JP2009126191A - Cooling system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique for improving heat radiation efficiency of a heat exchanger. <P>SOLUTION: The cooling system for a moving body is provided with a first heat exchanger, a second heat exchanger, a first flow passage forming part, a second flow passage forming part, a fan, and a first communication passage forming part. The second flow passage forming part is provided with a first opening and closing part for opening and closing an opening of the second flow passage forming part. In the first communication passage forming part, an end is connected between the second heat exchanger and the first opening and closing part of the second flow passage forming part and the other end is connected with the first flow passage forming part downstream of an air flow distributing in the first flow passage forming part from the first heat exchanger. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cooling system for a moving body.

  2. Description of the Related Art A vehicle equipped with a fuel cell conventionally includes a heat exchanger for a fuel cell, a heat exchanger for air conditioning, and a heat exchanger for electronic components (for example, a motor, an inverter, etc.). Thus, when a plurality of heat exchangers are provided, conventionally, these heat exchangers are arranged in series along the flow direction of the traveling wind.

  As described above, when a plurality of heat exchangers are arranged in a stacked manner, the air for cooling the cooling medium flowing through the heat exchanger is heated and the temperature of the air is increased each time it passes through one heat exchanger. Since it raises, the heat dissipation efficiency of the heat exchanger arrange | positioned in the downstream of a wind falls. Such a problem is not limited to a cooling system mounted on a vehicle, but is a problem common to cooling systems including a plurality of heat exchangers mounted on other moving bodies.

  Therefore, for example, a heat exchanger for a fuel cell and a heat exchanger for air conditioning are arranged so as not to overlap with each other, and the arrangement of a fan for allowing air to pass through the heat exchanger is devised. Has been proposed (see, for example, Patent Document 1).

JP 2006-076380 A JP 2005-126029 A

  However, depending on the size of the space in which the heat exchanger is arranged and the size of the heat exchanger, the arrangement of the heat exchanger as described above may not be possible. This invention is made | formed in view of such a subject, and it aims at providing the other technique which improves the thermal radiation efficiency of a heat exchanger.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

Application Example 1 A cooling system for a moving body, including at least a first heat exchanger and a second heat exchanger,
A first flow path forming section for flowing air flowing into the moving body through the first heat exchanger;
A second flow path forming section for flowing air flowing into the movable body through the second heat exchanger;
A fan that forcibly flows air outside the moving body into the first flow path forming unit;
A first communication path forming section that communicates the first flow path forming section and the second flow path forming section;
With
The second flow path forming part is
A first opening / closing portion for opening / closing the opening of the second flow path forming portion;
The first communication path forming part is
One end of the second flow path forming unit is connected between the second heat exchanger and the first opening / closing unit, and the other end of the first flow path forming unit is A cooling system, wherein the cooling system is connected to a downstream of a flow of air flowing through the first flow path forming unit rather than the first heat exchanger.

  According to the cooling system of Application Example 1, since the first heat exchanger and the second heat exchanger are not stacked, the heat dissipation efficiency of each heat exchanger can be improved. Further, the first flow path forming portion and the second flow path forming portion are communicated by the first communication path forming portion, and provided with an opening / closing portion capable of opening and closing the opening of the second flow path forming portion. For this reason, when the opening of the second flow path forming portion is closed, the outside air can be caused to flow into both the first and second flow path forming portions by one fan, thereby suppressing an increase in cost. be able to.

[Application Example 2] In the cooling system according to Application Example 1,
The fan is
In the first flow path forming part, the first flow path forming part is disposed downstream of the air flow rather than the place where the other end of the first communication path forming part is connected,
In the second flow path forming part,
The cooling system according to claim 1, wherein the second heat exchanger is arranged upstream of a flow of air flowing through the second flow path forming unit with respect to the first opening / closing unit.

  In the cooling system of Application Example 2, since the fan is disposed downstream of the air flow with respect to the first heat exchanger, the first, second, and second fans can be easily obtained by sucking outside air. It is possible to allow air to flow into both of the flow path forming portions.

[Application Example 3] In the cooling system according to Application Example 1 or 2,
The opening / closing part is
The cooling system according to claim 1, wherein the cooling system is a ram pressure valve that opens the air flow path by the pressure of the air flowing into the second flow path forming portion from the outside of the moving body.

  In this way, the second flow path forming portion can be opened using the pressure of the air flowing into the second flow path forming portion from the outside of the moving body, thereby simplifying the configuration. Can do.

Application Example 4 In the cooling system according to any one of Application Examples 1 to 3,
The first communication path forming part is
A cooling unit comprising a blocking unit that blocks communication between the first channel forming unit and the second channel forming unit when the second channel forming unit is open. system.

  In this way, when the second flow path forming part is open, the first communication path forming part is closed, so compared to the case where the first communication path forming part is open, The amount of air that flows into the first flow passage forming portion by the fan can be increased. Therefore, the heat dissipation efficiency of the heat exchanger arranged in the first flow path forming part can be further improved.

Application Example 5 In the cooling system according to any one of Application Examples 1 to 4,
The moving body is
A fuel cell and auxiliary equipment for the fuel cell;
The first heat exchanger is a heat exchanger for the fuel cell;
The cooling system, wherein the second heat exchanger is a heat exchanger for the auxiliary machinery.

Application Example 6 In the cooling system according to any one of Application Examples 1 to 5,
Further comprising a third heat exchanger;
The cooling system, wherein the third heat exchanger is disposed in the first flow path forming unit.

  If it does in this way, air can be distribute | circulated to all the 1st-3rd heat exchangers with one fan.

Application Example 7 In the cooling system according to Application Example 6,
The mobile body includes a cooling system,
The cooling system according to claim 3, wherein the third heat exchanger is a heat exchanger for the cooling system.

[Application Example 8] In the cooling system according to any one of Application Examples 1 to 5,
A third heat exchanger;
A third flow path forming part for circulating the air flowing into the moving body through the third heat exchanger;
A second communication path forming section that communicates the first flow path forming section and the third flow path forming section;
Further comprising
The third flow path forming part is
A second opening / closing portion for opening / closing the opening of the third flow path forming portion;
The second communication path forming part is
One end of the third flow path forming unit is connected between the third heat exchanger and the second opening / closing unit, and the other end of the first flow path forming unit is A cooling system, wherein the cooling system is connected to a downstream of a flow of air flowing through the first flow path forming unit rather than the first heat exchanger.

  In this way, the first to third heat exchangers are arranged so as not to overlap each other, and air can be passed through the three heat exchangers with a single fan, thereby suppressing an increase in cost. Thus, the heat radiation efficiency can be improved.

  The present invention can be realized in various forms. For example, the present invention can be realized in the form of a cooling system, a fuel cell system including the cooling system, a moving body equipped with the fuel cell system, and the like. .

A. First embodiment:
A1. Example configuration:
FIG. 1 is an explanatory diagram showing the configuration of a cooling system 100A as a first embodiment of the present invention. In the present embodiment, the cooling system 100A is mounted on the fuel cell vehicle 1000. The fuel cell vehicle 1000 is a vehicle that uses a fuel cell (not shown) as a main power source and a secondary battery (not shown) as an auxiliary power source, drives a motor (not shown), and travels by the driving force of the motor. FIG. 1 is a view of the fuel cell vehicle 1000 as viewed from above, and shows a part of the front side of the vehicle. Hereinafter, when the arrangement of each part is described, the directions “front”, “rear”, “left”, and “right” are indicated with respect to the driver in the vehicle. As shown by a broken line in FIG. 1, the fuel cell vehicle 1000 is provided with a ventilation hole 1020 for allowing outside air to flow into the vehicle. As shown in the figure, the traveling wind naturally flows into the vehicle through the ventilation hole 1020 during traveling.

  As shown in the figure, the cooling system 100A includes a fuel cell radiator 10, a cooling condenser 20, an accessory radiator 30, a first flow path forming section 40, a second flow path forming section 50, The communication path forming unit 60 and the fan 70 are mainly provided. The fuel cell radiator 10 radiates cooling water that cools the fuel cell. The cooling condenser 20 condenses the cooling refrigerant. An evaporator (not shown) for vaporizing the refrigerant is connected to the cooling condenser 20 by piping, and the refrigerant circulates between the cooling condenser 20 and the evaporator, and the vaporization and condensation are repeated, whereby the interior of the fuel cell vehicle 1000 is obtained. The heat of the car is absorbed and released outside the passenger compartment to cool the passenger compartment.

  Auxiliary radiator 30 radiates cooling water that cools auxiliary machinery used for power generation of the fuel cell and auxiliary machinery used for conversion of electric power generated by the fuel cell into driving force. Auxiliary equipment used for power generation of the fuel cell is, for example, a hydrogen pump (not shown), an air compressor (not shown), etc., and an auxiliary equipment used for conversion to driving force is, for example, a PCU (power control unit) ), A motor (not shown), and the like.

  The fan 70 is a resin fan that forcibly introduces outside air into the first flow path forming unit 40, and is rotationally driven by a motor (not shown). The fan 70 can be operated, stopped, etc. according to the temperature of the fuel cell radiator 10, the cooling condenser 20, the auxiliary radiator 30, the state of the traveling wind, the state of the fuel cell, cooling, auxiliary equipment, etc. Are controlled by an ECU (electronic control unit: not shown) of the PCU.

  The first flow path forming unit 40 is a hollow member made of resin, and has a flow path for circulating outside air flowing into the fuel cell vehicle 1000 through the cooling capacitor 20 and the fuel cell radiator 10. Form. In the first flow path forming unit 40, the cooling capacitor 20 and the fuel cell radiator 10 are arranged in that order in the front, and 70 is arranged in the rear.

  The second flow path forming unit 50 is a hollow member made of resin, and forms a flow path for circulating the outside air flowing into the fuel cell vehicle 1000 through the auxiliary radiator 30. In the second flow path forming unit 50, the auxiliary radiator 30 is disposed in front.

  The configuration of the rear end of the second flow path forming unit 50 will be described with reference to FIG. FIG. 2 is an enlarged view showing an X portion in FIG. FIG. 2 shows the second flow path forming unit 50 as viewed from the left side. As shown in FIG. 2, the second flow path forming unit 50 includes a cylindrical cylindrical part 52 and a ram pressure valve 54 that closes the rear end of the cylindrical part 52. The ram pressure valve 54 includes a valve portion 55 and a shaft portion 56 for rotating the valve portion 55. Since there is no running wind while the fuel cell vehicle 1000 is stopped, the valve portion 55 blocks the opening at the rear end of the tubular portion 52 by its own weight. While the fuel cell vehicle 1000 is traveling, traveling wind flows into the cylindrical portion 52 through the ventilation hole 1020, so that the valve portion 55 is centered on the shaft portion 56 due to the pressure of the traveling wind (so-called ram pressure). (The position of the valve portion 55 at that time is indicated by a broken line in FIG. 2), and the rear end of the cylindrical portion 52 is opened.

  The communication path forming section 60 is a resin member that forms a communication path that connects the first flow path forming section 40 and the second flow path forming section 50. As shown in FIG. 1, one end of the communication path forming part 60 is connected between the fuel cell radiator 10 and the fan 70 in the first flow path forming part 40, and the other end is connected to the second flow path. The auxiliary unit radiator 30 of the forming unit 50 and the ram pressure valve 54 are connected. In addition, the 1st flow path formation part 40, the 2nd flow path formation part 50, and the communicating path formation part 60 are integrally formed.

  FIG. 3 is an explanatory view showing, in an enlarged manner, the vicinity of the connection portion between the second flow path forming portion 50 and the communication path forming portion 60. As illustrated, the communication path forming unit 60 includes a blocking unit 62 that blocks communication between the first flow path forming unit 40 and the second flow path forming unit 50. As shown in the drawing, the blocking part 62 includes a valve part 63 that closes an opening of a connection portion between the second flow path forming part 50 and the communication path forming part 60, and a shaft part 64 that rotates the valve part 63. . When there is a traveling wind, such as when the fuel cell vehicle 1000 is traveling, the blocking unit 62 forms a communication path with the second flow path forming unit 50 by the flow of air flowing through the accessory radiator 30. The communication with the unit 60 is blocked.

  The cooling condenser 20 or the fuel cell radiator 10 in this embodiment corresponds to the first heat exchanger in the claims, and the auxiliary radiator 30 corresponds to the second heat exchanger in the claims. Further, the communication passage forming portion 60 in this embodiment corresponds to the first communication passage forming portion in the claims, and the ram pressure valve 54 corresponds to the opening / closing portion in the claims.

A2. Example operation:
Next, the air flow in the cooling system 100A of the present embodiment will be described with reference to FIGS. When the fuel cell vehicle 1000 is stopped or traveling at a low speed, as described above, the traveling wind does not flow into the second flow path forming unit 50, and therefore, the ram pressure valve 54 provided in the second flow path forming unit 50 The rear end of the second flow path forming unit 50 is closed (FIG. 1). In such a case, when the outside air is forcibly sucked into the vehicle by the fan 70, the outside air passes through the cooling condenser 20 and the fuel cell radiator 10 and flows through the first flow path forming unit 40. At the same time, it passes through the radiator 30 for auxiliary machinery, flows from the second flow path forming section 50 through the communication path forming section 60 and flows into the first flow path forming section 40, and is then supplied to the first flow path by the fan 70. It is taken out of the flow path forming part 40.

  At this time, as shown in FIG. 3A, due to the air flow sucked by the fan 70, the valve portion 63 of the blocking portion 62 included in the communication path forming portion 60 rotates around the shaft portion 64, The air flow path from the second flow path forming unit 50 to the communication path forming unit 60 is opened. That is, the first flow path forming unit 40 and the second flow path forming unit 50 are communicated with each other.

  On the other hand, while the fuel cell vehicle 1000 is traveling, the traveling wind flows into the second flow path forming unit 50 as described above, so that the ram pressure valve 54 is opened by the ram pressure (FIG. 3B). . Therefore, the traveling wind passes through the auxiliary equipment radiator 30, circulates through the second flow path forming section 50, and exits from the second flow path forming section 50. At this time, due to the ram pressure, the valve portion 63 of the shut-off portion 62 rotates in the reverse direction with the shaft portion 64 as an axis, thereby closing the communication path forming portion 60 as shown in FIG.

  When the communication path forming part 60 is blocked, air does not flow from the second flow path forming part 50 to the first flow path forming part 40. That is, all of the outside air sucked by the fan 70 passes through the cooling condenser 20 and the fuel cell radiator 10 and is introduced into the first flow path forming section 40, so that the communication path forming section 60 causes the second air Compared with the case where the flow path forming part 50 and the first flow path forming part 40 communicate with each other, the amount of air introduced into the first flow path forming part 40 can be increased.

A3. Effects of the embodiment:
The effect of the cooling system 100A of the present embodiment will be described in comparison with a conventional cooling system. 6 and 7 are explanatory diagrams showing the configuration of a conventional cooling system 100P. The cooling system 100P is mounted on the fuel cell vehicle 1000 as in the first embodiment. FIG. 6 is a view of the fuel cell vehicle 1000 as viewed from above, and shows a part of the front side of the vehicle. FIG. 7 is a view of the fuel cell vehicle 1000 as viewed from the left side, and shows a part of the front side of the vehicle.

  The conventional cooling system 100 </ b> P includes a fuel cell radiator 10, a cooling condenser 20, an accessory radiator 30, a fan shroud 40 </ b> P, and a fan 70. Of the configuration of the conventional cooling system 100P, the same configuration as that of the first embodiment is denoted by the same reference numeral, and the description thereof is omitted. In the cooling system 100P, as shown in FIG. 6, the fuel cell radiator 10, the cooling condenser 20, and the auxiliary radiator 30 are arranged so as to overlap in the front-rear direction of the vehicle. As shown in FIG. 7, the radiators 30 for auxiliary machinery are smaller than the fuel cell radiator 10 and the cooling capacitor 20, and therefore do not all overlap, but in part, the fuel cell radiator 10 and the cooling capacitor 20, Auxiliary radiator 30 is overlapped. Therefore, in that portion, the outside air flowing into the fuel cell vehicle 1000 is warmed when passing through the auxiliary radiator 30, and is also warmed when passing through the cooling condenser 20. The heat radiation efficiency in the capacitor 20 and the fuel cell radiator 10 was lowered.

  On the other hand, in the cooling system 100A of the present embodiment, the auxiliary radiator 30 is arranged next to the fuel cell radiator 10 and the cooling condenser 20, so that it passes through the auxiliary radiator 30. There is no temperature rise of the air passing through the cooling capacitor 20 and the fuel cell radiator 10. Therefore, heat dissipation efficiency can be improved. Further, since the first flow path forming part 40 and the second flow path forming part 50 are communicated with each other by the communication path forming part 60, the traveling wind naturally forms a fuel cell, such as when the fuel cell vehicle 1000 is stopped. Even when the air does not flow into the car 1000, the outside air can be introduced into both the first flow path forming unit 40 and the second flow path forming unit 50 by one fan.

B. Second embodiment:
B1. Example configuration:
FIG. 4 is an explanatory diagram showing the configuration of the cooling system 100B of the present embodiment. As for the configuration of the cooling system 100B, only the parts different from the first embodiment will be described, and the same components as those in the first embodiment will be denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted. In the present embodiment, the cooling system 100B is mounted on the fuel cell vehicle 1000 as in the first embodiment.

  4, in addition to the configuration of the cooling system 100A, the cooling system 100B of the present embodiment further includes an auxiliary radiator 32, a third flow path forming unit 80, a communication path forming unit 90, and the like. . That is, the cooling system B of the present embodiment includes two radiators for auxiliary machinery. The radiator 32 for auxiliaries in this embodiment corresponds to the third heat exchanger in the claims, and the communication path forming portion 90 corresponds to the second communication path forming portion in the claims.

  The third flow path forming unit 80 is a resin-made hollow member, like the second flow path forming unit 50, and allows outside air flowing into the fuel cell vehicle 1000 to pass through the auxiliary radiator 32. To form a flow path for distribution. In the third flow path forming unit 80, as in the second flow path forming unit 50, the auxiliary equipment radiator 32 is disposed in the front, and a ram pressure valve 84 is provided at the rear end. The configuration of the ram pressure valve 84 is the same as that of the ram pressure valve 54 provided in the second flow path forming unit 50.

  The communication path forming part 90 is a resin member that forms a communication path that connects the first flow path forming part 40 and the third flow path forming part 80. As shown in FIG. 4, one end of the communication path forming portion 90 is connected between the fuel cell radiator 10 and the fan 70 in the first flow path forming portion 40, and the other end is connected to the third flow path. The auxiliary unit radiator 32 of the forming unit 80 and the ram pressure valve 84 are connected. The communication path forming unit 90 includes a blocking unit (not shown) that blocks communication between the first channel forming unit 40 and the third channel forming unit 80. The configuration of the blocking section provided in the communication path forming section 90 is the same as the blocking section 62 provided in the communication path forming section 60 in the first embodiment. In addition, the 1st flow path formation part 40, the 2nd flow path formation part 50, the communication path formation part 60, the 3rd flow path formation part 80, and the communication path formation part 90 are integrally formed.

B2. Example operation:
The flow of air in the cooling system 100B of the present embodiment will be described with reference to FIG. The movement of the ram pressure valve 84 included in the third flow path forming unit 80 is the same as that of the ram pressure valve 54 included in the second flow path forming unit 50 in the first embodiment. When the fuel cell vehicle 1000 is stopped or traveling at a low speed, the traveling wind does not flow into the second flow path forming unit 50 and the third flow path forming unit 80 as described above. The rear end of the second flow path forming section 50 is closed, and similarly, the rear end of the third flow path forming section 80 is closed by the ram pressure valve 84 (FIG. 4). In such a case, since the outside air is forcibly sucked into the vehicle by the fan 70, the outside air passes through the cooling condenser 20 and the fuel cell radiator 10 and flows through the first flow path forming unit 40. At the same time, it passes through the radiator for auxiliary machinery 30 and flows from the second flow passage forming portion 50 through the communication passage forming portion 60 to the first flow passage forming portion 40. 32, flows from the third flow path forming part 80 through the communication path forming part 90 and flows into the first flow path forming part 40. Then, the fan 70 exits the first flow path forming unit 40.

  At this time, due to the air flow sucked by the fan 70, the blocking portion provided in the communication path forming portion 90 moves in the same manner as the blocking portion 62 in the first embodiment, so that the second flow path forming portion 50 is provided. To the communication path forming part 90 is opened. That is, the first flow path forming unit 40 and the third flow path forming unit 80 are communicated with each other.

  On the other hand, while the fuel cell vehicle 1000 is traveling, the traveling wind flows into the second flow path forming unit 50 and the third flow path forming unit 80 as described above, so that the ram pressure valve 54, the ram pressure are increased by the ram pressure. The pressure valve 84 is open. Therefore, the traveling wind passes through the auxiliary equipment radiator 30, circulates through the second flow path forming section 50, and exits from the second flow path forming section 50. Similarly, the traveling wind passes through the auxiliary equipment radiator 32, flows through the third flow path forming unit 80, and exits from the third flow path forming unit 80. At this time, as in the first embodiment, the blocking part 62 blocks the communication path forming part 60 and the blocking part blocks the communication path forming part 90.

  When the communication path forming portions 60 and 90 are blocked, air does not flow into the first flow path forming portion 40 from the second flow path forming portion 50 and the communication path forming portion 90. That is, all of the outside air sucked by the fan 70 passes through the cooling condenser 20 and the fuel cell radiator 10 and is introduced into the first flow path forming section 40, so that the communication path forming section 60 causes the second air The amount of air passing through the cooling capacitor 20 and the fuel cell radiator 10 is increased as compared with the case where the flow path forming unit 50, the third flow path forming unit 80, and the first flow path forming unit 40 communicate with each other. Can be made.

B3. Effects of the embodiment:
The cooling system 100B according to the present embodiment includes the first flow path forming unit 40, the second flow path forming unit 50, and the third flow path forming unit 80. Further, the fuel cell radiator 10 and the cooling capacitor 20 are disposed in the first flow path forming portion 40, and the auxiliary radiator 30 is disposed in the second flow path forming portion 50 for the auxiliary equipment. Since the radiator 32 is disposed in the third flow path forming unit 80, the auxiliary radiators 30 and 32 are arranged side by side next to the fuel cell radiator 10 and the cooling condenser 20. Since the battery radiator 10, the cooling condenser 20, and the auxiliary radiators 30, 32 are not stacked, the cooling condenser 20, the fuel cell radiator 10, which passes through the auxiliary radiators 30, 32. There is no temperature rise of the air passing through. Therefore, the heat dissipation efficiency can be improved as in the first embodiment.

  Further, since the first flow path forming part 40 and the second flow path forming part 50, and the first flow path forming part 40 and the third flow path forming part 80 are communicated with each other, the fuel cell vehicle 1000 Even when traveling wind does not naturally flow into the fuel cell vehicle 1000, such as when the vehicle is stopped, the first flow path forming unit 40, the second flow path forming unit 50, and the third flow path forming are performed by one fan. Outside air can be introduced into all of the portions 80.

C. Third embodiment:
FIG. 5 is an explanatory diagram showing the configuration of the cooling system 100C of the present embodiment. As for the configuration of the cooling system 100C, only the parts different from the first embodiment will be described, and the same components as those in the first embodiment will be denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted. In the present embodiment, the cooling system 100C is mounted on the fuel cell vehicle 1000, as in the first embodiment.

  As shown in FIG. 5, the cooling system 100 </ b> C of the present embodiment is different from the cooling system 100 </ b> A of the first embodiment in that the fan 70 is more than the cooling condenser 20 in the first flow path forming unit 40. It is arranged on the front side, the communication path forming part 60 is connected to the first flow path forming part 40 between the fan 70 and the cooling condenser 20, and the second flow path forming part 50C The configuration is different.

  Similarly to the first embodiment, the second flow path forming portion 50C is a resin hollow member, and circulates outside air flowing into the fuel cell vehicle 1000 through the auxiliary radiator 30. The flow path for making it form is formed. However, the second flow path forming portion 50C in the present embodiment includes a ram pressure valve 54 that closes the front end of the cylindrical portion. And in the 2nd flow path formation part 50C, the radiator 30 for auxiliary machines is arrange | positioned back.

  In this embodiment, since the fan 70 is disposed in front of the cooling condenser 20 and the fuel cell radiator 10 in the first flow path forming unit 40, the fan 70 forces the outside air to 1 is pushed into the flow path forming section 40. When the front end of the second flow path forming unit 50 is blocked by the ram pressure valve 54, such as when the fuel cell vehicle 1000 is stopped, the first flow path forming unit 40 is forced by the fan 70. When pushed in, the pressure behind the fan 70 is high, so that outside air flows into the second flow path forming part 50 through the communication path forming part 60 and passes through the auxiliary radiator 30. Therefore, as in the first embodiment, the outside air can be introduced into both the first flow path forming section 40 and the second flow path forming section 50 by one fan, thereby suppressing an increase in cost. However, the heat dissipation efficiency can be improved.

D. Variations:
The present invention is not limited to the above-described examples and embodiments, and can be implemented in various modes without departing from the gist thereof. For example, the following modifications are possible.

  (1) In the first embodiment, the fuel cell radiator 10 and the cooling capacitor 20 are arranged in the first flow path forming section 40 so as to overlap with each other in the communication path forming section 60. Although what has arrange | positioned the radiator 30 was shown, arrangement | positioning of a heat exchanger is not limited to this arrangement | positioning. Further, the number of heat exchangers is not limited to the number of the above-described embodiments. In a cooling system including a plurality of heat exchangers, all the heat exchangers may be arranged in a plurality of blocks, rather than being arranged in an overlapping manner. In such a case, a flow path forming portion that covers each block is formed, and these flow path forming portions are communicated with each other via the communication path forming portion. Further, by providing a fan, the same effects as those of the above-described embodiment can be obtained.

  (2) In the second embodiment, the fuel cell radiator 10, the cooling capacitor 20, and the auxiliary radiators 30 and 32 are shown. For example, the same as the first embodiment. In addition, when the auxiliary equipment radiator 32 is not provided, the cooling condenser 20 may be disposed in the third flow path forming unit 80. In this way, one heat exchanger is arranged in each of the flow path forming units 40, 50, 80, and all the heat exchangers do not overlap. Therefore, from the first embodiment, Heat dissipation efficiency can be improved.

  (3) In the first embodiment, the communication path forming unit 60 includes the blocking unit 62, but the blocking unit 62 may be omitted. Even if it does in this way, compared with the conventional structure, heat dissipation efficiency can be raised, and it distribute | circulates air to both the 1st flow path formation part 40 and the 2nd flow path formation part 50 with one fan. be able to.

  (4) In the first embodiment, the ram pressure valve 54 opens the rear end of the tubular portion 52 by ram pressure, but is not limited to the one that is opened and closed by ram pressure. For example, when the vehicle speed is high, the rear end of the tubular portion 52 is opened, and when the vehicle speed is slow (or stopped), the opening / closing portion is controlled so as to close the rear end of the tubular portion 52. You may make it provide. Even if it does in this way, the effect similar to an above-mentioned Example can be acquired.

  (5) Moreover, in the said 1st Example, although the interruption | blocking part 62 showed what opens and closes the communicating path formation part 60 with the flow of the air in the 2nd flow-path formation part 50, according to a vehicle speed. It is also possible to control to open and close. When it is necessary to circulate the air in the second flow path forming part 50 by the fan 70, the first flow path forming part 40 and the second flow path forming part 50 are communicated with each other, which is not necessary. In some cases, the communication may be blocked.

  (6) In the first embodiment described above, the case where the cooling system 100A is mounted on the fuel cell vehicle 1000 has been exemplified. However, a vehicle including another power source such as a gasoline engine vehicle, a train, a ship, It may be mounted on various mobile objects such as airplanes. Even in the cooling system mounted on such a moving body, the same effect can be obtained.

  (7) In the third embodiment described above, the cooling system 100C having the configuration in which the fan 70 is disposed in front of the cooling capacitor 20 in the first flow path forming unit 40 is shown. 70 is disposed in front of the cooling capacitor 20 in the first flow path forming section 40, the configuration of the second flow path forming section and the arrangement of the communication path forming section 60 are, for example, You may make it show in FIG. FIG. 8 is an explanatory diagram illustrating a configuration of a cooling system 100D according to a modification of the third embodiment. The cooling system 100D of the modified example uses the second flow path forming unit 50 in the first example instead of the second flow path forming part 50C in the third example, and the communication path forming unit 60 is The fuel cell radiator 10 is connected to the first flow path forming unit 40 on the rear side. That is, the second flow path forming portion 50 includes a ram pressure valve 54 that closes the rear end of the tubular portion, and the auxiliary radiator 30 is disposed in front of the second flow path forming portion 50. Has been.

  In this way, since the fan 70 is disposed in front of the cooling condenser 20 and the fuel cell radiator 10 in the first flow path forming unit 40, the fan 70 forcibly supplies the outside air to the first flow path forming unit 40. 1 is pushed into the flow path forming portion 40. When the rear end of the second flow path forming unit 50 is closed by the ram pressure valve 54, such as when the fuel cell vehicle 1000 is stopped, the first flow path forming unit is forced by the fan 70. When pushed into 40, the rear side of the fuel cell radiator 10 in the first flow path forming section 40 becomes negative pressure, so that the outside air passes through the auxiliary radiator 30 and passes through the communication path forming section 60. Then, it flows into the first flow path forming unit 40. Therefore, as in the third embodiment, the outside air can be introduced into both the first flow path forming section 40 and the second flow path forming section 50 by a single fan. The same effect as the example can be obtained.

It is explanatory drawing which shows the structure of the cooling system 100A as a 1st Example of this invention. It is an enlarged view which expands and shows the X section in FIG. It is explanatory drawing which expands and shows the connection part vicinity of the 2nd flow-path formation part 50 and the communicating path formation part 60. FIG. It is explanatory drawing which shows the structure of the cooling system 100B as a 2nd Example. It is explanatory drawing which shows the structure of the cooling system 100C as a 3rd Example. It is explanatory drawing which shows the structure of the conventional cooling system 100P. It is explanatory drawing which shows the structure of the conventional cooling system 100P. It is explanatory drawing which shows the structure of the modification of a 3rd Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Fuel cell radiator 20 ... Cooling capacitor 30 ... Auxiliary radiators 32 ... Auxiliary radiators 40 ... Flow path forming part 40 ... First flow path forming part 40P ... Fan shroud 50, 50C ... Second Flow path forming part 52 ... Cylindrical part 54 ... Ram pressure valve 55 ... Valve part 56 ... Shaft part 60 ... Communication path forming part 62 ... Blocking part 63 ... Valve part 64 ... Shaft part 70 ... Fan 80 ... Third flow path formation Part 84 ... Ram pressure valve 90 ... Communication passage forming part 100A, 100B, 100C, 100D, 100P ... Cooling system 1000 ... Fuel cell vehicle 1020 ... Ventilation hole

Claims (8)

A cooling system for a moving body comprising at least a first heat exchanger and a second heat exchanger,
A first flow path forming section for flowing air flowing into the moving body through the first heat exchanger;
A second flow path forming section for flowing air flowing into the movable body through the second heat exchanger;
A fan that forcibly flows air outside the moving body into the first flow path forming unit;
A first communication path forming section that communicates the first flow path forming section and the second flow path forming section;
With
The second flow path forming part is
A first opening / closing portion for opening / closing the opening of the second flow path forming portion;
The first communication path forming part is
One end of the second flow path forming unit is connected between the second heat exchanger and the first opening / closing unit, and the other end of the first flow path forming unit is A cooling system, wherein the cooling system is connected to a downstream of a flow of air flowing through the first flow path forming unit rather than the first heat exchanger. The cooling system of claim 1, wherein
The fan is
In the first flow path forming part, the first flow path forming part is disposed downstream of the air flow rather than the place where the other end of the first communication path forming part is connected,
In the second flow path forming part,
The cooling system according to claim 1, wherein the second heat exchanger is arranged upstream of a flow of air flowing through the second flow path forming unit with respect to the first opening / closing unit. The cooling system according to claim 1 or 2,
The opening / closing part is
The cooling system according to claim 1, wherein the cooling system is a ram pressure valve that opens the second flow path forming portion by the pressure of air flowing into the second flow path forming portion from the outside of the moving body. The cooling system according to any one of claims 1 to 3,
The first communication path forming part is
A cooling unit comprising a blocking unit that blocks communication between the first channel forming unit and the second channel forming unit when the second channel forming unit is open. system. The cooling system according to any one of claims 1 to 4,
The moving body is
A fuel cell and auxiliary equipment for the fuel cell;
The first heat exchanger is a heat exchanger for the fuel cell;
The cooling system, wherein the second heat exchanger is a heat exchanger for the auxiliary machinery. The cooling system according to any one of claims 1 to 5,
Further comprising a third heat exchanger;
The cooling system, wherein the third heat exchanger is disposed in the first flow path forming unit. The cooling system according to claim 6.
The mobile body includes a cooling system,
The cooling system according to claim 3, wherein the third heat exchanger is a heat exchanger for the cooling system. The cooling system according to any one of claims 1 to 5,
A third heat exchanger;
A third flow path forming part for circulating the air flowing into the moving body through the third heat exchanger;
A second communication path forming section that communicates the first flow path forming section and the third flow path forming section;
Further comprising
The third flow path forming part is
A second opening / closing portion for opening / closing the opening of the third flow path forming portion;
In the third flow path forming part,
The second communication path forming part is
One end of the third flow path forming unit is connected between the third heat exchanger and the second opening / closing unit, and the other end of the first flow path forming unit is A cooling system, wherein the cooling system is connected to a downstream of a flow of air flowing through the first flow path forming unit rather than the first heat exchanger.

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