EP1643050A2 - Fire resistant false ceiling for escape ways in buildings - Google Patents

Abstract

Internally-reinforced lightweight concrete is used in a fireproof ceiling for escape routes in buildings, comprising several segments (1) made of lightweight concrete covering the width of the escape route and mounted on the horizontal sides of metal L-profiles (2) fixed to the walls.

Description

The invention relates to a fire blanket for escape routes in buildings according to the preamble of claim 1 protection.

A fire blanket of the type mentioned above, which serves to delineate an escape route from an area for cable and pipe guide and the like in a building is known from DE 92 05 288 U1.

Another fire blanket is known from DE 84 37 592 U1. This comprises several, juxtaposed, the width of the escape route spanning ceiling segments that rest on horizontally extending legs of attached to walls of the escape route, metallic L-profiles. In this fire blanket, the ceiling segments are formed from a combination of metal and plasterboard, the metallic surfaces are arranged on the visible side and the plasterboard facing away from view. This fire-resistant ceiling complies with the standard of fire protection class F30 of DIN 4102, Part 1.

advantageous in this ceiling is the simple structure and easy installation on site. First, simple L-profiles are screwed in the escape route to the wall. Subsequently, the ceiling segments are placed on the protruding legs of the L-profiles.

The disadvantage, however, is that the segments due to their special structure (consisting of a metallic layer and a plasterboard) can not be cut on site, since an optically acceptable cut with a saw due to the layer structure and the combination of materials is practically impossible.

The invention is therefore the object of the segments of a fire blanket of the type mentioned while retaining their benefits to go on to further that they can be tailored easily at the installation site.

This object is achieved with a fire blanket of the type mentioned by the features listed in the characterizing part of the protection claim 1.

According to the invention, it is thus provided that the ceiling segments are made of lightly reinforced lightweight concrete, preferably cellular concrete. This requirement leads to a fairly homogeneous basic structure of each ceiling segment, in which both the proposed reinforcement and the concrete takes over carrying function and in which a cut at the installation site with a saw readily possible because the surface of the ceiling segment even after a cut on site all visually satisfies requirements. In addition, this construction offers a fire protection on both sides, since the metallic reinforcement is regularly arranged centrally in the ceiling segment. This eventually leads to this fire blanket according to the invention fulfilling the F90 standard for fire resistance.

Other advantageous developments emerge from the dependent claims.

The fire blanket according to the invention including its advantageous developments according to the dependent protective claims will be explained in more detail with reference to the drawing of an embodiment.

Figur 1

im Schnitt den oberen Teil eines Fluchtweges mit der erfindungsgemäßen Brandschutzdecke;

Figur 2

von unten vier Deckensegmente der Brandschutzdecke gemäß Figur 1;

Figur 3

perspektivisch ein an der Wand des Fluchtweges befestigtes L-Profil im Zusammenwirken mit einem zwischen Deckensegmenten angeordnetem T-Profil;

Figur 4

im Schnitt von der Seite ein zwischen zwei Deckensegmenten angeordnetes T-Profil;

Figur 5

im Schnitt ein L-Profil mit aufgelagertem Deckensegment;

Figur 6

perspektivisch eine Anordnung von L-Profilen, mit einem speziell segmentbreit ausgebildeten L-Profil zur Montage der Brandschutzdecke;

Figur 7

teilweise geschnitten das Verbindungselement gemäß Figur 6 zum Ein- und Aushängen des segmentbreiten L-Profils;

Figur 8

im Schnitt eine besonders bevorzugte Ausführungsform des Deckensegments mit speziellem Schiebe-Klapp-Mechanismus zum öffnen und Schließen der Decke (dargestellt in geschlossenem Zustand); und

Figur 9

im Schnitt ein Teil der bevorzugten Konstruktion gemäß Figur 8 in geöffnetem Zustand.

It shows ,

FIG. 1

in section, the upper part of an escape route with the fire blanket according to the invention;

FIG. 2

from below four ceiling segments of the fire blanket according to Figure 1;

FIG. 3

in perspective, an attached to the wall of the escape route L-profile in cooperation with an arranged between the ceiling segments T-profile;

FIG. 4

in section from the side of a arranged between two ceiling segments T-profile;

FIG. 5

on average, an L-profile with supported ceiling segment;

FIG. 6

in perspective, an arrangement of L-profiles, with a specially designed segment-wide L-profile for mounting the fire blanket;

FIG. 7

partially cut the connecting element according to Figure 6 for mounting and unmounting the segment-wide L-profile;

FIG. 8

in section a particularly preferred embodiment of the ceiling segment with special sliding-folding mechanism for opening and closing the ceiling (shown in the closed state); and

FIG. 9

in section, a part of the preferred construction according to FIG 8 in the open state.

The fire protection ceiling for escape routes in buildings illustrated in FIGS. 1 to 9 always comprises a plurality of ceiling segments 1 arranged side by side and spanning the width of the escape route, which rest on horizontally extending legs of L-profiles 2 fastened to walls of the escape route. The metallic L-profiles 2 are preferably made of steel, in particular of high temperature resistant steel. In addition, the L-profiles 2 a support area 4 for the ceiling segments 1, which is preferably not wider than 50 mm formed seen transversely to the L-profile. As can be seen in particular in Figures 3 and 5, the L-profiles 2 are fastened with screws on walls of the escape route. Of course, other attachment methods are also possible.

Essential for the fire blanket according to the invention is now that the ceiling segments 1 are made of lightweight concrete, preferably cellular concrete, provided with an internal reinforcement 3. Alternatively or additionally, it may additionally be provided that the lightweight concrete (or aerated concrete) is provided with additives such as Styrofoam®, glass foam, vermiculite or perlite.

According to http://www.bv-porenbeton.de ", aerated concrete belongs to the group of lightweight concretes and is a highly heat-insulating solid construction material which, due to its closed-cell pore structure, can take over static as well as structural-physical properties - as a rule without additional measures and supplementary building materials. It is made from domestic raw materials and has the almost unlimited lifetime characteristic of solid construction materials.The aerated concrete owes its properties to the raw materials used, the resource-saving production process and, above all, to the air, because up to 80% of its volume consists of this massive building material of air and only too much 20% solids For the production of 4 to 5 m ³ aerated concrete, only 1 m ³ of raw materials are required: quartz sand, cement and / or lime as binder and water In addition to the driving curtain The aerated concrete obtains its characteristic properties by steam hardening in an autoclave. Among the outstanding properties of aerated concrete is a high strength at a relatively low density. In combination with the low bulk density, aerated concrete is a solid building material with excellent thermal insulation. In addition there is a standard sound insulation. Ultimately, aerated concrete can only be characterized by the sum of its positive properties. Aerated concrete is suitable for the construction and modernization of detached and semi-detached houses, for multi-storey housing construction and the construction of commercial buildings. "

It is structurally provided that the ceiling segments 1 have a maximum width of 3 m and a thickness between 50 mm and 100 mm. The inner reinforcement 3 is formed of metal and preferably arranged in a grid or net-like evenly distributed in lightweight concrete.

According to one embodiment of the fire blanket is provided that the ceiling segments 1 at least escape route side either funiert, painted, plastered or coated with a laminate. This leads to a visually appealing design, but still allows a processing of the ceiling segments 1 on site during assembly of the fire blanket.

For optical, but also for corrosion protection reasons, it is furthermore advantageously provided that the L-profiles 2 are provided with a lacquer layer 5, which is preferably applied on the escape path side. Moreover, in order to improve the fire protection properties, it is provided, as shown in FIG. 5, that the L-profiles 2 are coated with an intumescent layer-forming agent 6 preferably applied to the escape path, preferably expanded graphite. This requirement ensures a tight seal between wall and ceiling segment in case of fire.

For the same reason, it is also advantageously provided (see FIGS. 4 and 5) that insulating layer formers 11, preferably expandable graphite, are arranged on the ceiling segments 1 L or T profile side.

In order to mount the fire blanket easy, is also advantageously provided that an approximately segment wide (preferably between 300 mm and 600 mm) L-profile 2 is arranged with at least one on a wall of the escape route by vertical displacement and detachable connection element 10. This is in a conventional manner from an opening in the angle plate, which is narrower in a first region and larger in a second region than a screw head. For mounting the ceiling segments 1, the ceiling segments 1 can therefore be lifted over the L-profiles over the area at the suspended, segment-wide L-profile and placed. The last inserted ceiling segment 1 is then fastened with the segment-wide L-profile.

In order to seal the transition between the ceiling segments 1, it is provided that 2 T-profiles 7 are arranged transversely to the L-profiles between them, wherein the horizontal part of the T-profiles 7 extends on the escape path side (that is arranged as an inverted T).

As FIG. 3 shows, a particularly preferred embodiment of the T-sections 7 consists in that its vertical part preferably has edge sections 8 which are extended on both sides and bear on the support areas 4 of the L-profiles 2. This proviso results in the escape path side a smooth-surfaced, visually appealing conclusion. Since the T-profiles 7 do not have a supporting function due to the inner reinforcement of the ceiling segments 1, it is furthermore advantageously provided that these are formed from aluminum.

In order to prevent the passage of smoke through the fire blanket in case of fire, but also to the regular operation, for example, due to air conditioning existing air pressure difference (associated with the particular visually unattractive streaking) between the foreclosed area above the fire blanket and the escape route itself meaningless As is shown in FIGS. 4 and 5, a seal 9 is optionally arranged between the L-profiles 2 and / or the T-profiles 7 and the ceiling segments 1.

A particularly preferred embodiment of the inventive fire blanket is finally shown in Figures 8 and 9.

In principle, this fire blanket consists of a ceiling segment made of lightweight concrete, which rests on mounted on the Rettungswegwänden L-profiles.

In order to easily assemble and disassemble the segments, or even to get quickly to the underlying installation space, a facing the building ceiling edge 12 is provided at the segment-side end of the L-profile 2. This is, for example, as shown, designed as a fold of the L-profile 2 itself. Furthermore, metallic profiles 13 are provided on the ceiling segments 1, which have protrusions 14 facing the L-profiles 2. These projections 14 are hook-shaped and have with their free ends at a distance from each other, which in particular allows a horizontal displaceability of the ceiling segment 1 to the L-profiles 2 arranged on both sides. In addition, the hook-shaped projections 14 are formed in the facing the building ceiling edges 12 are hooked.

With reference to FIG. 8, these provisos allow the ceiling segment 1 to be pushed to the left after lifting. The in this way the L-profile no longer engaging behind end of the hook-shaped projection 14 can now be moved together with the entire ceiling segment 1 on the L-profile 2 in a pivoting down. Since on the other side of the supernatant 14 is hook-shaped, this can be hung on the edge 12 of the L-profile, so that the position shown in Figure 9 results.

Conversely, this construction can of course also be used to advantage in the assembly of the fire blanket to first hang the ceiling segments on one side and then to pivot in their final position.

For the sake of completeness, reference is made in this connection to the construction according to DE 1 934 185 A1, in which, however, the ceiling segments are suspended at their respective longitudinal edges. According to the invention, in contrast, the ceiling segment are connected with their respective relatively short extension direction with the L-profile.

In order to optimize the entire construction fire protection technology, a horizontally extending leg 15 is also provided on the building ceiling facing end of the L-profile 2. Here, a gap between ceiling segment 1 and L-profile 2 projecting, at least fire-retardant plate member 16 (eg., A three-layer plasterboard) is arranged on the leg 15. Smoke-proofing is ensured by a smoke seal 17, preferably a compression belt, arranged between the ceiling segment 1 and the plate element 16.

Bezugezelehenliste

1

ceiling segment

2

L-profile

3

internal strength

4

support area

5

paint layer

6

intumescent

7

T profile

8th

edge section

9

poetry

10

connecting element

11

intumescent

12

edge

13

profile

14

Got over

15

leg

16

panel member

17

smoke barrier

Claims (10)

Fire blanket for escape routes in buildings, comprising a plurality of juxtaposed, the width of the escape route spanning, made of lightweight concrete ceiling segments (1) resting on horizontally extending legs of walls of the escape route attached, metallic L-profiles (2),
characterized,
that the lightweight concrete is provided with an inner reinforcement (3). Fire blanket according to claim 1,
characterized,
that the lightweight concrete is optionally formed of cellular concrete and / or provided with additives such as Styrofoam®, glass foam, vermiculite or perlite. Fire blanket according to claim 1 or 2,
characterized,
in that the L-profiles (2) are made of steel, preferably a high-temperature-resistant steel, wherein preferably the L-profiles (2) have a contact area (4) for the ceiling segments (1), which is preferably not seen transversely to the L-profile more than 50 mm wide, wherein preferably the L-profiles (2) are provided with a lacquer layer (5), wherein preferably the lacquer layer (5) is applied on the escape path side, wherein preferably the L-profiles (2) with a Dämmschichtbildner (6 ), preferably expandable graphite, are coated, wherein preferably the Dämmschichtbildner (6) is applied to the escape path side, wherein preferably the L-profiles (2) are fastened with screws on walls of the escape route. Fire protection blanket according to one of claims 1 to 3,
characterized,
that a wide segment approximately L-profile (2) a is provided on a wall of the escape route by vertical displacement on and lift-off connecting element (10) having at least. Fire protection blanket according to one of claims 1 to 4,
characterized,
that T-profiles (7) are arranged transversely to the L-profiles (2) between the ceiling segments (1), the horizontal part of the T-profiles (7) extending on the escape path side, preferably the vertical part of the T-profiles (7 ) preferably on both sides extended, on the support areas (4) of the L-profiles (2) resting edge portions (8), wherein preferably the T-profiles (7) are formed of aluminum. Fire blanket according to claim 1 or 5,
characterized in that optionally between the L-profiles (2) and / or the T-profiles (7) and the ceiling segments (1) a seal (9) is arranged, wherein preferably the ceiling segments (1) has a maximum width of 3 m , wherein preferably the ceiling segments (1) have a thickness between 50 mm and 100 mm. Fire protection blanket according to one of claims 1 to 6,
characterized,
in that the inner reinforcement (3) is formed from metal, wherein preferably the inner reinforcement (3) is arranged evenly distributed in the lightweight concrete. Fire protection blanket according to one of claims 1 to 7,
characterized,
are that the ceiling segments (1) at least fluchtweg side veneered optionally painted, plastered or coated with a laminate, preferably on the ceilings segments (1) L- or T-profile side insulating layer (11), preferably. Expanded graphite, are arranged, wherein preferably at the segment-side end of the L-profile (2) facing the building ceiling edge (12) is provided. Fire protection blanket according to one of claims 1 to 8,
characterized,
in that metallic profiles (13) are provided on the ceiling segments (1), which have projections (14) pointing to the L-profiles (2), preferably the projections (14) being hook-shaped, preferably the hook-shaped ends of the projections ( 14) have a distance from each other, which in particular allows a horizontal displaceability of the ceiling segment (1) to the L-profiles (2) arranged on both sides, wherein preferably the hook-shaped projections (14) in the facing to the building ceiling edges (12) are designed to be hooked. Fire protection blanket according to one of claims 1 to 9,
characterized,
in that a horizontally extending leg (15) is provided on the end of the L-profile (2) facing the building ceiling, wherein preferably at the leg (15) a, at least fire-retardant plate element projecting over a gap between the ceiling segment (1) and L-profile (2) (16) is arranged, wherein preferably between the ceiling segment (1) and the plate member (16) has a smoke seal (17), preferably a compression belt is arranged.

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