Patent ID: 6459178
Filing Date: 2002-10-01
Classification: H02K

Abstract:
A forced-convection heat exchanger being provided for a rotary electrical machine and having a rotor with a plurality of electrical conductors wrapped around a stator core, said heat exchanger comprising:one or more tubing elements into which a cooling fluid flows, said tubing elements being inserted internally to the stator core and being arranged among the conductors so as to contact outer surfaces of the conductors; wherein the tubing elements are coupled to and wound around the stator core together with the conductors that constitute stator windings; wherein the tubing elements are operatively connected to a collector configured to collect the cooling fluid flowing from the tubing elements; wherein the collector includes a first element and a second element that are respectively connected to a first end and a second end of the tubing elements; and wherein the first element and the second element are made of electrically nonconductive material.