fuel cell device

Abstract

To provide a highly reliable fuel cell device by reducing defects related to heat radiation and ventilation.SOLUTION: A fuel cell device 100 includes a ventilation fan 17 for ventilation inside an exterior case 40, and the exterior case 40 includes a ventilation intake port 41 that takes in air for ventilation, a heat radiation intake port 42 that takes in air to be supplied to a heat radiator 5, and an exhaust port 43 that discharges the air that has passed through the heat radiator 5 and the ventilation air. The number of exhaust ports 43 is reduced by discharging the air that has passed through the radiator 5 and the ventilation air from the common exhaust port 43 while ensuring heat radiation and ventilation, it is possible to suppress the intrusion of rainwater, garbage, and the like, such that the reliability of the device can be improved by reducing defects related to heat radiation and ventilation.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a fuel cell device.

Background Art

[0002] There is known a fuel cell device that includes a fuel cell module that generates electricity using a fuel gas containing hydrogen and an oxygen-containing gas (air) and supplies electricity to the outside. In such a fuel cell device, in addition to the fuel cell module, auxiliary devices such as a heat exchanger, a supply power adjustment unit, a radiator, a water tank, a fuel pump for feeding fuel gas into the fuel cell module, and a blower for feeding air into the fuel cell module are built into an exterior case.

[0003] The radiator includes a radiator fan, takes in radiator air from a radiator intake provided in the exterior case, and discharges the air after passing through the radiator from a radiator exhaust.

[0004] In addition, the fuel cell module becomes high temperature during power generation and releases heat. If the ambient temperature inside the exterior case increases due to heat dissipation from the fuel cell module, it may affect the life of the auxiliary devices. Therefore, a ventilation fan is provided to ventilate the inside of the exterior case. In addition, the exterior case is provided with a ventilation intake and a ventilation exhaust, and is configured to take in ventilation air from the ventilation intake by rotating the ventilation fan and discharge it from the ventilation exhaust (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The fuel cell device's outer casing has multiple intake ports for drawing in outside air and exhaust ports for expelling air. However, if rainwater or debris enters through these ports, it may reduce the reliability of the device. Furthermore, insufficient ventilation inside the outer casing can cause the internal temperature of the device to rise, negatively impacting the lifespan of auxiliary components.

[0007] The present invention aims to solve the above problems and to provide a highly reliable fuel cell device by reducing malfunctions related to heat dissipation and ventilation. [Means for solving the problem]

[0008] This invention relates to a fuel cell module, A heat exchanger that exchanges heat between the waste heat of the fuel cell module and the medium, A heat storage tank for storing the medium heated by heat exchange in the heat exchanger, A radiator that performs heat exchange between the medium and air, and a heat sink equipped with a heat dissipation fan that generates airflow and cools the medium flowing through the heat exchanger, The aforementioned medium circulates through the heat exchanger, the heat storage tank, and the heat radiator in a circulation line, An outer casing that houses at least the fuel cell module, the heat exchanger, the heat radiator, and a portion of the circulation line, The exterior case is equipped with a ventilation fan for ventilating the inside of the outer casing. 、 The outer casing comprises a ventilation intake port for taking in ventilation air, a heat dissipation intake port for taking in air to be supplied to the heat radiator, and an exhaust port for discharging the air that has passed through the heat radiator and the ventilation air, The heat sink houses the radiator and the heat dissipation fan, and includes a duct that forms an air passage between the heat dissipation intake port and the exhaust port. The duct has an inlet through which ventilation air flows in. The cooling fan is provided downstream of the radiator. The inlet is located downstream of the radiator and outside the region connecting the outer shape of the cooling fan and the outer shape of the intake opening of the duct. It is a fuel cell device. [Effects of the Invention]

[0009] By configuring as described above, while ensuring heat dissipation and ventilation, the number of exhaust ports can be reduced, so that problems related to heat dissipation and ventilation can be reduced and the reliability of the device can be improved.

Brief Description of the Drawings

[0010] [Figure 1] It is a system configuration diagram showing an example of the system configuration of a fuel cell device. [Figure 2] It is a schematic configuration diagram of a fuel cell device according to the first embodiment. [Figure 3] It is a schematic configuration diagram of a fuel cell device according to the second embodiment [Figure 4] It is a perspective view of a radiator. [Figure 5] It is an exploded configuration diagram of a radiator. [Figure 6] It is a schematic configuration diagram of a fuel cell device according to the third embodiment. [Figure 7] It is a schematic configuration diagram of a fuel cell device according to the fourth embodiment [Figure 8] It is a schematic configuration diagram of a fuel cell device according to the fifth embodiment

Modes for Carrying Out the Invention

[0011] Embodiments of the present invention considered to be suitable will be briefly described while showing the operation of the present invention.

[0012] A fuel cell device that houses at least a part of a fuel cell module, a heat exchanger, a radiator, and a circulation line in an exterior case, and includes a ventilation fan for ventilating the interior of the exterior case. The exterior case has a ventilation intake for taking in ventilation air, a heat dissipation intake for taking in air to be supplied to the radiator, and an exhaust port for discharging the air that has passed through the radiator and the ventilation air. Thereby, while ensuring heat dissipation and ventilation, by discharging the air that has passed through the radiator and the ventilation air from a common exhaust port, the number of exhaust ports can be reduced and the intrusion of rainwater, dust, etc. can be suppressed. Therefore, problems related to heat dissipation and ventilation can be reduced and the reliability of the device can be improved.

[0013] Further, the radiator houses a radiator and a cooling fan, and includes a duct that forms an air flow path between an intake port for heat dissipation and an exhaust port. The duct has an inlet through which ventilation air flows. Thus, since the ventilation air can be made to flow into the duct and guided to the exhaust port, exhaust can be efficiently performed.

[0014] Also, a cooling fan is provided downstream of the radiator, and the inlet is provided downstream of the radiator. Although the temperature of the ventilation air rises as it passes through the housing, since the ventilation air flows into the duct downstream of the radiator, it does not interfere with the cooling of the radiator. Therefore, there is no risk of reducing the cooling efficiency.

[0015] Also, the inlet is provided outside the region connecting the outer shape of the cooling fan and the outer shape of the intake opening of the duct. The ventilation air can be made to merge into the duct without disturbing the air flow of the heat dissipation air passing through the fan from the radiator.

[0016] Also, the ventilation intake port is provided at the upper part of the exterior case, and the intake port for heat dissipation and the exhaust port are provided at the lower part of the exterior case. By increasing the distance between the ventilation intake port and the exhaust port, the ventilation efficiency can be increased.

Example

[0017] Hereinafter, an example embodiment of the present invention will be described with reference to the drawings.

[0018] FIG. 1 is a system configuration diagram showing an example of the system configuration of a fuel cell device. The fuel cell device 100 includes a fuel cell module 1, and a plurality of auxiliary machines such as a first heat exchanger 2, a heat storage tank 3, a condensed water tank 4, a radiator 5, an air supply device 14, a fuel supply device 15, and a reformed water supply device 16 for operating the fuel cell module 1 are housed in an exterior case 50. It is not necessary to house all of the above-described devices in the exterior case 50. For example, the first heat exchanger 2 and the heat storage tank 3 may be provided outside the exterior case 50. Also, a fuel cell device in which some of the above-described devices are omitted is also possible.

[0019] The fuel cell module 1 is constructed by housing a fuel cell 11 that generates electricity using fuel gas and oxygen-containing gas, and a reformer 12 that generates the fuel gas supplied to the fuel cell 11, inside a box-shaped storage container 10.

[0020] The configuration of the fuel cell 11 is not particularly limited, but for example, it may have a cell stack structure in which multiple fuel cell cells are arranged. The fuel cell 11 with a cell stack structure is constructed, for example, by fixing the lower end of each fuel cell to a manifold using an insulating bonding material such as a glass seal material.

[0021] The reformer 12 steam reforms raw fuel gases such as natural gas and LPG to produce fuel gas supplied to the fuel cell 11. The reformer 12 is connected to a fuel supply device 15 that supplies raw fuel gas and a reformed water supply device 16 that supplies reformed water. The raw fuel gas and reformed water undergo a reforming reaction in the heated reformer 12 to produce fuel gas containing hydrogen.

[0022] The fuel cell 11 is supplied with fuel gas produced in the reformer 12 and air (oxygen-containing gas) introduced by the air supply device 14. As the fuel gas passes through the fuel cell cell, it reacts with the oxygen-containing gas to generate electricity. The fuel gas and oxygen-containing gas that are not used for power generation merge and burn at the top of the fuel cell 11. This combustion of fuel gas generates high-temperature exhaust gas, which heats the reformer 12. The exhaust gas generated in this way within the fuel cell module 1 is supplied to the first heat exchanger 2.

[0023] The first heat exchanger 2 is connected to a heat storage tank 3, a heat transfer pump P1, and a radiator 5 via piping, forming a first heat transfer circulation line HC1. A heat transfer medium is introduced into this first heat transfer circulation line HC1, and heat exchange takes place between this heat transfer medium and the aforementioned exhaust gas in the first heat exchanger 2, heating the heat transfer medium. Water or other materials can be used as the heat transfer medium, and the heat storage tank 3 stores the heat transfer medium whose temperature has risen due to heat exchange. The heat transfer medium stored in the heat storage tank 3 is sent to the radiator 5 to be cooled, and after exchanging heat with the exhaust gas again in the first heat exchanger 2, it is returned to the heat storage tank 3. As a result, the heat transfer medium with the highest temperature is stored in the heat storage tank 3 from the top, forming a temperature stratification.

[0024] The heat exchanger 5 includes a radiator 50 through which a heat transfer medium flows, and a cooling fan 51 that takes in air from outside the fuel cell device 100 and blows it to the radiator 50 as cooling air, thereby cooling the heat transfer medium through heat exchange between the heat transfer medium and the air.

[0025] Furthermore, a condensate tank 4 is connected to the first heat exchanger 2 via a condensate recovery channel 20. When the exhaust gas generated by the fuel cell module 1 is cooled by heat exchange, the water vapor contained in the exhaust gas is separated into water and gas, and the separated water is recovered into the condensate tank 4 through the condensate recovery channel 20. In the condensate tank 4, impurities are removed from the recovered water through an ion exchanger (not shown) and the like to produce pure water. The purified water is supplied to the reformer 12 by a water supply device 16 and used as reformed water. On the other hand, the gas from which the water has been removed is discharged outside the outer casing 50 after passing through the exhaust channel 21.

[0026] The fuel supply device 15, which supplies raw fuel to the reformer 12, is equipped with auxiliary equipment such as a first solenoid valve 150, a pressure sensor 151, a desulfurizer 152, a gas flow meter 153, a fuel pump 154, and a second solenoid valve 155 on the raw fuel flow path 22 connected to the fuel supply source. The reformed water supply device 16, which supplies reformed water to the reformer 12, is equipped with auxiliary equipment such as a reformed water pump 160 on the reformed water flow path 23 connected to the condensate tank 4. The air supply device 14, which supplies oxygen-containing gas to the fuel cell module 1, is equipped with auxiliary equipment such as an air filter 140, an air flow meter 141, and a blower 142 on the oxygen-containing gas flow path 24. Note that the auxiliary equipment listed here is just an example, and other configurations with other auxiliary equipment are also possible.

[0027] Furthermore, the fuel cell device 100 is equipped with a control device 7 that controls the operation of various devices, as well as a power supply adjustment unit (power conditioner) 8 that converts the DC power generated by the fuel cell module 1 into AC power and adjusts the amount of converted electricity supplied to the external load, and a ventilation fan 17 that takes in ventilation air into the outer casing 40.

[0028] The fuel cell system 100 may also include a second heat exchanger 6, a heat supply pump P2 for circulating the heat transfer medium from the heat storage tank 3, and a second heat transfer medium circulation line HC2 including piping connecting these. In the second heat transfer medium circulation line HC2, tap water supplied from the outside via a supply channel 25 is heated in the second heat exchanger 6 using a high-temperature heat transfer medium stored in the heat storage tank 3. The heated water can be supplied to an external reheating device such as a water heater via a supply channel 26. The fuel cell system 100 may also be a so-called monogeneration system that does not supply hot water to the outside.

[0029] Figure 2 is a schematic diagram of the fuel cell device according to the first embodiment, where the airflow for heat dissipation is indicated by a black arrow and the airflow for ventilation is indicated by a diagonal arrow. In the figure, only the structures related to heat dissipation and ventilation are shown, and other parts are omitted.

[0030] Inside the outer casing 40 are a ventilation fan 17, a radiator 50, and a heat dissipation fan 51. The heat sink 5 is composed of the radiator 50 and the heat dissipation fan 51. In addition, the upper part of the outer casing 40 is provided with a ventilation intake 41 for taking in ventilation air, and the lower part of the outer casing 40 is provided with a heat dissipation intake 42 for taking in air to supply to the heat sink 5, and an exhaust port 43 for discharging the air that has passed through the heat sink 5 and the ventilation air. Although an example is shown in which the ventilation intake 41 and the heat dissipation intake 42 are provided on the same side of the outer casing 40, they may be provided on different sides.

[0031] The rotation of the cooling fan 51 draws in outside air through the cooling intake 42. The air drawn in through the cooling intake 42 passes through the radiator 50 to cool the heat transfer medium and is then discharged through the exhaust port 43. Additionally, the rotation of the ventilation fan 17 draws in outside air through the ventilation intake 41. The air drawn in through the ventilation intake 41 ventilates the inside of the outer casing 40 and is then discharged through the exhaust port 43. At this time, the rotation of the cooling fan 51 creates an airflow at the bottom of the casing directed towards the exhaust port 43, and the ventilation air is drawn into the exhaust port 43 by this airflow, so the ventilation air is quickly discharged outside the outer casing 40 through the exhaust port 43.

[0032] Furthermore, a wind deflector 45 can be provided inside the outer casing 40 to direct the ventilation air in a predetermined direction. This allows for concentrated airflow to areas where the temperature tends to rise and suppresses air stagnation. Multiple wind deflectors 45 may also be provided.

[0033] Figure 3 is a schematic diagram of the fuel cell device according to the second embodiment. Inside the outer casing 40 are a ventilation fan 17, a radiator 50, a heat dissipation fan 51, and a duct 52. The heat radiator 5 is composed of the radiator 50, the heat dissipation fan 51, and the duct 52. In addition, a ventilation intake port 41 for taking in ventilation air is provided at the top of the outer casing 40, and a heat dissipation intake port 42 for taking in air to supply to the heat radiator 5 and an exhaust port 43 for discharging the air that has passed through the heat radiator 5 and the ventilation air is provided at the bottom of the outer casing 40. Although an example is shown in which the ventilation intake port 41 and the heat dissipation intake port 42 are provided on the same side of the outer casing 40, they may be provided on different sides.

[0034] The duct 52 houses the radiator 50 and the cooling fan 51, and forms an air passage between the cooling intake port 42 and the exhaust port 43. The duct 52 is also provided with an inlet 53 at a predetermined position between the radiator 50 and the cooling fan 51.

[0035] The rotation of the heat dissipation fan 51 draws in outside air through the heat dissipation intake port 42. The air drawn in through the heat dissipation intake port 42 passes through the radiator 50 to cool the heat transfer medium and is discharged through the exhaust port 43. In addition, the rotation of the ventilation fan 17 draws in outside air through the ventilation intake port 41. The air drawn in through the ventilation intake port 41 ventilates the inside of the outer casing 40 and flows into the duct 52 from the inlet port 53. At this time, the rotation of the heat dissipation fan 51 creates an airflow in the duct 52 toward the exhaust port 43, and the ventilation air is drawn into the duct 52 from the inlet port 53 as if pulled by this airflow, so the ventilation air is quickly discharged outside the outer casing 40 through the exhaust port 43.

[0036] Air passing through the radiator 50 has higher cooling efficiency when it is at a lower temperature. The ventilation air's temperature rises as it passes through the outer casing 40, but since it flows into the duct 52 downstream of the radiator 50, it does not hinder the cooling of the radiator 50. Therefore, it does not reduce the cooling efficiency.

[0037] Next, the structure of the heat sink 5 will be described. Figure 4 is a perspective view of the heat sink, and Figure 5 is an exploded view of the heat sink.

[0038] The duct 52 of the heat sink 5 has an air intake 521 at one end for taking in air and an air outlet 522 at the other end for expelling air. The air intake 521 communicates with the heat dissipation intake 42, and the air outlet 522 communicates with the exhaust port 43. The duct 52 also has a structure that allows it to be disassembled into three parts: a lower duct 523, a first upper duct 524, and a second upper duct 525. The lower duct 523 constitutes the lower half of the duct 52 and has a mounting section 523a for the radiator 50, to which the heat dissipation fan 51 is attached. The first upper duct 524 and the second upper duct 525 constitute the upper half of the duct 52. The first upper duct 524 covers the top of the radiator 50 and secures the radiator 50 by sandwiching it between the lower duct 523 and the first upper duct 524. The second upper duct 525 covers the top of the heat dissipation fan 51. In this way, by making the duct 52 detachable, the maintainability of the heat sink 5 can be improved.

[0039] The first upper duct 524 has a recess 526, which forms an inlet 53. Since the radiator 5 is located at the bottom of the outer casing 40, forming an inlet 53 above the duct 52 allows air from inside the outer casing 40 to flow efficiently into the duct 52. In this embodiment, there is only one inlet 53, but multiple inlets may be provided. Alternatively, an opening may be provided on the upper surface of the first upper duct 524 to form an inlet.

[0040] The inlet 53 can be located outside the region R connecting the outer shape of the heat dissipation fan 51 and the outer shape of the air intake 521. The dashed line in Figure 4 is the line connecting the outer shape of the heat dissipation fan 51 and the outer shape of the air intake 521, and the inlet 53 is located outside the region R enclosed by this dashed line. In region R, there is an airflow that flows from the air intake 521 toward the heat dissipation fan 51, so if ventilation air is added to this airflow, the airflow will be disturbed and pressure loss will occur. Therefore, the inlet 53 is located outside region R so as not to disturb this airflow. This allows ventilation air to be added to the duct 52 without causing pressure loss.

[0041] Furthermore, to further improve maintainability, the first upper duct 524 and the second upper duct 525 are designed to be attached to the lower duct 52 without screws. Specifically, the first upper duct 524 and the second upper duct 525 are fixed to the lower duct 523 by engaging the locking parts 524a and 525a provided on the first upper duct 524 and the second upper duct 525 with the locked part 523b provided on the lower duct 523. In addition, the second upper duct 525 and the lower duct 523 have rivet fixing parts 526 that are fixed using push rivets. This improves the ease of attachment and detachment, and also avoids the problem of screws falling out.

[0042] Figure 6 is a schematic diagram of the fuel cell device according to the third embodiment. Inside the outer casing 40 are a ventilation fan 17, a radiator 50, a heat dissipation fan 51, and a duct 52. The upper part of the outer casing 40 is provided with a ventilation intake port 41 for taking in ventilation air, and the lower part of the outer casing 40 is provided with a heat dissipation intake port 42 for taking in air to supply to the heat radiator 5, and an exhaust port 43 for discharging the air that has passed through the heat radiator 5 and the ventilation air. The ventilation intake port 41 and the exhaust port 43 are located on the same side of the outer casing 40.

[0043] The duct 52 houses the radiator 50 and the cooling fan 51, and forms an air passage between the cooling intake port 42 and the exhaust port 43. The duct 52 is also provided with an inlet 53 at a predetermined position between the radiator 50 and the cooling fan 51.

[0044] The rotation of the heat dissipation fan 51 draws in outside air through the heat dissipation intake port 42. The air drawn in through the heat dissipation intake port 42 passes through the radiator 50 to cool the heat transfer medium and is discharged through the exhaust port 43. In addition, the rotation of the ventilation fan 17 draws in outside air through the ventilation intake port 41. The air drawn in through the ventilation intake port 41 ventilates the inside of the outer casing 40 and flows into the duct through the inlet port 53. At this time, the rotation of the heat dissipation fan 51 creates an airflow in the duct 52 toward the exhaust port 43, and the ventilation air is drawn into the duct from the inlet port 53 as if pulled by this airflow, so the ventilation air is quickly discharged outside the outer casing 40 through the exhaust port 43.

[0045] Air passing through the radiator 50 has higher cooling efficiency when it is at a lower temperature. The ventilation air's temperature rises as it passes through the outer casing 40, but since it flows into the duct 52 downstream of the radiator 50, it does not hinder the cooling of the radiator 50. Therefore, it does not reduce the cooling efficiency.

[0046] Figure 7 is a schematic diagram of the fuel cell device according to the fourth embodiment. Inside the outer casing 40 are a ventilation fan 17, a radiator 50, a heat dissipation fan 51, and a duct 52. The upper part of the outer casing 40 is provided with a ventilation intake 41 for taking in ventilation air, and the lower part of the outer casing 40 is provided with a heat dissipation intake 42 for taking in air to supply to the heat radiator 5, and an exhaust port 43 for discharging the air that has passed through the heat radiator 5 and the ventilation air. An example is shown in which the ventilation intake 41 and the exhaust port 43 are provided on the same side of the outer casing 40, but they may be provided on different sides, or the ventilation intake 41 may be provided on the same side as the heat dissipation intake 42.

[0047] The duct 52 houses the radiator 50 and the cooling fan 51, and forms an air passage between the cooling intake 42 and the exhaust port 43. The duct 52 is also provided with an inlet 53 at a predetermined position between the cooling fan 51 and the exhaust port 43.

[0048] The rotation of the heat dissipation fan 51 draws in outside air through the heat dissipation intake port 42. The air drawn in through the heat dissipation intake port 42 passes through the radiator to cool the heat transfer medium and is discharged through the exhaust port 43. In addition, the rotation of the ventilation fan 17 draws in outside air through the ventilation intake port 41. The air drawn in through the ventilation intake port 41 ventilates the inside of the outer casing 40 and flows into the duct through the inlet port 53. At this time, the rotation of the heat dissipation fan 51 creates an airflow in the duct toward the exhaust port 43, and the ventilation air is drawn into the duct from the inlet port 53 as if pulled by this airflow, so the ventilation air is quickly discharged outside the outer casing 40 through the exhaust port 43.

[0049] Air passing through the radiator 50 has higher cooling efficiency when it is at a lower temperature. The ventilation air's temperature rises as it passes through the outer casing 40, but since it flows into the duct downstream of the radiator 50, it does not hinder the cooling of the radiator 50. Therefore, it does not reduce the cooling efficiency.

[0050] Figure 8 is a schematic diagram of the fuel cell device according to the fifth embodiment. Inside the outer casing 40 are a ventilation fan 17, a radiator 50, a heat dissipation fan 51, and a duct 52. The upper part of the outer casing 40 is provided with a ventilation intake port 41 for taking in ventilation air, and an exhaust port 43 for discharging the air that has passed through the heat radiator 5 and the ventilation air. The lower part of the outer casing 40 is provided with a heat dissipation intake port 42 for taking in air to supply to the heat radiator 5.

[0051] The duct 52 houses the radiator 50 and the cooling fan 51, and forms an air passage between the cooling intake 42 and the exhaust port 43. The duct 52 is also provided with an outlet 54 at a predetermined position downstream of the cooling fan 51.

[0052] The rotation of the ventilation fan 17 draws in outside air through the ventilation intake 41. The air drawn in through the ventilation intake 41 ventilates the inside of the outer casing 40 and is discharged through the exhaust port 43. In addition, the rotation of the heat dissipation fan 51 draws in outside air through the heat dissipation intake 42. The air drawn in through the heat dissipation intake 42 passes through the radiator 50 to cool the heat transfer medium and is discharged into the outer casing 40 through the outlet 54 provided in the duct 52. The rotation of the ventilation fan 17 creates an airflow inside the outer casing 40 toward the exhaust port 43, and the heat dissipation air discharged into the outer casing 40 from the outlet 54 is pulled by this airflow and discharged outside the outer casing through the exhaust port 43.

[0053] As described above, the fuel cell device 100 of this embodiment is equipped with a ventilation intake port 41 for taking in ventilation air, a heat dissipation intake port 42 for taking in air to be supplied to the radiator 5, and an exhaust port 43 for discharging the air that has passed through the radiator 5 and the ventilation air. By ensuring reliable heat dissipation and ventilation, and discharging the air that has passed through the radiator 5 and the ventilation air from a common exhaust port 43, the number of exhaust ports 43 can be reduced, thereby suppressing the intrusion of rainwater, debris, etc., and thus reducing malfunctions related to heat dissipation and ventilation, and improving the reliability of the device. [Explanation of symbols]

[0054] 1 Fuel cell module 2 1st heat exchanger (heat exchanger) 3. Heat storage tank 5 Heat sink 17 Ventilation fan 40 outer cases 41 Ventilation intake 42 Heat dissipation intake ports 43 Exhaust vent 50 radiator 51 Cooling fan 52 ducts 53 Inlet HC1 First circulation line (circulation line)

Claims

1. Fuel cell module and A heat exchanger that exchanges heat between the waste heat of the fuel cell module and the medium, A heat storage tank for storing the medium heated by heat exchange in the heat exchanger, A radiator that performs heat exchange between the medium and air, and a heat sink equipped with a heat dissipation fan that generates airflow and cools the medium flowing through the heat exchanger, The aforementioned medium circulates through the heat exchanger, the heat storage tank, and the heat radiator in a circulation line, An outer casing that houses at least the fuel cell module, the heat exchanger, the heat radiator, and a portion of the circulation line, The enclosure includes a ventilation fan for ventilating the inside of the outer casing, The outer casing comprises a ventilation intake port for taking in ventilation air, a heat dissipation intake port for taking in air to be supplied to the heat radiator, and an exhaust port for discharging the air that has passed through the heat radiator and the ventilation air, The heat sink houses the radiator and the heat dissipation fan, and includes a duct that forms an air passage between the heat dissipation intake port and the exhaust port. The duct has an inlet through which ventilation air flows in. The cooling fan is provided downstream of the radiator. The fuel cell device wherein the inlet is located downstream of the radiator and outside the region connecting the outer shape of the heat dissipation fan and the outer shape of the intake opening of the duct.

2. The ventilation intake port is provided on the upper part of the outer casing. The fuel cell device according to claim 1, wherein the heat dissipation intake port and exhaust port are provided at the lower part of the outer casing.

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