Patent ID: 9732477
Date: 2017-08-15
CPC Classifications: B01D,E01C,E01F

Claim:
1. An apparatus for controlling airborne pollution, the apparatus comprising: (a) a leeward wall located near a polluted region; and (b) a windward wall located between the leeward wall and the polluted region, the windward wall extending upwardly to a first wall height; (c) the leeward wall and the windward wall being spaced apart so as to define an airflow passageway therebetween; (d) the leeward wall including an upper portion extending above the first wall height, the upper portion directing airflow from a top opening on a windward side, downward through the airflow passageway, and out at least one opening located in or below the leeward wall and below the first wall height for exhausting the airflow from the airflow passageway; (e) wherein the upper portion has a deflector that overhangs the airflow passageway and directs the airflow down into the airflow passageway.