JP5034748B2 - rice cooker - Google Patents
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- JP5034748B2 JP5034748B2 JP2007198366A JP2007198366A JP5034748B2 JP 5034748 B2 JP5034748 B2 JP 5034748B2 JP 2007198366 A JP2007198366 A JP 2007198366A JP 2007198366 A JP2007198366 A JP 2007198366A JP 5034748 B2 JP5034748 B2 JP 5034748B2
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Description
本発明は、保温機能を有する炊飯器に関するものである。 The present invention relates to a rice cooker having a heat retaining function.
従来、使用者の操作により、保温時に保温米飯を保温温度より高い温度に上昇させる再加熱手段を有する炊飯器がある。また、所定の保温温度に維持する定温保温機能と、鍋内温度を保温経過時間により2水準以上の保温温度に変化させる変温保温機能を選択設定できる機能を有する炊飯器もある。これらの機能を併せ持つ炊飯器では、再加熱操作時の保温機能状態を記憶させ、再加熱後には、再加熱開始前の保温機能状態に設定するものがある(例えば、特許文献1参照)。 2. Description of the Related Art Conventionally, there is a rice cooker having reheating means for raising the temperature of the heated rice to a temperature higher than the temperature during the heat retention by the user's operation. There is also a rice cooker having a function capable of selectively setting a constant temperature keeping function for maintaining a predetermined heat keeping temperature and a variable temperature keeping function for changing the temperature in the pot to a heat keeping temperature of two levels or more depending on the heat keeping elapsed time. Some rice cookers having both functions store the heat-retaining function state during the reheating operation, and after reheating, set the heat-retaining function state before the start of reheating (see, for example, Patent Document 1).
このような従来の炊飯器は、再加熱操作により保温機能状態が変化することがなく、使用者は保温機能の再設定を行わなくてよく、便利である。
しかしながら、上記特許文献1に開示された従来の炊飯器では、再加熱動作後に保温機能の再設定を行わなくてよいものの、再加熱終了から時間が経過してしまった場合、折角再加熱した保温米飯の温度が元の維持温度に向けて下がってしまい、使用者の求める熱さの保温米飯を食せないことがあった。また、再加熱開始前の工程における保温維持温度が一定ではないため、再加熱終了後元工程に戻ってからの経過時間によって、再加熱米飯の温度が変化してしまうという問題があった。 However, in the conventional rice cooker disclosed in the above-mentioned Patent Document 1, although it is not necessary to reset the heat retaining function after the reheating operation, if time has elapsed since the end of the reheating, the reheated heat retaining In some cases, the temperature of the cooked rice drops toward the original maintenance temperature, and the cooked cooked rice with the heat required by the user cannot be eaten. Moreover, since the heat retention maintenance temperature in the process before the start of reheating is not constant, there is a problem that the temperature of the reheated cooked rice changes depending on the elapsed time after returning to the original process after the end of reheating.
本発明は上記従来の課題を解決するもので、再加熱操作を行った後、使用者が蓋を開けたときには、常に熱い状態の再加熱米飯を食することができる炊飯器を提供することを目的としている。 The present invention solves the above-mentioned conventional problems, and provides a rice cooker that can always eat hot reheated rice when the user opens the lid after performing the reheating operation. It is aimed.
本発明は上記目的を達成するために、上面が開口した炊飯器本体に鍋を着脱自在に収納し、この鍋を鍋加熱手段により加熱し、炊飯器本体の上面開口部を蓋により開閉自在に覆い、鍋の温度を鍋温度検出手段により検出するとともに鍋に面して前記蓋に設けた内蓋の温度を蓋温度検出手段により検出し、制御手段により鍋加熱手段を制御するよう構成し、制御手段は、鍋の温度を所定の保温温度に維持する保温機能と、鍋の温度を所定の保温温度よりも高い温度に上昇させる再加熱機能とを有し、前記保温機能動作中に再加熱操作により動作する再加熱機能の終了後は、所定の保温温度よりも高くかつ再加熱機能動作の終了時の温度よりも低い温度にて維持する高温保温へと移行し、蓋温度検出手段により内蓋の温度が所定温度T1以下になったのを検出し、さらに所定温度T1より高温の所定温度T2以上になったのを検出した後、再加熱前の保温状態へ移行するよう構成したものである。 In order to achieve the above object, the present invention detachably stores a pan in a rice cooker body having an open top surface, heats the pan with pan heating means, and opens and closes the top opening of the rice cooker body with a lid. Covering, detecting the temperature of the pan by the pan temperature detection means and detecting the temperature of the inner lid provided on the lid facing the pan by the lid temperature detection means, and controlling the pan heating means by the control means, The control means has a heat retaining function for maintaining the temperature of the pan at a predetermined heat retaining temperature, and a reheating function for raising the temperature of the pan to a temperature higher than the predetermined heat retaining temperature , and the reheating is performed during the operation of the heat retaining function. after completion of the re-heating function operated by operation than the predetermined retained temperature than the temperature at the end of operation coincide with high reheating functions shifted to the high temperature thermal insulation to maintain at a low have a temperature, the lid temperature detecting means As a result, the temperature of the inner lid is not more than the predetermined temperature T1. It was to detect the one in which further after detecting that the temperature becomes high more than a predetermined temperature T2 than the predetermined temperature T1, is configured to transition to reheat before insulation state.
これにより、再加熱操作を行った後、蓋が開けられ内蓋の温度が低下するまで高温で保温されるので、使用者が蓋を開けたときには、常に熱い状態の保温米飯を食することができる。 Thus, after performing the reheating operation, the lid is opened and kept warm at a high temperature until the temperature of the inner lid decreases, so that when the user opens the lid, the hot cooked rice can always be eaten. it can.
本発明の炊飯器は、再加熱操作を行った後、蓋が開けられ内蓋の温度が低下するまで高温で保温されるので、蓋を開けたときには、常に熱い状態の保温米飯を食することができる。 After the reheating operation, the rice cooker of the present invention is kept warm at a high temperature until the lid is opened and the temperature of the inner lid is lowered. Therefore, when the lid is opened, the cooked cooked rice is always hot. Can do.
第1の発明は、上面が開口した炊飯器本体と、前記炊飯器本体に着脱自在に収納される鍋と、前記鍋を加熱する鍋加熱手段と、前記炊飯器本体の上面開口部を開閉自在に覆う蓋と、前記鍋の温度を検出する鍋温度検出手段と、前記鍋に面して前記蓋に設けた内蓋の温度を検出する蓋温度検出手段と、前記鍋加熱手段を制御する制御手段とを備え、前記制御手段は、前記鍋の温度を所定の保温温度に維持する保温機能と、前記鍋の温度を前記所定の保温温度よりも高い温度に上昇させる再加熱機能とを有し、前記保温機能動作中に再加熱操作により動作する再加熱機能の終了後は、前記所定の保温温度よりも高くかつ再加熱機能動作の終了時の温度よりも低い温度にて維持する高温保温へと移行し、前記蓋温度検出手段により前記内蓋の温度が所定温度T1以下になったのを検出し、さらに所定温度T1より高温の所定温度T2以上になったのを検出した後、一定時間後に再加熱前の保温状態へ移行するよう構成したものであり、再加熱操作を行った後、蓋が開けられ内蓋の温度が低下し、蓋が閉められるまで高温で保温されるので、使用者が蓋を開けたときには、常に熱い状態の保温米飯を食することができる。 1st invention is a rice cooker main body with which the upper surface opened, the pan accommodated in the said rice cooker main body, the pan heating means which heats the said pan, and the upper surface opening part of the said rice cooker main body can be opened and closed freely A lid temperature detecting means for detecting the temperature of the pot, a lid temperature detecting means for detecting the temperature of the inner lid provided on the lid facing the pot, and a control for controlling the pot heating means And the control means has a heat retaining function for maintaining the temperature of the pan at a predetermined heat retaining temperature, and a reheating function for raising the temperature of the pan to a temperature higher than the predetermined heat retaining temperature. the heat retaining function in operation after the end of the reheating function that operates by reheating operation, high temperatures maintained at the predetermined retained temperature lower have temperature than the temperature at the end of also operating coincide with high reheating function from The temperature of the inner lid is controlled by the lid temperature detecting means. It detects that equal to or less than the fixed temperature T1, and and further after detecting that the temperature becomes high more than a predetermined temperature T2 than the predetermined temperature T1, is configured to transition to insulation state before reheating after a predetermined time After the reheating operation, the lid is opened, the temperature of the inner lid drops, and the temperature is kept high until the lid is closed. can do.
第2の発明は、上面が開口した炊飯器本体と、前記炊飯器本体に着脱自在に収納される鍋と、前記鍋を加熱する鍋加熱手段と、前記炊飯器本体の上面開口部を開閉自在に覆う蓋と、前記鍋の温度を検出する鍋温度検出手段と、前記鍋加熱手段を制御する制御手段とを備え、前記制御手段は、前記鍋の温度を所定の保温温度に維持する保温機能と、前記保温機能動作状態で前記鍋の温度を前記所定の保温温度よりも高い温度に上昇させる再加熱機能とを有し、前記保温機能動作中に再加熱操作により動作する再加熱機能の終了後は、前記所定の保温温度よりも高くかつ再加熱機能動作の終了時の温度よりも低い温度にて維持する高温保温へと移行し、前記鍋温度検出手段により前記鍋の温度が所定温度T3以下になったのを検出し、さらに所定温度T3より高温の所定温度T4以上になったのを検出した後、一定時間後に再加熱前の保温状態へ移行するよう構成したものであり、再加熱操作を行った後、蓋が開けられ鍋の温度が低下し、蓋が閉められるまで高温で保温されるので、使用者が蓋を開けたときには、常に熱い状態の保温米飯を食することができる。 2nd invention can open and close the upper surface opening part of the rice cooker main body with which the upper surface opened, the pan detachably accommodated in the said rice cooker main body, the pan heating means which heats the said pan, and the said rice cooker main body A lid temperature detecting means for detecting the temperature of the pot, and a control means for controlling the pot heating means, wherein the control means maintains the temperature of the pot at a predetermined temperature. And a reheating function that raises the temperature of the pan to a temperature higher than the predetermined heat retaining temperature in the heat retaining function operating state, and the end of the reheating function that operates by a reheating operation during the heat retaining function operation after than said predetermined retained temperature shifted to the high temperature thermal insulation to maintain even at low have a temperature above the temperature at the end of operation coincide with high reheating function, by the pan temperature detecting means temperature of the pot predetermined It is detected that the temperature is T3 or less, and further predetermined After detecting from time T3 it became to temperatures higher than the predetermined temperature T4, are those configured to transition to insulation state before reheating after a predetermined time, after the reheating operation, the lid is opened pot The temperature is kept high until the lid is closed, so that when the user opens the lid, the hot cooked rice can always be eaten.
以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
(実施の形態1)
図1は本発明の実施の形態1における炊飯器の断面図を示し、図2は同炊飯器の操作部の拡大正面図を示すものである。なお、図面を簡潔にするために、電気的接続のためのリード線等は省略している。
(Embodiment 1)
FIG. 1 shows a cross-sectional view of the rice cooker in Embodiment 1 of the present invention, and FIG. 2 shows an enlarged front view of the operation unit of the rice cooker. In order to simplify the drawing, lead wires and the like for electrical connection are omitted.
図1に示すように、炊飯器本体10は、上面が開口する略円筒形に形成し、内部に鍋11を着脱自在に収納するため有底筒状の鍋収納部10aを有している。鍋収納部10aの底部には、鍋加熱手段として鍋11を誘導加熱する鍋加熱コイル12を設けている。底温度センサー13は、鍋11の温度を検出する鍋温度検出手段を構成するもので、鍋11の底面と当接するよう付勢して装着し、炊飯および保温時の鍋11の温度を検出している。 As shown in FIG. 1, the rice cooker main body 10 is formed in a substantially cylindrical shape having an open top surface, and has a bottomed cylindrical pot storage portion 10 a for detachably storing the pot 11 therein. A pan heating coil 12 for inductively heating the pan 11 is provided as a pan heating means at the bottom of the pan storage portion 10a. The bottom temperature sensor 13 constitutes a pan temperature detecting means for detecting the temperature of the pan 11, and is urged and attached so as to come into contact with the bottom surface of the pan 11, and detects the temperature of the pan 11 during cooking and warming. ing.
炊飯器本体10の上面開口部10bは、炊飯器本体10にヒンジ軸15により開閉自在に支持された蓋14で覆われている。蓋14に設けた蒸気口16は、炊飯中の蒸気を排出するものである。蓋14の下面には、鍋11に面した内蓋を構成する放熱板17を設け、この放熱板17上に蓋加熱手段である蓋ヒータ18を設け、放熱板17を加熱するようにしている。また、蓋温度センサー19は、放熱板17の温度を検出する蓋温度検出手段を構成するもので、放熱板17に当接するように設けている。鍋パッキン20は、蓋14を閉じたときに、鍋11の上辺に当接し鍋11を密閉する。 The upper surface opening 10b of the rice cooker body 10 is covered with a lid 14 that is supported on the rice cooker body 10 by a hinge shaft 15 so as to be opened and closed. The steam port 16 provided in the lid 14 is for discharging steam during cooking. A heat radiating plate 17 constituting an inner lid facing the pan 11 is provided on the lower surface of the lid 14, and a lid heater 18 as a lid heating means is provided on the heat radiating plate 17 so as to heat the heat radiating plate 17. . The lid temperature sensor 19 constitutes lid temperature detection means for detecting the temperature of the heat radiating plate 17, and is provided so as to contact the heat radiating plate 17. When the lid 14 is closed, the pot packing 20 comes into contact with the upper side of the pot 11 and seals the pot 11.
制御基板(制御手段)21は、マイクロコンピュータなどで構成し、加熱コイル12および蓋ヒータ18への電力供給を制御するとともに、底温度センサー13、蓋温度センサー19の信号を読み込み、かつ計時手段(図示せず)を有している。入力スイッチ22は、使用者が操作時に用いるものである。制御基板21上には、炊飯器の状態を表示する表示手段であるLCD23や、操作時の入力受付報知や炊飯動作終了報知、再加熱動作終了報知のためのブザー(図示せず)を設けている。 The control board (control means) 21 is constituted by a microcomputer or the like, controls power supply to the heating coil 12 and the lid heater 18, reads signals from the bottom temperature sensor 13 and the lid temperature sensor 19, and measures time ( (Not shown). The input switch 22 is used by the user during operation. On the control board 21, there are provided an LCD 23 which is a display means for displaying the state of the rice cooker, and a buzzer (not shown) for notifying the input reception during operation, the rice cooking operation end notification, and the reheating operation end notification. Yes.
ここで、制御基板(制御手段)21は、鍋11の温度を所定の保温温度(例えば、74℃)に維持する保温機能と、鍋11の温度を所定の保温温度(74℃)よりも高い温度(例えば、90℃)に上昇させる再加熱機能とを有し、再加熱操作後は、所定の保温温度(74℃)よりも高い温度(例えば、85℃)にて維持する高温保温へと移行し、蓋温度センサー19により放熱板17の温度が所定温度T1(例えば、77℃)以下になったのを検出し、さらに所定温度T1より高温の所定温度T2(例えば、81℃)以上になったのを検出した後、再加熱前の保温状態へ移行するよう構成している。 Here, the control board (control means) 21 has a heat retention function for maintaining the temperature of the pan 11 at a predetermined heat retention temperature (for example, 74 ° C.) and the temperature of the pan 11 higher than the predetermined heat retention temperature (74 ° C.). A reheating function for raising the temperature to 90 ° C (for example, 90 ° C), and after the reheating operation, to a high temperature heat insulation maintained at a temperature (for example, 85 ° C) higher than a predetermined heat retaining temperature (74 ° C). The lid temperature sensor 19 detects that the temperature of the heat radiating plate 17 has become equal to or lower than a predetermined temperature T1 (for example, 77 ° C.), and further exceeds a predetermined temperature T 2 (for example, 81 ° C.) higher than the predetermined temperature T1. After having detected that it became, it has comprised so that it may transfer to the heat retention state before reheating.
つぎに、図2に示すように、透明部を有する操作パネル25の内部に、表示手段であるLCD23を設け、炊飯・保温状態や予約設定時間、現在時刻などを表示する。炊飯ボタン27、保温ボタン28、コースボタン29などの背部には、それぞれ入力スイッチ22を配置しており、それぞれのボタンを押すことにより保温を開始したり、炊飯コース・保温コースを選択したりすることが可能となっている。本実施の形態では、保温ボタン28は、再加熱動作を開始させる再加熱スイッチも兼ねている。 Next, as shown in FIG. 2, an LCD 23 serving as a display means is provided inside the operation panel 25 having a transparent portion, and displays the rice cooking / warming state, the reservation setting time, the current time, and the like. Input switches 22 are arranged on the backs of the rice cooking button 27, the heat retaining button 28, the course button 29, etc., respectively, and by pressing each button, the heat retaining is started or the rice cooking course / the heat retaining course is selected. It is possible. In the present embodiment, the heat retention button 28 also serves as a reheating switch for starting a reheating operation.
上記構成において図3を参照しながら炊飯・保温および再加熱時の動作を説明する。図3は、本実施の形態における炊飯器にて保温を行っているときに時間t1のタイミングで保温ボタン28を操作したときの鍋11の温度(底温度センサー13の検出温度)と放熱板17の温度(蓋温度センサー19の検出温度)の変化を示すものである。 The operation at the time of rice cooking, heat insulation, and reheating will be described with reference to FIG. 3 in the above configuration. FIG. 3 shows the temperature of the pan 11 (the detected temperature of the bottom temperature sensor 13) and the heat radiating plate 17 when the heat retention button 28 is operated at the timing of time t1 when the rice cooker in the present embodiment is performing heat insulation. This shows a change in temperature (detected temperature of the lid temperature sensor 19).
図3において、30は底温度センサー13にて検出している鍋11の温度、31は蓋温度センサー19にて検出している放熱板17の温度であるが、ほぼ同じ温度であり、重なっている部分がある。t1、t2、t3、t4、t5、t6は経過時間を示している。 In FIG. 3, 30 is the temperature of the pan 11 detected by the bottom temperature sensor 13, and 31 is the temperature of the heat sink 17 detected by the lid temperature sensor 19. There is a part. t1, t2, t3, t4, t5, and t6 indicate elapsed times.
使用者は、所定の量の米と水を鍋11内に準備し、炊飯器本体10にセットして蓋14を閉め、電源を入れる。 The user prepares a predetermined amount of rice and water in the pan 11, sets it in the rice cooker body 10, closes the lid 14, and turns on the power.
使用者が炊飯ボタン27を押すと操作受付を報知するブザーが鳴り、炊飯工程を開始して、所定のプログラムにしたがって加熱コイル12や蓋ヒータ18による加熱を行う。炊飯が終了すると炊飯終了を報知するためのブザーが鳴り、所定の保温温度、例えば、74℃での保温工程に移行する。保温においては、所定のプログラムにしたがって加熱コイル12や蓋ヒータ18による加熱を行い、保温開始からある程度時間が経過すると、鍋11の温度30が所定の保温温度(例えば、74℃)で安定し、蓋14が閉められているので同時に放熱板17の温度31も一定温度(例えば、74℃)に安定する。 When the user presses the rice cooking button 27, a buzzer for notifying operation acceptance sounds, the rice cooking process is started, and the heating coil 12 and the lid heater 18 are heated according to a predetermined program. When cooking is completed, a buzzer for notifying the end of cooking is sounded, and the process proceeds to a heat retaining process at a predetermined heat retaining temperature, for example, 74 ° C. In the heat insulation, heating by the heating coil 12 and the lid heater 18 is performed according to a predetermined program, and when a certain amount of time has elapsed from the start of the heat insulation, the temperature 30 of the pan 11 is stabilized at a predetermined heat insulation temperature (for example, 74 ° C.), Since the lid 14 is closed, the temperature 31 of the heat radiating plate 17 is also stabilized at a constant temperature (for example, 74 ° C.) at the same time.
保温時の時間t1において、使用者が保温ボタン28を押して再加熱操作すると、操作受付を報知するブザーが鳴り、再加熱動作が開始され、所定のプログラムにしたがって加熱コイル12や蓋ヒータ18による加熱を行う。鍋11の温度30が90℃に到達するとブザーが鳴り、再加熱動作が終了する(時間t2)。再加熱動作終了後は、再加熱前の保温温度である74℃よりも高い温度である85℃にて維持する高温保温へと移行する。使用者はブザー音により再加熱動作の終了を知り、再加熱米飯を食するために蓋14を開放する(時間t3)。蓋14が開放されると、放熱板17は外気に触れることにより、放熱
板17の温度31が低下する。その後、蓋14が閉められると、放熱板17は外気に触れることがなくなり、放熱板17の温度31が上昇する。
When the user presses the heat retention button 28 and performs a reheating operation at the time t1 when the heat is retained, a buzzer for notifying operation reception sounds and a reheating operation is started, and heating by the heating coil 12 and the lid heater 18 is performed according to a predetermined program. I do. When the temperature 30 of the pan 11 reaches 90 ° C., a buzzer sounds and the reheating operation ends (time t2). After completion of the reheating operation, the temperature shifts to a high temperature heat retention maintained at 85 ° C., which is higher than the heat retention temperature of 74 ° C. before reheating. The user knows the end of the reheating operation by the buzzer sound and opens the lid 14 to eat the reheated cooked rice (time t3). When the lid 14 is opened, the heat sink 17 is exposed to the outside air, so that the temperature 31 of the heat sink 17 is lowered. Thereafter, when the lid 14 is closed, the heat radiating plate 17 is not exposed to the outside air, and the temperature 31 of the heat radiating plate 17 rises.
すなわち、放熱板17の温度31が所定温度T1(77℃)以下になったのを検出し(時間t4)、その後蓋14が閉められた(時間t5)後、所定温度T1よりも高温の所定温度T2(81℃)以上になったのを検出する(時間t6)と、再加熱前の保温状態である74℃にて維持する保温へ移行する。 That is, it is detected that the temperature 31 of the heat radiating plate 17 has become equal to or lower than the predetermined temperature T1 (77 ° C.) (time t4), and then the lid 14 is closed (time t5), and then the predetermined temperature higher than the predetermined temperature T1. When the temperature T2 (81 ° C.) or higher is detected (time t6), the temperature is maintained at 74 ° C., which is the temperature maintaining state before reheating.
放熱板17の温度31が所定温度T1以下になったのを検出しない場合は、85℃での高温保温を維持するプログラムとなっている。よって、使用者は、再加熱終了後の時間によらず、再加熱前の保温温度に対して常に熱い状態の保温米飯を食することができる。 In the case where it is not detected that the temperature 31 of the heat radiating plate 17 has become equal to or lower than the predetermined temperature T1, the program is a program for maintaining a high temperature insulation at 85 ° C. Thus, the user can eat the cooked cooked rice that is always hot with respect to the warmed temperature before reheating regardless of the time after the completion of reheating.
以上のように、本実施の形態によれば、再加熱操作後は、所定の保温温度(74℃)よりも高い温度(85℃)にて維持する高温保温へと移行し、蓋温度センサー19により放熱板17の温度が所定温度T1(77℃)以下になったのを検出し、さらに所定温度T1より高温の所定温度T2(81℃)以上になったのを検出した後、再加熱前の保温状態へ移行するよう構成したので、再加熱操作を行った後、蓋14が開けられ放熱板17の温度が低下し、蓋14が閉められるまで高温で保温されるので、使用者は、再加熱終了後の時間によらず、再加熱前の保温温度に対して常に熱い状態の保温米飯を食することができ、非常に便利である。 As described above, according to the present embodiment, after the reheating operation, the temperature shifts to the high temperature heat retention maintained at a temperature (85 ° C.) higher than the predetermined heat retention temperature (74 ° C.), and the lid temperature sensor 19. To detect that the temperature of the heat radiating plate 17 has become equal to or lower than the predetermined temperature T1 (77 ° C.), and after detecting that the temperature has become higher than the predetermined temperature T2 (81 ° C.) higher than the predetermined temperature T1, before reheating. After the reheating operation is performed, the lid 14 is opened, the temperature of the heat radiating plate 17 is lowered, and the temperature is kept high until the lid 14 is closed. Regardless of the time after the end of reheating, it is possible to eat the warm cooked rice that is always hot relative to the warm temperature before reheating, which is very convenient.
なお、本実施の形態では、放熱板17の温度31が所定温度T1以下(例えば77℃)になったのを検出し(時間t4)、その後蓋14が閉められた(時間t5)後、所定温度T1よりも高温の所定温度T2以上(例えば、81℃)になったのを検出する(時間t6)と、すぐに再加熱前の保温状態である74℃にて維持する保温へ移行するようにしているが、放熱板17の温度31が所定温度T1よりも高温の所定温度T2以上(例えば、81℃)になったのを検出する(時間t6)と、一定時間経過後に再加熱前の保温状態である74℃にて維持する保温へ移行してもよく、同様な効果が得られる。 In the present embodiment, it is detected that the temperature 31 of the heat radiating plate 17 is equal to or lower than a predetermined temperature T1 (for example, 77 ° C.) (time t4), and then the lid 14 is closed (time t5), When it is detected (time t6) that the temperature is higher than a predetermined temperature T2 higher than the temperature T1 (for example, 81 ° C.) (time t6), it immediately shifts to the heat retention maintained at 74 ° C., which is the heat insulation state before reheating. However, when it is detected that the temperature 31 of the heat radiating plate 17 is higher than or equal to a predetermined temperature T2 (for example, 81 ° C.) higher than the predetermined temperature T1 (time t6), after the elapse of a certain time, before the reheating. You may transfer to the heat retention maintained at 74 degreeC which is a heat retention state, and the same effect is acquired.
さらに、本実施の形態では、放熱板17の温度31が所定温度T1以下(例えば77℃)になったのを検出し(時間t4)、その後蓋14が閉められた(時間t5)後、所定温度T1よりも高温の所定温度T2以上(例えば、81℃)になったのを検出する(時間t6)と、すぐにもしくは一定時間経過後に再加熱前の保温状態である74℃にて維持する保温へ移行するようにしているが、蓋14が閉められる(時間t5)前に、放熱板17の温度31が所定温度T1よりも高温の所定温度T2以上(例えば、81℃)になったのを検出しても、すぐにもしくは一定時間経過後に再加熱前の保温状態である74℃にて維持する保温へ移行するようにしてもよく、同様な効果が得られる。 Furthermore, in the present embodiment, it is detected that the temperature 31 of the heat radiating plate 17 is equal to or lower than a predetermined temperature T1 (for example, 77 ° C.) (time t4), and then the lid 14 is closed (time t5), When it is detected that the temperature is higher than a predetermined temperature T2 (for example, 81 ° C.) higher than the temperature T1 (eg, time t6), the temperature is maintained at 74 ° C., which is a heat insulation state before reheating immediately or after a certain time has elapsed. However, before the lid 14 is closed (time t5), the temperature 31 of the heat radiating plate 17 has become higher than the predetermined temperature T2 higher than the predetermined temperature T1 (for example, 81 ° C.). Even if it detects, it may be made to shift to the heat retention maintained at 74 ° C. which is the heat retention state before reheating immediately or after a certain time has elapsed, and the same effect is obtained.
(実施の形態2)
図1に示す制御基板(制御手段)21は、鍋11の温度を所定の保温温度(例えば、74℃)に維持する保温機能と、鍋11の温度を所定の保温温度よりも高い温度(例えば、90℃)に上昇させる再加熱機能とを有し、再加熱操作後は、所定の保温温度よりも高い温度(例えば、85℃)にて維持する高温保温へと移行し、底温度センサー13により鍋11の温度が所定温度T3(例えば、82℃)以下になったのを検出し、さらに所定温度T3よりも高温の所定温度T4(例えば、85℃)以上になったのを検出した後、再加熱前の保温状態移行するよう構成している。他の構成は上記実施の形態1と同じである。
(Embodiment 2)
A control board (control means) 21 shown in FIG. 1 has a heat retention function for maintaining the temperature of the pan 11 at a predetermined heat retention temperature (for example, 74 ° C.), and a temperature (for example, a temperature higher than the predetermined heat retention temperature). , 90 ° C.), and after the reheating operation, the temperature shifts to a high temperature insulation maintained at a temperature higher than a predetermined insulation temperature (for example, 85 ° C.). After detecting that the temperature of the pan 11 has become equal to or lower than a predetermined temperature T3 (for example, 82 ° C.), and further detects that the temperature has become higher than the predetermined temperature T4 (for example, 85 ° C.) higher than the predetermined temperature T3. The heat insulation state before reheating is shifted. Other configurations are the same as those of the first embodiment.
上記構成において図4を参照しながら炊飯・保温および再加熱時の動作を説明する。図4は、本実施の形態における炊飯器にて保温を行っているときに時間t1のタイミングで保温ボタン28を操作した時の鍋11の温度(底温度センサー13の検出温度)の変化を
示すものである。
The operation | movement at the time of rice cooking and heat insulation and reheating is demonstrated referring FIG. 4 in the said structure. FIG. 4 shows a change in the temperature of the pan 11 (detected temperature of the bottom temperature sensor 13) when the heat retaining button 28 is operated at the timing of time t1 when the rice cooker in the present embodiment is performing heat retaining. Is.
図4において、30は底温度センサー13にて検出している鍋11の温度、t1、t2、t3、t7、t8、t9は経過時間を示している。 In FIG. 4, 30 is the temperature of the pan 11 detected by the bottom temperature sensor 13, and t1, t2, t3, t7, t8, and t9 indicate the elapsed time.
使用者が炊飯ボタン27を押すと操作受付を報知するブザーが鳴り、炊飯工程を開始して、所定のプログラムにしたがって加熱コイル12や蓋ヒータ18による加熱を行う。炊飯が終了すると炊飯終了を報知するためのブザーが鳴り、所定の保温温度、例えば、74℃での保温工程に移行する。保温においては、所定のプログラムにしたがって加熱コイル12や蓋ヒータ18による加熱を行い、保温開始からある程度時間が経過すると、鍋11の温度30が所定の保温温度(例えば、74℃)で安定する。 When the user presses the rice cooking button 27, a buzzer for notifying operation acceptance sounds, the rice cooking process is started, and the heating coil 12 and the lid heater 18 are heated according to a predetermined program. When cooking is completed, a buzzer for notifying the end of cooking is sounded, and the process proceeds to a heat retaining process at a predetermined heat retaining temperature, for example, 74 ° C. In the heat retention, the heating coil 12 and the lid heater 18 are heated according to a predetermined program, and when a certain amount of time has elapsed from the start of the heat retention, the temperature 30 of the pan 11 is stabilized at a predetermined heat retention temperature (for example, 74 ° C.).
保温時の時間t1において、使用者が保温ボタン28を押して、再加熱操作すると、操作受付を報知するブザーが鳴り、再加熱動作が開始され、所定のプログラムにしたがって加熱コイル12や蓋ヒータ18による加熱を行う。鍋11の温度30が90℃に到達するとブザーが鳴り、再加熱動作が終了する(時間t2)。再加熱動作終了後は、再加熱前の保温温度である74℃よりも高い温度である85℃にて維持する高温保温へと移行する。使用者はブザー音により再加熱動作の終了を知り、再加熱米飯を食するために蓋14を開放する(時間t3)。蓋14が開放されると、鍋11内の米飯や鍋11の上部が外気に触れることにより、鍋11の温度30が低下する。その後、蓋14が閉められると、鍋11内の米飯や鍋11の上部は外気に触れることがなくなり、鍋11の温度30が上昇する。 When the user presses the heat retention button 28 and performs a reheating operation at the time t1 during the heat retention, a buzzer for notifying operation acceptance sounds and a reheating operation is started. Heat. When the temperature 30 of the pan 11 reaches 90 ° C., a buzzer sounds and the reheating operation ends (time t2). After completion of the reheating operation, the temperature shifts to a high temperature heat retention maintained at 85 ° C., which is higher than the heat retention temperature of 74 ° C. before reheating. The user knows the end of the reheating operation by the buzzer sound and opens the lid 14 to eat the reheated cooked rice (time t3). When the lid 14 is opened, the cooked rice in the pan 11 or the upper part of the pan 11 touches the outside air, so that the temperature 30 of the pan 11 decreases. Thereafter, when the lid 14 is closed, the cooked rice in the pan 11 and the upper portion of the pan 11 are not exposed to the outside air, and the temperature 30 of the pan 11 rises.
すなわち、鍋11の温度30が所定温度T3(例えば、82℃)以下になったのを検出し(時間t7)、その後蓋14が閉められた(時間t8)後、所定温度T3よりも高温の所定温度T4(例えば、85℃)以上になったのを検出する(時間t9)と、再加熱前の保温状態である74℃にて維持する保温へ移行する。 That is, it is detected that the temperature 30 of the pan 11 has become equal to or lower than a predetermined temperature T3 (for example, 82 ° C.) (time t7), and then the lid 14 is closed (time t8), and then the temperature is higher than the predetermined temperature T3. When it is detected that the temperature has become equal to or higher than a predetermined temperature T4 (for example, 85 ° C.) (time t9), the temperature is maintained at 74 ° C., which is the temperature maintaining state before reheating.
鍋11の温度30が所定温度T3以下になったのを検出しない場合は、85℃での高温保温を維持するプログラムとなっている。よって、使用者は、再加熱終了後の時間によらず、再加熱前の保温温度に対して常に熱い状態の保温米飯を食することができる。 In the case where it is not detected that the temperature 30 of the pan 11 has become equal to or lower than the predetermined temperature T3, the program is a program for maintaining a high temperature insulation at 85 ° C. Thus, the user can eat the cooked cooked rice that is always hot with respect to the warmed temperature before reheating regardless of the time after the completion of reheating.
以上のように、本実施の形態によれば、再加熱操作後は、所定の保温温度(74℃)よりも高い温度(85℃)にて維持する高温保温へと移行し、底温度センサー13により鍋11の温度が所定温度T3(82℃)以下になったのを検出し、さらに所定温度T3よりも高温の所定温度T4(85℃)以上になったのを検出した後、再加熱前の保温状態移行するよう構成しているので、再加熱操作を行った後、蓋14が開けられ放熱板17の温度が低下し、蓋14が閉められるまで高温で保温されるので、使用者は、再加熱終了後の時間によらず、再加熱前の保温温度に対して常に熱い状態の保温米飯を食することができ、非常に便利である。 As described above, according to the present embodiment, after the reheating operation, the bottom temperature sensor 13 shifts to the high temperature heat retention maintained at a temperature (85 ° C.) higher than the predetermined heat retention temperature (74 ° C.). To detect that the temperature of the pan 11 has become equal to or lower than the predetermined temperature T3 (82 ° C.), and after detecting that the temperature has become higher than the predetermined temperature T4 (85 ° C.) higher than the predetermined temperature T3, before reheating. After the reheating operation is performed, the lid 14 is opened, the temperature of the heat sink 17 is lowered, and the temperature is kept high until the lid 14 is closed. Regardless of the time after the completion of the reheating, it is possible to eat the hot cooked rice that is always hot with respect to the warmed temperature before the reheating, which is very convenient.
なお、本実施の形態では、鍋11の温度30が所定温度T3(82℃)以下になったのを検出し(時間7)、その後蓋14が閉められた(時間t8)後、所定温度T3よりも高温の所定温度T4(85℃)以上になったのを検出する(時間t9)と、すぐに再加熱前の保温状態である74℃にて維持する保温へ移行するようにしているが、鍋11の温度30が所定温度T3よりも高温の所定温度T4以上(例えば、85℃)になったのを検出する(時間t9)、一定時間経過後に再加熱前の保温状態である74℃にて維持する保温へ移行してもよく、同様な効果が得られる。 In the present embodiment, it is detected that the temperature 30 of the pan 11 has become equal to or lower than the predetermined temperature T3 (82 ° C.) (time 7), and then the lid 14 is closed (time t8), and then the predetermined temperature T3. When it is detected that the temperature is higher than the predetermined temperature T4 (85 ° C.) higher than (time t9), it immediately shifts to the heat retention maintained at 74 ° C., which is the heat retention state before reheating. Detecting that the temperature 30 of the pan 11 is equal to or higher than a predetermined temperature T4 higher than the predetermined temperature T3 (for example, 85 ° C.) (time t9). The same effect may be obtained by shifting to the heat retention maintained at.
さらに、本実施の形態では、鍋11の温度30が所定温度T3(82℃)以下になったのを検出し(時間7)、その後蓋14が閉められた(時間t8)後、所定温度T3よりも
高温の所定温度T4(85℃)以上になったのを検出する(時間t9)と、すぐにもしくは一定時間経過後に再加熱前の保温状態である74℃にて維持する保温へ移行するようにしているが、蓋14が閉められる(時間t8)前に、鍋11の温度30が所定温度T3よりも高温の所定温度T4(85℃)以上になったのを検出しても、すぐにもしくは一定時間経過後に再加熱前の保温状態である74℃にて維持する保温へ移行するようにしてもよく、同様な効果が得られる。
Furthermore, in the present embodiment, it is detected that the temperature 30 of the pan 11 has become equal to or lower than the predetermined temperature T3 (82 ° C.) (time 7), and then the lid 14 is closed (time t8), and then the predetermined temperature T3. When it is detected that the temperature is higher than the predetermined temperature T4 (85 ° C.) higher than (time t9), the temperature shifts immediately or after a certain time has elapsed to the temperature maintaining at 74 ° C., which is the temperature maintaining state before reheating. However, immediately before the lid 14 is closed (time t8), even if it is detected that the temperature 30 of the pan 11 is higher than the predetermined temperature T4 (85 ° C.) higher than the predetermined temperature T3, Alternatively, after the elapse of a certain time, the temperature may be maintained at 74 ° C., which is the temperature maintaining state before reheating, and the same effect can be obtained.
(実施の形態3)
図1に示す制御基板(制御手段)21は、鍋11の温度を所定の保温温度(例えば、74℃)で維持する定温保温機能と、鍋11の温度を保温経過時間に応じて2水準以上の保温温度(例えば、74℃と60℃)で維持する変温保温機能の2つの保温機能を有し、再加熱操作後は、再加熱前の保温機能状態によらず、鍋11の温度を上記2つの保温機能による保温温度よりも高い温度(例えば、85℃)にて維持する高温保温へと移行するよう構成している。他の構成は上記実施の形態1と同じである。
(Embodiment 3)
The control board (control means) 21 shown in FIG. 1 has a constant temperature keeping function for maintaining the temperature of the pan 11 at a predetermined heat keeping temperature (for example, 74 ° C.), and the temperature of the pan 11 is at least two levels according to the heat keeping elapsed time. It has two heat-retaining functions, ie, a variable temperature heat-retaining function that is maintained at a heat-retaining temperature (for example, 74 ° C. and 60 ° C.). It is configured to shift to a high temperature heat retention maintained at a temperature (for example, 85 ° C.) higher than the heat retention temperature by the two heat retention functions. Other configurations are the same as those of the first embodiment.
上記構成において図5を参照しながら再加熱時の動作を説明する。図5は、本実施の形態における炊飯器にて、保温を行っているときに、時間t1のタイミングで保温ボタン28を操作したときの鍋11の温度(底温度センサー13の検出温度)と放熱板17の温度(蓋温度センサー19の検出温度)の変化を示すものである。 The operation at the time of reheating will be described with reference to FIG. FIG. 5 shows the temperature of the pan 11 (detected temperature of the bottom temperature sensor 13) and heat dissipation when the heat retention button 28 is operated at the timing of time t1 when the rice cooker in the present embodiment is performing heat insulation. The change of the temperature of the plate 17 (detection temperature of the lid temperature sensor 19) is shown.
図5において、破線32は、定温保温機能である高め保温に含まれる74℃維持工程において底温度センサー13にて検知している鍋11の温度である。また、点線33は、変温保温機能である低温保温に含まれる60℃維持工程において底温度センサー13にて検知している鍋11の温度、破線34は、定温保温機能である高め保温に含まれる74℃維持工程において蓋温度センサー19にて検知している放熱板17の温度、点線35は、変温保温機能である低温保温に含まれる60℃維持工程において蓋温度センサー19にて検知している放熱板17の温度であるが、鍋11の温度と放熱板17の温度はほぼ同じ温度であるため重なっている。t1、t10、t11、t12、t13、t14、t15は経過時間を示している。また、実線部は2つの保温機能の鍋11の温度が重なっている部分を示している。 In FIG. 5, the broken line 32 is the temperature of the pan 11 detected by the bottom temperature sensor 13 in the 74 ° C. maintaining step included in the high temperature keeping function which is a constant temperature keeping function. Further, the dotted line 33 indicates the temperature of the pan 11 detected by the bottom temperature sensor 13 in the 60 ° C. maintenance process included in the low temperature heat retention function, which is a variable temperature heat retention function, and the broken line 34 is included in the high heat retention function which is a constant temperature heat retention function. The temperature of the heat radiating plate 17 detected by the lid temperature sensor 19 in the 74 ° C. maintenance step, and the dotted line 35 are detected by the lid temperature sensor 19 in the 60 ° C. maintenance step included in the low temperature insulation that is the temperature-variation and insulation function. The temperature of the heat sink 17 is overlapped because the temperature of the pan 11 and the temperature of the heat sink 17 are substantially the same temperature. t1, t10, t11, t12, t13, t14, and t15 indicate elapsed times. Moreover, the continuous line part has shown the part with which the temperature of the pan 11 of two heat retention functions has overlapped.
高め保温時に、時間t1において、保温ボタン28を押して再加熱操作を行ったときの動作は、上記実施の形態1における鍋温度30、放熱板温度31、t1、t2、t3、t4、t5、t6をそれぞれ鍋温度32、放熱板温度34、t1、t10、t12、t13、t14、t15としたものと同じである。 The operation when the reheating operation is performed by pressing the heat retention button 28 at the time t1 during the high heat retention is the pan temperature 30, the heat sink temperature 31, t1, t2, t3, t4, t5, t6 in the first embodiment. Are the same as the pan temperature 32, the radiator plate temperature 34, t1, t10, t12, t13, t14, and t15, respectively.
一方、低温保温時に時間t1において、保温ボタン28を押して再加熱操作を行うと、所定のプログラムにしたがって加熱コイル12や蓋ヒータ18による加熱を行い鍋11の温度33が90℃に到達するとブザーが鳴り、再加熱動作が終了する(時間t11)。再加熱動作終了後は、高め保温での維持温度である74℃よりも高い温度である85℃にて維持する高温保温へと移行する。使用者はブザー音により再加熱動作の終了を知り、再加熱米飯を食するために蓋14を開放する(時間t12)。蓋14が開放されると、放熱板17は外気に触れることにより、放熱板17の温度35が低下する。その後、蓋14が閉められると、放熱板17は外気に触れることがなくなり、放熱板17の温度35が上昇する。 On the other hand, when the reheating operation is performed by pressing the heat retention button 28 at time t1 during the low temperature heat retention, the buzzer is activated when the heating coil 12 or the lid heater 18 is heated according to a predetermined program and the temperature 33 of the pan 11 reaches 90 ° C. Sounds and the reheating operation ends (time t11). After completion of the reheating operation, the temperature shifts to a high temperature heat retention maintained at 85 ° C., which is higher than the 74 ° C. maintenance temperature. The user knows the end of the reheating operation by the buzzer sound, and opens the lid 14 to eat the reheated cooked rice (time t12). When the lid 14 is opened, the heat dissipating plate 17 comes into contact with the outside air, and the temperature 35 of the heat dissipating plate 17 decreases. Thereafter, when the lid 14 is closed, the heat radiating plate 17 is not exposed to the outside air, and the temperature 35 of the heat radiating plate 17 rises.
すなわち、放熱板17の温度35が所定温度T1(例えば、77℃)以下になったのを検出し(時間t13)、その後蓋14が閉められた(時間t14)後、所定温度T1よりも高温の所定温度T2以上(例えば、81℃)になったのを検出する(時間t15)と、再加熱前の保温状態である60℃維持工程へ移行する。 That is, it is detected that the temperature 35 of the heat radiating plate 17 has become equal to or lower than a predetermined temperature T1 (for example, 77 ° C.) (time t13), and then the lid 14 is closed (time t14), and then the temperature is higher than the predetermined temperature T1. When the temperature reaches a predetermined temperature T2 or higher (for example, 81 ° C.) (time t15), the process proceeds to a 60 ° C. maintaining step, which is a temperature maintaining state before reheating.
再加熱前の保温機能の状態によらず、放熱板17の温度が一定以下になったのを検出しない場合は、85℃での高温保温に滞在するプログラムとなっている。よって、使用者は、再加熱前の保温機能の状態によらず、再加熱動作終了後は、常に熱い状態の保温米飯を食することができる。 Regardless of the state of the heat retaining function before reheating, if it is not detected that the temperature of the heat radiating plate 17 has become below a certain level, the program stays at a high temperature heat retaining at 85 ° C. Therefore, the user can always eat hot cooked rice after the reheating operation, regardless of the state of the warming function before reheating.
以上のように、本実施の形態では、鍋11の温度を所定の保温温度(74℃)で維持する定温保温機能と、鍋11の温度を保温経過時間に応じて2水準以上の保温温度(74℃と60℃)で維持する変温保温機能の2つの保温機能を有し、再加熱操作後は、再加熱前の保温機能状態によらず、鍋11の温度を上記2つの保温機能による保温温度よりも高い温度にて維持する高温保温へと移行するよう構成しているので、使用者が蓋14を開けたときには再加熱前の保温機能状態によらず、常に熱い状態の保温米飯を食することができる。 As described above, in the present embodiment, the constant temperature keeping function for maintaining the temperature of the pan 11 at a predetermined heat keeping temperature (74 ° C.), and the temperature of the pan 11 at two or more levels according to the heat keeping elapsed time ( 74 degrees Celsius and 60 degrees Celsius), and the temperature of the pan 11 depends on the above two heat retaining functions regardless of the state of the heat retaining function before the reheating after the reheating operation. Since it is configured to shift to a high temperature insulation that is maintained at a temperature higher than the insulation temperature, when the user opens the lid 14, the heated rice that is always hot is used regardless of the state of the insulation function before reheating. You can eat.
なお、本実施の形態では、放熱板17の温度34、35が所定温度T1(77℃)以下になったのを検出し(時間t13)、その後蓋14が閉められた(時間t14)後、所定温度T1よりも高温の所定温度T2(81℃)以上になったのを検出する(時間t15)と、すぐに再加熱前の保温温度にて維持する保温へ移行するようにしているが、放熱板17の温度34、35が所定温度T1よりも高温の所定温度T2(81℃)以上になったのを検出する(時間t15)と、一定時間経過後に再加熱前の保温温度にて維持する保温へ移行してもよく、同様な効果が得られる。 In the present embodiment, it is detected that the temperatures 34 and 35 of the heat radiating plate 17 have become equal to or lower than the predetermined temperature T1 (77 ° C.) (time t13), and then the lid 14 is closed (time t14). When it is detected that the temperature is higher than the predetermined temperature T2 (81 ° C.) higher than the predetermined temperature T1 (time t15), the temperature is immediately shifted to the heat retention maintained at the heat retention temperature before reheating. When it is detected that the temperature 34, 35 of the heat radiating plate 17 is equal to or higher than the predetermined temperature T2 (81 ° C.) higher than the predetermined temperature T1 (time t15), the temperature is maintained at the temperature before reheating after a predetermined time. The same effect can be obtained.
さらに、本実施の形態では、放熱板17の温度34、35が所定温度T1(77℃)以下になったのを検出し(時間t13)、その後蓋14が閉められた(時間t14)後、所定温度T1よりも高温の所定温度T2(81℃)以上になったのを検出する(時間t15)と、すぐにもしくは一定時間経過後に再加熱前の保温温度にて維持する保温へ移行するようにしているが、蓋14が閉められる(時間t14)前に、放熱板17の温度34、35が所定温度T1よりも高温の所定温度T2(81℃)以上になったのを検出しても、すぐもしくは一定時間経過後に再加熱前の保温温度にて維持する保温へ移行するようにしてもよく、同様な効果が得られる。 Furthermore, in the present embodiment, it is detected that the temperatures 34 and 35 of the heat radiating plate 17 have become equal to or lower than the predetermined temperature T1 (77 ° C.) (time t13), and then the lid 14 is closed (time t14). When it is detected that the temperature is higher than the predetermined temperature T2 (81 ° C.), which is higher than the predetermined temperature T1 (time t15), the temperature is maintained immediately or after a certain time has elapsed, the temperature is maintained at the temperature before reheating. However, before the lid 14 is closed (time t14), it is detected that the temperatures 34 and 35 of the heat radiating plate 17 have become higher than the predetermined temperature T2 (81 ° C.) higher than the predetermined temperature T1. Alternatively, it may be possible to shift to the heat retention maintained at the heat retention temperature before reheating immediately or after a certain period of time, and the same effect can be obtained.
(実施の形態4)
図1に示す制御基板(制御手段)21は、再加熱開始時にLCD23に再加熱を開始したことがわかるように表示し、再加熱後、LCD23の表示内容を高温保温状態であることを表示し、所定時間(例えば、15分以上)を経過しても蓋温度センサー19により放熱板17の温度が所定温度T1(例えば、77℃)以下になるのを検出しない場合、再加熱前の保温機能状態へ移行するようにし、LCD23に保温の状態が再加熱前の保温状態であることを表示するようにしている。他の構成は上記実施の形態1と同じである。
(Embodiment 4)
The control board (control means) 21 shown in FIG. 1 displays on the LCD 23 at the start of reheating so that it can be seen that reheating has started, and after reheating, displays the content displayed on the LCD 23 as being in a high temperature heat insulation state. If the lid temperature sensor 19 does not detect that the temperature of the heat radiating plate 17 falls below a predetermined temperature T1 (for example, 77 ° C.) even after a predetermined time (for example, 15 minutes or more) has passed, the heat retaining function before reheating The state is shifted to the state, and the LCD 23 displays that the heat retention state is the heat retention state before reheating. Other configurations are the same as those of the first embodiment.
上記構成において図6を参照しながら再加熱時の動作を説明する。図6は、本実施の形態における炊飯器にて保温を行っているときに、時間t1のタイミングで保温ボタン28を操作したときの鍋11の温度(底温度センサー13の検出温度)と放熱板17の温度(蓋温度センサー19の検出温度)の変化を示すものである。 The operation at the time of reheating will be described with reference to FIG. 6 in the above configuration. FIG. 6 shows the temperature of the pan 11 (detected temperature of the bottom temperature sensor 13) and the heat radiating plate when the heat retention button 28 is operated at the timing of time t1 when the rice cooker in this embodiment is performing heat insulation. 17 shows a change in temperature 17 (detection temperature of the lid temperature sensor 19).
図6において、37は底温度センサー13にて検出している鍋11の温度、38は蓋温度センサー19にて検出している放熱板17の温度であるが、ほぼ同じ温度であるため重なっている。t1、t16、t17は経過時間を示している。 In FIG. 6, 37 is the temperature of the pan 11 detected by the bottom temperature sensor 13, and 38 is the temperature of the radiator plate 17 detected by the lid temperature sensor 19. Yes. t1, t16, and t17 indicate elapsed times.
保温時に時間t1において保温ボタン28を操作し再加熱操作を行うと、LCD23に再加熱状態の表示を行い、所定のプログラムにしたがって加熱コイル12や蓋ヒータ18
による加熱を行い、鍋11の温度37が90℃に到達するとブザーが鳴り、再加熱動作が終了する(時間t16)。再加熱動作終了後は、高温保温へと移行するとともに、LCD23の表示を高温保温状態に変更し、制御基板21に設けている計時手段(図示せず)にて高温保温工程滞在時間を計時する。何らかの事情により使用者が蓋14を開放できず、放熱板17が外気に触れることがないために放熱板17の温度38が所定温度T1(77℃)以下になるのを検出せずに高温保温に滞在したまま所定時間(15分以上)が経過する(時間t17)と、放熱板17の温度38が一定温度以下になるのを検出せずとも再加熱前の保温状態へ移行し、LCD23の表示を再加熱前の保温状態の表示に変更する。
When the heat retention button 28 is operated and the reheating operation is performed at time t1 during the heat retention, the reheat state is displayed on the LCD 23, and the heating coil 12 and the lid heater 18 are displayed according to a predetermined program.
When the temperature 37 of the pan 11 reaches 90 ° C., a buzzer sounds and the reheating operation ends (time t16). After completion of the reheating operation, the process shifts to high temperature heat insulation, the display on the LCD 23 is changed to the high temperature heat insulation state, and the high temperature heat insulation process staying time is measured by the time measuring means (not shown) provided on the control board 21. . Since the user cannot open the lid 14 for some reason and the heat radiating plate 17 does not touch the outside air, the temperature 38 of the heat radiating plate 17 is kept at a high temperature without detecting that the temperature 38 is lower than the predetermined temperature T1 (77 ° C.). If a predetermined time (15 minutes or more) elapses while staying in (time t17), the temperature of the heat radiating plate 17 is shifted to a heat retaining state before reheating without detecting that the temperature 38 of the heat radiating plate 17 is below a certain temperature. Change the display to the display of the heat insulation state before reheating.
これにより、何らかの事情により使用者が再加熱操作を行いつつも、直ぐには米飯を食さなかった場合において、高温保温による米飯の劣化を抑えることができ、結果、保温米飯を美味しく食する時間を長くすることができ、便利である。 As a result, when the user performs the reheating operation for some reason and does not immediately eat the cooked rice, the deterioration of the cooked rice due to the high temperature heat insulation can be suppressed, and as a result, the time to eat the warm cooked rice deliciously Can be long and convenient.
さらに、再加熱後の高温保温状態から再加熱前の保温状態へ移行したことを表示するので、使用者が再加熱操作を行ったものの、何らかの理由によりご飯を食さなかった場合などに、再加熱前の保温状態に戻っていることを使用者に報知でき、使用者の求める熱さの保温状態でないことが簡単に判断できる。 In addition, since it is displayed that the high temperature heat retention state after reheating has shifted to the heat retention state prior to reheating, if the user performs a reheating operation but does not eat rice for some reason, The user can be informed that the state has been returned to the heat-retaining state before heating, and it can be easily determined that the heat-requiring state is not required.
以上のように、本実施の形態によれば、再加熱後、所定時間を経過しても蓋温度センサー19により放熱板17の温度が所定温度T1以下になるのを検出しない場合、再加熱前の保温機能状態へ移行するようにしたので、何らかの事情により使用者が再加熱操作を行いつつも、直ぐには米飯を食さなかった場合において、高温保温による米飯の劣化を抑えることができ、使用者がおいしく米飯を食することができる時間を長くできる。 As described above, according to the present embodiment, after the reheating, if the lid temperature sensor 19 does not detect that the temperature of the heat radiating plate 17 becomes equal to or lower than the predetermined temperature T1 even after a predetermined time has elapsed, before the reheating. Since the transition to the heat insulation function state of the user, while the user performs reheating operation for some reason, when the rice is not eaten immediately, the deterioration of the cooked rice due to the high temperature heat insulation can be suppressed and used The time when the person can eat rice deliciously can be lengthened.
また、再加熱後の高温保温状態から再加熱前の保温状態へ移行したことを表示するようにしたので、使用者が再加熱操作を行ったものの何らかの理由によりご飯を食さなかった場合などに、再加熱前の保温状態に戻っていることを使用者に報知できる。 In addition, it has been displayed that it has transitioned from the high temperature heat insulation state after reheating to the heat insulation state before reheating, so if the user did not eat rice for some reason even though the user performed a reheating operation The user can be informed that the state has been returned to the heat-retaining state before reheating.
(実施の形態5)
図1に示す制御基板(制御手段)21は、再加熱開始時にLCD23に再加熱を開始したことがわかるように表示し、再加熱後、LCD23の表示内容を高温保温状態であることを表示し、所定時間(例えば、15分以上)を経過しても底温度センサー13により鍋11の温度が所定温度T3(例えば、82℃)以下になるのを検出しない場合、再加熱前の保温機能状態へ移行するようにし、LCD23に保温の状態が再加熱前の保温状態であることを表示するようにしている。他の構成は上記実施の形態1と同じである。
(Embodiment 5)
The control board (control means) 21 shown in FIG. 1 displays on the LCD 23 at the start of reheating so that it can be seen that reheating has started, and after reheating, displays the content displayed on the LCD 23 as being in a high temperature heat insulation state. If the bottom temperature sensor 13 does not detect that the temperature of the pan 11 falls below a predetermined temperature T3 (for example, 82 ° C.) even after a predetermined time (for example, 15 minutes or more) has passed, the heat retaining function state before reheating And the LCD 23 displays that the state of heat insulation is the state of heat insulation before reheating. Other configurations are the same as those of the first embodiment.
上記構成において図7を参照しながら再加熱時の動作を説明する。図7は、本実施の形態における炊飯器にて保温を行っているときに、時間t1のタイミングで保温ボタン28を操作したときの鍋11の温度(底温度センサー13の検出温度)の変化を示すものである。 The operation at the time of reheating will be described with reference to FIG. 7 in the above configuration. FIG. 7 shows the change in the temperature of the pan 11 (detected temperature of the bottom temperature sensor 13) when the heat retention button 28 is operated at the timing of time t1 when the rice cooker in the present embodiment is performing heat insulation. It is shown.
図7において、39は底温度センサー13にて検出している鍋11の温度、t1、t18、t19は経過時間を示している。 In FIG. 7, 39 indicates the temperature of the pan 11 detected by the bottom temperature sensor 13, and t1, t18, t19 indicate the elapsed time.
保温時に時間t1において保温ボタン28を操作し再加熱操作を行うと、LCD23に再加熱状態の表示を行い、所定のプログラムにしたがって加熱コイル12や蓋ヒータ18による加熱を行い、鍋11の温度39が90℃に到達するとブザーが鳴り、再加熱動作が終了する(時間t18)。再加熱動作終了後は、高温保温へと移行するとともに、LCD23の表示を高温保温状態に変更し、制御基板21に設けている計時手段(図示せず)にて高温保温工程滞在時間を計時する。何らかの事情により使用者が蓋14を開放できず、
鍋11内の米飯や鍋11の上部が外気に触れることがないために、鍋の温度39が所定温度T3(82℃)以下になるのを検出せずに高温保温に滞在したまま所定時間(15分以上)が経過する(時間t19)と、鍋11の温度39が一定温度以下になるのを検出せずとも再加熱前の保温状態へ移行し、LCD23の表示を再加熱前の保温状態の表示に変更する。
When the reheat operation is performed by operating the heat retention button 28 at the time t1 during the heat retention, the reheat state is displayed on the LCD 23, and the heating coil 12 and the lid heater 18 are heated according to a predetermined program. When the temperature reaches 90 ° C., a buzzer sounds and the reheating operation ends (time t18). After completion of the reheating operation, the process shifts to high temperature heat insulation, the display on the LCD 23 is changed to the high temperature heat insulation state, and the high temperature heat insulation process staying time is measured by the time measuring means (not shown) provided on the control board 21. . The user cannot open the lid 14 for some reason,
Since the cooked rice in the pan 11 and the upper part of the pan 11 do not come into contact with the outside air, it is not detected that the pan temperature 39 is lower than the predetermined temperature T3 (82 ° C.) and stays at a high temperature for a predetermined time ( When 15 minutes or more have elapsed (time t19), the temperature 39 of the pan 11 is shifted to the warming state before reheating without detecting that the temperature 39 of the pan 11 falls below a certain temperature, and the display on the LCD 23 is kept warming before the reheating. Change to the display.
これにより、何らかの事情により使用者が再加熱操作を行いつつも、直ぐには米飯を食さなかった場合において、高温保温による米飯の劣化を抑えることができ、結果、保温米飯を美味しく食する時間を長くすることができ、便利である。 As a result, when the user performs the reheating operation for some reason and does not immediately eat the cooked rice, the deterioration of the cooked rice due to the high temperature heat insulation can be suppressed, and as a result, the time to eat the warm cooked rice deliciously Can be long and convenient.
さらに、再加熱後の高温保温状態から再加熱前の保温状態へ移行したことを表示するので、使用者が再加熱操作を行ったものの、何らかの理由によりご飯を食さなかった場合などに、再加熱前の保温状態に戻っていることを使用者に報知でき、使用者の求める熱さの保温状態でないことが簡単に判断できる。 In addition, since it is displayed that the high temperature heat retention state after reheating has shifted to the heat retention state prior to reheating, if the user performs a reheating operation but does not eat rice for some reason, The user can be informed that the state has been returned to the heat-retaining state before heating, and it can be easily determined that the heat-requiring state is not required.
以上のように、本実施の形態によれば、再加熱後、所定時間を経過しても底温度センサー13により鍋11の温度が所定温度T3以下になるのを検出しない場合、再加熱前の保温機能状態へ移行するようにしたので、何らかの事情により使用者が再加熱操作を行いつつも、直ぐには米飯を食さなかった場合において、高温保温による米飯の劣化を抑えることができ、使用者がおいしく米飯を食することができる時間を長くできる。 As described above, according to the present embodiment, if the bottom temperature sensor 13 does not detect that the temperature of the pan 11 is equal to or lower than the predetermined temperature T3 even after a predetermined time has elapsed after reheating, Since the transition to the heat insulation function state has been made, when the user does not eat the rice immediately while performing the reheating operation for some reason, the deterioration of the rice due to the high temperature heat insulation can be suppressed. The time when you can eat delicious rice can be lengthened.
また、再加熱後の高温保温状態から再加熱前の保温状態へ移行したことを表示するようにしたので、使用者が再加熱操作を行ったものの何らかの理由によりご飯を食さなかった場合などに、再加熱前の保温状態に戻っていることを使用者に報知できる。 In addition, it has been displayed that it has transitioned from the high temperature heat insulation state after reheating to the heat insulation state before reheating, so if the user did not eat rice for some reason even though the user performed a reheating operation The user can be informed that the state has been returned to the heat-retaining state before reheating.
以上のように、本発明にかかる炊飯器は、再加熱操作を行った後、蓋が開けられ内蓋の温度が低下するまで高温で保温されるので、蓋を開けたときには、常に熱い状態の保温米飯を食することができるので、保温機能を有する炊飯器として有用である。 As described above, the rice cooker according to the present invention is kept at a high temperature until the lid is opened and the temperature of the inner lid is lowered after performing the reheating operation. Since it can eat warm rice, it is useful as a rice cooker having a heat retaining function.
10 炊飯器本体
10b 上面開口部
11 鍋
12 加熱コイル(鍋加熱手段)
13 底温度センサー(鍋温度検出手段)
14 蓋
17 放熱板(内蓋)
19 蓋温度センサー(蓋温度検出手段)
21 制御基板(制御手段)
DESCRIPTION OF SYMBOLS 10 Rice cooker main body 10b Upper surface opening part 11 Pan 12 Heating coil (pan heating means)
13 Bottom temperature sensor (pan temperature detection means)
14 Lid 17 Heat sink (Inner lid)
19 Lid temperature sensor (Lid temperature detection means)
21 Control board (control means)
Claims (2)
前記保温機能動作中に再加熱操作により動作する再加熱機能の終了後は、前記所定の保温温度よりも高くかつ再加熱機能動作の終了時の温度よりも低い温度にて維持する高温保温へと移行し、前記蓋温度検出手段により前記内蓋の温度が所定温度T1以下になったのを検出し、さらに所定温度T1より高温の所定温度T2以上になったのを検出した後、一定時間後に再加熱前の保温状態へ移行するよう構成した炊飯器。 A rice cooker body having an open top surface, a pan that is detachably stored in the rice cooker body, a pan heating means for heating the pan, a lid that covers the top opening of the rice cooker body so as to be openable and closable, A pan temperature detecting means for detecting the temperature of the pan, a lid temperature detecting means for detecting the temperature of the inner lid provided on the lid facing the pan, and a control means for controlling the pan heating means, The control means has a heat retaining function for maintaining the temperature of the pan at a predetermined heat retaining temperature, and a reheating function for raising the temperature of the pan to a temperature higher than the predetermined heat retaining temperature,
Heat retaining function in operation after the end of the reheating function that operates by reheating operation, high temperature insulation to maintain at predetermined retained temperature lower have temperature than the temperature at the end of also operating coincide with high reheating function from to the proceeds, after the temperature of the inner lid by the lid temperature detecting means detects a was equal to or less than a predetermined temperature T1, were detected more became to temperatures higher than the predetermined temperature T2 than the predetermined temperature T1, a constant A rice cooker configured to shift to a heat retaining state before reheating after time .
前記制御手段は、前記鍋の温度を所定の保温温度に維持する保温機能と、前記保温機能動作状態で前記鍋の温度を前記所定の保温温度よりも高い温度に上昇させる再加熱機能とを有し、前記保温機能動作中に再加熱操作により動作する再加熱機能の終了後は、前記所定の保温温度よりも高くかつ再加熱機能動作の終了時の温度よりも低い温度にて維持する高温保温へと移行し、前記鍋温度検出手段により前記鍋の温度が所定温度T3以下になったのを検出し、さらに所定温度T3より高温の所定温度T4以上になったのを検出した後、一定時間後に再加熱前の保温状態へ移行するよう構成した炊飯器。 A rice cooker body having an open top surface, a pan that is detachably stored in the rice cooker body, a pan heating means for heating the pan, a lid that covers the top opening of the rice cooker body so as to be openable and closable, A pan temperature detecting means for detecting the temperature of the pan, and a control means for controlling the pan heating means,
The control means has a heat retaining function for maintaining the temperature of the pan at a predetermined heat retaining temperature, and a reheating function for increasing the temperature of the pan to a temperature higher than the predetermined heat retaining temperature in the heat retaining function operating state. and, after the end of the reheating function that operates by reheating operation in the heat retaining function operation will be maintained at low have a temperature higher than the temperature at the end of coincide with high reheat function operation than the predetermined retained temperature After moving to high temperature insulation, after detecting that the temperature of the pan has become a predetermined temperature T3 or less by the pan temperature detecting means, and further detecting that the temperature has become higher than the predetermined temperature T4 higher than the predetermined temperature T3, A rice cooker configured to shift to a heat retaining state before reheating after a certain time .
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