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Method for determining partial pressure of a gaseous constituent and regulator of breathing mask for aircraft occupant

A gas composition, breathing mask technology, applied in the direction of respirators, breathing masks, respiratory protection containers, etc., can solve problems such as interference

Active Publication Date: 2013-01-02
SAFRAN AEROTECHNICS SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when two gases with different mixtures flow sequentially in opposite directions in the chamber, the measurement of the gas composition properties in the flow of the first gas mixture is disturbed by the second gas mixture

Method used

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  • Method for determining partial pressure of a gaseous constituent and regulator of breathing mask for aircraft occupant
  • Method for determining partial pressure of a gaseous constituent and regulator of breathing mask for aircraft occupant
  • Method for determining partial pressure of a gaseous constituent and regulator of breathing mask for aircraft occupant

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Embodiment Construction

[0051] figure 1 The main functions of a breathing mask 4 for an aircraft occupant, in particular a pilot in a cabin 10 of an aircraft, are disclosed.

[0052] The respiratory mask 4 comprises a flow regulator 1 and an oronasal mask piece 3 secured to a tubular connection portion 5 of the regulator 1 . When the user 7 puts on the breathing mask 4 , the oronasal mask piece 3 is placed on the skin of the user's face 7 and delimits the breathing chamber 9 .

[0053] The flow regulator 1 has a housing 2 comprising a breathable gas supply line 12 , a dilution gas supply line 14 and a breathing gas supply line 16 . The breathing gas supply line 16 has a downstream end in fluid communication with the breathing chamber 9 .

[0054] A breathable gas supply line 12 provides compressed oxygen from a breathable gas source 8 at its upstream end through a feed conduit 6 . In the illustrated embodiment, the compressed source of breathable gas 8 is a tank containing compressed oxygen. Brea...

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Abstract

A method for determining a characteristic such as partial pressure or percentage of a gaseous constituent in a first gas mixture flow (32) in a flow chamber (30) where flows alternatively said first gas mixture flow (32) and a second gas mixture flow (34) comprising the following steps: a) introducing the first gas mixture flow (32) into a sensing chamber (40) when the first gas mixture flow (32) flows in the flow chamber (30), b) preventing introduction of gas from the flow chamber (30) into the sensing chamber (40) at least when the second gas mixture flow (34) flows in the flow chamber (30), c) sensing said characteristic of the first gas mixture flow (32) in the sensing chamber (40).

Description

technical field [0001] The present invention relates to methods for determining gas composition properties, such as partial pressures or percentages, and regulators for breathing masks for aircraft occupants. A gas component is in particular oxygen or carbon dioxide. Background technique [0002] The partial pressure or percentage of oxygen (and carbon dioxide) is particularly useful in order to meet the needs of the user while reducing the amount of pure oxygen (provided by oxygen cylinders, chemical generators or liquid oxygen converters) or especially by the on-board oxygen generator Consumption of oxygen-enriched gas supplied by the system (OBOGS). [0003] However, when two gases with different mixtures flow successively in opposite directions in the chamber, the measurement of the gas composition properties in the flow of the first gas mixture is disturbed by the second gas mixture. The present invention aims to reduce this problem. Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62B7/14A62B9/00A62B9/02B64D10/00
CPCA62B18/02A62B7/14A62B7/02A62B9/006B64D2231/025B64D10/00A62B9/027A61M16/0051A61M16/026A62B9/00A62B18/00
Inventor 马西厄·弗罗马盖
Owner SAFRAN AEROTECHNICS SAS