Air purifier

FIG. 1 is a perspective view of an air purifier showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is an exploded view of FIG. 1 showing the upper part and the filter cartridges separated from the lower part; and,

FIG. 10 is an exploded view of FIG: 2 showing the upper part and the filter cartridges separated from the lower part.

The dashed broken lines illustrate portions of the air purifier that form no part of the claimed design. The oblique line shading shown in the drawings indicates a transparent or translucent surface.