EP1758657A2 - Gesichertes belüftetes atmungsgerät, insbesondere für feindliche umgebungen - Google Patents

Gesichertes belüftetes atmungsgerät, insbesondere für feindliche umgebungen

Info

Publication number
EP1758657A2
EP1758657A2 EP05757255A EP05757255A EP1758657A2 EP 1758657 A2 EP1758657 A2 EP 1758657A2 EP 05757255 A EP05757255 A EP 05757255A EP 05757255 A EP05757255 A EP 05757255A EP 1758657 A2 EP1758657 A2 EP 1758657A2
Authority
EP
European Patent Office
Prior art keywords
piston
chamber
ventilated
pressure
supply tube
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
EP05757255A
Other languages
English (en)
French (fr)
Other versions
EP1758657B1 (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 Protective Clothing SAS
Original Assignee
Delta Protection SAS
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 Delta Protection SAS filed Critical Delta Protection SAS
Publication of EP1758657A2 publication Critical patent/EP1758657A2/de
Application granted granted Critical
Publication of EP1758657B1 publication Critical patent/EP1758657B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/006—Indicators or warning devices, e.g. of low pressure, contamination

Definitions

  • the present invention relates to secure ventilated spacesuits, in particular for hostile environments, which find a particularly advantageous application as clothing for anti-nuclear, anti-bacteriological confinement, protection in a hospital environment, etc., that is to say clothing which responds to safety standards applicable in particular in the nuclear, bacteriological, chemical, biological, etc. fields, and even as clothing equipment to, for example, reduce thermal stress.
  • clothing which responds to safety standards applicable in particular in the nuclear, bacteriological, chemical, biological, etc. fields, and even as clothing equipment to, for example, reduce thermal stress.
  • One of the means used to protect these people is to coat them with a suit which covers them, in full if the suit is of the “total” type, or partially if the suit is of the "helm”, “hood” or analog which covers a more or less large part of the upper part of the body.
  • a spacesuit consists of a skin which defines an envelope in which the person to be protected can hold as mentioned previously in whole or in part, and a pressurized fluid supply tube, one end of which is capable of being connected to a source of this fluid situated in a clean place and the other end of which dips into the envelope, passing through the skin through a sealed passage with a conduit '' a sufficient length for the person wearing such a diving suit to achieve all the objectives set for him in the environment in which he must s move.
  • the object of the present invention is to provide a suit ventilated by means of a given fluid, which tends to reach the best possible objectives defined above.
  • the subject of the present invention is a ventilated suit which is secure for a person, when said suit is suitable for use in an ambient medium where an atmosphere prevails at a pressure P a substantially constant, as defined in claim 1 appended.
  • P a substantially constant
  • the single figure represents an embodiment of a ventilated safety suit according to the invention which finds a particularly advantageous application in the field, as mentioned before, of anti-nuclear, anti-bacteriological, protection in hospital confinement, etc., specifying that such a secure ventilated suit is intended to be worn by a person who must move and work in an ambient environment where an atmosphere prevails at a pressure P has substantially constant, for example atmospheric pressure.
  • a spacesuit comprises an envelope 2 formed from a skin 3 made of a waterproof material, for example polyvinyl chloride (PVC).
  • It further comprises a tube 4 for supplying a given fluid such as industrial air or the like, a first end 5 of which is capable of being connected to a source of the given fluid (not shown) capable of delivering this given fluid. at pressure P n greater than pressure P a , and the other second end 6 of which crosses the skin 3, by means of a sealed passage 7 for plunging inside 9 of the envelope 2. It also includes vent means 8 made in the skin 3 for communicating the interior 9 of the envelope with the ambient medium 1 outside of the latter. These venting means can be of different forms and are well known in themselves. They will therefore not be described more fully here for the sole purpose of simplifying the present description.
  • the spacesuit further comprises means 10 for visually warning the person wearing it, when the pressure of the fluid in the supply tube 4 falls below a given threshold value P s less than P n .
  • these means 10 for visually warning the person when the pressure of the fluid in the supply tube falls below a given threshold value P s less than P n are constituted by a conduit 11 whose a first end 12 is fluidly connected to the supply tube 4 and the other second end 13 of which is connected to the ambient medium 1, the conduit 11 comprising, between its first and second ends 12, 13, at least one part 14 of which l interior is cylindrical, advantageously of revolution.
  • a piston 15 mounted to slide in leaktight manner in this cylindrical part of conduit 14 to delimit therein two first and second chambers 16, 17 with variable volumes in opposite directions to one another, the first chamber 16 being in communication with the interior 44 of the supply tube 4 and the second 17 in communication with the ambient environment 1.
  • These means 10 also comprise a transparent sealed window 18 produced in the wall 19 of the cylindrical inner part of the conduit 14 and located on the path of the piston 15 when it slides, and means 20 for applying an elastic force to the face 21 of the piston 15 adjacent to the second chamber 17, the intensity of this " elastic force varying inversely proportional to the variation in the volume of the second chamber 17.
  • this elastic force is determined so that the piston 15 at least partially obscures said transparent window 18 when the pressure in the supply tube 4 is less than P s , and the piston is outside said window when the pressure in the supply tube 4 is at least equal to P s .
  • the conduit 11 is mounted in association with the supply tube 4 so that the transparent window 18 is located in the field of vision 54 of the person when he is wearing the diving suit, for the reason explained below in the description of the operation of the secure diving suit according to the invention. It is also advantageous for this transparent window 18 to be constituted by an annular portion made of a transparent material, from the side wall of the first chamber 16.
  • the means 20 for applying the elastic force are constituted, as illustrated in the figure, by a compression spring 27, of the helical type, located in the second chamber 17.
  • a compression spring 27 of the helical type, located in the second chamber 17.
  • One 22 of the ends of this spring 27 is mounted in contact with the face 21 of the piston 15 adjacent to the second chamber 17 and the other end 23 is mounted in contact with a stop 24 produced in this second chamber 17.
  • the stop 24 consists for example of a flange 25 integral with the wall 19 of the cylindrical part of duct, this flange 25 projecting towards the inside of the second chamber 17.
  • the visual warning means 10 include means 30 to limit the sliding of the piston in the first chamber 16, for example a lug or the like located at the end 12 of the cylindrical part of the duct 14.
  • a preferred embodiment of the ventilated diving suit secured according to the invention has been described above. But it is of course possible to produce such a spacesuit according to other embodiments. For example, it has been described and illustrated a duct having a uniform section over its entire length.
  • a helical spring has been illustrated and given as a preferred example of industrial and economic achievement.
  • other embodiments are possible, for example an air spring or the like.
  • the cylindrical part of conduit 14 which has been shown directly connected to the supply tube 4 and to the ambient medium 1 is indirectly connected to this supply tube 4 and to this ambient medium 1, for example by means of long pipes or the like. This is for example the case where it would be necessary to place the sealed passage in a more favorable location for the realization of the diving suit but located outside the field of vision of the person wearing the diving suit. It would then be necessary to connect the cylindrical part of conduit 14 to the supply tube 4 by means of an auxiliary tube whose length would make it possible to position it, with its transparent window 18, in the field of vision.
  • the diving suit described above operates in the following manner: It is first assumed that a person wearing a diving suit according to the invention as described above must move in a hostile environment. For this, the end 5 of the supply tube 4 is connected to a source of fluid, for example industrial air, under a pressure P n greater than the pressure P a of the ambient medium.
  • a source of fluid for example industrial air
  • P n greater than the pressure P a of the ambient medium.
  • the interior 9 of the envelope 2 is thus put under overpressure to allow the person to breathe normally and the envelope to be normally ventilated, the vent means 8 making it possible to maintain the interior of the envelope 2 at a relatively constant pressure and the air expelled by these vent means preventing dangerous products from entering inside the envelope.
  • the ventilated suit according to the invention is of a very simple embodiment, inexpensive and very reliable in terms of safety because, in addition, it does not include any electrical elements. or the like which may affect the safety of persons who are required to wear such spacesuits.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Toxicology (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Pulmonology (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
EP05757255A 2004-04-27 2005-04-18 Gesichertes belüftetes atmungsgerät, insbesondere für feindliche umgebungen Not-in-force EP1758657B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0404411A FR2869237B1 (fr) 2004-04-27 2004-04-27 Scaphandre ventile securise notamment pour milieu hostile
PCT/FR2005/000918 WO2005110547A2 (fr) 2004-04-27 2005-04-18 Scaphandre ventile securise notamment pour milieu hostile

Publications (2)

Publication Number Publication Date
EP1758657A2 true EP1758657A2 (de) 2007-03-07
EP1758657B1 EP1758657B1 (de) 2012-07-11

Family

ID=34945272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05757255A Not-in-force EP1758657B1 (de) 2004-04-27 2005-04-18 Gesichertes belüftetes atmungsgerät, insbesondere für feindliche umgebungen

Country Status (5)

Country Link
US (1) US20070215148A1 (de)
EP (1) EP1758657B1 (de)
CN (1) CN1946457B (de)
FR (1) FR2869237B1 (de)
WO (1) WO2005110547A2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11027156B2 (en) 2011-10-21 2021-06-08 Honeywell International Inc. Emergency filter system for ventilated hood
US10004925B2 (en) 2011-10-21 2018-06-26 Honeywell International Inc. Emergency filter system for encapsulated suit
US9186528B2 (en) 2012-04-20 2015-11-17 Honeywell International Inc. Adjustable low pressure warning device
US9000913B2 (en) 2013-01-02 2015-04-07 Honeywell International Inc. Wearable low pressure warning device with audio and visual indication
ES2573852T3 (es) * 2014-04-07 2016-06-10 Honeywell International Inc. Sistema de distribución de aire integral en la parte posterior en un traje ventilado

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB582882A (en) * 1945-03-16 1946-11-29 Richard Charles London Improvements in warning apparatus for oxygen supply apparatus in aircraft
US4455683A (en) * 1982-03-29 1984-06-26 E.D. Bullard Company Self-adjusting protective garment
DE3422725C2 (de) * 1983-10-28 1987-04-23 Rainer 8963 Waltenhofen Achterholt Ventilkappe mit Druckminderungsanzeige für Luftreifen
GB8524181D0 (en) * 1985-10-01 1985-11-06 Stewart J S S Breathing equipment
CN1007638B (zh) * 1986-11-15 1990-04-18 廊坊制动空压机厂 曲轴通道式呼吸结构
US4944323A (en) * 1987-12-16 1990-07-31 Wagnon Power Jack, Inc. Tire pressure indicator
US5355875A (en) * 1992-10-06 1994-10-18 Vinatronics Division Protective garment using one-way valves
DE19700229C2 (de) * 1996-03-05 1998-11-05 Draegerwerk Ag Atmungsvorrichtung mit Strömungsanzeiger für die Atemluft
US6418786B1 (en) * 1998-10-13 2002-07-16 Larry W. Holcomb Aircheck safety valve
US7331345B2 (en) * 2003-01-30 2008-02-19 Survivair Respirators, Llc Demand regulator protective bellows
US20040182394A1 (en) * 2003-03-21 2004-09-23 Alvey Jeffrey Arthur Powered air purifying respirator system and self contained breathing apparatus
US6978670B2 (en) * 2004-04-05 2005-12-27 William Cousineau Tire valve-gauge combination

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005110547A2 *

Also Published As

Publication number Publication date
WO2005110547A2 (fr) 2005-11-24
EP1758657B1 (de) 2012-07-11
US20070215148A1 (en) 2007-09-20
CN1946457B (zh) 2011-02-09
FR2869237B1 (fr) 2006-12-29
CN1946457A (zh) 2007-04-11
FR2869237A1 (fr) 2005-10-28
WO2005110547A3 (fr) 2006-03-16

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