| 摘要 |
412,948. Cooling electrical machines. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Allgemeine Elektricitõts-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Jan. 4, 1934, No. 364. Convention date, Jan. 4, 1933. [Class 35.] Electrical machines having separate fans for internal and external ventilation are provided with a single fan motor independent of the machine to be cooled. A motor 2 drives an internal air circulating fan 3 and an external ventilating fan 4 which are arranged at opposite ends of the motor. The internal air current moves in a closed circuit through a pipe 7 whilst the external fan forces fresh air guided by a hood 9 over the ribbed machine casing.
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