Gas-cooled dynamoelectric machine with asymmetrical flow

Claim 1

IN A GAS-COOLED DYNAMOELECTRIC MACHINE, A ROTOR HAVING FAN MEANS DISPOSED AT ONLY ONE END THEROF, A STATOR CORE DEFINING AN AIR GAP WITH THE ROTOR PERIPHERY AND ALSO DEFINING A PLURALITY OF UNIFORM AXIALLY SPACED RADIAL COOLING PASSAGES OPENING INTO SAID AIR GAP, SAID RADIAL PASSAGES COMPRISING A FIRST GROUP OF PASSAGES AT THE FAN END OF THE STATOR CORE, A SECOND GROUP OF PASSAGES AT THE FAN END THE OTHER END OF THE STATOR CORE, AND A THIRD GROUP OF PASSAGES DISPOSED BETWEEN SAID FIRST AND SECOND GROUPS, FIRST CONDUIT MEANS SUPPLYING SAID FIRST GROUP OF PASSAGES FROM THE FAN END OF THE AIR GAP, SECOND CONDUIT MEANS INCLUDING LONGITUDINAL PIPES SUPPLYING SAID SECOND GROUP OF PASSAGES FROM THE OPPOSITE END OF THE AIR GAP, AND THIRD CONDUIT MEANS SUPPLYING SAID THIRD GROUP OF PASSAGES RADIALLY FROM THE STATOR PERIPHERY, THE STATOR LENGTH ACCUPIED BY EACH OF SAID FIRST, SECOND AND THIRD GROUPS OF PASSAGES BEING SELECTED TO SUBSTANTIALLY EQUALIZE THE PRESSURE ALONG THE AXIAL LENGTH OF THE AIR GAP.