Patent ID: 6527228
Filing Date: 2003-03-04
Classification: B64D,Y02T

Abstract:
An environment control unit for an airplane wherein air of high-temperature and high-pressure is extracted from an engine or an auxiliary power portion of an airplane, the extracted air is regulated in temperature and pressure by an air conditioning portion and then the regulated air is supplied to a pressurized chamber, wherein air exhausted from the pressurized chamber or air drawn out of the pressurized chamber is separated into air enriched with nitrogen and air enriched with oxygen, the air enriched with oxygen is supplied to the pressurized chamber again and the air enriched with nitrogen is supplied to an inflammable portion further comprising:an auxiliary air conditioning portion that refrigerates air drawn from the pressurized chamber to a circulation line and supplies the air to the pressurized chamber again and the air enriched with oxygen is supplied to the pressurized chamber by making use of the circulation line of the auxiliary air conditioning portion.