Spraying head, spraying apparatus and method for fire extinguishing

摘要

A spraying head, especially a spraying head intended for fire extinguishing, which comprises a frame part, an inlet for extinguishing medium and at least two nozzles. At least one first nozzle (9) is arranged in a spraying head part (2), for which first nozzle (9) the medium passage from the inlet of the spraying head is always open and that at least one second nozzle (4) is arranged in a sprinkler part (1) which comprises a triggering means (5), whereby the passage of medium from the inlet to at least one second nozzle (4) is closed when the triggering means (5) is non-activated, and that the passage of medium for at least one second nozzle (4) is open when the triggering means (5) is activated. The invention also relates to a method.

主权项

1. A spraying head for fire extinguishing comprising:
a frame part defining an inlet for extinguishing medium; a spraying head part coupled with the frame part and at least partially defining a first passage in fluid communication with the inlet; wherein the first passage is configured to fluidly couple to a valve element, the valve element is configured to receive a signal from a detector device so as to provide a medium from a medium source to the spraying head; a first nozzle arranged in the spraying head part, wherein the first nozzle is in communication with the inlet via the first passage,the first passage being an open passage from an outlet of the first nozzle to the valve element, the valve element located upstream of the inlet; a sprinkler part coupled with the spraying head part, comprising a heat-sensitive trigger, and defining a second passage fluidly communicating with the inlet; and a second nozzle arranged in the sprinkler part and in fluid communication with the inlet via the second passage, wherein the second passage is closed when the trigger is non-activated, and the second passage is open when the trigger is activated, wherein the trigger is a one-time trigger that breaks once activated leaving the second passage an open passage.