DK2824270T3

DK2824270T3 - Surface element for a fire protective glass section, in particular a glass door for fire protection purposes, in order to avoid fire and smoke penetration from one room to another in case of fire

Info

Publication number: DK2824270T3
Application number: DK14175689.0T
Authority: DK
Inventors: Günter Wiedemann
Original assignee: Promat Gmbh
Priority date: 2013-07-11
Filing date: 2014-07-03
Publication date: 2017-08-21
Also published as: ES2626958T3; DE202013103100U1; PL2824270T3; EP2824270A1; PT2824270T; EP2824270B1

Description

DESCRIPTION

The invention relates to an area element, of a fire protection glazing, more particularly a glass door for fire protection purposes for preventing fire and smoke from spreading from one room into another room in the event of a fire, comprising a fire protection pane which contains a fire protection means and which is held by a frame which consists of frame profiles which are arranged on both sides of the pane and are connected to each other by at least one connection device.

Different types of room-separating fire protection glazings are known from the prior art. They generally consist of a plurality of area elements which are arranged next to one another and which each have a fire protection pane which contains a fire protection means and which is held by a peripheral frame made up of frame profiles which are arranged on each side of the fire protection pane and are connected to each other by connectors. As a result of the room-separating function a glass door is frequently integrated or provided as the area element of a fire protection glazing of this kind, wherein this glass door is likewise designed suitable for fire protection purposes and is held for pivotal movement by its peripheral frame. Obviously a glass door of this kind can also be held directly in a door frame arranged on a fixed side element.

Fire protection glazing of this kind is known from the German Gebrauchsmuster 9103671. It comprises as the area element a glass door for fire protection purposes with a fire protection pane which contains a foaming agent as the protective material and which is held in a door frame which is made up of frame profiles. As frame profiles are used hollow profiles of steel which are arranged on both sides of the fire protection pane and which are provided on their perpendicular edges with a flat metal profile. The metal profile connects and fixes the frame profiles which are located on each side of the door panel to one another and determines the spacing of these relative to one another wherein the spacing can be different depending on the thickness of the door panel. In practice it has proved disadvantageous that the construction of such a door on site is complicated and liable to error and furthermore thermal bridges are produced by the large surface area connection of the frame parts on each side to one another which make it difficult to meet the legal fire protection regulations. Finally when the door is opened the metal profile is visible and thus impairs the overall aesthetic appearance of the door. DE 39 07 280 A1 discloses an area element according to the preamble of claim 1.

The object of the invention is to provide an area element of a fire protection glazing, more particularly a glass door for fire protection purposes which avoids the aforementioned disadvantages, is simple to construct and easy to fit, is optically acceptable and meets the increased fire protection requirements through a substantive thermal separation of the external and internal frame parts from one another.

This is achieved according to the invention by the combination of the features of claim 1.

The basic idea of the present invention therefore lies in arranging the frame profiles to protrude around the edges relative to the fire protection pane to provide a free space in which internal connectors as well as a fire protection insulation can be arranged so that an extensive thermal separation of the fire-side frame profiles from the frame profiles facing away from the fire is provided in the event of fire. The connection of the frame profiles to one another is nevertheless releasable at any time so that the fire protection pane can be easily replaced where applicable. The connection device itself is simple to construct, can be fitted on site without any complicated adjusting and positioning measures and is unobtrusive which widens the aesthetic design possibilities .

The fire protection pane preferably has two glass panes spaced parallel from one another by means of an edging, and the space between the glass panes enclosed by the edging is filled with a fire protection gel. The frame profiles themselves can be formed as hollow profiles of steel with a rectangular cross-section wherein the thickness of the internal and external profiles opposite one another can be different if, by way of example when installing a door in a fire protection glazing, great closing forces from the movement of the door have to be absorbed on one side of the door by the steel profiles of the associated door rail or the adjoining area elements.

The design and arrangement according to the invention of the connectors advantageously makes it possible to seal the fire protection pane around the edges of the respective frame profile by using a dry seal instead of the wet-processed silicon seal which has previously been considered necessary. It is advantageous to provide the groove-shaped free space circumferentially around the fire protection pane, the frame corresponding to this, and thus to arrange on each side of the area element several connectors at a distance from one another. The form strip of fire protection material according to the invention fills the free space substantially completely, encloses the connectors and is in contact with the frame profiles in order to optimize the fire protection effect wherein the fixing element of each connector can be screwed in through the form strip through the connecting sleeve to fix the connecting bolt with form-fitting engagement. The form strip itself more advantageously consists of mineral fire protection material.

In addition it can be proposed to cover the form strip on the outside by a strip of intumescent fire protection material in order to ensure a joint closure in the event of fire. Should the area element be a glass door then a sealing strip of intumescent fire protection material ensures that during normal operation the abutting edges are covered to improve the optical appearance and in the event of fire the existing door gap is sealed. The connectors which are arranged on the inside between the frame profiles are then extremely well protected and are arranged invisible from outside.

The threaded part of the connecting sleeve is preferably a screw wherein in the case of frame profiles of metal it is preferable to use as the threaded part a cylinder screw which can be screwed into a counter thread of the frame profile. It is furthermore advantageous to configure the transverse bore in the wall of the connecting sleeve as full-length and to provide it with a thread wherein the fixing element can be a headless screw which is provided with a corresponding counter thread. Two transverse bores of this kind arranged crossing one another can also be provided in order to make it easier to insert the fixing element.

Just as the threaded part of the connecting sleeve can be a screw it is proposed to configure the threaded part of the connecting bolt as a screw and also here to use a cylinder screw of metal which can be screwed into a counter thread of the frame profile.

The radial groove formed on the cylinder part of the connecting bolt is preferably provided with tapered groove flanks in order to enable a close-fitting insertion of the fixing element into the radial groove and a secure fixing within the tolerance range of the close fit even where the axial alignment with the transverse bore is not perfect. The frame profiles which are to be connected are also then fixed and tensioned securely against one another if there is any play.

If the area element according to the invention is a glass door for fire protection purposes it is advantageous to arrange the frame profiles of one side of the fire protection pane off-set to the frame profiles of the other side to form a rebated edge and to configure the rebated edge as a door stop, wherein a metal strip protruding into the join can be arranged between the form strip of fire protection material and the frame profile forming the rebated edge, the said metal strip being held by the connectors. The metal strip more advantageously consists of aluminium.

Further details, features and advantages of the subject of the invention are apparent from the following description of the associated drawings which illustrate diagrammatically a preferred embodiment of an area element according to the invention in the form of a glass door for fire protection purposes. In the drawings:

Fig. 1 shows a glass door in a diagrammatic front view as part of a fire protection glazing;

Fig. 2 shows a section according to the line A-A of Fig. 1;

Fig. 3 shows a section according to the line B-B of Fig. 1;

Fig. 4 shows the right hand part of the sectional view of the glass door of Fig. 1 in Fig. 2 in the drawings at an intersection point which clarifies the connection of the frame profiles which are arranged spaced from each other on each side;

Fig. 5 shows a connecting sleeve of the connector in side view;

Fig. 6 shows the connecting sleeve 5 in the section A-A of Fig. 5;

Fig. 7 shows the connecting sleeve of Figs. 5 and 6 in a perspective view;

Fig. 8 shows a connecting bolt of the connector in side view;

Fig. 9 shows the connecting bolt in section B-B of Fig. 8;

Fig. 10 shows the connecting bolt of Figs. 8 and 9 in perspective view; and

Fig. 11 shows the subject of Fig. 4 in perspective view, partially in section.

The door T illustrated in Fig. 1 of the drawings comprises a fire protection pane 1 which is made from two ESG glass panes 2, 3 which are held spaced against one another by means of a spacer 8 and a PU edging, so that a closed internal space is formed which is filled with a gel as the fire protection means. The fire protection pane 1 is held on all sides by a circumferential frame which comprises hollow profiles 4, 5 of steel. The circumferential frame is attached via hinges S to frame profiles 24 which belong to an adjoining area element of a fire protection glazing, which is not shown in further detail. The door furthermore has on the side opposite the hinge side a door catch for actuating a locking mechanism (not shown). Finally a skylight, which is likewise not described in further detail, is located above the glass door T.

The area elements of a fire protection glazing adjoining the door T are according to Fig. 2 provided with frame profiles 23, 24 of different thickness to absorb the high forces which occur when operating the door. The hollow profiles of steel having a rectangular cross-section and used in the exemplary embodiment as frame profiles 23, 24 have the different thickness described wherein the rear frame profile 23 in the door closing direction is designed three times as thick as the front frame profile 24 in the closing direction. The illustration in Fig. 2 shows that on both sides the perpendicular profiles of the area elements holding the door are provided with frame profiles formed in this manner.

The section of the glass door 1 illustrated in Fig. 4 of the drawings shows the connection device which will be described in further detail below and with which the fire protection pane 1 is held around the edges on each side by the frame profiles 4 and 5 in the form of hollow steel profiles of rectangular cross-section. Each of the two glass panes 2 and 3 is adhesively bonded to the associated frame profile 4, 5 by an elastocell foam strip 22 and a silicon sealant 6. Instead of using a silicon sealant 6 it is possible to install a dry seal, e.g. in the form of a rubber profile, since the profiles are tensioned with one another through the connection device 7 according to the invention.

The frame profiles 4 and 5 which form the outer and inner frames are arranged on each side of the fire protection pane 1 to project beyond the edges of the latter so that a groovelike free space F is produced between the frame profiles 4 and 4, and 23 and 2 respectively on each side, wherein the connection device in the form of connectors 7 is arranged in the free space, wherein a form strip FS of fire protection material is arranged in the free space F, covering the connectors 7. In addition the form strip FS is covered on the outside by an intumescent strip 25.

The protrusion of the frame profiles is undertaken in such a way that a rebated edge SF is formed. For this the frame profiles 4 of one side of the fire protection pane are arranged off-set (set back) relative to the frame profiles 5 of the other side of the fire protection pane, by using frame profiles 4 of reduced width compared with the width of the frame profiles 5. The rebated edge SF formed in this way is configured as a door stop wherein the associated door case has a corresponding shaping. A metal strip 26 of aluminium protruding into the join is arranged between the form strip FS and the frame profile 4 forming the rebated edge SF and is held by the connectors 7 in order to reinforce the stop.

The connection device 7 according to the invention whose parts are shown in detail in Figs. 5 to 10 holds the frame profiles at a distance from one another and connects them releasably to one another. The connection device 7 consists of a connecting sleeve 11 according to Figs. 5, 6 and 7, a connecting bolt 9 according to Figs. 8, 9 and 10, and a fixation element 10 which is designed as a headless screw according to Fig. 4 and Fig. 11.

According to Figs. 5, 6 and 7 the connecting sleeve 11 has a pot-shaped configuration of steel with a cylindrical wall 12 which is traversed crosswise by two full-length bores 13 which are provided with an internal thread, as can be seen more particularly in Fig. 6 of the drawings. The thread is provided to enable the headless screw 10, which is used as the fixation element, to be screwed into the connecting sleeve 11.

The connecting sleeve 11 obviously has a base 14 and a hollow internal space 15 inside the wall 12 which is designed in the manner of a blind hole bore in the illustrated exemplary embodiment. The upper edge of the wall widens out ring-shaped in order to provide an expansion of the bearing surface on the frame profile 4. A threaded part, designed as a cylinder screw 16 of steel, extends from the base 14 of the connecting sleeve 11 coaxially with the hollow internal space and can be screwed into the frame profile 5. In order to enable the screw-in described, the frame profile 5 is provided at a corresponding point with a rivet nut 17 with countersunk head according to Fig. 4 of the drawings.

The second element of the connection device, namely the connecting bolt 9, is shown in Figs. 8, 9 and 10. This connecting bolt 9 is also made of steel and has a threaded part in the form of a cylinder screw 18 for connection with the frame profile 4, and a co-axial cylinder part 19 for insertion into the hollow internal space 15 of the pot-shaped connecting sleeve 11. The cylinder part 19 is provided at a distance from its free head end with a radial groove 20 which has tapered groove flanks according to the illustration. In the assembled state this radial groove 20 lies in the axis of the transverse bores 13 of the connecting sleeve 11 so that the headless screw 10 screwed into the latter can engage in the radial groove 20 of the connecting bolt 9 with the parts tensioned with one another. Since the connecting bolt 9 is screwed with its cylinder screw 18 into a rivet nut 21 with internal thread which is inserted in the frame profile 4 it is possible to produce the releasable connection between the two frame profiles at the proposed spacing. The connection is shown in perspective in Fig. 11 of the drawings in conjunction with the diagrammatic view in Fig. 4, wherein the construction of the connection can be undertaken in detail as follows:

First the frame profiles 4 and 5, which form the outer and inner frames of the fire protection pane 1, are provided at the proposed connecting point with the rivet nuts 21 and 17 or alternatively with a cut-in thread. The connecting sleeve 11, provided as the spacer, is then screwed by its cylinder screw 16 into the internal thread of the rivet nut 17 and thus produces the connection with the frame profile 5. On the opposite side the cylinder screw 18 of the connecting bolt 9 is screwed into the rivet nut 21 of the frame profile 4 so that now the two frame parts are set up to hold and fix the fire protection pane 1. For this, the frame profile 5 is positioned in known way on the fire protection pane 1 and the frame profile 4 is then placed from the other side against the fire protection pane 1 so that the connecting bolt 9 engages in the hollow internal space 15 of the connecting sleeve 11 and the sleeve itself comes to bear by its free edge as a stop against the frame profile 4. The spacing is then selected so that the fire protection pane 1 is held by its elastocell foam strip 22, which is applied around the edges, on the one hand securely inside the frame profiles 4 and 5, whilst on the other side however the tensioning pressure applied is not so high that deformation and excessive pressure bears on the glass panes 2 and 3 with the internal gel layer. Finally by screwing in the headless screw 10 as the fixation element the resulting connection is secured and tensioned wherein through the tapered design of the radial groove 20 in the cylinder part 19 up to the connecting bolt an extremely solid connection can be produced whilst compensating for any tolerances, which (connection) can however be released at any time, such as for example when the fire protection pane 1 has to be replaced. It is expressly pointed out that the above description relates to all connectors used which are required to connect the frame parts to one another which hold the fire protection pane in its entirety.

The frame profiles 4 and 5 are finally adhesively bonded to the fire protection pane 1 in the peripheral regions by means of the silicon sealant 6.

REFERENCE NUMERAL LIST T Door F Free space FS Form strip SF Rebate edge S Hinge 1 Fire protection pane 2 Glass pane 3 Glass pane 4 Hollow profile (frame profile) 5 Hollow profile (frame profile) 6 Silicon sealant 7 Connection device (connector) 8 Spacer 9 Connecting bolt 10 Fixation element (headless screw) 11 Connecting sleeve 12 Wall 13 Bores 14 Base 15 Internal space (hollow space) 16 Cylinder screw (threaded part) 17 Rivet nut 18 Cylinder screw 19 Cylinder part 20 Radial groove 21 Rivet nut 22 Elastocell foam strip 23 Frame profile 24 Frame profile 25 Strip of intumescent fire protection material 26 Metal strip as stop

Claims

1. Surface element for a fire protective glass section, in particular a glass door for fire protection purposes, in order to avoid the penetration of fire and smoke from one room to another in the event of fire, with a pane (1) held by a frame comprising of frame profiles (4, 5; 23, 24) arranged on both sides of the pane (1) and connected to each other by means of a connecting device (7), wherein the frame profiles (4, 5; 23, 24) on both sides of the pane (1) on the rim side projecting over it are arranged such that between the two-sided frame profiles (4, 5; 23, 24) is provided a groove-free space (F), in which the connecting device (7) is arranged, and wherein a protective strip (FS) of fire protection material is provided in the free space (F), covering or enclosing the connecting device (7), the molding strip (FS) of fire protection material substantially filling the free space (F), enclosing the connector (7) and directly or indirectly genuine contact with the frame profiles (4, 5 and 23, 24, respectively), characterized in that the pane is a fire protection pane (1) containing a fire protection means and the connecting device (7) consists of - a substantially pot-shaped connecting casing (11), the bottom (14) of which is provided with a threaded part (17) which can be screwed into one frame profile (5) and which the wall of the connecting sleeve (12) is provided with a cross bore (13), a connecting bolt (9) with a threaded part ( 21) for connection with the second, opposite frame profile (4) and a cylinder part (18) for insertion into the cavity (15) of the pot-shaped connecting sleeve (11), which cylinder part (19) is provided with an annular groove (20), and of - a fixing element (10) for form-fitting fixing of the connecting bolt (9) in the connecting sheath (11), whereby the fixing element (10) can be screwed into the connecting sheath (11) for the form-fitting fixing of the connecting bolt (9). .

Surface element according to claim 1, characterized in that the fire protection pane (1) has two glass discs (2, 3) which are parallel to each other by means of an edge connection (8) and the space enclosed by the edge connection (8) between the glass disks (2, 3) are filled with a fire protective gel.

Surface element according to claim 1 or claim 2, characterized in that the frame profiles (4, 5 and 23, 24, respectively) are formed as cross-sectional rectangular hollow profiles of steel.

Surface element according to claim 3, characterized in that the opposite inner and outer frame profiles (23, 24) have different thicknesses.

Surface element according to one of claims 1 to 4, characterized in that the fire protection pane (1) on the edge side of the respective frame profile (4, 5 and 23, 24, respectively) is sealed by means of a dry seal.

Surface element according to one of claims 1 to 5, characterized in that the groove-shaped clearance (F) is arranged circumferentially around the fire protection pane (1) corresponding to the frame.

Surface element according to one of claims 1 to 6, characterized in that several spacers (7) are spaced apart on each of its sides.

Surface element according to one of claims 1 to 7, characterized in that the molding strip (FS) consists of mineral fire protection material.

Surface element according to one of claims 1 to 8, characterized in that the molding strip (FS) is covered externally with a strip (25) of intumescent fire protection material.

Surface element according to one of claims 1 to 9, characterized in that the threaded part (16) of the connecting sheath (11) is a screw, in particular a metal cylinder screw, which can be screwed into a counter-thread (17) in the frame profile (5).

Surface element according to one of claims 1 to 10, characterized in that the transverse bore (13) in the wall (12) of the pot-shaped connecting sleeve (11) is provided with a thread, the fixing element (10) being provided with a tapping screw. a corresponding headwind.

Surface element according to one of claims 1 to 11, characterized in that two transverse bores (13) are arranged crosswise.

Surface element according to one of claims 1 to 12, characterized in that the threaded part (18) of the connecting bolt (9) is a screw, in particular a metal cylinder screw, which can be screwed into a counter-thread in the frame profile (4).

Surface element according to one of claims 1 to 13, characterized in that the annular groove (20) has conically shaped grooves.

Surface element according to one of claims 1 to 14, characterized in that the pot-shaped connecting sleeve (11) is provided with a support ring on the open end.

Surface element according to one of claims 1 to 15, characterized in that the connecting sleeve (11) is provided with a molding element, in particular a slot (23) for mold-closing contact with a tool.

Surface element according to claim 15 or claim 16, characterized in that the slot (23) is arranged in the support ring and extends parallel to the transverse bore (13).

Surface element, especially in the form of a glass door for fire protection purposes according to one of claims 1 to 17, characterized in that the frame profiles (4, 5, and 23, 24), respectively, on one side of the fire protection pane (1) for the design of a step drop (SF) is arranged offset relative to the frame profiles (4, 5 and 23, 24, respectively) on the other hand, and the step drop (SF) is designed as a door drop.

Surface element according to claim 18, characterized in that a metal strip (26) protruding into the joint is arranged between the molding strip (SF) of fire protection material and the frame profile which forms the step-fold (SF). retained in the clearance (F).

Surface element according to claim 19, characterized in that the metal strip consists of aluminum.