EP0221525B1 - Lungengesteuertes Membranventil für Atemschutzmasken - Google Patents

Lungengesteuertes Membranventil für Atemschutzmasken Download PDF

Info

Publication number
EP0221525B1
EP0221525B1 EP86115184A EP86115184A EP0221525B1 EP 0221525 B1 EP0221525 B1 EP 0221525B1 EP 86115184 A EP86115184 A EP 86115184A EP 86115184 A EP86115184 A EP 86115184A EP 0221525 B1 EP0221525 B1 EP 0221525B1
Authority
EP
European Patent Office
Prior art keywords
lung
outer chamber
lever
rocking
membrane
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
EP86115184A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0221525A2 (de
EP0221525A3 (en
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/de
Publication of EP0221525A3 publication Critical patent/EP0221525A3/de
Application granted granted Critical
Publication of EP0221525B1 publication Critical patent/EP0221525B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 pulling 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 vacuum which 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 in such a way that an overpressure prevails in the interior of the mask 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 remaining stroke of which, when the inlet valve is closed, is smaller than the residual rocking distance of the rocker arm between its pressure position and its dead position, and in that the outer chamber housing has an actuating element which the rocker arm is movable 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 diaphragm can probably be lifted off the valve lift, however, this does not move the rocker arm to its stable switch-off position, but it still exerts its compressive force on the diaphragm, so that even for the desired static pressure in the Mask interior required force is exerted on the membrane.
  • 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 rocking lever 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 its own elasticity, while the coating at the same time reliably prevents the ingress of dirt and the blocking caused thereby.
  • 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 at a spatial distance from the inner wall of the outer chamber housing when the inlet valve is closed and the rocker arm resting on the diaphragm.
  • 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 at its fork-shaped end to such an extent that it covers the free spacing of the coil springs from one another. 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 connection piece 5, to which a breathing 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 tappet 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 on the diaphragm 2 is a distance b, shown as a double arrow, the remaining rocking distance from the dead center 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.
  • FIG. 2 shows a top view of the rocker arm 16 showing the clamping position of the two coil springs 13.
  • the rocker arm 16 includes the shaft 10 of the driver 9 in a fork shape, the fork end 22 has 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 pushed 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 Lungengesteuertes Membranventil für Atemschutzmasken Expired - Lifetime EP0221525B1 (de)

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 EP0221525A2 (de) 1987-05-13
EP0221525A3 EP0221525A3 (en) 1988-09-21
EP0221525B1 true EP0221525B1 (de) 1991-01-23

Family

ID=6285495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115184A Expired - Lifetime EP0221525B1 (de) 1985-11-08 1986-11-03 Lungengesteuertes Membranventil für Atemschutzmasken

Country Status (10)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO890988L (no) * 1988-03-24 1989-09-25 Bayer Ag Disubstituerte pyrroler.
DE3840058A1 (de) * 1988-11-28 1990-05-31 Auergesellschaft Gmbh Lungengesteuertes ventil
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
WO2017116999A1 (en) 2015-12-30 2017-07-06 Scott Technologies, Inc. Respirator mask with air-saver switch
DE102019108790B4 (de) * 2019-04-03 2020-11-19 BartelsRieger Atemschutztechnik GmbH Lungenautomat, insbesondere für ein Atemschutzgerät

Citations (1)

* 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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (1)

* 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

Also Published As

Publication number Publication date
SU1489576A3 (ru) 1989-06-23
CN86107621B (zh) 1988-08-03
CN86107621A (zh) 1987-08-05
EP0221525A2 (de) 1987-05-13
JPH031034B2 (enrdf_load_stackoverflow) 1991-01-09
CA1285453C (en) 1991-07-02
AU6494686A (en) 1987-05-14
JPS62114569A (ja) 1987-05-26
DE3539668C2 (enrdf_load_stackoverflow) 1989-11-02
AU582285B2 (en) 1989-03-16
US4715371A (en) 1987-12-29
DE3539668A1 (de) 1987-05-21
EP0221525A3 (en) 1988-09-21
ZA868190B (en) 1987-06-24
BR8605514A (pt) 1987-08-11
DE3677133D1 (de) 1991-02-28

Similar Documents

Publication Publication Date Title
EP0371209B1 (de) Lungengesteuertes Ventil
DE1750998C3 (de) Bedienungsorgan für einen Ventilschaft eines Sprühventils
DE2949402C2 (de) Einrichtung zur Versorgung eines Tauchers mit Atemluft und zur bedarfsweisen Auftriebsänderung
EP0088298A1 (de) Zahnärztliches Spritzhandstück
DE4436051A1 (de) Vorrichtung zum Betätigen von Aerosolabgabegeräten
DE2645675C3 (de) Beatmungsventil für Beatmungsgeräte
DE1566580B2 (de) Zyklussteuerung für ein Beatmungsgerät
EP0221525B1 (de) Lungengesteuertes Membranventil für Atemschutzmasken
DE2541303B2 (de) Handbetätigter Lungenventilationsapparat mit einer selbst ausweitenden Blase
DE2110206C3 (de) Lungengesteuertes Atemgerät
EP0325194B1 (de) Schaltbares Ueberdruckventil für strömende Medien
DE2646338C3 (de) Lungengesteuertes Membranventil für Druckgasatemgeräte
DE2429541C3 (de) Anästhesie-Beatmungsvorrichtung mit einer auf spontane Atemversuche ansprechenden Steuermembran
DE102016000268B4 (de) Kreislaufatemgerät mit einer Luftbeutelanordnung
DE1778225B1 (de) Druckkochtopf mit ovalem deckel
DE69515920T2 (de) Maske für Atmungsgerät zum Versorgung mit druck- bzw. druckloser Luft
DE2220727A1 (de) Einrichtung zur erzeugung des anpressdruckes fuer spulvorrichtungen
DE2227066C2 (de) Warnvorrichtung für ein Atemgerät
DE2846263C2 (de) Sicherheitsventil mit auswechselbarem Schmutzfilter
DE2649559C2 (de) Verschluß für Sicherheitsgurte
DE60117025T2 (de) Ventilvorrichtung
DE1131998B (de) Druckgasatemschutzgeraet mit einem durch eine Membran lungengesteuerten Atemgaszufuehrungsventil
DE961456C (de) Elektromagnetisches, mit Zeitverzoegerung arbeitendes Schaltgeraet
DE2338596B2 (de) Blutdruckmesser mit Ablaßventil
AT215442B (de) Stempelvorrichtung

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: 19861120

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB SE

17Q First examination report despatched

Effective date: 19900529

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3677133

Country of ref document: DE

Date of ref document: 19910228

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 86115184.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19981117

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19981120

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991104

EUG Se: european patent has lapsed

Ref document number: 86115184.3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20021021

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20021128

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040602

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20031103