DE19907362C2 - Verfahren zum Mischen von Sauerstoff mit Luft in einem Beatmungsgerät mit einer Venturi-Düse - Google Patents
Verfahren zum Mischen von Sauerstoff mit Luft in einem Beatmungsgerät mit einer Venturi-DüseInfo
- Publication number
- DE19907362C2 DE19907362C2 DE19907362A DE19907362A DE19907362C2 DE 19907362 C2 DE19907362 C2 DE 19907362C2 DE 19907362 A DE19907362 A DE 19907362A DE 19907362 A DE19907362 A DE 19907362A DE 19907362 C2 DE19907362 C2 DE 19907362C2
- Authority
- DE
- Germany
- Prior art keywords
- flow
- oxygen
- venturi nozzle
- gas
- air
- 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
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. mouth-to-mouth respiration; 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
- 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. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
- A61M16/122—Preparation of respiratory gases or vapours by mixing different gases with dilution
- A61M16/125—Diluting primary gas with ambient air
- A61M16/127—Diluting primary gas with ambient air by Venturi effect, i.e. entrainment mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
- B01F23/19—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
- B01F23/191—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means characterised by the construction of the controlling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3121—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
- B01F25/31242—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
- B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
- B01F25/31421—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction the conduit being porous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/32—Injector mixers wherein the additional components are added in a by-pass of the main flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/432—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/432—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
- B01F25/4321—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa the subflows consisting of at least two flat layers which are recombined, e.g. using means having restriction or expansion zones
- B01F25/43211—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa the subflows consisting of at least two flat layers which are recombined, e.g. using means having restriction or expansion zones using a simple by-pass for separating and recombining the flow, e.g. by using branches of different length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
- B01F33/821—Combinations of dissimilar mixers with consecutive receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2111—Flow rate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
- B01F35/2211—Amount of delivered fluid during a period
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
- B01F35/833—Flow control by valves, e.g. opening intermittently
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Accessories For Mixers (AREA)
Description
Claims (4)
- - mittels einer von der Sauerstoffquelle (2) abzweigenden ersten Bypassleitung (14) und einem zweiten Dosierventil (15) einen veränderbaren ersten Sauerstoff-Teilstrom in den Ansaug kanal (11) einzudosieren,
- - anströmseitig der Venturi-Düse (7) ein erstes Dosierventil (5) anzuordnen, um einen Gesamtgasfluss V abströmseitig der Venturi-Düse (7) zu verändern,
- - den Gesamtgasfluss V mit einer ersten Flussmesseinrichtung (9) abströmseitig des Gasauslasses (8) der Venturi-Düse (7) zu messen,
- - für einen Gesamtgasfluss V oberhalb von 40 Liter/Minute mit einer von der Sauerstoffquelle (2) abzweigenden zweiten Bypass leitung (17) und einem dritten Dosierventil (18) einen zweiten Sauerstoff-Teilstrom am Gasauslass (8) der Venturi-Düse (7) einzuspeisen.
FIO2 = 1 - 0,79 × VL/V
zu berechnen.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19907362A DE19907362C2 (de) | 1999-02-20 | 1999-02-20 | Verfahren zum Mischen von Sauerstoff mit Luft in einem Beatmungsgerät mit einer Venturi-Düse |
FR0001197A FR2789913B1 (fr) | 1999-02-20 | 2000-01-31 | Dispositif a venturi de melange d'au moins deux composants gazeux |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19907362A DE19907362C2 (de) | 1999-02-20 | 1999-02-20 | Verfahren zum Mischen von Sauerstoff mit Luft in einem Beatmungsgerät mit einer Venturi-Düse |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19907362A1 DE19907362A1 (de) | 2000-08-31 |
DE19907362C2 true DE19907362C2 (de) | 2003-04-17 |
Family
ID=7898304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19907362A Expired - Lifetime DE19907362C2 (de) | 1999-02-20 | 1999-02-20 | Verfahren zum Mischen von Sauerstoff mit Luft in einem Beatmungsgerät mit einer Venturi-Düse |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE19907362C2 (de) |
FR (1) | FR2789913B1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004030747A1 (de) * | 2004-06-25 | 2006-01-19 | Weinmann Geräte für Medizin GmbH + Co. KG | Verfahren und Vorrichtung zum Mischen von Sauerstoff und Luft |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10002000A1 (de) * | 2000-01-19 | 2001-08-09 | Bosch Gmbh Robert | Zerstäubungsanordnung |
DE10125863A1 (de) * | 2001-05-25 | 2002-11-28 | Air Liquide Gmbh | Verfahren zum Mischen von Gasen und Gasmischer |
DE10160709B4 (de) * | 2001-12-11 | 2015-12-17 | Tpi - Tecnimont Planung Und Industrieanlagenbau Gmbh | Vorrichtung zum Mischen einer gasförmigen und einer flüssigen Komponente im überkritischen Bereich |
DE10205845C1 (de) * | 2002-02-13 | 2002-10-31 | Draeger Medical Ag | Gasmischer mit mehreren Ejektoren für ein medizinisches Beatmungsgerät |
EP2322266A1 (de) * | 2009-11-02 | 2011-05-18 | Leibniz-Institut für Agrartechnik Potsdam-Bornim e.V. (ATB) | Verfahren und Vorrichtung zum Entfernen von Schwefelwasserstoff aus Biogas |
DE202011102318U1 (de) | 2011-06-25 | 2011-11-10 | Dräger Medical GmbH | Vorrichtung zur Dosierung von Sauerstoff für ein Anästhesiegerät |
GB2550130B (en) | 2016-05-09 | 2021-01-27 | James Muggleton Kevin | System including passive blender for use with gas from an unconventional source |
KR20200056150A (ko) | 2018-11-14 | 2020-05-22 | 엘지전자 주식회사 | 연료 공급 모듈 및 이를 이용한 연료전지용 연료 개질 장치 |
EP3705152B1 (de) | 2019-03-07 | 2022-10-26 | Löwenstein Medical Technology S.A. | Beatmungsgerät mit mischerkammer und mischerkammer für ein beatmungsgerät |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2379551A (en) * | 1944-04-27 | 1945-07-03 | Talley Henry Alfred Ernest | Apparatus for mixing gases |
EP0243104A2 (de) * | 1986-04-18 | 1987-10-28 | Fluid Technology Limited | System zum Injizieren von Flüssigkeit |
DE4205126A1 (de) * | 1992-02-20 | 1993-08-26 | Messer Griesheim Gmbh | Verfahren zur herstellung eines gasgemisches |
EP0691137A2 (de) * | 1994-07-05 | 1996-01-10 | pneuPAC Limited | Gasmischeinrichtungen für Wiederbelegungs- und Beatmungsvorrichtungen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2637638A (en) * | 1947-06-16 | 1953-05-05 | Cutler Hammer Inc | Method of and apparatus for mixing combustible gases |
US3689237A (en) * | 1970-02-19 | 1972-09-05 | North American Utility Constru | Fuel gas pipeline system |
JPS55166163A (en) * | 1979-06-13 | 1980-12-25 | Citizen Watch Co Ltd | Controller for anesthetic gas |
US4277254A (en) * | 1980-02-15 | 1981-07-07 | Energy Systems, Incorporated | Control system and apparatus for producing compatible mixtures of fuel gases |
US5246026A (en) * | 1992-05-12 | 1993-09-21 | Proudman Systems, Inc. | Fluid measuring, dilution and delivery system |
-
1999
- 1999-02-20 DE DE19907362A patent/DE19907362C2/de not_active Expired - Lifetime
-
2000
- 2000-01-31 FR FR0001197A patent/FR2789913B1/fr not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2379551A (en) * | 1944-04-27 | 1945-07-03 | Talley Henry Alfred Ernest | Apparatus for mixing gases |
EP0243104A2 (de) * | 1986-04-18 | 1987-10-28 | Fluid Technology Limited | System zum Injizieren von Flüssigkeit |
DE4205126A1 (de) * | 1992-02-20 | 1993-08-26 | Messer Griesheim Gmbh | Verfahren zur herstellung eines gasgemisches |
EP0691137A2 (de) * | 1994-07-05 | 1996-01-10 | pneuPAC Limited | Gasmischeinrichtungen für Wiederbelegungs- und Beatmungsvorrichtungen |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004030747A1 (de) * | 2004-06-25 | 2006-01-19 | Weinmann Geräte für Medizin GmbH + Co. KG | Verfahren und Vorrichtung zum Mischen von Sauerstoff und Luft |
Also Published As
Publication number | Publication date |
---|---|
FR2789913B1 (fr) | 2005-08-05 |
FR2789913A1 (fr) | 2000-08-25 |
DE19907362A1 (de) | 2000-08-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: DRAEGER MEDICAL AG & CO. KGAA, 23558 LUEBECK, DE |
|
8304 | Grant after examination procedure | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: DRAEGER MEDICAL AG & CO. KG, 23558 LUEBECK, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: DRAEGER MEDICAL GMBH, 23558 LUEBECK, DE |
|
R081 | Change of applicant/patentee |
Owner name: DRAEGER MEDICAL GMBH, DE Free format text: FORMER OWNER: DRAEGER MEDICAL AG & CO. KG, 23558 LUEBECK, DE Effective date: 20110201 Owner name: DRAEGERWERK AG & CO. KGAA, DE Free format text: FORMER OWNER: DRAEGER MEDICAL AG & CO. KG, 23558 LUEBECK, DE Effective date: 20110201 |
|
R081 | Change of applicant/patentee |
Owner name: DRAEGERWERK AG & CO. KGAA, DE Free format text: FORMER OWNER: DRAEGER MEDICAL GMBH, 23558 LUEBECK, DE |
|
R071 | Expiry of right |