CN102628392A - Muffler - Google Patents
Muffler Download PDFInfo
- Publication number
- CN102628392A CN102628392A CN2012101080786A CN201210108078A CN102628392A CN 102628392 A CN102628392 A CN 102628392A CN 2012101080786 A CN2012101080786 A CN 2012101080786A CN 201210108078 A CN201210108078 A CN 201210108078A CN 102628392 A CN102628392 A CN 102628392A
- Authority
- CN
- China
- Prior art keywords
- baffler
- muffling
- end part
- noise elimination
- circular arc
- 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.)
- Granted
Links
Images
Abstract
The invention provides a muffler, belonging to the field of muffling devices and solving the problem that a traditional muffling device is poor in muffling effect. The muffler disclosed by the invention comprises a cylindrical hollow cylinder body, wherein the cylinder body comprises a first end part, a second end part and a muffling part positioned between the first end part and the second end part; outer surfaces of the first end part and the second end part are smooth; the outer surface of the muffling part is partially inwards concaved to form a plurality of semicircular depressed parts; the depressed parts comprise diameter sides and arc sides; and the arc sides inwards extend to form circular arc parts. The continuously-transmitted high-speed air current is stopped by the circular arc parts, so that the speed of the air current is reduced; on the other hand, vacuum back suction is formed in a gap due to the pressure difference action in the gaps of the depressed parts, the high-speed air current is effectively discharged from the muffler cylinder body and is further absorbed by a muffling material, so that the muffler disclosed by the invention is favorable in muffling effect, is simple in structure and is convenient for large-scale production.
Description
Technical field
The present invention relates to a kind of silencer, relate in particular to the good baffler of a kind of erasure effect.
Background technique
Baffler is meant what the principles such as absorption, reflection and interference according to sound were made, in order to reduce the noise of sound source radiation.Automobile is in the process that starts with high speed operation, and by discharging at a high speed, because outlet pipe is generally processed by the less cylindrical tube of bore, the waste gas that high speed flow is crossed is a large amount of noises of generation in the process of discharging through outlet pipe for waste gas.
For eliminating this kind noise; Existing baffler is many through on the outer wall of hollow cylindrical tube, offering a plurality of apertures to form baffler; Like notification number is the disclosed Chinese patent of CN2392916Y; It passes through the evenly distributed aperture in the column-shaped barrel bottom, and suction ripple cotton is set to reach the effect of sound absorption at the column-shaped barrel outer surface.Yet the sound-absorbing effect of this kind baffler is also bad; Its main cause is; When air-flow during along the column-shaped barrel lateral transport, be opened in circular port on the column-shaped barrel can not make air-flow effectively radial propagation ripple is cotton to be absorbed so that gas is inhaled through this circular port, reach the effect of noise reduction.
Summary of the invention
Technical problem to be solved by this invention is, to the above-mentioned deficiency of existing technology, propose a kind of simple in structure, be convenient to process and baffler that erasure effect is good.
The present invention solves the technological scheme that its technical problem adopts, and proposes a kind of baffler, and it comprises the cylindrical, hollow cylindrical shell, and said cylindrical shell comprises first end, the second end and the noise elimination part between first end and the second end; Said first end and the second end outer surface smoother, said noise elimination part outer surface part cave inward and form a plurality of semi-cylindrical canyon portion, and said depressed part comprises diameter limit and arc limit, the said arc limit circular arc part that extended internally.
Further, said baffler also comprises the noise reduction layer that is coated on said noise elimination part outer surface.
Further, said noise reduction layer is glass wool layer, slag wool layer, porous fiber layer or layer of polyester fiber.
Further, said circular arc part and said noise elimination part outer surface angle are 15 ° to 30 °.
The present invention also provides another kind of baffler; It comprises the cylindrical, hollow cylindrical shell; Said cylindrical shell comprises first end, the second end and the noise elimination part between first end and the second end, and said noise elimination part comprises the second noise reduction section between the first noise reduction section, the second end and the intermediate section between intermediate section, first end and the intermediate section; Said first end, the second end and intermediate section outer surface smoother, the said first noise reduction section and the second noise reduction section partly cave inward and form a plurality of semi-cylindrical canyon portion, and said depressed part comprises diameter limit and arc limit, the said arc limit circular arc part that extended internally.
Further, said baffler also comprises the noise reduction layer that is coated on said noise elimination part outer surface.
Further, said noise reduction layer is glass wool layer, slag wool layer, porous fiber layer or layer of polyester fiber.
Further, said circular arc part and said noise elimination part outer surface angle are 15 ° to 30 °.
The present invention is through forming the depressed part that caves inward in the baffler outer surface part; This depressed part is semicircle; Its circular arc limit circular arc part that extended internally, the high velocity air that transmits is continually stopped by circular arc part on the one hand and speed reduces, on the other hand because the pressure difference effect in the depressed part space; In the space, form the vacuum resorption; High velocity air is absorbed by the noise reduction layer by exhaust silencer cylindrical shell effectively, makes that the erasure effect of baffler of the present invention is good, and simple in structurely is convenient to mass production.
Description of drawings
Fig. 1 is baffler one embodiment's neutral body structural representation of the present invention;
Fig. 2 is a baffler shown in Figure 1 sectional view when using;
Fig. 3 is the enlarged view at A position among Fig. 2;
Fig. 4 is another embodiment's neutral body structural representation of baffler of the present invention.
Embodiment
Below be specific embodiment of the present invention and combine accompanying drawing, technological scheme of the present invention is done further to describe, but the present invention is not limited to these embodiments.
Please with reference to Fig. 1, Fig. 1 is baffler one embodiment's neutral body structural representation of the present invention.Baffler comprises columniform hollow cylinder 10, and cylindrical shell 10 is divided into first end 11, the second end 12 and the noise elimination part 13 between first end 11 and the second end 12.First end 11 and the second end 12 outer surface smoother, noise elimination part 13 outer surface part cave inward and form a plurality of depressed parts 130.Depressed part 130 semicirculars in shape comprise diameter limit 1301 and arc limit 1302, arc limit 1302 circular arc part 1303 that extended internally, and circular arc part 1303 forms the space with noise elimination part 13 outer surfaces.
Like Fig. 2, shown in Figure 3, Fig. 2 is a baffler shown in Figure 1 sectional view when using, and Fig. 3 is the enlarged view at A position among Fig. 2.Among Fig. 2; The first end 11 of baffler cylindrical shell 10 admission line 1, the second end 12 outlet pipe 2 that is tightly connected that is tightly connected; Noise elimination part 13 outer surfaces are coated with the noise reduction layer 3 that is made by quieter material, and quieter material can be glass wool, slag wool, porous fibre, polyester fibre etc.The direction of arrow is airflow direction among Fig. 2, Fig. 3, and high velocity air gets in the noise elimination part 13 via admission line 1 and first end 11 backs, is stopped that this moment, circular arc part 1303 had the effect that reduces airspeed during high velocity air process circular arc part 1303; High velocity air is walked around circular arc part 1303 continuation transmission forward simultaneously; Make the space internal air pressure reduce; Form the near vacuum state, the high velocity air that therefore transmits is continually stopped and the speed reduction by circular arc part 1303 on the one hand, on the other hand because the pressure difference effect in the space; In the space, form the vacuum resorption, high velocity air is inner and absorbed by noise reduction layer 3 by exhaust silencer cylindrical shell effectively 10.
In a preferred embodiment, circular arc part 1303 is 15 to 45 ° with noise elimination part 13 outer surface angles.When adopting this kind angle, its erasure effect is better.
Please with reference to Fig. 4, Fig. 4 is another embodiment's neutral body structural representation of baffler of the present invention.In the present embodiment; Baffler comprises cylindrical tube 10 '; Cylindrical shell 10 ' be divided into first end 11 ', the second end 12 ' and be positioned at first end 11 ' and the second end 12 ' between noise elimination part 13 '; Noise elimination part 13 ' comprises intermediate section 14 ', is formed with the first noise reduction section 15 ' and the second noise reduction section 16 ' between intermediate section 14 ' and first end 11 ' and the second end 12 '; First end 11 ', the second end 12 ' and intermediate section 14 ' outer surface smoother; The first noise reduction section 15 ' and the second noise reduction section, 16 ' outer surface part all cave inward and form a plurality of depressed parts 130 '; These a plurality of depressed parts 130 ' are identical with depressed part 130 structures among first embodiment, repeat no more at this.
Baffler shown in Figure 4 is used on the discharge capacity bigger high capacity waggon or truck more; The exhaust duct bore of high capacity waggon or truck is bigger, so the bore of its baffler is also bigger, makes that the quantity of depressed part 130 ' is more; Therefore under the prerequisite that guarantees erasure effect; Need not on noise elimination part, to be covered with depressed part, can strengthen the quality of baffler like this, make the longer service life of baffler.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (8)
1. baffler, it is characterized in that: comprise the cylindrical, hollow cylindrical shell, said cylindrical shell comprises first end, the second end and the noise elimination part between first end and the second end; Said first end and the second end outer surface smoother, said noise elimination part outer surface part cave inward and form a plurality of semi-cylindrical canyon portion, and said depressed part comprises diameter limit and arc limit, the said arc limit circular arc part that extended internally.
2. baffler as claimed in claim 1 is characterized in that: said baffler also comprises the quieter material that is coated on said noise elimination part outer surface.
3. baffler as claimed in claim 2 is characterized in that: said quieter material is glass wool, slag wool, porous fibre or polyester fibre.
4. baffler as claimed in claim 1 is characterized in that: said circular arc part and said noise elimination part outer surface angle are 15 ° to 30 °.
5. baffler; It is characterized in that: comprise the cylindrical, hollow cylindrical shell; Said cylindrical shell comprises first end, the second end and the noise elimination part between first end and the second end, and said noise elimination part comprises the second noise reduction section between the first noise reduction section, the second end and the intermediate section between intermediate section, first end and the intermediate section; Said first end, the second end and intermediate section outer surface smoother, the said first noise reduction section and the second noise reduction section partly cave inward and form a plurality of semi-cylindrical canyon portion, and said depressed part comprises diameter limit and arc limit, the said arc limit circular arc part that extended internally.
6. baffler as claimed in claim 5 is characterized in that: said baffler also comprises the quieter material that is coated on said noise elimination part outer surface.
7. baffler as claimed in claim 6 is characterized in that: said quieter material is glass wool, slag wool, porous fibre or polyester fibre.
8. baffler as claimed in claim 5 is characterized in that: said circular arc part and said noise elimination part outer surface angle are 15 ° to 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210108078.6A CN102628392B (en) | 2012-04-11 | 2012-04-11 | Muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210108078.6A CN102628392B (en) | 2012-04-11 | 2012-04-11 | Muffler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102628392A true CN102628392A (en) | 2012-08-08 |
| CN102628392B CN102628392B (en) | 2015-07-15 |
Family
ID=46586753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210108078.6A Active CN102628392B (en) | 2012-04-11 | 2012-04-11 | Muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102628392B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104545697A (en) * | 2013-10-28 | 2015-04-29 | 江苏美的春花电器股份有限公司 | Connection pipe assembly for dust collector and dust collector with connection pipe assembly |
| CN106593599A (en) * | 2015-10-14 | 2017-04-26 | 友信工业株式会社 | Exhaust valve for muffler and muffler including the same |
| CN112228188A (en) * | 2020-10-27 | 2021-01-15 | 湖南德力重工有限公司 | Excavator exhaust treatment device and using method thereof |
| CN113350652A (en) * | 2021-07-05 | 2021-09-07 | 湖南比扬医疗科技有限公司 | High-pressure oxygen noise reduction device and high-flow humidification system |
| US11763789B2 (en) | 2021-08-25 | 2023-09-19 | Ningbo Gns Auto Parts Co., Ltd. | Silencer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2511597A (en) * | 1947-04-30 | 1950-06-13 | Joseph P Marx | Muffler with cup-shaped baffle |
| US2557687A (en) * | 1948-04-27 | 1951-06-19 | Omer J Rainville | Baffle type exhaust silencer |
| JPH0771246A (en) * | 1993-08-30 | 1995-03-14 | Suzuki Motor Corp | Exhaust device for engine |
| CN2422454Y (en) * | 2000-05-15 | 2001-03-07 | 郭兴无 | Silencer |
| US20040163886A1 (en) * | 2002-02-15 | 2004-08-26 | Sutera Anthony J. | Air turbine for combustion engine |
| JP2005146855A (en) * | 2003-11-11 | 2005-06-09 | Komatsu Ltd | Heat insulation structure for exhaust muffler |
| CN201277080Y (en) * | 2008-10-20 | 2009-07-22 | 姜志明 | Automobile exhaust pipe |
| CN202544969U (en) * | 2012-04-11 | 2012-11-21 | 宁波市鄞州吉士汽配有限公司 | Silencer |
-
2012
- 2012-04-11 CN CN201210108078.6A patent/CN102628392B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2511597A (en) * | 1947-04-30 | 1950-06-13 | Joseph P Marx | Muffler with cup-shaped baffle |
| US2557687A (en) * | 1948-04-27 | 1951-06-19 | Omer J Rainville | Baffle type exhaust silencer |
| JPH0771246A (en) * | 1993-08-30 | 1995-03-14 | Suzuki Motor Corp | Exhaust device for engine |
| CN2422454Y (en) * | 2000-05-15 | 2001-03-07 | 郭兴无 | Silencer |
| US20040163886A1 (en) * | 2002-02-15 | 2004-08-26 | Sutera Anthony J. | Air turbine for combustion engine |
| JP2005146855A (en) * | 2003-11-11 | 2005-06-09 | Komatsu Ltd | Heat insulation structure for exhaust muffler |
| CN201277080Y (en) * | 2008-10-20 | 2009-07-22 | 姜志明 | Automobile exhaust pipe |
| CN202544969U (en) * | 2012-04-11 | 2012-11-21 | 宁波市鄞州吉士汽配有限公司 | Silencer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104545697A (en) * | 2013-10-28 | 2015-04-29 | 江苏美的春花电器股份有限公司 | Connection pipe assembly for dust collector and dust collector with connection pipe assembly |
| CN106593599A (en) * | 2015-10-14 | 2017-04-26 | 友信工业株式会社 | Exhaust valve for muffler and muffler including the same |
| CN106593599B (en) * | 2015-10-14 | 2019-04-16 | 友信工业株式会社 | Exhaust valve for muffler and the muffler including the exhaust valve |
| CN112228188A (en) * | 2020-10-27 | 2021-01-15 | 湖南德力重工有限公司 | Excavator exhaust treatment device and using method thereof |
| CN112228188B (en) * | 2020-10-27 | 2021-09-03 | 湖南德力重工有限公司 | Excavator exhaust treatment device and using method thereof |
| CN113350652A (en) * | 2021-07-05 | 2021-09-07 | 湖南比扬医疗科技有限公司 | High-pressure oxygen noise reduction device and high-flow humidification system |
| US11763789B2 (en) | 2021-08-25 | 2023-09-19 | Ningbo Gns Auto Parts Co., Ltd. | Silencer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102628392B (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102628392B (en) | Muffler | |
| CN210135050U (en) | Electronic vacuum pump and exhaust pipe silencing device thereof | |
| WO2019011313A1 (en) | Vacuum cleaner and motor module thereof | |
| CN106468197A (en) | A kind of wideband noise-reducing silencer | |
| CN202544969U (en) | Silencer | |
| CN102635424A (en) | Ultra silent silencer | |
| CN202544968U (en) | Super mute silencer | |
| TWM270005U (en) | Interlaced silencer for pneumatic tool | |
| CN203655388U (en) | Muffler for motorcycle | |
| CN206274011U (en) | A kind of low impulsive force muffler of microperforated panel | |
| CN212118032U (en) | Dust collector and mute assembly | |
| CN206338099U (en) | A kind of wideband noise-reducing silencer | |
| CN205977325U (en) | Vehicle vent -pipe muffler | |
| CN202108561U (en) | Exhaust muffler for automobile | |
| CN104791049A (en) | Automobile exhaust silencer | |
| CN204476531U (en) | A kind of motorcycle exhaust outlet pipe | |
| CN200940505Y (en) | Energy saving exhaust tail tube of automobile | |
| CN201218382Y (en) | Resistance silencer | |
| CN110522344B (en) | Dust collector and mute assembly | |
| CN202117737U (en) | Exhaust silencer for high-capacity automobile | |
| CN102392717A (en) | Automobile silencer with five chambers | |
| CN208122934U (en) | A kind of novel impedance composite muffler | |
| CN202108562U (en) | Exhaust muffler | |
| CN206753854U (en) | A kind of low frequency muffler | |
| CN205779125U (en) | A kind of automobile exhaust muffler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 315137 Xu village, Yunlong Town, Ningbo, Zhejiang, Yinzhou District Patentee after: NINGBO GNS AUTO PARTS Co.,Ltd. Address before: Yinzhou District Yunlong Town Village 315137 Zhejiang province di Ningbo City Patentee before: NINGBO YINZHOU GNS AUTO PARTS Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: a silencer Effective date of registration: 20220809 Granted publication date: 20150715 Pledgee: Ningbo Yinzhou Rural Commercial Bank Co.,Ltd. Yunlong sub branch Pledgor: NINGBO GNS AUTO PARTS CO.,LTD. Registration number: Y2022330001687 |