A method and a pool cleaning robot that may include (i) a turbine that is at least partially disposed within a fluid path of the robot to extract energy from flow of fluid through the fluid path; (ii) an electrical generator for providing electrical power thereto and adapted to be driven by the turbine; (iii) a rechargeable power source arranged to be charged by the electrical generator, and (iv) a controller that is arranged to direct the pool cleaning robot to be positioned in a certain location in which a flow level of fluid that is circulated by a pool fluid circulation system is higher than a flow level of the fluid within a majority of the pool, wherein when positioned at the certain location the fluid that is circulated by the pool fluid circulation system passes through the fluid path.

An adapter for a pool cleaning system is provided. The adapter includes a base member having a top and a bottom surface. The adapter also includes six upper ports coupled to the top surface of the base member, each upper port including an upper aperture extending through the upper port and through the base member. The adapter further includes five lower ports coupled to the bottom surface of the base member, each lower port including a lower aperture extending through the lower port and through the base member. In some embodiments, four of lower ports are in fluid communication four of the upper ports and one of the lower ports is in fluid communication with two of the upper ports.

Power supplies for pool and spa equipment are disclosed. In one embodiment, the power supply includes a buoyant housing, a peripheral float, at least one solar cell positioned on the buoyant housing for collecting sunlight and converting same to electrical energy, and a power cable for interconnecting the power supply and pool/spa equipment. In other embodiments, first and second inductive power couplings are provided for powering pool and spa equipment. The power couplings can also be installed using existing plumbing features of the pool or spa.

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 method and a pool cleaning robot that may include a housing; an opening formed in the housing; an impeller that is configured to rotate and to induce fluid to flow through the pool cleaning robot; a filter for filtering fluid that flows through the pool cleaning robot; and wherein at least one of element the filter and the impeller is configured to exit the pool cleaning robot through the opening.

A non-chemical sanitation system for a body of water comprises a floating base, an internal hydro-electric power generator, and one or more sanitizing mechanisms electrically powered by the hydro-electric power generator, where the hydro-electric power generator derives its energy from water pressure produced by a pool pump. In some embodiments, the one or more non-chemical sanitizing mechanisms comprise one or more ultraviolet LED lights. In some embodiments, the one or more non-chemical sanitizing mechanisms comprise one or more ionizers. In some embodiments, the system is connected to a filter pipe and filter of a pool and the hydro-electric power generator is placed within the path of water flowing to the pool filter in order to generate power and power the one or more sanitizing mechanisms.

Automatic swimming pool cleaners and components thereof are described. The cleaners may provide dual filtration of debris suspended in water of pools as well as a fluid path allowing some water to by-pass one of the two filters. They also may include any of all components such as multi-section inlet tubes, Venturi jets, nozzles exhausting water onto rotatable vanes, brushes, downforce turbines, and mechanisms for adjusting water flow through thrust jets or sweep tails.

Disclosed herein are a steering system for a suction cleaning device, a locomotion system for a pool cleaner, and a turbine for use in an automatic cleaner. The steering system includes a fluid driven turbine that rotates a cam gear that is interconnected with a cam wheel for directing a drive pinion. The drive pinion is positionable in a plurality of positions to drive a nose cone that steers the suction cleaning device. The locomotion system includes first and second A-frame arms that respectively engage first and second bearings about first and second eccentrics of a turbine. Rotation of the turbine causes the first and second A-frame arms to rotate back and forth driving associated walking pod assemblies. The turbine includes a turbine rotor and a plurality of vanes connected to the turbine rotor. The plurality of vanes including lateral edges having lateral open regions to facilitate debris-removing efficiency.

An adapter for a pool cleaning system is provided. The adapter includes a base member having a top and a bottom surface. The adapter also includes six upper ports coupled to the top surface of the base member, each upper port including an upper aperture extending through the upper port and through the base member. The adapter further includes five lower ports coupled to the bottom surface of the base member, each lower port including a lower aperture extending through the lower port and through the base member. In some embodiments, four of lower ports are in fluid communication four of the upper ports and one of the lower ports is in fluid communication with two of the upper ports.

A non-chemical sanitation system for a body of water comprises a floating base, an internal hydro-electric power generator, and one or more sanitizing mechanisms electrically powered by the hydro-electric power generator, where the hydro-electric power generator derives its energy from water pressure produced by a pool pump. In some embodiments, the one or more non-chemical sanitizing mechanisms comprise one or more ultraviolet LED lights. In some embodiments, the one or more non-chemical sanitizing mechanisms comprise one or more ionizers. In some embodiments, the system is connected to a filter pipe and filter of a pool and the hydro-electric power generator is placed within the path of water flowing to the pool filter in order to generate power and power the one or more sanitizing mechanisms.