CN111140316B - Engine silencer - Google Patents
Engine silencer Download PDFInfo
- Publication number
- CN111140316B CN111140316B CN201911401692.XA CN201911401692A CN111140316B CN 111140316 B CN111140316 B CN 111140316B CN 201911401692 A CN201911401692 A CN 201911401692A CN 111140316 B CN111140316 B CN 111140316B
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- China
- Prior art keywords
- cavity
- sound
- absorbing
- partition plate
- air
- 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.)
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Classifications
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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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
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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
- F01N1/00—Silencing apparatus characterised by method of silencing
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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
- 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 the gases passing through porous members
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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
- 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
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
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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
- 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
- F01N1/12—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels
- F01N1/125—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels in combination with sound-absorbing materials
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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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/007—Apparatus used as intake or exhaust silencer
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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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0835—Hydrocarbons
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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)
Abstract
The invention discloses an engine silencer, which is characterized in that: the silencer comprises a silencer shell, a cover plate, filter cotton, a first partition plate, a second partition plate, an air guide pipe, corrugated sound-absorbing cotton, a sound-absorbing asbestos plate, sound-absorbing foam, a filter cavity, a sound-absorbing cavity, an accelerating cavity, an air inlet pipe and an air outlet pipe, wherein the two ends of the silencer shell are small, the middle of the silencer shell is cylindrical, the cover plate is arranged on a conical surface close to an air inlet end, the partition plate and the partition plate form the inner part of the silencer shell into the filter cavity, the sound-absorbing cavity and the accelerating cavity, and dense and breathable filter cotton is placed in the filter cavity; the muffler for the engine is used for simply filtering the inlet air of the tail gas of the engine, so that the quality of the discharged tail gas is improved; multiple noise reduction processing is carried out to tail gas, fully reduces the noise of tail gas, avoids the tail gas that enters the muffler amortization because of the unstable extrusion friction of air current production secondary noise when the outlet duct is given vent to anger.
Description
Technical Field
The invention belongs to the technical field of silencers, and particularly relates to an engine silencer.
Background
The engine is mingled with the noise in the tail gas that produces in the work, and these noises can produce huge discomfort to the human body usually, and install the muffler on the engine exhaust pipe, but noise that is mingled with in the greatly reduced engine during operation tail gas, the pollution that furthest's noise abatement produced, the protection health.
Unfiltered exhaust enters the silencer, and impurities and the like contained in the exhaust are adsorbed in the silencer, so that the silencing performance of the silencer device can be influenced.
When designing the silencer, the design of the silencer is difficult in consideration of acoustic performance, aerodynamic performance and airflow regeneration noise.
Disclosure of Invention
Aiming at the defects in the prior art, the technical problems to be solved by the invention are that the actual working condition of the existing silencer is not ideal and the silencing capability is not sufficient.
In order to solve the technical problems, the invention adopts the following technical scheme: an engine silencer comprises a silencer shell, a cover plate, filter cotton, a first clapboard, a second clapboard, an air duct, corrugated sound-absorbing cotton, a sound-absorbing asbestos plate, sound-absorbing foam, a filter cavity, a sound-absorbing cavity, an accelerating cavity, an air inlet pipe and an air outlet pipe,
the silencer shell is small in two ends and cylindrical in the middle, and the cover plate is arranged on the conical surface close to the air inlet end;
the partition plate and the partition plate form a filtering cavity, a sound absorbing cavity and an accelerating cavity in the shell of the silencer;
dense and breathable filter cotton is placed in the filter cavity;
the first partition plate is a conical partition plate, and a micro through hole is formed in the first partition plate;
the second partition plate is provided with an air duct which is respectively contacted with the sound absorbing cavity and the accelerating cavity;
the wall of the sound-absorbing cavity is attached with corrugated sound-absorbing cotton, the spiral track is formed by a sound-absorbing asbestos plate in the accelerating cavity, and sound-absorbing foam is attached to the track.
The air inlet pipe is arranged at one end of the silencer shell, which is close to the filter cavity, and the air outlet pipe is arranged at one end of the silencer shell, which is close to the accelerating cavity;
furthermore, the first partition board is a metal plate with the thickness of 1mm, miniature through holes are formed in the first partition board, and the diameters of the miniature through holes are smaller than 1 mm.
Furthermore, the filter cotton is special sponge that can adsorb residual oil gas and carbon impurity etc. in the tail gas, and high temperature resistant, and the apron is the metal sheet that fixes with the bolt and can open.
Furthermore, the number of the air guide tubes is 5, the two ends of the air guide tubes are closed, the side wall of the air guide tube is provided with a small micro hole, and the second partition plate is arranged in the middle of the air guide tubes.
Furthermore, amortization asbestos board presents the arc, constitutes the spiral by 8 amortization asbestos boards, fixes at the muffler casing and is close to the gas outlet end.
Furthermore, the aperture of the air outlet pipe is larger than that of the air inlet pipe.
The working process of the invention is as follows: the hot tail gas of engine noise that has gets into the filter chamber from the intake pipe, through the filter effect of filter pulp, with burning for abundant oil gas in the tail gas, and the impurity precipitation of carbon material adsorbs getting off, through the miniature aperture on the filterable gas baffle one, fall and fall the entering sound absorption chamber of making an uproar, the ripple type on the sound absorption chamber wall is inhaled the sound and is inhaled the gas that the sound was fallen after making an uproar and get into in the air duct through the miniature aperture on 5 air ducts, the miniature aperture that is close to the other end at the air duct gets into chamber with higher speed, the gas that the noise has was inhaled the sound and is fallen the noise in the spiral track of accelerating the intracavity, through the gaseous steady discharge with higher speed of the amortization of the carding of spiral track to the air current.
The invention has the beneficial effects that:
1. the air inlet of the tail gas of the engine is simply filtered, so that the quality of the discharged tail gas is improved;
2. multiple noise reduction processing is carried out to tail gas, fully reduces the noise of tail gas, avoids the tail gas that enters the muffler amortization because of the unstable extrusion friction of air current production secondary noise when the outlet duct is given vent to anger.
Drawings
FIG. 1 is a sectional view showing the overall construction of an engine muffler according to the present invention;
FIG. 2 is a cross-sectional view of an acceleration chamber of an engine muffler according to the present invention;
FIG. 3 is a cross-sectional view of a sound-absorbing chamber of an engine muffler according to the present invention.
In the figure: 1 silencer casing, 2 apron, 3 filtration cottons, 4 baffle one, 5 baffle two, 6 air ducts, 7 corrugated type sound absorption cottons, 8 amortization asbestos board, 9 inhale the sound foam, 10 filter chambers, 11 sound absorption chambers, 12 accelerate the chamber, 13 intake pipes, 14 outlet ducts.
Detailed Description
The details of the present invention are described below with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the engine silencer comprises a silencer shell 1, a cover plate 2, filter cotton 3, a first partition plate 4, a second partition plate 5, an air duct 6, corrugated sound-absorbing cotton 7, a sound-absorbing asbestos plate 8, sound-absorbing foam 9, a filter cavity 10, a sound-absorbing cavity 11, an accelerating cavity 12, an air inlet pipe 13 and an air outlet pipe 14,
the silencer shell 1 is small at two ends and cylindrical in the middle, and the cover plate 1 is arranged on the conical surface close to the air inlet end;
the first partition plate 4 and the second partition plate 5 divide the interior of the silencer shell 1 into a filter cavity 10, a sound absorption cavity 11 and an acceleration cavity 12;
dense and breathable filter cotton 3 is placed in the filter cavity 10;
the first partition plate 4 is a conical partition plate, and a micro through hole is formed in the upper surface of the first partition plate;
the second partition plate 5 is provided with an air duct 6, and the air duct 6 is respectively contacted with the sound absorption cavity 11 and the acceleration cavity 12;
the wall of the sound absorption cavity 11 is attached with corrugated sound absorption cotton 7, a spiral track is formed by a sound absorption asbestos plate 8 in the acceleration cavity 12, and sound absorption foam 9 is attached to the track;
the air inlet pipe 13 is arranged at one end of the silencer shell 1 close to the filter cavity 10, and the air outlet pipe 14 is arranged at one end of the silencer shell 1 close to the acceleration cavity 12;
in practical application, the first partition plate 4 is a metal plate with the thickness of 1mm, and micro through holes are formed in the first partition plate, and the diameters of the micro through holes are smaller than 1 mm.
In practical application, filter pulp 3 can adsorb the special sponge of remaining oil gas and carbon impurity etc. in the tail gas, and high temperature resistant, the metal sheet that apron 2 was fixed and can be opened with the bolt.
In practical application, the number of the air guide pipes 6 is 5, the two ends of the air guide pipes are closed, the side wall of the air guide pipe is provided with a small micro hole, and the second partition plate 5 is arranged in the middle of the air guide pipe 6.
In practical application, amortization asbestos board 8 presents the arc, constitutes the spiral by 8 amortization asbestos boards 8, fixes at muffler casing 1 and is close to the gas outlet end.
In practical application, the aperture of the outlet pipe 14 is larger than that of the inlet pipe 13.
The working process of the invention is as follows: hot tail gas that the engine has the noise gets into filter chamber 10 from intake pipe 12, through the filtering action of filter pulp 3, it is abundant oil gas with burning in the tail gas, and the impurity precipitation of carbon material adsorbs getting off, through the miniature aperture on a filterable gas baffle 4, fall and get into sound absorption chamber 11, the ripple type on the wall of sound absorption chamber 11 chamber is inhaled sound cotton 7 and is inhaled the sound and fall the gas after making an uproar and get into in air duct 6 through the miniature aperture on 5 air ducts 6, the miniature aperture that is close to the other end at air duct 6 gets into chamber 12 with higher speed, the gas that has the noise is inhaled the sound and is fallen the noise in the spiral track in chamber 12 with higher speed, through the smooth discharge of gas after the amortization of the carding of spiral track to the air current with higher speed.
In conclusion, the invention simply filters the inlet gas of the tail gas of the engine, and improves the quality of the discharged tail gas; multiple noise reduction processing is carried out to tail gas, fully reduces the noise of tail gas, avoids the tail gas that enters the muffler amortization because of the unstable extrusion friction of air current production secondary noise when the outlet duct is given vent to anger.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical spirit and features of the present invention, and the present invention is not limited thereto but may be implemented by those skilled in the art.
Claims (6)
1. An engine muffler characterized by: comprises a silencer shell (1), a cover plate (2), filter cotton (3), a first clapboard (4), a second clapboard (5), an air duct (6), corrugated sound-absorbing cotton (7), a sound-absorbing asbestos plate (8), sound-absorbing foam (9), a filter cavity (10), a sound-absorbing cavity (11), an accelerating cavity (12), an air inlet pipe (13) and an air outlet pipe (14),
the silencer shell (1) is small in two ends and cylindrical in the middle, and the cover plate (2) is arranged on the conical surface close to the air inlet end;
the first partition plate (4) and the second partition plate (5) divide the interior of the silencer shell (1) into a filtering cavity (10), a sound absorbing cavity (11) and an accelerating cavity (12);
dense and breathable filter cotton (3) is placed in the filter cavity (10);
the first partition plate (4) is a conical partition plate, and a micro through hole is formed in the upper surface of the first partition plate;
the second partition plate (5) is provided with an air duct (6), and the air duct (6) is respectively contacted with the sound absorption cavity (11) and the acceleration cavity (12);
a corrugated sound-absorbing sponge is attached to the wall of the sound-absorbing cavity (11), a spiral track is formed by a sound-absorbing asbestos plate (8) in the accelerating cavity (12), and sound-absorbing foam (9) is attached to the track;
the air inlet pipe (13) is arranged at one end, close to the filter cavity (10), of the silencer shell (1), and the air outlet pipe (14) is arranged at one end, close to the accelerating cavity (12), of the silencer shell (1).
2. The engine muffler of claim 1, wherein: the first partition plate (4) is a metal plate with the thickness of 1mm, miniature through holes are formed in the first partition plate, and the diameters of the miniature through holes are smaller than 1 mm.
3. The engine muffler of claim 1, wherein: the filter cotton (3) is special sponge capable of adsorbing residual oil gas and carbon impurities in tail gas and resistant to high temperature, and the cover plate (2) is a metal plate which is fixed by bolts and can be opened.
4. The engine muffler of claim 1, wherein: the number of the air ducts (6) is 5, the two ends of the air ducts are closed, the side wall of the air duct is provided with a small micro hole, and the second partition plate (5) is arranged in the middle of the air ducts (6).
5. The engine muffler of claim 1, wherein: amortization asbestos board (8) present the arc, constitute the spiral by 8 amortization asbestos boards (8), fix and be close to the gas outlet end in muffler casing (1).
6. The engine muffler of claim 3, wherein: the aperture of the air outlet pipe (14) is larger than that of the air inlet pipe (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401692.XA CN111140316B (en) | 2020-03-08 | 2020-03-08 | Engine silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401692.XA CN111140316B (en) | 2020-03-08 | 2020-03-08 | Engine silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111140316A CN111140316A (en) | 2020-05-12 |
| CN111140316B true CN111140316B (en) | 2021-08-27 |
Family
ID=70522158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911401692.XA Active CN111140316B (en) | 2020-03-08 | 2020-03-08 | Engine silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111140316B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2025410A6 (en) * | 1990-06-28 | 1992-03-16 | Gamez Anguiano Eugenio | Improvements in exhaust pipes of vehicles. |
| CN201574801U (en) * | 2009-10-30 | 2010-09-08 | 汪荣林 | Exhaust gas purifying and silencing apparatus for internal combustion engine motor vehicle |
| JP6084487B2 (en) * | 2013-03-11 | 2017-02-22 | 本田技研工業株式会社 | Muffler with catalytic converter |
| CN204755039U (en) * | 2015-06-03 | 2015-11-11 | 年杰 | Variable back pressure vortex exhaust apparatus of car |
| CN108223059A (en) * | 2017-12-19 | 2018-06-29 | 刘信玮 | A kind of automobile tail gas cleaning treatment device convenient for splitting |
| CN108223062A (en) * | 2017-12-19 | 2018-06-29 | 刘信玮 | A kind of side cover split-type automobile tail gas cleaning treatment device |
| CN109162790B (en) * | 2018-07-02 | 2021-08-20 | 上海诺骋工程机械排气系统有限公司 | Compact type tail gas post-treatment system |
| CN110195637A (en) * | 2019-05-14 | 2019-09-03 | 重庆鹏锦塑料有限公司 | A kind of automobile exhaust gas purifying installation |
-
2020
- 2020-03-08 CN CN201911401692.XA patent/CN111140316B/en active Active
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| Publication number | Publication date |
|---|---|
| CN111140316A (en) | 2020-05-12 |
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