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FR2360063A1 - Measuring head for gas flowmeters - has elastic diaphragm with cut out flap, leaving aperture whose size varies with gas flow - Google Patents

Measuring head for gas flowmeters - has elastic diaphragm with cut out flap, leaving aperture whose size varies with gas flow

Info

Publication number
FR2360063A1
FR2360063A1 FR7718573A FR7718573A FR2360063A1 FR 2360063 A1 FR2360063 A1 FR 2360063A1 FR 7718573 A FR7718573 A FR 7718573A FR 7718573 A FR7718573 A FR 7718573A FR 2360063 A1 FR2360063 A1 FR 2360063A1
Authority
FR
France
Prior art keywords
gas
gas flow
cut out
measuring head
whose size
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.)
Withdrawn
Application number
FR7718573A
Other languages
French (fr)
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.)
Japan Science and Technology Agency
Original Assignee
Research Development Corp of Japan
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
Priority claimed from US05/779,557 external-priority patent/US4083245A/en
Application filed by Research Development Corp of Japan filed Critical Research Development Corp of Japan
Publication of FR2360063A1 publication Critical patent/FR2360063A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Measuring 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physiology (AREA)
  • Molecular Biology (AREA)
  • Pulmonology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

Tête de détection et de mesure du débit d'écoulement d'un gaz dans un conduit. Elle comprend une membrane 5 qui présente un orifice pouvant être presque totalement ferme par un clapet 31 articulé par sa partie supérieure en 33 avec la membrane. Au fur et à mesure que le débit d'écoulement du gaz dans la tête il augmente, le clapet 31 s'éloigne de l'orifice afin de diminuer la résistance opposée par ce dernier à l'écoulement et de compenser ainsi l'augmentation de résistance due à l'accroissement des turbulences de l'écoulement du gaz. Domaine d'application : appareils de mesure du débit ventilatoire de patients souffrant de difficultés respiratoires, etc.Head for detecting and measuring the flow rate of a gas in a duct. It comprises a membrane 5 which has an orifice which can be almost completely closed by a valve 31 articulated by its upper part at 33 with the membrane. As the gas flow rate in the head increases, the valve 31 moves away from the orifice in order to reduce the resistance opposed by the latter to the flow and thus to compensate for the increase in resistance due to increased turbulence in gas flow. Field of application: devices for measuring the ventilation flow of patients with breathing difficulties, etc.

FR7718573A 1976-07-29 1977-06-16 Measuring head for gas flowmeters - has elastic diaphragm with cut out flap, leaving aperture whose size varies with gas flow Withdrawn FR2360063A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US70986776A 1976-07-29 1976-07-29
US05/779,557 US4083245A (en) 1977-03-21 1977-03-21 Variable orifice gas flow sensing head

Publications (1)

Publication Number Publication Date
FR2360063A1 true FR2360063A1 (en) 1978-02-24

Family

ID=27108328

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7718573A Withdrawn FR2360063A1 (en) 1976-07-29 1977-06-16 Measuring head for gas flowmeters - has elastic diaphragm with cut out flap, leaving aperture whose size varies with gas flow

Country Status (5)

Country Link
JP (1) JPS5316658A (en)
CA (1) CA1069342A (en)
DE (1) DE2723337A1 (en)
FR (1) FR2360063A1 (en)
SE (1) SE432023B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421593A1 (en) * 1978-04-06 1979-11-02 Research Dev Corp OXYGEN ABSORPTION MEASURING DEVICE
FR2457675A1 (en) * 1979-05-29 1980-12-26 Research Dev Corp PITOT TUBE PNEUMOTACHOGRAPHER
EP0331773A1 (en) * 1988-03-08 1989-09-13 Dräger Nederland B.V. Flow-resistant pipe for a gas flow meter
EP0331772A1 (en) * 1988-03-08 1989-09-13 Dräger Nederland B.V. Differential pressure meter for bidirectional flows of gas
EP2579776A4 (en) * 2010-06-29 2013-04-17 Rostrum Medical Innovations Inc RESPIRATORY TUBE OF COMPOUND MEMBRANE SPIROMETER

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256820A (en) * 1985-09-06 1987-03-12 Shinmeguro Keiki Kk Throttle device for flow rate measurement
DE3709776A1 (en) * 1987-03-25 1988-10-06 Eckardt Ag Method of measuring the flow of a medium through a pipeline or the like
US9476744B2 (en) * 2014-10-08 2016-10-25 Dieterich Standard, Inc. Integrated orifice plate assembly
NL2022125B1 (en) * 2018-12-03 2020-06-30 Suss Microtec Lithography Gmbh Apparatus for measuring a fluid flow through a pipe of a semiconductor manufacturing device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2989866A (en) * 1956-01-03 1961-06-27 Bendix Corp Cantilever beam flowmeter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421593A1 (en) * 1978-04-06 1979-11-02 Research Dev Corp OXYGEN ABSORPTION MEASURING DEVICE
FR2457675A1 (en) * 1979-05-29 1980-12-26 Research Dev Corp PITOT TUBE PNEUMOTACHOGRAPHER
EP0331773A1 (en) * 1988-03-08 1989-09-13 Dräger Nederland B.V. Flow-resistant pipe for a gas flow meter
EP0331772A1 (en) * 1988-03-08 1989-09-13 Dräger Nederland B.V. Differential pressure meter for bidirectional flows of gas
EP2579776A4 (en) * 2010-06-29 2013-04-17 Rostrum Medical Innovations Inc RESPIRATORY TUBE OF COMPOUND MEMBRANE SPIROMETER
EP2579776A1 (en) * 2010-06-29 2013-04-17 Rostrum Medical Innovations Inc. Spirometer breathing tube with compound membrane
US9931056B2 (en) 2010-06-29 2018-04-03 Rostrum Medical Innovations Inc. Spirometer breathing tube with compound membrane

Also Published As

Publication number Publication date
JPS5316658A (en) 1978-02-15
DE2723337A1 (en) 1978-02-02
CA1069342A (en) 1980-01-08
SE7705919L (en) 1978-01-30
SE432023B (en) 1984-03-12
JPS61567B2 (en) 1986-01-09

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Legal Events

Date Code Title Description
ST Notification of lapse