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GB1248412A - Oxygen-air diluter for breathing apparatus - Google Patents

Oxygen-air diluter for breathing apparatus

Info

Publication number
GB1248412A
GB1248412A GB55601/68A GB5560168A GB1248412A GB 1248412 A GB1248412 A GB 1248412A GB 55601/68 A GB55601/68 A GB 55601/68A GB 5560168 A GB5560168 A GB 5560168A GB 1248412 A GB1248412 A GB 1248412A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
oxygen
valve
air
chamber
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
Application number
GB55601/68A
Inventor
Herbert F Veit
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.)
Robertshaw Controls Co
Original Assignee
Robertshaw Controls Co
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 Robertshaw Controls Co filed Critical Robertshaw Controls Co
Publication of GB1248412A publication Critical patent/GB1248412A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
    • 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
    • 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
    • Y10T137/1842—Ambient condition change responsive
    • Y10T137/1939—Atmospheric
    • Y10T137/2012—Pressure
    • 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2564—Plural inflows
    • Y10T137/2572—One inflow supplements another
    • 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
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7764—Choked or throttled pressure type
    • 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
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7838—Plural
    • Y10T137/7839—Dividing and recombining in a single flow path
    • Y10T137/784—Integral resilient member forms plural valves

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Emergency Medicine (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

1,248,412. Respiratory appliances. ROBERTSHAW CONTROLS CO. 22 Nov., 1968 [24 Nov., 1967], No. 55601/68. Heading AST. An oxygen-air diluter for breathing apparatus comprises an oxygen inlet 12, an air inlet 64, an outlet 14 to the user, a variable flow nozzle 18 delivering a jet of oxygen into a venturi 22 and entraining air with it, said nozzle having a movable valve member 24 controlled by means responsive to demand at the outlet. Air inlet from the atmosphere is controlled by a flexible valve disc 56, the maximum extent of opening of the valve 56 being limited by an aneroid bellows 52, in response to atmospheric pressure. The means controlling the valve member 24 comprises a flexible diaphragm 26, with a bleed port 28, and exposed on one side to the inlet oxygen, and on the other to a bleed chamber 30 which has an orifice 32 controlled by a flapper valve 34 such that when the orifice 32 is open oxygen leaves the bleed chamber 30 faster than it enters through the bleed port 28, creating a pressure difference across the diaphragm 26 which moves valve member 24 up to allow oxygen to flow through the nozzle. Pressure at the outlet is communicated by a port 45 to a chamber 36 on one side of a diaphragm 44, the other side of which is exposed to the atmosphere through a port 49. Diaphragm 44 has a button 38 fixed to its centre. When the user breathes in the pressure drops in chamber 36 forcing diaphragm 44 down so that button 38 actuates the flapper valve, and hence the valve member 24 rises. Air enters through slots 64 in a cylindrical wall of a housing 60. An aneroid bellows is mounted on the atmospheric side of diaphragm 44 such that its movable end abuts on the centre of diaphragm 44 so that as atmospheric pressure drops the diaphragm is pressed down to increase the amount of oxygen delivered.
GB55601/68A 1967-11-24 1968-11-22 Oxygen-air diluter for breathing apparatus Expired GB1248412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68565767A 1967-11-24 1967-11-24

Publications (1)

Publication Number Publication Date
GB1248412A true GB1248412A (en) 1971-10-06

Family

ID=24753152

Family Applications (1)

Application Number Title Priority Date Filing Date
GB55601/68A Expired GB1248412A (en) 1967-11-24 1968-11-22 Oxygen-air diluter for breathing apparatus

Country Status (3)

Country Link
US (1) US3526241A (en)
FR (1) FR1594837A (en)
GB (1) GB1248412A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683958A (en) * 1970-11-30 1972-08-15 Sperry Rand Corp Power transmission
FR2174782B1 (en) * 1972-03-10 1975-03-21 Lafourcade Jean Michel
US3805823A (en) * 1972-05-23 1974-04-23 Tokyo Gas Co Ltd Pressure regulators
US3782402A (en) * 1972-10-24 1974-01-01 Bendix Corp Servo controlled oxygen regulator
DE2404062C3 (en) * 1974-01-29 1978-04-20 Draegerwerk Ag, 2400 Luebeck Breathing gas supply regulators, in particular for high-altitude breathing apparatus
IT1018282B (en) * 1974-08-09 1977-09-30 Fernando G DISPENSER GROUP FOR BREATHING EQUIPMENT WITH ONE OR MORE FLUCTUATING VALVES OPERATING ON THE BASIS OF A PERFECTED SYSTEM WITH FULCRUMS WITHOUT MECHANICAL JOINTS
US4332268A (en) * 1979-01-16 1982-06-01 Nippondenso Co., Ltd. Atmospheric pressure compensation device
AU614731B2 (en) * 1986-12-09 1991-09-12 Maersk Indoplas Pty Limited Oxygen dilution apparatus
US5010844A (en) * 1988-07-12 1991-04-30 Orion Machinery Co., Ltd. Vacuum-pressure supply device
US4944249A (en) * 1988-07-12 1990-07-31 Orion Machinery Co., Ltd. Vacuum-pressure supply device
US5372129A (en) * 1992-06-23 1994-12-13 Ryder; Steven L. Oxygen dilution device for maintaining an essentially constant proportion of primary gas in a diluent gas
US5678541A (en) 1996-03-15 1997-10-21 Garraffa; Dean R. Breathing regulator apparatus having automatic flow control
GB0305118D0 (en) * 2003-03-06 2003-04-09 Intersurgical Ltd Improvements relating to venturi devices
GB0305117D0 (en) * 2003-03-06 2003-04-09 Intersurgical Ltd An adjustable venturi device
US7210479B2 (en) * 2003-11-07 2007-05-01 Van Den Akker Erik Hyperoxic breathing system
GB0426676D0 (en) * 2004-12-04 2005-01-05 Concept 2 Manufacture Design L A regulator for medical use
CN103182142B (en) * 2011-12-30 2016-04-20 北京谊安医疗系统股份有限公司 Mixed oxygen valve
CN104208794B (en) * 2013-05-31 2019-02-05 北京谊安医疗系统股份有限公司 Mixed oxygen valve and ventilator with the mixed oxygen valve
US20230081989A1 (en) * 2021-09-13 2023-03-16 Avox Systems Inc. Oxygen control system with improved pressure regulator

Also Published As

Publication number Publication date
US3526241A (en) 1970-09-01
FR1594837A (en) 1970-06-08

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