Profile arrangement with fire protection insert

Abstract

Described and illustrated is a profile arrangement (1,20,23,25,30,40,50) preferably for windows, doors or facade elements, with two metallic profile elements (2) and at least one fire protection insert (5,21,32,42,51) provided at least sectionally between the profile elements (2), wherein the fire protection insert (5,21,32,42,51) has at least one ablative coolant (8). In order to better meet fire protection requirements simply and at low cost, it is provided that the fire protection insert (5,21,32,42,51) has two spaced-apart mounting elements (6,22,31,41,52) each carrying at least one ablative coolant (8) and at least one connecting element (10) connecting the mounting elements (6,22,31,41,52) and that each of the two profile elements (2) is assigned a mounting element (6,22,31,41,52) of the fire protection insert (5,21,32,42,51).

Description

[0001] The invention relates to a profile arrangement, preferably for windows, doors or facade elements, comprising two metallic profile elements and at least one fire protection insert provided at least partially between the profile elements, wherein the fire protection insert comprises at least one ablative coolant.

[0002] Profile assemblies for windows, doors, facade elements, and the like have long been known in various designs. These profile assemblies are typically thermally insulated, with a metallic profile element facing each exterior surface. At least one of these profile elements forms at least part of a visible side of the assembly. Often, however, the two opposing profile elements each form part of the opposite visible sides. To prevent thermal bridging between the metallic profile elements, they are typically connected in a core area by so-called insulating webs made of plastic. These insulating webs are designed to conduct very little heat from one profile element to another.Insulating webs could be omitted if necessary, for example, because other means of thermal insulation are provided or because high thermal insulation is not required for the profile arrangement. Corresponding thermally insulated profile arrangements are known, for example, from DE 10 2011 117 070 A1, EP 2 116 685 A2 and EP 3 447 229 A1.

[0003] For many applications, certain fire protection requirements are imposed on the profile assemblies of the aforementioned type, whether thermally insulated or not. For example, the profile assemblies must withstand a fire for a specific period of time. To achieve this, it has already been proposed to equip the profile assemblies with fire-resistant inserts containing an ablative coolant. In the event of a fire, this coolant releases water under the influence of heat, thus cooling the profile element. This retains the heat for a certain period and, if necessary, prevents the profile element from melting or being otherwise damaged, either immediately or after a delay. In this way, the service life of the profile element or the profile assembly as a whole is to be extended in the event of a fire.

[0004] An ablative coolant is a material that can also be described as an ablative building material. Through chemical and / or physical processes, the coolant extracts some of the heat generated in a fire from its surroundings to cool the profile element. The coolant can, for example, at least partially ceramicize, evaporate, sublimate, or melt, and typically contains hydrated minerals that can release water. These are then referred to as mineral coolants. After the completion of the chemical and / or physical processes that cause the cooling, a non-combustible mass often remains, which also acts as a thermal insulator. The coolant expands only relatively little when exposed to heat.

[0005] In addition to ablative coolants, intumescent materials are also known from the fire protection sector. These materials occupy a comparatively small volume at room temperature but expand considerably under the influence of heat, for example at 150 °C to 200 °C. The intumescent material can expand into a foam until a highly insulating, thermally stable foam layer is formed, which at least temporarily protects the parts of profile elements located behind or enclosed by the insulation layer from absorbing excessive heat. The volume of the intumescent material increases, for example, by a factor of at least 10, preferably by a factor of at least 20, and particularly by a factor of at least 40.

[0006] In the event of a fire, wavelength-selective materials or coatings can also contribute to the protection of the profile elements. These materials exhibit low emissivity and are therefore also referred to as "low-E" materials. They can be metals or metal oxides, such as zinc oxide. Low emissivity means that the materials radiate a small amount of heat. This amount of heat is significantly less than that of the substrate onto which the wavelength-selective materials are applied. The emissivity can be reduced by at least a factor of 2, preferably by at least a factor of 3, and particularly by at least a factor of 5.

[0007] The existing profile configurations equipped with fire protection systems only exhibit partially satisfactory properties. Therefore, further improvements are needed.

[0008] Therefore, the present invention is based on the objective of designing and further developing the profile arrangement of the type mentioned at the outset and explained in more detail above in such a way that the fire protection requirements can be met more easily and at lower cost.

[0009] This problem is solved in a profile arrangement according to the preamble of claim 1 in that the fire protection insert has two mounting elements spaced apart from each other, each carrying at least one ablative coolant, and at least one connecting element connecting the mounting elements, and that each of the profile elements is assigned a mounting element of the fire protection insert.

[0010] It has already been proposed to assign separate fire protection inserts to the two profile elements in order to cool each profile element with its own ablative coolant. However, using a fire protection insert with two spaced-apart mounting elements, each carrying at least one ablative coolant and assigned to opposing profile elements, has the advantage that the profile arrangement is more stable in the event of a fire and the corresponding elements retain their position better. The coolants can therefore fulfill their intended function much more effectively. Furthermore, it has been shown that the disadvantages associated with connecting the mounting elements via the connecting element are tolerable compared to the advantages achieved in the event of a fire. The fire protection insert is not only more complex and expensive to manufacture, but also results in increased weight.Furthermore, the connecting element forms a kind of thermal bridge between the two profile elements.

[0011] In a first, particularly preferred embodiment of the profile arrangement, the fire protection insert is connected to the two profile elements, specifically separately. In the case of a separate connection, the fire protection insert is not directly connected to one profile element and then, via that element, to the other. Nor is it directly connected to another component of the profile arrangement, such as an insulating web, and thus to the two profile elements. This serves to stabilize the profile arrangement in the event of a fire. For the same reason, it can be advantageous for the fire protection insert to be directly and / or positively locked to the two profile elements. For the sake of simple design and assembly, it can be beneficial for the fire protection insert to be connected to the profile elements via the mounting elements.

[0012] The fire protection insert can be installed particularly easily by simply inserting it. This is especially true if the insertion occurs longitudinally along the profile elements, the profile arrangement, and / or the fire protection insert itself. Regardless of this, at least one profile element for inserting the fire protection insert can have a preferably U-shaped and / or C-shaped receptacle.

[0013] To ensure the fire protection insert is securely and reliably positioned, even in the event of a fire, it can be positively engaged in at least one direction at two different retaining sections of a profile element. This is even more effective if this engagement occurs in two opposite directions. For the transfer of the forces involved, it is advantageous if these two directions each point from one profile element to the other and run perpendicular to the longitudinal extent of the profile elements, the profile arrangement, and / or the fire protection insert.

[0014] Alternatively or additionally, the fire protection insert can be positively engaged with retaining sections on each of the two profile elements in two other opposite directions. These directions can then run between the profile elements and / or perpendicular to the directions described above. In any case, however, these directions preferably run transversely to the longitudinal extent of the profile elements, the profile arrangement, and / or the fire protection insert.

[0015] If the fire protection insert is made of metal, it remains sufficiently stable even in the event of a fire and can be manufactured easily with minimal material usage. This is particularly true for steel, especially stainless steel. Aluminum offers the additional advantage of low weight. The profile elements can also be made of aluminum or steel, allowing for simple manufacturing combined with high rigidity. Regardless of the material chosen, the rigidity can be further increased by designing at least one profile element as a hollow profile.

[0016] For a fire protection insert that is easy to manufacture and lightweight, it is advantageous to use a formed sheet metal strip. Alternatively or additionally, the fire protection insert can also have a multitude of ribs, at least in sections. These ribs are preferably spaced apart, particularly to ensure sufficient stability of the fire protection insert, especially the connecting element. This reduces weight and decreases heat conduction across the fire protection insert. This is particularly beneficial when the ribs are located in the area of ​​the connecting element. The ribs can preferably be aligned at least substantially in the direction of the connection between the two mounting elements via the connecting element. It is especially simple if the ribs are aligned at least substantially parallel to each other.

[0017] It is easy to manufacture yet stable if the fire protection insert has a cross-section that is at least substantially H-shaped, perpendicular to the longitudinal direction of the fire protection insert and / or perpendicular to the longitudinal direction of the profile elements. A Z-shaped cross-section is even easier to produce by forming. A U-shaped cross-section can be material-saving and therefore cost-effective. Alternatively or additionally, at least one mounting element can have a U-shaped and / or C-shaped cross-section perpendicular to the longitudinal direction of the mounting element, for example, to stiffen the mounting element or to facilitate installation.

[0018] The coolant of the associated mounting element can advantageously also be accommodated in the U-shaped and / or C-shaped cross-section of the at least one mounting element. The U-shaped and / or C-shaped cross-section of the at least one mounting element is open to the associated profile element to ensure cooling of the profile element by the ablative coolant.

[0019] In principle, it is advantageous for cooling the profile elements if the at least one ablative coolant is arranged on the side of the mounting element facing the associated profile element, in particular between the associated profile element and the associated mounting element.

[0020] To further increase the resistance and service life of the profile assembly in the event of a fire, the fire protection insert, or at least one mounting element, can incorporate at least one intumescent material. In the event of a fire, the intumescent material expands in volume and protects the area behind it, or the area of ​​the profile assembly enclosed by the intumescent material, at least partially and at least temporarily from the effects of heat.

[0021] Alternatively or additionally, the fire protection insert or at least one mounting element can have a wavelength-selective material. For simplicity, this can be a coating made of a wavelength-selective material. The wavelength-selective material emits a lower heat flux than would be the case for the fire protection insert or the at least one mounting element without the wavelength-selective material. In this way, the profile assembly is also at least partially and at least temporarily protected from heat exposure.

[0022] A mineral-based coolant, particularly one containing a hydrated mineral, is suitable as an ablative coolant due to its superior cooling properties. It is especially advantageous if the ablative coolant includes an intumescent agent to perform various functions simultaneously or sequentially. Alternatively or additionally, for the same reason, it can also be advantageous if the intumescent agent includes an ablative coolant. Of course, separate layers of intumescent agent and ablative coolant, and / or mixtures thereof, can also be used.

[0023] If the intumescent material is arranged on the side of the at least one mounting element facing away from the associated profile element, the profile element can be cooled by the coolant, and the profile element or the opposing profile element can be at least partially shielded from the heat in the event of a fire. Alternatively or additionally, the wavelength-selective material can be arranged on the side of the at least one mounting element facing away from the associated profile element. In this case as well, increased heat emission towards at least one of the two profile elements is avoided, while the profile element associated with the coolant can be cooled by the coolant.

[0024] To easily provide a thermally insulated profile assembly, the two profile elements are connected to each other via insulating webs as needed. It is advantageous if at least two insulating webs are provided on opposite sides of the fire protection insert, particularly adjacent to it. In other words, the fire protection insert is positioned between two, preferably adjacent, insulating webs. This allows the fire protection insert to be integrated into the profile assembly in a space-saving manner while simultaneously being sufficiently large to significantly increase the service life of the profile assembly in the event of a fire.

[0025] To achieve good thermal insulation of the profile assembly, the insulating strips can be made of a material with a lower specific thermal conductivity compared to the material of the profile elements. Plastic is particularly suitable for this purpose, as the insulating strips can also be easily manufactured in appropriate shapes.

[0026] The invention will now be explained in more detail with reference to a drawing that merely illustrates exemplary embodiments. The drawing shows Fig. 1 a first profile arrangement according to the invention in a sectional view transverse to the longitudinal extent of the profile arrangement, Fig. 2A-C a second profile arrangement according to the invention in three different variants in a sectional view transverse to the longitudinal extent of the profile arrangement, Fig. 3 a third profile arrangement according to the invention in a sectional view transverse to the longitudinal extent of the profile arrangement, Fig. 4 a fourth profile arrangement according to the invention in a sectional view transverse to the longitudinal extent of the profile arrangement and Fig. 5 a fifth profile arrangement according to the invention in a sectional view transverse to the longitudinal extent of the profile arrangement.

[0027] In the Fig. Figure 1 shows a profile arrangement 1 with two outer profile elements 2, which can optionally be part of a window frame, a door frame, or a facade frame. However, the actual application of the profile arrangement 1 is of rather minor importance here. The profile elements 2 are made of aluminum and are designed as hollow profiles. The profile arrangement 1 is designed as a thermally insulating profile arrangement 1, in which the profile elements 2 are connected to each other via insulating bars 3 made of plastic. For this purpose, the insulating bars 3 are inserted with their free ends into corresponding grooves 4 of the profile elements 2.

[0028] Between the insulating webs 3, a steel fire protection insert 5 is provided, comprising two mounting elements 6, each assigned to and connected to the opposing profile elements 2. The mounting elements 6 also carry ablative coolants 7 on their sides facing the corresponding profile elements 2. The coolants 7 are thus located on opposite, outward-facing sides of the fire protection insert 5. On their sides facing away from the corresponding profile elements 2, i.e., on the sides of the mounting elements 6 facing each other, the mounting elements 6 carry an intumescent coating 8. The mounting elements 6 are inserted into receptacles 9 of the profile elements 2 and held there in a form-fitting manner. Furthermore, the mounting elements 6 are connected to each other via a connecting element 10.The fire protection insert 5 is thus Z-shaped in cross-section, with the cross-section running in the plane of the drawing and therefore perpendicular to the longitudinal extent of the fire protection insert 5.

[0029] The receptacles 9 of the profile elements 2 for receiving the mounting elements 6 are at least substantially C-shaped in cross-section and open on opposite sides. The free ends 11 of the C-shaped receptacles 9 each form retaining sections 12 for the positive locking of the mounting elements 6. The retaining sections 12 of each receptacle 9 hold the corresponding mounting element 6 in opposite directions R1, R2 and form stops for the mounting elements 6 in these directions R1, R2. The right receptacle 9 forms retaining sections 12 and stops against the mounting element 6 being pulled out in direction R1 of the opposite left receptacle 9 or the left profile element 2. The left receptacle 9, in turn, forms retaining sections 12 and stops against the mounting element 6 being pulled out in direction R2 of the opposite right receptacle 9 or the right profile element 2, thus in the opposite direction R2.The aforementioned directions R1,R2 preferably extend in the plane of the drawing and thus perpendicular to the longitudinal extent of the fire protection insert 5.

[0030] The receptacles 9 of the profile elements 2 for the mounting elements 6 each form two further retaining sections 13, 14, which act as stops for the mounting elements 6. The retaining sections 13, 14 and / or stops limit the movement of the mounting elements 6 in opposite directions R3, R4 parallel to the gap between the profile elements 2. In each of these directions R3, R4, the movement of the fire protection insert 5 is limited by one retaining section 13, 14 and / or stop of each receptacle 9.

[0031] In the Fig. Figures 2A-C show three similar variants of an alternative profile arrangement 20. Profile arrangement 20 largely corresponds to profile arrangement 1 of the Fig. 1. This is why the same reference symbols are used for identical components, and only the differences are discussed below. One difference is the profile arrangement 20 according to... Fig. 2A consists in the fire protection insert 21 forming a cross-section that is at least substantially H-shaped. Furthermore, the mounting elements 22 have a U-shaped cross-section in which the coolant 7 is arranged. The U-shaped cross-sections of the mounting elements 22 are open in the direction of the associated profile elements 2. Additionally, the intumescent material 8 is provided on both sides of the connecting element 23, which extends at least substantially perpendicular to the mounting elements 22. The intumescent material 8 extends at least substantially over the entire width of the openings of the C-shaped recesses 9 of the profile elements 2.

[0032] The profile arrangement 23 according to Fig. 2B differs from profile arrangement 20 according to Fig. 2A in that a wavelength-selective material 24 is provided instead of the intumescent coating material 8. The wavelength-selective material 24 is provided on the sides of the mounting elements 22 facing away from and towards the coolant 7. The wavelength-selective materials 24 extend at least substantially over the entire width of the openings of the C-shaped receptacles 9 of the profile elements 2.

[0033] The profile arrangement 25 according to Fig. 2C differs from the profile arrangement 20,23 according to Fig. 2A-B, wherein on the sides of the mounting elements 22 facing away from the coolant 7 and facing each other, an intumescent coating 8 and a wavelength-selective material 24 are provided in superimposed layers. The layers extend at least substantially over the entire width of the openings of the C-shaped receptacles 9 of the profile elements 2.

[0034] In the Fig. Figure 3 shows another alternative profile arrangement 30, which differs from the profile arrangement 20, 23, 25 of the Fig. 2A-C differs only in that the mounting elements 31 of the fire protection insert 32 are not plate-shaped, but have at least substantially U-shaped, in particular C-shaped, recesses on their rear sides facing away from and towards the associated profile elements 2 for receiving an intumescent material 8. A wavelength-selective material 24 could be provided instead of or in addition to the intumescent material 8.

[0035] In the Fig. Figure 4 shows another alternative profile arrangement 40, which differs from the profile arrangement 20, 23, 25 of the Fig. 2A-C differs only in that the mounting elements 41 of the fire protection insert 42 have edges 43 that form-fittingly engage the free ends of the C-shaped receptacles 9 of the profile elements 2 from the outside to the inside with respect to the receptacles 9. Intumescent material 8 is provided on the sides facing away from the profile elements 2. This material is located outside the C-shaped receptacles 9 of the profile elements 2 and extends laterally beyond the openings of the C-shaped receptacles 9 of the profile elements 2. A wavelength-selective material 24 could be provided instead of or in addition to the intumescent material 8.

[0036] In the Fig. Figure 5 shows another alternative profile arrangement 50, which differs from profile arrangement 1 of the Fig.1 differs in that the fire protection insert 51 is at least substantially U-shaped and, with its mounting elements 52 forming the lateral legs of the U, engages positively in the at least substantially C-shaped recesses 9 of the profile elements 2, thereby positively engaging behind the free ends 11 of the C-shaped recesses 9. The intumescent material 8 provided on opposite sides of the mounting elements 52 extends over a width that is significantly less than the width of the opening of the C-shaped recesses 9 of the profile element 2. Instead of or in addition to the intumescent material 8, a wavelength-selective material 24 could be provided. Reference symbol list 1 Profile arrangement 2 profile elements 3 insulating strip 4 groove 5 Fire protection operation 6 Mounting element 7 ablative coolant 8 Intumescent layer formers 9th entry 10 connecting element 11 free ending 12 Stop section 13 Stop section 14 Stop section 20 Profile arrangement 21 Fire protection operation 22 Mounting element 23 Profile arrangement 24 wavelength-selective material 25 Profile arrangement 30 Profile arrangement 31 Mounting element 32 Fire protection operation 40 Profile arrangement 41 Mounting element 42 Fire protection operation 43 Rand 50 Profile arrangement 51 Fire protection operation 52 Mounting element R1-R4 direction QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2011 117 070 A1

[0002] EP 2 116 685 A2

[0002] EP 3 447 229 A1

[0002]

Claims

[1] Profile arrangement (1, 20, 23, 25, 30, 40, 50) preferably for windows, doors or facade elements, with two metallic profile elements (2) and at least one fire protection insert (5, 21, 32, 42, 51) provided at least partially between the profile elements (2), wherein the fire protection insert (5, 21, 32, 42, 51) has at least one ablative coolant (8), characterized by that the fire protection insert (5,21,32,42,51) has two mounting elements (6,22,31,41,52) spaced apart from one another, each carrying at least one ablative coolant (8), and at least one connecting element (10) connecting the mounting elements (6,22,31,41,52), and that each of the two profile elements (2) is assigned a mounting element (6,22,31,41,52) of the fire protection insert (5,21,32,42,51). [2] Profile arrangement according to claim 1, characterized bythat the fire protection insert (5,21,32,42,51) is connected to the two profile elements (2), preferably separately, in particular directly and / or positively, and / or that the fire protection insert (5,21,32,42,51) is connected to the profile elements (2) via the mounting elements (6,22,31,41,52). [3] Profile arrangement according to claim 1 or 2, characterized by that the fire protection insert (5,21,32,42,51) is connected to the profile elements (2) by inserting them, in particular in the longitudinal direction of the profile elements (2), into preferably U-shaped or C-shaped receptacles (9) of the profile elements (2). [4] Profile arrangement according to claim 2 or 3, characterized bythat the fire protection insert (5, 21, 32, 42, 51) is held in a form-fitting manner on each of the two profile elements (2) in two opposite directions (R1, R2) each pointing from one profile element (2) to the other profile element (2) transversely to the longitudinal extent of the profile elements (2) on two spaced-apart holding sections (12) and / or that the fire protection insert (5, 21, 32, 42, 51) is held in a form-fitting manner on each of the two profile elements (2) in two opposite directions (R3, R4) each running between the profile elements (2) transversely to the longitudinal extent of the profile elements (2) on one holding section (13, 14). [5] Profile arrangement according to one of claims 1 to 4, characterized bythat the fire protection insert (5,21,32,42,51) is formed from a metal, preferably from aluminum or steel, in particular stainless steel, and / or that the profile elements (2) are formed from aluminum or steel and / or that the profile elements (2) are designed as hollow profiles. [6] Profile arrangement according to one of claims 1 to 5, characterized by that the fire protection insert (5,21,32,42,51) is made from a formed sheet metal strip and / or that the fire protection insert (5,21,32,42,51) has a plurality of webs in sections, preferably in the region of the connecting element (10). [7] Profile arrangement according to one of claims 1 to 6, characterized bythat the fire protection insert (5,21,32,42,51) has an at least substantially H-shaped, Z-shaped or U-shaped cross-section transverse to the longitudinal direction of the fire protection insert (5,21,32,42,51) and / or the profile elements and / or that the at least one mounting element (22,31,41,52) has a U-shaped cross-section transverse to the longitudinal direction of the mounting element (22,31,41,52). [8] Profile arrangement according to claim 7, characterized by that the coolant (7) of the associated mounting element (22, 41, 52) is accommodated in the U-shaped cross section of the at least one mounting element (22, 41, 52) and that, preferably, the U-shaped cross section is open to the associated profile element (2). [9] Profile arrangement according to one of claims 1 to 8, characterized bythat the at least one ablative coolant (7) is arranged on the side of the mounting element (6, 22, 31, 41, 52) facing the associated profile element (2), in particular between the associated profile element (2) and the associated mounting element (6, 22, 31, 41, 52). [10] Profile arrangement according to one of claims 1 to 9, characterized by that the fire protection insert (5, 21, 32, 42, 51), in particular at least one mounting element (6, 22, 31, 41, 52), has at least one insulating layer former (8) and / or that the fire protection insert (21), in particular at least one mounting element (22), has a wavelength-selective material (24), in particular a wavelength-selective coating. [11] Profile arrangement according to one of claims 1 to 10, characterized bythat the ablative coolant (7) comprises at least one mineral, in particular hydrated mineral, and / or that the ablative coolant (7) comprises an intumescent layer former (8) and / or the intumescent layer former (8) comprises an ablative coolant (7). [12] Profile arrangement according to one of claims 10 or 11, characterized by that the insulating layer former (8) is arranged on the side of the at least one mounting element (6, 22, 31, 41, 52) facing away from the associated profile element (2) and / or that the wavelength-selective material (24) is arranged on the side of the at least one mounting element (22) facing away from the associated profile element (2). [13] Profile arrangement according to one of claims 1 to 12, characterized bythat the two profile elements (2) are connected to one another via insulating webs (3) and that, preferably, at least two insulating webs (3) are provided on opposite sides of the fire protection insert (5,21,32,42,51) adjacent to the fire protection insert (5,21,32,42,51). [14] Profile arrangement according to claim 13, characterized by that the insulating webs (3) are formed from a material with a lower specific thermal conductivity compared to the material of the profile elements (2) and that, preferably, the insulating webs (3) are formed from plastic.

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