CA1190975A - Ultrasonic air flow transducer for high humidity environments - Google Patents
Ultrasonic air flow transducer for high humidity environmentsInfo
- Publication number
- CA1190975A CA1190975A CA000410518A CA410518A CA1190975A CA 1190975 A CA1190975 A CA 1190975A CA 000410518 A CA000410518 A CA 000410518A CA 410518 A CA410518 A CA 410518A CA 1190975 A CA1190975 A CA 1190975A
- Authority
- CA
- Canada
- Prior art keywords
- transducer assembly
- transducer
- cavity
- housing
- fluid
- 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
Links
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 230000002411 adverse Effects 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims 2
- 238000009423 ventilation Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 239000011358 absorbing material Substances 0.000 abstract description 10
- 239000006096 absorbing agent Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 210000004072 lung Anatomy 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229920006370 Kynar Polymers 0.000 description 1
- 208000019693 Lung disease Diseases 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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—Measuring devices for evaluating the respiratory organs
- A61B5/087—Measuring breath flow
-
- 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
- G01F1/66—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Physiology (AREA)
- Pulmonology (AREA)
- Fluid Mechanics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Electromagnetism (AREA)
- Biomedical Technology (AREA)
- General Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measuring Volume Flow (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/316,177 US4425804A (en) | 1981-10-29 | 1981-10-29 | Ultrasonic air flow transducer for high humidity environments |
| US316,177 | 1994-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1190975A true CA1190975A (en) | 1985-07-23 |
Family
ID=23227853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000410518A Expired CA1190975A (en) | 1981-10-29 | 1982-08-31 | Ultrasonic air flow transducer for high humidity environments |
Country Status (5)
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH655574B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1982-03-01 | 1986-04-30 | ||
| US4598593A (en) * | 1984-05-14 | 1986-07-08 | The United States Of America As Represented By The United States Department Of Energy | Acoustic cross-correlation flowmeter for solid-gas flow |
| DE3518266A1 (de) * | 1985-05-21 | 1986-11-27 | Siemens AG, 1000 Berlin und 8000 München | Stroemungsmesser |
| WO1989011245A1 (en) * | 1988-05-20 | 1989-11-30 | Albion Instruments | Patient interfacing system and method to prevent water contamination |
| US5233996A (en) * | 1988-05-20 | 1993-08-10 | Boc Health Care, Inc. | Patient interfacing system and method to prevent water contamination |
| US5033312A (en) * | 1989-11-06 | 1991-07-23 | Bicore Monitoring Systems | Gas flow meter housing |
| GB9021441D0 (en) * | 1990-10-02 | 1990-11-14 | British Gas Plc | Measurement system |
| US5097212A (en) * | 1991-01-03 | 1992-03-17 | The United States Of America As Represented By The Secretary Of The Army | Cell for measuring electrical conductivity and ion content of vapor |
| US5463906A (en) * | 1994-01-24 | 1995-11-07 | Triton Technology, Inc. | Interchangeable disposable acoustic for use with an ultrasonic flowmeter, particularly during extracorporeal measurement of blood flow |
| GB9417421D0 (en) * | 1994-08-30 | 1994-10-19 | Williams Deryk J P | Lung desease management system |
| JP3935357B2 (ja) * | 2001-02-05 | 2007-06-20 | サーパス工業株式会社 | 超音波流量計 |
| AT6511U3 (de) * | 2003-07-16 | 2004-09-27 | Avl List Gmbh | Ultraschall-gasdurchflusssensor sowie vorrichtung zur messung von abgas-strömungen von verbrennungskraftmaschinen sowie ein verfahren zur ermittlung des durchflusses von gasen |
| DE10361564A1 (de) * | 2003-12-23 | 2005-07-28 | Gebr. Schmidt Fabrik für Feinmechanik GmbH & Co. KG | Modularer Hantelkopfsensor |
| US9140593B2 (en) * | 2008-04-22 | 2015-09-22 | Cameron International Corporation | Smooth bore, chordal transit-time ultrasonic meter and method |
| CN102655807B (zh) * | 2009-12-18 | 2016-04-20 | 马奎特紧急护理公司 | 用于呼吸设备中的超声波测量的气量计 |
| US20180333076A1 (en) * | 2017-05-17 | 2018-11-22 | Ndd Medizintechnik Ag | Breathing tube for use in lung function diagnostics |
| DE102017006909A1 (de) * | 2017-07-20 | 2019-01-24 | Diehl Metering Gmbh | Messmodul zur Ermittlung einer Fluidgröße |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3026868A (en) | 1962-03-27 | Respiration measuring apparatus and method | ||
| US2785911A (en) | 1954-10-14 | 1957-03-19 | American Hard Rubber Co | Non-corrosive flexible hose coupling |
| DE1176312B (de) | 1960-09-15 | 1964-08-20 | Dr Wilhelm Knipping | Spirographisches Geraet |
| DE1283622B (de) | 1965-06-18 | 1968-11-21 | Tech Fortschritt Mbh Ges | Schalldaempfendes Verbindungs- und Wandeinfuehrungsstueck mit Abdeckrosette fuer Rohrleitungen |
| US3575050A (en) | 1968-12-04 | 1971-04-13 | Panametrics | Fluid flowmeter |
| US4003252A (en) * | 1974-08-16 | 1977-01-18 | The Institutes Of Medical Sciences | Acoustical wave flowmeter |
| US4114607A (en) | 1976-02-11 | 1978-09-19 | Chesebrough-Pond's Inc. | Inhalation device |
| US4164865A (en) | 1977-02-22 | 1979-08-21 | The Perkin-Elmer Corporation | Acoustical wave flowmeter |
| US4158360A (en) | 1978-01-26 | 1979-06-19 | Projects In Health, Inc. | Expiratory flow meter |
| DE2906742A1 (de) * | 1978-02-23 | 1979-09-20 | Martin Leslie Tatnall | Einrichtung zur ueberwachung der konzentration eines anaestheticums in der ausatmungsluft eines patienten |
| US4167667A (en) * | 1978-06-12 | 1979-09-11 | The Perkin-Elmer Corporation | Respiratory gas moisture separator system for mass spectrometer monitoring systems |
-
1981
- 1981-10-29 US US06/316,177 patent/US4425804A/en not_active Expired - Fee Related
-
1982
- 1982-08-31 CA CA000410518A patent/CA1190975A/en not_active Expired
- 1982-09-09 EP EP82108339A patent/EP0078381B1/en not_active Expired
- 1982-09-09 DE DE8282108339T patent/DE3278309D1/de not_active Expired
- 1982-10-28 JP JP57188299A patent/JPS5883218A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5883218A (ja) | 1983-05-19 |
| EP0078381A2 (en) | 1983-05-11 |
| JPH0311414B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-02-15 |
| EP0078381B1 (en) | 1988-04-06 |
| US4425804A (en) | 1984-01-17 |
| EP0078381A3 (en) | 1984-12-27 |
| DE3278309D1 (en) | 1988-05-11 |
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| JPS6290532A (ja) | 気泡検出用超音波センサ | |
| JPS6125291B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
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| Buess et al. | Design and construction of a pulsed ultrasonic air flowmeter | |
| KR900017546A (ko) | 호흡감지용 마이크로 공극파 탐지장치 | |
| CN210166005U (zh) | 一种压力损失较小的气体超声波流量计 | |
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| RU193583U1 (ru) | Спирометр | |
| RU2821824C1 (ru) | Ультразвуковой спирограф |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20020831 |