Method and system for extinguishing a fire
AssigneeMarioff Corporation Oy
InventorsGoran Sundholm, Maarit Tuomisaari
Life of this patent
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Abstract
Method for extinguishing a fire in a space, especially in a tunnel or equivalent, in which method an extinguishing medium is sprayed in the space by means of spraying heads. In a first stage of the method, the flow and temperature of the hot gases produced by the fire are influenced by spraying an extinguishing medium into the space, especially by creating in the space at least one curtain (7) of extinguishing medium, and at least some spraying heads (11, 12) in the space are pre-activated into a state of readiness, and in a second stage at least one spraying head is activated to produce a spray of extinguishing medium. The invention also concerns an apparatus.
Claims18
Method for extinguishing a fire in a space in which method an extinguishing medium is sprayed in the space by means of spraying heads, characterized in that, in a first stage of the method, the flow and temperature of the hot gases produced by the fire are influenced by spraying an extinguishing medium into the space, and at least some spraying heads (11, 12) in the space are pre-activated into a state of readiness, and in a second stage at least one spraying head is activated to produce a spray of extinguishing medium.
Apparatus for extinguishing a fire in a space, said apparatus comprising first and second spraying heads arranged in the space and a piping system for conveying an extinguishing medium to the spraying heads, characterized in that the apparatus comprises
- first nozzles for forming at least one curtain (7) of extinguishing medium in the space and
- a protective element for at least one of the second spraying heads (11, 12) for protecting at least one nozzle or heat-activated triggering means of the at least one of the second spraying heads,
- wherein in a first stage the flow and temperature of the hot gases produced by the fire are influenced by spraying an extinguishing medium into the space from the first spraying heads (6), and the at least one of the second spraying heads (11, 12) is pre-activated by releasing the protecting element covering the nozzle or heat-activated triggering means, and in a second stage the at least one of the second spraying heads (11, 12) is activated to produce a spray of extinguishing medium.
Dependencies are inferred from the claim text.