WO2015087373A1 - 誘導加熱装置 - Google Patents
誘導加熱装置 Download PDFInfo
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- WO2015087373A1 WO2015087373A1 PCT/JP2013/007355 JP2013007355W WO2015087373A1 WO 2015087373 A1 WO2015087373 A1 WO 2015087373A1 JP 2013007355 W JP2013007355 W JP 2013007355W WO 2015087373 A1 WO2015087373 A1 WO 2015087373A1
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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
- H05B6/365—Coil arrangements using supplementary conductive or ferromagnetic pieces
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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
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
- H05B6/103—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces multiple metal pieces successively being moved close to the inductor
- H05B6/104—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces multiple metal pieces successively being moved close to the inductor metal pieces being elongated like wires or bands
-
- 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
- H05B6/40—Establishing desired heat distribution, e.g. to heat particular parts of workpieces
Definitions
- the present invention relates to a C-type inductor type induction heating apparatus.
- An induction heating device is used to heat the rolled material and other heated materials in the hot rolling line.
- a pair of C-type inductors that heat both ends of the material to be heated whose temperature is lower than the center of the material to be heated are used.
- the C-type inductor type induction heating device has an inductor shape with a short heating width that heats only a narrow portion of the end of the material to be heated.
- This type of mobile C-type inductor is composed of a pair of C-type inductor moving carriages, a motor control device, a position detector, and a control device in order to adjust the heating position to the end positions of various plate widths. Yes.
- the moving C-type inductor induction heating device cannot be heated while the carriage is moving because the moving carriage of the C-type inductor moves each time the material width changes. Therefore, in the case of a continuous material, there is a concern that an unheated portion of the material to be heated is generated during movement of the carriage.
- lateral displacement of the material may occur during conveyance of the heated material.
- the heating wrap width of the C-type inductor varies depending on the amount of deviation of the heated material, a difference in heating power between the left and right inductors occurs. In some cases, abnormal heating with uneven temperature may occur at the left and right ends of the heated material.
- the present invention has been made to solve the above-described problems. Even if there is a change in the material width, an unheated portion is not generated, and even if a material shift occurs, the left and right material edges are
- the present invention provides a highly efficient and inexpensive induction heating apparatus that does not cause abnormal heating with nonuniform temperature in a section, reduces inductor replacement time, and reduces apparatus costs such as a moving mechanism and a control apparatus.
- an induction heating device in which fixed C-type inductors are arranged in pairs at both ends in the width direction of a material to be heated, the fixed C-type inductor comprising two inductor heads and 1
- the inductor head includes a main body core structure including a main body iron core and a nonmagnetic main body iron core plate that supports the main body iron core from a side surface, and transports a material to be heated.
- An open leg core having an iron core width that secures an iron core wrap width that is greater than or equal to the end heat width from a narrow material to a wide material along a direction, and a nonmagnetic open leg iron core plate that supports the open leg core And a heating coil that heats magnetic flux by interlinking with a material to be heated.
- the C-type core structure is a non-magnetic material that supports the C-type core and the C-type core from the side. It is composed of a metal C-type iron core plate.
- an unheated portion is not generated even if there is a change in the material width, and even if a material shift occurs, abnormal heating with nonuniform temperature at the left and right material ends does not occur, and the inductor It is possible to realize a highly efficient and inexpensive induction heating apparatus that reduces the replacement time and reduces the cost of the moving mechanism and the control device.
- FIG. 1 is a schematic diagram showing the overall configuration of an induction heating apparatus according to an embodiment of the present invention.
- the induction heating apparatus according to the present embodiment has two sets of fixed C-type inductors 12 that are installed on the left and right sides by taking an installation space of a pair of open leg iron core depth width WC3.
- the induction heating apparatus according to the embodiment of the present invention is roughly composed of a main body iron core structure 1, an open leg iron core structure 2, and a fixed C-type inductor 12.
- the main body core structure 1 is composed of a main body core 1A and a nonmagnetic main body core plate 1B that supports the main body core 1A from the side surface.
- the open leg iron core structure 2 includes an open leg iron core 2A that can be heated from the narrow material 7 to the wide material 8, and a nonmagnetic open leg iron core plate 2B that supports the open leg iron core 2A.
- the open leg iron core 2A and the open leg iron core plate 2B are stacked in a direction orthogonal to the heating coil 3, and the heating loss of the heating coil 3 and the open leg iron core 2A is reduced.
- the non-magnetic metal open leg iron core contact plate 2B is arranged outside the side surface of the open leg iron core 2A parallel to the heating coil 3, and supports the iron core while preventing the vicinity of the open leg iron core 2A from being heated.
- the open leg iron core 2 ⁇ / b> A has an open leg iron core depth width WC ⁇ b> 1 that secures an iron core wrap width equal to or greater than the end heating width WH ⁇ b> 1 from the narrow material 7 to the wide material 8.
- the fixed C-type inductor 12 is composed of two inductor heads 12A and one C-type iron core structure 4.
- the C-type inductors 12 in this embodiment are arranged in pairs at both ends in the width direction of the material to be heated, and the eddy current I flows by interlinking the magnetic flux ⁇ generated from the heating coil 3 with the material to be heated. Joule heat is generated by the resistance of the material to be heated to heat both ends of the material to be heated. And in this embodiment, it becomes possible to heat an edge part from the to-be-heated material with a narrow width
- the inductor head 12 ⁇ / b> A includes a main body iron core structure 1, an open leg iron core structure 2, and a heating coil 3.
- the C-type iron core structure 4 includes a C-type iron core 4A and a nonmagnetic C-type iron core abutting plate 4B that supports the C-type iron core 4A from the side surface.
- the C-type iron core pressing plate 4B holds the C-type iron core 4A and takes insulation.
- As the material of the C-type iron core abutting plate 4B for example, stainless steel or copper is suitable. Stainless steel is strong and has a shielding effect. Copper inductively heats itself.
- FIG. 2 is a diagram for explaining the dimensional relationship of each part of the open leg iron core.
- the end portion can be heated from a narrow material to a wide material without moving the inductor head 12A.
- the heating width of the end is determined by the user's specifications, and the temperature rising range is, for example, about 25 ° C. to 100 ° C.
- the open leg iron core depth width WC1 and the pair of open leg iron core space widths WC2 are determined from the following narrow material plate width W1, wide material plate width W2, and end heating width WH1.
- the C-type inductor 12 in the present embodiment includes an open leg iron core 2A and an open leg iron core plate 2B that are stacked in a direction orthogonal to the heating coil 3. Thereby, the heating loss of the heating coil 3 and the open leg iron core 2A can be reduced.
- the dimensions of the iron core are managed so that there is room for the maximum plate width and the minimum plate width of the material to be heated.
- the open leg iron core structure 2, the main body iron core structure 1, and the heating coil 3 that are frequently exchanged are combined into the structure of the inductor head 12A.
- the fixed C-type inductor 12 includes two frequently exchanged pieces. Since the inductor head 12A and one C-type iron core structure 4 are used and the structure in which the damaged portion is easily replaced is adopted, the inductor replacement time can be reduced.
- FIG. 3 is a schematic diagram showing the overall configuration of the induction heating apparatus according to the second embodiment.
- the fixed C-type inductor 12 in the second embodiment butt-matches an inductor head 12 ⁇ / b> A having an L-shaped core plate and a C-type core structure 4 having an L-shaped core plate.
- a separable main body core separation mechanism 5 having a character-shaped portion fixed by bolts 14 and nuts 15 is provided. It is preferable that the abutting position, that is, the separating position is a position where the magnetic flux flowing through the C-type inductor 12 is constant.
- the inductor head 12A can be easily replaced by removing the L-shaped bolt 14 from the fixed C-type inductor 12, so that the maintenance time can be reduced. And costs are greatly reduced.
- the inductor replacement part can be more easily replaced in a short time.
- FIG. 4 is a schematic diagram showing the overall configuration of the induction heating apparatus according to the third embodiment. As shown in FIG. 4, in the fixed C-type inductor 12 in the third embodiment, four heating coils 3 are connected to the AC induction heating power source 9 and are connected so that the directions of the flowing currents 10 are the same.
- the material wrap size varies from the narrow material wrap size WW1 to the wide material wrap size WW2, but the narrow material wrap size WW1 is designed to be larger than the end heating width WH1.
- the induced current 16 flowing through the material to be heated flows in the entire plate width direction, and particularly intensively flows at both ends of the material to be heated. One large current is formed.
- FIG. 5 is a diagram illustrating the heating temperature distribution in the conventional mobile C-type inductor and the fixed C-type inductor 12 according to the third embodiment for comparison.
- the temperature rise curve of the conventional mobile C-type inductor has a constant lap size with the material to be heated, so the central portion of the material to be heated is not heated, but only the end of the material to be heated is heated. To do.
- the heating width WH1 at the end is constant.
- the fixed C-type inductor 12 in the third embodiment changes from the narrow material plate width W1 to the wide material plate width W2, the induced current 9 has a sufficiently long open leg core depth width WC1. Therefore, the end heating width WH1 that heats the end of the material intensively with the narrow material wrap size WW1 and also heats the center of the material can be ensured.
- the direction of the magnetic flux 11 generated from the four heating coils 3 on the top, bottom, left, and right is the same direction, so that the induced current 16 is applied to the entire plate width direction of the material to be heated.
- a gradual temperature rise curve that secures the end heating width WH1 while heating the center portion of the material to be heated, in particular, intensively flowing at both ends of the material to be heated can be realized, and heating efficiency is improved.
- the heating lap width of the C-type inductor 12 does not change greatly, so that there is no significant difference in heating power between the left and right inductors, and an abnormality due to uneven end temperature of the left and right heated materials. The phenomenon of generating heating is reduced.
- the embodiment of the present invention even if there is a change in the material width, an unheated portion is not generated, and even if a material deviation occurs, abnormal temperature unevenness is generated at the left and right material end portions. Therefore, it is possible to realize a highly efficient and inexpensive induction heating device that reduces the inductor replacement time and reduces the cost of the moving mechanism and the control device.
- Main body iron core structure 1A ... Main body iron core 1B Iron core contact plate 2 ... Open leg iron core structure 2A ... Open leg iron core 2B ... Open leg iron core plate 3 ... Heating coil 4 ... C type iron core structure 4A ... C type iron core 4B ... C type iron core plate 5 ... Main body iron core separation mechanism 6 ..Bus bar 7 ... Wide plate material 8 ... Narrow plate material 9 ... AC induction heating power supply 10 ... Current 11 ... Magnetic flux W1 ... Narrow material plate width W2 ...
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- General Induction Heating (AREA)
Abstract
Description
図1は、本発明の実施形態に係る誘導加熱装置の全体構成を示す概略図である。本実施形態に係る誘導加熱装置は、1対の開脚鉄心奥行幅WC3の設置スペースを取って左右に設置した2組の固定式C型インダクタ12を有している。図1に示すように、本発明の実施形態に係る誘導加熱装置は、大別すると、本体鉄心構造物1、開脚鉄心構造物2、固定式C型インダクタ12から構成されている。
(2)幅狭材ラップ寸法WW1=(幅狭材板幅W1-1対の開脚鉄心奥行幅WC3)/2 >端部加熱幅WH1
(3)幅広材ラップ寸法WW2=(幅広材板幅W2-1対の開脚鉄心奥行幅WC3)/2 >端部加熱幅WH1
また、本実施形態におけるC型インダクタ12は、加熱コイル3と直交する方向に積層した開脚鉄心2Aと開脚鉄心当板2Bとより構成している。これにより、加熱コイル3と開脚鉄心2Aの加熱ロスを低減することができる。
次に、第2の実施形態について説明する。第2の実施形態は、固定式C型インダクタを分離可能な機構とするものである。
次に、第3の実施形態について説明する。第3の実施形態は、左右のインダクタの磁束の向きを同一にするように構成された2組の固定式インダクタを並列設置し、1つの交流誘導加熱電源に接続するものである。
1A・・・本体鉄心
1B・・・本体鉄心当板
2・・・開脚鉄心構造物
2A・・・開脚鉄心
2B・・・開脚鉄心当板
3・・・加熱コイル
4・・・C型鉄心構造物
4A・・・C型鉄心
4B・・・C型鉄心当板
5・・・本体鉄心分離機構
6・・・ブスバー
7・・・幅広板材
8・・・幅狭板材
9・・・交流誘導加熱電源
10・・・電流
11・・・磁束
W1・・・幅狭材板幅
W2・・・幅広材板幅
WW1・・・幅狭材ラップ寸法
WW2・・・幅広材ラップ寸法
WC1・・・開脚鉄心奥行幅
WC2・・・1対開脚鉄心空間幅
WC3・・・1対開脚鉄心奥行幅
WH1・・・端部加熱幅
12・・・固定型C型インダクタ
12A・・・インダクタヘッド
13・・・ 移動型C型インダクタ
14・・・ボルト
15・・・ナット
Claims (9)
- 固定式C型インダクタを被加熱材料の幅方向両端部に対に配置した誘導加熱装置であって、
前記固定式C型インダクタは、2個のインダクタヘッドと1組のC型鉄心構造物とから構成され、
前記インダクタヘッドは、本体鉄心と、この本体鉄心を側面から支持する非磁性の本体鉄心当板とから成る本体鉄心構造物と、
被加熱材の搬送方向に沿って、幅狭材料から幅広材料まで端部熱幅以上の鉄心ラップ幅を確保する鉄心幅を有する開脚鉄心と、この開脚鉄心を支持する非磁性の開脚鉄心当板とから成る開脚鉄心構造物と、
磁束を被加熱材料に鎖交させて加熱する加熱コイルとから構成され、
前記C型鉄心構造物は、C型鉄心とこのC型鉄心を側面から支持する非磁性金属のC型鉄心当板とから構成されることを特徴とする誘導加熱装置。 - 前記開脚鉄心の各部の寸法関係は、前記インダクタヘッドを移動せずに、幅の狭い材料から幅の広い材料まで、前記被加熱材料の端部を加熱可能に設定することを特徴とする請求項1記載の誘導加熱装置。
- 前記非磁性の本体鉄心当板の材質は、ステンレス又は銅であることを特徴とする請求項1又は請求項2記載の誘導加熱装置。
- 前記非磁性の開脚鉄心当板の材質は、ステンレス又は銅であることを特徴とする請求項1乃至請求項3のいずれか1項に記載の誘導加熱装置。
- 前記開脚鉄心と前記開脚鉄心当板は、前記加熱コイルと直交する方向に積層したものである特徴とする請求項1乃至請求項4のいずれか1項に記載の誘導加熱装置。
- 前記インダクタヘッドの本体鉄心当板は、L字形の本体鉄心当板であり、
前記C型鉄心構造物のC型鉄心当板は、L字形のC型鉄心当板であり、
前記あるインダクタヘッドと、前記C型鉄心構造物を突合せ、前記L字形部を固定した分離可能な本体鉄心分離機構を備えることを特徴とする請求項1記載の誘導加熱装置。 - 前記突合せて分離させる位置は、前記固定式C型インダクタ12に流れる磁束が一定となる位置であることを特徴とする請求項6記載の誘導加熱装置。
- 前記L字形部は、ボルトとナットにて固定することを特徴とする請求項6記載の誘導加熱装置。
- 前記一対の加熱コイルの巻き方向を同一にし、前記一対のインダクタの磁束の向きを同一にするように構成された2組の前記固定式C型インダクタを並列設置し、1つの交流誘導加熱電源に接続したことを特徴とする請求項1記載の誘導加熱装置。
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CN201380081131.0A CN105745993B (zh) | 2013-12-13 | 2013-12-13 | 感应加热装置 |
KR1020167016120A KR101864974B1 (ko) | 2013-12-13 | 2013-12-13 | 유도가열 장치 |
AU2013407780A AU2013407780B2 (en) | 2013-12-13 | 2013-12-13 | Induction heater |
JP2015552210A JP6077676B2 (ja) | 2013-12-13 | 2013-12-13 | 誘導加熱装置 |
PCT/JP2013/007355 WO2015087373A1 (ja) | 2013-12-13 | 2013-12-13 | 誘導加熱装置 |
TW102148131A TWI592060B (zh) | 2013-12-13 | 2013-12-25 | 感應加熱裝置 |
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IT201700020203A1 (it) * | 2017-02-22 | 2018-08-22 | Rotelec Sa | Apparato di riscaldamento per prodotti metallici |
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CN110116141A (zh) * | 2018-02-07 | 2019-08-13 | 宝山钢铁股份有限公司 | 一种自适应镁合金板带温轧过程温度分布的加热系统 |
JP7095651B2 (ja) * | 2019-05-14 | 2022-07-05 | 東芝三菱電機産業システム株式会社 | エッジヒータの制御システム |
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JP2011065818A (ja) * | 2009-09-16 | 2011-03-31 | Toshiba Mitsubishi-Electric Industrial System Corp | 誘導加熱装置及び誘導加熱装置の制御方法 |
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JP3156746B2 (ja) | 1994-06-21 | 2001-04-16 | 北芝電機株式会社 | 誘導加熱装置 |
JP4739792B2 (ja) | 2005-03-31 | 2011-08-03 | 東芝三菱電機産業システム株式会社 | 誘導加熱装置及び誘導加熱装置のアークスポット抑制方法 |
WO2008053525A1 (fr) * | 2006-10-31 | 2008-05-08 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Dispositif de chauffage par induction |
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- 2013-12-13 KR KR1020167016120A patent/KR101864974B1/ko active IP Right Grant
- 2013-12-13 JP JP2015552210A patent/JP6077676B2/ja active Active
- 2013-12-13 AU AU2013407780A patent/AU2013407780B2/en active Active
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH0639953U (ja) * | 1992-10-29 | 1994-05-27 | 北芝電機株式会社 | 誘導加熱装置 |
JPH0917561A (ja) * | 1995-07-03 | 1997-01-17 | Mitsubishi Heavy Ind Ltd | C型コイル |
JPH11195480A (ja) * | 1998-01-07 | 1999-07-21 | Mitsubishi Heavy Ind Ltd | ストリップエッジの誘導加熱装置及びその製造方法 |
JP2004006106A (ja) * | 2002-05-31 | 2004-01-08 | Jfe Steel Kk | シートバーのエッジ加熱方法及び装置 |
JP2011065818A (ja) * | 2009-09-16 | 2011-03-31 | Toshiba Mitsubishi-Electric Industrial System Corp | 誘導加熱装置及び誘導加熱装置の制御方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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IT201700020203A1 (it) * | 2017-02-22 | 2018-08-22 | Rotelec Sa | Apparato di riscaldamento per prodotti metallici |
WO2018153976A1 (en) * | 2017-02-22 | 2018-08-30 | Rotelec Sa | Heating apparatus for metal products |
CN110506449A (zh) * | 2017-02-22 | 2019-11-26 | 罗特勒克股份有限公司 | 用于金属产品的加热装置 |
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KR101864974B1 (ko) | 2018-06-05 |
TWI592060B (zh) | 2017-07-11 |
AU2013407780A1 (en) | 2016-06-30 |
CN105745993B (zh) | 2019-02-15 |
CN105745993A (zh) | 2016-07-06 |
TW201524270A (zh) | 2015-06-16 |
AU2013407780B2 (en) | 2017-02-16 |
KR20160089416A (ko) | 2016-07-27 |
JP6077676B2 (ja) | 2017-02-08 |
JPWO2015087373A1 (ja) | 2017-03-16 |
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