Swimming pool cleaning apparatus having a debris separation device operating by centrifugal spinning and filtration

Device for separating out debris suspended in a liquid, for a swimming pool cleaning apparatus, said cleaning apparatus comprising:

• a body,
• at least one hydraulic circuit circulating liquid between at least one liquid inlet and at least one liquid outlet, and through the device for separating out debris suspended in the liquid,
• at least one fluid circulation pump installed in the hydraulic circuit, the device for separating out debris suspended in a liquid including means for the centrifugal spinning of the debris suspended in the liquid and a tank for collecting said centrifugally separated debris,
• wherein the separation device includes (i) a liquid supply duct opening into a filtration chamber defining a substantially cylindrical volume, tangentially to a cylindrical wall of said filtration chamber, said filtration chamber communicating with the collecting tank that collects the centrifugally separated debris, and (ii) a deflector formed by a portion of the cylindrical wall that is extended above the collecting tank, and wherein the deflector determines an angular opening of about 60° from the filtration chamber to the collecting tank.

Swimming pool cleaning apparatus comprising:

• a. a body having an inlet and an outlet;
• b. members for driving and guiding the body on an immersed surface of a swimming pool;
• c. a pump configured to draw water through the inlet;
• and
• d. a debris separation device positioned in a flow path between the inlet and the outlet and comprising (i) a filtration chamber having a cylindrical wall and defining a longitudinal axis, (ii) a liquid supply duct having a lower portion extending from the inlet and an upper portion opening into the filtration chamber tangentially to the cylindrical wall above the longitudinal axis, and (iii) a tank for collecting debris separated from water in the flow path.