DE68923939D1 - Durchflussmesser mit veränderbarer Blendenöffnung. - Google Patents

Durchflussmesser mit veränderbarer Blendenöffnung.

Info

Publication number
DE68923939D1
DE68923939D1 DE68923939T DE68923939T DE68923939D1 DE 68923939 D1 DE68923939 D1 DE 68923939D1 DE 68923939 T DE68923939 T DE 68923939T DE 68923939 T DE68923939 T DE 68923939T DE 68923939 D1 DE68923939 D1 DE 68923939D1
Authority
DE
Germany
Prior art keywords
flow meter
variable aperture
aperture
variable
meter
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
DE68923939T
Other languages
English (en)
Other versions
DE68923939T2 (de
Inventor
Darrell W Guillaume
Michael Norton
Douglas F Devries
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.)
Bird Products Corp
Original Assignee
Bird Products Corp
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 Bird Products Corp filed Critical Bird Products Corp
Publication of DE68923939D1 publication Critical patent/DE68923939D1/de
Application granted granted Critical
Publication of DE68923939T2 publication Critical patent/DE68923939T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/087—Measuring breath flow
    • A61B5/0876—Measuring breath flow using means deflected by the fluid stream, e.g. flaps
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/22—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/40—Details of construction of the flow constriction devices
    • G01F1/42—Orifices or nozzles

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pulmonology (AREA)
  • Physiology (AREA)
  • Measuring Volume Flow (AREA)
DE68923939T 1988-12-16 1989-12-12 Durchflussmesser mit veränderbarer Blendenöffnung. Expired - Lifetime DE68923939T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/285,086 US4993269A (en) 1988-12-16 1988-12-16 Variable orifice flow sensing apparatus

Publications (2)

Publication Number Publication Date
DE68923939D1 true DE68923939D1 (de) 1995-09-28
DE68923939T2 DE68923939T2 (de) 1996-02-08

Family

ID=23092679

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68923939T Expired - Lifetime DE68923939T2 (de) 1988-12-16 1989-12-12 Durchflussmesser mit veränderbarer Blendenöffnung.

Country Status (4)

Country Link
US (1) US4993269A (de)
EP (1) EP0373886B1 (de)
JP (1) JP2968970B2 (de)
DE (1) DE68923939T2 (de)

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DE4229382A1 (de) * 1992-09-03 1994-03-10 Knorr Bremse Ag Durchflußmesser zur Bestimmung strömender Medien
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DE19617738C1 (de) * 1996-05-03 1997-06-19 Draegerwerk Ag Atemstromsensor
GB9618414D0 (en) * 1996-09-04 1996-10-16 Imi Norgren Ltd Improvements relating to compressed air lubricators
AUPO511397A0 (en) 1997-02-14 1997-04-11 Resmed Limited An apparatus for varying the flow area of a conduit
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US5925831A (en) * 1997-10-18 1999-07-20 Cardiopulmonary Technologies, Inc. Respiratory air flow sensor
US5970801A (en) 1997-12-30 1999-10-26 Bear Medical Systems, Inc. Variable orifice flow sensor
USD413825S (en) * 1998-09-14 1999-09-14 Cardiopulmonary Technologies, Inc. Respiratory air flow measuring device
US6116095A (en) * 1998-11-09 2000-09-12 White Consolidated Industries, Inc. Apparatus and method for measuring air flow from a duct system
US6135967A (en) 1999-04-26 2000-10-24 Fiorenza; Anthony Joseph Respiratory ventilator with automatic flow calibration
US6240919B1 (en) 1999-06-07 2001-06-05 Macdonald John J. Method for providing respiratory airway support pressure
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FR2816820B1 (fr) * 2000-11-17 2003-10-17 Chanoine Philippe Le Appareil de mesure de debits respiratoires
IL156918A0 (en) * 2001-02-07 2004-02-08 Nephros Inc Method and apparatus for a hemodiafiltration delivery module
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US20030097880A1 (en) 2001-11-29 2003-05-29 Ciobanu Calin I. Multi-stage variable orifice flow obstruction sensor
US7387123B2 (en) * 2001-11-30 2008-06-17 Viasys Manufacturing, Inc. Gas identification system and volumetrically correct gas delivery system
US7878980B2 (en) 2003-06-13 2011-02-01 Treymed, Inc. Gas flow diverter for respiratory monitoring device
FR2858236B1 (fr) * 2003-07-29 2006-04-28 Airox Dispositif et procede de fourniture de gaz respiratoire en pression ou en volume
US7131451B2 (en) * 2003-09-04 2006-11-07 Rivatek Incorporated Apparatus for controlling and metering fluid flow
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EP2063945B1 (de) 2006-09-07 2019-07-03 ResMed Ltd. Maske und flussgeneratorsystem
US7530278B2 (en) * 2006-11-02 2009-05-12 Rivatek, Inc. Fluid flow blender and methods
US8457706B2 (en) * 2008-05-16 2013-06-04 Covidien Lp Estimation of a physiological parameter using a neural network
US8302602B2 (en) 2008-09-30 2012-11-06 Nellcor Puritan Bennett Llc Breathing assistance system with multiple pressure sensors
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US7861596B2 (en) * 2009-01-28 2011-01-04 American Power Conversion Corporation Method and system for detecting air pressure neutrality in air containment zones
US20100218766A1 (en) * 2009-02-27 2010-09-02 Nellcor Puritan Bennett Llc Customizable mandatory/spontaneous closed loop mode selection
US8434479B2 (en) 2009-02-27 2013-05-07 Covidien Lp Flow rate compensation for transient thermal response of hot-wire anemometers
US8439037B2 (en) * 2009-12-01 2013-05-14 Covidien Lp Exhalation valve assembly with integrated filter and flow sensor
US8439036B2 (en) 2009-12-01 2013-05-14 Covidien Lp Exhalation valve assembly with integral flow sensor
US20110126832A1 (en) * 2009-12-01 2011-06-02 Nellcor Puritan Bennett Llc Exhalation Valve Assembly
US8469031B2 (en) * 2009-12-01 2013-06-25 Covidien Lp Exhalation valve assembly with integrated filter
US8469030B2 (en) 2009-12-01 2013-06-25 Covidien Lp Exhalation valve assembly with selectable contagious/non-contagious latch
USD655809S1 (en) 2010-04-27 2012-03-13 Nellcor Puritan Bennett Llc Valve body with integral flow meter for an exhalation module
USD655405S1 (en) 2010-04-27 2012-03-06 Nellcor Puritan Bennett Llc Filter and valve body for an exhalation module
USD653749S1 (en) 2010-04-27 2012-02-07 Nellcor Puritan Bennett Llc Exhalation module filter body
US8534119B2 (en) 2010-12-30 2013-09-17 Schneider Electric It Corporation System and method for air containment zone air leakage detection
US9629971B2 (en) 2011-04-29 2017-04-25 Covidien Lp Methods and systems for exhalation control and trajectory optimization
US8992158B2 (en) * 2011-09-07 2015-03-31 Caterpillar Inc. Apparatus and method for reinforcement of a load bearing structure
US9364624B2 (en) 2011-12-07 2016-06-14 Covidien Lp Methods and systems for adaptive base flow
WO2013088351A1 (en) * 2011-12-12 2013-06-20 Koninklijke Philips Electronics N.V. Differential pressure flow sensor
US9498589B2 (en) 2011-12-31 2016-11-22 Covidien Lp Methods and systems for adaptive base flow and leak compensation
US8820177B2 (en) * 2012-02-29 2014-09-02 Caterpillar Inc. Flow measurement unit
US9144658B2 (en) 2012-04-30 2015-09-29 Covidien Lp Minimizing imposed expiratory resistance of mechanical ventilator by optimizing exhalation valve control
US9016140B2 (en) 2012-11-20 2015-04-28 Fluid Handling Llc Valve having rotatable valve ball with calibrated orifice and coaxial upstream/downstream ports and angled taps to measure upstream/downstream pressures for flow measurement
USD731049S1 (en) 2013-03-05 2015-06-02 Covidien Lp EVQ housing of an exhalation module
USD731065S1 (en) 2013-03-08 2015-06-02 Covidien Lp EVQ pressure sensor filter of an exhalation module
USD731048S1 (en) 2013-03-08 2015-06-02 Covidien Lp EVQ diaphragm of an exhalation module
USD693001S1 (en) 2013-03-08 2013-11-05 Covidien Lp Neonate expiratory filter assembly of an exhalation module
USD701601S1 (en) 2013-03-08 2014-03-25 Covidien Lp Condensate vial of an exhalation module
USD736905S1 (en) 2013-03-08 2015-08-18 Covidien Lp Exhalation module EVQ housing
USD744095S1 (en) 2013-03-08 2015-11-24 Covidien Lp Exhalation module EVQ internal flow sensor
USD692556S1 (en) 2013-03-08 2013-10-29 Covidien Lp Expiratory filter body of an exhalation module
US9222817B2 (en) 2013-03-15 2015-12-29 Amphenol Thermometrics, Inc. Systems and methods for hybrid flow sensing
US9950135B2 (en) 2013-03-15 2018-04-24 Covidien Lp Maintaining an exhalation valve sensor assembly
US9329065B2 (en) * 2014-07-25 2016-05-03 General Electric Company Variable orifice flow sensor utilizing localized contact force
DE102015001102B4 (de) * 2015-01-30 2022-01-20 Illinois Tool Works Inc. Strömungsdetektor und Verfahren zur Überwachung eines Klebstoffflusses
US10245406B2 (en) 2015-03-24 2019-04-02 Ventec Life Systems, Inc. Ventilator with integrated oxygen production
US11247015B2 (en) 2015-03-24 2022-02-15 Ventec Life Systems, Inc. Ventilator with integrated oxygen production
USD775345S1 (en) 2015-04-10 2016-12-27 Covidien Lp Ventilator console
US11433211B2 (en) 2016-03-17 2022-09-06 Zoll Medical Corporation Flow sensor for ventilation
US10773049B2 (en) 2016-06-21 2020-09-15 Ventec Life Systems, Inc. Cough-assist systems with humidifier bypass
IT201600129661A1 (it) 2016-12-21 2018-06-21 Fimcim Spa Misuratore di pressione differenziale
CN107290007B (zh) * 2017-08-22 2024-02-20 湖南汉德史特仪表有限公司 一种垂直位移斜面靶式流量计
DE102017216691A1 (de) * 2017-09-20 2019-03-21 Hamilton Medical Ag Gas-Durchflusssensor für eine Beatmungsvorrichtung mit verminderter Störanfälligkeit gegenüber Feuchtigkeit im Sensorgehäuse
DE102018204801A1 (de) * 2018-03-28 2019-10-02 Hamilton Medical Ag Differenzdruck-Durchflusssensor für Beatmungsvorrichtungen mit verbesserter Drainage-Entwässerung
DE102018204800A1 (de) * 2018-03-28 2019-10-02 Hamilton Medical Ag Differenzdruck-Durchflusssensor für Beatmungsvorrichtungen mit verbesserter Entwässerung
DE102018204799A1 (de) 2018-03-28 2019-10-02 Hamilton Medical Ag Differenzdruck-Durchflusssensor für Beatmungsvorrichtungen mit verbessertem Strömungswiderstand mit mehrteiliger Klappe
CA3100163A1 (en) 2018-05-13 2019-11-21 Samir Saleh AHMAD Portable medical ventilator system using portable oxygen concentrators
US20210231476A1 (en) * 2018-07-27 2021-07-29 Imtmedical Ag Respiratory flow sensor
US11896767B2 (en) 2020-03-20 2024-02-13 Covidien Lp Model-driven system integration in medical ventilators
CN112461303B (zh) * 2020-11-05 2023-06-23 浙江工业大学 一种用于测量气体流量的流量计

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Also Published As

Publication number Publication date
US4993269A (en) 1991-02-19
EP0373886A1 (de) 1990-06-20
JP2968970B2 (ja) 1999-11-02
JPH0328717A (ja) 1991-02-06
DE68923939T2 (de) 1996-02-08
EP0373886B1 (de) 1995-08-23

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