A fan guide including a guide body, a central frame positioned at a central portion
of the guide body and having an outer circumferential region, a plurality of motor
fixtures formed at the outer circumferential region of the central frame for fixing
a motor coupled with a fan, and at least three straight connecting frames for connecting
the guide body and the central frame to each other, wherein one of intersection
points among imaginary lines extending the three straight connecting frames is
inside the outer circumferential region and the other intersection points among
imaginary lines extending the three straight connecting frames are outside the
outer circumferential region. By this arrangement, it is possible to decrease the
degree of noise resulting from a blade passing frequency while destroying the regularity
of a vortex shedding formed at each frame to reduce the interaction between a vortex
flow and fan blades, thereby achieving a reduction in noise and flow loss.
