EP0221525A2 - Soupape à diaphragme commandée par les poumons pour appareils respiratoires - Google Patents

Soupape à diaphragme commandée par les poumons pour appareils respiratoires Download PDF

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Publication number
EP0221525A2
EP0221525A2 EP86115184A EP86115184A EP0221525A2 EP 0221525 A2 EP0221525 A2 EP 0221525A2 EP 86115184 A EP86115184 A EP 86115184A EP 86115184 A EP86115184 A EP 86115184A EP 0221525 A2 EP0221525 A2 EP 0221525A2
Authority
EP
European Patent Office
Prior art keywords
rocker arm
outer chamber
lung
membrane
chamber housing
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
EP86115184A
Other languages
German (de)
English (en)
Other versions
EP0221525A3 (en
EP0221525B1 (fr
Inventor
Hans Haas
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 EP0221525A2 publication Critical patent/EP0221525A2/fr
Publication of EP0221525A3 publication Critical patent/EP0221525A3/de
Application granted granted Critical
Publication of EP0221525B1 publication Critical patent/EP0221525B1/fr
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
    • A62B9/025—Breathing demand regulators with tilting opening action

Definitions

  • the invention relates to a lung-controlled diaphragm valve for breathing masks with a device for generating a positive pressure in the mask interior, which contains a rocker arm articulated on the outer chamber housing and movably connected at one end to the membrane, which is clamped by spring elements in such a way that it is in a tilt joint a dead position can be moved into a first pressure position exerting a force on the membrane and into a second switch-off position lifting the membrane off the valve lever.
  • a rocker arm is movably attached to the diaphragm at one end and articulated at the other end via a joint block on the outer chamber housing.
  • Coil springs are attached to the same hinge block and are connected to the diaphragm at the level of the rocker arm end connected to the diaphragm by means of pins.
  • the lever arms of coil springs and rocker arms are selected so that when the rocker arm is moved out of the dead position by the tension of the coil springs, a constant pressure, which increases with the deflection, is exerted on the membrane.
  • the rocker arm In the closed position of the inhalation valve, the rocker arm is at the dead center or preferably slightly beyond it.
  • the coil springs then steer it up to a stop in a switch-off position in which the membrane is slightly lifted from the inhalation valve and this is closed stably.
  • the mask wearer When inhaling, the mask wearer must first create a negative pressure that moves the rocker arm past the dead center and opens the inhalation valve. As the inhalation train continues, the deflection of the rocker arm and the additional pressure exerted on the membrane open the inhalation valve further than would be necessary to supply the mask wearer with breathing gas. This creates an overpressure in the interior of the mask, which increases with the intensity of the inhalation and returns to the initial value when the inhalation ends. The diaphragm valve is again in the switch-off position, in which it remains even during exhalation.
  • the present invention is therefore based on the object of improving a lung-controlled diaphragm valve of the type mentioned so that there is constant overpressure in the mask interior throughout the entire breathing cycle, while at the same time preventing the rocker arm from being brought into a stable switch-off position by the movement of the diaphragm , and a deliberate switch-off of the excess pressure is possible at the end of use.
  • the membrane has a driver for the rocker arm projecting into the outer chamber, the residual stroke when the inlet valve is closed is smaller than the remaining rocking distance of the rocker arm between its pressure position and its dead position, and that the outer chamber housing has an actuating element with which the rocker arm can be moved to an end piece of the driver.
  • the advantage of the invention lies mainly in the fact that a stroke limitation is provided for the diaphragm, which prevents the diaphragm from bringing the rocker arm into the region of the dead center when gas is interrupted or exhaled.
  • the rocker arm remains constantly in the pressure position during use.
  • the excess pressure in the interior of the mask is maintained during breathing, even when the inlet valve is closed, and the device wearer does not need to generate a vacuum at the beginning of the inhalation phase in order to open the inlet valve.
  • the membrane can probably be lifted off the valve lever, however, this does not move the rocker arm to its stable switch-off position, but it still exerts its compressive force on the membrane, so that even for the desired static pressure in the Mask interior required force is exerted on the membrane.
  • the diaphragm valve can be brought into a stable switch-off position with the actuating element.
  • the rocker arm is moved from the pressure position beyond its dead position into its switch-off position, whereby it engages the end piece of the driver and lifts it as a stop by the distance of the remaining stroke against the inner wall of the outer chamber housing.
  • the diaphragm is released from the valve lever by the same amount. This ensures a safe shutdown of the diaphragm valve and then a separation of the respiratory mask from the face or from the diaphragm valve is possible without loss of breathing gas.
  • a particularly favorable embodiment for actuating the rocker arm in the switch-off position is achieved in that the rocker arm is divided as a two-arm lever into a pressure arm and a switch-off arm and the actuating element acts on the switch-off arm.
  • the user of the diaphragm valve simply tilts the rocker arm into its switch-off position by depressing the actuating element.
  • a practical and particularly efficient design of the tilt joint results from the fact that it is held by a bracket anchored in the outer chamber housing.
  • the actuating element is a button-like, elastically deformable thickening of a coating surrounding the outer chamber housing, which is embedded in the outer chamber housing.
  • the actuation element is guided and reset without further effort only by the inherent elasticity, while the coating at the same time reliably prevents the ingress of dirt and the resulting blocking.
  • a favorable design of the driver is that it is designed as a pin, the shaft is gripped by the rocker arm and the end piece consists of a plunger.
  • This plunger is located when the inlet valve is closed and is resting on the diaphragm Rocker arm spaced apart from the inner wall of the outer chamber housing.
  • the rocker arm is actuated in the switch-off position, its fork-shaped end piece is pressed around the shaft against the plunger and pulls it towards the inner wall of the outer chamber housing until it stops.
  • the inlet valve is then relieved.
  • the tappet takes the rocker arm back into the pressure position.
  • a particularly simple construction of the spring elements can be realized in such a way that they consist of coil springs which are arranged lying on both sides of the rocker arm in one plane.
  • the rocker arm is preferably widened so far at its fork-shaped end that it covers the free distance between the coil springs. This ensures that when the dead position of the rocker arm is reached, the coil springs represent a detent both from the pressure position to the switch-off position and vice versa.
  • An additional securing of the respective stable end positions of the rocker arm is thus achieved and prevents the rocker arm from being inadvertently moved from its switch-off position into the pressure position, for example by external vibrations.
  • the diaphragm valve shown in FIG. 1 consists of a valve housing 1, which is divided by the diaphragm 2 into an outer chamber 3 which is connected to the atmosphere and a valve chamber 4 which carries the breathing gas.
  • the valve chamber 4 has a connecting piece 5 to which a respirator mask, not shown, can be coupled.
  • the valve chamber 4 is connected to the inlet valve 6, to which a connecting piece 7 for the fresh gas is connected.
  • a valve lever 8 projects into the valve chamber 4 and touches the membrane 2 at a central point.
  • the membrane 2 has at its center a driver 9 designed as a pin, the shaft 10 of which has a plunger 12 on its side facing the inner wall of the outer chamber housing 11.
  • Two helical springs 13 are tensioned transversely through the outer chamber 3, the ends of which are anchored to the fastening piece 14 of the outer chamber housing 11 and to the retaining webs 15 of the rocker arm 16.
  • a bracket 17 embedded in the outer chamber housing 11 holds the rocker arm 16 at its rocker joints 18.
  • the rocker arms 18 are arranged in a close spatial distance from the holding webs 15 of the rocker arm 16.
  • the diaphragm valve shown in FIG. 1 is shown in the state in which the inlet valve 6 is closed and the diaphragm 2 rests on the valve lever 8.
  • the rocker arm 16 rests with its pressure arm 21 under spring pressure on the membrane, so that the plunger 12 is held at a distance a, the remaining stroke, from the inside of the outer chamber housing 11.
  • the point of contact of the rocker arm 16 the membrane 2 is at a distance b, shown as a double arrow, the remaining rocking distance from the dead position of the rocker arm 16 shown as a dash-dotted line.
  • the dead position of the rocker arm 16 is determined by the plane in which the center lines of the coil springs 13 and the rocker joint 18 lie.
  • the top view of the rocker arm 16 shown in FIG. 2 shows the clamping position of the two coil springs 13.
  • the rocker arm 16 comprises the shaft 10 of the driver 9 in a fork-shaped manner, the fork end 22 having extensions 23 which cover the clear distance between the coil springs 13 from one another.
  • the coil springs 13 When passing through the dead position of the rocker arm, the coil springs 13 must be pressed apart by a small amount, so that the coil springs 13 also act as detents.

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)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
EP86115184A 1985-11-08 1986-11-03 Soupape à diaphragme commandée par les poumons pour appareils respiratoires Expired - Lifetime EP0221525B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853539668 DE3539668A1 (de) 1985-11-08 1985-11-08 Lungengesteuertes membranventil fuer atemschutzmasken
DE3539668 1985-11-08

Publications (3)

Publication Number Publication Date
EP0221525A2 true EP0221525A2 (fr) 1987-05-13
EP0221525A3 EP0221525A3 (en) 1988-09-21
EP0221525B1 EP0221525B1 (fr) 1991-01-23

Family

ID=6285495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115184A Expired - Lifetime EP0221525B1 (fr) 1985-11-08 1986-11-03 Soupape à diaphragme commandée par les poumons pour appareils respiratoires

Country Status (10)

Country Link
US (1) US4715371A (fr)
EP (1) EP0221525B1 (fr)
JP (1) JPS62114569A (fr)
CN (1) CN86107621B (fr)
AU (1) AU582285B2 (fr)
BR (1) BR8605514A (fr)
CA (1) CA1285453C (fr)
DE (2) DE3539668A1 (fr)
SU (1) SU1489576A3 (fr)
ZA (1) ZA868190B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334147A1 (fr) * 1988-03-24 1989-09-27 Bayer Ag Pyrroles disubstitués
EP0371209A3 (fr) * 1988-11-28 1991-12-18 Auergesellschaft Gmbh Clapet contrôlé par action pulmonaire
DE102019108790A1 (de) * 2019-04-03 2020-10-08 BartelsRieger Atemschutztechnik GmbH Lungenautomat, insbesondere für ein Atemschutzgerät

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2583327Y2 (ja) * 1991-02-05 1998-10-22 川重防災工業株式会社 開放式呼吸器の肺力弁
DE4237294C1 (de) * 1992-11-05 1993-11-25 Draegerwerk Ag Atemschutzmaske mit Überdruck im Maskeninnenraum
US5357950A (en) * 1993-03-02 1994-10-25 Comasec International S.A. Breath actuated positive pressure demand regulator with override
GB9319580D0 (en) * 1993-09-22 1993-11-10 Racal Health & Safety Ltd Valves
CA3009824C (fr) 2015-12-30 2023-12-05 Scott Technologies, Inc. Masque respiratoire dote d'un commutateur d'economiseur d'air

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790454A (en) * 1951-12-17 1957-04-30 Scott Aviation Corp Demand fluid regulator
US2760507A (en) * 1952-02-07 1956-08-28 Scott Aviation Corp Demand pressure regulator
DE1080404B (de) * 1957-07-20 1960-04-21 Draegerwerk Ag Lungengesteuertes Membranventil fuer Druckgasatemgeraete
DE2735275A1 (de) * 1977-08-05 1979-02-15 Matter Gmbh Kg Kurt Einatemventil fuer druckgas-atemschutzgeraete und tauchgeraete
SE428760B (sv) * 1979-10-09 1983-07-25 Aga Ab Andningsmask
FR2511252A1 (fr) * 1982-04-02 1983-02-18 Fenzy Sa Embout pour appareil respiratoire pour le raccordement du masque a une bouteille de gaz respiratoire
DE3245717C1 (de) * 1982-12-10 1984-06-07 Drägerwerk AG, 2400 Lübeck Lungengesteuertes Ventil fuer den UEberdruckbetrieb im Maskeninnenraum

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334147A1 (fr) * 1988-03-24 1989-09-27 Bayer Ag Pyrroles disubstitués
EP0371209A3 (fr) * 1988-11-28 1991-12-18 Auergesellschaft Gmbh Clapet contrôlé par action pulmonaire
DE102019108790A1 (de) * 2019-04-03 2020-10-08 BartelsRieger Atemschutztechnik GmbH Lungenautomat, insbesondere für ein Atemschutzgerät
DE102019108790B4 (de) * 2019-04-03 2020-11-19 BartelsRieger Atemschutztechnik GmbH Lungenautomat, insbesondere für ein Atemschutzgerät

Also Published As

Publication number Publication date
DE3539668A1 (de) 1987-05-21
ZA868190B (en) 1987-06-24
CN86107621B (zh) 1988-08-03
CA1285453C (fr) 1991-07-02
JPH031034B2 (fr) 1991-01-09
BR8605514A (pt) 1987-08-11
JPS62114569A (ja) 1987-05-26
EP0221525A3 (en) 1988-09-21
CN86107621A (zh) 1987-08-05
AU582285B2 (en) 1989-03-16
DE3677133D1 (de) 1991-02-28
DE3539668C2 (fr) 1989-11-02
EP0221525B1 (fr) 1991-01-23
SU1489576A3 (ru) 1989-06-23
US4715371A (en) 1987-12-29
AU6494686A (en) 1987-05-14

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