| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for detecting the rotation abnormality of a blower and a rotation abnormality warning device for the blower achieving easy attachment to the existing blower and miniaturization, having excellent accuracy, inexpensive, and the blower provided with the rotation abnormality warning device.SOLUTION: In this method and device, a pulsation frequency of wind generated by rotation of the blades 10b of the blower 10 is detected by a sensor 16, and the pulsation frequency or a pulsation cycle is compared with a predetermined value, thereby detecting the rotation abnormality of the blower 10. |
