JP2994018B2 - Induction heating coil device - Google Patents

Induction heating coil device

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Publication number
JP2994018B2
JP2994018B2 JP2276550A JP27655090A JP2994018B2 JP 2994018 B2 JP2994018 B2 JP 2994018B2 JP 2276550 A JP2276550 A JP 2276550A JP 27655090 A JP27655090 A JP 27655090A JP 2994018 B2 JP2994018 B2 JP 2994018B2
Authority
JP
Japan
Prior art keywords
iron core
induction heating
heating coil
slab material
coil device
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 - Fee Related
Application number
JP2276550A
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Japanese (ja)
Other versions
JPH04154078A (en
Inventor
光政 塚田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2276550A priority Critical patent/JP2994018B2/en
Publication of JPH04154078A publication Critical patent/JPH04154078A/en
Application granted granted Critical
Publication of JP2994018B2 publication Critical patent/JP2994018B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は、スラブ材のエッジ部等を局部的に誘導加
熱するための鉄心付き誘導加熱コイル装置に関するもの
である。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating coil device with an iron core for locally inductively heating an edge portion or the like of a slab material.

［従来の技術］ 第４図は、例えば特公昭61−39716号公報に記載され
た従来のスラブ材のエッジ部を局部的に誘導加熱する誘
導加熱コイル装置の使用状態を示す正面図（ａ）と側面
図（ｂ）である。図において、（１）はスラブ材、
（３）は巻線、（４）は交流電源、（８）は加熱パター
ン、（９）はＥ型鉄心である。また、（10）は正面側か
ら見た磁束、（11）および（12）は側面側から見た磁束
を表わしている。[Prior Art] FIG. 4 is a front view showing a state of use of a conventional induction heating coil device described in, for example, Japanese Patent Publication No. 61-39716, which locally heats an edge portion of a slab material. It is a side view (b). In the figure, (1) is a slab material,
(3) is a winding, (4) is an AC power supply, (8) is a heating pattern, and (9) is an E-shaped iron core. Also, (10) represents the magnetic flux viewed from the front side, and (11) and (12) represent the magnetic flux viewed from the side.

次に動作について説明する。巻線（３）を有する鉄心
（９）はスラブ材（１）のエッジ部の上部、側部、下部
の三方向に配置され、スラブ材（１）は矢印の方向に送
られ、スラブ材のエッジ部は加熱パターン（８）のよう
に誘導加熱される。Next, the operation will be described. The iron core (9) having the winding (3) is arranged in three directions of an upper portion, a side portion, and a lower portion of an edge portion of the slab material (1), and the slab material (1) is fed in the direction of an arrow, and The edge portion is induction-heated as in the heating pattern (8).

誘導加熱コイルは、Ｅ型鉄心（９）に巻線（３）を巻
付け、交流電源（４）に接続されている。巻線（３）に
交流電流が流れると、磁束が発生する。正面図（ａ）側
から見ると磁束は（10）のように発生し、側断面図
（ｂ）から見ると（11）および（12）のように磁束が発
生する。上記磁束によりスラブ材（１）のエッジ部は誘
導加熱され、斜線部の加熱パターン（８）が得られる。The induction heating coil has a winding (3) wound around an E-shaped iron core (9) and is connected to an AC power supply (4). When an alternating current flows through the winding (3), a magnetic flux is generated. When viewed from the front view (a) side, the magnetic flux is generated as shown in (10), and when viewed from the side sectional view (b), the magnetic flux is generated as shown in (11) and (12). The edge portion of the slab material (1) is induction-heated by the magnetic flux, and a heating pattern (8) in a hatched portion is obtained.

［発明が解決しようとする課題］ 従来の誘導加熱コイル装置は、第４図（ｂ）に示す磁
束（11）がスラブ材のエッジ部を加熱するのに最も有効
に使用される磁束であるが、上部誘導加熱コイルと側部
誘導加熱コイルに渡る部分および側部誘導加熱コイルか
ら下部誘導加熱コイルへ渡る部分で、磁束が空中を通る
ため、スラブ材のエッジを加熱する誘導加熱効率が45〜
50％に過ぎないという問題点があった。[Problems to be Solved by the Invention] In the conventional induction heating coil device, the magnetic flux (11) shown in FIG. 4 (b) is the most effective magnetic flux for heating the edge of the slab material. Since the magnetic flux passes through the air at the portion between the upper induction heating coil and the side induction heating coil and the portion from the side induction heating coil to the lower induction heating coil, the induction heating efficiency for heating the edge of the slab material is 45 to
There was a problem that it was only 50%.

この発明は上記のような課題を解決するためになされ
たもので、スラブ材のエッジ部を高効率で誘導加熱する
ことができる誘導加熱コイル装置を得ることを目的とす
る。The present invention has been made to solve the above-described problem, and has as its object to provide an induction heating coil device capable of induction heating an edge portion of a slab material with high efficiency.

［課題を解決するための手段］ この発明に係る誘導加熱コイル装置は、Ｅ字の上、下
辺先端に対向辺が形成された形状をなしスラブ材のエッ
ジ部分を囲むための鉄心と、この鉄心の３箇所の突部の
うち少なくとも２箇所の上記突部の周囲に巻回され交番
電流を印加される巻線とを備えた誘導加熱コイル装置に
おいて、上記鉄心は、Ｅ字の上、下辺先端に形成された
上記対向辺の間隙が調整可能に構成されているものであ
る。Means for Solving the Problems An induction heating coil device according to the present invention has an iron core for enclosing an edge portion of a slab material having a shape in which opposing sides are formed at upper and lower ends of an E-shape, and the iron core. Wherein the winding is wound around at least two of the three protrusions and to which an alternating current is applied. The gap between the opposing sides formed in the above is configured to be adjustable.

また、上記鉄心は、上下に２分割されているものであ
る。The iron core is vertically divided into two parts.

また、上記鉄心は、Ｅ字の上、下辺の一方の辺とＥ字
の上記一方の辺を除く部位とに分割構成され、上記一方
の辺が、上記対向辺の間隙を変更できるように、上記一
方の辺の根元部を上記一方の辺を除く部位に回動可能に
連結されているものである。Also, the iron core is divided into one of upper and lower sides of the E-shape and a part excluding the one side of the E-shape, and the one side can change a gap between the opposed sides. The base of the one side is rotatably connected to a portion excluding the one side.

［作 用］ この発明においては、鉄心がＥ字の上、下辺先端に対
向辺が形成された形状をなしスラブ材のエッジ部分を囲
むように形成されているので、鉄心の３箇所の突起の少
なくとも２箇所の突起に巻回された巻線に交流電流を流
すことにより発生し、スラブ材のエッジ部分を誘導加熱
する磁束のほとんどが鉄心を通る。そして、鉄心は、Ｅ
字の上、下辺先端に形成された対向辺の間隙が調整可能
に構成されているので、厚みの異なるスラブ材に対して
も、対向辺の間隙を調整することにより、スラブ材のエ
ッジ部分を囲むように鉄心がセットされる。[Operation] In the present invention, since the iron core has a shape in which the opposing sides are formed at the top and bottom ends of the E-shape and surrounds the edges of the slab material, the three projections of the iron core are formed. Most of the magnetic flux that is generated by applying an alternating current to the winding wound around at least two projections and that induces and heats the edge portion of the slab material passes through the iron core. And the iron core is E
Since the gap between the opposing sides formed at the upper and lower ends of the character is configured to be adjustable, even for slab materials having different thicknesses, by adjusting the gap between the opposing sides, the edge of the slab material can be adjusted. An iron core is set to surround it.

また、鉄心は、上下に２分割されているので、分割さ
れた鉄心を上下に移動させることにより、対向辺の間隙
がスラブ材の厚みに合わせて調整される。Further, since the iron core is vertically divided into two parts, the gap between the opposing sides is adjusted according to the thickness of the slab material by moving the divided iron core vertically.

また、鉄心は、Ｅ字の上、下辺の一方の辺とＥ字の上
記一方の辺を除く部位とに分割構成され、一方の辺が、
対向辺の間隙を変更できるように、一方の辺の根元部を
一方の辺を除く部位に回動可能に連結されているので、
一方の辺の根元部を一方の辺を除く部位に対して回動さ
せることにより、対向辺の間隙がスラブ材の厚みに合わ
せて調整される。The iron core is divided into one of the upper and lower sides of the E-shape and a portion excluding the one side of the E-shape.
Since the root of one side is rotatably connected to the part excluding one side so that the gap between the opposite sides can be changed,
By rotating the root of one side with respect to the part excluding the one side, the gap between the opposite sides is adjusted according to the thickness of the slab material.

［実施例］ 以下、この発明の実施例を図について説明する。第１
図はこの発明の参考例としての誘導加熱コイル装置の使
用状態を示す正面図（ａ）と側断面図（ｂ）である。図
において、スラブ材（１）を囲む鉄心（２）は、Ｅ字
［同図（ｂ）では左右逆になっている］の上，下辺（2
a）の先端に対向辺（2b）が形成された形状になってい
る。Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First
The drawings are a front view (a) and a side sectional view (b) showing a use state of an induction heating coil device as a reference example of the present invention. In the figure, an iron core (2) surrounding a slab material (1) has upper and lower sides (2 in FIG.
It has a shape in which the opposite side (2b) is formed at the tip of a).

（３）は巻線、（４）は交流電源、（５）は正面側か
ら見た磁束、（６）および（７）は側面側から見た磁束
である。(3) is a winding, (4) is an AC power supply, (5) is a magnetic flux viewed from the front side, and (6) and (7) are magnetic fluxes viewed from the side.

次に動作について説明する。スラブ材（１）は矢印の
方向に送られスラブ材（１）のエッジ部は加熱パターン
（８）のように誘導加熱される。鉄心（２）はスラブ材
（１）のエッジ部分を∃状に囲むように配置され、鉄心
（２）の突部に巻回された巻線（３）は交流電源（４）
に接続されている。巻線（３）に交流電流が流れると、
磁束が発生する。正面図（ａ）側から見ると磁束は
（５）のように発生し、側断面図（ｂ）から見ると
（６）および（７）のように磁束が発生する。上記の磁
束により、スラブ材（１）のエッジ部は誘導加熱され、
斜視部の加熱パターン（８）が得られる。このとき、磁
束（６）はほとんど鉄心（２）を通るので、加熱効率は
70〜75％と向上する。Next, the operation will be described. The slab material (1) is fed in the direction of the arrow, and the edge of the slab material (1) is induction-heated as in the heating pattern (8). The iron core (2) is arranged so as to surround the edge portion of the slab material (1) in a triangle shape, and the winding (3) wound around the protrusion of the iron core (2) is an AC power supply (4).
It is connected to the. When an alternating current flows through the winding (3),
Magnetic flux is generated. When viewed from the front view (a) side, the magnetic flux is generated as shown in (5), and when viewed from the side sectional view (b), the magnetic flux is generated as shown in (6) and (7). Due to the magnetic flux, the edge of the slab material (1) is induction-heated,
The heating pattern (8) of the oblique portion is obtained. At this time, since the magnetic flux (6) almost passes through the iron core (2), the heating efficiency is
70% to 75%.

なお、上記参考例では、∃状鉄心の突部３箇所に巻線
を設けたが、側面の鉄心突部には必ずしも巻線を設けな
くともよい。In the above-described reference example, the windings are provided at the three protruding portions of the 鉄 -shaped iron core, but the windings may not necessarily be provided on the iron core protruding portions on the side surfaces.

実施例1. 第２図はこの発明の実施例１に係る誘導加熱コイル装
置の使用状態を示す側断面図である。第２図において、
鉄心（２）は、上部鉄心（2c）と下部鉄心（2d）とに上
下に２分割されている。なお、他の構成は上記参考例と
同様に構成されている。First Embodiment FIG. 2 is a side sectional view showing a use state of an induction heating coil device according to a first embodiment of the present invention. In FIG.
The iron core (2) is vertically divided into an upper iron core (2c) and a lower iron core (2d). The other configuration is the same as that of the reference example.

この実施例１では、上部鉄心（2c）と下部鉄心（2d）
とを上下に移動させることにより、対向辺（2b）間の間
隙が調整される。そこで、スラブ材（１）の厚みが変わ
ったときに、上部鉄心（2c）を上方に移動させて対向辺
（2b）間の間隙をスラブ材（１）の厚みに合わせて調整
し、第２図に示されるように、鉄心（２）をスラブ材
（１）のエッジ部分を囲むように最適位置に配置する。
そこで、巻線（３）に交流電流を流して磁束を発生さ
せ、スラブ材（１）のエッジ部分を誘導加熱する。該磁
束は、ほとんど鉄心（２）を通り、上記参考例と同様の
加熱効率が得られる。In the first embodiment, the upper core (2c) and the lower core (2d)
Is moved up and down to adjust the gap between the opposing sides (2b). Therefore, when the thickness of the slab material (1) changes, the upper iron core (2c) is moved upward to adjust the gap between the opposing sides (2b) according to the thickness of the slab material (1). As shown in the drawing, the iron core (2) is arranged at an optimum position so as to surround the edge of the slab material (1).
Therefore, an alternating current is applied to the winding (3) to generate a magnetic flux, and the edge of the slab material (1) is induction-heated. The magnetic flux almost passes through the iron core (2), and the same heating efficiency as in the above reference example is obtained.

実施例2. 第３図はこの発明の実施例２に係る誘導加熱コイル装
置の使用状態を示す側断面図である。第３図において、
鉄心（２）は、上片（2e）と鉄心本体（2f）とに分割さ
れ、上片（2e）の根元部をヒンジ（13）により鉄心本体
（2f）に回動自在に連結して構成されている。尚、他の
構成は上記実施例１と同様に構成されている。Second Embodiment FIG. 3 is a side sectional view showing a use state of an induction heating coil device according to a second embodiment of the present invention. In FIG.
The core (2) is divided into an upper piece (2e) and a core body (2f), and the base of the upper piece (2e) is rotatably connected to the core body (2f) by a hinge (13). Have been. The other configuration is the same as that of the first embodiment.

この実施例２では、上片（2e）を鉄心本体（2f）に対
してヒンジ（13）周りに回動させることにより、対向辺
間の間隙が調整される。そこで、スラブ材（１）の厚み
が変わったときに、上辺（2e）をヒンジ（13）周りに回
動させて対向辺間の間隙をスラブ材（１）の厚みに合わ
せて調整し、第３図に示されるように、鉄心（２）をス
ラブ材（１）に対して最適位置に配置できる。そこで、
この実施例２においても、スラブ材（１）のエッジ部分
を誘導加熱する磁束のほとんどが鉄心（２）を通り、上
記実施例１と同様の効果が得られる。In the second embodiment, the gap between the opposing sides is adjusted by rotating the upper piece (2e) around the hinge (13) with respect to the iron core body (2f). Therefore, when the thickness of the slab material (1) changes, the upper side (2e) is rotated around the hinge (13) to adjust the gap between the opposing sides according to the thickness of the slab material (1). As shown in FIG. 3, the iron core (2) can be arranged at an optimum position with respect to the slab material (1). Therefore,
Also in the second embodiment, most of the magnetic flux for inductively heating the edge portion of the slab material (1) passes through the iron core (2), and the same effect as in the first embodiment can be obtained.

［発明の効果］ 以上のように、この発明によれば、鉄心は、Ｅ字の
上、下辺先端に形成された対向辺の間隙が調整可能に構
成されているので、スラブ材の厚みに合わせて対向辺の
間隙を調整して鉄心をスラブ材に対して最適位置に配置
できる。そこで、厚みの異なるスラブ材に対しても、ス
ラブ材のエッジ部分を誘導加熱する磁束のほとんどが鉄
心を通るようにでき、スラブ材のエッジ部を70〜75％の
高い加熱効率で加熱することができる。[Effects of the Invention] As described above, according to the present invention, since the iron core is configured such that the gap between the opposing sides formed at the upper and lower ends of the E-shape is adjustable, the iron core can be adjusted to the thickness of the slab material. By adjusting the gap between the opposing sides, the iron core can be arranged at an optimum position with respect to the slab material. Therefore, even for slabs of different thicknesses, most of the magnetic flux for induction heating the edges of the slab can pass through the iron core, and the edges of the slab are heated with a high heating efficiency of 70 to 75%. Can be.

また、鉄心は、上下に２分割されているので、分割さ
れた鉄心を上下に移動させることにより、対向辺の間隙
を調整ができる。Further, since the iron core is vertically divided into two, the gap between the opposing sides can be adjusted by vertically moving the divided iron core.

また、鉄心は、Ｅ字の上、下辺の一方の辺とＥ字の上
記一方の辺を除く部位とに分割構成され、一方の辺が、
対向辺の間隙を変更できるように、一方の辺の根元部を
一方の辺を除く部位に回動可能に連結されているので、
一方の辺の根元部を一方の辺を除く部位に対して回動さ
せることにより、対向辺の間隙を調整できる。The iron core is divided into one of the upper and lower sides of the E-shape and a portion excluding the one side of the E-shape.
Since the root of one side is rotatably connected to the part excluding one side so that the gap between the opposite sides can be changed,
By rotating the root of one side with respect to the part excluding the one side, the gap between the opposite sides can be adjusted.

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

第１図はこの発明の参考例に係る誘導加熱コイル装置の
正面図（ａ）と側断面図（ｂ）、第２図はこの発明の実
施例１に係る誘導加熱コイル装置の側断面図、第３図は
この発明の実施例２に係る誘導加熱コイル装置の側断面
図、第４図は従来の誘導加熱コイル装置の正面図（ａ）
と側断面図（ｂ）である。 （１）……スラブ材、（２）……鉄心、（2a）……上，
下辺、（2b）……対向辺、（３）……巻線、（４）……
交流電源。 なお、各図中、同一符号は同一又は相当部分を示す。FIG. 1 is a front view (a) and a side sectional view (b) of an induction heating coil device according to a reference example of the present invention. FIG. 2 is a side sectional view of the induction heating coil device according to the first embodiment of the present invention. FIG. 3 is a side sectional view of an induction heating coil device according to a second embodiment of the present invention, and FIG. 4 is a front view of a conventional induction heating coil device (a).
It is a side sectional view (b). (1) ... slab material, (2) ... iron core, (2a) ... top,
Lower side, (2b) ... Opposite side, (3) ... Winding, (4) ...
AC source. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】Ｅ字の上、下辺先端に対向辺が形成された
形状をなしスラブ材のエッジ部分を囲むための鉄心と、
この鉄心の３箇所の突部のうち少なくとも２箇所の上記
突部の周囲に巻回され交番電流を印加される巻線とを備
えた誘導加熱コイル装置において、上記鉄心は、Ｅ字の
上、下辺先端に形成された上記対向辺の間隙が調整可能
に構成されていることを特徴とする誘導加熱コイル装
置。1. An iron core for enclosing an edge portion of a slab material, the core having a shape in which opposing sides are formed at upper and lower ends of an E-shape,
A winding wound around at least two of the three protrusions of the iron core and a winding to which an alternating current is applied, wherein the iron core has an E-shape, An induction heating coil device, wherein a gap between the opposing sides formed at the tip of the lower side is adjustable. 【請求項２】上記鉄心は、上下に２分割されていること
を特徴とする請求項１記載の誘導加熱コイル装置。2. The induction heating coil device according to claim 1, wherein said iron core is divided into upper and lower parts. 【請求項３】上記鉄心は、Ｅ字の上、下辺の一方の辺と
Ｅ字の上記一方の辺を除く部位とに分割構成され、上記
一方の辺が、上記対向辺の間隙を変更できるように、上
記一方の辺の根元部を上記一方の辺を除く部位に回動可
能に連結されていることを特徴とする請求項１記載の誘
導加熱コイル装置。3. The iron core is divided into one of upper and lower sides of an E-shape and a part excluding the one side of the E-shape, and the one side can change a gap between the opposite sides. The induction heating coil device according to claim 1, wherein a root portion of the one side is rotatably connected to a portion excluding the one side.
JP2276550A 1990-10-17 1990-10-17 Induction heating coil device Expired - Fee Related JP2994018B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2276550A JP2994018B2 (en) 1990-10-17 1990-10-17 Induction heating coil device

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Application Number Priority Date Filing Date Title
JP2276550A JP2994018B2 (en) 1990-10-17 1990-10-17 Induction heating coil device

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JPH04154078A JPH04154078A (en) 1992-05-27
JP2994018B2 true JP2994018B2 (en) 1999-12-27

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JP2276550A Expired - Fee Related JP2994018B2 (en) 1990-10-17 1990-10-17 Induction heating coil device

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CN111001770A (en) * 2020-01-14 2020-04-14 包头联方高新技术有限责任公司 Plate blank corner heater and heating method in continuous casting process

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JPH04154078A (en) 1992-05-27

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