Centrifugal fan
First Claim
1. A centrifugal fan comprising:
- a centrifugal impeller having a number of blades around a rotary shaft, the centrifugal impeller sucking air in the axial direction of the rotary shaft and blowing it out in the radial direction;
a casing for accommodating the centrifugal impeller, the casing having a plurality of outlets for blowing out air; and
stator blades arranged in the casing, extending from the outer diameter side of the centrifugal impeller to the downstream side of an air current.
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Accused Products
Abstract
According to the present invention, there are provided diffusers 115 which extend from portions close to the outer diameter of the centrifugal impeller 111 to the downstream side of a current of air, on the outer diameter side of the centrifugal impeller 111 and around the circumference. Due to the foregoing, while a current of air blown out from the impeller 111 is being straightened by the diffusers 115, the dynamic pressure of the current of air is converted into static pressure. Consequently, it is possible to make the current of air flow stably into the outlet 114 side without disturbing it. Therefore, while the generation of noise is being suppressed, the total pressure of the fan 110 can be sufficiently increased.
17 Citations
5 Claims
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1. A centrifugal fan comprising:
- a centrifugal impeller having a number of blades around a rotary shaft, the centrifugal impeller sucking air in the axial direction of the rotary shaft and blowing it out in the radial direction;
a casing for accommodating the centrifugal impeller, the casing having a plurality of outlets for blowing out air; and
stator blades arranged in the casing, extending from the outer diameter side of the centrifugal impeller to the downstream side of an air current. - View Dependent Claims (2, 3, 4, 5)
- a centrifugal impeller having a number of blades around a rotary shaft, the centrifugal impeller sucking air in the axial direction of the rotary shaft and blowing it out in the radial direction;
Specification