JP2006143542A - Vessel for containing fuel reformer and fuel reforming device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vessel for containing a fuel reformer of low power generation loss with which the fuel reforming temperature of the fuel reformer can be maintained at a higher temperature, and a fuel reforming device. <P>SOLUTION: The vessel 11 for containing the fuel reformer includes a base body 1 having a recessed part in which the fuel reformer 9 to generate a reforming gas including gaseous hydrogen from fuel is contained, a discharge pipe 5b communicating the inside and outside of the recessed part in order to discharge the reformed gas from the fuel reformer 9, a supply pipe 5a communicating the inside and outside of the recessed part in order to supply the fuel to the fuel reformer 9, and a lead terminal 2 as a terminal for conduction to the fuel reformer 9 penetrating the base body 1 or a cover 4, in which the lead terminal 2 is fixed via a sealing material 8 to the inner side of cylindrical fittings 3, and the cylindrical fittings 3 are inserted into the through-holes formed in the base body 1 or the cover 4. and the cylindrical fittings 3 are joined to the base body 1 or the cover in such a manner that voids 13 are formed between their outer surfaces and the inner surfaces of the through-holes. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fuel reformer storage container and a fuel reformer for constituting a fuel reformer using a fuel reformer that generates hydrogen gas from various fuels in a fuel cell system, for example.

  In recent years, fuel cell systems have been in the limelight as next-generation power systems that produce electric energy efficiently and cleanly. In the cogeneration power generation system market, which is already represented by the automobile market and household fuel cell power generation systems. In the field, field tests for practical application aiming at low cost are actively conducted.

  More recently, the fuel cell system has been reduced in size and is being studied for use as a power source for portable devices such as mobile phones, PDAs (Personal Digital Assistants), notebook computers, digital video cameras, and digital still cameras.

  In general, a fuel cell uses, for example, hydrocarbon gas such as methane or natural gas (CNG) or alcohol such as methanol or ethanol as fuel, and is converted to hydrogen gas or other gas by a fuel reformer using a fuel reformer. Then, the hydrogen gas is supplied to a power generation device called a power generation cell to generate power.

  The reforming of fuel by the fuel reformer here refers to a process of generating hydrogen gas by a catalytic reaction.

For example, when methanol is used as the fuel, there are several reactions for reforming the fuel. For example, in the steam reforming reaction shown in the following chemical reaction formula (1) (in formula (1), steam is added to methanol. This is a process for generating hydrogen gas (H ₂ ) by combining them with a reaction to reform hydrogen and carbon dioxide. Note that a very small amount of product gas (mainly CO ₂ ) other than hydrogen produced by this reforming reaction is usually discharged into the atmosphere.

CH ₃ OH + H ₂ O → 3H ₂ + CO ₂ (1)
Since such a steam reforming reaction is an endothermic reaction, it is necessary to maintain the reaction temperature by heating from the outside with a heater or the like. Therefore, in order to reform the fuel in the fuel reformer, for example, methanol was used as the fuel in order to prevent the steam reforming activity of the catalyst from being lowered and to maintain a high concentration of generated hydrogen gas. In some cases, a temperature of about 200 to 500 ° C. is required, and in the case of using methane gas, a high temperature of about 300 to 800 ° C. is required.

  For example, in the partial oxidation reforming reaction as shown in the following chemical reaction formula (2), a reforming temperature of about 400 to 600 ° C. is required.

CH ₃ OH + 1 / 2O ₂ + 2N ₂ → 2H ₂ + CO ₂ + 2N ₂ (2)
Therefore, in a cogeneration power generation system typified by a household fuel cell system, since this system itself is large, the outer wall of the fuel reformer storage container is made into a double structure to form a vacuum container, or 2 By filling a heat insulating material between the inner and outer walls having a heavy structure, the heat inside the fuel reformer is prevented from being conducted to the outside and the temperature of the fuel reformer is lowered. Therefore, when storing the fuel reformer in the fuel reformer storage container, the fuel reformer can be directly mounted and fixed on the inner wall of the double structure of the fuel reformer storage container. It is.
JP 2003-2602 A

  In recent years, fuel cell systems for portable devices have been required to be reduced in size and height for storage in portable devices. However, the conventional structure of the outer wall of the fuel reformer storage container having a double structure cannot be employed in a fuel cell system for portable devices because the entire fuel cell system becomes complicated and large. . Therefore, for the fuel cell system for portable devices, by making the inside of the fuel reformer storage container consisting of a base body having a recess and a lid, a vacuum state, or by using a material having a lower thermal conductivity, It has been proposed to provide a fuel cell system in which heat generated when reforming a fuel in a fuel reformer is cut off to the outside and power generation loss is reduced.

  In order to use such a fuel cell system stably and safely for a long period of time, it is necessary to maintain a vacuum state inside the fuel reformer storage container for a long period of time, and at the same time, reform the fuel in the fuel reformer. It is necessary to reduce the amount of heat generated when the heat is transferred to the outside. In order to reduce the amount of heat transfer from the fuel reformer to the outer wall of the fuel reformer storage container, an insulating material such as ceramics is used for joining the lead terminal for energization to the fuel reformer and the base body. There has been a technique of increasing the distance between the lead terminal for energization and the base by increasing the outer shape of the ceramic and reducing the amount of heat transfer to the base. However, increasing the distance between the lead terminal for energization and the base body tends to increase the container for housing the fuel reformer, and as a device used in a fuel cell system for portable equipment, it is reduced in size and height. There has been a problem that it becomes an obstacle to carrying out and unsuitable for use as a portable device. In addition, if the reforming temperature of the fuel reformer is lowered to reduce the amount of heat transfer from the fuel reformer, high efficiency fuel reforming cannot be performed, resulting in a fuel cell system with low power generation efficiency. It was.

  The present invention has been completed in view of the above-described problems in the prior art, and an object of the present invention is to provide a fuel reformer that can maintain the fuel reforming temperature of the fuel reformer at a higher temperature and has low power generation loss. An object of the present invention is to provide a container for storing a quality device and a fuel reformer.

  The fuel reformer storage container of the present invention includes a base body having a recess in which a fuel reformer that generates reformed gas containing hydrogen gas from fuel is stored, and the reformed gas from the fuel reformer. A discharge pipe that communicates the inside of the recess with the outside to discharge the fuel, a supply pipe that communicates the interior of the recess with the outside to supply the fuel to the fuel reformer, and the base body or the lid body. A fuel reformer storage container having a lead terminal for energizing the fuel reformer, wherein the lead terminal is fixed to the inside of the cylindrical metal fitting through a sealing material, and the cylindrical metal fitting Is inserted into a through hole formed in the base body or the lid body, and the cylindrical fitting is joined to the base body or the lid body so as to form a gap between the outer surface and the inner surface of the through hole. It is characterized by.

  In the fuel reformer storage container of the present invention, preferably, the cylindrical metal fitting has a flange portion projecting outward at a tip portion thereof, and the flange portion and the base body or the lid body are joined. It is characterized by.

  The fuel reformer of the present invention includes a fuel reformer storage container of the present invention, a fuel reformer stored in the recess, and an upper surface of the base so as to close the opening of the recess. And an attached lid.

  A fuel reformer storage container according to the present invention fixes a lead terminal to the inside of a cylindrical metal fitting through a sealing material, and inserts the cylindrical metal fitting into a through-hole formed in a base body or a lid. Since the metal fitting is joined to the base or the lid so as to form a gap between the outer surface and the inner surface of the through hole, the heat from the fuel reformer is transferred from the lead terminal to the sealing material and from the sealing material. Even if it is transmitted to the cylindrical metal fitting, it becomes possible to extremely effectively reduce the amount of heat transmitted to the subsequent substrate.

  As a result, when the fuel reforming reaction is an endothermic reaction such as the steam reforming reaction of the chemical reaction formula (1), the amount of heat generated when reforming the fuel in the fuel reformer to the outside Therefore, the temperature of the fuel reformer does not decrease, and as a result, it is not necessary to increase the heating value of the heater, and the power generation loss of the entire fuel cell system does not increase. A battery system can be achieved.

  In addition, since the amount of heat transfer from the fuel reformer to the base body and the lid can be reduced, it is possible to effectively suppress the temperature of the outer wall surface of the fuel reformer storage container from being increased. It is possible to effectively prevent destruction of other components within the device and to cause burns to the user of the portable device, and the fuel cell system can be used stably and safely over a long period of time.

  In the fuel reformer storage container according to the present invention, the cylindrical metal fitting has a flange portion projecting outward at the tip, and the flange portion and the base or lid are joined together. Even if stress is applied to the terminal, the stress can be relieved by appropriately deforming the base of the flange portion, and the joining between the cylindrical metal fitting and the base body or the lid can be maintained well over a long period of time.

  The fuel reformer of the present invention is attached to the upper surface of the substrate so as to close the opening of the fuel reformer, the fuel reformer stored in the recess, and the recess of the present invention. Therefore, it is possible to achieve a fuel cell system that is stable and safe for a long time and that is highly efficient.

  Embodiments of the fuel reformer storage container of the present invention will be described in detail below.

  FIG. 1 is a cross-sectional view showing an example of an embodiment of a fuel cell storage container according to the present invention. 1 is a base body, 2 is a lead terminal as a wiring, 3 is a cylindrical metal fitting for fixing the lead terminal 2 to the through hole of the base body 1, 4 is a lid, 5a is for supplying fuel to the fuel reformer The supply pipe, 5b is a discharge pipe for discharging the reformed gas reformed by the fuel reformer, 7 is an electrode, and 8 is for sealing and fixing the lead terminal 2 inside the cylindrical fitting 3 while insulating. 9 is a fuel reformer, and a fuel reformer housing container 11 for housing the fuel reformer 9 is mainly composed of the base body 1, the lid body 4, the supply pipe 5a and the discharge pipe 5b. Is done.

  FIG. 2 is an enlarged cross-sectional view of a main part of a joint portion between the base 1 and the cylindrical metal fitting 3 in which the lead terminal 2 of the present invention is sealed and fixed with a sealing material 8. In FIGS. 1 and 2, as an example of an embodiment of the cylindrical metal fitting 3, a tip provided with a brim portion is shown. Reference numeral 10 denotes a cylindrical portion of the cylindrical metal fitting 3, and 12 denotes a flange portion of the cylindrical metal fitting 3. The input / output terminal for fixing the lead terminal 2 with the cylindrical metal fitting 3, the lead terminal 2 and the sealing material 8. Acts as a member. Reference numeral 13 denotes a gap between the cylindrical portion 10 of the cylindrical metal fitting 3 and the through hole of the base 1.

Both the base body 1 and the lid body 4 in the present invention have a role as a container for storing the fuel reformer 9. These include, for example, Fe-based alloys such as SUS, Fe—Ni—Co alloy, and Fe—Ni alloy, metal materials such as oxygen-free copper, aluminum oxide (Al ₂ O ₃ ) sintered body, mullite (3Al ₂ Ceramic materials such as O ₃ .2SiO ₂ ) sintered body, silicon carbide (SiC) sintered body, aluminum nitride (AlN) sintered body, silicon nitride (Si ₃ N ₄ ) sintered body, and glass ceramics In addition, it is made of a highly heat-resistant resin material such as polyimide.

The glass ceramics applicable to the substrate 1 and the lid 4 are composed of a glass component and a filler component. As the glass component, for example, SiO ₂ —B ₂ O ₃ system, SiO ₂ —B ₂ O ₃ —Al ₂ O ₃ system, SiO ₂ —B ₂ O ₃ —Al ₂ O ₃ —MO system (where M is Ca, Sr, Mg, Ba or Zn), SiO ₂ —Al ₂ O ₃ —M ¹ O—M ² O system (where M ¹ and M ² are the same or different and Ca, Sr, Mg, Ba or Zn), SiO ₂ —B ₂ O ₃ —Al ₂ O ₃ —M ¹ O—M ² O system (where M ¹ and M ² are the same as above), SiO ₂ —B ₂ O ₃ — M ³ ₂ O system (where M ³ represents Li, Na or K), SiO ₂ —B ₂ O ₃ —Al ₂ O ₃ —M ³ ₂ O system (where M ³ is the same as above) , Pb glass, Bi glass and the like.

Examples of the filler component include a composite oxide of Al ₂ O ₃ , SiO ₂ , ZrO ₂ and an alkaline earth metal oxide, a composite oxide of TiO ₂ and an alkaline earth metal oxide, Al ₂ O _3. And composite oxides containing at least one selected from SiO ₂ (for example, spinel, mullite, cordierite) and the like.

  On the other hand, when the base 1 and the lid 4 are formed of a dense aluminum oxide sintered body having a relative density of 95% or more, for example, first, rare earth oxide powder or aluminum oxide powder is added to the aluminum oxide powder. A raw material powder of an aluminum oxide sintered body is prepared by adding and mixing a sintering aid such as the above. Next, an organic binder and a dispersion medium are added to the raw material powder, mixed to form a paste, and this paste is green by a doctor blade method, or an organic binder is added to the raw material powder, press forming, rolling forming, etc. A sheet is produced. Then, after aligning a predetermined number of sheet-like molded bodies and laminating and pressure-bonding, the laminated body is fired at a firing maximum temperature of 1200 to 1500 ° C., for example, in a non-oxidizing atmosphere, and the target ceramic A base body 1 and a lid 4 made of the product are obtained. The base 1 and the lid 4 may be molded by a powder molding press method.

  On the other hand, when the base 1 and the lid 4 are made of a metal material, they are formed into a predetermined shape by a cutting method, a press method, a MIM (Metal Injection Mold) method, or the like.

  Further, when the base 1 and the lid 4 are made of a metal material, the surface thereof is subjected to a coating treatment such as Au or Ni plating or a resin coating such as polyimide in order to prevent corrosion. Is desirable. For example, in the case of Au plating treatment, the thickness is desirably about 0.1 to 5 μm.

  The base body 1 and the lid body 4 as described above should be thin in order to make the fuel reformer storage container 11 small and low in profile, but are bent with mechanical strength. The strength is preferably 200 MPa or more.

  Next, the lead terminal 2 in the present invention is preferably made of a metal that is the same as or similar to the thermal expansion coefficient of the base 1, the cylindrical fitting 3, the lid 4, and the fuel reformer 9, for example, Fe-Ni. An alloy or an Fe-Ni-Co alloy is preferable in that it can effectively prevent the occurrence of thermal strain against temperature changes during practical use. In addition, a good sealing property with the cylindrical metal fitting 3 can be obtained, and a strength necessary for mounting with the fuel reformer 9 and a good solderability and weldability can be secured.

  The sealing material 8 is made of an insulating material such as insulating glass or resin. Insulating glass is preferable from the viewpoint of high sealing reliability and low thermal conductivity. When the sealing material 8 is made of insulating glass, for example, borosilicate glass, alkali glass, lead oxide glass containing lead as a main component, or the like can be used.

  Then, the lead terminal 2 is fixed inside the cylindrical metal fitting 3 in a state of being electrically insulated from the cylindrical metal fitting 3 by the sealing material 8, and the cylindrical metal fitting 3 is brazed or welded to the base body 1 or the lid body 4. The lead terminal 2 is fixed to the fuel reformer storage container 11 by being joined by joining with an adhesive or the like.

  Further, the electrode 7 on the fuel reformer 9 and the lead terminal 2 are electrically connected, and the recess of the base body 1 is sealed by using the lid 4, whereby the recess of the fuel reformer storage container 11 is sealed. A fuel reformer 9 is formed in which the fuel reformer 9 accommodated therein is hermetically sealed.

  The cylindrical metal fitting 3 of the present invention has a circular or polygonal cross section. Preferably, as shown in FIGS. 1 and 2, a flange portion 12 is provided at the tip of the cylindrical portion 10. Thereby, even if stress is applied to the lead terminal 2, the stress can be relieved by appropriately deforming the base of the flange portion 12, and the joining between the cylindrical metal fitting 3 and the base body 1 or the cover body 4 can be performed over a long period of time. It can be maintained well.

  In addition, the cylinder part 10 and the collar part 12 may be formed integrally, and may be joined by brazing, welding, etc.

  The cylindrical portion 3 is preferably made of a metal that is the same as or close to the thermal expansion coefficient of the base body 1, the lead terminal 2, and the lid body 4. For example, the cylindrical portion 3 is made of Fe—Ni alloy or Fe—Ni—Co alloy. It is possible to prevent the occurrence of thermal strain with respect to temperature changes during practical use. In addition, good sealing properties with the substrate 1 can be obtained. The cylindrical metal fitting 3 is formed into a predetermined shape by a cutting method, a press method, a MIM (Metal Injection Mold) method, or the like.

  And the cylindrical metal fitting 3 is joined so that the space | gap 13 may be formed between the base | substrate 1 and the through-hole formed in the cover body 4. FIG. For example, as shown in FIGS. 1 and 2, such a gap 13 joins the flange portion 12 to the edge of the through hole of the base body 1 or the lid body 4 when the cylindrical fitting 3 has the flange portion 12. Thereby, the space | gap 13 can be formed between the cylindrical metal fitting 3 and the inner surface of a through-hole.

  Further, as shown in FIG. 3, the gap 13 may be formed by joining only a part of the outer surface of the cylindrical metal fitting 3 to the inner surface of the through hole of the base body 1 or the lid body 4 via a brazing material 14. . Furthermore, as shown in FIG. 4, a step may be provided in the through hole of the base body 1 or the lid 4, and the tip of the cylindrical metal fitting 3 may be joined to the step by brazing or welding.

  The inner diameter of the cylindrical portion 10 of the cylindrical metal fitting 3 is preferably an inner diameter that can ensure 0.2 mm or more with respect to the diameter of the lead terminal 2 so as not to be electrically connected to the lead terminal 2. Moreover, it is preferable that the metal fitting thickness of the cylinder part 10 is 0.1 mm or more in order to ensure strength. Further, the axial length of the cylindrical portion 10 is preferably equal to or less than the thickness of the base body 1 and the lid body 4 in assembling the cylindrical metal fitting 3 to the base body 1 and the lid body 4.

  In addition, the outer diameter of the flange portion 12 is smaller than the diameter of the through hole of the base body 1 and the lid body 4 into which the cylindrical metal fitting 3 is inserted in order to prevent deformation of the flange portion 12 in operations such as brazing and welding. It is preferable to increase it by 1 mm or more. Moreover, it is preferable that the thickness of the collar part 12 shall be 0.1 mm or more in order to prevent a deformation | transformation. Moreover, in order to join with the base | substrate 1 by a welding method, it is preferable to provide a projection in the collar part 12 of the cylindrical metal fitting 3. FIG.

  The width of the gap 13 between the outer surface of the cylindrical metal fitting 3 and the inner surface of the through hole of the base body 1 or the lid body 4 is preferably 0.01 mm or more, more preferably 0.01-0. It should be 3 mm. If it is less than 0.01 mm, there is a risk that the cylindrical metal fitting 3 may come into contact with the inner surface of the through-hole when the cylindrical metal fitting 3 is inserted into the base body 1 or the lid body 4, or between the cylindrical metal fitting 3 and the through-hole. There is a possibility that it is difficult to secure the gap 13 because the brazing material such as Au—Sn or Ag—Cu is filled in the gap 13 by capillary action. As a result, heat from the fuel reformer 9 is transmitted from the lead terminal 2 and the sealing material 8 to the cylindrical metal fitting 3 and then transmitted to the base body 1, whereby the surface of the outer wall surface of the fuel reformer storage container 11 is transmitted. The temperature rises, and other parts in the portable device are destroyed, or the user of the portable device is easily burned. On the other hand, when the thickness is 0.3 mm or more, it becomes difficult to braze the cylindrical metal fitting 3 to the inner surface of the through hole of the base body 1 or the lid body 4, and when the cylindrical metal fitting 3 has the flange portion 12. The collar portion 12 tends to be large, and the collar portion 12 tends to be easily deformed. Further, the fuel reformer storage container 11 itself tends to be large, which becomes an obstacle to downsizing and low profile.

  The fuel reformer 9 housed in the fuel reformer housing container 11 of the present invention is a device for reforming fuel, and a fine flow in which a catalyst for reforming fuel is carried. Has a path or gap.

  The shape of the fuel reformer 9 is various. For example, as a fine chemical device, by applying a semiconductor manufacturing technology or the like, for example, a semiconductor such as silicon, a substrate of an inorganic material such as quartz, glass, metal, ceramics, A liquid flow path is created by forming a narrow groove by a cutting method, etching method, blasting method, etc., and for the purpose of preventing evaporation of the liquid during operation, a glass plate, a metal cover, etc. are anodic bonded, brazed, For example, a substantially rectangular shape is used which is used in close contact with the surface by welding or the like. Moreover, it is a tube made of an inorganic material such as quartz, glass, metal, ceramics, etc., and the inner surface of which is supported with a catalyst for reforming the fuel.

  When the fuel reforming reaction is an endothermic reaction such as a steam reforming reaction, the fuel reformer 9 has a temperature control mechanism, for example, a thin film heater (not shown) or a thick film heater (not shown) composed of a resistance layer or the like. The electrode 7 is formed on the surface as a terminal for supplying power to the heater. By adjusting the temperature condition to about 200 to 800 ° C. corresponding to the fuel reforming condition by this temperature adjusting mechanism, the fuel supplied from the fuel supply port to which the supply pipe 5a is connected is caused to react with the water vapor. The reforming reaction for generating hydrogen gas from the discharge pipe 5b connected to the discharge port can be favorably promoted.

  Such a heater is disposed in or near the flow path, the gap, or the like where the catalyst in the fuel reformer 9 is supported and reforms the fuel. By doing so, the heat generated from the heater can be efficiently used for the fuel reforming reaction.

  The fuel reformer 9 has a cover 4 attached to the base 1 so as to cover the concave portion by bonding with a metal brazing material such as Au alloy, Ag alloy, Al alloy, or a glass material, or by a seam weld method. The fuel reformer is stored in the container 11 for storing the fuel reformer.

  For example, in the case of joining with an Au—Sn brazing material, an Au—Sn brazing material formed by welding a Au—Sn brazing material to the lid 4 in advance or punching using a die or the like is used. After the material is placed between the base body 1 and the lid body 4, the lid body 4 is joined to the base body 1 by a sealing furnace or a seam welder to thereby reform the fuel inside the fuel reformer storage container 11. The vessel 9 can be sealed.

  In the fuel reformer 9, the electrode 7 on the fuel reformer 9 is electrically connected to the lead terminal 2 provided on the base 1. Thereby, the heater formed on the surface or inside of the fuel reformer 9 can be heated through the electrode 7. As a result, the reaction temperature can be maintained in the fuel reformer 9, and the fuel reforming reaction can be stabilized.

The supply pipe 5a and the discharge pipe 5b are a supply path for raw materials and fuel gas fluid and a discharge path for reformed gas containing hydrogen, respectively. These include, for example, Fe-Ni alloy, Fe-Ni-Co alloy, a metal material such as SUS, _Al 2 _{O 3} sintered _material, 3Al ₂ O 3 · 2SiO ₂ sintered material, SiC sintered material, It is formed of a ceramic material such as an AlN sintered body, a Si ₃ N ₄ sintered body, a glass ceramic sintered body, a highly heat resistant resin material such as polyimide, or glass.

  Preferably, it is difficult to be embrittled by hydrogen contained in the reformed gas. Such materials include Fe alloys, ceramics, and glass.

  In order to obtain heat insulation in the fuel reformer storage container 11, it is necessary to evacuate the fuel reformer storage container 11. When the fuel reformer 9 is sealed, a vacuum furnace is used. It may be performed by sealing with a brazing material or by a seam weld method in a vacuum chamber.

  In addition, this invention is not limited to the example of the above embodiment, A various change may be added in the range which does not deviate from the summary of this invention. For example, in the example shown in FIG. 1, a fuel in which a cylindrical metal fitting 3 having a lead terminal 2 sealed and fixed by a sealing material 8 is joined to a lower surface through hole of the base 1 and mounted in a recess of the base 1. Although electrically connected to the reformer 9, it may be joined to a through hole formed in the side surface of the substrate 1 or a through hole formed in the lid body 4. Further, the electrode 7 on the fuel reformer 9 and the lead terminal 2 may be electrically connected via a bonding wire.

It is sectional drawing which shows an example of embodiment of the container for fuel reformer accommodation of this invention. FIG. 2 is an enlarged cross-sectional view of a main part of a joint portion between a cylindrical metal fitting and a base in the fuel reformer storage container of FIG. 1. It is a principal part expanded sectional view of the junction part of the cylindrical metal fitting and a base | substrate in the other example of embodiment of the fuel reformer storage container of this invention. It is a principal part expanded sectional view of the junction part of the cylindrical metal fitting and a base | substrate in the other example of embodiment of the fuel reformer storage container of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Base | substrate 2 ... Lead terminal 3 ... Cylindrical metal fitting 4 ... Lid body 5a ... Supply pipe 5b ... Discharge pipe 8 ... ··· Sealing material 9 ··· Fuel reformer 11 ··· Fuel reformer storage container 13 ··· Air gap

Claims (3)

A base having a recess in which a fuel reformer that generates reformed gas containing hydrogen gas from fuel is stored, and the inside of the recess and the outside communicate with each other to discharge the reformed gas from the fuel reformer. A discharge pipe for supplying the fuel to the fuel reformer, a supply pipe for communicating the inside of the recess with the outside, and for supplying electricity to the fuel reformer penetrating the base or the lid A fuel reformer storage container having a lead terminal, wherein the lead terminal is fixed to the inside of the cylindrical fitting through a sealing material, and the cylindrical fitting is formed in the base body or the lid body. A fuel reformer storage container, wherein the cylindrical metal fitting is joined to the base body or the lid body so as to form a gap between an outer surface thereof and an inner surface of the through hole. 2. The fuel reformer according to claim 1, wherein the cylindrical metal fitting has a flange portion projecting outward at a tip portion thereof, and the flange portion and the base body or the lid body are joined. Container for container storage. The fuel reformer storage container according to claim 1, the fuel reformer stored in the recess, and attached to the upper surface of the base so as to close the opening of the recess. A fuel reformer comprising a lid.

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