JP2004095501A - High-frequency heating apparatus - Google Patents

High-frequency heating apparatus Download PDF

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Publication number
JP2004095501A
JP2004095501A JP2002258535A JP2002258535A JP2004095501A JP 2004095501 A JP2004095501 A JP 2004095501A JP 2002258535 A JP2002258535 A JP 2002258535A JP 2002258535 A JP2002258535 A JP 2002258535A JP 2004095501 A JP2004095501 A JP 2004095501A
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Japan
Prior art keywords
temperature
heated
heating
change amount
temperature change
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JP2002258535A
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Japanese (ja)
Inventor
Yuichi Ito
伊藤 友一
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2002258535A priority Critical patent/JP2004095501A/en
Publication of JP2004095501A publication Critical patent/JP2004095501A/en
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  • Control Of High-Frequency Heating Circuits (AREA)
  • Electric Ovens (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-frequency heating apparatus preventing overheat and making finishing temperature of food uniform in simple constitution. <P>SOLUTION: Temperature distribution of a heating product on a placing table during heating is detected with an infrared sensor, and heating is stopped when the heating product comes out of a visual field. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、食品などの被加熱物を加熱する高周波加熱装置に関し、被加熱物の温度を検知して被加熱物を効率的に加熱し、加熱分布の均一化をはかり、また加熱の自動化に関するものである。
【0002】
【従来の技術】
従来この種の高周波加熱装置は、赤外線の視野が固定されているので、被加熱物を指定された中央部に置き、赤外線センサにより加熱中の載置台上の被加熱物の温度分布を検出し、被加熱物が冷凍食品、冷蔵食品、常温食品かの識別を行い、それによって赤外線センサによる温度検知するまでのリミットタイムの設定、また、温度検知後の追加加熱を行うか、行わないかの決定し、被加熱物が温度検知すると、冷蔵食品、常温食品は加熱を終了し、冷凍食品は、温度検知後、低出力で追加加熱を実行する。また、被加熱物の識別がされた時に設定されたリッミトタイムまでに温度検知しなかった場合は、リミットタイムが経過した時点で加熱を終了する構成となっていた。
【0003】
【発明が解決しようとする課題】
しかしながら従来の高周波加熱装置では、被加熱物の温度を測定して、冷凍食品、冷蔵食品、常温食品の識別はできるが、被加熱物の種類、分量は識別できないので、識別した食品により標準的な調理時間の最大時間をリミットタイムと定めるので、被加熱物の種類、少量の場合、リミットタイムまで加熱すると過加熱になってしまう。そして、被加熱物の載置する載置台を回転させながら、被加熱物の温度を検出する為に、じゃがいも等の丸い形状のものは、載置台の回転により転がり、赤外線センサの視野外になる可能性がある。加熱途中で被加熱物が赤外線センサの視野外になると、赤外線センサが載置台の温度を監視することになり、被加熱物が加熱されていないと判断され、載置台が温度検知されまで加熱することになり、リミットタイムで加熱が停止するので過加熱になってしまうという課題を有していた。
【0004】
また、お弁当等の大きな形状のものを加熱する場合も同様である。、載置台に大きな形状の被加熱物を載置して回転すると、被加熱物が加熱室の壁にあたり載置台だけが回転するとこになり、赤外線センサの視野外になる可能性がある。これにより、被加熱物が加熱されていないと判断され、載置台が温度検知されまで加熱することになり、リミットタイムで加熱が停止するので過加熱になってしまうという課題を有していた。
【0005】
【課題を解決するための手段】
本発明は上記課題を解決するために、被加熱物を載置する載置台を回転させて、前記被加熱物の同じポイントを赤外線センサにより温度を検出し、載置台が1回転する毎に、前記温度検出手段によって前記被加熱物が存在すると判断したポイントの温度検出をし、温度変化量が減少した場合は、前記被加熱物が前記赤外線センサの視野外になったと判断して、加熱を停止させることで過加熱を防ぐことができる。
【0006】
【発明の実施の形態】
請求項1に記載の発明は、被加熱物が収納可能な加熱室と、前記加熱室に高周波電波を供給する高周波発生装置と、前記被加熱物からの赤外線エネルギーの放射を検出する赤外線センサにより前記被加熱物の温度を検出する温度検出手段と、前記温度検出手段によって検出した温度に基づき加熱シーケンス制御を実行する加熱シーケンス制御手段と、前記被加熱物を載置する載置台と、前記載置台を回転させる回転機構と、前記被加熱物の進行状況を表示する表示手段と、前記温度検出手段により前記被加熱物の温度変化量を検出する温度変化量検出手段と備え、前記温度変化量検出手段により温度変化量により異常だと判断した場合に、異なる加熱シーケンス制御を実行する構成としているため、加熱中に被加熱物が赤外線センサの視野外になると加熱を停止することにより過加熱を防ぐことができる。
【0007】
請求項2に記載の発明は、特に、請求項1に記載の高周波加熱装置の前記温度変化量検出手段は、複数回連続判定を実施する構成としているため、高周波発生装置によるノイズによる誤動作を防ぐことができる。
【0008】
請求項3に記載の発明は、特に、請求項1に記載の高周波加熱装置の前記温度変化量検出手段は、異常だと判定すると前記高周波発生装置を停止させ、再度、温度変化量を検出する構成としているため、2回目は、高周波発生装置が動作しないので、ノイズが発生しないので誤動作を防ぐことができる。
【0009】
請求項4に記載の発明は、特に、請求項1に記載の高周波加熱装置の前記温度変化量検出手段により、異常だと判定した場合、前記表示手段に、異常状態を前記表示手段に表示し、加熱を停止する構成としているため、使用者は、被加熱物を再度、載置台の中央部に載置しなおし加熱することで安定した仕上がりが得られる。
【0010】
【実施例】
以下、本発明の実施例について図面を用いて説明する。
【0011】
図1は本発明の実施例1を示す高周波加熱装置の外観構成図である。また図2は高周波加熱装置の要部断面構成図である。
【0012】
図1において、1は食品などの被加熱物であり加熱室2内の載置台3上に載置されている。載置台3は回転機構4により加熱室2内で一方向にのみ回転し、被加熱物1を回転させる構成である。高周波発生装置5は導波管6を介して加熱室2に結合し、給電開口部7から給電される構成となっている。導波管6の上部には温度検出手段である赤外線センサー8が設けられている。赤外線センサー8は加熱室2の壁面に設けられた開口部9を通過する被加熱物1からの赤外線を検知して被加熱物の温度を検出する。赤外線センサー8は載置台3の中央部からの赤外線を検出するように設けられている。制御手段10は被加熱物1の温度に基き加熱シーケンスを実行する加熱シーケンス制御手段、被加熱物1の温度変化量を検出する温度変化量検出手段からなり、赤外線センサー8からの信号からの信号をもとに高周波発生装置5及被加熱物1のの進行状況、お知らせ情報を表示する表示手段11を制御する。
【0013】
次に動作、作用について説明すると、赤外線センサー8の1個の検出素子の検出領域は図2において一点破線の丸印12で示す領域に設定している。検出領域12は載置台3の略中央領域に設定している。加熱が開始すると高周波発生装置5を動作させて給電開口部7を介して加熱室2内に高周波を供給する。また回転機構4の駆動モータを動作させて載置台3を回転させる。回転機構4の駆動モータは同期モータで構成しており、商用電源周波数が50Hzの場合、載置台3を一回転させるのに要する時間は10.4秒である。制御手段11は回転機構4に駆動電力を供給した時刻からの経過時間を計数するとともに0.52秒間隔で赤外線センサー8の検出信号を取り込む。この検出信号は現在温度を示す1個のレジスタ1に格納し、次の信号(すなわち0.52秒後)が入力されるまでその信号値を保持する。一方制御手段11は20列のレジスタ2を備えている。このレジスタ2は載置台3上のいわゆる温度分布データを格納するものである。回転機構4に電力が供給されると直ちにその時刻における赤外線センサー8の検出信号を取り込みレジスタ1に格納する。そして0.52秒経過後にはレジスタ1のデータをレジスタ2の第1列のレジスタに格納した後、赤外線センサー8の現時点での検出信号をレジスタ1に格納する。回転機構4の動作経過時間に伴い、随時検出信号がレジスタ2に格納され10.4秒経過すると載置台3上の全域の温度分布がレジスタ2の1列から20列に格納されることになる。制御手段11は次の10.4秒間に取り込んだ検出データをレジスタ2の21列から40列に格納する。その次の10.4秒間に取り込んだ検出データをレジスタ2の41列から60列に格納する。そして次の10.4秒間に取り込んだ検出データをレジスタ2の61列から80列に格納する。そして41.6秒以降の検出データは、10.4秒間で取り込んだデータをレジスタ2の列61から順次上書き格納すると同時に前回の10.4秒間で取り込んだ検出データをレジスタ2の41列から順次上書き格納する。これにより、列61から列80までの検出データの一回転前の検出データが列41から列61に格納される。制御手段11は、レジスタ2の1列から20列のデータと41列から60列のデータをそれぞれ比較し、既定した温度上昇、たとえば3℃、を超過する列には被加熱物1が存在すると判別する。この結果に基づいて載置台3上の複数の被加熱物の存在位置を判定する。なお、この判定処理中においても載置台3は連続的に回転を継続させているので制御手段11は赤外線センサー8から新たな信号を随時取り込んでいる。
【0014】
なお、被加熱物1の有無の判断方法として、レジスタ2の1列から20列のデータ(1回転目のデータ)と41列から60列のデータ(3回転目のデータ)をそれぞれ比較し、既定した温度上昇3℃を超過する列には被加熱物1が存在すると判別すると記載したが、1回転目と2回転目、または、1回転目と4回転目というように1回転目と何回転目の比較するかの判断と温度上昇値を何℃にするかは、柔軟に対応すればよいことは言うまでもない。
【0015】
つぎにレジスタ2の被加熱物1が存在すると判定した列の今回転の検出データと前回転の検出データと比較する。つまり、列61から列80までの検出データと列41から列60までの検出データを比較する。今回転の温度と前回転の温度との温度差を既定した温度差、たとえば−10℃と比較する。被加熱物1が存在する位置の今回転の温度と前回転の温度差を比較すると、加熱しているので温度差は上昇しているのが普通である。つまり、温度差がマイナスになることは普通ではありえない。温度差が−10℃以上の時は、被加熱物1の載置する載置台3を回転させながら、被加熱物1の温度を検出する為に、丸い形状の被加熱物1は、載置台3の回転により転がり、赤外線センサ−8の視野外に被加熱物1がある可能性、または、大きな形状の被加熱物1を載置して回転することで被加熱物1が加熱室2の壁にあたり載置台3だけが回転するとこになり、赤外線センサ−8の視野外に被加熱物1がある可能性がある。すなわち、被加熱物1が赤外線センサー8の視野外にあるので、加熱を停止させ、表示手段11に、被加熱物1を載置台3の中央部に載置されていない可能性があると表示することで、加熱しても赤外線センサー8で検出する温度が終了検知温度に全然達しないで過加熱になってしまうという課題が解消される。
【0016】
また、高周波を供給した状態で、赤外線センサー8で信号を取り込んでいるので高周波による影響で検出データが正常でないデータになる可能もあるので、今回転の温度と前回転の温度との温度差が−10℃以上と直ぐに加熱停止するのでなく、既定した回数、例えば2回連続して今回転の温度と前回転の温度との温度差が−10℃以上だと加熱停止させ、表示手段11に、被加熱物1を載置台3の中央部に載置されていない可能性があると表示することで、より正確に、赤外線センサー8の視野外に被加熱物1があると判断でき、加熱しても赤外線センサー8で検出する温度が終了検知温度に全然達しないで過加熱になってしまうという課題が解消される。
【0017】
また、もうひとつの高周波を供給した状態で、赤外線センサー8で信号を取り込んでいるので高周波による影響で検出データが正常でないデータにならなく、赤外線センサー8の視野外に被加熱物1があるという判断を素早くする方法として、今回転の温度と前回転の温度との温度差が−10℃以上と直ぐに加熱停止するのでなく、温度差が−10℃以上と判断すると、高周波発生装置5と回転機構4を停止させて、再度、赤外線センサー8で信号を取り込み堅守データと前回転の温度との温度差が−10℃以上だと加熱停止させ、表示手段11に、被加熱物1を載置台3の中央部に載置されていない可能性があると表示することで、より正確に、赤外線センサー8の視野外に被加熱物1があると判断でき、加熱しても赤外線センサー8で検出する温度が終了検知温度に全然達しないで過加熱になってしまうという課題が解消される。
【0018】
なお、本発明では前記被加熱物1の温度を検出する赤外線センサー8は赤外線を検出する素子は1個のものについて説明したが1個に限定するものでなく載置台の大きさ等から最適な個数の素子を選択すればよいことは言うまでもない。
【0019】
【発明の効果】
以上のように、本発明によれば、使用者がどんな形状の被加熱物を加熱しても、赤外線センサーだけのセンサーを使用しても、誤動作することなく、過加熱されずに安定した加熱仕上がり結果が得られる。
【図面の簡単な説明】
【図1】本発明の高周波加熱装置の外観構成図
【図2】本発明の高周波加熱装置の要部断面図
【符号の説明】
1 被加熱物
2 加熱室
3 載置台
4 回転機構
5 高周波発生装置
6 導波管
7 給電開口部
8 赤外線センサー
9 開口部
10 制御手段
11 表示手段
12 赤外線センサの検出領域
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a high-frequency heating device for heating an object to be heated, such as food, and relates to a method for efficiently heating an object to be heated by detecting the temperature of the object to be heated, uniforming a heating distribution, and also relating to automation of heating. Things.
[0002]
[Prior art]
Conventionally, this type of high-frequency heating device has a fixed infrared field of view, so the object to be heated is placed at a designated center, and the infrared sensor detects the temperature distribution of the object on the mounting table being heated. Identify whether the object to be heated is frozen food, refrigerated food, or normal-temperature food, set a limit time until the temperature is detected by the infrared sensor, and whether to perform additional heating after temperature detection. When the temperature of the object to be heated is determined, the heating of the refrigerated food and the normal temperature food is terminated, and the additional heating of the frozen food is performed at a low output after the temperature detection. Further, if the temperature is not detected by the set limit time when the object to be heated is identified, the heating is terminated when the limit time has elapsed.
[0003]
[Problems to be solved by the invention]
However, with a conventional high-frequency heating device, the temperature of the heated object can be measured and the frozen food, the refrigerated food, and the normal temperature food can be identified, but the type and amount of the heated object cannot be identified. Since the maximum cooking time is determined as the limit time, if the type of the object to be heated is small and the amount is small, heating to the limit time results in overheating. In order to detect the temperature of the object to be heated while rotating the mounting table for mounting the object to be heated, a round shape such as a potato rolls due to the rotation of the mounting table and goes out of the field of view of the infrared sensor. there is a possibility. If the object to be heated goes out of the field of view of the infrared sensor during heating, the infrared sensor monitors the temperature of the mounting table, it is determined that the object to be heated is not heated, and the mounting table is heated until the temperature is detected. As a result, there is a problem that overheating occurs because heating is stopped in the limit time.
[0004]
The same applies to the case of heating a large shape such as a lunch box. When a large object to be heated is placed on the mounting table and rotated, the object to be heated hits the wall of the heating chamber and only the mounting table rotates, which may cause the infrared sensor to be out of the field of view. As a result, it is determined that the object to be heated is not heated, and the mounting table is heated until the temperature is detected, and the heating is stopped in the limit time, resulting in a problem of overheating.
[0005]
[Means for Solving the Problems]
The present invention, in order to solve the above problems, by rotating the mounting table for mounting the object to be heated, by detecting the temperature of the same point of the object to be heated by an infrared sensor, every time the mounting table rotates once, The temperature detection unit detects the temperature of the point at which it is determined that the object to be heated is present, and when the temperature change amount decreases, it is determined that the object to be heated is out of the field of view of the infrared sensor, and heating is performed. By stopping, overheating can be prevented.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 includes a heating chamber capable of storing an object to be heated, a high-frequency generator that supplies a high-frequency electric wave to the heating chamber, and an infrared sensor that detects radiation of infrared energy from the object to be heated. Temperature detection means for detecting the temperature of the object to be heated, heating sequence control means for performing heating sequence control based on the temperature detected by the temperature detection means, a mounting table for mounting the object to be heated, A rotation mechanism for rotating the mounting table, display means for displaying the progress of the object to be heated, temperature change amount detection means for detecting the temperature change amount of the object to be heated by the temperature detection means, and the temperature change amount Different heating sequence control is performed when the detection means determines that the temperature change is abnormal, so that the object to be heated is out of the field of view of the infrared sensor during heating. The heating can prevent overheating by stopping.
[0007]
In the invention according to claim 2, the temperature change amount detection means of the high-frequency heating device according to claim 1 is configured to perform the continuous determination a plurality of times, so that malfunction due to noise by the high-frequency generation device is prevented. be able to.
[0008]
According to a third aspect of the present invention, in particular, the temperature change amount detecting means of the high frequency heating device according to the first aspect stops the high frequency generation device when it judges that the temperature change amount is abnormal, and detects the temperature change amount again. In the second configuration, since the high-frequency generator does not operate for the second time, no noise is generated, so that malfunction can be prevented.
[0009]
The invention according to claim 4 is that, when it is determined by the temperature change amount detecting means of the high-frequency heating device according to claim 1 that the temperature change amount is abnormal, an abnormal state is displayed on the display means. Since the heating is stopped, the user can place the object to be heated again in the center of the mounting table and heat the object again, thereby obtaining a stable finish.
[0010]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0011]
FIG. 1 is an external configuration diagram of a high-frequency heating device according to a first embodiment of the present invention. FIG. 2 is a sectional view of a main part of the high-frequency heating device.
[0012]
In FIG. 1, reference numeral 1 denotes an object to be heated such as food, which is mounted on a mounting table 3 in a heating chamber 2. The mounting table 3 is configured to rotate only in one direction in the heating chamber 2 by the rotation mechanism 4 to rotate the object 1 to be heated. The high-frequency generator 5 is coupled to the heating chamber 2 via the waveguide 6 and is supplied with power from the power supply opening 7. Above the waveguide 6, an infrared sensor 8 as a temperature detecting means is provided. The infrared sensor 8 detects infrared rays from the heated object 1 passing through the opening 9 provided on the wall surface of the heating chamber 2 to detect the temperature of the heated object. The infrared sensor 8 is provided to detect infrared rays from the center of the mounting table 3. The control means 10 includes a heating sequence control means for executing a heating sequence based on the temperature of the object 1 to be heated, and a temperature change detecting means for detecting a temperature change amount of the object 1 to be heated, and a signal from a signal from the infrared sensor 8. The display means 11 for displaying the progress of the high-frequency generator 5 and the object to be heated 1 and the notification information is controlled based on the information.
[0013]
Next, the operation and operation will be described. The detection area of one detection element of the infrared sensor 8 is set to the area indicated by the dot-dashed circle 12 in FIG. The detection area 12 is set in a substantially central area of the mounting table 3. When heating is started, the high frequency generator 5 is operated to supply high frequency into the heating chamber 2 through the power supply opening 7. The mounting table 3 is rotated by operating the drive motor of the rotation mechanism 4. The drive motor of the rotating mechanism 4 is a synchronous motor. When the commercial power frequency is 50 Hz, the time required for rotating the mounting table 3 once is 10.4 seconds. The control means 11 counts the elapsed time from the time when the driving power is supplied to the rotation mechanism 4 and takes in the detection signal of the infrared sensor 8 at intervals of 0.52 seconds. This detection signal is stored in one register 1 indicating the current temperature, and the signal value is held until the next signal (that is, 0.52 seconds later) is input. On the other hand, the control means 11 has 20 columns of registers 2. The register 2 stores so-called temperature distribution data on the mounting table 3. As soon as power is supplied to the rotation mechanism 4, the detection signal of the infrared sensor 8 at that time is taken in and stored in the register 1. After a lapse of 0.52 seconds, the data of the register 1 is stored in the register in the first column of the register 2, and then the current detection signal of the infrared sensor 8 is stored in the register 1. Along with the operation elapsed time of the rotation mechanism 4, the detection signal is stored in the register 2 as needed, and after 10.4 seconds elapses, the temperature distribution of the entire area on the mounting table 3 is stored in 1 to 20 columns of the register 2. . The control means 11 stores the detected data taken in the next 10.4 seconds in the 21st to 40th columns of the register 2. The detection data fetched during the next 10.4 seconds is stored in the register 2 from the 41st column to the 60th column. Then, the detection data taken in the next 10.4 seconds is stored in the 61st column to the 80th column of the register 2. As for the detection data after 41.6 seconds, the data fetched in 10.4 seconds is sequentially overwritten and stored from the column 61 of the register 2 and at the same time, the detection data fetched in the previous 10.4 seconds is sequentially stored from the 41 column of the register 2 Overwrite and store. Thereby, the detection data of one rotation before the detection data of columns 61 to 80 is stored in columns 41 to 61. The control means 11 compares the data in columns 1 to 20 of the register 2 with the data in columns 41 to 60, and determines that the object 1 to be heated is present in a row exceeding a predetermined temperature rise, for example, 3 ° C. Determine. Based on this result, the positions of the plurality of objects to be heated on the mounting table 3 are determined. During the determination process, the mounting table 3 keeps rotating continuously, so that the control means 11 takes in a new signal from the infrared sensor 8 as needed.
[0014]
As a method of determining the presence or absence of the object 1 to be heated, the data of the first to 20th columns (data of the first rotation) and the data of the 41st to 60th columns (data of the third rotation) of the register 2 are compared, respectively. Although it is described that the object to be heated 1 is determined to be present in a row exceeding the predetermined temperature rise of 3 ° C., the first rotation and the second rotation, or the first rotation and the fourth rotation and so on. Needless to say, it is only necessary to flexibly determine whether to compare the rotations and what the temperature rise value should be.
[0015]
Next, the detection data of the current rotation and the detection data of the previous rotation in the row of the register 2 in which it is determined that the object to be heated 1 is present are compared. That is, the detection data in columns 61 to 80 and the detection data in columns 41 to 60 are compared. The temperature difference between the current rotation temperature and the previous rotation temperature is compared with a predetermined temperature difference, for example, −10 ° C. Comparing the difference between the temperature of the current rotation and the temperature of the previous rotation at the position where the article 1 to be heated is present, it is normal that the temperature difference increases because of the heating. That is, it is not normal that the temperature difference becomes negative. When the temperature difference is −10 ° C. or more, the round heating target 1 is mounted on the mounting table 3 in order to detect the temperature of the heating target 1 while rotating the mounting table 3 on which the heating target 1 is mounted. 3, the object to be heated 1 may be outside the field of view of the infrared sensor 8, or the object to be heated 1 may be placed in the heating chamber 2 by placing and rotating the object to be heated 1 having a large shape. When the mounting table 3 alone rotates against the wall, the object 1 to be heated may be outside the field of view of the infrared sensor 8. That is, since the object to be heated 1 is out of the field of view of the infrared sensor 8, the heating is stopped, and the display means 11 indicates that there is a possibility that the object to be heated 1 is not placed at the center of the mounting table 3. By doing so, the problem that the temperature detected by the infrared sensor 8 does not reach the end detection temperature at all even though the heating is performed, and the problem of overheating is solved.
[0016]
Further, since a signal is captured by the infrared sensor 8 in a state where the high frequency is supplied, the detection data may be abnormal data due to the influence of the high frequency. Therefore, the temperature difference between the temperature of the current rotation and the temperature of the previous rotation may be different. Instead of immediately stopping the heating at -10 ° C or higher, the heating is stopped when the temperature difference between the current rotation temperature and the previous rotation temperature is -10 ° C or higher for a predetermined number of times, for example, two times in succession. By displaying that there is a possibility that the object to be heated 1 is not placed at the center of the mounting table 3, it is possible to more accurately determine that the object to be heated 1 is outside the field of view of the infrared sensor 8, Even if the temperature detected by the infrared sensor 8 does not reach the end detection temperature at all, the problem of overheating is solved.
[0017]
In addition, the signal is captured by the infrared sensor 8 in a state where another high frequency is supplied, so that the detection data does not become abnormal data due to the influence of the high frequency, and the object to be heated 1 is outside the field of view of the infrared sensor 8. As a method for making a quick decision, instead of immediately stopping the heating when the temperature difference between the current rotation temperature and the previous rotation temperature is -10 ° C or more, if the temperature difference is determined to be -10 ° C or more, the high-frequency generator 5 When the mechanism 4 is stopped, the signal is again captured by the infrared sensor 8 and the temperature is stopped when the temperature difference between the adherence data and the temperature of the pre-rotation is -10 ° C. or more. By displaying that there is a possibility that the object 1 is not placed at the center of the object 3, it is possible to more accurately determine that the object to be heated 1 is out of the field of view of the infrared sensor 8, and even if heated, the object 1 is detected by the infrared sensor 8. Problem temperature which becomes overheated without at all reach the end detection temperature is eliminated.
[0018]
In the present invention, the infrared sensor 8 for detecting the temperature of the object to be heated 1 has been described as having one element for detecting infrared rays. However, the number of elements is not limited to one, but the optimum one is determined from the size of the mounting table. Needless to say, it is sufficient to select the number of elements.
[0019]
【The invention's effect】
As described above, according to the present invention, even if the user heats an object to be heated in any shape, even if a sensor using only an infrared sensor is used, a stable operation without overheating is performed without malfunction. Finished results are obtained.
[Brief description of the drawings]
FIG. 1 is an external configuration diagram of a high-frequency heating device of the present invention. FIG. 2 is a cross-sectional view of a main part of the high-frequency heating device of the present invention.
REFERENCE SIGNS LIST 1 heated object 2 heating chamber 3 mounting table 4 rotating mechanism 5 high-frequency generator 6 waveguide 7 feeding opening 8 infrared sensor 9 opening 10 control means 11 display means 12 detection area of infrared sensor

Claims (4)

被加熱物が収納可能な加熱室と、前記加熱室に高周波電波を供給する高周波発生装置と、前記被加熱物からの赤外線エネルギーの放射を検出する赤外線センサにより前記被加熱物の温度を検出する温度検出手段と、前記温度検出手段によって検出した温度に基づき加熱シーケンス制御を実行する加熱シーケンス制御手段と、前記被加熱物を載置する載置台と、前記載置台を回転させる回転機構と、前記被加熱物の進行状況を表示する表示手段と、前記温度検出手段により前記被加熱物の温度変化量を検出する温度変化量検出手段と備え、前記温度変化量検出手段により温度変化量により異常だと判断した場合に、異なる加熱シーケンス制御を実行する構成とした高周波加熱装置。The temperature of the object to be heated is detected by a heating chamber capable of storing the object to be heated, a high-frequency generator for supplying high-frequency radio waves to the heating chamber, and an infrared sensor that detects the emission of infrared energy from the object to be heated. A temperature detection unit, a heating sequence control unit that executes a heating sequence control based on the temperature detected by the temperature detection unit, a mounting table on which the object to be heated is mounted, a rotation mechanism configured to rotate the mounting table, Display means for displaying the progress of the object to be heated; temperature change amount detection means for detecting the temperature change amount of the object to be heated by the temperature detection means; and the temperature change amount detection means is abnormal due to the temperature change amount. A high-frequency heating device configured to execute different heating sequence control when it is determined that 温度変化量検出手段は、複数回連続判定を実施する構成とした請求項1記載の高周波加熱装置。The high-frequency heating device according to claim 1, wherein the temperature change amount detecting means is configured to perform the continuous determination a plurality of times. 温度変化量検出手段は、異常だと判定すると前記高周波発生装置を停止させ、再度、温度変化量を検出する構成とした請求項1記載の高周波加熱装置。2. The high-frequency heating device according to claim 1, wherein the temperature change amount detection means is configured to stop the high-frequency generation device when the temperature change amount is determined to be abnormal, and to detect the temperature change amount again. 温度変化量検出手段により、異常だと判定した場合、異常状態を表示手段に表示し、加熱を停止する構成とした請求項1記載の高周波加熱装置。2. The high-frequency heating apparatus according to claim 1, wherein when the temperature change amount detecting means determines that the temperature is abnormal, the abnormal state is displayed on the display means and heating is stopped.
JP2002258535A 2002-09-04 2002-09-04 High-frequency heating apparatus Pending JP2004095501A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102318439A (en) * 2009-02-24 2012-01-11 松下电器产业株式会社 Microwave oven
JP5213199B1 (en) * 2012-11-14 2013-06-19 マイクロ波化学株式会社 Information processing apparatus, information processing method, and program

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102318439A (en) * 2009-02-24 2012-01-11 松下电器产业株式会社 Microwave oven
JP5213199B1 (en) * 2012-11-14 2013-06-19 マイクロ波化学株式会社 Information processing apparatus, information processing method, and program
WO2014077263A1 (en) * 2012-11-14 2014-05-22 マイクロ波化学株式会社 Information processing device, information processing method, and program
CN104284716A (en) * 2012-11-14 2015-01-14 微波化学有限公司 Information processing device, information processing method, and program
US9258851B2 (en) 2012-11-14 2016-02-09 Microwave Chemical Co., Ltd. Information processing apparatus, information processing method, and program

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