Fire resistant profile frame construction

Abstract

The invention relates to a profile frame construction (1), in particular for windows or doors in a fire-resistant design, in which two or more hollow profiles (2, 3) made of metal, in particular aluminum, are connected to one another via heat-insulating insulating webs (4). In order to ensure that the profile frame construction (1) has increased resistance to the effects of fire, the invention provides that at least one of the insulating webs (4), and preferably all insulating webs (4) of the profile frame construction (1), is / are at least partially or regionally provided with an insulating layer-forming fire-protection coating (100), and in particular coated.

Description

[0001] The present invention relates in particular to a profile frame construction, in particular for windows or doors in fire protection design, as well as components of the profile frame construction with increased resistance to fire.

[0002] In particular, the invention relates to a profile frame construction, in particular for windows or doors in fire protection design, in which two or more hollow profiles made of metal, in particular light metal such as aluminum, are connected to one another via heat-insulating insulating bars.

[0003] EP 0 717 165 A1 discloses equipping a fire-resistant framework made of metal profiles for windows, doors, facades, or glass roofs with a fire protection insert in the form of a molded body made of a heat-binding, hydrophilic absorber with a high water content. The metal profiles are preferably designed as hollow profiles, and the fire protection insert is arranged inside the hollow profiles. The fire protection insert consists of a gypsum-potassium-alum combination. Alum is generally capable of storing a high proportion of water of crystallization. If the framework or the fire protection inserts are exposed to a temperature above approximately 85°C, the water of crystallization is released and can cool the framework. In the event of a fire, this can extend the service life of the framework.

[0004] It is also known from DE 10 2005 014 544 A1 that fire protection inserts can have an insulating function and, in particular, a cooling function.

[0005] The fire resistance of a metal profile framework described above is essentially limited by the water storage capacity of the material, which releases water under the influence of heat. Since the available internal space of the hollow profiles is limited, the fire resistance attributable to the fire protection inserts cannot be increased indefinitely. For certain requirements, the achievable fire resistance is too low.

[0006] Based on this problem, the invention is based on the object of specifying a profile frame construction in fire protection design which, with the same installation space, has a higher resistance to the effects of fire than measures known from the prior art.

[0007] A further object of the present invention is to provide a hollow profile for a fire protection construction, in particular for a profile frame construction in fire protection design, in which the service life of the hollow profile can be extended in the event of a fire in an easy-to-implement but nevertheless effective manner.

[0008] This problem is solved in particular by the subject matter of independent patent claim 1.

[0009] Accordingly, the invention relates to a profile frame construction, particularly for windows or doors with a fire-resistant design, in which two or more hollow profiles made of metal, in particular light metal such as aluminum, are connected to one another via heat-insulating insulating bars. According to the invention, at least one of the insulating bars, and preferably all insulating bars of the profile frame construction, is / are at least partially or regionally provided with an insulating layer-forming fire-protection coating, and in particular, coated.

[0010] The intumescent fire protection coating is, in particular, a fire protection coating based on substances that form foam layers and carbon in the event of a fire, film-binding binders, blowing agents, and common auxiliary materials and additives. Such intumescent fire protection coatings, also known as intumescent coatings, are characterized by the fact that they foam up in the event of a fire under the influence of a certain temperature. This foaming of the fire protection coating prevents or at least impedes the transfer of heat to the coated component of the profile frame construction, in particular to the insulating bars of the profile frame construction.

[0011] In particular, the intumescent fire protection coating is a fire protection coating with which the longest possible fire resistance times can be achieved with the smallest possible application quantities.

[0012] To achieve this, it is conceivable to reduce the specific density of the dried film of the fire protection coating. Since this may be associated with a reduction in fire protection performance, it is preferable to use a fire protection coating whose reaction starts below 180°C. In this context, it is conceivable, for example, that the intumescent fire protection coating contains a flame-retardant mixture containing a phosphorus-nitrogen flame retardant and a phosphinic acid salt and / or a diphosphinic acid salt and / or their polymers.

[0013] The phosphorus / nitrogen flame retardants can be, in particular, ammonium hydrogen phosphate, ammonium dihydrogen phosphate, and / or ammonium polyphosphate. Of course, other compositions are also suitable for the intumescent fire protection coating, such as a multi-component epoxy resin coating compound with a first component containing at least one epoxy resin, a hardening component containing at least one hardener for the epoxy resin, and an intumescent component containing at least one acid component, at least one carbon source, and at least one gas generator.

[0014] In such an intumescent multi-component epoxy resin coating compound, it is advisable that the component containing the epoxy resin and the hardener component are present separately from each other in a reaction-inhibiting manner and only react when mixed and polymerize.

[0015] According to further developments of the profile frame construction according to the invention, it is provided that an inner hollow chamber is formed between at least one of the insulating webs and at least one of the hollow profiles, in which an insert made of a fire protection material that foams up due to the action of heat is received or arranged, wherein the insert is at least partially or regionally provided and in particular coated with an insulating layer-forming fire protection coating.

[0016] Instead of an insert made of a fire protection material that expands when exposed to heat, a fire protection insert made of a heat-binding, hydrophilic adsorber with a high water content can also be used.

[0017] The advantages achievable with the solution according to the invention are obvious. By additionally providing and, in particular, coating at least components of the profile frame construction, such as the insulating bars or corresponding fire protection inserts, with an intumescent fire protection coating, the disintegration of the construction in the event of a fire can be delayed for a relatively long time, since the intumescent fire protection coating foams under the influence of heat and, as a heat shield, delays the disintegration process of the construction in the event of a fire.

[0018] On the other hand, the intumescent fire protection coating can be applied particularly easily and simply, for example by spray coating, dip coating or painting, to the corresponding components of the profile frame construction without requiring additional installation space.

[0019] In particular, it is also conceivable that at least one of the hollow profiles and preferably all hollow profiles of the profile frame construction are provided and, in particular, coated with an insulating layer-forming fire protection coating, at least partially or in some areas.

[0020] The corresponding components of the profile frame construction can be coated directly with the intumescent fire protection coating using, in particular, a spray coating process, brushing process or dipping process.

[0021] Alternatively, it is also conceivable to provide the insulating fire protection coating as an adhesive film, which is then glued to the corresponding components of the profile frame construction.

[0022] For example, the intumescent fire protection coating can be applied to a carrier substrate, wherein the carrier substrate coated with the intumescent fire protection coating is bonded, in particular, to the corresponding component of the profile frame construction in a materially bonded manner and preferably by adhesive bonding. The carrier substrate is, in particular, provided as a film with a corresponding adhesive layer / adhesion layer.

[0023] It has been shown that the fire resistance of the profile frame construction can be significantly improved by choosing even low layer thicknesses for the intumescent fire protection coating. Depending on the desired fire resistance of the corresponding component of the profile frame construction or the desired fire resistance of the entire profile frame construction, layer thicknesses for the intumescent fire protection coating in a range of approximately 200 µm to 5,000 µm, and preferably in a range of approximately 500 µm to approximately 3,000 µm, are sufficient.

[0024] The invention further relates to a hollow profile for a fire protection structure, in particular for a profile frame structure in a fire-protection design of the aforementioned type according to the invention, wherein the hollow profile is equipped with at least one fire protection insert designed to extend the service life of the hollow profile in the event of a fire. This fire protection insert can, for example, be an insert made of a heat-binding, hydrophilic material with a high water content. Alternatively or additionally, the fire protection insert can also be formed from a material that expands in the event of a fire.

[0025] In the hollow profile according to the invention, it is provided in particular that the at least one fire protection insert is provided and in particular coated at least partially or in regions with an insulating layer-forming fire protection coating.

[0026] Here, too, it is advisable for at least one fire protection insert to be directly coated with the intumescent fire protection coating.

[0027] Alternatively, it is also conceivable that the insulating layer-forming fire protection coating is a layer of a carrier substrate, which is connected in particular in a material-to-material manner and preferably by adhesive bonding to the at least one fire protection insert.

[0028] According to one aspect of the present invention, it relates to a profile frame construction, wherein the profile frame construction has at least one connecting and / or fastening element, in particular in the form of a corner connector. In particular, it is provided that at least one component of the at least one connecting and / or fastening element of the profile frame construction is at least partially or regionally provided with an insulating layer-forming fire protection coating, and in particular, coated.

[0029] According to embodiments of the invention, this relates to a facade or a skylight with a transom or mullion profile, on which two spaced-apart glass seals are provided, each of which holds a filling element, in particular in the form of a panel or a glass pane. The two filling elements are held to the glass seals by a retaining strip, and an insulating strip is arranged between the end faces of the filling elements, which is fixed to a screw groove in the transom or mullion profile. Such a facade or skylight is known, at least in principle, from DE 10 2022 117 885.4, for example.

[0030] According to the invention, however, it is provided in the facade or the skylight that at least one of the glass system seals and / or the retaining strip and / or the insulating strip is provided with an insulating layer-forming fire protection coating and in particular is coated.

[0031] Generally speaking, the invention also relates to a frame assembly, particularly for facades or skylights, comprising a connecting profile and a sliding profile, each in particular in the form of a hollow profile, as well as a connector assembly for connecting the connecting profile to the sliding profile. It is advantageous for at least one component of the connector assembly to be provided, at least partially or in some areas, with an insulating fire protection coating, and in particular coated.

[0032] The invention further relates to a method for increasing the fire resistance of a profile frame construction for windows, doors, facades, glass roofs and the like, wherein at least one component of the profile frame construction is provided with an insulating layer-forming fire protection coating and is coated in particular by means of a spray coating process.

[0033] According to a further development of the method according to the invention, it is provided that the at least one component of the profile frame construction is coated with the intumescent fire protection coating by means of a spray coating, brushing or dipping process, wherein the at least one component of the profile frame construction coated with the intumescent fire protection coating is subsequently dried in the course of a drying process associated with a temperature increase, wherein during the drying process the at least one component of the profile frame construction coated with the intumescent fire protection coating is increased to a temperature which is below a temperature which is critical for the response of the intumescent fire protection coating.

[0034] Exemplary embodiments of the present invention are described in more detail below with reference to the accompanying drawings.

[0035] They show: FIG. 1 shows a schematic and sectional view of a first exemplary embodiment of the profile frame construction according to the invention; FIG. 2 shows a schematic and sectional view of a second exemplary embodiment of the profile frame construction according to the invention; FIG. 3 shows a schematic and sectional view of a third exemplary embodiment of the profile arrangement according to the invention; FIG. 4 shows a schematic and sectional view of part of a fire-protection facade with a further exemplary embodiment of the present invention; FIG. 5 shows a schematic and sectional view of part of a fire-protection facade with a further exemplary embodiment of the present invention; and FIG. 6 shows a schematic and sectional view of part of a fire-protection facade with a further exemplary embodiment of the present invention.

[0036] In FIG. 1An exemplary embodiment of the profile frame construction 1 according to the invention is shown schematically and in a sectional view using a fixed glazing.

[0037] This is a hollow profile assembly for fire protection structures comprising a first hollow profile 2 and a second hollow profile 3, wherein the two hollow profiles 2, 3 are connected to each other via insulating webs 4. The insulating webs 4 have a reduced thermal conductivity compared to the metal of the hollow profiles 2, 3.

[0038] Preferably, the hollow profiles 2, 3 form suitable shaped connecting elements, such as rails or tenons and grooves, so that the hollow profiles 2, 3 and the insulating webs 4 can already be joined together by form-fitting.

[0039] In FIG. 1 it is indicated that the corresponding outer sides of the insulating bars 4 are provided with an insulating layer-forming fire protection coating 100.

[0040] Preferably, the insulating bars 4 are directly coated with the intumescent fire protection coating 100 using a spray coating process. The layer thickness is approximately 200 µm to approximately 5,000 µm.

[0041] A further exemplary embodiment of the profile frame construction 1 according to the invention is shown in FIG. 2 shown. This is a fixed glazing unit and a window.

[0042] As also shown, on the insulating bars 4 the FIG. 2 The profile frame construction 1 shown is provided, at least in some areas, with an intumescent fire protection coating 100. Furthermore, a corresponding intumescent fire protection coating 100 is provided on a sealing element 5 between the fixed glazing and the window.

[0043] A further exemplary embodiment of the profile frame construction 1 according to the invention is shown in FIG. 3These are fixed glazing and doors.

[0044] As with the FIG. 1 In the exemplary embodiment shown, the insulating bars 4 are each provided on the outside with an insulating layer-forming fire protection coating 100.

[0045] In FIG. 4 A facade structure 10 in fire protection design is shown schematically and in an isometric view. The facade structure 10 comprises a mullion or transom profile 11, on which lateral grooves are provided into which seals 12 are inserted. The seals 12 serve as a support for the edge area of ​​insulating glass panes 13. The insulating glass panes 13 are held on the outside by a pressure profile formed by a profile strip 14 and a seal.

[0046] An insulating strip 15 serving as an insulator is located centrally between the end faces of the adjacent insulating glass panes 13, which engages in or around a screw groove 16 of the metal transom or mullion. Additional seals can be installed on the outward-facing side of the insulating strip 15, so that a glass rebate area between the insulating glass panes 13 is divided into two halves.

[0047] The insulation strip 15 has a base body 17 made of an intumescent material. The base body 17 of the insulation strip 15 comprises a clamping area 18 facing the screw groove 16 with opposing clamping webs, between which the screw groove 16 is clamped at least partially and / or in certain areas.

[0048] The base body 17 of the insulation strip 15 further comprises a holding area 19 facing the holding strip with two opposing holding webs, between which an insertion channel is formed for receiving a screw 20 screwed into the screw groove 16.

[0049] As in FIG. 4 As shown, an energy-absorbing heat sink 21 is accommodated in the transom or mullion profile 11. According to the invention, this heat sink 21 is provided with an insulating layer-forming fire protection coating 100.

[0050] In FIG. 5 is a further development of the facade construction 10 according to FIG. 4 shown, wherein here an insertion profile 22, which engages in the transom or post profile 11 and carries the energy-absorbing heat sink 21, is provided with a corresponding insulating layer-forming fire protection coating 100.

[0051] In FIG. 6it is shown that the base body 17 of the insulation strip 15 can also be provided with a corresponding fire protection coating 100.

[0052] The invention is not limited to the embodiments shown in the drawings, but results from a synopsis of all features disclosed herein. List of reference symbols

[0053] 1Profile frame construction 2First hollow profile 3Second hollow profile 4Insulating web 5Sealing element 10Facade construction 11Mullion / transom profile 12Seal 13Insulating glass pane 14Profile strip 15Insulating strip 16Screw groove 17Base body 18Clamping area 19Holding area 20Screw 21Heat sink / fire protection insert 22Insertion profile 100Fire protection coating

Claims

1. Profile frame construction (1), in particular for windows or doors in fire protection design, in which two or more hollow profiles (2, 3) made of metal, in particular aluminum, are connected to one another via heat-insulating insulating bars (4), characterized in that at least one of the insulating webs (4) and preferably all insulating webs (4) of the profile frame construction (1) is / are provided and in particular coated with an insulating layer-forming fire protection coating (100).

2. Profile frame construction (1) according to claim 1, wherein an inner hollow chamber is formed between at least one of the insulating webs (4) and at least one of the hollow profiles (2, 3), in which inner hollow chamber an insert (21) made of a fire protection material that foams up due to the action of heat is received or arranged, wherein the insert (21) is at least partially or regionally provided and in particular coated with an insulating layer-forming fire protection coating (100).

3. Profile frame construction (1) according to claim 1 or 2, wherein at least one of the hollow profiles (2, 3) and preferably all hollow profiles (2, 3) of the profile frame construction (1) is / are provided and in particular coated with an insulating layer-forming fire protection coating (100).

4. Profile frame construction (1) according to one of claims 1 to 3 or according to the preamble of claim 1, wherein the profile frame construction (1) has at least one connecting and / or fastening element, in particular in the form of a corner connector, characterized in that at least one component of the at least one connecting and / or fastening element of the profile frame construction (1) is at least partially or regionally provided and in particular coated with an insulating layer-forming fire protection coating (100).

5. Profile frame construction (1) according to one of claims 1 to 4, wherein the corresponding component or the corresponding components of the profile frame construction (1) is / are coated directly with the insulating layer-forming fire protection coating (100) via in particular a spray coating, brushing or dipping process.

6. Profile frame construction (1) according to one of claims 1 to 4, wherein the insulating layer-forming fire protection coating (100) is applied to a carrier substrate, and wherein the carrier substrate coated with the insulating layer-forming fire protection coating (100) is connected in particular in a materially bonded manner and preferably by adhesive bonding to the corresponding component or components of the profile frame construction (1).

7. Profile frame construction (1) according to claim 6, wherein the carrier substrate is a film with an adhesion layer.

8. Profile frame construction (1) according to one of claims 1 to 7, wherein the insulating layer-forming fire protection coating (100) - in particular depending on the desired fire resistance of the corresponding component of the profile frame construction (1) - has a layer thickness of approximately 200 µm to 5,000 µm and preferably a layer thickness of approximately 500 µm to approximately 3,000 µm.

9. Hollow profile (2, 3) for a fire protection construction, in particular for a profile frame construction (1) in fire protection design according to one of claims 1 to 8, wherein the hollow profile (2, 3) is equipped with at least one fire protection insert (21) which is designed to extend the service life of the hollow profile in the event of fire, characterized in that the at least one fire protection insert (21) is at least partially or regionally provided with an insulating layer-forming fire protection coating (100) and in particular coated.

10. Hollow profile (2, 3) according to claim 9, wherein the at least one fire protection insert (21) is directly coated with the insulating layer-forming fire protection coating (100); or wherein the insulating layer-forming fire protection coating (100) is a layer of a carrier substrate, which is connected in particular by a material bond and preferably by adhesive bonding to the at least one fire protection insert (21).

11. Hollow profile (2, 3) according to claim 9 or 10, wherein the insulating layer-forming fire protection coating (100) - in particular depending on the desired fire resistance of the hollow profile (2, 3) - has a layer thickness of approximately 200 µm to approximately 5,000 µm and preferably a layer thickness of approximately 500 µm to approximately 3,000 µm.

12. Facade or skylight (10) with a transom or mullion profile (11), in particular in the form of a hollow profile (2, 3), on which two spaced-apart glass contact seals are provided, against each of which a filling element (13), in particular in the form of a panel or a glass pane, rests, wherein the two filling elements (13) are held on the glass contact seals by a retaining strip and an insulating strip (15) is arranged between the end faces of the filling elements (13), which is fixed to a screw groove (16) of the transom or mullion profile (11), characterized in that at least one of the glass system seals and / or the retaining strip and / or the insulating strip (15) is provided with an insulating layer-forming fire protection coating (100) and in particular is coated.

13. Frame arrangement, in particular for facades or skylights (10) with a connecting profile and a sliding profile, each in particular in the form of a hollow profile (2, 3) and with a connector arrangement for connecting the connecting profile to the sliding profile, characterized in that at least one component of the connector arrangement is provided, and in particular coated, at least partially or regionally with an insulating layer-forming fire protection coating (100).

14. Method for increasing the fire resistance of a profile frame construction (1), in particular for windows or doors, wherein at least one component of the profile frame construction (1) is provided with an insulating layer-forming fire protection coating (100) and is coated in particular by means of a spray coating process or dipping process.

15. The method according to claim 14, wherein the at least one component of the profile frame construction (1) is coated with the intumescent fire protection coating (100) using a spray coating, brushing or dipping process, and wherein the at least one component of the profile frame construction (1) coated with the intumescent fire protection coating (100) is subsequently dried in the course of a drying process associated with a temperature increase, wherein during the drying process the at least one component of the profile frame construction (1) coated with the intumescent fire protection coating (100) is increased to a temperature which is below a critical temperature for the response of the intumescent fire protection coating (100).

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