Patent ID: 7207083

Claim:
An electric vacuum cleaner comprising: an electric vacuum cleaner main body within which an electrically driven blower is installed; a cyclonic separation cylinder provided in said vacuum cleaner main body for flowing dust-containing air sucked from a suction port into an inlet tube and removing the dust according to centrifugal separation; an inner cylinder provided in said cyclonic separation cylinder and having an exhaust air port; a dust collecting case provided in said electric vacuum cleaner main body and having an opening which communicates with said cyclonic separation cylinder and for receiving dust which has been separated in the cyclonic separation cylinder; a filter arranged in said dust collecting case; and a communicating passage formed separately from said cyclonic separation cylinder and said dust collecting case and for communicating with said exhaust air port; wherein after air passed through said filter and air blown out from said communicating passage have merged, said merged air is sucked into said electrically driven blower.