EP0111754A1 - Appareil respiratoire pour la ventilation sur pression - Google Patents

Appareil respiratoire pour la ventilation sur pression Download PDF

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Publication number
EP0111754A1
EP0111754A1 EP83111402A EP83111402A EP0111754A1 EP 0111754 A1 EP0111754 A1 EP 0111754A1 EP 83111402 A EP83111402 A EP 83111402A EP 83111402 A EP83111402 A EP 83111402A EP 0111754 A1 EP0111754 A1 EP 0111754A1
Authority
EP
European Patent Office
Prior art keywords
breathing
mask
locking
control membrane
respirator
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
EP83111402A
Other languages
German (de)
English (en)
Other versions
EP0111754B1 (fr
Inventor
Hans-Joachim Ing.Grad. Walther
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 EP0111754A1 publication Critical patent/EP0111754A1/fr
Application granted granted Critical
Publication of EP0111754B1 publication Critical patent/EP0111754B1/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
    • 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
    • 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
    • Y10T137/7782—With manual or external control for line valve

Definitions

  • the invention relates to a breathing mask with excess pressure in the interior of the mask, in accordance with the preamble of patent claim 1.
  • a known respirator mask is equipped with a lung-controlled valve, with which excess pressure is generated and maintained in the interior of the mask.
  • the valve comprises, in a valve housing between a breathing chamber opening out in front of the user's respiratory organs and an outer chamber connected to the external atmosphere, a pressure chamber connected to both chambers via a valve.
  • a pressure chamber connected to both chambers via a valve.
  • an excess pressure is generated in the breathing chamber and thus in the mask interior both during inhalation and during exhalation.
  • a wall part of the pressure chamber is movably connected to the inner wall of the valve housing via a control membrane.
  • An inlet valve of the breathing mask for breathing gas is actuated via an actuating device via the respiratory pressure movement, the pressure chamber.
  • a switchable blocking device enables the breathing gas supply to be interrupted when the mask is removed.
  • the locking device consists of a shaft rotatably mounted in the breathing chamber. One end is guided in an airtight guide bushing through the wall of the breathing chamber to the outside and there is provided with a radial actuating lever. At this the shaft can be swiveled between two end positions. In one end position, the locked position, a resilient tongue of the actuating lever engages in a recess in the wall of the breathing chamber.
  • the shaft has a wire bracket inside. The wire bracket touches the lever arm of the inlet valve in the locked position and brings it into the closed position.
  • a leg spring pushes the wire bracket, which can be pivoted with the shaft, into the other end position, the release position, in which it rests against the inner wall of the breathing chamber and allows the lever arm to move freely.
  • the actuating lever to be operated beforehand has been locked into the locked position, thereby interrupting the breathing gas supply.
  • the first breath is automatically activated.
  • a force must be generated by the suction of the inhalation acting on the membrane on the lever arm, which is sufficient to force the locking device out of the locking position.
  • the leg spring then brings the locking device into the release position.
  • a known lung-controlled compressed air breathing apparatus with overpressure in the respiratory mask contains in its lung-controlled valve a control membrane and a metering valve that can be opened from the pre-pressure.
  • the control membrane from which the ambient air acts, limits the inside of a control room that is under the internal pressure of the respirator.
  • the control membrane is connected to the metering valve via a rocker arm and closes it against the force of the inflowing compressed air as soon as a certain overpressure in the control chamber is enough.
  • a spacer is movable longitudinally and tightly outwards from the control chamber through its wall opposite the control membrane. It ends in the control room in a stop plate which is loaded by a compression spring in the direction of the control membrane.
  • an eccentric switch lever is rotatably attached, which is supported against the wall of the control room.
  • the stop plate lies against the rocker arm.
  • the force of the compression spring then closes the metering valve even when the respirator mask is removed and there is no excess pressure in the control room.
  • the switch position with the eccentric cocked, the release position the stop plate is held at a distance from the rocker arm and the full movement of the control membrane is released.
  • the transition to the release position takes place automatically when the control membrane with the rocker arm moves the spacer bolt outwards against the spring force under the first breath.
  • the switch lever relieved in this way is oriented towards gravity in such a way that it then tilts into the release position under the weight of its grip part. Switching to the locked position must be done manually.
  • Another compressed gas breathing apparatus with an overpressure in the breathing mask is known, in which the breathing mask is connected via a lung-controlled valve via a line to the outlet of a pressure reducer and is supplied with breathing gas from there.
  • a control membrane is acted upon on its outer side by the ambient pressure and a spring.
  • the inner side is burdened by the pressure inside the mask.
  • One arm of a pivotally held rocker arm bears against this side, while the other arm is connected to the closing element of the valve, a closing piston.
  • the closing piston contains a transverse opening, with which it connects the respiratory gas line to the inside of the respirator mask or closes the line in the appropriate position.
  • This well-known compressed gas breathing apparatus with overpressure in the breathing mask is suitable for normal requirements. Too large suddenly required amounts of breathing gas and also dynamic stresses from e.g. Running and jumping cause the locking piston to make jerky movements and thus to uncontrolled breathing gas conditions in the mask interior.
  • the object of the invention is to find a lung-controlled valve for respiratory masks that are used together with compressed gas respirators and in which excess pressure must be maintained, which ensures the necessary higher breathing air requirement in the case of spontaneously changing loads on the wearer, such as suddenly occurring heavy work which prevents the outflow of breathing gas when the breathing gas storage tank valve is open when the breathing mask is not in place, but the breathing apparatus can nevertheless be ventilated immediately after the breathing mask is put on.
  • This object is achieved in a generic respiratory mask by the characterizing features of claim 1.
  • the lung-controlled valve has a valve housing 1 with a breathing gas connector 3 for the supply of
  • valve housing 1 is separated from the cover 2 by a control membrane 5, forming an outer chamber 24 above the cover 2 and a breathing chamber 6 below, the pressure of which corresponds to the internal pressure of the respirator.
  • the breathing gas nozzle 3 is separated from the breathing chamber 6 by a lung-controlled inlet valve 7, 8 for the breathing gas, consisting of valve seat 7 and valve body 8.
  • the valve body 8 is biased in the closing direction by a closing spring 9 and is in contact with the control membrane 5 via an actuating device.
  • a push rod 10 is connected to the shorter lever arm of a single-lever control lever 11.
  • the control lever 11 is mounted in the valve housing 1 and bears against the control membrane 5 with its longer lever arm.
  • the control membrane 5 has a cup-shaped holding collar 12 on the outside.
  • the longer lever of a one-armed overpressure lever 13 bears here. This is mounted in the cover 2 and is biased against the control diaphragm 5 by a semi-circular spring 14 via its shorter lever.
  • the pressure lever 13 opposite the spring 14 is held in a bearing 15 in the cover 2.
  • the overpressure lever 13 has a locking cam 16.
  • the locking slide 17 can be moved via a handle 19 which is guided through a slot 20 to the outside.
  • An escapement spring 21 ensures speedy gear.
  • the cover 2 On both sides of the locking lug 18 of the locking slide 17, the cover 2 carries a system 22 outside the retaining collar 12.
  • the inlet valve 7, 8 must remain closed.
  • the lung-controlled valve also enables a blocking position.
  • the locking slide 17 is moved by hand on its handle 19 to the right. Its pushing end 23 lifts the overpressure lever 13 against the force of the spring 14 via the locking cams 16 and relaxes the control diaphragm 5. It rises because the relief lever 13 relieves it under the action of the closing spring 9.
  • the retaining collar 12 enters the gap formed between the systems 22 of the cover 2 and the locking lug 18 of the locking slide 17.

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)
EP83111402A 1982-12-10 1983-11-15 Appareil respiratoire pour la ventilation sur pression Expired EP0111754B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3245717A DE3245717C1 (de) 1982-12-10 1982-12-10 Lungengesteuertes Ventil fuer den UEberdruckbetrieb im Maskeninnenraum
DE3245717 1982-12-10

Publications (2)

Publication Number Publication Date
EP0111754A1 true EP0111754A1 (fr) 1984-06-27
EP0111754B1 EP0111754B1 (fr) 1987-05-06

Family

ID=6180305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83111402A Expired EP0111754B1 (fr) 1982-12-10 1983-11-15 Appareil respiratoire pour la ventilation sur pression

Country Status (4)

Country Link
US (1) US4572176A (fr)
EP (1) EP0111754B1 (fr)
JP (1) JPS59115055A (fr)
DE (1) DE3245717C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371209A3 (fr) * 1988-11-28 1991-12-18 Auergesellschaft Gmbh Clapet contrôlé par action pulmonaire
EP0442273A3 (en) * 1990-02-16 1992-04-22 Space Biospheres Venture Pressure balancing a closed ecological system

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3401383A1 (de) * 1984-01-17 1985-07-25 Drägerwerk AG, 2400 Lübeck Atemschutzmaske mit ueberdruck im maskeninnenraum
US4683881A (en) * 1985-10-30 1987-08-04 U.S.D. Corp. Breathing regulator mouthpiece
DE3539668A1 (de) * 1985-11-08 1987-05-21 Draegerwerk Ag Lungengesteuertes membranventil fuer atemschutzmasken
FR2644750A1 (fr) * 1989-03-21 1990-09-28 Spirotech Ind Commerc Dispositif d'alimentation en gaz respiratoire pour plongeur
JPH06191481A (ja) * 1992-12-22 1994-07-12 Zexel Corp 半閉鎖式呼吸装置のマウスピース
GB9301959D0 (en) * 1993-02-01 1993-03-17 Sabre Safety Ltd A valve for use in breathing apparatus
GB2315116B (en) * 1993-09-22 1998-03-25 Racal Health & Safety Ltd Valves
GB9319580D0 (en) * 1993-09-22 1993-11-10 Racal Health & Safety Ltd Valves
US5551474A (en) * 1995-06-20 1996-09-03 Chuang; Rung-Chao Gas flow direct pressure regulator
GB9619459D0 (en) * 1996-09-18 1996-10-30 Jackson Peter J Breathing apparatus
FR2781381B1 (fr) * 1998-07-24 2000-09-29 Intertechnique Sa Regulateur a la demande pour systeme respiratoire
ITGE20010028A1 (it) * 2001-03-23 2002-09-23 Htm Sport Spa Erogatore per apparecchi respiratori subacquei.
DE102004052173B3 (de) * 2004-10-27 2006-01-12 Dräger Safety AG & Co. KGaA Atemschutzmaske für Normaldruck- und Überdruckbetrieb
GB0509369D0 (en) * 2005-05-07 2005-06-15 Foss Nicholas J A breathing apparatus demand valve
JP5528899B2 (ja) * 2010-04-28 2014-06-25 興研株式会社 供給弁
US9278235B1 (en) * 2012-03-12 2016-03-08 Lynn H. Phillips Adaptive demand oxygen delivery system
US11077323B2 (en) * 2015-12-30 2021-08-03 Scott Technologies, Inc. Respirator mask with air-saver switch
DE102020000335A1 (de) * 2020-01-21 2021-07-22 Drägerwerk AG & Co. KGaA Ventil-Anordnung mit Absperreinheit und Verfahren für ein Beatmungsgerät
EP4389233A1 (fr) * 2022-12-22 2024-06-26 Dräger Safety AG & Co. KGaA Régulateur de la demande pulmonaire

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1019986A (en) * 1962-12-21 1966-02-09 Robertshaw Controls Co Breathing demand regulator
EP0021803A1 (fr) * 1979-06-21 1981-01-07 Chubb Panorama Limited Soupapes et appareil respiratoire comportant de telles soupapes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US986344A (en) * 1910-07-14 1911-03-07 Reliance Engineering & Mfg Company Of Chicago Automatic gas-regulator.
US1824072A (en) * 1930-09-22 1931-09-22 Chipley D Bullard Automatic safety valve
US2406888A (en) * 1944-06-06 1946-09-03 Scott Aviation Corp Breathing apparatus
US3180356A (en) * 1963-01-07 1965-04-27 American Radiator & Standard Combination pressure regulator and shut-off valve
DE2620170A1 (de) * 1976-05-07 1977-11-17 Draegerwerk Ag Lungengesteuertes pressluftatemgeraet mit ueberdruck in der atemschutzmaske
SE428760B (sv) * 1979-10-09 1983-07-25 Aga Ab Andningsmask

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1019986A (en) * 1962-12-21 1966-02-09 Robertshaw Controls Co Breathing demand regulator
EP0021803A1 (fr) * 1979-06-21 1981-01-07 Chubb Panorama Limited Soupapes et appareil respiratoire comportant de telles soupapes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371209A3 (fr) * 1988-11-28 1991-12-18 Auergesellschaft Gmbh Clapet contrôlé par action pulmonaire
EP0442273A3 (en) * 1990-02-16 1992-04-22 Space Biospheres Venture Pressure balancing a closed ecological system
US5279081A (en) * 1990-02-16 1994-01-18 Space Biospheres Ventures Pressure balancing a closed ecological system
US5377458A (en) * 1990-02-16 1995-01-03 Decisions Team, Inc. Pressure balancing a closed ecological system

Also Published As

Publication number Publication date
JPH0150419B2 (fr) 1989-10-30
US4572176A (en) 1986-02-25
DE3245717C1 (de) 1984-06-07
EP0111754B1 (fr) 1987-05-06
JPS59115055A (ja) 1984-07-03

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