EP1594968A1

EP1594968A1 - Fireproof roller shutters and method for producing a fireproof roller shutter

Info

Publication number: EP1594968A1
Application number: EP04711602A
Authority: EP
Inventors: Bernd Heydebreck
Original assignee: HEYDEBRECK GmbH
Current assignee: HEYDEBRECK GmbH
Priority date: 2003-02-17
Filing date: 2004-02-17
Publication date: 2005-11-16
Anticipated expiration: 2024-02-17
Also published as: WO2004072288A1; DE502004008967D1; DE20302528U1; ATE422546T1; EP1594968B1

Abstract

The invention relates to a fireproof roller shutter comprising a shutter box and a shutter curtain that can be rolled up into said box, the curtain comprising a large number of hollow-profile elements that are interconnected in a hinged manner. The box and the profile elements are configured from a flame-resistant sheet metal and the profile elements are at least partially filled with a material that is at least flame-retardant and is a poor thermal conductor.

Description

Fire protection roller shutter and method for manufacturing a fire protection roller shutter

The invention relates to a fire protection roller shutter with a roller shutter box and a roller shutter curtain which can be wound up in the box and which has a multiplicity of hollow profile elements connected to one another in a hinge-like manner.

Such roller shutters are known in principle and are used, for example, to darken or protect windows or balcony doors of private or commercial buildings. The hollow profile elements of known roller shutters are usually made of plastic or aluminum and therefore do not offer adequate protection against an outbreak of fire.

Roller shutters that are specially designed to prevent the spread of fire are known from the area of underground or parking garage entrances. Due to the size of the area to be covered, particularly stable and thus heavy versions of roller blinds are required, which in turn requires particularly powerful drives for the roller blinds. In order to create the necessary security, such fire protection devices often also comprise two roller blinds that can be lowered parallel to one another. This makes the construction of such fire protection devices very complex and costly overall. There is an increasing need to equip even smaller openings in buildings, such as pass-throughs, windows or doors, with a fire protection roller shutter. For example, for safety reasons, it may be necessary to separate a kitchen area from a dining room in terms of fire technology in a hotel, a public building, a canteen or a gas store.

The invention is therefore based on the object of providing a fire protection roller shutter which is suitable for use on windows, doors or similar comparatively small through openings and which has a simple structure.

To solve the problem, a fire protection roller shutter with the features of claim 1 is provided.

A fire protection roller shutter according to the invention comprises a roller shutter box and a roller shutter curtain which can be wound into the box and which has a multiplicity of hinge-like interconnected hollow profile elements, the box and the profile elements being formed from a fire-resistant metal sheet and the profile elements at least partially with an at least fire-retardant and thermally poorly conductive material are filled.

Because the fire protection roller shutter according to the invention has a construction similar to that of conventional window shutters, it can be produced with comparatively little economic outlay. At the same time, it can be installed wherever a conventional roller shutter could also be installed. The installation of a fire protection roller shutter according to the invention does not require a significantly increased assembly effort, but it must Installation must be carried out by qualified installation personnel and the system must be regularly maintained with regard to fire protection.

Thanks to the use of fire-resistant metal sheet, the box and the armor can withstand the temperatures that occur during a building fire over a period of at least 30 minutes without being burned or deforming significantly. The thermally poorly conductive material has an insulating effect which, if the material is selected appropriately, can result in the temperature on the side of the roller shutter facing away from the fire being considerably lower than on the side of the fire and not exceeding 200 ° C. In this way it can be prevented over a certain period of time that the fire continues on the side of the roller shutter facing away from the fire due to a temperature transfer through the roller shutter. That the fire protection roller shutter according to the invention reaches at least class F30, now the European class El 30.

So that the material in the profile elements cannot ignite, it is also a fire-retardant material. The term "fire-retardant" is to be understood here in the sense of the building code term for the requirement of the fire behavior of components and special components and usually means a fire resistance of 30 minutes, whereby flammable building materials are permissible, even if they are not desired according to the invention.

The expression "at least fire retardant" used here means that not only "fire retardant" but also "fire resistant" materials are suitable. The term "fire-resistant" in the sense of the building code term for the requirement of fire behavior of components and special components should also be understood. hen. Accordingly, a "fire-resistant" material usually withstands a fire for 90 minutes and consists essentially of non-combustible building materials. Non-combustible materials are understood here to mean those materials that are assigned to building material class A according to DIN 4102.

Advantageous embodiments of the invention can be found in the subclaims, the description and the drawing.

It is particularly advantageous if the box and / or the guide rails have or have an at least fire-retardant coating on at least one side exposed to fire. The side exposed to fire is the side of the roller shutter on which the risk of fire is greatest. However, since when a fire protection roller shutter is used inside a building, for example to secure a hatch between a kitchen area and a dining room, a fire can generally break out on both sides of the roller shutter, it is particularly advantageous if the box and / or the guide rails are on both sides the fire retardant coating. Suitable materials are those that are classified in building material class A according to DIN 4102.

The coating can be a ceramic coating or a mineral coating, in particular based on cement technology and calcium silicate. An example of such a mineral coating are sheets made from PROMATECT, which are manufactured and sold by Promat GmbH.

The profile elements can be filled with quartz sand or with other fire-retardant materials. According to a further embodiment, the profile elements sit positively on one another in the unwound state of the armor. As a result, the tank has a particularly high level of tightness, which on the one hand prevents flames from penetrating through the tank and on the other hand ensures that the air permeability of the tank is as low as possible so that a fire source is not unnecessarily supplied with oxygen.

The profile elements are preferably free of light slots. This further increases the tightness of the tank. Possibly. If the profile elements are positively seated one on top of the other, it is possible to provide light slots in the area between the hinge and the fetched part of the profile elements, provided that these are not visible in the fully developed state of the shell.

According to a further embodiment of the roller shutter, the profile elements have a curvature. This curvature allows the tank to be wound into the box to save space.

The ends of the hollow profile elements are advantageously closed. This on the one hand prevents the thermally insulating material from escaping from the profile elements, and on the other hand prevents flames from entering the profile elements in the event of a fire.

The ends of the profile elements can be closed by an at least fire-retardant foam material. Such a material is particularly easy to process, so that the profile elements can be closed with little effort. An example of one Foam material is PROMAFOAM-C, which is manufactured and sold by Promat GmbH.

It is most favorable if the hollow profi le is filled with a material which, if necessary, is filmed from a mixture of cement, water and calcium sulfate (gypsum) together with silicates (for example calcium or sodium silicates) and / or reinforcing fibers and / or / or other filler material. It would also be conceivable to use silicates instead of gypsum or cement in the mixture.

The cured material can contain water in free form (i.e. distributed in the pores of the material) or in chemically bound form.

It has surprisingly been found according to the invention that a certain proportion of water slows down the heating of the profile elements. If necessary, perforations can be provided on the convex side of the profile elements, which allow water vapor to escape, which results in a type of perspiration cooling.

On the one hand, the water content must not be too high, since otherwise the profile elements would become too heavy and it would be difficult to wind them up with a conventional tubular motor.

It is also particularly favorable if the hollow profile elements are provided with metal caps or steel caps or fire-resistant metal caps, which on the one hand keep the filling trapped in the hollow profiles and on the other hand are fire-resistant in the event of a fire. According to a particularly preferred embodiment, the profile elements are guided in guide rails made of fire-resistant metal, for example stainless steel, V2A steel or galvanized steel. On the one hand, the guide rails contribute to the mechanical stability of the roller shutter by fixing the armor in its position in the unwound state. Through the use of fire-resistant metal, the guide rails also withstand the elevated temperatures that occur in the event of a fire for a certain period of time.

The guide rails can have a substantially U-shaped profile. This ensures that the roller shutter curtain is guided securely during its unwinding or rewinding movement.

Advantageously, at least one leg and preferably both legs of each U-shaped profile are provided on its inside with an elongated strip of a material that foams or swells in the event of fire in order to seal an intermediate space between the armor and the guide rail. This strip prevents flames and / or smoke developing in the event of a fire from spreading or spreading through an intermediate space between the armor and the guide rail to the other side of the roller shutter. This further increases the security of the fire protection roller shutter.

It is favorable if the material of the elongated strips has sliding properties in the normal state of use. This minimizes the frictional forces when winding and unwinding the roller shutter curtain in the normal state. An example of such a material is PROMASEAL, which is manufactured and sold by Promat GmbH. The outside of the U-profiles can also be covered with a fire-retardant or fire-resistant material.

According to a further embodiment, an outlet opening of the box for the tank is provided with one and preferably two elongated strips of a material which foams or swells in the event of fire in order to seal or minimize an intermediate space between the tank and box. This reduces flame penetration into the box, which could damage the take-up drive and possibly controls located in the box or an emergency power supply.

According to a further embodiment, the profile elements of the shell can be wound on a shaft made of steel, for example made of stainless steel, V2A steel or galvanized steel, arranged in the box. This design also ensures the stability of the shaft at elevated temperatures over a certain period of time.

The armor is advantageously anchored to the shaft by means of spring steel strips. The spring steel strips are not only used to fasten the roller shutter armor to the shaft, but due to their spring properties when the roller shutter armor is completely unwound, they also exert such a force on the profile elements closest to the shaft that the armored shell is essentially flat over its entire length.

According to a further embodiment, an electric drive is provided for winding and unwinding the roller shutter curtain. Although manual winding and unwinding of the roller shutter curtain would be conceivable, as is known from conventional window shutters, an electrical connection However, the advantage was that the drive can be coupled to a smoke or fire detection system to automatically activate the roller shutter when a smoke or fire alarm is triggered.

The drive can have an AC motor. This motor can be connected to the power supply in a building. The drive is advantageously additionally coupled to an emergency power supply. This means that the roller shutter can be operated even if the building's power supply fails.

A 24V battery pack can be used as emergency power supply. In principle, however, the use of other types of batteries is also possible.

So that the direct current of the battery pack can be converted into the alternating current required for the AC motor, a converter is advantageously connected between the battery pack and the AC motor.

It is best if a DC motor is used, preferably a 24 V tubular motor, which is housed in the reel of the tank. The direction of rotation of such a motor can easily be changed by reversing the polarity. In the case of a DC motor, the mains voltage is first transformed down to 24 V using a transformer and then rectified to 24 V DC using a rectifier and, if necessary, smoothed.

According to a further embodiment, the AC motor, the battery pack, the converter and / or a charger could be arranged in the roller shutter box. Through the sub In the box, the components are protected from damage caused by increased temperature, flames or smoke developing in the event of a fire, at least for a certain time. However, it is preferred to accommodate the battery pack with the charger and, if appropriate, the converter in a separate, fire-protected housing which may be plastered in the masonry.

It is particularly advantageous if, in particular, an emergency switch, which can be actuated manually, is provided outside the roller shutter, by means of which a closing movement of the tank can be stopped and / or reversed. By actuating this emergency switch, people who are in the event of a fire on the fire side of the roller shutter can stop the closing movement of the roller shutter or open the roller shutter again in order to move to the other side of the roller shutter. The security of the entire arrangement is thus further increased.

By actuating the emergency switch, a power supply to the drive can be interrupted at least temporarily.

Alternatively or in addition to this, it is also possible for an actuation of the emergency switch to activate a circuit which is connected between the power supply and the drive and which at least temporarily reverses the drive direction.

The closing movement of the tank can be continued by actuating the same or a second emergency switch. Such a second emergency switch is advantageously arranged on the opposite side of the roller shutter from the first emergency switch, so that people who in the event of fire escape from the fire side of the roller shutter to the other side have the second emergency switch to continue the closing movement of the roller shutter curtain.

Alternatively, a timer circuit can be provided, which restores the power supply to the drive or adjusts the drive direction after a preset time period after an interruption or reversal of the closing movement so that the closing movement of the tank is continued. When using such a time switch, it is not necessary for a person who has brought himself to safety from the fire side of a roller shutter to the other side after interrupting or reversing the closing movement to continue the closing movement of the roller shutter curtain by actuating a switch. This increases the safety of the fire protection roller shutter, since a person can easily panic if a fire breaks out or there is a lot of smoke and could forget to consciously operate such an emergency switch.

Particularly preferred embodiments of the invention emerge from the subclaims and the description below.

The invention is described below purely by way of example using an advantageous embodiment and with reference to the drawing. Show it:

Fig. 1 is a cross-sectional view of an inventive

Roller shutters with unwound roller shutter curtain;

Fig. 2 shows a cross section through a hollow profile element of the

Roller shutter of Fig. 1st Fig. 6 shows a cross section through a profile element that is particularly well suited for the roller shutter according to the invention.

Fig. 3 shows a cross section through a guide rail of the

Roller shutter of Fig. 1;

Fig. 4 is a frontal view of the roller shutter of Fig. 1;

Fig. 5 is a front view of another embodiment of the

Roller shutter of Fig. 1;

Fig. 6 shows a cross section through a profile element that is particularly well suited for the roller shutter according to the invention and

7 shows a device consisting of two fire protection roller shutters.

1 shows a roller shutter which is provided for closing a window opening and which comprises a roller shutter box 10 in which a roller shutter armor 12 can be wound up. Fig. 1 shows the situation in which the roller shutter curtain 12 is completely unwound, i.e. in which the window opening is completely closed.

The roller shutter box 10 is formed from galvanized steel sheet 14, which has a thickness of approximately 2 mm. The end faces of the roller shutter box 10 are each closed by (not shown) blind caps, which are formed from a galvanized steel sheet with a thickness of approximately 3 mm. A bearing 16 for a shaft 18 is provided in a central region and on the side of each blind cap facing the inside of the box 10. see that is used to wind up the roller shutter curtain 12. The shaft 18 has an octagonal hollow profile with a diameter of approximately 70 mm and is formed from sheet steel with a thickness of approximately 1.5 mm. At the ends of the shaft 18, shaft bolts (not shown) formed from steel are provided, through which the shaft 18 is rotatably mounted in the bearings 16. A tubular motor - not shown - is integrated in the hollow shaft in a manner known per se.

The roller shutter curtain 12 has a multiplicity of hollow profile elements 20 which extend parallel to the shaft 18. The profile elements 20 are each connected to one another in a hinge-like manner. As can be seen in FIG. 2, the profile elements 20 of the exemplary embodiment shown are double-walled and roll-formed stainless steel profiles with a total width of approximately 14 mm and a total height of approximately 53 mm. The profile elements 20 are hook-like on one side (on the top in FIG. 2), while on the opposite side (on the bottom in FIG. 2) they have a bulge 22 into which the hook-like structure 24 of the next profile element 20 in each case intervenes.

The (uppermost) profile element 26, which is closest to the shaft 18, and the most distant (bottom) profile element 28 each have a shape that deviates from the shape shown in FIG. 2. The lowermost profile element 28, which is to close as closely as possible with a ledge 29 of the window, has a flat underside. In order to achieve the tightest possible closure of the roller shutter curtain 12 with the window ledge 29, the underside of the lowermost profile element 28 can be covered with a sealing material 31 which foams or swells in the event of a fire. A suitable sealing material is, for example manufactured and distributed by Promat GmbH under the name PROMASEAL-PL.

Possibly. For example, a locking mechanism can also be provided on the lowermost profile element 28, which interacts with a correspondingly complementary mechanism on the window ledge in order to prevent unauthorized opening of the roller shutter, which increases security against break-ins. It is particularly expedient if a contact end strip made of steel is provided, which acts as a safety device.

The uppermost profile element 26 is anchored to the shaft 18 by means of spring steel strips 30. The spring steel strips 30 can be powder-coated and each have a clip-like bulge 32 at one end, which, like the bulges 22 of the profile elements 20, are designed to accommodate the hook-like structures 24 of the uppermost profile element 26. The other ends of the spring steel strips 30 are fastened to the shaft 18, for example, by means of a rivet, bolt or hook connection.

The spring steel strips 30 extend essentially perpendicular to the shaft 18 and are arranged at a distance of approximately 20 cm from one another along the shaft 18. The length of the spring steel strips 30 is chosen such that they exert a force on the uppermost profile elements 20 when the roller shutter armor 12 is completely unwound and press them away from the shaft 18 such that all the profile elements 20 of the armor 12 lie essentially in one plane. The roller shutter curtain 12 consequently forms an essentially flat surface in the unwound state.

The profile elements 20 sit in a form-fitting manner on one another in the unwound state, in particular the armor 12 points in contrast to conventional roller shutters have no light slits. In this way, it is prevented that flames and / or smoke developing in the event of fire can or can penetrate through the tank 12. In order to allow the space-saving winding of the profile elements 20 on the shaft 18, the profile elements 20 also have a curved shape.

The hollow profile elements 20 are also at least partially filled with a thermally poorly conductive material. This material causes the roller shutter curtain 12 to have a thermally insulating effect, i.e. the temperature on one side of the armor 12 under fire is higher than the temperature on the other side of the armor 12. In this way, at least for a certain time, a fire can be prevented from spreading through the roller shutter armor 12 due to temperature conduction.

So that the filler material does not ignite in the profile elements 20, it is a fire-retardant material. In the exemplary embodiment shown, a strip 21 of an insulation board produced using cement technology and based on calcium silicate is introduced into each profile element 20. Such a material is manufactured and sold by Promat GmbH, for example, under the name PROMATECT. In this embodiment, the cavities 23 remaining by inserting the strip 21 into the hollow, curved profile element are permissible, but these can optionally be filled with a fire-retardant and also poorly conductive material, if necessary in a viscous form.

Alternatively or additionally, it is also possible to fill the profile elements 20 with dry quartz sand. The ends of the profile elements 20 are each foamed with a non-combustible foam material, ie locked. A suitable foam material is manufactured and sold by Promat GmbH, for example, under the name PROMAFOAM-C.

The roller shutter curtain 12 is guided on its side edges running transversely to the shaft 18 in guide rails 34 which extend parallel to the window in the closing direction of the armature 12, that is to say in the illustrated embodiment in the vertical direction. As shown in Fig. 3, the guide rails 34 have a substantially U-shaped profile which is welded to a square hollow profile 36 with an edge length of 30 mm x 30 mm at 35 by longitudinal welds. The U-profile also has a base length of 30 mm and a side length of about 40 mm. Both the hollow profile 36 and the legs 38 are formed from steel and have a wall thickness of approximately 3 mm.

The cavities 37 of the hollow profiles 36 serve to receive bolts (not shown) which are provided on an underside of the roller shutter box 10. These bolts can be formed from a solid or a tubular steel, and their cross section is adapted to the cross section of the cavities 37. The roller shutter box is fixed to the guide rails 34 by the bolts engaging in the cavities 37.

Elongated strips 40 of a material are attached to the inside of the legs 38, which foam or swell in the event of a fire. The strips 40 have a width of approximately 25 mm and extend substantially over the entire length of the guide rails 34. If the elongated strips 40 foam or swell in the event of a fire, they seal off spaces between the ends guided in the guide rails 34 of the profile elements 20 and the legs 38 or the hollow profile 36, and thus prevent that in the event of fire developing flames and / or developing smoke can or can pass over the guide rails 34 past the profile elements 20 to the other side of the tank 12.

As long as the elongated strips 40 are not foamed or swollen, they have certain sliding properties or allow the profile elements 20 a certain amount of play in the guide rails 34. This ensures a smooth movement of the profile elements 20 in the guide rails 34 and a friction-free expansion. and unwinding the roller shutter curtain 12 ensured. A suitable material for the elongated strips 40 is known under the name PROMASIL and is manufactured and sold by Promat GmbH.

An outlet opening 42 of the roller shutter box 10 for the armor 12 is also provided on both sides of the armor 12 with elongated strips 44 of the material described above or a similar material (FIG. 1). In the event of a fire, the elongated strips 44 ensure that the outlet opening 42 is sealed, so that the interior of the roller shutter box 10 and drive components contained therein, in particular electrical components, are protected against the ingress of flames and / or smoke.

In order to further increase the fire safety of the roller shutter, all outer surfaces of the roller shutter box 10 and the guide rails 34 are provided with a coating 46 which consists of a fire-retardant material, i.e. a material that can withstand fire for at least 30 minutes.

In the illustrated embodiment, ^" the coating 46 consists of approximately 15 mm thick plates, which consist of a material that is under the name PROMATECT is manufactured and distributed by Promat GmbH. The plates are riveted onto the steel sheet of the roller shutter box 10 or onto the guide rails 34 or glued on with a fire-resistant adhesive. Gaps and spaces between adjacent panels are sealed by the PROMASEAL sealing material mentioned above.

The fire protection roller shutter described above fulfills the criteria of fire protection class T30. A minimum fire resistance in accordance with class El 30 is achieved by an arrangement in which two fire protection shutters of the type described above are parallel at a distance of approximately 30 cm, i.e. approximately one wall apart, on the fire-exposed side of a window and the fire-facing side of a window are arranged to each other, as shown in FIG. 7.

As shown in FIG. 4, a drive 48 for unwinding or winding up the roller shutter curtain 12 is arranged on the shaft 18 in the roller shutter box 10. In the exemplary embodiment shown, the drive 48 is an alternating current operated electric motor which is in engagement with one end of the shaft 18 for driving the shaft 18. The motor 48 is connected via a line 50 to a power supply 52, which is provided regularly in the building.

The drive 48 is also connected to a smoke and / or fire detection system 54. In the exemplary embodiment shown, the connection is made via a line 56, but it can equally well be made by means of wireless signal transmission. When a fire or smoke alarm is triggered, the smoke and / or fire detection system 54 sends a corresponding signal to a drive control (not shown). which activates the motor 48 to unwind the roller shutter curtain 12. When the profile elements 20 are unwound, the armor 12 executes a closing movement in the direction indicated by the arrow 58, downwards in the drawing, in order to close the window opening 60.

A switch 62 is provided next to the window and is either connected directly to the motor 48 or to the drive control. The switch 62 is an emergency switch which is intended to enable people who are still on the fire side of the roller shutter in the event of a fire to prevent the window opening 60 from being closed and thus to prevent an escape route.

The switch 62 can be designed as a pushbutton or pushbutton switch in such a way that the power supply to the motor 48 is interrupted by actuation of the switch 62 and the closing movement of the roller shutter curtain 12 is stopped. Alternatively, by actuating the switch 62, a signal can be transmitted to the drive control which triggers a reversal of the direction of rotation of the motor 48 and thus leads to the roller shutter curtain being rolled up. In this variant, the tank 12 can be raised so far that an area of the window opening is opened which enables a person to climb under the tank 12 to the other side of the roller shutter, escape doors always being present in these rooms ,

On the other side of the roller shutter is a switch (not shown) next to the window, the actuation of which causes the roller shutter curtain to continue its closing movement. In principle, this switch is designed like the switch 62, only its actuation results in a renewed coupling of the motor 48 to the power supply or in a renewed reversal of the direction of rotation of the motor 48 Operation of this switch may be a person who has brought to the other side of the roller shutter to safety, the roller shutter ^• condescend behind to further spread to prevent the fire.

Since it is not possible to predict which side of the roller shutter a fire will break out and / or smoke will develop, the switch 62 and the corresponding switch on the other side of the roller shutter cooperate in such a way that the actuation of the one (first actuated) switch always closes Cancellation and actuation of the other (then operated) switch always leads to a continued closing movement, regardless of which side the switch was operated first. Pressing the same switch again can continue the closing process.

In addition or as an alternative to the continuation of the closing movement by a renewed actuation of the switch, the drive control of the motor 48 can also have a timer (not shown) which ensures that in the event of a fire or smoke alarm, the closing process takes place after a predetermined time has elapsed the switch 62 triggered interruption or reversal of the closing movement continues automatically. In this case, it is not necessary to actuate a switch to continue the closing movement on the side of the roller shutter facing away from the fire, which is particularly advantageous because people may forget to actively close the roller shutter behind them due to panic. In this case, the switches on both sides of the roller shutter are used only to interrupt or reverse the closing movement.

If the closing process - triggered by the time switch - should continue before everyone could get to safety, then so the closing movement can be stopped again by pressing the switch on the fire side or on the side facing away from the fire or vice versa.

FIG. 5 shows a further embodiment of the roller shutter, in which, in addition to the drive 48, an emergency power supply in the form of an accumulator package 64 is accommodated in the roller shutter box in comparison with the embodiment of FIG. 4 and serves the motor 48 in the event of a failure of the building power supply to supply with electricity. The battery pack 64 is designed for a voltage of 24 V. In order to provide the alternating current required for the motor 48, a direct current / alternating current converter 66 is connected between the battery pack 64 and the motor 48. A charger for the battery pack 64 is also provided, which ensures that the battery pack 64 is always charged.

The battery pack 64 can therefore be recharged by the regular building power supply 52 at regular intervals or when the charge level falls below a predetermined level. A controller (not shown) is provided for monitoring and regulating the state of charge or the charging process of the battery pack 64. If the battery pack 64 is monitored and charged automatically, an optimal state of charge and thus an optimal power supply for the roller shutter drive 48 is ensured at all times.

FIG. 6 shows the preferred cross section of the hollow profile element used, the hollow element in the illustration of FIG. 6 being completely filled with fire-retardant material 21 '. The filling 21 'consists of a mixture of cement, water and calcium sulfate (gypsum), optionally together with reinforcing fibers, such as E-fibers, glass fibers, mineral fibers or reinforcing filaments and, if appropriate, further filler material. The profile elements are filled by the mixture in a flowable state. For example, the mixture can be filled into the profile elements by means of a tube, the mixture being pumped through the tube which is initially inserted deep into the respective profile element and the tube being pulled out of the profile element when the profile element is filled. In this way it can be ensured that the cross section or the entire volume of the profile element is filled with filler material.

The profile elements can be provided at one end with a metal cap or steel cap or a metal or steel plug, which prevents the filling material from coming out of the profile element. It is also possible to fill the respective profile elements from both ends. After filling, the second ends of the profile elements are also closed with a corresponding cap or a stopper. It is also possible to produce longer profile elements and cut them into several shorter lengths after filling and then to provide them with metal caps or plugs at both ends.

After the filling, the profile elements are preferably kept for curing and / or drying the filling.

Finally, FIG. 7 shows a double arrangement according to FIG. 1 with a first and a second roller shutter on opposite sides of a hatch or a door opening. You can see that in the area of Pass through or the door opening, the two roller shutter curtains 12 and 12 'have a distance from each other, which is at least essentially determined by the wall thickness and is often in the best case between 25 and 30 cm.

It can be seen that the concave sides of the individual profile elements 20 each point outwards, since this is favorable for the rolling process on the respective shafts 18. If necessary, the profile elements can have a perforation on the concave side, which ensures perspiration cooling of the roller shutter curtain in the event of a fire.

In the fire protection test, a temperature of 850 ° C. is generated on one side of the roller shutter curtain and it has been found according to the invention that the temperature on the opposite outside of the second roller shutter curtain remains below 140 ° C. even after more than 30 minutes.

LIST OF REFERENCE NUMBERS

Shutter box

Roller curtain

sheet steel

camp

wave

profile element

material filling

strip

bulge

Cavity hook-like structure

profile element

sill

Spring steel strips

sealing material

bulge

Guide rail

Weld

Square hollow profile

cavity

Leg of elongated stripe

Elongated strip outlet

coating

engine

Electricity supply

management

Fire and / or smoke detection system

closing direction

window opening

switch

accumulators package

DC / AC converter

Claims

Expectations

1. Fire protection roller shutter with a roller shutter box (10) and a roller shutter curtain (12) which can be wound up in the box and which has a plurality of hollow profile elements (20) connected to one another in a hinge-like manner, the box (10) and the profile elements (20) being made of a fire-resistant metal sheet ( 14) are formed and the profile elements (20) are at least partially filled with an at least fire-retardant and thermally poorly conductive material.

2. Fire protection roller shutter according to claim 1, characterized in that the metal sheet (14) is formed from stainless steel, V2A steel, galvanized steel, corrosion-resistant or corrosion-protected steel or from another fire-resistant metal.

3. Fire protection roller shutter according to claim 1 or 2, characterized in that the box (10) and / or guide rails (34) has or have a fire-retardant coating (46) at least on one side exposed to fire.

4. Fire protection roller shutter according to claim 3, characterized in that the coating (46) is a ceramic coating or a mineral coating, in particular based on cement technology and calcium silicate.

5. Fire protection roller shutter according to one of the preceding claims, characterized in that the profile elements (20) sit positively on one another in the developed state of the armor.

6. Fire protection roller shutter according to one of the preceding claims, characterized in that the profile elements (20) are free of light slots.

7. Fire protection roller shutter according to one of the preceding claims, characterized in that the ends of the profile elements (20) are each closed by an at least fire-retardant material.

8. Fire protection roller shutter according to one of the preceding claims, characterized in that the ends of the profile elements (20) are closed by an at least fire-retardant foam material.

9. Fire protection roller shutter according to one of claims 1 to 7, characterized in that the ends of the profile elements (20) are each closed by a steel plug or a steel cap.

10. Fire protection roller shutter according to one of the preceding claims, characterized in that the profile elements (20) are filled with quartz sand, in particular with dry quartz sand.

11. Fire protection roller shutter according to one of the preceding claims, characterized in that the profile elements (20) are guided in guide rails (34) made of a fire-resistant metal and in particular made of steel, for example made of stainless steel, V2A steel or galvanized steel.

12.- Fire protection roller shutter according to claim 11, characterized in that the guide rails (34) have an essentially U-shaped profile.

13. Fire protection roller shutter according to claim 12, characterized in that at least one leg (38) and preferably both legs of each U-shaped profile is / are provided on its inside with an elongated strip (40) of a material which foams in the event of a fire or swells to seal a space between the armor and the guide rail or between the profile elements (20) and the guide rail (34).

14. Fire protection roller shutter according to one of the preceding claims, characterized in that an outlet opening (42) of the box (10) for the tank (12) is provided with one and preferably two elongated strips (44) of a material which foams or swells in the event of a fire to seal a space between the tank and the box.

15. Fire protection roller shutter according to claim 14, characterized in that the material has sliding properties in the normal state of use.

16. Fire protection roller shutter according to one of the preceding claims, characterized in that the profile elements of the tank can be wound on a shaft made of steel, for example made of stainless steel, V2A steel or galvanized steel, arranged in the box.

17. Fire protection roller shutter according to one of the preceding claims, characterized in that the armor is anchored to the shaft by means of spring steel strips (30).

18. Fire protection roller shutter according to one of the preceding claims, characterized in that the profile elements have a curvature.

19. Fire protection roller shutter according to one of the preceding claims, characterized in that an electric drive (48) is provided for winding and unwinding the tank.

20. Fire protection roller shutter according to claim 19, characterized in that the drive has an AC motor (48).

21. Fire protection roller shutter according to claim 19 or 20, characterized in that the drive is coupled to an emergency power supply (64).

22. Fire protection roller shutter according to claim 21, characterized in that the emergency power supply has a battery pack (64).

23. Fire protection roller shutter according to claim 22, characterized in that the battery pack is designed for a voltage of 24V.

24. Fire protection roller shutter according to claim 22 or 23, characterized in that a converter (66) is connected between the battery pack and the AC motor, which converts the direct current of the battery pack into alternating current.

25. Fire protection roller shutter according to one of claims 20 to 24, characterized in that the alternating current motor, the battery pack, the converter and / or a charger is or are arranged in the box.

26. Fire protection roller shutter according to one of the preceding claims 20 to 24, characterized in that the battery pack, the converter and / or a charger are accommodated in a walled-in, fire-protected box.

27. Fire protection roller shutter according to one of claims 19 to 26, characterized in that the drive can be activated by a smoke and / or fire detection system (54) in order to automatically close an opening through the armor.

28. Fire protection roller shutter according to one of the preceding claims, characterized in that an emergency switch (62), in particular manually operable, is provided outside the roller shutter, by means of which a closing movement of the armor (12) can be stopped and / or reversed.

29. Fire protection roller shutter according to claim 28, characterized in that a power supply to the drive can be at least temporarily interrupted by actuating the emergency switch (62).

30. Fire protection roller shutter according to claim 28 or 29, characterized in that a circuit switched between the power supply and the drive can be activated by actuating the emergency switch (62), which at least temporarily causes a reversal of the drive direction.

31. Fire protection roller shutter according to one of claims 28 to 30, characterized in that the closing movement of the tank can be continued by actuating the same or another emergency switch again.

32. Fire protection roller shutter according to one of claims 27 to 31, characterized in that a timer is provided which, after a preset time period after an interruption or reversal of the closing movement, restores the power supply to the drive or adjusts the drive direction so that the closing movement of the tank is continued.

33. Fire protection roller shutter according to one of the preceding claims, characterized in that the profile elements (20) sit on one another free of light slots in the developed state.

34. Fire protection roller shutter according to one of the preceding claims 1 to 9 and 11 to 33, characterized in that the profile elements (20) are filled with a fire-retardant or fire-resistant material in liquid or viscous form, which then to a cross-section or Volume of the respective profile element filling material hardens.

35. Fire protection roller shutter according to claim 34, characterized in that the material is a mixture of cement, water and calcium sulfate (gypsum), optionally together with reinforcing fibers or filaments and other filler material.

36. Fire protection roller shutter according to one of claims 34 or 35, characterized in that the material contains water in free form or chemically bound form in the hardened state.

37. Fire protection roller shutter according to one of claims 34 to 36, characterized in that the profile elements are provided with perforations on the convex side.

38. Fire protection roller shutter system, characterized in that two fire protection roller shutters are provided according to one of the preceding claims, which are arranged spaced apart on the respective sides of a hatch or a door opening.

39. Fire protection roller shutter system according to claim 38, characterized in that the distance between the fire protection roller shutters in the area of the hatch or the door opening is 25 to 30 cm.

40. Fire protection roller shutter system according to claim 38 or 39, characterized in that the fire protection roller shutters are arranged mirror-symmetrically to one another, the roller shutter boxes being arranged on the side of the masonry above the hatch or the door opening and the profile elements of the two roller shutters with their concave sides facing outwards from the Pass the hatch or door opening away.

41. A method for producing a fire protection roller shutter consisting of a plurality of hollow profile elements made of steel which can be attached to one another in a hinge-like manner, characterized in that the profile elements with a flowable mixture of cement, water and calcium sulfate (gypsum), optionally together with silicates, reinforcing fibers or filaments and further filler material be filled.

42. The method according to claim 1, characterized in that the profile elements are filled by means of a tube which is first inserted deep into the cavity of the respective profile element and when the profile element is filled, the tube is increasingly pulled out of the profile element.

43. The method according to claim 41 or 42, characterized in that the profile elements are provided at one end before filling with a metal cap or steel cap or are filled from both ends and after filling at one or both ends with a metal cap or steel cap be provided.

44. The method according to any one of claims 41 to 43, characterized in that after the filling, the profile elements are stored for curing and / or drying the filling.