CN108470561A - A kind of full range impedance composite muffler - Google Patents
A kind of full range impedance composite muffler Download PDFInfo
- Publication number
- CN108470561A CN108470561A CN201810399341.9A CN201810399341A CN108470561A CN 108470561 A CN108470561 A CN 108470561A CN 201810399341 A CN201810399341 A CN 201810399341A CN 108470561 A CN108470561 A CN 108470561A
- Authority
- CN
- China
- Prior art keywords
- chambers
- silencer
- acoustical cotton
- chamber
- partition
- 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
Abstract
The invention discloses a kind of full range impedance composite mufflers, including first connecting portion, the first noise elimination portion, the second noise elimination portion, second connecting portion, it is characterized in that, first noise elimination portion is by four noise elimination cavities, one chamber, two chambers, three chambers, four chambers composition, wherein a chamber fills the first acoustical cotton, two chambers fill the second acoustical cotton, three chambers are expansion cavity, and four chambers fill third acoustical cotton；First acoustical cotton, the second acoustical cotton, third acoustical cotton density are all different.Equally distributed through-hole is provided in first partition in one chamber, second partition, third partition board not trepanning, a chamber is set there was only small part air-flow process, four chambers pass through almost without air-flow, and to reduce the temperature of a chamber, four chambers, that reduces rubber mounting block radiates to obtain heat, extend the service life of rubber mounting block, pipe increases casing after silencer intermediate tube and silencer, interrupts standing wave, reduces noise.
Description
Technical field
The present invention relates to a kind of silencers, more particularly to a kind of full range impedance composite muffler.
Background technology
Silencer be mounted on the gas channel of air powered equipment (such as internal combustion engine, air blower and air compressor machine) or into,
The device of reduction noise in exhaust system.Silencer can reduce noise, rationalization's air-flow and Temperature Distribution.It is that control is made an uproar
The effective tool of sound.Normal straight tube perforation silencer, structure is the straight tube of an endcapped, and many aperture masters are drilled on tube wall
If using the frequency spectrum of jet noise as foundation, if keeping the gross area of spout constant and being replaced with many small spouts, when
Air-flow through small holes when, jet noise frequency spectrum will shift to high frequency or hyperfrequency, make the audible sound constituent reduction in frequency spectrum, but
It is to still remain sound deadening capacity deficiency or exist to pass through frequency.Meanwhile the less consideration silencer internal structure pair of arc exhaust system
The influence of system temperature field, there are the excessively high problems of rubber mounting deblocking temperature.
Invention content
In view of this, the present invention provides a kind of full range impedance composite muffler, solves sound deadening capacity deficiency well
Or there are problems that passing through frequency, while by the way that silencer muffler partition plate and core pipe is rationally arranged, adjust suitable acoustical cotton density,
The number of openings and position, while solving the problems, such as that rubber mounting deblocking temperature is excessively high.
To achieve the above object, the present invention provides the following technical solutions：
A kind of silencer, including first connecting portion, the first noise elimination portion, the second noise elimination portion, second connecting portion, feature exist
In, first noise elimination portion is by four noise elimination cavities, a chamber, two chambers, three chambers, four chambers composition, wherein a chamber fills the first acoustical cotton,
Two chambers fill the second acoustical cotton, and three chambers are expansion cavity, and four chambers fill third acoustical cotton；
First acoustical cotton, the second acoustical cotton, third acoustical cotton density are all different.
Preferably, a kind of silencer, which is characterized in that four noise elimination cavities by drive end bearing bracket, the first core pipe, first every
Plate, second partition, the second core pipe, third partition board, rear end cap, silencer cylinder composition.
Preferably, a kind of silencer, which is characterized in that first acoustical cotton, first partition, the second acoustical cotton, second
Partition board, third partition board, third acoustical cotton are set gradually along gas flow direction.
Preferably, a kind of silencer, which is characterized in that have first partition in a chamber and two chambers, opened in first partition
There is through-hole.
Preferably, a kind of silencer, which is characterized in that two chamber and three chambers have second partition, three chambers and four chambers to have
Three partition boards, second partition and third partition board not trepanning.
Preferably, a kind of silencer, which is characterized in that in the first core pipe outer ring and four chambers in a chamber, two chambers
Second core pipe outer ring is provided with equally distributed through-hole.
Preferably, a kind of silencer, which is characterized in that second noise elimination portion is by silencer intermediate tube, casing, silencer
Pipe forms afterwards.
Preferably, a kind of silencer, which is characterized in that described sleeve pipe manages it after being mounted on silencer intermediate tube and silencer
Between.
Preferably, a kind of automobile, it is characterised in that the automobile includes any silencer stated of claim 1 to 8.
It can be seen from the above technical scheme that a kind of full range impedance composite muffler provided by the invention, silencer
Four are formed by drive end bearing bracket, the first core pipe, first partition, second partition, the second core pipe, third partition board, rear end cap, silencer cylinder
A noise elimination cavity is a chamber, two chambers, three chambers, four chambers respectively, and three chambers are expansion cavity, and a chamber, two chambers, four chambers are filled different close respectively
The acoustical cotton of degree reaches the volume absorption to different frequency, so that silencer is had larger sound deadening capacity in different frequency sections, avoid
By frequency, it can preferably solve the problems, such as that noise elimination is insufficient or passes through frequency in this way, wherein be provided in first partition uniformly
The through-hole of distribution, second partition, third partition board not trepanning make a chamber there was only small part air-flow process, and four chambers are almost without air-flow
By to reduce the temperature of a chamber, four chambers, that reduces rubber mounting block radiates to obtain heat, and temperature is relatively low, and the service life extends；Together
When, because managing long after silencer intermediate tube and silencer, standing wave is will produce, it is managed after silencer intermediate tube and silencer
Between installation casing to interrupt standing wave, reduce noise.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the cross-sectional view of silencer provided in an embodiment of the present invention；
Fig. 2 is the first noise elimination of silencer provided in an embodiment of the present invention portion structural schematic diagram；
Fig. 3 is the second noise elimination of silencer provided in an embodiment of the present invention portion structural schematic diagram；
Fig. 4 is silencer first partition structural schematic diagram provided in an embodiment of the present invention；
Fig. 5 is second and third diaphragm structure schematic diagram of silencer provided in an embodiment of the present invention；
Wherein, 1 is first connecting portion, and 21 be drive end bearing bracket, and 22 be the first core pipe, and 215 be the first acoustical cotton, 23 for first every
Plate, 216 be the second acoustical cotton, and 24 be second partition, and 25 be silencer cylinder, and 26 be the second core pipe, and 27 be third partition board, 217
It is rear end cap for third acoustical cotton, 28,29 be rubber mounting block, and 210 be a chamber, and 211 be two chambers, and 213 be three chambers, and 214 be four
Chamber, 31 be silencer intermediate tube, and 32 be casing, and 33 is manage after silencer, 4 be second connecting portion.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of silencer provided in an embodiment of the present invention, including：First connecting portion 1, drive end bearing bracket 21, the first core pipe 22, the
One acoustical cotton 215, first partition 23, the second acoustical cotton 216, second partition 24, silencer cylinder 25, the second core pipe 26, third
Partition board 27, third acoustical cotton 217, rear end cap 28, rubber mounting block 29, a chamber 210, two chambers 211, three chambers 213, four chambers 214 disappear
Sound device intermediate tube 31, casing 32, pipe 33 after silencer, second connecting portion 4.
In the present invention, silencer is by drive end bearing bracket 21, rear end cap 28, first partition 23, second partition 24, third partition board
27, silencer cylinder 25 and the first core pipe 22, the second core pipe 26 form four noise elimination cavities, are a chamber 210, two chambers 211, three respectively
Chamber 213, four chambers 214, wherein three chambers 213 are expansion cavity, a chamber 210, two chambers 211, four chambers 214 fill the suction of different densities respectively
Sound cotton, a chamber 210 fill the first acoustical cotton 215, and two chambers 211 fill the second acoustical cotton 216, and four chambers 214 fill third acoustical cotton
217, when having in a chamber 210, when passing through frequency, two chambers 211 can pass through frequency meeting to being absorbed again by frequency in two chambers 211
It is absorbed again in four chambers 214, silencer is made to have larger sound deadening capacity in different frequency sections, avoid passing through frequency, Ke Yigeng
Good solves the problems, such as that noise elimination is insufficient or passes through frequency.
In the present invention, it is provided with the hole being evenly arranged in first partition 23, is not opened on second partition 24, third partition board 27
Hole makes a chamber 210 only have small part air-flow to pass through, and four chambers 214 pass through almost without air-flow.To reduce a chamber 210, four chambers
214 temperature, that reduces rubber mounting block 29 radiates to obtain heat, and temperature is relatively low, and the service life extends.
In the present invention, pipe 33 will produce standing wave because of the long reason of length after silencer intermediate tube 31 and silencer,
Casing 32 is installed to interrupt standing wave after silencer intermediate tube 31 and silencer between pipe 33, reduces noise.
In the present invention, 210 part of a chamber of the first core pipe 22 is uniformly provided with hole, wherein 22 1 Zhou Kongwei of the first core pipe
24,24 rows amount to 576 holes, and two chambers, 211 part of the second core pipe 26 is uniformly provided with hole, wherein the first core pipe 22 1 weeks
Hole is 23, and 11 rows amount to 253 holes, and four chambers, 214 part of the second core pipe 26 is uniformly provided with hole, wherein the second core pipe 26
One collar aperture is 24, and 24 rows amount to 576 holes.
In the present invention, acoustical cotton and partition board are according to the first acoustical cotton 215, first partition 23, the second acoustical cotton 216,
Two partition boards 24, third partition board 27, third acoustical cotton 217 are set gradually along gas flow direction, and the first acoustical cotton 215, second is inhaled
Sound cotton 216 is filled in the space between the first core pipe 22 and silencer cylinder 25, and third acoustical cotton 217 is filled in the second core pipe
In space between 26 and silencer cylinder 25, first partition 23 separates the first acoustical cotton 215 and the second acoustical cotton 216.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (9)
1. a kind of silencer, including first connecting portion, the first noise elimination portion, the second noise elimination portion, second connecting portion, which is characterized in that
First noise elimination portion is made of four noise elimination cavities, a chamber, two chambers, three chambers, four chambers, wherein a chamber the first acoustical cotton of filling, two
Chamber fills the second acoustical cotton, and three chambers are expansion cavity, and four chambers fill third acoustical cotton；
First acoustical cotton, the second acoustical cotton, third acoustical cotton density are all different.
2. silencer according to claim 1, which is characterized in that four noise elimination cavities are by drive end bearing bracket, the first core pipe,
One partition board, second partition, the second core pipe, third partition board, rear end cap, silencer cylinder composition.
3. silencer according to claim 1, which is characterized in that first acoustical cotton, first partition, the second sound-absorbing
Cotton, second partition, third partition board, third acoustical cotton are set gradually along gas flow direction.
4. silencer according to claim 3, which is characterized in that have first partition in a chamber and two chambers, first every
Equally distributed through-hole is provided on plate.
5. silencer according to claim 3, which is characterized in that two chamber and three chambers have second partition, three chambers and four
Chamber has third partition board, second partition and third partition board not trepanning.
6. silencer according to claim 1, which is characterized in that in the first core pipe and four chambers in a chamber, two chambers
The second core pipe be provided with equally distributed through-hole.
7. silencer according to claim 1, which is characterized in that second noise elimination portion by silencer intermediate tube, casing,
Pipe forms after silencer.
8. silencer according to claim 7, which is characterized in that described sleeve pipe is mounted on silencer intermediate tube and silencer
Afterwards between pipe.
9. a kind of automobile, it is characterised in that the automobile includes any silencer of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399341.9A CN108470561A (en) | 2018-04-28 | 2018-04-28 | A kind of full range impedance composite muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399341.9A CN108470561A (en) | 2018-04-28 | 2018-04-28 | A kind of full range impedance composite muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108470561A true CN108470561A (en) | 2018-08-31 |
Family
ID=63263880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810399341.9A Pending CN108470561A (en) | 2018-04-28 | 2018-04-28 | A kind of full range impedance composite muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108470561A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115257976A (en) * | 2022-07-22 | 2022-11-01 | 北京星光陆通视音频广播技术有限公司 | Sound insulation structure and audio frequency car |
Citations (7)
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|---|---|---|---|---|
| CN2646393Y (en) * | 2003-08-27 | 2004-10-06 | 洛阳西苑车辆与动力检验所有限公司 | Four-chamber impedance composite type exhaust muffler of engine |
| JP2006046121A (en) * | 2004-08-02 | 2006-02-16 | Toyota Motor Corp | Exhaust structure |
| DE202006003989U1 (en) * | 2006-03-14 | 2006-05-11 | Festo Ag & Co. | Compressed air sound absorber for pneumatic applications comprises a sound absorbing unit having several absorption zones with different frequency-dependent sound damping properties |
| KR20120037160A (en) * | 2010-10-11 | 2012-04-19 | 동원테크 주식회사 | Muffler for vehicle |
| CN106121774A (en) * | 2016-07-25 | 2016-11-16 | 南京航空航天大学 | A kind of low noise combined type multi-cavity exhaust silencer |
| CN205908337U (en) * | 2016-06-30 | 2017-01-25 | 浙江吉利控股集团有限公司 | Compound silencer and have its vehicle |
| CN208351924U (en) * | 2018-04-28 | 2019-01-08 | 力帆实业(集团)股份有限公司 | A kind of full range impedance composite muffler and its automobile |
-
2018
- 2018-04-28 CN CN201810399341.9A patent/CN108470561A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646393Y (en) * | 2003-08-27 | 2004-10-06 | 洛阳西苑车辆与动力检验所有限公司 | Four-chamber impedance composite type exhaust muffler of engine |
| JP2006046121A (en) * | 2004-08-02 | 2006-02-16 | Toyota Motor Corp | Exhaust structure |
| DE202006003989U1 (en) * | 2006-03-14 | 2006-05-11 | Festo Ag & Co. | Compressed air sound absorber for pneumatic applications comprises a sound absorbing unit having several absorption zones with different frequency-dependent sound damping properties |
| KR20120037160A (en) * | 2010-10-11 | 2012-04-19 | 동원테크 주식회사 | Muffler for vehicle |
| CN205908337U (en) * | 2016-06-30 | 2017-01-25 | 浙江吉利控股集团有限公司 | Compound silencer and have its vehicle |
| CN106121774A (en) * | 2016-07-25 | 2016-11-16 | 南京航空航天大学 | A kind of low noise combined type multi-cavity exhaust silencer |
| CN208351924U (en) * | 2018-04-28 | 2019-01-08 | 力帆实业(集团)股份有限公司 | A kind of full range impedance composite muffler and its automobile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115257976A (en) * | 2022-07-22 | 2022-11-01 | 北京星光陆通视音频广播技术有限公司 | Sound insulation structure and audio frequency car |
| CN115257976B (en) * | 2022-07-22 | 2024-01-12 | 北京星光陆通视音频广播技术有限公司 | Sound insulation structure and audio vehicle |
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