JPS6220492U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案誘導加熱調理器の回路ブロツク
図、第２図は本考案誘導加熱調理器の温度制御状
態を示す動作波形図、第３図は従来の誘導加熱調
理器の温度制御状態を示す動作波形図である。 １……全波整流回路、２……誘導加熱コイル、
３……共振コンデンサ、４……スイツチングトラ
ンジスタ、６……調理具、７……天板、８……サ
ーミスタ、９，１２……定抵抗、１０……第１の
温度設定手段、１３……メモリ回路、１４……制
御回路、１５……駆動回路。 Fig. 1 is a circuit block diagram of the induction heating cooker of the present invention, Fig. 2 is an operation waveform diagram showing the temperature control state of the induction heating cooker of the present invention, and Fig. 3 is a diagram showing the temperature control state of the conventional induction heating cooker. FIG. 1...Full wave rectifier circuit, 2...Induction heating coil,
3... Resonance capacitor, 4... Switching transistor, 6... Cooking utensil, 7... Top plate, 8... Thermistor, 9, 12... Constant resistance, 10... First temperature setting means, 13... ...Memory circuit, 14...Control circuit, 15...Drive circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 直流電源に結ばれた加熱コイルと、この加熱コ
イルとともに共振回路を構成する共振コンデンサ
と、上記共振回路に共振電流を生成するためのス
イツチング素子とから成り、このスイツチング素
子をＯＮ，ＯＦＦ制御することにより加熱コイル
に高周波電流を発生させ、加熱コイルで高周波交
番磁界を生成し、この加熱コイルに天板を介して
近接配置される調理具を誘導加熱する誘導加熱調
理器において、天板裏面に設けられ上記調理具の
温度を検出する温度検出手段と調理具の加熱温度
を設定する第１の温度設定手段と、上記第１の温
度設定手段での設定温度より低い所定の温度を設
定する第２の温度設定手段と、この第２の温度設
定手段と、上記温度検出手段の検出温度が、第２
の温度設定手段での設定温度に達したとき、スイ
ツチング素子のスイツチング動作を禁止するとと
もに一定時間遅延後上記スイツチング動作を再開
し、検出温度が第１の温度設定手段での設定温度
に達したとき検出温度がその温度に保たれるよう
に制御する制御手段と、からなる誘導加熱調理器
。 It consists of a heating coil connected to a DC power source, a resonant capacitor that forms a resonant circuit together with the heating coil, and a switching element for generating a resonant current in the resonant circuit, and controlling the switching element to turn on and off. In an induction heating cooker that generates a high-frequency current in the heating coil, the heating coil generates a high-frequency alternating magnetic field, and the cooking utensils placed close to the heating coil through the top plate are heated by induction. a first temperature setting means for setting a heating temperature of the cooking utensil; and a second temperature setting means for setting a predetermined temperature lower than the set temperature in the first temperature setting means. temperature setting means, this second temperature setting means, and the temperature detected by the temperature detecting means are the second temperature setting means.
When the temperature set by the first temperature setting means is reached, the switching operation of the switching element is prohibited, and the switching operation is resumed after a certain time delay, and when the detected temperature reaches the temperature set by the first temperature setting means. An induction heating cooker comprising: control means for controlling the detected temperature to be maintained at that temperature.