US Patent 9865852 Energy storage container with vortex separator

A vortex separator includes: a housing having a cylindrical chamber therein; an inlet through a mantle of the cylindrical chamber, the inlet positioned at a proximal end of the housing; a pipe that enters the housing at the proximal end and extends axially through the cylindrical chamber toward a distal end of the housing which is closed; an outlet through the mantle, the outlet positioned at the distal end; and a catch basin at the outlet.