A centrifugal fan system includes a casing, a plurality of fan blades, a ring wall and a base. The shell has at least a chassis ringed around the periphery of the shell, and the fan blades are surrounded by the chassis.
The ring wall extends and protrudes from the bottom surface of the chassis, and the shell, the fan blades and the ring wall constitute a rotor. The seat body is used to carry the rotor. The side wall of the seat body corresponds to the ring wall to define an accommodating space.
A centrifugal fan is characterized by comprising: a housing with at least a chassis ringed around the periphery of the housing; a plurality of fan blades arranged on the chassis; and a ring wall extending and protruding from the chassis The bottom surface, and the casing, the fan blades and the ring wall constitute a rotor; and a base body for supporting the rotor, wherein the side wall of the base body and the ring wall correspondingly surround an accommodating space.
The characteristic of axial flow is that the fluid flows along the axial direction of the fan blade. Such as electric fans and exhaust fans in the home. The centrifugal type uses centrifugal force to draw fluid from the axial direction of the fan and then uses centrifugal force to throw the fluid out of the circumferential direction.
The above is a counterpoint, mainly because it is easier to establish a concept. Actually, the airflow drives the fan to rotate. At the same speed, the axial flow fan requires a large air flow, but the wind pressure it bears is small; the centrifugal fan requires a small air flow, but the wind pressure is large.
