JPS623558B2 - - Google Patents

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Publication number
JPS623558B2
JPS623558B2 JP12858882A JP12858882A JPS623558B2 JP S623558 B2 JPS623558 B2 JP S623558B2 JP 12858882 A JP12858882 A JP 12858882A JP 12858882 A JP12858882 A JP 12858882A JP S623558 B2 JPS623558 B2 JP S623558B2
Authority
JP
Japan
Prior art keywords
food
cooking
gas sensor
setting
heating
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.)
Expired
Application number
JP12858882A
Other languages
Japanese (ja)
Other versions
JPS5918593A (en
Inventor
Takeshi Tanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP12858882A priority Critical patent/JPS5918593A/en
Publication of JPS5918593A publication Critical patent/JPS5918593A/en
Publication of JPS623558B2 publication Critical patent/JPS623558B2/ja
Granted legal-status Critical Current

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  • Control Of High-Frequency Heating Circuits (AREA)
  • Electric Ovens (AREA)

Description

【発明の詳細な説明】 本発明は、調理すべき食品の種類に応じて高周
波加熱を自動的に制御する電子レンジに関し、同
じ種類の食品であつても、量が異なる場合に、量
の多少に応じて追加の高周波加熱を行なうととも
に、食品の種類に応じて追加の高周波加熱(以下
追加熱と略称する。)の出力を変化させることに
より、食品を最適な加熱調理仕上り状態とし得る
ようにすることを目的とする。
Detailed Description of the Invention The present invention relates to a microwave oven that automatically controls high-frequency heating according to the type of food to be cooked. In addition to performing additional high-frequency heating according to the food type, the output of the additional high-frequency heating (hereinafter referred to as "additional heat") is changed according to the type of food, so that the food can be heated to an optimal finished state. The purpose is to

従来汎用されている電子レンジにおいて、セン
サにより食品の自動調理仕上りの判別を行なうよ
うにしたものがあつたが、調理メニユーの種類に
対応させて複数個の調理キーを設け、各キー毎に
調理仕上り温度を予め設定して、センサにより調
理仕上りを判別するものであつた。従つて、調理
メニユーに応じて操作すべきキーが異なり、操作
が煩雑であるのみならず、操作ミスが生ずる虞れ
がある。
Conventionally, general-purpose microwave ovens used sensors to automatically determine the cooking completion of food, but multiple cooking keys were provided corresponding to the type of cooking menu, and each key could be used to The finishing temperature was set in advance, and the finished cooking was determined by a sensor. Therefore, the keys to be operated differ depending on the cooking menu, which not only complicates the operation but also increases the risk of operational errors.

本発明者は、高周波加熱調理中におけるセンサ
の端子電圧の時間的変化率により食品の種類を判
別して、調理仕上りを制御するようにし、以て前
記複数個のキーを省略して1個のキーとした、い
わゆる「おまかせ加熱」方式の電子レンジを発明
した。
The present inventor has determined the type of food based on the temporal change rate of the terminal voltage of the sensor during high-frequency cooking, and controlled the cooking finish, thereby omitting the plurality of keys and using only one key. He invented a microwave oven with the so-called "automatic heating" method.

ここで、いわゆる「おまかせ加熱」方式の電子
レンジの原理を説明する。
Here, the principle of a so-called "automatic heating" type microwave oven will be explained.

第1図はガスセンサの端子電圧VGが調理する
食品の種類により時間とともにどのように変化す
るかを示す図であり、加熱調理開始から時間T1
経過時におけるガスセンサの端子電圧をVT1、時
間T2経過時におけるガスセンサの端子電圧をVT
とし、両電圧の比VT2/VT1を演算すれば、比
T2/VT1は食品の種類により著しい差異を示
す。
Figure 1 is a diagram showing how the terminal voltage V G of the gas sensor changes over time depending on the type of food being cooked.
The terminal voltage of the gas sensor after the elapsed time is V T1 , and the terminal voltage of the gas sensor after the elapse of time T 2 is V T
2 and calculate the ratio V T2 /V T1 of both voltages, the ratio V T2 /V T1 shows significant differences depending on the type of food.

例えばT1=30秒、T2=40秒に設定すれば、酒
燗の場合には比VT2/VT1は0.9未満であり、お
かず、丼物の場合には比VT2/VT1は0.9以上0.95
未満であり、ラツプフイルムで包装した下ごしら
えの場合には比VT2/VT1は0.95以上1.0未満であ
る。
For example, if T 1 = 30 seconds and T 2 = 40 seconds, the ratio V T2 /V T1 will be less than 0.9 for sake sake, and the ratio V T2 /V T1 will be less than 0.9 for side dishes and rice bowls. 0.9 or more 0.95
In the case of preparations wrapped in wrap film, the ratio V T2 /V T1 is 0.95 or more and less than 1.0.

従つて、比VT2/VT1の大小により食品の種類
を判別し、食品の種類に対応させて高周波加熱を
停止させるべきVGの検知レベルVHS,VDS,VS
を設定し、これによつて食品の種類毎に最適の
調理仕上りの制御を行なうことができる。
Therefore, the type of food is determined based on the magnitude of the ratio V T2 /V T1 , and the detection levels of V G at which high frequency heating should be stopped are determined according to the type of food V HS , V DS , V S
By setting S , it is possible to control the optimum cooking finish for each type of food.

また、同じ種類の食品においても量によつて加
熱調理時間を変化させる必要があり、この場合に
は排気通路に配設した感熱素子の端子電圧の時間
的変化率により食品の量に対応する係数Nを算出
し、ガスセンサによる検知レベルに達するまでの
加熱調理時間tと前記係数Nとで定まる所定時間
追加熱を行なうことにより、食品の量の多少に応
じて最適の調理仕上りの制御を行なうこととして
いる。
In addition, even for the same type of food, it is necessary to change the cooking time depending on the amount, and in this case, the coefficient corresponding to the amount of food is determined by the rate of change over time of the terminal voltage of the heat-sensitive element installed in the exhaust passage. By calculating N and performing additional heating for a predetermined time determined by the heating cooking time t until reaching the detection level by the gas sensor and the coefficient N, the optimal cooking finish is controlled depending on the amount of food. It is said that

そして、追加熱時の高周波出力を最大値に設定
している。
The high frequency output during additional heat is set to the maximum value.

ところが、調理実験により、追加熱時の出力を
食品の種類に応じて調節することが、よりよい食
品の調理仕上りの観点から好ましいことが判明し
ている。例えば酒燗の場合には高周波出力を最大
値として追加熱を行なつてもよいが、下ごしらえ
の場合には、高周波出力を最大値として追加熱を
行なうと、大根、馬齢薯等は、一部が過加熱とな
る等出来上りの不均一を生じ、或は味が劣る等の
欠点を生ずる。
However, through cooking experiments, it has been found that it is preferable to adjust the output during additional heat depending on the type of food, from the viewpoint of better cooked food. For example, in the case of sake brewing, additional heat may be performed by setting the high frequency output to the maximum value, but in the case of preparation, if additional heat is performed by setting the high frequency output to the maximum value, some of the radish, aged yam, etc. However, this may result in non-uniformity in the finished product, such as overheating, or disadvantages, such as poor taste.

本発明は、加熱調理室内の食品の量に応じて追
加熱の所要時間を設定するとともに、食品の種類
に応じて追加熱時の高周波出力を制御するように
して上記の欠点を解消したものであり、以下、実
施例を示す添付図面によつて詳細に説明する。
The present invention solves the above drawbacks by setting the time required for additional heat according to the amount of food in the cooking chamber and controlling the high frequency output during additional heat according to the type of food. Embodiments will be described in detail below with reference to the accompanying drawings showing examples.

第3図は本発明電子レンジの一実施例を示す正
面図、第4図は同縦断面図であり、外箱体29の
前面に「おまかせ加熱」キー2及び加熱キー(ク
ツクキー)3を配設した操作パネル1を設け、更
に外箱体29と加熱調理室4との間に、該加熱調
理室内へ空気を送給するフアン5を設けるととも
に、加熱調理室4の排気口6から吐出する空気中
のガス濃度を検出するガスセンサ7及び温度を検
出するサーミスタ8を設けている。
FIG. 3 is a front view showing an embodiment of the microwave oven of the present invention, and FIG. 4 is a longitudinal sectional view of the same, in which an "automatic heating" key 2 and a heating key 3 are arranged on the front surface of the outer box body 29. A fan 5 is provided between the outer box body 29 and the heating cooking chamber 4 for supplying air into the heating cooking chamber, and the air is discharged from the exhaust port 6 of the heating cooking chamber 4. A gas sensor 7 for detecting gas concentration in the air and a thermistor 8 for detecting temperature are provided.

尚、28は加熱調理室4に食品30を出し入れ
する扉であり、9はマグネトロンであり、10は
食品30を載支するターンテーブルである。
Note that 28 is a door for taking food 30 in and out of cooking chamber 4, 9 is a magnetron, and 10 is a turntable on which food 30 is placed.

また、前記キー2,3については、1つにまと
めることも可能である。
Furthermore, the keys 2 and 3 may be combined into one.

第5図は本発明電子レンジの一実施例を示す電
気結線図であり、ガスセンサ7及びサーミスタ8
をを夫々抵抗、RL1,RL2を介して直流電源11
に接続するとともに、ガスセンサ7及びサーミス
タ8の端子電圧VG,VTを夫々A/D変換器1
2,13及びインターフエース14を介して、
ROM、RAM、CPU、クロツク発生器等を有する
マイクロコンピユータ15に印加している。
FIG. 5 is an electrical wiring diagram showing an embodiment of the microwave oven of the present invention, including a gas sensor 7 and a thermistor 8.
DC power supply 11 through the respective resistors, R L1 and R L2
and connect the terminal voltages V G and V T of the gas sensor 7 and thermistor 8 to the A/D converter 1, respectively.
2, 13 and interface 14,
The voltage is applied to a microcomputer 15 having ROM, RAM, CPU, clock generator, etc.

また、操作パネル1のキー信号を、インターフ
エース14を介してマイクロコンピユータ15に
印加している。
Further, key signals from the operation panel 1 are applied to the microcomputer 15 via the interface 14.

また、マグネトロン9は、商用交流電圧を昇圧
トランス20にて昇圧させ、該昇圧した高電圧を
印加することにより駆動されるものである。そし
て昇圧トランス20は、扉28の開閉と連動する
ドアスイツチ19及びマイクロコンピユータ15
の出力信号によりON−OFF切換作動するリレー
接点18を介して商用交流電源16と接続されて
いる。またリレー接点18を駆動するリレーコイ
ル17を、マイクロコンピユータ15の出力信号
によりON−OFF状態に切り換えられるスイツチ
ングトランジスタ21を介して直流電源11に接
続している。
Further, the magnetron 9 is driven by boosting a commercial AC voltage using a step-up transformer 20 and applying the boosted high voltage. The step-up transformer 20 is connected to a door switch 19 and a microcomputer 15 that operate in conjunction with the opening and closing of the door 28.
It is connected to a commercial AC power source 16 via a relay contact 18 which is switched ON and OFF by an output signal. Further, a relay coil 17 that drives a relay contact 18 is connected to a DC power source 11 via a switching transistor 21 which is switched between ON and OFF states by an output signal from a microcomputer 15.

以上の構成になる電子レンジの作用は次のとお
りである。
The operation of the microwave oven having the above configuration is as follows.

扉28を開いて加熱調理室4のターンテーブル
10に食品30を載置し、扉28を閉じてドアス
イツチ19をONとした後、「おまかせ加熱」キー
2を押し、次いで加熱キー3を押すことにより、
CPUに高周波加熱調理を開始すべきことを示す
信号を印加する。従つてCPUは、スイツチング
トランジスタ21を介してリレーコイル17を励
磁し、リレー接点18をON状態としてマグネト
ロン9を発振させ、以て高周波加熱調理を開始す
る。
After opening the door 28 and placing the food 30 on the turntable 10 of the heating cooking chamber 4, closing the door 28 and turning on the door switch 19, press the "Automatic heating" key 2, and then press the heating key 3. According to
A signal indicating that high frequency cooking should be started is applied to the CPU. Therefore, the CPU excites the relay coil 17 via the switching transistor 21, turns on the relay contact 18, causes the magnetron 9 to oscillate, and starts high-frequency heating cooking.

そして、高周波加熱調理を所定時間T1継続し
た時点のガスセンサ7の端子電圧VT1とサーミス
タ8の端子電圧CT1及び所定時間T2継続した時
点のガスセンサ7の端子電圧VT2とサーミスタ8
の端子電圧CT2を夫々RAMに記憶し、両端子電
圧の差CT2−CT1及び両端子電圧の比VT2/VT1
を演算する。
Then, the terminal voltage V T1 of the gas sensor 7 and the terminal voltage C T1 of the thermistor 8 at the time when the high-frequency cooking continues for a predetermined time T 1, and the terminal voltage V T2 of the gas sensor 7 and the thermistor 8 at the time when the high frequency cooking continues for a predetermined time T 2 , and the thermistor 8.
The terminal voltages C T2 of both terminals are stored in RAM respectively, and the difference between both terminal voltages C T2 −C T1 and the ratio of both terminal voltages V T2 /V T1 are calculated.
Calculate.

ここで差CT2−CT1が3未満か、3以上5以下
か、5より大きいかを判別して、食品の量に対応
する係数Nとして、夫々0.3、0.2、0.1を設定す
る。
Here, it is determined whether the difference C T2 -C T1 is less than 3, 3 or more and 5 or less, or greater than 5, and the coefficient N corresponding to the amount of food is set to 0.3, 0.2, and 0.1, respectively.

また、比VT2/VT1が0.9未満か、0.9以上0.95
未満か、0.95以上1.0未満かを判別して、ガスセ
ンサ検知レベルを夫々VSS,VDS,VHSに設定す
る。
Also, the ratio V T2 /V T1 is less than 0.9 or 0.9 or more and 0.95
or 0.95 or more and less than 1.0, and set the gas sensor detection levels to V SS , V DS , and V HS , respectively.

その後、更に高周波加熱調理を継続し、ガスセ
ンサ7の端子電圧VGがガスセンサ検知レベルに
達すれば、高周波加熱調理時間tを算出し、該時
間tに前記係数Nを乗算して追加熱時間N×tを
算出する。
Thereafter, the high-frequency heating cooking is further continued, and when the terminal voltage V G of the gas sensor 7 reaches the gas sensor detection level, the high-frequency heating cooking time t is calculated, and the time t is multiplied by the coefficient N, and the additional heating time N x Calculate t.

そして、再び比VT2/VT1が0.95以上1.0未満か
否を判別する。
Then, it is determined again whether the ratio V T2 /V T1 is greater than or equal to 0.95 and less than 1.0.

もし、比VT2/VT1が0.95未満であれば(調理
メニユーが酒燗、おかず、丼物であれば)、リレ
ー接点18をON状態として高周波出力を最大値
に保持して追加熱を行なう。一方比VT2/VT1
0.95以上1.0未満であれば(調理メニユーが下ご
しらえであれば)、リレー接点18を一定の周期
(例えば32秒)でON−OFF切換駆動し、各周期
全体としてみた場合の高周波出力を低減させて追
加熱を行なう。
If the ratio V T2 /V T1 is less than 0.95 (if the cooking menu is sake, side dishes, or rice bowls), the relay contact 18 is turned ON to maintain the high frequency output at the maximum value and perform additional heat. . On the other hand, the ratio V T2 /V T1 is
If it is 0.95 or more and less than 1.0 (if the cooking menu is for preparation), the relay contact 18 is driven to switch between ON and OFF at a constant cycle (for example, 32 seconds) to reduce the high frequency output when looking at each cycle as a whole. Apply additional heat.

そして、N×tで定まる所定時間追加熱を行な
つた後は、リレー接点18をOFFとしてマグネ
トロン9の発振を停止し、加熱調理動作を完了す
る。
After the additional heat is applied for a predetermined time determined by N×t, the relay contact 18 is turned off to stop the oscillation of the magnetron 9, and the cooking operation is completed.

以上の加熱調理を行なう場合のガスセンサの端
子電圧の時間的変化を第2図に示す。
FIG. 2 shows the temporal change in the terminal voltage of the gas sensor when the above cooking is performed.

ここで、高周波出力を低減させる割合を変化さ
せるには、各周期におけるリレー接点18のON
期間とOFF期間との比を変化させればよい。
Here, in order to change the rate at which the high frequency output is reduced, it is necessary to turn on the relay contact 18 in each cycle.
What is necessary is to change the ratio between the period and the OFF period.

尚、本発明は前記実施例に限定されるものでは
なく、CT2とCT1との差により食品の量を検出す
る代わりにCT2とCT1との比により食品の量を検
出するようにしてもよいことは勿論である。
It should be noted that the present invention is not limited to the above embodiments, and instead of detecting the amount of food based on the difference between C T2 and C T1 , the amount of food is detected based on the ratio between C T2 and C T1 . Of course, it is possible.

以上のように本発明は、「おまかせ加熱」キー
1個を操作するのみで、自動的に、最高出力値で
食品の種類に応じた加熱調理を行なうことができ
るとともに、食品の量に応じた所定時間、食品の
種類に対応させて高周波出力値を変化させること
により追加熱を行なうことができ、食品毎に最適
の加熱調理を行ない得るという特有の効果を奏す
る。
As described above, the present invention is capable of automatically cooking food according to the type of food at the maximum output value by simply operating a single "Automatic heating" key, and also allows cooking according to the amount of food. Additional heat can be applied by changing the high-frequency output value for a predetermined period of time in accordance with the type of food, which has the unique effect of providing optimal heating and cooking for each food.

また、操作するキーを1個としたので、操作パ
ネルを簡素化することができるのみならず、操作
者にとつては何ら余分な判断を行なうことなくキ
ーの操作をすることが可能となるので操作ミス等
を皆無とし、使い勝手を向上させることができる
という効果も奏する。
In addition, since there is only one key to operate, not only can the operation panel be simplified, but the operator can operate the keys without making any unnecessary decisions. It also has the effect of eliminating any operational errors and improving usability.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は通常の自動加熱調理を行なう場合にお
けるガスセンサの端子電圧の時間的変化を示す
図、第2図は本発明電子レンジにより自動加熱調
理を行なう場合におけるガスセンサの端子電圧の
時間的変化を示す図、第3図は本発明電子レンジ
の一実施例を示す正面図、第4図は同縦断面図、
第5図は同電気結線図、第6図は第3図乃至第5
図に示す電子レンジの動作を示すフローチヤー
ト。 4……加熱調理室、6……排気口、7……ガス
センサ、8……サーミスタ、9……マグネトロ
ン、15……マイクロコンピユータ、18……リ
レー接点。
Fig. 1 shows the temporal change in the terminal voltage of the gas sensor when performing normal automatic heating cooking, and Fig. 2 shows the temporal change in the terminal voltage of the gas sensor when performing automatic heating cooking with the microwave oven of the present invention. FIG. 3 is a front view showing an embodiment of the microwave oven of the present invention, FIG. 4 is a longitudinal cross-sectional view of the same,
Figure 5 is the electrical wiring diagram, Figure 6 is the same electrical connection diagram as Figures 3 to 5.
Flowchart showing the operation of the microwave oven shown in the figure. 4... Heating cooking chamber, 6... Exhaust port, 7... Gas sensor, 8... Thermistor, 9... Magnetron, 15... Microcomputer, 18... Relay contact.

Claims (1)

【特許請求の範囲】 1 高周波加熱調理手段と、調理品から出るガス
の物理的変化を検知するガスセンサと、加熱調理
室からの排気温度を検知する感熱素子と、高周波
加熱調理手段への通電を制御するスイツチング手
段とを有する電子レンジにおいて、 上記ガスセンサの出力信号の時間的変化率を入
力として食品の分類分けを行ない、分類に応じて
上記ガスセンサによる仕上り検知レベルを設定す
る分類分け手段と、感熱素子の出力信号の時間的
変化率を入力として食品の量に対応する係数を設
定する係数設定手段と、前記検知レベルに達する
までの加熱調理時間と係数とにより追加熱時間を
設定する追加熱時間設定手段と、食品の分類に応
じて追加熱時の高周波出力を制御する制御手段と
を有することを特徴とする電子レンジ。
[Claims] 1. A high-frequency cooking means, a gas sensor that detects a physical change in gas emitted from a cooked product, a heat-sensitive element that detects the exhaust temperature from a heating cooking chamber, and an electric current supply to the high-frequency cooking means. a classification means for classifying food by inputting the temporal change rate of the output signal of the gas sensor and setting a finish detection level by the gas sensor according to the classification; a coefficient setting means for setting a coefficient corresponding to the amount of food by inputting the temporal change rate of the output signal of the element; and an additional heat time for setting the additional heat time based on the coefficient and the cooking time until the detection level is reached. A microwave oven characterized by having a setting means and a control means for controlling high frequency output during additional heating according to the classification of food.
JP12858882A 1982-07-22 1982-07-22 Electronic range Granted JPS5918593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12858882A JPS5918593A (en) 1982-07-22 1982-07-22 Electronic range

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12858882A JPS5918593A (en) 1982-07-22 1982-07-22 Electronic range

Publications (2)

Publication Number Publication Date
JPS5918593A JPS5918593A (en) 1984-01-30
JPS623558B2 true JPS623558B2 (en) 1987-01-26

Family

ID=14988462

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12858882A Granted JPS5918593A (en) 1982-07-22 1982-07-22 Electronic range

Country Status (1)

Country Link
JP (1) JPS5918593A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62128480A (en) * 1985-11-28 1987-06-10 株式会社東芝 Radio frequency heating cooker

Also Published As

Publication number Publication date
JPS5918593A (en) 1984-01-30

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