| 摘要 |
The vacuum cleaner is constructed that a number of intake induction plates are formed in an inner circumference face of an air suction entrance so that sucked air becomes eddy; a cone shape filter of at least more than one is housed in the inside of the cleaner body and is placed so as to be supported by a supporting frame; thereby sucked air in eddy is exhausted rotating in a shaft of a vertical point of the cone shape filter so that centrifugal force is generated in the inside of the cleaner body; and sucked dust is divided into a central side and a peripheral side according to a difference of specific gravity within the cleaner body and then is filtered. Thus even very fine dust can be filtered efficiently and also a filter cleaning period lengthens.
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