CN103352738A - Silencer - Google Patents
Silencer Download PDFInfo
- Publication number
- CN103352738A CN103352738A CN201310315885XA CN201310315885A CN103352738A CN 103352738 A CN103352738 A CN 103352738A CN 201310315885X A CN201310315885X A CN 201310315885XA CN 201310315885 A CN201310315885 A CN 201310315885A CN 103352738 A CN103352738 A CN 103352738A
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- China
- Prior art keywords
- arm
- dividing plate
- anechoic chamber
- partition
- cylindrical shell
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a silencer which comprises a barrel body and two core bodies arranged in the barrel body. The core bodies comprise branch pipes A, branch pipes B, branch pipes C, first separating plates, second separating plates and third separating plates, the first separating plates and the end portion of the barrel body form a first silencer chamber, the first separating plates, the second separating plates and the barrel body form a second silencer chamber, and the second separating plates, the third separating plates and the barrel body form a third silencer chamber. The branch pipes A penetrate through the first separating plates, the second separating plates, the third separating plates and the end portion of the barrel body, the branch pipes B penetrate through the second separating plates and the third separating plates, and the branch pipes C penetrate through the second separating plates and the third separating plates. A plurality of air vents are formed in the portions, located in the first silencer chamber and the second silencer chamber, of the branch pipes A, and a plurality of air vents are formed in the portions, located in the third silencer chamber, of the branch pipes B and of the branch pipes C. The branch pipes A in the two core bodies are communicated with each other, the branch pipes B in the two core bodies are communicated with each other, and the branch pipes C in the two core bodies are communicated with each other.
Description
Technical field
The present invention relates to the engine exhaust muffler field, specifically refer to a kind of baffler.
Background technique
The automobile exhaust noise mainly is comprised of periodicity exhaust sound, end flow noise and air column resonance noise.For some single-cylinder engines, the resonance noise that cylinder and outlet pipe form is topmost noise source.Owing to engine exhaust port periodically the noise that excites of the periodic pressure that produces of opening and closing claim periodically exhaust sound, also be topmost composition in the exhaust sound.
Relief opening at motor arranges silencing apparatus, is a preferably measure that solves noise.The dissipative muffler of mainly using on the market at present, can only process the noise of high frequency individually, Applicable scope is wideless, and with regard to dissipative muffler: at high temperature, water vapour and sound-absorbing material is had in the gas of corrosive action, the working life of silencing apparatus is short, to the low-frequency noise weak effect; Maximum drawback is exactly that the silencing apparatus power loss is excessive.
Summary of the invention
The present invention abates the noise by a kind of baffler being set, reaching, and increases the purpose of the Applicable scope of baffler.
Purpose of the present invention reaches by the following technical programs:
The present invention includes cylindrical shell and be arranged on two interior core bodys of cylindrical shell; Described core body comprises arm A, arm B, arm C, the first dividing plate, second partition and the 3rd dividing plate, common formation the first anechoic chamber, the end of the first dividing plate and cylindrical shell, the first dividing plate, second partition and cylindrical shell consist of the second anechoic chamber, second partition, the 3rd dividing plate and cylindrical shell consist of the 3rd anechoic chamber, arm A runs through the first dividing plate, second partition, the end of the 3rd dividing plate and cylindrical shell, arm B runs through second partition and the 3rd dividing plate, arm C runs through second partition and the 3rd dividing plate, arm A is positioned on the position of the first anechoic chamber and the second anechoic chamber and offers a plurality of air holes, arm B and arm C are positioned on the position of the 3rd anechoic chamber and offer a plurality of air holes, arm A in two core bodys is interconnected, arm B in two core bodys is interconnected, and the arm C in two core bodys is interconnected.The relief opening of motor links to each other with cylindrical shell, and the air-flow that produces in the motor enters in the cylinder by relief opening.In first core body, when the sound wave of various frequency contents enters arm A in the air-flow, only have near the sound wave of the minority frequency of first air hole natural frequency to arrive arm B and arm C by air hole, the sound wave of minority frequency then can not pass through air hole in addition, can only be in common the first anechoic chamber internal reflection that consists of in the end of the first dividing plate and cylindrical shell;
Because the first anechoic chamber is identical with the noise reduction handling principle of the second anechoic chamber, the 3rd anechoic chamber, so passing through the sound wave of the minority frequency of arm A continues by the second anechoic chamber, the 3rd anechoic chamber, after processing layer by layer, noise reduction by second core body is processed again, and the noise in the air-flow makes airflow diversion by multichannel, again by each minute air-flow mutually impact, air-flow velocity is slowed down, through repeatedly such process, until air-flow flows out by exhaust outlet, reach good noise reduction purpose.
Further, described arm A is positioned on the position of the first anechoic chamber and the second anechoic chamber and is provided with the inverted triangle guiding gutter, and described arm B is positioned on the position of the 3rd anechoic chamber and is provided with the inverted triangle guiding gutter.The inverted triangle guiding gutter that arranges can guide the sound wave that passes air hole to enter into fast in the next anechoic chamber, can play the effect of accelerating noise reduction in level sound proof chamber processing procedure.
Further, as preferably, described the first dividing plate, second partition and the 3rd dividing plate are ellipse.The changes of section amount that air-flow passes through is larger, reduces air pressure and air-flow velocity is quicker, so when air-flow entered in the cylindrical shell by relief opening, the shape of dividing plate was near the arm A and the of circular two sound proof chambers, its cross section is larger, and erasure effect is more obvious.
Further, as preferably, the diameter of described air hole is less than 1 ㎜.When air-flow when the air hole, the frequency spectrum of jet noise will shift to high frequency or ultra-high frequency, the audible sound composition in the frequency spectrum is obviously reduced, thereby reduces interference and injury to the people; When the diameter of air hole is excessive, cause the penetration rate of air hole itself to become large, so that the sound wave of each frequency mixes, the anechoic chamber does not have the effect of noise reduction.
Further, as preferably, described arm A, arm and arm C diameter are 20～35 ㎜.The arm of different tube diameters goes for various motor, has improved applicability.
The present invention compared with prior art, have following advantage and a beneficial effect:
1, the present invention includes cylindrical shell and be arranged on two core bodys in the cylindrical shell; Described core body comprises arm A, arm B, arm C, the first dividing plate, second partition and the 3rd dividing plate, common formation the first anechoic chamber, the end of the first dividing plate and cylindrical shell, the first dividing plate, second partition and cylindrical shell consist of the second anechoic chamber, second partition, the 3rd dividing plate and cylindrical shell consist of the 3rd anechoic chamber, arm A runs through the first dividing plate, second partition, the end of the 3rd dividing plate and cylindrical shell, arm B runs through second partition and the 3rd dividing plate, arm C runs through second partition and the 3rd dividing plate, arm A is positioned on the position of the first anechoic chamber and the second anechoic chamber and offers a plurality of air holes, arm B and arm C are positioned on the position of the 3rd anechoic chamber and offer a plurality of air holes, arm A in two core bodys is interconnected, arm B in two core bodys is interconnected, and the arm C in two core bodys is interconnected.Noise in the air-flow makes airflow diversion by multichannel, again by each minute air-flow mutually impact, air-flow velocity is slowed down, through repeatedly such process, until air-flow flows out by exhaust outlet, reach good noise reduction purpose.
2, the inverted triangle guiding gutter of setting of the present invention can guide the sound wave that passes air hole to enter into fast in the next anechoic chamber, can play the effect of accelerating noise reduction in level sound proof chamber processing procedure.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of cylindrical shell;
Wherein, the component title that reference character is corresponding is as follows:
1-arm A, 2-arm B, 3-arm C, 4-the first dividing plate, 5-second partition, 6 the 3rd dividing plates, 7-air hole, 8-cylindrical shell.
Embodiment
As depicted in figs. 1 and 2, present embodiment comprises cylindrical shell 8 and two core bodys that are arranged in the cylindrical shell 8; Described core body comprises arm A1, arm B2, arm C3, the first dividing plate 4, second partition 5 and the 3rd dividing plate 6, the first dividing plate 4 consists of the first anechoic chamber jointly with the end of cylindrical shell 8, the first dividing plate 4, second partition 5 consists of the second anechoic chamber with cylindrical shell 8, second partition 5, the 3rd dividing plate 6 consists of the 3rd anechoic chamber with cylindrical shell 8, arm A1 runs through the first dividing plate 4, second partition 5, the end of the 3rd dividing plate 6 and cylindrical shell 8, arm B2 runs through second partition 5 and the 3rd dividing plate 6, arm C3 runs through second partition 5 and the 3rd dividing plate 6, arm A1 is positioned on the position of the first anechoic chamber and the second anechoic chamber and offers a plurality of air holes 7, arm B2 and arm C3 are positioned on the position of the 3rd anechoic chamber and offer a plurality of air holes 7, arm A1 in two core bodys is interconnected, arm B2 in two core bodys is interconnected, and the arm C3 in two core bodys is interconnected.The relief opening of motor links to each other with cylindrical shell 8, and the air-flow that produces in the motor enters in the cylinder by relief opening.In first core body, when the sound wave of various frequency contents enters arm A1 in the air-flow, only have near the sound wave of the minority frequency of first air hole 7 natural frequencys could pass through air hole 7 arrival arm B2 and arm C3, the sound wave of other frequency then can not pass through air hole 7, can only be in the first dividing plate 4 and common the first anechoic chamber internal reflection that consists of in the end of cylindrical shell 8;
Because the first anechoic chamber is identical with the noise reduction handling principle of the second anechoic chamber, the 3rd anechoic chamber, so passing through the sound wave of the minority frequency of arm A1 continues by the second anechoic chamber, the 3rd anechoic chamber, after processing layer by layer, noise reduction by second core body is processed again, and the noise in the air-flow makes airflow diversion by multichannel, again by each minute air-flow mutually impact, air-flow velocity is slowed down, through repeatedly such process, until air-flow flows out by exhaust outlet, reach good noise reduction purpose.
As shown in Figure 1, present embodiment is on embodiment 1 basis, and described arm A1 is positioned on the position of the first anechoic chamber and the second anechoic chamber and is provided with the inverted triangle guiding gutter, and described arm B2 is positioned on the position of the 3rd anechoic chamber and is provided with the inverted triangle guiding gutter.The inverted triangle guiding gutter that arranges can guide the sound wave that passes air hole 7 to enter into fast in the next anechoic chamber, can play the effect of accelerating noise reduction in level sound proof chamber processing procedure.
As preferably, described the first dividing plate 4, second partition 5 and the 3rd dividing plate 6 are ellipse.The changes of section amount that air-flow passes through is larger, reduces air pressure and air-flow velocity is quicker, so enter into cylindrical shell 8 when interior at air-flow by relief opening, the shape of dividing plate is near circle, and its cross section is larger, and erasure effect is more obvious.
As preferably, the diameter of described air hole 7 is less than 1 ㎜.When air-flow when the air hole 7, the frequency spectrum of jet noise will shift to high frequency or ultra-high frequency, the audible sound composition in the frequency spectrum is obviously reduced, thereby reduces interference and injury to the people; When the diameter of air hole 7 is excessive, cause air hole 7 penetration rates own to become large, so that the sound wave of each frequency mixes, the anechoic chamber does not have the effect of noise reduction.
As preferably, described arm A1, arm B2 and arm C3 diameter are 20～35 ㎜.The arm of different tube diameters goes for various motor, has improved applicability.
Claims (5)
1. a baffler is characterized in that: comprise cylindrical shell (8) and be arranged on two interior core bodys of cylindrical shell (8); Described core body comprises arm A(1), arm B(2), arm C(3), the first dividing plate (4), second partition (5) and the 3rd dividing plate (6), the first dividing plate (4) consists of the first anechoic chamber jointly with the end of cylindrical shell (8), the first dividing plate (4), second partition (5) consists of the second anechoic chamber with cylindrical shell (8), second partition (5), the 3rd dividing plate (6) consists of the 3rd anechoic chamber with cylindrical shell (8), arm A(1) runs through the first dividing plate (4), second partition (5), the end of the 3rd dividing plate (6) and cylindrical shell (8), arm B(2) runs through second partition (5) and the 3rd dividing plate (6), arm C(3) runs through second partition (5) and the 3rd dividing plate (6), arm A(1) be positioned on the position of the first anechoic chamber and the second anechoic chamber offer a plurality of air holes (7), arm B(2) and arm C(3) be positioned on the position of the 3rd anechoic chamber and offer a plurality of air holes (7); Arm A(1 in two core bodys) be interconnected the arm B(2 in two core bodys) be interconnected the arm C(3 in two core bodys) be interconnected.
2. a kind of baffler according to claim 1, it is characterized in that: described arm A(1) be positioned on the position of the first anechoic chamber and the second anechoic chamber be provided with the inverted triangle guiding gutter, described arm B(2) be positioned on the position of the 3rd anechoic chamber and be provided with the inverted triangle guiding gutter.
3. a kind of baffler according to claim 1 and 2, it is characterized in that: described the first dividing plate (4), second partition (5) and the 3rd dividing plate (6) are ellipse.
4. a kind of baffler according to claim 1, it is characterized in that: the diameter of described air hole (7) is less than 1 ㎜.
5. a kind of baffler according to claim 1 and 2 is characterized in that: described arm A(1), arm B(2), arm C(3) diameter is 20～35 ㎝.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310315885XA CN103352738A (en) | 2013-07-25 | 2013-07-25 | Silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310315885XA CN103352738A (en) | 2013-07-25 | 2013-07-25 | Silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103352738A true CN103352738A (en) | 2013-10-16 |
Family
ID=49309143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310315885XA Pending CN103352738A (en) | 2013-07-25 | 2013-07-25 | Silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103352738A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978851A (en) * | 2014-05-28 | 2014-08-13 | 成都陵川特种工业有限责任公司 | Resistive wall silencer |
| CN105673138A (en) * | 2016-02-23 | 2016-06-15 | 偃师市宇龙金属加工厂 | Multi-gas-chamber cyclone silencing method of internal combustion engine |
| CN114738239A (en) * | 2022-03-29 | 2022-07-12 | 深圳市安保医疗科技股份有限公司 | Silencer and air compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201377347Y (en) * | 2009-01-24 | 2010-01-06 | 哈尔滨艾瑞汽车排气系统有限公司 | Multi-cavity labyrinth dissipation type silencer |
| CN201502420U (en) * | 2009-09-11 | 2010-06-09 | 丛仁青 | Automobile muffler |
| US20120055736A1 (en) * | 2010-09-07 | 2012-03-08 | Hyundai Motor Company | Muffler for vehicle |
| DE102011086989A1 (en) * | 2011-09-01 | 2013-03-07 | Hyundai Motor Co. | Silencer for an exhaust system of a vehicle |
| CN203050848U (en) * | 2012-11-28 | 2013-07-10 | 重庆长安汽车股份有限公司 | Vehicle muffler |
| CN203050850U (en) * | 2013-01-31 | 2013-07-10 | 淄博职业学院 | Automobile emission silencer |
-
2013
- 2013-07-25 CN CN201310315885XA patent/CN103352738A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201377347Y (en) * | 2009-01-24 | 2010-01-06 | 哈尔滨艾瑞汽车排气系统有限公司 | Multi-cavity labyrinth dissipation type silencer |
| CN201502420U (en) * | 2009-09-11 | 2010-06-09 | 丛仁青 | Automobile muffler |
| US20120055736A1 (en) * | 2010-09-07 | 2012-03-08 | Hyundai Motor Company | Muffler for vehicle |
| DE102011086989A1 (en) * | 2011-09-01 | 2013-03-07 | Hyundai Motor Co. | Silencer for an exhaust system of a vehicle |
| CN203050848U (en) * | 2012-11-28 | 2013-07-10 | 重庆长安汽车股份有限公司 | Vehicle muffler |
| CN203050850U (en) * | 2013-01-31 | 2013-07-10 | 淄博职业学院 | Automobile emission silencer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978851A (en) * | 2014-05-28 | 2014-08-13 | 成都陵川特种工业有限责任公司 | Resistive wall silencer |
| CN105673138A (en) * | 2016-02-23 | 2016-06-15 | 偃师市宇龙金属加工厂 | Multi-gas-chamber cyclone silencing method of internal combustion engine |
| CN105673138B (en) * | 2016-02-23 | 2018-11-23 | 广州三雅摩托车有限公司 | A kind of more gas chambers convolution noise reduction methods of internal combustion engine |
| CN114738239A (en) * | 2022-03-29 | 2022-07-12 | 深圳市安保医疗科技股份有限公司 | Silencer and air compressor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131016 |