JPS59125091U

JPS59125091U - induction heating device

Info

Publication number: JPS59125091U
Application number: JP1966583U
Authority: JP
Inventors: 堀　克彦; 田淵　正英
Original assignee: 北芝電機株式会社; 株式会社東芝
Priority date: 1983-02-14
Filing date: 1983-02-14
Publication date: 1984-08-23

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の温度加熱装置を示す回路図、第２図は従
来装置による定温度加熱制御の正常な温度変化と電力変
化を示すグラフ、第３図は従来装置による０Ｎ−ＯＦＦ
制御の正常な温度変化と電力変化を示すグラフ、第４図
は定温度制御時における温度検出に異常があった場合の
温度変化と電力変化を示すグラフ、第５図は本考案の一
実施例による誘導加熱装置の回路図、第６図はこの考案
による　　定温度制御時の温度変化と電力変化を示すグ
ラフである。１・・・交流電源、２・・・加熱コイル、３・・・被加
熱材、４・・・温度検出器、５・・・変換器、６・・・
保持温度設定器、７・・・制御器、８・・・電力検出器
、９・・・制御器、１０・・・保持電力上限設定器、１
１・・・タイマー、１２・・・補正装置、Ｓ・・・昇温
運転、Ｈ・・・保持運転。第４図Fig. 1 is a circuit diagram showing a conventional temperature heating device, Fig. 2 is a graph showing normal temperature changes and power changes in constant temperature heating control by the conventional device, and Fig. 3 is an ON-OFF control diagram by the conventional device.
A graph showing normal temperature changes and power changes during control. Figure 4 is a graph showing temperature changes and power changes when there is an abnormality in temperature detection during constant temperature control. Figure 5 is an example of the present invention. Figure 6 is a circuit diagram of an induction heating device according to this invention, and is a graph showing temperature changes and power changes during constant temperature control according to this invention. DESCRIPTION OF SYMBOLS 1... AC power supply, 2... Heating coil, 3... Heated material, 4... Temperature detector, 5... Converter, 6...
Holding temperature setter, 7... Controller, 8... Power detector, 9... Controller, 10... Holding power upper limit setter, 1
1... Timer, 12... Correction device, S... Temperature raising operation, H... Holding operation. Figure 4

Claims

[Scope of utility model registration request]

(1) An AC power source, a heating coil connected to this, a temperature detection mechanism that detects the temperature of the heated material inserted into this heating coil, and an amount of electric power applied to the coil from the AC power source based on this detection signal. In an induction heating device comprising a temperature control mechanism that controls a temperature control mechanism, a timer that operates according to the elapse of a holding time, a holding power detection device, a holding power upper limit setting device,
゛It is characterized by comprising a controller that compares the holding power after the timer operation with the holding power upper limit setting value and adjusting the output of the AC power supply so that the holding power does not exceed the holding power upper limit setting value. Induction heating device.

(2) The induction heating device is equipped with a correction device connected to the temperature detection mechanism in place of the timer, holding power detection device, holding power upper limit setting device, and controller, and after a certain period of time has elapsed, the temperature detection value is changed over time. The induction heating device according to claim 1, wherein the induction heating device is characterized in that the correction is made to be high at the same time.