Note: Descriptions are shown in the official language in which they were submitted.
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The present invention relates to a window
comprising a frame, an outer glazed sash and an inner
glazed sash, and a channel for fresh air and/or cir-
culating air, the room-side window pane preferably
being made as an electric heating element and an
outer pane surface is provided with a coating in
order to reflect back heat radiation coming outward
from the heating element-.~
The object is to provide a new window func-
tioning as an air circulation and heating means in aroom and the installation of which is convenient.
In accordance with a particular embodiment
of the invention there is provided a window compris-
ing a frame, said window being mounted in a wall in a
room, a plurality of glazed sashes, each glazed sash
including a window pane, said glazed sashes compris-
ing an outer glazed sash, an inner, room-side glazed
sash, including a room-side window pane, and an
intermediate glazed sash, and at least one air
channel, said inner glazed sash and said intermediate
glazed sash being connected together so as to form a
combined assembly capable of installation in the
frame as a unit, said assembly including an electric
heating element provided on said room-side window
pane of said assembly, there being provided a
reflective layer upon a pane surface of the window
assembly, which surface is situated outwardly of said
heating element to reflect back in a room-side
direction heat radiation coming outward from the
heating element.
Numerous advantages are achieved by the
invention. The apparatus combination formed by the
inner glazed sash and the middle glazed sash, can
handle heating and filtration of incoming air and it
further comprises the electrical equipment of the
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inner window pane which pane functions as a heating
element, whereby a window may be used with a conven-
tional, existing frame and outer glazed sash, the
installation can be carried out by a carpenter with-
out special training. The inner glazed sash profile
functioning as an air channel promotes the heating of
fresh air and the muffling of noise, it is not neces-
sary to lead circulation--air into the space between
the windows, instead it can be mixed with fresh air
inside the glazed sash profile.
The air stream is directed along the
surface of the heated pane, whereby the temperature
of the fresh air rises. From the point of view of
air circulating and heating it is advantageous to
direct the stream of air upward into the room. If
wished, it is easy to change the stream of air to be
blown from the side and~or from up downward. A
blower may be placed in the upper part of the inner
glazed sash, where it is protected, for example, from
washing water. The blower does not need a glazed
sash of its own, in addition, for example, a filter
cloth, a one-way valve, regulating means and needed
electric wirings may be installed in the glazed sash
profile.
The middle glazed sash forms a lid for the
filter and the blower, whereby the filter can be
easily checked and changed only by opening the middle
glazed sash. The profile of the inner glazed sash is
preferably in two parts, which makes it easy to
install the wirings and operating devices.
In the following the invention will be
described with reference to the enclosed drawing, the
Figures 1 and 2 of which show vertical sections
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of a window according to the invention; the embodi-
ments differ from each other only for the part of the
inner pane functioning as a heating element.
The window according to the invention
comprises a frame 1 and an outer glazed sash 2 of
normal structure. An esssential novelty is a unit
formed by an inner glazed sash 3 and a middle glazed
sash 4, which unit preferably comprises, for example,
a blower 5 and a filter 6.
Fresh air flows preferably from the upper
portion of the outer glazed sash, arrow 7, into the
space between the outer glazed sash and the middle
glazed sash and into the lower portion 10 of the
window through the filter 6 installed between the
inner glazed sash 3 and the middle glazed sash 4,
arrow 11. In case the locations 9 and 15 of the
sealings 8 would change place the filter 6 would
correspondingly be in the upper portion of the
window, whereby fresh air would advantageously be let
in at the lower portion.
Openings 12 are formed in the inner glazed
sash 3, through which openings air flows upward along
the warmed up surface 13 of the pane and forward via
the space 14 into the blower 5, at the location of
which the sealing 8 is at location 15, whereby air is
allowed into the blower only from the middle space 16
where it has been warmed up.
From the blower 5 the air flows inside the
glazed sash, for example, to its lower edge 17, from
where it is directed through a slot 18 upward along
the surface of the heated pane, arrow 19. A sealing
20 is arranged in the slot 18 which sealing to its
configuration interacts with the edges 21 and 22 of
the profile in such a way that it can either shut the
slot or open it, when it is bended into the space 23.
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The room-side window pane 24 comprises an
electric resistance known per se, whereby the pane
may function as an effective heating element and the
pane (surface) 13 next to it in the outward direction
S reflects heat radiation preferably selectively.
In the inner glazed sash, preferably in
connection with the filter 6, it is possible to
install an easily moving-flap 26 which keeps the
connection between the filter 6 and the openings 12
clear when air is flowing inward, but closes the
connection if the direction of the stream of air for
some reason changes to the opposite.
The middle glazed sash 4 covering the
filter cloth and the aspirating opening of the blower
is hinged from its side to the inner glazed sash 3
preferably in such a way that when opening it the
filter and a blower wing will show, whereby it is
easy to reach them.
At the point of the blower 5 there is an
opening in the inner glazed sash profile for the air
stream, and for mixing the inner air or circulation
air 28 with the incoming air there is correspondingly
an opening 29 and a by-flow opening 31 at the point
of the sealing 30 in the profile. The inner surfaces
32 of the inner glazed sash profile 3 may be provided
with a sound dampening material.
The heating pane at the room-side may be,
according to Figure 1, a single pane or alter-
natively, according to Figure 2, a vacuum pane
structure 33, whereby the air flow occurs from the
outside 16, 34 of a pane 13 provided with a surface
reflecting heat radiation selectively.
Alternatively, the surface reflecting heat
radiation may be provided in the middle pane or in
the outermost pane, both in Figure 1 and in Figure 2.
