COOLING SYSTEM FOR SUPPLYING LIQUID COOLANT TO WINDINGS OF AN ELECTRICAL MACHINE
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Abstract
A STATIONARY COOLANT TERMINAL HEAD IS PROVIDED AT THE END OF THE ROTOR SHAFT OF AN ELECTRICAL MACHINE AND COVER SUCH END AS A HOUSING. AN ANNULAR RING CHANNEL IS PROVIDED AROUND PART OF THE SHAFT HAVING AN AXIAL BORE FORMED THERETHROUGH. A COOLANT INLET CHAMBER AND A COOLANT OUTLET CHAMBER ARE PROVIDED IN THE TERMINAL HEAD ADJACENT EACH OTHER AND ARE CONNECTED TO THE AXIAL BORE OF THE SHAFT. AN INTERMEDIATE WALL PORTION SEPARATES THE COOLANT INLET AND OUTLET CHAMBERS. SHAFT PACKING AT THE INTERMEDIATE WALL PORTION SEALS AND SEPARATES THE COOLANT INLET AND OUTLET CHAMBERS FROM EACH OTHER. A FRONT FACE INLET TO THE AXIAL BORE OF THE SHAFT IS PROVIDED IN THE TERMINAL HEAD. A DEFLECTION CHANNEL IS PROVIDED IN THE TERMINAL HEAD BETWEEN THE COOLANT INLET CHAMBER AND THE FRONT FACE INLET. A PUMP IN THE TERMINAL HEAD SUPPLIED COOLANT FROM THE COOLANT INLET CHAMBER TO THE AXIAL BORE OF THE SHAFT IN A DIRECTION OPPOSITE THE PREDETERMINED DIRECTION IN WHICH COOLANT FLOWS THROUGH THE AXIAL BORE VIA THE DEFLECTION CHANNEL AND THE FRONT FACE INLET. THE PUMP IS ON THE SIDE OF THE COOLANT INLET CHAMBER OPPOSITE THAT OF THE COOLANT OUTLET CHAMBER.
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