EP3094385B1 - Control station and method for actuating two extinguishing agent supply devices - Google Patents

Description

The invention relates to a fire alarm and / or extinguishing control center for controlling two extinguishing agent supply devices and a method for controlling two extinguishing agent supply devices.

The invention is applicable everywhere where an efficient, environmentally friendly, safe and cost-effective extinguishing a fire with two extinguishing agent supply facilities are required for machines, equipment and facilities in rooms and open areas and their control is performed by a fire alarm and / or extinguishing control center.

For the protection of machinery, equipment and facilities in large spaces and open areas, water extinguishing systems, CO ₂ extinguishing systems and powder extinguishing systems are currently being used. The use of quenching gases, such as argon, nitrogen, and synthetic gaseous quenching agents, such as HFC-227ea, requires a dense, enclosed space, which is typically not found in large and open space applications. Furthermore, an economic use of this extinguishing agent is not possible with these room sizes.

In many of these object protection applications, the use of water, water-based extinguishing agents, such as water with additives such as wetting and foaming agents, powder extinguishing agents and CO ₂ with significant disadvantages. Water causes short circuits, promotes corrosion and, if contaminated with subsequent fire products, must be specifically collected and disposed of.
With the use of water mist systems, by producing very small diameter water droplets, it is attempted to achieve a higher extinguishing effect while reducing the quantity of extinguishing water, but the physical properties of the medium water, especially the trajectories of the water droplets affected by the thermal fires, also limit these Applications.

The residue-free CO ₂ already leads to endangering people in a low concentration and is lethal at higher concentrations.

Prior to the halon ban (Halon is still permitted in some non-EU countries and with special permits within the EU), the synthetic extinguishing gas Halon 1211 has been used for many of these applications. The electrically non-conductive, residue-free, and ambient-pressure gaseous halon 1211 could also be used for the protection of objects in open areas because of its properties or its extinguishing mechanism.

The synthetic halon successor products developed by the chemical industry as extinguishing agents are primarily designed for use in gaseous phase and for use in tight closed rooms in the room protection concept. This approach is primarily due to the quenching mechanism of these synthetic quenchers which, unlike the chemical chain termination reaction of halons, relies on heat removal. In order to achieve this effect of the heat extraction, a longer residence time of the synthetic extinguishing agent at the flame, a longer exposure time of the extinguishing agent is required to safely extinguish an energetic fire.

To date, there is no system on the market and no solution with synthetic extinguishing agents that can be used for object and device protection in the form described. The main focus of all on the market and known systems is to optimize the evaporation of liquid stored synthetic extinguishing agent at the nozzles to get as fast as possible in a dense closed space a löwirksames homogeneous gaseous extinguishing agent - air mixture that can quickly extract heat from the fire.

WO 2004 / 098718A1 discloses a fire alarm and extinguishing control panel for a combined gas and water spray extinguishing system with a common piping system, the combined plant comprising an extinguishing gas supply, a fire water supply, a common pipe, a fire detection device, and a Sprühwasserventilstation and a selector valve in the gas supply line. The selector valve controls the quench gas flow from the gas supply line directly into the common piping to the extinguishing nozzles and is controlled by the extinguishing controller, which also controls the spray water station and releases or blocks the flow of water directly into the common piping to the extinguishing nozzles. The WO 2004 / 098718A1 further discloses a method for extinguishing a fire, which after unsuccessful extinguishing with the extinguishing gas comprises the step of manually triggering the water extinguishing system, wherein the manual triggering takes place via an operator by pressing a Sprühwasserventilstationsschalter.

Out EP 2594319 A1 is a system for extinguishing or inerting with a synthetic extinguishing agent consisting of an extinguishing agent tank, a pipe to the nozzles, an event detector and a fire alarm and / or control center known, the fire alarm and / or control center according to a predetermined value or limit as a controlled variable controls the dispensing of the amount of extinguishing agent via a conveyor for the quantity of extinguishing agent to be applied. In this system, the liquid synthetic extinguishing agent goes to the extinguishing nozzles in the gas phase and is effective at the flame on the fire as a gaseous extinguishing agent, which takes some time to a lukewarm homogeneous gaseous extinguishing agent - air mixture is built up at the flame, the fire and The extinguishing agent can not immediately, not fast enough on the flame, can affect the fire.

Another disadvantage of known systems of this type and their control is that only a limited volume of liquid synthetic extinguishing agent can be provided, and after extinguishing and complete consumption of the liquid synthetic extinguishing agent in the case of reignitions and re-firing of the fire no further deletion can take place.

In contrast, in the case of a required rapid extinguishment in object protection applications, as much synthetic extinguishing agent in liquid form must be introduced directly into the active zone. Evaporation of the liquid synthetic extinguishing agent at the nozzle would mean a loss of extinguishing effect, of exposure time of the extinguishing agent in the zone of action. However, there must also be control devices which can detect fire signals after delivery of the entire amount of available synthetic extinguishing agent, if the fire was not deleted, or flares up again and which in this case controls a second water-based extinguishing system.

For the purposes of the invention, the term effective zone is understood to mean the location of the development of the extinguishing effect, the flame and / or the combustion zone and / or the source of the fire. In the case of liquid synthetic extinguishing agent is the extinguishing effect in the cooling (heat energy removal) and the transition of the liquid extinguishing agent in the gaseous phase, the local oxygen displacement occurs.

Based on this prior art, it is therefore an object of the invention to provide a safe, environmentally friendly and cost-effective solution for fast and secure deletion of To develop objects or facilities in rooms, especially in large or open spaces in which a synthetic extinguishing agent is used in a limited amount, acts intensively and reliably extinguishes a fire even after the consumption of liquid synthetic extinguishing agent.

This object is achieved by a fire alarm and / or extinguishing control center according to the features of the first patent claim and by a method according to claim 12.

Subclaims give advantageous embodiments of the invention again.

The inventive solution relates to a fire alarm and / or extinguishing control center for controlling two extinguishing agent supply devices.

The first extinguishing agent supply device of the two extinguishing agent supply devices preferably has at least one extinguishing agent container. The second extinguishing agent supply device of the two extinguishing agent supply devices preferably has at least one storage container.

According to the invention, the fire alarm and / or extinguishing control center on a control unit which is adapted to the activation of a first extinguishing agent supply means (17) upon detection of a first fire signal at time t ₁ , upon detection of a second fire signal at time t _{2 to control} a second extinguishing agent supply device if it has checked whether the time t ₂ satisfies the inequality (t ₁ + t _c ) <t ₂ <(t ₁ + t _b ), where t _{c is} the emptying time of the complete emptying of at least one extinguishing agent container (1) of the first extinguishing agent supply device, t _{k is} the monitoring time after the emptying time t _c and t _{b represent} the monitoring period and the monitoring period t _b starting from the time t _{1 is} the sum of the emptying time t _c and the control time t _k .

The first extinguishing agent supply device has a first extinguishing fluid in preferably at least one extinguishing agent container, preferably a liquid synthetic extinguishing agent. In an alternative embodiment, the at least one extinguishing agent container is not completely, but partially emptied.

The second extinguishing agent supply device has a second extinguishing fluid in preferably at least one storage container, preferably water or water-based extinguishing agent in a reservoir which is in the form of a water reservoir. In an alternative embodiment, the first extinguishing agent supply unit comprises at least an extinguishing agent container, an extinguishing gas, in particular inert gas or a gas mixture, which is provided by the first extinguishing agent supply unit for deletion.
The inventive fire alarm and / or extinguishing control unit and the inventive method are not limited to the control of a first extinguishing agent supply unit with liquid synthetic extinguishing agent as the first extinguishing fluid and a second extinguishing agent supply device with water or water-based extinguishing fluid as a second extinguishing fluid, but includes any combinations of first extinguishing fluids of the first and second extinguishing fluids of the second extinguishing agent supply device. Furthermore, the fire alarm and / or extinguishing control unit according to the invention and the method for controlling two extinguishing agent supply devices is described essentially with a preferred embodiment with a liquid synthetic extinguishing agent in at least one extinguishing agent container of the first extinguishing agent supply device and water or water-based extinguishing agent in the second extinguishing agent supply direction.

In a preferred embodiment, the control unit comprises a signal processing unit, in particular a microcontroller or a digital signal processor. This signal processing unit is part of an evaluation unit for evaluating signals associated with the fire alarm and / or extinguishing control panel event reporting. In an advantageous embodiment, the control unit comprises at least two modules, a first module which is equipped with an evaluation unit and a second module which generates control signals for controlling extinguishing agent supply devices and / or shutdown signals and preferably also comprises a signal processing unit. In a further preferred embodiment, at least one signal processing unit and optionally memory are arranged in the fire alarm and / or extinguishing control center, which are signal-conducting connected to the first and second module and preferably with other modules of the fire alarm and / or extinguishing control center.

1. (a) Erfassen eines ersten Feuersignals, insbesondere durch mindestens einen Ereignismelder und eine Brandmelder- und/oder Löschsteuerzentrale zum Zeitpunkt t₁,
2. (b) Ansteuern einer ersten Löschmittelversorgungseinrichtung, insbesondere durch die Brandmelder- und/oder Löschsteuerzentrale, zum Ausbringen eines ersten Löschfluids, vorzugsweise von flüssigem synthetischen Löschmittel, insbesondere über eine Trennstation, eine gemeinsame Rohrleitung und mindestens eine Düse,
3. (c) Erfassen eines zweiten Feuersignals zum Zeitpunkt t₂, und
4. (d) Ansteuern einer zweiten Löschmittelversorgungseinrichtung, und Austragen von einem zweiten Löschfluid, vorzugsweise Wasser oder wasserbasiertem Löschmittel, insbesondere über die Trennvorrichtung, die gemeinsame Rohrleitung und die mindestens eine Düse, zur Löschung.

The method for deleting objects or devices comprises the following preferably consecutive process steps:

1. (a) detecting a first fire signal, in particular by at least one event detector and a fire alarm and / or extinguishing control panel at the time t ₁ ,
2. (b) activating a first extinguishing agent supply device, in particular by the fire detection and / or extinguishing control center, for discharging a first extinguishing fluid, preferably of liquid synthetic extinguishing agent, in particular via a separation station, a common pipeline and at least one nozzle,
3. (c) detecting a second fire signal at time t ₂ , and
4. (D) driving a second extinguishing agent supply means, and discharging a second extinguishing fluid, preferably water or water-based extinguishing agent, in particular via the separator, the common pipe and the at least one nozzle, for extinction.

The liquid synthetic extinguishing agent is preferably discharged from one or more extinguishing agent containers and / or from the storing pipe which is filled with the liquid synthetic extinguishing agent.
The method is particularly suitable for the deletion of objects or devices such as machines or plants in large and / or open spaces. Rooms or open spaces with the objects or facilities to be protected represent the protected areas.
The liquid extinguishing agents are routed through the common pipe to at least one nozzle and spread over this to the fire in the vicinity or on the object or device in the protected area to extinguish the fire. As a rule, several nozzles are arranged, the number depends on the size and shape of the object or the device and the size of the protected area. If in the following, in particular in the claims of only one nozzle is mentioned, then always at least one nozzle is meant, ie, a plurality of nozzles. If in the following from the second extinguishing agent water or only water is mentioned, then always as an alternative meant water-based extinguishing agent. If more than one nozzle is located, then the common pipe includes a distribution pipe network which directs the extinguishing agent to the nozzles disposed about the protective object or device in predefined positions.

When using multiple nozzles, the common pipe has branches, a distribution pipe network to the nozzles and possibly to other protection areas. A common pipeline is therefore also understood below to mean such a pipeline network which is used for both liquid extinguishing agents for discharging via the nozzles.

In an alternative embodiment, the pipeline or the pipe network to the nozzles serves as an extinguishing agent container. Here, the pipeline is closed with a trigger valve. The Trigger valve is located directly in the protection area and the nozzles are connected with short branch lines. The triggering valve comprises a triggering element which reacts in particular to the fire characteristic heat. Alternatively, the trigger valve is provided with an electrical release, for example with a magnetic piston or a pyrotechnic release. The pyrotechnic trigger is an electrically ignitable pyrotechnic element, which exerts a force to trigger.

In a further alternative embodiment, as an alternative to a trigger valve, the pipeline or the pipe network is closed with sprinkler nozzles which comprise a glass barrel, the glass barrels of the sprinklers being opened by triggering elements, for example magnetic lifting pistons or a pyrotechnic trigger. The advantage of this solution lies in the short flooding time.

Thus, the method for extinguishing objects or devices with the above-mentioned process steps (a) to (d) may alternatively be formed with a pipe to the nozzles as the extinguishant container and containing the liquid synthetic extinguishing agent, wherein the pipe or the Piping network are closed with release valve and / or sprinklers and the sprinklers are activated in case of fire by a trigger device (magnetic piston / pyrotechnic release).

In an advantageous embodiment of the method, the liquid synthetic extinguishing agent is a non-flammable, non-flammable, electrically non-conductive liquid having a vapor pressure at 21 ° C of 0.1 to 3 bar and / or at a temperature of 21 ° C, a Density 1,400 kg / m ³ to 1,800 kg / m ³ has.

In a further advantageous embodiment of the method, the liquid synthetic extinguishing agent is a FK-5-1-12 (C ₄ F ₉ OCH ₃ ). This is the known under the brand name NOVEC 1230 extinguishing agent, which in the ASHRAE nomenclature FK is 5 -1-12. It is listed in standards NFPA 2001 and ISO 14520 and is also represented by the chemical formulas (C ₄ F ₉ OCH ₃ ) or 1,1,1,2,2,4,5,5,5-NONAFLUORO-4- ( TRIFLUOROMETHYL) -3-PENTANONE.

In a further advantageous embodiment of the method, the liquid synthetic extinguishing agent is a fluoroketone.

In a further embodiment of the method is by the control of the first extinguishing agent supply device by the fire alarm and / or extinguishing control center for discharging the first extinguishing fluid, preferably the liquid synthetic extinguishing agent, in particular from the extinguishing agent container via the pipe and the at least one nozzle, the liquid synthetic extinguishing agent by means of pressurized gas, preferably nitrogen, driven from the extinguishing agent container through the common pipe to the nozzle. For this purpose, the fire alarm and / or extinguishing control center sends a control signal to a valve and / or to a device for pressurizing the liquid synthetic extinguishing agent in the extinguishing agent container. In an advantageous embodiment, the pressurized gas superimposed on the liquid synthetic extinguishing agent in the extinguishing agent container of the first extinguishing agent supply device. The pressure of the pressurized gas in the extinguishing agent tank (1) is 25, 42 or 50 bar.

The extinguishing agent container is closed with a valve which opens the extinguishing agent container when actuated by the fire alarm and extinguishing control panel and the extinguishing agent can be discharged.

In a further advantageous embodiment of the method takes place after the process step (b), a flushing of the common pipe and the nozzle or nozzles with a gas, preferably nitrogen. This is preferably done with the remaining pressurized gas from the extinguishing agent container for the liquid synthetic extinguishing agent. This has the advantage that the common pipe and the nozzles have no or very small amounts of the liquid synthetic extinguishing agent and thus a reaction with the second liquid extinguishing agent, preferably water or water-based extinguishing agent is avoided and thus corrosion in the common pipe and extinguishing agent passing components is avoided.

In a further advantageous embodiment of the method, the liquid synthetic extinguishing agent is discharged via a conveyor from the extinguishing agent tank via the common pipe and the at least one nozzle. Preferably, one or more pumps are used as a conveyor or pressure increasing devices such as pyrotechnic gas generators or charging cartridges that release in the driving case upon detection of a fire gas at a predefined pressure, which is passed into the extinguishing agent container for discharging the liquid synthetic extinguishing agent. In these embodiments, the control of the first extinguishing agent supply device by the fire alarm and / or extinguishing control center in the process step (b) according to the invention by sending control signals via the signal-conducting connection to the conveyor takes place.

To detect a fire signal, at least one event detector is present in the protected area. Preferably, these event messages are located in the vicinity, on or even in the object to be protected. A fire signal is understood to mean the detection of a fire parameter which exceeds a predetermined limit value or the manual operation of a manual call point, which sends a fire signal to the fire alarm and / or extinguishing control panel according to the invention. The detection of a fire characteristic is carried out by the sensors of an event detector, preferably an automatic fire detector.

Fire characteristics are understood to mean all parameters such as smoke, heat and flame radiation as well as combustion gases that characterize a fire that has arisen or has broken out. They are based on the measurement of physical parameters such as light scattering of smoke aerosols and / or temperature, electromagnetic radiation, or the detection of combustion gases such as CO, NO _x or longer-chain hydrocarbons or other schwelbrandkennzeichnender substances. All parameters which serve for fire detection are referred to below as fire characteristics.

Fire detectors in the protected area are preferably arranged as event detectors. As fire detectors, depending on the expected fire characteristics in a protected area, automatic fire detectors, such as smoke detectors, heat detectors, flame detectors, spark detectors, fire gas detectors, Rauchansaugsysteme, and / or manually operated manual call points are used.

The decision whether the detection of a fire parameter is a fire signal is preferably made by appropriate evaluation algorithms in the electronic evaluation unit of the event detector, preferably the fire detector. The fire signal can also be a pre-alarm to take appropriate action.

Preferably, the event alarms send the fire signal via a signal-conducting connection to the fire alarm and / or extinguishing control center, which then detects this fire signal.

For the signal-conducting connection between the event detector and the fire alarm and / or extinguishing control panel according to the invention preferably electrical lines are provided. Alternatively or additionally, the transmission of the fire signal by means of a wireless data transmission, for example by radio, the signal-conducting connection is then a radio connection.

The decision whether the detection of a fire parameter is a fire signal can also be carried out by appropriate evaluation algorithms in an evaluation unit or control unit of the fire detection and / or extinguishing control panel, as well as the detection of a fire signal by the manual operation of a manual call point.

In a particularly preferred embodiment of the method, the fire signal counts as detected if this has detected the fire alarm and / or extinguishing control signals as a fire signal and indicates a fire alarm and / or forwards to a constantly occupied place.

• Weiterleitung einer Brandmeldung an die ständig besetzte Leitstelle zur Alarmierung der Feuerwehr
• Auslösung eines Räumungsalarms zur Räumung eines Gebäudes oder eines Teiles davon;
• Ansteuerung von Rauchabzugseinrichtungen und/oder von Feuerschutzabschlüssen;
• Abschaltung von zu schützenden Objekten und Einrichtungen wie beispielweise Maschinen, EDV-Einrichtungen;
• Ansteuerung einer Löschanlage oder einer Löschmittelversorgungsvorrichtung und Öffnen von Ventilen an Löschmittelbehältern und an/in löschfluidführenden Komponenten;
• Steuerung des Löschvorgangs.

The fire alarm panel used for the method according to the invention is a receiving and control center, which evaluates the events of various event detectors in particular fire signals from fire detectors, which are arranged in the or more protection areas, and then initiates follow-up actions. In response, the fire alarm panel acts as a control center and display unit and can control various technical facilities as a follow-up, for example:
Control of an internal or external display panel and individual and group displays, such as LEDs and displays for fire and event messages

• Forwarding of a fire alarm to the constantly occupied control center for alerting the fire brigade
• Triggering of an evacuation alert to evacuate a building or part thereof;
• Control of smoke extraction devices and / or fire protection closures;
• Shutdown of objects to be protected and facilities such as machinery, computer equipment;
• Activating an extinguishing system or an extinguishing agent supply device and opening valves on extinguishing agent containers and on / in extinguishing fluid-carrying components;
• Control of the deletion process.

An extinguishing control center is signal-conducting connected to a fire alarm control panel or a control center or a control system, receives a fire signal and controls an extinguishing system, triggers this to apply the extinguishing agent in the protected area in which a fire was detected and controls the deletion process, preferably by opening and optionally closing valves on extinguishing agent containers and / or on / in extinguishing fluid-carrying components.
An extinguishing control panel for gas extinguishing systems or extinguishing systems with synthetic extinguishing agents may preferably fully or partially meet the requirements of EN12094-1.
A fire alarm and extinguishing control panel is a combined control center, which has all the components to meet the above functions and operation of a fire alarm and extinguishing control center.

The fire detector and / or extinguishing control panel according to the invention preferably has the following special features.
The fire alarm and / or extinguishing control panel performs all necessary for the function of the system monitoring, controls, regulations, alarms, off or on by. In advantageous embodiments, it can forward all switching and operating states to predefined receiving devices, such as building management systems. The fire alarm and / or extinguishing control center is signal-conducting connected both to the conveyor and to the level and pressure monitoring device. Furthermore, the fire alarm and / or control center detects and processes the signals of the event report. In addition, the fire alarm and / or extinguishing control center may also be connected to the signal to be deleted machines, facilities and / or facilities and turn these off or on.

The control unit of the fire alarm and / or extinguishing control center, which is connected by signal technology with the evaluation of the fire signals, initiates all follow-up actions, all controls.
The control unit of the fire alarm and / or extinguishing control panel can be programmed and configured by various means, a personal computer, a tablet computer, a service or programming tool. For this purpose, an existing in or on the fire alarm and / or extinguishing control panel programming interface is used. With these means, parameters such as times, in particular an emptying time t _c , a monitoring time t _k, a monitoring time t _b can be stored in a memory of the control unit and / or the fire alarm and / or extinguishing control center. The programming preferably stored in the signal processing unit of the control unit then forwards the preprogrammed follow-up actions when detecting fire signals, in particular the control of extinguishing agent supply devices.

The programming stored in the microcontroller system of the control unit contains a test module which generates a signal for activating a second extinguishing agent supply device when a second fire signal is detected at time t ₂ when the test module determines that the time t _{2 is} the inequality (t ₁ + t _c ). <t ₂ <(t ₁ + t _b ), where t _{c represents} the discharge time of the complete or partial emptying of the at least one or more extinguishant containers of the first hole supply unit, t _{k is} the control time following the purge time t _c and t _{b is} the monitoring period and the monitoring period t _b starting from the time t _{1 is} the sum of the emptying time t _c and the control time t _k .
In an advantageous embodiment of the fire alarm and / or extinguishing control center, the stored in a signal processing unit of the control unit programming on a test module, which generates a signal for controlling the second extinguishing agent supply device upon detection of the second fire signal at time t ₂ , if the test module determines that the Time t ₂ satisfies the inequality (t ₁ + t _c ) <t ₂ <(t ₁ + t _b ).
In a further advantageous embodiment of the fire detection and / or extinguishing control panel, the fire detector and / or extinguishing control panel in a memory, and further comprising a programming interface that is configured and arranged such that via the programming interface with a programming and / or configuring means the emptying time t _c , the control time t _k and the monitoring time t _b are stored in the memory.
In a preferred embodiment of the fire alarm and / or extinguishing control center, the programming and / or configuration means represent in particular a personal computer, a tablet computer, a notebook, a smartphone or a service or programming tool.
In an advantageous embodiment, the fire alarm and / or extinguishing control panel is set up that these parameters can be entered and / or changed in addition or exclusively via the controls of the display and control unit of the fire alarm and / or extinguishing control panel.

In an advantageous embodiment, the central control unit of the fire alarm and / or extinguishing control center is configured so that the method step (b) is initiated only when two event detectors each detect a fire signal, preferably within a predetermined time interval. This increases the reliability of the triggering of the deletion process and reduces false triggering by deception sizes. In this case, the central control unit is configured so that only the reception of two fire signals from two fire detectors from a protected area, the fire alarm and / or extinguishing control center this as a fire signal, evaluated as the first fire signal and as a consequence, the control of the first extinguishing agent supply device.
In a preferred embodiment, the control of the first extinguishing agent supply device by the fire alarm and / or extinguishing control center by sending a control signal to a valve, preferably to a solenoid valve, which is arranged on the extinguishing agent container or the extinguishing agent-storing component, and the valve opens and gives the extinguishing agent flow towards the at least one nozzle free.
The first extinguishing fluid, preferably the liquid synthetic extinguishing agent, which is preferably pressurized with gas, is discharged via the separating device and the common pipeline via the at least one nozzle in the protected area above the fire. In an alternative embodiment, a conveyor or to a pump is driven, which deploy the liquid synthetic extinguishing agent from the extinguishing agent container via the separator, the common pipe and the at least one nozzle.
The fire alarm and / or extinguishing control center stores the time t ₁ , the time of detection of a first fire signal, preferably in the arranged event memory. The time t ₁ then represents a stored parameter of the fire alarm and / or extinguishing control center.
In an advantageous embodiment, the fire alarm and / or extinguishing control center is formed at time t ₁ or after a subsequent predetermined delay time t _a , which may also assume the value zero, the power supply to be deleted machine, system or device by the fire alarm and / or delete extinguishing control panel. This breaks the power supply for a possible source of fire and / or prevents short circuits.

The central control unit of the fire alarm and / or extinguishing control center is designed and set up by programming and configuring a predetermined control time t _k and a predetermined discharge time t _c for the first extinguishing fluid from the extinguishing agent container or more extinguishing agent containers of the first extinguishing agent supply device, preferably of liquid synthetic extinguishing agent has stored. The emptying time t _c , begins from the time t ₁ , which was stored on detection of the first fire signal by the fire alarm and / or extinguishing control center. In an advantageous embodiment, the emptying time t _{c is} the time of emptying the at least one or more extinguishing agent containers of the first extinguishing agent supply device, for example one or three extinguishing agent containers. In further advantageous embodiments, the emptying time t _{c represents} the time of the complete or partial emptying. The emptying level in the partial emptying is preferably predefined, for example the partial emptying may be predefined with 90% or 70%.

The emptying time t _c is specified in a further advantageous embodiment as a stored parameter in the fire alarm and / or extinguishing control center. In an alternative solution, the emptying time t _{c is} calculated at the time t _m > t 1, preferably on the basis of extinguishing fluid parameter of the first extinguishing agent supply device detected by the extinguishing fluid parameter detection means.

The detection of these extinguishing fluid parameters via a signal-conducting connection of the extinguishing fluid parameter detection means with the fire alarm and / or extinguishing control center. The extinguishing fluid parameters are stored in the fire alarm and / or extinguishing control panel, preferably in the control unit.

• Druck und/oder Temperatur im Löschmittelbehälter,
• und/oder Durchflussmenge des Löschfluids in Verbindung mit der erfassten Zeitdauer des Austrags des Löschfluids ab dem Zeitpunkt t_1, oder
• und/oder Massendifferenz des Löschfluids vor oder zum Zeitpunkt t₁ und zum Zeitpunkt t_m,

oder eine Kombination hieraus.The fire alarm and / or extinguishing control center is formed in this advantageous embodiment to make this discharge time calculation based on the detected extinguishing fluid parameters. Extinguishing fluid parameters are in particular:

• Pressure and / or temperature in the extinguishing agent container,
• and / or flow rate of the extinguishing fluid in connection with the detected time duration of the discharge of the extinguishing fluid from the time t _1, or
• and / or mass difference of the extinguishing fluid before or at time t ₁ and at time t _m ,

or a combination of these.

In the control time t _k , which adjoins the emptying time t _c , the fire alarm and / or extinguishing control center checks whether another fire signal is detected. This may be the case if the extinguishing with the first extinguishing fluid, preferably the liquid synthetic extinguishing agent after process step (a), the fire is not extinguished, a reignition or re-flame occurs or a second fire breaks out.

The sum of the emptying time t _c and the control time t _k results in a monitoring period t _b , starting from the time t ₁ in which is checked by the fire alarm and / or extinguishing control center, whether a second stage of deletion with the second extinguishing fluid, preferably with water or water-based extinguishing agent. These times are therefore in the following functional relationship t _b = t _c + t _k .

If no fire signal was detected by at least one event detector and the fire alarm and / or extinguishing control panel until the time t ₁ + t _b , the deletion process is completed.

By programming and configuring the fire alarm and / or extinguishing control center and the times t _c and t _k and t _b are stored. They are thus preferably specified for the method according to the invention.

In an advantageous embodiment of the method is the time t ₂ after the complete or partial emptying of the extinguishing agent container, after the expiration time t _c , but it is within a monitoring period t _b , wherein the monitoring period t _b starting from the time t ₁ starting the sum of Emptying time t _c and a control time t _k , wherein the control time t _k is following the emptying time t _c and during this time t _k , in particular by the fire alarm and / or extinguishing control center, is checked whether a fire signal is detected and the Time t ₂ satisfies the inequality (t ₁ + t _c ) <t ₂ <(t ₁ + t _b ).

For this purpose, the central control unit of the fire alarm and / or extinguishing control center is designed and arranged such that it, by programming and configuration, the second extinguishing agent supply device controls and the second extinguishing fluid, preferably water or water-based extinguishing agent on the separator, the common pipe and the at least one Nozzle for deletion is discharged when at time t _{2 of} a second fire signal is detected by the event detector and the fire alarm and / or extinguishing control panel, and this time t ₂ after the complete or partial emptying of the at least one extinguishing agent container of the first extinguishing agent supply unit within the monitoring period t _b and t ₂ satisfies the inequality (t ₁ + t _c ) <t ₂ <(t ₁ + t _b ).

Thus, the fire alarm and / or extinguishing control center according to the invention is designed to carry out an on-demand two-stage extinguishing method, with the application of a first extinguishing fluid, preferably liquid synthetic extinguishing agent for the first extinguishing stage and if the fire in a predetermined time t _{b is} not extinguished or again flares up to apply a second quenching fluid, preferably water or water-based extinguishing agent as a second quenching stage.

In an advantageous embodiment of the method takes place before step (d) in the case of detection of a second fire signal at time t _2, a control of the separator by the fire alarm and / or extinguishing control center, to generate a switching position of the separator, which the transport path of the second extinguishing fluid , preferably of the water or of the water-based extinguishing agent, in the direction of the common pipeline and the at least one nozzle and completely blocks the transport path of the first extinguishing fluid, preferably the liquid synthetic extinguishing agent, from the first extinguishing agent supply device in the direction of the common pipeline and the nozzle. The detection of the fire signal takes place as in process step (a) by the at least one event detector and the fire alarm and / or extinguishing control center.

In a further advantageous embodiment of the method takes place before step (b) a control of the separator by the fire alarm and / or extinguishing control panel to generate a switching position which the transport path of the first extinguishing fluid, preferably the liquid synthetic extinguishing agent in the direction of the common pipe and the at least one nozzle releases and the transport path of the second extinguishing fluid, preferably the water or the water-based extinguishing agent, completely blocked by the second extinguishing agent supply device in the direction of the common pipe and the at least one nozzle.

• eine erste Löschmittelversorgungseinrichtung mit einem flüssigen synthetischen Löschmittel in einem Löschmittelbehälter, an dem ein Ventil angeordnet ist,
• eine zweite Löschmittelversorgungseinrichtung mit in einem Wasservorratsbehälter mit Wasser oder einem wasserbasierten Löschmittel, oder einer Wasserversorgungseinrichtung sowie einer Fördereinrichtung, welche den Volumenstrom und Druck für das Wasser oder das wasserbasierte Löschmittel erzeugt,
• eine Trennvorrichtung und eine gemeinsame Rohrleitung und mindestens eine Düsen, wobei diese Komponenten ausgebildet sind zuerst das flüssige synthetische Löschmittel und nachfolgend im Bedarfsfall Wasser oder wasserbasiertes Löschmittel bereitzustellen,
• mindestens einen Ereignismelder, der mit einer Brandmelder- und/oder Löschsteuerzentrale signalleitend verbunden ist zur Erfassung eines Feuersignals, wobei

die Brandmelder- und/oder Löschsteuerzentrale dazu eingerichtet ist, dass sie bei Erfassung eines ersten Feuersignals zum Zeitpunkt t₁ das Ventil ansteuert und öffnet, zum Ausbringen des flüssigen synthetischen Löschmittels aus dem Löschmittelbehälter über die gemeinsame Rohrleitung und die mindestens eine Düsen, und bei Erfassung eines zweiten Feuersignals zum Zeitpunkt t₂ sie zusätzlich die Fördereinrichtung ansteuert, welche das Wasser oder das wasserbasierte Löschmittel über die gemeinsame Rohrleitung und die mindestens eine Düse zur Löschung austrägt.The invention further relates to a device for deleting objects or devices, comprising:

• a first extinguishing agent supply device with a liquid synthetic extinguishing agent in an extinguishing agent container, on which a valve is arranged,
• a second extinguishing agent supply device with in a water reservoir with water or a water-based extinguishing agent, or a water supply device and a conveyor, which generates the volume flow and pressure for the water or the water-based extinguishing agent,
• a separating device and a common pipeline and at least one nozzle, wherein these components are designed first to provide the liquid synthetic extinguishing agent and subsequently, if necessary, water or water-based extinguishing agent,
• at least one event detector, which is signal-connected to a fire alarm and / or extinguishing control center for detecting a fire signal, wherein

the fire alarm and / or extinguishing control center is adapted to actuate and open the valve upon detection of a first fire signal at time t ₁ , for discharging the liquid synthetic extinguishing agent from the extinguishing agent tank via the common pipe and the at least one nozzle, and upon detection a second fire signal at time t _2, it additionally controls the conveyor, which discharges the water or the water-based extinguishing agent via the common pipe and the at least one nozzle for deletion.

In a preferred embodiment of the plant, a liquid synthetic extinguishing agent in at least one closed extinguishing agent container, which are designed as a pressure vessel, superimposed with a pressurized gas, preferably nitrogen stored. A valve closes this container. Pressure monitoring devices monitor the system pressure of these extinguishing agent containers. A drop in the system pressure by a defined predetermined value based on the nominal pressure at 21 ° C is detected via a signal-conducting connection to a fire alarm and / or extinguishing control center as a fault displayed by this center and / or sent to a receiving or reporting device. The valve outlet of this extinguishing agent container is fluidly connected via a check valve and a first supply line with a separator. From the separator, a piping system leads to extinguishing nozzles which are arranged in and around the protective object or the area to be protected or the device to be protected.

The water supply in the second stage of the deletion, in the case of detecting a second fire signal at time t ₂ , either by means of reservoir, or by a water supply device, such as an existing water pipe, for example, from the pipeline of the public water supply. A conveying device, for example a pressure-increasing device, generates the volume flow and pressure required for discharging the water. With pressure monitoring devices and / or level monitoring devices that are signal-related with the fire alarm and / or extinguishing control center, is monitoring the water supply and provision, a falling below a predetermined limit value of the pressure and / or the level by a predefined value is detected by the fire alarm and / or extinguishing control panel and displayed as a fault. Thus, steps can be taken to remedy the fault and bring the extinguishing system back to the ready state.

In the water reservoir, a level monitoring device such as a mechanical float or an electrical level monitoring can be arranged as an ultrasonic measuring system. From the level monitoring device, a signal can be given via electrical lines or via radio to a fire alarm and / or control center.

As a conveying device for the water, it is advantageous to use a pump which is suitable for conveying or for increasing the pressure of liquid media. The drive can be done electrically or pneumatically.
Alternatively, the conveying or the pressure increase of the water can be effected by superposition with pressurized gas, preferably nitrogen.

The separator decouples the flow of the first extinguishing fluid, preferably the liquid synthetic extinguishing agent, from the flow of the second extinguishing fluid, preferably the water or the water-based extinguishing agent, and ensures that there is no mixing of the two extinguishing fluids in the piping and in the distribution pipe network. The separation device is preferably designed as a separation station usual in water extinguishing systems or as a multi-way valve or valve combination for opening and closing the transport paths of the first and second extinguishing fluids, preferably the liquid chemical extinguishing agent and the water or the water-based extinguishing agent.

At the extinguishing agent container for the synthetic extinguishing agent prevents a backflow preventer, preferably a check valve, which in case of malfunction of the separator water enters this extinguishing agent container. When using a water reservoir, it is advantageous here also a backflow preventer, preferably a check valve to install against the ingress of synthetic extinguishing agent.

In another advantageous embodiment, the non-return valve on the extinguishing agent container for the synthetic extinguishing agent and the non-return valve in front of the water reservoir form the separating device. In this case, the valves have the Non-return valve on a signal-conducting connection with the fire alarm and / or extinguishing control center.

The conduits used to convey the liquid synthetic extinguishing agent and the water may be metal, or other suitable refractory materials. The pipelines are preferably designed for the pressure stage of the liquid synthetic extinguishing agent used, preferably 25, 42 or 50 bar. In other advantageous embodiments, any other pressure levels are possible.

An advantageous embodiment of the invention is characterized in that the fire alarm and extinguishing control center is designed and arranged so that it controls the separation device for generating a switching position upon detection of a second fire signal before driving the conveyor, the transport path of the water or the water-based extinguishing agent in the direction of the common pipe and the nozzle and at the same time blocks the transport path of the liquid synthetic extinguishing agent from the first extinguishing agent supply device in the direction of the common pipe to the nozzle.

The advantage is that the inventive solution for the risk level of a normal fire on or in the object to be protected or on or in a device quickly and safely with the first quenching fluid, preferably the liquid synthetic extinguishing agent is deleted. For the risk level of a larger fire or for a reignition or re-flaring of the fire, water or water-based extinguishing agent is extinguished with the second extinguishing fluid, preferably the less expensive extinguishing agent. This significantly reduces the financial outlay compared to extinguishing systems and procedures that use a synthetic extinguishing agent for all risk levels.
Another advantage is that the solution according to the invention offers the possibility of extinguishing with water or water-based extinguishing agent, if in the time to the preparation of the ready state of the first extinguishing agent supply device, ie until after the refilling of the extinguishing agent container with liquid synthetic extinguishing agent, the fire again flares up or a new fire breaks out.

It is advantageous to arrange a plurality of conveyors between the extinguishing agent container and the nozzles and / or between the reservoir for the second extinguishing fluid, preferably for water or water-based extinguishing agent and the nozzles. That's it possible to deploy the extinguishing agent in different protection areas in which an erase operation is to be performed.

It is also advantageous to use a pressure switch, a contact pressure gauge or a pressure sensor with a signal evaluation unit as a pressure monitoring device, which is signal-conducting connected to the fire alarm and / or extinguishing control panel according to the invention.

Instead of an extinguishing agent container for the first extinguishing fluid, preferably liquid synthetic extinguishing agent or storage container for the second extinguishing fluid, preferably water or water-based extinguishing agent, it may be advantageous to arrange a plurality of extinguishing agent container or a plurality of reservoirs.

The solution according to the invention has the advantage that it combines the advantages of an extinguishing system with a first extinguishing fluid, preferably liquid synthetic extinguishing agent with the advantages of a conventional water extinguishing system. This eliminates the disadvantage that systems with liquid synthetic extinguishing agent are not yet suitable for property protection. An additional second extinguishing stage with water or water-based extinguishing agent, the cost of the first extinguishing agent supply device with liquid synthetic extinguishing agent are significantly reduced, with a high level of security and availability of the entire extinguishing system is given. Furthermore, by sharing common piping with distribution pipe network and nozzles for the two different extinguishing agents material and installation costs are saved.

• Erfassung eines ersten Feuersignals zum Zeitpunkt t₁,
• Ansteuerung einer ersten Löschmittelversorgungseinrichtung,
• Erfassung eines zweiten Feuersignals zum Zeitpunkt t₂,
• Ansteuerung einer zweiten Löschmittelversorgungseinrichtung, nach Prüfung durch die Brandmelder- und/oder Löschsteuerzentrale, ob der Zeitpunkt t₂ die Ungleichung (t₁+t_c) < t₂ < (t₁+t_b) erfüllt,

wobei t_c eine Entleerungszeit der vollständigen oder teilweisen Entleerung mindestens eines Löschmittelbehälters der ersten Löschmittelversorgungseinrichtung, t_k eine Kontrollzeit im Anschluss an die Entleerungszeit t_c und t_b eine Überwachungszeitdauer darstellen und die Überwachungszeitdauer t_b ab dem Zeitpunkt t₁ beginnend die Summe der Entleerungszeit t_c und der Kontrollzeit t_k ist.The invention further relates to a method for controlling two extinguishing agent supply devices by a fire alarm and / or extinguishing control center. The method comprises the following preferably consecutively proceeding process steps:

• Detection of a first fire signal at time t ₁ ,
• Activation of a first extinguishing agent supply device,
• Detection of a second fire signal at time t ₂ ,
• Activation of a second extinguishing agent supply device, after checking by the fire alarm and / or extinguishing control center, whether the time t ₂ satisfies the inequality (t ₁ + t _c ) <t ₂ <(t ₁ + t _b ),

where t _{c represents} a discharge time of the complete or partial emptying of at least one extinguishing agent container of the first extinguishing agent supply device, t _{k is} a control time following the discharge time t _c and t _{b is} a monitoring period and the monitoring period t _b starting from the time t ₁ starting the sum of the discharge time t _c and the control time t _k .

In a preferred embodiment of the method, the emptying time t _c is specified as a stored parameter in the fire alarm and / or extinguishing control center or it is calculated at the time t _m > t 1.

In a further embodiment of the method, the discharge time t _c is calculated on the basis of extinguishing fluid parameters of the first extinguishing agent supply device detected by the extinguishing fluid parameter detection means.

• Erfassung der Löschfluidparameter über eine signalleitende Verbindung der Löschfluidparametererfassungsmittel mit der Brandmelder- und/oder Löschsteuerzentrale und
• Speicherung der Löschfluidparameter in der Brandmelder- und/oder Löschsteuerzentrale durchgeführt.

In a further embodiment of the method, the following method steps are also carried out:

• Detecting the extinguishing fluid parameters via a signal-conducting connection of the extinguishing fluid parameter detection means with the fire alarm and / or extinguishing control center and
• Storage of extinguishing fluid parameters performed in the fire alarm and / or extinguishing control center.

• Druck und/oder Temperatur im Löschmittelbehälter,
• Durchflussmenge des Löschfluids in Verbindung mit der erfassten Zeitdauer des Austrags des Löschfluids ab dem Zeitpunkt t₁ ,oder
• Massendifferenz des Löschfluids vor oder zum Zeitpunkt t₁ und zum Zeitpunkt t_m, oder eine Kombination hieraus.

The extinguishing fluid parameters are in particular:

• Pressure and / or temperature in the extinguishing agent container,
• Flow rate of the extinguishing fluid in connection with the detected time duration of the discharge of the extinguishing fluid from the time t ₁ , or
• Mass difference of the extinguishing fluid before or at time t ₁ and at time t _m , or a combination thereof.

In a further preferred embodiment of the method, before the activation of the first extinguishing agent supply device, a control of a separation device, for generating a primary switching position of the separation device (8), the transport path of the first extinguishing fluid, preferably a liquid synthetic extinguishing agent, in the direction of a common pipe and a releases at least one nozzle and the transport path of the second extinguishing fluid, preferably of water or a water-based extinguishing agent from the second extinguishing agent supply device in Direction of the common pipe and the at least one nozzle completely blocked.

Fig. 1

eine Schematische Darstellung einer Löschanlage mit zwei Löschmittelversorgungseinrichtungen, mit einem Löschmittelbehälter mit flüssigem synthetischem Löschmittel und einem Vorratsbehälter für Wasser,

Fig. 2

eine Schematische Darstellung einer Löschanlage mit zwei Löschmittelversorgungseinrichtungen, mit einer Wasserversorgungseinrichtung in der zweiten Löschmittelversorgungseinrichtung,

Fig. 3

stellt schematisch den zeitlichen Ablauf der Verfahrensschritte dar und

Fig. 4

zeigt eine schematische Darstellung der erfindungsgemäßen Brandmelder- und Löschsteuerzentrale.

Further advantageous or expedient features and embodiments of the invention will become apparent from the dependent claims and from the description. Particularly preferred embodiments will be explained in more detail with reference to the drawings.
In the drawings show:

Fig. 1

a schematic representation of an extinguishing system with two extinguishing agent supply facilities, with an extinguishing agent container with liquid synthetic extinguishing agent and a reservoir for water,

Fig. 2

a schematic representation of an extinguishing system with two extinguishing agent supply devices, with a water supply device in the second extinguishing agent supply device,

Fig. 3

schematically illustrates the timing of the process steps and

Fig. 4

shows a schematic representation of the fire alarm and extinguishing control center according to the invention.

The FIG. 4 shows in conjunction with FIG. 1 The inventive fire alarm and / or extinguishing control center and their interaction with the two extinguishing agent supply means, the first extinguishing agent supply means 17, in particular with a liquid synthetic extinguishing agent 14 and the second extinguishing agent supply means 18, preferably a water-based. The fire alarm and / or extinguishing control center has a control unit 24. In the illustrated preferred embodiment, the fire alarm and / or extinguishing control center at least one signal processing unit 25, in particular a microcontroller or a digital signal processor and preferably an operating and display unit 26. Not shown is the memory of the fire alarm and / or extinguishing control center, in which the discharge time t _c , the control time t _k and the monitoring time t _b are stored.

The FIG. 1 shows the schematic representation of the system according to the invention for the deletion of objects and facilities with a first extinguishing agent supply device 17 a first extinguishing fluid, preferably a liquid synthetic extinguishing agent 14, in an extinguishing agent container 1, on which a valve 16 is arranged. The liquid synthetic extinguishing agent is superimposed with nitrogen. The nitrogen superposition pressure is 50 bar.

The second arranged extinguishing agent supply device 18 comprises reservoir with a second extinguishing fluid, preferably a water reservoir 2 with water 3 or a water-based extinguishing agent and a conveyor 7, which generates the volume flow and pressure for the water or the water-based extinguishing agent.

A first feed line 20 directs the liquid synthetic extinguishing agent 14 after opening the valve 16 by the fire alarm and / or extinguishing control center according to the invention to the separator 8 and a common pipe 9 and at least one nozzle 10. In the illustrated embodiment, 3 nozzles are shown in the Schutzberiech 19 are located, in which the object to be protected, the object to be deleted 22 is applied in case of fire with extinguishing agent. The separator 8, the common pipe 9 and the nozzles 10 are formed to first guide the liquid synthetic extinguishing agent 14 and subsequently, if necessary, water 3 or water-based extinguishing agent to the object to be extinguished.

The FIG. 2 shows a variant of the system in which instead of the water storage tank 2, a water supply device 15 is arranged, preferably the public water supply, all other components and arrangements of this embodiment are identical to the in Fig. 1 illustrated plant.

Not shown is also an advantageous embodiment of the system, in which in addition to the water reservoir 2, a water supply device 15 is arranged.

In the protection area 19 two event messages 11 are arranged, which are connected to a fire alarm and / or extinguishing control center 12 via the signal-conducting connection 13. The fire alarm and extinguishing control center 12 is designed and configured such that it controls the valve 16 and opens at the time t ₁ when detecting a first fire signal, for discharging the first extinguishing fluid, preferably the liquid synthetic extinguishing agent 14, with the pressurized nitrogen from the extinguishing agent tank 1. The liquid synthetic extinguishing agent 14 passes through the common pipe 9 and the three nozzles 10 to the extinguishing object 20 in the protection area 19. The common pipe. 9 includes one Distribution pipe network 23, which directs the extinguishing agent to the nozzles 10, which are arranged around the protective object 22 in predefined positions. The predefined positions are determined so that the fire can be extinguished in a very short time with a minimum amount of extinguishing agent.

After complete application of the liquid synthetic extinguishing agent 14 is checked with the event detectors 11, if the fire is extinguished. This is the case if no fire signal is detected via the event detector 11 and the fire alarm and / or extinguishing control center 12 within a monitoring period t _b predetermined from the time t ₁ .

In the case of the detection of a second fire signal at time t ₂ controls the fire alarm and / or extinguishing control center 12 additionally to the conveyor 7, which the second extinguishing fluid, preferably the water 3 or the water-based extinguishing agent, I from the reservoir 2 for the embodiment of Fig. 1 or discharges water from the water supply device 15 via the common pipe 9 and the nozzles 10 for deletion of the object 22 in the protection area 19.

On or in the extinguishing agent container 1, a pressure monitoring device 4 is arranged. The supply of water 3 via a storage container 2, arranged on or in the container level monitoring device 5, or from a water pipe of the public water supply 15 ( Fig. 2 ), also equipped with a pressure monitoring device 4. The necessary pressure and the volume flow for application are achieved by the conveyor 7.

The level monitoring device 5 and pressure monitoring device 4 are signal-conducting, in the illustrated example via the signal-conducting connection 13, preferably designed as an electrical line, connected to the fire alarm and / or control center 12. Pressure and level are detected and monitored by the fire alarm and / or extinguishing control center 12. If predetermined limit values are undershot and / or exceeded, this is sent to a predetermined receiving and / or signaling device. The conveyor 7 generates the required for the discharge of the water 3 volume flow and pressure. The extinguishing agent container 1 with the liquid synthetic extinguishing agent 14 is connected to the separating device 8 via the first supply line 21 and the water-conveying device 7 or the water-based extinguishing agent is connected to the second supply line 22 to the separating device 8. From the separator 8, the common pipe 9 directs the extinguishing agent to the nozzles 10 in the protection area 19. The separator 8 ensures that only one extinguishing agent is in the pipe 9 and the water 3 or the water-based extinguishing agent and the liquid synthetic extinguishing agent 14th kept separate.

Fig. 1 shows that in front of the extinguishing agent supply means 17 and 18, that is downstream of the extinguishing agent supply devices 17, 18 backflow preventer 6 are arranged. They prevent ingress of water 3 or water-based extinguishing agent into the first extinguishing agent supply device 17 and a penetration of the liquid synthetic extinguishing agent 14 in the second extinguishing agent supply means 18. There is a respective backflow preventer 6 between the extinguishing agent container 1 and the separation device 8 and between the conveyor 7 and the Separating device 8 is arranged.

From the separator 8, the pipe 9 leads to the nozzles 10, which apply the liquid synthetic extinguishing agent 14 and, if necessary, the water 3 to the protected object to be deleted 20. The conveyor 7, the valve 16 on the extinguishing agent tank 1, and the separator 8 are connected to their control with the fire alarm and / or extinguishing control center 12 signal-conducting. In the in Fig. 1 and 2 illustrated embodiments, this signaling connection 13 is realized via electrical lines that are monitored by the fire alarm and / or extinguishing control center 12 for wire breakage and / or short circuit to detect malfunction immediately and report. Not shown is the wireless execution version of the signal-conducting connection thirteenth

About this signal-conducting connection 13, the first and second extinguishing agent supply means 17, 18 are driven, ie the valve 16 is driven at a first fire signal, it opens the extinguishing agent tank 1 and at a second fire signal in the predetermined monitoring period t _b , the conveyor 7 is driven. With these controls, the respective extinguishing agent is discharged via the common pipe 9 and the nozzles 10 and the fire is fought on or in the object to be deleted 22.

In the Fig. 1 and Fig. 2 illustrated fire alarm and / or extinguishing control center 12 is designed and arranged so that it controls the separation device 8 in the event of detection of a second fire signal at time t ₂ before driving the second extinguishing agent supply means 18, for generating a switching position of the separation device 8, which the transport path of the second quenching fluid, preferably of the water 3 or of the water-based quenching agent, in the direction of the common pipeline 9 and the nozzles 10 releases and the transport path of the first quenching fluid, preferably the liquid synthetic extinguishing agent 14, from the first extinguishing agent supply means 17 in the direction of the common pipe 9 and the nozzles 10 completely blocked.

This switching position of the separator is the secondary switching position of the separator 8, since the second stage of deletion with the second extinguishing fluid, preferably with water 3 or water-based extinguishing agent only in case of need, if the first stage of deletion with the first extinguishing fluid, preferably with the liquid synthetic extinguishing agent 14, has not led to the deletion and a second fire signal has been detected.

The fire alarm and / or extinguishing control center 12 is further configured and arranged to perform a control of the separation device 8 to generate a switching position of the separation device 8, which the transport path of the first extinguishing fluid, preferably the liquid synthetic extinguishing agent 14 prior to the activation of the first extinguishing agent supply means 17 , in the direction of the common pipe 9 and the at least one nozzle 10 releases and completely blocks the transport path of the second extinguishing fluid, preferably the water 3 or the water-based extinguishing agent from the second extinguishing agent supply device 18 in the direction of the common pipe 9 and the at least one nozzle 10. This switching position of the separating device is the primary switching position of the separating device 8, since the first stage of the deletion with the first quenching fluid, preferably the liquid synthetic extinguishing agent 14, takes place. This activation of the separating device 8 can be omitted if it is already in this primary switching position before the activation of the first extinguishing agent supply device 17.

After the liquid synthetic extinguishing agent 14 has been applied, the remaining nitrogen flows and removes all residues of the synthetic extinguishing agent 14 from the pipeline 9. Thus, after the activation of the first extinguishing agent supply device 17 and before the activation of the second extinguishing agent supply device 18, a rinsing of the common pipe 9 and the at least one nozzle 10 with a gas, in this embodiment with nitrogen.

In Fig. 3 schematically shows the timing of the method steps of a particularly preferred embodiment of the method according to the invention using two different liquid extinguishing agents 3, 14, which are provided by two separate extinguishing agent supply means 17, 18 via a separator 8 and a common pipe 9 and at least one nozzle 10, shown. Here, the first extinguishing agent supply device 17, a first extinguishing fluid, preferably a liquid synthetic extinguishing agent 14, preferably in an extinguishing agent container 1, and the second extinguishing agent supply means 18 in one Reservoir the second extinguishing fluid, preferably in a water reservoir 2 or from a water supply device 15 water 3 or water-based extinguishing agent ready.

At time t ₁ , a first fire signal is detected by at least one event detector 11 and a fire alarm and / or extinguishing control center 12. As a result, the activation of the first extinguishing agent supply device 17 by the fire alarm and / or extinguishing control center 12 for discharging the first extinguishing fluid 14 via the separating device 8, the common pipe 9 and the at least one nozzle 10.

In the case of the detection of a second fire signal at time t ₂ , the activation of the second extinguishing agent supply device 18 and the second extinguishing fluid, preferably the water 3 or the water-based extinguishing agent is via the separator 8, the common pipe 9 and the at least one nozzle 10 for deletion discharged.

The control of the second extinguishing agent supply device 18 takes place in this case only if the time t ₂ after complete or partial emptying of the extinguishing medium container 1, after expiry of the discharge time t _c is, however, within a monitoring period t _b, wherein the monitoring period of time t _b from the time t ₁ starting from the sum of the emptying time t _c and a control time t _k , wherein the control time t _k is following the emptying time t _c and in this time t _k the fire alarm and / or extinguishing control center (12) checks whether a fire signal is detected and the time t ₂ satisfies the inequality (t ₁ + t _c ) <t ₂ <(t ₁ + t _b ).

List of reference numbers used

1

Extinguishing agent container 1 for liquid synthetic extinguishing agent

2

Reservoir for water or water-based extinguishing agent

3

Water or water-based extinguishing agent

4

Pressure monitoring device

5

Level monitoring device

6

Backflow preventer

7

Conveyor

8th

separating device

9

Common pipeline

10

jet

11

event detector

12

Fire alarm and / or extinguishing control center

13

signal-conducting connection

14

liquid synthetic extinguishing agent

15

Water supply

16

Valve

17

first extinguishing agent supply device

18

second extinguishing agent supply device

19

the scope

20

First supply line

21

Second supply line

22

object to be deleted

23

Distribution pipe network

24

control unit

25

Signal processing unit, preferably microcontroller or digital signal processor

26

Display and control unit

27

programming

28

Extinguishing fluid parameter detection means

Claims (17)

1. Fire alarm and/or extinguishing control panel for actuating two extinguishing agent supply devices by a control unit (24), wherein the control unit (24) is configured to actuate a first extinguishing agent supply device (17) when a first fire signal is detected at the time t₁, characterized in that the control unit (24) is furthermore configured to actuate a second extinguishing agent supply device (18) when a second fire signal is detected at the time t₂, if it has examined whether the inequality (t₁+t_c)<t₂<(t₁+t_b) is satisfied at the time t₂, where t_c represents a discharge time for complete or partial discharge of at least one extinguishing agent container (1) of the first extinguishing agent supply device (17), t_k represents a checking time following the discharge time t_c and t_b represents a monitoring duration, and wherein the monitoring duration t_b is the sum of the discharge time t_c and the checking time t_k, starting from the time t₁.
2. Fire alarm and/or extinguishing control panel according to Claim 1, wherein the programming stored in a signal processing unit (25) of the control unit has a test module, which generates a signal for actuating the second extinguishing agent supply device when the second fire signal is detected at the time t₂, if the test module determines that the time t₂ satisfies the inequality (t₁+t_c)<t₂<(t₁+t_b).
3. Fire alarm and/or extinguishing control panel according to Claim 1 or 2, wherein the fire alarm and/or extinguishing control panel has a memory and furthermore comprises a programming interface which is embodied and configured in such a way that the discharge time t_c, the checking time t_k and the monitoring duration t_b are stored in the memory by way of the programming interface using a programming and/or configuration means.
4. Fire alarm and/or extinguishing control panel according to Claim 3, wherein the programming and/or configuration means constitute a personal computer, a tablet computer, a notebook, a smartphone or a service or programming tool.
5. Fire alarm and/or extinguishing control panel according to one of Claims 1 to 4, wherein it furthermore has a display and operating unit (26) and it is configured in such a way that the discharge time t_c, the checking time t_k and the monitoring duration t_b parameters can be entered and/or modified, additionally or exclusively, by way of operating elements of the display and operating unit.
6. Fire alarm and/or extinguishing control panel according to one of Claims 1 to 5, wherein the fire alarm and/or extinguishing control panel furthermore is embodied and configured in such a way that it actuates a separation apparatus (8), prior to actuating the first extinguishing agent supply device (17), for the purposes of generating a primary switch position of the separation apparatus (8) which releases the transport path of a first extinguishing fluid, preferably a liquid synthetic extinguishing agent (14), in the direction of a common pipe (9) and an at least one nozzle (10) and completely blocks the transport path of a second extinguishing fluid, preferably water (3) or a water-based extinguishing agent, from the second extinguishing agent supply device (18) in the direction of the common pipe (9) and the at least one nozzle (10).
7. Fire alarm and/or extinguishing control panel according to one of Claims 1 to 6, wherein the fire alarm and/or extinguishing control panel is embodied and configured in such a way that, if it detects the second fire signal at the time t₂, it actuates the separation apparatus (8), prior to actuating the second extinguishing agent supply device (18), for the purposes of generating a secondary switch position of the separation apparatus (8) which releases the transport path of the second extinguishing fluid, preferably water (3) or the water-based extinguishing agent, in the direction of the common pipe (9) and the nozzles (10) and completely blocks the transport path of the first extinguishing fluid, preferably the liquid synthetic extinguishing agent (14), from the first extinguishing agent supply device (17) in the direction of the common pipe (9) and the nozzles (10).
8. Fire alarm and/or control panel according to one of Claims 1 to 7, wherein it is furthermore embodied to switch off, at the time t₁ or after a predetermined delay ta following this, the power supply of the machine, system or device to be extinguished.
9. Fire alarm and/or extinguishing control panel according to one of the preceding claims, wherein it is embodied to forward all switch and operating states to predefined reception devices, in particular building management systems.
10. Fire alarm and/or control panel according to one of Claims 1 to 9, wherein it has a signal-conducting connection to extinguishing fluid parameter detection means (28) for detecting extinguishing fluid parameters of the first extinguishing agent supply device (17) and it is furthermore embodied to calculate the discharge time t_c at a time t_m>t₁ on the basis of the extinguishing fluid parameters.
11. Fire alarm and/or control panel according to Claim 10, wherein the following are detected as extinguishing fluid parameters:

    • pressure and/or temperature in the extinguishing agent container,

    • flow rate of the extinguishing fluid in conjunction with the detected duration of discharge of the extinguishing fluid after the time t₁, or

    • mass difference in the extinguishing fluid prior to, or at, the time t₁ and at the time t_m, or a combination therefrom.
12. Method for controlling two extinguishing agent supply devices by way of a fire alarm and/or extinguishing control panel, wherein a first extinguishing agent supply device (17) is actuated after a first fire signal is detected at the time t₁,
    characterized in that the method furthermore comprises the following method steps preferably being carried out in succession:

    • detecting a second fire signal at the time t₂,

    • actuating a second extinguishing agent supply device (18) after an examination is carried out by the fire alarm and/or extinguishing control panel as to whether the time t₂ satisfies the inequality (t₁+t_c<t₂<(t₁+t_b),

    where t_c represents a discharge time for complete or partial discharge of at least one extinguishing agent container (1) of the first extinguishing agent supply device (17), t_k represents a checking time following the discharge time t_c and t_b represents a monitoring duration, and wherein the monitoring duration t_b is the sum of the discharge time t_c and the checking time t_k, starting from the time t₁.
13. Method according to Claim 12, characterized in that the discharge time t_c is predetermined as a stored parameter in the fire alarm and/or extinguishing control panel or it is calculated at the time t_m>t₁.
14. Method according to Claim 13, characterized in that the discharge time t_c is calculated on the basis of extinguishing fluid parameters of the first extinguishing agent supply device, detected by means of extinguishing fluid parameter detection means (28).
15. Method according to Claim 14, furthermore characterized by the following method steps: detecting the extinguishing fluid parameters by way of a signal-conducting connection between the extinguishing fluid parameter detection means and the fire alarm and/or extinguishing control panel and storing the extinguishing fluid parameters in the fire alarm and/or extinguishing control panel.
16. Method according to Claim 15, characterized in that the extinguishing fluid parameters represent

    • pressure and/or temperature in the extinguishing agent container,

    • flow rate of the extinguishing fluid in conjunction with the detected duration of discharge of the extinguishing fluid after the time t₁, or

    • mass difference in the extinguishing fluid prior to, or at, the time t₁ and at the time t_m, or a combination therefrom.
17. Method according to one of Claims 12 to 16, characterized in that there is actuation of a separation apparatus (8), prior to actuating the first extinguishing agent supply device (17), for the purposes of generating a primary switch position of the separation apparatus (8) which releases the transport path of the first extinguishing fluid, preferably a liquid synthetic extinguishing agent, in the direction of a common pipe (9) and an at least one nozzle (10) and completely blocks the transport path of the second extinguishing fluid, preferably water (3) or a water-based extinguishing agent, from the second extinguishing agent supply device (18) in the direction of the common pipe (9) and the at least one nozzle (10).

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