JPS6144395Y2 - - Google Patents
Info
- Publication number
- JPS6144395Y2 JPS6144395Y2 JP4625182U JP4625182U JPS6144395Y2 JP S6144395 Y2 JPS6144395 Y2 JP S6144395Y2 JP 4625182 U JP4625182 U JP 4625182U JP 4625182 U JP4625182 U JP 4625182U JP S6144395 Y2 JPS6144395 Y2 JP S6144395Y2
- Authority
- JP
- Japan
- Prior art keywords
- silicon steel
- plate
- insulating
- plates
- laminated
- 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
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000010445 mica Substances 0.000 claims description 9
- 229910052618 mica group Inorganic materials 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims 4
- 150000003376 silicon Chemical class 0.000 claims 2
- 230000004907 flux Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
Landscapes
- General Induction Heating (AREA)
Description
【考案の詳細な説明】
この考案は、スラブエツジヒータ等に用いられ
る鉄心付平面加熱用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 flat heating coil with an iron core used in a slab edge heater or the like.
およそこの種のコイルは第1図に示すような配
置で使用され、また従来のコイルの構造は第2図
に示されているようなものであつた。まず第1図
において、1は巻線、2は凸状脚部3を有する鉄
心、4は前記巻線1に交流電流を印加する電源、
5は被加熱物、6は磁束である。次に第2図にお
いて、7は硅素鋼板、6は水冷銅板、9は絶縁ボ
ルト、10はマイカ薄板であり、これら7〜10
により鉄心2を構成している。 Generally, this type of coil is used in an arrangement as shown in FIG. 1, and the structure of a conventional coil is as shown in FIG. First, in FIG. 1, 1 is a winding, 2 is an iron core having a convex leg portion 3, 4 is a power source for applying alternating current to the winding 1,
5 is an object to be heated, and 6 is a magnetic flux. Next, in FIG. 2, 7 is a silicon steel plate, 6 is a water-cooled copper plate, 9 is an insulating bolt, and 10 is a mica thin plate.
constitutes the iron core 2.
次にその作用について説明する。以上のような
構成において、磁束6が硅素鋼板7を通過する
と、一枚一枚薄板ではあるが、エデイ損とヒステ
リシス損を発生し、発熱する。硅素鋼板7の積層
部の中央にあるマイカ薄板10は、硅素鋼板7に
誘起される電圧によつてループ状に流れる電流を
遮断するために配置され、その両側の硅素鋼板7
は水冷銅板8によつて冷却されている。ところが
従来の鉄心では、図示のように前記マイカ薄板1
0は水冷銅板8によつて区画された硅素鋼板7の
積層部の中央に1枚ずつ挿入されているのみであ
つた。 Next, its effect will be explained. In the above configuration, when the magnetic flux 6 passes through the silicon steel plates 7, although each of the plates is thin, eddy loss and hysteresis loss occur, and heat is generated. The mica thin plate 10 in the center of the laminated portion of the silicon steel plate 7 is arranged to interrupt the current flowing in a loop due to the voltage induced in the silicon steel plate 7, and the silicon steel plate 7 on both sides
is cooled by a water-cooled copper plate 8. However, in the conventional iron core, as shown in the figure, the mica thin plate 1
No. 0 was only inserted one by one into the center of the laminated portion of the silicon steel plates 7 divided by the water-cooled copper plates 8.
しかるに第1図でもわかるように、磁束6の流
れは鉄心2の凸状脚部3の端部に集中する傾向が
あり、凸状脚部3の発熱は均等ではないため、端
部の硅素鋼板7の温度が異常に上昇し、最悪のケ
ースでは巻線の絶縁焼損や硅素鋼板の溶融という
事故にまで発展するおそれがあつた。 However, as can be seen in FIG. 1, the flow of magnetic flux 6 tends to concentrate at the ends of the convex legs 3 of the iron core 2, and since the heat generation of the convex legs 3 is not uniform, the silicon steel plate at the end 7's temperature rose abnormally, and in the worst case, there was a risk of an accident resulting in burnout of the winding insulation or melting of the silicon steel plate.
この考案は上記のような従来のものの欠点を除
去するためになされたもので、磁束集中のはげし
い両端部の硅素鋼板をマイカ薄板によつて多数ブ
ロツクに区画することにより、発熱の低減を図ろ
うとするものである。 This idea was made in order to eliminate the drawbacks of the conventional ones as described above, and it attempted to reduce heat generation by dividing the silicon steel plate at both ends, where magnetic flux concentration is severe, into multiple blocks with mica thin plates. It is something to do.
即ち第3図はこの考案の一実施例を示すもの
で、図において、7,8,9,10は第2図と同
様であるが、両端部の水冷銅板8間の硅素鋼板7
の積層部には、約5mmピツチに0.1mm厚のマイカ
薄板10が挿入されている。なお中央の積層部に
は従来と同様に1枚だけ0.1mm厚のマイカ薄板1
0が挿入されており、硅素鋼板7の積層厚さは水
冷銅板間の厚さで30mmである。 That is, FIG. 3 shows an embodiment of this invention. In the figure, 7, 8, 9, and 10 are the same as in FIG. 2, but the silicon steel plate 7 between the water-cooled copper plates 8 at both ends is
Mica thin plates 10 with a thickness of 0.1 mm are inserted into the laminated portion at a pitch of about 5 mm. In addition, in the central laminated part, there is only one mica thin plate 1 with a thickness of 0.1 mm, as in the past.
0 is inserted, and the laminated thickness of the silicon steel plates 7 is 30 mm between the water-cooled copper plates.
このように構成すると、両端部硅素鋼板7の冷
却効果は若干悪くなるが、絶縁板で区切られた表
面積内の磁束が減少し、誘起電圧が小さくなるた
め、ループ電流が阻止されて発熱が極端に小さく
なる。 With this configuration, the cooling effect of the silicon steel plates 7 at both ends is slightly deteriorated, but the magnetic flux within the surface area separated by the insulating plates is reduced and the induced voltage is reduced, so the loop current is blocked and heat generation becomes extreme. becomes smaller.
なお上記実施例では5mmピツチでマイカ薄板を
配置したが、磁束の集中の度合に応じてその配置
間隔はもつと小さくしてもよい。又、マイカ薄板
は、耐熱性有機絶縁板ペーパでもよいし、硅素鋼
板にセラミツクコーテイングした薄膜でもよい。 In the above embodiment, the mica thin plates were arranged at a pitch of 5 mm, but the arrangement interval may be made smaller depending on the degree of concentration of magnetic flux. Further, the mica thin plate may be a heat-resistant organic insulating paper, or a thin film formed by coating a silicon steel plate with ceramic.
本考案は以上のような簡単な構成変更によつ
て、鉄心2の温度を安全限界内におさえることが
でき、コイルの寿命をのばし、信頼性を高め得る
効果がある。 The present invention has the effect of suppressing the temperature of the iron core 2 within a safe limit by making the above-mentioned simple configuration changes, extending the life of the coil, and increasing reliability.
なお本考案は開放脚に巻線を周回させたコイル
から、すべての用途に用いられるコイルに適用で
きるものである。 The present invention can be applied to coils used for all purposes, including coils in which windings are wound around open legs.
第1図はコイルの使用状態を示す正面図イと側
面図ロ、第2図は従来のコイルを示すもので、第
1図の−線断面図、第3図は本考案の一実施
例を示すもので、第2図に対応する図である。
図中、1は巻線、2は鉄心、3は凸状脚部、7
は硅素鋼板、8は水冷銅板、10は絶縁薄板であ
る。尚図中、同一符号は同一または相当する部分
を示す。
Fig. 1 shows a front view A and a side view B showing how the coil is used, Fig. 2 shows a conventional coil, a sectional view taken along the - line in Fig. 1, and Fig. 3 shows an embodiment of the present invention. This is a diagram corresponding to FIG. 2. In the figure, 1 is a winding, 2 is an iron core, 3 is a convex leg, and 7
8 is a silicon steel plate, 8 is a water-cooled copper plate, and 10 is an insulating thin plate. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (1)
心、この鉄心の凸状脚部の周囲に巻回され交番
電流を印加される巻線、前記鉄心の硅素鋼板積
層方向に挟み込まれた複数枚の水冷銅板、この
水冷銅板間の約半分の位置において硅素鋼板積
層中に挟み込まれた絶縁薄板を有し、かつこれ
らを絶縁ボルトで積層方向に締め付けるものに
おいて、積層厚方向の両端部の水冷銅板に挟ま
れた区画内の硅素鋼板積層部のみに、複数枚の
絶縁薄板を挟み込んでいることを特徴とする誘
導加熱用コイル。 (2) 絶縁薄板は、マイカ板からなる実用新案登録
請求範囲第1項記載の誘導加熱用コイル。 (3) 絶縁薄板は、耐熱性有機絶縁板ペーパからな
る実用新案登録請求範囲第1項記載の誘導加熱
用コイル。 (4) 絶縁薄板は、該当部の硅素鋼板1枚の片面に
セラミツクコーテイングされた薄膜からなる実
用新案登録請求範囲第1項記載の誘導加熱用コ
イル。[Claims for Utility Model Registration] (1) An iron core made of laminated silicon steel plates having convex legs, a winding wound around the convex legs of this iron core and to which an alternating current is applied, and the iron core. Multiple water-cooled copper plates sandwiched in the laminated direction of the silicon steel plates, and a thin insulating plate sandwiched between the laminated silicon steel plates at approximately half the positions between the water-cooled copper plates, and these are tightened in the laminated direction with insulating bolts. An induction heating coil characterized in that a plurality of insulating thin plates are sandwiched only in the silicon steel plate laminated portion in the section sandwiched between the water-cooled copper plates at both ends in the laminated thickness direction. (2) The induction heating coil according to claim 1 of the utility model registration, wherein the insulating thin plate is a mica plate. (3) The induction heating coil according to claim 1, wherein the thin insulating plate is made of heat-resistant organic insulating paper. (4) The induction heating coil according to claim 1 of the utility model registration, wherein the insulating thin plate is a thin film coated with ceramic on one side of a silicon steel plate in the relevant part.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4625182U JPS58148897U (en) | 1982-03-31 | 1982-03-31 | induction heating coil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4625182U JPS58148897U (en) | 1982-03-31 | 1982-03-31 | induction heating coil |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58148897U JPS58148897U (en) | 1983-10-06 |
JPS6144395Y2 true JPS6144395Y2 (en) | 1986-12-13 |
Family
ID=30057252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4625182U Granted JPS58148897U (en) | 1982-03-31 | 1982-03-31 | induction heating coil |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58148897U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6528712B2 (en) * | 2016-04-18 | 2019-06-12 | Jfeスチール株式会社 | Iron core for induction heating coil, induction heating coil, and heating apparatus |
-
1982
- 1982-03-31 JP JP4625182U patent/JPS58148897U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58148897U (en) | 1983-10-06 |
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