CN103982284A - Multi-channel three-cavity silencer - Google Patents
Multi-channel three-cavity silencer Download PDFInfo
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- CN103982284A CN103982284A CN201410230565.9A CN201410230565A CN103982284A CN 103982284 A CN103982284 A CN 103982284A CN 201410230565 A CN201410230565 A CN 201410230565A CN 103982284 A CN103982284 A CN 103982284A
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Abstract
The invention discloses a multi-channel three-cavity silencer which comprises a silencer barrel body, an air inlet tube and an exhaust tube and further comprises a first cavity partition plate and a second cavity partition plate, wherein the first and second cavity partition plates divide silencer barrel body into a first cavity, a second cavity and a third cavity, the air inlet tube extends into the first cavity, the exhaust tube extends into the third cavity, a second cavity central tube crossing the cavities is arranged in the second cavity in the middle, the cavities are provided with multiple partition plates, the partition plates respectively divide the cavities into cavity groups formed by sub-cavities, and the inside of the second cavity central tube is a resistive silencing portion made of a silencing material. A fin structure is added for the multi-channel three-cavity silencer, the multi-channel three-cavity silencer is provided with the sub-cavities and the resistive silencing portion, and a combined silencing structure is formed to improve the cavity utilization rate and noise reduction effect. In addition, a metal layer of the fin structure effectively helps a silencing layer absorbing sound wave energy and enables the barrel body to effectively radiate heat.
Description
Technical field
The present invention relates to a kind of multichannel three chamber bafflers.
Background technique
In motor-driven vehicle going, can produce quite huge noise; conventionally on automobile exhaust pipe, installing baffler additional is a kind of effective noise abatement means; resistant noise-reducing is a kind of important design of muffler thinking at present; and conventionally can adopt multi-cavity cascade-connection to strengthen erasure effect; its air-flow path is single, and the noise reduction utilization ratio of cavity, noise reduction still leave some room for improvement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of multichannel three chamber bafflers, these multichannel three chamber bafflers are on the basis of basic resistant noise-reducing device, improved the structural type in resistance chamber, increased tab construction, be provided with minute chamber and resistive noise-reducing structure, form knockdown noise-reducing structure, improved chamber utilization ratio and noise reduction; The metal layer of fin helps the noise reduction layer and the cylindrical shell that have absorbed acoustic wave energy more effectively to dispel the heat effectively simultaneously.
The present invention addresses the above problem adopted technological scheme:
Comprise baffler cylindrical shell, suction tude, outlet pipe, also comprise the first chamber dividing plate, the second chamber dividing plate, described the first chamber dividing plate, the second chamber dividing plate is divided into the first chamber group by baffler cylindrical shell, the second chamber group, the 3rd chamber group, described suction tude stretches into the first chamber group, described outlet pipe stretches into the 3rd chamber group, in the second chamber group mediating, be provided with the second chamber center tube across chamber, in described each chamber group, be provided with a plurality of demarcation strips, described interlayer dividing plate connects cylinder body outer wall and the baffler cylinder inboard wall in each chamber middle part, here for statement is convenient by suction tude, outlet pipe, the second chamber center tube is all expressed as the cylindrical shell in middle part in corresponding chamber group, installation direction is that dividing plate plane is parallel with baffler cylindrical shell axial direction, described demarcation strip is divided into each chamber component by sub-chamber and forms respectively, the quantity of the sub-chamber of described chamber group is consistent with the quantity of demarcation strip, baffler cylindrical shell integral sealing,
The part that described suction tude stretches in the first chamber has several staggered suction tude exhaust ports, the part that described outlet pipe stretches in the 3rd chamber has several staggered outlet pipe inlet holes, on described the second chamber center tube, have several staggered spiracles, the resistive noise elimination part forming for quieter material in described the second chamber center tube, between the sub-chamber of described the first chamber group and the corresponding position of the second chamber group, being provided with the first chamber connecting tube group is communicated with, between the sub-chamber of described the second chamber group and the corresponding position of the 3rd chamber group, being provided with the second chamber connecting tube group is communicated with.
The principle of the basic scheme of the invention described above and effect are that this combined muffler is on the basis of basic resistant noise-reducing device, improved the structural type in resistance chamber, concrete condition is, by the first chamber dividing plate, the second chamber dividing plate is divided into three chambers by baffler, at the first chamber, in the 3rd chamber, increased the tab construction that interlayer dividing plate forms, be position and the direction setting of interlayer dividing plate in cylindrical shell, make the flow direction of air-flow integral body be: each sub-chamber that air-flow imports the first chamber group by suction tude exhaust port enters the corresponding sub-chamber of the second chamber group again by the connecting tube in each sub-chamber, in like manner by the second chamber connecting tube, export in outlet pipe and discharge again, in the process of each chamber of flowing through, acoustic wave energy is interfered the formation resistant noise-reducing basic principle that disappears mutually in a plurality of sub-chamber, the principle of resistant noise-reducing is the known basic general knowledge of related domain, while being greater than the cavity of pipe diameter for air-flow by diameter, producing incoming wave and reflected wave cancels out each other and reduces the process of noise, the the first chamber connecting tube group arranging between the sub-chamber of the corresponding position by described the first chamber group and the second chamber group, the the second chamber connecting tube group arranging between the sub-chamber of the corresponding position of described the second chamber group and the 3rd chamber group always realized on airflow path-minute-total circulation style, can be so that air-flow flowing into by suitable connecting tube diameter is set, when flowing out the second chamber, the area of sidewall and the Area Ratio of pipeline are with respect to suction tude, when outlet pipe is a pipeline, the Area Ratio of sidewall and pipeline has in a disguised form improved, the sidewall here refers to the junction surface of pipeline connexon cavity, this Area Ratio is the important parameter of resistant noise-reducing, area increased is than the actual noise reduction that is equivalent to increase in limited bulk single-unit cavity, in the second cavity the in-built resistive sound absorbing material of central cylinder on air flow path to the further resistive noise reduction of sound wave, the noise reduction through hole arranging in central cylinder helps acoustic wave energy to enter noise reduction layer to be absorbed effectively, effectively improved whole noise reduction efficacy, actual measurement noise reduction is different according to sound wave frequency range, compare the multi-cavity baffler of same volume, noise reduction can at least have more 1-2dB, in addition, it is simple in structure, stable, demarcation strip contributes to cylindrical shell more effectively to dispel the heat.
Further, the quantity of the demarcation strip in each chamber is 4.The quantity of chamber dividing plate is preferred quantity; the frequency characteristic that effective lifting of the whole noise reduction guaranteeing and making absorbs is more balanced; the dividing plate of chamber shown in figure quantity is 4; it is only a kind of mode of execution; the implementation that is easy to expect the chamber of other quantity (at least 2), all should belong to protection scope of the present invention.
Further, the first chamber dividing plate is recessed to form the first spacing convave trough with respect to baffler cylinder body outer wall, and the second chamber dividing plate is recessed to form the second spacing convave trough with respect to baffler cylinder body outer wall.Spacing convave trough is annular, and clamping of convenient test placed and installed.
Further, the quieter material of described resistive noise elimination part is flame retardant polyurethane sponge.This quieter material is fire-retardant, high temperature resistant, and when effectively promoting sound-absorbing effect, Safety performance is good.
Further, on each connecting tube of described the first chamber connecting tube group, the second chamber connecting tube group, be provided with staggered spiracle.Being provided with of spiracle is beneficial to the circulation of air-flow between cavity, and the circulation that bring in the path of avoiding detouring hinders.
Accompanying drawing explanation
Fig. 1 is the multichannel three chamber baffler embodiments' 1 of the present invention left pseudosection in A-A place;
Fig. 2 is the multichannel three chamber baffler embodiments' 1 of the present invention right pseudosection in B-B place.
Mark and corresponding component title in accompanying drawing:
The resistive noise elimination part of 10-baffler cylindrical shell 11-first chamber dividing plate 11t-first spacing convave trough 12-second chamber dividing plate 12t-second chamber groove 13-demarcation strip 21-suction tude 21t-suction tude exhaust port 22-outlet pipe 22t-outlet pipe inlet hole 23-second chamber center tube 24-first chamber connecting tube group 25-second chamber connecting tube group 26-spiracle 31-first chamber group 32-the second chamber group 33-the 3rd chamber group 40-.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is done to detailed description further, but embodiments of the present invention are not limited to this.
Embodiments of the invention 1 are, as Fig. 1, shown in Fig. 2, comprise baffler cylindrical shell 10, suction tude 21, outlet pipe 22, also comprises the first chamber dividing plate 11, the second chamber dividing plate 12, described the first chamber dividing plate, the second chamber dividing plate is divided into the first chamber group 31 by baffler cylindrical shell, the second chamber group 32, the 3rd chamber group 33, described suction tude 21 stretches into the first chamber group, described outlet pipe 22 stretches into the 3rd chamber group, in the second chamber group mediating, be provided with the second chamber center tube 23 across chamber, in described each chamber group, be provided with a plurality of demarcation strips 13, described interlayer dividing plate connects the cylindrical shell 21 in each chamber group middle part, 22, 23 outer walls and baffler cylinder inboard wall, here for statement is convenient by suction tude, outlet pipe, the second chamber center tube is all expressed as the cylindrical shell in middle part in corresponding chamber group, installation direction is that dividing plate plane is parallel with baffler cylindrical shell axial direction, described demarcation strip 13 is divided into each chamber component by sub-chamber and forms respectively, the quantity of the sub-chamber of described chamber group is determined by the quantity of demarcation strip 13, baffler cylindrical shell integral sealing
The part that described suction tude 21 stretches in the first chamber has several staggered suction tude exhaust port 21t, the part that described outlet pipe 21 stretches in the 3rd chamber has several staggered outlet pipe inlet hole 22t, on described the second chamber center tube 23, have several staggered spiracles, the resistive noise elimination part forming for quieter material in described the second chamber center tube, between the sub-chamber of described the first chamber group and the corresponding position of the second chamber group, being provided with the first chamber connecting tube group 24 is communicated with, between the sub-chamber of described the second chamber group and the corresponding position of the 3rd chamber group, being provided with the second chamber connecting tube group 25 is communicated with.
The principle of the basic scheme of the invention described above and effect are that this combined muffler is on the basis of basic resistant noise-reducing device, improved the structural type in resistance chamber, concrete condition is, by the first chamber dividing plate, the second chamber dividing plate is divided into three chambers by baffler, at the first chamber, in the 3rd chamber, increased the tab construction that interlayer dividing plate forms, be position and the direction setting of interlayer dividing plate in cylindrical shell, make the flow direction of air-flow integral body be: each sub-chamber that air-flow imports the first chamber group by suction tude exhaust port enters the corresponding sub-chamber of the second chamber group again by the connecting tube in each sub-chamber, in like manner by the second chamber connecting tube, export in outlet pipe and discharge again, in the process of each chamber of flowing through, acoustic wave energy is interfered the formation resistant noise-reducing basic principle that disappears mutually in a plurality of sub-chamber, the principle of resistant noise-reducing is the known basic general knowledge of related domain, while being greater than the cavity of pipe diameter for air-flow by diameter, producing incoming wave and reflected wave cancels out each other and reduces the process of noise, the the first chamber connecting tube group arranging between the sub-chamber of the corresponding position by described the first chamber group and the second chamber group, the the second chamber connecting tube group arranging between the sub-chamber of the corresponding position of described the second chamber group and the 3rd chamber group always realized on airflow path-minute-total circulation style, can be so that air-flow flowing into by suitable connecting tube diameter is set, when flowing out the second chamber, the area of sidewall and the Area Ratio of pipeline are with respect to suction tude, when outlet pipe is a pipeline, the Area Ratio of sidewall and pipeline has in a disguised form improved, the sidewall here refers to the junction surface of pipeline connexon cavity, this Area Ratio is the important parameter of resistant noise-reducing, area increased is than the actual noise reduction that is equivalent to increase in limited bulk single-unit cavity, in the second cavity the in-built resistive sound absorbing material of central cylinder on air flow path to the further resistive noise reduction of sound wave, the noise reduction through hole arranging in central cylinder helps acoustic wave energy to enter noise reduction layer to be absorbed effectively, effectively improved whole noise reduction efficacy, actual measurement noise reduction is different according to sound wave frequency range, compare the multi-cavity baffler of same volume, noise reduction can at least have more 1-2dB, in addition, it is simple in structure, stable, demarcation strip contributes to cylindrical shell more effectively to dispel the heat.
On embodiment 1 basis, the quantity of the demarcation strip in each chamber is 4.The quantity of chamber dividing plate is preferred quantity; the frequency characteristic that effective lifting of the whole noise reduction guaranteeing and making absorbs is more balanced; the dividing plate of chamber shown in figure quantity is 4; it is only a kind of mode of execution; the implementation that is easy to expect the chamber of other quantity (at least 2), all should belong to protection scope of the present invention.
On embodiment 1 basis, described the first chamber dividing plate is recessed to form the first spacing convave trough 11t with respect to baffler cylinder body outer wall, and described the second chamber dividing plate is recessed to form the second spacing convave trough 12t with respect to baffler cylinder body outer wall.Spacing convave trough is annular, and clamping of convenient test placed and installed.
On embodiment 1 basis, the quieter material of described resistive noise elimination part is flame retardant polyurethane sponge.This quieter material is fire-retardant, high temperature resistant, and when effectively promoting sound-absorbing effect, Safety performance is good.
On embodiment 1 basis, on each connecting tube of described the first chamber connecting tube group 24, the second chamber connecting tube group 25, be provided with staggered spiracle 26.Being provided with of spiracle is beneficial to the circulation of air-flow between cavity, and the circulation that bring in the path of avoiding detouring hinders.
As mentioned above, can realize preferably the present invention.
Claims (5)
1. multichannel three chamber bafflers, it is characterized in that, comprise baffler cylindrical shell (10), suction tude (21), outlet pipe (22), also comprise the first chamber dividing plate (11), the second chamber dividing plate (12), described the first chamber dividing plate, the second chamber dividing plate is divided into the first chamber group (31) by baffler cylindrical shell, the second chamber group (32), the 3rd chamber group (33), described suction tude (21) stretches into the first chamber group, described outlet pipe (22) stretches into the 3rd chamber group, in the second chamber group mediating, be provided with the second chamber center tube (23) across chamber, in described each chamber, be provided with a plurality of demarcation strips (13), described interlayer dividing plate connects cylinder body outer wall and the baffler cylinder inboard wall in each chamber group middle part, installation direction is that dividing plate plane is parallel with baffler cylindrical shell axial direction, described demarcation strip (13) is divided into each chamber component respectively sub-chamber and forms, the quantity of the sub-chamber of described chamber group is consistent with the quantity of demarcation strip (13),
The part that described suction tude (21) stretches in the first chamber has several staggered suction tude exhaust ports (21t), the part that described outlet pipe (21) stretches in the 3rd chamber has several staggered outlet pipe inlet holes (22t), on described the second chamber center tube (23), have several staggered noise reduction through holes, the resistive noise elimination part forming for quieter material in described the second chamber center tube, between the sub-chamber of described the first chamber group and the corresponding position of the second chamber group, being provided with the first chamber connecting tube group (24) is communicated with, between the sub-chamber of described the second chamber group and the corresponding position of the 3rd chamber group, being provided with the second chamber connecting tube group (25) is communicated with.
2. multichannel three chamber bafflers according to claim 1, are further characterized in that, the quantity of the demarcation strip in each chamber is 4.
3. multichannel three chamber bafflers according to claim 1, be further characterized in that, described the first chamber dividing plate is recessed to form the first spacing convave trough (11t) with respect to baffler cylinder body outer wall, and described the second chamber dividing plate is recessed to form the second spacing convave trough (12t) with respect to baffler cylinder body outer wall.
4. multichannel three chamber bafflers according to claim 1, are further characterized in that, the quieter material of described resistive noise elimination part is flame retardant polyurethane sponge.
5. multichannel three chamber bafflers according to claim 1, are further characterized in that, on each connecting tube of described the first chamber connecting tube group (24), the second chamber connecting tube group (25), are provided with staggered spiracle (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410230565.9A CN103982284B (en) | 2014-05-28 | 2014-05-28 | Multichannel three chamber baffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410230565.9A CN103982284B (en) | 2014-05-28 | 2014-05-28 | Multichannel three chamber baffler |
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| Publication Number | Publication Date |
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| CN103982284A true CN103982284A (en) | 2014-08-13 |
| CN103982284B CN103982284B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410230565.9A Expired - Fee Related CN103982284B (en) | 2014-05-28 | 2014-05-28 | Multichannel three chamber baffler |
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Cited By (5)
| 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 |
| CN109386346A (en) * | 2018-12-24 | 2019-02-26 | 重庆凯罗尔机械配件有限公司 | A kind of baffle assembly of muffler |
| CN109394018A (en) * | 2017-08-18 | 2019-03-01 | 美的集团股份有限公司 | Base assembly and cooking machine |
| CN111145710A (en) * | 2019-12-26 | 2020-05-12 | 连云港江海机械设备制造有限公司 | Impedance composite muffler |
| CN113417729A (en) * | 2021-07-09 | 2021-09-21 | 保蓝行(福建)环保技术研究院有限责任公司 | Exhaust emission purifier |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2277975A1 (en) * | 1974-07-09 | 1976-02-06 | Eberspaecher J | Silencer for multi cylinder IC engine - has pipe into inlet chamber next to outlet chamber with tube through damping material |
| CN2809234Y (en) * | 2005-07-27 | 2006-08-23 | 林辉江 | Exhaust muffler for diesel engine of railway passenger car with air conditioner |
| CN202165141U (en) * | 2011-07-12 | 2012-03-14 | 江苏道康发电机组有限公司 | Impedance composite low noise silencer for generator set |
| CN103321716A (en) * | 2013-07-08 | 2013-09-25 | 山东大学 | Reactive muffler structure with combination of perforated pipes and narrow-slit resonant cavities |
| CN203925671U (en) * | 2014-05-28 | 2014-11-05 | 成都陵川特种工业有限责任公司 | Symmetric type three chamber bafflers |
-
2014
- 2014-05-28 CN CN201410230565.9A patent/CN103982284B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2277975A1 (en) * | 1974-07-09 | 1976-02-06 | Eberspaecher J | Silencer for multi cylinder IC engine - has pipe into inlet chamber next to outlet chamber with tube through damping material |
| CN2809234Y (en) * | 2005-07-27 | 2006-08-23 | 林辉江 | Exhaust muffler for diesel engine of railway passenger car with air conditioner |
| CN202165141U (en) * | 2011-07-12 | 2012-03-14 | 江苏道康发电机组有限公司 | Impedance composite low noise silencer for generator set |
| CN103321716A (en) * | 2013-07-08 | 2013-09-25 | 山东大学 | Reactive muffler structure with combination of perforated pipes and narrow-slit resonant cavities |
| CN203925671U (en) * | 2014-05-28 | 2014-11-05 | 成都陵川特种工业有限责任公司 | Symmetric type three chamber bafflers |
Cited By (6)
| 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 |
| CN109394018A (en) * | 2017-08-18 | 2019-03-01 | 美的集团股份有限公司 | Base assembly and cooking machine |
| CN109386346A (en) * | 2018-12-24 | 2019-02-26 | 重庆凯罗尔机械配件有限公司 | A kind of baffle assembly of muffler |
| CN111145710A (en) * | 2019-12-26 | 2020-05-12 | 连云港江海机械设备制造有限公司 | Impedance composite muffler |
| CN113417729A (en) * | 2021-07-09 | 2021-09-21 | 保蓝行(福建)环保技术研究院有限责任公司 | Exhaust emission purifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103982284B (en) | 2016-02-10 |
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