EP1100590B1 - Bedarfsabhängiger regler für ein atmungssystem - Google Patents

Bedarfsabhängiger regler für ein atmungssystem Download PDF

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Publication number
EP1100590B1
EP1100590B1 EP99932948A EP99932948A EP1100590B1 EP 1100590 B1 EP1100590 B1 EP 1100590B1 EP 99932948 A EP99932948 A EP 99932948A EP 99932948 A EP99932948 A EP 99932948A EP 1100590 B1 EP1100590 B1 EP 1100590B1
Authority
EP
European Patent Office
Prior art keywords
mask
regulator
tubing
valve
overpressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99932948A
Other languages
English (en)
French (fr)
Other versions
EP1100590A1 (de
Inventor
Patrice Martinez
Michel Bardel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Aerosystems SAS
Original Assignee
Intertechnique SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intertechnique SA filed Critical Intertechnique SA
Publication of EP1100590A1 publication Critical patent/EP1100590A1/de
Application granted granted Critical
Publication of EP1100590B1 publication Critical patent/EP1100590B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A62B9/027—Breathing demand regulators pilot operated, i.e. controlled by valve means sensitive to a reduced downstream pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S137/00—Fluid handling
    • Y10S137/908—Respirator control

Definitions

  • Respiratory protection systems for aircrew capable of flying at high altitude include a regulator for supplying a respirator from a source of pressurized respiratory gas (usually oxygen) .
  • the regulator can be worn by the mask or mounted on the seat of the crew member.
  • Such regulators comprise two selection members available to the user: - a normal switching button - 100% allowing the choice to supply the mask with respiratory gas diluted with air or with pure gas; - An "emergency” button whose control, from a rest position, causes the supply of the mask overpressure.
  • the inventors have found that it is sufficient to have the states 1 and 4, the latter to replace the state 2 without inconvenience, especially since the state 2 is little used.
  • the document US 4,336,590 describes a regulator whose operation is controlled by a computer.
  • the document US 4,928,682 discloses a regulator according to the preamble of the independent claims 1 and 2, the manually operated selection member also allows to select a third position, which corresponds to the state 2 defined above, little used and that the invention proposes to replace by state 4 as previously indicated.
  • the object of the invention is therefore to provide a simple demand regulator, which nevertheless makes it possible to meet all needs.
  • the invention proposes in particular a demand regulator of the type known by US Patent 4928682 and which is characterized by the characterizing part of claim 1.
  • the invention also proposes a set of a demand regulator of the type also known by US Patent 4928682 and a storage box, and which is characterized by the characterizing portion of claim 2.
  • arrangement according to claim 1 may further comprise the technical measures according to claims 4 and 5.
  • the safety is improved, the crew member having a supply of pure respiratory gas and with overpressure as soon as he puts the mask on his face.
  • the same result can be obtained, when the regulator on demand is mounted on the mask, by providing the storage box of the latter with means that bring the selection member in the normal position when storing the device. mask in the storage box and which bring it to the rescue position when the mask is extracted from this box, according to the second provision of the invention.
  • This second arrangement preferably additionally has the technical measures of claim 6.
  • said means for prohibiting can be arranged to include, in addition, the technical measures of claim 7.
  • the demand regulator whose general constitution is shown in figure 1 comprises a housing 10 in several assembled parts, having an inlet 12 intended to be connected to a source of pressurized respiratory gas, constituted for example by a pressurized oxygen cylinder or a liquid oxygen converter.
  • the casing also comprises a tubing 14 for connection with the inside of a respiratory mask (not shown) which bears the regulator.
  • the housing 10 contains a main valve 16 constituted by a membrane cooperating with a fixed seat.
  • a control chamber 18 limited by the rear of the main membrane and the housing is connected by a throat 20 to the inlet.
  • the membrane 16 When it is subjected to the inlet pressure, the membrane 16 is applied against the seat, closes the passage in this seat and separates the inlet 12 from the tubing 14.
  • the pressure in the chamber 18 is controlled by a pilot valve 22.
  • This pilot valve comprises a membrane 24 sensitive to pressure.
  • the membrane carries a shutter 26 which cooperates with a fixed seat to put in communication the control chamber 18 with a chamber 28 delimited by the membrane 24 or to separate the chambers.
  • Chamber 28 also communicates with the inlet by a constriction 29.
  • the pressure in the chamber 28 is limited by a vent valve 30 which prevents overpressure in the chamber 28 from exceeding a predetermined value.
  • an ejector 32 is interposed between the main valve 16 and the pipe 14.
  • a passage 34 allows, when it is open, the dilution air inlet downstream of the ejector.
  • the pilot valve 22 is constructed to also form an exhaust valve.
  • the membrane 24 has an annular flange 36 which is supported on an exhaust seat to the atmosphere.
  • the regulator of the figure 1 comprises a selection member 38 shown in solid lines in the "emergency” position and in dashes in the "normal” position.
  • This selection member is guided on the housing 10 by means not shown.
  • resilient retaining means such as a ball repelled by a spring, hold it in the position where it was manually brought.
  • the selection member 38 controls a dilution valve 40 which closes the passage 34 when the member 38 is in the "emergency” position and opens it when the member is in "normal” position.
  • the selection member 38 also controls a valve 42 which opens a vent passage of the chamber 28 in the "normal” position and closes this passage in the "emergency" position.
  • the regulator shown in figure 1 comprises a valve 44 connecting the chamber 28 with the atmosphere, pushed by a spring 46 to an open position.
  • the valve 44 is provided with a pusher 48 which protrudes out of the casing 10 at rest.
  • This pusher is intended to be depressed and to close the valve 44 when the mask which is equipped with the regulator is placed on the face.
  • the pusher may be provided to apply against the face. It can also be placed to be depressed when a harness that slams the mask against the face is put in tension.
  • the spring 46 may be calibrated so that a simple contact between the pusher 48 and the face is sufficient to close the valve, or so that the valve 44 closes only when a sufficient force of application is exerted .
  • the inlet pressure tends to be established through the throat 29. But the pressure in the chamber 28 is limited by the opening of the valve 30 of venting, while the pressure reached in the chamber 28 is sufficient to cause the opening of the pilot valve 22.
  • the pressure in the control chamber 18 decreases to a value set by the calibration of the valve 30.
  • the main valve 16 subject to the difference between the inlet pressure and the pressure in the chamber 18 opens and feeds the tubing 14 in pure respiratory gas. the main valve 16 only closes when the pilot valve 22 closes itself under the effect of the increased pressure inside the mask.
  • annular flange 36 Upon expiration, the annular flange 36 rises from its seat and allows escape to the atmosphere.
  • the regulator does not discharge to the atmosphere, even when the selection member 38 is in the "emergency" position, as long as the valve 44 remains open, so as long as the mask is not in place.
  • the box 52 for receiving the mask is designed to bring and / or hold the selection member 38 in the "normal” position as long as the mask is stored and to cause the passage to the "emergency" position when the mask is removed. .
  • the box has an elastic lock 54 and the selection member 38 has a stud 56.
  • the lock begins by pushing back to the left the body 38 to bring it to the "normal” position, then clicks beyond the nipple.
  • the elastic latch 54 returns the member 38 to the "emergency" position before being erased.
  • the embodiment of the figure 3 can be considered to have a pusher functioning the opposite of that of the figure 1 .
  • the valve 44a is pushed by a spring 46a to its closed position.
  • the pusher 48a is intended to be depressed and to open the valve 44a when the mask provided with its regulator is placed in the box 52a.
  • the embodiment shown in figure 4 is especially usable when the regulator is mounted on the mask and storable in a box. Operation in overpressure, while the selection member 38 is in "emergency" position intervenes in response to the first inspiration causing a decrease in the pressure in the tubing 14 below the ambient pressure. The binding constriction 29 of the figure 1 is omitted.
  • the main valve 16 When the inlet 12 is energized and the selection member 38 is in the "emergency" position when the ambient pressure is insufficient to open the valve 30, the main valve 16 remains closed. Indeed the chamber 28 is separated from the inlet by the pilot valve 26, held closed by the spring 50. The intake pressure prevails in the chamber 18.
  • the first inspiration of the wearer of the mask creates a depression in the tube 14.
  • the intake pressure tends to be established in the chamber 28 and keeps the pilot valve open permanently.
  • the pressure is, however, limited by the permanently open pilot valve.
  • the pressure is, however, limited by the vent valve 30 to a sufficiently low value that the main valve remains open and sufficiently high to that the pilot valve also remains open.
  • an ambient depressurization causes the valve 30 to open and the pressure in the chamber 18 to be reduced to a level such that the main valve is continuously discharging.
  • the means for prohibiting operation with the pressurized gas mask feeding as long as the mask is in a storage position can have very diverse constitutions.
  • the means can be sensitive to a first inspiration creating a depression in the mask after it has been put on the face. Means may also prohibit the storage of a mask with a regulator in a box while it is in "emergency" position. When the regulator is separated from the mask, a connection can be provided between the mask and the regulator to transmit to the regulator a reliable information.
  • the operating prohibition can be caused by cutting off the supply upstream of the regulator, cutting the flow rate through the regulator or shutting down the overpressure, the different solutions being able to be combined.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Claims (7)

  1. Einrichtung zur bedarfsgemäßen Regulierung, umfassend:
    - Mittel, um einen Einlass (12) für Atemgas unter Druck mit einem Rohr (14) zu verbinden, das dazu bestimmt ist, mit dem Inneren einer Atemmaske verbunden zu sein,
    - Mittel (34, 32) zur Zufuhr von Luft zur Verdünnung für das Atemgas,
    - ein Ausatmungventil (36), dass sich von dem Rohr (14) zur Atmosphäre hin öffnet, und
    - ein manuell gesteuertes/geregeltes Auswahlelement (38), das eine Normalposition aufweist, die den Betrieb ohne Überdruck und mit Verdünnung hervorruft, und eine Notposition, die die Versorgung des Rohrs (14) mit reinem Atemgas und unter Überdruck hervorruft,
    dadurch gekennzeichnet, dass sie weiterhin umfasst:
    - Mittel zum Verhindern des Betriebs mit der Versorgung des Rohrs (14) mit Gas unter Überdruck so lange, wie die Maske aufbewahrt wird, wobei die Mittel zum Verhindern wenigstens ein Ventil (44, 44a) umfassen, das empfindlich ist für das Platzieren oder den Anwendungsdruck der Maske auf dem Gesicht oder der Einrichtung zur Regulierung auf einem Aufbewahrungsbehälter (52a) für die Maske, wenn die Einrichtung zur Regulierung an einer Maske angebracht ist.
  2. Gesamtheit aus einer Einrichtung zur bedarfsgemäßen Regulierung und einem Aufbewahrungsbehälter (52), wobei die Einrichtung zur Regulierung umfasst:
    - Mittel, um einen Einlass (12) für Atemgas unter Druck mit einem Rohr (14) zu verbinden, das dazu bestimmt ist, mit dem Inneren einer Atemmaske verbunden zu sein,
    - Mittel (34, 32) zur Zufuhr von Luft zur Verdünnung für das Atemgas,
    - ein Ausatmungsventil (36), das sich von dem Rohr (14) zur Atmosphäre hin öffnet, und
    - ein manuell gesteuertes/geregeltes Auswahlelement (38), das eine Normalposition aufweist, die den Betrieb ohne Überdruck und mit Verdünnung hervorruft, und eine Notposition, die die Versorgung des Rohrs (14) mit reinem Atemgas und unter Überdruck hervorruft, dadurch gekennzeichnet, dass sie weiterhin umfasst:
    - Mittel zum Verhindern des Betriebs mit der Versorgung des Rohrs (14) mit Gas unter Überdruck so lange, wie die Maske aufbewahrt wird, wobei die Mittel zum Verhindern von einem Aufbewahrungsbehälter (52) für eine Maske gehalten werden, die die Einrichtung zum Regulieren hält, und dazu vorgesehen sind, um das Auswahlelement (38) in die Normalposition zu bringen oder/und in der Normalposition zu halten, solange die Maske aufbewahrt wird, und um den Übergang zu der Notposition hervorzurufen, wenn die Maske herausgezogen wird.
  3. Gesamtheit oder Einrichtung zur Regulierung nach einem der Ansprüche 1 und 2,
    dadurch gekennzeichnet, dass die Mittel zur Herstellung einer Verbindung ein Hauptventil (16) umfassen, das eine Steuerkammer (18) begrenzt, die durch eine Verengung (20) mit dem Einlass (12) verbunden ist und die Verbindung zwischen dem Einlass (12) und dem Rohr (14) regelt/steuert, und ein Pilotventil (22) umfassen, das empfindlich ist für den Einatmungs-Unterdruck in dem Rohr (14) und das mit einem festen Sitz zusammenwirkt, um die Steuerkammer (18) mit einer Kammer (28) in Verbindung zu setzen, die mit dem Einlass (12) über eine Verengung (29) in Verbindung steht.
  4. Gesamtheit oder Einrichtung zur Regulierung nach Anspruch 3,
    dadurch gekennzeichnet, dass das Ventil (44) zwischen die Kammer (28) und die Umgebungsatmosphäre positioniert ist und gegen eine Rückstellfeder (46) durch das Eindrücken eines Drückers (48) bei dem Platzieren der Maske und der Einrichtung zur Regulierung auf dem Gesicht eines Verwenders in eine Schließposition gedrängt wird.
  5. Gesamtheit oder Einrichtung zur Regulierung nach Anspruch 3,
    dadurch gekennzeichnet, dass das Ventil (44a) zwischen der Kammer (28) und der Umgebungsatmosphäre positioniert ist und gegen eine Rückstellfeder (46a) durch das Eindrücken eines Drückers (48a) beim Platzieren der Maske und der Einrichtung zur Regulierung in einen Aufbewahrungsbehälter (52a) in eine Öffnungsposition gedrängt wird.
  6. Gesamtheit nach Anspruch 2,
    dadurch gekennzeichnet, dass die Mittel zum Verhindern des Betriebs einen elastischen Riegel (54) des Aufbewahrungsbehälters (52) für die Maske umfassen, wobei das Auswahlelement (38) einen Zapfen (56) umfasst, der dazu geeignet ist, mit dem elastischen Riegel (54) des Aufbewahrungsbehälters (52) derart zusammen zu wirken, dass, wenn die Maske in den Behälter (52) hinein gedrückt wird, der Riegel (54) das Auswahlelement (38) in die Normalposition bringt und dann jenseits des Zapfens (56) einrastet, während, wenn die Maske aus dem Behälter (52) herausgezogen wird, der elastische Riegel (54) das Auswahlelement (38) zurück in die Notposition bringt, bevor er zur Seite tritt.
  7. Gesamtheit oder Einrichtung zur Regulierung nach einem der Ansprüche 1 und 2,
    dadurch gekennzeichnet, dass die Mittel zum Verhindern weiterhin aufgebaut sind, um den Betrieb unter Überdruck hervorzurufen, während sich das Auswahlelement (38) in der Notposition befindet, in Reaktion auf ein erstes Einatmen, das eine Verringerung des Drucks in dem Rohr unterhalb des Umgebungsdrucks hervorruft.
EP99932948A 1998-07-24 1999-07-22 Bedarfsabhängiger regler für ein atmungssystem Expired - Lifetime EP1100590B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9809493 1998-07-24
FR9809493A FR2781381B1 (fr) 1998-07-24 1998-07-24 Regulateur a la demande pour systeme respiratoire
PCT/FR1999/001803 WO2000004956A1 (fr) 1998-07-24 1999-07-22 Regulateur a la demande pour systeme respiratoire

Publications (2)

Publication Number Publication Date
EP1100590A1 EP1100590A1 (de) 2001-05-23
EP1100590B1 true EP1100590B1 (de) 2010-09-15

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EP99932948A Expired - Lifetime EP1100590B1 (de) 1998-07-24 1999-07-22 Bedarfsabhängiger regler für ein atmungssystem

Country Status (8)

Country Link
US (1) US6994086B1 (de)
EP (1) EP1100590B1 (de)
JP (1) JP2002521101A (de)
AU (1) AU749421B2 (de)
CA (1) CA2338178C (de)
DE (1) DE69942768D1 (de)
FR (1) FR2781381B1 (de)
WO (1) WO2000004956A1 (de)

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US8225791B2 (en) 2006-12-05 2012-07-24 Intertechnique Arespiratory gas supply circuit to feed crew members and passengers of an aircraft with oxygen
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US9016278B2 (en) * 2011-07-25 2015-04-28 Zodiac Aerotechnics Regulation valve for a life support system
CN104090593B (zh) * 2014-06-30 2017-01-25 深圳市科曼医疗设备有限公司 气体浓度控制装置
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Also Published As

Publication number Publication date
CA2338178C (fr) 2006-02-21
FR2781381B1 (fr) 2000-09-29
WO2000004956A1 (fr) 2000-02-03
US6994086B1 (en) 2006-02-07
DE69942768D1 (de) 2010-10-28
JP2002521101A (ja) 2002-07-16
CA2338178A1 (fr) 2000-02-03
AU749421B2 (en) 2002-06-27
FR2781381A1 (fr) 2000-01-28
EP1100590A1 (de) 2001-05-23
AU4915399A (en) 2000-02-14

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