Patent ID: 6577027
Filing Date: 2003-06-10
Classification: H01F

Abstract:
An inductive winding structure having a relatively uniform cooling fluid flow comprising:an inner insulating tube; an outer insulating tube coaxial with the inner insulating tube; a plurality of disc windings arranged along an axial direction of and between the inner and outer insulating tubes, wherein the disc windings have cooling passages transverse to the axial direction, between each adjacent pair of the disc windings, the disc windings define an inner cooling passage along the axial direction between an inner peripheral side surface of the disc windings and the inner insulating tube, and the disc windings define an outer cooling passage between an outer peripheral side surface of the disc windings and the outer insulating tube; alternatingly arranged inner and outer blocking plates respectively extending from the inner and outer insulating tubes, transverse to the axial direction, between respective disc windings and at least partially blocking flow of a cooling fluid in the inner and outer cooling passages, respectively, each pair of inner and outer blocking plates closest to each other defining between them a cooling block including a plurality of the disc windings, a cooling fluid flowing between the inner and outer insulating tubes, into one end of and out of another end of the inner and outer insulating tubes; and an outer flow passage adjusting guide plate located in the outer cooling passage opposite and transverse to one of the inner blocking plates, extending, in a circumferential direction of the inner and outer insulating tubes, along at least part of a plurality of the disc windings, and extending in the axial direction along only parts of the pair of adjacent cooling blocks separated by the inner blocking plate, and having respective ends generally transverse to the axial direction.