| SE529508C2 | 2007-09-04 | |||
| SE529508C2 | 2007-09-04 |
| Patent claims 1 Window containing an insulating pane (4) of the kind which has at least two rectangular congruous panes (5,6) not removable fastened to each other, characterised by the fact that inside the insulating pane and at a distance from it a pane (14) is placed which is shorter than the insulating pane at the top, that above the pane there is a horizontal tube (10) on which there is a blind (11) which can be rolled up, that the tube is wholly or partly situated outside the outer side of the shorter pane, that the blind can be inserted into the space (13) between the insulating pane and the glass pane, that a hood (8) containing the tube is attached at the shorter pane and that the shorter pane and the hood are attached at the window frame so that very little air from the inside can get into the space (13) between the insulating pane and the glass pane whereas air from the outside can enter the mentioned space. 2 Window according to Patent Claim 1, characterised by the fact that there is an air filter (25, 30) between the outside air and the space (13) between the insulating pane and the glass pane. 3 Window according to any earlier patent claim, characterised by the fact that spacing strips (17) are attached at the outer edges of the inside of the glass pane (14). 4 Window according to any earlier patent claim, characterised by the fact that spacing strips are attached to the outer edges of the inside of the insulating pane. 5 Window according to any earlier patent claim, characterised by the fact that the frame has been made so that the insulating pane (4) and the glass pane (14) shall be inserted into the frame from its inside. 6 Window according to any earlier patent claim, characterised by the fact that the frame has been made so that the insulating pane (4) and the glass pane (14) shall be inserted into the frame from its outside. 7 Window according to any earlier patent claim, characterised by the fact that the tube (10) contains an electric motor for operating the blind. |
Window
The window is a further development of the Swedish patent 529508 where an insulating pane containing a blind is described.
For the insulating panes which are now manufactured, a type certificate is required for approval showing that the insulating pane theoretically will prevent injurious penetration of moisture for a hundred years.
According to the above-mentioned patent a metal hood is to be put quite tight on the pane which has proved difficult. For manoeuvring the blind there is a shaft going out through a sealing in one end of the hood. It is especially difficult to guarantee that the sealing will be tight for a very long time, among other things because the ageing qualities of the sealing material are doubtful. Especially these uncertainties mean a resistance to the acceptance of the insulating pane. There are reasonable demands that the pane will be intact for several decades. This resistance is the reason for this alternative solution. With the invention it is attained that the same little distance between the outer panes of the window can be kept. Further there will be a lower cost if one of the panes breaks since not everything has to be exchanged. It will also be possible to exchange the blind fabric without big costs if it becomes discoloured or you want another pattern since the inner pane is removable fixed against the insulating pane. As mentioned in the patent, to be able to remove and then put on the hood tight enough has proved not practically possible.
When water is condensed on a glass surface you cannot see clearly through the glass. It is therefore quite crucial for the value of the window that there is no condensation on any of the glass surfaces.
When using insulating panes the space between the panes is entirely free from water why no condensation can be formed there. In cold weather the outer pane in a triple glazed window becomes cold. The inner pane holds almost room temperature and the pane between gets a temperature between those of the two other panes.
If the space between a double-glazed insulating window and an inner pane is connected with the air in the room which normally has an atmospheric humidity of 40 - 80 per cent, the steam of this air can be condensed on the insulating pane which is turned to the inner pane and the transparency deteriorates.
By letting the space between the insulating pane and the glass pane get access to the outdoor air which in cold weather contains only a little steam and the temperature on the pane between is higher than the dew point of the air between the insulating pane and the glass pane, there will be no condensation on the surface of the insulating pane which is turned to the inner glass pane.
By having the blind between the insulating pane and the glass pane you attain that it is not impeded by flower pots and other things which are often on a windowsill. Nor can the blind be dusty from the apartment.
The window frames shown on the figures are of wood. They can of course be made of other material, for instance of polyvinyl chloride.
The windows as they are shown in the figures are, if the windows are not to be opened, intended to be put in directly in window frames. If the windows are to be opened they ought to be put in frames designed in one of many well-known ways.
It is important for the invention that the distance between the outer panes can be the same as for existing triple-glazed windows. Existing window frames can often be used without big changes.
The invention has the special characteristics that are evident from the patent claims.
The invention is to be further explained by means of figures.
Figure 2 shows a window in a vertical projection where the panes are put into the window frame from the outside.
In the two figures common parts are indicated with the same number. The upper part of a window frame is indicated with 1, its lower part with 2 and its side parts with 3. A double glazed insulating pane consisting of an outer pane 5 and an inner pane 6 is indicated with 4 generally. The two panes are not removably fixed to each other with sealing compound and glue on a metal tube 7 in a well- known way. The panes are rectangular and congruous. A metal hood, of which one of the gables is denoted with 9, is indicated with 8. In the gables a thin aluminium tube is stored on which a blind 11 can be wound. A part of the blind is not wound up and is in the space 13 between the inner pane of the insulating pane and at a distance from this existing pane 14. In the outer end of the blind there is a weight 15. The pane 14 is shorter at the top than the glass of the insulating pane and its upper edge is denoted 16. The hood in figure 1 is glued from below against the glass 14 and against a solid plastic strip 17 which is glued to the inside of the glass 14. This plastic strip is intact against the sides of the window frames but has interruptions at the top and at the bottom where ends of it 18 are visible. Outside the glass 14 there is a weather strip 19 which seals the glass 14 and the hood 8 against an upper metal strip 20, two side strips 21 and a lower strip 22. The strips are fastened with screws 23 in the window frame. A little support on which the insulating pane rests is indicated with 24. There may be similar supports on the sides of the insulating pane. An air filter which is insignificantly to stop the air is indicated with 25. With arrows it is shown how the outdoor air can pass from the outside and through the space 13 and then out. Instead air can pass the opposite way. Even if it takes a long time there is a levelling of the air in the space with the outdoor air. A pearl chain for handling the blind tube is denoted 26.
What is different on the window according to figure 2 will be mentioned here. The hood 8 is here glued outside the pane 14 and above the upper edge 16 of the pane and on a strip 27 of the same thickness as the pane 14. To prevent the blind from rubbing against the edge of the pane a metal strip 28 has been welded inside the hood. The sealing strip 29 seals the pane 14 against the window frame all around. An upper and a lower air filter are indicated with 30. Where there is no air filter solid plastic strips are fastened to the pane 14. Strips 31, 32 and 33 press the insulating frame 2 and the pane 14 against the sealing strips and the window frames. In the strips 31 and 32 there are air ducts 34. Arrows show how outdoor air can pass in and out from the space 13. The strips 31, 32 and 33 are removable fixed with screws.
It can be arranged so that every hood contains a light-proof blind and a thinner one as a sunshield. They can be manoeuvred with a pearl chain from each gable. Instead of a pearl chain a string which can be squeezed a little can be used in a well-known way. To hoist the blind you can also use a thin cord which is pulled down and where continuous pulling down can be stopped by blocking. The blind can be rolled off the blind tube because of the weight 15.
It can be arranged so that only the hood is removable from the pane 14 and the strip 27. It can be removed to change the blind or the shaft sealing. There is no demand that the hood must be mounted absolutely airtight.
The air filters which are mentioned can be replaced by more pervious nets.
An electric motor can be mounted inside the blind tube for manoeuvring the blind.