EP4234872A2 - Multi-chamber hollow profiled element and fire protection structure containing the multi-chamber hollow profiled element - Google Patents

Abstract

The invention relates to a multi-chamber hollow profile with an outer wall (10a) which has at least one fire protection material chamber (12) with an outer wall (10a) which is completely or partially filled with one or more fire protection materials (20, 20a, 20b) and at least one receiving Hollow chamber (14) for use in fire protection structures, in particular in fire resistant frames for fire protection elements, for example as an insert or insert in a fire resistant glazing frame (22). It is proposed that the at least one receiving hollow chamber (14): - is arranged inside the multi-chamber hollow profile (10), - is completely or predominantly surrounded by the at least one fire protection material chamber (12); - has at least one end face which is in the area the outer wall (10a) or the end faces of the multi-chamber hollow profile (10) is arranged so that the receiving hollow chamber (14) is accessible from outside the multi-chamber hollow profile (10); and is separated from the at least one fire protection material chamber (12) which completely or predominantly surrounds it by at least one wall (14a) which is at least largely impermeable to the fire protection material (20, 20a, 20b).

Description

field of invention

The invention relates to a multi-chamber hollow profile according to the preamble of claim 1, a fire protection structure, in particular a frame for fire-resistant glazing, in which this multi-chamber hollow profile is inserted, a method for producing the multi-chamber hollow profile, and a use of the multi-chamber hollow profile.

Technical background

It is known to produce fire-resistant frames, such as glazing frames, from a supporting frame profile and a separate hollow profile, which is inserted as a separate component into a cavity of the supporting frame profile that is suitable for receiving the hollow profile. The supporting frame profile and the hollow profile each have cavities which typically extend in the longitudinal direction of the frame profile. These cavities can have different functions. For example, they can be filled with a fire protection material. The firestop material is typically introduced into at least one cavity as a preformed building block, such as a rigid insert or insert. Other cavities that are present can be used, for example, as cable ducts or to accommodate fittings or the like. The following description refers to load-bearing fire-resistant frames for fire protection elements, such as frames for fire protection glazing, when frames, fire protection frames, glazing frames, frame profiles or frame profile parts are mentioned. The invention also relates generally to multi-chamber hollow sections for incorporation into fire protection structures such as fire protection windows, doors or walls.

A standard construction of a load-bearing frame section comprises two frame sections and bolts which firmly connect the two frame sections together in the finished frame. If a hollow profile filled with a fire protection material is to be used in such a construction made of two frame profile parts and connecting bolts, passage bores for the passage of the bolts are usually produced in the hollow profile filled with fire protection material.

EP 1 681 430 A2 discloses a composite profile, for example for a window frame, which comprises two metal profile parts mounted at a fixed distance from one another and connected to one another by bolts arranged perpendicular to the metal profile parts. A fire-resistant and/or heat-resistant insulating material made of alum or glass wool is arranged between the metal profile parts. The insulation material is protected from environmental influences by an enclosing jacket and side covers. A further external cavity is formed between the jacket and the cover, which can serve, for example, as a cable duct or cavity for additional fire protection material. The bolts pass through the insulation material and require holes to be drilled in the jacket.

Out of EP 2 749 724 A1 a composite profile for fire doors and windows is known, the load-bearing frame profile has a central profile made of fiber-reinforced plastic, on the opposite sides of which metal support profiles are attached. Inner longitudinal chambers are provided within the profile made of fiber-reinforced plastic, in which fittings and/or corner connection angles and/or insert parts made of calcium silicate can be inserted.

DE10144551A1 discloses a fire protection element for constructing a framework on a building for holding a clampable component, such as fire protection glazing. A core profile serving as an anchor is surrounded by a heat-insulating filling compound, which is surrounded by a casing. The hollow chamber contained in some embodiments in the core profile does not extend to the outer surfaces of the casing enclosing the fire protection material in the form of a load-bearing box profile, but is always surrounded on all sides by the filling compound. The hollow chamber is not intended to hold any object.

WO 2003/023175 A1 discloses a frame profile with fire protection material filling. A hollow chamber for accommodating a locking bar of a locking mechanism or the like can be provided in the fire protection material filling ( 3 ). The fire protection material is filled directly into the frame and is therefore not an insert or a separate filling profile with its own jacket profile and fire protection material filling.

The composite profile according to EP 1 681 430 A2 has several disadvantages. Holes must be provided in the jacket for the passage of the bolts. In one embodiment, cutouts are produced directly in the insulating material, in which the cover is fastened, so that the insulating material acting as a fire protection material is not hermetically sealed at several points. The drilled holes and recesses can become brittle over time leakage of insulation material. Moving parts in the bores can cause mechanical abrasion of the unprotected insulation material. In the event of a fire, cooling water that is bound in a coolant in the insulation material can escape prematurely through the holes or recesses. This is disadvantageous for the cooling capacity of the insulation material. Finally, the hollow chamber formed between the jacket and the cover for accommodating cables is located in the composite profile according to FIG EP 1 681 430 A2 completely outside the insulation material, so that in the event of a fire, the cables are only insufficiently protected from the fire.

According to the composite profile EP 2 749 724 A1 the longitudinal chambers are provided in the supporting central frame profile. The fixed connection between the longitudinal chambers and the load-bearing profile has the disadvantage, among other things, that the type, size and arrangement of the chambers for the finished fire protection frame are completely defined. This system thus lacks the desired flexibility.

Summary of the Invention

The invention is based on the object of specifying a multi-chamber hollow profile in which fire protection material is better protected if cavities for accommodating mechanical connecting devices, fittings, cables or the like are provided in the fire protection material. The object of the present invention is also at least one hollow chamber of the multi-chamber hollow profile, which serves as a shaft for heat-sensitive components such as optical or electrical cables, electronic components such as sensors, rods, screws, connecting bolts, fittings, reinforcement inserts (e.g. burglar-resistant inserts made of polycarbonate) or the like To better protect against the heat of a fire by at least one fire protection material chamber. Finally, the invention is based on the object of specifying a multi-chamber hollow profile in which at least one hollow chamber for accommodating cables, sensors, connecting bolts, fittings, reinforcing inserts or the like (hereinafter: "hollow accommodating chamber"), and at least one hollow chamber filled with fire protection material ( hereinafter referred to as "fire protection material chamber") can be combined with one another as flexibly and as required.

• im Inneren des Mehrkammerhohlprofils angeordnet ist,
• innerhalb des Mehrkammerhohlprofils vollständig oder überwiegend von mindestens einer Brandschutzmaterialkammer umgeben ist, während wenigstens eine ihrer, vorzugsweise beide Stirnflächen im Bereich der Außenwand oder der Stirnseiten des Mehrkammerhohlprofils angeordnet und von außerhalb des Mehrkammerhohlprofils zugänglich ist/sind,
• durch wenigstens eine für das Brandschutzmaterial wenigstens weitgehend undurchlässige Wand von der mindestens einen sie umgebenden Brandschutzmaterialkammer getrennt ist.

The subject of the invention is therefore a multi-chamber hollow profile with an outer wall, which comprises at least one fire protection material chamber and at least one receiving hollow chamber, and for use in fire protection structures such as fire protection walls, fire protection windows or fire protection doors, in particular in fire-resistant frames for fire protection elements, for example as insert or insert in fire-resistant glazing frames. The multi-chamber hollow profile according to the invention is characterized in that the at least one receiving hollow chamber:

• is arranged inside the multi-chamber hollow profile,
• within the multi-chamber hollow profile is completely or predominantly surrounded by at least one fire protection material chamber, while at least one of its, preferably both, end faces is/are arranged in the area of the outer wall or the end faces of the multi-chamber hollow profile and is/are accessible from outside the multi-chamber hollow profile,
• is separated from the at least one fire protection material chamber surrounding it by at least one wall which is at least largely impermeable to the fire protection material.

The wall of the hollow receiving chamber is intended in particular to prevent particles of the fire protection material from a fire protection material chamber from penetrating into the hollow receiving chamber, and in a preferred embodiment also the ingress of liquids such as water, in particular also in the form of steam, from the fire protection material. The primary function of the wall of the receiving hollow chamber is therefore to permanently at least largely exclude the penetration of fire protection material from a fire protection material chamber into the receiving hollow chamber during the production of the multi-chamber hollow profile, during its handling and after its intended installation in a fire protection structure under normal conditions, see above that - apart from the case of fire - at most insignificant amounts of the fire protection material can get into the receiving cavity.

The following materials are particularly suitable for the wall of the hollow receiving chamber: plastics (both thermosets and thermoplastics), preferably from the substance groups of polyamides, polyimides, polyetherimides, polybenzimidazoles, polyaryletherketones, polyetheretherketones (PEEK), silicones, fluoropolymers, silicone resins, acrylonitrile -Butadiene-styrene (ABS), styrene-acrylonitrile (SAN), acrylester-styrene-acrylonitrile (ASA), PTFE, synthetic resins, phenoplasts, polycarbonates, polyacrylates, rubbers, in particular ethylene-propylene-diene rubber, polylactates, PMMA, PET , PVC, TPU, polyethylene, polypropylene, polystyrene; also fiber-reinforced plastics, in particular glass-fiber and/or carbon-reinforced plastics (GRP, CFRP), preferably based on epoxy resins, melamine resins, acrylate resins, polyester resins; metals; organic materials such as cellulosic based materials such as cardboard or wood; Textiles, woven fabrics, knitted fabrics, non-woven fabrics made from fiber materials.

The multi-chamber hollow profile according to the invention comprises several hollow chambers. At least one of these hollow chambers is filled with fire protection material and thus forms at least one fire protection material chamber. Fire protection material chambers can be partially filled with fire protection material, e.g. B. only on the inside of their chamber walls or by inserting an undersized insert, or they can be substantially completely filled with fire protection material. In addition, the multi-chamber hollow profile according to the invention comprises at least one hollow chamber designed to accommodate components such as optical or electrical cables, electronic components such as sensors, rods, screws, bolts, reinforcing inserts or the like. Finally, the multi-chamber hollow profile can optionally have at least one further hollow chamber that is neither filled with fire protection material nor intended to accommodate components such as sensors, fittings, cables, bolts, reinforcement inserts or the like (hereinafter "empty chambers").

The receiving hollow chambers, fire protection material chambers or empty chambers can have an elongated or a flat shape, for example. Typically, the chambers for glazing frames are elongated chambers with significantly larger longitudinal than transverse dimensions. When the chambers of the typical glazing frame design are elongate, they have one or more longitudinal walls and at the ends thereof one or more faces or end walls. The longitudinal walls in this case run parallel to the longitudinal axis of the chambers and the glazing frame, and the end walls or end faces are arranged transversely or obliquely to this longitudinal axis. If the multi-chamber hollow profile is to be introduced into flat fire protection structures such as fire protection doors or fire walls, the multi-chamber hollow profile is also usually flat with a relatively small thickness compared to the external dimensions (length/width). In this case, one or more of the chambers can also have a flat extension.

In this embodiment, the walls of the receiving hollow chamber(s) run essentially parallel to the longitudinal walls of the fire protection material chamber(s).

If, on the other hand, receiving hollow chambers are provided, for example for receiving bolts for connecting the separate profile parts of a glazing frame, the walls of the receiving hollow chambers are arranged essentially perpendicular to the longitudinal axis of the multi-chamber hollow profile and thus essentially perpendicular to the longitudinal walls of the fire protection material chamber(s). Expressed differently in this case, the main axis of the receiving hollow chamber(s) runs perpendicularly to the main axis of the fire protection material chamber(s). At the same time, the end faces of the receiving hollow chamber(s) are rotated 90 degrees relative to the end faces or end walls of the fire protection material chamber(s) and at least one of them, preferably both end faces, are arranged in the area of the outer wall of the multi-chamber hollow profile running along the profile.

The invention is used for both orientations of receiving hollow chambers, namely essentially parallel or perpendicular to the fire protection material chambers, as well as intermediate forms.

The at least one receiving hollow chamber preferably passes through the multi-chamber hollow profile from an area of its outer wall or an end face to an opposite area of its outer wall or an end face, so that a component can be pushed through the receiving hollow chamber of the multi-chamber hollow profile or into it from two sides or can be drawn. However, it is within the scope of the invention if a receiving hollow chamber is designed in the manner of a blind hole and is only accessible from an outer wall or end face of the multi-chamber hollow profile. This can be useful if small, heat-sensitive components that require little space are to be accommodated in the receiving hollow chamber or if bolts or other mechanical fixing means only penetrate into the multi-chamber hollow profile for fixing and are not intended to penetrate it completely.

In one exemplary embodiment, the fire protection material chambers are closed at their end faces located in the area of the outer wall or an end face of the multi-chamber hollow profile, for example with openable and closable covers. This is advantageous in order to maximize the cooling effect in the event of a fire. However, they can also be open at their ends.

In one exemplary embodiment, one or more seals or other indentations or cross-sectional constrictions that reduce the flow cross-section are present in a hollow receiving chamber. Alternatively or additionally, the inner surface of the wall of a receiving cavity can be provided with a three-dimensional structure such as grooves, ribs or a grain, generally expressed with a relief-like structure or a structure with macroscopic unevenness. This is particularly advantageous when hollow receiving chambers run vertically in the installation situation, since this increases the flow through the hollow receiving chambers optimized with hot gases (chimney effect), in particular can be throttled.

It is within the scope of the invention to leave fire protection material chambers open on at least one of their end faces. However, fire protection material chambers are preferably completely encased with a wall. The main advantage of completely encasing the fire protection material in the fire protection material chambers, including their front sides, is that there is then no exchange of substances between the interior of these chambers and their surroundings.

For the walls of fire protection material chambers that are located inside the multi-chamber hollow profile, a large number of materials are basically suitable, which separate the fire protection material in a fire protection material chamber from other hollow chambers of the multi-chamber hollow profile, including in particular the materials listed above that are suitable for the wall the at least one receiving cavity are suitable.

The outer wall of the multi-chamber hollow profile has the function of mechanically protecting and stabilizing the at least one fire protection material chamber and the at least one receiving hollow chamber and protecting it against harmful influences from the outside, preferably for as long as possible after the start of a fire. The outer wall can be part of the wall of at least one fire protection material chamber, it can also form a small part of the wall of at least one receiving hollow chamber. In this respect, the requirements formulated for the walls in question also apply as minimum requirements where these hollow chamber walls are part of the outer wall of the multi-chamber hollow profile.

Irrespective of this, the outer wall of the multi-chamber hollow profile is preferably essentially impermeable to fire protection material, in particular in its hardened state, and to its components thanks to a suitable choice of material and thickness, and this preferably remains up to a temperature of the outer wall of at least 70° C., in particular up to at least 100 °C This ensures that the fire protection material encased by the outer wall only develops its function, such as the release and evaporation of cooling water, at the high temperatures of a fire and not at temperatures that are elevated for other reasons, for example in strong sunlight. As desired, the full cooling capacity of the fire protection material is only provided in the event of a fire. By encasing the interior of the multi-chamber hollow profile with an outer wall material that is impermeable to the encased fire protection material, e.g organic polymers, in particular plastics (mainly GRP or CRP), cardboard, or metals, mechanical abrasion of the fire protection material and thus contamination of other components is also prevented. Conversely, no harmful foreign substances can get into the multi-chamber hollow profile and in particular into its fire protection material chamber(s) from the outside. For this at least largely complete insulation of the interior of the fire protection chamber(s), their encasing by the outer wall must be essentially complete. The outer wall, which is impermeable to fire protection material, should therefore also be free of larger pores.

On the other hand, less thermally stable materials can also be used for the walls of hollow receiving chambers, which can also be permeable to components of the fire protection material or the foamed fire protection material. If a porous, mesh-like or net-like material is used for the wall of a receiving hollow chamber, components of the fire protection material, such as water vapor in particular, can penetrate the wall in the event of a fire. With sufficiently small pores, a small size of the mesh and/or small net spacing, at least mechanical protection can be guaranteed, since particles of the hardened fire protection material can neither escape from a fire protection material chamber surrounding the hollow receiving chamber nor can solid objects penetrate into it. This is of particular advantage in the case of receiving hollow chambers running transversely to fire protection material chambers, which are intended, for example, for receiving bolts.

In the event of a fire, in this embodiment, gaseous decomposition products occurring in the fire protection material can escape through the porous wall of a hollow receiving chamber and from there into the environment in a controlled manner. At the same time, coolants, preferably steam, from the fire protection material from at least one fire protection material chamber surrounding the hollow receiving chamber can cool, for example, metal connecting bolts of the fire protection frame located in the hollow receiving space, into which the multi-chamber hollow profile is inserted, and thereby improve the fire resistance of the frame.

Another significant advantage of the multi-chamber hollow profile according to the invention is that receiving hollow chambers, which are used as cable ducts, are completely or predominantly surrounded by fire protection material in the area of their walls. The cables are particularly well protected against the effects of the heat of a fire.

Cables or other components introduced into the receiving hollow chamber can be poured, foamed or fixed there with additional material, in particular fire protection material. The material used advantageously has cooling and/or insulating properties.

A further advantage of the multi-chamber hollow profile, particularly in the case of hollow receiving chambers arranged in the longitudinal direction, is its modular structure, since the hollow chambers to be used as hollow receiving chambers and fire protection material chambers can be selected application-specifically and thus different variants of the multi-chamber hollow profile can be provided as required. All hollow chambers can first be joined together with empty cavities to form a multi-chamber hollow profile, and some of these are then filled with fire protection material, whereby fire protection material chambers are created from the filled hollow chambers, while the remaining unfilled hollow chambers are available as receiving hollow chambers or empty chambers. However, fire protection material chambers can also be produced in advance and then combined with at least one receiving hollow chamber. Simple designs, such as cylinders or cuboid profiles, can be put together particularly flexibly and adapted to different fire protection structures such as frames. Furthermore, it is advantageously possible to produce a one-piece hollow chamber system (with hollow chambers in the longitudinal direction, but in particular with receiving hollow chambers oriented transversely thereto for the passage of bolts) by polymer processing methods and then to fill individual hollow chambers with fire protection material in the one-piece multi-chamber hollow profile and one of the hollow chambers provide as a receiving cavity.

This modular design makes it possible to set different fire protection classes in a targeted manner by varying the proportion of fire protection material and the arrangement of the fire protection material.

According to a preferred embodiment according to the invention, receiving hollow chambers can remain open on one or both sides for receiving components such as cables, or can be opened and then, if necessary, closed with adapted covers.

Fire protection material chambers are open on their front sides for filling or can be opened and are then either closed with covers in the filled state / after the fire protection material has hardened in situ or remain so permanently open. In the case of hollow receiving chambers arranged transversely to the main axis or surface plane of the multi-chamber hollow profile, covers are not always required, particularly if the hollow receiving chambers are used for inserting or passing through bolts.

In a preferred arrangement, the walls of the receiving hollow chamber(s) and the fire protection material chamber(s) extend parallel to the main axis of the multi-chamber hollow profile, and the end faces of the receiving hollow chamber(s) run essentially parallel to the end faces of the fire protection material chamber(s). This configuration corresponds to the essential basic arrangement according to the invention, in which the at least one receiving hollow chamber and the at least one fire protection material chamber run parallel to the main axis of the multi-chamber hollow profile and to the main axis of the fire protection frame into which the hollow profile is inserted. The at least one receiving hollow chamber is preferably open at both of its end faces, so that cables can be pulled through which are protected by surrounding fire protection material within the receiving hollow chamber with its wall being interposed.

In another arrangement according to the invention, the at least one receiving hollow chamber extends perpendicularly, transversely or obliquely to the main axis of the multi-chamber hollow profile and the at least one fire protection material chamber extends parallel to this main axis. In this case, the end faces of the fire protection material chamber(s) are arranged perpendicularly, transversely or obliquely to the main axis of the multi-chamber hollow profile, and at least one end face of the at least one receiving hollow chamber lies in the area of the outer wall of the multi-chamber hollow profile. This configuration is suitable for a situation in which a multi-chamber hollow profile must have at least one passage transversely to the longitudinal axis in order, for example, to be able to provide at least one connecting bolt between two frame profile parts, between which the multi-chamber hollow profile according to the invention is arranged, or at least one fixing bolt which is attached to a Frame part is attached to be able to introduce at least one receiving cavity designed as a blind hole. In this case, the multi-chamber hollow profile is preferably produced in one or more parts by a polymer processing method such as injection molding, and because of the increased complexity of the inner contour of the cavity of the fire protection material chamber(s), it is preferably filled with liquid precursors of fire protection materials, which harden in situ in the at least one fire protection material chamber . However, it is also possible to penetrate transversely into at least one receiving hollow chamber Fire protection material chamber to insert one or more prefabricated inserts made of hardened fire protection material past the at least one receiving hollow chamber, with remaining cavities either remaining unfilled or being partially or completely filled with modeling clay or liquid precursor material of fire protection material.

In the preferred embodiment according to the invention, in which the receiving hollow chamber(s) and fire protection agent chamber(s) are arranged essentially parallel to one another and essentially parallel to the main axis of the multi-chamber hollow profile, the essential technical details of the invention can be recognized and described particularly well in the cross-sectional view become. In the cross-sectional view perpendicular to the main axis of the multi-chamber hollow profile, the profile has an outer wall and one or more inner walls. The outer wall is located on the periphery of the multi-chamber hollow profile and delimits it from the environment, while inner walls are arranged inside the profile. Walls between adjacent fire protection material chambers and walls between adjacent receiving hollow chambers and walls between fire protection material chambers and receiving hollow chambers can either be formed by common walls, especially if the multi-chamber hollow profile was produced in one piece by injection molding, or two or more walls can adjoin one another here if the individual hollow chambers are produced separately from one another and then joined together to form a multi-chamber hollow profile. Preferably, the walls of receiving hollow chambers lie completely within a multi-chamber hollow profile and do not form part of its outer wall.

In order to achieve the goals of the invention, in particular improved protection of cables or other heat-sensitive components in the event of fire, the hollow chamber(s) directly encased by the outer wall of the multi-chamber hollow profile is/are each partially or completely filled with fire protection material and thus serves/serve as fire protection material chamber(s). As a result, the at least one internal hollow chamber, e.g. for accommodating cables or other heat-sensitive components, can be particularly well protected in the event of a fire, since it is (are) completely surrounded in cross section by the external fire protection material chamber(s).

If receiving hollow chambers for the passage of bolts are rotated by 90 degrees to the fire protection material chambers, a similar almost complete encasing of the receiving hollow chambers with fire protection material results. The walls of transversely arranged receiving cavities and Fire protection material chambers can be made in one piece in a structural unit. However, it is possible to insert separately manufactured (elongated) hollow bodies (e.g. cylinders, rectangular profiles or polyhedron profiles) into passage openings of the multi-chamber hollow profile or at least one fire protection material chamber and to fix them therein, which then form the walls of the receiving hollow chambers in the finished multi-chamber hollow profile. In this respect, there is no fundamental difference in design and structure between the parallel arrangement and the vertical arrangement of receiving hollow chambers relative to fire protection material chambers.

The contour of the receiving hollow chambers and fire protection material chambers is essentially defined on the outside by the desired or required shape of the multi-chamber hollow profile, which is to be used as an insert or insert in a fire protection structure, in particular in a fire protection frame (e.g. glazing frame). For this purpose, the outer wall of the multi-chamber hollow profile preferably has a polygonal, in particular triangular, quadrangular, in particular rectangular or square, pentagonal, hexagonal, octagonal cross-section. Combinations of geometries are also possible. The walls of the receiving hollow chambers and fire protection material chambers and any empty chambers preferably also have a polygonal, in particular triangular, quadrangular, in particular rectangular or square, pentagonal, hexagonal, octagonal cross-section. They can also have a circular or elliptical cross-section. Combinations of geometries are also possible for this.

The interaction of the contours of receiving hollow chambers and fire protection material chambers with the contour of the outer wall of the multi-chamber hollow profile is exemplified by the schematic drawings in the Figures 1 to 12 illustrated.

In the cross-sectional view, fire protection material chambers and receiving hollow chambers and, if necessary, empty chambers can completely fill the multi-chamber hollow profile. However, there is also the possibility that the various chambers are not tightly packed and space-filling, but are joined together leaving cavities between the chambers. The cavities remaining in these cases between the walls of adjacent chambers can either remain free and unused when installed or, if necessary, can also be used as cable ducts or the like.

It is within the scope of the invention if receiving hollow chambers are not completely but only predominantly surrounded by fire protection material chambers. According to the invention, at least a small part of the wall of a receiving hollow chamber can form part of the outer wall of the multi-chamber hollow profile as long as the majority of the wall of the receiving hollow chamber is adjacent to fire protection material chambers or simultaneously forms their wall. This technical structure is exemplified in the Figures 6, 6a, 6b illustrated, in which a rectangular cross-section ( 6 ) or circular ( Figures 6a, 6b ) Recording hollow chamber is located on the outer edge of the multi-chamber hollow profile in the cross-sectional view, but on three of four sides ( 6 ) or over (almost) the entire extent ( Figures 6a, 6b ) is adjacent to at least one fire protection material chamber.

According to the invention, the outer wall of the multi-chamber hollow profile can have recesses, indentations or bulges, claws, hooks, clips or similar fastening aids that facilitate the installation of the profile in a frame or more generally a fire protection structure or for fastening frame parts or more generally parts of a fire protection structure to the multi-chamber hollow profile or vice versa can serve.

The multi-chamber hollow profile according to the invention can be manufactured or put together in different ways. For many applications it is advantageous to form or produce the unfilled multi-chamber hollow profile in one piece from a single wall material. All known production techniques, in particular from the field of polymer technology, can be used for this. The extrusion process or the injection molding process are given as examples. The modern technology available is the production of particularly complex components using 3D printers.

As already explained above, receiving hollow chambers running transversely to the longitudinal extent of a multi-chamber hollow profile for accommodating cables or fastening elements such as bolts or screws can also be made before the fire protection material is filled into the fire protection material chamber(s) by inserting pipe sections with walls that are impermeable to the fire protection material (the can also be designed porous, net-like or mesh-like) in suitable bores or openings in opposite areas of the outer wall and, if necessary, in inner walls within the multi-chamber hollow profile. These pieces of pipe are advantageously made of plastic or metal and can optionally protrude beyond the outer walls of the multi-chamber hollow profile. That enables one Connection to other frame parts or more generally to parts of a fire protection structure, for example by gluing, welding and/or clipping.

This technique is particularly useful for elongated or flat multi-chamber hollow profiles with receiving hollow chambers arranged transversely to the longitudinal or flat extension. For many other applications with simply shaped receiving hollow chambers and fire protection material chambers, these hollow chambers are manufactured individually and put together for the desired multi-chamber hollow profile. In this case, there is an opportunity to connect different materials together. For example, the inner walls can be made of polymers, while the outer wall of the multi-chamber hollow profile is made of metal.

The fire protection material chambers of the multi-chamber hollow profile are completely or partially filled with a fire protection material. If the filling is only partial, it can be the inner lining of a hollow chamber with solid or liquid fire protection material. The fire protection material can be solid and dimensionally stable before it is introduced into the multi-chamber hollow profile according to the invention. It is then introduced into a hollow chamber in the form of inserts or inserts, for example in the form of a cuboid, a polyhedron or a cylindrical rod, which thereby becomes the fire protection material chamber.

Alternatively, dimensionally unstable fire protection materials or precursors thereof can be used, the advantage of which is the greater flexibility of their shape and thus their ability to adapt to complex-shaped cavities or narrow gaps. These are, for example, kneadable precursor materials of a fire protection material that harden in the fire protection material chambers to form the fire protection material, and powdery or liquid precursor materials of a fire protection material that are distributed particularly well in the fire protection material chambers after filling and harden in situ to form the fire protection material.

In the present invention, inter alia, the in DE 10 2012 220 176 A1 disclosed fire protection materials with at least two different water glasses and another organic substance as a CO ₂ donor to improve the intumescent behavior. Likewise, those in the U.S. 2014/0145104 A1 disclosed fire protection materials are used with lightweight, insulating film materials and water-absorbing fillers and fibers and / or thixotropic agents. Also usable are liquid fire protection materials based on water glass, as in the PL 402 681 A1 described become. This list is not exhaustive. Rather, a variety of different fire protection materials can be used according to the invention, especially those in the WO 2015/079265 A2 are described by the applicant.

In particular, materials with insulating or cooling fire protection properties can be filled into the fire protection material chambers. In addition, they can also have intumescent properties when using an appropriate fire protection material.

If intumescent fire protection materials are used, it is advantageous if the wall of the at least one receiving hollow chamber is permeable to water vapor or liquids, in particular porous, at least where it adjoins at least one fire protection material chamber, so that in the event of a fire, foamed fire protection material can get inside the receiving Hollow chamber can reach and provides additional insulation there.

The multi-chamber hollow profile according to the invention can have several fire protection material chambers. According to the invention, the several fire protection material chambers can be filled with different fire protection materials which differ from one another in terms of their chemical composition or their physical properties. Different chemical compositions can result in a fire protection material having a cooling or insulating effect. Physically, the fire protection materials can differ in their aggregate state from fine-grained powder to gel-like to a one-piece three-dimensional solid, in the grain size in the powder or in the structure of the three-dimensional solid. A porous structure is also possible.

The invention also relates to a method for producing a multi-chamber hollow profile, which consists in producing a multi-chamber profile according to the invention from at least two hollow chambers and filling fire protection material into at least one hollow chamber, in particular mixing precursor materials of a fire protection material from a multi-component system to obtain a liquid mixture and pouring the liquid mixture into fill in at least one hollow chamber and then allow it to harden therein, after which the finished multi-chamber hollow profile has at least one receiving hollow chamber and at least one fire protection material chamber.

Fig. 1 a

ist eine schematische Ansicht eines Mehrkammerhohlprofils nach einem ersten Ausführungsbeispiel der Erfindung;

Fig. 1 b

ist eine schematische Ansicht eines Mehrkammerhohlprofils nach einem zweiten Ausführungsbeispiel der Erfindung;

Fig. 2

ist eine schematische Ansicht eines Mehrkammerhohlprofils nach einem dritten Ausführungsbeispiel der Erfindung in einem Zustand vor und nach dem Befüllen mit Brandschutzmaterial sowie vor und nach dem Einführen eines Kabels in die i innenliegende Aufnahme-Hohlkammer;

Fig. 3

ist eine schematische Ansicht eines erfindungsgemäßen Mehrkammerhohlprofils nach einem vierten Ausführungsbeispiel der Erfindung in einem Zustand vor und nach dem Befüllen mit Brandschutzmaterial sowie vor und nach dem Einführen eines Kabels in die innenliegende Aufnahme- Hohlkammer;

Fig. 4

ist eine schematische Ansicht eines erfindungsgemäßen Mehrkammerhohlprofils nach einem fünften Ausführungsbeispiel der Erfindung, vor und nach dem Befüllen mit Brandschutzmaterial sowie vor und nach dem Einführen mehrerer Kabel in die innenliegende Aufnahme-Hohlkammer;

Fig. 5

ist eine schematische Darstellung eines Verfahrens zur Herstellung eines erfindungsgemäßen Mehrkammerhohlprofils nach einem sechsten Ausführungsbeispiel der Erfindung;

Fig. 5a und 5b

sind schematische Darstellungen eines Verfahrens zur Herstellung eines erfindungsgemäßen Mehrkammerhohlprofils nach zwei verschiedenen Varianten des sechsten Ausführungsbeispiels der Erfindung;

Fig. 6

ist eine schematische Darstellung eines erfindungsgemäßen Mehrkammerhohlprofils nach einem siebten Ausführungsbeispiel der Erfindung;

Fig. 6a und 6b

sind schematische Darstellungen eines erfindungsgemäßen Mehrkammerhohlprofils nach zwei verschiedenen Varianten des siebten Ausführungsbeispiels der Erfindung;

Fig. 7

ist eine schematische Darstellung von erfindungsgemäßen Mehrkammerhohlprofilen nach drei weiteren Ausführungsbeispielen der Erfindung jeweils in einem Zustand vor und nach dem Befüllen mit Brandschutzmaterial;

Fig. 8

ist eine schematische Darstellung eines Verfahrens zur Herstellung eines erfindungsgemäßen Mehrkammerhohlprofils nach einem achten Ausführungsbeispiel der Erfindung;

Fig. 9

ist eine schematische Darstellung eines Verfahrens zur Herstellung eines erfindungsgemäßen Mehrkammerhohlprofils nach einem neunten Ausführungsbeispiel der Erfindung;

Fig. 9a und 9b

sind schematische Darstellungen des Endergebnisses eines Verfahrens zur Herstellung eines erfindungsgemäßen Mehrkammerhohlprofils nach zwei verschiedenen Varianten des neunten Ausführungsbeispiels der Erfindung;

Fig. 10

ist eine schematische Darstellung von erfindungsgemäßen Mehrkammerhohlprofilen nach weiteren Ausführungsbeispielen der Erfindung;

Fig. 11

illustriert schematisch ein weiteres Herstellungsverfahren eines erfindungsgemäßen Mehrkammerhohlprofils;

Fig. 12

illustriert eine Variante des Herstellungsverfahrens gemäß Fig. 11;

Fig. 13

illustriert schematisch ein Fensterrahmenprofil mit einem eingeschobenen erfindungsgemäßen Mehrkammerhohlprofil;

Fig. 14

illustriert schematisch ein Mehrkammerhohlprofil mit winkelförmigem (L-förmigem) Querschnitt; und

Fig. 15

zeigt ein zwei verbundene Hohlprofile umfassenden Fensterrahmenprofil mit in einen Aufnahmeraum zwischen den Hohlprofilen eingelegtem Mehrkammerhohlprofil.

The invention is explained in more detail below using exemplary embodiments which are illustrated in the figures.

1a

is a schematic view of a multi-chamber hollow profile according to a first embodiment of the invention;

Figure 1b

is a schematic view of a multi-chamber hollow profile according to a second embodiment of the invention;

2

is a schematic view of a multi-chamber hollow profile according to a third embodiment of the invention in a state before and after filling with fire protection material and before and after inserting a cable into the i internal receiving hollow chamber;

3

is a schematic view of a multi-chamber hollow profile according to the invention according to a fourth embodiment of the invention in a state before and after filling with fire protection material and before and after inserting a cable into the internal receiving hollow chamber;

4

is a schematic view of a multi-chamber hollow profile according to the invention according to a fifth embodiment of the invention, before and after filling with fire protection material and before and after inserting several cables into the internal receiving hollow chamber;

figure 5

is a schematic representation of a method for producing a multi-chamber hollow profile according to the invention according to a sixth embodiment of the invention;

Figures 5a and 5b

are schematic representations of a method for producing a multi-chamber hollow profile according to the invention according to two different variants of the sixth embodiment of the invention;

6

is a schematic representation of a multi-chamber hollow profile according to the invention according to a seventh embodiment of the invention;

Figures 6a and 6b

are schematic representations of a multi-chamber hollow profile according to the invention according to two different variants of the seventh embodiment of the invention;

7

is a schematic representation of multi-chamber hollow profiles according to the invention according to three further exemplary embodiments of the invention, each in a state before and after filling with fire protection material;

8

is a schematic representation of a method for producing a multi-chamber hollow profile according to the invention according to an eighth embodiment of the invention;

9

is a schematic representation of a method for producing a multi-chamber hollow profile according to the invention according to a ninth embodiment of the invention;

Figures 9a and 9b

are schematic representations of the end result of a method for producing a multi-chamber hollow profile according to the invention according to two different variants of the ninth embodiment of the invention;

10

is a schematic representation of multi-chamber hollow profiles according to the invention according to further exemplary embodiments of the invention;

11

schematically illustrates another manufacturing method of a multi-chamber hollow profile according to the invention;

12

illustrates a variant of the manufacturing process according to FIG 11 ;

13

schematically illustrates a window frame profile with an inserted multi-chamber hollow profile according to the invention;

14

Fig. 12 schematically illustrates a multi-chamber hollow profile with an angular (L-shaped) cross-section; and

15

shows a window frame profile comprising two connected hollow profiles with a multi-chamber hollow profile inserted into a receiving space between the hollow profiles.

exemplary embodiments

1 a and 1b show the two essential basic configurations of the multi-chamber hollow profile 10 according to the invention.

Fig. 1a shows an end face of a multi-chamber hollow profile 10 according to the invention with a fire protection material chamber 12 that is rectangular in cross section and is completely filled with fire protection material 20, inside which a receiving hollow chamber 14 is arranged that extends parallel to the fire protection material chamber 12 and is completely surrounded by it in the longitudinal direction. The walls 10a, 14a of the two hollow chambers 12, 14 run parallel to one another. The outer wall 10a of the fire protection material chamber 12 simultaneously forms the outer wall 10a of the multi-chamber hollow profile 10. It extends parallel to the main axis of a glazing frame into which the multi-chamber hollow profile 10 is to be inserted (see 13 ). The inner wall 14a of the fire protection material chamber 12 forms at the same time Wall 14a of the receiving hollow chamber 14. The end faces of both hollow chambers 12, 14 and thus of the multi-chamber hollow profile 10 are in the same plane and perpendicular to the main axis. Cables, for example, can be routed through the internal receiving cavity 14 (see Fig. Figures 2 - 4 ).

The other figures each show further exemplary embodiments of the invention, with the description primarily relating to differences from the respective preceding exemplary embodiments and the same reference symbols being used for features which have the same or similar effects. Fire protection material 20 is represented in each case by hatching with a diamond.

Fig. 1B shows an embodiment in which three receiving hollow chambers 14 with a circular cross section are located completely within a cuboid fire protection material chamber 12 . In this embodiment, the main axis of the three receiving hollow chambers 14 is rotated through 90° with respect to the main axis of the fire protection material chamber 12 . The front end faces of the receiving hollow chambers 14 are located within the in Fig. 1B Visible front area of the wall 10a of the fire protection material chamber 12, which at the same time as in 1 a forms the outer wall 10a of the multi-chamber hollow profile 10 . In the exemplary embodiment, the receiving hollow chambers 14 extend to the rear of the outer wall 10a of the multi-chamber hollow profile 10 (in Figure 1b not visible). This embodiment is suitable for accommodating in its receiving hollow chambers 14 bolts for connecting two frame profile parts, between which the multi-chamber hollow profile 10 is inserted.

The walls 14a of the hollow receiving chambers 14, which are impermeable to fire protection material 20, prevent fire protection material 20 from penetrating from the fire protection material chamber 12 into the hollow receiving chambers 14.

In an alternative embodiment, the receiving hollow chambers 14 do not penetrate the multi-chamber hollow profile 10 completely, but only represent bores (blind holes) with walls 14a and a limited depth. In this case, the receiving hollow chambers 14 can be bolted and / or record screws that are only attached to one side of a frame profile part, so as to fix the multi-chamber hollow profile 10 on the frame profile. Corresponding blind-hole-like receiving hollow chambers 14 can be present on the rear side of the multi-chamber hollow profile 10, which is not visible, so that in this way two frame parts can be connected to one another via the multi-chamber hollow profile 10, without one passing through the multi-chamber hollow profile 10 there is a continuous thermally conductive connection between the two frame profile parts that runs through it.

Not shown is an alternative embodiment in which at least one receiving hollow chamber is provided which runs parallel and at least one perpendicular to the main axis of the multi-chamber hollow profile.

2 shows a further embodiment according to the invention of the multi-chamber hollow profile 0 according to the invention in a cross section perpendicular to its main axis. The multi-chamber hollow profile 10 comprises an outer wall 10a with a square profile and five hollow chambers. Four hollow chambers consist of equal segments of a square in cross-section. Together with their outer walls, they form the outer wall 10a of the multi-chamber hollow profile 10 and they are separated from one another by four inner walls 18 . When they are completely filled with fire protection material 20, they become four fire protection material chambers 12. Inside the hollow profile with a square cross section formed by the four fire protection material chambers 12, there is a receiving hollow chamber 14 with a circular wall 14a in cross section, in which there is no fire protection material 20.

All hollow chambers 12, 14 have walls 18, 14a that are impermeable to the fire protection material 20, e.g. made of glass fiber reinforced plastic (GRP), of which the outer wall 10a also consists. A flat cable 16 is guided through the centrally arranged receiving hollow chamber 14 . In this way, the flat cable 16 is protected from the heat and from being destroyed in the event of a fire for a certain period of time. Instead of continuous inner walls 18, which divide the interior of the multi-chamber hollow profile 10 into four fire protection material chambers 12, the receiving hollow chamber 14 could also be supported with the help of local support webs or the like on the inside of the outer wall 10a of the multi-chamber hollow profile 10 within a single fire protection material chamber 12.

The embodiment according to 3 represents a simplified modification of the embodiment according to FIG 2 The multi-chamber hollow profile 10 comprises an outer wall 10a in the form of a profile with a square cross-section and a hollow receiving chamber 14 arranged concentrically thereto in its interior in the form of an inner tube, the inner tube forming a wall 14a of the hollow receiving chamber 14 that is impermeable to fire protection material 20. In the cavity between the inner tube and the outer wall 10a of the multi-chamber hollow profile 10, a liquid precursor material, mixed together from two components, of a fire protection material 20 is poured, which hardens in situ and then the whole Arrangement gives dimensional stability. In this arrangement, the outer wall 10a of the multi-chamber hollow profile 10 simultaneously forms the outer wall 10a of the fire protection material chamber 12, and the inner tube introduced as a separate component is at the same time an inner wall 14a of the fire protection material chamber 12 and a wall 14a of the receiving hollow chamber 14 that is impermeable to fire protection material 20.

In the embodiment according to the invention 4 the multi-chamber hollow profile 10 consists of five hollow chambers. The outer wall 10a of the multi-chamber hollow profile 10 has a right-angled cross-section for insertion into a frame profile with profile inner sides that are spaced apart in parallel. Inside there is also a rectangular receiving hollow chamber 14 which is supported by four inner walls 18 against the inside of the outer wall 10a of the multi-chamber hollow profile 10 and is thereby fixed in place. The inner walls 18 run continuously parallel to the outer wall 10a and the receiving hollow chamber 14 and thus support the latter over their entire length on the inside of the outer wall 10a of the multi-chamber hollow profile 10, at the same time they divide the outer hollow chamber into four individual hollow chambers; however, they could also be interrupted and provide support for the hollow receiving chamber 14 on the inside of the outer wall 10a only at individual points. The cavities between the receiving hollow chamber 14 and the outer wall 10a of the multi-chamber hollow profile 10 are filled with fire protection material 20 and thereby form four fire protection material chambers 12. The receiving hollow chamber 14 has the same function as the receiving hollow chamber 14 according to the first embodiment ( 1a ) and accommodates four flat cables 16 in the exemplary embodiment shown, which are protected from external influences by the fire protection material chambers 12 surrounding them.

figure 5 Figure 12 shows a method of making another embodiment of the invention in which several aspects of the invention are realized simultaneously. The multi-chamber hollow profile 10 as a whole comprises an outer wall 10a, for example made of a metal, and an inner profile, for example made of a thermoplastic or duroplastic, which in cross section is designed in the form of a lattice from a plurality of inner walls 18a. In a first step, the inner profile is inserted into the outer wall 10a, whereby a total of 9 hollow chambers are formed, which are each separated from one another by inner walls 18 that are impermeable to fire protection material 20. Then six outer hollow chambers are filled with a first fire protection material 20a and two further hollow chambers with a second fire protection material 20b. These 8 individually filled fire protection material chambers 12, seen in cross section, form the outer area of the multi-chamber hollow profile 10. The inner hollow chamber initially remains empty and represents the receiving hollow chamber 14 of the multi-chamber hollow profile 10.

Figures 5a and 5b are each schematic representations of a method for producing a multi-chamber hollow profile 10 according to the invention according to two different variants of the sixth embodiment of the invention. The outer wall 10a of the multi-chamber hollow profile 10, which is rectangular in cross-section, is provided on its inner side with grooves 24 for fixing an inner profile with a grid-like arrangement of inner walls 18a ( Figure 5a ) or from individual inner walls 18b ( Figure 5b ) fitted. The inner walls 18b can be used or positioned as required, for example to form a receiving cavity 14 for a locking bar of a door frame profile. The inner walls 18b and the inner wall grid 18a can consist of a material with a lower melting point than the outer wall 10a, as long as the outer wall 10a enclosing the fire protection material chambers 12 to the outside is sufficiently heat-resistant. The outer wall 10a has Figures 5A and 5B in each case the same arrangement of grooves 24, whereby a flexible design of the multi-chamber hollow profile 10 with inner walls 18a, 18b arranged differently as required is made possible.

6 shows a modification of the embodiment according to the invention figure 5 . Eight of the nine hollow chambers are filled with the same fire protection material 20 as fire protection material chambers 12 and essentially form the outer area of the multi-chamber hollow profile 10 in the cross-sectional view. The remaining hollow chamber forms a receiving hollow chamber 14, which in this case is not completely surrounded by fire protection material chambers 12, but in which no fire protection material chamber 12 is provided between the receiving hollow chamber 14 and the outer wall 10a of the multi-chamber hollow profile 10 on a narrow side. This construction can be necessary if cables have to be routed in a receiving hollow chamber 14 arranged near the edge. Despite the immediate adjoining of the outer wall 10a of the multi-chamber hollow profile 10, this embodiment also offers sufficient protection for the cables or others routed in the hollow receiving chamber 14 in the event of a fire due to the eight fire protection material chambers 12 that are present, which predominantly surround the hollow receiving chambers 14 components installed in it from penetrating heat.

Figures 6a and 6b are schematic representations of a multi-chamber hollow profile 10 according to the invention according to two different variants of the seventh embodiment of the invention. The recording cavities 14 have in this Embodiment outer walls with a part-circular ( Figure 6a ) or circular ( Figure 6B ) Cross section and are accessible from an area of the outer wall 10a of the multi-chamber hollow profile 10 ( Figure 6a ) or arranged in the immediate vicinity of the outer wall 10a ( Figure 6b ) to facilitate access.

7 shows three embodiments according to the invention, in which each multi-chamber hollow profile 10 with an essentially square outer contour (cross-section) is provided with internal receiving hollow chambers 14 that are circular or elliptical in cross-section. The receiving hollow chambers 14 are as in 2 , 4 supported on the inside of the outer wall 10a of the multi-chamber hollow profile 10 with the aid of continuous inner walls 18 (which can also be merely local support webs) and are each completely surrounded by fire protection material chambers 12 .

8 shows an embodiment according to the invention, in which a multi-chamber hollow profile 10 consists of three flat cross-section, cuboid hollow chambers layered one on top of the other, of which the two outer hollow chambers form fire protection material chambers 12, which enclose an inner hollow chamber as a receiving hollow chamber 14 between them. The multi-chamber hollow profile 10 is provided with four spacers or fixing pieces, so that it can be pushed together with the spacers or fixing pieces into a correspondingly large box-shaped enveloping profile. The enveloping profile can be part of a fire protection frame into which the multi-chamber hollow profile 10 described is inserted as an insert (not shown). However, the enveloping profile can also form the outer wall 10a of a complex multi-chamber hollow profile 10', which is composed of the previously described multi-chamber hollow profile 10 as the inner profile and of a box-shaped enveloping profile (outer wall 10a) and is intended as a whole for insertion into a fire protection frame. The spacers serve for the secure positioning of the inner multi-chamber hollow profile 10, which does not completely fill the enveloping profile (outer wall 10a). The inner multi-chamber hollow profile 10 with its spacers can consist of a metal. The cuboid enveloping profile forming the outer wall 10a of the complex multi-chamber hollow profile 10' can be made of a glass fiber reinforced plastic (GRP). Other materials, as generally disclosed herein for the walls of the multi-chamber hollow profile 10 according to the invention, are alternatively possible.

9 shows an embodiment according to the invention, in which the technical possibilities of the present invention are exemplified in the application as a modular or modular system. The multi-chamber hollow profile 10 comprises an outer wall 10a, which defines the outer shape of the multi-chamber hollow profile 10. In this outer wall 10a is inserted twelve elongated filling elements, each with a hexagonal cross-section. Six of the elements (dark color) consist of a dimensionally stable solid fire protection material 20a with a shell wall and are inserted into the cavity enclosed by the outer wall 10a. Alternatively, in a variant that is not shown, dimensionally stable filling elements made of fire protection material 20a without their own enveloping profile could also be used. Six other elements form hollow chambers with polymer walls and initially remain empty. After all twelve elements have been introduced into the cavity enclosed by the outer wall 10a, they are filled with a fire protection material 20b, either in the form of six hexagonally shaped solid fire protection material rods, or by pouring a liquid or powdered precursor material made from at least two mixed components into the six Hollow chambers, which then hardens within the hollow chambers to form a solid fire protection material 20b and makes the hollow chambers filled in this way into fire protection material chambers 12. The 12 filling elements enclose 5 unfilled hollow chambers between them, at least one of which is provided as a hollow chamber 14 for later accommodating cables, fittings, locking rods or the like; all unfilled receiving hollow chambers 14 are each predominantly surrounded by fire protection material chambers 12 . The remaining cavities of the multi-chamber hollow profile 10 form empty chambers.

Figures 9a and 9b are schematic representations of two different variants of the ninth embodiment of the invention, in which filling elements are arranged and filled differently or have an octagonal cross section ( Figure 9b ).

10 shows a variety of possible further embodiments of the multi-chamber hollow profile according to the invention 10. As in the Figures 2 to 9 shows figure 10 the profiles as a cross section through the longitudinal profile. The first two multi-chamber hollow profiles from the left in the second row can either be inserted into an outer wall of a complex multi-chamber hollow profile or into a receiving space of a fire protection structure, for example in a metal hollow profile of a window frame.

11 schematically illustrates another manufacturing method of a multi-chamber hollow profile 10 according to the invention from two halves 10b, 10c, which are connected to each other as fire protection material chambers 12 with fire protection material 20 including two receiving hollow chambers 14.

12 illustrates a variant of the manufacturing process according to FIG 11 , in which both halves 10b, 10c have exposed fire protection material 20 without a wall on the surfaces facing one another, so that after the connection of the two halves 10b, 10c there is a single fire protection material chamber 12 with a uniform filling of fire protection material 20.

The halves 10b, 10c of Figure 1 1 and 12 could also contain different fire protection materials.

13 schematically illustrates a window frame profile 22 as an example of a fire protection structure with a receiving space 22a and a loosely introduced into the receiving space 22a multi-chamber hollow profile 10 according to the invention with an outer wall 10a. The multi-chamber hollow profile 10 comprises two receiving hollow chambers 14 surrounded by a wall 14a impermeable to fire protection material 20, which are separated from one another by a wall 14a and completely surrounded by a fire protection material chamber 12.

To fasten the multi-chamber hollow profile 10 in the receiving space 22a of the window frame profile 22, the latter and/or the former can use fastening aids such as grooves ( Figures 5a, 5b ), include claws or hooks (not shown).

14 shows schematically another embodiment of a multi-chamber hollow profile 10 according to the invention with an angular (L-shaped) cross section, which is adapted to a receiving space of a corresponding frame profile (not shown). A receiving hollow chamber 14 running transversely to the longitudinal direction of the multi-chamber hollow profile 10 is provided for the passage of fastening bolts.

15 shows schematically another embodiment of a multi-chamber hollow profile 10 according to the invention, which is introduced into a window frame profile 22. The window frame profile 22 comprises two metal profiles 30, between which there is a receiving space 22a, in which the multi-chamber hollow profile 10 according to the invention is inserted. The receiving space 22a has a rectangular cross section, which is delimited on its wide sides by the two metal profiles 30 and is open on its narrower longitudinal sides. The metal profiles 30 are held apart by fastening bolts 28 which are welded or otherwise connected to the metal profiles 30 .

The multi-chamber hollow profile 10 comprises similar to the embodiment 1 b a fire protection material chamber 12 filled with fire protection material 20 and transversal receiving hollow chambers 14 into which the fastening bolts 28 are inserted. The receiving hollow chambers 14 have walls 14a which are impermeable to the fire protection material 20. The metal profiles 30 can be cast with a fire protection material 20a, or fire protection material 20a can be pushed into the metal profiles 30 in the form of a solid bar or insert.

A first aspect of the invention relates to a multi-chamber hollow profile with an outer wall (10a), which comprises at least one fire protection material chamber (12), which is completely or partially filled with fire protection material (20, 20a, 20b), and at least one receiving hollow chamber (14), for use in fire protection structures, in particular in fire resistant frames for fire protection elements, for example as an insert or insert in a fire resistant glazing frame (22).

• im Inneren des Mehrkammerhohlprofils (10) angeordnet ist,
• vollständig oder überwiegend von der zumindest einen Brandschutzmaterialkammer (12) umgeben ist;
• zumindest eine Stirnfläche hat, welche im Bereich der Außenwand (10a) oder der Stirnseiten des Mehrkammerhohlprofils (10) angeordnet ist, so dass die zumindest eine Aufnahme-Hohlkammer (14) von außerhalb des Mehrkammerhohlprofils (10) zugänglich ist; und
• durch eine für das Brandschutzmaterial (20, 20a, 20b) zumindest weitgehend undurchlässige Wand (14a) von der zumindest einen, sie vollständig oder überwiegend umgebenden Brandschutzmaterialkammer (12) getrennt ist.

It is proposed that the at least one receiving hollow chamber (14):

• is arranged inside the multi-chamber hollow profile (10),
• is completely or predominantly surrounded by the at least one fire protection material chamber (12);
• has at least one end face, which is arranged in the area of the outer wall (10a) or the end faces of the multi-chamber hollow profile (10), so that the at least one receiving hollow chamber (14) is accessible from outside the multi-chamber hollow profile (10); and
• is separated by a wall (14a) that is at least largely impermeable to the fire protection material (20, 20a, 20b) from the at least one fire protection material chamber (12) that completely or predominantly surrounds it.

For the first aspect of the invention, it is also proposed according to a second aspect of the invention that the at least one hollow receiving chamber (14) has at least one open end face for receiving components in the hollow receiving chamber (14), preferably according to a third aspect of the invention, the open end can be closed with at least one cover.

In relation to the aspects of the invention mentioned above, it is also proposed according to a fourth aspect of the invention that the hollow receiving chamber (14) has at least one cross-sectional constriction for throttling a flow of hot gases in the event of a fire.

In relation to the aspects of the invention mentioned above, it is also proposed according to a fifth aspect of the invention that the inside of the wall (14a) of the hollow receiving chamber (4) has at least regionally a three-dimensional structure with macroscopic unevenness, in particular grooves, ribs or a grain .

In relation to the aspects of the invention mentioned above, it is also proposed according to a sixth aspect of the invention that the wall (14a) of the at least one receiving hollow chamber (14) and the wall of the at least one fire protection material chamber (12) extend parallel to the main axis of the multi-chamber hollow profile (10 ) extend and end faces of the at least one receiving hollow chamber (14) run essentially parallel to end faces of the at least one fire protection material chamber (12).

In addition to the above-mentioned first to fifth aspects of the invention, it is proposed according to a seventh aspect of the invention that the wall (14a) of the at least one receiving hollow chamber (14) extends perpendicularly, transversely or obliquely to the main axis of the multi-chamber hollow profile (10) and the wall of the at least one fire protection material chamber (12) extends parallel to the main axis of the multi-chamber hollow profile (10) and the end faces of the receiving hollow chamber (14) are arranged essentially parallel to the main axis of the multi-chamber hollow profile (10).

In relation to the aspects of the invention mentioned above, it is also proposed according to an eighth aspect of the invention that the walls (10a, 14a, 18, 18a, 18b) forming the multi-chamber hollow profile (10) are formed in one piece from a single material.

In addition to the above-mentioned first to seventh aspects of the invention, a ninth aspect of the invention proposes that the walls (10a, 14a, 18, 18a, 18b) forming the multi-chamber hollow profile (10) be formed in multiple parts from one or more different materials.

In addition to the above-mentioned ninth aspect of the invention, it is proposed according to a tenth aspect of the invention that at least one fire protection material chamber (12) and/or at least one receiving hollow chamber (14) as a separate filling element in the wall (10a) of the multi-chamber hollow profile ( 10) Encased interior is inserted.

In addition to the eighth to tenth aspects of the invention mentioned above, an eleventh aspect of the invention proposes that the materials of the walls (10a, 14a, 18, 18a, 18b) be selected from polymers, glass fiber or carbon-reinforced plastic and metals.

In relation to the aspects of the invention mentioned above, it is also proposed according to a twelfth aspect of the invention that at least one fire protection material chamber (12) be filled completely or partially - with a solid and dimensionally stable fire protection material (20, 20a, 20b) and/or with a kneadable, liquid, gel-like or powdery precursor material of a fire protection material (20, 20a, 20b) is filled, which has cured in this fire protection material chamber (12) to form the fire protection material (20, 20a, 20b).

In relation to the aspects of the invention mentioned above, it is also proposed according to a thirteenth aspect of the invention that several fire protection material chambers (12) are provided, which are filled with different fire protection materials (20, 20a, 20b), which differ in their chemical composition and/or in differ in their physical properties.

In relation to the above-mentioned twelfth or thirteenth aspect of the invention, it is also proposed according to a fourteenth aspect of the invention that the fire protection material is a multi-component system which, before the at least one fire protection material chamber (12) was filled, was mixed from precursor materials, into which at least one fire protection material chamber (12 ) was cast and cured there.

In addition to the aspects of the invention mentioned above, it is proposed according to a fifteenth aspect of the invention that the multi-chamber hollow profile additionally comprises fastening aids for fastening the multi-chamber hollow profile (10) in a receiving space of a fire protection structure.

In relation to the aspects of the invention mentioned above, it is also proposed according to a sixteenth aspect of the invention that the at least one hollow receiving chamber (14) is designed as a blind hole.

In relation to the aspects of the invention mentioned above, it is also proposed according to a seventeenth aspect of the invention that the at least one receiving hollow chamber (14) is designed as a passage through the multi-chamber hollow profile (10) and is accessible from two opposite end faces.

In relation to the aspects of the invention mentioned above, it is also proposed according to an eighteenth aspect of the invention that the outer wall (10a) has a polygonal cross section.

In relation to the aspects of the invention mentioned above, it is also proposed according to a nineteenth aspect of the invention that the at least one hollow receiving chamber (14) has a polygonal cross section.

In relation to the aspects of the invention mentioned above, it is also proposed according to a twentieth aspect of the invention that the at least one fire protection material chamber (12) has a polygonal cross section.

In relation to the aspects of the invention mentioned above, it is also proposed according to a twenty-first aspect of the invention that the material and the thickness of the outer wall (10a) are selected in such a way that the outer wall (10a) can be heated up to a temperature of the outer wall (10a) of at least 70 ° C, in particular up to at least 100 ° C for the fire protection material (20, 20a, 20b) and its components remains impermeable and only at the high temperatures of a fire the release and evaporation of cooling water from the fire protection material (20, 20a, 20b) allows.

A twenty-second aspect of the invention relates to a fire protection structure with a receiving space (22a) and a multi-chamber hollow profile (10) introduced into the receiving space (22a) according to one of the aforementioned aspects.

In relation to the twenty-second aspect of the invention mentioned above, it is also proposed according to a twenty-third aspect of the invention that the multi-chamber hollow profile (10) is loosely pushed into the receiving space (22a).

In addition to the above-mentioned twenty-second aspect of the invention, it is proposed according to a twenty-fourth aspect of the invention that the multi-chamber hollow profile (10) be fixed in the receiving space (22a ) is fixed.

In addition to the twenty-second to twenty-fourth aspects of the invention mentioned above, there is also a twenty-fifth aspect of the invention proposed that the fire protection structure is a metal frame hollow profile (22), the cavity of which forms the receiving space (22a).

A twenty-sixth aspect of the invention relates to a method for producing a multi-chamber hollow profile (10) according to one of the first to twenty-first aspects of the invention.

• Herstellen eines Mehrkammerhohlprofils (10) aus mindestens zwei Hohlkammern ohne Brandschutzmaterial; und
• Einfüllen von Brandschutzmaterial (20, 20a, 20b) in zumindest eine als Brandschutzmaterialkammer (12) vorgesehene Hohlkammer.

According to the twenty-sixth aspect of the invention, it is proposed that the method comprises the following steps:

• Production of a multi-chamber hollow profile (10) from at least two hollow chambers without fire protection material; and
• Filling of fire protection material (20, 20a, 20b) into at least one hollow chamber provided as fire protection material chamber (12).

• Vermischen von Vorläufermaterialien für ein Brandschutzmaterial (20, 20a, 20b) aus einem Mehrkomponentensystem zu einer flüssigen Mischung,
• Einfüllen der flüssigen Mischung in wenigstens eine als Brandschutzmaterialkammern (12) vorgesehene Hohlkammer und
• Aushärten lassen der eingefüllten Mischung unter Erhalt des fertigen Mehrkammerhohlprofils (10) mit mindestens einer Aufnahme-Hohlkammer (14) und mindestens einer Brandschutzmaterialkammer (12).

According to a twenty-seventh aspect of the invention, it is proposed that the method according to the twenty-sixth aspect of the invention comprises the following additional steps:

• Mixing precursor materials for a fire protection material (20, 20a, 20b) from a multi-component system to form a liquid mixture,
• Filling the liquid mixture into at least one hollow chamber provided as fire protection material chambers (12) and
• Allow the filled-in mixture to harden to obtain the finished multi-chamber hollow profile (10) with at least one receiving hollow chamber (14) and at least one fire protection material chamber (12).

A twenty-eighth aspect of the invention relates to the use of a multi-chamber hollow profile (10) according to one of the first to twenty-first aspects of the invention as an insert or insert of a fire protection structure, in particular a fire protection frame.

Claims (19)

Multi-chamber hollow profile with an outer wall (10a), which comprises at least one fire protection material chamber (12), which is completely or partially filled with fire protection material (20, 20a, 20b), and at least one receiving hollow chamber (14), for use in fire protection structures, in particular in fire-resistant frame for fire protection elements, for example as an insert or insert in a fire-resistant glazing frame (22),
characterized in that the at least one receiving cavity (14): - is arranged inside the multi-chamber hollow profile (10), - is completely or predominantly surrounded by the at least one fire protection material chamber (12); - has at least one end face, which is arranged in the area of the outer wall (10a) or the end faces of the multi-chamber hollow profile (10), so that the at least one receiving hollow chamber (14) is accessible from outside the multi-chamber hollow profile (10); and - is separated by a wall (14a) that is at least largely impermeable to the fire protection material (20, 20a, 20b) from the at least one fire protection material chamber (12) that completely or predominantly surrounds it. Multi-chamber hollow profile according to claim 1,
characterized in that
the at least one hollow receiving chamber (14) has at least one open end for receiving components in the hollow receiving chamber (14), the open end preferably being closable with at least one cover. Multi-chamber hollow profile according to one of the preceding claims,
characterized in that
the hollow receiving chamber (14) has at least one cross-sectional constriction for throttling a flow of hot gases in the event of a fire and/or the inside of the wall (14a) of the hollow receiving chamber (4) has, at least in certain areas, a three-dimensional structure with macroscopic unevenness, in particular grooves, ribs or a grain. Multi-chamber hollow profile according to one of the preceding claims,
characterized in that the wall (14a) of the at least one receiving hollow chamber (14) and the wall of the at least one fire protection material chamber (12) extend parallel to the main axis of the multi-chamber hollow profile (10) and end faces of the at least one receiving hollow chamber (14) essentially parallel to end faces of the at least one fire protection material chamber (12), or the wall (14a) of the at least one receiving hollow chamber (14) extends perpendicularly, transversely or obliquely to the main axis of the multi-chamber hollow profile (10) and the wall of the at least one fire protection material chamber (12) extends parallel to the main axis of the multi-chamber hollow profile (10) and the End faces of the receiving hollow chamber (14) are arranged essentially parallel to the main axis of the multi-chamber hollow profile (10). Multi-chamber hollow profile according to one of the preceding claims,
characterized in that
the walls (10a, 14a, 18, 18a, 18b) forming the multi-chamber hollow profile (10) are formed in one piece from a single material, the material of the walls (10a, 14a, 18, 18a, 18b) preferably being polymers, glass fiber or carbon reinforced plastic and metals. Multi-chamber hollow profile according to one of claims 1 - 4,
characterized in that
the walls (10a, 14a, 18, 18a, 18b) forming the multi-chamber hollow profile (10) are formed in multiple parts from one or more different materials, with preferably at least one fire protection material chamber (12) and/or at least one receiving hollow chamber (14) as a separate Filling element is inserted into the interior enveloped by the outer wall (10a) of the multi-chamber hollow profile (10), the materials of the walls (10a, 14a, 18, 18a, 18b) preferably being selected from polymers, glass fiber or carbon-reinforced plastic and metals. Multi-chamber hollow profile according to one of the preceding claims,
characterized in that
at least one fire protection material chamber (12) is completely or partially - filled with a solid and dimensionally stable fire protection material (20, 20a, 20b) and/or is filled with a kneadable, liquid, gel-like or powdery precursor material of a fire protection material (20, 20a, 20b), which has hardened in this fire protection material chamber (12) to form the fire protection material (20, 20a, 20b). Multi-chamber hollow profile according to one of the preceding claims,
characterized in that
several fire protection material chambers (12) are provided, which are filled with different fire protection materials (20, 20a, 20b) which differ from one another in terms of their chemical composition and/or their physical properties. Multi-chamber hollow profile according to claim 7 or 8,
characterized in that
the fire protection material is a multi-component system which was mixed from precursor materials before the at least one fire protection material chamber (12) was filled, was poured into the at least one fire protection material chamber (12) and has hardened there. Multi-chamber hollow profile according to one of the preceding claims,
characterized by fastening aids for fastening the multi-chamber hollow profile (10) in a receiving space of a fire protection structure. Multi-chamber hollow profile according to one of the preceding claims,
characterized in that the at least one receiving hollow chamber (14) is designed as a blind hole or the at least one receiving hollow chamber (14) is designed as a passage through the multi-chamber hollow profile (10) and is accessible from two opposite end faces. Multi-chamber hollow profile according to one of the preceding claims,
characterized in that the outer wall (10a) has a polygonal cross section and/or the at least one receiving hollow chamber (14) has a polygonal cross section and/or the at least one fire protection material chamber (12) has a polygonal cross section. Multi-chamber hollow profile according to one of the preceding claims,
characterized in that the material and the thickness of the outer wall (10a) are selected in such a way that the outer wall (10a) has a temperature of at least 70°C, in particular up to at least 100°C for the fire protection material (20 , 20a, 20b) and for its components remains impermeable and only at the high temperatures of a fire the delivery and evaporation of cooling water from the fire protection material (20, 20a, 20b) allows. Fire protection structure with a receiving space (22a) and a multi-chamber hollow profile (10) according to one of the preceding claims introduced into the receiving space (22a). Fire protection structure according to claim 14,
characterized in that the multi-chamber hollow profile (10) is loosely inserted into the receiving space (22a) or the multi-chamber hollow profile (10) is secured in the receiving space (22a ) is fixed. Fire protection structure according to one of claims 14 - 15,
characterized by a metal frame hollow profile (22), the cavity of which forms the receiving space (22a). Method for producing a multi-chamber hollow profile (10) according to one of Claims 1 - 13
characterized in that it comprises the following steps: - Production of a multi-chamber hollow profile (10) from at least two hollow chambers without fire protection material; and - Filling of fire protection material (20, 20a, 20b) into at least one hollow chamber provided as a fire protection material chamber (12). Method according to claim 17, characterized by the additional steps: - Mixing precursor materials for a fire protection material (20, 20a, 20b) from a multi-component system to form a liquid mixture, - filling the liquid mixture into at least one hollow chamber provided as fire protection material chambers (12) and - Allow the filled-in mixture to harden to obtain the finished multi-chamber hollow profile (10) with at least one receiving hollow chamber (14) and at least one fire protection material chamber (12). Use of a multi-chamber hollow profile (10) according to one of Claims 1 to 13 as an insert or insert in a fire protection structure, in particular a fire protection frame.

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