CPC F04D 29/441 (2013.01) [F04D 17/16 (2013.01); F04D 29/4226 (2013.01); G06F 1/203 (2013.01)] | 20 Claims |
1. A centrifugal fan, comprising:
a housing;
an impeller disposed in the housing;
an air inlet configured to cooperates with the impeller, wherein the air inlet is disposed on the housing;
a flow channel configured to cooperate with the impeller, wherein the flow channel is disposed in the housing, and wherein the flow channel comprises a pressurization area;
an air baffle ring configured to prevent air in the pressurization area from leaking through the air inlet, wherein the air baffle ring is disposed in the housing around a part of the air inlet, and wherein the air baffle ring protrudes toward one side of the impeller; and
a volute tongue disposed in the housing,
wherein a first end of the air baffle ring is located on one side on which a connection line between a center of the volute tongue and a center of the impeller is away from the pressurization area.
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