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WO1992005716A1 - Ameliorations concernant les vetements de protection - Google Patents

Ameliorations concernant les vetements de protection Download PDF

Info

Publication number
WO1992005716A1
WO1992005716A1 PCT/GB1991/001649 GB9101649W WO9205716A1 WO 1992005716 A1 WO1992005716 A1 WO 1992005716A1 GB 9101649 W GB9101649 W GB 9101649W WO 9205716 A1 WO9205716 A1 WO 9205716A1
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/GB1991/001649
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 WO1992005716A1 publication Critical patent/WO1992005716A1/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
    • 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
    • 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.
  • An earlier Patent Application No 2 219 486A describes a means of reducing the thermal stress generated by wearing a protective garment by recirculating hot humid gases from the microclimate between the garment and the wearer's body through a water vapour absorbent/adsorbent thereby reducing the relative humidity in the microclimate and thus permitting further evaporation of sweat.
  • it is not always necessary to recirculate the gases within the microclimate for example where for the sake of coolness and cleanliness of the microclimate, air is merely needed as a coolant fluid and a carrier for the vapour generated by the wearer.
  • An object of the present invention is to provide an improved protective garment.
  • a protective garment for use in a contaminated environment including a suit for encapsulating substantially the whole of a wearer's body and thereby defining a microclimate therewithin around the wearer's body, an air inlet to the suit, an air outlet from the suit, a conditioning unit mounted on or in the suit, the unit including an air mover and a power pack for the air mover, and a filter associated with the inlet to the suit.
  • the conditioning unit is self-contained, is preferably body-mounted and incorporates the air mover.
  • the filter is advantageously of a type for removing particulates and/or noxious gases or vapours.
  • the filter can be selected accordingly and the garment can thus be customised for a particular environment.
  • the outlet from the suit may itself be provided with a non-return valve and/or an outlet filter.
  • 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.
  • FIG. 1 is a digrammatic representation of the protective garment; and Figure 2 is a diagrammatic representation of a detail shown in Figure 1.
  • a protective garment for use in a hazardous environment is shown generally at 2 and comprises a one- piece suit or a multi-piece suit (not shown) which encapsulates most of the wearer's body 4 as illustrated, with appropriate sealing provided as required such as at the ends of the limbs, and, in suits not fitted with head covers, at the neck, a microclimate thereby being defined between the wearer's body and the enclosing suit.
  • the suit has an air inlet 6 and an air outlet 7.
  • a self-contained unit 8 incorporating an air mover in the form of a fan 10, and a power source, for example a battery pack 14.
  • a filter 16 is associated with the inlet 6 for filtering incoming air.
  • the unit 8 is conveniently carried as on a belt 17 by the wearer. Additionally, but optionally, ducts 18 may be connected to the fan 10 for distributing air within the garment, namely for delivery of conditioned air to and for withdrawal of hot humid air from the regions of high vapour generation.
  • the suit 2 is worn as a garment for the protection of an individual working or serving in a contaminated environment.
  • the individual wearer will wish to remain in the garment in as safe and as comfortable a manner as possible.
  • the fan 10 is operated to induce air 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 microclimate is thus at a positive pressure which assists in preventing accidental ingress of contaminant material.
  • the air flows through the microclimate and becomes humid, the water vapour-laden air exhausting through the outlet 7.
  • the invention allows simple air irrigation of the suit from a contaminated environment through a filter to the microclimate for circulation therewithin and exhaust to the environment. Greater mobility for the wearer is afforded because both the conditioning unit and the filter are mounted on the suit.

Landscapes

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

Abstract

Vêtement de protection constitué d'une combinaison (2) enveloppant sensiblement l'ensemble du corps de l'utilisateur et comportant une unité de conditionnement de l'air (8) montée sur le corps, qui comprend un ventilateur (10), un bloc d'alimentation (14) et un filtre (16) associé à une arrivée d'air (6) dans la combinaison.
PCT/GB1991/001649 1990-09-28 1991-09-25 Ameliorations concernant les vetements de protection Ceased WO1992005716A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9021230A GB2248174A (en) 1990-09-28 1990-09-28 Improvements in or relating to protective garments
GB9021230.9 1990-09-28

Publications (1)

Publication Number Publication Date
WO1992005716A1 true WO1992005716A1 (fr) 1992-04-16

Family

ID=10682977

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001649 Ceased WO1992005716A1 (fr) 1990-09-28 1991-09-25 Ameliorations concernant les vetements de protection

Country Status (2)

Country Link
GB (1) GB2248174A (fr)
WO (1) WO1992005716A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1552759A4 (fr) * 2002-07-10 2007-08-15 Seft Dev Lab Co Ltd Vetements maintenant le corps au frais
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050108813A1 (en) * 2003-07-10 2005-05-26 Cylena Medical Technologies Inc. Protective apparel spacers and low resistance air flow

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1155985A (fr) * 1956-07-12 1958-05-12 Aerazur Constr Aeronaut Vêtement ventilé
GB983423A (en) * 1960-04-27 1965-02-17 Paul Webb M D Personnel isolation and protection system
FR1427292A (fr) * 1964-02-11 1966-02-04 Auergesellschaft Gmbh Vêtement de protection étanche au gaz, alimenté en air par l'intérieur ou par l'extérieur
US3248897A (en) * 1965-03-30 1966-05-03 Stark Virgil Air conditioning device
GB1354372A (en) * 1971-02-23 1974-06-05 Mcdonald R H Air fed suits
DE2743535A1 (de) * 1977-09-28 1979-04-05 Kern & Grosskinsky Gasdichter schutzanzug
GB2219486A (en) * 1988-06-09 1989-12-13 Coal Ind Improvements in or relating to protective garments

Family Cites Families (3)

* 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
DE2644305C3 (de) * 1976-10-01 1981-12-17 Drägerwerk AG, 2400 Lübeck Wärme- und Gasschutzanzug
EP0332605B1 (fr) * 1988-03-09 1993-12-08 J. Blaschke Pumpen-Filteranlagen Dispositif de ventilation pour vêtement de protection

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1155985A (fr) * 1956-07-12 1958-05-12 Aerazur Constr Aeronaut Vêtement ventilé
GB983423A (en) * 1960-04-27 1965-02-17 Paul Webb M D Personnel isolation and protection system
FR1427292A (fr) * 1964-02-11 1966-02-04 Auergesellschaft Gmbh Vêtement de protection étanche au gaz, alimenté en air par l'intérieur ou par l'extérieur
US3248897A (en) * 1965-03-30 1966-05-03 Stark Virgil Air conditioning device
GB1354372A (en) * 1971-02-23 1974-06-05 Mcdonald R H Air fed suits
DE2743535A1 (de) * 1977-09-28 1979-04-05 Kern & Grosskinsky Gasdichter schutzanzug
GB2219486A (en) * 1988-06-09 1989-12-13 Coal Ind Improvements in or relating to protective garments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1552759A4 (fr) * 2002-07-10 2007-08-15 Seft Dev Lab Co Ltd Vetements maintenant le corps au frais
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
GB2248174A (en) 1992-04-01
GB9021230D0 (en) 1990-11-14

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