| 摘要 |
<p>The present invention relates to an indoor air diffusing apparatus comprising: a ceiling-fixed part; a power generation unit coupled to the ceiling-fixed part; and a fan including a hub rotated by the power transmitting unit and a plurality of blades coupled to the hub wherein each of the blades has a front surface formed to ascend to the top thereof having curved parts, and has a bottom surface formed to descend to the bottom thereof by having an angle (a) of attack in a perpendicular direction of an extended blade from the hub horizontally. According to the present invention, when the fan is rotated, convex parts formed on the curved parts of the blades are capable of reducing drag by dispersing a fluid and are capable of preventing the vortices of the fluid from being generated on the bottom surfaces of the fluid such that the vibrations of the blade can be prevented from being caused by the vortices on the ends of the blades, thereby uniformly diffusing cold or hot air from an air conditioner to the entire area of an indoor space. In addition, according to the present invention, even if the blades have a large angle of attack, the vortices on the ends of the blades and the vibrations of the blades can be prevented to generate a large amount of air volume, thereby improving the efficiency of air volume.</p> |
