To improve a static pressure-air volume characteristic of an axial fan having stator vanes.
This axial fan has inner stator vanes 241 connected to a base part 2211 of a motor part, outer stator vanes 243 connected to an inner surface 231 of a housing 23, and an annular connection part 242 connecting the inner stator vanes 241 to the outer stator vanes 243. The vane width of the outer stator vane 243 is set larger than that of the inner stator vane 241, and the inclination of the outer stator vane 243 with respect to the direction of a center shaft J1 is set equal to that of the inner stator vane 241. Thereby, a component of an airflow turning in the circumferential direction is efficiently converted to a component in the center shaft J1 direction by the outer stator vanes 243 in a region distant from the center shaft J1, and influence of resistance received by the airflow is reduced even if the flow rate of air is small in a region adjacent to the center shaft J1. As a result, a sufficient air collection effect can be provided by the outer vanes 243, disturbance of the airflow on the inner vanes 241 can be prevented, and the static pressure-air volume characteristic of the axial fan can be improved.
| JPH01106999 | VENTILATION FAN |
FUKUNAGA TOSHIICHI
TATSUNO TSUNENORI
| JP2000205194A | 2000-07-25 | |||
| JP2005076590A | 2005-03-24 | |||
| JPS5641840B2 | 1981-09-30 | |||
| JPH10205497A | 1998-08-04 |
| US20050025620A1 | 2005-02-03 | |||
| US7118332B2 | 2006-10-10 | |||
| GB2344619A | 2000-06-14 |