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US 2006/0048951 A1Published application
Method and system for extinguishing a fire
AssigneeMarioff Corporation Oy
InventorsGoran Sundholm, Maarit Tuomisaari
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AssigneeMarioff Corporation Oy
InventorsGoran Sundholm, Maarit Tuomisaari
Estimating the term…
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.
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, 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, 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.
Apparatus for extinguishing a fire in a space, especially in a tunnel or equivalent, said apparatus comprising 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, preferably mounted on first spraying heads, for forming at least one curtain (7) of extinguishing medium in the space and a number of spraying heads (6, 11, 12) provided with a protective element, such as a protective cup, for protecting at least one nozzle and/or heat-activated triggering means of the spraying head, said apparatus being used in a stage-wise manner, 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, especially by forming at least one curtain (7) of extinguishing medium, preferably by means of the-first nozzles of the first spraying heads (6), and a number of second spraying heads (11,12) are pre-activated by releasing the protecting element covering the nozzle and/or heat-activated triggering means, and in a second stage one or more of the second spraying heads (11,12) are activated to produce a spray of extinguishing medium.
Dependencies are inferred from the claim text.