CN207297135U - A kind of automobile silencing exhaust pipe - Google Patents
A kind of automobile silencing exhaust pipe Download PDFInfo
- Publication number
- CN207297135U CN207297135U CN201721261953.9U CN201721261953U CN207297135U CN 207297135 U CN207297135 U CN 207297135U CN 201721261953 U CN201721261953 U CN 201721261953U CN 207297135 U CN207297135 U CN 207297135U
- Authority
- CN
- China
- Prior art keywords
- cavity
- sound
- exhaust pipe
- filter
- sound baffle
- 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.)
- Expired - Fee Related
Links
- 230000030279 gene silencing Effects 0.000 title claims abstract description 31
- 239000011358 absorbing material Substances 0.000 claims abstract description 12
- -1 filter sound baffle Substances 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 230000006837 decompression Effects 0.000 description 3
- 230000003584 silencer Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a kind of automobile silencing exhaust pipe, it includes air inlet, air-flow cavity, sound attenuation features, gas outlet, it is characterised in that the air-flow cavity is made of interconnected the first cavity, the second cavity and the 3rd cavity；The sound attenuation features are made of sound-absorbing material, filter sound baffle, buffer dividing plate, hush pipe；The filter sound baffle is divided into long filter sound baffle and short filter sound baffle, is all located in first cavity；The sound-absorbing material is positioned at the long sound baffle of filtering towards the side of the air inlet；The buffer dividing plate is between first cavity and the second cavity；The hush pipe is between second cavity and the 3rd cavity.A kind of automobile silencing exhaust pipe structure of the utility model is simple, and design is reasonable, easy to operate, and air-flow is acted on by multi-level ground sound-deadening and noise-reducing, can greatly reduce the noise in vehicle exhaust.
Description
Technical field
It the utility model is related to gas noise reduction or the denoising device field of general machine or engine, and in particular to a kind of vapour
Car silencing exhaust pipe.
Background technology
With the fast development of China's economy, the living standard of people is also constantly improving, and automobile possesses in city
The growth of amount, while the life of people's schedule is facilitated, also causes strong influence to social environment.Automobile noise is
As the main composition part of city noise, the especially exhaust noise in car running process, it is the main noise of automobile
Source.It is mainly good using having by the combustion system and design of gaseous mixture in rationalization's cylinder to control automobile exhaust noise
The silencer of performance.At present, realize reduce automobile exhaust noise most directly, most efficient method be exactly to use exhaust silencer.
In order to reach the optimal acoustic attenuation performance of silencer, while ensure that power loss as few as possible is in the urgent need to address at this stage again
Problem.To reduce exhaust noise, motor vehicle generally uses silencing exhaust pipe, and automobile silencing exhaust pipe is one and its ripe production
Product, its basic structure and operation principle decades are almost unchanged, and it is novel, cheap and more general to be now badly in need of a kind of structure
The more preferable silencing exhaust pipe of erasure effect of noise reduction product.
Utility model content
In view of this, it is overcome the deficiencies in the prior art, the utility model provides a kind of automobile silencing exhaust pipe, this practicality
A kind of new automobile silencing exhaust pipe structure is simple, and design is reasonable, easy to operate, and air-flow is made by multi-level sound-deadening and noise-reducing
With the noise in vehicle exhaust can be greatly reduced.
The technical solution that the utility model is taken by solution its technical problem is：
A kind of automobile silencing exhaust pipe, it includes air inlet, air-flow cavity, sound attenuation features, gas outlet, it is characterised in that
The air-flow cavity is made of interconnected the first cavity, the second cavity and the 3rd cavity；The sound attenuation features are by sound absorber
Material, filter sound baffle, buffer dividing plate, hush pipe composition；The filter sound baffle is divided into long filter sound baffle and short filter sound baffle, is all located at
In first cavity；The sound-absorbing material is positioned at the long sound baffle of filtering towards the side of the air inlet；The buffer compartment
Plate is between first cavity and the second cavity；The hush pipe is between second cavity and the 3rd cavity.
Preferably, the long filter sound baffle and short each one of a sound baffle of filter are mutually combined and are arranged as one group of filter sound gear
Plate, the filter sound baffle group number are at least 2 groups；Its object is to repeatedly reflect sound wave, reach enhancing noise elimination effect.
It is further preferred that the arrangement that misplaces between every group of the sound baffle of filter；Its object is to fully in air-flow
Sound wave carries out sound-absorbing, reflection, interference, the noise reduction purpose being optimal.
Preferably, the filter sound baffle is diagonally disposed in first cavity inner wall；It is more its object is to be carried out to sound wave
The reflection of angle, by the adjustment of more sound wave reflection paths, achievees the purpose that to strengthen noise reduction.
Preferably, the sound-absorbing material is fixed on the long filter sound baffle by adhesion or spraying method.
Preferably, the buffer dividing plate is equipped with multiple through holes；Its object is to carry out shunting decompression to air-flow, reach increasing
The purpose of strong noise reduction.
It is further preferred that the through-hole diameter is 4-6mm.
Preferably, the hush pipe is equipped with honeycomb hole；Its object is to carry out shunting decompression to air-flow, make air-flow under
One noise reduction chamber fully produces interference and then sound-deadening and noise-reducing, achievees the purpose that to strengthen noise reduction.
It is further preferred that a diameter of 4-6mm of honeycomb hole, including axial hole and radial hole, punching rate up to 20~
25%.
It is further preferred that the radial hole is circumferentially distributed on the hush pipe side wall, quantity is 20-30；The axis
The hush pipe distal end faces, pitch of holes 5-8mm are evenly distributed with to hole, number is 70-90.
Compared to the prior art, the beneficial effects of the utility model are：
A kind of automobile silencing exhaust pipe structure of the utility model is simple, and design is reasonable, easy to operate.Air-flow is from air inlet
Into the first cavity, the second cavity is entered after the noise-reduction of filtered sound baffle, sound-absorbing material and buffer dividing plate, it is empty second
The honeycomb porous structure of intracavitary, which is depressured after noise reduction air-flow into row buffering, enters the 3rd cavity, and it is dry that the 3rd cavity interior air-flow carries out reflection
Relate to after noise reduction and to be discharged through gas outlet extraneous, the automobile silencing exhaust pipe sound-deadening and noise-reducing effect multiple to air-flow makes discharge
Pneumatic noise substantially reduces.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of automobile silencing exhaust pipe of the preferred embodiment of the utility model.
Fig. 2 is a kind of cushioning fender sectional view of automobile silencing exhaust pipe of the preferred embodiment of the utility model.
Fig. 3 is a kind of silencing pot structure diagram of automobile silencing exhaust pipe of the preferred embodiment of the utility model.
Caption：1st, air inlet；2nd, sound-absorbing material；3rd, sound baffle is filtered；4th, the first cavity；5th, buffer dividing plate；5-1, through hole；6、
Hush pipe；6-1, radial hole；6-2, axial hole；7th, gas outlet；8th, tube wall；9th, the second cavity；10th, the 3rd cavity.
Embodiment
Below in conjunction with the attached drawing in the utility model, the technical solution of the utility model is clearly and completely retouched
State, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on this
Embodiment in utility model, those of ordinary skill in the art obtained without making creative work it is all its
Its embodiment, shall fall within the protection scope of the present invention.
A kind of automobile silencing exhaust pipe as shown in Figures 1 to 3, it includes air inlet 1, air-flow cavity, sound attenuation features, outlet
Mouth 7, the air-flow cavity are made of interconnected the first cavity 4, the second cavity 9 and the 3rd cavity 10；The noise reduction
Component is by sound-absorbing material 2, and filter sound baffle 3, buffer dividing plate 5, hush pipe 6 forms；The filter sound baffle 3 divides filters sound baffle to be long
With short filter sound baffle, it is all located in first cavity 4；The sound-absorbing material 2 faces the air inlet 1, positioned at the length
Filter on sound baffle；The buffer dividing plate 5 is between the first cavity 4 and the second cavity 9；The hush pipe 6 is located at second
Between 9 and the 3rd cavity 10 of cavity；8 be tube wall in figure.
More specifically, the filter sound baffle 3, filters the short filter sound baffle of sound baffle one by a length and forms one group, be arranged symmetrically in
In first cavity 4, misplace arrangement between every group, and the filter sound baffle 3 is oblique along air inlet direction arrangement；It is described slow
Rush partition plate 5 and be equipped with through hole 5-1, the through-hole diameter is 4-6mm；The hush pipe 6 is equipped with honeycomb hole, and the honeycomb hole is straight
Footpath is 4-6mm, including axial hole 6-2 and radial hole 6-1；The axial hole 6-2 is located at 6 distal end faces of hush pipe, Kong Jian
Away from for 5-8mm, number is 70-90；The radial hole 6-1 is arranged circumferentially on 6 side wall of hush pipe, and number is 20-30.
Using a kind of above-mentioned automobile silencing exhaust pipe, after air-flow enters the first cavity 4 from air inlet 1, airflow
Sectional area increases, and air velocity slows down, and the sound deadening time is extended, in the diagonally disposed filter sound baffle 3 and the suction
Under 2 collective effect of sound material, reflection, interference and absorption to sound wave therein just multi-angle, reach first time sound-deadening and noise-reducing
Purpose；Shunting noise reduction is carried out to air-flow by the effect of the buffer dividing plate 5 and its through hole 5-1 again afterwards, reaches second
The purpose of secondary sound-deadening and noise-reducing；Into after the second cavity 9, sound wave is shunted again through honeycomb hole described on hush pipe 6
After decompression, enter the 3rd cavity 10 along different directions, achieve the purpose that third time sound-deadening and noise-reducing；In the 3rd cavity 10
Interior, the air-flows of different directions carries out reflection interference repeatedly, achievees the purpose that the 4th sound-deadening and noise-reducing, completes after noise reduction air-flow from going out
Gas port 7 is discharged, and whole noise reduction process is completed.
A kind of automobile silencing exhaust pipe structure of the utility model is simple, and design is reasonable, and easy to operate, air-flow is subject to baffle
Stop, and mutually impacted in perforate inner casing, slow down air-flow velocity, subtracted by the multiple ventholes offered in buffer dividing plate
Slow pressure, absorbs when exhaust gas noise passes through sound-absorbing material and realizes that silencing function and then exhaust gas are discharged by air outlet pipe.
The some embodiments described above implemented example and only express the utility model, it describes more specific and detailed
Carefully, but it should not be interpreted as limiting the scope of the present invention.It should be pointed out that for the general of this area
For logical technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these are all
Belong to the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of automobile silencing exhaust pipe, it includes air inlet, air-flow cavity, sound attenuation features, gas outlet, it is characterised in that institute
Air-flow cavity is stated to be made of interconnected the first cavity, the second cavity and the 3rd cavity；The sound attenuation features by sound-absorbing material,
Filter sound baffle, buffer dividing plate, hush pipe composition；The filter sound baffle is divided into long filter sound baffle and short filter sound baffle, is all located at institute
State in the first cavity；The sound-absorbing material is positioned at the long sound baffle of filtering towards the side of the air inlet；The buffer dividing plate
Between first cavity and the second cavity；The hush pipe is between second cavity and the 3rd cavity.
A kind of 2. automobile silencing exhaust pipe according to claim 1, it is characterised in that the long filter sound baffle and described short
Each combination of filter sound baffle is arranged as one group of filter sound baffle, and the filter sound baffle group number is at least 2 groups.
3. a kind of automobile silencing exhaust pipe according to claim 2, it is characterised in that wrong between every group of the sound baffle of filter
Position arrangement.
A kind of 4. automobile silencing exhaust pipe according to claim 1, it is characterised in that it is described filter sound baffle it is diagonally disposed
First cavity inner wall.
A kind of 5. automobile silencing exhaust pipe according to claim 1, it is characterised in that the sound-absorbing material by adhesion or
Spraying method is fixed on the long filter sound baffle.
6. a kind of automobile silencing exhaust pipe according to claim 1, it is characterised in that the buffer dividing plate is equipped with multiple
Through hole.
7. a kind of automobile silencing exhaust pipe according to claim 6, it is characterised in that the through-hole diameter is 4-6mm.
8. a kind of automobile silencing exhaust pipe according to claim 1, it is characterised in that the hush pipe is equipped with honeycomb hole.
A kind of 9. automobile silencing exhaust pipe according to claim 8, it is characterised in that a diameter of 4-6mm of honeycomb hole,
Including axial hole and radial hole, punching rate is up to 20~25%.
10. a kind of automobile silencing exhaust pipe according to claim 9, it is characterised in that the radial hole is circumferentially distributed on
The hush pipe side wall, quantity are 20-30；The axial hole is evenly distributed with the hush pipe distal end faces, pitch of holes 5-8mm,
Number is 70-90.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721261953.9U CN207297135U (en) | 2017-09-27 | 2017-09-27 | A kind of automobile silencing exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721261953.9U CN207297135U (en) | 2017-09-27 | 2017-09-27 | A kind of automobile silencing exhaust pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207297135U true CN207297135U (en) | 2018-05-01 |
Family
ID=62440970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721261953.9U Expired - Fee Related CN207297135U (en) | 2017-09-27 | 2017-09-27 | A kind of automobile silencing exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207297135U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810330A (en) * | 2020-05-28 | 2020-10-23 | 重庆长安汽车股份有限公司 | Decompression valve sound-absorbing structure and vehicle |
| CN111894834A (en) * | 2020-08-11 | 2020-11-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Silencer and compressor |
-
2017
- 2017-09-27 CN CN201721261953.9U patent/CN207297135U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810330A (en) * | 2020-05-28 | 2020-10-23 | 重庆长安汽车股份有限公司 | Decompression valve sound-absorbing structure and vehicle |
| CN111894834A (en) * | 2020-08-11 | 2020-11-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Silencer and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |