EP0045722B1 - External supplementary window which can be automatically controlled in accordance with atmospheric conditions - Google Patents

Abstract

1. External supplementary window (3) which is mounted on bearings in sliding tracks on the outside of a building facade and depending on atmospheric conditions can be slid into place in front of a permanently built in conventional window. The supplementary window is characterized by the fact that when it is not in use, it can be slid on tracks into the interior compartment of a case-like structure consisting of a front side exposed to the elements and a back wall facing the building facade which in itself can be slid on sliding tracks in front of the window opening.

Description

The invention relates to an outside additional window according to the preamble of claim 1.

The enclosed device has the purpose of plugging the building window as a thermal "hole", or to improve its k-value by a factor of 4 to 6. Before the oil price increase, the insulating glass with two glasses was considered the optimum, whereas triple glazing is already considered necessary today.

• Isolierverglasung mit einem Abstand von 12 mm hat einen k-Wert von 3,1 bis 3,5.

A comparison of the k values of the different windows shows:

• Insulating glazing with a distance of 12 mm has a k value of 3.1 to 3.5.

Triple glazing with 2 x 12 mm spacing has a k value of 2.1 to 2.3.

The relatively small improvement in the k-value in triple glazing is therefore paid for with an increase in costs and weight of approx. 30% each. On the other hand, it can be seen that the previously used front window e.g. according to CH-A-35900 already has a k-value of 2.0, i.e. better insulated than triple glazing. This state of affairs of the existing was the starting point of attempts to achieve an improvement in the k-value of building windows no longer by adding insulating glass, but through a new type of additional window of modern design, which only appears visibly if its presence serves a purpose , namely when prevailing low outside temperatures. During the rest of the time, they should be stored in a case in a non-distracting place. Your movement in the rest position and use as thermal insulation should be as automatic as possible, i.e. depending on the outside temperature.

Since the roller shutters common today are known as enormous thermal leaks, their replacement by a better device is also desirable.

This task is solved by the features listed in the characterizing part of claim 1.

On the outside of the building facade, slideways with sliding shutters are attached in front of each window, which have a cavity inside for receiving a glass. The shop is thus a kind of case for additional windows in the summer weather. At low temperatures, it can be pulled out of its container (the store) with a simple device. Additional windows and shutters are therefore two components that can be moved in one direction independently of one another. When the two components are locked, however, they act as a unit, i.e. as a store that can take over its locking or shading function in summer, regardless of whether there is a glass pane inside. A small electric motor is required for automatic operation, e.g. with a worm gear reduction, as usual with blinds and roller shutters. The individual motors are connected to the automatic control of the house by an electrical ring line (e.g. external thermostat of the heating). Of course, there must be a switch in every window that can be used to switch this automatic on or off as required.

If the outside temperature drops to a certain level and a significant heat flow through the windows is to be expected, e.g. at 8 p.m. contact via thermostat, timer or photocell and the entire building are closed automatically and at the same time the shutters with additional windows. Only those windows remain open in which the automatic switch is set to 0. The next morning the contact opens e.g. The photocell and the entire building open the shops automatically and simultaneously.

If the additional windows in the shop are now unlocked for winter operation, the shutters (as a case for the additional windows) move to the open position alone. The additional window remains in place, in front of the window opening and fulfills its function as thermal insulation. For ventilation or when the outside temperature rises, the sliding window can be opened completely or partially at your own discretion using the switch in the room via an electric motor (or hand crank), i.e. be moved to the store.

In the case of an apartment building, there will of course always be individual tenants who will forego the automatic system and will pay a corresponding additional amount for heating bills.

The additional window in the shop is locked during summer operation. If the automatic is switched on, the stores will e.g. closed in the event of twilight, but at most noise insulation can be an advantage. The individual elements of the additional window are described in more detail below with the aid of the figures.

Fig. 1 shows a cross section through a shop with an additional window.

The material used for the store is a poorly heat-conducting material. The weather side can consist of a hollow profile, e.g. double-wall sheets made of colored acrylic glass (1), behind it is a cavity (2) for the window glass (3), which is on the inside again a profiled plastic plate is covered (4). Brush seals (known from door and greenhouse construction) are inserted at the entrance to the cavity, which keep the glass moving in and out clean, seal off the cavity and brake unwanted air circulation. The entire structure is designed for optimal thermal insulation, the individual air gaps are dimensioned in such a way that the k value of the construction is not influenced by falling cold and rising warm air.

The cover plate (4) can also be equipped with a coupling mechanism which allows this element to be moved independently. With this arrangement, different requirements in terms of shading, darkening or ventilation can be met.

The sliding direction is free according to the options available on the building, e.g. Half opening on both sides, one-sided or two-sided sliding, overlapping or telescopic. A scissor-like, collapsible construction is also conceivable, the segments of which can be folded out from the facade by 90 °.

The slideways are fastened to the outside of the facade so that the air cushion between the inner and additional windows comprises as much volume as possible. Plastic gliders bear the weight of the movable construction. In the simplest version with manual operation, such as pull doors, the effort is less than with roller shutters, and no pull rope is necessary.

If operation by hand crank and motor switch without opening the window is required, a pull rope with deflection pulleys is required, which is covered, i.e. not visible from the outside.

Fig. 2 shows the cable guide in dashed lines (5) and the guide rollers (6) mounted in the guide rail. The transmission of movement is shown in FIG. 3. Here, (7) is the rope pulley driven by the motor; it is equipped with a rubber or clutch lining for taking the primary rope (10). The deflection roller (9) is tensioned (12) with an adjustable spring tension, so that the primary rope (10), which runs endlessly over the rollers 7 + 9, is pressed into the clutch lining and taken along.

The actual pulling rope (5) is connected to the primary rope (10), which is guided loosely and tension-free over the deflection pulleys (6), the shutters and additional windows being coupled in the appropriate piece of rope. The ropes run under the window sill (aluminum apron (11) Fig. 4) and within the slide rail (8) according to Fig. 4, 5, 6. They are not visible from the outside, but are easily accessible after removing the cover (11) and interchangeable.

In the case of fully automatic expansion with motorized operation of the shutters and windows, independently of one another, the cable system has to be run twice and a special partial area solution is necessary. This is shown in Fig. 8. The two pulleys (7) and (19) are freely rotatable on the slotted hollow shaft (13) which is driven by the motor. Inside the shaft (13) is the slide rod (14). It has two circumferential notches for the engagement of the cams (15) and (16), which are connected to the push rod (14) by the slot of the hollow shaft (13). _(15-16., 17), the cams are carried along in the direction of rotation forcibly, but are displaceable in the longitudinal direction by the push rod (14) on the hollow shaft. The cam (15) Fig. 7 is equipped with a freewheel transmitter, that is, only the forward is forced, the return is not. The driver cam (17) is basically the same as (16), but is provided with an internal thread in which the external thread of the push rod (14) engages. If this push rod (14) is now pulled to the right, the cams (15) and (17) are in engagement with the rope pulleys (7) and (19), ie the rotation of the motor shaft is transmitted to the ropes, shutter and additional window will be closed.

If the direction of rotation of the motor shaft is changed, the rope pulley (7) runs back and the shutter opens. However, since the cam (15) is equipped with the freewheel, the additional window remains in the closed position, so the shutter goes into the open position alone. If the additional window is opened for ventilation, the push rod (14) must be pushed to the left. As a result, the cam (16) engages on the pulley (19). Cams (15) and (17) are disengaged. In this position, the additional window with motor or hand crank can be opened or closed independently of loading. If it now e.g. remains in the half-open position all day, the shutter is closed in the evening when the automatic system is switched on, and the additional window is taken with you until it stops in the closed position slide the clutch lining of the drive roller (19) until the limit switch of the locking position triggers loading. For this reason, the tensile force of the spring (12) on the deflection roller (9) must be adjustable. For each window, it is set according to the respective glass weight in such a way that the primary rope takes the load with it, but it can safely slip over different path lengths until the limit switch responds.

On the push rod (14) on the left side there is an external thread (18) which engages in the internal thread of the cam (17). By rotating the push rod (14), the distance between the cams (16) u. (17) can be reduced. This means that both cams are forced to engage simultaneously, i.e. The shutter and additional window move together at the same time, e.g. in summer operation.

Claims (1)

1. External supplementary window (3) which is mounted on bearings in sliding tracks on the outside of a building facade and depending on atmospheric conditions can be slid into place in front of a permanently built in conventional window. The supplementary window is characterized by the fact that when it is not in use, it can be slid on tracks into the interior compartment of a case-like structure consisting of a front side exposed to the elements and a back wall facing the building facade which in itself can be slid on sliding tracks in front of the window opening.

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