WO2022168534A1 - Tubing for vehicle cooling circuit and cooling circuit using same - Google Patents

Tubing for vehicle cooling circuit and cooling circuit using same Download PDF

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Publication number
WO2022168534A1
WO2022168534A1 PCT/JP2022/000538 JP2022000538W WO2022168534A1 WO 2022168534 A1 WO2022168534 A1 WO 2022168534A1 JP 2022000538 W JP2022000538 W JP 2022000538W WO 2022168534 A1 WO2022168534 A1 WO 2022168534A1
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Prior art keywords
cooling circuit
vehicle
circuit pipe
pipe
outer edge
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PCT/JP2022/000538
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French (fr)
Japanese (ja)
Inventor
浩 須田
大輔 塚本
晋 三上
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日本サーモスタット株式会社
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Publication of WO2022168534A1 publication Critical patent/WO2022168534A1/en

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    • 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
    • F01P11/04—Arrangements of liquid pipes or hoses
    • 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
    • F01P3/00—Liquid cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/22—Multi-channel hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
    • F16L9/19—Multi-channel pipes or pipe assemblies

Definitions

  • the present invention relates to a vehicle cooling circuit pipe used in a vehicle cooling circuit, and a cooling circuit using the same.
  • a cooling circuit in which a cooling medium for cooling an internal combustion engine in a vehicle circulates (for example, see Japanese Patent Application Laid-Open No. 2011-185267).
  • the cooling circuit is also provided with other heat exchanging parts such as a heater core that utilizes the heat of the coolant warmed by cooling the internal combustion engine.
  • a single pipe used in a conventional cooling circuit forms a flow path through which a cooling medium flows.
  • a hybrid vehicle includes a plurality of devices with different optimum temperatures, such as an internal combustion engine (engine), a motor, and a battery. The same applies to electric vehicles and fuel cell vehicles, and in hybrid vehicles, electric vehicles, and fuel cell vehicles, the layout of the cooling circuit in the vehicle tends to be particularly complicated.
  • a vehicle cooling circuit pipe for example, an embodiment The cooling circuit pipe 2 of the vehicle in the form of the following (same below), A cylindrical outer edge (for example, the outer edge 20 of the embodiment; the same applies hereinafter); A partition portion (for example, the partition portion 21 of the embodiment; the same shall apply hereinafter) that separates the inside of the outer edge portion into a plurality of passages (for example, the first passage 23 and the second flow passage 25 of the embodiment; the same shall apply hereinafter).
  • a cylindrical outer edge for example, the outer edge 20 of the embodiment; the same applies hereinafter
  • a partition portion for example, the partition portion 21 of the embodiment; the same shall apply hereinafter
  • the partition may be provided with a partition hollow portion (for example, the partition hollow portion 21a of the embodiment; hereinafter the same).
  • the partition hollow portion can prevent or suppress heat exchange between the cooling medium flowing through the plurality of flow paths via the partition portion.
  • the outer edge portion may be provided with an outer edge hollow portion (for example, an outer edge hollow portion 20a in the embodiment; the same shall apply hereinafter). According to this configuration, the outer edge portion can prevent or suppress heat exchange between the cooling medium flowing in the cooling circuit pipe of the vehicle and the outside air.
  • a heat storage member may be enclosed in the outer hollow portion. By doing so, heat is stored in the outer peripheral hollow portion, and early warm-up and heating performance of the internal combustion engine can be improved.
  • the cooling circuit piping of the vehicle may be made of synthetic resin. By doing so, the handling of the piping can be facilitated.
  • an outer tube forming the outer edge portion and an inner tube forming the partition portion and the plurality of flow paths may be separately formed. According to this configuration, it is possible to select a material suitable for the application, such as a material suitable for the external environment and the manufacturing process for the outer tube, and a material suitable for the cooling medium flowing inside the inner tube.
  • the present invention can also be a cooling circuit that includes a vehicle cooling circuit pipe and a heat generating portion.
  • the cooling circuit includes another heat exchanging portion in addition to the heat generating portion, and the plurality of flow passages serve as the cooling medium from the other heat exchanging portion to the heat generating portion. It can also be configured to include at least an outward path for sending the cooling medium and a return path for returning the cooling medium from the heat generating section to the other heat exchanging section.
  • the formation of the partition hollow portion is necessary to prevent heat exchange between the cooling mediums in the cooling circuit piping of the vehicle. Especially effective.
  • FIG. 1 shows a cooling circuit pipe for a vehicle according to a first embodiment of the invention and a cooling circuit using the same.
  • FIG. 2 is a perspective view showing a section of the cooling circuit piping of the vehicle according to the first embodiment.
  • FIG. 3 is a perspective view showing a cutaway cooling circuit pipe for a vehicle according to a second embodiment of the invention.
  • FIG. 4 is a cross-sectional view of a vehicle cooling pipe according to a modification of the second embodiment.
  • FIG. 5 is a cross-sectional view of a vehicle cooling circuit pipe according to a third embodiment of the invention.
  • FIG. 6 is a cross-sectional view of a vehicle cooling pipe according to a modification of the third embodiment.
  • FIG. 1 shows a cooling circuit 1 of a first embodiment of the invention.
  • a cooling circuit 1 supplies a cooling medium 3 such as cooling water to a heat generating unit 4 such as an internal combustion engine (engine), a motor, a battery, a power controller, a fuel cell, or other heat sources through a cooling circuit pipe 2 of a vehicle.
  • the exhaust gas is circulated through an exchange section 5 (eg, radiator, heater core, AT (automatic transmission)/CVT (continuously variable transmission), EGR (exhaust gas recirculation), etc.) for heat exchange.
  • an exchange section 5 eg, radiator, heater core, AT (automatic transmission)/CVT (continuously variable transmission), EGR (exhaust gas recirculation), etc.
  • FIG. 1 shows a diagram in which the vehicle cooling circuit pipe 2 of the first embodiment is used as the pipe connecting the heat generating portion 4 and the other heat exchanging portion 5, but the cooling circuit of the present invention However, it can also be used as a pipe connecting other heat exchange parts (for example, a heater core and a radiator).
  • the cooling circuit pipe 2 of the vehicle is cut halfway and the cross section is shown.
  • FIG. 2 is an enlarged cross-sectional view of the cooling circuit pipe 2 of the vehicle.
  • the vehicle cooling circuit pipe 2 has an outer edge portion 20 having a long cylindrical cross section.
  • the inside of the outer edge portion 20 is separated into two by a partition portion 21, and the partition portion 21 defines a first flow path 23 and a second flow path 25 inside the cooling circuit pipe 2 of the vehicle.
  • the first flow path 23 serves as a flow path for sending a cooling medium from another heat exchanging part 5 such as a radiator to the heat generating part 4
  • the second flow path 25 serves as a flow path from the heat generating part 4 to another heat such as a radiator. It becomes a flow path as a return path for the cooling medium to return to the exchange unit 5 .
  • the first channel 23 and the second channel 25 correspond to the plurality of channels of the invention.
  • the partition part 21 is formed with a partition hollow part 21a that is divided into upper and lower parts in FIG.
  • the vehicle cooling circuit pipe 2 of the first embodiment is made of synthetic resin and can be integrally formed by extrusion molding.
  • the pipe can be easily handled. Furthermore, the weight of the piping can be reduced, contributing to the weight reduction of the vehicle.
  • the bent portion of the vehicle cooling circuit pipe 2 may be bent in the same process as the extrusion molding process, or may be bent in a process after the extrusion molding process.
  • one vehicle cooling circuit pipe 2 of the first embodiment and the cooling circuit 1 using the same has two flows, the first flow path 23 and the second flow path 25. Since the passage is provided, the cooling medium 3 can be reciprocated with one member, the number of parts of the cooling circuit 1 can be reduced, and the layout of the cooling circuit 1 can be simplified.
  • the material of the cooling circuit pipe 2 of the vehicle is not limited to synthetic resin, and even if it is manufactured using other materials, it is possible to obtain the effects of the present invention such as reduction in the number of parts and simplification of the layout.
  • FIG. 3 is a perspective view showing a cross section of the vehicle cooling circuit pipe 2 according to the second embodiment of the invention.
  • Four outer edge hollow portions 20a are provided in the outer edge portion 20 of the vehicle cooling circuit pipe 2 of the second embodiment.
  • the four outer peripheral hollow portions 20a also provide insulation to the cooling circuit piping 2 of the vehicle. This prevents or suppresses heat exchange between the cooling medium 3 flowing in the cooling circuit pipe 2 of the vehicle and the outside air.
  • Other structures are the same as those of the vehicle cooling circuit pipe 2 of the first embodiment, and the same reference numerals are given to omit the description.
  • one vehicle cooling circuit pipe 2 has two flows, the first flow path 23 and the second flow path 25. Since the passage is provided, the cooling medium 3 can be reciprocated with one member, the number of parts of the cooling circuit 1 can be reduced, and the layout of the cooling circuit 1 can be simplified.
  • FIG. 4 is a sectional view of a modification of the vehicle cooling circuit pipe 2 according to the second embodiment of the invention.
  • a heat storage member 6 such as paraffin is enclosed in an outer peripheral hollow portion 20a.
  • the heat storage member 6 is enclosed in each of the outer edge hollow portions 20a outside the first flow path 23 and the second flow path 25.
  • the heat storage member 6 may be enclosed only in the case.
  • FIG. 5 is a cross-sectional view of a vehicle cooling circuit pipe 2 according to a third embodiment of the invention.
  • the vehicle cooling circuit pipe 2 of the third embodiment includes an outer tube 7 forming an outer edge portion 20, and two inner tubes 8 forming a partition portion 21 and a first flow path 23 and a second flow path 25. are separately formed, and then two inner tubes 8 are inserted into the outer tube 7 .
  • a material suitable for the application such as a material suitable for the external environment and manufacturing process for the outer tube 7 and a material suitable for the cooling medium flowing inside the inner tube 8 .
  • the partition portion 21 is formed by the cylindrical walls of the two inner tubes 8 .
  • Other structures are the same as those of the vehicle cooling circuit piping 2 of the first embodiment and the second embodiment, and the same reference numerals are given to omit the description.
  • one vehicle cooling circuit pipe 2 has two flows, the first flow path 23 and the second flow path 25. Since the passage is provided, the cooling medium 3 can be reciprocated with one member, the number of parts of the cooling circuit 1 can be reduced, and the layout of the cooling circuit 1 can be simplified.
  • FIG. 6 is a sectional view of a modification of the vehicle cooling circuit pipe 2 according to the third embodiment of the invention.
  • two inner tubular portions 80 forming the first flow path 23 and the second flow path 25 may be integrally formed.
  • the heat storage member 6 such as paraffin may be enclosed in the outer edge hollow portion 20a to improve the early warm-up of the internal combustion engine and the heating performance.
  • first flow path 23 and the second flow path 25 have been described as having a cylindrical shape, but the cross-sectional shape is not limited to a circular shape, and other shapes may be used as long as the cooling medium 3 can flow. You can match.
  • the first flow path 23 and the second flow path 25 may be formed in a square tubular shape having a rectangular cross section.
  • the cooling circuit pipe 2 for a vehicle provided with two flow paths, the first flow path 23 and the second flow path 25, is described, but the number of flow paths is limited to two.
  • the partition may be configured so that three or more flow paths are defined. Also by this, it is possible to obtain the effects of the invention such as reduction in the number of parts and simplification of the layout.
  • Cooling circuit 2 Vehicle cooling circuit piping 3 Cooling medium 4 Heat generating part 5 Other heat exchange part 6 Heat storage member 7 Outer tube 8 Inner tube 20 Outer edge part 20a Outer edge hollow part 21 Partition part 21a Partition hollow part 23 First flow path 25 second flow path 80 inner cylindrical portion

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

This tubing 2 for a vehicle cooling circuit is for use in a cooling circuit 1 in which a cooling medium 3 circulates in a vehicle. The tubing 2 for a vehicle cooling circuit comprises a cylindrical outer edge section 20 and a partition section 21 for dividing the interior of the outer edge section 20 into a plurality of flow paths 23, 25. The partition section 21 is preferably provided with partition hollow sections 21a. The outer edge section 20 is preferably provided with outer edge hollow sections 20a.

Description

車両の冷却回路用配管、及びこれを用いた冷却回路Vehicle cooling circuit piping and cooling circuit using the same
　本発明は、車両の冷却回路に用いられる車両の冷却回路用配管、及びこれを用いた冷却回路に関する。 The present invention relates to a vehicle cooling circuit pipe used in a vehicle cooling circuit, and a cooling circuit using the same.
　従来、車両において内燃機関を冷却する冷却媒体が循環する冷却回路が知られている（例えば、日本国特開２０１１－１８５２６７号公報参照）。冷却回路には、内燃機関を冷却して温まった冷却媒体の熱を利用するヒータコアなどの他の熱交換部も設けられている。 Conventionally, there is known a cooling circuit in which a cooling medium for cooling an internal combustion engine in a vehicle circulates (for example, see Japanese Patent Application Laid-Open No. 2011-185267). The cooling circuit is also provided with other heat exchanging parts such as a heater core that utilizes the heat of the coolant warmed by cooling the internal combustion engine.
特開２０１１－１８５２６７号公報JP 2011-185267 A
　従来の冷却回路に用いられる配管は、１本で冷却媒体が流れる一つの流路が形成されている。そして、ハイブリッド車では、内燃機関（エンジン）、モータ、バッテリ等、最適温度が異なる複数の装置を備えるため、各装置の最適温度に応じて独立した複数の冷却回路を車両に設ける場合がある。これは、電気自動車や燃料電池車においても同様であり、ハイブリッド車、電気自動車、及び燃料電池車では、特に、車両における冷却回路のレイアウトが複雑化する傾向にある。 A single pipe used in a conventional cooling circuit forms a flow path through which a cooling medium flows. A hybrid vehicle includes a plurality of devices with different optimum temperatures, such as an internal combustion engine (engine), a motor, and a battery. The same applies to electric vehicles and fuel cell vehicles, and in hybrid vehicles, electric vehicles, and fuel cell vehicles, the layout of the cooling circuit in the vehicle tends to be particularly complicated.
　本発明は、以上の点に鑑み、冷却回路のレイアウトの簡略化を図ることができる車両の冷却回路用配管、及びそれを用いた冷却回路を提供することを目的とする。 In view of the above points, it is an object of the present invention to provide a cooling circuit pipe for a vehicle that can simplify the layout of the cooling circuit, and a cooling circuit using the same.
　［１］上記目的を達成するため、本発明は、
　車両において冷却媒体（例えば、実施形態の冷却媒体３。以下同一。）が循環する冷却回路（例えば、実施形態の冷却回路１。以下同一。）に用いられる車両の冷却回路用配管（例えば、実施形態の車両の冷却回路用配管２。以下同一。）であって、
　筒状の外縁部（例えば、実施形態の外縁部２０。以下同一。）と、
　前記外縁部の中を複数の流路（例えば、実施形態の第１流路２３、第２流路２５。以下同一。）に隔てる仕切部（例えば、実施形態の仕切部２１。以下同一。）と、
　を備えることを特徴とする。 [1] In order to achieve the above object, the present invention
A vehicle cooling circuit pipe (for example, an embodiment The cooling circuit pipe 2 of the vehicle in the form of the following (same below),
A cylindrical outer edge (for example, the outer edge 20 of the embodiment; the same applies hereinafter);
A partition portion (for example, the partition portion 21 of the embodiment; the same shall apply hereinafter) that separates the inside of the outer edge portion into a plurality of passages (for example, the first passage 23 and the second flow passage 25 of the embodiment; the same shall apply hereinafter). When,
characterized by comprising
　本発明によれば、１つの配管の中に複数の流路が設けられているため、冷却回路の部品点数を削減することができ、冷却回路のレイアウトの簡略化を図ることができる。 According to the present invention, since a plurality of flow paths are provided in one pipe, it is possible to reduce the number of components of the cooling circuit and simplify the layout of the cooling circuit.
　［２］また、本発明においては、前記仕切部には、仕切中空部（例えば、実施形態の仕切中空部２１ａ。以下同一。）が設けられていてもよい。当該構成によれば、仕切中空部によって、仕切部を介した複数の流路の中を流れる冷却媒体の間での熱交換を防止又は抑制することができる。 [2] In addition, in the present invention, the partition may be provided with a partition hollow portion (for example, the partition hollow portion 21a of the embodiment; hereinafter the same). According to this configuration, the partition hollow portion can prevent or suppress heat exchange between the cooling medium flowing through the plurality of flow paths via the partition portion.
　［３］また、本発明においては、前記外縁部には、外縁中空部（例えば、実施形態の外縁中空部２０ａ。以下同一。）が設けられていてもよい。当該構成によれば、外縁部によって、車両の冷却回路用配管内を流れる冷却媒体が外気と熱交換することを防止又は抑制することができる。 [3] In addition, in the present invention, the outer edge portion may be provided with an outer edge hollow portion (for example, an outer edge hollow portion 20a in the embodiment; the same shall apply hereinafter). According to this configuration, the outer edge portion can prevent or suppress heat exchange between the cooling medium flowing in the cooling circuit pipe of the vehicle and the outside air.
　［４］また、本発明において、前記外縁中空部には、蓄熱部材が封入されていてもよい。このようにすると、外縁中空部に熱が蓄えられて、内燃機関の早期暖機や暖房性能を向上できる。 [4] In addition, in the present invention, a heat storage member may be enclosed in the outer hollow portion. By doing so, heat is stored in the outer peripheral hollow portion, and early warm-up and heating performance of the internal combustion engine can be improved.
　［５］また、本発明において、車両の冷却回路用配管が合成樹脂製であってもよい。このようにすると、配管の取り扱いを容易にできる。 [5] In addition, in the present invention, the cooling circuit piping of the vehicle may be made of synthetic resin. By doing so, the handling of the piping can be facilitated.
　なぜなら、ハイブリッド車、電気自動車、及び燃料電池車では特に、配管が長くなったり、フロアの下まで伸びたりする。このようなフロアの下まで伸びるような長い配管としてゴム製のホースを利用すると、弛みなどが生じて取り扱いが難しい。これに対して、冷却用配管を合成樹脂にした場合には、そのような問題がなく、配管の取り扱いを容易にできる。さらに、配管の重量が軽くなり、車両の軽量化にも貢献できる。 This is because, especially in hybrid vehicles, electric vehicles, and fuel cell vehicles, the pipes are long and extend below the floor. If a rubber hose is used as such a long pipe that extends to the bottom of the floor, it becomes slack and difficult to handle. On the other hand, if the cooling pipes are made of synthetic resin, there is no such problem, and the pipes can be easily handled. Furthermore, the weight of the piping can be reduced, contributing to the weight reduction of the vehicle.
　［６］また、本発明は、前記外縁部を形成するアウターチューブと、前記仕切部と前記複数の流路を形成するインナーチューブとが別体形成されていてもよい。当該構成によれば、アウターチューブは外部環境や製造工程に適した材料、インナーチューブは内部に流れる冷却媒体に適した材料にする等、用途に即した材料を選択できる。 [6] Further, in the present invention, an outer tube forming the outer edge portion and an inner tube forming the partition portion and the plurality of flow paths may be separately formed. According to this configuration, it is possible to select a material suitable for the application, such as a material suitable for the external environment and the manufacturing process for the outer tube, and a material suitable for the cooling medium flowing inside the inner tube.
　［７］また、本発明は、車両の冷却回路用配管と発熱部とを備えた冷却回路とすることもできる。 [7] In addition, the present invention can also be a cooling circuit that includes a vehicle cooling circuit pipe and a heat generating portion.
　［８］また、本発明においては、冷却回路が発熱部に加えて他の熱交換部を備えており、前記複数の流路として、前記他の熱交換部から前記発熱部へ前記冷却媒体が送られる往路と、前記発熱部から前記他の熱交換部へ前記冷却媒体が戻される復路と、が少なくとも含まれているように構成することもできる。この場合、往路と復路とで内部を流れる冷却媒体の温度の差が生じるため、仕切中空部を形成することが車両の冷却回路用配管内での冷却媒体同士での熱交換を防止するために特に有効となる。 [8] Further, in the present invention, the cooling circuit includes another heat exchanging portion in addition to the heat generating portion, and the plurality of flow passages serve as the cooling medium from the other heat exchanging portion to the heat generating portion. It can also be configured to include at least an outward path for sending the cooling medium and a return path for returning the cooling medium from the heat generating section to the other heat exchanging section. In this case, since there is a difference in the temperature of the cooling medium flowing inside between the outward and return paths, the formation of the partition hollow portion is necessary to prevent heat exchange between the cooling mediums in the cooling circuit piping of the vehicle. Especially effective.
図１は、発明の第１実施形態の車両の冷却回路用配管、及びこれを用いた冷却回路である。FIG. 1 shows a cooling circuit pipe for a vehicle according to a first embodiment of the invention and a cooling circuit using the same. 図２は、第１実施形態の車両の冷却回路用配管を切断して示す斜視図である。FIG. 2 is a perspective view showing a section of the cooling circuit piping of the vehicle according to the first embodiment. 図３は、発明の第２実施形態の車両の冷却回路用配管を切断して示す斜視図である。FIG. 3 is a perspective view showing a cutaway cooling circuit pipe for a vehicle according to a second embodiment of the invention. 図４は、第２実施形態の変形例に係る車両の冷却用配管を切断して示す断面図である。FIG. 4 is a cross-sectional view of a vehicle cooling pipe according to a modification of the second embodiment. 図５は、発明の第３実施形態の車両の冷却回路用配管を切断して示す断面図である。FIG. 5 is a cross-sectional view of a vehicle cooling circuit pipe according to a third embodiment of the invention. 図６は、第３実施形態の変形例に係る車両の冷却用配管を切断して示す断面図である。FIG. 6 is a cross-sectional view of a vehicle cooling pipe according to a modification of the third embodiment.
　図を参照して、発明の実施形態の車両の冷却回路用配管、及びこれを用いた冷却回路を詳細に説明する。 A cooling circuit pipe for a vehicle according to an embodiment of the invention and a cooling circuit using the same will be described in detail with reference to the drawings.
　［第１実施形態］
　図１は、発明の第１実施形態の冷却回路１を示している。冷却回路１は、車両の冷却回路用配管２を介して、冷却水などの冷却媒体３を、内燃機関（エンジン）、モータ、バッテリ、パワーコントローラー、燃料電池等の発熱部４、やその他の熱交換部５（例えば、ラジエータ、ヒータコア、ＡＴ（自動変速機）／ＣＶＴ（無段変速機）、ＥＧＲ（排出ガス再循環）など。）に循環させて熱交換を行うものである。 [First embodiment]
FIG. 1 shows a cooling circuit 1 of a first embodiment of the invention. A cooling circuit 1 supplies a cooling medium 3 such as cooling water to a heat generating unit 4 such as an internal combustion engine (engine), a motor, a battery, a power controller, a fuel cell, or other heat sources through a cooling circuit pipe 2 of a vehicle. The exhaust gas is circulated through an exchange section 5 (eg, radiator, heater core, AT (automatic transmission)/CVT (continuously variable transmission), EGR (exhaust gas recirculation), etc.) for heat exchange.
　図１では、発熱部４とその他の熱交換部５とを接続する配管として、第１実施形態の車両の冷却回路用配管２を用いている図を示しているが、発明の冷却回路はこれに限らず、例えば、その他の熱交換部同士（例えば、ヒータコアとラジエータなど。）を接続する配管として用いることもできる。また、図１では、車両の冷却回路用配管２を途中で切断して断面が見える状態で示している。 FIG. 1 shows a diagram in which the vehicle cooling circuit pipe 2 of the first embodiment is used as the pipe connecting the heat generating portion 4 and the other heat exchanging portion 5, but the cooling circuit of the present invention However, it can also be used as a pipe connecting other heat exchange parts (for example, a heater core and a radiator). In FIG. 1, the cooling circuit pipe 2 of the vehicle is cut halfway and the cross section is shown.
　図２は、車両の冷却回路用配管２の断面を拡大して示した図である。図２に示すように、車両の冷却回路用配管２は、断面長円筒形状の外縁部２０を備えている。その外縁部２０の内部は、仕切部２１で２つに隔たれており、この仕切部２１によって、車両の冷却回路用配管２の内部には第１流路２３と第２流路２５とが画定されている。例えば、第１流路２３がラジエータなどの他の熱交換部５から発熱部４へ冷却媒体が送られる往路としての流路となり、第２流路２５が発熱部４からラジエータなどの他の熱交換部５へ冷却媒体が戻る復路としての流路となる。第１実施形態においては、第１流路２３及び第２流路２５が発明の複数の流路に該当する。 FIG. 2 is an enlarged cross-sectional view of the cooling circuit pipe 2 of the vehicle. As shown in FIG. 2, the vehicle cooling circuit pipe 2 has an outer edge portion 20 having a long cylindrical cross section. The inside of the outer edge portion 20 is separated into two by a partition portion 21, and the partition portion 21 defines a first flow path 23 and a second flow path 25 inside the cooling circuit pipe 2 of the vehicle. It is For example, the first flow path 23 serves as a flow path for sending a cooling medium from another heat exchanging part 5 such as a radiator to the heat generating part 4, and the second flow path 25 serves as a flow path from the heat generating part 4 to another heat such as a radiator. It becomes a flow path as a return path for the cooling medium to return to the exchange unit 5 . In the first embodiment, the first channel 23 and the second channel 25 correspond to the plurality of channels of the invention.
　仕切部２１には、図２における上下２つに区切られた仕切中空部２１ａが形成されており、この仕切中空部２１ａによって空気層を形成して仕切部２１に断熱性を持たせている。これにより、往路としての第１流路２３に冷却された冷却媒体３を流し、復路としての第２流路２５に発熱部４を冷却して温度が上昇した冷却媒体３を流しても、車両の冷却回路用配管２内における第１流路２３と第２流路２５との間で熱交換が行われることを防止又は抑制することができる。 The partition part 21 is formed with a partition hollow part 21a that is divided into upper and lower parts in FIG. As a result, even if the cooled cooling medium 3 is passed through the first flow path 23 as the forward path and the cooling medium 3 whose temperature has been raised by cooling the heat generating portion 4 is flowed through the second flow path 25 as the return path, the vehicle heat exchange between the first flow path 23 and the second flow path 25 in the cooling circuit pipe 2 can be prevented or suppressed.
　第１実施形態の車両の冷却回路用配管２は、合成樹脂製であって、押出成形により一体に形成することができる。車両の冷却回路用配管２を合成樹脂製にすることで、配管が長く、車両のフロアの下まで伸びるものであったとしても、配管の取り扱いを容易にできる。さらに、配管の重量が軽くなり、車両の軽量化にも貢献できる。 The vehicle cooling circuit pipe 2 of the first embodiment is made of synthetic resin and can be integrally formed by extrusion molding. By making the cooling circuit pipe 2 of the vehicle made of synthetic resin, even if the pipe is long and extends to the bottom of the floor of the vehicle, the pipe can be easily handled. Furthermore, the weight of the piping can be reduced, contributing to the weight reduction of the vehicle.
　また、押出成形で車両の冷却回路用配管２を成型することにより、車両の冷却回路用配管２に第１流路２３及び第２流路２５の複数の流路を形成することが容易となる。車両の冷却回路用配管２の屈曲部分については、押出成形の工程と同一工程時に曲げてもいいし、押出成形工程の後の工程で曲げてもよい。 Further, by forming the vehicle cooling circuit pipe 2 by extrusion molding, it becomes easy to form a plurality of flow paths of the first flow path 23 and the second flow path 25 in the vehicle cooling circuit pipe 2. . The bent portion of the vehicle cooling circuit pipe 2 may be bent in the same process as the extrusion molding process, or may be bent in a process after the extrusion molding process.
　第１実施形態の車両の冷却回路用配管２及びこれを用いた冷却回路１によれば、１つの車両の冷却回路用配管２が第１流路２３と第２流路２５との２つの流路を備えるため、１つの部材で、冷却媒体３を往復させることができ、冷却回路１の部品点数を削減して、冷却回路１のレイアウトの簡略化を図ることができる。なお、車両の冷却回路用配管２の材質は合成樹脂に限らず、他の材料を用いて製造しても、部品点数の削減、及びレイアウトの簡略化という発明の作用効果を得ることができる。 According to the vehicle cooling circuit pipe 2 of the first embodiment and the cooling circuit 1 using the same, one vehicle cooling circuit pipe 2 has two flows, the first flow path 23 and the second flow path 25. Since the passage is provided, the cooling medium 3 can be reciprocated with one member, the number of parts of the cooling circuit 1 can be reduced, and the layout of the cooling circuit 1 can be simplified. The material of the cooling circuit pipe 2 of the vehicle is not limited to synthetic resin, and even if it is manufactured using other materials, it is possible to obtain the effects of the present invention such as reduction in the number of parts and simplification of the layout.
　［第２実施形態］
　図３は、発明の第２実施形態の車両の冷却回路用配管２の切断断面を示す斜視図である。第２実施形態の車両の冷却回路用配管２の外縁部２０には、外縁中空部２０ａが４つに区切られて設けられている。この４つの外縁中空部２０ａによって車両の冷却回路用配管２にも断熱性を持たせている。これにより、車両の冷却回路用配管２内を流れる冷却媒体３が外気と熱交換することを防止又は抑制している。他の構造は、第１実施形態の車両の冷却回路用配管２と同一であり、同一の符号を付して説明を省略する。 [Second embodiment]
FIG. 3 is a perspective view showing a cross section of the vehicle cooling circuit pipe 2 according to the second embodiment of the invention. Four outer edge hollow portions 20a are provided in the outer edge portion 20 of the vehicle cooling circuit pipe 2 of the second embodiment. The four outer peripheral hollow portions 20a also provide insulation to the cooling circuit piping 2 of the vehicle. This prevents or suppresses heat exchange between the cooling medium 3 flowing in the cooling circuit pipe 2 of the vehicle and the outside air. Other structures are the same as those of the vehicle cooling circuit pipe 2 of the first embodiment, and the same reference numerals are given to omit the description.
　第２実施形態の車両の冷却回路用配管２及びこれを用いた冷却回路１によれば、１つの車両の冷却回路用配管２が第１流路２３と第２流路２５との２つの流路を備えるため、１つの部材で、冷却媒体３を往復させることができ、冷却回路１の部品点数を削減して、冷却回路１のレイアウトの簡略化を図ることができる。 According to the vehicle cooling circuit pipe 2 of the second embodiment and the cooling circuit 1 using the same, one vehicle cooling circuit pipe 2 has two flows, the first flow path 23 and the second flow path 25. Since the passage is provided, the cooling medium 3 can be reciprocated with one member, the number of parts of the cooling circuit 1 can be reduced, and the layout of the cooling circuit 1 can be simplified.
　図４は、発明の第２実施形態に係る車両の冷却回路用配管２の変形例の断面図である。当該車両の冷却回路用配管２では、外縁中空部２０ａ内にパラフィン等の蓄熱部材６が封入されている。これにより、内燃機関の早期暖機や暖房性能を向上できる。図４では、第１流路２３と第２流路２５の外側の外縁中空部２０ａそれぞれに蓄熱部材６が封入されているが、例えば、往路となる第１流路２３側の外縁中空部２０ａのみに蓄熱部材６が封入されていてもよい。 FIG. 4 is a sectional view of a modification of the vehicle cooling circuit pipe 2 according to the second embodiment of the invention. In the cooling circuit pipe 2 of the vehicle, a heat storage member 6 such as paraffin is enclosed in an outer peripheral hollow portion 20a. As a result, early warm-up and heating performance of the internal combustion engine can be improved. In FIG. 4, the heat storage member 6 is enclosed in each of the outer edge hollow portions 20a outside the first flow path 23 and the second flow path 25. The heat storage member 6 may be enclosed only in the case.
　［第３実施形態］
　図５は、発明の第３実施形態の車両の冷却回路用配管２の断面図である。第３実施形態の車両の冷却回路用配管２は、外縁部２０を形成するアウターチューブ７と、仕切部２１と第１流路２３及び第２流路２５を形成する２本のインナーチューブ８とが別体形成された後、アウターチューブ７に２本のインナーチューブ８を挿入することで形成されている。これにより、アウターチューブ７は外部環境や製造工程に適した材料、インナーチューブ８は内部に流れる冷却媒体に適した材料にする等、用途に即した材料を選択できる。なお、第３実施形態の車両の冷却回路用配管２においては、２本のインナーチューブ８の円筒壁によって仕切部２１が形成されている。他の構造は、第１実施形態及び第２実施形態の車両の冷却回路用配管２と同一であり、同一の符号を付して説明を省略する。 [Third Embodiment]
FIG. 5 is a cross-sectional view of a vehicle cooling circuit pipe 2 according to a third embodiment of the invention. The vehicle cooling circuit pipe 2 of the third embodiment includes an outer tube 7 forming an outer edge portion 20, and two inner tubes 8 forming a partition portion 21 and a first flow path 23 and a second flow path 25. are separately formed, and then two inner tubes 8 are inserted into the outer tube 7 . As a result, it is possible to select a material suitable for the application, such as a material suitable for the external environment and manufacturing process for the outer tube 7 and a material suitable for the cooling medium flowing inside the inner tube 8 . In addition, in the vehicle cooling circuit pipe 2 of the third embodiment, the partition portion 21 is formed by the cylindrical walls of the two inner tubes 8 . Other structures are the same as those of the vehicle cooling circuit piping 2 of the first embodiment and the second embodiment, and the same reference numerals are given to omit the description.
　第３実施形態の車両の冷却回路用配管２及びこれを用いた冷却回路１によれば、１つの車両の冷却回路用配管２が第１流路２３と第２流路２５との２つの流路を備えるため、１つの部材で、冷却媒体３を往復させることができ、冷却回路１の部品点数を削減して、冷却回路１のレイアウトの簡略化を図ることができる。 According to the vehicle cooling circuit pipe 2 of the third embodiment and the cooling circuit 1 using the same, one vehicle cooling circuit pipe 2 has two flows, the first flow path 23 and the second flow path 25. Since the passage is provided, the cooling medium 3 can be reciprocated with one member, the number of parts of the cooling circuit 1 can be reduced, and the layout of the cooling circuit 1 can be simplified.
　図６は、発明の第３実施形態に係る車両の冷却回路用配管２の変形例の断面図である。図６に示すように、インナーチューブ８では、第１流路２３及び第２流路２５の各流路を形成する二本の内筒部８０を一体形成してもよい。また、この第３実施形態の変形例においても外縁中空部２０ａ内にパラフィン等の蓄熱部材６を封入して、内燃機関の早期暖機や暖房性能の向上を図ってもよい。 FIG. 6 is a sectional view of a modification of the vehicle cooling circuit pipe 2 according to the third embodiment of the invention. As shown in FIG. 6, in the inner tube 8, two inner tubular portions 80 forming the first flow path 23 and the second flow path 25 may be integrally formed. Also in the modification of the third embodiment, the heat storage member 6 such as paraffin may be enclosed in the outer edge hollow portion 20a to improve the early warm-up of the internal combustion engine and the heating performance.
　なお、上述の各実施形態では、第１流路２３及び第２流路２５が円筒形状のものを説明したが、断面形状は円形に限らず、冷却媒体３を流すことができれば他の形状で合ってもよい。例えば、断面矩形状の角筒形状に第１流路２３及び第２流路２５を形成してもよい。 In each of the above-described embodiments, the first flow path 23 and the second flow path 25 have been described as having a cylindrical shape, but the cross-sectional shape is not limited to a circular shape, and other shapes may be used as long as the cooling medium 3 can flow. You can match. For example, the first flow path 23 and the second flow path 25 may be formed in a square tubular shape having a rectangular cross section.
　また、上述の各実施形態では、第１流路２３及び第２流路２５の２つの流路を備えた車両の冷却回路用配管２を説明したが、流路の数は２つに限定されず、例えば、３つ以上の流路が画定されるように仕切部を構成してもよい。これによっても、部品点数削減及びレイアウトの簡略化という発明の作用効果を奏することができる。 Further, in each of the above-described embodiments, the cooling circuit pipe 2 for a vehicle provided with two flow paths, the first flow path 23 and the second flow path 25, is described, but the number of flow paths is limited to two. Instead, for example, the partition may be configured so that three or more flow paths are defined. Also by this, it is possible to obtain the effects of the invention such as reduction in the number of parts and simplification of the layout.
１　冷却回路
２　車両の冷却回路用配管
３　冷却媒体
４　発熱部
５　その他の熱交換部
６　蓄熱部材
７　アウターチューブ
８　インナーチューブ
２０　外縁部
２０ａ　外縁中空部
２１　仕切部
２１ａ　仕切中空部
２３　第１流路
２５　第２流路
８０　内筒部  1 Cooling circuit 2 Vehicle cooling circuit piping 3 Cooling medium 4 Heat generating part 5 Other heat exchange part 6 Heat storage member 7 Outer tube 8 Inner tube 20 Outer edge part 20a Outer edge hollow part 21 Partition part 21a Partition hollow part 23 First flow path 25 second flow path 80 inner cylindrical portion

Claims (8)

  1. 　車両における冷却媒体が循環する冷却回路に用いられる車両の冷却回路用配管であって、
    　筒状の外縁部と、
    　前記外縁部の中を複数の流路に隔てる仕切部と、
    　を備えることを特徴とする車両の冷却回路用配管。     A vehicle cooling circuit pipe used in a cooling circuit in which a cooling medium in a vehicle circulates,
    a cylindrical outer edge;
    a partition that separates the inside of the outer edge into a plurality of flow paths;
    Piping for a cooling circuit of a vehicle, characterized by comprising:
  2. 　請求項１に記載の車両の冷却回路用配管であって、
    　前記仕切部には、仕切中空部が設けられていることを特徴とする車両の冷却回路用配管。     A cooling circuit pipe for a vehicle according to claim 1,
    A cooling circuit pipe for a vehicle, wherein the partition portion is provided with a partition hollow portion.
  3. 　請求項１又は請求項２に記載の車両の冷却回路用配管であって、
    　前記外縁部には、外縁中空部が設けられていることを特徴とする車両の冷却回路用配管。     A cooling circuit pipe for a vehicle according to claim 1 or claim 2,
    A cooling circuit pipe for a vehicle, wherein the outer edge portion is provided with an outer edge hollow portion.
  4. 　請求項３に記載の車両の冷却回路用配管であって、
    　前記外縁中空部には、蓄熱部材が封入されていることを特徴とする車両の冷却回路用配管。     A cooling circuit pipe for a vehicle according to claim 3,
    A cooling circuit pipe for a vehicle, wherein a heat storage member is enclosed in the outer peripheral hollow portion.
  5. 　請求項１から請求項４の何れか１項に記載の車両の冷却回路用配管であって、
    　合成樹脂製であることを特徴とする車両の冷却回路用配管。     A vehicle cooling circuit pipe according to any one of claims 1 to 4,
    A cooling circuit pipe for a vehicle, characterized by being made of a synthetic resin.
  6. 　請求項１から請求項５の何れか１項に記載の車両の冷却回路用配管であって、
    　前記外縁部を形成するアウターチューブと、前記仕切部と前記複数の流路を形成するインナーチューブとが別体形成されていることを特徴とする車両の冷却回路用配管。     A cooling circuit pipe for a vehicle according to any one of claims 1 to 5,
    A cooling circuit pipe for a vehicle, wherein an outer tube forming the outer edge portion and an inner tube forming the partition portion and the plurality of flow paths are separately formed.
  7. 　請求項１から請求項６の何れか１項に記載の車両の冷却回路用配管を備える冷却回路であって、
    　発熱部を備えた冷却回路。     A cooling circuit comprising the vehicle cooling circuit pipe according to any one of claims 1 to 6,
    A cooling circuit with a heat generating part.
  8. 　請求項７に記載の冷却回路であって、
    　他の熱交換部を備え、
    　前記複数の流路には、前記他の熱交換部から前記発熱部へ前記冷却媒体が送られる往路と、前記発熱部から前記他の熱交換部へ前記冷却媒体が戻される復路と、が少なくとも含まれていることを特徴とする冷却回路。      A cooling circuit according to claim 7, wherein
    with other heat exchange parts,
    The plurality of flow paths include at least an outward path through which the cooling medium is sent from the other heat exchanging section to the heat generating section and a return path through which the cooling medium is returned from the heat exchanging section to the other heat exchanging section. a cooling circuit comprising:
PCT/JP2022/000538 2021-02-05 2022-01-11 Tubing for vehicle cooling circuit and cooling circuit using same WO2022168534A1 (en)

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JP2021017433A JP2022120504A (en) 2021-02-05 2021-02-05 Pipeline for vehicular cooling circuit and cooling circuit using the same
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746191U (en) * 1980-09-01 1982-03-13
JPS5840696U (en) * 1981-09-12 1983-03-17 橋本フオ−ミング工業株式会社 insulated conduit
JPH0360679U (en) * 1989-10-19 1991-06-14
JPH07144221A (en) * 1993-06-29 1995-06-06 Sankin Kk Tube with internal parting wall and manufacture thereof
JP2001012881A (en) * 1999-06-25 2001-01-19 Nakkusu Kk Heat storage body
JP2001038799A (en) * 1999-07-29 2001-02-13 Toyoda Gosei Co Ltd Production of resin pipe
JP2005291484A (en) * 2004-03-12 2005-10-20 Denso Corp Heating piping
JP2005299850A (en) * 2004-04-14 2005-10-27 Calsonic Kansei Corp Integrated double-pipe
WO2020053408A1 (en) * 2018-09-13 2020-03-19 Grohe Ag Outlet for water fittings
JP2020128171A (en) * 2019-02-08 2020-08-27 古河電気工業株式会社 Heat accumulating piping hose and heat accumulating heating apparatus

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746191U (en) * 1980-09-01 1982-03-13
JPS5840696U (en) * 1981-09-12 1983-03-17 橋本フオ−ミング工業株式会社 insulated conduit
JPH0360679U (en) * 1989-10-19 1991-06-14
JPH07144221A (en) * 1993-06-29 1995-06-06 Sankin Kk Tube with internal parting wall and manufacture thereof
JP2001012881A (en) * 1999-06-25 2001-01-19 Nakkusu Kk Heat storage body
JP2001038799A (en) * 1999-07-29 2001-02-13 Toyoda Gosei Co Ltd Production of resin pipe
JP2005291484A (en) * 2004-03-12 2005-10-20 Denso Corp Heating piping
JP2005299850A (en) * 2004-04-14 2005-10-27 Calsonic Kansei Corp Integrated double-pipe
WO2020053408A1 (en) * 2018-09-13 2020-03-19 Grohe Ag Outlet for water fittings
JP2020128171A (en) * 2019-02-08 2020-08-27 古河電気工業株式会社 Heat accumulating piping hose and heat accumulating heating apparatus

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