Air purification apparatus

Abstract

An apparatus () for purifying polluted air consisting of particle phase pollutants and gaseous phase pollutants, the apparatus () comprising: a dust level sensor () to measure the amount of particle phase pollutants in the polluted air; a dust removal component () to remove the particle phase pollutants from the polluted air; a catalyst filtering core () to decompose the gaseous phase pollutants by chemical reaction; a valve () for selectively controlling a path of air flow within the apparatus () and is movable between an open position and closed position, the valve () being positioned downstream from the dust removal component (); wherein if the amount of particle phase pollutants measured by the dust level sensor () is above a predetermined value, the valve () is moved to the open position to enable the air to bypass the catalyst filtering core (); and if the amount of particle phase pollutants measured by the dust level sensor () is less than a predetermined value, the valve () is moved to the closed position to force the air to pass through the catalyst filtering core ().