JP3427818B2

JP3427818B2 - High frequency heating equipment

Info

Publication number: JP3427818B2
Application number: JP2000114775A
Authority: JP
Inventors: 豪伊藤
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2000-04-17
Filing date: 2000-04-17
Publication date: 2003-07-22
Anticipated expiration: 2020-04-17
Also published as: JP2001297872A

Description

【発明の詳細な説明】【０００１】【発明の属する技術分野】本発明は、マイクロコンピュ
ータを有する高周波加熱装置に関し、特に構成部品の冷
却に関するものである。【０００２】【従来の技術】従来の高周波加熱装置、いわゆる一般的
なオーブン機能付き電子レンジにおいては、オーブン調
理を行うと、加熱調理室内の温度が高くなると共に、調
理器本体内に設けた各種の部品の温度も高くなる。これ
に対して、従来より、各種部品を冷却する冷却ファンを
設け、調理終了時に冷却ファンにより各種部品を冷却し
ている。【０００３】その第１は、調理終了後に加熱室の温度を
判定し、設定したある一つの温度以上の時は冷却ファン
を一定の強度で一定時間駆動して各種部品を冷却する方
法である。【０００４】例えば、調理終了時に加熱室の温度が１０
０℃以上の時に冷却ファンを中回転（ファンの強度に段
階を持たせている）で一定時間駆動する方法である。【０００５】その第２は、オーブン調理時に設定した加
熱室内の温度に応じて、冷却時間を決定し、決定した冷
却時間だけ一定の強度で冷却ファンを駆動する方法であ
る。【０００６】【発明が解決しようとする課題】しかしながら、従来の
制御方法では、次のような問題を有していた。例えば第
一の方法では調理終了時の温度が１０１℃の時も２００
℃の時も各種部品の温度の上がり具合が違うにも関わら
ず一定の強度でしか冷却ファンが駆動しないため、１０
１℃の時は十分すぎるほど冷却している、あるいは２０
０℃の時は冷却が十分ではないといったことが生じるこ
とがある。【０００７】また、第２の方法ではオーブン調理をしよ
うと思って加熱室内の温度を設定してスタートした後に
何らかの理由ですぐに取消がなされた場合でも、設定さ
れていた温度に応じて一定時間冷却ファンが駆動してし
まう。【０００８】このように冷却的にも効率性が悪く、また
それに伴い消費する電力面からも効率が悪かった。ま
た、騒音の面からも優れているとは言えないという問題
を有していた。【０００９】本発明は、前記従来の課題を解決するもの
で、加熱終了後温度検出装置の検出した温度にもとづい
て適温に冷却することを目的とする。【００１０】【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、冷却ファンを制御する複数のシーケンス制
御を備えることにより、調理終了直後の調理器本体内が
まだ熱いときは強い強度で冷却ファンを駆動させ、その
後弱い強度に落として冷却ファンを駆動させることを可
能とした。また、それぞれの強度で駆動させる時間につ
いても変更可能とした。さらには複数の温度判定手段を
備え、複数の冷却ファン制御手段と制御を組み合わせる
ことができる構成とした。【００１１】上記発明によれば、従来よりも調理終了時
の調理器本体内の状態に合わせた、より最適できめ細か
な冷却制御を実現できるとともに、冷却効率も高め、節
電、騒音においても改善を図ることができる。【００１２】【発明の実施の形態】本発明は、加熱室へ高周波電力を
供給する高周波発振器と、食品を加熱する加熱装置と、
加熱室内の温度を検出する温度検出装置と、前記温度検
出装置を含め調理器本体内に設けた各種の部品を冷却す
る冷却ファンと制御手段とを有し、前記制御手段は前記
加熱室内の温度に応じて前記冷却ファンを駆動する複数
のシーケンス制御を有し、騒音において改善を図るべ
く、前記制御手段は、調理終了直後の調理器本体内がま
だ熱いときは強い強度で前記冷却ファンを駆動させ、そ
の後弱い強度に落として前記冷却ファンを駆動させ、ま
た、それぞれの強度で駆動させる時間についても変更可
能とし、前記加熱室内がまだ熱い時間帯は強い強度で前
記冷却ファンを回し、その後加熱室内が少し冷えてきた
時間帯は前記冷却ファンの強度を落とすシーケンス制御
を行う構成とした。【００１３】上記発明によれば、従来よりも調理終了時
の調理器本体内の状態に合わせた、より最適できめ細か
な冷却制御を実現できるとともに、冷却効率も高め、節
電、騒音においても改善を図ることができる。【００１４】【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。【００１５】（実施例１）図１は、本発明の高周波加熱装置の構成図である。【００１６】高周波電力を加熱室に供給する高周波発振
器１と、加熱室に熱を放射する加熱装置２と、加熱室内
の温度を検出する温度検出装置３と、調理器本体内に設
けた各種の部品を冷却する冷却ファン４とをマイクロコ
ンピュータ５に接続し、冷却ファンをシーケンス制御す
る制御手段６と、温度判定手段７とにより冷却ファン４
の制御をしている。【００１７】図２は本発明の高周波加熱装置のシーケン
ス制御を示す図である。【００１８】例えば、調理終了後の冷却ファン４のステ
ージ時間と冷却ファン４の強度をそれぞれＴ１時間で強
回転、（ａ）時間で微回転、Ｔ２時間で強回転、（ｂ）
時間で弱回転、Ｔ３時間で中回転、（ｃ）時間で弱回転
といった制御とする。また、ステージ時間、冷却ファン
４の強度、それぞれの組合せについては複数設定できる
ことを可能とする。したがって、ステージ時間や冷却フ
ァン４の強度、さらに組合せが複数設定できることによ
り、例えばヒーターのような加熱装置２を用いた時の調
理終了直後は、調理器内が非常に高温になっているの
で、調理器内がまだ熱い時間帯Ｔ１、Ｔ２、Ｔ３といっ
た時間帯は強い強度で冷却ファン４を回し、その後調理
器内が少し冷えてきた（ａ）、（ｂ）、（ｃ）といった
時間帯は冷却ファン４の強度を落とすというようなシー
ケンス制御を行うことができる。【００１９】また、調理器内の温度がさほど上がらない
高周波発振器１を使用した高周波加熱の時の調理終了後
は、Ｔ１、Ｔ２、Ｔ３、（ａ）、（ｂ）、（ｃ）の時間
は短めに、そして冷却ファン４の強度は弱めに設定する
ことができる。場合によってはすべてＯＦＦに設定する
こともできる。【００２０】このように冷却ファンを複数のシーケンス
制御で制御する制御手段６を有している。【００２１】さらに、例えば、Ｔｅｍｐ０、Ｔｅｍｐ
１、Ｔｅｍｐ２は温度判定に用いるしきい値で、調理終
了後温度検出装置３によって検出された加熱室内の温度
がＴｅｍｐ０以上Ｔｅｍｐ１未満の時を温度帯、同じ
ようにＴｅｍｐ１以上Ｔｅｍｐ２未満の時を温度帯、
Ｔｅｍｐ２以上の時を温度帯とすると（調理終了後Ｔ
ｅｍｐ０未満の時は冷却ファン制御はＯＦＦとする）、
温度帯で調理終了したときはＴ１時間で強回転、その
後（ａ）時間で微回転、あるいは温度帯で調理終了し
たときはＴ２時間で強回転、その後（ｂ）時間で弱回
転、あるいは温度帯で調理終了したときはＴ３時間で
中回転、その後（ｃ）時間で弱回転といった具合に冷却
ファンを複数のシーケンス制御で制御する制御手段６
と、複数の温度判定手段７との制御を組み合わせて数多
くの冷却制御を構築することができる。【００２２】（実施例２）図３は、本発明のフローチャートである。【００２３】なお、図３は冷却ファンを複数のシーケン
ス制御で制御する制御手段６と複数の温度判定手段７を
組み合わせたときのもので実施例１と同一符号のもの
は、同一構造を有し、説明は省略する。【００２４】図において、マイクロコンピュータ５はス
テップＳ１にて、温度検出装置３から得られた温度がＴ
ｅｍｐ２未満かどうかを判断し、Ｔｅｍｐ２未満でない
と判断すると、ステップＳ２、ステップＳ３に移行し、
Ｔ１時間、（ａ）時間でそれぞれ設定された冷却ファン
４の強度で制御を行う。【００２５】また、ステップ１にて、Ｔｅｍｐ２未満と
判断された時は、ステップ４に移行し、温度検出装置３
から得られた温度がＴｅｍｐ１未満かどうかを判断し、
Ｔｅｍｐ１未満でないと判断されたときは、ステップ
５、ステップ６に移行し、Ｔ２時間、（ｂ）時間でそれ
ぞれ設定された冷却ファン４の強度で制御を行う。【００２６】また、ステップ４にて、Ｔｅｍｐ１未満と
判断された時は、ステップ７に移行し、温度検出装置３
から得られた温度がＴｅｍｐ０未満かどうかを判断し、
Ｔｅｍｐ０未満でないと判断されたときは、ステップ
８、ステップ９に移行し、Ｔ３時間、（ｃ）時間でそれ
ぞれ設定された冷却ファン４の強度で制御を行う。【００２７】また、ステップ７にて、Ｔｅｍｐ０未満と
判断された時は、ステップ１０に移行し、冷却ファン４
の制御はＯＦＦする。【００２８】なお、このステップは一実施例のため、ス
テップＳ１、Ｓ４、Ｓ７の判断は順不同でも可能で、判
断基準も含めプラグラムが容易な方式にすればよい。場
合によっては、判断が不要になる事もありうる。【００２９】【発明の効果】以上のように、本発明によれば次のよう
な効果が得られる。【００３０】冷却ファンを複数のシーケンス制御で制御
し、騒音において改善を図るべく、前記制御手段は、調
理終了直後の調理器本体内がまだ熱いときは強い強度で
前記冷却ファンを駆動させ、その後弱い強度に落として
前記冷却ファンを駆動させ、また、それぞれの強度で駆
動させる時間についても変更可能とし、前記加熱室内が
まだ熱い時間帯は強い強度で前記冷却ファンを回し、そ
の後加熱室内が少し冷えてきた時間帯は前記冷却ファン
の強度を落とすシーケンス制御を行う制御手段により、
その時の調理終了時の加熱室内の温度、あるいはメニュ
ーに合わせた最適できめ細かな冷却シーケンス制御を構
築することが可能となり、且つ、冷却効率を高め、騒音
や消費電力の低減を図ることができる。【００３１】また、冷却ファンの制御手段と複数の温度
判定手段との組合せの制御により、冷却ファンの制御手
段のみのときよりも、より調理終了後の状態に合わせた
最適できめ細かな冷却シーケンス制御を構築することが
可能となり、且つ、冷却効率を高め、騒音や消費電力の
低減を図ることができる。さらにマイクロコンピュータ
５内の制御手段により冷却制御を構築できるので、冷却
制御を構築するにあたり、その他部品を追加する必要が
ないのでコスト的にも安価で済む。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency heating device having a microcomputer, and more particularly to cooling of components. 2. Description of the Related Art In a conventional high-frequency heating apparatus, a so-called general microwave oven having an oven function, when oven cooking is performed, the temperature in a heating cooking chamber increases and various kinds of microwaves provided in a cooking device main body are increased. The temperature of the parts also increases. On the other hand, conventionally, a cooling fan for cooling various components is provided, and various components are cooled by the cooling fan at the end of cooking. [0003] The first is a method in which the temperature of a heating chamber is determined after cooking is completed, and when the temperature is equal to or higher than a predetermined temperature, a cooling fan is driven at a constant intensity for a predetermined time to cool various components. [0004] For example, at the end of cooking, the temperature of the heating chamber becomes 10
When the temperature is 0 ° C. or higher, the cooling fan is driven for a certain period of time at a medium speed (the intensity of the fan has a step). [0005] A second method is to determine a cooling time in accordance with the temperature in the heating chamber set at the time of oven cooking, and to drive the cooling fan with a constant intensity for the determined cooling time. [0006] However, the conventional control method has the following problems. For example, in the first method, even when the temperature at the end of cooking is 101 ° C., 200
Even at ℃, the cooling fan is driven only at a constant intensity despite the rise in the temperature of various parts.
At 1 ° C, it is too cool, or 20
At 0 ° C., cooling may not be sufficient. [0007] In the second method, even if the temperature is set in the heating chamber to start the oven cooking and then immediately canceled for some reason after the start, the fixed time is set according to the set temperature. The cooling fan runs. As described above, the cooling efficiency is low, and the power consumption associated therewith is low. In addition, it has a problem that it cannot be said to be excellent in terms of noise. An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to cool to an appropriate temperature based on a temperature detected by a temperature detecting device after the completion of heating. [0010] In order to solve the above-mentioned problems, the present invention includes a plurality of sequence controls for controlling a cooling fan. It is possible to drive the cooling fan at a high intensity and then to lower the intensity to drive the cooling fan. In addition, the driving time at each intensity can be changed. Further, a configuration is provided in which a plurality of temperature determination means are provided, and a plurality of cooling fan control means and control can be combined. According to the present invention, it is possible to realize more optimal and detailed cooling control in accordance with the state in the cooking device body at the end of cooking than before, to enhance the cooling efficiency, and to improve power saving and noise. Can be planned. [0012] The present invention relates to a high-frequency oscillator for supplying high-frequency power to a heating chamber, a heating device for heating food,
A temperature detecting device for detecting a temperature in the heating chamber, a cooling fan for cooling various components provided in the cooking device main body including the temperature detecting device, and a control unit; and the control unit includes:
It has a plurality of sequence control for driving the cooling fan according to the temperature of the heating chamber, improve the noise
In addition, the control means is capable of heating the inside of the cooker body immediately after the completion of cooking.
When it is hot, drive the cooling fan with strong intensity to
After that, reduce the intensity to a low level and drive the cooling fan to
In addition, the time to drive at each intensity can be changed
No, and when the heating chamber is still hot, the
Turn the cooling fan, then the heating room cools down a little
Sequence control to reduce the intensity of the cooling fan during the time period
Is performed . According to the above-mentioned invention, it is possible to realize more optimal and detailed cooling control in accordance with the state in the cooking device main body at the end of cooking than before, to enhance the cooling efficiency, and to improve the power saving and the noise. Can be planned. Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a configuration diagram of a high-frequency heating apparatus according to the present invention. A high-frequency oscillator 1 for supplying high-frequency power to the heating chamber, a heating device 2 for radiating heat to the heating chamber, a temperature detection device 3 for detecting a temperature in the heating chamber, and various types of components provided in the cooking device main body. A cooling fan 4 for cooling the components is connected to a microcomputer 5, and a control means 6 for controlling the sequence of the cooling fan and a temperature judging means 7 for controlling the cooling fan 4.
Control. FIG. 2 is a diagram showing sequence control of the high-frequency heating device of the present invention. For example, the stage time of the cooling fan 4 after the completion of cooking and the intensity of the cooling fan 4 are respectively strongly rotated at time T1, finely rotated at time (a), and strongly rotated at time T2, and (b).
The control is such that the time is weak rotation, the time T3 is medium rotation, and the time (c) is weak rotation. Further, it is possible to set a plurality of stage times, the strength of the cooling fan 4, and each combination. Therefore, since the stage time, the strength of the cooling fan 4, and a plurality of combinations can be set, the inside of the cooking device becomes extremely hot immediately after the end of cooking when the heating device 2 such as a heater is used. During the time period when the inside of the cooker is still hot, such as T1, T2, and T3, the cooling fan 4 is turned with a high intensity, and then the time period when the inside of the cooker is slightly cooled (a), (b), (c) is Sequence control such as reducing the strength of the cooling fan 4 can be performed. After the end of cooking at the time of high-frequency heating using the high-frequency oscillator 1 in which the temperature in the cooker does not rise so much, the times T1, T2, T3, (a), (b) and (c) are The length of the cooling fan 4 can be set shorter, and the strength of the cooling fan 4 can be set lower. In some cases, all of them can be set to OFF. Thus, the control means 6 for controlling the cooling fan by a plurality of sequence controls is provided. Further, for example, Temp0, Temp
1, Temp2 is a threshold used for temperature determination, and the temperature zone is when the temperature in the heating chamber detected by the temperature detection device 3 after the cooking is finished is not less than Temp0 and less than Temp1, and similarly is the temperature when it is not less than Temp1 and less than Temp2. band,
When the temperature zone is equal to or higher than Temp2 (T
When it is less than emp0, the cooling fan control is turned off.)
When cooking is completed in the temperature zone, strong rotation in T1 time, then fine rotation in (a) time, or when cooking is completed in the temperature zone, strong rotation in T2 time, and then weak rotation in (b) time, or temperature zone Control means 6 for controlling the cooling fan by a plurality of sequence controls, for example, when cooking is completed, medium rotation at time T3, and then weak rotation at time (c).
And a plurality of cooling controls can be constructed by combining the control with the plurality of temperature determination means 7. Embodiment 2 FIG. 3 is a flowchart of the present invention. FIG. 3 shows a combination of a control means 6 for controlling the cooling fan by a plurality of sequence controls and a plurality of temperature judgment means 7, and those having the same reference numerals as in the first embodiment have the same structure. The description is omitted. In FIG. 1, the microcomputer 5 determines in step S1 that the temperature obtained from the temperature detecting device 3 is T.
It is determined whether it is less than Temp2, and if it is not less than Temp2, the process proceeds to Step S2 and Step S3,
The control is performed based on the strength of the cooling fan 4 set at the time T1 and the time (a). If it is determined in step 1 that the temperature is less than Temp2, the process proceeds to step 4 and the temperature detection device 3
Judge whether the temperature obtained from is less than Temp1,
When it is determined that the temperature is not less than Temp1, the process proceeds to step 5 and step 6, and the control is performed with the strength of the cooling fan 4 set at time T2 and time (b). If it is determined in step 4 that the temperature is less than Temp1, the process proceeds to step 7 and the temperature detector 3
Judge whether the temperature obtained from is less than Temp0,
If it is determined that the value is not less than Temp0, the process proceeds to steps 8 and 9, and the control is performed with the strength of the cooling fan 4 set at time T3 and time (c). If it is determined in step 7 that the value is less than Temp0, the process proceeds to step 10 and the cooling fan 4
Is turned off. Since this step is an embodiment, the determinations in steps S1, S4, and S7 can be made in any order, and a method can be adopted in which the program including the determination criteria is easy. In some cases, judgment may not be necessary. As described above, according to the present invention, the following effects can be obtained. Controlling the cooling fan by a plurality of sequence controls
In order to improve the noise, the control means
If the inside of the cooker body is still hot immediately after
Activate the cooling fan, then reduce the intensity
Drive the cooling fan and drive at the respective strength.
The heating time can also be changed, and the heating chamber
Turn the cooling fan with strong intensity during hot days,
During the period when the heating chamber is slightly cooled after the
Control means for performing sequence control to reduce the intensity of
This makes it possible to construct a cooling sequence control that is optimal and detailed in accordance with the temperature in the heating chamber at the end of cooking at that time or the menu, and can increase the cooling efficiency and reduce noise and power consumption. Further, by controlling the combination of the cooling fan control means and the plurality of temperature determination means, an optimal and detailed cooling sequence control adapted to the state after cooking is completed, compared with the case of using only the cooling fan control means. Can be constructed, cooling efficiency can be increased, and noise and power consumption can be reduced. Further, since the cooling control can be constructed by the control means in the microcomputer 5, the construction of the cooling control does not require any additional components, so that the cost can be reduced.

【図面の簡単な説明】【図１】本発明の実施例１の高周波加熱装置の構成図【図２】本発明の実施例１の高周波加熱装置のシーケン
スを示す図【図３】本発明の実施例２の高周波加熱装置のフローチ
ャート【符号の説明】１高周波発振器２加熱装置３温度検出装置４冷却ファン５マイクロコンピュータ６冷却ファンの制御手段７温度判定手段BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a high-frequency heating device according to a first embodiment of the present invention. FIG. 2 is a diagram showing a sequence of the high-frequency heating device according to the first embodiment of the present invention. Flowchart of high-frequency heating device of embodiment 2 [Description of symbols] 1 High-frequency oscillator 2 Heating device 3 Temperature detection device 4 Cooling fan 5 Microcomputer 6 Cooling fan control means 7 Temperature determination means

Claims

(1) A high-frequency oscillator that supplies high-frequency power to a heating chamber, a heating device that heats food, a temperature detection device that detects a temperature in the heating chamber, and the temperature detection device. and a cooling fan and a control means for cooling the various components provided in the cooker body including, said control means have a plurality of sequence control for driving the cooling fan according to the temperature of the heating chamber Control means for improving noise
Is strong when the cooker body is still hot immediately after cooking
Drive the cooling fan at a low intensity, and then
Drive the cooling fan as
It is also possible to change the driving time in degrees,
When the room is still hot, turn on the cooling fan with strong intensity.
After that, during the time when the heating chamber is slightly cooled,
A high-frequency heating device that performs sequence control to reduce the strength of the fan .