CN104329139A - Silencer of motorcycle exhausting system - Google Patents
Silencer of motorcycle exhausting system Download PDFInfo
- Publication number
- CN104329139A CN104329139A CN201410574438.0A CN201410574438A CN104329139A CN 104329139 A CN104329139 A CN 104329139A CN 201410574438 A CN201410574438 A CN 201410574438A CN 104329139 A CN104329139 A CN 104329139A
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- CN
- China
- Prior art keywords
- pipe
- tube
- silencer
- motorcycle
- air inlet
- 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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Abstract
The invention belongs to the technical field of airflow silencers combined with sound absorption materials to use. A silencer of a motorcycle exhausting system comprises a tapered silencer shell, a silencing pipe arranged in the shell, and an air inlet pipe arranged outside the shell, wherein a supporting pipe with a hole is arranged in an inner cavity of the silencer shell; a silencing material is injected between the supporting pipe and the silencer shell; an air inlet end of the silencer shell is provided with a cylindrical connection pipe in a penetrating manner; an air inlet of the connection pipe is connected with the air inlet pipe; an air outlet of the connection pipe is connected with the silencing pipe; the connection pipe forms a cone at the part close to the air outlet; air holes are formed in the peripheral wall of the silencing pipe; the air inlet pipe is a double-layered air pipe composed of an outer-layer pipe and an inner-layer pipe; a heat insulation layer is arranged between the outer-layer pipe and the inner-layer pipe. The silencer of the motorcycle exhausting system can be used for silencing middle-frequency and low-frequency noises and can be used for carrying out heat insulation and cooling on the air inlet pipe.
Description
Technical field
The invention belongs to the silencer for gas flow technical field used in conjunction with sound-absorbing material.
Background technique
The main structure of existing noise eliminator of motorcycle comprises suction tude, suppressor case, hush tube and sound absorbing material, hush tube to be built in suppressor case and to be connected with suction tude, outside hush tube, in suppressor case, be provided with bearing reticular tube, between bearing reticular tube and suppressor case, fill sound absorbing material.
In prior art, noise eliminator of motorcycle mainly adopts straight-tube structure, namely hush tube and suppressor case are straight tube, its noise-cancelling theory belongs to dissipative muffler, utilize the sound absorption of muffler material or sound absorption structure, the noise of air-flow is propagated in muffler material, dissipates because acoustic energy is converted into heat energy by friction, makes to decay along the noise propagated in suppressor case with distance.Its shortcoming is: 1. this kind of dissipative muffler has good soundproof effect to high frequency noise, and centering low frequency noise is poor to low frequency soundproof effect.2. the usual crooked radian of suction tude is less, and waste gas is by very large noise occurring during suction tude, and in addition, suction tude is generally mono-layer tube, and high temperature, high pressure exhaust gas can make suction tude body temperature raise fast, affect the heat dispersion of motorcycle.
Summary of the invention
The invention is intended to provide one to eliminate the noise by centering low frequency noise, and the exhaust muffler for motorcycle of heat insulation and heat control can be carried out suction tude.
Object of the present invention can be reached by following measures: exhaust muffler for motorcycle, comprise the suppressor case of taper, the hush tube that this housing is built-in and with the suction tude outside housing, described suppressor case inner chamber is provided with support tube with holes, is filled with muffler material between support tube and suppressor case; Suppressor case inlet end is equipped with cylindric connecting tube, and the suction port of connecting tube is connected with suction tude, and the air outlet of connecting tube is connected with hush tube, and this connecting tube forms cone cylinder at the position near air outlet, and the perisporium of hush tube has pore; The double-deck tracheae that described suction tude is made up of external pipe and inner tube, leaves thermal-protective coating between external pipe and inner tube.
Technique scheme difference with the prior art is: arrange connecting tube at the inlet end of suppressor case, connect suction tude to hush tube, waste gas along with noise enters in hush tube by suction tude, due to the centrum shape that connecting tube diminishes gradually at the position Formation cross-section near air outlet, noise is because the unexpected change of pipeline section, cause impedance phenomenon, sound wave produce reflection or interference phenomenon, thus reduce, mid-frequency noise; The waste gas sprayed from the pore of hush tube enters in suppressor case, and the adjoint high frequency noise of waste gas is absorbed by muffler material, and such structure absorbs the noise of different frequency serially; In addition, adopt the suction tude that double-deck tracheae is made, the air heat-insulation layer between inner tube and external pipe can carry out heat insulation and heat control to high-temp waste gas.The present invention can have stronger attenuation to the noise of different frequency, good muffling effect.
Further, described suction tude at least arranges a curved part, and the camber of curved part is less than or equal to 90 °, and waste gas, through the curved part of suction tude, can reduce the striking velocity of waste gas, also utilizes the principle of acoustic reflection to reduce noise in addition.
Further, the cross section of described suppressor case is polygonal, can increase the surface of contact of noise and sound absorbing material, strengthens noise alleviation effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of exhaust muffler for motorcycle embodiment of the present invention;
Fig. 2 is the left view of Fig. 1 middle shell;
Fig. 3 is the sectional structure schematic diagram along A-A line in Fig. 1 suction tude;
Fig. 4 is the enclosure interior sectional view of exhaust muffler for motorcycle of the present invention.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
The reference character of Fig. 1 ~ Fig. 4 comprises: 1-housing, 2-suction tude, 21-external pipe, 22-inner tube 22,3-connecting tube, 4-bore cylinder, 5-hush tube, 51-pore, 6-support tube, 7-glass fibre.
Exhaust muffler for motorcycle, comprises the suppressor case 1 of taper, and this housing 1 from left to right diameter reduces gradually, and the cross section of housing 1 is the triangle of rounding off.Housing 1 left end is provided with suction tude 2 by otic placode, with curved part in this suction tude 2, the camber of this curved part is less than or equal to 90 °, the double-deck tracheae that suction tude 2 is made up of external pipe 21 and inner tube 22, leaves air heat-insulation layer between external pipe 21 and inner tube 22.
Housing 1 left end has penetrated connecting tube 3, and this connecting tube 3 is integrally made up of the cone cylinder 4 of left end and the cylinder of right-hand member, and the suction port on cylinder is connected with suction tude 2, and the air outlet on cone cylinder 4 is inserted and is provided with hush tube 5.This hush tube 5 right-hand member seals, around being evenly equipped with pore 51 on the perisporium of hush tube 5.
Be provided with support tube 6 in hush tube 5 periphery, suppressor case 1, the tube wall of this support tube 6 has bloop, is filled with glass fibre 7 between support tube 6 and suppressor case 1.
above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification etc. record the content that may be used for explaining claim.
Claims (4)
1. exhaust muffler for motorcycle, comprise the suppressor case of taper, the hush tube that this housing is built-in and with the suction tude outside housing, it is characterized in that: described suppressor case inner chamber is provided with support tube with holes, is filled with muffler material between support tube and suppressor case; Suppressor case inlet end is equipped with cylindric connecting tube, and the suction port of connecting tube is connected with suction tude, and the air outlet of connecting tube is connected with hush tube, and this connecting tube forms vertebra cylinder at the position near air outlet, and the perisporium of hush tube has pore; The double-deck tracheae that described suction tude is made up of external pipe and inner tube, leaves thermal-protective coating between external pipe and inner tube.
2. exhaust muffler for motorcycle according to claim 1, is characterized in that: described suction tude at least arranges a curved part, and the camber of curved part is less than or equal to 90 °.
3. exhaust muffler for motorcycle according to claim 1, is characterized in that: the cross section of described suppressor case is polygonal.
4. exhaust muffler for motorcycle according to claim 1, is characterized in that: described quieter material is glass fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410574438.0A CN104329139A (en) | 2014-10-24 | 2014-10-24 | Silencer of motorcycle exhausting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410574438.0A CN104329139A (en) | 2014-10-24 | 2014-10-24 | Silencer of motorcycle exhausting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104329139A true CN104329139A (en) | 2015-02-04 |
Family
ID=52403931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410574438.0A Pending CN104329139A (en) | 2014-10-24 | 2014-10-24 | Silencer of motorcycle exhausting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104329139A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218255A (en) * | 2017-07-31 | 2017-09-29 | 合肥上量机械科技有限公司 | A kind of blower fan complex deafener |
| CN109441593A (en) * | 2018-11-12 | 2019-03-08 | 张宇健 | A kind of silicon carbide muffler |
| CN113482757A (en) * | 2021-08-26 | 2021-10-08 | 浙江青鸟机械有限公司 | Multi-loop silencer on motorcycle |
-
2014
- 2014-10-24 CN CN201410574438.0A patent/CN104329139A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218255A (en) * | 2017-07-31 | 2017-09-29 | 合肥上量机械科技有限公司 | A kind of blower fan complex deafener |
| CN109441593A (en) * | 2018-11-12 | 2019-03-08 | 张宇健 | A kind of silicon carbide muffler |
| CN113482757A (en) * | 2021-08-26 | 2021-10-08 | 浙江青鸟机械有限公司 | Multi-loop silencer on motorcycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150204 |
|
| WD01 | Invention patent application deemed withdrawn after publication |