| 摘要 |
PROBLEM TO BE SOLVED: To reduce vibration, cogging and power consumption in a multiplex series type axial blower.SOLUTION: There is provided a double reversing axial blower device 10 in which an axial blower 100 provided with a single-phase motor capable of performing a self-activation and an axial blower 200 provided with a single-phase motor not capable of performing a self-activation are axially connected to each other. A driving current is supplied to the single-phase motor of the axial blower 100 at the time of energization and a driving current is not supplied to the single-phase motor of the axial blower 200. The axial blower 200 receives an axial flow generated by the axial blower 100 and is rotated. Then, at the stage where the axial blower 200 starts to rotate, the driving current is supplied to the axial blower 200. Application of the single-phase motor not capable of performing a self-activation causes vibration, cogging and power consumption to be reduced. |
