FI3504382T3 - Fixing profile allowing the air passage and assembly of ceiling comprising such a profile - Google Patents

Description

FIXING PROFILE ALLOWING THE AIR PASSAGE AND ASSEMBLY OF

CEILING COMPRISING SUCH A PROFILE

TECHNICAL FIELD OF THE INVENTION

[0001] The invention relates to the field of false ceilings, and in particular that of stretched ceilings.

[0002] The invention relates more particularly to a canvas hanger profile for making a stretched ceiling in a room, allowing air to be circulated therein. — [0003] The circulated air can come from a system for ventilation and/or air conditioning (heating, cooling, dehumidification, humidification).

PRIOR ART

— [0004] Examples are known of false ceilings allowing air to pass through the room to be conditioned. In particular, a false-ceiling fastening system is known that allows the hanger profiles of the false ceiling to be spaced apart by means of brackets or spacers fastened at regular intervals, thus creating a peripheral space. Patent application FR2815112 as well as

FR 2 597 906 can be cited by way of example. — [0005] However, the systems or profiles of the prior art do not allow precise control of the diffusion of air at the periphery of the room. Furthermore, they do not make it possible to do without air suction grilles, which are commonly used and which are detrimental to the aesthetics of the room.

[0006] On the other hand, it is known from FR 2 619 531 to provide a canvas hanger profile of which the central core is closed by a flexible strip for the passage and the blocking of a non-deformable hook for hanging the canvas, the profile having various perforations in the flexible strip as well as in the wall opposite its wing for fastening to the wall. These perforations are in the form of segments having a smaller width than those of the screws for fastening the profile to the wall, with a relatively short length, while also being spaced apart from each other, not allowing for easy circulation of air between the plenum and the room, especially since the central core of the profile is almost completely closed by the flexible strip for holding the canvas hook.

[0007] International application WO 02/06604 also describes a canvas hanger profile of which the two opposite wings—the wing for fastening to the wall and the canvas hanger wing—both have perforations allowing air to circulate above the canvas, but of which the central core is closed by a flexible strip for the passage and blocking of a non-deformable canvas hook, which strip also closes the space between the wall and the fastening wall, preventing any air circulation between the plenum and the room, which are separated from each other by the canvas.

[0008] The invention aims to solve these problems by providing a hanger profile for the simple and fast mounting of a ceiling assembly allowing the circulation of fresh and/or conditioned air within a room.

[0009] The invention also aims to provide a ceiling assembly for precisely controlling the diffusion of air at the periphery of the room.

[0010] The invention also aims to provide a ceiling assembly making it possible to do without any visible device, and in particular grilles, while ensuring the circulation of air — within the room in question, the circulation of air being related to the air conditioning or ventilation of the room in guestion.

AIM OF THE INVENTION

— [0011] For this purpose, and according to a first aspect, the invention provides a canvas hanger profile for making a stretched ceiling in a room to be conditioned, as defined by claim 1.

[0012] According to the invention, a second wing of the profile is provided with an end for blocking a canvas hook, the connecting wall and the hanger wing being arranged to define — together an unclosed air-passage slot through the profile, which slot is delimited by the end for blocking the canvas hanger wing hook, the profile having at least one through opening arranged to allow air to pass through said profile from or towards the slot.

[0013] Advantageously, on the other hand, the air-passage slot is delimited by the wall or by the profile fastening wing.

[0014] The configuration of the profile according to this invention thus makes it possible to define, along the entire length of the wall, an open air-passage slot between the plenum and the room, without any obstruction or impediment to the passage of air, unlike the prior art documents mentioned above. The openings provided on the hanger wing and/or the connecting wall of the profile according to this invention, which may each represent an open surface area of several square centimeters (e.g., 4 cm”), with a spacing of less than 1 cm from one another, can form, for one meter of profile according to the invention, a total open surface area of several hundred square centimeters, thus providing maximum air circulation.

[0015] In addition, openings are provided on the profile according to the invention on the hanger wing, which is inclined, and, according to the invention, on the connecting wall which extends horizontally between the room and the plenum, thus facilitating air circulation between the room and the plenum. — [0016] Advantageously, one of the wings, which is the canvas hanger wing, converges towards the wing for fastening the hanger profile or the wall to which the hanger profile is fastened. According to a particular configuration, the canvas hanger wing is arranged to have an angle of inclination with respect to the other wing of less than 90 degrees, and preferably between 30 and 50 degrees. — [0017] Advantageously, the passage opening(s) is (are) provided on the canvas hanger wing or on the connecting wall. According to an alternative embodiment, it may also be possible for both the canvas hanger wing and the connecting wall to have at least one through opening.

[0018] The advantage of such an arrangement of the hanger profile (positioning of the through openings on the canvas hanger wing and/or the connecting wall converging toward the hanger profile) is to prevent the through opening which opens toward the upper slab from being visible from the room when the stretched ceiling is in place.

[0019] Advantageously, the canvas hanger wing is provided with a plate for supporting a separation wall. — [0020] Advantageously, the wings are arranged to define a slot communicating with the through opening, said slot being delimited by the wing for fastening the profile to the wall or by the wall itself when the hanger profile is fastened to said wall and by the canvas hanger wing.

[0021] Advantageously, the hanger profile has a deflector that is provided in the slot and is arranged to deflect the air flow through the profile towards the through opening or the slot depending on whether the air enters through the slot or through the opening.

[0022] Ideally, the profile according to the invention is formed by the association of two distinct parts secured to one another, the first part forming a profile, one of the branches of which forms the fastening wing, with the second part forming a profile provided with a means of attachment to the first part and at least one means for hanging a canvas.

[0023] In this case, the means of attachment is in the form of an internal groove for receiving the end of a branch of the first part of the profile, said groove being made in the thickness of the second part of the profile.

[0024] Advantageously, one or the other of the alternatives for making the profile according to the invention can be provided with at least one cover for closing a through opening for the passage of air. This cover or these covers are inserts that can be positioned on certain openings of the profile to limit air circulation at this location, for example to protect a decorative element such as a work of art positioned at that location of the wall.

[0025] As will be understood upon reading the detailed description of non-limiting embodiments, the hanger profile according to the invention has the following advantages: - allowing for simultaneously blowing and sucking in air - doing without the air grilles of the prior art systems —- controlling the diffusion of air in the room - not seeing what is located above the peripheral slot - allowing easy mounting of the stretched ceiling - allowing the association of any eguipment for ventilation and air conditioning (heating, cooling, dehumidification, humidification). — [0026] The invention also relates to a ceiling assembly allowing air circulation within a room to be conditioned, the ceiling assembly comprising at least one stretched ceiling defining, with the upper slab of the room to be conditioned under which a plenum is mounted, the stretched ceiling comprising at least one stretched canvas extending between the walls of the room to be conditioned and fastened thereto by means of hanger profiles, at least one of the hanger profiles being a hanger profile as described above so as to allow the passage of air between the plenum and the room.

[0027] Advantageously, the wings of the hanger profile are arranged to define a slot communicating with the through opening and oriented so that the air exiting from the plenum circulates along the wall on which said profile is fastened. The air blown along the vertical walls provided with a hanger profile allowing the passage of air will allow the temperature of the walls to be regulated, thus reducing the temperature difference between these walls and the ambient air.

[0028] Advantageously, the plenum has a first and a second space that are separated by a separation wall, one of the spaces defining a plenum space for the entry of air into the room, the other space defining a plenum space for the exit of air from the room.

[0029] Advantageously, the ceiling assembly comprises a plenum delimited by a stretched 5 — ceiling mounted in a room adjacent to the room to be conditioned and the upper slab of the adjacent room, said plenum being separated from the plenum of the room to be conditioned by a partition traversed by at least one duct allowing fluid communication between the two plenums.

[0030] Advantageously, the ceiling assembly is eguipped with a ventilation system and/or an air conditioning system fluidically connected, at least at the entry, to the plenum of the room to be conditioned.

[0031] Advantageously, the air conditioning system is housed in the plenum of the adjacent room.

[0032] The ceiling assembly and hanger profiles according to the invention offer the — possibility of, according to a first configuration, blowing and sucking in air within the same room, and therefore in the same volume and, according to a second configuration, blowing air within the room to be conditioned (ventilation and/or air conditioning) and sucking in air in an adjacent room.

[0033] In the case where the air is blown and sucked in in the same room, the plenum — between the upper slab and the stretched ceiling will be advantageously separated into two distinct volumes that are sealed from one another. This separation can be achieved in two ways: either by means of a “conventional” separation profile supported on a vertical separation wall, with the stretched ceiling then being equipped with a “separator” at the level of the separation profile, or by means of a special profile of the hanger profile (profile with a plate for fastening a vertical separation wall). In the latter case, there is no need to install a separator on the stretched ceiling.

[0034] The ceiling assembly and the hanger profiles according to the invention therefore make it possible to handle the following three scenarios: - air-conditioned and/or ventilated room with air suction in an adjacent room, - air-conditioned and/or ventilated room with blowing and suction of air within the same room and use of a separator on the stretched ceiling, - air-conditioned and/or ventilated room with blowing and suction of air within the same room and use of the special suction profile.

[0035] The ceiling assembly thus created with the hanger profiles according to the invention makes it possible to completely do without any air blowing or suction grilles so that the aesthetics of the room are improved.

[0036] Furthermore, during the use of a system for heating or air conditioning, some of the power will be transmitted by radiation (hot or cold) from the ceiling, the rest by the circulation of air blown through the profiles (at the periphery of the room), thus generating excellent thermal comfort for the occupants.

BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Other aims and advantages of the invention will appear in the description that follows, with reference to the attached drawings, in which: - Fig. 1 isa schematic view of a ceiling assembly; - Fig. 2 is a perspective view of a profile for use in the fastening assembly of Fig. 1; - Figs. 3 to 7 show various embodiments of a ceiling assembly using a fastening profile of Fig. 2; - Fig. 8 isa perspective view of a hanger profile according to a second example; - Fig. 9 isa perspective view of a hanger profile according to another example; - Figs. 10 to 12 show various embodiments of a ceiling assembly using the fastening profile of Fig. 9; - Fig. 13 shows the hanger profile of Fig. 9 provided with a protective mesh; - Fig. 14 is a perspective view of a hanger profile provided with a filter; - Fig. 15 is a perspective view of a hanger profile according to the invention; - Fig. 16 is a schematic view of a ceiling assembly using another hanger profile according to the invention; - Fig. 17 is a perspective view of the hanger profile implemented in the ceiling assembly of Fig. 16; - Fig. 18 is a schematic cross-sectional view of a hanger profile made of two parts according to a first embodiment, mounted on a wall and supporting two canvases; - Fig. 19 1s a schematic cross-sectional view of a two-part hanger profile according to a second embodiment, mounted on a wall, supporting a canvas and provided with internal brackets for fastening functional elements;

- Figs. 20a) to 20d) show a first embodiment of a cover for the openings of a hanger profile according to the invention with, respectively: o a top view (Fig. 20a) e a bottom view (Fig. 20b) o a front three-guarter perspective view (Fig. 20c) o a side view (Fig. 20d) - Figs. 21a) to 21d) show a second embodiment of a cover for the openings of a hanger profile according to the invention with, respectively: o a top view (Fig. 21a) o a bottom view (Fig. 21b) o a front three-guarter perspective view (Fig. 21c) o a side view (Fig. 21d) - Fig. 22 shows an alternative embodiment of the hanger profile of Fig. 19.

[0038] For greater clarity, the same or similar elements of the different embodiments are identified by identical references in all the figures.

DETAILED DESCRIPTION OF THE DRAWINGS

[0039] Fig. 1 is a schematic view of a ceiling assembly allowing the circulation of air within a room to be conditioned 1. “Room to be conditioned” means a room intended to receive air that is fresh or is to be conditioned depending on the system used (ventilation system as shown in Fig. 1 or air conditioning system).

[0040] In the embodiment shown, the ceiling assembly uses a stretched ceiling (or false ceiling) inside the room to be conditioned 1, which ceiling is formed by a stretched canvas 3 extending between the walls 4a, 4b of the room to be conditioned 1 and fastened to said walls via hanger profiles and delimiting, with the upper slab 8, a plenum 14 and a plenum 16 that are separated in a sealed manner by a wall 11 provided with a separation profile 27.

[0041] In order to allow the circulation of air in the room, two of the walls of the room are provided with hanger profiles arranged to allow air to pass between the plenums 14 and 16 and the room to be conditioned 1. Depending on whether they allow the passage of blown fresh air or the passage of sucked-in air, mention will be made of a blowing profile 6a and a suction profile 6b. However, these profiles are identical. Examples of blowing/suction profiles will be described below.

[0042] As shown in Fig. 1, the suction profiles 6b are fastened to the walls located opposite the walls provided with blowing profiles 6a. This has the advantage of achieving an optimal air sweep of the room to be conditioned 1.

[0043] The ceiling assembly also has a vertical separation wall 11 arranged in the plenum 14 to delimit two spaces, one of the spaces defining a plenum space for the entry of air into the room, the other space defining a plenum space for the exit of air from the room. In the following, the blowing plenum 14 will be that in which fresh air is received and the suction plenum 16 will be that in which the sucked-in air from the room to be conditioned 1 is received. — [0044] In order to ensure a sealed separation between the two spaces, the separation wall 11 is attached by its lower part to a separation profile 27 that joins the stretched ceiling as depicted in Fig. 1. Such a separation profile is known per se.

[0045] The blowing plenum 14 is eguipped with an air duct 17 for blowing fresh air, said duct passing through the wall of the portion of the upper slab 8 delimiting the blowing plenum. Similarly, the suction plenum 16 is equipped with an air duct 18 for the suction of air, said duct passing through the portion of the upper slab delimiting the suction plenum.

[0046] Fig. 2 shows an embodiment of a blowing and suction profile 6a, 6b for the passage of air between the room to be conditioned 1 and the associated plenums 14 and 16, implemented in the ceiling assembly of Fig. 1. — [0047] The blowing and suction profile 6a, 6b has a first vertical wing 60 and a second vertical wing 61 that are connected to one another by a horizontal connecting wall 62.

[0048] The first wing defines a fastening wing 60 for fastening the profile to the wall. In order to do this, the fastening wing has holes 21 for the passage of fastening means such as screws, rivets or the like. In the embodiment shown, the fastening wing 60 extends from — the connecting wall and above said wall (i.e. upwards). It is extended in its lower part by a third vertical wing 63.

[0049] The second wing defines a hanger wing 61 for hanging the canvas. The hanger wing converges towards the third wing. Advantageously, the hanger wing has an angle of inclination with respect to the third wing of between 30 and 50 degrees, and preferably of — 45 degrees. According to Fig. 2, this hanger wing 61 has, on its inner wall directed towards the wall, a means 30 for hanging a canvas hook 50, which means is configured to place the canvas hook at a distance from the wall along which said wing runs, so as to define a slot for the passage of air. The hanger means 30 thus places the canvas hook along the lower edge of the hanger wall 61, leaving a slot for the passage of air between the hook and the wall (or the third vertical wing 63). For example, the distance separating the hanger end of the means 30 can be between 0.5 and 5 cm, preferably between 1.5 and 3 cm, and yet more preferably approximately 2 cm. Ideally, as for the examples shown, the canvas hook can be elastically deformable, and the hanger means 30 can be in the form of a C-shaped hook in cross-sectional view, curved towards the inner wall of the hanger wall 61 so as to form, together with this inner wall, a channel for the passage of the elastically deformed hook, leading to a groove for receiving the hook in its non-deformed configuration, and an edge for blocking the hook received within the groove and kept at a distance from the wall 4a by — the hanger wall 61 so to allow air to pass through.

[0050] Thus, as shown, the hanger wing defines, together with the third wing, a slot 22 having a through opening 22a that has an opening axis substantially parallel to the wing for fastening to the wall. This makes it possible to ensure an air supply at the entry of the room along the wall on which the blowing profile 1s fastened and, at the exit of the room (and therefore at the entry of the plenum), air suction having a trajectory substantially tangential to the wall supporting the suction profile. The slot allows, with the openings in the hanger wing, the passage of air between the plenum and the room.

[0051] The blowing and suction profile 6a, 6b has through openings 19 for the passage of air between the plenum and the room. In the embodiment shown, the openings are rectangular windows aligned along the hanger wing. This is of course one embodiment, and the openings can have another form and/or be arranged in a different way. Furthermore, the number of openings is variable and a single opening or a plurality of openings may be provided. There may also be no opening, with the profile thus configured then becoming a “conventional” profile 7 for hanging the stretched ceiling. — [0052] Advantageously, hanger profiles 6a, 6b are available in different sizes, these sizes offering different widths of the slot 22 located in the lower part of the profile and therefore different cross sections of the opening 22a. The use of blowing profiles in different sizes thus allows for perfect speed control of the air blown at the periphery of the walls eguipped with these profiles. The air speed is calculated as a function of the flow rate of blown air, and is determined so as to obtain a sufficient range of the flow of blown air in order to reach the bottom of the vertical wall while observing very weak velocities of air as perceived by the occupants of the room and thus ensuring optimal comfort. In the same way, the use of suction profiles of different sizes makes it possible to control the speed of suction in order to ensure an optimal air sweep.

[0053] Advantageously, the blowing and suction profile 6a, 6b has a deflector 23 (Fig. 8) to deflect the air flow towards the through openings or the slot depending on whether the air enters through the slot or the through openings. The presence of a deflector has the advantage of improving the passage of the air by minimizing the air passage resistance and therefore the air pressure losses of the profiles. In the embodiment shown in Fig. 8, the deflector connects the connecting wall to the third wing. The deflector can be of any shape (straight, curved, etc.), the optimal shape however being a circular arc, as shown in Fig. 8.

[0054] Fresh air is blown via the blowing duct through the upper slab into the blowing plenum, so as to pass through the blowing profile. At the exit of the blowing profile, due to the orientation of the slot 22, fresh air flows along the wall equipped with the profile.

[0055] The sucked-in air is drawn towards the stretched ceiling along a trajectory substantially tangential to the wall provided with the suction profile, so as to pass through — the suction profile. The sucked-in air is then extracted from the blowing plenum via the extraction duct.

[0056] The adjacent room 2 is shown equipped with a stretched ceiling. It is of course obvious that said room could be not eguipped with a ceiling, since the adjacent room is not used for the circulation of air in the room to be conditioned, unlike the ceiling assemblies — shown in Figs. 3 to 7, 11 and 12.

[0057] Fig. 3 shows a particular embodiment in which fresh air is blown in the room to be conditioned 1 and the air suction is carried out in an adjacent room 2.

[0058] The room to be conditioned 1 is eguipped with a stretched ceiling 3 delimiting, together with the upper slab, a plenum. The stretched ceiling hangs from the walls 4a, 4b of the room via hanger profiles. In the embodiment shown, only one of the walls, the furthest away in the example (wall 4a), is eguipped with a profile allowing the passage of air, the remaining walls being equipped with conventional hanger profiles 7 (i.e., that are not arranged to allow air to pass through), it being also possible for these profiles 7 to be made using profiles 6a/6b not provided with openings 19 for the passage of air on the wing 61. In the example shown, the profile is a blowing profile 6a.

[0059] Similarly, the adjacent room 2 is equipped with a stretched ceiling 5 delimiting, together with the upper slab, a plenum 15. The stretched ceiling is hung on the walls of the adjacent room via hanger profiles, at least one of the hanger profiles being a suction profile

6b. If all the walls are not eguipped with suction profiles 6b, the remaining walls can be equipped with conventional profiles 7 for hanging a stretched ceiling. In the example shown, only one wall, here the furthest away from the room to be conditioned (wall 4c), is provided with suction profiles.

[0060] The plenum 14 of the room to be conditioned 1 forms the blowing plenum while the plenum 15 of the adjacent room 2 forms the suction plenum.

[0061] In the embodiment shown, the sucked-in air passes between the volume of the conditioned room 1 and the volume of the adjacent room 2 via an existing gap or a gap created for this purpose between the two rooms, for example a clearance under the door 4 separating the two rooms. The sucked-in air then reaches the plenum 15 through the peripheral suction slot 22 produced by installing suction profiles 6b.

[0062] The sucked-in air will then be extracted from the plenum of the adjacent room via an air duct 18 passing through the upper slab from the plenum of the adjacent room.

[0063] Fig. 4 shows another embodiment in which the circulated air is conditioned air from an air conditioning apparatus 12 located in the adjacent room to the room to be conditioned 1.

[0064] The ceiling assembly follows the arrangement of the ceiling assembly in Fig. 3, in which the fresh air entry duct and the exhaust air duct are replaced respectively by a blowing air duct 9 connected to the exit of the air conditioning apparatus and by a suction air duct 10 connected to the entry of the air conditioning apparatus, the blowing duct passing through the wall separating the plenum of the room to be conditioned from the plenum of the adjacent room. As before, the plenum of the room to be conditioned forms the blowing plenum while the plenum of the adjacent room forms the suction plenum.

[0065] The conditioned air is blown into the plenum of the room to be conditioned 1 by the — air conditioning apparatus via the blowing duct which passes through the blowing profile, so as to run along the wall equipped with the profile. The sucked-in air passes between the volume of the conditioned room 1 and the volume of the adjacent room 2 via a gap between the two rooms. The sucked-in air then reaches the plenum 15 of the adjacent room through the peripheral suction slot 22 produced by the suction profile 6, where it reaches the air conditioning apparatus via the suction air duct 10.

[0066] In some cases, however, it is not possible to produce a sufficient gap between the room to be conditioned 1 and an adjacent room 2 to convey the flow of sucked-in air. This may be the case, for example, in rooms that must provide acoustic insulation. The ceiling assembly shown in Fig. 5 helps to overcome this constraint. The ceiling assembly used has a similar arrangement to the ceiling assembly in Fig. 1. It also has a suction air duct 15 passing through the partition separating the suction plenum of the room to be conditioned and the plenum of the adjacent room in which the air conditioning apparatus is installed, as well as a blowing air duct 9 passing through the partition separating the two rooms and passing through the separation wall 11 separating the suction plenum and the blowing plenum of the room to be conditioned. In this case, the adjacent room is eguipped with a stretched ceiling 5 hung on the walls of the adjacent room via conventional hanger profiles 7 (Le. that are not arranged to allow air to pass through). — [0067] As in the ceiling assembly of Fig. 1, the sucked-in air reaches the suction plenum 16 through the peripheral suction slot 22 produced by installing the associated suction profile 6. The sucked-in air then reaches any air conditioning machine by means of the suction air duct 10. The conditioned air is then recirculated via the blowing duct 9.

[0068] It may also be possible to connect the suction air duct 10 and the blowing air duct 9 respectively to an extraction/exit air duct 18 and a fresh air entry duct 17 communicating with the outside of the adjacent room and the associated plenum (Fig. 6), so as to carry out both the air conditioning and ventilation of the room to be conditioned 1.

[0069] The ceiling assembly thus created makes it possible to condition a room that is highly sealed (for acoustic reasons, for example) in relation to its adjacent rooms 2.

[0070] Fig. 9 shows an alternative embodiment of the hanger profile according to the invention. In this alternative embodiment, the hanger profile 24 has the same shape as the profile in Fig. 2 except that it also has a horizontal plate 25 extending below the through openings in a direction away from the third wing. The function of the plate is to support a vertical separation wall without having to install a visible separator on the stretched ceiling, as shown in Figs. 10 to 12. This improves the aesthetic appearance of the stretched ceiling while ensuring air circulation within the room.

[0071] As shown in Figs. 10 to 12, the suction profiles 24 are fastened to the walls opposite the walls provided with the blowing profiles. This has the advantage of achieving an optimal air sweep of the room to be conditioned 1.

[0072] The plate 25 can be advantageously provided with a rising element at its end or with any means for attachment of the vertical separation wall.

[0073] Advantageously, the blowing and suction profiles 6a, 6b, 24 can be provided with a mesh placed on the openings 19 in order to cover them. The presence of a mesh thus prevents any impurity or any insect from gaining access to the plenum 14, 15, 16 located between the upper slab and the stretched ceiling. By way of example, the suction and blowing profile 24 is shown having such a filter 26 (Fig. 13).

[0074] According to a particular alternative embodiment, the profiles 6b, 24 intended for suction may be provided with a filter. This filter will then be able to replace filters present in the ventilation and/or air conditioning machinery connected to the system.

Advantageously, the filter can be removed to allow replacement or cleaning thereof. Fig. 14 shows a possibility of integrating such a filter into a suction profile of the type of that of the profile 24. In the embodiment shown, the filter 28 is held against the inside face of the hanger wing 61, is positioned on the stop 20b delimiting the groove 20 for hanging the canvas, and is retained by a longitudinal tongue 28 supported by the inner face of the connecting wall 62. *Inner face” is understood to mean the faces oriented towards the slot 22.

[0075] It is of course obvious that the hanger profiles are not limited to those described above and that other configurations can be provided without departing from the invention.

In particular, a profile without a third wing may be provided. In this case, the slot will be delimited by the canvas hanger wing and the wall on which the profile is fastened.

Similarly, the third wing may be the fastening wing.

[0076] Similarly, in the embodiments previously described, the through openings 19 are in — the canvas hanger wing 61. According to an alternative embodiment, the through openings 19 are provided not in the hanger wing, but in the connecting wall 62. For example, the profile in Fig. 9 is shown having such a positioning of the through openings 19 (Fig. 15).

[0077] The ceiling assembly is compatible with any air conditioning and/or ventilation technology. Air conditioning and/or ventilation apparatuses can be placed in the plenum 14 located above room to be conditioned 1, in the plenum 15 of any adjacent room to the room to be conditioned 1, but also in any other location of the building. In a general way, the installation of apparatuses outside the volume of the room to be conditioned 1 will be favored, notably so as to avoid any noise pollution due to the operation of the machinery.

[0078] Regardless of the air conditioning and/or ventilation possibilities of the room, the invention allows the implementation of any type of stretched ceiling (conventional, acoustic, etc.) and allows the use of any process compatible with stretched ceilings, for example backlighting systems, sound systems, etc. In addition, an LED-strip system could be installed in the corner between wing 61 and connecting wall 62, thus providing peripheral lighting for the room without the LED strip being visible.

[0079] In general, within the room to be conditioned, at least one wall will be equipped with a blowing profile. It will be possible to select the walls equipped with blowing profiles 6 and therefore to select the walls along which the conditioned air and/or fresh air is blown.

The other walls can be equipped with conventional profiles 7 for hanging the stretched ceiling. This selection allows the thermal comfort of the room to be optimized. In particular, a selection will be made, for example, to blow air along the external walls of the room, which are generally colder than the ambient air during winter and warmer than the ambient air in the summer.

[0080] Fig. 16 shows another embodiment of a ceiling assembly, the latter comprising lighting means 40 fastened to the upper slab 8.

[0081] The ceiling assembly shown is a stretched ceiling formed by two stretched canvases 3a, 3b extending between the walls 4a, 4b of the room to be conditioned. Said canvases 3a, 3b, which are arranged parallel to each other, are fastened to the walls by means of two hanger profiles 32, 34, one constituting a blowing profile 32, the other constituting a suction profile 34. An enlarged view of the blowing profile 32 is shown in Fig. 17.

[0082] As in the embodiments of the hanger profiles previously described, the blowing profile 32 has a fastening wing 60 connected to the canvas hanger wing 61 by a connecting — wall 62. As shown in Fig. 17, said wings 60, 61 are arranged so that, when the blowing profile 32 is fastened to the wall 4a, the hanger wing 61 is inclined with respect to the connecting wall, converging towards the wall 4a. The hanger wing 61 has two grooves 20a, 20b for hanging said canvases 3a, 3b. One of the grooves is provided in the upper part of the hanger wing 61, with an opening on the inside of the profile, the other groove being — provided in the lower part of the hanger wing 61. The through openings 19 for the passage of air between the plenum 14 located above the upper stretched canvas 3b are provided in the connecting wall 62.

[0083] The blowing profile 32 also has a vertical wing 64 extending from connecting wall 62, in parallel with the fastening wing 60, in a direction away from the hanger wing 61. In the embodiment shown, the vertical wing 64 is provided at the end of the connecting wall 62. The function of this vertical wing 64 is to prevent the diffusion of light from the lighting means 40 via the through openings 19 and the through slot 22. In the following, this will be called the blocking wing 64 (or shield-forming wing).

[0084] In order to avoid any shadows on the canvas, the ceiling assembly has a substantially V-shaped profile 36 fastened to the upper slab 8 of the room, in the vicinity of the hanger profile 32, as shown in Fig. 16. In particular, the profile 36 1s arranged in relation to hanger profile 32 in such a way as to leave sufficient space between the blocking wing 64 and the profile 36 to allow the passage of air from the fresh-air-blowing air duct 17.

[0085] In the embodiment shown, the hanger profile 32 and the profile 36 are two separate and independent parts. However, these two profiles can, according to an alternative embodiment, form a single part. In this case, the blocking wing 64 would also comprise, like the connecting wall 62, through openings to allow air circulation.

[0086] The suction profile 34 has all the features of the blowing profile 32, except that, in contrast thereto, it has no blocking wing. The diffusion of light is blocked, in the ceiling assembly shown in Fig. 16, by the separation wall 11 of the blowing plenum 14 and the suction plenum 16 of the room. Obviously, a suction profile 34 identical to the blowing — profile 42 can also be provided without departing from the scope of the invention.

[0087] In addition to or instead of the lighting means 40 provided in the plenum 14 of the ceiling assembly, lighting means may be provided that are fastened in the upper part of the hanger profile according to the invention, preferably on the face of the blocking wing 64 oriented towards the wall 4a, 4b, so as to provide lighting at the periphery of the room or the frame. In this case, suction profiles 34 having blocking wings 64 will preferably be provided.

[0088] According to a particular embodiment that is not shown, it may also be possible to position a loudspeaker or other audio eguipment in the vicinity of the through openings 19 to ensure efficient sound transmission. — [0089] According to another advantageous embodiment, shown in Figs. 18 and 19, the blowing and suction profile 6a, 6b can be two independent parts 70, 71 to be fastened to each other.

[0090] In the example shown, the first profile part 70 is the fastening wing 60 and part of the horizontal connecting wall 62, and the second profile part 71 is the remaining part of the horizontal connecting wall 62 and the inclined hanger wing 61.

[0091] The first part of profile 70 is defined in a particularly simple form: that of a longitudinal profile with an L-shaped cross section, the vertical branch of which constitutes the fastening wing 60 and the horizontal branch 73 of which constitutes a portion of the horizontal connecting wall 62.

[0092] For the purpose of air circulation, the horizontal branch of the L-shaped profile will be provided with an opening 19 for the passage of air.

[0093] The second part of profile 71 is slightly more complex and has the general form of a longitudinal profile with a trapezoidal cross section, of which the long base 74, the short base 77 and the lateral side 75 interposed therebetween form the inclined hanger wing 61, the opposite lateral side 76, which is horizontal, forming the remaining part of the horizontal connecting wall 62. — [0094] More precisely, as can be seen in Fig. 18, the second profile part has a longitudinal groove 78 for receiving the end of the horizontal branch 73 of the L of the first profile part 70. An added blocking means, such as a screw, can be provided to engage in an aperture 79 formed in the upper surface of the end of the horizontal branch of the L in order to block said end, passing through the thickness of the upper lateral side of the second profile part.

A mark 80 may be provided on the external surface of the upper lateral side 76 of the second profile part so as to correctly position the screw or other blocking means opposite the aperture 79 prior to its insertion into said aperture.

[0095] This second part of profile 71 comprises, on the external surface of its lateral side 75, which is vertical, the aforementioned hook 30 allowing the passage in a deformed configuration, then the blocking in a resting configuration, of an elastically deformable hook 50 for hanging a primary stretched canvas 3a.

[0096] Advantageously, this second part of the profile 71 may comprise a second means for hanging an elastically deformable hook for a secondary stretched canvas 3b, as shown in Fig. 18. This second hanger means 81 is, for example, provided in the form of a — longitudinal groove partially closed by at least one edge (two in the figure) for retaining the hook of the second canvas, which groove is formed from the outer surface of the long base 74 of this second profile part, for example immediately below the groove 78 for receiving the end of the first profile part.

[0097] This second canvas 3b will be able to fulfill the function of collecting and retaining deposits caused by dust and/or insects so that these deposits remain at a distance from the underlying primary canvas and cannot be seen from the room through the canvas when, for example, it is provided translucent.

[0098] The second part of the profile may also comprise various recesses 82 (identified in

Fig. 19) arranged in the thickness of this second profile part, between the two hook blocking grooves, to house brackets or fastening sleeves 83 for functional elements arranged in the plenum, or simply for lightening the structure of this second part of the profile 70 so as to optimize the cost. Lugs 86 may be provided that protrude from the wall forming these recesses in order to partition their space and to accommodate a plurality of brackets or block said brackets in their respective recesses.

[0099] At the end of the second profile part 71, forming the junction between the horizontal upper side and the inclined long base, an inclined groove can be made in the thickness of — this second profile part in parallel with the external surface, in order to hold and fasten a blocking wing or a “shield-forming wing” as set out above.

[0100] For air circulation purposes, through openings 19 for the passage of air may be provided in this second profile part on the walls constituting the short base and long base, which through openings are in communication with each other.

[0101] These openings, like those in the first part of the profile, can be closed 1f necessary, by covers provided for this purpose and shown in Figs. 20, 21.

[0102] These covers 90 may be in the form of parallelepiped blocks, an upper face of which is provided with a lateral edge 91 intended to be applied against the contour of the opening 19 that the cover in question closes, and the lower face of which 1s provided with elastically deformable strips 92 that move aside as they pass through the opening and lock behind the contour delimiting said opening. In the example shown, the elastic strips extend along the length of the lateral sides of the parallelepiped block, except at the corners of the block.

[0103] Visual marks 88 taking the form of excess thickness or longitudinal beads may be provided on the external surfaces of each profile part 70, 71 in order to easily and precisely connect two profile parts end to end if necessary.

[0104] The formation of the suction or blowing profile in two parts thus defined 1s particularly clever because the second, more complex part 71 can be mass-produced with a single dimension, while the first, extremely simple, part 70 can be produced with different dimensions, in particular regarding the length of the branch of the L to be fastened to the second profile part, for adjustment as needed by a simple selection of L-profile available, the desired spacing between the wall and the edge of the canvas and thus the size of the slot and the air circulation.

[0105] Consequently, the L-shaped profile in Fig. 19 has a longer horizontal branch that places the edge of the primary layer 3 at a longer distance from the wall 4a than the edge of the primary layer 3 in the alternative embodiment of Fig. 18, where the horizontal branch of the L-shaped profile is shorter.

[0106] Fig. 22 shows an alternative embodiment to the blowing and suction profile 6a, 6b of Fig. 19. In this alternative, the second part of profile 71 has the same features as the one shown in Figs. 18 and 19. In contrast, the first part of the profile 70 no longer has an L- shaped cross-section, but has a right-angled Z-shaped cross-section. More precisely, the first part of the profile 70 consists of two horizontal branches connected together by a vertical branch, said horizontal branches extending away from each other. The upper horizontal branch, which is provided with reference sign 60, forms the fastening wing. Said branch is fastened to the wall 4a via a strip forming a bracket 60b. The lower horizontal branch, which is provided with reference sign 73, forms a portion of the horizontal connecting wall 62. In order to allow air circulation, the vertical connection branch, numbered 60a, is provided with a through opening 19 for the passage of air. As before, the opening(s) provided on the first part of the profile 70, like those of the second part of the profile 71, can be closed by covers if necessary, as described above.

[0107] The invention is described above by way of example. It is understood that a person skilled in the art is able to carry out various alternative embodiments of the invention — without departing from the scope of the invention as defined by the appended claims.