CN102522079A - Impedance compound right-angled muffler - Google Patents
Impedance compound right-angled muffler Download PDFInfo
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- CN102522079A CN102522079A CN2012100051606A CN201210005160A CN102522079A CN 102522079 A CN102522079 A CN 102522079A CN 2012100051606 A CN2012100051606 A CN 2012100051606A CN 201210005160 A CN201210005160 A CN 201210005160A CN 102522079 A CN102522079 A CN 102522079A
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Abstract
The invention discloses an all-frequency sound absorption impedance compound right-angled muffler. A resistive muffling structure consists of a muffler shell and plate type sound absorbers, and can block airflow channels which axially linearly propagate sound waves in the muffler. A cambered diversion sound absorber of each right-angled reactive muffling structure directly faces an airflow direction to form a reactive structure, blocks the passage of low-frequency noise and enhances the absorption of the low-frequency noise. Arched structures arranged at the two ends of each of the plate type sound absorbers and the cambered diversion sound absorbers of the right-angled reactive muffling structures are favorable for improving aerodynamic performance. The impedance compound right-angled muffler has high muffling performance and process performance; and the resistive muffling structure and the right-angled reactive muffling structures can be combined according to specific mounting conditions, and are highly adaptive.
Description
Technical field
The present invention relates to a kind of sound suppressor, particularly relate to a kind of wide band sound suppressor of impedance complex that has.
Background technology
Ventilation silencer is called for short sound suppressor, is to stop sound transmission and a kind of acoustic equipment of allowing air communication to cross.Keep low ground unrest at need, intercept the place of outside noise influence, and the strong noise field does and prevent the influence of noise to surrounding environment from simultaneously, to need ventilation again, all sound suppressor need be set.Sound suppressor is used very extensive on architectural acoustics, noise control engineering.The kind of sound suppressor is a lot, and its noise elimination mechanism has resistance noise reduction, reactive muffling, the noise elimination of impedance complex formula etc.Common sound suppressor adopts resistive strip-type silencer, and this kind sound suppressor has characteristic of simple structure, still, exists the noise elimination effect of low-frequency noise undesirablely, and the existence of the spacing of chip can produce high frequency and lose efficacy.Reactive muffler is to connect resonant cavity etc. through sudden change place of pipeline section or other to cause that in the acoustic propagation process change of impedance produces the reflection of acoustic energy, interference, thereby reduces by sound suppressor to extraradial acoustic energy, to reach the sound suppressor of noise elimination purpose.
Impedance muffler is meant the sound suppressor that sound absorption and acoustic reflection are combined rightly.Middle and high audio-frequency noise eliminated by its existing dissipative muffler of while and reactive muffler is eliminated characteristic low, mid-frequency noise, has wide band noise elimination effect.Impedance complex formula sound suppressor is exactly height, mid-frequency noise noise elimination obvious results dissipative muffler and centering, low-frequency noise noise elimination obvious results reactive muffler are constituted.But it is bigger that existing impedance muffler exists windage, and the resistance part does not possess the function of absorbing high-frequency noise, and simultaneously, standard specification is unified, is difficult to the physical condition adjustment structure according to engineering.
Summary of the invention
For the windage that overcomes existing impedance muffler bigger; The resistance part does not possess the deficiency of the function of absorbing high-frequency noise; The present invention provides a kind of impedance complex right angle sound suppressor; Its resistance part possesses the function that absorbs medium and low frequency and high frequency noise, the impedance muffler efficiently that windage is less simultaneously.Can be according to the physical condition adjustment structure of engineering.
For realizing above-mentioned purpose; Technical solution of the present invention is: the resistance noise reduction structure is made up of the chip sound absorber, and the axis of chip sound absorber is arranged in parallel along airflow direction, is installed in the suppressor case through steady arm; The chip sound absorber is made up of interior acoustic absorbant two sides cover glass silk cloth and mask perforated plate; The mask perforated plate shape in the arc-shaped at chip sound absorber two ends, circular shape faces airflow direction, helps the improvement of aerodynamic quality.Resistance structure is made up of the right angle resistance structure cube that has arc water conservancy diversion sound absorber, and wherein the four sides is the inwall of suppressor case, and one side is the resistance noise reduction structure, another side air outlet louver or air inlet flange-interface.The right angle cavity zone that forms between the arc water conservancy diversion sound absorber of right angle reactive muffling structure and the inwall of suppressor case, arc water conservancy diversion sound absorber directly form resistance structure in the face of airflow direction, though low-frequency range is because frequency wavelength is long; Diffracting power is stronger; But the existence of right angle cavity zone makes acoustic energy constantly refraction in cavity zone, will be accelerated to absorb through the acoustic energy of right angle cavity zone; Absorb nonplanar wave more effectively, can eliminate frequency characteristic is main noise with the low-frequency range.Can intercept in the sound suppressor gas channel of rectilinear propagation sound wave vertically, the high frequency that can stop effectively in traditional resistive strip-type silencer lost efficacy.The inwall of sound suppressor and arc water conservancy diversion sound absorber are provided with acoustic absorbant, the outer cover glass silk cloth of acoustic absorbant, and the surface is provided with the mask perforated plate.The arc water conservancy diversion sound absorber that chip sound absorber two ends are provided with circular shape and right angle reactive muffling structure helps the improvement of aerodynamic quality.
Like dust, aqueous vapor, oil gas, acid and alkali substance and other impurity that air-flow contains, the glass wool cloth that outside acoustic absorbant, covers changes the plastic sheeting of anti-marquis into.Setting up the plastic sheeting of anti-marquis can increase the absorption of medium and low frequency, it is generally acknowledged, the thickness of the plastic sheeting of anti-marquis can be between 100 μ ~ 10 μ.But, if thickness at 100 μ, can reduce the absorption of high frequency, if thickness at 10 μ, the intensity of the plastic sheeting of anti-marquis can be influenced.It is about 50 μ that the present invention adopts the thickness of the plastic sheeting of anti-marquis, has both helped improving the acoustical absorption coefficient of medium and low frequency, also guarantees the functions of use of acoustic absorbant.
Reach the arc water conservancy diversion in chip sound absorber, the suppressor case and also can use sound absorption perforated sheet metal such as foamed aluminium board etc. to be converted into the sound absorber of same profile, replace acoustic absorbant, glass wool cloth and mask perforated plate and be installed in the suppressor case.
Reach arc water conservancy diversion sound absorber in chip sound absorber, the suppressor case and also can use the good hard acoustic board of sound absorbing capabilities, cut into the sound absorber of same shape, replace acoustic absorbant, glass wool cloth and mask perforated plate and be installed in the suppressor case.
According to the condition of engineering site, resistance noise reduction structure and right angle reactive muffling structure can be according to concrete mounting conditions, and air intake blast, air quantity, sound deadening capacity etc. make up.As limiting because of concrete mounting condition, the chip sound absorber can become stepped appearance to arrange, and right angle reactive muffling structure can be arranged to right-angled trapezium, simultaneously, arc water conservancy diversion sound absorber is not set.
The invention has the beneficial effects as follows: the combination of resistance noise reduction structure and right angle reactive muffling structure can reach the purpose that full range is eliminated the noise, and the arc water conservancy diversion sound absorber that chip sound absorber two ends are provided with circular shape and right angle reactive muffling structure helps the improvement of aerodynamic quality.Resistance noise reduction structure and right angle reactive muffling structure can be according to concrete mounting conditions according to concrete, and air intake blast, air quantity, sound deadening capacity etc. make up, and adaptability is strong.
Below in conjunction with accompanying drawing and specific embodiment the present invention is further described.
Description of drawings
Fig. 1 is the structural map of facing of first embodiment of the invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the A local structure figure of Fig. 1;
Fig. 5 is the B local structure figure of Fig. 3;
Fig. 6 is the structural map of facing of second embodiment of the invention;
Fig. 7 is the structural map of facing of third embodiment of the invention;
Fig. 8 is the structural map of facing of four embodiment of the invention;
Fig. 9 is the structural map of facing of fifth embodiment of the invention;
Figure 10 is the structural map of facing of sixth embodiment of the invention;
Figure 11 is the structural map of facing of seventh embodiment of the invention;
Figure 12 is the structural map of facing of eighth embodiment of the invention;
1. by suppressor case among the figure, 2. resistance noise reduction structure, 3. right angle reactive muffling structure, 4. flange-interface, 5. air outlet louver; 6. chip sound absorber, 7. steady arm, 8. circular shape, 9. acoustic absorbant, 10. glass wool cloth; 11. the mask perforated plate, 12. arc water conservancy diversion sound absorbers, 13. cubes, 14. right angle cavity zones; 15. right-angled trapezium, 16. plastic sheetings of anti-marquis, 17. sound absorption perforated sheet metals, 18. hard acoustic boards.
Embodiment
In Fig. 1,2,3,4, the embodiment one shown in 5, the impedance complex right angle sound suppressor of forming by suppressor case (1), resistance noise reduction structure (2), right angle reactive muffling structure (3), flange-interface (4), air outlet louver (5).The chip sound absorber (6) of resistance noise reduction structure (2) uses steady arm (7) to be installed in the suppressor case (1), is arranged in parallel along airflow direction.The chip sound absorber is made up of (6) interior acoustic absorbant (9) two sides cover glass silk cloth (10) and mask perforated plate (11), mask perforated plate (11) shape in the arc-shaped (8) at chip sound absorber (6) two ends.Resistance noise reduction structure (2) two limits are right angle reactive muffling structures (3); Right angle reactive muffling structure (3) is made up of the cube (13) that has arc water conservancy diversion sound absorber (12); Wherein the four sides is the inwall of suppressor case (1); One side is resistance noise reduction structure (2), another side air outlet louver (5) or air inlet flange-interface (4).The inwall of suppressor case (1) and arc water conservancy diversion sound absorber (12) are provided with acoustic absorbant (9), outer cover glass silk cloth (10), and the surface is provided with mask perforated plate (11).
In embodiment illustrated in fig. 6 two; Actual conditions according to engineering; Can be by suppressor case (1) and three right angle reactive muffling structures (3), two resistance noise reduction structures (2), the combined impedance composite perpendicular sound suppressor of (4) air outlet louvers of flange-interface (5).The characteristics of present embodiment are: adaptability is strong, and sound deadening capacity is big, is particularly useful for sound insulation and detects room turnover wind sound suppressor.
In embodiment illustrated in fig. 7 three; According to the actual conditions of engineering, can be by the combined impedance composite perpendicular sound suppressor of suppressor case (1) and two (3) three (2) (4) air outlet louvers of flange-interface of resistance noise reduction structure of right angle reactive muffling structure (5).The characteristics of present embodiment are: can be according to mounting conditions, and through the flange-interface independent assortment, adaptability is strong, and sound deadening capacity is big.
In embodiment illustrated in fig. 8 four, as limiting because of concrete mounting condition, chip sound absorber (6) can become stepped appearance to arrange, and right angle reactive muffling structure (3) can be arranged to right-angled trapezium (15), simultaneously, arc water conservancy diversion sound absorber (12) is not set.The characteristics of present embodiment are: adaptability is strong, and is simple in structure, and cost is low, is widely used, and the turnover wind that is particularly useful for acoustic hood, sound insulation room is eliminated the noise.
In embodiment illustrated in fig. 9 five; According to the actual conditions of engineering, can become the combined impedance composite perpendicular sound suppressor of (2) (4) air outlet louvers of flange-interface of resistance noise reduction structure (5) of stepped appearance arrangement by (3) two chip sound absorbers of right angle reactive muffling structure (6) of suppressor case (1) and four right-angled trapezium (15).The characteristics of present embodiment are: the volume that takes up room is little, and adaptability is strong, and sound deadening capacity is big.
In embodiment illustrated in fig. 10 six; The dust, aqueous vapor, oil gas, acid and alkali substance and other impurity that contain like air-flow; The outer glass wool cloth (10) that covers of the acoustic absorbant (9) of the inwall of chip sound absorber (6) and suppressor case (1) changes the plastic sheeting of anti-marquis (16) into, to guarantee the functions of use of acoustic absorbant.
In embodiment illustrated in fig. 11 seven; Reach arc water conservancy diversion sound absorber (12) in chip sound absorber (6), the suppressor case (1) and also can use sound absorption perforated sheet metal (17) to be converted into the sound absorber of same profile, replace acoustic absorbant (9), glass wool cloth (10) and mask perforated plate (11) and be installed in the suppressor case (1).
In embodiment illustrated in fig. 12 eight; Reach arc water conservancy diversion sound absorber (12) in chip sound absorber (6), the suppressor case (1) and also can use the good hard acoustic board (18) of sound absorbing capabilities; Cut into the sound absorber of same profile, replace acoustic absorbant (9), glass wool cloth (10) and mask perforated plate (11) and be installed in the suppressor case (1).
Should be appreciated that in not departing from the scope of the present invention, can make multiple combination and change the foregoing description.
Claims (10)
1. an impedance complex right angle sound suppressor is characterized in that: be made up of suppressor case, resistance noise reduction structure, right angle reactive muffling structure, flange-interface, air outlet louver.
2. impedance complex according to claim 1 right angle sound suppressor; It is characterized in that: the resistance noise reduction structure is made up of the chip sound absorber; The axis of chip sound absorber is arranged in parallel along airflow direction; The chip sound absorber is made up of interior acoustic absorbant two sides cover glass silk cloth and mask perforated plate, and the mask perforated plate shape in the arc-shaped at two ends, chip sound absorber use steady arm to be installed in the suppressor case.
3. impedance complex according to claim 1 right angle sound suppressor; It is characterized in that: right angle reactive muffling structure is made up of cube and arc water conservancy diversion sound absorber; Wherein the four sides is the inwall of suppressor case; One side is the resistance noise reduction structure, another side air outlet louver or air inlet flange-interface, and the inwall of arc water conservancy diversion sound absorber and suppressor case forms the right angle cavity zone.
4. impedance complex according to claim 1 right angle sound suppressor is characterized in that: reaches arc water conservancy diversion sound absorber in the suppressor case, acoustic absorbant is set, and the outer cover glass silk cloth of acoustic absorbant, the surface is provided with the mask perforated plate.
5. impedance complex according to claim 1 right angle sound suppressor is characterized in that: contain its impurity like charge air flow, can change the outer cover glass silk cloth of acoustic absorbant into anti-marquis plastic sheeting, the surface is provided with the mask perforated plate.
6. impedance complex according to claim 2 right angle sound suppressor is characterized in that: the quantity of the chip sound absorber of resistance noise reduction structure can be according to the adjustment of air intake air quantity, and the length of chip sound absorber can require adjustment according to sound deadening capacity.
7. impedance complex according to claim 1 right angle sound suppressor is characterized in that: resistance noise reduction structure and right angle reactive muffling structure can be according to concrete mounting conditions, and air intake blast, air quantity, sound deadening capacity etc. make up.
8. impedance complex according to claim 7 right angle sound suppressor is characterized in that: as limiting because of concrete mounting condition, the chip sound absorber can become stepped appearance to arrange, and the right angle reactive muffling structure that disappears can be arranged to right-angled trapezium, and arc water conservancy diversion sound absorber is not set.
9. impedance complex according to claim 1 right angle sound suppressor; It is characterized in that: reach arc water conservancy diversion sound absorber in chip sound absorber, the suppressor case and can use the sound absorption perforated sheet metal to be converted into the sound absorber of same profile, replace acoustic absorbant, glass wool cloth and mask perforated plate and be installed in the suppressor case.
10. impedance complex according to claim 1 right angle sound suppressor; It is characterized in that: reach arc water conservancy diversion sound absorber in chip sound absorber, the suppressor case and also can use the good hard acoustic board of sound absorbing capabilities; Cut into the sound absorber of same shape, replace acoustic absorbant, glass wool cloth and mask perforated plate and be installed in the suppressor case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210005160.6A CN102522079B (en) | 2012-01-10 | 2012-01-10 | Impedance compound right-angled muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210005160.6A CN102522079B (en) | 2012-01-10 | 2012-01-10 | Impedance compound right-angled muffler |
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| Publication Number | Publication Date |
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| CN102522079A true CN102522079A (en) | 2012-06-27 |
| CN102522079B CN102522079B (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210005160.6A Active CN102522079B (en) | 2012-01-10 | 2012-01-10 | Impedance compound right-angled muffler |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606370A (en) * | 2012-09-29 | 2014-02-26 | 厦门嘉达环保建造工程有限公司 | Outdoor impedance composite silencer |
| CN103745719A (en) * | 2013-12-17 | 2014-04-23 | 抚顺博宇噪声控制技术开发有限公司 | Resistance-resonance large-section silencer |
| CN104008748A (en) * | 2014-05-06 | 2014-08-27 | 北京绿创声学工程设计研究院有限公司 | Shuttle type sheet silencer |
| CN103410637B (en) * | 2013-08-11 | 2016-01-20 | 中国人民解放军重庆通信学院 | A kind of intake noise reduction structure of mute power generator group |
| CN105737358A (en) * | 2014-12-10 | 2016-07-06 | 宋继萍 | Ventilating and sound attenuating system for sound attenuating chamber |
| CN106057187A (en) * | 2016-06-29 | 2016-10-26 | 广州恒成智道信息科技有限公司 | Resistive and reactive combined assembly type muffler |
| CN106098049A (en) * | 2016-06-15 | 2016-11-09 | 安徽省绿巨人环境技术有限公司 | A kind of noise insulation device based on arc |
| CN106205588A (en) * | 2016-08-26 | 2016-12-07 | 四川三元环境治理股份有限公司 | Multilamellar perforated microstructure noise elimination flow deflector |
| CN106320550A (en) * | 2015-09-09 | 2017-01-11 | 无锡亮慧环保机械有限公司 | Sound insulation board structure |
| CN106322724A (en) * | 2015-09-30 | 2017-01-11 | 无锡威胜环保设备制造有限公司 | Novel noise reduction machine room housing structure |
| CN106320547A (en) * | 2015-09-30 | 2017-01-11 | 无锡威胜环保设备制造有限公司 | Noise-reduction machine room housing provided with lateral sound insulation boards |
| CN106320562A (en) * | 2015-09-09 | 2017-01-11 | 无锡亮慧环保机械有限公司 | Noise control structure for machine room |
| CN106545190A (en) * | 2015-09-23 | 2017-03-29 | 厦门嘉达声学技术有限公司 | Quiet room air outlet silencing system |
| CN107084629A (en) * | 2017-04-19 | 2017-08-22 | 华电电力科学研究院 | A kind of bending-type, stepped and ripple type denoising device for cooling tower |
| CN108082757A (en) * | 2016-11-22 | 2018-05-29 | 扬州通利冷藏集装箱有限公司 | Cold silencer cover and with its frozen products insulated container |
| CN108550362A (en) * | 2018-04-28 | 2018-09-18 | 天津航天瑞莱科技有限公司 | A kind of exhausting silencer channel for high intensity sonic travelling wave experiment |
| CN109931297A (en) * | 2017-12-18 | 2019-06-25 | 厦门嘉达环保科技有限公司 | Metope exhaust fan composite muffler |
| CN110428800A (en) * | 2019-08-28 | 2019-11-08 | 宝钢空调（泰州）有限公司 | A kind of pre- insulation impedance composite muffler |
| CN112102805A (en) * | 2020-08-28 | 2020-12-18 | 武汉理工大学 | Adjustable impedance combined type silencer and noise elimination system |
| CN109931297B (en) * | 2017-12-18 | 2024-06-04 | 厦门嘉达环保科技有限公司 | Wall exhaust fan composite muffler |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606370B (en) * | 2012-09-29 | 2016-08-03 | 厦门嘉达环保建造工程有限公司 | Outdoor impedance composite silencer |
| CN103606370A (en) * | 2012-09-29 | 2014-02-26 | 厦门嘉达环保建造工程有限公司 | Outdoor impedance composite silencer |
| CN103410637B (en) * | 2013-08-11 | 2016-01-20 | 中国人民解放军重庆通信学院 | A kind of intake noise reduction structure of mute power generator group |
| CN103745719A (en) * | 2013-12-17 | 2014-04-23 | 抚顺博宇噪声控制技术开发有限公司 | Resistance-resonance large-section silencer |
| CN104008748A (en) * | 2014-05-06 | 2014-08-27 | 北京绿创声学工程设计研究院有限公司 | Shuttle type sheet silencer |
| CN105737358A (en) * | 2014-12-10 | 2016-07-06 | 宋继萍 | Ventilating and sound attenuating system for sound attenuating chamber |
| CN106320550A (en) * | 2015-09-09 | 2017-01-11 | 无锡亮慧环保机械有限公司 | Sound insulation board structure |
| CN106320562A (en) * | 2015-09-09 | 2017-01-11 | 无锡亮慧环保机械有限公司 | Noise control structure for machine room |
| CN106545190A (en) * | 2015-09-23 | 2017-03-29 | 厦门嘉达声学技术有限公司 | Quiet room air outlet silencing system |
| CN106545190B (en) * | 2015-09-23 | 2019-02-12 | 厦门嘉达声学技术有限公司 | Silent room air outlet silencing system |
| CN106322724A (en) * | 2015-09-30 | 2017-01-11 | 无锡威胜环保设备制造有限公司 | Novel noise reduction machine room housing structure |
| CN106320547A (en) * | 2015-09-30 | 2017-01-11 | 无锡威胜环保设备制造有限公司 | Noise-reduction machine room housing provided with lateral sound insulation boards |
| CN106098049A (en) * | 2016-06-15 | 2016-11-09 | 安徽省绿巨人环境技术有限公司 | A kind of noise insulation device based on arc |
| CN106057187A (en) * | 2016-06-29 | 2016-10-26 | 广州恒成智道信息科技有限公司 | Resistive and reactive combined assembly type muffler |
| CN106205588A (en) * | 2016-08-26 | 2016-12-07 | 四川三元环境治理股份有限公司 | Multilamellar perforated microstructure noise elimination flow deflector |
| CN106205588B (en) * | 2016-08-26 | 2022-10-28 | 四川三元环境治理股份有限公司 | Multilayer micro-perforated structure noise elimination flow deflector |
| CN108082757A (en) * | 2016-11-22 | 2018-05-29 | 扬州通利冷藏集装箱有限公司 | Cold silencer cover and with its frozen products insulated container |
| CN108082757B (en) * | 2016-11-22 | 2020-03-17 | 扬州通利冷藏集装箱有限公司 | Cold machine amortization cover and have its refrigerated container |
| CN107084629A (en) * | 2017-04-19 | 2017-08-22 | 华电电力科学研究院 | A kind of bending-type, stepped and ripple type denoising device for cooling tower |
| CN109931297A (en) * | 2017-12-18 | 2019-06-25 | 厦门嘉达环保科技有限公司 | Metope exhaust fan composite muffler |
| CN109931297B (en) * | 2017-12-18 | 2024-06-04 | 厦门嘉达环保科技有限公司 | Wall exhaust fan composite muffler |
| CN108550362A (en) * | 2018-04-28 | 2018-09-18 | 天津航天瑞莱科技有限公司 | A kind of exhausting silencer channel for high intensity sonic travelling wave experiment |
| CN110428800A (en) * | 2019-08-28 | 2019-11-08 | 宝钢空调（泰州）有限公司 | A kind of pre- insulation impedance composite muffler |
| CN112102805A (en) * | 2020-08-28 | 2020-12-18 | 武汉理工大学 | Adjustable impedance combined type silencer and noise elimination system |
| CN112102805B (en) * | 2020-08-28 | 2024-05-14 | 武汉理工大学 | Impedance-adjustable composite muffler and noise elimination system |
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|---|---|
| CN102522079B (en) | 2014-06-11 |
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