JPH02207478A

JPH02207478A - High frequency heating device by use of current in resonance circuit

Info

Publication number: JPH02207478A
Application number: JP2584789A
Authority: JP
Inventors: Kazuo Tsumura; 津村　和夫
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-02-06
Filing date: 1989-02-06
Publication date: 1990-08-17

Abstract

PURPOSE:To quickly heat up a low resistant material by means of a simple device by inserting a material to be heated up into a part of the resonance circuit for high frequency current, and thereby heating the material by the loss incurred at the section owing to high amperage current flowing in the resonance circuit. CONSTITUTION:When high frequency voltage is applied from a high frequency power supply 1 to the resonance circuit composed of an inductance L and a capacity C in order to be applied to a L and C circuit 5, current will be minimum at time when flowing current is tuned to the applied frequency so that current flowing to an inductive coil 4 will be Q times as much as original one. Owing to the value Q=C/R determined by the constant of the aforesaid closed circuit, when Q is large, high amperage current in the closed circuit will be maximum. The closed circuit is made to be a heating device with a cooling effect, which is formed out of a cooling water inlet port 8, a cooling water outlet port 9, pressure contact terminals 5 and a rubber hose 7. A heating member 6 is arranged between the terminals 5 of the device so that quick heating is thereby effected by high amperage current in the closed circuit by means of a simple heating device.

Description

【発明の詳細な説明】（産業上の利用分野）この発明は金属材料を加熱して色々な加工、熱処理等を
行なう場合に用いる加熱装置にかんするものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heating device used for heating metal materials to perform various processing, heat treatment, etc.

（従来の技術）金属を加熱して焼入、焼戻し等の熱処理をほどこす方法
として高周波誘導加熱に依るもの或は直接通電方法等が
ある。何れも表面加熱を主たる目標としたものである。(Prior Art) As a method of heating metal to perform heat treatments such as quenching and tempering, there are methods that rely on high-frequency induction heating, direct energization methods, and the like. In both cases, the main goal is surface heating.

加熱すべき材料が鋼材、アルミ材等の電気抵抗の小さい
金属の場合は上記の方法では加熱することか不可能であ
る。If the material to be heated is a metal with low electrical resistance, such as steel or aluminum, it is impossible to heat it using the above method.

（問題点を解決するための手段）本発明は第１図に示す様ζニインダクタンスＬとキャパ
シティＣの共振回路に高周波電源１より高周波電圧を加
えるとり、Ｃ，閉回路５に流れる電流は回路が供給周波
数に同調した時最大となり、４を流れる電流のＱ倍に達
する。ここにＱは閉回路の常数によって定、まる値でＱ
＝ωＣ／Ｒである。ω＝２πｆでｆは電源の周波数、Ｃ
はキャパシティ凡は回路の抵抗である。(Means for Solving the Problems) The present invention, as shown in FIG. It reaches a maximum when the circuit is tuned to the supply frequency, reaching Q times the current flowing through 4. Here, Q is fixed by the constant of the closed circuit, and the total value is Q
=ωC/R. ω=2πf, f is the frequency of the power supply, C
is the capacity and is the resistance of the circuit.

Ｑが大きい場合は非常に大きな電流が流れるこの大電流
を利用することに依って発熱の効果を上げる様にしたも
のである。When Q is large, a very large current flows, and by utilizing this large current, the heat generation effect is increased.

即ち上記共振回路の１部に所望の材料、例えば線材、版
材等を挿入すれば、たとえ抵抗は小さくても大電流：二
よって溶解するまで高温に加熱することが出来る。挿入
される材料以外の共振回路は水冷して温度の上昇を防ぐ
。That is, if a desired material, such as a wire or a plate material, is inserted into a portion of the resonant circuit, even if the resistance is small, it can be heated to a high temperature until melted by a large current. Resonant circuits other than the material to be inserted are water-cooled to prevent temperature rise.

（実施例）第２図に実施例を示す１は数１００　ｋｃの高周波電源で２は出力変成器であ
る。其の二次側はインダスタンス４とキャパシティ３で
共振回路を作る。(Embodiment) An embodiment is shown in FIG. 2. Reference numeral 1 indicates a high frequency power source of several hundred kc, and numeral 2 indicates an output transformer. Its secondary side creates a resonant circuit with an inductance of 4 and a capacitance of 3.

其の１部に加熱せんとする材料６を挿入するこの閉回路
が共振した時最大の電流が流れ、材料６は加熱される。When this closed circuit into which the material 6 to be heated is inserted resonates, maximum current flows and the material 6 is heated.

５は材料と回路との圧接端子であまり温度が上がらない
様冷却効果を充分にする。圧接部分では多少温度は下が
るが少し離れると温度が充分保持出来る。5 is a press-contact terminal between the material and the circuit, and the cooling effect is sufficient so that the temperature does not rise too much. The temperature will drop somewhat at the press-contact part, but if it is separated a little, the temperature can be maintained sufficiently.

共振回路は水冷却する。８は冷却水の入口、９は出口で
ある。The resonant circuit is water cooled. 8 is a cooling water inlet, and 9 is an outlet.

７は加熱材部分のバイパスのための冷却水、ゴムホース
である。7 is a cooling water and rubber hose for bypassing the heating material portion.

（発明の効果）この方法で低い抵抗の銅、アルミ等の材料を小さな装置
で瞬間に、急速加熱することが出来るので工業用として
の利用価値の大きい加熱装置である。(Effects of the Invention) With this method, materials such as copper and aluminum with low resistance can be instantly and rapidly heated with a small device, so this heating device has great utility value for industrial use.

【図面の簡単な説明】２、・・・・・・キャパシティＣ３、・・川・インダスタンスＬ第２図１、・・・・・・高周波電源２、・・・・・・変成器３、・・・・・・コンデンサー４、・・・・・・インダクタンスコイル５、・・・・・
・圧接端子６、・・・・・・加熱材７、・・・・・・ゴムホース８、・・・・・・冷却水人口９、・・・・・・冷却水出口[Brief explanation of the drawings] 2. Capacity C 3. River/industance L Fig. 2 1. High frequency power supply 2. Transformer 3, ... Capacitor 4, ... Inductance coil 5, ...
- Pressure contact terminal 6, ... Heating material 7, ... Rubber hose 8, ... Cooling water population 9, ... Cooling water outlet

Claims

[Claims]

A heating device in which a material to be heated is inserted into a part of a resonant circuit for high-frequency current, and the large current flowing through the resonant circuit causes loss in that part and heats it.