CN113152703B - Noise reduction structure for building outer wall - Google Patents
Noise reduction structure for building outer wall Download PDFInfo
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- CN113152703B CN113152703B CN202110489958.1A CN202110489958A CN113152703B CN 113152703 B CN113152703 B CN 113152703B CN 202110489958 A CN202110489958 A CN 202110489958A CN 113152703 B CN113152703 B CN 113152703B
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- 230000009467 reduction Effects 0.000 title claims abstract description 16
- 238000010521 absorption reaction Methods 0.000 claims description 82
- 239000000463 material Substances 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 4
- 239000003063 flame retardant Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 8
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- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a noise reduction structure for an external wall of a building, which comprises: the first reflecting layer is laid on the outer surface of the outer wall; a sound absorbing layer laid on the first reflecting layer; and the second reflecting layer is laid on the sound absorbing layer. The invention has the advantages of reflecting, absorbing, reflecting and absorbing the sound wave in sequence, and remarkably improving the noise reduction function.
Description
Technical Field
The invention relates to the field of construction. More particularly, the present invention relates to a noise reduction structure for an exterior wall of a building.
Background
An important component of a building is a wall used for bearing, enclosing or separating spaces. The building is usually formed by surrounding an outer wall, although the building has a certain sound blocking function, the noise reduction requirement of urban life can not be met far away, or the noise of elevated traffic or a noisy market is caused, and the frequency and the intensity of various sounds are different, so that the difficulty in solving the noise reduction problem is improved, and therefore, how to arrange the structure suitable for reducing the noise of the outer wall of the urban outer building is worthy of study.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide a noise reduction structure for the outer wall of the building, sound waves are reflected, absorbed, reflected and absorbed in sequence and circularly reciprocate, and the noise reduction function can be obviously improved.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a noise reduction structure for an exterior wall of a building, including:
the first reflecting layer is laid on the outer surface of the outer wall;
a sound absorbing layer laid on the first reflecting layer;
and the second reflecting layer is laid on the sound absorbing layer.
Preferably, the fireproof coating further comprises a fireproof layer which is laid on the second reflecting layer.
Preferably, the fireproof coating further comprises a waterproof layer which is laid on the fireproof layer.
Preferably, the sound absorption layer comprises a first sound absorption unit, a second sound absorption unit and a third sound absorption unit which are sequentially laid from inside to outside, wherein the average sound absorption coefficient of the first sound absorption unit under three frequencies of 125Hz, 250Hz and 500Hz is not less than 0.4, the average sound absorption coefficient of the second sound absorption unit under three frequencies of 1000Hz, 2000Hz and 4000Hz is not less than 0.4, and the average sound absorption coefficient of the third sound absorption unit under three frequencies of 500Hz, 2000Hz and 5000Hz is not less than 0.4.
Preferably, a plurality of honeycomb holes are formed in the first sound absorbing unit, the second sound absorbing unit and the third sound absorbing unit.
Preferably, first sound absorption unit the sound unit is inhaled to the second the sound unit is inhaled to the third all adopts the centrifugal glass cotton to make, and is located first sound absorption unit with the second is inhaled and still is equipped with first articulamentum between the sound unit, is located the sound unit is inhaled to the second with the third is inhaled and still is equipped with the second articulamentum between the sound unit, first articulamentum adopts polyester fiber to inhale the sound cotton and makes, the second articulamentum adopts the non-woven fabrics to make.
Preferably, the first reflective layer includes a thin plate, a nano carbon layer sprayed on the thin plate, and a plurality of protrusions arranged on the nano carbon layer at intervals, and the first reflective layer and the protrusions are made of aluminum alloy.
Preferably, the fire-proof layer is made of glass fiber.
Preferably, the waterproof layer is formed by coating a waterproof material.
Preferably, the material of the second reflective layer is an aluminum alloy.
The invention at least comprises the following beneficial effects:
first, when sound jets into the outer wall, when needing to inwards propagate, can be earlier by the reflection of second reflection stratum, thereby reduce the sound wave volume of invasion sound absorbing layer, and the sound that has not been reflected successfully to have got into sound absorbing layer can be absorbed by sound absorbing layer and consumed a large amount, absorb completely even, if sound remains to enter into first reflection stratum in addition, then first reflection stratum can be with sound reflection with sound absorbing layer, absorb once more by sound absorbing layer, so relapse, can penetrate the outer wall and get into indoor sound and show and be weakened, can promote the whole function of making an uproar of falling of structure of making an uproar.
Secondly, a technology of step-by-step absorption under three gradient frequencies is adopted, a high-frequency main sound absorption structure (a second sound absorption unit) is arranged in the middle layer, low-frequency main sound absorption structures (a first sound absorption unit and a third sound absorption unit) are arranged on two sides of the middle layer, sound is absorbed alternately, so that the overall sound absorption effect is improved, and through measurement and calculation, when the average sound absorption coefficients corresponding to the first sound absorption unit, the second sound absorption unit and the third sound absorption unit are respectively 0.4, 0.45 and 0.4, the average sound absorption systems of the sound absorption layers under seven frequencies of 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz and 5000Hz reach 0.92.
Thirdly, the nano carbon layer utilizes the particle diameter advantage, interferes the incident sound wave from the nano size range, can obviously increase the reflection angle, further reduces the sound wave and penetrates through the first reflecting layer to propagate, and the raised setting can increase the reflection area, thereby reducing the sound wave and penetrating through the first reflecting layer.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a transverse cross-sectional view of the noise reducing structure of one aspect of the present invention;
FIG. 2 is a detail view of the sound-absorbing layer of one embodiment of the present invention;
FIG. 3 is a detailed view of the first reflective layer of one embodiment of the present invention;
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 3, the present invention provides a noise reduction structure for an exterior wall of a building, comprising:
the first reflecting layer 2 is laid on the outer surface of the outer wall 1, and the first reflecting layer 2 can be made of a thin plate 21, such as a metal material, or can be made of a smooth mirror surface, so that the reflecting strength is increased;
the sound absorption layer 3 is laid on the first reflection layer 2, and the sound absorption layer 3 can be made of sound absorption materials;
and a second reflection layer 4 laid on the sound absorption layer 3, wherein the second reflection layer 4 may be made of the same material as the first reflection layer 2 or a different material.
In the above technical scheme, when sound is shot into the outer wall 1, when needing to be transmitted inwards, the sound is reflected by the second reflecting layer 4 first, thereby reducing the sound wave quantity invading the sound absorption layer 3, and the sound which is not reflected and successfully enters the sound absorption layer 3 is absorbed by the sound absorption layer 3 to consume a large amount, even absorbed completely, if the sound is remained to enter the first reflecting layer 2, the sound is reflected and added to the sound absorption layer 3 by the first reflecting layer 2, and is absorbed again by the sound absorption layer 3, so repeatedly, the sound which can penetrate through the outer wall 1 and enter the room is obviously weakened, and the noise reduction function of the whole noise reduction structure can be improved.
In another technical scheme, the fireproof layer comprises a fireproof layer 5 which is laid on the second reflecting layer 4. Because the material of sound absorbing layer 3 is mostly easy type of lighting a fire, for example polyester fiber inhales sound cotton, foaming cotton etc. sets up flame retardant coating 5 and can slow down stretching of conflagration.
In another technical scheme, the fireproof coating further comprises a waterproof layer 6 which is laid on the fireproof layer 5. Because the outer wall 1 often receives the wind and drenches, set up waterproof layer 6 and can reduce moisture and get into sound absorbing layer 3 to avoid influencing sound absorbing layer 3's sound absorbing effect.
In another technical solution, the sound absorption layer 3 includes a first sound absorption unit 31, a second sound absorption unit 32, and a third sound absorption unit 33, which are sequentially laid from inside to outside, wherein an average sound absorption coefficient of the first sound absorption unit 31 at three frequencies of 125Hz, 250Hz, and 500Hz is not less than 0.4, an average sound absorption coefficient of the second sound absorption unit 32 at three frequencies of 1000Hz, 2000Hz, and 4000Hz is not less than 0.4, and an average sound absorption coefficient of the third sound absorption unit 33 at three frequencies of 500Hz, 2000Hz, and 5000Hz is not less than 0.4.
In the above technical solution, a technology of step-by-step absorption at three gradient frequencies is adopted, and a main sound absorption structure (second sound absorption unit 32) with a high frequency is disposed in the middle layer, and main sound absorption structures (first sound absorption unit 31 and third sound absorption unit 33) with a low frequency are disposed on both sides of the middle layer, so as to alternately absorb sound, so as to improve the overall sound absorption effect of the whole full frequency, and through measurement and calculation, when average sound absorption coefficients corresponding to the first sound absorption unit 31, the second sound absorption unit 32, and the third sound absorption unit 33 are 0.4, 0.45, and 0.4, average sound absorption coefficients of the sound absorption layer 3 at seven frequencies of 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz, and 5000Hz reach 0.92.
In another technical solution, a plurality of honeycomb holes are formed in each of the first sound absorbing unit 31, the second sound absorbing unit 32, and the third sound absorbing unit 33. The honeycomb holes can improve the sound absorption effect and improve the sound absorption coefficient.
In another technical scheme, first sound absorption unit 31, sound unit 32 is inhaled to the second sound absorption unit 33 all adopts centrifugal glass cotton to make, and is located sound unit 31 is inhaled to the first sound absorption unit 31 with still be equipped with first articulamentum 34 between the sound unit 32 to the second, be located sound unit 32 is inhaled to the second sound with still be equipped with second articulamentum 35 between the sound unit 33 to the third, sound cotton is inhaled to first articulamentum 34 adoption polyester fiber and is made, second articulamentum 35 adopts the non-woven fabrics to make.
In the above technical solution, the first connecting layer 34 and the second connecting layer 35 are arranged to increase the complexity of the sound absorption process, i.e. increase the sound absorption path, and to increase the connection stability of the three sound absorption units.
In another technical solution, the first reflective layer 2 includes a thin plate 21, a nano-carbon layer 22 sprayed on the thin plate 21, and a plurality of protrusions 23 arranged on the nano-carbon layer 22 at intervals, and the first reflective layer 2 and the protrusions 23 are made of aluminum alloy.
In the above technical solution, the nano carbon layer 22 utilizes the advantage of particle size, interferes the incident sound wave from the nano size range, can significantly increase the reflection angle, further reduces the sound wave from penetrating the first reflective layer 2 to propagate, and the protrusion 23 can increase the reflection area, thereby reducing the sound wave from penetrating the first reflective layer 2.
The technical scheme can also comprise the following technical details so as to better realize the technical effects:
the arch 23 is the ball shape, can also spray nano carbon layer 22 on the surface of arch 23, the shape of ball can change reflection angle when receiving the sound wave of various incident angles, and is not the same to the plane shape reflection, and the original road reflection, the effect of multi-angle reflection can disperse each way sound wave to weaken the additional action of sound wave, spraying nano carbon layer 22 can be at the amplitude of nanometer attenuation sound wave, in order to reach the effect that reduces sound.
In another technical scheme, the fire-proof layer 5 is made of glass fiber. Glass fibers are an excellent thermal insulation material and fire barrier material, generally corroded only by concentrated alkali, hydrofluoric acid and concentrated phosphoric acid, and also have excellent electrical insulation properties.
In another technical scheme, the waterproof layer 6 is formed by coating a waterproof material. The waterproof material can adopt a silicone-acrylate exterior wall coating, which is short for organosilicon acrylate building exterior wall coating, is a novel high-grade exterior wall coating, has excellent weather resistance (the service life is more than 10 years) and stain resistance, does not contain toxic solvents, has no pollution to the environment, is harmless to human bodies, and meets the requirements of the current environment-friendly green building materials.
In another technical solution, the material of the second reflective layer 4 is an aluminum alloy. The aluminum alloy is a sound barrier and has excellent reflection effect.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (8)
1. Noise reduction structure of building outer wall, its characterized in that includes:
the first reflecting layer is laid on the outer surface of the outer wall;
a sound absorbing layer laid on the first reflecting layer;
a second reflection layer laid on the sound absorption layer;
the sound absorption layer comprises a first sound absorption unit, a second sound absorption unit and a third sound absorption unit which are sequentially laid from inside to outside, wherein the average sound absorption coefficient of the first sound absorption unit under three frequencies of 125Hz, 250Hz and 500Hz is 0.4, the average sound absorption coefficient of the second sound absorption unit under three frequencies of 1000Hz, 2000Hz and 4000Hz is 0.45, and the average sound absorption coefficient of the third sound absorption unit under three frequencies of 500Hz, 2000Hz and 5000Hz is 0.4;
first sound absorption unit the sound unit is inhaled to the second sound the unit is all adopted centrifugal glass cotton to make to the third sound absorption unit, and be located first sound absorption unit with the second is inhaled and still is equipped with first articulamentum between the sound unit, is located the sound unit is inhaled to the second with the third is inhaled and still is equipped with the second articulamentum between the sound unit, first articulamentum adopts polyester fiber to inhale the sound cotton and makes, the second articulamentum adopts the non-woven fabrics to make.
2. A noise reducing structure for an exterior wall of a building as claimed in claim 1, further comprising a fire retardant layer applied on said second reflective layer.
3. A noise reducing structure for an exterior wall of a building as claimed in claim 2, further comprising a waterproof layer applied on the fire-retardant layer.
4. The noise reduction structure for the external wall of the building as claimed in claim 1, wherein the first sound absorption unit, the second sound absorption unit and the third sound absorption unit are formed with a plurality of honeycomb holes therein.
5. The noise reduction structure for the external wall of the building as claimed in claim 1, wherein the first reflective layer comprises a thin plate, a nano carbon layer coated on the thin plate, and a plurality of protrusions spaced on the nano carbon layer, and both the first reflective layer and the protrusions are made of aluminum alloy.
6. A noise reducing structure for an exterior wall of a building as claimed in claim 2, wherein the fire retardant layer is made of glass fiber.
7. A noise reducing structure for an exterior wall of a building as claimed in claim 3, wherein the waterproof layer is formed by coating a waterproof material.
8. The noise reducing structure for the exterior wall of a building as claimed in claim 1, wherein the material of the second reflective layer is an aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110489958.1A CN113152703B (en) | 2021-05-06 | 2021-05-06 | Noise reduction structure for building outer wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110489958.1A CN113152703B (en) | 2021-05-06 | 2021-05-06 | Noise reduction structure for building outer wall |
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| Publication Number | Publication Date |
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| CN113152703A CN113152703A (en) | 2021-07-23 |
| CN113152703B true CN113152703B (en) | 2022-01-25 |
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| CN202110489958.1A Active CN113152703B (en) | 2021-05-06 | 2021-05-06 | Noise reduction structure for building outer wall |
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| CN113152703A (en) | 2021-07-23 |
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