Patent ID: 8033321

Claim:
A heat exchanger system comprising a rotating machine element situated in a housing; at least one pipe ( 1 ) and at least one lamina ( 2 ) for exchanging heat between a first coolant that flows through the pipe ( 1 ) at least one and a second coolant that wets the heat exchanger under the influence of centrifugal forces in order to be cooled and to be available to further cool the rotating machine element ( 3 ), wherein the heat exchanger is of ring-shaped and, essentially surrounds the rotating machine element ( 3 ) and is furthermore integrated into the housing ( 4 ); and, wherein the at least one pipe ( 1 ) is a flat pipe having a width side facing inward towards the rotating machine element that is curved on a length side of said at least one pipe ( 10 ), the lamina ( 2 ) being attached to the width side facing inward towards the rotating machine element, and the width side of the at least one pipe ( 10 ) situated substantially parallel to the axis of rotation (R) of the rotating machine element.