CN108825331A - Muffler - Google Patents
Muffler Download PDFInfo
- Publication number
- CN108825331A CN108825331A CN201811095308.3A CN201811095308A CN108825331A CN 108825331 A CN108825331 A CN 108825331A CN 201811095308 A CN201811095308 A CN 201811095308A CN 108825331 A CN108825331 A CN 108825331A
- Authority
- CN
- China
- Prior art keywords
- baffle
- cavity
- drainage
- muffler
- annular gap
- 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.)
- Granted
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
- F01N1/08—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
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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
A kind of muffler, it includes shell, the air inlet pipe being at least partially inserted into the shell and escape pipe, wherein the shell includes first end cover, second end cover and main cavity, and the air inlet pipe and the escape pipe are each passed through the first end cover and the second end cover enters in main chamber body.To form lap in escape pipe described in the air inlet pipe partial insertion, the lap is equipped with the annular gap between the air inlet pipe and the escape pipe.The muffler further includes the baffle component in the annular gap the annular gap to be divided into the acoustic transmission path of revolution.So set, increasing propagation distance of the sound between air inlet pipe and an air outlet pipe in the case where additionally not increasing volume, reducing the low frequency noise of exhaust system.
Description
Technical field
The present invention relates to a kind of mufflers, belong to engine exhaust system technical field.
Background technique
The noise of exhaust system has a major impact vehicle NVH performance, and exhaust low-frequency noise problem usually requires large volume
Muffler solve.If silencer position is constrained by various aspects, common tuning chamber is difficult to have arrangement space.It please join Fig. 1
Shown, existing muffler can generally design concentric tube configuration tuning chamber to reduce particular low frequency noise, air inlet pipe 1 ' and outlet
The overlap length L of pipe 2 ' determines specific noise reduction frequency, and L is longer, and noise reduction frequency is lower.The knot of muffler in many cases,
Structure and position limit the length of L, therefore are difficult to meet the requirements.
Summary of the invention
The purpose of the present invention is to provide one kind to reduce exhaust system low frequency in the case where additionally not increasing volume
The muffler of noise.
To achieve the above object, the present invention adopts the following technical scheme that：A kind of muffler comprising shell, at least partly
The air inlet pipe being inserted into the shell and the escape pipe being at least partially inserted into the shell, wherein the shell includes first
End cap, the second end cover opposite with the first end cover and the main chamber between the first end cover and the second end cover
Body, the air inlet pipe and the escape pipe are each passed through the first end cover and the second end cover enters main chamber body
In, to form lap in escape pipe described in the air inlet pipe partial insertion, the lap, which is equipped with, is located at the air inlet
Manage the escape pipe between annular gap, the muffler further include be located at the annular gap in will it is described annular between
Gap is divided into the baffle component of the acoustic transmission path of revolution.
Technical solution as a further improvement of that present invention is equipped between first between the air inlet pipe and the second end cover
Away from equipped with the second spacing between the escape pipe and the first end cover.
Technical solution as a further improvement of that present invention, the baffle component include positioned at one end of the lap
First baffle, positioned at the lap the other end second baffle and be located at the first baffle and the second gear
Drainage baffle between plate.
Technical solution as a further improvement of that present invention, the first baffle is C-shaped and is located in the annular gap
With a part of annular gap described in partial occlusion；The annular gap further includes that first not blocked by the first baffle opens
Oral area.
Technical solution as a further improvement of that present invention, the second baffle is C-shaped and is located in the annular gap
With a part of annular gap described in partial occlusion；The annular gap further includes that second not blocked by the second baffle opens
Oral area.
Technical solution as a further improvement of that present invention, the drainage baffle include from the second baffle to described
First drainage baffle of one baffle extension, the second drainage baffle extended from the first baffle to the second baffle and company
The third drainage baffle between the first baffle and the second baffle is connect, wherein the annular gap is divided into and is located at
The first cavity between the first drainage baffle and third drainage baffle is located at the first drainage baffle and described the
The second cavity between two drainage baffles and the third between the second drainage baffle and third drainage baffle
First cavity and the outlet of the air inlet pipe are got up in cavity, second opening portion, first cavity and institute
State the connection of the second cavity, second cavity is connected to the third cavity, first opening portion by the third cavity and
The connection of main chamber body is got up.
Technical solution as a further improvement of that present invention, the second baffle are equipped with the first end positioned at C-shaped end
Portion and second end portion, it is described first drainage baffle extends from the first end portion, it is described first drain baffle with it is described
The first notch for being connected to first cavity and second cavity is equipped between first baffle.
Technical solution as a further improvement of that present invention, the first baffle are equipped with positioned at the third end of C-shaped end
Portion and the 4th terminal part, wherein the third terminal part is axially aligned with the second end portion, the second drainage baffle
From the 4th terminal part extend, it is described second drainage baffle and the second baffle between be equipped be connected to second cavity and
Second notch of the third cavity.
Technical solution as a further improvement of that present invention, the third drainage baffle connect the second end portion and institute
State third terminal part.
Technical solution as a further improvement of that present invention, the air inlet pipe and the escape pipe are coaxially disposed.
Compared to the prior art, the acoustic transmission path that the present invention is turned round by setting, in the feelings for not increasing volume additionally
Under condition, propagation distance of the sound between air inlet pipe and an air outlet pipe is increased, the low frequency noise of exhaust system is reduced.
Detailed description of the invention
Fig. 1 is the perspective view of existing muffler.
Fig. 2 is the perspective view of muffler of the present invention.
Fig. 3 is the perspective view removed in Fig. 2 after shell.
Fig. 4 is the stereoscopic schematic diagram of baffle component in Fig. 3.
Stereoscopic schematic diagram when Fig. 5 is baffle component and air inlet pipe mutual cooperation in Fig. 4, and it is labelled with sound transmission road
Diameter.
Specific embodiment
It please join shown in Fig. 2 to Fig. 5, present invention discloses a kind of mufflers 100 comprising shell 1 is at least partially inserted into institute
The escape pipe 3 and baffle component 4 stating the air inlet pipe 2 in shell 1, being at least partially inserted into the shell 1.
The shell 1 includes first end cover 11, the second end cover 12 opposite with the first end cover 11 and is located at described
Main cavity 13 between first end cover 11 and the second end cover 12.
The air inlet pipe 2 is each passed through the first end cover 11 with the escape pipe 3 and enters with the second end cover 12
In main chamber body 13.The air inlet pipe 2 is coaxially disposed with the escape pipe 3.The air inlet pipe 2 and the second end cover 12 it
Between be equipped with the first spacing G1, between the escape pipe 3 and the first end cover 11 be equipped with the second spacing G2.The air inlet pipe 2
Divide in the insertion escape pipe 3 to form lap 5.The lap 5, which is equipped with, is located at the air inlet pipe 2 and the outlet
Annular gap 6 between pipe 3.
The baffle component 4 is located at the sound transmission road that the annular gap 6 is divided into revolution in the annular gap 6
Diameter.So set, not additionally increase volume in the case where, increase propagation of the sound between air inlet pipe 2 and escape pipe 3 away from
From, therefore frequency adjusted can reduce very much, greatly reduce the low frequency noise of exhaust system.
It please join shown in Fig. 4 and Fig. 5, the baffle component 4 includes the first baffle positioned at one end of the lap 5
41, positioned at the second baffle 42 of the other end of the lap 5 and positioned at the first baffle 41 and the second baffle
Drainage baffle between 42.In illustrative embodiments of the present invention, the first baffle 41 is C-shaped and is located between the annular
With a part of annular gap 6 described in partial occlusion in gap 6；The annular gap 6 further includes not hidden by the first baffle 41
First opening portion 411 of gear.The second baffle 42 is C-shaped and is located in the annular gap 6 with annular described in partial occlusion
The a part in gap 6；The annular gap 6 further includes the second opening portion 421 that do not blocked by the second baffle 42.Described
One baffle 41 is located at the interface of air inlet pipe 2 and escape pipe 3 with the second baffle 42.
In illustrative embodiments of the present invention, the drainage baffle 4 includes from the second baffle 42 to described first
The first the second drainage baffle for draining baffle 43, extending from the first baffle 41 to the second baffle 42 that baffle 41 extends
44 and be connected between the first baffle 41 and the second baffle 42 third drainage baffle 45, wherein it is described annular between
Gap 6 be divided into positioned at it is described first drainage baffle 43 and the third drainage baffle 45 between the first cavity 61, be located at institute
It states the second cavity 62 between the first drainage baffle 43 and the second drainage baffle 44 and is located at the second drainage baffle
Third cavity 63 between 44 and third drainage baffle 45.Second opening portion 421 is by first cavity 61 and institute
The outlet of air inlet pipe 2 is stated, first cavity 61 is connected to second cavity 62, second cavity 62 and institute
The connection of third cavity 63 is stated, the third cavity 63 is connected to by first opening portion 411 with main chamber body 13.
The second baffle 42 is equipped with positioned at the first end portion 422 and second end portion 423 of C-shaped end, and described the
One drainage baffle 43 extends from the first end portion 422.It is set between the first drainage baffle 43 and the first baffle 41
There is the first notch 431 for being connected to first cavity 61 and second cavity 62.
The first baffle 41 is equipped with third terminal part 412 and the 4th terminal part 413 positioned at C-shaped end, wherein institute
Third terminal part 412 is stated to axially align with the second end portion 423.Described second drains baffle 44 from the 4th terminal part
413 extend, and are equipped between the second drainage baffle 44 and the second baffle 42 and be connected tos second cavity 62 and described the
Second notch 441 of three cavitys 63.The third drainage baffle 45 connects the second end portion 423 and the third terminal part
412。
It is appreciated that the quantity and length of drainage baffle can design according to actual needs, to lengthen the propagation of sound
Distance, to reach the function of eliminating specific low frequency noise.
It please join shown in Fig. 5, exhaust is entered by air inlet pipe 2, is left from escape pipe 3.The raw a part of sound of exhaust stream movable property
Sound enters the first cavity 61 from the second opening portion 421, then successively passes through the first notch 431, the second cavity 62, the second notch again
441, third cavity 63 and the first opening portion 411 eventually enter into main cavity 13 and decay in main cavity 13, to eliminate
Specific low frequency noise.
Above embodiments are merely to illustrate the present invention and not limit the technical scheme described by the invention, to this specification
Understanding should based on person of ordinary skill in the field, although this specification referring to the above embodiments to the present invention
Detailed description is had been carried out, still, those skilled in the art should understand that, person of ordinary skill in the field is still
Can so modify or equivalently replace the present invention, and all do not depart from the spirit and scope of the present invention technical solution and
It is improved, and should all be covered in scope of the presently claimed invention.
Claims (10)
1. a kind of muffler comprising shell, the air inlet pipe being at least partially inserted into the shell and be at least partially inserted into institute
The escape pipe in shell is stated, wherein the shell includes first end cover, the second end cover opposite with the first end cover and position
Main cavity between the first end cover and the second end cover, the air inlet pipe and the escape pipe are each passed through described the
One end cap and the second end cover enter in main chamber body, to form weight in escape pipe described in the air inlet pipe partial insertion
Folded part, the lap are equipped with the annular gap between the air inlet pipe and the escape pipe, which is characterized in that institute
Stating muffler further includes the baffle in the annular gap the annular gap to be divided into the acoustic transmission path of revolution
Component.
2. muffler as described in claim 1, it is characterised in that：First is equipped between the air inlet pipe and the second end cover
Spacing is equipped with the second spacing between the escape pipe and the first end cover.
3. muffler as claimed in claim 2, it is characterised in that：The baffle component includes positioned at the one of the lap
The first baffle at end, positioned at the lap the other end second baffle and be located at the first baffle and described second
Drainage baffle between baffle.
4. muffler as claimed in claim 3, it is characterised in that：The first baffle is C-shaped and is located at the annular gap
In with a part of annular gap described in partial occlusion；The annular gap further includes first not blocked by the first baffle
Opening portion.
5. muffler as claimed in claim 4, it is characterised in that：The second baffle is C-shaped and is located at the annular gap
In with a part of annular gap described in partial occlusion；The annular gap further includes second not blocked by the second baffle
Opening portion.
6. muffler as claimed in claim 5, it is characterised in that：The drainage baffle includes from the second baffle to described
First baffle extend first drainage baffle, extends from the first baffle to the second baffle second drain baffle and
The third drainage baffle being connected between the first baffle and the second baffle, wherein the annular gap is divided into position
In it is described first drainage baffle and the third drainage baffle between the first cavity, be located at it is described first drainage baffle with it is described
The second cavity between second drainage baffle and the between the second drainage baffle and third drainage baffle
First cavity and the outlet of the air inlet pipe are got up in three cavitys, second opening portion, first cavity with
Second cavity connection, second cavity are connected to the third cavity, and first opening portion is by the third cavity
It is connected to main chamber body.
7. muffler as claimed in claim 6, it is characterised in that：The second baffle is equipped with positioned at the first end of C-shaped end
End and second end portion, the first drainage baffle extend from the first end portion, the first drainage baffle and institute
State the first notch for being equipped between first baffle and being connected to first cavity and second cavity.
8. muffler as claimed in claim 7, it is characterised in that：The first baffle is equipped with positioned at the third end of C-shaped end
End and the 4th terminal part, wherein the third terminal part is axially aligned with the second end portion, the second drainage gear
Piece extends from the 4th terminal part, is equipped between the second drainage baffle and the second baffle and is connected to second cavity
With the second notch of the third cavity.
9. muffler as claimed in claim 8, it is characterised in that：Third drainage baffle connect the second end portion with
The third terminal part.
10. muffler as described in claim 1, it is characterised in that：The air inlet pipe and the escape pipe are coaxially disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811095308.3A CN108825331B (en) | 2018-09-19 | 2018-09-19 | Silencer (muffler) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811095308.3A CN108825331B (en) | 2018-09-19 | 2018-09-19 | Silencer (muffler) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108825331A true CN108825331A (en) | 2018-11-16 |
| CN108825331B CN108825331B (en) | 2023-09-15 |
Family
ID=64149443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811095308.3A Active CN108825331B (en) | 2018-09-19 | 2018-09-19 | Silencer (muffler) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108825331B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172508A (en) * | 1976-11-12 | 1979-10-30 | Moss Leon C | Exhaust silencers |
| CN2303086Y (en) * | 1997-01-23 | 1999-01-06 | 林信胜 | Exhaust tail tube of internal combustion engine |
| KR19990031637U (en) * | 1997-12-31 | 1999-07-26 | 정몽규 | Automotive Silencer |
| CN1308181A (en) * | 1999-10-20 | 2001-08-15 | 德古萨－于尔斯股份公司 | Muffler with catalytic device for two-stroke engine and its catalytic device |
| JP2005233011A (en) * | 2004-02-17 | 2005-09-02 | Calsonic Kansei Corp | Muffler |
| CN201280964Y (en) * | 2008-10-30 | 2009-07-29 | 隆鑫工业有限公司 | Exhaust for gasoline engine |
| CN103527297A (en) * | 2013-08-20 | 2014-01-22 | 湖南吉利汽车部件有限公司 | Automobile exhaust thermal reaction purifier |
| CN204716338U (en) * | 2015-04-09 | 2015-10-21 | 北京市通州迪拉汽车附件有限公司 | Medium and low frequency mobile muffler |
| US20160252204A1 (en) * | 2015-02-26 | 2016-09-01 | Adriaan DeVilliers | Compact Modular Low Resistance Broadband Acoustic Silencer |
| CN205638605U (en) * | 2016-05-26 | 2016-10-12 | 重庆瑞鼎科技有限公司 | Car increases journey ware silencer |
| CN207420668U (en) * | 2017-09-20 | 2018-05-29 | 宝沃汽车（中国）有限公司 | Silencer and with its vehicle |
| CN208803888U (en) * | 2018-09-19 | 2019-04-30 | 上海天纳克排气系统有限公司 | Muffler |
| CN112253302A (en) * | 2020-10-26 | 2021-01-22 | 东风汽车集团有限公司 | Electrodeless tuning structure and noise elimination system |
-
2018
- 2018-09-19 CN CN201811095308.3A patent/CN108825331B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172508A (en) * | 1976-11-12 | 1979-10-30 | Moss Leon C | Exhaust silencers |
| CN2303086Y (en) * | 1997-01-23 | 1999-01-06 | 林信胜 | Exhaust tail tube of internal combustion engine |
| KR19990031637U (en) * | 1997-12-31 | 1999-07-26 | 정몽규 | Automotive Silencer |
| CN1308181A (en) * | 1999-10-20 | 2001-08-15 | 德古萨－于尔斯股份公司 | Muffler with catalytic device for two-stroke engine and its catalytic device |
| JP2005233011A (en) * | 2004-02-17 | 2005-09-02 | Calsonic Kansei Corp | Muffler |
| CN201280964Y (en) * | 2008-10-30 | 2009-07-29 | 隆鑫工业有限公司 | Exhaust for gasoline engine |
| CN103527297A (en) * | 2013-08-20 | 2014-01-22 | 湖南吉利汽车部件有限公司 | Automobile exhaust thermal reaction purifier |
| US20160252204A1 (en) * | 2015-02-26 | 2016-09-01 | Adriaan DeVilliers | Compact Modular Low Resistance Broadband Acoustic Silencer |
| CN204716338U (en) * | 2015-04-09 | 2015-10-21 | 北京市通州迪拉汽车附件有限公司 | Medium and low frequency mobile muffler |
| CN205638605U (en) * | 2016-05-26 | 2016-10-12 | 重庆瑞鼎科技有限公司 | Car increases journey ware silencer |
| CN207420668U (en) * | 2017-09-20 | 2018-05-29 | 宝沃汽车（中国）有限公司 | Silencer and with its vehicle |
| CN208803888U (en) * | 2018-09-19 | 2019-04-30 | 上海天纳克排气系统有限公司 | Muffler |
| CN112253302A (en) * | 2020-10-26 | 2021-01-22 | 东风汽车集团有限公司 | Electrodeless tuning structure and noise elimination system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108825331B (en) | 2023-09-15 |
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