Air purifier

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

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is another side view thereof;

FIG. 6 is a top view thereof; and

FIG. 7 is a bottom view thereof.

FIG. 8 is an enlarged view of the encircled portion of FIG. 1 ; and,

FIG. 9 is an enlarged view of the encircled portion of FIG. 2 .

The broken line showing of an air purifier is included for the purpose of illustrating portions of the article and forms no part of the claimed design.

The dot-dash lines encircling portions of FIGS. 1 and 2 are included for the purpose of illustrating areas which are shown enlarged in later figures, and form no part of the claimed design.