CYCLONIC SEPARATION DEVICE

摘要

The present invention relates to a separation device (14) for separating a cyclone chamber (15) from a collection chamber (16) of a cyclonic separator (10). The separation device (14) has a guide member (17) that comprises a leading end (17A), a trailing end (17B), and a guide surface (17C). The guide surface guides debris entrained in an airflow in the cyclone chamber in a helical path about an axis (X-X) of the separation device (14) and into the collection chamber (16). The guide surface extends about the axis of the separation device (14) through an angle of less than 360 degrees for allowing debris in the cyclone chamber (15) to also pass into the collection chamber (16) from the cyclone chamber in an axial direction. The leading end (17A) of the guide member (17) is at an angle (a) between 30 degrees and 60 degrees towards the cyclone chamber (15) with respect to the axis (X-X) of the separation device (14) to promote a helical flow of air and debris flowing over the guide surface.