Patent ID: 8992648
Filing Date: 2015-03-31
Classification: B01D,B04C,F04B

Abstract:
1. A swirl flow generator for removing foreign matters contained in air to purify the air, comprising: a cylindrical blade portion which is formed by arranging a plurality of blades in a cylindrical shape so as to extend in an axial direction from an axially-upper side toward an axially-lower side along an inner peripheral surface of a swirl flow generating chamber through which the air flows in the axial direction and so as to tilt in a circumference direction with inward faces of the blades at angles to respective radii of the swirl flow generating chamber and parallel to the axis of the swirl flow generating chamber, so that the air flowed in the axial direction along the blades is radially jetted inward to form swirl flow; a separation cylinder surrounding the cylindrical blade portion; and an annular base portion which is arranged in a lower end of the cylindrical blade portion and is fitted to an inner peripheral surface of the separation cylinder to as to prevent air flow axially bypassing the cylindrical blade portion.