CN205242284U - Square acoustic tile based on helmholtz resonator - Google Patents
Square acoustic tile based on helmholtz resonator Download PDFInfo
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- CN205242284U CN205242284U CN201520941837.6U CN201520941837U CN205242284U CN 205242284 U CN205242284 U CN 205242284U CN 201520941837 U CN201520941837 U CN 201520941837U CN 205242284 U CN205242284 U CN 205242284U
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- helmholtz resonator
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- tile based
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Abstract
The utility model discloses a square acoustic tile based on helmholtz resonator, the technical scheme of adoption is including the concrete block brick body, helmholtz resonator, helmholtz resonator neck perforation material, characterized by: the even distribution of helmholtz resonator is internal at the concrete block brick, and helmholtz resonator neck perforation material is filled in every helmholtz resonator neck, and evenly distributed is in two faces of the concrete stripping and slicing brick body. The beneficial effects are that: the design brick body combines through the rational design the used brick body of daily building with helmholtz resonator, the improvement that produces matter to the sound insulation property of building. Its helmholtz resonator adopts the design that runs through square brick front and back two sides, and this kind of design has made things convenient for its single face restriction when architectural design uses, does not influence its effect that reduces the noise simultaneously.
Description
Technical field
The utility model relate to a kind of reduce ambient noise and can practice to the construction material of daily building. Not only be applicable to the places such as KTV, bar, construction site, Along Railway, can be installed on sound insulating house and acoustic barrier surface, reach the effect that reduces noise hazard simultaneously.
Background technology
Noise is one of the world's four large pollutions, not only the mankind's hearing is had to damage, also can cause disease, disturbs language, reduce labor productivity initiation personal injury. In order to reduce the harm of noise on human, people have manufactured and designed the device of various sound insulation, sound absorption, as sound-absorbing material, acoustic hood, acoustic barrier etc., these designs are all to reduce noise size by the energy of loss propagation sound, but if acoustic hood, acoustic barrier etc. are but for global design, can not need arbitrarily combination according to scene in mode comparatively freely, need examine to do pointed design with reference to on-the-spot by calculating, therefore how by noise prevention and control freely implement the research direction that becomes an emphasis in daily design.
Summary of the invention
It is not remarkable that the purpose of this utility model is to overcome existing air-entrained concrete building block defening effect, acoustic hood, the shortcoming that the design processes such as acoustic barrier are loaded down with trivial details, provide a kind of defening effect remarkable, the square acoustic tile based on Helmholtz resonator that can arbitrarily combine, the technical scheme adopting is: a kind of square acoustic tile based on Helmholtz resonator, it is characterized in that: by concrete building bricks body, Helmholtz resonator, Helmholtz resonator neck perforated material composition, described Helmholtz resonator is evenly distributed in concrete building bricks body, described Helmholtz resonator comprises resonant cavity and neck two parts, and in the neck of the Helmholtz resonator left and right sides, be respectively equipped with 1 Helmholtz resonator neck perforated material.
The technical solution of the utility model also has: described Helmholtz resonator comprises resonant cavity and neck two parts, described resonant cavity is that diameter is 22mm, the high cavity for 100mm, described neck is the cavity of diameter 11mm, high 7.5mm, and Helmholtz resonator neck perforated material is respectively installed in the neck of Helmholtz resonator two ends.
The technical solution of the utility model also has: Helmholtz resonator neck perforated material is that diameter is 11mm, and height is the cylinder of 7.5mm, and penetration hole diameter is 4mm, and punching rate is 0.55, and just fills the neck of Helmholtz resonator completely.
The technical solution of the utility model also has: described concrete building bricks body is rectangular-shaped, is of a size of 240mm × 115mm × 53mm.
The beneficial effects of the utility model are: the square acoustic tile based on Helmholtz resonator under the utility model, neck at its Helmholtz resonator is filled with perforated material, perforated material Ceramics material, parallel perforation has improved the acoustic absorptivity and the acoustic resistance that have resonated, thereby resonator wide band sound absorption is broadened, selecting diameter is the parallel perforation of 2mm, find by corresponding experiment, in the time that aperture is less than 2mm, with further reducing of aperture, resonator resonance sound-absorbing coefficient can decline rapidly, and when aperture is greater than after about 2mm, resonant coefficient also can be along with the further increase in aperture declines to some extent, thereby the aperture of 2mm is optimum aperture size, can reach best acoustically effective, square acoustic tile based on Helmholtz resonator described in the utility model simultaneously, when its profile adopts two sides design with holes to be more conducive to build another 4 assemble bonding. square acoustic tile based on Helmholtz resonator described in the utility model, its Helmholtz resonator adopts the design that runs through two sides, square block front and back, this kind of design facilitated its one side restriction in the time that architectural design is used, and do not affect it and falls low noise effect simultaneously.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is front view of the present utility model.
Fig. 3 is the A-A profile in Fig. 2.
Fig. 4 is the structural representation of neck packing material of the present utility model.
The wherein 1 brick body that is square acoustic tile, 2 is the Helmholtz resonator in square acoustic tile, 3 perforated materials of filling for Helmholtz resonator neck.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of square acoustic tile based on Helmholtz resonator, formed by concrete building bricks body (1), Helmholtz resonator (2), Helmholtz resonator neck perforated material (3), described Helmholtz resonator is evenly distributed in concrete building bricks body (1), described Helmholtz resonator (2) comprises resonant cavity and neck two parts, and in the neck of the Helmholtz resonator left and right sides, is respectively equipped with 1 Helmholtz resonator neck perforated material (3). Described concrete building bricks body (1) is rectangular-shaped, is of a size of 240mm × 115mm × 53mm. Described Helmholtz resonator (2) comprises resonant cavity and neck two parts, described resonant cavity is that diameter is 22mm, the high cavity for 100mm, described neck is the cavity of diameter 11mm, high 7.5mm, in the neck of Helmholtz resonator (2) two ends, Helmholtz resonator neck perforated material (3) is respectively installed. Helmholtz resonator neck perforated material (3) is that diameter is 11mm, and height is the cylinder of 7.5mm, and penetration hole diameter is 4mm, and punching rate is 0.55, and just fills the neck of Helmholtz resonator (2) completely.
The acoustically effective of the utility model based on Helmholtz resonator, combine with daily brick body, in use, make 240mm × 53mm facing to sound source, build a wall and make 240mm × 53mm do surface of wall with the utility model brick body, by the ratio of mortar cement 1:3 as 240mm × 115mm face of the bonding different fragments of brick of adhesive with 115mm × 53mm face with base city wall.
While adopting the utility model to assemble brick wall, can smear concrete at outer surface, block the packing material perforation of outer surface of building, the one side perforation of shutoff the utility model square block can not affect its sound insulation acoustically effective at another side, thereby under the prerequisite that does not affect the utility model acoustically effective, has improved its thermal property simultaneously.
Sound absorption principle of the present utility model is: the size of Helmholtz resonator is long much smaller than sound wave, its neck volume is also much smaller than cavity volume, sound wave produces pressure fluctuation in resonator neck porch, drive neck air to vibrate in cavity, neck is equivalent to a rigidity " piston " and does integral oscillation, and piston mass isM m =ρ 0 LS b , this piston is subject to the frictional resistance effect of neck tube wall, along with the pulsation of air, inner air is compression and expansion constantly, finally cause rising or the reduction of pressure, the variation of cavity pressure can affect again the vibration of neck air column conversely, in this class piston movement, the required energy of Acoustic Wave Propagation is depleted, thereby reach acoustically effective, the Helmholtz resonator neck that it is air that feature of the present utility model is at script has been filled the porous material of ceramic material, increase the acoustic impedance value of neck entrance, improve the acoustic absorptivity of resonator, thereby obtain than the general Helmholtz resonator acoustically effective that better insulates against sound.
Claims (4)
1. the square acoustic tile based on Helmholtz resonator, it is characterized in that: formed by concrete building bricks body, Helmholtz resonator, Helmholtz resonator neck perforated material, described Helmholtz resonator is evenly distributed in concrete building bricks body, described Helmholtz resonator comprises resonant cavity and neck two parts, and in the neck of the Helmholtz resonator left and right sides, is respectively equipped with 1 Helmholtz resonator neck perforated material.
2. the square acoustic tile based on Helmholtz resonator according to claim 1, it is characterized in that: described Helmholtz resonator comprises resonant cavity and neck two parts, described resonant cavity is that diameter is 22mm, the high cavity for 100mm, described neck is the cavity of diameter 11mm, high 7.5mm, and Helmholtz resonator neck perforated material is respectively installed in the neck of Helmholtz resonator two ends.
3. the square acoustic tile based on Helmholtz resonator according to claim 1, it is characterized in that: Helmholtz resonator neck perforated material is that diameter is 11mm, height is the cylinder of 7.5mm, penetration hole diameter is 4mm, punching rate is 0.55, and just fills the neck of Helmholtz resonator completely.
4. the square acoustic tile based on Helmholtz resonator according to claim 1, is characterized in that: described concrete building bricks body is rectangular-shaped, is of a size of 240mm × 115mm × 53mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520941837.6U CN205242284U (en) | 2015-11-24 | 2015-11-24 | Square acoustic tile based on helmholtz resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520941837.6U CN205242284U (en) | 2015-11-24 | 2015-11-24 | Square acoustic tile based on helmholtz resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205242284U true CN205242284U (en) | 2016-05-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520941837.6U Expired - Fee Related CN205242284U (en) | 2015-11-24 | 2015-11-24 | Square acoustic tile based on helmholtz resonator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205242284U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107399991A (en) * | 2017-07-31 | 2017-11-28 | 北京途科技服务有限公司 | Inorganic primary and secondary bubble sound-absorbing material based on helmholtz resonance sound absorption principle and preparation method thereof |
| CN107558389A (en) * | 2017-08-31 | 2018-01-09 | 哈尔滨工程大学 | Multi-frequency Intelligent target generating gobo |
| CN107622764A (en) * | 2016-07-13 | 2018-01-23 | 于泳林 | A kind of noise absorber |
-
2015
- 2015-11-24 CN CN201520941837.6U patent/CN205242284U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107622764A (en) * | 2016-07-13 | 2018-01-23 | 于泳林 | A kind of noise absorber |
| CN107399991A (en) * | 2017-07-31 | 2017-11-28 | 北京途科技服务有限公司 | Inorganic primary and secondary bubble sound-absorbing material based on helmholtz resonance sound absorption principle and preparation method thereof |
| CN107399991B (en) * | 2017-07-31 | 2020-11-06 | 北京一途科技服务有限公司 | Inorganic composite foam sound absorption material based on Helmholtz resonance sound absorption principle and preparation method thereof |
| CN107558389A (en) * | 2017-08-31 | 2018-01-09 | 哈尔滨工程大学 | Multi-frequency Intelligent target generating gobo |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20161124 |