| 摘要 |
PURPOSE:To cool the whole coils uniformly, by a method wherein the coils arranged confronting a magnet and provided for a stator core are cooled to be sprayed with oil through the oil passage of an oil service unit. CONSTITUTION:Oil reserved in an oil reservoir 24 is held up by the rotational force of a rotor 4 and is splashed to the upper section on the right side through the lower section on the left side of charging coils 14, 15 and a lighting coil 13, and the splashed sections are cooled. In the meantime, oil is pressure- conveyed by an oil pump 23 through an oil reservoir 25 to the oil passage 20 of an oil service unit 18. The oil fed to the oil service unit 18 is sprayed to the lighting coil 13 to be cooled through each blast nozzle 20a via the oil passage 20 formed in a ring shape 18a. In this manner, the whole coils can be uniformly cooled and cannot be partially kept at a high temperature. |
