| 摘要 |
An electric vacuum cleaner wherein a first air passageway for a dust-containing air flow and a second air passageway for an air flow to rotate an air turbine which drives a dust removing device, are formed upstream of an electrically operated fan within the body of the vacuum cleaner, and the first and second air passageways are selectively switched from one another, whereby the normal cleaning operation and an operation to remove the dust deposited on a dust filter disposed in the first air passageway are selectively obtained.
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