EP2711053A1 - Triggering device for an extinguishing agent container - Google Patents

Abstract

The trigger device (6) has a housing (7), a tensioning device (16) that is fixed on a spring-loaded piston (10), a spring (14), and a release device (40). A trigger piston (8) is movably arranged in the standby state in the housing in the axial direction. The trigger piston is designed such that the spring is relaxed in the release condition by the release device and spring-loaded piston transmits the released force to the trigger piston that exerts force on an actuating element (31) and releases extinguishing agent in extinguishing agent container (2).

Description

The invention relates to a triggering device for an extinguishing agent container according to the features of the first claim.

The invention is applicable wherever it is necessary to release an extinguishing agent from an extinguishing agent container in the event of a fire via a triggering device. The extinguishing agent containers can be designed both as pressurized containers, as well as containers, which are first acted upon by the triggering device with pressure. This can be done for example via the electrical ignition of an aerosol or gas generator inside the container, on the pressure build-up in the container then the extinguishing agent is released. All known extinguishing media can be used as extinguishing media, such as fluid media, eg water, chemical extinguishing agents and foaming extinguishing agents, all extinguishing gases such as nitrogen, argon, CO ₂ , extinguishing gas mixtures and other extinguishing media such as powder extinguishing agents and aerosol extinguishing agents.

Trigger devices for an extinguishing agent container are known from the prior art. The DE 20 2011 104 314 U1 describes a triggering device for a fire extinguishing system, with a carriage which is biased linearly adjustable relative to a stationary component of the triggering device or the fire extinguishing system. A temperature-sensitive trigger element keeps the linearly adjustable slide on bias and the temperature-sensitive trigger element releases the bias in case of fire, whereby the slide for the release of the fire extinguishing system is linearly displaced and releases the extinguishing agent.

From the DE 24 25 835 A1 a valve with a release device is known, which contains a destructible by ambient heat trigger element and at elevated temperature or electrical release releases the closure body of the valve for fire extinguishing agent. Also electrically controllable solenoid valves to release extinguishing agent are well known.

Although the known from the prior art devices for releasing extinguishing agent are basically suitable to release an extinguishing agent, but they do not allow independent manual release and release of the extinguishing agent with the same device. Another disadvantage is that with the known triggering devices no additional circuit of mechanical actuators, e.g. is possible for switching off the power supply of the burning or the vulnerable object. All these known solutions have a further disadvantage in common, there is no condition monitoring of the trip unit, whether this triggered and an extinguishing agent was released and there is no retransmission of this condition monitoring to a remote location such as a control center or control center. The elimination of these disadvantages means that additional devices must be installed and maintained which is correspondingly costly.

It is therefore an object of the invention to provide a triggering device for an extinguishing agent container, which is inexpensive and simple and compact and in addition to the automatic stimulation of the triggering device by a temperature-sensitive triggering element or other responsive to fire characteristics devices, also allows manual actuation of the triggering device. Furthermore, the problem to be solved, to be able to make an emergency shutdown with the triggering device simultaneously with the extinguishing agent release, such. the shutdown of the energy supply of the burning or endangered object.

The invention is defined and characterized in the main claim, while the dependent claims describe further features of the invention.

The object is achieved by a triggering device for an extinguishing agent container, which consists of a housing for the triggering device, a spring tensioning piston on which a tensioning device is mounted, a spring, a release device and a release piston, which is arranged in the standby state in the housing in the axial direction movable regardless of the fixation and preload of the spring tensioning piston with the tensioning device. The release piston is set up and designed so that it exerts a force on an actuating element in the release state and thus releases an extinguishing agent from the extinguishing agent container.

The action of the release piston on the actuator is made possible by the arrangement of the spring tension piston and the release piston in the guide bush in the housing and by the free linear movement of the release piston in the axial direction of the guide bush, in the direction of the actuating element, regardless of the fixation of the spring tension piston. In the release state, the spring is relaxed by the release device, the spring tension piston moves in the axial direction in the guide bush towards the trigger piston and the spring tension piston transmits the released force on the release piston, which moves to the actuator and the actuator exerts a force and the extinguishing agent releases from the extinguishing agent container.

At rest, which is a condition in which there is no fire event, the tensioning device biases the spring. It generates with the, between the spring tension piston and a spring fixing device arranged spring, a bias of the spring tension piston. The tensioning device is connected in the idle state with a release device and generates the necessary force for biasing the spring tensioning piston. As a spring, a compression spring is preferably used. However, other types of springs such as disc springs or torsion springs can be used in other embodiments, but also a device with spring action, such as. with a hydraulic force caused by a pressurized fluid. It is crucial that the spring exerts a biasing force on the spring tension piston, which allows a linear movement of the spring tensioning piston in the axial direction of the guide sleeve with respect to the fixed housing in the triggering state and the spring tension piston sufficient force on the release piston for acting on the actuating element for release of the extinguishing agent transfers.

In an advantageous embodiment, the spring is designed so that the force transmitted to the release piston is 200 N. In other advantageous embodiments, the spring is designed so that the force transmitted to the release piston is in the range of 10 N to 1000 N.

The spring fixing device is in a preferred embodiment, the housing wall, which is the limit of the guide bush against which the spring acts when tension. It may be formed with the housing as a part or be designed mountable or removable. In this preferred embodiment, the spring between the spring tension piston and this housing wall is arranged. By arranging the spring on the housing wall, all arrangements are to be understood, the other elements, such as. Spacer between the spring and the housing wall included.

At the opposite end of the guide bush it is open, so that the release piston can move through this opening in the direction of actuator. In further embodiments, the spring fixing device may be formed as a projection on the inner wall of the spring guide bushing or as suitable devices which is fixed locally with respect to the housing and absorbs the spring tension force when the spring and the spring tensioning piston are tensioned by the tensioning device.

The triggering condition is caused by a fire. By a temperature-sensitive trigger element or a fire detector, which may be a smoke detector, a heat detector, a fire gas detector, a flame detector, a Rauchansaugsystem or another detector or sensor, the release device releases the connection with the tensioning device and the bias of the spring tension piston is released. As a result, the biasing force is transmitted to the release piston, the release piston is accelerated from its resting position in the guide book and moves in the direction of the actuating element. The caused by the acceleration of the release piston force now acts on the actuator and releases the extinguishing agent. In a preferred embodiment, the triggering device and the actuating element are arranged and configured such that the movement of the triggering piston is stopped upon reaching the actuating element, which enables an optimal power transmission to the actuating device.

Preferably, the tripping device according to the invention is used on extinguishing agent containers which are pressurized and in which the actuating element is a rocker arm on a rocker arm valve. The biasing force of the spring tensioning piston and thus the force of the release piston is designed so that in the release state of the release piston actuates the rocker arm on Kipphebelventil, the toggle valve opens the extinguishing agent tank and the extinguishing agent is released.

In another embodiment, the extinguishing agent container triggering device according to the invention is used for switching an actuating element in the execution of a trigger button for the electrical ignition or triggering of an aerosol or gas generator. In this case, the extinguishing agent container includes an aerosol or a gas generator which is electrically ignited. In the release state, the trigger button for the electrical ignition or the triggering of the corresponding generator is actuated with the force of the release piston, the pressure built up in the extinguishing container and the extinguishing agent in the form of aerosols or extinguishing gases or an aerosol-extinguishing gas mixture released.

The embodiments of the actuation element as a rocker arm or release button do not constitute a restriction. All actuation means can be used which can be switched via the force action of the release piston and, as a consequence, an extinguishing agent is released.

In a further advantageous embodiment of the invention, a first traction device is arranged on the release piston or on a driver associated with this trigger piston, which is connected to a mechanical actuator. Here, the housing of the triggering device is provided with a guide opening. The driver and the guide opening are dimensioned so that the driver protrudes through the guide opening and through the fixed connection with the release piston performs the same linear movement as the release piston in the case of release. The guide opening also serves as a stop for the driver in the triggering state. In an advantageous embodiment, the fixed connection with the release piston is a screw connection. For this purpose, the driver is screwed into the release piston. At the driver a first traction device is attached. In a preferred embodiment, this pulling device is a cable pull. But other suitable pulling devices such as rods are usable. In the firing state, the biasing force of the spring tension piston transmitted to the firing piston produces a tensile force rectified by the force of the firing piston which actuates the mechanical actuator to shut off the power to the burning or vulnerable object.

In an alternative embodiment, the first pulling device is connected to the release piston. It then passes through the spring tension piston within the housing, without affecting the bias of the spring tension piston and their release. This pulling device is guided through an opening in the housing and ends at the mechanical actuator for an emergency shutdown.

A further advantageous embodiment of the invention is characterized in that a manual release element is arranged on the release piston or on the driver. The manual release element is used for manual actuation of the triggering device. Preferably, this is an element that is graspable with a hand or fingers, such as a ring or handle.
In a further advantageous embodiment, the manual release element is not attached directly to the driver, but via a second pulling device on the driver.

In a further advantageous embodiment, holders which are fastened to the housing are used to guide the first and / or the second pulling device. In the holder guide openings are arranged, which allow unhindered, guided linear movement of the pulling device in the axial direction of the housing. The housing may be formed, for example, as a casting. Suitable cast materials such as steel, cast iron, non-ferrous metals or other alloys as well as plastics can be used. In a further advantageous embodiment, the housing and these holders are a uniform casting. The brackets are provided with through holes for attachment of the traction devices, such as cables, Bowden cables, rods, pipes and other traction devices.

Since the release piston in the guide book of the housing in the axial direction, in the direction of the actuating element for the release of the extinguishing agent, is linearly freely movable, regardless of the fixation of the spring tension piston by the biasing force of the spring, can manually in the idle state on the manual release a tensile force in the axial Direction of the housing, in the direction of the actuating element for the release of the extinguishing agent, exercised and thus switched this actuator and the extinguishing agent are released. In the embodiment with the first pulling device attached to the release piston or the driver for actuating mechanical actuation elements for emergency shutdowns, this manual actuation of the triggering device additionally leads to an emergency shutdown.

The triggering device according to the invention for an extinguishing agent container is thus characterized by the fact that it can also perform an emergency shutdown in the release state in addition to the release of the extinguishing agent.

A further advantageous embodiment of the invention is characterized in that the release device is a thermal isolator and the tensioning device and / or the pulling device is designed as a cable.

In this case, the cable, which is connected at one end to the spring tension piston, the spring tension piston and the spring under tension by the cable at the other end with a stationary part, such as a wall or a stationary mechanical device is fixedly connected and thus the Preload force generated. The cable contains a thermal isolator as a temperature-sensitive triggering element, such as a fusible link or a glass ampoule which is known as a triggering element of the sprinkler technology. If a predefined temperature is exceeded in case of fire, the thermal isolator will be destroyed or it will change its structure. It can melt, shrink or soften. It can also change its state of aggregation or its spatial dimensions. In this case, the thermal isolator is made of a material which changes in temperature, in at least one spatial direction in its length, ie, expands. It is advantageous if the thermal isolator a Schmelzlot, or a liquid-filled glass ampoule such as in sprinklers, a plastic element or a metal rod or a pyrotechnic element represents. When a predefined temperature is exceeded, the bias of the tensioning device and the spring tensioning piston is canceled in case of fire by the thermal isolator. As a result, the spring tension piston moves in the direction of the release piston and transmits the biasing force on this.

In a further advantageous embodiment of the invention, the release device is designed as an electrically deactivatable permanent magnet. In this case, the permanent magnet is deactivated in the tripping state by an electrical signal. Deactivation is understood to mean the cancellation of the magnetic field of the permanent magnet or its weakening, so that parts adhering to the permanent magnet are released. The electrically deactivatable permanent magnet is advantageously connected to a fixed part, e.g. a wall or a fixed mechanical device, such as the housing of the trigger device connected.

The tensioning device is connected to a magnetic holding element and this magnetic holding element, e.g. a magnetizable or magnetic disk or another magnetizable or magnetic element, adheres in the idle state to the electrically deactivatable permanent magnet. The magnetic field and the adhesion are designed so that the spring tensioning piston and the spring are prestressed in this way. In the trip condition, the application of a voltage, a voltage pulse or a voltage signal to e.g. a coil reaches the demagnetization or attenuation of the magnetic field of the electrically deactivatable permanent magnet. The liability of the clamping device on the electrically deactivatable permanent magnet and thus the bias of the tensioning device and the spring tension piston are canceled. As a result, the spring tension piston moves in the direction of the release piston and transmits the biasing force on this. The release piston acts on the actuator and releases the extinguishing agent.

It can also be advantageous that the electrically deactivatable permanent magnet is connected by means of cable or wirelessly via a transmitting and / or receiving device with a fire alarm, a sensor or a control center. In advantageous embodiments, the control center, for example, a fire alarm panel, a fire alarm and extinguishing control center, a delete control center or a control center.

For monitoring the triggering device for an extinguishing agent container is in a further advantageous embodiment, on the triggering device, in a preferred manner on the housing, a switch and the pull device, a switch triggering element arranged. In the release state, the release piston and the pulling device attached to it, or to a driver, make a linear movement. This linear movement and / or the force of the trigger piston transmitted to the pulling device causes the switch triggering element to actuate the switch. The switch is used to visually and / or acoustically display the triggering state and / or to forward it to a remote location. The switch trigger element and the switch may be based on a mechanical, a magnetic or an optical switching effect. In a preferred embodiment, the switch triggering element is a permanent magnet and the switch is a reed switch.

In the triggering state, the switch is actuated and an optical display and / or optical and / or acoustic alarm means are activated or further switching operations are initiated. For this purpose, it is advantageous that the switch is connected via a cable or wirelessly via a transmitting and / or receiving device to a control center.

In a further advantageous embodiment of the invention, a cylinder with piston and piston rod and a pneumatic control line are arranged on the triggering device, for example on the housing, wherein the cylinder is provided with a vent and the piston is connected to the piston rod with a second pulling device. This traction device is connected to a mechanical actuator and can perform switching operations in the tripping state. This can be other emergency circuits or activations of system components that can be actuated by a compressive or tensile force. The control line is in fluid communication with the extinguishing line, in which the extinguishing agent of the extinguishing agent container is released. In the triggering state, the triggering device releases the extinguishing agent, in this embodiment a pressurized extinguishing gas. This pressurized extinguishing gas passes in the bypass via the control line from the extinguishing line into the cylinder and moves the piston and the piston rod with the attached thereto second pulling device in the axial direction of the cylinder. In a preferred embodiment, this second pulling device can be a cable pull which switches the mechanical actuating device in the released state.

In a particularly preferred application, the tripping device according to the invention is used for the triggering of extinguishing systems, which serve the protection of fat-heating devices. Here, the release piston acts on an actuating element in the form of a rocker arm on a rocker arm valve on a pressurized extinguishing agent container, actuates this rocker arm and thus opens the extinguishing agent container and releases the extinguishing agent.

The advantage of the solution according to the invention consists in the compact, cost-effective and low-maintenance design of the triggering device and in the optional possibility to make a manual release and at the same time carry out emergency shutdowns with this triggering device.

These embodiments and the advantageous embodiments and applications are not limiting. The trigger device according to the invention for extinguishing agent container can be used wherever a mechanical switching operation is performed with the force of the release piston generated in the triggering state to the extinguishing agent from the extinguishing agent container via extinguishing agent lines and / or Release nozzles to extinguish the fire.

These and other features of the invention will be described by way of example with reference to the accompanying drawings for a preferred and further embodiments.

Fig. 1:

eine schematische Darstellung der Auslösevorrichtung an der Halterung eines Kipphebelventils auf einem Löschmittelbehälter,

Fig. 2:

eine schematische Darstellung der Auslösevorrichtung mit einem zusätzlichen Handauslöseelement,

Fig. 3:

die Auslösevorrichtung an der Halterung eines Kipphebelventils auf einem Löschmittelbehälter in schematischer Darstellung mit einem elektrisch entmagnetisierbaren Permanentmagneten und einer Steuerzentrale,

Fig. 4:

eine schematische Darstellung der Freigabevorrichtung für den vorgespannten Federspannungskolben in der Ausführung als entmagnetisierbarer Permanentmagnet,

Fig. 5:

die Auslösevorrichtung für einen Löschmittelbehälter in schematischer Darstellung im Schnitt mit einem Thermotrennglied als Freigabevorrichtung,

Fig. 6:

die Auslösevorrichtung für einen Löschmittelbehälter in schematischer Darstellung mit einer zusätzlichen, pneumatisch betriebenen Schaltvorrichtung und

Fig. 7:

die Auslösevorrichtung für einen Löschmittelbehälter mit der Einwirkung auf einen Auslöseknopf als Betätigungselement.

The drawings show:

Fig. 1:

a schematic representation of the triggering device on the holder of a rocker arm valve on an extinguishing agent container,

Fig. 2:

a schematic representation of the triggering device with an additional manual trigger element,

3:

the triggering device on the holder of a rocker arm valve on an extinguishing agent container in a schematic representation with an electrically demagnetizable permanent magnet and a control unit,

4:

a schematic representation of the release device for the prestressed spring tension piston in the embodiment as a demagnetizable permanent magnet,

Fig. 5:

the triggering device for an extinguishing agent container in a schematic representation in section with a thermal isolator as a release device,

Fig. 6:

the triggering device for an extinguishing agent container in a schematic representation with an additional, pneumatically operated switching device and

Fig. 7:

the triggering device for an extinguishing agent container with the action on a release button as an actuator.

The Fig. 1 shows the triggering device 6 according to the invention for an extinguishing agent tank on a toggle valve 1 on an extinguishing agent tank 2 in a schematic representation in section. The triggering device 6 is attached to a holder 5 on the toggle valve 1. At the toggle valve 1, a riser pipe 3 is mounted. The toggle valve 1 is provided with a check valve 4. About this check valve 4, the extinguishing agent tank 2 can be charged with gas pressure. On the holder 5 of the rocker arm valve 1, the tripping device 6 according to the invention is arranged. In the release state, the release piston 8 acts on the actuating element 31, the rocker arm, actuates it, so that the toggle valve 1 opens and releases the extinguishing agent through the riser pipe 3 via an extinguishing line or nozzle connected to the valve (not shown).

The triggering device 6, is in detail in Fig. 2 shown. It consists of a housing 7 for the triggering device 6, a spring tensioning piston 10 to which a tensioning device 16 is attached, a spring 14 between the spring tensioning piston 10 and a housing wall 11, a release device 40 and a release piston 8, which in the standby state in the housing 7 in The release piston 8 is arranged and designed such that it acts in the release state with its force on the actuating element 31, in this embodiment designed as a rocker arm on the toggle valve 1, the axial direction, is independent of the fixation of the spring tensioning piston 10 with the clamping device , actuates the rocker arm and thus opens the toggle valve 1 and releases the extinguishing agent from the extinguishing agent container 2.

The action of the release piston 8 on the actuator 31 is independent by the arrangement of the spring tension piston 10 and the release piston 8 in the guide bush 30 in the housing 7 and by the free linear mobility of the release piston 8 in the axial direction of the guide bush 30 in the direction of the actuating element 31 allows the fixation of the spring tension piston 10. In the release state, the spring 14 is relaxed by the release device 40, the spring tension piston 10 moves in the axial direction in the guide bush 30 towards the trigger piston 8 and the spring tension piston 10 transmits the released force on the release piston 8, which moves to the actuator 31 and on this exerts a force and releases the extinguishing agent from the extinguishing agent tank 2.

In the idle state, which is a state in which there is no fire event, the tensioning device 16 with the arranged between the spring tension piston 10 and a housing wall 11 spring 14, the bias of the spring tension piston 10. The tensioning device 16 is connected to the release device 40 and generated in the idle state the necessary force to bias the spring tension piston 10. As a spring 14, a compression spring is used. The clamping device 16 is formed in the illustrated embodiment as a cable and connected at one end to the spring tension piston 10. The tensioning device 16 enters via an opening the housing wall 11 from the housing 7 and is connected to the other end with the release device 40 and thus biases the spring 14th

Fig. 2 also shows a driver 9 connected to the release piston 8, which performs the same linear movement as the release piston 8 in the release state. At this driver 9, a first pulling device 17.1 is arranged, which is connected to a mechanical actuating element 41. The first traction device 17.1 performs the same linear movement in the release state as the driver 9 and the release piston 8. The upper portion of the driver 9 is provided with a through bore, which is provided for receiving the first traction device 17.1 and / or the second traction device 17.2 ,

In order to ensure the linear mobility of the driver 9, which protrudes from the housing 7, the housing 7 of the triggering device 6 is provided with a guide opening 12, preferably a slot in which the driver 9 can move in the release state. The first pulling device 17.1 is designed as a cable. In the trip condition, the biasing force of the spring tension piston 10 transmitted to the trigger piston 8 produces a tensile force on the pulling device rectified by the force of the trigger piston 8 which actuates the mechanical actuator 41 to shut off the power supply of the burning or hazardous object.
The first traction device 17.1 is attached by means of cable clamps 18 on the driver 9 and moves freely movable through an opening in a holder 15 which is fixed to the housing 7 and the first pulling device 17.1 leads. The brackets 15 are connected to the housing 7 via fastening elements 13.

In Fig. 2 and 3 the additional possibility of manual release is shown. At the driver 9, a manual release element 26 is attached. It is shown a preferred variant, in which the manual release element 26 is not directly on the driver 9, but via a second pulling device 17.2, designed as a cable, with cable clamps 18 on the driver 9 is attached. The second pulling device 17.2 is freely movable through an opening in a holder 15 which is fixed to the housing 7.

If necessary, the triggering device 6 can be triggered manually via the manual release element 26. About the manual release element 26, a tensile force is exerted manually in the axial direction of the housing, in the direction of the actuating element 31 for the release of the extinguishing agent. This manual pulling force is converted into the rectified force of the tripping piston 8 connected to the driver 9, the tripping piston 8 moves linearly in the direction of the actuating element 31, switches it and releases the extinguishing agent. This manual tension takes over in this case, the role of the released biasing force of the spring 14 and the spring tension piston 10. Since the driver 9 is connected to the first pulling device 17.1, which performs the same linear movement as the driver 9, the manual triggering using the Manual release element 26 in this embodiment, in addition to the operation of the mechanical actuator 41 for an emergency shutdown. In Fig. 3 schematically the possibility of switching off a gas supply valve 27 by means of the mechanical actuating element 41, designed as a spring-assisted mechanical unlocking or locking device shown. Also in Fig. 5 illustrated embodiment is equipped with a manual release element 26 for a manual release.

In Fig. 3 and 4 the automatic release of the triggering device 6 via the release device 40 in the embodiment as a demagnetizable permanent magnet 24 is shown schematically. In the firing state, fire detection, the permanent magnet 24 is deactivated by an electrical signal. For this purpose, the permanent magnet 24 is arranged with a coil for generating an alternating magnetic field for demagnetization. The electrically deactivatable permanent magnet 24 is, as in Fig. 4 shown attached to a holder 23 on the housing 7 stationary. The tensioning device 16, which is designed as a cable, is connected to a magnetic holding element 22 in the form of a disk. The adhesion of the magnetic holding element 22 and thus also the clamping device 16 generates the bias of the spring tensioning piston 10 and the spring 14. In the manual release via the manual release element 26, the bias of the spring tension piston 10 remains and the spring 14.

The electrically deactivatable permanent magnet 24 is connected by cable or wirelessly via a transmitting and / or receiving device (not dargstellt) with a fire detector 29 and a control unit 28. Upon detection of a fire or the formation of a fire, the demagnetization or weakening of the magnetic field of the electrically deactivatable permanent magnet 24 is achieved by applying a voltage signal to the coil of the permanent magnet 24. The adhesion of the tensioning device 16 to the electrically deactivatable permanent magnet 24 and thus the bias of the tensioning device 16 and the spring tensioning piston 10 is released. As a result, the spring tension piston 10 moves in the direction of the release piston 8 and transmits the biasing force to this. The release piston 8 acts with its force on the actuating element 31, the rocker arm on the toggle lever valve 1 in this embodiment, and releases the extinguishing agent. The representation in Fig. 3 shows the application of the triggering device 6 in a kitchen protection system, in which the triggering takes place via an automatic fire detection, a fire alarm 29 and a control unit 28 by an electrically demagnetizable permanent magnet 24.

At the in Fig. 4 illustrated embodiment, the housing 7, a switch 20 in the form of a reed switch and the first pulling device 17.1, designed here as a cable, a switch trigger element 19 is arranged in the form of a permanent magnet. The permanent magnet is attached with cable clamps 18 on the cable. In the release state, the release piston 8 and the driver 9 perform a linear movement. The switch trigger element 19 in the form of the permanent magnet is guided over the reed switch and thereby the switch 20 is actuated. The switch 20 is used to relay the trip condition via a cable connection of the switch 20 to a control center 28 to a remote location and to actuate an optical and / or audible alarm means or initiate other follow-up actions.

In Fig. 5 a preferred embodiment of the invention is shown, in which the release device 40 as a thermal isolator 25 and the tensioning device 16 and the first pulling device 17.1 are designed as a cable.

In this case, the cable pull as tensioning device 16, the spring tension piston 10 and the spring 14 under tension by the cable at one end to the spring tensioning piston 10 and at the other end with a stationary part, such as a wall or a fixed mechanical device is fixedly connected and thus generates the biasing force against the spring force. The cable includes a thermal isolator 25 as a temperature-sensitive triggering element, in this embodiment, a fusible link. In case of fire, a predefined temperature is exceeded, the fusible link melts and the preload is removed. As a result, the spring tension piston 10 moves in the direction of the release piston 8 and transmits the biasing force to this. The release piston 8 acts with its force on the actuating element 31, the rocker arm on the toggle lever valve 1, opens the toggle valve 1 and releases the extinguishing agent. About the driver 9, the force of the release piston 8 generates a tensile force with which the first pulling device 17.1 actuates a mechanical actuator 41 and thus a gas supply valve 27 closes. The representation in Fig. 5 shows the application of the triggering device 6 for an extinguishing agent container in a kitchen protection system, in which the triggering takes place via a thermo-separator 25. However, these application examples do not constitute a restriction. The triggering device 6 according to the invention can be used wherever a fire extinguishing agent is to be released from an extinguishing agent container.

In Fig. 6 the triggering device (6) according to the invention is shown on an extinguishing container (2), which has an additional pneumatic switching device. On the housing 7, a cylinder 37 and a piston with piston rod 38 are attached. The cylinder 37 is provided with a vent opening 39. A pneumatic control line 35 is arranged on the cylinder 37, which is in fluid communication with the discharge line 34, in which the extinguishing agent of the extinguishing agent container 2 is released in the release state. The piston with piston rod 38 is connected to a third pulling device 36, in this embodiment designed as a cable. This traction device is connected to a mechanical actuator 42 and can perform 42 switching operations in the release state via this mechanical actuator.

In the triggering state, the triggering device 6 releases the fluidic connection between the inlet connection 32 and the outlet connection 33 via the actuation of the actuating element 31, the switching of the tilting lever on the toggle lever valve 1. The pressurized extinguishing gas thus passes from the outlet pipe 33 connected to the extinguishing line 34 in the bypass via the control line 35 in the cylinder 37 and moves the piston and the piston rod 38 with the attached third traction device 36 in the axial direction of the cylinder 37. It is a vent opening 39th in the wall of the cylinder 37, in the volume area in which no pressurization by the quenching gas takes place. The vent 39 ensures that the piston is always working against atmospheric pressure.

Fig. 7 schematically shows the arrangement of the tripping device 6 according to the invention for triggering an extinguishing agent container 2 with a gas generator 45 for generating the discharge pressure for the extinguishing gas in the extinguishing agent container 2. In the triggering state, the force of the release piston 8 acts on the actuating element, which is designed as a trigger button 43 in this embodiment. The trigger button 43 is pressed by the release piston 8 and activates the electric igniter 44 of the gas generator 45. The quenching gas is now discharged via the extinguishing agent tank 2 connected to the extinguishing line 34 or the connected nozzle. The triggering device 6 is connected to a holder 5 with the extinguishing agent container 2 or with a relative to the extinguishing agent container stationary means (not shown).

List of reference numbers used

1

Lever valve

2

Extinguishing agent container

3

riser

4

check valve

5

bracket

6

triggering device

7

casing

8th

release plunger

9

takeaway

10

Spring-loaded piston

11

housing wall

12

guide opening

13

fasteners

14

feather

15

bracket

16

jig

17.1

first pulling device

17.2

second pulling device

18

Seilklemme

19

Switch triggering element

20

switch

22

magnetic holding element

23

holder

24

electrically demagnetizable permanent magnet

25

Thermal isolator

26

Manual release element

27

Gas supply valve

28

control Center

29

fire alarm

30

guide bush

31

actuator

32

inlet connection

33

outlet connection

34

erase line

35

control line

36

third pulling device

37

cylinder

38

Piston with piston rod

39

vent

40

release device

41

mechanical actuator

42

mechanical actuator

43

release button

44

Electric ignition device

45

inflator

Claims (13)

Tripping device (6) for an extinguishing agent container (2), consisting of a housing (7) for the triggering device (6), a spring tensioning piston (10) to which a tensioning device (16) is attached, a spring (14), - A release device (40) and - A release piston (8) which is arranged in the standby state in the housing (7) movable in the axial direction, regardless of the fixation of the spring tensioning piston (10) with the clamping device (16), - wherein the release piston (8) is arranged and designed so that in the release state, the spring (14) by the release device (40) is relaxed and the spring tension piston (10) transmits the released force to the release piston (8) and the release piston (8 ) exerts a force on an actuating element (31) and thus releases an extinguishing agent from the extinguishing agent container (2). Device according to claim 1, characterized in that a first pulling device (17.1) is arranged on the release piston (8) or on a driver (9) connected to this release piston (8), which is connected to a mechanical actuating element (41). Device according to claims 1 or 2, characterized in that a manual release element (26) is arranged on the release piston (8) or on the driver (9). Device according to one of claims 1 to 3, characterized in that the release device (40) is a thermal isolator (25). Device according to one of claims 1 to 3, characterized in that the release device (40) constitutes an electrically deactivatable permanent magnet (24). Apparatus according to claim 5, characterized in that the electrically deactivatable permanent magnet (24) via cables or a transmitting and / or receiving device with a fire detector (29) and / or a control unit (28) is connected. Device according to one of claims 1 to 6, characterized in that the tensioning device (16) and / or the pulling device (17.1, 17.2, 36) is designed as a cable pull. Device according to one of claims 1 to 7, characterized in that the spring (14) is designed so that on the release piston (8) transmitted force is 10 N to 1000 N. Device according to one of Claims 1 to 8, characterized in that a switch (20) is arranged on the housing (7) and a switch trigger element (19) is arranged on the first pulling device (17.1). Device according to one of claims 1 to 9, characterized in that the switch (20) via a cable or a transmitting and / or receiving device to a control center (28) is connected. Device according to one of claims 1 to 10, characterized in that the tensioning device (16) with a magnetic holding element (22) is connected, which is set up and formed so that it adheres to the electrically deactivatable permanent magnet (24) in the idle state. Device according to one of claims 1 to 11, characterized in that on the housing (7) a cylinder (37), a piston with piston rod (38) and a control line (35) is arranged, wherein the cylinder (37) with a vent opening ( 39) is provided and the piston with piston rod (38) with a third pulling device (36) is connected and the control line (35) with a discharge line (34) is in fluid communication. Device according to one of claims 1 to 12, characterized in that the actuating element (31) is a rocker arm on a rocker arm valve (1) or a release button (43) for an electrical release of a gas generator (45).

Images