Installation for fighting fire, spray head

A - Human Necessities – 62 – C

Patent

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Details

A62C 37/11 (2006.01) A62C 3/02 (2006.01) A62C 3/07 (2006.01)

Patent

CA 2385708

The invention relates to an installation for fighting fire, the installation comprising a number of spray heads (330a, 380a), a pipe system (381) for leading extinguishing medium to the spray heads, the spray heads comprising a holder body having an inlet for incoming extinguishing medium, at least one nozzle and a cover locked in a protective position in front of said nozzle when the installation is in an inactive mode and, arranged to be displaceable upon activation of the installation to a released position by release of the locking, in which released position the cover is clear of said nozzle so that the nozzle may spray extinguishing medium when the spray head is in an active mode. In order to be able to use the installation in conditions in which it can be strongly exposed to dirt and impurities and in order that it will not be activated on account of the spray heads of the installation being exposed to impacts or heat not coming from the seat of the fire, the installation is characterized in that the spray heads (330a, 380a) comprise a displaceable device which is arranged to be displaced by the effect of pressure of a fluid in relation to the holder body and thus exert a force on a locking so that it releases the cover.

Cette invention concerne une installation de lutte contre le feu comprenant un certain nombre de sprinklers (330a, 380a) alimenté par un réseau de canalisations (381) en agent extincteur. Les sprinklers comportent un corps avec une entrée par laquelle arrive l'agent extincteur, au moins une buse et un couvercle disposé en position de fermeture à l'avant de ladite buse lorsque l'installation n'est pas activée et qui est conçu pour passer sur une position d'ouverture en cas d'activation de l'installation. En position de déblocage, le couvercle s'écarte de la buse, laquelle peut alors pulvériser l'agent extincteur. Pour que l'installation puisse être utilisée dans un environnement très poussiéreux ou très sale et qu'elle se déclenche pas accidentellement par suite de chocs infligés aux sprinklers ou d'une chaleur autre que celle provenant de l'incendie, cette installation est conçue de sorte que les sprinklers (330a, 380a) comportent un dispositif qui peut être déplacé sous l'effet de la pression du fluide par rapport au corps de maintien et donc exerce une force capable de débloquer le couvercle.

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