CN105370344A - Oblique separating plate type muffler - Google Patents
Oblique separating plate type muffler Download PDFInfo
- Publication number
- CN105370344A CN105370344A CN201510913997.4A CN201510913997A CN105370344A CN 105370344 A CN105370344 A CN 105370344A CN 201510913997 A CN201510913997 A CN 201510913997A CN 105370344 A CN105370344 A CN 105370344A
- Authority
- CN
- China
- Prior art keywords
- housing
- separating plate
- air
- suction tude
- air pipe
- 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.)
- Pending
Links
Classifications
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- 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
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
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- 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
- F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
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- 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
- F01N2210/00—Combination of methods of silencing
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- 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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
Abstract
The invention discloses an oblique separating plate type muffler. According to the scheme, the oblique separating plate type muffler comprises a housing, wherein one end of the housing is connected to an air intake tube while the other end of the housing is connected to an air exhausting tube; a first separating plate and a second separating plate are arranged in the housing and can divide the inner part of the housing into an upper chamber, an intermediate chamber and a lower chamber; the first separating plate is obliquely upwards arranged from the air intake tube to the air exhausting tube; the second separating plate is obliquely upwards arranged from the air exhausting tube to the air intake tube; vertical air conduits are arranged in the housing and are uniformly distributed in a form of an array on the bottom surface of the housing; ventilating holes are formed in parts, in the upper chamber and the lower chamber, of each air conduit. The oblique separating plate type muffler enables mutual overlapping of sound wave, thus achieving the purpose of removing noise.
Description
Technical field
The present invention relates to a kind of tilt clapboard silencing apparatus.
Background technique
Noise is one of three major source of pollution, and the noise of motor vehicle institute radiation accounts for 75% of whole environmental noise power.Therefore, the noise reducing motor vehicle itself reduces the most basic approach of urban environment noise.And exhaust sound is the main noise source of automobile and motor, often 10dB (A) ~ 15dB (A) higher than motor total noise of centrifuge (except exhaust sound).To the control of engine exhaust noise, two aspects can be divided into: can take measures to noise source itself on the one hand, these needs are started with from noise source Analysis on Mechanism, take corresponding countermeasure; Measure on the other hand comprises the mechanical noise adopting exhaust silencer and control to be transmitted by enmgine exhaust.Wherein, be the most effectively, the most simply adopt exhaust silencer.A good silencing apparatus should meet the following conditions: 1. acoustic attenuation performance is good, in the whole frequency range of exhaust sound, should have enough sound deadening capacities, avoids producing reproduced air-flow noise simultaneously as far as possible; 2. drag losses is little, and namely the power of silencing apparatus consumption of engine is little as far as possible; 3. can be high temperature resistant, corrosion-resistant, good mechanical property, reliable operation, long service life, housing and internal partition good rigidity, in case excite judder radiated noise.
Resistive, resistance and impedance composite muffler three class can be divided into by noise elimination mechanism.Dissipative muffler suitably arranges sound-absorbing material in pipeline, partially absorbs the acoustic energy propagated in pipeline, has good soundproof effect within the scope of medium-high frequency.Reactive muffler utilizes the pipeline of various shape, size or the combination of resonant cavity, impedance mismatching when causing sound wave to propagate in systems in which, makes sound wave reflection occur in pipeline and resonant cavity or interfere, thus reduce the acoustic energy exported.The noise elimination frequency band of reactive muffler is narrower, and better at medium and low frequency soundproof effect, high frequency is poor.Impedance composite muffler is that resistive and reactive muffler are combined, and all has good soundproof effect from low frequency, intermediate frequency to high frequency.
Current modal automobile exhaust muffler mostly is impedance complex formula structure, utilizes the helmholtz resonance chamber in resistance chamber and wavelength tube to eliminate the noise of medium and low frequency section, utilizes the sound-absorbing material in resistive chamber to absorb the noise of medium-high frequency section.When considering engine exhaust, air-flow velocity is very high, and the high speed pulse pneumatic of exhaust can produce aerodynamic noise, also can produce structural radiation noise by excited vibrational when this high speed pulse pneumatic impulse piping, housing and dividing plate.
For the problems referred to above, publication number is that the patent document of CN204729151U discloses a kind of automotive muffler, its technological scheme is: comprise housing, be arranged on the suction tude in housing, outlet pipe and arm, one end of described suction tude and arm forms the first anechoic chamber, the other end of described arm and outlet pipe form the second anechoic chamber, screw rod is provided with in described outlet pipe, the outer surface of described housing is provided with buffer layer, in described suction tude, outlet pipe and arm, is respectively arranged with muffle coating.
In the technological scheme of above-mentioned patent, by means of only the sound deadening of noise reduction decompression and silencing cotton to reduction tail gas noise, erasure effect is limited.
Summary of the invention
The invention is intended to provide a kind of tilt clapboard silencing apparatus, superpose mutually the object reaching stress release treatment to make sound wave.
Tilt clapboard silencing apparatus in this programme, base case is: comprise housing, shell one end connects suction tude, the housing the other end connects steam outlet pipe, the first dividing plate and second partition is provided with in housing, first, enclosure interior is divided into by second partition, neutralize lower three chambers, first dividing plate tilts upward setting by suction tude to steam outlet pipe direction, second partition tilts upward setting by steam outlet pipe to suction tude direction, vertical air pipe is also provided with in housing, air pipe is evenly arranged in array on housing bottom surface, air pipe is upper, part in lower two chambers is provided with vent.
Working principle and beneficial effect: tail gas is entered the lower chambers in housing by suction tude, then enter air pipe by the air hole on air pipe.Because air pipe is evenly arranged in array on housing bottom surface, thus on case width direction due to air pipe between have certain distance, the noise of generation superposes, and reaches the object abated the noise.Other first dividing plate tilts upward setting by suction tude to steam outlet pipe direction, and second partition tilts upward setting by steam outlet pipe to suction tude direction.The sectional area of the circulation of tail gas in upper and lower chamber is increased gradually, serves the effect of decompression noise reduction.In sum, the beneficial effect of this programme is the effect that the dividing plate by being obliquely installed reaches decompression noise reduction, and the air pipe arranged by array-type makes sound wave superpose mutually, reaches the effect of noise reduction.
Scheme 2, as the improvement to base case, is filled with quieter material in middle chamber.Advantage is, improves the effect of noise reduction further
Scheme 3, as the improvement to scheme 2, quieter material is noise reduction glass wool.Advantage is, cheap and easy to get, and high-temperature resistance is strong
Scheme 4, as the improvement to base case, the gross area of the air hole of air pipe in upper chamber is greater than the sectional area of steam outlet pipe.Advantage is, avoids producing secondary noise during air-flow via hole.
Scheme 5, as the improvement to base case, air pipe is greater than the sectional area of suction tude at the gross area of the air hole of bottom chamber.Advantage is, avoids producing secondary noise during air-flow via hole.
Accompanying drawing explanation
Fig. 1 is the structural representation of tilt clapboard silencing apparatus embodiment of the present invention.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference character in Figure of description comprises: suction tude 10, housing 20, first dividing plate 21, air pipe 22, vent 23, second partition 24, noise reduction glass wool 30, steam outlet pipe 40.
Embodiment
As shown in Figure 1, tilt clapboard silencing apparatus, scheme is: comprise housing 20, housing 20 one end connects suction tude 10, housing 20 the other end connects steam outlet pipe 40, the first dividing plate 21 and second partition 24 is provided with in housing 20, first, housing 20 inside is divided into by second partition, neutralize lower three chambers, first dividing plate 21 tilts upward setting by suction tude 10 to steam outlet pipe 40 direction, second partition 24 tilts upward setting by steam outlet pipe 40 to suction tude 10 direction, vertical air pipe 22 is also provided with in housing 20, air pipe 22 is evenly arranged in array on housing 20 bottom surface, air pipe 22 is upper, part in lower two chambers is provided with vent 23.
In addition, in the present embodiment, quieter material is filled with in middle chamber.Advantage is, improves the effect of noise reduction further.Quieter material is noise reduction glass wool 30.Advantage is, cheap and easy to get, and high-temperature resistance is strong.The gross area of the air hole of air pipe 22 in upper chamber is greater than the sectional area of steam outlet pipe 40.Advantage is, avoids producing secondary noise during air-flow via hole.Air pipe 22 is greater than the sectional area of suction tude 10 at the gross area of the air hole of bottom chamber.Advantage is, avoids producing secondary noise during air-flow via hole.
Tail gas enters the lower chambers in housing 20 by suction tude 10, then enters air pipe 22 by the air hole 23 on air pipe 22.Because air pipe 22 is evenly arranged in array on housing 20 bottom surface, thus on housing 20 width direction due to air pipe 22 between have certain distance, the noise of generation superposes, and reaches the object abated the noise.Other first dividing plate 21 tilts upward setting by suction tude 10 to steam outlet pipe 40 direction, and second partition 24 tilts upward setting by steam outlet pipe 40 to suction tude 10 direction.The sectional area of the circulation of tail gas in upper and lower chamber is increased gradually, serves the effect of decompression noise reduction.So the present embodiment is the effect that the dividing plate by being obliquely installed reaches decompression noise reduction, and the air pipe 22 arranged by array-type makes sound wave superpose mutually, reaches the effect of noise reduction.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and/or characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification etc. record the content that may be used for explaining claim.
Claims (5)
1. tilt clapboard silencing apparatus, comprise housing, described shell one end connects suction tude, the described housing the other end connects steam outlet pipe, the first dividing plate and second partition is provided with in described housing, described first, enclosure interior is divided into by second partition, neutralize lower three chambers, it is characterized in that, described first dividing plate tilts upward setting by suction tude to steam outlet pipe direction, described second partition tilts upward setting by steam outlet pipe to suction tude direction, vertical air pipe is also provided with in described housing, described air pipe is evenly arranged in array on housing bottom surface, described air pipe is upper, part in lower two chambers is provided with vent.
2. tilt clapboard silencing apparatus according to claim 1, is characterized in that: be filled with quieter material in described middle chamber.
3. tilt clapboard silencing apparatus according to claim 2, is characterized in that: described quieter material is noise reduction glass wool.
4. tilt clapboard silencing apparatus according to claim 1, is characterized in that: the gross area of the air hole of described air pipe in upper chamber is greater than the sectional area of steam outlet pipe.
5. tilt clapboard silencing apparatus according to claim 1, is characterized in that: described air pipe is greater than the sectional area of suction tude at the gross area of the air hole of bottom chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510913997.4A CN105370344A (en) | 2015-12-12 | 2015-12-12 | Oblique separating plate type muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510913997.4A CN105370344A (en) | 2015-12-12 | 2015-12-12 | Oblique separating plate type muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105370344A true CN105370344A (en) | 2016-03-02 |
Family
ID=55372895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510913997.4A Pending CN105370344A (en) | 2015-12-12 | 2015-12-12 | Oblique separating plate type muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105370344A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649713A (en) * | 2016-03-11 | 2016-06-08 | 江龙船艇科技股份有限公司 | Integrated ship noise elimination and air exhausting device |
-
2015
- 2015-12-12 CN CN201510913997.4A patent/CN105370344A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649713A (en) * | 2016-03-11 | 2016-06-08 | 江龙船艇科技股份有限公司 | Integrated ship noise elimination and air exhausting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160302 |
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| WD01 | Invention patent application deemed withdrawn after publication |