CN201689671U - Foamed aluminum sound absorbing plate - Google Patents
Foamed aluminum sound absorbing plate Download PDFInfo
- Publication number
- CN201689671U CN201689671U CN2010202182444U CN201020218244U CN201689671U CN 201689671 U CN201689671 U CN 201689671U CN 2010202182444 U CN2010202182444 U CN 2010202182444U CN 201020218244 U CN201020218244 U CN 201020218244U CN 201689671 U CN201689671 U CN 201689671U
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- CN
- China
- Prior art keywords
- hole
- acoustic board
- foamed aluminium
- foamed aluminum
- sound absorbing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model relates to a foamed aluminum sound absorbing plate, which is characterized in that a hole is arranged on a closed hole foamed aluminum plate. The utility model has the invention goal of providing the foamed aluminum sound absorbing plate with the advantages of light weight, high temperature resistance, fire resistance, convenient processing, no pollution and good sound absorption performance. The sound absorbing peak of the foamed aluminum sound absorbing plate of the utility model can be regulated through changing the perforating rate and the thickness, the density and the like of the closed hole foamed aluminum plate.
Description
Technical field:
The utility model relates to a kind of foamed aluminium acoustic board.
Background technology:
At present, existing acoustic absorbant mainly contains two big classes, and a class is a sound-absorbing porous material, uses wider have glass wool, rock wool, mineral cotton and polyfoam etc.; These acoustic absorbants could use after generally need forming composite plate with other materials.Another kind of for through punching or the wood based panel or the sheet metal that crack and handle, but these materials could use after must and forming resonance sound-absorbing structure through further processing.The acoustically effective of glass wool, rock wool, mineral cotton is better, but the easily moisture absorption, fracture, weathering, the material corrosion-resistant is easily aging.In work progress, be easy to generate the spittle, the healthy of workmen threatened; And the difficult recovery of aging product, also can cause second environmental pollution.The refractability of polyfoam is poor, and load-bearing property is poor, need depend on other load-bearing materials, and installs cumbersome.Though the resonance sound-absorbing structure of being made up of wood based panel or sheet metal does not relate to environmental pollution, permanance is also better, but itself sound sucting band is narrower, and acoustically effective often needs to design complicated structure in order to reach preferably, makes that the sound absorption structure integral body of sheet metal class is heavy, huge; And the sound absorption structure of wood based panel class has inflammability, and fire can not play fire retardation when taking place.In the sound absorption field, closed-cell aluminum foam is newer acoustic absorbant, and it mainly is to utilize rough surface tissue defects dissipation acoustic energy such as sound wave generation diffuse reflection and inner micropore, crackle to be reached the effect of sound absorption.But the general sound absorption peak value of closed-cell aluminum foam only can reach about 0.5.
The utility model content:
At the problem that prior art exists, the utility model provides a kind of light weight, high temperature resistant, fire-retardant, easy to process, pollution-free, and the good foamed aluminium acoustic board of sound absorbing capabilities.
To achieve these goals, the utility model adopts following technical scheme, and a kind of foamed aluminium acoustic board comprises the closed-cell foam aluminium sheet, is characterized in that the closed-cell foam aluminium sheet is provided with hole.
The diameter of described hole is 0.5～4mm.
Described hole is circular hole or square hole.
Described hole presses square or equilateral triangle is arranged.
Centre distance between the described hole is 5～20mm.
The punching rate of described hole is 1～5%.
The beneficial effects of the utility model:
Easy to process, the cleanliness without any pollution of foamed aluminium acoustic board of the present utility model; And the thickness by changing punching rate and closed-cell foam aluminium sheet, density etc. can be adjusted the peak value of sound absorption.Because the closed-cell foam aluminium sheet is provided with hole, significantly improves with regard to the acoustical absorption coefficient that makes foamed aluminium acoustic board of the present utility model, and has overcome the shortcoming of single low frequency of existing acoustic board or high frequency absorption noise, has applicability widely.Foamed aluminium acoustic board of the present utility model can be applied at aspects such as communications and transportation, interior decoration, environmental protection, can reduce noise pollution significantly, improves the people's quality of life.
Description of drawings:
Fig. 1 is the of the present utility model structural representation of hole by square arrangement;
Fig. 2 presses the structural representation of the present utility model that equilateral triangle is arranged for hole;
Among the figure, 1-closed-cell foam aluminium sheet, 2-hole, the diameter of d-hole, the centre distance between the B-hole.
Embodiment:
As shown in Figure 1 and Figure 2, a kind of foamed aluminium acoustic board comprises closed-cell foam aluminium sheet 1, and closed-cell foam aluminium sheet 1 is provided with hole 2.
The diameter d of described hole 2 is 0.5～4mm.
Described hole 2 is circular hole or square hole.
Described hole 2 presses square or equilateral triangle is arranged.
Centre distance B between the described hole 2 is 5～20mm.
The punching rate of described hole 2 is 1～5%.
Embodiment 1:
A kind of foamed aluminium acoustic board, selection density is 0.3g/cm
3The closed-cell foam aluminium sheet 1 of 800mm * 1800mm * 10mm, closed-cell foam aluminium sheet 1 is provided with hole 2.The diameter d of hole 2 is 2mm, and hole 2 is a circular hole, and hole 2 is by square arrangement, and the centre distance B between the hole 2 is 10mm, and punching rate is 3%, and described hole 2 adopts disposable being stamped to form of mechanical stamping mode.Show after testing: the high acoustic absorption coefficient value of this foamed aluminium acoustic board appears at 2000Hz, and the predominant frequency acoustical absorption coefficient is between 0.6～0.8; Use its high acoustic absorption amount of this foamed aluminium acoustic board to reach more than the 15dB.
Embodiment 2:
A kind of foamed aluminium acoustic board, selection density is 0.2g/cm
3The closed-cell foam aluminium sheet 1 of 800mm * 1800mm * 10mm, closed-cell foam aluminium sheet 1 is provided with hole 2.The diameter d of hole 2 is 0.5mm, and hole 2 is a square hole, and hole 2 is by square arrangement, and the centre distance B between the hole 2 is 5mm, and punching rate is 5%, and described hole 2 adopts disposable being stamped to form of mechanical stamping mode.Show after testing: the high acoustic absorption coefficient value of this foamed aluminium acoustic board appears at 2000Hz, and the predominant frequency acoustical absorption coefficient is between 0.6～0.9; Use its high acoustic absorption amount of this foamed aluminium acoustic board to reach more than the 20dB.
Embodiment 3:
A kind of foamed aluminium acoustic board, selection density is 0.3g/cm
3The closed-cell foam aluminium sheet 1 of 800mm * 1800mm * 20mm, closed-cell foam aluminium sheet 1 is provided with hole 2.The diameter d of hole 2 is 4mm, and hole 2 is a circular hole, and hole 2 is by square arrangement, and the centre distance B between the hole 2 is 20mm, and punching rate is 1%, and described hole 2 adopts disposable being stamped to form of mechanical stamping mode.Show after testing: the high acoustic absorption coefficient value of this foamed aluminium acoustic board appears at 1250Hz, and the predominant frequency acoustical absorption coefficient is between 0.6～0.8; Use its high acoustic absorption amount of this foamed aluminium acoustic board to reach more than the 15dB.
Embodiment 4:
A kind of foamed aluminium acoustic board, selection density is 0.3g/cm
3The closed-cell foam aluminium sheet 1 of 800mm * 1800mm * 20mm, closed-cell foam aluminium sheet 1 is provided with hole 2.The diameter d of hole 2 is 3mm, and hole 2 is a circular hole, and hole 2 is by square arrangement, and the centre distance B between the hole 2 is 10mm, and punching rate is 2%, and described hole 2 adopts disposable being stamped to form of mechanical stamping mode.Show after testing: the high acoustic absorption coefficient value of this foamed aluminium acoustic board appears at 1000Hz, and the predominant frequency acoustical absorption coefficient is between 0.6～0.9; Use its high acoustic absorption amount of this foamed aluminium acoustic board to reach more than the 20dB.
Embodiment 5:
A kind of foamed aluminium acoustic board, selection density is 0.3g/cm
3The closed-cell foam aluminium sheet 1 of 800mm * 1800mm * 10mm, closed-cell foam aluminium sheet 1 is provided with hole 2.The diameter d of hole 2 is 1mm, and hole 2 is a circular hole, and hole 2 is pressed equilateral triangle and arranged, and the centre distance B between the hole 2 is 15mm, and punching rate is 4%, and described hole 2 adopts disposable being stamped to form of mechanical stamping mode.Show after testing: the high acoustic absorption coefficient value of this foamed aluminium acoustic board appears at 1800Hz, and the predominant frequency acoustical absorption coefficient is between 0.6～0.9; Use its high acoustic absorption amount of this foamed aluminium acoustic board to reach more than the 20dB.
Claims (9)
1. a foamed aluminium acoustic board comprises the closed-cell foam aluminium sheet, it is characterized in that the closed-cell foam aluminium sheet is provided with hole.
2. a kind of foamed aluminium acoustic board according to claim 1, the diameter that it is characterized in that described hole is 0.5～4mm.
3. a kind of foamed aluminium acoustic board according to claim 2, the diameter that it is characterized in that described hole is 2mm.
4. a kind of foamed aluminium acoustic board according to claim 1 is characterized in that described hole is circular hole or square hole.
5. a kind of foamed aluminium acoustic board according to claim 1 is characterized in that described hole is by square or equilateral triangle arrangement.
6. a kind of foamed aluminium acoustic board according to claim 1 is characterized in that the centre distance between the described hole is 5～20mm.
7. a kind of foamed aluminium acoustic board according to claim 6 is characterized in that the centre distance between the described hole is 10mm.
8. a kind of foamed aluminium acoustic board according to claim 1, the punching rate that it is characterized in that described hole is 1～5%.
9. a kind of foamed aluminium acoustic board according to claim 8, the punching rate that it is characterized in that described hole is 3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202182444U CN201689671U (en) | 2010-06-08 | 2010-06-08 | Foamed aluminum sound absorbing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202182444U CN201689671U (en) | 2010-06-08 | 2010-06-08 | Foamed aluminum sound absorbing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201689671U true CN201689671U (en) | 2010-12-29 |
Family
ID=43377950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202182444U Expired - Fee Related CN201689671U (en) | 2010-06-08 | 2010-06-08 | Foamed aluminum sound absorbing plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201689671U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318106A (en) * | 2013-06-29 | 2013-09-25 | 贵州大学 | Method and device for passenger car engine sound insulation and noise reduction |
| CN107826054A (en) * | 2017-11-29 | 2018-03-23 | 温州市环球汽车衬垫有限公司 | A kind of sound-absorbing hood |
| CN109944404A (en) * | 2019-01-24 | 2019-06-28 | 安徽省新方尊自动化科技有限公司 | Light guiding decoration material based on foamed aluminium |
-
2010
- 2010-06-08 CN CN2010202182444U patent/CN201689671U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318106A (en) * | 2013-06-29 | 2013-09-25 | 贵州大学 | Method and device for passenger car engine sound insulation and noise reduction |
| CN107826054A (en) * | 2017-11-29 | 2018-03-23 | 温州市环球汽车衬垫有限公司 | A kind of sound-absorbing hood |
| CN109944404A (en) * | 2019-01-24 | 2019-06-28 | 安徽省新方尊自动化科技有限公司 | Light guiding decoration material based on foamed aluminium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20130608 |