EP0674918A1 - Dispositif d'oxygène chimique - Google Patents

Dispositif d'oxygène chimique Download PDF

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Publication number
EP0674918A1
EP0674918A1 EP95104634A EP95104634A EP0674918A1 EP 0674918 A1 EP0674918 A1 EP 0674918A1 EP 95104634 A EP95104634 A EP 95104634A EP 95104634 A EP95104634 A EP 95104634A EP 0674918 A1 EP0674918 A1 EP 0674918A1
Authority
EP
European Patent Office
Prior art keywords
chemical
breathing
bag
chemical oxygen
oxygen device
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
EP95104634A
Other languages
German (de)
English (en)
Other versions
EP0674918B1 (fr
Inventor
Michael Dr. Schwichtenberg
Volker Hünnebeck
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.)
Auergesellschaft GmbH
Original Assignee
Auergesellschaft GmbH
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 Auergesellschaft GmbH filed Critical Auergesellschaft GmbH
Publication of EP0674918A1 publication Critical patent/EP0674918A1/fr
Application granted granted Critical
Publication of EP0674918B1 publication Critical patent/EP0674918B1/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
    • A62B7/00—Respiratory apparatus
    • A62B7/08—Respiratory apparatus containing chemicals producing oxygen
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/088—Devices for indicating filter saturation

Definitions

  • the invention relates to a chemical oxygen device according to the preamble of claim 1.
  • Chemical cartridges for breathing apparatus are known in the prior art. Such a chemical cartridge is described in DE 26 35 376 C2.
  • the chemical bounded by an upper and lower space is flowed through by the exhaled air through an end and outer surface of the chemical volume and reaches a breathing bag as breathable air via a central tube provided with holes on the circumference.
  • the disadvantage here is that, in addition to the insufficient flow through the chemical and the associated limitation of the duration of use of such devices due to incomplete use of the chemical during use, there is a considerable strain on the wearer of this respirator due to the need to overcome high breathing resistance.
  • the particle filter is arranged directly on the inhalation valve. As a result, the filter resistance must be overcome when the user inhales.
  • the state of the art also includes chemical oxygen devices, which are offered with a time-controlled consumption display, whereby for safety reasons an incomplete use of the chemical must be calculated during the time of use, since a time control can only ever be independent of the conditions of use.
  • the invention is therefore based on the object of improving the conditions of use of chemical oxygen devices by reducing the breathing resistance and by means of a consumption display which shows the still available supply of breathing gas at all times.
  • the invention is explained in more detail using an exemplary embodiment shown in the drawing.
  • the figure shows a schematic representation of an embodiment of the chemical oxygen device according to the invention.
  • the chemical oxygen device is operated in circulatory breathing.
  • It consists of a portable housing (1) in which two chemical cartridges (2), the chemical as a CO2 binding and O2 releasing substance, e.g. Potassium hyperoxide contained, are arranged side by side.
  • two chemical cartridges (2) the chemical as a CO2 binding and O2 releasing substance, e.g. Potassium hyperoxide contained, are arranged side by side.
  • the chemical cartridges (2) are connected on the exhalation side to a breathing bag (3) for the exhaled air, at the inlet of which there is an exhalation valve (5) in which a blower (8) and on the wall of which a pressure relief valve (11) is arranged.
  • the chemical cartridges (2) are connected to a breathing bag (7) for the inhaled air, a particle filter (6) at the inlet and an inhalation valve (4) at the outlet.
  • an energy source (10) in the housing (1) e.g. a battery or an accumulator arranged.
  • ignition devices (12) are arranged on the bottom thereof. Blower (8), energy source (10) and the ignition devices are electrically connected to an evaluation unit (9).
  • the operator of the chemical oxygen device according to the invention When exhaling, the operator of the chemical oxygen device according to the invention only needs to overcome the breathing resistance of the exhalation valve (5).
  • the blower (8) which is used in chemical oxygen devices for the first time, overcomes the breathing resistance of the chemical cartridges (2) and the particle filter (6).
  • the inventive arrangement of the particle filter (6) at the entrance of the inhalation bag (7) achieved that the operator only has to overcome the breathing resistance of the inhalation valve during inhalation and not, as is customary in solutions of the prior art, by connecting the inhalation valve and filter additionally the breathing resistance of the particle filter (6).
  • the conditions of use of the chemical oxygen device according to the invention are further improved by the evaluation unit (9), which displays the available supply of breathing gas at all times.
  • the display can e.g. by evaluating the device parameters of the blower (8) and the resulting consumption of chemical in the form of the remaining stock.
  • the evaluation unit (9) also serves to display the state of charge of the energy source (10) and to trigger the initial ignitions via the ignition devices (12).
  • the chemical cartridges (2) are designed as double-jacketed containers, which are equipped with a cooling medium, in order to cool the warm inhalation gas produced by an exothermic reaction.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Emergency Medicine (AREA)
  • General Chemical & Material Sciences (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP95104634A 1994-04-02 1995-03-29 Dispositif d'oxygène chimique Expired - Lifetime EP0674918B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4411560 1994-04-02
DE4411560A DE4411560C1 (de) 1994-04-02 1994-04-02 Chemikalsauerstoffgerät

Publications (2)

Publication Number Publication Date
EP0674918A1 true EP0674918A1 (fr) 1995-10-04
EP0674918B1 EP0674918B1 (fr) 1998-10-07

Family

ID=6514557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95104634A Expired - Lifetime EP0674918B1 (fr) 1994-04-02 1995-03-29 Dispositif d'oxygène chimique

Country Status (6)

Country Link
US (1) US5613488A (fr)
EP (1) EP0674918B1 (fr)
AU (1) AU682251B2 (fr)
DE (1) DE4411560C1 (fr)
ES (1) ES2126172T3 (fr)
ZA (1) ZA952720B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6142151A (en) * 1999-04-16 2000-11-07 United Technologies Corporation Spool valve for switching air flows between two beds
DE10304394B4 (de) * 2003-02-04 2005-10-13 Dräger Safety AG & Co. KGaA Atemgerät mit einem Kreislauf für Atemgas
DE102005015275B3 (de) * 2005-03-25 2006-09-28 Msa Auer Gmbh Verfahren und Anordnung zur Ermittlung der Restkapazität an veratembarer Luft für ein Sauerstoff erzeugendes, im Kreislauf betriebenes Atemschutzgerät
GB2427365B (en) * 2005-06-17 2011-03-30 Alex Deas Rebreather with gradual CO2 breakthrough
WO2007109897A1 (fr) * 2006-03-28 2007-10-04 Joseph Fisher Procédé et appareil d'assistance ventilatoire
US9498656B2 (en) 2012-07-11 2016-11-22 B/E Aerospace, Inc. Aircraft crew member protective breathing apparatus
US9545530B2 (en) 2012-07-11 2017-01-17 B/E Aerospace, Inc. Aircraft crew member protective breathing apparatus
WO2015006468A1 (fr) 2013-07-10 2015-01-15 B/E Aerospace, Inc. Appareil respiratoire protecteur destiné aux membres de l'équipage d'un avion
CN104616434B (zh) * 2015-02-11 2017-04-26 徐波 消防员内攻登记系统
CN117734910B (zh) * 2023-09-27 2024-05-24 中国人民解放军海军特色医学中心 用于循环式潜水呼吸器的反应剂罐及使用状态监控方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB445457A (en) * 1934-09-21 1936-04-09 Pirelli Improvements relating to filters and purifiers employed for conditioning air, for example for respiration, by freeing it from poisonous gases and other injurious or undesired constituents
GB1018751A (en) * 1961-08-30 1966-02-02 Universelle De Prod Chim Et D Production of oxygen
US4440162A (en) * 1981-06-23 1984-04-03 Her Majesty The Queen In Right Of Canada Soda lime half life indicator
DE3838531A1 (de) * 1988-11-14 1990-05-17 Wolfgang Gerigk Vorrichtung zur detektierung von verseuchter und vergifteter atemluft
FR2639835A1 (fr) * 1988-12-02 1990-06-08 Draegerwerk Ag Appareil respiratoire avec plusieurs cartouches regeneratrices et sac respiratoire
FR2649897A1 (fr) * 1989-07-19 1991-01-25 Sabre Safety Ltd Appareil pour la protection respiratoire

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1474205A (en) * 1921-10-11 1923-11-13 Mine Safety Appliances Co Gas mask
DE1901243A1 (de) * 1969-01-08 1970-08-13 Auergesellschaft Gmbh Atemschutzgeraet mit Kreislaufatmung
US3692026A (en) * 1969-10-20 1972-09-19 Mine Safety Appliances Co Underwater breathing apparatus
US4019509A (en) * 1975-08-28 1977-04-26 Lockheed Missiles & Space Company, Inc. Self-rescue breathing apparatus
FR2323403A1 (fr) * 1975-09-15 1977-04-08 Spirotech Ind Commerc Appareil respiratoire en circuit ferme
JPS52142897A (en) * 1976-05-24 1977-11-29 Midori Anzen Kogyo Respiring bag for emergency respirator
DE2635376C2 (de) * 1976-08-06 1984-04-05 Drägerwerk AG, 2400 Lübeck Luftreinigungspatrone für Atemschutzgeräte
DE2641576A1 (de) * 1976-09-13 1978-03-16 Auergesellschaft Gmbh Atemschutzgeraet
US4186735A (en) * 1977-04-21 1980-02-05 Flood Michael G Breathing apparatus
US4209491A (en) * 1977-12-21 1980-06-24 Midori Anzen Company, Ltd. Control and monitoring system for oxygen generating device
DE2854166A1 (de) * 1978-12-15 1980-06-19 Draegerwerk Ag Atemschutzgeraet mit einer kuehlvorrichtung
FR2471313A1 (fr) * 1979-12-14 1981-06-19 Mecaniques Applique Lab Appareil respiratoire pour la plongee sous-marine, du type en circuit semi-ferme comportant un faux poumon assiste
DE3109658C2 (de) * 1981-03-13 1984-04-05 Drägerwerk AG, 2400 Lübeck Elektrisch steuerbares Atemschutzgerät nach dem Kreislaufprinzip
DE3202638A1 (de) * 1982-01-28 1983-08-18 Drägerwerk AG, 2400 Lübeck Atemschutzgeraet mit kreislauf der atemluft
DE3515030A1 (de) * 1985-04-25 1986-10-30 Drägerwerk AG, 2400 Lübeck Atemschutzgeraet mit kreislauf der atemluft
US4879996A (en) * 1987-01-13 1989-11-14 Harwood Jr Van N Closed circuit breathing apparatus
US4774942A (en) * 1987-08-28 1988-10-04 Litton Systems, Inc. Balanced exhalation valve for use in a closed loop breathing system
DE3901581A1 (de) * 1989-01-20 1990-08-02 Draegerwerk Ag Atemschutzgeraet mit ueberdruck im kreislauf
DE4126685C2 (de) * 1991-08-13 1994-01-13 Auergesellschaft Gmbh Chemikalpatrone für Atemschutzgeräte
DE4137331C2 (de) * 1991-11-13 1994-09-01 Auergesellschaft Gmbh Chemikalsauerstoffgerät
ZA927931B (en) * 1992-08-24 1994-04-14 Donald Munro Miller Breathing apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB445457A (en) * 1934-09-21 1936-04-09 Pirelli Improvements relating to filters and purifiers employed for conditioning air, for example for respiration, by freeing it from poisonous gases and other injurious or undesired constituents
GB1018751A (en) * 1961-08-30 1966-02-02 Universelle De Prod Chim Et D Production of oxygen
US4440162A (en) * 1981-06-23 1984-04-03 Her Majesty The Queen In Right Of Canada Soda lime half life indicator
DE3838531A1 (de) * 1988-11-14 1990-05-17 Wolfgang Gerigk Vorrichtung zur detektierung von verseuchter und vergifteter atemluft
FR2639835A1 (fr) * 1988-12-02 1990-06-08 Draegerwerk Ag Appareil respiratoire avec plusieurs cartouches regeneratrices et sac respiratoire
FR2649897A1 (fr) * 1989-07-19 1991-01-25 Sabre Safety Ltd Appareil pour la protection respiratoire

Also Published As

Publication number Publication date
ZA952720B (en) 1995-12-21
DE4411560C1 (de) 1995-08-03
ES2126172T3 (es) 1999-03-16
AU682251B2 (en) 1997-09-25
AU1624495A (en) 1995-10-12
EP0674918B1 (fr) 1998-10-07
US5613488A (en) 1997-03-25

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