Patent ID: 7496988

Claim:
An electric vacuum cleaner comprising: a dust separation section provided at a suction air passage between a suction opening of a vacuum cleaner main body and an intake opening of a motor fan to separate dust sucked from the suction opening with air; a dust collection section provided at the suction air passage for collecting the dust separated from the air at the dust separation section; a tubular passage which is communicated at a first end with the suction opening to flow in the dust sucked from the suction opening; an air guiding air passage having an air guiding opening on a peripheral wall of the tubular passage to guide air from the air guiding opening to the intake opening of the motor fan without passing through the dust collection section; and a dust strike section which is provided at a second end of the tubular passage, wherein the dust that flows into and through the tubular passage hits the dust strike section, wherein the dust collection section is provided at a lower part of the dust strike section for collecting the dust which has hit the dust strike section, and wherein a filter is provided at the air guiding opening of the tubular passage, and a diameter of the tubular passage gradually decreases linearly from the first end to the second end.