JP2005100942A - Fuel cell assembly - Google Patents

Fuel cell assembly Download PDF

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JP2005100942A
JP2005100942A JP2004189774A JP2004189774A JP2005100942A JP 2005100942 A JP2005100942 A JP 2005100942A JP 2004189774 A JP2004189774 A JP 2004189774A JP 2004189774 A JP2004189774 A JP 2004189774A JP 2005100942 A JP2005100942 A JP 2005100942A
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gas
flow path
heat exchanger
fuel cell
cell assembly
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JP4906248B2 (en
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Takashi Ono
孝 小野
Suehiro Imaizumi
末広 今泉
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Kyocera Corp
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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 fuel cell assembly which can be constructed relatively compactly, capable of utilizing exhaust heat in high efficiency by effectively restraining direct heat radiation from a power generation/combustion chamber (12) into the atmosphere. <P>SOLUTION: A plate-shaped heat exchanging device (30) having a first flow passage (48) and a second flow passage (50) at least on one surface of a housing (2) is arranged, and combustion gas is exhausted from the power generation/combustion chamber through the first flow passage, and at least either one of oxygen-containing gas or fuel gas is supplied to the power generation/combustion chamber through the second flow passage of the heat exchanging device. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、燃料電池組立体、更に詳しくはハウジング内に発電手段が配設されており、かかる発電手段に燃料ガスと共に酸素含有ガスが供給されることによって発電が行われ、排ガスがハウジングから排出される形態の燃料電池組立体に関する。   The present invention includes a fuel cell assembly, and more specifically, a power generation means disposed in a housing. Electric power is generated by supplying an oxygen-containing gas together with fuel gas to the power generation means, and exhaust gas is discharged from the housing. It is related with the fuel cell assembly of the form made.

次世代エネルギーとして、近年、固体高分子型、リン酸型、溶融炭酸塩型及び固体電解質型等の種々の型の燃料電池発電システムが提案されている。特に、固体電解質型燃料電池発電システムは、作動温度が１０００°Ｃと高いが、発電効率が高い、排熱が利用できる等の利点を有しており、研究開発が推し進められている。   In recent years, various types of fuel cell power generation systems such as solid polymer type, phosphoric acid type, molten carbonate type, and solid electrolyte type have been proposed as next-generation energy. In particular, the solid oxide fuel cell power generation system has an operating temperature as high as 1000 ° C., but has advantages such as high power generation efficiency and use of exhaust heat, and research and development are being promoted.

燃料電池発電システムの典型例においては、下記特許文献１に開示されている如く、ハウジング内に発電・燃焼室が規定され、かかる発電・燃焼室内にセルスタックを含む発電・燃焼手段が配設されている形態の燃料電池組立体を備えている。発電・燃焼室には、酸素含有ガスを供給するための酸素含有ガス供給路、燃料ガスを供給するための燃料ガス供給路及び発電・燃焼室から燃焼ガスを排出するための燃焼ガス排出路が付設されている。   In a typical example of a fuel cell power generation system, as disclosed in Patent Document 1 below, a power generation / combustion chamber is defined in a housing, and power generation / combustion means including a cell stack is disposed in the power generation / combustion chamber. The fuel cell assembly of the form is provided. The power generation / combustion chamber has an oxygen-containing gas supply path for supplying oxygen-containing gas, a fuel gas supply path for supplying fuel gas, and a combustion gas discharge path for discharging combustion gas from the power generation / combustion chamber. It is attached.

燃料電池組立体には熱交換手段も配設されており、酸素含有ガス導入路と燃焼ガス排出路とは共に熱交換手段を通って延在せしめられており、熱交換手段を通して流動せしめられる際に酸素含有ガスと燃焼ガスとが熱交換され、これによって酸素含有ガスが予熱される。
特開２０００−１４９９７６号公報 The fuel cell assembly is also provided with heat exchange means, and both the oxygen-containing gas introduction path and the combustion gas discharge path are extended through the heat exchange means and are allowed to flow through the heat exchange means. Then, the oxygen-containing gas and the combustion gas are heat-exchanged, whereby the oxygen-containing gas is preheated.
JP 2000-149976 A

従来の燃料電池組立体においては、発電・燃焼室とは全く別個に熱交換手段を配設しており、これに起因して組立体の嵩が相当大きくなる、発電・燃焼室を規定しているハウジングの壁面を通して大気に放熱される熱が相当大きく、従って排熱利用が充分ではない、という解決すべき問題が存在する。   In the conventional fuel cell assembly, the heat exchange means is arranged completely separately from the power generation / combustion chamber, and the power generation / combustion chamber is defined by which the bulk of the assembly becomes considerably large due to this. There is a problem to be solved that the heat radiated to the atmosphere through the wall surface of the housing is considerably large and therefore the exhaust heat utilization is not sufficient.

本発明は上記事実に鑑みてなされたものであり、その主たる技術的課題は、比較的コンパクトに構成することができると共に、発電室から大気への直接的放熱を効果的に抑制し、排熱を高効率で利用することができる、新規且つ改良された燃料電池組立体を提供することである。   The present invention has been made in view of the above-mentioned facts, and its main technical problem is that it can be configured relatively compactly and effectively suppresses direct heat dissipation from the power generation chamber to the atmosphere, thereby exhausting heat. It is an object to provide a new and improved fuel cell assembly that can be used with high efficiency.

本発明によれば、ハウジングの少なくとも１面には第一の流路と第二の流路を備えた板状の熱交換器が配設されており、前記排ガスは前記熱交換器の第一の流路を通して前記ハウジング内から排出され、前記排ガスと熱交換する流体が前記熱交換器の第二の流路を流れることによって、上記主たる技術的課題が達成される。   According to the present invention, a plate-like heat exchanger having a first flow path and a second flow path is disposed on at least one surface of the housing, and the exhaust gas is the first heat exchanger. The main technical problem is achieved by the fluid that is discharged from the housing through the flow path and exchanges heat with the exhaust gas through the second flow path of the heat exchanger.

即ち、本発明の燃料電池組立体は、ハウジングと、該ハウジング内に配設された発電手段とを備え、該発電手段に燃料ガス及び酸素含有ガスを供給して発電させ、前記ハウジングから排ガスが排出される燃料電池組立体において、前記ハウジングの少なくとも１面に第一の流路と第二の流路を備えた板状の熱交換器を配設するとともに、前記排ガスを前記熱交換器の第一の流路を通して前記ハウジングから排出し、前記排ガスと熱交換する流体が前記熱交換器の第二の流路を流れることを特徴とする。   That is, the fuel cell assembly of the present invention includes a housing and power generation means disposed in the housing, and supplies the fuel gas and oxygen-containing gas to the power generation means to generate power, and exhaust gas is emitted from the housing. In the discharged fuel cell assembly, a plate-shaped heat exchanger having a first flow path and a second flow path is disposed on at least one surface of the housing, and the exhaust gas is discharged from the heat exchanger. A fluid that is discharged from the housing through the first flow path and exchanges heat with the exhaust gas flows through the second flow path of the heat exchanger.

このような燃料電池組立体では、ハウジングの少なくとも１面を利用して板状熱交換器を配設している故に全体の嵩を必要最小限にせしめることができ、そしてまた板状熱交換器がハウジングの少なくとも１面に存在することにより、ハウジングの壁面を通して大気に熱が放散されるのを効果的に抑制することができる。   In such a fuel cell assembly, the plate-shaped heat exchanger is disposed using at least one surface of the housing, so that the overall volume can be minimized, and the plate-shaped heat exchanger is also provided. Is present on at least one surface of the housing, it is possible to effectively suppress heat dissipation to the atmosphere through the wall surface of the housing.

また、本発明の燃料電池組立体は、発電・燃焼室を規定するハウジングと、該ハウジング内に配設された発電・燃焼手段とを備え、該発電・燃焼手段に燃料ガス及び酸素含有ガスを供給し、前記発電・燃焼室内に生成された燃焼ガスを排ガスとして前記熱交換器の第一の流路を通して前記発電・燃焼室から排出し、前記酸素含有ガスと前記燃料ガスとのいずれか一方を前記熱交換器の第二の流路を通して前記発電・燃焼手段に供給することを特徴とする。このような燃料電池組立体では、高温の燃焼ガスと、外部から熱交換器に供給された酸素含有ガス及び燃料ガスのうちいずれか一方との熱交換を、板状熱交換器により行うことができる。   The fuel cell assembly of the present invention comprises a housing that defines a power generation / combustion chamber, and power generation / combustion means disposed in the housing, and the fuel gas and oxygen-containing gas are supplied to the power generation / combustion means. And supplying the combustion gas generated in the power generation / combustion chamber as exhaust gas from the power generation / combustion chamber through the first flow path of the heat exchanger, and either one of the oxygen-containing gas and the fuel gas Is supplied to the power generation / combustion means through a second flow path of the heat exchanger. In such a fuel cell assembly, heat exchange between the high-temperature combustion gas and any one of the oxygen-containing gas and the fuel gas supplied from the outside to the heat exchanger can be performed by a plate heat exchanger. it can.

さらに、本発明の燃料電池組立体は、発電手段に燃料ガス及び酸素含有ガスを供給し、余剰の燃料ガス及び／又は余剰の酸素含有ガスを排ガスとして熱交換器の第一の流路を通して前記ハウジングから回収するとともに、前記ハウジング外から新たな酸素含有ガスと燃料ガスとのいずれか一方を前記熱交換器の第二の流路を通してハウジング内に供給することを特徴とする。このような燃料電池組立体では、発電手段に供給され発電反応に用いられなかった高温の余剰の燃料ガス及び／又は余剰の酸素含有ガスと、外部から熱交換器に供給された酸素含有ガス及び燃料ガスのうちいずれか一方との熱交換を、板状熱交換器により行うことができる。   Furthermore, the fuel cell assembly of the present invention supplies the fuel gas and the oxygen-containing gas to the power generation means, and uses the excess fuel gas and / or the excess oxygen-containing gas as exhaust gas through the first flow path of the heat exchanger. In addition to being recovered from the housing, one of fresh oxygen-containing gas and fuel gas is supplied from the outside of the housing into the housing through the second flow path of the heat exchanger. In such a fuel cell assembly, the high-temperature surplus fuel gas and / or surplus oxygen-containing gas that was supplied to the power generation means and was not used for the power generation reaction, the oxygen-containing gas supplied from the outside to the heat exchanger, and Heat exchange with either one of the fuel gases can be performed by a plate heat exchanger.

また、本発明の燃料電池組立体は、第一の流路の外側に第二の流路が形成されていることを特徴とする。このような燃料電池組立体では、高温の排ガスが流れる第一の流路が、排ガスと熱交換する流体が流れる第二の流路よりも内側にあるため、ハウジング内をより高温に維持できる。   The fuel cell assembly of the present invention is characterized in that a second flow path is formed outside the first flow path. In such a fuel cell assembly, since the first flow path through which the high-temperature exhaust gas flows is located inside the second flow path through which the fluid that exchanges heat with the exhaust gas flows, the inside of the housing can be maintained at a higher temperature.

さらに、本発明の燃料電池組立体は、排ガスと熱交換する流体が水であることを特徴とする。このような燃料電池組立体では、燃焼ガス、又は、発電反応に用いられなかった高温の余剰の燃料ガス及び／又は余剰の酸素含有ガスと、水との熱交換を、板状熱交換器により行うことができ、例えば、外部から供給された水を熱交換器に供給し、この熱交換器で排ガスと熱交換し、熱交換器から高温の水を引き出すことができ、燃料電池組立体の一部を給湯器として用いることができる。   Furthermore, the fuel cell assembly of the present invention is characterized in that the fluid that exchanges heat with the exhaust gas is water. In such a fuel cell assembly, heat exchange between the combustion gas or high-temperature surplus fuel gas and / or surplus oxygen-containing gas that has not been used in the power generation reaction is performed by a plate heat exchanger. For example, water supplied from the outside can be supplied to the heat exchanger, heat exchange with the exhaust gas can be performed with this heat exchanger, and high-temperature water can be drawn from the heat exchanger. A part can be used as a water heater.

また、本発明の燃料電池組立体は、熱交換器は、水が流れる第三の流路を有しており、該第三の流路が最も外側に形成されていることを特徴とする。このような燃料電池組立体では、燃料電池組立体の外側に水の流れる流路が形成されているため、水との熱交換で、排ガスの熱エネルギーを最大限有効に用いることができるとともに、燃料電池組立体の外面が高温化することを防止できる。   In the fuel cell assembly of the present invention, the heat exchanger has a third flow path through which water flows, and the third flow path is formed on the outermost side. In such a fuel cell assembly, the flow path of water is formed outside the fuel cell assembly, so that the heat energy of the exhaust gas can be used to the maximum extent by heat exchange with water, It is possible to prevent the outer surface of the fuel cell assembly from becoming hot.

また、本発明の燃料電池組立体は、熱交換器は、第二の流路の外側に第一の流路が形成され、該第一の流路の外側に、第三の流路が形成されていることを特徴とする。このような燃料電池組立体では、排ガスが流れる第一の流路の内側に、酸素含有ガスと燃料ガスとのいずれか一方を流すことができ、排ガスと第二の流路とが充分に熱交換することができる。また、排ガスが流れる第一の流路の外側に、水が流れる第三の流路を形成でき、水との熱交換で、排ガスの熱エネルギーを最大限有効に用いることができるとともに、燃料電池組立体の外面が高温化することを防止できる。   In the fuel cell assembly of the present invention, the heat exchanger has a first flow path formed outside the second flow path, and a third flow path formed outside the first flow path. It is characterized by being. In such a fuel cell assembly, either the oxygen-containing gas or the fuel gas can flow inside the first flow path through which the exhaust gas flows, and the exhaust gas and the second flow path are sufficiently heated. Can be exchanged. In addition, a third channel through which water flows can be formed outside the first channel through which exhaust gas flows, and the heat energy of the exhaust gas can be used to the maximum extent through heat exchange with water. It can prevent that the outer surface of an assembly heats up.

さらに、本発明の燃料電池組立体は、ハウジングは実質上鉛直に延在する平坦な両側面を有し、前記熱交換器は平板状であり両側面の各々に配設されていることを特徴とする。このような燃料電池組立体では、発電手段を介して対向する位置に熱交換器が配設されることになり、ハウジング内の温度分布を均一化できる。   Further, in the fuel cell assembly of the present invention, the housing has flat side surfaces extending substantially vertically, and the heat exchanger is flat and disposed on each side surface. And In such a fuel cell assembly, the heat exchanger is disposed at a position facing through the power generation means, and the temperature distribution in the housing can be made uniform.

また、本発明の燃料電池組立体では、ハウジングの対向する２面と、該２面間の１面に熱交換器が配設されており、前記２面間の１面に配設された熱交換器は、排ガスと水を熱交換することを特徴とする。このような燃料電池組立体では、排ガスを有効に活用できるとともに、ハウジングの対向する２面間の１面に排ガスと水が熱交換する熱交換器が配設されているため小型化できる。   In the fuel cell assembly of the present invention, the heat exchanger is disposed on the two opposing surfaces of the housing and on one surface between the two surfaces, and the heat disposed on the one surface between the two surfaces. The exchanger is characterized by exchanging heat between exhaust gas and water. In such a fuel cell assembly, the exhaust gas can be used effectively, and a heat exchanger for exchanging heat between the exhaust gas and water is disposed on one surface between two opposing surfaces of the housing, so that the size can be reduced.

また、本発明の燃料電池組立体では、排ガスは、ハウジングの対向する２面に配設された熱交換器の第一の流路を流れた後、前記２面間の１面に配設された熱交換器の第一の流路を流れることを特徴とする。このような燃料電池組立体では、例えば、燃焼ガス等の排ガスと、酸素含有ガス及び燃料ガスのうちいずれか一方との熱交換を充分に行い、酸素含有ガス等を高温化した後、水との熱交換に排ガスを利用でき、排ガスの熱エネルギーを充分に活用できる。   In the fuel cell assembly of the present invention, the exhaust gas flows through the first flow path of the heat exchanger disposed on the two opposite surfaces of the housing, and then is disposed on one surface between the two surfaces. It flows through the first flow path of the heat exchanger. In such a fuel cell assembly, for example, sufficient heat exchange between exhaust gas such as combustion gas and any one of oxygen-containing gas and fuel gas is performed, and after oxygen-containing gas or the like is heated, water and Exhaust gas can be used for heat exchange, and the thermal energy of the exhaust gas can be fully utilized.

さらに、本発明の燃料電池組立体では、熱交換器における第一の流路と第二の流路とは面の厚さ方向に積層されており、該第一の流路と該第二の流路とはジグザグ状に延在せしめられている対向流路であることを特徴とする。このような構造とすることにより、熱交換率を大きくすることができる。   Further, in the fuel cell assembly of the present invention, the first flow path and the second flow path in the heat exchanger are laminated in the thickness direction of the surface, and the first flow path and the second flow path are stacked. The flow path is a counter flow path extending in a zigzag shape. With such a structure, the heat exchange rate can be increased.

また、本発明の燃料電池組立体では、熱交換器が、排ガス収容空間中に水が流れる配管を蛇行させて形成されていることを特徴とする。このような燃料電池組立体では、排ガスと水との熱交換を充分に行うことができる。   In the fuel cell assembly of the present invention, the heat exchanger is formed by meandering a pipe through which water flows in the exhaust gas accommodating space. In such a fuel cell assembly, heat exchange between exhaust gas and water can be sufficiently performed.

さらに、本発明の燃料電池組立体では、ハウジングの下端部に位置する下部ガス室、前記ハウジングの上端部に位置する上部ガス室、及び前記ハウジング内を上下方向に延在して該上部ガス室と該下部ガス室とを連通せしめる連通ガス室が配設されており、第二の流路は熱交換器の下端に配設された流入口と前記熱交換器の上端に配設され前記上部ガス室に続く流出口とを有し、前記酸素含有ガスと前記燃料ガスとのいずれか一方は前記流入口から前記第二の流路に流入せしめられ、前記第二の流路から前記上部ガス室、前記連通ガス室及び前記下部ガス室を通って発電手段に供給されることを特徴とする。   Further, in the fuel cell assembly of the present invention, the lower gas chamber located at the lower end portion of the housing, the upper gas chamber located at the upper end portion of the housing, and the upper gas chamber extending vertically in the housing And a communication gas chamber that communicates with the lower gas chamber, and a second flow path is provided at an inlet disposed at a lower end of the heat exchanger and an upper end of the heat exchanger. An outlet that follows the gas chamber, and one of the oxygen-containing gas and the fuel gas is caused to flow into the second flow path from the inlet, and from the second flow path to the upper gas The power generation means is supplied through a chamber, the communication gas chamber, and the lower gas chamber.

また、本発明の燃料電池組立体は、ハウジング内には改質手段が配設されており、燃料ガスは前記改質手段を通して発電手段に供給され、酸素含有ガスは第二の流路を通して前記発電手段に供給されることを特徴とする。このような燃料電池組立体では、ハウジング内に改質器が収容されているため、改質器自体を充分に加熱でき、改質を充分に行うことができるとともに、酸素含有ガスの熱交換を行うことができる。   In the fuel cell assembly of the present invention, the reforming means is disposed in the housing, the fuel gas is supplied to the power generation means through the reforming means, and the oxygen-containing gas is passed through the second flow path. It is supplied to a power generation means. In such a fuel cell assembly, since the reformer is accommodated in the housing, the reformer itself can be sufficiently heated, the reforming can be sufficiently performed, and the heat exchange of the oxygen-containing gas can be performed. It can be carried out.

さらに、本発明の燃料電池組立体は、排ガスがハウジングの上方又は下方に排出され、該排ガスと熱交換する流体が、排ガスと反対側から熱交換器に供給されることを特徴とする。このような燃料電池組立体では、排ガスの排出と、この排ガスと熱交換する流体の供給とを異なる位置で行うことができ、設計の自由度を広げることができる。   Furthermore, the fuel cell assembly of the present invention is characterized in that the exhaust gas is discharged above or below the housing, and the fluid that exchanges heat with the exhaust gas is supplied to the heat exchanger from the side opposite to the exhaust gas. In such a fuel cell assembly, the exhaust gas can be discharged and the fluid that exchanges heat with the exhaust gas can be supplied at different positions, and the degree of freedom in design can be expanded.

また、本発明の燃料電池組立体は、排ガスと熱交換する流体が水の場合、ハウジング外から熱交換器に供給され、ハウジング外に排出されることを特徴とする。このような燃料電池組立体では、熱交換器を給湯器として利用できる。   The fuel cell assembly of the present invention is characterized in that when the fluid that exchanges heat with the exhaust gas is water, the fluid is supplied to the heat exchanger from the outside of the housing and discharged to the outside of the housing. In such a fuel cell assembly, the heat exchanger can be used as a water heater.

本発明の燃料電池組立体においては、ハウジングの少なくとも１面を利用して板状熱交換器を配設している故に全体の嵩を必要最小限にせしめることができ、そしてまた板状熱交換器がハウジングの少なくとも１面に存在することにより、ハウジングの壁面を通して大気に熱が放散されるのを効果的に抑制することができる。   In the fuel cell assembly of the present invention, the plate-shaped heat exchanger is disposed using at least one surface of the housing, so that the overall volume can be minimized, and the plate-shaped heat exchange is also performed. By the presence of the vessel on at least one surface of the housing, heat can be effectively suppressed from being dissipated to the atmosphere through the wall surface of the housing.

以下、本発明に従って構成された燃料電池組立体の好適実施形態を図示している添付図面を参照して、更に詳細に説明する。   Hereinafter, a preferred embodiment of a fuel cell assembly constructed according to the present invention will be described in more detail with reference to the accompanying drawings.

図１及び図２を参照して説明すると、図示の燃料電池組立体は略直方体形状であるハウジング２を具備している。このハウジング２の６個の壁面には適宜の断熱材料から形成された断熱壁、即ち上断熱壁４、下断熱壁６、右側断熱壁８、左側断熱壁１０、前断熱壁（図示していない）及び後断熱壁（図示していない）が配設されている。所望ならば、各断熱壁の外面に金属板製でよい外壁を配設することもできる。ハウジング２内には発電・燃焼室１２が規定されている。   Referring to FIGS. 1 and 2, the illustrated fuel cell assembly includes a housing 2 having a substantially rectangular parallelepiped shape. The six wall surfaces of the housing 2 are heat insulating walls formed of an appropriate heat insulating material, that is, an upper heat insulating wall 4, a lower heat insulating wall 6, a right heat insulating wall 8, a left heat insulating wall 10, and a front heat insulating wall (not shown). ) And a rear heat insulating wall (not shown). If desired, an outer wall, which may be made of a metal plate, may be disposed on the outer surface of each heat insulating wall. A power generation / combustion chamber 12 is defined in the housing 2.

ハウシジング２内の下端部には下部ガス室１４が配設され、上端部には上部ガス室１６が配設されている。下部ガス室１４は上下方向寸法が比較的小さい直方体形状でよく、同様に上部ガス室１６も上下方向寸法が比較的小さい直方体形状でよい。ハウジング２内の左右両側部には上下方向に延在する連通ガス室１８が配設されている。かかる連通ガス室１８は横方向（図１において左右方向）寸法が比較的小さい直方体形状である。連通ガス室１８の各々の上面には前後方向に間隔をおいて３個の連通筒２０が付設されており、かかる連通筒２０を介して連通ガス室１８の各々が上部ガス室１６の下面両側部に連通されている。連通ガス室１８の各々の下端部内側は下部ガス室１４の両側面に直接的に連結されている。従って、上部ガス室１６の両側部は連通ガス室１８を介して下部ガス室１４の両側部に連通せしめられている。下部ガス室１４の上面には横方向（図１において左右方向）に間隔をおいて上方に突出する５個の中空ガス噴出板２１が配設されている。かかるガス噴出板２１の下端は下部ガス室１４内に連通せしめられており、上部にはガス噴出孔（図示していない）が形成されている。   A lower gas chamber 14 is disposed at the lower end of the housing 2 and an upper gas chamber 16 is disposed at the upper end. The lower gas chamber 14 may have a rectangular parallelepiped shape with a relatively small vertical dimension, and similarly the upper gas chamber 16 may have a rectangular parallelepiped shape with a relatively small vertical dimension. A communication gas chamber 18 extending in the vertical direction is disposed on both the left and right sides in the housing 2. The communication gas chamber 18 has a rectangular parallelepiped shape with a relatively small size in the lateral direction (left-right direction in FIG. 1). Three communication cylinders 20 are attached to the upper surface of each communication gas chamber 18 at intervals in the front-rear direction, and each of the communication gas chambers 18 is provided on both sides of the lower surface of the upper gas chamber 16 via the communication cylinder 20. It communicates with the department. The inner sides of the lower ends of the communication gas chambers 18 are directly connected to both side surfaces of the lower gas chamber 14. Accordingly, both side portions of the upper gas chamber 16 are communicated with both side portions of the lower gas chamber 14 via the communication gas chamber 18. On the upper surface of the lower gas chamber 14, five hollow gas ejection plates 21 projecting upward at intervals in the lateral direction (left-right direction in FIG. 1) are arranged. The lower end of the gas ejection plate 21 is communicated with the lower gas chamber 14, and a gas ejection hole (not shown) is formed in the upper part.

下部ガス室１４上には、更に、横方向（図１において左右方向）に適宜の間隔をおいて４個のガス室２２ａ、２２ｂ、２２ｃ及び２２ｄが形成されている。かかるガス室２２ａ、２２ｂ、２２ｃ及び２２ｄの各々は上記ガス噴出板２１の間に配置されている。ガス室２２ａ、２２ｂ、２２ｃ及び２２ｄの各々は前後方向（図１において紙面に垂直な方向）に細長く延びる直方体形状でよい。そして、ガス室２２ａ、２２ｂ、２２ｃ及び２２ｄの各々上には、セルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄが配設されている。セルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄの各々は上下方向に延びる複数個のセルを前後方向に配列して構成されている。それ自体は周知の形態でよいセルは、燃料電極層、固体電解質層、酸素極層及びインターコネクタを含んでいる。   On the lower gas chamber 14, four gas chambers 22a, 22b, 22c and 22d are further formed at appropriate intervals in the lateral direction (left-right direction in FIG. 1). Each of the gas chambers 22 a, 22 b, 22 c and 22 d is disposed between the gas ejection plates 21. Each of the gas chambers 22a, 22b, 22c and 22d may have a rectangular parallelepiped shape elongated in the front-rear direction (direction perpendicular to the paper surface in FIG. 1). Cell stacks 24a, 24b, 24c and 24d are disposed on the gas chambers 22a, 22b, 22c and 22d, respectively. Each of the cell stacks 24a, 24b, 24c, and 24d is configured by arranging a plurality of cells extending in the vertical direction in the front-rear direction. The cell, which may be in a well-known form, includes a fuel electrode layer, a solid electrolyte layer, an oxygen electrode layer, and an interconnector.

ハウジング２内には上記セルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄの各々の上方に配設された改質手段２６ａ、２６ｂ、２６ｃ及び２６ｄも配設されている。かかる改質手段２６ａ、２６ｂ、２６ｃ及び２６ｄの各々は前後方向に細長く延びる直方体形状の中空ダクトを含んでおり、かかる中空ダクト内には都市ガスでよい燃料ガスを水素リッチガスに改質するためのそれ自体は周知の触媒（図示していない）が収容されている。図２を参照することによって明確に理解されるとおり、改質手段２６ｂ及び２６ｄの前端部下面には燃料ガス供給管２８ｂ及び２８ｄが接続され、改質手段２６ａ及び２６ｃの後端部下面にも同様に燃料ガス供給管（図示していない）が接続されている。これらの燃料ガス供給管はハウジング２の下断熱壁６を貫通してハウジング２外へ延在せしめられており、燃料ガス供給源（図示していない）に接続されている。改質手段２６ａ及び２６ｃの前端部下面と上記ガス室２２ａ及び２２ｃの前面とは夫々連結管２９ａ及び２９ｃによって接続され、同様に改質手段２６ｂ及び２６ｄの後端部下面と上記ガス室２２ｂ及び２２ｄの後面とは夫々連結管（図示していない）によって接続されている。後に更に言及する如く、都市ガスでよい燃料ガスが燃料ガス供給管を介して改質手段２６ａ、２６ｂ、２６ｃ及び２６ｄに供給され、改質手段２６ａ、２６ｂ、２６ｃ及び２６ｄにおいて水素リッチガスに改質され、しかる後に連結管を介してガス室２２ａ、２２ｂ、２２ｃ及び２２ｄに送給される。ガス室２２ａ、２２ｂ、２２ｃ及び２２ｄの各々の上面壁にはセルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄにおけるセルの各々のガス通路（図示していない）に連通せしめられている排出孔（図示していない）が形成されており、かかる排出孔を通してセルの各々のガス通路に水素リッチな燃料ガスが供給される。   In the housing 2, reforming means 26a, 26b, 26c and 26d disposed above the cell stacks 24a, 24b, 24c and 24d are also disposed. Each of the reforming means 26a, 26b, 26c, and 26d includes a rectangular parallelepiped hollow duct that extends in the front-rear direction. In the hollow duct, a fuel gas, which may be city gas, is reformed into a hydrogen-rich gas. As such, it contains a well-known catalyst (not shown). As clearly understood by referring to FIG. 2, fuel gas supply pipes 28b and 28d are connected to the lower surfaces of the front end portions of the reforming means 26b and 26d, and the rear surface of the rear end portions of the reforming means 26a and 26c are also connected. Similarly, a fuel gas supply pipe (not shown) is connected. These fuel gas supply pipes extend through the lower heat insulating wall 6 of the housing 2 to the outside of the housing 2 and are connected to a fuel gas supply source (not shown). The lower surfaces of the front end portions of the reforming means 26a and 26c and the front surfaces of the gas chambers 22a and 22c are connected by connecting pipes 29a and 29c, respectively. Similarly, the lower surfaces of the rear end portions of the reforming means 26b and 26d and the gas chambers 22b and 22c are connected. The rear surfaces of 22d are connected by connecting pipes (not shown). As will be further described later, city gas, which may be city gas, is supplied to the reforming means 26a, 26b, 26c and 26d through the fuel gas supply pipe, and reformed into hydrogen-rich gas in the reforming means 26a, 26b, 26c and 26d. Thereafter, the gas is supplied to the gas chambers 22a, 22b, 22c and 22d through the connecting pipe. The upper surface wall of each of the gas chambers 22a, 22b, 22c and 22d is a discharge hole (not shown) connected to each gas passage (not shown) of the cells in the cell stacks 24a, 24b, 24c and 24d. The hydrogen-rich fuel gas is supplied to each gas passage of the cell through the exhaust hole.

ハウジング２内には、後に更に言及する如く、作動開始時等に発電に使用されなかった燃料ガスと酸素含有ガスとを燃焼を開始するための点火手段（図示していない）も配設されている（定常運転時には発電に使用されなかった燃料ガスと酸素含有ガスとは自然発火する）。上記セルスタック２４ａ、２４ｂ、２４ｃ及び２４ｃは発電手段を構成し、点火手段は燃焼手段を構成し、従ってセルスタック２４ａ、２４ｂ、２４ｃ及び２４ｃ並びに点火手段は発電・燃焼手段を構成する。   In the housing 2, as will be further described later, ignition means (not shown) for starting combustion of fuel gas and oxygen-containing gas that were not used for power generation at the start of operation or the like is also provided. (The fuel gas and oxygen-containing gas that were not used for power generation during steady operation ignite spontaneously). The cell stacks 24a, 24b, 24c and 24c constitute a power generation means, and the ignition means constitutes a combustion means. Therefore, the cell stacks 24a, 24b, 24c and 24c and the ignition means constitute a power generation / combustion means.

本発明に従って構成された燃料電池組立体においては、ハウジング２の少なくとも１面には板状熱交換器が配設されていることが重要である。図示の実施形態においては、ハウジング２の実質上鉛直に延びる両側断熱壁即ち右側断熱壁８及び左側断熱壁１０の内側に全体として平板状である熱交換器３０が配設されている。そして、かかる熱交換器３０と上記連通ガス室１８との間には断熱部材３１が配設されている。   In the fuel cell assembly constructed according to the present invention, it is important that a plate heat exchanger is disposed on at least one surface of the housing 2. In the illustrated embodiment, a heat exchanger 30 having a flat plate shape as a whole is disposed inside both side heat insulating walls extending substantially vertically in the housing 2, that is, the right heat insulating wall 8 and the left heat insulating wall 10. A heat insulating member 31 is disposed between the heat exchanger 30 and the communication gas chamber 18.

図１と共に図３を参照して説明すると、熱交換器３０の各々は実質上鉛直に延在する中空平板形態のケース３２を含んでいる。かかるケース３２は内側壁３４、外側壁３６、底壁３８（図４及び図５）、上壁４０、前壁４２及び後壁４４を有する。ケース３２の厚さ方向（図１において左右方向）中間には仕切板４６が配設されており、ケース３２内は厚さ方向に積層された２個の流路、即ち内側に位置する第一の流路４８と外側に位置する第二の流路５０とに区画されている。図３と共に図４を参照して説明を続けると、第一の流路４８には上下方向に間隔をおいて実質上水平に延びる５個の仕切壁５２ａ、５２ｂ、５２ｃ、５２ｄ及び５２ｅが配設されている。仕切壁５２ａ、５２ｃ及び５２ｅの後縁はケース３２の後壁４４に接続されているが、前縁はケース３２の前壁４２に対して間隔をおいて後方に位置せしめられている。一方、仕切壁５２ｂ及び５２ｄの前縁はケ−ス３２の前壁４２に接続されているが、後縁はケース３２の後壁４４に対して間隔をおいて前方に位置せしめられている。かくして、第一の流路４８は図４に矢印で示すとおりのジグザグ状に延在せしめられている。図１と共に図５を参照することによって理解される如く、第二の流路５０にも上下方向に間隔をおいて実質上水平に延びる５個の仕切壁５４ａ、５４ｂ、５４ｃ、５４ｄ及び５４ｅが配設されている。仕切壁５４ａ、５４ｃ及び５４ｅの後縁はケース３２の後壁４４に接続されているが、前縁はケース３２の前壁４２に対して間隔をおいて後方に位置せしめられている。一方、仕切壁５４ｂ及び５４ｄの前縁はケ−ス３２の前壁４２に接続されているが、後縁はケース３２の後壁４４に対して間隔をおいて前方に位置せしめられている。かくして、第二の流路５０も図５に矢印で示すとおりのジグザグ状に延在せしめられている。   Referring to FIG. 3 in conjunction with FIG. 1, each of the heat exchangers 30 includes a case 32 in the form of a hollow flat plate that extends substantially vertically. The case 32 has an inner wall 34, an outer wall 36, a bottom wall 38 (FIGS. 4 and 5), a top wall 40, a front wall 42 and a rear wall 44. A partition plate 46 is disposed in the middle of the case 32 in the thickness direction (left-right direction in FIG. 1), and the inside of the case 32 is two flow paths stacked in the thickness direction, that is, a first located inside. Are divided into a second flow channel 50 and an outer second flow channel 50. 4 and FIG. 4, the first flow path 48 is provided with five partition walls 52a, 52b, 52c, 52d and 52e extending substantially horizontally at intervals in the vertical direction. It is installed. The rear edges of the partition walls 52 a, 52 c, and 52 e are connected to the rear wall 44 of the case 32, but the front edge is positioned rearward with respect to the front wall 42 of the case 32. On the other hand, the front edges of the partition walls 52 b and 52 d are connected to the front wall 42 of the case 32, but the rear edge is positioned forward with respect to the rear wall 44 of the case 32. Thus, the first flow path 48 is extended in a zigzag shape as indicated by an arrow in FIG. As can be understood by referring to FIG. 5 together with FIG. 1, the second flow path 50 also has five partition walls 54a, 54b, 54c, 54d and 54e extending in the vertical direction and extending substantially horizontally. It is arranged. The rear edges of the partition walls 54 a, 54 c, and 54 e are connected to the rear wall 44 of the case 32, but the front edges are positioned rearward with respect to the front wall 42 of the case 32. On the other hand, the front edges of the partition walls 54 b and 54 d are connected to the front wall 42 of the case 32, but the rear edge is positioned forward with respect to the rear wall 44 of the case 32. Thus, the second flow path 50 is also extended in a zigzag shape as indicated by an arrow in FIG.

図４に明確に図示如く、ケース３２の内側壁３４の上端部には流入開口５６が形成されており、第一の流路４８は流入開口５６を介して発電・燃焼室１２と連通せしめられている。更に詳述すると、図１を参照することによって理解されるとおり、熱交換器３０と連通ガス室１８との間に配設されている上記断熱部材３１の上端は流入開口５６の下縁と実質上同高さ乃至これよりも幾分下方に位置せしめられており、流入開口５６は連通ガス室１８の上端に配設されている３個の連通筒２０間を通して発電・燃焼室１２と連通せしめられている。一方、図５に図示する如く、ケース３２の上壁４０の外側部には流出開口５８が形成され、かかる流出開口５８に対応して上記上部ガス室１６の下面壁にも開口（図示していない）が形成されており、第二の流路５０は流出開口５８を介して上部ガス室１６に連通せしめられている。   As clearly shown in FIG. 4, an inflow opening 56 is formed at the upper end of the inner wall 34 of the case 32, and the first flow path 48 is communicated with the power generation / combustion chamber 12 through the inflow opening 56. ing. More specifically, as can be understood by referring to FIG. 1, the upper end of the heat insulating member 31 disposed between the heat exchanger 30 and the communication gas chamber 18 is substantially the same as the lower edge of the inflow opening 56. The inflow opening 56 is communicated with the power generation / combustion chamber 12 through the three communication cylinders 20 disposed at the upper end of the communication gas chamber 18. It has been. On the other hand, as shown in FIG. 5, an outflow opening 58 is formed on the outer side of the upper wall 40 of the case 32, and an opening (not shown) is formed in the lower wall of the upper gas chamber 16 corresponding to the outflow opening 58. The second flow path 50 communicates with the upper gas chamber 16 via the outflow opening 58.

図３乃至図５を参照して説明を続けると、上記熱交換器３０の後方には上下方向に細長く延びる二重筒体６０が配設されている。かかる二重筒体６０は円筒形状の内側筒部材６２と角筒形状の外側筒部材６４とを含んでいる。内側筒部材６２内にはガス流入路６６が規定されており、内側筒部材６２と外側筒部材６４との間には燃焼ガス排出路６８が規定されている。図５に明確に図示する如く、ガス流入路６６の下端（下流端）は熱交換器３０に形成されている上記第二の流路５０に連通されている。一方、図４に明確に図示する如く、燃焼ガス排出路６８の下端（上流端）は熱交換器３０に形成されている上記第一の流路４８に連通されている。   The description will be continued with reference to FIG. 3 to FIG. 5. A double cylinder 60 that is elongated in the vertical direction is disposed behind the heat exchanger 30. The double cylinder 60 includes a cylindrical inner cylinder member 62 and a square cylinder outer cylinder member 64. A gas inflow path 66 is defined in the inner cylinder member 62, and a combustion gas discharge path 68 is defined between the inner cylinder member 62 and the outer cylinder member 64. As clearly shown in FIG. 5, the lower end (downstream end) of the gas inflow path 66 is communicated with the second flow path 50 formed in the heat exchanger 30. On the other hand, as clearly shown in FIG. 4, the lower end (upstream end) of the combustion gas discharge path 68 communicates with the first flow path 48 formed in the heat exchanger 30.

上述したとおりの燃料電池組立体においては、都市ガスでよい燃料ガスが燃料ガス供給管（図２に２本の燃料ガス供給管２８ｂ及び２８ｄを図示している）を介して改質手段２６ａ、２６ｂ、２６ｃ及び２６ｄに供給され、改質手段２６ａ、２６ｂ、２６ｃ及び２６ｄにおいて水素リッチガスに改質された後に、連結管（図２に２本の連結管２９ａ及び２９ｃを図示している）を通してガス室２２ａ、２２ｂ、２２ｃ及び２２ｄに供給され、次いでセルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄに供給される。一方、空気でよい酸素含有ガスは二重筒体６０に形成されているガス流入路６６を通して熱交換器３０の第二の流路５０に供給され、次いで上部ガス室１６及び連通ガス室１８を通して下部ガス室１４に供給され、そしてガス噴出板２１の噴出孔からセルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄに向けて噴射される。セルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄの各々においては、酸素極において、
１／２Ｏ２＋２ｅ−→Ｏ２−（固体電解質）
の電極反応が生成され、燃料極において、
Ｏ２−（固体電解質）＋Ｈ２→Ｈ２Ｏ＋２ｅ−
の電極反応が生成されて発電される。発電された電力は適宜の取出ライン（図示していない）を通して取り出される。発電に使用されることなくセルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄから上方に流動した燃料ガス及び酸素含有ガスは点火手段によって点火されて燃焼される。周知の如く、セルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄにおける発電に起因して、そしてまた燃料ガスと酸素含有ガスとの燃焼に起因して発電・燃焼室１２内は例えば１０００℃程度の高温になる。改質手段２６ａ、２６ｂ、２６ｃ及び２６ｄは発電・燃焼室１２内に配設されており、従って発電・燃焼室１２内に生成される高温が燃料ガスの改質に効果的に利用される。 In the fuel cell assembly as described above, the fuel gas, which may be city gas, is reformed through the fuel gas supply pipes (two fuel gas supply pipes 28b and 28d are shown in FIG. 2). 26 b, 26 c and 26 d, and after being reformed into hydrogen-rich gas in the reforming means 26 a, 26 b, 26 c and 26 d, through connection pipes (two connection pipes 29 a and 29 c are shown in FIG. 2). The gas chambers 22a, 22b, 22c and 22d are supplied, and then supplied to the cell stacks 24a, 24b, 24c and 24d. On the other hand, oxygen-containing gas, which may be air, is supplied to the second flow path 50 of the heat exchanger 30 through the gas inflow path 66 formed in the double cylinder 60, and then passes through the upper gas chamber 16 and the communication gas chamber 18. The gas is supplied to the lower gas chamber 14 and is injected toward the cell stacks 24 a, 24 b, 24 c and 24 d from the ejection holes of the gas ejection plate 21. In each of the cell stacks 24a, 24b, 24c and 24d, at the oxygen electrode,
1 / 2O 2 + 2e − → O 2− (solid electrolyte)
The electrode reaction of
O 2− (solid electrolyte) + H 2 → H 2 O + 2e −
The electrode reaction is generated and power is generated. The generated electric power is taken out through an appropriate take-out line (not shown). The fuel gas and oxygen-containing gas flowing upward from the cell stacks 24a, 24b, 24c and 24d without being used for power generation are ignited and burned by the ignition means. As is well known, the temperature in the power generation / combustion chamber 12 becomes high, for example, about 1000 ° C. due to power generation in the cell stacks 24a, 24b, 24c and 24d and also due to combustion of fuel gas and oxygen-containing gas. . The reforming means 26a, 26b, 26c, and 26d are disposed in the power generation / combustion chamber 12, so that the high temperature generated in the power generation / combustion chamber 12 is effectively used for reforming the fuel gas.

発電・燃焼室１２内に生成された燃焼ガスは熱交換器３０に形成されている流入開口５６から第一の流路４８に流入し、ジグザグ状に延在する第一の流路４８を流動した後に二重筒体６０の燃焼ガス排出路６８を通して排出される。燃焼ガスが二重筒体６０の燃焼ガス排出路６８を流動する際には、二重筒体６０のガス流入路６６を酸素含有ガスが流動し、燃焼ガスと酸素含有ガスとの間で熱交換が行われる。そしてまた、燃焼ガスが第一の流路４８をジグザグ状に流動せしめられる際には、酸素含有ガスが第二の流路５０をジグザグ状に流動せしめられる。かくして燃焼ガスと酸素含有ガスとの間で効果的に熱交換されて酸素含有ガスが余熱される。酸素含有ガスは上部ガス室１６、連通ガス室１８及び下部ガス室１４を通る際にも発電・燃焼室１２内の高温によって加熱される。 Combustion gas generated in the power generation / combustion chamber 12 flows into the first flow path 48 from the inflow opening 56 formed in the heat exchanger 30 and flows through the first flow path 48 extending in a zigzag manner. After that, it is discharged through the combustion gas discharge path 68 of the double cylinder 60. When the combustion gas flows through the combustion gas discharge path 68 of the double cylinder 60, the oxygen-containing gas flows through the gas inflow path 66 of the double cylinder 60, and heat is generated between the combustion gas and the oxygen-containing gas. Exchange is performed. Further, when the combustion gas is caused to flow in the first flow path 48 in a zigzag manner, the oxygen-containing gas is caused to flow in the second flow path 50 in a zigzag manner. Thus, heat is effectively exchanged between the combustion gas and the oxygen-containing gas, and the oxygen-containing gas is preheated. The oxygen-containing gas is heated by the high temperature in the power generation / combustion chamber 12 even when passing through the upper gas chamber 16, the communication gas chamber 18, and the lower gas chamber 14.

図６は、本発明の他の形態を示すもので、この形態では、燃料電池の発電反応に使用されなかった余剰の酸素含有ガスと燃料ガスを回収する形態である。図１と同様の構成のものは同一符号を用いている。   FIG. 6 shows another embodiment of the present invention. In this embodiment, excess oxygen-containing gas and fuel gas that have not been used for the power generation reaction of the fuel cell are recovered. Components having the same configuration as in FIG. 1 use the same reference numerals.

図6において、セルスタック２４ａ〜２４ｄの上部に仕切板７１が設けられており、この仕切板７１によりハウジング２の内部が上下に仕切られている。即ち、仕切板７１により燃料ガス室７３と酸素含有ガス室７５に仕切られ、燃料電池セル内を通過し、反応に用いられなかった余剰の燃料ガスは燃料ガス室７３内に、燃料電池セル間を通過し、反応に用いられなかった余剰の酸素含有ガスは酸素含有ガス室７５にそれぞれ収容されている。   In FIG. 6, a partition plate 71 is provided above the cell stacks 24 a to 24 d, and the interior of the housing 2 is partitioned vertically by this partition plate 71. That is, the partition plate 71 divides the fuel gas chamber 73 and the oxygen-containing gas chamber 75, and surplus fuel gas that has passed through the fuel cell and not used for the reaction enters the fuel gas chamber 73 between the fuel cells. Excess oxygen-containing gas that has not passed through the reaction and is not used in the reaction is accommodated in the oxygen-containing gas chamber 75.

余剰の燃料ガスは、断熱材３１の上方、熱交換器３０の流入開口５６を介して、左側の熱交換器３０の第一の流路４８に流入し、後述するように、第二の流路５０にハウジング外から供給された酸素含有ガスと熱交換し、排出管７９を介して外部に排出される。一方、余剰の酸素含有ガスは、酸素含有ガス室７５に開口し、右側の熱交換器３０の流入開口５６に接続される余剰酸素含有ガス排出流路７７を介して、右側の熱交換器３０の第一の流路４８に流入し、後述するように、第二の流路５０にハウジング外から供給された酸素含有ガスと熱交換し、外部に排出される。   The surplus fuel gas flows into the first flow path 48 of the left heat exchanger 30 through the inflow opening 56 of the heat exchanger 30 above the heat insulating material 31 and, as will be described later, Heat is exchanged with the oxygen-containing gas supplied from the outside of the housing to the passage 50 and is discharged to the outside through the discharge pipe 79. On the other hand, the surplus oxygen-containing gas opens into the oxygen-containing gas chamber 75 and passes through the surplus oxygen-containing gas discharge channel 77 connected to the inflow opening 56 of the right heat exchanger 30. As will be described later, heat exchange is performed with the oxygen-containing gas supplied from the outside of the housing to the second flow path 50 and is discharged to the outside.

図６の熱交換器３０は、上記形態と略同一であるが、この熱交換器３０では、図７に示すように、第一の流路４８の上部に排出管７９が連結され、余剰の燃料ガスが第一の流路４８を下方にジグザグ状に流通した後、排出管７９を介して上方に排出されるように構成されている。一方、第二の流路５０の下面に供給管８１が連結され、外部からの新鮮な酸素含有ガスが供給管８１から第二の流路５０内の下部に供給され、第二の流路５０をジグザグ状に流通した後、第二の流路５０上面に形成された流出開口５８を介して上方の上部ガス室１６に供給されるように構成されている。   Although the heat exchanger 30 of FIG. 6 is substantially the same as the said form, in this heat exchanger 30, the exhaust pipe 79 is connected to the upper part of the 1st flow path 48, as shown in FIG. The fuel gas is configured to be discharged upward through a discharge pipe 79 after flowing in a zigzag manner downward through the first flow path 48. On the other hand, a supply pipe 81 is connected to the lower surface of the second flow path 50, and fresh oxygen-containing gas from the outside is supplied from the supply pipe 81 to the lower part in the second flow path 50, so that the second flow path 50 Is circulated in a zigzag shape, and then supplied to the upper gas chamber 16 above through the outflow opening 58 formed on the upper surface of the second flow path 50.

第一、第二の流路４８、５０にそれぞれ連通する排出管７９、供給管８１を異なる位置に、図６では、熱交換器３０の上下に設けたので、例えば、排出管７９に排ガスを所定位置に導出する管を容易に接続でき、図１に示す場合よりも設計の自由度が大きくなる。尚、図１においても、図７に示すような排出管７９、供給管８１を有する熱交換器を用いても良いことは勿論である。   The exhaust pipe 79 and the supply pipe 81 communicating with the first and second flow paths 48 and 50, respectively, are provided at different positions in FIG. 6 above and below the heat exchanger 30. A pipe leading to a predetermined position can be easily connected, and the degree of freedom in design is greater than that shown in FIG. In FIG. 1, it is needless to say that a heat exchanger having a discharge pipe 79 and a supply pipe 81 as shown in FIG. 7 may be used.

以上のように構成された燃料電池組立体では、左側の熱交換器３０において、燃料電池セルの反応に用いられなかった高温の余剰の燃料ガスが、新鮮な外部の酸素含有ガスと熱交換を行い、右側の熱交換器３０において、燃料電池セルの反応に用いられなかった高温の余剰の酸素含有ガスが、新鮮な外部の酸素含有ガスと熱交換を行い、ハウジング２外に排出される高温の排ガスを用いて、外部からの低温の酸素含有ガスを加熱できる。熱交換された余剰の燃料ガスと余剰の酸素含有ガスは外部に導出され、それぞれ回収され、再利用される。   In the fuel cell assembly configured as described above, in the heat exchanger 30 on the left side, the high-temperature surplus fuel gas that has not been used for the reaction of the fuel cell exchanges heat with fresh external oxygen-containing gas. In the right heat exchanger 30, the high-temperature surplus oxygen-containing gas that has not been used for the reaction of the fuel cells exchanges heat with fresh external oxygen-containing gas, and is discharged out of the housing 2 The low-temperature oxygen-containing gas from the outside can be heated using the exhaust gas. The surplus fuel gas and the surplus oxygen-containing gas that have undergone heat exchange are led out to the outside, and each is recovered and reused.

尚、図６では、余剰の燃料ガスと余剰の酸素含有ガスの両者を用いて、外部からの新鮮な酸素含有ガスと熱交換した例について説明したが、本願発明では、余剰の酸素含有ガスのみ、または余剰の燃料ガスのみを用いて、左右の熱交換器で熱交換してもよい。この場合には、燃料電池組立体の構造を簡略化できる。   In addition, in FIG. 6, although the example which heat-exchanged with the fresh oxygen-containing gas from the outside using both the excess fuel gas and the excess oxygen-containing gas was demonstrated, in this invention, only an excess oxygen-containing gas is demonstrated. Alternatively, heat may be exchanged with the left and right heat exchangers using only excess fuel gas. In this case, the structure of the fuel cell assembly can be simplified.

図８は、本発明のさらに他の形態を示すもので、この形態では、図１の形態において、左右の側面に燃焼ガスと酸素含有ガスの熱交換器を設けるのみならず、背面にも、燃焼ガスと水との熱交換器を設けた形態である。図１と同様の構成のものは同一符号を用いている。   FIG. 8 shows still another embodiment of the present invention. In this embodiment, in the embodiment of FIG. 1, not only a heat exchanger for combustion gas and oxygen-containing gas is provided on the left and right side surfaces, but also on the back surface. This is a mode in which a heat exchanger for combustion gas and water is provided. Components having the same configuration as in FIG. 1 use the same reference numerals.

図８（ａ）において、ハウジングの左右の側面には燃焼ガスと酸素含有ガスの熱交換器３０が設けられ、ハウジングの背面には燃焼ガスと水の熱交換器９０が設けられている。この熱交換器９０は、熱交換器３０と同様の構造を有しており、第一の流路には燃焼ガス、第二の流路には水が供給され、熱交換をする。そして、熱交換器９０の第一流路には、熱交換器３０の第一流路を通過した燃焼ガスが供給されるように、熱交換器９０の第一流路には、熱交換器３０の第一流路が接続されている。このような燃料電池組立体では、熱交換器３０で熱交換し、酸素含有ガスの加熱に充分寄与した残りの燃焼ガスが熱交換器９０の第一流路に流入し、残りの燃焼ガスの熱エネルギーにより水を加熱できる。   In FIG. 8A, a heat exchanger 30 for combustion gas and oxygen-containing gas is provided on the left and right side surfaces of the housing, and a heat exchanger 90 for combustion gas and water is provided on the back surface of the housing. The heat exchanger 90 has the same structure as that of the heat exchanger 30, and heat is exchanged by supplying combustion gas to the first channel and water to the second channel. The first flow path of the heat exchanger 30 is supplied to the first flow path of the heat exchanger 90 so that the combustion gas that has passed through the first flow path of the heat exchanger 30 is supplied to the first flow path of the heat exchanger 90. One flow path is connected. In such a fuel cell assembly, the heat exchange is performed by the heat exchanger 30 and the remaining combustion gas that has sufficiently contributed to the heating of the oxygen-containing gas flows into the first flow path of the heat exchanger 90 and the heat of the remaining combustion gas. Water can be heated by energy.

図８（ｂ）は、ハウジングの左右の側面には燃焼ガスと酸素含有ガスの熱交換器３０が設けられ、ハウジングの背面には燃焼ガスと水の熱交換器９１が設けられており、熱交換器９１は熱交換器３０と同一構造を有しており、熱交換器９１の第一の流路にも、燃焼ガスが直接流入するように構成されている。このような構造では、水を充分に加熱できる。加熱された水は、外部に導出される。言わば熱交換器９０、９１は給湯器の役割を担っている。図８において、矢印は燃焼ガスの熱交換器への流入を示す。   In FIG. 8B, a heat exchanger 30 for combustion gas and oxygen-containing gas is provided on the left and right side surfaces of the housing, and a heat exchanger 91 for combustion gas and water is provided on the back surface of the housing. The exchanger 91 has the same structure as the heat exchanger 30, and is configured such that the combustion gas directly flows into the first flow path of the heat exchanger 91. In such a structure, water can be sufficiently heated. The heated water is led out to the outside. In other words, the heat exchangers 90 and 91 serve as a water heater. In FIG. 8, the arrows indicate the inflow of combustion gas into the heat exchanger.

尚、熱交換器９０、９１は、図１に示すような構造に限定されるものではなく、例えば、薄い厚みの箱状の排ガス収容空間中に配管を蛇行させて形成し、配管内に水を供給させるようにしてもよい。この場合、構造を簡略化できる。   Note that the heat exchangers 90 and 91 are not limited to the structure shown in FIG. 1. For example, the heat exchangers 90 and 91 are formed by meandering pipes in a thin box-shaped exhaust gas storage space, and water in the pipes. May be supplied. In this case, the structure can be simplified.

図９は、本発明のさらに他の形態を示すもので、この形態では、図１の形態において、熱交換器を三層構造とした形態である。この熱交換器９５は板状をなしており、厚み方向に３層の流路が積層された構造を有している。そして、内側から酸素含有ガスが流通する第一の流路９６、燃焼ガスが流通する第二の流路９７、水が流通する第三の流路９８とされている。   FIG. 9 shows still another embodiment of the present invention. In this embodiment, the heat exchanger has a three-layer structure in the embodiment of FIG. The heat exchanger 95 has a plate shape and has a structure in which three layers of flow paths are stacked in the thickness direction. A first flow path 96 through which oxygen-containing gas flows from the inside, a second flow path 97 through which combustion gas flows, and a third flow path 98 through which water flows.

このような形態では、燃焼ガスが流通する第二の流路９７が、第一の流路９６と第三の流路９８の間に存在するため、燃焼ガスにより酸素含有ガスの加熱を行うことができるとともに、水の加熱を行うことができる。しかも酸素含有ガスが流通する流路９６が最も内側であるため、酸素含有ガスを充分に加熱できる。さらに、水が流通する第三の流路９８が最も外側に位置しているため、ハウジングの外面を低温化できる。   In such a configuration, since the second flow path 97 through which the combustion gas flows exists between the first flow path 96 and the third flow path 98, the oxygen-containing gas is heated by the combustion gas. And water can be heated. Moreover, since the flow path 96 through which the oxygen-containing gas flows is the innermost side, the oxygen-containing gas can be sufficiently heated. Furthermore, since the third flow path 98 through which water flows is located on the outermost side, the outer surface of the housing can be cooled.

以上添付図面を参照して本発明に従って構成された燃料電池組立体の好適実施形態について詳細に説明したが、本発明はかかる実施形態に限定されるものではなく、本発明の範囲から逸脱することなく種々の変形乃至修正が可能であることは多言を要しない。例えば、図示の実施形態においては、ハウジング２の右側面と左側面とに熱交換器を配設しているが、所望ならばハウジング２の上面、下面、前面にも熱交換器を配設することができる。   The preferred embodiments of the fuel cell assembly configured according to the present invention have been described in detail with reference to the accompanying drawings. However, the present invention is not limited to such embodiments and departs from the scope of the present invention. It is not necessary to say variously that various modifications and corrections are possible. For example, in the illustrated embodiment, heat exchangers are disposed on the right side surface and the left side surface of the housing 2, but heat exchangers are also disposed on the upper surface, the lower surface, and the front surface of the housing 2 if desired. be able to.

また、図示の実施形態においては、酸素含有ガスを熱交換器を通して流通せしめているが、所望ならば酸素含有ガスに代えて或いはこれに加えて燃料ガスを熱交換器を通して流通せしめて余熱することもできる。   In the illustrated embodiment, the oxygen-containing gas is circulated through the heat exchanger. However, if desired, the fuel gas may be circulated through the heat exchanger instead of or in addition to the oxygen-containing gas for preheating. You can also.

更に、図示の実施形態においては上部ガス室１６に流入せしめた酸素含有ガスを連通ガス室１８、下部ガス室１４及び中空ガス噴出板２１を介してセルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄに供給しているが、所望ならば連通ガス室１８、下部ガス室１４及び中空ガス噴出板２１に代えて、上部ガス室１６から下方にセルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄ間に垂下する複数個の酸素含有ガス供給管を配設し、上部ガス室１６から酸素含有ガス供給管に酸素含有ガスを流動せしめ、酸素含有ガス供給管の下部に配設した噴出孔から酸素含有ガスを噴出せしめてセルスタック２４ａ、２４ｂ、２４ｃ及び２４ｄに供給することもできる。   Further, in the illustrated embodiment, the oxygen-containing gas that has flowed into the upper gas chamber 16 is supplied to the cell stacks 24a, 24b, 24c, and 24d via the communication gas chamber 18, the lower gas chamber 14, and the hollow gas ejection plate 21. However, if desired, instead of the communication gas chamber 18, the lower gas chamber 14 and the hollow gas ejection plate 21, a plurality of oxygens drooping downward from the upper gas chamber 16 between the cell stacks 24 a, 24 b, 24 c and 24 d. A cell stack in which an oxygen-containing gas is caused to flow from an upper gas chamber 16 to an oxygen-containing gas supply tube, and an oxygen-containing gas is jetted from an ejection hole provided at a lower portion of the oxygen-containing gas supply tube. It can also be supplied to 24a, 24b, 24c and 24d.

また、本発明では、対向する二側面に、酸素含有ガスと燃焼ガスとの熱交換器３０を設けた例について説明したが、対向する二側面に水と燃焼ガスとの熱交換器９０を設けても良い。   In the present invention, the example in which the heat exchanger 30 for the oxygen-containing gas and the combustion gas is provided on the two opposite side surfaces has been described. However, the heat exchanger 90 for water and the combustion gas is provided on the two opposite side surfaces. May be.

本発明に従って構成された燃料電池組立体の好適実施形態を示す断面図。1 is a cross-sectional view illustrating a preferred embodiment of a fuel cell assembly configured in accordance with the present invention. 図１の燃料電池組立体を、一部を省略して示す斜面図。FIG. 2 is a perspective view showing the fuel cell assembly of FIG. 1 with a part thereof omitted. 図１の燃料電池組立体における熱交換器及び二重筒体を、一部を切り欠いて示す斜面図。FIG. 2 is a perspective view showing a heat exchanger and a double cylinder in the fuel cell assembly of FIG. 図１の燃料電池組立体における熱交換器に形成されている第一の流路及び二重筒体に形成されている燃焼ガス排出路を示す簡略図。FIG. 2 is a simplified diagram illustrating a first flow path formed in a heat exchanger and a combustion gas discharge path formed in a double cylinder in the fuel cell assembly of FIG. 1. 図１の燃料電池組立体における熱交換器に形成されている第二の流路及び二重筒体に形成されているガス流入路を示す簡略図。The simplified diagram which shows the gas inflow path currently formed in the 2nd flow path and the double cylinder formed in the heat exchanger in the fuel cell assembly of FIG. 余剰の酸素含有ガス及び余剰の燃料ガスを回収するタイプの燃料電池組立体を示す断面図。Sectional drawing which shows the fuel cell assembly of the type which collect | recovers surplus oxygen containing gas and surplus fuel gas. 排ガスとして余剰の酸素含有ガス及び余剰の燃料ガスを用いた熱交換器を示す断面図。Sectional drawing which shows the heat exchanger using the surplus oxygen containing gas and surplus fuel gas as waste gas. 燃焼ガスと酸素含有ガスとを熱交換する熱交換器、及び水と燃焼ガスとを熱交換する熱交換器を具備する燃料電池組立体の平面図。The top view of the fuel cell assembly which comprises the heat exchanger which heat-exchanges combustion gas and oxygen-containing gas, and the heat exchanger which heat-exchanges water and combustion gas. ３層構造の熱交換器を示す断面図。Sectional drawing which shows the heat exchanger of 3 layer structure.

符号の説明Explanation of symbols

２：ハウジング
１２：発電・燃焼室
１４：下部ガス室
１６：上部ガス室
１８：連通ガス室
２４ａ、２４ｂ、２４ｃ及び２４ｄ：セルスタック
２６ａ、２６ｂ、２６ｃ及び２６ｄ：改質手段
３０、９０、９１：熱交換器
４８、９６：第一の流路
５０、９７：第二の流路
９８：第三の流路 2: Housing 12: Power generation / combustion chamber 14: Lower gas chamber 16: Upper gas chamber 18: Communication gas chamber 24a, 24b, 24c and 24d: Cell stacks 26a, 26b, 26c and 26d: Reforming means 30, 90, 91 : Heat exchanger 48, 96: first flow path 50, 97: second flow path 98: third flow path

Claims (16)

ハウジングと、該ハウジング内に配設された発電手段とを備え、該発電手段に燃料ガス及び酸素含有ガスを供給して発電させ、前記ハウジングから排ガスが排出される燃料電池組立体において、前記ハウジングの少なくとも１面に第一の流路と第二の流路を備えた板状の熱交換器を配設するとともに、前記排ガスを前記熱交換器の第一の流路を通して前記ハウジングから排出し、前記排ガスと熱交換する流体が前記熱交換器の第二の流路を流れることを特徴とする燃料電池組立体。 In a fuel cell assembly, comprising: a housing; and power generation means disposed in the housing, wherein the power generation means is supplied with fuel gas and an oxygen-containing gas to generate power, and exhaust gas is discharged from the housing. A plate-like heat exchanger having a first flow path and a second flow path is disposed on at least one surface of the heat exchanger, and the exhaust gas is discharged from the housing through the first flow path of the heat exchanger. A fuel cell assembly, wherein a fluid that exchanges heat with the exhaust gas flows through a second flow path of the heat exchanger. 発電・燃焼室を規定するハウジングと、該ハウジング内に配設された発電・燃焼手段とを備え、該発電・燃焼手段に燃料ガス及び酸素含有ガスを供給し、前記発電・燃焼室内に生成された燃焼ガスを排ガスとして前記熱交換器の第一の流路を通して前記発電・燃焼室から排出し、前記酸素含有ガスと前記燃料ガスとのいずれか一方を前記熱交換器の第二の流路を通して前記発電・燃焼手段に供給することを特徴とする請求項1記載の燃料電池組立体。 A housing for defining a power generation / combustion chamber; and a power generation / combustion means disposed in the housing; and a fuel gas and an oxygen-containing gas are supplied to the power generation / combustion means and are generated in the power generation / combustion chamber. The combustion gas discharged as exhaust gas is discharged from the power generation / combustion chamber through the first flow path of the heat exchanger, and either the oxygen-containing gas or the fuel gas is discharged to the second flow path of the heat exchanger. 2. The fuel cell assembly according to claim 1, wherein the fuel cell assembly is supplied to the power generation / combustion means. 発電手段に燃料ガス及び酸素含有ガスを供給し、余剰の燃料ガス及び／又は余剰の酸素含有ガスを排ガスとして熱交換器の第一の流路を通して前記ハウジングから回収するとともに、前記ハウジング外から新たな酸素含有ガスと燃料ガスとのいずれか一方を前記熱交換器の第二の流路を通してハウジング内に供給することを特徴とする請求項１記載の燃料電池組立体。 Fuel gas and oxygen-containing gas are supplied to the power generation means, and surplus fuel gas and / or surplus oxygen-containing gas is recovered as exhaust gas from the housing through the first flow path of the heat exchanger, and newly generated from outside the housing. 2. The fuel cell assembly according to claim 1, wherein any one of oxygen-containing gas and fuel gas is supplied into the housing through the second flow path of the heat exchanger. 第一の流路の外側に第二の流路が形成されていることを特徴とする請求項1乃至３のうちいずれかに記載の燃料電池組立体。 The fuel cell assembly according to any one of claims 1 to 3, wherein a second channel is formed outside the first channel. 排ガスと熱交換する流体が水であることを特徴とする請求項1記載の燃料電池組立体。 2. The fuel cell assembly according to claim 1, wherein the fluid that exchanges heat with the exhaust gas is water. 熱交換器は、水が流れる第三の流路を有しており、該第三の流路が最も外側に形成されていることを特徴とする請求項1乃至３のうちいずれかに記載の燃料電池組立体。 The heat exchanger has a third channel through which water flows, and the third channel is formed on the outermost side. Fuel cell assembly. 熱交換器は、第二の流路の外側に第一の流路が形成され、該第一の流路の外側に、第三の流路が形成されていることを特徴とする請求項６記載の燃料電池組立体。 The heat exchanger includes a first flow path formed outside the second flow path, and a third flow path formed outside the first flow path. A fuel cell assembly as described. ハウジングは実質上鉛直に延在する平坦な両側面を有し、前記熱交換器は平板状であり両側面の各々に配設されていることを特徴とする請求項１乃至７のうちいずれかに記載の燃料電池組立体。 8. The housing according to claim 1, wherein the housing has flat side surfaces extending substantially vertically, and the heat exchanger is flat and disposed on each side surface. A fuel cell assembly according to claim 1. ハウジングの対向する２面と、該２面間の１面に熱交換器が配設されており、前記２面間の１面に配設された熱交換器は、排ガスと水を熱交換することを特徴とする請求項１乃至８のうちいずれかに記載の燃料電池組立体。 A heat exchanger is disposed on two opposing surfaces of the housing and one surface between the two surfaces, and the heat exchanger disposed on one surface between the two surfaces exchanges heat between exhaust gas and water. 9. The fuel cell assembly according to claim 1, wherein the fuel cell assembly is a fuel cell assembly. 排ガスは、ハウジングの対向する２面に配設された熱交換器の第一の流路を流れた後、前記２面間の１面に配設された熱交換器の第一の流路を流れることを特徴とする請求項９記載の燃料電池組立体。 After the exhaust gas flows through the first flow path of the heat exchanger disposed on the two opposite surfaces of the housing, the exhaust gas flows through the first flow path of the heat exchanger disposed on one surface between the two surfaces. The fuel cell assembly according to claim 9, wherein the fuel cell assembly flows. 熱交換器における第一の流路と第二の流路とは面の厚さ方向に積層されており、該第一の流路と該第二の流路とはジグザグ状に延在せしめられている対向流路であることを特徴とする請求項１乃至１０のうちいずれかに記載の燃料電池組立体。 The first flow path and the second flow path in the heat exchanger are stacked in the thickness direction of the surface, and the first flow path and the second flow path are extended in a zigzag shape. The fuel cell assembly according to claim 1, wherein the fuel cell assembly is an opposed flow path. 熱交換器が、排ガス収容空間中に水が流れる配管を蛇行させて形成されていることを特徴とする請求項５乃至７のうちいずれかに記載の燃料電池組立体。 The fuel cell assembly according to any one of claims 5 to 7, wherein the heat exchanger is formed by meandering a pipe through which water flows in the exhaust gas accommodating space. ハウジングの下端部に位置する下部ガス室、前記ハウジングの上端部に位置する上部ガス室、及び前記ハウジング内を上下方向に延在して該上部ガス室と該下部ガス室とを連通せしめる連通ガス室が配設されており、第二の流路は熱交換器の下端に配設された流入口と前記熱交換器の上端に配設され前記上部ガス室に続く流出口とを有し、前記酸素含有ガスと前記燃料ガスとのいずれか一方は前記流入口から前記第二の流路に流入せしめられ、前記第二の流路から前記上部ガス室、前記連通ガス室及び前記下部ガス室を通って発電手段に供給されることを特徴とする請求項１乃至１２のうちいずれかに記載の燃料電池組立体。 A lower gas chamber located at the lower end of the housing, an upper gas chamber located at the upper end of the housing, and a communication gas extending in the vertical direction in the housing to communicate the upper gas chamber and the lower gas chamber A second flow path has an inlet disposed at the lower end of the heat exchanger and an outlet disposed at the upper end of the heat exchanger and continuing to the upper gas chamber; Either one of the oxygen-containing gas and the fuel gas is caused to flow from the inlet into the second flow path, and from the second flow path, the upper gas chamber, the communication gas chamber, and the lower gas chamber The fuel cell assembly according to any one of claims 1 to 12, wherein the fuel cell assembly is supplied to the power generation means. ハウジング内には改質手段が配設されており、燃料ガスは前記改質手段を通して発電手段に供給され、酸素含有ガスは第二の流路を通して前記発電手段に供給されることを特徴とする請求項１乃至１３のうちいずれかに記載の燃料電池組立体。 Reforming means is disposed in the housing, fuel gas is supplied to the power generation means through the reforming means, and oxygen-containing gas is supplied to the power generation means through a second flow path. The fuel cell assembly according to any one of claims 1 to 13. 排ガスがハウジングの上方又は下方に排出され、該排ガスと熱交換する流体が、排ガスと反対側から熱交換器に供給されることを特徴とする請求項１乃至１４のうちいずれかに記載の燃料電池組立体。 The fuel according to any one of claims 1 to 14, wherein the exhaust gas is discharged above or below the housing, and the fluid that exchanges heat with the exhaust gas is supplied to the heat exchanger from the side opposite to the exhaust gas. Battery assembly. 排ガスと熱交換する流体が水の場合、ハウジング外から熱交換器に供給され、ハウジング外に排出されることを特徴とする請求項1乃至１５のうちいずれかに記載の燃料電池組立体。 16. The fuel cell assembly according to claim 1, wherein when the fluid exchanging heat with the exhaust gas is water, the fuel cell assembly is supplied to the heat exchanger from outside the housing and discharged to the outside of the housing.
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JP2009224041A (en) * 2008-03-13 2009-10-01 Hitachi Ltd Solid oxide fuel cell power generation system
JP2011029074A (en) * 2009-07-28 2011-02-10 Toto Ltd Fuel cell module
EP2608306A1 (en) 2011-12-20 2013-06-26 Aisin Seiki Kabushiki Kaisha Fuel cell apparatus
JP2012089514A (en) * 2011-12-21 2012-05-10 Kyocera Corp Exhaust heat recovery system in solid oxide fuel cell
JP2013168303A (en) * 2012-02-16 2013-08-29 Osaka Gas Co Ltd Solid oxide fuel cell
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JP2016071961A (en) * 2014-09-26 2016-05-09 Toto株式会社 Solid oxide fuel cell device
JP2018056129A (en) * 2016-01-23 2018-04-05 京セラ株式会社 Fuel cell device
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JP2016058406A (en) * 2016-01-29 2016-04-21 大阪瓦斯株式会社 Solid oxide fuel battery
JP2019054002A (en) * 2016-06-20 2019-04-04 京セラ株式会社 Fuel cell module and fuel cell device
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