An air purifier has a body casing. A centrifugal fan is arranged at a substantially center in the body casing. The centrifugal fan has a rotary shaft extending in a depth direction of the air purifier and an inlet port facing frontward in the air purifier. Air suctioned by the centrifugal fan via the inlet port is blown out from the centrifugal fan in a direction perpendicular to the rotary shaft of the centrifugal fan. An air purifying filter is arranged so as to be aligned with the centrifugal fan along the direction perpendicular to the rotary shaft of the centrifugal fan. An air inlet port is provided forward of the centrifugal fan so as to communicate with the inlet port of the centrifugal fan. When the centrifugal fan is rotated, air is suctioned to the inside of the air purifier via the air inlet port. An air outlet port is provided corresponding to the air purifying filter so as to blow out the air purified by the air purifying filter to the outside of the air purifier.
