Note: Descriptions are shown in the official language in which they were submitted.
The present invention relates to a venilating
apparatus for lnstallation on or i.n a ventilating opening in
a wall or a window frame or door frame, with a sound absorbant
housing in each case with at least one air-intake ~nd one
air exhaust opening and with a housing cover.
The sound absorbant material of a ventilating apparatus
that has already been proposed, and which at the same time
gives its shape to the vent;.lati.ng duct, has, primaril~, the
function of preventing or at least reducing the penetration
10 of noises along with the air. The exterior of the insulati.ng
housing is made of aluminium or the like and it thus
constitutes a means of heat conduction between the room to be
ventilated and the atmosphere which, at least in the cold
season, is at a lower temperature.
The present invention improves the above ventilating
apparatus so that it ~revents both the flow of energy from
the relatively warmer interior to the cold exterior as well
as the penetration of noises along with the incoming air.
According to the present invention there is provided
20 a ventilating apparatus for installation on or in the ventilating
slot of a wall or the frame of a window or door, comprising
a housing having a back wall accommodating an air intake,
side walls insulated from the back wall by a heat insulating
element interposed therebetween and an air exhaust at the front
of the housing provided with a cover,and sound absorbant
material in said housing through which is formed an air duct
extending in a meandering path from said air intake to said
air exhaust, the walls of said duct being arranged such that
opposed surfaces thereof are generally of sound absorbant
3~ material and sound conductive material respectively.
In the ventilating apparatus of the present invention
both insulating elements interrupt the flow of energ~ in the
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desired manner to the cold back wall adjacent to the atmosphere
from the rest of the housing and its cover within the interior
space. Owing to the interruption of these cold bridges, the
interior parts of the housing do not cool, or at least cool much
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less than in the previously proposed ventilatiny apparatus.
Consequently, this ventilating apparatus meets the requirements
of the recent Energy Conservation Act. Moreover, the insulating
elements also inhibit the transmission of sound from the back
wall of the housing to its other parts, and thus a further in-
crease in the sound insulation properties is attained. At the
same time, however, the passage of air, advantageously, remains
optimum, and from the standpoint of size, which basically should
; be as small as possible, there is no detrimental change. There
are practically no disadvantages, either, from the standpoint of
cost. However the struc-ture of the housing, through the use of
a separate back wall, permits -the latter, and if necessary both
the upper and the lower wall of the housing, to be designed to
meet the particular requirements, and thus a kind of system of
production from prefabricated parts becomes possible. Any kind
of housing adjuncts may be necessary, or may be awkward, depending 'J
on whether the ventilating apparatus is to be built on or incor~
porated. However, if one has a choice between different back
' and other walls, which can be combined arbitrarily, then, : -
` 20 depending on the requirements, an optimum ventilating apparatus
can be provided for a particular case. !
In an especially preferred embodiment of the invention
l~
` the insulating ~ni* is installed between two mutually facing
! retaining rails of the back wall, especially rails of U-cross-
section, on the one hand and the upper or lower wall of the
housing, on the other. In this case insulation in the form of
strips is used and these are safely retained by the retaining
rails transversely to the longitudinal axis of the rails. In the
longitudinal direction of the rails the insulating units may be
retained by joining devices with which the back wall is joined on
the one hand to the upper wall of the housing and on the other to
the lower wall of the housing. These joining devices may be
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rivets or threaded bolts. Alternatively, or additionally, ad~
hesive bonding means can be provided.
A further modi~ication of ~he present inv~ntion provides
that the cover is hinged on the side adjacent to the lower wall
of the housing and can be locked on i~ts opposi~e side by at least
one locking unit. The cover can be opened up, or the purpose of
cleaning, by 180 for example, so that the interior of the venti-
lating device is effectively accessibLe. This is due primarily
to the fact that part of the insula-ting unit forming the ventila~
ting duct is solidly joined to the cover and thus can be swung
out to expose the interior of the duct. The locking units are
expediently of simple construckion, so that they do not entail
high costs and their operation is not difficult. Snap locking
or latching devices are sufficient. A preferred embodiment of
the invention does indeed provide that every locking element be
desiyned as a bolting device that is rotatable about its longi-
tudinal axis and which co-acts with a retaining member mounted
on the upper wall of the housing, especially a retaining bar.
In the locked position the bolting device engages behind the bar.
A single retaining bar extending over the entire apparatus can
be used, or short retaining bars situated only in the vicinity
of each locking device. This embodiment has advantages from the
standpoint of manufacturing technology, especially if extruded
or otherwise produced profiles are being used for the insulating
housing or its external part. The bolting devices are made to
resemble cams, and can be operated, for example, with the aid of
a screw driver. They are mounted in the cover.
A further embodiment of the invention provides that
the two lateral ends of the ventilating duct are each closed by
a cover plate, the cover plates being secured in plug-in fashion
to the external part of the housing. The latter must possess
suitable sockets for plugs and/or half-plug couplings. For plug-
311L~6~6
:in connection a friction lock is adequate, bu-t a ~orm lock can b~3
provided alternatively or additionally. In order to prevent the
cover plates from actiny as a bridge between parts of tha insu-
la-ting housing separated from each other by layers of insulation,
an insulating layer is very advantageously situated between the
external part of the housing and each cover plate~ This may
consist, for example, of insulating sheets.
Another embodiment of the invention provides for the
back wall to possess, so as to provide weather protection, at
least one weather-shielding strip but preferably one on either
side, over the air intake, covering it at a distance, and haviny
angular or arch-shape. Weather-shielding strips prevent the
penetration or rain and splash water and also the direct penetra
tion of gusts of wind into the air-intake or intakes. Preferably
the weather-shielding strips are made integral with the back wall ;~
or with the external part of the back wall.
Another embodiment of the invention is that on the
lower housing wall, at least, especially near the back wall, a
glass-retaining strip is provided, preferably moulded on. This
permits direct application of the ventilating device to a glass
pane, especially an insulating ylass pane.
Another embodiment of the invention is that the cover
is hinged to the housing by an outer bearing at each end and at
least one bearing in between them. If a single continuous swivel
bearing is not used, the use of one central, or several additional
bearings between the outer ones is found to be an advantage,
especially with elongated ventilators. The number of these
bearings will then depend more or less on the number of locking
units. Not only do they ensure smooth opening and closing o~
3~ the cover, but also a good fit on the housing.
Preferably each bearing comprises a shackle joined to
the housing and a hinge pin secured to the cover and which extends
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past the shackle, in par-ticular at both ends. The two units give
no problem, comparatively speaking, in respect to fastening. '
Thus, in a further modification of the invention the hinge pins
are lodged in a trough or groove running in -their longitudinal
direction and be retained there, especiall~ by peening over.
For peening over, the side edges of the grooves, especially at
oppositely disposed places, can each be deformed at least once
permanently to ei-ther side of the shackle, the groove thus being
constricted externally at this point. However, the shackles may
advantageously posses a rivet lug for securing to the external
part of the housing. Any other type of fastening is also possible
but riveting is a method that is comparatively easy to execute ~ ;
and provides a secure ~oint.
Another embodiment of the invention provides that the
external part of the housing, on its surfaces which are towards p
the wall or the frame, is provided with a layer of insulation so
that any heat transfer between the ventilator and the frame or
wall is prevented or at least reduced.
The present invention will be further illustrated by
way of the accompanying drawings in which:
Figure 1 is a front elevation of a ventilator according
to one embodiment of the present invention;
Figure 2 is a section through the line II-II of Figure L
1, with the ventilator open;
Figure 3 is a representation of another embodiment in
accordance with Figure 2, with the ventilator closed;
Figure 4 is an enlargement of a detail in the left
upper corner~of~igures 2 and 3;
Figure 5 is a section through the line V-V of Figure ~
1, in enlarged scale, with the cover open; ;-
Figure 6 is a section through the line VI-VI of Figure
1, also in enlarged scale;
Figure 7 is a view of Figure 6 looking in the
direction of arrow A;
Figure 8 is a section through -the left lower corner of
Figure 1, in enlarged scale;
E'igure 9 is a front elevation of Figure S;
Figure 10 is an ernbodiment similar to -the ventilator of
Figure 2, showi.ng the ventilator installed;
Figure 11 is the embodiment of the ventilator according
to Figure 3, showing the ventilator installed.
The ventilator 1 can be installed wholly or partlally
in a ventilation opening 2 of a wall or a frame 3, especially
a blind frame, or can be mounted preferably on the interior side
in front of such a ventilation. opening 2. The ventilation opening
as shown in Figure 11, may also consist of a frame cross-beam 4,
especially an upper cross-beam, and the end of a glass pane 5
running parallel thereto.
The ventilator has a sound-absorbant housing 6 and a
cover 7 rotatably hinged thereto. The latter consists essentially
of a so-called "ventilator slide" 8 with a fixed frame 9 and slide
10, the slots and cross-pieces of which form the pattern similar
to the ventilatingslots 11 of frame 9 seen in Figure 1.
The sound-absorbant housing, as its name suggests,
deadens the external noise so that no more than a remnant of it,
which is no longer disturbing, can penetrate the room to be
ventilated. This is achieved on the one hand by the use of the
sound-absorbant material and on the other by means of a special .
design of ventilating duct 12. This applies in both to its
shape and its constitution. As shown in Figure 3, for example,
the ventilati.ng duct has an approximately Z-shaped cross-section, ~-
the end 13 towards the interior side flaring in the shape of
a wedge in order to fit it to the slots of the ventilating slide.
Moreover, the walls of the ventilating duct are made of both
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sound-conducting and sound-absorbant material. This does not
mean, oE course, tha-t for example one side consists of sound-
conducting material and the other of sound-absorbant material,
but rather separate segments of one duct wall are always made of
sound-conducting ma~erial and the opposing segment is then of
sound-absorbant material. For reasons of manufacturing tech~
nology, andpartially also for reasons of strength, it is not
always possible to avoid having short seymen-ts consist on both
sldes of sound-conducting or on both sides of sound-deading
material. For the final result, however, this is oE no great
importance.
According to the invention, sound-absorbant housing 6
possesses a back wall 14 on which air intake 15 is located. It
also possesses an upper housing wall 16 and a lower housing wall
17. Between back wall 14 and upper housing wall 16, on the one
hand, and between back wall 14 and lower housing wall 17 on -the
other hand, there is in each case a strip of insulation 18 and
19. This prevents the flow of energy, i.e. a cold bridge, from
the cold e~terior, namely back wall 14, to the part of -the venti-
lator (Figure 4) situated in the interior. Insulating units18, 19 are situated especially between two retaining rails 20,
21, of U-shaped cross-section, retaining rail 20 being molded
onto the back wall 14 and retaining rail 21 being molded onto
the upper housing wall 16. The same applies to insulatlng unit
19 . .',
In the section perpendicular to wall or frame 3, in- ~;
sulating housing 16 is rectangular, or possibly square in cross-
section. Its outer wall 22 is made of aluminium. Preferably
extruded profiles are used for the individual parts of the outer
wall of the insulating housing and the cover or the ventilating
slide. Thus the ventilator can be manufactured in any length,
within customary limits.
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To form -~he ventilating duc-t 12, a first flat :insula-
ting slab 23 is applied to the upper ho~lslng wall 16. At its
cover end, where its edge is sloped, especially at about 45,
a second flat insulating slab 24 is applied wllich is joined to
cover 7 and runs at an acute angle thereto, more or less i.n the
direction of a diagonal of the housing. Since the two end edges
of the first flat insulati27g slab 23 are covered by strips of
aluminium, the second insulating slab does not come directly
into contact with the first one. The longitudinal edge on the
right in Flgure 2 of the first insula-ting slab 23 is covered by
a sloping strip 25 which is produced in one piece wi-th the part
of the ventilator exterior belonging to the upper housing wall.
The left longi-tudinal edge is covered partially by retaining
rail 21 and partially by back wall 14. The same holds for the
second insulating slab 24, which on the room side is enclosed by
an aluminium strip 26, the cross-sectional shape of which can be
that represented, for example~ in Figure 2. The longitudinal
edges of an insulating profile 27, which is U- or C-shaped in
cross-section, are encased by aluminium strips 28 or 29, as the
case may be, the cross-sectional shapes of which can again be
determined from Figure 2, or other figures of the drawi-ngs.
They are produced integrally with the back wall, or
the lower housing wall, or their aluminium external parts. Thus,
sound-conduc-ting surfaces are produced whe~ever:. the sound-
absorbant slabs or profiles are covered with aluminium, whereas
the exposed surfaces are sound-absorbant. The second flat ~
insulating slab extends, with approximately equal interval all ~ ;
around, between the legs 30 and 31 of insulating profile 27.
Because insulating slab 24 is securely fastened to cover 8, the
interior of insulating housing 6 is automatically accessible for
cleaning when the cover is opened.
The second flat slab 24 does not extend quite as far
as the cover end of upper housing wall 16, so that
a continuous hollow cavity 32 is formed. This serves to accom-
modate locking parts 33 which co-act with a retaininy bar 34
(Figure 6) which is integral with the profile of the upper
housing wall 16. In the locked position the locking parts engage
behind retaining bar 34. The locking parts are rotatable about
~heir longitudinal axis 35. For this purpose the outer end of
the locking elements 36, desi.gned as bolting parts, are given
the form of the head of a screw 37.
Both lateral ends of ventilating duct 12 are closed
by a cover plate 38 or 39, as the case may be. These are prefer-
ably secured in plug-in fashion to -the exterior 22 of the housing. ,~
Between each cover 38, or 39, as the case may be and external ~ ,
wall 22 of the housing there is an insulating layer 40. It is
retained by prongs 41 which are rive~ed to cover plate 38 or 39,
as the c2se may be. They fit tightly into matching holes 42,
. especially blind holes, in external part 22.
The back wal.l 14 of the r~s~rt~d housing has a weather-
protecting strip 43, or 44, especially, once more integrally ~~:
moulded on strips, mounted one above and one below air intake
15, to provide protect1on against the weather. They are of the ~,-
same dimensions and are angular in cross-section. One arm of
~lap~
the angle ~-=~ep~d gently downwards while the other, free arm
acts as a drip.
So that the ventilator can be mounted directly on a
glass pane, especially an insulating glass pane, or on a wall of ~.
corresponding thickness, lower housing wall 17, especially near :
back wall 14, possesses a so-called glass-retaining strip 45
which is of U-shaped profile in its cross-section. The outside ~ ;
leg of the U, 46, is integral with the external wall of the back
wall of the housing and the inside leg of the U, 47 is integral
with the external wall of lower housing wall 17.
Cover 7 is hinged to the housing in two outside bearings
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48 and 49 and at least one centrally placed beari.ng 50. Each
bearing comp.rises a shackle 51 joined to the housing and a bear-
ing pin 52 retained on the cover. The shackle possesses a ~ivet
attachment 53 which passes through a matching hole in the exter-
nal wall of lower housing wall 17. Hinge pin 52, which extends
through the bore of the bearing shackle, overlaps the latter at
~oth ends. It is lodged.ina trough or groove 54 of the cover or
of ventilating slide frame 9, running .in the longitudinal direc-
tion of pin 52, and is retained there by being peened over. I
Figure 9 shows that each bearing pin 52 is peened over in four L
places.
Figures 10 and 11 show that insulating housing 6, or
external housing part 22, at least on its surfaces which are
towards the wall or the frame, can be furnished with an insula-
ting layer 55 or with separate insulating strips so as to get a
heat-insulating effect relative to the wall or frame, as well.
A masking or edging angle bracket 56 can also be applied.
The heat and sound insulating effect of the ventilator
of the present invention is extraordinarily good. At the same
time, an optimum air passage, for comparatively small dimensions,
is obtained. The manufacturing and installation costs are also
low. ~loreover, as the examples of embodiment have shown, the
ventilator can easily be adapted to the particular circumstances, ¦~
for example to a glass pane or the ventilating slot o~ a ~rame
or wall.
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