Fire or smoke protection curtain

Abstract

A fire or smoke protection curtain includes a textile fire protection element, which has a first side in the form of a front side and a second side in the form of a reverse side. The textile fire protection element can be put into a compact bearing arrangement and in a protection arrangement in which it counteracts the spread of a fire and/or smoke and while extending along a closing surface. At least one guide track guides the fire protection element while it is in the protection arrangement. The at least one guide track is designed to exert a holding force (F.sub.H) that counteracts a bulging of the fire protection element. The at least one guide track is designed to exert the holding force (F.sub.H) on the fire protection element to at least 80% from only one of the sides.

Claims

1. A fire protection curtain, comprising: a textile fire protection element which comprises a fire resistant material which counteracts the spread of fire, and which has a first side in the form of a front side and a second side in the form of a reverse side, wherein the textile fire protection element is configurable to be put into both a compact bearing arrangement and a protection arrangement in which the textile fire protection element counteracts the spread of a fire, and wherein the textile fire protection element extends along a closing surface (S) when in the protection arrangement, and at least two guide tracks, of which at least one guide track guides the textile fire protection element when the textile fire protection element is in the protection arrangement, wherein the at least one guide track is configured to exert a holding force (F.sub.H) that counteracts a bulging of the textile fire protection element, and wherein at least 80% of the holding force (F.sub.H) is exerted on the textile fire protection element by a part of the guide track that is arranged on only one of the first and the second sides of the textile fire protection element, wherein the least one guide track comprises a support edge, wherein the textile fire protection element comprises rivets or buttons which abut the support edge, wherein the textile fire protection element has a bend at a position at which the textile fire protection element contacts the support edge, and wherein the textile fire protection element and the at least two guide tracks are configured such that the fire protection curtain is made to withstand a fire for at least 30 minutes according to EN 1634-3.

2. The fire protection curtain according to claim 1, wherein the holding force (F.sub.H) acts generally tangentially on the fire protection element.

3. The fire protection curtain according to claim 1 wherein the guide track comprises a slot in which the textile fire protection element is guided when it is in the protection arrangement, and wherein the slot is restricted on one side by a support edge and is arranged in relation to the textile fire protection element in such a way that the holding force (F.sub.H) is predominantly absorbed by the support edge.

4. The fire protection curtain according to claim 1 wherein the textile fire protection element has a coupling section that is held in a slot, and wherein the slot is restricted by one of a plurality of first support structures opposite a first support edge, wherein a swivelling of the coupling section is prevented when a tractive force (F.sub.S) is acting on the fire protection element.

5. The fire protection curtain of claim 4 wherein the first support edge is a first support edge, wherein the first support edge is arranged on a support section which extends along the closing surface (S), and wherein said one of the first support structures opposite the first support edge is a second support edge wherein the second support edge is arranged on a second support section which extends at least partially along a guide surface which forms a return angle () of at least 15 with the closing surface (S).

6. The fire protection curtain according to claim 4 wherein an opening direction (R) of the slot points away from the closing surface (S), and the textile fire protection element is moveable out of the slot in the opening direction (R).

7. The fire protection curtain according to claim 3 wherein the textile fire protection element has a projection that lies flat on the support edge if a tractive force (F.sub.S) acting in the closing surface (S) acts on the fire resistant material.

8. The fire protection curtain according to claim 1 wherein at least 90% of a length of the textile fire protection element lies on the support edge in a protection arrangement, and wherein the support edge exerts at least 90% of the holding force (F.sub.H), thereby forming a smoke-proof seal between the at least one guide track and the textile fire protection element.

9. The fire protection curtain according to claim 1 wherein the at least one guide track has a front surface, and wherein the closing surface (S) runs through the front surface in an outermost lying surface tercile.

10. The fire protection curtain according to claim 9 wherein the outermost lying surface tercile is a surface quartile of the front surface.

11. The fire protection curtain according to claim 1, wherein the part of the guide track exerting at least 80% of the holding force (F.sub.H) is arranged on a first support section, and wherein the fire protection curtain further comprises a second support section comprised of a first section and a second section, wherein the first section extends along a guide surface and the second section runs at an angle to the guide surface.

12. The fire protection curtain according to claim 1 further comprising at least one piping bar that is arranged to hold a lateral edge of the textile fire protection element in the at least one guide track, wherein the piping bar is arranged in the at least one guide track so that a cross-section surface (A) of the piping bar lies up to 85% on one side of the closing surface (S).

13. The fire protection curtain of claim 12 wherein the cross-section surface (A) lies completely on one side of the closing surface.

14. The fire protection curtain according to claim 1 wherein the at least one guide track is designed to exert the holding force (F.sub.H) across at least 80% of a height (h) of the at least one guide track.

15. The fire protection curtain according to claim 1 further comprising a light grid generation device for the monitoring of the closing surface (S) for foreign objects using a light grid, wherein a distance (d) between the light grid and the closing surface (S) is a maximum of 4 centimeters.

16. The fire protection curtain according to claim 15 wherein the distance (d) is a maximum of 2.5 centimeters.

17. A building, comprising: a wall in which an opening is arranged; and a fire protection curtain designed to seal the opening, wherein the fire protection curtain comprises a textile fire protection element which comprises a fire resistant material which counteracts the spread of fire, and which has a first side in the form of a front side and a second side in the form of a reverse side, wherein the textile fire protection element is configurable to be put into both a compact bearing arrangement and a protection arrangement in which the textile fire protection element counteracts the spread of a fire through the opening, and wherein the textile fire protection element extends along a closing surface (S) when in the protection arrangement, and at least two guide tracks, of which at least one guide track which guides the textile fire protection element when the textile fire protection element is in the protection arrangement, wherein the at least one guide track is configured to exert a holding force (F.sub.H) that counteracts a bulging of the textile fire protection element, and wherein at least 80% of the holding force (F.sub.H) is exerted on the textile fire protection element by a part of the guide track that is arranged on only one of the first and the second sides of the textile fire protection element, wherein the at least one guide track is arranged in front of the opening in a soffit on the wall, wherein the least one guide track comprises a support edge, wherein the textile fire protection element comprises rivets or buttons which abut the support edge, wherein the textile fire protection element has a bend at a position at which the textile fire protection element contacts the support edge, and wherein the textile fire protection element and the at least two guide tracks are configured such that the fire protection curtain is made to withstand a fire for at least 30 minutes according to EN 1634-3.

18. A fire protection curtain, comprising: a textile fire protection element which comprises a fire resistant material which counteracts the spread of fire, and which has a first side in the form of a front side and a second side in the form of a reverse side, wherein the textile fire protection element is configurable to be put into both a compact bearing arrangement and a protection arrangement in which the textile fire protection element counteracts the spread of a fire, and wherein the textile fire protection element extends along a closing surface (S) when in the protection arrangement, and at least two guide tracks, of which at least one guide track guides the textile fire protection element when the textile fire protection element is in the protection arrangement, wherein the at least one guide track is configured to exert a holding force (F.sub.H) that counteracts a bulging of the textile fire protection element, and wherein at least 80% of the holding force (F.sub.H) is exerted on the textile fire protection element by a part of the guide track that is arranged on only one of the first and the second sides of the textile fire protection element, wherein the least one guide track comprises a support edge, wherein the textile fire protection element comprises rivets or buttons which abut the support edge, wherein the textile fire protection element has a bend at a position at which the textile fire protection element contacts the support edge, and wherein the fire resistant material is according to DIN EN 13501-2 and 3.

19. A building, comprising: a wall in which an opening is arranged; and a fire protection curtain designed to seal the opening, wherein the fire protection curtain comprises a textile fire protection element which comprises a fire resistant material which counteracts the spread of fire, and which has a first side in the form of a front side and a second side in the form of a reverse side, wherein the textile fire protection element is configurable to be put into both a compact bearing arrangement and a protection arrangement in which the textile fire protection element counteracts the spread of a fire through the opening, and wherein the textile fire protection element extends along a closing surface (S) when in the protection arrangement, and at least two guide tracks, of which at least one guide track which guides the textile fire protection element when the textile fire protection element is in the protection arrangement, wherein the at least one guide track is configured to exert a holding force (F.sub.H) that counteracts a bulging of the textile fire protection element, and wherein at least 80% of the holding force (F.sub.H) is exerted on the textile fire protection element by a part of the guide track that is arranged on only one of the first and the second sides of the textile fire protection element, wherein the at least one guide track is arranged in front of the opening in a soffit on the wall, wherein the least one guide track comprises a support edge, wherein the textile fire protection element comprises rivets or buttons which abut the support edge, wherein the textile fire protection element has a bend at a position at which the textile fire protection element contacts the support edge, and wherein the fire resistant material is according to DIN EN 13501-2 and 3.

Description

DESCRIPTION OF THE DRAWINGS

(1) In the following, the invention will be explained in more detail in the attached drawings.

(2) FIG. 1 a schematic overview of a fire or smoke protection curtain according to an embodiment of the invention;

(3) FIG. 2a a cross-section through a guide track of a fire or smoke protection curtain according to the invention according to a first embodiment, wherein there is no tractive force acting on the fire protection element;

(4) FIG. 2b the guide track according to FIG. 2 when a tractive force is acting on it;

(5) FIG. 3 a cross-section through a guide track of a fire or smoke protection curtain according to the invention according to a second embodiment;

(6) FIG. 4 a cross-section through a guide track of a fire or smoke protection curtain according to the invention according to a third embodiment;

(7) FIG. 5 a cross-section through a guide track of a fire or smoke protection curtain according to the invention, which has a light grid generation device;

(8) FIG. 6 three-dimensional views of a guide track of a fire or smoke protection curtain according to the invention;

(9) FIG. 7 a perspective view of a fire protection element in a guide track of a fire or smoke protection curtain according to the invention according to a further embodiment according to FIG. 6;

(10) FIG. 8 a schematic view of a fire protection element of the embodiment according to FIG. 6;

(11) FIG. 9 depicts details of the fire protection element in the embodiment according to FIG. 6;

(12) FIGS. 10a, 10b show a further embodiment according to the invention, wherein in both FIGS. 10a and 10b the second support section having two sections that run at an angle to one another to increase the maximum holding force;

(13) FIG. 10c illustrates a further embodiment of the invention, wherein the projection of the fire protection element is formed by rivets;

(14) FIG. 11a an embodiment wherein the projection, as in FIGS. 6 and 7, is arranged on holding elements;

(15) FIG. 11b the guide track according to FIG. 11a in another perspective view; and

(16) FIGS. 12a 12b, and 12c depict further embodiments according to the invention.

DESCRIPTION

(17) FIG. 1 shows a fire or smoke protection curtain 10 according to the invention that is built into a wall 12 of a building according to the invention and that has a fire protection element 14 which is arranged to seal an opening 16. In the present case, the fire protection element 14 is made up of three webs that are sewn together in the wall 12. The fire or smoke protection curtain 10 also comprises a bottom bar 18.

(18) For the guiding of the fire protection element 14, the fire or smoke protection curtain 10 has a first guide track 20.1 and a second guide track 20.2, which guide the fire protection element 14 on opposite lateral edges 22.1, 22.2. The first guide track 20.1 has a height h, in the present case the second guide track 20.2 has the same height h. In the present case, the height h corresponds to a clearance height of the opening 16. However, it is also possible that the height h is smaller than the clearance height of the opening 16, for example the height h is at least 0.8 times, preferably at least 0.9 times, as high as the clearance height of the opening 16.

(19) If a force F.sub.D acts centrally on the fire protection element 14 it results in a tractive force F.sub.S that acts on the guide tracks 20.1, 20.2. The guide tracks exert a holding force F.sub.H in the opposite direction on the fire protection element 14.

(20) It should be noted that the fire or smoke protection curtain 10 has a winding shaft 24 onto which the fire protection element 14 is rolled up. For the motorised rolling up, a winding shaft motor 26 is arranged in the winding shaft 24, which is supplied with electricity by a control unit 28.

(21) FIG. 2a depicts a guide track 20 that is fixed to the wall 12, for example by means of a fastening clip 30 and at least one screw 32. The guide track 20 has a slot 34 through which a coupling section 36 of fire protection element 14 is threaded. The slot 34 is restricted on one side by a support edge 38. On the opposite side of the support edge 38, the slot 34 is restricted by a support structure 40, which is formed by a second support edge in the present case. Alternatively, the support structure may also be formed by a rod or a wall, none of the edges of which face the slot 34.

(22) The guide track 20 is, which represents a preferred embodiment, made of at least one, in the present case exactly one, plate 42.

(23) If the tractive force F.sub.S acts on the fire protection element 14, the coupling section 36 moves towards to the support edge 38 until the coupling section 36 is caught by the support edge 38. This situation is shown in FIG. 2. The tractive force F.sub.S is absorbed by the support edge 38, which exerts a holding force F.sub.H in the opposite direction on the fire protection element 14.

(24) It should be noted that the fire protection element 14 has a front side 44 and a reverse side 46. The nomenclature with regards to the front side and reverse side is generally arbitrary, but within the scope of the present description the side that is perceived as the reverse side 46 is the one on which the support edge 38 is arranged. If, when in the protection arrangement, the fire protection element 14 extends along a closing surface S in the form of a plane, as intended according to a preferred embodiment, this closing surface S divides the space into two half-spaces 39, 41, wherein the support edge 38 is arranged in the half space 39 that belongs to the reverse side.

(25) It should be noted that the guide track 20 exerts the holding force F.sub.H on the fire protection element 14 from one side only, namely the reverse side 46. In the embodiment according to FIG. 2, the guide track 20 only extends on one side of the closing surface S. However, it should be noted that this is not necessary.

(26) The support structure 40 prevents the coupling section 36 from making a swivelling movement, which is indicated by the arrow B. Due to the fact that this swivel movement B is prevented, the coupling section 36 cannot detach itself from the support edge 38 and remains caught in the guide track 20.

(27) FIG. 2b shows that, in the present embodiment, the holding force F.sub.H is only absorbed by the support edge 38. There is a force F.sub.40 acting on the support structure 40, but this only acts predominantly on the closing surface S in the normal direction. The force component of the force F.sub.40 that is acting on the closing surface S has a sign that is the reverse of that of the holding force F.sub.H. In other words, the support structure 40 also does not partially exert the holding force F.sub.H.

(28) FIG. 3 depicts an alternative embodiment of a guide track 20 of a fire or smoke protection curtain 10 according to the invention, wherein the slot 34 is covered by a cover plate 48. This cover plate guides the fire protection element 14 in the area of the guide track 20 and prevents the fire protection element 14 from being able to move in an opening direction R of the slot 34.

(29) FIG. 4 shows a further embodiment of a guide track 20 for a fire or smoke protection curtain 10 according to the invention, wherein the plate 42 is made up of a first component plate 50.1 and a second component plate 50.2. It should be recognised that the first support edge 38 is arranged on a support section 52 of the plate 42, which extends along the closing surface S. This should be understood to mean that an angle between a correction plane through the support section 52 and the closing surface S is small, for example smaller than 5. Alternatively it is also possible that the support section 52 extends at an angle to the closing surface S, so that >5 is applicable, the support section 52 then running in the direction of the reverse side 46.

(30) The second support edge 40 is arranged on a second support section 54 of the plate 42; in the present case on the component plate 50.2. The second support section 54 extends along a guide surface E.sub.54, which forms a return angle of at least 15 with the closing surface S. In the present case the return angle is =30. This enables the coupling section 36 to be held securely on the support edge 38.

(31) In the case shown in FIG. 2a, the support structure 40 is formed by a support edge that is arranged on the support section 54. As depicted in FIG. 2a, this may run along the closing surface S, which is a closing plane in the present case.

(32) FIG. 5 depicts a further embodiment of a guide track 20 for a fire or smoke protection curtain 10 according to the invention that is joined in an edge area between a soffit 56 and the surface of the wall 58, and thereby joined with the wall 12 in front of the soffit 56; in the present case it is screwed together.

(33) FIG. 5 also shows that the fire or smoke protection curtain 10 comprises a light grid generation device 60. This light grid generation device is connected to a control unit 28 and emits several light beams 62.1, 62.2 (see FIG. 1) that form a light grid 64 (see FIG. 1). If one of these light beams 62 is interrupted, the control unit 28 stops the winding shaft motor 26. FIG. 5 depicts that a distance d between the light grid 64 and the closing surface S is small and, in the present case, smaller than 4 cm. The light grid generation device 60 thereby represents a light barrier which monitors a surface for foreign objects.

(34) FIG. 6 shows a perspective view of another track 20 of a fire or smoke protection curtain 10 according to the invention. It should be recognised that the coupling section 36 of the fire protection element 14 is formed by a piece of fire resistant material that is turned over and fixed by means of a seam 66. This is how a turnover 67 is created. During operation, the support edge 38 lies flat on the seam 66 and transfers the holding force F.sub.H to the seam 66 and hence to a projection 72 that is formed by the turnover 67.

(35) It should be noted that the plate 42 has an expansion 68 on its top side so that, when the winding shaft 24 is rolling it up (see FIG. 1), the fire protection element 14 can be easily threaded.

(36) FIG. 7 depicts a further embodiment of a guide track 20 and a fire resistant material 14 of a fire or smoke protection curtain according to the invention. In this embodiment the fire protection element 14 has a holding element 70 in the form of a rivet 71. The projection 72 is arranged on the holding element 70, this projection being prevented from slipping by the support edge 38. The fire protection element 14 consequently has a lower flexibility in the area of the coupling section 36, which is where the projection 72 is situated. The projection 72 interacts with the support edge 38 and the increased stiffness and/or lower flexibility prevents the coupling section 36 from being able to slip out of the slot 34.

(37) FIG. 8 shows that the fire protection element 14 has a number of rivets 71.1, 71.2, . . . , onto each of which a projection 72.1, 72.2, . . . is arranged. After the introduction of the fire protection element 14 into the guide track 20 (see FIG. 7), the projections 72.n (n=1, 2, . . . ) lie flat on the support edge 38. The smaller the distance d.sub.71 between two rivets, the lower the probability that the fire protection element 14 will be able to slip out of the guide track.

(38) In the upper part of the picture it can be recognised that the rivets 71 have a projection height h.sub.46 in the direction of the reverse side 46. This preferably has a value of between 0.5 mm and 7 mm. It is possible and represents a preferred embodiment that the projection height h.sub.44 corresponds to the projection height h.sub.46 in the direction of the front side 44. Alternatively, for example, the projection height h.sub.44 in the direction of the front side 44 may be smaller than the projection height h.sub.46. The sum h.sub.44+h.sub.46 of both projection heights preferably has a maximum value of 8 mm, especially 7 mm.

(39) FIG. 9 depicts the fire protection element 14 in the embodiment according to FIG. 6. It should be noted that the turnover 67 is secured by the seam 66 (references without a numerical suffix refer to all respective corresponding objects). In each case, the projection 72 is arranged on the turnover 67.

(40) In the lower part of the picture it should be recognised that the turnovers 67.1, 67.2 comprise recesses 74.1, 74.2, . . . . These recesses, which represent a preferred embodiment, result in the fire protection element 14 being easier to wind up on a winding shaft 24 (see FIG. 1).

(41) FIG. 10a depicts a guide track 20 of a fire or smoke protection curtain according to the invention. It should be noted that the guide track 20 has a front surface 76. The front surface 76 is the surface that can be seen when one looks parallel to the closing surface S from the fire protection element 14 to the guide track 20. The front surface 76 can theoretically be divided into surface terciles 77.1, 77.2, 77.3 and/or surface quartiles 78.1, 78.2, 78.3, 78.4, all surface quartiles being of equal width and together forming the full width of the front surface 76. The first surface tercile 77.1 and the first surface quartile 78.1 are adjacent to the wall 12 to which the guide track 20 is fixed.

(42) It should be noted that the closing surface S runs through the front surface 76 in the outermost lying surface tercile 77.3 of the front surface 76. In the present case, the closing surface S also runs through the front surface 76 in the outermost lying surface quartile 78.4. In other words, the guide track 20 according to the invention functions without the space that would extend beyond the last surface tercile 77.3 with guide tracks according to the prior art. Looking from the wall 12, the guide track is thus considerably thinner behind the closing surface or closing plane S than in front of it.

(43) In the present case, the second support section 54 of the guide track 20 has a first section 80.1 that extends along the guide surface E.sub.54, and a second section 80.2. The support edge 40 separates the two sections 80.1, 80.2 from one another. The second section 80.2 runs at an angle to the guide surface E.sub.54. In the present case, an angle between the guide surface E.sub.54 and the direction of extension of the second section 80.2 has a value of 15 to 45, in the present case it is approximately 30.

(44) Due to the fact that the sections 80.1, 80.2 run at an angle to one another, the second support section 54 yields by an especially small amount. The projection 72 is therefore securely held to the support edge 38.

(45) FIG. 10b shows the guide track 20 according to FIG. 10a, wherein the tractive force F.sub.S was applied to the fire protection element 14. It should be noted that the slot 34 narrows due to the tractive force F.sub.S. The tractive force F.sub.S causes only certain parts of the guide track to move in the direction of the tractive force, those parts being located in the first half-space 39; in the present case that is the plate on which the support edge 38 is arranged. The plate with the support section 54 does not move in the direction of the tractive force, but rather slightly in a direction perpendicular to it.

(46) FIG. 10c depicts a further embodiment of a guide track 10 and a fire protection element 14 of a fire or smoke protection curtain 10 according to the invention. It should be recognized that the projection 72 in this embodiment is arranged on a holding element 70.

(47) FIG. 10c also depicts the acting forces in detail. The projection 72 presses onto the support edge 38. The support edge 38 exerts the support edge force 38 on the projection 72. The coupling section 36.14 exerts the coupling section force F.sub.36 on the guide track 20; in the present case, on the second support section 54. The feature that the former force is at least predominantly absorbed by the support edge 38 should especially be understood to mean that
|{right arrow over (F)}.sub.36|.Math.{right arrow over (S)}k|{right arrow over (F)}.sup.H|.Math.{right arrow over (S)}(1)
where k 0.8, k preferably equals 0.8. In addition, it is preferable if
{right arrow over (F)}.sub.36.Math.{right arrow over (S)}0.(2)

(48) Here, {right arrow over (S)} is the vector that lies in the closing surface S and runs towards the guide track. As a general rule, the vector {right arrow over (S)} stands perpendicular on the front surface 76.

(49) FIG. 11a shows an embodiment wherein the projection, as in FIGS. 6 and 7, is arranged on holding elements 70. Here, the projection height h.sub.46 (see FIG. 8, upper part of the picture) is greater than the projection height h.sub.44. This results in the holding element 70 lying flat on the support edge 38 with the part that has the greater projection height.

(50) FIG. 11b depicts the guide track according to FIG. 11a in another perspective view.

(51) FIG. 12a shows a further embodiment of a guide track 20 of a fire or smoke protection curtain according to the invention, which has piping 82 in the form of a piping bar. In its coupling section 36, the fire protection element 14 runs around the piping 82. The holding force F.sub.H is exerted by the support edge 38.

(52) The piping bar 83 holds the lateral edge of the fire protection element 14 in the guide track 20 and is arranged in the guide track 14 in such a way that the cross-sectional area A of the piping bar 83 lies completely on the side of the reverse side 46, i.e. the wall side in this case, of the fire protection element 14. In the present case, the cross-sectional area A also lies entirely on the wall side of the closing surface S, which is a closing plane here.

(53) FIG. 12b depicts a further embodiment according to the invention which differs from the otherwise structurally identical embodiment according to FIG. 10c in that the piping bar 82 results in the formation of the projection 72. A part of the guide track 20 does indeed extend into the second half-space 41, but these components do not absorb the holding force.

(54) FIG. 12c shows a further embodiment with a number of holding elements 70, of which only the holding element 70.1 is labelled. The holding elements have a concave lateral surface which interacts positively with the support edges 38, 40.

(55) TABLE-US-00001 Reference list 10 fire or smoke protection curtain 12 wall 14 fire protection element 16 opening 20 guide track 22 lateral edge 24 winding shaft 26 winding shaft motor 28 control unit 30 fastening clip 32 screw 34 slot 36 coupling section 38 support edge 39 first half-space 40 support structure, second support edge 41 second half-space 42 plate 44 front side 46 reverse side 48 cover plate 50 component plate 52 support section 54 second support section 56 soffit 57 turnover 58 wall surface 60 light grid generation device 62 light beam 64 light grid 66 turnover 67 turnover 68 expansion 70 holding element 71 rivet 72 projection 74 recess 76 front surface 77 surface tercile 78 surface quartile 80 section 82 piping return angle B swivel movement d distance E.sub.54 guide surface F.sub.D force F.sub.H holding force F.sub.S tractive force F.sub.38 support edge force F.sub.36 coupling section force h projection height H projection height R opening direction S closing surface, closing plane