FIG. 1 is a perspective view of a fan with air purification function 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 cross-sectional view taken along the line 8-8 of FIG. 2;
FIG. 9 is a perspective view of a fan with air purification function showing a state of the damper being slightly protruded;
FIG. 10 is a front elevation view thereof;
FIG. 11 is a rear elevation view thereof;
FIG. 12 is a left-side elevation view thereof;
FIG. 13 is a right-side elevation view thereof;
FIG. 14 is a top plan view thereof;
FIG. 15 is a bottom plan view thereof;
FIG. 16 is a cross-sectional view taken along the line 16-16 of FIG. 10;
FIG. 17 is a perspective view of a fan with air purification function howing another state of the damper being fay protruded;
FIG. 18 is a front elevation view thereof;
FIG. 19 is a rear elevation view thereof;
FIG. 20 is a left-side elevation view thereof;
FIG. 21 is a right-side elevation view thereof;
FIG. 22 is a top plan view thereof;
FIG. 23 is a bottom plan view thereof; and,
FIG. 24 is a cross-sectional view taken along the line 24-24 of FIG. 18.
The parts shown by means of broken lines in the drawing figures are not part of the claimed design.