CN107725147A - A kind of Novel silencing device - Google Patents
A kind of Novel silencing device Download PDFInfo
- Publication number
- CN107725147A CN107725147A CN201610661770.XA CN201610661770A CN107725147A CN 107725147 A CN107725147 A CN 107725147A CN 201610661770 A CN201610661770 A CN 201610661770A CN 107725147 A CN107725147 A CN 107725147A
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- China
- Prior art keywords
- chamber
- silencer
- insertion tube
- tube
- silencing device
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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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
A kind of Novel silencing device of the present invention, by the way that two identical silencers are in parallel, asbestos are added to separate inner chamber using microperforated panel between two silencers, add asbestos that inner chamber is separated into Liang Ge exhaust chamber using with microperforated panel inside silencer, exhaust noise is set to be hit back and forth in exhaust passage, asbestos layer can absorb partial noise, the insertion tube of silencer uses tapered pipeline, so as to reduce the exhaust resistance of silencer, the air-flow of two silencers converges discharge silencer after the second chamber in discharge duct.By emulating, testing, the noise reduction of silencer of the invention is better than traditional silencer, and the exhaust resistance of silencer reduces than conventional muffler.
Description
Technical field
The present invention relates to silencer, specifically a kind of Novel silencing device.
Background technology
At present, common silencer（Muffler）It is a kind of device for preventing sound transmission and allowing air-flow to pass through, is
Eliminate the important measures of air power noise.Conventional muffler be all by flange, inlet tube, cavity, insertion tube dividing plate and
Outlet is formed, and the exhaust outlet of flange and engine is connected, and inlet tube is connected with flange welding, and air-flow is entered by inlet tube
Cavity, sound are eliminated the noise in cavity, and air-flow excludes silencer by cavity from outlet.But with social development, to eliminating the noise
Amount requires more and more higher, practice have shown that, simple silencer has not often reached the requirement for transmitting loss and the pressure loss.
The content of the invention
In order to overcome the existing silencer pressure loss in current part excessive and transmit the problem of loss is too small, the present invention carries
For a kind of Novel silencing device of special construction, the silencing apparatus can make full use of limited space, and there is bigger transmission to damage
Become estranged the smaller pressure loss.
It is of the present invention solve the problems, such as used by technical scheme be：
A kind of Novel silencing device, including the silencer being made up of flange, inlet tube, insertion tube, dividing plate and outlet tube, with
Unlike prior art：
It is in parallel between the first silencer and the second silencer provided with square the first silencer and the second silencer；
First chamber and second chamber are separated into by perforated plate between first silencer and the second silencer, flange passes through air inlet
Mouth pipe connects with the air inlet insertion tube of first chamber, is connected between first chamber and second chamber by taper insertion tube；The
Two chambers are connected by gas outlet insertion tube with outlet tube.
The first chamber inner chamber is provided with mesh plate, and first chamber is separated into the first upper chamber and first by mesh plate
Lower chambers, flange are connected by insertion tube of the inlet tube respectively with the first upper chamber, the first lower chambers.
The second chamber inner chamber is provided with mesh plate, and second chamber is separated into the second upper chamber and second by mesh plate
Lower chambers, the first upper chamber, the first lower chambers are connected by taper insertion tube with the second upper chamber, the second lower chambers respectively, the
Two upper chamber, the second lower chambers are connected by gas outlet insertion tube with outlet tube respectively.
The air inlet insertion tube, gas outlet insertion tube are cone-type piercer pipe, and through hole, taper are uniformly laid with tube wall
Perforated pipe taper is 1: 8.
The taper insertion tube is the taper insertion tube of tape punching, and through hole, cone-type piercer pipe cone are uniformly laid with tube wall
Spend for 1: 8；Taper insertion tube connects first chamber and second chamber respectively.
The mesh plate surface is provided with asbestos layer, and through hole is uniformly laid with mesh plate, and its punching rate is 6%, and aperture is.
The perforation plate surface is provided with asbestos layer, is uniformly laid with through hole on perforated plate, its punching rate is 6%, and aperture is.
The intubating length of the air inlet insertion tube is the 1/2 of first chamber；The intubating length of gas outlet insertion tube is the
The 1/4 of two chambers.
The beneficial effects of the invention are as follows：
1. two identical square mufflers are in parallel, silencer is arranged on engine exhaust port, maximum in silencer
Cross sectional dimensions is no more than under conditions of the 1/4 of wavelength, can make full use of space, increase the sound deadening capacity of silencer, two cavitys
Shunting can reduce the flowing velocity of silencer internal gas, reduce the exhaust resistance of silencer,
2. the sound deadening capacity of square muffler is big compared with circular sound deadening capacity, the pressure loss is smaller,
3. insertion tube is taper, the exhaust resistance of silencer can be smaller, and asbestos layer is with the addition of inside silencer, can eliminated the noise
Certain noise is fallen in device internal consumption, makes the noise reduction of silencer more preferable.
Brief description of the drawings
Fig. 1 is the structural representation of the silencer of the embodiment of the present invention.
Fig. 2 be in Fig. 1 A-A to schematic diagram.
In figure：1. air inlet flange；2. inlet tube；3 first upper chamber；4. the first chamber air inlet insertion tube；5. first
Chamber gas outlet insertion tube；6. the second chamber air inlet insertion tube；7. the second upper chamber；8. the second chamber gas outlet insertion tube；9. outlet
Mouth pipe；10. the first lower chambers；11. mesh plate；12. perforated plate；13. the second lower chambers.
Embodiment
For the purpose and effect for describing the technology contents of the present invention in detail, being realized, below in conjunction with embodiment and match somebody with somebody
Accompanying drawing is closed to be explained.
Embodiment：
Reference picture 1-2, a kind of Novel silencing device, composed in parallel by 2 shapes, size identical square muffler, at two
Silencer is separated into by first chamber and second chamber, the surface of perforated plate 12 using the perforated plate 12 with micropore inside silencer
Provided with asbestos layer, through hole is uniformly laid with perforated plate, its punching rate is 6%, and aperture is；Greatly reduce the gas velocity of silencer
Degree, and exhaust noise is carried out repercussion inside silencer, noise reduction excludes after first chamber and second chamber silencer,
So as to increase the noise reduction of silencer.The sectional view of described silencer is made up of two square silencers（Such as Fig. 2 institutes
Show）.
First chamber inner chamber is provided with mesh plate 11, and first chamber is separated into the first upper chamber 3 and by mesh plate 11
One lower chambers 10, flange 1 are inserted by the first chamber air inlet of the inlet tube 2 respectively with the first upper chamber 3, the first lower chambers 10
Pipe 4 connects.
Second chamber inner chamber is provided with mesh plate 11, and second chamber is separated into the second upper chamber 7 and by mesh plate 11
Two lower chambers 13, the first upper chamber 3, the first lower chambers 10 pass through first chamber gas outlet insertion tube 5 and the second upper chamber respectively
7th, the second chamber air inlet insertion tube 6 of the second lower chambers 13 connects, and the second upper chamber 7, the second lower chambers 13 are respectively by going out
Gas port insertion tube 8 connects with outlet tube 9.
Above-mentioned inlet tube 2, first chamber gas outlet insertion tube 5, second chamber air inlet insertion tube 6, gas outlet insertion
Pipe 8, outlet tube 9 are cone-type piercer pipe, and through hole is uniformly laid with tube wall, and cone-type piercer pipe taper is 1: 8, is made by having
The perforated pipe 8 of taper enters muffler tail pipe discharge air.
The surface of mesh plate 11 is provided with asbestos layer, and through hole is uniformly laid with mesh plate 11, and its punching rate is 6%, and aperture is.
The intubating length of first chamber air inlet insertion tube 4 is respectively the first upper chamber 3, the 1/2 of the first lower chambers 10,
The intubating length of first chamber gas outlet insertion tube 5 is respectively the first upper chamber 3, the 1/4 of the first lower chambers 10,
The intubating length of second chamber air inlet insertion tube 6 is respectively the second upper chamber 7, the 1/2 of the second lower chambers 13；
The intubating length of second chamber gas outlet insertion tube 8 is respectively the second upper chamber 7, the 1/4 of the second lower chambers 13.
Described the first chamber of noise elimination inlet tube 4, the first chamber outlet 5, the inlet tube 6 of the second chamber, the outlet 8 of the second chamber
For perforated pipe, punching rate 5%, aperture is Φ 3.
The trend of arrow expression exhaust noise in Fig. 1, operation principle of the present invention are as follows：
（1）Silencer the first upper chamber 3 and the first cavity of resorption are entered by inlet tube 2 from the exhaust noise of engine exhaust port discharge
In room 10, enter the second upper chamber 7 and the second lower chambers 13, or the first upper chamber 3 and the first lower chambers by perforated plate 12
10 pass through the convection current of mesh plate 11, the second upper chamber 7 and the convection current of the second lower chambers 13.
（2）Because silencer internal wall surface is covered with asbestos layer, exhaust noise is during silencer inner impact by mesh plate
11 and the surface asbestos layer of perforated plate 12 largely absorb, so as to further reduce the decibel value of exhaust noise, make finally to arrange
The exhaust noise value gone out is greatly reduced.
（3）After reaching the second upper chamber 7 and the second lower chambers 13, by second chamber gas outlet insert port 8 in silencer
Realize and converge in exhaust outlet pipe 9, discharge air-flow and noise.
It was found from foregoing description, the present invention is by by two identical silencers and being unified into a silencer, two noise eliminations
The mesh plate with micropore is used to add asbestos to separate between device, using microperforated panel point between the chamber of silencer first and the second chamber
Every the insertion tube inside silencer uses tapered perforated pipe, disappears so as to reduce the exhaust resistance of silencer without influenceing
The noise reduction of sound device, noise are hit back and forth inside silencer, and silencer exhaust outlet is entered after the second chamber and is discharged, reaches and disappears
The noise reduction of sound device and the exhaust resistance for reducing engine.By emulation, silencer exhaust noise of the invention is than traditional noise elimination
Device noise reduction is more preferable, and exhaust resistance is smaller.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made, or the technical field in correlation is directly or indirectly applied, similarly include
In the scope of the claims of the present invention.
Claims (8)
1. a kind of Novel silencing device, including the silencer being made up of flange, inlet tube, insertion tube, dividing plate and outlet tube,
It is characterized in that：
It is in parallel between the first silencer and the second silencer provided with square the first silencer and the second silencer；
First chamber and second chamber are separated into by perforated plate between first silencer and the second silencer, flange passes through air inlet
Mouth pipe connects with the air inlet insertion tube of first chamber, is connected between first chamber and second chamber by taper insertion tube；The
Two chambers are connected by gas outlet insertion tube with outlet tube.
2. Novel silencing device according to claim 1, it is characterized in that：The first chamber inner chamber is provided with mesh plate, leads to
Cross mesh plate and first chamber be separated into the first upper chamber and the first lower chambers, flange by inlet tube respectively with the first epicoele
Room, the insertion tube connection of the first lower chambers.
3. Novel silencing device according to claim 1, it is characterized in that：The second chamber inner chamber is provided with mesh plate, leads to
Cross mesh plate and second chamber is separated into the second upper chamber and the second lower chambers, the first upper chamber, the first lower chambers pass through respectively
Taper insertion tube is connected with the second upper chamber, the second lower chambers, and the second upper chamber, the second lower chambers are inserted by gas outlet respectively
Pipe connects with outlet tube.
4. Novel silencing device according to claim 1, it is characterized in that：The air inlet insertion tube, gas outlet insertion tube
It is cone-type piercer pipe, through hole is uniformly laid with tube wall, cone-type piercer pipe taper is 1: 8.
5. Novel silencing device according to claim 1, it is characterized in that：The taper insertion tube is inserted for the taper of tape punching
Enter pipe, through hole is uniformly laid with tube wall, cone-type piercer pipe taper is 1: 8；Taper insertion tube connects first chamber and respectively
Two chambers.
6. the Novel silencing device according to Claims 2 or 3, it is characterized in that：The mesh plate surface is provided with asbestos layer,
Through hole is uniformly laid with mesh plate, its punching rate is 6%, and aperture is 3 mm.
7. Novel silencing device according to claim 1, it is characterized in that：The perforation plate surface is provided with asbestos layer, perforates
Through hole is uniformly laid with plate, its punching rate is 6%, aperture 4mm.
8. Novel silencing device according to claim 1, it is characterized in that：The intubating length of the air inlet insertion tube is the
The 1/2 of one chamber；The intubating length of gas outlet insertion tube is the 1/4 of second chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610661770.XA CN107725147A (en) | 2016-08-12 | 2016-08-12 | A kind of Novel silencing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610661770.XA CN107725147A (en) | 2016-08-12 | 2016-08-12 | A kind of Novel silencing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107725147A true CN107725147A (en) | 2018-02-23 |
Family
ID=61199924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610661770.XA Pending CN107725147A (en) | 2016-08-12 | 2016-08-12 | A kind of Novel silencing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107725147A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764204A (en) * | 2019-03-06 | 2019-05-17 | 西南石油大学 | A kind of natural gas vent sound deadener |
| CN114135364A (en) * | 2021-12-07 | 2022-03-04 | 杭叉集团股份有限公司 | Three-channel parallel double-resonant-cavity exhaust muffler for industrial vehicle |
-
2016
- 2016-08-12 CN CN201610661770.XA patent/CN107725147A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764204A (en) * | 2019-03-06 | 2019-05-17 | 西南石油大学 | A kind of natural gas vent sound deadener |
| CN114135364A (en) * | 2021-12-07 | 2022-03-04 | 杭叉集团股份有限公司 | Three-channel parallel double-resonant-cavity exhaust muffler for industrial vehicle |
| CN114135364B (en) * | 2021-12-07 | 2023-09-15 | 杭叉集团股份有限公司 | Three-channel parallel double-resonant-cavity industrial vehicle exhaust muffler |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180223 |