WO2022263937A1 - 水素供給装置 - Google Patents
水素供給装置 Download PDFInfo
- Publication number
- WO2022263937A1 WO2022263937A1 PCT/IB2022/054271 IB2022054271W WO2022263937A1 WO 2022263937 A1 WO2022263937 A1 WO 2022263937A1 IB 2022054271 W IB2022054271 W IB 2022054271W WO 2022263937 A1 WO2022263937 A1 WO 2022263937A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diameter portion
- hydrogen
- valve
- supply device
- injector
- Prior art date
Links
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 132
- 239000001257 hydrogen Substances 0.000 title claims abstract description 131
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 131
- 239000000446 fuel Substances 0.000 claims abstract description 39
- 238000002347 injection Methods 0.000 claims abstract description 28
- 239000007924 injection Substances 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 23
- 150000002431 hydrogen Chemical class 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
-
- 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
- H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the reactants
-
- 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
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
-
- 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 present invention relates to a hydrogen supply device for supplying hydrogen as a fuel to a fuel cell in a fuel cell system.
- Patent Document 1 discloses a fuel cell system in which a plurality of injectors are provided in parallel between an ejector that supplies hydrogen to a fuel cell and a hydrogen tank.
- the ejector utilizes negative pressure generated by hydrogen flowing from the hydrogen tank through the injector to suck hydrogen in the anode off-gas through the anode off-gas circulation passage, thereby separating the hydrogen supplied from the injector from the anode off-gas. and hydrogen to the anode region of the fuel cell.
- the anode off-gas is the gas discharged from the anode region of the fuel cell, and includes the remaining hydrogen that has not contributed to the power generation reaction in the anode region and the hydrogen that has flowed from the cathode region to the anode region during the power generation reaction. including permeated moisture.
- the moisture is discharged to the outside of the fuel cell system through the branched anode off-gas discharge passage in the middle of the anode off-gas circulation passage.
- Patent Document 1 Japanese Unexamined Patent Application Publication No. 2018-060757 [Summary of the Invention]
- Patent Document 1 discloses a method of selectively using a plurality of injectors according to the load required for the fuel cell system.
- having multiple injectors increases costs.
- it since it is composed of multiple parts, it is necessary to secure a predetermined space for mounting, which poses a problem of mountability.
- the present invention has been made against the background of the above problems, and can stably supply hydrogen to a fuel cell according to operating conditions without the need for a plurality of injectors.
- the object is to obtain a hydrogen supply device.
- a hydrogen supply device includes a solenoid valve, an injector that injects hydrogen from an injection hole when the solenoid valve is opened, and a flow of hydrogen that is injected from the injector.
- an ejector that sucks hydrogen in the anode off-gas of a fuel cell by negative pressure and supplies the hydrogen injected from the injector and the hydrogen in the anode off-gas to the fuel cell
- the solenoid valve includes a valve seat portion having the injection hole, and a valve body that is seated on the valve seat portion when the valve is closed, and the hydrogen flow path in the injection hole is adjusted according to the stroke amount of the valve body. It is constructed so that the cross-sectional area is variable.
- the hydrogen supply device of the present invention it is possible to stably supply hydrogen to the fuel cell according to the operating conditions without requiring a plurality of injectors.
- FIG. 1 It is the block diagram of the fuel cell system which has the hydrogen supply device which relates to this invention.
- FIG. 3 is the cross section diagram which shows the constitution of the injector which relates to the form of 1st execution of this invention typically.
- FIG. 4 is the cross section diagram which shows the state where the solenoid valve of the injector which relates to the form of 1st execution of this invention is opened.
- FIG. 5 is the cross section diagram which shows the state where the solenoid valve of the injector which relates to the form of 1st execution of this invention is opened.
- Fig. 6 shows an example of energization control to the solenoid portion of the injector in the first embodiment of the present invention.
- Fig. 7 shows an example of energization control to the solenoid portion of the injector in the first embodiment of the present invention.
- FIG. 8 is the cross section diagram which shows the state where the solenoid valve of the injector which relates to the form of 2nd execution of this invention is opened.
- Figure 9 is the cross section diagram which shows the state where the solenoid valve of the injector which relates to the form of 2nd execution of this invention is opened.
- FIG. 10 is the cross section diagram which shows the state where the solenoid valve of the injector which relates to the form of 2nd execution of this invention is opened.
- Fig. 11 shows an example of energization control to the solenoid portion of the injector according to the second embodiment of the present invention.
- Fig. 12 shows a modified example of the shape of the small diameter portion of the valve body and the valve seat portion in the injector according to the present invention.
- Fig. 13 shows another modified example of the shape of the small diameter portion of the valve body and the valve seat portion in the injector according to the present invention.
- FIG. 1 is a configuration diagram of a fuel cell system 100 equipped with a hydrogen supply device 10 according to the present invention.
- the overall configuration of the fuel cell system 100 will be described with reference to FIG.
- the fuel cell system 100 according to the present embodiment is mounted on a vehicle and generates electric power required by various devices such as a motor used for driving the vehicle.
- the fuel cell system 100 includes a hydrogen tank 39, a pressure reducing valve 42, a hydrogen supply device 10, a fuel cell 51, and a control unit 47.
- the fuel cell 51 comprises an anode region 52 and a cathode region 53.
- the fuel cell system 100 includes a circulation path 54 for refluxing hydrogen contained in the anode off-gas, which is the gas discharged from the anode region 52, to the hydrogen supply device 10.
- the anode region 52 of the fuel cell 51 is supplied with hydrogen from the hydrogen supply device 10 through the connecting pipe 50, and discharges the anode off-gas to the circulation path 54.
- the cathode region 53 of the fuel cell 51 is supplied with air from the air supply path 53&, and is discharged from the cathode region 53.
- the cathode off-gas which is the gas to be discharged, is discharged from the cathode off-gas discharge path 5313.
- the circulation path 54 is provided with a gas-liquid separator 55.
- the gas-liquid separator 55 removes moisture from the anode off-gas and discharges it to the discharge path 56.
- the discharge path 56 is provided with a discharge control valve 57 controlled by a control unit 47 . By controlling the discharge control valve 57 by the control unit 47, the timing and amount of water discharged from the gas-liquid separator 55 are controlled.
- the hydrogen supply device 10 includes an ejector 103 and an injector 1013 ( see Fig. 2 ).
- the ejector 103 supplies hydrogen supplied from the hydrogen tank 39 via the injector 10b and hydrogen in the anode off-gas to the fuel cell 51 via the connecting pipe 50.
- the connecting pipe 50 is provided with a pressure sensor 48 that measures the pressure of hydrogen in the connecting pipe 50 .
- the pressure sensor 48 measurements are sent to the control unit 47 .
- the control unit 47 controls the pressure in the anode region 52 by controlling the amount of hydrogen supplied from the hydrogen supply device 10 to the fuel cell 51 based on the value measured by the pressure sensor 48. .
- Hydrogen in the hydrogen tank 39 is decompressed through the pressure reducing valve 42 arranged in the supply pipe 44 and supplied to the injector 10b of the hydrogen supply device 10.
- the hydrogen supplied to the injector 10b is further decompressed in the injector 10b and supplied to the fuel cell 51 via the ejector 103.
- the injector 1013 can use an electromagnetic proportional control valve in which the stroke amount of the valve member is variable according to the supplied current value and the area of the hydrogen passage can be adjusted.
- Injector 1013 is controlled by control unit 47 .
- the pressure reducing valve 42 is configured as a mechanical valve that opens when the pressure of hydrogen supplied from the hydrogen tank 39 exceeds the set force that the valve member receives from the elastic body.
- the pressure reducing valve 42 can also use an electromagnetic proportional control valve in which the stroke amount of the valve member is variable depending on the supplied current value and the area of the hydrogen passage can be adjusted. In this case, the pressure reducing valve 42 is controlled by the control unit 47.
- a first shutoff valve 40 is arranged between the hydrogen tank 39 and the pressure reducing valve 42, and a second shutoff valve 41 is arranged between the pressure reducing valve 42 and the injector 1013. are placed.
- the first shutoff valve 40 can shut off the inflow of hydrogen from the hydrogen tank 39 to the pressure reducing valve 42 as needed.
- the second shutoff valve 41 can shut off the inflow of hydrogen from the pressure reducing valve 42 to the injector 1013 as needed.
- the first shut-off valve 40 and the second shut-off valve 41 are controlled by a control unit 47 .
- FIG. 2 is a cross-sectional view schematically showing the configuration of the hydrogen supply device 10 according to the present invention.
- the hydrogen supply device 10 includes an ejector 10 & and an injector 1013.
- the injection hole 23 side of the injector 10b is connected to the end of the ejector 10& , and the longitudinal axes of the ejector 103 and the injector 1013 are aligned. Configured. With this configuration , the injector 1013 injects hydrogen supplied from the hydrogen tank 39 into the ejector 10&.
- the ejector 103 has a substantially cylindrical shape and has a hollow portion with a partially different inner diameter in the longitudinal direction.
- the hollow portion includes an injector connection portion 5, a negative pressure generation chamber 11, a diffuser portion 12, and a hydrogen release portion 13 in order from the side to which the injector 1013 is connected.
- the injector connection 5 fits into the housing 1 of the injector 1013.
- the injector connecting portion 5 of the ejector 103 and the housing 1 of the injector 10b are fixed by an appropriate method such as press fitting or welding. With this configuration, hydrogen injected from the injector 1013 is injected into the negative pressure generation chamber 11, the diffuser section 12, and the hydrogen release section 13.
- the side where the injector connection part 5 is formed is the upstream side
- the side where the hydrogen release part 13 is formed is the downstream side. side.
- the diffuser portion 12 is formed such that the inner diameter 123 increases toward the downstream side.
- the hydrogen release portion 13 is formed so that the inner diameter 133 is uniform in the longitudinal direction.
- the connecting portion between the negative pressure generating chamber 11 and the diffuser portion 12 and the connecting portion between the diffuser portion 12 and the hydrogen release portion 13 are formed so as to have no steps.
- the connecting portion between the negative pressure generating chamber 11 and the injector connecting portion 5 is perpendicular to the longitudinal direction and faces the injector 1013 side in order to accommodate the valve seat portion 6 of the injector 1013. is a surface, stepped 5 & is formed
- the ejector 103 has a circulating hydrogen suction port 2 formed in a direction perpendicular to the longitudinal direction of the ejector 103 at a portion in which the negative pressure generating chamber 11 is formed. Have 2.
- a circulation path 54 is connected to the circulation hydrogen inlet 22.
- the inside becomes negative pressure. Due to this negative pressure, the hydrogen in the anode off-gas in the circulation path 54 is sucked from the circulation hydrogen inlet 22 and flows to the downstream diffuser section 12 together with the hydrogen injected from the injector 10b.
- FIG. 3 is a cross-sectional view schematically showing the configuration of the injector 10b according to the present embodiment. Details of the injector 1013 will be described below with reference to FIG.
- the injector 1013 is composed of a solenoid valve 25, and injects hydrogen supplied from the hydrogen tank 39 through the hydrogen inlet 21 into the ejector 103 through the nozzle hole 23.
- the solenoid valve 25 includes a solenoid portion (not shown), a housing 1, a valve body 2, a spring 3, a guide member 4, and a valve seat portion 6.
- the housing 1 has a cylindrical shape, and includes a valve body 2, a spring 3, a guide member 4, a valve seat portion 6, and a solenoid portion (not shown) inside.
- the valve seat portion 6 has a cylindrical shape, and the central axis of the cylindrical shape coincides with the longitudinal axis of the injector 1013.
- a hollow portion of the valve seat portion 6 serves as the nozzle hole 23 in this embodiment.
- the end face facing the ejector 103 side is in contact with the stepped portion 5 & of the ejector 10 & (see FIG. 2).
- the end face facing away from the ejector 103 serves as the valve seat side seat face 63 , and when the injector 10b is closed, the valve body 2 is It abuts against the valve body side seat surface 2b3 .
- the valve seat portion 6 is previously fixed in the injector connection portion 5 of the ejector 103 by press-fitting, welding, or other suitable method. .
- the valve body 2 is formed of a plurality of cylindrical members having different outer diameters, and includes a small diameter portion 23, a large diameter portion 213 having an outer diameter larger than the small diameter portion 23, and a small diameter portion 213.
- a guide portion 20 having an outer diameter larger than that of the portion 23 and smaller than that of the large diameter portion 213 is provided.
- the central axis of each of the small diameter portion 2 &, the large diameter portion 213, and the guide portion 20 coincides with the longitudinal axis of the injector 10b.
- the small diameter portion 23 is formed on the side of the ejector 103 when viewed from the large diameter portion 213, and when the injector 1013 is closed or when the stroke amount of the valve body 2 is small, the inside of the injection hole 23 is closed.
- Guide part 2 is formed on the side opposite to the ejector 103 when viewed from the large diameter portion 213. Further, when the injector 1013 is closed, the valve body side seat surface 2b3 of the large diameter portion 213, which faces the ejector 103 side and is a surface perpendicular to the central axis, is aligned with the valve seat portion 6. abuts on the seat surface 63 on the valve seat side.
- the outer diameter of the guide portion 20 is larger than the small diameter portion 23 and smaller than the large diameter portion 213, but the guide portion 20 has a large diameter. The outer diameter may be smaller than the diameter portion 213 , and may be the same as the small diameter portion 23 or smaller than the small diameter portion 23 .
- Spring 3 is a coil spring arranged between the guide member 4 and the large diameter portion 213 of the valve body 2, and holds the valve body 2 on the valve seat. A predetermined set force is applied to the portion 6.
- the guide portion 2 of the valve body 2 is positioned inside the spring 3 and guides the spring 3.
- the guide member 4 has a cylindrical shape, and its outer diameter portion is fixed to the housing 1 by an appropriate method such as press-fitting or welding.
- the inner surface 43 of the hollow portion of the guide member 4 guides the guide portion 20 of the valve body 2.
- the housing 1 includes a hydrogen inlet 21 formed in a direction perpendicular to the longitudinal direction near the large diameter portion 213 of the valve body 2.
- the number of hydrogen inlets 21 may be one or plural, and the number is not limited.
- the hydrogen inlet 21 is supplied with hydrogen decompressed to a predetermined pressure from a high-pressure hydrogen tank 39 via a decompression valve 42.
- the solenoid valve 25 of the injector 1013 has a solenoid portion (not shown) on the opposite side of the ejector 103 when viewed from the valve body 2.
- the solenoid valve 25 When the solenoid valve 25 is closed, the set force of the spring 3 causes the valve body side seat surface 2b3 formed in the valve body 2 to be seated on the valve seat side seat surface 6 & formed in the valve seat portion 6. doing.
- the control unit 47 applies an electric current to the solenoid section, so that the valve body 2 is caught by the set force of the spring 3 and attracted to the solenoid section side.
- a valve-side seat surface 2 b 3 formed on the valve body 2 separates from a valve-seat-side seat surface 6 3 formed on the valve seat portion 6 .
- the solenoid valve 25 opens, hydrogen supplied from the hydrogen tank 39 through the hydrogen inlet 21 is injected from the nozzle hole 23 into the ejector 108 .
- the injector 1013 is made variable by the stroke amount of the valve body 2 depending on the current value applied to the solenoid part, and is an electromagnetic proportional type that can adjust the amount of hydrogen passing.
- Configured as a valve. 4 and 5 show the state in which the solenoid valve 25 of the injector 1013 is open.
- the solenoid valve 25 is open, but the stroke amount of the valve body 2 is small, and part of the small diameter portion 23 of the valve body 2 remains inside the nozzle hole 23 .
- the flow path of hydrogen in the nozzle hole 23 is the gap between the inner diameter of the nozzle hole 23 and the outer diameter of the small diameter portion 23 of the valve body 2, so the injection amount of hydrogen is relatively small.
- the stroke amount of the valve body 2 is larger than that in FIG. , so that it substantially coincides with the end of the injection hole 23 on the side of the large diameter portion 2b.
- the amount of hydrogen injected in FIG. 5 is greater than in the state of FIG.
- FIG. 6 shows an example of energization control to the solenoid portion of the injector 1013 in the first embodiment of the present invention.
- the horizontal axis D indicates time
- the vertical axis P indicates the stroke amount of the valve body 2 .
- the applied current is pulsed for the following reasons. If the valve is small, the amount of hydrogen required is also small.Therefore, intermittent operation with a small stroke increases the amount of hydrogen gas that passes through each valve opening, and reduces the passage area at that time.
- the control unit 47 is configured to increase the flow rate of the hydrogen gas, thereby generating a negative pressure in the negative pressure generation chamber and ensuring the circulation rate of the anode off-gas. Applied current is controlled at arbitrary intervals so that the necessary amount of hydrogen gas can be secured at low load by operation.
- the injection form shown in Fig. 6 corresponds to pulse injection.
- FIG. 7 shows an example of energization control when the load required for the fuel cell 51 is larger than the example of FIG.
- the horizontal axis D indicates time
- the vertical axis P indicates the stroke amount of the valve body 2.
- a current value larger than that of the example of FIG. 6 is continuously applied to the solenoid portion, and the stroke amount of the valve body 2 is also larger than that of FIG. is used.
- the current may be pulsed even in the region represented by symbol 3.
- the applied current should be pulsed or continuous, and what the current value should be, are set in advance through tests and simulations, and the setting information is transmitted to the control unit. It is stored in a predetermined area of 47.
- the control unit 47 is based on the operating conditions of the vehicle in which the fuel cell 51 is mounted, the load required for the fuel cell 51, the environmental conditions such as outside temperature and atmospheric pressure, the measured value of the pressure sensor 48, etc. It reads out the appropriate energization form from the saved setting information, and applies the prescribed current value in the prescribed form to the solenoid section.
- the hydrogen supply apparatus 10 according to the second embodiment has the valve seat portion 6 and the small diameter portion of the valve body 2 in the injector 1013. 2 & shape is different.
- FIG. 8 is a cross-sectional view schematically showing the configuration of an injector 1013 according to a second embodiment of the present invention.
- the small diameter portion 2 & of the valve body 2 is formed so that the outer diameter becomes smaller toward the ejector 10 & side.
- the inner diameter of the injection hole 23 is also formed so that the inner diameter becomes smaller toward the ejector 103 side.
- the gap between the inner diameter of the injection hole 23 and the outer diameter of the small diameter portion 23 of the valve body 2 is formed so as to decrease toward the ejector 103 side.
- FIG. 8 shows a state in which the stroke amount of the valve body 2 is slight and a small amount of hydrogen is injected from the injector 1013.
- FIG. 9 shows a state in which the stroke amount of the valve body 2 is larger than that in FIG.
- the amount of hydrogen injected in the state of FIG. 9 is greater than in the state of FIG.
- the stroke amount of the valve body 2 is larger than that in FIG. It is in a state of substantially matching the end of the hole 23 on the large diameter portion 213 side.
- the amount of hydrogen injected in FIG. 10 is even greater than in the state of FIG.
- FIG. 11 shows an example of energization control to the solenoid portion of the injector 1013 when the states shown in FIGS. 8 to 10 are used.
- the horizontal axis indicates time
- the vertical axis indicates the stroke amount of the valve body 2 .
- the area indicated by symbol 81 is the stroke amount of the valve body 2 from zero to the state of FIG. corresponds to a relatively small state. Further, in the vertical axis of FIG. 11, the stroke amount of the valve body 2 is larger in the region indicated by the symbol 82 than in the region 81. That is, the stroke amount of the valve body 2 in the area of 82 is the state of FIG. 9, more specifically, the stroke amount of the valve body 2 shown in FIG. Corresponds to the state during the stroke amount. 11 corresponds to the stroke amount of the valve body 2 shown in FIG. corresponds to the state in which the part 2 & has slipped out of the injection hole 2 3).
- FIG. 6 corresponds to a valve shape in which the inner diameter of the nozzle hole 23 and the outer diameter of the small diameter portion 23 of the valve body 2 are parallel when viewed in a cross section including the central axis, as shown in FIGS. ing.
- FIGS. 8 to 10 as the stroke amount of the valve body 2 increases, the gap between the inner diameter of the injection hole 23 and the small diameter portion 2& of the valve body 2 increases. Therefore, in the region indicated by 82 in Fig. 11, the small diameter portion
- FIG. 12 shows a modification of the shape of the small diameter portion 23 of the valve body 2 and the valve seat portion 6 in the injector 10b.
- the injection hole 23 is located at the end of the valve body 2 on the side of the large diameter portion 213, and when viewed in a cross section including the central axis, the inner diameter increases toward the large diameter portion 213 side. It has an enlarged diameter portion 633 formed to be.
- the small diameter portion 23 of the valve body 2 is formed at the end on the ejector 103 side so that the outer diameter becomes smaller toward the ejector 103 side when viewed in a cross section including the central axis. with a reduced diameter portion 2 &&.
- the angle of the enlarged diameter portion 633 and the reduced diameter portion 233 an example of 45 degrees with respect to the axial direction is shown, but the angle is 4 Various angles are possible, not limited to 5 degrees.
- the sizes of the enlarged diameter portion 6 && and the reduced diameter portion 233 can also be varied.
- only the ends or the entirety of the ends of the enlarged diameter portion 633 and the reduced diameter portion 233 may be curved so that no corners are generated at the ends. can. Namely, the enlarged diameter portion 6
- the reduced diameter portion 2 3 3 is the ejector of the small diameter part 2 3 1 0 ⁇ 0 2022/263937 ⁇ (:1' 2022/054271
- the end portion on the 3 side is formed so that the outer diameter becomes smaller toward the ejector 103 side, and the detailed shape thereof depends on the state of the solenoid valve 25 when the solenoid valve 25 is opened. , is determined by tests and simulations, taking into account the relationship between the stroke amount of the valve body 2 and the flow rate and flow velocity of hydrogen.
- Fig. 13 shows another modification of the shape of the small diameter portion 23 of the valve body 2 and the valve seat portion 6 in the injector 10b.
- the small diameter portion 23 of the valve body 2 is formed by two cylindrical portions with different outer diameters.
- the small diameter portion 23 is composed of a first small diameter portion 2313 and a second small diameter portion 230 from the large diameter portion 213 side. are also formed to have a larger outer diameter.
- first small diameter portion 2313 and the second small diameter portion 23 ° and their respective axial lengths It is possible to adopt various combinations of the outer diameters of the first small diameter portion 2313 and the second small diameter portion 23 ° and their respective axial lengths.
- the shape of the first small diameter portion 2 & 13 and the second small diameter portion 2 & ⁇ is determined by the relationship between the stroke amount of the valve body 2 and the flow rate and flow rate of hydrogen when the solenoid valve 25 is opened. Considered and determined by testing and simulation.
- the combination of the shapes of the small diameter portion 23 of the valve body 2 and the valve seat portion 6 is the first embodiment, the second embodiment, Figs. is not limited to the combinations shown in
- the small diameter portion 2 & of the valve disc 2 in the first embodiment and the valve seat portion 6 in the second embodiment are combined, or the small diameter portion 2 of the valve disc 2 shown in FIG.
- Various combinations such as combining & with the valve seat portion 6 shown in FIG. 12 are possible.
- the small diameter portion 23 of the valve body 2 is composed of two stages of small diameter portions (first small diameter portion 2313 and second small diameter portion 2313 and second small diameter portion 2313) having different outer diameters.
- the small diameter portion 23 may be formed of, for example, three or four steps of small diameter portions. is not limited to
- valve disc 23: small diameter portion, 233: reduced diameter portion
- 2ab first small diameter portion
- 2a second small diameter portion
- 213 large diameter portion
- 3 Spring
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Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22727437.0A EP4358198A1 (en) | 2021-06-17 | 2022-05-09 | Hydrogen supply device |
JP2023529143A JPWO2022263937A1 (ja) | 2021-06-17 | 2022-05-09 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2021-100736 | 2021-06-17 | ||
JP2021100736 | 2021-06-17 |
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WO2022263937A1 true WO2022263937A1 (ja) | 2022-12-22 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/IB2022/054271 WO2022263937A1 (ja) | 2021-06-17 | 2022-05-09 | 水素供給装置 |
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EP (1) | EP4358198A1 (ja) |
JP (1) | JPWO2022263937A1 (ja) |
WO (1) | WO2022263937A1 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120315559A1 (en) * | 2011-06-09 | 2012-12-13 | Hyundai Motor Company | Apparatus for controlling hydrogen supply of fuel cell system and method for controlling the same |
US20190309711A1 (en) * | 2018-04-04 | 2019-10-10 | Honda Motor Co., Ltd. | Injector device |
-
2022
- 2022-05-09 WO PCT/IB2022/054271 patent/WO2022263937A1/ja active Application Filing
- 2022-05-09 EP EP22727437.0A patent/EP4358198A1/en active Pending
- 2022-05-09 JP JP2023529143A patent/JPWO2022263937A1/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120315559A1 (en) * | 2011-06-09 | 2012-12-13 | Hyundai Motor Company | Apparatus for controlling hydrogen supply of fuel cell system and method for controlling the same |
US20190309711A1 (en) * | 2018-04-04 | 2019-10-10 | Honda Motor Co., Ltd. | Injector device |
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EP4358198A1 (en) | 2024-04-24 |
JPWO2022263937A1 (ja) | 2022-12-22 |
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