Air velocity control unit and air conditioning system having the same

摘要

An air velocity control unit includes first bars fixed using a frame. Second bars are disposed below the first bars. The second bars are alternatively arranged between the first bars. The second bars are connected with each other. The unit further includes a control member for moving the second bars upwardly and downwardly to control the air velocity. A connecting member connects the second bars to the control member. Clean air flows into a clean room by a controllable velocity in accordance with the upward and downward movement of the second bars.