A pool cleaning robot that may include a filtering unit for filtering fluid that passes through the filtering unit; a calorimetric sensor for sensing a cleanliness related parameter of the filtering unit while the pool cleaning robot is submerged in the fluid; and a controller that is configured to at least assist in determining, based on the cleanliness related parameter of the filtering unit, a cleanliness of the filtering unit.

A pool cleaner including a turbine assembly, a timer assembly, and a scrubber assembly. The timer assembly is configured to rotate the turbine assembly in a first direction and a second direction. The scrubber assembly is configured to rotate in a forward direction when the turbine assembly rotates in the first direction, and to rotate in a rearward direction when the turbine assembly rotates in the second direction.

A pool cleaning robot that has a water jet electrohydraulic motorized propulsion/pump unit and a waste-collecting body having a battery for powering the unit, the unit and the battery being contained inside a rotary and sealed turret, external to the body of the robot. The robot advantageously has an automatic direction reversing device having a vane secured to the turret with a first end stop and second end stops.

Detailed are valve assemblies principally for use as part of in-floor cleaning systems for swimming pools. The assemblies may use mechanisms for converting continuous rotation into discontinuous rotation, changing the timing of water distribution to different outlet of the assemblies. One such mechanism includes both an impeller, whose blades are rotated continuously by impingement of pressurized water, and a Geneva drive, whose driven wheel is rotated discontinuously by one or more associated drive wheels.

Components of automatic pool cleaners (APCs) are detailed. The components may include brushes configured to attach to blades of scrubbers of the APCs. The flexible brushes may rotate as their associated blades rotate and have fingers which flex so as to adduce contact between a to-be-cleaned pool or spa surface and bristles protruding outward from sides of the fingers.

A fluid distribution system for an underwater pool cleaner comprises an inlet body having an inlet for receiving a supply of pressurized fluid, a valve assembly body in fluid communication with the inlet of the inlet body and including a plurality of fluid outlets, a first one of the outlets provides fluid for propelling the underwater pool cleaner in a forward direction and a second one of the outlets provides fluid for propelling the underwater pool cleaner in a reverse direction, and a valve subassembly fluidicly driven by the supply of pressurized fluid and periodically switching the supply of pressurized fluid from the first one of the outlets to the second one of the outlets to periodically change direction of propulsion of the underwater pool cleaner.

The present disclosure relates to an electric top bottom cleaner for pools or spas that includes internal pumps for suction and propulsion purposes. The pool cleaner includes a housing having a front end, a rear end, a first side, a second side, a bottom wall, and a top wall, with a first aperture extending through the bottom wall and a second aperture extending through the top wall. A tube extends through the housing between the first aperture and the second aperture. A debris retention mechanism is connectable to the housing. A first pump, a second pump, and a third pump are positioned within the housing.

A cleaning robot may be provided and may include a housing comprising at least one inlet and an outlet; a filtering unit for filtering fluid; a bypass mechanism for bypassing the filtering unit; and a fluid suction unit that is arranged to direct towards the outlet fluid that (a) passes through the at least one inlet and (b) passes through at least one out of the filtering unit and the bypass mechanism.

A pool cleaner assembly includes a pool cleaner body supported for motion over an underwater pool surface, the pool cleaner body defining a water source connection and a suction opening on a lower surface thereof through which debris is removed from the underwater pool surface. The assembly further includes a steering device having a first steering device end configured for connection to a water hose and a second steering device end connected to the water source connection of the pool cleaner body, the steering device being operable to generate relative rotational motion between the first and second steering device ends.

A pool cleaning robot that has a water jet electrohydraulic motorized propulsion/pump unit and a waste-collecting body having a battery for powering said unit, the unit and the battery being contained inside a rotary and sealed turret, external to the body of the robot. The robot advantageously has an automatic direction reversing device having a vane secured to the turret with a first end stop and second end stops.