| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a depressurizing device for inactive gas fire-extinguishing equipment which avoids an effect of a wind pressure to an air current flowing inside a duct to prevent a structural adverse effect on a building, and can exhaust inactive gas reliably. <P>SOLUTION: In a duct connecting the indoor space where the inactive gas fire-extinguishing equipment is installed to the outdoor space, a damper is provided for generating an air current from indoor space to outdoor space against a wind pressure of the air current from the outdoor space to the indoor space when fire-extinguishing gas is produced from the inactive gas fire-extinguishing equipment, and the damper can set a flow path cross-sectional area of an opening of the damper so that the flow velocity at the opening of the damper of the air current exhausted from the indoor space where the inactive gas fire-extinguishing equipment is installed becomes higher than the flow velocity of wind blown from the outdoor space. <P>COPYRIGHT: (C)2012,JPO&INPIT |
