| 摘要 |
A centrifugal air blower (100) and a fresh air device having the blower, wherein the centrifugal air blower (100) comprises: a fan (10), an air flue (20) outside of the fan, and a motor (30) for rotating the fan. The air flue (20) is a cavity formed between two air flue plates (21,22), front plate (23), back plate (24) and the external surface of the fan. Air outlets (25,26) are formed on the two ends of the air flue respectively, thus two air flues (201,202) having two air outlets are formed. When the fan rotates, it blows suction air in two directions simultaneously through the two air flues and the two air outlets. The fresh air device comprises: a housing (40), a centrifugal air blower group (200) assembled by the two centrifugal air blowers, an air filter unit (50), and a front panel (60) used for controlling and displaying. The present invention can improve the operating efficiency of the fan, reduce volume, increase air delivery, and decrease noise and energy consumption. |
