| 摘要 |
The present invention provides an emergency depressrurization device for an air duct which is installed on a connection duct connecting vertical and horizontal ducts and discharges air inside a duct in case of emergency. The device comprises a vertical duct vertically formed; a horizontal duct arranged to cross at right angle to the vertical duct; a connection duct formed between the vertical and horizontal ducts, connecting the vertical and horizontal ducts and having an air outlet formed on the upper surface thereof; and a flap shaft-coupled to the upper surface of the connection duct to be able to rotate using a hinge shaft, and selectively opening and closing the air outlet according to air pressure inside the connection duct. |
