| 摘要 |
A centrifugal fan including first blades and second blades disposed at both sides of a main plate, respectively, and a first convex part and a second convex part formed at a fan housing to correspond to the first blades and the second blades, respectively, wherein an airflow generated by the first blades and an airflow generated by the second blades are guided to be divided into the first convex part and the second convex part, respectively. |
| 主权项 |
1. A centrifugal fan comprising:
a rotatable impeller; and a fan housing to accommodate the impeller, the fan housing having a first inlet and a second inlet to respectively intake air along a rotation axis of the impeller, and an outlet to exhaust air in a direction perpendicular to the rotation axis, wherein the fan housing comprises:
a first plate having the first inlet,a second plate forming a space with the first plate to accommodate the impeller, the second plate having the second inlet, anda sidewall connecting the first plate to the second plate, the sidewall expanding at an outer side of the impeller in a circumferential direction to guide air flowed through the first and second inlets to the outlet, wherein the impeller comprises:
a main plate having a first side facing the first inlet and a second side facing the second inlet,a plurality of first blades arranged at the first side in a circumferential direction, anda plurality of second blades arranged at the second side in a circumferential direction, and wherein the sidewall comprises:
a first convex part protruding away from the rotation axis, the first convex part expanding outside the first blades in a circumferential direction, anda second convex part protruding away from the rotation axis, the second convex expanding outside the second blades in a circumferential direction. |
