| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an energy-saving ceiling fan with which a pleasant cooling sensation can be obtained by an air flow, the ceiling fan being used for feeling cool by wind velocity or air agitation, etc. <P>SOLUTION: In a configuration having a torsional shape, although an installation angle of an inclination part 5 is constant regardless of the position in each radial direction of a blade 4, an installation angle of a warped part 6 is smaller than that of the inclination part 5 even in any radial direction, and the more outward in the blade 4 the installation angle is, the smaller the angle gets. The maximum value of a fan working amount exists near a boundary between the inclination part 5 and the warped part 6. Accordingly, pressure loss is reduced during air flow intake and a large amount of wind can be generated by low power consumption, and thereby a pleasant cooling sensation can be obtained by an air flow with the energy saved. <P>COPYRIGHT: (C)2012,JPO&INPIT |
