JPH0616470Y2 - Flat plate induction heating coil device - Google Patents

Flat plate induction heating coil device

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Publication number
JPH0616470Y2
JPH0616470Y2 JP6979787U JP6979787U JPH0616470Y2 JP H0616470 Y2 JPH0616470 Y2 JP H0616470Y2 JP 6979787 U JP6979787 U JP 6979787U JP 6979787 U JP6979787 U JP 6979787U JP H0616470 Y2 JPH0616470 Y2 JP H0616470Y2
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JP
Japan
Prior art keywords
flat plate
coil
main coil
plate
conductors
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.)
Expired - Lifetime
Application number
JP6979787U
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Japanese (ja)
Other versions
JPS63178097U (en
Inventor
幸男 咲本
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Meidensha Corp
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Meidensha Corp
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Priority to JP6979787U priority Critical patent/JPH0616470Y2/en
Publication of JPS63178097U publication Critical patent/JPS63178097U/ja
Application granted granted Critical
Publication of JPH0616470Y2 publication Critical patent/JPH0616470Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【考案の詳細な説明】 Ａ．産業上の利用分野 本考案は、板幅が異なっても主コイルを交換することな
く板幅方向への加熱を均一に行う平板の誘導加熱コイル
装置に係り、特に板幅の狭い平板の均一加熱を可能にし
たものである。Detailed Description of the Invention A. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat plate induction heating coil device that uniformly heats in the plate width direction without exchanging the main coil even if the plate width is different. Is made possible.

Ｂ．考案の概要 本考案は、一対の主コイル導体を平板の長さ方向へ複数
組配置して直交磁束形の主コイルを構成する一方、補助
コイル導体を平板の長さ方向へ一組以上配置して直交磁
束形の補助コイルを構成した誘導加熱コイル装置におい
て、 隣り合う主コイル導体等で閉ループが形成される区間以
外の範囲に補助コイルを配置し、閉ループ区間での主コ
イル導体のピッチを最小値まで変え得る構成とすること
により、 板幅の異なる平板を主コイルを交換することなく板幅方
向へ均一に誘導加熱でき、板幅の特に狭い平板の均一加
熱を可能にしたものである。B. Outline of the Invention In the present invention, a plurality of pairs of main coil conductors are arranged in the length direction of a flat plate to form an orthogonal magnetic flux type main coil, while one or more sets of auxiliary coil conductors are arranged in the length direction of the plate. In an induction heating coil device that has an orthogonal magnetic flux type auxiliary coil, arrange the auxiliary coil in a range other than the section where a closed loop is formed by adjacent main coil conductors, etc., and minimize the pitch of the main coil conductor in the closed loop section. By adopting a configuration in which the plate width can be changed, it is possible to uniformly heat flat plates having different plate widths in the plate width direction without replacing the main coil, and it is possible to uniformly heat flat plates having a particularly narrow plate width.

Ｃ．従来の技術 平板を搬送しながら誘導加熱する誘導加熱コイル装置と
して、第５図に示すものが提案されている。C. 2. Description of the Related Art As an induction heating coil device for carrying out induction heating while conveying a flat plate, the one shown in FIG. 5 has been proposed.

この誘導加熱コイル装置は、平板１を挟んで配置される
とともに高周波又は中周波の電源２に接続された直交磁
束形の主コイル３と、平板１を挟んで配置されるととも
に電源４に接続された直交磁束形の補助コイル５とを平
板の搬送方向に配設して構成されている。This induction heating coil device is arranged so as to sandwich a flat plate 1 and is connected to a high frequency or medium frequency power supply 2 in the form of an orthogonal magnetic flux type main coil 3, and is arranged so as to sandwich the flat plate 1 and connected to a power supply 4. And the auxiliary coil 5 of the orthogonal magnetic flux type are arranged in the transport direction of the flat plate.

主コイル３は平板１を挟んで平板１の両面に対向して、
平板１の板幅方向へ板幅Ｗを越えて延在する主コイル導
体６ａ〜６ｆを図のように配設し、これらの主コイル導
体間を接続するとともに電源２に接続し、主コイル導体
６ａ〜６ｆの背後に鉄心７を取り付けたものである。一
方、補助コイル５は、平板１を挟んで平板１の両面に対
向して平板１の板幅方向の両側縁の内側にて平板１の長
さ方向へ延在する補助コイル導体８ａ，８ｂを図のよう
に配設し、これらの補助コイル導体間を接続するととも
に電源４に接続し、補助コイル導体８ａ，８ｂの背後に
鉄心９を取り付けたものである。なお、前述したよう
に、夫々の主コイル導体６ａ〜６ｆ及び補助コイル導体
８ａ，８ｂは平板１の裏側にも同一のものが位置する。The main coil 3 faces both sides of the flat plate 1 with the flat plate 1 interposed therebetween,
The main coil conductors 6a to 6f extending in the plate width direction of the flat plate 1 beyond the plate width W are arranged as shown in the figure, and the main coil conductors are connected to each other and connected to the power supply 2 as well. The iron core 7 is attached behind 6a to 6f. On the other hand, the auxiliary coil 5 has auxiliary coil conductors 8a, 8b extending in the length direction of the flat plate 1 inside both side edges of the flat plate 1 in the width direction of the flat plate 1 so as to face both sides of the flat plate 1. The auxiliary coil conductors are arranged as shown in the figure, these auxiliary coil conductors are connected to each other, the power source 4 is connected, and the iron core 9 is attached behind the auxiliary coil conductors 8a and 8b. As described above, the same main coil conductors 6a to 6f and auxiliary coil conductors 8a and 8b are also located on the back side of the flat plate 1.

斯かる誘導加熱コイル装置により、主コイル３及び補助
コイル５に通電しながら例えば板幅Ｗが４００mmの平板
を誘導加熱すると、第６図（ａ）に示すように平板は板
幅方向へ均一に誘導加熱される。With such an induction heating coil device, when a flat plate having a plate width W of 400 mm is induction-heated while the main coil 3 and the auxiliary coil 5 are energized, the flat plate becomes uniform in the plate width direction as shown in FIG. 6 (a). Induction heated.

なお先に出願してある特願昭６１−１１８９３４号に記
載されるように平板１の主コイル３のみの加熱による板
幅方向の温度分布は第８図（ｂ）に示すような温度分布
となり、両端部の内側に生じた温度分布の谷部Ｂ，Ｄに
相当する部位が補助コイル５によって加熱されるので、
主コイル３及び補助コイル５を第５図に示すように平板
１の搬送方向へ沿って配設して加熱することによって、
主コイル３および補助コイル５を通過して搬送された平
板１は第６図（ａ）に示すように板幅方向に均一な温度
分布で誘導加熱される。As described in Japanese Patent Application No. 61-118934 filed earlier, the temperature distribution in the plate width direction by heating only the main coil 3 of the flat plate 1 becomes the temperature distribution shown in FIG. 8 (b). Since the parts corresponding to the valleys B and D of the temperature distribution generated inside the both ends are heated by the auxiliary coil 5,
By arranging the main coil 3 and the auxiliary coil 5 along the conveyance direction of the flat plate 1 as shown in FIG.
The flat plate 1 conveyed through the main coil 3 and the auxiliary coil 5 is induction-heated with a uniform temperature distribution in the plate width direction as shown in FIG. 6 (a).

しかし、斯かる誘導加熱コイル装置を用いて例えば板幅
Ｗが小さい３００mmの平板を誘導加熱する場合、主コイ
ル３を変えることなく板幅Ｗに応じて補助コイル５のみ
を変えるか又は補助コイル導体８ａ，８ｂ間の距離を変
えて可能な限り調整しても、第６図（ｂ）に示すように
平板の板幅方向の中央部の温度が低下するという問題が
ある。従って、平板の板幅Ｗが異なる都度に主コイル３
を交換しないと板幅方向の温度を均一にすることができ
ない。However, when using such an induction heating coil device, for example, to induction-heat a flat plate having a small plate width W of 300 mm, only the auxiliary coil 5 is changed according to the plate width W without changing the main coil 3. Even if the distance between 8a and 8b is changed and adjusted as much as possible, there is a problem that the temperature of the central portion of the flat plate in the plate width direction decreases as shown in FIG. 6 (b). Therefore, each time the plate width W of the flat plate changes, the main coil 3
The temperature in the plate width direction cannot be made uniform unless these are replaced.

このように同一の主コイルを用いて板幅の異なる平板を
誘導加熱すると板幅方向の温度分布が不均一になるのは
以下の理由による。The induction heating of flat plates having different plate widths using the same main coil makes the temperature distribution in the plate width direction non-uniform for the following reason.

例えば第７図（ａ）に示すように背後に鉄心７を取り付
けた主コイル導体６ａ〜６ｆを平板１の両面に対向して
配設するとともにこれらの主コイル導体間を接続した直
交磁束型の主コイル１０を電源２に接続した誘導加熱コ
イル装置や、第７図（ｂ）に示すように背後に鉄心７を
取り付けた主コイル導体６ａ〜６ｄを平板１の両面に対
向して配設するとともにこれらの主コイル導体間を接続
した直交磁束形の主コイル１１を電源２に接続した誘導
加熱コイル装置（いずれも補助コイルなし）で平板１を
図中の矢印方向へ搬送しながら誘導加熱すると、夫々の
主コイル導体には矢印方向の電流Ｉが流れると同時に平
板１には誘起電流ｉが図のように循環流路を形成して流
れ、平板１が加熱される。この際の平板１の板幅方向の
温度分布は第８図（ｂ）のようになる。For example, as shown in FIG. 7 (a), main coil conductors 6a to 6f each having an iron core 7 attached to the back are arranged on both sides of the flat plate 1 so as to face each other, and the main coil conductors are connected to each other to form an orthogonal magnetic flux type. An induction heating coil device in which the main coil 10 is connected to the power source 2 and main coil conductors 6a to 6d having iron cores 7 attached to the back thereof as shown in FIG. In addition, when induction heating is performed while the flat plate 1 is conveyed in the direction of the arrow in the drawing by an induction heating coil device (no auxiliary coil in any case) in which the main coil 11 of the orthogonal magnetic flux type in which the main coil conductors are connected to each other is connected to the power source At the same time, a current I in the direction of the arrow flows through each main coil conductor, and at the same time, an induced current i flows through the flat plate 1 forming a circulation flow path as shown in the figure, and the flat plate 1 is heated. The temperature distribution in the plate width direction of the flat plate 1 at this time is as shown in FIG. 8 (b).

ところで、斯かる誘導加熱コイル装置において、平板１
の板幅Ｗを変えることなく第７図（ａ）又は第７図
（ｂ）の主コイル導体間のピッチＰを小さくすると第８
図（ａ）に示すように平板１の両側の温度が中央部に比
較して低くなり、逆にピッチＰを大きくすると第８図
（ｃ）に示すように平板１の両側の温度が中央部よりも
上昇することが判明した。これは以下の理由による。平
板１の板幅方向の温度分布が第８図（ａ），（ｂ），
（ｃ）となるときの誘起電流ｉの循環流路は第９図
（ａ），（ｂ），（ｃ）であり、第９図（ａ），
（ｂ），（ｃ）では平板１の板幅Ｗは一定であるために
板幅方向へ流れる誘起電流ｉの流路長に変化はないが、
ピッチＰが小さいほど第９図（ａ）に示すように平板１
の両側での平板１の長さ方向の流路長が短くなり、従っ
て加熱される距離が短くなるので第８図（ａ）に示すよ
うに平板１の中央部に比較して両側での温度上昇が少な
くなる。また逆にピッチＰが大きいほど第９図（ｃ）に
示すように平板１の両側での平板１の長さ方向の流路長
が大きくなり加熱される距離が、より多くなるので第８
図（ｃ）に示すように平板１の両側の温度が中央部より
高くなる。なお、第７図（ａ），第７図（ｂ）に示した
主コイル導体は鉄心を取り付けてあるが、これらの鉄心
は加熱効率を高めるために設けたものであり、これらの
鉄心を設けない場合にも温度分布について上記と全く同
様な結果が得られた。By the way, in such an induction heating coil device, the flat plate 1
If the pitch P between the main coil conductors in FIG. 7 (a) or FIG. 7 (b) is reduced without changing the plate width W of FIG.
As shown in FIG. 8A, the temperature on both sides of the flat plate 1 becomes lower than that at the central portion. Conversely, when the pitch P is increased, the temperature on both sides of the flat plate 1 becomes central portion as shown in FIG. 8C. Turns out to rise more than. This is for the following reason. The temperature distribution in the width direction of the flat plate 1 is shown in FIGS. 8 (a), (b),
The circulation flow path of the induced current i when becoming (c) is shown in FIGS. 9 (a), (b), and (c).
In (b) and (c), since the plate width W of the flat plate 1 is constant, the flow path length of the induced current i flowing in the plate width direction does not change.
The smaller the pitch P, the flat plate 1 as shown in FIG. 9 (a).
Since the length of the flow path in the length direction of the flat plate 1 on both sides of the flat plate 1 becomes shorter, and the heating distance becomes shorter, the temperature at both sides of the flat plate 1 becomes smaller than that at the center of the flat plate 1 as shown in FIG. 8 (a). The rise is less. On the contrary, as the pitch P becomes larger, as shown in FIG. 9 (c), the flow path length in the length direction of the flat plate 1 on both sides of the flat plate 1 becomes larger, and the heating distance becomes longer.
As shown in FIG. 3C, the temperature on both sides of the flat plate 1 becomes higher than that at the central portion. The main coil conductors shown in FIGS. 7 (a) and 7 (b) are provided with iron cores, but these iron cores are provided to enhance heating efficiency. Even when there was no temperature distribution, the same result as above was obtained for the temperature distribution.

以上は平板の板幅を一定にして主コイル導体のピッチを
変えた場合の板幅方向の温度変化の説明であるが、主コ
イル導体のピッチを一定にして平板の板幅を変えた場合
も平板の板幅方向と長さ方向での誘起電流の流路長の比
率が相対的に異なることとなるため、板幅方向での温度
分布が変動する。つまり、板幅Ｗを大きくすると平板の
中央部の温度が上がって両側の温度が相対的に下がり、
第８図（ａ）に類似する温度分布となる。逆に、板幅Ｗ
を小さくすると中央部の温度が相対的に下がって第８図
（ｃ）に類似する温度分布となる。このように板幅を変
えると主コイルによって誘導加熱される際の板幅方向の
温度分布が変動するため、同一の主コイルをそのままで
用いたのでは第５図のように主コイルと補助コイルとを
平板の搬送方向に沿って配設し、補助コイル導体８ａ，
８ｂの間隔を平板１の板幅に合わせて調整しても板幅方
向での温度を第６図（ａ）に示したように均一に誘導加
熱することができずに第６図（ｂ）に示したように不均
一な温度分布となってしまう。The above is the description of the temperature change in the plate width direction when the plate width of the flat plate is fixed and the pitch of the main coil conductor is changed. However, when the plate width of the flat plate is changed while the pitch of the main coil conductor is fixed. Since the ratio of the flow path length of the induced current in the plate width direction and the length direction of the flat plate is relatively different, the temperature distribution in the plate width direction changes. That is, when the plate width W is increased, the temperature of the central portion of the flat plate rises and the temperatures of both sides relatively decrease,
The temperature distribution is similar to that shown in FIG. Conversely, the plate width W
When is smaller, the temperature of the central portion is relatively lowered, and the temperature distribution becomes similar to that in FIG. 8 (c). When the plate width is changed in this way, the temperature distribution in the plate width direction when induction heating is performed by the main coil fluctuates. Therefore, if the same main coil is used as it is, the main coil and the auxiliary coil are changed as shown in FIG. Are arranged along the conveyance direction of the flat plate, and the auxiliary coil conductors 8a,
Even if the interval of 8b is adjusted according to the plate width of the flat plate 1, the temperature in the plate width direction cannot be uniformly induction-heated as shown in FIG. 6 (a), and FIG. 6 (b). As shown in, the temperature distribution becomes non-uniform.

板幅が変わっても板幅方向の加熱温度を均一にするには
補助コイルにおける補助コイル導体の間隔を平板の板幅
に合わせて調整するとともに、主コイル導体のピッチを
平板の板幅の変更に合わせて変えればようことになり、
第１０図（ａ），（ｂ）に示す誘導加熱コイル装置が提
案されている。第１０図（ａ）中、１３は直交磁束型の
主コイル、１４は直交磁束型の補助コイルである。主コ
イル１３は主コイル導体１５ａ〜１５ｄ等で構成され、
ピッチＰ１，Ｐ２で示すように主コイル導体１５ａ・１
５ｂおよび接続導体２２ａ，２２ｆ，主コイル導体１５
ｃ・１５ｄおよび接続導体２２ｂ，２２ｇで囲まれた範
囲が閉ループ区間である。後者の閉ループ区間に補助コ
イル１４が配置されている。一方、第１０図（ｂ）にお
いては直交磁束型の主コイルが１７，直交磁束型の補助
コイルが１８である。主コイル１７は主コイル導体１９
ａ〜１９ｆ等で構成され、ピッチＰ１，Ｐ２，Ｐ３で示
すように主コイル導体１９ａ・１９ｂ・１９ｃ・１９
ｄ，１９ｅ・１９ｆで囲まれた範囲が閉ループ区間であ
る。ピッチＰ２と対応する閉ループ区間に補助コイル１
８が配置されている。第１０図（ａ）の場合も第１０図
（ｂ）の場合も平板１の反対側に同一の主コイル導体及
び補助コイル導体が配置されており、主コイルにおける
主コイル導体間のピッチＰ１〜Ｐ３および補助コイルに
おける補助コイル導体８ａ，８ｂ間の間隔を変えること
によって板幅Ｗの大小に拘わらず板幅方向へ均等に加熱
することができる。To make the heating temperature uniform in the plate width direction even if the plate width changes, adjust the spacing of the auxiliary coil conductors in the auxiliary coil according to the plate width of the flat plate, and change the pitch of the main coil conductors to the plate width of the flat plate. If you change it according to
An induction heating coil device shown in FIGS. 10 (a) and 10 (b) has been proposed. In FIG. 10 (a), 13 is an orthogonal magnetic flux type main coil, and 14 is an orthogonal magnetic flux type auxiliary coil. The main coil 13 is composed of main coil conductors 15a to 15d,
As indicated by the pitches P 1 and P 2 , the main coil conductors 15a · 1
5b and connection conductors 22a and 22f, main coil conductor 15
The range surrounded by c · 15d and the connecting conductors 22b and 22g is a closed loop section. The auxiliary coil 14 is arranged in the latter closed loop section. On the other hand, in FIG. 10B, the orthogonal magnetic flux type main coil is 17, and the orthogonal magnetic flux type auxiliary coil is 18. The main coil 17 is the main coil conductor 19
a to 19f, etc., and the main coil conductors 19a, 19b, 19c, 19 as indicated by the pitches P 1 , P 2 , P 3.
The range surrounded by d, 19e and 19f is the closed loop section. Auxiliary coil 1 in the closed loop section corresponding to the pitch P 2.
8 are arranged. 10 (a) and 10 (b), the same main coil conductor and auxiliary coil conductor are arranged on the opposite side of the flat plate 1, and the pitch P 1 between the main coil conductors in the main coil is ~ P 3 and by changing the distance between the auxiliary coil conductors 8a and 8b in the auxiliary coil, it is possible to heat uniformly in the plate width direction regardless of the size of the plate width W.

Ｄ．考案が解決しようとする問題点 ところが、平板の板幅Ｗが異なる平板，特に板幅Ｗの小
さい平板を誘導加熱する場合にはピッチＰ１．Ｐ２（第
１０図（ａ）の場合）又はピッチＰ１〜Ｐ３（第１０図
（ｂ）の場合）をかなり小さくしなければ平板の中央部
の温度を平板の両側端部に温度と同等に上げられないに
もかかわらず、第１０図（ａ）においては主コイル導体
１５ｃ・１５ｄ間に補助コイル１４が存在し第１０図
（ｂ）においては主コイル導体１９ｃ・１９ｄ間に補助
コイル１８が存在するため、いずれもピッチ２の減少化
には限界があり、そのために第６図（ｂ）に示したよう
に平板の中央部の温度が両側より低くなる。つまり、板
幅が小さい平板にあっては板幅方向へ均等に誘導加熱さ
れるように調整しきれないことになる。D. The problem to be solved by the invention is that the pitch P 1 is required when induction heating of flat plates having different plate widths W, particularly flat plates having a small plate width W. Unless P 2 (in the case of FIG. 10 (a)) or pitch P 1 to P 3 (in the case of FIG. 10 (b)) is made considerably small, the temperature at the center of the flat plate is Although not equally raised, the auxiliary coil 14 exists between the main coil conductors 15c and 15d in FIG. 10 (a), and the auxiliary coil 14c between the main coil conductors 19c and 19d in FIG. 10 (b). Since there is 18, there is a limit to the reduction of the pitch 2 , and therefore the temperature of the central portion of the flat plate becomes lower than both sides as shown in FIG. 6 (b). In other words, a flat plate having a small plate width cannot be adjusted so as to be uniformly heated in the plate width direction.

ここで、例えば第１０図（ａ）について考えてみると以
下のことがわかる。本出願人の出願である実願昭６１−
３９９８９号に記載されているように図中のピッチＰ１
及びピッチＰ２の範囲では主コイル導体および主コイル
導体どうしを接続する接続導体によって周囲全体が囲ま
れ電流の閉ループ区間を形成し、そのため、この範囲で
は高周波又は中周波電流が流れる方向とは反対方向へ誘
起電流ｉが流れて平板１の表面に循環通路が形成され
る。つまり、この閉ループ区間の存在によって平板１が
誘導加熱される（ピッチＰ１，Ｐ２の範囲でのみ平板１
に加熱跡が見られた。）。一方、主コイル導体１５ｂ，
１５ｃによって囲まれた範囲は図中の左側が開いた閉ル
ープ区間を形成しており、このため、この範囲では平板
１に誘起電流が流れず、平板１の誘導加熱には関与しな
い。つまり、ピッチＰ１，ピッチＰ２を変えると平板１
の中央部と両側との相対的な加熱温度分布が変わるた
め、板幅方向での温度分布を変えて板幅Ｗの大きさに拘
わらず、均等加熱をすることができるが主コイル導体１
５ｃ，１５ｄ間には補助コイル１４が存在するためピッ
チＰ２を補助コイル１４の長さ以上に小さくすることが
できない。一方、主コイル導体１５ｂ，１５ｃ間のピッ
チを変えても板幅方向の温度分布は変わらない。Here, for example, considering FIG. 10 (a), the following can be understood. Applicant's application, Japanese Patent Application No. Sho 61-
Pitch P 1 in the figure as described in No. 39989
And in the range of the pitch P 2, the entire circumference is surrounded by the main coil conductors and the connecting conductors that connect the main coil conductors to each other to form a closed loop section of current. Therefore, in this range, the direction opposite to the direction in which high-frequency or medium-frequency current flows is formed. The induced current i flows in the direction to form a circulation passage on the surface of the flat plate 1. That is, the flat plate 1 is induction-heated by the existence of this closed loop section (the flat plate 1 is only in the range of the pitches P 1 and P 2 ).
There was a trace of heating. ). On the other hand, the main coil conductor 15b,
The area surrounded by 15c forms a closed loop section whose left side in the figure is open, and therefore, no induced current flows in the flat plate 1 in this range and does not participate in induction heating of the flat plate 1. That is, when the pitch P 1 and the pitch P 2 are changed, the flat plate 1
Since the relative heating temperature distribution between the central portion and both sides of the sheet changes, the temperature distribution in the sheet width direction can be changed to perform uniform heating regardless of the sheet width W.
Since the auxiliary coil 14 exists between 5c and 15d, the pitch P 2 cannot be made smaller than the length of the auxiliary coil 14. On the other hand, even if the pitch between the main coil conductors 15b and 15c is changed, the temperature distribution in the plate width direction does not change.

以上のことは第１０図（ｂ）場合についてもいえること
であり、この主コイル１７では主コイル導体１９ａ〜１
９ｂ，１９ｃ〜１９ｄおよび１９ｅ〜１９ｆの間の範囲
はすべてが閉ループを形成し、これらの間のピッチＰ１
〜Ｐ３を変えることで板幅方向での温度分布が変えられ
るがピッチＰ２は補助コイル１８の長さ以上に小さくす
ることができないので板幅方向の温度分布を調整するう
えで、支障が生じる。The above can be said also in the case of FIG. 10 (b), and in the main coil 17, the main coil conductors 19a to 19a are used.
9b, 19c to 19d and 19e to 19f all form a closed loop, with a pitch P 1 between them.
Since the temperature distribution in the plate width direction is changed by changing the to P 3 pitch P 2 can not be reduced more than the length of the auxiliary coil 18 in order to adjust the temperature distribution in the plate width direction, hinder Occurs.

そこで本考案は、斯かる問題を解決した平板の誘導加熱
コイル装置を提供することを目的とする。Then, this invention aims at providing the flat-plate induction heating coil apparatus which solved such a problem.

Ｅ．問題点を解決するための手段 斯かる目的を達成するための本考案の構成は、 搬送ラインに沿って搬送される長尺な平板の板幅方向へ
板幅を越えて延在するとともに平板を挟んで対向する一
対の主コイル導体を平板の長さ方向へ複数組配置して直
交磁束形の主コイルを構成する一方、平板の板幅方向の
両側縁の内側にて平板の長さ方向へ延在するとともに平
板を挟んで対向する二対の補助コイル導体を平板の長さ
方向へ一組以上配置して直交磁束形の補助コイルを構成
し主コイルと補助コイルとを平板の搬送方向に沿って配
設するとともに、主コイル及び補助コイルを高周波また
は中周波の電源に接続した平板の誘導加熱コイル装置に
おいて、前記主コイル導体と、主コイル導体どうしを接
続する接続導体とが閉ループを形成する区間以外の範囲
に前記補助コイルを配置し、閉ループ区間における平板
の長さ方向での主コイル導体間のピッチを変え得る構成
としたことを特徴とする。E. Means for Solving the Problems The structure of the present invention for achieving such an object is to extend a plate extending in the plate width direction in the plate width direction of a long flat plate conveyed along a conveyance line and A plurality of pairs of main coil conductors facing each other across the plate are arranged in the length direction of the flat plate to form a main coil of orthogonal magnetic flux type, while inside the both side edges of the flat plate in the width direction of the flat plate. Two or more pairs of auxiliary coil conductors that extend and face each other across the flat plate are arranged in the length direction of the flat plate to form an orthogonal magnetic flux type auxiliary coil, and the main coil and the auxiliary coil are arranged in the flat plate conveying direction. In a flat plate induction heating coil device in which the main coil and the auxiliary coil are connected to a high-frequency or medium-frequency power source, the main coil conductor and the connection conductor connecting the main coil conductors form a closed loop. Other than the section Enclose the auxiliary coil is disposed, characterized in that a structure which can alter the pitch between the main coil conductors in the longitudinal direction of the flat plate in a closed loop section.

Ｆ．作用 平板の板幅を基準の値より広くすると、板幅方向への誘
起電流の流路長が長くなって中央部の温度が上昇し、相
対的に両側の温度が低くなり、この場合の平板の長さ方
向での主コイル導体のピッチを大きくして平板の両側で
の平板の長さ方向での流路長を長くすれば、両側の温度
が高くなって平板の板幅方向での加熱温度が均一とな
る。F. When the plate width of the flat plate is wider than the standard value, the flow path length of the induced current in the plate width direction becomes longer, the temperature of the central part rises, and the temperature of both sides becomes relatively low. If the pitch of the main coil conductor in the length direction of the flat plate is increased to lengthen the flow path length in the length direction of the flat plate on both sides of the flat plate, the temperature on both sides becomes higher and the flat plate is heated in the width direction of the flat plate. The temperature becomes uniform.

逆に平板の板幅を基準の値よりも狭くすると、板幅方向
への誘起電流の流路長が短くなって中央部の温度が下が
り、相対的に両側の温度が高くなり、この場合は平板の
長さ方向での主コイル導体のピッチを小さくして平板の
両側での平板の長さ方向の流路長を短くすれば、両端の
温度が低くなって平板の板幅方向での加熱温度が均一と
なる。On the contrary, if the plate width of the flat plate is narrower than the reference value, the flow path length of the induced current in the plate width direction becomes shorter, the temperature at the central part decreases, and the temperatures on both sides become relatively higher. If the pitch of the main coil conductor in the length direction of the flat plate is reduced to shorten the flow path length in the length direction of the flat plate on both sides of the flat plate, the temperature at both ends becomes lower and the flat plate is heated in the width direction of the flat plate. The temperature becomes uniform.

本考案では主コイルにおける閉ループとなる主コイル導
体間を避けて補助コイルを配設するか、または主コイル
における主コイル導体どうしての間に閉ループ区間を設
けるとともにこの開ループ区間に補助コイルを設ける一
方、主コイル導体どうしの閉ループ区間には補助コイル
を設けていないので、平板に循環電流が生じる閉ループ
区間においては主コイル導体のピッチを最小限の零近く
まで自在に小さくして板幅の極めて狭い平板でも板幅方
向へ均一に加熱できる。In the present invention, the auxiliary coil is arranged avoiding between the main coil conductors forming a closed loop in the main coil, or the closed coil section is provided between the main coil conductors in the main coil and the auxiliary coil is provided in the open loop section. , Since the auxiliary coil is not provided in the closed loop section between the main coil conductors, in the closed loop section where the circulating current is generated in the flat plate, the pitch of the main coil conductors can be freely reduced to near zero and the plate width is extremely narrow. Even flat plates can be heated uniformly in the width direction.

一方、補助コイルは平板の板幅方向のピッチを調整する
か、又は板幅に合わせて交換することになる。On the other hand, the auxiliary coil is adjusted by adjusting the pitch of the flat plate in the plate width direction or replaced according to the plate width.

Ｇ．実施例 以下、本考案を図面に示す実施例に基づいて詳細に説明
する。本実施例は第１実施例〜第３実施例からなり、い
ずれも主コイル導体及び補助コイル導体は平板の両面に
対向して設けられているので、片側についてのみ説明す
る。なお、本実施例は従来の一部を改良したものなの
で、同一部分には同一符号を付して説明を省略し、異な
る部分のみを説明する。G. Embodiment Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. The present embodiment comprises the first to third embodiments, and in each case, the main coil conductor and the auxiliary coil conductor are provided so as to face both sides of the flat plate, so only one side will be described. Since this embodiment is an improvement of a part of the conventional art, the same parts are designated by the same reference numerals, and the description thereof will be omitted. Only different parts will be described.

第１実施例は、第１図のように主コイル２３と補助コイ
ル２４，２４とから構成されている。主コイル２３は、
平板１の板幅方向へ板幅Ｗを越えて延在する主コイル導
体２１ａ〜２１ｆと、主コイル導体２１ａ〜２１ｆを平
板１を長さ方向へ移動し得るように主コイル導体間およ
び電源２とを接続する接続導体２２ａ〜２２ｇ等から構
成され、ピッチＰ１，Ｐ２，Ｐ３で示す主コイル導体２
１ａ・２１ｂ間，２１ｃ・２１ｄ間，２１ｅ・２１ｆ間
が閉ループ区間を形成し、主コイル導体２１ｂ・２１ｃ
間，２１ｄ・２１ｅ間が開ループ区間を形成している。
開ループ区間を形成する区間を夫々補助コイル２４が配
置され、補助コイル２４は合計２組配置されている。補
助コイル２４は、平板１の板幅方向の両側縁の内側にて
平板１の長さ方向へ伸びる補助コイル導体２４ａ，２５
ｂと、補助コイル導体２５ａ，２５ｂを板幅方向へ移動
自在に電源４へ接続する接続導体２６ａ〜２６ｃとから
構成されている。The first embodiment comprises a main coil 23 and auxiliary coils 24, 24 as shown in FIG. The main coil 23 is
Main coil conductors 21a to 21f extending in the plate width direction of the flat plate 1 beyond the plate width W, and between the main coil conductors and the power source 2 so that the main coil conductors 21a to 21f can be moved in the plate 1 in the length direction. The main coil conductor 2 composed of connection conductors 22a to 22g and the like for connecting to each other and indicated by pitches P 1 , P 2 , and P 3.
A closed loop section is formed between 1a and 21b, between 21c and 21d, and between 21e and 21f, and main coil conductors 21b and 21c are formed.
And 21d and 21e form an open loop section.
The auxiliary coil 24 is arranged in each of the sections forming the open loop section, and the auxiliary coils 24 are arranged in two sets in total. The auxiliary coil 24 includes auxiliary coil conductors 24a and 25 extending in the length direction of the flat plate 1 inside both side edges of the flat plate 1 in the plate width direction.
b, and connection conductors 26a to 26c for connecting the auxiliary coil conductors 25a and 25b to the power source 4 so as to be movable in the plate width direction.

第２実施例は、第２図のように主コイル２８と補助コイ
ル２９とから構成されている。主コイル２８は、平板１
の板幅方向へ板幅Ｗを越えて延在する主コイル導体３０
ａ〜３０と、主コイル導体３０ａ〜３０を平板１の
長さ方向へ移動しうるように主コイル導体間および電源
２とを接続する接続導体３１ａ〜３１ｍ等から構成さ
れ、ピッチＰ１，Ｐ２，Ｐ３，Ｐ４，Ｐ５，Ｐ６で示す
主コイル導体３０ａ・３０ｂ間，３０ｃ・３０ｄ間，３
０ｅ・３０ｆ間，３０ｇ・３０ｈ間，３０ｉ・３０ｊ
間，３０ｈ・３０間が閉ループ区間を形成し、主コイ
ル導体３０ｆ・３０ｇ間が開ループ区間を形成するよう
に構成されている。そして開ループ区間に補助コイル２
９が配置されている。補助コイル２９は前記と同様に補
助コイル導体３２ａ，３２ｂと、接続導体３３ａ〜３３
ｃ等から構成されている。The second embodiment is composed of a main coil 28 and an auxiliary coil 29 as shown in FIG. The main coil 28 is the flat plate 1
Of the main coil conductor 30 extending in the plate width direction beyond the plate width W
a to 30 and connecting conductors 31a to 31m for connecting the main coil conductors 30a to 30 to the main coil conductors and the power source 2 so that the main coil conductors 30a to 30 can be moved in the length direction of the flat plate 1, and the pitches P 1 and P 2 , P 3 , P 4 , P 5 , and P 6 between the main coil conductors 30a and 30b, between 30c and 30d, 3
Between 0e and 30f, between 30g and 30h, 30i and 30j
, 30h and 30 form a closed loop section, and the main coil conductors 30f and 30g form an open loop section. And the auxiliary coil 2 in the open loop section
9 are arranged. The auxiliary coil 29 includes the auxiliary coil conductors 32a and 32b and the connection conductors 33a to 33, as described above.
It is composed of c and the like.

第３実施例は、第３図のように主コイル３５と補助コイ
ル３６とから構成されている。主コイル３５は、平板１
の板幅方向へ板幅Ｗを越えて延在する主コイル導体３７
ａ〜３７ｆと、主コイル導体３７ｂ，３７ｅの両端の曲
がった部分と共働きして主コイル導体３７ａ，３７ｃ，
３７ｄ，３７ｆを平板１の長さ方向へ移動しうるように
主コイル導体間および電源２とを接続する接続導体３８
ａ〜３８ｃ等から構成され、ピッチＰ１，Ｐ２，Ｐ３で
示す主コイル導体３７ａ・３７ｂ間，３７ｃ・３７ｄ
間，３７ｅ・３７ｆ間が閉ループ区間を形成し、主コイ
ル導体３７ｂ・３７ｃ間，３７ｄ・３７ｅ間が開ループ
区間を形成している。開ループ区間を形成する主コイル
導体３７ｂ，３７ｃ間には平板１の長さ方向へ伸びる補
助コイル導体３９ａ，３９ｂが配置され、開ループ区間
を形成する主コイル導体３７ｄ・３７ｅ間には平板１の
長さ方向へ傾斜して伸びる補助コイル導体３９ｃ，３９
ｄが配置され、これらの補助コイル導体３９ａ〜３９ｄ
は平板１の板幅方向へ移動しうるように接続導体４０ａ
〜４０ｅによって互いに接続されるとともに電源４に接
続されている。The third embodiment comprises a main coil 35 and an auxiliary coil 36 as shown in FIG. The main coil 35 is the flat plate 1
Of the main coil conductor 37 extending in the plate width direction beyond the plate width W
a to 37f and the main coil conductors 37a, 37c, 37c
Connection conductor 38 for connecting between the main coil conductors and the power supply 2 so that 37d and 37f can be moved in the length direction of the flat plate 1.
a to 38c and the like, between the main coil conductors 37a and 37b, which are indicated by pitches P 1 , P 2 and P 3 , 37c and 37d.
, 37e, 37f form a closed loop section, and main coil conductors 37b, 37c, 37d, 37e form an open loop section. Auxiliary coil conductors 39a, 39b extending in the length direction of the flat plate 1 are arranged between the main coil conductors 37b, 37c forming the open loop section, and the flat plate 1 is arranged between the main coil conductors 37d, 37e forming the open loop section. Auxiliary coil conductors 39c, 39 extending obliquely in the longitudinal direction of the
d are arranged and these auxiliary coil conductors 39a to 39d are provided.
Is a connecting conductor 40a so that it can move in the plate width direction of the flat plate 1.
˜40e are connected to each other and to the power supply 4.

次に、第１実施例〜第３実施例に共通する接続導体と主
コイル導体又は補助コイル導体との結合部の構造を第４
図に示す。ここでは一例として第１図の主コイル導体２
１ｆと接続導体２２ｇとの結合部について説明する。接
続導体２２ｇにはその長さ方向へ長孔４１が形成され、
主コイル導体２１ｆの端部へ挿通したボルト４２を長孔
４１へ挿通し、ボルト４２に図示しないナットが螺合さ
れている。Next, the structure of the connecting portion of the connection conductor and the main coil conductor or the auxiliary coil conductor, which is common to the first to third embodiments, will be described as the fourth embodiment.
Shown in the figure. Here, as an example, the main coil conductor 2 of FIG.
The joint between the 1f and the connection conductor 22g will be described. A long hole 41 is formed in the connecting conductor 22g in the length direction,
A bolt 42 inserted into the end of the main coil conductor 21f is inserted into the elongated hole 41, and a nut (not shown) is screwed into the bolt 42.

次に、本考案による平板の誘導加熱コイル装置の作用を
説明する。なお、第１実施例〜第３実施例についての作
用は類似するので、ここでは代表例としての第１実施例
の作用についてのみ説明する。Next, the operation of the flat plate induction heating coil device according to the present invention will be described. Since the operations of the first to third embodiments are similar, only the operation of the first embodiment as a representative example will be described here.

平板１を誘導加熱するには、電源２，４から主コイル２
３と補助コイル２４，２４へ電流を流しながら平板１を
矢印の方向へ搬送する。For induction heating of the flat plate 1, the main coils 2 are fed from the power sources 2 and 4.
The flat plate 1 is conveyed in the direction of the arrow while applying a current to the coil 3 and the auxiliary coils 24, 24.

板幅Ｗの異なる平板１を誘導加熱するには、補助コイル
２４の補助コイル導体２５ａ，２５ｂのピッチを板幅Ｗ
に合わせて移動するか又は補助コイル２４のみを交換す
る一方、主コイル２３の主コイル導体２１ａ〜２１ｆの
ピッチＰ１〜Ｐ３を変え、板幅方向での温度が均一とな
るように調整したのちに誘導加熱を行えばよい。In order to induction-heat flat plates 1 having different plate widths W, the pitch of the auxiliary coil conductors 25a and 25b of the auxiliary coil 24 is set to the plate width W.
The main coil conductors 21a to 21f of the main coil 23 are changed in pitch P 1 to P 3 while the auxiliary coil 24 is moved in accordance with the above, and the temperature in the plate width direction is adjusted to be uniform. Induction heating may be performed later.

主コイル導体２１ａ〜２１ｆ、補助コイル導体２５ａ，
２５ｂのピッチを変えるには、第４図に示すボルト４２
に螺合した図示しないナットをゆるめ、主コイル導体２
１ａ〜２１ｆ又は補助コイル導体２５ａ，２５ｂを移動
したのち再びナットを締め付ければよい。Main coil conductors 21a to 21f, auxiliary coil conductor 25a,
To change the pitch of 25b, bolt 42 shown in FIG.
Loosen the nut (not shown) screwed to the main coil conductor 2
After moving 1a to 21f or the auxiliary coil conductors 25a and 25b, the nut may be tightened again.

平板１を加熱するための誘起電流が平板１の表面に生じ
るのは主コイル導体とこの主コイル導体どうしを接続す
る接続導体とが閉ループを形成する区間であり、本考で
は閉ループを形成する区間には補助コイルを配置してい
ないのことから、閉ループを形成する区間での主コイル
導体どうしの接近を妨害する部材がなく、閉ループを形
成する主コイル導体間のピッチＰ１〜Ｐ３を最小の値で
ある零まで小さくできる。したがって、板幅Ｗの十分に
小さい平板でも板幅方向へ均一温度となるように誘導加
熱することができる。しかし、板幅Ｗが既存の主コイル
及び補助コイルで対処可能な範囲以外である場合に主コ
イルを交換する必要がある点は従来と同じである。The induced current for heating the flat plate 1 is generated on the surface of the flat plate 1 in the section where the main coil conductor and the connection conductor connecting the main coil conductors form a closed loop, and in the present consideration, the section where the closed loop is formed. Since there is no auxiliary coil disposed in the main coil conductors, there is no member that hinders the main coil conductors from approaching each other in the section forming the closed loop, and the pitch P 1 to P 3 between the main coil conductors forming the closed loop is minimized. It can be reduced to zero, which is the value of. Therefore, even a flat plate having a sufficiently small plate width W can be induction-heated so as to have a uniform temperature in the plate width direction. However, the main coil needs to be replaced when the plate width W is out of the range that can be handled by the existing main coil and auxiliary coil, as in the conventional case.

なお前記の第１実施例および第３実施例では、閉ループ
区間と開ループ区間を有する主コイルにおいて、主コイ
ルによる平板の加熱が行われない開ループ区間を利用し
て、この開ループ区間に補助コイルを配設するようにし
たので、誘導加熱コイル装置の全体の長さを短くするこ
とができるとともに、短い距離内で加熱を行うことから
加熱電気効率を向上せしめる作用が生じる。In the first and third embodiments described above, in the main coil having the closed loop section and the open loop section, the open loop section in which the flat coil is not heated by the main coil is used to assist the open loop section. Since the coil is arranged, the entire length of the induction heating coil device can be shortened, and since heating is performed within a short distance, there is an effect of improving heating electric efficiency.

なお、本実施例では補助コイルを開ループをなす主コイ
ル導体間に配置したが、主コイル導体間以外の主コイル
の前後やまたは主コイルから離れた位置に配置してもよ
い。主コイルや補助コイルは第１実施例〜第３実施例に
示す構成に限定されるものではなく、その他にいろいろ
な構成が考えられる。また、コイル導体に鉄心を取り付
けた主コイル導体や補助コイル導体を用いることに限定
されるものではなく、コイル導体のみでもよい。更に、
主コイルと補助コイルとに同一電源から給電するように
してもよい。Although the auxiliary coil is arranged between the main coil conductors forming an open loop in this embodiment, it may be arranged before or after the main coil other than between the main coil conductors or at a position apart from the main coil. The main coil and the auxiliary coil are not limited to the configurations shown in the first to third embodiments, and various other configurations are possible. Further, the main coil conductor and the auxiliary coil conductor in which the iron core is attached to the coil conductor are not limited to being used, and only the coil conductor may be used. Furthermore,
Power may be supplied to the main coil and the auxiliary coil from the same power source.

Ｈ．考案の効果 以上説明したように本考案による平板の誘導加熱コイル
装置によれば、主コイルにおける平板の板幅方向へ板幅
を越えて延在する主コイル導体どうしのピッチが変えら
れるとともに、主コイル導体と主コイル導体どうしを接
続する接続導体とが閉ループを形成する区間以外の範囲
に補助コイルを配置したので、主コイルが平板１に誘起
電流を発生させる主コイルの閉ループ区間では主コイル
導体間のピッチを最小の値である零まで小さく調整でき
る。従って、平板の板幅方向での中央部の加熱を両側の
加熱よりも相対的により多く増大でき、板幅のより小さ
な平板でも板幅方向へ均一に誘導加熱できる。H. As described above, according to the flat plate induction heating coil device of the present invention, the pitch of the main coil conductors extending over the plate width in the plate width direction of the flat plate in the main coil can be changed and Since the auxiliary coil is arranged in a range other than the section where the coil conductor and the connecting conductor connecting the main coil conductors form a closed loop, the main coil conductor is in the closed loop section of the main coil in which the main coil generates an induced current in the flat plate 1. The pitch between can be adjusted to a minimum value of zero. Therefore, the heating of the central portion of the flat plate in the plate width direction can be increased relatively more than the heating on both sides, and even a flat plate having a smaller plate width can be uniformly induction-heated in the plate width direction.

【図面の簡単な説明】[Brief description of drawings]

第１図〜第４図は本考案による誘導加熱コイル装置の実
施例に係り、第１図は第１実施例を示す構成図、第２図
は第２実施例を示す構成図、第３図は第３実施例を示す
構成図、第４図は第１図の一部を拡大して示す拡大図、
第５図は従来の誘導加熱コイル装置を示す構成図、第６
図（ａ），（ｂ）は従来の誘導加熱コイル装置を用いて
板幅の異なる平板を加熱した場合の温度分布を夫々示す
グラフ、第７図〜第９図は均等加熱の原理に係り、第７
図（ａ），（ｂ）は例としてあげた誘導加熱コイル装置
の構成図、第８図，第９図は第７図（ａ）又は第７図
（ｂ）の誘導加熱コイル装置によるものであり、第８図
（ａ），（ｂ），（ｃ）は主コイル導体のピッチの大き
さを変えた場合の板幅方向の温度分布を示すグラフ、第
９図（ａ），（ｂ），（ｃ）は主コイル導体のピッチの
大きさを変えた場合に平板に生じる誘起電流の循環流路
を示す説明図、第１０図（ａ），（ｂ），は改良案とし
ての誘導加熱コイル装置の構成図である。 １……平板、２，４……電源、２１ａ〜２１ｆ，３０ａ
〜３０，３７ａ〜３７ｆ……主コイル導体、２３，２
８，３５……主コイル、２４，２９，３６……補助コイ
ル、２５ａ，２５ｂ，３２ａ，３２ｂ，３９ａ〜３９ｄ
……補助コイル導体、４１……長孔、４２……ボルト、
Ｗ……板幅、Ｐ１〜Ｐ６……ピッチ。1 to 4 relate to an embodiment of an induction heating coil device according to the present invention, FIG. 1 is a configuration diagram showing a first embodiment, FIG. 2 is a configuration diagram showing a second embodiment, and FIG. Is a block diagram showing a third embodiment, FIG. 4 is an enlarged view showing an enlarged part of FIG. 1,
FIG. 5 is a block diagram showing a conventional induction heating coil device, and FIG.
FIGS. 7A and 7B are graphs showing temperature distributions when flat plates having different widths are heated using a conventional induction heating coil device, and FIGS. 7 to 9 relate to the principle of uniform heating, 7th
Figures (a) and (b) are configuration diagrams of the induction heating coil device given as an example, and Figs. 8 and 9 show the induction heating coil device of Fig. 7 (a) or Fig. 7 (b). Yes, FIGS. 8 (a), (b), and (c) are graphs showing the temperature distribution in the plate width direction when the pitch size of the main coil conductor is changed, and FIGS. 9 (a) and 9 (b). , (C) are explanatory views showing the circulation flow path of the induced current generated in the flat plate when the pitch size of the main coil conductor is changed, and FIGS. 10 (a) and 10 (b) are induction heating as an improved plan. It is a block diagram of a coil device. 1 ... Flat plate, 2, 4 ... Power supply, 21a to 21f, 30a
〜30,37a〜37f …… Main coil conductor, 23,2
8, 35 ... Main coil, 24, 29, 36 ... Auxiliary coil, 25a, 25b, 32a, 32b, 39a to 39d
...... Auxiliary coil conductor, 41 ...... elongated hole, 42 ...... bolt,
W: board width, P 1 to P 6, pitch.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】搬送ラインに沿って搬送される長尺な平板
の板幅方向へ板幅を越えて延在するとともに平板を挟ん
で対向する一対の主コイル導体を平板の長さ方向へ複数
組配置して直交磁束形の主コイルを構成する一方、平板
の板幅方向の両側縁の内側にて平板の長さ方向へ延在す
るとともに平板を挟んで対向する二対の補助コイル導体
を平板の長さ方向へ一組以上配置して直交磁束形の補助
コイルを構成し主コイルと補助コイルとを平板の搬送方
向に沿って配設するとともに、主コイル及び補助コイル
を高周波又は中周波の電源に接続した平板の誘導加熱コ
イル装置において、 前記主コイル導体と主コイル導体どうしを接続する接続
導体とが閉ループを形成する区間以外の範囲に前記補助
コイルを配置し、閉ループ区間における平板の長さ方向
での主コイル導体間のピッチを変え得る構成としたこと
を特徴とする平板の誘導加熱コイル装置。1. A plurality of a pair of main coil conductors extending in the plate width direction of a long flat plate conveyed along a conveyance line across the plate width and facing each other across the plate in the length direction of the plate. A pair of auxiliary coil conductors that extend in the length direction of the flat plate inside the both side edges of the flat plate in the plate width direction and that face each other across the flat plate are formed while the main coils of the orthogonal magnetic flux type are arranged in pairs. One or more sets are arranged in the length direction of the flat plate to form an orthogonal magnetic flux type auxiliary coil, the main coil and the auxiliary coil are arranged along the conveyance direction of the flat plate, and the main coil and the auxiliary coil are high frequency or medium frequency. In a flat plate induction heating coil device connected to the power source of, the main coil conductor and the connecting conductor connecting the main coil conductors to each other, the auxiliary coil is arranged in a range other than a section forming a closed loop, and the flat coil in the closed loop section. Length A flat plate induction heating coil device having a configuration in which the pitch between the main coil conductors can be changed depending on the direction.
JP6979787U 1987-05-11 1987-05-11 Flat plate induction heating coil device Expired - Lifetime JPH0616470Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6979787U JPH0616470Y2 (en) 1987-05-11 1987-05-11 Flat plate induction heating coil device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6979787U JPH0616470Y2 (en) 1987-05-11 1987-05-11 Flat plate induction heating coil device

Publications (2)

Publication Number Publication Date
JPS63178097U JPS63178097U (en) 1988-11-17
JPH0616470Y2 true JPH0616470Y2 (en) 1994-04-27

Family

ID=30910851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6979787U Expired - Lifetime JPH0616470Y2 (en) 1987-05-11 1987-05-11 Flat plate induction heating coil device

Country Status (1)

Country Link
JP (1) JPH0616470Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005019374A (en) * 2003-05-30 2005-01-20 Tokyo Denki Univ Portable electromagnetic induction heating device
WO2024024117A1 (en) * 2022-07-29 2024-02-01 日本製鉄株式会社 Induction heating device for metal sheet, processing equipment for metal sheet, and induction heating method for metal sheet

Also Published As

Publication number Publication date
JPS63178097U (en) 1988-11-17

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