A suction head for submersible use in the water of an artificial pool. The suction head having a body provided with a suction duct and a suction pump placed inside the suction duct. The suction pump includes an electric motor coupled to a propeller. The rotation of the propeller producing suction along the suction duct between a suction mouth and an upper opening of the duct. The suction head further includes a central deflector placed between the motor and the propeller so as to prevent bulky debris from piling up below the propeller and discharging it to the periphery of the suction duct.

Methods and apparatus are disclosed for an improved underwater vacuum cleaning system. Urging elements are provided on a vacuum head to encourage debris, especially large pieces of underwater debris, to matriculate under the head or otherwise toward the vacuum opening, rather than traveling over the head or otherwise NOT toward the vacuum opening. Various embodiments of engagement elements are disclosed between the vacuum head and a vacuum hose to improve the connection therebetween.

An in-water suction cleaner includes a portable housing for disposing at water of a pool or tank, a motorized unit supported in the portable housing for vacuuming a suction cavity of the portable housing to suck the water in the suction cavity out of the portable housing through a fluid outlet of the portable housing so as to create a suction at a fluid inlet of the portable housing, a manual scrubbing arrangement detachably coupled at the fluid inlet of the portable housing for scrubbing pool or tank surfaces and for sucking the water into the suction cavity at the same time, and a filtering element replaceably disposed in the suction cavity for filtering the water from the fluid inlet to the fluid outlet through the suction cavity so as to ensure the water after filtered being discharged back to the pool or tank via the fluid outlet.

The invention relates to a pool cleaning apparatus including: a cleaning unit (100), at least one hydraulic system for circulating a liquid between at least one liquid inlet (103) and at least one liquid outlet (104) and through a filtration device of the cleaning unit (100), a pump suitable for forcing the circulation of water between the liquid inlet (103) and the liquid outlet (104) and through the filtration device, drive and guide means for moving the cleaning unit, and means for controlling said drive and guide means. The pool cleaning apparatus includes at least one debris detection means placed in the hydraulic system of the cleaning unit (100).

The present invention relates to a water energy cleaner for a pool, including a housing which is provided with a water inlet in the middle position of the bottom; a hydraulic motor used for providing power for the cleaner; travelling mechanisms used for travelling; a reversing mechanism used for changing a travelling direction; and a rotating swing joint mechanism used for connecting an external water outlet pipe and capable of swinging and rotating back and forth relative to the housing, The rotating swing joint mechanism of the present invention can swing and rotate back and forth relative to the travelling direction of the cleaner, which is beneficial for preventing the cleaner from being easily affected by a water pipe when the cleaner climbs up the wall of the pool for cleaning.

A swimming pool cleaner may operate within a pool during a cleaning cycle. The duration of the cleaning cycle may be tailored, or optimized, for the pool by determining a maximum length of time between, for example, a rotation of the cleaner and when it next detects a wall of the pool during a designated interval. As another example, deducing information relating to rotation speed of the cleaner also may be useful in determining the tailored cleaning cycle.

A sled for a pool cover pump for keeping the pump from tipping over in use, reducing pump clogging and guarding against damaging a plastic pool cover. The sled has a base unit with a platform mounted on runners which spread the load on the pool cover and which elevate the pool cover pump above the pool cover a distance that the platform serves as a gate or doctor blade preventing leaves and other debris from getting into the pump inlet.

A device for vacuuming debris from the bottom of a pool of water. The device comprises a housing which forms a frustoconical cavity having a mouth on the lower surface and an exit hole on the top of the frustoconical cavity. A hose is attached on one end to the exit hole and in fluid connection with a source of vacuum.

An apparatus for removing a layer of sediment which has settled on the bottom of a large water body that includes a structural frame configured to contain a bottom water flow and avoid a re-suspension of sediment outside the vicinity of the structural frame. The structural frame has a control zone configured for containing liquid and suspended particles dispersed during removal of bottom sediment in a suctioning area that is at least about 3 square feet. A sediment removing vacuum unit is operably associated with the structural frame to conduct a suctioned bottom water flow.

A device for cleaning a swimming pool, containing water and comprising a bottom surface thereof, comprises a vacuum head defining a sweeping side, an inlet port, an outlet port and an internal cavity in fluid communication with the inlet and outlet ports. The sweeping side provides for being swept along the bottom surface of the swimming pool and defines an opening leading to the internal cavity. The outlet port provides for being in fluid communication with a vacuum for subjecting the internal cavity to a vacuum force for suctioning water and debris. The inlet port provides for being in fluid communication with a water source for injecting water into the inner cavity during suctioning. The vacuum force via the outlet port in tandem with water injection via the inlet port provides for the vacuum head to suction water and debris via the opening for discharge via the outlet port.