Patent ID: 7914596

Claim:
An air purifier, comprising: an air blower circulating indoor air; a filter unit placed in a circulating airflow of the indoor air, the filter unit capturing dust in the air; and a guide path guiding the indoor air to the filter unit, wherein the guide path is followed by: a sharp turn corner for the airflow; a fixed partition plate provided downstream of the sharp turn corner; and a coarse dust collector collecting coarse dust separated from the airflow that has made a sharp turn and reduced in speed, wherein the fixed partition plate separates a first space defined by a first side of the fixed partition plate and the filter unit, from a second space defined by a second side, opposite to the first side, of the fixed partition plate and the coarse dust collector, the second space gradually increases in area of the airflow to reduce a speed of the airflow, and wherein part of the airflow that has made the sharp turn is separated and fed, together with the coarse dust, into the second space such that the coarse dust is collected in the coarse dust collector.