EP0460980B1 - Appareil respiratoire de plongée à capacité variable - Google Patents

Appareil respiratoire de plongée à capacité variable Download PDF

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Publication number
EP0460980B1
EP0460980B1 EP91401156A EP91401156A EP0460980B1 EP 0460980 B1 EP0460980 B1 EP 0460980B1 EP 91401156 A EP91401156 A EP 91401156A EP 91401156 A EP91401156 A EP 91401156A EP 0460980 B1 EP0460980 B1 EP 0460980B1
Authority
EP
European Patent Office
Prior art keywords
casing
control part
diaphragm
main part
periphery
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.)
Expired - Lifetime
Application number
EP91401156A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0460980A1 (fr
Inventor
Frédéric Perrier
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.)
La Spirotechnique Industrielle et Commerciale
Original Assignee
La Spirotechnique Industrielle et Commerciale
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 La Spirotechnique Industrielle et Commerciale filed Critical La Spirotechnique Industrielle et Commerciale
Publication of EP0460980A1 publication Critical patent/EP0460980A1/fr
Application granted granted Critical
Publication of EP0460980B1 publication Critical patent/EP0460980B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/18—Air supply
    • B63C11/22—Air supply carried by diver
    • B63C11/24—Air supply carried by diver in closed circulation

Definitions

  • the present invention relates to diving breathing apparatus of the closed or semi-closed circuit type, comprising a variable capacity, partially delimited by a flexible wall mounted by its periphery on a housing, permanently communicating with a portion of the inspiration circuit and a portion of the expiration circuit and, selectively, with a source of gas under pressure via a pressure reducer mounted in the housing and controllable by cooperation with the flexible wall.
  • the movable wall of variable capacity commonly called “respiratory bag” or “false lung”
  • the movable wall of variable capacity conventionally consists of a coated fabric canvas, deliberately rigid enough to "harden” the inspiration artificially. and the injection of gas under pressure, which makes the respiratory work of the diver relatively important, even when the regulator is not stressed.
  • the oxygen in the gas mixture under pressure is consumed and transformed into carbon dioxide retained by a purifying layer, the gas thus consumed being replaced by the pressurized gas expanded to ambient pressure when the plunger creates sufficient depression in the variable capacity for the movable wall to activate the regulator.
  • the gas flow from this regulator must be controlled by the diver so that he injects only the amount of gas necessary for the proper conduct of his dive. If the regulator has too large a flow, the quantity of gas injected into the variable capacity will be too large and will modify the buoyancy of the diver and his device.
  • the object of the present invention is to propose an arrangement making it possible to reduce the respiratory work provided by the diver while retaining perfect control of the injection of respiratory gas in the variable capacity.
  • the flexible wall consists of a diaphragm made of preformed elastomeric material to present a main part and a part of reduced surface control, offset towards the outside of the housing relative to the main part and arranged to cooperate with the regulator.
  • the main part is connected to the periphery of the diaphragm by at least one fold projecting towards the outside of the housing.
  • the main part of the diaphragm of large and relatively flexible surface, can move easily under the action of a small pressure variation in the variable capacity, as long as it is not useful to create in the latter an injection of gas under pressure.
  • the control part of reduced surface and typically more rigid, will only move under the action of a consequent pressure variation in the variable capacity, caused by the plunger so as to come to operate selectively and wisely the regulator.
  • a scuba diving breathing apparatus with gas regeneration of the closed type, comprising a housing 1, advantageously made of plastic or composite material, with a bottom 2 and a peripheral wall 3, closed by a wall mobile 4 thus defining a variable internal capacity 5.
  • the latter permanently communicates with a respiratory nozzle 6 via a portion of the inspiration circuit 7 provided with a non-return valve 8, and a portion of expiration circuit 9 provided with '' a non-return valve 10 and a carbon dioxide scrubber cartridge 11.
  • the capacity variable 5 communicates selectively, via a regulator 12 mounted in the housing 1, with a conduit 13 of breathing gas available under pressure in a bottle 14 via a high-pressure regulator 15 with manual adjustment.
  • the movable wall 4 consists of a diaphragm in the form of a flexible membrane of elastomeric material, typically of silicone with Shore hardness between 30 and 40, with a thickness between 1, 5 and 3 mm, of annular shape, resiliently mounted by a peripheral bead 16 on the peripheral wall 3 of the housing 1.
  • a regulator housing 17 containing a valve 18 cooperating with a valve seat 19 into which opens the conduit 13 and actuable, in a manner known per se, by a rocking lever 20 projecting slightly in a recess 21 in the bottom of the housing.
  • the diaphragm 4 is shaped to have a main part 22 of normally substantially planar configuration, connected to the peripheral bead 16 by a peripheral ply 23 projecting outwards, and a reduced surface control part 24 offset towards the outside with respect to the main part 22 and disposed opposite the recess 21 so as to be able to cooperate selectively with the lever 20 to actuate the regulator 18 when the breathable volume of the capacity 5 has reached its acceptable minimum ( 0.1 liter).
  • the diaphragm 4 has a useful diameter greater than 0.10 m, typically about 0.25 m, dimensioned to offer a maximum volume of the capacity 5 of the order of 6 liters.
  • the surface of the control part 24 is less than a tenth of the surface of the main part. In the example shown, the control part 24 is circular and has a useful diameter of approximately 45 mm.
  • the internal face of the control part 24, cooperating with the lever 20, can be provided with a reinforcing coating 25.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP91401156A 1990-06-07 1991-05-02 Appareil respiratoire de plongée à capacité variable Expired - Lifetime EP0460980B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9007076 1990-06-07
FR9007076A FR2662993B1 (fr) 1990-06-07 1990-06-07 Appareil respiratoire de plongee a capacite variable.

Publications (2)

Publication Number Publication Date
EP0460980A1 EP0460980A1 (fr) 1991-12-11
EP0460980B1 true EP0460980B1 (fr) 1994-09-28

Family

ID=9397363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401156A Expired - Lifetime EP0460980B1 (fr) 1990-06-07 1991-05-02 Appareil respiratoire de plongée à capacité variable

Country Status (6)

Country Link
US (1) US5199425A (es)
EP (1) EP0460980B1 (es)
JP (1) JPH04231279A (es)
DE (1) DE69104270T2 (es)
ES (1) ES2061199T3 (es)
FR (1) FR2662993B1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040035415A1 (en) * 2002-08-22 2004-02-26 Michel Faligant Breathing apparatus
US8556633B2 (en) * 2010-04-08 2013-10-15 Thomas M. Aaberg Device for teaching the use of underwater breathing systems and method of its use
CN102488952A (zh) * 2011-12-19 2012-06-13 杭州新颖氧舱有限公司 一种双气囊呼吸装具
DE102017011583B4 (de) * 2017-12-14 2023-04-27 Dräger Safety AG & Co. KGaA Atembeutel, System aus einem Atembeutel und einer Dosierventileinheit, Kreislaufatemschutzgerät sowie Verfahren zur Montage eines Systems aus einem Atembeutel und einer Dosierventileinheit in einem Kreislaufatemschutzgerät

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900977A (en) * 1955-05-31 1959-08-25 De Loss L Marsh Underwater breathing apparatus
FR1228007A (fr) * 1956-02-27 1960-08-26 France Etat Appareil respiratoire à oxygène pur fonctionnant en circuit fermé pour plongeurs sous-marins autonomes

Also Published As

Publication number Publication date
FR2662993B1 (fr) 1995-07-28
DE69104270T2 (de) 1995-02-16
ES2061199T3 (es) 1994-12-01
JPH04231279A (ja) 1992-08-20
DE69104270D1 (de) 1994-11-03
US5199425A (en) 1993-04-06
EP0460980A1 (fr) 1991-12-11
FR2662993A1 (fr) 1991-12-13

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