JP2537116B2 - rice cooker - Google Patents
rice cookerInfo
- Publication number
- JP2537116B2 JP2537116B2 JP4214375A JP21437592A JP2537116B2 JP 2537116 B2 JP2537116 B2 JP 2537116B2 JP 4214375 A JP4214375 A JP 4214375A JP 21437592 A JP21437592 A JP 21437592A JP 2537116 B2 JP2537116 B2 JP 2537116B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- rice
- rice cooker
- heating
- cooker
- 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 - Fee Related
Links
- 235000007164 Oryza sativa Nutrition 0.000 title claims description 119
- 235000009566 rice Nutrition 0.000 title claims description 119
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims description 118
- 238000010438 heat treatment Methods 0.000 claims description 36
- 238000010411 cooking Methods 0.000 claims description 26
- 238000009835 boiling Methods 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 description 5
- 235000013339 cereals Nutrition 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
Landscapes
- Cookers (AREA)
Description
【０００１】[0001]
【産業上の利用分野及び発明の概要】本発明は、炊飯
器、特に、炊飯開始時点から炊飯終了時点までの間で炊
飯火力を変化させる形式の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, and more particularly to a rice cooker of a type in which the rice cooking power is changed from the start of rice cooking to the end of rice cooking.
【０００２】[0002]
【従来技術及び課題】上記した形式のものとして、炊飯
釜内の温度が炊飯完了温度に近付いた時点で、一旦、火
力を弱める形式の炊飯器があり、大略図１に示す構成を
採用する。このものでは、炊飯釜(1) の底部の温度を温
度センサ(S) によって検知する。一方、炊飯釜(1) を加
熱するガスバーナ(10)は前記炊飯釜(1) の底部に対向
し、これへのガス回路には、開閉弁(21)を具備する主ガ
ス回路(2a)と、これを迂回するバイパス回路(2b)が設け
られ、このバイパス回路(2b)にはオリフィス(22)が挿入
されている。そして、前記開閉弁(21)は、温度センサ
(S) の検知温度を入力させた制御装置(C) によって制御
される。2. Description of the Related Art As the above-described type, there is a type of rice cooker in which the heating power is temporarily weakened when the temperature in the rice cooker approaches the temperature at which the rice is cooked. In this case, the temperature of the bottom of the rice cooker (1) is detected by the temperature sensor (S). On the other hand, the gas burner (10) for heating the rice cooker (1) faces the bottom of the rice cooker (1), and the gas circuit to this is connected to the main gas circuit (2a) equipped with the on-off valve (21). A bypass circuit (2b) that bypasses this is provided, and an orifice (22) is inserted in this bypass circuit (2b). The on-off valve (21) is a temperature sensor.
It is controlled by the control unit (C) that inputs the temperature detected by (S).
【０００３】この従来の炊飯器では、炊飯開始後は、開
閉弁(21)が開弁された状態でガスバーナ(10)にガス供給
され、ガスバーナ(10)の火力はノズル(N) の口径によっ
て設定される供給ガス量に対応したものとなる。つま
り、強火によって炊飯加熱が実行される。このときの炊
飯釜(1) の底部の温度が温度センサ(S) によって検知さ
れ、この検知温度が炊飯加熱終了温度（以下第２温度(A
2)という）よりも一定温度低く且沸騰温度以上の設定温
度（以下第１温度(A1)という）に達すると、制御装置
(C) の作用によって開閉弁(21)が閉弁された状態で炊飯
加熱が進行する。このとき、オリフィス(22)によってガ
スバーナ(10)へのガス量が制限されてガスバーナ(10)の
火力は弱火となる。In this conventional rice cooker, after the rice is cooked, gas is supplied to the gas burner (10) with the opening / closing valve (21) opened, and the heating power of the gas burner (10) depends on the diameter of the nozzle (N). It corresponds to the set supply gas amount. In other words, the cooked rice is heated by high heat. The temperature of the bottom of the rice cooker (1) at this time is detected by the temperature sensor (S), and this detected temperature is the temperature at which the rice heating is completed (hereinafter referred to as the second temperature (A
2 )) and a set temperature (below referred to as the first temperature (A 1 )) lower than the constant temperature and above the boiling temperature by the control device.
By the action of (C), the rice cooking heating proceeds with the on-off valve (21) closed. At this time, the amount of gas to the gas burner (10) is limited by the orifice (22), and the heating power of the gas burner (10) becomes weak.
【０００４】従って、図２のように、炊飯釜(1) 内が第
１温度(A1)から第２温度(A2)になるまでの区間では、炊
飯釜(1) 内の温度上昇勾配が小さくなり、上記制御を行
なわない場合に比べて炊飯釜(1) 内が高温域に維持され
る時間が長くなる。つまり、炊飯加熱停止時期を遅らせ
ることができることとなって、その分、α化時間（炊飯
中の米の温度を98℃以上に維持させてその澱粉質をα澱
粉に変化させる時間）が長く設定でき、炊飯の炊き上り
が向上する。Therefore, as shown in FIG. 2, in the section from the first temperature (A 1 ) to the second temperature (A 2 ) in the rice cooker (1), the temperature rising gradient in the rice cooker (1) is increased. Becomes smaller, and the time in which the inside of the rice cooker (1) is maintained in the high temperature region becomes longer than in the case where the above control is not performed. In other words, the rice cook heating stop time can be delayed, and the α-formation time (the time to change the starch quality to α-starch by maintaining the temperature of rice during cooking at 98 ° C or higher) is set accordingly. This improves the cooked rice.
【０００５】ところが、この従来のものでも、α化時間
が未だ十分には長くできないという問題がある。本発明
は、『温度センサ(S) によって炊飯加熱中の炊飯釜(1)
内の温度を検知し、この検知温度が炊飯加熱終了温度に
対応する第２温度(A2)になった時点で炊飯加熱を停止す
るようにした炊飯器』において、α化時間を一層長くで
きるようにして、炊き上りを向上させることをその課題
とする。However, even this conventional one has a problem that the α-formation time cannot be sufficiently long. INDUSTRIAL APPLICABILITY The present invention relates to a rice cooker (1) which is heating rice with a temperature sensor (S).
In the rice cooker that detects the temperature inside and stops heating the rice when the detected temperature reaches the second temperature (A 2 ) that corresponds to the heating end temperature for cooking rice, the α conversion time can be further extended. In this way, the task is to improve cooking.
【０００６】[0006]
【技術的手段】上記課題を解決するために講じた本発明
の技術的手段は、『温度センサ(S) の検知温度が第２温
度(A2)よりも一定温度低く且沸騰温度以上の第１温度(A
1)において炊飯加熱を一旦停止し且この後設定時間(T)
の経過後に炊飯加熱を再開させる制御装置(C1)を具備さ
せ、炊飯米量に応じて前記設定時間(T) を演算する演算
装置(C2)を設けて、この演算装置(C2)の出力を前記制御
装置(C1)に入力させた』ことである。[Technical Means] The technical means of the present invention taken to solve the above-mentioned problem is that the temperature detected by the temperature sensor (S) is lower than the second temperature (A 2 ) by a constant temperature and is equal to or higher than the boiling temperature. 1 temperature (A
In 1 ), stop cooking rice heating and then set time (T).
After the lapse of time, a control device (C 1 ) for resuming cooking rice heating is provided, and a calculation device (C 2 ) for calculating the set time (T) according to the amount of cooked rice is provided, and this calculation device (C 2 ) The output of the above is input to the control device (C 1 ) ”.
【０００７】[0007]
【作用】上記技術的手段は次のように作用する。温度セ
ンサ(S) の検知温度が第２温度(A2)になった時点で最終
的に炊飯加熱が停止されることは従来の炊飯器と同様で
あるが、その以前において温度センサ(S) の検知温度が
第１温度(A1)になると、制御装置(C1)の出力によって炊
飯加熱が一旦停止される。その後、この炊飯加熱停止状
態が(C2)によって設定された設定時間(T) だけ経過する
と、炊飯加熱が再開されて温度センサ(S) の検知温度が
第２温度(A2)になるまで炊飯加熱が進行する。The above technical means operates as follows. It is the same as the conventional rice cooker that the heating of the cooked rice is finally stopped when the temperature detected by the temperature sensor (S) reaches the second temperature (A 2 ), but before that, the temperature sensor (S) When the detected temperature of No. 1 reaches the first temperature (A 1 ), the heating of the cooked rice is temporarily stopped by the output of the control device (C 1 ). After that, when the cooking rice heating stopped state has passed for the set time (T) set by (C 2 ), the cooking rice heating is restarted until the temperature detected by the temperature sensor (S) reaches the second temperature (A 2 ). Cooking rice heating progresses.
【０００８】以上の加熱制御の場合、温度センサ(S) の
検知温度が第１温度(A1)になったとき、加熱が停止され
るから、炊飯釜(1) 内の温度は一旦降下したあと再加熱
によって第２温度(A2)にまで高められる。従って、第１
温度(A1)になった時点で弱火加熱に制御されるものにく
らべて、第１温度(A1)になった時点から第２温度(A2)に
なるまでの所要時間が長くなると共に、この所要時間が
炊飯米量に対応したものとなるから、炊飯米量の多寡に
拘らず、十分なα化所要時間が確保できる。In the above heating control, when the temperature detected by the temperature sensor (S) reaches the first temperature (A 1 ), the heating is stopped, so the temperature in the rice cooker (1) temporarily drops. It is then raised to the second temperature (A 2 ) by reheating. Therefore, the first
Compared to those controlled by the low heat heating when it becomes the temperature (A 1), with the time required from when it becomes the first temperature (A 1) to a second temperature (A 2) is long Since this required time corresponds to the amount of cooked rice, sufficient α required time can be secured regardless of the amount of cooked rice.
【０００９】[0009]
【効果】第１温度(A1)になった時点から第２温度(A2)に
なるまでの所要時間が長くなるから、α化時間が長くな
り、炊き上りが一層向上する。また、炊飯米量の多寡に
拘らず十分なα化時間が確保できるから炊飯米量が多く
ても少くても良好な炊き上がりが確保できる。[Effect] Since the time required to reach the second temperature (A 2 ) from the time when the temperature reaches the first temperature (A 1 ) becomes long, the α-formation time becomes longer and the cooked-up temperature is further improved. Further, regardless of the amount of cooked rice, sufficient α-izing time can be secured, so that good cooked rice can be secured regardless of whether the amount of cooked rice is large or small.
【００１０】[0010]
【実施例】以下、本発明の実施例を図３〜図５に基づい
てて説明する。図面に示す実施例は、本発明をガス炊飯
器に実施したものであり、炊飯釜(1)内の温度はこれの
底部に対接させた温度センサ(S) によって検知される。
炊飯釜(1) はガスバーナ(10)によって加熱される構成
で、このガスバーナ(10)へのガス回路には後述の制御装
置(C) からの出力によって開閉制御される電磁式の開閉
弁(21)が挿入されている。ガスバーナ(10)の炎孔近傍に
はイグナイター(3) のスパークプラグ(31)が対向し、こ
のイグナイター(3) は、同様に制御装置(C) によって制
御され、制御装置(C) に点火信号が入力されると一定時
間動作する。Embodiments of the present invention will be described below with reference to FIGS. In the embodiment shown in the drawings, the present invention is applied to a gas rice cooker, and the temperature inside the rice cooker (1) is detected by a temperature sensor (S) placed in contact with the bottom of the rice cooker.
The rice cooker (1) is configured to be heated by the gas burner (10), and the gas circuit to this gas burner (10) has an electromagnetic on-off valve (21) that is controlled to open and close by the output from the control unit (C) described later. ) Is inserted. The spark plug (31) of the igniter (3) faces near the flame hole of the gas burner (10), and this igniter (3) is also controlled by the control device (C), and the ignition signal is sent to the control device (C). When is input, it operates for a fixed time.
【００１１】また、この実施例では、ガスバーナ(10)の
燃焼量は一定に設定されており、上記設定時間(T) を演
算する演算装置(C2)としては、炊飯開始後(S) の検知温
度が炊飯釜内の沸騰温度に達するまでの所要時間(T1)に
よって炊飯米量の多寡を演算して、これに基いて前記設
定時間(T) が炊飯米量に反比例するように演算されてい
る。Further, in this embodiment, the combustion amount of the gas burner (10) is set to a constant value, and the computing device (C 2 ) for computing the set time (T) is the one after the start of rice cooking (S). The amount of cooked rice is calculated based on the time required for the detected temperature to reach the boiling temperature in the rice cooker (T 1 ), and based on this, the set time (T) is calculated to be inversely proportional to the amount of cooked rice. Has been done.
【００１２】この演算方法について詳述すると次のとお
りとなる。炊飯開始時点の温度センサ(S) の検知温度を
初期検知温度(S1)とし、この時点から炊飯の進行に伴っ
て炊飯釜(1) 内の沸騰温度に対応する設定温度(S2)（例
えば100 ℃）になるまでの経過時間(T1)とする。ところ
で、炊飯加熱開始時の温度が一定の基準温度(S0)（例え
ば０℃）であり、このときの経過時間が(T0)であれば、
炊飯米量(V) は、前記経過時間(T0)に比例する。つま
り、次式で与えられる。The details of this calculation method are as follows. The temperature detected by the temperature sensor (S) at the start of rice cooking is defined as the initial detection temperature (S 1 ), and from this point onward, the set temperature (S 2 ) (S 2 ) () corresponding to the boiling temperature in the rice cooker (1) For example, it is the elapsed time (T 1 ) until it reaches 100 ° C. By the way, if the temperature at the start of cooking rice heating is a constant reference temperature (S 0 ) (for example, 0 ° C.) and the elapsed time at this time is (T 0 ),
The amount of cooked rice (V) is proportional to the elapsed time (T 0 ). That is, it is given by the following equation.
【００１３】 Ｖ＝K1T0・・・式（但し、K1は比例定数である。） 一方、初期検知温度(S1)が、前記基準温度(S0)よりも高
くなると、炊飯米量(V) が一定であっても、この場合の
前記経過時間(T1)は短くなって（100-S1）／（100-S0）
に比例した値となる。つまり、次式で与えられる。 T1＝T0（100-S1）／（100-S0） この式を上記式に代入すると、炊飯米量(V) は次式に
よって与えられる。V = K 1 T 0 Equation (where K 1 is a proportional constant) On the other hand, when the initial detected temperature (S 1 ) is higher than the reference temperature (S 0 ), cooked rice Even if the amount (V) is constant, the elapsed time (T 1 ) in this case becomes short (100-S 1 ) / (100-S 0 ).
It becomes a value proportional to. That is, it is given by the following equation. T 1 = T 0 (100-S 1 ) / (100-S 0 ) Substituting this equation into the above equation, the amount of cooked rice (V) is given by the following equation.
【００１４】 Ｖ＝K1T1（100-S0）／（100-S1）・・・式 この実施例では、設定時間(T) は、炊飯米量(V) に反比
例させる構成としてあるから、この設定時間(T) は次式
によって与えられる。 Ｔ＝K2／Ｖ （但し、K2は定数） この式に、上記式を代入すると、前記設定時間(T) は
次式で与えられる。V = K 1 T 1 (100-S 0 ) / (100-S 1 ) ... Formula In this embodiment, the set time (T) is inversely proportional to the amount of cooked rice (V). Therefore, this set time (T) is given by the following equation. T = K 2 / V (where K 2 is a constant) When the above equation is substituted into this equation, the set time (T) is given by the following equation.
【００１５】 Ｔ＝K2（100-S1）／K1T1（100-S0）・・・式 基準温度(S0)は予め設定されるものであるから、また、
前記K2及びK1の値は、ガスバーナ(10)の設定燃焼量と、
熱効率によって決定されるものであるから、K2／K1（10
0-S0）の値は予め定数(K) として与えられる。すると、
上記式は、次のように書き換えられる。T = K 2 (100-S 1 ) / K 1 T 1 (100-S 0 ) ... Formula Since the reference temperature (S 0 ) is preset,
The values of K 2 and K 1 are the set combustion amount of the gas burner (10),
Since it is determined by thermal efficiency, K 2 / K 1 (10
The value of 0-S 0 ) is given in advance as a constant (K). Then
The above equation can be rewritten as follows.
【００１６】Ｔ＝Ｋ（100-S1）／T1・・・式 この演算式を実行することにより設定時間(T) が演算さ
れる。この演算式を実行する演算装置(C2)や、既述の制
御装置(C1)を含めて制御装置(C) としてはマイクロコン
ピュータが採用され、図５に示すフローチャートに基づ
いたプログラムが実行される。T = K (100-S 1 ) / T 1 ... Formula The set time (T) is calculated by executing this formula. A microcomputer is adopted as the control device (C) including the calculation device (C 2 ) for executing this calculation formula and the control device (C 1 ) described above, and the program based on the flowchart shown in FIG. 5 is executed. To be done.
【００１７】以下、この制御動作について、同図に基づ
いて説明する。炊飯開始の始動信号が入力されると、炊
飯加熱開始前の温度センサ(S) の初期検知温度(S1)がス
テップ(40)にて記憶される。その後、開閉弁(21)が開弁
され、イグナイター(3) が一定時動作してガスバーナ(1
0)の炎孔部に火花放電され、ガスバーナ(10)が着火して
炊飯加熱が進行する。また、前記イグナイター(3) の動
作停止と同時にタイマー(61)が始動する。（ステップ(4
1)参照）尚、図５には示していないが、前記イグナイタ
ー(3) の動作中にガスバーナ(10)に着火したか否かを判
断し、着火されない場合には開閉弁(21)を閉弁させる形
式の安全装置が装備される。The control operation will be described below with reference to FIG. When the start signal for starting cooking rice is input, the initial detected temperature (S 1 ) of the temperature sensor (S) before starting heating rice is stored in step (40). After that, the on-off valve (21) is opened, the igniter (3) operates for a certain period of time, and the gas burner (1
Spark discharge is generated in the flame hole of (0), the gas burner (10) is ignited, and heating of cooked rice proceeds. Also, the timer (61) is started at the same time when the operation of the igniter (3) is stopped. (Step (4
Although not shown in FIG. 5, it is judged whether or not the gas burner (10) is ignited while the igniter (3) is operating, and if not ignited, the on-off valve (21) is closed. Equipped with a valve-type safety device.
【００１８】炊飯加熱の進行に伴って、図４に示す経過
で、炊飯釜(1) 内の温度が上昇し、この温度は温度セン
サ(S) によって監視される。温度センサ(S) の検知温度
が炊飯釜(1) 内の沸騰温度に対応する設定温度(S2)（例
えば100 ℃）になったときの前記タイマー(61)の経過時
間(T1)を記憶し、このタイマー(61)をオフにする。As the cooking rice heating progresses, the temperature in the rice cooker (1) rises as shown in FIG. 4, and this temperature is monitored by the temperature sensor (S). Set the elapsed time (T 1 ) of the timer (61) when the temperature detected by the temperature sensor (S) reaches the set temperature (S 2 ) corresponding to the boiling temperature in the rice cooker (1) (eg 100 ℃). Remember, turn off this timer (61).
【００１９】その後、ステップ(42)では、記憶されてい
た前記経過時間(T1)及び初期検知温度(S1)に基いてＴ＝
Ｋ（100-S1）／T1の演算を行い、この演算値としての設
定時間(T) が記憶される。この後、温度センサ(S) の検
知温度が監視され、この検知温度が第１温度(A1)なる
と、ステップ(43)においてこれが判定されて開閉弁(21)
が閉弁され、タイマー(62)が「オン」となり、炊飯加熱
停止状態が継続する。Thereafter, in step (42), T = T based on the stored elapsed time (T 1 ) and initial detected temperature (S 1 ).
K (100-S 1 ) / T 1 is calculated, and the set time (T) as this calculated value is stored. After that, the temperature detected by the temperature sensor (S) is monitored, and when this detected temperature reaches the first temperature (A 1 ), this is judged in step (43) and the on-off valve (21)
Is closed, the timer (62) is turned on, and the cooked rice heating stopped state continues.
【００２０】この炊飯加熱停止状態の継続時間は前記タ
イマー(62)の経過時間に一致し、この経過時間が前記設
定時間(T) に一致すると、ステップ(44)からステップ(4
5)までのフローに相当する再点火動作が実行されて炊飯
加熱が再開される。これにより、炊飯釜(1) 内の温度が
再上昇して温度センサ(S) の検知温度が第２温度(A2)に
なると開閉弁(21)が閉弁されて炊飯加熱が停止される。The duration of this rice cooking heating stopped state matches the elapsed time of the timer (62), and when this elapsed time matches the set time (T), the steps (44) to (4)
The re-ignition operation corresponding to the flow up to 5) is executed and the cooking rice heating is restarted. As a result, when the temperature inside the rice cooker (1) rises again and the temperature detected by the temperature sensor (S) reaches the second temperature (A 2 ), the on-off valve (21) is closed and heating of rice cooking is stopped. .
【００２１】尚、この実施例では、ステップ(41)〜ステ
ップ(45)までが制御装置(C1)として機能し、ステップ(4
0)と、ステップ(41)からステップ(42)までのフローに相
当する構成が上記制御装置(C2)として機能する。また、
第１温度(A1)＝125 ℃、第２温度(A2)＝145 ℃に設定さ
れ、一旦、炊飯加熱を停止したあと、再加熱を実行する
までの時間、つまり、既述の設定時間(T) は１分〜３分
程度に設定される。In this embodiment, steps (41) to (45) function as the control device (C 1 ) and step (4)
0) and a configuration corresponding to the flow from step (41) to step (42) function as the control device (C 2 ). Also,
The first temperature (A 1 ) = 125 ℃, the second temperature (A 2 ) = 145 ℃, the time until the rice is reheated after the rice cooking heating is stopped, that is, the previously set time. (T) is set to about 1 to 3 minutes.
【００２２】この条件の場合、再点火温度は100 ℃以上
が望ましい。又、この実施例のガス炊飯器と既述の従来
のガス炊飯器とを比較した場合、従来のものでは、弱火
加熱状態で炎の安定性を確保するために、種火バーナ(1
1)（図１参照）が必要となるが、本発明はガスバーナ(1
0)を一旦消火したあと再点火させるものであるから、ガ
ス回路に前記(11)のための回路を容易する必要がない。
又、オリフィス(22)等も不要となる。Under this condition, the reignition temperature is preferably 100 ° C. or higher. Further, when comparing the gas rice cooker of this example with the conventional gas rice cooker described above, in the conventional one, in order to secure the stability of the flame in the low heat heating state, the pilot burner (1
1) (see FIG. 1) is required, the present invention is a gas burner (1
Since (0) is once extinguished and then re-ignited, there is no need to provide a circuit for (11) in the gas circuit.
Further, the orifice (22) and the like are also unnecessary.
【００２３】これらのことから、本発明実施例のガス炊
飯器では従来のものに比べてガス回路の構成が大幅に簡
素化できる。尚、上記実施例では、本発明をガス炊飯器
に実施したがこれを電気炊飯器に実施できることは言う
までもない。また、上記実施例では、設定時間（Ｔ）を
炊飯米量に反比例させたが、炊飯器の形式によっては、
他の関係に設定しても良い。上記実施例のように設定時
間（Ｔ）を炊飯米量に反比例させた場合には次の利点が
ある。即ち、炊飯米量が少ない場合は炊飯釜（１）内の
水分が早期に蒸発する。従って、かかる場合、図４の想
像線のグラフに示すように、炊飯釜（１）内が沸騰して
からその温度が第１温度（Ａ１）に昇温するまでの沸騰
加熱（Ｔ２）は標準量炊飯時の沸騰加熱（Ｔ３）よりも
短くなる（沸騰加熱（Ｔ２）＜沸騰加熱（Ｔ３））。よ
って、炊飯米量に関わらず設定時間（Ｔ）を一定にする
と、炊飯釜（１）内が沸騰してから炊飯が完了するまで
の間、即ち、炊飯釜（１）内を高温（通常は９８℃以
上）に保つことにより米粒のα化を図る為の時間は炊飯
米量の減少に伴って短くなる。そして、このように米粒
のα化を図る時間が短くなると、炊き上がった米飯の食
味が低下する。これに対し、設定時間（Ｔ）を炊飯米量
に反比例させる上記実施例の炊飯器では、炊飯米量が少
ない場合（図４の想像線のグラフ参照）には炊飯釜
（１）内が第１温度（Ａ１）に昇温した後に於けるガス
バーナ（１０）の消火時間たる第１設定時間（Ｔ６）
は、同図の実線で示す標準量炊飯時に比べて長くなる。
即ち、少量炊飯の場合は既述したように炊飯釜（１）内
の水分を蒸発させるのに要する沸騰加熱（Ｔ２）が短く
なるのとは逆に前記第１設定時間（Ｔ６）が長くなって
α化の為に米粒を高温に保つ時間が全体として短くなら
ないのである。よって、設定時間（Ｔ）を炊飯米量に反
比例させる上記実施例の炊飯器では、炊飯米量の多寡に
拘らず、ほぼ一定のα化時間が確保できることとなる。From the above, in the gas rice cooker of the embodiment of the present invention, the configuration of the gas circuit can be greatly simplified as compared with the conventional one. In addition, in the said Example, although this invention was implemented in the gas rice cooker, it cannot be overemphasized that this can be implemented in an electric rice cooker. Further, in the above embodiment, the set time (T) was made inversely proportional to the amount of cooked rice, but depending on the type of cooker,
It may be set to another relationship. When the set time (T) is made inversely proportional to the amount of cooked rice as in the above embodiment, the following advantages can be obtained. That is, when the amount of cooked rice is small, the water in the rice cooker (1) evaporates early. Therefore, in such a case, as shown in the graph of the imaginary line in FIG. 4, boiling heating (T 2 ) from the boiling of the inside of the rice cooker (1) until the temperature rises to the first temperature (A 1 ). Is shorter than the boiling heat (T 3 ) when cooking a standard amount of rice (boiling heat (T 2 ) <boiling heat (T 3 )). Therefore, if the set time (T) is kept constant regardless of the amount of cooked rice, the temperature in the cooker (1) is high (usually in the cooker (1)) after boiling in the cooker (1). By keeping the temperature above 98 ° C.), the time required for gelatinization of rice grains becomes shorter as the amount of cooked rice decreases. When the time for converting the rice grains into α is shortened in this way, the taste of cooked cooked rice is deteriorated. On the other hand, in the rice cooker of the above embodiment in which the set time (T) is inversely proportional to the amount of cooked rice, when the amount of cooked rice is small (see the phantom line graph in FIG. 4), the inside of the rice cooker (1) is First set time (T6) which is the extinguishing time of the gas burner (10) after the temperature is raised to 1 temperature (A 1 ).
Is longer than the standard amount of rice cooked as shown by the solid line in the figure.
That is, in the case of a small amount of rice cooked, the boiling time (T 2 ) required to evaporate the water in the rice cooker (1) is shortened as described above, while the first set time (T6) is long. As a result, the time for keeping rice grains at a high temperature is not shortened as a whole due to the gelatinization. Therefore, in the rice cooker of the above embodiment in which the set time (T) is inversely proportional to the amount of cooked rice, it is possible to secure a substantially constant α-formation time regardless of the amount of cooked rice.
【図面の簡単な説明】[Brief description of drawings]
【図１】従来例の説明図FIG. 1 is an explanatory diagram of a conventional example.
【図２】これの炊飯工程における炊飯釜(1) 内の温度変
化を示す説明図[Fig. 2] An explanatory view showing temperature changes in the rice cooker (1) in the rice cooking process.
【図３】本発明実施例の説明図FIG. 3 is an explanatory diagram of an embodiment of the present invention.
【図４】これの炊飯工程における炊飯釜(1) 内の温度変
化を示す説明図FIG. 4 is an explanatory view showing a temperature change in the rice cooker (1) in the rice cooking process.
【図５】制御装置(C) のフローチャート図FIG. 5 is a flowchart of the control device (C).
(1) ・・・炊飯釜 (S) ・・・温度センサ (A2)・・・第２温度 (C1)・・・制御装置 (1) ・・・ガスバーナ (21)・・・開閉弁(1) ・ ・ ・ Rice cooker (S) ・ ・ ・ Temperature sensor (A 2 ) ・ ・ ・ Second temperature (C 1 ) ・ ・ ・ Control device (1) ・ ・ ・ Gas burner (21) ・ ・ ・ Open / close valve
Claims (4)
飯釜(1) 内の温度を検知し、この検知温度が炊飯加熱終
了温度に対応する第２温度(A2)になった時点で炊飯加熱
を停止するようにした炊飯器において、温度センサ(S)
の検知温度が第２温度(A2)よりも一定温度低く且沸騰温
度以上の第１温度(A1)において炊飯加熱を一旦停止し且
この後設定時間(T) の経過後に炊飯加熱を再開させる制
御装置(C1)を具備させ、炊飯米量に応じて前記設定時間
(T) を演算する演算装置(C2)を設けて、この演算装置(C
2)の出力を前記制御装置(C1)に入力させた炊飯器。1. The temperature sensor (S) detects the temperature inside the rice cooker (1) while heating the rice, and when the detected temperature reaches the second temperature (A 2 ) corresponding to the rice heating end temperature. In a rice cooker that stops heating rice, a temperature sensor (S)
The cooking temperature is temporarily stopped at the first temperature (A 1 ) that is lower than the second temperature (A 2 ) by a certain temperature and is higher than the boiling temperature, and then the rice cooking heating is restarted after the elapse of the set time (T). Equipped with a control device (C 1 ) that allows the set time according to the amount of cooked rice.
An arithmetic unit (C 2 ) for calculating (T) is provided, and this arithmetic unit (C
Rice cooker in which the output of 2 ) is input to the control device (C 1 ).
100 ℃以上とした請求項１に記載の炊飯器。2. The temperature inside the rice cooker (1) when heating the rice is restarted
The rice cooker according to claim 1, which has a temperature of 100 ° C or higher.
ようにした請求項２に記載の炊飯器。3. The rice cooker according to claim 2, wherein the set time (T) is inversely proportional to the amount of cooked rice.
によって加熱する形式のガス炊飯器とし、制御装置(C1)
によって前記ガスバーナ(10)へのガス回路に挿入した開
閉弁(21)を開閉制御すると共に、ガスバーナ(10)への点
火装置を制御する構成とした請求項１乃至請求項３の何
れかに記載の炊飯器。4. A rice cooker, a rice cooker (1), and a gas burner (10)
Gas cooker of the type to be heated by the controller (C 1 )
The opening / closing valve (21) inserted in the gas circuit to the gas burner (10) is controlled to be opened and closed by the above, and the ignition device to the gas burner (10) is also controlled. Rice cooker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4214375A JP2537116B2 (en) | 1992-08-11 | 1992-08-11 | rice cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4214375A JP2537116B2 (en) | 1992-08-11 | 1992-08-11 | rice cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0654750A JPH0654750A (en) | 1994-03-01 |
| JP2537116B2 true JP2537116B2 (en) | 1996-09-25 |
Family
ID=16654750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4214375A Expired - Fee Related JP2537116B2 (en) | 1992-08-11 | 1992-08-11 | rice cooker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2537116B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4947694B2 (en) * | 2006-08-09 | 2012-06-06 | 株式会社パロマ | rice cooker |
-
1992
- 1992-08-11 JP JP4214375A patent/JP2537116B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0654750A (en) | 1994-03-01 |
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