Nidec Motor Corporation

Michael E Williams

David E Lass

Gregory A Davis

Dale R Wilson

A motor assembly for powering a fluid blower includes a stator, a rotor rotatable relative to the stator about an axis of rotation, and an inner shell. The inner shell includes axially opposite first and second shell ends and encloses, at least in part, the stator and the rotor. An outer housing at least partly surrounds the inner shell such that an axially extending fluid channel is defined between the inner shell and the outer housing. A motor controller is positioned within the outer housing and is configured to control at least one operational parameter of the motor assembly. Furthermore, the motor assembly includes a flow-directing endshield located within the outer housing and adjacent the first shell end. The rotor is supported, at least in part, by the flow-directing endshield. The flow-directing endshield is fluidly interposed between the fluid channel and motor controller and is configured to direct a fluid flow between the fluid channel and the motor controller.

Motor endshield promoting controller air cooling

A motor assembly is provided for powering a blower operable to generate fluid flow. The motor assembly includes a motor, a controller assembly, and a flow director. The motor includes a rotor rotatable about an axis. The rotor includes a rotatable support body, a plurality of arcuately spaced apart magnets, and a magnet retention ring at least in part securing the magnets relative to the support body. The controller assembly includes a controller and a controller case at least substantially housing the controller. The controller extends lengthwise to present opposite first and second sides at least in part spaced from the controller case. The flow director and the controller case cooperatively direct fluid received from the blower along a flow path that at least in part extends along each of the first and second sides of the controller.

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Princeton, IN, United States of America

Michael E Williams