EP0152528A1 - Atemschutzmaske mit Überdruck im Maskeninnenraum - Google Patents

Atemschutzmaske mit Überdruck im Maskeninnenraum Download PDF

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Publication number
EP0152528A1
EP0152528A1 EP84111750A EP84111750A EP0152528A1 EP 0152528 A1 EP0152528 A1 EP 0152528A1 EP 84111750 A EP84111750 A EP 84111750A EP 84111750 A EP84111750 A EP 84111750A EP 0152528 A1 EP0152528 A1 EP 0152528A1
Authority
EP
European Patent Office
Prior art keywords
mask
breathing
control membrane
respirator
inlet valve
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.)
Withdrawn
Application number
EP84111750A
Other languages
German (de)
English (en)
French (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 EP0152528A1 publication Critical patent/EP0152528A1/de
Withdrawn legal-status Critical Current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
    • Y10T137/7782—With manual or external control for line valve

Definitions

  • the invention relates to a breathing mask with excess pressure in the mask interior according to the preamble of claim 1.
  • 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. With this pressure chamber, 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 of 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 fits the inner wall of the Breathing chamber rests and allows free movement of the lever arm.
  • the actuating lever to be actuated has been locked into the locked position, thereby interrupting the breathing gas supply.
  • the first breath is activated automatically.
  • a force must be generated by the suction of inhalation acting on the diaphragm 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.
  • German patent application P 32 45 717 a further breathing mask with excess pressure in the interior of the mask, which is also generated and maintained by a lung-controlled valve.
  • the housing of the lung-controlled valve with a breathing gas connector for the supply and an outlet connector for the breathing mask for the breathing gas is closed with a housing cover.
  • the housing is separated by a control membrane, forming an outer chamber towards the housing cover and a breathing chamber below.
  • the breathing chamber is connected to the inside of the breathing mask via the outlet connection.
  • the breathing gas nozzle is switchable with the breathing chamber through an inlet valve which is in contact with the control membrane via a lever device.
  • the outer chamber contains a control device with which, triggered manually by a locking slide to be moved laterally, the control membrane is held in a locked position by means of a holding collar while the inlet valve is closed and the pressure is released.
  • a control device with which, triggered manually by a locking slide to be moved laterally, the control membrane is held in a locked position by means of a holding collar while the inlet valve is closed and the pressure is released.
  • the pressure in the breathing mask and breathing chamber decreases.
  • an overpressure lever moves the inlet valve into an open position under the force of a spring via the control membrane and the lever device.
  • the locking slide which has been moved into the locked position, lifts the overpressure lever against the spring against the control diaphragm, which then loses pressure under the action of the closing spring of the valve that closes up. Your retaining collar is pinched after you release the locking slide.
  • the inlet valve remains closed until the next deep breath after the respirator is put on.
  • the object of the invention is to improve a respirator mask with excess pressure in the mask interior of the type mentioned so that with the elimination of mechanical components from the lung-controlled valve, wear and thus possible jamming of a lever mechanism can no longer be a cause of error.
  • the advantages achieved by the invention are, in particular, that instead of a plurality of components which have to move with one another, practically only the magnetic push button in relation to a steel plate in the control membrane in any case brings about the inlet valve shut-off.
  • the magnetic forces can be safely controlled, wear is excluded.
  • the lung-controlled valve upstream of the breathing mask has a valve housing 1 with a breathing gas connector 3 for the supply and an outlet connector 4 for the breathing mask and is closed with a housing cover 2.
  • the valve housing 1 is separated from the housing cover 2 by a control membrane 5, forming an outer chamber 6 above the housing cover 2 and a respiratory chamber 7 below, the pressure of which corresponds to the internal pressure of the respirator.
  • the breathing gas nozzle 3 is separated from the breathing chamber 7 by a lung-controlled inlet valve 8 for the breathing gas containing the valve body 9.
  • the valve body 9 is movably connected to the control membrane 5 via a coupling device 10.
  • the housing cover 2 contains, in the outer chamber 6 it forms, guided in spacers 11, an overpressure spring 12 which, with the pressure against the control membrane 5, determines the overpressure in the breathing chamber 7 and thus the interior of the mask. Axially supported in a guide 13, the housing cover 2 contains a magnetic switch 14, which is held by a return spring 15 on the outside in the operating position with the stop of its magnet 16.
  • the control membrane 5, surrounded by the material, has a steel plate 17 opposite the magnet 16.
  • the lung-controlled valve works in a known manner during normal breathing operation with a respirator mask on.
  • inhalation i.e. a negative pressure in the mask interior and thus also in the breathing chamber 7, the control membrane 5 opens the inlet valve 8 via the coupling device 10.
  • the overpressure spring 12 controls the overpressure in the interior of the mask during further breathing.
  • the inlet valve 8 When the respirator mask is removed, the inlet valve 8 must be securely closed in order to prevent an unnecessary outflow of breathing gas, even if there is no excess pressure in the breathing chamber 7.
  • the magnetic button 14 is pressed against the return spring 15 in the housing cover 2.
  • the magnetic force of the magnet 16 attracts the steel plate 17 and thus the control membrane 5 and holds it against the pressure spring 12 in the position shown in FIG. 2.
  • the inlet valve 8 is closed.
  • the spacers 11 limit the path of the control membrane 5 when the inlet valve 8 is closed and ver thus prevent it from coming into the area of the magnetic force of the magnet 16 unintentionally against the force of the pressure spring 12 in the operating position.

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)
EP84111750A 1984-01-17 1984-10-02 Atemschutzmaske mit Überdruck im Maskeninnenraum Withdrawn EP0152528A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3401383 1984-01-17
DE19843401383 DE3401383A1 (de) 1984-01-17 1984-01-17 Atemschutzmaske mit ueberdruck im maskeninnenraum

Publications (1)

Publication Number Publication Date
EP0152528A1 true EP0152528A1 (de) 1985-08-28

Family

ID=6225130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111750A Withdrawn EP0152528A1 (de) 1984-01-17 1984-10-02 Atemschutzmaske mit Überdruck im Maskeninnenraum

Country Status (6)

Country Link
US (1) US4606339A (enrdf_load_stackoverflow)
EP (1) EP0152528A1 (enrdf_load_stackoverflow)
JP (1) JPS60160972A (enrdf_load_stackoverflow)
BR (1) BR8500158A (enrdf_load_stackoverflow)
DE (1) DE3401383A1 (enrdf_load_stackoverflow)
DK (1) DK573584A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371209A3 (de) * 1988-11-28 1991-12-18 Auergesellschaft Gmbh Lungengesteuertes Ventil

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508130A1 (de) * 1985-03-07 1986-09-11 Drägerwerk AG, 2400 Lübeck Lungengesteuertes ventil fuer atemschutzmasken mit ueberdruck im maskeninnenraum
US4819682A (en) * 1986-05-19 1989-04-11 Marcke Karel C Van Pneumatically operable valve
GB8624230D0 (en) * 1986-10-09 1987-02-04 Normalair Garrett Ltd Aircrew breathing systems
CA2011609C (en) * 1990-03-06 1998-09-15 William Edward Price Resuscitation and inhalation device
US5398714A (en) * 1990-03-06 1995-03-21 Price; William E. Resuscitation and inhalation device
US5647355A (en) * 1993-09-30 1997-07-15 Respironics, Inc. Automatic safety valve for respiratory equipment which is counter-balanced and self-adjusting
US5438981A (en) * 1993-09-30 1995-08-08 Respironics, Inc. Automatic safety valve and diffuser for nasal and/or oral gas delivery mask
US5619988A (en) * 1995-10-05 1997-04-15 Minnesota Mining And Manufacturing Company First stage pressure regulator for emergency breathing apparatus
US6098622A (en) * 1998-10-15 2000-08-08 Ntc Technology Inc. Airway valve to facilitate re-breathing, method of operation, and ventilator circuit so equipped
US6123674A (en) * 1998-10-15 2000-09-26 Ntc Technology Inc. Airway valve to facilitate re-breathing, method of operation, and ventilator circuit so equipped
SE521975E8 (sv) * 2001-10-18 2015-10-20 Poseidon Diving Systems Ab Balanserad ventilanordning och andningsregulator innefattande sådan ventilanordning
US8662071B2 (en) * 2011-02-14 2014-03-04 Bsh Home Appliances Corporation Household gas appliance with a magnetically controlled gas supply system
WO2013159067A1 (en) * 2012-04-20 2013-10-24 Martin Bryan A Magnetic field switches

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736331A (en) * 1952-04-01 1956-02-28 Seeler Henry Resuscitator
DE2620170A1 (de) * 1976-05-07 1977-11-17 Draegerwerk Ag Lungengesteuertes pressluftatemgeraet mit ueberdruck in der atemschutzmaske
DE2159807B2 (de) * 1970-12-08 1978-04-13 Lekarska Fakulta, Universita Karlova, Pilsen (Tschechoslowakei) Membrangesteuerter Lungenautomat zum Anschluß an eine Atemmaske oder Endotrachealkanule
GB2057639A (en) * 1979-09-07 1981-04-01 Gretag Ag Shut-off valve
DE3038100A1 (de) * 1979-10-09 1981-04-30 AGA AB, 18181 Lidingö Atemmaske
FR2489931A1 (fr) * 1980-09-11 1982-03-12 Sdecc Mecanisme a membrane commande par differentielle de pression d'eau avec seuil de levee tout ou peu
DE3245717C1 (de) * 1982-12-10 1984-06-07 Drägerwerk AG, 2400 Lübeck Lungengesteuertes Ventil fuer den UEberdruckbetrieb im Maskeninnenraum

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE729638C (de) * 1939-03-23 1942-12-19 Auergesellschaft Ag Lungengesteuertes Sauerstoffatemschutzgeraet, insbesondere Hoehenatemgeraet
US2765802A (en) * 1949-12-31 1956-10-09 Scully Signal Co Magnet controlled shut-off valve
US2764996A (en) * 1952-06-07 1956-10-02 Hupp Corp Multiple range pressure regulator
US2972465A (en) * 1959-05-19 1961-02-21 Gen Controls Co Magnet-assisted diaphragm-valve
AT233341B (de) * 1961-09-04 1964-05-11 Kromschroeder Ag G Ventil
US3121552A (en) * 1962-11-01 1964-02-18 Mine Safety Appliances Co Adjustable fluid pressure controlled valve
US3561466A (en) * 1968-01-08 1971-02-09 Edward Carden Anesthetist{3 s ventilator
US3610237A (en) * 1968-10-07 1971-10-05 Michigan Instr Inc Inhalation positive pressure breathing apparatus
US3866622A (en) * 1972-03-18 1975-02-18 Kawasaki Heavy Ind Ltd Open circuit breathing apparatus
US4273153A (en) * 1979-10-09 1981-06-16 Girard Equipment, Inc. Vibration resistant pressure actuated vacuum breaker

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736331A (en) * 1952-04-01 1956-02-28 Seeler Henry Resuscitator
DE2159807B2 (de) * 1970-12-08 1978-04-13 Lekarska Fakulta, Universita Karlova, Pilsen (Tschechoslowakei) Membrangesteuerter Lungenautomat zum Anschluß an eine Atemmaske oder Endotrachealkanule
DE2620170A1 (de) * 1976-05-07 1977-11-17 Draegerwerk Ag Lungengesteuertes pressluftatemgeraet mit ueberdruck in der atemschutzmaske
GB2057639A (en) * 1979-09-07 1981-04-01 Gretag Ag Shut-off valve
DE3038100A1 (de) * 1979-10-09 1981-04-30 AGA AB, 18181 Lidingö Atemmaske
FR2489931A1 (fr) * 1980-09-11 1982-03-12 Sdecc Mecanisme a membrane commande par differentielle de pression d'eau avec seuil de levee tout ou peu
DE3245717C1 (de) * 1982-12-10 1984-06-07 Drägerwerk AG, 2400 Lübeck Lungengesteuertes Ventil fuer den UEberdruckbetrieb im Maskeninnenraum

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371209A3 (de) * 1988-11-28 1991-12-18 Auergesellschaft Gmbh Lungengesteuertes Ventil

Also Published As

Publication number Publication date
US4606339A (en) 1986-08-19
DE3401383A1 (de) 1985-07-25
DK573584A (da) 1985-07-18
BR8500158A (pt) 1985-08-20
JPS60160972A (ja) 1985-08-22
DK573584D0 (da) 1984-12-03
JPH0254106B2 (enrdf_load_stackoverflow) 1990-11-20

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19841017

AK Designated contracting states

Designated state(s): AT CH DE FR GB LI NL SE

17Q First examination report despatched

Effective date: 19860904

R17C First examination report despatched (corrected)

Effective date: 19870612

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19871209

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WALTHER, HANS-JOACHIM, ING. GRAD.