| 摘要 |
PURPOSE: A fire damper is provided to prevent smoke generated in the indoor space from being flowed into an emergency route through a smoke removed zone, by forming differential pressure condition in the smoke removed zone in case of fire. CONSTITUTION: A fire damper includes a main body (10), an opening/closing control part (20), a differential pressure sensor part (30) and a control part (40). An air supply outlet (11) is formed in the main body. The opening/closing control part controls opening/closing, and the extend of opening/closing of the air supply outlet. The differential pressure sensor part measures relative differential pressure between a main room and a front room. The control part controls the driving thereof. When a fire signal is applied, the control part opens the air supply outlet through the opening/closing control part, and forms differential pressure condition of the front room through anti-smoke wind which is flowed in.
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