Patent ID: 6306032
Filing Date: 2001-10-23
Classification: B64D,Y02T

Abstract:
In a passenger aircraft including a fuselage enclosing a fuselage interior space with a main deck floor therein, and with a passenger cabin above said main deck floor and respective first and second below-deck spaces below said main deck floor, a source of fresh external air, a source of hot pressurized air, and an air recycling system that is a source of recycled air in said aircraft,an air-conditioning system for air-conditioning said below-deck spaces in said passenger aircraft, said air-conditioning system comprising:an air mixer unit that is connected to said source of fresh external air and to said source of recycled air, and is adapted to receive and mix said fresh external air and said recycled air to prepare mixed air;a first supply air main line that is connected to and extends from said air mixer unit, and is adapted to receive a portion of said mixed air from said air mixer unit;a supply air unit that is connected and communicates from said first supply air main line to said first below-deck space;a second supply air main line that is connected to and extends from said air mixer unit, is adapted to receive a portion of said mixed air from said mixer unit, and is connected and communicates into said second below-deck space;a trimming air supply unit that is connected to said source of hot pressurized air to provide trimming air;a first trimming air line that is connected and communicates from said trimming air supply unit to said first supply air main line;a second trimming air line that is connected and communicates from said trimming air supply unit to said second supply air main line;an exhaust air main line that communicates overboard to an external environment outside of said aircraft;an exhaust air unit that is connected and communicates from said first below-deck space to said exhaust air main line; andan exhaust air supplemental line that is connected and communicates from said second below-deck space to said exhaust air main line.