CN204175376U - A kind of low back pressure impedance complex exhaust silencer - Google Patents
A kind of low back pressure impedance complex exhaust silencer Download PDFInfo
- Publication number
- CN204175376U CN204175376U CN201420545965.4U CN201420545965U CN204175376U CN 204175376 U CN204175376 U CN 204175376U CN 201420545965 U CN201420545965 U CN 201420545965U CN 204175376 U CN204175376 U CN 204175376U
- Authority
- CN
- China
- Prior art keywords
- dividing plate
- diffusing tube
- intervalve
- partition
- end cap
- 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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- Exhaust Silencers (AREA)
Abstract
The utility model discloses a kind of low back pressure impedance complex exhaust silencer, it is characterized in that, end cap is occluding with respectively at the two ends of housing, web plate is respectively equipped with in the inner side of two end cap, sound-absorbing material is filled with between web plate and end cap, first dividing plate, second partition and the 3rd dividing plate are by the internal layout of housing, longitudinally diffusing tube of giving vent to anger is provided with in the outside of the first dividing plate, bottom between the first dividing plate and second partition is provided with two little intervalves side by side, top between second partition and the 3rd dividing plate is provided with large intervalve, air inlet diffusing tube is located at the outside of the 3rd dividing plate.By above setting, the utility model takes full advantage of the vibration friction noise elimination effect of diffusing tube of giving vent to anger, little intervalve, large intervalve and air inlet diffusing tube, improve the soundproof effect of silencing apparatus, the back pressure reducing silencing apparatus, in the silencing apparatus improved project of main engine factory, obtains good effect.
Description
Technical field
The utility model belongs to engine exhaust muffler field, particularly relates to a kind of low back pressure impedance complex exhaust silencer.
Background technique
At present, existing exhaust exhaust silencer 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, but the contradiction that this silencing apparatus exists at present is when using on heavy-duty car, because size is restricted, silencing apparatus diameter can not be too large, for obtaining larger divergence ratio, higher sound deadening capacity, outlet pipe and interpolation pipe diameter can not be too large, thus cause airspeed high, muffler back pressure is high, and cause silencing apparatus soundproof effect also poor because airspeed is high.
Model utility content
The purpose of this utility model is to provide a kind of low back pressure impedance composite exhaust silencer utilizing flared tube and perforated pipe to reduce back pressure.
To achieve these goals, the utility model is occluding with end cap respectively at the two ends of housing, web plate is respectively equipped with in the inner side of two end cap, sound-absorbing material is filled with between web plate and end cap, first dividing plate, second partition and the 3rd dividing plate are by the internal layout of housing, longitudinally diffusing tube of giving vent to anger is provided with in the outside of the first dividing plate, bottom between the first dividing plate and second partition is provided with two little intervalves side by side, top between second partition and the 3rd dividing plate is provided with large intervalve, air inlet diffusing tube is located at the outside of the 3rd dividing plate, described diffusing tube of giving vent to anger, one end of large intervalve and air inlet diffusing tube is closed, at described diffusing tube of giving vent to anger, little intervalve, the outer wall of large intervalve and air inlet diffusing tube is respectively equipped with multiple expanded bore.
By above setting, the utility model takes full advantage of the vibration friction noise elimination effect of diffusing tube of giving vent to anger, little intervalve, large intervalve and air inlet diffusing tube, improve the soundproof effect of silencing apparatus, the back pressure reducing silencing apparatus, in the silencing apparatus improved project of main engine factory, obtains good effect.
Accompanying drawing explanation
Now be described further this use is novel by reference to the accompanying drawings.
Fig. 1 is this use new structure schematic diagram.
Fig. 2 is A-A sectional view.
In figure 1, housing, 2, end cap, 3, web plate, 4, sound-absorbing material, the 5, first dividing plate, 6, second partition, the 7, the 3rd dividing plate, 8, diffusing tube of giving vent to anger, 9, little intervalve, 10, large intervalve, 11, air inlet diffusing tube, 12, expanded bore, the 13, first cavity, the 14, second cavity.
Embodiment
As Fig. 1, shown in 2, the utility model is occluding with end cap 2 respectively at the two ends of housing 1, web plate 3 is respectively equipped with in the inner side of two end cap 2, sound-absorbing material 4 is filled with between web plate 3 and end cap 2, first dividing plate 5, second partition 6 and the 3rd dividing plate 7 are by the internal layout of housing 1, longitudinally diffusing tube 8 of giving vent to anger is provided with in the outside of the first dividing plate 5, bottom between the first dividing plate 5 and second partition 6 is provided with two little intervalves 9 side by side, top between second partition 6 and the 3rd dividing plate 7 is provided with large intervalve 10, air inlet diffusing tube 11 is located at the outside of the 3rd dividing plate 7, described diffusing tube 8 of giving vent to anger, one end of large intervalve and air inlet diffusing tube 11 is closed, at described diffusing tube 8 of giving vent to anger, little intervalve 9, the outer wall of large intervalve 10 and air inlet diffusing tube 11 is respectively equipped with multiple expanded bore 12.
By above setting, the noise of discharging from motor enters the first cavity 13 of the present utility model through air inlet diffusing tube 11, the vibration friction of the expanded bore on gas diffusing tube 11 and sound absorption, realize one-level expansion, eliminate part high-frequency noise, noise enters the second cavity 14 by large intervalve 10 again, the vibration friction of the expanded bore on large intervalve 10 and sound absorption, realize secondary expansion, remanent noise enters by little intervalve 9 diffusing tube 8 of giving vent to anger again, little intervalve 9 and the vibration friction of expanded bore of giving vent to anger on diffusing tube 8 and sound absorption, three grades of expansions are realized to noise, finally by giving vent to anger, diffusing tube 8 is discharged.
Claims (1)
1. one kind low back pressure impedance complex exhaust silencer, it is characterized in that: be occluding with end cap respectively at the two ends of housing, web plate is respectively equipped with in the inner side of two end cap, sound-absorbing material is filled with between web plate and end cap, first dividing plate, second partition and the 3rd dividing plate are by the internal layout of housing, longitudinally diffusing tube of giving vent to anger is provided with in the outside of the first dividing plate, bottom between the first dividing plate and second partition is provided with two little intervalves side by side, top between second partition and the 3rd dividing plate is provided with large intervalve, air inlet diffusing tube is located at the outside of the 3rd dividing plate, described diffusing tube of giving vent to anger, one end of large intervalve and air inlet diffusing tube is closed, at described diffusing tube of giving vent to anger, little intervalve, the outer wall of large intervalve and air inlet diffusing tube is respectively equipped with multiple expanded bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420545965.4U CN204175376U (en) | 2014-09-22 | 2014-09-22 | A kind of low back pressure impedance complex exhaust silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420545965.4U CN204175376U (en) | 2014-09-22 | 2014-09-22 | A kind of low back pressure impedance complex exhaust silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175376U true CN204175376U (en) | 2015-02-25 |
Family
ID=52564193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420545965.4U Expired - Fee Related CN204175376U (en) | 2014-09-22 | 2014-09-22 | A kind of low back pressure impedance complex exhaust silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175376U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111492125A (en) * | 2017-12-19 | 2020-08-04 | 本田技研工业株式会社 | Muffler device |
-
2014
- 2014-09-22 CN CN201420545965.4U patent/CN204175376U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111492125A (en) * | 2017-12-19 | 2020-08-04 | 本田技研工业株式会社 | Muffler device |
| US11377991B2 (en) | 2017-12-19 | 2022-07-05 | Honda Motor Co., Ltd. | Muffler device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20170922 |