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Method and fire extinguishing system for extinguishing a fire in a closed room

A fire extinguishing system and room technology, applied in the field of fire extinguishing systems, can solve problems such as increasing effective time

Inactive Publication Date: 2016-11-16
AMRONA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] Based on this problem as posed, the invention solves the following object: to additionally develop a method and a corresponding fire extinguishing system of the type mentioned at the outset in order to be able to increase the effective time without endangering anyone who may be in the closed room

Method used

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  • Method and fire extinguishing system for extinguishing a fire in a closed room
  • Method and fire extinguishing system for extinguishing a fire in a closed room

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Embodiment Construction

[0074] Figure 1a shows the flood gradient of a conventional fire suppression system; ie, the development of the fire suppression gas concentration in an enclosed room, where a delayed flood with a warning period occurs over time. In detail, Figure 1a plots the concentration of extinguishing gas entering a closed room versus time. In the flood gradient shown in Figure 1a, the IT room acts as a closed room. Figure 1 b shows the development of the oxygen concentration in a closed room over time when the room is flooded as shown in Figure 1 a. In the example shown in Figure 1a, CO 2 Used as fire extinguishing gas.

[0075] t 0 The time represents the point in time at which the fire detection device responded or activated the manual trigger (if a manual trigger is set). Due to device / system-related contingencies, at time t 1 The response of the alarm mechanism used to warn people in the fire extinguishing / hazardous area is the same as at time t 0 The fire detection device usu...

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Abstract

The invention relates to a system and a method for extinguishing a fire in an enclosed space (6), wherein the enclosed space (6) is flooded with an extinguishing gas at least until a concentration of the extinguishing gas suitable for having an extinguishing effect ( a). In order to achieve the fastest possible realization of the maximum extinguishing gas concentration (b) without the flooding of the room (6) thus posing a danger to persons, the flooding of the enclosed space (6) according to the invention is divided into a pre-flooding phase and a subsequent main flooding stage. The pre-flooding phase corresponds to the time interval between the time (t1) when the initial alarm is sounded to warn the person of the impending danger and the predefined time (t2). The main flooding phase corresponds to the time interval between a predefined time (t2) and the time (t4) when the maximum extinguishing gas concentration (b) is reached. The enclosure (6) is flooded such that during the entire pre-flooding phase the concentration of extinguishing gas in the enclosure (6) does not exceed a predefined or predefinable value for the extinguishing gas used which is below the critical NOAEL value.

Description

technical field [0001] The invention relates to a method for extinguishing a fire in a closed room, wherein the closed room is flooded with extinguishing gas at least until a concentration of the extinguishing gas which provides an extinguishing effect is reached in the flooded area. The invention also relates to a fire extinguishing system for extinguishing a fire in a closed room by flooding the closed room with extinguishing gas in a regulated manner, wherein the fire extinguishing system comprises: at least one source of extinguishing gas for supplying the extinguishing gas; a fire extinguishing gas supply piping system through which the fire extinguishing gas provided by the at least one fire extinguishing gas source can be supplied to the closed room; and a control unit for setting the supplied The quantity of extinguishing gas to the enclosed room. Background technique [0002] The principle of such an extinguishing system is known from the prior art and essentially ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62C99/00
CPCA62C99/0018A62C35/68A62C37/04A62C3/002
Inventor E-W·瓦格纳
Owner AMRONA
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