CN204175372U - The novel special exhaust silencer except high-frequency noise - Google Patents
The novel special exhaust silencer except high-frequency noise Download PDFInfo
- Publication number
- CN204175372U CN204175372U CN201420585267.7U CN201420585267U CN204175372U CN 204175372 U CN204175372 U CN 204175372U CN 201420585267 U CN201420585267 U CN 201420585267U CN 204175372 U CN204175372 U CN 204175372U
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- CN
- China
- Prior art keywords
- chamber
- diffusing tube
- anger
- exhaust silencer
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of novel special exhaust silencer except high-frequency noise, it is characterized in that, the internal layout of cylindrical shell is the first chamber, the second chamber and the 3rd chamber by front dividing plate and rear bulkhead, in the inner transverse in the first chamber, air inlet diffusing tube is installed, in the inner transverse in the 3rd chamber, diffusing tube of giving vent to anger is installed, be respectively equipped with ventilation net at the outer surface of air inlet diffusing tube and diffusing tube of giving vent to anger, two intervalves are arranged between front dividing plate and rear bulkhead, and the first chamber and the 3rd chamber are connected.By above setting, the utility model maintains the effective advantage of resistance exhaust silencer centering, low frequency silencing noise, and air-flow is by repeatedly to turn to and repeatedly vent, to the noise elimination of high frequency, obtains good effect in actual entrucking uses.
Description
Technical field
The utility model relates to a kind of engine exhaust muffler, is a kind of novel special exhaust silencer except high-frequency noise specifically.
Background technique
At present, existing engine exhaust muffler 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, some sound wave goes back to sound source reflects, and not by the outlet of silencing apparatus, thus reach the object of noise elimination.This resistance exhaust silencer centering, low-frequency silencing noise effect are better.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 novel special exhaust silencer except high-frequency noise.
To achieve these goals, the internal layout of cylindrical shell is the first chamber, the second chamber and the 3rd chamber by front dividing plate of the present utility model and rear bulkhead, in the inner transverse in the first chamber, air inlet diffusing tube is installed, one end of described air inlet diffusing tube is closed, in the inner transverse in the 3rd chamber, diffusing tube of giving vent to anger is installed, one end of described diffusing tube of giving vent to anger is closed, ventilation net is respectively equipped with at the outer surface of air inlet diffusing tube and diffusing tube of giving vent to anger, two intervalves are arranged between front dividing plate and rear bulkhead, and the first chamber and the 3rd chamber are connected.
By above setting, the utility model maintains the effective advantage of resistance exhaust silencer centering, low frequency silencing noise, and air-flow is by repeatedly to turn to and repeatedly vent, to the noise elimination of high frequency, obtains good effect in actual entrucking uses.
Accompanying drawing explanation
Now by reference to the accompanying drawings the utility model is described further.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
In figure: 1, front dividing plate, 2, rear bulkhead, 3, cylindrical shell, the 4, first chamber, the 5, second chamber, the 6, the 3rd chamber, 7, air inlet diffusing tube, 8, diffusing tube of giving vent to anger, 9, intervalve.
Embodiment
As shown in Figure 1, 2, the internal layout of cylindrical shell 3 is the first chamber 5, chamber 4, second and the 3rd chamber 6 by front dividing plate 1 of the present utility model and rear bulkhead 2, in the inner transverse in the first chamber 4, air inlet diffusing tube 7 is installed, one end of described air inlet diffusing tube 7 is closed, in the inner transverse in the 3rd chamber 6, diffusing tube 8 of giving vent to anger is installed, one end of described diffusing tube 8 of giving vent to anger is closed, ventilation net is respectively equipped with at the outer surface of air inlet diffusing tube 7 and diffusing tube 8 of giving vent to anger, two intervalves 9 are arranged between front dividing plate 1 and rear bulkhead 2, and the first chamber 4 and the 3rd chamber 6 are connected.
By above setting, engine exhaust pipe noise enters the first chamber 4 by the ventilation net on air inlet diffusing tube 7 outer surface, realizes one-level expansion, eliminates part audio-frequency noise.Noise directly enters the 3rd chamber 6 through intervalve 9 again, realize second level expansion, it is inner that the ventilation net on the outer surface through giving vent to anger diffusing tube 8 enters diffusing tube 8 of giving vent to anger, under the vibration friction of the ventilation net on diffusing tube 8 of giving vent to anger, realize third level expansion, eliminate part high-frequency noise again.
Claims (1)
1. the novel special exhaust silencer except high-frequency noise, it is characterized in that: the internal layout of cylindrical shell is the first chamber, the second chamber and the 3rd chamber by front dividing plate and rear bulkhead, in the inner transverse in the first chamber, air inlet diffusing tube is installed, one end of described air inlet diffusing tube is closed, in the inner transverse in the 3rd chamber, diffusing tube of giving vent to anger is installed, one end of described diffusing tube of giving vent to anger is closed, ventilation net is respectively equipped with at the outer surface of air inlet diffusing tube and diffusing tube of giving vent to anger, two intervalves are arranged between front dividing plate and rear bulkhead, and the first chamber and the 3rd chamber are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585267.7U CN204175372U (en) | 2014-10-11 | 2014-10-11 | The novel special exhaust silencer except high-frequency noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585267.7U CN204175372U (en) | 2014-10-11 | 2014-10-11 | The novel special exhaust silencer except high-frequency noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175372U true CN204175372U (en) | 2015-02-25 |
Family
ID=52564189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420585267.7U Expired - Fee Related CN204175372U (en) | 2014-10-11 | 2014-10-11 | The novel special exhaust silencer except high-frequency noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175372U (en) |
-
2014
- 2014-10-11 CN CN201420585267.7U patent/CN204175372U/en not_active Expired - Fee Related
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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: 20150225 Termination date: 20171011 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |