RU2004113075A - NOISE-INSULATING AND NOISE-ABSORBING ACOUSTIC SANDWICH PANEL (OPTIONS) - Google Patents

Claims (18)

1. Noise-insulating and sound-absorbing acoustic sandwich panel formed by the rear and front panels formed in the upper and lower parts with flanges and a sound-absorbing block placed between them, characterized in that it is equipped with flat and volumetric modules mounted sequentially from the outside of the front panel, and the noise absorption block is fixed relative to the front and rear panels by means of glue and / or mechanically, while the flat module is made of at least one layer of fibrous material la, having a surface density in the range of from 100 to 1500 g / m ² and the bulk modulus is made of at least two vertically oriented spacers noise flux and sequentially recorded on the last acoustic membrane and the inclined plate with visors, the latter being mounted horizontally and parallel to to each other with the formation of slit traps, a flat acoustic membrane made of at least one layer of soundproof material having a surface density in the range from 25 to 200 g / m ² and each of the noise flow separators is made of a profile with a resonating cavity and is formed of either fiberglass or basalt plastic or a hybrid based on them or a polymeric material or aluminum or steel. 2. Noise-insulating and sound-absorbing acoustic sandwich panel formed by the rear and front panels formed in the upper and lower parts with flanges and a sound-absorbing block placed between them, characterized in that it is equipped with flat and volumetric modules mounted sequentially from the outside of the front panel, and the noise absorption block is fixed relative to the front and rear panels by means of glue and / or mechanically, while the flat module is made of at least one layer of cardboard or felt from basalt or glass or polymer fiber or from a mixture thereof, and the bulk module is made of at least two vertically oriented noise separators, and sequentially fixed to the last acoustic membrane, and inclined plates with peaks, the latter being mounted horizontally and parallel to each other the formation of slit traps, a flat acoustic membrane is made of at least one layer of soundproof material having a surface density ranging from 25 up to 200 g / m ² , and each of the noise separators is made of a profile with a resonating cavity and is formed of either fiberglass or basalt plastic or a hybrid based on them or a polymeric material or aluminum or steel. 3. Noise-insulating and sound-absorbing acoustic sandwich panel formed by the rear and front panels formed in the upper and lower parts with flanges and a sound-absorbing block placed between them, characterized in that the latter is fixed relative to the front and rear panels by glue and / or mechanically, and the sandwich -panel is equipped with a volume module mounted on the outside of the front panel, made of at least two vertically oriented noise flow dividers and sequentially zaf xenonous on the last acoustic membrane and inclined plates with peaks, while the latter are mounted horizontally and parallel to each other with the formation of slit traps, a flat acoustic membrane made of at least one layer of soundproof material having a surface density in the range from 25 to 200 g / m ^2, and each of the noise flux separators made of a profile with a resonant cavity and is formed of fiberglass or hybrid or basalt or based on them, or polymeric material or aluminum or steel. 4. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that each of the noise stream dividers is made in the form of a linear section of a profile having a section in either a tubular-rectangular shape or a trough closed shape or a trough open with flanges form, with the height of each of the profiles selected in the range γ = 10 ÷ 70 mm 5. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that the inclined plates with peaks can be made in height h = 10 ÷ 100 mm and mounted in such a way that the slot traps are formed by either overlapping each other each other by adjacent plates within ε = 0 ÷ 30 mm, or with the formation of a gap between adjacent plates within

6. Noise-insulating and sound-absorbing acoustic sandwich panel according to claim 5, characterized in that the inclined plates can be made with variable height, which can be changed sequentially from the lower to the upper edge of the sandwich panel or by any other algorithm. 7. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that the inclined plates with peaks can be made of fiberglass or basalt plastic or a hybrid material based on glass and basalt plastic or a polymeric material or steel or aluminum, or made of aluminum or steel alloys. 8. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2, characterized in that the flat module can be made with a thickness β = 2 ÷ 20 mm, and the material layers of the flat module can be fixed relative to each other, for example, mechanically and / or by glue. 9. Noise-insulating and sound-absorbing acoustic sandwich panel according to claim 1, characterized in that the flat module layers can be made of needle-punched non-woven material based on polyester or polypropylene or polyethylene fibers or from a mixture thereof. 10. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that the flat acoustic membrane and its sound-permeable layers can be fixed on noise separators and relative to each other, mechanically and / or by means of glue. 11. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that the soundproof layers of a flat acoustic membrane can be made either of thermally bonded non-woven material based on polyester, polypropylene or polyethylene fibers or a mixture thereof, or from polymer or glass or basalt or their mixture of fabric. 12. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that the sound-absorbing block is made in the form of a plate or mat with a thickness of δ = 40 ÷ 150 mm. 13. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that the upper flanges of the sandwich panel are formed with fixing elements, for example, longitudinal protrusions or recesses, and the lower flanges are formed with fixing elements, such as recesses or protrusions, while the profiles of the fixing upper and lower flanges are made mirrored and aligned. 14. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that it can be equipped with vibration damping gaskets made of rubber or polyethylene foam or plastic and placed between the upper and / or lower flanges of the metal shell. 15. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that the front and rear panels can be made of steel alloy or aluminum alloy. 16. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that the side ends of the sandwich panel can be closed either with a polymer film fixed by means of glue and / or mechanically, or metal or polymer covers fixed mechanically . 17. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that the front panel can be perforated, with any form of perforating holes and their uniform distribution on the plane, with the percentage of perforation relative to the front plane panels can range from 10 to 70%. 18. Noise-insulating and sound-absorbing acoustic sandwich panel according to claims 1 or 2 or 3, characterized in that the rear panel can be made with stiffeners.