EP0766581B1 - Fire extinguishing system with at least two spraying heads - Google Patents

Fire extinguishing system with at least two spraying heads Download PDF

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Publication number
EP0766581B1
EP0766581B1 EP95920700A EP95920700A EP0766581B1 EP 0766581 B1 EP0766581 B1 EP 0766581B1 EP 95920700 A EP95920700 A EP 95920700A EP 95920700 A EP95920700 A EP 95920700A EP 0766581 B1 EP0766581 B1 EP 0766581B1
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EP
European Patent Office
Prior art keywords
control
piston
control piston
spray head
chamber
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EP95920700A
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German (de)
French (fr)
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EP0766581A1 (en
Inventor
Arthur Eisenbeiss
Josef Kraml
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Hainzl Industriesysteme & Co KG GmbH
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Hainzl Industriesysteme & Co KG GmbH
Hainzl Industriesysteme & Co KG GmbH
Hainzl Industriesysteme & GmbH
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Application filed by Hainzl Industriesysteme & Co KG GmbH, Hainzl Industriesysteme & Co KG GmbH, Hainzl Industriesysteme & GmbH filed Critical Hainzl Industriesysteme & Co KG GmbH
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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C35/00Permanently-installed equipment
    • A62C35/58Pipe-line systems
    • A62C35/68Details, e.g. of pipes or valve systems
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C37/00Control of fire-fighting equipment
    • A62C37/08Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers

Definitions

  • the invention relates to an extinguishing system with at least two spray heads, each with a pressurized water connection, with a distribution chamber, from the distribution channels go out to spray nozzles, and with one the pressure water passage from Pressurized water connection to the control chamber, spring-loaded and via at least one control device controllable control piston are provided, the can be acted upon on both sides via two cylinder chambers, one of which is the cylinder chamber to pressurize the piston in the opening direction on the one hand with the pressurized water connection and on the other hand via a throttle line in the control piston to the other cylinder chamber communicates
  • control piston In known spray heads (WO 93/10861), the control piston is supported on one Glass break protection as a control device against which he uses a load spring is pressed. In order to overload the glass breakage protection according to the Spring load and the pressure water acting in the same direction To avoid the control piston, the control piston is on both sides over two cylinder chambers acted upon, of which the cylinder chamber for piston loading in the opening direction not only with the pressurized water connection, but also with the other Cylinder chamber is connected, via a throttle line in the control piston, so that in the closed position of the control piston via the throttle line Pressure equalization in the two cylinder rooms. The opposite action of the control piston is thus canceled, which is therefore only by the spring is pressed against the glass break safety device in the opening direction.
  • the invention is therefore based on the object of an extinguishing system with at least two spray heads of the type described at the beginning with simple constructional means to improve so that a simple control of at least one spray head from another spray head is possible.
  • the invention solves the problem in that the spray heads one over the Control device openable drain line for the cylinder chamber for piston loading in the closing direction and a control piston spring-loaded in the closing direction have and that at least the control piston of a spray head via a depending on the position of the control piston of the other spray head Control line is controllable.
  • the respective - Spray head can be operated via various control devices, because only this Drain line must be opened to reduce pressure in the associated Cylinder chamber with the result of ensuring that the control piston is pressurized with water on the opposite side because of the pressure drop is adjusted in the opening direction in the throttle line. Because with the drain line closed in the two cylinder rooms the same but in opposite directions on the Control piston builds up pressure and therefore the risk of accidental Adjustment of the control piston not supported by a control device in the opening direction there is, the load spring of the control piston must be in the closing direction act and an opening movement of the control piston when the drain line is closed prevent.
  • Opening the drain line does not require the control device to be arranged to actuate the spray head on this itself, so that it becomes possible Fire detectors, for example a glass break protection regardless of the attachment to provide the spray head without proper operation of the Endanger spray head.
  • the spray head can also be operated by two or several control devices that are only opening a drain line. This makes versatile control one Extinguishing system equipped with such spray heads possible because, for example Several spray heads can also be controlled via a control device.
  • the drain line of the spray head to be controlled can a control device, for example a valve, can be opened.
  • the control this control device required control line can be used as an electrical control signal line be formed, the one of the control piston of the controlling Spray head actuated switch is actuated when the control valve for the Drain line of the controlled spray head z. B. from an electromagnetic valve consists.
  • the control line can also be through a hydraulic line Actuation of a valve adjustable via a piston are formed, whereby an application via the distribution chamber of the controlling spray head is recommended.
  • control piston at least one spray head an additional piston surface for a piston action has in the direction of opening and that the associated cylinder space a hydraulic control line is connected, via which the control piston against the force of its load spring is opened.
  • This control line can in turn the distribution chambers of adjacent spray heads are connected, so that at Actuation of a spray head the corresponding connected neighboring Spray heads are also operated, but with their own pressurized water supply. Therefore you only need control lines and no pressurized water supply lines additionally to be relocated, what the installation effort of this Extinguishing systems significantly simplified.
  • control line can be provided with a suction valve, that with the piston adjustment a suction of water or air in the with the piston adjustment enlarging cylinder space allowed.
  • the spray system shown has two spray heads 1a and 1b, one below the other are equally trained.
  • Each of these spray heads 1a and 1b has a pressurized water connection 2 and a distribution chamber 3 provided with the pressurized water connection 2 is connected via a cylinder bore 4, which the distribution chamber 3rd interspersed and on the side facing away from the pressurized water connection 2 in one expanded cylinder space 5 opens.
  • this cylinder bore 4 is a control piston 6 used, the overflow channels at its end facing the pressurized water connection 2 7 forms that from an adjustment of the control piston 6 from the drawn Closed position in an open position a pressure water passage from Allow pressurized water connection 2 to distribution chamber 3. From the distribution chamber 3 the pressurized water can then flow via distributor channels 8 to spray nozzles 9.
  • the pressure connection 2 forms a cylinder chamber 10 for the control piston 6 Piston action in the opening direction.
  • This cylinder space 10 is opposite Cylinder chamber 5 through a throttle line passing through the control piston 6 11 connected, the throttling effect by a corresponding throttle 12 is determined.
  • About the throttle line 11 thus results in the closed Control piston 6 a pressure equalization in the cylinder chambers 10 and 5, so that after outside only the closing force of the loading spring 13 acts on the control piston 6, the itself on a screw-in base 14 penetrated by the control piston 6 for the cylinder space 5 supports. So that the control piston 6 from the drawn closed position into a passage that releases from the pressurized water connection 2 to the distribution chamber 3 Open position can be moved, it is necessary to adjust the pressure in the cylinder chamber 5 dismantle.
  • At least one drain line 15 is provided, which can be opened by a control device 16. If one of the provided drain lines 15 opened via the associated control device 16, so the pressure in the cylinder chamber 5 drops, which with an axial adjustment of the Control piston 6 against the force of the load spring 13 due to the now one-sided Actuation is connected via the cylinder space 10. That is the way for the pressurized water to the spray nozzles 9 from the pressurized water connection 2 via the Distribution chamber 3 and the distribution channels 8 free.
  • the control devices 16 can be constructed differently. According to the The illustrated embodiment is next to one held in a housing 17 Glass breakage protection 18 an electromagnetically actuated control valve 19 is provided, which, like the glass breakage protection device 18, blocks the associated drain line 15, as long as the control valve 19 is not opened or the glass break safety device 18 is not breaks what an opening of the control piston 6 in the manner described of its pressurized water. To function properly of the respective spray head 1a, 1b can also be checked by the control valve 19 can be opened by hand.
  • the control piston 6 can have an additional piston surface 20 in a cylinder space 21, which is connected to a control line 22. Since the Control piston 6 are acted upon via this piston surface 20 in the opening direction can, the spray head can also be controlled via the control line 22 if the application pressure applied via the control line causes a piston displacement allowed against the load spring 13, because of the throttle line 11 results in a pressure medium compensation between the cylinder spaces 5 and 10.
  • This Hydraulic control line 22 can, for example, with the distribution chamber 3 of the adjacent spray head 1b to be connected in response to this adjacent Spray head 1b a forced actuation of the connected Ensure spray head.
  • the intended for this in the spray heads 1a and 1b from the distribution chamber 3 outgoing control line is in the embodiment 23 designated. If the control lines 23 and 22 are not used, their can Connections are closed with plugs.
  • the cylinder space 21 would be a Prevent adjustment of the control piston 6 if not for an afterflow of the Pressure medium or for ventilation is provided.
  • the Control line 22 connected to a suction valve 24, via which, if necessary Cylinder chamber 20 is ventilated. Since this suction valve 24 as a check valve acts, is the piston adjustment via the control line through this Nachsaugventil 22 not affected.
  • the invention is of course not based on the illustrated embodiment limited.
  • the solenoid valve 16 could also be via an electrical signal line are controlled via a by the control piston 6 of the spray head 1b actuated switch is applied, which in turn controls the control piston 6 of the spray head 1 a depending on the position of the control piston 6 of the spray head 1b allowed.
  • the control line 23 can also be connected to such a control valve be connected.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Nozzles (AREA)

Abstract

A fire extinguishing system has at least two spraying heads (1a, 1b) provided each with a pressurised water connection (2), a distribution chamber (3), from which distribution channels (8) extend to spraying nozzles (9), and a spring-loaded control piston (6) that controls the flow of pressurised water from the pressurised water connection (2) to the distribution chamber (3) and that may be driven by at least one controller through two cylinder chambers (5, 10) located on both sides of the control piston (6). The cylinder chamber (10) for moving the piston in the opening direction is in communication on the one hand with the pressurised water connection (2) and on the other hand with the other cylinder chamber (5) through a throttle line (11) arranged in the control piston (6). In order to create advantageous control conditions for the spraying heads, the spraying heads (1a, 1b) have one emptying line (15) for the cylinder chamber (10) that may be opened by the controller (16) to move the piston in the closing direction, and one control piston (6) loaded by a spring in the closing direction. The control piston (6) of at least one spraying head (1a) may be driven by the control line (23) depending on the position of the control piston (6) of the other spraying head (1b).

Description

Die Erfindung bezieht sich auf eine Löschanlage mit wenigstens zwei Sprühköpfen, die je mit einem Druckwasseranschluß, mit einer Verteilerkammer, von der Verteilerkanäle zu Sprühdüsen ausgehen, und mit einem den Druckwasserdurchtritt vom Druckwasseranschluß zur Verteilerkammer steuernden, federbeaufschlagten und über wenigstens eine Steuereinrichtung ansteuerbaren Steuerkolben versehen sind, der über zwei Zylinderräume beidseitig beaufschlagbar ist, von denen der Zylinderraum zur Kolbenbeaufschlagung im Öffnungssinn einerseits mit dem Druckwasseranschluß und anderseits über eine Drosselleitung im Steuerkolben mit dem anderen Zylinderraum in Verbindung stehtThe invention relates to an extinguishing system with at least two spray heads, each with a pressurized water connection, with a distribution chamber, from the distribution channels go out to spray nozzles, and with one the pressure water passage from Pressurized water connection to the control chamber, spring-loaded and via at least one control device controllable control piston are provided, the can be acted upon on both sides via two cylinder chambers, one of which is the cylinder chamber to pressurize the piston in the opening direction on the one hand with the pressurized water connection and on the other hand via a throttle line in the control piston to the other cylinder chamber communicates

Bei bekannten Sprühköpfen (WO 93/10861) stützt sich der Steuerkolben an einer Glasbruchsicherung als Steuereinrichtung ab, gegen die er mit Hilfe einer Belastungsfeder gedrückt wird. Um eine Überlastung der Glasbruchsicherung zufolge der Federbelastung und der gleichsinnig wirkenden Druckwasserbeaufschlagung des Steuerkolbens zu vermeiden, ist der Steuerkolben beidseitig über zwei Zylinderräume beaufschlagbar, von denen der Zylinderraum zur Kolbenbeaufschlagung im Öffnungssinn nicht nur mit dem Druckwasseranschluß, sondern auch mit dem anderen Zylinderraum in Verbindung steht, und zwar über eine Drosselleitung im Steuerkolben, so daß sich in der Schließstellung des Steuerkolbens über die Drosselleitung ein Druckausgleich in den beiden Zylinderräumen einstellt. Die gegensinnige Beaufschlagung des Steuerkolbens hebt sich somit auf, der daher lediglich durch die Feder im Öffnungssinn gegen die Glasbruchsicherung gedrückt wird. Wird der Stellweg des Steuerkolbens aufgrund eines Bruches der Glasbruchsicherung freigegeben, so leitet die Belastungsfeder des Steuerkolbens dessen Öffnungsbewegung ein, der durch das vom Druckwasseranschluß in die Verteilerkammer strömenden Druckwasser aufgrund der in diesem Bereich größeren Kolbenfläche dann rasch geöffnet wird. Nachteilig bei diesen bekannten Sprühköpfen ist, daß eine Ansteuerung des Sprühkopfes eine Zerstörung der Glasbruchsicherung zwingend voraussetzt und daher nicht unter Umgehung der Glasbruchsicherung über andere Steuereinrichtungen eingeleitet werden kann. Außerdem ist die Glasbruchsicherung zwingend am Sprühkopf selbst vorzusehen und kann nicht unabhängig vom Sprühkopf an für eine Feuerüberwachung oft günstigeren Stellen mit Abstand vom Sprühkopf angeordnet werden.In known spray heads (WO 93/10861), the control piston is supported on one Glass break protection as a control device against which he uses a load spring is pressed. In order to overload the glass breakage protection according to the Spring load and the pressure water acting in the same direction To avoid the control piston, the control piston is on both sides over two cylinder chambers acted upon, of which the cylinder chamber for piston loading in the opening direction not only with the pressurized water connection, but also with the other Cylinder chamber is connected, via a throttle line in the control piston, so that in the closed position of the control piston via the throttle line Pressure equalization in the two cylinder rooms. The opposite action of the control piston is thus canceled, which is therefore only by the spring is pressed against the glass break safety device in the opening direction. If the travel of the Control piston released due to a break in the glass breakage protection, so conducts the loading spring of the control piston whose opening movement by the pressure water flowing from the pressurized water connection into the distribution chamber the larger piston area in this area is then opened quickly. A disadvantage of these known spray heads is that a control of the spray head Destruction of the glass break protection is mandatory and therefore not under Bypass of the glass break protection initiated via other control devices can be. In addition, the glass breakage protection is mandatory on the spray head itself and cannot be used independently of the spray head for fire monitoring often more favorable places at a distance from the spray head.

Um beim Ansprechen der Glasbruchsicherung eines Sprühkopfes einer mehrere Sprühköpfe umfassenden Löschanlage zumindest die benachbarten Sprühköpfe ebenfalls zu betätigen, werden die Verteilerkammern bekannter Sprühköpfe miteinander durch Druckleitungen verbunden, so daß diese Verteilerkammern unter Umgehung des Steuerkolbens von jenem Sprühkopf mit Druckwasser versorgt werden, dessen Glasbruchsicherung ausgelöst wurde. Nachteilig bei einer solchen Druckwasserversorgung der jeweils benachbarten Sprühköpfe ist, daß die Sprühköpfe mit zusätzlichen Druckleitungen aufwendig verbunden werden müssen. Ähnliche Nachteile treten auf, wenn über die Verteilerkammern der über eine Glasbruchsicherung auslösbaren Sprühköpfe ein Steuerkolben eines Steuerventiles mit Druckwasser beaufschlagt werden soll, um durch eine Verstellung des Steuerventiles beim Auslösen der Glasbruchsicherung eines dieser Sprühköpfe zusätzliche Sprühköpfe an eine Druckwasserpumpe anzuschließen (WO 93/10860), weil auch in diesem Fall zumindest die Sprühköpfe mit den Glasbruchsicherungen durch zusätzliche Druckleitungen mit dem Steuerventil zu verbinden sind.In order to trigger the glass breakage protection of a spray head one more Extinguishing system comprising spray heads at least also the neighboring spray heads to operate, the distribution chambers known spray heads together connected by pressure lines so that these distribution chambers bypassing of the control piston are supplied with pressurized water by that spray head, the Glass break protection was triggered. A disadvantage of such a pressurized water supply of the adjacent spray heads is that the spray heads with additional Pressure lines have to be connected in a complex manner. Similar disadvantages occur on, if it can be triggered via a glass break safety device via the distribution chambers Spray heads acted upon a control piston of a control valve with pressurized water to be by adjusting the control valve when the glass break safety device is triggered one of these spray heads additional spray heads to a pressurized water pump to connect (WO 93/10860), because in this case too at least Spray heads with the glass break safety devices through additional pressure lines with the Control valve are to be connected.

Der Erfindung liegt somit die Aufgabe zugrunde, eine Löschanlage mit wenigstens zwei Sprühköpfen der eingangs geschilderten Art mit einfachen konstruktiven Mitteln so zu verbessern, daß eine einfache Ansteuerung zumindest eines Sprühkopfes von einem anderen Sprühkopf aus möglich wird.The invention is therefore based on the object of an extinguishing system with at least two spray heads of the type described at the beginning with simple constructional means to improve so that a simple control of at least one spray head from another spray head is possible.

Die Erfindung löst die gestellte Aufgabe dadurch, daß die Sprühköpfe eine über die Steuereinrichtung öffenbare Entleerungsleitung für den Zylinderraum zur Kolbenbeaufschlagung im Schließsinn und einen im Schließsinn federbelasteten Steuerkolben aufweisen und daß zumindest der Steuerkolben des einen Sprühkopfes über eine in Abhängigkeit von der Stellung des Steuerkolbens des anderen Sprühkopfes beaufschlagbare Steuerleitung ansteuerbar ist.The invention solves the problem in that the spray heads one over the Control device openable drain line for the cylinder chamber for piston loading in the closing direction and a control piston spring-loaded in the closing direction have and that at least the control piston of a spray head via a depending on the position of the control piston of the other spray head Control line is controllable.

Aufgrund der Ansteuerung des Steuerkolbens über eine Entleerungsleitung im Bereich des Zylinderraumes zur Kolbenbeaufschlagung im Schließsinn kann der jeweilige - Sprühkopf über verschiedene Steuereinrichtungen betätigt werden, weil lediglich diese Entleerungsleitung geöffnet werden muß, um einen Druckabbau im zugehörigen Zylinderraum mit der Folge sicherzustellen, daß der Steuerkolben über die Druckwasserbeaufschlagung auf der gegenüberliegenden Seite wegen des Druckabfalles in der Drosselleitung im Öffnungssinn verstellt wird. Da bei geschlossener Entleerungsleitung sich in den beiden Zylinderräumen ein gleicher aber gegensinnig auf den Steuerkolben wirkender Druck aufbaut und daher die Gefahr einer unbeabsichtigten Verstellung des nicht über eine Steuereinrichtung abgestützten Steuerkolbens im Öffnungssinn besteht, muß die Belastungsfeder des Steuerkolbens im Schließsinn wirken und eine Öffnungsbewegung des Steuerkolbens bei geschlossener Entleerungsleitung verhindern.Due to the control of the control piston via a drain line in the area of the cylinder chamber to act upon the piston in the closing direction, the respective - Spray head can be operated via various control devices, because only this Drain line must be opened to reduce pressure in the associated Cylinder chamber with the result of ensuring that the control piston is pressurized with water on the opposite side because of the pressure drop is adjusted in the opening direction in the throttle line. Because with the drain line closed in the two cylinder rooms the same but in opposite directions on the Control piston builds up pressure and therefore the risk of accidental Adjustment of the control piston not supported by a control device in the opening direction there is, the load spring of the control piston must be in the closing direction act and an opening movement of the control piston when the drain line is closed prevent.

Das Öffnen der Entleerungsleitung verlangt keine Anordnung der Steuereinrichtung zum Betätigen des Sprühkopfes an diesem selbst, so daß es möglich wird, einen Brandmelder, beispielsweise eine Glasbruchsicherung unabhängig von der Anbringung des Sprühkopfes vorzusehen, ohne eine ordnungsgemäße Betätigung des Sprühkopfes zu gefährden. Die Betätigung des Sprühkopfes kann außerdem von zwei oder mehreren Steuereinrichtungen veranlaßt werden, die ja lediglich das Öffnen einer Entleerungsleitung bewirken müssen. Damit ist eine vielseitige Steuerung einer mit solchen Sprühköpfen ausgerüsteten Löschanlage möglich, weil beispielsweise über eine Steuereinrichtung auch mehrere Sprühköpfe angesteuert werden können. Außerdem ergibt sich eine vorteilhafte Ansteuerung eines Sprühkopfes über einen anderen Sprühkopf, dessen Steuerkolben im Öffnungssinn verstellt wurde, weil die Steuerkolbenstellung erfaßt und über eine Steuerleitungsbeaufschlagung zum Ansteuern des Steuerkolbens eines oder mehrerer anderer Sprühköpfe ausgenützt werden kann.Opening the drain line does not require the control device to be arranged to actuate the spray head on this itself, so that it becomes possible Fire detectors, for example a glass break protection regardless of the attachment to provide the spray head without proper operation of the Endanger spray head. The spray head can also be operated by two or several control devices that are only opening a drain line. This makes versatile control one Extinguishing system equipped with such spray heads possible because, for example Several spray heads can also be controlled via a control device. In addition, there is an advantageous control of a spray head via a another spray head, the control piston of which was adjusted in the opening direction because the Control piston position detected and via a control line application for control the control piston of one or more other spray heads can be.

Zu diesem Zweck kann die Entleerungsleitung des anzusteuernden Sprühkopfes über eine Steuereinrichtung, beispielsweise ein Ventil, geöffnet werden. Die zur Ansteuerung dieser Steuereinrichtung erforderliche Steuerleitung kann als elektrische Steuersignalleitung ausgebildet sein, die über einen vom Steuerkolben des steuernden Sprühkopfes betätigbaren Schalter beaufschlagt wird, wenn das Steuerventil für die Entleerungsleitung des angesteuerten Sprühkopfes z. B. aus einem Elektromagnetventil besteht. Die Steuerleitung kann aber auch durch eine hydraulische Leitung zur Betätigung eines über einen Kolben verstellbaren Ventils gebildet werden, wobei sich eine Beaufschlagung über die Verteilerkammer des steuernden Sprühkopfes empfiehlt.For this purpose, the drain line of the spray head to be controlled can a control device, for example a valve, can be opened. The control this control device required control line can be used as an electrical control signal line be formed, the one of the control piston of the controlling Spray head actuated switch is actuated when the control valve for the Drain line of the controlled spray head z. B. from an electromagnetic valve consists. The control line can also be through a hydraulic line Actuation of a valve adjustable via a piston are formed, whereby an application via the distribution chamber of the controlling spray head is recommended.

Eine weitere vorteilhafte Möglichkeit kann dadurch erzielt werden, daß der Steuerkolben zumindest eines Sprühkopfes eine zusätzliche Kolbenfläche für eine Kolbenbeaufschlagung im Öffnungssinn aufweist und daß der zugehörige Zylinderraum an eine hydraulische Steuerleitung angeschlossen ist, über die der Steuerkolben gegen die Kraft seiner Belastungsfeder geöffnet wird. Diese Steuerleitung kann wiederum mit den Verteilerkammern benachbarter Sprühköpfe verbunden werden, so daß bei der Betätigung eines Sprühkopfes die entsprechend angeschlossenen benachbarten Sprühköpfe ebenfalls betätigt werden, allerdings mit der ihnen eigenen Druckwasserversorgung. Es brauchen daher nur Steuerleitungen und keine Druckwasserversogungsleitungen zusätzlich verlegt zu werden, was den Installationsaufwand dieser Löschanlagen wesentlich vereinfacht.Another advantageous possibility can be achieved in that the control piston at least one spray head an additional piston surface for a piston action has in the direction of opening and that the associated cylinder space a hydraulic control line is connected, via which the control piston against the force of its load spring is opened. This control line can in turn the distribution chambers of adjacent spray heads are connected, so that at Actuation of a spray head the corresponding connected neighboring Spray heads are also operated, but with their own pressurized water supply. Therefore you only need control lines and no pressurized water supply lines additionally to be relocated, what the installation effort of this Extinguishing systems significantly simplified.

Damit der Zylinderraum für eine zusätzliche hydraulische Ansteuerung des Steuerkolbens dessen Verstellung bei einer Ansteuerung über eine Entleerungsleitung nicht behindern kann, kann die Steuerleitung mit einem Nachsaugventil versehen werden, das bei der Kolbenverstellung ein Nachsaugen von Wasser oder Luft in den sich mit der Kolbenverstellung vergrößernden Zylinderraum erlaubt.So that the cylinder space for an additional hydraulic control of the control piston its adjustment is not when activated via a drain line can hinder, the control line can be provided with a suction valve, that with the piston adjustment a suction of water or air in the with the piston adjustment enlarging cylinder space allowed.

In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt, und zwar wird ein erfindungsgemäße Löschanlage mit zwei Sprühköpfen in einem schematischen Blockschaltbild gezeigt.The subject matter of the invention is shown in the drawing, for example is an extinguishing system according to the invention with two spray heads in a schematic Block diagram shown.

Die dargestellte Sprühanlage weist zwei Sprühköpfe 1a und 1b auf, die untereinander gleich ausgebildet sind. Jeder dieser Sprühköpfe 1a und 1b ist mit einem Druckwasseranschluß 2 und einer Verteilerkammer 3 versehen, die mit dem Druckwasseranschluß 2 über eine Zylinderbohrung 4 verbunden ist, die die Verteilerkammer 3 durchsetzt und auf der vom Druckwasseranschluß 2 abgekehrten Seite in einem erweiterten Zylinderraum 5 mündet. In diese Zylinderbohrung 4 ist ein Steuerkolben 6 eingesetzt, der an seinem dem Druckwasseranschluß 2 zugekehrten Ende Überströmkanäle 7 bildet, die bei einer Verstellung des Steuerkolbens 6 aus der gezeichneten Schließstellung in eine Öffnungsstellung einen Druckwasserdurchtritt vom Druckwasseranschluß 2 zur Verteilerkammer 3 erlauben. Aus der Verteilerkammer 3 kann dann das Druckwasser über Verteilerkanäle 8 zu Sprühdüsen 9 strömen.The spray system shown has two spray heads 1a and 1b, one below the other are equally trained. Each of these spray heads 1a and 1b has a pressurized water connection 2 and a distribution chamber 3 provided with the pressurized water connection 2 is connected via a cylinder bore 4, which the distribution chamber 3rd interspersed and on the side facing away from the pressurized water connection 2 in one expanded cylinder space 5 opens. In this cylinder bore 4 is a control piston 6 used, the overflow channels at its end facing the pressurized water connection 2 7 forms that from an adjustment of the control piston 6 from the drawn Closed position in an open position a pressure water passage from Allow pressurized water connection 2 to distribution chamber 3. From the distribution chamber 3 the pressurized water can then flow via distributor channels 8 to spray nozzles 9.

Der Druckanschluß 2 bildet für den Steuerkolben 6 einen Zylinderraum 10 zur Kolbenbeaufschlagung im Öffnungssinn. Dieser Zylinderraum 10 ist mit dem gegenüberliegenden Zylinderraum 5 durch eine den Steuerkolben 6 durchsetzende Drosselleitung 11 verbunden, wobei die Drosselwirkung durch eine entsprechende Drossel 12 bestimmt wird. Über die Drosselleitung 11 ergibt sich somit bei geschlossenem Steuerkolben 6 ein Druckausgleich in den Zylinderräumen 10 und 5, so daß nach außen nur die Schließkraft der Belastungsfeder 13 auf den Steuerkolben 6 wirkt, die sich an einem vom Steuerkolben 6 durchsetzten Einschraubboden 14 für den Zylinderraum 5 abstützt. Damit der Steuerkolben 6 aus der gezeichneten Schließstellung in eine den Durchtritt vom Druckwasseranschluß 2 zur Verteilerkammer 3 freigebende Offenstellung verschoben werden kann, ist es notwendig, den Druck im Zylinderraum 5 abzubauen. Zu diesem Zweck ist wenigstens eine Entleerungsleitung 15 vorgesehen, die durch eine Steuereinrichtung 16 geöffnet werden kann. Wird eine der vorgesehenen Entleerungsleitungen 15 über die zugehörige Steuereinrichtung 16 geöffnet, so fällt der Druck im Zylinderraum 5 ab, was mit einer axialen Verstellung des Steuerkolbens 6 gegen die Kraft der Belastungsfeder 13 aufgrund der nunmehr einseitigen Beaufschlagung über den Zylinderraum 10 verbunden ist. Damit ist der Weg für das Druckwasser zu den Sprühdüsen 9 vom Druckwasseranschluß 2 über die Verteilerkammer 3 und die Verteilerkanäle 8 frei.The pressure connection 2 forms a cylinder chamber 10 for the control piston 6 Piston action in the opening direction. This cylinder space 10 is opposite Cylinder chamber 5 through a throttle line passing through the control piston 6 11 connected, the throttling effect by a corresponding throttle 12 is determined. About the throttle line 11 thus results in the closed Control piston 6 a pressure equalization in the cylinder chambers 10 and 5, so that after outside only the closing force of the loading spring 13 acts on the control piston 6, the itself on a screw-in base 14 penetrated by the control piston 6 for the cylinder space 5 supports. So that the control piston 6 from the drawn closed position into a passage that releases from the pressurized water connection 2 to the distribution chamber 3 Open position can be moved, it is necessary to adjust the pressure in the cylinder chamber 5 dismantle. For this purpose, at least one drain line 15 is provided, which can be opened by a control device 16. If one of the provided drain lines 15 opened via the associated control device 16, so the pressure in the cylinder chamber 5 drops, which with an axial adjustment of the Control piston 6 against the force of the load spring 13 due to the now one-sided Actuation is connected via the cylinder space 10. That is the way for the pressurized water to the spray nozzles 9 from the pressurized water connection 2 via the Distribution chamber 3 and the distribution channels 8 free.

Die Steuereinrichtungen 16 können unterschiedlich aufgebaut sein. Gemäß dem dargestellten Ausführungsbeispiel ist neben einer in einem Gehäuse 17 gehaltenen Glasbruchsicherung 18 ein elektromagnetisch betätigbares Steuerventil 19 vorgesehen, das wie die Glasbruchsicherung 18 die zugehörige Entleerungsleitung 15 sperrt, solange das Steuerventil 19 nicht geöffnet wird oder die Glasbruchsicherung 18 nicht bricht, was ein Öffnen des Steuerkolbens 6 in der beschriebenen Weise aufgrund seiner Druckwasserbeaufschlagung nach sich zieht. Um die ordnungsgemäße Funktion des jeweiligen Sprühkopfes 1a, 1b zu überprüfen, kann das Steuerventil 19 auch von Hand geöffnet werden.The control devices 16 can be constructed differently. According to the The illustrated embodiment is next to one held in a housing 17 Glass breakage protection 18 an electromagnetically actuated control valve 19 is provided, which, like the glass breakage protection device 18, blocks the associated drain line 15, as long as the control valve 19 is not opened or the glass break safety device 18 is not breaks what an opening of the control piston 6 in the manner described of its pressurized water. To function properly of the respective spray head 1a, 1b can also be checked by the control valve 19 can be opened by hand.

Der Steuerkolben 6 kann mit einer zusätzlichen Kolbenfläche 20 in einem Zylinderraum 21 versehen sein, der an eine Steuerleitung 22 angeschlossen ist. Da der Steuerkolben 6 über diese Kolbenfläche 20 im Öffnungssinn beaufschlagt werden kann, kann der Sprühkopf auch über die Steuerleitung 22 angesteuert werden, wenn der über die Steuerleitung aufgebrachte Beaufschlagungsdruck eine Kolbenverschiebung entgegen der Belastungsfeder 13 erlaubt, weil sich über die Drosselleitung 11 ein Druckmittelausgleich zwischen den Zylinderräumen 5 und 10 ergibt. Diese hydraulische Steuerleitung 22 kann beispielsweise mit der Verteilerkammer 3 des benachbarten Sprühkopfes 1b verbunden werden, um beim Ansprechen dieses benachbarten Sprühkopfes 1b eine zwangsweise Betätigung des angeschlossenen Sprühkopfes sicherzustellen. Die in den Sprühköpfen 1a und 1b hiefür vorgesehene, von der Verteilerkammer 3 ausgehende Steuerleitung ist im Ausführungsbeispiel mit 23 bezeichnet. Werden die Steuerleitungen 23 und 22 nicht benützt, so können ihre Anschlüsse durch Stopfen verschlossen werden.The control piston 6 can have an additional piston surface 20 in a cylinder space 21, which is connected to a control line 22. Since the Control piston 6 are acted upon via this piston surface 20 in the opening direction can, the spray head can also be controlled via the control line 22 if the application pressure applied via the control line causes a piston displacement allowed against the load spring 13, because of the throttle line 11 results in a pressure medium compensation between the cylinder spaces 5 and 10. This Hydraulic control line 22 can, for example, with the distribution chamber 3 of the adjacent spray head 1b to be connected in response to this adjacent Spray head 1b a forced actuation of the connected Ensure spray head. The intended for this in the spray heads 1a and 1b from the distribution chamber 3 outgoing control line is in the embodiment 23 designated. If the control lines 23 and 22 are not used, their can Connections are closed with plugs.

Wie aus der Zeichnung unmittelbar ersichtlich ist, würde der Zylinderraum 21 eine Verstellung des Steuerkolbens 6 verhindern, wenn nicht für ein Nachströmen des Druckmittels oder für eine Belüftung gesorgt wird. Aus diesem Grunde ist an die Steuerleitung 22 ein Nachsaugventil 24 angeschlossen, über das im Bedarfsfall der Zylinderraum 20 belüftet wird. Da dieses Nachsaugventil 24 als Rückschlagventil wirkt, wird durch dieses Nachsaugventil die Kolbenverstellung über die Steuerleitung 22 nicht beeinträchtigt.As can be seen directly from the drawing, the cylinder space 21 would be a Prevent adjustment of the control piston 6 if not for an afterflow of the Pressure medium or for ventilation is provided. For this reason, the Control line 22 connected to a suction valve 24, via which, if necessary Cylinder chamber 20 is ventilated. Since this suction valve 24 as a check valve acts, is the piston adjustment via the control line through this Nachsaugventil 22 not affected.

Die Erfindung ist selbstverständlich nicht auf das dargestellte Ausführungsbeispiel beschränkt. So könnte das Elektromagnetventil 16 auch über eine elektrische Signalleitung angesteuert werden, die über einen vom Steuerkolben 6 des Sprühkopfes 1b betätigbaren Schalter beaufschlagt wird, was wiederum die Ansteuerung des Steuerkolbens 6 des Sprühkopfes 1a in Abhängigkeit von der Stellung des Steuerkolbens 6 des Sprühkopfes 1b erlaubt. Im Falle eines hydraulisch betätigbaren Steuerventiles für die Entleerungsleitung 15 kann die Steuerleitung 23 auch an ein solches Steuerventil angeschlossen werden.The invention is of course not based on the illustrated embodiment limited. The solenoid valve 16 could also be via an electrical signal line are controlled via a by the control piston 6 of the spray head 1b actuated switch is applied, which in turn controls the control piston 6 of the spray head 1 a depending on the position of the control piston 6 of the spray head 1b allowed. In the case of a hydraulically operated control valve for the drain line 15, the control line 23 can also be connected to such a control valve be connected.

Claims (4)

  1. A quenching installation comprising at least two spray heads (1a, 1b), each provided with a pressure water connection (2), a distributor chamber (3), from which distributor ducts (8) lead to spray nozzles (9), and also provided with a spring-loaded control piston (6) which controls the passage of pressure water from the pressure water connection (2) to the distributor chamber (3) and which is controllable via at least one control device (16) and which can be actuated on both sides via two cylinder chambers (5, 10), of which the cylinder chamber (10) for actuation of the piston in the opening direction communicates on the one hand with the pressure water connection (2) and on the other hand with the other cylinder chamber (5) via a throttle conduit (11) in the control piston (6), characterised in that the spray heads (1a, 1b) have an emptying conduit (15), which is openable via the control device (16), for the cylinder chamber (10) for piston actuation in the closing direction, and a control piston (6) spring-loaded in the closing direction, and in that at least the control piston (6) of the one spray head (1a) is controllable via a control conduit (23) which is adapted to be actuated in dependence on the position of the control piston (6) of the other spray head (1b).
  2. A quenching installation according to claim 1, characterised in that the control piston (6) of at least one spray head (1a or 1b) has an additional piston surface (20) for piston actuation in the opening direction and in that the associated cylinder chamber (21) is connected to a hydraulic control conduit (22).
  3. A quenching installation according to claim 2, characterised in that the control conduit (22) is provided with a venting valve (24).
  4. A quenching installation according to any one of claims 1 to 3, characterised in that the control conduit (23) leading from the one spray head (1b) and intended for controlling the other spray head (1a) starts from the distributor chamber (3) of the controlling spray head (1b).
EP95920700A 1994-06-13 1995-06-13 Fire extinguishing system with at least two spraying heads Expired - Lifetime EP0766581B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1170/94 1994-06-13
AT117094 1994-06-13
PCT/AT1995/000116 WO1995034348A1 (en) 1994-06-13 1995-06-13 Fire extinguishing system with at least two spraying heads

Publications (2)

Publication Number Publication Date
EP0766581A1 EP0766581A1 (en) 1997-04-09
EP0766581B1 true EP0766581B1 (en) 1998-08-26

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Application Number Title Priority Date Filing Date
EP95920700A Expired - Lifetime EP0766581B1 (en) 1994-06-13 1995-06-13 Fire extinguishing system with at least two spraying heads

Country Status (5)

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EP (1) EP0766581B1 (en)
AT (1) ATE170085T1 (en)
DE (1) DE59503362D1 (en)
DK (1) DK0766581T3 (en)
WO (1) WO1995034348A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618092A1 (en) * 1996-05-06 1997-11-13 Total Feuerschutz Gmbh Excitation element
DE19618072A1 (en) * 1996-05-06 1997-11-13 Total Feuerschutz Gmbh Fire extinguishing device for motor vehicles that are parked in multi-storey car parks

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG49827A1 (en) * 1991-02-28 1998-06-15 Sundholm Goeran Spray-head for fighting fire
FI915669A0 (en) * 1991-11-26 1991-11-29 Goeran Sundholm ELDSLAECKNINGSANORDNING.
FI915730A0 (en) * 1991-12-04 1991-12-04 Goeran Sundholm ELDSLAECKNINGSANORDNING.

Also Published As

Publication number Publication date
DK0766581T3 (en) 1999-05-25
EP0766581A1 (en) 1997-04-09
DE59503362D1 (en) 1998-10-01
WO1995034348A1 (en) 1995-12-21
ATE170085T1 (en) 1998-09-15

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