EP0164505A2 - Soupape pour gaz respirable commandée par les poumons - Google Patents

Soupape pour gaz respirable commandée par les poumons Download PDF

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Publication number
EP0164505A2
EP0164505A2 EP85103005A EP85103005A EP0164505A2 EP 0164505 A2 EP0164505 A2 EP 0164505A2 EP 85103005 A EP85103005 A EP 85103005A EP 85103005 A EP85103005 A EP 85103005A EP 0164505 A2 EP0164505 A2 EP 0164505A2
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
breathing
regulator
piston
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.)
Granted
Application number
EP85103005A
Other languages
German (de)
English (en)
Other versions
EP0164505B1 (fr
EP0164505A3 (en
Inventor
Adalbert Dr. Dipl.-Ing. Pasternack
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.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
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 Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Publication of EP0164505A2 publication Critical patent/EP0164505A2/fr
Publication of EP0164505A3 publication Critical patent/EP0164505A3/de
Application granted granted Critical
Publication of EP0164505B1 publication Critical patent/EP0164505B1/fr
Expired 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
    • A62B9/025—Breathing demand regulators with tilting opening action
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface

Definitions

  • the invention relates to a regulator for breathing apparatus according to the preamble of claim 1.
  • the regulators for breathing apparatus should in any case secure the breathing air supply for the user of the breathing apparatus, who is then always in a dangerous, in any case exhausting environment. This must also be guaranteed if the important pressure reducer, in which the cylinder pressure is reduced, should fail.
  • a breathing apparatus which is supplied with compressed air or oxygen from a bottle.
  • the device works in two pressure stages, the last of which is the regulator, which directs the breathing gas directly to the user.
  • the first stage contains two pressure regulators connected in parallel, the operating pressure regulator and the reserve pressure regulator, in which the pressure of the breathing gas is reduced to match the regulator.
  • the pressures behind the two pressure reducers do not differ significantly.
  • the operating pressure reducer reduces the cylinder pressure to an average pressure of around 6 bar. This is fed via a medium-pressure line to a pulmonary valve connected to a mask, the pulmonary valve. A check valve in the middle pressure line allows a flow only from the operating pressure reducer to the regulator. The regulator allows the gas to flow to the user in accordance with their breaths.
  • the reserve pressure reducer is arranged parallel to the operating pressure reducer, the reserve medium pressure of which is set to approximately 9 bar.
  • the outlet of the reserve pressure reducer is connected to the medium pressure line behind the check valve via a reserve line, which contains a normally closed automatic shut-off valve.
  • the automatic shut-off valve is pneumatically operated and has a control piston with different piston surfaces.
  • a pneumatic changeover valve switched directly with the cylinder pressure switches in any case, even if the operating pressure regulator should not have a defect, when the cylinder falls below a minimum pressure the reserve line, so that there is a warning signal.
  • This residual pressure warning is not part of the present task; it is known in many variations.
  • this known safety circuit with an additional complete pressure reducer and the check valve is not only very complex, but also means considerable weight for the user, which he only has to carry around with him if a failure occurs.
  • the reserve pressure reducer which is a complicated device and is usually only in reserve when not in use, can also easily fail in an emergency.
  • the invention has for its object a lung regulator for respiratory protective devices of the type mentioned, in which there can be no risk to the user of the device even if the pressure reducer fails, in which the cylinder pressure is reduced to the mean pressure suitable for the lung regulator simple structure even safer, simpler and easier to operate and maintain.
  • toggle valve can be bypassed as normal access for the breathing gas in the medium pressure PMD to the machine housing and then the breathing gas in the high pressure p HD via a piston valve, which, connected via a control line to the P MD and from the p MD closed to the PHD , opens if the p MD fails, flows directly into the machine housing.
  • the piston valve contains in a valve housing a stepped piston with a larger area opposite the Pmu and with a smaller area opposite the P HD , which carries a valve cone on it, which forms a high-pressure valve with a seat as an opening to the inside of the machine housing.
  • a spring can be contained in the valve housing, which lifts the stepped piston in the opening direction of the high-pressure valve.
  • the advantages achieved by the invention consist in particular in that a simple, safe, clear device with only one pressure reducer, which does not require an extra check valve in the gas supply line between the already existing pressure reducer and the regulator, is presented.
  • a simple, safe, clear device with only one pressure reducer, which does not require an extra check valve in the gas supply line between the already existing pressure reducer and the regulator, is presented.
  • the simple construction ensures that the device user always has sufficient breathing air in the event of failure of the pressure reducer, which is then directly available from the high-pressure breathing gas source, e.g. flows to the compressed gas cylinder, is supplied.
  • the machine housing 1 of the regulator has the connection 2 for breathing connection for the user e.g. over a respirator. It is closed off from the outside in a known manner via a membrane 3, which is protected against external influences by a perforated cover 4.
  • the breathing gas is supplied through a connection 5, which is closed off from the inside of the machine housing 1 by a spring-loaded tilt valve 6. Its rocker arm 7 is actuated by the membrane 3.
  • a piston valve 9 is connected via a control line 8 to the connection 5 in front of the toggle valve 6 and, when open, connects a high-pressure connection 15 to the interior 10 of the machine housing 1.
  • the stepped piston 11 in a valve housing 12 lies with a larger surface area 13 via the control line 8 the medium pressure PMD applied to the pressure reducer, while its smaller surface 14 is applied to the bottle pressure PHD supplied through the high pressure connection 15.
  • the stepped piston 11 carries on the smaller surface 14 a valve cone 16, which forms a high-pressure valve 18 with a seat 17 opening to the interior 10.
  • a spring 19 lifts the stepped piston 11 into the open position of the high-pressure valve 18.
  • the medium pressure p MD of the functioning pressure reducer is present at port 5.
  • the tilt valve 6 is actuated via the membrane 3; the amount of breathing air necessary for breathing flows in and then through the nozzle 2 to the device user.
  • the medium pressure p MD at port 5 collapses. It is no longer possible to supply the device user via the normal route.
  • the emergency supply by the piston valve 9 comes into operation.
  • the high pressure valve 18 which is closed in normal operation by the medium pressure PMD over the larger surface 13 of the stepped piston 11 compared to the high pressure p HD acting on the smaller surface 14 together with the spring 19 opens.
  • the device user is now supplied with breathing gas bypassing the lung-controlled tilt valve 6 directly via the high-pressure connection 15 via the high-pressure valve 18.

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)
EP85103005A 1984-06-14 1985-03-15 Soupape pour gaz respirable commandée par les poumons Expired EP0164505B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3422023A DE3422023C2 (de) 1984-06-14 1984-06-14 Lungenautomat für Atemschutzgerät
DE3422023 1984-06-14

Publications (3)

Publication Number Publication Date
EP0164505A2 true EP0164505A2 (fr) 1985-12-18
EP0164505A3 EP0164505A3 (en) 1986-07-02
EP0164505B1 EP0164505B1 (fr) 1988-11-02

Family

ID=6238301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103005A Expired EP0164505B1 (fr) 1984-06-14 1985-03-15 Soupape pour gaz respirable commandée par les poumons

Country Status (4)

Country Link
US (1) US4630605A (fr)
EP (1) EP0164505B1 (fr)
JP (1) JPS6113978A (fr)
DE (2) DE3422023C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282213A (en) * 1993-09-22 1995-03-29 Racal Health & Safety Ltd Valves

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259375A (en) * 1992-06-19 1993-11-09 Manfred Schuler Second stage scuba regulator with balanced piston volume control
US5484270A (en) * 1994-02-28 1996-01-16 Carmeli Adahan Pump particularly useful in respirator apparatus and exhalation valve assembly therefor
JP3898251B2 (ja) * 1996-03-28 2007-03-28 スズキ株式会社 人工呼吸器のダイヤフラム中立位置制御装置
US20070017520A1 (en) * 2001-10-19 2007-01-25 Gale Peter P Oxygen delivery apparatus
US7089938B2 (en) * 2001-10-19 2006-08-15 Precision Medical, Inc. Pneumatic oxygen conserving device
CA2583587A1 (fr) * 2004-09-01 2006-03-09 Fallsafe Technology Pty Ltd Controleur de debit pour systeme ferme de circulation de fluide
US8085941B2 (en) * 2008-05-02 2011-12-27 Dolby Laboratories Licensing Corporation System and method for dynamic sound delivery
US8336547B1 (en) 2012-01-20 2012-12-25 Amron International, Inc. Breathing mask
US9993604B2 (en) 2012-04-27 2018-06-12 Covidien Lp Methods and systems for an optimized proportional assist ventilation
US10362967B2 (en) 2012-07-09 2019-07-30 Covidien Lp Systems and methods for missed breath detection and indication
US9027552B2 (en) 2012-07-31 2015-05-12 Covidien Lp Ventilator-initiated prompt or setting regarding detection of asynchrony during ventilation
US9950129B2 (en) 2014-10-27 2018-04-24 Covidien Lp Ventilation triggering using change-point detection
US11324954B2 (en) 2019-06-28 2022-05-10 Covidien Lp Achieving smooth breathing by modified bilateral phrenic nerve pacing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB512302A (en) * 1938-01-24 1939-08-31 Auergesellschaft Ag Improvements in or relating to breathing apparatus
CH212597A (de) * 1938-05-03 1940-11-30 Auergesellschaft Ag Durch eine Membran betätigtes Sauerstoffzuführungsventil an einem Sauerstoffatemschutzgerät.
FR1107497A (fr) * 1954-05-31 1956-01-03 Perfectionnements apportés aux appareils respiratoires
GB1022574A (en) * 1963-04-10 1966-03-16 Normalair Ltd Improvements in or relating to breathing apparatus employing two sources of breathable gas
US3508542A (en) * 1967-05-03 1970-04-28 Automatic Sprinkler Corp Dual source breathing fluid supply system with alarm
DE2336047C3 (de) * 1973-07-14 1979-03-01 Draegerwerk Ag, 2400 Luebeck Atemschutzmaske mit Druckluftzufuhr für die Atmung
US3957044A (en) * 1974-11-11 1976-05-18 Nasa Self-contained breathing apparatus
DE2838366C3 (de) * 1978-09-02 1986-05-28 Drägerwerk AG, 2400 Lübeck Warnsignalvorrichtung für Atemschutzgeräte mit Druckgasvorrat
DE3109660C2 (de) * 1981-03-13 1983-01-05 Drägerwerk AG, 2400 Lübeck Elektrisch und mechanisch steuerbares Atemschutzgerät nach dem Kreislaufprinzip

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282213A (en) * 1993-09-22 1995-03-29 Racal Health & Safety Ltd Valves
US5501213A (en) * 1993-09-22 1996-03-26 Racal Health & Safety Limited Gas flow control valves
AU676365B2 (en) * 1993-09-22 1997-03-06 Minnesota Mining And Manufacturing Company Valves
GB2282213B (en) * 1993-09-22 1998-01-21 Racal Health & Safety Ltd Valves
EP0885631A3 (fr) * 1993-09-22 2000-03-29 RACAL HEALTH & SAFETY LIMITED Soupape pour appareil respiratoire
EP0884069A3 (fr) * 1993-09-22 2000-03-29 RACAL HEALTH & SAFETY LIMITED Soupape pour appareil respiratoire

Also Published As

Publication number Publication date
DE3422023A1 (de) 1985-12-19
US4630605A (en) 1986-12-23
DE3565938D1 (en) 1988-12-08
EP0164505B1 (fr) 1988-11-02
EP0164505A3 (en) 1986-07-02
JPS6113978A (ja) 1986-01-22
DE3422023C2 (de) 1987-04-23

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