FR2852919A1 - SYSTEM FOR PROVIDING OXYGEN TO OCCUPANTS OF AN AIRCRAFT AND METHOD OF IMPLEMENTING SUCH A SYSTEM - Google Patents

SYSTEM FOR PROVIDING OXYGEN TO OCCUPANTS OF AN AIRCRAFT AND METHOD OF IMPLEMENTING SUCH A SYSTEM Download PDF

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FR2852919A1
FR2852919A1 FR0303715A FR0303715A FR2852919A1 FR 2852919 A1 FR2852919 A1 FR 2852919A1 FR 0303715 A FR0303715 A FR 0303715A FR 0303715 A FR0303715 A FR 0303715A FR 2852919 A1 FR2852919 A1 FR 2852919A1
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pressure
aircraft
oxygen
outlet
occupants
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FR2852919B1 (en
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Stephane Lessi
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Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Priority to FR0303715A priority Critical patent/FR2852919B1/en
Priority to JP2006505859A priority patent/JP2006524527A/en
Priority to PCT/FR2004/050119 priority patent/WO2004087568A1/en
Publication of FR2852919A1 publication Critical patent/FR2852919A1/en
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Publication of FR2852919B1 publication Critical patent/FR2852919B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0446—Means for feeding or distributing gases
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/14—Respiratory apparatus for high-altitude aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02—Preparation of oxygen
    • C01B13/0229—Purification or separation processes
    • C01B13/0248—Physical processing only
    • C01B13/0259—Physical processing only by adsorption on solids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02—Preparation of oxygen
    • C01B13/0229—Purification or separation processes
    • C01B13/0248—Physical processing only
    • C01B13/0259—Physical processing only by adsorption on solids
    • C01B13/0262—Physical processing only by adsorption on solids characterised by the adsorbent
    • C01B13/027—Zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/12—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/102—Nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40003—Methods relating to valve switching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/406—Further details for adsorption processes and devices using more than four beds
    • B01D2259/4062—Further details for adsorption processes and devices using more than four beds using six beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4533—Gas separation or purification devices adapted for specific applications for medical purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
    • B01D2259/4575—Gas separation or purification devices adapted for specific applications for use in transportation means in aeroplanes or space ships
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/047—Pressure swing adsorption
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0046—Nitrogen

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)

Abstract

Le système de fourniture d'oxygène à des occupants (6 ;7) d'un aéronef comprend un dispositif PSA (1) ayant une entrée recevant l'air comprimé provenant des moteurs (5), la ligne de distribution d'oxygène (3) comprenant un régulateur de pression (14), avantageusement du type à vannes trois voies motorisée, permettant de réguler la pression de sortie dans la ligne de distribution (3) indépendamment des variations de pression dans la ligne de fourniture (2).Application notamment aux aéronefs civils gros porteurs.The system for delivering oxygen to occupants (6; 7) of an aircraft comprises a PSA device (1) having an inlet receiving compressed air from the engines (5), the oxygen distribution line (3 ) comprising a pressure regulator (14), advantageously of the motorized three-way valve type, making it possible to regulate the outlet pressure in the distribution line (3) independently of the pressure variations in the supply line (2). large-bodied civil aircraft.

Description

La présente invention concerne les systèmes de fourniture d'oxygène à desThe present invention relates to systems for supplying oxygen to

5 occupants d'un aéronef, du type comprenant un dispositif PSA de séparation d'air par  5 occupants of an aircraft, of the type comprising a PSA device for air separation by

adsorption à variation de pression ayant une entrée reliée à une ligne de fourniture d'air comprimé et une sortie reliée à une ligne de distribution de mélange gazeux riche en oxygène.  pressure variation adsorption having an inlet connected to a compressed air supply line and an outlet connected to a distribution line of oxygen-rich gas mixture.

Les systèmes de ce type, généralement désignés par l'acronyme anglo-saxon 10 OBOGS, sont utilisés depuis plusieurs décennies dans les avions militaires et commencent à trouver une place dans les avions civils gros porteurs pour l'alimentation en oxygène non seulement de l'équipage mais aussi des passagers.  Systems of this type, generally designated by the acronym 10 OBOGS, have been used for several decades in military aircraft and are beginning to find a place in large civil aircraft for the supply of oxygen not only to the crew but also passengers.

Dans ces avions civils, la pression de l'air d'alimentation en entrée du dispositif PSA peut varier dans un rapport allant jusqu'à 2. Pour tenir compte de ces conditions, il a 15 été proposé d'aménager dans la ligne de fourniture d'air comprimé d'un organe limiteur de pression afin d'écrêter la pression d'entrée à une pression minimale de fonctionnement déterminée. Cette approche présente l'inconvénient de ne stabiliser la pression qu'en amont du dispositif alors que le principe de fonctionnement des dispositifs PSA cause intrinsèquement des variations de pression en sortie même avec une pression 20 d'entrée stable, cette pression variable de sortie provoquant des variations de débit de sortie et donc des variations d'enrichissement en teneur en oxygène délivré aux occupants.  In these civil aircraft, the pressure of the supply air at the inlet of the PSA device can vary in a ratio of up to 2. To take account of these conditions, it has been proposed to fit into the supply line compressed air from a pressure limiting device in order to limit the inlet pressure to a determined minimum operating pressure. This approach has the drawback of only stabilizing the pressure upstream of the device, while the operating principle of PSA devices intrinsically causes variations in outlet pressure even with a stable inlet pressure, this variable outlet pressure causing variations in outlet flow and therefore variations in enrichment in oxygen content delivered to the occupants.

La présente invention a pour objet de proposer un système amélioré permettant, dans un agencement simple, fiable et de faibles coûts, de garantir une pression et un débit 25 constants aux utilisateurs, même dans le cas de fortes variations de la pression de l'air d'alimentation.  The object of the present invention is to provide an improved system which, in a simple, reliable and low-cost arrangement, guarantees constant pressure and flow to the users, even in the case of large variations in air pressure. power.

Pour ce faire, selon une caractéristique de l'invention, la ligne de distribution comporte un régulateur de pression permettant de réguler la pression de sortie indépendamment des variations de la pression d'air d'entrée.  To do this, according to a characteristic of the invention, the distribution line includes a pressure regulator making it possible to regulate the outlet pressure independently of variations in the inlet air pressure.

3 0 Selon des caractéristiques plus particulières de l'invention: Le régulateur est une vanne trois voies motorisée qui comporte avantageusement une position o elle forme vanne d'isolement.  According to more specific features of the invention: The regulator is a motorized three-way valve which advantageously has a position where it forms an isolation valve.

La présente invention a également pour objet un procédé de mise en oeuvre d'un tel système, dans lequel la pression de sortie est régulée à une valeur déterminée Ps pour une pression d'entrée Pe variant entre 1,1 et 1, 7 P, D'autres caractéristiques et avantages de la présente invention ressortiront de la description suivante de modes de réalisation, donnée à titre illustratif mais nullement limitatif, faite en relation avec les dessins annexés, sur lesquels: - la figure I est une vue schématique d'un système de fourniture d'oxygène à des occupants d'un aéronef selon l'invention; et - la figure 2 est une vue schématique en coupe d'un régulateur à vanne motorisée 10 utilisé dans le système de la figure 1.  The present invention also relates to a method of implementing such a system, in which the outlet pressure is regulated to a determined value Ps for an inlet pressure Pe varying between 1.1 and 1.7 P, Other characteristics and advantages of the present invention will emerge from the following description of embodiments, given by way of illustration but in no way limiting, made in relation to the appended drawings, in which: - Figure I is a schematic view of a system for supplying oxygen to occupants of an aircraft according to the invention; and - Figure 2 is a schematic sectional view of a motorized valve regulator 10 used in the system of Figure 1.

Sur la figure 1, on reconnaît les principaux circuits de gaz associés à un système de fourniture d'oxygène à des occupants d'un aéronef, comprenant un dispositif PSA 1 de séparation de gaz de l'air comportant au moins deux paires d'adsorbeurs contenant au moins un adsorbant pour séparer l'oxygène des constituants de l'air ambiant.  In FIG. 1, the main gas circuits associated with an oxygen supply system to the occupants of an aircraft are recognized, comprising a PSA 1 device for separating gas from the air comprising at least two pairs of adsorbers containing at least one adsorbent to separate oxygen from the constituents of ambient air.

Le dispositif PSA 1 est alimenté en air comprimé par une ligne de fourniture d'air 2 et fournit un mélange fortement enrichi en oxygène dans une ligne de distribution 3, le mélange gazeux appauvri en oxygène étant évacué vers l'extérieur ou exploité pour l'inertage de réservoirs par une ligne d'évacuation 4.  The PSA device 1 is supplied with compressed air by an air supply line 2 and supplies a mixture highly enriched in oxygen in a distribution line 3, the gaseous mixture depleted in oxygen being evacuated to the outside or used for inerting of tanks by an evacuation line 4.

De façon classique, la ligne de fourniture 2 est alimentée en air comprimé en 20 provenance de sorties 5 d'étages de compresseurs de turbomachines de l'aéronef et la ligne de distribution 3 achemine l'oxygène produit vers des masques d'équipage 6 et des masques de passagers 7. Des bouteilles de réserves d'oxygène gazeux 8 peuvent, sous contrôle d'un dispositif régulateur/détendeur 9, compléter ou suppléer l'alimentation en oxygène des masques 6 et 7. Côté amont, la ligne de fourniture d'air comprimé 2 traverse 25 tout d'abord un échangeur de chaleur 10 o circule un fluide de refroidissement 11, typiquement de l'air froid ambiant, puis, via des vannes d'isolement 12, un séparateur d'eau et de vapeur 13.  Conventionally, the supply line 2 is supplied with compressed air from outputs 5 of the compressor stages of turbomachines of the aircraft and the distribution line 3 routes the oxygen produced to crew masks 6 and passenger masks 7. Bottles of gaseous oxygen reserves 8 can, under the control of a regulator / regulator 9, supplement or supplement the oxygen supply to the masks 6 and 7. On the upstream side, the supply line d compressed air 2 passes first through a heat exchanger 10 o circulates a cooling fluid 11, typically cold ambient air, then, via isolation valves 12, a water and steam separator 13 .

Selon un aspect de l'invention, dans la ligne de distribution 3, est interposé, en sortie du dispositif PSA 1, un dispositif régulateur de pression 14, permettant de réguler 3 0 la pression de sortie à une valeur donnée, typiquement légèrement inférieure à la pression minimum normalement disponible dans la ligne de fourniture d'air 2. Ce régulateur de pression 14 est relié, de même que les vannes d'isolement 12 et le dispositif régulateur 9, à une unité de contrôle électronique 15 recevant des signaux 16 représentatifs de conditions de vol de l'aéronef, de signaux de capteurs de pression 17 et 18 dans les lignes de fourniture 2 et de distribution 3, respectivement, d'au moins un capteur de température 19 dans la ligne de fourniture et d'un détecteur de teneur en oxygène 20 dans la ligne de fourniture 3.  According to one aspect of the invention, in the distribution line 3, there is interposed, at the outlet of the PSA device 1, a pressure regulating device 14, making it possible to regulate the outlet pressure to a given value, typically slightly less than the minimum pressure normally available in the air supply line 2. This pressure regulator 14 is connected, like the isolation valves 12 and the regulating device 9, to an electronic control unit 15 receiving signals 16 representative flight conditions of the aircraft, signals from pressure sensors 17 and 18 in supply lines 2 and distribution lines 3, respectively, of at least one temperature sensor 19 in the supply line and of a detector of oxygen content 20 in supply line 3.

On a représenté sur la figure 2 un mode de réalisation du dispositif régulateur de pression 14 articulé autour d'une vanne motorisée telle que celle décrite dans le document EP-A-0 499 505 (Zapata/Arnaud), au nom de la demanderesse.  FIG. 2 shows an embodiment of the pressure regulating device 14 articulated around a motorized valve such as that described in document EP-A-0 499 505 (Zapata / Arnaud), in the name of the applicant.

Cette vanne comprend essentiellement un tiroir 21 dont la position est déterminée par un moteur électrique 22 pour positionner l'extrémité intérieure du tiroir 21 munie de 10 découpes progressives 23 par rapport à un passage de sortie 24 et moduler ainsi un débit de fuite 25 permettant de réguler le débit et la pression dans le passage de sortie 26 relié aux masques 6 et 7. Le moteur 22 est commandé par une électronique 27 recevant des signaux 28 représentatifs de la pression amont réelle dans le régulateur 14 et des signaux 29 images d'une pression d'affichage correspondant à des conditions de vol de l'aéronef 15 Avantageusement, comme représenté sur la figure 2, le tiroir 21 comporte en outre une tête d'extrémité 30 venant, en position extrême de course, libérant complètement l'orifice de sortie de fuite 24, occulter un siège de clapet 31 interposé dans la ligne 3 de distribution et assurant ainsi une fonction d'isolement de celle-ci Avec la vanne motorisée 14 il est ainsi possible d'adresser aisément à cette 2 0 dernière une consigne de régulation de pression de sortie dépendant de divers paramètres de vol, tels que l'altitude de rétablissement de l'avion, le nombre de passagers de l'aéronef etc...  This valve essentially comprises a drawer 21, the position of which is determined by an electric motor 22 for positioning the inner end of the drawer 21 provided with 10 progressive cutouts 23 relative to an outlet passage 24 and thus modulating a leakage rate 25 making it possible to regulate the flow rate and pressure in the outlet passage 26 connected to the masks 6 and 7. The motor 22 is controlled by electronics 27 receiving signals 28 representative of the actual upstream pressure in the regulator 14 and signals 29 images of a display pressure corresponding to flight conditions of the aircraft 15 Advantageously, as shown in FIG. 2, the slide 21 further comprises an end head 30 coming, in the extreme stroke position, completely freeing the orifice of leakage outlet 24, conceal a valve seat 31 interposed in the distribution line 3 and thus ensuring an isolation function thereof With the motoris valve ée 14 it is thus possible to easily address to the latter an output pressure regulation instruction depending on various flight parameters, such as the aircraft recovery altitude, the number of passengers on the aircraft etc ...

Le système qui vient d'être décrit permet non seulement de réguler efficacement la pression de sortie adressée aux usagers mais aussi de supprimer tout réducteur de 25 pression dans la ligne de fourniture 2 et donc de permettre au dispositif PSA 1 de fonctionner dans des conditions améliorées par rapport aux conditions de calcul correspondant à la pression minimale en entrée du système PSA.  The system which has just been described makes it possible not only to effectively regulate the outlet pressure addressed to users but also to eliminate any pressure reducing valve in the supply line 2 and therefore to allow the PSA device 1 to operate under improved conditions with respect to the calculation conditions corresponding to the minimum inlet pressure of the PSA system.

Ainsi, la quantité d'adsorbant, dans le dispositif PSA 1 avantageusement une zéolite de type LiLsX telle que décrite dans la demande FR 02/05579 est dimensionnée 30 pour la pression d'alimentation minimum, typiquement 2,5 bars relatifs et peut être optimisée pour ce seuil de pression pour fournir un mélange à teneur en oxygène sensiblement constante supérieur à 80%, pouvant dépasser 90%.  Thus, the quantity of adsorbent in the PSA device 1 advantageously a zeolite of LiLsX type as described in application FR 02/05579 is dimensioned for the minimum supply pressure, typically 2.5 bars relative and can be optimized. for this pressure threshold to provide a mixture with a substantially constant oxygen content greater than 80%, which can exceed 90%.

Lorsque la pression d'alimentation augmente, pour atteindre le cas échéant une valeur d'environ 3,8 bars relatifs, la performance du dispositif PSA en terme de teneur en oxygène produit sera améliorée alors qu'avec un réducteur de pression écrêtant la pression d'entrée le dispositif PSA ne fonctionne au mieux que dans les conditions de calcul de base.  When the supply pressure increases, to reach a value of approximately 3.8 bar if necessary, the performance of the PSA device in terms of oxygen content produced will be improved whereas with a pressure reducer clipping the pressure d he input the PSA device works best only under basic calculation conditions.

Quoique l'invention ait été décrite avec des modes de réalisation particuliers, elle ne s'en trouve pas limitée mais est susceptible de modifications et de variantes qui apparaîtront à l'homme du métier dans le cadre des revendications ci-après.  Although the invention has been described with particular embodiments, it is not limited thereto but is susceptible to modifications and variants which will appear to a person skilled in the art within the scope of the claims below.

S 6157 - 07/03S 6157 - 07/03

Claims (6)

REVENDICATIONS 1. Système de fourniture d'oxygène à des occupants d'un aéronef, comprenant un dispositif PSA de séparation d'air (1) ayant une entrée reliée à une ligne de fourniture d'air comprimé (2) et une sortie reliée à une ligne de distribution de mélange gazeux riche en oxygène (3), caractérisé en ce que la ligne de distribution (3) comporte un régulateur de pression (14) permettant de réguler la pression de sortie indépendamment des variations de la pression d'entrée et des fluctuations de pression du 10 dispositif PSA.  1. System for supplying oxygen to occupants of an aircraft, comprising a PSA air separation device (1) having an inlet connected to a compressed air supply line (2) and an outlet connected to a oxygen-rich gas mixture distribution line (3), characterized in that the distribution line (3) comprises a pressure regulator (14) making it possible to regulate the outlet pressure independently of variations in the inlet pressure and the pressure fluctuations of the PSA device. 2. Système selon la revendication 1, caractérisé en ce que le régulateur de pression est une vanne trois voies motorisée (14).  2. System according to claim 1, characterized in that the pressure regulator is a motorized three-way valve (14). 3. Système selon la revendication 2, caractérisé en ce que la vanne motorisée (14) comporte une position o elle forme vanne d'isolement de la ligne de fourniture (3). 15  3. System according to claim 2, characterized in that the motorized valve (14) has a position where it forms an isolation valve for the supply line (3). 15 4. Système selon la revendication 2 ou la revendication 3, caractérisé en ce que la vanne motorisée est couplée à une électronique de commande (27) de façon à recevoir des signaux de commande dépendant de conditions de vol de l'aéronef4. System according to claim 2 or claim 3, characterized in that the motorized valve is coupled to a control electronics (27) so as to receive control signals depending on flight conditions of the aircraft 5. Système selon l'une des revendications précédentes, caractérisé en ce que le dispositif PSA (1) contient au moins une paire d'adsorbeurs contenant au moins une 2 0 zéolithe LiLSX.5. System according to one of the preceding claims, characterized in that the PSA device (1) contains at least one pair of adsorbers containing at least one LiLSX zeolite. 6. Procédé de mise en oeuvre d'un système selon l'une des revendications précédentes, caractérisé en ce que la pression de sortie est régulée à une valeur P, déterminée pour une pression d'entrée Pe variant entre environ 1,1 et 1,7 P,  6. Method of implementing a system according to one of the preceding claims, characterized in that the outlet pressure is regulated to a value P, determined for an inlet pressure Pe varying between approximately 1.1 and 1 , 7 P,
FR0303715A 2003-03-26 2003-03-26 SYSTEM FOR SUPPLYING OXYGEN TO OCCUPANTS OF AN AIRCRAFT AND METHOD OF IMPLEMENTING SUCH A SYSTEM Expired - Lifetime FR2852919B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR0303715A FR2852919B1 (en) 2003-03-26 2003-03-26 SYSTEM FOR SUPPLYING OXYGEN TO OCCUPANTS OF AN AIRCRAFT AND METHOD OF IMPLEMENTING SUCH A SYSTEM
JP2006505859A JP2006524527A (en) 2003-03-26 2004-03-22 System for supplying oxygen to an aircraft occupant and method for using such a system
PCT/FR2004/050119 WO2004087568A1 (en) 2003-03-26 2004-03-22 System for supplying oxygen to occupants of an aircraft and method for using such a system

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DE102004026647B4 (en) * 2004-06-01 2009-01-15 Dae Systems Gmbh Device for air separation

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EP0499505A1 (en) * 1991-02-14 1992-08-19 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Pneumatic control valve
EP0667183A1 (en) * 1994-02-14 1995-08-16 The Boc Group, Inc. Zeolites and their use in separation of gaseous mixtures
US5460175A (en) * 1992-11-26 1995-10-24 Normalair-Garrett (Holdings) Limited Air-oxygen mixture controllers for breathing demand regulators
US5713984A (en) * 1995-05-18 1998-02-03 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for producing pressurized oxygen by adsorption
WO2002012796A2 (en) * 2000-08-04 2002-02-14 Davies, Paul, R. Method and apparatus for improving the air quality within a building or enclosed space
US20020144679A1 (en) * 2001-04-04 2002-10-10 Jean-Michel Cazenave Process and installation for the distribution of air enriched in oxygen to passengers of an aircraft

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EP0499505A1 (en) * 1991-02-14 1992-08-19 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Pneumatic control valve
US5460175A (en) * 1992-11-26 1995-10-24 Normalair-Garrett (Holdings) Limited Air-oxygen mixture controllers for breathing demand regulators
EP0667183A1 (en) * 1994-02-14 1995-08-16 The Boc Group, Inc. Zeolites and their use in separation of gaseous mixtures
US5713984A (en) * 1995-05-18 1998-02-03 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for producing pressurized oxygen by adsorption
WO2002012796A2 (en) * 2000-08-04 2002-02-14 Davies, Paul, R. Method and apparatus for improving the air quality within a building or enclosed space
US20020144679A1 (en) * 2001-04-04 2002-10-10 Jean-Michel Cazenave Process and installation for the distribution of air enriched in oxygen to passengers of an aircraft

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JP2006524527A (en) 2006-11-02
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