Pressure prevention and exhaust smoke facility

摘要

PROBLEM TO BE SOLVED: To provide a compression smoke prevention and exhaustion equipment enabled to perform an efficient and reliable smoke insulation by reducing an excessive air-supply in the compression smoke prevention and exhaustion equipment.SOLUTION: A compression smoke prevention and exhaustion equipment 10 for feeding air in a structure 1 from an air supply port 4 via an attachment chamber 2 to a smoke insulation opening 3 comprises airflow guiding means 20 for guiding the airflow F by the air-supply from the air supply port 4, into a downward flow Df from the upper part As of the smoke insulation opening 3.