Centrifugal dirt separation configurations for household-type and shop-type vacuum cleaners

A vacuum cleaner, comprising:

• a handle;
• and
• a floor housing to which the handle is pivotally connected, wherein
• the floor housing further comprises:
• a suction fan motor;
• a suction fan driven by the suction fan motor and including a plurality of fan blades driven at a high velocity by the suction fan motor to suck a fluid from a first side of the fan to a second side of the fan;
• a pick up head positioned adjacent to a floor and in fluid communication with the suction fan;
• and
• a cyclonic separator device comprising:
• a cyclone chamber having a cylindrical shape with a predetermined diameter, the cyclone chamber further comprising:
• a tangential inlet duct positioned on a first longitudinal end of the cyclone chamber;
• an opening formed in an outer wall of the cyclone chamber at a second end of the cyclone chamber, opposite the inlet through which particles exit the cyclone chamber;
• and
• a center exit duct mounted substantially in the center of the cyclone chamber having an inlet opening positioned such the centrifuged fluid without particles flows into the center exit duct and out of the cyclone chamber, wherein
• the pick up head and suction fan are connected in fluid communication with the cyclone chamber such that fluid flows from the pick up head through the tangential inlet into the cyclone chamber and rotates therein at high velocity such that particles in the fluid are forced out to the inner surface of the outer wall of the cyclone chamber and are discharged through the opening.