EP0269900B1 - Régulateur d'air pour appareil respiratoire - Google Patents

Régulateur d'air pour appareil respiratoire Download PDF

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Publication number
EP0269900B1
EP0269900B1 EP87116264A EP87116264A EP0269900B1 EP 0269900 B1 EP0269900 B1 EP 0269900B1 EP 87116264 A EP87116264 A EP 87116264A EP 87116264 A EP87116264 A EP 87116264A EP 0269900 B1 EP0269900 B1 EP 0269900B1
Authority
EP
European Patent Office
Prior art keywords
air
valve
conduit
airflow circuit
user
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87116264A
Other languages
German (de)
English (en)
Other versions
EP0269900A1 (fr
Inventor
Enrico Domenico Bozano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT87116264T priority Critical patent/ATE54637T1/de
Publication of EP0269900A1 publication Critical patent/EP0269900A1/fr
Application granted granted Critical
Publication of EP0269900B1 publication Critical patent/EP0269900B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/18—Air supply
    • B63C11/22—Air supply carried by diver
    • B63C11/2227—Second-stage regulators

Definitions

  • This invention relates to an air regulator for breathing apparatus, particularly for underwater breathing apparatus.
  • One of the most serious problems in the field of underwater breathing apparatus is to regulate the air flowrate supplied to a scuba-diver under particular conditions of oxigen requirements, such as when the scuba-diver is panting.
  • conventional regulators comprise a first stage for reducing the pressure of the air from the bottles, communicating with a second-stage reducing device which feeds the air into a hose to a mouthpiece for the user, the regulation of the amount of air supplied by said second-stage device upon each breathing act of the user being effected by valve-controlled devices under the action of a manostat diaphragm.
  • These conventional devices supply, upon each breathing act, an amount of air which is independent of the actual need of a user, said amount being limited by the diameter of the holes through which the air is passed.
  • the main object of this invention is to provide an air regulator for two-stage pressure reduction breathing apparatus, in which the second stage of the regulator comprises a first airflow circuit controlled by a valve through a manostat diaphragm characterized by the fact that a second airflow circuit is provided in the said second stage regulator in parallel with the first airflow circuit, the said second airflow circuit being normally closed, and being automatically switched on in case of forced or damping inhalation by the user, so as to supply to the breathing conduit leading to the user's mouthpiece a flow of air in addition to the primary flow of air from said first circuit to meet any additional need of air of the user.
  • the illustrated device comprises, as known per se, a body member 1 formed with an interior cylindrical chamber 2 communicating at an end thereof with an air inlet conduit 3 connected to the first stage of the regulator, and including at the other end thereof an opening 4 which constitutes a valve seat on the outer side thereof.
  • a cylindrical conduit 6 Concentric with the chamber 2 is a cylindrical conduit 6 slidably accommodating a small piston 7.
  • Said piston 7 is formed with an axial exactly-dimensioned hole 117 and comprises, on the end facing towards the valve seat 4 of said chamber 2, an annular seal 5 which normally rests against said valve seat to close it.
  • Said piston 7 is constantly urged against the valve seat 4 by a spring 8 abutting at an end thereof against said piston 7 and at the other end thereof against an apertured partition 9 arranged across the conduit 6.
  • Said partition 9 is provided with a central hole 10 which is formed as a valve seat on its side far from said piston 7.
  • the valve seat on the hole 10 co-operates with a valve member 11 mounted on a pivotable lever 12 which co-operates with a manostat diaphragm 13 mounted on the body member 1 of the regulator.
  • Said conduit 6, upstream of the piston 7, is formed with a hole 14 for communicating with a conduit 15 which is connected to the mouthpiece for the user.
  • Said lever 12 is pivotably mounted on a fulcrum 16 and is constantly urged by a spring 17 housed within the body member 1, so as to seat the valve member 11 against the valve seat 10.
  • the regulator prevents any flow of air from the conduit 3 to the conduit 15.
  • the reduced pressure created within the body member 1 causes, through the displacement of the diaphragm 13, the lever 12 to pivot against the action of the spring 17, whereby the valve member 11 is moved away from its valve seat permitting the air to flow from the conduit 3 to the chamber 2 and successively through the hole 4, the hole 117 of the piston 7, the valve seat 10 and the hole 18 in the wall of the conduit 6, downstream of the piston 7, to the conduit 15.
  • the piston 7 is replaced by a valve member 7' comprising a metallic tubular element 107' enwrapped circumferentially by a rubber shell 207' extending radially inwards at one end thereof so as to form a diaphragm 307' having a central hole wherein a metal nozzle 407' with a central exactly-dimensioned through-hole 117 is sealingly embedded.
  • the valve member 7' is not slidable in the tubular conduit 6 as its upper end abuts against the partition 9 and its opposite end rests against the valve seat 4 through said diaphragm 307'. The operation of the just-described device is apparent.
  • the diaphragm 307' is lifted from said seat 4 by virtue of its resiliency, thus permitting the air to pass from the seat 4 through the by-pass hole 14 to the conduit 15.
  • FIG. 3 shows a modification of the valve member 7' of the figures 2 and 4.
  • valve member The arrangement and operation of this valve member are exactly the same as those described above in connection with the embodiment of the figures 2 and 4.
  • the lever 12 is subjected to a minimum pressure and opens the valve member 11, thus permitting the flow of air through the exactly-dimensioned hole 117 and the opening 10 to the conduit 15 so as to permit a good breathing. If, due to any reason, the demand of air increases, the servo- control mechanism is activated whereby the larger valve 4 is opened and an additional flow of air is delivered to the conduit 15, through said by-pass circuit, so as to eliminate any damping condition immediately.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • General Details Of Gearings (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Nozzles (AREA)

Claims (5)

1. Un régulateur d'air pour un appareil respiratoire à détendeur à deux étages, dans lequel le second étage du régulateur comprend un premier circuit de passage d'air (117,10) commandé par une valve (11) par l'intermédiaire d'un diaphragme de manostat (13), caractérisé par le fait qu'un second circuit de passage d'air (4, 14) est formé dans le second étage du régulateur, en parallèle avec le premier circuit de passage d'air, ce second circuit de passage d'air (4, 14) étant normalement fermé et étant automatiquement mis en fonction dans le cas où l'utilisateur effectue une inhalation forcée ou en cas d'étouffement, afin de fournir au conduit respiratoire (15) dirigé vers l'embout buccal de l'utilisateur un écoulement d'air qui s'ajoute à l'écoulement d'air principal provenant du premier circuit (117, 10), pour satisfaire tout besoin d'air supplémentaire de l'utilisateur.
2. Un dispositif selon la revendication 1, carac, térisé par une structure de valve (5) qui ouvre ou ferme le second circuit de passage d'air, cette structure de valve (5) se trouvant en amont de la valve de commande (11) du premier circuit de passage d'air.
3. Un dispositif selon la revendications précédentes, caractérisé en ce que la structure de valve de commande du second circuit de passage d'air comprend un élément de valve (7) qui est équipé d'un trou calibré (117), communiquant du côté amont avec le conduit d'entrée d'air (3) et communiquant du côté aval avec le conduit d'alimentation dirigé vers la valve (11) du premier circuit de passage d'air du régulateur, cet élément de valve (7) étant appliqué avec une force élastique préétablie contre un siège de valve (10) du conduit d'entrée d'air (3), de façon à être soulevé par rapport au siège de valve (10) en cas de présence, en amont, d'une demande d'air dépassant le débit du trou calibré (117), grâce à quoi le conduit d'air (3) est mis en communication directe avec le conduit (15) qui fournit l'air à l'utilisateur, par l'intermédiaire d'une ouverture de bipasse appropriée (14).
4. Un dispositif selon la revendication 3, dans lequel l'élément de valve (7) comprend un petit piston mobile, que des moyens élastiques appliquent contre le siège de valve (4).
5. Un dispositif selon la revendication 3, dans lequel l'élément de valve est un élément fixe qui comporte un diaphragme élastique (707') pour fermer le siège de valve (4).
EP87116264A 1986-11-12 1987-11-05 Régulateur d'air pour appareil respiratoire Expired - Lifetime EP0269900B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87116264T ATE54637T1 (de) 1986-11-12 1987-11-05 Luftregler fuer atemschutzgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT12579/86A IT1200316B (it) 1986-11-12 1986-11-12 Dispositivo erogatore d aria per autorespiratori
IT1257986 1986-11-12

Publications (2)

Publication Number Publication Date
EP0269900A1 EP0269900A1 (fr) 1988-06-08
EP0269900B1 true EP0269900B1 (fr) 1990-07-18

Family

ID=11141830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116264A Expired - Lifetime EP0269900B1 (fr) 1986-11-12 1987-11-05 Régulateur d'air pour appareil respiratoire

Country Status (4)

Country Link
EP (1) EP0269900B1 (fr)
AT (1) ATE54637T1 (fr)
DE (1) DE3763808D1 (fr)
IT (1) IT1200316B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE502129C2 (sv) * 1993-11-05 1995-08-28 Poseidon Ind Ab Ventilanordning och andningsregulator innefattande sådan ventilanordning
CN106334280B (zh) 2015-07-15 2019-01-15 梅思安(苏州)安全设备研发有限公司 压强调节器组件

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3456642A (en) * 1966-12-27 1969-07-22 Automatic Sprinkler Corp Demand actuating means for alternate breathing supply
FR2050809A5 (fr) * 1969-06-25 1971-04-02 Bronnec Jean
US3783891A (en) * 1972-03-22 1974-01-08 Under Sea Industries Balanced regulator second stage
CA1120372A (fr) * 1978-02-13 1982-03-23 Max Isaacson Soupape d'inhalateur a la demande

Also Published As

Publication number Publication date
EP0269900A1 (fr) 1988-06-08
IT8612579A0 (it) 1986-11-12
ATE54637T1 (de) 1990-08-15
DE3763808D1 (de) 1990-08-23
IT1200316B (it) 1989-01-12

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