JPS6116489A - Induction heater - Google Patents
Induction heaterInfo
- Publication number
- JPS6116489A JPS6116489A JP13753384A JP13753384A JPS6116489A JP S6116489 A JPS6116489 A JP S6116489A JP 13753384 A JP13753384 A JP 13753384A JP 13753384 A JP13753384 A JP 13753384A JP S6116489 A JPS6116489 A JP S6116489A
- Authority
- JP
- Japan
- Prior art keywords
- iron core
- heated
- inner diameter
- coil
- core
- 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
Links
Landscapes
- General Induction Heating (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、筒状被加熱材、例えば鋼管、ストリップコイ
ル等の内径部を加熱する誘導加熱装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in an induction heating device for heating the inner diameter of a cylindrical heated material, such as a steel pipe or a strip coil.
従来技術
筒状被加熱材、例えば鋼管、ス) リップコイル等の内
径部の加熱方法の一つに誘導加熱法がある。BACKGROUND ART One of the methods for heating the inner diameter portion of a cylindrical heated material, such as a steel pipe or slip coil, is an induction heating method.
この誘導加熱方法は励磁コイルと一体となった鉄心を被
加熱材の加熱部1て挿入して電磁誘導作用により被加熱
材を加熱する方法である。This induction heating method is a method in which an iron core integrated with an excitation coil is inserted into a heating section 1 of a material to be heated, and the material to be heated is heated by electromagnetic induction.
牙2図に、ストリップコイルを被加熱材とし、その内径
部を誘導加熱する方法の原理の一例を示す。Fig. 2 shows an example of the principle of a method in which a strip coil is used as a material to be heated and the inner diameter portion thereof is heated by induction.
被加熱材であるス) I)ツブコイル4の内径部を加熱
するときは、−励磁コイル2と一体となった鉄心3をス
トリップコイル4の内径部に挿入して、誘導加熱装置制
御盤6に収納さ乃でいる電磁接触器5を閉じ、電源1が
供給する任意の電圧■、周波数fを励磁コイル2眞投入
すると、励磁コイル2によって誘起される交番磁束φと
の電磁誘導作用1(よりストリップコイル4にジュール
熱が発生し加熱される。I) When heating the inner diameter part of the strip coil 4, which is the material to be heated, - insert the iron core 3 integrated with the excitation coil 2 into the inner diameter part of the strip coil 4, and connect it to the induction heating device control panel 6. When the stored electromagnetic contactor 5 is closed and an arbitrary voltage and frequency f supplied by the power supply 1 are applied to the excitation coil 2, an electromagnetic induction effect 1 (from Joule heat is generated in the strip coil 4 and heated.
ス)・リップコイル4を加熱する場合、鉄心3内にスト
リップコイル4の内径部を挿入するため、鉄心の一部は
分割可能になっている。加熱するときは、この分割点を
再び結合させて閉磁路鉄ノbを作るわけであるが、ここ
での結合が悪いと、結合部で空隙が生じ磁気抵抗が太き
(なり、交番磁束が減少する。S) When heating the lip coil 4, the inner diameter part of the strip coil 4 is inserted into the iron core 3, so a part of the iron core can be divided. When heating, this dividing point is reconnected to create a closed magnetic path iron nob, but if the connection is poor, a gap will be created at the joint and the magnetic resistance will become thicker (and the alternating magnetic flux will increase). Decrease.
従来の分割型鉄心構造は、則・3図に示すように一方を
直線形の固定鉄心3aとし、他方の側をコ字形の可動鉄
心31)で片持ち支持構造として、ストリップコイル4
の内径部に、前記コの字形の可動鉄心3bを挿入して結
合し、ている。The conventional split core structure has a linear fixed core 3a on one side and a U-shaped movable core 31) on the other side, as shown in Figure 3, and has a cantilevered support structure with a strip coil 4.
The U-shaped movable iron core 3b is inserted and coupled into the inner diameter portion of the shaft.
このとぎストリップコイル40幅が広い場合には、コ字
形鉄心3bの幅方向長さが長くなりミ先端部にタワミが
生じ、結合部分で空隙が発生し易くなる。また、ストリ
ップコイル4の挿入時、コ字形鉄心3bが待機する大き
なスペースが必要となる等の欠点が生ずる。When the width of the sharpening strip coil 40 is wide, the length in the width direction of the U-shaped iron core 3b becomes long, and bending occurs at the tip of the U-shaped core 3b, making it easy to create a gap at the joint portion. Further, when the strip coil 4 is inserted, a large space is required for the U-shaped iron core 3b to wait.
このような従来技術での誘導加熱装置の構成及び作用効
果を略説する。The structure and operation and effects of such a conventional induction heating device will be briefly explained.
7は被加熱材移動台車で、ストリップコイル4はこの台
車により、加熱する位置まで運ばれる。Reference numeral 7 denotes a cart for moving the material to be heated, and the strip coil 4 is carried by this cart to a position to be heated.
移動鉄心3bは、機枠10内に設けられ且つモータ8に
より垂直移動する台車] 1 a 、 J、 1 bに
固定されたレール13に水平移動自在に設けら牙また台
車12に垂下さ牙1ている。而して、その鉄心3bの水
平部であって、ストリップコイル・1の内径部内に挿入
さ」する水平部には、励磁コイル2が設けられている。The movable iron core 3b is provided within the machine frame 10 and is vertically moved by a motor 8. The movable iron core 3b is horizontally movably provided on rails 13 fixed to the carriages 1a, J, 1b, and is suspended from the carriage 12. ing. An excitation coil 2 is provided in a horizontal portion of the iron core 3b that is inserted into the inner diameter of the strip coil 1.
その水平部をコイル4の内径部内に挿入するにあたって
は、台車112.11bを矢印Y方向に上下動させ、レ
ール13を移動させて、高さセンタリングを行い、鉄心
3bを適切な位置に達せしめたのち、水平移動位置9に
より台車12を矢印Z方向に水平移動させ、励磁コイル
2を有する水平部を、ストリップコイル4の内径部に挿
入し、鉄心3bを、固定鉄心3aK結合する。To insert the horizontal part into the inner diameter part of the coil 4, the cart 112.11b is moved up and down in the direction of the arrow Y, the rail 13 is moved, and height centering is performed to bring the iron core 3b to an appropriate position. Thereafter, the trolley 12 is horizontally moved in the direction of arrow Z at the horizontal movement position 9, the horizontal part having the excitation coil 2 is inserted into the inner diameter part of the strip coil 4, and the iron core 3b is coupled to the fixed iron core 3aK.
このように、鉄心3 +)の水平部には励磁コイル2が
乗っているので、こわが長し・と、鉄心3bKタワミが
生じ、そのため、固定鉄心3aとの結合部に空隙が発生
し閉回路が構成されなくなってしまう。これは重大な問
題である。In this way, since the excitation coil 2 is placed on the horizontal part of the iron core 3+), the stiffness becomes long and the iron core 3bK deflects, which creates a gap at the joint with the fixed iron core 3a and closes it. The circuit will no longer be configured. This is a serious problem.
発明が解消しようとする問題点
本発明は、筒状被加熱材の内径部を、閉回路を構成する
分割可能鉄心を有する誘導加熱装置で加熱するときに生
ずることのある、上に述べたような鉄心におけるタワミ
の発生姥よる結合部の空隙の発生を解消しようとするも
のである。Problems to be Solved by the Invention The present invention solves the problems described above that may occur when the inner diameter of a cylindrical heated material is heated with an induction heating device having a splittable iron core forming a closed circuit. This is an attempt to eliminate the occurrence of voids in joints due to the occurrence of deflection in iron cores.
問題点を解決するだめの手段
本発明では、該閉回路な構成する分割可能鉄心ン、相対
峙し7て配置さ、)またはy同形のコの字形鉄心2個で
構成し、そねら2個のコの字形鉄心は夫々、被加熱4J
の内径部内に挿入さ、hる水平部に励磁コイルを備えて
おり、そ才9ら鉄心を、所定位置に来た被加熱拐の内径
部如挿入し結合させて閉回路を構成ずろことにより、前
記の問題を解決する。Means for Solving the Problems In the present invention, the dividable iron cores constituting the closed circuit are arranged opposite to each other (7) or two U-shaped iron cores having the same shape as Y, and two cores are provided. Each U-shaped core is heated to 4J.
An excitation coil is installed in the horizontal part of the heated coil, and the iron core is inserted into the inner diameter of the heating element at a predetermined position and connected to form a closed circuit. , solves the above problem.
実施例 次に本発明の火力布例を】・j図眞より説明する。Example Next, an example of the thermal power fabric of the present invention will be explained with reference to Figure 1.
図中、矛2,3図蹟顕わわた符号と同じものは、同じ意
味をもつものとする。In the figures, the same symbols as those appearing in the figures 2 and 3 have the same meaning.
即ち、4し主被加熱月であるストリップコイル、7ばそ
の移動台車、10は機枠、] 1 a 、 1 ]−b
は垂直移動台車、8はその、駆動モータ、13はレール
である。That is, 4 is the strip coil which is the main heating target, 7 is the movable trolley, 10 is the machine frame, ]1a, 1]-b
1 is a vertically movable cart, 8 is its drive motor, and 13 is a rail.
さて、3 a’ + 3 b’は、ストリップコイル4
をはさみ相対峙して配置されているはg同形のコの字形
移動鉄心であり、2a 、2bはそ1lI7ら鉄心のス
トリップコイル4の内径部内に挿入される水平部に設け
られた励磁コイルである。各鉄心3 a’ 、 3b′
は夫々、レール13上を水平移動する台車I2a 、
12bに垂下している。−9a、9bは夫々、台車]
2 a、、 12 bを水平移動させる装置である。Now, 3 a' + 3 b' is the strip coil 4
2a and 2b are excitation coils installed in the horizontal part inserted into the inner diameter of the strip coil 4 of the core. be. Each iron core 3a', 3b'
are the carts I2a that move horizontally on the rails 13,
It hangs down to 12b. -9a and 9b are trolleys respectively]
This is a device that horizontally moves 2a, 12b.
次に本例装置の作動を説明する、
ストリップコイル4は被加熱材移動台車7で加熱する位
置まで搬送され固定さ剌る。次にレール】3上を移動す
る台車12a、12bに垂下されたコの字形鉄心3 a
’ 、 31)’と励磁コイル2a、21)ヲ、ストリ
ップコイル・1の内径部穴に挿入するプ4−め、垂直移
動台車1 ] a 、 1 l bを、モータ8で矢印
Y方向に上下動させて、レール】3の高さを合わせる。Next, the operation of the apparatus of this embodiment will be explained. The strip coil 4 is transported to a position where it is heated by a heated material moving cart 7 and is fixed therein. Next, the U-shaped iron core 3a is suspended from the trolleys 12a and 12b moving on the rail]3.
', 31)' and the excitation coils 2a, 21) are inserted into the inner diameter hole of the strip coil 1, and the vertically movable trolley 1]a, 1lb is moved up and down in the direction of the arrow Y by the motor 8. Move it to match the height of rail]3.
その後、台車12a、12bK垂下さハたコの字形鉄心
3 a’ 、 3 b’と励磁コイル2 a。After that, the carts 12a, 12bK are hung with box-shaped iron cores 3a', 3b' and the excitation coil 2a.
2bを水平移動装置(例えば油圧、電動シリンダー )
9 a 、 9 bで矢印Z方向に水平移動させて、
点線で示すように両鉄心3 a’ + 31)’の分割
面を正確に結合さ辻て閉磁路を成す鉄心とし、ストリッ
プコイル4の加熱を行う。加熱が終れば水平移動装置り
a 、 9 bで、台車12a、12bを逆に移動し
てコの字形鉄心3 a’ 、 3 b’の結合を解き、
待機位置まで移動させる。2b as a horizontal movement device (e.g. hydraulic, electric cylinder)
Move horizontally in the direction of arrow Z with 9a and 9b,
As shown by the dotted lines, the split surfaces of both cores 3a'+31)' are accurately joined together to form a core forming a closed magnetic path, and the strip coil 4 is heated. When the heating is finished, horizontal moving devices a and 9b move the carts 12a and 12b in the opposite direction to uncouple the U-shaped cores 3a' and 3b'.
Move it to the standby position.
発明の効果
以上の説明から明らかなように本発明装置は待機スペー
スは従来とほぼ同じで移動鉄心3bの水平方向の長さを
従来の半分にでき、しかも励磁コイル2も半分づつに分
割出来るため小型となり、片持ちさりまた鉄心の支持点
に発生するモーメントも従来方式の約2になり、タワミ
な小さく出来、結合部の空隙の発生もなくなり、誘導加
熱の効率を高めることが出来る。Effects of the Invention As is clear from the above explanation, in the device of the present invention, the waiting space is almost the same as the conventional one, the horizontal length of the movable core 3b can be halved compared to the conventional one, and the excitation coil 2 can also be divided in half. It is smaller, the moment generated at the cantilever and the support point of the iron core is about 2 times that of the conventional method, it can be made smaller with more flexibility, there is no gap in the joint, and the efficiency of induction heating can be increased.
矛1図は本発明装置の一例の説明図、
剖・2図はストリップコイルの内径部の誘導加熱方法の
説明図、Figure 1 is an explanatory diagram of an example of the device of the present invention, Figure 2 is an explanatory diagram of an induction heating method for the inner diameter part of a strip coil,
Claims (1)
材の内径部を加熱する誘導加熱装置において、ほぼ同形
のコの字形鉄心2個を対峙して配置し、該コの字形鉄心
の各々に、被加熱材の内径部内に挿入される水平部に励
磁コイルを設け、加熱時は該コの字形鉄心を結合して、
閉回路を構成する鉄心にすることを特徴とする誘導加熱
装置。(1) In an induction heating device that heats the inner diameter part of a cylindrical heated material having a split core constituting a closed circuit, two U-shaped cores of substantially the same shape are arranged facing each other, and the U-shaped core An excitation coil is provided in the horizontal part inserted into the inner diameter of the material to be heated, and when heating, the U-shaped iron core is connected,
An induction heating device characterized by an iron core forming a closed circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13753384A JPS6116489A (en) | 1984-07-03 | 1984-07-03 | Induction heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13753384A JPS6116489A (en) | 1984-07-03 | 1984-07-03 | Induction heater |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6116489A true JPS6116489A (en) | 1986-01-24 |
Family
ID=15200902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13753384A Pending JPS6116489A (en) | 1984-07-03 | 1984-07-03 | Induction heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6116489A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5686478A (en) * | 1979-12-17 | 1981-07-14 | Mitsubishi Electric Corp | Induction heater |
-
1984
- 1984-07-03 JP JP13753384A patent/JPS6116489A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5686478A (en) * | 1979-12-17 | 1981-07-14 | Mitsubishi Electric Corp | Induction heater |
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