EP3859111B1 - Fixing system for a fire or smoke protection door and arrangement with such a system - Google Patents

Description

The present invention relates to a hold-open system for a fire or smoke protection door with a door closer, with a releasable hold-open device for holding a wing of the door in an open position, a triggering device for releasing the hold-open device, and an actuating element for the triggering device, the triggering device having the actuating element is connected wirelessly for communication and is set up to release the locking device when the actuating element is actuated, and wherein the triggering device is set up to monitor the connection to the actuating element, which includes the locking device being released in the event of a fault or break in the connection.

A hold-open system is a system for keeping fire or smoke protection doors open. The hold-open system typically consists of devices or device combinations that are suitable for making the function of locking means, such as a spring, ineffective in a controlled manner.

A typical hold-open system includes in particular an energy supply, such as an electrical mains supply, a rechargeable battery and/or a battery. A locking device can be designed, for example, as an electromagnetic device, for example as an electromagnet, or also mechanically, for example as a locking wedge. The hold-open system typically also includes a fire detector, such as a smoke detector, in particular an optical one, and/or a heat detector. Such detectors can be designed, for example, as ceiling detectors, ie arranged on the ceiling, or as lintel detectors, ie arranged on a door lintel. In addition, a manual release button is often available manual operation provided. Furthermore, in particular a triggering device for releasing the locking device, in particular in the event of a fire, is provided.

The use of a wireless component designed as a fire alarm or manual release button in connection with a hold-open system is, for example, from EP 3 543 982 A1 , EP 3 543 446 A1 or DE 10 2018 204 207 A1 famous.

In the event of a fire alarm, manual triggering or - especially in the case of a radio connection between the triggering device and an actuating element - in the event of a fault in the connection, the triggering device releases the locking device and any open door leaf is closed by the closing means. If the hold-open system is triggered, the locking device behaves like a door closer without a hold-open system. The door can thus be opened manually against the door closer, but is otherwise held in a closed position. The door can thus act as a fire or smoke barrier.

It is known that a wireless connection between the triggering device and an actuating element, in particular a fire alarm and a manual trigger button, is monitored by the triggering device. If there is a problem with the connection, the release device releases the locking device.

For example, a national German guideline for hold-open systems requires that fire detectors measure a suitable parameter for detecting a fire in the area to be monitored continuously or at successive time intervals and, if a set limit value is exceeded, send a message to the triggering device via monitored transmission paths.

This requirement for monitored transmission paths between fire detectors, e.g. ceiling detectors, or manual release buttons and the release device can lead to problems, especially with a radio transmission path, if the release device is on one side of a fire protection wall, with fire detectors or manual release buttons on the other side . This is especially true when the door is closed. Because Fire protection walls are usually made of reinforced concrete and fire protection doors are made of metal.

In the case of unfavorable installation situations, the radio connection can be disrupted, whereupon the triggering device triggers the locking device due to the connection monitoring.

In order to then reactivate the locking device, i.e. to lock the door again, the locking device usually has to be reset manually and locally, i.e. on site. In addition, this usually has to be authenticated, i. H. an authorized person must go to the door in question, authenticate themselves with a key and thus reactivate the hold-open device.

It is an object of the invention to simplify the operation of a hold-open system of the type mentioned at the outset. In particular, safe operation of the hold-open system in terms of fire protection should be ensured, which is also robust even when the fire protection door is closed.

This object is achieved by a hold-open system with the features according to claim 1, and in particular in that the hold-open system includes a detection device for detecting whether the leaf is fixed or not and / or is in or outside an open position, and that the triggering device connected to the detection device and arranged to suspend monitoring when the leaf is not locked and/or not in the open position.

The "open position" means in particular a position corresponding to the determination and/or a maximum open position. "Not in the open position" means at least one position other than the open position. It is therefore not absolutely necessary, but possible, in all positions other than the open position suspend surveillance. In principle, other conditions for suspending the monitoring can also occur.

A release device of a hold-open system is usually set up so that after the release of the hold-open device by the release device, the wing of the door can only be detected by the hold-open device after the release device has been reset, in particular after an authenticated reset, in particular if the release occurs due to a fault or break in the wireless connection . The reset usually has to be done locally or on site, e.g. with a key.

Suspending monitoring significantly reduces the likelihood of detecting a radio interference or loss, reducing the need for resets. However, this is achieved without compromising fire protection, because surveillance is only suspended in situations that are safe in terms of fire protection, namely when the door is not locked.

When the door leaf is closed, the fire or smoke protection door is in a safe condition. The closed fire or smoke protection door forms a secure fire or smoke barrier. The closed position can be referred to as the first safe state.

If the door leaf is at least partially open but the locking device is not locked by the locking device, the fire or smoke protection door is also in a safe condition. Because the closing means is effective and brings the door leaf into the closed position. The non-closed or at least partially open position, in which the locking device is not locked, is referred to as the second safe state. In the case of a slide rail with an integrated locking device, this condition corresponds, for example, to one in which a sliding block is not located behind a mechanical locking means, in particular a locking wedge, of the locking device.

The condition in which the wing is locked is referred to as an unsafe condition since the locking means is overridden by the locking device. In the unsafe state, the wireless connection between the triggering device and the actuating element must be monitored in accordance with the guidelines.

The invention now includes in particular the idea that the connection is monitored only or at least when the fire or smoke protection door is not in a safe state, ie in an unsafe state. If, on the other hand, the door is in a safe state, in particular in the first or second safe state, the triggering device preferably monitors only a few connections or none at all to actuating elements, such as ceiling detectors or manual trigger buttons.

In particular, the triggering device comprises one or more inputs and/or connections in order to monitor the door status or the status of the locking device via respectively associated detection devices.

The fire or smoke protection door preferably includes a door closer, for example with a closer spring. The locking device can, for example, be coupled to the door closer or integrated into the door closer. Alternatively or additionally, a locking device can be configured separately from a door closer.

In particular, the triggering device can be set up to suspend the monitoring when the leaf is in an only partially open position and/or is in a closed position or when the sash is in a safe condition.

In addition, it can advantageously be provided that the triggering device is set up to carry out the monitoring only when the door leaf is fixed and/or is in the open position.

According to one embodiment, it is provided that the detection device is set up to detect whether the leaf is in a closed position, ie a first safe state. For example, the detection device can include a door contact, e.g. a magnetic and/or reed switch for this purpose. In particular, a magnet can be attached to the door leaf in order to switch a magnet and/or reed switch on the frame. Alternatively or additionally, the detection device can be designed to check the position of a sliding block, a lever and/or a linkage of a door closer or other devices to determine whether these correspond to a closed leaf.

Alternatively or additionally, one or the detection device can be set up to detect whether the wing is fixed, ie whether an unsafe condition exists or not. For example, such a detection device can be set up to detect whether an element coupled to the door leaf and/or door closer, in particular a sliding block, is engaged with a mechanical locking element, such as a locking wedge.

In principle, the hold-open system can also have several, in particular different, detection devices in order to reliably detect the safe and unsafe states.

In a further embodiment it is provided that the triggering device and/or a radio module of the triggering device for the wireless connection with the actuating element is arranged on a first side of the door and/or the wall in which the door is provided, with the actuating element and/or or a radio module of the actuating element is arranged on a second side of the door or the wall. The triggering device or its radio module on the one hand and the actuating element or its radio module on the other hand are therefore arranged on different sides of the wall, in particular a fire protection wall. The wall can interfere with a radio link between the triggering device and the actuating element. A fire protection wall in particular usually comprises reinforced concrete. A fire or smoke protection door is often made of metal, at least to a large extent. Walls and doors of this type can particularly interfere with a radio connection. The invention reduces the probability of unwanted triggering due to a connection failure.

For example, two or more actuating elements wirelessly connected to the triggering device can be provided, with the triggering device being set up to suspend monitoring for at least one connection if the leaf is not locked and/or is not in the open position. In particular, one actuating element can be arranged on the first side and one on the second side, with the monitoring of the connection to the actuating element on the second side being suspended. In general, for example, monitoring may be suspended for only some or for all connections to actuators when the leaf is not locked and/or not in the open position.

Basically, the locking system can include different combinations of different actuators, of which in particular at least one may be connected to the trigger device by means of a cable.

In general, a particularly conventional connection between the triggering device and an actuating element can have a particularly multi-wire cable connection. Such can include, for example, an energy supply for the actuating element. The cable connection can generally include connection or line monitoring, for example by termination using a resistor.

A connection, in particular an intelligent connection, can include, for example, a cable connection, in particular a multi-wire connection, which includes, for example, a power supply and/or communication, in particular serial, between the triggering device and the actuating element. This cable connection can also include connection monitoring, for example, with monitoring of the communication and/or a “heartbeat”.

A connection, in particular an intelligent connection, can comprise a radio connection, for example. The actuating element can be supplied with energy, for example, by a battery or also separately by cable. The radio connection can, for example, include serial communication, for example with monitoring of the communication and/or a “heartbeat”.

In particular, several actuating elements can be connected to the triggering device with different connections, in particular in the manner described above. In general, the hold-open system or the triggering device can be integrated into a building network, which in particular comprises a large number of actuating elements and/or is set up for central actuation of the triggering device.

An actuating element can be designed in particular as a manual release button. Such can be attached to a wall near the door, for example.

An actuating element can also be designed as a smoke and/or heat detector, for example.

An actuating element can generally be embodied, for example, as a ceiling or lintel detector.

According to one embodiment, it is provided that the hold-open system includes the door closer, with the hold-open device being coupled to the door closer. The locking device can, for example, interact with a slide block of the door closer and/or be integrated into a slide rail. In principle, a locking device can also be integrated into the door closer, for example. Alternatively or additionally, a locking device can be formed separately from the door closer, for example interacting with the wing or a holding element fixedly mounted on the wing. In general, a locking device can include a holding magnet and/or a locking mechanism, for example.

A further embodiment includes that the triggering device is set up to resume monitoring when the wing is locked and/or placed in the open position. This means that after returning to the insecure state, the connection is reliably monitored again. As soon as the fire or smoke protection door leaves the safe state, the triggering device preferably monitors all connections to actuating elements again.

The object of the invention is also achieved by an arrangement with a fire protection door and a hold-open system of the type described above.

Furthermore, the object of the invention is also achieved by an operating method for a hold-open system or an arrangement with such a system, which method is not currently claimed separately, the method being designed in accordance with the invention in terms of the method.

It goes without saying that the arresting system described herein, the arrangement and the method can be advantageously further developed by individual or multiple features and generally in the sense of the respective other aspects.

The invention is explained below purely by way of example with reference to the schematic drawing.

the 1 shows in perspective a fire protection door that separates two rooms from each other.

A door 10 is shown with the leaf 12 in an open position. In this position, the wing 12 is fixed, namely in this embodiment by a locking device 14 which is arranged in a housing 15 on the lintel side and coupled to the wing 12 via a linkage.

In this embodiment, a door closer 16 is mounted on the wing 12 , namely on a side of the wing facing away from the viewer, and coupled via the linkage to a slide rail arranged in the housing 15 . The locking device 14 engages in particular on a slide block guided in the slide rail and coupled to the door closer 16 .

A triggering device 18 is also provided for the locking device 14, which is also integrated here in the housing 15 attached to the door lintel. In addition, a detection device 19 is provided in the housing 15, which detects, for example, depending on the position of a sliding block in the slide rail, whether the wing 12 is in the open position or not or whether the wing 12 is locked or not. A power supply and/or a smoke or heat detector can also be provided in the housing 15, for example.

The door 10 is designed as a fire or smoke protection door and is installed in a fire protection wall 20 . As shown, the fire protection wall 20 separates two rooms from one another and forms a fire barrier when closed.

Several actuating elements for the triggering device 18 are arranged in both rooms. For example, two ceiling detectors 22 are provided, which can be embodied as smoke or heat detectors, for example. In addition, two manual release buttons 24 are provided as an example.

The actuating elements 22, 24 can basically be connected to the triggering device 18 in different ways, ie in particular by cable or by radio. For example, it is assumed below that the actuating elements 22, 24 are all connected to the triggering device 18 by radio or generally wirelessly.

The triggering device 18 is arranged on a first side 26 of the wall 20 or the door 10 . The actuating elements 22.1 and 24.1 are also arranged on the same or first side 26 of the wall 20. The actuating elements 22.2 and 24.2, on the other hand, are arranged on a second side 28 of the door 10 or the wall 20.

If the door 10 or its wing 12 is partially or completely closed, i.e. if the wing 12 is not in its open position, a radio link between the triggering device 18 and the actuating elements 22.2 and 24.2 can be impaired, particularly if the wing 12 and/or or the wall 20 has a large proportion of metal and/or is very solid.

When the wing 12 is not in its open position, monitoring of the wireless connection between the triggering device 18 and the actuating devices 22.2 and 24.2 is suspended in order to avoid releasing the locking device 14 in this state. This is permissible and does not impair safety because the wing 12 is also outside of the unsafe state or in a safe state outside of its open position or fixed position. Because the door closer 16 is not blocked by the locking device 14 and brings the door leaf 12 into the closed position or holds the door leaf 12 in the closed position.

In this case, for example, the wireless connection to the actuating elements 22.1 and 24.1, which are also arranged on the first side 26, can continue to be monitored. An impairment of the connection is not to be expected here. However, it is also possible to suspend the monitoring of these connections when they are in a safe state.

It turns out that the invention easily circumvents the problem that a radio link can have stability problems through a solid fire protection wall 20 or fire protection door 10 . The fire safety is not affected.

In a known type of radio hold-open system, the connection to a ceiling detector or a manual release button can be on the opposite side a fire protection wall with the fire protection door closed. Then, in particular, the locking device is released. According to the invention, the triggering device monitors the connection in particular only when the fire or smoke protection door is in an unsafe state. The hold-open system according to the invention can also be operated wirelessly in a robust manner in the case of particularly thick fire protection walls and when the fire protection door is closed.

Reference List

10

fire door

12

wing

14

locking device

15

Housing

16

door closer

18

release device

19

recognition device

20

fire protection wall

22

Blanket avoider

24

manual release button

26

first page

28

second page

Claims (13)

1. Fixing system for a fire or smoke protection door (10) having a door closer (16), having a releasable fixing device (14) for fixing a leaf (12) of the door (10) in an open position, having a triggering device (18) for releasing the fixing device (14), and having an actuating element (22, 24) for the triggering device (18),

   wherein the triggering device (18) is wirelessly communicatively connected to the actuating element (22, 24) and is designed, upon actuation of the actuating element (22, 24), to release the fixing device (14), and

   wherein the triggering device (18) is designed for monitoring the connection to the actuating element (22, 24), which comprises the fixing device (14) being released when there is a disturbance or loss of the connection,

   characterized

   in that the fixing system comprises a detection device (19) for detecting whether the leaf (12) is fixed or not fixed and/or is in or outside an open position, and

   in that the triggering device (18) is connected to the detection device (19) and is designed to suspend the monitoring if the leaf (12) is not fixed and/or is not in the open position.
2. Fixing system according to Claim 1,
   characterized
   in that the triggering device (18) is designed to suspend the monitoring if the leaf (12) is in an only partially open position and/or is in a closed position.
3. Fixing system according to Claim 1 or 2, characterized
   in that the triggering device (18) is designed to carry out the monitoring only if the leaf (12) is fixed and/or is in the open position.
4. Fixing system according to at least one of the preceding claims,
   characterized
   in that the detection device (19) is designed to detect whether the leaf (12) is in a closed position.
5. Fixing system according to at least one of the preceding claims,
   characterized
   in that the detection device (19) is designed to detect whether the leaf (12) is fixed.
6. Fixing system according to at least one of the preceding claims,
   characterized
   in that the triggering device (18) and/or a radio module of the triggering device for the wireless connection to the actuating element (22, 24) is arranged on a first side (26) of the door (10) and/or the wall (20) in which the door (10) is provided, wherein the actuating element (22, 24) and/or a radio module of the actuating element is arranged on a second side (28) of the door (10) or the wall (20) .
7. Fixing system according to at least one of the preceding claims,
   characterized
   in that at least two actuating elements (22, 24) connected wirelessly to the triggering device (18) are provided, wherein the triggering device (18) is designed to suspend the monitoring for at least one connection if the leaf (12) is not fixed and/or is not in the open position.
8. Fixing system according to at least one of the preceding claims,
   characterized
   in that the actuating element is a manual trigger button (24).
9. Fixing system according to at least one of the preceding claims,
   characterized
   in that the actuating element is a smoke or heat detector (22).
10. Fixing system according to at least one of the preceding claims,
    characterized
    in that the actuating element is a ceiling or lintel detector.
11. Fixing system according to at least one of the preceding claims,
    characterized
    in that the fixing system comprises the door closer (16), wherein the fixing device (14) is coupled to the door closer (16).
12. Fixing system according to at least one of the preceding claims,
    characterized
    in that the triggering device (18) is designed to resume the monitoring if the leaf (12) is fixed and/or is set into the open position.
13. Arrangement comprising a fire protection door (20) and a fixing system according to one of the preceding claims.

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