JP2015118882A - Induction heating coil - Google Patents

Induction heating coil Download PDF

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JP2015118882A
JP2015118882A JP2013263125A JP2013263125A JP2015118882A JP 2015118882 A JP2015118882 A JP 2015118882A JP 2013263125 A JP2013263125 A JP 2013263125A JP 2013263125 A JP2013263125 A JP 2013263125A JP 2015118882 A JP2015118882 A JP 2015118882A
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induction heating
heating coil
arc portion
workpiece
midpoint
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JP6295481B2 (en
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清澤　裕
Yutaka Kiyozawa
裕 清澤
光輝 西岡
Koki Nishioka
光輝 西岡
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Neturen Co Ltd
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    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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Abstract

PROBLEM TO BE SOLVED: To provide an induction heating coil which uniformly heats a cylindrical work-piece having a slit.SOLUTION: An induction heating coil 1 comprises: a first arc part 20 which extends on one end in an axial direction of a cylindrical work from a periphery of the work-piece in a circumferential direction; a second arc part 23 which extends on the other end in the axial direction from the periphery of the work-piece in the circumferential direction; a first inclined part 30 which connects one end 21 of the first arc part and on end 24 of the second arc part, which is opposite to the one end 21; and a second inclined part 31 which extends from the other end of the first arc part toward the second arc part.

Description

本発明は、円筒状に形成され且つ円周方向の一箇所で軸方向に沿って平行に延びるスリットを有するワークを誘導加熱するための誘導加熱コイルに関する。   The present invention relates to an induction heating coil for induction heating a workpiece which is formed in a cylindrical shape and has a slit extending in parallel along an axial direction at one place in a circumferential direction.

従来、円筒状部材を高周波により誘導加熱する場合、円筒状部材の外側に高周波加熱コイルを配置し、高周波電流を流している（特許文献１）。円筒状に形成され且つ円周方向の一箇所で軸方向に沿って平行に延びるスリットを有するワークに誘導加熱処理を行なう場合、一般的には、例えば図５及び図６に示すように、円筒状の加熱コイルが用いられている。   Conventionally, when a cylindrical member is induction-heated by high frequency, a high-frequency heating coil is disposed outside the cylindrical member and a high-frequency current is passed (Patent Document 1). When the induction heating process is performed on a workpiece that is formed in a cylindrical shape and has a slit extending in parallel along the axial direction at one place in the circumferential direction, generally, for example, as shown in FIGS. A shaped heating coil is used.

図５及び図６において、軸方向に延びるスリット１１を有する円筒状のワーク１０に対して、ワーク１０の全周に亘って、その外周面に対向させて、円筒状の誘導加熱コイル５１を配置し、誘導加熱コイル５１に電力供給装置５０から高周波電力を供給することにより、ワーク１０が誘導加熱される。   5 and 6, a cylindrical induction heating coil 51 is disposed over the entire circumference of the workpiece 10 so as to face the outer circumferential surface of the cylindrical workpiece 10 having the slit 11 extending in the axial direction. Then, by supplying high frequency power from the power supply device 50 to the induction heating coil 51, the workpiece 10 is induction heated.

特開平６−３０６４７６号公報JP-A-6-306476

このような誘導加熱コイル５１を使用したワーク１０の誘導加熱においては、円筒状の誘導加熱コイルによって磁束が生じ、ワーク１０に渦電流が矢印Ａで示す円周方向に流れる。しかし、ワーク１０がスリット１１を備えているため、スリット１１に近づくと、この渦電流は軸方向両側に分かれて、ワーク１０の軸方向両端付近を逆方向に流れる。そのため、ワーク１０の全体が均一に加熱されなくなり、均質な品質を保てずワークの硬度にバラツキが生じてしまう。   In the induction heating of the workpiece 10 using such an induction heating coil 51, a magnetic flux is generated by the cylindrical induction heating coil, and an eddy current flows in the workpiece 10 in the circumferential direction indicated by an arrow A. However, since the workpiece 10 includes the slit 11, when approaching the slit 11, the eddy current is divided on both sides in the axial direction, and flows in the opposite directions near both ends of the workpiece 10 in the axial direction. For this reason, the entire workpiece 10 is not heated uniformly, so that uniform quality cannot be maintained and the hardness of the workpiece varies.

本発明は以上の点に鑑み、簡単な構成により、円筒状に形成され且つ円周方向の一箇所で軸方向に平行に延びるスリットを有するワークを、均一に加熱する誘導加熱コイルを提供することを目的とする。   In view of the above, the present invention provides an induction heating coil that uniformly heats a workpiece having a slit formed in a cylindrical shape and extending parallel to the axial direction at one place in the circumferential direction with a simple configuration. With the goal.

本発明の誘導加熱コイルは、円筒状に形成され且つ円周方向の一箇所で軸方向に沿って延びるスリットを有するワークを誘導加熱するための誘導加熱コイルであって、
前記軸方向の一端部において前記ワークの周面から離間して円周方向に延びる第一の円弧部と、
前記軸方向の他端部において前記ワークの周面から離間して円周方向に延びる第二の円弧部と、前記第一の円弧部と第二の円弧部のそれぞれ同じ側にある一端部同士を接続し、前記ワークの周面に沿って湾曲して配置される第一の傾斜部と、
前記第一の円弧部の他端部から前記第二の円弧部に向けて延びて、前記ワークの周面に沿って湾曲して配置される第二の傾斜部と、から構成され、
前記第一の傾斜部及び第二の傾斜部は、前記第一の円弧部又は第二の円弧部から離れるにしたがい、互いに接近している。 The induction heating coil of the present invention is an induction heating coil for induction heating a workpiece having a slit formed in a cylindrical shape and extending along the axial direction at one place in the circumferential direction,
A first arc portion extending in the circumferential direction away from the peripheral surface of the workpiece at one end portion in the axial direction;
A second arc portion extending in the circumferential direction away from the peripheral surface of the workpiece at the other end portion in the axial direction, and one end portions on the same side of each of the first arc portion and the second arc portion A first inclined portion that is curved and disposed along the peripheral surface of the workpiece,
Extending from the other end portion of the first arc portion toward the second arc portion, and a second inclined portion arranged to be curved along the peripheral surface of the workpiece,
The first inclined portion and the second inclined portion are close to each other as they are separated from the first arc portion or the second arc portion.

上記構成により、本発明の誘導加熱コイルは、円筒状に形成され且つ円周方向の一箇所で軸方向に平行に延びるスリットを有するワークを均一に加熱することができる。   With the above-described configuration, the induction heating coil of the present invention can uniformly heat a workpiece that is formed in a cylindrical shape and has a slit extending in parallel to the axial direction at one place in the circumferential direction.

本発明の誘導加熱コイルに係る第一実施形態を示す概略斜視図である。It is a schematic perspective view which shows 1st embodiment which concerns on the induction heating coil of this invention. 第一実施形態に示す誘導加熱コイルとワークの拡大展開図である。It is an expansion development view of the induction heating coil and work shown in a first embodiment. 本発明の誘導加熱コイルに係る第二実施形態を示す概略斜視図である。It is a schematic perspective view which shows 2nd embodiment which concerns on the induction heating coil of this invention. 第二実施形態に示す誘導加熱コイルとワークの拡大展開図である。It is an expansion development view of the induction heating coil and work shown in the second embodiment. 従来の誘導加熱コイルの概略斜視図である。It is a schematic perspective view of the conventional induction heating coil. 従来の誘導加熱コイルの概略縦断面図である。It is a schematic longitudinal cross-sectional view of the conventional induction heating coil.

以下、本発明の実施の形態を図１〜図４を参照して詳細に説明する。
本発明の誘導加熱コイルに係る第一実施形態を図１及び図２に示す。
［ワーク］
本発明の誘導加熱コイルの加熱対象であるワーク１０は、図１に示すように、円筒状に形成され、周囲方向の一箇所で軸方向Ｏに平行に延びるスリット１１を有している。なお、ワーク１０は、上下の治具（図示せず）により保持され、回転機構（図示せず）によりワーク１０は、治具に保持された状態で回転されて誘導加熱される。 Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.
1st Embodiment which concerns on the induction heating coil of this invention is shown in FIG.1 and FIG.2.
[work]
As shown in FIG. 1, a workpiece 10 to be heated by the induction heating coil of the present invention is formed in a cylindrical shape and has a slit 11 that extends parallel to the axial direction O at one place in the circumferential direction. The workpiece 10 is held by upper and lower jigs (not shown), and the workpiece 10 is rotated by induction while being held by the jigs (not shown).

［誘導加熱コイル］
図１に第一実施形態の誘導加熱コイルを示す。
この誘導加熱コイル１は、ワーク１０の軸方向Ｏの一端部（図１においては、上端部）において、ワーク１０の周面から離間して円周方向に延びる第一の円弧部２０と、軸方向Ｏの他端部においてワーク１０の周面から離間して円周方向に延びる第二の円弧部２３と、第一の円弧部２０と第二の円弧部２３のそれぞれ同じ側にある一端部同士２１、２４とを接続し、ワーク１０の周面に沿って湾曲して配置される第一の傾斜部３０と、第一の円弧部２０の他端部２２から第二の円弧部２３に向けて延びて、ワーク１０の周面に沿って湾曲して配置される第二の傾斜部３１と、から構成されている。 [Induction heating coil]
FIG. 1 shows an induction heating coil according to the first embodiment.
The induction heating coil 1 includes a first arc portion 20 that extends in the circumferential direction and is spaced apart from the peripheral surface of the workpiece 10 at one end portion (the upper end portion in FIG. 1) of the workpiece 10 in the axial direction O. A second arc portion 23 that extends in the circumferential direction away from the peripheral surface of the workpiece 10 at the other end portion in the direction O, and one end portion on the same side of each of the first arc portion 20 and the second arc portion 23 The first inclined portion 30 connected to each other 21 and 24 and curved along the peripheral surface of the workpiece 10, and the second arc portion 23 from the other end portion 22 of the first arc portion 20. And a second inclined portion 31 that extends and is curved along the peripheral surface of the workpiece 10.

第一の円弧部２０と第二の円弧部２３とは、お互いに対向しており、ワーク１０から離間して配置されている。第一の円弧部２０及び第二の円弧部２３は、ワーク１０の円周の全長にわたっていてもよく、円周の一部分の長さを有して設けてもよい。   The first arc portion 20 and the second arc portion 23 are opposed to each other and are spaced apart from the workpiece 10. The first arc portion 20 and the second arc portion 23 may extend over the entire length of the circumference of the workpiece 10 or may be provided with a length of a portion of the circumference.

第一の円弧部２０の一端部２１と、一端部２１に対向する第二の円弧部２３の一端部２４とには、第一の傾斜部３０が接続している。また、第一の円弧部２０の他端部２２には、第二の円弧部２３に向けて延びる第二の傾斜部３１が接続している。なお、第二の傾斜部３１は、第二の円弧部２３とは接続していない。
さらに、第一の傾斜部３０及び第二の傾斜部３１は、第一の円弧部２０又は第二の円弧部２３から離れるにしたがい、それぞれが互いに接近するように延びており、かつワーク１０の周面に沿って湾曲して形成されている。 A first inclined portion 30 is connected to one end portion 21 of the first arc portion 20 and one end portion 24 of the second arc portion 23 facing the one end portion 21. In addition, a second inclined portion 31 extending toward the second arc portion 23 is connected to the other end portion 22 of the first arc portion 20. Note that the second inclined portion 31 is not connected to the second arc portion 23.
Further, as the first inclined portion 30 and the second inclined portion 31 are separated from the first arc portion 20 or the second arc portion 23, each extends so as to approach each other, and It is curved along the peripheral surface.

詳しくは、第一の傾斜部３０は、第一の円弧部２０の一端部２１及び第二の円弧部２３の一端部２４から第一の円弧部２０の中点と第二の円弧部２３の中点とを結ぶ直線の中点Ｃ（以降、中点Ｃという）に向けて延び、中点Ｃを頂点として山形を形成している。第二の傾斜部３１は、第一の円弧部２０の他端部２２及び第二の円弧部２３の他端部２５側から中点Ｃに向けて延び、中点Ｃを頂点として山形を形成している。   Specifically, the first inclined portion 30 is formed from the one end portion 21 of the first arc portion 20 and the one end portion 24 of the second arc portion 23 to the midpoint of the first arc portion 20 and the second arc portion 23. A straight line connecting the midpoints extends toward a midpoint C (hereinafter referred to as midpoint C), and a mountain shape is formed with the midpoint C as a vertex. The second inclined portion 31 extends from the other end portion 22 of the first arc portion 20 and the other end portion 25 side of the second arc portion 23 toward the midpoint C, and forms a mountain shape with the midpoint C as the apex. doing.

すなわち、第一の傾斜部３０及び第二の傾斜部３１は、第一の円弧部２０から中点Ｃに向けて、互いに接近するように延び、かつワーク１０の周面に沿って湾曲している。中点Ｃから第二の円弧部２３に向けて、第一の傾斜部３０及び第二の傾斜部３１は、互いに離れる方向に延び、かつワーク１０の周面に沿って湾曲して形成されている。   That is, the first inclined portion 30 and the second inclined portion 31 extend from the first arc portion 20 toward the middle point C so as to approach each other and are curved along the peripheral surface of the workpiece 10. Yes. The first inclined portion 30 and the second inclined portion 31 extend from the middle point C toward the second arc portion 23 in a direction away from each other and are curved along the peripheral surface of the workpiece 10. Yes.

したがって、第一の円弧部２０、第二の円弧部２３、第一の傾斜部３０及び第二の傾斜部３１から形成されるコイルの形状は、第一の円弧部２０の中点と第二の円弧部２３の中点とを結ぶ直線に関して左右対称になっている。また、第一の円弧部２０の中点と第二の円弧部２３の中点とを結ぶ直線と直交する中点を通る直線に関して、コイルの形状は上下対称の関係になっている。   Therefore, the shape of the coil formed from the first arc portion 20, the second arc portion 23, the first inclined portion 30, and the second inclined portion 31 is the middle point of the first arc portion 20 and the second shape. It is symmetrical with respect to a straight line connecting the midpoint of the arc portion 23 of the arc. In addition, regarding the straight line passing through the midpoint orthogonal to the straight line connecting the midpoint of the first arc portion 20 and the midpoint of the second arc portion 23, the coil shape is vertically symmetrical.

第二の円弧部２３の他端部２５及び第二の傾斜部３１の末端部３２には、それぞれ接続導体４０が接続されて電力供給装置５０と接続している。   A connection conductor 40 is connected to the other end portion 25 of the second arc portion 23 and the end portion 32 of the second inclined portion 31 to connect to the power supply device 50.

第一の円弧部２０、第二の円弧部２３、第一の傾斜部３０及び第二の傾斜部３１から形成されるコイルの形状は、中空導体部材をろう付け等で接続して形成されている。第一の円弧部の一端部２１及び／又は他端部２２において、第一の円弧部２０とワーク１０の周面に沿って湾曲する第一の傾斜部３０とを交差して接続するために、第一の傾斜部３０には、ひねりが加えられていてもよい。同様に、第二の傾斜部３１にもひねりが加えられていてもよい。
第一の円弧部２０、第二の円弧部２３、第一の傾斜部３０及び第二の傾斜部３１を中空導体部材とすることにより、冷却液を外部から誘導加熱コイル１に注入し、誘導加熱コイル１を冷却し、冷却した後の冷却液を外部に排出することができる。第二の円弧部２３の他端部２５、第二の傾斜部３１の末端部３２を、冷却液の注入口、排出口として用いる。 The shape of the coil formed from the first arc portion 20, the second arc portion 23, the first inclined portion 30, and the second inclined portion 31 is formed by connecting hollow conductor members by brazing or the like. Yes. In order to cross and connect the first arc portion 20 and the first inclined portion 30 curved along the peripheral surface of the workpiece 10 at the one end portion 21 and / or the other end portion 22 of the first arc portion. Further, a twist may be added to the first inclined portion 30. Similarly, a twist may be added to the second inclined portion 31.
By using the first arc portion 20, the second arc portion 23, the first inclined portion 30 and the second inclined portion 31 as hollow conductor members, the coolant is injected into the induction heating coil 1 from the outside, and induction is performed. The heating coil 1 is cooled, and the cooled coolant can be discharged to the outside. The other end portion 25 of the second arc portion 23 and the end portion 32 of the second inclined portion 31 are used as a coolant inlet and outlet.

電力供給装置５０から誘導加熱コイル１に対して高周波電力が供給され、ワーク１０が誘導加熱される。このとき、誘導加熱コイル１により磁束が生ずるが、中点Ｃ付近では、磁束が互いに打ち消しあうため、軸方向中央付近で磁束密度が高くなりにくく、ワーク１０の軸方向において誘導加熱が均等に行われることになる。   High frequency power is supplied from the power supply device 50 to the induction heating coil 1, and the work 10 is induction heated. At this time, a magnetic flux is generated by the induction heating coil 1, but the magnetic fluxes cancel each other near the midpoint C, so that the magnetic flux density is hardly increased near the center in the axial direction, and induction heating is performed uniformly in the axial direction of the workpiece 10. It will be.

本発明の誘導加熱コイルに係る第二実施形態を図３及び図４に示す。
本実施形態の誘導加熱コイルは、第一実施形態の第二の傾斜部３１を離間して隣接し、ワーク１０の周方向に配置したものであり、隣接する２つのコイルの形状物は、第二の傾斜部３１の末端部３２でお互いに接続している。
２つの第二の円弧部２３の他端部２５には、それぞれ接続導体４０が接続し、接続導体４０は、電力供給装置５０と接続している。 3 and 4 show a second embodiment according to the induction heating coil of the present invention.
The induction heating coil of the present embodiment is the one in which the second inclined portion 31 of the first embodiment is separated and adjacent to each other, and is arranged in the circumferential direction of the workpiece 10. The end portions 32 of the second inclined portions 31 are connected to each other.
Connection conductors 40 are connected to the other end portions 25 of the two second arc portions 23, and the connection conductors 40 are connected to the power supply device 50.

第二実施形態では第一実施形態と同じく、電力供給装置５０から誘導加熱コイル１に対して高周波電力が供給され、ワーク１０が誘導加熱される。このとき、誘導加熱コイル１によって磁束が生ずるが、中点Ｃ付近では、磁束が互いに打ち消しあうため、軸方向中央付近で磁束密度が高くなりにくく、ワーク１０の軸方向において誘導加熱が均等に行われることになる。   In the second embodiment, similarly to the first embodiment, high-frequency power is supplied from the power supply device 50 to the induction heating coil 1, and the work 10 is induction-heated. At this time, although the magnetic flux is generated by the induction heating coil 1, the magnetic fluxes cancel each other in the vicinity of the middle point C, so that the magnetic flux density is hardly increased near the center in the axial direction, and induction heating is performed uniformly in the axial direction of the workpiece 10. It will be.

本発明はその趣旨を逸脱しない範囲において様々な形態で実施することができる。
例えば、一つ又は二つのコイル形状をワークの円周に沿って配列した実施形態を示したが、これに限らず、三つ以上のコイル形状をワークの円周に隣接して配列してもよい。 The present invention can be implemented in various forms without departing from the spirit of the present invention.
For example, although an embodiment in which one or two coil shapes are arranged along the circumference of the workpiece has been shown, the present invention is not limited to this, and three or more coil shapes may be arranged adjacent to the workpiece circumference. Good.

また、上述した実施形態においては、第一の傾斜部及び第二の傾斜部は、展開図において一定の傾斜角で直線状に延びて形成されているが、円弧状等に形成してもよい。   In the above-described embodiment, the first inclined portion and the second inclined portion are formed to extend linearly at a constant inclination angle in the developed view, but may be formed in an arc shape or the like. .

１ 誘導加熱コイル
１０ ワーク
１１ スリット
２０ 第一の円弧部
２１ 第一の円弧部の一端部
２２ 第一の円弧部の他端部
２３ 第二の円弧部
２４ 第二の円弧部の一端部
２５ 第二の円弧部の他端部
３０ 第一の傾斜部
３１ 第二の傾斜部
３２ 第二の傾斜部の末端部
４０ 接続導体
５０ 電力供給装置
Ｏ 軸方向
Ｃ 第一の円弧部２０の中点と第二の円弧部２３の中点とを結ぶ直線の中点
Ｈ 中点Ｃを通り、第一の円弧部２０の中点と第二の円弧部２３の中点とを結ぶ直線に直交する直線 DESCRIPTION OF SYMBOLS 1 Induction heating coil 10 Workpiece | work 11 Slit 20 1st circular arc part 21 One end part of 1st circular arc part 22 The other end part of 1st circular arc part 23 2nd circular arc part 24 One end part of 2nd circular arc part 25 1st The other end portion of the second arc portion 30 The first inclined portion 31 The second inclined portion 32 The end portion of the second inclined portion 40 The connecting conductor 50 The power supply device O The axial direction C The midpoint of the first arc portion 20 A midpoint of a straight line connecting the midpoint of the second arc portion 23 H A straight line passing through the midpoint C and orthogonal to a straight line connecting the midpoint of the first arc portion 20 and the midpoint of the second arc portion 23

Claims (5)

円筒状に形成され且つ円周方向の一箇所で軸方向に沿って延びるスリットを有するワークを加熱するための誘導加熱コイルであって、
前記軸方向の一端部において前記ワークの周面から離間して円周方向に延びる第一の円弧部と、
前記軸方向の他端部において前記ワークの周面から離間して円周方向に延びる第二の円弧部と、
前記第一の円弧部と前記第二の円弧部のそれぞれ同じ側にある一端部同士を接続し、前記ワークの周面に沿って湾曲して配置される第一の傾斜部と、
前記第一の円弧部の他端部から前記第二の円弧部に向けて延びて、前記ワークの周面に沿って湾曲して配置される第二の傾斜部と、
から構成され、
前記第一の傾斜部及び第二の傾斜部は、前記第一の円弧部又は第二の円弧部から離れるにしたがい、互いに接近していることを特徴とする、誘導加熱コイル。 An induction heating coil for heating a workpiece formed in a cylindrical shape and having a slit extending in the axial direction at one place in the circumferential direction,
A first arc portion extending in the circumferential direction away from the peripheral surface of the workpiece at one end portion in the axial direction;
A second arc portion extending in the circumferential direction away from the peripheral surface of the workpiece at the other end portion in the axial direction;
Connecting the one end portions on the same side of each of the first arc portion and the second arc portion, and a first inclined portion arranged to be curved along the peripheral surface of the workpiece;
A second inclined portion that extends from the other end of the first arc portion toward the second arc portion and is curved and disposed along the peripheral surface of the workpiece;
Consisting of
The induction heating coil according to claim 1, wherein the first inclined portion and the second inclined portion are close to each other as they are separated from the first arc portion or the second arc portion. 前記第一の傾斜部及び前記第二の傾斜部が、前記第一の円弧部の中点と前記第二の円弧部の中点とを結ぶ直線の中点に向けて接近するように延び、かつ前記直線の前記中点から前記第二の円弧部に向けて互いに離れる方向に延びている、請求項１に記載の誘導加熱コイル。   The first inclined portion and the second inclined portion extend so as to approach toward a midpoint of a straight line connecting the midpoint of the first arc portion and the midpoint of the second arc portion, 2. The induction heating coil according to claim 1, wherein the induction heating coil extends in a direction away from each other toward the second arc portion from the midpoint of the straight line. 前記第一の傾斜部及び前記第二の傾斜部が、前記第一の円弧部の前記中点と前記第二の円弧部の前記中点とを結ぶ前記直線に関して対称に配置されていることを特徴とする、請求項１又は２に記載の誘導加熱コイル。   The first inclined portion and the second inclined portion are arranged symmetrically with respect to the straight line connecting the midpoint of the first arc portion and the midpoint of the second arc portion. The induction heating coil according to claim 1 or 2, characterized by the above. 前記第一の傾斜部及び前記第二の傾斜部が、前記第一の円弧部の前記中点と前記第二の円弧部の前記中点とを結ぶ前記直線の前記中点を通り前記直線と直交する直線に関して対称に配置されていることを特徴とする、請求項１又は２に記載の誘導加熱コイル。   The first inclined portion and the second inclined portion pass through the midpoint of the straight line connecting the midpoint of the first arc portion and the midpoint of the second arc portion, and the straight line. The induction heating coil according to claim 1, wherein the induction heating coil is arranged symmetrically with respect to an orthogonal straight line. 少なくとも２個の請求項１〜４の何れかに記載の誘導加熱コイルが、前記第二傾斜部を隣接して前記ワークの周方向に配置され、前記第二の傾斜部の末端部が互いに接続していることを特徴とする、誘導加熱コイル。   The induction heating coil according to any one of claims 1 to 4, wherein the induction heating coil is disposed adjacent to the second inclined portion in a circumferential direction of the workpiece, and end portions of the second inclined portion are connected to each other. An induction heating coil, characterized in that
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WO2022010285A1 (en) * 2020-07-10 2022-01-13 엘지전자 주식회사 Clothing processing device

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JPH06306476A (en) * 1993-04-19 1994-11-01 Sony Corp High frequency heating method for cylindrical member
JP2000068043A (en) * 1998-08-20 2000-03-03 High Frequency Heattreat Co Ltd Induction heating coil of tapered body
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JP2008066005A (en) * 2006-09-05 2008-03-21 High Frequency Heattreat Co Ltd Induction heating coil in circular flat surface

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JPS58189981A (en) * 1983-02-16 1983-11-05 東洋製罐株式会社 Method and device for heating metal can
JPS63202880A (en) * 1987-02-17 1988-08-22 株式会社明電舎 Induction heating coil for metal pipe
JPS63279591A (en) * 1987-05-11 1988-11-16 Meidensha Electric Mfg Co Ltd Inductor for metal pipe heating
JPH04118595U (en) * 1991-04-04 1992-10-23 富士電子工業株式会社 High frequency heating coil body
JPH0529074A (en) * 1991-07-23 1993-02-05 Fuji Denshi Kogyo Kk Manufacture of semi-opened saddle type high frequency heating coil for crankshaft
JPH06306476A (en) * 1993-04-19 1994-11-01 Sony Corp High frequency heating method for cylindrical member
JP2000068043A (en) * 1998-08-20 2000-03-03 High Frequency Heattreat Co Ltd Induction heating coil of tapered body
JP2006302635A (en) * 2005-04-20 2006-11-02 Denki Kogyo Co Ltd Cam shaft high-frequency induction heating coil, and method of cam shaft high frequency induction heating using the heating coil
JP2008066005A (en) * 2006-09-05 2008-03-21 High Frequency Heattreat Co Ltd Induction heating coil in circular flat surface

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WO2022010285A1 (en) * 2020-07-10 2022-01-13 엘지전자 주식회사 Clothing processing device

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