Centrifugal fan

FIG. 1 is a front side elevation view of a centrifugal fan embodying our design;

FIG. 2 is a rear side elevation view of the centrifugal fan shown in FIG. 1 ;

FIG. 3 is a right side elevation view of the centrifugal fan shown in FIG. 1 ;

FIG. 4 is a left side elevation view of the centrifugal fan shown in FIG. 1 ;

FIG. 5 is a top plan view of the centrifugal fan shown in FIG. 1 ;

FIG. 6 is a bottom plan view of the centrifugal fan shown in FIG. 1 ; and,

FIG. 7 is a perspective view of the centrifugal fan shown in FIG. 1 .

The broken line showing of portions of the centrifugal fan is included for the purpose of illustrating environmental structure and forms no part of the claimed design.