JPH0562772A - Induction-heated cooking device - Google Patents
Induction-heated cooking deviceInfo
- Publication number
- JPH0562772A JPH0562772A JP21991691A JP21991691A JPH0562772A JP H0562772 A JPH0562772 A JP H0562772A JP 21991691 A JP21991691 A JP 21991691A JP 21991691 A JP21991691 A JP 21991691A JP H0562772 A JPH0562772 A JP H0562772A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- detection circuit
- output
- sensitive element
- oil
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は誘導加熱調理器に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating cooker.
【０００２】[0002]
【従来の技術】従来この種誘導加熱調理器は図５および
図６に示すようになっていた。すなわち、１は天板、２
は加熱コイル、３は感温素子、４は温度検出回路５や出
力判定回路６などを含んだ制御回路である。2. Description of the Related Art Conventionally, this type of induction heating cooker has been shown in FIGS. That is, 1 is a top plate, 2
Is a heating coil, 3 is a temperature sensitive element, and 4 is a control circuit including a temperature detection circuit 5, an output determination circuit 6, and the like.
【０００３】以上のように構成された誘導加熱調理器に
ついて、以下図７を参照しながらその動作について説明
する。温度検出回路５は感温素子３の温度を出力し、出
力判定回路６はあらかじめ設定されたレベルＡと温度検
出回路の出力とを比較して温度検出回路の出力が設定レ
ベルＡに達すると加熱コイル２の加熱を停止するように
なっている。The operation of the induction heating cooker configured as described above will be described below with reference to FIG. The temperature detection circuit 5 outputs the temperature of the temperature sensitive element 3, and the output determination circuit 6 compares the preset level A with the output of the temperature detection circuit and heats when the output of the temperature detection circuit reaches the set level A. The heating of the coil 2 is stopped.
【０００４】[0004]
【発明が解決しようとする課題】ここで、天板１の上に
底面が平らな鍋に少量の油を入れて加熱している場合を
考える。出力判定回路６の設定レベルＡは通常の焼き物
や揚げ物など高温の調理が支障なく行える温度に設定さ
れている。しかし、少量の油を加熱する場合には鍋全体
の熱容量が小さく、かつ感温素子３は天板１を介して鍋
の温度を検知するので、感温素子３は鍋の温度上昇に追
従できない。このため感温素子３の温度が設定レベルＡ
に達する時間Ｄまでは最高出力Ｃで加熱を続け、鍋の中
の油の温度は発火温度Ｂに達するので、火災の恐れなど
たいへん危険な状態となる。Now, let us consider a case where a small amount of oil is put in a pan having a flat bottom on the top plate 1 to heat the pan. The setting level A of the output determination circuit 6 is set to a temperature at which high-temperature cooking such as ordinary grilled foods and fried foods can be performed without any trouble. However, when a small amount of oil is heated, the heat capacity of the entire pan is small, and the temperature-sensitive element 3 detects the temperature of the pan via the top plate 1. Therefore, the temperature-sensitive element 3 cannot follow the temperature rise of the pan. .. Therefore, the temperature of the temperature sensitive element 3 is set to the set level A.
The heating continues at the maximum output C until the time D reaches, and the temperature of the oil in the pan reaches the ignition temperature B, so that there is a very dangerous state such as a fear of fire.
【０００５】本発明は上記従来の問題点を解決するもの
で、底面が平らな鍋に少量の油を入れて加熱している場
合でも鍋の中の油の温度を発火温度に達し難くし、安全
性を向上した誘導加熱調理器を提供することを第１の目
的とする。The present invention solves the above-mentioned problems of the prior art by making it difficult for the temperature of the oil in the pan to reach the ignition temperature even when a small amount of oil is put in a pan with a flat bottom for heating. A first object is to provide an induction heating cooker with improved safety.
【０００６】第２の目的は湯沸かしや煮物など比較的低
温調理の調理性を低下させないことにある。[0006] The second purpose is not to lower the cookability of relatively low-temperature cooking such as boiling water and cooked food.
【０００７】[0007]
【課題を解決するための手段】そして上記第１の目的を
達成するために本発明の誘導加熱調理器は、天板裏面に
圧接された感温素子と、感温素子の温度を出力する温度
検出回路と、温度検出回路の出力を得て感温素子の所定
時間における温度変化を出力する温度変化量検出回路と
を備え、温度変化量検出回路の検出量が所定値を越えた
際に加熱出力を低下させて成るものである。In order to achieve the above-mentioned first object, the induction heating cooker of the present invention is provided with a temperature sensitive element pressed against the back surface of a top plate and a temperature for outputting the temperature of the temperature sensitive element. Equipped with a detection circuit and a temperature change amount detection circuit that obtains the output of the temperature detection circuit and outputs the temperature change of the temperature sensitive element for a predetermined time, and heats when the detection amount of the temperature change amount detection circuit exceeds a predetermined value. It is made by reducing the output.
【０００８】また第二の目的を達成するために本発明の
誘導加熱調理器は、天板裏面に圧接された感温素子と、
感温素子の温度を出力する温度検出回路と、温度検出回
路の出力を得て感温素子の所定時間における温度変化を
出力する温度変化量検出回路とを備え、温度変化量検出
回路は感温素子が所定温度以上において連続して動作
し、温度変化量検出回路の検出量が所定値を越えた際に
加熱出力を低下させて成るものである。In order to achieve the second object, the induction heating cooker according to the present invention comprises a temperature sensitive element pressed against the back surface of the top plate,
It is equipped with a temperature detection circuit that outputs the temperature of the temperature sensitive element and a temperature change amount detection circuit that obtains the output of the temperature detection circuit and outputs the temperature change of the temperature sensitive element for a predetermined time. The element operates continuously at a predetermined temperature or higher, and the heating output is reduced when the detection amount of the temperature change amount detection circuit exceeds a predetermined value.
【０００９】[0009]
【作用】本発明の誘導加熱調理器は上記構成により、底
面が平らな鍋に少量の油を入れて加熱している場合に
は、感温素子の温度上昇速度は、通常調理時の揚げ物や
湯沸かしなどに比べて急激になるため、温度変化量検出
回路が温度検出回路の出力を得て感温素子の所定時間に
おける温度変化の検出量が所定値を越えるので、加熱コ
イルの加熱出力を低下させ、油の温度上昇を遅らせて感
温素子の温度追従を向上させるものである。そして、感
温素子の油の温度に対する検知を向上し、油の温度を発
火温度に達し難くして安全性を向上した誘導加熱調理器
を提供することができる。With the above-described structure, the induction heating cooker of the present invention, when a small amount of oil is put in a pan having a flat bottom to heat it, the temperature rising speed of the temperature sensing element is higher than that of fried food during normal cooking. Since the temperature change amount detection circuit obtains the output of the temperature detection circuit and the detected amount of temperature change of the temperature sensitive element exceeds the predetermined value for a certain period of time, the heating output of the heating coil decreases. The temperature rise of the oil is delayed to improve the temperature following of the temperature sensitive element. Further, it is possible to provide an induction heating cooker that improves detection of the temperature of the temperature sensitive element with respect to the oil temperature, makes it difficult for the oil temperature to reach the ignition temperature, and improves safety.
【００１０】また、感温素子の温度が所定以上において
温度変化量検出回路の検出量が所定時間に所定値を越え
た際に加熱出力を低下させるものは、湯沸かしや煮物な
ど比較的低温調理においては加熱出力の低下が起こら
ず、調理性能を低下させずに油発火に対する安全性を向
上した誘導加熱調理器を提供することができる。Further, a device that lowers the heating output when the detected amount of the temperature change amount detection circuit exceeds a predetermined value in a predetermined time when the temperature of the temperature sensitive element is higher than a predetermined value is used in relatively low temperature cooking such as boiling water or cooked food. Can provide an induction heating cooker in which the heating output does not decrease and the safety against oil ignition is improved without lowering the cooking performance.
【００１１】[0011]
【実施例】（実施例１）以下本発明の一実施例について
図面を参照しながら説明する。Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings.
【００１２】図１および図２において、１１は天板、１
２は加熱コイル、１３はサーミスタから成る感温素子、
１４は温度検出回路１５および温度変化量検出回路１６
などを含んだ制御回路である。1 and 2, 11 is a top plate, 1
2 is a heating coil, 13 is a temperature sensitive element consisting of a thermistor,
14 is a temperature detection circuit 15 and a temperature change amount detection circuit 16
It is a control circuit including the above.
【００１３】以上のように構成された誘導加熱調理器に
ついて、図３を参照しながらその動作を説明する。温度
検出回路１５は感温素子１３の温度を出力し、温度変化
量検出回路１６はあらかじめ設定されたレベルＥと温度
検出回路の出力とを比較して温度検出回路の出力が設定
レベルＥに達すると加熱コイル１２の加熱を停止するよ
うになっているが、さらに、天板１１の上に底面が平ら
な鍋に少量の油を入れて加熱している場合のように感温
素子１３の温度上昇速度が急激な際は、温度変化量検出
回路１６が温度検出回路１５の出力を得て感温素子１３
の所定時間Ｆにおける温度変化の検出量Ｇが所定値Ｈを
越えるので、加熱コイル１２の加熱出力を最高出力Ｊに
対しＫまで低下させ、油の温度上昇を遅らせて感温素子
の温度追従を向上させるものである。そして、感温素子
１３の油の温度に対する検知を向上し、油の温度を発火
温度Ｌに達し難くし、安全性を向上した誘導加熱調理器
を得ることができる。本実施例では、温度変化量検出回
路１６が検出する所定時間Ｆはおよそ３秒、温度変化量
検出回路１６が検出する所定値Ｈは１秒当たり１℃、加
熱最高出力Ｊに対する低下出力Ｋの割合はおよそ７０％
である。The operation of the induction heating cooker configured as described above will be described with reference to FIG. The temperature detection circuit 15 outputs the temperature of the temperature sensitive element 13, and the temperature change amount detection circuit 16 compares the preset level E with the output of the temperature detection circuit and the output of the temperature detection circuit reaches the set level E. Then, the heating of the heating coil 12 is stopped, but the temperature of the temperature sensing element 13 is further changed as in the case where a small amount of oil is put in a pan having a flat bottom on the top plate 11 to heat the pan. When the rising speed is rapid, the temperature change amount detection circuit 16 obtains the output of the temperature detection circuit 15 to obtain the temperature sensitive element 13.
Since the detected amount G of the temperature change in the predetermined time F exceeds the predetermined value H, the heating output of the heating coil 12 is decreased to K with respect to the maximum output J, and the temperature rise of the oil is delayed to follow the temperature of the temperature sensing element. To improve. Then, the detection of the temperature of the temperature sensing element 13 with respect to the oil temperature is improved, the oil temperature is less likely to reach the ignition temperature L, and an induction heating cooker with improved safety can be obtained. In the present embodiment, the predetermined time F detected by the temperature change amount detection circuit 16 is about 3 seconds, the predetermined value H detected by the temperature change amount detection circuit 16 is 1 ° C. per second, and the reduced output K with respect to the maximum heating output J is The ratio is about 70%
Is.
【００１４】また、本実施例では感温素子１３の温度上
昇が急激な場合でも加熱出力を最小まで低下させないの
で、たとえば焼き物の初回予熱の場合のように感温素子
１３の温度上昇が急激な場合でも加熱出力は大幅に低下
しないので、焼き物プレートの温度が十分に上昇しない
という不都合を生じない。Further, in this embodiment, even if the temperature of the temperature sensitive element 13 rises rapidly, the heating output is not lowered to the minimum, so that the temperature of the temperature sensitive element 13 rises rapidly as in the case of the first preheating of the grill. Even in such a case, the heating output does not significantly decrease, so that there is no inconvenience that the temperature of the grill plate does not rise sufficiently.
【００１５】（実施例２）以下本発明の第２の実施例に
ついて図面を参照しながら説明する。(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings.
【００１６】本実施例の構成は前記実施例の図１および
図２と同様なものである。異なるのは図４において、感
温素子１３の温度が所定温度Ｍ以上において初めて温度
変化量検出回路１６の検出量Ｇが所定時間Ｆに所定値Ｈ
を越えた際に加熱出力を最高出力Ｊに対しＫまで低下さ
せる点であり、所定温度Ｍはおよそ１２０℃に設定され
ている。The structure of this embodiment is similar to that of FIGS. 1 and 2 of the above embodiment. 4 differs from that in FIG. 4 only when the temperature of the temperature sensitive element 13 is equal to or higher than a predetermined temperature M, the detected amount G of the temperature change amount detection circuit 16 is a predetermined value H in a predetermined time F.
The predetermined temperature M is set to about 120 ° C., which is the point that the heating output is lowered to K with respect to the maximum output J when the temperature exceeds the upper limit.
【００１７】以上のように構成された誘導加熱調理器に
ついて、以下その動作を説明する。加熱出力をＫまで低
下する動作の開始温度Ｍをおよそ１２０℃とすれば、調
理頻度が高いといえる湯沸かしや煮物など比較的低温調
理中においては感温素子１３の温度はこの温度まで上昇
せず、加熱出力の低下は起こらないので湯沸かしや煮物
などにおいては調理性を低下させず、かつ油発火に対す
る安全性を向上した誘導加熱調理器を提供することがで
きる。The operation of the induction heating cooker configured as described above will be described below. If the starting temperature M of the operation for lowering the heating output to K is set to about 120 ° C., the temperature of the temperature sensitive element 13 does not rise to this temperature during relatively low-temperature cooking such as kettles and cooked foods that can be said to have a high cooking frequency. Since the heating output does not decrease, it is possible to provide an induction heating cooker that does not deteriorate cooking properties in boiling water or cooked foods and that has improved safety against oil ignition.
【００１８】[0018]
【発明の効果】以上のように本発明は、温度変化量検出
回路の検出量が所定値を越えた際に加熱出力を低下させ
て成るものであるので、底面が平らな鍋に少量の油を入
れて加熱している場合でも鍋の中の油の温度を発火温度
に達し難くし、安全性を向上した誘導加熱調理器を提供
するものである。As described above, according to the present invention, the heating output is reduced when the detection amount of the temperature change amount detection circuit exceeds a predetermined value. Therefore, a small amount of oil is put in a pan with a flat bottom. It is an object of the present invention to provide an induction heating cooker in which the temperature of the oil in the pan is less likely to reach the ignition temperature even when it is heated by putting it in and the safety is improved.
【００１９】また本発明は、感温素子の温度が所定以上
において温度変化量検出回路の検出量が所定時間に所定
値を越えた際に加熱出力を低下させるものであるので、
湯沸かしや煮物など比較的低温調理においては加熱出力
の低下が起こらず、調理性能を低下させずに油発火に対
する安全性を向上した誘導加熱調理器を提供することが
できるものである。Further, according to the present invention, the heating output is reduced when the detected amount of the temperature change amount detection circuit exceeds a predetermined value in a predetermined time when the temperature of the temperature sensitive element is higher than a predetermined value.
It is possible to provide an induction heating cooker in which the heating output does not decrease in relatively low-temperature cooking such as boiling water or cooked food, and cooking safety is improved without lowering cooking performance.
【図１】本発明の第１の実施例における誘導加熱調理器
の回路ブロック図FIG. 1 is a circuit block diagram of an induction heating cooker according to a first embodiment of the present invention.
【図２】本発明の第１の実施例における誘導加熱調理器
の断面図FIG. 2 is a sectional view of an induction heating cooker according to the first embodiment of the present invention.
【図３】本発明の第１の実施例における誘導加熱調理器
の動作説明図FIG. 3 is an operation explanatory view of the induction heating cooker according to the first embodiment of the present invention.
【図４】本発明の第２の実施例における誘導加熱調理器
の動作説明図FIG. 4 is an operation explanatory view of the induction heating cooker according to the second embodiment of the present invention.
【図５】従来の誘導加熱調理器の断面図FIG. 5 is a sectional view of a conventional induction heating cooker.
【図６】従来の誘導加熱調理器の回路ブロック図FIG. 6 is a circuit block diagram of a conventional induction heating cooker.
【図７】従来の誘導加熱調理器の動作説明図FIG. 7 is an operation explanatory view of a conventional induction heating cooker.
１３ 感温素子 １５ 温度検出回路 １６ 温度変化量検出回路 Ｆ 感温素子の温度変化を測定する所定時間 Ｈ 温度変化量検出回路の検出量の所定値 Ｍ 感温素子の所定温度 13 Temperature Sensing Element 15 Temperature Detection Circuit 16 Temperature Change Amount Detection Circuit F Predetermined Time to Measure Temperature Change of Temperature Sensing Element H Predetermined Value of Detection Amount of Temperature Change Amount Detection Circuit M Predetermined Temperature of Temperature Sensing Element
Claims (2)
温素子の温度を出力する温度検出回路と、前記温度検出
回路の出力を得て前記感温素子の所定時間における温度
変化を出力する温度変化量検出回路とを備え、前記温度
変化量検出回路の検出量が所定値を越えた際に加熱出力
を低下させて成る誘導加熱調理器。1. A temperature-sensitive element disposed on the back surface of a top plate, a temperature detection circuit for outputting the temperature of the temperature-sensitive element, and an output of the temperature detection circuit to obtain a temperature change of the temperature-sensitive element at a predetermined time. And a temperature change amount detection circuit that outputs a temperature change amount detection circuit, and reduces the heating output when the detection amount of the temperature change amount detection circuit exceeds a predetermined value.
温素子の温度を出力する温度検出回路と、前記温度検出
回路の出力を得て前記感温素子の所定時間における温度
変化を出力する温度変化量検出回路とを備え、前記温度
変化量検出回路は前記感温素子が所定温度以上において
連続して動作し、前記温度変化量検出回路の検出量が所
定値を越えた際に加熱出力を低下させて成る誘導加熱調
理器。2. A temperature sensitive element pressed against the back surface of a top plate, a temperature detection circuit for outputting the temperature of the temperature sensitive element, and an output of the temperature detection circuit to obtain a temperature change of the temperature sensitive element in a predetermined time. And a temperature change amount detection circuit for outputting the temperature change amount detection circuit, wherein the temperature change amount detection circuit operates when the temperature sensing element continuously operates at a predetermined temperature or higher, and the detection amount of the temperature change amount detection circuit exceeds a predetermined value. An induction heating cooker that reduces the heating output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21991691A JP3109160B2 (en) | 1991-08-30 | 1991-08-30 | Induction heating cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21991691A JP3109160B2 (en) | 1991-08-30 | 1991-08-30 | Induction heating cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0562772A true JPH0562772A (en) | 1993-03-12 |
| JP3109160B2 JP3109160B2 (en) | 2000-11-13 |
Family
ID=16743035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21991691A Expired - Fee Related JP3109160B2 (en) | 1991-08-30 | 1991-08-30 | Induction heating cooker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3109160B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013069543A (en) * | 2011-09-22 | 2013-04-18 | Mitsubishi Electric Corp | Induction heating cooker |
| JP2014056846A (en) * | 2013-12-25 | 2014-03-27 | Mitsubishi Electric Corp | Induction heating cooker |
-
1991
- 1991-08-30 JP JP21991691A patent/JP3109160B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013069543A (en) * | 2011-09-22 | 2013-04-18 | Mitsubishi Electric Corp | Induction heating cooker |
| JP2014056846A (en) * | 2013-12-25 | 2014-03-27 | Mitsubishi Electric Corp | Induction heating cooker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3109160B2 (en) | 2000-11-13 |
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