JPS6035985Y2 - induction heating device - Google Patents
induction heating deviceInfo
- Publication number
- JPS6035985Y2 JPS6035985Y2 JP9471879U JP9471879U JPS6035985Y2 JP S6035985 Y2 JPS6035985 Y2 JP S6035985Y2 JP 9471879 U JP9471879 U JP 9471879U JP 9471879 U JP9471879 U JP 9471879U JP S6035985 Y2 JPS6035985 Y2 JP S6035985Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal plate
- induction heating
- heating device
- heated
- width
- 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
Landscapes
- General Induction Heating (AREA)
Description
【考案の詳細な説明】
この考案は特に非磁性材料からなる金属板の端部を誘導
加熱する誘導カロ熱装置の改良に関するものである。[Detailed Description of the Invention] This invention particularly relates to an improvement of an induction caloric heating device for inductively heating the end portion of a metal plate made of a non-magnetic material.
第１図および第２図は従来のこの種誘導加熱装置を示す
平面図と側面図で、１は非磁性材料からなり加熱すべき
帯状の金属板、２，２はこの金属板１の両側において互
いて所定間隙をあけて対向し、上記金属板１を加熱する
ための一対の誘導加熱コイル、３，３はこの誘導加熱コ
イル２，２をそれぞれ巻回し、この誘導加熱コイル２，
２の漏洩磁束を少なくするための一対の鉄心、４は上記
誘導加熱コイル２，２に並列接続された交流電源である
。1 and 2 are a plan view and a side view of a conventional induction heating device of this kind, in which 1 is a strip-shaped metal plate to be heated made of a non-magnetic material, and 2 and 2 are on both sides of this metal plate 1. A pair of induction heating coils 3, 3 are wound around the induction heating coils 2, 2, respectively, for heating the metal plate 1, facing each other with a predetermined gap therebetween.
A pair of iron cores 2 are used to reduce leakage magnetic flux, and 4 is an AC power source connected in parallel to the induction heating coils 2, 2.
従来の誘導加熱装置は上記のように構成されているので
、第２図に示すように誘導加熱コイル２．２に交流電源
１１が流れると、金属板１にはこれと逆向きの誘導電流
１２が発生し、この電磁誘導作用によって金属板１が加
熱されるわけであるが、このような手段で金属板１の端
部を加熱する場合には、誘導加熱コイル２の巾寸法を、
金属板１の巾寸法Ｗよりも大きくすることによって行な
っている。Since the conventional induction heating device is configured as described above, when an AC power source 11 flows through the induction heating coil 2.2 as shown in FIG. 2, an induced current 12 in the opposite direction flows through the metal plate 1. occurs, and the metal plate 1 is heated by this electromagnetic induction action. When heating the end of the metal plate 1 by such means, the width dimension of the induction heating coil 2 is
This is done by making the width W larger than the width W of the metal plate 1.
すなわち、金属板１内の誘導電流１２は、第１図の電流
分布図に示すように、中央部において広い断面積内を流
れるため余り加熱されないが、金属板１の端部において
は、狭い断面積内を全電流が流れるため、その加熱が可
能となるわけである。That is, as shown in the current distribution diagram of FIG. 1, the induced current 12 in the metal plate 1 does not heat up much because it flows within a wide cross-sectional area at the center, but at the ends of the metal plate 1 it flows through a narrow cross-section. Since the entire current flows within the area, heating is possible.
しかしながら、上述した従来の誘導加熱装置によれば、
金属板１の端部の加熱を行なうと、金属板１の中央部も
加熱することになり、これは不必要な加熱電源を消費す
ることになり、設備コストおよび運転コストのアップを
招く欠点がある。However, according to the conventional induction heating device described above,
When the ends of the metal plate 1 are heated, the center of the metal plate 1 is also heated, which consumes unnecessary heating power, which has the disadvantage of increasing equipment costs and operating costs. be.
この考案は、かかる点に着目してなされたもので、加熱
を必要としない金属板１の中央部を加熱せず、金属板１
の端部のみを加熱する誘導加熱装置を提供しようとする
ものである。This invention was made with attention to this point, and the central part of the metal plate 1, which does not require heating, is not heated, and the metal plate 1 is heated.
The purpose of the present invention is to provide an induction heating device that heats only the end portion of the.
すなわち、第３図および第４図は何れもこの考案の一実
施例を示すもので、２１は非磁性材料からなり、加熱す
べき帯状の金属板、２２．２２はこの金属板２１の両側
において互いに所定間隙をあけて対向し、上記金属板２
１を加熱するための一対の誘導加熱コイル、２３．２３
はこの誘導加熱コイル２２．２２をそれぞれ巻回し、こ
の誘導加熱コイル２２．２２の漏洩磁束を少なくするた
めの一対の鉄心、２４は上記誘導加熱コイル２２，２２
に並列接続された交流電源である。That is, FIGS. 3 and 4 both show an embodiment of this invention, where 21 is a strip-shaped metal plate to be heated and made of a non-magnetic material, and 22 and 22 are metal plates on both sides of this metal plate 21. facing each other with a predetermined gap, the metal plates 2
a pair of induction heating coils for heating 1, 23.23
24 is a pair of iron cores around which the induction heating coils 22 and 22 are wound to reduce the leakage magnetic flux of the induction heating coils 22 and 22;
It is an AC power supply connected in parallel to the
しかして、上記誘導加熱コイル２２は、第３図に示すよ
うに、上記金属板２１を横切り、そしてこの金属板２１
の巾寸法Ｗよりも長くした第１導体部２２ａと、上記金
属板２１の端部と並行に延長し、上記金属板２１の巾寸
法Ｗよりも長くした第２導体部２２ｂとによって構成さ
れている。Thus, the induction heating coil 22 crosses the metal plate 21, as shown in FIG.
The first conductor part 22a is longer than the width W of the metal plate 21, and the second conductor part 22b is longer than the width W of the metal plate 21. There is.
この考案の誘導加熱装置にかかる誘導加熱コイル２２は
、これを一つのループとして考えたとき、金属板２１の
端部を効率よく加熱するために、この金属板２１の巾寸
法Ｗよりも第１導体部２２ａの長さを長くし、また金属
板２１の中央部の温度上昇を抑えるために、端部加熱ゾ
ーンを中央部ゾーンよりも長くする。The induction heating coil 22 of the induction heating device of this invention is designed to have a diameter larger than the width W of the metal plate 21 in order to efficiently heat the end of the metal plate 21 when considered as one loop. In order to increase the length of the conductor portion 22a and to suppress a rise in temperature at the center of the metal plate 21, the end heating zone is made longer than the center zone.
すなわち金属板２１の巾寸法Ｗよりも第２導体部２２ｂ
の長さを長くすることによって金属板端部の効率的な加
熱が可能としたものである。In other words, the second conductor portion 22b is smaller than the width W of the metal plate 21.
By increasing the length of the metal plate, it is possible to efficiently heat the edge of the metal plate.
したがって、この考案によれば、第５図の特性図によっ
ても明らかなように、誘導加熱コイル２２の第２導体部
２２ｂの長さ／金属板２１の巾寸法Ｗの比を１よりも大
きくすることによって、金属板２１の中央部を加熱する
ことなく、端部の加熱を経済的に行なうことができる優
れた実用的効果を有するものである。Therefore, according to this invention, as is clear from the characteristic diagram in FIG. This has an excellent practical effect in that the end portions of the metal plate 21 can be heated economically without heating the center portion.
なお、この考案はたとえば、鍛接管等の端部加熱に用い
られるほか、ステンレス管等の溶接前の予熱、あるいは
熱間圧延中の端部冷却防止等に用い得られることはいう
までもない。It goes without saying that this invention can be used, for example, for heating the ends of forge-welded pipes, etc., as well as for preheating stainless steel pipes, etc. before welding, or for preventing the ends from cooling during hot rolling.
第１図および第２図は何れも従来の誘導加熱装置を示す
もので、第１図は平面図、第２図は側面図である。
第３図〜第５図は何れもこの考案の一実施例を示すもの
で、第３図は平面図、第４図は側面図、第５図は誘導加
熱コイル２２の第２導体部２２ｂの長さ／金属板２１の
巾寸法Ｗの比による特性図を示している。
図面中、２１は金属板、２２は誘導加熱コイル、２２ａ
は第１導体部、２２ｂは第２導体部、２３は鉄心、２４
は交流電源である。
なお、図中同一符号は同一または相当部分を示す。Both FIGS. 1 and 2 show a conventional induction heating device, with FIG. 1 being a plan view and FIG. 2 being a side view. Figures 3 to 5 all show an embodiment of this invention; Figure 3 is a plan view, Figure 4 is a side view, and Figure 5 is a diagram of the second conductor portion 22b of the induction heating coil 22. A characteristic diagram according to the ratio of length/width dimension W of the metal plate 21 is shown. In the drawing, 21 is a metal plate, 22 is an induction heating coil, 22a
is the first conductor part, 22b is the second conductor part, 23 is the iron core, 24
is an AC power source. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (2)
熱コイルを有するものに於て、上記誘導加熱コイルの各
辺の長さを上記金属板の巾寸法よりも全て長くしたこと
を特徴とする誘導加熱装置。(1) A device having a substantially rectangular induction heating coil corresponding to the metal plate to be heated, characterized in that the length of each side of the induction heating coil is longer than the width of the metal plate. induction heating device.
とする実用新案登録請求の範囲第１項記載の誘導加熱装
置。(2) The induction heating device according to claim 1, wherein the metal plate to be heated is made of a non-magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9471879U JPS6035985Y2 (en) | 1979-07-09 | 1979-07-09 | induction heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9471879U JPS6035985Y2 (en) | 1979-07-09 | 1979-07-09 | induction heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5613398U JPS5613398U (en) | 1981-02-04 |
| JPS6035985Y2 true JPS6035985Y2 (en) | 1985-10-25 |
Family
ID=29327593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9471879U Expired JPS6035985Y2 (en) | 1979-07-09 | 1979-07-09 | induction heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6035985Y2 (en) |
-
1979
- 1979-07-09 JP JP9471879U patent/JPS6035985Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5613398U (en) | 1981-02-04 |
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