A vacuum cleaner and fluid separator includes a vortex generating device which generate forced vortex based on the Coanda effect. The generated vortex is the laminar swirling flow causing the fluid particles to be separated into layers. The fluid with bigger particles swirls at the outer layer, while the fluid with smaller particles swirls at the inner layer. The separator further includes stacked cones with a narrow space between the stacked cones to promote separation. The fluid separator further includes the reverse swirl facilitating cone to separate the fluid with bigger particles to be contained in the fluid storage chamber with bigger particles, and draw partial fluid swirling at the inner layer through the connection channel recycle back to the separation system. The vacuum cleaner further includes the preliminary separating section that separate big impurities out before the separation process for the fluid with smaller particles.