JP2008117672A - Package type fuel cell power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To exhaust heat accumulated between a package wall surface and a shading plate to the outside of a package type fuel cell power generation device, to improve reduction of the capacity and power saving of a ventilation fan, and to ensure safety in summertime storage, in a package type fuel cell power generation device having a shading plate on a wall surface of a package. <P>SOLUTION: This package type fuel cell power generation device is composed by housing a fuel cell body, and various kinds of apparatuses such as other auxiliary apparatuses in the package 1, and further includes the ventilation fan 3 for exhausting heat in the package to the outside by ventilation air, and an electronic apparatus 4 for controlling/driving the apparatuses including the ventilation fan 3. The package type fuel cell power generation device is structured such that the shading plate 21 for moderating temperature rise in the fuel cell power generation device by insolation is arranged by forming a space between the wall surface of the package 1 and itself; and, by running a part of the ventilation air to the space formed between the shading plate 21 and the package wall surface, the heat in the space is exhausted to the outside of the package type fuel cell power generation device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention contains various devices such as a fuel cell main body and other auxiliary devices in a package, and further includes a ventilation fan for discharging the heat in the package to the outside by ventilation air, and the ventilation fan including the ventilation fan. The present invention relates to a package-type fuel cell power generator including an electronic device for controlling and driving the device. The present invention can also be applied to a fuel cell power generator when pure hydrogen is used as the fuel gas and no fuel reformer is provided, or when a fuel reformer is provided.

  The fuel cell power generation device is desired to be put into practical use in various fields as a highly efficient and clean power supply device. In particular, the spread of a fuel cell cogeneration system that is installed in a general household, a predetermined area, or an apartment house and that effectively uses the exhaust heat of the fuel cell power generator for hot water supply is expected in recent years. As the fuel cell power generation device as described above, a package type fuel cell power generation device in which various devices such as a fuel cell main body, a fuel reformer, a cooling water system device, and other auxiliary devices are accommodated in a package is generally used.

  There are various types of fuel cells incorporated in the fuel cell power generator, depending on the type of electrolyte, the type of reforming raw material, etc. For general household use, for example, a solid polymer membrane is used as the electrolyte and its operation A type of polymer electrolyte fuel cell having a relatively low temperature of about 80 ° C. is well known. For example, Patent Document 1 discloses a fuel cell power generator that combines a packaged polymer electrolyte fuel cell unit and a hot water tank unit. Patent Document 2 is known as an example of a package type fuel cell power plant having a larger capacity than that disclosed in Patent Document 1.

  In this type of conventional fuel cell power generator, when calculating the ventilation air volume in the package, the amount of heat radiated from the fuel cell main body and fuel reforming equipment installed in the package and the amount of heat input by solar radiation are appropriately calculated. A ventilation fan with a capacity that could be discharged outside was selected.

  Since the inflow heat amount due to solar radiation is proportional to the surface area exposed to solar radiation, the inflow heat amount due to solar radiation increases as the size of the package increases. Therefore, the capacity of the ventilation fan has to be increased accordingly. In addition, when storing the fuel cell power generator in a situation where the amount of heat entering the solar radiation is large in summer and the ventilation fan cannot be operated due to a power failure or the like, the temperature inside the fuel cell device rises because ventilation inside the package cannot be performed. However, this has been a cause of failure of electronic devices.

  FIG. 3 is a schematic configuration diagram of a conventional packaged fuel cell power generator. In FIG. 3, 1 is a package of the fuel cell power generator, 2 is an intake port disposed in the package 1 of the fuel cell power generator, 3 is a ventilation fan disposed in the package 1 of the fuel cell power generator, and 4 is a fuel cell. Electronic equipment for controlling or driving each device in the power generator, 11 is ventilation air ventilated by the ventilation fan 3, 12 is solar radiation inflow heat transferred to the package 1 by solar radiation, and 13 is solar heat.

  As shown in FIG. 3, in the conventional package type fuel cell power generation device, the package type fuel cell power generation appropriately generates heat radiated from the fuel cell main body, fuel reforming system, etc. installed in the package 1 and solar inflow heat 12. In order to discharge outside the apparatus, the ventilation fan 3 has a problem of a relatively large capacity. Further, when the fuel cell power generation device is stored in a power failure state in the summer, the ventilation fan 3 cannot be driven, so that there is a problem that the temperature in the package 1 rises and the electronic device or the like breaks down.

  By the way, Patent Document 3 is known for solving the above-mentioned problems. Patent document 3 quotes the summary sentence, “Even if the device is installed in any outdoor environment, the temperature in the housing does not exceed the operating temperature of various devices constituting the device. To provide an emergency fuel cell power generator capable of quickly starting a fuel cell to generate power and supplying power to a load when power supply is stopped, and a management method thereof. A fuel cell chamber in which a fuel cell is disposed in the main body, a hydrogen gas cylinder chamber in which a hydrogen gas cylinder containing hydrogen gas serving as fuel for the fuel cell is disposed, and when the supply of commercial power is stopped, it is detected, In an emergency fuel cell power generator that automatically starts a fuel cell and supplies generated power to an important load, the fuel cell is provided with a heat shield that blocks the solar radiation by providing a predetermined gap on the wall surface of the housing body. The temperature of the inner is provided with a control means for activating the fuel cell chamber ventilating fan for ventilating the fuel cell chamber When equal to or more than a predetermined temperature. "Discloses what.

FIG. 2 is a schematic configuration diagram of a packaged fuel cell power generator having a configuration basically similar to that disclosed in Patent Document 3 as a diagram corresponding to FIG. According to the configuration of FIG. 2, by providing the light shielding plate 21 on the outer periphery of the package 1 of the fuel cell power generation device, the solar heat 13 can be cut off and the solar heat inflow heat amount 12 can be reduced. Power saving can be achieved. In addition, there is an advantage that the temperature rise of the electronic device in the package can be suppressed even during storage during summer.
Japanese Patent Laid-Open No. 2005-63697 JP-A-10-289725 JP 2006-156116 A

  The conventional packaged fuel cell power generator as shown in FIG. 2 has the following problems, although there is an advantage that the capacity of the ventilation fan can be reduced and the power can be saved. That is, in the case of the configuration shown in FIG. 2, the air staying in the gap between the wall surface of the package 1 and the light shielding plate 21 is heated and the temperature in the package rises, so that the capacity of the ventilation fan needs to be increased accordingly. is there. In addition, there is a problem that the temperature rise of the electronic device becomes excessive in some cases, such as when there is strong solar radiation and the stop time is long during the storage stop in summer.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide heat that stays between a package wall surface and a light shielding plate in a packaged fuel cell power generation device that includes a light shielding plate on the wall surface of the package. Is to be able to be discharged outside the packaged fuel cell power generator, to further reduce the capacity and power consumption of the ventilation fan, and to ensure safety during summer storage.

  The above-mentioned subject is achieved by the following. That is, various devices such as a fuel cell main body and other auxiliary devices are accommodated in a package, and a ventilation fan for exhausting the heat in the package to the outside by ventilation air and the device including the ventilation fan are provided. In a package type fuel cell power generation device including an electronic device for controlling and driving, a light shielding plate for reducing a temperature rise in the fuel cell power generation device due to solar radiation with a gap between a wall surface of the package and And a part of the ventilation air is passed through a gap provided between the light shielding plate and the package wall surface, and the heat in the gap is discharged to the outside of the packaged fuel cell power generator. (Claim 1).

  As an embodiment of the invention of claim 1, the inventions of claims 2 to 3 below are preferable. That is, in the electronic device according to claim 1, the electronic device activates the ventilation fan when the temperature in the package reaches a predetermined upper limit temperature determined based on an allowable temperature of the device, It has a function of stopping when the lower limit temperature is reached (Claim 2). When the temperature in the package does not matter with respect to the upper limit temperature of the device, the ventilation fan can be stopped, so power saving can be achieved.

  Moreover, in the thing of the said Claim 1 or 2, the said light-shielding plate was comprised so that it could be removed from the said package wall surface (Claim 3), It is characterized by the above-mentioned. By providing a configuration in which the light shielding plate can be removed as necessary, it is possible to take measures against solar radiation according to the installation environment.

  According to the present invention, heat accumulated between the package wall surface and the light shielding plate can be discharged out of the packaged fuel cell power generation device. Therefore, compared to the conventional device, the capacity of the ventilation fan can be reduced and power can be saved. Thus, a packaged fuel cell power generation device can be provided which further enhances the above and ensures safety during summer storage.

  Next, an embodiment of the present invention will be described with reference to FIG. 1, members having the same functions as those shown in FIG. 2 are given the same reference numerals, and detailed descriptions thereof are omitted. The difference between FIG. 1 and FIG. 2 is that in the case of FIG. 1, the ventilation air diversion means 22 is provided so that the diversion ventilation air 23 can flow through the gap between the wall surface of the package 1 and the light shielding plate 21. The heat in the gap is discharged outside the packaged fuel cell power generator. Thereby, the capacity reduction and power saving of the ventilation fan 3 can be improved.

  Further, the ventilation fan 3 is activated when a temperature in the package 1 reaches a predetermined upper limit temperature by a temperature sensor (not shown) and the electronic device 4 and stops when the temperature reaches a predetermined lower limit temperature. Be controlled. Further, the light shielding plate 21 is installed so as to be removable from the package wall surface under an unnecessary environment.

1 is a schematic configuration diagram of a packaged fuel cell power generator according to an embodiment of the present invention. FIG. 6 is a schematic configuration diagram of a conventional improved package fuel cell power generator. The typical block diagram of the conventional package type fuel cell power generator.

Explanation of symbols

  1: Package, 2: Air intake, 3: Ventilation fan, 4: Electronic equipment, 11: Ventilation air, 12: Solar radiation inflow heat, 13: Solar heat, 22: Ventilation air diversion means, 23: Divergent ventilation air.

Claims (3)

Various devices such as a fuel cell main body and other auxiliary devices are housed in a package, and a ventilation fan for discharging the heat in the package to the outside by ventilation air, and the device including the ventilation fan are controlled and In a package-type fuel cell power generator including an electronic device for driving,
A light shielding plate for reducing a temperature rise in the fuel cell power generation device due to solar radiation is provided with a gap from the wall surface of the package, and a part of the ventilation air is disposed between the light shielding plate and the package wall surface. A package type fuel cell power generator configured to flow through the provided gap and to discharge the heat in the gap to the outside of the package type fuel cell power generator.   2. The electronic device according to claim 1, wherein the electronic device activates the ventilation fan when a temperature in a package reaches a predetermined upper limit temperature determined based on an allowable temperature of the device, and a predetermined lower limit temperature is set. A packaged fuel cell power generator having a function of stopping when it reaches.   3. The package type fuel cell power generator according to claim 1, wherein the light shielding plate is configured to be removable from the package wall surface.

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