| 摘要 |
A self-contained liquid vapor purging system for use in such electromotive apparatus as integrated drive generators, or the like, which include a casing and a rotatable shaft extending into the casing. A charge pump circuit communicates with the casing for circulating liquid from the casing and charging liquid back to the casing. An aspirator is located in the charge pump circuit between a charge pump and a inlet to the casing for mixing fresh air with the liquid to deliver an air-liquid mixture to the casing. A centrifugal separator and check valve are incorporated in the rotatable shaft for separating liquid and vapor. The separator includes a vapor-liquid inlet from the casing, a liquid outlet to the casing, and a vapor outlet draining outside the casing. The centifrugal separator includes a valve in communication with the vapor outlet. One form of valve opens only at a predetermined rotary speed of the shaft, and another form of valve opens at a predetermined absolute pressure value.
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