Blower control device, the blower control method and a blower control program

摘要

PROBLEM TO BE SOLVED: To enable further suppression of noise.;SOLUTION: A blower control device 1 changes a PQ characteristic in a second table 17b in such a manner that an operating point (Q_N, P_N) on the PQ characteristic in the second table 17b agrees with an operating point (Q₀, P₀) on a PQ characteristic in a first table 17a. At this time, the blower control device 1 changes the PQ characteristic in the second table 17b at a rate based on Q_N and Q₀. Furthermore, the blower control device 1 changes a load noise characteristic in the second table 17b at a rate based on Q_N and Q₀. Then, the blower control device 1 calculates load noise corresponding to the operating point (Q₀, P₀) with respect to each rotation frequency ratio from the changed load noise characteristic. Subsequently, the blower control device 1 determines a rotation frequency ratio corresponding to the lowest load noise as a rotation frequency ratio at which a plurality of fans 3a, 3b is rotated.;COPYRIGHT: (C)2013,JPO&INPIT