JPH01260783A - Induction heating cooker - Google Patents
Induction heating cookerInfo
- Publication number
- JPH01260783A JPH01260783A JP8748388A JP8748388A JPH01260783A JP H01260783 A JPH01260783 A JP H01260783A JP 8748388 A JP8748388 A JP 8748388A JP 8748388 A JP8748388 A JP 8748388A JP H01260783 A JPH01260783 A JP H01260783A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- control circuit
- circuit
- power supply
- current
- 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
- 238000010438 heat treatment Methods 0.000 title claims description 29
- 230000006698 induction Effects 0.000 title claims description 27
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 abstract description 7
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000005056 cell body Anatomy 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 241000252233 Cyprinus carpio Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はＤＣモータにより冷却を行う冷却装置を備えた
誘導加熱調理器に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an induction heating cooker equipped with a cooling device that performs cooling using a DC motor.
従来の技術
従来のこの種の誘導加熱調理器は、第６図に示すように
、制御回路６ｏと冷却ファンを回転させるＤＣモータ４
９を電源回路４８の出力に電気的に並列に接続すること
により、ＤＣモータに流れる電流を一定にし、冷却ファ
ンの回転数を一定に保って良好な冷却を行っていた。2. Description of the Related Art A conventional induction heating cooker of this type includes a control circuit 6o and a DC motor 4 for rotating a cooling fan, as shown in FIG.
9 is electrically connected in parallel to the output of the power supply circuit 48, the current flowing through the DC motor is kept constant, and the rotational speed of the cooling fan is kept constant, thereby achieving good cooling.
なお、５１は商用交流電源、６２は交流を直流に変換す
る電力変換回路、５３は加熱コイ／７５４を含むインバ
ータ回路である。Note that 51 is a commercial AC power supply, 62 is a power conversion circuit that converts AC to DC, and 53 is an inverter circuit including a heating coil/754.
また、第７図に示すように、制御回路５０とＤＣモータ
４９を電源回路４８の出力に電気的に直列に接続してい
るものもあり、制御回路６０にはＤＣモータ４９に流れ
る電流を一定に制御する機能を有していなかった。Furthermore, as shown in FIG. 7, there is a system in which the control circuit 50 and the DC motor 49 are electrically connected in series with the output of the power supply circuit 48, and the control circuit 60 has a control circuit 60 that controls the current flowing through the DC motor 49 at a constant level. It had no control function.
発明が解決しようとする課題
従来の制御回路６０とＤＣモータ４９が電源回路４８の
出力に電気的に並列に接続されている誘導加熱調理器に
あっては、電源回路４８の出力容量が増え、コストが高
くなるという課題と、その電源回路４８形状も大きくな
るという課題があつた。Problems to be Solved by the Invention In the conventional induction heating cooker in which the control circuit 60 and the DC motor 49 are electrically connected in parallel to the output of the power supply circuit 48, the output capacity of the power supply circuit 48 increases, There were problems that the cost would be high and that the shape of the power supply circuit 48 would also be large.
また、制御回路５０とＤＣモータ４９が電源回路４８の
出力に電気的に直列に接続されているが、制御回路５ｏ
にはＤＣモータ４９に流れる電流を一定に制御する機能
を持たないものについては、前述の問題は無いが、誘導
加熱調理器のパワーコントロールでパワーを変えるとＤ
Ｃモータ４９の回転数が変わり、冷却能力が変わるとい
う課題と、ＤＣモータ４９の回転によシ発生している音
の音色と大きさが変化し違和感を感じるという課題があ
った。音の課題については、誘導加熱調理器に鍋を載置
しない場合の現象であるインバータの間欠発振状態でも
顕著に発生する。Further, although the control circuit 50 and the DC motor 49 are electrically connected in series to the output of the power supply circuit 48, the control circuit 5o
For those that do not have a function to control the current flowing to the DC motor 49 at a constant level, there is no problem mentioned above, but if you change the power with the power control of the induction heating cooker, D
There were two problems: the rotational speed of the C motor 49 changed and the cooling capacity changed, and the other problem was that the timbre and volume of the sound generated by the rotation of the DC motor 49 changed, giving a sense of discomfort. The issue of noise also occurs noticeably when the inverter oscillates intermittently, a phenomenon that occurs when no pot is placed on the induction heating cooker.
本発明は、コストをできるだけかけずに、電源回路の形
状もそのままの大きさで、パワーコントロールと間欠発
振により発生するＤＣモータの回転数変化による不快音
をなくすことを目的としている。The present invention aims to eliminate unpleasant noise caused by changes in the rotational speed of a DC motor caused by power control and intermittent oscillation, while keeping costs as low as possible and keeping the size of the power supply circuit as it is.
課題を解決するための手段
上記目的を達成するために、本発明の誘導加熱調理器は
、制御回路とＤＣモータを電源回路の出力に電気的に直
列に接続する構成とし、かつ制御回路がＤＣモータに流
れる電流を一定に制御する機能を設けているものである
。Means for Solving the Problems In order to achieve the above object, the induction heating cooker of the present invention has a configuration in which a control circuit and a DC motor are electrically connected in series to the output of a power supply circuit, and the control circuit is connected to a DC motor. It is equipped with a function to control the current flowing through the motor to a constant level.
作 用 この技術的手段による作用は次のようになる。For production The effect of this technical means is as follows.
すなわち、制御回路とＤＣモータを電源回路の出力に電
気的に直列に接続することにより、ＤＣモータに流す電
流として制御回路で消費する電流を流用するため、電源
回路の出力容量は制御回路とＤＣモータを電源回路の出
力に電気的に並列に接続する場合に比べ大きくせずに済
み、電源回路のコスト・形状共大きくせずに済む。また
、制御回路がＤＣモータに流れる電流を一定に制御する
機能を備えているため、たとえば、パワーコントロール
により誘導加熱調理器の出力を「強」（仮に１２００Ｗ
）から「弱」（仮に３００Ｗ）に変えた時、制御回路の
消費電流、つまシ、ＤＣモータに流れる電流が減少した
としても、制御回路がこの電流の減少を検知し、制御回
路の消費電流を元の値まですばやく増やし、ＤＣモータ
に流れる電流は一定に保たれ、冷却ファンの回転数は一
定に保たれ、回転数の変化による不快音は発生しなくな
シ、違和感は惑しない。In other words, by electrically connecting the control circuit and the DC motor in series with the output of the power supply circuit, the current consumed by the control circuit is used as the current flowing to the DC motor, so the output capacity of the power supply circuit is equal to that of the control circuit and the DC motor. Compared to the case where the motor is electrically connected in parallel to the output of the power supply circuit, it does not need to be large, and the cost and shape of the power supply circuit do not need to be increased. In addition, since the control circuit has a function to keep the current flowing through the DC motor constant, for example, the power control can be used to set the output of the induction heating cooker to "strong" (temporarily 1200W).
) to "weak" (temporarily 300W), even if the current consumption of the control circuit, the current flowing to the knob, and the DC motor decreases, the control circuit detects this decrease in current and reduces the current consumption of the control circuit. is quickly increased to its original value, the current flowing to the DC motor is kept constant, the rotation speed of the cooling fan is kept constant, and unpleasant noises due to changes in rotation speed are no longer generated, so there is no discomfort.
実施例
以下、本発明の実施例について図面を参照して説明する
。第１図に本発明の一実施例における誘導加熱調理器の
回路構成を示す。第１図において、１は電源回路、２は
ＤＣモータ、３は制御回路、４は制御回路３に含まれる
ＤＣモータ電流制御回路であシ、電源回路１による直流
電源はＤＣモータ２に供給され、さらにＤＣモータ２と
電気的に直列に接続されている制御回路３に供給される
。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a circuit configuration of an induction heating cooker according to an embodiment of the present invention. In FIG. 1, 1 is a power supply circuit, 2 is a DC motor, 3 is a control circuit, and 4 is a DC motor current control circuit included in the control circuit 3. DC power from the power supply circuit 1 is supplied to the DC motor 2. , further supplied to a control circuit 3 electrically connected in series with the DC motor 2.
また、６は商用交流電源、６は商用交流電源６を直流に
変換する電力順変換回路、７はインバータ回路で、制御
回路３によシ制御される。８はインバータ回路７に含ま
れる加熱コイルである。また、１１ はＤＣモータ２に
流れる電流で制御回路３の、消費電流と同じである。Further, 6 is a commercial AC power source, 6 is a power forward conversion circuit for converting the commercial AC power source 6 into DC, and 7 is an inverter circuit, which is controlled by the control circuit 3. 8 is a heating coil included in the inverter circuit 7. Further, 11 is a current flowing through the DC motor 2 and is the same as the current consumption of the control circuit 3.
次に第２図を参照しながら本発明の一実施例における動
作を説明する。第２図には、第１図で示した誘導加熱調
理器のＤＣモータ電流制御回路９と制御回路３の一部で
あるキー人力部１ｏである。Next, the operation of one embodiment of the present invention will be explained with reference to FIG. FIG. 2 shows the DC motor current control circuit 9 of the induction heating cooker shown in FIG. 1 and a key human power section 1o which is a part of the control circuit 3.
キー人力部１ｏの回路は、従来よシよく使われている回
路であり、若干説明する。マイコン４ｏの出力ポートＰ
ＯＯおよびＰｏ１．トランジスタ１８．１７および抵抗
１９〜２２よシはヌキャンパルを発生する回路を構成し
ている。２３〜２８はキースイッチ、２９〜３４はキー
マトリックヌのまわりこみ電流阻止用のダイオード、３
６〜３７は雑防用コンデンサである。The circuit of the key power unit 1o is a circuit that has been commonly used in the past, and will be briefly explained. Output port P of microcomputer 4o
OO and Po1. Transistors 18 and 17 and resistors 19 to 22 constitute a circuit for generating a null signal. 23 to 28 are key switches, 29 to 34 are diodes for blocking current flowing around the key matrix, 3
6 to 37 are noise prevention capacitors.
次に動作を説明する。最初の状態として、「加熱」スイ
ッチ２３が押され、続いて「強」スイッチ２４が押され
誘導加熱調理器が消費電力１２００Ｗで動作し、制御回
路３の消費電流、つまりＤＣモータ２の電流１１は１５
０ ｍＡ流れているとする。このとき、マイコン４０は
出力ポートＰ３０とＰ３１にＬ（約ｏＶ）を出力し、ト
ランジスタ１１とトランジスタ１２をオフさせている。Next, the operation will be explained. In the initial state, the "heat" switch 23 is pressed, followed by the "strong" switch 24, and the induction heating cooker operates with a power consumption of 1200 W, and the current consumption of the control circuit 3, that is, the current of the DC motor 2 11 is 15
Assume that 0 mA is flowing. At this time, the microcomputer 40 outputs L (approximately oV) to the output ports P30 and P31, turning off the transistors 11 and 12.
次に「中」スイッチ２５が押され、誘導加熱調理器の消
費電力がｓｏｏｗになり、制御回路３の消費電流、つま
りＤＣモータ２の電流１１が１００ ｍＡに減少した場
合、マイコン４ｏは出力ポートＰｓ。Next, when the "medium" switch 25 is pressed and the power consumption of the induction heating cooker becomes soow, and the current consumption of the control circuit 3, that is, the current 11 of the DC motor 2, decreases to 100 mA, the microcomputer 4o Ps.
にＨ（オープン）、Ｐ３１にＬをそれぞれ出力し、トラ
ンジスタ１１をオン、トランジスタ１２をオフし、抵抗
１３の定数を１２が５０ ｍＡとなるようにあらかじめ
決めておけば制御回路３の消費電流１１は瞬時に１５０
ｍＡに戻シ、ＤＣモータに流れる電流１１ は１５０
ｍＡ一定に保たれ、冷却ファンの回転数は一定に保たれ
る。同様に「弱」スイッチ２６が押され、誘導加熱調理
器の消費電力が３００Ｗになり、１１ が１１０ｍＡに
なったとする（従来のＤＣモータ電流制御回路４のない
誘導加熱調理器では、この場合の１１ は（１１０ｍＡ
−ｉ２）＝（１１ｏｍＡ−ｓｏｍＡ）＝６ｏｍＡとなり
、冷却ファンの回転数は誘導加熱調理器の消費電力が１
２００Ｗの時に比べかなり減少する。）。この場合には
、マイコン４ｏは出カポ−）ＰｓｏとＰ３１の両方にＨ
を出力し、トランジスタ１１とトランジスタ１２の両方
をオンし、抵抗１４の定数をｉ３が４０ ｍＡになるよ
うにあらかじめ決めておけば、この場合も制御回路３の
消費電流１１は瞬時に１６０ｍＡに戻シ、ＤＣモータ２
に流れる電流１１は１ｓｏｍＡ一定に保たれ、冷却ファ
ンの回転数は一定に保たれる。また、この状態から「強
」スイッチ２４が押され誘導加熱調理器が消費電力が１
２００Ｗに戻った場合には、マイコン４ｏはＰ２ＯとＰ
３１の両方にＬを出力し、トランジスタ１１とトランジ
スタ１２をオフし、１２ （！： ｉｓは０となり、制
御回路３の消費電流１１は１５０ｍＡとなり、ＤＣモー
タに流れる電流１１ は１５０ｍＡ一定に保たれ、冷却
ファンの回転数は一定に保たれる。By outputting H (open) to P31 and L to P31, turning on transistor 11 and turning off transistor 12, and predetermining the constant of resistor 13 so that 12 is 50 mA, the current consumption 11 of control circuit 3 can be reduced. instantly becomes 150
Returning to mA, the current 11 flowing through the DC motor is 150
mA is kept constant, and the rotation speed of the cooling fan is kept constant. Similarly, assume that the "weak" switch 26 is pressed and the power consumption of the induction heating cooker becomes 300W and 11 becomes 110mA (in the conventional induction heating cooker without the DC motor current control circuit 4, 11 is (110mA
-i2) = (11omA - somA) = 6omA, and the rotation speed of the cooling fan is the power consumption of the induction heating cooker.
This is considerably reduced compared to when it was 200W. ). In this case, the microcomputer 4o sends H to both the output port (Pso) and P31.
If you output , turn on both transistors 11 and 12, and set the constant of resistor 14 so that i3 is 40 mA, the current consumption 11 of control circuit 3 will instantly return to 160 mA in this case as well. , DC motor 2
The current 11 flowing through the cooling fan is kept constant at 1 somA, and the rotation speed of the cooling fan is kept constant. Also, from this state, the "strong" switch 24 is pressed and the induction heating cooker reduces the power consumption to 1.
When the power returns to 200W, the microcontroller 4o will switch between P2O and P
31, transistors 11 and 12 are turned off, 12 (!: is becomes 0, the current consumption 11 of the control circuit 3 becomes 150 mA, and the current 11 flowing to the DC motor is kept constant at 150 mA. , the rotation speed of the cooling fan is kept constant.
次に第３図を参照しながら本発明の他の実施例を説明す
る。５は等制約に制御回路３の総抵抗を示したもので、
６は三端子ボルテージレギュレータであり、三端子ボル
テージレギュレータ６の入力端子からＧＮＤ端子に流れ
る電流は１．に比べ通常無視できるレベルであるので、
本説明でも無視してＤＣモータ２に流れる電流１１は三
端子ボルテージレギュレータの入力から出力へそのまま
通り抜は制御回路３に流れるものとする。Next, another embodiment of the present invention will be described with reference to FIG. 5 shows the total resistance of the control circuit 3 under the equality constraint,
6 is a three-terminal voltage regulator, and the current flowing from the input terminal of the three-terminal voltage regulator 6 to the GND terminal is 1. Since it is usually at a negligible level compared to
In this explanation, it is also assumed that the current 11 flowing through the DC motor 2 passes directly from the input to the output of the three-terminal voltage regulator and then flows to the control circuit 3.
たとえば、誘導加熱調理器の消費電力が１２ｏＯＷで、
１１ が１５０ｍＡの時、パワーコントロールによシ誘
導加熱調理器の消費電力を変えた場合や誘導加熱調理器
が間欠発振している場合に、１１を１５０ｍＡ一定に制
御する場合について説明する。For example, the power consumption of an induction heating cooker is 12oOW.
11 is 150 mA, the case where the power consumption of the induction heating cooker is changed by power control or the induction heating cooker is intermittently oscillating, and the case where 11 is controlled to be constant at 150 mA will be explained.
まず、誘導加熱調理器の消費電力が１２００Ｗで１１が
１５０ｍＡである時、オペアンプ４４の反転入力端子の
電圧Ｖ が（ｖ １−１１−１５Ｏ抵抗４１）となるよ
うに半固定抵抗４３を調整し、オペアンプ４４の非反転
入力端子の電圧ｖ３を設定しておく。いま誘導加熱調理
器の消費電力をパワーコントロールによシ１２００Ｗか
らｅｏｏＷに下げて１１が減少した場合、次のようにし
て１１ は一定に保たれる。First, when the power consumption of the induction heating cooker is 1200W and 11 is 150mA, adjust the semi-fixed resistor 43 so that the voltage V at the inverting input terminal of the operational amplifier 44 becomes (v1-11-15O resistor 41). , the voltage v3 of the non-inverting input terminal of the operational amplifier 44 is set. If the power consumption of the induction heating cooker is lowered from 1200W to eooW by power control and 11 decreases, 11 will be kept constant as follows.
１１が減少→ｖ２が増加→オペアンプ４４の出力が負（
０）→ｉ４が流れるー１１が増加しｖ２が減少し、ｉ
が１ｓｏｍＡになった時ｖ２＝ｖ３となシＤＣモータ電
流制御回路４の動作は安定する。11 decreases → v2 increases → the output of the operational amplifier 44 becomes negative (
0) → i4 flows -11 increases, v2 decreases, i
When becomes 1somA, v2=v3, and the operation of the DC motor current control circuit 4 becomes stable.
逆に、パワーコントロールによシ誘導加熱調理器の消費
電力をｅｏｏｗから１２００Ｗに上げて１１が増加した
場合は、上記説明の逆の動作で１１が１５０ｍＡになる
ようにＤＣモータ電流制御回路４が働く。Conversely, if power control increases the power consumption of the induction cooking device from eoow to 1200W and 11 increases, the DC motor current control circuit 4 changes so that 11 becomes 150 mA by performing the reverse operation of the above explanation. work.
また、誘導加熱調理器が間欠発振している場合もＤＣモ
ータ電流制御回路４は上記説明と同様に１１を１５０
ｍＡに保つように働く。Also, when the induction heating cooker is intermittently oscillating, the DC motor current control circuit 4 changes 11 to 150 in the same manner as described above.
Works to maintain mA.
上記実施例ではＤＣモータ２に流れる電流を１５０ｍＡ
に制御する場合を示したが、１００ｍＡに制御する場合
は第４図に示すようにＤＣモータ２と並列にｉ５がｓｏ
ｍＡとなるような抵抗４６を接続すればよく、また、Ｄ
Ｃモータ２に流れる電流を２００ｍＡに制御する場合は
第５図に示すように１６が５０ ｍＡとなるような抵抗
４７を接続すればよい。In the above embodiment, the current flowing through the DC motor 2 is 150 mA.
However, when controlling to 100 mA, as shown in Fig. 4, i5 is connected in parallel with the DC motor 2.
It suffices to connect a resistor 46 such that D
In order to control the current flowing through the C motor 2 to 200 mA, it is sufficient to connect a resistor 47 such that 16 becomes 50 mA as shown in FIG.
発明の効果
以上、実施例から明らかなように、本発明は、以下に記
載されるような効果を奏すと。Effects of the Invention As is clear from the Examples, the present invention has the following effects.
ＤＣモータと制御回路が電源回路に直列につながれてい
る構成で、かつ、制御回路がＤＣモータに流れる電流を
一定に制御する機能を有しているため、電源回路の容量
を増加させることがなく、電源回路の形状も大きくし々
〈てすむ。しかも、冷却ファンの回転数をパワコン時や
間欠発振時に一定に保って、冷却ファンの冷却能力を一
定に保つことができ、冷却ファンの回転数変化による不
快音をなくすことができる。The DC motor and control circuit are connected in series to the power supply circuit, and the control circuit has the function of controlling the current flowing to the DC motor at a constant level, so there is no need to increase the capacity of the power supply circuit. However, the shape of the power supply circuit also tends to be large. In addition, by keeping the rotation speed of the cooling fan constant during power conditioning or intermittent oscillation, the cooling capacity of the cooling fan can be kept constant, and unpleasant noises caused by changes in the rotation speed of the cooling fan can be eliminated.
第１図は本発明の一実施例における誘導加熱調理器のブ
ロック図、第２図は同誘導加熱調理器のＤＣモータ電流
制御回路の回路図、第３図、第４図、第５図は他の実施
例におけるＤＣモータ電流制御回路の回路図、第６図、
第７図は従来の技術における誘導加熱調理器のブロック
図である。
１・・・・・・電源回路、２・・・・・・ＤＣモータ、
３・・・・・・制御回路、４・・・・・・ＤＣモータ電
流制御回路、５・・・・・・商用交流電源、６・・・・
・・電力変換回路、７・・・・・・インバータ回路、８
・・・・・・加熱コイ／Ｌ／。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名ＩＩ
図
６− 電力変換回路
第２図
第３図
第４図
第５図
第６図Fig. 1 is a block diagram of an induction heating cooker according to an embodiment of the present invention, Fig. 2 is a circuit diagram of a DC motor current control circuit of the induction heating cooker, and Figs. 3, 4, and 5 are A circuit diagram of a DC motor current control circuit in another embodiment, FIG.
FIG. 7 is a block diagram of a conventional induction heating cooker. 1...Power supply circuit, 2...DC motor,
3... Control circuit, 4... DC motor current control circuit, 5... Commercial AC power supply, 6...
...Power conversion circuit, 7...Inverter circuit, 8
...Heating carp /L/. Name of agent: Patent attorney Toshio Nakao and one other person II
Figure 6 - Power conversion circuit Figure 2 Figure 3 Figure 4 Figure 5 Figure 6
Claims (1)
変換回路の出力側に接続されるインバータ回路と、この
インバータ回路を制御する制御回路と、この制御回路に
電力供給を行う電源回路と、前記制御回路等を冷却する
冷却ファンを回転させるＤＣモータを有し、前記制御回
路と前記ＤＣモータは前記電源回路の出力に電気的に直
列に接続された構成で、かつ、前記制御回路は前記ＤＣ
モータに流れる電流を一定に制御し前記ＤＣモータの回
転数を一定に制御する機能を備えた誘導加熱調理器。a power conversion circuit that converts a commercial AC power source into DC; an inverter circuit connected to the output side of the power conversion circuit; a control circuit that controls the inverter circuit; a power supply circuit that supplies power to the control circuit; It has a DC motor that rotates a cooling fan that cools a control circuit, etc., the control circuit and the DC motor are electrically connected in series to the output of the power supply circuit, and the control circuit is connected to the DC motor.
An induction heating cooker having a function of controlling the current flowing through the motor to a constant value and controlling the rotation speed of the DC motor to a constant value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63087483A JP2625852B2 (en) | 1988-04-08 | 1988-04-08 | Induction heating cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63087483A JP2625852B2 (en) | 1988-04-08 | 1988-04-08 | Induction heating cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01260783A true JPH01260783A (en) | 1989-10-18 |
| JP2625852B2 JP2625852B2 (en) | 1997-07-02 |
Family
ID=13916191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63087483A Expired - Lifetime JP2625852B2 (en) | 1988-04-08 | 1988-04-08 | Induction heating cooker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2625852B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61284085A (en) * | 1985-06-07 | 1986-12-15 | 松下電器産業株式会社 | Induction heating cooker |
| JPS61290686A (en) * | 1985-06-18 | 1986-12-20 | 松下電器産業株式会社 | Induction heating cooker |
-
1988
- 1988-04-08 JP JP63087483A patent/JP2625852B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61284085A (en) * | 1985-06-07 | 1986-12-15 | 松下電器産業株式会社 | Induction heating cooker |
| JPS61290686A (en) * | 1985-06-18 | 1986-12-20 | 松下電器産業株式会社 | Induction heating cooker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2625852B2 (en) | 1997-07-02 |
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