FI96442B - Fresh air valve - Google Patents

Description

5 96442

Open-air valve

The invention relates to an outdoor air valve according to the preamble of claim 1.

In renovation construction, the windows of the entire building are often renewed. Renovation often involves the installation of mechanical deaeration. New windows are usually clearly denser than old windows and for this reason alone there is a need to install new outdoor air valves. The installation of a new outdoor air valve 10 requires an additional hole to be made in the external walls. This is an expensive and time consuming operation. In addition, the existing valves lead to both noise and fine dust in the apartment. In addition, the valves cause a feeling of traction even when mechanical ventilation is not in operation.

15 Window solutions are also known in which replacement air is introduced into the apartment via ducts within the window. In these solutions, replacement air travels in the space between the windows, which results in several disadvantages. Replacement air always contains contaminants that contaminate the window frames and window surfaces. Also, the moisture contained in the air will frost the window surfaces and rot the framework if 20 of these are wood. The problem of traction has not been solved in this structure either.

Valves attached to window frames require on-site work to install airflow openings. The problem of traction has not been solved in this structure either.

The object of the present invention is to obviate the drawbacks of the technique described above and to provide a completely new type of outdoor air valve.

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The invention is based on the fact that the outdoor air valve is placed inside the window frame 30 (frame) inside the glass frames (frames) so that the outdoor air valve is provided with an air lock placed between the windows and the valve is a closed structure with respect to the window space.

96442 2 More specifically, the outdoor air valve according to the invention is characterized by what is set forth in the characterizing part of claim 1.

The invention provides considerable advantages.

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The outdoor air valve according to the invention forms a pleated structure which effectively attenuates sound. The valve structure closed from the space between the windows does not dirt or wet the window surfaces. An airlock with a filter prevents both draft and contaminants from entering the apartment. In the wall of the renovation-10 sa need not make a hole for the valve on the construction site. The valve is pre-installed at the window factory, which reduces the work steps on site. If the windows are not replaced, the valve according to the invention can also be retrofitted to the window frames, thus avoiding the awkward making of holes in the walls. The valve is also not tied to one type of window, but is well suited for a variety of window structures.

The invention will now be examined in more detail with the aid of exemplary embodiments according to the accompanying figures.

Figure 1 shows a cross-sectional side view of an outdoor air valve according to the invention.

Figure 2 shows a cross-sectional side view of another outdoor air valve according to the invention.

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Figure 3 shows a cross-sectional side view of a third outdoor air valve according to the invention.

Figure 4 shows a cross-sectional side view of a fourth outdoor air valve 30 according to the invention.

Figure 5 shows a cross-sectional side view of a fifth outdoor air valve li 96442 3 according to the invention.

Figure 6 shows a cross-sectional side view of a sixth outdoor air valve according to the invention.

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The following reference numerals will be used in connection with all figures: window frame 1 inner glass frame 2 10 outer glass frame 3 inlet nozzle 4 air lock 5 outlet nozzle 6 inner seal 7 15 outer seal 8 air lock bottom 9 flow controller 10 filter 11 window spacing 12 20

Figures 1-6 show alternative solutions of an outdoor air valve according to the invention placed in different frames. Each figure shows a cross section of the upper edge of the frame.

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According to Figure 1, the outdoor air valve is located inside the window frame 1 and within the frames 2 and 3 on the lower surface of the upper edge of the frame 1. Attached to the outer glass frame 3 is an inlet nozzle 4, the outer part of which opens downwards to prevent rainwater and dirt from entering the valve. An airlock 5, 30 is attached to the frame 2 of the inner glass, which, thanks to the outer seal 8, forms a closed channel from the space 12 between the windows. The airlock 5 forms a pleated duct with a filter 11 at the bottom. If mechanical deaeration is not used, the 96442 4 cold air coming from the inlet nozzle 4 descends to the filter 11 at the bottom of the air lock 5 and does not flow forward until it has warmed up. Heating is promoted by a metal airlock base 9, which efficiently transfers the space 12 between the windows to the air in the heat filter 11. The heated air is transferred to an outlet nozzle 6, the flow controller 5 of which directs the air in the desired direction or closes the flow completely. Thanks to the air lock 5, the flow of such cold outdoor air to the apartment does not take place when the ventilation is switched off. The inner seals 7 ensure the tightness of the airlock 5 on the side of the inner glass frame 3. The filter 11 and the air lock 5 act as effective silencers against traffic noise.

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The structures of both the nozzles 4 and 6 and the air lock 5 are plastic except for the air lock base 9. The air lock base 9 must be removed for replacement of the filter 11.

15 When the windows are opened, the air lock 5 moves with the inner glass frame 2 and the inlet nozzle 4 with the outer glass frame 3, respectively. This results in easy replacement of the filter 11.

The height of the valve channel is typically 10-20 mm on average. The valves are 20 typically 300 mm wide units that are installed in the window whenever needed.

The valve units are horizontally uniform channels for the inlet nozzle 4 and the filter 5 and are divided into independent channels in the outlet nozzles 6, 25 which terminate in independently adjustable ball nozzles 10.

The length of the airlock 5 in the direction of flow is typically about 50 mm.

The basic principles of the outdoor air valves according to Figures 2-6 are similar to the solution according to Figure 1 30. However, due to the special features of the geometry of the window and glass frames, the lengths of the inlet and outlet nozzles 6 and the air lock 5 differ from the solution of Figure 1.

96442 5

According to the invention, the air lock 5 may alternatively be integral with the outer glass frame 3 and the inlet nozzle 4. In this case, the seal between the inner glass frame 2 and the airlock 5 must be in order. The airlock 5 can also be attached to the frame 1, whereby only the inlet 4 and outlet nozzles 6 5 move with the frames 2 and 3.

Most preferably, the outdoor air valve is located on the lower surface of the upper edge of the frame 1, but in theory it is also possible to place the valve on the upper surface of the lower edge of the window frame or on the sides of the window frame.

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The invention is not limited to window solutions, but is also applicable to doors, such as balcony doors.

Claims (3)

1. A fresh air valve closed to a frame (2, 3) fixed in relation to the space (12) between the window panes for supplying fresh air to a room space, comprising valve 5 - an inlet nozzle (4) for introducing fresh air into the valve, - a flow duct (5), 10 - an outlet nozzle (6) for directing the fresh air from the valve to the room space, and - a filter (11) for filtering the air which has penetrated the valve, characterized in that - the valve structure is substantially inside the frame (1) on the lower side of the upper frame, and the 20-valve structure comprises an air seal (5), the lower part of which is provided with a filter (11). Fresh air valve according to claim 1, characterized in that the bottom (9) of the air reader (5) is of metal or some other material with a high thermal conductivity · Fresh air valve according to claim 1, characterized in that the air weld (5) is attached to the inner frame (2).