EP2907546B1 - Trigger unit for extinguishing devices - Google Patents

Description

The invention relates to a triggering unit for extinguishing devices for triggering an extinguishing agent flow in the direction of a connected to a power supply fire area, with a first actuating device, which is switchable between a release position in which the power supply is released, and an interruption position in which the power supply is interrupted , and a second actuator which is switchable between a release position in which the extinguishant flow is released, and a rest position, and a coupling unit which is movable between an operating position and an erasing position and permanently couples the switching of the first actuator and the second actuator ,

The invention further relates to an extinguishing device for extinguishing fires with a triggering unit for triggering an extinguishing agent flow, a drive means cartridge for providing propellant and an extinguishing agent supply.

Such tripping units and extinguishing equipment find use, for example, in commercial kitchens. Legal requirements and guidelines as well as the constantly increasing demands of the operators of industrial commercial kitchens on the extinguishing systems require a continuous development of the system components in order to meet the required standards.

An effective fire fighting can often only be done if in addition to the application of an extinguishing agent also the power to the equipment used, such as the gas supply to a gas-powered kitchen stove, is interrupted. As extinguishing agents, for example, water, chemical extinguishing agents, foam-forming extinguishing agents and extinguishing gases such as nitrogen, argon, CO ₂ , extinguishing gas mixtures and other extinguishing media such as powder extinguishing agents and aerosol extinguishing agents are used in known extinguishing systems.

Known stationary extinguishing systems, which have mechanical tripping units, regularly have a clamping device in order to bias a movable element. In case of fire, a trigger mechanism causes the pre-stressed Element moves due to the acting restoring force and thus actuates a release device such that an erase operation is initiated. Such a trip unit is for example off DE 20 2011 104 314 U1 known.
Other extinguishing systems have several clamping devices, which must be stretched during commissioning of the extinguishing system under great effort to ensure the interruption of energy supply and the initiation of the extinguishing agent flow in the direction of the fire area in case of fire, see US 6,286,604 ,
This means that when starting such extinguishing systems several clamping operations are carried out before the extinguishing system is ready for operation. The correct execution of the individual clamping operations is essential for the function of the extinguishing systems and represents a potential source of error.
Furthermore, known extinguishing systems due to the need for multiple clamping mechanisms on a complex mechanism. This complex mechanics, in conjunction with a high number of parts, leads to high production costs, in particular to high costs in final assembly. Furthermore, the separate clamping mechanisms lead to an increased risk of component failure, so that the reliability of the extinguishing systems is also adversely affected by the separate clamping mechanisms.
Another disadvantage of known extinguishing systems or tripping units lies in the requirement of a high expenditure of force in order to carry out the clamping operations for commissioning the installations. This is particularly the case when manufacturers use bias springs with high spring stiffness in the biasing mechanisms. Known solutions lack suitable force-displacement ratios in order to reduce the effort required to commission the equipment.
The object underlying the invention is therefore to be seen in providing a trip unit and a quenching device, which at least partially overcome the disadvantages described above. In particular, the invention has the object to reduce the steps required to start up a fire extinguishing to minimize the potential for error in commissioning a fire extinguishing system, as well as to provide a trip unit and a fire extinguishing device, which can be put into operation with a reduced effort.

The object underlying the invention is achieved in a first aspect by means of a trip unit of the type mentioned above, wherein the trip unit comprises a clamping element which is so connected force-transmitting with the coupling unit that always results in a movement of the coupling unit from a change in the clamping state of the clamping element ,

The invention makes use of the knowledge that by means of a coupling unit and a suitable interaction of coupling unit and clamping element, the dependence of individual actuators can be resolved by separate clamping mechanisms.

The tensioning element is configured to store energy, preferably potential energy. A change in the clamping state of the clamping element leads to a change in the energy stored in the clamping element. At least parts of the clamping element are preferably designed as elastically deformable, so that a change in the clamping state is associated with a change in shape of these parts.

The energy supply connected to the fire area, which can be released and interrupted by the first actuating device, comprises, for example, the supply of a flammable fluid and / or the supply of electrical power. By means of the supply of the above-described types of energy can be a variety of different cookers such as electric stoves, gas stoves, or electric / gas combination systems operate. A fire area can be understood, for example, as an area of a canteen kitchen in which the stove top / hearth flame is arranged, and where accordingly an extinguishing device should be operated with a trip unit according to the invention.

After commissioning of the trip unit according to the invention, the extinguishing agent flow is interrupted in the rest position of the second actuator before the first triggering. By switching the second actuator from the rest position to the release position, the extinguishing agent flow is released. In a subsequent switching of the second actuator from the release position to the rest position, the extinguishing agent flow is not necessarily interrupted again.

In a first preferred embodiment of the trip unit according to the invention, the coupling of the first actuator with the second actuator is such that in the operating position of the coupling unit, the first actuator in the release position and the second actuator in the Rest is. In contrast, in the deletion position of the coupling unit, the first actuating device in the interrupted position and the second actuating device in the release position.

The mobility of the coupling unit is preferably achieved in that the coupling unit is designed as a cylindrical piston or bolt, which is movably guided, in particular linearly displaceable on the support structure of the trip unit. By means of a linear method within a guide on the support structure, the coupling unit can thus be moved between the operating position and the deletion position.

Alternatively, the coupling unit is pivotally mounted in a further preferred embodiment of the support structure of the trip unit. In such an embodiment, the movement between the operating position and the deletion position would be executable by a rotation of the coupling unit.

It should be understood that in the release position of the second actuator, the extinguishant flow can both be initiated and maintained.

The first actuator cooperates preferably with a valve or switch or has a valve or switch as actuator to release the gas supply for a gas stove in the release position and to interrupt in the open position, this gas supply by a suitable valve or switch position. Alternatively, the first actuating device can cooperate with a switch or have a switch as an actuating element, which is set up to release or interrupt an electrically conductive connection. Such an actuator would find application, for example, in the use of the trip unit according to the invention in conjunction with an electric cooker system.

In a preferred embodiment of the tripping unit according to the invention, the clamping element brings in the operating position of the coupling unit a restoring force on the coupling unit in the direction of the extinguishing position. Preferably, the tensioning element has a spring, in particular compression spring. In particular, coil springs with a cylindrical design, which are arranged in alignment with the coupling unit on the support structure of the trip unit, are preferred. Alternatively, the spring in the context of the invention may be formed as a coil spring, torsion spring, spiral spring, air spring, gas spring or elastomer spring. All of these types of springs have in common the characteristic that they can be used as storage of potential energy. The stored potential energy is in triggering the trip unit in Motion energy converted, which is transmitted to the coupling unit and thus leads to a movement of the coupling unit.

Preferably, the trip unit according to the invention has a holding and clamping mechanism, which is adapted to receive the restoring force of the clamping element in the operating position of the coupling unit. By means of the holding and clamping mechanism and the clamping element can thus be biased, the coupling unit. The holding and clamping mechanism holds the coupling unit in the operating position, while the clamping element applies a restoring force in the direction of the deletion position on the coupling unit. The bias of the coupling unit requires only a suitable initiation, namely a loss of the abutment force for the bias, such as a loss of traction in the holding and clamping mechanism to release movement and thus to realize a movement of the coupling unit from the operating position to the extinguishing position. In the extinguishing position of the coupling unit, the clamping element has a lower potential energy than in the operating position of the coupling unit, so that the clamping element can still be in a tensioned state even in the extinguishing position. Furthermore, in the extinguishing position, the tensioning element can also be in an unstressed state.

Particularly preferred is a trip unit whose holding and clamping mechanism comprises a cable, wherein the cable is connected via a deflection with the coupling unit. Due to the deflection of the cable, a first leg of the cable and a second leg of the cable arise. The deflection may for example be designed as a roller which is rotatably mounted on the coupling unit. The axis on which the deflection can rotate is preferably formed as a pin, which is connected to the coupling unit. Consequently, the deflection in the process of the coupling unit between the operating position and the deletion position also undergoes a change in position which corresponds to that of the coupling unit. The deflection has in particular lateral flanks, so that a secure guidance of the cable is guaranteed.

In a further preferred embodiment of the trip unit according to the invention, the holding and clamping mechanism on a holding member which is fixed to a first end of the cable. The holding member is configured to release the cable when reaching or exceeding a fire limit value or when applying an electrical deactivation signal, caused by a fire alarm signal. A fire alarm signal is detected and / or triggered by fire detectors and / or a fire alarm and / or extinguishing control panel when one or more Fire characteristic limit values are exceeded and / or changes in one or more fire characteristics that characterize a fire or an emerging fire can be detected by appropriate evaluation algorithms. The fire detector, or the fire alarm and / or extinguishing control center or a control unit then generate an electrical deactivation signal, which is transmitted via a signal-conducting connection to the holding member.

As fire characteristic in the context of the invention, for example, temperature values are to be understood. Furthermore, comes as a fire characteristic aerosol concentration into consideration, so that depending on a smoke development of the cable can be released. Further parameters may be radiation values, in particular infrared radiation values or ultraviolet radiation values, or gas concentrations. The release of the cable as a function of a limit exceeding a gas concentration also allows the cable release depending on chemical decomposition products. As long as one or more fire limit values are not exceeded or no deactivation signal is applied, a tensile force applied to the holding and tensioning mechanism can be maintained. If one or more fire limit values are exceeded in the event of a fire, or if a fire alarm signal has been triggered, the cable is released. Preferably, the holding member is designed as a thermal isolator, which is destructible under the action of a temperature increase in the event of a fire. If the holding member is designed as a thermal isolator, the cable is released by the destruction of the thermal isolator. The destruction of the thermal isolator is caused by the exceeding of a temperature limit. The force applied to the holding and tensioning mechanism can thus no longer be transmitted through the cable. As a result, the holding and tensioning mechanism can no longer absorb the return force applied by the tensioning element to the coupling unit. This leads to a method of the coupling unit from the operating position to the extinguishing position. The resulting actuations of the first actuating device and the second actuating device interrupt the energy supply, for example the gas supply, and initiate an extinguishing agent flow in the direction of the fire region connected to the energy supply and consequently at least temporarily maintain it. Alternatively or additionally, the cable used can also have one or more thermal isolators or be formed partially or completely from a material which is destroyed when a temperature limit is exceeded.

In a further advantageous embodiment of the invention, the holding member comprises a magnetic holding element and a deactivatable permanent magnet. The magnetic holding element adheres to the deactivatable permanent magnet. The retaining element is attached to a first end of the cable or it is part of the cable, preferably the cable end. The deactivatable permanent magnet is preferably connected to a fixed part, eg a wall or the support structure of the trip unit.

In the case of a fire or a fire, an electrical deactivation signal is generated by a fire alarm signal and the permanent magnet is deactivated. Deactivation is understood to mean the cancellation of the magnetic field of the permanent magnet or its weakening, so that the holding element adhering to the permanent magnet is released, and thus also the cable pull. This leads to a method of the coupling unit as described when destroying a designed as a thermal isolator holding member. The electrical deactivation signal is preferably designed as a voltage signal which is applied to e.g. a coil is applied, which causes the demagnetization or attenuation of the magnetic field of the electrically deactivatable permanent magnet. The coil is arranged on the permanent magnet.

It may also be advantageous that the electrically deactivatable permanent magnet is signal-conducting connected to a fire detector, a sensor or a control center. In advantageous embodiments, the control center, for example, a fire alarm system, a fire alarm and extinguishing control center, a delete control center or a control center represent.

Furthermore, it is preferred that the holding and clamping mechanism of the release unit has a stationary and rotatably mounted winding on which the cable is attached and wound up and unwound. It is particularly preferred that the winding is accessible from the outside and manually operable. Thus, for example, after triggering the trip unit of the holding and clamping mechanism can be re-tensioned by winding the cable. By winding the cable of the holding and clamping mechanism, the coupling unit can be moved again from the deletion position to the operating position after triggering the trip unit. Due to the coupling with the first actuating device and the second actuating device also takes place at the same time their circuit. In this case, the first actuating device when winding the cable or when clamping the holding and clamping mechanism is switched from the interruption position to the release position and the second actuator switched from the release position to the rest position. Thus, in a simple manner a triggered trip unit can be brought back into a tensioned state.

In a further preferred embodiment of the tripping unit according to the invention, the first actuating device comprises a cable pull, which is fastened to the coupling unit. In combination with the cable of the holding and clamping mechanism, the deflection and the winding of the cable of the first actuator forms a pulley. Thus, the force required to bias the tension member can be significantly reduced. The commissioning of a deletion device with such a trip unit is thus simplified.

The trip unit according to the invention is preferably further developed in that the holding and clamping mechanism has a locking element which is movable between a locking position and a release position. In the blocking position of the locking element, the rotational movement of the winding is locked. In the release position of the locking element, the rotational movement of the winding is released. Thus, by a movement of the locking element, the winding can be detected, so that a force applied to the cable tensile force can be transmitted. In contrast, the cable can not transmit traction when the locking element is in the release position and thus the winding is released. When a loading of the cable of the holding and tensioning mechanism with a tensile force, it comes to a unwinding of the cable from the winding.

A further embodiment of the tripping unit according to the invention has a second clamping element, which preferably has a spring, in particular a torsion spring. The second clamping element brings a restoring force in the direction of the locking position on the blocking element. Consequently, if no further force acts on the blocking element, this is held in the blocking position by means of the second clamping element, so that the winding is locked. If the second clamping element is designed as a torsion spring, this transmits a restoring moment to the blocking element.

Preferably, the holding and clamping mechanism of the trip unit comprises at least one, preferably two, three or four manual release devices. By means of the manual release means, the locking device is movable by manual actuation from the locking position to the release position. The release devices allow a triggering of the trip unit by a manual intervention. Thus, an operator can trigger the trip unit regardless of the cable release of the holding member or the destruction of a thermal isolator. In particular, in situations where a fire is no longer preventable, but a fire effect has not yet occurred so far that the holding member releases the cable, such manual release devices can lead to an accelerated extinguishment of a fire. Even with a possible malfunction of the holding member or other individual components, the discharge of extinguishing agent in the direction of a fire area and the interruption of the power supply can be achieved manually. The fire safety is thereby further increased.

In a further embodiment of the trip unit according to the invention, a driver is attached to a portion of the cable of the holding and tensioning mechanism and coupled to the locking element, that upon release of the first end of the cable, the blocking element is moved from the locking position to the release position. If, for example, a thermal separation element fastened to the first end of the cable pull is destroyed by exceeding a temperature limit in the event of a fire, this end is released so that the carrier is moved by the prestressed coupling unit and thus the blocking element coupled to the carrier moves from the blocking position into the release position is moved and thus releases the wraps.

In a particularly preferred embodiment of the trip unit according to the invention, the blocking element is designed as a rocker. The rocker has a first leg and a second leg. The first leg of the rocker can interact with the driver while the second leg of the rocker cooperates with the winding.

It is further preferred that the second actuating device comprises an actuating arm, which is preferably mounted rotatably about a stationary point. In a method of the coupling unit between the operating position and the deletion position is preferably carried out a rotational movement of the actuating arm of the second actuator to this fixed point.

Particularly preferably, the actuating arm is arranged on a receiving and distributing unit. The receiving and distributing unit preferably comprises an internal thread into which a driving means cartridge can be screwed in and thus connected. By an actuating mechanism, which is coupled to the actuating arm of the second actuator, can release the stored under pressure in the Antriebmittelpatrone drive means. The release of the drive means is preferably carried out via an interaction of the actuating arm with an opening means of the actuating mechanism, which is adapted to open the shutter of the drive means cartridge. The opening means is moved or moved by the rotational movement of the actuating arm from a passive position to an actuating position such that the closure of the drive means cartridge is acted upon in the actuated position of the opening means with a compressive force. When a Druckkraftschwellwertes is exceeded, the Triebmittelpatrone opened and thus gives the stored under pressure Leavening agent, preferably compressed air or pressurized CO ₂ or N ₂ . Preferably, the actuating mechanism comprises a return spring cooperating with the opening means, the restoring force of which acts on the opening means such that the opening means is always moved in the direction of the passive position as soon as the position of the actuating arm allows it. The opening means may be formed in particular as a needle. If the opening means is designed as a needle, there is no interruption of the extinguishing agent flow when the second actuating device is switched from the release position into the rest position. Further, however, other actuators come into question as opening means. For example, the opening means may be configured as a button operation, so that the actuation generates a switching signal for opening an on / off valve. Such an embodiment allows the interruption of the extinguishing agent flow when switching the second actuator from the release position to the rest position. The receiving and distributing unit preferably also has one or more outlets, which are coupled to the drive means cartridge in such a way that a distribution of the propellant flow to several lines can take place. If the trip unit is used in combination with an extinguishing device, the leavening means is passed through conduits to one or more extinguishant reservoirs so that an extinguishant flow can be initiated and thus an extinguishant flow is initiated in the direction of a fire area. The initiation of the extinguishing agent flow is carried out by an increase in pressure within the extinguishing agent supply, which is caused by the drive means. The leavening means directed into the extinguishant supply through the line (s) drives the extinguishing agent from the extinguishant supply through another line system to one or more dispensing units. The dispensing units have one or more dispensing nozzles which deliver the extinguishing agent to the fire area.

The extinguishing agent supply preferably comprises at least one closed container and an extinguishing agent stored therein. Upon release of the propellant in the release position of the second actuator, a pressure builds up in the at least one container by the introduced pressurized propellant and the extinguishing agent is driven from the at least one container via fluid-conducting connections towards at least one application unit and deployed above the source of the fire.

In a further preferred embodiment of the tripping unit according to the invention, the actuating arm has a guide which interacts with the coupling unit such that a rotation of the coupling unit results from a movement of the coupling unit Actuating arm results around the fixed point. Preferably, the guide has a slot in which a pin of the coupling unit is movable.

The object underlying the invention is achieved in a second aspect by a quenching device of the type mentioned, wherein the trip unit is formed according to one of the preferred embodiments described above. With regard to the advantages of such an extinguishing device, reference is made to the comments on the embodiments of the tripping unit according to the invention.

Further, the object underlying the invention is achieved by a kitchen with an extinguishing device for extinguishing fires, wherein the extinguishing device is as described above, in particular having a trip unit according to one of the preferred embodiments described above.

Fig. 1

eine Ausführungsform einer erfindungsgemäßen Auslöseeinheit;

Fig. 2

eine Detailansicht der Auslöseeinheit aus Fig. 1;

Fig. 3

eine Ausführungsform einer erfindungsgemäßen Löscheinrichtung;

Fig. 4

eine Detailansicht der Aufnahme- und Verteilereinheit aus Fig.1; und

Fig. 5

eine Detailansicht von Teilen der Auslöseeinheit aus Fig. 1.

In the following the invention will be explained in more detail by means of examples and figures. Show it:

Fig. 1

an embodiment of a trip unit according to the invention;

Fig. 2

a detailed view of the trip unit Fig. 1 ;

Fig. 3

an embodiment of an extinguishing device according to the invention;

Fig. 4

a detailed view of the receiving and distributing unit Fig.1 ; and

Fig. 5

a detailed view of parts of the trip unit Fig. 1 ,

According to Fig. 1 the trip unit 1, a support structure 2, on which a first actuator 3 and a second actuator 5 are arranged. The first actuating device 3 comprises a cable pull which is connected to an actuating element 4 designed as a valve actuation. The valve actuation switches a gas valve, which is connected to a gas source, to supply gas to a gas stove. The first actuating device 3 is connected by a fastening of the cable with the coupling unit 7. The coupling unit 7 is further coupled to the actuating arm 31 of the second actuator. The actuating arm 31 cooperates with a receiving and distributing unit 35 to release the driving means stored in the driving means cartridge 37 in the event of triggering of the triggering unit 1. A pin 43 on the coupling unit 7 transmits the movement of the coupling unit 7 on the actuating arm 31 of the second actuator 5. The trip unit 1 also has a tensioned cable 13. A first part of the cable 13 is fastened at a first end to a holding member 15 designed as a thermal separating member and at a second end to a winding 19. A second part of the cable 13 is attached at a first end to the support member 15 and at a second end to a stationary device (not shown). The winding 19 is just like a acting on the winding 19 locking element 21 rotatably mounted on the support structure 2 of the trip unit 1. The locking element 21 locks in the illustrated blocking position, the winding 19 and thus prevents a rotational movement for winding or unwinding of the cable 13. The cable 13, the winding 19, the locking element 21 and the support member, designed here as a thermal isolator 15, are parts of the holding - And clamping mechanism which receives in the illustrated operating position of the coupling unit 7, the force applied by the spring 9 to the coupling unit 7 restoring force in the direction of the extinguishing position. On the cable 13, a driver 27 is further attached, which in the event of destruction of the thermal isolator 15, the locking member 21 would rotate from the lock position shown in a release position, so that due to the force applied by the spring 9 to the coupling unit 7 restoring force unwinding of the cable 13 would take place when the coupling unit 7 is moved from the illustrated operating position to the extinguishing position. The driver 27 is further designed and arranged such that a small elongation of the cable 13, for example due to temperature fluctuations, does not lead to a rotation of the locking element 21. Thus, an unintentional triggering of the trip unit due to temperature fluctuations is prevented. In a method of the coupling unit 7 in a guide of the support structure 2 from the operating position to the extinguishing position further, the first actuator 3 is switched from a release position to an open position and the second actuator 5 from a rest position to a release position. In the rest position of the second actuating device 5, the extinguishing agent supply connected to the triggering unit is closed, so that extinguishing agent is prevented from escaping from the extinguishing agent supply. The coupling unit 7 or the actuating arm 31 is monitored by a signal transmitter 32, so that further follow-up actions can be initiated when the trip unit 1 is triggered by means of a suitable signal generation of the signal generator. The signal generator 32 may be configured, for example, to detect contact with the actuating arm 31 and generate a signal depending on the contact status. Initiable follow-up actions can be, for example, a signal transmission to a fire alarm or extinguishing control center, an alarm triggering or the switching of a solenoid valve, which initiates further extinguishing actions.

Fig. 2 shows a detail of the in Fig. 1 The tripping unit 7 and the spring 9 are arranged in the guide of the support structure 2, wherein the spring 9 is formed as a helical spring and rests on its first end face against a stop on the support structure 2 and on its second end face on the coupling unit. The coupling unit 7 also has a deflection 14, through which the cable 13 can be divided into a first leg 13a and a second leg 13b. Further, a pin 43 is fixed to the coupling unit 7, by means of which the cable 29 of the first actuator 3 is attached to the coupling unit 7. The pin 43 protrudes through the slot 41 of the actuating arm 31 and through the slot 42 of the support structure 2 of the trip unit 1. The actuating arm 31 is pivotally mounted or rotatable about the stationary point 33 on the receiving and distributing unit 35. The receiving and distributing unit 35 is screwed to a fixed arm on the support structure 2 via screw connections 36a, 36b. The receiving and distributing unit 35 has an internal thread 38 for receiving a drive means cartridge 37. Further, an actuating mechanism is disposed within the receiving and distributing unit 35, which can release the drive means from the drive means cartridge 37 by a pivoting movement of the actuating arm 31. The operating mechanism has an opening means for opening the shutter of the drive means cartridge 37. On the opening means acts a return spring, which applies a restoring force on the opening means. The opening means may be formed as a needle. The released drive means is distributed via the connections 40a, 40b to lines which guide the drive means to an extinguishant supply. The leavening agent initiates an extinguishing agent flow in the following. The representation in Fig. 2 further shows that the second leg 13b of the cable 13 attached to the winding 19 and that the cable 13 is partially wound up on this. The winding 19 has a roll pin 20. The tensioning pin 20 is accessible from the outside and allows manual winding and unwinding of the cable 13 on the winding 19. The winding 19 is locked in the illustrated configuration by the blocking element 21, so that a rotational movement of the winding 19 is prevented by the blocking element 21 , The blocking element 21 has a first leg 22a and a second leg 22b. On the second leg 22b of the locking element 21 there is a notch, which engages in a circumferential screening in the winding 19. Die Ausnehmung ist in der Ausnehmung in der Wickel 19 angeordnet. On the second leg 22b a cable 26 is further attached, which leads to one or more manual release devices to trigger the trip unit 1 also manually. On the first leg 22a of the locking element 21, a recess 28 formed as an elongated hole is arranged through which the first leg 13a of the cable pull 13 extends. Further, on the first leg 22a of the locking element 21 is a driver 27, which is attached to the cable 13. The cables of the first actuating device 3, the manual release devices and the cable to the support member 15 are each at least partially encased with a cable sheath 17a, 17b, 17c, 17d. The cable sheaths 17a, 17b, which the cable pull the encase manual release devices lead from the support structure 2 of the trip unit 1 to mounting sockets. These mounting sockets can be fastened, for example, to the housing of a quenching device. The cable sheathing 17c, which surrounds the cable to the holding member 15, leads from the support structure 2 to another mounting bushing. This mounting sleeve can also be attached to the housing of the extinguishing device. The cable sheath 17d, which surrounds the cable pull of the first actuating device 3, leads from the carrier structure 2 to a further fastening bushing (not shown), which, for example, can likewise be fastened to the housing of the extinguishing device.

Fig. 3 shows an inventive extinguishing device 100, which the trigger unit 1 from Fig. 1 and Fig. 2 includes. In the housing 47 of the extinguishing device 100, an extinguishing agent supply 45 is disposed in addition to the trip unit 1. The extinguishing agent supply 45 is connected via a line 49 to the receiving and distributing unit 35, to which a drive means cartridge 37 is connected. In the case of triggering of the trip unit 1, the drive means is released from the drive means cartridge 37 and passed through the receiving and distributing unit 35 and through the line 49 into the extinguishing agent supply 45. The extinguishing agent supply is located in a closed container, in which now builds up a pressure by the pressurized propellant and the extinguishing agent is driven out of the container. As a result, an extinguishing agent flow is initiated, which is passed through the main distribution line 51 to a dispensing unit. Such dispensing units, preferably designed as nozzles, are set up to extinguish a fire in a fire area by means of the extinguishing agent.

In the Fig. 4 shown triggering and distribution unit 35 is fastened via screw connections 36a, 36b to a fixed arm of the support structure 2. The actuating arm 31 is pivotally mounted about the fixed point 33. By means of the pivoting movement, the actuating arm can be moved into a rest position and into a release position. In the illustrated rest position, the closure of the drive means cartridge 37 is closed. Upon a rotational movement of the actuating arm 31 from the rest position to the release position, the opening means 30 designed as a needle is moved along its longitudinal axis in the direction of the closure of the drive means cartridge 37. If the pressure exerted by the opening means 30 on the shutter of the drive means cartridge 37 exceeds a threshold value, the closure is opened and thus the release of the drive means stored under pressure in the drive means cartridge 37 occurs. The released drive means is passed via connections 40a to lines (not shown) which guide the drive means to an extinguishant supply. The Drive medium cartridge 37 is screwed by a thread 38 with the receiving and distributing unit 35.

Fig. 5 shows parts of the trip unit 1. The rotatably mounted on the support structure 2 and designed as a rocker locking element 21 has a first leg 22a and a second leg 22b. The first leg 22a has a recess 28 designed as a slot. Through the recess 28 of the legs 13a of the cable 13 extends to the cable a driver 27 is fixed, which is dimensioned such that it can not be performed by the recess 28. Further, the driver 27 is arranged on the leg 13a, that between the driver 27 and the driver 27 facing outer surface of the locking element 21 is set a distance. The distance between the driver 27 and the locking element 21 is necessary so that at relatively small changes in length of the cable 13, which can be caused for example by heating the cable 13, not directly a rotation of the locking element 21 takes place. If there is release of the cable 13, for example, by destroying a connected to the cable thermal isolation member (not shown), the driver 27 comes into contact with the locking element 21 and causes rotation of the locking element 21 from the lock position shown to a release position. By moving the locking element 21 from the locking position to the release position, the winding 19 is released such that a rotational movement of the winding is no longer blocked by the blocking element 21. The blocking element 21 is further coupled to a spring 23, which applies a restoring moment in the direction of the blocking position to the blocking element 21. The spring 23 is connected via a spring engagement 24 with the support structure 2 of the trip unit 1. In order for a rotational movement of the locking element 21 from the locked position into the release position, the torque which is transmitted from the driver 27 to the blocking element 21 must therefore be greater than the restoring moment, which is transmitted from the return spring 23 to the blocking element 21.

Claims (19)

1. A trigger unit (1) for extinguishing devices for triggering an extinguishing medium flow in the direction of a fire zone that is connected to an energy supply, comprising
   a first actuating device (3) that can be switched between a release position, in which the energy supply is released, and an interrupt position, in which the energy supply is interrupted, and
   a second actuating device (5) that can be switched between a release position, in which the extinguishing medium flow is released, and an idle position,
   characterized by a coupling unit (7) that can be moved between an operating position and an extinguishing position and permanently couples switching of the first actuating device (3) and of the second actuating device (5) to one another, and by
   a tensioning element that is connected to the coupling unit (7) in a force-transmitting manner in such a way that a change of the tensioning state of the tensioning element always results in a motion of the coupling unit (7).
2. The trigger unit (1) according to claim 1,
   characterized in that the first actuating device (3) is in the release position and the second actuating device (5) is in the idle position in the operating position of the coupling unit, and in that the first actuating device (3) is in the interrupt position and the second actuating device (5) is in the release position in the extinguishing position of the coupling unit.
3. The trigger unit (1) according to claim 1 or 2,
   characterized in that the tensioning element exerts a restoring force upon the coupling unit (7) in the direction of the extinguishing position in the operating position of the coupling unit (7), wherein the tensioning element preferably comprises a spring (9).
4. The trigger unit (1) according to claim 3,
   characterized by a holding and tensioning mechanism (11) that is designed for absorbing the restoring force of the tensioning element in the operating position of the coupling unit (7).
5. The trigger unit (1) according to claim 4,
   characterized in that the holding and tensioning mechanism (11) comprises a cable pull (13), wherein the cable pull (13) is connected to the coupling unit (7) via a deflection element (14).
6. The trigger unit (1) according to claim 5,
   characterized in that the holding and tensioning mechanism (11) comprises a holding member (15), which is fastened on a first end of the cable pull (13), wherein the holding member (15) is designed for releasing the cable pull (13) when a fire parameter limiting value is exceeded or when a deactivation signal is applied, and wherein the holding member (15) is preferably realized in the form of a thermal separation member that can be destroyed under the influence of a temperature increase in case of a fire.
7. The trigger unit (1) according to one of claims 5-6,
   characterized in that the holding and tensioning mechanism (11) comprises a stationary and rotatably mounted reel (19), on which the cable pull (13) is fastened with a second end, wherein the cable pull can be wound on and unwound from said reel.
8. The trigger unit (1) according to claim 7,
   characterized in that the first actuating device (3) comprises a cable pull (29), which is fastened on the coupling unit (7) and forms a pulley block together with the cable pull (13), the deflection element (14) and the reel (19).
9. The trigger unit (1) according to claim 7 or 8,
   characterized in that the holding and tensioning mechanism (11) comprises a locking element (21), which can be moved between a locking position and a release position, wherein the rotational motion of the reel is locked in the locking position and the rotational motion of the reel is released in the release position.
10. The trigger unit (1) according to claim 9,
    characterized by a second tensioning element that exerts a restoring force upon the locking element (21) in the direction of the locking position, wherein the second tensioning element preferably comprises a spring (23), particularly a torsion spring.
11. The trigger unit (1) according to claim 9 or 10,
    characterized in that the holding and tensioning mechanism (11) comprises at least one manual release device, preferably two, three or four manual release devices, by means of which the locking device (21) can be moved from the locking position into the release position.
12. The trigger unit (1) according to one of claims 9-11,
    characterized in that a catch (27) is fastened on a section of the cable pull (13) and coupled to the locking element (21) in such a way that the locking device (21) is moved from the locking position into the release position when the first end of the cable pull (13) is detached.
13. The trigger unit (1) according to one of claims 9-12,
    characterized in that the locking element (21) is realized in the form of a rocker.
14. The trigger unit (1) according to one of the preceding claims,
    characterized in that the second actuating device (5) comprises an actuating arm (31), which is preferably mounted so as to be rotatable about a stationary point (33) .
15. The trigger unit (1) according to claim 14,
    characterized in that the actuating arm (31) is arranged on a receiving and distributing unit (35) for a propellant cartridge (37).
16. The trigger unit (1) according to claim 15,
    characterized in that the actuating arm (31) comprises a guide (39), which interacts with the coupling unit (7) in such a way that a motion of the coupling unit (7) results in a rotation of the actuating arm (31) about the stationary point (33).
17. The trigger unit (1) according to claim 16,
    characterized in that the guide (39) comprises an oblong hole (41), in which a pin (43) of the coupling unit (7) can be displaced.
18. An extinguishing device (100) for extinguishing fires, comprising a trigger unit (1) for triggering an extinguishing medium flow, a propellant cartridge (37) for making available propellant and an extinguishing medium reservoir (45),
    characterized in that the trigger unit (1) is realized in accordance with one of claims 1-17.
19. A kitchen with an extinguishing device (100) for extinguishing fires,
    characterized in that the extinguishing device is realized in accordance with claim 18.

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