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AssigneeWilo SE
InventorsDaniel HOEKE, Oliver DRUBEL, Henry KOHLER, Roland Edmund UMMELMANN, Heiko DOEHLER, Heiko UNGER, Volker NETSCH, Michael MEIER-WAGNER, Martin VOGT
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An electric motor as well as a manufacturing method for the electric motor and a manufacturing tool are provided, the electric motor being for a deep well vertical turbine pump and having a stator assembly that has a stator bore to hold a rotor and slots that are radially open to the inside, respectively separated from each other by a stator tooth, and in which electrical conductors made of round wire of coils of a coil assembly lie, with the distributed windings on one axial end of the coil assembly forming a winding head in which the coils are encapsulated. The winding head only extends between an inner diameter and an outer diameter which is smaller than the diameter of the stator bore in which the coil assembly is inserted axially into the slots of the stator assembly.
An electric motor for a deep well vertical turbine pump, comprising a stator assembly having a stator bore configured to hold a rotor and slots that are radially open to inside the stator bore and separated from each other by respective stator teeth tooth, electrical conductors made of round wire of coils of a coil assembly lying in the slots, distributed windings on one axial end of the coil assembly forming a winding head in which the coils are encapsulated, wherein the winding head extends only between an inner diameter and an outer diameter that is smaller than the diameter of the stator assembly, and the coil assembly is axially inserted into the slots of the stator assembly.
A tool for manufacturing a coil assembly of distributed windings for axial insertion into a stator assembly of an electric motor, the stator assembly having slots that are radially open to an inside and separated from each other by respective stator teeth, comprising a cylindrical winding support with a number of fins corresponding to the stator teeth mounted on its outer circumference and there is a respective longitudinal cavity between each two of the fins adjacent to each other in a circumferential direction of the winding support and the winding support has a rear winding support segment and a front winding support segment that is radially offset compared to the rear winding support segment, forming an annular space between the front winding support segment and the fins which is open towards an insertion end in an axial direction.
Dependencies are inferred from the claim text.