| 摘要 |
A modified side exhaust fan structure with multiple flush and rectangular blades in whirling arrangement provided in a guide frame having side exhaust topped by a hood. Each blade indicates upright to the plane of the hood. Air current created as the fan turns is fully drained crossing the vertical plane of each blade offering an effective solution to the problem of insufficient air drain due to back-draft found in the prior art with blades each with an exit inclination.
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