| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressurized smoke-exhaustion system which can control a differential pressure applied to an attached chamber door to be a specified differential pressure by grasping an actual differential pressure applied to the attached chamber door, and a door having a differential pressure sensor, and prevent an opening/closing trouble of the attached chamber door from occurring, and also, prevent smoke from flowing out and diffusing. SOLUTION: Compressed air is made to flow into an attached chamber or an elevator hall 5 existing between a special escape staircase 1 and a living chamber 3, by a pressurized air supply fan 19. Thus, the attached chamber or the elevator hall 5 is pressurized to a higher pressure than the adjacent living room 3, and smoke is prevented from flowing into the attached chamber or the elevator hall 5 from the living chamber 3 in this pressurized smoke-discharging system 43. In such a pressurized smoke-discharging system 43, on an attached chamber door 13 between the attached chamber or the elevator hall 5 and the adjacent living chamber 3, a differential pressure sensor (distortion sensor 27) to detect a differential pressure applied to the attached chamber door 13 is provided. Also, a computing-controlling means, which controls the rotate-driving of the pressurized air supply fan 19 in response to a detected value from the differential pressure sensor, is provided.
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