EP0182979A2 - Dispositif de protection respiratoire comportant la régénération de l'air usé - Google Patents

Dispositif de protection respiratoire comportant la régénération de l'air usé Download PDF

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Publication number
EP0182979A2
EP0182979A2 EP85110550A EP85110550A EP0182979A2 EP 0182979 A2 EP0182979 A2 EP 0182979A2 EP 85110550 A EP85110550 A EP 85110550A EP 85110550 A EP85110550 A EP 85110550A EP 0182979 A2 EP0182979 A2 EP 0182979A2
Authority
EP
European Patent Office
Prior art keywords
breathing
chemical cartridge
connection
protection device
surface cooler
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
EP85110550A
Other languages
German (de)
English (en)
Other versions
EP0182979A3 (en
EP0182979B1 (fr
Inventor
Ernst-Günther Kolbe
Hasso Weinmann
Wolfgang Dipl.-Ing. Drews
Wolfgang Eckstein
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 EP0182979A2 publication Critical patent/EP0182979A2/fr
Publication of EP0182979A3 publication Critical patent/EP0182979A3/de
Application granted granted Critical
Publication of EP0182979B1 publication Critical patent/EP0182979B1/fr
Expired 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
    • A62B21/00—Devices for producing oxygen from chemical substances for respiratory apparatus
    • 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

Definitions

  • the invention relates to a breathing apparatus with regeneration of the breathing air via a C0 2 binding and 0 2 releasing chemical cartridge, which is arranged in the airway between a breathing connection and a breathing bag.
  • Such a breathing apparatus has become known from DE-OS 25 04 881.
  • the chemical cartridge is arranged between a breathing connection and a breathing bag, so that the exhaled air flows into the breathing bag when the chemical cartridge flows horizontally.
  • the air from the breathing bag is returned to the breathing connection via a non-return valve, bypassing the chemical cartridge.
  • a breathing apparatus is used in what is known as circulatory operation.
  • an exothermic reaction takes place, through which CO 2 is bound and 0 2 is released.
  • the heated exhaled air thus regenerated is cooled to such temperatures during its stay in the breathing bag that the wearer can breathe it in again.
  • a disadvantage of the devices in circulatory operation is the fact that they need their own channels or chambers to return the inhaled air, separate from the air flow of the exhaled air. To avoid this, it is known to operate breathing apparatus of the type mentioned in the pendulum system. Both inhaled and exhaled air flow through the chemical cartridge. However, heat exchangers between the chemical cartridge and the breathing connection must then be provided for cooling the inhaled air. Such heat exchangers are known for example from DE-PS 335 931 and from DE-GM 19 18 991.
  • the object of the present invention is seen in improving a breathing apparatus of the type mentioned in such a way that a heat exchanger required for the pendulum operation does not affect its compact design.
  • the solution to the problem is that a surface cooler is provided in the breathing air flow, which is arranged adjacent and at a spatial distance from the surface area of the chemical cartridge.
  • a respirator according to the invention also has a compact design for use in pendulum operation, which enables the wearer to wear the respirator both in the packaged state without bulky protrusion on the body, and in a simple manner directly before use to wear the mouth of the wearer without compromising it with excessive weight or cantilevered design freedom of movement more than it is g eilleren with recirculation also the case in the known respirator.
  • the surface cooler can be designed in such a way that it is arranged in the form of flat and wide piping around the jacket of the chemical cartridge, with a certain distance from the jacket must be kept in order to prevent the surface cooler from heating up and to ensure that it is completely flushed with ambient air.
  • the respiratory protection q is only slightly enlarged on the circumference of the chemical cartridge.
  • the surface cooler can be arranged as a bypass connection between the breathing bag and the breathing connection and can contain a check valve.
  • a chin rest is attached below the breathing connection.
  • the head harness is attached to the surface of the chemical cartridge, also in order to achieve a compact design of the breathing apparatus.
  • the breathing apparatus in the shuttle mode consists of a chemical cartridge 1, on one end face 2 of which the surface cooler 14 is attached to the breathing connection 13, and on the other end face 4 of which the breathing bag 7 is attached. is.
  • the breathing apparatus is attached with the head strap 6.
  • a pressure relief valve 9 is provided on the breathing bag 7.
  • a starter 15 is connected to the chemical cartridge 1, which supplies the oxygen required in the first minutes as long as the chemical filling 3 has not yet reacted.
  • the device wearer exhales through the breathing connection 13 into the lines of the surface cooler 14 arranged in a ring at a distance from the lateral surface 5 of the chemical cartridge 1, its exhaled air reaching the prechamber 11 and from there through the chemical filling 3 into the breathing bag 7.
  • the chemical filling 3 removes C0 2 from the exhaled air by an exothermic reaction and releases 0 2 to it.
  • the breathing air enriched with 0 2 from the breathing bag 7 is again passed through the chemical cartridge 1 into the prechamber 11.
  • the inhaled air absorbs part of the heat of reaction. However, this is released into the environment again during the flow through the surface cooler 14.
  • the flat cable cross-section also proves to be advantageous, since it ensures that the dead space volume for breathing is as small as possible.
  • a chin rest 12 attached to the prechamber 11 serves to facilitate the mounting of the breathing apparatus.
  • a bypass line 16 is provided on the prechamber 11 as a surface cooler as a connection to the breathing bag 7.
  • a check valve 17 is provided in the bypass line 16. Since the breathing bag 7 in circulation for the essential Cooling of the inhaled air ensures, the surface cooler 16 can consist of a simple pipe.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Medicine (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP85110550A 1984-11-24 1985-08-22 Dispositif de protection respiratoire comportant la régénération de l'air usé Expired EP0182979B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843442882 DE3442882A1 (de) 1984-11-24 1984-11-24 Atemschutzgeraet mit regeneration der atemluft
DE3442882 1984-11-24

Publications (3)

Publication Number Publication Date
EP0182979A2 true EP0182979A2 (fr) 1986-06-04
EP0182979A3 EP0182979A3 (en) 1987-01-14
EP0182979B1 EP0182979B1 (fr) 1989-06-14

Family

ID=6251050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110550A Expired EP0182979B1 (fr) 1984-11-24 1985-08-22 Dispositif de protection respiratoire comportant la régénération de l'air usé

Country Status (5)

Country Link
US (1) US4665910A (fr)
EP (1) EP0182979B1 (fr)
JP (1) JPS61131763A (fr)
DE (2) DE3442882A1 (fr)
ZA (1) ZA856638B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609403A1 (fr) * 1987-01-09 1988-07-15 Draegerwerk Ag Appareil respiratoire avec regeneration de l'air respiratoire
GB2233905A (en) * 1989-07-19 1991-01-23 Sabre Safety Ltd Emergency escape breathing apparatus
EP0818217A1 (fr) * 1996-07-11 1998-01-14 Commeinhes Remco Appareil respiratoire à fonctionnement en circuit fermé

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3840606A1 (de) * 1988-12-02 1990-06-07 Draegerwerk Ag Atemschutzgeraet mit mehreren regenerationspatronen und atembeutel
US5301665A (en) * 1991-05-05 1994-04-12 Dragerwerk Aktiengesellschaft Respirator for emergency oxygen supply for passengers in aircraft
US6340024B1 (en) 1993-01-07 2002-01-22 Dme Corporation Protective hood and oral/nasal mask
US6089230A (en) * 1998-11-03 2000-07-18 Be Aerospace Intellectual Property, Inc. Aircraft passenger oxygen delivery unit having shiftable oxygen generating candle
US6880557B2 (en) * 1999-12-06 2005-04-19 Fahrenheit 212 Limited Breathing method and apparatus
SE516250C2 (sv) * 2000-04-28 2001-12-10 Oskar Fraanberg Uppladdningsbar andningsapparat i synnerhet dykapparat
SE1250965A1 (sv) * 2012-08-30 2014-03-01 Oxyreb Ab Ventilanordning och ett återandningssystem innefattande nämnda ventilanordning

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE335931C (de) * 1916-07-23 1921-04-19 Alexander Bernhard Draeger Dr Frei tragbares Atmungsgeraet
GB488666A (en) * 1937-01-19 1938-07-12 Hippolyte Albert Marcel Regnau Improvements in and relating to regenerative breathing apparatus for protection against fumes, powders and noxious gases
DE1132802B (de) * 1960-07-30 1962-07-05 Auergesellschaft Gmbh Sauerstoffatemschutzgeraet mit Pendelatmung
FR1549605A (fr) * 1967-01-20 1968-12-13
US3650269A (en) * 1970-09-25 1972-03-21 Litton Systems Inc Emergency oxygen rebreather system
US4154234A (en) * 1976-05-24 1979-05-15 Midori Anzen Company, Ltd. Breathing bag system for closed circuit breathing apparatus
GB2095120A (en) * 1981-03-20 1982-09-29 Auergesellschaft Gmbh Respirator bags for closed cycle protective devices

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191223654A (en) * 1912-10-16 1913-03-20 William Henry Hill Improvements in, or connected with, Breathing Apparatus for use in Irrespirable Gases in Mines and other Places.
AT83819B (de) * 1917-08-11 1921-05-10 Auergesellschaft Gmbh Zwischenstück für geschlossene Atmungsgeräte.
US2403981A (en) * 1939-11-01 1946-07-16 Mine Safety Appliances Co Breathing apparatus
DE1918991U (de) * 1963-07-18 1965-07-01 Draegerwerk Ag Kohlenmonoxyd-filterselbstretter.
DE1234134C2 (de) * 1965-07-30 1973-11-22 Auergesellschaft Gmbh Filterselbstretter zum schutz gegen kohlenoxyd
DE1259207B (de) * 1966-07-08 1968-01-18 Auergesellschaft Gmbh Atemschutzgeraet mit Pendelatmung
US3938512A (en) * 1974-03-04 1976-02-17 Mine Safety Appliances Company Emergency breathing apparatus
US3893459A (en) * 1974-03-04 1975-07-08 Mine Safety Appliances Co Emergency breathing apparatus
SU585638A1 (ru) * 1975-12-22 1978-08-25 Всесоюзный научно-исследовательский институт горноспасательного дела Шахтный изолирующий самоспасатель на химически св занном кислороде
JPS5478891A (en) * 1977-12-05 1979-06-23 Midori Anzen Kogyo Respirator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE335931C (de) * 1916-07-23 1921-04-19 Alexander Bernhard Draeger Dr Frei tragbares Atmungsgeraet
GB488666A (en) * 1937-01-19 1938-07-12 Hippolyte Albert Marcel Regnau Improvements in and relating to regenerative breathing apparatus for protection against fumes, powders and noxious gases
DE1132802B (de) * 1960-07-30 1962-07-05 Auergesellschaft Gmbh Sauerstoffatemschutzgeraet mit Pendelatmung
FR1549605A (fr) * 1967-01-20 1968-12-13
US3650269A (en) * 1970-09-25 1972-03-21 Litton Systems Inc Emergency oxygen rebreather system
US4154234A (en) * 1976-05-24 1979-05-15 Midori Anzen Company, Ltd. Breathing bag system for closed circuit breathing apparatus
GB2095120A (en) * 1981-03-20 1982-09-29 Auergesellschaft Gmbh Respirator bags for closed cycle protective devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609403A1 (fr) * 1987-01-09 1988-07-15 Draegerwerk Ag Appareil respiratoire avec regeneration de l'air respiratoire
GB2233905A (en) * 1989-07-19 1991-01-23 Sabre Safety Ltd Emergency escape breathing apparatus
EP0818217A1 (fr) * 1996-07-11 1998-01-14 Commeinhes Remco Appareil respiratoire à fonctionnement en circuit fermé
FR2750869A1 (fr) * 1996-07-11 1998-01-16 Commeinhes Remco Appareil respiratoire a fonctionnement en circuit ferme

Also Published As

Publication number Publication date
JPS61131763A (ja) 1986-06-19
EP0182979A3 (en) 1987-01-14
DE3442882A1 (de) 1986-05-28
DE3442882C2 (fr) 1989-03-30
US4665910A (en) 1987-05-19
ZA856638B (en) 1986-07-30
DE3570983D1 (en) 1989-07-20
EP0182979B1 (fr) 1989-06-14
JPH0349270B2 (fr) 1991-07-29

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