| 摘要 |
PURPOSE:To prevent oil from penetrating into a small space between a rotor and a stator, by a method wherein the upper space in an oil tank is continuously connected to an air chamber formed between a high speed generator and the air intake of a gas turbine engine. CONSTITUTION:As an air chamber 88 is continuously connected to the upper space 76 of an oil tank at the upper section of the air chamber, in other words, as they are connected together with a continous passage 91 other than an oil return pasage 85 without worrying about filling up with oil, the air chamber 88 is to be opened to atmospheric air via the continuous passage 91 and the upper space 76 of the oil tank, and the negative pressure of the air chamber 88 is eliminated. As the result, differential pressure between the air chamber 88 and a high speed generator 50 inside is eliminated, and an air stream is prevented from being generated due to the differential pressure, and oil is prevented from penetrating into a small space 69.
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