| 摘要 |
PROBLEM TO BE SOLVED: To provide a fan exerting superior blowing capability and effectively suppressing the occurrence of noise, a molding die used for manufacturing the fan and a fluid feeding device equipped with the fan. SOLUTION: A cross flow fan includes a plurality of fan blades 21 arranged so as to be spaced from each other in a peripheral direction. The angle which is formed by a straight line 336 passing through an outer edge 27 and a center axis 101 which is the rotational center of the fan and by a tangent 337 of a center line 106 in the outer edge 27, is specified as an outer peripheral side blade tip angleβ. An angle which is formed by a chord line 333 and by a straight line 332 passing through the center axis 101 and a contact 331 of an outer peripheral side blade tip part 29 and chord line 333, is specified as a stagger angleα. A plurality of fan blades 21 contains fan blades 21A-21G having mutually different outer peripheral side blade tip anglesβ, and is provided so as to make the stagger anglesαof a plurality of fan blades 21 equal to one another. COPYRIGHT: (C)2011,JPO&INPIT |
