JPH04229957A - Fuel mixer for liquid fuel cell - Google Patents
Fuel mixer for liquid fuel cellInfo
- Publication number
- JPH04229957A JPH04229957A JP2408352A JP40835290A JPH04229957A JP H04229957 A JPH04229957 A JP H04229957A JP 2408352 A JP2408352 A JP 2408352A JP 40835290 A JP40835290 A JP 40835290A JP H04229957 A JPH04229957 A JP H04229957A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- mixer
- liquid
- water
- methanol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 121
- 239000007788 liquid Substances 0.000 title claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000005587 bubbling Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 66
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 16
- 229910002092 carbon dioxide Inorganic materials 0.000 description 8
- 239000001569 carbon dioxide Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Fuel Cell (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、液体燃料を使用した燃
料電池の液体燃料と水との混合機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for mixing liquid fuel and water in a fuel cell using liquid fuel.
【０００２】0002
【従来の技術】液体燃料電池に使用する液体燃料、例え
ば、メタノール燃料は燃料として適したメタノール濃度
があり、水と混合することによって燃料として用いられ
ている。しかしながら、メタノールと水とはその比重が
異なり、そのままではすぐに十分には混合することは困
難であった。2. Description of the Related Art Liquid fuel used in liquid fuel cells, such as methanol fuel, has a methanol concentration suitable for use as a fuel, and is used as a fuel by mixing it with water. However, methanol and water have different specific gravities, and it has been difficult to mix them immediately and thoroughly.
【０００３】■従来、液体燃料と水とを使用した燃料電
池としては、、例えば、特開昭６３−１３６４７２号公
報に記載されるものがあった。該公報に記載された技術
は、メタノールタンクと水タンクとを有し、それぞれの
タンクの液体は流量制御バルブを通じて燃料タンクへ導
かれ、該燃料タンク内でメタノールと水が自然拡散的に
混合が行なわれるものである。そして、この燃料タンク
からポンプによって燃料が燃料電池に供給されるように
なっている。[0003] Conventionally, as a fuel cell using liquid fuel and water, there has been one described, for example, in Japanese Patent Application Laid-Open No. 136472/1983. The technology described in this publication includes a methanol tank and a water tank, and the liquid in each tank is led to a fuel tank through a flow rate control valve, and methanol and water are mixed by natural diffusion within the fuel tank. It is done. Fuel is then supplied from this fuel tank to the fuel cell by a pump.
【０００４】■また、別の従来技術としては、例えば、
特開昭６２−３７８８１号公報に記載されるものがあっ
た。該公報に記載された技術は、燃料室内に設けたファ
ンをモータにより回転させて攪拌を行なったり、ピスト
ンを用いて攪拌したりするものである。[0004] Also, as another conventional technique, for example,
There was one described in JP-A-62-37881. The technology described in this publication involves stirring by rotating a fan provided in the fuel chamber with a motor, or stirring by using a piston.
【０００５】[0005]
【発明が解決しようとする課題】前記■の従来技術では
自然拡散的な混合であるので、メタノールと水との混合
を十分に行なうことができないし、また、素早く混合し
メタノール濃度を正確に調整することが困難である。前
記■の従来技術ではモータで燃料と水を攪拌する場合、
攪拌のために電力を必要とし、せっかく燃料電池で発生
した電力を消費してしまうことになり、システム全体の
効率が落ちることになる。[Problems to be Solved by the Invention] In the prior art (2) above, since mixing is done by natural diffusion, methanol and water cannot be mixed sufficiently, and the methanol concentration can be adjusted accurately by mixing quickly. difficult to do. In the conventional technology (■) above, when stirring fuel and water with a motor,
Electricity is required for stirring, and the electricity generated by the fuel cell is consumed, which reduces the efficiency of the entire system.
【０００６】そこで、本発明は液体燃料と水との混合に
余分なエネルギーを消費することなく、素早く均一に燃
料を自動的に混合することを目的とする。[0006] Accordingly, an object of the present invention is to automatically mix fuel quickly and uniformly without consuming extra energy for mixing liquid fuel and water.
【０００７】[0007]
【課題を解決するための手段】上記問題点を解決するた
めに、本発明は上部に液体燃料供給口と水供給口を有し
、下部に燃料排出口と回収燃料受入口を有する液体燃料
電池の燃料混合器としたものである。[Means for Solving the Problems] In order to solve the above problems, the present invention provides a liquid fuel cell having a liquid fuel supply port and a water supply port in the upper part, and a fuel discharge port and a recovered fuel inlet in the lower part. This is a fuel mixer.
【０００８】[0008]
【作用】メタノール燃料電池の燃料室の燃料極において
はメタノールが化学反応により消費されて次に式に示す
反応が起こっている。[Operation] At the fuel electrode in the fuel chamber of a methanol fuel cell, methanol is consumed by a chemical reaction, and the reaction shown in the following equation occurs.
【０００９】[0009]
【化１】[Chemical formula 1]
【００１０】セルスタックの燃料室から排出される回収
燃料は、上記式で示すように燃料極で発生した二酸化炭
素ガスと未消費の液体燃料と水からなる気体と液体の混
相流となっている。新しい燃料と水は上部から供給され
、セルスタックから排出される回収燃料は燃料混合器の
下部より供給されるので、上部より供給される液体燃料
と水は、下部より供給される回収燃料に含まれる二酸化
炭素ガスの泡の上昇する浮力で十分に攪拌されることに
なる。The recovered fuel discharged from the fuel chamber of the cell stack is a gas-liquid multiphase flow consisting of carbon dioxide gas generated at the fuel electrode, unconsumed liquid fuel, and water, as shown in the above equation. . New fuel and water are supplied from the top, and recovered fuel discharged from the cell stack is supplied from the bottom of the fuel mixer, so liquid fuel and water supplied from the top are included in the recovered fuel supplied from the bottom. The rising buoyancy of the carbon dioxide gas bubbles causes sufficient stirring.
【００１１】[0011]
【実施例】図１及び図２に基づいて本発明の燃料混合器
を説明する。図１は本発明の燃料混合器１を示す。燃料
混合器１は外形が四角柱または円柱のコップ状の容器と
なっており、その下部に燃料排出口２が、また同じく下
方の別の位置に回収燃料受入口３が設けられている。燃
料混合器１の上部には液体燃料供給口４と水供給口５が
設けられている。該液体燃料供給口４と水供給口５の更
に上部には、メタノールガスを凝縮して燃料として回収
するための平板状の冷却板６が互いに間隔を保ち層状に
配置されている。該冷却板６は、燃料混合器１内におい
ては透口が多数形成されており、また、燃料混合器１の
外部にかけて鍔状の冷却フィンを形成している。燃料混
合器１の最上部には二酸化炭素ガスだけを外部に透過す
る気液分離フィルター７が開口部を閉じている。さらに
、燃料混合器１内には内部の液体燃料の液面レベルを検
出するための液面レベルセンサ８およびメタノール濃度
を検出するためのメタノールセンサ９が設置されている
。DESCRIPTION OF THE PREFERRED EMBODIMENTS A fuel mixer according to the present invention will be explained based on FIGS. 1 and 2. FIG. 1 shows a fuel mixer 1 according to the invention. The fuel mixer 1 is a cup-shaped container with a square or cylindrical outer shape, and a fuel discharge port 2 is provided at the bottom of the container, and a recovered fuel intake port 3 is provided at another position below. A liquid fuel supply port 4 and a water supply port 5 are provided at the top of the fuel mixer 1 . Further above the liquid fuel supply port 4 and the water supply port 5, flat cooling plates 6 for condensing methanol gas and recovering it as fuel are arranged in layers at intervals. The cooling plate 6 has a large number of through holes formed inside the fuel mixer 1, and also forms flange-shaped cooling fins extending outside the fuel mixer 1. At the top of the fuel mixer 1, a gas-liquid separation filter 7, which allows only carbon dioxide gas to pass through to the outside, has an opening closed. Furthermore, a liquid level sensor 8 for detecting the level of the liquid fuel inside the fuel mixer 1 and a methanol sensor 9 for detecting the methanol concentration are installed in the fuel mixer 1.
【００１２】次に、図２に本発明の燃料混合器１を液体
燃料電池であるセルスタックに組み合わせた場合の液体
燃料系統の回路図を示す。メタノールタンク１０及び水
タンク１１はパイプにより燃料混合器１の上部の前記液
体燃料供給口４及び水供給口５へ通じており、メタノー
ルと水が燃料混合器１に供給される。燃料混合器１の下
部の燃料排出口２から排出された燃料はポンプ１２によ
りセルスタック１３に供給される。セルスタック１３で
消費された燃料は、前記式で示されるように二酸化炭素
ガスを生成し、残存するメタノールと水とともに、即ち
気相と液相の混相流となって前記ポンプ１２の排出力に
よってパイプを通じて燃料混合器１の下部の回収燃料受
入口３に循環される。燃料混合器１の下部から供給され
た回収燃料は二酸化炭素ガスの気泡を含んでおり、その
気泡の浮力により混合器内のメタノール、水及び回収燃
料は攪拌されて混合されることになる。なお、燃料混合
器１内の上部にある燃料供給口４及び水の供給口５と、
下部にある回収燃料受入口３との距離は遠ければ遠いほ
ど二酸化炭素ガスの上昇による攪拌効果が大となる。Next, FIG. 2 shows a circuit diagram of a liquid fuel system in which the fuel mixer 1 of the present invention is combined with a cell stack that is a liquid fuel cell. The methanol tank 10 and the water tank 11 are connected by pipes to the liquid fuel supply port 4 and the water supply port 5 at the upper part of the fuel mixer 1, and methanol and water are supplied to the fuel mixer 1. Fuel discharged from a fuel discharge port 2 at the bottom of the fuel mixer 1 is supplied to a cell stack 13 by a pump 12. The fuel consumed in the cell stack 13 generates carbon dioxide gas as shown in the above formula, and together with the remaining methanol and water, it becomes a mixed phase flow of gas and liquid phases and is discharged by the discharge force of the pump 12. The recovered fuel is circulated through a pipe to the recovered fuel receiving port 3 at the bottom of the fuel mixer 1. The recovered fuel supplied from the lower part of the fuel mixer 1 contains carbon dioxide gas bubbles, and the buoyancy of the bubbles causes the methanol, water, and recovered fuel in the mixer to be stirred and mixed. In addition, a fuel supply port 4 and a water supply port 5 located at the upper part of the fuel mixer 1,
The farther the distance from the recovered fuel receiving port 3 located at the bottom, the greater the stirring effect due to the rise of carbon dioxide gas.
【００１３】回収燃料を燃料混合器へ供給すのための動
力は、燃料混合器１からセルスタック１３へ燃料を供給
するためのポンプ１２の循環供給力によっている。した
がって、ポンプ１２の圧送力によってセルスタック１３
へ供給された燃料は、セルスタック１３内で一部消費さ
れ、次いでセルスタック１３から排出され、再び燃料混
合器１へ循環される。The power for supplying the recovered fuel to the fuel mixer is based on the circulating power of the pump 12 for supplying fuel from the fuel mixer 1 to the cell stack 13. Therefore, due to the pumping force of the pump 12, the cell stack 13
The fuel supplied to the cell stack 13 is partially consumed within the cell stack 13, and is then discharged from the cell stack 13 and circulated to the fuel mixer 1 again.
【００１４】液面に浮上した二酸化炭素ガスは最後には
燃料混合器１の最上部に設けた気液分離フィルタ７から
透過して外に排出される。一方、燃料混合器１内で一部
蒸発したメタノールは、外部に排出されてはならないか
ら、冷却板６で凝縮されて、メタノール液の滴となって
下方へ落ちて回収される。また、燃料混合器１内に設置
されている液面レベルセンサ８及びメタノールセンサ９
により検知した液面及び燃料濃度情報は、外部に設けた
コントローラー１４に入力され、該コントローラー１４
は燃料混合器１内の燃料の液面及び燃料濃度が常に適性
値に保たれるようにメタノールタンク１０及び水タンク
１１から供給されるパイプのバルブの開閉をコントロー
ルしている。The carbon dioxide gas that has risen to the surface of the liquid finally passes through the gas-liquid separation filter 7 provided at the top of the fuel mixer 1 and is discharged to the outside. On the other hand, methanol that has partially evaporated within the fuel mixer 1 must not be discharged to the outside, so it is condensed on the cooling plate 6 and becomes droplets of methanol liquid that fall downward and are collected. Also, a liquid level sensor 8 and a methanol sensor 9 installed in the fuel mixer 1
The liquid level and fuel concentration information detected by the controller 14 is input to an external controller 14.
controls the opening and closing of the valves of the pipes supplied from the methanol tank 10 and the water tank 11 so that the fuel level and fuel concentration in the fuel mixer 1 are always maintained at appropriate values.
【００１５】上記の実施例では液体燃料の例としてメタ
ノールを使用した例を示したが、液体燃料はメタノール
に限られず、燃料が消費されて気体を出すものなら適用
可能であり、例えば、ヒドラジン燃料でも使用可能であ
る。[0015] In the above embodiment, methanol was used as an example of the liquid fuel, but the liquid fuel is not limited to methanol, and any fuel that releases gas when consumed can be applied, such as hydrazine fuel. It can also be used.
【００１６】[0016]
【発明の効果】本発明は上部に液体燃料供給口と水供給
口を有し、下部に燃料排出口と回収燃料受入口を有する
液体燃料電池の燃料混合器としたので、上部より供給さ
れる液体燃料と水は、下部より供給される回収燃料に含
まれる二酸化炭素ガスの泡の上昇する浮力で十分に攪拌
される。また、燃料混合器内の攪拌のために特別な動力
を必要とせずに燃料を攪拌混合することができる。[Effects of the Invention] The present invention provides a fuel mixer for a liquid fuel cell that has a liquid fuel supply port and a water supply port at the top, and a fuel discharge port and a recovered fuel intake port at the bottom, so that the fuel mixer is supplied from the top. The liquid fuel and water are sufficiently stirred by the rising buoyancy of carbon dioxide gas bubbles contained in the recovered fuel supplied from the bottom. Further, fuel can be stirred and mixed without requiring special power for stirring within the fuel mixer.
【図１】本発明の液体燃料の燃料混合器を示す。1 shows a fuel mixer for liquid fuel according to the invention; FIG.
【図２】本発明の燃料混合器を液体燃料電池であるセル
スタックに組み合わせた場合の液体燃料系統の回路図で
ある。FIG. 2 is a circuit diagram of a liquid fuel system in which the fuel mixer of the present invention is combined with a cell stack that is a liquid fuel cell.
１ 燃料混合器 ２ 燃料排出口 ３ 回収燃料受入口 ４ 液体燃料供給口 ５ 水供給口 1 Fuel mixer 2 Fuel outlet 3 Recovered fuel intake port 4 Liquid fuel supply port 5 Water supply port
Claims (1)
し、下部に燃料排出口と回収燃料受入口を有する液体燃
料電池の燃料混合器。1. A fuel mixer for a liquid fuel cell, which has a liquid fuel supply port and a water supply port at the top, and a fuel discharge port and a recovered fuel intake port at the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2408352A JPH04229957A (en) | 1990-12-27 | 1990-12-27 | Fuel mixer for liquid fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2408352A JPH04229957A (en) | 1990-12-27 | 1990-12-27 | Fuel mixer for liquid fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04229957A true JPH04229957A (en) | 1992-08-19 |
Family
ID=18517813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2408352A Withdrawn JPH04229957A (en) | 1990-12-27 | 1990-12-27 | Fuel mixer for liquid fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04229957A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0859421A1 (en) * | 1997-01-17 | 1998-08-19 | dbb fuel cell engines GmbH | Liquid feul cell system |
| JP2004178818A (en) * | 2002-11-22 | 2004-06-24 | Toshiba Corp | Fuel cell system |
| JP2005150106A (en) * | 2003-10-24 | 2005-06-09 | Yamaha Motor Co Ltd | Fuel cell system and transport equipment using above |
| JP2005531890A (en) * | 2002-07-01 | 2005-10-20 | エスエフツェー スマート フュエル セル アーゲー | Fluid separation device |
| JP2006516063A (en) * | 2003-01-15 | 2006-06-15 | センダイン コーポレイション | Fuel supply method for direct methanol fuel cell |
| KR100626089B1 (en) * | 2004-12-31 | 2006-09-21 | 삼성에스디아이 주식회사 | Liquid fuel mixing apparatus and direct liquid feed fuel cell system having the same |
| JP2007005282A (en) * | 2005-06-24 | 2007-01-11 | Samsung Sdi Co Ltd | Fuel mixing tank and fuel cell system having the same |
| US7432003B2 (en) | 2002-11-22 | 2008-10-07 | Kabushiki Kaisha Toshiba | Mixing tank for fuel cell |
| US7582376B2 (en) | 2004-09-29 | 2009-09-01 | Kabushiki Kaisha Toshiba | Proton conductive polymer and fuel cell using the same |
-
1990
- 1990-12-27 JP JP2408352A patent/JPH04229957A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0859421A1 (en) * | 1997-01-17 | 1998-08-19 | dbb fuel cell engines GmbH | Liquid feul cell system |
| US5981096A (en) * | 1997-01-17 | 1999-11-09 | Daimlerchrysler Ag | Fuel cell system |
| JP2005531890A (en) * | 2002-07-01 | 2005-10-20 | エスエフツェー スマート フュエル セル アーゲー | Fluid separation device |
| JP2004178818A (en) * | 2002-11-22 | 2004-06-24 | Toshiba Corp | Fuel cell system |
| US7432003B2 (en) | 2002-11-22 | 2008-10-07 | Kabushiki Kaisha Toshiba | Mixing tank for fuel cell |
| US7563524B2 (en) | 2002-11-22 | 2009-07-21 | Kabushiki Kaisha Toshiba | Fuel cell system |
| JP2006516063A (en) * | 2003-01-15 | 2006-06-15 | センダイン コーポレイション | Fuel supply method for direct methanol fuel cell |
| JP2005150106A (en) * | 2003-10-24 | 2005-06-09 | Yamaha Motor Co Ltd | Fuel cell system and transport equipment using above |
| US7582376B2 (en) | 2004-09-29 | 2009-09-01 | Kabushiki Kaisha Toshiba | Proton conductive polymer and fuel cell using the same |
| KR100626089B1 (en) * | 2004-12-31 | 2006-09-21 | 삼성에스디아이 주식회사 | Liquid fuel mixing apparatus and direct liquid feed fuel cell system having the same |
| JP2007005282A (en) * | 2005-06-24 | 2007-01-11 | Samsung Sdi Co Ltd | Fuel mixing tank and fuel cell system having the same |
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Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980312 |