Lynde, Carleton John, b. 1872 · New York, Macmillan · leaf 84
cuum is produced. It is pro-duced either by an air pump, by a fan, or by a centrifugal fan. The air pumphas been de-scribed above.The fan is similarto the ordinaryelectric fan usedfor stirring theair in a room.The air is drivenin a direction atright angles to theplane in whichthe fan blades… … nters Here- FIG. 51. — Vacuum cleaner with motor-drivencentrifugal fan. PHYSICS OF THE HOUSEHOLD The cleaner shown in Fig. 51 has a centrifugal fan driven byan electric motor. The air enters just behind the revolvingbrush. It passes into the fan at the center and is forced to theouter edge of the…
Physics · Home Economics
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