CN104299608A - Sound absorbing noise reduction assembly and method thereof - Google Patents
Sound absorbing noise reduction assembly and method thereof Download PDFInfo
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- CN104299608A CN104299608A CN201310303445.2A CN201310303445A CN104299608A CN 104299608 A CN104299608 A CN 104299608A CN 201310303445 A CN201310303445 A CN 201310303445A CN 104299608 A CN104299608 A CN 104299608A
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Abstract
The invention relates to a sound absorbing noise reduction assembly and a method thereof. The sound absorbing noise reduction assembly comprises multiple sound absorbing noise reduction assemblies which are arranged with intervals, wherein the sound absorbing noise reduction assemblies respectively have a casing and a sound eliminating chamber defined by the casing, the casings are respectively provided with a first surface and a second surface relative to the first surface, the first surfaces are respectively provided with multiple sound absorbing micro holes communicated with the sound eliminating chambers, and the second surface of the one sound absorbing noise reduction assembly is opposite to a first surface of the adjacent sound absorbing noise reduction assembly. Through the sound absorbing noise reduction assembly, when sound waves are reflected by the second surface of the one sound absorbing noise reduction assembly to the first surface of the adjacent sound absorbing noise reduction assembly, enter the sound eliminating chamber through the sound absorbing micro holes of the adjacent sound absorbing noise reduction assembly and are reflected in the sound eliminating chambers to realize sound absorbing noise reduction.
Description
Technical field
The present invention has about a kind of sound-absorbing noise abatement assembly and method thereof, espespecially each sound-absorbing noise abatement inter-module is formed with a spacing, to provide air circulation, and during sound wave contact sound-absorbing noise abatement assembly, to enter with noise reduction noise abatement in noise reduction cavity via sound-absorbing micropore, reach the object taking into account sound-absorbing noise abatement and ventilation whereby.
Background technology
A kind of sound insulation technology conventional at present, the prior art disclosure of " soundproof wall " of such as TaiWan, China notification number M353224, it comprises a casing, one acoustical cotton and a sheet metal, aforementioned casing defines a hollow chamber, and on casing, offer the opening of a connection hollow chamber, aforementioned acoustical cotton loads the hollow chamber of aforementioned casing, aforementioned metal plate is covered on aforementioned casing, and the opening of the aforementioned casing of involution, multiple open-work is offered again on aforementioned metal plate, when sound wave contacts this sheet metal, by the open-work by sheet metal, and enter the hollow chamber of this casing, recycle this acoustical cotton and absorb sound wave, to reach the object reducing volume.
But when soundproof wall is disposed in the outdoor, moisture, moisture easily flow into casing via aforementioned open-work, cause box house ponding, this will cause acoustical cotton, and easily because of water suction, water cut is too high, loses the function of sound-absorbing, and has the shortcoming of practicality deficiency.
For this reason, above-mentioned front case just improves for prior art, provides a kind of soundproof wall, comprising: a casing, comprises a first end closed, an inner room for hollow, and one oppositely to arrange with this first end and to be communicated with opening second end of this room; And a sheet metal, be incorporated into opening second end of this casing, comprise one away from the first surface of this room, and one and this first surface oppositely to arrange and in the face of the second surface of this room; This first surface has most bossy body, and most be intersect the recess staggering and arrange with these bossy bodies; This second surface has the V-arrangement ditch of most adjacent arrangement, and it is continuously wavy first side that these V-arrangement ditches have one respectively, and one is concordant shape and corresponds to the second side of this first side; These recess that this sheet metal is corresponding and these V-arrangement ditches define a junction respectively, and each junction has a perforation, to be communicated with this recess and this V-arrangement ditch.
But above-mentioned front case still has not enough place to be improved, reason is listed below:
1, arranging of soundproof wall will hinder the circulation of air, and is not suitable for the environment that household, factory building etc. need natural ventilation.
2, the soundproof wall of above-mentioned improvement, though the acoustical cotton of no longer including over easily absorbs water and loses the shortcoming of silencing function, but when soundproof wall is disposed in the outdoor, rainwater, dust are still easily direct enters casing via aforementioned perforation, cause box house ponding, laying dust, and affect the function of soundproof wall sound-absorbing noise abatement.
Summary of the invention
The object of the present invention is to provide a kind of sound-absorbing noise abatement assembly, it is not good that it can improve known sound insulation technology ventilation effect, and the disappearance of the inner easily ponding of soundproof wall.
For reaching above-mentioned purpose, solution of the present invention is:
A kind of sound-absorbing noise abatement assembly, comprises:
Multiple spaced sound-absorbing noise abatement assembly, the noise reduction cavity that aforementioned sound-absorbing noise abatement assembly has a shells and defined by this shells, and the second surface of a first surface and relative said first surface is provided with in aforementioned shells, said first surface offers the multiple sound-absorbing micropores being communicated with aforementioned noise reduction cavity, and the first surface of the second surface of aforementioned sound-absorbing noise abatement assembly and adjacent sound-absorbing noise abatement assembly toward each other.
Preferably, the sound-absorbing micropore size of aforementioned sound-absorbing noise abatement assembly by the first surface of described shells towards aforementioned noise reduction cavity direction convergent.
Preferably, the sound-absorbing micropore size of aforementioned sound-absorbing noise abatement assembly is tapered to and transfers flaring to when aforementioned noise reduction cavity.
Preferably, in aforementioned sound-absorbing noise abatement assembly, the percentage of open area of sound-absorbing micropore is 3 ‰ ~ 30 ‰, and the perforated area of aforementioned sound-absorbing micropore in minimum-value aperture place is 0.002mm
2~ 0.65mm
2.
Preferably, the second surface of aforementioned sound-absorbing noise abatement assembly is provided with multiple sound-absorbing micropore.
Preferably, between the first surface of aforementioned sound-absorbing noise abatement assembly and second surface, there is a thickness T, aforementioned sound-absorbing noise abatement assembly is defined as one first extension line along the bearing of trend of aforementioned thicknesses T, the orientation of this aforementioned sound-absorbing noise abatement assembly is defined as one second extension line, and shape has angle between aforementioned first extension line and aforementioned second extension line.
Preferably, aforementioned angle is between 0 ° to 90 °.
Preferably, aforementioned angle is between 5 ° to 85 °.
And a kind of sound-absorbing noise reducing method is provided, use as aforementioned sound-absorbing noise abatement assembly carries out, comprise the following step:
A, first aforementioned sound-absorbing noise abatement assembly is arranged on path that a sound wave passes through;
B, when aforementioned sound wave contacts the second surface of aforementioned sound-absorbing noise abatement assembly, this sound wave reflexes to the first surface of adjacent sound-absorbing noise abatement assembly by the second surface of aforementioned sound-absorbing noise abatement assembly, and enter aforementioned noise reduction cavity via the sound-absorbing micropore of the first surface of aforementioned adjacent sound-absorbing noise abatement assembly, and the sound wave making to enter in aforementioned noise reduction cavity in this noise reduction cavity internal reflection with noise reduction noise abatement.
Preferably, aforementioned sound-absorbing noise abatement assembly is allowed with described first extension line and described second extension line intersection for axle center rotates, to change aforementioned angle in step B.
The present invention has following advantages:
1, the present invention by sound-absorbing noise abatement inter-module every setting, and allow each sound-absorbing noise abatement inter-module be formed with a spacing, to provide air circulation, and during sound wave contact sound-absorbing noise abatement assembly, to enter with noise reduction noise abatement in noise reduction cavity via sound-absorbing micropore, reach the object taking into account sound-absorbing noise abatement and ventilation whereby.
2, when sound wave contacts aforementioned sound-absorbing noise abatement assembly, second surface by aforementioned sound-absorbing noise abatement assembly is reflexed to the first surface of adjacent sound-absorbing noise abatement assembly by this sound wave, and enter the noise reduction cavity of adjacent sound-absorbing noise abatement assembly, and the sound wave office entered in aforementioned noise reduction cavity is restrainted in this noise reduction cavity with noise reduction noise abatement, avoid external dust, rainwater directly to enter noise reduction cavity and laying dust, ponding whereby, prevent sound-absorbing noise reduction effect from affecting by environment.
3, sound wave is when contacting the second surface of sound-absorbing noise abatement assembly, the sound wave of the first surface of adjacent sound-absorbing noise abatement assembly will be reflexed to, in the reflection process of second surface, sound wave portion of energy can be decayed by the noise reduction cavity at second surface place, and the sound wave of the first surface of adjacent sound-absorbing noise abatement assembly also can partly reflect, through the interval adjusting noise reduction cavity size and sound-absorbing noise abatement assembly, sound wave energy more can be made to continue in interval by multipath reflection and absorption, compare with the sound-absorbing wall of known techniques, sound wave contact sound-absorbing wall only has single noise reduction cavity to do sound wave absorption, review sound wave when contacting this case sound-absorbing noise abatement assembly, not only can decay in its noise reduction cavity, the distance of sound-absorbing noise abatement inter-module also will make sound wave when advancing simultaneously, carry out the reflection (please refer to Fig. 7 described later) of continous way, decayed by absorbing gradually, form noise reduction effect, namely spacing is utilized to allow this case tool ventilate, sound-absorbing noise abatement, sunshade and daylighting function, for this reason design one large feature.
4, angle between the first extension line and aforementioned second extension line can be adjusted for sound source direction, reach higher erasure effect.
Accompanying drawing explanation
Fig. 1 is schematic side view of the present invention;
Fig. 2 is the local side-looking cross-sectional schematic that the present invention represents noise reduction noise abatement mechanism;
Fig. 3 is the schematic diagram of its unit area percentage of open area of sound-absorbing micropore of the present invention;
The view of Fig. 4 A to be sound-absorbing noise abatement assembly of the present invention be mososeries;
Fig. 4 B is sound-absorbing noise abatement assembly of the present invention is olivary view;
Fig. 4 C is the rounded view of sound-absorbing noise abatement assembly of the present invention;
Fig. 5 to be the angle theta of S1 and S2 of the present invention be view of 90 °;
Fig. 6 to be the angle theta of S1 and S2 of the present invention be view of 0 °;
Fig. 7 is another embodiment of the present invention figure;
Fig. 8 is the experiment comparison diagram of sample 1 to sample 3;
Fig. 9 is the experiment comparison diagram of sample 4 to sample 6;
Figure 10 is the experiment comparison diagram of sample 7 to sample 9;
Figure 11 is the experiment comparison diagram of sample 10 to sample 12.
[symbol description]
1 sound-absorbing noise abatement assembly 10 sound-absorbing noise abatement assembly
100 sound-absorbing noise abatement assembly 11 shells
111 first surface 112 second surfaces
113 sound-absorbing micropore 12 noise reduction cavitys
2 support body T thickness
L length θ angle
S1 first extension line S2 second extension line
D spacing.
Embodiment
In order to explain technical scheme of the present invention further, below by specific embodiment, the present invention will be described in detail.
Comprehensive above-mentioned technical characteristic, the primary efficacy of the method for sound-absorbing noise abatement of the present invention can present in following embodiment is clear.
The present invention refers to shown in Fig. 1 and Fig. 2, and its step is as follows:
A, one sound-absorbing noise abatement assembly 1 is provided, aforementioned sound-absorbing noise abatement assembly 1 includes multiple sound-absorbing noise abatement assembly 10, the noise reduction cavity 12 that aforementioned sound-absorbing noise abatement assembly 10 has a shells 11 and defined by this shells 11, and the second surface 112 of a first surface 111 and relative said first surface 111 is provided with in aforementioned shells 11, the multiple sound-absorbing micropores 113 being communicated with aforementioned noise reduction cavity 12 are offered again on said first surface 111, this noise reduction cavity 12 is entered via aforementioned sound-absorbing micropore 113 for sound wave, aforementioned sound-absorbing noise abatement assembly 10 interval is arranged, make the first surface 111 of the second surface 112 of aforementioned sound-absorbing noise abatement assembly 10 and adjacent sound-absorbing noise abatement assembly 10 toward each other and there is a space D (please refer to Fig. 6),
Further illustrate: the kenel of aforementioned sound-absorbing micropore 113 in the present embodiment, sound-absorbing micropore 113 aperture by the first surface 111 of described shells 11 towards noise reduction cavity 12 direction convergent, and transfer flaring to when being tapered near aforementioned noise reduction cavity 12, and this varying aperture pattern, by increase sound wave by time the transmission loss that causes, but the kenel in sound-absorbing micropore 113 aperture is not limited thereto, it can also be clear opening kenel, gradual shrinkage type state again aforementioned sound-absorbing micropore 113 is not limited only to the first surface 111 being arranged at shells 11, on second surface 112 also aforesaid sound-absorbing micropore 113 is set further,
Aforementioned sound-absorbing micropore 113 is in minimum-value aperture place definition perforated area A, and this perforated area A is 0.002mm
2~ 0.65mm
2though it is noted that in the present embodiment with the aperture conversion perforated area A of circular hole as an example, but therefore the kenel of sound-absorbing micropore is not defined as circular hole, can also be rule or the irregular kenels such as tri-angle-holed, square opening, and the percentage of open area of aforementioned sound-absorbing micropore 113 is 3 ‰ ~ 30 ‰, aforementioned percentage of open area refers to the ratio of perforated area summation and unit area in unit area, and namely percentage of open area P is: P=2A (a × b) (please refer to Fig. 3).
To illustrate again: in the present embodiment, the shells 11 of aforementioned sound-absorbing noise abatement assembly 10 comprises the assembly of at least two-phase fit, and define aforementioned noise reduction cavity 12, but the external form of shells 11 and two assemblies and two assembly array modes are not as limit, it is seen in side view cutaway drawing, shells 11 external form can be rectangle (please refer to Fig. 2), mososeries (please refer to Fig. 4 A), the various geometric configuration such as olive shape (please refer to Fig. 4 B) or circular (please refer to Fig. 4 C), and the external form of two assemblies can be lid or plate body kenel, the array mode of two assemblies can also be riveted joint again, embedding group, the groups such as welding connect mode.
B, aforementioned sound-absorbing noise abatement assembly 1 is arranged on path that a sound wave passes through, when making aforementioned sound wave contact aforementioned sound-absorbing noise abatement assembly 10, second surface 112 by aforementioned sound-absorbing noise abatement assembly 10 is reflexed to the first surface 111 of adjacent sound-absorbing noise abatement assembly 10 by this sound wave, and enter aforementioned noise reduction cavity 12 via the sound-absorbing micropore 113 of the first surface 111 of aforementioned adjacent sound-absorbing noise abatement assembly 10, and the sound wave office entered in aforementioned noise reduction cavity 12 is restrainted in this noise reduction cavity 12 with noise reduction noise abatement.
Further illustrate the parameters condition of the present embodiment sound-absorbing noise abatement assembly 10: first surface 111 and the length L between second surface 112 with a thickness T and relative aforementioned thicknesses T of aforementioned sound-absorbing noise abatement assembly 10, this aforementioned sound-absorbing noise abatement assembly 10 center is along the bearing of trend definition one first extension line S1 of aforementioned thicknesses T, and along sound-absorbing noise abatement assembly 1 orientation definition one second extension line S2, and between aforementioned first extension line S1 and aforementioned second extension line S2, form an angle theta;
Again, aforementioned sound-absorbing noise abatement assembly 1 can be arranged on support body 2 when implementing, to be configured at the noise transmission places such as ventilating opening, window, machine room, and coordinate interlinked mechanism to use (not shown), this interlinked mechanism is that known techniques does not repeat them here, object is that controlling aforementioned sound-absorbing noise abatement assembly 10 rotates for axle center with described first extension line S1 and described second extension line S2 intersection, to change aforementioned angle theta, thus adjusts sound-absorbing noise reduction effect;
Illustrate: the angular range that aforementioned interlinked mechanism can adjust angle theta is between 0 ° to 90 °, then soundproof effect the best (please refer to Fig. 5) 90 ° time, and 0 ° time, be ventilation effect the best (please refer to Fig. 6), but under the consideration taking into account ventilation and soundproof effect, then the angular setting scope of angle theta is then 0 ° of < θ < 90 °, preferably between 5 ° to 85 °, so, just sound-absorbing noise abatement assembly 10 can be allowed sound wave to be reflexed to the noise reduction cavity 12 of adjacent sound-absorbing noise abatement assembly 10, aforementioned sound wave office of being reflected is restrainted in this noise reduction cavity 12 with noise reduction noise abatement, avoid external dust whereby, rainwater directly enters noise reduction cavity 12 and has dust-proof, the function of waterproof, prevent sound-absorbing noise reduction effect affected by environment.
Fig. 7 is another embodiment of the present invention figure, and signal increases the length L of sound-absorbing noise abatement assembly 100, or when shortening space D (please refer to Fig. 6), to effectively allow sound wave in traveling process, carry out the multiple reflections of continous way, and decayed by absorbing gradually, form noise reduction effect.
Following taken off table 1 is to table 3 for the present invention tests comparison chart, and table 3 is for taking from the experiment comparison chart of table 1 and table 2, and the space D of table 3 is fixed as 100mm and 300mm respectively, sound-absorbing noise abatement assembly 10 is with different-thickness T, length L, the parameter of space D, first surface 111(and table 1 one side to table 3 is only arranged on) with sound-absorbing micropore 113, or first surface 111 and second surface 112 all arrange two-sided to table 3 of sound-absorbing micropore 113(and table 1), under angle theta is the condition between 0 ° to 90 °, in sound equipment laboratory according to sound transmission grade (STC, Sound Transmission Class) examination criteria and sound reduces index (Rw, Weight Sound Reduction Index) examination criteria, judge the grade of erasure effect, STC is from 125 to the value within the scope of 4000Hz according to ASTM, tried to achieve by reference curve conversion according to regulation, Rw is from 100 to the value within the scope of 5000Hz according to ISO, tried to achieve by reference curve conversion according to regulation, aforementioned thicknesses T is between 30 ~ 120mm, mentioned length L between 100 ~ 300mm, under be classified as the relative Parameter Conditions of each sample, and experimental data gained sound transmission grade (STC) and sound reduce index (Rw),
[table 1]
[table 2]
[table 3]
Coordinate table 1 to the experimental result of table 3 to observe known, space D performance muffler sound-damping qualities under the ratio of length L and space D is 1:1/2 situation is the highest.1:2/3 is time high gap ratio, and 1:1 is minimum.Relatively different spacing ratio, under, sound-absorbing micropore 113 larger in thickness T is set to the situation of one side setting, the lifting of erasure effect is more obvious.
Fig. 8 is the comparison sheet of sample 1 to sample 3 in table 3, and Fig. 9 is sample 4 and the comparison sheet of sample 6 in table 3, can be known by inference by above-mentioned experiment, and sound-absorbing noise abatement assembly 10 is under the Parameter Conditions that length L is identical, and increasing thickness T will promote sound-damping qualities.
Figure 10 is the comparison sheet of sample 7 to sample 9 in table 3, and Figure 11 is the comparison sheet of sample 10 and sample 12 in table 3, can be known by inference by above-mentioned experiment, sound-absorbing noise abatement assembly 10 is under length L and thickness T-phase Parameter Conditions together, one side arranges the erasure effect of sound-absorbing micropore 113, is better than the two-sided erasure effect arranging sound-absorbing micropore 113.
Above-described embodiment and graphic and non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present invention.
Claims (10)
1. a sound-absorbing noise abatement assembly, is characterized in that, comprises:
Multiple spaced sound-absorbing noise abatement assembly, the noise reduction cavity that sound-absorbing noise abatement assembly has a shells and defined by this shells, and the second surface of a first surface and relative first surface is provided with in shells, first surface offers the multiple sound-absorbing micropores being communicated with noise reduction cavity, and the first surface of the second surface of sound-absorbing noise abatement assembly and adjacent sound-absorbing noise abatement assembly toward each other.
2. sound-absorbing noise abatement assembly as claimed in claim 1, is characterized in that: the sound-absorbing micropore size of sound-absorbing noise abatement assembly by the first surface of shells towards noise reduction cavity direction convergent.
3. sound-absorbing noise abatement assembly as claimed in claim 2, is characterized in that: the sound-absorbing micropore size of sound-absorbing noise abatement assembly is tapered to and transfers flaring to when noise reduction cavity.
4. sound-absorbing noise abatement assembly as claimed in claim 1, it is characterized in that: in sound-absorbing noise abatement assembly, the percentage of open area of sound-absorbing micropore is 3 ‰ ~ 30 ‰, and the perforated area of sound-absorbing micropore in minimum-value aperture place is 0.002mm
2~ 0.65mm
2.
5. the sound-absorbing noise abatement assembly as described in any one of Claims 1-4, is characterized in that: the second surface of sound-absorbing noise abatement assembly is provided with multiple sound-absorbing micropore.
6. sound-absorbing noise abatement assembly as claimed in claim 1, it is characterized in that: there is between the first surface of sound-absorbing noise abatement assembly and second surface a thickness T, sound-absorbing noise abatement assembly is defined as one first extension line along the bearing of trend of thickness T, the orientation of this sound-absorbing noise abatement assembly is defined as one second extension line, and shape has angle between the first extension line and the second extension line.
7. sound-absorbing noise abatement assembly as claimed in claim 6, is characterized in that: angle is between 0 ° to 90 °.
8. sound-absorbing noise abatement assembly as claimed in claim 6, is characterized in that: angle is between 5 ° to 85 °.
9. a sound-absorbing noise reducing method, uses the sound-absorbing noise abatement assembly of any one of claim 1 to 8 to carry out, it is characterized in that, comprise the following step:
A, first aforementioned sound-absorbing noise abatement assembly is arranged on path that a sound wave passes through;
B, when the second surface of aforementioned sound wave contact sound-absorbing noise abatement assembly, this sound wave reflexes to the first surface of adjacent sound-absorbing noise abatement assembly by the second surface of sound-absorbing noise abatement assembly, and enter noise reduction cavity via the sound-absorbing micropore of the first surface of adjacent sound-absorbing noise abatement assembly, and the sound wave making to enter in noise reduction cavity in the internal reflection of noise reduction cavity with noise reduction noise abatement.
10. the method for sound-absorbing noise abatement as claimed in claim 9, is characterized in that: allow aforementioned sound-absorbing noise abatement assembly with described first extension line and the second extension line intersection for axle center rotates, to change aforementioned angle in step B.
Priority Applications (1)
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| CN201310303445.2A CN104299608A (en) | 2013-07-17 | 2013-07-17 | Sound absorbing noise reduction assembly and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310303445.2A CN104299608A (en) | 2013-07-17 | 2013-07-17 | Sound absorbing noise reduction assembly and method thereof |
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| CN106531142A (en) * | 2016-10-20 | 2017-03-22 | 中国电力科学研究院 | Noise-reducing device for transformer substation |
| CN106988238A (en) * | 2017-04-27 | 2017-07-28 | 江苏中驰环保工程有限公司 | Optical barrier |
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| CN109690669A (en) * | 2016-09-13 | 2019-04-26 | 富士胶片株式会社 | Noise reduction structure and anti-system for electrical teaching |
| CN110595052A (en) * | 2019-09-20 | 2019-12-20 | 武汉源海博创科技有限公司 | Silencer with adjustable and excellent performance adapting to air inlet parameters |
| CN116857474A (en) * | 2023-07-03 | 2023-10-10 | 广州市全风机电设备有限公司 | Folded plate type silencer |
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Application publication date: 20150121 |