EP2829304B1 - Schutzanzug mit luftzufuhr und abnehmbarem atemfilter - Google Patents

Schutzanzug mit luftzufuhr und abnehmbarem atemfilter Download PDF

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Publication number
EP2829304B1
EP2829304B1 EP13178097.5A EP13178097A EP2829304B1 EP 2829304 B1 EP2829304 B1 EP 2829304B1 EP 13178097 A EP13178097 A EP 13178097A EP 2829304 B1 EP2829304 B1 EP 2829304B1
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EP
European Patent Office
Prior art keywords
filter
protective suit
breathing
air
exterior
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.)
Active
Application number
EP13178097.5A
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English (en)
French (fr)
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EP2829304A1 (de
Inventor
Swan Tuffery
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.)
Honeywell International Inc
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Honeywell International Inc
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Publication date
Application filed by Honeywell International Inc filed Critical Honeywell International Inc
Priority to EP13178097.5A priority Critical patent/EP2829304B1/de
Publication of EP2829304A1 publication Critical patent/EP2829304A1/de
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Publication of EP2829304B1 publication Critical patent/EP2829304B1/de
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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
    • A62B17/006—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes against contamination from chemicals, toxic or hostile environments; ABC suits
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/10—Respiratory apparatus with filter elements

Definitions

  • Various embodiments relate generally to personal respiratory protection systems, such as systems used in, for example, contaminated environments.
  • Air-fed protective suits are widely used in the various industries.
  • air fed protective suits may be used to permit employees to work in tritium contaminated atmospheres.
  • the pharmaceutical industry may have work areas that may be contaminated with biological hazards.
  • Chemical companies may have manufacturing facilities that may present chemical vapor dangers to its employees. Also many industrial settings may result in the production of particle contamination. Both employee and employer have cause for concern for the safety of employees working in atmospheres that present dangerous hazards to the workers.
  • Apparatus and associated methods relate to an air-fed protective suit having a breathing filter detachably coupled to the suit.
  • the air-fed suit may have an interior tear strip to provide for filter seal and/or for removal from the air-fed protective suit.
  • the air-fed suit may include a sealed flap which the user can open to expose the filter to the atmosphere exterior to the suit.
  • Some embodiments may provide a user accessible mouthpiece connected to the filter via a breathing tube permitting the user to breathe the exterior atmosphere through the filter.
  • the filter may perform tritium filtration of exterior atmospheric gases inhaled therethrough, for example.
  • a user When exiting a contaminated area, for example, a user may first enter an airlock, detach the filter, remove the suit and then exit the airlock while continuing to breathe through the detached filter.
  • Various embodiments may achieve one or more advantages. For example, some embodiments may permit the user to breath through the filter should the air-fed suit lose its air-feed. If, for example an air-feed compressor loses power, the user may be in urgent need of an alternative source of oxygen. Breathing the unfiltered air exterior to the suit may present grave dangers to the suit wearer. But the use of an appropriate filter for a particular atmospheric danger may permit the user to breath the exterior atmosphere through the filter, even if but for a short time of exiting a contaminated area.
  • Some embodiments may provide an emergency back-up source of air for tritium contaminated atmospheres. Such atmospheres may be present in some nuclear facilities. Various embodiments may permit a person to breath through the filter while changing out of the air-fed suit. Some facilities with contaminated atmospheres may provide an airlock for such donning and/or doffing of protective suits. Some airlock chambers may have residual contamination therein. Some embodiments may permit a protective suit wearer to doff his/her suit while breathing through a filter appropriate for the contamination risk. After doffing an exemplary protective suit, the wearer may continue using the detached filter for breathing while exiting the airlock chamber.
  • FIG. 1 depicts an exemplary doffing of an air-fed protective suit while using and detaching an exemplary breathing filter.
  • a contaminated-air facility 100 is depicted in this figure.
  • the airlock chamber 110 may permit a worker to put on an air-fed protective suit 120 before entering the contaminated-air area 105.
  • the airlock chamber 110 may also permit a worker to take off an air-fed protective suit 120 after exiting the contaminated-air area 105.
  • the level of air-contamination in the air-lock chamber 110 may be significantly lower than the level of air-contamination in the contaminated-air area 105.
  • a worker 125 is shown in the airlock chamber 110 removing his air-fed protective suit 120.
  • the worker 125 may remove the air-fed protective suit 120 and detach a protective breathing filter 130 so that he may continue to breathe using a protective breathing filter 130. Even after removing his air-fed protective suit 120, he may use the protective breathing filter 130.
  • a second worker 135 entering the clear-air area 115. This second worker 135 is still breathing through a protective breathing filter 130 after exiting from the airlock chamber 110. Now in the clean-air area of the facility, the wearer may now safely remove the protective breathing filter 130.
  • FIG. 2 depicts an exemplary embodiment of a protective suit with a detachable breathing filter being worn by a person.
  • an exemplary protective suit 200 with a detachable breathing filter 205 is shown being worn by a wearer 210.
  • the interior side of the detachable filter 205 is shown connected to a breathing tube 215.
  • the breathing tube 215 in turn is shown connected to a mouthpiece 220.
  • a head region 225 of the protective suit 200 is depicted to be transparent so that the user may be able to see outside of the protective suit 200.
  • the main air supply for the protective suit 200 is shown by an air line 230 which may supply a source of breathable air to the wearer 210
  • FIG. 3 depicts an exemplary openable flap exposing a filter which is attached to an air-fed protective suit.
  • an exemplary air-fed protective suit 300 is depicted.
  • the air-fed protective suit 300 has an exemplary breathing filter 305 in a chest area 310 of the air-fed protective suit 300.
  • a covering 310 has been peeled back to expose a front face 315 of the breathing filter 305.
  • the covering 310 had a welded seem 320 attaching the covering 310 to the air-fed protective suit 300.
  • the covering 310 together with the intact weld and a skin 325 of the air-fed protective suit 300 provided a substantially air-imperious covering of the breathing filter 305.
  • a tearable weld 330 for removing the breathing filter 305 from the air-fed protective suit 300.
  • the tearable weld 330 may be torn from the outside of the air-fed protective suit 300.
  • the tearable weld 330 may be torn from the inside of the air-fed protective suit 300.
  • the tearable weld 330 may be torn from either side of the air-fed protective suit 300.
  • FIG. 4 depicts the inside of an exemplary air-fed protective suit showing a mouthpiece, a breathing tube, and a breathing filter.
  • an exemplary air-fed protective suit 400 is depicted from a perspective view showing an inside 405.
  • a chest area 410 is shown wherein an air tube 410 attaches to a breathing filter 415.
  • the air tube 410 fluidly connects a mouthpiece 420 to the breathing filter 415.
  • a tearable weld 425 is shown in this figure. The tearable weld 425 may be torn to release the breathing filter 415 from the air-fed protective suit 400.
  • FIGs. 5A-5B depict close-up views of an exemplary openable flap covering and exposing a breathing filter.
  • an exemplary openable flap covering 500 is depicted.
  • the openable flap covering 500 is covering an air filter 505.
  • the openable flap covering 500 has a welding 510 attaching the openable flap covering 500 to a shell 515 of a protective suit.
  • the welding 510 may provide a sealed covering of the air filter 505.
  • the openable flap covering 500 has been torn, exposing the air filter 505.
  • the shell 515 has a circular hole 518 inside of the welding 510. This circular hole exposes the air filter 505 to an external atmosphere.
  • a second welding 520 attaches the openable flap covering 500 to the shell 515 of the protective suit.
  • This second welding 520 may prevent the openable flap covering 500 from becoming a foreign body discarded in an air-contaminated area.
  • This second welding is described in the EP 2583721 published application, for example, at least with reference to figures 3A-3B of that published application.
  • the welded openable flap covering may prevent the filter from exposure to contaminated air before one intends to use it. In this way, the capacity of the air filter to remove undesirable air contaminants may remain substantially effective until the air filter is needed to be used.
  • FIG. 6 depicts a schematic diagram of an exemplary mouthpiece, an exemplary breathing tube, and an exemplary filter.
  • an exemplary breathing system 600 for contaminated air is depicted attached to an exemplary protective suit 605.
  • An exterior atmosphere 610 may be contaminated.
  • an interior atmosphere 615 may be supplied by an air tube carrying clean breathable air.
  • the wearer may be able to use a filter 620 to substantially decontaminate the contaminated air of the exterior atmosphere 610.
  • the wearer would be in urgent need of a secondary source of breathable air.
  • the wearer may first grab a mouthpiece 625 with his/her mouth by moving his head to the nearby located mouthpiece within the head area of the suit, for example.
  • the wearer may then tear a tearable filter covering 630 with his/her hand, for example.
  • the wearer may then begin breathing through the filter 620 simply by inhaling and exhaling through the mouthpiece 625.
  • the mouthpiece in this exemplary embodiment contains a valve 635 which directs the inhaled air through the filter as indicated by the arrows with the diagonal hash marks 640.
  • the valve 635 directs the exhaled air into the interior atmosphere 615 of the protective suit 605, as indicated by the arrows with checkerboard hash marks 645.
  • the exhaled air into the interior atmosphere 615 may help the protective suit 605 maintain a positive air pressure with respect to the exterior atmosphere 610. If, for example, the air supply line becomes kinked, the suit may otherwise lose the positive pressure of the interior atmosphere 615.
  • FIG. 7 depicts a schematic diagram of an exemplary removable breathing filter showing a tearable strip and openable flap.
  • a protective suit skin 705 is connected to a filter assembly 710 via a filter removal device 715.
  • the filter removal device may be a tearable strip, for example.
  • the filter removal device may be a line of preferential weakness in the protective suit skin 705, which may permit the user to detach a filter 715 by tearing the protective suit skin 705 along the line of preferential weakness.
  • An openable seal 720 is shown covering a breathing filter 725.
  • the openable seal 720 may be a flap which may be torn to expose a front face 730 of the breathing filter 725.
  • the openable seal may be attached to the protective suit skin 705. In some embodiments, the openable seal may be attached to the filter assembly 710. In some embodiments, the removal of the openable seal 720 may permit a wearer to breath through the breathing filter 725. In some embodiments, the removal of the openable seal 720 may expose the breathing filter 725 to an exterior atmosphere 735.
  • FIG. 8 depicts a schematic diagram of an exemplary tritium filter and corresponding openable flaps interior and exterior to a protective suit.
  • a breathing tube 800 is shown connected to a mouthpiece 805 but disconnected from a tritium filter 810.
  • the tritium filter 810 may require moisture for preservation, for example.
  • a protective suit 815 may have two filter covers, one an exterior filter cover 820 and one an interior filter cover 825.
  • a wearer may remove the interior filter cover 825, for example, when he/she first puts on the protective suit 815. After the interior filter cover is removed, an interior surface 850 may be exposed to an atmosphere interior to the protective suit.
  • the filter has an inner connector 840 for connection to the breathing tube 800. Then, if the wearer encounters a need to use a tritium filter 810, he/she may remove the exterior filter cover 820, exposing an exterior surface 845 to an atmosphere exterior to the protective suit. The removal of the exterior filter cover 820 may also permit the flow of an exterior atmosphere 835 through the tritium filter 810. The user may then secure a mouthpiece with his/her mouth and breathe through the mouthpiece 805.
  • some embodiments may use a P3 type of filter.
  • pancake type filters may be used for the purpose of filtering the contaminated atmospheric air.
  • tritium filters may be used.
  • Some exemplary filters may require storage within a substantially air-tight environment until time of use. The use of such filters may require a tearable interior filter cover to be removed when a wearer dons a protective suit so equipped. An air tube may then be coupled to the filter after such a removal of the interior filter cover.
  • a breathing filter may be located in the chest area of an exemplary air-fed protective suit.
  • a breathing filter may be located in the mask region of a protective suit.
  • a filter may be located in a neck region of a protective suit.
  • apparatus and methods may involve a protective suit that has a source of breathable air attached to the suit or the wearer of the suit.
  • a suit may encapsulate a user with a bottle of compressed air attached to the user's body, for example.
  • a protective suit may be connected to a tank of compressed air via an air line.
  • Various embodiments may include an encapsulated protective suit including a skin configured to substantially isolate a wearer from an exterior atmosphere. All embodiments include an air-connection port configured to attach to a source of breathable air.
  • An exemplary embodiment may include a breathing filter detachably coupled to the skin, the breathing filter having an exterior side and an interior side.
  • Some exemplary configurations my include a tearable filter-release strip, wherein before the filter-release strip is torn, the breathing filter is coupled to the skin, and after the filter-release strip is torn, the breathing filter is detached from the skin.
  • Some embodiments include a tearable exterior filter cover, wherein before the exterior filter cover is torn, the exterior side of the filter is covered by the filter cover, and after the exterior filter cover is torn, the exterior side of the filter is exposed to the exterior atmosphere.
  • the embodiments include a mouthpiece accessible to the wearer from within the encapsulated protective suit.
  • the protective suit includes a breathing tube having a first port connected to the mouthpiece, and a second port configured to connect to the interior side of the breathing filter.
  • the embodiments include a protective suit including a substantially air-impervious shell.
  • An air-connection port is configured to attach to a source of breathable air.
  • the embodiments include a filter having an inner connector and an outer face, the filter having an attached mode and a detached mode, wherein when the filter is in the attached mode, the filter is attached to the substantially air-impervious shell, and when the filter is in the detached mode, the filter is detached from the substantially air-impervious shell.
  • a breathing tube has a first port connectable to a mouthpiece and in fluid communication with a second port configured to connect to the inner connector of the filter.
  • the protective suit includes a substantially air-impervious shell.
  • the substantially air-impervious suit includes an air-connection port configured to attach to a source of breathable air. It includes a detachable filter coupled to the substantially air-impervious shell, the filter having an inner connector and an outer face.
  • a breathing tube having a first port connectable to a mouthpiece and in fluid communication with a second port configured to connect to the inner connector of the is included in all embodiments.
  • the filter may be toollessly detached from the substantially air-impervious shell without interruption of user respiration via the filter.
  • Such means of toollessly detachment may include the use of a tearable weld, for example.
  • Some embodiments may include a rigid structure underlying a substantially air-impervious membrane. And when the user wishes to detach the filter, he may pull the string which may simultaneously remove the air-impervious membrane.
  • the flexible shell of the protective suit may be scored such that the flexible shell may preferentially tear along the scoring.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Toxicology (AREA)
  • Pulmonology (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Claims (15)

  1. Schutzanzug (120, 200, 300, 400), umfassend:
    eine im Wesentlichen luftundurchlässige Hülle (515) ;
    eine Luft-Anschlussöffnung, die zur Befestigung an einer Atemluftquelle ausgelegt ist;
    einen Filter (205, 305, 415) mit einem Innenverbinder und einer Außenseite, wobei der Filter einen befestigten Modus und einen gelösten Modus aufweist, wobei der Filter (205, 305, 415) im befestigten Modus des Filters (205, 305, 415) an der im Wesentlichen luftundurchlässigen Hülle (515) befestigt ist, und der Filter im gelösten Modus des Filters von der im Wesentlichen luftundurchlässigen Hülle (515) gelöst ist; und
    einen Atemschlauch (215) mit einer ersten Anschlussöffnung, die mit einem Mundstück (220) verbindbar ist, und in Fluidverbindung mit einer zweiten Anschlussöffnung, die zur Verbindung mit dem Innenverbinder des Filters ausgelegt ist.
  2. Schutzanzug nach Anspruch 1, ferner umfassend eine Außenklappe (500) mit einem verschlossenen Modus und einem geöffneten Modus, wobei der verschlossene Modus eine luftdichte Abdichtung bereitstellt, die die Außenseite des Atemfilters (205, 305, 415) abdeckt, wobei der geöffnete Modus die Außenseite des Atemfilters einer Atmosphäre außerhalb des Schutzanzuges aussetzt.
  3. Schutzanzug nach Anspruch 1, ferner umfassend ein Entfernungsglied, das, wenn es entfernt ist, den Filter (205, 305, 415) in den gelösten Modus setzt, und wenn es nicht entfernt ist, den Filter (205, 305, 415) im befestigten Modus lässt.
  4. Schutzanzug nach Anspruch 1, wobei der Atemfilter (205, 305, 415) einen Tritium-Filter umfasst.
  5. Schutzanzug nach Anspruch 2, wobei die Außenklappe im geöffneten Modus der Außenklappe (500) an der im Wesentlichen luftundurchlässigen Hülle (515) oder an dem Filter befestigt bleibt.
  6. Verkapselter Schutzanzug nach Anspruch 1, ferner umfassend:
    die im Wesentlichen luftundurchlässige Hülle, die eine Außenhaut (705) ist, die dazu ausgelegt ist, einen Träger im Wesentlichen von einer Außenatmosphäre zu isolieren;
    den Filter (205, 305, 415), der ein Atemfilter ist, der lösbar an der Außenhaut angeschlossen ist, wobei der Atemfilter (205, 305, 415) eine Außenseite und eine Innenseite aufweist;
    einen zerreißbaren Filterfreisetzungsstreifen (715), wobei der Atemfilter (205, 305, 415) vor dem Zerreißen des Filterfreisetzungsstreifens (715) mit der Außenhaut (705) verbunden ist, und der Atemfilter (205, 305, 415) nach dem Zerreißen des Filterfreisetzungsstreifens von der Außenhaut (705) gelöst wird;
    eine zerreißbare äußere Filterabdeckung, wobei die Außenseite des Filters vor dem Zerreißen des Außenfilters von der äußeren Filterabdeckung (310) abgedeckt wird, und die Außenseite des Filters (205, 305, 415) nach dem Zerreißen der äußeren Filterabdeckung (310) der Außenatmosphäre ausgesetzt wird;
    wobei das Mundstück (220, 420) für den Träger von innerhalb des verkapselten Schutzanzugs zugänglich ist; und
    der Atemschlauch (215, 410) mit dem Mundstück (220, 420) verbunden ist, und die zweite Anschlussöffnung zur Verbindung mit dem Innenverbinder der Innenseite des Atemfilters (205, 305, 415) ausgelegt ist.
  7. Verkapselter Schutzanzug nach Anspruch 6, ferner umfassend eine zerreißbare innere Filterabdeckung, wobei die Innenseite des Filters vor dem Zerreißen der inneren Filterabdeckung von der inneren Filterabdeckung abgedeckt wird, und die Innenseite des Filters (205, 305, 415) nach dem Zerreißen der inneren Filterabdeckung einer Innenatmosphäre ausgesetzt wird.
  8. Verkapselter Schutzanzug nach Anspruch 6, wobei der Atemfilter (205, 305, 415) einen Tritium-Filter umfasst.
  9. Verkapselter Schutzanzug nach Anspruch 6, wobei der Atemfilter (205, 305, 415) einen P3-Filter umfasst.
  10. Verkapselter Schutzanzug nach Anspruch 6, wobei der Atemfilter (205, 305, 415) ein Flachfilter (Pancake-Filter) ist.
  11. Verkapselter Schutzanzug nach Anspruch 6, ferner umfassend ein Ventil, das eine Ausatmung des Trägers zum Innenraum des verkapselten Schutzanzugs leitet und eine Einatmung vom Atemschlauch leitet.
  12. Verkapselter Schutzanzug nach Anspruch 6, wobei nach dem Zerreißen der zerreißbaren äußeren Filteranordnung diese teilweise entweder an der Außenhaut oder am Atemfilter (205, 305, 415) befestigt bleibt.
  13. Verkapselter Schutzanzug nach Anspruch 6, wobei der verkapselte Schutzanzug ein Anzug für den einmaligen Gebrauch ist.
  14. Verkapselter Schutzanzug nach Anspruch 7, wobei der Filter mit Feuchtigkeit beladen ist, wenn sowohl die äußere Filterabdeckung nicht zerrissen ist als auch die innere Filterabdeckung nicht zerrissen ist.
  15. Verkapselter Schutzanzug nach Anspruch 7, wobei nach dem Zerreißen der zerreißbaren inneren Filterabdeckung diese teilweise entweder an der Außenhaut oder am Atemfilter befestigt bleibt.
EP13178097.5A 2013-07-25 2013-07-25 Schutzanzug mit luftzufuhr und abnehmbarem atemfilter Active EP2829304B1 (de)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180126991A (ko) * 2017-05-19 2018-11-28 엔알텍주식회사 방연마스크

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Publication number Priority date Publication date Assignee Title
US10004925B2 (en) 2011-10-21 2018-06-26 Honeywell International Inc. Emergency filter system for encapsulated suit
US11027156B2 (en) 2011-10-21 2021-06-08 Honeywell International Inc. Emergency filter system for ventilated hood
WO2017074329A1 (en) * 2015-10-28 2017-05-04 Honeywell International Inc. Mask with oral intake worn with protective suit or hood
DE102017010737A1 (de) * 2017-11-21 2019-05-23 Flecotec Ag Verfahren zum umweltdichten Verbinden einer Schutzhülle mit einer Sicherheitshülle

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Publication number Priority date Publication date Assignee Title
US4502157A (en) * 1981-01-21 1985-03-05 Wong Technology, Inc. Protective enclosures having self-contained air supply
FR2941624B1 (fr) * 2009-02-05 2012-05-18 Materiels Ind De Securite Dispositif de protection d'une personne et ensemble de protection correspondant.
US10004925B2 (en) 2011-10-21 2018-06-26 Honeywell International Inc. Emergency filter system for encapsulated suit

Non-Patent Citations (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180126991A (ko) * 2017-05-19 2018-11-28 엔알텍주식회사 방연마스크

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