JP2003109733A - Induction heating device - Google Patents
Induction heating deviceInfo
- Publication number
- JP2003109733A JP2003109733A JP2001299096A JP2001299096A JP2003109733A JP 2003109733 A JP2003109733 A JP 2003109733A JP 2001299096 A JP2001299096 A JP 2001299096A JP 2001299096 A JP2001299096 A JP 2001299096A JP 2003109733 A JP2003109733 A JP 2003109733A
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- JP
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- Prior art keywords
- coil
- coils
- turns
- induction heating
- divided
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はラインを搬送される
被加熱材をソレノイドコイルの内側に通過させて被加熱
材を加熱する誘導加熱装置のコイルの配列構造に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil arrangement structure of an induction heating device for heating a material to be heated which is conveyed through a line by passing it inside a solenoid coil.
【０００２】[0002]
【従来の技術】一般に板状の金属材料（被加熱材）１を
連続的に誘導加熱する場合、図５に示すように水冷銅管
を巻回したソレノイドコイルＣの内側を走行させて、全
体を誘導加熱することが行なわれている。特に鉄鋼用熱
間圧延ラインでは、搬送ローラ２、２の配列ピッチが決
められており、このローラ２、２の間にソレノイドコイ
ルＣを配置するためコイル長が制限される。2. Description of the Related Art Generally, when a plate-shaped metal material (material to be heated) 1 is continuously induction-heated, it is run inside a solenoid coil C around which a water-cooled copper tube is wound as shown in FIG. Induction heating is performed. Particularly in the hot rolling line for steel, the arrangement pitch of the transport rollers 2 and 2 is determined, and the coil length is limited because the solenoid coil C is arranged between the rollers 2 and 2.
【０００３】この決められたコイル長で最大の電力を印
加して、短時間に加熱し,一定昇温量を確保するため、
通常は図６に示すように、複数に分割したコイルＣ1 、
Ｃ2 、Ｃ2 、Ｃ1 を並列に接続し、各コイルＣ1 、Ｃ
2 、Ｃ2 、Ｃ1 に印加される電圧を３０００Ｖ程度に抑
えて、全体で大きな電力を印加するようにしている。ま
た誘導加熱装置の周囲には、磁性の構造物があり、磁束
の影響を与えないようにすると共に、電力密度を最大に
するために、図５に示すように開口部が長円形状をなす
ソレノイドコイルＣの上下に、その軸方向に沿って複数
本の帰磁路鉄心３…が設けられている。In order to secure a constant amount of temperature rise by applying maximum power with this determined coil length and heating in a short time,
Usually, as shown in FIG. 6, a plurality of divided coils C 1 ,
C 2 , C 2 and C 1 are connected in parallel, and each coil C 1 and C
The voltage applied to 2 , C 2 and C 1 is suppressed to about 3000 V so that a large amount of power is applied as a whole. Further, there is a magnetic structure around the induction heating device, and in order to prevent the influence of magnetic flux and maximize the power density, the opening has an elliptical shape as shown in FIG. A plurality of return path cores 3 ... Are provided above and below the solenoid coil C along the axial direction thereof.
【０００４】この場合、図６に示すように端部側のコイ
ルＣ1 、Ｃ1 と内側のコイルＣ2 、Ｃ 2 の巻数をＮ1 、
Ｎ2 、コイル電流Ｉ1 、Ｉ2 とし、巻数をＮ1 ＝Ｎ2 と
同数にした場合、コイル電流はＩ1 ＞Ｉ2 となる。Ｎ1
＝Ｎ2 ＝４ターンとした場合の実測した結果では、Ｉ1
＝１．４〜２．０Ｉ2 となり、端部側のコイルＣ1 に流
れる電流が大幅に増加していた。これは端部側のコイル
Ｃ1 では、図７に示すように磁束５が帰磁路鉄心３に戻
ろうとするため、端部側のコイルＣ1 のインダクタンス
Ｌ1 が内側のコイルＣ2 のインダクタンスＬ2 より小さ
くなり、端部側のコイルＣ1 に電流が流れ易くなるため
である。In this case, as shown in FIG. 6, the carp on the end side is
Le C1 , C1 And the inner coil C2 , C 2 The number of turns of N1 ,
N2 , Coil current I1 , I2 And the number of turns is N1 = N2 When
If the number is the same, the coil current is I1 > I2 Becomes N1
= N2 = 4 turns, the measured result is I1
= 1.4-2.0I2 And the coil C on the end side1 Flow
The current that was supplied was greatly increased. This is the end coil
C1 Then, as shown in Fig. 7, the magnetic flux 5 returns to the return path core 3.
To try, coil C on the end side1 Inductance of
L1 Is the inner coil C2 Inductance L2 Less than
Coil C on the end side1 Current easily flows through
Is.
【０００５】このように端部側のコイルＣ1 に大電流が
流れると、コイル電流Ｉ1 によるジュール損Ｉ2 Ｒに加
えて、磁束５がコイルＣ1 の銅管を鎖交して発生するう
ず電流損とが発生して、コイルが局部的に加熱され、損
失が大きくなる問題がある。コイルの設計は、銅管の内
部を流れる冷却水の温度を６０℃程度に抑えられるよう
に、冷却水量やコイル形状を設定している。When a large current flows through the coil C 1 on the end side as described above, in addition to the Joule loss I 2 R due to the coil current I 1 , a magnetic flux 5 is generated by interlinking the copper tubes of the coil C 1. There is a problem that eddy current loss occurs and the coil is locally heated, resulting in a large loss. The coil design sets the amount of cooling water and the shape of the coil so that the temperature of the cooling water flowing inside the copper tube can be suppressed to about 60 ° C.
【０００６】しかしながら、前述のように端部側のコイ
ルＣ1 が局部的に加熱されると、最大加熱温度に合わせ
てコイルの許容電流値が決められるため、印加電力が制
限される問題があり、短いコイルで最大の電力を供給す
るという要請を達成することができなかった。However, as described above, when the coil C 1 on the end side is locally heated, the allowable current value of the coil is determined according to the maximum heating temperature, so that the applied power is limited. , The requirement to deliver maximum power with short coils could not be achieved.
【０００７】このため図８に示すように、端部側のコイ
ルＣ1 の巻数Ｎ1 を内側のコイルＣ2の巻数Ｎ2 より多
くしてインピーダンスを大きくし、電流を流れにくくし
て全体の電流バランスを取る構造も実施されている。こ
れはコイル長が長く、巻数も多く、印加電力が小さい場
合には比較的バランスが取れて局部加熱を少なくするこ
とができる。Therefore, as shown in FIG. 8, the number of turns N 1 of the coil C 1 on the end side is made larger than the number of turns N 2 of the coil C 2 on the inner side to increase the impedance, thereby making it difficult for a current to flow, and thus reducing the total number of turns. A structure for balancing the current is also implemented. This has a long coil length, a large number of turns, and when the applied power is small, it is relatively balanced and local heating can be reduced.
【０００８】しかしながら、コイル長が短く、巻数が少
ない場合には、コイルに大電力を印加すると電流バラン
スが取れない場合があることが実験の結果から判明し
た。例えば、端部側のコイルＣ1 の巻数Ｎ1 を５ター
ン、内側のコイルＣ2 の巻数Ｎ2 を３ターンにして大電
力を印加すると、コイル電流はＩ1 ＝０．１Ｉ2 とな
り、内側のコイルＣ2 に比べて１０分の１程度の電流し
か流れず、加熱効率も４０％程度に大幅に低下する問題
が生じた。However, when the coil length is short and the number of turns is small, it has been found from the results of experiments that the current balance may not be achieved when a large amount of power is applied to the coil. For example, the number of turns N 1 and 5 turns of coils C 1 end side and then the inside of the turns N 2 of the coil C 2 to 3 turns to apply a large electric power, the coil current I 1 = 0.1I 2, and the inner As compared with the coil C 2 , the current flows only about one-tenth, and the heating efficiency is significantly reduced to about 40%.
【０００９】また逆に端部側のコイルＣ1 の巻数Ｎ1 を
３ターン、内側のコイルＣ2 の巻数Ｎ 2 を４ターンにす
ると、Ｉ1 ＝０．６Ｉ2 となった。更に端部側のコイル
Ｃ1 の巻数Ｎ1 を４ターン、内側のコイルＣ2 の巻数Ｎ
2 を５ターンにすると、Ｉ1 ＝０．５Ｉ2 となり、コイ
ル全体として電流バランスが悪く、局部加熱を生じて、
加熱効率が悪くなった。つまり端部側と内側のコイルＣ
1 、Ｃ2 の巻数Ｎ1 、Ｎ 2 の組合わせを種々変更して検
討しても、電流が不均一になりバランスを取ることがで
きなかった。On the contrary, the coil C on the end side1 Number of turns N1 To
3 turns, inner coil C2 Number of turns N 2 Turn 4 turns
Then I1 = 0.6I2 Became. Further coil on the end side
C1 Number of turns N1 4 turns, inner coil C2 Number of turns N
2 5 turns, I1 = 0.5I2 Next, carp
The current balance is poor as a whole, causing local heating,
The heating efficiency has deteriorated. That is, the coil C on the end side and the inner side
1 , C2 Number of turns N1 , N 2 Change the combination of
Even if you argue, the current will be non-uniform and you can balance it.
Didn't come
【００１０】[0010]
【発明が解決しようとする課題】本発明は上記問題点に
鑑みなされたもので、複数に分割して並列に接続したコ
イルの電流バランスをとって、コイルの局部加熱を抑え
て、コイル冷却水量を少なくすると共に、電流損失を少
なくして加熱効率を向上させ、短いコイル長さで最大印
化電力を増大させた誘導加熱装置を提供するものであ
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and balances the currents of coils divided into a plurality of parts and connected in parallel to suppress local heating of the coils and to reduce the amount of coil cooling water. The present invention provides an induction heating device in which the current loss is reduced and the heating efficiency is improved to increase the maximum printing power with a short coil length.
【００１１】[0011]
【課題を解決するための手段】本発明の請求項１記載の
誘導加熱装置は、ソレノイドコイルを複数に分割して並
列に接続し、これらコイルの内側を通過する被加熱材を
誘導加熱する誘導加熱装置において、開口部となる端部
側のコイルをＣ1 とし、これに隣接する内側のコイルＣ
2 として、端部側のコイルＣ1を、巻数がＮ11≦Ｎ12の
２個のコイルＣ11、Ｃ12に分離して直列に接続し、この
分離したコイルＣ12を、前記内側のコイルＣ2 に隣接す
る中央側に配置したことを特徴とするものである。An induction heating apparatus according to claim 1 of the present invention is an induction heating apparatus in which a plurality of solenoid coils are divided and connected in parallel, and a material to be heated which passes through the inside of these coils is induction-heated. In the heating device, the coil on the end side to be the opening is defined as C 1, and the inner coil C adjacent to this is defined as C 1.
2 , the end side coil C 1 is separated into two coils C 11 and C 12 having the number of turns N 11 ≦ N 12 and connected in series, and the separated coil C 12 is connected to the inner coil. It is characterized by being arranged on the center side adjacent to C 2 .
【００１２】また本発明の請求項２記載の誘導加熱装置
は、ソレノイドコイルが４個以上、複数個に分割され、
分割された各コイルの巻数が等しいことを特徴とするも
のである。In the induction heating device according to the second aspect of the present invention, the solenoid coil is divided into four or more and a plurality of solenoid coils.
The number of turns of each divided coil is equal.
【００１３】更に本発明の請求項３記載の誘導加熱装置
は、ソレノイドコイルを６個以上に分割して並列に接続
し、これらコイルの内側を通過する被加熱材を誘導加熱
する誘導加熱装置において、開口部となる端部側のコイ
ルをＣ1 とし、これに順次隣接する内側のコイルＣ2 、
Ｃ3 として、端部側のコイルＣ1 を、巻数がＮ11≦Ｎ12
の２個のコイルＣ11、Ｃ12に分離して直列に接続し、こ
の分離したコイルＣ12を、前記内側のコイルＣ3 に隣接
する中央側に配置したことを特徴とするものである。Further, the induction heating device according to claim 3 of the present invention is an induction heating device in which six or more solenoid coils are divided and connected in parallel, and the material to be heated passing through the inside of these coils is induction-heated. , The coil on the side of the end that becomes the opening is C 1, and the inner coil C 2 that is sequentially adjacent to the coil is C 1 .
As C 3 , the coil C 1 on the end side has a number of turns of N 11 ≦ N 12
The two coils C 11 and C 12 are separated and connected in series, and the separated coil C 12 is arranged on the center side adjacent to the inner coil C 3 .
【００１４】[0014]
【発明の実施の形態】以下本発明の実施の一形態を図１
を参照して詳細に説明する。図１は誘導加熱装置に設け
られたソレノイドコイルＣの結線状態を示すもので、開
口部が長円形状をなすソレノイドコイルＣを４個に分割
し、この分割された端部側のコイルＣ1、Ｃ1 と、内側
のコイルＣ2 、Ｃ2 は交流電源４に並列に接続されてい
る。これら各コイルＣ1 、Ｃ2 の巻数Ｎ1 、Ｎ2 は例え
ば４ターンの同数とする。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
Will be described in detail with reference to. FIG. 1 shows the connection state of the solenoid coil C provided in the induction heating device. The solenoid coil C having an elliptical opening is divided into four, and the divided end side coil C 1 , C 1 and the inner coils C 2 , C 2 are connected in parallel to the AC power supply 4. It turns N 1 of the coils C 1, C 2, N 2 is the same number of example 4 turns.
【００１５】端部側のコイルＣ1 を、２個のコイル
Ｃ11、Ｃ12に分離して直列に接続し、一方のコイルＣ11
の巻数Ｎ11を１ターン、他方のコイルＣ12の巻数Ｎ12を
３ターンになるように分離する。この巻数Ｎ12が３ター
ンのコイルＣ12を、巻数Ｎ2 が４ターンの内側コイルＣ
2 に隣接する中央側に配置したものである。The coil C 1 on the end side is separated into two coils C 11 and C 12 , which are connected in series, and one coil C 11 is connected.
The number of turns N 11 is divided into 1 turn, and the number of turns N 12 of the other coil C 12 is divided into 3 turns. The number of turns N 12 is 3 turns of the coil C 12 , and the number of turns N 2 is 4 turns of the inner coil C 12.
It is located on the center side adjacent to 2 .
【００１６】この誘導加熱装置について、コイル電流Ｉ
1 、Ｉ2 を測定したところ、２個のコイルＣ11 、Ｃ12
に分離した端部側コイルＣ1 のコイル電流Ｉ1 は、内側
のコイルＣ2 のコイル電流Ｉ2 に対してＩ1 ＝０．８３
Ｉ2 となった。また加熱効率は７４％と、大幅に改善さ
れた。For this induction heating device, the coil current I
When 1 and I 2 were measured, two coils C 11 and C 12
The coil current I 1 of the end side coil C 1 separated into 2 is I 1 = 0.83 with respect to the coil current I 2 of the inner coil C 2.
It became I 2 . The heating efficiency was 74%, which was a great improvement.
【００１７】この理由については十分に解析されていな
いが、並列接続されたコイルの端部側のコイルＣ1 を、
巻数がＮ11≦Ｎ12の２個のコイルＣ11、Ｃ12に分離して
直列に接続し、この分離したコイルＣ12を、前記内側の
コイルＣ2 に隣接する中央側に配置することにより、電
流バランスを取ることができ、逆に分離した２個のコイ
ルＣ11、Ｃ12の巻数をＮ11＞Ｎ12とした場合には電流バ
ランスを取ることができない。Although the reason for this has not been sufficiently analyzed, the coil C 1 on the end side of the coils connected in parallel is
By separating the two coils C 11 and C 12 having the number of turns N 11 ≦ N 12 and connecting them in series, and arranging the separated coil C 12 on the center side adjacent to the inner coil C 2. , The current can be balanced, and conversely, the current cannot be balanced when the number of turns of the two separated coils C 11 and C 12 is N 11 > N 12 .
【００１８】図２は本発明の他の実施の形態を示すもの
で、開口部が長円形状をなすソレノイドコイルを６個に
分割し、この分割された端部側のコイルＣ1 、Ｃ1 と、
内側のコイルＣ2 、Ｃ2 、Ｃ3 、Ｃ3 は交流電源４に並
列に接続されている。これら各コイルＣ1 、Ｃ2 、Ｃ3
の巻数は例えば３ターンの同数とする。端部側のコイル
Ｃ1 を、２個のコイルＣ11、Ｃ12に分離して直列に接続
し、コイルＣ11の巻数Ｎ 11を１ターン、コイルＣ12の巻
数Ｎ12を２ターンになるように分離する。この巻数Ｎ12
が２ターンのコイルＣ12を、内側のコイルＣ2 に隣接す
る中央側に配置したものである。この場合、端部側コイ
ルＣ1 のコイル電流Ｉ1 は、内側のコイルＣ2 のコイル
電流Ｉ2 に対してＩ1＝０．８１Ｉ2 となった。FIG. 2 shows another embodiment of the present invention.
Then, the number of solenoid coils whose openings are oval is changed to 6
The coil C on the end side is divided.1 , C1 When,
Inner coil C2 , C2 , C3 , C3 Is the same as AC power supply 4
Connected to the column. Each of these coils C1 , C2 , C3
The number of turns of is, for example, the same number of 3 turns. Coil on the end side
C1 2 coils C11, C12Separated and connected in series
And coil C11Number of turns N 111 turn, coil C12Winding
Number N12Are separated into 2 turns. Number of turns N12
Is a two-turn coil C12The inner coil C2 Adjacent to
It is located on the center side. In this case, the end carp
Le C1 Coil current of1 Is the inner coil C2 Coil of
Current I2 Against I1= 0.81I2 Became.
【００１９】また本発明では、端部側のコイルＣ1 と内
側のコイルＣ2 の巻数Ｎ1 、Ｎ2 を６ターンの同数と
し、端部側コイルＣ1 の、分離したコイルＣ11の巻数Ｎ
11を２ターン、コイルＣ12の巻数Ｎ12を４ターンとした
場合や、コイルＣ11の巻数Ｎ11を１ターン、コイルＣ12
の巻数Ｎ12を５ターンとした場合でも良い。[0019] In the present invention, the number of turns N 1, N 2 of the end side coil C 1 and the inner coil C 2 and the same number of 6 turns end side coil C 1, the number of turns of the coil C 11 isolated N
11 2 turns, or when the number of turns N 12 of the coil C 12 and 4 turns, number of turns N 11 one turn of the coil C 11, coil C 12
The number N 12 of turns may be 5 turns.
【００２０】またコイルＣ1 、Ｃ2 の巻数は同数の場合
に限らず、図３に示すように、端部側のコイルＣ1 の巻
数Ｎ1 を例えば４ターンとし、内側のコイルＣ2 の巻数
Ｎ2 を３ターンとし、端部側のコイルＣ1 を分離したコ
イルＣ11の巻数Ｎ12を１ターンに、中央側に分離したコ
イルＣ12の巻数Ｎ12を３ターンとしたものでも良い。The number of turns of the coils C 1 and C 2 is not limited to the same number. As shown in FIG. 3, the number of turns N 1 of the coil C 1 on the end side is, for example, 4 turns, and the number of turns of the inner coil C 2 is The number of turns N 2 may be set to 3 turns, the number of turns N 12 of the coil C 11 separated from the end side coil C 1 may be set to 1 turn, and the number of turns N 12 of the coil C 12 separated to the center side may be set to 3 turns. .
【００２１】なお上記説明ではソレノイドコイルを４個
または６個に分割した場合について示したが、４個以
上、複数個に分割したものでも良く、５個のように奇数
個に分割しても良い。また上記説明では各コイルの巻き
方向が同一の場合について示したが、隣接するコイルの
巻き方向を逆向きにした構造でも良い。In the above explanation, the case where the solenoid coil is divided into four or six pieces is shown, but it may be divided into four or more pieces or plural pieces, or may be divided into an odd number such as five pieces. . Further, in the above description, the case where the winding directions of the respective coils are the same has been described, but a structure in which the winding directions of the adjacent coils are reversed may be used.
【００２２】図４は本発明の他の実施の形態を示すもの
で、開口部が長円形状をなすソレノイドコイルＣを６個
に分割し、この分割されたコイルは端部側からコイルＣ
1 、Ｃ 2 、Ｃ3 とし、この分割された各コイルＣ1 、Ｃ
2 、Ｃ3 は交流電源４に並列に接続されている。これら
各コイルＣ1 、Ｃ2 、Ｃ3 の巻数は例えば３ターンの同
数とする。FIG. 4 shows another embodiment of the present invention.
Then, 6 solenoid coils C whose openings are oval
The divided coil is divided into coil C from the end side.
1 , C 2 , C3 And each divided coil C1 , C
2 , C3 Are connected in parallel to the AC power supply 4. these
Each coil C1 , C2 , C3 The number of turns is, for example, 3 turns
Let it be a number.
【００２３】端部側のコイルＣ1 は、２個のコイル
Ｃ11、Ｃ12に分離されて直列に接続され、一方のコイル
Ｃ11の巻数Ｎ11を１ターン、他方のコイルＣ12の巻数Ｎ
12を２ターンになるように分離する。この巻数Ｎ12が２
ターンのコイルＣ12を、内側のコイルＣ3 に隣接する中
央側に配置したものである。The coil C 1 end side, two are separated into the coil C 11, C 12 are connected in series, the number of turns N 11 of one coil C 11 1-turn, the number of turns of the other coil C 12 N
Divide 12 into 2 turns. The number of turns N 12 is 2
The turn coil C 12 is arranged on the center side adjacent to the inner coil C 3 .
【００２４】なお上記説明では金属板を連続的に加熱す
る場合について説明したが、丸棒や角棒などの棒材や、
パイプの誘導加熱にも適用することができる。この場
合、ソレノイドコイルは断面形状が円形や角形のものを
用いる。In the above description, the case where the metal plate is continuously heated has been described. However, a bar material such as a round bar or a square bar,
It can also be applied to induction heating of pipes. In this case, a solenoid coil having a circular or rectangular cross section is used.
【００２５】[0025]
【発明の効果】以上説明した如く本発明に係る請求項１
記載の誘導加熱装置によれば、並列接続されたコイルの
端部側のコイルＣ1 を、巻数がＮ11≦Ｎ12の２個のコイ
ルＣ11、Ｃ12に分離して直列に接続し、この分離したコ
イルＣ12を、前記内側のコイルＣ 2 に隣接する中央側に
配置することにより、各コイルの電流バランスをとっ
て、コイルの局部加熱を抑え、コイル冷却水量や電流損
失を少なくして加熱効率を向上させ、短いコイル長で最
大印化電力を増大させることができる。As described above, claim 1 according to the present invention
According to the described induction heating device, the coils connected in parallel are
Coil C on the end side1 The number of turns is N11≦ N12Two carp
Le C11, C12Separated and connected in series.
IL C12Is the inner coil C 2 On the center side adjacent to
By arranging them, balance the current of each coil.
The local heating of the coil is suppressed, and the coil cooling water amount and current loss are reduced.
Loss to improve heating efficiency, and short coil length maximizes
Greater printing power can be increased.
【００２６】また請求項２記載の誘導加熱装置によれ
ば、ソレノイドコイルが４個以上、複数個に分割され、
分割された各コイルの巻数を等しくすることにより更に
電流バランスを取って局部加熱を抑えることができる。According to the induction heating device of the second aspect, the solenoid coil is divided into a plurality of four or more solenoid coils.
By making the number of turns of each divided coil equal, it is possible to further balance the current and suppress local heating.
【００２７】また請求項３記載の誘導加熱装置によれ
ば、ソレノイドコイルを６個以上、複数個に分割し、端
部側のコイルＣ1 を、巻数がＮ11≦Ｎ12の２個のコイル
Ｃ11、Ｃ 12に分離して直列に接続し、この分離したコイ
ルＣ12を、内側のコイルＣ3 に隣接する中央側に配置す
ることにより、各コイルの電流バランスを取ることがで
きる。According to the induction heating device of claim 3,
For example, divide the solenoid coil into 6 or more,
Part side coil C1 The number of turns is N11≦ N12Two coils of
C11, C 12Separated and connected in series.
Le C12The inner coil C3 Placed on the center side adjacent to
By doing so, it is possible to balance the current of each coil.
Wear.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の実施の一形態による誘導加熱装置のコ
イル接続状態を示す結線図である。FIG. 1 is a connection diagram showing a coil connection state of an induction heating device according to an embodiment of the present invention.
【図２】本発明の他の実施の形態による誘導加熱装置の
コイル接続状態を示す結線図である。FIG. 2 is a connection diagram showing a coil connection state of an induction heating device according to another embodiment of the present invention.
【図３】本発明の異なる他の実施の形態による誘導加熱
装置のコイル接続状態を示す結線図である。FIG. 3 is a connection diagram showing a coil connection state of an induction heating device according to another embodiment of the present invention.
【図４】本発明の異なる他の実施の形態による誘導加熱
装置のコイル接続状態を示す結線図である。FIG. 4 is a connection diagram showing a coil connection state of an induction heating device according to another embodiment of the present invention.
【図５】従来の誘導加熱装置の概略構成を示す説明図で
ある。FIG. 5 is an explanatory diagram showing a schematic configuration of a conventional induction heating device.
【図６】従来の誘導加熱装置のコイル接続状態を示す結
線図である。FIG. 6 is a connection diagram showing a coil connection state of a conventional induction heating device.
【図７】帰磁路鉄心を設けたソレノイドコイルの磁束の
流れを示す説明図である。FIG. 7 is an explanatory diagram showing a flow of magnetic flux of a solenoid coil provided with a return path core.
【図８】従来の誘導加熱装置のコイル接続状態を示す結
線図である。FIG. 8 is a connection diagram showing a coil connection state of a conventional induction heating device.
１ 金属材料（被加熱材） ２ 搬送ローラ ３ 帰磁路鉄心 ４ 電源 ５ 磁束 Ｃ ソレノイドコイル Ｃ1 端部側のコイル Ｃ2 内側のコイル Ｃ3 内側のコイル1 Metal Material (Material to be Heated) 2 Conveyor Roller 3 Return Path Iron Core 4 Power Supply 5 Magnetic Flux C Solenoid Coil C 1 End Coil C 2 Inner Coil C 3 Inner Coil
───────────────────────────────────────────────────── フロントページの続き (72)発明者 園部 学 福島県福島市松川町字天王原９番地 北芝 電機株式会社内 (72)発明者 土斐崎 哲嗣 東京都港区三田３丁目13番16号東芝ジーイ ー・オートメーションシステムズ株式会社 内 Ｆターム(参考） 3K059 AA08 AD07 AD34 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Sonobe 9 Shiba, Tennohara, Matsukawa-cho, Fukushima City, Fukushima Prefecture Electric Co., Ltd. (72) Inventor Tetsuji Dohizaki 3-13-16 Mita, Minato-ku, Tokyo Toshiba GH Automation Systems Co., Ltd. Within F-term (reference) 3K059 AA08 AD07 AD34
Claims (3)
接続し、これらコイルの内側を通過する被加熱材を誘導
加熱する誘導加熱装置において、開口部となる端部側の
コイルをＣ1 とし、これに隣接する内側のコイルＣ2 と
して、端部側のコイルＣ1 を、巻数がＮ11≦Ｎ12の２個
のコイルＣ11、Ｃ12に分離して直列に接続し、この分離
したコイルＣ12を、前記内側のコイルＣ2 に隣接する中
央側に配置したことを特徴とする誘導加熱装置。1. An induction heating apparatus for dividing a solenoid coil into a plurality of parts and connecting them in parallel and inductively heating a material to be heated which passes through the inside of these coils, wherein an end side coil which is an opening is C 1. , As the inner coil C 2 adjacent to this, the end side coil C 1 is separated into two coils C 11 and C 12 having a number of turns of N 11 ≦ N 12 and connected in series, and separated. The induction heating device is characterized in that the coil C 12 is arranged on the center side adjacent to the inner coil C 2 .
割され、分割された各コイルの巻数が等しいことを特徴
とする請求項１記載の誘導加熱装置。2. The induction heating device according to claim 1, wherein the solenoid coil is divided into a plurality of four or more, and the number of turns of each divided coil is equal.
列に接続し、これらコイルの内側を通過する被加熱材を
誘導加熱する誘導加熱装置において、開口部となる端部
側のコイルをＣ1 とし、これに順次隣接する内側のコイ
ルＣ2 、Ｃ3 として、端部側のコイルＣ1 を、巻数がＮ
11≦Ｎ12の２個のコイルＣ11、Ｃ12に分離して直列に接
続し、この分離したコイルＣ12を、前記内側のコイルＣ
3 に隣接する中央側に配置したことを特徴とする誘導加
熱装置。3. An induction heating apparatus for dividing a solenoid coil into six or more and connecting them in parallel, and inductively heating a material to be heated which passes through the inside of these coils. 1 and the inner side coils C 2 and C 3 that are sequentially adjacent to the end side coil C 1 have the number of turns N.
Two coils C 11 and C 12 of 11 ≦ N 12 are separated and connected in series, and the separated coil C 12 is connected to the inner coil C 12.
An induction heating device characterized by being arranged on the center side adjacent to 3 .
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| Application Number | Priority Date | Filing Date | Title |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09219287A (en) * | 1996-02-07 | 1997-08-19 | Kitashiba Denki Kk | Induction heating device |
| JP2001035647A (en) * | 1999-07-21 | 2001-02-09 | Mitsubishi Electric Corp | Induction heater |
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- 2001-09-28 JP JP2001299096A patent/JP4548997B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09219287A (en) * | 1996-02-07 | 1997-08-19 | Kitashiba Denki Kk | Induction heating device |
| JP2001035647A (en) * | 1999-07-21 | 2001-02-09 | Mitsubishi Electric Corp | Induction heater |
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| JP4548997B2 (en) | 2010-09-22 |
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