WO2020022104A1 - Système de refroidissement de véhicule - Google Patents

Système de refroidissement de véhicule Download PDF

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Publication number
WO2020022104A1
WO2020022104A1 PCT/JP2019/027653 JP2019027653W WO2020022104A1 WO 2020022104 A1 WO2020022104 A1 WO 2020022104A1 JP 2019027653 W JP2019027653 W JP 2019027653W WO 2020022104 A1 WO2020022104 A1 WO 2020022104A1
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WO
WIPO (PCT)
Prior art keywords
gas
cooling water
cooling system
tank
cooling
Prior art date
Application number
PCT/JP2019/027653
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English (en)
Japanese (ja)
Inventor
宮川　雅志
Original Assignee
株式会社デンソー
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Filing date
Publication date
Priority claimed from JP2019124395A external-priority patent/JP2020023965A/ja
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2020022104A1 publication Critical patent/WO2020022104A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00

Definitions

  • the present disclosure relates to a cooling system for a vehicle.
  • Vehicles are equipped with a cooling system for cooling heating elements such as engines and motors.
  • cooling water circulates between a heating element and a radiator that is a radiator, and the heating element is cooled by the cooling water.
  • a reserve tank capable of separating a gas component contained in the cooling water and temporarily storing excess cooling water when the volume of the cooling water expands due to a temperature rise is provided. Is provided.
  • a reserve tank for example, there is a reserve tank described in Patent Document 1 below.
  • cooling water is stored inside the tank body.
  • the inside of the tank body is divided into a plurality of liquid storage chambers by a plurality of partition walls. Adjacent storage chambers are connected to each other by a communication passage formed in the partition.
  • On one side surface of the tank body a tank inlet for flowing cooling water into the tank body is formed.
  • a tank outlet through which cooling water flows out from the inside of the tank main body is formed on the other side surface of the tank main body.
  • the length of the tank body in the width direction is set to a predetermined length or more, and It is necessary to set the length of the main body in the height direction to a predetermined length or more. This leads to an increase in the size of the reserve tank and, consequently, a deterioration in mountability of the cooling system.
  • An object of the present disclosure is to provide a vehicle cooling system capable of improving mountability.
  • a vehicle cooling system includes a cooling system, a gas-liquid separation unit, and a tank unit.
  • cooling water pumped by a pump circulates between the heating element and the heat exchanger, and the cooling element absorbs the heat of the heating element, thereby cooling the heating element and cooling the heat exchanger.
  • the cooling water is radiated.
  • the gas-liquid separator receives the cooling water circulating through the cooling system and separates gas components contained in the flowing cooling water.
  • the tank unit is provided separately from the gas-liquid separation unit, and the cooling water and the gas component separated in the gas-liquid separation unit are stored by flowing through individual flow paths, and the stored cooling water is returned to the cooling system. In addition, it is possible to temporarily store the excess cooling water increased by the volume expansion of the cooling water in the cooling system.
  • the size of the gas-liquid separation unit can be reduced to the minimum size that can ensure the gas-liquid separation function. Further, the size of the tank portion can be reduced to a minimum size capable of ensuring the volume expansion absorbing function.
  • the gas-liquid separation unit and the tank unit having the above configuration can be downsized, as compared with the reserve tank that has both the gas-liquid separation function and the volume expansion absorption function. Can be smaller. Therefore, the mountability of the cooling system can be improved.
  • FIG. 1 is a block diagram illustrating a schematic configuration of a vehicle cooling system according to the first embodiment.
  • FIG. 2 is a cross-sectional view illustrating a cross-sectional structure of the gas-liquid separation unit according to the first embodiment.
  • FIG. 3 is a cross-sectional view showing a cross-sectional structure along the line II-II in FIG.
  • FIG. 4 is a diagram schematically illustrating a positional relationship between the gas-liquid separation unit and the tank unit according to the first embodiment.
  • FIG. 5 is a block diagram illustrating a schematic configuration of a vehicle cooling system according to the second embodiment.
  • FIG. 6 is a block diagram illustrating a schematic configuration of a gas-liquid separation unit and a tank unit according to the third embodiment.
  • FIG. 7 is a diagram illustrating a schematic configuration of a tank unit according to the fourth embodiment.
  • FIG. 8 is a diagram illustrating a schematic configuration of a gas-liquid separation unit and a heat exchanger tank housing according to a fifth embodiment.
  • FIG. 9 is a block diagram illustrating a schematic configuration of a vehicle cooling system according to another embodiment.
  • FIG. 10 is a side view illustrating a side structure of a gas-liquid separation unit according to another embodiment.
  • FIG. 11 is a cross-sectional view showing a cross-sectional structure along the line XI-XI in FIG.
  • the cooling system 10 of the first embodiment shown in FIG. 1 is for cooling the heating elements 21 and 31 mounted on a vehicle.
  • a motor generator, an inverter, a battery, a heat pump for air conditioning, and the like easily generate heat.
  • a cooling system for cooling a motor generator, an inverter, and the like is additionally required in addition to a cooling system for cooling the engine.
  • the cooling system 10 according to the present embodiment is used for cooling the heating elements 21 and 31 by using equipment such as a motor generator and an inverter as the heating elements 21 and 31.
  • the cooling system 10 includes a first cooling system 20 for cooling the heating element 21 and a second cooling system 30 for cooling the heating element 31.
  • first cooling system 20 cooling water pumped by a pump 23 circulates between the heating element 21 and the heat exchanger 22.
  • the cooling water flowing inside absorbs the heat of the heating element 21.
  • the heating element 21 is cooled.
  • the cooling water that has reached a temperature state by absorbing the heat of the heating element 21 flows into the heat exchanger 22.
  • heat exchanger 22 heat is exchanged between the cooling water flowing inside the heat exchanger 22 and the air flowing outside the heat exchanger 22 to radiate the cooling water.
  • the cooling water cooled in the heat exchanger 22 flows into the pump 23.
  • the pump 23 is a mechanical pump driven by the power of an engine or an electric pump driven based on supply of electric power from a battery. The pump 23 pumps the cooling water to the heating element 21.
  • the second cooling system 30 includes a heat exchanger 32 and a pump 33 as in the first cooling system 20.
  • the configuration of the second cooling system 30 has the same or similar configuration as that of the first cooling system 20 except that the cooling target is the heating element 31, and thus a detailed description thereof is omitted.
  • the cooling system 10 separates the gas component contained in the cooling water circulating through the second cooling system 30 from the gas-liquid separation unit 24 that separates the gas component contained in the cooling water circulating through the first cooling system 20.
  • a gas-liquid separation unit 34 is further provided.
  • the cooling system 10 of the present embodiment further includes a tank section 40 for temporarily storing the cooling water and gas components separated by the gas-liquid separation sections 24 and 34. In the tank section 40, it is possible to temporarily store excess cooling water increased by the volume expansion of the cooling water of the cooling systems 20, 30.
  • the structures of the gas-liquid separation units 24 and 34 and the tank unit 40 will be specifically described.
  • a part of the cooling water flowing out of the heating element 21 and a part of the cooling water flowing into the heat exchanger 22 flow into the gas-liquid separation unit 24.
  • the gas-liquid separation unit 24 separates a gas component contained in the cooling water by generating a swirling flow in the flowing cooling water.
  • the gas-liquid separation unit 24 is configured as shown in FIG.
  • the gas-liquid separation unit 24 includes a tank main body 50 and a flow path forming plate 60 housed inside the tank main body 50.
  • the direction indicated by an arrow Z1 indicates a vertically upward direction
  • the direction indicated by an arrow Z2 indicates a vertically downward direction.
  • the tank main body 50 is formed in a cylindrical shape around the axis m1.
  • the tank body 50 is divided into an upper tank portion 51 and a lower tank portion 52 in a direction along the axis m1.
  • the tank main body 50 is configured by joining an upper tank part 51 and a lower tank part 52 together.
  • the tank main body 50 is formed of a resin material or the like. If a resin material such as polypropylene having permeability is used as the material of the tank body 50, the water level of the cooling water inside the tank body 50 can be visually checked.
  • An inflow pipe 70 for allowing cooling water flowing from the heating element 21 and the heat exchanger 22 to flow into the tank body 50 is attached to the outer wall 520 of the lower tank 52. Inside the lower tank part 52, a flow path forming plate 60 is accommodated. The channel forming plate 60 is fixed to the tank body 50 by sandwiching the outer peripheral portion between the bottom wall portion 521 of the lower tank portion 52 and the upper tank portion 51. As shown in FIG. 3, an annular gap is formed between the outer wall of the flow path forming plate 60 and the inner wall of the lower tank 52. This gap forms an outer peripheral channel FP3 into which the cooling water flows from the inflow pipe 70.
  • the channel forming plate 60 includes an upper plate 61 and a lower plate 62.
  • the upper plate 61 is formed in a column shape around the axis m1.
  • a cylindrical portion 610 formed in a cylindrical shape with the axis m1 as a central axis is provided.
  • concave grooves 611 and 612 for forming two independent flow paths FP1 and FP2 are formed inside the upper plate 61.
  • the concave grooves 611 and 612 are formed so as to be bent in an arc shape from the radial outside centered on the axis m1 toward the center of the upper plate 61.
  • the concave grooves 611 and 612 join at a joining portion 613 formed of a space formed in a central portion of the upper plate 61.
  • the junction 613 is communicated from one end of the cylindrical portion 610 to the inside of the cylindrical portion 610.
  • the concave grooves 611 and 612 are formed such that their widths become smaller from the outside of the junction 613 toward the junction 613 in the radial direction around the axis m1.
  • an inflow port 614 for letting the cooling water flowing through the outer flow path FP3 flow into the first flow path FP1, and the second cooling water flowing through the outer flow path FP3 are provided on the outer peripheral surface of the upper plate 61 of the flow path forming plate 60.
  • An inflow port 615 for flowing into the flow path FP2 is formed.
  • the inflow port 614 and the inflow port 615 are arranged point-symmetrically about the junction 613.
  • the lower plate 62 is assembled to the bottom surface of the upper plate 61.
  • the lower plate 62 closes the respective openings of the concave grooves 611 and 612 and the junction 613 formed in the upper plate 61.
  • the space surrounded by the lower plate 62 and the concave groove 611 of the upper plate 61 constitutes a first flow path FP1.
  • the space surrounded by the lower plate 62 and the concave groove 612 of the upper plate 61 constitutes a second flow path FP2.
  • the upper tank section 51 forms a gas-liquid separation chamber R1 together with the upper plate 61 of the flow path forming plate 60.
  • the gas-liquid separation chamber R1 is a part for separating gas components contained in the cooling water.
  • the symbol R10 in the figure indicates a gas layer in which gas mainly exists in the gas-liquid separation chamber R1, and the symbol R11 in the figure indicates a liquid layer in which cooling water mainly exists in the gas-liquid separation chamber R1.
  • the gas-liquid separation chamber R1 is formed as a space defined by the inner wall surface of the upper tank portion 51 and the upper surface of the flow path forming plate 60. Inside the gas-liquid separation chamber R1, the cylindrical portion 610 of the flow path forming plate 60 is arranged so as to extend.
  • An outflow pipe 71 for allowing the cooling water stored in the liquid layer R11 of the gas-liquid separation chamber R1 to flow out to the tank section 40 is attached to the outer wall section 510 of the upper tank section 51.
  • the outflow pipe 71 has its internal flow path located below the liquid level LS of the cooling water stored in the gas-liquid separation chamber R1 and its internal flow path located below the tip of the cylindrical portion 610. It is arranged to be.
  • An outflow pipe 72 for allowing gas components stored in the gas layer R10 of the gas-liquid separation chamber R1 to flow out to the tank unit 40 is attached to the upper wall portion 511 of the upper tank portion 51.
  • the cooling water flowing from the inflow pipe 70 flows into the first flow path FP1 and the second flow path FP2 through the flow ports 614 and 615 of the flow path forming plate 60, respectively.
  • the cooling water flowing into the first flow path FP1 and the second flow path FP2 respectively flows while turning from the outside to the inside of the flow path forming plate 60 along the first flow path FP1 and the second flow path FP2.
  • a flow direction B1 of the cooling water flowing from the first flow path FP1 to the junction 613, and a flow direction B2 of the cooling water flowing from the second flow path FP2 to the junction 613. Are facing each other.
  • the cooling water having the opposite flow directions flows into the junction 613, so that a swirling flow can be generated in the cooling water at the junction 613.
  • the swirling cooling water flows upward while swirling inside the cylindrical portion 610 as indicated by an arrow B3 in FIG. 2, and is discharged from the distal end portion of the cylindrical portion 610 to the gas-liquid separation chamber R1. .
  • a vortex of the cooling water is formed in the gas-liquid separation chamber R1.
  • the gas component contained in the cooling water gathers near the center of the gas-liquid separation chamber R1.
  • the gas components collected near the center of the gas-liquid separation chamber R1 are stored above the gas-liquid separation chamber R1.
  • a gas layer R10 is formed above the gas-liquid separation chamber R1, and a liquid layer R11 is formed below the gas layer R10.
  • the cooling water stored in the liquid layer R11 flows out to the tank unit 40 through the outflow pipe 71.
  • the gas component stored in the gas layer R10 flows out to the tank unit 40 through the outflow pipe 72.
  • the gas-liquid separation unit 34 shown in FIG. 1 has the same structure as the gas-liquid separation unit 24, and thus a detailed description is omitted.
  • the tank section 40 is provided with inlets 41 to 44 and outlets 45 and 46. If a resin material such as polypropylene having permeability is used as the material of the tank section 40, the water level of the cooling water inside the tank section 40 can be visually checked.
  • the inflow port 41 is connected to the outflow pipe 71 of one of the gas-liquid separation units 24 via the liquid flow path W10.
  • the inflow port 42 is connected to the outflow pipe 72 of one of the gas-liquid separation units 24 via the gas flow path W11. Therefore, the cooling water and the gas component separated in the one gas-liquid separation unit 24 flow into the inside of the tank unit 40 through the inflow port 41 and the inflow port 42.
  • the inflow port 43 is connected to the outflow pipe 71 of the other gas-liquid separation unit 34 via the liquid flow path W10.
  • the inflow port 44 is connected to the outflow pipe 72 of the other gas-liquid separation unit 34 via the gas flow path W11. Therefore, the cooling water and the gas component separated in the other gas-liquid separation unit 34 flow into the tank 40 through the inlet 43 and the inlet 44.
  • the tank 40 temporarily stores the cooling water and gas components flowing from the gas-liquid separators 24 and 34 through the respective inlets 41 to 44.
  • symbol R20 in a figure shows the gas layer in which gas mainly exists in the tank part 40
  • symbol R21 in the figure shows the liquid layer in which cooling water mainly exists in the tank part 40. ing.
  • the cooling water stored in the tank section 40 is returned from the outlet 45 to the heat exchanger 22 of the first cooling system 20 through the liquid flow path W12, and from the outlet 46 of the second cooling system 30 through the liquid flow path W22. The heat is returned to the heat exchanger 32.
  • a water inlet 47 capable of supplying cooling water to the inside of the tank portion 40 is provided in an upper wall portion of the tank portion 40.
  • the cooling water supplied from the water inlet 47 into the tank 40 is supplied to the cooling systems 20 and 30 through the outlets 45 and 46. Therefore, by supplying the cooling water from the water inlet 47 to the inside of the tank section 40, it is possible to substantially adjust the amount of the cooling water flowing through each of the cooling systems 20, 30.
  • a pressure cap 48 is attached to the water inlet 47.
  • the pressure cap 48 enables pressure management of each of the cooling systems 20 and 30 including the inside of the tank unit 40.
  • the lower limit liquid level L10 of the liquid level of the gas-liquid separation unit 24 is positioned vertically above the lower limit liquid level L20 of the tank unit 40. It is desirable that they are arranged so as to have a positional relationship.
  • FIG. 4 shows that the lower limit liquid level L10 of the liquid level of the gas-liquid separation unit 24 is vertically higher than the outflow pipe 71 and vertically higher than the tip of the cylindrical portion 610. It is set to position L10.
  • the lower limit liquid level L10 of the gas-liquid separator 24 indicates the lower limit position of the coolant level at which the gas-liquid separator 24 can secure the gas-liquid separation function, and is set in advance.
  • the lower limit liquid level L20 of the liquid level of the tank section 40 is vertically above the outlets 45 and 46, and excess cooling water generated due to volume expansion of the cooling water of the cooling systems 20 and 30 is provided. For example, it is set at a position L20 shown in FIG. 4 so that it can be temporarily stored.
  • the lower limit liquid level L20 of the tank portion 40 indicates the lower limit position of the coolant level at which the volume expansion absorbing function can be secured in the tank portion 40, and is set in advance.
  • the water level of the gas-liquid separator 24 is temporarily reduced to the lower limit liquid level L10. Even when the water level of the tank 40 has dropped to the lower limit liquid level L20, the cooling water can flow from the gas-liquid separator 24 to the tank 40. The same applies to the positional relationship between the gas-liquid separation unit 34 and the tank unit 40.
  • the heating element 21 needs to be cooled, but the heating element 31 may not need to be cooled.
  • the cooling water circulates only in the first cooling system 20.
  • the respective cooling systems 20 and 30 are connected in the tank section 40, when the cooling water is circulating only in the first cooling system 20, the heat of the second cooling system 30 There is a possibility that the cooling water in the exchanger 32 flows back into the tank section 40 via the liquid flow path W22 and flows into the first cooling system 20.
  • the second cooling system 30 thermally interferes with the first cooling system 20.
  • the cooling from the heat exchanger 22 to the tank unit 40 is performed in the liquid passage W12 connecting the outlet 45 of the tank unit 40 and the heat exchanger 22 of the first cooling system 20.
  • a check valve 80 for suppressing backflow of water is provided.
  • the liquid flow path W22 connecting the outlet 45 of the tank unit 40 and the heat exchanger 32 of the second cooling system 30 also suppresses the backflow of the cooling water from the heat exchanger 32 to the tank unit 40.
  • a check valve 81 is provided for performing the operation.
  • the following functions and effects (1) to (5) can be obtained.
  • the size of the gas-liquid separation units 24 and 34 must be reduced to the minimum size that can ensure the gas-liquid separation function. Can be.
  • the tank section 40 can be reduced in size to the minimum dimension that can ensure the volume expansion absorbing function.
  • the gas-liquid separation units 24 and 34 and the tank unit 40 of the present embodiment can be downsized compared to the reserve tank having both the gas-liquid separation function and the volume expansion function. Space can be reduced. Therefore, the mountability of the cooling system 10 can be improved.
  • the cooling system 10 includes a plurality of cooling systems 20 and 30.
  • the gas-liquid separation units 24 and 34 are individually provided for the plurality of cooling systems 20 and 30.
  • the cooling water and gas components separated in each of the plurality of gas-liquid separation units 24 and 34 flow into the tank unit 40 and are stored. According to such a configuration, since the tank unit 40 can be shared by the plurality of cooling systems 20 and 30, the tank unit is compared with the case where the tank unit is provided for each of the plurality of cooling systems 20 and 30. Can be reduced. Therefore, the installation space of the tank unit can be reduced, and the mountability of the cooling system 10 can be further improved.
  • the gas-liquid separation units 24 and 34 separate the cooling water and the gas component by generating a swirling flow in the cooling water flowing from the cooling systems 20 and 30. By using such gas-liquid separation units 24 and 34, it is possible to easily realize a configuration that is small but capable of gas-liquid separation.
  • the lower limit liquid level L10 of the liquid surfaces of the gas-liquid separation units 24 and 34 is positioned vertically above the lower limit liquid surface L20 of the liquid surface of the tank unit 40. It is arranged so that it may be in a positional relationship.
  • the tank units 40 and 34 It is possible to supply cooling water to the water.
  • the partition wall 90 includes a communication hole 91 for communicating the gas layer R10 of the gas-liquid separation unit 24 with the gas layer R20 of the tank unit 40, and the liquid layer R11 of the gas-liquid separation unit 24 and the liquid layer R21 of the tank unit 40.
  • a communication hole 92 for communication is provided. That is, the gas component stored in the gas layer R10 of the gas-liquid separation unit 24 flows into the gas layer R20 of the tank unit 40 through the communication hole 91 of the partition wall 90.
  • the cooling water stored in the liquid layer R11 of the gas-liquid separation unit 24 flows into the liquid layer R21 of the tank unit 40 through the communication hole 92 of the partition wall 90.
  • the operation and effect shown in the following (6) can be further obtained.
  • the gas-liquid separation unit 24 and the tank unit 40 are arranged adjacent to each other. According to such a configuration, the installation space for the gas-liquid separation unit 24 and the tank unit 40 can be reduced, so that the mountability can be further improved.
  • partition walls 49a and 49b are provided inside the tank unit 40.
  • the partition walls 49a and 49b are formed so as to extend upward from the bottom surface of the tank unit 40, and are arranged at predetermined intervals in the width direction of the tank unit 40.
  • the gap between the partition walls 49a and 49b forms a gas layer.
  • the partition walls 49a and 49b divide the internal space of the tank section 40 into storage chambers R30 and R31.
  • the storage chamber R30 is a part that stores the cooling water flowing from the gas-liquid separation unit 24 into the inside of the tank unit 40 through the liquid flow path W10.
  • the storage chamber R31 is a part for storing the cooling water flowing from the gas-liquid separation unit 34 into the inside of the tank unit 40 through the liquid flow path W20.
  • the storage room R30 and the storage room R31 communicate with each other above the inside of the tank unit 40.
  • the space above each of the storage chamber R30 and the storage chamber R31 includes a gas component flowing into the tank unit 40 from the gas-liquid separation unit 24 through the gas flow path W11 and a tank flowing from the gas-liquid separation unit 34 through the gas flow path W21. It is a portion where the gas component flowing into the inside of the section 40 is stored.
  • the functions and effects shown in the following (7) and (8) can be further obtained.
  • the cooling water separated in the gas-liquid separation units 24 and 34 flows into the storage chambers R30 and R31 formed inside the tank unit 40 by the partition walls 49a and 49b, respectively. According to such a configuration, it is possible to suppress thermal interference between the cooling systems 20 and 30 that occurs when the cooling water flowing through each of the cooling systems 20 and 30 is mixed. Therefore, it is possible to avoid a situation in which the cooling function is reduced in one or both of the cooling systems 20, 30.
  • the air layer functions as a heat insulating structure, so that the heat between the cooling systems 20 and 30 is generated. Interference can be more accurately suppressed. Therefore, a situation where the cooling function is reduced in one or both of the cooling systems 20 and 30 can be more accurately avoided.
  • the outer wall 400 of the tank 40 has a double structure including the inner outer wall 401 and the outer outer wall 402.
  • An air space S is formed between the inner outer wall 401 and the outer outer wall 402. Due to the air layer S, heat input from the outside to the inside of the tank unit 40 is suppressed. That is, in the present embodiment, the inner outer wall portion 401 and the outer outer wall portion 402 function as a heat insulating structure.
  • the outer wall section 400 of the tank section 40 is provided with a heat insulating structure for suppressing heat input from the outside to the inside. According to such a configuration, since it is difficult for heat to be transmitted from the outside of the tank unit 40 to the inside, it is possible to avoid a situation in which the temperature of the cooling water inside the tank unit 40 rises due to the heat outside the tank unit 40. can do. That is, it is possible to avoid thermal interference from outside the tank section 40 to the cooling systems 20 and 30. Therefore, a decrease in the cooling function in each of the cooling systems 20 and 30 can be avoided.
  • the gas-liquid separation unit 24 is integrated with the housing 221 of the tank 220 of the heat exchanger 22. Specifically, the outer wall portion 510 of the upper tank portion 51 and the outer wall portion 520 of the lower tank portion 52 of the gas-liquid separator 24 are integrally assembled to the housing 221 of the tank 220 of the heat exchanger 22.
  • the high-temperature cooling water flowing out of the heating element 21 flows into the housing 221 of the tank 220 of the heat exchanger 22.
  • the tank 220 distributes the flowing cooling water to a plurality of tubes (not shown) provided in the heat exchanger 22.
  • heat exchanger 22 heat exchange is performed between the cooling water flowing inside the tube and the air flowing outside the tube, so that the heat of the cooling water is released to the air and the cooling water is cooled. .
  • an inlet 74 is formed in the bottom wall 521 of the gas-liquid separator 24. Cooling water flowing inside the housing 221 of the tank 220 is introduced into the gas-liquid separation unit 24 through the inflow port 74. The cooling water introduced into the gas-liquid separation unit 24 through the inflow port 74 is introduced into the flow path forming plate 60, and is discharged into the gas-liquid separation chamber R1 as a swirling flow. Thereby, the gas component contained in the cooling water is separated in the gas-liquid separation chamber R1.
  • the operation and effect shown in the following (10) can be further obtained.
  • the outer walls 510 and 520 of the gas-liquid separator 24 are integrally assembled to the housing 221 of the tank 220 of the heat exchanger 22. According to such a configuration, it is not necessary to secure an installation space for the gas-liquid separation unit 24 separately from an installation space for the heat exchanger 22, so that the mountability can be further improved.
  • each embodiment can also be implemented in the following forms.
  • the outer wall portions 510 and 520 of the gas-liquid separation unit 24 are integrally assembled with the housing of the pump 23 instead of the housing 221 of the tank 220 of the heat exchanger 22. Good. With such a configuration, it is not necessary to secure an installation space for the gas-liquid separation unit 24 separately from the installation space for the pump 23, so that the mountability can be further improved.
  • the outer wall portion 400 of the tank portion 40 may be integrated with the housing of the pump 23. With such a configuration, it is not necessary to secure an installation space for the tank unit 40 separately from an installation space for the pump 23, so that the mountability can be further improved.
  • the cooling system 10 of each embodiment may be the structure which does not have the 2nd cooling system 30. That is, the cooling system 10 can be configured by only the first cooling system 20, the gas-liquid separation unit 24, and the tank unit 40. -The cooling system 10 of each embodiment is not limited to two cooling systems, and may be configured by three or more cooling systems.
  • the gas-liquid separation section is not limited to the part into which the cooling water circulating through the cooling system flows, but may be the one into which all the cooling water flowing through the cooling system flows.
  • a gas-liquid separation unit for example, there is a gas-liquid separation unit 24 of the cooling system 10 shown in FIG.
  • the cooling system 10 shown in FIG. 9 includes a cooling system 20 for cooling the heating element 21.
  • the cooling water pumped by the pump 23 flows back to the pump 23 after flowing in the order of the heat exchanger 22, the heating element 21, the gas-liquid separator 24, the tank 40, and the check valve 80. Circulate like so.
  • the heating element 31 used in the cooling system 20 includes, for example, an electric motor as a power source mounted on an electric vehicle, a battery for supplying electric power to the electric motor, an inverter device for driving the electric motor, and the like.
  • a radiator is used as the heat exchanger 22 .
  • the flow rate of the cooling water is smaller than that of the cooling system for cooling the engine, even a configuration in which all the cooling water flowing through the cooling system 20 flows into the gas-liquid separation unit 24 is used. In addition, it is possible to accurately separate gas components contained in the cooling water.
  • the structure of the gas-liquid separation unit 24 is not limited to the structure shown in FIGS. 2 and 3, but may be any structure.
  • the gas-liquid separator 24 may have a structure as shown in FIGS.
  • a projection 53 is formed inside the tank main body 50 so as to extend vertically upward Z1 along the axis m1 from the inner surface of the bottom wall 50b.
  • An inflow pipe 70 is formed on the side wall 50a of the tank body 50 so as to protrude from the outer surface thereof. The inflow pipe 70 is disposed vertically below the tip end of the protruding portion 53 in a direction Z2.
  • An outflow pipe 71 is formed on the bottom wall 50b of the tank body 50 so as to protrude from the outer surface thereof.
  • the cooling water flowing into the tank main body 50 from the inflow pipe 70 flows along the inner peripheral surface of the side wall 50a of the tank main body 50 as indicated by an arrow in FIG. Then, a swirling flow is formed in the cooling water.
  • a swirling flow is more easily formed in the cooling water.
  • a vortex of the cooling water is formed inside the tank body 50, and the gas component contained in the cooling water is separated by the centrifugal force.
  • liquid cooling water collects at the lower part of the tank body 50 and gas components contained in the cooling water collect at the upper part of the tank body 50.
  • the cooling water collected at the lower part of the tank body 50 is discharged outside through the outflow pipe 71.
  • the present disclosure is not limited to the above specific examples.
  • the above-described specific examples in which a person skilled in the art makes appropriate design changes are also included in the scope of the present disclosure as long as they have the features of the present disclosure.
  • the components included in each of the specific examples described above, and their arrangement, conditions, shapes, and the like are not limited to those illustrated, but can be appropriately changed.
  • the elements included in each of the specific examples described above can be appropriately changed in combination as long as no technical inconsistency occurs.

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Abstract

Système de refroidissement de véhicule (10) comprenant : un système de refroidissement (20); une unité de séparation gaz-liquide (24); et une partie réservoir (40). L'eau de refroidissement circulant à travers le système de refroidissement s'écoule dans l'unité de séparation gaz-liquide et les composants gazeux contenus dans l'eau de refroidissement en circulation sont séparés. La partie réservoir est disposée séparément de l'unité de séparation gaz-liquide. L'eau de refroidissement et les composants gazeux séparés dans l'unité de séparation gaz-liquide circulent dans des trajets d'écoulement individuels (W10, W11) et sont stockés. L'eau de refroidissement stockée peut être renvoyée au système de refroidissement, et l'eau de refroidissement en excès, qui est l'eau de refroidissement qui augmente en raison de l'expansion de volume de l'eau de refroidissement dans le système de refroidissement, peut également être stockée temporairement.
PCT/JP2019/027653 2018-07-25 2019-07-12 Système de refroidissement de véhicule WO2020022104A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2018139602 2018-07-25
JP2018-139602 2018-07-25
JP2019-124395 2019-07-03
JP2019124395A JP2020023965A (ja) 2018-07-25 2019-07-03 車両の冷却システム

Publications (1)

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WO2020022104A1 true WO2020022104A1 (fr) 2020-01-30

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4730223U (fr) * 1971-04-22 1972-12-06
JPS57144218U (fr) * 1981-03-06 1982-09-10
JPH03111618A (ja) * 1989-09-26 1991-05-13 Nippon Soken Inc 内燃機関の冷却装置
EP0561673A1 (fr) * 1992-03-16 1993-09-22 Automobiles Peugeot Circuit de liquide pour échangeur de chaleur associé à un moteur de véhicule automobile
JP2004317044A (ja) * 2003-04-17 2004-11-11 Toyota Motor Corp 蓄熱タンク
JP2006336575A (ja) * 2005-06-03 2006-12-14 Nissan Motor Co Ltd ラジエータ
US20080190385A1 (en) * 2005-01-31 2008-08-14 Behr Gmbh & Co. Kg Cooling Agent Compensation Tank For A Cooling Circuit
WO2014034062A1 (fr) * 2012-08-28 2014-03-06 株式会社デンソー Système de gestion thermique pour véhicule
JP2015028336A (ja) * 2013-06-24 2015-02-12 トヨタ車体株式会社 エンジン冷却水のリザーバタンク
CN108104939A (zh) * 2017-12-22 2018-06-01 江健良 一种水泡隔离筒及使用该水泡隔离筒的臌胀水箱
DE102017011428A1 (de) * 2016-12-21 2018-06-21 Scania Cv Ab Kühlsystem, das zwei Kühlkreise und ein gemeinsames Ausgleichsgefäß umfasst

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4730223U (fr) * 1971-04-22 1972-12-06
JPS57144218U (fr) * 1981-03-06 1982-09-10
JPH03111618A (ja) * 1989-09-26 1991-05-13 Nippon Soken Inc 内燃機関の冷却装置
EP0561673A1 (fr) * 1992-03-16 1993-09-22 Automobiles Peugeot Circuit de liquide pour échangeur de chaleur associé à un moteur de véhicule automobile
JP2004317044A (ja) * 2003-04-17 2004-11-11 Toyota Motor Corp 蓄熱タンク
US20080190385A1 (en) * 2005-01-31 2008-08-14 Behr Gmbh & Co. Kg Cooling Agent Compensation Tank For A Cooling Circuit
JP2006336575A (ja) * 2005-06-03 2006-12-14 Nissan Motor Co Ltd ラジエータ
WO2014034062A1 (fr) * 2012-08-28 2014-03-06 株式会社デンソー Système de gestion thermique pour véhicule
JP2015028336A (ja) * 2013-06-24 2015-02-12 トヨタ車体株式会社 エンジン冷却水のリザーバタンク
DE102017011428A1 (de) * 2016-12-21 2018-06-21 Scania Cv Ab Kühlsystem, das zwei Kühlkreise und ein gemeinsames Ausgleichsgefäß umfasst
CN108104939A (zh) * 2017-12-22 2018-06-01 江健良 一种水泡隔离筒及使用该水泡隔离筒的臌胀水箱

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