Patent ID: 6815848
Filing Date: 2004-11-09
Classification: H02K

Abstract:
An electrical machine, comprising:a) a stator; b) a rotor; c) a gap defined between the stator and the rotor; d) coolant supply duct means; e) coolant exhaust duct means; f) a plurality of substantially radially extending coolant passageways provided in a laminated core section of at least one of the stator and the rotor, the coolant passageways being defined between axially spaced stacks of laminations in the laminated core section, the coolant passageways being connected to the coolant supply duct means through the gap between the stator and the rotor; and g) a matrix of coolant duct sections extending circumferentially and axially of the laminated core section, a plurality of adjacent coolant duct sections being in fluid communication with each other in a direction transverse of a radial direction to transfer coolant in predetermined paths within the matrix, the matrix having first and second radially spaced apart faces, the first face being in fluid communication with the radially extending coolant passageways in the laminated core section, the second face being in fluid communication with the coolant exhaust duct means, selected coolant duct sections communicating directly with the coolant exhaust duct means through the second face of the matrix.