1, except that "Micro Cooling Fan" blower structural blower generally consists of the impeller, housing, collector, motor and transmission parts (such as spindles, pulleys, bearings, belt etc.). By the roulette wheel, the blades (number of blades is generally 8 to 16), wheel covers, axle plate components. Cabinet by the snail plate, side and leg components. DC Blower can use the blade forward or backward blades, wind pressure requirements for broader adaptation. And do silencer inside handle on the noise performance has obvious advantages. Motor and fan is typically connected by a shaft.
     2, "Micro Cooling Fan" in general by the impeller, chassis, collector and electrical components, the impeller blades and hub by the composition of the cabinet by the duct, the frame plate and brackets. "Micro Cooling Fan" blade diameter limited shell diameter. Generally in the fan motor.