Fan drive with water slinger seal

A fan drive and water slinger seal for a vertically mounted electric motor positioned below a liquid sump into which a rotor shaft of the motor is connected, comprising;

• an electric motor having an upper endshield surrounding at least some portion of said motor, said endshield having a bearing housing, a bearing retained therein, and one end of a rotor shaft journaled in said bearing and vertically extending through said endshield, said shaft having a plurality of pairs of radially opposed flats extending axially along said shaft in the direction away from said bearing and toward said sump, a radial annular groove between the first of two sets of paired flats and after the second set of said flats;
• a means, having a central opening to accommodate the passage therethrough of said rotor shaft, said opening having a surrounding vertical lip, said means mounted to and above said endshield for capturing and disposing of liquid reaching said means from said sump away from said motor;
• a fan means having a centrally disposed opening surrounded by a cylindrical-shaped hub having a pair of opposed flats within said hub to register with the first set of opposed flats on said shaft from said endshield when said fan means is mounted thereon, said fan means additionally having an integral, spring-like finger extending inward and movable radially from a position axially upon the inner cylindrical surface of said hub to engage said first annular, radial groove on said shaft from said upper endshield, locking said fan means axially upon said shaft;
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• a slinger seal means having a central circular opening surrounded by a collar member having a resilient cylindrical bore, and an O-ring-like annular projection disposed intermediate therein, said bore sealing upon the adjacent cylindrical portions of said rotor shaft, and said O-ring projection sealably engaging the second of said annular grooves upon said shaft passing therethrough, and for slinging liquid leakage from said sump to said liquid capturing and disposing means.

A fan drive and water slinger seal for a vertically mounted electric motor positioned below a liquid sump into which a rotor shaft of the motor can be connected, comprising;

• an electric motor having an upper endshield surrounding at least some portion of said motor, said endshield having a bearing housing, a bearing retained therein, and one end of a rotor shaft journaled in said bearing and vertically extending through said endshield, said shaft having a plurality of pairs of radially opposed flats extending axially along and to the end of said shaft in the direction away from said bearing and toward said sump, a radial, annular groove between the first of two sets of paired flats and after the second set of said flats;
• a liquid drip pan mounted to and above said endshield, said drip pan having a central opening to accommodate said rotor shaft passing therethrough and further having an upwardly extending lip about said central opening and an upwardly extending peripheral sidewall;
• a drain means extending laterally outward from said drip pan and sidewalls beyond the outer peripheral limits of said front endshield to dispose of drip pan collected liquid away from said motor;
• a flat, circular, disk-shaped fan having a centrally located opening and, on a face adjacent the end wall of said upper endshield, an integral, centrally disposed hub about said opening, and a plurality of integrally formed blades extending radially outward from said hub, said hub having an extension disposed upon the fan face opposite said upper endshield and further having a generally cylindrical inner surface with a pair of diametrically opposed flats disposed between said hub extension and a point intermediate between the two axial extremes of said hub, and a radially disposed, spring-like finger located axially along and in the direction of said hub extension and extending radially inward beyond said cylindrical inner surface for engaging the first of said annular radial grooves on said shaft from said upper endshield to lock said fan against axial movement when said fan is disposed upon said shaft with said blades facing said upper endshield and the flats of said hub are located in registration with the corresponding flats on said shaft to prevent circumferential slippage between the two;
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• a flat, disk-shaped, liquid-resistant slinger seal having a slinger ring with a circular opening, peripherally surrounded by an integral collar member extending normal therefrom to snugly fit about said rotor shaft passing therethrough for liquid exclusion from about said shaft, the end of said collar member opposite said slinger ring resting directly upon said hub extension, said sleeve further having an "O"-ring-like, raised annular projection about its interior cylindrical surface to sealably engage the second of said annular radial grooves on said shaft from said upper endshield, said slinger ring spaced from and sized to overlap said upwardly extending lip surrounding said central circular opening in said drip pan, and additionally having a peripheral edge rounded in the direction of said sleeve in spaced, opposed, and overlapping relation with said upward extending lip about said central circular aperture of said drip pan, the spacing between said two overlapping lips being such as to prevent direct, splash, or liquid miniscus passage into said drip pan central circular aperture.