Patent ID: 7735545

Claim:
A non-powered cleaning system for cleaning a plurality of tubes in a heat exchange system having an inlet end and a discharge end, where a fluid is used as a heat exchange medium, the fluid flowing from the inlet end into the plurality of tubes to the discharge end, the cleaning system comprising: a plurality of balls in the fluid; a ball inlet coupled to the discharge end which introduces the fluid and the plurality of balls into the cleaning system; a ball divertor unit coupled to the ball inlet which directs the plurality of balls and fluid into the ball inlet; a dual hull cyclone coupled to the ball inlet tangentially, producing a spiraling motion of the fluid, which separates a plurality of balls below a predetermined diameter from the plurality of balls and which separates debris from the fluid by centrifugal force; and a ball outlet coupled to the dual hull cyclone which introduces the plurality of balls after separation and fluid into the inlet end of the heat exchange system; wherein the dual hull cyclone comprises a primary cyclone and a secondary cyclone; the secondary cyclone of the dual hull cyclone having a plurality of apertures of a predetermined shape and size, and the secondary cyclone further being disposed within the primary cyclone, the apertures causing objects to pass from the secondary cyclone to the primary cyclone.