Patent ID: 7115155

Claim:
An air filtration apparatus, comprising: a housing having a pollution-collecting chamber for holding water that partially fills the chamber, an air inlet and an air outlet, both disposed above the surface of water in the pollution-collecting chamber; a motor; a fan mounted within the housing and connected to the motor for drawing air into said pollution-collecting chamber through the air inlet and for exhausting air from the pollution-collecting chamber through the air outlet; an elongated vertical tube having a lower inlet end disposed in water in the pollution-collecting chamber; means for connecting the vertical hollow tube to the motor for rotating the tube about a vertical axis; the vertical tube having a plurality of vertically spaced openings supported above the water level in the pollution-collecting chamber, for discharging water received through said lower inlet end of the tube, as a spray under centrifugal force as the tube is rotated, into air containing wetable pollutants and passing upwardly along a path adjacent the tube; and whereby polluted air enters the pollution-collecting chamber and then passes upwardly adjacent to the opening means and through the spray to wet the wetable pollutants whereby the wetable pollutants remain in the pollution-collecting chamber, and the air passes toward said air outlet.