Patent ID: 8261575
Filing Date: 2012-09-11
Classification: F02M,H02K,Y02T

Abstract:
1. An internally cooled motor comprising: a frame, a shaft assembly comprising a shaft having an open end and a sealed end, wherein said open end comprises an inlet and an outlet interconnected in a fluid communicating relation by a channel extending therebetween, said frame comprising bearings disposed at opposite ends, said shaft supported in said frame in a rotational configuration via said bearings, an armature assembly mounted to said shaft and structured to rotate therewith, said armature assembly comprising at least one pole extending outwardly and substantially perpendicular to said shaft, said at least one pole having a proximal end disposed adjacent said shaft and a distal end disposed outwardly from said shaft, a winding assembly comprising at least one winding affixed to said armature assembly, wherein said at least one winding is disposed in an overlying relation to said at least one pole, said winding comprising an inlet aperture and an outlet aperture, said winding further comprising a fluid passage extending lengthwise therethrough between said inlet aperture and said outlet aperture to facilitate passage of a fluid heat transfer media through said winding, an inlet fluid transfer slip ring assembly interconnected to said open end of said shaft and disposed in a fluid transferring configuration with said inlet of said shaft, said outlet of said shaft interconnected to said inlet aperture of said winding and disposed in a fluid transferring relation therewith, an outlet fluid transfer slip ring assembly interconnected to said outlet aperture of said winding and disposed in a fluid transferring orientation therewith, wherein said outlet aperture of said winding is disposed proximate said distal end of said at least one pole extending outwardly from said shaft, said winding comprising a helix configuration between said inlet aperture and said outlet aperture, said helix configuration structured such that rotation of said shaft at a predetermined speed creates a centrifugal force sufficient to maintain a predetermined flowrate of said fluid heat transfer media through said fluid passage of said winding, wherein a flow of said fluid heat transfer media through said winding is in a direction from said inlet aperture to said outlet aperture along a radial flow path, and wherein said predetermined flowrate of said fluid heat transfer media through said fluid passage of said winding results in a transfer of a predetermined amount of heat from said winding to said fluid heat transfer media, thereby maintaining an operating temperature of said internally cooled motor assembly within a predetermined operating range.