Patent ID: 8725460
Filing Date: 2014-05-13
Classification: F04D

Abstract:
1. An alerting method for fan failure, the alerting method comprising following steps: a. a microprocessor reading a target value of rotating speed of a fan motor from a customer system; b. the microprocessor calculating a first predetermining current value, a second predetermining current value, a predetermining duration, a predetermining time, a predetermining range of phase voltage width, a predetermining value of temperature, a predetermining value of vibrating, a predetermining value of moisture, a predetermining value of air pressure and a predetermining value of air volume according to the target value of rotating speed of the fan motor; c. the microprocessor reading a current value of rotating speed of the fan motor; d. the microprocessor adding one time in the failure recorded in a count when the current value of rotating speed of the fan motor is lower than the target value of rotating speed of the fan motor compared by the microprocessor; e. the microprocessor reading a current peak value of the fan motor; f. the microprocessor adding one time in the failure recorded in the count when the current peak value of the fan motor is higher than the first predetermining current value compared by the microprocessor; g. the microprocessor reading a duration of the current which is higher than the second predetermining current value of the fan motor; h. the microprocessor adding one time in the failure recorded in the count when the duration is longer than the predetermining duration compared by the microprocessor; and i. the microprocessor sending an alarm signal when the failure recorded in the count is larger than the predetermining time compared by the microprocessor.