DE9321360U1 - Fire retardant component - Google Patents

Description

M 2916-1 G/VIII

European patent application 93106945.4-2312
Trübe & Kings KG, D-56767 Uersfeld/Bahnhof

Fire-retardant component

The present invention relates to a fire-retardant component for the production of fire protection elements, such as doors, windows and the like, with an aluminum core profile provided with a thermal break, which in particular carries fire protection glazing, and with at least one aluminum shell profile arranged on both sides of the core profile, which forms a closed chamber with the core profile.

Such a fire-retardant component is known from German patent 30 09 729. This known fire-retardant component has an aluminum core profile, which in particular supports fire-resistant glazing, and at least one aluminum shell profile arranged on both sides of the core profile, which forms a closed chamber with the core. Only the core profile has a supporting function for the fire-resistant glazing. The functionality of this component is based on the fact that the aluminum fire-resistant shell melts when exposed to fire and thus has a heat-consuming effect.

whereby the heat influence of the core is initially significantly reduced. In addition, the aluminum frame used has a very low thermal conductivity and heat capacity, so that little heat energy is transferred to the side of the aluminum frame facing away from the fire. The core profile can have a thermal separation in its cross walls using non-combustible building materials of the building material classes Al and A2 according to DIN 4102, Part 1, which are connected between individual core parts using known fastening means. DIN 4102 refers to building materials of various types, such as concrete or wood, and includes powdered building materials and even cladding. This well-known fire-retardant component is particularly suitable for fire resistance class F30 according to DIN 4102.

The present invention is based on the task of improving the generic, known fire-retardant component in such a way that it is at least suitable for fire resistance class F60, but in particular F90 according to DIN 4102, i.e. that the stability and the temperature reduction are improved in such a way that a service life of up to two to three times is achieved in comparison to the known fire-retardant component.

According to the invention, this is achieved in that the core profile and the shell profiles arranged on both sides of the core profile form a load-bearing profile, whereby this load-bearing profile is thermally separated by web profiles made of mechanically strong material with low thermal conductivity and integrated into the transverse walls of the core profile.

It is also advantageous that the chambers are filled with a heat-resistant insulating and supporting profile body,

which is connected to the core in a form-fitting or form- and force-fitting manner. Alternatively or additionally, the core profile can also be filled with a corresponding insulating and supporting profile, whereby there is also advantageously a form-fitting or force-fitting connection with the frame profile (core and/or shell profile).

The thermal separators in the cross walls of the core and, if applicable, the aluminum shells significantly reduce the heat transfer from the fire side through the core to the opposite chamber, so that the overall service life of the load-bearing profile is increased. It is important that the aluminum shell facing away from the fire side also supports the core profile; this ensures stability even when the core has already been affected by the heat. The support and insulating profile bodies arranged within the chambers and/or the core also significantly reduce the influence of heat radiation on or via the core profile in the event of a fire. In addition, this inner profile preferably also takes on load-bearing functions through the existing form-fitting connection with the core and/or shell profile, which further increases stability.

Further advantageous embodiments of the invention are contained in the subclaims. Overall, the invention creates a system of fire-retardant components with which fire protection elements such as doors, windows or fixed wall elements can be constructed, which either have glazing or another fire-resistant filling of fire resistance classes F60 to F90.

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The invention is explained in more detail with reference to the embodiments shown in the accompanying drawings. They show:

Fig. 1 shows a section through a fire-retardant component, which is designed as a frame with fixed glazing,

Fig. 2 a section through a component for forming a single-leaf door in the area of the door lock side,

Fig. 3 a section through the component according to Fig. 2 on the door hinge side,

Fig. 4 a section through the component according to Fig. 2 in the area of the door base,

Fig. 5 a section through a component as a double-leaf door in the area of the door centre plate,

Fig. 6 a cross-section through an embodiment of a component according to the invention, which here - somewhat analogous to Fig. 1 - is designed as a frame profile with a fixed glazing,

Fig. 7 shows a cross section through an arrangement of components according to the invention in a configuration similar to that in Fig. 3 as door frame and door leaf profiles,

Fig. 7a is a partial view of Fig. 7 in an advantageous further development,

Fig. 8 a cross section through an arrangement of components according to the invention in the transition area from a frame profile holding a fixed glazing via a door frame profile connected to it to a door leaf profile,

Fig. 9 shows a cross section through an arrangement of components according to the invention in the area of a central cover of a double-leaf door, approximately as shown in Fig. 5,

Fig. 10 shows an alternative embodiment to the arrangement according to Fig. 8.

In Fig. 1 to 5, the load-bearing profile is not thermally separated according to the invention by web profiles made of mechanically strong material with low thermal conductivity integrated into the core, but only in transverse walls of the shell profile, but such a separation could additionally be provided for these designs.

In the various figures of the drawing, identical or functionally corresponding parts are always provided with the same reference symbols.

In Fig. 1, a cross-section through a fixed glazing with a fire-retardant component is shown as an example. This fixed glazing consists of a frame profile 1 and a heat-resistant pane 2. The frame profile 1 consists of a core profile 3 made of aluminum, which is preferably designed as a closed hollow profile with at least an approximately rectangular cross-section. On the longitudinal walls 4 of the core, which run parallel to the window plane X-X,

Shell profiles 6 made of aluminum, which enclose a closed chamber 7 with the core profile 3, are attached to each profile 3.

In the designs according to Fig. 1 to 5, the shell profiles 6 are thermally separated in their transverse walls 8, while they are otherwise formed in one piece with the core profile 3 in the connection area. This thermal separation is achieved by web profiles 9, which are inserted in the transverse walls 8 of the shell profiles 6 in a force-fitting and/or form-fitting manner. For this purpose, U-shaped clamping profiles 10 are formed in the transverse walls 8, opposite one another, between whose U-legs 11 the web profiles 9 are held. The web profiles 9 consist of a mechanically strong material that is poorly heat-conducting and melts under the influence of heat. Polyamide or a casting resin is particularly suitable as a manufacturing material. The web profiles 9 interrupt the flow of heat from the outside to the inside into the core profile 3. It is also intended that the chambers 7 are filled by a support and insulating profile 12. This support and insulating profile 12 is connected to the core profile 3 in a form-fitting or form-fitting and force-fitting manner. The support and insulating profile 12 consists of heat-resistant material which, according to the standard temperature-time curve (ETK), is heat-resistant at a temperature of 1000 K for a period of 90 minutes. This support and insulating profile 12 takes on a supporting function in the event of a fire when the shell profile 6 exposed to the fire melts. The support and insulating profile 12 is held in a form-fitting manner by back-formings 13 formed behind the U-shaped clamping profiles 10. In order to avoid fracture lines in the clamping profiles 10 caused by the formation of edges, the

To control the movement of the support and insulating profiles 12, lugs 14 are formed on the inner U-legs 11, so that the risk of breakage is reduced. On the transverse side of the frame profile 1 facing the window pane 2, glass retaining strips 21 and cover profiles 22 are fastened on both sides of the window pane 2 in a known manner, as can be seen from DE-PS 3 0 0 9 72 9. According to the invention, the glass retaining strips 21 are fastened using steel screws (not shown) in the area in front of the web profiles 9, each seen from the outer long sides of the frame profile 1, and a steel bridge strip 23 is fastened using a steel screw to the side of the core profile 3 facing the window pane 2. The bridge strip 23 connects the glass retaining strips 21, so that their fastening screws also run through the bridge strip 23. Furthermore, a fire-retardant and heat-resistant seal is provided in a known manner between the window pane 2 and the frame profile 1.

These basic design features of a fire-retardant component described above are common to all fire-retardant components according to the invention shown in Figs. 1 to 5, with identical parts being provided with the same reference numbers. However, the individual components of Figs. 1 to 5 have special designs due to their additional function as fixed glazing frame profile, door frame profile, door leaf profile or due to special requirements in the gap area between the door frame profile and the door leaf profile or between two door leaf profiles.

Thus, in the embodiment according to Fig. 2, between a door frame profile 5 and a door leaf profile 15, an oblique

The gap 16 running to the window plane X-X is formed in that the transverse sides of the profiles 5, 15 facing each other run essentially obliquely to the window plane X-X, in that the corresponding opposing transverse walls 8 of the shell profiles 6 run parallel to each other at the same angle to the window plane X-X and the transverse wall of the core profile 3 runs perpendicular to the window plane X-X. The angle to the window plane X-X and the gap width are dimensioned in such a way that an arcuate opening movement of the door leaf 15 past the fixed door frame profile 5 is possible without hindrance. This design has the advantage that the two profiles 5, 15 can have the same profile, whereby in their installation position they are arranged rotationally symmetrically to an axis of symmetry running in the window plane X-X through the middle of the gap 16. Furthermore, it is provided that sealing inserts 17 are attached in the gap area parallel to the transverse walls of the core profile 3 and the shell profiles 6. These sealing inserts 17 consist of a material that swells under the influence of heat, so that the gap 16 is sealed in the event of a fire. Furthermore, the anchors for a door latch 18 and an associated latch lock 19 are provided in the core profile 3.

Furthermore, it can be seen in Fig. 2 that a stop strip 24 is formed in the extension of the wider front side of the door frame profile 5 or the door leaf profile 15, which also serves to cover the gap. The gap between the door frame profile 5 and a wall W is sealed in a known manner using suitable heat-resistant materials.

In Fig. 3, the door hinge side of the door frame profile 5 and

of the door leaf profile 15 according to Fig. 2, where the same parts are marked with the same reference numbers as in Fig. 2. Here, inner U-shaped steel fitting parts 26 are inserted in the cavity of the core profile 3, to which the outer door fitting, the door hinge 25, is attached via screw connections 27. Furthermore, the inner steel fitting part 26 of the door leaf profile 15 has a steel pin 28, which projects through the transverse side of the core profile 3 facing the door frame profile 5 into a recess 29 in the opposite transverse side of the door frame profile 5. The steel pin 28 serves to support the door leaf profile 15 in the door frame profile 5 in the event of a fire, when the outer door hinge 25 has melted away.

In Fig. 4, the door leaf profile 15 according to Fig. 2 is shown in the area of the door foot, with the same parts as in Fig. 2 being identified with the same reference numbers. In this case, an L-shaped smoke protection profile 31 is attached to the shell profile 6 pointing away from the interior in the angle area between its front side and the transverse side facing a floor 34, the leg 32 of which, running parallel to the transverse wall 8, is connected to the core profile 3 for thermal decoupling via a web profile 33, which corresponds in material to the web profile 9. In this case, a fastening of the web profile 33 is provided, which is structurally adapted to that of the web profiles 9. A sealing lip 30 is attached to the side of the leg 32 facing the floor 34. The smoke protection profile 31 is supported in a profile opening 43 of the door leaf profile 15 via a nose 42 formed on its leg running parallel to the window plane X-X.

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Fig. 5 shows a cross section through the door leaf I-profile 15 according to Fig. 2 when used with a double-leaf door, with the same parts as in Fig. 2 being identified with the same reference numbers. In this case, a non-load-bearing metal center profile 36 is inserted into a door center faceplate 35 and fastened to one of the door leaf profiles 15, namely to its core profile 3. The center profile 36 is also designed as an aluminum three-chamber profile, corresponding to the frame profile 1, to match the course of the door center faceplate 35. In this case, the outer shell profiles 37, which are arranged on both sides of a hollow core profile 38, each have a support and insulating profile 12 on the inside, to which they are positively connected. In their transverse walls, the shell profiles 37 each have a separating slot 39 for thermal separation.

In order to achieve a temperature reduction on the inside of the double-leaf door in the area of the door center faceplate 35, insulating shells 40 are placed on the inner shell profiles 6. These insulating shells 40 widen the frame profile on both sides and have a right-angled extension 41 with which they rest against the window pane 2. These insulating shells 40 are filled with a heat-resistant material on the inside. Sealing inserts 17 are installed on the exposed transverse sides of the door center profile 36 to seal the gap in the event of a fire.

The fire-retardant component in the previously described designs according to Figs. 1 to 5 is particularly suitable if the core profile 3 according to the invention in its at least approximately perpendicular to the pane plane X-X

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Transverse walls 45 are thermally separated by web profiles 9, due to its design for fire resistance class F9 0, i.e. it has a stability of at least 90 minutes in the event of fire, with a maximum average temperature of 140° on the side facing away from the fire during this period.

In the embodiments of a fire-retardant component according to the invention illustrated in Figs. 6 to 10, it is now provided that the core profile 3 is thermally separated by web profiles 9 in its transverse walls 45 running at least approximately perpendicular to the pane plane X-X, in a manner analogous to the transverse walls 8 of the shell profiles 6 forming the chambers 7 according to Figs. 1 to 5. Thus, with regard to the design, material and mounting of the web profiles 9, reference can be made in full to the relevant explanations for Figs. 1 to 5, especially since in Figs. 6 to 10 the same parts are provided with the same reference numerals.

Furthermore, in the embodiments according to Fig. 6 to 10, the cavity formed by the core profile 3 is filled with an insulating profile 12, for which reference is also made to the relevant description parts for Fig. 1 to 5. However, it should be mentioned that the profile 12 primarily has a thermal insulating function, whereby it can also be designed to be mechanically load-bearing or non-load-bearing.

The designs of a fire-retardant component according to the invention illustrated in Fig. 6 to 10 are suitable at least for a fire resistance class F60 according to DIN 4102 (standing time at least 60 minutes in the event of fire). It is

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but to emphasize that an increase in the fire resistance class to at least F90 can be achieved if the thermal separation of the core profile 3 shown in Figs. 6 to 10 and, if necessary, the filling of the core profile 3 with the insulating profile 12 in combination with the thermal separation of the shell profiles 6 or chambers 7 shown in Figs. 1 to 5 and, if necessary, their filling with the insulating and supporting profiles 12 is provided.

In the following, specific features of the individual embodiments of Figs. 6 to 10 will be explained in more detail.

In these embodiments, no separate glass retaining strips are generally provided, but these are formed directly by the respective frame profile 1 (or 5 or 15) in that the core profile 3 has a corresponding extension 4 6 parallel to the pane plane X-X, which is also filled with the insulating profile 12. The shell profile 6 and the chamber 7 formed by it also extend over the area of the extension 46 of the core 3. On the opposite side, a holding profile 47 takes over the glass holding function, whereby this holding profile 47 is preferably connected (clipped) to the frame profile 1, 5 or 15 in a locking manner and, analogous to the shell profiles 6, also forms a chamber (cavity). Elastic profile sealing strips 48 are arranged between the extension 46 or the holding profile 47 and the pane 2. The profile extensions 46 of the core profiles 3 filled with the insulating profile 12 have the very positive effect for a fire-retardant component that, on the one hand, in the event of a fire on the opposite side,

lying side - a heat passage into the fire

and on the other hand - in the case of a

Fire on the same side - create thermal insulation towards the opposite side.

In Fig. 8 it is indicated that glass retaining strips 21 with corresponding bridge strips 23 made of steel can also be provided, whereby the glass retaining and bridge strips 21, 23 are preferably formed in one piece, e.g. from a bent sheet of steel, and are in particular only attached to one side of the frame profile, preferably in the area of the extension 46 of the core profile 3. In this case, the retaining profiles 47 also have the function of the cover profiles 22 described above.

In Fig. 7 - roughly corresponding to Fig. 3 - a door frame profile 5 and a door leaf profile 15 pivotally connected to it via the door hinge 25 are shown, whereby here the gap 16 formed between them runs essentially straight and perpendicular to the pane plane X-X. Here too, the already described sealing inserts 17 made of material that foams when exposed to heat are arranged in the gap area. Due to the filling of the core profiles 3, in this design the door hinge 25 is fastened via steel fittings 26a, which are arranged in the hollow chambers 7 of the shell profiles 6, instead of via the U-shaped fittings 26 in the core. According to Fig. 7a, here too - also analogous to Fig. 3 - the already described steel pin 28 can be arranged in the gap area; This is however attached to a bridge strip 49 which is held parallel to the transverse wall 45 of the core profile 3 on the door leaf profile 15 and engages - when the door is closed - in a recess 2 9 of a

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opposite core profile cross wall 45 of the door frame profile 5. The gap 16 is covered on both sides by the stop strips 24 already described, each of which is provided with an elastic profile seal 51, which comes into contact with the adjacent frame or leaf profile 5 or 15 with a sealing lip.

In Fig. 8, a door frame profile 5 and a door leaf profile 15 are shown in the area of the lock side, whereby the door frame profile 5 is connected via connecting profiles 52 to a frame profile 1 carrying a fixed glazing. In the gap between the frame profile 1 and the door frame profile 5, a sealing insert 17 is preferably arranged - as already described above. In this design, it is now essential that an actuating device 53 (lock) of the door latch 18 arranged on the door leaf profile 15 is arranged in a recess of the insulating profile 15 arranged within the core profile 3. The associated latch lock 19 (strike plate opening) for the door latch 18 is then attached to the core profile 3 of the opposite door frame profile 5.

In Fig. 9, the area of a central panel of a double-leaf door with two adjacent door leaf profiles is shown. One door leaf profile 15 with the door latch 18 and its actuating device 53 corresponds to the design according to Fig. 8. The other door leaf profile 15 contains a bolt 54 in the area of the core profile 3, which runs in the direction of the profile and serves to secure one leaf of the double-leaf door. A guide tube (mounting tube) 55 runs through the insulating profile 12 arranged within the core profile 3 to accommodate

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of the bolt 54. The guide tube 55 is preferably additionally fastened to the inside of a longitudinal wall of the core profile 3, advantageously via a guide web which is held in guide grooves of the core profile 3. The bolt 54 has at least one cross pin (not shown) which can be reached from the outside for longitudinal displacement of the bolt 54.

Thus, the actuating device 53 of the door latch 18 and/or the bolt 54 are each advantageously arranged in the thermal insulation zone, i.e. within the insulating profiles 12, whereby they are only fastened on one side, i.e. to only one core half, in order to avoid heat transfer between the core halves thermally separated by the web profiles 9.

Fig. 10 also shows that fixed glazing can also be arranged on a door frame profile 5. For this purpose, support profiles 56 are advantageously provided, each of which is inserted into a receptacle of the frame profile 5 with a profile plug-in section 57 on the one hand, and which each have a glass holding section 58 on the other. These support profiles 56 are particularly suitable as a transition to fixed side parts and to so-called skylight parts.

In all embodiments shown in Figures 1 to 10, it can be advantageous if the fire protection glazing consists of at least a two-layer pane 2, which has at least one intermediate layer (not visible in the drawings), in particular made of water glass, which expands under the influence of heat at the edge of the pane and thereby seals the gap to the respective frame profile 1, 5 or 15.

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Alternatively or in addition to this, it can also be advantageous if - as shown by way of example in Fig. 10 - a sealing strip 59 made of a material that swells or foams when exposed to heat is arranged in the gap area between the frame profile and the fire-resistant glazing. These sealing strips 59 essentially correspond functionally to the sealing inserts 17. These measures also generate additional mechanical holding forces to hold the fire-resistant glazing in place in the event of a fire.

The invention is not limited to the embodiments shown and described, but also includes all embodiments that have the same effect within the meaning of the invention, in particular embodiments in which there is a combination of the thermal separation of the supporting profile in the core 3 with the features of the thermal separation shown in Figs. 1 to 5 in the transverse walls 8 of the shell profile 6.

Claims (1)

M 2916-1 G/VIII Trübe & Kings KG, D-56767 Uersfeld/Bahnhof Expectations 1. Fire-retardant component for the manufacture of fire protection elements, such as doors, windows and the like, with an aluminium core profile (3) provided with a thermal break, which in particular carries fire-resistant glazing, and with at least one shell profile (6) made of aluminium arranged on both sides of the core profile (3), which forms a closed chamber (7) with the core profile (3),
characterized in that the core profile (3) and the shell profiles (6) arranged on both sides of the core profile (3) form a supporting profile, this supporting profile being thermally separated by web profiles (9) made of mechanically strong material with low thermal conductivity and integrated into the transverse walls (45) of the core profile (3). 2. Fire-retardant component according to claim 1,
characterized in that the supporting profile is thermally separated in transverse walls (8) of the shell profile (6). 3. Fire-retardant component according to claim 1 or 2,
characterized in that the Chambers (7) are filled with a heat-resistant insulating and supporting profile (12) which is connected to the core profile (3) in a form-fitting or form- and force-fitting manner. 4. Fire-retardant component according to one of claims 1 to 3, characterized in that the core profile (3) is filled with a heat-resistant insulating profile (12). 5. Fire-retardant component according to one of claims 1 to 4, characterized in that in the transverse walls (8) of the shell profiles (6) and/or in the transverse walls (45) of the core profile (3) there are formed U-shaped clamping profiles (10) lying opposite one another for receiving the web profiles (9) for thermal separation, between the U-legs (11) of which the web profiles (9) are held in a clamped manner. 6. Fire-retardant component according to one of claims 1 to 5, characterized in that in the chambers (7) formed by the shell profiles (6) and/or within the core profile (3) behind the U-shaped clamping profiles (10), back-formings (13) are formed in such a way that the supporting and insulating profiles (12) are positively connected to the supporting profile consisting of the core profile (3) and shell profiles (6). . Fire-retardant component according to one of claims 1 to 6, characterized in that on the transverse side of the frame profile {1) facing the window pane (2), glass retaining strips {21) are fastened by means of steel screws in the area in front of the web profiles (9) on both sides of the window plane, and a bridge strip {23) made of steel is fastened by means of a steel screw to the transverse side of the core profile (3) facing the window pane (2). 8. Fire-retardant component according to one of claims 1 to 7, characterized in that in the extension of the wider front side of the frame profile, which is designed as a door frame profile {5) or as a door leaf profile {15), a stop strip (24) is formed, which simultaneously serves to cover the gap between the door frame profile (5) and the door leaf profile (15). 9. Fire-retardant component according to one of claims 1 to 8, characterized in that the frame profile (1) is designed as a door frame profile (5) and as a door leaf profile (15) of a door and between the door frame profile (5) and the door leaf profile {15) a gap (16) is formed which runs perpendicularly or obliquely to the window plane (X-X), in which the mutually facing transverse walls (8) of the shell profiles (6) run parallel to one another and at a right angle or obliquely to the window plane (X-X) and the transverse walls of the core profile (3) run perpendicularly to the window plane (X-X). 10. Fire-retardant component according to one of claims 1 to 11, characterized in that in the area of the gap (16) between the door frame profile (5) and the turf lüge 1 profile (15) sealing inserts (17) are attached parallel to the transverse walls, which consist of a material that swells under the influence of heat. 11. Fire-retardant component according to one of claims 1 to 10, characterized in that a U-shaped steel fitting part (26) for fastening an outer door hinge (25) is provided in a cavity formed by the core profile (3) of the door frame profile (5) or the door leaf profile (15). 12. Fire-retardant component according to claim 11,
characterized in that at least one steel pin (28) is formed on the steel fitting part (26) of the door leaf profile (15) in such a way that it projects through the transverse side of the core profile (3) facing the door frame profile (5) into a recess (29) in the opposite transverse side of the door frame profile (5). 13. Fire-retardant component according to one of claims 1 to 10, characterized in that a steel fitting part (26a) for fastening an outer door hinge (25) is arranged in each of the hollow shell profiles (6) of the door frame profile (5) and the door leaf profile (15) forming the chambers (7). 14. Fire-retardant component according to one of claims 1 to 13, characterized in that at least one steel pin (28) is fastened to the door leaf profile (15), in particular to a bridge strip (49) held on the door leaf profile (15) parallel to the transverse wall (45) of the core profile (3), in such a way that it projects into a recess (29) of the door frame profile (5), in particular to a bridge strip (50) held on the opposite core profile transverse wall (45) of the door frame profile (5). 15. Fire-retardant component according to one of claims 1 to 14, characterized in that in the area of the door foot of the door leaf profile (15) in the angle area between the longitudinal and transverse sides of the door leaf profile (15) an L-shaped smoke gas protection profile (31) is attached, the leg (32) of which runs parallel to the transverse wall (8) is connected to the core profile (3) via a web profile (33) for thermal decoupling. 16. Fire-retardant component according to one of claims 1 to 15, characterized in that in the area of the door center panel (35) of a two-leaf door a non-load-bearing center profile (36) is inserted and is attached to one of the door leaf profiles (15), the center profile (36) being formed as a three-chamber profile and outer shell profiles (37) being present on both sides of a hollow core profile, in each of which a supporting and insulating profile (12) is arranged in a form-fitting manner, and in whose Separation slots (3 9) for thermal separation are provided in the cross walls. 17. Fire-retardant component according to one of claims 1 to 16, characterized in that a door latch (18) with associated actuating device (53) is arranged in the area of the core profile (3) of a door leaf profile (15) of a single or double leaf door and an associated latch lock (19) is arranged on the core profile (3) of an opposite frame profile (1) or door frame profile (5), wherein in the case of an insulating profile (12) arranged within the core profile (3), this has a recess for the door latch (18) or its actuating device (53). 18. Fire-retardant component according to one of claims 1 to 17, characterized in that in the area of the core profile (3) of one of the door leaf profiles (15) of a double-leaf door, a bolt (54) running in the direction of the profile is arranged, wherein in the case of an insulating profile (12) arranged within the core profile (3), a guide tube (55) running through the bolt (54) receives the bolt (54) and is preferably held inside the core profile (3). 19. Fire-retardant component according to one of claims 1 to 18, characterized in that the fire protection glazing consists of an at least two-layer pane (2) which has at least one Has an intermediate layer, in particular made of water glass, which swells at the edge of the pane when exposed to heat and thereby seals the gap to the frame profile (1, 5, 15). 20. Fire-retardant component according to one of claims 1 to 19, characterized in that a sealing strip (59) made of a material which swells or foams under the influence of heat is arranged in the gap area between the frame profile (1, 5, 15) and the fire-resistant glazing.