CN213014769U - Micropore composite full-frequency sound absorption plate - Google Patents
Micropore composite full-frequency sound absorption plate Download PDFInfo
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- CN213014769U CN213014769U CN202021335222.6U CN202021335222U CN213014769U CN 213014769 U CN213014769 U CN 213014769U CN 202021335222 U CN202021335222 U CN 202021335222U CN 213014769 U CN213014769 U CN 213014769U
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Abstract
The utility model discloses a compound full frequency acoustic baffle of micropore, inhale sound bottom plate (4) including upper panel (1), fossil fragments bearing structure (3) and lower floor, upper panel (1) and lower floor inhale sound bottom plate (4) respectively with the upper and lower terminal surface fixed connection of fossil fragments bearing structure (3), it is provided with a plurality of holes to run through between the upper and lower terminal surface of upper panel (1), it has a plurality of holes to run through between the terminal surface about fossil fragments bearing structure (3). The utility model discloses possess simultaneously the sound absorption of three kinds of different forms of micropore resonance sound absorption, sheet metal resonance sound absorption, porous fiber sound absorption, possess simultaneously low, well, high sound absorption effect who covers the full frequency channel of audible sound, have better replacement and the filling of optimizing the material to current market material's single sound absorption performance defect.
Description
Technical Field
The utility model belongs to the technical field of the sound barrier structure, be a compound full-frequency acoustic baffle of micropore particularly.
Background
The honeycomb panel sound absorption plate is a sound absorption structure formed by sound absorption of a honeycomb core single honeycomb cavity, and the upper surface and the lower surface of the honeycomb structure are connected with an upper panel and a lower panel respectively. The existing honeycomb plate generally only has one surface facing a sound source, so that only a single-side panel and a honeycomb core form a sound absorption structure, the cavity depth is small, the sound absorption performance of the structure is poor, the sound absorption frequency is narrow, and the applicability is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compound full frequency acoustic baffle of micropore, it all has better absorption effect to full frequency sound (including low frequency, intermediate frequency, high frequency band).
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the utility model provides a compound full-frequency acoustic baffle of micropore, includes upper panel, fossil fragments bearing structure and lower floor and inhales the sound bottom plate, upper panel and lower floor inhale the sound bottom plate respectively with fossil fragments bearing structure's last lower terminal surface fixed connection, it is provided with a plurality of holes to run through between the upper and lower terminal surface of upper panel, it has a plurality of holes to run through between the terminal surface about fossil fragments bearing structure.
Furthermore, the upper panel and the lower sound-absorbing bottom plate are arranged in parallel.
Further, the holes of the keel support structure are regular polygons, preferably squares or regular hexagons.
Further, the cross section of the keel supporting structure is a plurality of regular polygons or waves.
Further, the keel support structure is aluminum or paper or fiberboard.
Furthermore, the keel supporting structure is a whole plate with a plurality of holes penetrating through the upper end surface and the lower end surface.
Furthermore, the upper panel and the lower sound-absorbing bottom plate are respectively and fixedly connected with the upper end face and the lower end face of the keel supporting structure through glue.
Furthermore, the upper panel is an aluminum plate or a steel plate, the aperture of the hole penetrating through the upper panel is 0.3-3mm, and the perforation rate is 1% -30%.
Furthermore, the lower sound-absorbing bottom plate is a glass fiber plate, a polyester fiber plate, a rock wool fiber plate, an aramid fiber plate or an aluminum fiber plate, and the fiber density of the lower sound-absorbing bottom plate is 40-200Kg/m3。
Furthermore, the sound absorption base plate also comprises bent side edges, and the bent side edges are connected with the peripheral side edges between the upper layer panel and the lower layer sound absorption base plate.
Compared with the prior art, the utility model, it is showing the advantage and lies in:
(1) after the upper panel is perforated, the upper panel and a cavity divided by the middle keel supporting structure form a plurality of Helmholtz resonators to form a combination of a micropore resonance sound absorption structure and a thin plate resonance sound absorption structure, and the combination has good sound absorption performance for low-frequency sound independently;
(2) the lower sound-absorbing bottom plate is a high-density fiberboard, belongs to porous fiber sound-absorbing materials and has good sound-absorbing capacity for medium-frequency and high-frequency sounds;
(3) the utility model discloses possess simultaneously the sound absorption of three kinds of different forms of micropore resonance sound absorption, sheet metal resonance sound absorption, porous fiber sound absorption, possess simultaneously low, well, high sound absorption effect who covers the full frequency channel of audible sound, have better replacement and the filling of optimizing the material to current market material's single sound absorption performance defect.
Drawings
Fig. 1 is a schematic view of the whole structure of the first embodiment of the microporous composite full-frequency sound-absorbing board of the present invention.
Fig. 2 is a schematic view of the whole structure of the second embodiment of the microporous composite full-frequency sound-absorbing board of the present invention.
Fig. 3 is a sectional view taken along line a-a in fig. 1.
Reference numbers in the figures: 1. an upper panel; 2. bending the side edges; 3. a keel support structure; 4. the lower floor inhales the sound bottom plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
With reference to fig. 1-3, a compound full-frequency acoustic baffle of micropore, includes that upper panel 1, fossil fragments bearing structure 3 and lower floor inhale sound bottom plate 4, upper panel 1 and lower floor inhale sound bottom plate 4 respectively with fossil fragments bearing structure 3's upper and lower terminal surface fixed connection, it is provided with a plurality of holes to run through between upper panel 1's the upper and lower terminal surface, it has a plurality of holes to run through between the terminal surface about fossil fragments bearing structure 3.
Preferably, the upper panel 1 is arranged in parallel with the lower sound-absorbing bottom plate 4.
Preferably, the holes of the keel support structure 3 are regular polygons, preferably square holes or regular hexagonal holes, as shown in fig. 1, in the first embodiment regular hexagonal holes, as shown in fig. 2, in the second embodiment regular quadrilateral holes.
Preferably, the cross-section of the keel support structure 3 is a plurality of regular polygons or waves.
Preferably, the keel support structure 3 is aluminum or paper or fiberboard.
Preferably, the keel supporting structure 3 is a whole plate with a plurality of holes penetrating through the upper and lower end surfaces.
Preferably, the upper panel 1 and the lower sound-absorbing bottom plate 4 are respectively and fixedly connected with the upper end surface and the lower end surface of the keel supporting structure 3 through glue.
Preferably, the upper panel 1 is an aluminum plate or a steel plate, the diameter of a hole penetrating through the upper panel is 0.3-3mm, the perforation rate is 1% -30%, and the keel supporting structure 3 is matched with the upper panel 1 in size and specification and corresponds to the upper panel in position.
Preferably, the lower sound-absorbing bottom plate 4 is a high-density fiber sound-absorbing plate, such as a glass fiber plate or a polyester fiber plate or rock wool fiberThe fiber density of the lower sound-absorbing bottom plate 4 is 40-200Kg/m3。
Preferably, the sound absorption structure further comprises bent side edges 2, wherein the bent side edges 2 are connected to the peripheral side edges between the upper-layer panel 1 and the lower-layer sound absorption bottom plate 4.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a compound full-frequency acoustic baffle of micropore, its characterized in that inhales sound bottom plate (4) including upper panel (1), fossil fragments bearing structure (3) and lower floor, upper panel (1) and lower floor inhale sound bottom plate (4) respectively with the upper and lower terminal surface fixed connection of fossil fragments bearing structure (3), it is provided with a plurality of holes to run through between the upper and lower terminal surface of upper panel (1), it has a plurality of holes to run through between the terminal surface about fossil fragments bearing structure (3).
2. The microporous composite full-frequency sound absorption plate according to claim 1, wherein the upper panel (1) and the lower sound absorption bottom plate (4) are arranged in parallel.
3. The microporous composite full frequency acoustic panel according to claim 1, wherein the holes of the keel support structure (3) are regular polygonal holes.
4. The microporous composite full frequency acoustic panel according to claim 1, wherein the cross section of the keel support structure (3) is a plurality of regular polygons or waves.
5. The microporous composite full frequency acoustic panel according to claim 1, wherein the keel support structure (3) is aluminum or paper or fiberboard.
6. The microporous composite full-frequency sound absorption plate according to claim 1, wherein the keel support structure (3) is a whole plate with a plurality of holes penetrating through the upper and lower end surfaces.
7. The microporous composite full-frequency sound absorption plate according to any one of claims 1 to 6, wherein the upper panel (1) and the lower sound absorption bottom plate (4) are respectively fixedly connected with the upper end surface and the lower end surface of the keel support structure (3) through glue.
8. The microporous composite full-frequency sound absorption plate according to any one of claims 1 to 6, wherein the upper panel (1) is an aluminum plate or a steel plate, the diameter of the holes penetrating the upper panel is 0.3 to 3mm, and the perforation rate is 1 to 30 percent.
9. The microporous composite full-frequency sound absorption plate according to claim 8, wherein the lower sound absorption bottom plate (4) is a glass fiber plate, a polyester fiber plate, a rock wool fiber plate, an aramid fiber plate or an aluminum fiber plate, and the fiber density of the lower sound absorption bottom plate (4) is 40-200Kg/m3。
10. The microporous composite full-frequency sound absorption plate according to claim 1, further comprising bent side edges (2), wherein the bent side edges (2) are connected to the peripheral side edges between the upper panel (1) and the lower sound absorption bottom plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021335222.6U CN213014769U (en) | 2020-07-09 | 2020-07-09 | Micropore composite full-frequency sound absorption plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021335222.6U CN213014769U (en) | 2020-07-09 | 2020-07-09 | Micropore composite full-frequency sound absorption plate |
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| CN213014769U true CN213014769U (en) | 2021-04-20 |
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| CN202021335222.6U Active CN213014769U (en) | 2020-07-09 | 2020-07-09 | Micropore composite full-frequency sound absorption plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775067A (en) * | 2021-10-25 | 2021-12-10 | 广州新静界声学科技股份有限公司 | Composite sound absorption assembly with enhanced low frequency absorption |
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2020
- 2020-07-09 CN CN202021335222.6U patent/CN213014769U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775067A (en) * | 2021-10-25 | 2021-12-10 | 广州新静界声学科技股份有限公司 | Composite sound absorption assembly with enhanced low frequency absorption |
| CN113775067B (en) * | 2021-10-25 | 2023-03-24 | 广州新静界声学科技股份有限公司 | Composite sound absorption assembly with reinforced low-frequency absorption |
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