| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a fluid circulation apparatus capable of avoiding the generation of swirls resulting from merger of fluid flows and reducing noise by pre-revolution.SOLUTION: A swirl flow generator 203 is formed of a porous member formed to rotate around a motor axis CLm in the same direction as that of an impeller 14 and to allow internal air to flow in any directions. Since the swirl flow generator 203 generates a swirl flow of the air rotating in the same direction as that of the swirl flow generator 203 by the viscosity of the air circulating in the swirl flow generator 203, the swirl flow can relax the collision with the air flowing between blades 141 and thereby reduce noise of a blower 10. Since the air as the swirl flow enters the impeller 14 without merging with an air flow, it is possible to avoid the generation of swirls resulting from the merger with the air flow.</p> |
