| 摘要 |
PURPOSE:To prevent the generation of abnormal sound from a blower by providing, between a fan portion and a suspended plate, a space for generating turbulent flow so that air pressure waves are dampened by the trubulent flow. CONSTITUTION:Inflow air which has even been arranged in laminar flow once, by means of suspended plate 1 changes from the laminar flow condition to a turbulent flow condition through a turbulent flow space 5, and then is sucked and discharged through a fan portion 4. Accordingly, air pressure waves which are produced by the collision of air with fan pieces 4a, is damped by the turbulent flow, and abnormal sound which is experienced in the conventional blowers is prevented from being generated since no suspended plate acting as a member to be vibrated exists in the vicinity of the fan portion. |
