BUILDING WITH SOUND-ABSORBING CONSTRUCTION SYSTEM

Description

[0001] The present invention relates to a building with a sound-absorbing construction system.

[0002] In buildings, especially in halls, offices, open spaces, schools and the like, sound-absorbing and / or sound-damping walls or building elements are required to avoid background noise that disturbs teaching, work, conferences and the like.

[0003] A variety of sound-absorbing / sound-reducing components are known.

[0004] A method for applying an insulating cellulose fiber material to a substrate is known from EP 1 635 957, the method consisting in mixing cellulose fibers with adhesive and an aqueous solution to obtain such a mixture and in applying the mixture to a surface, the mixture comprising an additional material in the mixture which prevents whitening.

[0005] An acoustic coating comprising a binder and a natural fiber is known from EP 2 157 063, wherein the natural fiber has a fiber length of 0.1 to 5 mm and a thickness of 1.2 dtex to 4.5 dtex, a fiber length of 0.1 to 8 mm and a thickness of 4.5 dtex to 15 dtex and a fiber length of 0.1 to 8 mm and a thickness of 15 dtex to 50 dtex.

[0006] EP 0 759 110 B1 also describes a system for interior walls, floors and the like in buildings, comprising a first layer of rock wool which is attached to a wall and the like, and a second layer of cotton fibres which is sprayed onto the first layer of rock wool.

[0007] WO 2012 / 095562 describes a coating composition containing a mixture of natural, dry-content fibers and cellular plastic granules mixed in water. By applying this composition to any substrate, in particular by spraying and curing, in particular by drying, the coating composition is formed into the coating according to the invention, which has very good acoustic properties. If a special fiber base panel made of chemical paste is used as the coating base, the acoustic panel according to the invention is obtained. EP 1 300 511 discloses both a method and a composition for producing a thermoformable acoustic panel. The panel can consist of multicomponent polymer fibers or monofilament polymer fibers dispersed in a mineral fiber panel.The polymer fibers are bonded to the mineral fibers by heat to form the acoustic panels.

[0008] US 2020 / 370294 A1 discloses a building according to the preamble of claim 1.

[0009] All the elements described in these publications absorb a specific, very limited spectrum of acoustic waves, and in particular low frequencies are not absorbed.

[0010] The Italian patent 102017000023953 describes a system for the absorption and / or reduction of sound, consisting of at least a first polyester fiber panel, called polyester panel, with a thickness between 20 mm and 150 mm and a surface area between 0.01 m2 up to 9 m2 and covered on at least one surface with a mixture formed per m2 from 140-240 g of cotton blend and 1.5 to 2.5 l of water, the cotton blend containing between 88-92% cotton fibers and between 8-12% cellulose with a fiber length of 0.1-2 mm with a thickness of 2-5 dtex, and a second panel has a surface area between 0.4 and 2 m2 and a thickness between 40 and 150 mm and has between 1 and 6 grooves, the grooves having a width between 2 and 80 mm and a length between 2-1800 mm, and the grooves are formed in the sheathing of the second panels and the center of the second panels is formed by polyester,preferably by a polyester panel with a thickness between 20-30 mm and a density between 20-50 kg / m 3< .,

[0011] This publication presents the problem of arranging two different panel types side by side, especially with different thicknesses, which also requires complicated disassembly after installation during on-site planning. Furthermore, the panels and systems described so far have a relatively high density and corresponding dimensions, which result in stress on the structure and a loss of interior space, which can lead to a deterioration of the indoor climate, etc.

[0012] The aim of the present invention is to realize a building with a sound-absorbing system, wherein the sound-absorbing system absorbs the different frequencies, has a uniform surface and can be easily installed on site without the need to adapt the system to the structural conditions, and which has a lower weight and a smaller size, in particular a lower thickness.

[0013] This object is achieved by a building according to the characterising part of claim 1.

[0014] The system of the building according to the invention consists of a supporting frame made of a metal profile, which is preferably arranged on a surface, an interior surface of a building. The supporting frame consists of at least two crossbeams arranged substantially parallel to each other at a distance of 40 to 75 cm from each other, and the supporting frame is attached to an interior surface of a building. Panels are attached to the supporting frame, which have a coating on the side opposite the frame, on the upper side facing the interior of the room. This coating is made from a mixture of 300-700 g of cotton blend and 4-6 liters of water per m², wherein the cotton blend consists of 80-95% cotton fibers or a mixture of 80-95% cotton and wood fibers and 5-18% cellulose with a fiber length of 0.2-4 mm.

[0015] The panels are preferably made of polyester and have a thickness between 9 and 24.

[0016] The panels are attached to a supporting frame, such as a profiled metal or wooden frame. The distance between the crossbeams is 40 to 75 cm. This allows the coated panel to flex and vibrate to better absorb sound.

[0017] The crossbeams space the panels from the building's surface. This creates a chamber between each crossbeam, which can be partially filled with polyester fiber panels, fiberglass panels, or wood fiber panels.

[0018] The supporting frame that forms the system can be part of the suspended ceiling.

[0019] In the following, a system of the building according to the invention is described in a non-limiting manner with reference to the drawings: Figure 1 shows a section through a system according to the invention, Figure 2shows a front view of the partially assembled system according to the invention, Figure 3 shows a front view of the system according to the invention, which is partially assembled in a second embodiment, Figure 4 shows a section through a system according to the invention in a second embodiment, Figure 5 shows a diagram of the absorption of the system according to the invention, and Figure 6 shows a diagram of the absorption of the system according to the invention in a second variant in which the system is mounted at a distance from the surface.

[0020] In Figure 1 is a structural sound-absorbing system attached to an interior surface of a building 200, in particular a ceiling, designated by the reference number 100. The system according to the invention consists of a cross member 102, which can be connected to a suspended ceiling made of insulating material 202, a supporting frame 101 and a space 105, as shown in the Figures 1 and 2 shown in the graphic in Figure 6 The behavior is shown for the case where the panels are at a distance of about 20 cm from the ceiling or are suspended at a distance of about 20 cm.

[0021] The system 100 according to the invention comprises at least two substantially parallel crossbeams 102, between which a gap 105 is formed, which is covered by a panel 103 attached to the edges of the crossbeams 102. The panels 103 advantageously have a thickness between 5 and 30 mm, preferably between 9 and 24 mm. The crossbeams 102 are spaced apart from one another by 40 cm to 75 cm. In this way, the panel 103 can bend in both directions.

[0022] The gap 105 may be empty, as shown in the first embodiment, or filled with filling material 116, as shown in the second embodiment in Figure 4 shown.

[0023] Panel 103 is coated with a coating consisting of a mixture of 300-700 g of cotton blend and 4-6 l of water per m2, the cotton blend comprising between 80-95% cotton fibers or a mixture of 80-95% cotton fibers and wood fibers and between 5-18% cellulose with a fiber length of 0.2-4 mm.

[0024] In the first embodiment, the cross members 102 are arranged in a cross shape and form rectangular spaces. However, the lateral cross members 102 are not required.

[0025] The panels 103 can be connected to the cross members 102 by screws, as in Figure 1shown, or in another embodiment, for example, by magnets attached to the panels 103. In this way, the sound-absorbing panels 103 can also be easily and quickly detached from the structure at a later date. This may be necessary, for example, if electrical elements or other elements are to be subsequently replaced on the sound-absorbing system.

[0026] The Figures 3 and 4show a second embodiment in which the crossbeams 112 are attached directly to the surface of the building 200. In this case, too, the crossbeams 112 are arranged substantially parallel to each other at a distance of 40 cm to 75 cm from each other. To ensure better sound insulation, the panels 116 are made of polyester fibers, glass fiber, and / or wood fiber. However, there is always a gap 115 between the panel 113 coated with the compound 114 and the filling material and / or the panel 116, which allows the panels 113 to bend and vibrate.

[0027] In Figure 5 a diagram is shown in which the development of sound absorption as a function of frequencies is marked X, whereby a system according to the invention has a minimum thickness.

[0028] Advantageously, the distance between the connection of the cross beams 112 to the building and the panel 113 coated with the mass 114 has a thickness of less than 5 cm, preferably less than 4.5 cm.

[0029] Finally, it is clear that additions, modifications or variants of the structural sound absorption system described here may be applied which are obvious to a technician in the field of technology, without thereby departing from the scope of protection of the appended claims. List of reference numbers

[0030] 100 Structural sound insulation systems 101 Supporting frame 102,112 Cross beam 103,113 Panel 104,114 Composite, composite coating layer 105,115 Cavity 116 Filling material / panels 200 Building 201 Ceiling surface 202 Insulation material

Claims

1. Building (200) with a sound-absorbing construction system (100) for the interior of the building (200), with a support frame (101) arranged on a building surface of the building (200), wherein the support frame (101) is formed from at least two cross beams (102, 112), characterised in that the cross members (102, 112) are arranged essentially parallel to each other at a distance of 40 to 75 cm from each other and that the supporting frame (101) is fastened to the inner surface of the building, wherein panels (103, 113) are fastened to the cross members (102, 112) which have a coating (104, 114) on the side facing the interior of the room on the side opposite the cross members (102, 112) and that this coating is applied by means of a mixture per m2, the mixture being made from 300-700 g of cotton mixture and 4 to 6 l of water, wherein the cotton mixture comprises between 80-95% cotton fibres or a mixture of between 80-95% cotton fibres and wood fibres and between 5-18% cellulose with a fibre length of 0.2-4 mm, and that the panels are preferably made of polyester and have a thickness of between 9-24 mm, and that on the the side opposite the coating (104, 114) between the cross members (102, 112) there is at least one empty and / or partially empty space (105, 115).

2. Building with sound-absorbing construction system (100) according to claim 1, characterised in that the space is partially filled with a filling material / panels (116) comprising polyester fibres, glass fibre panels and / or wood fibre panels.

3. Building with sound-absorbing construction system (100) according to claim 1 or 2, characterised in that the distance between the connection of the cross members (112) to the building and the panel (113) coated with the mass (114) has a thickness of less than 5 cm, preferably less than 4.5 cm.

4. Building with sound-absorbing construction system (100) according to one of the preceding claims, characterised in that the panels (103, 113) are connected to the cross members (102, 112) by means of a detachable magnetic connection.