JP2008301853A

JP2008301853A - Rice cooker

Info

Publication number: JP2008301853A
Application number: JP2007148891A
Authority: JP
Inventors: Norio Ikeda; 典生池田; Nobuko Ichiki; 暢子市来
Original assignee: Panasonic Corp
Current assignee: Panasonic Corp
Priority date: 2007-06-05
Filing date: 2007-06-05
Publication date: 2008-12-18

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice cooker capable of cooking delicious rice by improving the temperature detection accuracy of a pot temperature detection means while achieving the original role of a cooling means. <P>SOLUTION: The rice cooker is provided with a rice cooker main body 1, a pot 2 freely detachably housed in the rice cooker main body 1, a pot heating means 13 for heating the pot 2, the pot temperature detection means 15 for detecting the temperature of the pot, a control means 41 for controlling the pot heating means 13 on the basis of the output of the pot temperature detection means 15, and a cooling means 46 for cooling heat generating members including the control means 41, wherein the cooling operation of the cooling means 46 is regulated in at least one of a water-immersing process and a steaming process in rice cooking processes. Thus, the cooling operation of the cooling means 46 is regulated in at least one of the water-immersing process and the steaming process with weak heating power, the pot temperature detection means 15 accurately detects the temperature of the pot without being affected by the cooling means 46, and the pot heating means 13 is highly accurately controlled. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、一般家庭あるいは業務用に使用する誘導加熱方式などの炊飯器に関するものである。 The present invention relates to a rice cooker such as an induction heating system used for general household or business use.

従来、この種の炊飯器においては、炊飯中、加熱コイルなどの鍋加熱手段やその制御手段などの発熱部材にファンよりなる冷却手段により送風しつづけて冷却するようにしている（例えば、特許文献１参照）。
特開平１１−０００２６０号公報 Conventionally, in this type of rice cooker, during rice cooking, the heating means such as a heating coil and the heating means such as the control means are continuously blown by a cooling means comprising a fan to be cooled (for example, patent document). 1).
Japanese Patent Laid-Open No. 11-026060

しかしながら、前記従来の構成では、冷却手段が炊飯開始から炊飯終了まで動作すると、鍋加熱手段やその制御手段などの発熱部材が冷却され、発熱部材の熱による破損などが防止できるが、同時に、鍋底に接して設けた鍋温度検知手段も冷却される。そのため、鍋の温度の検知が正確に行えないという課題を有していた。 However, in the conventional configuration, when the cooling means operates from the start of rice cooking to the end of rice cooking, the heating members such as the pan heating means and the control means are cooled, and the heating member can be prevented from being damaged by heat. The pan temperature detecting means provided in contact with the plate is also cooled. Therefore, there was a problem that the temperature of the pan could not be detected accurately.

本発明は、前記従来の課題を解決するもので、冷却手段の本来の役割を果たしつつ、鍋温度検知手段の温度検知精度を向上させて、おいしいご飯を炊くことができる炊飯器を提供することを目的とする。 This invention solves the said conventional subject, providing the rice cooker which can cook delicious rice by improving the temperature detection precision of a pan temperature detection means, fulfilling the original role of a cooling means. With the goal.

前記従来の課題を解決するために、本発明の炊飯器は、炊飯器本体と、炊飯器本体に着脱自在に収納する鍋と、この鍋を加熱する鍋加熱手段と、鍋の温度を検知する鍋温度検知手段と、鍋温度検知手段の出力に基づき鍋加熱手段を制御する制御手段と、制御手段を含む発熱部材を冷却する冷却手段とを有し、炊飯工程における浸水工程とむらし工程との少なくとも一方の工程において冷却手段の冷却動作を規制するようにしたものである。 In order to solve the above-mentioned conventional problems, the rice cooker of the present invention detects a rice cooker body, a pan detachably stored in the rice cooker body, a pan heating means for heating the pan, and the temperature of the pan. The pot temperature detecting means, the control means for controlling the pot heating means based on the output of the pot temperature detecting means, and the cooling means for cooling the heat generating member including the control means, the water immersion process and the unevenness process in the rice cooking process, The cooling operation of the cooling means is regulated in at least one of the steps.

これによって、弱い火力の浸水工程とむらし工程との少なくとも一方の工程において冷却手段の冷却動作が規制され、鍋温度検知手段は冷却手段による影響がなくなり、鍋の温度を正確に検知でき、鍋加熱手段を高精度で制御することができる。 As a result, the cooling operation of the cooling means is regulated in at least one of the weak thermal power soaking process and the unevenness process, the pot temperature detecting means is not affected by the cooling means, and the pot temperature can be accurately detected. The heating means can be controlled with high accuracy.

本発明の炊飯器は、鍋温度検知手段の冷却手段による影響をなくし、鍋の温度を正確に検知して、鍋加熱手段を高精度で制御することができる。 The rice cooker of the present invention can eliminate the influence of the cooling means of the pan temperature detecting means, accurately detect the temperature of the pot, and control the pot heating means with high accuracy.

第１の発明は、炊飯器本体と、炊飯器本体に着脱自在に収納する鍋と、この鍋を加熱する鍋加熱手段と、鍋の温度を検知する鍋温度検知手段と、鍋温度検知手段の出力に基づき鍋加熱手段を制御する制御手段と、制御手段を含む発熱部材を冷却する冷却手段とを有し、炊飯工程における浸水工程とむらし工程との少なくとも一方の工程において冷却手段の冷却動作を規制するようにした炊飯器とするものである。これによって、弱い火力の浸水工程とむらし工程との少なくとも一方の工程において冷却手段の冷却動作が規制され、鍋温度検知手段は冷却手段による影響がなくなり、鍋の温度を正確に検知でき、鍋加熱手段を高精度で制御することができる。 1st invention is a rice cooker main body, the pan accommodated in a rice cooker main body, the pan heating means which heats this pan, the pan temperature detection means which detects the temperature of a pan, and the pan temperature detection means Control means for controlling the pot heating means based on the output and cooling means for cooling the heat generating member including the control means, and cooling operation of the cooling means in at least one of the water immersion process and the unevenness process in the rice cooking process The rice cooker is designed to regulate the above. As a result, the cooling operation of the cooling means is regulated in at least one of the weak thermal power soaking process and the unevenness process, the pot temperature detecting means is not affected by the cooling means, and the pot temperature can be accurately detected. The heating means can be controlled with high accuracy.

第２の発明は、特に、第１の発明において、冷却手段による冷却動作の規制は、冷却手段を停止するようにしたことにより、冷却手段による鍋温度検知手段への影響が皆無となり、鍋の温度を正確に検知でき、鍋加熱手段を高精度で制御することができる。 In the second invention, in particular, in the first invention, the regulation of the cooling operation by the cooling means is such that the cooling means is stopped, so that there is no influence on the pot temperature detecting means by the cooling means. The temperature can be detected accurately, and the pan heating means can be controlled with high accuracy.

第３の発明は、特に、第１または第２の発明において、炊飯の浸水工程とむらし工程との冷却手段による冷却動作の規制を異なるものとしたことにより、浸水工程とむらし工程との状況に応じた冷却動作の規制ができ、冷却手段の本来の役割を果たしつつ、鍋温度検知手段の温度検知精度を向上させることができる。 In particular, in the first or second invention, the third invention is that the regulation of the cooling operation by the cooling means in the water immersion process and the unevenness process of rice cooking is different, so that the water immersion process and the unevenness process are The cooling operation can be regulated according to the situation, and the temperature detection accuracy of the pan temperature detection means can be improved while playing the original role of the cooling means.

第４の発明は、特に、第１〜第３のいずれか１つの発明において、制御手段の温度を検知する基板温度検知手段を有し、この基板温度検知手段の出力に基づき冷却手段を規制することにより、室温が高い時など、制御手段や鍋加熱手段の異常な温度上昇を防止するために、冷却手段を規制する時間を制御し、冷却効果を確保して炊飯器の信頼性の向上させることができる。 In particular, according to a fourth invention, in any one of the first to third inventions, there is provided a substrate temperature detecting means for detecting the temperature of the control means, and the cooling means is regulated based on the output of the substrate temperature detecting means. By controlling the time to regulate the cooling means to prevent abnormal temperature rise of the control means and pan heating means, such as when the room temperature is high, to ensure the cooling effect and improve the reliability of the rice cooker be able to.

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、図２は、本発明の実施の形態１における炊飯器を示すものである。 (Embodiment 1)
1 and 2 show a rice cooker according to Embodiment 1 of the present invention.

図１に示すように、本実施の形態における炊飯器は、炊飯器本体１と、炊飯器本体１に着脱自在に収納する鍋２と、この鍋２を加熱する鍋加熱手段１３と、鍋２の温度を検知する鍋温度検知手段１５と、鍋温度検知手段１５の出力に基づき鍋加熱手段１３を制御する制御手段４１と、制御手段４１を含む発熱部材を冷却する冷却手段４６とを有している。 As shown in FIG. 1, the rice cooker in this Embodiment is the rice cooker main body 1, the pan 2 detachably accommodated in the rice cooker main body 1, the pan heating means 13 for heating the pan 2, and the pan 2 A pot temperature detecting means 15 for detecting the temperature of the pot, a control means 41 for controlling the pot heating means 13 based on the output of the pot temperature detecting means 15, and a cooling means 46 for cooling the heat generating member including the control means 41. ing.

冷却手段４６は、炊飯工程における浸水工程の全てあるいは一部において冷却動作が規制されている。すなわち、冷却動作を停止、あるいは冷却風量・風力を低減するようにしている。 The cooling operation of the cooling means 46 is regulated in all or part of the water immersion process in the rice cooking process. That is, the cooling operation is stopped or the cooling air volume / wind power is reduced.

鍋２は外面がステンレスで内面がアルミニウムにフッ素をコーティングしたものである。そして、３ヶ所均等に配置し炊飯器本体１より突出した鍋を支持する部材である上枠キャップ２５により鍋２のフランジ部１１が支持されている。炊飯器本体１の外郭は上面を上枠４３、側下面をボディ２４で構成している。 The pan 2 has a stainless steel outer surface and an aluminum inner surface coated with fluorine. And the flange part 11 of the pan 2 is supported by the upper frame cap 25 which is a member which supports the pan protruded from the rice cooker main body 1 evenly arranged at three places. The outer shape of the rice cooker main body 1 includes an upper frame 43 on the upper surface and a body 24 on the lower side surface.

ボディ２４には冷却手段４６により外気を取り込むための吸気口３５と、炊飯器本体１内の空気を排出する排気口４４を備えている。鍋２の収納部は耐熱性のある樹脂で成形した保護枠２３で構成し、底部中央に鍋２の温度を検知するバネにより鍋２底方向へ押圧力を有する鍋温度検知手段１５と、保護枠２３の下面に鍋２を加熱する電磁誘導加熱方式の鍋加熱手段１３を備えている。鍋加熱手段１３は内側と外側に分割して配置した、鍋２の下部に位置する内加熱コイル１４ａと、鍋２の側下部に位置する外加熱コイル１４ｂとにより構成している。この鍋加熱手段１３は表面に絶縁層３１であるポリエステル系樹脂をコーティングした銅線を複数本束ねて撚ったコイル線である。 The body 24 is provided with an intake port 35 for taking in outside air by the cooling means 46 and an exhaust port 44 for discharging the air in the rice cooker body 1. The storage part of the pan 2 is composed of a protective frame 23 formed of a heat-resistant resin, a pan temperature detecting means 15 having a pressing force toward the bottom of the pan 2 by a spring for detecting the temperature of the pan 2 at the center of the bottom, and protection. An electromagnetic induction heating type pot heating means 13 for heating the pot 2 is provided on the lower surface of the frame 23. The pan heating means 13 is configured by an inner heating coil 14 a located at the lower part of the pan 2 and an outer heating coil 14 b located at the lower side of the pan 2, which are divided into an inner side and an outer side. This pan heating means 13 is a coil wire obtained by bundling a plurality of copper wires whose surfaces are coated with a polyester resin that is an insulating layer 31.

炊飯器本体１後方には鍋加熱手段１３を制御する制御手段４１を備え、制御手段４１には吸気口３５に対向する位置に炊飯器本体１内に外気を取り込む冷却手段４６と、冷却手段４６に設けアルミニウムで成形した放熱用のフィン４７と、スイッチング素子や整流素子などの高電力素子４９を備えている。そして、保護枠２３より延設した制御手段支持台３９により支持されビスにより固定されている。 Control means 41 for controlling the pan heating means 13 is provided at the rear of the rice cooker body 1. The control means 41 has a cooling means 46 for taking outside air into the rice cooker body 1 at a position facing the inlet 35, and a cooling means 46. And a heat dissipation fin 47 formed of aluminum and a high power element 49 such as a switching element or a rectifying element. And it is supported by the control means support stand 39 extended from the protective frame 23, and is fixed with the bis | screw.

冷却手段４６はフィン４７に延接した冷却手段支持部３４により支持されビスにより固定されていて、制御手段４１や鍋加熱手段１３などの発熱部材を冷却する。 The cooling means 46 is supported by a cooling means support portion 34 extending in contact with the fins 47 and fixed by screws, and cools heat generating members such as the control means 41 and the pot heating means 13.

また、コードリール（図示せず）を制御手段４１の側方でプラグを炊飯器本体１後方側に引き出すよう配置している。 Further, a cord reel (not shown) is arranged on the side of the control means 41 so that the plug is pulled out to the rear side of the rice cooker body 1.

内加熱コイル１４ａと外加熱コイル１４ｂの外方にはフェライト１７を均等に備えており、磁束が炊飯器本体１外へ漏れるのを防止し、かつ鍋２への誘導加熱を促進する働きをしている。さらに、鍋加熱手段１３の側外方には帯状のアルミニウム板をおよそ環状にした防磁材２２を配置し、防磁性能の向上を行っている。 The outer side of the inner heating coil 14a and the outer heating coil 14b is provided with the ferrite 17 evenly, which prevents the magnetic flux from leaking out of the rice cooker body 1 and promotes induction heating to the pan 2. ing. Further, a magnetic shielding material 22 in which a belt-shaped aluminum plate is formed in an annular shape is arranged outside the pan heating means 13 to improve the magnetic shielding performance.

炊飯器本体１上方には、鍋２の上面を覆い操作表示部６を備える蓋３が炊飯器本体１の後方に構成したヒンジ部７に軸結合され開閉自在に設置されている。蓋３の操作表示部６の上面は表示内容が視認できるよう透明に成形しており、操作表示部６は機能や動作状態を表示し、かつブザーなどの音により報知し、炊飯器の動作や停止を操作するボタンにより構成した起動手段４を配置し、炊飯動作を制御する制御部５を有している。 Above the rice cooker body 1, a lid 3 that covers the upper surface of the pan 2 and includes an operation display unit 6 is axially coupled to a hinge portion 7 formed at the rear of the rice cooker body 1 so as to be openable and closable. The upper surface of the operation display unit 6 of the lid 3 is formed so as to be visible so that the display content can be visually recognized. The operation display unit 6 displays the function and the operation state, and notifies by sound such as a buzzer. The starting means 4 comprised by the button which operates stop is arrange | positioned, and it has the control part 5 which controls rice cooking operation | movement.

蓋３内には蓋３の開閉状態により動作するマグネットとマグネットを検知するリードスイッチとにより構成した蓋開閉検知手段１８を備えており、蓋３の開閉状態を検知することができる。 The lid 3 is provided with lid opening / closing detection means 18 composed of a magnet that operates according to the opening / closing state of the lid 3 and a reed switch that detects the magnet, so that the opening / closing state of the lid 3 can be detected.

ヒンジ部７には蓋３を開放方向に付勢するヒンジバネ２０を設けており、蓋３はヒンジバネ２０により自動で開放する。 The hinge portion 7 is provided with a hinge spring 20 that urges the lid 3 in the opening direction, and the lid 3 is automatically opened by the hinge spring 20.

炊飯器本体１のヒンジ部７の反対方向にはバネにより押圧力を有するフックボタン１９を備え、蓋３側のフック２１をフックボタン１９で上方より保持することにより蓋３を閉状態で保持する。 A hook button 19 having a pressing force by a spring is provided in the opposite direction of the hinge portion 7 of the rice cooker body 1, and the lid 3 is held in the closed state by holding the hook 21 on the lid 3 side from above. .

さらに、蓋３の鍋２対向面には鍋２内を加熱し蓋３に着脱自在の加熱板８を配置し、蓋３内部には加熱板８を加熱する電磁誘導加熱方式の加熱板加熱コイル２６と加熱板８の温度を検知するバネにより加熱板８へ押圧力を有する加熱板温度検知手段１６を備えている。加熱板８には外周を鍋２のフランジ部１１に圧接しシールする鍋パッキン２８と鍋パッキン２８を保持する加熱板支え２７を備えている。 Furthermore, a heating plate 8 that heats the inside of the pan 2 and is detachably attached to the lid 3 is arranged on the surface of the lid 3 facing the pan 2, and a heating plate heating coil of an electromagnetic induction heating system that heats the heating plate 8 inside the lid 3. 26 and a spring for detecting the temperature of the heating plate 8 are provided with a heating plate temperature detecting means 16 having a pressing force to the heating plate 8. The heating plate 8 includes a pot packing 28 that presses and seals the outer periphery to the flange portion 11 of the pot 2 and a heating plate support 27 that holds the pot packing 28.

加熱板８には鍋２内と蓋３とを連通する蒸気孔９を備え、蓋３には外気と蒸気孔９とを連通する蒸気筒１０を備えている。 The heating plate 8 includes a steam hole 9 that communicates the inside of the pan 2 and the lid 3, and the lid 3 includes a steam cylinder 10 that communicates the outside air and the steam hole 9.

炊飯器本体１側面には炊飯器を持ち運ぶ時に使用するハンドル１２を備えている。 A handle 12 used when carrying the rice cooker is provided on the side of the rice cooker body 1.

以上のように構成された炊飯器について、以下その動作、作用を説明する。 About the rice cooker comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

使用者は炊飯を行う米とその米量に対応する水を鍋２入れ、炊飯器本体１の所定の状態にセットする。操作表示部６に設けた起動手段４により動作開始操作をすると、あらかじめ制御部５に設定している炊飯工程が実施される。 The user puts rice corresponding to the rice to be cooked and water corresponding to the amount of the rice into two pots, and sets the rice cooker body 1 in a predetermined state. When the operation start operation is performed by the activation means 4 provided in the operation display unit 6, the rice cooking process set in the control unit 5 in advance is performed.

マイコン制御式炊飯器においては、ご飯をおいしく炊くために、江戸時代からの言い伝えである「はじめチョロチョロ、中パッパ、ブツブツいうころ火を引いてひとにぎりの藁燃やし赤子泣くとも蓋取るな」になぞり、米に水を吸水させる浸水工程と、一気に鍋内の温度を上げて沸騰させる炊き上げ工程と、沸騰を維持させてお米のでんぷんを糊化させてご飯にする沸騰維持工程と、炊き上がったご飯を最後の「ひとにぎりの藁をくべる」の通り少し焼いたあと蒸らして鍋内を均一に仕上げるむらし工程からなっている。 In the microcomputer-controlled rice cooker, in order to cook rice deliciously, it is a tradition from the Edo period that traces to `` Do not take the lid even if you crawl a little bit and burn a baby with a flash of fire '' The rice was soaked with water, the boiling process to raise the temperature in the pan at a boil, the boiling process to maintain the boiling and gelatinize the rice starch, and the rice was cooked It consists of an uneven process in which the rice is cooked a little as shown in the last section, “Make a rice ball” and steamed to finish the pan evenly.

炊飯工程は、図２（ａ）に示すように、浸水工程Ａ（時間ｔ１、検知温度Ｔ１）、炊き上げ工程Ｂ（時間任意、検知温度Ｔ１―Ｔ２）、沸騰維持工程Ｃ（時間任意、検知温度Ｔ２―Ｔ３）、蒸らし工程Ｄ（時間ｔ２、検知温度Ｔ３―Ｔ２）の各工程に大別される。 As shown in FIG. 2 (a), the rice cooking process includes a water immersion process A (time t1, detection temperature T1), a cooking process B (time arbitrary, detection temperature T1-T2), a boiling maintenance process C (time arbitrary, detection). Temperature T2-T3) and steaming process D (time t2, detected temperature T3-T2).

浸水工程Ａは米を５５〜６０℃で保持することにより米に水を吸水させる工程である。この浸水工程Ａにおいてはこの温度が鍋２内の米が水を充分にさらに均一に吸水するための必要条件となる。 The water immersion process A is a process in which the rice is allowed to absorb water by holding the rice at 55 to 60 ° C. In this submerged step A, this temperature is a necessary condition for the rice in the pan 2 to absorb water sufficiently evenly.

炊き上げ工程Ｂでは吸水した米に一気に熱を加えて炊き上げ、沸騰維持工程Ｃでは沸騰を維持させてお米のでんぷんを糊化させてご飯にしている。炊飯においては炊き上げ工程Ｂと沸騰維持工程Ｃが最も加熱を必要とする工程である。これらの工程においては、鍋加熱手段１３への通電は多くなり、制御手段４１や鍋加熱手段１３の発熱も大きくなるので、図２（ｂ）に示すように、冷却手段４６を動作させる。 In the cooking process B, heat is applied to the absorbed rice and then cooked. In the boiling maintenance process C, boiling is maintained and the starch of rice is gelatinized to make rice. In cooking rice, the cooking process B and the boiling maintenance process C are processes that require the most heating. In these steps, the energization of the pan heating means 13 is increased, and the heat generated by the control means 41 and the pan heating means 13 is also increased, so that the cooling means 46 is operated as shown in FIG.

むらし工程Ｄでは、炊き上がったご飯を最後の「ひとにぎりの藁をくべる」の通り少し焼いたあと蒸らして鍋２内を均一に仕上げる工程であり、この工程で炊飯を終了する。 In the murashi process D, the cooked rice is boiled a little as shown in the last “Hit the rice ball” and steamed to finish the pan 2 uniformly, and the cooking is finished in this process.

炊き上げ工程Ｂや沸騰維持工程Ｃでは鍋２には強い火力を供給し、また鍋２の温度も高いので冷却手段４６の風による鍋温度検知手段１５の温度検知精度に与える影響はほとんどないが、浸水工程Ａでは鍋２には弱い火力しか供給せず、また鍋２の温度も低い（５５〜６０℃）ので、冷却手段４６の風による鍋温度検知手段１５の温度検知精度に与える影響は大きく、炊き上がりのご飯の食味を低下させるものである。 In the cooking process B and the boiling maintenance process C, a strong heating power is supplied to the pan 2 and the temperature of the pan 2 is high, so there is almost no influence on the temperature detection accuracy of the pan temperature detection means 15 by the wind of the cooling means 46. In the submergence process A, only a weak heating power is supplied to the pan 2 and the temperature of the pan 2 is low (55 to 60 ° C.), so the influence of the wind of the cooling unit 46 on the temperature detection accuracy of the pan temperature detecting unit 15 is It is large and reduces the taste of cooked rice.

そこで、本実施の形態では、浸水工程Ａの全てあるいは一部において冷却手段４６を規制して、すなわち停止、あるいは風量・風力を低減して、冷却手段４６による鍋温度検知精度への影響をなくしている。 Therefore, in the present embodiment, the cooling means 46 is regulated in all or part of the flooding process A, that is, stopped or reduced in air volume / wind power, so that the influence of the cooling means 46 on the accuracy of detecting the pot temperature is eliminated. ing.

以上のように、本実施の形態においては、弱い火力の浸水工程において冷却手段の冷却動作が規制され、鍋温度検知手段は冷却手段による影響がなくなり、鍋の温度を正確に検知でき、鍋加熱手段を高精度で制御することができる。これにより、おいしいご飯を炊くことができるものである。 As described above, in the present embodiment, the cooling operation of the cooling means is regulated in the submerged process of weak thermal power, the pot temperature detecting means is not affected by the cooling means, the temperature of the pot can be accurately detected, and the pot heating The means can be controlled with high accuracy. Thereby, delicious rice can be cooked.

（実施の形態２）
次に、本発明の実施の形態２における炊飯器について説明する。炊飯器の構成は実施の形態１と同一であるので、その説明を省略する。 (Embodiment 2)
Next, the rice cooker in Embodiment 2 of this invention is demonstrated. Since the structure of the rice cooker is the same as that of Embodiment 1, the description thereof is omitted.

本実施の形態では、炊飯工程におけるむらし工程Ｄの全てあるいは一部において冷却動作が規制されている。すなわち、冷却動作を停止、あるいは冷却風量・風力を低減するようにしている。 In the present embodiment, the cooling operation is regulated in all or part of the unevenness process D in the rice cooking process. That is, the cooling operation is stopped or the cooling air volume / wind power is reduced.

実施の形態１において説明したように、炊き上げ工程Ｂや沸騰維持工程Ｃでは鍋２には強い火力を供給し、また鍋２の温度も高いので冷却手段４６の風による鍋温度検知手段１５の温度検知精度に与える影響はほとんどないが、むらし工程Ｄでは鍋２には弱い火力しか供給しないので、冷却手段４６の風による鍋温度検知手段１５の温度検知精度に与える影響は大きく、炊き上がりのご飯の食味を低下させるものである。 As explained in the first embodiment, in the cooking process B and the boiling maintenance process C, a strong heating power is supplied to the pan 2 and the temperature of the pan 2 is high. Although there is almost no influence on the temperature detection accuracy, only a weak heating power is supplied to the pan 2 in the unevenness process D, so the influence of the wind of the cooling means 46 on the temperature detection accuracy of the pan temperature detection means 15 is large, and cooking is completed. The taste of rice is reduced.

そこで、本実施の形態では、むらし工程Ｄの全てあるいは一部において冷却動作を規制しているものである。 Therefore, in this embodiment, the cooling operation is regulated in all or part of the unevenness process D.

なお、冷却動作の規制は、浸水工程Ａとむらし工程Ｄの一方の工程のみ行ってもよいが、図２（ｂ）に示しているように、浸水工程Ａとむらし工程Ｄとの両工程において冷却動作を規制するようにしてもよい。また、浸水工程Ａとむらし工程Ｄとの両工程において冷却動作を規制する場合、浸水工程Ａとむらし工程Ｄは、炊き上げ工程Ｂや沸騰維持工程Ｃに比べて弱い火力しか供給していないが、その雰囲気温度など状況が異なるので、例えば、浸水工程Ａでは冷却動作を停止するが、むらし工程Ｄでは風量・風力を低減して発熱部材を冷却しつづけるように、冷却動作の規制を異なるものとすることにより、浸水工程Ａとむらし工程Ｄとの状況に応じた冷却動作の規制ができ、冷却手段４６の本来の役割を果たしつつ、鍋温度検知手段１５の温度検知精度を向上させることができる。 The regulation of the cooling operation may be performed only in one of the water immersion process A and the unevenness process D, but both the water immersion process A and the unevenness process D are performed as shown in FIG. The cooling operation may be regulated in the process. Further, when the cooling operation is regulated in both the submerged process A and the unevenness process D, the submerged process A and the unevenness process D supply only a weaker thermal power than the cooking process B and the boiling maintenance process C. Although there are different conditions such as the ambient temperature, for example, the cooling operation is stopped in the submerged process A, but the cooling operation is regulated so that the heat generation member is continuously cooled by reducing the air volume and the wind force in the uneven process D. By making different, the cooling operation can be regulated according to the situation of the flooding process A and the unevenness process D, and the temperature detection accuracy of the pan temperature detection means 15 can be increased while playing the original role of the cooling means 46. Can be improved.

以上のように、本実施の形態においては、むらし工程においても、冷却手段による鍋温度検知精度への影響をなくし、鍋加熱手段を高精度な温度制御により適正な温度で浸水工程を実施することによりおいしいご飯を炊くことができる。 As described above, in the present embodiment, even in the uneven process, the influence of the cooling means on the pan temperature detection accuracy is eliminated, and the pot heating means is subjected to the water immersion process at an appropriate temperature by high-precision temperature control. You can cook delicious rice.

（実施の形態３）
図３は、本発明の実施の形態３における炊飯器の要部を示している。実施の形態１における炊飯器と同一部分については、同一符号を付してその説明を省略し、相違点のみ説明する。 (Embodiment 3)
FIG. 3 shows a main part of the rice cooker according to Embodiment 3 of the present invention. About the same part as the rice cooker in Embodiment 1, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and only a different point is demonstrated.

図に示すように、本実施の形態における炊飯器は、制御手段４１の温度を検知する基板温度検知手段４８を有し、この基板温度検知手段４８の出力に基づき冷却手段４６を規制するようにしたものである。 As shown in the figure, the rice cooker in the present embodiment has a substrate temperature detecting means 48 for detecting the temperature of the control means 41, and the cooling means 46 is regulated based on the output of the substrate temperature detecting means 48. It is a thing.

使用者が炊飯を行う米とその米量に対応する水を鍋２入れ、本体１の所定の状態にセットする。操作表示部６に設けた起動手段４により動作開始操作をすると、あらかじめ制御部５に設定している炊飯工程が実施され、炊飯工程が浸水、炊き上げ、沸騰維持、蒸らしの各工程に大別されるのは実施の形態１と同じである。 A user puts rice for cooking rice and water corresponding to the amount of rice into two pans and sets the main body 1 in a predetermined state. When an operation start operation is performed by the activation means 4 provided in the operation display unit 6, the rice cooking process set in the control unit 5 in advance is performed, and the rice cooking process is roughly divided into each process of soaking, cooking, boiling maintenance, and steaming. This is the same as in the first embodiment.

浸水工程Ａとむらし工程Ｄとの少なくとも一方の工程において冷却手段４６の冷却動作を規制して、冷却手段４６による鍋温度検知精度への影響をなくしていることも実施の形態１、２と同じである。 Embodiments 1 and 2 also restrict the cooling operation of the cooling means 46 in at least one of the water immersion process A and the unevenness process D, and eliminate the influence of the cooling means 46 on the pan temperature detection accuracy. The same.

ここで、炊飯器本体１が設置されている室温が高い場合には、浸水工程Ａやむらし工程Ｄでは鍋加熱手段１３による鍋２に供給する火力が弱いにもかかわらず、制御手段４１や鍋加熱手段１３などの温度が上昇し、これらの信頼性が損なわれることになるので、基板温度検知手段４８が所定の温度を超えた場合には、冷却手段４６を動作させて、制御手段４１や鍋加熱手段１３などの温度上昇を抑えている。 Here, when the room temperature at which the rice cooker body 1 is installed is high, the control means 41 and the water heating process 13 and the unevenness process D are weak although the heating power supplied to the pot 2 by the pot heating means 13 is weak. Since the temperature of the pan heating means 13 and the like rises and their reliability is impaired, when the substrate temperature detecting means 48 exceeds a predetermined temperature, the cooling means 46 is operated and the control means 41 is operated. And the temperature rise of the pan heating means 13 is suppressed.

以上のように、本実施の形態においては、冷却手段を停止する時間を制御し、冷却効果を確保して炊飯器の信頼性の向上させることができる。 As mentioned above, in this Embodiment, the time which stops a cooling means is controlled, the cooling effect is ensured and the reliability of a rice cooker can be improved.

以上のように、本発明にかかる炊飯器は、鍋温度検知手段の冷却手段による影響をなくし、鍋の温度を正確に検知して、鍋加熱手段を高精度で制御することができるので、熱源方式如何にかかわらず、一般家庭あるいは業務用の炊飯器に適用できる。 As described above, the rice cooker according to the present invention eliminates the influence of the cooling means of the pot temperature detecting means, accurately detects the temperature of the pot, and can control the pot heating means with high accuracy. Regardless of the method, it can be applied to rice cookers for general household or business use.

本発明の実施の形態１、２における炊飯器の断面図Sectional drawing of the rice cooker in Embodiment 1, 2 of this invention （ａ）炊飯工程を示す工程図（ｂ）炊飯工程における冷却手段の動作を示す図(A) Process drawing which shows rice cooking process (b) The figure which shows operation | movement of the cooling means in a rice cooking process 本発明の実施の形態３における炊飯器の要部断面図Sectional drawing of the principal part of the rice cooker in Embodiment 3 of this invention.

符号の説明Explanation of symbols

１炊飯器本体
２鍋
１３鍋加熱手段
１５鍋温度検知手段
４１制御手段
４６冷却手段
４８基板温度検知手段 DESCRIPTION OF SYMBOLS 1 Rice cooker body 2 Pan 13 Pan heating means 15 Pan temperature detection means 41 Control means 46 Cooling means 48 Substrate temperature detection means

Claims

炊飯器本体と、炊飯器本体に着脱自在に収納する鍋と、この鍋を加熱する鍋加熱手段と、鍋の温度を検知する鍋温度検知手段と、鍋温度検知手段の出力に基づき鍋加熱手段を制御する制御手段と、制御手段を含む発熱部材を冷却する冷却手段とを有し、炊飯工程における浸水工程とむらし工程との少なくとも一方の工程において冷却手段の冷却動作を規制するようにした炊飯器。 A rice cooker body, a pan detachably stored in the rice cooker body, a pan heating means for heating the pan, a pan temperature detection means for detecting the temperature of the pan, and a pot heating means based on the output of the pan temperature detection means And a cooling means for cooling the heat generating member including the control means, and the cooling operation of the cooling means is regulated in at least one of the water immersion process and the unevenness process in the rice cooking process. rice cooker.

冷却手段による冷却動作の規制は、冷却手段を停止するようにした請求項１に記載の炊飯器。 The rice cooker according to claim 1, wherein the regulation of the cooling operation by the cooling means is such that the cooling means is stopped.

炊飯の浸水工程とむらし工程との冷却手段による冷却動作の規制を異なるものとした請求項１に記載の炊飯器。 The rice cooker according to claim 1, wherein the regulation of the cooling operation by the cooling means of the rice soaking process and the unevenness process is different.

制御手段の温度を検知する基板温度検知手段を有し、この基板温度検知手段の出力に基づき冷却手段を規制する請求項１〜３のいずれか１項に記載の炊飯器。 The rice cooker according to any one of claims 1 to 3, further comprising a substrate temperature detecting means for detecting a temperature of the control means, and regulating the cooling means based on an output of the substrate temperature detecting means.