WO2008010015A1 - A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen - Google Patents
A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen Download PDFInfo
- Publication number
- WO2008010015A1 WO2008010015A1 PCT/IB2006/003369 IB2006003369W WO2008010015A1 WO 2008010015 A1 WO2008010015 A1 WO 2008010015A1 IB 2006003369 W IB2006003369 W IB 2006003369W WO 2008010015 A1 WO2008010015 A1 WO 2008010015A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- breathable gas
- respiratory
- previous
- oxygen
- supply
- Prior art date
Links
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/02—Respiratory apparatus with compressed oxygen or air
- A62B7/04—Respiratory apparatus with compressed oxygen or air and lung-controlled oxygen or air valves
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/02—Valves
- A62B9/022—Breathing demand regulators
Definitions
- the present invention relates to a respiratory gas supply circuit for protecting the passengers and crewmembers of an aircraft against the risks associated with depressurization at high altitude and/or the occurrence of smoke in the cockpit.
- a source of breathable gas e.g. oxygen
- a supply line connected to the source of breathable gas
- a mixing device provided on the supply line comprising an ambient air inlet for mixing the ambient air with the breathable gas to provide to passengers and/or crewmembers a respiratory gas corresponding to a mixture of breathable gas and ambient air.
- the breathable gas consumption can match the actual need of an end user. No excessive volume of oxygen is fed, which reduces the need in onboard oxygen sources.
- This improved regulation allows a control of the supply in breathable gas based on the actual breathable gas content supplied to the end user.
- FIG.2 illustrates an exemplary embodiment of an oxygen emergency system of a plane adapted to deliver a respiratory gas in a first embodiment of the invention.
- a regulating device 24 is further provided to control the supply in breathable gas to the mask 9.
- the regulating device 24 is driven by a control signal F
- the regulating device may be for example an electro-valve.
- an electronic unit 62, or CPU is provided to elaborate the control signal sent to regulating device 24, as seen in doted lines in FIG. 1.
- the electronic unit 62 defines a set point F
- a first sensor 140 i.e. a pressure sensor, is provided in the cabin of the aircraft to supply a first pressure signal to the CPU 62 for elaborating the set point F
- Another type of sensor, measuring the cabin altitude may also be used.
- Pressure sensor 140 measures the cabin pressure (measured in hPa for example), data which is equivalent to the cabin altitude (generally measured in feet) as defined before.
- the set point Fi ⁇ 2 SP is elaborated by the electronic unit 62 based on the regulatory curves defined by the Federal Aviation Regulation (FAR). Such curves define the required oxygen content of the respiratory gas fed to the passengers and crewmembers as a function of the cabin altitude.
- FAR Federal Aviation Regulation
- a PID module may be comprised within electronic unit 62 to elaborate the control signal F
- Second sensor 150 is an oxygen sensor probe adapted to measure the breathable gas content in the respiratory gas provided downstream the mixing device. Sensor 150 may be for example a galvanic oxygen sensor or an oxygen cell. As an average inspiratory phase lasts about 1 second, it is preferable that the response signal from the sensor is not significantly delayed. Therefore, in a preferred embodiment, a fast sensor is used, with response time of 5Hz, or more, and preferably 10Hz or higher. Thus the response signal is delayed by no more than 100ms.
- the regulating device 24 drives the breathable gas supply to one mask 9.
- the man skilled in the art will easily transpose the teachings of the present invention to a regulation device regulating the supply in breathable gas to a cluster of masks 9 thanks to a control signal corresponding to the average F 1 O 2 measured through each sensor 150 provided in each mask 9.
- FIG.2 illustrates an exemplary embodiment of the system according to the invention, and more specifically a demand regulator comprising a regulating device, as known from WO2006/005372.
- the portion 10 carried by the mask is constituted by a housing comprising a plurality of assembled together parts having recesses and passages formed therein for defining a plurality of flow paths.
- a spring 38 holds the piston 32 on seat 39 but allows the piston 32 to separate from the seat 39, when the mask wearer inhales a respiratory gas intake, so that air passes through the air flow path to the mixing device, here mixing chamber 35, where air is mixed with the incoming oxygen from the first flow path.
- piston 32 presses against the seat 39, and thereby prevents air from passing through.
- Piston 32 can also be used as the moving member of a servo-controlled regulator valve. In general, regulators are designed to make it possible not only to perform normal operation with dilution, but also emergency positions thanks to selector 58.
- a pressure sensor 49 is provided in the mask to detect the breath- in/breath-out cycles.
- sensor 49 is provided upstream mixing chamber 35.
- Pressure sensor 49 is connected to the electronic circuit card 62.
- Portion 10 housing also defines a breathe-out path including a exhalation or breathe-out valve 40.
- the shutter element of the valve 40 shown is of a type that is in widespread use at present for performing the two functions of acting both as a valve for piloting admission and as an exhaust valve. In the embodiment shown, it acts solely as a breathe-out valve while making it possible for the inside of the mask to be maintained at a pressure that is higher than the pressure of the surrounding atmosphere by increasing the pressure that exists in a chamber 42 defined by the valve 40 to a pressure higher than ambient pressure.
- an electrically-controlled valve 48 (specifically a solenoid valve) connects the chamber 42 to the atmosphere, in which case breathing occurs as soon as the pressure in the mask exceeds ambient pressure.
- the valve 48 connects the chamber 42 to the oxygen feed via a flowrate-limiting constriction 50.
- the pressure inside the chamber 42 takes up a value which is determined by relief valve 46 having a rate closure spring.
- Portion 10 housing may further carry means enabling a pneumatic harness of the mask to be inflated and deflated. These means are of conventional structure and consequently they are not shown nor described.
- Electronic unit 62 operates as a function of the selected operating mode taking into account the signal FiO 2 M representative of the breathable gas content in the respiratory gas, and provided by sensor 150 located downstream mixing chamber 35. Electronic unit 62 further takes into account the cabin altitude (as indicated by a sensor 140, in the example of FIG. 2 provided within the storage box 12) and the breathing cycle (as indicated by sensor 49), as no oxygen is needed when the end user breathes out.
- the electronic circuit card 62 provides appropriate electrical signals, i.e. the control signal, to the first electrically-controlled valve 24 as follows.
- pressure sensor 49 indicates when the end user is breathing in (see continuous line in FIG.2).
- the electronic circuit 62 receives this signal together with the cabin altitude information from sensor 140.
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800557396A CN101505835B (en) | 2006-07-12 | 2006-07-12 | A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen |
PCT/IB2006/003369 WO2008010015A1 (en) | 2006-07-12 | 2006-07-12 | A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen |
CA002657466A CA2657466A1 (en) | 2006-07-12 | 2006-07-12 | A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen |
BRPI0621941-1A BRPI0621941B1 (en) | 2006-07-12 | 2006-07-12 | RESPIRABLE GAS SUPPLY CIRCUIT TO SUPPRESS OXYGEN TO CREW MEMBERS AND PASSENGERS OF AN AIRCRAFT |
EP06831596.9A EP2038014B1 (en) | 2006-07-12 | 2006-07-12 | A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen |
JP2009518982A JP2009542393A (en) | 2006-07-12 | 2006-07-12 | Breathing gas supply circuit for supplying oxygen to aircraft crew and passengers |
US12/373,346 US20090277449A1 (en) | 2006-07-12 | 2006-07-12 | Respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2006/003369 WO2008010015A1 (en) | 2006-07-12 | 2006-07-12 | A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008010015A1 true WO2008010015A1 (en) | 2008-01-24 |
Family
ID=37964941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2006/003369 WO2008010015A1 (en) | 2006-07-12 | 2006-07-12 | A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090277449A1 (en) |
EP (1) | EP2038014B1 (en) |
JP (1) | JP2009542393A (en) |
CN (1) | CN101505835B (en) |
BR (1) | BRPI0621941B1 (en) |
CA (1) | CA2657466A1 (en) |
WO (1) | WO2008010015A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2283900A1 (en) * | 2009-08-13 | 2011-02-16 | B/E Aerospace Systems GmbH | Emergency oxygen supply device |
US9022033B2 (en) | 2009-09-16 | 2015-05-05 | Airbus Engineering Centre India | Adaptable oxygen regulator system and method with an electronic control device |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103415325B (en) * | 2011-02-21 | 2016-11-16 | 佐迪埃克航空技术公司 | Aircraft flow regulator and dilution control method |
EP2680926A1 (en) | 2011-02-28 | 2014-01-08 | Intertechnique | Method for protecting aircraft occupant and breathing mask |
US9038628B2 (en) * | 2011-11-30 | 2015-05-26 | Avox Systems Inc. | System and method for an oxygen system alarm |
CN106039607B (en) * | 2016-07-30 | 2022-03-25 | 四川海特亚美航空技术有限公司 | Digital respiration following oxygen supply system and oxygen supply method thereof |
US11338158B2 (en) | 2018-03-15 | 2022-05-24 | Safran Aerotechnics Sas | System and a method for delivering breathing gas to passengers on-board an aircraft |
CN108888881A (en) * | 2018-05-07 | 2018-11-27 | 合肥江航飞机装备有限公司 | A kind of civil aircraft emergency oxygen supply control method |
US20220160991A1 (en) * | 2020-11-23 | 2022-05-26 | 8B Medical Llc | System and method for data collection, research, and proactive medical treatment |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3675649A (en) * | 1970-08-21 | 1972-07-11 | Westland Aircraft Ltd | Electronically controlled oxygen regulators |
JPH04138174A (en) * | 1990-09-28 | 1992-05-12 | Shimadzu Corp | Respiratory device |
WO2006005372A1 (en) * | 2004-07-15 | 2006-01-19 | Intertechnique | Demand and dilution mask regulator and method of regulating additional oxygen in the mask regulator |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4052970A (en) * | 1976-02-24 | 1977-10-11 | Stromberg-Carlson Corporation | Air-fuel ratio control system utilizing oxygen sensor and pressure differential sensor |
GB9224797D0 (en) * | 1992-11-26 | 1993-01-13 | Normalair Garrett Ltd | Air-oxygen mixture controllers for breathing demand regulators |
US5915834A (en) * | 1997-06-09 | 1999-06-29 | Litton Systems, Inc. | Variable set point oxygen concentration mixer |
JP4138174B2 (en) * | 1999-08-31 | 2008-08-20 | 本田技研工業株式会社 | Rear swing arm support structure for motorcycles |
US6629933B1 (en) * | 2000-04-25 | 2003-10-07 | Envitec Wismar Gmbh | Method and device for determining per breath the partial pressure of a gas component in the air exhaled by a patient |
JP2004298554A (en) * | 2003-04-01 | 2004-10-28 | Teijin Ltd | Respiratory gas supplying device |
-
2006
- 2006-07-12 CA CA002657466A patent/CA2657466A1/en not_active Abandoned
- 2006-07-12 WO PCT/IB2006/003369 patent/WO2008010015A1/en active Application Filing
- 2006-07-12 JP JP2009518982A patent/JP2009542393A/en active Pending
- 2006-07-12 US US12/373,346 patent/US20090277449A1/en not_active Abandoned
- 2006-07-12 CN CN2006800557396A patent/CN101505835B/en active Active
- 2006-07-12 BR BRPI0621941-1A patent/BRPI0621941B1/en active IP Right Grant
- 2006-07-12 EP EP06831596.9A patent/EP2038014B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3675649A (en) * | 1970-08-21 | 1972-07-11 | Westland Aircraft Ltd | Electronically controlled oxygen regulators |
JPH04138174A (en) * | 1990-09-28 | 1992-05-12 | Shimadzu Corp | Respiratory device |
WO2006005372A1 (en) * | 2004-07-15 | 2006-01-19 | Intertechnique | Demand and dilution mask regulator and method of regulating additional oxygen in the mask regulator |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2283900A1 (en) * | 2009-08-13 | 2011-02-16 | B/E Aerospace Systems GmbH | Emergency oxygen supply device |
US9022033B2 (en) | 2009-09-16 | 2015-05-05 | Airbus Engineering Centre India | Adaptable oxygen regulator system and method with an electronic control device |
Also Published As
Publication number | Publication date |
---|---|
CA2657466A1 (en) | 2008-01-24 |
BRPI0621941A2 (en) | 2011-12-20 |
EP2038014A1 (en) | 2009-03-25 |
EP2038014B1 (en) | 2017-01-04 |
CN101505835A (en) | 2009-08-12 |
US20090277449A1 (en) | 2009-11-12 |
JP2009542393A (en) | 2009-12-03 |
BRPI0621941B1 (en) | 2017-08-01 |
CN101505835B (en) | 2012-07-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2038015B1 (en) | A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen | |
EP2038014B1 (en) | A respiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen | |
US6789539B2 (en) | Dilution regulation method and device for breathing apparatus | |
US20130247913A1 (en) | Respiratory gas supply circuit for an aircraft carrying passengers | |
CA2648974C (en) | System to deliver oxygen in an aircraft | |
US8225791B2 (en) | Arespiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen | |
CA2542989C (en) | Demand and dilution mask regulator and method of regulating additional oxygen in the mask regulator | |
EP2678081B1 (en) | Aircraft demand regulator and dilution regulation method | |
WO2012116764A1 (en) | Method for protecting aircraft occupant and breathing mask | |
BRPI0621940B1 (en) | RESPIRABLE GAS SUPPLY CIRCUIT TO SUPPRESS OXYGEN TO CREW MEMBERS AND PASSENGERS OF AN AIRCRAFT |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200680055739.6 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 06831596 Country of ref document: EP Kind code of ref document: A1 |
|
REEP | Request for entry into the european phase |
Ref document number: 2006831596 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006831596 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2657466 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 227/DELNP/2009 Country of ref document: IN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009518982 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: RU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12373346 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: PI0621941 Country of ref document: BR Kind code of ref document: A2 Effective date: 20090112 |