SUBMERGED ELECTRIC PROPELLER FOR ROBOTS AND SUBMARINE VEHICLES

摘要

The invention relates to an electric propeller for robots and submarine vehicles as well as for floating vehicles with submerged propeller. According to the invention, the electric propeller consists of a synchronous type electric motor having a stator (2), made of siliceous rolled plate, provided with a poly-phase winding (3), embedded in a composite material, and a rotor (14), made of a steel core (22) on which there are attached some magnets (18), perpendicularly magnetized on the surface of attaching to the core (22) of the rotor (14), the number of magnets being equal to the number of poles of the winding (3) on the stator (2), two adjacent magnets having opposed magnetic polarity, the core (22) and the magnets (18) being also embedded in the composite material, some Hall transducers (13) mounted as close as possible to the core (22) of the rotor (14), on a printed circuit (21), embedded in composite material, there being made a cylindrical form which is attached to a shield (6) of the motor, made of cast composite material and provided with some orifices for connecting the transducers (13) and the ends of the winding (3) to an electronic power circuit (7), also embedded in composite material, thus there being made a disk-shaped piece, mounted, by attaching, to the shield (6), the electric motor together with the electronic power circuit (7) being protected by a casing (1), made of composite material, epoxy reinforced with glass fiber, provided with some through holes (12) for allowing the water to get inside and an orifice for a supply cable, as well as a screw (16) made also of composite material and mounted on an axle (19) of the rotor (14) of the electric motor.