JP2003064414A - Induction heating coil device - Google Patents
Induction heating coil deviceInfo
- Publication number
- JP2003064414A JP2003064414A JP2001253719A JP2001253719A JP2003064414A JP 2003064414 A JP2003064414 A JP 2003064414A JP 2001253719 A JP2001253719 A JP 2001253719A JP 2001253719 A JP2001253719 A JP 2001253719A JP 2003064414 A JP2003064414 A JP 2003064414A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- coil portion
- induction heating
- work
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- General Induction Heating (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、全体形状が略柱状を呈
するワークを高周波で誘導加熱する際等に使用される高
周波誘導加熱用コイル装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high frequency induction heating coil device used for high frequency induction heating of a work having a substantially columnar shape.
【0002】[0002]
【従来の技術】従来、例えばモータコアの製造は、所定
形状の多数枚の珪素鋼板を、中間部と両端部にステンレ
ス板を介在させ、軸心に設けた孔に軸を貫通させつつ、
各珪素鋼板を例えば接着固定することにより一体化され
て積層鉄芯を形成することで行っている。そして、この
積層鉄芯の形成時の加熱方法として、高周波誘導加熱が
使用されており、そのコイル装置は、例えば外周面が絶
縁処理された銅パイプを同一方向に複数回巻回すること
によって形成されている。2. Description of the Related Art Conventionally, for example, in the manufacture of a motor core, a large number of silicon steel plates having a predetermined shape are used, with a stainless plate interposed between an intermediate portion and both ends, and a shaft provided through a shaft,
This is performed by forming a laminated iron core by integrating the silicon steel plates by, for example, adhesive fixing. High-frequency induction heating is used as a heating method for forming the laminated iron core, and the coil device is formed, for example, by winding a copper pipe whose outer peripheral surface is insulated in the same direction a plurality of times. Has been done.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、このコ
イル装置にあっては、銅パイプを同一方向に所定回数巻
回することによって形成されているため、積層鉄芯に誘
起される磁束の向きが該鉄芯の一端側から他端側に向け
て一定方向となり、両端部と中間部に例えば補強用に設
けられたステンレス板部分の加熱温度が他の部分より高
くなり易い。However, since this coil device is formed by winding the copper pipe in the same direction a predetermined number of times, the direction of the magnetic flux induced in the laminated iron core is The iron core has a fixed direction from one end side to the other end side, and the heating temperature of the stainless steel plate portions provided for reinforcing at both end portions and the intermediate portion is likely to be higher than other portions.
【0004】その結果、積層鉄芯の軸方向における各珪
素鋼板の加熱温度が不均一となって、珪素鋼板の固着強
度等にバラツキが発生し、該鉄芯に高精度な回転特性が
得られ難いという問題点を有している。この傾向は、積
層鉄芯の長さが長くなり中間に介在されるステンレス板
(補強板)が多くなるにつれ顕著になり易く、その改善
が望まれているのが実状である。As a result, the heating temperature of each silicon steel sheet in the axial direction of the laminated iron core becomes non-uniform, and the adhesion strength of the silicon steel sheet and the like vary, so that highly accurate rotation characteristics can be obtained for the iron core. It has a problem that it is difficult. This tendency tends to become more prominent as the length of the laminated iron core increases and the number of intermediate stainless steel plates (reinforcing plates) increases, and the actual situation is that improvement is desired.
【0005】本発明は、このような事情に鑑みてなされ
たもので、その目的は、巻き方向を効果的に設定するこ
とにより、略柱状ワークの軸方向に沿った加熱温度の均
一化を図って高品質のワークが容易に得られる高周波誘
導加熱用コイル装置を提供することにある。The present invention has been made in view of the above circumstances, and an object thereof is to make the heating temperature uniform along the axial direction of a substantially columnar work by effectively setting the winding direction. It is to provide a coil device for high-frequency induction heating that can easily obtain a high-quality work.
【0006】[0006]
【課題を解決するための手段】かかる目的を達成すべ
く、本発明のうち請求項1記載の発明は、全体形状が略
柱状を呈するワークを高周波の誘導加熱によって加熱す
る高周波誘導加熱用コイル装置であって、該コイル装置
は、導体を所定方向に向けて複数回巻回した第1コイル
部と、該第1コイル部の軸方向に沿った所定位置でその
巻き方向が前記所定方向と逆方向に巻回された第2コイ
ル部と、を備えることを特徴とする。そして、請求項2
記載の発明は、前記第2コイル部が、第1コイル部より
巻数が少なく設定され第1コイル部の内側に位置するこ
とを特徴とする。In order to achieve the above object, the invention according to claim 1 of the present invention is a coil device for high frequency induction heating for heating a work having a substantially columnar shape as a whole by high frequency induction heating. The coil device includes a first coil portion in which a conductor is wound a plurality of times in a predetermined direction, and a winding direction opposite to the predetermined direction at a predetermined position along the axial direction of the first coil portion. And a second coil portion wound in the direction. And claim 2
The invention described is characterized in that the second coil portion is set to have a smaller number of turns than the first coil portion and is located inside the first coil portion.
【0007】[0007]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて詳細に説明する。図1〜図4は、本発明に係
わる高周波誘導加熱用コイル装置の一実施例を示してい
る。図において、コイル装置1は、外周面が絶縁処理さ
れた銅パイプを巻回することにより形成されたコイル部
2と、このコイル部2を例えば図示しないトランジスタ
インバータの出力端子に着脱可能に固定保持する固定部
3とを有している。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 to 4 show an embodiment of a coil device for high frequency induction heating according to the present invention. In the figure, a coil device 1 includes a coil portion 2 formed by winding a copper pipe whose outer peripheral surface is insulated, and the coil portion 2 that is detachably fixed to an output terminal of a transistor inverter (not shown). And a fixing portion 3 for
【0008】前記コイル部2は、所定方向(例えば右巻
き方向)に所定回数n1(例えばn1=34回)巻回さ
れた円形の第1コイル部4と、この第1コイル部4に直
列的に巻回され第1コイル部4の軸方向の略中間位置に
該コイル部4とは逆方向(例えば左巻き方向)に所定回
数n2(例えばn2=1回)巻回された円形の第2コイ
ル部5とで構成されている。なお、第2コイル部5の巻
数n2は、第1コイル部4の巻数n1の例えば10分の
1以下に設定され、第2コイル部5は第1コイル部4の
内側に嵌挿配置されている。The coil portion 2 has a circular first coil portion 4 wound a predetermined number of times n1 (for example, n1 = 34 times) in a predetermined direction (for example, a clockwise direction), and is serially connected to the first coil portion 4. A second circular coil wound around the first coil portion 4 at a substantially intermediate position in the axial direction and wound a predetermined number of times n2 (for example, n2 = 1 time) in the direction opposite to the coil portion 4 (for example, the left winding direction). It is composed of a part 5 and the like. The number of turns n2 of the second coil portion 5 is set to, for example, 1/10 or less of the number of turns n1 of the first coil portion 4, and the second coil portion 5 is inserted and arranged inside the first coil portion 4. There is.
【0009】そして、このコイル部2の両端部、すなわ
ち第1コイル部4の一端側と第2コイル部5の他端側
は、絶縁板9を介して圧接された一対の銅板6表面の角
パイプ7にそれぞれ接続され、この各角パイプ7の先端
にはホースコネクター8がそれぞれ固定されている。ま
た、銅板6は、平面視コ字状に形成されて先端側の折曲
面6aと平面部6bに前記角パイプ7が固定され、後端
側の折曲面6cが前記トランジスタインバータへの固定
面を形成している。なお、角パイプ7に固定されたホー
スコネクター8には、トランジスタインバータに例えば
一体化された冷却装置が接続され、冷却水が角パイプ7
とコイル部2に循環供給されるように構成されている。Both ends of the coil portion 2, that is, one end side of the first coil portion 4 and the other end side of the second coil portion 5 are corners of the surface of the pair of copper plates 6 pressed against each other via the insulating plate 9. Each of the square pipes 7 is connected to a pipe 7, and a hose connector 8 is fixed to the tip of each square pipe 7. Further, the copper plate 6 is formed in a U shape in a plan view, and the square pipe 7 is fixed to the bent curved surface 6a on the front end side and the flat surface portion 6b, and the bent curved surface 6c on the rear end side serves as a fixing surface to the transistor inverter. Is forming. The hose connector 8 fixed to the square pipe 7 is connected to a cooling device that is integrated with the transistor inverter, for example, and the cooling water is supplied to the square pipe 7.
And is circulated and supplied to the coil unit 2.
【0010】このコイル装置1よれば、銅板6の折曲面
6cをトランジスタインバータの出力端子にボルト等で
それぞれ固定し、冷却装置とホースコネクター8とを可
撓性のホースで接続する。そして、コイル部2の円形内
にワークとしての積層鉄芯を図示しない支持装置で嵌挿
支持させ、トランジスタインバータを作動させると、高
周波電流が銅板6、銅パイプ7を介してコイル部2の第
1コイル部4と第2コイル部5に供給される。また、こ
の高周波電流の供給と略同時にホースを介してコイル部
2の銅パイプ内に冷却水が循環供給され、コイル部2の
発熱が抑えられる。According to this coil device 1, the bent curved surfaces 6c of the copper plate 6 are fixed to the output terminals of the transistor inverter by bolts or the like, and the cooling device and the hose connector 8 are connected by a flexible hose. Then, when a laminated iron core as a work is inserted and supported by a supporting device (not shown) in the circle of the coil portion 2 and the transistor inverter is operated, a high frequency current is passed through the copper plate 6 and the copper pipe 7 to cause the high frequency current of the coil portion 2 It is supplied to the first coil portion 4 and the second coil portion 5. Further, cooling water is circulated and supplied into the copper pipe of the coil portion 2 through the hose at substantially the same time as the supply of the high-frequency current, and heat generation of the coil portion 2 is suppressed.
【0011】コイル部2に高周波電流が供給されると、
第1コイル部4と第2コイル部5からそれぞれ所定方向
の磁束が発生し、この磁束は、第1コイル部4と第2コ
イル部5の巻き方向が逆向きに設定されていることか
ら、その軸方向の略中間部分において、互いに逆方向の
磁束が交差し、該部分に発生する第1コイル部4による
磁束が第2コイル部5の磁束で一部打ち消される状態と
なる。When a high frequency current is supplied to the coil section 2,
Magnetic fluxes in predetermined directions are respectively generated from the first coil portion 4 and the second coil portion 5, and the magnetic fluxes are set so that the winding directions of the first coil portion 4 and the second coil portion 5 are opposite to each other. Magnetic fluxes in opposite directions intersect each other at a substantially intermediate portion in the axial direction, and the magnetic flux generated by the first coil portion 4 in the portion is partially canceled by the magnetic flux of the second coil portion 5.
【0012】これにより、ワークの長手方向の略中間位
置に配置された補強板部分に誘起される渦電流が他の部
分に対して少なくなり、ワークの長手方向全域における
誘導加熱状態、すなわち加熱温度が均一化される。この
加熱温度の均一化で、積層鉄芯の多数枚の珪素鋼板が均
一に接着固定され、この積層鉄芯を例えばモータの回転
子として使用することにより、安定した回転が得られる
ことになる。なお、実験によれば、コイル装置1の使用
で、積層鉄芯の長手方向における温度差を数度(例えば
3℃)以内に設定できることが確認されている。As a result, the eddy currents induced in the reinforcing plate portion arranged at the substantially intermediate position in the longitudinal direction of the work are smaller than those in the other portions, and the induction heating state in the entire longitudinal direction of the work, that is, the heating temperature. Are made uniform. By uniformizing the heating temperature, a large number of silicon steel plates having a laminated iron core are uniformly adhered and fixed. By using the laminated iron core as a rotor of a motor, for example, stable rotation can be obtained. According to the experiment, it is confirmed that the temperature difference in the longitudinal direction of the laminated iron core can be set within several degrees (for example, 3 ° C.) by using the coil device 1.
【0013】つまり、積層鉄芯の補強や極の分割のため
に設けられるステンレス板部分における磁束を一部打ち
消して該部分に誘起される渦電流を小さくすることで、
他の部分との渦電流の平均化を図り、積層鉄芯の長手方
向全域の加熱温度を均一化して、各積層鉄芯間の固着状
態等を安定させることができる。また、巻数の少ない第
2コイル部5が第1コイル部4の内側に位置すること
で、第2コイル部5を第1コイル部4で保護できて、コ
イル装置1の形状の安定化と使い勝手の向上が図れる。That is, by partially canceling the magnetic flux in the stainless plate portion provided for reinforcing the laminated iron core and dividing the poles, the eddy current induced in the portion is reduced,
By averaging the eddy currents with other portions, the heating temperature of the entire area of the laminated iron core in the longitudinal direction can be made uniform, and the fixing state between the laminated iron cores can be stabilized. Further, since the second coil portion 5 having a small number of turns is located inside the first coil portion 4, the second coil portion 5 can be protected by the first coil portion 4, and the shape and stability of the coil device 1 can be improved. Can be improved.
【0014】なお、以上の説明においては、コイル部2
を円形に形成したが、ワークの形状によっては方形状に
形成することもできるし、コイル部2の形態として馬蹄
形状に形成することもできる。また、上記実施例の第1
コイル部4と第2コイル部5の巻数n1、n2も一例で
あって適宜に増減することができるし、本発明はワーク
として積層鉄芯に限らず、他の適宜の略柱状を呈するワ
ークに適用することができる。In the above description, the coil portion 2
Although it is formed in a circular shape, it may be formed in a rectangular shape depending on the shape of the work, or may be formed in a horseshoe shape as the shape of the coil portion 2. The first embodiment of the above embodiment
The number of turns n1 and n2 of the coil portion 4 and the second coil portion 5 is also an example, and can be appropriately increased or decreased. The present invention is not limited to the laminated iron core as the work, and can be applied to other work having a substantially columnar shape. Can be applied.
【0015】[0015]
【発明の効果】以上詳述したように、請求項1記載の発
明によれば、所定方向に巻回された第1コイル部と、こ
の第1コイル部の巻き方向が逆の第2コイル部とを備え
るため、第2コイル部で第1コイル部の磁束を弱めるこ
とができ、例えばワークの中間部に設けられた補強板部
分の加熱温度を下げて、ワークの軸方全域における温度
を均一化して、高品質のワークを得ることができる。As described above in detail, according to the first aspect of the invention, the first coil portion wound in the predetermined direction and the second coil portion in which the winding direction of the first coil portion are opposite to each other. Since the second coil portion can weaken the magnetic flux of the first coil portion, for example, the heating temperature of the reinforcing plate portion provided in the middle portion of the work can be lowered to make the temperature uniform throughout the axial direction of the work. It is possible to obtain a high quality work.
【0016】また、請求項2記載の発明は、請求項1記
載の発明の効果に加え、巻数が少ない第2コイルが第1
コイル部の内側に位置するため、第2コイル部を第1コ
イル部で保護できて、コイル装置の耐久性向上が図れる
と共に、使い勝手の向上を図ることができる。In addition to the effect of the invention according to claim 1, the invention according to claim 2 is characterized in that the second coil having a small number of turns is the first coil.
Since it is located inside the coil portion, the second coil portion can be protected by the first coil portion, the durability of the coil device can be improved, and the usability can be improved.
【図1】本発明に係わる高周波誘導加熱用コイル装置の
一実施例を示す側面図FIG. 1 is a side view showing an embodiment of a coil device for high frequency induction heating according to the present invention.
【図2】同その平面図FIG. 2 is a plan view of the same.
【図3】同図2の右側面図FIG. 3 is a right side view of FIG.
【図4】同図1のA−A線断面図FIG. 4 is a sectional view taken along line AA of FIG.
1 コイル装置 2 コイル部 3 固定部 4 第1コイル部 5 第2コイル部 6 銅板 7 角パイプ 1 coil device 2 coil part 3 Fixed part 4 First coil part 5 Second coil section 6 Copper plate 7 square pipe
Claims (2)
の誘導加熱によって加熱する高周波誘導加熱用コイル装
置であって、 該コイル装置は、導体を所定方向に向けて複数回巻回し
た第1コイル部と、該第1コイル部の軸方向に沿った所
定位置でその巻き方向が前記所定方向と逆方向に巻回さ
れた第2コイル部と、を備えることを特徴とする高周波
誘導加熱用コイル装置。1. A high-frequency induction heating coil device for heating a work having a generally columnar shape by high-frequency induction heating, the coil device comprising a conductor wound a plurality of times in a predetermined direction. For high frequency induction heating, comprising: a coil part; and a second coil part wound at a predetermined position along the axial direction of the first coil part in a winding direction opposite to the predetermined direction. Coil device.
数が少なく設定され第1コイル部の内側に位置すること
を特徴とする請求項1記載の高周波誘導加熱用コイル装
置。2. The coil device for high frequency induction heating according to claim 1, wherein the second coil portion is set to have a smaller number of turns than the first coil portion and is located inside the first coil portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001253719A JP4651238B2 (en) | 2001-08-24 | 2001-08-24 | High frequency induction heating coil device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001253719A JP4651238B2 (en) | 2001-08-24 | 2001-08-24 | High frequency induction heating coil device |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2003064414A true JP2003064414A (en) | 2003-03-05 |
JP4651238B2 JP4651238B2 (en) | 2011-03-16 |
Family
ID=19082001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001253719A Expired - Lifetime JP4651238B2 (en) | 2001-08-24 | 2001-08-24 | High frequency induction heating coil device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4651238B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012055963A (en) * | 2010-09-13 | 2012-03-22 | Honda Motor Co Ltd | Hot processing device of metal tube |
CN107852783A (en) * | 2015-07-31 | 2018-03-27 | 通快许廷格两合公司 | Inductor and inductor arrangement |
KR20200076481A (en) * | 2018-12-19 | 2020-06-29 | 주식회사 포스코 | Apparatus for eliminating residual stress of core |
EP3793072A4 (en) * | 2018-08-06 | 2021-09-01 | Baoshan Iron & Steel Co., Ltd. | Induction heating system and method for silicon steel core with self-adhesive coating |
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---|---|---|---|---|
JP2000087135A (en) * | 1998-09-09 | 2000-03-28 | High Frequency Heattreat Co Ltd | Induction heating and hardening apparatus for shaft member with foot |
JP2001081513A (en) * | 1999-09-17 | 2001-03-27 | Fuji Electronics Industry Co Ltd | High frequency induction heating coil for shaft with steps |
-
2001
- 2001-08-24 JP JP2001253719A patent/JP4651238B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000087135A (en) * | 1998-09-09 | 2000-03-28 | High Frequency Heattreat Co Ltd | Induction heating and hardening apparatus for shaft member with foot |
JP2001081513A (en) * | 1999-09-17 | 2001-03-27 | Fuji Electronics Industry Co Ltd | High frequency induction heating coil for shaft with steps |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012055963A (en) * | 2010-09-13 | 2012-03-22 | Honda Motor Co Ltd | Hot processing device of metal tube |
CN107852783A (en) * | 2015-07-31 | 2018-03-27 | 通快许廷格两合公司 | Inductor and inductor arrangement |
JP2018527703A (en) * | 2015-07-31 | 2018-09-20 | トゥルンプフ ヒュッティンガー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトTRUMPF Huettinger GmbH + Co. KG | Inductors and inductor assemblies |
EP3793072A4 (en) * | 2018-08-06 | 2021-09-01 | Baoshan Iron & Steel Co., Ltd. | Induction heating system and method for silicon steel core with self-adhesive coating |
JP2021528827A (en) * | 2018-08-06 | 2021-10-21 | バオシャン アイアン アンド スティール カンパニー リミテッド | Induction heating systems and methods for silicon cores with self-adhesive coatings |
JP7210617B2 (en) | 2018-08-06 | 2023-01-23 | バオシャン アイアン アンド スティール カンパニー リミテッド | Induction heating system and method for silicon steel cores with self-adhesive coatings |
US11968766B2 (en) | 2018-08-06 | 2024-04-23 | Baoshan Iron & Steel Co. Ltd. | Induction heating system and method for silicon steel core with self-adhesive coating |
KR20200076481A (en) * | 2018-12-19 | 2020-06-29 | 주식회사 포스코 | Apparatus for eliminating residual stress of core |
KR102181732B1 (en) * | 2018-12-19 | 2020-11-24 | 주식회사 포스코 | Apparatus for eliminating residual stress of core |
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