JP2013039296A - Pressure-type rice cooker - Google Patents

Pressure-type rice cooker Download PDF

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JP2013039296A
JP2013039296A JP2011179379A JP2011179379A JP2013039296A JP 2013039296 A JP2013039296 A JP 2013039296A JP 2011179379 A JP2011179379 A JP 2011179379A JP 2011179379 A JP2011179379 A JP 2011179379A JP 2013039296 A JP2013039296 A JP 2013039296A
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rice
pressure
cooking
inner pot
lid
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JP5811685B2 (en
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Mayako Maeda
真矢子 前田
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Tiger Vacuum Bottle Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a pressure-type rice cooker having a pressurization rice-cooking function which does not spoil the taste of rice and prevents steam and/or sticky broth from spouting out when venting pressure.SOLUTION: The rice cooker includes: a rice cooker body which stores an inner pan; a lid; a heating means for heating the inner pan; a control means for controlling the heating means; and a pressure adjusting device for adjusting the pressure in the inner pan. In the rice cooker, the inner pan is maintained under a pressurized state from the start of rice cooking to a re-heating process after finishing the rice cooking, and the temperature inside the inner pan is lowered stepwise in the re-heating process.

Description

本発明は、特に加圧炊飯機能を有する圧力式炊飯器に関するものである。   The present invention particularly relates to a pressure rice cooker having a pressure rice cooking function.

一般に炊飯器は、ワークコイル、保温ヒータ及び蓋ヒータ等の複数個の加熱手段を有し、これら加熱手段を駆使して自動的に炊飯及び保温を行いユーザーに最適なご飯等を提供する器具として広く知られている。   Generally, a rice cooker has a plurality of heating means such as a work coil, a heat retaining heater, and a lid heater, and automatically cooks and heats using these heating means to provide the user with optimal rice and the like. Widely known.

また、炊飯器は、一般にお米に充分な水を吸水させるための吸水工程、火力をあげてお米と水を沸騰させるための昇温工程、沸騰を維持するための沸騰維持工程、その後の追い炊き工程及びむらし工程とを有する炊飯工程と、保温工程を備え、各工程で、ワークコイル、蓋ヒータ及び保温ヒータ等の複数個の加熱手段が、内鍋の温度等を検知する温度センサの検出信号に基づいて加熱制御され、最適な炊飯及び保温が行われる。   In addition, the rice cooker generally has a water absorption process for absorbing sufficient water into the rice, a temperature rising process for boiling the rice and water by increasing the thermal power, a boiling maintenance process for maintaining boiling, A temperature sensor that includes a rice cooking process having an additional cooking process and an unevenness process, and a heat retaining process, and in each process, a plurality of heating means such as a work coil, a lid heater, and a heat retaining heater detect the temperature of the inner pot, etc. The heating control is performed based on the detection signal, and optimal rice cooking and heat insulation are performed.

ところで、炊飯の各工程時に内鍋内を加圧状態にして炊飯を行い、炊きムラのないより美味しいご飯を短時間で炊き上げることができる加圧炊飯機能を有する圧力式炊飯器が既に販売されている。   By the way, pressure-type rice cookers having a pressure rice cooking function that can cook rice in a pressurized state during each step of rice cooking in a short time and cook more delicious rice without uneven cooking have already been sold. ing.

圧力式炊飯器は、基本的には通常の炊飯器とほぼ同じである。即ち、圧力式炊飯器は、強度が高められた構造の炊飯器本体及び炊飯器本体の上方開口を開閉する蓋体等からなり、前記炊飯器本体内の内ケースには、調理物を入れて調理する内鍋がセットされ、内ケースの底面等に設けられるワークコイル、保温ヒータ等の加熱手段により内鍋内の調理物が加熱調理される。   A pressure rice cooker is basically the same as a normal rice cooker. That is, the pressure rice cooker is composed of a rice cooker body having a structure with increased strength and a lid that opens and closes the upper opening of the rice cooker body, and the inner case inside the rice cooker body contains a cooked food. The inner pot to be cooked is set, and the food in the inner pot is cooked by heating means such as a work coil and a heat retaining heater provided on the bottom surface of the inner case.

そして、多くの場合、蓋体内に内鍋内の圧力を調圧するための圧力調整装置が設けられ、加圧炊飯時、圧力調整装置を作動させ内鍋内を密閉状態にして所定圧力での加圧炊飯が行われることになる(例えば、特許文献1参照)。   In many cases, a pressure adjusting device for adjusting the pressure in the inner pot is provided in the lid, and during pressure rice cooking, the pressure adjusting device is operated to seal the inner pot and apply pressure at a predetermined pressure. Pressure cooking rice will be performed (for example, refer to patent documents 1).

ところで、圧力式炊飯器で加圧炊飯を行う場合、炊飯開始から炊き上げ後の追い炊き工程まで圧力調整装置をオンして内鍋内を加圧状態にし、追い炊き工程からむらし工程に移行する時に圧力を抜いてむらしを行うと、お米を早く柔らかく炊くことができるようになる。   By the way, when performing pressure rice cooking with a pressure rice cooker, the pressure adjustment device is turned on from the start of rice cooking to the additional cooking process after cooking, the inside of the pan is pressurized, and the process shifts from the additional cooking process to the uneven process If you remove the pressure when you do it, you can cook rice quickly and softly.

また、圧力式炊飯器での炊飯をより早く行いたいとの要望があり、このような要望に答えるため、加圧炊飯工程に、吸水工程を省略したり、或いは、各工程時間を短くした早炊きコースが考えられている。   In addition, there is a demand to cook rice with a pressure rice cooker earlier, and in order to respond to such a demand, the water-absorbing process is omitted in the pressurized rice cooking process or each process time is shortened. Cooking course is considered.

ところが、加圧炊飯で早炊きを行うような場合、お米を早く炊くことができる反面、追い炊き工程からむらし工程に移行する時の圧力を抜く時までの時間も短くなるため、例えば図5の2点鎖線(従来例)で示すように、追い炊き工程からむらし工程に移行する時に内鍋内の圧力が十分に下がらない状態(1気圧近傍より高い状態)が生じる恐れがある。   However, if you cook quickly with pressurized rice, you can cook rice quickly, but on the other hand, the time until the pressure is removed when shifting from the follow-up cooking process to the unevenness process is shortened. As shown by a two-dot chain line (conventional example) of No. 5, there is a possibility that a state in which the pressure in the inner pot is not sufficiently lowered (a state higher than the vicinity of 1 atm) is caused when shifting from the additional cooking step to the unevenness step.

そして、そのような状態で圧力調整装置をオフして圧抜きを行うと、内鍋内の圧力の高い蒸気やおねばが急激に噴出し、蓋体内の蒸気通路がおねばで詰まったり、或いは蒸気口から蒸気やおねばが外部に急激に噴出し、ユーザー等に弊害を与える怒れが生じる。   And in such a state, when the pressure regulator is turned off and depressurization, the steam or rice bowl with high pressure in the inner pot suddenly erupts, and the steam passage in the lid is clogged with rice cake, or Steam or rice balls are suddenly ejected from the steam outlet to the outside, causing anger that is harmful to the user.

なお、このような弊害が生じないように、追い炊き工程で加熱せずに追い炊き工程を短時間で終わらせることが考えられるが、追い炊き工程で加熱しないと加熱不足で食味が落ち、美味しいお米を炊くことができなくなる。   In order to prevent such adverse effects, it may be possible to finish the additional cooking process in a short time without heating in the additional cooking process. It becomes impossible to cook rice.

特開2006−325843号公報JP 2006-325843 A

本発明の目的は、食味を損なわず、且つ圧抜き時に蒸気やおねばが噴出しない加圧炊飯機能を有する圧力式炊飯器を提供することである。   The objective of this invention is providing the pressure type rice cooker which has a pressurized rice cooking function which does not spoil a taste and does not spout a vapor | steam and rice cake at the time of pressure release.

前記目的を達成するため、本発明は以下の構成を採用する。   In order to achieve the above object, the present invention adopts the following configuration.

請求項1に係る発明では、内鍋を収納する炊飯器本体と、蓋体と、前記内鍋を加熱する加熱手段と、前記加熱手段を制御する制御手段と、前記内鍋内の圧力を調整する圧力調整装置とを有する炊飯器において、炊飯開始から炊き上げ後の追い炊き工程まで前記内鍋内を加圧状態にし、前記追い炊き工程では、前記内鍋内の温度を段階的に低下させる構成。   In the invention which concerns on Claim 1, the rice cooker main body which accommodates an inner pot, a cover body, the heating means which heats the said inner pot, the control means which controls the said heating means, and the pressure in the said inner pot are adjusted. In the rice cooker having a pressure adjusting device, the inner pot is pressurized from the start of rice cooking to the additional cooking process after cooking, and in the additional cooking process, the temperature in the inner pot is lowered stepwise. Constitution.

請求項2に係る発明では、請求項1の構成に加え、前記内鍋内の段階的な温度低下は、合数が多い程長い所定時間の間で行われる構成。なお、所定時間は、予め決められた時間であり、追い炊き工程の実行時間である。   In the invention according to claim 2, in addition to the structure of claim 1, the stepwise temperature decrease in the inner pot is performed for a longer predetermined time as the total number is larger. Note that the predetermined time is a predetermined time and is an execution time of the additional cooking process.

請求項1に係る発明は、炊飯開始から炊き上げ後の追い炊き工程まで内鍋内を加圧状態にし、追い炊き工程では、内鍋内の温度を段階的に低下させることにより、食味を損なうことがないとともに、圧抜き時に高圧の蒸気やおねばの噴出を防止することができる。その結果、加圧炊飯での圧抜きを安全に行うことができるとともに、加圧炊飯での早炊きをより短時間で且つ適確に行うことができる。   The invention according to claim 1 impairs the taste by bringing the inside of the inner pot into a pressurized state from the start of rice cooking until the additional cooking process after cooking, and in the additional cooking process, gradually lowering the temperature in the inner pot. In addition, it is possible to prevent ejection of high-pressure steam or rice balls during pressure relief. As a result, it is possible to perform depressurization with pressurized rice safely and to perform quick cooking with pressurized rice in a shorter time and more accurately.

なお、追い炊き工程終了時の所定最低温度は、後記実施例では105℃に設定しているが、できるだけ100℃近傍まで下げるようにするとよい。このような段階的温度制御をすることにより、追い炊き工程終了までに内鍋内の圧力を1.0気圧近傍にまで減圧することができる。   In addition, although the predetermined minimum temperature at the end of the additional cooking step is set to 105 ° C. in the examples described later, it is preferable that the predetermined minimum temperature be lowered to around 100 ° C. as much as possible. By performing such stepwise temperature control, the pressure in the inner pot can be reduced to around 1.0 atm by the end of the additional cooking process.

請求項2に係る発明では、内鍋内の段階的な温度低下を、予め設定した所定時間の間で行うことにより、食味を落とすことなく追い炊き工程の実行時間をできるだけ短くすることができるとともに、合数に関係なく食味を落とさず安全な圧抜きを行うことができる。   In the invention which concerns on Claim 2, while performing the stepwise temperature fall in an inner pot during the predetermined time set beforehand, while performing the follow-up cooking process without reducing taste, it can be shortened as much as possible. , Regardless of the total number, it is possible to perform safe depressurization without sacrificing the taste.

圧力式炊飯器の蓋上部材を取り外した状態の全体断面図Whole cross-sectional view of the pressure rice cooker with the top lid member removed 操作パネルの正面図Front view of the operation panel 圧力式炊飯器の制御手段のシステムブロック図System block diagram of control means of pressure rice cooker 圧力調整装置のオンオフ状態を示す概略図Schematic showing the on / off state of the pressure regulator 圧力式炊飯器での早炊きタイムチャート図Quick-cooking time chart with pressure cooker 圧力式炊飯器での早炊きフローチャート図Quick-cooking flowchart for pressure cooker 合数に応じた温度降下線図Temperature drop diagram according to the total number

図1は蓋上部材を取り外した状態の全体断面図を示し、図2は操作パネルの正面図を示し、図3は制御手段のシステムブロック図を示し、図4は圧力調整装置のオンオフ状態概略図を示し、図5、6は制御手段のタイムチャート図、フローチャート図を示す。   FIG. 1 is an overall cross-sectional view of a state in which a lid upper member is removed, FIG. 2 is a front view of an operation panel, FIG. 3 is a system block diagram of a control means, and FIG. 5 and 6 show a time chart and a flowchart of the control means.

圧力式炊飯器20の略全体断面図を図1に示す。圧力式炊飯器20は、炊飯器本体21及び蓋体40からなる。炊飯器本体21は、鋼板ケースまたは合成樹脂製の外ケース22を有し、この外ケース22の内部には、金属鍋或いは土鍋等の内鍋23が着脱自在にセットされ、この内鍋23の外側には内鍋23の形状に沿った形状を有する保護枠である内ケース24が設けられる。   A substantially whole sectional view of the pressure rice cooker 20 is shown in FIG. The pressure rice cooker 20 includes a rice cooker body 21 and a lid 40. The rice cooker main body 21 has an outer case 22 made of a steel plate case or a synthetic resin, and an inner pan 23 such as a metal pan or an earthen pan is detachably set in the outer case 22. An outer case 24 that is a protective frame having a shape along the shape of the inner pot 23 is provided on the outer side.

この内ケース24は、例えばポリエチレンテレフタレート等の耐熱性の合成樹脂製のもので、その底部中央にはサーミスタからなる温度センサであるセンターセンサ25を臨ませるためのセンサ挿入孔24aが設けられる。   The inner case 24 is made of a heat-resistant synthetic resin such as polyethylene terephthalate, for example, and a sensor insertion hole 24a is provided at the center of the bottom portion for allowing the center sensor 25, which is a temperature sensor made of a thermistor, to face.

内ケース24の上端は、外ケース22の上端と肩部材26を介して一体に結合される。内ケース24の底部外面及び底部から側部にかけての湾曲部外面には、内鍋23を誘導加熱する加熱手段である底部ワークコイル27及び側部ワークコイル28が設けられる。   The upper end of the inner case 24 is integrally coupled to the upper end of the outer case 22 via the shoulder member 26. A bottom work coil 27 and a side work coil 28 which are heating means for induction heating the inner pot 23 are provided on the bottom outer surface of the inner case 24 and the curved outer surface from the bottom to the side.

これら底部ワークコイル27及び側部ワークコイル28は、内ケース24の底部及び湾曲部の各位置に、内ケース24の底部中央を中心として同心円状に設けられる。また、内ケース24の側部上方には、保温ヒータ30が設けられ、炊飯工程及び保温工程時に内鍋23を側面から加熱する。   The bottom work coil 27 and the side work coil 28 are provided concentrically around the center of the bottom of the inner case 24 at each position of the bottom and curved portions of the inner case 24. Moreover, the heat retention heater 30 is provided above the side part of the inner case 24, and heats the inner pot 23 from a side surface at the time of a rice cooking process and a heat retention process.

これら底部ワークコイル27及び側部ワークコイル28の外側には合成樹脂製のコイル支持台29が設けられており、このコイル支持台29をネジ等で内ケース24に取り付けることにより、底部ワークコイル27及び側部ワークコイル28は図示する所定位置に位置決め固定される。   A coil support base 29 made of synthetic resin is provided outside the bottom work coil 27 and the side work coil 28. By attaching the coil support base 29 to the inner case 24 with screws or the like, the bottom work coil 27 is provided. The side work coil 28 is positioned and fixed at a predetermined position shown in the figure.

前記外ケース22の下端部には、底部材31がビス等で取り付けられ、外ケース22と底部材31とで上方に開口を有する容器状部材を形成する。外ケース22の後方の内部には、肩部材26から垂下する形態で、制御基板32が設けられる。   A bottom member 31 is attached to the lower end portion of the outer case 22 with a screw or the like, and the outer case 22 and the bottom member 31 form a container-like member having an opening upward. A control board 32 is provided inside the rear of the outer case 22 so as to hang from the shoulder member 26.

この制御基板32には、底部ワークコイル27、側部ワークコイル28、保温ヒータ30及び蓋ヒータ61からなる加熱手段を制御するためのマイコン及び電源回路等の電気部品が搭載される。それら電気部品のなかには発熱するものがあるため、制御基板32の近傍には発熱素子等を冷却するための冷却フィン33と、冷却フィン33の熱を放熱するための冷却ファン34が設けられる。なお、制御基板32の後方側にはコード巻取器35が設けられる。   On the control board 32, electric parts such as a microcomputer and a power supply circuit for controlling heating means including the bottom work coil 27, the side work coil 28, the heat retaining heater 30 and the lid heater 61 are mounted. Since some of these electrical components generate heat, a cooling fin 33 for cooling the heating elements and the like and a cooling fan 34 for radiating heat from the cooling fin 33 are provided in the vicinity of the control board 32. A cord winder 35 is provided on the rear side of the control board 32.

蓋体40は、図示しない外周面を形成する樹脂製の蓋上部材と、蓋下部材42を有する。蓋下部材42は、蓋上部材と同様に樹脂製の部材であり、その後方側に肩部材26に取付けられるヒンジ軸43により開閉自在に取付けられている。   The lid body 40 includes a resin lid upper member that forms an outer peripheral surface (not shown) and a lid lower member 42. The lower lid member 42 is a resin member similar to the upper lid member, and is attached to the rear side thereof by a hinge shaft 43 attached to the shoulder member 26 so as to be freely opened and closed.

蓋下部材42の中央且つ後方よりには円形の蒸気排出筒44が設けられており、内鍋23内の蒸気は、この蒸気排出筒44より蓋上部材に設けられる蒸気通路を経て蓋上部材の上面に設けられる蒸気口より外部に放出される。   A circular steam discharge tube 44 is provided at the center and rear of the lower lid member 42, and the steam in the inner pot 23 passes through a steam passage provided in the upper cover member from the steam discharge tube 44. It is discharged to the outside through a steam port provided on the upper surface.

蓋下部材42の前方側には、略L字状でその中央部がレバー軸47に軸支されるロックレバー45が設けられる。このロックレバー45の一方には、蓋上部材に設けられる蓋開放部材48(図2参照)の上下動に連動して上下動し、上動ばね46aを備えた押圧部材46が設けられるとともに、その他方には、肩部材26に設けられる図示しない係止溝に係合する係止片が設けられており、蓋上部材に設けられる蓋開放部材48が下方に押されると押圧部材46が下動し、ロックレバー45をレバー軸47を中心にして時計方向に回動し、ロックレバー45の係止片と肩部材26の係止溝との係合を解除して蓋体40をヒンジ軸43を中心にして時計方向に開放する。   On the front side of the lid lower member 42, there is provided a lock lever 45 which is substantially L-shaped and whose central portion is pivotally supported by the lever shaft 47. One of the lock levers 45 is provided with a pressing member 46 that moves up and down in conjunction with the up and down movement of a lid opening member 48 (see FIG. 2) provided on the lid upper member and includes an upper moving spring 46a. On the other side, a locking piece that engages with a locking groove (not shown) provided on the shoulder member 26 is provided, and when the lid opening member 48 provided on the lid upper member is pushed downward, the pressing member 46 is lowered. The lock lever 45 is pivoted clockwise around the lever shaft 47, and the engagement between the locking piece of the lock lever 45 and the locking groove of the shoulder member 26 is released, and the lid body 40 is moved to the hinge shaft. It opens in the clockwise direction around 43.

蓋下部材42には、圧力調整装置50が設けられる。その概略を図4に示すように、圧力調整装置50は、ソレノイド51、球状弁52、プランジャ53等からなる。ソレノイド51には、突起部54を有するプランジャ53が摺動自在に嵌合されており、ソレノイド51がオフ状態の非作動時には、図4(A)に示すように、コイルばね55により図の右方に付勢されており、図4(B)に示すように、ソレノイド51がオン状態の作動時にはコイルばね55の力に抗して左方に引き込まれる。   The lower lid member 42 is provided with a pressure adjusting device 50. As schematically shown in FIG. 4, the pressure adjusting device 50 includes a solenoid 51, a spherical valve 52, a plunger 53, and the like. A plunger 53 having a projecting portion 54 is slidably fitted to the solenoid 51. When the solenoid 51 is in the non-operating state in the off state, a coil spring 55 as shown in FIG. As shown in FIG. 4B, when the solenoid 51 is in the ON state, it is pulled to the left against the force of the coil spring 55.

また、蓋体40の下部に取り付けられ、内鍋23に対向する内蓋58には、内鍋23内で発生する蒸気を排出するための通気孔56が設けられ、この通気孔56上には通気孔56を閉鎖する形態で球状弁52が設けられる。   The inner lid 58 attached to the lower part of the lid 40 and facing the inner pot 23 is provided with a vent hole 56 for discharging steam generated in the inner pot 23. A spherical valve 52 is provided in a form that closes the vent hole 56.

そして、ソレノイド51がオフ状態の非作動時には、プランジャ53は図4(A)に示す位置にあり、プランジャ53の突起部54は、球状弁52を右方に押し、通気孔56を開放し、ソレノイド51がオン状態の作動時(図1の状態)には、図4(B)に示すようにプランジャ53は左方に引き込まれ、球状弁52は自重で通気孔56上に移動して通気孔56を閉鎖し、内鍋23内を密閉状態にする。   When the solenoid 51 is in the non-actuated state, the plunger 53 is in the position shown in FIG. 4A, and the projection 54 of the plunger 53 pushes the spherical valve 52 to the right, opens the vent hole 56, When the solenoid 51 is in the ON state (the state shown in FIG. 1), the plunger 53 is drawn to the left as shown in FIG. 4B, and the spherical valve 52 is moved over the vent hole 56 by its own weight. The air holes 56 are closed, and the inside of the inner pot 23 is sealed.

炊飯コースが選択されて炊飯が実行されると、通気孔56が閉鎖され、例えば1.2〜1.3気圧での加圧炊飯が行われ、炊飯中に内鍋23内の圧力が球状弁52を押し上げることができる圧、即ち1.2〜1.3気圧になると、球状弁52は押し上げられ通気孔56は開いて所定以上の圧力が大気に開放される。この動作を繰り返すことにより圧力調整装置50は、内鍋23内の圧力を所定圧、即ち1.2〜1.3気圧に調圧する。   When the rice cooking course is selected and the rice cooking is executed, the vent hole 56 is closed, for example, pressurized rice cooking at 1.2 to 1.3 atm is performed, and the pressure in the inner pot 23 is a spherical valve during rice cooking. When the pressure capable of pushing up 52 is reached, that is, 1.2 to 1.3 atm, the spherical valve 52 is pushed up and the vent hole 56 is opened to release a predetermined pressure or more to the atmosphere. By repeating this operation, the pressure adjusting device 50 adjusts the pressure in the inner pot 23 to a predetermined pressure, that is, 1.2 to 1.3 atmospheres.

前記蓋体40の下方には、内鍋23に対向して内蓋58が着脱自在に取付けられる。内蓋58には、上記したようにその略中央には球状弁52によって開閉される通気孔56を有しており、内蓋58が取付けられると、蓋下部材42との間に蒸気室59が形成される。   An inner lid 58 is detachably attached to the lower side of the lid body 40 so as to face the inner pot 23. As described above, the inner lid 58 has a vent hole 56 that is opened and closed by the spherical valve 52 at the substantial center thereof. When the inner lid 58 is attached, the steam chamber 59 is provided between the inner lid 58 and the lower lid member 42. Is formed.

この蒸気室59は、蒸気排出筒44に連通しており、通気孔56が開放されると、内鍋23内の高圧の蒸気及び圧力は、蒸気室59及び蒸気排出筒44を介して外部に放出される。   The steam chamber 59 communicates with the steam discharge cylinder 44, and when the vent hole 56 is opened, the high-pressure steam and pressure in the inner pot 23 are transferred to the outside via the steam chamber 59 and the steam discharge cylinder 44. Released.

また、内蓋58の蒸気室59側の面には、温度センサである蓋センサ60と、内鍋23内を上方から加熱するための蓋ヒータ61が設けられる。蓋センサ60は、主として内鍋23内のお米の沸騰状態を検知するために用いられる。   In addition, on the surface of the inner lid 58 on the steam chamber 59 side, a lid sensor 60 that is a temperature sensor and a lid heater 61 for heating the inside of the inner pot 23 from above are provided. The lid sensor 60 is mainly used for detecting the boiling state of rice in the inner pot 23.

蓋体40の図示しない蓋上部材の前面側(図1の左側)上部には、図2に示すような操作パネル65が設けられる。操作パネル65には、各種の操作スイッチ、例えば、炊飯スイッチ65a、保温スイッチ65b、予約スイッチ65c、メニュースイッチ65d、おこげスイッチ65e、時・分スイッチ65f及び取消スイッチ65gと、それらの各種スイッチ類によって設定される設定状態及び時刻を表示する表示部66とが設けられている。   An operation panel 65 as shown in FIG. 2 is provided on the front side (left side in FIG. 1) of the lid upper member (not shown) of the lid 40. The operation panel 65 includes various operation switches such as a rice cooking switch 65a, a heat retention switch 65b, a reservation switch 65c, a menu switch 65d, a pot switch 65e, an hour / minute switch 65f, a cancel switch 65g, and various switches. A display unit 66 for displaying a set state and time to be set is provided.

そして、メニューには、白米コース、早炊きコース、炊き込みコース等が設けられており、ユーザーがメニュースイッチ65dにより実行するコースを選択し、炊飯スイッチ65aを押すことにより選択したコースが実行される。   The menu includes a white rice course, a quick cooking course, a cooked course, and the like, and the course selected by the user selecting a course to be executed by the menu switch 65d and pressing the rice cooking switch 65a is executed.

次に、制御基板32に搭載される炊飯等を制御する制御手段であるマイコン制御装置100を中心とするワークコイル27、28、保温ヒータ30及び蓋ヒータ61の制御回路部の構成を図3により説明する。   Next, the configuration of the control circuit section of the work coils 27 and 28, the heat retaining heater 30 and the lid heater 61 centering on the microcomputer control device 100 which is a control means for controlling rice cooking etc. mounted on the control board 32 is shown in FIG. explain.

図中、符号70が炊飯・保温制御用のマイコン制御ユニット(CPU)であり、該マイコン制御ユニット70はマイクロコンピュータを中心とし、例えば内鍋23部分の温度検知回路部、ワークコイル駆動制御回路部、発振回路部、リセット回路部、保温ヒータおよび蓋ヒータ等駆動制御回路部、電源回路部、液晶およびLEDランプ等表示部、操作スイッチ部等を各々備えて構成されている。   In the figure, reference numeral 70 denotes a microcomputer control unit (CPU) for rice cooking / heat retention control. The microcomputer control unit 70 is centered on a microcomputer, for example, a temperature detection circuit section of the inner pot 23 portion, a work coil drive control circuit section. , An oscillation circuit unit, a reset circuit unit, a drive control circuit unit such as a heat retaining heater and a lid heater, a power supply circuit unit, a display unit such as a liquid crystal display and an LED lamp, and an operation switch unit.

先ず内鍋23の底壁部に設けられるセンターセンサ25及び蓋センサ60に対応して設けられた温度検知回路71には、センターセンサ25及び蓋センサ60による検知温度信号が入力されるようになっている。   First, the temperature detection circuit 71 provided corresponding to the center sensor 25 and the lid sensor 60 provided on the bottom wall portion of the inner pot 23 is input with a temperature signal detected by the center sensor 25 and the lid sensor 60. ing.

また、前記ワークコイル駆動制御回路部は、例えばパルス幅変調回路72、同期トリガー回路73、IGBT駆動回路74、IGBT75、共振コンデンサ76によって形成されている。そして、前記マイコン制御ユニット70により、前記パルス幅変調回路72を制御することにより、例えば炊飯および保温の各工程に応じて前記ワークコイル27、28の出力値および同出力値でのONデューティー比(例えばn秒/16秒)をそれぞれ適切に変えることによって、同炊飯および保温の各工程における内鍋23の目標加熱温度と加熱パターンを炊飯量を考慮して適切にコントロールし、加熱ムラのないご飯の炊き上げ等を実現するための適切な加熱制御が行われるようになっている。   The work coil drive control circuit unit is formed by, for example, a pulse width modulation circuit 72, a synchronization trigger circuit 73, an IGBT drive circuit 74, an IGBT 75, and a resonance capacitor 76. Then, by controlling the pulse width modulation circuit 72 by the microcomputer control unit 70, the output values of the work coils 27 and 28 and the ON duty ratio at the same output value (for example, according to each step of rice cooking and heat insulation) For example, n seconds / 16 seconds) is appropriately changed to properly control the target heating temperature and heating pattern of the inner pot 23 in each step of cooking rice and keeping the heat in consideration of the amount of rice cooking, so that there is no unevenness in heating. Appropriate heating control for realizing the cooking of the food is performed.

尚、符号Dは前記IGBT75のフライホイールダイオードであり、家庭用AC電源77との間には、ワークコイル駆動用のダイオードブリッジを内蔵した整流回路78及び平滑回路79が配設される。   Reference symbol D denotes a flywheel diode of the IGBT 75, and a rectifier circuit 78 and a smoothing circuit 79 having a built-in diode bridge for driving a work coil are disposed between the IGBT 75 and the household AC power source 77.

符号30は上述の保温ヒータ、61は蓋ヒータであり、保温ヒータ30は保温ヒータ駆動回路80により、蓋ヒータ61は蓋ヒータ駆動回路81により、それぞれ所望の出力とデューティー比でON,OFF駆動されるようになっている。   Reference numeral 30 is the above-described heat retaining heater, 61 is a lid heater, the heat retaining heater 30 is driven by a heat retaining heater driving circuit 80, and the lid heater 61 is driven ON and OFF by a desired output and duty ratio by a lid heater driving circuit 81, respectively. It has become so.

さらに、マイコン制御ユニット70には、液晶、LED等の表示部66、上記した各種操作スイッチ部65a〜65g、ブザー等の報知部82、クロック基準制御信号形成用の発振回路(OSC)83及びリセット回路84が接続される。   Further, the microcomputer control unit 70 includes a display unit 66 such as a liquid crystal display and an LED, the above-described various operation switch units 65a to 65g, a notification unit 82 such as a buzzer, an oscillation circuit (OSC) 83 for forming a clock reference control signal, and a reset. A circuit 84 is connected.

次に上述のマイコン制御ユニット70を使用してなされる加圧炊飯状態での早炊きコースの制御について、図5のタイムチャート及び図6のフローチャートで説明する。   Next, the control of the quick cooking course in the pressurized rice cooking state using the microcomputer control unit 70 will be described with reference to the time chart of FIG. 5 and the flowchart of FIG.

先ず図5のタイムチャートに従って加圧炊飯状態での早炊きコースの各工程の概略について説明する。図5のタイムチャートは、その上部に設定圧力の変化が記載され、その下方に内鍋23内の圧力変化が記載され、その下方に内鍋23の温度変化が記載され、その下方に各工程での概略加熱量、各工程での実行時間、内鍋温度、設定圧力及び圧力調整装置の動作状態が記載される。なお、追い炊き工程及びむらし工程は、合数に応じて予め設定される所定時間の間で行われる。   First, the outline of each process of the quick cooking course in the pressurized rice cooking state will be described according to the time chart of FIG. In the time chart of FIG. 5, the change in the set pressure is described in the upper part, the pressure change in the inner pot 23 is described in the lower part, the temperature change in the inner pot 23 is described in the lower part, and each process is in the lower part. The approximate heating amount, the execution time in each step, the inner pan temperature, the set pressure, and the operating state of the pressure adjusting device are described. Note that the additional cooking step and the unevenness step are performed during a predetermined time set in advance according to the total number.

メニュースイッチ65dで早炊きコースが選択されると、昇温工程、沸騰維持工程、追い炊き工程及びむらし工程からなる炊飯工程が実行される。なお、早炊きコースは、加圧状態で且つ炊飯時間をできるだけ短くするコースであり、吸水工程は省略されるとともに、各工程もできるだけ短い時間で行われるように設定されている。   When the quick cooking course is selected with the menu switch 65d, a rice cooking process including a temperature raising process, a boiling maintenance process, a cooking process, and a spotting process is executed. In addition, a quick cooking course is a course which makes a rice cooking time as short as possible in a pressurized state, and the water absorption process is omitted, and each process is set to be performed in as short a time as possible.

即ち、高出力でワークコイル27、28の出力を急激に上げ、お米と水を沸騰させるための昇温工程が水がほぼ沸騰するまでの間行われ、この昇温工程で昇温時間に基づいて内鍋23内のご飯量である合数が判定され、そのご飯量の合数に基づいて以後の追い炊き工程等の時間が決定される。   That is, the output of the work coils 27 and 28 is rapidly increased at a high output, and the temperature raising process for boiling the rice and water is performed until the water is substantially boiled. Based on the total number of rice in the inner pot 23, the subsequent cooking time and the like are determined based on the total number of rice.

昇温工程後、沸騰維持工程が中出力で水がなくなるまで行われ、その後、追い炊き工程が低出力で且つ合数に応じた所定時間行われる。この追い炊き工程では所定の温度降下線に沿って内鍋23内の温度を段階的に低下する制御が行われ、追い炊き工程が終了する所定時間後では、内鍋23内の圧力は1気圧近傍に低下する。追い炊き工程後、むらし工程が低出力で行われ、このむらし工程で炊き上がったご飯を充分むらし、ご飯を最適な状態にして炊飯工程が終了される。なお、上記温度降下線は、直線が好ましいが、曲線であってもよい。   After the temperature raising step, the boiling maintaining step is performed until the water is exhausted at medium output, and then the additional cooking step is performed at a low output and for a predetermined time corresponding to the total number. In this additional cooking process, the temperature in the inner pot 23 is controlled stepwise along a predetermined temperature drop line. After a predetermined time after the additional cooking process is finished, the pressure in the inner pot 23 is 1 atm. It drops to the vicinity. After the follow-up cooking process, the unevenness process is performed at a low output, and the rice cooked in this unevenness process is sufficiently unevend to bring the rice into an optimal state and the rice cooking process is completed. The temperature drop line is preferably a straight line, but may be a curve.

炊飯が開始されると、圧力調整装置50がオンし、球状弁52が通気孔56を閉鎖し、1.2〜1.3気圧での加圧炊飯が行われる。圧力調整装置50は、追い炊き工程からむらし工程に移る直前にオフされ、球状弁52が通気孔56を開放して内鍋23内を大気に連通する。この大気開放時には、内鍋23内の圧力は、追い炊き工程で行われる温度を段階的に下げる温調制御により1気圧近傍にまで下げられているため、高圧の蒸気やおねばが蒸気口から外部に噴出する弊害はなくなる。   When rice cooking is started, the pressure adjusting device 50 is turned on, the spherical valve 52 closes the vent hole 56, and pressurized rice cooking at 1.2 to 1.3 atm is performed. The pressure adjusting device 50 is turned off immediately before moving from the additional cooking process to the unevenness process, and the spherical valve 52 opens the vent hole 56 to communicate the inside of the inner pot 23 to the atmosphere. At the time of opening to the atmosphere, the pressure in the inner pot 23 is lowered to around 1 atm by temperature control that gradually reduces the temperature performed in the additional cooking process. The harmful effect of erupting outside is eliminated.

追い炊き工程で行われる温調制御について図7により説明する。図7には、1〜2合のもの、3〜4合のもの及び5〜5.5合のものの温度降下線が記載される。即ち、1〜2合のものは、例えば125℃から所定温度である105℃までを所定時間である5分間で行うように設定され(5分の追い炊き工程)、3〜4合のものは、例えば128℃から所定温度である105℃までを所定時間である8分間で行うように設定され(8分の追い炊き工程)、5〜5.5合のものは、例えば130℃から所定温度である105℃までを所定時間である10分間で行うように設定されている(10分の追い炊き工程)。   The temperature control performed in the additional cooking process will be described with reference to FIG. In FIG. 7, temperature drop lines of 1 to 2 go, 3 to 4 go and 5 to 5.5 go are listed. In other words, the one for 1 to 2 is set so that, for example, from 125 ° C. to 105 ° C. which is a predetermined temperature is performed for 5 minutes which is a predetermined time (5 minutes additional cooking process), For example, it is set to carry out from 128 ° C. to 105 ° C., which is a predetermined temperature, for 8 minutes, which is a predetermined time (8 minutes additional cooking process). To 105 ° C. is set to be performed for a predetermined time of 10 minutes (10 minutes additional cooking step).

なお、いずれの合数であっても、降下させる所定温度は105℃としているが、それ以外の温度であってもよい。また、合数も3段階に分けて説明したが、それ以下であってもそれ以上に分けてもよい。要は、合数が多い程、所定時間を長くする。   It should be noted that the predetermined temperature to be lowered is 105 ° C. at any number, but other temperatures may be used. In addition, the total number has been described in three stages, but it may be less or even more. In short, the larger the number, the longer the predetermined time.

これら制御は、いずれも沸騰維持工程後の温度と所定時間とを結ぶ直線(1〜2合の場合で言えば、125℃の点と5分の点を結ぶ右下がりの直線)からなるマップを用意し、同一の出力、例えば、ワークコイル27、28を60%、ONデューティ比6/16の低出力で出力させ、保温ヒータ30及び蓋ヒータ61を10/16で出力させ、設定温度によりオンオフすることにより行われる。   Each of these controls is a map consisting of a straight line connecting the temperature after the boiling maintenance step and a predetermined time (in the case of 1-2, a straight line going down to the right between 125 ° C and 5 minutes). Prepare the same output, for example, work coils 27 and 28 are output at a low output of 60% and ON duty ratio 6/16, the heat retaining heater 30 and the lid heater 61 are output at 10/16, and turn on / off depending on the set temperature Is done.

即ち、センターセンサ25により所定時間毎に内鍋23の温度を検知し、直線上の所定温度より下がったら加熱手段である、例えばワークコイル27、28をオンし、その後直線上の所定温度より上がったらワークコイル27、28をオフするというように加熱手段のオンオフを繰り返すことにより予め設定された温度降下線に沿った段階的制御を行う。   That is, the temperature of the inner pot 23 is detected every predetermined time by the center sensor 25. When the temperature falls below the predetermined temperature on the straight line, the heating means, for example, the work coils 27 and 28 are turned on, and then rises above the predetermined temperature on the straight line. Then, stepwise control is performed along a preset temperature drop line by repeatedly turning on and off the heating means such as turning off the work coils 27 and 28.

各合数の温度降下線は、各合数に適した直線として予め設定されており、最適な追い炊きと最適な温度降下、即ちいずれの合数であっても追い炊き工程終了後には内鍋23内の圧力が1気圧近傍になる圧力降下が行われる。このような制御は、大気温度の影響を受けにくく、圧力をほぼ均一に減圧させることができる。即ち、大気温度が低い時には十分な加熱が行われ、大気温度が高い時には加熱が抑えられるため、いずれにしても圧力をほぼ均一に減圧させることができる。   The temperature drop line for each number is set in advance as a straight line suitable for each number, and the optimum pot cooking and the optimum temperature drop, i.e., the inner pot after completion of the pot cooking process at any number. A pressure drop is performed so that the pressure in 23 is close to 1 atm. Such control is not easily affected by the atmospheric temperature, and the pressure can be reduced almost uniformly. That is, sufficient heating is performed when the atmospheric temperature is low, and heating is suppressed when the atmospheric temperature is high. In any case, the pressure can be reduced almost uniformly.

次いで図6のフローチャートに従って加圧炊飯時の早炊きコースの各工程の概略について説明する。メニュースイッチ65dで早炊きコースが選択され炊飯スイッチ65aが押されると早炊き炊飯が開始される。   Next, the outline of each process of the quick cooking course at the time of pressurized rice cooking will be described according to the flowchart of FIG. When a quick cooking course is selected by the menu switch 65d and the rice cooking switch 65a is pressed, the quick cooking rice is started.

すると、ステップS1で圧力調整装置50がオンし、球状弁52が通気孔56を閉鎖し1.2〜1.3気圧での加圧炊飯が行われることになる。次いでステップS2に進み、高出力でワークコイル27、28の出力を急激に上げ、お米を一気に炊き上げる昇温工程が実行される。   Then, the pressure adjusting device 50 is turned on in step S1, the spherical valve 52 closes the vent hole 56, and pressurized rice cooking at 1.2 to 1.3 atm is performed. Next, the process proceeds to step S2, and a heating process is performed in which the outputs of the work coils 27 and 28 are rapidly increased at a high output to cook rice at a stretch.

次いで、ステップS3で蓋センサ60による沸騰検知が行われ、沸騰が検出されるまでこのステップが繰り返される。なお、蓋センサ60は、内蓋58の内鍋23とは反対側の面に取り付けられているため、その検知温度は100℃より低い温度、例えば70℃に設定されている。そして、沸騰検知時間に基づいて内鍋23内のご飯量である合数が判定される。   Next, in step S3, boiling detection is performed by the lid sensor 60, and this step is repeated until boiling is detected. Since the lid sensor 60 is attached to the surface of the inner lid 58 opposite to the inner pot 23, the detected temperature is set to a temperature lower than 100 ° C., for example, 70 ° C. And the total number which is the amount of rice in the inner pot 23 is determined based on boiling detection time.

沸騰が検知されると、ステップS4に進み、沸騰維持工程が実行される。沸騰維持工程は、中出力で水がなくなるまで行われることになる。即ち、ステップS5で内鍋23の温度が130℃になったかの判定が行われる。この判定はセンターセンサ25の検出信号を用いて行われることになる。そして、130℃が検出されるまでこのステップが繰り返される。   If boiling is detected, it will progress to step S4 and a boiling maintenance process will be performed. The boiling maintenance process is performed until water runs out at medium output. That is, in step S5, it is determined whether the temperature of the inner pot 23 has reached 130 ° C. This determination is performed using the detection signal of the center sensor 25. This step is repeated until 130 ° C. is detected.

ステップS5で130℃が検出されるとステップS6に進み、100℃近傍である105℃へ段階的に降下させる温調制御である追い炊き工程が実行される。この追い炊き工程での温調制御は、上記したように低出力で且つ合数に応じた所定時間、所定の温度降下線に沿って内鍋23の温度を段階的に低下する制御であり、追い炊き工程が終了するまでの所定時間の間実行され、内鍋23内の圧力を1気圧近傍に低下させる。即ち、ステップS7で所定時間が経過したかで判定され、所定時間が経過しない間、このステップが繰り返される。このように、追い炊き工程までを加圧状態で炊飯を行うことにより炊飯時間を短くすることができる。   If 130 degreeC is detected by step S5, it will progress to step S6 and the additional cooking process which is the temperature control which makes it fall in steps to 105 degreeC which is 100 degreeC vicinity will be performed. The temperature control in this additional cooking step is a control that lowers the temperature of the inner pot 23 stepwise along a predetermined temperature drop line for a predetermined time corresponding to the total number with a low output as described above. It is executed for a predetermined time until the additional cooking process is completed, and the pressure in the inner pot 23 is reduced to around 1 atm. That is, it is determined whether or not the predetermined time has elapsed in step S7, and this step is repeated while the predetermined time has not elapsed. Thus, rice cooking time can be shortened by cooking in a pressurized state up to the additional cooking step.

ステップS7で所定時間が経過するとステップS8に進み、むらし工程が実行される。むらし工程が実行される直前或いは同時であってもよいが、圧力調整装置がオフし、内鍋23内を大気に開放する。そのため、圧力調整装置がオフされたとしても高圧の蒸気やおねばが蒸気口から外部に噴出する弊害はなくなる。そして、むらし工程は大気圧である常圧で低出力で行われることになる。   When a predetermined time elapses in step S7, the process proceeds to step S8, and the unevenness process is executed. The pressure adjusting device is turned off and the inside of the inner pot 23 is opened to the atmosphere, although it may be just before or at the same time as the unevenness process is performed. For this reason, even if the pressure adjusting device is turned off, there is no adverse effect that high-pressure steam or rice cake is ejected from the steam port to the outside. The unevenness process is performed at a normal pressure which is atmospheric pressure and a low output.

このむらし工程では、炊き上がったご飯が充分むらされ、ご飯を最適な状態にして炊飯工程が終了され、必要であれば保温工程に進むことになる。   In this unevenness process, the cooked rice is sufficiently uneven, the rice is brought into an optimal state, the rice cooking process is terminated, and if necessary, the process proceeds to a heat retaining process.

本発明は、前記実施例の構成に限定されるものではなく、発明の要旨を逸脱しない範囲において適宜設計変更可能であり、例えば、加熱手段は全てヒータでもよく、内鍋も金属製、陶磁器製等、どのような材質のものでもよい。また、上記実施例では、追い炊き工程での温調制御は早炊きコースとして説明したが、かならずしも早炊きコースでなくてもよい。更に、早炊きコースに吸水工程を設けてもよい。   The present invention is not limited to the configuration of the above embodiment, and can be appropriately changed in design without departing from the gist of the invention. For example, all the heating means may be a heater, and the inner pot is also made of metal or ceramic. Any material may be used. Moreover, in the said Example, although the temperature control in the additional cooking process was demonstrated as an early cooking course, it does not necessarily need to be an early cooking course. Furthermore, you may provide a water absorption process in a quick-cooking course.

20…圧力式炊飯器 21…炊飯器本体
22…外ケース 23…内鍋
24…内ケース 24a…センサ挿入孔
25…センターセンサ 26…肩部材
27…底部ワークコイル 28…側部ワークコイル
29…コイル支持台 30…保温ヒータ
31…底部材 32…制御基板
33…冷却フィン 34…冷却ファン
35…コード巻取器 40…蓋体
42…蓋下部材 43…ヒンジ軸
44…蒸気排出筒 45…ロックレバー
46…押圧部材 46a…上動ばね
47…レバー軸 48…蓋開放部材
50…圧力調整装置 51…ソレノイド
52…球状弁 53…プランジャ
54…突起部 55…コイルばね
56…通気孔 58…内蓋
59…蒸気室 60…蓋センサ
61…蓋ヒータ 65…操作パネル
65a…炊飯スイッチ 65b…保温スイッチ
65c…予約スイッチ 65d…メニュースイッチ
65e…おこげスイッチ 65f…時・分スイッチ
65g…取消スイッチ 66…表示部
70…マイコン制御ユニット 71…温度検知回路
72…パルス幅変調回路 73…同期トリガー回路
74…IGBT駆動回路 75…IGBT
76…共振コンデンサ 77…家庭用AC電源
78…整流回路 79…平滑回路
80…保温ヒータ駆動回路 81…蓋ヒータ駆動回路
82…報知部 83…発振回路(OSC)
84…リセット回路 100…マイコン制御装置
DESCRIPTION OF SYMBOLS 20 ... Pressure type rice cooker 21 ... Rice cooker main body 22 ... Outer case 23 ... Inner pan 24 ... Inner case 24a ... Sensor insertion hole 25 ... Center sensor 26 ... Shoulder member 27 ... Bottom work coil 28 ... Side work coil 29 ... Coil Support stand 30 ... Insulating heater 31 ... Bottom member 32 ... Control board 33 ... Cooling fin 34 ... Cooling fan 35 ... Cord winder 40 ... Lid member 42 ... Lid lower member 43 ... Hinge shaft 44 ... Steam discharge cylinder 45 ... Lock lever 46 ... Pressing member 46a ... Upper moving spring 47 ... Lever shaft 48 ... Lid opening member 50 ... Pressure adjusting device 51 ... Solenoid 52 ... Spherical valve 53 ... Plunger 54 ... Protrusion 55 ... Coil spring 56 ... Vent hole 58 ... Inner lid 59 ... Steam chamber 60 ... Lid sensor 61 ... Lid heater 65 ... Operation panel 65a ... Rice cooking switch 65b ... Insulation switch 65c ... Reservation switch 5d ... Menu switch 65e ... Oke switch 65f ... Hour / minute switch 65g ... Cancel switch 66 ... Display unit 70 ... Microcomputer control unit 71 ... Temperature detection circuit 72 ... Pulse width modulation circuit 73 ... Synchronous trigger circuit 74 ... IGBT drive circuit 75 ... IGBT
76 ... Resonant capacitor 77 ... AC power source for home use 78 ... Rectifier circuit 79 ... Smoothing circuit 80 ... Insulation heater drive circuit 81 ... Cover heater drive circuit 82 ... Notification unit 83 ... Oscillator circuit (OSC)
84 ... Reset circuit 100 ... Microcomputer controller

Claims (2)

内鍋を収納する炊飯器本体と、蓋体と、前記内鍋を加熱する加熱手段と、前記加熱手段を制御する制御手段と、前記内鍋内の圧力を調整する圧力調整装置とを有する圧力式炊飯器において、
炊飯開始から炊き上げ後の追い炊き工程まで前記内鍋内を加圧状態にし、
前記追い炊き工程では、前記内鍋内の温度を段階的に低下させることを特徴とする圧力式炊飯器。
The pressure which has the rice cooker main body which accommodates an inner pot, a cover body, the heating means which heats the said inner pot, the control means which controls the said heating means, and the pressure regulator which adjusts the pressure in the said inner pot In the rice cooker,
From the start of cooking rice to the additional cooking process after cooking, the inside of the inner pot is in a pressurized state,
In the additional cooking step, the temperature in the inner pot is lowered stepwise to provide a pressure rice cooker.
前記内鍋内の段階的な温度低下は、合数が多い程長い所定時間の間で行われることを特徴とする請求項1に記載の圧力式炊飯器。   The pressure rice cooker according to claim 1, wherein the stepwise temperature decrease in the inner pot is performed for a longer predetermined time as the total number is larger.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019030383A (en) * 2017-08-04 2019-02-28 アイリスオーヤマ株式会社 Rice cooking method and rice cooker
JP2020526307A (en) * 2017-10-10 2020-08-31 グリー エレクトリック アプライアンスィズ(ウーハン)カンパニー リミテッド Cooking utensils and their control methods
JP2021177860A (en) * 2020-05-12 2021-11-18 タイガー魔法瓶株式会社 rice cooker

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JP2005211577A (en) * 2004-02-02 2005-08-11 Zojirushi Corp Pressure rice cooker
JP2009100887A (en) * 2007-10-23 2009-05-14 Sanyo Electric Co Ltd Rice cooker
JP2011078533A (en) * 2009-10-06 2011-04-21 Sanyo Electric Co Ltd Pressure rice cooker

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Publication number Priority date Publication date Assignee Title
JP2005211577A (en) * 2004-02-02 2005-08-11 Zojirushi Corp Pressure rice cooker
JP2009100887A (en) * 2007-10-23 2009-05-14 Sanyo Electric Co Ltd Rice cooker
JP2011078533A (en) * 2009-10-06 2011-04-21 Sanyo Electric Co Ltd Pressure rice cooker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019030383A (en) * 2017-08-04 2019-02-28 アイリスオーヤマ株式会社 Rice cooking method and rice cooker
JP2020526307A (en) * 2017-10-10 2020-08-31 グリー エレクトリック アプライアンスィズ(ウーハン)カンパニー リミテッド Cooking utensils and their control methods
JP2021177860A (en) * 2020-05-12 2021-11-18 タイガー魔法瓶株式会社 rice cooker
JP7448807B2 (en) 2020-05-12 2024-03-13 タイガー魔法瓶株式会社 rice cooker

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