JPH0425840Y2 - - Google Patents
Info
- Publication number
- JPH0425840Y2 JPH0425840Y2 JP1985143490U JP14349085U JPH0425840Y2 JP H0425840 Y2 JPH0425840 Y2 JP H0425840Y2 JP 1985143490 U JP1985143490 U JP 1985143490U JP 14349085 U JP14349085 U JP 14349085U JP H0425840 Y2 JPH0425840 Y2 JP H0425840Y2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- heating
- frequency induction
- induction heating
- heating coil
- 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
- 238000010438 heat treatment Methods 0.000 claims description 45
- 230000006698 induction Effects 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000000137 annealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- MDOAAHGPXOGVQG-UHFFFAOYSA-N ethene;propane Chemical group C=C.CCC MDOAAHGPXOGVQG-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- General Induction Heating (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は連結型シート状高周波誘導加熱コイル
に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a connected sheet-like high frequency induction heating coil.
例えば、ボイラー用鋼管などは、溶接終了後応
力除去のために焼鈍を行うものが多く、焼鈍作業
は、従来、プロパンエチレン又はその他の可燃ガ
スによる加熱，ニクロム線による抵抗加熱および
高周波誘導加熱などによつている。
For example, steel pipes for boilers are often annealed to relieve stress after welding. Conventionally, annealing has been performed by heating with propane ethylene or other combustible gas, resistance heating with nichrome wire, and high-frequency induction heating. It's tottering.
しかしながら、可燃ガスによる加熱は温度制御
が容易でなく、電力による抵抗線加熱では、温度
制御は精度よく行うことができるが、抵抗線によ
る間接加熱であるから、効率が悪く、ニクロム線
などを加熱物へ装着する作業が煩雑である。 However, temperature control is not easy when heating with combustible gas, and while resistance wire heating using electricity allows temperature control to be performed accurately, it is indirect heating using resistance wire, which is inefficient and does not heat nichrome wire, etc. The work of attaching it to an object is complicated.
一方高周波誘導加熱は、温度制御が容易に行な
われ、直接に被加熱物が内部から発熱するので効
率が非常に良いのであるが、例えば第３図斜視図
に示すように、突合せ溶接に適用した長尺鋼管０
１に耐熱絶縁性套管０３を外挿し、この上に誘導
加熱コイル０２を巻かなければならず、例えば
50×12tの低合金ボイラー用鋼管の焼鈍に必要
なコイル巻数は使用する高周波の周波数及び出力
によつて若干異なるが、約30回となるから、長尺
鋼管に誘導加熱コイル０２を巻回するための作業
が大変で実用的でない。そこで、可撓性耐熱絶縁
シート上に可撓性電線をうずまき状に布設したシ
ート状高周波誘導加熱コイルが考案され、鋼管に
巻回することなく、同様な効果を得る方法が提供
された。例えば第４図はシート状コイルの展開斜
視図であり、０４は渦巻状に巻かれた可撓性加熱
コイル、０５は可撓性耐熱絶縁シートで可撓性加
熱コイル０４は適宜間隔で長方形うずまき状にこ
の上に沿つて布設される。 On the other hand, high-frequency induction heating is very efficient because the temperature can be easily controlled and heat is generated directly from within the heated object. Long steel pipe 0
1, a heat-resistant insulating sleeve 03 must be extrapolated, and an induction heating coil 02 must be wound on top of this, for example.
The number of coil turns required for annealing a 50 x 12 t low alloy boiler steel pipe varies slightly depending on the frequency and output of the high frequency used, but it is approximately 30 turns, so wind the induction heating coil 02 around the long steel pipe. The work involved is difficult and impractical. Therefore, a sheet-like high-frequency induction heating coil was devised in which flexible electric wires were laid in a spiral pattern on a flexible heat-resistant insulating sheet, and a method of obtaining the same effect without winding the coil around a steel pipe was provided. For example, Fig. 4 is an exploded perspective view of a sheet-like coil, where 04 is a flexible heating coil wound in a spiral shape, 05 is a flexible heat-resistant insulating sheet, and the flexible heating coil 04 is a rectangular spiral wound at appropriate intervals. It is laid along this top.
第４図のように構成されたシート状高周波誘導
加熱コイルは、加熱を必要とする部分の長さが長
い場合、このシート状コイルを極端に一辺を長く
し、加熱部の長さを大きくすると、局部的に磁束
密度が変化し加熱むらが生じるため、通常は正方
形に近い形をとつている。しかし、正方形に近い
形状の場合必要加熱幅に比べ長さが長い時はシー
ト状コイルの一辺が大きくなり不必要な部分まで
加熱する不具合がある。
When the sheet-like high-frequency induction heating coil configured as shown in Figure 4 has a long part that requires heating, it is possible to make one side of the sheet-like coil extremely long and increase the length of the heating part. , because the magnetic flux density changes locally and uneven heating occurs, the shape is usually close to a square. However, in the case of a shape close to a square, if the length is longer than the required heating width, one side of the sheet-like coil becomes large, causing the problem that unnecessary parts are heated.
本考案はこのような事情に鑑みて提案されたも
ので、加熱部の長さが長い個所の焼鈍などに、付
設作業が簡単で、経済的な連結型シート状高周波
誘導加熱コイルを提供とすることを目的とする。 The present invention was proposed in view of these circumstances, and aims to provide a connected sheet-shaped high-frequency induction heating coil that is easy to install and economical for annealing of parts with long heating parts. The purpose is to
本考案による連結型シート状高周波誘導加熱コ
イルは、可撓性耐熱絶縁シート上に可撓性電線を
うずまき状に布設したシート状高周波誘導加熱コ
イルを複数個連結してなることを特徴とし、例え
ばシート状高周波誘導加熱コイルを複数個縦列ま
たは横列に連結してなるものである。
The connected sheet-like high-frequency induction heating coil according to the present invention is characterized in that it is formed by connecting a plurality of sheet-like high-frequency induction heating coils in which flexible electric wires are laid in a spiral shape on a flexible heat-resistant insulating sheet. It is made up of a plurality of sheet-like high-frequency induction heating coils connected in vertical or horizontal rows.
本考案によれば上記のような構成により、長大
な加熱部を必要とする部分の高周波誘導加熱コイ
ルの付設作業が簡単で且つ経済的な加熱コイルを
得ることができる。
According to the present invention, with the above-described configuration, it is possible to obtain an economical heating coil in which the work of attaching the high-frequency induction heating coil to a portion that requires a long heating section is simple and economical.
本考案を長尺鋼管の焼鈍に適用した一実施例を
図面について説明すると、第１図はその斜視図、
第２図は第１図の加熱コイルの展開斜視図であ
る。
An embodiment in which the present invention is applied to annealing long steel pipes will be explained with reference to the drawings. Fig. 1 is a perspective view thereof;
FIG. 2 is an exploded perspective view of the heating coil of FIG. 1.
第１図において、１は長尺鋼管、２，２′は渦
巻状に巻かれたシート状可撓性加熱コイル、３，
３′は例えばガラス繊維、石綿、ゼラミツク製等
の可撓性耐熱絶縁シートで、加熱コイル２，２′
は適宜間隔で長方形うずまき状にこの上に沿つて
布設される。４，４′，５，５′は加熱コイル２，
２′のそれぞれ外部引出線である。この２枚の可
撓性加熱コイル２，２′は連結部６で連結されて
いる。このように２枚のシート状加熱コイル２，
２′を連結する場合に渦巻状に巻かれた加熱コイ
ル２と加熱コイル２′との最外側の相隣りする線
に流れる電流の方向を同一になるように接続する
ことによつて加熱コイル２，２′同志の干渉を防
止できる。 In Fig. 1, 1 is a long steel pipe, 2 and 2' are spirally wound sheet-like flexible heating coils, 3,
3' is a flexible heat-resistant insulating sheet made of glass fiber, asbestos, gelatin, etc., and the heating coils 2, 2'
are laid along this top in a rectangular spiral shape at appropriate intervals. 4, 4', 5, 5' are heating coils 2,
2' are respectively external leader lines. These two flexible heating coils 2, 2' are connected by a connecting portion 6. In this way, two sheet-like heating coils 2,
2', by connecting the spirally wound heating coil 2 and the heating coil 2' so that the direction of the current flowing in the outermost adjacent wires is the same. , 2' can be prevented from interfering with each other.
このように構成された本考案の連結型シート状
高周波誘導加熱コイルは、第１図に示すように、
長尺鋼管１の焼鈍を要する部分に耐熱絶縁シート
３，３′を下にして、２枚の加熱コイル２，２′を
円筒状に湾曲して巻きつけたのち、外部引出し線
４と４′を接続し、５と５′を経て（加熱コイルを
直列に接続した場合）高周波電源７により通電さ
れる。 As shown in FIG.
After winding two heating coils 2, 2' into a cylindrical shape with the heat-resistant insulating sheets 3, 3' facing down around the part of the long steel pipe 1 that requires annealing, external lead wires 4 and 4' are wound. is connected and energized by the high frequency power source 7 via 5 and 5' (if the heating coils are connected in series).
そうすると、長尺鋼管に数十回巻回されたらせ
ん状加熱コイルと同様の高周波誘導加熱を行うこ
とができる。 In this way, it is possible to perform high-frequency induction heating similar to that of a spiral heating coil wound several tens of times around a long steel pipe.
要するに本考案によれば、可撓性耐熱絶縁線シ
ート上に可撓性電線をうずまき状に布設したシー
ト状加熱コイルを複数個連結したことにより加熱
部の範囲を自由に選択できる効果を有する経済的
なシート状高周波誘導加熱コイルを得るから、本
考案は産業上極めて有益なものである。
In short, according to the present invention, by connecting a plurality of sheet-shaped heating coils in which flexible electric wires are laid in a spiral shape on a flexible heat-resistant insulated wire sheet, the heating area can be freely selected. The present invention is industrially extremely useful because it provides a sheet-like high-frequency induction heating coil.
第１図は本考案の一実施例の構成を示す斜視
図、第２図は第１図における加熱コイルの展開
図、第３図および第４図はそれぞれ従来例を示す
図である。
２，２′……シート状可撓性加熱コイル、３，
３′……可撓性耐熱絶縁シート。
FIG. 1 is a perspective view showing the configuration of an embodiment of the present invention, FIG. 2 is a developed view of the heating coil in FIG. 1, and FIGS. 3 and 4 are views showing conventional examples, respectively. 2, 2'... sheet-like flexible heating coil, 3,
3'...Flexible heat-resistant insulation sheet.
Claims (1)
き状に布設したシート状高周波誘導加熱コイルを
複数個連結してなることを特徴とする連結型シー
ト状高周波誘導加熱コイル。 A connected sheet-like high-frequency induction heating coil characterized in that it is formed by connecting a plurality of sheet-like high-frequency induction heating coils in which flexible electric wires are laid in a spiral shape on a flexible heat-resistant insulating sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985143490U JPH0425840Y2 (en) | 1985-09-19 | 1985-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985143490U JPH0425840Y2 (en) | 1985-09-19 | 1985-09-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6251692U JPS6251692U (en) | 1987-03-31 |
| JPH0425840Y2 true JPH0425840Y2 (en) | 1992-06-22 |
Family
ID=31053221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985143490U Expired JPH0425840Y2 (en) | 1985-09-19 | 1985-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0425840Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51117912A (en) * | 1975-04-09 | 1976-10-16 | Hitachi Ltd | Lining for induction heating coil |
-
1985
- 1985-09-19 JP JP1985143490U patent/JPH0425840Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51117912A (en) * | 1975-04-09 | 1976-10-16 | Hitachi Ltd | Lining for induction heating coil |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6251692U (en) | 1987-03-31 |
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