CN104948263A - Expansion and resonance compound type silencer - Google Patents

Expansion and resonance compound type silencer Download PDF

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Publication number
CN104948263A
CN104948263A CN201510330748.2A CN201510330748A CN104948263A CN 104948263 A CN104948263 A CN 104948263A CN 201510330748 A CN201510330748 A CN 201510330748A CN 104948263 A CN104948263 A CN 104948263A
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China
Prior art keywords
chamber
dividing plate
sleeve
length
stretches
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CN201510330748.2A
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Chinese (zh)
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CN104948263B (en
Inventor
王晓明
梁天将
孟令超
李晓枫
王振清
李凯
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Technology Branch of XCMG Engineering Machinery Co Ltd
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Technology Branch of XCMG Engineering Machinery Co Ltd
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Priority to CN201510330748.2A priority Critical patent/CN104948263B/en
Publication of CN104948263A publication Critical patent/CN104948263A/en
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Publication of CN104948263B publication Critical patent/CN104948263B/en
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Abstract

The invention discloses an expansion and resonance compound type silencer which comprises a sleeve. One end of the sleeve is sealed and inserted in an air inlet pipe in the radial direction, and an air outlet pipe is axially arranged at the other end of the sleeve. Four partition plates are sequentially parallelly arranged in the sleeve to divide the inside of the sleeve into five chambers. An inner insertion pipe extends into the third chamber from the first chamber, a perforated pipe extends into the second chamber from the third chamber and is sealed through a first partition plate, a middle pipe extends into the fourth chamber through the second chamber, and a resonant cavity insertion pipe extends into the fifth chamber from the fourth chamber. A side wall of the air inlet pipe is provided with a plurality of first through holes, and the area of a side wall of the perforated pipe located in the second chamber is provided with a plurality of second through holes. The expansion and resonance compound type silencer is reasonably combined through expansion and resonance, the high frequency silencing effect is considered while the low-frequency and medium-frequency noises of air flow are greatly reduced, the high silencing amount and a wide silencing frequency band are obtained, exhaust noises are effectively reduced; and the expansion and resonance compound type silencer is small in pressure loss, has a small influence on engine power loss, is reasonable in design and has good application prospect.

Description

A kind of expansion resonance composite muffler
Technical field
The present invention relates to vibration and noise reducing field, specifically a kind of expansion resonance composite muffler of engineering machinery.
Background technique
Silencing apparatus is arranged on engine exhaust pipe, and Main Function reduces the exhaust sound of motor, to reduce the sound radiation of operator cabin driver parotic noise and environment to external world, effectively reduces exhaust sound, alleviates the environmental pollution of noise, improve operation comfort.
Owing to being subject to the restriction of engineering machinery vehicle installing space, in existing diesel engine exhaust muffler design, be the sound deadening capacity obtained, general internal structure all more complicated, exhaust back pressure is large, and cause engine power loss comparatively large, fuel consumption is large, befouling environment.Construction machinery industry is also stricter to the requirement of noise limit, the noise that motor produces accounts for a big chunk that complete machine produces noisiness, thus the effect of silencing apparatus is extremely important, but existing silencing apparatus low-frequency noise noise reduction is generally undesirable, and Low Medium Frequency noise is the Main Noise Sources of complete machine.Therefore need to design the silencing apparatus that a sound deadening capacity is large, exhaust back pressure is little, while guarantee does not reduce engine power, significantly improve the design proposal of silencing apparatus medium and low frequency section acoustic attenuation performance.
Summary of the invention
The object of the invention is for Problems existing in existing industrial diesel engine silencing apparatus, overcome above-mentioned deficiency, when providing a kind of sound transmission to lose Datong District, power loss is little, the one expansion resonance composite muffler of vehicle installing space can be met again, reduce the environmental pollution of noise, to improve driver's operation travelling comfort.
In order to solve prior art problem, realize above-mentioned purpose, the technical solution used in the present invention is: comprise the sleeve that one end is closed, and the sleeve the other end axially arranges a steam outlet pipe (12);
The inside of sleeve arranges dividing plate I (3), dividing plate II (5), dividing plate III (7) and dividing plate IV (9) by one end successively abreast to the other end, by dividing plate I (3), dividing plate II (5), dividing plate III (7) and dividing plate IV (9), the inside of sleeve is divided into the first chamber (2), the second chamber (4), the 3rd chamber (6), the 4th chamber (15) and the 5th chamber (13) successively;
Interpolation pipe (20) stretches to the 3rd chamber (6) by the first chamber (2), perforated pipe (18) stretches to the second chamber (4) by the 3rd chamber (6) and is closed by dividing plate I (3), intervalve (8) stretches to the 4th chamber (15) by the second chamber (4), and the resonant cavity Inserting Tube (10) coaxial with intervalve (8) stretches to the 5th chamber (13) by the 4th chamber (15);
Suction tude (1) radially stretches in the first chamber (2) in sleeve, and suction tude (1) sidewall is provided with multiple through hole I (21);
Region perforated pipe (18) sidewall being positioned at the second chamber (4) inner is provided with multiple through hole II(19).
Interpolation pipe (20) and dividing plate I (3), dividing plate II (5) link together; Interpolation pipe (20) entrance stretches in the first chamber (2) through dividing plate I (3), exports and stretches in the 3rd chamber (6) through dividing plate II (5), and the outlet length stretched in the 3rd chamber (6) is 1/2 of the 3rd chamber (6) length.
Perforated pipe (18) quantity is 1, links together with dividing plate I (3), dividing plate II (5), and entrance is 1/3 of the 3rd chamber (6) length through dividing plate II (5) length stretched in the 3rd chamber (6).
Intervalve (8) is through dividing plate II (5) and dividing plate III (7) and link together with dividing plate II (5), dividing plate III (7), the length that entrance stretches to the second chamber (4) through dividing plate II (5) is 1/9 of the second chamber (4) length, and exporting the length stretching to the 4th chamber (15) through dividing plate III (7) is 1/2 of the 4th chamber (15) length.
Resonant cavity Inserting Tube (10) and dividing plate IV (9) link together, and the length that entrance stretches to the 4th chamber (15) is 1/6 of the 4th chamber (15) length, and the length that outlet stretches to the 5th chamber (13) is 1/2 of the 5th chamber (13) length.
Described intervalve (8) and resonant cavity Inserting Tube (10) are multiple and one_to_one corresponding, are circumferentially uniformly distributed.
Described perforated pipe (18) quantity is 1, is positioned on the central shaft of sleeve.
Described interpolation pipe (20), for multiple, is circumferentially uniformly distributed.
Described dividing plate I (3), dividing plate II (5), dividing plate III (7) and dividing plate IV (9) are all arranged along the radial direction of sleeve, are connected to a fixed with sleeve lining.
Described sleeve comprises urceolus (11) and inner core (22), is filled with thermal-protective material (17) between urceolus (11) and inner core (22), and minimizing heat imports engine compartment into from urceolus and causes temperature in cabin too high.
The air-flow of being discharged by motor enters successively by the first chamber, the 3rd chamber, the second chamber and the 4th chamber after suction tude, and fraction enters the 5th chamber and forms resonance, realizes the reduction of exhaust sound, is finally discharged by steam outlet pipe.First chamber, the second chamber are perforation expansion cavity, rely on the friction around air-flow and hole to consume high-frequency sound energy; 3rd chamber and the 4th chamber are conventional expansion chamber, rely on pipeline section suddenly change the reflection that causes and interfere reduction exhaust sound; 5th chamber is resonant cavity, forms Helmholz resonance chamber by Inserting Tube and the 4th chamber, by a large amount of acoustic energy of resonance absorption, thus reduces low frequency exhaust noise.
Beneficial effect is: silencing apparatus of the present invention is by expansion and resonance form reasonable combination, significantly reduce air-flow and take into account high frequency soundproof effect while Low Medium Frequency noise, obtain larger sound deadening capacity and wider deadening frequency band, effective reduction exhaust sound, this structural pressure loss is simultaneously less, less on the impact of engine power loss, reasonable in design, there is good application prospect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is structural upright structural drawing of the present invention.
In figure: 1, suction tude; 2, the first chamber; 3, dividing plate I; 4, the second chamber; 5, dividing plate II; 6, the 3rd chamber; 7, dividing plate III; 8, intervalve; 9, dividing plate IV; 10, resonant cavity Inserting Tube; 11, urceolus; 12, steam outlet pipe; 13, the 5th chamber; 14, resonant cavity Inserting Tube; 15, the 4th chamber; 16, intervalve; 17, thermal-protective material; 18, perforated pipe; 19, through hole II; 20, interpolation pipe; 21, through hole I; 22, inner core; 23, outer end cap; 24, inner end cap.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2: a kind of impedance composite muffler of the present invention, comprise urceolus 11, inner core 22, outer end cap 23, inner end cap 24, suction tude 1, steam outlet pipe 12, dividing plate I 3, dividing plate II 5, dividing plate III 7, dividing plate IV 9, perforated pipe 18, intervalve 8,16, resonant cavity Inserting Tube 10,14, interpolation pipe 20 etc.
It is outside that urceolus 11 is sheathed on inner core 22, and coaxial with inner core 22, is filled with thermal-protective material 17 between urceolus 11 and inner core 22.
Urceolus 11 is closed by outer end cap 23 and inner end cap 24 respectively with one end of inner core 22, and is provided with at this end and radially stretches into inner core 22 and to go directly the suction tude 1 of inner core 22 inwall, and the other end axially arranges a steam outlet pipe 12.
The inside of inner core 22 arranges dividing plate I 3, dividing plate II 5, dividing plate III 7, dividing plate IV 9 by one end successively abreast to the other end, by dividing plate I 3, dividing plate II 5, dividing plate III 7, dividing plate IV 9, the inside of inner core 22 is divided into the first chamber 2, second chamber 4, the 3rd chamber 6, the 4th chamber 15 and the 5th chamber 13 successively.Dividing plate I 3, dividing plate II 5, dividing plate III 7, dividing plate IV 9 are all arranged along the radial direction of inner core 22, are connected to a fixed with inner core 22 inwall.
Suction tude 1 stretches in the first chamber 2, suction tude 1 inner hollow, and region sidewall being positioned at the first chamber 2 inside offers multiple equally distributed long-round-shape through hole I 21.
The entry end of steam outlet pipe 12 stretches in the 4th chamber 15, and outlet end extends to the outside of inner core 22 and urceolus 11.
Described interpolation pipe 20 is several, inner hollow, through dividing plate I 3, dividing plate II 5, and weld together with dividing plate I 3, dividing plate II 5, entrance stretches in the first chamber 2 through dividing plate I 3, outlet stretches in the 3rd chamber 6 through dividing plate II 5, and be circumferentially uniformly distributed, the outlet length that interpolation pipe 20 stretches into the 3rd chamber 6 is about 1/2 of the 3rd chamber 6 length.
Described perforated pipe 18 quantity is 1, inner hollow, through dividing plate II 5, and weld together with dividing plate I 3, dividing plate II 5, entrance is about 1/3 of the 3rd chamber length through dividing plate II 5 length stretched in the 3rd chamber 6, and outlet end to be welded on dividing plate I 3 and to be formed by dividing plate I 3 closed.The region that perforated pipe 18 sidewall is positioned at the second chamber 4 inside offers multiple oblong through hole II 19, and through hole II 19 arranges along perforated pipe 18 even circumferential.Preferably, perforated pipe 18 is coaxial with inner core 22, is arranged in circle that multiple interpolation pipe 20 surrounds in the heart.
Described intervalve 8,16 is multiple, inner hollow, through dividing plate II 5, dividing plate III 7 welding together with dividing plate II 5, dividing plate III 7, circumferentially be uniformly distributed, the length that entrance stretches to the second chamber 4 through dividing plate II 5 is about 1/4 of the second chamber length, and exporting the length stretching to the 4th chamber 15 through dividing plate III 7 is about 1/2 of the 4th chamber 15 length.
Described resonant cavity Inserting Tube 10,14 is multiple, inner hollow, to weld together with dividing plate IV 9 through dividing plate IV 9, circumferentially be uniformly distributed, and it is corresponding coaxial one by one with multiple intervalve 8,16, the length that entrance stretches to the 4th chamber 15 is about 1/4 of the 4th chamber 15 length, and the length that outlet stretches to the 5th chamber 13 is about 1/2 of the 5th chamber 13 length.Preferably, the diameter of resonant cavity Inserting Tube 10,14 is less than the diameter of intervalve 8,16.
After the air-flow of being discharged by motor enters suction tude 1, the first chamber 2 is entered by the through hole I 21 in suction tude 1, the 3rd chamber 6 is entered by interpolation pipe 20, the through hole II 19 of perforated pipe 18 is turned back and is entered the second chamber 4, the 4th chamber 15 is entered through intervalve 8,16, partial air enters the 5th chamber 13 from the 4th chamber 15 through resonant cavity Inserting Tube 10,14 and forms resonance, and realize the reduction of exhaust sound, in last 4th chamber 15, remaining air is discharged by steam outlet pipe 12.
As mentioned above, plan content given by reference to the accompanying drawings, can derive similar technological scheme, as changed slotted hole into circular hole etc.In every case be the content not departing from technical solution of the present invention, any simple modification done above embodiment according to technical spirit of the present invention, dimensional changes, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.

Claims (10)

1. an expansion resonance composite muffler, is characterized in that,
Comprise the sleeve that one end is closed, the sleeve the other end axially arranges a steam outlet pipe (12);
The inside of sleeve arranges dividing plate I (3), dividing plate II (5), dividing plate III (7) and dividing plate IV (9) by one end successively abreast to the other end, by dividing plate I (3), dividing plate II (5), dividing plate III (7) and dividing plate IV (9), the inside of sleeve is divided into the first chamber (2), the second chamber (4), the 3rd chamber (6), the 4th chamber (15) and the 5th chamber (13) successively;
Interpolation pipe (20) stretches to the 3rd chamber (6) by the first chamber (2), perforated pipe (18) stretches to the second chamber (4) by the 3rd chamber (6) and is closed by dividing plate I (3), intervalve (8) stretches to the 4th chamber (15) by the second chamber (4), and the resonant cavity Inserting Tube (10) coaxial with intervalve (8) stretches to the 5th chamber (13) by the 4th chamber (15);
Suction tude (1) radially stretches in the first chamber (2) in sleeve, and suction tude (1) sidewall is provided with multiple through hole I (21);
Region perforated pipe (18) sidewall being positioned at the second chamber (4) inner is provided with multiple through hole II(19).
2. one expansion resonance composite muffler according to claim 1, it is characterized in that, interpolation pipe (20) and dividing plate I (3), dividing plate II (5) link together; Interpolation pipe (20) entrance stretches in the first chamber (2) through dividing plate I (3), exports and stretches in the 3rd chamber (6) through dividing plate II (5), and the outlet length stretched in the 3rd chamber (6) is 1/2 of the 3rd chamber (6) length.
3. the one expansion resonance composite muffler according to claim 1,2, it is characterized in that, perforated pipe (18) quantity is 1, link together with dividing plate I (3), dividing plate II (5), entrance is 1/3 of the 3rd chamber (6) length through dividing plate II (5) length stretched in the 3rd chamber (6).
4. one expansion resonance composite muffler according to claim 1, it is characterized in that, intervalve (8) is through dividing plate II (5) and dividing plate III (7) and link together with dividing plate II (5), dividing plate III (7), the length that entrance stretches to the second chamber (4) through dividing plate II (5) is 1/9 of the second chamber (4) length, and exporting the length stretching to the 4th chamber (15) through dividing plate III (7) is 1/2 of the 4th chamber (15) length.
5. the one expansion resonance composite muffler according to claim 1,4, it is characterized in that, resonant cavity Inserting Tube (10) and dividing plate IV (9) link together, the length that entrance stretches to the 4th chamber (15) is 1/6 of the 4th chamber (15) length, and the length that outlet stretches to the 5th chamber (13) is 1/2 of the 5th chamber (13) length.
6. one expansion resonance composite muffler according to claim 1, it is characterized in that, described intervalve (8) and resonant cavity Inserting Tube (10) are multiple and one_to_one corresponding, are circumferentially uniformly distributed.
7. one expansion resonance composite muffler according to claim 1, it is characterized in that, described perforated pipe (18) quantity is 1, is positioned on the central shaft of sleeve.
8. one expansion resonance composite muffler according to claim 1, it is characterized in that, described interpolation pipe (20), for multiple, is circumferentially uniformly distributed.
9. one expansion resonance composite muffler according to claim 1, it is characterized in that, described dividing plate I (3), dividing plate II (5), dividing plate III (7) and dividing plate IV (9) are all arranged along the radial direction of sleeve, are connected to a fixed with sleeve lining.
10. one expansion resonance composite muffler according to claim 1, it is characterized in that, described sleeve comprises urceolus (11) and inner core (22), is filled with thermal-protective material (17) between urceolus (11) and inner core (22).
CN201510330748.2A 2015-06-16 2015-06-16 One kind expansion resonance composite muffler Active CN104948263B (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106481420A (en) * 2016-05-09 2017-03-08 徐工集团工程机械有限公司 Silencer, engine and engineering mechanical device
CN106801637A (en) * 2017-03-02 2017-06-06 力帆实业(集团)股份有限公司 Motorcycle boxlike silencer
CN107701264A (en) * 2017-11-25 2018-02-16 华东交通大学 A kind of integral exhaust purifying muffler for being used to improve sound quality
CN108974305A (en) * 2018-06-27 2018-12-11 中国船舶重工集团公司第七〇九研究所 Runner between a kind of side of a ship of resonant silencing
CN110359981A (en) * 2019-07-19 2019-10-22 江苏徐工工程机械研究院有限公司 Silencer and the internal-combustion engine vehicle and its noise elimination control method for using silencer
CN110469384A (en) * 2019-09-10 2019-11-19 重庆宗申通用动力机械有限公司 A kind of mute muffler for motor

Citations (6)

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Publication number Priority date Publication date Assignee Title
JP2000303821A (en) * 1999-04-21 2000-10-31 Hino Motors Ltd Exhaust muffler
CN201474756U (en) * 2009-09-08 2010-05-19 博浪柯(浙江)机电制造有限公司 Single-row gas pipe muffler for diesel generator
CN202338373U (en) * 2011-12-19 2012-07-18 衡水威格橡塑金属制品有限公司 Environment-friendly silencer of heavy-duty vehicle
CN102889115A (en) * 2012-10-12 2013-01-23 徐工集团工程机械股份有限公司科技分公司 Internal combustion engine silencer and internal combustion engine
CN203067061U (en) * 2013-02-01 2013-07-17 浙江工贸职业技术学院 Gasoline engine exhaust silencer
CN204877594U (en) * 2015-06-16 2015-12-16 徐工集团工程机械股份有限公司科技分公司 Compound silencer of expansion resonance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000303821A (en) * 1999-04-21 2000-10-31 Hino Motors Ltd Exhaust muffler
CN201474756U (en) * 2009-09-08 2010-05-19 博浪柯(浙江)机电制造有限公司 Single-row gas pipe muffler for diesel generator
CN202338373U (en) * 2011-12-19 2012-07-18 衡水威格橡塑金属制品有限公司 Environment-friendly silencer of heavy-duty vehicle
CN102889115A (en) * 2012-10-12 2013-01-23 徐工集团工程机械股份有限公司科技分公司 Internal combustion engine silencer and internal combustion engine
CN203067061U (en) * 2013-02-01 2013-07-17 浙江工贸职业技术学院 Gasoline engine exhaust silencer
CN204877594U (en) * 2015-06-16 2015-12-16 徐工集团工程机械股份有限公司科技分公司 Compound silencer of expansion resonance

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106481420A (en) * 2016-05-09 2017-03-08 徐工集团工程机械有限公司 Silencer, engine and engineering mechanical device
CN106481420B (en) * 2016-05-09 2019-08-23 徐工集团工程机械有限公司 Silencer, engine and engineering mechanical device
CN106801637A (en) * 2017-03-02 2017-06-06 力帆实业(集团)股份有限公司 Motorcycle boxlike silencer
CN106801637B (en) * 2017-03-02 2022-11-22 力帆实业(集团)股份有限公司 Box type silencer for motorcycle
CN107701264A (en) * 2017-11-25 2018-02-16 华东交通大学 A kind of integral exhaust purifying muffler for being used to improve sound quality
CN107701264B (en) * 2017-11-25 2023-12-19 华东交通大学 Integrated exhaust purification muffler for improving sound quality
CN108974305A (en) * 2018-06-27 2018-12-11 中国船舶重工集团公司第七〇九研究所 Runner between a kind of side of a ship of resonant silencing
CN110359981A (en) * 2019-07-19 2019-10-22 江苏徐工工程机械研究院有限公司 Silencer and the internal-combustion engine vehicle and its noise elimination control method for using silencer
CN110359981B (en) * 2019-07-19 2023-08-01 江苏徐工工程机械研究院有限公司 Muffler, internal combustion engine vehicle using the same, and method of controlling noise elimination thereof
CN110469384A (en) * 2019-09-10 2019-11-19 重庆宗申通用动力机械有限公司 A kind of mute muffler for motor

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