DOMESTIC CYCLONIC VACUUM CLEANER

摘要

PROBLEM TO BE SOLVED: To provide a cyclonic vacuum cleaner including a suction inlet connected fluidly in series to a vacuum motor for drawing a dirty airflow in through the suction inlet.SOLUTION: The suction inlet is fluidly connected downstream to a first cyclonic separator and a flow device via a flow junction. The flow junction is configured for dividing the dirty airflow into two separate airflows. A first airflow passes through the first cyclonic separator, and a second airflow passes through a second cyclonic separator, thus reducing the amount of the dirty airflow passing through the first cyclonic separator compared to the dirty airflow passing through the suction inlet. The flow device is either a second cyclonic separator, an air filter or an air turbine. A screening member is disposed upstream of the flow device for screening out some of dirt particles from the second airflow so that the dirt particles are retained in the first airflow, thus "concentrating" dust loading in the first airflow.SELECTED DRAWING: Figure 1