Fans {propeller-type fan} can cut air at an angle and push a spiral air wedge straight in front of fan blade. Propeller fans {fan} can move back and forth, using a crank linked to motor. Fans {centrifugal fan} can use a paddle wheel {impeller} in a casing, pull air in at center, and push air out straight.
To compress {compressor, air}| {air compressor}, a pump fans air into a sealed tank, thus building pressure. Sealing pump and fan prevents leaking air.
To dry clothes {dryer}|, a large drum turns on side using an electric motor, while a fan blows heat from gas flame or electric coils through drum holes. Air goes out exhaust flue, through filter to catch lint. For exhaust that must stay inside building, cold water pipes receive exhaust, and water and lint condense on pipes and drain away together.
To dry hair {hair dryer}|, an electric motor runs a fan that blows air over heater-coil Nichrome wire.
To sweep {vacuum cleaner}|, a fan causes vacuum, which sucks up dust into a filter.
7-Machine-Kinds-Electromechanical
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Date Modified: 2022.0225