CN2549183Y - Three chamber exhaust silencer of engine - Google Patents
Three chamber exhaust silencer of engine Download PDFInfo
- Publication number
- CN2549183Y CN2549183Y CN 01251738 CN01251738U CN2549183Y CN 2549183 Y CN2549183 Y CN 2549183Y CN 01251738 CN01251738 CN 01251738 CN 01251738 U CN01251738 U CN 01251738U CN 2549183 Y CN2549183 Y CN 2549183Y
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- CN
- China
- Prior art keywords
- pipe
- noise
- internal pipe
- fixed
- plate
- 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 three-chamber exhaust silencer of engine, which comprises a left internal pipe 1 and a right internal pipe 7 with air holes 10, a clapboard 4 and a penetration plate 6 which has an air hole 11 and is fixed in a casing 5. A tail pipe 9 is fixed at the exposed end of the right internal pipe 7; and the center of the penetration plate 6 is provided with a blocking plate which separates the left internal pipe 1 and the right internal pipe 7. The left internal pipe 1 of the first cavity is internally at least provided with a blocking plate 3. By changing the transmission direction of the sound wave, the utility model decreases the noise intensity in the full frequency range, thereby promising perfect silencing effect for the noise with low frequency, medium frequency and high frequency.
Description
(1) technical field
The utility model belongs to muffler for motor, particularly relates to a kind of motor three chamber exhaust silencers.
(2) background technique
At present, existing motor three chamber exhaust silencers mainly adopt the noise elimination structure of the cross-sectional expansion and the cross-sectional constriction of pipeline, utilize sound wave in the variation of abrupt change of cross-section place owing to acoustic impedance, and some sound wave reflects back to sound source, and the not outlet by silencing apparatus, thereby reach the purpose of noise elimination.The low-frequency noise noise elimination of this silencing apparatus centering effect is better.And for high frequency noise, the noise elimination effect is undesirable.
(3) summary of the invention
The purpose of this utility model is to provide a kind of effective motor three chamber exhaust silencers of eliminating the noise in whole frequency range.
The technical solution of the utility model is: motor three chamber exhaust silencers comprise that the perforated plate 6 that has pipe 1 and 7, dividing plate 4 in air hole 10 left and right and have air hole 11 is fixed in the frame 5, the middle body of perforated plate 6 forms closure plate pipe 1 and 7 in left and right is separated, at least be fixed with a closure plate 3 in the pipe 1 in the left side in first chamber, tail pipe 9 is fixed on right interior pipe last 7 and exposes the end.
The beneficial effects of the utility model are: the utility model is managed in 1 in the left side in first chamber has increased a closure plate 3 at least, takes to change the method for the direction of propagation of sound wave, has all reduced noise intensity in whole frequency range, so the noise elimination effect is better.The utility model has overcome the known technology silencing apparatus to the high frequency noise unfavorable defective of eliminating the noise, and no matter is low frequency, medium frequency and high frequency noise, and its noise elimination effect is all very desirable.
(4) description of drawings
Fig. 1 is motor three chamber exhaust silencer structural representations.
Fig. 2 is the M-M cross section sectional structure schematic representation of Fig. 1.
(5) embodiment
Embodiment: referring to Fig. 1, Fig. 2.In silencing apparatus shown in Figure 1, it by pipe 1, left end cap 2 in the left side that has air hole 10, be fixed on closure plate 3, dividing plate 4, frame 5 in 1 of pipe in the left side, have air hole 11 perforated plate 6, right in pipe 7, right end cap 8, tail pipe 9 form.Dividing plate 4 and perforated plate 6 are divided into three chambeies with silencing apparatus.Closure plate 3, dividing plate 4 are divided in the cross-sectional expansion in pipeline section A, the cross-sectional constriction pipeline section C in pipeline section B, the cross-sectional expansion with pipe 1 in the left side.Pipeline section D manages on 7 in right in the cross-sectional constriction.Therefore, the utility model has four interior pipeline sections and a perforated plate.The middle body of perforated plate 6 forms closure plate pipe 1 and 7 in left and right is separated.Pipe 1 left end cap 2 from frame penetrates in the left side, passes dividing plate 4, is fixed on perforated plate 6 middle bodies that have uniform air hole 11.Pipe 7 passes from right end cap 8 in right.At least be fixed with a closure plate 3 in the pipe 1 in the left side in first chamber, tail pipe 9 is fixed on the end of exposing of right interior pipe 7.Like this, pipe in the utility model left side, right in pipe and dividing plate, closure plate, perforated plate fixed connection, and be combined into an integral body by left end cap, right end cap and frame.The utility model can reach good effect by following process.
(1) imports the noise of muffler inlet into from waste pipe, by pipeline section A in the cross-sectional expansion, because silencing apparatus first chamber is imported in the obstruct of closure plate 3 into, import of the noise elimination effect of this part noise in first chamber into through pipeline section in the cross-sectional expansion, noise will be reduced.
(2) import the noise in first chamber into because the obstruct of dividing plate 4, import second chamber into by pipeline section C in pipeline section B and the cross-sectional expansion in the cross-sectional constriction, import the noise elimination effect of this part noise in second chamber through pipeline section in pipeline section in the cross-sectional constriction and the cross-sectional expansion into, noise will further be reduced.
(3) noise that imports second chamber into imports the 3rd chamber into by perforated plate 6, imports the noise elimination effect of this part noise in the 3rd chamber through perforated plate into, and noise will further be reduced.
(4) noise that imports the 3rd chamber into enters tail pipe 9 by pipeline section D in the cross-sectional constriction, reaches the silencing apparatus outlet then, reaches the noise elimination effect of this part noise of silencing apparatus outlet through pipeline section in cross-sectional constriction and tail pipe, and noise will further be reduced.
Import the noise elimination of the noise of muffler inlet through above-mentioned four noise elimination processes into from waste pipe, the noise that reaches the silencing apparatus outlet port will be reduced significantly.Know from Fig. 1, being evenly equipped with some air hole air feed on the left and right interior pipe in the utility model frame flows to out, in the left side in first chamber, be fixed with a closure plate at least in the pipe, take to change the method for the direction of propagation of sound wave, in whole frequency range, all reduced noise intensity, so all good to the noise elimination effect of low frequency, medium frequency and high frequency noise.
Claims (2)
1. motor three chamber exhaust silencers, comprise that the perforated plate 6 that has pipe 1 and 7, dividing plate 4 in air hole 10 left and right and have air hole 11 is fixed in the frame 5, the middle body of perforated plate 6 forms closure plate pipe 1 and 7 in left and right is separated, and it is characterized in that: be fixed with a closure plate 3 at least in the pipe 1 in the left side in first chamber.
2. silencing apparatus according to claim 1 is characterized in that: tail pipe 9 is fixed on the end of exposing of right interior pipe 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251738 CN2549183Y (en) | 2001-08-30 | 2001-08-30 | Three chamber exhaust silencer of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251738 CN2549183Y (en) | 2001-08-30 | 2001-08-30 | Three chamber exhaust silencer of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2549183Y true CN2549183Y (en) | 2003-05-07 |
Family
ID=33661591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01251738 Expired - Fee Related CN2549183Y (en) | 2001-08-30 | 2001-08-30 | Three chamber exhaust silencer of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2549183Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356660C (en) * | 2004-06-17 | 2007-12-19 | 重庆力帆实业（集团）有限公司 | Muffler for general gasoline generating set |
| CN101460714B (en) * | 2006-04-12 | 2011-06-08 | Ocv智识资本有限责任公司 | Long fiber thermoplastic composite muffler system |
| CN105402004A (en) * | 2015-12-18 | 2016-03-16 | 吉林大学 | Diesel engine silencer used for high-power agricultural machinery |
| CN106050491A (en) * | 2016-07-04 | 2016-10-26 | 南京航空航天大学 | Broadband multi-cavity resonance-type air intake muffler and working method thereof |
-
2001
- 2001-08-30 CN CN 01251738 patent/CN2549183Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356660C (en) * | 2004-06-17 | 2007-12-19 | 重庆力帆实业（集团）有限公司 | Muffler for general gasoline generating set |
| CN101460714B (en) * | 2006-04-12 | 2011-06-08 | Ocv智识资本有限责任公司 | Long fiber thermoplastic composite muffler system |
| CN105402004A (en) * | 2015-12-18 | 2016-03-16 | 吉林大学 | Diesel engine silencer used for high-power agricultural machinery |
| CN106050491A (en) * | 2016-07-04 | 2016-10-26 | 南京航空航天大学 | Broadband multi-cavity resonance-type air intake muffler and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |