JP3621685B2 - Inner surface induction heating coil - Google Patents

Inner surface induction heating coil Download PDF

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Publication number
JP3621685B2
JP3621685B2 JP2002054057A JP2002054057A JP3621685B2 JP 3621685 B2 JP3621685 B2 JP 3621685B2 JP 2002054057 A JP2002054057 A JP 2002054057A JP 2002054057 A JP2002054057 A JP 2002054057A JP 3621685 B2 JP3621685 B2 JP 3621685B2
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inner diameter
induction heating
heating coil
diameter surface
conductor
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JP2003257611A (en
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栄 山内
始 冨田
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SPC Electronics Corp
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SPC Electronics Corp
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Priority to JP2002054057A priority Critical patent/JP3621685B2/en
Priority to CNB038048159A priority patent/CN100459818C/en
Priority to KR1020047013475A priority patent/KR100726412B1/en
Priority to PCT/JP2003/002191 priority patent/WO2003073796A1/en
Publication of JP2003257611A publication Critical patent/JP2003257611A/en
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Priority to HK05110103.8A priority patent/HK1078235A1/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/38—Coil arrangements specially adapted for fitting into hollow spaces of workpieces
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、内径面誘導加熱コイルに関し、さらに詳細には、円筒状などの筒状形状を備えた物体の該筒状形状部位において、該筒状形状部位の軸方向を中心とした内径側（内側）に位置する面である内径面（内周面）を誘導加熱することにより、焼き嵌めや焼き入れを行う際に用いて好適な内径面誘導加熱コイルに関し、特に、回転機器用のローターの焼き嵌めや、穴の開いた部品の焼き入れなどに用いて好適な内径面誘導加熱コイルに関する。
【０００２】
【従来の技術】
従来より、部材に形成された穴などの筒状形状部位の軸方向を中心とした内径側（内側）に位置する面である内径面（内周面）（以下、単に「内径面」と適宜に称する。）を誘導加熱することができるようにして、焼き嵌めや焼き入れを行う際に用いることが可能な内径面誘導加熱コイルが知られている。
【０００３】
図１乃至図２には、上記したような従来の内径面誘導加熱コイルの一例が示されている。ここで、図１は従来の内径面誘導加熱コイルの一部を破断して示した概念構成説明図であり、図２はパイプ状加熱コイル（後述する。）の概略構成斜視図である。
【０００４】
この従来の内径面誘導加熱コイル１００は、パイプ形状を備えた導体（例えば、銅などの金属である。）をコイル状に巻回して成形したパイプ状加熱コイル１０２と、パイプ状加熱コイル１０２に高周波電流を印加するための高周波電流源１０４と、パイプ状加熱コイル１０２の一方の端部１０２ａと高周波電流源１０４とを電気的に接続する線路１０６と、パイプ状加熱コイル１０２の他方の端部１０２ｂと高周波電流源１０４とを電気的に接続する線路１０８とを有して構成されている。
【０００５】
さらに、パイプ状加熱コイル１０２の内部、即ち、パイプ状加熱コイル１０２を形成するパイプ内を、冷却水が流れるように構成されている。
【０００６】
以上の構成において、内径面誘導加熱コイル１００により筒状部位として穴１１０ａを形成された被加熱物１１０の内径面１１０ａａを誘導加熱するには、図１に示すように、被加熱物１１０に形成された穴１１０ａ内にパイプ状加熱コイル１０２を挿入し、高周波電流源１０４により線路１０６、１０８を介してパイプ状加熱コイル１０２に高周波電流を印加する。これにより、被加熱物１１０に誘導電流を発生させ、内径面１１０ａａを誘導加熱する。
【０００７】
ここで、パイプ状加熱コイル１０２に高周波電流を印加することにより当該パイプ状加熱コイル１０２に発生した熱は、パイプ状加熱コイル１０２の内部を流れる冷却水で冷却するようになされている。
【０００８】
ところで、パイプ状加熱コイル１０２に流れる高周波電流は、パイプ状加熱コイル１０２の外側（外径側）よりも内側（内径側）に多く流れることになる。このため、従来の内径面誘導加熱コイル１００においては、電流が多く流れているパイプ状加熱コイル１０２の部位と被加熱部位である内径面１１０ａａとの間の距離ｄが大きくなり、被加熱部位である内径面１１０ａａに対する加熱効率が良くないという問題点があった。
【０００９】
また、従来の内径面誘導加熱コイル１００により内径面１１０ａａを加熱する際には、被加熱物１１０の穴１１０ａ内にパイプ状加熱コイル１０２を挿入するため、穴１１０ａの径が小さい場合には、パイプ状加熱コイル１０２を形成するパイプの内径も小さくする必要がある。ところが、パイプ状加熱コイル１０２を形成するパイプの内径を細くすると、パイプ状加熱コイル１０２の内部に冷却水を大量に流すことができなくなって、パイプ状加熱コイル１０２を十分に冷却することが困難となり、ひいてはパイプ状加熱コイル１０２に大容量の電流を印加することができなくなるという問題点があった。
【００１０】
【発明が解決しようとする課題】
本発明は、上記したような従来の技術の有する問題点に鑑みてなされたものであり、その目的とするところは、加熱効率を向上させ、被加熱物に形成された穴などの筒状形状部位の内径側を効率良く加熱することができるようにした内径面誘導加熱コイルを提供しようとするものである。
【００１１】
また、本発明の目的とするところは、大容量の電流を印加して大出力で加熱することを可能にして、被加熱物に形成された穴などの筒状形状部位の内径側を従来よりも大きな出力で加熱することができるようにした内径面誘導加熱コイルを提供しようとするものである。
【００１２】
【課題を解決するための手段】
上記目的を達成するために、本発明のうち請求項１に記載の発明は、部材に形成された筒状形状部位の軸方向を中心とした内径側に位置する面である内径面を誘導加熱する内径面誘導加熱コイルにおいて、絶縁体により形成された中空のケースと、上記ケースの内部に配設された薄板状の導体よりなり高周波電流を印加される加熱部材とを有し、上記加熱部材を配設した上記ケースの内部に冷却水を供給するようにしたものである。
【００１３】
従って、本発明のうち請求項１に記載の発明によれば、加熱部材を配設した上記ケースの内部に冷却水を大量に供給することができるので、大量の冷却水によって効率よく冷却することができる。従って、従来の内径面誘導加熱コイルと比較すると、より多くの高周波電流を加熱部材に流すことが可能になり、大容量の電流を印加して大出力で加熱することでき、被加熱物に形成された穴などの筒状形状部位の内径側を従来よりも大きな出力で加熱することができるようになる。
【００１４】
また、本発明のうち請求項２に記載の発明は、部材に形成された筒状形状部位の軸方向を中心とした内径側に位置する面である内径面を誘導加熱する内径面誘導加熱コイルにおいて、絶縁体により形成された中空のケースと、上記ケースの内部に配設された薄板状の導体よりなり高周波電流を印加される加熱部材とを有し、上記ケースは、板状部の略中央部位に内径側突出部が形成された絶縁体よりなるベース部材と、大径の膨出部と細径の外径側突出部とを備えた絶縁体よりなる中空のカバー部材とよりなるようにしたものである。
【００１５】
従って、本発明のうち請求項２に記載の発明によれば、電流が多く流れている加熱部材の部位と被加熱部位との間の距離ｄを、パイプ状加熱コイルを用いた従来の内径面誘導加熱コイルと比較すると著しく小さくすることができるので、被加熱部位に対する加熱効率を著しく向上することができる。従って、本発明のうち請求項２に記載の発明によれば、被加熱物に形成された穴などの筒状形状部位の内径側を、効率良く加熱することができるようになる。
【００１６】
また、本発明のうち請求項３に記載の発明は、本発明のうち請求項１に記載の発明において、上記ケースは、板状部の略中央部位に内径側突出部が形成された絶縁体よりなるベース部材と、大径の膨出部と細径の外径側突出部とを備えた絶縁体よりなる中空のカバー部材とよりなるようにしたものである。
【００１７】
また、本発明のうち請求項４に記載の発明は、本発明のうち請求項２に記載の発明において、さらに、上記加熱部材の内径側の略中心に位置する中心導体としてパイプ形状を備えた導体を有し、上記導体は軸方向に延長するスリットを形成されるようにしたものである。
【００１８】
また、本発明のうち請求項５に記載の発明は、本発明のうち請求項１または請求項３のいずれか１項に記載の発明において、さらに、上記加熱部材の内径側の略中心に位置する中心導体としてパイプ形状を備えた導体を有し、上記導体は軸方向に延長するスリットを形成されるようにしたものである。
【００１９】
また、本発明のうち請求項６に記載の発明は、本発明のうち請求項２または請求項４のいずれか１項に記載の発明において、上記加熱部材は、コイル状に巻回して成形してなるようにしたものである。
【００２０】
また、本発明のうち請求項７に記載の発明は、本発明のうち請求項１、請求項３または請求項５のいずれか１項に記載の発明において、上記加熱部材は、コイル状に巻回して成形してなるようにしたものである。
【００２１】
また、本発明のうち請求項８に記載の発明は、本発明のうち請求項２または請求項４のいずれか１項に記載の発明において、上記加熱部材は、部材に形成された筒状形状部位の軸方向に延長する延長部を形成するようにして巻回して成形してなるようにしたものである。
【００２２】
また、本発明のうち請求項９に記載の発明は、本発明のうち請求項１、請求項３または請求項５のいずれか１項に記載の発明において、上記加熱部材は、部材に形成された筒状形状部位の軸方向に延長する延長部を形成するようにして巻回して成形してなるようにしたものである。
【００２３】
また、本発明のうち請求項１０に記載の発明は、部材に形成された筒状形状部位の軸方向を中心とした内径側に位置する面である内径面を誘導加熱する内径面誘導加熱コイルにおいて、絶縁体により形成された中空のケースと、上記ケースの内部に配設された導体よりなり高周波電流を印加される加熱部材とを有し、上記ケースは、板状部の略中央部位に内径側突出部が形成された絶縁体よりなるベース部材と、大径の膨出部と細径の外径側突出部とを備えた絶縁体よりなる中空のカバー部材とよりなり、上記加熱部材を配設した上記ケースの内部に冷却水を供給するようにしたものである。
【００２４】
また、本発明のうち請求項１１に記載の発明は、部材に形成された筒状形状部位の軸方向を中心とした内径側に位置する面である内径面を誘導加熱する内径面誘導加熱コイルにおいて、絶縁体により形成された中空のケースと、上記ケースの内部に配設された薄板状の導体よりなり高周波電流を印加される加熱部材と、上記加熱部材の内径側の略中心に位置する中心導体としてパイプ形状を備えた導体とを有し、上記導体は軸方向に延長するスリットを形成されるようにしたものである。
また、本発明のうち請求項１２に記載の発明は、部材に形成された筒状形状部位の軸方向を中心とした内径側に位置する面である内径面を誘導加熱する内径面誘導加熱コイルにおいて、絶縁体により形成された中空のケースと、上記ケースの内部に配設された導体よりなり高周波電流を印加される加熱部材と、上記加熱部材の内径側の略中心に位置する中心導体としてパイプ形状を備えた導体とを有し、上記導体は軸方向に延長するスリットを形成され、上記加熱部材を配設した上記ケースの内部に冷却水を供給するようにしたものである。
【００２５】
【発明の実施の形態】
以下、添付の図面に基づいて、本発明による内径面誘導加熱コイルの実施の形態の一例を詳細に説明するものとする。
【００２６】
図３には、本発明による内径面誘導加熱コイルの実施の形態の一例の一部を破断して示した概念構成説明図が示されている。
【００２７】
この本発明による内径面誘導加熱コイル１０は、絶縁体（例えば、プラスチックなどである。）よりなる中空のケース１２と、ケース１２の内部に配設された導体（例えば、銅などの金属である。）よりなる加熱部材１４と、ケース１２に挿通されたパイプ形状の導体（例えば、銅などの金属である。）よりなる第１導体パイプ１６と、ケース１２に挿通されたパイプ形状の導体（例えば、銅などの金属である。）よりなる第２導体パイプ１８と、加熱部材１４に高周波電流を印加するための高周波電流源２０と、加熱部材１４と第１導体パイプ１６とを電気的に接続する線路２２と、加熱部材１４と第２導体パイプ１８とを電気的に接続する線路２４と、第１導体パイプ１６と高周波電流源２０とを電気的に接続する線路２６と、第２導体パイプ１８と高周波電流源２０とを電気的に接続する線路２８とを有して構成されている。
【００２８】
なお、符号３０、３２はベース部材１２−１（後述する。）とカバー部材１２−２（後述する。）とを緊密に結合するボルトであり、符号３４はベース部材１２−１とカバー部材１２−２との間を水密に保持するＯリングであり、符号３６はベース部材１２−１と第１導体パイプ１６との間を水密に保持するＯリングであり、符号３８はベース部材１２−１と第２導体パイプ１８との間を水密に保持するＯリングである。
【００２９】
ここで、ケース１２は、板状部１２−１ａの略中央部位に内径側突出部１２−１ｂが形成された絶縁体よりなるベース部材１２−１と、大径の膨出部１２−２ａと細径の外径側突出部１２−２ｂとを備えた絶縁体よりなる中空のカバー部材１２−２とより構成されている。即ち、ケース１２は、ベース部材１２−１とカバー部材１２−２とに２分割可能である。
【００３０】
こうしたベース部材１２−１とカバー部材１２−２とは、ベース部材１２−１の内径側突出部１２−１ｂをカバー部材１２−２の外径側突出部１２−２ｂにより被覆するように配置して、ボルト３０、３２により両者を緊密に固定してケース１２を構成した際に、内径側突出部１２−１ｂと膨出部１２−２ａとの間に所定の空間Ａが形成されるとともに、内径側突出部１２−１ｂと外径側突出部１２−２ｂとの間に空間Ａよりも狭い所定の空間Ｂが形成されるように寸法設定されている。
【００３１】
また、ベース部材１２−１とカバー部材１２−２と間にはＯリング３４が配設されていて、ボルト３０、３２によりベース部材１２−１とカバー部材１２−２とを緊密に固定してケース１２を構成した際に、ベース部材１２−１とカバー部材１２−２との間が水密に保持されるようになされている。
【００３２】
そして、ボルト３０、３２によりベース部材１２−１とカバー部材１２−２とを緊密に固定してケース１２を構成した際に形成される空間Ｂ内においては、カバー部材１２−２の外径側突出部１２−２ｂの内側面１２−２ｂｂに、加熱部材１４が配設されている。この加熱部材１４は、薄板状の導体をコイル状に巻回して成形してなるものであり、図２に示す従来のパイプ状加熱コイル１０２と同様な形状に形成されている。
【００３３】
上記したように、本発明による加熱部材１４は薄板状の形状であるので、高周波電流源２０により印加された高周波電流が加熱部材１４に流れる際に、電流が多く流れる内側（内径側）の部位と被加熱部位である内径面４０ａａ（後述する。）との間の距離ｄを、従来のパイプ状加熱コイル１０２の場合と比較すると著しく小さくすることができる。
【００３４】
また、ベース部材１２−１の内径側突出部１２−１ｂを貫通するようにして孔１２−１ｂｂが穿設されている。この孔１２−１ｂｂ内には、加熱部材１４の内径側の略中心に位置する中心導体として第１導体パイプ１６が挿通されている。第１導体パイプ１６の一方の端部１６ａはケース１２の外部に位置し、第１導体パイプ１６の他方の端部１６ｂはケース１２の内部の空間Ｂ内に位置している。
【００３５】
一方、第２導体パイプ１８は、その一方の端部１８ａをケース１２の外部に位置し、他方の端部１８ｂをケース１２の内部の空間Ａ内に位置するようにして、ベース部材１２−１の板状部１２−１ａに挿通されている。
【００３６】
そして、第１導体パイプ１６の端部１６ｂと加熱部材１４とが線路２２により電気的に接続されており、第２導体パイプ１８の端部１８ｂと加熱部材１４とが線路２４により電気的に接続されている。
【００３７】
また、第１導体パイプ１６の端部１６ａの開口部から第１導体パイプ１６内に冷却水が供給されるようになされており、端部１６ａの開口部から第１導体パイプ１６内に供給された冷却水は、第１導体パイプ１６の端部１６ｂからケース１２の内部の空間Ｂ内に流出し、空間Ｂ内に配設された加熱部材１４を冷却する。そして、加熱部材１４を冷却した冷却水は、空間Ｂから空間Ａへと移動して、第２導体パイプ１８の端部１８ｂの開口部から第２導体パイプ１８内へ流入し、端部１８ｂの開口部から第２導体パイプ１８内に供給された冷却水は、第２導体パイプ１８の端部１８ｂからケース１２の外部へと流出する。
【００３８】
以上の構成において、本発明による内径面誘導加熱コイル１０により筒状部位として穴４０ａを形成された被加熱物４０の内径面４０ａａを誘導加熱するには、図３に示すように、被加熱物４０に形成された穴４０ａ内に外径側突出部１２−２ｂを挿入し、高周波電流源２０により線路２２、２４、２６、２８、第１導体パイプ１６および第２導体パイプ１６を介して加熱部材１４に高周波電流を印加する。これにより、被加熱物４０に誘導電流を発生させ、内径面４０ａａを誘導加熱する。
【００３９】
この際に、加熱部材１４に流れる高周波電流は、加熱部材１４の外側（外径側）よりも内側（内径側）に多く流れることになる。本発明による内径面誘導加熱コイル１０においては、電流が多く流れている加熱部材１４の部位と被加熱部位である内径面４０ａａとの間の距離ｄを、パイプ状加熱コイルを用いた従来の内径面誘導加熱コイルと比較すると著しく小さくすることができるので、被加熱部位である内径面４０ａａに対する加熱効率を著しく向上することができる。従って、本発明による内径面誘導加熱コイル１０によれば、被加熱物に形成された穴などの筒状形状部位の内径側を、効率良く加熱することができるようになる。
【００４０】
また、加熱部材１４は、絶縁体であるベース部材１２−１とカバー部材１２−２とより構成されたケース１２内の空間Ａ、Ｂ内を流れる大量の冷却水によって効率よく冷却される。従って、従来の内径面誘導加熱コイルと比較すると、より多くの高周波電流を加熱部材１４に流すことが可能になり、大容量の電流を印加して大出力で加熱することでき、被加熱物に形成された穴などの筒状形状部位の内径側を従来よりも大きな出力で加熱することができるようになる。
【００４１】
このため、 コンプレッサロータの焼き嵌め用加熱において、本発明による内径面誘導加熱コイル１０を利用することにより、加熱効率を２０〜３０％向上することができ、また、従来の２〜３倍の高周波電流を流すことが可能になった。
【００４２】
このことにより、ローターの焼き嵌めを短時間で、かつ、高効率で行うことが可能になった。
【００４３】
図４には、中心導体として作用する第１導体パイプ１６の他の実施の形態が示されている。なお、図４においては、第１導体パイプ１６を中心とした要部のみを概念的に示しており、図３に示す構成と同一の構成には、図３と共通の符号を用いて示している。
【００４４】
この図４に示す第１導体パイプ１６は、端部１６ｂから軸方向に沿ってスリット１６ｃが形成されている点において、図３に示す第１導体パイプ１６と異なっている。図４に示す第１導体パイプ１６においては、このスリット１６ｃにより、内径面誘導加熱コイル１０自身で中心導体たる第１導体パイプ１６を誘導加熱する作用が防止されるので、被加熱物の加熱効率を一層向上させることができる。
【００４５】
図５には、加熱部材１４の他の実施の形態が示されている。なお、図５においては、加熱部材１４を中心とした要部のみを概念的に示しており、図３に示す構成と同一の構成には、図３と共通の符号を用いて示している。
【００４６】
この図５に示す加熱部材１４は、被加熱物４０の穴４０ａの軸方向Ｃ、即ち、被加熱部４０に形成された筒状形状部位たる穴４０ａの軸方向に延長する延長部１４ａを形成するようにして巻回されて成形されている点において、図３に示す加熱部材１４と異なっている。図５に示す加熱部材１４においては、例えば、図６に示すように被加熱物４０が穴４０ａの軸方向Ｃに延長するスリット４０ｂを備える場合に、被加熱物４０の内径面４０ａａに対して軸方向に誘導電流を流して加熱することができる。
【００４７】
【発明の効果】
本発明は、以上説明したように構成されているので、加熱効率を向上させ、被加熱物に形成された穴などの筒状形状部位の内径側を効率良く加熱することができるようになるという優れた効果を奏する。
【００４８】
また、本発明は、以上説明したように構成されているので、大容量の電流を印加して大出力で加熱することを可能にして、被加熱物に形成された穴などの筒状形状部位の内径側を従来よりも大きな出力で加熱することができるようになるという優れた効果を奏する。
【図面の簡単な説明】
【図１】従来の内径面誘導加熱コイルの一部を破断して示した概念構成説明図である。
【図２】パイプ状加熱コイルの概略構成斜視図である。
【図３】本発明による内径面誘導加熱コイルの実施の形態の一例の一部を破断して示した概念構成説明図である。
【図４】中心導体として作用する第１導体パイプの他の実施の形態を示し、第１導体パイプを中心とした要部のみを概念的に示している。
【図５】加熱部材の他の実施の形態を示し、加熱部材を中心とした要部のみを概念的に示している。
【図６】穴の軸方向に延長するスリットを備えた被加熱物の一例を示す斜視図である。
【符号の説明】
１０ 内径面誘導加熱コイル
１２ ケース
１２−１ ベース部材
１２−１ａ 板状部
１２−１ｂ 内径側突出部
１２−１ｂｂ 孔
１２−２ カバー部材
１２−２ａ 膨出部
１２−２ｂ 外径側突出部
１２−２ｂｂ 内側面
１４ 加熱部材
１６ 第１導体パイプ
１６ａ、１６ｂ 端部
１６ｃ スリット
１８ 第２導体パイプ
１８ａ、１８ｂ 端部
２０ 高周波電流源
２２、２４、２６、２８ 線路
３０、３２ ボルト
３４、３６、３８ Ｏリング
４０ 被加熱物
４０ａ 穴
４０ａａ 内径面
４０ｂ スリット
Ａ、Ｂ 空間
Ｃ 被加熱物の穴の軸方向
１００ 内径面誘導加熱コイル
１０２ パイプ状加熱コイル
１０２ａ、１０２ｂ 端部
１０４ 高周波電流源
１０６、１０８ 線路
１１０ 被加熱物
１１０ａ 穴
１１０ａａ 内径面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an inner diameter surface induction heating coil, and more specifically, in the cylindrical portion of an object having a cylindrical shape such as a cylindrical shape, the inner diameter side (centering on the axial direction of the cylindrical portion) ( An inner diameter surface (inner circumferential surface), which is a surface located on the inner side, is induction-heated to induce an inner diameter surface induction heating coil suitable for quenching and quenching. The present invention relates to an inner diameter surface induction heating coil suitable for use in shrink fitting or quenching of a holed part.
[0002]
[Prior art]
Conventionally, an inner diameter surface (inner circumferential surface) (hereinafter simply referred to as an “inner diameter surface” as appropriate) is a surface located on the inner diameter side (inner side) with respect to the axial direction of a cylindrical portion such as a hole formed in a member. An inner diameter surface induction heating coil that can be used for shrink fitting and quenching is known.
[0003]
FIGS. 1 and 2 show an example of the conventional inner surface induction heating coil as described above. Here, FIG. 1 is an explanatory diagram of a conceptual configuration in which a part of a conventional inner diameter surface induction heating coil is broken, and FIG. 2 is a schematic configuration perspective view of a pipe-shaped heating coil (described later).
[0004]
The conventional inner surface induction heating coil 100 includes a pipe-shaped heating coil 102 formed by winding a conductor having a pipe shape (for example, a metal such as copper) into a coil shape, and a pipe-shaped heating coil 102. A high-frequency current source 104 for applying a high-frequency current, a line 106 that electrically connects one end 102 a of the pipe-shaped heating coil 102 and the high-frequency current source 104, and the other end of the pipe-shaped heating coil 102 102b and a line 108 that electrically connects the high-frequency current source 104 to each other.
[0005]
Further, the cooling water is configured to flow inside the pipe-shaped heating coil 102, that is, the pipe forming the pipe-shaped heating coil 102.
[0006]
In the above configuration, in order to induction-heat the inner diameter surface 110aa of the heated object 110 in which the hole 110a is formed as a cylindrical portion by the inner diameter surface induction heating coil 100, as shown in FIG. The pipe-shaped heating coil 102 is inserted into the hole 110a, and a high-frequency current is applied to the pipe-shaped heating coil 102 via the lines 106 and 108 by the high-frequency current source 104. Thereby, an induction current is generated in the object to be heated 110, and the inner diameter surface 110aa is induction-heated.
[0007]
Here, the heat generated in the pipe-shaped heating coil 102 by applying a high-frequency current to the pipe-shaped heating coil 102 is cooled by cooling water flowing inside the pipe-shaped heating coil 102.
[0008]
By the way, the high-frequency current flowing through the pipe-shaped heating coil 102 flows more to the inside (inner diameter side) than the outer side (outer diameter side) of the pipe-shaped heating coil 102. For this reason, in the conventional inner diameter surface induction heating coil 100, the distance d between the portion of the pipe-shaped heating coil 102 where a large amount of current flows and the inner diameter surface 110aa which is the heated portion is increased, and the heated portion There was a problem that the heating efficiency with respect to a certain inner diameter surface 110aa was not good.
[0009]
Further, when the inner diameter surface 110aa is heated by the conventional inner diameter surface induction heating coil 100, the pipe-shaped heating coil 102 is inserted into the hole 110a of the article 110 to be heated, and therefore when the diameter of the hole 110a is small, It is also necessary to reduce the inner diameter of the pipe forming the pipe-shaped heating coil 102. However, if the inner diameter of the pipe forming the pipe-shaped heating coil 102 is reduced, a large amount of cooling water cannot be allowed to flow inside the pipe-shaped heating coil 102, and it is difficult to sufficiently cool the pipe-shaped heating coil 102. As a result, there is a problem that a large amount of current cannot be applied to the pipe-shaped heating coil 102.
[0010]
[Problems to be solved by the invention]
The present invention has been made in view of the problems of the prior art as described above, and its object is to improve the heating efficiency and to form a cylindrical shape such as a hole formed in an object to be heated. It is an object of the present invention to provide an inner diameter surface induction heating coil capable of efficiently heating the inner diameter side of a part.
[0011]
In addition, the object of the present invention is to enable heating with a large output by applying a large amount of current, and the inner diameter side of a cylindrical portion such as a hole formed in the object to be heated is conventionally compared. The present invention is also intended to provide an inner surface induction heating coil that can be heated with a large output.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present invention is an induction heating of an inner diameter surface which is a surface located on an inner diameter side centering on an axial direction of a cylindrical portion formed in a member. An inner diameter surface induction heating coil having a hollow case formed of an insulator and a heating member to which a high-frequency current is applied is formed of a thin plate-like conductor disposed inside the case, and the heating member The cooling water is supplied to the inside of the case in which is disposed.
[0013]
Therefore, according to the first aspect of the present invention, a large amount of cooling water can be supplied to the inside of the case in which the heating member is disposed, so that the cooling can be efficiently performed with a large amount of cooling water. Can do. Therefore, compared to the conventional inner diameter surface induction heating coil, it becomes possible to flow more high-frequency current through the heating member, and it can be heated with a large output by applying a large amount of current and formed on the object to be heated. It becomes possible to heat the inner diameter side of the cylindrical shaped part such as the formed hole with a larger output than before.
[0014]
The invention according to claim 2 of the present invention is an inner diameter surface induction heating coil for induction heating an inner diameter surface which is a surface located on the inner diameter side with respect to the axial direction of the cylindrical portion formed in the member. In this case, a hollow case formed of an insulator, and a heating member to which a high-frequency current is applied made of a thin plate-like conductor disposed inside the case, the case being an abbreviation of a plate-like portion. A base member made of an insulator having an inner diameter side protruding portion formed in the central portion, and a hollow cover member made of an insulator having a large diameter bulging portion and a small outer diameter side protruding portion. It is a thing.
[0015]
Therefore, according to the invention described in claim 2 of the present invention, the distance d between the portion of the heating member through which a large amount of current flows and the portion to be heated is set to a conventional inner diameter surface using a pipe-shaped heating coil. Compared with the induction heating coil, it can be made significantly smaller, so that the heating efficiency for the heated part can be remarkably improved. Therefore, according to the second aspect of the present invention, the inner diameter side of the cylindrical portion such as a hole formed in the object to be heated can be efficiently heated.
[0016]
The invention according to claim 3 of the present invention is the insulator according to claim 1 of the present invention, wherein the case is an insulator in which an inner diameter side protruding portion is formed at a substantially central portion of the plate-like portion. And a hollow cover member made of an insulator having a large-diameter bulging portion and a small-diameter outer-diameter-side protruding portion.
[0017]
Further, the invention according to claim 4 of the present invention is the invention according to claim 2 of the present invention, further comprising a pipe shape as a central conductor located substantially at the center on the inner diameter side of the heating member. It has a conductor, and the conductor is formed with a slit extending in the axial direction.
[0018]
The invention according to claim 5 of the present invention is the invention according to any one of claims 1 or 3 of the present invention, and is further positioned substantially at the center on the inner diameter side of the heating member. As the central conductor, a conductor having a pipe shape is formed, and the conductor is formed with a slit extending in the axial direction.
[0019]
Further, the invention according to claim 6 of the present invention is the invention according to any one of claims 2 or 4 of the present invention, wherein the heating member is formed by winding in a coil shape. It was made to become.
[0020]
The invention according to claim 7 of the present invention is the invention according to claim 1, claim 3 or claim 5 of the present invention, wherein the heating member is wound in a coil shape. It is formed by turning.
[0021]
Moreover, invention of Claim 8 among this invention WHEREIN: In invention of any one of Claim 2 or Claim 4 among this invention, the said heating member is the cylindrical shape formed in the member. It is formed by winding and forming so as to form an extension part extending in the axial direction of the part.
[0022]
The invention according to claim 9 of the present invention is the invention according to claim 1, claim 3 or claim 5 of the present invention, wherein the heating member is formed on a member. It is formed by winding and forming so as to form an extension portion extending in the axial direction of the cylindrical portion.
[0023]
According to a tenth aspect of the present invention, there is provided an inner diameter surface induction heating coil for inductively heating an inner diameter surface, which is a surface located on the inner diameter side with respect to the axial direction of the cylindrical portion formed in the member. A hollow case formed of an insulator and a heating member to which a high-frequency current is applied, which is made of a conductor disposed inside the case, and the case is provided at a substantially central portion of the plate-like portion. The heating member comprises: a base member made of an insulator having an inner diameter side protruding portion; and a hollow cover member made of an insulator having a large diameter bulging portion and a small outer diameter side protruding portion. The cooling water is supplied to the inside of the case in which is disposed.
[0024]
In addition, the invention according to claim 11 of the present invention is an inner diameter surface induction heating coil for induction heating an inner diameter surface which is a surface located on the inner diameter side with respect to the axial direction of the cylindrical portion formed in the member. , A hollow case formed of an insulator, a heating member made of a thin plate-like conductor disposed inside the case, to which a high-frequency current is applied, and positioned substantially at the center on the inner diameter side of the heating member And a conductor having a pipe shape as a central conductor, and the conductor is formed with a slit extending in the axial direction.
According to a twelfth aspect of the present invention, an inner diameter surface induction heating coil for induction heating an inner diameter surface, which is a surface located on the inner diameter side with respect to the axial direction of the cylindrical portion formed in the member. In the above, a hollow case formed of an insulator, a heating member made of a conductor disposed inside the case, to which a high-frequency current is applied, and a central conductor located substantially at the inner diameter side of the heating member A conductor having a pipe shape, the conductor being formed with a slit extending in the axial direction, and supplying cooling water to the inside of the case where the heating member is disposed.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of an inner diameter surface induction heating coil according to the present invention will be described in detail with reference to the accompanying drawings.
[0026]
FIG. 3 is an explanatory diagram of a conceptual configuration in which a part of an embodiment of the inner diameter surface induction heating coil according to the present invention is broken.
[0027]
The inner surface induction heating coil 10 according to the present invention is a hollow case 12 made of an insulator (for example, plastic) and a conductor (for example, a metal such as copper) disposed inside the case 12. )), A first conductor pipe 16 formed of a pipe-shaped conductor (for example, a metal such as copper) inserted through the case 12, and a pipe-shaped conductor inserted through the case 12 ( For example, a second conductor pipe 18 made of a metal such as copper), a high-frequency current source 20 for applying a high-frequency current to the heating member 14, and the heating member 14 and the first conductor pipe 16 are electrically connected. A line 22 to be connected, a line 24 to electrically connect the heating member 14 and the second conductor pipe 18, a line 26 to electrically connect the first conductor pipe 16 and the high-frequency current source 20, and a second conductor It is configured to have a line 28 for electrically connecting the type 18 and the high-frequency current source 20.
[0028]
Reference numerals 30 and 32 are bolts for tightly coupling the base member 12-1 (described later) and the cover member 12-2 (described later), and reference numeral 34 indicates the base member 12-1 and the cover member 12. 2 is a water-tight O-ring, and symbol 36 is a water-tight O-ring between the base member 12-1 and the first conductor pipe 16, and symbol 38 is a base member 12-1. And an O-ring that keeps watertight between the first conductor pipe 18 and the second conductor pipe 18.
[0029]
Here, the case 12 includes a base member 12-1 made of an insulator having an inner diameter side protruding portion 12-1b formed at a substantially central portion of the plate-like portion 12-1a, and a large-diameter bulged portion 12-2a. It is comprised from the hollow cover member 12-2 which consists of an insulator provided with the thin outer diameter side protrusion part 12-2b. That is, the case 12 can be divided into a base member 12-1 and a cover member 12-2.
[0030]
The base member 12-1 and the cover member 12-2 are arranged such that the inner diameter side protruding portion 12-1b of the base member 12-1 is covered with the outer diameter side protruding portion 12-2b of the cover member 12-2. Then, when the case 12 is configured by tightly fixing both of them with the bolts 30 and 32, a predetermined space A is formed between the inner diameter side protruding portion 12-1b and the bulging portion 12-2a, The dimension is set so that a predetermined space B narrower than the space A is formed between the inner diameter side protruding portion 12-1b and the outer diameter side protruding portion 12-2b.
[0031]
Further, an O-ring 34 is disposed between the base member 12-1 and the cover member 12-2, and the base member 12-1 and the cover member 12-2 are tightly fixed by the bolts 30 and 32. When the case 12 is configured, the space between the base member 12-1 and the cover member 12-2 is kept watertight.
[0032]
And in the space B formed when the base member 12-1 and the cover member 12-2 are tightly fixed by the bolts 30 and 32 to form the case 12, the outer diameter side of the cover member 12-2 The heating member 14 is disposed on the inner surface 12-2bb of the protruding portion 12-2b. The heating member 14 is formed by winding a thin plate-like conductor into a coil shape, and is formed in the same shape as the conventional pipe-shaped heating coil 102 shown in FIG.
[0033]
As described above, since the heating member 14 according to the present invention has a thin plate shape, when the high-frequency current applied by the high-frequency current source 20 flows through the heating member 14, an inner portion (inner diameter side) through which a large amount of current flows. And the inner diameter surface 40aa (to be described later), which is a heated portion, can be made significantly smaller than the conventional pipe-shaped heating coil 102.
[0034]
Further, a hole 12-1bb is formed so as to penetrate the inner diameter side protruding portion 12-1b of the base member 12-1. The first conductor pipe 16 is inserted into the hole 12-1bb as a central conductor located at the approximate center on the inner diameter side of the heating member 14. One end 16 a of the first conductor pipe 16 is located outside the case 12, and the other end 16 b of the first conductor pipe 16 is located in the space B inside the case 12.
[0035]
On the other hand, the second conductor pipe 18 has one end portion 18a positioned outside the case 12 and the other end portion 18b positioned in the space A inside the case 12, so that the base member 12-1 is positioned. The plate-like part 12-1a is inserted.
[0036]
The end portion 16 b of the first conductor pipe 16 and the heating member 14 are electrically connected by a line 22, and the end portion 18 b of the second conductor pipe 18 and the heating member 14 are electrically connected by a line 24. Has been.
[0037]
Cooling water is supplied into the first conductor pipe 16 from the opening of the end portion 16a of the first conductor pipe 16, and is supplied into the first conductor pipe 16 from the opening portion of the end portion 16a. The cooled water flows out from the end portion 16 b of the first conductor pipe 16 into the space B inside the case 12 and cools the heating member 14 disposed in the space B. And the cooling water which cooled the heating member 14 moves to the space A from the space B, flows in into the 2nd conductor pipe 18 from the opening part of the edge part 18b of the 2nd conductor pipe 18, and reaches the edge part 18b. The cooling water supplied from the opening into the second conductor pipe 18 flows out from the end 18 b of the second conductor pipe 18 to the outside of the case 12.
[0038]
In the above configuration, in order to inductively heat the inner diameter surface 40aa of the heated object 40 in which the hole 40a is formed as a cylindrical portion by the inner diameter surface induction heating coil 10 according to the present invention, as shown in FIG. The outer-diameter protruding portion 12-2b is inserted into the hole 40a formed in 40, and heated by the high-frequency current source 20 via the lines 22, 24, 26, 28, the first conductor pipe 16 and the second conductor pipe 16. A high frequency current is applied to the member 14. Thereby, an induced current is generated in the article to be heated 40, and the inner diameter surface 40aa is induction heated.
[0039]
At this time, the high-frequency current flowing through the heating member 14 flows more on the inner side (inner diameter side) than on the outer side (outer diameter side) of the heating member 14. In the inner diameter surface induction heating coil 10 according to the present invention, the distance d between the portion of the heating member 14 where a large amount of current flows and the inner diameter surface 40aa which is a heated portion is set to a conventional inner diameter using a pipe-shaped heating coil. Compared with the surface induction heating coil, it can be remarkably reduced, so that the heating efficiency with respect to the inner diameter surface 40aa which is the heated portion can be remarkably improved. Therefore, according to the inner diameter surface induction heating coil 10 according to the present invention, the inner diameter side of the cylindrical portion such as a hole formed in the object to be heated can be efficiently heated.
[0040]
The heating member 14 is efficiently cooled by a large amount of cooling water flowing in the spaces A and B in the case 12 constituted by the base member 12-1 and the cover member 12-2, which are insulators. Therefore, as compared with the conventional inner diameter surface induction heating coil, it becomes possible to flow more high-frequency current to the heating member 14, and it is possible to apply a large-capacity current and heat it with a large output. It becomes possible to heat the inner diameter side of a cylindrical portion such as the formed hole with a larger output than before.
[0041]
For this reason, in the heat for shrink-fitting of the compressor rotor, the heating efficiency can be improved by 20 to 30% by using the inner diameter surface induction heating coil 10 according to the present invention, and the conventional high frequency is two to three times higher. It became possible to pass an electric current.
[0042]
As a result, the rotor can be shrink-fitted in a short time and with high efficiency.
[0043]
FIG. 4 shows another embodiment of the first conductor pipe 16 acting as a central conductor. In FIG. 4, only the main part centering on the first conductor pipe 16 is conceptually shown, and the same configuration as the configuration shown in FIG. Yes.
[0044]
The first conductor pipe 16 shown in FIG. 4 differs from the first conductor pipe 16 shown in FIG. 3 in that a slit 16c is formed along the axial direction from the end portion 16b. In the first conductor pipe 16 shown in FIG. 4, the slit 16c prevents the inner surface induction heating coil 10 itself from inductively heating the first conductor pipe 16 serving as the center conductor. Can be further improved.
[0045]
FIG. 5 shows another embodiment of the heating member 14. In FIG. 5, only the main part centering on the heating member 14 is conceptually shown, and the same configuration as the configuration shown in FIG. 3 is indicated using the same reference numerals as in FIG. 3.
[0046]
The heating member 14 shown in FIG. 5 forms an extension portion 14a that extends in the axial direction C of the hole 40a of the article 40 to be heated, that is, in the axial direction of the hole 40a that is a cylindrical portion formed in the heated part 40. The heating member 14 is different from the heating member 14 shown in FIG. 3 in that it is wound and molded. In the heating member 14 shown in FIG. 5, for example, when the object to be heated 40 includes a slit 40b extending in the axial direction C of the hole 40a as shown in FIG. It can be heated by passing an induced current in the axial direction.
[0047]
【The invention's effect】
Since the present invention is configured as described above, the heating efficiency is improved, and the inner diameter side of a cylindrical portion such as a hole formed in the object to be heated can be efficiently heated. Excellent effect.
[0048]
In addition, since the present invention is configured as described above, it can be heated with a large output by applying a large amount of current, and has a cylindrical shape such as a hole formed in the object to be heated. The inner diameter side can be heated with a larger output than before.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a conceptual configuration in which a part of a conventional inner diameter surface induction heating coil is broken.
FIG. 2 is a schematic configuration perspective view of a pipe-shaped heating coil.
FIG. 3 is an explanatory diagram of a conceptual configuration in which a part of an embodiment of an inner diameter surface induction heating coil according to the present invention is broken away.
FIG. 4 shows another embodiment of the first conductor pipe that acts as a central conductor, and conceptually shows only the main part centering on the first conductor pipe.
FIG. 5 shows another embodiment of the heating member, conceptually showing only the main part centering on the heating member.
FIG. 6 is a perspective view showing an example of an object to be heated provided with a slit extending in the axial direction of a hole.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Inner diameter surface induction heating coil 12 Case 12-1 Base member 12-1a Plate-shaped part 12-1b Inner diameter side protrusion part 12-1bb Hole 12-2 Cover member 12-2a Expansion part 12-2b Outer diameter side protrusion part 12 -2bb inner surface 14 heating member 16 first conductor pipes 16a, 16b end 16c slit 18 second conductor pipes 18a, 18b end 20 high-frequency current source 22, 24, 26, 28 line 30, 32 bolt 34, 36, 38 O-ring 40 Heated object 40a Hole 40aa Inner diameter surface 40b Slit A, B Space C Axial direction 100 of heated object hole Inner diameter surface induction heating coil 102 Pipe-shaped heating coils 102a, 102b End 104 High-frequency current source 106, 108 Line 110 Heated object 110a Hole 110aa Inner diameter surface

Claims (12)

部材に形成された筒状形状部位の軸方向を中心とした内径側に位置する面である内径面を誘導加熱する内径面誘導加熱コイルにおいて、
絶縁体により形成された中空のケースと、
前記ケースの内部に配設された薄板状の導体よりなり高周波電流を印加される加熱部材と
を有し、
前記加熱部材を配設した前記ケースの内部に冷却水を供給するようにした
ものである内径面誘導加熱コイル。In the inner diameter surface induction heating coil for induction heating the inner diameter surface, which is a surface located on the inner diameter side with the axial direction of the cylindrical portion formed in the member as the center,
A hollow case formed of an insulator;
A heating member to which a high-frequency current is applied consisting of a thin plate-like conductor disposed inside the case;
An inner diameter surface induction heating coil configured to supply cooling water to the inside of the case in which the heating member is disposed. 部材に形成された筒状形状部位の軸方向を中心とした内径側に位置する面である内径面を誘導加熱する内径面誘導加熱コイルにおいて、
絶縁体により形成された中空のケースと、
前記ケースの内部に配設された薄板状の導体よりなり高周波電流を印加される加熱部材と
を有し、
前記ケースは、板状部の略中央部位に内径側突出部が形成された絶縁体よりなるベース部材と、大径の膨出部と細径の外径側突出部とを備えた絶縁体よりなる中空のカバー部材とよりなる
ものである内径面誘導加熱コイル。In the inner diameter surface induction heating coil for induction heating the inner diameter surface, which is a surface located on the inner diameter side with the axial direction of the cylindrical portion formed in the member as the center,
A hollow case formed of an insulator;
A heating member to which a high-frequency current is applied consisting of a thin plate-like conductor disposed inside the case;
The case includes a base member made of an insulator in which an inner diameter side protruding portion is formed at a substantially central portion of the plate-like portion, an insulator including a large diameter bulging portion and a small diameter outer diameter side protruding portion. An inner diameter surface induction heating coil comprising a hollow cover member. 請求項１に記載の内径面誘導加熱コイルにおいて、
前記ケースは、板状部の略中央部位に内径側突出部が形成された絶縁体よりなるベース部材と、大径の膨出部と細径の外径側突出部とを備えた絶縁体よりなる中空のカバー部材とよりなる
ものである内径面誘導加熱コイル。The inner diameter surface induction heating coil according to claim 1,
The case includes a base member made of an insulator in which an inner diameter side protruding portion is formed at a substantially central portion of the plate-like portion, an insulator including a large diameter bulging portion and a small diameter outer diameter side protruding portion. An inner diameter surface induction heating coil comprising a hollow cover member. 請求項２に記載の内径面誘導加熱コイルにおいて、さらに、
前記加熱部材の内径側の略中心に位置する中心導体としてパイプ形状を備えた導体を有し、
前記導体は軸方向に延長するスリットを形成された
ものである内径面誘導加熱コイル。The inner diameter surface induction heating coil according to claim 2, further comprising:
A conductor having a pipe shape as a central conductor located at the approximate center on the inner diameter side of the heating member,
An inner diameter surface induction heating coil in which the conductor is formed with a slit extending in the axial direction. 請求項１または請求項３のいずれか１項に記載の内径面誘導加熱コイルにおいて、さらに、
前記加熱部材の内径側の略中心に位置する中心導体としてパイプ形状を備えた導体を有し、
前記導体は軸方向に延長するスリットを形成された
ものである内径面誘導加熱コイル。The inner diameter surface induction heating coil according to any one of claims 1 and 3, further comprising:
A conductor having a pipe shape as a central conductor located at the approximate center on the inner diameter side of the heating member,
An inner diameter surface induction heating coil in which the conductor is formed with a slit extending in the axial direction. 請求項２または請求項４のいずれか１項に記載の内径面誘導加熱コイルにおいて、
前記加熱部材は、コイル状に巻回して成形してなる
ものである内径面誘導加熱コイル。In the inner diameter surface induction heating coil according to any one of claims 2 and 4,
The heating member is an inner diameter surface induction heating coil that is formed by winding in a coil shape. 請求項１、請求項３または請求項５のいずれか１項に記載の内径面誘導加熱コイルにおいて、
前記加熱部材は、コイル状に巻回して成形してなる
ものである内径面誘導加熱コイル。In the inner diameter surface induction heating coil according to any one of claims 1, 3 and 5,
The heating member is an inner diameter surface induction heating coil that is formed by winding in a coil shape. 請求項２または請求項４のいずれか１項に記載の内径面誘導加熱コイルにおいて、
前記加熱部材は、部材に形成された筒状形状部位の軸方向に延長する延長部を形成するようにして巻回して成形してなる
ものである内径面誘導加熱コイル。In the inner diameter surface induction heating coil according to any one of claims 2 and 4,
The heating member is an inner diameter surface induction heating coil that is formed by winding and forming so as to form an extension portion extending in the axial direction of a cylindrical portion formed in the member. 請求項１、請求項３または請求項５のいずれか１項に記載の内径面誘導加熱コイルにおいて、
前記加熱部材は、部材に形成された筒状形状部位の軸方向に延長する延長部を形成するようにして巻回して成形してなる
ものである内径面誘導加熱コイル。In the inner diameter surface induction heating coil according to any one of claims 1, 3 and 5,
The heating member is an inner diameter surface induction heating coil that is formed by winding and forming so as to form an extension portion extending in the axial direction of a cylindrical portion formed in the member. 部材に形成された筒状形状部位の軸方向を中心とした内径側に位置する面である内径面を誘導加熱する内径面誘導加熱コイルにおいて、
絶縁体により形成された中空のケースと、
前記ケースの内部に配設された導体よりなり高周波電流を印加される加熱部材と
を有し、
前記ケースは、板状部の略中央部位に内径側突出部が形成された絶縁体よりなるベース部材と、大径の膨出部と細径の外径側突出部とを備えた絶縁体よりなる中空のカバー部材とよりなり、
前記加熱部材を配設した前記ケースの内部に冷却水を供給するようにした
ものである内径面誘導加熱コイル。In the inner diameter surface induction heating coil for induction heating the inner diameter surface, which is a surface located on the inner diameter side with the axial direction of the cylindrical portion formed in the member as the center,
A hollow case formed of an insulator;
A heating member to which a high-frequency current is applied consisting of a conductor disposed inside the case;
The case includes a base member made of an insulator in which an inner diameter side protruding portion is formed at a substantially central portion of the plate-like portion, an insulator including a large diameter bulging portion and a small diameter outer diameter side protruding portion. Consisting of a hollow cover member,
An inner diameter surface induction heating coil configured to supply cooling water to the inside of the case in which the heating member is disposed. 部材に形成された筒状形状部位の軸方向を中心とした内径側に位置する面である内径面を誘導加熱する内径面誘導加熱コイルにおいて、
絶縁体により形成された中空のケースと、
前記ケースの内部に配設された薄板状の導体よりなり高周波電流を印加される加熱部材と、
前記加熱部材の内径側の略中心に位置する中心導体としてパイプ形状を備えた導体と
を有し、
前記導体は軸方向に延長するスリットを形成された
ものである内径面誘導加熱コイル。In the inner diameter surface induction heating coil for induction heating the inner diameter surface, which is a surface located on the inner diameter side with the axial direction of the cylindrical portion formed in the member as the center,
A hollow case formed of an insulator;
A heating member to which a high-frequency current is applied consisting of a thin plate-like conductor disposed inside the case;
A conductor having a pipe shape as a central conductor located at substantially the center on the inner diameter side of the heating member;
An inner diameter surface induction heating coil in which the conductor is formed with a slit extending in the axial direction. 部材に形成された筒状形状部位の軸方向を中心とした内径側に位置する面である内径面を誘導加熱する内径面誘導加熱コイルにおいて、
絶縁体により形成された中空のケースと、
前記ケースの内部に配設された導体よりなり高周波電流を印加される加熱部材と、
前記加熱部材の内径側の略中心に位置する中心導体としてパイプ形状を備えた導体と
を有し、
前記導体は軸方向に延長するスリットを形成され、
前記加熱部材を配設した前記ケースの内部に冷却水を供給するようにした
ものである内径面誘導加熱コイル。In the inner diameter surface induction heating coil for induction heating the inner diameter surface, which is a surface located on the inner diameter side with the axial direction of the cylindrical portion formed in the member as the center,
A hollow case formed of an insulator;
A heating member to which a high-frequency current is applied consisting of a conductor disposed inside the case;
A conductor having a pipe shape as a central conductor located at substantially the center on the inner diameter side of the heating member;
The conductor is formed with an axially extending slit;
An inner diameter surface induction heating coil configured to supply cooling water to the inside of the case in which the heating member is disposed.
JP2002054057A 2002-02-28 2002-02-28 Inner surface induction heating coil Expired - Lifetime JP3621685B2 (en)

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