WO2007013474A1 - 燃料電池用燃料容器 - Google Patents
燃料電池用燃料容器 Download PDFInfo
- Publication number
- WO2007013474A1 WO2007013474A1 PCT/JP2006/314699 JP2006314699W WO2007013474A1 WO 2007013474 A1 WO2007013474 A1 WO 2007013474A1 JP 2006314699 W JP2006314699 W JP 2006314699W WO 2007013474 A1 WO2007013474 A1 WO 2007013474A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- container
- fuel cell
- pressure
- liquid fuel
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 297
- 239000007788 liquid Substances 0.000 claims abstract description 103
- 238000005192 partition Methods 0.000 claims abstract description 92
- 238000003860 storage Methods 0.000 claims abstract description 35
- 238000001125 extrusion Methods 0.000 claims abstract description 18
- 239000011247 coating layer Substances 0.000 claims description 64
- 239000007789 gas Substances 0.000 claims description 51
- 229920001971 elastomer Polymers 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 230000004308 accommodation Effects 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 45
- 230000001105 regulatory effect Effects 0.000 description 32
- 230000007246 mechanism Effects 0.000 description 29
- 239000004810 polytetrafluoroethylene Substances 0.000 description 16
- 230000002265 prevention Effects 0.000 description 16
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 15
- 239000000463 material Substances 0.000 description 14
- 238000012360 testing method Methods 0.000 description 11
- 238000004064 recycling Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 8
- 229920000052 poly(p-xylylene) Polymers 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229920002943 EPDM rubber Polymers 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000037303 wrinkles Effects 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
- H01M8/04208—Cartridges, cryogenic media or cryogenic reservoirs
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
-
- 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
- H01M8/04186—Arrangements for control of reactant parameters, e.g. pressure or concentration of liquid-charged or electrolyte-charged 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
- H01M8/10—Fuel cells with solid electrolytes
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1009—Fuel cells with solid electrolytes with one of the reactants being liquid, solid or liquid-charged
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1009—Fuel cells with solid electrolytes with one of the reactants being liquid, solid or liquid-charged
- H01M8/1011—Direct alcohol fuel cells [DAFC], e.g. direct methanol fuel cells [DMFC]
-
- 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 fuel cell for storing liquid fuel supplied to a fuel cell such as a direct methanol fuel cell (hereinafter referred to as DMFC (Direct Methanol Fuel Cell)) and supplying the fuel to the fuel cell.
- DMFC Direct Methanol Fuel Cell
- the present invention relates to a fuel container, and particularly relates to a partition member that separates liquid fuel and extrusion means for extruding liquid fuel.
- a small portable terminal is not equipped with a fuel supply pump, a remaining fuel amount detection mechanism, etc., because of its size constraints and improved power generation efficiency.
- the fuel container be reusable rather than disposable.
- a coating layer is formed on the peripheral surface of the partition member by, for example, PTFE resin (Poly-Tetra Fluoro Ethylene) so that the piston-shaped partition member moves reliably. Increase slidability.
- PTFE resin Poly-Tetra Fluoro Ethylene
- Patent Documents 1 to 3 disclose techniques for coating a polyparaxylene-based resin on a container of a drug container and a partition member.
- Patent Document 1 Japanese Patent Publication No. 3-58742
- Patent Document 2 JP 2002-177364 A
- Patent Document 3 Japanese Patent Laid-Open No. 2002-291888
- the coating layer formed as described above is generally formed by spraying on the peripheral surface of the partition member, smearing occurs, and the partition member is repeatedly used. As a result, wrinkles are also generated in the smearing force, and the coating layer may be peeled off.
- the covering layer is peeled as a whole, the slidability of the partition wall member is lowered and the operation becomes impossible, and when the coating layer is partially peeled off, tilting and shakiness are generated when the partition wall member is operated.
- the coating layer In general, if the coating layer is thick, the characteristics of the material of the partition member cannot be utilized. Conversely, if it is too thin, defects such as peeling due to friction may occur as the number of uses increases. However, it is difficult to reduce the thickness of the coating layer formed as described above to about 2 O / zm.
- the partition member is poorly slidable and high pressure is required to reliably operate the partition member, the minimum internal pressure (extrusion means)
- the pressure in the accommodating chamber when the volume of the pushing-out means accommodating chamber that accommodates the maximum is increased, and when the minimum internal pressure is increased, the maximum internal pressure (the volume of the pushing means accommodating chamber is minimized). Therefore, the volume of the push-out means accommodation chamber must be increased in order to reduce the internal pressure difference as much as possible.
- the present invention has been made in view of the strong situation, and by ensuring reliable sliding performance, sufficient durability and sealing performance of the partition wall member, the defect rate is reduced and repeated. Increase the number of uses and the volume ratio of fuel! It is an object to provide a fuel container for a fuel cell.
- a fuel container for a fuel cell has a connection port for connection to a fuel cell or a pressure regulator, and the liquid fuel supplied to the fuel cell and the liquid fuel for extruding the liquid fuel are contained therein.
- a partition member that is slidably disposed inside the container body, and divides the inside of the container body into a fuel storage chamber for storing the liquid fuel and an extrusion means accommodation chamber for accommodating the extrusion means;
- a fuel container for a fuel cell comprising a valve provided at the connection port for opening or shutting off the flow of the liquid fuel
- the frictional force generated on the surface where the container body and the partition member are in sliding contact is ION or less.
- the fuel container for a fuel cell of the present invention may further include a cylindrical inner container that is disposed inside the container body and communicates with the connection port.
- At least one of the surfaces where the partition member and the fuel storage chamber are in sliding contact with each other has a non-eluting coating layer applied to the liquid fuel, You can do it.
- the coating layer is preferably a polyparaxylene-based resin.
- the coating layer preferably has a thickness of 0.2 to 3 ⁇ m.
- the polyparaxylene-based resin has the following formula:
- parylene N represented by (1).
- the partition member may be made of self-lubricating rubber.
- the extrusion means may be a compressed gas
- the extrusion means accommodation chamber may be a compressed gas chamber in which the compressed gas is enclosed.
- the partition member can smoothly slide because the frictional force of the surface where the container body and the partition member are in sliding contact with each other is ION or less. wear.
- the partition member can move even at a low pressure. Therefore, when the liquid fuel filled in the fuel storage chamber is reduced, the fuel is removed.
- the pressure required for extrusion that is, the internal pressure of the accommodating chamber when the volume of the extruding means accommodating chamber becomes maximum can be set small.
- the internal pressure can be set low, the internal pressure of the extrusion means storage chamber when the liquid fuel filled in the fuel storage chamber is in the maximum state, that is, when the volume of the fuel storage chamber is maximum and the volume of the extrusion means storage chamber is minimum. Therefore, the volume value when the volume of the push-out means accommodation chamber is minimum can be reduced, and the volume ratio of the liquid storage chamber to the fuel container body can be increased. Also, if the pressure is not high, the fuel container body does not need to be thickened to improve the strength, so the volume of the fuel container body does not decrease, so the volume of the fuel storage chamber does not decrease. Therefore, it becomes possible to accommodate more liquid fuel.
- At least one of the surfaces where the container body and the partition member are in sliding contact with each other is provided with a coating layer that is non-eluting with respect to the liquid fuel, and the coating layer is a polyparaxylene-based resin. Since the coating layer can be formed without smearing, the possibility that the coating layer peels can be reduced. Therefore, since the partition member operates reliably without causing tilting or rattling, the slidability of the partition member is improved, and the durability and adhesion of the partition member are ensured. Can reduce the defect rate. Furthermore, the number of repeated uses can be increased by reducing the defect rate.
- the coating layer has a thickness of 0.2 to 3 ⁇ m, the coating layer is thin, so that the characteristics of the material of the partition wall member can be utilized, and the occurrence of liquid fuel leakage or the like can be avoided. Can be prevented.
- FIG. 1 is a perspective view of a fuel container for a fuel cell according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view taken along the line ⁇ ⁇ ⁇ ⁇ in FIG.
- FIG. 3 is an enlarged cross-sectional view of a main part of the fuel container for fuel cell in FIG. 1 and the pressure regulating device of one embodiment connected to the fuel container for fuel cell.
- FIG. 4 is an exploded perspective view of a pressure regulating mechanism in the pressure regulating device of FIG. 3.
- FIG. 5 is a graph showing the relationship between the number of times of recycling and sliding friction force in Example 1.
- FIG. 6 is a graph showing the relationship between the number of recyclings and sliding frictional force in Comparative Example 1.
- FIG. 7 is a graph showing the relationship between the standing time and the sliding frictional force in Example 2.
- FIG. 8 is a graph showing the relationship between the standing time and sliding friction force in Comparative Example 2.
- the fuel container for a fuel cell according to the present embodiment accommodates liquid fuel and is attached to a small portable terminal such as a notebook personal computer or a PDA (Personal Data Assistant) via a pressure regulating device. It is a fuel container that supplies liquid fuel to the built-in DMFC.
- FIG. 1 is a perspective view of a fuel container for a fuel cell in the present embodiment
- FIG. 2 is a sectional view taken along II II in FIG. 1
- FIG. 3 is a connection between a pressure regulator described later and the fuel container for fuel cell in FIG. FIG.
- a connection port for connecting to the pressure regulator The side with is the upper side (above the paper).
- a fuel container 1 for a fuel cell as shown in Figs. 1 and 2 contains therein a liquid fuel F and a compressed gas G that is an extrusion means for extruding the liquid fuel F.
- a container body 2 having a connection port 23a for connection to the device 5, a partition member 3 which is slidably disposed inside the container body 2 and separates the liquid fuel F and the compressed gas G, and a connection port 23a.
- a valve 4 that opens or shuts off the flow of the liquid fuel F accommodated in the container body 2.
- the liquid fuel F is supplied to the DMFC, it is, for example, a mixed solution of alcohol and pure water having a predetermined concentration such as ethanol and pure water, methanol and pure water, or the like. .
- the convenience can be changed according to the type of fuel cell, which is not limited to this.
- the compressed gas G can prevent the oxygen that adversely affects the reaction in the fuel cell from being mixed into the liquid fuel F.
- a gas that does not contain oxygen such as nitrogen, carbon dioxide, deoxygenated air, and the like.
- the container body 2 includes a substantially cylindrical outer container 21 having both ends opened as shown in Figs. 1 and 2, and a lid 22 that is detachably attached to the lower end of the outer container 21 and seals the bottom.
- a supply connector 23 which is attached to the upper end of the outer container 21 and has the connection port 23a in the approximate center of the upper end, which is connected to a pressure regulator 5 (shown in FIG. 3) to be described later, 21 is composed of an inner container 24 arranged in a double structure inside.
- a fuel storage chamber 11 for storing the liquid fuel F formed inside the inner container 24 as shown in Fig. 2, and mainly the outer surface of the inner container 24 and the inner surface of the outer container 21.
- a piston-like partition member 3 that partitions the gas chamber 12 and an elastic body 25 that is compressed between the bottom of the container body 2 when the partition member 3 moves downward are provided.
- the volume ratio of the fuel storage chamber 11 and the compression gas chamber 12 varies depending on the position of the partition member 3, and when the liquid fuel F is consumed and the partition member 3 rises, a part of the compressed gas chamber 12 is Inside the inner container 24 Will be located.
- the inner container 24 has a substantially cylindrical shape with the lower end opened, and the lower end is disposed without contacting the lid body 22.
- a plurality of cutouts 241 extending in the vertical direction are formed on the peripheral surface on the lower end side, and when the partition wall member 3 moves down due to compression of the elastic body 25, the inner part of the inner container 24 and the outer container 21 Internal communication is possible. (It will be described in detail later.)
- a through hole 242 communicating with a valve 4 to be described later is opened at the upper end of the inner container 24 substantially at the center, and the liquid fuel F in the fuel storage chamber 11 is supplied via the nozzle 4. You can do it.
- a cylindrical portion 243 protrudes outwardly from the outer periphery of the through hole 242, and a nut 244 is provided inside the cylindrical portion 243.
- the supply connector 23 has an insertion port 231 through which a later-described valve 4 is inserted in the approximate center of the lower end, and a connecting tube portion 232 projects upward on the outer periphery of the through-hole 231.
- a connection port 23 a for connecting to the pressure adjusting device 58 is provided at the upper end of the connection tube portion 232.
- a protrusion capable of locking the connection with the pressure adjusting device 5 described later is projected outward. The connection between the supply connector 23 and the pressure regulator 5 will be described later.
- the valve 4 corresponds to the connection between the pressure regulator 5 and the housing 41 as a fixing member to the supply connector 23 as shown in an enlarged view in FIG. It is used as a sealing member when connecting the pressure regulator 5 to the stem 42 that moves, the spring 43 that biases the stem 42 in the closing direction, the valve element 44 (O-ring) that opens or shuts off the flow of the liquid fuel F, and the pressure regulator 5. And a connection seal member 45 that acts in the manner described above, which are preferably formed of a non-metallic material.
- the sawing 41 is formed in a substantially cylindrical shape, and an annular step 41a projecting outward at an intermediate portion, and a mounting cylinder 41b extended downward by a downward force on the lower surface of the annular step 41a. And an annular protrusion 41c protruding inward at the intermediate portion.
- the housing 41 is passed through the passage opening 231 of the supply connector 23 described above, and is arranged so that the lower surface of the annular step portion 41a is in contact with the upper edge of the passage opening 231, and the lower end of the mounting tube portion 41b is the inner container. It communicates with 24 through holes 242 and is attached to the container body 2 by fastening the outer periphery with the nut 244 described above.
- connection seal member 45 is fitted on the outer periphery of the upper end of the housing 41.
- the stem 42 is formed in a rod shape, and includes a large-diameter portion 42a spreading outward at the upper end and a shaft portion 42b extending below the large-diameter portion 42a.
- the large-diameter portion 42a includes a concave portion 42c that can contact the tip of a linkage projection 644 of an introduction member 64 of the pressure adjusting device 5 to be described later, at the approximate center of the upper surface.
- the stem 42 is inserted into the housing 41 so as to be movable in the axial direction, and a spring 43 is disposed between the lower surface of the large-diameter portion 42a and the upper surface of the annular protrusion 41c, and is biased upward.
- the tip of the stem 42b of the stem 42 protrudes through the inner hole of the annular protrusion 41c, and the valve element 44 by the O-ring attached to the outer periphery of the tip of the stem 42b is pressed against the lower end of the annular protrusion 41c. Therefore, the inner hole is closed to block the flow of the liquid fuel F.
- the valve body 44 is made of an inertia material using an O-ring, and this elastic material is regulated by a circumferential groove of the shaft portion 42b so as not to swell and deform in the valve opening / closing direction (axial direction). Therefore, even if the valve element 44 (elastic material) in contact with the liquid fuel F expands due to swelling, the volume change is restricted in the direction perpendicular to the valve opening / closing movement direction. And do not affect changes in fuel flow.
- the partition member 3 includes a main body member 31 having a substantially cylindrical shape and having a groove 31a on the outer peripheral surface, and an elastic seal member 32 (O
- the elastic seal member 32 is arranged so that its outer periphery is in airtight contact with the inner surface of the inner container 24 and can slide up and down in the inner container 24.
- the partition member 3 functions as a moving partition that partitions the space in contact with the upper surface into the fuel storage chamber 11 and the space in contact with the bottom surface into the compressed gas chamber 12, and the liquid fuel on the upper surface is driven by the pressure of the compressed gas G acting on the bottom surface.
- a feature of the present invention is that a coating layer that is non-eluting with respect to the liquid fuel F is applied to at least one of the surfaces in which the container body 2 and the partition wall member 3 are in sliding contact. is there.
- a non-eluting coating layer is applied to the outer surface of the elastic seal member 32.
- Examples of the material for forming the coating layer include polyparaxylene-based resin, and parylene N is particularly preferable.
- Norylene N coating layer is formed, for example, by chemical vapor deposition (CVD), and can be coated at the molecular level, which is impossible with conventional liquid coating or powder coating. It is possible to control evenly, and uniform processing without pinholes is possible. Therefore, the coating layer can be formed without smearing, and the possibility that the coating layer peels off can be reduced. Accordingly, the partition wall member 3 operates reliably without tilting or rattling, so that the slidability of the elastic seal member 32 is improved, and the durability and adhesion of the elastic seal member 32 are ensured to be defective. The rate can be reduced. Furthermore, the number of repeated use can be increased by reducing the defect rate.
- the coating layer thickness is less than 0.2 ⁇ m, sufficient film strength cannot be obtained, and if it exceeds 3 ⁇ m, the elastic force is lost and the seal surface cannot follow the fine irregularities of the seal surface.
- the advantage of the physical properties of the elastic body, such as the occurrence of defects, is lost. Therefore, in order to make full use of the characteristics of the partition member 3, that is, the elastic seal member 32, it is preferably 0.2 to 3 m. With such a coating layer, the elastic seal member 32 can maintain airtightness with the container body due to elasticity, and can prevent the liquid fuel F from leaking.
- the sliding frictional force generated on the surface where the container body 2 and the partition member 3, that is, the inner container 24 and the elastic seal member 32 slidably contact becomes ION or less.
- the sliding frictional force is equal to or less than ION.
- the inner container 24 is a molded product of PP
- the liquid fuel F is a mixture of pure water 70 wt% and methanol 30 wt%
- the elastic seal member 32 is EP DM size P-11
- the coating layer has a film thickness of 1 This was carried out using the one formed by ⁇ m-norylene repulsion.
- the partition member 3 can slide smoothly. Since it is possible to move even at a low pressure, when the liquid fuel F filled in the fuel storage chamber 11 becomes small, the pressure necessary to push out the fuel F, that is, the compression is required.
- the internal pressure of the gas chamber 12 when the volume of the gas chamber 12 becomes maximum can be set small. If the internal pressure can be set low, the compressed fuel chamber 12 when the liquid fuel F filled in the fuel storage chamber 11 is in the maximum state, that is, when the volume of the fuel storage chamber 11 is maximum and the volume of the compressed gas chamber 12 is minimum.
- the volume value when the volume of the compressed gas chamber 12 is minimum can be reduced, and the volume ratio of the liquid storage chamber 11 with respect to the container body 2 can be increased. . Further, if the pressure is not high, it is not necessary to increase the thickness of the container body 2, and therefore the volume of the container body 2 does not decrease, so the volume of the fuel storage chamber 11 does not decrease. Therefore, it becomes possible to accommodate more liquid fuel F.
- the smooth sliding of the partition wall member 3 makes it possible to supply the liquid fuel F smoothly, for example, in an initial state where there is no liquid fuel F inside the DMFC. .
- the outer surface of the elastic seal member 32 is provided with a coating layer.
- the present invention is not limited to this, and the surface on which the container body 2 and the partition wall member 3 are in sliding contact with each other.
- the sliding friction force generated in the wall is ION or less, the bulkhead member 3 is self? It can be made of slidable rubber.
- a non-eluting coating layer (for example, a parylene N coating layer) is applied to the outer surface of the elastic seal member 32.
- the fuel cell It is preferable to apply the coating layer to all the members in contact with the liquid fuel F in the fuel container 1.
- the coating layer is applied to a rubber member, for example, the valve body 44 attached to the tip of the stem 42.
- EPDM rubber member material
- the fuel container 1 for fuel cells has a double container structure.
- a single container structure may be used.
- Compressed gas G should be sealed before injecting fluid F into fuel storage chamber 12.
- the gas inlet of the fuel filling device is coupled to the connection port 23 a, the stem 42 is opened by pushing operation, and the compressed gas G is injected into the fuel storage chamber 11 through the valve 4.
- the partition wall member 3 descends and, as shown in FIG. 2, the partition wall member 3 presses and deforms the elastic body 25 by injecting the compressed gas G from the position where the elastic body 25 has a natural length. Then move further toward the bottom of the container body 2 by directing force.
- the upper end of the notch 241 is located above the elastic seal member 32 of the partition member 3, and the compressed gas G is injected from the fuel storage chamber 11 into the compressed gas chamber 12 through the notch 241. Is done.
- the injection of the compressed gas G is stopped.
- the stem 42 is opened again to discharge the compressed gas G in the fuel storage chamber 11.
- the partition member 3 rises due to the repulsive force of the elastic body 25 and returns to the state in which the fuel storage chamber 11 is sealed as shown in FIG.
- the partition member 3 moves up to the upper end of the inner container 24 with the pressure of the compressed gas G in the compressed gas chamber 12 acting on the lower surface, and the compressed gas G in the fuel storage chamber 11 is moved.
- the compressed gas G is sealed in the compressed gas chamber 12 by discharging all of the gas.
- the pressure of the compressed gas G is not particularly limited as long as the pressure can discharge all the liquid fuel F filled in the fuel storage chamber 11 while being pushed out by the partition member 3 as described later. For the reasons described above, a lower pressure is preferable, and a pressure of lOOkPa or less is preferable.
- the injection means is connected to the supply connector 23, and the partition member 3 is lowered by injecting the liquid fuel F into the fuel storage chamber 11 via the valve 4, and a predetermined amount of liquid is supplied to the fuel storage chamber 11.
- the fuel container 1 for the fuel cell can be configured.
- the pressure regulating device 5 has a liquid fuel supplied from the fuel cell fuel container 1 by connecting one end to the fuel cell fuel container 1 described above and the other end to the DMFC (not shown). A device that adjusts F to a predetermined pressure and supplies it to the DMFC, and supplies the DMFC with the pressure (primary pressure) of the liquid fuel F supplied from the fuel cell fuel container 1 as shown in FIG.
- Pressure adjusting mechanism 6 having a pressure adjusting mechanism (governor mechanism) that adjusts to the pressure of fuel F (secondary pressure), and supply connection of fuel container 1 for the fuel cell described above, engaged with pressure adjusting mechanism 6 It is generally composed of a connector 7 provided with a securing mechanism (ratchet mechanism) for connecting the device 23 in a locked state.
- FIG. 4 shows an exploded perspective view of the pressure regulating mechanism 6.
- the pressure regulating mechanism section 6 is disposed so as to face each other, and is connected to the cover case 61 and the main body case 63 containing the diaphragm 62 therein, and the main body case 63.
- An introduction member 64 into which liquid fuel F at the primary pressure is introduced from the container 1 an adjustment valve 65 that adjusts the primary pressure to a secondary pressure in conjunction with the diaphragm 62, and a liquid fuel that prevents leakage of liquid fuel.
- the cover case 61 and the main body case 63 are arranged above and below via the diaphragm 62, and are engaged by, for example, screws or the like. Spaces are formed between the cover case 61 and the diaphragm 62 and between the main body case 63 and the diaphragm 62, and the space on the cover case 61 side is formed by an inner wall 61a projecting downward from the inner surface of the cover case 61. It is divided into an atmospheric chamber 610 that communicates with the atmosphere and a fuel chamber 611 into which liquid fuel F at the secondary pressure is introduced, and the space on the main body case 63 side accommodates the liquid fuel F adjusted to the secondary pressure.
- the pressure regulation chamber is 630. The pressure adjusting mechanism will be described later in detail.
- the cover case 61 has a cylindrical portion 612 projecting upwardly on the upper surface, and a cylindrical discharge portion 613 projecting outwardly on the outer side wall forming the fuel chamber 611. It is installed.
- a pipe 614 is detachably connected to the tip of the discharge part 613 to guide the liquid fuel F having a secondary pressure from the fuel chamber 611 to the DMFC (not shown).
- a pressure adjusting screw 615 is screwed to the upper end so that the position can be adjusted, one end abuts on the pressure adjusting screw, and the other end abuts on a supporter 621 described later.
- a pressure adjusting spring 616 for setting pressure is arranged substantially parallel to the axial direction. Adjusting screw 615 is approximately in the center There is an atmospheric communication hole 615a penetrating and opening in the vertical direction (axial direction), and the atmospheric chamber 610 is opened to the atmosphere by the atmospheric communication hole 615a.
- the pressure adjusting spring 616 expands and contracts, and the biasing force to the diaphragm 62 is adjusted via the supporter 621 to set a predetermined secondary pressure. It is possible.
- the diaphragm 62 is elastic and has a substantially flat shape having a large-diameter portion and a small-diameter portion, and a supporter through-hole through which a later-described supporter 621 passes in the center of the large-diameter portion.
- a cylindrical member through hole 62b through which a cylindrical member 632 (described later) is inserted is provided at the center of the small-diameter portion, and the outer periphery of the supporter through hole 62a is deformed and protruded upward by force.
- a protruding portion 62c is provided.
- a diaphragm 62 is fixed to the upper side (atmosphere chamber 610 side) with a supporter 621, which will be described later, and a shaft 622 (described later) to the lower side (pressure regulating chamber 630 side), and the diaphragm 62 is integrally moved up and down according to the elastic displacement of the diaphragm 62. It is possible to move in the direction (axial direction).
- the supporter 621 has a substantially flat circular shape with a lower surface fixed to the upper surface of the diaphragm 62 and an upper surface in contact with the other end of the pressure regulating spring 616.
- a shaft 621a that can be inserted into the inner hole of the pressure adjusting spring 616 protrudes upward in the center of the upper surface, and passes through the supporter through hole 61a downward in the center of the lower surface.
- a bolt shaft portion 621b that is fastened to the shaft 622 protrudes.
- a through hole 621c that is open and opened in the vertical direction (axial direction) is provided at the approximate center, and the upper end communicates with the atmospheric chamber 610.
- the shaft 622 includes a substantially cylindrical large-diameter boss portion 622a whose upper surface is fixed to the lower surface of the diaphragm 62, a substantially cylindrical small-diameter boss portion 622b formed at the center of the lower end of the large-diameter boss portion 622a, And a boss shaft portion 622c extending downward from the center of the lower end of the small-diameter boss portion 622b.
- the lower end of the boss shaft portion 622c is provided with a circumferential groove portion 622d to which the adjusting valve 65 is mounted, and a first backflow prevention valve 66 is mounted on the upper end periphery.
- a fastening hole 622e for fastening the bolt shaft portion 621b is provided on the upper surface of the shaft 622 up to a predetermined position of the small diameter boss portion 622b.
- the diaphragm 62 receives the secondary pressure of the liquid fuel F stored in the pressure adjusting chamber 630 on the lower surface and the atmospheric pressure of the gas stored in the atmospheric chamber 610 on the upper surface, respectively. Elastic displacement can be made up and down according to the pressure difference between the secondary pressure and the atmospheric pressure. The urging force generated by the pressure difference and the urging force generated by the pressure adjusting spring 616 are kept in a balanced position.
- the main body case 63 is substantially box-shaped with the upper end open, and has an opening 63a through which the small-diameter boss 622b is inserted.
- a large shaft cylinder portion 63b whose upper end communicates with the opening portion 63a is provided on the outer periphery of the opening portion 63a so as to protrude downward, and on the lower surface of the large shaft cylinder portion 63b, a shaft cylinder having a lower end opened.
- the part 63c protrudes downward.
- a groove is formed on the outer periphery of the upper end of the shaft cylinder portion 63c, and an O-ring 631 for introducing an introduction member 64 described later is attached to the groove.
- a partition wall 63d protrudes inward from the inner hole surface at the boundary between the large shaft cylinder portion 63b and the shaft cylinder portion 63c, and the boss shaft portion 622c is slidably inserted therethrough. It is like that.
- the boss shaft portion 622c moves in the vertical direction (axial direction) in response to the displacement of the diaphragm 62, the upper surface of the cutting wall 63d is the first backflow prevention valve 66, and the lower surface is the adjustment valve 65.
- the flow of the liquid fuel F is opened or closed by abutting or separating from each other. (I will explain in detail later.)
- a cylindrical member accommodation chamber 632 is provided at a position communicating with the cylindrical member insertion hole 61b of the diaphragm 62, and the cylindrical member 633 is accommodated in the cylindrical member accommodation chamber 632.
- the cylindrical member 633 is open at both ends, the lower end is disposed so as not to contact the inner surface of the cylindrical member storage chamber 632, and the upper end is disposed so as to be positioned in the fuel chamber 611, and is adjusted to a secondary pressure. F is introduced into the fuel chamber 611.
- the introduction member 64 is a member whose upper surface is joined to the lower surface of the large-shaft cylinder portion 63b of the main body case 63, and has a main body cylinder portion 641 having a groove into which the introduction O-ring 631 is fitted at the upper end.
- the upper end force of the main body cylindrical portion 641 is also projected on the partition wall 642 provided on the inner surface of the predetermined position and the substantially lower surface at the center of the partition wall portion 642 downward, and the stem 42 of the fuel container 1 for the fuel cell 1 described above
- an associating projection 643 capable of coming into contact with the recess 42c, and a through-hole 644 that penetrates the partition walls 642 on both sides of the assembling projection 643.
- connection protrusion 643 When the connection protrusion 643 is connected to the fuel cell fuel container 1 described above, the tip of the connection protrusion 643 comes into contact with the recess 42c and pushes the stem 42 downward, thereby opening the stem 42. It is.
- This linkage protrusion 643 is fixed to the partition wall 642 and interlocks with the diaphragm 62.
- the boss shaft portion 622c is separated from the boss shaft portion 622c so that the diaphragm 62 is not subjected to force by the pushing operation. That is, when the linkage protrusion 643 holds the stem 42 in the state where the stem 42 is pushed down as much as possible (maximum push-in state), the spring 43 is held in a contracted state. The power of is energized. In order to prevent the diaphragm 62 from being displaced by this urging force and impairing the pressure regulation function, the boss shaft portion 622c interlocked with the diaphragm 62 is separated from the structure.
- a second backflow prevention valve 67 for high-pressure closing formed by an elastic plate such as a rubber plate or a sand switch plate is arranged to allow the opening of the through hole 644 to be closed. It is installed.
- the second backflow prevention valve 67 is used when the supply of the liquid fuel F from the fuel cell fuel container 1 is stopped while the secondary pressure in the pressure regulating chamber 630 is high to some extent (the fuel cell fuel container 1 is adjusted). When it is separated from the pressure device 5), it functions as a backflow prevention valve that prevents the backflow of the liquid fuel F by closing the through-hole 644 by the secondary pressure, and the liquid fuel F leaks outside. To prevent. At this time, if the secondary pressure is low, the second backflow prevention valve 67 has elasticity, so that when the through hole 644 is closed, the closing force is insufficient, and the liquid fuel F May leak out. Therefore, when the secondary pressure is low, the first backflow prevention valve 66 described above abuts against the upper surface of the partition wall 63d by the secondary pressure to prevent the backflow of the liquid fuel F.
- a filter 68 for removing foreign matters such as dust in the primary pressure liquid fuel F supplied from the fuel cell fuel container 1 is interposed on the lower surface of the partition wall 642.
- the filter 68 has a disk shape having an inner hole 68a in the approximate center, and has an outer diameter that is slightly larger than the outer diameter of the partition wall 642, that is, the inner diameter of the main body cylinder 641. By forming it slightly smaller than the outer diameter of the portion, it does not fall when inserted into the introduction member 64 from below.
- the material of the filter 68 is, for example, LDPE (low density polyethylene) foam having a porosity of 85%, an average cell diameter of 30 ⁇ m, and a thickness of lm m.
- Foam materials are polyethylene, polypropylene, polyoxymethylene, polyethylene terephthalate, polyethylene naphthalate. Or at least one selected from the group consisting of polyacrylonitrile forces.
- the coating layer is applied to all members in contact with the liquid fuel F inside the pressure adjusting mechanism portion. It is particularly preferable to apply the coating layer to the rubber member. This prevents liquid fuel F from coming into direct contact with the surface of the rubber part, so it uses materials that are cheaper than the rubber member material (EPDM) that has been used in general, such as NBR and IR. It is possible to reduce the cost.
- EPDM rubber member material
- the connector 7 has a substantially cylindrical shape, one end is fixed to the pressure adjusting mechanism 6, and the other end is detachably attached to the supply connector 23 of the fuel container 1 for the fuel cell described above. Then, the linkage protrusion 643 is engaged with the protrusion provided on the outer peripheral surface of the supply connector 23 at a position where the stem 42 is held in the maximum pushed-in state, and the supply connector 23 is connected by the ratchet mechanism. That is, the fuel cell fuel container 1 is connected and locked.
- the fuel cell fuel container 1 has a mechanism that releases the above-described pushing state and can be easily separated from the pressure regulating mechanism section 6.
- the connector 7 of the present embodiment is connected and locked by the ratchet mechanism
- the present invention is not limited to this, and the fuel container 1 for the fuel cell holds the pushed state. Can be used as long as the structure can be easily separated from the pressure adjustment mechanism 6.
- the connector 7 has the same structure as the connector described in Japanese Patent Application No. 2004-266463 filed earlier by the present applicant, and detailed description thereof is omitted in the present invention.
- the pressure adjusting device 5 is configured as described above. Next, the connection and operation of the fuel cell fuel container 1 and the pressure regulator 5 will be described in detail.
- the pressure regulator 5 is connected and locked to the fuel container 1 for the fuel cell. Configured as above
- the introduction member 64 at the lower end of the pressure regulating mechanism 6 is inserted into the connection port 23a at the upper end of the fuel cell fuel container 1 thus obtained.
- the outer surface of the connection seal member 45 is pressed against the inner surface of the introduction member 64, so that the sealing state between the valve 4 and the introduction member 64 is secured, and the linkage projection 644 contacts the recess 42c of the stem 42.
- the liquid fuel F having the primary pressure is supplied from the fuel cell fuel container 1 to the pressure regulating mechanism 6 as described above. In this state, the fuel container 1 for the fuel cell is fixed to the pressure regulating mechanism 6 by the connector 7.
- the pressure adjusting mechanism 6 is not applied with a downward force (from the primary pressure side) in a state where the fuel cell fuel container 1 is separated. Is a state in which the lower surface force of the cutting wall 63d is also separated, that is, an open operation state.
- the liquid fuel F at the primary pressure supplied from the fuel container 1 for the fuel cell passes through the filter 68 and passes through the through hole 644 after removing foreign matters such as dust in the liquid fuel F. . Then, the liquid fuel F rises by pushing up the second backflow prevention valve 67 by the upward primary pressure, and passes between the inner hole of the partition wall 63d opened by the adjustment valve 65 and the boss shaft portion 622c. It is accommodated in the pressure regulating chamber 630.
- a predetermined secondary pressure is set by adjusting the vertical position of the pressure adjusting screw 615 as described above.
- the pressure adjusting spring 616 is compressed accordingly, and a downward force is applied to the diaphragm 62.
- the adjusting valve 65 attached to the lower end of the boss shaft 622c of the shaft 622 is separated from the lower surface force of the partition wall 63d.
- the primary pressure side liquid fuel F flows into the pressure adjustment chamber 630 and the upward pressure (secondary pressure) is applied to the diaphragm 62.
- the diaphragm 62 When the secondary pressure increases and the upward force biased to the lower surface of the diaphragm 62 increases, the diaphragm 62 is displaced upward and compresses the pressure adjustment spring 616 via the supporter 621. The diaphragm 62 is maintained at an average position of the downward force (reaction force) generated by the spring 616 and the upward force biased to the lower surface of the diaphragm 62. In this way The desired secondary pressure is set.
- the first backflow prevention valve 66 performs an opening / closing operation opposite to the opening / closing operation of the adjustment valve 65 accompanying the vertical fluctuation of the shaft 622. That is, with the downward movement of the shaft 622, the regulating valve 65 opens (the partition wall 63d lower surface force is also released), whereas the first backflow prevention valve 66 closes (closes to the upper surface of the partition wall 63d). . Conversely, as the shaft 622 moves upward, the regulating valve 65 is closed (closer to the bottom surface of the partition wall 63d), whereas the first backflow prevention valve 66 is open (away from the top surface of the partition wall 63d). . As a result, the pressure regulating characteristics with respect to the primary pressure are reversed between the regulating valve 65 and the first backflow prevention valve 66.
- the regulating valve 65 and the first backflow prevention valve 66 have the opening / closing operation reversed with respect to the displacement of the diaphragm 62, thereby eliminating the pressure regulation fluctuation due to the mounting position error between them. We will make manufacturing easier by reducing manufacturing accuracy.
- the cylinder portion It is introduced into the fuel chamber 611 via the material 633, further supplied to the DMFC via the pipe 614 through the discharge part 613.
- the pressure regulating device 5 as described above is used.
- the present invention is not limited to this, and the liquid fuel F having a predetermined secondary pressure is not limited to this. Any one that can be supplied can be used.
- Patent Documents 1 to 3 are elution of each member, adsorption of the contents of the container, and sliding. The purpose is to improve mobility.
- the partition member is slid in a short time by a person or a machine, whereas the fuel container for a fuel cell of the present invention has a compression gas.
- the partition wall member is slid over several hours to several days by gas, liquid gas, panel force, or the like. Further, in the present invention, the partition member is repeatedly moved and stopped rather than constantly moving. Therefore, it is necessary that the slidability is always stable. For that purpose, the sliding frictional force must be low and stable in value.
- the fuel cell fuel container of the present invention is different in that it is repeatedly used by recycling.
- the purpose of improving the slidability is to reduce the defective rate as described above, and to increase the number of repeated use and the volume ratio of the fuel. It is not easy to think from the technology.
- the endurance test was repeated using the inner container 24, the partition member 3 (main body member 31, O-ring 32), and the valve 4 described in the above embodiment.
- the inner container 24 and the main body member 31 were molded products made of PP, and the O-rings were formed by forming a 1 ⁇ m parylene ⁇ coating layer on the outer surface of the EPDM molded product.
- the O-ring is the same as that of the above Example except that the outer surface of the EPDM molded product is a PTFE coating layer with a film thickness of 20 m. Repeated durability tests were conducted. The result is shown in FIG.
- FIG. 5 is a graph showing the relationship between the number of times of recycling and the sliding frictional force when a parylene N coating layer is applied to the outer surface of the O-ring. According to this, the sliding frictional force was kept below 5N when the number of recycling was less than 10. The sliding frictional force after 10 times of recycling was stable at around 5N.
- FIG. 6 is a graph showing the relationship between the number of times of recycling and the sliding friction force when a PTFE coating layer is applied to the outer surface of the O-ring. According to this, when the number of recycling is less than 20 times, the sliding friction force is stable at around 12N. After 20 times, the sliding friction force increases as the number of recycling increases. .
- the value of the sliding friction force has increased after the 20th recycling, and this is thought to be because at least a part of the PTFE coating layer was peeled off.
- O-ring When the parylene N coating layer is applied to the outer surface, the sliding frictional force is stable at ION or less even if the number of recycles is increased, and it is considered that the norene N coating layer is not peeled off. Therefore, by applying a N-N coating layer on the outer surface of the O-ring, the sliding friction force generated on the surface where the inner container and the O-ring slide in contact with each other even when the number of recycles is increased is stabilized at ION or less, and the partition wall The member was able to slide smoothly.
- Example 2 Using the same apparatus as in Example 1, the deterioration test with time was conducted.
- the test method is the same as in Example 1 (1) to (2). After that, the device is left in an environment of 65 ° C and the operation of (3) is performed after a predetermined time. It was.
- the O-ring is the same as that of Example 2 except that an EPDM molded product having a PTFE coating layer with a film thickness of 20 m formed on the outer surface is used.
- the same aging test was conducted. The results are shown in FIG.
- Fig. 7 is a graph showing the relationship between the standing time and the sliding frictional force when the parylene N coating layer is applied to the outer surface of the O-ring. According to this, the sliding frictional force was stable in the vicinity of 2.5 to 3N even after the standing time.
- Fig. 8 is a graph showing the relationship between the standing time and the sliding friction force when a PTFE coating layer is applied to the outer surface of the O-ring. According to this, the sliding friction force increased slightly in the vicinity of 15N until the standing time was 50h. 501 neglect time! In the vicinity of ⁇ 165h, the sliding friction force gradually increased when the standing time exceeded 165h, and the sliding friction force did not drop below the force ION reduced by about 5N. [0114] As is apparent from Figs. 7 and 8, when the PTFE coating layer is applied to the outer surface of the O-ring, the sliding frictional force related to the standing time is always greater than ION and is not stable. I got it.
- the PTFE coating layer itself swells, or the 30% by weight aqueous methanol solution permeates the PTFE coating layer, or the PTFE coating layer peels off, and the O-ring (rubber member) and the 30 weight by weight in the peeled portion. There is a possibility that the O-ring itself may swell due to contact with the aqueous methanol solution.
- Example 2 Using the same device as in Example 1, the O-ring seal failure test was performed. The test method is the same as in Example 1 above 1-2, and then the filled 30 wt% methanol aqueous solution is allowed to flow out from the container for 30 minutes through valve 4 at an outflow amount of 6mLZ60-120min. It was. After that, the number of containers mixed with gas due to o-ring seal failure was counted.
- the O-ring is the same as in Example 3 except that an EPDM molded product having a PTFE coating layer with a film thickness of 20 m formed on the outer surface is used. O-ring seal failure test was conducted.
- Table 1 shows the results of Example 3 and Comparative Example 3.
- This value is a commonly used% 2 distribution table with 1 degree of freedom and a significance level of 0.01.
- the risk factor is 1%, and it can be said that there is a difference in the probability of occurrence of defective products between the O-ring with the N-Nylene coating layer and the O-ring with the PTFE coating layer.
- the O-ring with the N-N coating layer had a lower defect rate, that is, the defective rate than the O-ring with the PTFE coating layer.
Landscapes
- Engineering & Computer Science (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)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112006001956T DE112006001956T5 (de) | 2005-07-25 | 2006-07-25 | Brennstoffbehälter für Brennstoffzellen |
US11/996,957 US20110123905A1 (en) | 2005-07-25 | 2006-07-25 | Fuel container for fuel cell |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005213652A JP4947930B2 (ja) | 2005-07-25 | 2005-07-25 | 燃料電池用燃料容器 |
JP2005-213652 | 2005-07-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007013474A1 true WO2007013474A1 (ja) | 2007-02-01 |
Family
ID=37683367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/314699 WO2007013474A1 (ja) | 2005-07-25 | 2006-07-25 | 燃料電池用燃料容器 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110123905A1 (ja) |
JP (1) | JP4947930B2 (ja) |
KR (1) | KR20080028990A (ja) |
CN (1) | CN100590917C (ja) |
DE (1) | DE112006001956T5 (ja) |
WO (1) | WO2007013474A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4880318B2 (ja) * | 2006-02-10 | 2012-02-22 | 株式会社東海 | 燃料カートリッジ |
IT201600082419A1 (it) * | 2016-08-04 | 2018-02-04 | De Longhi Appliances Srl | Gruppo di infusione per macchina da caffè |
KR101900419B1 (ko) * | 2018-02-22 | 2018-09-20 | (주)연우 | 이중 용기 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004281341A (ja) * | 2003-03-19 | 2004-10-07 | Casio Comput Co Ltd | 燃料容器 |
JP2005032598A (ja) * | 2003-07-07 | 2005-02-03 | Sony Corp | 燃料タンク及びこれを用いた燃料電池システム |
JP2005038803A (ja) * | 2003-07-03 | 2005-02-10 | Tokai Corp | 燃料電池用燃料容器 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7474180B2 (en) * | 2002-11-01 | 2009-01-06 | Georgia Tech Research Corp. | Single substrate electromagnetic actuator |
CN1998105A (zh) * | 2004-07-08 | 2007-07-11 | 直接甲醇燃料电池公司 | 燃料电池盒和燃料输送系统 |
-
2005
- 2005-07-25 JP JP2005213652A patent/JP4947930B2/ja not_active Expired - Fee Related
-
2006
- 2006-07-25 US US11/996,957 patent/US20110123905A1/en not_active Abandoned
- 2006-07-25 CN CN200680024604A patent/CN100590917C/zh not_active Expired - Fee Related
- 2006-07-25 DE DE112006001956T patent/DE112006001956T5/de not_active Ceased
- 2006-07-25 KR KR1020087002815A patent/KR20080028990A/ko not_active Application Discontinuation
- 2006-07-25 WO PCT/JP2006/314699 patent/WO2007013474A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004281341A (ja) * | 2003-03-19 | 2004-10-07 | Casio Comput Co Ltd | 燃料容器 |
JP2005038803A (ja) * | 2003-07-03 | 2005-02-10 | Tokai Corp | 燃料電池用燃料容器 |
JP2005032598A (ja) * | 2003-07-07 | 2005-02-03 | Sony Corp | 燃料タンク及びこれを用いた燃料電池システム |
Also Published As
Publication number | Publication date |
---|---|
CN101218703A (zh) | 2008-07-09 |
CN100590917C (zh) | 2010-02-17 |
KR20080028990A (ko) | 2008-04-02 |
DE112006001956T5 (de) | 2008-05-21 |
JP2007035338A (ja) | 2007-02-08 |
US20110123905A1 (en) | 2011-05-26 |
JP4947930B2 (ja) | 2012-06-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101109428B1 (ko) | 가요성 라이너를 구비한 연료 카트리지 | |
JP5883056B2 (ja) | バルブ | |
US7681760B2 (en) | Liquid cartridge | |
US20060151494A1 (en) | Fuel container for fuel cell | |
EP1803997A1 (en) | Connector structure with lock mechanism | |
US8820706B2 (en) | Valve device | |
EP2480944A1 (en) | Gas regulator with safety valve assemblies | |
JP5587603B2 (ja) | 燃料電池用燃料カートリッジを再充填する装置 | |
JP4947930B2 (ja) | 燃料電池用燃料容器 | |
JP4852823B2 (ja) | 燃料電池用の液体燃料カートリッジ | |
US7766032B2 (en) | Fuel container for fuel cell | |
US20080105708A1 (en) | Fluid supply container and fuel cell system using the same | |
EP1993018A2 (en) | Pressure regulator | |
JP4996099B2 (ja) | 燃料電池用燃料カートリッジ、燃料電池およびカップラ | |
JP4987308B2 (ja) | 燃料カートリッジ | |
JP2005298302A (ja) | 水素カートリッジおよび機器 | |
US20060210842A1 (en) | Fuel container and fuel cell therewith | |
JP2007059224A (ja) | 液体容器の検査方法 | |
JP4880318B2 (ja) | 燃料カートリッジ | |
JP4634728B2 (ja) | 燃料電池用燃料容器 | |
JP4733351B2 (ja) | 燃料電池用燃料容器 | |
JP2010276073A (ja) | リリーフ弁 | |
JP2009091231A (ja) | 液体供給装置、水素発生装置及び燃料電池システム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200680024604.3 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1120060019562 Country of ref document: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020087002815 Country of ref document: KR |
|
RET | De translation (de og part 6b) |
Ref document number: 112006001956 Country of ref document: DE Date of ref document: 20080521 Kind code of ref document: P |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 06781611 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11996957 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8607 |