WO2021069314A1 - Dispositif de vanne en particulier permettant de réguler un écoulement gazeux - Google Patents

Dispositif de vanne en particulier permettant de réguler un écoulement gazeux Download PDF

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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
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.)
Ceased
Application number
PCT/EP2020/077619
Other languages
German (de)
English (en)
Inventor
Friedrich Howey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention se rapporte à un dispositif de vanne (1), en particulier pour réguler un écoulement gazeux dans un système de pile à combustible, ledit dispositif de vanne comprenant un boîtier de vanne (100), dans lequel est disposé un élément de vanne (2) qui peut se déplacer le long d'un axe longitudinal (12). L'élément de vanne (2) présente une région en forme de plaque (22), sur laquelle est formée une première pièce moulée (21) est formée, ladite première pièce moulée (21) entrant en interaction avec un premier siège de vanne (102) formé sur le boîtier de vanne (100) pour ouvrir et fermer une liaison entre une entrée (4) du dispositif de vanne (1) et une sortie (5) du dispositif de vanne (1). En outre, une seconde pièce moulée (20) est formée sur la région en forme de plaque (22) de l'élément de vanne (2), ladite seconde pièce moulée (20) entrant en interaction avec un second siège de vanne (101) formé sur le boîtier de vanne (100) pour ouvrir et fermer une liaison entre une région de pression ambiante (10) et la sortie (5).
PCT/EP2020/077619 2019-10-10 2020-10-02 Dispositif de vanne en particulier permettant de réguler un écoulement gazeux Ceased WO2021069314A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019215500.6 2019-10-10
DE102019215500.6A DE102019215500A1 (de) 2019-10-10 2019-10-10 Ventilvorrichtung, insbesondere zur Steuerung einer Gasströmung

Publications (1)

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

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/077619 Ceased WO2021069314A1 (fr) 2019-10-10 2020-10-02 Dispositif de vanne en particulier permettant de réguler un écoulement gazeux

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DE (1) DE102019215500A1 (fr)
WO (1) WO2021069314A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001029433A2 (fr) * 1999-10-15 2001-04-26 Imi Norgren-Herion Fluidtronic Gmbh & Co. Kg Dispositif de surveillance dynamique de differences de pression
DE10139748A1 (de) * 2000-09-14 2002-05-02 Wabco Gmbh & Co Ohg Anhängerbremsventil für einen Anhänger mit elektronischer Bremsregelung
DE102009025502A1 (de) * 2009-06-19 2010-12-30 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Pneumatische Ventileinrichtung mit schwebend gelagertem Ventilkörper
DE102016224273A1 (de) 2016-12-06 2018-06-07 Robert Bosch Gmbh Ventilvorrichtung
DE102017210362A1 (de) * 2017-06-21 2018-12-27 Robert Bosch Gmbh Proportionalventil zum Steuern eines gasförmigen Mediums
DE102018217103A1 (de) * 2018-10-05 2020-04-09 Robert Bosch Gmbh Ventilvorrichtung, insbesondere zur Steuerung einer Gasströmung
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 (fr) * 1999-10-15 2001-04-26 Imi Norgren-Herion Fluidtronic Gmbh & Co. Kg Dispositif de surveillance dynamique de differences de pression
DE10139748A1 (de) * 2000-09-14 2002-05-02 Wabco Gmbh & Co Ohg Anhängerbremsventil für einen Anhänger mit elektronischer Bremsregelung
DE102009025502A1 (de) * 2009-06-19 2010-12-30 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Pneumatische Ventileinrichtung mit schwebend gelagertem Ventilkörper
DE102016224273A1 (de) 2016-12-06 2018-06-07 Robert Bosch Gmbh Ventilvorrichtung
DE102017210362A1 (de) * 2017-06-21 2018-12-27 Robert Bosch Gmbh Proportionalventil zum Steuern eines gasförmigen Mediums
DE102018217103A1 (de) * 2018-10-05 2020-04-09 Robert Bosch Gmbh Ventilvorrichtung, insbesondere zur Steuerung einer Gasströmung
US20200122848A1 (en) * 2018-10-19 2020-04-23 Goodrich Corporation Aspirator air vent valve

Also Published As

Publication number Publication date
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