Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
  • E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
• • 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
  • E04B1/8409—Sound-absorbing elements sheet-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
  • E04B1/99—Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
• • 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
  • E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
  • E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface
• • 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
• • 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

Definitions

• the present invention relates to sound deadening panels for attachment to the face of a wall, floor or ceiling structure and to walls, floors and ceilings having such panels attached thereto.
• a sound deadening panel or panels In order to improve the sound insulation provided by a wall, floor or ceiling structure it is known to attach a sound deadening panel or panels to a face of the structure. These panels typically comprise a flat sheet of plasterboard which is screwed, nailed or otherwise fixed onto a set of parallel spars secured to or forming part of the wall, floor or ceiling structure. In the regions between the spars, the panel abuts a confined volume of air formed by a small air gap, typically between 25mm and 300mm in dimension. Sound deadening panels dissipate vibrational energy and increase the sound insulation provided by the wall, floor or ceiling structure between adjoining rooms in a building.
• a sound deadening panel for attachment to the face of a wall, floor or ceiling structure, the panel having a plurality of attachment sites at which the panel is secured to the structure, wherein the panel is relatively thin in the region of said attachment sites and is relatively thick in the regions remote from the attachment sites.
• the panel is formed from one or more layers which may be formed of plasterboard although they may alternatively be provided for example by timber plank, chipboard, glass, styrofoam or other suitably dense material to enable the panel to achieve its sound deadening or insulating characteristics by sound reflection rather than absorbance.
• layers which may be formed of plasterboard although they may alternatively be provided for example by timber plank, chipboard, glass, styrofoam or other suitably dense material to enable the panel to achieve its sound deadening or insulating characteristics by sound reflection rather than absorbance.
• the present invention provides panels having a set of critical frequencies, where sound insulation at each critical frequency is reduced to a lesser extent than the reduction which occurs at the single critical frequency which exists for conventional panels. From the point of view.of a human observer, the transmission of low levels of sound at a number of frequencies is less obtrusive than transmission of a relatively high level of sound at a single frequency. Furthermore, because the present invention provides a sound deadening or control panel which has increased stiffness at its unsecured regions the amplitude of vibration is reduced across a large area of the panel and as such the transmission of sound at the natural frequency is reduced. In contrast to conventional sound deadening panels which have a uniform thickness across their areas, panels according to the present invention tend to offer higher acoustic insulation across a wide range of acoustic frequencies .
• the variation in thickness of the panel is provided by constructing the panel from a plurality of panel layers forming a laminated-type construction where the layers are successively bonded to one another and have a successively decreasing area so that in cross-section the panel has a generally triangular structure (for example pyramid-like) .
• the panel may be constructed by securing groups of secondary panel layers to a main or front panel, the secondary panels being sized and arranged so that in cross-section the panel has the form of a series of pyramid-like structures arranged side-by-side and separated by a zone of the main panel containing panel attachment sites.
• said panel attachment sites will be provided around the peripheral edges of the panel, for example to enable the panel to be secured to spars or other supports extending in parallel across the supporting structure and which define a fixed spacing for the confined air volume.
• a resilient pad for example of flexible cellular foam, maybe provided at said panel attachment sites to prevent conduction of sound into the support structure at the attachment sites.
• the panel may be provided by a single panel layer which is formed or machined to have a variable thickness across its area. This variation may be continuous (such that the coincidence effect is substantially eliminated) or may be provided by one or more step changes in thickness.
• the panels will be rectangular to enable a plurality of panels to be arranged to cover the entire surface of a wall or floor to be insulated.
• a wall or floor having attached to a side thereof one or more sound deadening panels according to the above first aspect of the present invention.
• Fig 1 shows a horizontal cross-section taken through a wall having a sound deadening panel embodying the present invention attached thereto;
• FIG. 2 shows an enlarged detail of the wall and panel assembly of Fig 1;
• Figs 3 and 4 pictorially illustrate different forms of sound deadening panels embodying the present invention associated with wall structures, with parts cut away in the interests of clarity;
• Fig 5 illustrates a sound deadening panel in the form of a ceiling tile attached to a ceiling structure
• Fig 6 is a sectional view of a modified version of the tile shown in Fig 5.
• FIG. 1 a horizontal cross-section through a wall 1 carrying on one side thereof a sound deadening panel indicated generally by the reference numeral 2.
• the panel 2 is composed of a single outer panel layer 3 which is secured at attachment sites by way of screws 4 to a set of parallel, vertically extending, U-shaped spars 5 (e.g. GYPROC metal studs; type 48S55; 48,70,146mm wide as required or, for ceilings, GYPROC M/F system) which are in turn secured to the wall 1.
• GYPROC metal studs e.g. GYPROC metal studs; type 48S55; 48,70,146mm wide as required or, for ceilings, GYPROC M/F system
• a plurality of first panel layers 6 are bonded at spaced apart intervals to the inner surface of the outer panel 3, with the first panel layers 6 running parallel to one another and extending from the top to the bottom of the wall 1.
• a further corresponding plurality of second panel layers 7 are bonded in turn to the inner surface of respective first panel layers 6 and again extend from the top to the bottom of the wall 1.
• bonding is provided over the entirety of the areas of the smaller panel, for example by a surface film of a suitable adhesive.
• this construction results in a set of pyramid-shaped laminated structures at spaced apart intervals across the width of the panel 2 whilst the outer surface of the outer panel 3 is planar and is available for surface decoration, eg by paint or wallpaper.
• foam strips 8 are Positioned in the gaps between adjacent second panel layers 6 are respective flexible cellular foam strips 8 (made for example of mineral or glass fibre or open cell flexible foam) which are compressed in the region between the spars 5 and the outer panel layer 3.
• the foam strips 8 serve to decouple structureborne sound passing between the wall 1 and the panel 2 via the spars 5.
• the strips 8 also serve to damp acoustic resonances within the cavity formed between the panel and the wall.
• the outer panel layer 3 and the first and second sets of panel layers 6, 7 are provided by plasterboard, for example GYPROC board.
• Gyproc board is generally available in thicknesses of 12.5, 15 or 19mm although it will be appreciated that any suitable thickness of board can be used.
• the foam strips 8 provided in the gaps between the first panel layers 6 are advantageously formed of a flexible open cell polymer foam (e.g. BARAFOAM) .
• known sound deadening panels comprise a single continuous plasterboard panel which is secured to a wall via spars of the type shown in Figures 1 and 2. However, because of the relatively large spacing between the spars, the panels are able to flex, with bending being greatest in the region centrally between two opposed spars.
• the sound deadening panel illustrated in Figures 1 and 2 is stiffer over a large area of the panel, i.e. the effect of the natural resonant frequency of the panel is reduced. Flexing of the panel is thereby reduced and consequently the sound deadening effect of the panel is increased.
• the spars may extend horizontally rather than vertically as described above.
• both horizontally and vertically extending spars may be provided.
• Fig 3 illustrates an arrangement in which the spars 5 are not connected to the wall 1 but instead are connected to transverse spars 5A connected at floor and ceiling level, only the floor-level spar 5A being shown. This arrangement eliminates structureborne transmission of acoustic noise through the spars 5 and into the wall 1.
• the panel 2 is formed of a planar base panel 3 which is a sheet of plasterboard 12.5mm in thickness and on its rear surface between the vertically disposed spars 5 it is provided with a profiled panel 6 which has a vertically extending peak or apex 10 and tapers latterly from that apex towards the spars 5. In the interests of ease of manufacture the panel 6 terminates in shoulders 11 adjacent the spars 5 so that the main panel 3 can be directly secured to the spars 5.
• the profiled panel 6 is conveniently formed of dense polystyrene which is a rigid cellular foam and the panel 6 is bonded throughout its entire surface area to the rear surface of the panel 3. A corresponding panel 6 is located between every pair of spars 5 and a fibreglass quilt may be provided within the air space between the panel 6 and the wall 1.
• the depth of the peak or apex 10 is preferably of the order of 40mm from the rear surface of the plasterboard panel 3 since this figure provides a convenient compromise between the control of acoustic transmission and loss of space within the room.
• the spars 5 conveniently have a depth of about 75mm.
• a panel 2 of similar structure to the panel of Fig 3 is secured to spars 5 carried by the wall 1.
• the spars 5 extend horizontally and consequently the peak or apex 10 and the shoulders 11 also extend horizontally.
• the apex 10 is only of the order of 15mm in depth and typically the spars 5 are therefore only of the order of 20mm in thickness (including the metal attachments which effectively form part of the spars 5) .
• Fig 5 illustrates a panel 2 which is generally similar to that illustrated in Fig 4 but which is adapted for use as a ceiling tile.
• the spars 5 are connected by hangars to the joists 1 which form the ceiling structure and the panel 2 is connected by screws (for example) to the spars 5.
• a fibreglass quilt 12 is schematically illustrated which typically is about 100mm in thickness.
• the apex 10 is preferably 40mm and the shoulders 11 are 10mm in dimension.
• Fig 6 illustrates a modified form of ceiling tile or panel 2 which is generally similar to that illustrated in Fig 5 but the non-exposed surface of the panel 2 is provided with a laminated coating of an open cell foam absorbent such as polystyrene which in addition to absorbing sound renders the panel 2 rectilinear which is convenient for transport and handling.
• an open cell foam absorbent such as polystyrene which in addition to absorbing sound renders the panel 2 rectilinear which is convenient for transport and handling.
• the panels 2 illustrated with reference to Figs 3-6 may additionally include the open-cell foam resilient strip

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• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Acoustics & Sound (AREA)
• Building Environments (AREA)

Applications Claiming Priority (3)

Publications (1)

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ID=10789920

Family Applications (1)

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Family Cites Families (2)

• 1996
  • 1996-03-06 GB GBGB9604729.5A patent/GB9604729D0/en active Pending
• 1997
  • 1997-03-06 CA CA 2248797 patent/CA2248797A1/en not_active Abandoned
  • 1997-03-06 WO PCT/GB1997/000628 patent/WO1997033051A1/en not_active Application Discontinuation
  • 1997-03-06 EP EP97906270A patent/EP0885334A1/de not_active Withdrawn
  • 1997-03-06 GB GB9818308A patent/GB2325259B/en not_active Expired - Fee Related
  • 1997-03-06 AU AU21013/97A patent/AU2101397A/en not_active Abandoned

Non-Patent Citations (1)

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