Nidec Motor Corporation

Jose L Vadillo

Raymond D Heilman

Donald E Morgan

John G Schrader

Patrick M Jones

James D Ellis, Ii

A cooling system is provided for an electric motor having control circuitry and including a motor housing surrounding the motor. The motor drives at least one radial fan at one end thereof for directing airflow through the motor housing across the motor. A fan housing encloses the cooling fan and defines a diverter chamber radially outboard of the fan that is sized to divert a portion of the airflow away from the electric motor. A control box contains the control circuitry and includes a base having a heat sink for contacting the control circuitry. The base defines a plenum in communication with the diverter chamber and a channel in communication with the plenum and the heat sink to direct the diverted airflow across the heat sink.

Cooling system for a motor and associated electronics

A fluid deflecting baffle is provided for use on an electric motor to be used in an environment where liquid may otherwise pass through a vent opening in an endshield of the motor. The baffle is secureable to the endshield and extends in a partial covering relationship with the vent opening. The baffle includes a vent passage therethrough and has at least one liquid flow obstructing louver that extends across the vent opening to deflect liquid away from the vent passage while allowing venting air to flow through the vent passage. The louver includes a generally flat liquid deflection surface that is disposed at an oblique angle relative to the axis of the motor and at least partially faces a venting direction of incoming air and fluid.

Liquid deflecting baffle for an electric motor

A radial fan comprises a base with a plurality of straight primary blades radially oriented and substantially uniformly spaced around the circumference of the base. A like plurality of splitter vanes are interspersed between successive primary blades. The splitter vanes have a length that is about 50-70% of the length of the primary blades. The inner edges of the splitter vanes are angled to improve airflow through the inlet area between primary blades while reducing the occurrence of vortices and recirculation. The addition of splitter vanes increases the airflow capacity of the fan without any significant increase in operating noise.

Growing community of inventors

St. Louis, MO, United States of America

Jose L Vadillo