JP2024037420A - Stationary type fuel cell unit - Google Patents

Abstract

To provide a stationary type fuel cell unit which can stabilize power generation of a fuel cell stack.SOLUTION: A stationary type fuel cell unit 10 comprises: a power generation device 11; a turntable 12 on which the power generation device 11 is placed and which integrally rotates with the power generation device 11; wind direction detection means which detects the wind direction; and a drive device which rotates the turntable 12 according to the wind direction detected by the wind direction detection means. The power generation device 11 comprises: a fuel cell stack 31; and a housing 20 which stores the fuel cell stack 31. The housing 20 includes an introduction port 24 for introducing the air into the housing 20 from the outside of the housing 20. The drive device rotates the turntable 12 such that the introduction port 24 is located on the windward side.SELECTED DRAWING: Figure 6

Description

The present invention relates to a stationary fuel cell unit.

The stationary fuel cell unit disclosed in Patent Document 1 includes a fuel cell stack and a casing that houses the fuel cell stack. A fuel cell stack generates electricity through a chemical reaction between hydrogen and oxygen. The housing has an inlet for introducing air into the housing from outside the housing. The fuel cell stack generates electricity using oxygen contained in the air introduced into the housing from the inlet.

Japanese Patent Application Publication No. 2007-193963

In stationary fuel cell units, it is difficult to introduce fresh air, that is, air containing sufficient oxygen, into the housing. Therefore, the voltage of the fuel cell stack may decrease due to a decrease in the oxygen concentration of the air supplied to the fuel cell stack.

A stationary fuel cell unit for solving the above problems includes a power generation device, a turntable on which the power generation device is mounted and rotates integrally with the power generation device, a wind direction detection means for detecting the wind direction, a rotation means for rotating the turntable according to the wind direction detected by the wind direction detection means, the power generation device having a fuel cell stack and a casing housing the fuel cell stack, the casing has an inlet for introducing air into the casing from outside the casing, and the rotating means rotates the turntable so that the inlet is located upwind.

According to the above configuration, the power generation device is rotated so that the inlet is located upwind. Therefore, new air is easily introduced into the housing due to the wind flow. Therefore, power generation of the fuel cell stack can be stabilized.

In the above stationary fuel cell unit, the casing has an exhaust port for discharging gas discharged into the casing by the fuel cell stack to the outside of the casing, and the exhaust port is configured to discharge gas discharged into the casing from the fuel cell stack. It may be located on the opposite side of the introduction port.

According to the above configuration, the outlet is located on the opposite side of the inlet. Therefore, the gas discharged into the housing by the fuel cell stack is likely to be discharged outside the housing from the exhaust port due to the flow of wind. In other words, ventilation within the housing is facilitated. Therefore, the power generation of the fuel cell stack can be made more stable.

In the stationary fuel cell unit, the five power generating devices are mounted on the turntable in a checkered pattern, and one of the five power generating devices is activated by rotation of the turntable. The power generation device may be arranged at the center and the direction from the inlet to the outlet may be the same for the five power generation devices.

According to the above configuration, each power generation device becomes difficult to introduce gas discharged from other power generation devices into the housing. Therefore, the power generation of the fuel cell stack can be made more stable. Furthermore, the rotation radius of the stationary fuel cell unit is smaller than in the case where five power generators are arranged in a row on a turntable. Therefore, the installation space for the stationary fuel cell unit can be reduced.

The stationary fuel cell unit includes a hydrogen supply pipe for supplying hydrogen to the fuel cell stack, and an electricity extraction means for taking out electricity generated by the fuel cell stack, and the hydrogen supply pipe and the One of the electricity extraction means is arranged above the fuel cell stack in the vertical direction, and the other of the hydrogen supply pipe and the electricity extraction means is arranged below the fuel cell stack in the vertical direction. It may be placed in

According to the above configuration, the hydrogen supply pipe and the electricity extraction means are less likely to interfere with each other. Therefore, it becomes easy to arrange the hydrogen supply piping and the electricity extraction means. Further, the hydrogen supply piping and the electricity extraction means can be made to have a robust structure.

According to the present invention, power generation of the fuel cell stack can be stabilized.

It is a perspective view showing a stationary fuel cell unit in an embodiment. It is a side view showing a stationary fuel cell unit in an embodiment. It is a sectional view showing a power generation device in an embodiment. It is a top view showing a stationary fuel cell unit in an embodiment. It is a bottom view showing a stationary fuel cell unit in an embodiment. It is a top view for explaining an effect|action. It is a top view which shows the stationary fuel cell unit in a modification. It is a top view which shows the stationary fuel cell unit in a modification.

An embodiment of a stationary fuel cell unit will be described below with reference to FIGS. 1 to 6.
As shown in FIGS. 1 and 2, the stationary fuel cell unit 10 includes a power generation device 11, a turntable 12, a wind direction detection means 13, a drive device 14 as a rotation means, a hydrogen supply pipe 15, and an electric power generation device 11. and a take-out means 16. The stationary fuel cell unit 10 of this embodiment includes five power generation devices 11.

<Power generation device>
As shown in FIG. 3, the power generation device 11 includes a housing 20, a fuel cell stack 31, a dust filter 32, a radiator 33, a circulation flow path 34, and a radiator fan 35. Further, although not shown, the power generation device 11 includes a compressor. The housing 20 houses a fuel cell stack 31, a radiator 33, a circulation flow path 34, and a compressor.

As shown in FIG. 1, the housing 20 is a rectangular parallelepiped box. The housing 20 includes a rectangular upper wall 21, a rectangular lower wall 22, a first side wall 23a, a second side wall 23b, a third side wall 23c, and a fourth side wall 23a connecting the upper wall 21 and the lower wall 22. It has a side wall 23d. The first side wall 23a and the second side wall 23b are opposed to each other. The third side wall 23c and the fourth side wall 23d are opposed to each other.

As shown in FIG. 3, the housing 20 has an inlet 24 and an outlet 25. The introduction port 24 is provided in the first side wall 23a. The introduction port 24 is a portion for introducing air into the housing 20 from outside the housing 20. In this embodiment, a dust filter 32 is fitted into the inlet 24 . The dust filter 32 is a filter that prevents dust from entering the housing 20 together with the air. The discharge port 25 is provided in the second side wall 23b. The outlet 25 is located on the opposite side of the inlet 24 with the fuel cell stack 31 in between. The discharge port 25 is a part for discharging the fluid inside the housing 20 to the outside of the housing 20. In this embodiment, a radiator fan 35 is fitted into the exhaust port 25 .

The housing 20 has a pipe insertion hole 26 and a first wiring insertion hole 27. The pipe insertion hole 26 penetrates the upper wall 21. The pipe insertion hole 26 communicates the inside and outside of the housing 20. The first wiring insertion hole 27 penetrates the lower wall 22. The first wiring insertion hole 27 communicates the inside and outside of the housing 20.

The fuel cell stack 31 generates electricity through a chemical reaction between hydrogen and oxygen.
As shown in FIGS. 1 and 3, the fuel cell stack 31 and the hydrogen tank 17 are connected by a hydrogen supply pipe 15. Hydrogen is supplied from the hydrogen tank 17 to the fuel cell stack 31 through the hydrogen supply pipe 15. Therefore, the hydrogen supply pipe 15 is a pipe for supplying hydrogen to the fuel cell stack 31. The compressor supplies air introduced into the housing 20 from the inlet 24 to the fuel cell stack 31 . The fuel cell stack 31 generates electricity using oxygen contained in the air supplied from the compressor.

As shown in FIGS. 2 and 3, the fuel cell stack 31 and the power supply equipment 18 are connected by an electricity extraction means 16. The electricity generated by the fuel cell stack 31 is sent to the power supply equipment 18 via the electricity extraction means 16. That is, the electricity extraction means 16 extracts electricity generated by the fuel cell stack 31.

The fuel cell stack 31 discharges gas into the housing 20 during power generation. This exhaust gas mainly contains air containing oxygen that has not reacted in the fuel cell stack 31, hydrogen that has not reacted in the fuel cell stack 31, and water produced by a chemical reaction between oxygen and hydrogen. . Therefore, the oxygen concentration of the exhaust gas is lower than the oxygen concentration of the air outside the housing 20. Fluid inside the housing 20 including exhaust gas is discharged to the outside of the housing 20 from the exhaust port 25 .

The radiator 33 performs heat exchange between the fluid in the housing 20 and a heat exchange medium. The heat exchange medium is, for example, cooling water. The radiator 33 of this embodiment is disposed within the housing 20 between the fuel cell stack 31 and the radiator fan 35.

The circulation flow path 34 circulates the heat exchange medium between the fuel cell stack 31 and the radiator 33. The circulation flow path 34 has an outgoing path 34a, a return path 34b, a first heat exchange path 34c, and a second heat exchange path 34d. The outgoing path 34 a is a flow path through which cooling water flows from the radiator 33 toward the fuel cell stack 31 . The return path 34b is a flow path through which cooling water flows from the fuel cell stack 31 toward the radiator 33. The first heat exchange flow path 34c is provided within the fuel cell stack 31. The second heat exchange flow path 34d is provided within the radiator 33. Cooling water is circulated within the circulation channel 34 by a pump (not shown).

The cooling water that has flowed into the first heat exchange channel 34c through the outgoing path 34a cools the fuel cell stack 31 by absorbing the heat generated in the fuel cell stack 31. The cooling water whose temperature has increased by absorbing the heat of the fuel cell stack 31 flows into the second heat exchange flow path 34d through the return path 34b. The cooling water that has flowed into the second heat exchange channel 34d is cooled by exchanging heat with the fluid within the casing 20.

The radiator fan 35 is configured to suck fluid inside the housing 20 and discharge it outside the housing 20. Therefore, when the radiator fan 35 operates, air is sucked into the casing 20 from the inlet 24 and fluid inside the casing 20 is discharged from the outlet 25 to the outside of the casing 20, so that the inside of the casing 20 is Ventilated. At this time, the fluid in the housing 20 passes through the radiator 33, thereby increasing the cooling efficiency of the cooling water flowing through the second heat exchange flow path 34d.

<Turntable>
The turntable 12 is rotatably provided with respect to the installation surface of the stationary fuel cell unit 10. A power generation device 11 is placed on the turntable 12 . The turntable 12 constantly rotates with the power generation device 11.

As shown in FIG. 4, the turntable 12 of this embodiment has a rectangular shape. Five power generators 11 are placed on the turntable 12 of this embodiment. In the following description, in order to distinguish the five power generating devices 11, they are referred to as a first power generating device 11a, a second power generating device 11b, a third power generating device 11c, a fourth power generating device 11d, and a fifth power generating device 11e.

In this embodiment, the first to fifth power generation devices 11a to 11e are arranged in a checkered pattern. The first power generator 11a is arranged at the rotation center C of the turntable 12. The second to fifth power generation devices 11b to 11e are arranged at the four corners of the turntable 12.

The direction in which the first side wall 23a and the second side wall 23b face each other in the power generation device 11 is defined as a first direction X. In the power generation device 11, the direction in which the third side wall 23c and the fourth side wall 23d face each other is defined as a second direction Y. The first direction X and the second direction Y are the same for the first to fifth power generation devices 11a to 11e. Further, the direction from the first side wall 23a to the second side wall 23b in the first direction X, that is, the direction from the inlet 24 to the outlet 25 is the same for the first to fifth power generation devices 11a to 11e.

The second power generation device 11b and the third power generation device 11c are located closer to one end than the first power generation device 11a in the first direction X, and the fourth power generation device 11d and the fifth power generation device 11e are located in the first direction X. It is located on the other end side than the first power generation device 11a in X. The second power generation device 11b and the fourth power generation device 11d are located closer to one end than the first power generation device 11a in the second direction Y, and the third power generation device 11c and the fifth power generation device 11e are located in the second direction Y. It is located on the other end side than the first power generation device 11a in Y.

The second side wall 23b of the second power generator 11b and the first side wall 23a of the fourth power generator 11d face each other in the first direction X. Therefore, the discharge port 25 of the second power generating device 11b and the inlet port 24 of the fourth power generating device 11d face each other in the first direction X. The second side wall 23b of the third power generator 11c and the first side wall 23a of the fifth power generator 11e face each other in the first direction X. Therefore, the discharge port 25 of the third power generating device 11c and the inlet port 24 of the fifth power generating device 11e face each other in the first direction X. The fourth side wall 23d of the second power generator 11b and the third side wall 23c of the third power generator 11c face each other in the second direction Y. The fourth side wall 23d of the fourth power generator 11d and the third side wall 23c of the fifth power generator 11e face each other in the second direction Y.

As shown in FIG. 5, the turntable 12 of this embodiment has five second wiring insertion holes 12a. Each second wiring insertion hole 12a passes through the turntable 12 in the thickness direction.

As shown in FIG. 3, when the power generation device 11 is placed on the turntable 12, the first wire insertion hole 27 of the housing 20 of the power generation device 11 communicates with the second wire insertion hole 12a of the turntable 12. are doing.

<Wind direction detection means>
As shown in FIG. 1, the wind direction detection means 13 has a fuselage 13a and a vertical tail 13b. The wind direction detection means 13 rotates so that the vertical tail fin 13b is located on the leeward side. The wind direction detection means 13 detects the wind direction based on the direction in which the vertical tail fin 13b faces. The wind direction detection means 13 of this embodiment is arranged near the power generation device 11 and the turntable 12. The wind direction detection means 13 detects the wind direction of the environment in which the stationary fuel cell unit 10 is installed.

<Drive device>
As shown in FIG. 2, the drive device 14 includes a rotating shaft 14a, a motor 14b, and a control section 14c. The rotating shaft 14a is fixed to the lower surface of the turntable 12. The turntable 12 rotates integrally with the rotating shaft 14a. The rotation center C of the turntable 12 is located on the axis of the rotation shaft 14a. The motor 14b rotates the rotating shaft 14a. The control unit 14c controls the motor 14b. The control section 14c is connected to the wind direction detection means 13. The control unit 14c acquires the detection result of the wind direction detection means 13. The drive device 14 is a rotation means that rotates the turntable 12 according to the wind direction detected by the wind direction detection means 13. The drive device 14 rotates the turntable 12 so that the inlet 24 of the power generation device 11 is located upwind.

<Hydrogen supply piping>
As shown in FIG. 1, the hydrogen supply pipe 15 includes a main pipe 51, a branch pipe 52, and a rotary joint 53. A first end of the main pipe 51 is connected to the hydrogen tank 17. The branch pipe 52 has one inlet portion 52a and five outlet portions 52b. A second end of the main pipe 51 opposite to the first end is connected to an inlet 52a of the branch pipe 52 via a rotary joint 53. The branch pipe 52 is rotatably connected to the main pipe 51 by a rotary joint 53.

In this embodiment, the hydrogen supply pipe 15 is arranged above the fuel cell stack 31 in the vertical direction. The rotary joint 53 is located on the axis of the rotating shaft 14a. The five outlet portions 52b of the branch pipes 52 are inserted into the pipe insertion holes 26 of the five casings 20. The five outlet portions 52b of the branch pipe 52 are connected to the five fuel cell stacks 31.

<Electricity extraction means>
As shown in FIGS. 2 and 5, the electricity extraction means 16 includes a slip ring 60, a first wiring 61, and a second wiring 62. Note that in FIG. 2, illustration of the first wiring 61 is omitted, and the second wiring 62 is illustrated as a single line. In FIG. 5, illustration of the drive device 14 is omitted. The electricity extraction means 16 of this embodiment is arranged below the fuel cell stack 31 in the vertical direction. Electrical extraction means 16 is arranged below turntable 12.

The slip ring 60 has a cylindrical ring member 60a and a brush 60b. The rotating shaft 14a of the drive device 14 is inserted inside the ring member 60a. The axis of the ring member 60a coincides with the axis of the rotating shaft 14a. The ring member 60a is fixed to the rotating shaft 14a. The ring member 60a rotates integrally with the rotating shaft 14a. The brush 60b is provided on the outer periphery of the ring member 60a so as to be slidable on the outer circumferential surface of the ring member 60a. When the brush 60b contacts the ring member 60a, the ring member 60a and the brush 60b are electrically connected.

The first wiring 61 electrically connects the fuel cell stack 31 and the ring member 60a.
As shown in FIG. 3, the first wiring 61 connected to the fuel cell stack 31 passes through the first wiring insertion hole 27 of the casing 20 and the second wiring insertion hole 12a of the turntable 12, and extends below the turntable 12. is being drawn out. The first wiring 61 is connected to the ring member 60a below the turntable 12.

As shown in FIGS. 2 and 5, the second wiring 62 electrically connects the brush 60b and the power supply equipment 18. Thereby, the fuel cell stack 31 and the power supply equipment 18 are electrically connected via the electricity extraction means 16.

[Operation of this embodiment]
The operation of this embodiment will be explained.
As shown in FIG. 6, it is assumed that the wind direction of the environment in which the stationary fuel cell unit 10 is installed is the wind direction indicated by an arrow W. The wind direction detection means 13 detects the wind direction. The drive device 14 rotates the turntable 12 according to the wind direction detected by the wind direction detection means 13. The drive device 14 rotates the turntable 12 so that the inlet 24 of each power generation device 11 is located upwind.

At this time, in the hydrogen supply pipe 15, the branch pipe 52 rotates together with the power generation device 11 and the turntable 12, but the main pipe 51 does not rotate. Further, in the slip ring 60, the ring member 60a rotates together with the power generator 11 and the turntable 12, but the brush 60b does not rotate.

Each power generation device 11 is rotated so that the introduction port 24 is located upwind. Therefore, new air is easily introduced into the housing 20 due to the wind flow. The oxygen concentration of the new air introduced into the casing 20 is higher than the oxygen concentration of the air after the fuel cell stack 31 has been used for power generation. Therefore, air with high oxygen concentration is supplied to the fuel cell stack 31. Furthermore, when the inlet 24 is located on the windward side, the outlet 25 provided on the opposite side to the inlet 24 is located on the leeward side. Therefore, the exhaust gas inside the housing 20 is easily discharged to the outside of the housing 20 from the exhaust port 25 due to the flow of wind. Therefore, exhaust gas containing air with a low oxygen concentration is less likely to be supplied to the fuel cell stack 31. In this manner, the inside of the housing 20 is ventilated by the flow of air, thereby suppressing a drop in the voltage of the fuel cell stack 31.

[Effects of this embodiment]
The effects of this embodiment will be explained.
(1) The stationary fuel cell unit 10 includes a power generation device 11, a turntable 12 on which the power generation device 11 is placed, a wind direction detection means 13 that detects the wind direction, and a drive that rotates the turntable 12 according to the wind direction. A device 14 is provided. The power generation device 11 includes a fuel cell stack 31 and a casing 20 that accommodates the fuel cell stack 31. The housing 20 has an inlet 24 for sucking air into the housing 20 from outside the housing 20. The drive device 14 rotates the turntable 12 so that the introduction port 24 is located upwind. By locating the inlet 24 on the windward side, new air is easily introduced into the housing 20 due to the flow of wind. Therefore, since the voltage of the fuel cell stack 31 is suppressed from decreasing, the power generation of the fuel cell stack 31 can be stabilized. Furthermore, the power generation efficiency of the fuel cell stack 31 can be increased.

(2) The casing 20 has an exhaust port 25 for discharging the gas discharged into the casing 20 by the fuel cell stack 31 to the outside of the casing 20. The outlet 25 is located on the opposite side of the inlet 24 with the fuel cell stack 31 in between. Therefore, the exhaust gas inside the housing 20 is easily discharged to the outside of the housing 20 from the exhaust port 25 due to the flow of wind. In other words, ventilation within the housing 20 is facilitated. Therefore, power generation by the fuel cell stack 31 can be made more stable. Moreover, the power generation efficiency of the fuel cell stack 31 can be further improved. Further, by ventilating the inside of the housing 20, the fuel cell stack 31 can be cooled, and the cooling efficiency of the cooling water flowing through the second heat exchange flow path 34d can be increased.

(3) The first to fifth power generation devices 11a to 11e are placed on the turntable 12 in a checkered pattern. The first power generator 11a is arranged at the rotation center C of the turntable 12. The direction from the inlet 24 to the outlet 25 is the same for the first to fifth power generators 11a to 11e. This arrangement makes it difficult for each power generation device 11 to introduce gas discharged from other power generation devices 11 into the housing 20 .

Specifically, the inlets 24 of the first power generator 11a, the second power generator 11b, and the third power generator 11c do not face the outlet 25 of the other power generators 11. Therefore, the first power generation device 11a, the second power generation device 11b, and the third power generation device 11c are unlikely to introduce gas discharged from other power generation devices 11 into the housing 20. Although the inlet 24 of the fourth power generator 11d faces the outlet 25 of the second power generator 11b, the inlet 24 of the fourth power generator 11d and the outlet 25 of the second power generator 11b are connected to each other. The interval is separated by the first power generation device 11a. Therefore, the fourth power generation device 11d is difficult to introduce the gas discharged from the second power generation device 11b into the housing 20. Similarly, although the inlet 24 of the fifth power generator 11e faces the outlet 25 of the third power generator 11c, the inlet 24 of the fifth power generator 11e and the outlet 25 of the third power generator 11c are spaced apart by the first power generation device 11a. Therefore, the fifth power generation device 11e is difficult to introduce the gas discharged from the third power generation device 11c into the housing 20.

Since each power generation device 11 is less likely to introduce gas discharged from other power generation devices 11 into the housing 20, the power generation of the fuel cell stack 31 can be made more stable. Moreover, the power generation efficiency of the fuel cell stack 31 can be further improved.

Furthermore, the rotation radius of the stationary fuel cell unit 10 is smaller than when the five power generating devices 11 are arranged on the turntable 12 in a line. Therefore, the installation space for the stationary fuel cell unit 10 can be reduced.

(4) The stationary fuel cell unit 10 includes a hydrogen supply pipe 15 for supplying hydrogen to the fuel cell stack 31 and an electricity extraction means 16 for extracting electricity generated by the fuel cell stack 31. The hydrogen supply pipe 15 is arranged above the fuel cell stack 31 in the vertical direction. The electricity extraction means 16 is arranged below the fuel cell stack 31 in the vertical direction. Therefore, the hydrogen supply pipe 15 and the electricity extraction means 16 are less likely to interfere with each other. Therefore, the hydrogen supply piping 15 and the electricity extraction means 16 can be easily handled. Further, the hydrogen supply pipe 15 and the electricity extraction means 16 can be made to have a robust structure.

(5) The housing 20 has both an inlet 24 and an outlet 25. Therefore, inside the casing 20, air supplied from outside the casing 20 and gas discharged from the fuel cell stack 31 coexist. With this configuration, air with a low oxygen concentration after being used for power generation by the fuel cell stack 31 is easily supplied to the fuel cell stack 31 . Therefore, by employing the configuration of this embodiment, it is particularly effective to ventilate the inside of the housing 20.

(6) The hydrogen supply pipe 15 has a rotary joint 53. Therefore, it is possible to avoid twisting of the hydrogen supply pipe 15 when the power generation device 11 and the turntable 12 rotate.
(7) The electricity extraction means 16 has a slip ring 60. Therefore, it is possible to avoid twisting of the electricity extraction means 16 when the power generation device 11 and the turntable 12 rotate.

(8) Five power generators 11 are placed on one turntable 12. Therefore, compared to the case where one power generation device 11 is mounted on one turntable 12, the number of drive devices 14, rotary joints 53, and slip rings 60 can be reduced.

(9) By rotating the power generation device 11 so that the inlet 24 is located upwind, the inside of the housing 20 is ventilated by the flow of wind. Therefore, even when the radiator fan 35 is not operating, the inside of the housing 20 can be ventilated. Furthermore, when the radiator fan 35 is operating, ventilation within the housing 20 can be promoted.

[Example of change]
Note that the above embodiment can be modified and implemented as follows. The above embodiment and the following modifications can be implemented in combination with each other within a technically consistent range.

○ The number of power generation devices 11 included in the stationary fuel cell unit 10 is not limited to five. The number of power generators 11 is set according to the amount of power generated by the power generators 11 and the required power. Further, the arrangement of the power generation device 11 on the turntable 12 is not limited to the checkered pattern, and may be changed as appropriate.

For example, as shown in FIG. 7, the stationary fuel cell unit 10 may include three power generators 11. The three power generation devices 11 are arranged in a line. The third side wall 23c of the power generation device 11 located at the center faces the fourth side wall 23d of the power generation device 11 located at one end, and the fourth side wall 23d of the power generation device 11 located at the center faces the other end. It faces the third side wall 23c of the power generating device 11 located therein. The direction from the inlet 24 to the outlet 25 is the same for the three power generators 11.

For example, as shown in FIG. 8, the stationary fuel cell unit 10 may include four power generators 11. The four power generators 11 are arranged at the four corners of the turntable 12, like the second to fifth power generators 11b to 11e in the above embodiment. In this case, the rotation radius of the stationary fuel cell unit 10 becomes smaller compared to the case where the four power generators 11 are arranged in a line. Therefore, the installation space for the stationary fuel cell unit 10 can be reduced.

The power generation device 11 may have a pipe for discharging the gas discharged by the fuel cell stack 31 to the outside of the housing 20 instead of the exhaust port 25 provided in the housing 20. In this case, the gas discharged by the fuel cell stack 31 is not discharged into the housing 20.

The discharge port 25 may be formed in a wall other than the second side wall 23b of the housing 20.
○ The dust filter 32 may be omitted.
○ The radiator fan 35 does not need to be fitted into the exhaust port 25. The radiator fan 35 may be arranged between the fuel cell stack 31 and the radiator 33, for example. In this case, the radiator fan 35 blows air toward the radiator 33.

○ The turntable 12 does not have to be rectangular. The turntable 12 may have a disc shape, for example.
○ The wind direction detection means 13 may be attached to the power generation device 11. The wind direction detection means 13 is attached to the housing 20, for example, so that the vertical stabilizer 13b is located on the opposite side to the inlet 24, that is, on the outlet 25 side. The power generation device 11 rotates integrally with the wind direction detection means 13.

In this case, by rotating the wind direction detecting means 13 so that the vertical tail 13b is located on the leeward side, the power generation device 11 to which the wind direction detecting means 13 is attached has the inlet port 24 located on the windward side and the outlet port 25 rotate so that it is located downwind. When the power generation device 11 rotates, the turntable 12 on which the power generation device 11 is placed also rotates.

Note that the wind direction detection means 13 may be attached to the turntable 12. Specifically, the wind direction detection means 13 is attached to the turntable 12 so that the vertical tail fin 13b is located on the opposite side from the inlet 24, that is, on the outlet 25 side. The turntable 12 rotates integrally with the wind direction detection means 13.

In this case as well, by rotating the wind direction detecting means 13 so that the vertical stabilizer 13b is located on the leeward side, the turntable 12 to which the wind direction detecting means 13 is attached has the inlet port 24 located on the windward side and the outlet port 25 rotates together with the power generation device 11 so that it is located on the leeward side.

When the wind direction detection means 13 is attached to the power generation device 11 or the turntable 12 in this way, the wind direction detection means 13 also serves as a rotation means for rotating the turntable 12 according to the wind direction. In this case, the drive device 14 of the above embodiment is unnecessary.

The hydrogen supply pipe 15 may be located below the power generation device 11 in the vertical direction, and the electricity extraction means 16 may be located above the power generation device 11 in the vertical direction.
The hydrogen supply pipe 15 and the electricity extraction means 16 may be provided together above or below the power generation device 11 in the vertical direction.

○ The hydrogen tank 17 may be placed on the turntable 12 together with the power generation device 11. In this case, the hydrogen supply pipe 15 does not need to have the rotary joint 53.

DESCRIPTION OF SYMBOLS 10... Stationary fuel cell unit, 11... Power generation device, 12... Turntable, 13... Wind direction detection means, 14... Drive device as rotation means, 15... Hydrogen supply piping, 16... Electricity extraction means, 20... Housing, 24...Inlet, 25...Outlet, 31...Fuel cell stack, C...Rotation center.

Claims (4)

a power generation device;
a turntable on which the power generation device is placed and rotates integrally with the power generation device;
Wind direction detection means for detecting wind direction;
Rotation means for rotating the turntable according to the wind direction detected by the wind direction detection means;
Equipped with
The power generation device includes a fuel cell stack and a casing that houses the fuel cell stack,
The casing has an inlet for introducing air into the casing from outside the casing,
The stationary fuel cell unit is characterized in that the rotating means rotates the turntable so that the inlet is located upwind. The casing has an exhaust port for discharging gas discharged into the casing by the fuel cell stack to the outside of the casing,
The stationary fuel cell unit according to claim 1, wherein the discharge port is located on the opposite side of the inlet with the fuel cell stack interposed therebetween. The five power generation devices are placed on the turntable in a checkered pattern,
One of the five power generating devices is arranged at the rotation center of the turntable,
3. The stationary fuel cell unit according to claim 2, wherein the direction from the inlet to the outlet is the same for the five power generators. hydrogen supply piping for supplying hydrogen to the fuel cell stack;
electricity extraction means for extracting electricity generated by the fuel cell stack;
Equipped with
One of the hydrogen supply pipe and the electricity extraction means is arranged above the fuel cell stack in the vertical direction, and the other of the hydrogen supply pipe and the electricity extraction means is disposed above the fuel cell stack in the vertical direction. The stationary fuel cell unit according to claim 1, wherein the stationary fuel cell unit is located below the battery stack.

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