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A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen

A technology for aircrew and breathing gas, which is applied to aircraft parts, respiratory protection devices, flight suits, etc., and can solve problems such as high oxygen consumption

Active Publication Date: 2009-12-30
SAFRAN AEROTECHNICS SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This approach significantly increases the demand for breathable gas, resulting in high oxygen consumption

Method used

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  • A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen
  • A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen
  • A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen

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Embodiment Construction

[0026] Figure 1 shows that the supply circuit according to the invention comprises a source 5 of breathable gas, represented in the figure by two oxygen tanks R1 and R2. Each oxygen tank has a pressure relief valve at their respective outlet for delivering the breathable gas to the passengers and crew 1 of the aircraft through a supply pipe 20 . Other sources of breathable gas may also be used in the supply circuit according to the invention.

[0027] The supply tube extends to a breathing apparatus, hereinafter described as a breathing mask 50, adapted to be worn on the face of the end user. The respiratory mask is described as, for example, but not limited to, a mask with a demand regulator 6 as described below.

[0028] An inlet 40 for ambient air is provided on the breathing mask 50 so that ambient air enters a cavity 35 . The cavity supplies a breathing gas to the mask outlet 42, which is selectively corresponding to the breathable gas and the ambient air. The breathin...

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PUM

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Abstract

The invention relates to a respiratory gas supply circuit for an aircraft carrying passengers and / or crewmembers (1) in a cabin, comprising a source of breathable gas (R1 , R2), at least one supply line (20) connected to said source, a first actuating device (60, 12) provided on said supply line to open at least partially or close the supply of breathable gas, a respiratory device (50) adapted to be worn on one passenger or crewmember's face, said respiratory device being connected to said supply line, and further comprising an ambient air inlet (40), said respiratory device providing to said one passenger or crewmember a respiratory gas to be inhaled corresponding to ambient air and / or breathable gas, wherein said ambient air inlet further comprises a second actuating device (4, 11) to open at least partially or close said ambient air inlet; and, both said first and second actuating devices are operated so that at least one of said first and second actuating devices is closed at each instant of time.

Description

technical field [0001] The present invention relates to a breathing gas supply circuit for the protection of passengers and crew members of an aircraft against the hazards of depressurization at a higher altitude and / or cabin smoke. [0002] In order to ensure the safety of said passengers and crew in the event of a depressurization accident or smoke generation on board, aviation regulations require that all flights must carry a safety oxygen supply circuit capable of providing each passenger and crew Oxygen flow as a function of cabin altitude. After the depressurization accident, the cabin altitude is close to the flight altitude. From the cabin altitude, we can know that the cabin altitude is consistent with the pressurized atmospheric pressure maintained in the cabin. In a pressurized cabin, the cabin altitude value is different from the flight altitude, which is the actual physical altitude of the aircraft. [0003] The minimum oxygen flow required for a given cabin al...

Claims

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Application Information

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IPC IPC(8): A62B7/14
CPCA62B7/14B64D10/00
Inventor 文森特·葛丽泰圣
Owner SAFRAN AEROTECHNICS SAS
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