DE102004030747A1 - Air-oxygen breathing mixtures, for emergency respirators, are produced using supply of pressurized oxygen to suck atmospheric air through venturi nozzle eductor - Google Patents
Air-oxygen breathing mixtures, for emergency respirators, are produced using supply of pressurized oxygen to suck atmospheric air through venturi nozzle eductor Download PDFInfo
- Publication number
- DE102004030747A1 DE102004030747A1 DE200410030747 DE102004030747A DE102004030747A1 DE 102004030747 A1 DE102004030747 A1 DE 102004030747A1 DE 200410030747 DE200410030747 DE 200410030747 DE 102004030747 A DE102004030747 A DE 102004030747A DE 102004030747 A1 DE102004030747 A1 DE 102004030747A1
- Authority
- DE
- Germany
- Prior art keywords
- oxygen
- venturi
- venturi nozzle
- nozzle
- mixing
- 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- Withdrawn
Links
Classifications
-
- 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
-
- 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
- B01F25/3123—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with two or more Venturi elements
- B01F25/31232—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with two or more Venturi elements used simultaneously
-
- 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
- B01F25/31243—Eductor or eductor-type venturi, i.e. the main flow being injected through the venturi with high speed in the form of a jet
-
- 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
- B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
- B01F25/4335—Mixers with a converging-diverging cross-section
-
- 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
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Mischen von Sauerstoff und Luft, bei dem der Sauerstoff einer Sauerstoffquelle entnommen und einer Luftströmung beigemischt wird.The The invention relates to a method for mixing oxygen and Air in which the oxygen is taken from an oxygen source and an airflow is added.
Die Erfindung betrifft darüber hinaus eine Vorrichtung zum Mischen von Sauerstoff und Luft, die mindestens eine Sauerstoffquelle und mindestens eine Mischeinrichtung zur Vermengung des Sauerstoffs und einer Luftströmung aufweist.The Invention relates to this In addition, a device for mixing oxygen and air, at least an oxygen source and at least one mixing device for mixing of the oxygen and an air flow.
Ein
derartiges Verfahren und eine derartige Vorrichtung werden bereits
in der
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren der einleitend genannten Art derart zu verbessern, daß innerhalb eines großen Flow- und Druckbereiches eine Mischung von Luft und Sauerstoff zur Erreichung einer variabel vorgebbaren Sauerstoffkonzentration unterstützt wird.task It is the object of the present invention to provide a method of the be improved in such a way that within a large flow and pressure range a mixture of air and oxygen to achieve a variably predeterminable oxygen concentration is supported.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Sauerstoff über mindestens eine Venturidüse der Lüftströmung zugeführt wird.These Task is inventively characterized solved, that the Oxygen over at least one Venturi nozzle the Lüftströmung is supplied.
Weitere Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung der einleitend genannten Art derart zu konstruieren, daß ein einfacher konstruktiver Aufbau bereitgestellt wird.Further Object of the present invention is to provide a device of Initially mentioned type such that a simple constructive structure is provided.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Mischeinrichtung mit mindestens einer Venturidüse versehen ist.These Task is inventively characterized solved, that the Mixer is provided with at least one venturi.
Die Verwendung einer Venturidüse zur Beimischung des Sauerstoffs zur Luft ermöglicht eine äußerst wirkungsvolle Durchmischung des Sauerstoffes und der Luft. Darüber hinaus ist es möglich, auf eine separate Fördereinrichtung im Bereich der Luftzufuhr zu verzichten und die Förderung der Luftströmung durch die von der Venturidüse erzeugte Gasströmung vorzugeben. Der aus der Venturidüse ausströmende Sauerstoff erzeugt eine Sogwirkung, die es ermöglicht, die Luft aus einer Umgebung anzusaugen.The Use of a Venturi nozzle to admix the oxygen to the air allows a very effective Mixing of the oxygen and the air. In addition, it is possible on a separate conveyor in the field of air supply and the promotion the air flow through the Venturi nozzle generated gas flow pretend. The effluent from the Venturi nozzle oxygen creates a suction effect that allows the air to escape To suck in the environment.
Eine einfache Einstellbarkeit der Sauerstoffdosierung wird dadurch unterstützt, daß die Venturidüse durch einen verstellbaren Ventilkegel reguliert wird.A easy adjustability of the oxygen dosage is supported by the fact that the Venturi nozzle an adjustable poppet is regulated.
Zur Erreichung einer gleichmäßigen Strömung ist vorgesehen, daß die Sauerstoffzufuhr über einen verstellbaren Ringspalt der Venturidüse reguliert wird.to Achieving a steady flow is provided that the Oxygen supply via a adjustable annular gap of the Venturi nozzle is regulated.
Eine gute Steuerbarkeit wird ebenfalls dadurch unterstützt, daß als Dosierventil für die Sauerstoffzufuhr ein Proportionalventil verwendet wird.A Good controllability is also supported by the fact that as a metering valve for the Oxygen supply a proportional valve is used.
Gemäß einer weiteren Ausführungsform ist es auch möglich, daß die Sauerstoffzufuhr über ein elastisches Material der Venturidüse durch druckabhängige Aufweitung reguliert wird.According to one another embodiment it is also possible that the Oxygen supply over an elastic material of the Venturi nozzle by pressure-dependent expansion is regulated.
Eine weitere Möglichkeit zur Verbesserung der Steuerbarkeit besteht darin, daß die Sauerstoffzufuhr von mindestens einem Dosierventil reguliert wird.A another possibility to improve the controllability is that the oxygen supply is regulated by at least one metering valve.
Gemäß einer weiteren Ausführungsform wird vorgesehen, daß mindestens zwei Venturidüsen zur Dosierung des Sauerstoffs verwendet werden.According to one another embodiment it is provided that at least two venturi nozzles be used for metering the oxygen.
Zur Unterstützung eines Betriebs der Venturidüsen in einem genauen Steuerbarkeitsbereich wird vorgeschlagen, daß parallel zur Venturidüse der Sauerstoff über eine Bypaßleitung einer Mischkammer zugeführt wird.to support an operation of the Venturi nozzles in a precise range of controllability it is proposed that parallel to the Venturi nozzle the oxygen over a bypass line fed to a mixing chamber becomes.
Ebenfalls ist daran gedacht, daß in einem ersten Dosierzustand lediglich eine Venturidüse und in mindestens einer weiteren Dosierstufe mindestens zwei Venturidüsen parallel zueinander betrieben werden.Also is remembered that in a first dosing state only a venturi and in at least one further dosing at least two Venturi nozzles in parallel operated to each other.
Gemäß einer zusätzlichen Ausführungsform ist es auch möglich, daß in jedem Dosierzustand nur eine Venturidüse betrieben wird.According to one additional Embodiment is it also possible that in each dosing state only one Venturi nozzle is operated.
Zur Vermeidung eines zu hohen Druckes wird vorgeschlagen, daß der Sauerstoff einer Sauerstoffquelle über eine Druckbegrenzung entnommen wird.to Avoidance of excessive pressure is suggested that the oxygen an oxygen source over a pressure limit is removed.
Eine Zufuhr von Umgebungsluft wird dadurch erreicht, daß Umgebungsluft über einen Ansaugkanal der Mischkammer zugeführt wird.A Supply of ambient air is achieved in that ambient air over a Intake passage of the mixing chamber is supplied.
Zur Kanalisierung der Strömung ist vorgesehen, daß aus der Venturidüse austretendes Gas einer Fangdüse zugeführt wird.to Channeling of the flow is provided that from the Venturi nozzle escaping gas of a catching nozzle supplied becomes.
Eine Laminarisierung der Strömung wird dadurch unterstützt, daß das der Fangdüse entströmende Gasgemisch einer Beruhigungsstrecke zugeführt wird.A Laminarization of the flow is supported by that this the catching nozzle flowing from Gas mixture is fed to a calming section.
Ein Wiederaufbau des Druckes nach der Laminarisierung wird dadurch unterstützt, daß der Beruhigungsstrecke ein Diffusor nachgeschaltet wird.One Reconstruction of the pressure after laminarization is assisted by the calming section a diffuser is connected downstream.
Eine typische Anwendung wird dadurch definiert, daß die Venturidüse im Bereich eines Gerätes zur Durchführung einer Notfall- und Transportbeatmung verwendet wird.A typical application is defined by the fact that the Venturi nozzle in the range a device for execution an emergency and transport ventilation is used.
Zur exakten Einhaltung einer vorgegebenen Sauerstoffkonzentration wird vorgeschlagen, daß eine Konzentration des Sauerstoffs im Gasgemisch gemessen wird.to exact compliance with a given oxygen concentration is suggested that a Concentration of oxygen in the gas mixture is measured.
Insbesondere erweist es sich als vorteilhaft, daß in Abhängigkeit von einer gemessenen Sauerstoffkonzentration die Dosierung über die Venturidüse geregelt wird.Especially it proves to be advantageous that, depending on a measured Oxygen concentration controlled the dosage through the venturi becomes.
Eine weitere Annäherung an weitere vorgegebene Steuerparameter kann dadurch erreicht werden, daß ein Volumenstrom gemessen wird.A further approach to further predetermined control parameters can be achieved thereby the existence Volume flow is measured.
Zur Unterstützung mobiler Anwendungen ist insbesondere daran gedacht, daß der Sauerstoff einer Druckgasflasche entnommen wird.to support mobile applications is especially thought that the oxygen a compressed gas cylinder is removed.
In den Zeichnungen sind Ausführungsbeispiele der Erfindung schematisch dargestellt. Es zeigen:In The drawings are exemplary embodiments of the invention shown schematically. Show it:
Gemäß der Ausführungsform
in
Die
Injektoren (
Jeder
der Injektoren (
Das
Dosierventil (
Die
im Bereich der Volumenstrommessung (
Gemäß der Ausführungsform
in
Gemäß der Ausführungsform
in
Gemäß der Ausführungsform
in
Die
Venturidüse
(
Durch
das Dosierventil (
Gemäß der Ausführungsvariante
in
Bei
Temperaturänderungen
kompensiert das nachgiebige Material der Venturidüse (
Claims (40)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410030747 DE102004030747A1 (en) | 2004-06-25 | 2004-06-25 | Air-oxygen breathing mixtures, for emergency respirators, are produced using supply of pressurized oxygen to suck atmospheric air through venturi nozzle eductor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410030747 DE102004030747A1 (en) | 2004-06-25 | 2004-06-25 | Air-oxygen breathing mixtures, for emergency respirators, are produced using supply of pressurized oxygen to suck atmospheric air through venturi nozzle eductor |
Publications (1)
Publication Number | Publication Date |
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DE102004030747A1 true DE102004030747A1 (en) | 2006-01-19 |
Family
ID=35507954
Family Applications (1)
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DE200410030747 Withdrawn DE102004030747A1 (en) | 2004-06-25 | 2004-06-25 | Air-oxygen breathing mixtures, for emergency respirators, are produced using supply of pressurized oxygen to suck atmospheric air through venturi nozzle eductor |
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Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1930043A2 (en) | 2006-12-05 | 2008-06-11 | Weinmann Geräte für Medizin GmbH & Co. KG | Method and device for mixing oxygen into a breathing gas mixture |
WO2013050907A1 (en) * | 2011-10-05 | 2013-04-11 | Koninklijke Philips Electronics N.V. | Respiratory therapy systems and methods using a gas mixing circuit |
WO2013151690A1 (en) * | 2012-04-05 | 2013-10-10 | Avox Systems, Inc. | Oxygen/air supply for fuel cell applications |
US10709866B2 (en) | 2014-05-13 | 2020-07-14 | Fisher & Paykel Healthcare Limited | Usability features for respiratory humidification system |
US10828482B2 (en) | 2013-12-20 | 2020-11-10 | Fisher & Paykel Healthcare Limited | Humidification system connections |
US10974015B2 (en) | 2012-03-15 | 2021-04-13 | Fisher & Paykel Healthcare Limited | Respiratory gas humidification system |
US11129956B2 (en) | 2012-04-27 | 2021-09-28 | Fisher & Paykel Healthcare Limited | Usability features for respiratory humidification system |
US11173272B2 (en) | 2014-05-02 | 2021-11-16 | Fisher & Paykel Healthcare Limited | Gas humidification arrangement |
CN113769214A (en) * | 2021-08-23 | 2021-12-10 | 河南辉瑞生物医电技术有限公司 | Control system of breathing machine |
US11278689B2 (en) | 2014-11-17 | 2022-03-22 | Fisher & Paykel Healthcare Limited | Humidification of respiratory gases |
US11324911B2 (en) | 2014-06-03 | 2022-05-10 | Fisher & Paykel Healthcare Limited | Flow mixers for respiratory therapy systems |
US11351332B2 (en) | 2016-12-07 | 2022-06-07 | Fisher & Paykel Healthcare Limited | Sensing arrangements for medical devices |
US11511069B2 (en) | 2013-09-13 | 2022-11-29 | Fisher & Paykel Healthcare Limited | Humidification system |
US11559653B2 (en) | 2014-02-07 | 2023-01-24 | Fisher & Paykel Healthcare Limited | Respiratory humidification system |
US11801360B2 (en) | 2013-09-13 | 2023-10-31 | Fisher & Paykel Healthcare Limited | Connections for humidification system |
US11918748B2 (en) | 2012-04-05 | 2024-03-05 | Fisher & Paykel Healthcare Limited | Respiratory assistance apparatus |
US11992622B2 (en) | 2020-06-03 | 2024-05-28 | Fisher & Paykel Healthcare Limited | Usability features for respiratory humidification system |
Citations (6)
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DE2643996A1 (en) * | 1975-10-01 | 1977-04-14 | Renault | ELASTIC VENTURI TUBE FOR VARIABLE FLOW RATE |
DE3038063C2 (en) * | 1980-10-08 | 1983-07-28 | Braukmann Kessel GmbH, 6966 Seckach | Oil burner |
DE3740677C2 (en) * | 1987-12-01 | 1990-05-23 | Total Walther Feuerschutz Gmbh, 5000 Koeln, De | |
WO1997038742A1 (en) * | 1996-04-15 | 1997-10-23 | Stryker Corporation | Combined suction and gas delivery apparatus |
DE10205845C1 (en) * | 2002-02-13 | 2002-10-31 | Draeger Medical Ag | Mixing device used in portable breathing apparatus comprises ejectors, central suction channel, valves for regulating feed via propellant gas connections, volume stream sensors, and evaluating and control unit |
DE19907362C2 (en) * | 1999-02-20 | 2003-04-17 | Draeger Medical Ag | Method for mixing oxygen with air in a ventilator with a venturi nozzle |
-
2004
- 2004-06-25 DE DE200410030747 patent/DE102004030747A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2643996A1 (en) * | 1975-10-01 | 1977-04-14 | Renault | ELASTIC VENTURI TUBE FOR VARIABLE FLOW RATE |
DE3038063C2 (en) * | 1980-10-08 | 1983-07-28 | Braukmann Kessel GmbH, 6966 Seckach | Oil burner |
DE3740677C2 (en) * | 1987-12-01 | 1990-05-23 | Total Walther Feuerschutz Gmbh, 5000 Koeln, De | |
WO1997038742A1 (en) * | 1996-04-15 | 1997-10-23 | Stryker Corporation | Combined suction and gas delivery apparatus |
DE19907362C2 (en) * | 1999-02-20 | 2003-04-17 | Draeger Medical Ag | Method for mixing oxygen with air in a ventilator with a venturi nozzle |
DE10205845C1 (en) * | 2002-02-13 | 2002-10-31 | Draeger Medical Ag | Mixing device used in portable breathing apparatus comprises ejectors, central suction channel, valves for regulating feed via propellant gas connections, volume stream sensors, and evaluating and control unit |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1930043A2 (en) | 2006-12-05 | 2008-06-11 | Weinmann Geräte für Medizin GmbH & Co. KG | Method and device for mixing oxygen into a breathing gas mixture |
WO2013050907A1 (en) * | 2011-10-05 | 2013-04-11 | Koninklijke Philips Electronics N.V. | Respiratory therapy systems and methods using a gas mixing circuit |
US20140216455A1 (en) * | 2011-10-05 | 2014-08-07 | Koninklijke Philips N.V. | Respiratory therapy systems and methods using a gas mixing circuit |
CN103889493B (en) * | 2011-10-05 | 2016-08-24 | 皇家飞利浦有限公司 | Use respiratory treatment systems and the method for gas mixed circuit |
US9662468B2 (en) * | 2011-10-05 | 2017-05-30 | Koninklijke Philips N.V. | Respiratory therapy systems and methods using a gas mixing circuit |
US10974015B2 (en) | 2012-03-15 | 2021-04-13 | Fisher & Paykel Healthcare Limited | Respiratory gas humidification system |
WO2013151690A1 (en) * | 2012-04-05 | 2013-10-10 | Avox Systems, Inc. | Oxygen/air supply for fuel cell applications |
US11918748B2 (en) | 2012-04-05 | 2024-03-05 | Fisher & Paykel Healthcare Limited | Respiratory assistance apparatus |
US11878093B2 (en) | 2012-04-27 | 2024-01-23 | Fisher & Paykel Healthcare Limited | Usability features for respiratory humidification system |
US11129956B2 (en) | 2012-04-27 | 2021-09-28 | Fisher & Paykel Healthcare Limited | Usability features for respiratory humidification system |
US11511069B2 (en) | 2013-09-13 | 2022-11-29 | Fisher & Paykel Healthcare Limited | Humidification system |
US11801360B2 (en) | 2013-09-13 | 2023-10-31 | Fisher & Paykel Healthcare Limited | Connections for humidification system |
US11826538B2 (en) | 2013-12-20 | 2023-11-28 | Fisher & Paykel Healthcare Limited | Humidification system connections |
US10828482B2 (en) | 2013-12-20 | 2020-11-10 | Fisher & Paykel Healthcare Limited | Humidification system connections |
US11559653B2 (en) | 2014-02-07 | 2023-01-24 | Fisher & Paykel Healthcare Limited | Respiratory humidification system |
US11173272B2 (en) | 2014-05-02 | 2021-11-16 | Fisher & Paykel Healthcare Limited | Gas humidification arrangement |
US10709866B2 (en) | 2014-05-13 | 2020-07-14 | Fisher & Paykel Healthcare Limited | Usability features for respiratory humidification system |
US11324911B2 (en) | 2014-06-03 | 2022-05-10 | Fisher & Paykel Healthcare Limited | Flow mixers for respiratory therapy systems |
US11712536B2 (en) | 2014-06-03 | 2023-08-01 | Fisher & Paykel Healthcare Limited | Flow mixers for respiratory therapy systems |
US11278689B2 (en) | 2014-11-17 | 2022-03-22 | Fisher & Paykel Healthcare Limited | Humidification of respiratory gases |
US11351332B2 (en) | 2016-12-07 | 2022-06-07 | Fisher & Paykel Healthcare Limited | Sensing arrangements for medical devices |
US11992622B2 (en) | 2020-06-03 | 2024-05-28 | Fisher & Paykel Healthcare Limited | Usability features for respiratory humidification system |
CN113769214A (en) * | 2021-08-23 | 2021-12-10 | 河南辉瑞生物医电技术有限公司 | Control system of breathing machine |
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