초록 ▼

A fan filter unit for clean rooms has baffle structures sized and placed to limit the paths of entry of air flow from the unit motorized fan to the outlet ports, the baffle structures extending for a vertical height sufficient to avoid reversal of air flow within the enclosure for lower energy requi

A fan filter unit for clean rooms has baffle structures sized and placed to limit the paths of entry of air flow from the unit motorized fan to the outlet ports, the baffle structures extending for a vertical height sufficient to avoid reversal of air flow within the enclosure for lower energy requirements in the unit while controlling noise levels and keeping BTU output low.

대표청구항 ▼

[ I claim:] [1.] A high filtering efficiency, low energy, low noise fan filter unit for flowing air filtered through a high efficiency particulate air filter into a clean room, said fan filter unit being normally horizontally disposed and comprising a longitudinally and laterally extended enclosure

[ I claim:] [1.] A high filtering efficiency, low energy, low noise fan filter unit for flowing air filtered through a high efficiency particulate air filter into a clean room, said fan filter unit being normally horizontally disposed and comprising a longitudinally and laterally extended enclosure having an air inlet and an air outlet, a high efficiency particulate air filter unit in air-flow communication with the enclosure outlet across a plenum defined by the enclosure and the air filter unit, a motorized fan in air flow communication with the enclosure inlet and the outlet, said fan being supported centrally within the enclosure, said enclosure outlet comprising a longitudinally spaced ports and laterally spaced ports, said ports lying in a normally horizontal common port plane below the fan and collectively being of sufficient cross-sectional area to pass without substantial back pressure the air flow generated by the motorized fan, individual baffle structures extending substantially normal to the common port plane adjacently before each said port and between the fan and the port, the baffle structures being arranged to block all direct air flow from the motorized fan into the ports, whereby air flow from the ports is linear and free of reversal in flow direction within said enclosure and within said ports.