JPS6360657B2 - - Google Patents
Info
- Publication number
- JPS6360657B2 JPS6360657B2 JP58132448A JP13244883A JPS6360657B2 JP S6360657 B2 JPS6360657 B2 JP S6360657B2 JP 58132448 A JP58132448 A JP 58132448A JP 13244883 A JP13244883 A JP 13244883A JP S6360657 B2 JPS6360657 B2 JP S6360657B2
- Authority
- JP
- Japan
- Prior art keywords
- amount
- heating
- heated
- temperature
- resistor
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims description 26
- 238000010411 cooking Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 241000209094 Oryza Species 0.000 description 18
- 235000007164 Oryza sativa Nutrition 0.000 description 18
- 235000009566 rice Nutrition 0.000 description 18
- 230000002457 bidirectional effect Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cookers (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は炊飯器等の調理器における加熱制御方
法に関し、特に被加熱物量を自動的に検出して、
被加熱物量に応じた加熱量で調理を行おうとする
ものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a heating control method in a cooking device such as a rice cooker, and in particular to a heating control method for automatically detecting the amount of an object to be heated.
The idea is to perform cooking with the amount of heating that corresponds to the amount of the object to be heated.
従来例の構成とその問題点
従来の調理器、例えば炊飯器は一定電力で炊飯
を行うものであるため、大型の炊飯器で少量の炊
飯を行うとおいしいご飯を炊くことができず、炊
飯量に応じた炊飯器を準備しなければならないも
のであつた。Conventional configuration and its problems Conventional cookers, such as rice cookers, cook rice using a constant amount of electricity, so if you use a large rice cooker to cook a small amount of rice, you will not be able to cook delicious rice, and the amount of rice cooked will increase. It was necessary to prepare a rice cooker according to the situation.
発明の目的
本発明は上記従来の欠点を解消し、被加熱物量
を自動的に検出して被加熱物量に応じた加熱量で
調理を行うことができるとともに、被加熱物量の
検出が正確に行える調理器の加熱制御方法を提供
しようとするものである。Purpose of the Invention The present invention eliminates the above-mentioned conventional drawbacks, automatically detects the amount of the object to be heated, allows cooking to be performed with the amount of heating corresponding to the amount of the object to be heated, and also enables accurate detection of the amount of the object to be heated. The present invention aims to provide a heating control method for a cooker.
発明の構成
上記目的を達成するため、本発明の調理器の加
熱制御方法は、被加熱物を一定温度に保つ第１の
工程と、この第１の工程後に、被加熱物を所定の
加熱量で加熱する第２の工程と、この第２の工程
後に、前記第２の工程における被加熱物の温度上
昇速度に応じた加熱量で前記被加熱を加熱する第
３の工程を備えてなるものである。Structure of the Invention In order to achieve the above object, the cooking device heating control method of the present invention includes a first step of keeping an object to be heated at a constant temperature, and after this first step, a heating control method for a cooking device of the present invention. a second step of heating the object, and a third step after the second step of heating the object with a heating amount corresponding to the rate of temperature rise of the object in the second step. It is.
実施例の説明
以下、本発明の実施例について添付図面を参照
して説明する。DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
図において、１は交流電源であり、熱応動装置
等の炊飯スイツチで２、ヒータ３、双方向性サイ
リスタ４の直列回路が接続されている。５はモー
タであり、このモータ５の駆動により切換スイツ
チ６が三個の切換接点ａ，ｂ，ｃを順次閉成す
る。切換接点ａには容器または容器近傍の温度を
検知して開閉するサーモスタツト７と抵抗器８が
接続され、切換接点ｂには抵抗器９が接続され、
切換接点ｃには可変抵抗器１０が接続されてい
る。これら抵抗器８，９、可変抵抗器１０の一端
は共通接続され、トリガー素子１１およびコンデ
ンサ１２に接続され、このトリガー素子１２は双
方向性サイリスタ４のゲート極に接続されてい
る。１３は抵抗器、１４はダイオード、１５はコ
ンデンサであり、直列接続され、コンデンサ１５
の両端には直流電圧が発生する。このコンデンサ
１５に対し、抵抗器１６，１７，１８の直列回路
と、容器または容器近傍の温度（被加熱物の温
度）を検知する負特性のサーミスタ１９、抵抗器
２０の直列回路と、トランジスタ２１，２２、モ
ータ２３の直列回路がそれぞれ並列接続されてい
る。２４はトランジスタ２１をON−OFF制御す
る第１の比較器であり、一方の入力端子はサーミ
スタ１９と抵抗器２０間に接続され、他方の入力
端子は抵抗器１６と抵抗器１７間に接続されてい
る。２５はトランジスタ２２をON−OFF制御す
る第２の比較器であり、一方の入力端子は抵抗器
１７と抵抗器１８間に接続され、他方の入力端子
はサーミスタ１９と抵抗器２０間に接続されてい
る。なおモータ２３は駆動されると可変抵抗器１
０の抵抗値を変化させる。 In the figure, 1 is an AC power source, to which a series circuit of 2, a heater 3, and a bidirectional thyristor 4 is connected by a rice cooker switch such as a thermally responsive device. Reference numeral 5 denotes a motor, and when the motor 5 is driven, a changeover switch 6 sequentially closes three changeover contacts a, b, and c. A thermostat 7 and a resistor 8, which open and close by detecting the temperature of the container or the vicinity of the container, are connected to the switching contact a, and a resistor 9 is connected to the switching contact b.
A variable resistor 10 is connected to the switching contact c. One ends of these resistors 8, 9 and variable resistor 10 are connected in common and connected to a trigger element 11 and a capacitor 12, and this trigger element 12 is connected to the gate pole of the bidirectional thyristor 4. 13 is a resistor, 14 is a diode, and 15 is a capacitor, which are connected in series.
A DC voltage is generated across the terminal. This capacitor 15 is connected to a series circuit of resistors 16, 17, and 18, a thermistor 19 with a negative characteristic that detects the temperature of the container or the vicinity of the container (temperature of the heated object), a series circuit of a resistor 20, and a transistor 21. , 22, and motor 23 are connected in parallel. 24 is a first comparator that controls ON/OFF of the transistor 21, one input terminal is connected between the thermistor 19 and the resistor 20, and the other input terminal is connected between the resistor 16 and the resistor 17. ing. 25 is a second comparator that controls ON/OFF of the transistor 22, one input terminal is connected between the resistor 17 and the resistor 18, and the other input terminal is connected between the thermistor 19 and the resistor 20. ing. Note that when the motor 23 is driven, the variable resistor 1
Change the resistance value of 0.
次に上記構成における動作について説明する。 Next, the operation in the above configuration will be explained.
まず、炊飯スイツチ２を閉成することによりモ
ータ５が駆動し、カム等（図示せず）を介して切
換スイツチ６を接点ａに閉成する。この場合、サ
ーモスタツト７、抵抗８、コンデンサ１２の時定
数回路によつて、サーモスタツト７の開閉に従つ
て双方向性サイリスタ４が導通制御され、ヒータ
３によつて容器温度を比較的低温、例えば約40℃
程度に保つ。この期間は被加熱物を一定に保つ第
１の工程時であり、第２図taに相当する。一方、
この期間（第１の工程）taにおいて、第２の比較
器２５は抵抗器１６，１７と抵抗器１８とで分比
された電圧を基準とし、第１の比較器２４は抵抗
器１６と抵抗器１７，１８とで分比された電圧を
基準とし、それぞれサーミスタ１９と抵抗器２０
とで分比された電圧を入力とし、それぞれ、その
出力は反対動作をするように構成されている。容
器温度（被加熱物温度）が低いときはサーミスタ
１９が高抵抗値であり、第１の比較器２４、第２
の比較器２５の入力電圧は低レベルとなる。この
ため第１の比較器２４の出力電圧は高レベルとな
りトランジスタ２１をOFFする。また、第２の
比較器の出力電圧は低レベルとなりONする。こ
の場合モータ２３は駆動しない。この状態の期間
（第１の工程）taが経過すると、モータ５により
切換スイツチ６は切換接点ｂを閉成する。この期
間tbにおいて、抵抗器９とコンデンサ１２とで決
定される時定数に基づき双方方向性サイリスタ４
が導通制御され、一定電力でヒータ３が容器を加
熱する。この期間は被加熱物を所定の加熱量で加
熱する第２の工程時であり、第２図中、tbに相当
する。この場合、容器の温度は一定速度で上昇す
る。 First, by closing the rice cooking switch 2, the motor 5 is driven, and the changeover switch 6 is closed to the contact a via a cam or the like (not shown). In this case, the time constant circuit of the thermostat 7, the resistor 8, and the capacitor 12 controls the conduction of the bidirectional thyristor 4 according to the opening and closing of the thermostat 7, and the heater 3 lowers the container temperature to a relatively low temperature. For example, about 40℃
Keep it at a moderate level. This period is the first step of keeping the heated object constant, and corresponds to t a in FIG. 2. on the other hand,
During this period (first step) t a , the second comparator 25 uses the voltage divided by the resistors 16 and 17 and the resistor 18 as a reference, and the first comparator 24 uses the voltage divided by the resistor 16 and the resistor 18 as a reference. Using the voltage divided by resistors 17 and 18 as a reference, the thermistor 19 and resistor 20 are applied, respectively.
The voltages divided by and are input, and the outputs thereof are configured to perform opposite operations. When the container temperature (heated object temperature) is low, the thermistor 19 has a high resistance value, and the first comparator 24 and the second
The input voltage of the comparator 25 becomes low level. Therefore, the output voltage of the first comparator 24 becomes high level, turning off the transistor 21. Further, the output voltage of the second comparator becomes low level and turns ON. In this case, the motor 23 is not driven. When the period (first step) t a in this state has elapsed, the motor 5 causes the changeover switch 6 to close the changeover contact b. During this period t b , the bidirectional thyristor 4
conduction is controlled, and the heater 3 heats the container with constant power. This period is the second step of heating the object to be heated with a predetermined heating amount, and corresponds to t b in FIG. 2. In this case, the temperature of the container increases at a constant rate.
容器温度が第１の設定温度θ1に達すると、第１
の比較器２４の入力電圧が基準電圧以上となり、
第１の比較器２４の出力電圧は低レベルとなる。
従つてトランジスタ２１，２２がともにON状態
となり、モータ２３が駆動を開始する。モータ２
３は減速器（図示せず）を介して可変抵抗器１０
を初期状態の高抵抗値から低抵抗値側に変化させ
る。温度上昇につれて第１、第２の比較器２４，
２５の入力電圧は上昇を続けるが、容器温度が第
２の設定温度θ2に達すると、第２の比較器２５の
入力電圧がその基準電圧以上となり、出力電圧は
低レベルから高レベルへと反転する。このためト
ランジスタ２２がOFF状態となるのでモータ２
３は駆動を停止し、可変抵抗器１０の抵抗値変化
も停止する。この場合、容器温度が設定温度θ1か
らθ2へと上昇する時間t〓はモータ２３の駆動時間
であり、炊飯量（被加熱物量）に比例している。
すなわち、可変抵抗器１０の抵抗値は炊飯量（被
加熱物量）に応じた値となつている。この後の期
間（第３の工程）tcにおいてはモータ５の駆動に
より切換スイツチ６が切換接点ｃを閉成し、可変
抵抗器１０の抵抗値とコンデンサ１２の容量とで
決定される時定数に基づき、双方向性サイリスタ
４が導通制御され、炊飯量（被加熱物量）に対応
した電力がヒータ３に供給される。 When the container temperature reaches the first set temperature θ 1 , the first
The input voltage of the comparator 24 becomes higher than the reference voltage,
The output voltage of the first comparator 24 becomes low level.
Therefore, both transistors 21 and 22 are turned on, and the motor 23 starts driving. motor 2
3 is a variable resistor 10 via a decelerator (not shown)
is changed from the initial high resistance value to the low resistance value side. As the temperature rises, the first and second comparators 24,
The input voltage of the second comparator 25 continues to rise, but when the container temperature reaches the second set temperature θ 2 , the input voltage of the second comparator 25 becomes equal to or higher than its reference voltage, and the output voltage changes from a low level to a high level. Invert. Therefore, the transistor 22 is turned off, so the motor 2
3 stops driving and also stops changing the resistance value of the variable resistor 10. In this case, the time t〓 for the container temperature to rise from the set temperature θ 1 to θ 2 is the drive time of the motor 23, and is proportional to the amount of cooked rice (the amount of material to be heated).
That is, the resistance value of the variable resistor 10 is a value corresponding to the amount of rice to be cooked (the amount of the object to be heated). During the subsequent period (third step) tc , the motor 5 is driven so that the changeover switch 6 closes the changeover contact c, and the time constant is determined by the resistance value of the variable resistor 10 and the capacity of the capacitor 12. Based on this, the bidirectional thyristor 4 is controlled to be conductive, and power corresponding to the amount of rice to be cooked (the amount of the object to be heated) is supplied to the heater 3.
この後、容器中の水分が蒸発して温度が急速に
上昇すると炊飯スイツチ２が開放し、炊飯が完了
する。 After this, when the water in the container evaporates and the temperature rises rapidly, the rice cooking switch 2 is opened and the rice cooking is completed.
上記実施例において、期間ta（第１の工程）に
おいて、被加熱物を一定温度に保ち、この後、第
２の工程において被加熱物を一定電力で加熱する
ため、第２の工程初期におせる被加熱物の状態が
一定化（初期条件が一定化）し、第２の工程にお
ける第１の設定温度θ1から第２の設定温度θ2に達
するまでの時間の計測が正確に行える。すなわ
ち、被加熱物量の検出が正確に行える。 In the above embodiment, in the period t a (first step), the object to be heated is kept at a constant temperature, and then in the second step, the object to be heated is heated with a constant electric power, so at the beginning of the second step. The state of the heated object becomes constant (the initial conditions become constant), and the time from the first set temperature θ 1 to the second set temperature θ 2 in the second process can be accurately measured. . That is, the amount of the object to be heated can be accurately detected.
なお、炊飯スイツチ２が開放すると、この開放
動作に連動して、切換スイツチ６および可変抵抗
器１０を初期状態に復帰させるようにすると再使
用の時、都合が良く、また復帰させるための構成
は容易に構成できる。また、可変抵抗器１０のか
わりにカウンタ回路を設け、このカウンタ回路の
出力に応じて電力調節器の調節量を変えるように
しても良く、サーミスタ１９、第１、第２の比較
器２４，２５からなる温度検知器は他の代替手段
を用いても良い。 It should be noted that when the rice cooker switch 2 is opened, it is convenient to return the changeover switch 6 and the variable resistor 10 to the initial state in conjunction with this opening operation, and the configuration for returning the switch is convenient for reuse. Easy to configure. Further, a counter circuit may be provided in place of the variable resistor 10, and the adjustment amount of the power regulator may be changed according to the output of this counter circuit. Other alternatives may be used for the temperature sensor.
また、上記実施例は第１の設定温度θ1から第２
の設定温度θ2に達するまでの時間を検出すること
により、この時間に基づき、第３の工程における
加熱量を決定したが、第１の設定時刻から第２の
設定時刻に達するまでの被加熱物の温度上昇量を
検出することにより、この温度上昇量に基づき、
第３の工程における加熱量を決定してもよい。す
なわち、被加熱物の温度上昇速度を検出すること
により、この温度上昇速度に基づき、第３の工程
における加熱量を決定すればよい。 Further, in the above embodiment, the first set temperature θ 1 to the second set temperature θ
The amount of heating in the third step was determined based on this time by detecting the time it took to reach the set temperature θ 2 . By detecting the amount of temperature rise of an object, based on this temperature rise,
The amount of heating in the third step may be determined. That is, by detecting the temperature rise rate of the object to be heated, the amount of heating in the third step may be determined based on this temperature rise rate.
なお、上記実施例における第１の工程でのサー
モスタツト７による温度調節は他の方法、例え
ば、サーモスタツト７に替えて、ON−OFF比率
を変える電力調節器を用いて電力を抑制すること
によつても実現できる。 Note that the temperature adjustment using the thermostat 7 in the first step in the above embodiment may be performed using another method, for example, instead of the thermostat 7, the power may be suppressed by using a power regulator that changes the ON-OFF ratio. It can be achieved even if it is difficult.
さらに、本発明は炊飯器に限定されるものでは
なく、オーブン等の他の調理器にも適用できるこ
とは言うまでもない。 Furthermore, it goes without saying that the present invention is not limited to rice cookers, but can also be applied to other cooking appliances such as ovens.
発明の効果
以上の説明から明らかなように、本発明によれ
ば被加熱物量に応じて加熱量を自動的に制御する
ので被加熱物量にかかわらず、常に適切な加熱量
で調理が行えるとともに、被加熱物量の検出が正
確に行え、より適正な加熱量で調理が行える。Effects of the Invention As is clear from the above explanation, according to the present invention, since the amount of heating is automatically controlled according to the amount of the object to be heated, cooking can always be performed with an appropriate amount of heating regardless of the amount of the object to be heated. The amount of food to be heated can be detected accurately, and cooking can be performed with a more appropriate amount of heating.
第１図は本発明の一実施例を示す炊飯器の制御
回路図、第２図イは同回路による容器温度の経時
的変化を示す図、第２図ロは同回路のヒータの消
費電力の経時的変化を示す図である。
ta……第１の工程、tb……第２の工程、tc……
第３の工程。
Fig. 1 is a control circuit diagram of a rice cooker showing an embodiment of the present invention, Fig. 2 (a) is a diagram showing changes in container temperature over time due to the same circuit, and Fig. 2 (b) is a diagram showing the power consumption of the heater in the same circuit. It is a figure showing a change over time. t a ...first process, t b ...second process, t c ...
Third step.
Claims (1)
温度に保つ第１の工程と、この第１の工程後に、
前記被加熱物を所定の加熱量で加熱する第２の工
程と、この第２の工程後に、前記第２の工程にお
ける被加熱物の温度上昇速度に応じた加熱量で前
記被加熱物を加熱する第３の工程を備えた調理器
の加熱制御方法。 ２ 第２の工程における被加熱物の温度上昇速度
が速い場合には第３の工程における加熱量が小さ
く、前記温度上昇速度が遅い場合には第３の工程
における加熱量が大きいことを特徴とする特許請
求の範囲第１項記載の調理器の加熱制御方法。[Claims] 1. A first step of keeping the heated object at a substantially constant temperature by suppressing the power of the heater, and after this first step,
a second step of heating the object to be heated with a predetermined heating amount; and after this second step, heating the object to be heated with an amount of heating that corresponds to the rate of temperature rise of the object in the second step; A cooking device heating control method comprising a third step of: 2. If the rate of temperature increase of the object to be heated in the second step is fast, the amount of heating in the third step is small, and if the rate of temperature increase is slow, the amount of heating in the third step is large. A heating control method for a cooking appliance according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13244883A JPS5957615A (en) | 1983-07-19 | 1983-07-19 | Heating control of cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13244883A JPS5957615A (en) | 1983-07-19 | 1983-07-19 | Heating control of cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5957615A JPS5957615A (en) | 1984-04-03 |
| JPS6360657B2 true JPS6360657B2 (en) | 1988-11-25 |
Family
ID=15081593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13244883A Granted JPS5957615A (en) | 1983-07-19 | 1983-07-19 | Heating control of cooker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5957615A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5266074A (en) * | 1975-11-27 | 1977-06-01 | Hitachi Netsu Kigu Kk | Rice cooking equipment |
| JPS55120811A (en) * | 1979-03-12 | 1980-09-17 | Fisher Corp | Latch system |
| JPS55125820A (en) * | 1979-03-20 | 1980-09-29 | Matsushita Electric Ind Co Ltd | Rice cooker |
-
1983
- 1983-07-19 JP JP13244883A patent/JPS5957615A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5266074A (en) * | 1975-11-27 | 1977-06-01 | Hitachi Netsu Kigu Kk | Rice cooking equipment |
| JPS55120811A (en) * | 1979-03-12 | 1980-09-17 | Fisher Corp | Latch system |
| JPS55125820A (en) * | 1979-03-20 | 1980-09-29 | Matsushita Electric Ind Co Ltd | Rice cooker |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5957615A (en) | 1984-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3364338A (en) | Oven temperature control | |
| KR850000583B1 (en) | Fice cooker-warmer | |
| JPS5921610B2 (en) | rice cooker control device | |
| JPS6360659B2 (en) | ||
| JPS6360657B2 (en) | ||
| JPS6360658B2 (en) | ||
| KR900012053A (en) | Automatic cooking heating method and device when selecting the menu of indirect heating method | |
| JPH0421994B2 (en) | ||
| JP2926913B2 (en) | rice cooker | |
| KR100197071B1 (en) | Electric pressure rice cooker | |
| JPS648249B2 (en) | ||
| JPS6334572Y2 (en) | ||
| JP2924315B2 (en) | rice cooker | |
| JPH0443151Y2 (en) | ||
| JPH0462733B2 (en) | ||
| JPH0795974B2 (en) | rice cooker | |
| JPS6142488Y2 (en) | ||
| KR950003301Y1 (en) | Cooker | |
| JP2563439B2 (en) | Electric heating cooker | |
| JPS6345604Y2 (en) | ||
| JPH03112515A (en) | Cooker | |
| JPH0221690Y2 (en) | ||
| JPS5534733A (en) | Temperature control circuit | |
| JPS60852B2 (en) | rice cooker control device | |
| JPH0460643B2 (en) |