| 摘要 |
PROBLEM TO BE SOLVED: To provide a self-propelled vacuum cleaner which is an air internal circulation system floating a cleaner body utilizing an air supplying pressure discharged from a powered blower, collecting dust on a floor surface, and not discharging the air to the outside of the body, and in which the body is moved utilizing a part of the air supplying pressure as the power source for moving the body. SOLUTION: The air supplying pressure discharged from the powered blower 2 is accumulated in a pressure chamber 3 and the cleaner body is floated by the pressure. The air after floating is sucked from suction ports 5 as soon as possible. In this case the dust on the floor surface 4 are sucked along with the air and collected by a dust collecting bag 7 loaded in the dust collecting chamber 6. The air after sucking is discharged into the pressure chamber again through an air suction port 8 and internal circulation is formed. The suction ports 5 and a blow up fan 11 are mounted in a rotary member arranged in the upper side of the powered blower, they suck the air going out from the pressure chamber while rotating further the fan blows up the air to prevent the same from flowing out to the outside. The floated cleaner can be moved by a small drive force because of a low moving friction resistance. COPYRIGHT: (C)2007,JPO&INPIT
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