EP0155991A1 - Appareil respiratoire pour la protection contre le monoxyde de carbone - Google Patents

Appareil respiratoire pour la protection contre le monoxyde de carbone Download PDF

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Publication number
EP0155991A1
EP0155991A1 EP84111817A EP84111817A EP0155991A1 EP 0155991 A1 EP0155991 A1 EP 0155991A1 EP 84111817 A EP84111817 A EP 84111817A EP 84111817 A EP84111817 A EP 84111817A EP 0155991 A1 EP0155991 A1 EP 0155991A1
Authority
EP
European Patent Office
Prior art keywords
carbon monoxide
catalyst
inhaled air
drying agent
filter
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Withdrawn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
EP84111817A
Other languages
German (de)
English (en)
Inventor
Carl-Ernst Dr. Van Der Smissen
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 EP0155991A1 publication Critical patent/EP0155991A1/fr
Withdrawn legal-status Critical Current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
    • A62B19/00—Cartridges with absorbing substances for respiratory apparatus
    • A62B19/02—Cartridges with absorbing substances for respiratory apparatus with oxidising agents

Definitions

  • the invention relates to a carbon oxide breathing apparatus with a filter device through which the inhaled and exhaled air flows and which contains a CO catalyst.
  • the device provided according to the invention differs fundamentally from all corresponding respiratory protective devices that have been used in practice so far.
  • Their filter devices for protection against carbon oxide contain a contact substance (catalyst) made from a mixture of copper oxide and manganese dioxide, which is known under the name hopkalite. Hopkalit is very quickly poisoned by the absorption of moisture. Therefore, the catalyst must be protected against the harmful effects of atmospheric humidity by a very effective drying agent. To achieve sufficient holding times, a lot of desiccant must be connected upstream to dry the inhaled air to be filtered. Nevertheless, hopkalite filters require a great deal of effort for water vapor-tight packaging.
  • hopkalite without desiccants only allows for short operating times; Respiratory protective devices equipped in this way can only be used for special tasks.
  • a carbon oxide filter self-rescuer in which a filter container is connected to a breath connection, such as a mouthpiece or respirator.
  • the breath connection is provided with an exhalation valve.
  • the filter housing contains a carbon oxide oxidizing catalyst, the hopkalite, and further filter material layers, which protect the catalyst against moisture, in particular as a drying agent.
  • the filter housing is in open connection with the mouthpiece or mask interior without the interposition of an inhalation valve.
  • the exhalation resistance of the exhalation valve is less than the inhalation resistance of the filter mass. This prevents the exhaled air from flowing back through the filter material.
  • the moisture sensitivity of the catalyst is a particular difficulty. It requires the arrangement of the desiccant, which increases weight, volume and breathing resistance.
  • the service life of the device is limited by the drying capacity of the available drying agent. The device can only be made available if it is moisture-proof, i.e. expensive and sensitive water vapor-tight packaging is required. If the leakage goes unnoticed, the rescue function of the device is thwarted.
  • Dräger booklet 320 reports on the "Dräger PARATmask and device variants".
  • the device concept is based on the demand to rescue people of all ages from fire-smoky buildings with a breathing apparatus that is available in a universal size.
  • a container that is tightly sealed on all sides protects the CO filter contained in the Parat mask from water vapor from the surrounding area Atmosphere and ensures that the device is ready for operation for many years.
  • Each packaging container is individually leak tested after being closed and before delivery.
  • No valves were used here, the operation is carried out with pendulum breathing.
  • the object of the invention is to improve a carbon oxide respirator so that it is insensitive to rough treatment with a smaller and lighter construction size and ensures a much longer holding time even after a long preparation time.
  • the advantages achieved with the invention consist in particular in the fact that it has become possible to use a CO catalyst directly without an additional drying agent.
  • the Pt catalyst remains non-poisoned when operated intermittently; this means that both the inhaled air and the exhaled air are passed through the carbon oxide filter in succession.
  • the functionality remains at normal temperature, so that a complete conversion of carbon oxide with air-oxygen is guaranteed.
  • This filter is insensitive to the influence of air humidity. It differs fundamentally from all other previously used respiratory protection filters for protection against carbon oxide.
  • the absence of a desiccant makes the device much smaller, lighter and less sensitive.
  • the standby tank no longer has to be water vapor tight and can only be designed with due regard to the mechanical stress.
  • the drawing shows a schematic longitudinal section through a breathing apparatus provided as a CO filter self-rescuer.
  • the carbon oxide filter self-rescuer is contained in a standby container so that it is protected against mechanical damage and contamination when it is deposited near the work site or worn on the body.
  • the device consists of the filter housing 1, in which the Pt catalytic converter 2 is accommodated between flow-friendly holding surfaces 3.
  • a pre-filter layer 4 retains the dust.
  • a cover 5 closes off the filter housing 1.
  • the filter housing 1 is supplemented by a mouthpiece housing 6.
  • This has a mouthpiece 7 with a nose clip 8 for the inhalation opening.
  • the carbon oxide filter self-rescuer according to the invention is ventilated in alternate breathing, that is, it is inhaled 9 as well as exhaled 10 in the same way.
  • the Pt catalyst 2 is a metal from the group of platinum metals, such as platinum, palladium or rhodium on a carrier made of activated carbon, aluminum oxide, etc.
EP84111817A 1984-02-14 1984-10-03 Appareil respiratoire pour la protection contre le monoxyde de carbone Withdrawn EP0155991A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3405098 1984-02-14
DE19843405098 DE3405098A1 (de) 1984-02-14 1984-02-14 Kohlenoxid-atemschutzgeraet

Publications (1)

Publication Number Publication Date
EP0155991A1 true EP0155991A1 (fr) 1985-10-02

Family

ID=6227593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111817A Withdrawn EP0155991A1 (fr) 1984-02-14 1984-10-03 Appareil respiratoire pour la protection contre le monoxyde de carbone

Country Status (3)

Country Link
EP (1) EP0155991A1 (fr)
JP (1) JPS60199466A (fr)
DE (1) DE3405098A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0193861A2 (fr) * 1985-03-02 1986-09-10 Drägerwerk Aktiengesellschaft Filtre à air respiratoire contre le monoxyde de carbone
GB2255285A (en) * 1991-04-26 1992-11-04 William George Lyne Air purifier
GB2275612A (en) * 1993-02-11 1994-09-07 Coal Ind Improvements in or relating to respiratory protective equipment
GB2282329A (en) * 1993-09-08 1995-04-05 Coal Ind Respiratory protective equipment
GB2291807A (en) * 1994-07-28 1996-02-07 Multifabs Survival Ltd Breathing device with mouthpiece and nose clip

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW287952B (fr) * 1994-08-31 1996-10-11 Lifepro Inc
US5964218A (en) * 1994-08-31 1999-10-12 Lifepro, Inc. Face mask with back-up smoke inhalation protection and method of operation
WO1996011037A1 (fr) * 1994-10-06 1996-04-18 Philip Michael Leworthy Dispositif de filtrage
KR101332199B1 (ko) * 2012-06-21 2013-11-25 주식회사 이엠따블유에너지 휴대용 공기 정화기

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR864827A (fr) * 1940-01-16 1941-05-06 Perfectionnements aux moyens de protection contre les gaz de combat
DE1246416B (de) * 1965-05-17 1967-08-03 Draegerwerk Ag Kohlenmonoxyd-Filterselbstretter
DE2811627A1 (de) * 1977-03-18 1978-09-21 Matsushita Electric Ind Co Ltd Verfahren zur reinigung von kohlenmonoxidhaltiger luft

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1585061A (en) * 1977-03-15 1981-02-25 Nat Res Dev Synthesis of peptides
JPS5784744A (en) * 1980-11-17 1982-05-27 Showa Denko Kk Catalyst for removing carbon monooxide used in gas mask
DE3400505A1 (de) * 1984-01-10 1985-07-18 Drägerwerk AG, 2400 Lübeck Atemschutzgeraet mit schutzhaube

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR864827A (fr) * 1940-01-16 1941-05-06 Perfectionnements aux moyens de protection contre les gaz de combat
DE1246416B (de) * 1965-05-17 1967-08-03 Draegerwerk Ag Kohlenmonoxyd-Filterselbstretter
DE2811627A1 (de) * 1977-03-18 1978-09-21 Matsushita Electric Ind Co Ltd Verfahren zur reinigung von kohlenmonoxidhaltiger luft

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 225, 6. Oktober 1983, Seite (C-189) (1370); & JP-A-58-119338 (KOUGIYOU KAIHATSU) 15-07-1983; & JP-A-58-119339 (KOUGIYOU KAIHATSU) 15-07-1983 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0193861A2 (fr) * 1985-03-02 1986-09-10 Drägerwerk Aktiengesellschaft Filtre à air respiratoire contre le monoxyde de carbone
EP0193861A3 (fr) * 1985-03-02 1989-02-22 Drägerwerk Aktiengesellschaft Filtre à air respiratoire contre le monoxyde de carbone
GB2255285A (en) * 1991-04-26 1992-11-04 William George Lyne Air purifier
GB2275612A (en) * 1993-02-11 1994-09-07 Coal Ind Improvements in or relating to respiratory protective equipment
GB2282329A (en) * 1993-09-08 1995-04-05 Coal Ind Respiratory protective equipment
GB2291807A (en) * 1994-07-28 1996-02-07 Multifabs Survival Ltd Breathing device with mouthpiece and nose clip
GB2291807B (en) * 1994-07-28 1998-07-29 Multifabs Survival Ltd Improvements in or relating to breathing devices

Also Published As

Publication number Publication date
JPS60199466A (ja) 1985-10-08
DE3405098A1 (de) 1985-08-29

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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: 19841025

AK Designated contracting states

Designated state(s): BE DE FR GB NL

17Q First examination report despatched

Effective date: 19860826

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870414

RIN1 Information on inventor provided before grant (corrected)

Inventor name: VAN DER SMISSEN, CARL-ERNST, DR.