VENTILATOR FOR SPECIFIC SPACE(SMOKING AREA)

摘要

PURPOSE: A blower for specific space(smoking area) is provided to prevent polluted air from escaping from the specific space without walls. CONSTITUTION: Dust collecting parts(1) with wide suction areas are installed on a plurality of positions in a space to concentrically take in polluted air. Dozens of intake holes(1a) are formed on each of the dust collecting parts. The dust collecting parts are connected with air circuit parts(3) with narrow sectional areas by one or a plurality of contracting parts(2). The air circuit part is connected with an expansion part(7) and a power part(8). An air curtain is formed thereby to prevent polluted air from escaping.