EP0488880A1 - Vollschutzausrüstung - Google Patents

Vollschutzausrüstung Download PDF

Info

Publication number
EP0488880A1
EP0488880A1 EP91403195A EP91403195A EP0488880A1 EP 0488880 A1 EP0488880 A1 EP 0488880A1 EP 91403195 A EP91403195 A EP 91403195A EP 91403195 A EP91403195 A EP 91403195A EP 0488880 A1 EP0488880 A1 EP 0488880A1
Authority
EP
European Patent Office
Prior art keywords
circuit
respiratory
helmet
garment
gas
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
EP91403195A
Other languages
English (en)
French (fr)
Other versions
EP0488880B1 (de
Inventor
Raymond Beaussant
Jacques Société Matisec Frison
Robert Schegerin
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.)
Safran Aerosystems SAS
Original Assignee
Intertechnique SA
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 Intertechnique SA filed Critical Intertechnique SA
Publication of EP0488880A1 publication Critical patent/EP0488880A1/de
Application granted granted Critical
Publication of EP0488880B1 publication Critical patent/EP0488880B1/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
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/005—Active or passive body temperature control

Definitions

  • the present invention relates to personal protective equipment in a hostile atmosphere, in particular in an atmosphere containing toxic or corrosive products, comprising a diving suit provided with an autonomous supply of respiratory gas and means of ventilation of the diving suit.
  • Equipment of this type is already known having a spacesuit consisting of a flexible and waterproof garment and a helmet with transparent visor, connectable to a gas reserve constituted by a supply cylinder of compressed respiratory gas.
  • the protective equipment During interventions in such an atmosphere, the protective equipment must supply respiratory gas in quantity and appropriate quality and also ventilate the body to evacuate the heat and to avoid condensation.
  • the gas coming from the bottle feeds an ejector intended to suck in air coming from the spacesuit and to put it in circulation for ventilation.
  • the atmosphere breathed by the wearer of the suit is made up of a mixture of the supplied breathing gas and the suit's gas.
  • the supply of gas from the bottle is compensated by an exhaust through valves fitted to the spacesuit.
  • the ventilation circuit can be considered to be open, which results in wasted respiratory gas.
  • Such equipment consequently has only a reduced autonomy, owing to the fact that the volume and the weight of the compressed gas cylinders used for respiration and ventilation must remain within acceptable limits.
  • the invention aims to solve the problem of the protection of personnel having to intervene on the scene of accidents and for this to have equipment which allows physical activity, therefore a high metabolism, for a long period without dangerous increase in the content.
  • CO2 inspired gases
  • the invention proposes in particular individual protective equipment in which the reserve of respiratory gas consists of a tank of liquefied gas (liquid air, liquid oxygen or liquefied mixture containing helium and / or hydrogen in addition to oxygen and nitrogen) feeding a respiratory circuit opening into the helmet, generally through a regulating valve, which can be of conventional constitution;
  • the equipment is characterized in that the respiratory circuit is supplied by the reservoir through the primary circuit of a heat exchanger and a pneumatic motor interposed between the heat exchanger and the respiratory circuit and is coupled to a circulation fan ventilation air of the garment in a closed circuit passing through the exchanger.
  • the ventilation gas is cooled and dried before feeding the spacesuit.
  • the return of the ventilation gas to the spacesuit can be carried out by distribution pipes opening out at the ends of the members, according to an already known arrangement, for example that described in document EP-A-0 317 415.
  • the ventilation circuit can be closed or simply semi-closed, with evacuation of a gas flow, in the case of equipment intended to be used in the atmosphere.
  • the face is separated from the atmosphere around the body by a seal (facial seal or more frequently neck seal) and the helmet is provided with an exhalation valve.
  • a seal facial seal or more frequently neck seal
  • the helmet is provided with an exhalation valve.
  • only a fraction of the flow of respiratory gas coming from the primary circuit of the exchanger is sent to the pneumatic motor, the rest of the flow of gas supplying the helmet or a respiratory mask by the through an on-demand regulator.
  • an economizer bag which may have a constitution and a function similar to that of the bags provided on the emergency oxygen masks intended for passengers on commercial aircraft, may be interposed between the outlet of the pneumatic engine and the intake into helmet.
  • the invention makes it possible to use not only the breathable nature of the reserve gas but also its physical state, the liquefied gas constituting a source of frigories and the pressure of the vaporized gas. providing the energy needed for ventilation.
  • the respiratory equipment shown diagrammatically in FIG. 1 comprises a suit having a garment 10 and a helmet 12 provided with a transparent visor 14.
  • the helmet is provided with an exhalation valve 15 provided to maintain an overpressure of a few around the head. millibars compared to the ambient atmosphere.
  • a neck seal 16 which is applied against the skin separates the space surrounding the head from the space surrounding the rest of the body. This neck seal 16 can be replaced by a facial seal or an oro-nasal mask.
  • the garment is equipped with a network of pipes to organize the circulation of ventilation gas along the limbs and torso.
  • this network of pipes includes a distributor 18 between pipes 20 for supplying gas to the ends of the members, the return being effected by circulation along the members towards the space surrounding the torso.
  • the garment is equipped with a calibrated valve or more, 22 maintaining an overpressure in the spacesuit. This overpressure will often be around 2 millibars in the case of use of the spacesuit in an atmosphere under normal atmospheric pressure. It is sufficient to prevent the flooding of the suit with toxic or corrosive products from outside.
  • a reserve of respiratory gas constituted by a reservoir 24 of liquefied breathable gas.
  • This tank belongs to a converter whose general constitution is similar to that of the converters currently used in military aircraft to supply the crew with respiratory gas. It is fitted with a conventional pressure regulator, at 5 bars for example (not shown), and supplies the coil 26 constituting the primary circuit of a heat exchanger 28.
  • the output of the coil 26 feeds a rotary pneumatic motor 30, the output of which is connected to a pipe 32 which opens into the helmet 12.
  • An economizer bag 46 (in dashes in FIG. 1) can be connected to line 12.
  • the respiratory gas which reaches the helmet cannot therefore in any case mix with the gas occupying the interior of the garment.
  • the motor 30 is coupled to a fan 34 intended to take gas from the garment 10 and to circulate it in the exchanger 28, where this withdrawn gas cools and dries out.
  • the heat exchanger 28 may comprise a casing 36 for guiding the gas, provided at its base with means for discharging the condensates, which can be reduced to a tube 38 of small section.
  • the upper part of the envelope 36 can be simply opened widely above the fan 34, so as to collect gas in the garment 10.
  • the lower part of the envelope 36 feeds a sheath 40 which opens into the distributor 18.
  • the collected gas passes through the fan 34, scans the coil 26, passes through the distributor 18 and from there is sent to the ends of the members.
  • FIG. 2 shows a motor 30 constituted by a turbine whose output shaft carries a fan propeller 34.
  • the diameter of the turbine can be much smaller than that of the fan propeller, since the flow rate passing through the turbine is much lower than that which must pass through the secondary circuit of the exchanger. For example, for a flow of 8 to 15 l / min through the turbine, the flow of the fan will generally be between 150 and 200 l / min.
  • the supply pressure of the motor can be several bars while a few millibars are enough to overcome the pressure losses of the ventilation circuit.
  • the air supply to the fan can therefore take place through an annular space formed around the turbine.
  • the supply of respiratory gas to the turbine and the departure of gas can be carried out by small diameter pipes.
  • the motor 30 can have other constitutions: in particular, it can be constituted not by an expansion turbine, but by a volumetric machine, such as for example the pneumatic vane motor shown in FIG. 3.
  • the rotor 42 which carries the pallets 44 is still coupled to the fan 34.
  • the output of the coil of the exchanger 28 is connected to two circuits opening into the helmet.
  • the first circuit is similar to that which is mounted in FIG. 1, but comprises a flexible economiser bag 46, contained in the garment and having a volume of the order of a liter when it is inflated.
  • This bag 46 placed upstream of the outlet in the helmet 12 and downstream of the motor 30, adapts the continuous flow of the pneumatic motor 30 at the alternating flow of respiration, without increasing consumption.
  • the second circuit includes a demand regulator 48 having a reference pressure tap in the helmet to control the flow. It feeds a diffuser 50 for demisting the visor 14, opening into the helmet.
  • the variant embodiment shown in FIG. 5 differs from the previous one by selection means making it possible to supply the secondary circuit of the exchanger 28 either through the fan 34 (normal operation) or through a suction ejector 58 air in the garment.
  • These selection means comprise a three-way valve 60, with manual control or with automatic control in the event of a malfunction of the motor-vacuum cleaner assembly.
  • the valve 60 In a first position, the valve 60 sends a fraction of the gas leaving the primary circuit of the exchanger to the pneumatic motor 30. In its second position, it sends this fraction of the gas to the ejector 58.
  • a non-return valve 62 is interposed on the air intake to the fan.
  • Another valve 64 is interposed on the inlet to the ejector.

Landscapes

  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
EP91403195A 1990-11-27 1991-11-26 Vollschutzausrüstung Expired - Lifetime EP0488880B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9014811A FR2669541B1 (fr) 1990-11-27 1990-11-27 Equipement de protection a scaphandre.
FR9014811 1990-11-27

Publications (2)

Publication Number Publication Date
EP0488880A1 true EP0488880A1 (de) 1992-06-03
EP0488880B1 EP0488880B1 (de) 1995-10-11

Family

ID=9402639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91403195A Expired - Lifetime EP0488880B1 (de) 1990-11-27 1991-11-26 Vollschutzausrüstung

Country Status (7)

Country Link
US (1) US5339806A (de)
EP (1) EP0488880B1 (de)
JP (1) JPH07554A (de)
CA (1) CA2056211C (de)
DE (1) DE69113757T2 (de)
ES (1) ES2079050T3 (de)
FR (1) FR2669541B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994028346A1 (en) * 1993-06-01 1994-12-08 Andonian Martin D All position cryogenic liquefied-gas container
GB2281103A (en) * 1993-08-10 1995-02-22 Luo A Fa Fans driven by pneumatic motors
US5499623A (en) * 1992-02-22 1996-03-19 Dragerwerk Ag Gas mask and breathing equipment with liquefied respiration gas
WO1996032988A1 (en) * 1995-04-21 1996-10-24 Figgie International Inc. Apparatus for providing a conditioned airflow inside a microenvironment and method
CN105066504A (zh) * 2015-08-06 2015-11-18 浙江省江山市浙安消防设备有限公司 降温服制冷装置

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2699414B1 (fr) * 1992-12-22 1995-02-10 Matisec Mat Ind Securite Scaphandre de protection comportant un système respiratoire autonome intégré.
US5632043A (en) * 1995-04-13 1997-05-27 Mitsubishi Semiconductor America Inc. Hazardous material protection suit with carrying handles
US5704073A (en) 1995-08-01 1998-01-06 Figgie International Inc. Quick donning goggles for use with breathing mask
US6681589B2 (en) * 2002-02-01 2004-01-27 Honeywell International Inc. Space suit backpack using solid adsorbents for cryogenic oxygen storage, freezeout of carbon dioxide and moisture, and ice heat sink
US6823867B2 (en) 2002-04-12 2004-11-30 3M Innovative Properties Company Pouch for the blower unit of a powered air purifying respirator
US6948191B2 (en) * 2002-04-12 2005-09-27 3M Innovative Properties Company Personal protective suit with partial flow restriction
US6796304B2 (en) 2002-04-12 2004-09-28 3M Innovative Properties Company Personal containment system with sealed passthrough
US7124593B2 (en) * 2003-09-02 2006-10-24 Steve Feher Temperature conditioning apparatus for the trunk of a human body
EP1786523B1 (de) * 2004-07-23 2009-10-07 Interspiro, Inc. Vorrichtung zur bereitstellung atembarer luft und körperlichen schutzes in einer kontaminierten umgebung
US8011027B2 (en) * 2004-11-17 2011-09-06 Interspiro, Inc. Protective seal mechanism
US7937775B2 (en) 2005-08-09 2011-05-10 Microtek Medical, Inc. Surgical protective head gear assembly including high volume air delivery system
CA2677132A1 (en) * 2007-04-11 2008-10-23 John J. Davis Atraumatic introducer for nasal endotracheal tubes and its method of use
JP5198311B2 (ja) * 2008-02-18 2013-05-15 株式会社イハラ 防護装備、隔離設備およびフィルタ
CN104841069B (zh) * 2015-05-27 2018-04-06 苏州经贸职业技术学院 可降温防护服
JP7506390B2 (ja) * 2019-11-19 2024-06-26 興研株式会社 空気呼吸器および空気呼吸器とともに着用される防火服
US20230330448A1 (en) * 2020-10-19 2023-10-19 Avox Systems Inc. De-misting system for a mask and associated methods
CN112999789A (zh) * 2021-03-15 2021-06-22 恩平市超弦膜技术有限公司 应用于封闭式防护服正压呼吸***的分子膜气体净化方法
CN114084317A (zh) * 2021-11-22 2022-02-25 东台市兴盾船舶设备有限公司 一种消防潜水浮力背心

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1306894A (fr) * 1961-11-23 1962-10-19 Garrett Corp Perfectionnements aux appareils de conditionnement
FR2366028A1 (fr) * 1976-10-01 1978-04-28 Draegerwerk Ag Vetement de protection contre la chaleur et les gaz
US4181126A (en) * 1978-01-23 1980-01-01 Hendry Stephen M Cryogenic, underwater-breathing apparatus
GB2032255A (en) * 1978-10-23 1980-05-08 Draegerwerk Ag A protective suit and method of cooling a wearer of the suit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423631A (en) * 1942-01-26 1947-07-08 Univ Minnesota Conversion apparatus
US2990695A (en) * 1958-10-06 1961-07-04 Bendix Corp Thermodynamic transfer systems
US3161192A (en) * 1960-12-06 1964-12-15 Mark E Mccormack Air-conditioned protective garment and air-supply-and-conditioning apparatus for the same
US3487765A (en) * 1966-10-06 1970-01-06 United Aircraft Corp Protective garment ventilation system
US3528414A (en) * 1968-05-15 1970-09-15 Us Air Force Automatic analogue breathing system for multicell pressure suits
US3730178A (en) * 1970-03-24 1973-05-01 F Moreland Deep-sea dive suit and life support system
SU698625A1 (ru) * 1978-03-13 1979-11-25 Одесский Технологический Институт Холодильной Промышленности Автономна теплозащитна дыхательна система

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1306894A (fr) * 1961-11-23 1962-10-19 Garrett Corp Perfectionnements aux appareils de conditionnement
FR2366028A1 (fr) * 1976-10-01 1978-04-28 Draegerwerk Ag Vetement de protection contre la chaleur et les gaz
US4181126A (en) * 1978-01-23 1980-01-01 Hendry Stephen M Cryogenic, underwater-breathing apparatus
GB2032255A (en) * 1978-10-23 1980-05-08 Draegerwerk Ag A protective suit and method of cooling a wearer of the suit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED Section PQ, Week C27, 13 Août 1980 Derwent Publications Ltd., London, GB; Class P35, AN F8905 & SU-A-698 625 (ODESSA REFRIG) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5499623A (en) * 1992-02-22 1996-03-19 Dragerwerk Ag Gas mask and breathing equipment with liquefied respiration gas
WO1994028346A1 (en) * 1993-06-01 1994-12-08 Andonian Martin D All position cryogenic liquefied-gas container
GB2281103A (en) * 1993-08-10 1995-02-22 Luo A Fa Fans driven by pneumatic motors
WO1996032988A1 (en) * 1995-04-21 1996-10-24 Figgie International Inc. Apparatus for providing a conditioned airflow inside a microenvironment and method
CN105066504A (zh) * 2015-08-06 2015-11-18 浙江省江山市浙安消防设备有限公司 降温服制冷装置

Also Published As

Publication number Publication date
DE69113757T2 (de) 1996-03-14
JPH07554A (ja) 1995-01-06
CA2056211A1 (fr) 1992-05-28
DE69113757D1 (de) 1995-11-16
FR2669541B1 (fr) 1993-02-19
US5339806A (en) 1994-08-23
FR2669541A1 (fr) 1992-05-29
EP0488880B1 (de) 1995-10-11
ES2079050T3 (es) 1996-01-01
CA2056211C (fr) 1998-09-29

Similar Documents

Publication Publication Date Title
EP0488880B1 (de) Vollschutzausrüstung
EP0513312A1 (de) Persönlicher schutzausrüstung mit anzug und selbständiger nahrung
EP0153247B1 (de) Ausrüstung zum Schutz von Personen gegen Verseuchung
FR2673380A1 (fr) Equipement respiratoire individuel de protection.
EP1275415B1 (de) Beatmungsgerät und seine Benutzung in einer Schutzanlage gegen Hypoxie
EP1786523B1 (de) Vorrichtung zur bereitstellung atembarer luft und körperlichen schutzes in einer kontaminierten umgebung
US20080245370A1 (en) Oxygen mask with rebreather bag for use with pulse oxygen delivery system
FR2460686A1 (fr) Dispositif d'alimentation en gaz pour appareil respiratoire
US5040528A (en) Autonomous breathing system for underwater diver's headgear
EP0885632B1 (de) In feindlich gesinnter Umgebung verwendbare Schutzvorrichtung gegen Hypoxie
CA2468813C (fr) Procede et dispositif de protection des passagers d'un aeronef contre l'hypoxie
EP1275416B1 (de) Beatmungsgerät mit Durchflussbegrenzer
FR2806635A1 (fr) Dispositif de protection individuelle, notamment contre les agressions nbc
FR2639545A1 (fr) Equipement individuel respiratoire et de protection en ambiance contaminee
WO2018064286A1 (en) Rebreather apparatus
EP2925414B1 (de) Einatmungskanal mit verbessertem schutz für eine beatmungsvorrichtung
FR2614207A2 (fr) Masque respiratoire de protection, notamment pour les passagers d'aeronefs.
FR2793147A1 (fr) Dispositif pour proteger un sujet evoluant en milieu pollue
FR2646781A1 (fr) Dispositif et ensemble respiratoires, notamment pour ambiance irrespirable, en particulier pour milieu contamine
US20200147417A1 (en) Device For Supplying Breathing Gas To A User
FR2693117A1 (fr) Appareil respiratoire pour faire respirer un sujet en milieu aérien pollué, notamment pour un usage au feu.
WO2024150224A1 (en) Quick release for closed-circuit rebreather
CA2374718A1 (fr) Dispositif de protection individuelle, notamment contre les agressions nbc
GB2064335A (en) Breathing apparatus
FR2623164A1 (fr) Equipement individuel de protection pour vehicule spatial

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES GB

17P Request for examination filed

Effective date: 19921008

17Q First examination report despatched

Effective date: 19940509

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES GB

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

Effective date: 19951010

REF Corresponds to:

Ref document number: 69113757

Country of ref document: DE

Date of ref document: 19951116

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2079050

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: GB

Payment date: 20001020

Year of fee payment: 10

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

Ref country code: ES

Payment date: 20001030

Year of fee payment: 10

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

Ref country code: DE

Payment date: 20001031

Year of fee payment: 10

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: 20011126

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

Ref country code: ES

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

Effective date: 20011127

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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: 20020702

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

Effective date: 20011126

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20021213