GB2157337A - Sound absorption panels - Google Patents
Sound absorption panels Download PDFInfo
- Publication number
- GB2157337A GB2157337A GB08506542A GB8506542A GB2157337A GB 2157337 A GB2157337 A GB 2157337A GB 08506542 A GB08506542 A GB 08506542A GB 8506542 A GB8506542 A GB 8506542A GB 2157337 A GB2157337 A GB 2157337A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ridged
- block
- sheeting
- sound
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/86—Sound-absorbing elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8461—Solid slabs or blocks layered
- E04B2001/8471—Solid slabs or blocks layered with non-planar interior transition surfaces between layers, e.g. faceted, corrugated
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
- E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
- E04B2001/8485—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the opening being restricted, e.g. forming Helmoltz resonators
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
A sound absorption panel comprises a block of sound absorbing material of which the active surface 1 (ie the surface facing and absorbing sound) is ridged, loosely laid flexible water impermeable protective sheeting 2 substantially covering the ridged surface and a perforated protective sheet 3 covering the covered ridged surface. This construction allows the active surface of the block to be protected from water and dust without serious impairment of the sound absorbing properties of the panel. <IMAGE>
Description
SPECIFICATION
Sound absorption panels
This invention relates to a sound absorption panel.
Sound absorption panels are known which comprise flat-surfaced blocks of sound absorbing material which are faced with perforated protective sheets which may be made of metal. Such panels are effective for reverberation control and in absorptive silencers but may suffer if they are brought into contact with for example water or dust which may affect the sound absorbing material.
It has been proposed that the blocks should be protected by surrounding them with water impermeable flexible protective sheeting, which may be for example, polyethylene polypropylene, PVC or polyester sheets before facing them with the perforated protective sheets. However, when this is done the sound absorbing properties of the panel may be seriously impaired.
This invention comprises sound absorption panels which comprise a block of sound absorbing material of which the active surface (i.e. that which is effective in absorbing sound) is ridged, loosely laid flexible water impermeable protective sheeting substantially covering the ridged surface and a perforated protective sheet covering the covered ridged surface.
It is preferred that the flexible water impermeable protective sheeting should be polyester sheeting, for example polyethylene terphthalate sheeting, suitably that sold under the trade mark 'Melinex', as this has excellent physical properties. The sheeting should not be drawn tightly over any substantial part of the surface. It is suitably up to 50 microns thick.
The surface of the block may be formed into for example wedge like sinusoidal or other shaped ridges. It is preferred that they be shaped such that the portions of the ridged surface of the block contacting the perforated protective sheet are as small a proportion of the total ridged surface of the block as possible, for example at most 15% and preferably at most 10% of the total ridged surface.
The ridges may be for example 10 to 1 000mm preferably 10 to 1 00mm and more preferably 25-100mm deep from peak to trough measured perpendicularly to the plane of the surface and adjacent peaks may be 20 to 600 and preferably 20 to 200mm apart.
The ridges may in plan be linear, curved or angled, for example they may be circular.
The perforated protective sheets are preferably sufficiently rigid and robust to protect the block from mechanical damage under the conditions of use. They are suitably made of metal, for example steel or aluminium, or of other sheet or board materials, for example hard board, PVC or plaster board.
The sound absorbing material may comprise for example mineral wool, glass wool or opencelled foams.
Suitably if any of the surfaces of the block are not ridged they are used as edges or the back of the panel, as if they are also faced with water impermeable protective sheeting their sound absorbing properties will of course be poor.
The panels may be used to face walls, the protective sheeting being secured so as to protect the sound absorbing material or they may be free standing in which case the metal sheeting may be part of a housing surrounding the sound absorbing material and the water impermeable sheeting.
If two opposite sides of the block are to be active surfaces both should be ridged and covered with loosely laid flexible water impermeable protecting sheeting with perforated protective sheets covering both.
The panels may be incorporated into silencers which comprise ducts for gases which may flow in a straight or tortuous path, a substantial area of the surfaces of the silencer facing the path of gas flow being active surfaces of panels according to the invention.
Suitably the path of gas flow is straight and the panels constitute dividers of a duct carrying the gas. In this construction the silencer may comprise a parallel array of spaced panels according to the invention, the spaces between the panels constituting pathways for the gas and the surfaces of the panels facing the pathways being active surfaces.
The panels may be curved; for example they may be formed as hollow cylinders of which the inner surface is active and of which the centre may constitute a duct for gases; very suitably however they are substantially flat.
One form of the invention will now be described with reference to the accompanying drawing which shows a section through a panel according to the invention.
A block of sound absorbing material (1) consisting of resin bonded mineral fibre of density 64kg per cubic metre has an overall thickness of 1 OOmm and is formed as a base 50mm thick surmounted by triangular wedges which may be integral, glued, pinned or laid as separate elements on the base which are 50mm high with 1 00mm bases. The ridges are loosely covered with a sheet of polyethylene terephthalate sheeting (2) of thickness 23 microns which is sold under the trade mark 'Melinex' by Imperial Chemical Industries
PLC. A protective facing of 2mm thick steel steel sheet (3) perforated with 1 Omm diameter holes to give 37% open area covers the ridged surface.
The dimensions of the sound absorbing material, the gauge of the water impermeable sheeting, and the gauge and perforation of the perforated protective sheet may be varied in order to meet the requirements of particular duties.
CLAI MS
1. A sound absorption panel which comprises a block of sound absorbing material of which the active surface is ridged, loosely laid flexible water impermeable protective sheeting substantially covering the ridged surface and a perforated protective sheet covering the covered ridged surface.
2. A panel according to claim 1 in which the water impermeable protective sheeting is polyester sheeting.
3. A panel according to claim 1 or 2 in which the ridges of the block are 10 to 1 OOmm deep from peak to trough measured perpendicularly to the plane of the surface, and in which adjacent peaks are 20 to 200mm apart.
4. A panel according to claim 3 in which the ridges of the block are 25 to 1 OOmm deep from peak to trough measured perpendicularly to the plane of the surface.
5. A silencer which comprises ducts for gases in which a substantial area of the surfaces of the silencer facing the path of the gas flow comprise active surfaces as hereinbefore defined of panels as claimed in any preceding
Claims (1)
- claim.6. A sound absorbing panel substantially as described with reference to the drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08506542A GB2157337B (en) | 1984-04-05 | 1985-03-13 | Sound absorption panels |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB848408739A GB8408739D0 (en) | 1984-04-05 | 1984-04-05 | Sound absorption panels |
| GB08506542A GB2157337B (en) | 1984-04-05 | 1985-03-13 | Sound absorption panels |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8506542D0 GB8506542D0 (en) | 1985-04-17 |
| GB2157337A true GB2157337A (en) | 1985-10-23 |
| GB2157337B GB2157337B (en) | 1987-05-13 |
Family
ID=26287566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08506542A Expired GB2157337B (en) | 1984-04-05 | 1985-03-13 | Sound absorption panels |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2157337B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0385087A3 (en) * | 1989-03-03 | 1991-06-12 | Acouver S.A. | Sound absorbing and insulating barrier |
| EP4311892A1 (en) * | 2022-07-30 | 2024-01-31 | Aneta Tabor Tomisol | A damping and sound-absorbing plate made of fiber material and an acoustic silencer made of this plate |
| PL131620U1 (en) * | 2023-08-22 | 2025-02-24 | Tabor Aneta Tomisol | Insulating and sound-absorbing board made of fibrous material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1049419A (en) * | 1963-11-21 | 1966-11-30 | Sulzer Ag | Improvements in and relating to sound-absorbent coverings |
| GB2036933A (en) * | 1978-05-22 | 1980-07-02 | Alphadyne Inc | Acoustical panel |
| US4441578A (en) * | 1981-02-02 | 1984-04-10 | Rohr Industries, Inc. | Encapsulated bulk absorber acoustic treatments for aircraft engine application |
-
1985
- 1985-03-13 GB GB08506542A patent/GB2157337B/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1049419A (en) * | 1963-11-21 | 1966-11-30 | Sulzer Ag | Improvements in and relating to sound-absorbent coverings |
| GB2036933A (en) * | 1978-05-22 | 1980-07-02 | Alphadyne Inc | Acoustical panel |
| US4441578A (en) * | 1981-02-02 | 1984-04-10 | Rohr Industries, Inc. | Encapsulated bulk absorber acoustic treatments for aircraft engine application |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0385087A3 (en) * | 1989-03-03 | 1991-06-12 | Acouver S.A. | Sound absorbing and insulating barrier |
| EP4311892A1 (en) * | 2022-07-30 | 2024-01-31 | Aneta Tabor Tomisol | A damping and sound-absorbing plate made of fiber material and an acoustic silencer made of this plate |
| PL131620U1 (en) * | 2023-08-22 | 2025-02-24 | Tabor Aneta Tomisol | Insulating and sound-absorbing board made of fibrous material |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8506542D0 (en) | 1985-04-17 |
| GB2157337B (en) | 1987-05-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19940314 |