CN101289952A - Expanding cavity adjustable exhaust silencer - Google Patents
Expanding cavity adjustable exhaust silencer Download PDFInfo
- Publication number
- CN101289952A CN101289952A CNA2008100697960A CN200810069796A CN101289952A CN 101289952 A CN101289952 A CN 101289952A CN A2008100697960 A CNA2008100697960 A CN A2008100697960A CN 200810069796 A CN200810069796 A CN 200810069796A CN 101289952 A CN101289952 A CN 101289952A
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- cavity
- stationary barrier
- partition board
- chamber
- expansion cavity
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Abstract
The invention discloses an exhaust muffler with an adjustable expanding cavity. The exhaust muffler comprises an air inlet pipe, the expanding cavity and a vent-pipe; wherein the expanding cavity comprises a cavity wall, a front-end cover and a rear-end cover; a moving clapboard, which divides the expanding cavity into a cavity I and a cavity II, is arranged inside the expanding cavity; the cavity I is communicated with the cavity II by at least one resonant hole; an air outlet of the air inlet pipe and an air inlet of the vent-pipe are arranged inside the cavity I; the moving clapboard is provided with at least one elastic pretightening force device; the pretightening force direction of the elastic pretightening force device positively faces to the cavity I. The exhaust muffler can realize self-adjustment of cavity volume and thus has the dynamic muffling effect that the muffling frequency of the muffler increases along with the increase of engine rotational speed and the muffling frequency of the muffler reduces along with the reduction of engine rotational speed, thereby realizing the low-frequency dynamic muffling. The exhaust muffler has better low-frequency muffling effect, effectively eliminates the exhaust noise, also realizes the function of damping and reducing the exhaust pressure of the expanding cavity through the movement of the moving clapboard, and has simple and compact structure.
Description
Technical field
The present invention relates to a kind of muffler, the adjustable muffler of particularly a kind of expansion cavity.
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 fixing structural parameter, and frequency of noise elimination can not automatically adjust with the variation of engine operating condition, is in passivity all the time, and engine exhaust noise is tangible characteristics of low-frequency, and changes with rotation speed change.For overcoming the above problems, number of patent application is 200580026295.9 patent applications, announcement is used to control valve and the spring element that the silencing apparatus exhaust gas inside flows, also be provided with simultaneously and be used to reduce the cooling unit that is delivered to the heat of spring from exhaust, valve is regulated automatically and is realized absorbing, decay or reduce variation in pressure in the exhaust.The advantage of this device is that cooling unit guarantees that the operating temperature of spring is minimized.But the subject matter that this device exists is to realize the low frequency noise elimination of silencing apparatus with working conditions change.
Therefore, need a kind of muffler, can automatically adjust, thereby realize that low frequency dynamically eliminates the noise, have better low frequency noise elimination effect, effectively eliminate exhaust sound with engine speed change.
Summary of the invention
In view of this, the purpose of this invention is to provide the adjustable muffler of a kind of expansion cavity, can automatically adjust with engine speed change, thereby the realization low frequency is dynamically eliminated the noise, have the effect of low frequency noise elimination preferably, effectively eliminate exhaust sound, simple and compact for structure.
For achieving the above object, the adjustable muffler of a kind of expansion cavity of the present invention, 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 moveable partition board is laterally perpendicular to the chamber wall;
Further, be provided with at least one stationary barrier parallel with moveable partition board in the described chamber I, 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;
Further, the locking device of described elasticity pretightening force 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 invention has the beneficial effects as follows: the muffler that expansion cavity of the present invention is adjustable, 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, along with increasing the silencing apparatus frequency of noise elimination, engine speed 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; Stationary barrier is set, makes whole baffler 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 present invention is further described.
Fig. 1 is the embodiment of the invention 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 embodiment of the invention two structural representations;
Fig. 5 be Fig. 4 along C-C to sectional view.
Embodiment
Embodiment one,
Fig. 1 is the embodiment of the invention 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 muffler that expansion cavity of the present invention is adjustable, 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, be provided with horizontal moveable partition board 4 in the expansion cavity 2 perpendicular to chamber wall 2c, 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, can reduce the generation of air-flow regenerated noise in the silencing apparatus, further reduces noise to external world.
Embodiment two
Fig. 4 is the embodiment of the invention 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 II 22.
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 goal of the invention.
Explanation is at last, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although the present invention 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 technological scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. muffler that expansion cavity is adjustable, 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 adjustable muffler of expansion cavity according to claim 1 is characterized in that: described moveable partition board (4) is laterally perpendicular to chamber wall (2c).
3. the adjustable muffler of expansion cavity according to claim 2 is characterized in that: 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).
4. the adjustable muffler of expansion cavity according to claim 3, 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).
5. the adjustable muffler of expansion cavity according to claim 4 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).
6. the adjustable muffler of expansion cavity according to claim 5, 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).
7. the adjustable muffler of expansion cavity according to claim 6 is characterized in that: the locking device (63) of described elasticity pretightening force device (6) is nut, snap ring or pin.
8. the adjustable muffler of expansion cavity 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) adopt the horn mouth shape.
9. according to the adjustable muffler of the described expansion cavity 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 adjustable muffler of the described expansion cavity 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 |
|---|---|---|---|
| CN2008100697960A CN101289952B (en) | 2008-06-03 | 2008-06-03 | Expanding cavity adjustable exhaust silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100697960A CN101289952B (en) | 2008-06-03 | 2008-06-03 | Expanding cavity adjustable exhaust silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101289952A true CN101289952A (en) | 2008-10-22 |
| CN101289952B CN101289952B (en) | 2011-09-21 |
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ID=40034378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100697960A Expired - Fee Related CN101289952B (en) | 2008-06-03 | 2008-06-03 | Expanding cavity adjustable exhaust silencer |
Country Status (1)
| Country | Link |
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| CN (1) | CN101289952B (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536388A (en) * | 2012-02-17 | 2012-07-04 | 安徽江淮汽车股份有限公司 | Double-mode exhaust silencer |
| CN102562242A (en) * | 2010-12-07 | 2012-07-11 | J·埃贝斯佩歇合资公司 | Housing |
| CN103821591A (en) * | 2014-03-13 | 2014-05-28 | 洛阳理工学院 | Exhaust silencer for city compact car |
| CN103835794A (en) * | 2014-03-13 | 2014-06-04 | 洛阳理工学院 | Exhaust silencer for automobiles with output volume of 2.0L |
| CN103850770A (en) * | 2014-03-25 | 2014-06-11 | 洛阳理工学院 | Exhaust silencer applied to engineering vehicle |
| CN105240089A (en) * | 2015-10-29 | 2016-01-13 | 浙江吉利汽车研究院有限公司 | Automobile silencer |
| CN106014574A (en) * | 2016-07-06 | 2016-10-12 | 珠海格力电器股份有限公司 | Silencer |
| CN106092592A (en) * | 2016-08-03 | 2016-11-09 | 安阳全丰航空植保科技股份有限公司 | Agricultural plant protection helicopter engine gas extraction system optimization Test device |
| CN109209565A (en) * | 2018-07-26 | 2019-01-15 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of adjustable noise-reducing structure and its application and application method |
| CN110094776A (en) * | 2018-01-31 | 2019-08-06 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
| CN110230532A (en) * | 2019-06-25 | 2019-09-13 | 湖州新兴汽车部件有限公司 | A kind of exhaust pipe of high-efficient noise-reducing sound |
| CN110397572A (en) * | 2019-08-28 | 2019-11-01 | 珠海格力电器股份有限公司 | Muffler, compressor and air conditioner |
| CN110686398A (en) * | 2019-09-25 | 2020-01-14 | 珠海格力电器股份有限公司 | Silencer with adjustable length and system pressure capable of being automatically adapted and air conditioner |
| CN112343689A (en) * | 2020-11-19 | 2021-02-09 | 南京工程学院 | Composite muffler with self-adaptive resonance structure |
| CN112855306A (en) * | 2021-01-11 | 2021-05-28 | 江苏中孚动力产业链有限公司 | Exhaust silencing mechanism of diesel internal combustion engine |
| CN113153506A (en) * | 2021-05-25 | 2021-07-23 | 佛吉亚(柳州)排气控制技术有限公司 | Automobile silencer structure convenient to disassemble and assemble |
| CN113357714A (en) * | 2021-07-12 | 2021-09-07 | 珠海格力电器股份有限公司 | Resonance type muffler and air conditioner |
| CN114856784A (en) * | 2022-06-21 | 2022-08-05 | 陈华清 | Motorcycle silencer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3738000B2 (en) * | 2002-10-07 | 2006-01-25 | 本田技研工業株式会社 | Valve unit for silencer |
-
2008
- 2008-06-03 CN CN2008100697960A patent/CN101289952B/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562242A (en) * | 2010-12-07 | 2012-07-11 | J·埃贝斯佩歇合资公司 | Housing |
| CN102562242B (en) * | 2010-12-07 | 2014-11-05 | J·埃贝斯佩歇合资公司 | Housing |
| CN102536388A (en) * | 2012-02-17 | 2012-07-04 | 安徽江淮汽车股份有限公司 | Double-mode exhaust silencer |
| CN103821591A (en) * | 2014-03-13 | 2014-05-28 | 洛阳理工学院 | Exhaust silencer for city compact car |
| CN103835794A (en) * | 2014-03-13 | 2014-06-04 | 洛阳理工学院 | Exhaust silencer for automobiles with output volume of 2.0L |
| CN103850770A (en) * | 2014-03-25 | 2014-06-11 | 洛阳理工学院 | Exhaust silencer applied to engineering vehicle |
| CN105240089B (en) * | 2015-10-29 | 2019-03-01 | 浙江吉利汽车研究院有限公司 | A kind of muffler of automobile |
| CN105240089A (en) * | 2015-10-29 | 2016-01-13 | 浙江吉利汽车研究院有限公司 | Automobile silencer |
| CN106014574A (en) * | 2016-07-06 | 2016-10-12 | 珠海格力电器股份有限公司 | Silencer |
| CN106014574B (en) * | 2016-07-06 | 2019-01-04 | 珠海格力电器股份有限公司 | Silencer |
| CN106092592A (en) * | 2016-08-03 | 2016-11-09 | 安阳全丰航空植保科技股份有限公司 | Agricultural plant protection helicopter engine gas extraction system optimization Test device |
| CN110094776A (en) * | 2018-01-31 | 2019-08-06 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
| CN110094776B (en) * | 2018-01-31 | 2024-02-20 | 宁波方太厨具有限公司 | Noise-reducing type range hood |
| CN109209565A (en) * | 2018-07-26 | 2019-01-15 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of adjustable noise-reducing structure and its application and application method |
| CN110230532A (en) * | 2019-06-25 | 2019-09-13 | 湖州新兴汽车部件有限公司 | A kind of exhaust pipe of high-efficient noise-reducing sound |
| CN110397572A (en) * | 2019-08-28 | 2019-11-01 | 珠海格力电器股份有限公司 | Muffler, compressor and air conditioner |
| CN110686398A (en) * | 2019-09-25 | 2020-01-14 | 珠海格力电器股份有限公司 | Silencer with adjustable length and system pressure capable of being automatically adapted and air conditioner |
| CN112343689B (en) * | 2020-11-19 | 2021-08-17 | 南京工程学院 | Composite muffler with self-adaptive resonance structure |
| CN112343689A (en) * | 2020-11-19 | 2021-02-09 | 南京工程学院 | Composite muffler with self-adaptive resonance structure |
| CN112855306B (en) * | 2021-01-11 | 2022-04-01 | 江苏中孚动力产业链有限公司 | Exhaust silencing mechanism of diesel internal combustion engine |
| CN112855306A (en) * | 2021-01-11 | 2021-05-28 | 江苏中孚动力产业链有限公司 | Exhaust silencing mechanism of diesel internal combustion engine |
| CN113153506A (en) * | 2021-05-25 | 2021-07-23 | 佛吉亚(柳州)排气控制技术有限公司 | Automobile silencer structure convenient to disassemble and assemble |
| CN113357714A (en) * | 2021-07-12 | 2021-09-07 | 珠海格力电器股份有限公司 | Resonance type muffler and air conditioner |
| CN114856784A (en) * | 2022-06-21 | 2022-08-05 | 陈华清 | Motorcycle silencer |
| CN114856784B (en) * | 2022-06-21 | 2023-10-13 | 浙江卓驰机械有限公司 | Motorcycle muffler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101289952B (en) | 2011-09-21 |
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Granted publication date: 20110921 Termination date: 20120603 |