EP0512887A1 - Breathing gas feed device - Google Patents

Breathing gas feed device Download PDF

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Publication number
EP0512887A1
EP0512887A1 EP92401179A EP92401179A EP0512887A1 EP 0512887 A1 EP0512887 A1 EP 0512887A1 EP 92401179 A EP92401179 A EP 92401179A EP 92401179 A EP92401179 A EP 92401179A EP 0512887 A1 EP0512887 A1 EP 0512887A1
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EP
European Patent Office
Prior art keywords
rod
housing
assembly
piston
side wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92401179A
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German (de)
French (fr)
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EP0512887B1 (en
Inventor
François Sauze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
La Spirotechnique Industrielle et Commerciale
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La Spirotechnique Industrielle et Commerciale
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/18—Air supply
    • B63C11/22—Air supply carried by diver
    • B63C11/2227—Second-stage regulators
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/003—Means for influencing the temperature or humidity of the breathing gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/18—Air supply
    • B63C11/22—Air supply carried by diver
    • B63C2011/2254—Air supply carried by diver comprising means for prevention of ice formation, e.g. means for heating breathing gas in first or second stage regulators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S137/00—Fluid handling
    • Y10S137/908—Respirator control
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface

Definitions

  • the present invention relates to a device for supplying respiratory gas, more particularly for a diver, of the type comprising a housing defining an internal chamber delimited by a flexible diaphragm, a set of expansion valve disposed in a first side wall of the housing and comprising a valve cooperating with a seat and integral with a piston at a first end of a piston rod assembly extending in the internal chamber and the other end of which is coupled to a lever cooperating with the diaphragm.
  • a device of this type is described in document FR-A-2,644,750, in the name of the Applicant.
  • This type of device allows, thanks to the diaphragm, the provision to a user of sufficient quantities of breathing gas and at the pressure of the surrounding medium, the expansion valve assembly ensuring the required expansion of the breathing gas which is supplied to a pressure higher than that of the surrounding medium.
  • such expansion leads to a fairly significant production of cold in the housing, thus tending to cool the mechanical control of the valve assembly considerably.
  • the temperature in the internal chamber drops to an even lower value.
  • the internal chamber often contains water, entering through the respiratory nozzle.
  • the air exhaled by the user is saturated with humidity.
  • the object of the present invention is to propose a device of the type defined above which, while remaining simple in construction and low manufacturing costs, makes it possible to considerably improve the resistance to icing in environments at cold temperatures but not very negative. , as is the case in particular for diving.
  • the expansion valve assembly comprises means for heat exchange with the environment surrounding the device.
  • the valve seat is mounted in a tubular element made of thermally conductive material having an outer part extending outside the housing and having a configuration having a large exchange surface with the surrounding medium, typically fins.
  • the other end of the rod assembly is guided in a tubular rod support mounted in a second side wall of the housing opposite the first side wall and associated with means for exchanging heat with the environment surrounding the device, the rod support being typically coupled to a closure element having an external part having a configuration having a large exchange surface with the surrounding environment, for example fins.
  • the frigories created in the device by the expansion of the respiratory gas are evacuated into the surrounding medium by the heat exchange means, essentially at the level of the expansion valve assembly and, in the event of prolonged use of the device in a cold environment, also at the articulated connection between the rod assembly and the lever, preventing the risk of icing at this location.
  • the present invention preferably applies to a second stage of a compressed air breathing apparatus, in particular for an underwater diver, but can also be applied to the first relaxation stage of such an apparatus.
  • a housing 1 in the form of a bowl, with a bottom 2 and two parts of opposite side walls 3 and 4.
  • the bowl is closed by a flexible diaphragm made of elastomeric material 5 protected by an external cover 6 comprising a pushbutton return to forced feeding 7.
  • the housing 1 and the diaphragm 5 thus define an internal chamber 8 communicating by a conduit with a mouthpiece (not shown) and supplied with respiratory gas by a set of expansion valve, generally designated by the reference 9, arranged in the first side wall part 3.
  • the latter is formed with a housing 10 in which is mounted a tubular valve body 11 defining an internal bore 12 in which is slidably mounted a piston 13, one end of which carries an element elastomeric valve 14 and which is extended, opposite the valve 14, by a rod 15 extending in the internal chamber 8.
  • a tubular element 16 comprising an outer part extending out of the housing and intended to be connected to a breathing gas supply pipe under pressure (not shown).
  • the tubular element 16 comprises, at its inner end, a thread receiving a tubular element 17, the bevelled inner end forms a seat for the valve 14.
  • the piston 13-valve 14 assembly is biased towards the seat 17 by a spring 18 bearing on a deflector 19 attached to the side wall 3, inside the internal chamber 8, and forming a guide for the rod 15.
  • the deflector 19 is locked in position against the side wall 3 by a projection 20 s' extending from the bottom 2 of the housing 1 inside the chamber 8.
  • the outer part of the tubular element 16 is typically formed with a plurality of circular fins 21 for the establishment of a heat exchange between the surrounding medium and the assembly consisting of the tubular element 16, seat body 17 and valve body 11.
  • the piston rod 15 is connected coaxially to a second rod 22 whose end opposite the piston rod 15 carries a washer 23 sliding in an internal bore of a tubular rod support 24 mounted on the second side wall part 4 opposite the valve assembly 9.
  • the rod support 24 has two lateral openings 25 through which pass, to cooperate with the washer 23, two fingers 26 of one end in the form of fork of an actuating lever 27, the other end of which cooperates in contact with the diaphragm 5.
  • the piston rod 15 is screwed into a cap 28 of insulating plastic material, for example acetal resin, itself screwed into a threaded end of a tubular connector 29, also in insulating plastic material, in particular of acetal resin, in which an enlarged head 30, for example a spherical head, is immobilized, at the end of the rod 22 opposite the washer 23.
  • insulating plastic material for example acetal resin
  • the rod and lever support 24 is mounted in a through opening 31 in the second side wall 4 and is associated by screwing on a threaded inner end of a cylindrical closure and fixing element 32 comprising an external part formed, like the external part of the tubular element 16, with a series of circular fins 33, the cylindrical element 32 being provided, at its external end, with a housing 34 allowing it to be screwed with the rod support 24.
  • a cylindrical closure and fixing element 32 comprising an external part formed, like the external part of the tubular element 16, with a series of circular fins 33, the cylindrical element 32 being provided, at its external end, with a housing 34 allowing it to be screwed with the rod support 24.
  • the piston 13-valve 14-piston rod 15 assembly, the rod 22 and the lever 27 are made of stainless steel.
  • the cover 19 is made of the same plastic material as the housing 1, for example polyphenylene oxide or polyurethane.
  • the seat body 17, the valve body 11, the rod support 24 are made of chromed brass.
  • the tubular element 16 and the cylindrical element 32 are made of surface treatment brass, for example chrome.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Lift Valve (AREA)
  • Temperature-Responsive Valves (AREA)
  • Valve Housings (AREA)

Abstract

The pressure-relief valve assembly (9), coupled to the diaphragm (5) lever (27) by a rod assembly (15, 22) traversing the internal cavity (8) of the casing (1), comprises means (16, 21) for heat exchange with the surrounding environment, a rod support (24), at the end of the rod assembly (15, 22) opposite the valve assembly (9), also being advantageously combined with heat-exchange means (32, 33) so as to prevent icing, under the effect of the pressure-relief of the breathing gas in the casing, of the mechanical equipment for controlling the valve assembly when used in a cold environment. …<IMAGE>…

Description

La présente invention concerne un dispositif d'alimentation en gaz respiratoire, plus particulièrement pour plongeur, du type comprenant un boîtier définissant une chambre interne délimitée par un diaphragme souple, un ensemble de valve de détente disposé dans une première paroi latérale du boîtier et comprenant un clapet coopérant avec un siège et solidaire d'un piston à une première extrémité d'un ensemble de tige de piston s'étendant dans la chambre interne et dont l'autre extrémité est couplée à un levier coopérant avec le diaphragme.The present invention relates to a device for supplying respiratory gas, more particularly for a diver, of the type comprising a housing defining an internal chamber delimited by a flexible diaphragm, a set of expansion valve disposed in a first side wall of the housing and comprising a valve cooperating with a seat and integral with a piston at a first end of a piston rod assembly extending in the internal chamber and the other end of which is coupled to a lever cooperating with the diaphragm.

Un dispositif de ce type est décrit dans le document FR-A-2.644.750, au nom de la Demanderesse. Ce type de dispositif permet, grâce au diaphragme, la mise à disposition d'un utilisateur de quantités de gaz respirable suffisantes et à la pression du milieu environnant, l'ensemble de valve de détente assurant la détente requise du gaz respiratoire qui est fourni à une pression supérieure à celle du milieu environnant. Comme mentionné dans le document ci-dessus, une telle détente entraîne une production de froid assez importante dans le boîtier, tendant ainsi à refroidir notablement l'équipage mécanique de commande de l'ensemble de valve. Lorsque l'utilisateur évolue dans un environnement dont la température est froide, la température dans la chambre interne descend à une valeur encore inférieure. La chambre interne contient souvent de l'eau, pénétrant par l'embout respiratoire. De plus, l'air expiré par l'utilisateur est saturé en humidité. L'humidité dans la chambre se transforme au contact des pièces froides en glace qui peut provoquer le blocage de l'équipage mécanique de l'ensemble de valve. Dans une première approche pour remédier à ces inconvénients, le document ci-dessus prévoyait de réaliser l'ensemble de tige en matériau thermiquement non conducteur. La tendance actuelle étant de réaliser les boîtiers non plus en métal mais en matériau plastique, la solution selon la première approche sus-mentionnée s'est révélée insuffisante.A device of this type is described in document FR-A-2,644,750, in the name of the Applicant. This type of device allows, thanks to the diaphragm, the provision to a user of sufficient quantities of breathing gas and at the pressure of the surrounding medium, the expansion valve assembly ensuring the required expansion of the breathing gas which is supplied to a pressure higher than that of the surrounding medium. As mentioned in the document above, such expansion leads to a fairly significant production of cold in the housing, thus tending to cool the mechanical control of the valve assembly considerably. When the user operates in an environment with a cold temperature, the temperature in the internal chamber drops to an even lower value. The internal chamber often contains water, entering through the respiratory nozzle. In addition, the air exhaled by the user is saturated with humidity. The humidity in the chamber turns into contact with cold parts into ice which can cause the mechanical assembly of the valve assembly to jam. In a first approach to remedy these drawbacks, the above document provided for making the rod assembly in thermally non-conductive material. The current trend being to make the housings no longer in metal but in plastic material, the solution according to the first approach mentioned above has proved insufficient.

La présente invention a pour objet de proposer un dispositif du type défini ci-dessus qui, tout en restant de construction simple et de faibles coûts de fabrication, permette d'améliorer considérablement la résistance au givrage dans des environnements à des températures froides mais peu négatives, comme c'est le cas en particulier pour la plongée.The object of the present invention is to propose a device of the type defined above which, while remaining simple in construction and low manufacturing costs, makes it possible to considerably improve the resistance to icing in environments at cold temperatures but not very negative. , as is the case in particular for diving.

A cette fin, selon une caractéristique de l'invention, l'ensemble de valve de détente comporte des moyens d'échange de chaleur avec le milieu environnant le dispositif.To this end, according to a characteristic of the invention, the expansion valve assembly comprises means for heat exchange with the environment surrounding the device.

Selon une caractéristique plus particulière de l'invention, le siège de clapet est monté dans un élément tubulaire en matériau thermiquement conducteur ayant une partie extérieure s'étendant hors du boîtier et ayant une configuration présentant une surface d'échange importante avec le milieu environnant, typiquement des ailettes.According to a more particular characteristic of the invention, the valve seat is mounted in a tubular element made of thermally conductive material having an outer part extending outside the housing and having a configuration having a large exchange surface with the surrounding medium, typically fins.

Selon une autre caractéristique de l'invention, l'autre extrémité de l'ensemble de tige est guidée dans un support de tige tubulaire monté dans une deuxième paroi latérale du boîtier opposée à la première paroi latérale et associé à des moyens d'échange de chaleur avec le milieu environnant le dispositif, le support de tige étant typiquement couplé à un élément d'obturation ayant une partie extérieure ayant une configuration présentant une surface d'échange importante avec le milieu environnant, par exemple des ailettes.According to another characteristic of the invention, the other end of the rod assembly is guided in a tubular rod support mounted in a second side wall of the housing opposite the first side wall and associated with means for exchanging heat with the environment surrounding the device, the rod support being typically coupled to a closure element having an external part having a configuration having a large exchange surface with the surrounding environment, for example fins.

Avec un tel agencement, les frigories créées dans le dispositif par la détente du gaz respiratoire s'évacuent dans le milieu environnant par les moyens d'échange de chaleur, essentiellement au niveau de l'ensemble de valve de détente et, en cas d'utilisation prolongée du dispositif dans un environnement froid, également au niveau de la liaison articulée entre l'ensemble de tige et le levier, prévenant les risques de givrage à cet endroit.With such an arrangement, the frigories created in the device by the expansion of the respiratory gas are evacuated into the surrounding medium by the heat exchange means, essentially at the level of the expansion valve assembly and, in the event of prolonged use of the device in a cold environment, also at the articulated connection between the rod assembly and the lever, preventing the risk of icing at this location.

La présente invention s'applique de préférence à un deuxième étage d'un appareil respiratoire à air comprimé, notamment pour plongeur sous-marin mais peut également s'appliquer au premier étage de détente d'un tel appareil.The present invention preferably applies to a second stage of a compressed air breathing apparatus, in particular for an underwater diver, but can also be applied to the first relaxation stage of such an apparatus.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description suivante d'un mode de réalisation, donnée à titre illustratif mais nullement limitatif, faite en relation avec le dessin annexé, sur lequel :

  • la planche unique est une vue schématique en coupe d'un deuxième étage de détente de plongée.
Other characteristics and advantages of the present invention will emerge from the following description of an embodiment, given by way of illustration but in no way limiting, made in relation to the appended drawing, in which:
  • the single board is a schematic sectional view of a second stage of diving trigger.

Sur la figure unique, on reconnaît un boîtier 1 en forme de cuvette, avec un fond 2 et deux parties de parois latérales opposées 3 et 4. La cuvette est fermée par un diaphragme souple en matériau élastomère 5 protégé par un capot externe 6 comportant un bouton-poussoir de remise en alimentation forcée 7. Le boîtier 1 et le diaphragme 5 définissent ainsi une chambre interne 8 communiquant par un conduit avec un embout buccal (non représenté) et alimentée en gaz respiratoire par un ensemble de valve de détente, désigné généralement par la référence 9, disposé dans la première partie de paroi latérale 3. Cette dernière est formée avec un logement 10 dans lequel est monté un corps de valve tubulaire 11 définissant un alésage interne 12 dans lequel est monté à coulissement un piston 13 dont une extrémité porte un élément de clapet en élastomère 14 et qui est prolongé, à l'opposé du clapet 14, par une tige 15 s'étendant dans la chambre interne 8.In the single figure, there is a housing 1 in the form of a bowl, with a bottom 2 and two parts of opposite side walls 3 and 4. The bowl is closed by a flexible diaphragm made of elastomeric material 5 protected by an external cover 6 comprising a pushbutton return to forced feeding 7. The housing 1 and the diaphragm 5 thus define an internal chamber 8 communicating by a conduit with a mouthpiece (not shown) and supplied with respiratory gas by a set of expansion valve, generally designated by the reference 9, arranged in the first side wall part 3. The latter is formed with a housing 10 in which is mounted a tubular valve body 11 defining an internal bore 12 in which is slidably mounted a piston 13, one end of which carries an element elastomeric valve 14 and which is extended, opposite the valve 14, by a rod 15 extending in the internal chamber 8.

Conformément à l'invention, dans le corps de valve 11 est vissé un élément tubulaire 16 comportant une partie extérieure s'étendant hors du boîtier et destinée à être raccordée à une tubulure d'amenée de gaz respiratoire sous pression (non représentée). L'élément tubulaire 16 comporte, à son extrémité intérieure, un taraudage recevant un élément tubulaire 17 dont l'extrémité intérieure biseautée forme siège pour le clapet 14. L'ensemble piston 13-clapet 14 est sollicité en direction du siège 17 par un ressort 18 prenant appui sur un déflecteur 19 rapporté sur la paroi latérale 3, à l'intérieur de la chambre interne 8, et formant guide pour la tige 15. Le déflecteur 19 est bloqué en position contre la paroi latérale 3 par une saillie 20 s'étendant depuis le fond 2 du boîtier 1 à l'intérieur de la chambre 8.According to the invention, in the valve body 11 is screwed a tubular element 16 comprising an outer part extending out of the housing and intended to be connected to a breathing gas supply pipe under pressure (not shown). The tubular element 16 comprises, at its inner end, a thread receiving a tubular element 17, the bevelled inner end forms a seat for the valve 14. The piston 13-valve 14 assembly is biased towards the seat 17 by a spring 18 bearing on a deflector 19 attached to the side wall 3, inside the internal chamber 8, and forming a guide for the rod 15. The deflector 19 is locked in position against the side wall 3 by a projection 20 s' extending from the bottom 2 of the housing 1 inside the chamber 8.

Conformément à un aspect de l'invention, la partie extérieure de l'élément tubulaire 16 est formée typiquement avec une pluralité d'ailettes circulaires 21 pour l'établissement d'un échange thermique entre le milieu environnant et l'ensemble constitué de l'élément tubulaire 16, du corps de siège 17 et du corps de valve 11.According to one aspect of the invention, the outer part of the tubular element 16 is typically formed with a plurality of circular fins 21 for the establishment of a heat exchange between the surrounding medium and the assembly consisting of the tubular element 16, seat body 17 and valve body 11.

Selon un aspect préférentiel de l'invention, la tige de piston 15 est reliée coaxialement à une deuxième tige 22 dont l'extrémité opposée à la tige de piston 15 porte une rondelle 23 coulissant dans un alésage interne d'un support de tige tubulaire 24 monté sur la deuxième partie de paroi latérale 4 opposée à l'ensemble de valve 9. Le support de tige 24 comporte deux ouvertures latérales 25 au travers desquelles passent, pour coopérer avec la rondelle 23, deux doigts 26 d'une extrémité en forme de fourche d'un levier d'actionnement 27 dont l'autre extrémité coopère en contact avec le diaphragme 5.According to a preferred aspect of the invention, the piston rod 15 is connected coaxially to a second rod 22 whose end opposite the piston rod 15 carries a washer 23 sliding in an internal bore of a tubular rod support 24 mounted on the second side wall part 4 opposite the valve assembly 9. The rod support 24 has two lateral openings 25 through which pass, to cooperate with the washer 23, two fingers 26 of one end in the form of fork of an actuating lever 27, the other end of which cooperates in contact with the diaphragm 5.

De façon plus spécifique, comme représenté sur la figure, la tige de piston 15 est vissée dans un capuchon 28 en matériau plastique isolant, par exemple en résine acétal, lui-même vissé dans une extrémité taraudée d'un raccord tubulaire 29, également en matériau plastique isolant, notamment en résine acétal, dans laquelle est immobilisée une tête élargie 30, par exemple sphérique, à l'extrémité de la tige 22 opposée à la rondelle 23.More specifically, as shown in the figure, the piston rod 15 is screwed into a cap 28 of insulating plastic material, for example acetal resin, itself screwed into a threaded end of a tubular connector 29, also in insulating plastic material, in particular of acetal resin, in which an enlarged head 30, for example a spherical head, is immobilized, at the end of the rod 22 opposite the washer 23.

Selon un aspect de l'invention, le support de tige et de levier 24 est monté dans une ouverture traversante 31 dans la deuxième paroi latérale 4 et est associé par vissage sur une extrémité intérieure filetée d'un élément cylindrique d'obturation et de fixation 32 comportant une partie extérieure formée, comme la partie extérieure de l'élément tubulaire 16, avec une série d'ailettes circulaires 33, l'élément cylindrique 32 étant pourvu, à son extrémité extérieure, d'un logement 34 permettant son vissage avec le support de tige 24.According to one aspect of the invention, the rod and lever support 24 is mounted in a through opening 31 in the second side wall 4 and is associated by screwing on a threaded inner end of a cylindrical closure and fixing element 32 comprising an external part formed, like the external part of the tubular element 16, with a series of circular fins 33, the cylindrical element 32 being provided, at its external end, with a housing 34 allowing it to be screwed with the rod support 24.

Dans un mode de réalisation pratique, l'ensemble piston 13-clapet 14- tige de piston 15, la tige 22 et le levier 27 sont réalisés en acier inoxydable. Le capot 19 est réalisé dans le même matériau plastique que le boîtier 1, par exemple en polyoxyde de phénylène ou en polyuréthanne. Le corps de siège 17, le corps de valve 11, le support de tige 24 sont réalisés en laiton chromé. L'élément tubulaire 16 et l'élément cylindrique 32 sont réalisés en laiton à traitement de surface, par exemple chromé.In a practical embodiment, the piston 13-valve 14-piston rod 15 assembly, the rod 22 and the lever 27 are made of stainless steel. The cover 19 is made of the same plastic material as the housing 1, for example polyphenylene oxide or polyurethane. The seat body 17, the valve body 11, the rod support 24 are made of chromed brass. The tubular element 16 and the cylindrical element 32 are made of surface treatment brass, for example chrome.

Quoique la présente invention ait été décrite en relation avec un mode de réalisation, elle ne s'en trouve pas limitée mais est au contraire susceptible de modifications et de variantes qui apparaîtront à l'homme de l'art.Although the present invention has been described in relation to an embodiment, it is not limited thereto but is on the contrary liable to modifications and variants which will appear to those skilled in the art.

Claims (10)

Dispositif d'alimentation en gaz respiratoire, comprenant un boîtier (1) définissant une chambre interne (8) délimitée par un diaphragme souple (5), un ensemble de valve de détente (9) disposé dans une première paroi latérale (3) du boîtier et comprenant un clapet (14) coopérant avec un siège (17) et solidaire d'un piston (13) à une première extrémité d'un ensemble de tige de piston (15, 22) s'étendant dans la chambre interne et dont l'autre extrémité (23) est couplée à un levier (27) coopérant avec le diaphragme (5), caractérisé en ce que l'ensemble de valve de détente (9) comporte des moyens (16, 21) d'échange de chaleur avec le milieu environnant le dispositif.Respiratory gas supply device, comprising a housing (1) defining an internal chamber (8) delimited by a flexible diaphragm (5), an expansion valve assembly (9) disposed in a first side wall (3) of the housing and comprising a valve (14) cooperating with a seat (17) and integral with a piston (13) at a first end of a piston rod assembly (15, 22) extending in the internal chamber and whose l the other end (23) is coupled to a lever (27) cooperating with the diaphragm (5), characterized in that the expansion valve assembly (9) comprises means (16, 21) for heat exchange with the environment surrounding the device. Dispositif selon la revendication 1, caractérisé en ce que le siège (17) est monté dans un élément tubulaire (16) en matériau thermiquement conducteur ayant une partie extérieure s'étendant hors du boîtier et ayant une configuration présentant une surface d'échange importante (21) avec le milieu environnant.Device according to claim 1, characterized in that the seat (17) is mounted in a tubular element (16) of thermally conductive material having an outer part extending outside the housing and having a configuration having a large exchange surface ( 21) with the surrounding environment. Dispositif selon la revendication 2, caractérisé en ce que la partie extérieure comporte des ailettes (21).Device according to claim 2, characterized in that the external part comprises fins (21). Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que l'ensemble piston (13) - clapet (14) est sollicité en direction du siège (17) par un ressort (18) prenant appui sur un capot (19) disposé dans la chambre interne (8) et réalisé en matériau plastique.Device according to one of claims 1 to 3, characterized in that the piston (13) - valve (14) assembly is biased towards the seat (17) by a spring (18) bearing on a cover (19) arranged in the internal chamber (8) and made of plastic material. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'ensemble de tige (15, 22) comprend une première tige (15) solidaire du piston (13) et une deuxième tige (22), les première et deuxième tiges étant reliées coaxialement par un élément de raccord (29) en matériau plastique.Device according to one of claims 1 to 4, characterized in that the rod assembly (15, 22) comprises a first rod (15) integral with the piston (13) and a second rod (22), the first and second rods being coaxially connected by a connecting element (29) made of plastic material. Dispositif selon la revendication 5, caractérisé en ce que les première (15) et deuxième (22) tiges sont en acier inoxydable.Device according to claim 5, characterized in that the first (15) and second (22) rods are made of stainless steel. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que l'autre extrémité (23) de l'ensemble de tige est guidée dans un support de tige tubulaire (24) monté dans une deuxième paroi latérale (4) du boîtier opposée à la première paroi latérale (3) et associé à des moyens d'échange de chaleur (32, 33) avec le milieu environnant le dispositif.Device according to one of claims 1 to 6, characterized in that the other end (23) of the rod assembly is guided in a tubular rod support (24) mounted in a second side wall (4) of the housing opposite the first side wall (3) and associated with heat exchange means (32, 33) with the environment surrounding the device. Dispositif selon la revendication 7, caractérisé en ce que le support de tige (24) est couplé à un élément cylindrique (32) comportant une partie extérieure ayant une configuration présentant une surface d'échange importante (33) avec le milieu environnant.Device according to claim 7, characterized in that the rod support (24) is coupled to a cylindrical element (32) having an outer part having a configuration having a large exchange surface (33) with the surrounding medium. Dispositif selon la revendication 8, caractérisé en ce que la partie extérieure de l'élément cylindrique (32) comporte des ailettes (33).Device according to claim 8, characterized in that the external part of the cylindrical element (32) comprises fins (33). Dispositif selon l'une des revendications précédentes, caractérisé en ce que le boîtier (1) est réalisé en matériau plastique.Device according to one of the preceding claims, characterized in that the housing (1) is made of plastic material.
EP92401179A 1991-05-02 1992-04-24 Breathing gas feed device Expired - Lifetime EP0512887B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9105388A FR2676000B1 (en) 1991-05-02 1991-05-02 RESPIRATORY GAS SUPPLY DEVICE.
FR9105388 1991-05-02

Publications (2)

Publication Number Publication Date
EP0512887A1 true EP0512887A1 (en) 1992-11-11
EP0512887B1 EP0512887B1 (en) 1996-03-13

Family

ID=9412445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92401179A Expired - Lifetime EP0512887B1 (en) 1991-05-02 1992-04-24 Breathing gas feed device

Country Status (6)

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US (1) US5265596A (en)
EP (1) EP0512887B1 (en)
JP (1) JP3201824B2 (en)
CA (1) CA2067870C (en)
DE (1) DE69208927T2 (en)
FR (1) FR2676000B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2727318A1 (en) * 1994-11-24 1996-05-31 Scubapro Europ REGULATOR FOR UNDERWATER RESPIRATORY DEVICES
EP0825103A3 (en) * 1996-08-23 1999-11-17 Johnson Worldwide Associates, Inc. Scuba diving breathing regulator
EP1366983A1 (en) * 2002-05-30 2003-12-03 SCUBAPRO EUROPE S.r.l. First stage pressure reducing valve with heat exchange fins, particularly for regulators of scuba breathing apparatus
WO2006002694A2 (en) 2004-07-02 2006-01-12 Mares S.P.A. Supply device for use in cold water
EP1889780A1 (en) * 2006-08-16 2008-02-20 La Spirotechnique Expansion valve for scuba diver breathable gas supply
GB2615896A (en) * 2022-02-18 2023-08-23 Draeger Safety Ag & Co Kgaa Pressure reduction device, process and computer program for manufacturing a pressure reduction device

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI98270C (en) * 1993-11-29 1997-05-26 Instrumentarium Oy Method and apparatus for evaporation of anesthetic agent
IT1281812B1 (en) * 1995-05-12 1998-03-03 Htm Sport Spa REGULATOR FOR IMMERSIONS IN COLD WATERS.
US5666945A (en) * 1995-06-07 1997-09-16 Salter Labs Pneumatically-operated gas demand apparatus
US5803073A (en) * 1996-03-08 1998-09-08 Toth; Douglas J. Second stage scuba diving regulator having a pneumatic-dependent anti-set feature
US5678541A (en) * 1996-03-15 1997-10-21 Garraffa; Dean R. Breathing regulator apparatus having automatic flow control
US6098622A (en) * 1998-10-15 2000-08-08 Ntc Technology Inc. Airway valve to facilitate re-breathing, method of operation, and ventilator circuit so equipped
USD424193S (en) * 1998-10-15 2000-05-02 Ntc Technology, Inc. Airway valve
JP2001088780A (en) * 1999-09-24 2001-04-03 Tabata:Kk Regulator for diving
JP3281339B2 (en) * 1999-09-24 2002-05-13 株式会社タバタ Diving regulator
US6718976B1 (en) * 1999-09-24 2004-04-13 Tabata Co., Ltd. Regulator for diving
ITSV20030026A1 (en) * 2003-06-06 2004-12-07 Scubapro Europ SCREW DISPENSER FOR UNDERWATER USE.
ITFI20030199A1 (en) * 2003-07-25 2005-01-26 Cressi Sub Spa SECONDARY VALVE PERFECTED FOR BRUSHING.
WO2006050384A2 (en) * 2004-11-01 2006-05-11 Salter Labs System and method for conserving oxygen delivery while maintaining saturation
US20100126509A1 (en) * 2008-11-26 2010-05-27 Chang Ta-Hsiang Air recycling device for auxiliary respiration apparatus
IT202000005305A1 (en) * 2020-03-12 2021-09-12 Mares Spa Regulating diaphragm for the second-stage regulator of two-stage underwater breathing apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2921594A (en) * 1955-04-01 1960-01-19 Alfred M Mayo Breathing apparatus
US4356820A (en) * 1980-08-18 1982-11-02 Sherwood-Selpac Corporation Heat reclaimer for demand regulator
FR2644750A1 (en) * 1989-03-21 1990-09-28 Spirotech Ind Commerc DEVICE FOR SUPPLYING RESPIRATORY GAS FOR A PLUNGER

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1715824A (en) * 1924-08-29 1929-06-04 Globar Corp Electrical resistance unit
GB633376A (en) * 1946-05-31 1949-12-12 Marconi Wireless Telegraph Co Improvements in or relating to electron discharge tubes
US3280907A (en) * 1964-09-01 1966-10-25 Hoffman Sidney Energy transfer device
US3731738A (en) * 1971-07-26 1973-05-08 H Cooper Tube fins of outwardly-organized materials
US4026283A (en) * 1973-12-28 1977-05-31 Taylor Diving & Salvage Co., Inc. Closed circuit, free-flow underwater breathing system
FR2594786B1 (en) * 1986-02-21 1988-05-13 Spirotech Ind Commerc COMPRESSED AIR RESPIRATORY APPARATUS FOR SCUBA DIVING
US5042473A (en) * 1990-02-15 1991-08-27 Pro-Tech Respirators, Inc. Demand valve for a respirator
IT224295Z2 (en) * 1991-03-08 1996-03-14 Scubapro Europ VALVE, IN PARTICULAR FOR DIVING SCUBA BREATHERS.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2921594A (en) * 1955-04-01 1960-01-19 Alfred M Mayo Breathing apparatus
US4356820A (en) * 1980-08-18 1982-11-02 Sherwood-Selpac Corporation Heat reclaimer for demand regulator
FR2644750A1 (en) * 1989-03-21 1990-09-28 Spirotech Ind Commerc DEVICE FOR SUPPLYING RESPIRATORY GAS FOR A PLUNGER

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2727318A1 (en) * 1994-11-24 1996-05-31 Scubapro Europ REGULATOR FOR UNDERWATER RESPIRATORY DEVICES
EP0825103A3 (en) * 1996-08-23 1999-11-17 Johnson Worldwide Associates, Inc. Scuba diving breathing regulator
EP1366983A1 (en) * 2002-05-30 2003-12-03 SCUBAPRO EUROPE S.r.l. First stage pressure reducing valve with heat exchange fins, particularly for regulators of scuba breathing apparatus
US7398794B2 (en) 2002-05-30 2008-07-15 Scubapro Europe S.R.L. First stage pressure reducing valve having a tubular plug, particularly for regulators of scuba breathing apparatus
WO2006002694A2 (en) 2004-07-02 2006-01-12 Mares S.P.A. Supply device for use in cold water
EP1889780A1 (en) * 2006-08-16 2008-02-20 La Spirotechnique Expansion valve for scuba diver breathable gas supply
FR2904962A1 (en) * 2006-08-16 2008-02-22 Spirotechnique Sa RELIEF DEVICE FOR BREATHABLE GAS SUPPLY TO A PLUNGER
GB2615896A (en) * 2022-02-18 2023-08-23 Draeger Safety Ag & Co Kgaa Pressure reduction device, process and computer program for manufacturing a pressure reduction device
GB2615896B (en) * 2022-02-18 2024-06-19 Draeger Safety Ag & Co Kgaa Pressure reduction device, process and computer program for manufacturing a pressure reduction device

Also Published As

Publication number Publication date
DE69208927D1 (en) 1996-04-18
CA2067870C (en) 2003-12-16
CA2067870A1 (en) 1992-11-03
JPH05262285A (en) 1993-10-12
FR2676000A1 (en) 1992-11-06
DE69208927T2 (en) 1996-09-19
FR2676000B1 (en) 1995-12-22
US5265596A (en) 1993-11-30
EP0512887B1 (en) 1996-03-13
JP3201824B2 (en) 2001-08-27

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