Liquid vapor purging system
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United States of America Patent
Stats
-
Apr 3, 1990
Grant Date -
N/A
app pub date -
Dec 30, 1987
filing date -
Dec 30, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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 an 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 centrifugal separator includes a centrifugal valve in communication with the vapor outlet for opening only at a predetermined rotary speed of the shaft.
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