Self-propelled underwater electromechanical apparatus for cleaning the bottom and walls of swimming pools
First Claim
1. A self-propelled, underwater, electromechanical apparatus for cleaning a bottom and walls of swimming pools, comprisingan apparatus body provided with a water suction opening and a water outlet,a single electric motor unit in said body,a circulating turbine connected to said electric motor for circulating water from said water suction opening to said water outlet through a filter system and,a mechanical driving unit connected to said electric motor and,a roller travel system connected to said driving unit, said driving unit transmitting forward, backward and rotational movement to said roller travel system, wherein at least one of said electric motor and said driving unit has an open structure exposed to the swimming-pool water.
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Abstract
Self-propelled underwater electromechanical apparatus for cleaning the bottom and the walls of swimming pools, having an electric motor which operates a propeller turbine for circulating the water and a driving unit for transmitting movement to a roller travel system. The electric motor and the driving unit are made with an open structure in which the swimming-pool water freely circulates. The electric motor is of the brushless type and both the winding of its rotor and that of its stator are embedded in an impermeable resin. The driving unit has a reduction unit with an output shaft operating two roller travel systems mounted on opposite sides of the apparatus. Devices for achieving reversal of movement consisting of a shaft extension oscillating between two different working positions, are arranged between the output shaft and the two travel systems.
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Citations
20 Claims
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1. A self-propelled, underwater, electromechanical apparatus for cleaning a bottom and walls of swimming pools, comprising
an apparatus body provided with a water suction opening and a water outlet, a single electric motor unit in said body, a circulating turbine connected to said electric motor for circulating water from said water suction opening to said water outlet through a filter system and, a mechanical driving unit connected to said electric motor and, a roller travel system connected to said driving unit, said driving unit transmitting forward, backward and rotational movement to said roller travel system, wherein at least one of said electric motor and said driving unit has an open structure exposed to the swimming-pool water.
Specification