JP2007311150A - Piping-integrated radiator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To aim at improvement of flexibility of a cooling system including piping as well as improvement of assembling workability of piping. <P>SOLUTION: A radiator body 57 with a whole body in a rectangular shape is structured of a core part 58 equipped with a plurality of heat exchanger tubes 64 and fins 66, an upper tank part 60 and a lower tank part 62. An accessory piping 56 is integrally coupled and fixed to the radiator body 57 arranged in an L shape as a whole along an outer contour of the radiator body 57. An inside top end part of the accessory piping is linked with an inside space of the upper tank part 60. A plurality of connection ports 76, 78, 80, 82, 84, 86 connectable to a plurality of elements through the piping are provided at a plurality of places of the accessory piping 56. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention includes a radiator main body that exchanges heat between a refrigerant that cools a plurality of elements and air that passes outside, and an accessory pipe that is connected between the plurality of elements and the radiator main body and distributes the refrigerant inside. The present invention relates to a pipe-integrated radiator.

  Since there is little influence on the environment, a fuel cell is mounted on a vehicle. In the fuel cell, for example, a fuel gas such as hydrogen is supplied to the anode side of the fuel cell stack, an oxidizing gas containing oxygen such as air is supplied to the cathode side, and necessary electric power is taken out by a reaction through the electrolyte membrane. The fuel cell stack generates heat due to this reaction, and a coolant such as cooling water is allowed to flow through the fuel cell stack for cooling, and this is cooled with a radiator or the like. If the temperature of the fuel cell is low, it is necessary to warm the fuel cell stack. Therefore, the refrigerant is heated to an appropriate temperature with a heater or the like. In this way, the refrigerant is allowed to flow through the fuel cell stack and its temperature is adjusted.

  Further, an air compressor (ACP), which is a gas compressor, is used in order to bring the oxidizing gas supplied to the cathode side of the fuel cell stack to an appropriate pressure. Since this air compressor also generates heat in response to its operation, cooling with a heat exchanger called an intercooler is considered. Furthermore, it is also considered that an ion exchanger that passes a part of the refrigerant flowing through the fuel cell stack is provided to remove conductive ions in the refrigerant. Thus, in the fuel cell, various elements for flowing the refrigerant are provided, and the refrigerant is cooled by the radiator. The refrigerant supplied to the plurality of elements is directly cooled by a radiator, and a fluid circuit provided with a radiator in the middle and another fluid circuit provided with a cooling element in the middle are provided to flow through two fluid circuits. It is also conceivable to heat exchange another fluid.

  For example, Patent Document 1 describes a fuel cell cooling system provided with a first fluid circuit through which a first fluid florinate flows and a second fluid circuit through which a second fluid LLC flows. A fuel cell stack and a first pump are provided in the first fluid circuit. In addition, a combustion heater and a second pump are provided in the second fluid circuit. The second fluid circuit is provided with a flow path provided with a combustion heater in the middle and a bypass flow path in parallel therewith, and a radiator is provided in the middle of the bypass flow path. Then, heat exchange is performed between the florinart flowing through the first fluid circuit and the LLC flowing through the second fluid circuit by a heat exchanger. As a result, by passing LLC through the radiator, the florinart flowing through the first fluid circuit can be cooled, and the temperature can be lowered when the temperature of the fuel cell stack is high.

JP 2001-167778 A

  In a fuel cell cooling system such as the structure described in Patent Document 1, a plurality of pipes connected to a plurality of elements are provided on at least one side of a refrigerant inlet and a refrigerant outlet of a radiator. There is. For this reason, the branch part of a some piping may exist in the part away from the radiator. However, if there are many branch parts of the pipe at a position away from the radiator, not only will the number of parts of the pipe increase, but the arrangement of the pipe will be complicated. For this reason, there is room for improvement with respect to the installation property of the cooling system including the piping to the vehicle. In order to explain this in detail, the structure of the prior invention which is currently considered for the above cooling system will be described with reference to FIGS.

  FIG. 4 is a diagram schematically showing a cooling system 10 for cooling a plurality of elements constituting the fuel cell power generation system of the prior invention. FIG. 5 shows the cooling system 10 more specifically than FIG. It is a perspective view. In this cooling system 10, an outlet of a cooling water pump (WP) 18 that is a circulation pump is connected to a refrigerant inlet 14 of the fuel cell stack 12 via a pipe 16. A refrigerant inlet 26 of the radiator 24 is connected to the refrigerant outlet 20 of the fuel cell stack 12 via a pipe 22. As described above, the fuel cell supplies a fuel gas such as hydrogen to the anode side of the fuel cell stack 12, supplies an oxidizing gas containing oxygen, for example, air, to the cathode side, and requires electric power required for reaction through the electrolyte membrane. Take out.

  Further, a refrigerant outlet 32 of the radiator 24 is connected to a first inlet 30 of a rotary valve (RV) 28 that is a fluid switching valve via a pipe 34. The radiator 24 is mounted on the front portion of the vehicle and performs heat exchange between the refrigerant flowing inside and the air passing outside. In the case of the prior invention, cooling water is used as the refrigerant. The cooling water is an ethylene glycol antifreeze that does not color LLC. The flow path through which the cooling water can circulate between the fuel cell stack 12 and the radiator 24 is referred to as a first flow path 36.

  Further, the second flow is provided between the outlet side of the coolant pump 18 of the first flow path 36 and the refrigerant inlet 14 of the fuel cell stack 12 and to the refrigerant outlet 20 side of the fuel cell stack 12 of the first flow path 36. The path 38 is connected in parallel with the fuel cell stack 12 with respect to the refrigerant flow. An ion exchanger 40 is provided in the middle of the second flow path 38. The ion exchanger 40 has an ion exchange resin that functions as an ion removal filter, and removes conductive ions contained in the refrigerant. That is, in a fuel cell that generates a high voltage, if conductive ions are present in the refrigerant, it is necessary to prevent leakage to peripheral components through a metal part that contacts the refrigerant. By providing the ion exchanger 40 as described above, this leakage can be effectively prevented.

  In addition, a third flow path 44 is provided between the outlet 42 of the rotary valve 28 and the inlet of the cooling water pump 18 and on the refrigerant outlet 20 side of the fuel cell stack 12 in the first flow path 36 with respect to the refrigerant flow. The flow path 38 is connected in parallel. In the middle of the third flow path 44, an air compressor 46, which is a gas compressor, and an intercooler 48 are provided in series. The air compressor 46 is a gas booster that compresses the supply gas by a motor (not shown) to increase its pressure. The intercooler 48 cools the supply gas compressed by the air compressor 46.

  Further, a fourth flow path 52 is provided on the second inlet 50 of the rotary valve 28 and the refrigerant outlet 20 side of the fuel cell stack 12 in the first flow path 36, and the second flow path 38 and the third flow regarding the refrigerant flow. It is connected in parallel with the path 44. A bypass channel 54 is provided in parallel in the middle of the fourth channel 52, and a heater 55 that generates heat by combustion or power generation is provided in the middle of the bypass channel 54.

  The outlet 42 of the rotary valve 28 is connected to the inlet of the cooling water pump 18. The rotary valve 28 can switch between a case where the refrigerant flows to the radiator 24 and a case where a part of the refrigerant flows to the heater 55. Switching of the rotary valve 28 is controlled by a control unit (not shown). A signal from detection means for detecting the operation state such as the temperature of the fuel cell stack 12 is input to the control unit, and based on this signal, the number of rotations of the cooling water pump 18, switching of the rotary valve 28, and the like are controlled. . The pipes 16 and 22 can be rubber hoses, stainless steel pipes, or the like.

With this configuration, in the cooling system 10 of the prior invention, the temperatures of the fuel cell stack 12, the air compressor 46, and the intercooler 48, which are elements constituting the fuel cell power generation system, can be appropriately set. . However, as shown in FIG. 5, in the prior invention, the pipe 22 constituting the first flow path 36, the second flow path 38, and the second flow path are formed on the refrigerant inlet 26 side of the radiator 24 at a portion away from the radiator 24. There are many branch portions A ₁ , A ₂ ... A ₆ with the pipes constituting each of the third flow path 44, the fourth flow path 52, and the bypass flow path 54. Therefore, it is not only necessary to provide a lot of piping, but in a vehicle equipped with a fuel cell, many branch portions A ₁ , A ₂ ... A ₆ existing in a narrow space around the fuel cell stack 12. Since it is necessary to branch the pipe from the pipe, it is necessary to adopt a pipe routing configuration that prevents interference between the pipes, and the arrangement of the pipes becomes complicated. Therefore, in a radiator that performs heat exchange of a refrigerant that cools a plurality of elements, as in the case of cooling a fuel cell power generation system, there is room for improvement in terms of installation of the cooling system 10 including piping.

In addition, the arrangement of the pipes becomes complicated, and there are many pipe branch portions A ₁ , A ₂ ... A _{6 at} positions that are greatly separated from each other, so there is room for improvement in the work of assembling the pipes. .

  An object of the present invention is to provide a pipe-integrated radiator capable of improving the installation of a cooling system including pipes and improving the workability of assembling pipes.

  A pipe-integrated radiator according to the present invention is connected between a radiator body that exchanges heat between a refrigerant that cools a plurality of elements and air that passes outside, and between the plurality of elements and the radiator body, and the refrigerant flows inside. The accessory piping has a plurality of connection ports that can be connected directly to or via a plurality of elements, and the accessory piping is arranged in the radiator main body along the outer shape of the radiator main body. It is characterized by being joined together.

  The pipe-integrated radiator according to the present invention preferably has an inlet tank part into which the refrigerant is sent and an outlet tank part through which the refrigerant is sent out, and the pipe wall of the attached pipe is arranged along the outer shape of the radiator body. At the same time, the accessory piping is directly coupled to the inlet tank portion or the outlet tank portion, and a part of the wall of the accessory piping is opened toward the internal space of the inlet tank portion or the outlet tank portion.

  In the pipe-integrated radiator according to the present invention, preferably, the accessory pipe is integrally coupled to at least one outer side of the width direction end portion and the vertical direction end portion of the radiator main body. More preferably, the entire radiator body is rectangular, and the attached piping is entirely linear or L-shaped so as to follow the outer shape of the radiator body.

  In the pipe-integrated radiator according to the present invention, preferably, the attached pipe is made of resin.

  In the pipe-integrated radiator according to the present invention, it is preferably used to cool the refrigerant supplied to a plurality of elements constituting the fuel cell power generation system.

  In the case of the radiator with integrated pipe according to the present invention, the accessory pipe is connected to the radiator body in a state of being integrally arranged along the outer shape of the radiator body, and the accessory pipe is connected to a plurality of elements directly or via the pipe. Has a possible connection. For this reason, it is possible to reduce the number of branches of the pipe for connecting to a plurality of elements in a part away from the pipe-integrated radiator, and it is possible to give the auxiliary pipe a part of the pipe. Therefore, the number of parts of the piping can be reduced, and an excessively large space is not required for installing the piping, so that the installation of the cooling system including the piping can be improved. In addition, in the attached piping, a plurality of connection ports connected to the piping or elements can be provided at positions close to each other, so that the assembling workability of the piping can be improved.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. 1 to 3 show the present embodiment. In the present embodiment, as shown in the schematic diagram of FIG. 1, in the cooling system 10 for cooling the elements constituting the fuel cell power generation system of the prior invention shown in FIG. The accessory pipe 56 that fulfills the above is provided integrally with the radiator main body 57 to form a pipe-integrated radiator 59. In FIG. 1, a portion indicated by a broken line represents a portion corresponding to the attached pipe 56. The feature of the present embodiment is that such an attached pipe 56 is integrally provided along the outer shape of the radiator main body 57. 1 and 3, the configuration of the cooling system 10 other than the pipe-integrated radiator 59 is the same as that of the prior invention shown in FIGS. Therefore, the overlapping description is omitted or simplified, and the following description will focus on the characteristic features of the present invention.

  As shown in detail in FIG. 2, the pipe-integrated radiator 59 includes a core portion 58, an upper tank portion 60 that is an inlet tank portion provided at each of upper and lower ends of the core portion 58, and a lower tank that is an outlet tank portion. A part 62 and an attached pipe 56 are provided. The upper tank part 60 is for sending refrigerant, and the lower tank part 62 is for sending refrigerant. The core portion 58 includes a plurality of heat transfer tubes 64 arranged in parallel to each other in the width direction (the left-right direction in FIG. 2), and a plurality of fins 66 coupled so as to be sandwiched between adjacent heat transfer tubes 64. And the upper-and-lower-ends part of the some heat exchanger tube 64 is connected to the upper tank part 60 and the lower tank part 62 in the state letting it pass inside. A pair of side plates 68 are provided at both ends in the width direction of the core portion 58. Further, fins 66 are also provided between the side plate 68 and the adjacent heat transfer tube 64.

  The lower tank 62 closes one end (the right end in FIG. 2), and has the refrigerant outlet 32 at the other end (the left end in FIG. 2). The refrigerant outlet 32 can be connected to the first inlet 30 (FIGS. 1 and 3) of the rotary valve 28 via the pipe 34 (FIGS. 1 and 3). Further, the coupling portion 70 is coupled to the lower side of the lower tank portion 62. In the case of the present embodiment, the radiator main body 57 is constituted by the core portion 58, the upper tank portion 60 and the lower tank portion 62. The radiator body 57 has a rectangular shape as a whole, and heats a plurality of elements, that is, a fuel cell stack 12 to be described later, an air compressor 46, a refrigerant that cools the intercooler 48, and air that passes outside. Replace and cool this refrigerant.

  The attached pipe 56 is integrally coupled and fixed to one end in the length direction of the upper tank portion 60 and the lower tank portion 62 (the right end portion in FIG. 2) and the lower end portion of the coupling portion 70. The attached pipe 56 is entirely L-shaped by synthetic resin along the side surface of the side plate 68 provided at one end in the width direction of the core portion 58 (the right end in FIG. 2) and the lower end surface of the coupling portion 70. Made in shape. That is, the attached pipe 56 has a first portion 72 that extends in the up-down direction and a second portion 74 that is bent at a substantially right angle from the lower end portion of the first portion 72 and extends in parallel with the lower tank portion 62. The first connection port 76, the second connection port 78, the third connection port 80, the second connection port 56, the four portions in the length direction of the first portion 72, and the two portions in the length direction of the second portion 74, A fourth connection port 82, a fifth connection port 84, and a sixth connection port 86 are provided.

  Such an accessory pipe 56 is directly coupled and fixed to one end portion in the length direction of the upper tank portion 60 and the lower tank portion 62 and the lower end portion of the coupling portion 70. That is, the pipe wall of the first part 72 of the attached pipe 56 is coupled and fixed to one end in the length direction of the upper tank part 60 and the lower tank part 62, and the pipe wall of the second part 74 is attached to the lower surface of the coupling part 70. These are coupled and fixed in a state of being arranged in parallel with the lower tank portion 62. As a result, the pipe wall of the attached pipe 56 having an overall L shape is integrally coupled and fixed to the radiator body 57 in a state of being arranged along the outer shape of the radiator body 57 having an overall rectangular shape. Further, by opening an opening 87 at the upper end of the pipe wall of the first portion 72 toward the internal space at one end in the length direction of the upper tank portion 60, the inside of the first portion 72 is made to be in the upper tank portion 60. It leads to the inside. In the illustrated example, a gap 88 is provided between the side plate 68 provided at one end in the width direction of the core portion 58 and the first portion 72. However, the gap 88 may be eliminated or the side plate 68 may be removed. And the first portion 72 can be directly coupled.

  Moreover, as the coupling | bond part 70, what has various shapes and materials can be used. For example, as the material of the coupling portion 70, either a material having heat conductivity or a material having heat insulation can be used.

  As shown in FIG. 3, the pipe-integrated radiator 59 configured in this way is used in combination with a plurality of elements constituting the cooling system 10 to cool cooling water that is a refrigerant supplied to the plurality of elements. . That is, the refrigerant outlet 20 of the fuel cell stack 12 is connected to the first connection port 76 of the accessory pipe 56 via the pipe 22. Further, the downstream end of the pipe of the second flow path 38 provided with an ion exchanger is connected to the second connection port 78. The upstream end of the pipe of the second flow path 38 is connected in the middle of the pipe 16 connected to the downstream side of the cooling water pump.

  Further, the upstream end of the pipe constituting the bypass passage 54 provided with the heater 55 is connected to the third connection port 80. In addition, an upstream end of a pipe constituting the third flow path 44 provided with the air compressor 46 and the intercooler 48 is connected to the fourth connection port 82. Further, the downstream end of the pipe constituting the bypass flow path 54 is connected to the fifth connection port 84. Further, the second inlet 50 of the rotary valve 28 is connected to the sixth connection port 86 via a pipe constituting the second flow path 52, and the first inlet 30 of the rotary valve 28 is connected to the lower tank portion 62. The refrigerant outlet 32 provided is connected via a pipe 34.

  Although not shown in FIG. 3, a cooling fan 90 is provided on one side in the thickness direction of the pipe-integrated radiator 59 (right side in FIG. 3), and the cooling fan 90 allows the core portion 58 of the pipe-integrated radiator 59 to be Force air through in the thickness direction. When the fuel cell power generation system is mounted on a vehicle, the pipe-integrated radiator 59 is disposed at the front of the vehicle, and air is passed through the pipe-integrated radiator 59 in the thickness direction by running wind without providing a cooling fan. It can also be passed through.

  Then, in response to the switching of the rotary valve 28, the cooling water is circulated by the cooling water pump 18 to the first flow path 36 including the pipe-integrated radiator 59, and the fuel cell stack 12, which is an element of the fuel cell power generation system, The air compressor 46 and the intercooler 48 are cooled, and a part of the cooling water is passed through the ion exchanger 40. Further, by switching the rotary valve 28 so that the cooling water is not supplied to the pipe-integrated radiator 59, a part of the cooling water can be passed through the heater 55 and the cooling water can be heated. As the cooling water, as in the case of the prior invention shown in FIGS. 4 and 5, a non-colored LLC of ethylene glycol antifreeze is used. However, mere LLC can be used, or a liquid other than LLC, for example, a liquid having electrical insulating properties such as a fluorinated inert liquid such as Fluorinert (trade name) can be used.

In the case of the pipe-integrated radiator 59 of the present embodiment configured as described above, the accessory pipe 56 is coupled to the radiator main body 57 in a state of being integrally arranged along the outer shape of the radiator main body 57. Has connection ports 76, 78, 80, 82, 84, 86 that can be connected to a plurality of elements such as the fuel cell stack 12 and the air compressor 46 through piping. For this reason, it is possible to reduce the number of pipe branch portions B ₁ and B ₂ for connecting to a plurality of elements to two in a portion away from the pipe-integrated radiator 59. That is, as can be seen by comparing FIG. 3 showing this embodiment and FIG. 5 showing the prior invention, according to this embodiment, the refrigerant outlet 20 of the fuel cell stack 12 and the pipe-integrated radiator 59 It is not necessary to provide the branch portion A ₁ (FIG. 5) for branching another pipe in the middle of the pipe 22 connecting the first connection port 76, and this other pipe can be omitted. In addition, the pipe constituting the fourth flow path 52 connecting the upstream portion of the heater 55 and the upstream portion of the air compressor 46 and the second inlet 50 of the rotary valve 28 is shorter than in the case of the above-described prior invention. it can.

In this way, the branch portions B ₁ and B ₂ of the pipe existing in the part away from the pipe-integrated radiator 59 can be reduced, and a part of the pipe can be given to the attached pipe 56. For this reason, the number of parts of the piping can be reduced, and an excessively wide space is not required to install the piping. As a result, the installation property of the cooling system 10 including the piping can be improved. In addition, since the plurality of connection ports 76, 78, 80, 82, 84, 86 connected to the pipe can be provided in the attached pipe 56 at positions close to each other, the work of assembling the pipe can be improved. Furthermore, since the gap between the radiator main body 57 and the accessory pipe 56 can be eliminated or reduced, it is easy to secure an installation space between the fuel cell power generation system and the cooling system 10 in the vehicle.

In addition, since the attached pipe 56 is integrally coupled to the outside of the width direction one end and the bottom end of the radiator main body 57, in the space on one side in the thickness direction of the pipe-integrated radiator 59 (right side in FIG. 3), It is possible to reduce the presence of the branch portions B ₁ and B ₂ of the piping, and to further improve the installation of the cooling system 10 including the piping.

  Further, since the attached pipe 56 is made of resin, even if the attached pipe 56 has a complicated shape, it can be manufactured at low cost, and the cost of the entire pipe-integrated radiator 59 can be reduced. However, in the present invention, the accessory pipe 56 can be made of other materials such as a metal such as stainless steel other than the resin. However, when the accessory pipe 56 is made of metal, when the accessory pipe 56 has a complicated shape, a troublesome work such as brazing of another part may be required, which greatly reduces the cost. It may not be possible.

  In the present embodiment, a specific diagram corresponding to FIG. 3 is omitted, but in the present embodiment, the refrigerant outlet 32 of the pipe-integrated radiator 59 and the first inlet of the rotary valve are shown in the portion surrounded by the one-dot chain line a in FIG. 30 may be directly connected to the refrigerant outlet 32 of the pipe-integrated radiator 59 and the first inlet 30 of the rotary valve without being connected by the pipe 34. In this case, the cost of the cooling system 10 including the piping can be further reduced.

  Note that the pipe-integrated radiator of the present invention does not limit the position of the accessory pipe 56 as shown in FIG. 2. For example, the pipe-integrated radiator extends along only one of the width direction end and the vertical end of the radiator body 57. The attached pipe 56 can be provided integrally with the radiator main body 57. In this case, for example, the attached piping is made to be a straight shape, and the attached piping is connected to the radiator body along only one of the width direction end and the vertical direction end of the radiator body. In a state of being arranged in a single, it is coupled and fixed together.

  In addition, the present invention is not limited to the use of the pipe-integrated radiator arranged in the vertical direction (in the vertical direction), and the pipe-integrated radiator 59 is disposed in an inclined state with respect to the vertical direction. Can also be used. Further, in the above-described embodiment, the pipe-integrated radiator 59 is a so-called down flow in which cooling water flows in the vertical direction inside the core portion 58, but the heat transfer tubes constituting the core portion are separated in the vertical direction. A plurality of the heat transfer tubes can be connected to a pair of tank portions provided along the vertical direction on both sides in the width direction. In this case, it becomes what is called a cross flow in which cooling water flows in the width direction inside the core portion. In this case, one of the pair of tank portions is an inlet tank portion, and the other is an outlet tank portion.

  Further, the present invention is not limited to the arrangement of a plurality of elements such as the fuel cell stack 12 for supplying the refrigerant, the rotary valve 28, the intercooler 48, etc. as shown in FIG. Can be in various positional relationships.

It is a schematic diagram which shows the cooling system comprised including the piping integrated radiator of embodiment of this invention. It is a front view which takes out only a pipe-integrated radiator and shows in detail. FIG. 2 is a perspective view showing the cooling system shown in FIG. 1 more specifically than in FIG. 1. It is a schematic diagram which shows the cooling system comprised including the radiator of a prior invention. FIG. 5 is a perspective view showing the cooling system shown in FIG. 4 more specifically than in FIG. 4.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Cooling system, 12 Fuel cell stack, 14 Refrigerant inlet, 16 piping, 18 Cooling water pump, 20 Refrigerant outlet, 22 Piping, 24 Radiator, 26 Refrigerant inlet, 28 Rotary valve, 30 1st inlet, 32 Refrigerant outlet, 34 Piping , 36 1st flow path, 38 2nd flow path, 40 Ion exchanger, 42 Outlet, 44 3rd flow path, 46 Air compressor, 48 Intercooler, 50 2nd inlet, 52 4th flow path, 54 Bypass flow path , 55 Heater, 56 Attached piping, 57 Radiator body, 58 Core part, 59 Pipe-integrated radiator, 60 Upper tank part, 62 Lower tank part, 64 Heat transfer pipe, 66 Fin, 68 Side plate, 70 Joint part, 72 1st Part, 74 second part, 76 first connection port, 78 second connection port, 80 third connection port, 82 first Connection port, 84 a fifth connection port, 86 sixth connecting port, 87 opening, 88 gaps, 90 cooling fan.

Claims (6)

A radiator body that exchanges heat between the refrigerant that cools the plurality of elements and the air that passes outside,
Connected between a plurality of elements and the radiator body, and has an attached pipe for circulating the refrigerant inside,
Attached piping has multiple connection ports that can be connected to multiple elements directly or via piping,
A pipe-integrated radiator characterized in that an accessory pipe is integrally connected to the radiator body in a state of being arranged along the outer shape of the radiator body. The pipe-integrated radiator according to claim 1, further comprising an inlet tank part into which the refrigerant is sent, and an outlet tank part from which the refrigerant is sent out,
Place the pipe wall of the accessory pipe along the external shape of the radiator body, and connect the accessory pipe directly to the inlet tank section or outlet tank section, and part of the pipe wall of the accessory pipe inside the inlet tank section or outlet tank section. A pipe-integrated radiator that is open to the space.   3. The pipe-integrated radiator according to claim 1 or 2, wherein an accessory pipe is integrally coupled to at least one outer side of a width direction end portion and a vertical direction end portion of the radiator main body. Body type radiator.   The pipe-integrated radiator according to claim 3, wherein the entire radiator body is rectangular, and the attached pipe is entirely linear or L-shaped along the outer shape of the radiator body. Body type radiator.   The pipe-integrated radiator according to any one of claims 1 to 4, wherein the attached pipe is made of resin. 6. A pipe-integrated radiator according to claim 1, wherein the pipe-integrated radiator is used to cool a refrigerant supplied to a plurality of elements constituting the fuel cell power generation system. Radiator.

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