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System for improving air quality in an aircraft pressure cabin

A technology for pressure chambers and aircraft, applied in air handling equipment, aircraft parts, weight reduction, etc., can solve problems such as increased bleed air consumption, and achieve the effect of reducing weight, saving costs, and saving installation space

Active Publication Date: 2009-03-11
AIRBUS OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method leads to bleed air consumption, since only the part of the oxygen obtained from the (extra) bleed air is supplied to the pressure chamber by means of the oxygen enrichment device, while the remainder of this additional bleed air flows out unused increase

Method used

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  • System for improving air quality in an aircraft pressure cabin
  • System for improving air quality in an aircraft pressure cabin
  • System for improving air quality in an aircraft pressure cabin

Examples

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Embodiment Construction

[0021] Fig. 1 shows a first embodiment, which concerns an aircraft with two engines 12, 14 and an auxiliary power unit 16, it being clear that the basic operation of the system does not depend on the precise number of engines or the presence of an auxiliary power unit.

[0022] To pressurize the cabin of the aircraft (not further described), bleed air from the engine 12 and / or the engine 14 and / or the auxiliary power unit 16 is supplied via lines 18, 19 and 20, 21 to two air conditioning units 22, 24 . A connecting line 25 equipped with a shut-off valve 26 is used to simultaneously supply bleed air from the engine 12 and / or auxiliary power unit 16 to both air conditioning units 22, 24, or to supply air from the engine 14 to both Air conditioning units 22,24. With shut-off valve 26 closed, air conditioning unit 22 is supplied with bleed air from engine 12 and / or auxiliary power unit 16 only, while air conditioning unit 24 is supplied with bleed air from engine 14 only.

[002...

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PUM

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Abstract

A system for improving the air quality in a pressure cabin of an aircraft comprises a recirculation air circuit by means of which a portion of the cabin air, referred to as recirculation air, is withdrawn from the pressure cabin, filtered and then recirculated into the pressure cabin. To increase the oxygen partial pressure of the air fed back into the pressure cabin, the quantity of recirculation air is passed wholly or partially through a nitrogen generator (52) which generates nitrogen and an oxygen-containing waste gas from the recirculation air supplied. The oxygen-containing waste gas of the nitrogen generator (52), together with any remaining quantity of recirculation air untreated by the nitrogen generator (52), is recirculated into the pressure cabin. The nitrogen generator (52), to which only recirculation air is supplied, utilises a pressure gradient existing in flight between the pressure cabin and the outside of the aircraft for nitrogen generation.

Description

technical field [0001] The invention relates to a system for improving the air quality in an aircraft pressure compartment. In said system, a portion of the pressure chamber air, called recirculation air, is recovered from the pressure chamber into the recirculation air circuit, conditioned and then returned to the pressure chamber. Background technique [0002] It has long been known to pressurize aircraft cabins so that, even at relatively high flight altitudes, one can spend time in such aircraft cabins without assistance such as oxygen masks. Typically, the aircraft cabin is pressurized with so-called bleed air flowing from a compressor stage of the aircraft engine. This pressurized bleed air is depressurized in the aircraft air-conditioning system to the required cabin pressure, cooled and otherwise conditioned before being supplied to the aircraft cabin. Splitting air from the engine increases the fuel consumption of the engine, since the split air can no longer be u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D13/06
CPCY02T50/44B64D2013/0688B64D13/00B64D2013/0677B64D2013/0614Y02T50/56Y02T50/40Y02T50/50
Inventor 米夏埃尔·马克瓦特
Owner AIRBUS OPERATIONS GMBH
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