FR2609786A1 - VENTILATION DEVICE FOR ACOUSTIC INSULATION - Google Patents

Abstract

1. Ventilation device making possible acoustic insulation and installed in a pane or a wall (3), comprising two casings (1, 2) disposed on either side of said pane or wall (3), characterized in that it is constituted of : two identical casings (1, 2) of elongated form, comprising a ventilation aperture (4, 5) in one horizontal wall (6, 7) and which are disposed horizontally, symmetrically about a median horizontal axis, an intermediate support (9), on which each of said casings (1, 2) is fixed in removable manner, this intermediate support taking the place of said pane or wall (3), which has approximately the same mechanical characteristics as the latter and which comprises two circulation apertures (13, 14) disposed in a horizontal plane, and a sleeve (12) of washable laminated material, such as a foam, possessing acoustic insulating properties, surrounding said intermediate support (9) and forming, in combination with insulating materials situated in each of the casings, a duct (16) connecting said ventilation apertures (4, 5) and said circulation apertures (13, 14), so shaped that said duct (16) comprises only smooth walls without roughness.

Description

Ventilation device for acoustic insulation

  The invention relates to a ventilation device

  for sound insulation and installed on a glazing unit or wall, with two

  disposed on either side of said glazing or wall.

  These devices make it possible, on the one hand, to ventilate a room while constituting an insulation

  acoustics of this room in relation to external noise.

laughing.

  The problem of ventilation of premises pre-

  sensing openings such as doors, windows or the like while providing insulation

  acoustics has already been solved in different ways.

  In particular, ventilation devices are known

  which can be arranged both on the materials constituting the walls and on the

  glazed surfaces of the openings of the premises.

  Thus, we already know ventilation devices.

  acoustic tion that consist of one or two housings made from a profile and coming into application on the material of the walls by masking on either side the vents in said wall; these devices use acoustically absorbing materials which are arranged on the one hand on the inside of the housings and, on the other hand, on the support prepared for this purpose, so that they impose on the circulation from the air a non-rectilinear forced trajectory. These devices

  known to meet standards and prescribe

  sound and acoustic insulation and ventilation, take advantage of techniques from the application of physics.

fluids and sounds.

  These known type of ventilation devices

  have disadvantages both for the uses

  readers and for manufacturers. In the case of two different housings arranged one outside the

  the wall, the other inside, the manufacture

  site of many tools, which raises the cost of manufacture. Furthermore, the housings must make it possible to obtain the rejection of water outside and must not interfere with the operation of the openings as well as protections such as shutters, grilles

or the like.

  With regard to users, that is,

  building constructors or renovation workers, they must carry out shaping work to prepare the support for the reception of the devices described

  above, which increases the cost of labor.

  The present invention proposes to provide an acoustic insulation ventilation device, of the type comprising two housings disposed on either side of said glazing or wall whose manufacturing cost and installation is reduced, while

  achieving good sound insulation.

  The ventilation device with acoustic insulation

  according to the invention is particularly remarkable in that it consists of two identical housings

  elongate shape, which include a ventilation hole

  in a horizontal wall and which are horizontally

  horizontally, symmetrically with respect to a horizontal axis

  medial zontal, an intermediate support on which each of said housings is removably attached, which is disposed in place of said glazing or wall,

  which has approximately the same characteristics

  mechanical ticks than the latter and which has two circulation holes arranged in a horizontal plane and a sleeve of washable film material such as a foam having acoustic insulating properties surrounding the space between the two intermediate support circulation holes and realizing in combination with insulating materials located in each of the housings a connecting conduit

  said ventilation holes and said circulation holes

  lation and conformed so that they do not

  only smooth and uneven walls.

  Because the two housings are identical, the manufacturing costs are greatly reduced; Moreover, the duct performing the ventilation having good acoustic qualities, the acoustic insulation is very satisfactory. The device according to the invention can be used both for repair work and for new work. In the case of a restoration, one can use the intermediate support which requires a cut of the wall element but one can also place the housings

  applied to the existing wall without any preparation

  supplementary ration. In the case of new works, only intervenes the intermediate support. Indeed, the manufacturer will prepare a reservation in the wall or ask a window whose dimensions will allow the installation of this intermediate support. This allows on the one hand to standardize the production and on the other hand to protect the shoemakers and sleeves that remain in their original packaging until

their assembly.

  Advantageously, the aforementioned sleeve and the material

  insulation of the housings are shaped so that said conduit has only curved walls and without asperities. In this way, the ventilation

  does not create any noise; moreover, it eliminates the possibility

  dust accumulation in said duct.

  According to another characteristic of the invention, the sleeve is made of a washable film-coated foam. This allows a cleaning of the ventilation device, the duct covering

  after washing its acoustic insulation qualities.

  The intermediate support may be provided at least partially with a bead; in particular, in the case where the device according to the invention is mounted on a glazing, the bead will replace the

  rabbet in places where intermediate support

  diaire is not housed in such a rabbet.

  According to one embodiment of the invention, each casing is constituted by a horizontal profile

  provided with a closing wall at each of its ends

  and the insulating material of the housing is

  killed two identical pieces in the form of troughs which are arranged symmetrically with respect to a median horizontal axis, the free faces of said trough-shaped pieces facing each other, and which comprise on one of their sides an opening opposite the hole ventilation. This embodiment also makes it possible to simplify both the manufacture and the installation of the ventilation device.

according to the invention.

  Other features and benefits

  the invention will emerge from the description which follows

  and the accompanying drawings in which: Figure 1 is a vertical sectional view of a ventilation device according to the invention; Figure 2 is a horizontal sectional view along the line II-II of Figure 1, and Figure 3 is an exploded perspective view.

  of the ventilation device according to the invention.

  As can be seen in particular on the

  1, the ventilation device according to the invention

  consists of two housings, an integrated housing

  1 and an outer casing 2 which are identical and which are placed on either side of a wall or glazing 3; these two housings have a ventilation hole 4 respectively 5, which are arranged in a wall 6 respectively 7 sensitive-

  horizontally. Both housings 1 and 2 are dis-

  positioned relative to each other inversely at 180 about a horizontal axis 8 so that the inner ventilation hole 6 opens upwards and the external ventilation hole 7

leads to the bottom.

  The two housings 1 and 2 are each fixed on an intermediate support 9 which is placed in an opening in the wall or the glazing 3. In the case where the ventilation device according to

  the invention is placed on a glazing, one can

  cut off an upper band in the glazing so that the intermediate support 9 is fixed by the rabbets of the window; a glazing bead (not shown) can advantageously be arranged on said intermediate support in such a way

  to consolidate its fixation on the glazing. This part

  can be placed on the face of the inter-

  mediator 9 who is not engaged in the rabbet.

  The intermediate support therefore replaces the wall or glazing on which the device is placed.

  ventilation according to the invention; it is advantageous

  perform this intermediate support in a material which has the same mechanical characteristics as the wall or the glazing considered so as not to decrease the mechanical strength

  the entire wall or glazing.

  At least one of the ventilation holes 4 or 5 is provided with a filtering device such as a grating

  11 that can be placed outside or inside

  2. This filtering device avoids the introduction of particles of all kinds when it is arranged outside and when it is arranged inside it captures microparticles and thus serves purifier.

  According to the invention, provision is made for a man-

  chon 12 which is made of a material which has acoustically insulating properties; this sleeve is shaped so as to produce, in combination with insulating materials located in each of the housings, a duct connecting the two ventilation holes 4 and 5; for this purpose, there are provided in the intermediate support 9 two circulation holes 13 and 14 which are both arranged in a horizontal plane at each end of said intermediate support 9. As can be seen in particular in Figure 2, the sleeve 12 surrounds the portion 15 of the intermediate support 9 which is between the two circulation holes 13 and 14. Preferably, the sleeve 12 is shaped in such a way that the duct 16 connecting the ventilation holes and the circulation holes have smooth surfaces without unevenness or cracks so as to avoid any

  accumulation of dust in this duct.

  The insulating material used to make the sleeve 12 is preferably a washable film-coated foam; this makes it possible to clean the sleeve, if necessary; indeed, the sound insulation qualities of such a foam are not

  not modified by this washing operation.

  Figure 3 is an exploded perspective view of an embodiment of the invention. It can be seen that the housings consist of a profile section 17 which is closed at each of its ends by a closure wall 18. The ventilation holes are oblong and arranged in the center of the

profile 17.

  On the left side of the figure, half of the sleeve has been shown disassembled. On either side of the intermediate part 9, the absorbent material of the conduit consists of a trough-shaped part 19 whose bottom 21 is disposed on the bottom side of the profile 17, the free face 22 of said trough-shaped piece 19 being directed towards the intermediate support 9 with which it comes into contact when the entire device is mounted. The part 19 has a cover 23 arranged opposite the ventilation hole 4. The invention requires a plate 24 which comes to the bottom of the profile

  17 between the latter and the trough-shaped piece 19.

  As for the housings, the trough-shaped piece 19 arranged outside and which is in

  the profile of the right part of the figure is

  180 with inversion to 180 so that its opening 23 is disposed opposite the ventilation hole which is not visible in the figure. Advantageously, the entire ventilation device according to the invention is removable, the housings 1 and 2 being removably attached to the intermediate support 9. This attachment can be done by snapping the housing on the intermediate support; it is also possible to fix a fastening of an edge of the housing on the intermediate support, the second opposite edge being blocked for example by means of a screw. Finally, it is also possible to fix the housing directly to the intermediate piece by means of direct screwing, and in this case, screw holes are provided in the casing.

each of its ends.

  Advantageously, the housing is provided with joints

  which make it possible to obtain a good seal when

  that it is fixed on the intermediate piece.

  It can be seen that the invention makes it possible to significantly simplify the manufacturing cost of such ventilation devices since the device according to the invention consists only of two identical housings, two identical sleeve elements and an intermediate support. The assembly being easily removable, one can proceed to its maintenance, in particular by washing the sleeve. During disassembly, the intermediate piece remains in place on the wall or glazing and this disassembly operation is very fast since it is sufficient to disengage the housing

  and extracting the sleeve member.

  As can be seen in Figure 1, because of

  alternate arrangement of the two ventilation holes

  4 and outer 5, the latter is disposed in the bottom wall of the outer casing 2. To prevent runoff of water and the penetration of water inside the casing through the outside ventilation hole 5, the edge longitudinal 20 near the ventilation hole protrudes from the plane of the housing as can be seen in particular in Figure 1. Moreover, because the inner ventilation hole 4 which is directed upwards, the fresh air that can

  penetrate by the device is not sent directly-

  people in the room as may be the case with ventilation devices in which the ventilation holes

are arranged vertically.

  As can be seen in particular in FIG. 3, it is advantageous for the intermediate support 9 to protrude beyond the perimeter of the contact surface of the housing. This available space allows the installation of the intermediate support on rabbets provided to initially receive a glazing and to receive

  possibly also a stopper as indicated

  above; this glazing bead fixed on the uprights of the structure then ensures the tight and solid contact of the intermediate support with the glazing or the wall. It is also conceivable, according to an alternative embodiment, an intermediate support which has on one of its edges an integrated bead to its mass, adapted to receive the edge of the glazing, and

than sealing means.

  According to the invention it is also possible to install flow restrictors known as self-adjusting air inlets (flow of about

  m3 / h) inside the outer casing 2.

  This has the advantage of balancing flows in a room that is mechanically ventilated

when necessary.

  The device according to the invention can be used

  se first assembly in the case of a new construction or replacement instead of an existing device; in this case it replaces the old ones

  devices respecting the state of the support.

  In the case where it is desired to avoid shaping work on walls or window pillars, which are increasingly made with materials such as aluminum profiles or other hollow materials prohibiting any intervention in their mass,

  the invention makes it possible to place a ventilation device

  replacing an upper part of a glazing for example. In this case,

  setting up are reduced to the maximum.

  The invention also makes it possible to produce a ventilation duct which presents the internal state of a smooth casing, which makes it possible to respect the

  standards and requirements for sound insulation

  tick. The use of a film-coated foam makes it possible to obtain a device that can be washed

  and cleaned, which increases the effective life.

Claims (8)

  1. Ventilation device for isolating   acoustic insulation and installed on a glazing or a wall (3) comprising two housings (1, 2) disposed on either side of said glazing or wall (3), characterized in that it consists of: two housings The elongate form (1, 2) having a ventilation hole (4, 5) in a   horizontal wall (6, 7) and which are horizontally   horizontally, symmetrically with respect to a horizontal axis   a medial support (9) on which each of said housings (1, 2) is removably attached, taking the place of said glazing or wall (3), which has approximately the same mechanical characteristics as the latter and which comprises two holes   (13, 14) arranged in a horizontal plane.   zontal, and a sleeve (12) of washable film material such as a foam having acoustic insulating properties surrounding said intermediate support (9) and carrying out in combination with insulating materials in each of the housings a conduit (16) connecting said holes of ventilation (4,5) and said circulation holes (13,14), shaped so that said duct (16) has only walls smooth and without asperities.   2. Ventilation device according to the   cation 1, characterized in that the intermediate support   diaire (9) is provided at least partially with a bead. 3. Ventilation device according to one of   1 or 2, characterized in that each   housing (1,2) is constituted by a horizontal profile (17) provided with a closure wall (18) at each from its ends.   4. Ventilation device according to any one   of claims 1 and 3, characterized in that   the absorbent material lining the inside of the housings consists of two identical pieces (19) in the form of troughs which are arranged on either side of the intermediate support (9) in the inverted position at 180, the free faces ( 22) of said trough-shaped pieces (19) facing one another and having on one side an opening (23) facing the hole ventilation (4, 5).   5. Ventilation device according to the   cation 4, characterized in that a plate (24) of insulating material is disposed between the bottom of each housing (1, 2) and the bottom (21) of said trough-shaped piece (19), the plate ( 24) and the bottom (21)   which can also be confused in one single tion.   6. Ventilation device according to any one   one of claims 1 to 5, characterized in that   that each housing (1, 2) is fixed on the intermediate support (9) by snap-fastening, hooking and locking, by sliding on integrated claws   to the intermediate support or by screwing.   7. Device according to any one of the   1 to 6, characterized in that the housing has seals on its edges coming into contact with each other. with the intermediate support (9).   8. Ventilation device according to any one   one of claims 1 to 7, characterized in that   at least one of the ventilation holes is provided with a filter such as a grid (11).