Air purifier

The utility model provides an air purifier which comprises a shell, a filtering structure and a wind wheel, the filtering structure and the wind wheel are both arranged in the shell, air inlets are formed in the two opposite sides of the shell, the air purifier is provided with a center shaft, and the center shaft is provided with an air inlet. The circumferential angle, with the center shaft as the axis, of the air inlet serves as the air inlet angle, the air inlet angle is an acute angle, and the wind wheel is formed through ultrasonic welding. According to the air purifier provided by the utility model, the air inlet angle corresponding to the air inlet is the acute angle, so that the position occupied by the air inlet is relatively small, and the influence on the external and internal structural layout of the air purifier is small. Meanwhile, when the air inlet angle is small, the problems that the air purification efficiency is reduced, noise is increased and the like can be caused, the structure of the