JPS60180088A - Electromagnetic induction cooking device - Google Patents
Electromagnetic induction cooking deviceInfo
- Publication number
- JPS60180088A JPS60180088A JP3490684A JP3490684A JPS60180088A JP S60180088 A JPS60180088 A JP S60180088A JP 3490684 A JP3490684 A JP 3490684A JP 3490684 A JP3490684 A JP 3490684A JP S60180088 A JPS60180088 A JP S60180088A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- input terminal
- inverter circuit
- potential
- arithmetic comparator
- 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.)
- Granted
Links
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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 (イ)産業上の利用分野 本発明は、電磁誘導調理器に関する。[Detailed description of the invention] (b) Industrial application fields The present invention relates to an electromagnetic induction cooker.
(ロ)従来技術
従来の電磁誘導調理器のインバータ回路は、特開昭57
−165992号公報において示されている如く一度ト
リガー信号を入力されると発振を開始し、其の後はイン
バータ回路の発振状態を発振検出回路が検出し自励発振
回路がインバータ回路を自励発振させて(・る。(b) Prior art The inverter circuit of a conventional electromagnetic induction cooker was published in Japanese Patent Application Laid-Open No. 57
As shown in Publication No. 165992, once a trigger signal is input, oscillation starts, and after that, the oscillation detection circuit detects the oscillation state of the inverter circuit, and the self-excited oscillation circuit causes the inverter circuit to self-excited oscillation. Let me do it.
しかし、インバータ回路の発振と起動のためのトリガー
信号は非同期故にインバータ回路のスイッチング素子が
オフ状態のとぎ、トリガー信号が入力されると鍋等の負
荷から異常音が発生したりスイッチング素子が破壊する
おそれがあるので、起動回路を停止するような回路が必
要であり、全体回路が複雑となり価格的にも高価なもの
となっていた。However, since the trigger signal for oscillation and startup of the inverter circuit is asynchronous, the switching element of the inverter circuit is in the OFF state, and when the trigger signal is input, abnormal noise may be generated from the load such as a pot or the switching element may be destroyed. Therefore, a circuit for stopping the starting circuit is required, making the entire circuit complex and expensive.
(ハ) 目的
本発明は、上述の欠点を除去すべ(為されたものである
。(C) Objective The present invention is intended to eliminate the above-mentioned drawbacks.
に)構成
本発明は、演算比較器側の正側入力端子を半波整流用ダ
イオード賭を介して交流電源(1)の半波整流交流電圧
Vc cの入力端子とし、負側入力端子を定電圧VD、
、の入力端子とし、演算比較器(151の出力端子から
所定時間毎に所定幅のパルスを発生させ、演算比較器(
19の出力端子にコンデンサ(21+ 、抵抗(221
より成る微分回路(ハ)を接続し、−分回路困を演算比
較器(至)の負側入力端子に接続し、・演算比較器(財
)の正側入力端子をインバータ回路(5)の平滑用コン
デンサa@に接続し、演算比較器(財)の正側入力端子
爪
における電位波形をクリップさせる定ヘダイオード(5
)を該正側入力端子に接続して成る。2) Structure In the present invention, the positive input terminal on the arithmetic comparator side is used as the input terminal for the half-wave rectified AC voltage Vcc of the AC power supply (1) via the half-wave rectifying diode, and the negative input terminal is used as the input terminal for the half-wave rectified AC voltage Vcc of the AC power supply (1). Voltage VD,
, a pulse of a predetermined width is generated from the output terminal of the arithmetic comparator (151) at predetermined time intervals, and the arithmetic comparator (151)
Connect a capacitor (21+) and a resistor (221+) to the output terminal of 19.
Connect the differentiating circuit (c) consisting of the following, and connect the negative side input terminal of the arithmetic comparator (to) to the negative side input terminal of the arithmetic comparator (to), and connect the positive side input terminal of the arithmetic comparator (to) to the inverter circuit (5). A constant diode (5) connected to the smoothing capacitor a@, clips the potential waveform at the positive input terminal of the arithmetic comparator.
) is connected to the positive input terminal.
(ホ)実施例
本発明一実施例を図面に基づき説明する。第1図は、本
発明による電磁誘導調理器の一実施例で、(1)は交流
電源、(2)はトランス、(3)は整流回路、(4)は
定電圧回路、(5)はインバータ回路、(6)は駆動回
路、(7)は出力調節回路、(8)は起動回路である。(E) Embodiment An embodiment of the present invention will be explained based on the drawings. FIG. 1 shows an embodiment of the electromagnetic induction cooker according to the present invention, in which (1) is an AC power supply, (2) is a transformer, (3) is a rectifier circuit, (4) is a constant voltage circuit, and (5) is a In the inverter circuit, (6) is a drive circuit, (7) is an output adjustment circuit, and (8) is a starting circuit.
インバータ回路(5)は既知のものなので詳述すること
は避けるが、チョークトランス(9)、平滑用コンデン
サαe、加熱コイル(lυ、共振用コンデンサ(L2)
、ダンパーダイオードQ3)、スイッチングトラ791
50句より成る。Since the inverter circuit (5) is already known, we will not discuss it in detail, but it includes a choke transformer (9), a smoothing capacitor αe, a heating coil (lυ), and a resonance capacitor (L2).
, damper diode Q3), switching transistor 791
It consists of 50 verses.
起動回路(8)の構成は次の如くである。演算比較器0
9の正側入力端子を抵抗(16)(17)の接続点に接
続し、これらの抵抗(16)(lηの入力として半波整
流用ダイオード賭な介してトランス(2)に接続し、負
側入力端子を抵抗(19(2(IIの接続点に接続し、
これらの抵抗(1■翰の入力として定電圧回路(4)に
接続する。演算比較器Q5)の出力端子Cをコンデンサ
(21)、抵抗(2渇より成る微分回路器に接続する。The configuration of the starting circuit (8) is as follows. Arithmetic comparator 0
The positive input terminal of 9 is connected to the connection point of resistors (16) and (17), and connected to the transformer (2) via a half-wave rectifier diode as the input of these resistors (16) (lη). Connect the side input terminal to the connection point of resistor (19(2(II),
The output terminal C of these resistors (connected as inputs to the constant voltage circuit (4), arithmetic comparator Q5) is connected to a differentiating circuit consisting of a capacitor (21) and a resistor (2).
演算比較器(財)の負側入力端子dを微分回路(ハ)に
−接続し、正側入力端子を抵抗C2■c26)の接続点
eに接続し、抵抗+25)(26)の入力としてインバ
ータ回路(5)のf点に接続する。尚、(5)は定電圧
ダイオード、(281は抵抗である。Connect the negative input terminal d of the arithmetic comparator (goods) to the differential circuit (c), connect the positive input terminal to the connection point e of the resistor C2 (c26), and use it as an input to the resistor +25) (26). Connect to point f of the inverter circuit (5). Note that (5) is a constant voltage diode, and (281 is a resistor).
上記構成の本発明の動作を第2図のタイミングチャート
に基づき説明する。演算比較器(151の正側入力端子
aにおける電位は半波整流ダイオードa〜によって半波
整流されて第2図(1)イの如く、負側入力端子すにお
ける電位は同図口の如くであり、演算比較器の出力端子
Cにおける電位は第2図(2)の如(になる。The operation of the present invention having the above configuration will be explained based on the timing chart of FIG. The potential at the positive input terminal a of the arithmetic comparator (151) is half-wave rectified by the half-wave rectifier diodes a, as shown in Figure 2 (1) A, and the potential at the negative input terminal A is as shown in the figure. Therefore, the potential at the output terminal C of the arithmetic comparator becomes as shown in FIG. 2 (2).
演算比較器αωの出力端子Cにおける電位がLレベルの
とぎ、微分回路(ハ)のコンデンサ(21)は抵抗(2
a。When the potential at the output terminal C of the arithmetic comparator αω is at the L level, the capacitor (21) of the differentiating circuit (c) is connected to the resistor (2
a.
演算比較器(151を通して定電源電圧V□まで充電さ
れており、演算比較器(151の正側入力端子aにおけ
る電位が負側入力端子すにおける電位より高くなると出
力端子Cから出力信号が出されるが出力端子Cにおける
電位は定電源電圧VDDまで上昇する。It is charged to a constant power supply voltage V□ through the arithmetic comparator (151), and when the potential at the positive input terminal a of the arithmetic comparator (151) becomes higher than the potential at the negative input terminal A, an output signal is output from the output terminal C. However, the potential at output terminal C rises to constant power supply voltage VDD.
従って、演算比較器(24)の負側入力端子dにおける
電位は第2図(3)イの如く瞬時に立ち上がる。しかし
、演算比較器α5)の出力端子Cにおける電位がHレベ
ルになっていることにより、コンデンサeυ抵抗(2a
(281による閉回路が形成され、コンデンサ(2I)
の充電々荷は抵抗(22)(2aを通して放電され演算
比較器(24)の負側入力端子dにおける電位は瞬時に
定電源電圧vl、nまで下降する。Therefore, the potential at the negative input terminal d of the arithmetic comparator (24) rises instantaneously as shown in FIG. 2(3)A. However, since the potential at the output terminal C of the arithmetic comparator α5) is at H level, the capacitor eυ resistance (2a
(A closed circuit is formed by 281, and the capacitor (2I)
The charge is discharged through the resistor (22) (2a), and the potential at the negative input terminal d of the arithmetic comparator (24) instantly drops to the constant power supply voltage vl,n.
次に、演算比較器時の正側入力端子aにおける電位が負
側入力端子すにおける電位より低くなると演算比較器α
9の出力端子Cにおける電位はLレベルになる。演算比
較器a9の出力端子Cにおける電位がLレベルになると
、抵抗(2z、コンデンサ(21J、演算比較器(15
1の接地側へと充電々流が流れ、演算比較器(24)の
負側入力端子dにおける電位は、コンデンサ(2υの充
電々荷は零であるので、演算比較器Q粉の接地側へ接地
されたの゛と・等しくなり、第2図(3)イに示されて
いる如く瞬時に下降するが、直ぐに定電源電圧■DDま
で上昇する。このようにして、微分回路@は交流電源(
1)の半波ごとにトリガ波を演算比較器04)の負側入
力端子に印加する。Next, when the potential at the positive input terminal a of the arithmetic comparator becomes lower than the potential at the negative input terminal a, the arithmetic comparator α
The potential at output terminal C of No. 9 becomes L level. When the potential at the output terminal C of the arithmetic comparator a9 becomes L level, the resistor (2z), the capacitor (21J), and the arithmetic comparator (15
A charging current flows to the ground side of the arithmetic comparator (24), and the potential at the negative input terminal d of the arithmetic comparator (24) flows to the grounding side of the arithmetic comparator (Q), since the electrical charge of the capacitor (2υ) is zero. It becomes equal to the grounded voltage, and drops instantly as shown in Figure 2 (3) A, but immediately rises to the constant power supply voltage DD.In this way, the differentiator circuit @ is connected to the AC power supply. (
A trigger wave is applied to the negative input terminal of the arithmetic comparator 04) every half wave of 1).
−3方、演算比較器(財)の正側入力端子eにおける電
位について次に述べる。インバータ回路(5)のf点に
おける電位は、インバータ回路(5)が発振をしている
とぎは第2図(5)に示す如く、平滑コンデンサ(10
)によって平滑されることなく変化するが、インバータ
回路(5)が発振を停止しているとぎは、平滑コンデン
サ00)によって平滑される。このようなインバータ回
路(5)のf点の電位は、演算比較器(24)の正側入
力端子eにおいては定電圧ダイオード(2′0によって
クリップされ第2図(3)口の如くになる。-3, the potential at the positive input terminal e of the arithmetic comparator will be described next. The potential at point f of the inverter circuit (5) is as shown in Figure 2 (5) when the inverter circuit (5) is oscillating.
), but when the inverter circuit (5) stops oscillating, it is smoothed by the smoothing capacitor (00). The potential at point f of the inverter circuit (5) is clipped by the constant voltage diode (2'0) at the positive input terminal e of the arithmetic comparator (24), as shown in Figure 2 (3). .
従って、演算比較器(財)の正側入力端子eにおける電
位が負側入力端子dにおける電位より高くなったとぎに
演算比較器(24)かも第2図(4)に示されている如
き起動パルスが出される。Therefore, as soon as the potential at the positive input terminal e of the arithmetic comparator becomes higher than the potential at the negative input terminal d, the arithmetic comparator (24) is activated as shown in FIG. 2 (4). A pulse is emitted.
即ち、インバータ回路(5)が発振をしているときは起
動回路(8)から起動パルスは出されず、発振を停止し
ている状態においてのみ起動パルスが出される。That is, when the inverter circuit (5) is oscillating, the starting pulse is not issued from the starting circuit (8), but only when the oscillation is stopped.
(へ)効果
本発明においては、以上の如くインバータ回路(5)が
発振をしているとぎは、起動回路(8)から起動パルス
が出されず、インバータ回路(5)が発振を停止してい
る状態においてのみ起動パルスが発せられるが、インバ
ータ回路(5)の発振状態を交流電源(1)の平滑コン
デンサ叫による平滑度で検出しているので、従来の如く
特別に発振検知回路を必要とせず、全体回路が簡単なも
のとなっている。(F) Effect In the present invention, as described above, when the inverter circuit (5) is oscillating, the starting pulse is not issued from the starting circuit (8) and the inverter circuit (5) stops oscillating. However, since the oscillation state of the inverter circuit (5) is detected by the smoothness of the smoothing capacitor of the AC power supply (1), there is no need for a special oscillation detection circuit like in the past. First, the entire circuit is simple.
第1図は、本発明による電磁誘導調理器の全体回路図、
第2図は本発明のタイミングチャートである。
<1)・・・交流電源、 (5)・・・インバータ回路
、 (8)・・・起動回路。
出願人 三洋電機株式会社 外1名
代理人 弁理士 佐 野 靜 夫FIG. 1 is an overall circuit diagram of an electromagnetic induction cooker according to the present invention;
FIG. 2 is a timing chart of the present invention. <1)...AC power supply, (5)...inverter circuit, (8)...starting circuit. Applicant: Sanyo Electric Co., Ltd. and 1 other representative: Patent attorney: Shizuo Sano
Claims (1)
ンデンサ、ダンパーダイオード、トランジスタ、共振用
コンデンサ、加熱コイルで形成し、該インバータ回路が
発振動作時、或いは停止時を前記平滑コンデンサによる
前記交流電源波形の平滑度で検出することにより、起動
回路からの起動パルスを前記インバータ回路が発振動作
停止時に発することを特徴とする電磁誘導調理器。(1) An inverter circuit is formed of a smoothing capacitor, a damper diode, a transistor, a resonant capacitor, and a heating coil for smoothing the AC power waveform, and when the inverter circuit is in oscillation operation or stopped, the AC power waveform is determined by the smoothing capacitor. An electromagnetic induction cooking device characterized in that a starting pulse is emitted from a starting circuit when the inverter circuit stops oscillating operation by detecting a smoothness of .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3490684A JPS60180088A (en) | 1984-02-24 | 1984-02-24 | Electromagnetic induction cooking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3490684A JPS60180088A (en) | 1984-02-24 | 1984-02-24 | Electromagnetic induction cooking device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60180088A true JPS60180088A (en) | 1985-09-13 |
JPH0329147B2 JPH0329147B2 (en) | 1991-04-23 |
Family
ID=12427232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3490684A Granted JPS60180088A (en) | 1984-02-24 | 1984-02-24 | Electromagnetic induction cooking device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60180088A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57118392A (en) * | 1981-01-12 | 1982-07-23 | Sanyo Electric Co | Induction heating cooking device |
-
1984
- 1984-02-24 JP JP3490684A patent/JPS60180088A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57118392A (en) * | 1981-01-12 | 1982-07-23 | Sanyo Electric Co | Induction heating cooking device |
Also Published As
Publication number | Publication date |
---|---|
JPH0329147B2 (en) | 1991-04-23 |
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