JP5262544B2 - Induction heating cooker - Google Patents

Induction heating cooker Download PDF

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JP5262544B2
JP5262544B2 JP2008260529A JP2008260529A JP5262544B2 JP 5262544 B2 JP5262544 B2 JP 5262544B2 JP 2008260529 A JP2008260529 A JP 2008260529A JP 2008260529 A JP2008260529 A JP 2008260529A JP 5262544 B2 JP5262544 B2 JP 5262544B2
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temperature
induction heating
inverter
time
infrared temperature
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JP2010092679A5 (en
JP2010092679A (en
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暦 渡邊
純子 杉谷
さつき 青山
英明 小林
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an induction heating cooking device which prevents scorching or excessive scorching in cooking. <P>SOLUTION: This induction heating cooking device has an induction heating coil 2 to heat an object 1 to be heated, an inverter 3 to supply a high frequency current, a control means 4 to control the output of the inverter 3, an operating part 5 for a user to set heating power, an infrared temperature detecting means 7 to detect the temperature of the object 1 to be heated, a time measuring means 8 to count a time, and scorching is recognized when the temperature detected by the infrared temperature detecting means 7 reaches a set value or higher, and the output is stopped or changed to suppress advance of scorching. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、過加熱による焦げつきを防ぐ誘導加熱調理器に関するものである。   The present invention relates to an induction heating cooker that prevents scorching due to overheating.

従来、この種の誘導加熱調理器では、沸騰検知に基づいて定めた焦げ付き判定温度に達すると発熱量を制御する構成を有していた（例えば、特許文献１参照）。
特許第２９７０６５５号公報 Conventionally, this type of induction heating cooker has a configuration that controls the amount of generated heat when it reaches a burn-in determination temperature determined based on boiling detection (see, for example, Patent Document 1).
Japanese Patent No. 2970655

しかしながら、実際には様々な鍋やフライパンがあり、食材も様々、多種多様の条件がある中で絶対温度を検知する温度検知手段で沸騰検知を精度良く行うことは非常に難しく、例えば鍋やフライパンが反っていたり、内側にフッ素樹脂加工がされていたり、トッププレートが熱かったり等、機器や使用器具によるハード的な要因と、水以外の調理物で調理を行うと沸騰検知がずれるあるいはできないといった調理物そのものの要因により、現実には、沸騰検知を正確に検知できる調理器は存在しないといっても過言ではない。   However, there are actually various pots and pans, and there are various ingredients and various conditions. It is very difficult to accurately detect boiling with temperature detecting means that detects absolute temperature. For example, pots and pans If you cook with something other than water, such as the warping, the fluorine resin processing inside, the top plate is hot, etc. It is no exaggeration to say that in reality there is no cooker that can accurately detect boiling detection due to the factors of the cooked food itself.

このような中で沸騰検知の結果を基に焦げつき判定を行うことは、精度が悪いという課題を有していた。   Under such circumstances, performing burn determination based on the result of boiling detection has a problem of poor accuracy.

本発明は、前記従来の課題を解決するもので、赤外線方式による温度検知手段を使用することで、調理の焦げつきあるいは焦げつきすぎを防止する誘導加熱調理器を提供することを目的とする。   SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide an induction heating cooker that prevents cooking burns or overburns by using an infrared temperature detection means.

前記従来の課題を解決するために、本発明の誘導加熱調理器は、被加熱物を載置するトッププレートと、前記被加熱物を加熱する誘導加熱コイルと、誘導加熱コイルに高周波電流を供給するインバータと、使用者が火力設定を行う操作部と、前記被加熱物の温度を検知する赤外線式温度検知手段と、時間をカウントする時間測定手段と、前記赤外線温度検知手段により沸騰を検知した後、前記赤外線式温度検知手段による検知温度の上昇速度が設定値以上になった場合、焦げつきと認識し、前記インバータの出力を停止あるいは火力
を低下させる制御手段と、を備え、前記制御手段は、前記赤外線温度検知手段により沸騰を検知した後、前記赤外線温度検知手段による前記検知温度が焦げつき判定開始温度になった時から前記時間測定手段で時間のカウントを開始し、前記焦げつきを認識せず判定時間経過すると、前記インバータの出力を停止するあるいは火力を低下させるとともに、前記火力設定が大きいほど、前記判定開始温度を高くし、かつ前記判定時間を短くすることにより、高火力を出力できることで焦げつきが発生しやすい誘導加熱調理器でも失敗せずに調理が行えることを目指したものである。
In order to solve the above-described conventional problems, an induction heating cooker according to the present invention supplies a top plate on which an object to be heated is placed, an induction heating coil for heating the object to be heated, and a high-frequency current to the induction heating coil. To detect the boiling by the inverter, the operation unit for the user to set the thermal power, the infrared temperature detecting means for detecting the temperature of the heated object, the time measuring means for counting the time, and the infrared temperature detecting means Thereafter, when the temperature rising speed detected by the infrared temperature detecting means is equal to or higher than a set value, the control means recognizes that it is burnt and stops the output of the inverter or lowers the heating power. After the boiling is detected by the infrared temperature detecting means, the time measuring means from the time when the detected temperature by the infrared temperature detecting means becomes a burning determination start temperature. Counting the start between, the determination time elapses without recognizing the scorching, with lowering or thermal stops output of the inverter, as the heating power setting is large, a higher the judgment start temperature, and the determination By shortening the time, the aim is to be able to cook without failure even in an induction heating cooker that is likely to cause scorching because it can output high thermal power.

本発明の誘導加熱調理器は、焦げつきあるいは焦げつきすぎを抑制し、失敗なく調理することができる。   The induction heating cooker of the present invention suppresses burning or overburning and can cook without failure.

また、沸騰前の傾きの変化で誤検知することがなく、加熱開始後から使用者は制限されることなく調理を行うことができると共に検知の信頼性も高められる。  In addition, there is no false detection due to a change in the inclination before boiling, the user can cook without restriction after the start of heating, and the reliability of the detection is enhanced.

また、焦げつきは火力により発生速度が異なることをふまえたプログラムを作りこむことが可能となり、結果焦げつきを検知する検知精度を上げることが可能となる。  In addition, it is possible to create a program based on the fact that the burning speed varies depending on the thermal power, and it is possible to increase the detection accuracy for detecting the burning.

第１の発明は、被加熱物を載置するトッププレートと、前記被加熱物を加熱する誘導加熱コイルと、誘導加熱コイルに高周波電流を供給するインバータと、使用者が火力設定を行う操作部と、前記被加熱物の温度を検知する赤外線温度検知手段と、時間をカウントする時間測定手段と、前記赤外線温度検知手段により沸騰を検知した後、前記赤外線温度検知手段による検知温度の上昇速度が設定値以上になった場合、焦げつきと認識し、前記インバータの出力を停止するあるいは火力を低下させる制御手段と、を備え、前記制御手段は、前記赤外線温度検知手段により沸騰を検知した後、前記赤外線温度検知手段による前記検知温度が焦げつき判定開始温度になった時から前記時間測定手段で時間のカウントを開始し、前記焦げつきを認識せず判定時間経過すると、前記インバータの出力を停止するあるいは火力を低下させるとともに、前記火力設定が大きいほど、前記判定開始温度を高くし、かつ前記判定時間を短くする誘導加熱調理器としたものであり、これにより絶対温度を検知する温度検知手段方式と異なりタイムラグなく、確実に焦げを防ぐことが可能となる。
The first invention includes a top plate on which an object to be heated is placed, an induction heating coil that heats the object to be heated, an inverter that supplies a high-frequency current to the induction heating coil, and an operation unit in which a user performs thermal power setting And an infrared temperature detecting means for detecting the temperature of the object to be heated, a time measuring means for counting time, and after the boiling is detected by the infrared temperature detecting means, the rising speed of the detected temperature by the infrared temperature detecting means is A control unit that recognizes scorching when the set value or more is reached and stops the output of the inverter or reduces thermal power, and the control unit detects boiling by the infrared temperature detection unit, When the temperature detected by the infrared temperature detecting means reaches the burning determination start temperature, the time measuring means starts counting time to recognize the burning. When the elapsed determination time, along with lowering or thermal stops output of the inverter, as the heating power setting is large, a higher the judgment start temperature, and is obtained by an induction heating cooker to shorten the determination time Thus, unlike the temperature detecting means method for detecting the absolute temperature, it is possible to reliably prevent burning without time lag.

また、沸騰を検知した後、焦げつき検知を行うので、沸騰前の傾きの変化で誤検知することがなく、加熱開始後から使用者は制限されることなく調理を行うことができると共に検知の信頼性も高められる。 In addition , after detecting boiling, scorching is detected, so there is no false detection due to a change in tilt before boiling, and the user can cook without restriction after the start of heating and the reliability of detection. Sexuality is also improved.

この時、従来と同様絶対温度で沸騰検知を行うが、それは沸騰温度以上の絶対温度になっていると認識する為のものであり、調味料や食材及び鍋種による沸騰検知誤差は焦げつき検知精度には影響を与えない。   At this time, boiling detection is performed at the absolute temperature as before, but it is for recognizing that the absolute temperature is higher than the boiling temperature, and the boiling detection error due to the seasoning, ingredients, and pan type is the burning detection accuracy. Has no effect.

また、設定火力に応じて、赤外線温度検知手段と時間測定手段を組み合わせた結果のパラメータを設定し、そのパラメータを基にして焦げつきだと認識し、出力を停止するあるいは火力を低下させるとしたものであり、これにより焦げつきは火力により発生速度が異なることをふまえたプログラムを作りこむことが可能となり、結果焦げつきを検知する検知精度を上げることが可能となる。 Further, according to the set heating power, set the parameters of the result of combining infrared temperature detecting means and time measuring means, it recognizes that it scorching by the parameters based on, was suppose to reduce the the stop to or thermal output Therefore, it is possible to create a program based on the fact that the burning speed varies depending on the thermal power, and as a result, it is possible to increase the detection accuracy for detecting burning.

第２の発明は、第１の発明において、前記制御手段は、前記焦げつきと認識したことにより前記インバータの火力を低下させた後、前記赤外線温度検知手段による前記検知温度が前記焦げつきと認識した時の温度から所定温度以上低下した場合に、前記インバータの火力を上げるとしたものであり、これにより焦げつきと認識した後、水分の追加や材料追加が行われたと前記温度検知手段が認識した際に、出力を上げ調理を続行し、その後水分がなくなり赤外線温度検知手段の検知結果が焦げつき検知だと認識すればその結果に応じて出力変更することで失敗なく調理が続けられるようにしたものである。 According to a second aspect of the present invention, in the first aspect, when the control means recognizes the burn as a result of reducing the thermal power of the inverter by recognizing the burn, and the temperature detected by the infrared temperature detection means is recognized as the burn When the temperature detection unit recognizes that the addition of moisture or material has been performed after recognizing that it has been burned, when the temperature of the inverter drops below a predetermined temperature or more, , Raise the output and continue cooking, and if the moisture disappears afterwards, if it is recognized that the detection result of the infrared temperature detection means is burnt detection, the cooking is continued without failure by changing the output according to the result. .

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の第１の実施の形態における誘導加熱調理器のブロック図を示すものである。 (Embodiment 1)
FIG. 1 shows a block diagram of an induction heating cooker according to the first embodiment of the present invention.

図１において、１は被加熱物、２は誘導加熱コイル、３はインバータ、４は制御手段であり、５は使用者が加熱の設定を行う操作部、６は被加熱物を載置するトッププレート、７は被加熱物１あるいはトッププレート６の温度を検知する温度検知手段、８は時間をカウントする時間測定手段である。   In FIG. 1, 1 is an object to be heated, 2 is an induction heating coil, 3 is an inverter, 4 is a control means, 5 is an operation unit for a user to set heating, and 6 is a top on which the object to be heated is placed. A plate 7 is a temperature detecting means for detecting the temperature of the article 1 or the top plate 6, and 8 is a time measuring means for counting time.

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、作用をさばの味噌煮を例に説明する。   About the induction heating cooking appliance comprised as mentioned above, the operation | movement and effect | action are demonstrated to the example for the miso boiled mackerel.

使用者が、煮汁が入った被加熱物１の鍋あるいはフライパンをトッププレート６に載置し、操作部５で火力を設定し予熱及び調理を開始すると、温度検知手段７及び時間測定手段８の情報と共にその信号が制御手段４に送られ、その制御に応じてインバータ３から加熱コイル２に高周波が供給され、加熱が開始される。煮汁が沸騰し、食材のさばを投入した後、煮汁がなくなると共に温度検知手段による傾き検知結果は変化していくが、その検知結果が例えば５秒で３℃以上上がれば、焦げつきであると検知し、制御手段４により出
力を下げるか停止させる。 When the user places the pan or frying pan of the heated object 1 containing the broth on the top plate 6, sets the heating power with the operation unit 5 and starts preheating and cooking, the temperature detecting means 7 and the time measuring means 8 The signal is sent to the control means 4 together with the information, and a high frequency is supplied from the inverter 3 to the heating coil 2 according to the control, and heating is started. After boiling the boiled juice and adding the ingredients, the broiled juice disappears and the tilt detection result by the temperature detection means changes, but if the detection result rises above 3 ° C in 5 seconds, for example, it is detected that it is burnt Then, the output is lowered or stopped by the control means 4.

以上のように本実施の形態においては、赤外線温度検知手段による傾きを見て焦げつき検知を行うので、焦げつき始めると即座に検知を行える為、焦げの進行を抑えることができる。   As described above, in the present embodiment, scoring is detected by looking at the inclination by the infrared temperature detecting means. Therefore, since scoring can be performed immediately when scoring starts, the progress of scoring can be suppressed.

この時、焦げつきであると検知する際に、一定値以上の傾きが例えば１０秒以上続けば焦げつきと検知するといった焦げつき検知に時間の概念を加えることも可能である。   At this time, it is also possible to add the concept of time to scoring detection, such as detecting scorching when the inclination of a certain value or more continues for 10 seconds or more when detecting scorching.

尚、上記の数値は説明のための具体例値であり、数値はこの限りではない。   In addition, said numerical value is a specific example value for description, and a numerical value is not this limitation.

（実施の形態２）
図２は、本発明の第２の実施の形態における誘導加熱調理器のブロック図を示すものである。 (Embodiment 2)
FIG. 2 shows a block diagram of an induction heating cooker according to the second embodiment of the present invention.

図２において１〜８は図１と同様であり、９は絶対温度検知手段である。   2, 1 to 8 are the same as those in FIG. 1, and 9 is an absolute temperature detecting means.

以上のように構成された誘導加熱調理器について、以下にその動作、作用を説明する。   About the induction heating cooking appliance comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

一般的に煮物や煮込み等の調理では煮汁が沸騰し、蒸発して水分が失われる工程を経てから焦げが進行する。従って、絶対温度検知手段９により沸騰時の温度（約１００℃）を検知した後、赤外線式温度検知手段７で焦げつきを検知し、制御手段４により出力を変更させるという２方式の温度検知手段を組み合わせ、加熱を行うことで、確実に且つ即座に焦げつきを検知し、焦げが進行することなく火力を下げるか停止させることができる。 Generally, in cooking such as boiled food and stew, the soup is boiled and burnt after a process of evaporating and losing moisture. Therefore, after the boiling temperature (about 100 ° C.) is detected by the absolute temperature detection means 9, the two-type temperature detection means in which the infrared temperature detection means 7 detects the burning and the control means 4 changes the output. combining seen, by performing the heating, to detect reliably and scorching in real can be stopped or reduced the heating power without scorching proceeds.

この時、もし沸騰の検知を行わなければ、沸騰までに調理物を投入する段階で傾き値が焦げつき検知の設定値になった際、焦げつきだと誤検知してしまう可能性があり、調理物が生のまま調理が終了されてしまう可能性がある。   At this time, if the boiling is not detected, there is a possibility that it will be erroneously detected as a burnt when the tilt value reaches the set value for burning detection at the stage of adding the food before boiling. There is a possibility that cooking will be finished raw.

以上のように本発明によれば、赤外線方式の温度検知手段に絶対温度検知手段を組み合わせ、調理物が沸騰した後のみ焦げつき検知を行うようにすることにより、焦げつき検知の際の誤検知を抑え、精度を高めることができる。   As described above, according to the present invention, by combining the infrared temperature detection means with the absolute temperature detection means and performing the burn detection only after the cooked food has boiled, false detection at the time of burning detection is suppressed. , Can improve accuracy.

また、赤外線方式の温度検知手段で絶対温度を認識することで、絶対温度検知手段の代替とし、焦げつき検知を行うことも可能である。   In addition, by recognizing the absolute temperature with the infrared temperature detection means, it is possible to detect burning by replacing the absolute temperature detection means.

（実施の形態３）
下表は、本発明の第３の実施の形態の誘導加熱調理器におけるパラメータ表である。この表と図２を基に以下その動作、作用を説明する。 (Embodiment 3)
The following table is a parameter table in the induction heating cooker according to the third embodiment of the present invention. The operation and action will be described below with reference to this table and FIG.

焦げつきは絶対温度による影響がかなり大きいが、例え１０５℃といった低温度でも加熱時間が長くなるに従って焦げは少しづつ進行する。また、１５０℃以上の高温度では秒単位で焦げが発生する。   Burning is significantly affected by absolute temperature, but burning progresses little by little as the heating time increases even at a low temperature such as 105 ° C. Also, scorching occurs in seconds at a high temperature of 150 ° C. or higher.

例えば、カレーの煮込みは焦げやすい代表メニューであるが、カレーを作る際、食材を煮込んで材料に火が通った後、通常は火力を落として煮込みを続ける。その際、もしも火力を落とさずに１０００Ｗを継続して加熱し続ければ、当然煮込みをスタートしてから徐々に底温度は上昇し、最終的には焦げに至る。この時、赤外線温度検知手段７あるいは絶対温度検知手段９により鍋底温度が１２５℃になった時から時間測定手段８により時間をカウントし始め、４８０秒後に加熱を停止するか出力を下げる。   For example, curry stew is a representative menu that is easy to burn, but when making curry, the ingredients are boiled and the ingredients are cooked. At that time, if the heating is continued for 1000 W without dropping the heating power, the bottom temperature gradually rises after the start of boiling, and eventually burns. At this time, when the pan bottom temperature reaches 125 ° C. by the infrared temperature detecting means 7 or the absolute temperature detecting means 9, the time measuring means 8 starts to count the time, and the heating is stopped or the output is lowered after 480 seconds.

または、材料に火が通った後、火力を４００Ｗに落として加熱を続ければ、赤外線温度検知手段７あるいは絶対温度検知手段９により鍋底温度が１１５℃になった時から時間測定手段８により時間をカウントし始め、９００秒後に加熱を停止するか出力を下げことになる。   Alternatively, after the material has been heated, if the heating power is reduced to 400 W and heating is continued, the time is measured by the time measuring means 8 from the time when the pan bottom temperature reaches 115 ° C. by the infrared temperature detecting means 7 or the absolute temperature detecting means 9. The counting starts and heating is stopped or the output is lowered after 900 seconds.

この時、傾きが上がりつづけている際のみと限定することも可能であり、あえて限定を設けず、時間測定手段８による結果のみで出力を変更することも可能である。 At this time, it is also possible to limit only when the inclination is continuously rising, dare not provided any limitation, it is also possible to change the output at only the results with time measuring means 8.

以上のように本発明によれば、設定火力に応じて、前記赤外線温度検知手段と前記時間測定手段を組み合わせた結果のパラメータを設定し、そのパラメータを基に焦げつきだと認識し、出力を停止するあるいは変更することで、焦げつき検知の精度を高めることができる。   As described above, according to the present invention, in accordance with the set thermal power, a parameter as a result of combining the infrared temperature detecting means and the time measuring means is set, and the output is recognized based on the parameter and recognized as being burned. By doing or changing, the accuracy of scoring detection can be increased.

（実施の形態４）
図３は、本発明の第４の実施の形態の誘導加熱調理器の温度検知手段測定温度グラフを示すものであり、以下その動作、作用を説明する。 (Embodiment 4)
FIG. 3 shows a temperature detection means measurement temperature graph of the induction heating cooker according to the fourth embodiment of the present invention, and its operation and action will be described below.

まず、肉じゃがを調理する際、食材を炒める為、赤外線温度検知手段７による測定結果は工程Ｉに示すように予熱時に急激に上昇し、その後鍋内温度２００〜２３０℃前後で食材が炒められる。その後、工程ＩＩに示すように水分や調味料が加えられ煮汁が沸騰し鍋内温度１００℃で安定し、工程ＩＩＩに示すように水分がなくなると赤外線温度検知手段７により焦げつき検知が行われる。その後、工程ＩＶ、工程Ｖの（ａ）に示すように出力を制御手段４と時間測定手段８が可能となると共に食材の品温も下がることなく維持することが可能となる。   First, when cooking meat potatoes, in order to fry the ingredients, the measurement result by the infrared temperature detecting means 7 rises rapidly during preheating as shown in Step I, and then the ingredients are fried at a temperature in the pot of around 200-230 ° C. Then, as shown in Step II, water and seasoning are added, and the broth is boiled and stabilized at a temperature in the pan of 100 ° C. When the water is exhausted as shown in Step III, scoring is detected by the infrared temperature detecting means 7. Thereafter, as shown in step (a) of step IV and step V, the output can be maintained by the control means 4 and the time measuring means 8 and the food temperature can be maintained without lowering.

また、例えば、（ｂ）のように高出力で加熱し続け焦げつき検知された場合、その後の出力を下げたものの、赤外線温度検知手段と時間測定手段により算出された温度低下の傾き値θが例えば０．５℃／秒しかなかった場合、出力値を変更しさらに出力を下げるといった、焦げつき検知後の出力を制御手段と時間測定手段により算出される温度低下の傾き値に応じて随時変更し、複数段階的に出力を変更して焦げつき緩和を狙うことも可能となる。   In addition, for example, when burning is detected while continuing heating at a high output as shown in (b), the slope value θ of the temperature decrease calculated by the infrared temperature detecting means and the time measuring means is, for example, although the subsequent output is lowered. If it was only 0.5 ° C / second, the output after changing the output value and further reducing the output, such as changing the output after burning detection, is changed as needed according to the slope value of the temperature drop calculated by the control means and the time measurement means, It is also possible to change the output in a plurality of stages and aim to reduce scorching.

以上のように、本実施の形態においては焦げつきと認識した後、前記制御手段により出力を複数段階的に変更することにより調理を続行しつつ、焦げつきすぎを防ぐことができる。   As described above, in this embodiment, after recognizing scorching, it is possible to prevent over scoring while continuing cooking by changing the output in a plurality of steps by the control means.

（実施の形態５）
図４は、本発明の第５の実施の形態の誘導加熱調理器の温度検知手段測定温度グラフを示すものであり、以下その動作、作用を説明する。 (Embodiment 5)
FIG. 4 shows a temperature detection means measurement temperature graph of the induction heating cooker according to the fifth embodiment of the present invention, and its operation and action will be described below.

フライパンで焼肉を調理する場合など、高温で乾燥加熱を行いつつ食材投入と取り出しを繰り返す料理は数多くある。それらの調理で図４に示すように調理が繰り返されている途中に焦げつき検知が行われた場合、本来なら（ａ）の時点で出力を停止させるか、出力
を低下させ、焦げすぎを防ぐ制御に変更される。しかし、調理によっては調理が続けられなくなると非常に都合が悪いものがある為、（ｂ）の時点から焦げつき検知後に出力を下げた結果、赤外線温度検知手段によって温度が例えばｃ−ｄ＝２０℃以上と認識された場合、出力を上げたり下げたりすることで調理を続行できるようにする。 There are many dishes that are repeatedly put in and out of ingredients while drying and heating at high temperatures, such as when cooking grilled meat in a frying pan. When burning is detected while cooking is being repeated as shown in FIG. 4, control is performed to stop the output at the time of (a) or to reduce the output to prevent overburning. Changed to However, since some cooking is very inconvenient if cooking cannot be continued, the output is lowered after the burning detection from the time point (b). As a result, the temperature is, for example, cd = 20 ° C. by the infrared temperature detection means. If it is recognized as above, cooking can be continued by increasing or decreasing the output.

以上のように、本実施の形態においては焦げつき検知を繰り返す仕様とすることにより調理を中断してしまうことなく行うことができる。   As described above, in the present embodiment, cooking can be performed without interruption by adopting a specification that repeats burning detection.

また、煮物調理においても焦げつき検知がなされた後、使用者がすぐに水分を追加し調理を続行した場合においても調理を続けることができ、且つその後また水分がなくなった場合も焦げつき検知を行うことができることで、失敗を防ぎつつ調理を行うことができる。   In addition, after burning is detected in boiled cooking, cooking can be continued even if the user immediately adds water and cooking continues, and after that, the burning is also detected when moisture is exhausted. It is possible to cook while preventing failure.

以上のように、本発明にかかる誘導加熱調理器は、赤外線温度検知手段で瞬時に焦げつきを検知し、出力を制御することができる為、調理の失敗を防ぐことができる。   As described above, the induction heating cooker according to the present invention can detect burnt instantaneously by the infrared temperature detection means and can control the output, so that the cooking failure can be prevented.

本発明の第１の実施の形態における誘導加熱調理器のブロック図The block diagram of the induction heating cooking appliance in the 1st Embodiment of this invention 本発明の第２の実施の形態における誘導加熱調理器のブロック図The block diagram of the induction heating cooking appliance in the 2nd Embodiment of this invention 本発明の第４の実施の形態における誘導加熱調理器の温度検知手段測定温度グラフTemperature detection means measurement temperature graph of induction heating cooker in the fourth embodiment of the present invention 本発明の第５の実施の形態における誘導加熱調理器の温度検知手段測定温度グラフTemperature detection means measurement temperature graph of induction heating cooker in the fifth embodiment of the present invention

１ 被加熱物
２ 誘導加熱コイル
３ インバータ
４ 制御手段
５ 操作部
６ トッププレート
７ 温度検知手段
８ 時間測定手段 DESCRIPTION OF SYMBOLS 1 To-be-heated object 2 Induction heating coil 3 Inverter 4 Control means 5 Operation part 6 Top plate 7 Temperature detection means 8 Time measurement means

Claims (2)

被加熱物を載置するトッププレートと、前記被加熱物を加熱する誘導加熱コイルと、前記誘導加熱コイルに高周波電流を供給するインバータと、使用者が火力設定を行う操作部と、前記被加熱物の温度を検知する赤外線温度検知手段と、時間をカウントする時間測定手段と、前記赤外線温度検知手段により沸騰を検知した後、前記赤外線温度検知手段による検知温度の上昇速度が設定値以上になった場合、焦げつきと認識し、前記インバータの出力を停止するあるいは火力を低下させる制御手段と、を備え、前記制御手段は、前記赤外線温度検知手段により沸騰を検知した後、前記赤外線温度検知手段による前記検知温度が焦げつき判定開始温度になった時から前記時間測定手段で時間のカウントを開始し、前記焦げつきを認識せず判定時間経過すると、前記インバータの出力を停止するあるいは火力を低下させるとともに、前記火力設定が大きいほど、前記判定開始温度を高くし、かつ前記判定時間を短くする誘導加熱調理器。 A top plate for placing the object to be heated, an induction heating coil for heating the object to be heated, an inverter for supplying a high-frequency current to the induction heating coil, an operation unit for setting a thermal power by a user, and the object to be heated After detecting the boiling by the infrared temperature detecting means for detecting the temperature of the object, the time measuring means for counting the time, and the infrared temperature detecting means, the rising speed of the temperature detected by the infrared temperature detecting means becomes a set value or more. A control means for recognizing scorching and stopping the output of the inverter or reducing the thermal power, and the control means detects the boiling by the infrared temperature detection means and then detects the boiling by the infrared temperature detection means. The time measuring means starts counting time from when the detected temperature reaches the burn determination start temperature, and the determination time without recognizing the burn When the over to, together with the lowering or thermal stops output of the inverter, as the heating power setting is large, the induction heating cooker increased the determination start temperature, and to shorten the determination time. 前記制御手段は、前記焦げつきと認識したことにより前記インバータの火力を低下させた後、前記赤外線温度検知手段による前記検知温度が前記焦げつきと認識した時の温度から所定温度以上低下した場合に、前記インバータの火力を上げる請求項１に記載の誘導加熱調理器。
The control means reduces the thermal power of the inverter by recognizing that it is burnt, and then, when the temperature detected by the infrared temperature detection means decreases by more than a predetermined temperature from the temperature when recognized as burned , The induction heating cooker of Claim 1 which raises the thermal power of an inverter.
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