Patent ID: 6681592
Filing Date: 2004-01-27
Classification: B64D,F25B,Y02T

Abstract:
An electrically driven aircraft cabin ventilation and environmental control system comprising:means for capturing ram air; means for creating a first flow of said ram air and a second flow of said ram air; electrically driven means for receiving said first flow of ram air and for creating a pressurized ram air flow; first means for cooling said pressurized ram air flow, said first cooling means receiving said second ram air flow and using said second ram air flow as a heat sink; second means for receiving said cooled pressurized ram air from said first cooling means and for cooling and removing moisture from said cooled pressurized ram air; expansion means for receiving said cooled ram air from said second means and for expanding said cooled ram air; means for delivering said cooled pressurized air from said expansion means to said cabin; said delivering means comprises a mix manifold for receiving an exit air stream from said expansion means and for delivering air to said cabin; said mix manifold receives at least one of recirculated air from said cabin, a portion of said pressurized ram air prior to said compressed air entering said first cooling means, and hot gas bypass air from an engine; a recovery heat exchanger for receiving said air exiting said, electrically driven means; means for delivering cabin exhaust air to said recovery heat exchanger to act as a heat sink; and said electrically driven means, an electric motor for driving said electrically driven means, and a power turbine mounted on a common shaft and said cabin exhaust air delivered to said recovery heat exchanger further being used to drive said power turbine.