JPH01314513A - Electric rice cooker - Google Patents
Electric rice cookerInfo
- Publication number
- JPH01314513A JPH01314513A JP14738788A JP14738788A JPH01314513A JP H01314513 A JPH01314513 A JP H01314513A JP 14738788 A JP14738788 A JP 14738788A JP 14738788 A JP14738788 A JP 14738788A JP H01314513 A JPH01314513 A JP H01314513A
- Authority
- JP
- Japan
- Prior art keywords
- rice
- cooking
- pot
- temperature
- heater
- 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
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 112
- 235000009566 rice Nutrition 0.000 title claims abstract description 112
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 111
- 238000010411 cooking Methods 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000009835 boiling Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 20
- 238000010586 diagram Methods 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Cookers (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的コ
（産業上の利用分野）
この発明は、鍋を加熱する炊飯ヒータを備え、この炊飯
ヒータの人力を制御して炊飯をする電気炊飯器に関する
。DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention (Field of Industrial Application) This invention relates to an electric rice cooker that is equipped with a rice heater that heats a pot and that cooks rice by controlling the human power of the rice heater.
（従来の技術）
近年、この種の電気炊飯器においては、炊飯ヒータの入
力を電子回路で制御して好みに応じた飯を炊き上げるこ
とが可能となってきている。すなわち、例えば適度に焦
げのついた飯を好む場合などにそれを選択して炊飯する
ことができる。(Prior Art) In recent years, in this type of electric rice cooker, it has become possible to control the input of the rice cooking heater using an electronic circuit to cook rice according to one's taste. That is, for example, if you prefer moderately browned rice, you can select it for cooking.
このような電気炊飯器の一般的な構造を第３図に示し、
１が炊飯器本体で、この炊飯器本体１は外枠２と内枠３
とで構成され、内枠３の底部に炊飯ヒータ４および温度
検知器５が設けられ、外枠２の底部に前記温度検知器５
による温度検知情報などに基づいて炊飯ヒータ４の入力
を制御する電子回路ユニット６が配設されている。そし
て前記内枠３内に鍋７が挿脱自在に収納され、この鍋７
の上端の開口部が蓋体８で閉塞されている。さらに炊飯
器本体１および蓋体８にそれぞれ保温ヒータ９．１０が
設けられている。The general structure of such an electric rice cooker is shown in Figure 3.
1 is the rice cooker body, and this rice cooker body 1 has an outer frame 2 and an inner frame 3.
A rice cooking heater 4 and a temperature sensor 5 are provided at the bottom of the inner frame 3, and the temperature sensor 5 is provided at the bottom of the outer frame 2.
An electronic circuit unit 6 is provided to control the input to the rice cooking heater 4 based on temperature detection information etc. A pot 7 is removably housed in the inner frame 3.
The opening at the upper end is closed with a lid 8. Furthermore, the rice cooker main body 1 and the lid body 8 are each provided with heat-retaining heaters 9 and 10.
そして炊飯の際には、内枠３から鍋７を取出し１、この
ｗ４７内に水洗いした必要量の白米と、この白米の量に
応じた所定量の水を収容し、こののち鍋７を内枠３内に
挿入し、蓋体８でその開口部を閉じ、この状態で手動ま
たはタイマによりスタートスイッチ（図示せず）を投入
する。これに応じて炊飯ヒータ４に対する入力が電子回
路ユニット６を介して制御され、設定された一定の炊飯
行程を経て飯が炊き上げられる。When cooking rice, take out the pot 7 from the inner frame 3 1, store the necessary amount of washed white rice and a predetermined amount of water according to the amount of white rice in this w47, and then put the pot 7 inside. It is inserted into the frame 3, its opening is closed with the lid 8, and in this state a start switch (not shown) is turned on manually or by a timer. In response to this, the input to the rice cooking heater 4 is controlled via the electronic circuit unit 6, and the rice is cooked through a preset rice cooking process.
ここで、標準的な炊飯行程の加熱パターンを第４図に示
し、これは時間の経過に伴う鍋の温度変化と、炊飯ヒー
タの入力状態との関係を表したもので、スタートスイッ
チの投入に応じて、まずひたし炊きが行なわれる。この
ひたし炊きにおいては、炊飯ヒータに対し２０’ ｏ（
’ｆ’ −４０’ ｏｎの制御が４回繰返され、さらに
こののち５’ ｏｌ’ｌ’ −４０’ ｏｎ−５’ ２
０’ ｏｌ’ｆ’の制御が行なわれ、このような制御に
より内鍋内の水が適温に加熱され、米粒中に水分が充分
に浸透する。なお、′は時間の秒、′は分を表す。Here, the heating pattern of the standard rice cooking process is shown in Figure 4, which shows the relationship between the temperature change of the pot over time and the input state of the rice cooking heater. Depending on the situation, the rice is cooked first. In this hot cooking, 20'o(
'f'-40' on control is repeated 4 times, and then 5'ol'l'-40'on-5' 2
A control of 0'ol'f' is performed, and by such control, the water in the inner pot is heated to an appropriate temperature, and water is sufficiently permeated into the rice grains. Note that '' represents seconds of time, and ' represents minutes.
このようなひたし炊きは必ずしも必要とするものでなく
、こののちに実質的な炊飯が開始される。Such boiling is not necessarily necessary, and the actual cooking of the rice starts after this.
すなわち、まず炊飯ヒータが連続通電され、この通電に
より鍋の温度が漸次上昇し、その途中つまり鍋の温度が
７０℃から８０℃に上昇する間に鍋内の米量検出が行な
われる。この米量検出は、鍋の温度が７０℃から８０℃
に上昇するまでに要した時間Ｔから割り出される。つま
り、米の量が少ない場合には時間Ｔが短く、米の量が多
い場合には時間Ｔが長くなるから、Ｔ ＜ ５５’のと
きに少量、Ｔ≧５５′のときに多量と判定する。That is, first, the rice cooking heater is continuously energized, and as a result of this energization, the temperature of the pot gradually rises, and during this process, that is, while the temperature of the pot rises from 70° C. to 80° C., the amount of rice in the pot is detected. This amount of rice is detected when the temperature of the pot is between 70℃ and 80℃.
It is determined from the time T required for the temperature to rise to . In other words, when the amount of rice is small, the time T is short, and when the amount of rice is large, the time T is long. Therefore, when T <55', it is determined that the amount is small, and when T ≥ 55', it is determined that the amount is large. .
また鍋が９４℃に達した時点に沸騰検知が開始される。Also, boil detection starts when the pot reaches 94°C.
この沸騰検知は、鍋内の水が沸騰しかけると、その気化
潜熱で鍋の温度上昇が抑制される点を利用して行なわれ
る。つまり、鍋が９４℃に達してからのちのＰｏ時点か
ら、米量が少量の場合には６０′経過後、同じく多量の
場合には２’ ２０’経過後の時点に鍋の温度上昇が５
ｄｅｇ以下となる時点を検知し、この検知をもって鍋
内の水が沸騰したものと判定する。This boiling detection is performed by utilizing the fact that when the water in the pot starts to boil, its latent heat of vaporization suppresses the temperature rise of the pot. In other words, from point Po after the pot reaches 94°C, the temperature of the pot will rise by 5' after 60' if the amount of rice is small, or 2'20' if the amount is large.
The point in time when the temperature becomes lower than deg is detected, and upon this detection, it is determined that the water in the pot has boiled.
このような沸騰検知が行なわれたのちには、炊飯ヒータ
に対し８０’ ｏｆ’ｆ’ −８０’ ｏｎの制御（安
定制御）が行なわれ、これにより鍋内の水の沸騰が安定
して継続する。After such boiling detection is performed, the rice cooking heater is controlled to be 80'off'f'-80' on (stability control), so that the water in the pot continues to boil stably. do.
このような沸騰の継続により鍋内の水がほぼ蒸発し尽く
して鍋の温度上昇が再び開始した時点に炊飯ヒータに対
する入力が２０’ ｏｆＴ −１０’ ｏｎの制御（炊
き上げ制御）に切換えられ、このような制御により鍋の
温度が上昇し、設定された炊き上げ温度である １２０
℃に達した時点に炊飯が完了する。Due to the continuation of such boiling, when the water in the pot has almost completely evaporated and the temperature of the pot starts to rise again, the input to the rice cooking heater is switched to 20' of T -10' on control (cooking control), Through this control, the temperature of the pot rises and reaches the set cooking temperature.120
Cooking is complete when the temperature reaches ℃.
そしてこののち内鍋が水の沸騰時とほぼ同等の温度に保
たれ、内部の飯がむらされ、さらにこのむらし後に第３
図に示す保温ヒータ９．１０を介して保温される。After this, the inner pot is kept at almost the same temperature as when water is boiling, the rice inside is steamed, and after this steaming, a third
The temperature is maintained through the heat-retaining heaters 9 and 10 shown in the figure.
このような標学的な炊飯行程の加熱パターンで炊飯をし
た場合には、焦げのほとんどつかない飯が炊き上る。こ
れに対し、焦げつきの飯を得ようとする場合には、その
設定操作を行なって第５図に示す炊飯行程の加熱パター
ンで炊飯する。When rice is cooked using such a targeted heating pattern in the rice cooking process, the rice is cooked with almost no burnt. On the other hand, when it is desired to obtain burnt rice, the setting operation is performed and the rice is cooked according to the heating pattern of the rice cooking process shown in FIG.
この炊飯行程の加熱パターンにおいては、沸騰検知後の
安定制御の区間においても炊飯ヒータに対する入力が連
続通電状態に保持され、これにより白米が強く加熱され
、焦げのついた飯が炊き上る。In the heating pattern of this rice cooking process, the input to the rice cooking heater is maintained in a continuous energized state even during the period of stable control after boiling is detected, and as a result, the white rice is heated strongly and the burnt rice is cooked.
（発明が解決しようとする課題）
ところが、このように安定制御の区間で炊飯ヒータを連
続通電してしまうと、鍋内に水が貯留する状態での沸騰
継続時間が短縮し、この結果、焦げが良好につくものの
往々にして含水率の低い飯、つまり所謂芯の残った飯が
炊き上ってしまう難点がある。(Problem to be solved by the invention) However, if the rice cooking heater is continuously energized during the stable control period, the boiling duration time will be shortened while water remains in the pot, resulting in burnt rice. However, the problem is that rice with a low moisture content, that is, rice with so-called core remaining, is often cooked.
この発明はこのような点に着目してなされたもので、良
好な焦げがつき、かつ芯残りのない美味な飯を炊き上げ
ることが可能な電気炊飯器を提供することにある。This invention has been made with attention to these points, and an object of the present invention is to provide an electric rice cooker that can cook delicious rice that is well browned and has no leftover core.
［発明の構成］
（課題を解決するための手段）
この発明はこのような目的を達成するために、炊飯用の
鍋と、この鍋を加熱する炊飯ヒータと、鍋の温度を検知
する検知手段と、鍋の温度に応じて炊飯ヒータに対する
入力を制御する制御手段とを具備し、前記制御手段によ
り、炊飯の開始から鍋内の水が沸騰するまでは炊飯ヒー
タを連続通電し、沸騰後には前記炊飯ヒータの通電率を
落して′沸騰を継続させ、鍋内の水がほぼ蒸発し尽くし
た後に前記炊飯ヒータを再び連続通電して鍋の温度を炊
き上げ温度にまで上昇させるようにしたものである。[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a rice cooking pot, a rice cooking heater for heating the pot, and a detection means for detecting the temperature of the pot. and a control means for controlling input to the rice-cooking heater according to the temperature of the pot, and the control means continuously energizes the rice-cooking heater from the start of rice cooking until the water in the pot boils, and after boiling, the rice-cooking heater is continuously energized. The energization rate of the rice-cooking heater is reduced to continue boiling, and after the water in the pot has almost completely evaporated, the rice-cooking heater is continuously energized again to raise the temperature of the pot to the cooking temperature. It is.
（作 用）
焦げつきの飯を炊く場合に、鍋内の水が沸騰してほぼ蒸
発し尽くすまでの行程は標準の炊飯行程の場合と同じで
あるから、鍋内に水が貯留する状態での沸騰継続時間が
所定時間保たれ、したがって米に対し充分な含水率が確
保される。そして水がほぼ蒸発し尽くしたのちの炊き上
げ制御区間において炊飯ヒータの通電率が増大するため
、この区間で米が強く加熱され、焦げのついた飯が炊き
Ｌる。このように含水率を高めたのちに米を強く加熱す
るため、焦げが程よくつき、かつ芯の残らない美味な飯
となる。(Function) When cooking burnt rice, the process from when the water in the pot boils to almost evaporates is the same as the standard rice cooking process, so it is The boiling duration is maintained for a predetermined time, thus ensuring sufficient moisture content for the rice. Since the energization rate of the rice cooking heater increases in the cooking control section after almost all the water has evaporated, the rice is heated strongly in this section, and the rice is cooked evenly. After increasing the moisture content in this way, the rice is heated strongly, resulting in delicious rice that is just the right amount of char and has no core left behind.
（実施例） 以下、この発明の実施例について説明する。(Example) Examples of the present invention will be described below.
第２図において１１は炊飯器本体１の前面に設けられた
操作パネルで、この操作パネル１１に、現在時刻、タイ
マのセット状態、炊飯メニューなどを表示する各種の表
示部１２・・・、および時刻合せ用、予約設定用、炊飯
メニュー選択用、その取消し用、スタート用の各種の操
作キー１３・・・が設けられ、さらに白米を炊飯する際
にその炊き上り状態を標準と焦げつきに選択する操作ダ
イヤル１４が設けられている。In FIG. 2, reference numeral 11 denotes an operation panel provided on the front of the rice cooker main body 1. On this operation panel 11, there are various display sections 12 for displaying the current time, timer setting status, rice cooking menu, etc., and Various operation keys 13 are provided for setting the time, setting a reservation, selecting a rice cooking menu, canceling the rice cooking menu, and starting the cooking menu, and furthermore, when cooking white rice, the cooked state can be selected between normal and burnt. An operation dial 14 is provided.
そして前記操作ダイヤル１４を標準に合せた場合には、
前述の第４図に示す加熱パターンにより炊飯され、はと
んど焦げのつかない飯が炊き上る。When the operation dial 14 is set to the standard,
Rice is cooked according to the heating pattern shown in FIG. 4 described above, and the rice is cooked without burning.
これに対し、操作ダイヤル１４を焦げつきに合せた場合
には、炊飯ヒータに対する入力が第１図に示す加熱パタ
ーンに沿うように制御される。この加熱パターンにおい
ては、ひたし炊きから鍋内の水が沸騰してほぼ蒸発し尽
くすまでの行程は、標準の炊飯行程の場合と同じである
が、水がほぼ蒸発し尽くしたのちの炊き上げ制御の区間
において、標準の炊飯行程では２０’ ｏｆｌ’ −１
０’ ｏｎの断続通電であるのに対し、これが連続通電
に切換られる。On the other hand, when the operation dial 14 is set to burn the rice, the input to the rice cooking heater is controlled so as to follow the heating pattern shown in FIG. In this heating pattern, the process from soaking until the water in the pot boils and almost evaporates is the same as the standard rice cooking process, but the cooking process is controlled after the water has almost completely evaporated. In the interval of 20'ofl'-1 in the standard rice cooking process
0' on, which is intermittent energization, is switched to continuous energization.
このような加熱パターンにおいては、安定側、御の区間
での炊飯ヒータの制御が標準の炊飯行程の加熱パターン
と同様に断続通電であるから、鍋内に水が貯留する状態
での沸騰継続時間が所定時間保たれ、したがって米に対
し充分な含水率が確保される。そして安定制御ののちの
炊き上げ制御区間において、炊飯ヒータの通電率が増大
するため、この区間で米が強く加熱され、焦げのついた
飯が炊きＬる。In such a heating pattern, the control of the rice cooking heater in the stable side and control section is intermittently energized as in the heating pattern of the standard rice cooking process, so the duration of boiling when water is stored in the pot is is maintained for a certain period of time, thus ensuring sufficient moisture content for the rice. Then, in the cooking control section after the stability control, the energization rate of the rice cooking heater increases, so that the rice is heated strongly in this section, and the rice is cooked even if it is burnt.
このように含水率を高めたのちに米を強く加熱するため
、焦げが程よくつき、かつ芯の残らない美味な飯を炊き
」二げることかできる。Since the rice is heated strongly after increasing its moisture content in this way, it is possible to cook delicious rice that is just the right amount of char and has no core left behind.
［発明の効果］
以−ヒ説明したようにこの発明によれば、焦げつきの飯
を炊飯する場合に、芯の残ることのない美味な焦げつき
の飯を炊き上げることができるという効果を奏する。[Effects of the Invention] As explained below, according to the present invention, when cooking charred rice, it is possible to cook delicious charred rice without any core remaining.
第１図はこの発明の一実施例による電気炊飯器で焦げつ
きの飯を炊き上げる際の炊飯行程を示すグラフ図、第２
図は同電気炊飯器に設けられた操作パネルの正面図、第
３図は電気炊飯器の一般的な構造を示す断面図、第４図
は標準的な炊飯行程を示すグラフ図、第５図は従来の電
気炊飯器で焦げつきの飯を炊き上げる際の炊飯行程を示
すグラフ図である。
４・・・炊飯ヒータ、５・・・温度検知器、６・・・電
子回路ユニット。
出願人代理人 弁理士 鈴ル武彦Fig. 1 is a graph diagram showing the rice cooking process when cooking burnt rice using an electric rice cooker according to an embodiment of the present invention;
The figure is a front view of the operation panel installed in the electric rice cooker, Figure 3 is a sectional view showing the general structure of the electric rice cooker, Figure 4 is a graph diagram showing the standard rice cooking process, and Figure 5 is a graph diagram showing a rice cooking process when cooking burnt rice with a conventional electric rice cooker. 4...Rice cooking heater, 5...Temperature detector, 6...Electronic circuit unit. Applicant's agent Patent attorney Takehiko Suzuru
Claims (1)
度を検知する検知手段と、鍋の温度に応じて炊飯ヒータ
に対する入力を制御する制御手段とを具備し、前記制御
手段により、炊飯の開始から鍋内の水が沸騰するまでは
炊飯ヒータを連続通電し、沸騰後には前記炊飯ヒータの
通電率を落して沸騰を継続させ、鍋内の水がほぼ蒸発し
尽くした後に前記炊飯ヒータを再び連続通電して鍋の温
度を炊き上げ温度にまで上昇させる加熱パターンの設定
を可能にしたことを特徴とする電気炊飯器。The rice cooking pot includes a rice cooking pot, a rice cooking heater for heating the pot, a detection means for detecting the temperature of the pot, and a control means for controlling input to the rice cooking heater according to the temperature of the pot, and the control means: The rice cooking heater is continuously energized from the start of rice cooking until the water in the pot boils, and after boiling, the energization rate of the rice cooking heater is lowered to continue boiling, and after the water in the pot has almost completely evaporated, the rice cooking starts. An electric rice cooker characterized in that it is possible to set a heating pattern in which the heater is continuously energized again to raise the temperature of the pot to the cooking temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14738788A JPH01314513A (en) | 1988-06-15 | 1988-06-15 | Electric rice cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14738788A JPH01314513A (en) | 1988-06-15 | 1988-06-15 | Electric rice cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01314513A true JPH01314513A (en) | 1989-12-19 |
Family
ID=15429106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14738788A Pending JPH01314513A (en) | 1988-06-15 | 1988-06-15 | Electric rice cooker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01314513A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10248716A (en) * | 1997-03-10 | 1998-09-22 | Rinnai Corp | Rice cooking method and rice cooker |
| JPH11299643A (en) * | 1998-04-15 | 1999-11-02 | Osaka Gas Co Ltd | Rice cooker |
| JP2016214705A (en) * | 2015-05-25 | 2016-12-22 | 三菱電機株式会社 | rice cooker |
-
1988
- 1988-06-15 JP JP14738788A patent/JPH01314513A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10248716A (en) * | 1997-03-10 | 1998-09-22 | Rinnai Corp | Rice cooking method and rice cooker |
| JPH11299643A (en) * | 1998-04-15 | 1999-11-02 | Osaka Gas Co Ltd | Rice cooker |
| JP2016214705A (en) * | 2015-05-25 | 2016-12-22 | 三菱電機株式会社 | rice cooker |
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