EP0242703A2 - Cartouche pour la régénération de l'air respiratoire - Google Patents

Cartouche pour la régénération de l'air respiratoire Download PDF

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Publication number
EP0242703A2
EP0242703A2 EP87105177A EP87105177A EP0242703A2 EP 0242703 A2 EP0242703 A2 EP 0242703A2 EP 87105177 A EP87105177 A EP 87105177A EP 87105177 A EP87105177 A EP 87105177A EP 0242703 A2 EP0242703 A2 EP 0242703A2
Authority
EP
European Patent Office
Prior art keywords
cartridge
filling
container
flow
cartridge according
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Withdrawn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
EP87105177A
Other languages
German (de)
English (en)
Other versions
EP0242703A3 (fr
Inventor
Günther Kolbe
Hasso Weinmann
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 EP0242703A2 publication Critical patent/EP0242703A2/fr
Publication of EP0242703A3 publication Critical patent/EP0242703A3/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Withdrawn legal-status Critical Current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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes

Definitions

  • the invention relates to a cartridge for processing breathing gas with an axially flowable chemical filling arranged in a container between permeable bottoms.
  • cartridges are used, for example, in breathing apparatuses with a closed breathing circuit to generate oxygen by chemical means.
  • cartridges which have, for example, a filling of activated carbon for the retention of gaseous pollutants in a breathing apparatus should also be understood to be the cartridges mentioned.
  • Such a cartridge for processing breathing gas has become known from EP-A1 125 157.
  • a cartridge specified which contains a chemical, for example KO2, which generates oxygen with binding of the exhaled CO2 in a housing with an inlet and an outlet for the breathing gas within two parallel, perforated intermediate floors.
  • a chemical for example KO2
  • Another cartridge for processing the breathing gas is known (DE-OS 25 04 881), in which the chemical is accommodated between two flat sieve trays and which forms a flow connection between a breathing mask and a breathing bag.
  • the chemical layer through which the breathing air flows has a constant layer thickness in the direction of flow.
  • the cartridge shows, especially when the device wearer is busy, that the flow in the center area of the cartridge filling is stronger than in the edge area.
  • the chemical is therefore used up prematurely in the middle area and no longer releases oxygen there, or the gaseous pollutant to be retained breaks through, for example in an activated carbon bed, before the content of the chemical filling in the peripheral area is used up.
  • Cartridges with plane-parallel bottoms can only be made vibration-resistant with increased additional effort if they are to remain functional during a longer period of use.
  • the invention is therefore based on the object to improve a cartridge for the treatment of breathing gas of the type mentioned so that the chemical filling is consumed evenly at higher flow rates, that local breakthroughs are avoided and that a vibration-resistant design of the floors is achieved without additional effort.
  • the object is achieved in that the filling space has an increasing height as seen in the flow direction from the wall of the container to the center of the container.
  • the advantage of the invention is particularly to be seen in the fact that the breathing air is processed uniformly over the entire area of the cartridge filling, so that the equipment wearer can use a usable cartridge for as long as possible even with strenuous work and increased breathing activity.
  • the cartridge is inserted in a breathing apparatus: whether it is installed in a further, enclosing housing with inlet and outlet ports for the breathing air, or alone in a suitable form in a breathing apparatus is used to process the breathing gas.
  • a particularly favorable design of the cartridge is achieved in that the filling space is plano-convex or biconvex. Both versions can be used both for cartridges with air flowing through them and for cartridges with air flowing through them on both sides (reciprocal breathing). Due to the curvature, increased vibration and vibration resistance is achieved.
  • the bottoms are expediently designed as sieve plates, since they leave the entire flow area of the filling space free for the breathing air flow and thus ensure the uniform flow.
  • the domed floors can be stepped, i.e. the bulges are indented as steps. They can be rectangular or round, similar to a bead.
  • the single figure shows a cartridge in cross section, which contains a filling space (1) for a granular oxygen-emitting chemical, for example, between a container wall (2) and two curved sieve plates (3, 4) as bottoms.
  • the two sieve plates (3, 4) are curved so that the filling in space (1) has a biconvex cross section and its end faces (5, 6) on the the respective sieve plates (3,4).
  • the filling space (1) is designed to have an increasing height from the wall (2) to the center of the container, represented by the double arrow H, in the flow direction (7).
  • the sieve plate (4) is held on the container wall (2) by a flange (8).

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Pulmonology (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP87105177A 1986-04-17 1987-04-08 Cartouche pour la régénération de l'air respiratoire Withdrawn EP0242703A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3612924 1986-04-17
DE19863612924 DE3612924A1 (de) 1986-04-17 1986-04-17 Patrone zur aufbereitung von atemgas

Publications (2)

Publication Number Publication Date
EP0242703A2 true EP0242703A2 (fr) 1987-10-28
EP0242703A3 EP0242703A3 (fr) 1989-05-17

Family

ID=6298872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105177A Withdrawn EP0242703A3 (fr) 1986-04-17 1987-04-08 Cartouche pour la régénération de l'air respiratoire

Country Status (4)

Country Link
EP (1) EP0242703A3 (fr)
JP (1) JPS62253084A (fr)
DE (1) DE3612924A1 (fr)
ZA (1) ZA87267B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996022126A1 (fr) * 1995-01-20 1996-07-25 Minnesota Mining And Manufacturing Company Appareil respiratoire dote d'un element filtre compressible et insere en force

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4115404A1 (de) * 1991-05-10 1992-11-12 Mgf Gutsche & Co Gmbh Betriebs Verfahren zum herstellen eines filtermediums und danach hergestelltes filtermedium
JP6296655B2 (ja) * 2014-06-03 2018-03-20 泉工医科工業株式会社 二酸化炭素吸収剤用包装体及び二酸化炭素吸収剤ユニット

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE610048C (de) * 1935-03-01 Bernh Draeger Atmungseinsatz fuer Gasmasken
DE424078C (de) * 1922-03-03 1926-01-16 Alexander Bernhard Draeger Dr Gehaeuse fuer Luftreinigungspatronen
US1963874A (en) * 1931-01-26 1934-06-19 Bernhard Drager Gas mask canister
FR1406845A (fr) * 1964-09-04 1965-07-23 Martindale Electric Company Tampons filtrants pour masques sanitaires et masques sanitaires comportant des tampons de ce genre
FR2116657A5 (fr) * 1970-12-02 1972-07-21 Air Liquide
US3893459A (en) * 1974-03-04 1975-07-08 Mine Safety Appliances Co Emergency breathing apparatus
IT1038546B (it) * 1975-05-28 1979-11-30 Pirelli Diaframma di supporto del materiale filtrante per mascheredi respira zione
FR2544204B1 (fr) * 1983-04-12 1987-09-11 Air Liquide Appareil de respiration a generation chimique d'oxygene
US4543112A (en) * 1984-04-30 1985-09-24 Figgie International Inc. Sorbent type filter assembly for a respirator and method of making same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996022126A1 (fr) * 1995-01-20 1996-07-25 Minnesota Mining And Manufacturing Company Appareil respiratoire dote d'un element filtre compressible et insere en force
US6216693B1 (en) 1995-01-20 2001-04-17 3M Innovative Properties Company Respirator having a compressible press fir filter element

Also Published As

Publication number Publication date
EP0242703A3 (fr) 1989-05-17
JPS62253084A (ja) 1987-11-04
ZA87267B (en) 1987-08-26
DE3612924A1 (de) 1987-10-22

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Inventor name: WEINMANN, HASSO

Inventor name: KOLBE, GUENTHER