Electric blower and electric cleaner using same

摘要

An electric blower (101) comprises a motor unit (102) having a stator (116) and a rotor (109), a fan unit (103) having an impeller (118) attached to an output shaft (108) of the rotor (109), and a circuit unit (104) having a heat-generating component for controlling electric power to the motor unit (102). The circuit unit (104) is disposed in an airflow path of air expelled from an outer periphery of the impeller (118) toward the stator (116) and the rotor (109) of the motor unit (102). The air suctioned by rotation of the impeller (118) cools the heat-generating component in the circuit unit (104) before cooling the stator (116) and the rotor (109).