EP1650397B1 - Fireproof closure - Google Patents

Abstract

The closure has a plate-shaped closure unit (2) that is composed of a part of a fire protection glass. A frame (6) surrounds the closure unit and is non-positively connected with a building part (7). A stabilization section is arranged within the frame in a resting state and mechanically sets in under impact of heat within a cross section bordered by the frame. The stabilization unit supports an edge region of the closure unit.

Description

The invention relates to a fire protection and / or Rauchschutzabschluss for closing a cross section of a building, consisting of a plate-shaped closure element, which consists at least partially of glass, preferably a fire protection glass, a closing element enclosing the frame, which is frictionally connected to a building part, and Stabilizing agents which are arranged in a resting state within the frame and enter under heat automatically into the bounded by the frame cross-section, wherein the stabilizing agents are arranged at rest in a region adjacent to the gap region between the frame and the closing element and that the stabilizing agent under heat in enter the bounded by the frame cross-section and support edge portions of the view sides of the closure element.

Such a fire protection is, for example, from the DE 196 35 409 A1 known. In this known fire protection the frame is designed as a substantially normal steel frame. The closing element consists of a pane of fire-resistant glass, which is encircled by a cross-sectionally U-shaped metal profile. At this metal profile, the hinges for mounting the door leaf and also the handle set and a possible door closer are attached. The circumferential, sturdy metallic U-profile has the task of preventing uncontrolled or excessive discarding of the door in case of fire. Only through the interaction of the enclosing profile of the end element and the equally solid executed steel frame, the fire protection is to fulfill its protective function even in case of fire, which is precisely defined in the provisions of EN 1363-1 and EN 1634 Part 1.

From the EP 1 209 314 A2 is also known a fire protection, with a fire screen is held by circumferential glass strips. On the front sides of the fire protection a foaming in case of fire material is arranged in the form of fire protection strip. The door frame and the frame are equipped with a Mehrfachfalz, wherein the partially parallel end faces of the door frame and frame are each equipped with fire protection strips, so that the foaming materials are supported against each other in case of fire.

It is disadvantageous to look at the aforementioned fire protection statements but also in all other similarly constructed known Feuerschutzabschlüssen that the final element due to the circumferential metallic frame in particular architectural and aesthetic requirements often can not meet. On the one hand, the thickness of the frame elements is usually several times greater than the thickness of the fire-resistant glazing. On the other hand, a metallic, ie opaque, frame in a glass door at all perceived as disturbing, since often the character of a "glass door" is desired.

As another example of the arrangement of intumescent material is still the FR 90 05080 A1 called, which discloses a fire door without glass portion, which has recesses on the front sides of the door leaf, in which there is a foaming in case of fire material, the foaming material is in turn covered with a steel band. In the event of fire, the foamed material passes, firstly, into the gap between the door leaf and the door frame and, secondly, into a recess in the floor area of the door. Similarly, a recess can be provided in the frame of the door with foaming material that passes in case of fire in a corresponding recess formed on the front side of the door leaf.

Finally, leave the US 2003/0024184 A1 a door frame, in which an intumescent material is arranged circumferentially so that the material passes in case of fire between the front side of a door leaf in the closed position and the door frame. The document thus reveals all features of the preamble of claim 1.

The invention is based on the object to provide a fire protection, in which the final element to the highest possible proportion, preferably even completely made of fire protection glass, without the risk of uncontrolled distortion of the closure element in case of fire, thereby jeopardizing compliance with fire protection standards could be.

Based on a fire protection and / or smoke protection of the type described above, the object is achieved in that the stabilizing agent of at least one filled with an insulating layer, slidably mounted hollow profile are formed.

The invention is thus based on the idea of laying the framework-like reinforcements in the frame, ie a stationary component, present in the edge region of the closure element in the case of conventional fire protection finishes and thus movable. In the resting state of the stabilizing agent, these are not within the cross section of the terminating element and therefore do not affect its appearance in any way. At a It is therefore possible to make the end element completely made of fire-resistant glass, wherein, of course, the handle set or bands for the storage of the end element or a door closer and a lower smoke protection seal continue to be made of metal.

According to the invention, the stabilizers only then come into action and are only visible when the fire actually occurs. Only in this case stabilizing means are needed in the edge region of the end element, since in the normal operating state, the strength of a glass entire closure element is quite given, such as glass doors in normal design, i. without fire protection function, have proven for some time. In a fire protection according to the invention thus the stabilizing means are arranged outside the visible cross section of the closing element, if they have to fulfill any function, whereas in the known fire protection statements stabilizing means, for example in the form of rotating frame elements are always firmly connected to the closing element and therefore its optics in not affect negligibly. The frame as a location for the stabilizer in the non-active state is a particularly advantageous place, as there is usually sufficient space available to accommodate the stabilizing agent including its self-acting drive, without the optical properties of the frame are adversely affected , The frame often even has the possibility of sinking it, i. For example, completely plastered, install, so that when using a glass cover element no metal parts are more visible to the viewer when the final element extends for example between opposite walls and between the ceiling and floor of a hallway and the frame flush in walls, ceiling and floor or Plaster or floor covering is embedded.

Despite these very advantageous optical properties of the fire protection according to the invention this will also meet its required by the relevant regulations properties. In case of fire, namely, the stabilizing agents are within the limited by the frame cross-section that they can support edge portions of the view sides of the closing element and thereby prevent excessive distortion of the same and the resulting flame passage safely.

The stabilization function is particularly good when the closure element is bilateral, i. from its two sides of Stabilisierungsmitteln supportable. Also, the stabilizing means should extend in an elongated manner parallel to the end faces of the closing element, in order to enable the widest possible and not only selective support in case of fire. The placement of the intumescent, i. the drive material of the stabilizing agent, in a hollow profile further allows a very good dosage and a protected, because completed, housing the intumescent.

According to a particularly advantageous embodiment of the invention, it is provided that the stabilizing agents contain an activatable heat-activatable intumescent, in particular sodium silicate. These substances, which have long been proven in the prior art and foam in the event of fire, can have such a strength in the foamed state which is encrusted under the action of heat that they alone can fulfill the function of the stabilizing agents.

The invention further ausgestaltend is provided that the stabilizing agent have at least one stabilizing profile, in particular a steel profile. In this way, a very high strength of the stabilizing agent is achieved, so that even very large internal deformation forces of the closing element, especially in very uneven exposure to heat, can be supported.

According to a particularly preferred. Embodiment, the stabilizing agents are formed by a filled with an intumescent hollow profile having an opening facing away from the direction of movement of the stabilizing agent. When swelling the intumescent in case of fire, the foam formed, which occupies a much larger volume compared to the intumescent, exiting through the opening and supported on a suitable support surface of the frame, whereby the hollow profile is advanced in the cross section of the closing element. The "drive" of the stabilizer thus takes place according to the "Rückstossprinzip". Through the opening in The hollow profile can be very easily introduced into the hollow profile by the way the Dämmschichtbildner.

According to the invention it is further proposed that the stabilization profile is slidably mounted in a guide profile, wherein the guide profile and / or the stabilization profile have stop means which define a stabilization position in which the stabilization profile has emerged maximally from the frame.

In this way, an uncontrolled wide retraction of the stabilization profiles is prevented and also ensured in the stabilization position that the stabilization profiles are still held in the guide profiles, and in particular laterally to the direction of movement of the stabilizing profiles acting, can exert forces exerted by the closing element. The stabilization profiles and the guide profiles thus act together according to the telescopic principle, which allows the absorption of transverse forces, in particular even in the extended state.

According to a preferred embodiment, the stabilization profile is U-shaped in cross-section with feet projecting outwards at the ends of its legs and the guide profile is formed inverted in a U-shaped cross-section with hooks projecting inwards at the ends of its legs. By simple forming processing, such as bending or extrusion, can be produced in this way effective stop means for limiting the exit movement of the stabilization profiles.

To reduce the production costs, it is proposed that two guide profiles are combined to form a base profile and that a stiffening profile is arranged between the guide profiles. The latter has the task of ensuring the rigidity of the frame construction, in particular to absorb the forces that are caused by the bands movable, for example, tiltable, pivotal or hinged mounted end elements to absorb.

It is also possible that the base profile, consisting of a lower part, which has the opposite legs of the two guide profiles, and a non-positively connected, in particular welded, upper part, which has the mutually facing legs of the two guide profiles.

It is also provided according to the invention that the frame has a cover, which covers the stabilization profiles and / or the guide profiles and with predetermined breaking points is provided, which limit an opening area, which can be lifted by the swelling Dämmschichtbildner. In the non-activated state of the stabilization profiles of the frame in such an embodiment, the inherent stabilization function for the edge regions of the end element is not to be considered. The places where the stabilization profiles emerge in case of fire, can be made completely invisible, so that such a frame can also meet very high aesthetic requirements. Only in case of fire, the cover profile of such a frame breaks exactly at the points from which emerge the stabilization profiles. Of course, the material thickness in the area of the predetermined breaking points and the quantity and type of intumescent agent must be coordinated in such a way that a secure emergence of the stabilization profiles is ensured.

If the cover profile is connected to a holding profile, preferably via latching noses, and the stiffening profile is arranged between the holding profile and the cover profile, this results in a very space-saving positioning of the stiffening profile between the mutually parallel stabilization profiles together with the associated guide profiles.

In order to prevent a flame passage in the region of the end faces of the closure element, the cover profile can be provided in its central region with an undercut receiving groove for receiving a fire protection strip, consisting of an activatable under heat insulating layer. In this case, the sealing function does not have to be taken over by the stabilizing agents, in particular not by a metallic stabilizing profile.

In order to be able to meet the requirements of a Rauchschutzabschluss with the fire protection according to the invention, it is proposed that the cover is provided on both sides next to the receiving groove for the fire protection strip with a parallel extending retaining groove for receiving a respective holding portion of an elastic sealing profile that spans the fire protection strip In a preferably curved central region of this elastic sealing profile, the end face of the closing element comes to rest. As a result, the required tightness between the end element and frame can be achieved, which must be given to meet the relevant smoke protection standards.

In order to minimize the sealing work in the area between the frame and the adjoining building part, it is proposed that the frame, in particular the base profile, to the part of the building facing side is provided with a receiving groove for receiving a fire protection strip. In the event of fire, the foaming that occurs then leads to an automatic sealing of the gap area between the frame and the building part, even if this gap area has an irregular shape and size.

Finally, it is also envisaged that the closing element essentially consists entirely of fire protection glass or is an all-glass door leaf. However, the definition of the terms "complete" or "all-glass" should not preclude the circumstance on the one hand that functional parts such as press towers, bands or door closers consist of metallic materials or if the front surfaces of the fire protection glass are sealed, for example by means of film strips or thin metal strips are to protect against environmental influences sensitive sodium silicate, which is in the usual fire-resistant glazing between the individual glass layers, from contact with air and water.

Fig. 1

eine Ansicht eines erfindungsgemäßen Feuerschutzabschlusses,

Fig. 2

einen Querschnitt durch eine Zarge des Feuerschutzabschlusses gemäß Fig. 1 im nicht aktivierten Zustand der Stabilisierungsmittel

Fig. 3

wie Fig. 2, jedoch im einseitig aktivierten Zustand der Stabilisierungsmittel und

Fig. 4

wie Fig. 2, jedoch im beidseitig aktivierten Zustand der Stabilisierungsmittel

The invention will be explained below with reference to an embodiment which is shown in more detail in the drawing. It shows:

Fig. 1

a view of a fire protection closure according to the invention,

Fig. 2

a cross section through a frame of the fire protection closure according to Fig. 1 in the non-activated state of the stabilizing agent

Fig. 3

as Fig. 2 , but in the unilaterally activated state of the stabilizing agent and

Fig. 4

as Fig. 2 but in the bilaterally activated state of the stabilizers

Fig. 1 shows a view of a fire protection cover 1 in the form of a glass door, consisting of a closing element 2 in the form of a door leaf, which consists of a holding set 4 in addition to a handle set 3, bearing pin 4a and a door closer 5 completely made of a fire-resistant glass of known type, and a frame. 6 , which is non-positively, in particular by means of screws, connected to a building part 7 in the form of a wall. The frame 6 is essentially completely covered by a plaster layer P applied to the building part 7 after installation of the frame and runs along both vertical end faces of the door leaf and at least along the horizontal upper side Front side, if necessary, the horizontal lower, ie would then be embedded in the floor.

Out Fig.2 can be seen that the frame has a base profile 8, which consists of steel and is designed in two layers in its central region 9, because there are an upper part 10 and a lower part 11 of the base profile 8, for example, connected by welding. Alternatively, however, is also a one-piece design of the base profile 8 into consideration. Upper part 10 and lower part 11 of the base profile 8 together form two guide profiles 12, which are arranged on both sides of the central region 9. The guide profiles 12 have in cross section the shape of a U and have at the ends of their legs 13 each inwardly projecting feet 14, which take over the function of stop means.

In each guide section 12, a stabilizing profile 15 is arranged, which also consists of steel and is U-shaped in cross section, wherein the two U-sections of the guide profiles 12 and the stabilizing profiles 15 are arranged rotated by 180 ° to each other. At the ends of the legs 16 of the stabilizing profiles 15 outwardly projecting hooks 17 are arranged. The hooks 17 prevent the stabilization profiles 15 from escaping from the guide profiles 12 and cause a limitation of a relative movement of guide profiles 12 and stabilization profiles 15 to each other.

The stabilization profiles 15 are substantially completely filled in their interior with an intumescent agent 18, in particular a sodium silicate, which swells up under the influence of heat.

In the lower part 11 of the base profile 8 is a receiving groove 19, in which a fire protection strip 20 is inserted. The fire protection strip 20 also consists of a heat-swelling intumescent, such as sodium silicate.

The base profile 8 is covered by a cover profile 21, which has a flat U-shape in cross section. The cover 21 is connected in its central region 22 via recesses 23 with locking lugs 24 of a retaining profile 25 which extends in the central region of the base profile 8 between the two guide profiles 12. The retaining profile 25 also has a U-shape and takes in its interior - limited by the central region 22 of the cover 21 - a stiffening profile 26. The stiffening profile 26 is substantially U-shaped in cross-section and has in its two edge regions 27 each have a plurality of folded over sheet metal layers, whereby the moment of resistance clearly can be increased. The existing steel reinforcing profile 26 is from the DE 196 51 699 C1 known, so that can be dispensed with further explanations at this point.

In the region of the transitions between the vertical and the horizontal sections of the frame 6 are rectangular corner connectors 28, which provide in these areas for the necessary rigidity and angularity of the frame construction.

The cover profile 21 has in its two edge regions 29 each opening portions 30 which are connected via predetermined breaking points 31 with the remaining portions of the cover 21. The predetermined breaking points 31 are defined by notches 32, which are introduced from the back of the cover in the surface and therefore are not visible from the outside.

In the middle region 22, the cover profile further comprises a flat receiving groove 33 into which a fire protection strip 34 is inserted. In case of fire, the heat-swelling material of this fire protection strip 34 leads to a seal between the frame 6 and the end face 35 of the end element 2 or its delimiting edge regions of the viewing sides.

On both sides of the receiving groove 33 is in each case a retaining groove 36, in each of which a holding portion 37 of an elastic material, in particular of silicone elastomer, existing seal 38 is inserted. The seal 38 spans the fire protection strip 34 and ensures even in the "cold state" for a seal between the end face 35 of the end element 2 and the frame 6, so that the fire protection 1 complies with the relevant smoke protection standards. In case of fire, the seal 38 is destroyed at temperatures above 200 ° C, so that the fire protection strip 34 consequently enters the sphere of influence of high temperatures, and then - as already indicated above - takes over a sealing of the gap area against a flame passage. The fire protection strip 34 may be covered for reasons of appearance with a thin metal profile having the color of the cover 21. In this way it is prevented that can be looked through the crystal clear material of the seal 38 on the color possibly deviating fire protection strip.

Fig. 3 shows the fire protection closure 1 in a state in which the left stabilization profile 15 has emerged from the frame 6 after exposure to heat by foaming the intumescent agent 18. The swelling intumescent acts like a kind hydraulic drive medium for the "Kobu" in the form of stabilization profile 15, since the located behind this "cylinder space" is completed and the pressure generated during swelling can be reduced only by displacement of the stabilizing profiles 15 to the outside. The cover profile 21 is broken in the region of the left opening area at the predetermined breaking points 31. The on the "hot side" stabilization profiles 15 are located in FIG. 3 in their stabilization position, in which the hooks 17 rest on the feet 14 of the legs 13 of the guide profiles 12, so that a further exit movement of the stabilization profiles 15 is prevented. In the stabilization position, the stabilization profile 15 is located within the cross section of the end element 2 and can therefore support its edge regions 39 and therefore prevent excessive distortion. The tightness against a flame passage through the gap between the end face 35 of the end element 2 and the frame 6 is taken over by the intumescent of the activated in this state fire protection strip 34. The insulating layer is also located in the space between the edge regions 39 of the end element 2 and the leg 16 of the stabilization profile 15, so that the support function of the stabilization profile 15 is an indirect. By the extension of the gap between the end element 2 and the frame 6, in particular of the stabilization profile 15, and by the 90 ° -Abwinklung this gap, the sealing effect of the intumescent of the fire protection strip 34 is significantly improved.

Fig. 4 Finally, it shows how the stabilization profiles 15 are located on both sides of the fire protection closure 1 in the activated position and thereby, if necessary, can support the closing element 2 in both directions. Depending on the type of heat exposure of the fire protection 1, the respective (temporal) swelling behavior of the intumescent of the fire protection strip 34 and the stabilization profiles 15 and the concrete deformation of the end element 2, it is possible that in places both stabilization profiles 15 are activated, whereas at other points of the frame. 6 only the stabilizing profile 15 is activated on one side of the end element 3. In any case, it could be demonstrated by means of the corresponding fire tests that, in conjunction with the seal caused by the fire protection strip 34, the relevant standards could always be reliably adhered to.

In the Figures 2 . 3 and 4 not shown are the fasteners for the frame 6, with which it is attached to the building part 7. These are screws which are guided through corresponding holes in the base profile 8, the retaining profile 25 and the stiffening profile 26 and extend in dowels in the building completion

LIST OF REFERENCE NUMBERS

1

Fire Final conclusion

2

termination element

3

handle set

4

Retaining plate

4a

pivot

5

door closers

6

frame

7

building

8th

basic profile

9

the central region

10

top

11

Unterteill

12

guide profile

13

leg

14

foot

15

stabilizing profile

16

leg

17

hook

18

intumescent

19

receiving groove

20

Fire protection bar

21

Cover

22

the central region

23

return

24

locking lug

25

retaining profile

26

stiffening profile

27

border area

28

Corner connector

29

border area

30

opening area

31

Breaking point

32

notch

33

receiving groove

34

Fire protection bar

35

front

36

retaining groove

37

holding section

38

poetry

39

border area

P

Rendering

Claims (16)

1. A fireproof closure (1) and/or smokeproof closure for sealing a cross section of a building, consisting of

   - a plate-shaped closure element (2) which consists at least partially of a glass, in particular fireproof glass,

   - a case (6) which surrounds the closure element (2) and can be connected in a force-fitting manner to a building part (7), and

   - stabilising means, which are arranged in a rest state within the case (6) and under the effect of heat enter automatically into the cross section which is delimited by the case (6), with the stabilising means being arranged in the rest state in a region adjacent to the gap region between the case (6) and the closure element (2) and that the stabilising means under the effect of heat enter into the cross section which is delimited by the case (6) and support edge regions (39) of the view sides of the closure element (2),

   characterised in that the stabilising means are formed by at least one hollow stabilising profile (15), which is mounted in a displaceable manner and is filled with an intumescent (18).
2. The fireproof closure according to Claim 1, characterised in that the closure element (2) can be supported on both sides by stabilising means.
3. The fireproof closure according to Claim 1 or 2, characterised in that the stabilising means contain an intumescent (18), in particular sodium silicate, which can be activated under the effect of heat.
4. The fireproof closure according to one of Claims 1 to 3, characterised in that the stabilising profile (15) is a steel profile.
5. The fireproof closure according to Claim 3 or 4, characterised in that the hollow profile which is filled with an intumescent (18) has an opening which faces away from the direction of movement of the stabilising means.
6. The fireproof closure according to Claim 4 or 5, characterised in that the stabilising profile (15) is mounted in a displaceable manner in a guide profile (12), with the guide profile (12) and/or the stabilising profile (15) having stop means which define a stabilising position in which the stabilising profile (15) has come out of the case (6) to a maximum extent.
7. The fireproof closure according to Claim 6, characterised in that the stabilising profile (15) is configured with a U-shaped cross section with feet (17) which project at the ends of its limbs (16) and the guide profile (12) is configured with a reversed U-shaped cross section with hooks (14) which project inwardly at the ends of its limbs (13).
8. The fireproof closure according to Claim 6 or 7, characterised in that two guide profiles (12) are combined to form a base profile (8) and that a reinforcing profile (26) is arranged between the guide profiles (12).
9. The fireproof closure according to Claim 8, characterised in that the base profile (8) consists of a lower part (11) which has the limbs (13), which face away from one another, of the two guide profiles (12) and an upper part (10) which is connected thereto in a force-fitting manner, is in particular welded, and has the limbs (13), which face one another, of the two guide profiles (12).
10. The fireproof closure according to one of Claims 6 to 9, characterised in that the case (6) has a covering profile (21) which covers the stabilising profiles (15) and/or the guide profiles (12) and which is provided with predetermined breaking points (31) which delimit an opening region (30) which can be lifted by the swelling intumescent.
11. The fireproof closure according to Claim 10, characterised in that the covering profile (21) is connected to a retaining profile (25), preferably by means of latching lugs (24) and recesses (23) and that the reinforcing profile (26) is arranged between the retaining profile (25) and the covering profile (21).
12. The fireproof closure according to Claim 10 or 11, characterised in that the covering profile (21) is provided in its central region (22) with an undercut receiving groove (33) for receiving a fire-protective strip (34) consisting of an intumescent which can be activated under the effect of heat.
13. The fireproof closure according to Claim 10, 11 or 12, characterised in that the covering profile (21) is provided on both sides adjacent to the receiving groove (33) with a retaining groove (36) which runs parallel thereto for receiving in each case a retaining section (37) of an elastic sealing profile (38) which spans the fire-protection strip (34).
14. The fireproof closure according to one of Claims 1 to 13, characterised in that the case (6), in particular the base profile (8), is provided on the side which faces the building part (7) with a receiving groove (19) for receiving a fire-protective strip (20).
15. The fireproof closure according to one of Claims 1 to 14, characterised in that the closure element (2) consists essentially completely of fireproof glass.
16. The fireproof closure according to one of Claims 1 to 15, characterised in that the closure element (2) is a whole glass door.

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