EP2222547A2 - Vorrichtung mit einstellbarem auftrieb - Google Patents

Vorrichtung mit einstellbarem auftrieb

Info

Publication number
EP2222547A2
EP2222547A2 EP07871874A EP07871874A EP2222547A2 EP 2222547 A2 EP2222547 A2 EP 2222547A2 EP 07871874 A EP07871874 A EP 07871874A EP 07871874 A EP07871874 A EP 07871874A EP 2222547 A2 EP2222547 A2 EP 2222547A2
Authority
EP
European Patent Office
Prior art keywords
float
pressure
volume
piston
gas
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
EP07871874A
Other languages
English (en)
French (fr)
Other versions
EP2222547B1 (de
Inventor
Jean-Michel Onofri
Etienne Clamagirand
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2222547A2 publication Critical patent/EP2222547A2/de
Application granted granted Critical
Publication of EP2222547B1 publication Critical patent/EP2222547B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B63C11/2245—With provisions for connection to a buoyancy compensator

Definitions

  • the present invention relates to buoyancy devices with constant and adjustable volume.
  • the technical field of the invention is the field of the realization of such adjustable buoyancy devices intended for any submersible entity, capable of submerging at different depths, such as a submarine diver which must compensate at any time, either an excess of weight not to sink, a surplus of buoyancy not to go back to the surface.
  • Stabilization buoys are used in particular by the autonomous divers who, during their change of depth during a dive, must manually compensate the volume of their buoy, either by injecting air from the first stage regulator. their cylinder of gas, either by purging the buoy by acting on purge valves located in different places thereof; and this is necessary for each change of depth because the volume of air / gas buoy changes with the pressure variations associated with this change in depth and must be adjusted permanently otherwise the diver will not be able to stabilize at the desired depth.
  • a buoy being made from a flexible bladder generally polyurethane, air / gas is always located in its upper part, which makes it difficult for the movements of the plunger carrying said buoy and, when this it is deflated, its shape is generally not very hydrodynamic.
  • a solution to the problem posed is a constant and adjustable volume buoyancy device intended for any submersible entity, capable of submerging at different depths, and comprising at least one flexible diaphragm float filled with a gas and whose pressure is regulated.
  • this membrane is elastic and delimits a volume of gas which is a function of the elasticity of this membrane and the internal relative pressure of said volume relative to the external ambient pressure
  • a expander-venter system ensures the supply and purge of said gas to or from said internal volume of the float.
  • said float comprises a rigid base on which said flexible membrane is fixed and tensioned, the latter determining with said rigid base said gas volume of the float, and the pressure regulator is a feed and pressure regulator. purge of gas, such that the internal pressure thereof in the float volume relative to the ambient ambient pressure is substantially maintained at a predetermined value corresponding to a desired volume of buoyancy and therefore constant.
  • the material in which the elastic membrane is made is chosen such that its modulus of elasticity remains almost constant in the deformation zone making it possible to obtain the desired buoyancy volume, this deformation being an almost monotonous function. and one-to-one of the relative internal pressure of the float.
  • the result is a new buoyancy device that automatically keeps a constant volume at a value chosen by the operator, such as a diver, whatever the immersion of it.
  • Such a device may comprise several floats able to be distributed around a submersible entity, such as the plunger itself, so that in immersion their resulting total thrust center is almost coincidental with the center of gravity of said entity or the diver, allowing him easier position changes.
  • a submersible entity such as the plunger itself
  • the characteristics of the float according to the invention gives it a hydrodynamic shape irrespective of its inflation volume and the design of the expansion valve makes it possible to reduce the size of the purge valves with respect to those of the current constant volume buoys, which, Due to their low differential pressure operation, large air / gas flow diameters are required.
  • Other advantages of the present invention could be mentioned, but those mentioned above already show enough to demonstrate novelty and interest.
  • the description and the accompanying drawings show exemplary embodiments of the invention but are not limiting in nature: other embodiments are possible within the scope and scope of the present invention, such as in particular in the form and the realization of the floats and their base.
  • Figures IA and IB show a device according to the invention and equipping a plunger.
  • Figures 2A to 2F show different views of a float according to the invention.
  • FIGS. 3A and 3B respectively represent a perspective view and a sectional view along A, A 'of FIG. 3A of a pressure reducer according to the present invention.
  • the submersible entity is a plunger 19 carrying a bottle or reserve of gas or air 32 on its back, as shown in FIG. 1B, able to supply, thanks to a first stage expander. 31i and a regulator-expander 20, different floats 11 connected in parallel such as the three shown in Figure 1, one on the chest of the plunger 19 and the other two on either side of the reservoir bottle 32.
  • the regulator 20 refers to the external ambient pressure 33 and allows, as defined hereinafter, the adjustment of the differential pressure between the interior of the floats 11 and said ambient external pressure hereafter.
  • the volume of the floats 11 which can vary from 0 to 6 liters, for example for an adjustable pressure ranging from 0 to 1 bar, remains constant whatever the immersion.
  • each float 11 comprises a resilient flexible membrane 23, fixed and tensioned on a rigid base 25.
  • said rigid base 25 is convex and the elastic membrane 23 is placed and pretensioned against the convex face of this base 25 before anything else. filling of gas or air.
  • the elastic membrane comprises one less a peripheral rib 26 which cooperates with a groove 22 of a counter-flange 21 which is fixed on the rigid base outside the rib 26 by sandwiching the edge of said membrane 23.
  • the fixing between the base, the diaphragm and the counter-flange can be done by tightening bolts 34 passing through these three elements and without requiring a strong tightening due to the characteristics above rib-throat.
  • the initial tension of the membrane is calculated to allow a work of this membrane 23 in an area where its modulus of elasticity is approximately constant or at least so that its deformation is a monotonic and one-to-one function of the pressure: the thickness and the mechanical characteristics of the membrane are chosen to have a volume gives to the maximum pressure of output, to the float 11, chosen for the regulator 20.
  • the air or gas is injected, between the convex surface of the rigid base 25 and the membrane, through an inlet / outlet orifice 28 and a connection 30 connecting each float 11 to the regulator-discharge regulator 20, in order to obtain a predetermined interior volume 29.
  • the convex base 25 comprises stiffeners 27 in its external concave portion sized to prevent any deformation of the base during pressurization.
  • it may comprise a bulge 24 which penetrates into the groove 22 of the counter-flange 21 in which it is crushed by the rib 26 of the base 25.
  • FIG. 2A is an exploded view of a base, a diaphragm and a counter flange constituting a float 11 with a detail view 2B;
  • Figures 2C and 2D show the same elements as Figures 2A and 2B but once assembled by a system such as nut bolts 34 or any other clamping system.
  • FIG. 2E is a view of a float 11 in the active position with air or gas insufflated in its interior volume 29 and
  • FIG. 2F is a bottom view of the concave portion of the base 25 as a example.
  • the expander / expander system 20 consists of a single regulator block, comprising an external body or casing 1 made up of several parts, including a cylindrical hollow core 1b receiving the elements -after, and ends l a , l c screwed and closing this central part: in it the valve purge 7, allowing the gas to escape to the outside 33 through the bleed holes 33 2 , from the inside of the float 11 through the connection 30 thereof to the port 3O 2 of the regulator.
  • the pressure regulating piston 6 which carries the seat 9 of the purge valve 7, and which also controls the supply valve 2 in gas or air through the orifices 3I 2 from the expander 31i and towards the inside of the float 11 through said orifices 3O 2 ; the valve 2 and the orifices 3I 2 being located in an end portion 1c of the body 1.
  • Each purge valve 7 and supply 2 having a seal integral with a face of a piston bearing against its closure seat, is compensated, that is to say that the inner surface defined by said seat bearing on the face of the piston seal holder is equal to the surface of the opposite face of the piston and subjected to the same downstream pressure through a bore made in said piston and communicating the two said faces, the upstream pressure is not s exerting only on at least part of the lateral faces of the piston.
  • the opening force of said valves does not depend on the upstream pressure or the downstream pressure, but only the compressive force of the springs 16 and 17 which ensure the tightness of said valves on their seat support.
  • Said springs are chosen with the lowest constants of stiffness possible in order to reduce the adjustment error of the upstream and downstream pressure differential which will ensure the opening of the valves: for example for a piston of 20 cm 2 , a compressive force 5 Newton springs represents a setting insensitivity of 0.025 bar.
  • the helical spring 16 is supported at one of its ends inside the piston 6 and at its other end on the purge valve 7, which valve being limited in its movement, causes by the thrust of the spring 16, by a stop 10 secured to the body 1 through a screw 12 described below and after the part carried by the a end thereof opposite that carrying the c the valve 2, and disposed adjacent to the spring 8 defined above after .
  • the helical spring 17 bears against one of its ends against the body 1 of the regulator block 20 and at its other end on the supply valve 2, the seat 4 of said valve being integral with the body 1 of the regulator block 20
  • a third helical spring 8, as mentioned above, is supported at one of its ends on a stop 13 integral with the body 1 of the regulator block 20 and adjustable by a knob 15, and at its other end on the piston 6, which piston is balanced on one side by its spring 8 and the external ambient pressure 33, and on the other side by the inflation pressure of the float 11.
  • the mode of operation of such a pressure reducing valve is such that the air or the feed gas arriving through the orifice 3 ⁇ 2 passes through the valve 2 to inflate the floats 11 through a chamber 18 closed by the piston 6: this is balanced by the action of the spring 8 bearing on the stop 13 adjustable by the wheel 15 acting on a screw 12 bearing on a thrust bearing 14 and the hydrostatic pressure on one side, and the action of the float inflation pressure on the other side.
  • a stop 5 limits the displacement of the piston 6 in the event of significant imbalance, in order to limit the force on the rod 3.
  • the rods 10 and 3 are adjustable to adjust the sensitivity of the pressure reducer 20 at the opening of the flush valves or supply and purge.
EP07871874A 2006-12-12 2007-12-04 Vorrichtung mit einstellbarem auftrieb Not-in-force EP2222547B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0610839A FR2909635B1 (fr) 2006-12-12 2006-12-12 Dispositif de flottabilite reglable
PCT/FR2007/052438 WO2008081127A2 (fr) 2006-12-12 2007-12-04 Dispositif de flottabilité réglable

Publications (2)

Publication Number Publication Date
EP2222547A2 true EP2222547A2 (de) 2010-09-01
EP2222547B1 EP2222547B1 (de) 2012-06-06

Family

ID=38337992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07871874A Not-in-force EP2222547B1 (de) 2006-12-12 2007-12-04 Vorrichtung mit einstellbarem auftrieb

Country Status (5)

Country Link
US (1) US8517635B2 (de)
EP (1) EP2222547B1 (de)
ES (1) ES2389273T3 (de)
FR (1) FR2909635B1 (de)
WO (1) WO2008081127A2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3475161B1 (de) 2016-06-24 2023-09-13 Avelo Labs Inc. Leichtgewichtiges tauchgerät mit anpassbarem auftrieb
US11134084B1 (en) 2018-08-22 2021-09-28 Hid Global Corporation Diversified authentication and access control

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3054414A (en) * 1960-03-07 1962-09-18 Gerald B Blackwell Underwater air supply regulator
US3179118A (en) * 1962-04-16 1965-04-20 Dacor Corp Underwater breathing apparatus
US3495607A (en) * 1964-09-14 1970-02-17 Voit Rubber Corp First stage regulator and reserve valve in common housing
US3436777A (en) * 1967-06-22 1969-04-08 Alden T Greenwood Diver's jacket and buoyancy control device
ES404538A1 (es) * 1972-07-05 1975-06-16 Nemrod Metzeler Sa Mejoras introducidas en la fabricacion de manorreductores de depresion para buceo.
US4054132A (en) * 1975-04-14 1977-10-18 Douglas Allen Deeds Integrated diving system
GB1532411A (en) * 1975-12-22 1978-11-15 Pope D Bouyancy regulation
US4561853A (en) * 1983-04-18 1985-12-31 U.S.D. Corp Buoyancy compensator, bladder, and process of manufacture
US5221161A (en) * 1992-05-26 1993-06-22 Toy Jeffrey W Ballast tank for buoyancy compensation
US5403123A (en) * 1992-07-29 1995-04-04 Walters; William D. Gas impermeable, elastically deformable laminate and inflatable articles formed therefrom
US5980158A (en) * 1995-07-10 1999-11-09 Griffiths; John M. Buoyancy compensation device with restraining means
US5542446A (en) * 1995-08-08 1996-08-06 Rose; Richard H. Scuba buoyancy control valve
US5660503A (en) * 1996-01-11 1997-08-26 Lewis; R. David Light weight scuba with buoyancy control
IT1287785B1 (it) * 1996-05-16 1998-08-18 Htm Sport Spa Riduttore di pressione, per il primo stadio di riduzione degli autorespiratori subacquei bistadio.
US6341921B1 (en) * 2000-05-11 2002-01-29 Steve Anderson Self-adjusting lumbar support for buoyancy compensator vest
US20040142801A1 (en) * 2002-01-03 2004-07-22 Asia Regent Limited Compliant body-pressing exerciser
US20070155601A1 (en) * 2005-12-30 2007-07-05 Dykgraaf Brenda S Inflatable exercise device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008081127A2 *

Also Published As

Publication number Publication date
US8517635B2 (en) 2013-08-27
EP2222547B1 (de) 2012-06-06
WO2008081127A3 (fr) 2008-11-27
ES2389273T3 (es) 2012-10-24
FR2909635B1 (fr) 2009-03-06
WO2008081127A2 (fr) 2008-07-10
FR2909635A1 (fr) 2008-06-13
US20100304629A1 (en) 2010-12-02

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