CN204175363U - A kind of square automobile exhaust gas Sound Attenuator - Google Patents
A kind of square automobile exhaust gas Sound Attenuator Download PDFInfo
- Publication number
- CN204175363U CN204175363U CN201420560538.3U CN201420560538U CN204175363U CN 204175363 U CN204175363 U CN 204175363U CN 201420560538 U CN201420560538 U CN 201420560538U CN 204175363 U CN204175363 U CN 204175363U
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- China
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- air inlet
- rear end
- end cover
- dividing plate
- rear bulkhead
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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 kind of square automobile exhaust gas Sound Attenuator, it is characterized in that, front cover and rear end cover is welded with respectively at the two ends of square casing, front dividing plate and rear bulkhead are by the internal layout of square casing, intermediate portion between front dividing plate and rear bulkhead is supported with catalyst converter, air inlet expanding duct is located at the upper side between front dividing plate and rear bulkhead, air inlet the rim of a bowl is located at the side, top of front cover, web plate is located at the inner side of rear end cover, between web plate and rear end cover, be filled with glass fibre, steam outlet pipe is located at the bottom of rear end cover.By above setting, the utility model have in motor, the effective advantage of low frequency silencing noise, also eliminate a part of exhaust sound while the exhaust back pressure of motor whole system is reduced, in actual entrucking uses, obtain good effect.
Description
Technical field
The utility model relates to a kind of motor silencer, is a kind of for reducing the exhaust noise silencing case of engine exhaust noise with the exhaust back pressure of reduction whole system specifically.
Background technique
At present, existing Exhuster of engine mainly adopts the resistance exhaust silencer structure of pipeline section expansion and cross-sectional constriction, utilize sound wave in the change of abrupt change of cross-section place due to acoustic reactance, be directed at a part of sound wave and go back to sound source reflects, thus reach the object of noise elimination.The low-frequency silencing noise of this resistance venting gas appliance centering has certain effect.And for high frequency noise, due to the perforation pipeline section good to high frequency noise soundproof effect of employing and the negligible amounts of perforated plate, and the inner resistive sound-absorbing material that layout is not good to high frequency noise acoustically effective, it is undesirable to the soundproof effect of high frequency noise.
Summary of the invention
The purpose of this utility model is to provide a kind of impedance composite exhaust noise silencing case that especially low-frequency range soundproof effect is good in whole frequency range.
To achieve these goals, the utility model is welded with front cover and rear end cover respectively at the two ends of square casing, front dividing plate and rear bulkhead are by the internal layout of square casing, intermediate portion between front dividing plate and rear bulkhead is supported with catalyst converter, air inlet expanding duct is located at the upper side between front dividing plate and rear bulkhead, air inlet the rim of a bowl is located at the side, top of front cover, described air inlet the rim of a bowl is connected with one end of air inlet expanding duct, the other end of described air inlet expanding duct is closed by rear bulkhead, web plate is located at the inner side of rear end cover, glass fibre is filled with between web plate and rear end cover, steam outlet pipe is located at the bottom of rear end cover.
By above setting, the utility model have in motor, the effective advantage of low frequency silencing noise, also eliminate a part of exhaust sound while the exhaust back pressure of motor whole system is reduced, in actual entrucking uses, obtain good effect.
Accompanying drawing explanation
Now by reference to the accompanying drawings the utility model is described further.
Fig. 1 is the utility model structural representation.
Fig. 2 is the A-A sectional view of Fig. 1.
In figure: 1, square casing, 2, front cover, 3, rear end cover, 4, front dividing plate, 5, rear bulkhead, 6, catalyst converter, 7, air inlet expanding duct, 8, air inlet the rim of a bowl, 9, web plate, 10, glass fibre, 11, steam outlet pipe.
Embodiment
As Fig. 1, shown in 2, the utility model is welded with front cover 2 and rear end cover 3 respectively at the two ends of square casing 1, front dividing plate 4 and rear bulkhead 5 are by the internal layout of square casing 1, intermediate portion between front dividing plate 4 and rear bulkhead 5 is supported with catalyst converter 6, air inlet expanding duct 7 is located at the upper side between front dividing plate 4 and rear bulkhead 5, air inlet the rim of a bowl 8 is located at the side, top of front cover 2, described air inlet the rim of a bowl 8 is connected with one end of air inlet expanding duct 7, the other end of described air inlet expanding duct 7 is closed by rear bulkhead 5, web plate 9 is located at the inner side of rear end cover 3, glass fibre 10 is filled with between web plate 9 and rear end cover 3, steam outlet pipe 11 is located at the bottom of rear end cover 3.By above setting, from iris action through air inlet the rim of a bowl 8, air inlet diffusing tube 7 and rear bulkhead 5 of the noise of motor, realize one-level expansion, eliminate the basic, normal, high audio-frequency noise of part, under the vibration friction of the transformation in noise direction simultaneously and the little vent on air inlet diffusing tube 7, eliminate part high-frequency noise.
Residual noise enters between rear bulkhead 5 and rear end cover 3 through catalyst converter 6, realize secondary expansion, eliminate the basic, normal, high audio-frequency noise of part, simultaneously because the friction of aperture on catalyst converter 6 is to the transformation in noise direction and vibration friction, eliminate part high-frequency noise, glass fibre 10 realizes eliminating part high-frequency noise, and noise is when steam outlet pipe 11 is discharged, due to the steering-effecting of noise, eliminate part high-frequency noise again.
Claims (1)
1. a square automobile exhaust gas Sound Attenuator, it is characterized in that: be welded with front cover and rear end cover respectively at the two ends of square casing, front dividing plate and rear bulkhead are by the internal layout of square casing, intermediate portion between front dividing plate and rear bulkhead is supported with catalyst converter, air inlet expanding duct is located at the upper side between front dividing plate and rear bulkhead, air inlet the rim of a bowl is located at the side, top of front cover, described air inlet the rim of a bowl is connected with one end of air inlet expanding duct, the other end of described air inlet expanding duct is closed by rear bulkhead, web plate is located at the inner side of rear end cover, glass fibre is filled with between web plate and rear end cover, steam outlet pipe is located at the bottom of rear end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560538.3U CN204175363U (en) | 2014-09-27 | 2014-09-27 | A kind of square automobile exhaust gas Sound Attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560538.3U CN204175363U (en) | 2014-09-27 | 2014-09-27 | A kind of square automobile exhaust gas Sound Attenuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175363U true CN204175363U (en) | 2015-02-25 |
Family
ID=52564180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420560538.3U Active CN204175363U (en) | 2014-09-27 | 2014-09-27 | A kind of square automobile exhaust gas Sound Attenuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175363U (en) |
-
2014
- 2014-09-27 CN CN201420560538.3U patent/CN204175363U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170413 Address after: 262200 Shandong City, Weifang Province Zhucheng Lishan Road, No. 11 Patentee after: Shandong aytek environmental Polytron Technologies Inc Address before: 262200 Shandong city of Weifang Province Zhucheng Longdu City Industrial Park Patentee before: Zhucheng Haidewei Machine Co., Ltd. |