EP0045722A1 - 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 enclosed device has the purpose of stuffing the building window as a thermal "hole", respectively. improve its k-value by a factor of 4 to 6. Before the oil price increase, the insulating glass with 2 glasses was considered the optimum, whereas today triple glazing is already considered necessary.

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

When comparing the k-values of the different windows, (according to information from the Swiss Federal Office for Energy), one finds:

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

Triple insulation glazing with a distance of 2 x 12 mm 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 a cost and weight increase of approx. 30% each. In contrast, it is found that the previously customary previous window already has a k value of 2.0., So better insulated than 3 fachgl * This situation of the existing rsuchen was the starting point of V _e, an improvement of the k value of. Building windows can no longer be reached through the addition of insulating glass, but through a new type of front window of modern conception, which only appears visibly when its presence serves a purpose, namely when the outside temperatures are low. 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 take place as automatically as possible, ie depending on the outside temperature. _A s usual today shutters are known as enormous heat leaks, their Sus titution also desired by a better device.

The processing of these relationships led to the following construction:

On the outside of the building facade, slideways with sliding shutters are installed in front of each window, which open up a cavity inside for the reception of a glass. The shop is thus a kind of case for the front window in the summer weather. At low temperatures, it can be pulled out of its container (the shop) using a simple device with a pulling rope, so the front window and shop are two components that can be moved independently in one direction. If the 2 components are locked, however, they act as a unit, i.e. as a store that can take on 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 screw reduction as usual for blinds and roller shutters. The individual motors are connected to the automatic control of the house by an electrical ring line (eg external thermostat of the heating) Of course, there must be a switch in each window with which this automatic can be switched 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, contact closes at 8:00 p.m. via a thermostat timer or photocell and the entire building is closed automatically and simultaneously with front windows. Only those windows in which the automatic switch is set to 0 remain open. The next morning the contact opens, for example. The shops open automatically and simultaneously via the photocell and the entire building.

If the front windows in the shop are now unlocked for winter use, the shutters (as the case of the front window) move into the open position alone. The front 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 freely or completely measured using the switch located in the room

opened via electric motor (or hand crank), ie. in the case 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 front window in the shop is locked during summer operation. If the automatic system is switched on, the shops will, for example. closed in case of dusk, but at most noise insulation can be an advantage.

Description of the individual elements.

Download Fig.A.

A poorly heat-conducting material is used as the building material. The weather side can consist of a hollow profile, for example. Double-wall sheets made of colored acrylic glass, (1) behind it is a cavity (2) for the window glass (3) which is covered on the inside with a profiled plastic plate. 4m brush seals are inserted at the entrance of the cavity (known from door and greenhouse construction) keep the bin and extending glass (5) clean, seal off the cavity and brake undesired air circulation. The entire structure is designed for optimal thermal insulation, with the individual air gaps being dimensioned in such a way that the k value of the construction is not affected 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. With different colors of the individual elements, changing color nuances can arise on the facade, the advantages or disadvantages of which still have to be clarified.

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

The slideways are attached to the outside of the facade so that the air cushion between the interior and the front window has as much volume as possible. Plastic gliders bear the weight of the movable construction. In the simplest version with manual operation as with pull doors, the effort is less than with roller shutters and no pull rope is necessary.

If an operation by hand crank and motor switch is desired without opening the window, a pull rope with deflection pulleys is required which is concealed ie. not visible from the outside. Fig. B shows the cable guide in dashed lines (4) and the guide rollers (5) mounted in the guide rail. The transmission of movement is shown in Fig.C. The cable pulley driven by the motor is (7), it is equipped with a rubber or clutch lining for taking the primary cable (10) with it both rollers 7-9 runs, is pressed into the clutch lining and taken away. The actual traction cable (4) is connected to the primary cable 10 and is guided loosely and tension-free over the deflection pulleys (5), the shutters and front windows being coupled in the appropriate cable section. The ropes run under the window sill (aluminum apron 6) and inside the slide rail (3). They are not visible from the outside, but are easily accessible and exchangeable after the cover (6) has been removed.

In the case of fully automatic expansion with motorization of the shutters and windows independently of one another, the cable system must be run twice and a special sub-area solution is necessary. This is shown in FIG. H.

The two pulleys 7 and 12 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 2 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. The cams 15, 16, 17 are forcibly carried in the direction of rotation, but are displaceable in the longitudinal direction by the push rod 14 on the hollow shaft. The cam (15) is equipped with a freewheel encoder, ie. only the forward is forced, the return is not. The driver cam 17 is in principle 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 is now pulled to the right, the cams 15 and 17 are in engagement with the pulleys 7 and 12, ie the rotation of the motor shaft is transmitted to the ropes, the loading and front window are closed. If the direction of rotation of the motor shaft is changed, the pulley 7 runs back, the shutter is opened. Since the pulley (15) is equipped with the freewheel, the front window remains in the closed position. So charging goes into the open position alone. If the front window is opened for ventilation, the push rod 14 must be pushed to the left. As a result, the cam 16 comes into engagement with the pulley 12. Cams 15 and 17 are disengaged. In this. Position, the front window can be opened or closed with a motor or hand crank, regardless of loading. If, for example, it stays in the half-open position all day, the shop closes in the evening when the automat is switched on and taken the front window up to the stop in the closed position. Since the distance from the front window and the shop can be of different lengths, the primary cable (10) must slide on the clutch lining of the drive roller (12) until the limit switch of the shutter closed position responds. For this reason, the spring (11) should the pulling force on the deflection roller (9) regulier _- be bar. 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 lengths of path 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 and 17 can be reduced. This means that both cams are forcibly engaged at the same time, ie. The shop and the front window move together at the same time, e.g. in summer operation.

The change from winter to summer operation is thus reduced to a simple rotation of the push rod.

Claims (4)

1. Front window characterized in that it is adjustable on slideways on the outside of facades or wall recesses and can be used automatically or by hand depending on the weather. When not in use, it is stored (invisible from the outside) in the sliding shutter of the same window, whereby the overall structure of the shutter and front window is designed for optimal heat and sound insulation. 2. previous window with a protective case as loading characterized in that the store once or may be in several parts, the individual parts can thus be moved independently or coupled to rdunkelung or different tasks in the shading, V _e can assume ventilation. The color of the individual parts can be coordinated with each other and with the facade, so that depending on the application, different color aspects can appear on the facade. 3. Mechanical drive for loading and front window characterized in that the pull rope can simultaneously take over a function as a slip clutch. 4. Mechanical drive for loading and front window characterized in that the movement of the individual elements with motor drive takes place via a threaded rod.

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