JP6223254B2

JP6223254B2 - Fuel cell device

Info

Publication number: JP6223254B2
Application number: JP2014067340A
Authority: JP
Inventors: 泰一郎坂本; 斎藤　健; 健斎藤; 大白▲濱▼; 陽祐赤木; 嘉久和　孝; 孝嘉久和; 廣瀬　達也; 達也廣瀬
Original assignee: Toto Ltd; Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Toto Ltd; Panasonic Corp; Panasonic Holdings Corp
Priority date: 2014-03-28
Filing date: 2014-03-28
Publication date: 2017-11-01
Anticipated expiration: 2034-03-28
Also published as: JP2015191747A

Description

本発明は、燃料電池装置に関する。特に本発明は、燃料電池筐体上に被加熱部を設けた燃料電池装置に関する。 The present invention relates to a fuel cell device. In particular, the present invention relates to a fuel cell device in which a heated portion is provided on a fuel cell casing.

近年、次世代のエネルギー供給源として、燃料ガスと酸素含有ガスとを用いた発電反応によって電力を得ることができる燃料電池の研究開発が盛んである。燃料電池には高分子電解質形燃料電池（ＰＥＦＣ）やリン酸化形燃料電池（ＰＡＦＣ）、固体酸化物形燃料電池（ＳＯＦＣ）、溶融炭酸塩形燃料電池（ＭＣＦＣ）が挙げられる。この燃料電池を稼動するために燃料電池装置は、原料を改質して燃料電池に改質した燃料ガスを供給するための改質器、改質器に供給する水蒸気を生成するための蒸発器、原料の硫黄成分を予め除去するための脱硫器、燃料電池に供給する発電用の酸素含有ガスを予熱するための熱交換器など、加熱することによって機能する被加熱部を有する。例えば、脱硫器や特許文献１や特許文献２に記載の水添脱硫器などがある。このような被加熱部は、燃料電池により生成された高温の排気ガスを用いて加熱されることが効率的である。 In recent years, as a next-generation energy supply source, research and development of a fuel cell capable of obtaining electric power by a power generation reaction using a fuel gas and an oxygen-containing gas have been actively conducted. Examples of the fuel cell include a polymer electrolyte fuel cell (PEFC), a phosphorylated fuel cell (PAFC), a solid oxide fuel cell (SOFC), and a molten carbonate fuel cell (MCFC). In order to operate this fuel cell, the fuel cell device is composed of a reformer for reforming the raw material and supplying the reformed fuel gas to the fuel cell, and an evaporator for generating water vapor to be supplied to the reformer And a heated part that functions by heating, such as a desulfurizer for removing sulfur components of the raw material in advance, and a heat exchanger for preheating the oxygen-containing gas for power generation supplied to the fuel cell. For example, there are a desulfurizer and a hydrodesulfurizer described in Patent Document 1 and Patent Document 2. It is efficient that such a heated portion is heated using high-temperature exhaust gas generated by the fuel cell.

特開平１−２７５６９７号公報Japanese Patent Laid-Open No. 1-275697 特開２０１３−２３９４０４号公報JP 2013-239404 A

このような脱硫器等の被加熱部は燃料電池の排気ガスを用いて加熱されるため、燃料電池の筐体上に配置されることが好ましい。被加熱部を燃料電池の筐体上に設置する場合、固定部材を介して燃料電池筐体と被加熱部筐体とを、ボルトや溶接等の手段によって固定する方法がある。 Such a heated part such as a desulfurizer is heated by using the exhaust gas of the fuel cell, and thus is preferably disposed on the casing of the fuel cell. When the heated part is installed on the casing of the fuel cell, there is a method of fixing the fuel cell casing and the heated part casing by means such as bolts or welding via a fixing member.

しかしこの方法では、一般に燃料電池筐体と被加熱部筐体とは温度分布が異なるため、それぞれの熱膨張量が異なり、その結果、燃料電池装置の起動時や運転時に熱応力が発生して破損するおそれがあった。 However, in this method, since the temperature distribution of the fuel cell casing and the heated section casing is generally different, the respective thermal expansion amounts are different, and as a result, thermal stress is generated during startup and operation of the fuel cell apparatus. There was a risk of damage.

また、燃料電池筐体と被加熱部筐体とを上記のように固定する際に、固定部材に筐体と同じ金属部材、すなわち熱伝導性の高い伝熱部材で固定することが一般的である。しかしこの場合、伝熱部材を介して燃料電池筐体から被加熱部筐体に熱移動が発生してしまうため、燃料電池の放熱を促してしまうという課題があった。 Further, when the fuel cell casing and the heated section casing are fixed as described above, the fixing member is generally fixed with the same metal member as the casing, that is, a heat transfer member having high thermal conductivity. is there. However, in this case, heat transfer is generated from the fuel cell casing to the heated section casing via the heat transfer member, which causes a problem of promoting heat dissipation of the fuel cell.

本発明は、上記課題に鑑みてなされたものであり、その目的は、燃料電池筐体の放熱を抑えることによって、燃料電池筐体内の温度を高温に維持し、また燃料電池筐体内の温度分布を均一に近づけるとともに、燃料電池筐体の上方の被加熱部筐体を支持すること可能にした燃料電池装置を提供することにある。 The present invention has been made in view of the above problems, and its object is to maintain the temperature in the fuel cell casing at a high temperature by suppressing heat dissipation of the fuel cell casing, and to distribute the temperature in the fuel cell casing. It is to provide a fuel cell device capable of supporting the heated portion casing above the fuel cell casing.

また、燃料電池筐体と被加熱部筐体との温度分布の違いによる熱膨張量の違いから生じる熱応力の影響を抑制する燃料電池装置を提供することにある。 Another object of the present invention is to provide a fuel cell device that suppresses the influence of thermal stress caused by the difference in thermal expansion due to the difference in temperature distribution between the fuel cell casing and the heated section casing.

本発明に係る燃料電池装置は、原料と発電用空気との電気化学反応により発電する燃料電池を内包する燃料電池筐体と、該燃料電池筐体から排気された排気ガスの有する熱により所定の温度に加熱される被加熱部を有する被加熱部筐体と、該燃料電池筐体と該被加熱部筐体との間に設けられた断熱層と、該排気ガスを該被加熱部に導く排気管と、を備えた燃料電池装置であって、該排気管は、対向する該燃料電池筐体と該被加熱部筐体との間の運転時の温度差が最も低い部分を繋いで配置され、該燃料電池筐体と該燃料電池筐体の上方に設けられた該被加熱部筐体とを固定している。 A fuel cell device according to the present invention includes a fuel cell housing containing a fuel cell that generates power by an electrochemical reaction between a raw material and power generation air, and a predetermined amount of heat generated by exhaust gas exhausted from the fuel cell housing. A heated portion housing having a heated portion heated to a temperature, a heat insulating layer provided between the fuel cell housing and the heated portion housing, and introducing the exhaust gas to the heated portion An exhaust pipe, wherein the exhaust pipe is arranged by connecting the portions with the lowest temperature difference during operation between the opposing fuel cell casing and the heated section casing The fuel cell casing and the heated part casing provided above the fuel cell casing are fixed.

本発明に係る燃料電池装置は、燃料電池筐体の放熱を抑えることによって、燃料電池筐体内の温度を高温に維持し、また燃料電池筐体内の温度分布を均一に近づけるとともに、燃料電池筐体の上方の被加熱部筐体を支持することができる。 The fuel cell device according to the present invention maintains the temperature in the fuel cell casing at a high temperature by suppressing heat dissipation of the fuel cell casing, and makes the temperature distribution in the fuel cell casing close to uniform, and the fuel cell casing. The heated part casing above can be supported.

また、燃料電池筐体と被加熱部筐体との温度分布の違いによる熱膨張量の違いから生じる熱応力の影響を抑制することができる。 Further, it is possible to suppress the influence of thermal stress resulting from the difference in thermal expansion due to the difference in temperature distribution between the fuel cell casing and the heated section casing.

本発明に係る燃料電池装置の縦断面の構成を示す模式図である。It is a schematic diagram which shows the structure of the longitudinal cross-section of the fuel cell apparatus which concerns on this invention. 本発明に係る燃料電池装置の縦断面の構成を示す模式図である。It is a schematic diagram which shows the structure of the longitudinal cross-section of the fuel cell apparatus which concerns on this invention. 本発明に係る連接部の縦断面の構成を示す模式図である。It is a schematic diagram which shows the structure of the longitudinal cross-section of the connection part which concerns on this invention. 本発明に係る連接部の縦断面の構成を示す模式図である。It is a schematic diagram which shows the structure of the longitudinal cross-section of the connection part which concerns on this invention. 本発明に係る筐体の位置と温度との関係を示す模式図である。It is a schematic diagram which shows the relationship between the position of the housing | casing which concerns on this invention, and temperature. 本発明に係る連接部の縦断面の構成を示す模式図である。It is a schematic diagram which shows the structure of the longitudinal cross-section of the connection part which concerns on this invention. 本発明に係る連接部の縦断面の構成を示す模式図である。It is a schematic diagram which shows the structure of the longitudinal cross-section of the connection part which concerns on this invention.

本発明では以下に示す態様を提供する。 The present invention provides the following aspects.

（請求項１／作用効果）
本発明に係る燃料電池装置は、原料と発電用空気との電気化学反応により発電する燃料電池を内包する燃料電池筐体と、該燃料電池筐体から排気された排気ガスの有する熱により所定の温度に加熱される被加熱部を有する被加熱部筐体と、該燃料電池筐体と該被加熱部筐体との間に設けられた断熱層と、該排気ガスを該被加熱部に導く排気管と、を備えた燃料電池装置であって、該排気管は、対向する該燃料電池筐体と該被加熱部筐体との間の運転時の温度差が最も低い部分を繋いで配置され、該燃料電池筐体と該燃料電池筐体の上方に設けられた該被加熱部筐体とを固定している。 (Claim 1 / Effect)
A fuel cell device according to the present invention includes a fuel cell housing containing a fuel cell that generates power by an electrochemical reaction between a raw material and power generation air, and a predetermined amount of heat generated by exhaust gas exhausted from the fuel cell housing. A heated portion housing having a heated portion heated to a temperature, a heat insulating layer provided between the fuel cell housing and the heated portion housing, and introducing the exhaust gas to the heated portion An exhaust pipe, wherein the exhaust pipe is arranged by connecting the portions with the lowest temperature difference during operation between the opposing fuel cell casing and the heated section casing The fuel cell casing and the heated part casing provided above the fuel cell casing are fixed.

燃料電池筐体と被加熱部筐体との固定に燃料電池筐体から排気された排ガスを被加熱部筐体内部へ送る排気管を用い、この排気経路を燃料電池筐体と被加熱部筐体との間で温度差の小さい箇所に設置することで、燃料電池筐体の放熱を抑え、燃料電池筐体内の温度を高温に維持し、また燃料電池筐体内の温度分布を均一に近づけることができる。さらに、燃料電池筐体の上方の被加熱部筐体を支持することができる。 An exhaust pipe that sends exhaust gas exhausted from the fuel cell casing to the inside of the heated section casing is used to fix the fuel cell casing and the heated section casing, and this exhaust path is connected to the fuel cell casing and the heated section casing. By installing it in a place where the temperature difference between it and the body is small, the heat dissipation of the fuel cell casing is suppressed, the temperature inside the fuel cell casing is maintained at a high temperature, and the temperature distribution in the fuel cell casing is made closer to the uniform distribution. Can do. Furthermore, the heated portion casing above the fuel cell casing can be supported.

また、燃料電池筐体と被加熱部筐体との固定を上記の構造とすることで、熱応力による筐体の破損を招く筐体への力学的な影響を抑制することができる。 Further, by fixing the fuel cell casing and the heated section casing to the above-described structure, it is possible to suppress a mechanical influence on the casing that causes the casing to be damaged due to thermal stress.

（請求項２／作用効果）
また、本発明に係る燃料電池装置は、該排気管による固定に加え、該燃料電池筐体と該被加熱部筐体とは、該燃料電池筐体及び該被加熱部筐体を構成する材料よりも熱伝導率の低い材料を構成部材に持つ連接部材によって連接している。 (Claim 2 / effect)
Further, in the fuel cell device according to the present invention, in addition to fixing by the exhaust pipe, the fuel cell casing and the heated portion casing are materials constituting the fuel cell casing and the heated portion casing. It is connected by a connecting member having a material having a lower thermal conductivity than the constituent members.

熱伝導率の低い材料を構成部材に持つ連接部材を用いることで、燃料電池筐体の放熱を抑えることができるため、燃料電池筐体内の温度を高温に維持することができる。また、燃料電池筐体内の温度分布を均一に近づけることができるとともに、燃料電池筐体の上方に被加熱部筐体を支持することができる。 By using a connecting member having a material having low thermal conductivity as a constituent member, heat dissipation of the fuel cell casing can be suppressed, so that the temperature in the fuel cell casing can be maintained at a high temperature. In addition, the temperature distribution in the fuel cell casing can be made uniform, and the heated section casing can be supported above the fuel cell casing.

さらに、被加熱部への熱の流入及び流出を抑えることができるため、燃料電池筐体から排気管を経由して供給される排気ガスの熱によって被加熱部の温度を調整することが容易になる。 Furthermore, since the inflow and outflow of heat to the heated part can be suppressed, it is easy to adjust the temperature of the heated part by the heat of the exhaust gas supplied from the fuel cell casing via the exhaust pipe. Become.

なお、連接部材は後述するように複数の部品（部材）により構成され、これら部品の全てが熱伝導率の低い材料であることが好ましいものの、必ずしもそれに限られず、少なくとも燃料電池筐体と被加熱部筐体とを主体的に支持する機能を有する部材（後述する支持材）に熱伝導率の低い材料を用いればよい。 The connecting member is composed of a plurality of parts (members) as will be described later, and all of these parts are preferably made of a material having low thermal conductivity, but are not necessarily limited thereto, and at least the fuel cell casing and the object to be heated A material having a low thermal conductivity may be used for a member (supporting material described later) having a function of mainly supporting the partial housing.

（請求項３／作用効果）
また、本発明に係る燃料電池装置は、該連接部材は、該燃料電池筐体に固定された第１の留め具、支持材、該被加熱部筐体に固定された第２の留め具、及びこれらを貫通するネジにより構成され、該ネジと該第１の留め具との間、又は該連接部材と該第１の留め具及び該第２の留め具との間には、組み付け時の寸法公差を吸収する隙間が設けられている。 (Claim 3 / effect)
Further, in the fuel cell device according to the present invention, the connecting member includes a first fastener fixed to the fuel cell casing, a support member, a second fastener fixed to the heated portion casing, And a screw passing therethrough, between the screw and the first fastener, or between the connecting member and the first fastener and the second fastener. A gap is provided to absorb dimensional tolerances.

ここで、支持材とは主として燃料電池筐体上に配置された被加熱部を支持する機能を有するものであり、その高さは概略燃料電池筐体と被加熱部筐体との間隔に相当する。これにより、製造上発生する寸法公差を吸収することができる。その結果、取付け位置のずれや隙間の発生による支持強度の低下や、過剰な締め付けによる構成部品の変形の発生を抑制することができる。 Here, the support material mainly has a function of supporting the heated part disposed on the fuel cell casing, and the height thereof is roughly equivalent to the distance between the fuel cell casing and the heated part casing. To do. Thereby, the dimensional tolerance which arises on manufacture can be absorbed. As a result, it is possible to suppress a decrease in the support strength due to the displacement of the mounting position or the generation of a gap, and the occurrence of deformation of the component parts due to excessive tightening.

（請求項４／作用効果）
また、本発明に係る燃料電池装置は、該連接部材による連接は、該排気管が配置された部分よりも、対向する該燃料電池筐体と該被加熱部筐体との間の運転時の温度差が高い部分でなされている。 (Claim 4 / effect)
Further, in the fuel cell device according to the present invention, the connection by the connection member is performed during operation between the fuel cell casing and the heated section casing facing each other rather than the portion where the exhaust pipe is disposed. The temperature difference is high.

これにより、被加熱部への熱の流入及び流出を抑制することができ、燃料電池から排気された排気ガスの熱を用いた被加熱部の温度調整が容易になる。 Thereby, inflow and outflow of heat to the heated portion can be suppressed, and the temperature adjustment of the heated portion using the heat of the exhaust gas exhausted from the fuel cell becomes easy.

（請求項５／作用効果）
また、本発明に係る燃料電池装置は、該被加熱部筐体は、該燃料電池筐体と該被加熱部筐体との相対的な位置が変動可能なように、該燃料電池筐体と該被加熱部筐体との間に設けられた連接部材によって支持されている。 (Claim 5 / effect)
Further, the fuel cell device according to the present invention is configured so that the heated portion casing can change the relative position between the fuel cell casing and the heated portion casing. It is supported by a connecting member provided between the heated portion casing.

燃料電池筐体上に配置された被加熱部筐体を支持するために、上述した排気管による固定とともに、連接部材を用いる。ここで、連接部材により燃料電池筐体と被加熱部筐体とを固定せずに、燃料電池筐体と被加熱部筐体との相対的な位置が変動可能なように支持することによって、燃料電池筐体上に配置された被加熱部筐体の位置に自由度を持たせ、起動・運転時等に生じる熱応力を吸収するとともに支持強度を向上させ、燃料電池の破損を抑制することができる。 In order to support the heated part casing disposed on the fuel cell casing, the connecting member is used together with the fixing by the exhaust pipe described above. Here, by supporting the fuel cell casing and the heated part casing so that the relative positions of the fuel cell casing and the heated part casing can be changed without fixing the fuel cell casing and the heated part casing by the connecting member, Gives freedom to the position of the heated part housing placed on the fuel cell housing, absorbs thermal stress generated during startup and operation, and improves support strength to suppress damage to the fuel cell Can do.

（請求項６／作用効果）
また、本発明に係る燃料電池装置は、該連接部材によって該被加熱部筐体が支持される部分に、該被加熱部筐体と該燃料電池筐体との相対的な位置の変動を所定の方向に制限する変動規制部が設けられている。 (Claim 6 / effect)
In the fuel cell device according to the present invention, the relative position variation between the heated portion casing and the fuel cell casing is predetermined at a portion where the heated portion casing is supported by the connecting member. There is provided a fluctuation restricting section that restricts in the direction.

燃料電池筐体と被加熱部筐体との相対的な可動方向を、変動規制部によって一方向に限定することで、燃料電池筐体と被加熱部筐体との拘束性を高めることができ、運搬時や運転時における耐震品質を向上させることができる。 By restricting the relative movable direction of the fuel cell casing and the heated section casing to one direction by the fluctuation regulating section, it is possible to improve the restraint between the fuel cell casing and the heated section casing. The seismic quality during transportation and operation can be improved.

（請求項７／作用効果）
また、本発明に係る燃料電池装置は、該所定の方向は、該燃料電池筐体と該被加熱部筐体とが対向する面に平行で、かつ、該燃料電池筐体の平面視における該排気管近傍の一辺及び該一辺に対向する該被加熱部筐体近傍の他辺と直交する線分に平行な方向である。 (Claim 7 / effect)
In the fuel cell device according to the present invention, the predetermined direction is parallel to a surface where the fuel cell casing and the heated section casing face each other, and the fuel cell casing in a plan view of the fuel cell casing This is a direction parallel to one side in the vicinity of the exhaust pipe and a line segment orthogonal to the other side in the vicinity of the heated portion casing opposite to the one side.

特に、上記の方向に燃料電池筐体と被過熱部筐体との相対的な可動方向を限定することで、燃料電池筐体と被加熱部筐体とを固定する排気管にねじりや曲げ等の力が加わり、排気管が劣化破損することを防止することができる。 In particular, by limiting the relative movable direction of the fuel cell casing and the overheated portion casing in the above direction, the exhaust pipe that fixes the fuel cell casing and the heated portion casing is twisted or bent, etc. Therefore, the exhaust pipe can be prevented from being deteriorated and damaged.

（請求項８／作用効果）
また、本発明に係る燃料電池装置は、該連接部材は、該燃料電池筐体及び該被加熱部筐体を構成する材料よりも熱伝導率の低い材料を構成部材に持つ。 (Claim 8 / effect)
Further, in the fuel cell device according to the present invention, the connecting member includes a material having a lower thermal conductivity than a material constituting the fuel cell casing and the heated portion casing.

熱伝導率の低い材料を構成部材に持つ連接部材を用いることで、燃料電池筐体の放熱を抑え、燃料電池筐体内の温度を高温に維持することができ、また燃料電池筐体内の温度分布を均一に近づけることができるとともに、燃料電池筐体の上方に被加熱部筐体を支持することができる。さらに、被加熱部への熱の流入及び流出を抑えることができ、燃料電池から排気される排気ガスの熱による被加熱部の温度調整が容易になる。 By using a connecting member having a material with low thermal conductivity as a constituent member, heat dissipation of the fuel cell casing can be suppressed, the temperature inside the fuel cell casing can be maintained at a high temperature, and the temperature distribution within the fuel cell casing Can be made close to each other, and the heated portion casing can be supported above the fuel cell casing. Furthermore, the inflow and outflow of heat to the heated part can be suppressed, and the temperature adjustment of the heated part by the heat of the exhaust gas exhausted from the fuel cell becomes easy.

（請求項９／作用効果）
また、本発明に係る燃料電池装置は、該連接部材は、該燃料電池筐体に固定された第１の留め具、支持材、該被加熱部筐体に固定された第２の留め具、及びこれらを貫通するネジにより構成される。 (Claim 9 / effect)
Further, in the fuel cell device according to the present invention, the connecting member includes a first fastener fixed to the fuel cell casing, a support member, a second fastener fixed to the heated portion casing, And a screw passing therethrough.

これにより、製造上発生する寸法公差を吸収することができる。その結果、取付け位置のずれや隙間の発生による支持強度の低下や、過剰な締め付けによる構成部品の変形の発生を抑制することができる。 Thereby, the dimensional tolerance which arises on manufacture can be absorbed. As a result, it is possible to suppress a decrease in the support strength due to the displacement of the mounting position or the generation of a gap, and the occurrence of deformation of the component parts due to excessive tightening.

（請求項１０／作用効果）
また、本発明に係る燃料電池装置は、該熱伝導率の低い材料は、セラミック材料である。 (Claim 10 / effect)
In the fuel cell device according to the present invention, the material having low thermal conductivity is a ceramic material.

熱伝導率の低い材料としてセラミック材料を用いることで、低い熱伝導性を確保しつつ高い耐熱性（耐火性）を併せ持つことができる。これにより、燃料電池装置の信頼性を向上させることができる。 By using a ceramic material as a material having low thermal conductivity, it is possible to have both high heat resistance (fire resistance) while ensuring low thermal conductivity. Thereby, the reliability of the fuel cell device can be improved.

（実施の形態）
図１、図２、図３及び図５を参照して、本発明の実施の形態に係る燃料電池装置について説明する。図１は、本発明の実施の形態に係る燃料電池装置の縦断面構成の一例を示した模式図である。 (Embodiment)
A fuel cell device according to an embodiment of the present invention will be described with reference to FIGS. 1, 2, 3 and 5. FIG. 1 is a schematic view showing an example of a longitudinal sectional configuration of a fuel cell device according to an embodiment of the present invention.

図１に示すように、燃料電池装置は、燃料電池筐体１とその上方に設けられた被加熱部筐体３とにより構成される。燃料電池筐体１の内部には燃料電池２が設けられ、一方、被加熱部筐体３の内部には被加熱部４が設けられている。燃料電池筐体１と被加熱部筐体３との間には断熱層５が設けられ、燃料電池筐体１と被加熱部筐体３との間で熱移動が生じることを抑制している。 As shown in FIG. 1, the fuel cell device includes a fuel cell casing 1 and a heated section casing 3 provided above the fuel cell casing 1. A fuel cell 2 is provided inside the fuel cell casing 1, while a heated part 4 is provided inside the heated part casing 3. A heat insulating layer 5 is provided between the fuel cell casing 1 and the heated section casing 3 to suppress heat transfer between the fuel cell casing 1 and the heated section casing 3. .

断熱層５としては、例えばシリカ、マグネシア、アルミナ、ジルコニア、シリカヒューム、消石灰等の材料を主成分とした多孔体、繊維体等の断熱材を用いることができる。 As the heat insulating layer 5, for example, a heat insulating material such as a porous body or a fiber body mainly composed of a material such as silica, magnesia, alumina, zirconia, silica fume, and slaked lime can be used.

燃料電池筐体１で生成された排気ガスは、燃料電池筐体１と被加熱部筐体３とを繋ぐ排気管６を通って被加熱部筐体３の内部の被加熱部４に供給される。被加熱部４は、高温の排気ガスの供給を受けることで加熱される。 The exhaust gas generated in the fuel cell casing 1 is supplied to the heated part 4 inside the heated part casing 3 through the exhaust pipe 6 connecting the fuel cell casing 1 and the heated part casing 3. The The heated part 4 is heated by receiving supply of high-temperature exhaust gas.

排気ガスを送るために燃料電池筐体１と被加熱部筐体３とを繋ぐ排気管６は、燃料電池筐体１の上方に配置された被加熱部筐体３を固定する機能も有する。すなわち、図１においては、燃料電池筐体１の上方の被加熱部筐体３が排気管６のみによって固定されている。燃料電池筐体１と被加熱部筐体３との間には上述した断熱層５が挿入されているが、断熱層５には燃料電池筐体１と被加熱部筐体３とを所定の間隔となるように被加熱部筐体３を支持する機能はない。 The exhaust pipe 6 that connects the fuel cell casing 1 and the heated section casing 3 to send the exhaust gas also has a function of fixing the heated section casing 3 disposed above the fuel cell casing 1. That is, in FIG. 1, the heated portion casing 3 above the fuel cell casing 1 is fixed only by the exhaust pipe 6. The heat insulating layer 5 described above is inserted between the fuel cell housing 1 and the heated portion housing 3, and the fuel cell housing 1 and the heated portion housing 3 are connected to the heat insulating layer 5 in a predetermined manner. There is no function of supporting the heated case 3 so as to be spaced.

ここで、燃料電池筐体１と被加熱部筐体３とは、対向する燃料電池筐体１と被加熱部筐体３との間であって、運転時における燃料電池筐体１の上部の温度と被加熱部筐体３の下部の温度との差が最も低い部分を繋ぐように排気管６が接続されている。例えば図１においては、燃料電池筐体１の上部右側と被加熱部筐体３の右側とが排気管６によって接続されている。この場合、燃料電池装置の運転時において、燃料電池筐体１においては上部右側部分の温度が高く、被加熱部筐体３においては右側部分の温度が高くなるように設計されている。このため、燃料電池筐体１とこれに対向する被加熱部筐体３とは、これらの間で最も温度差が小さくなる箇所で排気管６によって接続され固定されている。これにより、燃料電池筐体１と被加熱部筐体３との間の熱の授受を最小限にとどめ、燃料電池筐体１のからの放熱を抑えることができる。 Here, the fuel cell casing 1 and the heated part casing 3 are between the opposed fuel cell casing 1 and the heated part casing 3 and are located above the fuel cell casing 1 during operation. The exhaust pipe 6 is connected so as to connect a portion where the difference between the temperature and the temperature of the lower portion of the heated portion housing 3 is the lowest. For example, in FIG. 1, the upper right side of the fuel cell casing 1 and the right side of the heated section casing 3 are connected by an exhaust pipe 6. In this case, during operation of the fuel cell device, the temperature of the upper right portion of the fuel cell casing 1 is high, and the temperature of the right portion of the heated section casing 3 is designed to be high. For this reason, the fuel cell housing 1 and the heated portion housing 3 facing the fuel cell housing 1 are connected and fixed by the exhaust pipe 6 at a location where the temperature difference is the smallest between them. Thereby, the transfer of heat between the fuel cell casing 1 and the heated section casing 3 can be minimized, and the heat radiation from the fuel cell casing 1 can be suppressed.

このように燃料電池筐体１と被加熱部筐体３との固定を排気管６による固定のみに限定することが好ましい。固定を限定することで熱応力の発生を抑制することができる。 Thus, it is preferable to limit the fixing of the fuel cell casing 1 and the heated section casing 3 only to the fixing by the exhaust pipe 6. The generation of thermal stress can be suppressed by limiting the fixation.

また、図１では排気管６が燃料電池筐体１及び被加熱部筐体３の側面に設けられているが、排気管６の接続位置はこれに限られず、例えば燃料電池筐体１と被加熱部筐体３とが対向する２つの面によって形成される空間内に設けられてもよい。また、燃料電池筐体１の上面形状と被加熱部筐体３の底面形状とは必ずしも同形である必要はなく、例えば燃料電池筐体１の上面形状よりも被加熱部筐体３の底面形状の方が小さい場合には、燃料電池筐体１と被加熱部筐体３とが重ならない燃料電池筐体１の上面に排気管６を配置してもよい。 In FIG. 1, the exhaust pipe 6 is provided on the side surfaces of the fuel cell casing 1 and the heated part casing 3, but the connection position of the exhaust pipe 6 is not limited to this. The heating unit housing 3 may be provided in a space formed by two surfaces facing each other. Further, the shape of the upper surface of the fuel cell housing 1 and the shape of the bottom surface of the heated portion housing 3 are not necessarily the same shape. For example, the shape of the bottom surface of the heated portion housing 3 is higher than the shape of the upper surface of the fuel cell housing 1. If this is smaller, the exhaust pipe 6 may be disposed on the upper surface of the fuel cell casing 1 where the fuel cell casing 1 and the heated section casing 3 do not overlap.

図２は、図１の燃料電池装置の構成に加え、さらに連接部材７を設けた燃料電池装置の縦断面を示す模式図である。図２に示す燃料電池装置においては、連接部材７が燃料電池筐体１と被加熱部筐体３との間であって、排気管６が設けられた右側とは反対の左側の部分に設けられている。このため、連接部材７が設けられた箇所には断熱層５は設けられていない。 FIG. 2 is a schematic view showing a longitudinal section of a fuel cell device provided with a connecting member 7 in addition to the configuration of the fuel cell device of FIG. In the fuel cell device shown in FIG. 2, the connecting member 7 is provided between the fuel cell housing 1 and the heated portion housing 3 and provided on the left side opposite to the right side where the exhaust pipe 6 is provided. It has been. For this reason, the heat insulation layer 5 is not provided in the location in which the connection member 7 was provided.

図２において連接部材７は、燃料電池筐体１上に固定して設けられ、この連接部材７によって被加熱部筐体３が支持されている。 In FIG. 2, the connecting member 7 is fixedly provided on the fuel cell casing 1, and the heated portion casing 3 is supported by the connecting member 7.

図３を用いて、図２に示した連接部材７の一例を説明する。図３において、連接部材７は、燃料電池筐体１と被加熱部筐体３との間に設けられ、燃料電池筐体１と固定された第１の留め具８と、被加熱部筐体３の荷重を受けて被加熱部筐体３を支える支持材９と、被加熱部筐体３と固定された第２の留め具１０と、第１の留め具８と支持材９と第２の留め具１０とを貫通するネジ１１とで構成される。 An example of the connecting member 7 shown in FIG. 2 will be described with reference to FIG. In FIG. 3, the connecting member 7 is provided between the fuel cell casing 1 and the heated portion casing 3, and includes a first fastener 8 fixed to the fuel cell casing 1, and a heated portion casing. 3, a support member 9 that supports the heated portion housing 3 under the load of 3, a second fastener 10 fixed to the heated portion housing 3, a first fastener 8, a support material 9, and a second member. And a screw 11 penetrating through the fastener 10.

第１の留め具８及び第２の留め具１０は、ネジ１１によって連接部材７を一体とするための中間部材であり、被加熱部筐体３を支持する機能を有する必要はない。一方、支持材９は、被加熱部筐体３の荷重を受けて主として燃料電池筐体１上に被加熱部筐体３を支持する機能を有する。 The first fastener 8 and the second fastener 10 are intermediate members for integrating the connecting member 7 with the screw 11 and do not need to have a function of supporting the heated portion housing 3. On the other hand, the support member 9 has a function of receiving the load of the heated portion casing 3 and mainly supporting the heated portion casing 3 on the fuel cell casing 1.

連接部材７によって燃料電池筐体１と被加熱部筐体３とを連接させる場合、燃料電池筐体１と被加熱部筐体３との相対的な位置が変動可能なように連接させることが好ましい。相対的な位置を変動可能とするためには、第１の留め具８又は第２の留め具１０と支持材９との間に隙間１３を設けたり、第１の留め具８又は第２の留め具１０へネジを貫通させるための穴を余剰に大きく設定することなどによって実現することができる。 When the fuel cell casing 1 and the heated part casing 3 are connected by the connecting member 7, the fuel cell casing 1 and the heated part casing 3 are connected so that the relative positions of the fuel cell casing 1 and the heated part casing 3 can be changed. preferable. In order to make the relative position variable, a gap 13 is provided between the first fastener 8 or the second fastener 10 and the support member 9, or the first fastener 8 or the second fastener. This can be realized by setting an excessively large hole for passing the screw through the fastener 10.

これにより、燃料電池筐体１上に配置された被加熱部筐体３の位置に自由度を持たせることができる。このため、その自由度によって、製造上発生する寸法公差を吸収することができる。また、起動・運転時等に生じる熱応力を吸収するとともに支持強度を向上させ、燃料電池の破損を抑制することができる。 Thereby, the position of the to-be-heated part housing | casing 3 arrange | positioned on the fuel cell housing | casing 1 can have a freedom degree. For this reason, the dimensional tolerance which arises on manufacture can be absorbed with the freedom degree. Further, it is possible to absorb the thermal stress generated at the time of start-up / operation, etc. and improve the support strength, thereby suppressing the damage of the fuel cell.

また本発明において、支持材９は熱伝導率の低い材料で形成されていることが好ましい。熱伝導率の低い材料としては、例えばセラミック材料が挙げられる。支持材９に熱伝導率の低い材料としてセラミック材料を用いることで、低い熱伝導性を確保しつつ高い耐熱性（耐火性）を併せ持つことができる。これにより、燃料電池装置の信頼性を向上させることができる。なお、支持材９と同様に、連接部材７を構成するその他の構成部品（例えば第１の留め具８、第２の留め具１０、ネジ１１）も併せて熱伝導率の低い材料を選択することが好ましい。このようにして連接部材７全体を低熱伝導率の材料とすることで、連接部材７を介する熱移動を極力抑制することができる。 Moreover, in this invention, it is preferable that the support material 9 is formed with a material with low heat conductivity. An example of the material having a low thermal conductivity is a ceramic material. By using a ceramic material as the material having low thermal conductivity for the support material 9, it is possible to have both high heat resistance (fire resistance) while ensuring low thermal conductivity. Thereby, the reliability of the fuel cell device can be improved. Similarly to the support member 9, other components (for example, the first fastener 8, the second fastener 10, and the screw 11) that constitute the connecting member 7 are selected together with a material having low thermal conductivity. It is preferable. Thus, the heat transfer through the connection member 7 can be suppressed as much as possible by making the whole connection member 7 the material of low thermal conductivity.

特に連接部材７による連接は、排気管６が配置された部分よりも、燃料電池筐体１の上面とこれに対向する被加熱部筐体３の底面との間の燃料電池装置の運転時における温度差が大きい部分で行うとよい。上述のように、燃料電池筐体１と被加熱部筐体３との固定は、これらの温度差が最も小さい部分で行われる。一方、燃料電池筐体１と被加熱部筐体３との温度差が最も大きくなる部分は、温度差が最も小さい部分と離間しているため、温度差が最も大きくなる部分において連接部材を設置することが被加熱部筐体３の荷重を支える上で最も有効に機能する。 In particular, the connection by the connecting member 7 is more during the operation of the fuel cell device between the upper surface of the fuel cell housing 1 and the bottom surface of the heated portion housing 3 facing the upper surface than the portion where the exhaust pipe 6 is disposed. It is good to carry out in the part where the temperature difference is large. As described above, the fuel cell casing 1 and the heated section casing 3 are fixed at a portion where the temperature difference is the smallest. On the other hand, since the portion where the temperature difference between the fuel cell housing 1 and the heated portion housing 3 is the largest is separated from the portion where the temperature difference is the smallest, the connecting member is installed in the portion where the temperature difference is the largest. This works most effectively in supporting the load of the heated case 3.

このように熱伝導率の低い材料を構成部材に持つ連接部材７を用いることで、燃料電池筐体１から被加熱部筐体３への放熱を抑えることができるため、燃料電池筐体１内の温度を高温に維持することができる。また、燃料電池筐体１内の温度分布を均一に近づけることができるとともに、燃料電池筐体１の上方に被加熱部筐体３を支持することができる。 By using the connecting member 7 having a material having a low thermal conductivity in this way, heat radiation from the fuel cell housing 1 to the heated portion housing 3 can be suppressed, so that the inside of the fuel cell housing 1 Can be maintained at a high temperature. In addition, the temperature distribution in the fuel cell casing 1 can be made uniform, and the heated section casing 3 can be supported above the fuel cell casing 1.

ここで図５を用いて、燃料電池筐体１の上面と被加熱部筐体３の底面の位置との温度との関係について一例を示す。図５の下図は燃料電池筐体１の上方に被加熱部筐体３が配置された燃料電池装置の縦断面を示し、図５の上図は下図の水平方向の位置に対する燃料電池筐体温度２０と被加熱部筐体温度２１を示している。 Here, an example of the relationship between the temperature of the upper surface of the fuel cell housing 1 and the position of the bottom surface of the heated portion housing 3 will be described with reference to FIG. The lower diagram of FIG. 5 shows a longitudinal section of the fuel cell device in which the heated portion housing 3 is disposed above the fuel cell housing 1, and the upper diagram of FIG. 5 shows the fuel cell housing temperature relative to the horizontal position in the lower diagram. 20 and a heated part housing temperature 21 are shown.

図５においては、燃料電池筐体１の内部構造によって、燃料電池筐体１の上面の燃料電池筐体温度２０は右側が最も低い温度分布を示している。一方、被加熱部筐体３の底面の被加熱部筐体温度２１は、被加熱部の内部構造によって、右側が最も温度が高い分布を示している。よって燃料電池筐体１と被加熱部筐体３とは、燃料電池筐体温度２０と被加熱部筐体温度２１との温度差が最も小さい右端部において排気管６により固定され、一方燃料電池筐体温度２０と被加熱部筐体温度２１との温度差が最も大きい左端部において連接部材７によって連接されている。 In FIG. 5, due to the internal structure of the fuel cell casing 1, the fuel cell casing temperature 20 on the upper surface of the fuel cell casing 1 shows the lowest temperature distribution on the right side. On the other hand, the heated portion casing temperature 21 on the bottom surface of the heated portion casing 3 has the highest temperature distribution on the right side due to the internal structure of the heated portion. Therefore, the fuel cell casing 1 and the heated part casing 3 are fixed by the exhaust pipe 6 at the right end where the temperature difference between the fuel cell casing temperature 20 and the heated part casing temperature 21 is the smallest, while the fuel cell The connecting member 7 is connected at the left end where the temperature difference between the casing temperature 20 and the heated part casing temperature 21 is the largest.

以上のように、燃料電池筐体１と被加熱部筐体３とを温度差の大きい部分で低熱伝導率部材を介して固定することによって、燃料電池筐体１上に被加熱部筐体３を支持しつつ、燃料電池筐体１の放熱を抑制することができる。このため、燃料電池筐体１内の温度を高温に維持することができ、また燃料電池筐体１内の温度分布を均一に近づけることができる。さらに、被加熱部４への熱の流入及び流出を抑えることができるため、燃料電池筐体１から排気管６を経由して供給される排気ガスの熱によって被加熱部４の温度を調整することが容易になる。 As described above, by fixing the fuel cell housing 1 and the heated portion housing 3 via the low thermal conductivity member at a portion where the temperature difference is large, the heated portion housing 3 is placed on the fuel cell housing 1. The heat dissipation of the fuel cell housing 1 can be suppressed while supporting the fuel cell. For this reason, the temperature in the fuel cell casing 1 can be maintained at a high temperature, and the temperature distribution in the fuel cell casing 1 can be made closer to uniform. Furthermore, since the inflow and outflow of heat to the heated part 4 can be suppressed, the temperature of the heated part 4 is adjusted by the heat of the exhaust gas supplied from the fuel cell casing 1 via the exhaust pipe 6. It becomes easy.

（実施例１）
図４を参照して、実施の形態に係る燃料電池装置の実施例１について説明する。図４は実施の形態に係る燃料電池装置における、連接部材７の構成例を示す縦断面模式図である。すなわち、燃料電池筐体１の上方に設けられた被加熱部筐体３は連接部材によって支持されている。本実施例における連接部材７は対向する燃料電池筐体１と被加熱部筐体３との側面に取り付けられている。燃料電池筐体１の側面には第１の留め具８が固定され、被加熱部筐体３の側面には第２の留め具１０が固定されている。図４に示すように、第１の留め具８と第２の留め具１０との間には空間が設けられ、この空間に支持材９が設置され、第１の留め具８、支持材９、第２の留め具１０を貫通してネジ１１が設けられている。本実施例においては、ネジ１１は第１の留め具８、支持材９、第２の留め具１０を上下方向に貫通している。また、図４に示すように、支持材９は、燃料電池筐体１と被加熱部筐体３との間に設けられた断熱層５及び第１の留め具８との間に隙間１２が設けられ、ネジ１１が貫通する第２の留め具１０の穴はネジ１１の径よりも大きく隙間１３を有する。 Example 1
With reference to FIG. 4, Example 1 of the fuel cell device according to the embodiment will be described. FIG. 4 is a schematic longitudinal sectional view showing a configuration example of the connecting member 7 in the fuel cell device according to the embodiment. That is, the heated portion casing 3 provided above the fuel cell casing 1 is supported by the connecting member. The connecting member 7 in this embodiment is attached to the side surfaces of the fuel cell casing 1 and the heated section casing 3 that face each other. A first fastener 8 is fixed to the side surface of the fuel cell housing 1, and a second fastener 10 is fixed to the side surface of the heated portion housing 3. As shown in FIG. 4, a space is provided between the first fastener 8 and the second fastener 10, and a support member 9 is installed in this space, and the first fastener 8 and the support member 9. A screw 11 is provided through the second fastener 10. In this embodiment, the screw 11 penetrates the first fastener 8, the support member 9, and the second fastener 10 in the vertical direction. As shown in FIG. 4, the support material 9 has a gap 12 between the heat insulating layer 5 and the first fastener 8 provided between the fuel cell casing 1 and the heated section casing 3. The hole of the second fastener 10 that is provided and through which the screw 11 passes has a gap 13 larger than the diameter of the screw 11.

当該連接部材７の構成により、燃料電池筐体１の上方の被加熱部筐体３を支持することができる。また、被加熱部筐体３に固定される第２の留め具１０が隙間１３を有することにより、被加熱部筐体３の水平方向の変動を隙間１３の間隔分だけ許容し、変動可能とすることができる。一方、被加熱部筐体３の上下方向の変動については規制されている。これにより、製造上発生する所定方向の寸法公差を吸収することができる。また、起動・運転時等に生じる熱応力を所定方向に対して吸収することができる。 With the configuration of the connecting member 7, the heated portion casing 3 above the fuel cell casing 1 can be supported. Further, since the second fastener 10 fixed to the heated case 3 has the gap 13, the horizontal variation of the heated case 3 is allowed by the gap 13 and can be changed. can do. On the other hand, fluctuations in the vertical direction of the heated case 3 are restricted. Thereby, the dimensional tolerance of the predetermined direction which generate | occur | produces on manufacture can be absorbed. In addition, it is possible to absorb thermal stress generated during startup and operation in a predetermined direction.

（実施例２）
図６を参照して、実施の形態に係る燃料電池装置の実施例２について説明する。図６は実施の形態に係る燃料電池装置における、連接部材７の構成例を示す縦断面模式図である。すなわち、燃料電池筐体１の上方に設けられた被加熱部筐体３は連接部材によって支持されている。本実施例における連接部材７は対向する燃料電池筐体１と被加熱部筐体３との間に取り付けられている。燃料電池筐体１の側面にはＩ字型の第１の留め具８が固定され、被加熱部筐体３の底面には逆Ｌ字型の第２の留め具１０が固定されている。図６に示すように、第１の留め具８と第２の留め具１０との間には空間が設けられ、この空間に支持材９及び弾性部材１４が設置され、第１の留め具８、支持材９、第２の留め具１０及び弾性部材１４を貫通してネジ１１が設けられている。本実施例においては、ネジ１１は第１の留め具８、支持材９、第２の留め具１０及び弾性部材１４を水平方向に貫通している。図６に示すように、ネジ１１が貫通する第１の留め具８の穴はネジ１１の径よりも大きく隙間１２を有する。また、支持材９と第２の留め具１０との間には隙間１３が設けられ、この隙間１３に弾性部材１４が設けられている。 (Example 2)
Example 2 of the fuel cell device according to the embodiment will be described with reference to FIG. FIG. 6 is a schematic longitudinal sectional view showing a configuration example of the connecting member 7 in the fuel cell device according to the embodiment. That is, the heated portion casing 3 provided above the fuel cell casing 1 is supported by the connecting member. The connecting member 7 in this embodiment is attached between the fuel cell casing 1 and the heated section casing 3 which face each other. An I-shaped first fastener 8 is fixed to the side surface of the fuel cell housing 1, and an inverted L-shaped second fastener 10 is fixed to the bottom surface of the heated portion housing 3. As shown in FIG. 6, a space is provided between the first fastener 8 and the second fastener 10, and a support member 9 and an elastic member 14 are installed in this space, and the first fastener 8. Screws 11 are provided through the support member 9, the second fastener 10 and the elastic member 14. In this embodiment, the screw 11 penetrates the first fastener 8, the support member 9, the second fastener 10 and the elastic member 14 in the horizontal direction. As shown in FIG. 6, the hole of the first fastener 8 through which the screw 11 passes has a gap 12 larger than the diameter of the screw 11. Further, a gap 13 is provided between the support member 9 and the second fastener 10, and an elastic member 14 is provided in the gap 13.

当該連接部材７の構成により、燃料電池筐体１の上方の被加熱部筐体３を支持することができる。また、燃料電池筐体１に固定される第１の留め具８が隙間１２を有することにより、被加熱部筐体３の上下方向の変動を隙間１３の間隔分だけ許容し、変動可能とすることができる。さらに支持材９と第２の留め具１０との隙間１３内に弾性部材１４が設けられているため、被加熱部筐体３が水平方向への変動を可能にしている。 With the configuration of the connecting member 7, the heated portion casing 3 above the fuel cell casing 1 can be supported. Further, since the first fastener 8 fixed to the fuel cell casing 1 has the gap 12, the variation in the vertical direction of the heated part casing 3 is allowed by the gap 13 and can be varied. be able to. Furthermore, since the elastic member 14 is provided in the gap 13 between the support member 9 and the second fastener 10, the heated portion housing 3 can be changed in the horizontal direction.

弾性部材１４には、例えばバネ材を用いることができる。弾性部材１４は低熱伝導率の材料を用いることが好ましい。 For example, a spring material can be used for the elastic member 14. The elastic member 14 is preferably made of a material having low thermal conductivity.

これにより、製造上発生する寸法公差を吸収することができる。また、起動・運転時等に生じる熱応力を吸収することができる。 Thereby, the dimensional tolerance which arises on manufacture can be absorbed. Further, it is possible to absorb thermal stress that occurs during startup and operation.

（実施例３）
図７を参照して、実施の形態に係る燃料電池装置の実施例３について説明する。図７は実施の形態に係る燃料電池装置における、連接部材７の構成例を示す縦断面模式図である。すなわち、燃料電池筐体１の上方に設けられた被加熱部筐体３は連接部材によって支持されている。本実施例における連接部材７は対向する燃料電池筐体１と被加熱部筐体３との間に取り付けられている。燃料電池筐体１の側面にはＩ字型の第１の留め具８が固定され、被加熱部筐体３の底面には逆Ｌ字型の第２の留め具１０が固定されている。図７に示すように、第１の留め具８と第２の留め具１０との間には空間が設けられ、この空間に支持材９が設置され、第１の留め具８、支持材９、第２の留め具１０を貫通してネジ１１が設けられている。本実施例においては、ネジ１１は第１の留め具８、支持材９、第２の留め具１０を水平方向に貫通している。図７に示すように、ネジ１１が貫通する第１の留め具８の上下方向及び奥行き方向における穴の幅はネジ１１の径とほぼ同じであり、隙間１２は極めて小さい。 (Example 3)
Example 3 of the fuel cell device according to the embodiment will be described with reference to FIG. FIG. 7 is a schematic longitudinal sectional view showing a configuration example of the connecting member 7 in the fuel cell device according to the embodiment. That is, the heated portion casing 3 provided above the fuel cell casing 1 is supported by the connecting member. The connecting member 7 in this embodiment is attached between the fuel cell casing 1 and the heated section casing 3 which face each other. An I-shaped first fastener 8 is fixed to the side surface of the fuel cell housing 1, and an inverted L-shaped second fastener 10 is fixed to the bottom surface of the heated portion housing 3. As shown in FIG. 7, a space is provided between the first fastener 8 and the second fastener 10, and a support member 9 is installed in this space, and the first fastener 8 and the support member 9. A screw 11 is provided through the second fastener 10. In this embodiment, the screw 11 penetrates the first fastener 8, the support member 9, and the second fastener 10 in the horizontal direction. As shown in FIG. 7, the width of the hole in the vertical direction and the depth direction of the first fastener 8 through which the screw 11 passes is almost the same as the diameter of the screw 11, and the gap 12 is extremely small.

これにより、燃料電池筐体１の上方に設けられた被加熱部筐体３は、図７の上下方向及び奥行き方向に対し変動が規制される。すなわち、上記のようなほぼネジと同形の穴を有する第１の留め具８は、燃料電池筐体１と被加熱部筐体３との相対的な位置の変動を所定の方向に制限する変動規制部として機能する。 Thereby, the variation of the heated portion casing 3 provided above the fuel cell casing 1 is restricted with respect to the vertical direction and the depth direction in FIG. That is, the first fastener 8 having a hole substantially the same shape as the screw as described above is a variation that restricts a relative position variation between the fuel cell casing 1 and the heated portion casing 3 in a predetermined direction. Functions as a regulation unit.

また、被加熱部筐体３は水平方向（図７における左右の方向）には規制を受けずに変動が可能であるため、製造上発生する所定方向の寸法公差を吸収することができる。また、起動・運転時等に生じる熱応力を吸収することができる。 Moreover, since the to-be-heated part housing | casing 3 can be fluctuate | varied without being regulated in the horizontal direction (left-right direction in FIG. 7), it can absorb the dimensional tolerance of the predetermined direction which arises on manufacture. Further, it is possible to absorb thermal stress that occurs during startup and operation.

上記説明から、当業者にとって、本発明の多くの改良や他の実施の形態が明らかである。従って、上記説明は、例示としてのみ解釈されるべきであり、本発明を実行する最良の態様を当業者に教示する目的で提供されたものである。本発明の精神を逸脱することなく、その構造及び／又は機能の詳細を実質的に変更することができる。 From the above description, many modifications and other embodiments of the present invention are apparent to persons skilled in the art. Accordingly, the foregoing description should be construed as illustrative only and is provided for the purpose of teaching those skilled in the art the best mode of carrying out the invention. Details of the structure and / or function may be substantially changed without departing from the spirit of the invention.

１燃料電池筐体
２燃料電池
３被加熱部筐体
４被加熱部
５断熱層
６排気管
７連接部材
８第１の留め具
９支持材
１０第２の留め具
１１ネジ
１２隙間
１３隙間
１４弾性部材
２０燃料電池筐体温度
２１被加熱部筐体温度 DESCRIPTION OF SYMBOLS 1 Fuel cell housing | casing 2 Fuel cell 3 Heated part housing | casing 4 Heated part 5 Heat insulation layer 6 Exhaust pipe 7 Connecting member 8 1st fastener 9 Support material 10 2nd fastener 11 Screw 12 Gap 13 Gap 14 Elasticity Member 20 Fuel cell casing temperature 21 Heated part casing temperature

Claims

A fuel cell housing containing a fuel cell that generates power by an electrochemical reaction between a raw material and power generation air, and a heated portion heated to a predetermined temperature by heat of exhaust gas exhausted from the fuel cell housing A fuel cell comprising: a heated portion housing having a heat insulating layer provided between the fuel cell housing and the heated portion housing; and an exhaust pipe for guiding the exhaust gas to the heated portion. A device,
The exhaust pipe is arranged by connecting the portions where the temperature difference during operation between the fuel cell casing and the heated section casing facing each other is the lowest, and the fuel cell casing and the fuel cell casing The heated part casing provided above is fixed,
In addition to fixing by the exhaust pipe, the fuel cell casing and the heated portion casing are made of a material having a lower thermal conductivity than the material constituting the fuel cell casing and the heated portion casing. The fuel cell device is connected by a connecting member.

In claim 1 ,
The connecting member includes a first fastener fixed to the fuel cell casing, a support member, a second fastener fixed to the heated section casing, and a screw that passes through the first fastener.
Between the screw and the first fastener, or between the connecting member and the first fastener and the second fastener, a gap for absorbing a dimensional tolerance during assembly is provided. A fuel cell device characterized by comprising:

In claim 1 or 2 ,
The connection by the connecting member is made at a portion where the temperature difference during operation between the fuel cell housing and the heated portion housing facing each other is higher than the portion where the exhaust pipe is disposed. A fuel cell device.

A fuel cell housing containing a fuel cell that generates power by an electrochemical reaction between a raw material and power generation air, and a heated portion heated to a predetermined temperature by heat of exhaust gas exhausted from the fuel cell housing A fuel cell comprising: a heated portion housing having a heat insulating layer provided between the fuel cell housing and the heated portion housing; and an exhaust pipe for guiding the exhaust gas to the heated portion. A device,
The exhaust pipe is arranged by connecting the portions where the temperature difference during operation between the fuel cell casing and the heated section casing facing each other is the lowest, and the fuel cell casing and the fuel cell casing The heated part casing provided above is fixed,
The heated section casing is provided between the fuel cell casing and the heated section casing so that a relative position between the fuel cell casing and the heated section casing can be changed. A fuel cell device is supported by a connected member.

In claim 4 ,
A variation restricting portion is provided in a portion where the heated portion casing is supported by the connecting member, and restricts a relative position variation between the heated portion casing and the fuel cell casing in a predetermined direction. A fuel cell device characterized by comprising:

In claim 5 ,
The predetermined direction is parallel to a surface where the fuel cell casing and the heated section casing face each other, and faces one side and the one side near the exhaust pipe in a plan view of the fuel cell casing. 2. A fuel cell device according to claim 1, wherein the fuel cell device has a direction parallel to a line segment orthogonal to the other side in the vicinity of the heated portion casing.

In any one of Claims 4 thru | or 6 ,
The connecting member has, as a constituent member, a material having a lower thermal conductivity than a material constituting the fuel cell casing and the heated section casing.

In any one of Claims 4 thru | or 7 ,
The connecting member is composed of a first fastener fixed to the fuel cell casing, a support material, a second fastener fixed to the heated section casing, and a screw passing therethrough. A fuel cell device.

In claim 1 or 7 ,
The fuel cell device, wherein the material having a low thermal conductivity is a ceramic material.