FIG. 1 is a perspective view of an air purifier showing the new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left-side elevation view thereof;
FIG. 5 is a right-side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a perspective view thereof, showing the circulator part at an angle;
FIG. 9 is a front elevation view thereof;
FIG. 10 is a rear elevation view thereof;
FIG. 11 is a left-side elevation view thereof;
FIG. 12 is a right-side elevation view thereof;
FIG. 13 is a top plan view thereof;
FIG. 14 is a bottom plan view thereof;
FIG. 15 is a perspective view thereof, showing the circulator part at another angle;
FIG. 16 is a front elevation view thereof;
FIG. 17 is a rear elevation view thereof;
FIG. 18 is a left-side elevation view thereof;
FIG. 19 is a right-side elevation view thereof;
FIG. 20 is a top plan view thereof;
FIG. 21 is a bottom plan view thereof; and,
FIG. 22 is a partial perspective view thereof, showing the air purifier in a state of use.
The evenly spaced broken lines and unshaded areas depict portions of the air purifier that form no part of the claimed design. The dot-dash-dot broken line in FIG. 22 denotes the boundary of the partial view and forms no part of the claimed design.