| 摘要 |
PROBLEM TO BE SOLVED: To provide a cleaner with a high suction force within a range of electric current capacity of a braker in an ordinary home by raising the suction force by a simple constitution even when the suction force tends to decrease. SOLUTION: A relay coil 7a is connected to an output of an electric current detecting part 6 and when it is connected in series to a suction force setting part 1 and the suction force is high, a relay part connected to NC contact points in parallel is provided at a phase cut setting part 5 for reducing amt. of passing electric current to a fan motor 3 and when the suction force is lowered, output of the electric current detecting part 6 is decreased and electric power supply to the relay coil 7a is decreased and a relay contact point 7b makes a short circuit with a phase cut setting part 5 and increases the amt. of electric current passing the through fan motor 3 to increase the suction force. |
