Cooling structure of generator

摘要

Cooling oil passes through a cooling oil passage (28) on the inside of an iron core (7), and cools the inside of the iron core (7). Further, cooling air passes through a cooling air passage (31) in the inside of the iron core (7) and a clearance (5) between the internal periphery of the iron core (7) and the external periphery of a rotor (4), and cools the inside of the iron core (7) and the rotor (4). Therefore, it is possible to effectively cool the internal periphery side of a stator (6) and the rotor (4). When a cooling oil is sprayed from the cooling oil passage (28) into the cooling air passage (31), it is possible to obtain a more effective cooling effect by utilizing the latent heat of vaporization of the mist of the cooling oil.