JPS6247192Y2 - - Google Patents
Info
- Publication number
- JPS6247192Y2 JPS6247192Y2 JP4625082U JP4625082U JPS6247192Y2 JP S6247192 Y2 JPS6247192 Y2 JP S6247192Y2 JP 4625082 U JP4625082 U JP 4625082U JP 4625082 U JP4625082 U JP 4625082U JP S6247192 Y2 JPS6247192 Y2 JP S6247192Y2
- Authority
- JP
- Japan
- Prior art keywords
- iron core
- core
- silicon steel
- heated
- convex leg
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 11
- 230000004907 flux Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005219 brazing Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
Landscapes
- General Induction Heating (AREA)
Description
【考案の詳細な説明】
この考案は、被加熱物と相対向して配置される
平面形誘導加熱コイルの改良に関するものであ
る。[Detailed Description of the Invention] This invention relates to an improvement of a planar induction heating coil that is placed opposite to an object to be heated.
従来この種のコイルとして第１図に示すものが
あつた。図において、１は硅素鋼板を積層してな
る鉄心、２はこの鉄心１に形成された凸状脚部、
３はこの凸状脚部２の周囲に巻回された巻線、４
はこの巻線に接続する交流電源、５は被加熱物で
ある。 A conventional coil of this type is shown in FIG. In the figure, 1 is an iron core made of laminated silicon steel plates, 2 is a convex leg formed on this iron core 1,
3 is a winding wire wound around this convex leg portion 2;
is an AC power source connected to this winding, and 5 is an object to be heated.
次に第２図は、前記鉄心１の詳細図で、１ａは
硅素鋼板、１ｂは締付ボルト、１ｃは絶縁チユー
ブ、１ｄは絶縁座金、１ｅは水冷式冷却銅板であ
る。 Next, FIG. 2 is a detailed view of the iron core 1, in which 1a is a silicon steel plate, 1b is a tightening bolt, 1c is an insulating tube, 1d is an insulating washer, and 1e is a water-cooled copper plate.
次にその加熱作用について説明する。交流電源
４がONされると、巻線３中に交流電流が流れ、
鉄心１中と被加熱物５中を第１図中Φで示す磁束
が発生し、被加熱物５には、この磁束Φを打消す
べく電流が誘起される。この電流は被加熱物５自
身の中で閉回路を作り、被加熱物５を加熱する。
このように、第１図に示す例では、被加熱物５の
コーナ部の加熱がなされるわけである。尚、鉄心
１は、硅素鋼板１ａを適当厚み積層し、水冷式冷
却銅板１ｅをサンドウイツチ状にはさみ、締付ボ
ルト１ｂ、絶縁チユーブ１ｃ、絶縁座金１ｄによ
つて強固に締付け、かつ絶縁されている。よつて
硅素鋼板１ａ中に発生する熱は水冷式冷却銅板１
ｅにより除去され、かつ各１枚１枚の硅素鋼板は
絶縁されているため許容値以下の発熱におさえら
れる。 Next, the heating effect will be explained. When the AC power supply 4 is turned on, an AC current flows through the winding 3,
A magnetic flux indicated by Φ in FIG. 1 is generated in the iron core 1 and the object to be heated 5, and a current is induced in the object to be heated 5 to cancel this magnetic flux Φ. This current creates a closed circuit within the object to be heated 5 itself and heats the object to be heated 5 .
In this way, in the example shown in FIG. 1, the corner portions of the object to be heated 5 are heated. The iron core 1 is made by laminating silicon steel plates 1a to a suitable thickness, sandwiching a water-cooled copper plate 1e in a sandwich shape, and firmly tightening and insulating them with a tightening bolt 1b, an insulating tube 1c, and an insulating washer 1d. . Therefore, the heat generated in the silicon steel plate 1a is transferred to the water-cooled copper plate 1.
Since each silicon steel plate is insulated, the heat generation can be kept below the allowable value.
この加熱方式に用いられるコイルは、発生する
磁束Φを、被加熱物５を介して、第１図ロにおい
て側方に位置する第２のコイルとリンクするた
め、鉄心１の端部ｂには、斜行して侵入する磁束
が極端に多くなり、端部鉄心のオーバヒートが発
生し、鉄心を構成する硅素鋼板の絶縁層が破壊さ
れ、ループ電流が流れ、一層加熱が促進されて、
ついには溶融事故や、巻線の絶縁焼損事故へと発
展するおそれがあつた。 The coil used in this heating method links the generated magnetic flux Φ with the second coil located laterally in FIG. , the magnetic flux that enters obliquely becomes extremely large, causing overheating of the end core, destroying the insulation layer of the silicon steel plate that makes up the core, causing a loop current to flow, and further promoting heating.
There was a risk that this would eventually lead to a melting accident or a winding insulation burnout accident.
この考案は上記のような欠点を除去するために
なされたもので、鉄心端部の形状を曲面とするこ
とにより、磁束集中を平準化し、発熱を軽減しよ
うとするものである。 This idea was made in order to eliminate the above-mentioned drawbacks, and by making the end of the iron core a curved surface, it is intended to level out the concentration of magnetic flux and reduce heat generation.
以下、この考案の一実施例を図について説明す
る。第３図において、２１は鉄心、２２はその凸
状脚部であり、３，４，５は第１図と同様であ
る。第４図は鉄心２１の詳細説明図で、２１ａは
硅素鋼板であり、この硅素鋼板２１ａは１枚１枚
そのコーナ部をR1の曲面に形成されており、そ
してこれらの硅素鋼板２１ａには、締付ボルト１
ｂの通る穴として長円形の穴が穿設され、積層時
に、端面を１枚ずつずらして組合わすことによ
り、その輪郭をR2に近似の曲面に構成してい
る。なお、これは硅素鋼板はプレスで打抜かれる
ので、１枚１枚、穴の位置をずらして打抜くこと
が高価につくためである。この場合反対側の端面
Ｆは平面にはならないが、構造上支障にならない
ため許容できる。 An embodiment of this invention will be described below with reference to the drawings. In FIG. 3, 21 is an iron core, 22 is a convex leg thereof, and 3, 4, and 5 are the same as in FIG. FIG. 4 is a detailed explanatory diagram of the iron core 21, in which 21a is a silicon steel plate, each of which has a corner portion formed into a curved surface of R 1 . , tightening bolt 1
An oval hole is drilled as the hole through which b passes, and by shifting the end faces one by one and combining them during lamination, the outline is formed into a curved surface approximately similar to R 2 . This is because silicon steel plates are punched out using a press, and punching each sheet by shifting the position of the holes is expensive. In this case, the opposite end face F is not flat, but this is acceptable since it does not pose a problem in terms of structure.
このように構成したコイルの作用は従来と同じ
であるが、鉄心２１の端部に第４図中R1とR2で
示す曲面を設けたため、磁束の集中が避けられ、
発熱が平準化されるので、端部のオーバヒートを
低減し得る。又、水冷式冷却銅板は普通外周に角
銅管をロー付して作られるため、角がＲ状になつ
ている。そのためこのＲよりはみ出している硅素
鋼板のエツジは冷却程度が低い。本考案の如き曲
面状の硅素鋼板にすれば、はみ出し部がなくなる
ので、冷却効果も格段によくなるものである。 The effect of the coil configured in this way is the same as that of the conventional one, but since the curved surfaces shown as R 1 and R 2 in FIG. 4 are provided at the ends of the iron core 21, concentration of magnetic flux can be avoided.
Since the heat generation is leveled, overheating at the ends can be reduced. Furthermore, water-cooled cooling copper plates are usually made by brazing square copper tubes around the outer periphery, so the corners are rounded. Therefore, the edge of the silicon steel plate that protrudes from this radius is cooled to a low degree. If a curved silicon steel plate is used as in the present invention, there will be no protruding parts, so the cooling effect will be much better.
なお上記実施例では、コイルを３組用いて、被
加熱物のコーナ部を加熱する場合を示したが、１
組のコイルで加熱する場合でも、磁束は鉄心の端
部で曲つているので、同様の効果が期待できる。
よつて、平面加熱用に用いられるあらゆる鉄心付
コイルに適用できることはいうまでもない。又、
上記実施例ではR2を作るのに、長円の穴にして
１枚ずつずらせて積層したが、１枚ずつ穴の位置
をかえて作つてもよい。 In the above embodiment, a case was shown in which three sets of coils were used to heat the corner part of the object to be heated.
Even when heating with a set of coils, the same effect can be expected because the magnetic flux is curved at the ends of the iron core.
Therefore, it goes without saying that the present invention can be applied to any iron-core coil used for planar heating. or,
In the above embodiment, to make R 2 , the sheets were laminated one by one with oval holes made and stacked one by one, but the holes may be changed one by one.
以上のように本考案によれば、鉄心の局部オー
バヒートが避けられるため、寿命が長く信頼性の
高い設備を供給できる効果がある。 As described above, according to the present invention, since local overheating of the iron core can be avoided, it is possible to provide equipment with a long life and high reliability.
第１図は従来のコイルの使用状態を示す正面図
イと側面図ロ、第２図は第１図のものに使用され
る鉄心の正面図イとそのＡ−Ａ線断面図ロ、第３
図、第４図はこの考案の一実施例を示すもので、
夫々第１図、第２図に対応する図である。
図中、２１は鉄心、２１ａは硅素鋼板、２２は
凸状脚部、R1、R2は曲面である。尚図中、同一
符号は同一又は相当部分を示す。
Figure 1 is a front view (A) and side view (B) showing the state of use of a conventional coil, Figure 2 is a front view (A) and a cross-sectional view (B) of the iron core used in the one in Figure 1, and
Figure 4 shows an example of this invention.
FIG. 2 is a diagram corresponding to FIG. 1 and FIG. 2, respectively. In the figure, 21 is an iron core, 21a is a silicon steel plate, 22 is a convex leg, and R 1 and R 2 are curved surfaces. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (1)
の周囲に巻回され交流電流を印加される巻線とか
らなる誘導加熱コイルにおいて、前記鉄心の凸状
脚部の端面を囲むエツジ４辺を曲面に形成したこ
とを特徴とする誘導加熱用コイル。 In an induction heating coil consisting of an iron core having a convex leg and a winding wound around the convex leg of the core and to which an alternating current is applied, an edge surrounding the end face of the convex leg of the core is provided. An induction heating coil characterized by having four sides formed into curved surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4625082U JPS58148896U (en) | 1982-03-31 | 1982-03-31 | induction heating coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4625082U JPS58148896U (en) | 1982-03-31 | 1982-03-31 | induction heating coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58148896U JPS58148896U (en) | 1983-10-06 |
| JPS6247192Y2 true JPS6247192Y2 (en) | 1987-12-25 |
Family
ID=30057251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4625082U Granted JPS58148896U (en) | 1982-03-31 | 1982-03-31 | induction heating coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58148896U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7124515B2 (en) * | 2018-07-25 | 2022-08-24 | 日本製鉄株式会社 | Induction heating equipment for metal strips |
-
1982
- 1982-03-31 JP JP4625082U patent/JPS58148896U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58148896U (en) | 1983-10-06 |
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