Patent ID: 7353565
Filing Date: 2008-04-08
Classification: A47L,Y10S

Abstract:
1. A battery-powered vacuum cleaner comprising: a battery pack including a plurality of secondary batteries; a battery pack container containing a battery pack; a motor driven for operation by power supplied by the battery pack; a fan driven by the motor to suck air; a dust cup for separating dust from air sucked therein by the fan and storing the dust separated from the sucked air; a housing containing the battery pack container, the motor, the fan and the dust cup, and provided with a first suction opening through which external air is sucked; a first airflow duct for guiding air sucked in by the fan through the dust cup to the motor; and a second airflow duct, for guiding air for cooling the battery pack through the battery pack, joined to the first airflow duct at a junction on an upstream side of the fan, wherein the second airflow duct is provided with a projection projecting into the first airflow duct at its upstream end at the junction.