WO2021069314A1 - Valve device, in particular for controlling a gas flow - Google Patents

Valve device, in particular for controlling a gas flow Download PDF

Info

Publication number
WO2021069314A1
WO2021069314A1 PCT/EP2020/077619 EP2020077619W WO2021069314A1 WO 2021069314 A1 WO2021069314 A1 WO 2021069314A1 EP 2020077619 W EP2020077619 W EP 2020077619W WO 2021069314 A1 WO2021069314 A1 WO 2021069314A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
valve device
fuel cell
cap
projection
Prior art date
Application number
PCT/EP2020/077619
Other languages
German (de)
French (fr)
Inventor
Friedrich Howey
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2021069314A1 publication Critical patent/WO2021069314A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0473—Multiple-way safety valves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • Valve device in particular for controlling a gas flow
  • the invention relates to a valve device such as is used in particular for controlling a gas flow, for example for controlling a gas flow for the supply of gas to a fuel cell.
  • the fuel cell system has a fuel cell to which oxygen and hydrogen are supplied. This then reacts in the fuel cell to form water or water vapor.
  • electrical power is provided by electrochemical conversion, which is used as drive energy for a fuel-cell-operated vehicle.
  • the corresponding gas must be fed to the fuel cell separately on the anode side and the cathode side.
  • a shut-off valve is provided in order to cut off the fuel cell from the supply of further oxygen when it is not in operation. Otherwise, oxygen would diffuse from the cathode side through the membrane of the fuel cell to the anode side, which would lead to a so-called air-to-air start and is harmful to the fuel cell.
  • shut-off valves are known from the prior art.
  • DE 102016224273 A1 shows a valve for controlling a gas flow that is controlled by means of an electromagnetic actuator, a valve element being moved to open and close a flow cross-section and this interacting with a sealing seat.
  • passive check valves are known which open and close a movable Ventilele element depending on the pressure difference between the input and output.
  • a fuel cell is operated in different operating states with different volume flow rates. This means that the check valve must be kept open in a stable manner even with a low volume flow.
  • valve device according to the invention with the characterizing features of claim 1 has the advantage that opening of the valve device and thus reliable operation of the fuel cell is guaranteed even with a low volume flow.
  • the valve device has a valve housing, in particular for controlling a gas flow in a fuel cell system, in which valve housing a valve element that is movable along a longitudinal axis is arranged.
  • the valve element also has a plate-shaped area, on which plate-shaped area a first projection is formed, which first requirement cooperates with a first valve seat formed on the valve housing to open and close a connection between an input of the valve device and an output of the valve device.
  • a second projection is formed on the plate-shaped area of the valve element, which second projection interacts with a second valve seat formed on the valve housing to open and close a connection between an ambient pressure area and the outlet.
  • valve device can be opened even with a low volume flow, in that the opening force for the valve device is provided by the pressure difference between a pressure in the valve housing and a pressure in the ambient pressure range.
  • the valve element has a pin-shaped area, which pin-shaped area is received and guided in an opening of the valve housing formed in a recess. A compact design of the valve device is achieved in this way.
  • an interior of the valve device can be connected to the input and / or the output and which interior can be connected to the cap space by means of feed-through openings, the feed-through openings being formed in the valve housing.
  • a spring is arranged in the valve device, which spring acts on the valve element with a force in the direction of the second valve seat. In this way, the stroke movement of the valve element can be controlled in a simple manner.
  • the ambient pressure area is formed in a cap space, which cap space is delimited by a cap element and the valve housing.
  • the cap element is firmly connected to the valve housing by means of fastening elements.
  • the molded part of the valve housing is surrounded by the cap element, the opening formed in the molded part opening into the cap space.
  • a pressure compensation element is arranged in the cap element, the pressure compensation element only being permeable to gaseous media. In this way, it can be ensured in a simple manner that, for example, liquids or solids such as dust cannot get into the cap space and thus impurities in the functioning the valve device and thus not impair the functioning of the fuel cell.
  • the cap element has a line, which line is connected to an air supply unit of the fuel cell system, preferably between a system filter and a flow machine of the air supply unit.
  • the purity of the cap space can be ensured, especially when a system filter is arranged between the line and the turbomachine. This also ensures an optimal and efficient functioning of the valve device and thus of the fuel cell.
  • the inlet is arranged axially to the longitudinal axis of the valve device and the outlet is arranged radially to the longitudinal axis of the valve device. In this way, a flexible arrangement of the valve device is achieved in a cathode region of a fuel cell arrangement.
  • valve device described in particular for controlling a gas flow, is preferably suitable in a fuel cell arrangement.
  • valve device described in particular for controlling a gas flow, is preferably suitable in a vehicle with a fuel cell drive.
  • Ventilvor device according to the invention are shown in particular for controlling a gas flow in a fuel cell system.
  • Components with the same function have the same reference number.
  • FIG. 1 shows a first embodiment of a Ventilvorrich device according to the invention, in particular for controlling a gas flow in a fuel cell system in longitudinal section,
  • Fig. 2 shows a second embodiment of a Ven valve device according to the invention, in particular for controlling a gas flow in a fuel cell system in longitudinal section.
  • Fig.l shows a first embodiment of a Ventilvor device 1 according to the invention, in particular for controlling a gas flow in a cathode area of a fuel cell system in longitudinal section.
  • the valve device 1 has a multi-part valve housing 100 which has an opening 107 which forms an inlet 4. Furthermore, the valve device 1 has a further opening 108 which forms an outlet 5.
  • the input 4 can for example be connected to an air supply unit of the fuel cell system and the output 5 to a fuel cell of the fuel cell system.
  • the valve device 1 is used as an inlet valve upstream of the fuel cell.
  • the output 5 is connected to an exhaust air system of the fuel cell system and the input 4 is connected to the fuel cell of the fuel cell system.
  • the valve device 1 is used as an outlet valve after the fuel cell.
  • an interior 106 is formed in the valve housing 100, in which a valve element 2 which is movable along a longitudinal axis 12 of the valve device 1 is arranged.
  • This valve element 2 has a plate-shaped loading area 22 and a pin-shaped area 23, the pin-shaped area 23 being taken and guided in an opening 105 of the valve housing 100 formed in a molding 104.
  • the projection 104 of the valve housing 100 is of a cap element 7 to give.
  • the valve housing 100 and the cap element 7 are firmly connected to one another by means of fastening elements 70.
  • the cap element 7 and the valve housing 100 also delimit a cap space 9 in which the requirement 104 of the valve housing 100 is arranged and into which the opening 105 opens.
  • the cap space 9 is connected to the interior 106 of the valve housing 100 via feed-through openings 103 which are formed in the valve housing 100.
  • a pressure compensation element 8 is arranged in the cap element 7, so that an ambient pressure region 10 is formed in the cap space 9.
  • the pressure compensation element 8 is only permeable to gaseous media here, so that liquids and solids, such as dust, cannot get into the cap chamber 9.
  • the plate-shaped area 22 of the valve element 2 has a first projection 21 which interacts with a first valve seat 102 formed on the valve housing 100 for opening and closing a connection between the inlet 4 and the outlet 5 of the valve device 1.
  • the inlet 4 is here arranged axially to the longitudinal axis 12 of the valve device 1, whereas the outlet 5 is arranged radially to the longitudinal axis 12 of the valve device 1.
  • the input 4 and the output 5 are arranged perpendicular to one another.
  • the plate-shaped region 22 of the valve element 2 has a second formation 20 which interacts with a second valve seat 101 formed on the valve housing 100 for opening and closing a connection between the cap chamber 9 and the outlet 5.
  • a spring 6 is also arranged, which is supported on the one hand on the valve housing 100 and on the other hand on the valve element 2 and the valve element 2 with a force in the direction of the input 4 beats.
  • the valve element 2 In a closed position of the valve device 1, the valve element 2 therefore rests on the first valve seat 102 and thus closes the connection between the inlet 4 and the outlet 5 of the valve device 1.
  • the functioning of the valve device 1 is as follows: During operation of the fuel cell, air is conveyed in the direction of the fuel cell by means of the flow machine of the air supply unit. If the valve device 1 is used here as an inlet valve in front of the fuel cell, the air flows from the flow machine into the inlet 4 of the valve device 1.
  • valve device 1 can be designed so that the combination of kinetic energy and flow forces during the lift-off from the first valve seat 102 are sufficient to keep the valve element 2 seated until it is seated on the second valve seat 101 to move.
  • valve element 2 with the second projection 20 is seated on the second valve seat 101, the connection between the inlet 4 and the outlet 5 is released so that air can flow from the inlet 4 via the outlet 5 to the fuel cell.
  • the connection between the outlet 5 and the cap space 9 is closed.
  • This pressure difference holds the valve element 2 in the position on the second valve seat 101, so that the first valve seat 102 is opened and the second valve seat 101 is closed. This ensures that the fuel cell is continuously supplied with air while the fuel cell system is in operation.
  • the pressure in the interior 106 of the valve device 1 drops, so that the valve element 2 lifts off the second valve seat 101 and moves into place due to the falling pressure difference between the interior 106 and the cap space 9 and the additional force of the spring 6 direction of the first valve seat 102 moves and finally sits on this.
  • the connection between the input 4 and the output 5 of the valve device 1 is closed, so that no more air can flow in the direction of the fuel cell.
  • valve device 1 If the valve device 1 is used as an outlet valve after the fuel cell, the same functional principle takes place, according to which the valve device 1 releases the first valve seat 102 and blocks the second valve seat 101 during operation of the fuel cell system. If the operation of the fuel cell system is stopped, the second valve seat 101 is opened and the first valve seat 102 is closed again. This provides an optimal seal between the fuel cell and the environment.
  • FIG. 2 shows a second embodiment of a Ventilvor device 1 according to the invention, in particular for controlling a gas flow in a fuel cell system in longitudinal section.
  • the second exemplary embodiment corresponds to the first exemplary embodiment in terms of its structure and mode of operation.
  • the pressure compensation element 8 in the cap element 7 is omitted.
  • the cap element 9 has a line 71 which opens into the cap space 9 and connects the sen with the air supply unit of the fuel cell system.
  • the line 71 is connected, for example, between a system filter and a flow machine, so that no impurities can get into the cathode path of the fuel cell.

Abstract

The invention relates to a valve device (1), in particular for controlling a gas flow in a fuel cell system, said valve device comprising a valve housing (100), in which valve housing (100) a valve element (2) which can move along a longitudinal axis (12) is arranged. The valve element (2) has a plate-shaped region (22), on which plate-shaped region (22) a first moulded part (21) is formed, said first moulded part (21) interacting with a first valve seat (102) formed on the valve housing (100) in order to open and close a connection between an inlet (4) of the valve device (1) and an outlet (5) of the valve device (1). Furthermore, a second moulded part (20) is formed on the plate-shaped region (22) of the valve element (2), said second moulded part (20) interacting with a second valve seat (101) formed on the valve housing (100) in order to open and close a connection between an ambient pressure region (10) and the outlet (5).

Description

Beschreibung description
Ventilvorrichtung, insbesondere zur Steuerung einer Gasströmung Valve device, in particular for controlling a gas flow
Die Erfindung betrifft eine Ventilvorrichtung, wie sie insbesondere zur Steuerung einer Gasströmung Verwendung findet, beispielsweise zur Steuerung einer Gas strömung für die Zuführung von Gas zu einer Brennstoffzelle. The invention relates to a valve device such as is used in particular for controlling a gas flow, for example for controlling a gas flow for the supply of gas to a fuel cell.
Stand der Technik State of the art
Im Fahrzeugbereich spielen Fahrzeuge mit Brennstoffzellenantrieb eine immer größere Rolle. Dabei weist das Brennstoffzellensystem eine Brennstoffzelle auf, welcher Sauerstoff und Wasserstoff zugeführt wird. Dies reagiert dann in der Brennstoffzelle zu Wasser bzw. Wasserdampf. So wird durch elektrochemische Wandlung eine elektrische Leistung bereitgestellt, welche als Antriebsenergie ei nes brennstoffzellenbetriebenen Fahrzeugs verwendet wird. Der Brennstoffzelle muss jeweils getrennt das entsprechende Gas auf der Anodenseite und der Ka thodenseite zugeführt werden. In der Gaszuführung für Sauerstoff ist ein Ab sperrventil vorgesehen, um die Brennstoffzelle von der Zuführung von weiterem Sauerstoff abzuschneiden, wenn diese nicht in Betrieb ist. Anderenfalls würde Sauerstoff von der Kathodenseite durch die Membran der Brennstoffzelle auf die Anodenseite diffundieren, was zu einem sogenannten Air-to-Air- Start führen würde und schädlich für die Brennstoffzelle ist. In the automotive sector, vehicles with fuel cell drives are playing an increasingly important role. The fuel cell system has a fuel cell to which oxygen and hydrogen are supplied. This then reacts in the fuel cell to form water or water vapor. For example, electrical power is provided by electrochemical conversion, which is used as drive energy for a fuel-cell-operated vehicle. The corresponding gas must be fed to the fuel cell separately on the anode side and the cathode side. In the gas supply for oxygen, a shut-off valve is provided in order to cut off the fuel cell from the supply of further oxygen when it is not in operation. Otherwise, oxygen would diffuse from the cathode side through the membrane of the fuel cell to the anode side, which would lead to a so-called air-to-air start and is harmful to the fuel cell.
Solche Absperrventile sind aus dem Stand der Technik bekannt. Beispielsweise zeigt die DE 102016224273 Al ein Ventil zur Steuerung eines Gasstroms, das mittels eines elektromagnetischen Aktors gesteuert wird, wobei dabei ein Ventil element zum Öffnen und Schließen eines Durchströmungsquerschnitts bewegt wird und dieses mit einem Dichtsitz zusammenwirkt. Weiterhin sind auch passive Rückschlagventile bekannt, welche abhängig von der Druckdifferenz zwischen Eingang und Ausgang ein bewegliches Ventilele ment öffnen und schließen. Eine Brennstoffzelle wird jedoch in verschiedenen Betriebszuständen mit unterschiedlichem Volumenstrom betrieben. Das heißt, das Rückschlagventil muss auch bei geringem Volumenstrom in stabiler Weise offengehalten werden. Such shut-off valves are known from the prior art. For example, DE 102016224273 A1 shows a valve for controlling a gas flow that is controlled by means of an electromagnetic actuator, a valve element being moved to open and close a flow cross-section and this interacting with a sealing seat. Furthermore, passive check valves are known which open and close a movable Ventilele element depending on the pressure difference between the input and output. However, a fuel cell is operated in different operating states with different volume flow rates. This means that the check valve must be kept open in a stable manner even with a low volume flow.
Vorteile der Erfindung Advantages of the invention
Die erfindungsgemäße Ventilvorrichtung mit den kennzeichnenden Merkmalen des Anspruchs 1 weist demgegenüber den Vorteil auf, dass auch bei geringem Volumenstrom eine Öffnung der Ventilvorrichtung und damit ein verlässlicher Be trieb der Brennstoffzelle gewährleistet ist. The valve device according to the invention with the characterizing features of claim 1 has the advantage that opening of the valve device and thus reliable operation of the fuel cell is guaranteed even with a low volume flow.
Dazu weist die Ventilvorrichtung insbesondere zur Steuerung einer Gasströmung in einem Brennstoffzellensystem ein Ventilgehäuse auf, in welchem Ventilge häuse ein entlang einer Längsachse bewegliches Ventilelement angeordnet ist. Das Ventilelement weist weiterhin einen tellerförmigen Bereich auf, an welchem tellerförmigen Bereich eine erste Anformung ausgebildet ist, welche erste Anfor mung zum Öffnen und Schließen einer Verbindung zwischen einem Eingang der Ventilvorrichtung und einem Ausgang der Ventilvorrichtung mit einem an dem Ventilgehäuse ausgebildeten ersten Ventilsitz zusammenwirkt. Weiterhin ist an dem tellerförmigen Bereich des Ventilelements eine zweite Anformung ausgebil det, welche zweite Anformung zum Öffnen und Schließen einer Verbindung zwi schen einem Umgebungsdruckbereich und dem Ausgang mit einem an dem Ventilgehäuse ausgebildeten zweiten Ventilsitz zusammenwirkt. For this purpose, the valve device has a valve housing, in particular for controlling a gas flow in a fuel cell system, in which valve housing a valve element that is movable along a longitudinal axis is arranged. The valve element also has a plate-shaped area, on which plate-shaped area a first projection is formed, which first requirement cooperates with a first valve seat formed on the valve housing to open and close a connection between an input of the valve device and an output of the valve device. Furthermore, a second projection is formed on the plate-shaped area of the valve element, which second projection interacts with a second valve seat formed on the valve housing to open and close a connection between an ambient pressure area and the outlet.
So kann auch bei geringem Volumenstrom eine Öffnung der Ventilvorrichtung si chergestellt werden, indem die Öffnungskraft für die Ventilvorrichtung durch die Druckdifferenz zwischen einem Druck in dem Ventilgehäuse und einem Druck des Umgebungsdruckbereichs erbracht wird. In erster vorteilhafter Weiterbildung ist es vorgesehen, dass das Ventilelement einen stiftförmigen Bereich aufweist, welcher stiftförmige Bereich in einer Anfor mung ausgebildeten Öffnung des Ventilgehäuses aufgenommen und geführt ist. So wird eine kompakte Bauweise der Ventilvorrichtung erzielt. In this way, the valve device can be opened even with a low volume flow, in that the opening force for the valve device is provided by the pressure difference between a pressure in the valve housing and a pressure in the ambient pressure range. In a first advantageous further development, it is provided that the valve element has a pin-shaped area, which pin-shaped area is received and guided in an opening of the valve housing formed in a recess. A compact design of the valve device is achieved in this way.
In weiterer Ausgestaltung der Erfindung ist es vorteilhaft vorgesehen, dass ein Innenraum der Ventilvorrichtung jeweils mit dem Eingang und/oder dem Ausgang verbindbar ist und welcher Innenraum mittels Durchführungsöffnungen mit dem Kappenraum verbindbar ist, wobei die Durchführungsöffnungen in dem Ventilge häuse ausgebildet sind. In a further embodiment of the invention, it is advantageously provided that an interior of the valve device can be connected to the input and / or the output and which interior can be connected to the cap space by means of feed-through openings, the feed-through openings being formed in the valve housing.
In vorteilhafter Weiterbildung ist in der Ventilvorrichtung eine Feder angeordnet, welche Feder das Ventilelement mit einer Kraft in Richtung des zweiten Ventilsit zes beaufschlagt. So kann in einfacher Weise die Hubbewegung des Ventilele ments gesteuert werden. In an advantageous development, a spring is arranged in the valve device, which spring acts on the valve element with a force in the direction of the second valve seat. In this way, the stroke movement of the valve element can be controlled in a simple manner.
In weiterer Ausgestaltung der Erfindung ist es vorteilhaft vorgesehen, dass der Umgebungsdruckbereich in einem Kappenraum ausgebildet ist, welcher Kappen raum von einem Kappenelement und dem Ventilgehäuse begrenzt ist. Vorteilhaf terweise ist das Kappenelement mittels Befestigungselementen mit dem Ventil gehäuse fest verbunden. In a further embodiment of the invention, it is advantageously provided that the ambient pressure area is formed in a cap space, which cap space is delimited by a cap element and the valve housing. Advantageously, the cap element is firmly connected to the valve housing by means of fastening elements.
In vorteilhafter Weiterbildung ist die Anformung des Ventilgehäuses von dem Kappenelement umgeben, wobei die in der Anformung ausgebildeten Öffnung in den Kappenraum mündet. In an advantageous development, the molded part of the valve housing is surrounded by the cap element, the opening formed in the molded part opening into the cap space.
In vorteilhafter Weiterbildung ist es vorgesehen, dass in dem Kappenelement ein Druckausgleichselement angeordnet ist, wobei das Druckausgleichselement nur für gasförmige Medien durchlässig ist. So kann auf einfache Weise gewährleistet werden, dass beispielsweise Flüssigkeiten oder Festkörper wie Staub nicht in den Kappenraum gelangen können und so Verunreinigungen die Funktionsweise der Ventilvorrichtung und damit die Funktionsweise der Brennstoffzelle nicht be einträchtigen. In an advantageous further development it is provided that a pressure compensation element is arranged in the cap element, the pressure compensation element only being permeable to gaseous media. In this way, it can be ensured in a simple manner that, for example, liquids or solids such as dust cannot get into the cap space and thus impurities in the functioning the valve device and thus not impair the functioning of the fuel cell.
In weiterer Ausgestaltung der Erfindung ist es vorteilhaft vorgesehen, dass das Kappenelement eine Leitung aufweist, welche Leitung an einer Luftversorgungs einheit des Brennstoffzellensystems, vorzugsweise zwischen einem Systemfilter und einer Strömungsmaschine der Luftversorgungseinheit, angebunden ist. So kann die Reinheit des Kappenraums sichergestellt werden, insbesondere dann wenn zwischen der Leitung und der Strömungsmaschine ein Systemfilter ange ordnet ist. Ebenso wird dadurch eine optimale und effiziente Funktionsweise der Ventilvorrichtung und damit der Brennstoffzelle sichergestellt. In a further embodiment of the invention, it is advantageously provided that the cap element has a line, which line is connected to an air supply unit of the fuel cell system, preferably between a system filter and a flow machine of the air supply unit. In this way, the purity of the cap space can be ensured, especially when a system filter is arranged between the line and the turbomachine. This also ensures an optimal and efficient functioning of the valve device and thus of the fuel cell.
In vorteilhafter Weiterbildung ist es vorgesehen, dass der Eingang axial zu der Längsachse der Ventilvorrichtung und der Ausgang radial zu der Längsachse der Ventilvorrichtung angeordnet ist. So wird eine flexible Anordnung der Ventilvor richtung in einem Kathodenbereich einer Brennstoffzellenanordnung erzielt. In an advantageous development, it is provided that the inlet is arranged axially to the longitudinal axis of the valve device and the outlet is arranged radially to the longitudinal axis of the valve device. In this way, a flexible arrangement of the valve device is achieved in a cathode region of a fuel cell arrangement.
Die beschriebene Ventilvorrichtung insbesondere zur Steuerung einer Gasströ mung eignet sich vorzugsweise in einer Brennstoffzellenanordnung. The valve device described, in particular for controlling a gas flow, is preferably suitable in a fuel cell arrangement.
Die beschriebene Ventilvorrichtung insbesondere zur Steuerung einer Gasströ mung eignet sich vorzugsweise in einem Fahrzeug mit Brennstoffzellenantrieb. The valve device described, in particular for controlling a gas flow, is preferably suitable in a vehicle with a fuel cell drive.
Zeichnungen drawings
In der Zeichnung sind Ausführungsbeispiele einer erfindungsgemäßen Ventilvor richtung insbesondere zur Steuerung einer Gasströmung in einem Brennstoffzel lensystem dargestellt. Bauteile mit gleicher Funktion wurden mit derselben Be zugsziffer bezeichnet. In the drawing, embodiments of a Ventilvor device according to the invention are shown in particular for controlling a gas flow in a fuel cell system. Components with the same function have the same reference number.
Es zeigt in Fig. 1 ein erstes Ausführungsbeispiel einer erfindungsgemäßen Ventilvorrich tung insbesondere zur Steuerung einer Gasströmung in einem Brennstoffzellen system im Längsschnitt, It shows in Fig. 1 shows a first embodiment of a Ventilvorrich device according to the invention, in particular for controlling a gas flow in a fuel cell system in longitudinal section,
Fig. 2 ein zweites Ausführungsbeispiel einer erfindungsgemäßen Ven tilvorrichtung insbesondere zur Steuerung einer Gasströmung in einem Brenn stoffzellensystem im Längsschnitt. Fig. 2 shows a second embodiment of a Ven valve device according to the invention, in particular for controlling a gas flow in a fuel cell system in longitudinal section.
Beschreibung der Ausführungsbeispiele Description of the exemplary embodiments
Fig.l zeigt ein erstes Ausführungsbeispiel einer erfindungsgemäßen Ventilvor richtung 1 insbesondere zur Steuerung einer Gasströmung in einem Kathoden bereich eines Brennstoffzellensystems im Längsschnitt. Die Ventilvorrichtung 1 weist ein mehrteiliges Ventilgehäuse 100 auf, das eine Öffnung 107 aufweist, welche einen Eingang 4 ausbildet. Weiterhin weist die Ventilvorrichtung 1 eine weitere Öffnung 108 auf, welche einen Ausgang 5 ausbildet. Der Eingang 4 kann dabei beispielsweise mit einer Luftversorgungseinheit des Brennstoffzellensys tems und der Ausgang 5 mit einer Brennstoffzelle des Brennstoffzellensystems verbunden sein. Dabei wird die Ventilvorrichtung 1 als Einlassventil vor der Brennstoffzelle verwendet. Fig.l shows a first embodiment of a Ventilvor device 1 according to the invention, in particular for controlling a gas flow in a cathode area of a fuel cell system in longitudinal section. The valve device 1 has a multi-part valve housing 100 which has an opening 107 which forms an inlet 4. Furthermore, the valve device 1 has a further opening 108 which forms an outlet 5. The input 4 can for example be connected to an air supply unit of the fuel cell system and the output 5 to a fuel cell of the fuel cell system. The valve device 1 is used as an inlet valve upstream of the fuel cell.
In einer alternativen Ausführung ist es ebenfalls möglich, dass der Ausgang 5 mit einem Abluftsystem des Brennstoffzellensystems und der Eingang 4 mit der Brennstoffzelle des Brennstoffzellensystems verbunden ist. Hier wird die Ventil vorrichtung 1 als Auslassventil nach der Brennstoffzelle verwendet. In an alternative embodiment, it is also possible that the output 5 is connected to an exhaust air system of the fuel cell system and the input 4 is connected to the fuel cell of the fuel cell system. Here the valve device 1 is used as an outlet valve after the fuel cell.
Darüber hinaus ist in dem Ventilgehäuse 100 ein Innenraum 106 ausgebildet, in dem ein entlang einer Längsachse 12 der Ventilvorrichtung 1 bewegliches Ventil element 2 angeordnet ist. Dieses Ventilelement 2 weist einen tellerförmigen Be reich 22 und einen stiftförmigen Bereich 23 auf, wobei der stiftförmige Bereich 23 in einer Anformung 104 ausgebildeten Öffnung 105 des Ventilgehäuses 100 auf genommen und geführt ist. Die Anformung 104 des Ventilgehäuses 100 ist von einem Kappenelement 7 um geben. Das Ventilgehäuse 100 und das Kappenelement 7 sind mittels Befesti gungselementen 70 fest miteinander verbunden. Das Kappenelement 7 und das Ventilgehäuse 100 begrenzen weiterhin einen Kappenraum 9, in dem die Anfor mung 104 des Ventilgehäuses 100 angeordnet ist und in den die Öffnung 105 mündet. Über Durchführungsöffnungen 103, welche in dem Ventilgehäuse 100 ausgebildet sind, ist der Kappenraum 9 mit dem Innenraum 106 des Ventilgehäu ses 100 verbunden. In addition, an interior 106 is formed in the valve housing 100, in which a valve element 2 which is movable along a longitudinal axis 12 of the valve device 1 is arranged. This valve element 2 has a plate-shaped loading area 22 and a pin-shaped area 23, the pin-shaped area 23 being taken and guided in an opening 105 of the valve housing 100 formed in a molding 104. The projection 104 of the valve housing 100 is of a cap element 7 to give. The valve housing 100 and the cap element 7 are firmly connected to one another by means of fastening elements 70. The cap element 7 and the valve housing 100 also delimit a cap space 9 in which the requirement 104 of the valve housing 100 is arranged and into which the opening 105 opens. The cap space 9 is connected to the interior 106 of the valve housing 100 via feed-through openings 103 which are formed in the valve housing 100.
In dem Kappenelement 7 ist ein Druckausgleichselement 8 angeordnet, so dass in dem Kappenraum 9 ein Umgebungsdruckbereich 10 ausgebildet ist. Das Druckausgleichselement 8 ist hier nur für gasförmige Medien durchlässig, so dass Flüssigkeiten und Festkörper, wie beispielsweise Staub nicht in den Kap penraum 9 gelangen können. A pressure compensation element 8 is arranged in the cap element 7, so that an ambient pressure region 10 is formed in the cap space 9. The pressure compensation element 8 is only permeable to gaseous media here, so that liquids and solids, such as dust, cannot get into the cap chamber 9.
Der tellerförmige Bereich 22 des Ventilelements 2 weist eine erste Anformung 21 auf, welche mit einem an dem Ventilgehäuse 100 ausgebildeten ersten Ventilsitz 102 zum Öffnen und Schließen einer Verbindung zwischen dem Eingang 4 und dem Ausgang 5 der Ventilvorrichtung 1 zusammenwirkt. Der Eingang 4 ist hier axial zu der Längsachse 12 der Ventilvorrichtung 1 angeordnet, wohingegen der Ausgang 5 radial zu der Längsachse 12 der Ventilvorrichtung 1 angeordnet ist. Der Eingang 4 und der Ausgang 5 sind dabei senkrecht zueinander angeordnet. The plate-shaped area 22 of the valve element 2 has a first projection 21 which interacts with a first valve seat 102 formed on the valve housing 100 for opening and closing a connection between the inlet 4 and the outlet 5 of the valve device 1. The inlet 4 is here arranged axially to the longitudinal axis 12 of the valve device 1, whereas the outlet 5 is arranged radially to the longitudinal axis 12 of the valve device 1. The input 4 and the output 5 are arranged perpendicular to one another.
Weiterhin weist der tellerförmige Bereich 22 des Ventilelements 2 eine zweite An formung 20 auf, welche mit einem an dem Ventilgehäuse 100 ausgebildeten zweiten Ventilsitz 101 zum Öffnen und Schließen einer Verbindung zwischen dem Kappenraum 9 und dem Ausgang 5 zusammenwirkt. Furthermore, the plate-shaped region 22 of the valve element 2 has a second formation 20 which interacts with a second valve seat 101 formed on the valve housing 100 for opening and closing a connection between the cap chamber 9 and the outlet 5.
In dem Innenraum 106 ist weiterhin eine Feder 6 angeordnet, welche sich einer seits an dem Ventilgehäuse 100 und andererseits an dem Ventilelement 2 ab stützt und das Ventilelement 2 mit einer Kraft in Richtung des Eingangs 4 beauf schlagt. In einer Schließstellung der Ventilvorrichtung 1 sitzt das Ventilelement 2 daher auf dem ersten Ventilsitz 102 auf und schließt so die Verbindung zwischen dem Eingang 4 und dem Ausgang 5 der Ventilvorrichtung 1. Die Funktionsweise der Ventilvorrichtung 1 ist wie folgt: Im Betrieb der Brenn stoffzelle wird mittels der Strömungsmaschine der Luftversorgungseinheit Luft in Richtung der Brennstoffzelle gefördert. Wird die Ventilvorrichtung 1 hier als Ein lassventil vor der Brennstoffzelle verwendet, so strömt die Luft von der Strö mungsmaschine in den Eingang 4 der Ventilvorrichtung 1. Diese Luft staut sich bei geschlossenem ersten Ventilsitz 102 so lange, bis der Druck des Gases aus reicht, um das Ventilelement 2 gegen die Kraft der Feder 6 zu öffnen. Der Öff nungsimpuls führt zu einer Beschleunigung des Ventilelements 2. Dabei kann die Ventilvorrichtung 1 so ausgelegt werden, dass die Kombination von kinetischer Energie und Strömungskräften während des Abhebens von dem ersten Ventilsitz 102 ausreichen, um das Ventilelement 2 bis zum Aufsitzen auf den zweiten Ven tilsitz 101 zu bewegen. Je geringer der Abstand des Ventilelements 2 zu dem zweiten Ventilsitz 101 wird, desto größer ist die Drosselung am zweiten Ventilsitz 101, so dass bereits vor Erreichen des zweiten Ventilsitzes 101 eine pneumati sche Schließkraftkomponente entsteht. In the interior 106, a spring 6 is also arranged, which is supported on the one hand on the valve housing 100 and on the other hand on the valve element 2 and the valve element 2 with a force in the direction of the input 4 beats. In a closed position of the valve device 1, the valve element 2 therefore rests on the first valve seat 102 and thus closes the connection between the inlet 4 and the outlet 5 of the valve device 1. The functioning of the valve device 1 is as follows: During operation of the fuel cell, air is conveyed in the direction of the fuel cell by means of the flow machine of the air supply unit. If the valve device 1 is used here as an inlet valve in front of the fuel cell, the air flows from the flow machine into the inlet 4 of the valve device 1. With the first valve seat 102 closed, this air accumulates until the pressure of the gas is sufficient to open the valve element 2 against the force of the spring 6. The opening pulse leads to an acceleration of the valve element 2. The valve device 1 can be designed so that the combination of kinetic energy and flow forces during the lift-off from the first valve seat 102 are sufficient to keep the valve element 2 seated until it is seated on the second valve seat 101 to move. The smaller the distance between the valve element 2 and the second valve seat 101, the greater the throttling at the second valve seat 101, so that a pneumatic closing force component arises even before the second valve seat 101 is reached.
Sitzt das Ventilelement 2 mit der zweiten Anformung 20 an dem zweiten Ventil sitz 101 an, so ist die Verbindung zwischen dem Eingang 4 und dem Ausgang 5 freigegeben, so dass Luft vom Eingang 4 über den Ausgang 5 zur Brennstoffzelle strömen kann. Gleichzeitig wird die Verbindung zwischen dem Ausgang 5 und dem Kappenraum 9 geschlossen. Dadurch entsteht eine Druckdifferenz auf das Ventilelement 2, ausgelöst durch die unterschiedlichen Druckverhältnisse im Kappenraum 9 und dem Innenraum 106, wobei der Druck im Innenraum 106 dem Druck im Ausgang 5 entspricht. Diese Druckdifferenz hält das Ventilelement 2 in der Position am zweiten Ventilsitz 101, so dass der erste Ventilsitz 102 geöff net und der zweite Ventilsitz 101 geschlossen ist. So ist sichergestellt, dass wäh rend des Betriebs des Brennstoffzellensystems, die Brennstoffzelle kontinuierlich mit Luft versorgt wird. If the valve element 2 with the second projection 20 is seated on the second valve seat 101, the connection between the inlet 4 and the outlet 5 is released so that air can flow from the inlet 4 via the outlet 5 to the fuel cell. At the same time, the connection between the outlet 5 and the cap space 9 is closed. This creates a pressure difference on the valve element 2, triggered by the different pressure conditions in the cap space 9 and the interior space 106, the pressure in the interior space 106 corresponding to the pressure in the outlet 5. This pressure difference holds the valve element 2 in the position on the second valve seat 101, so that the first valve seat 102 is opened and the second valve seat 101 is closed. This ensures that the fuel cell is continuously supplied with air while the fuel cell system is in operation.
Wird das Brennstoffzellensystem abgestellt, so sinkt der Druck in dem Innenraum 106 der Ventilvorrichtung 1, so dass durch die sinkende Druckdifferenz zwischen dem Innenraum 106 und dem Kappenraum 9 und der zusätzlichen Kraft der Fe der 6 das Ventilelement 2 vom zweiten Ventilsitz 101 abhebt und sich in Richtung des ersten Ventilsitzes 102 bewegt und schließlich auf diesem aufsitzt. So wird die Verbindung zwischen dem Eingang 4 und dem Ausgang 5 der Ventilvorrich tung 1 geschlossen, so dass keine Luft mehr in Richtung der Brennstoffzelle strö men kann. If the fuel cell system is switched off, the pressure in the interior 106 of the valve device 1 drops, so that the valve element 2 lifts off the second valve seat 101 and moves into place due to the falling pressure difference between the interior 106 and the cap space 9 and the additional force of the spring 6 direction of the first valve seat 102 moves and finally sits on this. The connection between the input 4 and the output 5 of the valve device 1 is closed, so that no more air can flow in the direction of the fuel cell.
Wird die Ventilvorrichtung 1 als Auslassventil nach der Brennstoffzelle verwen det, erfolgt dasselbe Funktionsprinzip, wonach die Ventilvorrichtung 1 während des Betriebs des Brennstoffzellensystems den ersten Ventilsitz 102 freigibt und den zweiten Ventilsitz 101 sperrt. Wird der Betrieb des Brennstoffzellensystems eingestellt, so wird der zweite Ventilsitz 101 geöffnet und der erste Ventilsitz 102 wieder geschlossen. Dies stellt eine optimale Dichtheit zwischen der Brennstoff zelle und der Umgebung dar. If the valve device 1 is used as an outlet valve after the fuel cell, the same functional principle takes place, according to which the valve device 1 releases the first valve seat 102 and blocks the second valve seat 101 during operation of the fuel cell system. If the operation of the fuel cell system is stopped, the second valve seat 101 is opened and the first valve seat 102 is closed again. This provides an optimal seal between the fuel cell and the environment.
Fig.2 zeigt ein zweites Ausführungsbeispiel einer erfindungsgemäßen Ventilvor richtung 1 insbesondere zur Steuerung einer Gasströmung in einem Brennstoff zellensystem im Längsschnitt. 2 shows a second embodiment of a Ventilvor device 1 according to the invention, in particular for controlling a gas flow in a fuel cell system in longitudinal section.
Das zweite Ausführungsbeispiel entspricht in Aufbau und Funktionsweise wei testgehend dem ersten Ausführungsbeispiel. In dieser Ausführung entfällt jedoch das Druckausgleichselement 8 in dem Kappenelement 7. Dafür weist das Kap penelement 9 eine Leitung 71 auf, welche in den Kappenraum 9 mündet und die sen mit der Luftversorgungseinheit des Brennstoffzellensystems verbindet. Dabei ist die Leitung 71 beispielsweise zwischen einem Systemfilter und einer Strö mungsmaschine angebunden, so dass keine Verunreinigungen in den Kathoden pfad der Brennstoffzelle gelangen können. The second exemplary embodiment corresponds to the first exemplary embodiment in terms of its structure and mode of operation. In this embodiment, however, the pressure compensation element 8 in the cap element 7 is omitted. For this, the cap element 9 has a line 71 which opens into the cap space 9 and connects the sen with the air supply unit of the fuel cell system. The line 71 is connected, for example, between a system filter and a flow machine, so that no impurities can get into the cathode path of the fuel cell.

Claims

Ansprüche Expectations
1. Ventilvorrichtung (1) insbesondere zur Steuerung einer Gasströmung in einem Brennstoffzellensystem mit einem Ventilgehäuse (100), in welchem Ventil gehäuse (100) ein entlang einer Längsachse (12) bewegliches Ventilelement (2) angeordnet ist, welches Ventilelement (2) einen tellerförmigen Bereich (22) auf weist, an welchem tellerförmigen Bereich (22) eine erste Anformung (21) ausge bildet ist, welche erste Anformung (21) zum Öffnen und Schließen einer Verbin dung zwischen einem Eingang (4) der Ventilvorrichtung (1) und einem Ausgang (5) der Ventilvorrichtung (1) mit einem an dem Ventilgehäuse (100) ausgebilde ten ersten Ventilsitz (102) zusammenwirkt, dadurch gekennzeichnet, dass an dem tellerförmigen Bereich (22) des Ventilelements (2) eine zweite Anformung (20) ausgebildet ist, welche zweite Anformung (20) zum Öffnen und Schließen einer Verbindung zwischen einem Umgebungsdruckbereich (10) und dem Aus gang (5) mit einem an dem Ventilgehäuse (100) ausgebildeten zweiten Ventilsitz (101) zusammenwirkt. 1. Valve device (1) in particular for controlling a gas flow in a fuel cell system with a valve housing (100), in which valve housing (100) a valve element (2) movable along a longitudinal axis (12) is arranged, which valve element (2) is plate-shaped Area (22) has, on which plate-shaped area (22) a first projection (21) is formed, which first projection (21) for opening and closing a connec tion between an input (4) of the valve device (1) and a The outlet (5) of the valve device (1) interacts with a first valve seat (102) formed on the valve housing (100), characterized in that a second projection (20) is formed on the plate-shaped area (22) of the valve element (2) , which second projection (20) for opening and closing a connection between an ambient pressure area (10) and the outlet (5) with a second valve seat (10 1) cooperates.
2. Ventilvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Ventilelement (2) einen stiftförmigen Bereich (23) aufweist, welcher stiftför mige Bereich (23) in einer Anformung (104) ausgebildeten Öffnung (105) des Ventilgehäuses (100) aufgenommen und geführt ist. 2. Valve device (1) according to claim 1, characterized in that the valve element (2) has a pin-shaped area (23), which stiftför-shaped area (23) in a molding (104) formed opening (105) of the valve housing (100) is recorded and managed.
3. Ventilvorrichtung (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein Innenraum (106) der Ventilvorrichtung (1) jeweils mit dem Eingang (4) und/oder dem Ausgang (5) verbindbar ist und welcher Innenraum (106) mittels Durchführungsöffnungen (103) mit dem Umgebungsdruckbereich (10) verbindbar ist, wobei die Durchführungsöffnungen (103) in dem Ventilgehäuse (100) ausge bildet sind. 3. Valve device (1) according to claim 1 or 2, characterized in that an interior (106) of the valve device (1) can be connected to the input (4) and / or the output (5) and which interior (106) means Feed-through openings (103) can be connected to the ambient pressure region (10), the feed-through openings (103) being formed out in the valve housing (100).
4. Ventilvorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in der Ventilvorrichtung (1) eine Feder (6) ange ordnet ist, welche Feder (6) das Ventilelement (2) mit einer Kraft in Richtung des zweiten Ventilsitzes (102) beaufschlagt. 4. Valve device (1) according to one of the preceding claims, characterized in that in the valve device (1) a spring (6) is arranged, which spring (6) the valve element (2) with a force in the direction of the second valve seat ( 102) applied.
5. Ventilvorrichtung (1) nach Anspruch 2, dadurch gekennzeichnet, dass der Umgebungsdruckbereich (10) in einem Kappenraum (9) ausgebildet ist, wel cher Kappenraum (9) von einem Kappenelement (7) und dem Ventilgehäuse (100) begrenzt ist. 5. Valve device (1) according to claim 2, characterized in that the ambient pressure region (10) is formed in a cap space (9), wel cher cap space (9) is limited by a cap element (7) and the valve housing (100).
6. Ventilvorrichtung (1) nach dem vorhergehenden Anspruch, dadurch ge kennzeichnet, dass das Kappenelement (7) mittels Befestigungselementen (70) mit dem Ventilgehäuse (100) fest verbunden ist. 6. Valve device (1) according to the preceding claim, characterized in that the cap element (7) is firmly connected to the valve housing (100) by means of fastening elements (70).
7. Ventilvorrichtung (1) nach dem vorhergehenden Anspruch, dadurch ge kennzeichnet, dass die Anformung (104) des Ventilgehäuses (100) von dem Kappenelement (7) umgeben ist und die in der Anformung (104) ausgebildeten Öffnung (105) in den Kappenraum (9) mündet. 7. Valve device (1) according to the preceding claim, characterized in that the projection (104) of the valve housing (100) is surrounded by the cap element (7) and the opening (105) formed in the projection (104) into the cap space (9) opens.
8. Ventilvorrichtung (1) nach dem Anspruch 5, 6 oder 7, dadurch gekenn zeichnet, dass in dem Kappenelement (7) ein Druckausgleichselement (8) ange ordnet ist, wobei das Druckausgleichselement (8) nur für gasförmige Medien durchlässig ist. 8. Valve device (1) according to claim 5, 6 or 7, characterized in that a pressure compensation element (8) is arranged in the cap element (7), wherein the pressure compensation element (8) is permeable only to gaseous media.
9. Ventilvorrichtung (1) nach Anspruch 5, 6 oder 7, dadurch gekennzeich net, dass das Kappenelement (7) eine Leitung (71) aufweist, welche Leitung (71) an einer Luftversorgungseinheit des Brennstoffzellensystems, vorzugsweise zwi schen einem Systemfilter und einer Strömungsmaschine der Luftversorgungsein heit, angebunden ist. 9. Valve device (1) according to claim 5, 6 or 7, characterized in that the cap element (7) has a line (71), which line (71) on an air supply unit of the fuel cell system, preferably between a system filter and a fluid flow machine the air supply unit, is connected.
10. Ventilvorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Eingang (4) axial zu der Längsachse (12) der Ventilvorrichtung (1) und der Ausgang (5) radial zu der Längsachse (12) der Ven tilvorrichtung (1) angeordnet ist. 10. Valve device (1) according to one of the preceding claims, characterized in that the input (4) axially to the longitudinal axis (12) of the valve device (1) and the output (5) radially to the longitudinal axis (12) of the valve device ( 1) is arranged.
11. Brennstoffzellenanordnung mit einer Ventilvorrichtung (1) nach einem der vorhergehenden Ansprüche. 11. Fuel cell arrangement with a valve device (1) according to one of the preceding claims.
12. Brennstoffzellenbetriebenes Fahrzeug mit einer Ventilvorrichtung (1) ins besondere zur Steuerung einer Gasströmung nach einem der Ansprüche 1 bis 10. 12. Fuel cell powered vehicle with a valve device (1) in particular for controlling a gas flow according to one of claims 1 to 10.
PCT/EP2020/077619 2019-10-10 2020-10-02 Valve device, in particular for controlling a gas flow WO2021069314A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019215500.6 2019-10-10
DE102019215500.6A DE102019215500A1 (en) 2019-10-10 2019-10-10 Valve device, in particular for controlling a gas flow

Publications (1)

Publication Number Publication Date
WO2021069314A1 true WO2021069314A1 (en) 2021-04-15

Family

ID=72852603

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/077619 WO2021069314A1 (en) 2019-10-10 2020-10-02 Valve device, in particular for controlling a gas flow

Country Status (2)

Country Link
DE (1) DE102019215500A1 (en)
WO (1) WO2021069314A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001029433A2 (en) * 1999-10-15 2001-04-26 Imi Norgren-Herion Fluidtronic Gmbh & Co. Kg Device for dynamically monitoring pressure differences
DE10139748A1 (en) * 2000-09-14 2002-05-02 Wabco Gmbh & Co Ohg Trailer brake valve for a trailer with electronic brake control
DE102009025502A1 (en) * 2009-06-19 2010-12-30 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Pneumatic valve device has valve body interacting with two valve seats, where valve body is loaded in opposite direction by pressure and by spring unit
DE102016224273A1 (en) 2016-12-06 2018-06-07 Robert Bosch Gmbh valve device
DE102017210362A1 (en) * 2017-06-21 2018-12-27 Robert Bosch Gmbh Proportional valve for controlling a gaseous medium
DE102018217103A1 (en) * 2018-10-05 2020-04-09 Robert Bosch Gmbh Valve device, in particular for controlling a gas flow
US20200122848A1 (en) * 2018-10-19 2020-04-23 Goodrich Corporation Aspirator air vent valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001029433A2 (en) * 1999-10-15 2001-04-26 Imi Norgren-Herion Fluidtronic Gmbh & Co. Kg Device for dynamically monitoring pressure differences
DE10139748A1 (en) * 2000-09-14 2002-05-02 Wabco Gmbh & Co Ohg Trailer brake valve for a trailer with electronic brake control
DE102009025502A1 (en) * 2009-06-19 2010-12-30 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Pneumatic valve device has valve body interacting with two valve seats, where valve body is loaded in opposite direction by pressure and by spring unit
DE102016224273A1 (en) 2016-12-06 2018-06-07 Robert Bosch Gmbh valve device
DE102017210362A1 (en) * 2017-06-21 2018-12-27 Robert Bosch Gmbh Proportional valve for controlling a gaseous medium
DE102018217103A1 (en) * 2018-10-05 2020-04-09 Robert Bosch Gmbh Valve device, in particular for controlling a gas flow
US20200122848A1 (en) * 2018-10-19 2020-04-23 Goodrich Corporation Aspirator air vent valve

Also Published As

Publication number Publication date
DE102019215500A1 (en) 2021-04-15

Similar Documents

Publication Publication Date Title
DE112007002889B4 (en) Fluid control valve and fuel cell system
EP2087262A1 (en) Closure apparatus for a pressure container, which can be filled with compressed gas, of a cold gas generator
EP0665396A1 (en) Pneumatically controlled valve with independent air pressure supply
EP3850267A1 (en) Tank device for storing a gaseous medium
EP1595764A1 (en) Pressure-reducing valve
DE2744917A1 (en) STRAIGHT PASS VALVE
WO2021239320A1 (en) Shut-off valve for a pressurized-gas vessel, pressurized-gas vessel
WO2021069314A1 (en) Valve device, in particular for controlling a gas flow
DE102018217103A1 (en) Valve device, in particular for controlling a gas flow
DE102019216655A1 (en) Method for operating a fuel cell system, shut-off valve and fuel cell stack
WO2021151616A1 (en) Tank device for storing a gaseous medium for a fuel cell system
DE4334370C1 (en) Exhaust valve of an internal combustion engine
EP3043114B1 (en) Regulating valve device
EP3642516A1 (en) Proportional valve for controlling a gaseous medium
DE102017209125A1 (en) metering valve
DE102017210355A1 (en) Proportional valve for controlling a gaseous medium
EP3626950B1 (en) Valve and method for producing a valve
WO2023001498A1 (en) Valve device for controlling a gaseous medium
EP4320354A1 (en) Device for recirculating anode gas in an anode circuit of a fuel cell system, and fuel cell system
DE102019213631A1 (en) Tank device for storing a gaseous medium
DE102022114019A1 (en) Piston for a valve, electromagnetic valve and fuel cell system
DE102022201983A1 (en) Shut-off valve and hydrogen tank system with shut-off valve
DE202020003011U1 (en) Valve with two opposing valve elements
DE19520871A1 (en) Control of exhaust gas recirculation quantities in IC engine
WO2023274636A1 (en) Valve device for a fuel cell

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20790206

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20790206

Country of ref document: EP

Kind code of ref document: A1