EP0129629A1 - Apparatus to supply an automatic extinguishing system suitable for limited risks - Google Patents

Apparatus to supply an automatic extinguishing system suitable for limited risks Download PDF

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Publication number
EP0129629A1
EP0129629A1 EP83401329A EP83401329A EP0129629A1 EP 0129629 A1 EP0129629 A1 EP 0129629A1 EP 83401329 A EP83401329 A EP 83401329A EP 83401329 A EP83401329 A EP 83401329A EP 0129629 A1 EP0129629 A1 EP 0129629A1
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EP
European Patent Office
Prior art keywords
tank
water
extinguishing system
supply
distribution network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP83401329A
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German (de)
French (fr)
Inventor
Jean Marchais
Claude Terrasson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMAC SA
Original Assignee
SMAC SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMAC SA filed Critical SMAC SA
Priority to EP83401329A priority Critical patent/EP0129629A1/en
Publication of EP0129629A1 publication Critical patent/EP0129629A1/en
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/023—Permanently-installed equipment with containers for delivering the extinguishing substance the extinguishing material being expelled by compressed gas, taken from storage tanks, or by generating a pressure gas
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/60—Pipe-line systems wet, i.e. containing extinguishing material even when not in use

Definitions

  • the object of the present invention is to enable an automatic water extinguishing system to be produced, which is easily adaptable to limited locations and can be presented in a modular form, that is to say a system which has the advantages of sprinkler systems and modular systems, without having the disadvantages of prior systems.
  • the object of this invention is in fact a supply device for an automatic extinguishing system, which comprises a removable water tank, associated with a compressed air supply compressor and a pressure gauge, and provided at its outlet with a calibrated throttle for increasing the pressure drop as a function of a predetermined operating time.
  • the constriction is constituted by a small calibrated orifice formed in a nozzle fixed to the outlet pipe of the tank.
  • the size of the orifice creates a determined pressure drop and makes operation independent of the type and length of the pipes forming the distribution network, which makes it possible to use the supply device with any desired network, without the need for beforehand to calculate the pipelines of this network, and thus to choose at will, for the tank, the most appropriate location, even if it is far from the heads.
  • the supply device comprises a reservoir 1 which, at its upper part, includes a venting valve 2 and is connected to a low power air compressor 4, intended to establish above the water contained in the tank a determined pressure.
  • the reservoir 1 is provided at its lower part with an outlet pipe 12 on which a calibrated throttle is provided which considerably reduces the outlet passage.
  • the constriction is formed by a small calibrated orifice 14 formed in the closed end of a nozzle 16 which, on the one hand is assembled by a connector 18 on the outlet pipe 12 of the tank 1, and on the other hand is intended to be connected to a distribution network 20 indicated in phantom in Figure 1, this 2D network comprising for example four sprinkler heads for diffusion and detection 22, at different points of the room or rooms to be protected.
  • the connector 18 is extended by a connector 24 for assembly to the distribution network 20, and the reservoir has a dimension such that it can easily be moved, so that the supply device can be mounted exactly at the 'desired location, removable and removable.
  • a connector 24 for assembly to the distribution network 20
  • the reservoir has a dimension such that it can easily be moved, so that the supply device can be mounted exactly at the 'desired location, removable and removable.
  • the connector 24 ensures the connection of the nozzle 16 to the network 20, and also to a pipe 26 for connection to the water distribution network, or to another source, in order to allow filling. of tank 1 when necessary.
  • Valves 27 and 28 are then mounted on the pipes 20 and 26 and close their communication with the tank 1, while a non-return valve 30, mounted in the pipe 26, prevents the emptying of this tank.
  • the throttle 14 is calibrated according to the pressure and the desired operating time. It must in fact allow the diffusion of the water contained. in the tank with sufficient pressure and for a period such that a small fire can be extinguished or that rescue personnel, in particular the fire brigade, have time to arrive.
  • this constriction 14 at the outlet of the reservoir 1 creates, at this point, a significant pressure drop which is added to the pressure drop in the diffusion and detection heads 22, of the distribution network 20, of so that the pressure drop in the pipes of this network is practically negligible.
  • the pipes 20 can be chosen without any particular condition and have practically the diameter and the length preferred by the user.
  • the network 20 comprises sprinkler type heads, in each of which is mounted a heat-sensitive member, such as a fuse or a bulb, which, above a given temperature, releases a cover and allows the diffusion of water at the point where the increase in heat due to the fire occurs, so that the heads themselves provide detection, these heads 22 can without drawback be relatively far from the tank.
  • a relatively small capacity tank may be sufficient for the safety of several premises, since only the heads located in the fire zone will come into action and must be supplied.
  • the tank 1 is preferably provided with a pressure switch 32 which detects the decrease in pressure in the tank 1 by an internal contact and can thus serve as an alarm signaling the exit of the water through the pipe 12 to the network 20 , i.e. the triggering of the extinguishing system.
  • the extinguishing system can therefore be adapted exactly to the premises to be protected by simple connection of commercial pipelines between diffusion and detection heads and the supply device and constitute an autonomous automatic system. Its cost price is low compared to that of existing systems, but its operation is very reliable and makes it possible to detect the development of a fire and to fight in a localized, effective manner, at least the first moments of this development.

Abstract

The extinguishing device (1) comprises a removable water tank (1) equipped with a compressor (4) for supplying compressed air, with a pressure gauge (6) and with a level indicator (10). A nozzle (16) fixed to the outlet of the tank comprises a small calibrated orifice (14) creating a high head loss, and a coupling (24) for connection to a distribution network (20). The extinguishing system (1) can be adapted to various premises of limited dimensions by the appropriate selection of the calibrated orifice (14). <IMAGE>

Description

Il existe actuellement pour combattre le feu divers systèmes d'extinction automatiques. Certains d'entre eux se présentent sous la forme de modules autonomes, qui sont mis en place dans les zones concernées pour la protection spécifique de ces zones. Or ces systèmes utilisent comme agent extincteur une poudre, une mousse, de l'eau, ou du C0 2, qui est envoyé simultanément à tous les pulvérisateurs en place, qui sont en position ouverte et qui, tous, vont débiter, de sorte que la capacité d'extinction est limitée, la capacité du module ne pouvant être très importante.There are currently various fire extinguishing systems available for fighting fire. Some of them are in the form of autonomous modules, which are set up in the areas concerned for the specific protection of these areas. However, these systems use as extinguishing agent a powder, a foam, water, or C 0 2 , which is sent simultaneously to all the sprayers in place, which are in the open position and which, all, will deliver, so that the extinguishing capacity is limited, the capacity of the module cannot be very large.

De tels systèmes sont donc relativement coûteux par rapport à l'importance de la surface qu'ils permettent de protéger et ne sont, par suite, adaptés qu'à la protection de zones particulièrement dangereuses.Such systems are therefore relatively expensive in relation to the size of the surface which they make it possible to protect and are therefore only suitable for protecting particularly dangerous areas.

D'autres systèmes automatiques, qui utilisent de l'eau comme agent extincteur, sont constitués d'une façon générale par un certain nombre de têtes du type sprinkler, jouant à la fois le rôle de détecteurs et de diffuseurs, qui sont réunies par un réseau de canalisations à une ou plusieurs sources d'eau, par l'intermédiaire de groupes électropompes, ou motopompes, démarrés automatiquement lors de la fonte du fusible ou de l'éclatement de l'ampoule de l'une ou de plusieurs têtes de diffusion, si bien que la détection localisée d'un feu entraîne une extinction localisée par jaillissement sélectif d'eau à l'endroit concerné. Toutefois pour qu'un tel système soit efficace, le réseau de canalisations doit être calculé hy- drauliquement pour chaque cas, de façon à être adapté au risque à protéger et à fournir aux têtes un débit d'eau suffisant à une pression appropriée. Par ailleurs, son installation exige un emplacement relativement important, tandis que la présence des systèmes sophistiqués, tels que les moteurs, pompes et dispositif de démarrage automatique, nécessite une maintenance particulière. Les systèmes sprinkler à eau actuels sont donc adaptés à la protection des grands ensembles immobiliers tels que grandes surfaces de vente, entrepôts ou autres, dans lesquels ils permettent une extinction en tout point à un prix de revient au mètre carré raisonnable; mais sont nettement trop coûteux et trop lourds pour des locaux plus restreints.Other automatic systems, which use water as an extinguishing agent, generally consist of a number of heads of the sprinkler type, playing both the role of detectors and diffusers, which are joined by a network of pipes to one or more water sources, by means of electric pumps, or motor pumps, started automatically when the fuse blows or the bulb bursts from one or more diffusion heads , so that localized detection of a fire results in localized extinction by selective gushing of water at the location concerned. However, for such a system to be effective, the network of pipes must be calculated hydraulically for each case, so as to be adapted to the risk to be protected and to provide the heads with a sufficient flow of water at an appropriate pressure. Furthermore, its installation requires a relatively large location, while the presence of sophisticated systems, such as motors, pumps and self-starting device matic, requires special maintenance. Current water sprinkler systems are therefore suitable for the protection of large real estate complexes such as large sales areas, warehouses or others, in which they allow extinction at any point at a reasonable cost price per square meter; but are clearly too expensive and too heavy for smaller premises.

La présente invention a pour but de permettre de réaliser un système d'extinction automatique à eau, qui soit facilement adaptable à des emplacements limités et puisse se présenter sous une forme modulaire, c'est-à-dire un système qui présente les avantages des systèmes sprinkler et des systèmes modulaires, sans avoir les inconvénients des systèmes antérieurs.The object of the present invention is to enable an automatic water extinguishing system to be produced, which is easily adaptable to limited locations and can be presented in a modular form, that is to say a system which has the advantages of sprinkler systems and modular systems, without having the disadvantages of prior systems.

Cette invention a en effet pour objet un dispositif d'alimentation pour système d'extinction automatique, qui comporte un réservoir d'eau amovible, associé à un compresseur d'alimentation en air comprimé et à un manomètre, et muni à sa sortie d'un étranglement calibré d'accroissement de la perte de charge en fonction d'un temps de fonctionnement prédéterminé.The object of this invention is in fact a supply device for an automatic extinguishing system, which comprises a removable water tank, associated with a compressed air supply compressor and a pressure gauge, and provided at its outlet with a calibrated throttle for increasing the pressure drop as a function of a predetermined operating time.

On constate qu'un tel dispositif peut efficacement être raccordé à un réseau de distribution à têtes de diffusion du type sprinkler, et alimenter ce système lors du déclenchement de l'une ou l'autre de ces têtes.It is found that such a device can effectively be connected to a distribution network with sprinkler type diffusion heads, and supply this system when one or the other of these heads is triggered.

Selon un mode de réalisation préféré, l'étranglement est constitué par un petit orifice calibré ménagé dans un ajutage fixé à la canalisation de sortie du réservoir.According to a preferred embodiment, the constriction is constituted by a small calibrated orifice formed in a nozzle fixed to the outlet pipe of the tank.

La dimension de l'orifice crée une perte de charge déterminée et rend le fonctionnement indépendant du type et de la longueur des canalisations formant le réseau de distribution, ce qui permet d'utiliser le dispositif d'alimentation avec tout réseau désiré, sans avoir besoin au préalable de calculer les canalisations de ce réseau, et ainsi de choisir à volonté, pour le réservoir, l'emplacement le plus approprié, même s'il est éloigné des têtes.The size of the orifice creates a determined pressure drop and makes operation independent of the type and length of the pipes forming the distribution network, which makes it possible to use the supply device with any desired network, without the need for beforehand to calculate the pipelines of this network, and thus to choose at will, for the tank, the most appropriate location, even if it is far from the heads.

La description ci-dessous d'un mode de réalisation donné à titre d'exemple non limitatif, et représenté aux dessins annexés, fera d'ailleurs ressortir les avantages et caractéristiques de l'invention.The description below of an embodiment given by way of nonlimiting example, and represented in the appended drawings, will moreover highlight the advantages and characteristics of the invention.

Sur ces dessins :

  • - la fig. 1 est une vue schématique de face d'un dispositif d'alimentation selon l'invention;
  • - la fig. 2 est une vue à plus grande échelle, en coupe longitudinale, de l'ajutage formant l'étranglement calibré.
In these drawings:
  • - fig. 1 is a schematic front view of a supply device according to the invention;
  • - fig. 2 is an enlarged view, in longitudinal section, of the nozzle forming the calibrated throat.

Comme le montre la figure 1, le dispositif d'alimentation comporte un réservoir 1 qui, à sa partie supérieure, comporte une soupape de mise à l'atmosphère 2 et est relié à un compresseur d'air de faible puissance 4, destiné à établir au-dessus de l'eau contenue dans le réservoir une pression déterminée. Un manomètre 6, fixé sur le couvercle 8 du réservoir 1, mesure et indique la pression à l'intérieur de ce dernier tandis qu'un niveau d'eau 10, monté latéralement, permet de contrôler le remplissage.As shown in FIG. 1, the supply device comprises a reservoir 1 which, at its upper part, includes a venting valve 2 and is connected to a low power air compressor 4, intended to establish above the water contained in the tank a determined pressure. A pressure gauge 6, fixed on the cover 8 of the tank 1, measures and indicates the pressure inside the latter while a water level 10, mounted laterally, makes it possible to control the filling.

Le réservoir 1 est muni à sa partie inférieure d'une canalisation de sortie 12 sur laquelle est prévu un étranglement calibré qui réduit considérablement le passage de sortie.The reservoir 1 is provided at its lower part with an outlet pipe 12 on which a calibrated throttle is provided which considerably reduces the outlet passage.

Dans le mode de réalisation représenté sur la figure 2, l'étranglement est formé par un petit orifice calibré 14 ménagé dans l'extrémité fermée d'un ajutage 16 qui, d'une part est assemblé par un raccord 18 sur la canalisation de sortie 12 du réservoir 1, et d'autre part est destiné à être raccordé à un réseau de distribution 20 indiqué en trait mixte sur la figure 1, ce réseau 2D comprenant par exemple quatre têtes sprinkler de diffusion et de détection 22, en différents points du ou des locaux à protéger.In the embodiment shown in Figure 2, the constriction is formed by a small calibrated orifice 14 formed in the closed end of a nozzle 16 which, on the one hand is assembled by a connector 18 on the outlet pipe 12 of the tank 1, and on the other hand is intended to be connected to a distribution network 20 indicated in phantom in Figure 1, this 2D network comprising for example four sprinkler heads for diffusion and detection 22, at different points of the room or rooms to be protected.

De préférence, le raccord 18 est prolongé par un raccord 24 d'assemblage au réseau de distribution 20, et le réservoir a une dimension telle qu'il peut aisément être déplacé, de sorte que le dispositif d'alimentation peut être monté exactement à l'emplacement désiré, de manière amovible et démontable. Un tel dispositif permet par suite l'utilisation du système d'extinction à la manière d'un système modulaire autonome.Preferably, the connector 18 is extended by a connector 24 for assembly to the distribution network 20, and the reservoir has a dimension such that it can easily be moved, so that the supply device can be mounted exactly at the 'desired location, removable and removable. Such a device therefore allows the use of the extinguishing system in the manner of an autonomous modular system.

Selon un mode de réalisation préféré, le raccord 24 assure la liaison de l'ajutage 16 au réseau 20, et également à une canalisation 26 de branchement sur le réseau de distribution d'eau, ou sur une autre source, afin de permettre le remplissage du réservoir 1 lorsque cela est nécessaire.According to a preferred embodiment, the connector 24 ensures the connection of the nozzle 16 to the network 20, and also to a pipe 26 for connection to the water distribution network, or to another source, in order to allow filling. of tank 1 when necessary.

Des vannes 27 et 28 sont alors montées sur les canalisations 20 et 26 et ferment leur communication avec le réservoir 1, tandis qu'un clapet anti-retour 30, monté dans la canalisation 26, interdit la vidange de ce réservoir.Valves 27 and 28 are then mounted on the pipes 20 and 26 and close their communication with the tank 1, while a non-return valve 30, mounted in the pipe 26, prevents the emptying of this tank.

L'étranglement 14 est calibré en fonction de La pression et de la durée de fonctionnement désirée. I1 doit en effet permettre la diffusion de l'eau contenue. dans le réservoir avec une pression suffisante et pendant une durée telle qu'un feu de peu d'importance puisse Stre éteint ou que des secours, et notamment les pompiers, aient le temps d'arriver.The throttle 14 is calibrated according to the pressure and the desired operating time. It must in fact allow the diffusion of the water contained. in the tank with sufficient pressure and for a period such that a small fire can be extinguished or that rescue personnel, in particular the fire brigade, have time to arrive.

La présence de cet étranglement 14 à la sortie .du réservoir 1 crée, en ce point, une perte de charge importante qui s'ajoute à la perte de charge dans les têtes de diffusion et de détection 22, du réseau de distribution 20, de telle sorte que la perte de charge dans les canalisations de ce réseau est pratiquement négligeable. En conséquence, les canalisations 20 peuvent être choisies sans condition particulière et avoir pratiquement le diamètre et la longueur préférés par l'utilisateur.The presence of this constriction 14 at the outlet of the reservoir 1 creates, at this point, a significant pressure drop which is added to the pressure drop in the diffusion and detection heads 22, of the distribution network 20, of so that the pressure drop in the pipes of this network is practically negligible. In consequently, the pipes 20 can be chosen without any particular condition and have practically the diameter and the length preferred by the user.

Comme par ailleurs le réseau 20 comporte des têtes de type sprinkler, dans chacune desquelles est monté un organe sensible à la chaleur, tel qu'un fusible ou une ampoule, qui, au-dessus d'une température donnée, libère un opercule et permet la diffusion de l'eau au point où se produit l'accroissement de chaleur dû au feu, de sorte que les têtes assurent elles-mêmes la détection, ces têtes 22 peuvent sans inconvénient être relativement éloignées du réservoir. En outre un réservoir de capacité relativement faible peut suffire à la sécurité de plusieurs locaux, car seules les têtes situées dans la zone du feu entreront en action et devront être alimentées.As in addition, the network 20 comprises sprinkler type heads, in each of which is mounted a heat-sensitive member, such as a fuse or a bulb, which, above a given temperature, releases a cover and allows the diffusion of water at the point where the increase in heat due to the fire occurs, so that the heads themselves provide detection, these heads 22 can without drawback be relatively far from the tank. In addition, a relatively small capacity tank may be sufficient for the safety of several premises, since only the heads located in the fire zone will come into action and must be supplied.

Le réservoir 1 est, de préférence, muni d'un pressostat 32 qui détecte la diminution de pression dans le réservoir 1 par un contact intérieur et peut ainsi servir d'alarme signalant la sortie de l'eau par la canalisation 12 vers le réseau 20, c'est-à-dire le déclenchement du système d'extinction.The tank 1 is preferably provided with a pressure switch 32 which detects the decrease in pressure in the tank 1 by an internal contact and can thus serve as an alarm signaling the exit of the water through the pipe 12 to the network 20 , i.e. the triggering of the extinguishing system.

Le système d'extinction peut donc être adapté exactement aux locaux à protéger par simple branchement de canalisations du commerce entre des têtes de diffusion et de détection et le dispositif d'alimentation et constituer un système automatique autonome. Son prix de revient est faible par rapport à celui des systèmes existants, mais son fonctionnement est très fiable et permet de détecter le développement d'un feu et de combattre de façon localisée, efficacement, au moins les premiers instants de ce développement.The extinguishing system can therefore be adapted exactly to the premises to be protected by simple connection of commercial pipelines between diffusion and detection heads and the supply device and constitute an autonomous automatic system. Its cost price is low compared to that of existing systems, but its operation is very reliable and makes it possible to detect the development of a fire and to fight in a localized, effective manner, at least the first moments of this development.

Claims (7)

1 - Dispositif d'alimentation pour système d'extinction automatique à eau, comportant un réservoir d'eau amovible (1), associé à un compresseur (4) d'alimentation en air comprimé et à un manomètre (6), caractérisé en ce qu'il comporte, à la sortie du réservoir, un étranglement (14) calibré, d'accroissement de la perte de charge en fonction d'un temps de fonctionnement prédéterminé.1 - Supply device for automatic water extinguishing system, comprising a removable water tank (1), associated with a compressor (4) for supplying compressed air and with a pressure gauge (6), characterized in that that it comprises, at the outlet of the reservoir, a calibrated throttle (14), for increasing the pressure drop as a function of a predetermined operating time. 2 - Dispositif suivant la revendication 1, caractérisé en ce que l'étranglement est constitué par un petit orifice calibré (14) percé dans l'extrémité d'un ajutage (16) fixé à la sortie du réservoir (1).2 - Device according to claim 1, characterized in that the throttle is constituted by a small calibrated orifice (14) drilled in the end of a nozzle (16) fixed to the outlet of the tank (1). 3 - Dispositif suivant l'une des revendications 1 et 2 , caractérisé en ce que l'ajutage (16) est solidaire d'un raccord (24) de liaison, démontable, à un réseau de distribution (20).3 - Device according to one of claims 1 and 2, characterized in that the nozzle (16) is integral with a connector (24) connecting, removable, to a distribution network (20). 4 - Dispositif suivant la revendication 3, caractérisé en ce que le raccord de liaison (24) assure un branchement sur une canalisation (26) d'alimentation en eau.4 - Device according to claim 3, characterized in that the connection connector (24) provides a connection to a pipe (26) for water supply. 5 - Dispositif suivant l'une des revendications précédentes, caractérisé en ce que le réservoir est muni d'un pressostat (32) de déclenchement d'une alarme.5 - Device according to one of the preceding claims, characterized in that the tank is provided with a pressure switch (32) for triggering an alarm. 6 - Système d'extinction automatique pour la protection de petits risques, caractérisé en ce qu'il comporte un dispositif d'alimentation suivant l'une des revendications précédentes, qui est raccordé à un réseau de distribution (20) à têtes de diffusion (22) du type sprinkler d'une part, et à une source d'eau (26) d'autre part.6 - Automatic extinguishing system for the protection of small risks, characterized in that it comprises a supply device according to one of the preceding claims, which is connected to a distribution network (20) with diffusion heads ( 22) of the sprinkler type on the one hand, and to a source of water (26) on the other hand. 7 - Système d'extinction suivant la revendication 6 , caractérisé en ce que des vannes (27, 28 ) isolent le réservoir d'alimentation, l'une du réseau de distribution (20) , et l'autre de la source d'eau (26).7 - Extinguishing system according to claim 6, characterized in that valves (27, 28) isolate the supply tank, one from the distribution network (20), and the other from the water source (26).
EP83401329A 1983-06-28 1983-06-28 Apparatus to supply an automatic extinguishing system suitable for limited risks Ceased EP0129629A1 (en)

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Application Number Priority Date Filing Date Title
EP83401329A EP0129629A1 (en) 1983-06-28 1983-06-28 Apparatus to supply an automatic extinguishing system suitable for limited risks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83401329A EP0129629A1 (en) 1983-06-28 1983-06-28 Apparatus to supply an automatic extinguishing system suitable for limited risks

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EP0129629A1 true EP0129629A1 (en) 1985-01-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992022353A1 (en) * 1991-06-19 1992-12-23 Sundholm Goeran Method and equipment for fire fighting

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2132132A (en) * 1935-08-09 1938-10-04 Seat Jay Lawrence Fire extinguisher system
US2724444A (en) * 1953-08-05 1955-11-22 Automatic Sprinkler Corp Wet pipe pressure tank sprinkler system
DE2455364A1 (en) * 1974-11-22 1976-05-26 Bauknecht Industrieschutz Gmbh Sprinklers for high storage room - shelves provide different pipes with sprinklers of different flow resistance

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2132132A (en) * 1935-08-09 1938-10-04 Seat Jay Lawrence Fire extinguisher system
US2724444A (en) * 1953-08-05 1955-11-22 Automatic Sprinkler Corp Wet pipe pressure tank sprinkler system
DE2455364A1 (en) * 1974-11-22 1976-05-26 Bauknecht Industrieschutz Gmbh Sprinklers for high storage room - shelves provide different pipes with sprinklers of different flow resistance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992022353A1 (en) * 1991-06-19 1992-12-23 Sundholm Goeran Method and equipment for fire fighting
US5713417A (en) * 1991-06-19 1998-02-03 Sundholm; Goeran Method and equipment for fire fighting

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