EP1890073A1 - Portable device for oxygen storage and delivery - Google Patents

Portable device for oxygen storage and delivery Download PDF

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Publication number
EP1890073A1
EP1890073A1 EP07301212A EP07301212A EP1890073A1 EP 1890073 A1 EP1890073 A1 EP 1890073A1 EP 07301212 A EP07301212 A EP 07301212A EP 07301212 A EP07301212 A EP 07301212A EP 1890073 A1 EP1890073 A1 EP 1890073A1
Authority
EP
European Patent Office
Prior art keywords
lever
housing
filling
casing
vent valve
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.)
Withdrawn
Application number
EP07301212A
Other languages
German (de)
French (fr)
Inventor
Philippe Dodier
Eliette Ferre
Joseph Mazoyer
Eric Sermet
Frédéric Malboze
Gautier Vadon
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.)
Cryopal SA
Original Assignee
Air Liquide SA
LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP1890073A1 publication Critical patent/EP1890073A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0103—Exterior arrangements
    • F17C2205/0111—Boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/0126—One vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/0157—Details of mounting arrangements for transport
    • F17C2205/0161—Details of mounting arrangements for transport with wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/011—Oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/0393—Localisation of heat exchange separate using a vaporiser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/02—Improving properties related to fluid or fluid transfer
    • F17C2260/021—Avoiding over pressurising
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/03—Treating the boil-off
    • F17C2265/031—Treating the boil-off by discharge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/02—Applications for medical applications
    • F17C2270/025—Breathing

Definitions

  • the present invention relates to a transportable device for storing and delivering oxygen.
  • the invention relates more particularly to a transportable oxygen storage and delivery device comprising a housing containing a cryogenic tank intended to contain liquid oxygen, a heating circuit connected to the tank comprising at least one heating / vaporization member of oxygen from the reservoir for supply to a user, a filling circuit of the cryogenic tank comprising a fluidic connection member such as a male or female filling terminal adapted to be connected, in a filling direction, to a terminal complementary to a liquid oxygen reserve, a vent valve connected to the interior of the tank, a movable control member of the manually operable vent valve, the control member being movable relative to the housing for actuate the vent valve via a motion transmission system between closed and open positions opening of said valve.
  • a transportable oxygen storage and delivery device comprising a housing containing a cryogenic tank intended to contain liquid oxygen, a heating circuit connected to the tank comprising at least one heating / vaporization member of oxygen from the reservoir for supply to a user, a filling circuit of the cryogenic tank comprising
  • Such portable oxygen storage and delivery devices are generally worn by the users by means of a strap or shoulder strap. These devices generally called “portable oxygen reserve” are intended to be connected to the respiratory system of the patient, for example by means of a telescope connectable to the nostrils of the patient. These portable devices must thus accompany the user in his movements of his daily life.
  • the opening of the vent valve is manually controlled by a pivoting lever positioned at the bottom of the notebook.
  • the user To fill the laptop, the user must simultaneously press the laptop on the reserve to cause the opening of the filling terminal and pull the control lever of the vent valve.
  • This combination of operations is relatively difficult for such a patient because it requires coordination of two separate movements with relatively large efforts.
  • the control member of the valve because of the inconvenient arrangement of the control member of the valve, the user often tends to exert excessive force on the actuator member of the valve. This frequently causes a deformation of the axis of the vent valve and therefore a decrease in the life of said valve.
  • the known systems are generally unsuitable in terms of ergonomics and maneuverability for patients with respiratory failure and in particular for the elderly.
  • the mass of these portable systems generally exceeds 1.5 kg which can be a very important load for these patients.
  • An object of the invention is to propose overcoming all or part of the disadvantages of the prior art.
  • the transportable storage and oxygen delivery device is essentially characterized in that in its movement from the closed position to the open position, the organ control unit describes a movement having at least one component oriented substantially inwardly of the housing and / or in the filling direction.
  • the transportable oxygen storage and delivery device comprises a casing 3 of generally oblong shape that tapers towards its upper end.
  • the housing 3 contains a cryogenic tank 1 for containing liquid oxygen (in equilibrium with steam).
  • the housing 3 also houses a heating circuit connected to the tank 1 (not shown in detail because known per se) comprising in this example two coils 2, 12 for heating / vaporization of oxygen from the tank 1 for its supply to a user (via a telescope for example).
  • a heating circuit connected to the tank 1 (not shown in detail because known per se) comprising in this example two coils 2, 12 for heating / vaporization of oxygen from the tank 1 for its supply to a user (via a telescope for example).
  • the lower base of the casing 3 is removably secured to a base 4 provided with rollers 5 thus allowing the rolling movement of the device.
  • the device may comprise a first handle 11 preferably located in the upper part of the housing 3.
  • the first handling handle 11 is integral with at least one axis 120 or rod adapted to be deployed or retracted relative to the housing 3, for example via a telescopic sliding mechanism or the like which can be housed in the housing 3.
  • the upper handle 11 can be equipped with a means of height adjustment, depending on the size of the patient.
  • the axis 120 has a rectangular, square or similar non-circular section cooperating with a complementary guide. In this way, the alignment of the handle 11 relative to the housing 3 is ensured.
  • such a retractable shaft 120 geometry facilitates the rolling operation by preventing in particular a torsion of the axis 120 along its length.
  • the housing 3 may include a second handle 13 handling.
  • the second handling handle 13 may have a movable structure between the retracted position and an extended position and a return member 32 biasing the handle 13 towards its retracted position.
  • the second handle 13 comprises a strap whose end (for example lower) is connected to a spring system 32 located in the housing 3. The spring system 32 ensuring the tension and the retraction of at least a part of the strap 13 in the housing volume 3 when not used to wear the device.
  • This spring system 32 may be associated with a mechanism for measuring the mass of the transportable device when it is loaded. That is to say that when the user carries the device by the strap 13 deployable / retractable, the spring 32 is biased depending on the mass of the device.
  • the measurement of the liquid level in the tank 1 can thus be correlated with a means of measuring the tension of the spring 32.
  • This measurement reflects the level of liquid in the tank 1.
  • the display 40 of this level is preferably located substantially in the middle or lower part of the casing 3.
  • the arrangement of the masses in the casing 3 (Tank 1 and circuits 2 in particular) as well as the position of the display 40 can facilitate the reading of the level 40 by a natural rocking of the assembly when the device is carried by the strap 13. That is to say that the face of the housing 3 provided with the display 40 is turned upwards towards the user.
  • the second handle 13 is perfectly integrated in the central zone of the housing 3, which allows its gripping in any position of the system.
  • the base 4 rolling and casing 3 comprise fastening members 6, 16; 7, 17 conjugates selectively allowing the maintenance of the housing 3 on the base 4 or their separation (see Figures 2 to 5).
  • the conjugate fastening members comprise a first hook 16 movable in rotation and a second fixed hook 6 integral with the base 4 and two corresponding housing 7, 17 corresponding formed in the part bottom of the housing 3 and intended to accommodate respectively with the two hooks 6, 16 of the base.
  • the base 4 has the general shape of an ovoid concave receptacle and open upwards.
  • the lower part of the casing 3 may comprise at least one opening intended to face the concave upper surface of the base 4.
  • the concave zone of the base 4 forms a volume 10 for collecting the condensas generated by the oxygen reheating / vaporization member (s) 2, 12 located in the housing 3.
  • the condensate collection zone (10) can thus accommodate a moisture absorbing element such as an interchangeable felt.
  • the accessibility of this collection zone 10 is easy and fast which facilitates the regular change of the moisture absorption felt.
  • the two hooks 6, 16 are respectively located at two ends of the base 4 and have their hooking end facing towards each other.
  • the base 4 comprises a member 8 for controlling the mobile hook 16 such as an articulated pedal.
  • the pedal 8 ejection housing 3 is integral in rotation of the hook 16 mobile.
  • the user can then disengage the casing 3 from the base 4 by manipulating it by the upper handle 11. That is to say that the housings 7, 17 for catching the casing 3 can be disengaged from the hooks 16 by rotating the casing 3 around its lower part.
  • a return element 9 such as a spring biases the pedal towards its first position for holding the hook 16 movable in the locking position of the casing 3 on the base 4.
  • hooks can be formed on the housing and the corresponding housing on the base 4.
  • any other male / female hooking system can be considered.
  • several hooks or mobile bolts or the like may be provided.
  • the base 4 may include a support zone 19 adapted to rest on the ground.
  • the portion of the base 4 intended to receive the housing 4 is located substantially between the support zone 19 and the portion of the base provided with the rollers 5. In this way, the device can be kept upright in a stable position on the zone d 19 and the casters 5 and can be inclined to roll only on the casters 5.
  • the base 4 comprises for example two wheels 5 or parallel wheels mounted on a common axis perpendicular to the mounting direction of the housing 3 on the base 4.
  • any other rolling system may be envisaged (balls or the like).
  • the wheels can be interchangeable and / or retractable depending on the uses.
  • the oxygen tank 1 and a first portion 2 of a first heating coil and vaporization are arranged in the lower part of the housing 3 while the second portion 12 of the first coil In the upper part of the casing 3, above the tank 1, a heating and vaporization chamber is arranged.
  • a second heating coil 102 for the gas phase is arranged concentrically inside the second upper part 12 of the first coil.
  • the first lower part 2 of the first coil is located at the so-called "front" face of the casing 3 which is located substantially in line with the support zone 19 on the ground while the reservoir 1 is located near the the so-called “rear” face of the casing 3, which is substantially in line with the casters 5 and the upper handle 1.
  • the first lower part 2 of the first coil is located on the contrary at the "rear" face of the casing 3 while the reservoir 1 is located near the "front” face of the casing. 3.
  • the invention is not limited to the number of coils and the relative positioning of the latter described above.
  • the structure of the device and in particular the base 4 and the arrangement of the heating circuits and the reservoir 1 within it ensures an optimal balance of the device on its wheels 5 and in particular an optimal positioning of the center of gravity of all.
  • the rolling device has great maneuverability which is characterized by a low feeling in terms of weight during its strolling (the center of gravity is relatively close to the wheels 5).
  • the equilibrium obtained greatly limits the risks of rollover reversal of the whole.
  • the device may also typically include an oxygen flow control system delivered to the user comprising a button 18 for maneuvering.
  • the knob 18 for adjusting the delivery rate is disposed in the upper part of the housing 3 and is therefore perfectly oriented and positioned for use in sitting or standing position of the user.
  • the casing 3 or hood comprises ventilation openings necessary for the good ventilation of the heaters 2, 12.
  • the ventilation openings (not shown in the figures) are preferably located in the rear zone of the casing 3, that is, that is to say the opposite of the front zone likely to suffer shocks during normal use and preferably over the entire length of the heaters.
  • the front zone of the casing 3 is preferably solid to guarantee its rigidity.
  • the filling circuit of the cryogenic reservoir 1 of the device conventionally comprises a fluidic connection member 14 such as a male or female filling terminal intended to be connected to a conjugate terminal (female / male) of a liquid oxygen reserve.
  • the fluidic connection member 14 is situated in the lower part of the device, more specifically in the lower part of the casing 3 designed to face the base 4 (see FIG. 7).
  • the fluidic connection member 14 (terminal) is shaped to be connected, in a filling direction D, to a complementary terminal of a liquid oxygen reserve. That is to say that to fill the transportable device, the user must press the latter against the reserve in the filling direction D, to allow the opening of the filling terminals.
  • the bottom of the notebook includes the terminal 14 connection and is supported from top to bottom on an upper surface of the fixed reserve.
  • the fluidic connection terminal 14 is oriented along this filling direction D (see in particular FIG. 7).
  • the portable device comprises a vent valve 20 adapted to connect the inside of the tank 1 with the outside.
  • the opening of the vent valve 20 makes it possible to release the pressurized gas from the tank 1 to the outside, which causes, by means of pressure equalization, the entry of liquid into the tank 1 coming from the reserve via the terminal 14 filling.
  • the opening and closing and closing of the vent valve 20 is performed by the user by means of a movable control member manually operable.
  • control member of the vent valve 20 is shaped relative to the housing and / or relative to the vent valve 20 so that, in its movement from the closed position to the opening position, the control member describes a movement having at least one component or a force oriented substantially towards the interior of the housing and / or in the filling direction D.
  • this movement of the control member generates a force on the device oriented mainly towards the inside of the housing and / or in the filling direction D. That is to say, a large and preferably majority fraction of the opening force of the vent valve is oriented in the direction of an opening of the filling terminal.
  • This kinematics greatly simplifies the gestures and the coordination of the movements of the user during the filling operation of the mobile phone because the opening of the vent valve 20 also contributes to keeping the mobile phone on reserve in the direction D of the mobile phone. opening of the filling terminal.
  • the actuator may be connected to the vent valve via a motion transmission system which may contribute or provide a force to the interior of the housing and / or the filling direction D.
  • Figure 10 illustrates an exemplary actuator member of the vent valve. In Figure 10 only a portion (central) of the housing 3 is shown schematically
  • the control member of the vent valve 20 comprises a lever 21 which can be articulated relative to the casing 3.
  • the lever 21 can also be movable in translation or not relative to the casing 3.
  • the lever 21 can be articulated about an axis 23 of articulation, the lever 21 being moreover connected to the control axis 24 of the opening / closing of the vent valve 20.
  • the control pin 24 is, for example, integral with a valve 124 intended to cooperate with a seat 224 of the valve 20 for closing or opening a fluid passage between an inlet 324 and an outlet 524.
  • the control shaft 24 of the vent valve 20 is for example movable in translation inside a tubular sleeve 424 fixed to the valve 20 and thus fixed relative to the casing 3.
  • the joint axis 23 common the lever 21 and the control shaft 24 can thus be free in translation with said axis 24.
  • the lever 21 has a cam profile 123 adapted to cooperate with one end of the sleeve 424. In this way, the rotation of the lever 21 about its hinge axis 23 generates a translation of the control shaft 24 in the direction of an opening or closing of the valve, depending on the direction of rotation of the lever 21.
  • lever 21 any other motion transmission system can be provided between the lever 21 and the valve 20.
  • the lever 21 could be articulated about a hinge axis 23 fixed relative to the housing 3.
  • a linkage system or equivalent can transform the rotational movement of the lever 21 into a translation movement of the valve 24, 124 of the vent valve 20.
  • hinge pin 23 and the control pin 24 are mechanically connected so that the pivoting of the lever 21 towards the inside of the casing 3 (arrow R FIG. 14) causes the valve 20 to open. vent (eg traction on the control shaft 24 integral with the valve 20).
  • the lower end of the lever 21 cooperate with a releasable locking system of the lever 21 and switchable between a position allowing the rotation of the lever 21 (for the opening of the vent valve 20) and a position preventing the rotation of the lever 21 (in the closed position of the valve 20).
  • the lower end 29 of the lever 21 is integral with a head 2121 comprising an L-shaped groove 1221 whose main branch is oriented substantially towards the inside of the housing 3 and perpendicular to the vertical axis of the housing 3
  • the foot of the L formed by the groove 1221 (secondary branch) is meanwhile substantially perpendicular to the main branch of L.
  • a stop 30 secured to the casing 3 or a fixed part is housed movably in the groove 1221 of the head 121 of the end of the lever 21.
  • the stop 30 When the stop 30 is located in the secondary branch of the groove 1221 it blocks the displacement the lower end 29 of the lever 21 in the direction R of the opening of the valve 20 ( Figure 13).
  • the stop 30 when the stop 30 is moved in the main branch of the groove 1221, it allows limited rotation of the lever 21 (the head 2121 can slide around the abutment 30 along the main branch).
  • the stop 30 can be connected to a gripping portion 31 projecting from the casing 3 to be actuated by the user (for example in translation along a direction T parallel to the secondary branch 1221 of the groove, see FIG. 17).
  • at least one return element such a spring is provided to solicit by default the stop 30 in the locking position of the rotation of the lever 21.
  • Figures 18 and 19 illustrate an alternative embodiment of the control member of the vent valve 20. More specifically, the pivoting lever 21 of Figures 9 to 17 is replaced by a sleeve 121 sliding around at least a portion (preferably central) of the casing 3 between a high closing position of the vent valve 20 and a low opening position of the valve 20.
  • the sleeve 121 may be formed for example of a movable portion of the casing 3 or of a patch on it.
  • the sleeve is connected, for example via an axis and / or a hinge system 25 to the axis of the valve 20.
  • the device preferably comprises a biasing element urging the sleeve 121 to its upper position.
  • the actuating member of the vent valve 20 is ideally integrated into a gripping zone of the device during its filling. Indeed, to open the vent valve, the user can clasp with both hands the device naturally pressing the lever 21 (or the sleeve 121). This opening movement of the vent valve 20 coincides with the support movement of the device on the reserve in order to open the filling terminals 14 (in the filling direction D).
  • Figure 20 illustrates yet another alternative embodiment of the control member of the vent valve wherein the pivoting lever of Figures 9 to 16 is replaced by a button 221 adapted to be moved in translation by depression.
  • the button 221 is integral with an axis 26 connected to the vent valve 2 via a crank-handle-type motion transmission mechanism (link 27 articulation 28).
  • the mechanism for transmitting motion transforms a translation movement of the button 221 towards the inside of the casing 3 in an opening movement of the valve 20.
  • the valve 2 is of the opening type by the rotation of the valve 20. one axis (quarter turn per example).
  • the button 221 is integrated in the housing 3 or cover and can be forced to its open position of the valve 20 by a spring 33. Alternatively the action of the spring 33 can be replaced by the action of automatic return of the valve 20.
  • the button 221 is preferably located in the upper part and / or on the side of the casing 3. In this way, the pressing force on the button 221 generates a force on the device in the filling direction D which contributes to the opening of the charging terminals 14.
  • FIG. 21 illustrates yet another alternative embodiment of the control member of the vent valve which differs from the embodiment of FIG. 9 in that the pivoting lever 21 is articulated at its lower end (axis 200), the lever 21 being operated by its upper end.
  • the lever 21 in the rest position (closed vent valve), the lever 21 substantially matches the surface of the housing 3.
  • the upper end of the lever 21 can cooperate by elastic deformation (clip) or the like with the housing 3 to form a position stable rest.
  • the user pulls the upper end of the lever 21 towards the outside of the casing 3 and pivots it downwards in the filling direction D (rotation R FIG. 21).
  • the lever 21 protrudes substantially perpendicular to the surface of the casing 3.
  • the opening of the valve Vent 20 is explicitly indicated by the protruding lever. This further reduces the risk of accidental opening or forgetting the closure of the vent valve 20 because the user realizes immediately.
  • the actuating member of the vent valve 20 is preferably integrated with the surface of the casing 3 so as to make little or no projection in the rest position. (valve 20 closed). In this way, accidental openings of the vent valve are avoided.
  • the casing 3 or the device as a whole may be covered with a removable protective system, for example made of textile material.
  • This protection system may be equipped with storage areas for cannulas or any other object with a central handle 13 may be disposed near the opening member 21 of the vent valve 2 to provide, in the same area, the porting, level measurement and vent valve opening capabilities.

Abstract

The device has a case (3) containing a cryogenic tank, and a heating circuit with coils to heat/vaporize the oxygen from the tank to supply the oxygen to a respiratory system. A tank filling circuit has a fluidic connection terminal e.g. male/female filling terminal, connected to a complementary terminal of the device. A lever (21) controls a vent valve connected to the tank. The lever following a movement has a component oriented towards the interior of the case and in a filling direction (D) during displacement of the lever from a valve closing position to a valve opening position.

Description

La présente invention concerne un dispositif transportable de stockage et de délivrance d'oxygène.The present invention relates to a transportable device for storing and delivering oxygen.

L'invention concerne plus particulièrement un dispositif transportable de stockage et de délivrance d'oxygène comprenant un carter contenant un réservoir cryogénique destiné à contenir de l'oxygène liquide, un circuit de réchauffage raccordé au réservoir comprenant au moins un organe de réchauffage/vaporisation de l'oxygène provenant du réservoir en vue de sa fourniture à un utilisateur, un circuit de remplissage du réservoir cryogénique comprenant un organe de connexion fluidique tel qu'une borne de remplissage mâle ou femelle prévue pour être connectée, selon une direction de remplissage, à une borne complémentaire d'une réserve d'oxygène liquide, une vanne d'évent reliée à l'intérieur du réservoir, un organe mobile de commande de la vanne d'évent actionnable manuellement, l'organe de commande étant déplaçable relativement au carter pour actionner la vanne d'évent via un système de transmission de mouvement entre des positions de fermeture et d'ouverture de ladite vanne.The invention relates more particularly to a transportable oxygen storage and delivery device comprising a housing containing a cryogenic tank intended to contain liquid oxygen, a heating circuit connected to the tank comprising at least one heating / vaporization member of oxygen from the reservoir for supply to a user, a filling circuit of the cryogenic tank comprising a fluidic connection member such as a male or female filling terminal adapted to be connected, in a filling direction, to a terminal complementary to a liquid oxygen reserve, a vent valve connected to the interior of the tank, a movable control member of the manually operable vent valve, the control member being movable relative to the housing for actuate the vent valve via a motion transmission system between closed and open positions opening of said valve.

De tels dispositifs transportables de stockage et de délivrance d'oxygène sont généralement portés par les utilisateurs au moyen d'une sangle ou d'une bandoulière. Ces dispositifs appelés généralement « réserve d'oxygène portable» sont destinés à être reliés au système respiratoire du patient, par exemple au moyen d'une lunette connectable aux narines du patient. Ces dispositifs portables doivent ainsi accompagner l'utilisateur dans ses déplacements de sa vie quotidienne.Such portable oxygen storage and delivery devices are generally worn by the users by means of a strap or shoulder strap. These devices generally called "portable oxygen reserve" are intended to be connected to the respiratory system of the patient, for example by means of a telescope connectable to the nostrils of the patient. These portable devices must thus accompany the user in his movements of his daily life.

Lorsque le dispositif portable est vide, l'utilisateur le remplit en le connectant à une réserve fixe ayant une capacité de stockage d'oxygène liquide plus importante. Un tel système à réservoir de stockage et réservoir portable est décrit dans le document US 4,211,086 .When the portable device is empty, the user fills it by connecting it to a fixed reserve having a larger liquid oxygen storage capacity. Such a storage tank system and portable tank is described in the document US 4,211,086 .

Classiquement, l'ouverture de la vanne d'évent est commandée manuellement par un levier pivotant positionné en partie inférieure du portable. Pour réaliser le remplissage du portable, l'utilisateur doit simultanément appuyer le portable sur la réserve pour provoquer l'ouverture de la borne de remplissage et tirer le levier de commande de la vanne d'évent. Cette combinaison d'opérations est cependant relativement difficile pour un tel patient car elle nécessite une coordination de deux mouvements distincts avec des efforts relativement importants. De plus, du fait de l'agencement peu pratique de l'organe de commande de la vanne, l'utilisateur a souvent tendance à exercer une force démesurée sur l'organe d'actionnement de la vanne. Ceci provoque fréquemment une déformation de l'axe de la vanne d'évent et donc une diminution de la durée de vie de ladite vanne.Conventionally, the opening of the vent valve is manually controlled by a pivoting lever positioned at the bottom of the notebook. To fill the laptop, the user must simultaneously press the laptop on the reserve to cause the opening of the filling terminal and pull the control lever of the vent valve. This combination of operations, however, is relatively difficult for such a patient because it requires coordination of two separate movements with relatively large efforts. In addition, because of the inconvenient arrangement of the control member of the valve, the user often tends to exert excessive force on the actuator member of the valve. This frequently causes a deformation of the axis of the vent valve and therefore a decrease in the life of said valve.

De plus, les systèmes connus sont en général peu adaptés en terme d'ergonomie et de maniabilité pour des patients atteints d'insuffisance respiratoire et en particulier pour les personnes âgées. La masse de ces systèmes portables excède en général 1,5 kg ce qui peut être une charge très importante pour ces patients.In addition, the known systems are generally unsuitable in terms of ergonomics and maneuverability for patients with respiratory failure and in particular for the elderly. The mass of these portable systems generally exceeds 1.5 kg which can be a very important load for these patients.

Un but de l'invention est de proposer palliant tout ou partie des inconvénients de l'art antérieur.An object of the invention is to propose overcoming all or part of the disadvantages of the prior art.

Ce but est atteint par le fait que le dispositif transportable de stockage et de délivrance d'oxygène conforme au préambule ci-dessus, est essentiellement caractérisé en ce que dans son déplacement de la position de fermeture vers la position d'ouverture, l'organe de commande décrit un mouvement ayant au moins une composante orientée sensiblement vers l'intérieur du carter et/ou dans la direction de remplissage.This object is achieved by the fact that the transportable storage and oxygen delivery device according to the above preamble is essentially characterized in that in its movement from the closed position to the open position, the organ control unit describes a movement having at least one component oriented substantially inwardly of the housing and / or in the filling direction.

Par ailleurs, l'invention peut comporter l'une ou plusieurs des caractéristiques suivantes :

  • dans son actionnement de la position de fermeture vers la position d'ouverture, l'organe de commande et/ou le système de transmission de mouvement génère un effort sur le dispositif ayant au moins une composante orientée dans la direction de remplissage,
  • dans son déplacement de la position d'ouverture vers la position de fermeture, l'organe de commande décrit un mouvement orienté sensiblement vers l'extérieur du carter et/ou à l'opposé de la direction de remplissage,
  • l'organe de commande est mobile en rotation et/ou en translation relativement au carter,
  • l'organe de commande comporte un levier articulé relativement au carter,
  • l'organe de commande comporte un levier articulé relativement au carter,
  • le levier est articulé relativement au carter au niveau d'une première extrémité et comporte une seconde extrémité libre,
  • le levier est relié à la vanne d'évent par un système de transmission de mouvement de façon à former un bras de levier d'actionnement de ladite vanne lors de la rotation du levier,
  • le dispositif comporte un élément de blocage amovible du levier déplaçable entre une position autorisant la rotation du levier et une position empêchant la rotation du levier,
  • l'élément de blocage amovible du levier comprend une butée mobile relativement au carter apte à coopérer ou non avec la seconde extrémité du levier, la butée mobile étant reliée à une portion de préhension,
  • le dispositif comporte un organe de rappel sollicitant les moyens de blocage du levier vers la position empêchant la rotation du levier,
  • l'organe de commande comporte un manchon apte à coulisser autour d'au moins une partie du carter entre des positions haute et basse correspondant respectivement à une fermeture et une ouverture de la vanne d'évent, les positions hautes et basse étant définies relativement aux parties supérieure et inférieure du carter, le dispositif comportant en outre un organe de rappel sollicitant le manchon vers sa position haute,
  • le carter comporte au moins une portion évasée en direction de sa partie inférieure et en ce que l'organe de commande est situé au moins partiellement au niveau de la portion évasée,
  • l'organe de connexion fluidique est situé dans la partie inférieure du dispositif,
  • l'organe de connexion fluidique est située dans la partie inférieure du carter destinée à venir en vis-à-vis du socle,
  • l'organe de connexion fluidique formant borne de remplissage du réservoir est orientée selon la direction de remplissage,
  • l'axe d'articulation du levier est sensiblement perpendiculaire à l'axe vertical du dispositif,
  • les première et seconde extrémités du levier sont situées à des hauteurs différentes selon l'axe vertical du dispositif,
  • la première extrémité du levier est située au-dessus de la seconde extrémité du levier par rapport aux extrémités supérieure et inférieure du carter,
  • le levier est articulé au niveau de son extrémité inférieure pour autoriser un pivotement du levier vers l'extérieur du carter vers la direction de remplissage,
  • le dispositif comporte une seconde poignée de manutention qui coïncide au moins partiellement avec la zone du carter comprenant l'organe de commande de la vanne d'évent,
  • la seconde poignée de manutention a une structure mobile entre position rétractée et une position déployée et des moyens de rappel sollicitant la poignée vers sa position rétractée,
  • l'organe de commande comporte un bouton mobile en translation relativement au carter,
  • le dispositif comporte un socle muni d'au moins un organe roulant pour permettre le déplacement par roulage du dispositif, le socle et le carter comprenant des organes d'accrochage conjugués déplaçables entre une position active de verrouillage du carter sur le socle et une position inactive de désolidarisation du carter relativement au socle,
  • les organes d'accrochages conjugués formés respectivement sur le socle et le carter comprennent un système à pièce mobile et logement formant butée pour ladite pièce mobile, la pièce mobile étant déplaçable entre une position de coopération avec le logement et une position escamotée de non-coopération avec le logement,
  • le dispositif comporte un organe de commande couplé aux organes d'accrochages, l'organe de commande étant déplaçable entre une première position sollicitant les organes d'accrochages conjugués en position active de verrouillage du carter sur le socle et une seconde position sollicitant les organes d'accrochages conjugués en position inactive de désolidarisation du carter relativement au socle,
  • le dispositif comporte un élément de rappel sollicitant l'organe de commande vers sa première position,
  • l'organe de commande comprend un bouton ou une pédale,
  • l'organe de commande situé au niveau du socle,
  • l'organe de commande est relié mécaniquement à au moins une partie des organes d'accrochages,
  • les organes d'accrochages conjugués comprennent au moins un crochet mobile solidaire du socle et un logement conjugué formé dans la partie inférieure du carter,
  • les organes d'accrochages conjugués comprennent un premier crochet mobile et un second crochet fixe solidaires du socle et deux logements conjugués formé dans la partie inférieure du carter et destinés à coopérer respectivement avec les deux crochets,
  • la partie inférieure du carter comprend au moins une ouverture, la surface supérieure du socle présentant un volume concave formant une zone de recueil des condensas générés par le ou les organes de réchauffage/vaporisation de l'oxygène,
  • le socle comporte une zone d'appui apte à reposer sur le sol et la portion du socle destinée à accueillir le carter étant située sensiblement entre la zone d'appui et la portion du socle pourvu de l'organe roulant de façon à permettre d'une part le maintien stable du dispositif sur la zone d'appui et l'organe roulant et, d'autre part, le pivotement et le roulage du dispositif sur l'organe roulant,
  • le réservoir et un premier organe de réchauffage/vaporisation sont disposés dans la partie inférieure du carter, un second organe de réchauffage/vaporisation état disposé dans la partie supérieure du carter au dessus du réservoir et du premier organe de réchauffage/vaporisation,
  • l'organe de commande du système d'accrochage est solidaire de la pièce mobile,
  • l'organe roulant comprend deux roues ou roulettes parallèles montées sur un axe commun,
  • la zone de recueil des condensas comprend un élément d'absorption d'humidité telle qu'une feutrine interchangeable,
  • le dispositif comporte un système de réglage du débit d'oxygène délivré par le dispositif comprenant un bouton de manoeuvre disposé dans la partie supérieure du carter,
  • le dispositif comporte un système de mesure et d'affichage du niveau de fluide contenu dans le réservoir, l'affichage du niveau étant localisé sensiblement dans la partie médiane du carter,
  • le dispositif comporte une première poignée de manutention située dans la partie supérieure du carter,
  • la première poignée de manutention est solidaire d'au moins un axe apte à être déployé ou rétracté relativement au carter via un mécanisme de tel qu'un mécanisme à coulissement télescopique.
In addition, the invention may include one or more of the following features:
  • in its actuation from the closed position to the open position, the control member and / or the motion transmission system generates a force on the device having at least one component oriented in the direction of filling,
  • in its movement from the open position to the closed position, the control member describes a movement oriented substantially towards the outside of the housing and / or opposite the direction of filling,
  • the control member is movable in rotation and / or in translation relative to the housing,
  • the control member comprises a lever articulated relative to the housing,
  • the control member comprises a lever articulated relative to the housing,
  • the lever is hinged relative to the housing at a first end and has a second free end,
  • the lever is connected to the vent valve by a motion transmission system so as to form a lever arm for actuating said valve during the rotation of the lever,
  • the device comprises a removable locking member of the lever movable between a position allowing the rotation of the lever and a position preventing the rotation of the lever,
  • the detachable locking element of the lever comprises a stop movable relative to the housing adapted to cooperate or not with the second end of the lever, the movable stop being connected to a gripping portion,
  • the device comprises a return member urging the lever locking means to the position preventing rotation of the lever,
  • the control member comprises a sleeve able to slide around at least a portion of the casing between high and low positions respectively corresponding to a closing and an opening of the vent valve, the high and low positions being defined relative to the upper and lower parts of the casing, the device further comprising a return member biasing the sleeve towards its upper position,
  • the casing has at least one flared portion towards its lower part and in that the control member is located at least partially at the level of the flared portion,
  • the fluidic connection member is located in the lower part of the device,
  • the fluidic connection member is located in the lower part of the casing intended to come opposite the base,
  • the fluidic connection member forming the filling terminal of the reservoir is oriented in the direction of filling,
  • the axis of articulation of the lever is substantially perpendicular to the vertical axis of the device,
  • the first and second ends of the lever are located at different heights along the vertical axis of the device,
  • the first end of the lever is located above the second end of the lever relative to the upper and lower ends of the housing,
  • the lever is articulated at its lower end to allow pivoting of the lever towards the outside of the housing towards the direction of filling,
  • the device comprises a second handling handle which coincides at least partially with the zone of the casing comprising the control member of the vent valve,
  • the second handling handle has a movable structure between the retracted position and an extended position and biasing means biasing the handle towards its retracted position,
  • the control member comprises a button movable in translation relative to the housing,
  • the device comprises a base provided with at least one rolling member to enable rolling movement of the device, the base and the housing comprising mating fastening members movable between an active position of locking the housing on the base and an inoperative position detaching the housing relative to the base,
  • the conjugated catch members respectively formed on the base and the casing comprise a moving part system and abutment housing for said movable part, the movable part being movable between a position of cooperation with the housing and a retracted position of non-cooperation with housing,
  • the device comprises a control member coupled to the clipping members, the control member being movable between a first position biasing the conjugate clipping members in the active position of locking the casing on the base and a second position urging the organs d conjugated clashes in the inactive position of separation of the casing relative to the base,
  • the device comprises a return element urging the control member towards its first position,
  • the control member comprises a button or a pedal,
  • the control member located at the base,
  • the control member is mechanically connected to at least a part of the clipping members,
  • the conjugated clipping members comprise at least one mobile hook integral with the base and a conjugate housing formed in the lower part of the housing,
  • the conjugated clipping members comprise a first movable hook and a second fixed hook integral with the base and two conjugate housings formed in the lower part of the housing and intended to cooperate respectively with the two hooks,
  • the lower part of the casing comprises at least one opening, the upper surface of the base having a concave volume forming a zone for collecting the condensas generated by the oxygen reheating / vaporization member,
  • the base comprises a bearing zone adapted to rest on the ground and the portion of the base intended to receive the housing being located substantially between the support zone and the portion of the base provided with the rolling member so as to allow one hand the stable maintenance of the device on the support zone and the rolling member and, secondly, the pivoting and rolling of the device on the rolling member,
  • the tank and a first heating / vaporization member are arranged in the lower part of the casing, a second state heating / vaporization member disposed in the upper part of the casing above the tank and the first heating / vaporizing member,
  • the control member of the fastening system is integral with the moving part,
  • the rolling member comprises two wheels or parallel wheels mounted on a common axis,
  • the condensate collection zone comprises a moisture absorbing element such as an interchangeable felt,
  • the device comprises an oxygen flow control system delivered by the device comprising an operating button disposed in the upper part of the housing,
  • the device comprises a system for measuring and displaying the fluid level contained in the reservoir, the level display being located substantially in the middle part of the housing,
  • the device comprises a first handling handle located in the upper part of the housing,
  • the first handle is secured to at least one axis adapted to be deployed or retracted relative to the housing via a mechanism such as a telescopic sliding mechanism.

D'autres particularités et avantages apparaîtront à la lecture de la description ci-après, faite en référence aux figures dans lesquelles :

  • la figure 1 représente une vue en perspective d'un dispositif transportable de stockage et de délivrance d'oxygène selon un exemple de réalisation de l'invention en position connectée sur son socle roulant et avec une poignée supérieure déployée,
  • la figure 2 représente une vue de côté du dispositif de la figure 1, la poignée supérieure étant rétractée,
  • la figure 3 représente une vue de côté du dispositif de la figure 1 en position désengagée de son socle roulant,
  • les figures 4 et 5 représentent respectivement des vues de côté et en perspective illustrant la partie socle roulant du dispositif de la figure 1,
  • la figure 6 représente une vue schématique de côté du dispositif de la figure 1 selon un autre exemple d'agencement des éléments de stockage et de réchauffage du fluide cryogénique à l'intérieur du dispositif,
  • la figure 7 représente une vue agrandie d'un détail du dispositif de la figure 1, illustrant la liaison entre la base du dispositif et son socle roulant,
  • la figure 8 représente une vue agrandie d'un détail du dispositif de la figure 6, illustrant la poignée de préhension télescopique supérieure,
  • la figure 9 illustre un détail du dispositif de stockage et de délivrance d'oxygène selon l'invention illustrant schématiquement une partie de son carter extérieur dans une autre forme de réalisation,
  • la figure 10 représente une vue en coupe verticale et de côté du carter de la figure 9 illustrant un mécanisme de levier de commande de la vanne d'évent du dispositif en position verrouillée de repos (vanne d'évent fermée),
  • la figure 11 représente une vue agrandie d'un détail A de la figure 10 illustrant un mécanisme de blocage amovible du levier en position de repos,
  • les figures 12 et 13 représentent des vues en perspective du carter correspondant respectivement aux figures 10 et 11,
  • les figures 14 et 15 représentent des vues du carter analogues respectivement aux figures 10 et 11, dans lesquelles le mécanisme de levier de commande de la vanne d'évent est en position déverrouillée et le levier en déplacement vers sa position de travail (vers une ouverture de la vanne d'évent),
  • les figures 16 et 17 représentent des vues en perspective correspondant respectivement aux figures 14 et 15,
  • les figures 18 et 19 représentent schématiquement un détail du dispositif transportable de stockage et de délivrance d'oxygène illustrant un second exemple de réalisation du mécanisme de commande de la vanne d'évent, respectivement en position de fermeture et d'ouverture de ladite vanne d'évent,
  • la figure 20 représente schématiquement un détail du dispositif transportable de stockage et de délivrance d'oxygène illustrant un troisième exemple de réalisation du mécanisme de commande de la vanne d'évent,
  • la figure 21 représente une vue en perspective de la partie centrale d'un dispositif transportable de stockage et de délivrance d'oxygène illustrant un quatrième exemple de réalisation du mécanisme de commande de la vanne d'évent,
  • la figure 22 représente une vue de côté d'un détail du dispositif illustrant schématiquement un exemple de commande de la vanne d'évent via un levier articulé.
Other particularities and advantages will appear on reading the following description, made with reference to the figures in which:
  • FIG. 1 represents a perspective view of a transportable oxygen storage and delivery device according to an exemplary embodiment of the invention in a position connected to its rolling base and with an extended upper handle,
  • FIG. 2 represents a side view of the device of FIG. 1, the upper handle being retracted,
  • FIG. 3 represents a side view of the device of FIG. 1 in the disengaged position of its rolling base,
  • FIGS. 4 and 5 respectively show side and perspective views illustrating the rolling base portion of the device of FIG. 1,
  • FIG. 6 is a diagrammatic side view of the device of FIG. 1 according to another exemplary arrangement of elements for storing and heating the cryogenic fluid inside the device,
  • FIG. 7 represents an enlarged view of a detail of the device of FIG. 1, illustrating the connection between the base of the device and its rolling base,
  • FIG. 8 represents an enlarged view of a detail of the device of FIG. 6, illustrating the upper telescopic gripping handle,
  • FIG. 9 illustrates a detail of the oxygen storage and delivery device according to the invention schematically illustrating a part of its outer casing in another embodiment,
  • FIG. 10 represents a vertical and side sectional view of the casing of FIG. 9 illustrating a control lever mechanism of the device vent valve in the locked rest position (closed vent valve),
  • FIG. 11 represents an enlarged view of a detail A of FIG. 10 illustrating a mechanism for releasably locking the lever in the rest position,
  • FIGS. 12 and 13 show perspective views of the casing corresponding respectively to FIGS. 10 and 11,
  • FIGS. 14 and 15 show views of the casing similar to FIGS. 10 and 11, respectively, in which the control lever mechanism of the vent valve is in the unlocked position and the lever is moving towards its working position (towards an opening the vent valve),
  • FIGS. 16 and 17 show perspective views respectively corresponding to FIGS. 14 and 15,
  • FIGS. 18 and 19 diagrammatically show a detail of the transportable storage and oxygen delivery device illustrating a second embodiment of the control mechanism of the vent valve, respectively in the closed and open position of said valve, vent,
  • FIG. 20 schematically represents a detail of the transportable storage and oxygen delivery device illustrating a third embodiment of the control mechanism of the vent valve,
  • FIG. 21 represents a perspective view of the central portion of a transportable oxygen storage and delivery device illustrating a fourth embodiment of the control mechanism of the vent valve,
  • Figure 22 shows a side view of a detail of the device schematically illustrating an example of control of the vent valve via an articulated lever.

En se référant à présent aux figures 1 et 2, le dispositif transportable de stockage et de délivrance d'oxygène comprend un carter 3 de forme générale oblongue se resserrant vers son extrémité supérieure. Le carter 3 contient un réservoir 1 cryogénique destiné à contenir de l'oxygène liquide (en équilibre avec de la vapeur).Referring now to FIGS. 1 and 2, the transportable oxygen storage and delivery device comprises a casing 3 of generally oblong shape that tapers towards its upper end. The housing 3 contains a cryogenic tank 1 for containing liquid oxygen (in equilibrium with steam).

Le carter 3 abrite également un circuit de réchauffage raccordé au réservoir 1 (non représenté en détail car connu en soi) comprenant dans cet exemple deux serpentins 2, 12 de réchauffage/vaporisation de l'oxygène provenant du réservoir 1 en vue de sa fourniture à un utilisateur (via une lunette par exemple).The housing 3 also houses a heating circuit connected to the tank 1 (not shown in detail because known per se) comprising in this example two coils 2, 12 for heating / vaporization of oxygen from the tank 1 for its supply to a user (via a telescope for example).

La base inférieure du carter 3 est rendue solidaire de façon amovible d'un socle 4 muni de roulettes 5 permettant ainsi le déplacement par roulage du dispositif.The lower base of the casing 3 is removably secured to a base 4 provided with rollers 5 thus allowing the rolling movement of the device.

Avantageusement, le dispositif peut comporter une première poignée 11 de manutention située de préférence dans la partie supérieure du carter 3. De préférence également et comme visible aux figures 1, 2 et 8, la première poignée 11 de manutention est solidaire d'au moins un axe 120 ou tige apte à être déployé ou rétracté relativement au carter 3, par exemple via un mécanisme à coulissement télescopique ou analogue qui peut être logé dans le carter 3. De cette façon, la poignée supérieure 11 peut être équipée d'un moyen de réglage de sa hauteur, en fonction de la taille du patient. De préférence l'axe 120 a une section rectangulaire, carrée ou analogue non circulaire coopérant avec un guide complémentaire. De cette façon, l'alignement de la poignée 11 par rapport au carter 3 est assuré. De plus, une telle géométrie d'axe 120 rétractable facilite l'opération de roulage en empêchant notamment une torsion de l'axe 120 selon sa longueur.Advantageously, the device may comprise a first handle 11 preferably located in the upper part of the housing 3. Also preferably and as visible in Figures 1, 2 and 8, the first handling handle 11 is integral with at least one axis 120 or rod adapted to be deployed or retracted relative to the housing 3, for example via a telescopic sliding mechanism or the like which can be housed in the housing 3. In this way, the upper handle 11 can be equipped with a means of height adjustment, depending on the size of the patient. Preferably the axis 120 has a rectangular, square or similar non-circular section cooperating with a complementary guide. In this way, the alignment of the handle 11 relative to the housing 3 is ensured. In addition, such a retractable shaft 120 geometry facilitates the rolling operation by preventing in particular a torsion of the axis 120 along its length.

Dans sa partie médiane, le carter 3 peut comporter une seconde poignée 13 de manutention. Comme visible à la figure 10, la seconde poignée 13 de manutention peut avoir une structure mobile entre position rétractée et une position déployée et un organe 32 de rappel sollicitant la poignée 13 vers sa position rétractée. Par exemple la seconde poignée 13 comporte une sangle dont une extrémité (par exemple inférieure) est reliée à un système à ressort 32 situé dans la carter 3. Le système à ressort 32 assurant la tension et la rétractation d'au moins une partie de la sangle 13 dans le volume du carter 3 lorsqu'elle n'est pas utilisée pour porter le dispositif.In its middle part, the housing 3 may include a second handle 13 handling. As can be seen in FIG. 10, the second handling handle 13 may have a movable structure between the retracted position and an extended position and a return member 32 biasing the handle 13 towards its retracted position. For example the second handle 13 comprises a strap whose end (for example lower) is connected to a spring system 32 located in the housing 3. The spring system 32 ensuring the tension and the retraction of at least a part of the strap 13 in the housing volume 3 when not used to wear the device.

Ce système à ressort 32 peut être associé à un mécanisme de mesure de la masse du dispositif transportable lorsqu'il est sollicité. C'est-à-dire que lorsque l'utilisateur porte le dispositif par la sangle 13 déployable/rétractable, le ressort 32 est sollicité en fonction de la masse du dispositif. La mesure du niveau de liquide dans le réservoir 1 peut ainsi être corrélée à un moyen de mesure de la tension du ressort 32. Cette mesure traduit le niveau de liquide dans le réservoir 1. L'affichage 40 de ce niveau est localisé de préférence sensiblement dans la partie médiane ou inférieure du carter 3. L'agencement des masses dans le carter 3 (réservoir 1 et circuits 2 notamment) ainsi que la position de l'affichage 40 peut faciliter la lecture du niveau 40 par un basculement naturel de l'ensemble lorsque le dispositif est porté par la sangle 13. C'est-à-dire que la face du carter 3 pourvue de l'affichage 40 se trouve tournée vers le haut, vers l'utilisateur.This spring system 32 may be associated with a mechanism for measuring the mass of the transportable device when it is loaded. That is to say that when the user carries the device by the strap 13 deployable / retractable, the spring 32 is biased depending on the mass of the device. The measurement of the liquid level in the tank 1 can thus be correlated with a means of measuring the tension of the spring 32. This measurement reflects the level of liquid in the tank 1. The display 40 of this level is preferably located substantially in the middle or lower part of the casing 3. The arrangement of the masses in the casing 3 (Tank 1 and circuits 2 in particular) as well as the position of the display 40 can facilitate the reading of the level 40 by a natural rocking of the assembly when the device is carried by the strap 13. That is to say that the face of the housing 3 provided with the display 40 is turned upwards towards the user.

La seconde poignée 13 est parfaitement intégrée dans la zone médiane du carter 3, ce qui permet sa préhension en toute position du système.The second handle 13 is perfectly integrated in the central zone of the housing 3, which allows its gripping in any position of the system.

Selon une particularité avantageuse, le socle 4 roulant et carter 3 comprennent des organes d'accrochage 6, 16; 7, 17 conjugués permettant sélectivement le maintien du carter 3 sur le socle 4 ou leur séparation (cf. figures 2 à 5).According to an advantageous feature, the base 4 rolling and casing 3 comprise fastening members 6, 16; 7, 17 conjugates selectively allowing the maintenance of the housing 3 on the base 4 or their separation (see Figures 2 to 5).

Dans l'exemple de réalisation représenté aux figures 4 et 5 notamment, les organes d'accrochage conjugués comprennent un premier crochet 16 mobile en rotation et un second crochet fixe 6 solidaires du socle 4 et deux logements 7, 17 conjugués correspondants formés dans la partie inférieure du carter 3 et destinés à accueillir respectivement avec les deux crochets 6, 16 du socle.In the exemplary embodiment shown in FIGS. 4 and 5 in particular, the conjugate fastening members comprise a first hook 16 movable in rotation and a second fixed hook 6 integral with the base 4 and two corresponding housing 7, 17 corresponding formed in the part bottom of the housing 3 and intended to accommodate respectively with the two hooks 6, 16 of the base.

Plus précisément, le socle 4 a la forme générale d'un réceptacle concave ovoïde et ouvert vers le haut.More specifically, the base 4 has the general shape of an ovoid concave receptacle and open upwards.

La partie inférieure du carter 3 peut comporter au moins une ouverture destinée à venir en vis-à-vis de la surface supérieure concave du socle 4. De cette façon, la zone concave du socle 4 forme un volume 10 de recueil des condensas générés par le ou les organes 2, 12 de réchauffage/vaporisation de l'oxygène situés dans le carter 3. La zone 10 de recueil des condensas peut ainsi accueillir un élément 15 d'absorption d'humidité telle qu'une feutrine interchangeable. L'accessibilité de cette zone 10 de recueil est aisé et rapide ce qui facilite le changement régulier de la feutrine d'absorption d'humidité.The lower part of the casing 3 may comprise at least one opening intended to face the concave upper surface of the base 4. In this way, the concave zone of the base 4 forms a volume 10 for collecting the condensas generated by the oxygen reheating / vaporization member (s) 2, 12 located in the housing 3. The condensate collection zone (10) can thus accommodate a moisture absorbing element such as an interchangeable felt. The accessibility of this collection zone 10 is easy and fast which facilitates the regular change of the moisture absorption felt.

Les deux crochets 6, 16 sont situés respectivement à deux extrémités du socle 4 et ont leur extrémité d'accrochage tournées l'une vers l'autre.The two hooks 6, 16 are respectively located at two ends of the base 4 and have their hooking end facing towards each other.

Le socle 4 comporte un organe 8 de commande du crochet 16 mobile tel qu'une pédale articulée. Par exemple, la pédale 8 d'éjection du carter 3 est solidaire en rotation du crochet 16 mobile. Ainsi, lorsque l'utilisateur appui sur la pédale 8, il fait pivoter le crochet 16 mobile vers l'extérieur du carter 3 qui sort alors de son logement 17 du carter 3.The base 4 comprises a member 8 for controlling the mobile hook 16 such as an articulated pedal. For example, the pedal 8 ejection housing 3 is integral in rotation of the hook 16 mobile. Thus, when the user presses the pedal 8, he pivots the movable hook 16 towards the outside of the casing 3 which then leaves its housing 17 of the casing 3.

L'utilisateur peut ensuite désengager le carter 3 du socle 4 en le manipulant par la poignée supérieure 11. C'est à dire que les logements 7, 17 d'accrochage du carter 3 peuvent être dégagés des crochets 16 en faisant pivoter le carter 3 autour de sa partie inférieure.The user can then disengage the casing 3 from the base 4 by manipulating it by the upper handle 11. That is to say that the housings 7, 17 for catching the casing 3 can be disengaged from the hooks 16 by rotating the casing 3 around its lower part.

La déconnexion du carter 3 de son socle 4 peut ainsi être réalisée facilement nécessiter d'effort particulier de l'utilisateur (il n'est pas nécessaire de se courber). Libéré du socle le dispositif peut être connecté sur une réserve pour assurer son remplissage. De préférence, un élément de rappel 9 tel qu'un ressort sollicite la pédale vers sa première position de maintien du crochet 16 mobile en position de verrouillage du carter 3 sur le socle 4.The disconnection of the housing 3 of its base 4 can thus be achieved easily require special effort of the user (it is not necessary to bend). Released from the base the device can be connected to a reserve to ensure its filling. Preferably, a return element 9 such as a spring biases the pedal towards its first position for holding the hook 16 movable in the locking position of the casing 3 on the base 4.

Bien entendu, tout ou partie des crochets peuvent être formés sur le carter et les logements correspondants sur le socle 4. De même, tout autre système d'accrochage mâle/femelle peut être envisagé. En particulier, plusieurs crochets ou pênes mobiles ou analogues peuvent être prévus.Of course, all or part of the hooks can be formed on the housing and the corresponding housing on the base 4. Similarly, any other male / female hooking system can be considered. In particular, several hooks or mobile bolts or the like may be provided.

Comme visible aux figures 1 à 5, le socle 4 peut comporter une zone 19 d'appui apte à reposer sur le sol. De préférence la portion du socle 4 destinée à accueillir le carter 4 est située sensiblement entre la zone 19 d'appui et la portion du socle pourvu des roulettes 5. De cette façon, le dispositif peut être maintenu debout en position stable sur la zone d'appui 19 et les roulettes 5 et peut être incliné pour rouler uniquement sur les roulettes 5.As shown in Figures 1 to 5, the base 4 may include a support zone 19 adapted to rest on the ground. Preferably the portion of the base 4 intended to receive the housing 4 is located substantially between the support zone 19 and the portion of the base provided with the rollers 5. In this way, the device can be kept upright in a stable position on the zone d 19 and the casters 5 and can be inclined to roll only on the casters 5.

Le socle 4 comporte par exemple deux roues 5 ou roulettes parallèles montées sur un axe commun perpendiculaire à la direction de montage du carter 3 sur le socle 4.The base 4 comprises for example two wheels 5 or parallel wheels mounted on a common axis perpendicular to the mounting direction of the housing 3 on the base 4.

Bien entendu, tout autre système roulant peut être envisagé (billes ou analogue). De même, les roues peuvent être interchangeables et/ou escamotables en fonction des utilisations.Of course, any other rolling system may be envisaged (balls or the like). Similarly, the wheels can be interchangeable and / or retractable depending on the uses.

Dans l'exemple de réalisation des figures 2 et 3, le réservoir 1 d'oxygène et une première partie 2 d'un premier serpentin de réchauffage et vaporisation sont disposés dans la partie inférieure du carter 3 tandis que la seconde partie 12 du premier serpentin de réchauffage et vaporisation est disposée dans la partie supérieure du carter 3, au-dessus du réservoir 1. Un second serpentin 102 de réchauffage de la phase gazeuse est disposé concentriquement à l'intérieur de la seconde partie supérieure 12 du premier serpentin.In the embodiment of Figures 2 and 3, the oxygen tank 1 and a first portion 2 of a first heating coil and vaporization are arranged in the lower part of the housing 3 while the second portion 12 of the first coil In the upper part of the casing 3, above the tank 1, a heating and vaporization chamber is arranged. A second heating coil 102 for the gas phase is arranged concentrically inside the second upper part 12 of the first coil.

La première partie 2 inférieure du premier serpentin est située au niveau de la face dite « avant » du carter 3 qui est située sensiblement à l'aplomb de la zone 19 d'appui sur le sol tandis que le réservoir 1 est situé à proximité de la face dite « arrière » du carter 3, qui est sensiblement à l'aplomb des roulettes 5 et de la poignée 1 supérieure.The first lower part 2 of the first coil is located at the so-called "front" face of the casing 3 which is located substantially in line with the support zone 19 on the ground while the reservoir 1 is located near the the so-called "rear" face of the casing 3, which is substantially in line with the casters 5 and the upper handle 1.

Dans la variante de réalisation de la figure 6, la première partie 2 inférieure du premier serpentin est située au contraire au niveau de la face « arrière » du carter 3 tandis que le réservoir 1 est situé à proximité de la face « avant » du carter 3.In the variant embodiment of FIG. 6, the first lower part 2 of the first coil is located on the contrary at the "rear" face of the casing 3 while the reservoir 1 is located near the "front" face of the casing. 3.

Bien entendu, l'invention n'est pas limitée au nombre de serpentins et aux positionnements relatifs de ces derniers décrits ci-dessus.Of course, the invention is not limited to the number of coils and the relative positioning of the latter described above.

Dans tous les cas, la structure du dispositif et en particulier du socle 4 et l'agencement des circuits de réchauffage et du réservoir 1 en son sein assure un équilibre optimal du dispositif sur ses roues 5 et notamment un positionnement optimal du centre de gravité de l'ensemble. Le dispositif roulant présente une grande maniabilité qui se caractérise par un faible ressenti en terme de poids lors de sa déambulation (le centre de gravité est relativement proche des roues 5). L'équilibre obtenu limite fortement les risques de renversement par basculement de l'ensemble.In all cases, the structure of the device and in particular the base 4 and the arrangement of the heating circuits and the reservoir 1 within it ensures an optimal balance of the device on its wheels 5 and in particular an optimal positioning of the center of gravity of all. The rolling device has great maneuverability which is characterized by a low feeling in terms of weight during its strolling (the center of gravity is relatively close to the wheels 5). The equilibrium obtained greatly limits the risks of rollover reversal of the whole.

Le dispositif peut comprendre également classiquement un système de réglage du débit d'oxygène délivré à l'utilisateur comprenant un bouton 18 de manoeuvre. De préférence, le bouton 18 de manoeuvre de réglage du débit délivré est disposé dans la partie supérieure du carter 3 et est de ce fait parfaitement orienté et positionné pour une utilisation en position assise ou debout de l'utilisateur.The device may also typically include an oxygen flow control system delivered to the user comprising a button 18 for maneuvering. Preferably, the knob 18 for adjusting the delivery rate is disposed in the upper part of the housing 3 and is therefore perfectly oriented and positioned for use in sitting or standing position of the user.

Le carter 3 ou capot comprend des ouvertures d'aération nécessaires à la bonne ventilation des réchauffeurs 2, 12. Les ouvertures d'aération (non représentées sur les figures) sont située de préférence dans la zone arrière du carter 3, c'est-à-dire à l'opposé de la zone avant susceptible de subir des chocs lors d'une utilisation courante et de préférence sur toute la longueur des réchauffeurs. Pour cette raison, la zone avant du carter 3 est de préférence pleine pour garantir sa rigidité.The casing 3 or hood comprises ventilation openings necessary for the good ventilation of the heaters 2, 12. The ventilation openings (not shown in the figures) are preferably located in the rear zone of the casing 3, that is, that is to say the opposite of the front zone likely to suffer shocks during normal use and preferably over the entire length of the heaters. For this reason, the front zone of the casing 3 is preferably solid to guarantee its rigidity.

Le circuit de remplissage du réservoir 1 cryogénique du dispositif comporte classiquement un organe 14 de connexion fluidique tel qu'une borne de remplissage mâle ou femelle destiné à être reliée à une borne conjuguée (femelle/mâle) d'une réserve d'oxygène liquide. L'organe 14 de connexion fluidique est situé dans la partie inférieure du dispositif, plus précisément dans la partie inférieure du carter 3 destinée à venir en vis-à-vis du socle 4 (cf. figure 7).The filling circuit of the cryogenic reservoir 1 of the device conventionally comprises a fluidic connection member 14 such as a male or female filling terminal intended to be connected to a conjugate terminal (female / male) of a liquid oxygen reserve. The fluidic connection member 14 is situated in the lower part of the device, more specifically in the lower part of the casing 3 designed to face the base 4 (see FIG. 7).

Classiquement, l'organe 14 de connexion fluidique (borne) est conformé pour être connecté, selon une direction D de remplissage, à une borne complémentaire d'une réserve d'oxygène liquide. C'est à dire que pour remplir le dispositif transportable, l'utilisateur doit appuyer ce dernier contre la réserve selon la direction D de remplissage, pour permettre l'ouverture des bornes de remplissage. Par exemple, la partie inférieure du portable comprend la borne 14 de connexion et est appuyée de haut en bas sur une surface supérieure de la réserve fixe.Conventionally, the fluidic connection member 14 (terminal) is shaped to be connected, in a filling direction D, to a complementary terminal of a liquid oxygen reserve. That is to say that to fill the transportable device, the user must press the latter against the reserve in the filling direction D, to allow the opening of the filling terminals. For example, the bottom of the notebook includes the terminal 14 connection and is supported from top to bottom on an upper surface of the fixed reserve.

A cet effet, la borne 14 de connexion fluidique est orientée selon cette direction D de remplissage (cf. notamment figure 7).For this purpose, the fluidic connection terminal 14 is oriented along this filling direction D (see in particular FIG. 7).

Pour procéder au remplissage, l'utilisateur doit, simultanément à l'ouverture de la borne de remplissage (appui sur la réserve), ouvrir la vanne d'évent 20 du dispositif transportable. En effet, le dispositif portable comprend une vanne 20 d'évent apte à relier l'intérieur du réservoir 1 avec l'extérieur. L'ouverture de la vanne d'évent 20 permet de libérer vers l'extérieur du gaz sous pression du réservoir 1, ce qui provoque, par équilibrage de pression, l'entrée de liquide dans le réservoir 1 provenant de la réserve via la borne 14 de remplissage.To proceed with filling, the user must, simultaneously with the opening of the filling terminal (resting on the reserve), open the vent valve 20 of the transportable device. Indeed, the portable device comprises a vent valve 20 adapted to connect the inside of the tank 1 with the outside. The opening of the vent valve 20 makes it possible to release the pressurized gas from the tank 1 to the outside, which causes, by means of pressure equalization, the entry of liquid into the tank 1 coming from the reserve via the terminal 14 filling.

L'ouverture et la fermeture et la fermeture de la vanne d'évent 20 est réalisée par l'utilisateur au moyen d'un organe mobile de commande actionnable manuellement.The opening and closing and closing of the vent valve 20 is performed by the user by means of a movable control member manually operable.

Selon une particularité particulièrement avantageuse du dispositif, l'organe de commande de la vanne 20 d'évent est conformé relativement au carter et/ou relativement à la vanne d'évent 20 de façon que, dans son déplacement de la position de fermeture vers la position d'ouverture, l'organe de commande décrit un mouvement ayant au moins une composante ou un effort orienté sensiblement vers l'intérieur du carter et/ou dans la direction D de remplissage.According to a particularly advantageous feature of the device, the control member of the vent valve 20 is shaped relative to the housing and / or relative to the vent valve 20 so that, in its movement from the closed position to the opening position, the control member describes a movement having at least one component or a force oriented substantially towards the interior of the housing and / or in the filling direction D.

De préférence, ce mouvement de l'organe de commande génère un effort sur le dispositif orienté majoritairement vers l'intérieur du carter et/ou dans la direction D de remplissage. C'est-à-dire qu'une fraction importante et de préférence majoritaire de l'effort d'ouverture de la vanne 20 d'évent est orienté dans le sens d'une ouverture de la borne de remplissage.Preferably, this movement of the control member generates a force on the device oriented mainly towards the inside of the housing and / or in the filling direction D. That is to say, a large and preferably majority fraction of the opening force of the vent valve is oriented in the direction of an opening of the filling terminal.

Cette cinématique simplifie grandement la gestuelle et la coordination des mouvements de l'utilisateur lors de l'opération de remplissage du portable car l'ouverture de la vanne 20 d'évent concourt également au maintien du portable sur la réserve dans le sens D de l'ouverture de la borne de remplissage.This kinematics greatly simplifies the gestures and the coordination of the movements of the user during the filling operation of the mobile phone because the opening of the vent valve 20 also contributes to keeping the mobile phone on reserve in the direction D of the mobile phone. opening of the filling terminal.

L'organe d'actionnement peut être relié à la vanne 20 d'évent via un système de transmission de mouvement qui peut contribuer ou assurer un effort vers l'intérieur du carter et/ou dans la direction D de remplissage.The actuator may be connected to the vent valve via a motion transmission system which may contribute or provide a force to the interior of the housing and / or the filling direction D.

La figure 10 illustre un exemple d'organe d'actionnement de la vanne 20 d'évent. A la figure 10 seule une partie (centrale) du carter 3 est représentée schématiquementFigure 10 illustrates an exemplary actuator member of the vent valve. In Figure 10 only a portion (central) of the housing 3 is shown schematically

L'organe de commande de la vanne 20 d'évent comprend un levier 21 qui peut être articulé relativement au carter 3. Le levier 21 peut également être mobile en translation ou non relativement au carter 3.The control member of the vent valve 20 comprises a lever 21 which can be articulated relative to the casing 3. The lever 21 can also be movable in translation or not relative to the casing 3.

Plus précisément, le levier 21 peut être articulé autour d'un axe 23 d'articulation, le levier 21 étant par ailleurs relié à l'axe 24 de commande de l'ouverture/fermeture de la vanne 20 d'évent. Comme représenté à la figure 22, l'axe 24 de commande est par exemple solidaire d'un clapet 124 destiné à coopérer avec un siège 224 de la vanne 20 pour obturer ou ouvrir un passage de fluide entre une entrée 324 et une sortie 524.More precisely, the lever 21 can be articulated about an axis 23 of articulation, the lever 21 being moreover connected to the control axis 24 of the opening / closing of the vent valve 20. As shown in FIG. 22, the control pin 24 is, for example, integral with a valve 124 intended to cooperate with a seat 224 of the valve 20 for closing or opening a fluid passage between an inlet 324 and an outlet 524.

L'axe de commande 24 de la vanne 20 d'évent est par exemple mobile en translation à l'intérieur d'un manchon tubulaire 424 fixé à la vanne 20 et donc fixe relativement au carter 3. L'axe d'articulation 23 commun au levier 21 et à l'axe 24 de commande peut être ainsi être libre en translation avec ledit axe 24. Le levier 21 possède un profil de came 123 apte à coopérer avec une extrémité du manchon 424. De cette façon, la rotation du levier 21 autour de son axe 23 d'articulation génère une translation de l'axe 24 de commande dans le sens d'une ouverture ou d'une fermeture de la vanne, en fonction du sens de rotation du levier 21.The control shaft 24 of the vent valve 20 is for example movable in translation inside a tubular sleeve 424 fixed to the valve 20 and thus fixed relative to the casing 3. The joint axis 23 common the lever 21 and the control shaft 24 can thus be free in translation with said axis 24. The lever 21 has a cam profile 123 adapted to cooperate with one end of the sleeve 424. In this way, the rotation of the lever 21 about its hinge axis 23 generates a translation of the control shaft 24 in the direction of an opening or closing of the valve, depending on the direction of rotation of the lever 21.

Bien entendu, tout autre système de transmission de mouvement peut être prévu entre le levier 21 et la vanne 20. Par exemple, le levier 21 pourrait être articulé autour d'un axe d'articulation 23 fixe relativement au carter 3.Of course, any other motion transmission system can be provided between the lever 21 and the valve 20. For example, the lever 21 could be articulated about a hinge axis 23 fixed relative to the housing 3.

Un système à biellette ou équivalent peut transformer le mouvement de rotation du levier 21 en un mouvement de translation du clapet 24, 124 de la vanne d'évent 20.A linkage system or equivalent can transform the rotational movement of the lever 21 into a translation movement of the valve 24, 124 of the vent valve 20.

Plus précisément, l'axe d'articulation 23 et l'axe 24 de commande sont reliés mécaniquement de façon que le pivotement du levier 21 vers l'intérieur du carter 3 (flèche R figure 14) provoque une ouverture de la vanne 20 d'évent (par exemple traction sur l'axe 24 de commande solidaire de la vanne 20).More precisely, the hinge pin 23 and the control pin 24 are mechanically connected so that the pivoting of the lever 21 towards the inside of the casing 3 (arrow R FIG. 14) causes the valve 20 to open. vent (eg traction on the control shaft 24 integral with the valve 20).

Inversement, la rotation du levier 21 vers l'extérieur du carter 3 provoque la fermeture de la vanne 20.Conversely, the rotation of the lever 21 towards the outside of the casing 3 causes the closure of the valve 20.

L'extrémité inférieure du levier 21 coopèrent avec un système de blocage amovible du levier 21 et commutable entre une position autorisant la rotation du levier 21 (pour l'ouverture de la vanne d'évent 20) et une position empêchant la rotation du levier 21 (en position de fermeture de la vanne 20).The lower end of the lever 21 cooperate with a releasable locking system of the lever 21 and switchable between a position allowing the rotation of the lever 21 (for the opening of the vent valve 20) and a position preventing the rotation of the lever 21 (in the closed position of the valve 20).

Par exemple, l'extrémité inférieure 29 du levier 21 est solidaire d'une tête 2121 comprenant une rainure 1221 en forme de L dont la branche principale est orientée sensiblement vers l'intérieur du carter 3 et perpendiculairement à l'axe vertical du carter 3. Le pied du L formé par la rainure 1221 (branche secondaire) est quant à lui sensiblement perpendiculaire à la branche principale du L.For example, the lower end 29 of the lever 21 is integral with a head 2121 comprising an L-shaped groove 1221 whose main branch is oriented substantially towards the inside of the housing 3 and perpendicular to the vertical axis of the housing 3 The foot of the L formed by the groove 1221 (secondary branch) is meanwhile substantially perpendicular to the main branch of L.

Une butée 30 solidaire du carter 3 ou une partie fixe est logée de façon mobile dans la rainure 1221 de la tête 121 de l'extrémité du levier 21. Lorsque la butée 30 est située dans la branche secondaire de la rainure 1221 elle bloque le déplacement de l'extrémité inférieure 29 du levier 21 dans le sens R de l'ouverture de la vanne 20 (figure 13). En revanche, lorsque la butée 30 est déplacée dans la branche principale de la rainure 1221 elle permet une rotation limitée du levier 21 (la tête 2121 peut coulisser autour de la butée 30 le long de la branche principale). A cet effet, la butée 30 peut être reliée à une portion 31 de préhension faisant saillie du carter 3 pour être actionnée par l'utilisateur (par exemple en translation selon une direction T parallèle à la branche secondaire 1221 de la rainure, cf. figure 17). De préférence au moins un élément de rappel (non représenté) tel qu'un ressort est prévu pour solliciter par défaut la butée 30 en position de blocage de la rotation du levier 21.A stop 30 secured to the casing 3 or a fixed part is housed movably in the groove 1221 of the head 121 of the end of the lever 21. When the stop 30 is located in the secondary branch of the groove 1221 it blocks the displacement the lower end 29 of the lever 21 in the direction R of the opening of the valve 20 (Figure 13). On the other hand, when the stop 30 is moved in the main branch of the groove 1221, it allows limited rotation of the lever 21 (the head 2121 can slide around the abutment 30 along the main branch). For this purpose, the stop 30 can be connected to a gripping portion 31 projecting from the casing 3 to be actuated by the user (for example in translation along a direction T parallel to the secondary branch 1221 of the groove, see FIG. 17). Preferably at least one return element (not shown) such a spring is provided to solicit by default the stop 30 in the locking position of the rotation of the lever 21.

Les figures 18 et 19 illustrent une variante de réalisation de l'organe de commande de la vanne d'évent 20. Plus précisément, le levier pivotant 21 des figures 9 à 17 est remplacé par un manchon 121 coulissant autour d'un moins une partie (de préférence centrale) du carter 3 entre une position haute de fermeture de la vanne 20 d'évent et une position basse d'ouverture de la vanne 20. Le manchon 121 peut être formé par exemple d'une partie mobile du carter 3 ou d'une pièce rapportée sur ce dernier. Le manchon est relié, par exemple via un axe et/ou un système d'articulation 25 à l'axe de la vanne 20. Comme précédemment, le dispositif comporte de préférence un élément de rappel sollicitant le manchon 121 vers sa position haute.Figures 18 and 19 illustrate an alternative embodiment of the control member of the vent valve 20. More specifically, the pivoting lever 21 of Figures 9 to 17 is replaced by a sleeve 121 sliding around at least a portion (preferably central) of the casing 3 between a high closing position of the vent valve 20 and a low opening position of the valve 20. The sleeve 121 may be formed for example of a movable portion of the casing 3 or of a patch on it. The sleeve is connected, for example via an axis and / or a hinge system 25 to the axis of the valve 20. As before, the device preferably comprises a biasing element urging the sleeve 121 to its upper position.

On comprend aisément que l'organe d'actionnement de la vanne 20 d'évent selon l'invention (levier pivotant 21 ou manchon 121 coulissant) est intégré idéalement à une zone de préhension du dispositif lors de son remplissage. En effet, pour ouvrir la vanne d'évent, l'utilisateur peut enserrer de ses deux mains l'appareil en appuyant naturellement sur le levier 21 (ou le manchon 121). Ce mouvement d'ouverture de la vanne d'évent 20 coïncide avec le mouvement d'appui du dispositif sur la réserve en vue de l'ouverture des bornes 14 de remplissage (selon la direction D de remplissage).It is easily understood that the actuating member of the vent valve 20 according to the invention (pivoting lever 21 or sliding sleeve 121) is ideally integrated into a gripping zone of the device during its filling. Indeed, to open the vent valve, the user can clasp with both hands the device naturally pressing the lever 21 (or the sleeve 121). This opening movement of the vent valve 20 coincides with the support movement of the device on the reserve in order to open the filling terminals 14 (in the filling direction D).

Ces agencements simplifient la gestuelle et la coordination des mouvements pour l'utilisateur lors de l'opération de remplissage et divise par deux environ l'effort de remplissage par le patient du fait de la possibilité d'utiliser ses deux mains.These arrangements simplify gesture and coordination of movements for the user during the filling operation and halve about the filling effort by the patient because of the possibility of using both hands.

La figure 20 illustre encore une autre variante de réalisation de l'organe de commande de la vanne d'évent dans laquelle le levier pivotant des figures 9 à 16 est remplacé par un bouton 221 apte à être déplacé en translation par enfoncement. Le bouton 221 est solidaire d'un axe 26 relié à la vanne 2 d'évent via un mécanisme de transmission de mouvement de type bielle-manivelle (biellette 27 articulation 28). Le mécanisme de transmission de mouvement transforme un mouvement de translation du bouton 221 vers l'intérieur du carter 3 en un mouvement d'ouverture de la vanne 20. Dans cet exemple non limitatif, la vanne 2 est du type à ouverture par la rotation d'un axe (quart de tour par exemple). Le bouton 221 est intégré au carter 3 ou capot et peut être contraint vers sa position d'ouverture de la vanne 20 par un ressort 33. En variante l'action du ressort 33 peut être remplacée par l'action de retour automatique de la vanne 20.Figure 20 illustrates yet another alternative embodiment of the control member of the vent valve wherein the pivoting lever of Figures 9 to 16 is replaced by a button 221 adapted to be moved in translation by depression. The button 221 is integral with an axis 26 connected to the vent valve 2 via a crank-handle-type motion transmission mechanism (link 27 articulation 28). The mechanism for transmitting motion transforms a translation movement of the button 221 towards the inside of the casing 3 in an opening movement of the valve 20. In this nonlimiting example, the valve 2 is of the opening type by the rotation of the valve 20. one axis (quarter turn per example). The button 221 is integrated in the housing 3 or cover and can be forced to its open position of the valve 20 by a spring 33. Alternatively the action of the spring 33 can be replaced by the action of automatic return of the valve 20.

Le bouton 221 est situé de préférence dans la partie supérieure et/ou sur le côté du carter 3. De cette façon, l'effort d'appui sur le bouton 221 génère un effort sur le dispositif dans la direction D de remplissage qui contribue à l'ouverture des bornes 14 de remplissage.The button 221 is preferably located in the upper part and / or on the side of the casing 3. In this way, the pressing force on the button 221 generates a force on the device in the filling direction D which contributes to the opening of the charging terminals 14.

Comme précédemment, le positionnement naturel des mains sur l'ensemble des zones ergonomiques de préemption du dispositif permettent un alignement des efforts dans l'axe D de la borne de remplissage. Ceci limite les efforts du patient pour maintenir le système pendant les phases de remplissage et contribue de plus à diminuer l'usure anticipée des bornes de remplissage.As before, the natural positioning of the hands on all the ergonomic preemption areas of the device allow an alignment of forces in the axis D of the filling terminal. This limits the efforts of the patient to maintain the system during the filling phases and further contributes to reducing the anticipated wear of the filling terminals.

La figure 21 illustre encore une autre variante de réalisation de l'organe de commande de la vanne d'évent qui se distingue de la réalisation de la figure 9 par le fait que le levier 21 pivotant est articulé au niveau de son extrémité inférieure (axe de rotation 200), le levier 21 étant manoeuvré par son extrémité supérieure. Ainsi, en position de repos (vanne d'évent fermée), le levier 21 épouse sensiblement la surface du carter 3. L'extrémité supérieure du levier 21 peut coopérer par déformation élastique (clip) ou analogue avec le carter 3 pour former une position de repos stable.FIG. 21 illustrates yet another alternative embodiment of the control member of the vent valve which differs from the embodiment of FIG. 9 in that the pivoting lever 21 is articulated at its lower end (axis 200), the lever 21 being operated by its upper end. Thus, in the rest position (closed vent valve), the lever 21 substantially matches the surface of the housing 3. The upper end of the lever 21 can cooperate by elastic deformation (clip) or the like with the housing 3 to form a position stable rest.

Pour ouvrir la vanne d'évent 20, l'utilisateur tire l'extrémité supérieure du levier 21 vers l'extérieur du carter 3 et la pivote vers le bas dans la direction D de remplissage (rotation R figure 21). En position d'ouverture de la vanne d'évent 20, le levier 21 fait saillie sensiblement perpendiculairement à la surface du carter 3. En plus des avantages des autres variantes ci-dessus, dans ce mode de réalisation l'ouverture de la vanne d'évent 20 est indiquée de manière explicite par le levier 20 saillant. Ceci diminue encore les risques d'ouverture accidentelle ou d'oubli de la fermeture de la vanne d'évent 20 car l'utilisateur s'en aperçoit immédiatement.To open the vent valve 20, the user pulls the upper end of the lever 21 towards the outside of the casing 3 and pivots it downwards in the filling direction D (rotation R FIG. 21). In the open position of the vent valve 20, the lever 21 protrudes substantially perpendicular to the surface of the casing 3. In addition to the advantages of the other variants above, in this embodiment the opening of the valve Vent 20 is explicitly indicated by the protruding lever. This further reduces the risk of accidental opening or forgetting the closure of the vent valve 20 because the user realizes immediately.

L'organe d'actionnement de la vanne 20 d'évent est de préférence intégré à la surface du carter 3 de façon à faire peu ou pas saillie en position de repos (vanne 20 fermée). De cette façon, les ouvertures accidentelles de la vanne 20 d'évent sont évitées.The actuating member of the vent valve 20 is preferably integrated with the surface of the casing 3 so as to make little or no projection in the rest position. (valve 20 closed). In this way, accidental openings of the vent valve are avoided.

Le carter 3 ou le dispositif dans son ensemble peuvent être habillés d'un système de protection amovible par exemple en matière textile. Ce système de protection peut être équipé de zones de rangements pour canules ou tout autre objet a poignée centrale 13 peut est disposée à proximité de l'organe 21 d'ouverture de la vanne 2 d'évent pour offrir, dans une même zone, les fonctionnalités de portage, de mesure de niveau et d'ouverture de la vanne d'évent.The casing 3 or the device as a whole may be covered with a removable protective system, for example made of textile material. This protection system may be equipped with storage areas for cannulas or any other object with a central handle 13 may be disposed near the opening member 21 of the vent valve 2 to provide, in the same area, the porting, level measurement and vent valve opening capabilities.

Claims (15)

Dispositif autonome transportable d'oxygénothérapie pour stockage et délivrance d'oxygène à un utilisateur comprenant un carter (3) contenant un réservoir (1) cryogénique destiné à contenir de l'oxygène liquide, un circuit de réchauffage raccordé à une sortie du réservoir (1) comprenant au moins un organe (2, 12) de réchauffage/vaporisation de l'oxygène provenant du réservoir (1) en vue de sa fourniture au système respiratoire d'un utilisateur, un circuit de remplissage du réservoir (1) cryogénique comprenant un organe (14) de connexion fluidique tel qu'une borne de remplissage mâle ou femelle, prévu pour être connecté, selon une direction (D) de remplissage, à une borne complémentaire d'une réserve d'oxygène liquide, une vanne d'évent (20) reliée à l'intérieur du réservoir (1), un organe (21, 121, 221) mobile de commande de la vanne d'évent (20) actionnable manuellement, l'organe (21, 121, 221) de commande étant déplaçable relativement au carter (3) pour actionner la vanne (20) via un système (23, 24 ; 25 ; 26 à 28) de transmission de mouvement entre des positions de fermeture et d'ouverture de la vanne d'évent (20), caractérisé en ce que, dans son déplacement de la position de fermeture vers la position d'ouverture, l'organe de commande (21, 121, 221) décrit un mouvement ayant au moins une composante orientée sensiblement vers l'intérieur du carter (3) et/ou dans la direction de remplissage (D).A transportable autonomous oxygen therapy device for storing and delivering oxygen to a user comprising a housing (3) containing a cryogenic reservoir (1) for containing liquid oxygen, a heating circuit connected to an outlet of the reservoir (1 ) comprising at least one oxygen reheating / vaporizing member (2, 12) from the reservoir (1) for supplying to a user's breathing system, a cryogenic reservoir filling circuit (1) comprising a fluidic connection member (14), such as a male or female charging terminal, arranged to be connected in a filling direction (D) to a complementary terminal of a liquid oxygen supply, a vent valve (20) connected to the interior of the tank (1), a movable valve (20) movable manually (20, 121, 221), the control member (21, 121, 221) being displaceable relative to the housing (3 ) to actuate the valve (20) via a system (23, 24; 25; 26 to 28) between closing and opening positions of the vent valve (20), characterized in that , in its movement from the closed position to the open position, the control unit (21, 121, 221) describes a movement having at least one component oriented substantially inwardly of the housing (3) and / or in the filling direction (D). Dispositif selon la revendication 1, caractérisé en ce que dans son actionnement de la position de fermeture vers la position d'ouverture, l'organe de commande (21, 121, 221) et/ou le système (23, 24 ; 25 ; 26 à 28) de transmission de mouvement génère un effort sur le dispositif ayant au moins une composante orientée dans la direction de remplissage (D).Device according to claim 1, characterized in that in its actuation from the closed position to the open position, the control member (21, 121, 221) and / or the system (23, 24; 25; 26 28) transmits a force on the device having at least one component oriented in the filling direction (D). Dispositif selon la revendication 1 ou 2, caractérisé en ce que, dans son déplacement de la position d'ouverture vers la position de fermeture, l'organe de commande (21, 121, 221) décrit un mouvement orienté sensiblement vers l'extérieur du carter (3) et/ou à l'opposé de la direction de remplissage (D).Device according to claim 1 or 2, characterized in that , in its displacement from the open position to the closed position, the control member (21, 121, 221) describes a movement oriented substantially outwards of the housing (3) and / or opposite the filling direction (D). Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'organe (21, 121, 221) de commande est mobile en rotation et/ou en translation relativement au carter (3).Device according to any one of claims 1 to 3, characterized in that the control member (21, 121, 221) is movable in rotation and / or in translation relative to the housing (3). Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'organe (21, 121, 221) de commande comporte un levier (21) articulé relativement au carter (3).Device according to any one of claims 1 to 4, characterized in that the control member (21, 121, 221) comprises a lever (21) hinged relative to the housing (3). Dispositif selon la revendication 5, caractérisé en ce que le levier (21) est articulé relativement au carter (3) au niveau d'une première extrémité (23) et comporte une seconde extrémité (29) libre.Device according to claim 5, characterized in that the lever (21) is articulated relative to the housing (3) at a first end (23) and has a second end (29) free. Dispositif selon l'une quelconque des revendications 5 ou 6, caractérisé en ce que le levier (21) est relié à la vanne (20) d'évent par un système de transmission de mouvement (24) de façon à former un bras de levier d'actionnement de ladite vanne (20) lors de la rotation du levier (21).Device according to any one of claims 5 or 6, characterized in that the lever (21) is connected to the vent valve (20) by a motion transmission system (24) so as to form a lever arm actuating said valve (20) during rotation of the lever (21). Dispositif selon l'une quelconque des revendications 5 à 7, caractérisé en ce qu'il comporte un élément (30) de blocage amovible du levier (21) déplaçable entre une position autorisant la rotation du levier (21) et une position empêchant la rotation du levier (21).Device according to any one of claims 5 to 7, characterized in that it comprises a removable locking element (30) of the lever (21) movable between a position allowing the rotation of the lever (21) and a position preventing rotation lever (21). Dispositif selon les revendications 6 et 8 prises en combinaison, caractérisé en ce que l'élément (30) de blocage amovible du levier (21) comprend une butée (30) mobile relativement au carter (3) apte à coopérer ou non avec la seconde extrémité (29) du levier (21), la butée mobile étant reliée à une portion (31) de préhension.Device according to claims 6 and 8 taken in combination, characterized in that the element (30) for releasably locking the lever (21) comprises a stop (30) movable relative to the housing (3) adapted to cooperate or not with the second end (29) of the lever (21), the movable stop being connected to a portion (31) gripping. Dispositif selon la revendication 8 ou 9, caractérisé en ce qu'il comporte un organe de rappel sollicitant les moyens (30) de blocage du levier (21) vers la position empêchant la rotation du levier (21).Device according to claim 8 or 9, characterized in that it comprises a return member urging the means (30) for locking the lever (21) to the position preventing rotation of the lever (21). Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'organe (21, 121, 221) de commande comporte un manchon (121) apte à coulisser autour d'au moins une partie du carter (3) entre des positions haute et basse correspondant respectivement à une fermeture et une ouverture de la vanne (20) d'évent, les positions hautes et basse étant définies relativement aux parties supérieure et inférieure du carter (3), le dispositif comportant en outre un organe de rappel sollicitant le manchon (121) vers sa position haute.Device according to any one of claims 1 to 4, characterized in that the control member (21, 121, 221) comprises a sleeve (121) slidable around at least a portion of the housing (3) between high and low positions respectively corresponding to a closing and opening of the vent valve (20), the high and low positions being defined relative to the upper and lower parts of the casing (3), the device further comprising a bias biasing the sleeve (121) to its up position. Dispositif selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le carter (3) comporte au moins une portion évasée en direction de sa partie inférieure et en ce que l'organe de commande (21, 121, 221) est situé au moins partiellement au niveau de la portion évasée.Device according to any one of claims 1 to 11, characterized in that the casing (3) comprises at least one flared portion towards its lower part and in that the control member (21, 121, 221) is at least partially at the flared portion. Dispositif selon l'une quelconque des revendications 1 à 12, caractérisé en ce que l'organe (14) de connexion fluidique est situé dans la partie inférieure du dispositif.Device according to any one of claims 1 to 12, characterized in that the fluidic connection member (14) is located in the lower part of the device. Dispositif selon l'une quelconque des revendications 1 à 13, caractérisé en ce que l'organe (14) de connexion fluidique est située dans la partie inférieure du carter (3) destinée à venir en vis-à-vis du socle (4).Device according to any one of claims 1 to 13, characterized in that the fluidic connection member (14) is situated in the lower part of the casing (3) designed to face the base (4). . Dispositif selon l'une quelconque des revendications 1 à 14, caractérisé en ce que l'organe (14) de connexion fluidique formant borne de remplissage du réservoir (1) est orientée selon la direction (D) de remplissage,Device according to any one of claims 1 to 14, characterized in that the fluidic connection member (14) forming the filling terminal of the reservoir (1) is oriented in the direction (D) of filling,
EP07301212A 2006-08-16 2007-07-09 Portable device for oxygen storage and delivery Withdrawn EP1890073A1 (en)

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FR2904998B1 (en) 2010-01-01
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FR2904998A1 (en) 2008-02-22
CN101130122A (en) 2008-02-27

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