WO1995009674A1 - A servo gas regulating valve - Google Patents
A servo gas regulating valve Download PDFInfo
- Publication number
- WO1995009674A1 WO1995009674A1 PCT/NO1994/000160 NO9400160W WO9509674A1 WO 1995009674 A1 WO1995009674 A1 WO 1995009674A1 NO 9400160 W NO9400160 W NO 9400160W WO 9509674 A1 WO9509674 A1 WO 9509674A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- valve body
- servo
- valve
- control valve
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
- F16K39/024—Devices for relieving the pressure on the sealing faces for lift valves using an auxiliary valve on the main valve
-
- 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
- A62B9/02—Valves
- A62B9/022—Breathing demand regulators
- A62B9/027—Breathing demand regulators pilot operated, i.e. controlled by valve means sensitive to a reduced downstream pressure
-
- 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
-
- 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
- the invention relates to a servo gas regulating valve comprising a housing having an inlet chamber and an outlet chamber, a main valve body cooperating with a seat separating the inlet chamber from the outlet chamber, a piston or the like separating the outlet chamber from a servo chamber, and a control valve arranged to be opened and closed by the main valve body.
- Systems for supplying breathing gas are generally based on a regulated supply from reservoirs containing gas/air under pressure. In such systems the gas flow generally is controlled so that it is in accordance with the demand, i.e. it is the question of demand systems.
- ordinary demand valves there is commonly a direct mechanical connection between a sensor diaphragm and the valve which opens or closes the nozzle opening.
- a gas regulating valve of the introductorily stated type which, according to the invention, is characterized in that the control valve brings about a controlled gas flow to the servo chamber, which entails that the main valve body is forced to move such that the seat of the control valve at all times rests sealingly against the valve body of the control valve.
- the valve according to the invention does not have stability problems as a consequence of friction in sealing means, and the regulating force is very small. Further, there is a minimum time delay between the control valve and the main valve, whereby a very precise control of large gas quantities is achieved.
- the invention used both as a demand valve and as a pressure reduction valve, has been found to be very advantageous. It is simple to produce, it is not very sensitive to pressure variations, and it has a very good capacity.
- Fig. 1 shows a cross-section of an embodiment of a regulating valve according to the invention used on a demand valve
- Fig. 2 shows a somewhat enlarged sectional view of the regulating valve.
- the illustrated demand valve consists of an outer casing 7 having a sensing diaphragm 8 which, through a lever 9 and an operating means 4, influences the gas regulating valve which is fixedly mounted to the casing 7.
- the regulating valve comprises a housing 1 having an inlet chamber I and an outlet chamber II, a hollow main valve body 2 cooperating with a seat 3 separating the inlet chamber I from the outlet chamber II, a piston 12 separating the outlet chamber II from the servo chamber III of the valve, and a control valve comprising a valve body 5 and a seat 6, and which is arranged to be opened and closed by the main valve body 2.
- the seat 6 of the control valve is arranged in a channel 15 extending axially through the main valve body 2 and connecting the inlet chamber I with the servo chamber III, and the control valve body 5 is connected to the operating means 4 of the demand valve through said channel.
- the control valve regulates the gas flow between the inlet chamber and the servo chamber through the channel 15.
- one side surface of the servo chamber III is constituted by one side surface of the piston 12 of which the other side surface faces the outlet chamber II and of which the central portion is rigidly connected to the main valve body 2.
- the piston 12 there could have been provided a diaphragm or the like.
- the main valve body 2 comprises a metal sleeve 11 which is pressed into a resilient sleeve 13 which constitutes the seat 6 of the control valve as well as the sealing surface between the main valve body 2 and the seat 3 of the main valve.
- the metal sleeve 11 is provided with s barbes (not shown) and is pressed into the central part of the resilient sleeve 13.
- the only spring which is used in the gas regulating valve is a small spring 10 which has the task to see to it that the valve body 5 of the control valve rests
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Control Of Fluid Pressure (AREA)
- Fluid-Driven Valves (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/619,767 US5690098A (en) | 1993-10-05 | 1994-10-04 | Servo gas regulating valve |
AU78651/94A AU686252B2 (en) | 1993-10-05 | 1994-10-04 | A servo gas regulating valve |
JP7510737A JPH09504854A (ja) | 1993-10-05 | 1994-10-04 | サーボ式ガス調節弁 |
EP94929687A EP0722351B1 (en) | 1993-10-05 | 1994-10-04 | A servo gas regulating valve |
DE69423505T DE69423505T2 (de) | 1993-10-05 | 1994-10-04 | Gasregulierungs-servoventil |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO933551A NO178121C (no) | 1993-10-05 | 1993-10-05 | Servo gassreguleringsventil |
NO933551 | 1993-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995009674A1 true WO1995009674A1 (en) | 1995-04-13 |
Family
ID=19896481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO1994/000160 WO1995009674A1 (en) | 1993-10-05 | 1994-10-04 | A servo gas regulating valve |
Country Status (7)
Country | Link |
---|---|
US (1) | US5690098A (no) |
EP (1) | EP0722351B1 (no) |
JP (1) | JPH09504854A (no) |
AU (1) | AU686252B2 (no) |
DE (1) | DE69423505T2 (no) |
NO (1) | NO178121C (no) |
WO (1) | WO1995009674A1 (no) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0509369D0 (en) * | 2005-05-07 | 2005-06-15 | Foss Nicholas J | A breathing apparatus demand valve |
US20090065007A1 (en) | 2007-09-06 | 2009-03-12 | Wilkinson William R | Oxygen concentrator apparatus and method |
JP5528899B2 (ja) | 2010-04-28 | 2014-06-25 | 興研株式会社 | 供給弁 |
US20120055483A1 (en) * | 2010-09-07 | 2012-03-08 | Wilkinson William R | Shutdown system and method for an oxygen concentrator |
BR112015008210A2 (pt) | 2012-10-12 | 2017-07-04 | Inova Labs Inc | métodos e sistemas de concentrador de oxigênio dual. |
EP2906278B1 (en) | 2012-10-12 | 2019-01-30 | Inova Labs, Inc. | Systems for the delivery of oxygen enriched gas |
AU2013328916A1 (en) | 2012-10-12 | 2015-05-14 | Inova Labs, Inc. | Oxygen concentrator systems and methods |
US9440179B2 (en) | 2014-02-14 | 2016-09-13 | InovaLabs, LLC | Oxygen concentrator pump systems and methods |
US11458274B2 (en) | 2016-05-03 | 2022-10-04 | Inova Labs, Inc. | Method and systems for the delivery of oxygen enriched gas |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2285155A1 (fr) * | 1974-09-23 | 1976-04-16 | Christianson Raymond | Regulateur agissant en fonction de la demande de gaz respirable actionne par clapet-pilote pour appareil de respiration |
NO151447B (no) * | 1981-08-28 | 1985-01-02 | Nils T Ottestad | Balansert gassregulatorventil. |
DE4040793A1 (de) * | 1990-12-15 | 1992-06-17 | Ulrich Gumpert | Elektronisch geregelter lungenautomat |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US591013A (en) * | 1897-10-05 | Safety-valve | ||
US873324A (en) * | 1907-03-04 | 1907-12-10 | August Michaels | Automatic valve. |
US2925824A (en) * | 1952-12-15 | 1960-02-23 | Edward A Rockwell | Fluid control valve |
US3945393A (en) * | 1972-02-29 | 1976-03-23 | Giuseppe Teatini | Regulating valve |
IT211686Z2 (it) * | 1987-01-28 | 1989-04-07 | Amf Mares Spa | Dispositivo regolare di pressione per il secondo stadio di riduzione degli apparecchi respiratori ad aria |
-
1993
- 1993-10-05 NO NO933551A patent/NO178121C/no not_active IP Right Cessation
-
1994
- 1994-10-04 WO PCT/NO1994/000160 patent/WO1995009674A1/en active IP Right Grant
- 1994-10-04 AU AU78651/94A patent/AU686252B2/en not_active Ceased
- 1994-10-04 US US08/619,767 patent/US5690098A/en not_active Expired - Fee Related
- 1994-10-04 EP EP94929687A patent/EP0722351B1/en not_active Expired - Lifetime
- 1994-10-04 JP JP7510737A patent/JPH09504854A/ja active Pending
- 1994-10-04 DE DE69423505T patent/DE69423505T2/de not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2285155A1 (fr) * | 1974-09-23 | 1976-04-16 | Christianson Raymond | Regulateur agissant en fonction de la demande de gaz respirable actionne par clapet-pilote pour appareil de respiration |
NO151447B (no) * | 1981-08-28 | 1985-01-02 | Nils T Ottestad | Balansert gassregulatorventil. |
DE4040793A1 (de) * | 1990-12-15 | 1992-06-17 | Ulrich Gumpert | Elektronisch geregelter lungenautomat |
Also Published As
Publication number | Publication date |
---|---|
NO933551L (no) | 1995-04-06 |
NO178121B (no) | 1995-10-16 |
EP0722351B1 (en) | 2000-03-15 |
DE69423505T2 (de) | 2000-06-29 |
AU686252B2 (en) | 1998-02-05 |
US5690098A (en) | 1997-11-25 |
NO933551D0 (no) | 1993-10-05 |
DE69423505D1 (de) | 2000-04-20 |
NO178121C (no) | 1996-01-24 |
AU7865194A (en) | 1995-05-01 |
JPH09504854A (ja) | 1997-05-13 |
EP0722351A1 (en) | 1996-07-24 |
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