JP2010125027A - Rice cooker - Google Patents

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JP2010125027A
JP2010125027A JP2008302083A JP2008302083A JP2010125027A JP 2010125027 A JP2010125027 A JP 2010125027A JP 2008302083 A JP2008302083 A JP 2008302083A JP 2008302083 A JP2008302083 A JP 2008302083A JP 2010125027 A JP2010125027 A JP 2010125027A
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water
lid
rice
heating
pan
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Shunpei Ando
俊平 安藤
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Panasonic Corp
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Panasonic Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice cooker capable of improving the taste of rice without deformation or trouble caused by the temperature rise in a heated lid or lid heating means. <P>SOLUTION: The rice cooker includes: a steam generating part 9 to be heated by the lid heating means 13 for generating steam from water stored in a lid heating plate 8 which heats the inside of a pot 2 from above; a steam heating part 27 for heating the generated steam; a water presence detecting means for detecting presence of water stored in the lid heating plate 8; and a rice cooking menu selecting means. The water presence detecting means is configured to determine that water is not present when the temperature detected by the temperature detecting means is a prescribed temperature or lower. The prescribed temperature is variable according to the rice cooking menu selected by the menu selecting means. The rice cooker has different rice cooking programs for the case with water or without water respectively based on the information on the result of detection by the water presence detecting means about the presence of water stored in the lid heating plate. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、食味を向上させるために、過熱蒸気を利用する炊飯器に関するものである。   The present invention relates to a rice cooker that uses superheated steam to improve the taste.

一般的な家庭用の炊飯器においては、鍋内の米と水を加熱するために鍋底部に配置した鍋加熱手段が主であり、蓋内の加熱手段は鍋内の米、水の上方の空間を介するため、結果的に、補助的な加熱となる。   In general rice cookers for home use, the pan heating means placed at the bottom of the pan to heat the rice and water in the pan is the main, and the heating means in the lid is the rice in the pan above the water. As a result of the space, auxiliary heating results.

よって、鍋内上層の米は加熱量が不足し、鍋内の米、水を均一な加熱をすることができなかった。   Therefore, the upper layer rice in the pan was insufficient in heating amount, and the rice and water in the pan could not be heated uniformly.

さらに、本来炊飯においては、水がほぼ無くなり、米の流動性がなくなる炊飯の最終工程である蒸らし工程で、それまでの加熱を継続し、米澱粉の糊化を完成させることが美味なる飯を炊くために必須であるが、この工程で加熱を継続すると鍋底付近の米飯が焦げてしまうため加熱を弱めることが多かった。   Furthermore, in rice cooking, water is almost gone and rice is no longer fluid, so the rice cooking process is the final step of rice cooking. Although it is indispensable for cooking, when heating is continued in this step, the cooked rice near the bottom of the pot will be burnt, so that heating is often weakened.

加熱を弱めることに伴う糊化不足を防止し、食味を向上させるための手段としては、蓋内にあらかじめ水を貯留し前記水から蒸気を発生させ上部の加熱を促進する炊飯器が提案されている。   As a means for preventing insufficient gelatinization due to weakening of heating and improving the taste, rice cookers have been proposed in which water is stored in advance in the lid and steam is generated from the water to promote heating of the upper part. Yes.

図9はその具体的な構成を示すもので、炊飯器101は着脱自在に鍋102を収納するため、有底筒状の鍋収納部103を有す。   FIG. 9 shows the specific configuration, and the rice cooker 101 has a bottomed cylindrical pot storage portion 103 for storing the pot 102 in a detachable manner.

鍋収納部103の底部、および側部には、鍋102を誘導加熱する鍋加熱コイル104,105が設けられている。   Pan heating coils 104 and 105 for inductively heating the pan 102 are provided at the bottom and side of the pan storage unit 103.

106は底温度センサーで、鍋102の底面と当接するよう構成されている。制御手段107は炊飯器101の動作を制御する。   A bottom temperature sensor 106 is configured to come into contact with the bottom surface of the pan 102. The control means 107 controls the operation of the rice cooker 101.

また、炊飯器101の後部に軸支され、鍋102の上部を開閉する蓋108を備えている。   Moreover, the lid | cover 108 which is pivotally supported by the rear part of the rice cooker 101, and opens and closes the upper part of the pan 102 is provided.

蓋108には蓋加熱コイル109で誘導加熱される蓋加熱板110が設けられている。蓋加熱板110は蓋加熱板蒸気口111を有しており、蓋108の天面には蓋蒸気口112が設けられ、鍋102の内部は機外と連通して大気圧となっている。   The lid 108 is provided with a lid heating plate 110 that is induction-heated by a lid heating coil 109. The lid heating plate 110 has a lid heating plate steam port 111. A lid steam port 112 is provided on the top surface of the lid 108, and the inside of the pan 102 communicates with the outside of the machine and is at atmospheric pressure.

蒸気口パッキン113は、蓋加熱板110と蓋108に挟持されており、鍋パッキン114は、蓋108の閉時に蓋加熱板110と鍋102の上縁外周部にあるフランジ部の間で挟持されている。   The steam port packing 113 is sandwiched between the lid heating plate 110 and the lid 108, and the pan packing 114 is sandwiched between the lid heating plate 110 and the flange portion on the outer periphery of the upper edge of the pan 102 when the lid 108 is closed. ing.

また、蓋加熱板110上には、水を貯溜するとともに、蓋加熱コイル109の誘導加熱作用で蒸気を生成する蒸気発生部115が形成されている。   Further, on the lid heating plate 110, a steam generation unit 115 that stores water and generates steam by the induction heating action of the lid heating coil 109 is formed.

さらに、蒸気発生部115で発生した蒸気は、図示していない空間領域を蒸気投入口へと移動して鍋102の内部へと投入される。蓋加熱板110は全体が所定の高温度に維持されており、特に蒸気の通過部分を高温度にすることで、過熱蒸気を生成するようにしてある(例えば、特許文献1参照)。
特開2005−160917号公報
Furthermore, the steam generated in the steam generation unit 115 moves through a space region (not shown) to the steam inlet and is input into the pot 102. The entire lid heating plate 110 is maintained at a predetermined high temperature, and in particular, the superheated steam is generated by setting the passage portion of the steam to a high temperature (see, for example, Patent Document 1).
JP 2005-160917 A

しかしながら、上記の従来の構成の炊飯器では、使用者が誤って給水容器に水を入れないと、蓋加熱板に貯溜される水がなく、また十分な水を供給しないと、炊飯途中でなくなってしまい、蓋加熱板の温度上昇により鍋内上層の飯の水分が蒸発して乾燥し、逆に食味を低下させる恐れがある。また、蓋や蓋加熱手段などが温度上昇して変形や故障する恐れがあるという課題を有していた。   However, in the rice cooker having the above-described conventional configuration, if the user does not accidentally put water into the water supply container, there is no water stored in the lid heating plate, and if sufficient water is not supplied, it is not in the middle of cooking rice. If the temperature of the lid heating plate rises, the water in the upper layer of the pan evaporates and dries, which may lower the taste. In addition, there is a problem that the lid and the lid heating means may be deformed or broken due to a temperature rise.

本発明は、前記従来の課題を解決するもので、蓋加熱板に水が供給されない、もしくは炊飯途中で蓋加熱板に貯溜される水がなくなった場合でも、蓋加熱板の温度上昇による鍋内上層の飯の乾燥を低減することで、食味を向上させ、また、加熱により蓋や蓋加熱手段などが温度上昇して変形や故障することがない炊飯器を提供することを目的とする。   The present invention solves the above-mentioned conventional problems, and even when water is not supplied to the lid heating plate or water stored in the lid heating plate during cooking is lost, the temperature inside the lid heating plate increases. An object of the present invention is to provide a rice cooker that improves the taste by reducing the drying of the upper layer of rice and prevents the lid and lid heating means from being heated and deformed or broken by heating.

本発明は、上記課題を解決するもので、炊飯器本体の内部に収納される鍋と、前記鍋を加熱する鍋加熱手段と、前記鍋の開口部を覆う開閉自在な蓋と、前記鍋内を上方から加熱する蓋加熱板と、前記蓋加熱板を加熱する蓋加熱手段と、前記蓋加熱板に貯えた水を蒸気に生成する蒸気発生部と、前記生成した蒸気を加熱する蒸気加熱部と、前記蓋加熱板に貯えられた水の有無を検知する水有無検知手段と、炊飯メニューを選択するメニュー選択手段とを備え、前記水有無検知手段は、温度検知手段により検知された温度が所定の温度以下の場合に水が無いと判断するように構成され、前記所定の温度は前記メニュー選択手段により選択された炊飯メニューに応じて可変され、前記水有無検知手段が前記蓋加熱板に貯えられた水の有無を検知した情報を基に、水が有る場合と水が無い場合、それぞれの炊飯プログラムを有するものである。   This invention solves the said subject, the pan accommodated in the inside of a rice cooker main body, the pan heating means which heats the said pan, the lid | cover which can be opened and closed which covers the opening part of the said pan, and the inside of the said pan A lid heating plate for heating the lid heating plate, a lid heating means for heating the lid heating plate, a steam generating unit for generating water stored in the lid heating plate into steam, and a steam heating unit for heating the generated steam And water presence / absence detection means for detecting the presence / absence of water stored in the lid heating plate, and menu selection means for selecting a rice cooking menu, wherein the water presence / absence detection means has a temperature detected by the temperature detection means. It is configured to determine that there is no water when the temperature is equal to or lower than a predetermined temperature, the predetermined temperature is varied according to the rice cooking menu selected by the menu selection means, and the water presence / absence detection means is applied to the lid heating plate. Detected the presence or absence of stored water Based on distribution, if there is no case and water water is present, and has a respective cooking program.

本発明の炊飯器は、鍋内の米、水の加熱において不足する上方からの加熱を行い、かつ上方の乾燥を防止する炊飯器において、蓋加熱板に水が供給されない、もしくは炊飯途中で蓋加熱板に貯溜される水がなくなった場合でも、蓋加熱板の温度上昇による鍋内上層の飯の乾燥を低減することで、食味を向上させ、また加熱により蓋や蓋加熱手段などが温度上昇して変形や故障することがなくなり、より信頼性の高い炊飯器を提供するものである。   The rice cooker of the present invention is a rice cooker that performs heating from above, which is insufficient in heating the rice in the pot, and water, and prevents the drying of the upper side. Even when there is no water stored in the heating plate, the taste of the pan is improved by reducing the drying of the upper layer rice in the pan due to the temperature rise of the lid heating plate, and the temperature of the lid and lid heating means rises due to heating. Thus, the rice cooker is provided with a higher reliability without any deformation or failure.

第1の発明は、炊飯器本体の内部に収納される鍋と、前記鍋を加熱する鍋加熱手段と、前記鍋の開口部を覆う開閉自在な蓋と、前記鍋内を上方から加熱する蓋加熱板と、前記蓋加熱板を加熱する蓋加熱手段と、前記蓋加熱板に貯えた水を蒸気に生成する蒸気発生部と、前記生成した蒸気を加熱する蒸気加熱部と、前記蓋加熱板に貯えられた水の有無を検知する水有無検知手段と、炊飯メニューを選択するメニュー選択手段とを備え、前記水有無検知手段は、温度検知手段により検知された温度が所定の温度以下の場合に水が無いと判断するように構成され、前記所定の温度は前記メニュー選択手段により選択された炊飯メニューに応じて可変され、前記水有無検知手段が前記蓋加熱板に貯えられた水の有無を検知した情報を基に、水が有る場合と水が無い場合、それぞれの炊飯プログラムを有するものである。   1st invention is a lid stored in the inside of a rice cooker main body, the pan heating means which heats the said pan, the lid | cover which can be opened and closed which covers the opening part of the said pan, and the lid | cover which heats the inside of the said pan from upper direction A heating plate; lid heating means for heating the lid heating plate; a steam generating unit for generating water stored in the lid heating plate into steam; a steam heating unit for heating the generated steam; and the lid heating plate Water presence / absence detection means for detecting the presence / absence of water stored in the water and a menu selection means for selecting a rice cooking menu, wherein the water presence / absence detection means is detected when the temperature detected by the temperature detection means is equal to or lower than a predetermined temperature. The predetermined temperature is varied according to the rice cooking menu selected by the menu selection means, and the presence / absence of water stored in the lid heating plate is determined by the water presence / absence detection means. If there is water based on the detected information If there is no water, and has a respective cooking program.

したがって、炊飯途中で蓋加熱板に貯溜される水がなくなった場合には、水が無い場合に適した炊飯プログラムを動作させることにより、蓋加熱板の温度上昇による鍋内上層の飯の乾燥を低減し、食味を向上させるとともに、加熱により蓋や蓋加熱手段が温度上昇し
て変形や故障することをなくした炊飯器を提供することができる。
Therefore, when there is no water stored in the lid heating plate in the middle of cooking rice, by operating a rice cooking program that is suitable when there is no water, the rice in the upper layer in the pan is dried by the temperature rise of the lid heating plate. It is possible to provide a rice cooker that reduces and improves the taste and prevents the lid and the lid heating means from being heated and deformed or broken due to heating.

また、水有無検知手段を温度検知手段で構成したことにより、蓋加熱板に貯溜される水の有無を検知するだけでなく、貯溜されている水の温度を検知することができる。   Further, since the water presence / absence detection means is constituted by the temperature detection means, it is possible not only to detect the presence / absence of water stored in the lid heating plate, but also to detect the temperature of the stored water.

よって、蓋加熱板に貯溜される水を沸騰する100℃直前まで、上昇させた状態で保持して、蒸気を鍋内に投入するタイミングに合わせて蒸気を投入できるので、食味をさらに向上した炊飯器を提供することができる。   Therefore, the water stored in the lid heating plate can be kept in a raised state until just before 100 ° C. where the water is boiled, and steam can be introduced at the timing when the steam is introduced into the pan. Can be provided.

また、炊飯メニューを選択するメニュー選択手段を備え、前記水有無検知手段は、温度検知手段により構成され、所定の時点における前記温度検知手段による検知温度が所定の温度以下の場合に水が無いと判断することで構成され、所定の温度は前記メニュー選択手段により選択された炊飯メニューに応じて可変することにより、炊飯メニューに応じてより精度の高い水有無検知を行うことができ、より信頼性を向上させることができる。   Further, the apparatus includes menu selection means for selecting a rice cooking menu, wherein the water presence / absence detection means is constituted by a temperature detection means, and when there is no water when a temperature detected by the temperature detection means at a predetermined time is equal to or lower than a predetermined temperature. It is configured by determining, and by changing the predetermined temperature according to the rice cooking menu selected by the menu selection means, it is possible to detect the presence or absence of water with higher accuracy according to the rice cooking menu, and more reliable Can be improved.

第2の発明は、炊飯器本体の内部に収納される鍋と、前記鍋を加熱する鍋加熱手段と、前記鍋の開口部を覆う開閉自在な蓋と、前記鍋内を上方から加熱する蓋加熱板と、前記蓋加熱板を加熱する蓋加熱手段と、前記蓋加熱板に貯えた水を蒸気に生成する蒸気発生部と、前記生成した蒸気を加熱する蒸気加熱部と、前記蓋加熱板に貯えられた水の有無を検知する水有無検知手段と、炊飯中の米の炊飯量を判定する炊飯量判定手段とを備え、前記水有無検知手段は、温度検知手段により検知された温度が所定の温度以下の場合に水が無いと判断するように構成され、前記所定の温度は前記炊飯量判定手段により判定された炊飯量に応じて可変され、前記水有無検知手段が前記蓋加熱板に貯えられた水の有無を検知した情報を基に、水が有る場合と水が無い場合それぞれの炊飯プログラムを設けることにより、炊飯量に応じてより精度の高い水有無検知を行うことができ、より信頼性向上させることができる。   2nd invention is the lid accommodated in the inside of the rice cooker main body, the pan heating means which heats the said pan, the cover which can be opened and closed which covers the opening part of the said pan, and the lid which heats the inside of the said pan from the upper direction A heating plate; lid heating means for heating the lid heating plate; a steam generating unit for generating water stored in the lid heating plate into steam; a steam heating unit for heating the generated steam; and the lid heating plate Water presence / absence detection means for detecting the presence / absence of water stored in the rice and rice cooking amount determination means for determining the amount of rice cooked during cooking, the water presence / absence detection means has a temperature detected by the temperature detection means. It is configured to determine that there is no water when the temperature is equal to or lower than a predetermined temperature, the predetermined temperature is varied according to the amount of cooked rice determined by the cooked rice amount determining means, and the water presence / absence detecting means is the lid heating plate If there is water based on information on the presence or absence of water stored in By providing the respective cooking program when there is no more accurate water presence detection in accordance with the cooking volume can be performed, it is possible to further improve reliability.

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、本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 present embodiment.

(実施の形態1)
図1〜図4において、1は炊飯器の本体で、着脱自在の鍋2を内装している。さらに、鍋2の上面を覆う蓋3が開閉自在に設置されている。
(Embodiment 1)
1-4, 1 is the main body of a rice cooker, and is equipped with a detachable pan 2. Further, a lid 3 that covers the upper surface of the pan 2 is provided so as to be freely opened and closed.

また、4は鍋2を加熱する鍋加熱手段、5は鍋2の温度を検知する鍋温度検知手段で、本体1内部に配置してある。   Reference numeral 4 denotes a pan heating means for heating the pan 2, and 5 denotes a pan temperature detecting means for detecting the temperature of the pan 2, which is arranged inside the main body 1.

蓋3には蒸気となる水を蓄える給水タンク6が着脱自在に取り付られており、ポンプ7を介して前記給水タンク6の水をステンレスなどの磁性材からなる蓋加熱板8に供給するようにしている。   A water supply tank 6 for storing water that becomes steam is detachably attached to the lid 3, and water from the water supply tank 6 is supplied to a lid heating plate 8 made of a magnetic material such as stainless steel via a pump 7. I have to.

前記蓋加熱板8には水を貯留する凹部状の蒸気発生部9を備えている。図2に示すように、蒸気発生部9は凸部10により2分割されている。   The lid heating plate 8 is provided with a concave steam generator 9 for storing water. As shown in FIG. 2, the steam generation part 9 is divided into two by a convex part 10.

また、蒸気発生部9には5度の傾斜が設けられ、炊飯器が傾斜したところに置かれ、且つ水が少なくなったときでも常に水が所定位置に貯留するようにしている。   Further, the steam generator 9 is provided with an inclination of 5 degrees so that the rice cooker is placed at an inclination, and water is always stored at a predetermined position even when the amount of water is reduced.

11は鍋2内に前記蒸気発生部9で発生した水蒸気を供給する蒸気噴出口で、前記蒸気発生部9と対角の位置に設けられている。   Reference numeral 11 denotes a steam outlet for supplying the steam generated in the steam generating unit 9 into the pan 2 and is provided at a position diagonal to the steam generating unit 9.

12は前記蓋加熱板8に対向して設けた非磁性材製の蓋カバー、13は前記蓋カバー12の上面に設けられ、前記蓋加熱板8の中心の略真上に中心を有する誘導コイルからなる蓋加熱手段である。   Reference numeral 12 denotes a cover cover made of a non-magnetic material provided to face the cover heating plate 8, and 13 is an induction coil provided on the upper surface of the cover cover 12 and having a center substantially above the center of the cover heating plate 8. A lid heating means comprising:

また、前記蓋加熱板8の蒸気発生部9の凹部形状に合わせて蓋加熱手段13も凹部形状に設定してある。   Further, the lid heating means 13 is also set in a concave shape in accordance with the concave shape of the steam generating portion 9 of the lid heating plate 8.

そして、蓋加熱手段13には誘導コイルからなる補助加熱手段14が直列に接続されており、前記凸部10を加熱する位置に設けられている。   The lid heating means 13 is connected in series with an auxiliary heating means 14 formed of an induction coil, and is provided at a position for heating the convex portion 10.

15はフェライトで、蓋加熱手段13の上で、且つ投影位置で蒸気発生部9の位置に設けている。蓋加熱手段13、及びフェライト15の上にはアルミニウム製の蓋反射板16を配置している。   Reference numeral 15 denotes ferrite, which is provided on the lid heating means 13 and at the position of the steam generator 9 at the projection position. An aluminum lid reflector 16 is disposed on the lid heating means 13 and the ferrite 15.

17は温度検知手段で、前記蓋カバー12に取り付られている。図3に示すように、この温度検知手段17は温度により抵抗値を変える蓋サーミスタ18と、前記蓋サーミスタ18の後方から出ている2本のサーミスタリード線19を貫通するサーミスタ碍子20が前記サーミスタ18のガラス部と溶着されている。   Reference numeral 17 denotes a temperature detection means, which is attached to the lid cover 12. As shown in FIG. 3, the temperature detection means 17 includes a thermistor 18 that changes the resistance value according to temperature, and a thermistor insulator 20 that passes through two thermistor lead wires 19 protruding from the rear of the lid thermistor 18. It is welded to 18 glass parts.

前記サーミスタリード線19の外周には絶縁チューブ21が設けられて相互の短絡を防止している。   An insulating tube 21 is provided on the outer periphery of the thermistor lead wire 19 to prevent mutual short circuit.

蓋サーミスタ18は有底筒状のアルミニウムやステンレスでできたコンタクト22に内装保持されている。   The lid thermistor 18 is internally held by a contact 22 made of bottomed cylindrical aluminum or stainless steel.

蓋サーミスタ18の先端は、ポリイミドフィルム等の樹脂製のフィルムでできた絶縁フィルム23を介してコンタクト22の底面部に当接しており、また、側面外側には樹脂製のホルダー24が設けられ蓋サーミスタ18の姿勢を安定させると共に、コンタクト22とサーミスタリード線19の沿面距離を増やし、コンタクト22に人間等から入る静電気を防止する。   The front end of the lid thermistor 18 is in contact with the bottom surface of the contact 22 via an insulating film 23 made of a resin film such as a polyimide film, and a resin holder 24 is provided on the outside of the side surface. The posture of the thermistor 18 is stabilized, and the creepage distance between the contact 22 and the thermistor lead wire 19 is increased to prevent static electricity from entering the contact 22 from a human or the like.

コンタクト22は蓋加熱板8を蓋3に装着したときに、同蓋加熱板8の凸部10で、且つ補助加熱手段14の中心部に当接する位置に設けられ、蓋加熱板8の凸部10の温度を検出する。   The contact 22 is provided at the position of the convex portion 10 of the lid heating plate 8 and the center of the auxiliary heating means 14 when the lid heating plate 8 is attached to the lid 3, and the convex portion of the lid heating plate 8. 10 temperatures are detected.

回路基板25にはマイクロコンピュータ(図示しない)が搭載されている。マイクロコンピュータはソフトウエアにより、鍋加熱手段4及び蓋加熱手段13を制御する。   A microcomputer (not shown) is mounted on the circuit board 25. The microcomputer controls the pan heating means 4 and the lid heating means 13 by software.

26は蓋カバー12の外周部に設けられたパッキンで、前記蓋加熱板8、及び蓋カバーとで蒸気加熱部27を構成する。   26 is a packing provided on the outer periphery of the lid cover 12, and the lid heating plate 8 and the lid cover constitute a steam heating unit 27.

28は炊飯メニューを選択する炊飯メニュー選択手段であり、使用者の判断で少なくとも2つ以上ある炊飯メニューの中から所望の炊飯メニューを選択するもので、メニュー選択入力スイッチで構成されている。   28 is a rice cooking menu selection means for selecting a rice cooking menu, which selects a desired rice cooking menu from at least two rice cooking menus at the discretion of the user, and is constituted by a menu selection input switch.

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.

まず、炊飯を行う米とその米量に対応する水を鍋2に入れ、本体1の所定の状態に内装する。さらに給水タンク6内に所定量の水を入れて本体1にセットし、炊飯メニュー選択手段28により所望の炊飯メニューを選択した後、炊飯開始スイッチ(図示せず)を使用
者が操作すると、各炊飯メニュー毎にマイクロコンピュータに記憶させている少なくとも2つ以上ある所定のプログラムの中から、炊飯メニュー選択手段28により選択された炊飯メニューが選択され、選択された所定のプログラムにしたがって、ポンプ7を駆動し、給水タンク6に入れた水を蒸気発生部9に貯留させ、炊飯工程を実施する。
First, the rice which cooks rice and the water corresponding to the amount of the rice are put in the pan 2, and the main body 1 is decorated in a predetermined state. Furthermore, after putting a predetermined amount of water in the water supply tank 6 and setting it in the main body 1 and selecting a desired rice cooking menu by the rice cooking menu selection means 28, when the user operates a rice cooking start switch (not shown), The rice cooking menu selected by the rice cooking menu selection means 28 is selected from at least two predetermined programs stored in the microcomputer for each rice cooking menu, and the pump 7 is turned on according to the selected predetermined program. It drives and makes the steam generation part 9 store the water put into the water supply tank 6, and implements a rice cooking process.

炊飯工程は、浸水、炊き上げ、蒸らしの各工程で進行していき、鍋2内の米と水の状態が適正値として設定された温度や時間、加熱量で制御される。   A rice cooking process advances in each process of soaking, cooking, and steaming, and the state of the rice and water in the pan 2 is controlled by the temperature, time, and heating amount which were set as an appropriate value.

各工程における温度や時間、加熱量は各炊飯メニューに応じて異なり、最適な炊飯ができるように設定されている。   The temperature, time, and heating amount in each process vary depending on each rice cooking menu, and are set so that optimum rice cooking can be performed.

蒸気発生部9に貯留された水は炊飯中に発生する蒸気の潜熱により蓋加熱板8を介して熱交換され、炊き上げ工程後半には、沸騰状態となる。   The water stored in the steam generation unit 9 is heat-exchanged via the lid heating plate 8 by the latent heat of steam generated during rice cooking, and is brought into a boiling state in the latter half of the cooking process.

蒸らし工程に入ると、まず水有無検知工程が実施され、水が有ると判断すると、蓋加熱手段13により蓋加熱板8が加熱され、沸騰状態にある水の一部が直ちに蒸発し、蒸気を出す。   When the steaming process is started, a water presence / absence detection process is first performed. When it is determined that there is water, the lid heating plate 8 is heated by the lid heating means 13, and a part of the boiling water immediately evaporates to generate steam. put out.

この蒸気が蒸気加熱部27を通過する間に前記蓋加熱板8よりさらに加熱され100℃以上の過熱蒸気となり、蒸気噴出口11より鍋2内に放出される。   While this steam passes through the steam heating section 27, it is further heated from the lid heating plate 8 to become superheated steam of 100 ° C. or higher, and is discharged into the pot 2 from the steam outlet 11.

これにより、鍋2全体の加熱の局部的な温度上昇と上面とその近傍の米の乾燥を防止しつつ、鍋2内の底部の残留水分を除去することと、米の糊化を促進させることができ、おいしい飯を炊き上げることができる。   This removes residual moisture from the bottom of the pan 2 and promotes gelatinization while preventing local temperature rise of the entire pan 2 and drying of the rice in the upper surface and its vicinity. Can cook delicious rice.

蒸気発生部9に水が有る場合は、それを2分する凸部10も水近傍に位置するため、その凸部10の温度も水の温度とほぼ同様になっており、凸部10に当接する温度検知手段17により水の温度を検知することができる。   When there is water in the steam generating part 9, the convex part 10 that divides it into two is also located in the vicinity of the water, so that the temperature of the convex part 10 is substantially the same as the temperature of the water. The temperature of the water can be detected by the temperature detecting means 17 in contact therewith.

したがって、鍋2内に蒸気を投入する直前に蒸気発生部9の水の温度が適温(例えば、96℃)温度になるように、温度検知手段17によって、蒸気発生部9に貯溜された水の温度を制御することにより、炊飯中の所定の適確なタイミングで過熱蒸気を鍋2内に投入することができる。   Therefore, the water stored in the steam generating unit 9 by the temperature detecting means 17 is set so that the temperature of the water in the steam generating unit 9 becomes an appropriate temperature (for example, 96 ° C.) immediately before the steam is introduced into the pan 2. By controlling the temperature, superheated steam can be introduced into the pan 2 at a predetermined and accurate timing during cooking.

ここで、蒸気発生部9の水の温度は各炊飯メニュー毎に最適な温度になるように制御されることは言うまでも無い。   Here, it goes without saying that the temperature of the water in the steam generating unit 9 is controlled to be an optimum temperature for each rice cooking menu.

水有無検知工程については、図5、図6に示すような工程を設ける。   As for the water presence / absence detection step, steps as shown in FIGS. 5 and 6 are provided.

すなわち、図5でθは鍋温度検知手段の検知温度、Aは水が有る場合の温度検知手段17を構成する蓋サーミスタ18の検知温度、B−1は水がない場合の蓋サーミスタ18の検知温度、aは水が有る場合の炊飯プログラム、b−1は水が無い場合の炊飯プログラムを示す。   That is, in FIG. 5, θ is the temperature detected by the pan temperature detecting means, A is the temperature detected by the lid thermistor 18 constituting the temperature detecting means 17 when water is present, and B-1 is the temperature detected by the lid thermistor 18 when there is no water. Temperature, a shows the rice cooking program when there is water, b-1 shows the rice cooking program when there is no water.

図5、図6に示す水有無検知工程は蒸らし工程開始時、温度検知手段17の蓋サーミスタ18の検知温度により水の有無を検知するものである。   The water presence / absence detection process shown in FIGS. 5 and 6 detects the presence / absence of water based on the temperature detected by the lid thermistor 18 of the temperature detection means 17 at the start of the steaming process.

蒸らし工程開始時、蒸気発生部9に水がある場合には、凸部10の温度は沸騰状態の水の温度とほぼ同じ100℃近傍である。   At the start of the steaming process, when there is water in the steam generating part 9, the temperature of the convex part 10 is about 100 ° C., which is substantially the same as the temperature of the boiling water.

また、水が沸騰状態にあるため、微量ながら水は蒸発し、蒸気発生部9の空間には蒸気が発生している。   Further, since the water is in a boiling state, the water evaporates in a small amount, and steam is generated in the space of the steam generation unit 9.

したがって、蒸気発生部9の空間の温度もほぼ100℃近傍となっており、蓋サーミスタ18の温度も100℃近傍となる。   Therefore, the temperature of the space of the steam generation unit 9 is also approximately 100 ° C., and the temperature of the lid thermistor 18 is also approximately 100 ° C.

これに対して、蒸気発生部9に水が無い場合には、凸部10の温度が100℃近傍であるのに対し、コンタクト22周囲の蒸気発生部9の空間の温度は、鍋2、蓋加熱板8、蓋カバー12、パッキン26で囲まれた略閉鎖空間であるため、炊飯中に発生する蒸気がほとんど入り込まず、80℃近傍である。   On the other hand, when there is no water in the steam generation part 9, the temperature of the convex part 10 is around 100 ° C., whereas the temperature of the space of the steam generation part 9 around the contact 22 is the pan 2, the lid Since it is a substantially closed space surrounded by the heating plate 8, the lid cover 12, and the packing 26, the steam generated during cooking is hardly intruded and is around 80 ° C.

これより、凸部10とコンタクト22周囲の蒸気発生部8の空間の温度差から、凸部10から受熱した熱量はコンタクト22を通じ、コンタクト周囲の蒸気発生部8の空間へ放熱されるため、蓋サーミスタ18の温度は85℃近傍となる。   As a result, the amount of heat received from the convex portion 10 is radiated to the space of the steam generating portion 8 around the contact through the contact 22 because of the temperature difference between the convex portion 10 and the space around the steam generating portion 8 around the contact 22. The temperature of the thermistor 18 is around 85 ° C.

したがって、炊き上げ工程終了後、蒸らし工程開始時の蓋サーミスタ18の温度と所定の温度T1(例えば90℃)とを比較し、所定の温度T1より蓋サーミスタ18の温度が高い場合には水が有るとし、所定の温度T1より蓋サーミスタ18の温度が低い場合には水が無いとすることにより、水の有無に適したそれぞれの炊飯プログラムを動作させることができる。   Therefore, after the cooking process is completed, the temperature of the lid thermistor 18 at the start of the steaming process is compared with a predetermined temperature T1 (for example, 90 ° C.), and if the temperature of the lid thermistor 18 is higher than the predetermined temperature T1, Assuming that there is no water when the temperature of the lid thermistor 18 is lower than the predetermined temperature T1, each rice cooking program suitable for the presence or absence of water can be operated.

ここで、蒸らし工程開始時の所定の温度T1は、炊飯メニュー選択手段28により選択された炊飯メニューに応じて可変される。   Here, the predetermined temperature T <b> 1 at the start of the steaming process is varied according to the rice cooking menu selected by the rice cooking menu selection means 28.

例えば、玄米を炊飯する「玄米コース」では、炊飯対象となる玄米は硬い殻に覆われているため、米粒内に水と熱が入り込みにくいので、糊化しにくい。   For example, in the “brown rice course” in which brown rice is cooked, the brown rice to be cooked is covered with a hard shell, so that water and heat do not easily enter into the rice grain, and thus it is difficult to gelatinize.

したがって、炊き上げ工程における加熱量は、一般の白米等を炊飯するメニューと比較し、大きく、加熱時間も長く設定されている。その結果、「玄米コース」が選択されている場合には、蒸気発生部8に水が無い場合であっても、蒸らし工程初期において、鍋2、蓋加熱板8が十分に加熱された状態にあり、蒸気発生部9の空間の温度も、一般の白米等を炊飯するメニューと比較し高く、90℃近傍となる。   Therefore, the heating amount in the cooking step is set larger and the heating time is set longer than a menu for cooking ordinary white rice or the like. As a result, when the “brown rice course” is selected, the pot 2 and the lid heating plate 8 are sufficiently heated in the initial stage of the steaming process even when there is no water in the steam generation unit 8. Yes, the temperature of the space of the steam generating unit 9 is also higher than that of a menu for cooking ordinary white rice or the like, and is in the vicinity of 90 ° C.

したがって、炊飯メニュー選択手段28により「玄米コース」が選択された場合には、所定の温度T1を一般の白米等を炊飯するメニューと比較して高く(例えば95℃)設定することにより、炊飯メニューによる水有無検知の誤検知をなくし、水有無検知の精度を向上し、信頼性を向上させることができる。   Therefore, when the “brown rice course” is selected by the rice cooking menu selection means 28, the rice cooking menu is set by setting the predetermined temperature T1 higher (for example, 95 ° C.) than the menu for cooking ordinary white rice or the like. This eliminates false detection of water presence / absence detection, improves the accuracy of water presence / absence detection, and improves reliability.

以上のように、蒸らし工程開始時、蓋サーミスタ検知温度により、水の有無を判断することにより、蓋加熱手段13により蓋加熱板8を加熱することなく、水が無い場合に適した炊飯プログラムを動作させることにより、蓋加熱板8の温度上昇による鍋2内上層の飯の乾燥をさらに低減し、食味を向上させるとともに、蓋加熱板8に隣接する蓋カバー12、蓋加熱手段13である蓋コイルの過度の温度上昇をさらに抑制し、変形や故障の恐れを防止することができる。   As described above, at the start of the steaming process, by determining the presence or absence of water based on the lid thermistor detection temperature, the lid heating unit 13 does not heat the lid heating plate 8 and the rice cooking program suitable for the case where there is no water is provided. By operating, the drying of the upper layer rice in the pan 2 due to the temperature rise of the lid heating plate 8 is further reduced, the taste is improved, and the lid cover 12 adjacent to the lid heating plate 8 and the lid that is the lid heating means 13 The excessive temperature rise of the coil can be further suppressed, and the risk of deformation or failure can be prevented.

また、凸部10とコンタクト22の間に異物が存在し、蓋サーミスタ18の検知温度が異物の無い状態に比べて低くなる場合など、温度検知手段による検知温度が異常により低くなる場合においても、水が無いと判断することができ、異常時においても、信頼性を向上させることができる。   Further, even when foreign matter exists between the convex portion 10 and the contact 22 and the detection temperature of the lid thermistor 18 is lower than that without foreign matter, such as when the detection temperature by the temperature detection means is abnormally low, It can be determined that there is no water, and the reliability can be improved even in an abnormality.

また、図7はLCD29からなる報知手段30を設けた場合を示す。このLCD29は炊飯残時間などの炊飯に関する情報の表示機能も兼ねている。   FIG. 7 shows a case where a notification means 30 comprising an LCD 29 is provided. The LCD 29 also has a function of displaying information related to rice cooking such as the remaining rice cooking time.

炊飯途中で水無しと検知した場合には、LCD29により「給水タンク水不足」という表示を点灯させることで、使用者が炊飯前に所定量の給水タンク6に水を供給していなかったことを報知し、次回以降の炊飯では事前に給水タンク6に所定量の水を入れることを促すことができる。   When it is detected that there is no water in the middle of cooking rice, the LCD 29 turns on the display “Water tank shortage” to notify that the user has not supplied a predetermined amount of water to the water tank 6 before cooking. And in the next cooking rice cooking, it can be urged to put a predetermined amount of water into the water supply tank 6 in advance.

これにより、炊飯前に所定量の水を給水タンク6に入れない機会を低減することができる。   Thereby, the opportunity not to put a predetermined amount of water into the water supply tank 6 before cooking rice can be reduced.

なお、報知手段30は、他の言葉や絵などを使用して表示しても良いし、音や、音声、光など他の手段や、点滅など他の方法でも水の不足を報知できればよい。   Note that the notification means 30 may be displayed using other words, pictures, or the like, and it is only necessary that the shortage of water can be notified by other means such as sound, voice, light, or other methods such as blinking.

また、報知手段30は、炊飯に関する情報の表示手段とは別に、独立して設けてもよいし、何らかの表示手段と一体でもよい。   Moreover, the alerting | reporting means 30 may be provided independently separately from the display means of the information regarding rice cooking, and may be integrated with some display means.

さらに、炊飯途中の水有無検知工程において、水無しという報知は炊飯が終了してから行うと、使用者が炊飯中に「給水タンク水不足」の表示に気がつき、給水しようとして蓋3を開放し、鍋2内の蒸気が炊飯器本体1外に漏れ出すことを低減することができるのでよい。   Furthermore, in the water presence / absence detection process during cooking, when the notification that there is no water is made after cooking is completed, the user notices the display of “water tank shortage” during cooking, opens the lid 3 to try to supply water, It is possible to reduce the leakage of steam in the pan 2 to the outside of the rice cooker body 1.

また、炊飯途中に水無しと判定すると水がない場合の炊飯プログラムで炊飯を行う場合には、炊飯途中で使用者が給水しても蒸気を発生させないので、炊飯途中に使用者が無駄に給水することを低減することができる。   In addition, if it is determined that there is no water in the middle of cooking rice, when cooking with the rice cooking program when there is no water, steam will not be generated even if the user supplies water during cooking, so the user wastefully supplies water during cooking Can be reduced.

(実施の形態2)
図8は実施の形態2を示し、図1と同起用を行う構成には同一符号を付し、その具体的説明は実施の形態1のものを援用する。
(Embodiment 2)
FIG. 8 shows the second embodiment, and the same reference numerals are given to the same components as those in FIG. 1, and the specific description thereof is the same as that of the first embodiment.

まず、炊飯を行う米とその米量に対応する水を鍋2に入れ、本体1の所定の状態に内装する。さらに給水タンク6内に所定量の水を入れ本体1にセットし、炊飯開始スイッチ(図示せず)を使用者が操作すると、所定のプログラムにしたがってポンプ7を駆動し、給水タンク6に入れた水を蒸気発生部9に貯留させるとともに、炊飯工程が実施される。   First, the rice which cooks rice and the water corresponding to the amount of the rice are put in the pan 2, and the main body 1 is decorated in a predetermined state. Further, a predetermined amount of water is put in the water supply tank 6 and set in the main body 1, and when the user operates a rice cooking start switch (not shown), the pump 7 is driven according to a predetermined program and is put in the water supply tank 6. While storing water in the steam generation part 9, a rice cooking process is implemented.

炊飯工程は、浸水、炊き上げ、蒸らしの各工程で進行していき、鍋2内の米と水の状態が適正値として設定された温度や時間、加熱量で制御される。   A rice cooking process advances in each process of soaking, cooking, and steaming, and the state of the rice and water in the pan 2 is controlled by the temperature, time, and heating amount which were set as an appropriate value.

ここで、炊飯量判定手段31は、炊き上げ工程において、鍋温度検知手段5より検知された鍋温度の単位時間当たりの変化に基づいて、米飯の炊飯量を判定するよう構成されている。   Here, the cooked rice amount determining means 31 is configured to determine the cooked rice amount of the cooked rice based on the change per unit time of the pot temperature detected by the pot temperature detecting means 5 in the cooking process.

より具体的には、炊飯量判定手段31は、予め設定した加熱パワーで一定時間、加熱された鍋2の温度上昇率を算出することにより、米の炊飯量が予め設定された量以上であるかどうかを判定するよう構成されている。   More specifically, the rice cooking amount determination means 31 calculates the temperature increase rate of the pot 2 heated for a certain period of time with a preset heating power, so that the rice cooking amount of rice is equal to or greater than a preset amount. It is configured to determine whether or not.

炊飯量判定後の各工程における温度や時間、加熱量は各炊飯量に応じて異なり、最適な炊飯ができるように設定されている。   The temperature, time, and heating amount in each step after the amount of cooked rice are different depending on the amount of cooked rice, and are set so that optimum rice cooking can be performed.

蒸気発生部9に貯留された水は炊飯中に発生する蒸気の潜熱により同蒸気発生部9を介
して熱交換され、炊き上げ工程後半には、沸騰状態となる。
The water stored in the steam generating unit 9 is heat-exchanged through the steam generating unit 9 due to the latent heat of steam generated during rice cooking, and is brought into a boiling state in the latter half of the cooking process.

蒸らし工程に入ると、まず実施の形態1と同様に水有無検知工程が実施され、水が有ると判断すると、蓋加熱手段13により蓋加熱板8は加熱され、沸騰状態にある水の一部が直ちに蒸発し蒸気を出す。   When entering the steaming step, first, the water presence / absence detection step is carried out in the same manner as in the first embodiment. When it is determined that there is water, the lid heating plate 8 is heated by the lid heating means 13 and a part of the water in the boiling state is obtained. Immediately evaporates and gives off steam.

この蒸気が蒸気加熱部27を通過する間に前記蓋加熱板13より加熱され100℃以上の過熱蒸気となり、蒸気噴出口11より鍋2内に放出される。   While this steam passes through the steam heating unit 27, it is heated by the lid heating plate 13 to become superheated steam of 100 ° C. or higher, and is discharged from the steam outlet 11 into the pan 2.

これにより、鍋2全体の加熱の局部的な温度上昇と上面とその近傍の米の乾燥を防止しつつ、鍋2内の底部の残留水分を除去することと米の糊化を促進させることができ、おいしい飯を炊き上げることができる。   Thereby, removing the residual water | moisture content of the bottom part in the pan 2, and accelerating the gelatinization of rice, preventing the local temperature rise of the heating of the whole pan 2, and drying of the rice of the upper surface and its vicinity. Yes, you can cook delicious rice.

蒸気発生部9に水が有る場合は、蒸気発生部を2分する凸部10も水近傍に位置するため凸部10の温度も水の温度とほぼ同様になっており、凸部10に当接する温度検知手段17により水の温度を検知することができる。   When water is present in the steam generating part 9, the convex part 10 that bisects the steam generating part is also located in the vicinity of the water, so that the temperature of the convex part 10 is substantially the same as the temperature of the water. The temperature of the water can be detected by the temperature detecting means 17 in contact therewith.

したがって、鍋2内に蒸気を投入する直前に蒸気発生部9の水の温度が適温(例えば、96℃)温度になるように、温度検知手段17によって、蒸気発生部9に貯溜された水の温度を制御することにより、炊飯中の所定の適確なタイミングで過熱蒸気を鍋2内に投入することができる。   Therefore, the water stored in the steam generating unit 9 by the temperature detecting means 17 is set so that the temperature of the water in the steam generating unit 9 becomes an appropriate temperature (for example, 96 ° C.) immediately before the steam is introduced into the pan 2. By controlling the temperature, superheated steam can be introduced into the pan 2 at a predetermined and accurate timing during cooking.

ここで、蒸気発生部9の水の温度は、炊飯量判定手段31により判定された炊飯量毎に最適な温度になるように制御されることは言うまでも無い。   Here, it goes without saying that the temperature of the water in the steam generating unit 9 is controlled so as to be an optimum temperature for each amount of cooked rice determined by the rice cooking amount determination means 31.

水有無検知工程については、実施の形態1と同様の工程により実施されるが、蒸らし工程開始時の所定の温度T1は、炊飯量判定手段31により選択された炊飯量に応じて可変される。例えば、最大炊飯量が10合であり、炊飯量が2合以下の場合には、鍋内の温度上昇が早く、蒸らし工程開始時における蒸気発生部9の温度は5合炊飯時と比較してより高温に上昇している(例えば90℃)。   The water presence / absence detection step is performed in the same manner as in the first embodiment, but the predetermined temperature T1 at the start of the steaming step is varied according to the amount of rice cooked selected by the rice cooking amount determination means 31. For example, when the maximum amount of cooked rice is 10 go and the amount of cooked rice is 2 go or less, the temperature rise in the pan is quick, and the temperature of the steam generating unit 9 at the start of the steaming process is compared to that at the time of 5 go cooked rice The temperature has risen to a higher temperature (for example, 90 ° C.).

したがって、炊飯量判定手段31により炊飯量を2合以下と判定された場合には、所定の温度T1を5合炊飯時と比較して高く(例えば95℃)することにより、より精度の高い水有無検知を行うことができる。   Therefore, when the amount of cooked rice is determined to be 2 go or less by the cooked rice determination means 31, water with higher accuracy can be obtained by increasing the predetermined temperature T1 (for example, 95 ° C.) compared to the time of 5 go cooked rice. Presence detection can be performed.

また炊飯量が8合以上の場合には、鍋内の温度上昇が遅く、蒸らし工程開始時における蒸気発生部9の温度は5合炊飯時と比較して低い(例えば77℃)。   Moreover, when the amount of cooked rice is 8 go or more, the temperature rise in the pan is slow, and the temperature of the steam generating unit 9 at the start of the steaming process is lower than that for 5 go cooked rice (for example, 77 ° C.).

したがって、炊飯量判定手段31により炊飯量を8合以上と判定された場合には、所定の温度T1を5合炊飯時と比較して低く(例えば85℃)することにより、より精度の高い水有無検知を行うことができる。   Therefore, when the amount of cooked rice is determined to be 8 go or more by the cooked rice amount judging means 31, water with higher accuracy can be obtained by lowering the predetermined temperature T1 (for example, 85 ° C.) compared to the time of 5 go cooked rice. Presence detection can be performed.

以上において、炊飯量の区分は2合以下、8合以上に限られること無く、また、最大炊飯量が異なる場合においても、自由に設定できることは言うまでも無い。   In the above, the classification of the amount of rice cooking is not limited to 2 go or less, 8 go or more, and it goes without saying that it can be freely set even when the maximum cooked rice amount is different.

以上のように、蒸らし工程開始時、蓋サーミスタ検知温度により、水の有無を判断することにより、蓋加熱手段13により蓋加熱板29を加熱することなく、水が無い場合に適した炊飯プログラムを動作させることにより、蓋加熱板8の温度上昇による鍋2内上層の飯の乾燥をさらに低減し、食味を向上させるとともに、蓋加熱板8に隣接する蓋カバー12、蓋加熱手段13である蓋コイルの過度の温度上昇をさらに抑制し、変形や故障の恐れ
を防止することができる。
As described above, at the start of the steaming process, by determining the presence or absence of water from the lid thermistor detection temperature, the lid heating plate 29 is not heated by the lid heating means 13, and the rice cooking program suitable for the case where there is no water is provided. By operating, the drying of the upper layer rice in the pan 2 due to the temperature rise of the lid heating plate 8 is further reduced, the taste is improved, and the lid cover 12 adjacent to the lid heating plate 8 and the lid that is the lid heating means 13 The excessive temperature rise of the coil can be further suppressed, and the risk of deformation or failure can be prevented.

また、凸部10とコンタクト22の間に異物が存在し、蓋サーミスタ18の検知温度が異物の無い状態に比べて低くなる場合など、温度検知手段による検知温度が異常により低くなる場合においても、水が無いと判断することができ、異常時においても、信頼性を向上させることができる。   Further, even when foreign matter exists between the convex portion 10 and the contact 22 and the detection temperature of the lid thermistor 18 is lower than that without foreign matter, such as when the detection temperature by the temperature detection means is abnormally low, It can be determined that there is no water, and the reliability can be improved even in an abnormality.

以上のように、本発明にかかる炊飯器は、機器の設置製を維持しつつ、飯を乾燥させること無く米澱粉の糊化を促進し美味なる飯を得るとともに、蓋内部の温度上昇による変形や故障の恐れを防止することができるので、業務用炊飯器や他の熱機器にも適用できる。   As described above, the rice cooker according to the present invention promotes gelatinization of rice starch without drying the rice while maintaining the installation of the equipment, and obtains a delicious rice, and is deformed due to the temperature rise inside the lid. It can be applied to commercial rice cookers and other thermal equipment.

本発明の実施の形態1における炊飯器の断面図Sectional drawing of the rice cooker in Embodiment 1 of this invention. 同炊飯器における蓋加熱板の一部斜視図Partial perspective view of the lid heating plate in the rice cooker 同炊飯器における温度検知手段の断面図Sectional view of temperature detection means in the rice cooker 同炊飯器における蓋加熱手段の平面図Top view of lid heating means in the rice cooker 同炊飯器における水有無検知工程を示す工程図Process chart showing the water presence / absence detection process in the rice cooker 同炊飯器における水有無検知工程を示すフローチャートThe flowchart which shows the water presence or absence detection process in the rice cooker 同炊飯器における表示部の平面図Plan view of the display unit in the rice cooker 本発明の実施の形態2における炊飯器の断面図Sectional drawing of the rice cooker in Embodiment 2 of this invention. 従来の炊飯器の断面図Cross section of conventional rice cooker

符号の説明Explanation of symbols

2 鍋
3 蓋
4 鍋加熱手段
8 蓋加熱板
9 蒸気発生部
13 蓋加熱手段
17 温度検知手段
27 蒸気加熱部
2 pan 3 lid 4 pan heating means 8 lid heating plate 9 steam generating part 13 lid heating means 17 temperature detection means 27 steam heating part

Claims (2)

炊飯器本体の内部に収納される鍋と、前記鍋を加熱する鍋加熱手段と、前記鍋の開口部を覆う開閉自在な蓋と、前記鍋内を上方から加熱する蓋加熱板と、前記蓋加熱板を加熱する蓋加熱手段と、前記蓋加熱板に貯えた水を蒸気に生成する蒸気発生部と、前記生成した蒸気を加熱する蒸気加熱部と、前記蓋加熱板に貯えられた水の有無を検知する水有無検知手段と、炊飯メニューを選択するメニュー選択手段とを備え、前記水有無検知手段は、温度検知手段により検知された温度が所定の温度以下の場合に水が無いと判断するように構成され、前記所定の温度は前記メニュー選択手段により選択された炊飯メニューに応じて可変され、前記水有無検知手段が前記蓋加熱板に貯えられた水の有無を検知した情報を基に、水が有る場合と水が無い場合、それぞれの炊飯プログラムを有することを特徴とする炊飯器。 A pan housed inside the rice cooker body, a pan heating means for heating the pan, an openable / closable lid for covering the opening of the pan, a lid heating plate for heating the inside of the pan from above, and the lid Lid heating means for heating the heating plate, a steam generating unit for generating water stored in the lid heating plate into steam, a steam heating unit for heating the generated steam, and water stored in the lid heating plate Water presence / absence detection means for detecting presence / absence and menu selection means for selecting a rice cooking menu, wherein the water presence / absence detection means determines that there is no water when the temperature detected by the temperature detection means is equal to or lower than a predetermined temperature. The predetermined temperature is varied according to the rice cooking menu selected by the menu selection means, and the water presence / absence detection means is based on information on the presence / absence of water stored in the lid heating plate. Where there is water and where there is no water , Rice cookers and having a respective cooking program. 炊飯器本体の内部に収納される鍋と、前記鍋を加熱する鍋加熱手段と、前記鍋の開口部を覆う開閉自在な蓋と、前記鍋内を上方から加熱する蓋加熱板と、前記蓋加熱板を加熱する蓋加熱手段と、前記蓋加熱板に貯えた水を蒸気に生成する蒸気発生部と、前記生成した蒸気を加熱する蒸気加熱部と、前記蓋加熱板に貯えられた水の有無を検知する水有無検知手段と、炊飯中の米の炊飯量を判定する炊飯量判定手段とを備え、前記水有無検知手段は、温度検知手段により検知された温度が所定の温度以下の場合に水が無いと判断するように構成され、前記所定の温度は前記炊飯量判定手段により判定された炊飯量に応じて可変され、前記水有無検知手段が前記蓋加熱板に貯えられた水の有無を検知した情報を基に、水が有る場合と水が無い場合それぞれの炊飯プログラムを有することを特徴とする炊飯器。 A pan housed inside the rice cooker body, a pan heating means for heating the pan, an openable / closable lid for covering the opening of the pan, a lid heating plate for heating the inside of the pan from above, and the lid Lid heating means for heating the heating plate, a steam generating unit for generating water stored in the lid heating plate into steam, a steam heating unit for heating the generated steam, and water stored in the lid heating plate Water presence / absence detection means for detecting presence / absence and rice cooking amount determination means for determining the amount of rice being cooked during cooking, the water presence / absence detection means, when the temperature detected by the temperature detection means is below a predetermined temperature The predetermined temperature is varied in accordance with the amount of cooked rice determined by the rice cooking amount determining means, and the water presence / absence detecting means is stored in the lid heating plate. Based on the presence / absence detection information, there is water and no water. Cooker, characterized in that it comprises a respective of cooking programs.
JP2008302083A 2008-11-27 2008-11-27 Rice cooker Pending JP2010125027A (en)

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109259579A (en) * 2018-09-10 2019-01-25 华帝股份有限公司 Electric steam box control method and electric steam box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109259579A (en) * 2018-09-10 2019-01-25 华帝股份有限公司 Electric steam box control method and electric steam box

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