FIELD: mechanical engineering. SUBSTANCE: atmospheric air at an ambient condition is used as a cooling gas. The air can be sucked from the space or environment of the main housing. The air is cleaned in coarse and fine filters. The air is sucked and flows over the open loop. To provide this, the air is injected owing to the high speed drop of the coolant from rotating rotor into drain chambers 7. EFFECT: enhanced reliability and stability. 1 dwg
