Patent ID: 7120965
Filing Date: 2006-10-17
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 the 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 the 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 a flow regulating valve is placed in the second airflow duct to regulate flow of air through the junction of the first and the second airflow duct into the first airflow duct.