JP2004027988A - Air-cooled type fluid cooler buried in piping - Google Patents

Air-cooled type fluid cooler buried in piping Download PDF

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Publication number
JP2004027988A
JP2004027988A JP2002186998A JP2002186998A JP2004027988A JP 2004027988 A JP2004027988 A JP 2004027988A JP 2002186998 A JP2002186998 A JP 2002186998A JP 2002186998 A JP2002186998 A JP 2002186998A JP 2004027988 A JP2004027988 A JP 2004027988A
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Japan
Prior art keywords
fuel
air
cooling plate
cooling
elongated tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002186998A
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Japanese (ja)
Inventor
Tetsuo Ogata
小方 哲夫
Koichi Hayashi
林 耕一
Haruo Nishihara
西原 治雄
Choju Amano
天野 長壽
Yuji Miyauchi
宮内 祐治
Daisuke Asahi
朝日 大輔
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Usui Kokusai Sangyo Kaisha Ltd
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Usui Kokusai Sangyo Kaisha Ltd
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Priority to JP2002186998A priority Critical patent/JP2004027988A/en
Publication of JP2004027988A publication Critical patent/JP2004027988A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0472Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being helically or spirally coiled
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/22Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further tubular elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/048Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12Elements constructed in the shape of a hollow panel, e.g. with channels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/14Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air-cooled type fluid cooler capable of preventing the air pollution and the fuel smell caused by the temperature rising of a fuel in a diesel engine and a gasoline engine. <P>SOLUTION: This air-cooled type fluid cooler comprises a cooling plate made of aluminum die casting, and a long and thin tube made of stainless steel or carbon steel. The thin and long tube is bent and mounted on an approximately flat surface in a state of spiral, corrugated, coil or S-shape of one or several stages, and casted in the cooling plate by aluminum die casting . The cooling plate is provided with a number of cooling fins at an outer side of one or both faces for cooling the fuel or oil flowing in the long and thin tube by heat radiation by the cooling fins. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、主としてディーゼルエンジン及びガソリンエンジン用の燃料冷却器に係り、特にリターン燃料の温度を低下させるために自動車等の床下に配置するのに適した空冷式燃料冷却器や熱媒体流体を用いて間接冷却する場合の冷却器などに係るものである。
【0002】
【従来の技術】
一般に内燃機関のエンジンの燃料が燃料タンクから燃料噴射装置へ送給される過程で機関や排気系部品からの伝熱などにより高温となり、燃料液中に気泡(ベーパ)が発生すると、燃料噴射装置によりシリンダー内に噴射される燃料液中にこの気泡が混入してベーパロックを生じ、噴射時間当りの燃料の噴射量が減少し、所定の出力が得られないといった問題がある。
一方、エンジンで燃焼されなかった余剰燃料は、リターン配管を経由してタンクへ戻されるが、いったん高圧とされてエンジンの高温部付近を通過するため加温されて高温の戻り燃料となり、やがてタンク内すべての燃料の温度を上昇(ガソリン車で約60℃)させ、タンクからベーパとなって放出され、大気汚染や、キャビンの燃料臭となって問題を起こす可能性がある。ディーゼルエンジン、特にコモンレールを使用した蓄圧式燃料噴射システムにおいては、圧力が極めて高圧であるためリターン燃料の高温化(タンク内温度は120〜170℃まで昇温する)が特に問題となっている。
【0003】
かかる対策として、ガソリンエンジンの場合は、燃料タンクと燃料噴射装置間の燃料供給配管を自動車の空調装置(エアコン)の配管で冷却して燃料温度を沸点未満に下げる方法がとられているが、コモンレールを使用した蓄圧式燃料噴射システム採用のディーゼルエンジンの場合にあっては、燃料は全く冷却されていないのが現状である。このため、コモンレールを使用した蓄圧式燃料噴射システム採用のディーゼルエンジンの場合は、ベーパロックによる噴射の不安定化をはじめ、樹脂製のタンク部品(ホース等)、樹脂製タンクの熱劣化も余儀なくされるという問題があった。
【0004】
本出願人の先願による特開2001−200765「ガソリンエンジンにおける燃料冷却方法」では、燃料配管の途中に燃料温度を沸騰気泡発生温度未満に下げる熱交換器を設けている。この熱交換器内には毛細管構造のウィック材が張り付けられ、熱媒体流体が毛細管内を上昇する際に蒸発による気化熱を奪って燃料を冷却する仕組みになっている。
【0005】
【発明が解決しようとする課題】
本発明の目的は、ディーゼルエンジンやガソリンエンジンにおいて前述した燃料高温化による大気汚染や燃料臭を防止するための空冷式の流体冷却器を提供することにある。
【0006】
【課題を解決するための手段】
本発明の前述した課題は、アルミダイキャスト製の冷却プレートと、ステンレス鋼製又は(好ましくは内面にニッケル等の各種めっきを施した)炭素鋼製の細長チューブとを備え、この細長チューブが略平面上で1段又は複数段にわたりスパイラル状(らせん形)・コルゲート状(波形)・コイル状(渦巻形)あるいはS字状などに屈曲配置され、アルミダイキャスト加工により前記冷却プレート内に鋳込まれており、前記冷却プレートはその片面又は両面の外側に多数のひれ状の冷却フィンを有しており、前記冷却フィンの放熱により細長チューブ内を流れる燃料あるいはオイル等の流体を冷却するようになっている配管埋め込み型空冷式流体冷却器によって達成される。
【0007】
【作用】
従来、このような燃料冷却器(熱交換器)を床下に配置すると、飛び石による衝撃で破損し燃料が飛散する可能性があり、強度的な問題を解決しなければならなかった。
本発明によれば、強固なアルミダイキャスト製の冷却プレートの内部に細長チューブが鋳込まれているので、細長チューブが破損する可能性が激減し、充分な耐久性が得られる。細長チューブはステンレス鋼製又は内面にニッケル等の各種めっきを施した炭素鋼製なので、燃料による腐食に耐えることができる。
【0008】
細長チューブは略平面上で1段又は複数段にわたりスパイラル状(らせん形)・コルゲート状(波形)・コイル状(渦巻形)あるいはS字状などに屈曲配置され、アルミダイキャスト加工により冷却プレート内に鋳込まれているので、冷却プレートのほぼ全体と緊密に接触して熱を伝達することになる。冷却プレートにはその片面又は両面の外側に多数のひれ状の冷却フィンが設けられているので、車外の空気に直接触れて熱を放散することができる。かくして、冷却フィンの放熱により細長チューブ内を流れる燃料あるいはオイル等の流体を冷却することができて、前述した燃料高温化による大気汚染や燃料臭を防止できるという作用効果が得られる。
冷却プレートの外形形状はチューブの形状に合わせて円形・四角形その他任意の形状にすることができる。
本発明の他の特徴及び利点は、添付図面の実施例を参照した以下の記載により明らかとなろう。
【0009】
【発明の実施の形態】
図1A,Bは本発明の第1実施例による配管埋め込み型空冷式流体冷却器10の全体を表しており、図1Aは平面図、図1Bは側面図で、一部を破断して表している。この冷却器10では、アルミダイキャスト製の冷却プレート12の内部にステンレス鋼製、又は好ましくは内面にニッケル等の各種めっきを施した炭素鋼製の細長チューブ14が鋳込まれている。
図1Bに示すように、細長チューブ14は略平面上で1段に延伸し、スパイラル状に巻回配置されており、燃料は入口部分16から入って中央の出口部分18から出ていく。
【0010】
冷却プレート12は、スパイラル状に巻回配置された細長チューブ14のほぼ全体を受け入れるハウジング24と、ハウジング24の片面(上面)の外側に形成された多数のひれ状の冷却フィン26とを包含している。ハウジング24の外形は細長チューブ14の巻回形状に合わせて略円形に作られており、その4隅には自動車の床下に取り付けるための三角形のタブ(ブラケット)27とボルト穴28が設けられ、冷却器10をボルト締めで床下に取り付けられるようになっている。
かかる構造に基づき、この配管埋め込み型空冷式流体冷却器10では、冷却フィン26からの放熱により、細長チューブ14内を流れる燃料やオイル、あるいは熱媒体流体などの高温流体が空気によって効率的に冷却されるようになっている。
【0011】
図2A,Bは本発明の第2実施例による配管埋め込み型空冷式流体冷却器30の全体を表しており、図2Aは側面図、図2Bは平面図で、一部を破断して表している。この冷却器30では、アルミダイキャスト製の冷却プレート32の内部にステンレス鋼製、又は好ましくは内面にニッケル等の各種めっきを施した炭素鋼製の細長チューブ34が鋳込まれている。
図2Aに示すように、細長チューブ34は略平面上で1段に延伸し、側部を隣接するコルゲート状に屈曲配置されており、燃料は入口部分36から入って反対側の出口部分38から出ていく。
【0012】
冷却プレート32は、コルゲート状に屈曲配置された細長チューブ34のほぼ全体を受け入れるハウジング44と、ハウジング44の両面(上下面)の外側に形成された多数のひれ状の冷却フィン46とを包含している。ハウジング44の外形は細長チューブ34の外形に合わせて略四角形に作られており、その4隅には自動車の床下に取り付けるための略四角形のタブ(ブラケット)47とボルト穴48が設けられ、冷却器30をボルト締めで床下に取り付けられるようになっている。
かかる構造に基づき、この配管埋め込み型空冷式流体冷却器30では、冷却フィン46からの放熱により、細長チューブ34内を流れる燃料やオイル、あるいは熱媒体流体などの高温流体が空気によって効率的に冷却されるようになっている。
【0013】
図3A,Bと図4A,Bは本発明の第3実施例による配管埋め込み型空冷式流体冷却器50を表しており、図3A,Bは全体の外観図、図4A,Bは内部の細長チューブの形状を表している。
この冷却器50では、アルミダイキャスト製の冷却プレート52の内部にステンレス鋼製、又は好ましくは内面にニッケル等の各種めっきを施した炭素鋼製の細長チューブ54(図4)が鋳込まれている。
【0014】
冷却プレート52は、スパイラル(コイル)状に屈曲配置された細長チューブ54(図4)のほぼ全体を受け入れるハウジング64と、ハウジング64の両面(上下面)の外側に形成された多数のひれ状の冷却フィン66とを包含している。ハウジング64の外形は細長チューブ54の外形に合わせて略円形に作られており、その4隅には自動車の床下に取り付けるためのタブ(ブラケット)67とボルト穴68が設けられ、冷却器50をボルト締めで床下に取り付けられるようになっている。ハウジング64の上面には細長チューブ54の一部を覆うための案内カバー57(図3)が設けられている。
【0015】
図3及び図4に示すように、細長チューブ54はその入口部分56からハウジング64内に入った部分で案内カバー57に覆われて内部へと延伸し、下側の平面へと伸びている。従って、細長チューブ54は略平面上で2段に延伸し、渦巻形のスパイラル(コイル)状に屈曲配置されており、燃料は入口部分56から入って隣接する出口部分58から出ていく。
かかる構造に基づき、この配管埋め込み型空冷式流体冷却器50では、冷却フィン66からの放熱により、細長チューブ54内を流れる燃料やオイル、あるいは熱媒体流体などの高温流体が空気によって効率的に冷却されるようになっている。
【0016】
図5A〜Cは本発明の第4実施例による配管埋め込み型空冷式流体冷却器70を表しており、一部を破断した状態で図示している。図5Aは側面図、図5Bは平面図、図5Cは図5Bの線C−Cに沿う断面図である。この流体冷却器70では、アルミダイキャスト製の冷却プレート72の内部にステンレス鋼製、又は好ましくは内面にニッケル等の各種めっきを施した炭素鋼製の細長チューブ74が鋳込まれている。
図5B,Cに示すように、細長チューブ74は略平面上で1段に延伸し、略S字状に屈曲配置されており、燃料は入口部分76から入って反対側の出口部分78から出ていく。
【0017】
冷却プレート72は、略S字状に屈曲配置された細長チューブ74のほぼ全体を受け入れるハウジング84と、ハウジング84の両面(上下面)の外側に形成された多数のひれ状の冷却フィン86とを包含している。ハウジング84の外形は細長チューブ74の外形に合わせて略四角形に作られており、その両端には自動車の床下に取り付けるための略四角形のタブ(ブラケット)87とボルト穴88が設けられ、冷却器70をボルト締めで床下に取り付けられるようになっている。
かかる構造に基づき、この配管埋め込み型空冷式流体冷却器70では、冷却フィン86からの放熱により、細長チューブ74内を流れる燃料やオイル、あるいは熱媒体流体などの高温流体が空気によって効率的に冷却されるようになっている。
【0018】
【発明の効果】
以上詳細に説明した如く、本発明によれば、強固なアルミダイキャスト製の冷却プレートで内部の細長チューブが保護されているので、細長チューブが破損する可能性が激減し充分な耐久性が得られる。細長チューブはステンレス鋼製又は好ましくは内面にニッケル等の各種めっきを施した炭素鋼製なので、燃料による腐食に耐えることができる。細長チューブは略平面上で1段又は複数段にわたりスパイラル状・コルゲート状・コイル状あるいはS字状などに屈曲配置され、冷却プレート内に鋳込まれているので、冷却プレートと緊密に接触して熱を伝達することができる。冷却プレートにはその片面又は両面の外側に多数のひれ状の冷却フィンが設けられているので、車外の空気に直接触れて熱を放散することができる。かくして、冷却フィンの放熱により細長チューブ内を流れる燃料やオイルあるいは熱媒体流体などの高温流体を効率的に冷却することができて、燃料高温化による大気汚染や燃料臭を防止できる等、その技術的効果には極めて顕著なものがある。
【図面の簡単な説明】
【図1】本発明の第1実施例による流体冷却器全体の平面図と側面図である。
【図2】本発明の第2実施例による流体冷却器全体の側面図と平面図である。
【図3】本発明の第3実施例による流体冷却器全体の平面図と側面図である。
【図4】図3の実施例における細長チューブを表す平面図と側面図である。
【図5】本発明の第4実施例による流体冷却器の側面図、平面図、断面図である。
【符号の説明】
10,30,50,70 流体冷却器
12,32,52,72 冷却プレート
14,34,54,74 細長チューブ
24,44,64,84 ハウジング
26,46,66,86 冷却フィン
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fuel cooler for a diesel engine and a gasoline engine, and particularly to an air-cooled fuel cooler or a heat medium fluid suitable for being placed under the floor of an automobile or the like in order to reduce the temperature of return fuel. The present invention relates to a cooler or the like in the case of performing indirect cooling by cooling.
[0002]
[Prior art]
Generally, when fuel of an internal combustion engine is heated from the fuel tank to a fuel injection device by the heat transfer from the engine and exhaust system components, and bubbles (vapor) are generated in the fuel liquid, the fuel injection device is operated. Therefore, there is a problem that the air bubbles are mixed in the fuel liquid injected into the cylinder and vapor lock occurs, the fuel injection amount per injection time decreases, and a predetermined output cannot be obtained.
On the other hand, surplus fuel not combusted by the engine is returned to the tank via the return pipe.However, the fuel is once heated to high pressure and passes near the high-temperature part of the engine, and becomes high-temperature return fuel. The temperature of all the fuel inside the tank rises (approximately 60 ° C. for gasoline-powered vehicles) and is released from the tank as vapor, which may cause problems such as air pollution and fuel odor in the cabin. In a diesel engine, particularly a pressure-accumulation type fuel injection system using a common rail, the pressure is extremely high, so that the return fuel becomes high temperature (the temperature in the tank rises to 120 to 170 ° C.), which is a particular problem.
[0003]
As a countermeasure, in the case of a gasoline engine, a method of cooling a fuel supply pipe between a fuel tank and a fuel injection device with a pipe of an air conditioner (air conditioner) of an automobile to lower the fuel temperature to below the boiling point has been adopted. In the case of a diesel engine employing a pressure accumulation type fuel injection system using a common rail, at present, the fuel is not cooled at all. For this reason, in the case of a diesel engine employing a pressure accumulation type fuel injection system using a common rail, the injection of fuel becomes unstable due to vapor lock, and thermal deterioration of resin tank parts (hose etc.) and resin tanks is inevitable. There was a problem.
[0004]
In Japanese Patent Application Laid-Open No. 2001-200765 “Fuel cooling method for gasoline engine” filed by the applicant of the present application, a heat exchanger for lowering the fuel temperature below the boiling bubble generation temperature is provided in the middle of the fuel pipe. A wick material having a capillary structure is attached to the inside of the heat exchanger, and when the heat medium fluid rises in the capillary, the heat exchanger takes away heat of vaporization by evaporation to cool the fuel.
[0005]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION An object of the present invention is to provide an air-cooled fluid cooler for preventing air pollution and fuel odor due to the above-mentioned high temperature fuel in a diesel engine or a gasoline engine.
[0006]
[Means for Solving the Problems]
An object of the present invention is to provide a cooling plate made of aluminum die-cast, and an elongated tube made of stainless steel or carbon steel (preferably having an inner surface plated with nickel or the like). Spiral (spiral), corrugated (corrugated), coiled (swirl) or S-shaped bent over one or more stages on a plane, and cast into the cooling plate by aluminum die casting The cooling plate has a large number of fin-shaped cooling fins on one or both sides thereof, and the cooling plate cools a fluid such as fuel or oil flowing in the elongated tube by heat radiation of the cooling fins. This is achieved by an air-cooled fluid cooler with embedded pipes.
[0007]
[Action]
Conventionally, if such a fuel cooler (heat exchanger) is arranged under the floor, there is a possibility that the fuel will be damaged by the impact of the stepping stones and the fuel will be scattered, so that the strength problem has to be solved.
According to the present invention, since the elongated tube is cast inside the strong aluminum die-cast cooling plate, the possibility that the elongated tube is broken is drastically reduced, and sufficient durability can be obtained. Since the elongated tube is made of stainless steel or carbon steel in which various kinds of plating such as nickel are applied to the inner surface, it can withstand corrosion by fuel.
[0008]
The slender tube is bent and arranged in a spiral shape (spiral shape), corrugated shape (corrugated shape), coil shape (spiral shape) or S-shape over one or more stages on a substantially flat surface. As a result, heat is transferred in close contact with almost the entire cooling plate. Since the cooling plate is provided with a large number of fin-shaped cooling fins on one or both sides thereof, heat can be dissipated by directly touching the air outside the vehicle. In this manner, the fluid such as fuel or oil flowing in the elongated tube can be cooled by the heat radiation of the cooling fins, and the effect of preventing air pollution and fuel odor due to the high temperature of the fuel can be obtained.
The outer shape of the cooling plate can be circular, square or any other shape in accordance with the shape of the tube.
Other features and advantages of the present invention will become apparent from the following description made with reference to the accompanying drawings.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
1A and 1B show the entirety of a pipe-embedded air-cooled fluid cooler 10 according to a first embodiment of the present invention. FIG. 1A is a plan view, and FIG. 1B is a side view, partially cut away. I have. In the cooler 10, an elongated tube 14 made of stainless steel or preferably made of carbon steel with various platings such as nickel applied on the inner surface is cast inside a cooling plate 12 made of aluminum die cast.
As shown in FIG. 1B, the elongate tube 14 extends in a single step on a substantially plane and is spirally wound, and fuel enters through an inlet portion 16 and exits through a central outlet portion 18.
[0010]
The cooling plate 12 includes a housing 24 for receiving substantially the whole of the elongated tube 14 wound in a spiral shape, and a number of fin-shaped cooling fins 26 formed outside one surface (upper surface) of the housing 24. ing. The outer shape of the housing 24 is formed in a substantially circular shape in accordance with the winding shape of the elongated tube 14, and a triangular tab (bracket) 27 and a bolt hole 28 are provided at four corners for mounting under the floor of an automobile. The cooler 10 can be mounted under the floor by bolting.
Based on this structure, in the air-cooled fluid cooler 10 with embedded pipes, the heat from the cooling fins 26 allows the high-temperature fluid such as fuel, oil, or heat medium fluid flowing in the elongated tube 14 to be efficiently cooled by air. It is supposed to be.
[0011]
2A and 2B show the entirety of a pipe-embedded air-cooled fluid cooler 30 according to a second embodiment of the present invention. FIG. 2A is a side view, and FIG. I have. In this cooler 30, an elongate tube 34 made of stainless steel or preferably made of various kinds of plating such as nickel is cast on the inside of a cooling plate 32 made of aluminum die cast.
As shown in FIG. 2A, the elongate tube 34 extends in a single step on a substantially flat surface, and is bent and arranged in a corrugated shape with adjacent sides, and fuel enters through an inlet portion 36 and enters through an opposite outlet portion 38. to go out.
[0012]
The cooling plate 32 includes a housing 44 that receives substantially the entire elongated tube 34 that is bent and arranged in a corrugated manner, and a number of fin-shaped cooling fins 46 that are formed outside both surfaces (upper and lower surfaces) of the housing 44. ing. The outer shape of the housing 44 is formed in a substantially square shape in accordance with the outer shape of the elongated tube 34, and a substantially square tab (bracket) 47 and a bolt hole 48 are provided at four corners for mounting under the floor of an automobile. The container 30 can be mounted under the floor by bolting.
Based on this structure, the pipe-embedded air-cooled fluid cooler 30 efficiently cools a high-temperature fluid such as a fuel, oil, or a heat medium fluid flowing in the elongated tube 34 by air by radiating heat from the cooling fins 46. It is supposed to be.
[0013]
FIGS. 3A and 3B and FIGS. 4A and 4B show a pipe-embedded air-cooled fluid cooler 50 according to a third embodiment of the present invention. FIGS. 3A and 3B are external views of the whole, and FIGS. Shows the shape of the tube.
In this cooler 50, an elongate tube 54 (FIG. 4) made of stainless steel, or preferably made of various platings such as nickel on the inner surface, is cast into a cooling plate 52 made of aluminum die cast. I have.
[0014]
The cooling plate 52 includes a housing 64 that receives substantially the entire elongated tube 54 (FIG. 4) bent and arranged in a spiral (coil) shape, and a plurality of fin-shaped members formed on both sides (upper and lower surfaces) of the housing 64. And cooling fins 66. The outer shape of the housing 64 is formed in a substantially circular shape in accordance with the outer shape of the elongated tube 54, and tabs (brackets) 67 and bolt holes 68 are provided at four corners for mounting under the floor of the automobile. It can be installed under the floor with bolts. A guide cover 57 (FIG. 3) for covering a part of the elongated tube 54 is provided on the upper surface of the housing 64.
[0015]
As shown in FIGS. 3 and 4, the elongate tube 54 extends from the entrance portion 56 into the housing 64 by being covered by the guide cover 57 at the portion that enters the housing 64, and extends to the lower plane. Accordingly, the elongated tube 54 extends in two steps on a substantially plane, is bent and arranged in a spiral shape (coil), and the fuel enters the inlet portion 56 and exits from the adjacent outlet portion 58.
Based on this structure, the pipe embedded type air-cooled fluid cooler 50 efficiently cools a high-temperature fluid such as fuel, oil, or a heat medium fluid flowing in the elongated tube 54 by air due to heat radiation from the cooling fins 66. It is supposed to be.
[0016]
FIGS. 5A to 5C show a pipe-embedded air-cooled fluid cooler 70 according to a fourth embodiment of the present invention, which is partially cut away. 5A is a side view, FIG. 5B is a plan view, and FIG. 5C is a cross-sectional view taken along line CC of FIG. 5B. In this fluid cooler 70, an elongate tube 74 made of stainless steel or, preferably, carbon steel with various platings such as nickel on the inner surface is cast inside a cooling plate 72 made of aluminum die cast.
As shown in FIGS. 5B and 5C, the elongated tube 74 extends in one step on a substantially plane and is arranged in a bent shape in a substantially S-shape. The fuel enters from the inlet portion 76 and exits from the outlet portion 78 on the opposite side. To go.
[0017]
The cooling plate 72 includes a housing 84 that receives substantially the entirety of the elongated tube 74 that is bent and arranged in a substantially S-shape, and a number of fin-shaped cooling fins 86 formed outside both surfaces (upper and lower surfaces) of the housing 84. Inclusive. The outer shape of the housing 84 is formed in a substantially square shape in accordance with the outer shape of the elongated tube 74, and a substantially square tab (bracket) 87 and a bolt hole 88 are provided at both ends for mounting under the floor of an automobile. 70 can be mounted under the floor by bolting.
Based on this structure, the pipe-embedded air-cooled fluid cooler 70 efficiently cools a high-temperature fluid such as fuel, oil, or a heat medium fluid flowing in the elongated tube 74 by air by radiating heat from the cooling fins 86. It is supposed to be.
[0018]
【The invention's effect】
As described in detail above, according to the present invention, since the internal elongated tube is protected by the strong aluminum die-cast cooling plate, the possibility of the elongated tube being damaged is drastically reduced, and sufficient durability is obtained. Can be The elongated tube is made of stainless steel or, preferably, carbon steel whose inner surface is plated with nickel or the like, so that it can withstand corrosion by fuel. The elongated tube is bent and arranged in a spiral, corrugated, coiled, or S-shape over one or more stages on a substantially flat surface, and is cast into the cooling plate. Can transfer heat. Since the cooling plate is provided with a large number of fin-shaped cooling fins on one or both sides thereof, heat can be dissipated by directly touching the air outside the vehicle. In this way, the heat radiation of the cooling fins can efficiently cool the high-temperature fluid such as fuel or oil or heat medium fluid flowing in the elongated tube, thereby preventing air pollution and fuel odor due to the high temperature of the fuel. Some of the effects are quite significant.
[Brief description of the drawings]
FIG. 1 is a plan view and a side view of an entire fluid cooler according to a first embodiment of the present invention.
FIG. 2 is a side view and a plan view of an entire fluid cooler according to a second embodiment of the present invention.
FIG. 3 is a plan view and a side view of an entire fluid cooler according to a third embodiment of the present invention.
FIG. 4 is a plan view and a side view showing an elongated tube in the embodiment of FIG. 3;
FIG. 5 is a side view, a plan view, and a sectional view of a fluid cooler according to a fourth embodiment of the present invention.
[Explanation of symbols]
10, 30, 50, 70 Fluid coolers 12, 32, 52, 72 Cooling plates 14, 34, 54, 74 Elongated tubes 24, 44, 64, 84 Housings 26, 46, 66, 86 Cooling fins

Claims (1)

アルミダイキャスト製の冷却プレートと、ステンレス鋼製又は炭素鋼製の細長チューブとを備え、
前記細長チューブは略平面上で1段又は複数段にわたりスパイラル状・コルゲート状・コイル状あるいはS字状などに屈曲配置され、アルミダイキャスト加工により前記冷却プレート内に鋳込まれており、
前記冷却プレートはその片面又は両面の外側に多数のひれ状の冷却フィンを有しており、
前記冷却フィンの放熱により細長チューブ内を流れる流体を冷却するようになっていることを特徴とする配管埋め込み型空冷式流体冷却器。
Equipped with an aluminum die-cast cooling plate and an elongated tube made of stainless steel or carbon steel,
The elongated tube is bent and arranged in a spiral shape, a corrugated shape, a coil shape or an S shape over one or more stages on a substantially plane, and is cast into the cooling plate by aluminum die casting,
The cooling plate has a number of fin-shaped cooling fins on one or both sides thereof,
An air-cooled fluid cooler with embedded pipes, characterized in that the fluid flowing through the elongated tube is cooled by the heat radiation of the cooling fins.
JP2002186998A 2002-06-27 2002-06-27 Air-cooled type fluid cooler buried in piping Pending JP2004027988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002186998A JP2004027988A (en) 2002-06-27 2002-06-27 Air-cooled type fluid cooler buried in piping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002186998A JP2004027988A (en) 2002-06-27 2002-06-27 Air-cooled type fluid cooler buried in piping

Publications (1)

Publication Number Publication Date
JP2004027988A true JP2004027988A (en) 2004-01-29

Family

ID=31182164

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002186998A Pending JP2004027988A (en) 2002-06-27 2002-06-27 Air-cooled type fluid cooler buried in piping

Country Status (1)

Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005321139A (en) * 2004-05-07 2005-11-17 Toyota Motor Corp Fuel cooling device
EP2620239A1 (en) * 2012-01-24 2013-07-31 Cooler Master Co., Ltd. Heat-dissipating module and method for manufacturing the same
WO2018049452A1 (en) * 2016-09-13 2018-03-22 Josef Höller Gmbh Cooling and heating plate
US10807723B2 (en) * 2018-11-02 2020-10-20 The Boeing Company Integrated liquid heat exchanger and outflow valve systems and methods

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005321139A (en) * 2004-05-07 2005-11-17 Toyota Motor Corp Fuel cooling device
EP2620239A1 (en) * 2012-01-24 2013-07-31 Cooler Master Co., Ltd. Heat-dissipating module and method for manufacturing the same
WO2018049452A1 (en) * 2016-09-13 2018-03-22 Josef Höller Gmbh Cooling and heating plate
CN109963484A (en) * 2016-09-13 2019-07-02 约瑟夫·霍勒有限公司 Cooling heating plate
RU2763282C2 (en) * 2016-09-13 2021-12-28 Йозеф Хёллер Гмбх Cooling and heating plate
US10807723B2 (en) * 2018-11-02 2020-10-20 The Boeing Company Integrated liquid heat exchanger and outflow valve systems and methods

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