Air purifier

The utility model discloses an air purifier. The air purifier comprises a housing, a primary filter element, an air blower, a combined filter element and a control device; the primary filter element, the air blower and the combined filter element are sequentially mounted in the housing; the control device is mounted on the housing and connected with the air blower; the housing comprises a first side plate, a top plate, a second side plate, a bottom plate, a front plate and a rear plate; the first side plate, the top plate, the second side plate and the bottom plate are sequentially connected to encircle a cylindrical housing frame; the front plate and the rear plate are respectively mounted at the front side and the rear side of the housing frame; an air inlet is formed in the first side plate; an air outlet is formed in the second side plate; the primary filter element, the air blower and the combined filter element are arranged between the first side plate and the second side plate; the primary filter element is close to the air inlet; the combined filter element is closed to the air outlet. According to the air purifier, air is fed from the left and exhausted from the right without any interference, and the air feeding and air exhausting are independent from each other, so that the air purifying efficiency is increased.