JPH0928564A - Rice cooker - Google Patents
Rice cookerInfo
- Publication number
- JPH0928564A JPH0928564A JP18522295A JP18522295A JPH0928564A JP H0928564 A JPH0928564 A JP H0928564A JP 18522295 A JP18522295 A JP 18522295A JP 18522295 A JP18522295 A JP 18522295A JP H0928564 A JPH0928564 A JP H0928564A
- Authority
- JP
- Japan
- Prior art keywords
- rice
- time
- heating
- temperature
- pan
- 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.)
- Pending
Links
Landscapes
- Cookers (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は主に家庭で使用される炊
飯器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker mainly used at home.
【0002】[0002]
【従来の技術】近年、消費者の嗜好の多様化と高度化に
対するニーズが強くなり、よりおいしいご飯を炊きあげ
るためにマイクロコンピュータを備えた炊飯器が普及し
てきた。2. Description of the Related Art In recent years, consumers' needs for diversification and sophistication have become strong, and rice cookers equipped with a microcomputer have become popular in order to cook delicious rice.
【0003】従来、この種の炊飯器の炊飯行程は図4に
示すようなものが一般的であった。図に示すように、米
を炊く下準備として米を一定の温度θ1に保ち一定時間
(T1)水に浸けて吸水を行なう前炊き行程を行い、一
定時間(T1)経過後フルパワ−で炊きあげ行程を行
い、炊きあげ行程の開始点から炊きあげ行程内の所定温
度θ2に達するまでの時間(T2)をカウントし、この
温度上昇勾配により沸騰維持行程の電力量を制御するよ
うになっている。Conventionally, the rice cooking process of this type of rice cooker has generally been as shown in FIG. As shown in the figure, as a preparation for cooking rice, the rice is kept at a constant temperature θ 1 for a certain period of time (T1) and immersed in water to absorb water. The raising process is performed, and the time (T2) from the start point of the cooking process until the temperature reaches the predetermined temperature θ 2 in the cooking process is counted, and the electric energy of the boiling maintaining process is controlled by this temperature rising gradient. ing.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の炊飯器では、加熱手段の種類によっては所定
温度θ2に達するまでの温度上昇勾配が非常に急とな
り、またT2の値のばらつきも大きくなることがあり、
沸騰維持行程の電力量の決定を精度よく行うことは難し
い場合が生じていた。そのため、いつも安定して炊飯量
に応じた最適火力で炊飯することはできず、ご飯の出来
が一定にならないという課題があった。However, in such a conventional rice cooker, the temperature rising gradient until reaching the predetermined temperature θ 2 becomes very steep depending on the kind of heating means, and the value of T2 also varies. Can grow,
It has been difficult in some cases to accurately determine the amount of electric power in the boiling maintaining process. Therefore, there is a problem that the rice cannot always be stably cooked with the optimum heating power according to the amount of cooked rice, and the quality of the rice is not uniform.
【0005】本発明は上記課題を解決するもので、米に
吸水させる前炊き行程の間に炊飯物の量を判定し、それ
に応じた最適火力で沸騰維持行程を行いおいしいごはん
を炊くことのできる炊飯器を提供することを目的とす
る。The present invention is intended to solve the above-mentioned problems, and it is possible to cook a delicious rice by determining the amount of cooked rice during the pre-cooking process in which rice absorbs water and performing the boiling maintaining process with the optimum heating power. The purpose is to provide a rice cooker.
【0006】[0006]
【課題を解決するための手段】この課題を解決するため
に本発明の炊飯器は、炊飯物を入れる鍋と、この鍋を加
熱する加熱手段と、前記鍋の温度を検知する温度検知手
段と、前記加熱手段の電力を制御し前炊き行程、炊きあ
げ行程、蒸らし行程の順序で予め設定されている炊飯プ
ログラムを実行する制御手段と、前記制御手段によって
米を一定の温度に保つように制御する際に前記加熱手段
からの出力がある度に出力された時間と次回出力までの
休止時間を計測する時間計測手段と、前記時間計測手段
の計測値を用いて休止時間に対する出力時間の比を算出
する演算手段と、前記演算手段により算出された値の情
報を入力し炊飯量を判定して前記制御手段に出力する炊
飯量判定手段により構成されている。In order to solve this problem, the rice cooker of the present invention comprises a pan for putting cooked rice, a heating means for heating the pan, and a temperature detecting means for detecting the temperature of the pan. Controlling the electric power of the heating means to execute a preset rice cooking program in the order of the pre-cooking step, the cooking step, and the steaming step; and controlling the rice to maintain a constant temperature by the control means. When the output from the heating means is output every time and the time measuring means for measuring the pause time until the next output, and the ratio of the output time to the pause time using the measurement value of the time measuring means It is composed of a calculating means for calculating and a rice cooking quantity judging means for inputting information of the value calculated by the calculating means to judge the rice cooking quantity and output it to the control means.
【0007】[0007]
【作用】本発明は上記構成によって、前炊き行程の間に
炊飯物の量を判定し、それに応じた最適火力で沸騰維持
行程を行うので、炊きあげ行程の温度上昇勾配を利用し
て沸騰維持行程の電力量を制御することが困難な炊飯器
であっても、いつも安定しておいしいご飯を炊くことが
できるのである。According to the present invention, since the amount of cooked rice is determined during the pre-cooking process and the boiling maintaining process is performed with the optimum heating power according to the above configuration, the boiling maintaining process is performed by using the temperature rising gradient of the cooking process. Even if it is a rice cooker where it is difficult to control the amount of electricity in the process, delicious rice can always be cooked stably.
【0008】[0008]
【実施例】以下本発明の一実施例について、図面を参照
しながら説明する。An embodiment of the present invention will be described below with reference to the drawings.
【0009】図1は本発明の一実施例の炊飯器のブロッ
ク図を示したもので、鍋1を加熱する加熱手段2と、鍋
1の温度を検知する温度検知手段3と、温度検知手段3
の信号を入力し加熱手段2を制御する制御手段4と、制
御手段4によって米を一定の温度に保つように制御する
際に、加熱手段2からの出力がある度に出力された時間
と次回出力までの休止時間を計測する時間計測手段5
と、時間計測手段5の計測値を用いて休止時間に対する
出力時間の比を算出する演算手段6と、演算手段6によ
り算出された値の情報を入力し炊飯量を判定して制御手
段4に出力する炊飯量判定手段7とによって構成されて
いる。そして制御手段4は、炊飯量判定手段7の情報に
より加熱手段2の電力量を制御し、また予め設定されて
いる炊飯プログラムを実行するものである。図2は同炊
飯器の断面図を示したもので、鍋1の温度を検知する温
度検知手段3は温度の変化量を抵抗値に変換する温度抵
抗素子からなり、上下自在に動くように構成され、鍋1
の底面に当接して配置されている。制御手段4を含むマ
イクロコンピュータ(図示せず)には時間計測手段5お
よび演算手段6と炊飯量判定手段7を有し回路基盤8に
組み込まれ本体9の底部に取り付けられている。FIG. 1 is a block diagram of a rice cooker according to an embodiment of the present invention, in which a heating means 2 for heating a pan 1, a temperature detecting means 3 for detecting the temperature of the pan 1 and a temperature detecting means. Three
When the control means 4 controls the heating means 2 by inputting the above signal and the rice is kept at a constant temperature by the control means 4, the time when the output from the heating means 2 is output and the next time Time measuring means 5 for measuring the pause time until output
And the calculation means 6 for calculating the ratio of the output time to the rest time by using the measurement value of the time measurement means 5, and the information of the value calculated by the calculation means 6 is inputted to judge the amount of cooked rice and the control means 4 is controlled. It is constituted by the cooked rice amount judging means 7 for outputting. Then, the control means 4 controls the amount of electric power of the heating means 2 based on the information of the cooked rice amount determination means 7, and executes a preset cooked rice program. FIG. 2 is a cross-sectional view of the rice cooker, in which the temperature detecting means 3 for detecting the temperature of the pot 1 is composed of a temperature resistance element for converting the amount of change in temperature into a resistance value and is configured to move up and down. Done, pot 1
Is arranged so as to abut the bottom surface of the. A microcomputer (not shown) including the control means 4 has a time measuring means 5, a computing means 6 and a cooked rice amount judging means 7, is incorporated in a circuit board 8 and is attached to the bottom of a main body 9.
【0010】以上のように構成された炊飯器において、
炊飯を行うときの動作について説明する。まず、鍋1に
米と水を入れた状態で炊飯を開始すると、図3に示すよ
うに、米を一定温度θ1に保ちながら一定時間(T1)
水に浸しておき吸水を行う前炊き行程を行う。このと
き、加熱を開始すると同時に時間計測手段5が時間計測
を開始し、鍋1の温度が上昇しθ1に達したことを温度
検知手段3が検知するまで時間(t1 )をカウントし、
鍋1の温度が上昇しθ1に達すると制御手段4により加
熱手段2からの加熱は停止され、加熱を停止してから再
び鍋1の温度が下がってθ1に達するまでの時間(t´1
)を時間計測手段5によりカウントする。その後再び
加熱を開始し、タイムアップするまで一定時間加熱手段
2の通電をON−OFFさせて、その都度、通電ONの
時間(t2 ,t3 …)と通電OFFの時間(t´2 ,t
´3 …)をカウントしながら鍋1の温度を吸水温度θ1
に保ち、演算手段6により前炊き行程の中の任意の部分
で任意の所定の回数(たとえば4回目の通電から数えて
3回)まで通電ONの時間を通電OFFの時間で除した
値すなわちtn /t´n を算出し、その平均値を求めて
マイクロコンピュータに記憶する。この平均値は炊飯物
の量が多いときはそれに対応して大きくなることを利用
して、タイムアップ後炊飯量判定手段7により炊飯物の
量を判定し、つづいて炊きあげ行程に入り、鍋内の炊飯
物が沸騰すると炊飯量に応じた最適電力量で沸騰維持行
程を行い、米の吸水糊化がすすんで鍋1の温度が所定の
炊きあげ終了温度θ3に達すれば沸騰維持行程を終了
し、蒸らし行程を経て炊飯動作を完了する。In the rice cooker configured as described above,
The operation when cooking rice will be described. First, when rice cooking is started with rice and water in the pan 1, as shown in FIG. 3, the rice is kept at a constant temperature θ 1 for a certain time (T1).
Perform the cooking process before soaking in water and absorbing water. At this time, at the same time when heating is started, the time measuring means 5 starts measuring time, and the time (t 1 ) is counted until the temperature detecting means 3 detects that the temperature of the pot 1 has risen and reached θ 1 .
When the temperature of the pan 1 rises and reaches θ 1 , the heating from the heating means 2 is stopped by the control means 4, and the time (t ′) after the temperature of the pan 1 drops again to reach θ 1 after the heating is stopped. 1
) Is counted by the time measuring means 5. After that, the heating is started again, and the energization of the heating means 2 is turned on and off for a certain time until the time is up, and each time the energization is turned on (t 2 , t 3 ...) And the energization off time (t ′ 2 , t
' 3 …) while counting the temperature of pot 1 water absorption temperature θ 1
And a value obtained by dividing the energization ON time by the energization OFF time up to an arbitrary predetermined number of times (for example, 3 times counting from the fourth energization) at any part of the pre-cooking process by the calculation means 6, that is, t n / t ' n is calculated, the average value thereof is calculated and stored in the microcomputer. Utilizing the fact that this average value increases correspondingly when the amount of cooked rice is large, the amount of cooked rice is judged by the cooked rice amount judging means 7 after the time is up, and then the cooking process is started, and the pot is cooked. When the cooked rice inside is boiled, the boiling maintenance process is performed with the optimum power amount according to the cooked rice amount, and if the temperature of the pot 1 reaches the predetermined cooking end temperature θ 3 as the water absorption gelatinization progresses, the boiling maintenance process is performed. The rice cooking operation is completed through the steaming process.
【0011】以上のように本実施例によれば、米に吸水
させる前炊き行程の間に、加熱手段2をON−OFFさ
せて吸水温度θ1を維持するために、炊飯量が多い(少
ない)ときには通電OFF時間に対する通電ON時間の
比が大きく(小さく)なるので、これを利用して炊飯物
の量を判定でき、沸騰維持行程の電力量を最適値に決定
できる。As described above, according to this embodiment, the amount of cooked rice is large (small) in order to maintain the water absorption temperature θ 1 by turning the heating means 2 on and off during the pre-cooking process in which the rice absorbs water. ) At this time, the ratio of the energization ON time to the energization OFF time becomes large (small), so that the amount of cooked rice can be determined using this, and the electric power amount in the boiling maintaining process can be determined to the optimum value.
【0012】[0012]
【発明の効果】以上のように本発明は、鍋を加熱する加
熱手段からの出力がある度に、出力された時間と次回出
力までの休止時間との比を算出し、その結果から炊飯量
を判定することにより、炊きあげ行程の温度上昇勾配を
利用して炊飯量を判定することが困難な炊飯器であって
も、炊飯量に応じた最適量でいつも安定しておいしいご
飯を炊くことができる優れた炊飯器を提供できる。As described above, the present invention calculates the ratio of the output time and the rest time until the next output each time there is an output from the heating means for heating the pan, and the rice cooking amount is calculated from the result. Even if it is difficult to determine the amount of cooked rice by using the temperature rise gradient of the cooking process, it is possible to always stably cook delicious rice with the optimum amount according to the amount of cooked rice. An excellent rice cooker can be provided.
【図1】本発明の一実施例の炊飯器のブロック図FIG. 1 is a block diagram of a rice cooker according to one embodiment of the present invention.
【図2】本発明の一実施例の炊飯器の部分断面図FIG. 2 is a partial sectional view of a rice cooker according to an embodiment of the present invention.
【図3】本発明の一実施例の炊飯器による炊飯温度と時
間との関係図FIG. 3 is a diagram showing the relationship between rice cooking temperature and time by the rice cooker according to one embodiment of the present invention.
【図4】従来例の炊飯器による炊飯温度と時間との関係
図FIG. 4 is a diagram showing the relationship between rice cooking temperature and time by a conventional rice cooker.
1 鍋 2 加熱手段 3 温度検知手段 4 制御手段 5 時間計測手段 6 演算手段 7 炊飯量判定手段 1 Pan 2 Heating Means 3 Temperature Detecting Means 4 Control Means 5 Hours Measuring Means 6 Computing Means 7 Rice Cooking Amount Judging Means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 宮後 恵美 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 堀内 美和 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 新山 浩次 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Emi Miyago 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Miwa Horiuchi 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 72) Inventor Koji Niiyama 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (1)
加熱手段と、前記鍋の温度を検知する温度検知手段と、
前記加熱手段による加熱状態を制御して前炊き行程、炊
きあげ行程、蒸らし行程を行う制御手段と、前記加熱手
段による加熱時間と休止時間を計測する時間計測手段
と、前記休止時間に対する前記加熱時間の比を算出する
演算手段とを備え、前記制御手段は、米を一定の温度に
保つように制御する際の前記演算手段の出力により前記
炊飯物の量を判定してなる炊飯器。1. A pot for putting cooked rice, heating means for heating the pot, and temperature detecting means for detecting the temperature of the pot.
Control means for controlling a heating state by the heating means to perform a precooking process, a cooking process, and a steaming process, a time measuring device for measuring a heating time and a dwell time by the heating device, and the heating time with respect to the dwell time. A rice cooker comprising: a calculating unit that calculates the ratio of the rice cooker, and the control unit determines the amount of the cooked rice based on the output of the calculating unit when controlling the rice so as to keep the rice at a constant temperature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18522295A JPH0928564A (en) | 1995-07-21 | 1995-07-21 | Rice cooker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18522295A JPH0928564A (en) | 1995-07-21 | 1995-07-21 | Rice cooker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0928564A true JPH0928564A (en) | 1997-02-04 |
Family
ID=16167021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18522295A Pending JPH0928564A (en) | 1995-07-21 | 1995-07-21 | Rice cooker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0928564A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6598153B1 (en) | 1999-12-10 | 2003-07-22 | International Business Machines Corporation | Processor and method that accelerate evaluation of pairs of condition-setting and branch instructions |
JP5629031B1 (en) * | 2014-04-17 | 2014-11-19 | 三菱電機株式会社 | Cooking device |
JP2015205159A (en) * | 2014-10-02 | 2015-11-19 | 三菱電機株式会社 | cooker |
JP2015205156A (en) * | 2014-08-14 | 2015-11-19 | 三菱電機株式会社 | cooker |
CN105615619A (en) * | 2015-12-23 | 2016-06-01 | 珠海格力电器股份有限公司 | Electric rice cooker and control method and device thereof |
CN109419306A (en) * | 2017-08-25 | 2019-03-05 | 佛山市顺德区美的电热电器制造有限公司 | Control method and control device, computer equipment, storage medium and cooking equipment |
CN110269518A (en) * | 2018-03-15 | 2019-09-24 | 佛山市顺德区美的电热电器制造有限公司 | Cooking control method and culinary art control device, storage medium and cooking equipment |
CN111671316A (en) * | 2020-06-16 | 2020-09-18 | 珠海格力电器股份有限公司 | Control method and device of electric cooking appliance, electronic equipment and storage medium |
-
1995
- 1995-07-21 JP JP18522295A patent/JPH0928564A/en active Pending
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6598153B1 (en) | 1999-12-10 | 2003-07-22 | International Business Machines Corporation | Processor and method that accelerate evaluation of pairs of condition-setting and branch instructions |
JP5629031B1 (en) * | 2014-04-17 | 2014-11-19 | 三菱電機株式会社 | Cooking device |
CN106231960A (en) * | 2014-04-17 | 2016-12-14 | 三菱电机株式会社 | Cooking device |
JP2015205156A (en) * | 2014-08-14 | 2015-11-19 | 三菱電機株式会社 | cooker |
JP2015205159A (en) * | 2014-10-02 | 2015-11-19 | 三菱電機株式会社 | cooker |
CN105615619A (en) * | 2015-12-23 | 2016-06-01 | 珠海格力电器股份有限公司 | Electric rice cooker and control method and device thereof |
CN105615619B (en) * | 2015-12-23 | 2017-10-27 | 珠海格力电器股份有限公司 | Electric rice cooker and control method and device thereof |
CN109419306A (en) * | 2017-08-25 | 2019-03-05 | 佛山市顺德区美的电热电器制造有限公司 | Control method and control device, computer equipment, storage medium and cooking equipment |
CN109419306B (en) * | 2017-08-25 | 2021-02-05 | 佛山市顺德区美的电热电器制造有限公司 | Control method and control device, computer equipment, storage medium and cooking equipment |
CN110269518A (en) * | 2018-03-15 | 2019-09-24 | 佛山市顺德区美的电热电器制造有限公司 | Cooking control method and culinary art control device, storage medium and cooking equipment |
CN110269518B (en) * | 2018-03-15 | 2021-11-02 | 佛山市顺德区美的电热电器制造有限公司 | Cooking control method and cooking control device, storage medium and cooking equipment |
CN111671316A (en) * | 2020-06-16 | 2020-09-18 | 珠海格力电器股份有限公司 | Control method and device of electric cooking appliance, electronic equipment and storage medium |
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