Electric machine with a closed cooling loop

Abstract From the Canadian patent

In gas-cooled electric machines with a closed cooling loop which is distributed over two heat exchangers arranged on, the upper or under side of the machine only part of the, circulating cooling gas is cooled so that the electric machine must be taken out of operation because of the danger of local overheating. In order to overcome this baffles are arranged, adjacent to the heat exchangers so as to block the cooling gas on half the side of the opposite axial cooling gas passage regions of the heat exchangers, thus subdividing the cooling gas stream into two halves with opposite flow directions. The partial transfer of the cooling gas stream halves to the entire width of the axial cooling …