A ventilating apparatus which includes a housing divided by a rib into an inlet passage, an outlet passage, and a chamber. A controlling system having a motor, a drawing fan, and an exhaust fan. A filter net inserted in a slot between the air inlet of the housing and the drawing fan. A cover having a flange is fixedly mounted on the top of the housing and a louver provided with a plurality of air outlets and a plurality of air inlets is mounted on the bottom side of the housing.
申请公布号
US5259816(A)
申请公布日期
1993.11.09
申请号
US19920885042
申请日期
1992.05.18
申请人
KE, PO C.;LAI, KUO T.;LU, PANG T.;LAI, CHING C.;LIU, CHIA C.
发明人
KE, PO C.;LAI, KUO T.;LU, PANG T.;LAI, CHING C.;LIU, CHIA C.