ITMI20131540A1 - SOUNDPROOF DEVICE, PARTICULARLY FOR VENTILATION CHANNELS. - Google Patents

Description

SOUNDPROOFING DEVICE, PARTICULARLY FOR VENTILATION CHANNELS.

DESCRIPTION

The present invention relates to a soundproofing device, particularly for ventilation channels, and the related manufacturing method.

In the field of soundproofing of ventilation or aeration channels, the use of tubular silencers consisting of rigid tubular modular elements is known, which are inserted in the opening of a ventilation channel, in series and / or in parallel, allowing the passage of the air flow in the longitudinal direction, but at the same time absorbing the noises generated by the air flow itself as it passes through the channel.

Said tubular silencers of the known type are not free from drawbacks, among which it should be noted in particular that the rigid tubular modular elements have large dimensions, such as to make their transport particularly expensive.

The main aim of the present invention is to provide a soundproofing device, particularly for ventilation channels, which solves the technical problem described above, obviates the drawbacks and overcomes the limits of the known art, having a very reduced size compared to devices of the type known .

Within this aim, an object of the present invention is to provide a soundproofing device which is easily transportable, thanks to the fact that it has reduced overall dimensions and is particularly light.

Another object of the invention is to provide a soundproofing device which is easy to clean.

A further object of the invention consists in providing a soundproofing device which is easy and immediate to install in the ventilation channels.

Another object of the invention is to provide a soundproofing device which is versatile and easily adaptable to the dimensions of the ventilation channel.

A further object of the invention is to provide a soundproofing device which has an excellent equalization efficiency of the air flow and which has low pressure drops.

A further object of the invention consists in providing a soundproofing device which has an excellent noise absorption efficiency, and which can also be used as a thermal barrier.

A further object of the invention is to provide a soundproofing device which is capable of giving the greatest guarantees of reliability and safety in use.

Another object of the invention is to provide a soundproofing device which is easy to manufacture and economically competitive if compared to the known art.

The aforementioned task, as well as the aforementioned purposes and others which will appear better later, are achieved by a soundproofing device, particularly for ventilation channels, comprising a multilayer structure, characterized in that said multilayer structure comprises a first layer of flexible material , defining the external surface of said device, and a second layer of flexible material, defining the internal surface of said device, between said first layer and said second layer being comprised of the sound-absorbing material, said multilayer structure being able to pass from a flat configuration to a tubular configuration.

Further characteristics and advantages will become clearer from the description of a preferred but not exclusive embodiment of a soundproofing device, particularly for ventilation channels, illustrated by way of non-limiting example with the aid of the attached drawings in which:

Figure 1 is a perspective view of an embodiment of a soundproofing device, particularly for ventilation channels, according to the invention, in a tubular configuration;

Figure 2 is a perspective view of the soundproofing device of Figure 1, according to the invention, in a flat configuration;

Figure 3 is a cut-away perspective view of a detail of the soundproofing device of Figure 2;

Figures 4 to 8 illustrate a sequence of manufacturing steps of the soundproofing device according to the invention;

Figure 9 is a perspective view of a plurality of soundproofing devices, according to the invention, associated with each other in a modular manner.

With reference to the aforementioned figures, the soundproofing device, particularly for ventilation channels, globally indicated with the reference number 1, comprises a multilayer structure.

According to the invention, the multilayer structure comprises a first layer 3 of flexible material, defining the external surface of the device 1, and a second layer 5 of flexible material, defining the internal surface of the device 1. Between the first layer 3 and the second layer 5 is comprised of sound-absorbing material 7. The multilayer structure is suitable for passing from a flat configuration to a tubular configuration.

The first layer 3 of flexible material and the second layer 5 of flexible material are advantageously made of a textile fiber material, preferably of the type of hygienic fabric. The material in which the first layer 3 and the second layer 5 are made is also advantageously washable, and can be made of non-combustible materials.

The sound-absorbing material 7 is advantageously a material of the type of rock wool or of the type of glass fiber, or the like. Said sound-absorbing material 7 advantageously also has thermal barrier properties.

The soundproofing device 1 advantageously comprises fixing elements 9 suitable for maintaining the multilayer structure in a tubular configuration. The multilayer structure can comprise at least two side flaps 11, 13 which can be folded back on themselves and mutually fixed at the respective ends by means of the aforementioned fastening elements 9, so that the multilayer structure assumes the tubular configuration.

The fastening elements 9 may comprise a plurality of press studs distributed along the ends of the side flaps 11 and 13, or a strip of material known by the trade name of "Velcro", the strips of furry fabric and of fabric with hooks being placed along the ends of the side flaps 11 and 13 respectively.

Between the first layer 3 and the second layer 5 a plurality of pockets 15 are advantageously defined to receive the sound-absorbing material 7.

The pockets 15 are advantageously separated by longitudinal seams 17 along which the first layer 3 and the second layer 5 are joined.

The pockets 15 are also advantageously closed at the longitudinal ends by transverse seams 19 along which the first layer 3 and the second layer 5 are joined.

The multilayer structure is advantageously foldable on itself at the longitudinal seams 17, to define the tubular configuration.

The junction between the first layer 3 and the second layer 5 along the aforementioned longitudinal 17 and transverse 19 seams can be achieved by sewing, or by gluing, or further by means of high-frequency or ultrasonic joining techniques.

The sound-absorbing material 7 advantageously comprises a plurality of panels 21 of sound-absorbing material, each inserted in a respective pocket 15.

The soundproofing device 1, in the tubular configuration, can advantageously have a square-shaped section, as shown in the accompanying figures, but also a rectangular, or triangular, or other shape considered suitable. The soundproofing device 1 can also have different dimensions according to the type of use and the type of acoustic and aerodynamic characteristics desired.

As illustrated by way of example in Figure 9, a plurality of soundproofing devices 1 in tubular configuration can be associated in a modular manner, in series and / or in parallel, to suitably cover the opening of a ventilation channel, for a desired length.

The method for manufacturing a soundproofing device, particularly for ventilation channels, is described below, with particular reference to the sequence of steps illustrated in Figures 4 to 8.

The method for manufacturing the soundproofing device 1 comprises the steps of:

- superimposing between them a first layer 3 of flexible material and a second layer 5 of flexible material (Figure 4);

- sewing together the first layer 3 and the second layer 5 along a plurality of longitudinal seams 17, to define a plurality of pockets 15 (Figure 5);

- inserting sound-absorbing material 7 into each of the pockets 15 (figure 6);

- sewing together, at the longitudinal ends, the first layer 3 and the second layer 5, along transverse seams 19, to close the sound-absorbing material 7 in the pockets 15, and to create a multilayer structure (figure 7);

applying fastening elements 9 to the lateral ends of the multilayer structure, for example in correspondence with the lateral edges 11 and 13 of the structure itself.

In this way a soundproofing device 1 is obtained, in the flat configuration, as illustrated in figure 2.

The method for making a soundproofing device 1 can also comprise the steps of:

- folding the multilayer structure on itself, along the longitudinal joining lines 17 (figure 8);

- fix the lateral ends of the multilayer structure using the fixing elements 9 (figure 8).

In this way a soundproofing device 1 is obtained, in the tubular configuration, as illustrated in Figure 1.

The soundproofing devices 1, in the flat configuration, have extremely reduced dimensions and are easily transportable, for example stacked one on top of the other.

The soundproofing device 1 can assume the tubular configuration during installation inside a ventilation duct, simply by folding the multilayer structure on itself and closing it by means of the fastening elements 9. In other words, the operator can easily transport the soundproofing devices 1, in the flat configuration, near the ventilation duct in which they are to be installed, and, creating the tubular configuration required for installation by simply folding the various flaps of the soundproofing device 1 and fixing its lateral ends using the elements fixing 9. This operation can be quickly repeated for each soundproofing device required.

In practice it has been found that the soundproofing device, particularly for ventilation channels, according to the present invention, achieves the intended aim and objects, since it allows it to be easily transported, thanks to the minimum overall dimensions when it is in a flat configuration.

Another advantage of the soundproofing device, according to the invention, consists in the fact that it can assume the tubular configuration directly on the installation site, by means of simple and natural gestures by an operator.

A further advantage of the soundproofing device according to the invention consists in the fact that it guarantees high noise absorption efficiencies and also acts as a thermal barrier.

Another advantage of the soundproofing device according to the invention consists in being easily washable.

A further advantage of the soundproofing device according to the invention consists in the fact that it can be easily produced in various shapes and sizes, according to the desired use.

The soundproofing device thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept.

Furthermore, all the details can be replaced by other technically equivalent elements.

In practice, the materials employed, so long as they are compatible with the specific use, as well as the contingent shapes and dimensions, may be any according to requirements.

Claims (10)

R I V E N D I C A Z I O N I 1. Soundproofing device (1), particularly for ventilation channels, comprising a multilayer structure, characterized in that said multilayer structure comprises a first layer (3) of flexible material, defining the external surface of said device (1), and a second layer (5) of flexible material, defining the internal surface of said device (1), between said first layer (3) and said second layer (5) being comprised of the sound-absorbing material (7), said multilayer structure being adapted to switch from a flat configuration to a tubular configuration. 2. Soundproofing device (1), according to claim 1, characterized in that it comprises fastening elements (9) able to maintain said multilayer structure in said tubular configuration. 3. Soundproofing device (1), according to claim 1 or 2, characterized in that said multilayer structure comprises at least two side flaps (11, 13) which can be folded back on themselves and can be reciprocally fixed to the respective ends by means of said fastening elements (9 ), to define said tubular configuration. 4. Soundproofing device (1), according to one or more of the preceding claims, characterized in that between said first layer (3) and said second layer (5) a plurality of pockets (15) suitable for receiving said sound-absorbing material are defined (7). 5. Soundproofing device (1), according to one or more of the preceding claims, characterized in that said pockets (15) are separated by longitudinal seams (17) along which said first layer (3) and said second layer ( 5) are united. 6. Soundproofing device (1), according to one or more of the preceding claims, characterized in that said pockets (15) are closed at the ends by transverse joining lines (19) along which said first layer (3) and said second layer (5) are joined. 7. Soundproofing device (1), according to one or more of the preceding claims, characterized in that said multilayer structure can be folded back on itself at said longitudinal junction lines (17), to define said tubular configuration. 8. Soundproofing device (1), according to one or more of the preceding claims, characterized in that said sound-absorbing material (7) comprises a plurality of panels (21) of sound-absorbing material inserted in said pockets (15). 9. Method for making a soundproofing device (1), particularly for ventilation ducts, characterized by the fact of: - superimposing a first layer of flexible material on a second layer of flexible material; sewing said first layer and said second layer together along a plurality of longitudinal seams, to define a plurality of pockets; inserting sound-absorbing material in said pockets; sewing together, at the longitudinal ends, said first layer and said second layer along transverse seams, in order to close said sound-absorbing material in said pockets and create a multilayer structure; - applying fastening elements to the lateral ends of said multilayer structure. 10. Method for manufacturing a soundproofing device (1), according to the preceding claim, characterized in that it comprises the steps of: - folding said multilayer structure on itself, along said longitudinal junction lines; fixing said lateral ends of said multilayer structure by means of said fastening elements.