FIG. 1 is a front perspective view of an air purifier showing our new design with its top hood in a closed position;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and
FIG. 7 is a bottom plan view thereof.
FIG. 8 is a front perspective view of the air purifier of FIG. 1 with its top hood in an open position;
FIG. 9 is a front elevational view thereof;
FIG. 10 is a rear elevational view thereof;
FIG. 11 is a left side elevational view thereof;
FIG. 12 is a right side elevational view thereof;
FIG. 13 is a top plan view thereof; and
FIG. 14 is a bottom plan view thereof.
FIG. 15 is a front perspective view of the air purifier of FIG. 1 with its top hood in another open position;
FIG. 16 is a front elevational view thereof;
FIG. 17 is a rear elevational view thereof;
FIG. 18 is a left side elevational view thereof;
FIG. 19 is a right side elevational view thereof;
FIG. 20 is a top plan view thereof; and,
FIG. 21 is a bottom plan view thereof.
The broken lines illustrate portions of the air purifier that form no part of the claimed design.