EP1436046B1 - Respiratory apparatus for compressed-air breathing equipment - Google Patents

Respiratory apparatus for compressed-air breathing equipment Download PDF

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Publication number
EP1436046B1
EP1436046B1 EP02772059A EP02772059A EP1436046B1 EP 1436046 B1 EP1436046 B1 EP 1436046B1 EP 02772059 A EP02772059 A EP 02772059A EP 02772059 A EP02772059 A EP 02772059A EP 1436046 B1 EP1436046 B1 EP 1436046B1
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EP
European Patent Office
Prior art keywords
oxygen system
air
valve seat
valve
driving motor
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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
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EP02772059A
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German (de)
French (fr)
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EP1436046A1 (en
Inventor
Jan Martin
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MSA Auer GmbH
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MSA Auer GmbH
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Publication of EP1436046A1 publication Critical patent/EP1436046A1/en
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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00Component parts for respiratory or breathing apparatus
    • A62B9/02Valves
    • A62B9/022Breathing demand regulators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63CLAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02Divers' equipment
    • B63C11/18Air supply
    • B63C11/22Air supply carried by diver
    • B63C11/2227Second-stage regulators

Definitions

  • the invention relates to a regulator for SCBA, with a respiratory controlled valve device for regulating the air supply to a respiratory mask.
  • Regulators have long been known. They are between the pressure reducing valve of a compressed air reservoir and the respirator switched and serve accordingly the respiratory cycle of providing a particular Breathing air quantity with one for the human organism suitable pressure. In the known pulmonary machines the actuation of the valve device takes place for release and for controlling the air supply from the pressure reducer to the respirator with the help of an inhaling through the User moved due to the negative pressure generated Control membrane.
  • the invention is therefore based on the object, a To design lung machines of the kind mentioned in the opening paragraph that with a small size whose trouble-free Function and one to the specific breathing conditions of the User-adjustable control of air supply ensured is.
  • the basic idea of the invention is that the actuation of the valve device or the release the air supply to the user when inhaling and interrupting the air supply when exhaling by one of a Pressure sensor controlled drive motor takes place.
  • the regulator according to the invention comprises a housing, in a valve seat with centrally arranged air inlet channel, a the air inlet channel assigned Closing part and a drive motor housed for the closing part are.
  • the pressure sensor for detecting the in the respective Respiratory phase of prevailing pressure due to the drive motor via a control unit according to a predetermined Control characteristic is controlled.
  • valve seat with the central air inlet opening manually adjustable, so that in case of malfunction of the Movement of the closing part by the manual movement of the Valve seat yet an air supply to the user possible is.
  • the illustrated in Figure 1 embodiment of a regulator comprises a housing 1 with a measuring chamber 2, the at the air outlet side via an air outlet channel 3 at the respirator (not shown) can be connected.
  • a valve seat 4 is arranged, the by manual rotation according to the arrow A in Axial direction is adjustable.
  • a sealing ring 5 is provided for sealing is between Valve seat 4 and housing 1, a sealing ring 5 is provided for sealing.
  • the air supply according to the arrow B from the medium pressure line (not shown) takes place in the housing 1 via an axially extending in the valve seat 4 air inlet channel 6, which by a in the axial direction (arrow C) by means of a drive motor 8 movable closing part 7 is closable.
  • the closing part 7 is for closing the front-side opening part 4a of the valve seat 4 formed as a closing cone 7a.
  • the drive motor 8 is housed in a drive housing 9, the under the action of a safety spring 10 to the air inlet side towards (arrow D) against a stop surface 11th is pressed.
  • the drive housing and an between drive motor 8 and closing part 7 provided drive member (Drive spindle) 12 are the measuring space 2 through Sealed ring seals 13 and 14.
  • the one connection space between the air inlet channel 6 and the air outlet channel 3 is a pressure sensor 15 connected.
  • the pressure sensor 15 is connected to the Drive motor 8 is connected via a controller 16. Furthermore is to the drive motor 8 and the pressure sensor 15 a Power supply 17 connected.
  • the drawing shows the regulator in the upper one Half of the picture in the closed valve position and in the lower half of the picture in the open valve position.
  • the pressure sensor 15 controls the drive motor 8 due to the pressure increase in the way that the closing part 7 is moved towards the valve seat 4 and the valve seat 4 seals, so that of the medium pressure line no respiratory air can flow.
  • safety spring 10 is used for a voltage applied to the lung machine Inadmissibly high pressure, for example with a defective one Pressure reducer, the closing part 7 together with drive housing. 9 push back and release the opening of the valve seat 4, so that the air can flow out.
  • valve seat 4 is turned out of the housing 1 by hand can be. This allows the user even with a broken Drive motor 8, which is no longer able to withdraw the closing part 7 and the air inlet channel 6 release, breathing air to be supplied.
  • FIG. 2 differs differ from those described above only in terms of the formation of the valve device.
  • the Closing part is as the inner cylinder 18 surrounding, with Help the drive motor 8 rotatable about its longitudinal axis Closing pot 20 executed.
  • In the wall of the closing pot 20 is also a (second) through hole 21, the same height as the first through hole 19 is located.
  • two seals 23 and 24 are provided, which are arranged are that the through holes lie between them.
  • Fig. 2 shows the fully closed Valve position when exhaling, in which the Closing pot 20 due to the increased pressure from the drive motor 8 in a through holes 19 sealing Location, which illustrates in Fig. 2 by the sealing surface is, was filmed.
  • the effect of the safety spring 10 comes about, that at one of the medium pressure line outgoing To high pressure of the closing pot 20 in the axial direction opposite the elastic force of the safety spring 10 moves becomes. This will improve the sealing effect of the front seal 24 lifted so that the air can flow out.
  • valve seat. 4 with inner cylinder 18 manually turn so that one of first through holes 19 with the second through hole 21 is brought into the closing pot 20, so that breathing air can flow to the respirator mask.
  • the valve device to release or interrupting the air supply as longitudinally elastic extendable valve member 25 in the elastic part integrated valve openings 26 formed.
  • the elastic valve element 25 with Help of the powered by the drive motor 8 drive member 12 stretched so that the valve openings 26 released be and breathing air from the air inlet duct 6 via the Valve openings 26, the measuring chamber 2 and the air outlet channel 3 to flow to the user. Because of the pressure sensor 15 measured pressure conditions can be a corresponding metered amount of air to be routed to the mask by the drive motor 8, the elastic valve element 25 to stretches a certain amount and the valve openings 26 accordingly opens.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • External Artificial Organs (AREA)

Abstract

A oxygen system includes a casing ( 1 ) that houses a valve seat ( 4 ) with an air inlet duct ( 6 ) arranged in axial direction, a shutting part ( 7 ) associated with the air inlet duct at the valve outlet, and a driving motor ( 8 ). A pressure sensor ( 15 ) for measuring the pressure in the respective phase of breathing is located in a measuring chamber ( 2 ) connecting the air inlet duct and the air outlet duct ( 3 ) that is formed in the casing and can be connected to a respirator mask. The pressure conditions prevailing during inhalation and exhalation control the drive motor that is connected by a controller to the shutting part of the valve unit, and regulate the air supply to the respirator mask. In addition to the air control that exactly matches respiration, the device is small and compact, requires few mechanical components, and is resistant to impact stress.

Description

Die Erfindung betrifft einen Lungenautomat für Pressluftatemgeräte, mit einer durch die Atmung gesteuerten Ventileinrichtung zur Regelung der Luftzufuhr zu einer Atemschutzmaske.The invention relates to a regulator for SCBA, with a respiratory controlled valve device for regulating the air supply to a respiratory mask.

Lungenautomaten sind seit langem bekannt. Sie sind zwischen das Druckreduzierventil eines Pressluftreservoirs und die Atemschutzmaske geschaltet und dienen entsprechend dem Atmungszyklus der Bereitstellung einer bestimmten Atemluftmenge mit einem für den menschlichen Organismus geeigneten Druck. Bei den bekannten Lungenautomaten erfolgt die Betätigung der Ventileinrichtung zur Freigabe und zur Regelung der Luftzufuhr vom Druckminderer zur Atemschutzmaske mit Hilfe einer beim Einatmen durch den Benutzer aufgrund des erzeugten Unterdrucks bewegten Steuermembran.Regulators have long been known. They are between the pressure reducing valve of a compressed air reservoir and the respirator switched and serve accordingly the respiratory cycle of providing a particular Breathing air quantity with one for the human organism suitable pressure. In the known pulmonary machines the actuation of the valve device takes place for release and for controlling the air supply from the pressure reducer to the respirator with the help of an inhaling through the User moved due to the negative pressure generated Control membrane.

Aufgrund der rein mechanischen Membransteuerung ist eine Vielzahl zusammenwirkender mechanischer Bauteile erforderlich. Der Platzbedarf ist entsprechend groß und die Regelung der dem Benutzer zuzuführenden Luftmenge ist entsprechend grob und unstetig und nicht auf die speziellen Bedürfnisse des Benuzers einstellbar. Zudem reagiert ein mit einer mechanischen Membransteuerung ausgebildeter Lungenautomat sehr empfindlich auf äußere mechanische Einflüsse, die zu Unregelmäßigkeiten oder gar Unterbrechungen der Luftzufuhr zum Benutzer führen können.Due to the purely mechanical membrane control is a Variety of interacting mechanical components required. The space requirement is correspondingly large and the Control of the amount of air to be supplied to the user correspondingly coarse and unsteady and not on the specific ones Needs of the user adjustable. In addition, reacts a trained with a mechanical diaphragm control Regulator very sensitive to external mechanical Influences leading to irregularities or even interruptions the air supply to the user.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Lungenautomaten der eingangs erwähnten Art so auszubilden, dass bei geringer Baugröße dessen störungsfreie Funktion und eine an die spezifischen Atembedingungen des Benutzers anpassbare Regelung der Luftzufuhr gewährleistet ist.The invention is therefore based on the object, a To design lung machines of the kind mentioned in the opening paragraph that with a small size whose trouble-free Function and one to the specific breathing conditions of the User-adjustable control of air supply ensured is.

Erfindungsgemäß wird die Aufgabe mit einem gemäß den Merkmalen des Patentanspruches 1 ausgebildeten Lungenautomat gelöst.According to the invention, the object with a according to the Features of claim 1 trained regulator solved.

Weitere Merkmale und zweckmäßige Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further features and expedient embodiments of the invention emerge from the dependent claims.

Der grundlegende Erfindungsgedanke besteht darin, dass die Betätigung der Ventileinrichtung bzw. die Freigabe der Luftzufuhr zum Benutzer beim Einatmen und das Unterbrechen der Luftzufuhr beim Ausatmen durch einen von einem Drucksensor gesteuerten Antriebsmotor erfolgt. Das heißt, dass ein der Auslaßöffnung im Ventilsitz zugeordnetes Schließteil auf der Grundlage des im Lungenautomaten beim Ein- und Ausatmen vom Druckmesser über eine Steuerung an den Antriebsmotor signalisierten Druckes diese Auslaßöffnung mehr oder weniger weit freigibt oder verschließt.The basic idea of the invention is that the actuation of the valve device or the release the air supply to the user when inhaling and interrupting the air supply when exhaling by one of a Pressure sensor controlled drive motor takes place. The means that one of the outlet opening in the valve seat associated Locking part based on the in the regulator when inhaling and exhaling from the pressure gauge via a Control to the drive motor signaled pressure this orifice releases more or less widely or closes.

Der erfindungsgemäße Lungenautomat umfaßt ein Gehäuse, in dem ein Ventilsitz mit zentrisch angeordneten Lufteintrittskanal, ein dem Lufteintrittskanal zugeordnetes Schließteil und ein Antriebsmotor für das Schließteil untergebracht sind. In einem den Lufteintrittskanal und den im Gehäuse ausgeformten, an die Atemschutzmaske angeschlossenen Luftaustrittskanal verbindenden Meßraum befindet sich der Drucksensor zum Erfassen des in der jeweiligen Atemphase herrschenden Druckes, aufgrund dessen der Antriebsmotor über eine Steuereinheit nach einer vorgegebenen Steuerungs-charakteristik gesteuert wird. The regulator according to the invention comprises a housing, in a valve seat with centrally arranged air inlet channel, a the air inlet channel assigned Closing part and a drive motor housed for the closing part are. In one the air inlet channel and the formed in the housing, connected to the respirator Air outlet channel connecting measuring space is located the pressure sensor for detecting the in the respective Respiratory phase of prevailing pressure due to the drive motor via a control unit according to a predetermined Control characteristic is controlled.

Die Regelung der Luftzufuhr ist sehr gleichmäßig und an die tatsächlichen Bedürfnisse des Benutzers bzw. die Atembedingungen angepaßt. Durch die Ventilbetätigung mit einem über den gemessenen Druck gesteuerten Antriebsmotor werden nur wenige mechanische Bauteile benötigt. Somit wird die Lebensdauer erhöht und die Störanfälligkeit verringert. Gegenüber den bekannten Geräten ist die Baugröße deutlich geringer. Insbesondere sind Funktionsstörungen aufgrund äußerer mechanischer Einwirkung auf den Lungenautomaten im Wesentlichen ausgeschlossen. Die von den mechanisch gesteuerten Lugenautomaten bekannten Geräusche treten bei dem erfindungsgemäßen Gerät nicht auf.The regulation of the air supply is very even and on the actual needs of the user or the breathing conditions customized. By the valve actuation with a controlled via the measured pressure drive motor Only a few mechanical components are needed. Consequently the service life is increased and the susceptibility is reduced. Compared to the known devices is the size much lower. In particular, malfunctions due to external mechanical influence on the regulator essentially excluded. The mechanical ones Controlled Lugenautomaten known noises Do not occur in the device according to the invention.

Nach einem weiteren wichtigen Merkmal der Erfindung ist der über ein Antriebsorgan mit dem Schließteil der Ventileinrichtung verbundene Antriebsmotor elastisch gelagert. Sofern auf das Schließteil ein unzulässig hoher Luftdruck wirkt, zum Beispiel bei einem Defekt des dem Lungenautomaten bekanntermaßen vorgeschaltetem Druckminderventils, kann aufgrund der elastischen Lagerung des Antriebsmotors und damit auch der elastischen Halterung des Schließteils ein Druckausgleich erfolgen.After another important feature of the invention is the via a drive member with the closing part of the valve device connected drive motor mounted elastically. If on the closing part an impermissibly high Air pressure acts, for example, in a defect of the Lung machines known upstream upstream pressure reducing valve, can due to the elastic storage of the Drive motor and thus the elastic holder of the closing part carried out a pressure equalization.

In weiterer vorteilhafter Ausbildung der Erfindung ist der Ventilsitz mit der zentralen Lufteintrittsöffnung manuell verstellbar, so dass bei einer Funktionsstörung der Bewegung des Schließteils durch die manuelle Bewegung des Ventilsitzes dennoch eine Luftzufuhr zum Benutzer möglich ist.In a further advantageous embodiment of the invention the valve seat with the central air inlet opening manually adjustable, so that in case of malfunction of the Movement of the closing part by the manual movement of the Valve seat yet an air supply to the user possible is.

Ausführungsbeisspiele der Erfindung, aus denen sich weitere vorteilhafte Ausgestaltungen ergeben, werden anhand der Zeichnung, die in der jeweiligen Figur sowohl die Einatmungs- bzw. Offenstellung des Ventils als auch die Ausatmungs- bzw. Schließstellung des Ventils wiedergibt, näher erläutert. Es zeigen:

Fig.1
eine erste Ausführungsvariante eines erfindungsgemäßen Lungenautomaten mit einem translatorisch bewegten Schließteil zur Freigabe und Regelung der Luftzufuhr zum Benutzer;
Fig.2
eine zweite Ausführungsvariante des Lungenautomaten mit einem die Luftzuführung durch eine Drehbewegung regelnden Verschlußorgan für die Luftzufuhr; und
Fig.3
eine dritte Ausführungsvariante des Lungenautomaten mit einem elastisch ausgebildeten Verschlußelement, das infolge seiner Längenänderung den Luftweg über die Atemschutzmaske zum Benutzer freigibt.
Ausführungsbeisspiele the invention, which results in further advantageous embodiments are explained in more detail with reference to the drawing, which reproduces in the respective figure, both the inhalation and open position of the valve and the exhalation or closed position of the valve. Show it:
Fig.1
a first embodiment of a regulator according to the invention with a translationally moving closing part for releasing and regulating the air supply to the user;
Fig.2
a second embodiment of the lung valve with a the air supply by a rotary motion regulating closure member for the air supply; and
Figure 3
a third embodiment of the regulator with an elastically formed closure element that releases the airway via the respirator to the user as a result of its change in length.

1. Ausführungsvariante1st embodiment

Die in Fig.1 dargestellte Ausführungsform eines Lungenautomaten umfaßt ein Gehäuse 1 mit einem Meßraum 2, der an der Luftaustrittsseite über einem Luftaustrittskanal 3 an die Atemschutzmaske (nicht dargestellt) anschließbar ist. An der über eine Mitteldruckleitung mit einem Druckminderer (nicht dargestellt) verbundenen Lufteintrittsseite ist in dem Gehäuse 1 ein Ventilsitz 4 angeordnet, der durch manuelle Drehbewegung entsprechend dem Pfeil A in Achsrichtung verstellbar ist. Zum Abdichten ist zwischen Ventilsitz 4 und Gehäuse 1 ein Dichtungsring 5 vorgesehen. Die Luftzufuhr gemäß dem Pfeil B von der Mitteldruckleitung (nicht dargestellt) in das Gehäuse 1 erfolgt über einen axial im Ventilsitz 4 verlaufenden Lufteintrittskanal 6, der durch ein in axialer Richtung (Pfeil C) mit Hilfe eines Antriebsmotors 8 bewegliches Schließteil 7 verschließbar ist. Das Schließteil 7 ist zum Verschließen des stirnseitigen Öffnungteils 4a des Ventilsitzes 4 als Schließkegel 7a ausgebildet. Der Antriebsmotor 8 ist in einem Antriebsgehäuse 9 untergebracht, das unter der Wirkung eine Sicherheitsfeder 10 zur Lufteintrittsseite hin (Pfeil D) gegen eine Anschlagfläche 11 gedrückt wird. Das Antriebsgehäuse und ein zwischen Antriebsmotor 8 und Schließteil 7 vorgesehenes Antriebsorgan (Antriebsspindel) 12 sind zum Meßraum 2 hin durch Ringdichtungen 13 und 14 abgedichtet. An den Meßraum 2, der einen Verbindungsraum zwischen dem Lufteintrittskanal 6 und dem Luftaustrittskanal 3 darstellt, ist ein Drucksensor 15 angeschlossen. Der Drucksensor 15 ist mit dem Antriebsmotor 8 über eine Steuerung 16 verbunden. Außerdem ist an den Antriebsmotor 8 und den Drucksensor 15 eine Stromversorgung 17 angeschlossen.The illustrated in Figure 1 embodiment of a regulator comprises a housing 1 with a measuring chamber 2, the at the air outlet side via an air outlet channel 3 at the respirator (not shown) can be connected. At the over a medium pressure line with a pressure reducer (not shown) connected air inlet side is in the housing 1, a valve seat 4 is arranged, the by manual rotation according to the arrow A in Axial direction is adjustable. For sealing is between Valve seat 4 and housing 1, a sealing ring 5 is provided. The air supply according to the arrow B from the medium pressure line (not shown) takes place in the housing 1 via an axially extending in the valve seat 4 air inlet channel 6, which by a in the axial direction (arrow C) by means of a drive motor 8 movable closing part 7 is closable. The closing part 7 is for closing the front-side opening part 4a of the valve seat 4 formed as a closing cone 7a. The drive motor 8 is housed in a drive housing 9, the under the action of a safety spring 10 to the air inlet side towards (arrow D) against a stop surface 11th is pressed. The drive housing and an between drive motor 8 and closing part 7 provided drive member (Drive spindle) 12 are the measuring space 2 through Sealed ring seals 13 and 14. To the measuring chamber 2, the one connection space between the air inlet channel 6 and the air outlet channel 3 is a pressure sensor 15 connected. The pressure sensor 15 is connected to the Drive motor 8 is connected via a controller 16. Furthermore is to the drive motor 8 and the pressure sensor 15 a Power supply 17 connected.

Die Funktion des zuvor anhand der Figur 1 beschriebenen Lungenautomaten ist folgende:The function of the previously described with reference to FIG 1 Regulator is as follows:

Die Zeichnung zeigt den Lungenautomaten in der oberen Bildhälfte in der geschlossenen Ventilstellung und in der unteren Bildhälfte in der offenen Ventilstellung. Wenn in der Einatmungsphase bei zunächst geschlossenem Lufteintrittskanal 6 (das Schließteil 7 liegt abdichtend an dem Ventilsitz 4) vom Drucksensor 15 ein bestimmter Druckabfall im Meßraum 2 festgestellt wird, erhält der Antriebsmotor 8 über die Steuerung 16 ein der Änderungsgröße des Druckes entsprechendes Signal und zieht das Schließteil zurück (untere Bildhälfte). Dadurch kann die über eine Mitteldruckleitung (nicht dargestellt) zugeführte Luft über dem Lufteintrittskanal 6, den Meßraum (Verbindungsraum) 2 und den Luftaustrittskanal 3 zur Atemschutzmaske (nicht dargestellt) strömen. Da die Steuerung das Antriebsmotors 8 auf der Basis der jeweiligen Druckverhältnisse erfolgt, ist eine an die jeweils herrschenden Bedingungen exakt angepaßte Luftzufuhr zum Benutzer möglich.The drawing shows the regulator in the upper one Half of the picture in the closed valve position and in the lower half of the picture in the open valve position. When in the inhalation phase at first closed air inlet channel 6 (the closing part 7 is sealingly on the Valve seat 4) from the pressure sensor 15 a certain pressure drop is detected in the measuring chamber 2, receives the drive motor 8 via the controller 16 one of the change size of the Pressure corresponding signal and pulls the closing part back (lower half). This allows the over a Medium pressure line (not shown) supplied air above the air inlet channel 6, the measuring space (connecting space) 2 and the air outlet duct 3 to the respirator (not shown) flow. Because the controller is the drive motor 8 based on the respective pressure conditions is one of the prevailing conditions exactly adapted air supply to the user possible.

In der Ausatmungsphase steuert der Drucksensor 15 den Antriebsmotor 8 aufgrund des Druckanstiegs in der Weise, dass das Schließteil 7 zum Ventilsitz 4 hin bewegt wird und den Ventilsitz 4 abdichtet, so dass von der Mitteldruckleitung keine Atemluft nachströmen kann.In the exhalation phase, the pressure sensor 15 controls the drive motor 8 due to the pressure increase in the way that the closing part 7 is moved towards the valve seat 4 and the valve seat 4 seals, so that of the medium pressure line no respiratory air can flow.

Die auf das Antriebsgehäuse 9 wirkende Sicherheitsfeder 10 dient dazu, bei einem am Lungenautomaten anliegenden unzulässig hohen Druck, zum Beispiel bei einem defekten Druckminderer, das Schließteil 7 samt Antriebsgehäuse 9 zurückzudrücken und die Öffnung des Ventilsitzes 4 freizugeben, so dass die Luft abströmen kann.The force acting on the drive housing 9 safety spring 10 is used for a voltage applied to the lung machine Inadmissibly high pressure, for example with a defective one Pressure reducer, the closing part 7 together with drive housing. 9 push back and release the opening of the valve seat 4, so that the air can flow out.

Eine weitere Schicherheitsmaßnahme besteht darin, dass der Ventilsitz 4 von Hand aus dem Gehäuse 1 herausgedreht werden kann. Dadurch kann dem Benutzer auch bei einem defekten Antriebsmotor 8, der nicht mehr in der Lage ist, das Schließteil 7 zurückzuziehen und den Lufteintrittskanal 6 freizugeben, Atemluft zugeführt werden.Another safety measure is that the valve seat 4 is turned out of the housing 1 by hand can be. This allows the user even with a broken Drive motor 8, which is no longer able to withdraw the closing part 7 and the air inlet channel 6 release, breathing air to be supplied.

2. Ausführungsvariante2nd embodiment

Die in Fig. 2 dargestellte Ausführungsform unterscheidet sich von der oben beschriebenen lediglich hinsichtlich der Ausbildung der Ventileinrichtung. Diese besteht hier aus einem Ventilsitz 4 mit einem Innenzylinder 18, dessen Zylinderwand erste Durchgangsbohrungen 19 aufweist. Das Schließteil ist als den Innenzylinder 18 umgebender, mit Hilfe des Antriebsmotors 8 um seine Längsachse drehbarer Schließtopf 20 ausgeführt. In der Wand des Schließtopfes 20 befindet sich ebenfalls eine (zweite) Durchgangsbohrung 21, die auf gleicher Höhe wie die erste Durchgangsbohrung 19 liegt. Am Umfang des Innenzylinders 18 sind zwei Dichtungen 23 und 24 vorgesehen, die so angeordnet sind, dass die Durchgangsbohrungen zwischen diesen liegen.The embodiment shown in Fig. 2 differs differ from those described above only in terms of the formation of the valve device. This exists here from a valve seat 4 with an inner cylinder 18, whose Cylinder wall first through holes 19 has. The Closing part is as the inner cylinder 18 surrounding, with Help the drive motor 8 rotatable about its longitudinal axis Closing pot 20 executed. In the wall of the closing pot 20 is also a (second) through hole 21, the same height as the first through hole 19 is located. At the periphery of the inner cylinder 18 are two seals 23 and 24 are provided, which are arranged are that the through holes lie between them.

Die Steuerung der Luftzufuhr zur Atemschutzmaske über den Lungenautomaten erfolgt in dieser Ausführungvariante in der Form, dass aufgrund der beim Einatmen herrschenden und vom Druckmesser 15 zur Steuerung 16 übertragenen Druckverhältnisse im Meßraum 2 der Antriebsmotor 8 den Schließtopf 20 in eine Drehbewegung versetzt und dessen Durchgangsbohrung 21 über die Durchgangsbohrung 19 des Innenzylinders 18 (Verlängerung des Ventilsitzes) stellt. Abhängig davon, wie weit die zweite Durchgangsbohrung 21 die erste Durchgangsbohrung 19 entsprechend dem festgestellten Druck überdeckt, wird dem Benutzer eine dementsprechende Luftmenge zugeführt. In Fig. 2 ist die geöffnete Ventilstellung in der oberen Bildhälfte dargestellt, so dass die Einatmungsluft entsprechend den Pfeilen B und E von der Mitteldruckleitung über den Lufteintrittskanal 6, die Durchgangsbohrungen 19 und 21, den Meßraum 2 und den Luftaustrittskanal 3 zur Atemschutzmaske strömt.The control of the air supply to the respirator via the Regulator in this version in the form that due to the prevailing inhalation and transmitted from the pressure gauge 15 to the controller 16 Pressure conditions in the measuring chamber 2 of the drive motor 8 the Closing pot 20 is set in a rotational movement and its Through hole 21 through the through hole 19 of the Inner cylinder 18 (extension of the valve seat) provides. Depending on how far the second through hole 21 the first through hole 19 corresponding to the detected Pressure is masked, the user is a corresponding Air supplied. In Fig. 2, the open Valve position shown in the upper half of the picture, so that the inhalation air according to the arrows B and E from the medium pressure line via the air inlet duct 6, the through holes 19 and 21, the measuring chamber 2 and the air outlet duct 3 flows to the respirator.

Die unter Bildhälfte von Fig. 2 zeigt die vollständig geschlossene Ventilstellung beim Ausatmen, bei dem der Schließtopf 20 aufgrund des erhöhten Druckes vom Antriebsmotor 8 in eine die Durchgangsbohrungen 19 abdichtende Lage, die in Fig. 2 durch die Dichtfläche verdeutlicht wird, gedreht wurde.The half of Fig. 2 shows the fully closed Valve position when exhaling, in which the Closing pot 20 due to the increased pressure from the drive motor 8 in a through holes 19 sealing Location, which illustrates in Fig. 2 by the sealing surface is, was filmed.

Die Wirkung der Sicherheitsfeder 10 kommt dadurch zustande, dass bei einem von der Mitteldruckleitung ausgehenden zu hohen Druck der Schließtopf 20 in Achsrichtung entgegen der elastischen Kraft der Sicherheitsfeder 10 bewegt wird. Dadurch wird die Dichtwirkung der vorderen Dichtung 24 aufgehoben, so dass die Luft abströmen kann. The effect of the safety spring 10 comes about, that at one of the medium pressure line outgoing To high pressure of the closing pot 20 in the axial direction opposite the elastic force of the safety spring 10 moves becomes. This will improve the sealing effect of the front seal 24 lifted so that the air can flow out.

Sofern, beispielsweise aufgrund eines defekten Antriebsmotors 8, der Schließtopf 20 nicht gedreht und damit keine Atemluft zum Benutzer geleitet werden kann, ist es bei dieser zweiten Ausführungsform möglich, den Ventilsitz 4 mit Innenzylinder 18 manuell so zu drehen, dass eine der ersten Durchgangsbohrungen 19 mit der zweiten Durchgangsbohrung 21 im Schließtopf 20 zur Deckung gebracht wird, so dass Atemluft zur Atemschutzmaske strömen kann.If, for example, due to a defective drive motor 8, the closing pot 20 is not rotated and thus no Breathing air can be directed to the user, it is at This second embodiment possible, the valve seat. 4 with inner cylinder 18 manually turn so that one of first through holes 19 with the second through hole 21 is brought into the closing pot 20, so that breathing air can flow to the respirator mask.

3. Ausführungsvariante3rd embodiment

Bei der in Fig. 3 wiedergegebenen Ausführungsform des Lungenautomaten ist die Ventileinrichtung zum Freigeben oder Unterbrechen der Luftzufuhr als in Längsrichtung elastisch verlängerbares Ventilelement 25 mit in dessen elastischen Teil integrierten Ventilöffnungen 26 ausgebildet. Bei entsprechenden Druckverhältnissen in der Einatmungsphase wird das elastische Ventilelement 25 mit Hilfe des vom Antriebsmototr 8 betriebenen Antriebsorgans 12 gestreckt, so dass die Ventilöffnungen 26 freigegeben werden und Atemluft vom Lufteintrittskanal 6 über die Ventilöffnungen 26, den Meßraum 2 und den Luftaustrittskanal 3 zum Benutzer strömen. Aufgrund der mit dem Drucksensor 15 gemessenen Druckbedingungen kann eine entsprechend dosierte Luftmenge zur Maske geleitet werden, indem der Antriebsmotor 8 das elastische Ventilelement 25 um einen bestimmten Betrag dehnt und die Ventilöffnungen 26 dementsprechend öffnet.In the reproduced in Fig. 3 embodiment of the Regulator is the valve device to release or interrupting the air supply as longitudinally elastic extendable valve member 25 in the elastic part integrated valve openings 26 formed. At appropriate pressure conditions in the inhalation phase is the elastic valve element 25 with Help of the powered by the drive motor 8 drive member 12 stretched so that the valve openings 26 released be and breathing air from the air inlet duct 6 via the Valve openings 26, the measuring chamber 2 and the air outlet channel 3 to flow to the user. Because of the pressure sensor 15 measured pressure conditions can be a corresponding metered amount of air to be routed to the mask by the drive motor 8, the elastic valve element 25 to stretches a certain amount and the valve openings 26 accordingly opens.

Auch bei dieser Ausführungsvariante kann aufgrund der elastischen Motorlagerung Luft abströmen, wenn ein unzulässig hoher Druck am Lufteintrittskanal anliegt. Gleichermaßen kann bei einer Antriebsstörung der Ventilsitz 4 manuell zurückgestellt werden, um auch in einem derartigen Störungsfall die Luftzufuhr zur Atemschutzmaske zu gewährleisten. Also in this embodiment, due to the elastic Engine storage bleed air when inadmissible high pressure at the air inlet duct is present. equally can in a drive failure of the valve seat. 4 be reset manually, even in such a way If there is a fault, the air supply to the respiratory mask too guarantee.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Gehäusecasing
22
Meßraummeasuring space
33
LuftaustrittskanalAir outlet channel
44
Ventilsitzvalve seat
4a4a
stirnseitiges Öffnungsteilfrontal opening part
55
Dichtungsringsealing ring
66
LufteintrittskanalAir inlet channel
77
Schließteilclosing part
7a7a
Schließkegelclosing cone
88th
Antriebsmotordrive motor
99
Antriebsgehäusedrive housing
1010
Sicherheitsfedersecurity spring
1111
Anschlagflächestop surface
1212
Antriebsorgandrive member
1313
Ringdichtungring seal
1414
Ringdichtungring seal
1515
Drucksensorpressure sensor
1616
Steuerungcontrol
1717
Stromversorgungpower supply
1818
Innenzylinderinner cylinder
1919
Erste DurchgangsbohrungFirst through hole
2020
Schließtopfclosing pot
2121
Zweite DurchgangsbohrungSecond through-hole
2222
Dichtflächesealing surface
2323
Dichtungpoetry
2424
Dichtung (vorn)Seal (front)
2525
Elastisches VentilelementElastic valve element
2626
Ventilöffnungvalve opening

Claims (12)

  1. An oxygen system for compressed air breathing apparatuses with a respiration-controlled valve unit housed in a casing for controlling the air supply to a respirator mask, characterized in that the valve unit includes a valve seat (4) with an air inlet duct (6) and a shutting part (7, 20, 25) operated by a driving motor (8), and in that a pressure sensor (15) that is connected to the driving motor (8) via a controller (16) for controlling the air supply based on measured pressure is located in a measuring chamber (2) that connects the air inlet duct (6) and an air outlet duct (3) formed in the casing (1) and connected to the respirator mask.
  2. The oxygen system according to claim 1, characterized in that the driving motor (8) and a driving member (12) linked with the shutting part (7, 20, 25) is elastically held on a stopper surface (11) in the casing (1) against the air pressure acting on the shutting part (7, 20, 25) so that the shutting part (7, 20, 25) can be adjusted automatically for releasing the air inlet duct (6) when an unacceptably high pressure has built up.
  3. The oxygen system according to claim 2, characterized in that the elastic support of the driving motor (8) is a safety spring (10) that presses the drive casing of the driving motor (8) against the stopper surface (11).
  4. The oxygen system according to claim 1, characterized in that the valve seat (4) is manually adjustable and sealed in the casing (1) so that it can be connected to the air outlet duct (3) in the event of a failure that renders the shutting part (7, 20, 25) inoperable.
  5. The oxygen system according to claims 1 through 4, characterized in that the air inlet duct (6) of the valve seat (4) can be shut at the front outlet side opening (4a) by a shutting part (7) that is movable in longitudinal direction (arrow C).
  6. The oxygen system according to claim 5, characterized in that the valve seat (4) can be adjusted in axial direction by manual rotation (arrow A).
  7. The oxygen system according to claims 1 through 4, characterized in that the valve seat (4) is designed as an inside cylinder (18) on its outlet side with through holes (19) in the cylinder wall and that a closing pot (20) that functions as the shutting part and has a lateral through hole (21) laps over the inside cylinder (18), the closing pot (20) being rotatable around its axis by the driving motor (8) depending on the measured pressure conditions to allow air supply to the respirator mask when the through holes of the inside cylinder (18) and the closing pot (20) overlap partially or completely.
  8. The oxygen system according to claim 7, characterized in that the closing pot (20), the driving member (12), and the driving motor (8) can be moved in longitudinal direction by the action of unacceptably high pressure, thereby disengaging a packing (24) provided between the inside cylinder (18) and the closing pot (20).
  9. The oxygen system according to claim 7, characterized in that the inside cylinder (18) can be rotated by manually rotating the valve seat (4) to ensure a drive-independent air supply to the respirator mask.
  10. The oxygen system according to any one of claims 1 through 4, characterized in that the shutting part is designed as a pot-shaped elastic valve element (25) connected to the valve seat (4) that is stretched by the driving member (12) driven by the driving motor (8) based on the pressure measured in the measuring chamber (2) and thus opens valve openings (26) in the side walls to a greater or lesser extent, or closes them.
  11. The oxygen system according to claim 10, characterized in that the elastic valve element (25) can be elastically stretched by manually adjusting the valve seat (4) in longitudinal direction to ensure a drive-independent air supply to the respirator mask.
  12. The oxygen system according to claim 10, characterized in that the elastic valve element (25) can be elastically stretched to open the valve opening (26) when an unacceptably high pressure acts on the inlet.
EP02772059A 2001-10-19 2002-09-10 Respiratory apparatus for compressed-air breathing equipment Expired - Lifetime EP1436046B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10152454 2001-10-19
DE10152454A DE10152454B4 (en) 2001-10-19 2001-10-19 Regulator for compressed air respirators
PCT/DE2002/003421 WO2003037437A1 (en) 2001-10-19 2002-09-10 Respiratory apparatus for compressed-air breathing equipment

Publications (2)

Publication Number Publication Date
EP1436046A1 EP1436046A1 (en) 2004-07-14
EP1436046B1 true EP1436046B1 (en) 2005-06-08

Family

ID=7703552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02772059A Expired - Lifetime EP1436046B1 (en) 2001-10-19 2002-09-10 Respiratory apparatus for compressed-air breathing equipment

Country Status (6)

Country Link
US (1) US20050121035A1 (en)
EP (1) EP1436046B1 (en)
AT (1) ATE297237T1 (en)
AU (1) AU2002336905B2 (en)
DE (2) DE10152454B4 (en)
WO (1) WO2003037437A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8960194B2 (en) * 2006-02-23 2015-02-24 Spacelabs Healthcare Llc Ventilator for rapid response to respiratory disease conditions
WO2007101124A2 (en) * 2006-02-23 2007-09-07 Spacelabs Healthcare Ventilator for rapid response to respiratory disease conditions
US9993604B2 (en) 2012-04-27 2018-06-12 Covidien Lp Methods and systems for an optimized proportional assist ventilation
US9669172B2 (en) * 2012-07-05 2017-06-06 Resmed Limited Discreet respiratory therapy system
US10362967B2 (en) 2012-07-09 2019-07-30 Covidien Lp Systems and methods for missed breath detection and indication
US9027552B2 (en) 2012-07-31 2015-05-12 Covidien Lp Ventilator-initiated prompt or setting regarding detection of asynchrony during ventilation
US9950129B2 (en) 2014-10-27 2018-04-24 Covidien Lp Ventilation triggering using change-point detection
GB201509800D0 (en) * 2015-06-05 2015-07-22 Smiths Medical Int Ltd Respiratory therapy apparatus
US11324954B2 (en) 2019-06-28 2022-05-10 Covidien Lp Achieving smooth breathing by modified bilateral phrenic nerve pacing
CN111060441B (en) * 2020-02-14 2020-09-11 山东鑫珂海洋生物技术股份有限公司 Device convenient to detect gauze mask quality

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Publication number Priority date Publication date Assignee Title
GB8830131D0 (en) * 1988-12-23 1989-02-22 Instr & Movements Limited Demand valves
DE4040793A1 (en) * 1990-12-15 1992-06-17 Ulrich Gumpert Electronically regulated iron lung - has pressure sensor supplying signals to electronic regulator controlling auxiliary valve of servo valve
US5331995A (en) * 1992-07-17 1994-07-26 Bear Medical Systems, Inc. Flow control system for medical ventilator
US5928189A (en) * 1997-04-22 1999-07-27 Phillips; Robert E. Activity responsive therapeutic delivery system
SE9801624D0 (en) * 1998-05-11 1998-05-11 Siemens Elema Ab Valve
DE19934058B4 (en) * 1999-07-19 2004-07-08 Auergesellschaft Gmbh Valve for compressed gas breathing apparatus
US6467505B1 (en) * 2000-10-11 2002-10-22 Flowmatrix Inc. Variable pressure regulated flow controllers

Also Published As

Publication number Publication date
ATE297237T1 (en) 2005-06-15
US20050121035A1 (en) 2005-06-09
AU2002336905B2 (en) 2006-12-21
EP1436046A1 (en) 2004-07-14
DE10152454A1 (en) 2003-05-08
DE50203374D1 (en) 2005-07-14
DE10152454B4 (en) 2005-07-28
WO2003037437A1 (en) 2003-05-08

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