JP2015191712A - Fuel battery system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel battery system that can be enhanced in maintenance performance.SOLUTION: A fuel battery system having a fuel battery module has plural first parts 7a which are exchanged when the part lifetime thereof elapses and whose part lifetimes are shorter than the lifetime of the fuel battery system, and a housing 30 in which at least plural first parts are accommodated and which has an opening through which the first parts are exchanged. When a group consisting of some or all of the plural first parts is defined as a first part group 10a, the largest common divisor of the lifetimes of the plural first parts belonging to the first part group is the part lifetime of a predetermined first part. The plural first parts belonging to the first part group are arranged in turn from the opening to the back of the housing in the order of increasing the length of the part lifetime.

Description

  The present invention relates to a fuel cell system.

  Patent Document 1 discloses at least a power generation unit containing a solid oxide fuel cell in a container, a hot water storage tank for storing hot water heated by exhaust heat recovery of the power generation unit, and hot water when the hot water in the hot water storage tank is insufficient A power generation / hot water cogeneration system is disclosed in which the hot water storage tank and the water heater are separately installed separately.

JP 2007-294296 A

  An object of the present invention is to improve the maintainability of a fuel cell system.

  One aspect of the fuel cell system of the present invention is a fuel cell system including a fuel cell module, which is replaced when a component life elapses, and the component life is shorter than the life of the fuel cell system. A plurality of first parts, and a housing that accommodates at least the plurality of first parts and is provided with an opening for exchanging the first parts. When a group is a first part group, the greatest common divisor of the part life of the first part belonging to the first part group is a part life of a predetermined first part, and a plurality of the parts belonging to the first part group The first parts are arranged in order from the shortest part to the longest part from the opening toward the back of the housing.

  According to one aspect of the present invention, there is an effect that the maintainability of the fuel cell system can be improved.

FIG. 1 is a cross-sectional view showing an example of a schematic configuration of the fuel cell system according to the first embodiment. FIG. 2A is a diagram illustrating a method for replacing the first part in an example of a schematic configuration of the fuel cell system according to the first embodiment. FIG. 2B is a diagram illustrating a method of replacing the first part in an example of a schematic configuration of the fuel cell system according to the first embodiment. FIG. 3 is a perspective view showing the fuel cell system according to the first embodiment. FIG. 4 is a front view of a cross section showing the fuel cell system according to the first embodiment. FIG. 5 is a cross-sectional view of the fuel cell system according to the first embodiment as viewed from above. FIG. 6 is a side view showing a cross section of the fuel cell system according to the first embodiment. FIG. 7 is an exploded view showing the fuel cell system according to the first embodiment.

  The present inventors diligently studied a specific configuration for improving the maintainability of the fuel cell system. As a result, the following knowledge was obtained.

  When a configuration that can be taken when the configuration of Patent Document 1 is actually implemented was examined, first, since there is no large-scale hydrogen generator and the hot water storage tank is miniaturized, a fuel containing SOFC in one casing It is conceivable to store a battery module and a hot water storage tank. As a result, the number of parts is reduced, and the weight is also reduced overall.

  Here, a hot water storage tank is placed beside or behind the fuel cell module, and there are parts that need to be replaced before the end of the life of the fuel cell system around the fuel cell module. It is possible to arrange parts. Furthermore, it is conceivable that the parts requiring replacement are arranged as close as possible to the location where the housing can be opened (for example, near the lid), so that maintenance can be facilitated.

  In such a fuel cell system, the number of parts is reduced, and overall maintenance can be facilitated. However, there are some parts that have different parts life, such as parts that need to be replaced before the end of the life of the fuel cell system, such as raw materials such as raw material gas, parts that control water and air, and parts that perform gas detection. Or exist. Typically, such components will be placed along the flow of each fluid or the like. As a result, when parts are replaced, an unreasonable situation may occur in which other parts that do not require replacement at that time must be moved or removed. Such a problem may occur in various fuel cell systems such as PEFC as well as SOFC.

  The present inventors have obtained new insight that it is effective to adjust the arrangement of components so that maintenance can be efficiently performed in consideration of the lifetime of the components. And the structure for establishing a fuel cell system as a product earnestly examined. As a result, the parts are replaced when their lifetimes have passed, and the plurality of first parts whose component lives are shorter than the lifetime of the fuel cell system and at least the plurality of first parts are accommodated, and the first parts are replaced. In a fuel cell system comprising: a housing provided with an opening for providing a first component group, a component life of a first component belonging to a predetermined first component group is defined as a first component group. The longest common divisor of the first part is the part life of the predetermined first part, and the plurality of first parts belonging to the first part group are long from the part with the short part life from the opening toward the back of the housing. The idea was to arrange them in order.

  In such a configuration, since the component having the shortest component life is disposed closest to the opening, the component can be easily replaced through the opening. Furthermore, when replacing a part having a longer part life, the part having the shortest part life is also replaced at the same time, so that it is easy to access a part having a longer part life. Therefore, the maintainability of the fuel cell system can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  Each of the embodiments described below shows a specific example of the present invention. Numerical values, shapes, materials, components, arrangement positions and connection forms of components, steps, order of steps, and the like shown in the following embodiments are merely examples, and do not limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are described as optional constituent elements. In the drawings, the same reference numerals are sometimes omitted. In addition, the drawings schematically show the respective components for easy understanding, and there are cases where the shape, dimensional ratio, and the like are not accurately displayed. Moreover, in a manufacturing method, the order of each process etc. can be changed as needed, and another well-known process can be added.

(First embodiment)
The fuel cell system according to the first embodiment is a fuel cell system including a fuel cell module, and is replaced when a component life elapses, and a plurality of first components whose component life is shorter than the life of the fuel cell system. A housing that accommodates at least a plurality of first parts and is provided with an opening for exchanging the first parts. When the component group is used, the greatest common divisor of the component lifetimes of the plurality of first components belonging to the first component group is the component lifetime of the predetermined first component, and the plurality of first components belonging to the first component group are opened. From the shortest part life to the longest part of the casing.

  With such a configuration, the maintainability of the fuel cell system can be improved.

  The component life means the upper limit time when replacement of the component is required when the use time reaches a certain upper limit time due to the progress of wear and deterioration of the component as the use time elapses. . Parts that have reached the end of their service life will be replaced even if no particular failure has occurred.

  The life of the fuel cell system means the upper limit time when the operation of the fuel cell system is prohibited when the operation time reaches a certain upper limit time from the viewpoint of safety or the like.

  The first part refers to a part that is replaced when the part life elapses and whose part life is shorter than the life of the fuel cell system.

  The first part group includes a first part whose part life is the greatest common divisor and a first part whose part life is an integer multiple of the greatest common divisor. The greatest common divisor here is the greatest common divisor of all the first parts included in the first part group.

  “Arranged in order from shortest to longest parts” means that when there are a plurality of first parts having the same part life, the first parts are arranged in the horizontal direction (from the opening to the housing). It is not necessarily required to line up in a direction perpendicular to the direction toward the back, and the case where components having the same component life are arranged in a line from the opening side to the back side of the housing in any order is included.

  In the fuel cell system, in all the pairs extracted from the plurality of first parts belonging to the same first part group, one part life may be an integral multiple of the other part life.

  In such a configuration, when replacing the first part disposed in the back of the casing, the first part disposed in front of the first part is also replaced at the same time, so that the maintainability of the fuel cell system can be further improved. .

  In the fuel cell system, the plurality of first parts form a plurality of first parts groups, and the greatest common divisor of the lifespan of the first parts belonging to the respective first parts groups is different for each first parts group. May be.

  In such a configuration, the maintainability of the fuel cell system can be further improved by arranging the first parts in the housing separately for each group having different greatest common divisors.

  The fuel cell system may include a regenerator that stores heat recovered from the fuel cell module, and the first part belonging to the first part group may be disposed between the fuel cell module and the regenerator.

  In such a configuration, at least one of the member that connects the first component and the heat accumulator and the member that connects the first component and the controller becomes easy.

  In the fuel cell system, the fuel cell module may be disposed at least one of vertically above and vertically below the heat accumulator.

  With this configuration, the installation area of the fuel cell system can be reduced.

  The fuel cell system may further include a second component having a component life longer than that of the fuel cell system, and the second component may be disposed between the fuel cell module and the heat accumulator.

  In such a configuration, it is easy to route at least one of the member that connects the second component and the heat accumulator and the member that connects the second component and the fuel cell module.

  In the fuel cell system, the second component may be disposed at a position where it can be exchanged through the opening.

  In such a configuration, replacement of the second part is facilitated, and the maintainability of the fuel cell system can be further improved.

[Device configuration]
FIG. 1 is a cross-sectional view showing an example of a schematic configuration of the fuel cell system according to the first embodiment. Hereinafter, the fuel cell system 100 of the first embodiment will be described with reference to FIG.

  In the example shown in FIG. 1, the fuel cell system 100 includes a first component group 10, a fuel cell module 20, and a housing 30.

  The first component group 10 is a group consisting of a plurality of first components 12, 14, 16. The first components 12, 14, and 16 are all replaced when the component lifetime has passed, and the component lifetime is shorter than the lifetime of the fuel cell system 100. For example, assuming that the lifetime of the fuel cell system 100 is 15 years, the component lifetimes of the first components 12, 14, and 16 are all less than 15 years. Note that, unless otherwise specified, replacement means replacement performed when a part has reached the end of its life regardless of whether or not a failure has occurred in the part, and does not include replacement due to failure.

  In the example shown in FIG. 1, the number of first parts belonging to the first part group 10 is three, but the number of first parts belonging to the first part group 10 may be two or four or more. A plurality of first component groups 10 may be formed. The first part may exist in addition to the first parts 12, 14, 16. That is, the first component group 10 is a group consisting of some or all of the plurality of first components.

  Examples of the first part include a desulfurizer that removes sulfur compounds from the raw material gas, a deionizer that generates pure water, an air filter that removes particulate matter in the air, and a chemical substance in the air (NOx, etc.). A chemical filter for removing gas, a gas sensor for detecting a raw material gas, a CO sensor for detecting carbon monoxide (CO), and the like. The component life of each first component can be adjusted according to the amount of catalyst, the amount of adsorbent, the filter area, and the like included in each first component.

  The fuel cell module 20 is a module including a fuel cell. The fuel cell can generate power using, for example, a hydrogen-containing gas generated by a reformer. The fuel cell module 20 may include a reformer that generates a hydrogen-containing gas using raw materials. The fuel cell can be a solid oxide fuel cell. The fuel cell may be any other type, and examples include a polymer electrolyte fuel cell and a phosphoric acid fuel cell. In the case where the fuel cell is a solid oxide fuel cell, the reforming unit and the fuel cell can be built in one container.

  The housing 30 accommodates at least the plurality of first parts 12, 14, and 16 and is provided with an opening 32 for exchanging the first parts.

  The greatest common divisor of the component life of the first components 12, 14, and 16 belonging to the first component group 10 is the component life of the predetermined first component. For example, the greatest common divisor of the component life of the first components 12, 14, 16 is the component life of the first component 12. Specifically, when the lifetime of the first component 12 is 2 years, the lifetime of the first components 14 and 16 is each a multiple of 2 (2 years, 4 years, 6 years,...・ One of the above.

  The plurality of first components 12, 14, 16 belonging to the first component group 10 are arranged in order from the shortest component life to the longest component from the opening 32 toward the back of the housing 30. For example, the component life of the first component 12 closest to the opening 32 is the shortest (for example, 2 years), and the component life of the first component 14 arranged next to the first component 12 is shortest next to the first component 12 ( For example, the lifetime of the first component 16 arranged at the back is the longest in the first component group 10 (for example, 6 years).

  In addition, the component lifetimes of some first components may be equal to each other. For example, the component life of the first component 12 and the component life of the first component 14 may be equal to each other.

  In the configuration of the first embodiment, when replacing the first part disposed at the back, the first part closest to the opening 32 is always replaced at the same time, so that the first part disposed at the back is easily accessible. Become. For example, when exchanging the first part arranged at the back, the first part arranged at the foremost side is always exchanged, so that it is easy to access. Or, for example, if a plurality of first parts belonging to the same first part group are fixed to the same slidable table, it is possible to access the plurality of first parts at once by simply pulling out the same table. It becomes. Therefore, the maintainability of the fuel cell system can be improved.

  In all the pairs taken out from the plurality of first parts 12, 14, and 16 belonging to the same first part group 10, one part life may be an integral multiple of the other part life.

  In such a configuration, when replacing the first part arranged in the back, all the first parts arranged in front of it are always exchanged. For example, when the first part 16 is replaced, the first parts 12 and 14 are also replaced at the same time. Therefore, even if the plurality of first parts 12, 14, 16 belonging to the same first part group 10 are not fixed to the same table or the like that can be pulled out, the first part after the third from the opening 32 is more Can be easily replaced.

  Specifically, for example, the component life of the first component 12 can be 2 years, the component life of the first component 14 can be 4 years, and the component life of the first component 16 can be 8 years. At this time, in all the pairs taken out from the first component group 10, one of the component lifetimes is an integral multiple of the other component lifetime. That is, in the 2-4 year pair, 4 years is twice the 2 years, in the 2-8 years pair, the 8 years is 4 times the 2 years, and the 4-8 years In comparison, 8 years is twice as long as 4 years.

  The plurality of first components may form a plurality of first component groups, and the greatest common divisor of the component lifetimes of the first components belonging to the respective first component groups may be different for each first component group. For example, the part life of the first part belonging to the first first part group is 2, 4 or 6 years, and the part life of the first part belonging to the second first part group is 2. It may be 5 years, 5 years, 7.5 years. Maintainability can be further improved by configuring the first component group for each of a plurality of series whose component lifetimes are integer multiples of different years.

  A heat accumulator (for example, the heat accumulator 40 in FIG. 4) that stores heat recovered from the fuel cell module 20 is provided, and the first parts 12, 14, and 16 belonging to the first part group 10 are the fuel cell module 20, the heat accumulator, It may be arranged between.

  In many cases, the first parts 12, 14, and 16 are each connected to at least one of the fuel cell module 20 and the heat accumulator. By arranging the first parts 12, 14, and 16 between the fuel cell module 20 and the heat accumulator, the first parts 12, 14, and 16 can be connected to both the fuel cell module 20 and the heat accumulator by a short path. Members (for example, cables, pipes, etc.) that connect at least one of the fuel cell module 20 and the heat accumulator and the first components 12, 14, and 16 can be shortened, and the connection members can be easily removed and replaced. Therefore, maintainability is further improved.

  The fuel cell module 20 may be disposed at least one of vertically above and vertically below the heat accumulator. In such a configuration, the heat accumulator, the first component group, and the fuel cell module 20 are arranged in a line in the vertical direction. Therefore, the installation area of the fuel cell system 100 can be reduced.

  A second component (for example, the second component 50 in FIG. 4) having a component life equal to or longer than that of the fuel cell system may be provided, and the second component may be disposed between the fuel cell module 20 and the heat accumulator.

  The second component can be connected to at least one of the fuel cell module 20 and the heat accumulator. By disposing the second part between the fuel cell module 20 and the heat accumulator, the second part can also be connected to both the fuel cell module 20 and the heat accumulator through a short path. A member (for example, a cable, a pipe, or the like) that connects at least one of the fuel cell module 20 and the heat accumulator and the second component can be shortened, and the connection member can be easily removed and replaced.

  Furthermore, the fuel cell module 20 may be disposed at least one of vertically above and vertically below the heat accumulator. In such a configuration, the heat accumulator, the second component, and the fuel cell module 20 are arranged in a line in the vertical direction. Therefore, the installation area of the fuel cell system 100 can be reduced.

  The second part may be disposed at a position where it can be exchanged through the opening 32. In such a configuration, even if the second part breaks down, the second part can be easily replaced through the opening 32 common to the first part.

  In the fuel cell system according to the first embodiment, among the first parts belonging to the first part group, the part having the shortest part life is arranged so as to be closest to the opening. Therefore, the replacement work of the first component can be performed efficiently without waste. Therefore, the maintainability of the fuel cell system 100 is improved.

  FIG. 2A is a diagram illustrating a method for replacing the first part in an example of a schematic configuration of the fuel cell system according to the first embodiment. FIG. 2A shows a case where the first component 14 is replaced.

  The component life of the first component 14 is an integral multiple of the component life of the first component 12. As shown in FIG. 2A, when the first component 14 is replaced, the first component 12 is also replaced at the same time. Therefore, the first component 14 can be easily replaced with the first component 12 removed. At the same time, since the first part 12 is also replaced, the removal work of the first part 12 is not wasted. Therefore, the maintainability of the fuel cell system 100 is improved.

  FIG. 2B is a diagram illustrating a method of replacing the first part in an example of a schematic configuration of the fuel cell system according to the first embodiment. FIG. 2B shows a case where the first component 16 is replaced.

  The component life of the first component 16 is an integral multiple of the component life of the first component 12. As shown in FIG. 2B, when the first part 16 is replaced, the first part 12 is also replaced at the same time. Therefore, the first component 16 can be easily replaced only by removing the first component 14 with the first component 12 removed. At the same time, since the first part 12 is also replaced, the removal work of the first part 12 is not wasted. Therefore, the maintainability of the fuel cell system 100 is improved.

  In addition, in all the pairs taken out from the first parts 12, 14, 16, when the life of any one of the parts is an integral multiple of the life of the other part, the part life of the first part 16 is the first part 14. It is an integer multiple of. When the first part 16 is replaced, the first part 14 is also replaced at the same time, and the removal work of the first part 14 is not wasted. Therefore, the maintainability of the fuel cell system 100 is further improved.

(First embodiment)
Hereinafter, a fuel cell system according to an example of the first embodiment will be described. In addition, the following description is only description of an Example, Comprising: The structure of the fuel cell system concerning 1st Embodiment is not limited to this.

[Device configuration]
FIG. 3 is a perspective view showing the fuel cell system according to the first embodiment. FIG. 4 is a front view of a cross section showing the fuel cell system according to the first embodiment. FIG. 5 is a cross-sectional view of the fuel cell system according to the first embodiment as viewed from above. FIG. 6 is a side view showing a cross section of the fuel cell system according to the first embodiment. FIG. 7 is an exploded view showing the fuel cell system according to the first embodiment. Hereinafter, the fuel cell system according to the first embodiment will be described with reference to FIGS.

  4 is a cross-sectional view taken along line IV-IV in FIG. 5 is a cross-sectional view taken along line VV in FIG. 6 is a cross-sectional view taken along line VI-VI in FIG.

  As shown in FIGS. 3 to 7, the fuel cell system 200 of the first embodiment includes a first component group 10 a, 10 b, a second component 50, a fuel cell module 22, a housing 34, and a heat accumulator 40. It has. The first part group 10a includes three first parts 7a, 7b, and 7c. The first part group 10b includes three first parts 7d, 7e, and 7f.

  The fuel cell module 22 includes a reformer that generates a hydrogen-containing gas using raw material gas and water, and a fuel cell that generates electricity by reacting the hydrogen-containing gas and oxygen.

  The heat accumulator 40 is a hot water storage tank. The heat accumulator 40 collects the exhaust heat of the fuel cell module 22 and stores a heat medium as a part of the cogeneration system. As the heat medium, for example, water can be used.

  The housing 34 accommodates the fuel cell module 22, the first component groups 10a and 10b, and the heat accumulator 40. An opening 36 is formed in the housing 34. The opening 36 is provided with a detachable lid 9 so that the opening 36 can be closed.

  Each of the first component groups 10a and 10b is a group of first components whose component lifetime is an integral multiple of a predetermined number of years. In each of the first component groups 10a and 10b, the first component groups 10a and 10b are arranged linearly from the opening 36 of the housing 34 toward the back of the housing 34 in order from the one with the shortest component life.

  More specifically, as shown in FIG. 5, the first parts 7a, 7b, 7c belonging to the first part group 10a are arranged in this order from the opening 36 toward the back of the housing 34. The component life of the first component 7a is shorter than that of the first component 7b, and the component life of the first component 7b is shorter than that of the first component 7c.

  The first part 7a is a desulfurizer that removes sulfur compounds from the raw material gas. The component life of the first component 7a is 2 years.

  The first component 7b is a deionizer that generates pure water. The component life of the first component 7b is 4 years.

  The first component 7c is an air filter that removes particulate matter in the air. The component life of the first component 7c is 8 years.

  Further, as shown in FIG. 5, the first components 7d, 7e, and 7f belonging to the first component group 10b are arranged in this order from the opening 36 toward the back of the housing 34. The component life of the first component 7d is shorter than that of the first component 7e, and the component life of the first component 7e is shorter than that of the first component 7f.

  The first component 7d is a chemical filter that removes chemical substances (NOx and the like) in the air. The component life of the first component 7d is 3.5 years.

  The first component 7e is a gas sensor that detects the raw material gas. The component life of the first component 7e is 7 years.

  The first component 7f is a CO sensor that detects carbon monoxide (CO). The component life of the first component 7f is 7 years.

  The fuel cell module 22 and the heat accumulator 40 are arranged such that the heat accumulator 40 is located on the lower side in the vertical direction and the fuel cell module 22 is located on the upper side in the vertical direction. The first component groups 10a and 10b It is collected between the containers 40.

  The second component 50 has a component life longer than that of the fuel cell system 200. Unlike the first component 7, the second component 50 does not need to be replaced unless there is a failure before the fuel cell system is stopped. Similar to the first component 7, the fuel cell module 22 and the heat accumulator 40 are collected.

  The arrangement of the fuel cell module 22 and the heat accumulator 40 may be such that the fuel cell module 22 is below and the heat accumulator 40 is above, or the fuel cell module 22 and the heat accumulator 40 may be side by side. The first component 7 and the second component 50 may not be collected between the fuel cell module 22 and the heat accumulator 40. The fuel cell module 22 may be a SOFC type module having a reformer therein, or a different type fuel cell module.

[Operation / Action]
Hereinafter, the operation and action of the fuel cell system 200 of the first embodiment will be described.

  First, the user is instructed to start driving the fuel cell system 200 by pressing a start button or the like. Thereafter, water, air, and source gas are supplied to the fuel cell module 22. An electrochemical reaction proceeds inside the fuel cell module 22 to generate power. DC power obtained by power generation is supplied to a system power supply via a power conversion circuit (not shown). In this embodiment, a solid oxide fuel cell is used as the fuel cell included in the fuel cell module 22.

  In recent years, development of a solid oxide type (SOFC) in addition to a solid polymer type (PEFC) as a fuel cell cogeneration system for household use has been rapidly carried out. In SOFC, oxide ions generated at the air electrode (cathode) permeate the electrolyte and react with hydrogen at the fuel electrode to generate electric energy. Therefore, not only hydrogen but also carbon monoxide can be used as fuel. Therefore, high purity hydrogen is not required unlike PEFC.

  In addition, SOFC has a very high operating temperature of 600 to 700 ° C., and can easily heat city water. Therefore, the temperature of the hot water stored in the heat accumulator (hot water storage tank) 40 can be easily increased (for example, 70 to 75 ° C.), and the capacity of the heat accumulator (hot water storage tank) 40 can be significantly reduced (for example, about 1 / PE of PEFC). 3 to 70L). Furthermore, since a large hydrogen generator like PEFC is not required, the fuel cell system can be significantly downsized.

  The first component 7 must be replaced before the fuel cell system 200 is stopped when the life inherent to the fuel cell system 200 comes. Therefore, in order to maintain the fuel cell system 200 efficiently, it is necessary to efficiently replace the first component 7.

  Therefore, the first parts 7a, 7b, and 7c constituting the first first part group 10a have the first part 7a (part life: 2 years) having the shortest part life inside the housing 34 and the most opening 36. Place near. Next, the first component 7b (component lifetime: 4 years) whose component life is twice that of the first component 7a is arranged so as to be adjacent to the first component 7a on the back side of the first component 7a. Further, the first component 7b (component lifetime: 8 years), whose component life is four times that of the first component 7a and twice that of the first component 7b, is located on the back side of the first component 7b. So as to be adjacent to each other, that is, to be located at the innermost position. Accordingly, the first parts 7a, 7b, and 7c are arranged linearly in this order from the opening 36 toward the back of the housing 34.

  Further, the first parts 7d, 7e, and 7f constituting the second first part group 10b have the first part 7d (part life: 3.5 years) having the shortest part life inside the housing 34 and the most. Arranged near the opening 36. Next, the first component 7e (component lifetime: 7 years), whose component life is twice that of the first component 7d, is arranged so as to be adjacent to the first component 7d on the back side of the first component 7d. Further, the first part 7f (part life: 7 years) whose part life is twice that of the first part 7d is adjacent to the first part 7e on the back side of the first part 7e, that is, at the farthest side. Position it so that it is positioned. Thereby, the first components 7d, 7e, and 7f are arranged linearly in this order from the opening 36 toward the back of the housing 34.

  In such a configuration, when replacing the first component 7a, only the first component 7a needs to be accessed through the opening 36.

  When the first part 7b is replaced, the first part 7a is also replaced. Therefore, both the first part 7a and the first part 7b may be accessed through the opening 36. Neither the first part 7c nor the first parts 7d, 7e, 7f belonging to the other first part group 10b need to be accessed. The first component 7b is disposed immediately behind the first component 7a. Since the component life of the first component 7b is twice that of the first component 7a, when replacing the first component 7b, the first component 7a is also replaced at the same time. Therefore, after removing the first component 7a, the first component 7b can be easily accessed.

  When the first part 7c is replaced, the first part 7a and the first part 7b are also replaced. Therefore, all of the first part 7a, the first part 7b, and the first part 7c are accessed through the opening 36. However, it is not necessary to access the first components 7d, 7e, and 7f belonging to the other first component group 10b. The first component 7c is disposed immediately behind the first component 7b. The component life of the first component 7c is four times the component life of the first component 7a and twice the component life of the first component 7b. Therefore, when the first component 7c is replaced, The one part 7a and the first part 7b are also replaced at the same time. Therefore, after removing the first component 7a and the first component 7b, the first component 7c can be easily accessed.

  When replacing the first component 7d, only the first component 7d needs to be accessed through the opening 36.

  When the first part 7e is replaced, the first part 7d is also replaced. Therefore, both the first part 7d and the first part 7e need only be accessed through the opening 36. There is no need to access the first component 7f or the first components 7a, 7b, 7c belonging to the other first component group 10a. The first component 7e is disposed immediately behind the first component 7d. Since the component life of the first component 7e is twice that of the first component 7d, when replacing the first component 7e, the first component 7d is also replaced at the same time. Therefore, after removing the first component 7d, the first component 7e can be easily accessed.

  When the first part 7f is replaced, the first part 7d and the first part 7e are also replaced. Therefore, the first part 7d, the first part 7e, and the first part 7f are all accessed through the opening 36. However, it is not necessary to access the first parts 7a, 7b, 7c belonging to the other first part group 10a. The first component 7f is disposed immediately behind the first component 7e. Since the part life of the first part 7f is twice the part life of the first part 7d and is equal to the part life of the first part 7e, when replacing the first part 7f, the first part 7d The first part 7e is also replaced at the same time. Therefore, after removing the first component 7d and the first component 7e, the first component 7f can be easily accessed.

  Furthermore, the fuel cell module 22 and the heat accumulator 40 are arranged so as to be lined up and down in the vertical direction, and the first parts 7 are collected in the space between them. Therefore, the installation area can be significantly reduced as compared with the case where the fuel cell module 22 and the heat accumulator 40 are arranged side by side. By collecting the first component 7 between the fuel cell module 22 and the heat accumulator 40, wiring for connecting the first component 7 and the fuel cell module 22 and piping for connecting the first component 7 and the heat accumulator 40 are provided. Etc. are simplified and maintainability is improved.

  Similarly to the first component 7, the second component 50 is also disposed between the fuel cell module 22 and the heat accumulator 40. Therefore, even if the second component 50 is replaced due to a failure or the like, the housing The second part 50 can be exchanged through the 34 openings 36. By collecting the second component 50 between the fuel cell module 22 and the heat accumulator 40, wiring for connecting the second component 50 and the fuel cell module 22, etc., and piping for connecting the second component 50 and the heat accumulator 40 Etc. are simplified and maintainability is improved.

  As described above, the fuel cell system according to the present embodiment can achieve a fuel cell system with significantly improved maintenance that does not require an unreasonable part replacement operation while being made compact and compact.

  Also in the first example, the same modification as in the first embodiment is possible.

  From the foregoing description, many modifications and other embodiments of the present invention are obvious to one 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. The details of the structure and / or function may be substantially changed without departing from the spirit of the invention.

  One embodiment of the present invention is useful as a fuel cell system capable of improving maintainability.

7a 1st part 7b 1st part 7c 1st part 7d 1st part 7e 1st part 7f 1st part 9 lid 10 1st part group 10a 1st part group 10b 1st part group 12 1st part 14 1st part 16 First component 20 Fuel cell module 22 Fuel cell module 30 Housing 32 Opening 34 Housing 36 Opening 40 Heat accumulator 50 Second component 100 Fuel cell system 200 Fuel cell system

Claims (7)

A fuel cell system including a fuel cell module,
A plurality of first parts that are replaced when a part life elapses, and wherein the part life is shorter than a life of the fuel cell system;
A housing that accommodates at least the plurality of first parts and is provided with an opening for replacing the first parts;
When a group consisting of a part or all of the plurality of first parts is defined as a first part group, a part of the first part in which the greatest common divisor of the part life of the plurality of first parts belonging to the first part group is predetermined. Lifespan,
A plurality of first parts belonging to the first part group are arranged in order from a short part life to a long part from the opening toward the back of the housing.
Fuel cell system. In all pairs taken out from a plurality of first parts belonging to the same first part group, one part life is an integral multiple of the other part life.
The fuel cell system according to claim 1. The plurality of first parts form a plurality of the first part groups,
The greatest common divisor of the component life of the first component belonging to each first component group is different from each other for each first component group.
The fuel cell system according to claim 1 or 2. A heat accumulator for storing heat recovered from the fuel cell module;
A first part belonging to the first part group is disposed between the fuel cell module and the heat accumulator;
The fuel cell system according to any one of claims 1 to 3. The fuel cell module is disposed at least one of vertically above and vertically below the regenerator,
The fuel cell system according to claim 4. A second component having a component life equal to or greater than the life of the fuel cell system;
The second component is disposed between the fuel cell module and the heat accumulator;
The fuel cell system according to any one of claims 1 to 5. The second part is disposed at a position where it can be exchanged through the opening,
The fuel cell system according to claim 6.

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