JP2005327538A - Liquid fuel storage container - Google Patents

Liquid fuel storage container Download PDF

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JP2005327538A
JP2005327538A JP2004143382A JP2004143382A JP2005327538A JP 2005327538 A JP2005327538 A JP 2005327538A JP 2004143382 A JP2004143382 A JP 2004143382A JP 2004143382 A JP2004143382 A JP 2004143382A JP 2005327538 A JP2005327538 A JP 2005327538A
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liquid fuel
storage container
container
fuel
follower
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Toshifumi Kamiya
俊史 神谷
Yasunari Kabasawa
康成 椛澤
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Casio Computer Co Ltd
Mitsubishi Pencil Co Ltd
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Casio Computer Co Ltd
Mitsubishi Pencil Co Ltd
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    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid fuel storage container having simple structure preventing leak or evaporation of fuel from the storage container caused by boiling and evaporation of liquid fuel in the fuel storage container even when the liquid fuel cell is left under high temperature condition. <P>SOLUTION: The liquid fuel storage container has such structure that the container is partitioned into two parts of a part housing a follow-up body 12 air-tightly moving in the container according to the fuel consumption and at least a sealed part in which liquid fuel 11 is housed and sealed with the follow-up body and a liquid fuel flowout part, and the follow-up body is pressed with a pressing means of gas such as air or other pressing means to press the liquid fuel. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、小型液体燃料電池の液体燃料貯蔵容器に関し、更に詳しくは、貯蔵容器内で液体燃料を追従体にて封止し、かつ空気等の気体やその他の押圧手段にて追従体を押圧して液体燃料を加圧するようにした構造の液体燃料貯蔵容器に関する。   The present invention relates to a liquid fuel storage container of a small liquid fuel cell. More specifically, the liquid fuel is sealed with a follower in the storage container, and the follower is pressed with a gas such as air or other pressing means. The present invention relates to a liquid fuel storage container having a structure in which liquid fuel is pressurized.

近年、クリーンなエネルギー源としての燃料電池を各種の用途に用いることが検討されており、その中でも、メタノールと水を含む液体燃料やその他の液体燃料を直接供給するだけで発電できる液体燃料電池が注目されてきている。そして、その中でも特に携帯電話や携帯用電子機器の電源として用いられるのに好適なように小型化した液体燃料電池も提案されている（例えば、特許文献１）。   In recent years, the use of fuel cells as clean energy sources in various applications has been studied, and among them, liquid fuel cells that can generate electricity simply by directly supplying liquid fuel containing methanol and water and other liquid fuels Has attracted attention. Among them, a liquid fuel cell that has been miniaturized so as to be particularly suitable for use as a power source for a mobile phone or a portable electronic device has been proposed (for example, Patent Document 1).

しかし、これら提案された小型の液体燃料電池には、燃料電池を車のダッシュボードなどの高温になる場所に放置した場合に、液体燃料貯蔵容器が小さいため、容器内のメタノール等の液体燃料が高温度条件の下で沸騰して、燃料の気化により貯蔵容器から燃料が漏洩したり、蒸発したりすることがある。
特開２００４−６３２００号（特許請求の範囲等） However, in these proposed small liquid fuel cells, the liquid fuel storage container is small when the fuel cell is left in a high temperature place such as a dashboard of a car. Boiling under high temperature conditions may cause fuel to leak or evaporate from the storage container due to fuel vaporization.
Japanese Patent Application Laid-Open No. 2004-63200 (claims, etc.)

本発明は、前述した課題、すなわち、液体燃料電池を高温条件下に放置した場合でも、燃料貯蔵容器内の液体燃料が沸騰して、燃料の気化により貯蔵容器から燃料が漏洩したり、蒸発したりすることのない、簡便な構造の液体燃料貯蔵容器を提案することを目的とする。     The present invention has the above-described problem, that is, even when the liquid fuel cell is left under a high temperature condition, the liquid fuel in the fuel storage container boils and the fuel leaks or evaporates from the storage container due to vaporization of the fuel. It is an object of the present invention to propose a liquid fuel storage container having a simple structure that does not occur.

本発明者らは、上記課題等に鑑み、これを解決しようとするものであり、貯蔵容器内で液体燃料を追従体にて封止し、かつ空気等の気体やその他の押圧手段にて追従体を押圧して液体燃料を加圧するようにした構造にすることによって、本発明を完成するに至ったのである。
すなわち、本発明は、次の（１）〜（５）の発明によって構成される。
（１）容器内に、燃料消費にともなって容器内を液密に移動する追従体を収容する部分と、液体燃料流出部と該追従体によって少なくとも密封された液体燃料を収容した部分の二つの部分に仕切られたことを特徴とする燃料電池の液体燃料貯蔵容器。
（２）前記容器内において、追従体を収容する部分には空気等の気体が封入されており、外気からは隔絶密封された状態にあり、内部に封入された空気等の気体によって追従体を押圧して液体燃料を加圧するようにしたことを特徴とする上記（１）に記載の燃料電池の液体燃料貯蔵容器。
（３）前記容器内の空気等の気体が封入された部分の壁面に、少なくとも一つの空気置換可能な弁が設けられていることを特徴とする上記（１）又は（２）に記載の燃料電池の液体燃料貯蔵容器。
（４）前記弁が逆止弁であることを特徴とする上記（１）〜（３）に記載の燃料電池の液体燃料貯蔵容器。
（５）前記逆止弁が５００ｋＰａの内圧においてもリークしないことを特徴とする上記（１）〜（４）に記載の燃料電池の液体燃料貯蔵容器。
（６）容器内の追従体を収容する部分内に、追従体を押圧する手段として、弾撥体を封入したことを特徴とする上記（１）に記載の燃料電池の液体燃料貯蔵容器。
（７）容器内の追従体を収容する部分内に、追従体を押圧する手段として、容器の外部を通して直接追従体を押圧する手段を備えていることを特徴とする上記（１）に記載の燃料電池の液体燃料貯蔵容器。
（８）容器のいずれか一部分を、加熱等により容器内に一定以上の圧力が加わった際に、最初に分解して密閉状態を解除し、容器内部に貯溜されたガスを外部に放出するようにしたことを特徴とする上記（１）〜（７）に記載の燃料電池の液体燃料貯蔵容器。 In view of the above-mentioned problems, etc., the inventors of the present invention intend to solve this problem. The liquid fuel is sealed with a follower in a storage container, and followed by a gas such as air or other pressing means. The present invention has been completed by adopting a structure in which the body is pressed to pressurize the liquid fuel.
That is, the present invention is constituted by the following inventions (1) to (5).
(1) Two parts, a part that accommodates a follower that moves liquid-tightly in the container as the fuel is consumed, a liquid fuel outflow part, and a part that contains liquid fuel sealed at least by the follower A liquid fuel storage container for a fuel cell, which is partitioned into parts.
(2) In the container, a gas such as air is enclosed in a portion that accommodates the follower, and is isolated and sealed from the outside air, and the follower is removed by the gas such as air enclosed inside. The liquid fuel storage container for a fuel cell according to (1), wherein the liquid fuel is pressed to pressurize the liquid fuel.
(3) The fuel as described in (1) or (2) above, wherein at least one air-replaceable valve is provided on a wall surface of a portion of the container in which a gas such as air is enclosed. Battery liquid fuel storage container.
(4) The liquid fuel storage container for a fuel cell according to any one of (1) to (3), wherein the valve is a check valve.
(5) The liquid fuel storage container for a fuel cell as described in (1) to (4) above, wherein the check valve does not leak even at an internal pressure of 500 kPa.
(6) The liquid fuel storage container for a fuel cell according to (1), wherein an elastic body is enclosed as a means for pressing the follower in a portion of the container that accommodates the follower.
(7) The means for directly pressing the follower through the outside of the container is provided as a means for pressing the follower in the portion that accommodates the follower in the container. Liquid fuel storage container for fuel cells.
(8) When a certain level of pressure is applied to the inside of the container by heating or other means, the container is first decomposed to release the sealed state, and the gas stored inside the container is released to the outside. The liquid fuel storage container for a fuel cell according to any one of (1) to (7) above, wherein

本発明は、前記のように構成されており、容器内の追従体を通して液体燃料を加圧することによって、高温下で液体燃料が１気圧での沸点に達しても、沸騰することなく、燃料の気化による燃料貯蔵容器からの燃料の漏洩、蒸発を防止することができるものである。   The present invention is configured as described above. By pressurizing the liquid fuel through the follower in the container, even if the liquid fuel reaches the boiling point at 1 atm at a high temperature, the fuel does not boil. It is possible to prevent leakage and evaporation of fuel from the fuel storage container due to vaporization.

以下に、本発明を実施するための最良の実施形態を図面により詳しく説明する。
図１は、本発明の液体燃料貯蔵容器を組み込んだ直接メタノール型燃料電池（以下、単に「燃料電池」という）の基本形態を示すものである。
この燃料電池は、図１に示すように、液体燃料を収容する液体燃料貯蔵容器１０と、単位セル（燃料電池セル）２０、２０と上記液体燃料貯蔵容器１０に接続される浸透構造を有する燃料供給体３０と、該燃料供給体３０の下部に設けられる使用済み燃料貯蔵容器４０とを備え、上記各単位セル２０、２０は燃料供給体３０により燃料供給に対して直列に連結されて各単位セル２０、２０に燃料が順次供給される構造となっている。 Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a basic form of a direct methanol fuel cell (hereinafter simply referred to as “fuel cell”) incorporating the liquid fuel storage container of the present invention.
As shown in FIG. 1, the fuel cell includes a liquid fuel storage container 10 that stores liquid fuel, unit cells (fuel cell) 20 and 20, and a fuel having an osmotic structure connected to the liquid fuel storage container 10. A unit 30 and a spent fuel storage container 40 provided below the fuel supply unit 30 are provided. The unit cells 20 and 20 are connected in series to the fuel supply by the fuel supply unit 30 and are connected to the unit. The fuel is sequentially supplied to the cells 20 and 20.

図２は、本発明の液体燃料貯蔵容器１０の第一の実施形態を示す概要図である。
この液体燃料貯蔵容器１０は、チューブ状の燃料貯溜体であり、容器内部を液体燃料１１に接し、液体燃料１１と液密に移動する追従体１２によって、燃料貯溜室１３と気体収容室１４に仕切られており、液体燃料貯蔵容器１０の燃料供給体３０に接続する燃料供給口１５には、液体燃料貯蔵容器１０→燃料電池本体の逆止弁１６が、気体収容室１４には、外部→液体燃料貯蔵容器１０の逆止弁１７が設けられている。 FIG. 2 is a schematic view showing a first embodiment of the liquid fuel storage container 10 of the present invention.
The liquid fuel storage container 10 is a tube-shaped fuel storage body. The liquid fuel storage container 10 and the gas storage chamber 14 are brought into contact with the liquid fuel 11 by the follower 12 that moves in a liquid-tight manner with the liquid fuel 11. The fuel supply port 15 that is partitioned and connected to the fuel supply body 30 of the liquid fuel storage container 10 has a liquid fuel storage container 10 → a check valve 16 of the fuel cell main body, and the gas storage chamber 14 has an external → A check valve 17 for the liquid fuel storage container 10 is provided.

上記液体燃料貯蔵容器１０に収容される液体燃料１１としては、メタノールと水とからなるメタノール液が挙げられるが、燃料電極体において燃料として供給された水素が水素イオン（Ｈ＋）と電子（ｅ−）に分解できるものであれば、液体燃料は特に限定されず、燃料電極体の構造などにもよるが、例えば、ジメチルエーテル（ＤＭＥ、ＣＨ３ＯＣＨ３）などの各水素源を有する液体燃料も用いることができる。
また、上記液体燃料貯蔵容器１０の材質としては、収容される液体燃料１１に対して保存安定性、耐久性を有するものであれば、特に限定されず、例えば、ステンレスなどの金属製、ポリプロピレン、ポリエチレン、ポリエチレンテレフタレート（ＰＥＴ）などの合成樹脂が挙げられる。
液体燃料１１と接し、液体燃料貯蔵容器１０内を液密に移動する追従体１２は、固形状のものか、柔らかいものでもエラストマー系の材料であり、追従体１２の周りにグリース状の材料を付着させて容器内を移動しやすくしても良い。 Examples of the liquid fuel 11 accommodated in the liquid fuel storage container 10 include a methanol liquid composed of methanol and water, but hydrogen supplied as fuel in the fuel electrode body is hydrogen ions (H + ) and electrons (e The liquid fuel is not particularly limited as long as it can be decomposed into (), and depending on the structure of the fuel electrode body, for example, a liquid fuel having each hydrogen source such as dimethyl ether (DME, CH 3 OCH 3 ) may also be used. Can be used.
The material of the liquid fuel storage container 10 is not particularly limited as long as it has storage stability and durability with respect to the liquid fuel 11 to be stored. For example, a metal such as stainless steel, polypropylene, Examples thereof include synthetic resins such as polyethylene and polyethylene terephthalate (PET).
The follower 12 that is in contact with the liquid fuel 11 and moves in a liquid-tight manner in the liquid fuel storage container 10 is a solid or soft elastomer material, and a grease-like material is placed around the follower 12. It may be attached to facilitate movement in the container.

上記液体燃料貯蔵容器１０の気体収容室１４に封止されて収容される気体は、空気、もしくは空気から酸素を除いた窒素ガスやヘリウムなどの不活性ガスが望ましく、常温においては加圧されていなくても問題なく、温度上昇とともに気体が膨張して、追従体１２を通して液体燃料１１を加圧して、液体燃料の沸騰を抑えられれば良い。実際に、加圧していない空気を封入するだけでも、温度上昇とともに空気が膨張し、追従体１２を通して液体燃料１１を加圧し、低沸点の溶剤を含む液体燃料の沸騰を抑える効果が認められる。
常温下で加圧されていなくても、液体燃料１１は燃料供給体３０を通して単位セル２０に供給されるため、燃料使用時に押圧して液体燃料を押し出すことは考慮していないので、加圧気体といってもその圧力は、それほど大きくなく、液体燃料を使用し終えた時点で１気圧になっていれば良いというレベルである。 The gas sealed and stored in the gas storage chamber 14 of the liquid fuel storage container 10 is desirably air or an inert gas such as nitrogen gas or helium obtained by removing oxygen from the air, and is pressurized at room temperature. There is no problem even if it does not matter, as long as the temperature rises, the gas expands and the liquid fuel 11 is pressurized through the follower 12 to suppress boiling of the liquid fuel. Actually, even if air that has not been pressurized is simply sealed, the air expands as the temperature rises, and the liquid fuel 11 is pressurized through the follower 12, thereby suppressing the boiling of the liquid fuel containing the low-boiling solvent.
Even if the liquid fuel 11 is not pressurized at normal temperature, the liquid fuel 11 is supplied to the unit cell 20 through the fuel supply body 30. Therefore, it is not considered to push out the liquid fuel by pressing when using the fuel. However, the pressure is not so high, and it should be 1 atm when the liquid fuel is used.

上記液体燃料貯蔵容器１０の液体燃料貯溜室１３には、燃料電池本体から液体燃料貯蔵容器１０へ燃料が逆流しないように設けてある逆止弁１６に刺さって燃料供給体３０に接続する細いパイプ状の燃料供給口１５があり、そこから燃料供給体３０を通して単位セル２０に液体燃料１１が供給される。   In the liquid fuel storage chamber 13 of the liquid fuel storage container 10, a thin pipe that is inserted into a check valve 16 provided so as not to flow back from the fuel cell main body to the liquid fuel storage container 10 and connected to the fuel supply body 30. The liquid fuel 11 is supplied from the fuel supply port 15 to the unit cell 20 through the fuel supply body 30.

上記液体燃料貯蔵容器１０の気体収容室１４の壁面には、少なくとも一つの空気置換可能な逆止弁１７が設けられている。燃料電池使用時、あるいは何らかの事故により、液体燃料１１が減少してしまった時などに、この逆止弁１７を通して外部から空気などの加圧ガスを送気できるようにしておけば、安全性が増す。更に送気する口が逆止弁１７となっているので、一旦送り込んだ加圧ガスが外部にもれることはない。また、この逆止弁１７が５００ｋＰａまでの加圧に耐えられれば、更に安全である。   At least one air-replaceable check valve 17 is provided on the wall surface of the gas storage chamber 14 of the liquid fuel storage container 10. Safety can be improved if pressurized gas such as air can be supplied from the outside through the check valve 17 when the fuel cell is used or when the liquid fuel 11 is reduced due to some accident. Increase. Further, since the air supply port is the check valve 17, the pressurized gas once sent does not leak outside. Further, it is safer if the check valve 17 can withstand pressurization up to 500 kPa.

図３は、本発明の液体燃料貯蔵容器１０の第二の実施例を示す概要図である。
この液体燃料貯蔵容器１０は、第一実施例と同様なチューブ状の燃料貯溜体の内部の気体収容室１４内にコイルバネなどの弾撥体１８を収納してある。本発明の目的は、高温下での液体燃料１１の沸騰による液体燃料貯蔵容器１０からの燃料の漏洩、蒸発を防止することであるため、弾撥体１８の弾撥力は、それほど大きいものは必要なく、保管時に追従体１２と液体燃料１１を軽く押圧していれば良く、燃料使用時にも出来るだけ押圧している程度で問題ない。
第二の実施例の場合には、気体収容室１４内に封入した空気等の気体によって液体燃料１１の沸騰を抑えるのではないため、第一の実施例のように外気から気体収容室１４内を密封することや逆止弁１７を設けるなどの方策をとる必要がない。 FIG. 3 is a schematic view showing a second embodiment of the liquid fuel storage container 10 of the present invention.
The liquid fuel storage container 10 houses an elastic body 18 such as a coil spring in a gas storage chamber 14 inside a tubular fuel storage body similar to the first embodiment. The object of the present invention is to prevent the leakage and evaporation of fuel from the liquid fuel storage container 10 due to the boiling of the liquid fuel 11 at a high temperature. It is not necessary, and it is sufficient that the follower 12 and the liquid fuel 11 are lightly pressed at the time of storage.
In the case of the second embodiment, since the boiling of the liquid fuel 11 is not suppressed by a gas such as air enclosed in the gas storage chamber 14, the inside of the gas storage chamber 14 from the outside air as in the first embodiment. It is not necessary to take measures such as sealing the valve or providing a check valve 17.

図４は、本発明の液体燃料貯蔵容器１０の第三の実施例を示す概要図である。
この液体燃料貯蔵容器１０は、第一実施例と同様なチューブ状の燃料貯溜体の内部の気体収容室１４内に外部からピストンや押し棒１９を挿入して追従体１２を押圧し、液体燃料１１を加圧する。この場合も、第一の実施例のように外気から気体収容室１４内を密封することや逆止弁１７を設けるなどの方策をとる必要がない。ただ、液体燃料１１の減り具合に合わせて押圧力を調節する必要があるため、液体燃料貯蔵容器１０の一部又は全体を透明部材にすることによって、液体燃料１１の減り具合を観察し、手動で押し棒１９を押して調節する必要がある。 FIG. 4 is a schematic view showing a third embodiment of the liquid fuel storage container 10 of the present invention.
This liquid fuel storage container 10 inserts a piston and a push rod 19 from the outside into a gas storage chamber 14 inside a tube-shaped fuel storage body similar to the first embodiment, and presses the follower 12 so that the liquid fuel 11 is pressurized. Also in this case, it is not necessary to take measures such as sealing the inside of the gas storage chamber 14 from the outside air or providing a check valve 17 as in the first embodiment. However, since it is necessary to adjust the pressing force in accordance with the reduction degree of the liquid fuel 11, by making a part or the whole of the liquid fuel storage container 10 a transparent member, the reduction degree of the liquid fuel 11 is observed and manually operated. It is necessary to press the push bar 19 to adjust.

本発明のもう一つの特徴は、万が一過剰加圧状態になってしまった場合や、液体燃料貯蔵容器１０内の液体燃料１１が気化してしまった場合に、予め液体燃料貯蔵容器１０の一部分を一定の圧力（５気圧程度）が加わったところで、優先的に崩壊する構造に設計して液体燃料貯蔵容器１０の爆発を防止することにある。すなわち、耐圧構造の容器内に少し弱い接合を作っておいて、過剰な圧力が加わった場合に、そこが壊れて爆発を防止するような設計にすることである。   Another feature of the present invention is that a part of the liquid fuel storage container 10 is preliminarily disposed in the case where the liquid fuel storage container 10 is vaporized in the event of an excessive pressurization. When a certain pressure (about 5 atmospheres) is applied, the liquid fuel storage container 10 is prevented from exploding by designing a structure that collapses preferentially. In other words, a slightly weak joint is made in a pressure-resistant structure, and when excessive pressure is applied, it is designed to break and prevent explosion.

また、液体燃料１１を使い終わるなどして、全て排出した液体燃料貯蔵容器１０において、実施例のような押圧手段を取り除き、液密に液体燃料貯蔵容器１０内を移動する追従体１２のみを残しておけば、燃料電池本体の使用済み燃料排出口３１に液体燃料供給口１５を接続することによって、使用済み液体燃料１１の一時的な貯蔵容器としても使用することができる。   Further, in the liquid fuel storage container 10 that has been completely discharged, such as when the liquid fuel 11 has been used up, the pressing means as in the embodiment is removed, leaving only the follower 12 that moves in the liquid fuel storage container 10 in a liquid-tight manner. In this case, by connecting the liquid fuel supply port 15 to the spent fuel discharge port 31 of the fuel cell main body, it can be used as a temporary storage container for the spent liquid fuel 11.

本発明は、以上のごとく構成されているので、液体燃料電池の液体燃料貯蔵容器として小型で簡便な構造で、高温条件下での液体燃料の沸騰による容器からの燃料漏れや蒸発を防止することができ、かつ、万が一の容器の爆発も防止することができる。   Since the present invention is configured as described above, it has a small and simple structure as a liquid fuel storage container of a liquid fuel cell, and prevents fuel leakage and evaporation from the container due to boiling of the liquid fuel under high temperature conditions. It is possible to prevent the explosion of the container.

本発明の液体燃料貯蔵容器を組み込んだ燃料電池の基本形態を示す概念図である。It is a conceptual diagram which shows the basic form of the fuel cell incorporating the liquid fuel storage container of this invention. 本発明の第一の実施形態を示す概要図である。It is a schematic diagram showing a first embodiment of the present invention. 本発明の第二の実施形態を示す概要図である。It is a schematic diagram which shows 2nd embodiment of this invention. 本発明の第三の実施形態を示す概要図である。It is a schematic diagram which shows 3rd embodiment of this invention.

符号の説明Explanation of symbols

１０．液体燃料貯蔵容器
１１．液体燃料
１２．追従体
１３．燃料貯溜室
１４．気体収容室
１５．液体燃料供給口
１６．逆止弁
１７．逆止弁
１８．弾撥体
１９．押し棒
２０．単位セル（燃料電池セル）
３０．燃料供給体
３１．使用済み燃料排出口
４０．使用済み燃料貯蔵容器




























10. 10. Liquid fuel storage container Liquid fuel 12. Follower 13. Fuel storage chamber 14. Gas storage chamber 15. Liquid fuel supply port 16. Check valve 17. Check valve 18. Elastic body 19. Push bar 20. Unit cell (fuel cell)
30. Fuel supply body 31. Spent fuel outlet 40. Spent fuel storage container




























Claims (8)

容器内に、燃料消費にともなって容器内を液密に移動する追従体を収容する部分と、液体燃料流出部と該追従体によって少なくとも密封された液体燃料を収容した部分の二つの部分に仕切られたことを特徴とする燃料電池の液体燃料貯蔵容器。 The container is divided into two parts: a part that accommodates a follower that moves liquid-tightly in the container as fuel is consumed, and a liquid fuel outflow part and a part that contains liquid fuel sealed at least by the follower. A liquid fuel storage container for a fuel cell. 前記容器内において、追従体を収容する部分には空気等の気体が封入されており、外気からは隔絶密封された状態にあり、内部に封入された空気等の気体によって追従体を押圧して液体燃料を加圧するようにしたことを特徴とする請求項１に記載の燃料電池の液体燃料貯蔵容器。   In the container, a gas such as air is enclosed in a portion that accommodates the follower, and is isolated and sealed from the outside air, and the follower is pressed by the gas such as air enclosed inside. 2. The liquid fuel storage container for a fuel cell according to claim 1, wherein the liquid fuel is pressurized. 前記容器内の空気等の気体が封入された部分の壁面に、少なくとも一つの空気置換可能な弁が設けられていることを特徴とする請求項１，２に記載の燃料電池の液体燃料貯蔵容器。   3. The liquid fuel storage container for a fuel cell according to claim 1, wherein at least one valve capable of air replacement is provided on a wall surface of a portion of the container in which a gas such as air is sealed. . 前記弁が逆止弁であることを特徴とする請求項１〜３に記載の燃料電池の液体燃料貯蔵容器。   The liquid fuel storage container for a fuel cell according to claim 1, wherein the valve is a check valve. 前記逆止弁が５００ｋＰａの内圧においてもリークしないことを特徴とする請求項１〜４に記載の燃料電池の液体燃料貯蔵容器。   The liquid fuel storage container for a fuel cell according to claim 1, wherein the check valve does not leak even at an internal pressure of 500 kPa. 容器内の追従体を収容する部分内に、追従体を押圧する手段として、弾撥体を封入したことを特徴とする請求項１に記載の燃料電池の液体燃料貯蔵容器。   2. A liquid fuel storage container for a fuel cell according to claim 1, wherein an elastic body is enclosed as means for pressing the follower in a portion of the container that accommodates the follower. 容器内の追従体を収容する部分内に、追従体を押圧する手段として、容器の外部を通して直接追従体を押圧する手段を備えていることを特徴とする請求項１に記載の燃料電池の液体燃料貯蔵容器。   2. The fuel cell liquid according to claim 1, further comprising means for pressing the follower directly through the outside of the container as a means for pressing the follower in a portion of the container that accommodates the follower. Fuel storage container. 容器のいずれか一部分を、加熱等により容器内に一定以上の圧力が加わった際に、最初に分解して密閉状態を解除し、容器内部に貯溜されたガスを外部に放出するようにしたことを特徴とする請求項１〜７に記載の燃料電池の液体燃料貯蔵容器。









When a certain level of pressure is applied to the inside of the container by heating, etc., the container is first decomposed to release the sealed state, and the gas stored inside the container is released to the outside. A liquid fuel storage container for a fuel cell according to claim 1.









JP2004143382A 2004-05-13 2004-05-13 Liquid fuel storage container Pending JP2005327538A (en)

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