CN208702508U - A kind of mute exhaust pipe - Google Patents
A kind of mute exhaust pipe Download PDFInfo
- Publication number
- CN208702508U CN208702508U CN201821172209.6U CN201821172209U CN208702508U CN 208702508 U CN208702508 U CN 208702508U CN 201821172209 U CN201821172209 U CN 201821172209U CN 208702508 U CN208702508 U CN 208702508U
- Authority
- CN
- China
- Prior art keywords
- inner housing
- exhaust pipe
- cone
- pipe according
- mute exhaust
- 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
- 238000013016 damping Methods 0.000 claims abstract description 17
- 239000010410 layer Substances 0.000 claims description 27
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000012790 adhesive layer Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 230000009467 reduction Effects 0.000 description 5
- 239000002912 waste gas Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000030279 gene silencing Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000219289 Silene Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
A kind of mute exhaust pipe, it is related to automobile exhaust system parts technical field, outer housing including tubular, it further include the inner housing with outer housing coaxial arrangement, it is equipped between the outer housing and the inner housing from inner housing front end extension to the back-end and circumferentially uniformly distributed vibration damping ridge, the interior shell surface is equipped with the through-hole of cylindrical-array.By the mute exhaust pipe, it can be absorbed in lesser volume, reduce noise；The normal operation of heat-extraction system is not influenced simultaneously；It can mitigate simultaneously from the vibrating noise under exhaust gas pressure effect.The utility model has the advantages that structure is simple, volume compact, convenient for production, noise-and-vibration-reduction effect is good, does not influence exhaust system normal work.
Description
Technical field
The utility model relates to automobile exhaust system parts technical field more particularly to a kind of mute exhaust pipes.
Background technique
With the development of economic level, popularity rate of the automobile in China is increasingly improved, friendship caused by the automobile quantity increased
Logical noise problem has become a major problem of people.When automobile is in the operating status of middle low speed especially in city, at this time
The dominant noise source of automobile is exactly vehicle exhaust system.Pressure-air passes through exhaust when its noise source is automobile exhaust on the one hand
Noise when system；On the other hand the vibration noise generated under engine luggine, pressure-air impact from exhaust system.
Especially in the exhaust outlet section of exhaust system end, because it is suspension connection between vehicle body, Oscillation Amplitude phase is earlier above
End is bigger, and noise is also bigger.It is generally reduced in the prior art by the reflection tube of connect multiple vibration damping chambers or different length
Vibration, structure is complicated for such exhaust muffling device, and manufacturing cost is high, also will affect the overall architecture layout of vehicle.
A kind of automobile exhaust silencing means as described in the Chinese utility model patent of Publication No. CN205025534U,
Sound wave is absorbed by the way that irony layer, silencing cotton layer and aluminium alloy layer are arranged in tube wall.Being arranged in tube wall simultaneously multiple has
The acoustical panel of bloop reduces noise to friction, the obstruction of the impact sound wave of pressure-air by it.This technical solution solves
Silene system excessive problem, but in the presence of can not eliminate, reduce noise caused by itself vibrating, the acoustical panel of multilayer causes
Exhaust velocity slows down the problems such as exhaust back pressure increase influences engine performance in exhaust system.
Utility model content
The purpose of this utility model is to provide a kind of mute exhaust pipes can be lesser by the mute exhaust pipe
It absorbed in volume, reduce noise；The normal operation of heat-extraction system is not influenced simultaneously；It can mitigate simultaneously and be acted on from exhaust gas pressure
Under vibrating noise.
To realize purpose of utility model, the utility model is adopted the technical scheme that
A kind of mute exhaust pipe, the outer housing including tubular further include the inner housing with outer housing coaxial arrangement, institute
It states and is equipped between outer housing and the inner housing from inner housing front end extension to the back-end and circumferentially uniformly distributed vibration damping ridge, it is described interior
Surface of shell is equipped with the through-hole of cylindrical-array.
Portion can be sent into the cavity between the outer housing and inner housing, be formed by the through-hole as a result,
The interaction of vibration damping chamber, vibration damping chamber air and exhaust gas can consume the kinetic energy of exhaust gas, namely reduce the energy of vibration noise,
To achieve the effect that noise reduction.The vibration damping ridge is flexible structure simultaneously, establishes the flexible of the inside and outside shell by it and connects
It connects, the vibration that inner housing pressure-bearing when exhaust gas passes through generates also is converted by the vibration damping ridge by kinetic energy flexible-elastic potential energy
It absorbs, reduces the vibration of itself to be further reduced noise.
As the preferred of the utility model, the air dam for the taper being equipped in the inner housing, the air dam includes cone
The bracket of body, the connection cone and inner housing, the cone axis are overlapped with the inner casing body axis and are directed toward the inner casing
The circular cone bottom surface circular diameter of body front end, the air dam is less than the inner housing diameter.
The cone can use up exhaust gas more by noise reduction between through-hole guides outer housing and inner housing as a result,.Simultaneously
Its bottom surface circular diameter is less than inner housing diameter and allows to take into account normal exhaust velocity demand.
As the preferred of the utility model, the cone is hollow cone.
Thus, it is possible to mitigate the weight of exhaust pipe, difficulty of processing is reduced.
As the preferred of the utility model, the vibration damping ridge include porous layer and be set to the porous layer and it is described outside, it is interior
The adhesive layer of shell connection.
The irregular cavity that the porous layer can have by it as a result, quickly absorbs the energy of sound wave and vibration, and
In the unit volume provided by porous layer bigger noise reduction area so as to further simplify the exhaust pipe volume and
Weight.Adhesive layer is the inorganic high-temperature resistants glue such as silicates, aluminum sulfate salt, phosphoric salt class, so that the vibration damping ridge and outer
Shell, being connected under the action of high-temp waste gas for inner housing can keep stablizing effectively for a long time, while other opposite connections
Mode is processed more convenient.
As the preferred of the utility model, the outer housing includes the irony layer of tubular and is covered on the inside of the irony layer
Acoustical cotton layer.
The irony layer provides high-intensitive support for the exhaust pipe as a result, and the acoustical cotton layer is as the vibration damping
The vibration damping of ridge supplements, and absorbs the noise for being directed toward outer housing and vibration.
As the preferred of the utility model, the through-hole two sides are equipped with diversion division.
The diversion division can standardize the flow direction of the exhaust gas flowed out from the through-hole as a result, avoid possibility between two strands of exhaust gas
Mutual impact generate additional noise.
As the preferred of the utility model, the diversion division includes the first flow deflector on the outside of the inner housing, institute
Stating the first flow deflector has the first opening for being directed toward the inner housing rear end.
Exhaust gas is guided by the first opening and is flowed between outer housing and inner housing by first flow deflector as a result, and is flowed
To noise identical as waste gas flow direction in exhaust system, that reduction exhaust gas deflecting generates.
As the preferred of the utility model, the diversion division includes the second flow deflector on the inside of the inner housing, institute
Stating the second flow deflector has the second opening for being directed toward the inner housing front end.
Exhaust gas is guided by the second opening and is flowed between outer housing and inner housing by second flow deflector as a result, and is flowed
To noise identical as waste gas flow direction in exhaust system, that reduction exhaust gas deflecting generates.
As the preferred of the utility model, the cone surface is equipped with reflecting part.
The reflecting part passes through the exhaust gas of cone surface by certain obstruction, to be biased in inner housing as a result,
Outflow in the through-hole of wall.
As the preferred of the utility model, the reflecting part is the cambered surface for being raised in the cone surface.
Exhaust gas is when being biased to because additional noise will not occur for the streamlined effect of cambered surface as a result,.
The utility model is simple with structure, volume compact, convenient for production, noise-and-vibration-reduction effect is good, does not influence exhaust system
The advantages of system works normally.
Detailed description of the invention
Fig. 1 is the schematic cross-section of the utility model；
Fig. 2 is enlarged diagram at the diversion division of the utility model；
Fig. 3 is schematic cross-section at the vibration damping ridge of the utility model；
Items are respectively as follows: 1 outer housing in figure, 11 irony layers, 12 acoustical cotton layers, 2 inner housings, 21 through-holes, 22 diversion divisions,
221 first flow deflectors, 222 first openings, 223 second flow deflectors, 224 second openings, 3 vibration damping ridges, 31 porous layers, 32 gluings
Layer, 4 air dams, 41 cones, 411 reflecting parts, 42 brackets.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing:
A kind of mute exhaust pipe as shown in Figure 1, 2, 3, the outer housing 1 including tubular further include being coaxially disposed with outer housing 1
Inner housing 2, be equipped with and extend to the back-end from 2 front end of inner housing and circumferentially uniformly distributed vibration damping ridge 3 between outer housing 1 and inner housing 2, it is interior
2 surface of shell is equipped with the through-hole 21 of cylindrical-array.
In the present embodiment, the air dam 4 for the taper being equipped in inner housing 2, air dam 4 includes cone 41, connection cone 41
With the bracket 42 of inner housing 2,41 axis of cone is overlapped with 2 axis of inner housing and is directed toward 2 front end of inner housing, the circular cone of air dam 4
Bottom surface circular diameter is less than 2 diameter of inner housing.
In the present embodiment, cone 41 is the hollow cone that sheet metal is welded into.
In the present embodiment, vibration damping ridge 3 include porous layer 31 and be bonded in porous layer 31 with outside, the gluing that connect of inner housing 2
Layer 32.
In the present embodiment, outer housing 1 includes that the irony layer 11 of tubular is covered in the acoustical cotton of 11 inside of irony layer with bonding
Layer 12.
In the present embodiment, 21 two sides of through-hole are welded with diversion division 22.
In the present embodiment, diversion division 22 includes the first flow deflector 221 positioned at 2 outside of inner housing, the first flow deflector 221 tool
There is the first opening 222 for being directed toward 2 rear end of inner housing.
In the present embodiment, diversion division 22 includes the second flow deflector 223 positioned at 2 inside of inner housing, the second flow deflector 223 tool
There is the second opening 224 for being directed toward 2 front end of inner housing.
In the present embodiment, 41 surface of cone has reflecting part 411.
In the present embodiment, reflecting part 411 is by stamped bumps in the cambered surface on 41 surface of cone.
Above embodiments are only described preferred embodiments of the present invention, not to the structure of the utility model
Think and range is defined, without departing from the design concept of the present utility model, ordinary people in the field is practical new to this
The all variations and modifications that the technical solution of type is made each fall within the protection scope of the utility model, the utility model request
The technology contents of protection, are all described in the claims.
Claims (10)
1. a kind of mute exhaust pipe, the outer housing (1) including tubular, which is characterized in that further include coaxial with the outer housing (1)
The inner housing (2) of setting is equipped with from the inner housing (2) front end between the outer housing (1) and the inner housing (2) and prolongs to the back-end
It stretches and circumferentially uniformly distributed vibration damping ridge (3), inner housing (2) surface is equipped with the through-hole (21) of cylindrical-array.
2. a kind of mute exhaust pipe according to claim 1, which is characterized in that the taper being equipped in the inner housing (2)
Air dam (4), the air dam (4) includes the bracket (42) of cone (41), the connection cone (41) and inner housing (2),
Cone (41) axis is overlapped with the inner housing (2) axis and is directed toward the inner housing (2) front end, the air dam (4)
Circular cone bottom surface circular diameter be less than the inner housing (2) diameter.
3. a kind of mute exhaust pipe according to claim 2, which is characterized in that the cone (41) is hollow cone.
4. a kind of mute exhaust pipe according to claim 1, which is characterized in that the vibration damping ridge (3) includes porous layer
(31) and set on the porous layer (31) adhesive layer (32) being connect with the outer, inner housing (2).
5. a kind of mute exhaust pipe according to claim 1, which is characterized in that the outer housing (1) includes the iron of tubular
Matter layer (11) and the acoustical cotton layer (12) being covered on the inside of the irony layer (11).
6. a kind of mute exhaust pipe according to claim 1, which is characterized in that through-hole (21) two sides are equipped with diversion division
(22).
7. a kind of mute exhaust pipe according to claim 6, which is characterized in that the diversion division (22) includes set on described
The first flow deflector (221) on the outside of inner housing (2), first flow deflector (221), which has, is directed toward inner housing (2) rear end
First opening (222).
8. a kind of mute exhaust pipe according to claim 7, which is characterized in that the diversion division (22) includes set on described
The second flow deflector (223) on the inside of inner housing (2), second flow deflector (223), which has, is directed toward inner housing (2) front end
Second opening (224).
9. a kind of mute exhaust pipe according to claim 2, which is characterized in that cone (41) surface is equipped with reflecting part
(411).
10. a kind of mute exhaust pipe according to claim 9, which is characterized in that the reflecting part (411) is is raised in
State the cambered surface on cone (41) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821172209.6U CN208702508U (en) | 2018-07-24 | 2018-07-24 | A kind of mute exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821172209.6U CN208702508U (en) | 2018-07-24 | 2018-07-24 | A kind of mute exhaust pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208702508U true CN208702508U (en) | 2019-04-05 |
Family
ID=65939670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821172209.6U Expired - Fee Related CN208702508U (en) | 2018-07-24 | 2018-07-24 | A kind of mute exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208702508U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412054A (en) * | 2020-05-25 | 2020-07-14 | 湖州新兴汽车部件有限公司 | High-efficient water guide's blast pipe |
-
2018
- 2018-07-24 CN CN201821172209.6U patent/CN208702508U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412054A (en) * | 2020-05-25 | 2020-07-14 | 湖州新兴汽车部件有限公司 | High-efficient water guide's blast pipe |
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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: 20190405 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |