| 摘要 |
The present utility model relates to ventilation products, and particularly to a drum fan. The drum fan comprises a cylindrical housing (1), a front grid guard (3) at a front end face of the cylindrical housing (1), a rear grid guard (4) at a rear end face of the cylindrical housing (1) and fan blades (2) for wind supply, characterized in that the fan blades (2) are totally or partially disposed outside the rear end face of the cylindrical housing (1). The drum fan is advantageous in a large wind supply, a low noise and a longer wind supply distance and can be extensively applied in factories, farms, warehouses and other public sites. |
