CN208803657U - A kind of low frequency phonon soundproof plate - Google Patents
A kind of low frequency phonon soundproof plate Download PDFInfo
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- CN208803657U CN208803657U CN201821118606.5U CN201821118606U CN208803657U CN 208803657 U CN208803657 U CN 208803657U CN 201821118606 U CN201821118606 U CN 201821118606U CN 208803657 U CN208803657 U CN 208803657U
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Abstract
The utility model discloses a kind of low frequency phonon soundproof plate, including sound-absorbing face-piece, sound insulation dorsal shield and phonon crystal layer, the sound-absorbing face-piece is plate, and the sound-absorbing face-piece is along front and back to offering multiple penetrable sound holes；The sound insulation dorsal shield has the dorsal shield side wall for being parallel to the dorsal shield bottom wall of the sound-absorbing face-piece and being extended forward by the surrounding of the dorsal shield bottom wall, the front end of the dorsal shield side wall is Nian Jie with the trailing flank outer edge of the sound-absorbing face-piece, and the sound-absorbing face-piece and sound insulation dorsal shield limit sound-absorbing inner cavity jointly, the phonon crystal layer is located in the sound-absorbing inner cavity.Technical solutions of the utility model are by setting sound-absorbing face-piece and sound insulation dorsal shield to form sound-absorbing inner cavity, and phonon crystal layer is installed in the sound-absorbing inner cavity, so that the frequency range of low frequency phonon soundproof plate absorption of noise provided by the utility model has specific aim, it is good to the sound-absorbing effect of specific frequency spectrum noise.
Description
Technical field
The utility model relates to technical field of construction and decoration materials more particularly to a kind of low frequency phonon soundproof plates.
Background technique
Currently, a variety of electromechanical equipments would generally be equipped with such as in the building of modernization with the iterative method of urbanization process
Central air-conditioning, smoke exhaust fan, new blower etc., can generate the noise of multiple frequency range, no in the operation process of various electromechanical equipments
It avoidable ground can maintenance personnel to electromechanical equipment in building and neighbouring resident and environmental effects.In this regard, currently used
The auxiliary noise reduction measure such as sound absorption, sound insulation, noise elimination does not account for the spectrum signature in actual noise source, and the frequency range of sound-absorbing does not have needle
It is poor to the noise sound-absorbing effect of specific frequency spectrum to property.
Utility model content
The main purpose of the utility model is to provide a kind of low frequency phonon soundproof plate, it is intended to solve existing auxiliary noise reduction and arrange
The frequency range for the sound-absorbing applied does not have specific aim, to the problem of the noise sound-absorbing effect difference of specific frequency spectrum.
To achieve the above object, the utility model proposes a kind of low frequency phonon soundproof plates, comprising:
Sound-absorbing face-piece is plate, thereon along front and back to offering multiple penetrable sound holes；
Sound insulation dorsal shield, have be parallel to the sound-absorbing face-piece dorsal shield bottom wall and by the dorsal shield bottom wall surrounding forward
The front end of the dorsal shield side wall of extension, the dorsal shield side wall is Nian Jie with the outer edge of sound-absorbing face-piece trailing flank, and the sound-absorbing
Face-piece and sound insulation dorsal shield limit sound-absorbing inner cavity jointly, and,
Phonon crystal layer is located in the sound-absorbing inner cavity；
Wherein, the thickness of the sound-absorbing face-piece and the sound insulation dorsal shield is 20mm, the thickness of the phonon crystal layer
For 60mm.
Preferably, the phonon crystal layer is in array-like arrangement by multiple phonon crystal units and is formed, the phonon crystal
Unit includes epoxy resin cube matrix and the lead rod in the middle part of the epoxy resin cube matrix, and the lead rod
Outer surface is wrapped with silastic-layer.
Preferably, the sound absorption frequency of the phonon crystal unit is 200-300Hz.
Preferably, the multiple penetrable sound hole is distributed in the sound-absorbing face-piece, and each of the multiple penetrable sound hole is equal
It is from the front to the back in tapered setting.
Preferably, the sound-absorbing face-piece includes first half face-piece and the later half face-piece for being attached at first half face-piece trailing flank.
Preferably, the sound insulation dorsal shield and the later half face-piece are marble slab, and the burnishing surface of the marble slab
It is arranged towards the sound-absorbing inner cavity.
Technical solutions of the utility model pass through setting sound-absorbing face-piece and sound insulation dorsal shield to form sound-absorbing inner cavity, and in the suction
Phonon crystal layer is installed in sound inner cavity, so that frequency range of the low frequency phonon soundproof plate provided by the utility model to noise absorbent
It is good to the noise sound-absorbing effect of specific frequency spectrum with specific aim.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the schematic cross-section of the explosive view of an embodiment of low frequency phonon soundproof plate provided by the utility model.
Fig. 2 is the schematic cross-section of the installation diagram for the low frequency phonon soundproof plate that Fig. 1 is provided；
Fig. 3 is the enlarged diagram of the part A in Fig. 2；
Fig. 4 is the enlarged diagram of B-section in Fig. 1；
Fig. 5 is the stereoscopic schematic diagram of phonon crystal unit in Fig. 4.
Drawing reference numeral explanation:
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that if related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction is only used for explaining opposite between each component under a certain particular pose (as shown in the picture)
Positional relationship, motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the
Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning
The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one
A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection scope of the requires of the utility model.
To the frequency range of noise absorbent there is no specific aim to solve existing auxiliary noise reduction measure, to specific frequency spectrum
The problem of the sound-absorbing effect difference of noise, the utility model proposes a kind of low frequency phonon soundproof plate, Fig. 1 to Fig. 5 is the all-bottom sound
One embodiment of sub- soundproof plate.
Please refer to Fig.1 to Fig.3, in the present embodiment, low frequency phonon soundproof plate include sound-absorbing face-piece 1, sound insulation dorsal shield 2, with
And phonon crystal layer 3；The sound-absorbing face-piece 1 is plate, and the sound-absorbing face-piece 1 is along front and back to offering multiple penetrable sound holes 11；Institute
Stating sound insulation dorsal shield 2 has the dorsal shield bottom wall 21 for being parallel to the sound-absorbing face-piece 1 and is prolonged forward by the surrounding of the dorsal shield bottom wall 21
The dorsal shield side wall 22 stretched, the front end of the dorsal shield side wall 22 is Nian Jie with the outer edge of 1 trailing flank of sound-absorbing face-piece, and the suction
Sound face-piece 1 and sound insulation dorsal shield 2 limit sound-absorbing inner cavity jointly；The phonon crystal layer 3 is located in the sound-absorbing inner cavity；Wherein,
The thickness of the sound-absorbing face-piece 1 and the sound insulation dorsal shield 2 is 20mm, the phonon crystal layer 3 with a thickness of 60mm.
Technical solutions of the utility model pass through setting sound-absorbing face-piece 1 and sound insulation dorsal shield 2 to form sound-absorbing inner cavity, and described
Phonon crystal layer 3 is installed in sound-absorbing inner cavity, when in use, noise passes through the penetrable sound hole 11 being arranged on sound-absorbing face-piece 1 and enters institute
Sound-absorbing inner cavity is stated, (eliminating the noise using the spectral characteristic of phonon crystal sound-absorbing is existing skill for noise and 3 resonant silencing of phonon crystal layer
Art) so that the utility model absorption of noise frequency range has specific aim, sound-absorbing effect is good, and whole thickness only has 10cm,
It is compact-sized to be convenient for in-site installation.
Fig. 4 and Fig. 5 are please referred in the present embodiment, and the phonon crystal layer 3 is in array by multiple phonon crystal units 31
Shape rearranges, and the phonon crystal unit 31 is including epoxy resin cube matrix 311 and is set to the epoxy resin cube
The lead rod 312 at 311 middle part of matrix, and the outer surface of the lead rod 312 is wrapped with silastic-layer 313.The phonon crystal unit
Matrix uses epoxy resin cube matrix 311 in 31, shake core using being enclosed with the lead rod 312 of silastic-layer 313, lead rod 312 with
Relative motion easily occurs between the lesser silastic-layer 313 of hardness so that corresponding frequency spectrum noise contributions shake core on when,
Shake core resonates with noise, and the energy for consuming noise achievees the purpose that sound insulation, the absorption of noise of the phonon crystal unit 31
Spectral characteristic calculate referring to the description as described in phonon crystal in the prior art.
In the present embodiment, the sound absorption frequency of the phonon crystal unit 31 is 200-300Hz, to realize sound-absorbing frequency
Spectrum, according to the prior art referring to description is recorded as described in phonon crystal in Condensed Matter Physics pertinent texts, in a specific implementation
The length a=60mm of lead rod 312 is chosen in example when corresponding sound absorption frequency 200-300Hz, 312 radius of lead rod is r=20mm, about
The frequency spectrum calculation formula of phonon crystal is the prior art referring to description is remembered as described in phonon crystal in Condensed Matter Physics pertinent texts
It carries.The sound absorption frequency of the phonon crystal is selected as 200-300Hz, so that tradition auxiliary noise reduction measure is difficult to the machine absorbed sending
Low-frequency sound (200-300Hz) can effectively be absorbed, the sound absorption frequency of certain phonon crystal is not limited only to 200-
300Hz, the noise spectrum that can be needed according to calculation formula required design in the prior art, is just not listed one by one herein.
In the present embodiment, it please referring to shown in Fig. 2 and Fig. 3, the multiple penetrable sound hole 11 is distributed in the sound-absorbing face-piece 1,
And each of the multiple penetrable sound hole 11 is in tapered setting from the front to the back.From the front to the back tapered of the penetrable sound hole 11
Setting enables noise sufficiently to be absorbed by phonon crystal layer 3, further strengthens so that noise easily goes out the sound-absorbing inner cavity into hardly possible
The sound-absorbing effect of this low frequency phonon soundproof plate.
Specifically, it please refers to shown in Fig. 2 and Fig. 3, the sound-absorbing face-piece 1 includes first half face-piece 12 and is attached at the first half
The later half face-piece 13 of 12 trailing flank of face-piece.The sound insulation dorsal shield 2 and the later half face-piece 13 are marble slab, and the Dali
The burnishing surface of slabstone is arranged towards the sound-absorbing inner cavity.The later half face-piece 13 and the sound insulation dorsal shield 2 are disposed as reflecting
The preferable marble slab of sound performance, and the burnishing surface of marble slab is set to the sound insulation inner cavity, so that into sound-absorbing
Phonon crystal is not reflexed to by the burnishing surface of the marble slab by the noise that phonon crystal layer 3 absorbs again after inner cavity
Layer 3 absorbs again, until the energy attenuation of noise finishes, substantially increases the effect for absorbing noise.It should be noted that described
First half face-piece 12 can be cellulose plate, and the sound-absorbing face-piece 1 is divided into first half face-piece 12 and later half face-piece 13, has both realized in institute
It states the reflection of sound-absorbing inner cavity and does not absorb the purpose of complete noise, in turn avoid entire first half face-piece 12 and be set as marble slab entirely leading
It causes excessive noise not enter sound-absorbing inner cavity just to be reflected.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Equivalent structure transformation made by using the description of the utility model and the drawings is applied directly or indirectly in other phases
The technical field of pass, is also included in the patent protection scope of the utility model.
Claims (6)
1. a kind of low frequency phonon soundproof plate characterized by comprising
Sound-absorbing face-piece is plate, thereon along front and back to offering multiple penetrable sound holes；
Sound insulation dorsal shield has the dorsal shield bottom wall for being parallel to the sound-absorbing face-piece and is extended forward by the surrounding of the dorsal shield bottom wall
Dorsal shield side wall, the front end of the dorsal shield side wall is Nian Jie with the outer edge of sound-absorbing face-piece trailing flank, and the sound-absorbing face-piece
Sound-absorbing inner cavity is limited jointly with sound insulation dorsal shield, and,
Phonon crystal layer is located in the sound-absorbing inner cavity；
Wherein, the thickness of the sound-absorbing face-piece and the sound insulation dorsal shield is 20mm, the phonon crystal layer with a thickness of
60mm。
2. low frequency phonon soundproof plate as described in claim 1, which is characterized in that the phonon crystal layer is by multiple phonon crystals
Unit is in array-like arrangement composition, and the phonon crystal unit includes epoxy resin cube matrix and is set to the asphalt mixtures modified by epoxy resin
Lead rod in the middle part of rouge cube matrix, and the outer surface of the lead rod is wrapped with silastic-layer.
3. low frequency phonon soundproof plate as claimed in claim 2, which is characterized in that the sound absorption frequency of the phonon crystal unit is
200-300Hz。
4. low frequency phonon soundproof plate as described in claim 1, which is characterized in that the multiple penetrable sound hole is distributed in the sound-absorbing
Face-piece, and each of the multiple penetrable sound hole is in tapered setting from the front to the back.
5. low frequency phonon soundproof plate as claimed in claim 4, which is characterized in that the sound-absorbing face-piece includes first half face-piece and patch
Later half face-piece set on first half face-piece trailing flank.
6. low frequency phonon soundproof plate as claimed in claim 5, which is characterized in that the sound insulation dorsal shield and the later half face-piece are equal
For marble slab, and the burnishing surface of the marble slab is arranged towards the sound-absorbing inner cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821118606.5U CN208803657U (en) | 2018-07-13 | 2018-07-13 | A kind of low frequency phonon soundproof plate |
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| CN201821118606.5U CN208803657U (en) | 2018-07-13 | 2018-07-13 | A kind of low frequency phonon soundproof plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285495A (en) * | 2019-06-28 | 2019-09-27 | 广东美的制冷设备有限公司 | A kind of vibration isolation sound arrester and air-conditioner outdoor unit |
| CN114049868A (en) * | 2021-11-10 | 2022-02-15 | 哈尔滨工程大学船舶装备科技有限公司 | Composite sound insulation board based on phononic crystal and manufacturing method thereof |
-
2018
- 2018-07-13 CN CN201821118606.5U patent/CN208803657U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285495A (en) * | 2019-06-28 | 2019-09-27 | 广东美的制冷设备有限公司 | A kind of vibration isolation sound arrester and air-conditioner outdoor unit |
| CN110285495B (en) * | 2019-06-28 | 2021-09-28 | 广东美的制冷设备有限公司 | Vibration isolation sound absorption device and air conditioner outdoor unit |
| CN114049868A (en) * | 2021-11-10 | 2022-02-15 | 哈尔滨工程大学船舶装备科技有限公司 | Composite sound insulation board based on phononic crystal and manufacturing method thereof |
| CN114049868B (en) * | 2021-11-10 | 2024-04-19 | 哈尔滨工程大学船舶装备科技有限公司 | Composite sound insulation board based on phonon crystal and manufacturing method thereof |
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