EP3792437B1 - Method for power-assisted movement of a door and door actuator - Google Patents

Description

The present invention relates to a door operator of a door, in particular a fire and/or smoke protection door, and a method for power-assisted movement of a door. Door actuators for a fire and/or smoke protection door are known. EP 3 418 482 A1 discloses such a door operator.

Configurations of fire and/or smoke protection doors are also known which have a door actuator for detecting an open door during normal operation, ie outside of an emergency, fire and/or smoke situation. These fire and/or smoke protection doors are held in an open position by the door operator outside of a fire and/or smoke situation. Both configurations of fire and/or smoke protection doors must trigger a closing movement when a fire and/or smoke situation is detected by an emergency sensor device in order to enable the fire and/or smoke protection effect of the door. A disadvantage of known solutions for a door actuator of a fire and/or smoke control door is that a subsequent opening movement of the door after the closing movement of the fire and/or smoke control door is prevented, made more difficult or at least not made possible with power assistance. The opening of a fire and/or smoke protection door, which was closed due to a detected fire and/or smoke situation, by a disabled person, for example, is therefore not possible or can only be carried out with difficulty.

It is the object of the invention to at least partially eliminate the above-described disadvantages of a door operator of a door, in particular a fire and/or smoke protection door. In particular, the object of the invention is to provide a method for the power-assisted movement of a door and a door actuator in which safe operation and power-assisted movement of a door in an emergency are made possible in a particularly simple and cost-effective manner.

This object is achieved by a method having the features of independent claim 1. The object is also achieved by a door operator having the features of independent claim 15.

Further features and details of the invention result from the dependent claims, the description and the drawings. Features and details that are described in connection with the method according to the invention naturally also apply in connection with the door operator according to the invention and vice versa, so that the disclosure of the individual aspects of the invention is and/or can always be referred to reciprocally.

1. a) Empfang eines Alarmsignals durch die Signalempfangseinheit,
2. b) kraftunterstützte Öffnungsbewegung der Tür in die Öffnungsposition durch den Türbetätiger aufgrund eines Empfangs eines Öffnungssignals durch die Signalempfangseinheit,
3. c) kraftunterstützte Schließbewegung der Tür in die Schließposition, nach der kraftunterstützten Öffnungsbewegung durch den Türbetätiger.

According to a first aspect of the invention, the object is achieved by a method for power-assisted movement of a door, in particular a fire and/or smoke protection door, having a door actuator for power-assisted movement of the door between a closed position and an open position. The door operator has a signal receiving unit. The procedure is characterized by the following steps:

1. a) receipt of an alarm signal by the signal receiving unit,
2. b) power-assisted opening movement of the door into the open position by the door operator based on receipt of an opening signal by the signal receiving unit,
3. c) power-assisted closing movement of the door into the closed position after the power-assisted opening movement by the door operator.

According to the invention, the process steps are carried out in the order listed. A signal receiving unit is configured for data communication with an emergency sensor device and consequently receives signals corresponding to normal operation or an emergency situation. The signal receiving unit can enable wired or wireless data communication with the emergency sensor device. The signal receiving unit can be arranged on or in a housing of the rest of the door operator or at a distance from the housing. According to the invention, an alarm signal represents the detection of an emergency situation, for example a Fire and/or smoke protection situation. An alarm signal can consequently be understood as an automatic signal generated in particular by the emergency sensor device. The alarm signal can be a fire or smoke signal. The emergency sensor device can be designed as a fire alarm. The alarm signal can be a signal from an escape route system, for example an emergency button. The emergency sensor device can be designed as an escape route system or as an element of an escape route system, e.g. B. as an emergency button.

If, for example, a person, particularly a disabled or weak person, wants to go through the closed fire and/or smoke protection door, it is possible according to the invention for the door operator to carry out a power-assisted opening movement of the door into the open position. In this situation, the signal receiving unit receives an opening signal, which can be generated by different devices. Possible different devices for generating the opening signal are discussed in later sections of the application. Preferably, the user's intention to open the door is recognized by the opening signal. The user's will can e.g. B. be detected by a switch and / or automatically by a sensor device. The door operator carries out a power-assisted opening movement of the door into the open position based on the receipt of the opening signal by the signal receiving unit.

After a person has passed through the door, the fire and/or smoke protection effect of the door is to be restored according to the invention. For this purpose, the method according to the invention comprises, after the power-assisted opening movement of the door into the open position, a power-assisted closing movement of the door into the closed position by the door operator.

According to the invention, step c) always follows step b).

The door operator preferably includes an electronic controller. The electronic control may include a processor or controller. The Electronic control can include a non-volatile memory in particular. The electronic control switches to emergency mode when the alarm signal is received.

The electronic controller may remain in emergency mode until the door operator is restored to normal mode. In particular, a voluntary action by a user is necessary for resetting to normal operation.

The electronic control makes it possible in particular to carry out step b) and/or c). After receiving the opening signal, the electronic controller preferably causes the power-assisted opening movement to take place. In particular, the electronic control allows the power-assisted closing movement to take place in step c). The electronic control preferably prevents the power-assisted closing movement from being prevented in step c). The electronic controller can cause the power-assisted closing movement to take place in step c). Thus, advantageously according to the invention, the door can be opened in an emergency, in particular in emergency operation, with the aid of the door operator and can therefore be facilitated. After the door has been opened, fire protection is always provided by the door operator closing the door in an emergency, in particular in emergency operation.

The opening signal and/or the implementation of step b) does not result in emergency operation being exited.

The force support of the opening movement and/or the closing movement of the door can be designed in such a way that the door is opened and/or closed without further action. Likewise, the power assistance can generate only a proportion of the necessary force for the opening movement, so that a supporting action by the person passing is necessary for an opening movement. It is also possible to compensate for the force required to open the door manually by means of the power assistance. Power assistance is preferred for the Closing movement in step c) always designed such that the door is closed without manual intervention. As a result, fire protection can be guaranteed particularly well.

A door operator according to the invention preferably has an energy connection and/or an energy store, in particular an accumulator and/or an uninterruptible power supply (UPS). The door operator is preferably an automatic door drive, in particular a sliding door drive or a swing door drive. According to the invention, the door operator has a motor.

The door operator can include a position sensor for detecting the door position or can be connectable to the position sensor. The position sensor can be designed as a rotation angle sensor or as a magnetic or mechanical door closing sensor.

A method according to the invention is particularly advantageous since safe operation and the power-assisted movement of a door are made possible in a particularly simple and cost-effective manner. Thus, after an emergency situation has been identified, a power-assisted opening movement of the door, for example for the passage of an impaired person, is made possible in a particularly simple and cost-effective manner.

• Zeitdauer,
• Umgebungstemperatur,
• Luftqualität.

In a method according to the invention, it can preferably be provided that the power-assisted closing movement of the door into the closed position, after the power-assisted opening movement by the door operator, takes place on the basis of a defined parameter, the defined parameter for the power-assisted automatic closing movement of the door into the closed position affecting the door operator at least one of the following metrics:

• length of time
• ambient temperature,
• air quality.

A parameter differs from an alarm signal and/or opening signal by a prior definition of at least one, in particular person-independent, measured variable. For example, a parameter can include one of the aforementioned measurement variables and/or be a combination of these measurement variables. As a simple exemplary embodiment, the parameter can thus be a time duration. Thus, the method step according to the invention of the power-assisted closing movement of the door into the closed position is carried out after the power-assisted opening movement by the door operator after a predefined period of time. The predefined time period can be, for example, at most 2 minutes, preferably at most 1 minute, particularly preferably at most 40 seconds. The controller can include a timer to determine the length of time. A fire and/or smoke protection effect of the door can advantageously be made possible in this way using simple and inexpensive means, without the person passing having to take any action or exert any influence. A period of time starts, for example, with the power-assisted opening movement of the door.

A power-assisted closing movement of the door as a function of an ambient temperature and/or an air quality is also conceivable, with the measured variables being recorded by corresponding measured variable detection devices. For example, when a limit value of the measured variable is reached, a power-assisted closing movement of the door and/or a signal for the power-assisted closing movement of the door is generated.

The time period can be stored in the controller. The limit value can be stored in the controller.

In a method according to the invention, it can preferably be provided that the power-assisted closing movement of the door into the closed position, after the power-assisted opening movement by the door operator, always takes place after a defined period of time at the latest. The defined period of time is stored and/or can be defined in the electronic control. The electronic control advantageously automatically initiates the closing movement. In particular, independently of other influencing factors, an automatic closing movement of the door is always made possible after a defined period of time at the latest. For example, an automatic closing movement of the door is carried out, even if there is a fault in a component of the door and/or even if the opening signal is still present at the end of the defined period of time and/or another opening signal is present again.

For example, step c) can always be carried out after a predefined period of time. This means that other parameters, such as ambient temperature and/or air quality, are not taken into account. Alternatively, the power-assisted closing movement can also take place before the defined period of time. In particular, the shortening can take place as a result of an event. Information about the environment, in particular the temperature or the air quality, can lead to the shortening. Alternatively or additionally, recognition of a user's will can lead to the shortening.

• kraftunterstützte Schließbewegung der Tür nach einer definierten Zeitdauer, wobei durch den Empfang eines Schließsignals, insbesondere eines Temperatursignals und/oder eines Luftqualitätssignals, die definierte Zeitdauer durch die elektronische Steuerung verkürzt wird.

In a method according to the invention, it can preferably be provided that after the power-assisted opening movement of the door into the open position, the method further comprises:

• power-assisted closing movement of the door after a defined period of time, with the receipt of a closing signal, in particular a temperature signal and/or an air quality signal, shortening the defined period of time by the electronic control.

A power-assisted closing movement of the door can therefore take place immediately after receipt of the closing signal or after a defined period of time. The period of time is stored, for example, in the electronic control. Advantageously, the controller automatically shortens the defined period of time upon receipt of the closing signal. The closing signal can correspond to a temperature signal. Alternatively or additionally, the closing signal can be an air quality signal, e.g. B. correspond to a signal about a smoke content in the air.

The door operator may include a locking device. The locking device is for holding, i. H. designed to lock the door in the open position.

The locking device can be designed as an electromechanical latching element and/or as a motorized hold-open device, in particular with a motor force that works against a closing energy storage device designed as a spring. A door can be held in the open position by the locking device in normal operation, that is to say outside of an emergency situation, for example a detected fire and/or smoke situation. In other words, a door may be held in the open position by the hold-open device prior to receipt of an alarm signal and/or in the absence of an alarm signal. A closing movement of the door into the closed position is consequently blocked by the locking device.

However, in a recognized emergency situation, for example a fire and/or smoke situation, it is necessary to inhibit the locking in the open position in order to enable the fire and/or smoke protection effect of the door. Inhibiting the lock in the open position may include completely disabling the lock or only allowing the lock temporarily. The temporary enabling of the determination can preferably only be possible in order to leave the door in the open position for the predefined period of time after step b).

• Deaktivierung der Feststellung der Tür in der Öffnungsposition durch die Feststellvorrichtung aufgrund des Empfangs des Alarmsignals durch die Signalempfangseinheit,
• kraftunterstützte Schließbewegung der Tür in die Schließposition durch den Türbetätiger aufgrund eines Empfangs des Alarmsignals durch die Signalempfangseinheit.

In a method according to the invention, it can preferably be provided that and wherein the method comprises the following steps between steps a) and b):

• deactivation of the locking of the door in the open position by the locking device due to the receipt of the alarm signal by the signal receiving unit,
• power-assisted closing movement of the door into the closed position by the door operator on receipt of the alarm signal by the signal receiving unit.

If the door is in the open position when the alarm signal is received, both steps will take place. If the door is in the closed position when the alarm signal is received, the step of disabling the detection can take place while the step of power-assisted closing movement is omitted before receiving an opening signal, ie before step b).

The deactivation of the determination can include an adjustment of the electromechanical latching element. The electromechanical latching element preferably remains adjusted during emergency operation.

If the locking device is configured as a motorized hold-open force, the following options are conceivable: If the door is in the open position when the alarm signal is received, deactivating the lock can mean that the motorized hold-open force is reduced or switched off, in particular directly, so that the power-assisted closing movement takes place. After an opening movement according to step b), the motorized force to keep it open is reduced or switched off at the latest after the predefined period of time, so that the power-assisted closing movement takes place.

If the door is in the closed position when the alarm signal is received, the deactivation of the determination can mean that after an opening movement according to step b) at the latest after the predefined period of time, the motorized hold-open force is reduced or switched off, so that the power-assisted closing movement takes place.

A determination in the open position is preferably permanently inhibited after receiving the alarm signal and is not uninhibited again by any of the following method steps. The presence of emergency mode prevents disinhibition. A resetting of the inhibition and consequently an activation of the determination can of course be provided after the emergency situation has been resolved by qualified personnel and/or special tools be. The disinhibition can take place as part of the restoration of normal operations.

In a method according to the invention, it can preferably be provided that the door operator comprises at least one energy storage device, in particular a locking energy storage device and/or an opening energy storage device, for carrying out steps b) and/or c), the energy storage device for storing mechanical energy , In particular spring energy, and/or electrical energy is designed, in particular with method steps b) and/or c) being carried out without an external electrical energy supply, in particular mains energy supply. The functionality of the method and the door operator is important for the fire and/or smoke protection effect of the door, even if the energy supply fails. A locking energy storage device and/or the opening energy storage device, which is designed to store mechanical energy, in particular spring energy, and/or electrical energy, in particular in the form of an accumulator, advantageously allows the functionality of the method and the door actuator to be maintained even with failed power supply.

In a method according to the invention, it is provided that the power-assisted opening movement of the door takes place by means of a motor, in particular an electric motor, of the door operator. The power-assisted closing movement of the door is carried out by a closing energy storage device, in particular by a spring. Thus, the door is opened by a motor, while the door is closed mechanically.

In a method according to the invention, it is provided that during the power-assisted opening movement, the motor of the door operator compensates for the force of the spring of the closing energy storage device within a defined envelope. The envelope curve results from plotting the spring force over the opening time or the opening angle. The The envelope curve can deviate from the force of the spring by +/-30%, preferably +/-20%, particularly preferably +/-10%. Essentially, only the force that is necessary to compress the spring is applied by the power assistance of the door operator, in particular by the motor. The power support for the opening movement of the door can therefore be designed in such a way that the power support generates only a proportion of the force required for the opening movement, so that the person passing by needs to have a supporting effect for an opening movement (power assist function).

It is also possible to fully compensate for the force required to open the door manually using the power assistance. For this purpose in particular, it can be provided in a method according to the invention that the power-assisted opening movement of the door has a maximum kinetic energy of 1.69J. A door operator according to the invention is designed for operation in a low-energy mode according to EN16005 4.6.4.1 and 4.6.4.2.1 of 2013, so that a required energy consumption is not exceeded.

In a method according to the invention, provision can preferably be made for the door operator to have an opening signal generation device, with the opening signal for the power-assisted opening movement of the door into the open position being generated by the door operator from step b) by means of the door operator's opening signal generation device based on a user action.

The opening signal generating device can be embodied as a button for detecting the intention to open. When the user presses the button, the user's intention to open the door is recognized. A button according to the invention can be arranged on and/or next to the door.

The opening signal generating device can be embodied as a position sensor for detecting the door position. In particular is the Position sensor and / or the controller by means of the position sensor designed to recognize that a user is beginning to open the door. From this, the position sensor and/or the controller recognizes the user's desire to open the door. This means that a Push&Go function is possible after receiving the alarm signal.

The opening signal generating device can be designed as a mechanical handle. An actuation of the mechanical handle can be detected by a handle sensor. The user's intention to open the door is recognized by an actuation of the handle by the user and the recognition of the actuation of the handle by the handle sensor. The mechanical handle can be designed as a door handle or as a panic bar.

The door can also be designed to be pressure-sensitive and consequently an opening signal can be generated by pulling and/or pressing on the door.

In a method according to the invention, it can preferably be provided that the electronic control initiates the power-assisted opening movement, in particular as edge control, based on a change, in particular exclusively based on a change, in the opening signal of the opening signal generating device, with the electronic control in particular recognizing the change in the signal.

In particular when the opening signal generating device is designed as a position sensor, the following can be provided:
In a method according to the invention, it can preferably be provided that the door operator comprises a position sensor, wherein in a first mode of the door operator due to a change in the door position detected by the position sensor from the closed position, a power-assisted opening movement is omitted and in a second mode of the door operator due to a change in the door position detected by the position sensor a power-assisted opening movement is initiated from the closed position. It can thus be ruled out in the first mode that the door operator supports the opening movement when the start of an opening movement is detected. In the second mode, the opening movement is supported by the door operator when the start of an opening movement is detected. The two modes can be stored as computer program products in the storage in an executable manner.

It can be provided that, based on the receipt of the alarm signal in step a), there is a change from the first mode to the second mode. Switching between the first mode and the second mode can preferably take place automatically by the electronic control. A method according to the invention thus enables automatic activation of a Push&Go function when the alarm signal is received.

• Sperrung der Tür in der Schließposition durch die Sperrvorrichtung, insbesondere wobei die elektronische Steuerung des Türbetätigers nach Empfang des Öffnungssignals ein Signal an die Sperrvorrichtung zum Aufheben der Sperrung sendet.

In a method according to the invention, it can preferably be provided that the door operator has a blocking device for blocking the door in the closed position, the method further comprising after the closing movements:

• Locking of the door in the closed position by the locking device, in particular wherein the electronic control of the door operator sends a signal to the locking device to cancel the lock after receiving the opening signal.

Another safety aspect of the method according to the invention and/or the door operator according to the invention is an advantageous addition of a blocking device. A blocking device can enable the door to be blocked, in particular blocked, in the closed position. The locking device can, for. B. as a door opener, be designed as an electromagnetic or electromechanical locking device. A blockage can be designed in two passage directions or only in one passage direction of the door. Receiving the opening signal unlocks the door from being locked in the closed position.

In a method according to the invention, it can preferably be provided that the door operator has a sensor device for detecting people for a power-assisted movement of the door between the closed position and the open position, the detection signals of the sensor device being disregarded by the electronic control system due to the receipt of the alarm signal by the signal receiving unit remain. The detection signals of the sensor device are preferably not taken into account during the power-assisted opening movement in step b). Particularly preferably, after the alarm signal has been received by the signal receiving unit, the detection signals of the sensor device remain unconsidered by the electronic controller until the door operator is reset to normal mode. Here, disregarded z. B. that the sensor device sends the detection signals in emergency mode and the controller does not use the detection signals for control or that the sensor device does not send the detection signals in emergency mode. It is important that the detection signals of the sensor device have no influence on the behavior of the door operator in emergency operation. The sensor device can thus still be active, but the signals are no longer used or the sensor device is deactivated.

The door operator can have a sensor device for the movement of the door depending on the detection of people, in particular the movement of people towards the door and/or out of the area of the door. Corresponding sensor devices are known and widely used. For example, such a sensor device can be designed as a light barrier, camera, pressure-sensitive floor mat and/or radar sensor. In this case, people are recognized in particular in a contactless manner and, by means of the door actuator, automatically generates a power-assisted movement of the door in normal operation. For the fire and/or smoke protection effect of the door, deactivating the sensor device or not using the detection signals of the sensor device according to this embodiment is the Invention provided. This prevents unwanted opening movements of the door in an emergency situation.

A distinction can preferably be made between a sensor device and an opening signal generation device. In normal operation, a detection signal from the sensor device and an opening signal from the opening signal generating device can generally lead to a power-assisted opening movement of the door. In this case, detection signals or opening signals can also be excluded, so that the corresponding detection signals or opening signals do not cause a power-assisted opening movement of the door, for example in the first mode.

In emergency operation, on the other hand, only the opening signal from an opening signal generating device leads to a power-assisted opening movement of the door. In contrast, the detection signals of the sensor device do not lead to a power-assisted opening movement of the door in emergency operation.

The sensor device differs from the opening signal generation device in that the sensor device recognizes the position of a person and automatically triggers the power-assisted opening movement based on the position. This also applies in particular if the person is in the vicinity of the door but has no user will to open the door. The opening signal generating device, on the other hand, recognizes a user's intention to open the door. In particular, a gesture is recognized for this purpose. In particular, the gesture can be performed with one hand of the person and/or can include an actuation. The actuation can include the actuation of the button, the actuation of the handle and/or the actuation of the door.

• Ausgabe wenigstens eines Fehlerzustandes des Türbetätigers, insbesondere eines andauernden Öffnungssignals der Öffnungssignalerzeugungsvorrichtung.

In a method according to the invention, it can preferably be provided that the door operator has an output unit, the method further comprising:

• Output of at least one error status of the door operator, in particular a continuous opening signal from the opening signal generating device.

An error condition is represented, for example, by a type of lighting and/or forwarded to a control center via a bus. The error status can be displayed on the opening signal generating device, in particular on the button. In addition or as an alternative, it is advantageous if the door operator enables an output of the error status. An output about the error status can be visual and/or acoustic. The error state can advantageously be inferred from the received signals, in particular from the receipt and/or non-reception of the alarm signal. The error state is z. B. when an emergency operation of the door operator and at the same time a continuous opening signal of the opening signal generating device is present.

A method designed in this way is advantageous since a person who wants to pass through the door is informed via an output unit about a state and consequently about the functioning of the door in this state. A more intuitive use of the door is thus made possible and valuable time is saved, for example in an emergency situation.

In a method according to the invention, it can preferably be provided that the alarm signal for the power-assisted closing movement of the door into the closed position by the door operator using the closing energy storage device is an emergency signal, in particular a fire signal. A method according to the invention can be applied particularly advantageously for use with a fire and/or smoke protection door and consequently an alarm signal for the power-assisted closing movement of the door is an emergency signal, in particular a fire and/or smoke signal. Such a signal can known emergency sensor device, such as fire and / or smoke detectors are generated.

In a method according to the invention, it can preferably be provided that the opening signal corresponds to a first opening signal, in particular the opening signal in step b). Due to a second opening signal, which is generated after the first opening signal, a power-assisted opening movement is only possible from the closed position, with the electronic control in particular recognizing the closed position on the basis of the position sensor. A further opening signal is therefore not permitted to extend the predefined period of time. Rather, the door must first assume the closed position again before the door can again perform a power-assisted opening movement by means of the door operator. A further power-assisted opening movement can be carried out with the aforementioned conditions and circumstances of a first opening movement.

According to a second aspect of the invention, the object is achieved by a door operator for power-assisted movement of the door between a closed position and an open position. The door operator has a signal receiving unit, the door operator being designed to carry out the method according to the first aspect. All advantages that have been described in detail in relation to the method according to the invention according to the first aspect of the invention can thus also be provided by a door operator according to the second aspect of the invention. A door actuator configured in this way is particularly advantageous because safe operation and the power-assisted movement of a door, in particular after an initial closing movement of the door, are made possible in a particularly simple and cost-effective manner. Thus, even after a closing movement of the door due to a detected emergency situation, a power-assisted opening movement of the door, for example for the passage of an impaired person, is made possible in a particularly simple and cost-effective manner.

Furthermore, in one embodiment of the door operator according to the invention, it can be provided that the door operator has a sensor device for detecting people for a power-assisted movement of the door between the closed position and the open position, a locking device for locking the door and/or an opening signal generating device. The devices and how they work have already been described in the previous sections on the method according to the invention, together with their advantages. A door operator according to the invention with these devices also provides the same advantages, so that reference is made to the previous sections at this point.

In addition, a door operator according to the invention can be designed in such a way that the closing energy storage device and/or the opening energy storage device each have at least one energy storage device for mechanical energy, in particular spring energy, and/or electrical energy, in particular due to the at least one energy storage device in each case being the embodiment the process steps are designed to be executable by the door operator without an electrical energy supply. The devices and how they work have already been described in the previous sections on the method according to the invention, together with their advantages. A door operator according to the invention with these devices also provides the same advantages, so that reference is made to the previous sections at this point.

A method according to the invention and a door actuator according to the invention are explained in more detail below with reference to drawings.

Fig. 1

einen erfindungsgemäßen Türbetätiger an einer Tür in der Schließposition,

Fig. 2

ein erfindungsgemäßes Verfahren zur kraftunterstützten Bewegung einer Tür aufweisend einen Türbetätiger.

Elements with the same function and effect are provided with the same reference symbols in the drawings. They each show schematically:

1

a door operator according to the invention on a door in the closed position,

2

an inventive method for power-assisted movement of a door having a door operator.

1 shows a schematic view of an embodiment of a door operator 10 according to the invention. The door operator 10 has a locking energy storage device 30 and an opening energy storage device 32 . The closing energy storage device 30 is designed for a force-assisted closing movement of the door 100 into the closed position SP. The opening energy storage device 32 is configured for a power-assisted opening movement of the door 100 into the open position OP (not shown). The closing energy storage device 30 can be blocked by a locking device 12 against a closing movement of the door 100 into the closed position SP. The door operator 10 is designed as an automatic door drive with an electric motor. The closing energy storage device 30 is designed as a spring. The opening energy storage device 32, if present, is in the form of a battery or rechargeable battery. Alternatively, a connection to the UPS can be provided.

Furthermore, the door operator 10 has a signal receiving unit 20 for receiving signals 22 , 24 , 26 . The signal receiving unit 20 is designed as one or more inputs of an electronic controller 80 of the door operator 10 .

The electric motor, the spring 30, the controller 80, the signal receiving unit 20 are housed in a common housing.

When a person wants to pass through the door 100 in the closed position SP, an opening signal 24 (not shown) can be generated and consequently a power-assisted opening movement of the door 100 to the open position OP (not shown) by the door operator 10 upon receipt of a

Allow opening signal 24 by the signal receiving unit 20. After the person has passed through the door 100, a power-assisted closing movement of the door 100 into the closed position SP takes place through the door operator 10, by means of the closing energy storage device 30 based on a defined parameter 28 (not shown).

According to the invention, when an emergency situation is detected, in the form of the receipt of an alarm signal 22 (not shown), it is still possible to open the door, which is carried out or at least supported by the door operator 10 . This also enables weak or disabled people to leave the danger area. The receipt of the alarm signal causes the controller 80 to change from a normal operation to an emergency operation. After the door has been opened, the closing energy storage device 30 in the form of the spring causes another closing movement in emergency operation at the latest after a predefined period of time. The predefined period of time is stored in the memory.

The controller 80 causes the motor to open the door 100 to be activated only on the basis of a change in the opening signal. A persistent opening signal therefore does not result in the motor being activated again to open the door 100 and/or in the motor being activated to keep the door 100 open .

The predefined duration of opening in emergency mode cannot be exceeded. For example, a second opening signal does not extend the predefined time period. In contrast, the predefined period of time is shortened if the controller 80 receives a signal about the temperature of the room, the door 100, the wall and/or the door operator 10 via the signal receiving unit 20, with the temperature exceeding a limit value.

By way of example, the door operator 10 is configured with a blocking device 50 in order to fix the door 100 in the closed position SP.

A sensor device 40 is arranged on the frame of the door and is designed to detect persons and to enable the door 100 to be opened by means of the door operator 10 in normal operation. The sensor device 40 detects a position of a person.

An opening signal generating device 60 enables the door to be opened both in normal operation and in emergency operation. The opening signal generation device 60 recognizes a user's intention to open the door and generates an opening signal. To do this, the user must perform an operation. The actuation can be in the form of an actuation of a button designed as an opening signal generating device 60 . The actuation can be embodied as an actuation of the door to open the door, with a position sensor embodied as an opening signal generating device 60 recognizing the opening attempt.

In normal operation, the door is opened by the door operator 10 in response to a signal from the sensor device 40 . This is excluded in emergency operation. For example, a detection of the sensor device 40 is deactivated. On the other hand, in response to an opening signal from the opening signal generating device 60 in emergency operation and possibly also in normal operation, the door operator 10 opens the door.

It may be the case that an opening signal generated by the position sensor as the opening signal generating device 60 does not result in the door being opened by means of the door operator 10 during normal operation. Rather, the controller is in a first mode that prevents this. However, when switching to emergency operation, the controller automatically switches to a second mode in which an opening signal generated by the position sensor as the opening signal generating device 60 leads to the door being opened by means of the door operator 10 .

Opening the door by means of the door operator 10 can mean that the door operator 10 applies all or a large proportion of the opening force raises. The user therefore does not have to support the door opening at all or only slightly. The power-assisted opening movement of the door has a maximum kinetic energy of 1.69 J.

Alternatively, the motor of the door operator 10 can essentially only compensate for the energy of the spring 30 . In this case, the user must otherwise open the door 100 himself. Thus, the motor applies a force that substantially corresponds to the force of the spring 30. The motor force is in an envelope around the spring force when the spring force is plotted against the opening time or the opening angle.

The door 100 can only be closed by means of the spring 30 .

If the door 100 is in the open position during the transition to emergency operation and the door is fixed there, i.e. the closing movement is blocked, the door 100 is prevented from being fixed in the open position during the transition to emergency operation, as is a power-assisted closing movement of the door 100 into the closed position SP by the door operator 10 by means of the closing energy storage device 30 allows. It is not possible to fix the door again in the open position beyond the predefined period of time. During emergency operation, the inhibition remains.

In addition, the door operator 10 has an output unit 70 in order to enable an output of the error status of the door operator 10 and/or the opening signal generating device 60 . A door operator 10 designed in this way is advantageous because a person who wants to pass through the door 100 is informed via an output unit 70 about a state and consequently about the functioning of the door operator 10 in this error state. A more intuitive use of the door 100 and the door operator 10 is thus made possible and valuable time is saved, for example in an emergency situation.

Fig.2 shows a method according to the invention for power-assisted movement of a door 100 having a door operator 10. When an emergency situation is detected, for example by an emergency sensor device 120, the signal receiving unit 20 of the door operator 10 receives an alarm signal 22. The receipt of the alarm signal 22 causes a power-assisted closing movement of the door 100 (not shown) into the closed position SP (not shown) by the door operator 10 by means of the closing energy storage device 30. For the passage of a person through the door 100 (not shown), an opening signal 24 can be generated, for example, by means of an opening signal generating device 60 and thus a enable power-assisted opening movement of the door 100 (not shown) to the open position OP (not shown) by the door operator 10 by means of the opening energy storage device 32 or the UPS upon receipt of the opening signal 24 by the signal receiving unit 20. A power-assisted closing movement of the door 100 into the closed position SP (not shown) is then carried out by the door operator 10, by means of the closing energy storage device 30 based on a defined parameter 28. It is also possible to generate a closing signal 26 by actuating the opening signal generating device 60, so that by means of the Closing energy storage device 30 of the door operator 10 allows the door 100 (not shown) to close as early as possible.

Reference List

10

door operator

12

locking device

20

signal receiving unit

22

alarm signal

24

opening signal

26

closing signal

28

parameter

30

closing energy storage device

32

opening energy storage device

40

sensor device

50

locking device

60

opening signal generating device

70

output unit

80

electronic control

90

position sensor

100

door

120

emergency sensor device

OP

opening position

SP

closed position

Claims (15)

1. A method for power-assisted movement of a door (100) having a door actuator (10) for power-assisted movement of the door (100) between a closed position (SP) and an open position (OP), the door actuator (10) having a signal receiving unit (20) and an electronic controller (80), wherein a power-assisted opening movement of the door (100) is carried out by means of a motor, in particular an electric motor, of the door actuator (10) and wherein the power-assisted closing movement of the door (100) is carried out by a closing energy storage device (30), in particular by a spring, and wherein the method is characterized by the following steps, which are carried out in the order listed:

   a) receipt of an alarm signal (22) by the signal receiving unit (20) and causing the electronic controller (80) to switch from normal operation to emergency operation,

   b) power-assisted opening movement of the door (100) into the open position (OP) by the door actuator (10) based on receipt of an opening signal (24) by the signal receiving unit (20), wherein, during the power-assisted opening movement, a motor of the door actuator (10) within a defined envelope curve compensates for the force of the spring of the closing energy storage device (30), wherein the envelope curve results from application of the force of the spring over the opening time or the opening angle, in particular wherein the envelope curve deviates by +/- 30%, preferably by +/-20%, particularly preferably by +/-10% from the force of the spring, and

   c) power-assisted closing movement of the door (100) into the closed position (SP) after the power-assisted opening movement by the door actuator (10).
2. The method according to claim 1,
   characterized
   in that the power-assisted closing movement of the door (100) into the closed position (SP) takes place after the power-assisted opening movement by the door actuator (10) based on a defined parameter (28), wherein the defined parameter (28) for the power-assisted automatic closing movement of the door (100) into the closed position (SP) by the door actuator (10) comprises at least one of the following measured variables:

   - duration,

   - ambient temperature,

   - air quality.
3. The method according to one of the preceding claims, characterized
   in that the power-assisted closing movement of the door (100) into the closed position (SP) after the power-assisted opening movement by the door actuator (10) always takes place after a defined duration at the latest.
4. The method according to one of the preceding claims, characterized
   in that after the power-assisted opening movement of the door (100) into the open position (OP), the method further comprises:

   - power-assisted closing movement of the door (100) after a defined duration, wherein due to the receipt of a closing signal (26), in particular a temperature signal and/or an air quality signal, the defined duration is shortened by the electronic controller (80).
5. The method according to one of the preceding claims, characterized
   in that the door actuator (10) comprises a hold-open device (12), wherein the hold-open device (12) is designed to hold open the door (100) in the open position (OP) and wherein the method comprises the following steps between steps a) and b):

   - deactivating the door (100) being held open by the hold-open device (12) based on the receipt of the alarm signal (22) by the signal receiving unit (20),

   - power-assisted closing movement of the door (100) into the closed position (SP) by the door actuator (10) based on receipt of the alarm signal (22) by the signal receiving unit (20).
6. The method according to one of the preceding claims, characterized in that the door actuator (10) comprises at least one energy storage device (30, 32), in particular a closing energy storage device (30) and/or an opening energy storage device (32), for carrying out steps b) and/or c), wherein the energy storage device (30, 32) is designed to store mechanical energy, in particular spring energy, and/or electrical energy, in particular wherein the method steps b) and/or c) are carried out without an external electrical energy supply, in particular mains energy supply.
7. The method according to one of the preceding claims, characterized
   in that the power-assisted opening movement of the door (100) has a kinetic energy of maximum 1.69 J.
8. The method according to one of the preceding claims, characterized
   in that the door actuator (10) has an opening signal generating device (60), wherein the opening signal (24) for the power-assisted opening movement of the door (100) into the open position (OP) by the door actuator (10) from step b) is generated by means of the opening signal generating device (60) of the door actuator (10) on the basis of a user action, wherein the opening signal generating device (60) is designed as a button for detecting the intention to open and/or as a position sensor (90) for detecting the door position and/or a mechanical handle.
9. The method according to one of the preceding claims, characterized in that the electronic controller (80) initiates the power-assisted opening movement based on a change in the opening signal (24) of the opening signal generating device (60), wherein the electronic controller (80) in particular detects the change in the signal.
10. The method according to one of the preceding claims, characterized in that the door actuator (10) comprises a position sensor (90), wherein, in a first mode of the door actuator (10) based on a change in the door position detected by the position sensor (90) from the closed position (SP), a power-assisted opening movement is omitted and, in a second mode of the door actuator (10) based on a change in the door position detected by the position sensor (90) from the closed position (SP), a power-assisted opening movement is initiated, wherein, based on the receipt of the alarm signal (22) in step a), a change takes place from the first mode to the second mode.
11. The method according to one of the preceding claims, characterized
    in that the door actuator (10) has a locking device (50) for locking the door (100) in the closed position (SP), wherein, after the closing movements, the method further comprises:

    - locking of the door (100) in the closed position (SP) by the locking device (50), in particular wherein the electronic controller (80) of the door actuator (10), after receiving the opening signal (24), sends a signal to the locking device (50) to cancel the locking.
12. The method according to one of the preceding claims, characterized
    in that the door actuator (10) has a sensor device (40) for detecting people for a power-assisted movement of the door (100) between the closed position (SP) and the open position (OP), wherein the detection signals of the sensor device (40) due to the receipt of the alarm signal (22) by the signal receiving unit (20) remain disregarded by the electronic controller (80), in particular in that the detection signals of the sensor device (40) remain disregarded during the power-assisted opening movement in step b).
13. The method according to one of the preceding claims, characterized
    in that the door actuator (10) has an output unit (70), wherein the method further comprises:

    - outputting at least one error status of the door actuator (10), in particular a continuous opening signal (24) of the opening signal generating device (60).
14. The method according to one of the preceding claims, characterized in that the opening signal (24) corresponds to a first opening signal, wherein a power-assisted opening movement is possible only from the closed position (SP) based on a second opening signal which is generated after the first opening signal (24), wherein in particular, the electronic controller (80) detects the closed position (SP) based on the position sensor (90).
15. A door actuator (10) for a power-assisted movement of the door (100) between a closed position (SP) and an open position (OP), the door actuator (10) having a signal receiving unit (20), an electronic controller (80), a motor, in particular an electric motor, and a closing energy storage device (30), in particular a spring, characterized
    in that the door actuator (10) is designed to carry out the method according to one of the preceding claims 1 to 14.

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