CN201202513Y - Exhausting silencer with variable volume - Google Patents
Exhausting silencer with variable volume Download PDFInfo
- Publication number
- CN201202513Y CN201202513Y CNU2008200984956U CN200820098495U CN201202513Y CN 201202513 Y CN201202513 Y CN 201202513Y CN U2008200984956 U CNU2008200984956 U CN U2008200984956U CN 200820098495 U CN200820098495 U CN 200820098495U CN 201202513 Y CN201202513 Y CN 201202513Y
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- cavity
- stationary barrier
- partition board
- chamber
- variable volume
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- Expired - Fee Related
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Abstract
The utility model discloses a variable-volume exhaust muffler, comprising a gas inlet pipe, an expansion cavity and an exhaust pipe; the expansion cavity comprises a cavity wall, a front end cover and a rear end cover; a mobile partition board is arranged in the expansion cavity and divides the expansion cavity into a cavity I and a cavity II; the cavity I and the cavity II are communicated with each other through at least a resonance hole; the gas outlet of the gas inlet pipe and the gas inlet of the exhaust pipe are arranged in the cavity I; the mobile partition board is provided with at least a flexible pre-tightening force device; the pre-tightening force direction of the flexible pre-tightening force device right faces the cavity I; the utility model can achieve self-regulation of the cavity volume so as to reach the dynamic elimination effect that the noise elimination frequency of the muffler is able to be increased along with the increase of the engine rotating speed, or is able to be reduced along with the decrease of the engine rotating speed, thereby achieving low frequency dynamic noise elimination; therefore, the utility model has good low-frequency noise elimination effect and can effectively eliminate the exhaust noise; at the same time, through the movement of the mobile partition board, the utility model can achieve the function of attenuating and reducing the exhaust pressure in the expansion cavity, and has compact and simple structure.
Description
Technical field
The utility model relates to a kind of exhaust silencer, particularly a kind of exhaust silencer of variable volume.
Background technique
Ambient noise is meant the sound of living around the interference that is produced in industrial production, construction, communications and transportation and social life.Pollution from environmental noise is meant that the ambient noise that produced surpasses the ambient noise emission standard of national regulation, and disturbs the phenomenon of other people normal life, working and learning.
Raising along with industrialization degree, the noise hazard scope enlarges day by day, traffic noise becomes topmost noise source in the current urban environment noise, and exhaust sound is the main noise source of automobile and motor thereof, and adopting silencing apparatus is the most effective noise reduction means that the control exhaust sound generally adopts.In the prior art, the acoustic attenuation performance of most of exhaust silencers depends on and adopts individual layer expansion cavity structure, and sound wave to the external world, directly causes the noise major part directly to be transmitted to the external world from expansion cavity wall direct radiation, causes noise pollution; And existing silencing apparatus frequency of noise elimination can not automatically adjust with the variation of engine operating condition, be in passivity all the time, and engine exhaust noise is tangible characteristics of low-frequency, and changes with rotation speed change.
Therefore, need a kind of exhaust silencer, can effectively stop the radiation to external world of noise sound wave, effectively eliminate or the minimizing exhaust sound environmental pollution that alleviates noise.
The model utility content
In view of this, the purpose of this utility model provides a kind of exhaust silencer of variable volume, can effectively stop the radiation to external world of noise sound wave, effectively eliminate or the minimizing exhaust sound, and the environmental pollution that alleviates noise, simple and compact for structure.
For achieving the above object, the exhaust silencer of a kind of variable volume of the present utility model, comprise suction tude, expansion cavity and outlet pipe, described expansion cavity comprises chamber wall, front cover and rear end cover, be provided with moveable partition board in the described expansion cavity, described moveable partition board is divided into chamber I and chamber II with expansion cavity, is communicated with by at least one resonance hole between described chamber I and the chamber II; The air outlet of suction tude and the suction port of outlet pipe are arranged in the I of chamber, and described moveable partition board is provided with at least one elasticity pretightening force device, and the pretightening force direction of elasticity pretightening force device is over against chamber I.
Further, described chamber wall, front cover and rear end cover are respectively double-deck and are provided with, and have the gap between nexine and the skin;
Further, described rear end cover nexine internal surface is set with sound-absorbing material;
Further, described moveable partition board laterally is provided with perpendicular to the chamber wall, is provided with at least one stationary barrier parallel with moveable partition board in the described chamber I, and described stationary barrier is provided with at least one through hole;
Further, described stationary barrier is two and is set up in parallel, be respectively first stationary barrier and second stationary barrier, the air outlet of described suction tude is arranged in the cavity between second stationary barrier and the moveable partition board, and the suction port of outlet pipe is arranged in the cavity between first stationary barrier and the front cover;
Further, described suction tude is passed front cover, first stationary barrier and second stationary barrier successively; Outlet pipe passes first stationary barrier, second stationary barrier, moveable partition board and rear end cover successively; Also comprise discharger, described discharger passes first stationary barrier and second stationary barrier successively, and two-port lays respectively in the cavity between first stationary barrier and the front cover and in the cavity between second stationary barrier and the moveable partition board;
Further, described elasticity pretightening force device comprises spring, guide rod and locking device, and described guide rod one end is fixedly installed on the rear end cover, the other end passes moveable partition board and locking device is set, spring housing is on guide rod, and an end is near rear end cover, the other end by pretightening force near moveable partition board; Described locking device is nut, snap ring or pin;
Further, the two-port of the suction port of the air outlet of described suction tude, outlet pipe and spill pipe adopts the horn mouth shape;
Further, described resonance hole is arranged on the moveable partition board;
Further, described outlet pipe is by chamber II, and the resonance hole is arranged on outlet pipe by on the pipeline section of chamber II.
The beneficial effects of the utility model are: the exhaust silencer of variable volume of the present utility model,
Adopt the double layer construction expansion cavity, adopt the moveable bulkhead structure, expansion cavity is divided into two chambeies, realize the chamber volume self-control, thereby can automatically adjust with engine speed change, reaching along with engine speed increases the silencing apparatus frequency of noise elimination increases, engine speed reduces the dynamic noise elimination effect that the silencing apparatus frequency of noise elimination reduces, thereby the realization low frequency is dynamically eliminated the noise, have the effect of low frequency noise elimination preferably, effectively eliminate exhaust sound, simultaneously moving by active clapboard, also can realize decaying and reduce the function of exhaust pressure in the expansion cavity, simple and compact for structure; Adopt double layer construction, can reduce silencing apparatus, reduce noise by the case noise radiation; Sound-absorbing material is set, can carries out middle and high frequency sound absorption, further reduce noise; Stationary barrier is set, makes whole silencing apparatus internal structure stable, and the gas of discharging is had damping function, play the effect of further reduction noise; The two-port of the air outlet of suction tude, the suction port of outlet pipe and spill pipe adopts the horn mouth shape, can reduce the generation of air-flow regenerated noise in the silencing apparatus, further reduces noise to external world.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is the utility model embodiment one structural representation;
Fig. 2 be Fig. 1 along A-A to sectional view;
Fig. 3 be Fig. 1 along B-B to sectional view;
Fig. 4 is the utility model embodiment two structural representations;
Fig. 5 be Fig. 4 along C-C to sectional view.
Embodiment
Embodiment one,
Fig. 1 is the utility model embodiment one structural representation, Fig. 2 be Fig. 1 along A-A to sectional view; Fig. 3 be Fig. 1 along B-B to sectional view, as shown in the figure: the exhaust silencer of variable volume of the present utility model, comprise suction tude 1, expansion cavity 2 and outlet pipe 3, expansion cavity 2 comprises chamber wall 2c, front cover 2a and rear end cover 2b, chamber wall 2c, front cover 2a and rear end cover 2b are respectively double-deck and are provided with, and have the gap of 2mm between nexine and the skin; Rear end cover 2b nexine internal surface is set with sound-absorbing material 11;
Be provided with horizontal moveable partition board 4 perpendicular to chamber wall 2c in the expansion cavity 2, moveable partition board 4 is divided into chamber I 21 and chamber II 22 with expansion cavity 2, is communicated with by a plurality of resonance hole 5 between chamber I 21 and the chamber II 22, and present embodiment resonance hole 5 is arranged on the moveable partition board 4; The suction port of the air outlet of suction tude 1 and outlet pipe 3 is arranged in the chamber I 21, and moveable partition board 4 is provided with three elasticity pretightening force devices 6, and the pretightening force direction of elasticity pretightening force device 6 is over against chamber I 21; Elasticity pretightening force device 6 comprises spring 61, guide rod 62 and locking device 63, and present embodiment elasticity pretightening force device 6 is a nut; Guide rod 62 1 ends are fixedly installed on the rear end cover 2b, and the other end passes moveable partition board 4 and locking device 63 is set, and spring 61 is enclosed within on the guide rod 62, and an end is near rear end cover 2b, the other end by pretightening force near moveable partition board 4; Be set side by side with first stationary barrier 7 and second stationary barrier 8 parallel in the chamber I 21 with moveable partition board 4, the air outlet of suction tude 1 is arranged in the cavity between second stationary barrier 8 and the moveable partition board 4, the suction port of outlet pipe 3 is arranged in the cavity between first stationary barrier 7 and the front cover 2a, and stationary barrier is provided with a plurality of through holes 9;
The two-port of the suction port of the air outlet of suction tude 1, outlet pipe 3 and spill pipe 10 adopts the horn mouth shape, and this structure helps reducing the generation of air-flow regenerated noise in the silencing apparatus, further reduces noise to external world.
Embodiment two
Fig. 4 is the utility model embodiment two structural representations, Fig. 5 be Fig. 4 along C-C to sectional view, as shown in the figure: present embodiment and embodiment's one difference is, resonance hole 5 is arranged on outlet pipe 3 by on the pipeline section of chamber II22.
Certainly, locking device 63 is not limited to nut, can also be locking mechanisms such as snap ring or pin; Elasticity pretightening force device 6 also is not limited to three, also can be one or more; Can both realize the model utility purpose.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (10)
1. the exhaust silencer of a variable volume, comprise suction tude (1), expansion cavity (2) and outlet pipe (3), described expansion cavity (2) comprises chamber wall (2c), front cover (2a) and rear end cover (2b), it is characterized in that: be provided with moveable partition board (4) in the described expansion cavity (2), described moveable partition board (4) is divided into chamber I (21) and chamber II (22) with expansion cavity (2), is communicated with by at least one resonance hole (5) between described chamber I (21) and the chamber II (22); The suction port of the air outlet of suction tude (1) and outlet pipe (3) is arranged in the chamber I (21), and described moveable partition board (4) is provided with at least one elasticity pretightening force device (6), and the pretightening force direction of elasticity pretightening force device (6) is over against chamber I (21).
2. the exhaust silencer of variable volume according to claim 1 is characterized in that: described chamber wall (2c), front cover (2a) and rear end cover (2b) are respectively double-deck and are provided with, and have the gap between nexine and the skin.
3. the exhaust silencer of variable volume according to claim 2, it is characterized in that: described rear end cover (2b) nexine internal surface is set with sound-absorbing material (11).
4. the exhaust silencer of variable volume according to claim 3, it is characterized in that: described moveable partition board (4) laterally is provided with perpendicular to chamber wall (2c), be provided with in the described chamber I (21) at least one with the parallel stationary barrier of moveable partition board (4), described stationary barrier is provided with at least one through hole (9).
5. the exhaust silencer of variable volume according to claim 4, it is characterized in that: described stationary barrier is two and is set up in parallel, be respectively first stationary barrier (7) and second stationary barrier (8), the air outlet of described suction tude (1) is arranged in the cavity between second stationary barrier (8) and the moveable partition board (4), and the suction port of outlet pipe (3) is arranged in the cavity between first stationary barrier (7) and the front cover (2a).
6. the exhaust silencer of variable volume according to claim 5, it is characterized in that: described suction tude (1) is passed front cover (2a), first stationary barrier (7) and second stationary barrier (8) successively; Outlet pipe (3) passes first stationary barrier (7), second stationary barrier (8), moveable partition board (4) and rear end cover (2b) successively; Also comprise discharger (10), described discharger (10) passes first stationary barrier (7) and second stationary barrier (8) successively, and two-port lays respectively in the cavity between first stationary barrier (7) and the front cover (2a) and in the cavity between second stationary barrier (8) and the moveable partition board (4).
7. the exhaust silencer of variable volume according to claim 6, it is characterized in that: described elasticity pretightening force device (6) comprises spring (61), guide rod (62) and locking device (63), described guide rod (62) one ends are fixedly installed on the rear end cover (2b), the other end passes moveable partition board (4) and locking device (63) is set, spring (61) is enclosed within on the guide rod (62), one end is near rear end cover (2b), the other end by pretightening force near moveable partition board (4); Described locking device (63) is nut, snap ring or pin.
8. the exhaust silencer of variable volume according to claim 7 is characterized in that: the suction port of the air outlet of described suction tude (1), outlet pipe (3) and the two-port of spill pipe (10) employing horn mouth shape.
9. according to the exhaust silencer of the described variable volume of the arbitrary claim of claim 1 to 8, it is characterized in that: described resonance hole (5) is arranged on the moveable partition board (4).
10. according to the exhaust silencer of the described variable volume of the arbitrary claim of claim 1 to 8, it is characterized in that: described outlet pipe (3) is by chamber II (22), and resonance hole (5) is arranged on outlet pipe (3) by on the pipeline section of chamber II (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200984956U CN201202513Y (en) | 2008-06-05 | 2008-06-05 | Exhausting silencer with variable volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200984956U CN201202513Y (en) | 2008-06-05 | 2008-06-05 | Exhausting silencer with variable volume |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201202513Y true CN201202513Y (en) | 2009-03-04 |
Family
ID=40424827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200984956U Expired - Fee Related CN201202513Y (en) | 2008-06-05 | 2008-06-05 | Exhausting silencer with variable volume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201202513Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392723A (en) * | 2011-10-28 | 2012-03-28 | 上海交通大学 | Turbocharging system with self-regulated-volume exhaust pipe |
| CN102518499A (en) * | 2011-11-29 | 2012-06-27 | 中国商用飞机有限责任公司 | Silencer |
| CN102562242A (en) * | 2010-12-07 | 2012-07-11 | J·埃贝斯佩歇合资公司 | Housing |
| CN102996203A (en) * | 2012-11-29 | 2013-03-27 | 柳州柳工挖掘机有限公司 | Engine silencer |
| CN103195542A (en) * | 2013-04-28 | 2013-07-10 | 湖南车用***二厂 | Silencer of triangular rotor engine |
| RU2508456C1 (en) * | 2012-08-09 | 2014-02-27 | Александр Алексеевич Семенов | Damper |
| CN103899384A (en) * | 2014-03-28 | 2014-07-02 | 长城汽车股份有限公司 | Automotive muffler |
| CN108798828A (en) * | 2018-06-25 | 2018-11-13 | 南京世界村汽车动力有限公司 | A kind of car engine silencer |
| CN110259767A (en) * | 2019-06-28 | 2019-09-20 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of broad band low frequency hydraulic pulsation pressure damper |
| CN110397528A (en) * | 2019-07-29 | 2019-11-01 | 浙江吉利新能源商用车集团有限公司 | Sound-attenuating system, sound reduction method and vehicle for air inlet system and exhaust system |
| DE202021003793U1 (en) | 2021-12-16 | 2022-01-14 | Stefan Burghardt | 360° link control for reflection silencer |
| DE202022000300U1 (en) | 2022-02-05 | 2022-02-18 | Stefan Burghardt | Reflection silencer with 360° link control with slotted holes |
| DE202022000229U1 (en) | 2022-01-28 | 2022-03-08 | Stefan Burghardt | Reflection silencer with 360° link control with slot |
| DE202021003282U1 (en) | 2021-10-21 | 2022-03-14 | Stefan Burghardt | Reflective silencer with 360° scene control |
-
2008
- 2008-06-05 CN CNU2008200984956U patent/CN201202513Y/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562242B (en) * | 2010-12-07 | 2014-11-05 | J·埃贝斯佩歇合资公司 | Housing |
| CN102562242A (en) * | 2010-12-07 | 2012-07-11 | J·埃贝斯佩歇合资公司 | Housing |
| CN102392723A (en) * | 2011-10-28 | 2012-03-28 | 上海交通大学 | Turbocharging system with self-regulated-volume exhaust pipe |
| CN102518499A (en) * | 2011-11-29 | 2012-06-27 | 中国商用飞机有限责任公司 | Silencer |
| RU2508456C1 (en) * | 2012-08-09 | 2014-02-27 | Александр Алексеевич Семенов | Damper |
| CN102996203A (en) * | 2012-11-29 | 2013-03-27 | 柳州柳工挖掘机有限公司 | Engine silencer |
| CN102996203B (en) * | 2012-11-29 | 2014-12-24 | 柳州柳工挖掘机有限公司 | Engine silencer |
| CN103195542A (en) * | 2013-04-28 | 2013-07-10 | 湖南车用***二厂 | Silencer of triangular rotor engine |
| CN103899384A (en) * | 2014-03-28 | 2014-07-02 | 长城汽车股份有限公司 | Automotive muffler |
| CN103899384B (en) * | 2014-03-28 | 2016-03-09 | 长城汽车股份有限公司 | Automotive muffler |
| CN108798828A (en) * | 2018-06-25 | 2018-11-13 | 南京世界村汽车动力有限公司 | A kind of car engine silencer |
| CN110259767A (en) * | 2019-06-28 | 2019-09-20 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of broad band low frequency hydraulic pulsation pressure damper |
| CN110259767B (en) * | 2019-06-28 | 2020-05-05 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Low-frequency broadband hydraulic pulsating pressure attenuator |
| CN110397528A (en) * | 2019-07-29 | 2019-11-01 | 浙江吉利新能源商用车集团有限公司 | Sound-attenuating system, sound reduction method and vehicle for air inlet system and exhaust system |
| DE202021003282U1 (en) | 2021-10-21 | 2022-03-14 | Stefan Burghardt | Reflective silencer with 360° scene control |
| DE202021003793U1 (en) | 2021-12-16 | 2022-01-14 | Stefan Burghardt | 360° link control for reflection silencer |
| DE202022000229U1 (en) | 2022-01-28 | 2022-03-08 | Stefan Burghardt | Reflection silencer with 360° link control with slot |
| DE202022000300U1 (en) | 2022-02-05 | 2022-02-18 | Stefan Burghardt | Reflection silencer with 360° link control with slotted holes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20100605 |