order to avoid such case, some silencers are adopted With double-layer barrel structure, the weight of gas extraction system can be caused to increase, cost increase.So smaller and can of acoustic wave filter structure weight With good soundproof effect, become the target that major automobile main frame maker is pursued.
The content of the invention
It is an object of the invention to provide a kind of exhaust silencer, its cylinder is that individual layer is combined with double-decker, mitigates knot Ensure good soundproof effect while structure weight.
To achieve these goals, the present invention takes following technical scheme:A kind of exhaust silencer, including cylindrical body, The both ends of cylindrical body are plugged with air inlet pipe, escape pipe respectively, described air inlet pipe, the outer peripheral face of escape pipe be provided with ring-type every Plate, the periphery of dividing plate are bonded with the inwall of cylindrical body, and dividing plate is formed to the region between the end face of the cylindrical body closed on to be inhaled It is single layer structure to receive room and absorption chamber perisporium, and the pipeline section that air inlet pipe, escape pipe are in absorption chamber all offers passage, is absorbed It is provided with silencing cotton between the inwall and air inlet pipe, escape pipe of room, the region between two described dividing plates forms reative cell and reaction Room perisporium is double-decker.
In above-mentioned technical proposal, waste gas enters absorption chamber from air inlet pipe first, enters silencing cotton, part sound by passage It can be rubbed in the space of silencing cotton and change into thermal energy consumption and dissipate, so as to complete the elimination of high frequency noise, radiation caused by it is made an uproar Sound is smaller, so single layer structure can completely cuts off radiated noise;Subsequent waste gas enters reative cell, at this moment the flow area face of gas Product changes, and forms structure of resonant cavity, and sound wave is mutually reflected in reative cell, interferes and weaken, while in this process Also larger radiated noise can be produced, in order to avoid the perisporium of reative cell is set to double-decker by such case, improves structure Mode, while reacted between double-decker with gap with certain expansion space for radiated noise, this process completes The elimination of middle low frequency noise, then enter Row noise elimination again by the absorption chamber residing for escape pipe again, said structure combines Individual layer and double-decker, reduce the use of material in elimination while low-and high-frequency noise.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Embodiment
The present invention is made further instructions with reference to accompanying drawing 1:
A kind of exhaust silencer, including cylindrical body 10, the both ends of cylindrical body 10 are plugged with air inlet pipe 20, outlet respectively Pipe 30, described air inlet pipe 20, the outer peripheral face of escape pipe 30 are provided with the dividing plate 40 of ring-type, periphery and the cylindrical body 10 of dividing plate 40 Inwall fitting, dividing plate 40 between the end face of the cylindrical body 10 closed on region composition absorption chamber 1 and the perisporium of absorption chamber 1 be Single layer structure, the pipeline section that air inlet pipe 20, escape pipe 30 are in absorption chamber 1 all offer passage 50, the inwall of absorption chamber 1 with It is provided with silencing cotton 60 between air inlet pipe 20, escape pipe 30, the region between two described dividing plates 40 forms reative cell 2 and reative cell 2 perisporiums are double-decker.Waste gas enters absorption chamber 1 from air inlet pipe 20 first, enters silencing cotton 60, part sound by passage 50 It can be rubbed in the space of silencing cotton 60 and change into thermal energy consumption and dissipate, radiated so as to complete the elimination of high frequency noise, caused by it Noise is smaller, so single layer structure can completely cuts off radiated noise;Subsequent waste gas enters reative cell 2, and the at this moment circulation of gas is cut Face area changes, and forms structure of resonant cavity, and sound wave is mutually reflected in reative cell 2, interfered and weakens, while at this Process can also produce larger radiated noise, in order to avoid the perisporium of reative cell 2 is set to double-decker by such case, improve Structural modal, while reacted between double-decker with gap with certain expansion space for radiated noise, this process is complete Into the elimination of middle low frequency noise, then enter Row noise elimination, above-mentioned knot again by the absorption chamber 1 residing for escape pipe 30 again Structure combines individual layer and double-decker, reduces the use of material in elimination while low-and high-frequency noise.
Described cylindrical body 10 includes the inner barrel 11 and outer cylinder body 12 of single layer structure, the stage casing of described inner barrel 11 Position forms double-decker, the relative position that described outer cylinder body 12 is between two dividing plates 40 to outer cylinder body 12 is coated with. Certain gap between inner barrel 11 and outer cylinder body 12 be present, then carry out occlusion welding again and be made into an entirety, absorb The perisporium of room 1 is single layer structure, and the perisporium of reative cell 2 is double-decker.
The gas outlet of described air inlet pipe 20 all extends with the air inlet of escape pipe 30 to the inside of reative cell 2, and air inlet The gas outlet of pipe 20 arranged for interval corresponding with the air inlet of escape pipe 30.Waste gas enters gas flow area face when in reative cell 2 Product changes, and sound wave mutually suppresses interference in reative cell 2.
Further, the length of pipe section that described air inlet pipe 20, escape pipe 30 are located in reative cell 2 is the spacing of two dividing plate 40 A quarter between half.Corresponding adjustment air inlet pipe 20, the spacing of escape pipe 30, can effectively strengthen sound wave anti- That answers room 2 interferes effect, so as to effectively eliminate noise.
Described silencing cotton 60 is glass fibre, and the aperture of described passage 50 is 3~5mm and percent opening is 20% left The right side, while passage 50 is also offered on dividing plate 40.Also passage 50 is offered on dividing plate 40, sound wave occurs in reative cell 2 Circulated while suppressing interference also through dividing plate 40 into absorption chamber 1, it is ensured that all eliminate the noise waves of senior middle school's low frequency.
Described dividing plate 40 is connected using expansion fashion with air inlet pipe 20, escape pipe 30, then planted in cylindrical body 10. Dividing plate 40 is sheathed on air inlet pipe 20, the outer peripheral face of escape pipe 30, is fixed using expansion fashion, then plants into cylindrical body In 10 chamber, the periphery of dividing plate 40 and the inwall of inner barrel 11 are brought into close contact.
The both ends of described cylindrical body 10 are provided with end cap 70, and end cap 70 offers to be passed through for air inlet pipe 20, escape pipe 30 Through hole.After air inlet pipe 20, escape pipe 30 plant inner barrel 11, silencing cotton 60 is filled in, end cap 70 is sheathed on air inlet pipe 20, gone out The periphery of tracheae 30, then end cap 70 and inner barrel 11, air inlet pipe 20, escape pipe 30 are welded, sealed.

Claims (7)

1. a kind of exhaust silencer, including cylindrical body (10), the both ends of cylindrical body (10) be plugged with respectively air inlet pipe (20), Escape pipe (30), it is characterised in that:The described dividing plate (40) of air inlet pipe (20), the outer peripheral face of escape pipe (30) provided with ring-type, The periphery of dividing plate (40) is bonded with the inwall of cylindrical body (10), and dividing plate (40) is between the end face of the cylindrical body (10) closed on Region form absorption chamber (1) and absorption chamber (1) perisporium be single layer structure, air inlet pipe (20), escape pipe (30) are in absorption chamber (1) pipeline section in all offers passage (50), and inwall and air inlet pipe (20), the escape pipe of absorption chamber (1) are provided between (30) Silencing cotton (60), it is double-decker that the region between described two dividing plates (40), which forms reative cell (2) and reative cell (2) perisporium,.
2. exhaust silencer according to claim 1, it is characterised in that:Described cylindrical body (10) includes single layer structure Inner barrel (11) and outer cylinder body (12), the middle section position of described inner barrel (11) to be coated with outer cylinder body (12) formed it is double Rotating fields, the relative position that described outer cylinder body (12) is between two dividing plates (40).
3. exhaust silencer according to claim 1, it is characterised in that:The gas outlet of described air inlet pipe (20) and outlet The air inlet for managing (30) all extends to the inside of reative cell (2), and the gas outlet of air inlet pipe (20) and the air inlet of escape pipe (30) The corresponding arranged for interval of mouth.
4. exhaust silencer according to claim 3, it is characterised in that:Described air inlet pipe (20), escape pipe (30) position In a quarter that the length of pipe section in reative cell (2) is two dividing plates (40) spacing between half.
5. exhaust silencer according to claim 1, it is characterised in that:Described silencing cotton (60) is glass fibre, institute The aperture for the passage (50) stated is 3~5mm and percent opening is 20% or so, while also offers passage on dividing plate (40) (50)。
6. exhaust silencer according to claim 1, it is characterised in that:Described dividing plate (40) and air inlet pipe (20), go out Tracheae (30) is connected using expansion fashion, then is planted into cylindrical body (10).
7. exhaust silencer according to claim 1, it is characterised in that:The both ends of described cylindrical body (10) are provided with end Cover (70), end cap (70) offers the through hole passed through for air inlet pipe (20), escape pipe (30).
CN201710880685.7A 2017-09-26 2017-09-26 Exhaust silencer Pending CN107489490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710880685.7A CN107489490A (en) 2017-09-26 2017-09-26 Exhaust silencer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710880685.7A CN107489490A (en) 2017-09-26 2017-09-26 Exhaust silencer

Publications (1)

Publication Number Publication Date
CN107489490A true CN107489490A (en) 2017-12-19

Family

ID=60652202

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710880685.7A Pending CN107489490A (en) 2017-09-26 2017-09-26 Exhaust silencer

Country Status (1)

Country Link
CN (1) CN107489490A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267899A (en) * 1979-08-31 1981-05-19 Donaldson Company, Inc. Muffler assembly
US4779703A (en) * 1987-04-06 1988-10-25 Honda Giken Kogyo Kabushiki Kaisha Silencing device for internal combustion engine
US5365025A (en) * 1992-01-24 1994-11-15 Tennessee Gas Pipeline Company Low backpressure straight-through reactive and dissipative muffler
JPH11236860A (en) * 1998-02-23 1999-08-31 Calsonic Corp Intake silencer for vehicle mounting engine with turbo
JP2000087724A (en) * 1998-09-08 2000-03-28 Yamaha Motor Co Ltd Muffler structure for motorbike
CN203570393U (en) * 2013-12-02 2014-04-30 天津市神驰汽车零部件有限公司 Exhaust pipe with straight tube type silencing device
CN204827604U (en) * 2015-06-16 2015-12-02 华晨汽车集团控股有限公司 Multicavity resonant silencer
CN105464755A (en) * 2014-08-19 2016-04-06 天津华瑞达汽车消声器有限公司 Automobile muffler
CN206397562U (en) * 2017-01-06 2017-08-11 重庆长安汽车股份有限公司 A kind of secondary silencer of automobile exhaust system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267899A (en) * 1979-08-31 1981-05-19 Donaldson Company, Inc. Muffler assembly
US4779703A (en) * 1987-04-06 1988-10-25 Honda Giken Kogyo Kabushiki Kaisha Silencing device for internal combustion engine
US5365025A (en) * 1992-01-24 1994-11-15 Tennessee Gas Pipeline Company Low backpressure straight-through reactive and dissipative muffler
JPH11236860A (en) * 1998-02-23 1999-08-31 Calsonic Corp Intake silencer for vehicle mounting engine with turbo
JP2000087724A (en) * 1998-09-08 2000-03-28 Yamaha Motor Co Ltd Muffler structure for motorbike
CN203570393U (en) * 2013-12-02 2014-04-30 天津市神驰汽车零部件有限公司 Exhaust pipe with straight tube type silencing device
CN105464755A (en) * 2014-08-19 2016-04-06 天津华瑞达汽车消声器有限公司 Automobile muffler
CN204827604U (en) * 2015-06-16 2015-12-02 华晨汽车集团控股有限公司 Multicavity resonant silencer
CN206397562U (en) * 2017-01-06 2017-08-11 重庆长安汽车股份有限公司 A kind of secondary silencer of automobile exhaust system

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