CN111809756A - Sound absorption and insulation board - Google Patents
Sound absorption and insulation board Download PDFInfo
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- CN111809756A CN111809756A CN202010733830.0A CN202010733830A CN111809756A CN 111809756 A CN111809756 A CN 111809756A CN 202010733830 A CN202010733830 A CN 202010733830A CN 111809756 A CN111809756 A CN 111809756A
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 202
- 238000009413 insulation Methods 0.000 title claims abstract description 83
- 238000005192 partition Methods 0.000 claims abstract description 61
- 238000013016 damping Methods 0.000 claims description 29
- 238000009792 diffusion process Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims 8
- 230000000694 effects Effects 0.000 abstract description 18
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- 239000006260 foam Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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- 239000000565 sealant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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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
- E04B1/86—Sound-absorbing elements slab-shaped
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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
- E04B1/74—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
- E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
- E04B2001/8433—Tray or frame type panels or blocks, with or without acoustical filling with holes in their face
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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
- E04B2001/8457—Solid slabs or blocks
-
- 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
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a sound absorption and insulation board, which comprises a sound absorption layer; the sound absorbing layer comprises at least one sound absorbing unit comprising a plurality of sound absorbing modules; a sound absorption cavity is arranged in the sound absorption module, and a sound absorption hole communicated with the outside is formed in the sound absorption cavity; at least one partition plate is arranged in the sound absorption chamber; along the length direction of the partition board, the head end of the partition board spirally diffuses and extends towards the periphery; in the plurality of sound absorption modules, at least two kinds of sound absorption modules exist, and the number of the partition plates arranged in the sound absorption modules is different. The sound absorption and insulation board provided by the invention greatly improves the sound transmission path and effectively improves the low-frequency sound absorption coefficient of the sound absorption module; and the sound absorption unit of this sound absorption baffle resonant frequency is various, has multistage high absorption peak value, and the formant has better sound absorption to the low frequency simultaneously in low frequency range, and the sound absorption effect strengthens by a wide margin.
Description
Technical Field
The invention belongs to the technical field of building noise processing, and particularly relates to a sound absorption and insulation board.
Background
In the aspect of noise absorption and reduction, the common slotted wood acoustic board in the building field, the acoustic wool, the honeycomb plate ceiling and the like cannot be determined and adjusted due to the single structure and the micropore structure, the sound absorption effect is mostly concentrated at medium and high frequencies, and the low-frequency sound absorption effect is poor. In the aspect of building sound insulation, it is important at present to be multilayer gypsum board structure, the sound insulation effect of this structure is related to the surface density of structure, surface density is big more, the sound insulation effect is better, but when not absorbing sound, because the sound insulation board surface is comparatively level and smooth, often can aggravate the reflection in the space, for this reason, often need paste the sound absorbing layer on the sound insulation board once more after the installation sound insulation board, the construction is too loaded down with trivial details, and the sound insulation, the sound absorption effect is unsatisfactory, and concentrate on the medium-high frequency section, can't solve low frequency noise.
For the above reasons, it is desirable to design a sound absorption and insulation decorative plate suitable for electromechanical equipment rooms, functional halls and the like for buildings, which has good low-frequency sound absorption effect and good damping and sound insulation effect.
Disclosure of Invention
The invention provides a sound absorption and insulation board for solving the technical problems in the background technology.
The technical scheme of the invention is as follows:
a sound absorption and insulation board comprises a sound absorption layer; the sound absorbing layer comprises at least one sound absorbing unit comprising a plurality of sound absorbing modules; a sound absorption cavity is arranged in the sound absorption module, and a sound absorption hole communicated with the outside is formed in the sound absorption cavity; at least one partition plate is arranged in the sound absorption chamber; along the length direction of the partition board, the head end of the partition board spirally diffuses and extends towards the periphery; in the plurality of sound absorption modules, at least two kinds of sound absorption modules exist, and the number of the partition plates arranged in the sound absorption modules is different.
Further preferably, when a plurality of partition plates are arranged in the sound absorption module, the length of the plurality of partition plates is inconsistent.
Further preferably, the head end of the partition plate extends to the edge of the sound absorption cavity from the middle of the sound absorption cavity to the periphery in a spiral diffusion mode; the partition plates are arranged in a plurality of embedded modes.
Further preferably, the sound absorption module comprises a module body, the module body is provided with a concave cavity, at least one layer of perforated plate is covered at an opening at the upper end of the cavity, and the perforated plate and the cavity jointly form the sound absorption cavity.
Further preferably, a plurality of layers of the perforated plates are arranged, each layer of the perforated plates is provided with at least one micropore area, and the micropore areas are internally provided with a plurality of sound absorption holes.
Further preferably, the microporous regions between the perforated plates of adjacent layers are arranged in a staggered manner.
Further preferably, the microporous region of the perforated plate of the first layer in direct contact with the chamber is located opposite or near the head end of the partition.
Further preferably, a plurality of the partition plates are arranged in the chamber, and the first layer of the perforated plate is provided with one corresponding micropore area at a position opposite to or adjacent to the head end of each partition plate.
Further preferably, the diameter or equivalent diameter of the sound absorption holes is 01-1.8 mm; the thickness t of the perforated plate is 0.2-1.0mm, and when the plurality of perforated plates are arranged, the interval between the adjacent perforated plates is 0.5t-15 t.
Further preferably, the sound-proof and damping layer is also included; the damping sound insulation layer comprises a first sound insulation plate, a second sound insulation plate and a damping layer arranged between the first sound insulation plate and the second sound insulation plate, and the sound absorption layer is in close contact with the first sound insulation plate; the first sound insulation plate is an aluminum alloy perforated plate, and the aperture ratio of the first sound insulation plate is greater than 20%; the thickness of the first sound insulation plate is 0.6-1.2 mm; the damping layer is made of porous materials or damping materials; the second sound insulation plate is a metal plate, and the thickness of the metal plate is 1.5-5 mm.
The invention provides a sound absorption and insulation board, which has the following advantages and positive effects compared with the prior art:
1. the sound absorption layer of the sound absorption and insulation plate comprises at least one sound absorption unit, the sound absorption unit is internally composed of a plurality of sound absorption modules, and at least one partition plate is arranged in each sound absorption module; the head end of the baffle plate is spirally diffused and extended towards the periphery along the length direction of the baffle plate, so that the sound propagation path is greatly improved, the low-frequency sound absorption coefficient of the sound absorption module is effectively improved, the sound absorption bandwidth of the sound absorption module is effectively widened, the sound of more frequency bands is absorbed, and the sound absorption effect is better; furthermore, the number of the partition plates arranged in the sound absorption modules is different, so that the resonance frequency of the sound absorption modules is different, when a plurality of different sound absorption modules are arranged in a single sound absorption unit, the resonance frequency of the sound absorption modules in the sound absorption unit is various, so that the sound absorption modules can be matched with more sound wave frequencies to generate resonance, the consumed sound energy is the most during resonance, the sound absorption units have multi-step high absorption peak values, and each sound absorption peak value has a wider sound absorption frequency band; and the more the number of the baffle plates is arranged, the lower the resonant frequency of the sound absorption module is, the lower the resonant peak is in the low frequency range, and the sound absorption unit has better sound absorption property to low frequency, so that the sound absorption effect of the sound absorption unit is greatly enhanced.
2. The sound absorption and insulation plate also comprises a damping sound insulation layer, the sound absorption layer and the damping sound insulation layer are tightly connected to form a decorative plate integrating sound absorption and insulation, and meanwhile, the sound absorption and insulation plate plays a sound absorption and insulation role.
Drawings
The above and other features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic view of a sound absorbing and insulating panel according to embodiment 1 of the present invention;
FIG. 2 is a sectional view of a sound-absorbing/insulating panel according to embodiment 1 of the present invention;
fig. 3 is a schematic view of a sound absorption module in embodiment 1 of the present invention;
fig. 4 is a sectional view of a sound absorption module in example 1 of the present invention;
fig. 5 is a schematic view illustrating the installation of the sound absorbing and insulating panel in embodiment 1 of the present invention;
fig. 6 is a graph showing the sound absorption coefficient of the sound-absorbing and insulating panel in example 1 of the present invention.
Description of the symbols:
1-a sound-absorbing layer; 2-a sound absorption module; 3-a perforated plate; 4-a sound-absorbing chamber; 5-a separator; 6-sound absorption micropores; 7-damping sound-insulating layer; 8-a first sound barrier; 9-a second sound insulation board; 10-damping layer.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
Referring to fig. 1 to 6, the present embodiment provides a sound absorption and insulation panel, including a sound absorption layer 1, where the sound absorption layer 1 includes at least one sound absorption unit, and the sound absorption unit includes a plurality of sound absorption modules 2; the sound absorption module 2 is provided with a sound absorption cavity 4, and the sound absorption cavity 4 is provided with a sound absorption hole communicated with the outside; at least one partition plate 5 is arranged in the sound absorption cavity 4; along the length direction of the partition board 5, the head end of the partition board 5 spirally diffuses and extends to the periphery; in the plurality of sound absorption modules 2, there are at least two kinds of sound absorption modules 2, and the number of the partition plates 5 arranged therein is not the same.
According to the invention, the baffle 5 is arranged in the sound absorption chamber 4, and the head end of the baffle 5 extends towards the periphery in a spiral diffusion manner along the length direction of the baffle 5, so that the propagation path of sound is greatly prolonged, and the sound absorption coefficient of the sound absorption module 2 is improved; there are two kinds of sound absorption modules further in the same sound absorption unit at least, and the baffle quantity that sets up in it is different to two kinds of sound absorption modules's resonant frequency is different, and sound absorption frequency is various, thereby can coincide and take place the resonance with more acoustic wave frequency, can have multistage high absorption peak value in the single sound absorption unit, consumes more acoustic energy, strengthens sound absorption effect by a wide margin.
Further, referring to fig. 3, a plurality of partition plates 5 are disposed in the preferred sound absorption module 2, and the lengths of the plurality of partition plates 5 are not uniform; the length is the length of the partition board 5 extending into a straight line, the longer the length is, the longer the sound wave path of the formed spiral cavity is, the higher the sound absorption coefficient is, the sound absorption is effectively widened, and more sound waves are absorbed. And the more the quantity that baffle 5 set up, the lower the resonant frequency of sound absorption module 2, the formant has better sound absorption to the low frequency in low frequency range to sound absorption module 2 can absorb more low frequency sound wave, and the sound absorption effect improves by a wide margin. For example, in the present embodiment, referring to fig. 3, two partition plates 5 are provided, and the lengths of the two partition plates 5 are 17mm and 23mm, respectively. Of course, in other embodiments, there is no limitation on the number of the partition boards 5, and the length of the partition boards 5 is also not limited, for example, three partition boards 5 are provided, and the lengths of the three partition boards 5 are 42mm, 51mm, and 70mm, respectively.
Further preferably, in this embodiment, referring to fig. 3, the head end of the partition extends from the middle of the sound absorption chamber to the periphery of the sound absorption chamber in a spiral diffusion manner; the head end of the partition extends to the edge of the sound absorption cavity from the middle part to the periphery in a spiral diffusion mode, so that the partition can be ensured to have the longest extension length, the sound propagation path is long enough, and the sound absorption coefficient of the sound absorption cavity is effectively improved. Of course, in other embodiments, the position of the spiral diffusion initiated at the head end of the baffle plate is not limited to the above, and for example, the spiral diffusion may be initiated from one side of the sound absorption chamber
Further preferably, in this embodiment, referring to fig. 3, a plurality of partition plates are arranged, the partition plates are embedded with each other, and no intersection is generated between the partition plates, so that it is ensured that sound has a plurality of propagation paths and the paths are not interrupted, the length is long enough, the low-frequency sound absorption coefficient of the sound absorption module is effectively improved, and the sound absorption bandwidth of the sound absorption module is effectively widened. Of course, in other embodiments, when a plurality of partition plates are provided, the arrangement of the plurality of partition plates is not limited to the above or shown in the drawings, for example, the plurality of partition plates are dispersedly disposed in the sound absorption chamber, and each partition plate spirally spreads from the head end to the periphery.
In this embodiment, referring to fig. 4, the sound absorption module 2 includes a module body, the module body has a concave cavity, the opening at the upper end of the cavity is covered with at least one layer of perforated plate 3, the perforated plate 3 and the cavity together form a closed sound absorption cavity 4, and the perforated plate and the air layer in the cavity form a resonance sound absorption structure, so that the sound absorption module forms a good sound absorption structure. The perforated plate 3 and the chamber are bonded by hot pressing, but in other embodiments, the manner of bonding the two is not limited to the above, for example, the two are bonded by other adhesive substances. In this embodiment, referring to fig. 3, a plurality of perforated plates 3 are provided, and each perforated plate 3 is provided with at least one micro-porous region in which a plurality of sound absorbing holes are provided. Sound enters the cavity from the sound absorption hole, the upper perforated plate 3 and an air layer behind the upper perforated plate form a resonance sound absorption structure, the sound absorption performance of a low frequency band is further improved, a wider sound absorption frequency band can be obtained, and the requirement of absorbing more frequency sounds is met. The number of layers of the perforated plate is not limited in this embodiment, for example, 2 layers or 3 layers of perforated plates are provided.
Further preferably, in this embodiment, the micro-porous regions between the perforated plates of adjacent layers are arranged in a staggered manner. The micropore areas are arranged in a staggered mode, when sound enters from the upper layer of perforated plate, the sound cannot directly penetrate through the micropore area of the adjacent lower layer of perforated plate, so that the sound resonates with the air layer between the sound and the air layer, the consumption of sound energy is improved, and the sound absorption coefficient of the sound absorption chamber is favorably improved; and the micropore areas are arranged in a staggered mode, so that the sound transmission path can be changed, and the sound absorption frequency band is widened, therefore, the sound absorption module 2 can absorb sounds with more frequencies, and the sound absorption effect is better. Of course, in other embodiments, the positions of the micro-porous regions between the multi-layered perforated plates 3 are not limited to the above, and for example, the micro-porous regions between the multi-layered perforated plates may partially overlap or entirely overlap.
In this embodiment, referring to fig. 3, the micro-porous area on the first perforated plate directly contacting with the opening at the upper end of the recessed chamber is opposite to or close to the head end of the partition plate; it is ensured that sound enters the sound-absorbing chamber from the center of the spirally arranged partition plate, thereby prolonging the longest propagation path of sound.
Further preferably, in this embodiment, when the plurality of partition plates are disposed in the chamber, a micropore area is correspondingly disposed at a position on the first layer of perforated plate opposite to or adjacent to the head end of each partition plate, so that sound is ensured to enter the sound absorption chamber from the center of each spirally arranged partition plate, and the longest propagation path of sound is further extended. In this embodiment, because the head ends of the plurality of partition plates extend from the middle of the sound absorption chamber in a spiral diffusion manner, and the head ends of the plurality of partition plates are adjacent or overlapped, a plurality of micropore areas correspondingly arranged on the plurality of partition plates are overlapped, as shown in fig. 3, only one micropore area is equivalently arranged, so that sound can enter a sound propagation channel formed by the partition plates through the spiral centers of the partition plates, and the sound is ensured to have the longest propagation path.
In the present embodiment, the sound absorption holes 6 are circular or polygonal, and the diameter or equivalent diameter of the sound absorption holes 6 is 01-1.8 mm; the diameter of the sound absorption hole is smaller, the perforated plate 3 provided with the sound absorption hole is named as a micro-perforated plate, the micro-perforated plate has a wider sound absorption frequency band than that of a common perforated plate, and the sound absorption effect is better; and the sound absorption structure of the micro-perforated plate is more suitable for special environments such as high-speed airflow, high temperature or humidity and the like. Of course, in other embodiments, the diameter of the sound absorption hole is not limited to the above-mentioned size, and for example, the sound absorption hole may have a larger diameter; of course, in other embodiments, the shape of the sound-absorbing holes is not limited.
In the present embodiment, the number of the sound absorbing micro-holes 6 is not uniform among the plurality of sound absorbing modules 2. For example, in one sound absorption unit, 20 sound absorption micropores 6 are formed in the perforated plate 3 of a part of the sound absorption modules 2, and 25 sound absorption micropores 6 are formed in the perforated plate 3 of the other part of the sound absorption modules 2. Of course, in other embodiments, the number of the sound absorption micro holes 6 between the sound absorption modules 2 may be the same, and is not limited herein; of course, in other embodiments, the number of sound absorbing micro holes 6 is not limited to the above.
In the embodiment, the thickness t of the perforated plate 3 is 0.2-1.0mm, and when a plurality of layers of perforated plates 3 are arranged, the interval between adjacent perforated plates 3 is 0.5t-15t, so that an air layer exists between two adjacent layers of perforated plates 3, and the upper layer of perforated plate 3 and the air layer between the upper layer of perforated plate and the air layer form a resonance sound absorption structure, which is beneficial to improving the sound absorption performance of a low frequency band; wherein the perforated plates 3 are adhered together by filling adhesive material between the adjacent perforated plates, although in other embodiments, the manner of connection between the adjacent perforated plates 3 is not limited.
In this embodiment, referring to fig. 1 and 2, the sound absorption and insulation board further includes a damping sound insulation layer 7, the sound absorption layer 1 is installed on the damping sound insulation layer 7, and the surface of the sound absorption cavity facing away from the perforated plate 3 is tightly connected with the damping sound insulation layer 7. Sound-absorbing layer 1 and damping sound insulation layer 7 zonulae occludens form and inhale the integrative building decorative panel of sound insulation, play the effect of sound absorption sound insulation simultaneously, when building uses, the installation of once only can accomplishing sound absorption sound insulation board, need not to distribute installation sound-absorbing layer 1 and sound insulation layer, simplifies the work progress, effectively improves work efficiency.
Specifically, in the present embodiment, referring to fig. 2, the damping and sound-insulating layer 7 includes a first sound-insulating plate 8, a second sound-insulating plate 8, and a damping layer 9 disposed therebetween, and the sound-absorbing layer 1 is in close contact with the first sound-insulating plate 8. Wherein first sound proof board 8, second sound proof board 8 are favorable to hindering the sound propagation, and trap sound between two-layer sound proof board, and set up damping layer 9 between the two and be used for increasing the damping loss of sound vibration, consume the acoustic energy, improve the sound absorption coefficient.
In this embodiment, it is further preferable that the first sound insulating plate 8 is an aluminum alloy perforated plate, and the aperture ratio thereof is greater than 20%; the thickness of the first sound insulation board 8 is 0.6-1.2 mm. The first sound insulation plate 8 is perforated to facilitate sound to enter the damping and sound insulation layer 7; further, the first sound insulation plate 8 is preferably made of an aluminum alloy, the larger the surface density of the sound insulation plate is, the better the sound insulation effect is, and in other embodiments, the material of the first sound insulation plate 8 is not limited to the above, and may be other metal or non-metal materials.
In this embodiment, the damping layer 9 is made of a porous material or damping material, and the porous material is generally: the damping layer 9 is made of glass fiber cotton, rock wool, foam and the like, the damping material is rubber mud and the like, and the manufacturing material of the damping layer 9 is not limited and can be selected according to actual requirements.
In this embodiment, the second sound insulation board 8 is a metal board, and the thickness of the metal board is 1.5-5 mm. The larger the surface density of the sound insulation board is, the better the sound insulation effect is, so that the second sound insulation board 8 is preferably a metal board, and of course, in other embodiments, the material for manufacturing the second sound insulation board 8 is not limited.
The construction scheme of the decorative plate is shown in figure 5, firstly, a light steel keel support is installed on a wall body, a plurality of sound absorption and insulation plates are installed on the light steel keel support, and the sound absorption and insulation plates are sealed through sealant to prevent sound transmission.
By adopting the sound absorption and insulation plate, the sound absorption coefficient a of the sound absorption and insulation plate is measured as shown in fig. 6, and as can be seen from fig. 6, the sound absorption coefficient a of the sound absorption and insulation plate is large and has a plurality of resonance peaks, so that the sound absorption effect is good in the frequency range of 600-plus-2400 Hz, the sound absorption broadband is extremely wide, and the low-frequency broadband efficient sound absorption is realized.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (10)
1. A sound absorption and insulation board is characterized by comprising a sound absorption layer;
the sound absorbing layer comprises at least one sound absorbing unit comprising a plurality of sound absorbing modules; a sound absorption cavity is arranged in the sound absorption module, and a sound absorption hole communicated with the outside is formed in the sound absorption cavity; at least one partition plate is arranged in the sound absorption chamber; along the length direction of the partition board, the head end of the partition board spirally diffuses and extends towards the periphery;
in the plurality of sound absorption modules, at least two kinds of sound absorption modules exist, and the number of the partition plates arranged in the sound absorption modules is different.
2. The sound absorption and insulation integrated composite board according to claim 1, wherein when a plurality of partition boards are arranged in the sound absorption module, the length of the plurality of partition boards is not uniform.
3. The sound absorption and insulation integrated composite board according to claim 1, wherein the head end of the partition board extends from the middle of the sound absorption chamber to the edge of the sound absorption chamber in a spiral diffusion manner;
the partition plates are arranged in a plurality of embedded modes.
4. The sound absorption and insulation integrated composite plate as claimed in claim 1, wherein the sound absorption module comprises a module body, the module body is provided with a concave chamber, at least one layer of perforated plate is covered at an opening at the upper end of the chamber, and the perforated plate and the chamber together form the sound absorption chamber.
5. The sound absorption and insulation integrated composite plate according to claim 5, wherein a plurality of layers of the perforated plates are arranged, each layer of the perforated plates is provided with at least one micropore area, and a plurality of sound absorption holes are arranged in the micropore areas.
6. The sound absorption and insulation integrated composite plate as claimed in claim 6, wherein the micro-porous regions between the perforated plates of adjacent layers are arranged in a staggered manner.
7. The sound absorption and insulation integrated composite plate as claimed in claim 6, wherein the micro-porous area on the perforated plate of the first layer directly contacting with the chamber is opposite to or close to the head end of the partition plate.
8. The sound absorption and insulation integrated composite board according to claim 6 or 7, wherein a plurality of the partition boards are arranged in the chamber, and a microporous region is correspondingly arranged at a position on the first layer of the perforated plate opposite to or adjacent to the head end of each partition board.
9. The sound absorption and insulation integrated composite board according to claim 6, wherein the diameter or equivalent diameter of the sound absorption holes is 01-1.8 mm; the thickness t of the perforated plate is 0.2-1.0mm, and when the plurality of perforated plates are arranged, the interval between the adjacent perforated plates is 0.5t-15 t.
10. The sound absorption and insulation board according to claim 1, further comprising a damping and sound insulation layer; the damping sound insulation layer comprises a first sound insulation plate, a second sound insulation plate and a damping layer arranged between the first sound insulation plate and the second sound insulation plate, and the sound absorption chamber is in close contact with the first sound insulation plate;
the first sound insulation plate is an aluminum alloy perforated plate, and the aperture ratio of the first sound insulation plate is greater than 20%; the thickness of the first sound insulation plate is 0.6-1.2 mm;
the damping layer is made of porous materials or damping materials;
the second sound insulation plate is a metal plate, and the thickness of the metal plate is 1.5-5 mm.
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|---|---|---|---|
| CN202010733830.0A CN111809756A (en) | 2020-07-27 | 2020-07-27 | Sound absorption and insulation board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010733830.0A CN111809756A (en) | 2020-07-27 | 2020-07-27 | Sound absorption and insulation board |
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| CN111809756A true CN111809756A (en) | 2020-10-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124256A (en) * | 2021-04-09 | 2021-07-16 | 株洲时代新材料科技股份有限公司 | Method for improving noise reduction effect of low-frequency noise reduction liner of pipeline and sound liner |
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2020
- 2020-07-27 CN CN202010733830.0A patent/CN111809756A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124256A (en) * | 2021-04-09 | 2021-07-16 | 株洲时代新材料科技股份有限公司 | Method for improving noise reduction effect of low-frequency noise reduction liner of pipeline and sound liner |
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