| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of reducing operating sound and noise other than vibration produced by the rotation of an electric blower in a noise-reducing time zone. <P>SOLUTION: The vacuum cleaner includes: a blower for generating a suction air; a suction port body having a suction port to suck in dust on the suction air; a brush provided in the suction port; a motor provided in the suction port body to rotate the brush; and a control part for setting the motor speed in a specific time zone to a value smaller than the motor speed in a time zone different from the specific time zone. <P>COPYRIGHT: (C)2012,JPO&INPIT |
