Patent ID: 6071091
Filing Date: 2000-06-06
Classification: F01D,F04D,F05D,F16C

Abstract:
An integral motor/generator and pump/turbine comprising:(a) a stator having windings therein integral with a casing;(b) a rotor mounted for rotation on a fixed axial shaft within the stator, the rotor being integral with an impeller for liquid flow;(c) a passageway through the fixed axial shaft for supplying seal liquid;(d) at least one radial liquid duct in the rotor extending radially from the fixed axial shaft to a port opening in a peripheral surface of the rotor, the radial liquid duct having liquid connection to the passageway through the fixed axial shaft to pressurize seal liquid centrifugally when the rotor rotates within the stator;(e) a first annular gap between the peripheral surface of the rotor and the casing extending on one side of the port opening;(f) a second annular gap between the peripheral surface of the rotor and the casing extending on the other side of the port opening;(g) a first thrust chamber extending inwardly from the first annular gap between a first rotor thrust surface and the casing;(h) a second thrust chamber extending inwardly from the second annular gap between a second rotor thrust surface and the casing;(i) a first return orifice from the first thrust chamber leading to the radial liquid duct in the rotor to provide a first servo liquid flow loop; and(j) a second return orifice from the second thrust chamber leading to the radial liquid duct in the rotor to provide a second servo liquid flow loop.