U.S. patent application number 15/648196 was filed with the patent office on 2018-06-14 for air outlet for a ventilation device.
The applicant listed for this patent is Knauf Gips KG. Invention is credited to Claus -Peter Berneth, Marc Hagedorn, Petra Stocklein, Michael Viebahn.
Application Number | 20180163988 15/648196 |
Document ID | / |
Family ID | 53040491 |
Filed Date | 2018-06-14 |
United States Patent
Application |
20180163988 |
Kind Code |
A9 |
Berneth; Claus -Peter ; et
al. |
June 14, 2018 |
AIR OUTLET FOR A VENTILATION DEVICE
Abstract
Air outlet for a ventilation device, the ventilation device
comprising at least an air outlet, an air supply means, and an air
guiding device, wherein the air outlet includes a plate having air
outlet openings, and wherein the air outlet is in the installed
state foldably mounted to an interior paneling such that it can be
folded out of the interior paneling to allow for accessing a space
there-behind.
Inventors: |
Berneth; Claus -Peter;
(Marktbreit, DE) ; Hagedorn; Marc;
(Niederbergheim, DE) ; Viebahn; Michael; (Iphofen,
DE) ; Stocklein; Petra; (Ochsenfurt, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Knauf Gips KG |
Iphofen |
|
DE |
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|
Prior
Publication: |
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Document Identifier |
Publication Date |
|
US 20170307250 A1 |
October 26, 2017 |
|
|
Family ID: |
53040491 |
Appl. No.: |
15/648196 |
Filed: |
July 12, 2017 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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PCT/EP2015/000797 |
Apr 16, 2015 |
|
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15648196 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
E04F 13/007 20130101;
E04B 9/003 20130101; F24F 2221/26 20130101; F24F 7/10 20130101;
E04B 9/02 20130101; F24F 13/06 20130101; F24F 2221/14 20130101;
F24F 13/072 20130101 |
International
Class: |
F24F 13/072 20060101
F24F013/072 |
Claims
1. An air outlet for a ventilation device, the ventilation device
comprising at least an air outlet, an air supply means, and an air
guiding device, wherein the air outlet includes a plate having air
outlet openings, and wherein the air outlet is in the installed
state foldably mounted to an interior paneling such that it can be
folded out of the interior paneling to allow for accessing a space
there-behind.
2. The air outlet according to claim 1, wherein the interior
paneling is a drywall ceiling or a drywall wall.
3. The air outlet according to claim 2, wherein the plate has a
cover frame which at least partially covers the air outlet
openings.
4. The air outlet according to claim 3, wherein the cover frame is
arranged so that it seals air outlet openings laterally disposed of
the ventilation device.
5. The air outlet according to claim 4, wherein the cover frame is
arranged in a manner of a closed frame on the plate.
6. The air outlet according to claim 5, wherein the cover frame is
arranged on the side of the plate that faces the ventilation
device.
7. The air outlet according to claim 6, wherein the cover frame
comprises a chamfer, preferably a 45.degree. chamfer, arranged at
the edge facing the ventilation device.
8. The air outlet according to claim 7, wherein the plate has a
thickness less than the surrounding interior paneling, wherein the
thickness difference between the plate and interior paneling is
balanced by a spacer so that in a locked state the lower edge of
the plate is flush with the lower edge of the surrounding interior
paneling.
9. The air outlet according to claim 8, wherein the plate has a
releasable locking device by means of which it is releasably
secured to the interior paneling.
10. The air outlet according to claim 9, wherein a side of the
plate visible to a viewer has the same design as compared to the
interior paneling, so that plate does not visually differ with
respect to the design and fits seamlessly into the surrounding
interior paneling.
11. The air outlet according to claim 10, wherein the plate is
covered on the side visible to the viewer with plasterboard liner
or with a fleece, and wherein said plasterboard liner or fleece can
be primed and treated with a paint.
12. A drywall ceiling comprising a substructure of a plurality of
metal profiles, an interior paneling mounted on the metal profiles
and at least one ventilation device comprising at least one air
supply means, an air guiding device and an air outlet, wherein the
air outlet is in the installed state foldably mounted to an
interior paneling such that it can be folded out of the interior
paneling to allow for accessing a space there-behind.
13. The drywall ceiling according to claim 12, wherein the interior
paneling comprises plasterboards, in particular perforated gypsum
plasterboards.
14. The drywall ceiling according to claim 13, wherein the
perforated gypsum plasterboard has a perforation pattern, and
wherein the air outlet openings of the plate have the same pattern
as the perforation pattern of the perforated gypsum plasterboard
and extend the perforation pattern of the perforated gypsum
plasterboard.
15. The drywall ceiling according to claim 14, wherein the distance
between perforations at the transition from the perforated gypsum
plasterboard board to the air outlet openings in the plate is the
same as compared to the distance between adjacent perforations in
the perforated gypsum plasterboard.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This patent application claims priority to international
application number PCT/EP2015/000797 filed Apr. 16, 2015 titled
"AIR OUTLET FOR A VENTILATION DEVICE", which claims priority to
international application number PCT/EP2015/000036 filed Jan. 13,
2015. The subject matter of international application numbers
PCT/EP2015/000797 and PCT/EP2015/000036 are hereby incorporated by
reference in their entirety.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] Not Applicable.
INCORPORATION BY REFERENCE OF MATERIAL SUBMITTED ON A COMPACT
DISC
[0003] Not Applicable.
BACKGROUND
[0004] In the prior art, ventilation devices for the ventilation
and air conditioning of rooms are known. They serve to air
conditioning or temperature control of rooms, that is, the supply
of air, wherein the air is conditioned, i.e. heated, cooled, dried
and/or humidified.
[0005] Ventilation devices generally comprise at least an air
supply means, an air guiding device and an air outlet. The air
guiding device is used to control the direction of air streams
discharged from the ventilation device to achieve a favorable
climate of the air flow. The ventilation should be carried out
without perceptible air streams. When the air is cooled, it should
be prevented that it drops vertically downwards from an air outlet
located in the ceiling of the room and produces an unpleasantly
strong stream of cool air.
[0006] To avoid this, in case of elevated air outlets, the
out-coming air streams are distributed in their flow direction so
that they flow along the ceiling in the respective direction of the
room. The so-called Coanda effect is utilized. To achieve this in
ceiling outlets, a flat outflow of air from the ceiling outlet is
imperative.
[0007] The outflow angle of the air flow is affected by several
components of the ventilation device. The air is supplied to the
outlet means in a stream feed direction and must thereafter usually
be deflected in order to flow through an air outlet opening into
the room to be ventilated. This often occurs in a deflection and/or
impact chamber.
[0008] In order to enable a precise and flexible control of the
discharged air stream, the outlet device can be provided with
additional air guide elements. The air guide elements can be
arranged to be movable to allow the user an individual adjustment
of the direction and/or strength of the discharged air stream.
[0009] Another element of a ventilation device is the air passage.
The air passage is essentially the cover for the underlying
ventilation device. So it visibly dominates the appearance of the
ventilation device for the end user. However, this cover plate also
affects the direction and flow behavior of the discharged air. This
can be used for the air guidance. On the other hand, the design can
also be construed such that the cover plate, referred to
hereinafter as air outlet, has minimal influence on the exiting air
flow. For this reason, air outlets in the prior art often are
lattice plates, thin perforated plates or thin slit plates in
painted metal or sheet metal.
[0010] The design of the visible air outlets is substantially
determined by the function and does often is not appealing to the
viewer. Moreover, the ventilation devices with their air outlets
form foreign objects in an otherwise homogeneous overall
architectural appearance of a ceiling or a wall. There is therefore
a need for air outlets that blend into the environment in which
they are installed so that they visually interfere minimally with
the overall architectural appearance. However, the functionality of
the air passage should not be impaired, particularly when it is an
air outlet.
[0011] This problem is particularly pronounced in ventilation
devices that are inserted into suspended interior drywall panels.
Although the construction of drywall panels (i.e. gypsum
plasterboards) mounted to carrier profiles provides a space between
the wall or raw ceiling and the drywall panel. This space can be
used to accommodate the non-visible parts of the ventilation
device. The relatively large thickness of the drywall panels,
however, means that an air outlet, which is made of a thin plate
does not finish flush with the outer edge of the drywall
panels.
[0012] If drywall panels made of gypsum plasterboards are used as
drywall elements, these typically have a thickness of about 12.5
mm, while air passages known in the prior art are often only a few
millimeters thick metal plates.
[0013] Plasterboards have the advantage that they allow for other
functionalities apart from the covering and dividing of spaces.
With perforated gypsum plasterboards for example, acoustic noise
reducing rooms can be built. There exist perforated gypsum boards
with different hole or slot designs. There is a need for air
passages that adapt these designs as much as possible, so that the
overall architectural picture is not affected by it.
[0014] It is generally possible to use the holes or perforations in
the perforated gypsum plasterboards for air passage. In this way,
the air outlets would not differ from the rest of the ceiling look.
However, the relatively large thickness of the gypsum board
prevents flat angular outflow of air so that this solution provides
only insufficient comfort for the consumer. There are further
disadvantages by combining drywall constructions with ventilation
systems: Currently, ventilation systems are not part of the drywall
construction systems. This means that the ventilation device is
installed after completion of the drywall construction and often is
installed by damaging the ready build drywall construction. By
separate planning and different focuses of interest of the
manufacturer of drywall constructions on the one side and of
ventilation systems of the other side can barely meet actual
on-site requirements, such as low suspension height of the
ceiling.
[0015] Conventional ceiling passages are retrofitted in the drywall
ceiling. Since the manufacturer of drywall constructions and
ventilation systems do not understand each other respectively, the
previously known design solutions are not very appealing. As a
rule, outlet openings are made of painted sheet metal, this means
that the passages despite all the production quality are always
optically present and interfere with the design of the drywall
ceiling.
SUMMARY
[0016] This Summary is provided to introduce a selection of
disclosed concepts in a simplified form that are further described
below in the Detailed Description including the drawings provided.
This Summary is not intended to identify key features or essential
features of the claimed subject matter. Nor is this Summary
intended to be used to limit the claimed subject matter's
scope.
[0017] The claimed subject matter relates to an air outlet for a
ventilation device, the ventilation device comprising at least an
air outlet, an air supply means, and an air guiding device, wherein
the air outlet includes a plate having air outlet openings, and
wherein the air outlet is in the installed state foldably mounted
to an interior paneling such that it can be folded out of the
interior paneling to allow for accessing a space there-behind).
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In the following the invention will be explained in more
detail with reference to drawings. Like reference numerals denote
similar features throughout the drawings.
[0019] FIG. 1 shows a top view on a drywall ceiling with a
ventilation device;
[0020] FIG. 2 shows a bottom view on a drywall ceiling with a
ventilation device;
[0021] FIG. 3 shows a cross sectional view through a drywall
ceiling with a ventilation device;
[0022] FIG. 4 shows a cross sectional view through a drywall
ceiling with air outlet without a ventilation device;
[0023] FIG. 5 shows an enlarged cross sectional view of FIG. 4.
DETAILED DESCRIPTION
[0024] The invention relates to an air outlet for a ventilation
device and a drywall ceiling with an air outlet for a ventilation
device. In particular, the invention relates to an air outlet which
is integrated into an interior paneling (i.e. an interior drywall
paneling).
[0025] The object of the invention is therefore to provide an air
passage and an air outlet for ventilation devices, which allows
easy installation and easy maintenance of ventilation systems. The
air outlets are to be used particularly in drywall construction and
can be visually fit into the interior design. The problem is solved
by an air outlet with the features of claim 1 and a drywall ceiling
with the features of claim 12. Advantageous embodiments are defined
by their features normed in the dependent claims.
[0026] An air outlet for a ventilation device according to the
invention comprises a plate with a plurality of air outlet
openings, the air outlet being fixed in a manner so that when
installed in an interior paneling it is foldable out of the
interior paneling to make a space behind accessible. Apart from at
least one air outlet, the ventilation device comprises an air
supply means and an air guiding device. The construction of the air
outlet which is foldable out of the interior paneling has the
advantage that a drywall construction for the interior can be
completed with an opening for a ventilation device by a
professional (expert in building of drywalls) for drywall
constructions. Subsequently, an installation of the ventilation
device by a professional for ventilation is easily possible through
the opening in the interior paneling. The professional for
ventilation has not to initially form an appropriate opening
(usually with little professionalism) in the drywall construction,
but finds that work already done by the expert for drywall
constructions. After the installation of the ventilation device,
the opening may be releasably blinded by a customized or
standardized air outlet produced by drywall manufacturer. This
ensures a clean and straight design of the interior paneling made
from one hand, wherein site requirements can be easily met.
Additionally, at a later time maintenance of the ventilation device
can be performed by release of the air outlet via simply folding it
out from the interior paneling. An interior paneling according to
this invention is understood to mean inter alia a drywall ceiling
and/or a drywall construction wall, i.e. a separation drywall. The
phrase air passage comprises air outlets and air inlets. By air
outlets air flows out of a ventilation device into a room while
room air flows from the room into a ventilation device through air
inlets. The invention is described below by reference to air
outlets, because here, apart from the function to supply air to a
room, other functions are necessary. With air inlets this is not
the case to the same degree. Of course, the invention can therefore
also be used as air inlet.
[0027] According to a particularly preferred aspect, the plate of
the air outlet comprises a cover frame, which at least partially
covers the air outlet openings of the plate. Particularly
preferably, the cover frame is arranged so that it seals the air
outlet openings disposed laterally from the ventilation device
which are not covered by the ventilation device arranged at the
plate. In this way, the air outlet can be made larger than
necessary, e.g. greater than the ventilation device. This ensures
sufficient space for the installation of the ventilation device,
but also provides space for future maintenance.
[0028] The cover frame serves to seal the air outlet openings which
are not necessary for the ventilation against the back flow of air
into the space between the ceiling or wall and the interior
paneling. This is especially useful if an extremely flat outflow
has to be realized. An extremely flat outflow angle is an angle
between the ceiling or wall and the flow direction of the air
stream of less than 25.degree., preferably less than 15.degree..
The angle has to be sufficiently small such that the Coanda Effect
is effected, meaning that the air flow is attracted by the ceiling
and flows along the ceiling far into the room. The cover frame can
preferably be designed in the manner of a closed frame so as to
border the ventilation device on all sides. In this way, the air
outlet openings provided for the ventilation device may be, for
example, centrally arranged in the plate and are symmetrically
enclosed by the closed frame like a visor.
[0029] If the cover frame is disposed on the side of the plate
facing the ventilation device, the side of the plate visible to the
viewer can be designed freely, without the visually disturbing
cover frame. It is also possible to arrange the cover frame as a
design element on the side of the plate visible to the viewer.
[0030] If the cover frame is disposed on the side facing the
ventilation device of the plate, it may be advantageous to at least
provide the portions of the cover frame visible through the air
ventilation openings of the plate in a dark color such as black, so
that they do not visually differ from the other regions of the
perforated plate and/or the interior paneling.
[0031] The cover frame can advantageously be connected to the plate
at the edges of the plate. If the plate is provided, for example,
with a cover frame, an attachment to this frame can be easily
realized without the visible surface of the plate being visually
impaired.
[0032] According to a particularly preferred aspect of the
invention, the frame has a chamfer towards the ventilation device.
The chamfer can be a 45.degree. chamfer. The chamfer is used to
laterally align the ventilation device, the frame and the air
outlet openings of the plate. Since the plate is fixed to the frame
and is essentially non-slidable integrated into the interior
paneling, an alignment must be done by moving the ventilation
device. Since the ventilation device rests only on support beams of
the interior paneling and is not fixed any further, such a
displacement is possible without any effort.
[0033] The outer edges of the ventilation device are seated on the
plate of the air outlet. It is optically advantageous, if the edges
of the ventilation device are seated on web portions of the plate
without or at least with only with a minimum overlap with the
air-outlet openings. For this purpose, an alignment of the
ventilation device to the plate is necessary. If the outer edges of
the ventilation device overlap with air-outlet openings visibility
from below is not ruled out.
[0034] Now, if the ventilation device comprises a chamfer at the
contact edges which are in contact to the chamfer of the cover
frame, an easy alignment of the ventilation device relative to the
cover frame is possible via the mutually complementary sliding
chamfer edges.
[0035] The cover frame can be made from different materials, such
as wood, aluminum, sheet steel, or plastic. Further, the cover
frame may be of a solid material or be also a one piece
profile/Preferably, a U-shaped sheet steel profile is used. In
order to enable a simple, stable and durable attachment of the air
outlet in the interior paneling, the air outlet can be equipped
with a mounting frame device. The mounting frame device is
preferably in two parts and includes an outer mounting frame and an
inner mounting frame. The outer mounting frame is secured to the
interior paneling and the inner mounting frame is fixed to the
plate of the air outlet. Preferably, both mounting frames
respectively are formed circumferentially and include at least
partly the edges of the plate or the opening in the interior
paneling.
[0036] The plate of the air outlet may have a lower thickness than
the elements (drywall panels) of the interior (drywall) paneling.
The thickness difference can be compensated by a spacer so that the
bottom edge of the plate in a locked state is flush with the lower
edge of the surrounding interior paneling. Thus, a uniform mounting
on common or different but identical support elements is
possible.
[0037] Such a flush installation of the visible surface of the
interior paneling can nevertheless be achieved when different
materials in different thicknesses are used. As an example, gypsum
boards with a thickness of 12.5 mm for the interior paneling may be
mentioned, which can be combined with a 1.5 mm thick plate to
optimize the air outlet, without a ledge being created on the
visible side or complicated assembly adjustments must be made.
[0038] The thickness of the plate of the air outlet can also be
adjusted via the thickness of the cover frame to the thickness of
the interior paneling, as the cover frame is preferably secured to
the inner mounting frame of the mounting device. The thickness of
the plate of the air outlet is preferably less than 3 mm,
particularly preferably less than 2 mm and in particular less than
or equal to 1.5 mm. A small thickness of the plate has only a
minimal effect on the air guidance. Depending on the material used
for the plate and the dimensions of the plate, different
thicknesses of the plate are necessary for a sufficient stability.
The plate should be made as thin as possible.
[0039] To be able to fold out the air outlet from the interior
paneling, the use of a hinge or hinge system is provided.
Preferably, hinges or hinge joint components can be arranged on the
plate of the air outlet. For example, opposite small bolts can be
provided that can be rotatably supported in pans in the interior
paneling so that the plate can be rotated or pivoted about an
axis.
[0040] In addition, the plate advantageously comprises at least
parts of a releasable locking device by which it can be detachably
fixed to the interior paneling. Particularly preferred is a locking
means which is released by pressure on the plate (i.e. particular
portions of the plate) of the air outlet and which is based for
example on a spring system. Such locking systems based on springs
are especially preferred because they do not optically impair the
visible side of the interior paneling including the air outlet.
Basically, other locking systems can also be used, for example
electronically controlled devices. In order to achieve a
homogeneous or uniform visual appearance to an interior paneling,
the plate can have the same design as the interior paneling that is
visible to a viewer so that the plate is visually indistinguishable
from the surrounding interior paneling and seamlessly fits into
this surrounding with respect to the designs and also the materials
preferably used. This can for example be achieved by covering the
visible side with gypsum plasterboard cardboard or with a lining,
analogous to the surface, for example of gypsum plasterboards. The
plasterboard liner or the lining can then be further treated in the
same manner as the elements of the interior panel, for example, as
the gypsum plasterboards. They can, for example, be coated with a
primer and with an interior paint, preferably by roller
application.
[0041] In addition to the air outlet for a ventilation device, the
invention also relates to a drywall ceiling comprising a supporting
structure of a plurality of metal profiles, an interior paneling
mounted on the metal profiles, and at least one ventilation device
comprising at least one air supply, an air guiding device and an
air outlet. The air outlet comprises a plate with air outlet
openings. The air outlet is mounted such that, in the installed
state in an interior paneling, it is foldable out, of the interior
paneling to make accessible a space behind. More preferably, the
interior paneling is made of gypsum plasterboards, especially of
perforated gypsum plasterboards, so-called acoustic panels.
Perforated gypsum plasterboards are widely used as building
material for sound absorption and are particularly interesting
because they already have a perforation pattern. The perforation
pattern of the plate of the air outlet can be adapted to the
perforation pattern in the perforated gypsum panels, so that the
pattern visually continues without perceptible interruption, i.e.
with respect to size, spacing and/or material. The air outlet
openings of the plate of the air outlet then have the same design
as the perforation pattern of the perforated gypsum plaster panels
and extend this pattern further. They can, for example, be round or
square, and arranged in a regular or irregular pattern. This means
that the pattern continues without interruptions (except for
unavoidable structural interruptions) with the same distance
between adjacent holes at the transition from the perforated gypsum
plasterboard to the air outlet openings in the plate of the air
outlet. The distance between adjacent holes in the plate and
adjacent perforations in the perforated plasterboard and the plate
is the same. In other words, this means that the distance of the
center point of the last opening in front of the edge rim to the
edge rim of the plate is half as large as the distance between the
center points of adjacent openings of the perforation pattern. If
the perforations of the gypsum plasterboard and the openings of the
plate are arranged side by side/a uniform spacing results.
[0042] FIG. 1 illustrates the construction of an embodiment of a
drywall ceiling 1 according to the invention with a built-in
ventilation device in a top view, looking from the ceiling towards
the floor. The drywall ceiling 1 is mounted in the manner of a
suspended ceiling. A plurality of base profiles 41 are attached to
the raw ceiling. At right angles to these base profiles 41 carrier
profiles 42 are mounted on the base profiles 41, which in turn
constitute the framework to which the building panels 2, here
perforated gypsum plasterboards 2, are mounted. The perforated
gypsum plasterboards are covered from above with a lining, in this
case a black fleece laid on top thereof. For this reason, in the
plan view of FIG. 1, the holes 21 of the perforated gypsum
plasterboard 2 are not visible. The perforated gypsum plasterboard
2 has an opening (not shown) through which the ventilation device 8
was inserted. In this example the ventilation device 8 comprises a
diffuser. The diffuser 8 is equipped with beams 6 and has support
on two supporting profiles 42. It can be moved freely on the
support profiles 42 and is not fixed any further. The opening of
the perforated gypsum board 2 is sealed with an air outlet 3. In
FIG. 1, only the outer edges of the air outlet 3 can be seen
because the diffuser 8 covers the central part of the air outlet 3.
The air outlet 3 has a plate with air openings, in this case a
600.times.600 mm large, 1.5 mm thick perforated plate 12 (not
shown), that is circumferentially surrounded at its edges by an
inner mounting frame 20. The inner mounting frame is an aluminum
profile.
[0043] To the inner mounting frame 20 hinges 22 are mounted by
means of which the air outlet 3 can be folded out around a common
axis from the drywall ceiling. At the edges, arranged opposite with
respect to the joints 22, a spring mechanism 24 is arranged, which
fixes the air outlet 3 in the opening of the perforated gypsum
plasterboard 2. The locking mechanism can be released by pressing
the underside of the air outlet 3. To avoid a sudden falling out of
the air outlet 3 from the opening of the perforated gypsum
plasterboard 2, a catching hook 28 is also provided therein, which
holds the air outlet 3 after its release in a semi-open
position.
[0044] FIG. 2 shows the same section of a drywall ceiling 1 as
shown in FIG. 1, but this time in the bottom view, i.e. from the
perspective of an observer looking from floor to ceiling. In this
view, the perforation 21 of the perforated gypsum plasterboard 2
with the black fleece is visible (black squares). It will also be
appreciated that in the perforated plate 12 the air outlet 3 does
not optically differ from the perforated gypsum plasterboard 2 into
which it is fitted. Simply due to their construction the abutting
edges of the perforations in the perforated gypsum plasterboard 2
and the air outlet opening 3 of the plate are to be recognized. In
order to achieve the visual unity between perforated gypsum
plasterboard 2 and the holes in the plate 12, the plate 12 with the
openings was covered (glued) on the visible side with a
plasterboard liner, comprising corresponding openings to the
openings in the plate 12. The plasterboard liner of the plate 12
was then primed and painted with, the same paint as the surrounding
perforated gypsum plasterboard.
[0045] Thus, the surfaces of the visible sides of the perforated
gypsum plasterboard 2 and the plate with openings 12 are of the
same material (gypsum plasterboard liner), which was further
treated in the same manner (primer, paint). The pattern of the
perforated gypsum plasterboard 2 and of the plate with openings 2
is identical in shape, size and spacing. The pattern is continuous
as well as consistent. The designs of the perforated gypsum
plasterboard and of the air outlet do not differ in any way.
[0046] FIG. 3 shows a cross sectional view of the drywall ceiling
1. In this representation, the arrangement of the ventilation
device 8 with the air supply 10 on the plate with openings 12 of
the air outlet 3 is depicted. At the side facing away from the
viewer of the dry ceiling, a cover frame 14 is arranged in a manner
surrounding the air outlet openings 13 of the plate 12. The frame
is painted black on its underside pointing to the viewer (not
shown) such that it is not visually different from the black fleece
applied to the perforated gypsum plasterboard when seen through the
plate openings 12. The cover frame 14 is made of a sheet steel
profile and has the outer dimensions of 598.times.598, a frame
width of 45 mm and a thickness of 12 mm.
[0047] The cover frame 14 is fixed to the inner mounting frame 20
of the mounting frame device 18, 20 and laterally seals the air
outlet openings of the air outlet. The peripheral inner edge of the
cover frame 14 pointing to the diffuser has a 45.degree. chamfer.
Form-locking thereto, the diffuser 8 has on its lower edge a
peripheral chamfered portion 16 which is formed in this embodiment
by an angle plate mounted at the lower edge of the diffuser 8. Via
the mating 45.degree. chamfers of the cover frame 14 and the
diffuser 8, the diffuser 8 can be aligned on the support profiles
42 matching the air outlet 3 by simply moving the beams 6.
[0048] In FIG. 4 the same drywall ceiling 1 is shown in
cross-section for better clarity again, but this time without a
built-in ventilation device. The air outlet 3 is in the locked
state. FIG. 5 shows an enlarged view of FIG. 4. In this expansion,
the arrangement of the mounting frame device which comprises the
outer mounting frame 18 and inner mounting frame 20, is clearly
visible. Both, the outer mounting frame 18 and the inner mounting
frame 20, are composed of a circumferential running aluminum
profile. By means of the inner frame 20, the cover frame 14 is
fixed to the plate with openings 12. The cover frame 14 compensates
for the difference in thickness between the perforated gypsum
plasterboard 2 and the plate with the openings 12 so that the
elements "perforated gypsum plasterboard" 2 and "air outlet" 3 are
equally thick.
[0049] The distance a between adjacent perforations 21 in the
perforated gypsum plasterboard is the same size as the distance b
between openings 21 at the transition from the perforated gypsum
plasterboard 2 to the air outlet openings 13 in the perforated
plate 12. The dashed lines indicate the position of the cylinder
axes of the holes in the perforated gypsum plasterboard or the air
outlet openings 13 in the perforated plate.
REFERENCE NUMERAL LIST
[0050] 1 drywall ceiling [0051] 2 building panel [0052] 21
perforation in the building panel [0053] 3 air outlet [0054] 41
base profile [0055] 42 carrier profile [0056] 6 beam to support
ventilation device [0057] 8 ventilation device (diffusor) [0058] 10
air supply [0059] 12 metal sheet with openings [0060] 13 air outlet
openings [0061] 14 cover frame [0062] 16 chamfered section of the
ventilation device [0063] 18 outer mounting frame [0064] 20 inner
mounting frame [0065] 22 hinge [0066] 24 spring mechanism [0067] 26
spacer [0068] 28 catching hook
* * * * *