Brushless DC ring motor cooling system
AssigneeHorton, Inc.
InventorsChristopher A. Nelson, Bradford K. Palmer
Life of this patent
Estimating the term…
Abstract
A cooling system for a vehicle includes a shroud attachable to a fixed portion of the vehicle. A stator assembly for a brushless DC ring motor is attached to at least one mounting support of the shroud. A cooling fan is piloted on the stator assembly, and includes a ring supporting a plurality of fan blades for sweeping an area inside the shroud. A rotor assembly for the brushless DC ring motor is attached to the ring of the cooling fan. The rotor assembly confronts the stator assembly around an outer diameter of the stator assembly. The cooling system is controlled by an electronic controller to rotate the cooling fan to provide appropriate cooling for the vehicle.
Claims15
A brushless DC ring motor comprising:
- a stator assembly having an outer surface and a plurality of laminations exposed around the outer surface;
- a rotor assembly piloted on the stator assembly, the rotor assembly having a back-iron ring and a plurality of permanent magnets on an inner surface of the back-iron ring confronting the plurality of laminations exposed around the outer surface of the stator assembly;
- a shroud attachable to a fixed portion of a vehicle, the shroud including at least one mounting support, wherein the stator assembly is attached to said at least one mounting support and
- a cooling fan piloted on the stator assembly, the cooling fan including a support ring supporting a plurality of fan blades for sweeping an area inside the shroud.
Dependencies are inferred from the claim text.