CONTROLLER FOR AXIAL FLOW BLOWER

PURPOSE:To drastically improve the efficiency in the large and small air quantity regions by installing each function generator for generating each signal for controlling the static blade in each stage, position controller for outputting each angular adjustment signal, and each rotary driving means for rotary-driving the static blade. CONSTITUTION:Each function generator 14a-14c receives a control signal 20s, and generates a signal for controlling a corresponding static blade so that the whole efficiency of a blower becomes max., and the signal is sent to each position controller 11a-11c. Each position controller 11a-11c revolution-drives each static blade through a control drive 10a-10c. Since the static blade in each stage is separately adjusted so that the whole efficiency becomes max., the efficiency can be improved drastically in the large and small air quantity regions.