CN202047891U - Gasoline exhaust muffler - Google Patents
Gasoline exhaust muffler Download PDFInfo
- Publication number
- CN202047891U CN202047891U CN2011201469920U CN201120146992U CN202047891U CN 202047891 U CN202047891 U CN 202047891U CN 2011201469920 U CN2011201469920 U CN 2011201469920U CN 201120146992 U CN201120146992 U CN 201120146992U CN 202047891 U CN202047891 U CN 202047891U
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- China
- Prior art keywords
- pipe
- housing
- anger
- giving vent
- chamber
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- 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 utility model discloses a gasoline exhaust muffler, which comprises a housing, a front outer baffle arranged at the front end of the housing and a rear outer baffle arranged at the rear end of the housing for closing the housing. Three inner bafflers are separately arranged inside the housing at intervals from front to back. The core space of the housing is divided into four chambers via the inner bafflers. A gas inlet inner tube is inserted at the front end of the housing and a gas outlet inner tube is inserted at the rear end of the housing. The gas inlet inner tube and the gas outlet inner tube are respectively provided with at least ten vent holes. Sound absorption layers are arranged on the walls of the front part of the gas inlet inner tube and the back part of the gas outlet inner tube. The gasoline exhaust muffler is characterized in that a trumpet-shaped rear bracket is fixed to the front end of the gas outlet inner tube. Water and sound waves are effectively absorbed by the gasoline exhaust muffler and then are discharged through the gas outlet inner tube. Noise is reduced by 2-4 dB under the rated rotation speed and the power loss is reduced by 0.5%. Meanwhile, the entire service life is prolonged and the exhaust sound is relatively soft.
Description
Technical field
The utility model relates to silencing apparatus, particularly relates to a kind of gasoline exhaust silencer.
Background technique
Along with China's rapid development of economy, automobile pollution sharply increases in some big city automobile quantity especially in swift and violent increase, and automobile noise has become the main because of rope of harm urban environment, and automobile noise accounts for 75% of ambient noise.Noise for restricting vehicle, country has formulated more and more stricter mandatory noise standard, automotive industrial policy also stipulate the qualified product of unauthenticated must not sale, import and use, therefore reducing automobile noise has become the important topic that each automobile production producer faces.And automobile exhaust system accounts for vehicle complete vehicle and distributes 36% of noise, usually than the high 10-15 decibel of other noise, is the main path that reduces automobile noise so reduce exhaust sound.Existing silencing apparatus all is to comprise housing and be positioned at preceding exterior siding and the rear outer baffle that described housing is sealed in the housing front-end and back-end, described enclosure interior is arranged at intervals with three internal baffles from front to back, described internal baffle is divided into four chambers with described housing inner chamber, described housing front end is inserted with pipe in the air inlet, described housing rear end is inserted with the interior pipe of giving vent to anger, and is provided with at least 10 air holes on the pipe in pipe and described the giving vent to anger in the described air inlet.Such silencing apparatus can play the effect of certain noise elimination, but noise further can not be reduced.In the patent that the applicant has applied for, be provided with absorbent treatment on the rear portion tube wall of pipe in giving vent to anger, absorbent treatment can effectively absorb sound wave, reduce noise, and make sound softer, through experimental test, noise has reduced the 1-2 decibel under rated speed, power loss has reduced by 0.3%.But, such gasoline exhaust silencer, owing to also have the influence of part moisture content and sound wave, sound is more sharp-pointed, shortens the life-span of silencing apparatus.
Summary of the invention
The utility model is finished in order to solve deficiency of the prior art, the purpose of this utility model provides and a kind ofly can effectively absorb moisture content and sound wave, and by pipe discharge in giving vent to anger, noise has reduced the 2-4 decibel under rated speed, power loss has reduced by 0.5%, increase bulk life time, the gasoline exhaust silencer that exhaust sound is softer.
A kind of gasoline exhaust silencer of the present utility model, comprise housing and the preceding exterior siding and the rear outer baffle that are positioned at housing front-end and back-end enclosing housing, described enclosure interior is arranged at intervals with three internal baffles from front to back, described internal baffle is divided into four chambers with described housing inner chamber, described housing front end is inserted with pipe in the air inlet, described housing rear end is inserted with the interior pipe of giving vent to anger, be provided with at least 10 air holes on the pipe in pipe and described the giving vent to anger in the described air inlet, anterior and the described rear portion tube wall of giving vent to anger interior pipe of pipe is provided with absorbent treatment in the described air inlet, and the pipe front end is fixed with trumpet-shaped back segment carriage in described the giving vent to anger.
A kind of gasoline exhaust silencer of the present utility model can also be:
The pipe front end is fixed loudspeaker opening exterior siding before described of horn-like back segment carriage in described trumpet-shaped back segment carriage and described the giving vent to anger by joint welding.
Described absorbent treatment is made by glass fibre.
Described absorbent treatment is fixed on to manage in the described air inlet in anterior and described the giving vent to anger by sleeve pipe and manages on the tube wall of rear portion, and shrink on the tube wall that is fixed on pipe in interior pipe of described air inlet and described the giving vent to anger described sleeve pipe front-end and back-end.
Described sleeve pipe is a steel pipe, and described sleeve pipe two ends are shunk the back and are fixed in the described air inlet on the pipe and the described interior pipe of giving vent to anger by the spot welding mode.
The baffle plate that is arranged in order from front to back is respectively first internal baffle, second internal baffle and the 3rd internal baffle, be equipped with first interpolation pipe on described first internal baffle and second internal baffle, the front-end and back-end of described first interpolation pipe lay respectively in first chamber and the 3rd chamber and pass in second chamber.
Be equipped with second interpolation pipe on described the 3rd internal baffle, the front-end and back-end of described second interpolation pipe lay respectively in the 3rd chamber and the 4th chamber.
A kind of gasoline exhaust silencer of the present utility model is fixed with trumpet-shaped back segment carriage owing to manage front end in described the giving vent to anger in terms of existing technologies.The advantage that has like this is: horn-like back segment carriage can effectively absorb moisture content and sound wave, reduce noise, and by discharging in the exhaust, increased the bulk life time of silencing apparatus, it is softer that sound also becomes, and reduces noise, through experimental test, noise has reduced the 2-4 decibel under rated speed, power loss has reduced by 0.5%.
Description of drawings
A kind of gasoline exhaust silencer of Fig. 1 the utility model embodiment cut-away view.
A kind of gasoline exhaust silencer of Fig. 2 the utility model embodiment private side view.
Fig. 3 the utility model a kind of gasoline exhaust silencer absorbent treatment and sleeve pipe schematic representation.
The figure number explanation
1 ... housing 2 ... preceding exterior siding 3 ... rear outer baffle 4 ... pipe in the air inlet
5 ... pipe 6 in giving vent to anger ... air hole 7 ... chamber 8 ... first internal baffle
9 ... second internal baffle 10 ... the 3rd internal baffle 11 ... first interpolation pipe 12 ... second interpolation pipe
13 ... absorbent treatment 14 ... trumpet-shaped back segment trustship 15 ... sleeve pipe
Embodiment
Below in conjunction with accompanying drawing Fig. 1 to Fig. 3 a kind of gasoline exhaust silencer of the present utility model is described in further detail.
A kind of gasoline exhaust silencer of the present utility model, please refer to Fig. 1 to Fig. 3, comprise housing 1 and the preceding exterior siding 2 and the rear outer baffle 3 that are positioned at housing 1 front-end and back-end enclosing housing 1, described housing 1 inside is arranged at intervals with three internal baffles from front to back, described internal baffle is divided into four chambers 7 with described housing 1 inner chamber, be respectively first chamber 7, second chamber 7, the 3rd chamber 7 and the 4th chamber 7 from front to back, these four chambers 7 also can be referred to as the anechoic chamber.Described housing 1 front end is inserted with pipe 4 in the air inlet, pipe 5 in described housing 1 rear end is inserted with and gives vent to anger, be provided with at least 10 air holes 6 on the pipe 5 in pipe 4 and described the giving vent to anger in the described air inlet, the effect of air hole 6 is sound wave to be drained into by air hole 6 carry out the noise reduction processing in each chamber 7, reduces the noise of motor.Pipe 4 anterior and described rear portion tube walls of giving vent to anger interior pipe 5 are provided with absorbent treatment in the described air inlet.Absorbent treatment can effectively absorb sound wave, reduces noise, and makes sound softer.And pipe 5 front ends are fixed with trumpet-shaped back segment carriage 14 in described the giving vent to anger, the advantage that has like this is: trumpet-shaped back segment carriage 14 can effectively absorb moisture content and sound wave, reduce noise, and, having increased the bulk life time of silencing apparatus by discharging in the exhaust, it is softer that sound also becomes, reduce noise, through experimental test, noise has reduced the 2-4 decibel under rated speed, and power loss has reduced by 0.5%.Further preferably described trumpet-shaped back segment carriage 14 is fixed the loudspeaker opening of trumpet-shaped back segment carriage 14 exterior siding 2 before described with described interior pipe 5 front ends of giving vent to anger by joint welding.Fixing so more firm, and the efficient of absorption moisture content and sound wave is higher.
Further preferably described absorbent treatment is made by glass fibre.By the absorbent treatment that glass fibre is made, acoustic attenuation performance is further strengthened.Further, described absorbent treatment is fixed on by sleeve pipe 15 and manages in the described air inlet on the 4 anterior and described interior pipe 5 rear portion tube walls of giving vent to anger, and shrink on the tube wall that is fixed on interior pipe 4 of described air inlet and the described interior pipe 5 of giving vent to anger described sleeve pipe 15 front-end and back-end.Being specially described sleeve pipe 15 is steel pipe, and described sleeve pipe 15 two ends are shunk the back and are fixed on pipe 4 and described interior the pipe on 5 of giving vent to anger in the described air inlet by the spot welding mode.Absorbent treatment is not easy to come off like this, also convenient processing.
A kind of gasoline exhaust silencer of the present utility model, please refer to Fig. 1 to Fig. 3, can also be that the baffle plate that is arranged in order from front to back is respectively first internal baffle 8, second internal baffle 9 and the 3rd internal baffle 10, be equipped with first interpolation pipe 11 on described first baffle plate 8 and second internal baffle 9, the front-end and back-end of described first interpolation pipe 11 lay respectively in first chamber 7 and in the 3rd chamber 7 and pass in second chamber 7.Further preferably, be equipped with second interpolation pipe 12 on described the 3rd internal baffle 10 simultaneously, the front-end and back-end of described second interpolation pipe 12 lay respectively in the 3rd chamber 7 and the 4th chamber 7.Like this, owing to the sound waves that enter the sound wave in first and second chambers 7 by air hole 6 on the pipe 4 in the air inlet and enter in the 3rd chamber 7 form expansion chamber in first interpolation pipe 11 and the 3rd chamber 7, and stronger reflection and the interference of generation when the expansion indoor propagation of second interpolation pipe 12 and 7 formation of the 4th chamber, two low-frequency noise wave length of sounds are long, than being easier to emission and interference taking place, thereby has reduced the acoustic energy of low-frequency noise effectively.Adopt the silencing apparatus of this spline structure,, in lower frequency section (50-200Hz), can effectively reduce petrolic noise 2-4 decibel through the experimental test data display.
Above-mentionedly only several specific embodiments in the utility model are illustrated; but can not be as protection domain of the present utility model; every equivalence variation of having done according to the design spirit in the utility model or modification or equal proportion are amplified or are dwindled etc., all should think to fall into protection domain of the present utility model.
Claims (7)
1. gasoline exhaust silencer, comprise housing and the preceding exterior siding and the rear outer baffle that are positioned at housing front-end and back-end enclosing housing, described enclosure interior is arranged at intervals with three internal baffles from front to back, described internal baffle is divided into four chambers with described housing inner chamber, described housing front end is inserted with pipe in the air inlet, described housing rear end is inserted with the interior pipe of giving vent to anger, be provided with at least 10 air holes on the pipe in pipe and described the giving vent to anger in the described air inlet, anterior and the described rear portion tube wall of giving vent to anger interior pipe of pipe is provided with absorbent treatment in the described air inlet, and it is characterized in that: the pipe front end is fixed with trumpet-shaped back segment carriage in described the giving vent to anger.
2. a kind of gasoline exhaust silencer according to claim 1 is characterized in that: the pipe front end is fixed loudspeaker opening exterior siding before described of horn-like back segment carriage in described trumpet-shaped back segment carriage and described the giving vent to anger by joint welding.
3. a kind of gasoline exhaust silencer according to claim 2, it is characterized in that: described absorbent treatment is made by glass fibre.
4. a kind of gasoline exhaust silencer according to claim 2, it is characterized in that: described absorbent treatment is fixed on to manage in the described air inlet in anterior and described the giving vent to anger by sleeve pipe and manages on the tube wall of rear portion, and shrink on the tube wall that is fixed on pipe in interior pipe of described air inlet and described the giving vent to anger described sleeve pipe front-end and back-end.
5. a kind of gasoline exhaust silencer according to claim 3 is characterized in that: described sleeve pipe is a steel pipe, and described sleeve pipe two ends are shunk the back and are fixed in the described air inlet on the pipe and the described interior pipe of giving vent to anger by the spot welding mode.
6. according to the described a kind of gasoline exhaust silencer of any claim of claim 1 to 5, it is characterized in that: the baffle plate that is arranged in order from front to back is respectively first internal baffle, second internal baffle and the 3rd internal baffle, be equipped with first interpolation pipe on described first internal baffle and second internal baffle, the front-end and back-end of described first interpolation pipe lay respectively in first chamber and the 3rd chamber and pass in second chamber.
7. a kind of gasoline exhaust silencer according to claim 6 is characterized in that: be equipped with second interpolation pipe on described the 3rd internal baffle, the front-end and back-end of described second interpolation pipe lay respectively in the 3rd chamber and the 4th chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201469920U CN202047891U (en) | 2011-05-10 | 2011-05-10 | Gasoline exhaust muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201469920U CN202047891U (en) | 2011-05-10 | 2011-05-10 | Gasoline exhaust muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047891U true CN202047891U (en) | 2011-11-23 |
Family
ID=44988202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201469920U Expired - Fee Related CN202047891U (en) | 2011-05-10 | 2011-05-10 | Gasoline exhaust muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202047891U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026281A (en) * | 2018-07-25 | 2018-12-18 | 武汉理工大学 | A kind of automobile-used exhaust silencer of motor |
| CN112665176A (en) * | 2020-12-03 | 2021-04-16 | 珠海格力电器股份有限公司 | Silencer for reducing noise of fresh air inlet of air conditioner |
-
2011
- 2011-05-10 CN CN2011201469920U patent/CN202047891U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026281A (en) * | 2018-07-25 | 2018-12-18 | 武汉理工大学 | A kind of automobile-used exhaust silencer of motor |
| CN112665176A (en) * | 2020-12-03 | 2021-04-16 | 珠海格力电器股份有限公司 | Silencer for reducing noise of fresh air inlet of air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20170510 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |