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WO1992004835A1 - Vetements protecteurs ameliores - Google Patents

Vetements protecteurs ameliores Download PDF

Info

Publication number
WO1992004835A1
WO1992004835A1 PCT/GB1991/001702 GB9101702W WO9204835A1 WO 1992004835 A1 WO1992004835 A1 WO 1992004835A1 GB 9101702 W GB9101702 W GB 9101702W WO 9204835 A1 WO9204835 A1 WO 9204835A1
Authority
WO
WIPO (PCT)
Prior art keywords
suit
air
protective garment
microclimate
wearer
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.)
Ceased
Application number
PCT/GB1991/001702
Other languages
English (en)
Inventor
Robin Middlemass Howie
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.)
INSTITUTE OF OCCUPATIONAL MEDICINE Ltd
Original Assignee
INSTITUTE OF OCCUPATIONAL MEDICINE Ltd
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 INSTITUTE OF OCCUPATIONAL MEDICINE Ltd filed Critical INSTITUTE OF OCCUPATIONAL MEDICINE Ltd
Publication of WO1992004835A1 publication Critical patent/WO1992004835A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/002—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
    • A41D13/0025—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment by means of forced air circulation
    • 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

Definitions

  • This invention concerns improvements in or relating to protective garments of the kind employed in contaminated environments.
  • Protective garments are widely used to prevent the interchange of contamination between the wearer's body and the environment.
  • the performance of protective garments is limited by such mechanisms as contaminant penetration of the garment's fabric, seams, fasteners or of the seals between the garment and the body.
  • the control of such penetration is limited to the body's critical requirement to lose the heat generated by metabolic process and this requirement increases with the work rate of the wearer.
  • a minor restriction in the heat loss ability can cause discomfort and a possible reduction in the wearer's mental and physical efficiency.
  • a major restriction can result in excessive sweating, coma or death.
  • sweat evaporation the major mechanism by which the body loses heat, largely ceases, and heat storage by the body begins. It is generally accepted that deleterious health effects can occur when the body temperature increases by more than about 1° C.
  • the period of actual exposure to the substances hazardous to health may be substantially shorter than the total period during which the garment is worn.
  • protective garments may require to be worn for many days while threatened by the use of chemical weapons. During such periods, it is clearly essential that the protected personnel are able to function efficiently without undue risk to health as a result of wearing protective garments.
  • An object of the present invention is to provide an improved protective garment having the capacity to extend the applicability of that described in British Patent Application No 2 219 486A and in so doing to offer a means of further reducing the possibility of the body storing heat and thereby effecting an improvement in the wearability of protective garments.
  • the airpath selector comprises a multi-way valve actuable in one mode to permit air flow into the suit via the inlet for circulation within the microclimate in an open circuit and subsequent exhaust through the outlet from the suit.
  • the filter when provided, filters air entering the microclimate.
  • the filter may be of a type for removing particulates and/or noxious gases or vapours.
  • the multi-way valve in another mode is actuable to isolate the suit from the surrounding environment, thereby causing air flow within the microclimate alone through the water vapour absorbent/adsorbent element in a closed circuit.
  • the air path selector may be actuable manually in response to a change in the environment or may be actuable automatically in response to such a change.
  • a detector may be provided externally of the garment and capable of transmitting a control signal to the selector to change its mode.
  • the outlet from the suit may itself be provided with a non-return valve and/or an outlet filter and optionally may be closed by the multi-way valve when operating in the closed circuit mode.
  • ducts may be provided for delivering dried or filtered air from the air mover to the most appropriate regions within the microclimate of the suit, and for removing humid air from the regions.
  • Figure 1 is a digrammatic representation of the protective garment; and Figure 2 is a diagrammatic representation of a detail shown in Figure 1.
  • the unit 8 also includes an air path selector in the form of a multi-way valve 20 which is operational in at least two modes as described in the following text.
  • the valve 20 is either manually actuable or automatically actuable in response to a signal from a detector (not shown) which is capable of monitoring the atmosphere for noxious or chemically injurious, or fatal, substances.
  • the suit 2 is worn as a garment for the protection of an individual working or serving in an atmospherically hostile and potentially injurious or even fatal environment.
  • the environment might prove to be intermittently hostile rather than continuously so and accordingly the garment of the present invention has been conceived with a view to providing the individual wearer with two operational modes. If, for example, the garment is worn with the expectation that at any time the environment could become hostile, the individual wearer will wish to remain in the garment in as safe and as comfortable a manner as possible.
  • valve 20 is actuated such that upon operation of the fan 10, air is induced into the suit 2 through the inlet 6 and the filter 16, the air thence passing through the ducts 18 to the parts of the body where sweat generation is potentially the greatest, for example the axillary regions among others.
  • the air thus flows through the microclimate and becomes humid, the water vapour-laden air exhausting through the outlet 7. In this mode the air by-passes the canister 12.
  • valve 20 is actuated to assume its alternative mode in which the air inlet 6 and the air outlet 7 are closed, and the air path within the microclimate is constrained through the canister 12, the air being conditioned by the absorbent/adsorbent material and recirculated by the fan 10 through the ducts 18 in the manner described above, the ducts delivering conditioned air to and withdrawing hot humid air from the regions of high water vapour generation.
  • the valve 20 closes the outlet 7 to prevent loss of gases from the microclimate when operating in the closed circuit mode since if this closure were not effected a negative pressure could obtain within the suit with adverse results.
  • the advantage of the present invention resides in its operational versatility in providing the wearer of the garment two options.
  • the one involves simple air irrigation of the suit from an innocuous external environment through a filter to the microclimate for circulation therewithin and exhaust to the environment.
  • the other provides for circulation and recirculation of air within the microclimate, the air being passed through a water vapour absorbent/adsorbent, when a hostile environment prevails without the garment.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Textile Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

Vêtement protecteur comprenant une combinaison (2) servant à renfermer pratiquement la totalité du corps d'un individu et possédant un dipositif de conditionnement d'air (8) comportant un ventilateur (10), un bloc d'alimentation (14) et un élément absorbant/adsorbant la vapeur d'eau sous forme d'une boîte métallique (12) et éventuellement, un filtre (16). Un sélecteur de circulation d'air comporte une soupape multidirectionnelle (20) et permet à l'utilisateur de modifier la circulation d'air à l'intérieur du microclimat créé dans la combinaison. D'après l'un des modes de fonctionnement, la circulation d'air suit un circuit ouvert s'effectuant de l'environnement extérieur à travers le filtre, circulant à l'intérieur du microclimat et s'évacuant vers l'environnement extérieur. D'après un autre mode de fonctionnement, le microclimat est isolé de l'environnement extérieur et la circulation d'air s'effectue en circuit fermé, l'air passant à travers la boîte métallique.
PCT/GB1991/001702 1990-09-25 1991-09-25 Vetements protecteurs ameliores Ceased WO1992004835A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9020879A GB2248173A (en) 1990-09-25 1990-09-25 Improvements in or relating to protective garments
GB9020879.4 1990-09-25

Publications (1)

Publication Number Publication Date
WO1992004835A1 true WO1992004835A1 (fr) 1992-04-02

Family

ID=10682734

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001702 Ceased WO1992004835A1 (fr) 1990-09-25 1991-09-25 Vetements protecteurs ameliores

Country Status (3)

Country Link
GB (1) GB2248173A (fr)
WO (1) WO1992004835A1 (fr)
ZA (1) ZA917662B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6796304B2 (en) 2002-04-12 2004-09-28 3M Innovative Properties Company Personal containment system with sealed passthrough
US6948191B2 (en) 2002-04-12 2005-09-27 3M Innovative Properties Company Personal protective suit with partial flow restriction
FR3062573A1 (fr) * 2017-02-08 2018-08-10 Materiels Ind De Securite Circuit de diffusion d’un premier flux et d’un deuxieme flux dans une combinaison de protection

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6751807B2 (en) * 2002-03-26 2004-06-22 Depuy Orthopaedics, Inc. Piezo fan for ventilated garment
HK1062767A2 (en) 2003-08-26 2004-10-29 颖晖实业有限公司 Isolation suit with two-way air supply/disinfection pump
CN102166045B (zh) * 2011-03-15 2014-01-29 中国人民解放军军事医学科学院卫生装备研究所 具有监控系统的全身式正压生物防护服
CN210644878U (zh) * 2020-03-19 2020-06-02 深圳北极之光科技有限公司 一种主动净化防护服

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB983423A (en) * 1960-04-27 1965-02-17 Paul Webb M D Personnel isolation and protection system
DE2743535A1 (de) * 1977-09-28 1979-04-05 Kern & Grosskinsky Gasdichter schutzanzug
US4847914A (en) * 1987-05-14 1989-07-18 Redi-Corp Protective Materials, Inc. Garment for protecting against environmental contamination
GB2219486A (en) * 1988-06-09 1989-12-13 Coal Ind Improvements in or relating to protective garments

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525334A (en) * 1966-04-07 1970-08-25 Richard J Braman Garment assembly
GB8333836D0 (en) * 1983-12-20 1984-02-01 Howorth Air Eng Ltd Body exhaust gown
DE3610491A1 (de) * 1986-03-27 1987-10-01 Draegerwerk Ag Schutzanzug mit atemluftversorgung
JPS63108140A (ja) * 1986-10-27 1988-05-13 Shimizu Constr Co Ltd 空気吸引式内衣
DE58906330D1 (de) * 1988-03-09 1994-01-20 Blaschke Pumpen Filteranlagen Einrichtung zur Belüftung von Schutzanzügen.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB983423A (en) * 1960-04-27 1965-02-17 Paul Webb M D Personnel isolation and protection system
DE2743535A1 (de) * 1977-09-28 1979-04-05 Kern & Grosskinsky Gasdichter schutzanzug
US4847914A (en) * 1987-05-14 1989-07-18 Redi-Corp Protective Materials, Inc. Garment for protecting against environmental contamination
GB2219486A (en) * 1988-06-09 1989-12-13 Coal Ind Improvements in or relating to protective garments

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6796304B2 (en) 2002-04-12 2004-09-28 3M Innovative Properties Company Personal containment system with sealed passthrough
US6948191B2 (en) 2002-04-12 2005-09-27 3M Innovative Properties Company Personal protective suit with partial flow restriction
FR3062573A1 (fr) * 2017-02-08 2018-08-10 Materiels Ind De Securite Circuit de diffusion d’un premier flux et d’un deuxieme flux dans une combinaison de protection

Also Published As

Publication number Publication date
ZA917662B (en) 1992-05-27
GB9020879D0 (en) 1990-11-07
GB2248173A (en) 1992-04-01

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