Cooling system and fuel cell system

Abstract

To provide a cooling device that can be miniaturized. [Solution] The cooling device 16 installed in the fuel cell system discharges exhaust air from multiple radiators 30 through a first central exhaust duct 26 and a second central exhaust duct 28. The exhaust air from some of the radiators 30 is introduced into the first central exhaust duct 26 so as to rotate in a first rotational direction, and the exhaust air from other parts of the radiators 30 is introduced into the second central exhaust duct 28 so as to rotate in a second rotational direction opposite to the first rotational direction.

Description

Technical Field

[0001] The present disclosure relates to a cooling device and a fuel cell system.

Background Art

[0002] Various systems have been proposed that are configured to mount equipment such as storage batteries, power generation devices, or electronic computers in containers or the like and transport and arrange them at required locations. Since such a system mounts a large number of heat-generating devices in a sealed space such as a container, appropriate cooling is required.

[0003] For example, U.S. Patent No. 11,862,831 describes a cooling device in a container equipped with a plurality of fuel cells.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] As an example of a cooling device, a liquid-cooled cooling device is known that circulates a coolant such as water between a heat-generating device and a radiator to cool the heat-generating device. In order to cool a plurality of radiators, this cooling device takes in outside air using a blower fan. The taken-in outside air becomes warm exhaust air by exchanging heat with the radiator and is discharged to the outside of the container through an exhaust duct provided in the cooling device.

[0006] When arranging a plurality of containers, if warm exhaust air is blown onto adjacent containers, it will interfere with the cooling of other containers. Therefore, it is preferable that the exhaust duct collects the exhaust from a plurality of radiators and ejects it upward with force.

[0007] However, depending on the layout of the multiple connecting ducts that connect the radiator and the exhaust duct, the exhaust air may flow in a rotational direction within the exhaust duct. When such a rotational flow occurs, the exhaust duct receives a reaction force from the exhaust air and experiences a rotational moment in the opposite direction to the rotation of the exhaust air.

[0008] Therefore, the frame supporting the exhaust duct needs to have sufficient rigidity to withstand the rotational moment acting on the exhaust duct, which leads to the problem of the frame becoming larger.

[0009] This disclosure aims to solve the problems described above. [Means for solving the problem]

[0010] A first aspect of the present disclosure is a cooling device comprising: a first central exhaust duct; a second central exhaust duct arranged adjacent to and parallel to the first central exhaust duct; a plurality of first radiators arranged around the first central exhaust duct; a plurality of first connecting ducts that guide the exhaust air from the plurality of first radiators to the first central exhaust duct; a plurality of second radiators arranged around the second central exhaust duct; a plurality of second connecting ducts that guide the exhaust air from the plurality of second radiators to the second central exhaust duct; and a frame that supports the first central exhaust duct and the second central exhaust duct, wherein the plurality of first connecting ducts are connected to the first central exhaust duct in a direction that creates a flow of exhaust air in a first rotational direction inside the first central exhaust duct, and the plurality of second connecting ducts are connected to the second central exhaust duct in a direction that creates a flow of exhaust air in a second rotational direction opposite to the first rotational direction inside the second central exhaust duct.

[0011] A second aspect of the present disclosure is a fuel cell system comprising a cooling device according to the first aspect and a plurality of fuel cells, wherein the number of fuel cells is the same as the number of the first radiator and the second radiator, and the plurality of fuel cells are connected in parallel to the cooling device. [Effects of the Invention]

[0012] According to this disclosure, the rotational moment generated in the first exhaust duct and the rotational moment generated in the second exhaust duct are in opposite directions, causing their respective rotational moments to cancel each other out. As a result, the frame that holds the exhaust duct does not have to be subjected to rotational moments, making it possible to miniaturize it. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a perspective view of the fuel cell system according to the first embodiment. [Figure 2] Figure 2 is an enlarged side view of the cooling device shown in Figure 1. [Figure 3] Figure 3 is a cross-sectional view of the cooling device along the line III-III in Figure 2. [Figure 4] Figure 4 is a cross-sectional view of a cooling device according to a comparative example. [Figure 5] Figure 5 is a cross-sectional view of the cooling device according to the second embodiment. [Modes for carrying out the invention]

[0014] (First Embodiment) As shown in Figure 1, the fuel cell system 10 of this embodiment is housed in a standardized container 12 (also called a dry container or general-purpose container). After being assembled in a factory, the fuel cell system 10 is transported to a predetermined location by various means of transport such as ships, rail, and trucks. The fuel cell system 10 of this embodiment generates electricity at the location and supplies power to demand facilities. The fuel cell system 10 can be used, for example, as a backup power supply for data centers, or as a private power generation facility for factories, buildings, and public facilities.

[0015] The fuel cell system 10 comprises a fuel cell unit 14 and a cooling device 16. The fuel cell unit 14 includes a mounting rack 20 divided into multiple compartments. Each compartment of the mounting rack 20 houses a fuel cell 22. Depending on the size of the container 12 and the power demand, the fuel cell unit 14 can be equipped with a predetermined number of fuel cells 22, such as 2, 4, 8, 16, or 32. In the illustrated example, the fuel cell unit 14 is equipped with 16 fuel cells 22. Furthermore, the container 12 may include a high-voltage unit that converts the power output from the multiple fuel cells 22 into DC or AC power of a predetermined voltage and outputs it to the outside as needed.

[0016] The cooling device 16 will be described below with reference to Figures 2 and 3. The cooling device 16 comprises a first central exhaust duct 26, a second central exhaust duct 28, a plurality of radiators 30 (first radiator 30A and second radiator 30B), a first connecting duct 32 and a second connecting duct 34, and a frame 36.

[0017] In the following description, the terms width direction, longitudinal direction, and vertical direction are used to describe the relative positional relationships of the parts of the cooling device 16. The width direction is the direction in which the radiator 30 takes in outside air and discharges exhaust air. One side of the width direction is called the first direction, and the opposite side is called the second direction. The longitudinal direction is the direction in which the first concentrated exhaust duct 26 and the second concentrated exhaust duct 28 are aligned. One side of the longitudinal direction is called the third direction, and the opposite side is called the fourth direction. The vertical direction is the direction in which the central axes of the first concentrated exhaust duct 26 and the second concentrated exhaust duct 28 extend. The vertical direction is perpendicular to the width direction and the longitudinal direction. Note that the terms width direction, longitudinal direction, and vertical direction are unrelated to the shape of the container 12, and the arrangement direction of the cooling device 16 is not constrained by the shape of the container 12.

[0018] In the first stage, the central exhaust duct 26 is located near the center in the width direction. The first stage central exhaust duct 26 has a circular cross-section and extends linearly in the vertical direction. The lower end of the first stage central exhaust duct 26 is sealed, and the upper end forms the first exhaust port 26a. The first stage central exhaust duct 26 discharges the exhaust air above the container 12 through the first exhaust port 26a.

[0019] The second stage central exhaust duct 28 is arranged adjacent to the first stage central exhaust duct 26 in the fourth direction. The second stage central exhaust duct 28 is located in the fourth direction of the first stage central exhaust duct 26 and extends linearly upward in parallel with the first stage central exhaust duct 26. The second stage central exhaust duct 28 has a second exhaust port 28a at the upper part. The exhaust air of the second stage central exhaust duct 28 is discharged above the container 12 through the second exhaust port 28a.

[0020] The number of radiators 30 provided is the same as the number of fuel cells 22 mounted on the fuel cell section 14. One radiator 30 is assigned to one fuel cell 22. The fuel cell 22 and the radiator 30 are connected by a coolant pipe. The cooling water circulates between the fuel cell 22 and the radiator 30 through the coolant pipe. That is, the plurality of fuel cells 22 are connected in parallel to the plurality of radiators 30. Such a combination of the fuel cell 22 and the radiator 30 enables the use of the fuel cell 22 and the radiator 30 for mass-produced fuel cell vehicles, and enables the reduction of the unit cost.

[0021] The radiator 30 incorporates a fan unit (not shown) and takes in outside air from the side part in the short side direction of the container 12. The taken-in outside air exchanges heat with the cooling water in the radiator 30 and is discharged from the radiator 30 as high-temperature exhaust air.

[0022] In the cooling system 16, multiple radiators 30 are arranged in a row in both the first and second directions of the container 12. In the example shown in Figure 2, eight radiators 30 are arranged in the first direction. These radiators 30 are arranged in pairs (two rows) along the longitudinal direction of the container 12 and stacked in four layers vertically. Additionally, eight radiators 30 are arranged in two rows along the longitudinal direction and in four layers vertically on the side of the container 12 in the second direction.

[0023] As shown in Figure 3, focusing on one stage, some radiators 30 are connected to the first central exhaust duct 26, and other radiators 30 are connected to the second central exhaust duct 28. In the following description, the radiators 30 connected to the first central exhaust duct 26 are referred to as the first radiators 30A. The radiators 30 connected to the second central exhaust duct 28 are referred to as the second radiators 30B. The first radiators 30A are provided in pairs so as to sandwich the first central exhaust duct 26 from the width direction. The second radiators 30B are provided in pairs so as to sandwich the second central exhaust duct 28 from the width direction.

[0024] The first radiator 30A is connected to the first central exhaust duct 26 through a first connecting duct 32. The first connecting duct 32 extends in the width direction and is connected to the side of the first central exhaust duct 26. The same number of first connecting ducts 32 are provided as the number of first radiators 30A. In this embodiment, the cooling device 16 includes a pair of first connecting ducts 32. One first connecting duct 32 extends in a first direction toward the first central exhaust duct 26, and the other first connecting duct 32 extends in a second direction toward the first central exhaust duct 26. Each first connecting duct 32 is tapered so that its cross-sectional area decreases as it approaches the first central exhaust duct 26.

[0025] The first connecting duct 32 extending in a first direction from the first central exhaust duct 26 has a first downstream end 32a that extends in the width direction near the first central exhaust duct 26. The first downstream end 32a ejects exhaust air into the first central exhaust duct 26 in a second direction. The first connecting duct 32 extending in a second direction from the first central exhaust duct 26 has a second downstream end 32b that extends in the width direction near the first central exhaust duct 26. The second downstream end 32b ejects exhaust air into the first central exhaust duct 26 in a first direction.

[0026] In this embodiment, the first downstream end 32a and the second downstream end 32b are offset in the longitudinal direction perpendicular to the width direction. This prevents collision between the exhaust air ejected from the first downstream end 32a and the exhaust air ejected from the second downstream end 32b, thereby suppressing exhaust resistance and preventing a decrease in exhaust flow rate. As shown in the figure, the first downstream end 32a is offset in a third direction relative to the second downstream end 32b. Therefore, the exhaust air inside the first concentrated exhaust duct 26 generates a rotational flow in a first rotational direction, counterclockwise when viewed from above.

[0027] The second radiator 30B is connected to the second central exhaust duct 28 through a second connecting duct 34. The second connecting duct 34 extends in the width direction and is connected to the side of the second central exhaust duct 28. The cooling device 16 of this embodiment includes a pair of second connecting ducts 34. One second connecting duct 34 extends in a first direction toward the second central exhaust duct 28, and the other second connecting duct 34 extends in a second direction toward the second central exhaust duct 28. Each second connecting duct 34 is tapered so that its cross-sectional area decreases as it approaches the second central exhaust duct 28.

[0028] The second connecting duct 34, which extends in the first direction from the second central exhaust duct 28, has a third downstream end 34a that extends in the width direction near the second central exhaust duct 28. The third downstream end 34a ejects exhaust air into the second central exhaust duct 28 in the second direction. The second connecting duct 34, which extends in the first direction from the second central exhaust duct 28, also has a fourth downstream end 34b that extends parallel to the width direction near the second central exhaust duct 28. The fourth downstream end 34b ejects exhaust air into the second central exhaust duct 28 in the first direction.

[0029] In this embodiment, the third downstream end 34a and the fourth downstream end 34b are offset in the longitudinal direction. This avoids collision between the exhaust air ejected from the third downstream end 34a and the exhaust air ejected from the fourth downstream end 34b, suppressing exhaust resistance and preventing a decrease in exhaust flow rate. As shown in the figure, the third downstream end 34a is offset in the fourth direction relative to the fourth downstream end 34b. Therefore, the exhaust air inside the second concentrated exhaust duct 28 generates a rotational flow in a second rotational direction, clockwise when viewed from above.

[0030] The above description explains the shape and arrangement of the first radiator 30A, second radiator 30B, first connecting duct 32, and second connecting duct 34 belonging to one stage, but these components belonging to other stages have a similar arrangement. That is, the first radiators 30A, second radiators 30B, first connecting duct 32, and second connecting duct 34 of multiple stages overlap vertically while maintaining the arrangement shown in Figure 3.

[0031] The frame 36 includes a first frame body 38, a second frame body 40, a first connecting portion 42, a second connecting portion 44, a first duct support portion 46, and a second duct support portion 48. The first frame body 38 is located near the end of the cooling device 16 in a first direction. The first frame body 38 extends longitudinally and supports a plurality of radiators 30 located in the first direction. The second frame body 40 is located near the end of the cooling device 16 in a second direction. The second frame body 40 extends longitudinally and supports a plurality of radiators 30 located in the second direction. The first connecting portion 42 is located near the end in a third direction and extends in the width direction. The first connecting portion 42 connects the first frame body 38 and the second frame body 40 at the end in the third direction. The second connecting portion 44 is located near the end in a fourth direction and extends in the width direction. The second connecting portion 44 connects the first frame body 38 and the second frame body 40 at its end in the fourth direction.

[0032] The first duct support portion 46 extends in the longitudinal direction and abuts the first central exhaust duct 26 and the second central exhaust duct 28 from the first direction. The first duct support portion 46 is joined to the first central exhaust duct 26 at the first joint portion 49 and to the second central exhaust duct 28 at the second joint portion 50. Furthermore, the end portion of the first duct support portion 46 in the third direction is joined to the first connecting portion 42 at the third joint portion 52. The end portion of the first duct support portion 46 in the fourth direction is joined to the second connecting portion 44 at the fourth joint portion 54. The first duct support portion 46 supports the first central exhaust duct 26 and the second central exhaust duct 28 from the first direction.

[0033] The second duct support portion 48 extends longitudinally parallel to the first duct support portion 46 and abuts against the first central exhaust duct 26 and the second central exhaust duct 28 from the second direction. The second duct support portion 48 is joined to the first central exhaust duct 26 at the fifth joint portion 56 and to the second central exhaust duct 28 at the sixth joint portion 58. Furthermore, the end of the second duct support portion 48 in the third direction is joined to the first connecting portion 42 at the seventh joint portion 60, and the end of the second duct support portion 48 in the fourth direction is joined to the second connecting portion 44 at the eighth joint portion 62. The second duct support portion 48 supports the first central exhaust duct 26 and the second central exhaust duct 28 from the second direction. The first joint 49, second joint 50, third joint 52, fourth joint 54, fifth joint 56, sixth joint 58, seventh joint 60, and eighth joint 62 may be welded joints.

[0034] The first duct support section 46 and the second duct support section 48 are positioned above or below the first connecting duct 32 and the second connecting duct 34. When the first connecting duct 32 and the second connecting duct 34 are installed in multiple stages, the first duct support section 46 and the second duct support section 48 are installed in the vertical space between the first connecting duct 32 and the second connecting duct 34 in each stage. These first duct support sections 46 and the second duct support section 48 prevent displacement and vibration caused by the rotational torque of the first central exhaust duct 26 and the second central exhaust duct 28.

[0035] The cooling device 16 and fuel cell system 10 of this embodiment are configured as described above. The operation of the cooling device 16 will now be explained.

[0036] As shown in Figure 4, the cooling device 64 in the comparative example exhausts exhaust air from multiple radiators 30 through a single centralized exhaust duct 66. Multiple connecting ducts 68 connected to the centralized exhaust duct 66 are connected to create a rotational flow in a first rotational direction (counterclockwise) in order to prevent a decrease in exhaust flow rate due to collision of exhaust air.

[0037] In the cooling device 64 of this comparative example, the exhaust air inside the centralized exhaust duct 66 generates a rotational flow. The centralized exhaust duct 66 receives a reaction force from the rotational flow of the exhaust air and is subjected to a rotational moment in a second rotational direction opposite to the direction of rotation of the exhaust air. Therefore, the first duct support section 70 and the second duct support section 72 that support the centralized exhaust duct 66 are continuously subjected to a reaction force accompanied by vibration due to the rotational moment. In order to support such a reaction force, the frame 74 including the first duct support section 70 and the second duct support section 72 is required to have high rigidity, which leads to the frame 74 becoming larger.

[0038] In contrast, as shown in Figure 3, in the cooling device 16 of this embodiment, the rotation direction of the exhaust air generated in the first centralized exhaust duct 26 (first rotation direction) and the rotation direction of the exhaust air generated in the second centralized exhaust duct 28 (second rotation direction) are in opposite directions. As a result, the rotational moment generated by the first centralized exhaust duct 26 and the rotational moment generated by the second centralized exhaust duct 28 cancel each other out. Therefore, the rotational moment applied to the first duct support portion 46 and the second duct support portion 48 is smaller than in the comparative example shown in Figure 4. Consequently, the cooling device 16 of this embodiment shown in Figure 3 enables miniaturization of the frame 36 that supports the first centralized exhaust duct 26 and the second centralized exhaust duct 28.

[0039] (Second Embodiment) As shown in Figure 5, the cooling device 16A according to this embodiment includes a third central exhaust duct 26A and a fourth central exhaust duct 28A, in addition to the first central exhaust duct 26 and the second central exhaust duct 28. In the configuration of the cooling device 16A of this embodiment, components similar to those of the cooling device 16 described with reference to Figures 1 to 3 are denoted by the same reference numerals, and their detailed descriptions are omitted.

[0040] As shown in the figure, the first centralized exhaust duct 26, the second centralized exhaust duct 28, the third centralized exhaust duct 26A, and the fourth centralized exhaust duct 28A are arranged in a line along the longitudinal direction. The third centralized exhaust duct 26A and the fourth centralized exhaust duct 28A extend upward. The third centralized exhaust duct 26A and the fourth centralized exhaust duct 28A have the same shape and dimensions as the first centralized exhaust duct 26 and the second centralized exhaust duct 28.

[0041] Third radiators 30C are positioned in the first and second directions of the third centralized exhaust duct 26A, respectively. The third radiators 30C are connected to the third centralized exhaust duct 26A through a third connecting duct 32A. The third connecting duct 32A is formed to be the same shape and dimensions as the first connecting duct 32. The pair of third connecting ducts 32A are connected to the third centralized exhaust duct 26A in a position and direction that generates a rotational flow of exhaust air in the first rotational direction.

[0042] Fourth radiators 30D are positioned in the first and second directions of the fourth central exhaust duct 28A, respectively. The fourth radiators 30D are connected to the fourth central exhaust duct 28A through fourth connecting ducts 34A. The fourth connecting ducts 34A are formed to be the same shape and dimensions as the second connecting ducts 34. The pair of fourth connecting ducts 34A are connected to the fourth central exhaust duct 28A in a position and direction that generates a rotational flow of exhaust air in the second rotational direction.

[0043] The frame 36A of this embodiment has a first duct support portion 46A and a second duct support portion 48A. The first duct support portion 46A contacts and supports the first central exhaust duct 26, the second central exhaust duct 28, the third central exhaust duct 26A, and the fourth central exhaust duct 28A from a first direction. The second duct support portion 48A contacts and supports the first central exhaust duct 26, the second central exhaust duct 28, the third central exhaust duct 26A, and the fourth central exhaust duct 28A from a second direction.

[0044] The cooling device 16A of this embodiment is configured as described above. In the cooling device 16A of this embodiment, the rotation directions of the exhaust air in the adjacent first central exhaust duct 26 to the fourth central exhaust duct 28A are configured to be opposite to each other. As a result, the rotation moments of the first central exhaust duct 26 to the fourth central exhaust duct 28A cancel each other out, so that the frame 36A including the first duct support portion 46A and the second duct support portion 48A of the cooling device 16A of this embodiment can be made smaller.

[0045] With regard to the above embodiments, the following additional information is disclosed.

[0046] (Note 1) The cooling device (16) of this disclosure includes a first central exhaust duct (26), a second central exhaust duct (28) arranged parallel to and adjacent to the first central exhaust duct, a plurality of first radiators (30A) arranged around the first central exhaust duct, a plurality of first connecting ducts (32) that guide the exhaust air from the plurality of first radiators to the first central exhaust duct, a plurality of second radiators (30B) arranged around the second central exhaust duct, and a second central exhaust duct that guides the exhaust air from the plurality of second radiators to the second central exhaust duct The system includes a plurality of second connecting ducts (34) leading to an air duct, and a frame (36) supporting the first central exhaust duct and the second central exhaust duct, wherein the plurality of first connecting ducts are connected to the first central exhaust duct in a direction that creates a flow of exhaust air in a first rotational direction inside the first central exhaust duct, and the plurality of second connecting ducts are connected to the second central exhaust duct in a direction that creates a flow of exhaust air in a second rotational direction opposite to the first rotational direction inside the second central exhaust duct.

[0047] The above cooling system can reduce the load on the frame by canceling out the rotational moment generated in the first centralized exhaust duct with the rotational moment generated in the second centralized exhaust duct, thereby enabling a smaller frame.

[0048] (Note 2) The cooling system described in Appendix 1 may have one first radiator positioned in a first direction perpendicular to the central axis of the first central exhaust duct and one in a second direction opposite to the first direction, and one second radiator positioned in the first direction and one in the second direction of the second central exhaust duct. This cooling system can efficiently exhaust exhaust air from multiple radiators with a compact device configuration.

[0049] (Note 3) The cooling device described in Appendix 2 may be such that the first connecting duct extending from the first radiator in the first direction is connected to the first centralized exhaust duct at a position offset from the first connecting duct extending from the first radiator in the second direction in a third direction perpendicular to the first direction, and the second connecting duct extending from the second radiator in the first direction is connected to the second centralized exhaust duct at a position offset from the second connecting duct extending from the second radiator in the second direction in a fourth direction opposite to the third direction. This cooling device can reverse the direction of rotation of the exhaust air from the first centralized exhaust duct and the direction of rotation of the exhaust air from the second centralized exhaust duct.

[0050] (Note 4) The cooling device described in Appendix 3, wherein the second centralized exhaust duct may be arranged in the fourth direction of the first centralized exhaust duct.

[0051] (Note 5) The cooling device described in Appendix 4 may have a frame comprising a first duct support portion (46) that abuts against and supports the first central exhaust duct and the second central exhaust duct from a first direction, and a second duct support portion (48) that abuts against and supports the first central exhaust duct and the second central exhaust duct from a second direction. This cooling device allows for miniaturization of the frame including the first duct support portion and the second duct support portion.

[0052] (Note 6) In the cooling device described in Appendix 2, the first radiator, the first connecting duct, the second radiator, and the second connecting duct may be arranged in multiple stages in the direction of the central axis. This cooling device can efficiently discharge exhaust air from multiple radiators with a compact device configuration.

[0053] (Note 7) The cooling device described in Appendix 2 has a central axis oriented vertically, and the first and second central exhaust ducts may have outlets facing upward. This cooling device can suppress the influence of exhaust air on adjacent containers, thus facilitating installation on containers.

[0054] (Note 8) The cooling device described in Appendix 7 may have the first radiator taking in outside air from the first direction and the second radiator taking in outside air from the second direction. This cooling device facilitates the dense arrangement of containers because, when multiple similar containers are arranged, outside air can be taken in from a direction that is less affected by exhaust air.

[0055] (Note 9) The fuel cell system (10) of this disclosure is a fuel cell system comprising a cooling device described in any one of appendices 1 to 8 and a plurality of fuel cells (22), wherein the number of fuel cells is the same as the number of the first radiator and the second radiator, and the plurality of fuel cells are connected in parallel to the cooling device. This fuel cell system can be manufactured at low cost because it can utilize fuel cells and radiators for vehicles that are produced in large quantities.

[0056] While this disclosure has been described in detail, it is not limited to the individual embodiments described above. These embodiments can be added, replaced, modified, partially deleted, etc., in any way that does not depart from the gist of this disclosure or from the spirit of this disclosure derived from the claims and their equivalents. These embodiments can also be implemented in combination. For example, the order of operations and processes in the embodiments described above are given as examples only and are not limited thereto. The same applies when numerical values ​​or mathematical formulas are used in the description of the embodiments described above. [Explanation of Symbols]

[0057] 10…Fuel cell system 16, 16A, 64…Cooling device 22…Fuel cell 26…First centralized exhaust duct 28...Second central exhaust duct 30A...First radiator 30B...Second radiator 32...First connecting duct 34...Second connection duct 36, 36A, 74...Frame 46, 46A, 70... First duct support section 48, 48A, 72... Second duct support section

Claims

1. First centralized exhaust duct and A second central exhaust duct is arranged parallel to and adjacent to the first central exhaust duct, A plurality of first radiators arranged around the first centralized exhaust duct, Multiple first connecting ducts that guide the exhaust air from multiple first radiators to the first central exhaust duct, A plurality of second radiators arranged around the second centralized exhaust duct, Multiple second connecting ducts that guide the exhaust air from multiple second radiators to the second central exhaust duct, The system comprises a frame that supports the first centralized exhaust duct and the second centralized exhaust duct, Multiple first connecting ducts are connected to the first central exhaust duct in a direction that creates a flow of exhaust air in a first rotational direction inside the first central exhaust duct. A cooling device in which a plurality of the second connecting ducts are connected to the second central exhaust duct in a manner that creates a flow of exhaust air inside the second central exhaust duct in a second rotational direction opposite to the first rotational direction.

2. A cooling device according to claim 1, The first radiator is positioned in a first direction perpendicular to the central axis of the first concentrated exhaust duct, and in a second direction opposite to the first direction, The second radiator is a cooling device in which one unit is positioned in the first direction and one in the second direction of the second centralized exhaust duct.

3. A cooling device according to claim 2, The first connecting duct extending from the first radiator in the first direction is connected to the first central exhaust duct at a position offset in a third direction perpendicular to the first direction from the first connecting duct extending from the first radiator in the second direction. A cooling device in which the second connecting duct extending from the second radiator in the first direction is connected to the second central exhaust duct at a position offset in a fourth direction opposite to the third direction from the second connecting duct extending from the second radiator in the second direction.

4. A cooling device according to claim 3, The second centralized exhaust duct is a cooling device located in the fourth direction of the first centralized exhaust duct.

5. A cooling device according to claim 4, The aforementioned frame is A first duct support portion that abuts against and supports the first central exhaust duct and the second central exhaust duct from a first direction, A cooling device comprising a first central exhaust duct and a second duct support portion that abuts against and supports the second central exhaust duct from the second direction.

6. A cooling device according to claim 2, A cooling system in which the first radiator, the first connecting duct, the second radiator, and the second connecting duct are arranged in multiple stages in the direction of the central axis.

7. A cooling device according to claim 2, The aforementioned central axis is oriented vertically, and the first and second central exhaust ducts have outlets facing upwards, in a cooling device.

8. A cooling device according to claim 7, wherein the first radiator takes in outside air from the first direction, and the second radiator takes in outside air from the second direction.

9. A fuel cell system comprising a cooling device according to any one of claims 1 to 8 and a plurality of fuel cells, The number of fuel cells is the same as the number of the first radiator and the second radiator. A fuel cell system in which multiple fuel cells are connected in parallel to the cooling device.

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