WO2019015841A1 - Dispositif de dosage servant à réguler un milieu gazeux - Google Patents

Dispositif de dosage servant à réguler un milieu gazeux Download PDF

Info

Publication number
WO2019015841A1
WO2019015841A1 PCT/EP2018/064626 EP2018064626W WO2019015841A1 WO 2019015841 A1 WO2019015841 A1 WO 2019015841A1 EP 2018064626 W EP2018064626 W EP 2018064626W WO 2019015841 A1 WO2019015841 A1 WO 2019015841A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal
metering device
closing
closing element
housing
Prior art date
Application number
PCT/EP2018/064626
Other languages
German (de)
English (en)
Inventor
Jochen Wessner
Martin Katz
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
Priority to CN201880047994.9A priority Critical patent/CN110945694B/zh
Publication of WO2019015841A1 publication Critical patent/WO2019015841A1/fr

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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/025—Actuating devices; Operating means; Releasing devices electric; magnetic actuated by thermo-electric means
    • 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
    • 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

Definitions

  • the invention relates to a metering device for controlling a gaseous medium, in particular hydrogen, for example for use in vehicles with fuel cell drive.
  • DE 10 2012 204 565 A1 describes a metering device for metering a gaseous medium, in particular hydrogen, in the form of a proportional valve.
  • the metering device comprises a nozzle body, a closing element and an elastic sealing element.
  • In the nozzle body at least one passage opening is formed, which can be released or closed by the closing element on a valve seat.
  • the closing element can be moved by means of a magnet armature, which can be actuated via an electromagnet.
  • Proportional valves are characterized to the effect that when using these only small pressure fluctuations in the anode path of a fuel cell occur and quiet operation can be ensured. In the normal operating range of the proportional valve, frequent opening and closing operations occur. To optimize flushing processes in the anode path of the fuel cell or for optimized operation of a suction jet pump in a fuel cell assembly, additional switching operations may also be desired.
  • the metering device according to the invention for controlling a gaseous medium, in particular hydrogen, has the advantage in this respect that the
  • Opening and closing operations of the metering device is realized via an active control of the closing element.
  • the metering device for controlling a gaseous medium, in particular hydrogen a valve housing, in which an interior space is formed.
  • a heating element and a closing element are arranged in the interior.
  • the closing element cooperates with a valve seat for opening or closing at least one passage opening.
  • a bi-metal is disposed in the interior, which is in thermal contact with the heating element. The closing element is applied to the bi-metal.
  • Bi-metals are characterized in that they are made of layers of two different metals, which are connected to each other in a fluid or form-fitting manner. Due to the different coefficients of thermal expansion of the metals, bi-metals deform when the temperature changes.
  • the direct arrangement of the bi-metal on the closing element thus enables by means of the thermal displacement of the bi-metal an active activation of the opening and closing operation of the closing element.
  • the mass flow of the gaseous medium can be regulated.
  • the temperature of the medium inside the metering device can be determined by means of the heating current applied to the heating element and the mass flow rate of the gaseous medium.
  • the bi-metal is formed in cross-section L-shaped.
  • the valve housing comprises a holding body and a nozzle body, wherein the bi-metal is fixed between a first shoulder and a second shoulder of the holding body and rests on the second shoulder. This allows the bi-metal to open simple and compact way in the dosing device function optimized to be arranged.
  • the heating element comprises a heating coil and a coil housing, wherein the bi-metal is arranged on the coil housing.
  • a heat-conducting element is arranged in the coil housing for heat conduction, and advantageously the bi-metal is at least partially received in a recess of the coil housing. This ensures a fast and effective control and thus thermal adjustment of the bi-metal. This leads to a compact design and optimal functioning of the entire metering device.
  • an elastic sealing element is arranged between the valve seat and the closing element.
  • the valve seat is designed as a flat seat.
  • a closing spring is arranged between the valve housing and the closing element, wherein the
  • Closing spring presses the closing element with a spring force F to the bi-metal.
  • the closing spring thus ensures the seating of the elastic sealing element on the valve seat, so that an optimal tightness of the metering device is achieved.
  • a direct arrangement of the closing element is thus ensured on the bi-metal, so that the lifting movement of the closing element is directly controllable via the thermal displacement of the bi-metal.
  • a passage is formed in the valve housing, through which the valve housing can be filled with gaseous medium.
  • the metering device described is preferably suitable in a fuel cell arrangement for controlling a hydrogen supply to an anode region of a fuel cell. Advantages are the low pressure fluctuations in the anode path and a quiet operation.
  • Fuel cell shown. It shows in
  • FIG. 1 shows a first embodiment of a metering device according to the invention with a bi-metal in longitudinal section, wherein only the right half is shown,
  • Fig. 2 shows a second embodiment of a metering device according to the invention in the region of the bi-metal in longitudinal section.
  • Fig.l shows a first embodiment of the metering device 1 according to the invention in longitudinal section.
  • the metering device 1 has a valve housing 2, which comprises a holding body 3 and a nozzle body 4, which are gas-tightly connected to each other and fixed by means of a clamping nut 21 against each other.
  • a valve housing 2 which comprises a holding body 3 and a nozzle body 4, which are gas-tightly connected to each other and fixed by means of a clamping nut 21 against each other.
  • an inner space 50 is formed, in which a heating element 7 is arranged with a heating coil 70 and a coil housing 700.
  • the heating coil 70 can be controlled via an electrical contact 8, which is fixed in the holding body 3 via a clamping element 9.
  • a closing element 13 is arranged, on which an elastic sealing element 14 is arranged and fixedly connected thereto.
  • the elastic sealing element 14 cooperates with a valve seat 12 for opening and closing a passage opening 17.
  • the passage opening 17 is formed in a seat element 11, which is fixedly connected to the nozzle body 4.
  • the valve seat 12 is formed.
  • a in cross-section L-shaped bi-metal 15 is arranged with a first arm 26 and a second arm 27 which is fixed between a first shoulder 25 and a second shoulder 19 of the holding body 3 and on the second paragraph 19 rests.
  • the bi-metal 15 is arranged on the coil housing 700 and seals this against the interior 50 from.
  • the closing element 13 has a collar 18 with which the closing element 13 rests on the first arm 26 of the bi-metal 15.
  • the closing element 13 is pressed by means of a closing spring 5 with a force F against the bi-metal 15 and in the direction of the valve seat 12.
  • the closing spring 5 is mounted between a further shoulder 22 of the holding body 3 and a valve seat 12 facing away from the end 23 of the closing element 13.
  • a flow channel 10 is formed in the holding body 3, whereby the interior 50 of the metering device 1 with gaseous medium, for example hydrogen, can be filled.
  • gaseous medium for example hydrogen
  • the stroke of the closing element 13 can be adjusted by the amount of current at the
  • Heating coil 70 can be adjusted. The higher the current intensity at the heating coil 70, the greater the stroke of the closing element 13 due to the greater bending of the bi-metal 15 and the higher the gas flow in the metering device 1, since the force of the closing spring 5 is stroke-dependent. If the current is reduced at the heating coil 70, and the stroke of the closing element 13 is reduced and thus throttled the gas flow.
  • the bi-metal resumes its original shape and the closing element 13 moves by means of the closing spring 5 in the direction of the passage opening 17, so that the closing element 13 rests again on the valve seat 12 and the passage opening 17 is closed.
  • the gas flow through the metering device 1 is interrupted.
  • FIG. 2 shows a second embodiment of a metering device 1 according to the invention in the region of the bi-metal in a longitudinal section. Components of the same function are designated by the same reference numerals.
  • the bi-metal 15 is received here with the second arm 27 in a recess 20 of the bobbin case 700.
  • a heat-conducting element 16 is further arranged, so that a faster heat transfer takes place on the bi-metal. This accelerates the bending of the bi-metal resulting from the temperature change and thus achieves a faster opening process.
  • the basic structure and the operation of the second embodiment correspond to those of the first.
  • a characteristic field can be determined, from which the temperature of the medium in the metering device 1 can be determined.
  • the mechanical stress of the bi-metal 15 remains in the elastic range, usually below 20 MPa, and the temperature does not exceed the linearity range of about 200 ° C of the coefficient of thermal expansion, so that the bending of the bi-metal supports an optimal functioning of the dosing device 1 .
  • the metering device 1 according to the invention can be used, for example, in a fuel cell arrangement.
  • hydrogen can be supplied from a tank to an anode region of the fuel cell.
  • the metering device 1 for controlling a gaseous medium thus has the advantage that in this case the supply of the first gaseous medium and the metered addition of hydrogen into the anode region of the fuel cell by means of electronically controlled adjustment of the flow cross section of the passage opening 17 while controlling the anode pressure can be done much more accurately , As a result, the reliability and durability of the connected fuel cell are significantly improved, since hydrogen is always supplied in a superstoichiometric proportion. In addition, consequential damage, such as damage to a downstream catalyst can be prevented.

Landscapes

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

Abstract

L'invention concerne un dispositif de dosage (1) servant à réguler un milieu gazeux, en particulier de l'hydrogène, ce dispositif de dosage comprenant un corps de soupape (2) dans lequel est ménagé un espace intérieur (50). Un élément chauffant (7) et un élément obturateur (13) à mouvement de levée sont agencés dans l'espace intérieur (50). L'élément obturateur (13) coopère avec un siège de soupape (12) pour ouvrir ou fermer au moins une ouverture de passage (17). Par ailleurs, un bilame (15) est disposé dans l'espace intérieur (50) et se trouve en contact thermique avec l'élément chauffant (7), l'élément obturateur (13) étant en appui contre ce bilame (15).
PCT/EP2018/064626 2017-07-17 2018-06-04 Dispositif de dosage servant à réguler un milieu gazeux WO2019015841A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880047994.9A CN110945694B (zh) 2017-07-17 2018-06-04 用于控制气态介质的配量设备

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017212201.3 2017-07-17
DE102017212201.3A DE102017212201A1 (de) 2017-07-17 2017-07-17 Dosiervorrichtung zum Steuern eines gasförmigen Mediums

Publications (1)

Publication Number Publication Date
WO2019015841A1 true WO2019015841A1 (fr) 2019-01-24

Family

ID=62555063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/064626 WO2019015841A1 (fr) 2017-07-17 2018-06-04 Dispositif de dosage servant à réguler un milieu gazeux

Country Status (3)

Country Link
CN (1) CN110945694B (fr)
DE (1) DE102017212201A1 (fr)
WO (1) WO2019015841A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1195077A (fr) * 1958-04-25 1959-11-13 Saunier Duval Brûleur à gaz à régulateur de pression incorporé destiné aux appareils producteurs d'eau chaude et notamment aux chauffe-eau et chauffe-bains instantanés à gaz
US3229956A (en) * 1962-03-02 1966-01-18 Stevens Mfg Co Inc Diaphragm fluid valve
US3346231A (en) * 1964-12-29 1967-10-10 Honeywell Inc Ambient compensated bimetal actuated valve
GB2280944A (en) * 1993-08-10 1995-02-15 Carver & Co Gas valve
DE102012204565A1 (de) 2012-03-22 2013-09-26 Robert Bosch Gmbh Proportionalventil mit verbessertem Dichtsitz

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014207182A1 (de) * 2014-04-15 2015-10-15 Robert Bosch Gmbh Direkteinblasendes Gasventil
DE102014224348A1 (de) * 2014-11-28 2016-06-02 Robert Bosch Gmbh Direkteinblasender Gasinjektor mit verbessertem Öffnungs- und Schließverhalten

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1195077A (fr) * 1958-04-25 1959-11-13 Saunier Duval Brûleur à gaz à régulateur de pression incorporé destiné aux appareils producteurs d'eau chaude et notamment aux chauffe-eau et chauffe-bains instantanés à gaz
US3229956A (en) * 1962-03-02 1966-01-18 Stevens Mfg Co Inc Diaphragm fluid valve
US3346231A (en) * 1964-12-29 1967-10-10 Honeywell Inc Ambient compensated bimetal actuated valve
GB2280944A (en) * 1993-08-10 1995-02-15 Carver & Co Gas valve
DE102012204565A1 (de) 2012-03-22 2013-09-26 Robert Bosch Gmbh Proportionalventil mit verbessertem Dichtsitz

Also Published As

Publication number Publication date
CN110945694A (zh) 2020-03-31
CN110945694B (zh) 2023-06-13
DE102017212201A1 (de) 2019-01-17

Similar Documents

Publication Publication Date Title
DE102017212726B3 (de) Strahlpumpeneinheit zum Steuern eines gasförmigen Mediums
WO2019020267A1 (fr) Soupape proportionnelle servant à réguler un fluide gazeux
DE102017210367A1 (de) Proportionalventil zum Steuern eines gasförmigen Mediums
EP2798193B1 (fr) Soupape
EP3478957B1 (fr) Soupape d'injection d'un carburant gazeux
WO2019037924A1 (fr) Soupape proportionnelle servant à réguler un fluide gazeux
DE102018200314A1 (de) Dosierventil und Strahlpumpeneinheit zum Steuern eines gasförmigen Mediums
DE102010025171B4 (de) Fluiddruckumschaltventil
EP3688347B1 (fr) Soupape de détente pour circuit de refroidissement ou de climatisation
DE102013100440A1 (de) Hochdruckventil
WO2019015841A1 (fr) Dispositif de dosage servant à réguler un milieu gazeux
WO2018233912A1 (fr) Soupape proportionnelle pour la commande d'un milieu gazeux et agencement de piles à combustible
WO2018233909A1 (fr) Vanne proportionnelle servant à réguler un flux de substance gazeuse
DE102017216132A1 (de) Dosiervorrichtung zum Steuern eines gasförmigen Mediums
EP1870621B1 (fr) Robinet de commande d'un liquide
EP3610182B1 (fr) Soupape proportionnelle servant à commander un milieu sous forme gazeuse
WO2018233911A1 (fr) Vanne proportionnelle servant à réguler un flux de substance gazeuse
DE102008042531A1 (de) Ventilanordnung zur Kraftstoffhochdruckeinspritzung
DE102017216135A1 (de) Dosiervorrichtung zum Steuern eines gasförmigen Mediums
DE102017210362A1 (de) Proportionalventil zum Steuern eines gasförmigen Mediums
WO2005026532A1 (fr) Dispositif de dosage
DE102004009461A1 (de) Ventil
DE102004009460A1 (de) Ventil
WO2018202345A1 (fr) Dispositif de dosage servant à réguler un milieu gazeux
DE102006052816A1 (de) Brennstoffeinspritzventil

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: 18729643

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: 18729643

Country of ref document: EP

Kind code of ref document: A1