JP2009011622A

JP2009011622A - Electric rice cooker

Info

Publication number: JP2009011622A
Application number: JP2007178140A
Authority: JP
Inventors: 健三 ▲高▼橋; Kenzo Takahashi; Kazuyoshi Negishi; 和善根岸; Takanobu Kamioka; 孝暢上岡
Original assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Priority date: 2007-07-06
Filing date: 2007-07-06
Publication date: 2009-01-22
Anticipated expiration: 2027-07-06
Also published as: JP4879103B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric rice cooker capable of reliably eliminating waterdrops adhered to the inside of an inner lid and cooking tasty rice by storing glutinous rice produced in a rice cooking process in a cartridge and efficiently returning it to an inner pot after the rice cooking process is over. <P>SOLUTION: The electric rice cooker includes: an inner pot 17 for containing cooked stuff; a rice cooker main body 1 whose upper surface is open and freely removably houses the inner pot 17; a heating means 6 for the inner pot 17; a control means 12 for controlling the heating means 6 of the inner pot 17; and a lid body 20 for opening/closing the opening part of the rice cooker main body 1. A vibration unit 70 which is driven with a low frequency current and mechanically vibrates is provided to the lid body 20. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、電気炊飯器に係り、より詳しくは、炊飯工程時等において蓋体の内蓋の内面に付着した水滴を除去すると共に、カートリッジに溜ったおねばを効率よく内釜に戻すことのできる電気炊飯器に関するものである。 The present invention relates to an electric rice cooker, and more specifically, removes water droplets adhering to the inner surface of the inner lid of the lid body during the rice cooking process, etc., and efficiently returns the rice cake accumulated in the cartridge to the inner pot. It relates to an electric rice cooker.

電気炊飯器においては、炊飯時や保温時などに発生した蒸気が蓋体の内蓋の内面に付着して水滴となり、また、保温時に外気温度が低い場合などには、蓋体が冷却されて内蓋の内面に多量の水滴が付着することがある。このような水滴は、蓋体の開放時にご飯の上に落下してビチャビチャになって不味くなったり、あるいは炊飯器の周囲に落下して掃除しなければならないことがある。 In an electric rice cooker, steam generated during rice cooking or warming adheres to the inner surface of the inner lid of the lid, forming water droplets. If the outside air temperature is low during warming, the lid is cooled. A large amount of water droplets may adhere to the inner surface of the inner lid. Such water droplets may fall on the rice when the lid is opened and become bitter and tasteless, or fall around the rice cooker and have to be cleaned.

このような問題を解決するために、電気炊飯器の蓋ユニットの内側に設けられて内鍋の蓋部を構成する放熱板の上面に超音波振動子を設け、この放熱板を高周波振動させることにより、放熱板の内面に付着した液滴を飛散させるようにしたものがある（例えば、特許文献１参照）。 In order to solve such problems, an ultrasonic vibrator is provided on the upper surface of the heat radiating plate that is provided inside the lid unit of the electric rice cooker and constitutes the lid portion of the inner pan, and this heat radiating plate is vibrated at high frequency. Thus, there is one in which droplets adhering to the inner surface of the heat radiating plate are scattered (see, for example, Patent Document 1).

特開平９−１２２０１２号公報（第２−４頁、図１−２）Japanese Patent Laid-Open No. 9-122012 (page 2-4, FIG. 1-2)

特許文献１の電気炊飯器は、放熱板の上面に設けた高周波振動子により放熱板を振動させて、その内面に付着した液滴を飛散させるようにしているが、高周波振動子による振動は微振動であり、その上放熱板は固定されているため十分に振動することができず、そのため、放熱板の内面に付着した液滴の除去効果が不十分であった。 In the electric rice cooker of Patent Document 1, the heat sink is vibrated by a high frequency vibrator provided on the upper surface of the heat sink, and droplets adhering to the inner surface are scattered. Moreover, since the heat sink is fixed, the heat sink cannot be sufficiently vibrated. Therefore, the effect of removing droplets adhering to the inner surface of the heat sink is insufficient.

また、放熱板は蓋ユニットに固定されて着脱できないため、炊飯時に発生したおねばなどで汚れた放熱板の清掃が面倒であった。
さらに、炊飯時に発生するうまみを含んだおねばを溜めるカートリッジが設けられていないため、炊飯終了時におねばを内鍋に戻すことができなかった。 Moreover, since the heat sink is fixed to the lid unit and cannot be attached or detached, cleaning of the heat sink contaminated with a rice bowl generated during rice cooking has been troublesome.
Furthermore, since the cartridge which collects the rice cake containing the umami generated at the time of rice cooking is not provided, the rice cooker could not be returned to the inner pot at the end of rice cooking.

本発明は、上記の課題を解決するためになされたもので、内蓋の内面に付着した水滴を確実に除去することができ、その上、炊飯工程時に発生したおねばをカートリッジに溜めて、炊飯工程終了後に効率よく内釜に戻すことにより、おいしいご飯を炊くことのできる電気炊飯器を提供することを目的とするものである。 The present invention was made in order to solve the above problems, and can reliably remove water droplets adhering to the inner surface of the inner lid. In addition, the rice balls generated during the rice cooking process are stored in the cartridge. It aims at providing the electric rice cooker which can cook delicious rice by efficiently returning to an inner pot after the end of a rice cooking process.

本発明に係る電気炊飯器は、調理物が入れられる内釜と、上面が開口されて前記内釜が着脱自在に収容される炊飯器本体と、前記内釜の加熱手段と、該加熱手段を制御する制御手段と、前記炊飯器本体の開口部を開閉する蓋体とを備え、前記蓋体に、低周波電流で駆動されて機械的に振動する振動ユニットを設けたものである。 An electric rice cooker according to the present invention includes an inner pot in which a food is put, a rice cooker body in which an upper surface is opened and the inner pot is detachably accommodated, heating means for the inner pot, and the heating means. A control means for controlling and a lid for opening and closing the opening of the rice cooker body are provided, and a vibration unit that is mechanically vibrated by being driven by a low-frequency current is provided on the lid.

本発明によれば、炊飯工程などの場合に、内蓋の下面に付着した水滴を、機械的に振動する振動ユニットによって内蓋を振動させることにより確実に除去することができるので、蓋体を開放したときにご飯の中に水滴が落下して不味くなったり、電気炊飯器の周囲に落下したりすることがない。
また、炊飯工程の終了時に振動ユニットにより内蓋に振動を加えることにより、炊飯工程時に発生してカートリッジに溜められたうまみ成分を含み流動しにくいおねばを効率よく内釜に戻すことができるので、おいしいご飯を炊くことができる。 According to the present invention, in the case of a rice cooking process or the like, water droplets adhering to the lower surface of the inner lid can be reliably removed by vibrating the inner lid with a vibration unit that mechanically vibrates. When it is opened, water droplets do not fall into the rice and become tasteless or fall around the electric rice cooker.
In addition, by applying vibration to the inner lid with the vibration unit at the end of the rice cooking process, it is possible to efficiently return the rice balls that contain the umami components that are generated during the rice cooking process and that are difficult to flow to the inner pot. You can cook delicious rice.

［実施の形態１］
図１は本発明の実施の形態１に係る電気炊飯器の縦断面図、図２は図１の蓋体の拡大図である。
図において、１は上部が開口された炊飯器本体、１７は上端部外周にフランジ１８を有し炊飯器本体１内に収容された内釜、２０は炊飯器本体１の後部側（図の右側）にヒンジ部１６により連結されて、炊飯器本体１の上部開口部を開閉する蓋体である。 [Embodiment 1]
FIG. 1 is a longitudinal sectional view of an electric rice cooker according to Embodiment 1 of the present invention, and FIG. 2 is an enlarged view of the lid of FIG.
In the figure, 1 is a rice cooker main body with an open top, 17 is an inner pot having a flange 18 on the outer periphery of the upper end and is accommodated in the rice cooker main body 1, and 20 is a rear side of the rice cooker main body 1 (right side in the figure). ) Is connected to the upper opening of the rice cooker body 1 by the hinge part 16.

炊飯器本体１は、底板３を備え上部が開口されて外周を覆う本体ケース２を有し、本体ケース２内には上部に設置された内釜支持ケース４と、内釜支持ケース４の下方に設置され、下面及びコーナ部に加熱手段である誘導加熱コイル６が設けられたほぼ深皿状のコイル台５と、内釜支持ケース４とコイル台５との間に設けられた円筒状の周壁７とにより、内釜収容部が形成されている。８は内釜支持ケース４の上端部に設けられたリング状の支持台、９は支持台８の前面側に設けられて、蓋体２０を閉じたときに係止する係止部である。 The rice cooker main body 1 has a main body case 2 having a bottom plate 3 and having an upper portion opened to cover the outer periphery. The main body case 2 has an inner pot support case 4 installed at the upper portion, and a lower portion of the inner pot support case 4. And a cylindrical plate provided between the inner pot support case 4 and the coil base 5 and a substantially deep dish-shaped coil base 5 provided with an induction heating coil 6 as a heating means on the lower surface and the corner. An inner hook housing portion is formed by the peripheral wall 7. Reference numeral 8 denotes a ring-shaped support base provided at the upper end of the inner hook support case 4, and 9 denotes a locking part which is provided on the front side of the support base 8 and locks when the lid 20 is closed.

コイル台５の底部中心部には温度センサ１０が設けられており、内釜１７を内釜収納部内に収容したときに、その底部に当接し又は近接して位置する。
また、本体ケース２の前面側上部には、電源スイッチ、メニュースイッチ、後述の振動ユニットのＯＮ−ＯＦＦスイッチ等を有する操作部１１が設けられており、内部の前面側には制御部１２、この制御部１２や誘導加熱コイル６などを冷却するための送風機１３が設けられている。さらに、本体ケース２の底板３には、吸気口１４ａ及び排気口１４ｂが設けられており、底板３の下面には複数の支持脚１５が設けられている。 A temperature sensor 10 is provided at the center of the bottom of the coil base 5, and when the inner hook 17 is housed in the inner hook housing portion, it is in contact with or close to the bottom portion.
An operation unit 11 having a power switch, a menu switch, an ON-OFF switch for a vibration unit described later, and the like is provided on the upper front side of the main body case 2. A blower 13 for cooling the control unit 12 and the induction heating coil 6 is provided. Further, the bottom plate 3 of the main body case 2 is provided with an intake port 14 a and an exhaust port 14 b, and a plurality of support legs 15 are provided on the lower surface of the bottom plate 3.

蓋体２０はその詳細を図２に示すように、下面が開口された上蓋２４、上蓋２４に着脱可能に装着されたカートリッジ３０、上蓋２４の下面開口部内に固定された中蓋４０、中蓋４０に着脱可能に取付けられた内蓋５０及び中蓋４０と内蓋５０と間に配設された内蓋中間部材５５等からなっている。
そして、上蓋２４の前面側には、蓋体２０を閉じたときに炊飯器本体１の係止部９に係止する係止片２３と、この係止片２３を操作する蓋開閉ボタン２２等からなるロック手段２１が設けられており、また、上面には凹部２５が形成されてその底部の後部側には開口部２６が設けられている。２７は凹部２５の下部に設けられたドーム状の弁室である。 As shown in detail in FIG. 2, the lid 20 has an upper lid 24 whose lower surface is opened, a cartridge 30 detachably mounted on the upper lid 24, an inner lid 40 fixed in the lower surface opening of the upper lid 24, and an inner lid The inner lid 50 is detachably attached to the inner lid 50, and the inner lid intermediate member 55 is disposed between the inner lid 40 and the inner lid 50.
And on the front side of the upper lid 24, when the lid 20 is closed, a locking piece 23 that is locked to the locking portion 9 of the rice cooker body 1, a lid opening / closing button 22 that operates this locking piece 23, etc. A locking means 21 is provided, and a recess 25 is formed on the upper surface, and an opening 26 is provided on the rear side of the bottom. Reference numeral 27 denotes a dome-shaped valve chamber provided in the lower part of the recess 25.

上蓋２４の凹部２５に着脱可能に装着されるカートリッジ３０は、後部側には上蓋２４の開口部２６に挿入される有底円筒状の筒状部３１及びこの筒状部３１に隣接して通気孔３４が設けられており、筒状部３１の底部にはおねば通し穴３２が設けられ、このおねば通し穴３２には常開の弁３３が設けられている。３５はカートリッジ３０の前面側上面に設けられた蒸気排出口で、通気孔３４と連通する。 A cartridge 30 that is detachably mounted in the recess 25 of the upper lid 24 has a cylindrical portion 31 with a bottomed cylindrical shape that is inserted into the opening 26 of the upper lid 24 and a cylindrical portion 31 that is adjacent to the cylindrical portion 31. An air hole 34 is provided, and a through hole 32 is provided at the bottom of the cylindrical portion 31, and a normally open valve 33 is provided in the through hole 32. Reference numeral 35 denotes a vapor discharge port provided on the upper surface on the front side of the cartridge 30, which communicates with the vent hole 34.

上蓋２４の下面開口部に設けられた中蓋４０、内蓋５０及び内蓋中間部材５５の詳細を図３に示す。
中蓋４０はその中心部から若干後部側に片寄って開口部４１が設けられており、外周側の周方向にはほぼ等間隔で複数の係止穴４２が設けられている。そして係止穴４２の内側と外側にはガイド壁４３ａ，４３ｂが設けられており、外側のガイド壁４３ｂは中蓋４０の上面から突出している。４４は中蓋４０の下面の各係止穴４２のガイド壁４３ａの内側に設けられ、付勢手段であるコイル状のばね４５が介装されるばね座である。なお、この付勢手段はコイル状のばね４５に限定するものではなく、例えば板ばね等、他のばねでもよい。 The details of the inner lid 40, the inner lid 50, and the inner lid intermediate member 55 provided in the lower surface opening of the upper lid 24 are shown in FIG.
The inner lid 40 is provided with an opening 41 slightly offset from the center to the rear side, and a plurality of locking holes 42 are provided at substantially equal intervals in the circumferential direction on the outer peripheral side. Guide walls 43 a and 43 b are provided inside and outside the locking hole 42, and the outer guide wall 43 b projects from the upper surface of the inner lid 40. Reference numeral 44 denotes a spring seat which is provided inside the guide wall 43a of each locking hole 42 on the lower surface of the inner lid 40 and in which a coiled spring 45 serving as a biasing means is interposed. The urging means is not limited to the coiled spring 45, and may be another spring such as a leaf spring.

内蓋５０は熱伝導のよい金属材料からなり、中心部には中蓋４０の開口部より小径の開口部５１が設けられている。また、開口部５１の一方の側にはおねば戻り穴５２が設けられており、このおねば戻り穴５２は、内蓋５０の下面に設けた常開のゴムパッキンの如き弁５３により開閉されるようになっている。
内蓋中間部材５５は、熱伝導のよい金属材料からなり、中蓋４０の開口部４１と同心的に、かつこれより大径の開口部５６が設けられている。そして、開口部５６の外周の上面には、主として保温時にご飯を均一に加熱するための蓋ヒータ５７が設けられており、また外周には、中蓋４０の係止穴４２に対応して係止片５８が設けられている。 The inner lid 50 is made of a metal material having good heat conduction, and an opening 51 having a smaller diameter than the opening of the inner lid 40 is provided at the center. Further, a return hole 52 is provided on one side of the opening 51, and this return return hole 52 is opened and closed by a valve 53 such as a normally open rubber packing provided on the lower surface of the inner lid 50. It is like that.
The inner lid intermediate member 55 is made of a metal material having good heat conductivity, and is provided with an opening 56 concentrically with the opening 41 of the inner lid 40 and having a larger diameter. A lid heater 57 is provided on the upper surface of the outer periphery of the opening 56 mainly to uniformly heat the rice during the heat retention, and the outer periphery is engaged with the engagement hole 42 of the inner lid 40. A stop piece 58 is provided.

再び図２において、６０は内蓋５０の開口部５１に取付けられた有天の円筒で、その天面には弁座６１が形成されており、その中心部には弁孔６２が設けられている。そして、弁座６１には弁孔６２を開閉する調整ボール６３が載置されている。６４は弁室２７と通気孔３４を連通する蒸気通路である。 In FIG. 2 again, reference numeral 60 denotes a ceiling cylinder attached to the opening 51 of the inner lid 50. A valve seat 61 is formed on the top surface of the cylinder, and a valve hole 62 is provided in the center thereof. Yes. An adjustment ball 63 for opening and closing the valve hole 62 is placed on the valve seat 61. A steam passage 64 communicates the valve chamber 27 and the vent hole 34.

７０は低周波電流で駆動される磁力式の機械的振動や、振動モータ、スピーカ等の機械的振動を用いた振動ユニットで、中蓋４０の上面の係止穴４２の内側、つまりばね座４４の上部近傍に取付けられている。図４に磁力式振動を用いた振動ユニット７０の一例を示す。 Reference numeral 70 denotes a vibration unit that uses magnetic mechanical vibration driven by a low-frequency current, or mechanical vibration such as a vibration motor or a speaker, and is located inside the locking hole 42 on the upper surface of the inner lid 40, that is, the spring seat 44. It is attached near the top of the. FIG. 4 shows an example of a vibration unit 70 using magnetic vibration.

この振動ユニット７０は、振動発生部７１と、この振動発生部７１が収納されるケース８５とからなっており、振動発生部７１は、鉄心７３、鉄心７３の周囲においてボビン７４に巻かれた励磁コイル７５からなる電磁石７２と、連結用部材７６と、弾性体である第１、第２のばね部材８０ａ，８０ｂとによって構成されている。 The vibration unit 70 includes a vibration generator 71 and a case 85 in which the vibration generator 71 is accommodated. The vibration generator 71 is an iron core 73 and an excitation wound around a bobbin 74 around the iron core 73. The electromagnet 72 includes a coil 75, a connecting member 76, and first and second spring members 80a and 80b that are elastic bodies.

連結用部材７６は鉄などの磁性材料からなり、自然長における第１，第２のばね部材８０ａ，８０ｂの合計長さより短かい円柱状に形成され、その上下方向のほぼ中央部には円板状の支持板７７が設けられており、上端部には永久磁石７８が取付けられている。 The connecting member 76 is made of a magnetic material such as iron, and is formed in a columnar shape shorter than the total length of the first and second spring members 80a and 80b in the natural length. A support plate 77 is provided, and a permanent magnet 78 is attached to the upper end portion.

弾性体である第１、第２のばね部材８０ａ，８０ｂは、例えば非磁性ステンレスやリン青銅などの非磁性材によって、円錐状かつコイル状に形成されており、その小径側は連結用部材７６の支持板７７の外径より小径で、大径側は電磁石７２のボビン７４の外径とほぼ等しく形成されている。 The first and second spring members 80a and 80b, which are elastic bodies, are formed in a conical shape and a coil shape by a nonmagnetic material such as nonmagnetic stainless steel or phosphor bronze, and the small diameter side thereof is a connecting member 76. The outer diameter of the support plate 77 is smaller than the outer diameter, and the larger diameter side is formed substantially equal to the outer diameter of the bobbin 74 of the electromagnet 72.

ケース８５は例えば合成樹脂成形品からなり、振動発生部７１が収納される有天で円筒状の収納部８６と、ねじ挿通穴を有し収納部８６の上端部両側に設けられた取付腕８７と、下部開口部を閉塞する蓋８８とからなっている。なお、８９は収納部８６の上部に設けられて、収納された電磁石７２の励磁コイル７５のリード線（図示せず）を引出すリード線引出し口である。 The case 85 is made of, for example, a synthetic resin molded product, and has a cylindrical and cylindrical storage portion 86 in which the vibration generating portion 71 is stored, and mounting arms 87 having screw insertion holes and provided on both sides of the upper end portion of the storage portion 86. And a lid 88 that closes the lower opening. Reference numeral 89 denotes a lead wire outlet provided in the upper portion of the storage portion 86 and from which a lead wire (not shown) of the exciting coil 75 of the stored electromagnet 72 is drawn.

上記のような振動ユニット７０を組立てるには、先ず、ケース８５の下部開口部から収納部８６内に、電磁石７２を先にして振動発生部７１を挿入する。このとき、振動発生部７１の上下方向の自然長（高さ）は、ケース８５の収納部８６の長さ（深さ）より長いため、第２のばね部材８０ｂの下部は、ケース８５の開口部から発生している。
この状態で、蓋８８を第２のばね部材８０ｂの大径部に当接して収納部８６内に押し込み、開口部を閉塞する。これにより、第１、第２のばね部材８０ａ，８０ｂは圧縮されて付勢力を生じ、連結用部材７６は両ばね部材８０ａ，８０ｂに支持されて、先端部に設けた永久磁石７８が電磁石７２の鉄心７３と所定のすき間を隔て対向する。 To assemble the vibration unit 70 as described above, first, the vibration generating portion 71 is inserted into the housing portion 86 from the lower opening of the case 85 with the electromagnet 72 first. At this time, since the natural length (height) of the vibration generating portion 71 in the vertical direction is longer than the length (depth) of the housing portion 86 of the case 85, the lower portion of the second spring member 80b is the opening of the case 85. It is generated from the department.
In this state, the lid 88 is brought into contact with the large diameter portion of the second spring member 80b and pushed into the storage portion 86, thereby closing the opening. As a result, the first and second spring members 80a and 80b are compressed to generate an urging force, the connecting member 76 is supported by both the spring members 80a and 80b, and the permanent magnet 78 provided at the distal end is electromagnet 72. Facing the iron core 73 with a predetermined gap.

上記のように構成した振動ユニット７０において、図５（ａ）に示すように、電磁石７２の励磁コイル７５に商用交流電源９５を接続して通電すると、図５（ｂ）に示すように、交流周波数に応じて電流の向きが変るため、これに励磁された鉄心７３の極性が交流周波数に応じて交互に変化する。これにより、連結用部材７６に取付けられた永久磁石７８が鉄心７３の極性に応じて吸引と反発が繰返えされ、これに伴って連結用部材７６が上下に移動する。 In the vibration unit 70 configured as described above, when a commercial AC power supply 95 is connected to the excitation coil 75 of the electromagnet 72 and energized as shown in FIG. 5A, an AC current is generated as shown in FIG. Since the direction of the current changes according to the frequency, the polarity of the iron core 73 excited by this changes alternately according to the AC frequency. Thereby, the permanent magnet 78 attached to the connecting member 76 is repeatedly attracted and repelled according to the polarity of the iron core 73, and the connecting member 76 moves up and down accordingly.

連結用部材７６の上下動により、これを支持する第１、第２のばね部材８０ａ，８０ｂが圧縮、伸張を繰り返えして振動し、この振動がケース８５に伝達される。なお、上記の説明では、電磁石７２に全波交流電流を供給する場合を示したが、商用交流電源９５の電源回路にダイオードなどの整流器を接続し、電磁石７２に半波交流電流を供給するようにしてもよい。これにより、電磁石７２には間欠的に電流が供給されるので、電磁石７２の発熱を抑制することができる。 As the connecting member 76 moves up and down, the first and second spring members 80 a and 80 b that support the member 76 vibrate by repeating compression and expansion, and this vibration is transmitted to the case 85. In the above description, a case where a full-wave AC current is supplied to the electromagnet 72 is shown. However, a rectifier such as a diode is connected to the power supply circuit of the commercial AC power supply 95 so that a half-wave AC current is supplied to the electromagnet 72. It may be. Thereby, since an electric current is intermittently supplied to the electromagnet 72, the heat generation of the electromagnet 72 can be suppressed.

上記のような振動ユニット７０は、ケース８５の取付腕８７を、中蓋４０の例えばばね座４４の上面側に当接し、取付腕８７のねじ挿通穴に挿通したねじを中蓋４０に設けたねじ穴に螺入し、その振動方向が中蓋４０に対してほぼ垂直になるように取付けられる。 In the vibration unit 70 described above, the mounting arm 87 of the case 85 is brought into contact with, for example, the upper surface side of the spring seat 44 of the inner lid 40, and a screw inserted through the screw insertion hole of the mounting arm 87 is provided in the inner lid 40. It is screwed into the screw hole and attached so that its vibration direction is substantially perpendicular to the inner lid 40.

上記のように振動ユニット７０が設けられた中蓋４０は、図示しない固定手段により上蓋２４の開口部内に固定され、その下面に、ばね座４４との間にばね４５を介して中蓋中間部材５５を配設し、その各係止片５８を中蓋４０の係止穴４２に挿入し、その上端部を中蓋４０の上面に沿ってそれぞれ内側に折曲げる。これにより、内蓋中間部材５５は中蓋４０に上下動可能に保持される。このとき、内蓋中間部材５５はばね４５に押されて下降し、図７に示すように、係止片５８の折曲げ部５８ａが中蓋４０の上面に係止する。 As described above, the inner lid 40 provided with the vibration unit 70 is fixed in the opening of the upper lid 24 by fixing means (not shown), and the inner lid intermediate member is interposed between the spring lid 44 and the lower surface of the inner lid 40. 55 is disposed, and each locking piece 58 is inserted into the locking hole 42 of the inner lid 40, and its upper end is bent inward along the upper surface of the inner lid 40. Thereby, the inner lid intermediate member 55 is held by the inner lid 40 so as to be movable up and down. At this time, the inner lid intermediate member 55 is pushed downward by the spring 45 and the bent portion 58a of the locking piece 58 is locked to the upper surface of the inner lid 40 as shown in FIG.

ついで、調整ボール６３を有する内筒６０を中蓋４０の開口部４１から蒸気室２７に挿入し、内蓋５０を内蓋中間部材５５の下面に当接して着脱可能に中蓋４０に装着する。このとき、弁室２７と通気孔３２との間には蒸気通路６４が形成される。また、内蓋中間部材５５は内蓋５０により押上げられて係止片５８の折曲げ部５８ａと中蓋４０の上面との間に図６に示すようにすき間ｇが形成され、内蓋中間部材５５はばね４５に付勢されて内蓋５０に当接する。なお、上記のすき間ｇは内蓋中間部材５５の可動範囲である。 Next, the inner cylinder 60 having the adjustment ball 63 is inserted into the steam chamber 27 from the opening 41 of the inner lid 40, and the inner lid 50 is attached to the inner lid 40 so as to be detachable by contacting the lower surface of the inner lid intermediate member 55. . At this time, a steam passage 64 is formed between the valve chamber 27 and the vent hole 32. Further, the inner lid intermediate member 55 is pushed up by the inner lid 50, and a gap g is formed between the bent portion 58a of the locking piece 58 and the upper surface of the inner lid 40 as shown in FIG. The member 55 is biased by the spring 45 and comes into contact with the inner lid 50. The clearance g is the movable range of the inner lid intermediate member 55.

次に、本発明に係る電気炊飯器の炊飯作用について説明する。
内釜１７に調理物である米と水を入れて内釜収容部内に収容し、そのフランジ１８を内釜支持ケース４に設けた支持台８上に載置してセットし、蓋体２０を閉じる。これにより、蓋体２０に設けた係止片２３が炊飯器本体１の係止部９に係止してロックされ、また、蓋体２０の内蓋５０は内釜１７の上部開口部を閉塞して内蓋中間部材５５に当接し、内蓋中間部材５５の係止片５８の折曲げ部５８ａと中蓋４０の上面との間には、図６に示すように、すき間ｇが形成されている。また、弁３３は筒状部３１のおねば通し穴３２を開放し、弁５３は自重によりおねば戻り穴５２を開放している。 Next, the rice cooking action of the electric rice cooker according to the present invention will be described.
Rice and water as cooked foods are put in the inner pot 17 and accommodated in the inner pot accommodating portion, and the flange 18 is placed and set on the support base 8 provided in the inner pot support case 4. close. Thereby, the locking piece 23 provided on the lid 20 is locked by being locked to the locking portion 9 of the rice cooker body 1, and the inner lid 50 of the lid 20 closes the upper opening of the inner pot 17. As shown in FIG. 6, a gap g is formed between the bent portion 58 a of the locking piece 58 of the inner lid intermediate member 55 and the upper surface of the inner lid 40. ing. Further, the valve 33 opens the through hole 32 of the cylindrical portion 31, and the valve 53 opens the return hole 52 if the valve 53 is driven by its own weight.

ついで、操作部１１の炊飯スイッチをＯＮすると、制御部１２に組込まれた制御プログラムにしたがって、炊飯を開始する。このとき、内蓋中間部材５５に設けた蓋ヒータ５７には通常の保温に必要な電力が通電される。
炊飯スイッチをＯＮすると先ず予熱工程が開始され、例えば４０〜６０℃程度に加熱される。所定の時間経過すると、炊飯工程に入る。炊飯工程では火力を上げて水を沸騰状態にし、内釜１７内の水が無くなるまで沸騰を続ける。内釜１７内の水がなくなると、それまで水の蒸発潜熱で消費されていた熱が内釜１７の温度を上昇させることに使われるようになり、内釜１７の温度が急激に上昇する。この温度上昇を温度センサ１０でとらえて炊飯工程を終了し、以後むらし工程に入る。そして、所定の時間経過すると、保温工程に移行する。 Next, when the rice cooking switch of the operation unit 11 is turned on, rice cooking is started according to the control program incorporated in the control unit 12. At this time, electric power necessary for normal heat insulation is supplied to the lid heater 57 provided on the inner lid intermediate member 55.
When the rice cooking switch is turned on, a preheating process is first started, and is heated to, for example, about 40 to 60 ° C. When a predetermined time has elapsed, the rice cooking process is started. In the rice cooking process, the heating power is raised to bring the water to a boiling state, and the boiling is continued until there is no water in the inner pot 17. When the water in the inner pot 17 is exhausted, the heat previously consumed by the latent heat of vaporization of water is used to raise the temperature of the inner pot 17 and the temperature of the inner pot 17 rises rapidly. This temperature rise is caught by the temperature sensor 10 and the rice cooking process is terminated, and then the unevenness process is started. And when predetermined time passes, it transfers to a heat retention process.

上記のような炊飯工程においては、密閉された内釜１７内が高温、高圧となるため、調整ポール６３が押上げられて内筒６０の弁孔６２が開口すると共に、おねば戻し穴５２が弁５３により閉塞され、また、筒状部３１の弁３３が押し上げられておねば通し穴３２を閉塞する。そして、内釜１７内に発生した蒸気の大部分は、弁孔６２、蒸気室２７、蒸気通路６４からカートリッジ３０の通気孔３４を経て蒸気排出口３５から排出され、これに含まれたおねばはカートリッジ３０の筒状部３１内に溜るが、一部の蒸気は内蓋５０の内面に付着して水滴となる。しかし、内蓋５０には、蓋ヒータ４５で加熱された内釜中間部材５５のほぼ全面がばね４５に圧下されて当接しているため、その熱が内蓋５０に伝達されて加熱されており、また振動ユニット７０による振動がばね４５、内蓋中間部材５５を介して内蓋５０に伝達されるので、内蓋５０に付着した水滴はこの熱により蒸発して飛散する。 In the rice cooking process as described above, since the inside of the sealed inner pot 17 becomes high temperature and high pressure, the adjustment pole 63 is pushed up, the valve hole 62 of the inner cylinder 60 is opened, and the general return hole 52 is formed. If the valve 53 is closed and the valve 33 of the cylindrical portion 31 is pushed up, the through hole 32 is closed. And most of the steam generated in the inner pot 17 is discharged from the steam outlet 35 through the vent hole 34 of the cartridge 30 through the valve hole 62, the steam chamber 27, and the steam passage 64, and the included in this Accumulates in the cylindrical portion 31 of the cartridge 30, but a part of the vapor adheres to the inner surface of the inner lid 50 and forms water droplets. However, since almost the entire surface of the inner hook intermediate member 55 heated by the lid heater 45 is pressed against the spring 45 and is in contact with the inner lid 50, the heat is transmitted to the inner lid 50 and heated. In addition, since the vibration by the vibration unit 70 is transmitted to the inner lid 50 via the spring 45 and the inner lid intermediate member 55, the water droplets adhering to the inner lid 50 are evaporated and scattered by this heat.

ところで、炊飯工程においては、前述のように、内釜１７内が高温、高圧になるため、主として内蓋５０が熱変形することがある。しかしながら、内蓋中間部材５５はコイルばね４５により常に圧下されているため、内蓋５０の変形に追従して内蓋中間部材５５が上下動し、その下面の大部分が内蓋５０に当接する。これにより、内蓋中間部材５５の熱が効率よく内蓋５０に伝達され、かつ振動ユニット７０による振動が伝達されるため、下面に付着した水滴を確実に蒸発させ飛散させる。 By the way, in the rice cooking process, as mentioned above, since the inside of the inner pot 17 becomes high temperature and high pressure, the inner lid 50 may mainly be thermally deformed. However, since the inner lid intermediate member 55 is always squeezed by the coil spring 45, the inner lid intermediate member 55 moves up and down following the deformation of the inner lid 50, and most of its lower surface abuts against the inner lid 50. . Thereby, the heat of the inner lid intermediate member 55 is efficiently transmitted to the inner lid 50 and the vibration by the vibration unit 70 is transmitted, so that water droplets adhering to the lower surface are surely evaporated and scattered.

炊飯工程が終って内釜１７内の温度及び圧力が低下すると、内蓋５０は元の状態に戻り、弁３３がおねば通し穴３２を開放すると共に、弁５３がおねば戻し穴５２を開放するので、筒状部３１内に溜ったおねばは、おねば通し穴３２、蒸気通路６４、おねば戻し穴５２を経て内釜１７内に戻すことができる。
なお、上記の説明では炊飯工程時における作用について述べたが、むらし工程や保温工程時においても、内釜１７内に発生した蒸気が内蓋５０の内面に付着して水滴となることがあるが、このような場合も水滴は内蓋１７の熱と振動ユニット７０の振動により飛散して蒸発するので、水滴が残ることはない。 When the temperature and pressure in the inner pot 17 decrease after the rice cooking process is finished, the inner lid 50 returns to its original state, and the valve 33 opens the through hole 32 and the valve 53 opens the return hole 52. Therefore, the rice balls accumulated in the cylindrical portion 31 can be returned to the inner pot 17 through the male holes 32, the steam passages 64, and the male return holes 52.
In the above description, the action during the rice cooking process has been described. However, steam generated in the inner pot 17 may adhere to the inner surface of the inner lid 50 and form water droplets even during the unevenness process or the heat retention process. However, even in such a case, the water droplets scatter and evaporate due to the heat of the inner lid 17 and the vibration of the vibration unit 70, so that no water droplets remain.

本実施の形態によれば、蓋ヒータ５７を有し中蓋４０と内蓋５０との間に配設されて、付勢手段４５により常に内蓋５０に当接する内蓋中間部材５５を設けると共に、上蓋４０に低周波電流で駆動される振動ユニット７０を設けたので、炊飯工程時などにおいて、内蓋５０の下面に付着した水滴を確実に除去し、また、振動ユニット７０の振動によりカートリッジ３０内に溜ったおねばを効率よく内釜１７内に戻すことができる。 According to the present embodiment, the inner lid intermediate member 55 that has the lid heater 57 and is disposed between the inner lid 40 and the inner lid 50 and that always contacts the inner lid 50 by the biasing means 45 is provided. Since the vibration unit 70 driven by the low-frequency current is provided on the upper lid 40, water droplets adhering to the lower surface of the inner lid 50 are reliably removed during the rice cooking process, and the cartridge 30 is vibrated by the vibration of the vibration unit 70. It is possible to efficiently return the collected powder into the inner pot 17.

また、炊飯工程時において、内蓋５０等が熱変形してもこれに追従して内蓋中間部材５０の下面の大部分が内蓋５０に当接してその熱を効率よく内蓋５０に伝達することができ、さらに振動ユニット７０による振動が内蓋５０に伝達されるので、簡単かつ低コストの構造で内蓋５０の下面に付着した水滴を除去することができる。
これらにより、蓋体２０を開放したときにご飯の中に水滴が落下することがなく、おねばが内釜１７に戻されることと相俟っておいしいご飯を炊くことができ、電気炊飯器の周囲に水滴が落下することもない。 Further, during the rice cooking process, even if the inner lid 50 or the like is thermally deformed, the lower part of the inner lid intermediate member 50 follows the inner lid 50 and contacts the inner lid 50 to efficiently transfer the heat to the inner lid 50. Furthermore, since the vibration by the vibration unit 70 is transmitted to the inner lid 50, water droplets attached to the lower surface of the inner lid 50 can be removed with a simple and low-cost structure.
As a result, when the lid 20 is opened, water drops do not fall into the rice, and it is possible to cook delicious rice in combination with the rice bowl being returned to the inner pot 17. Water drops do not fall around.

また、内蓋中間部材５５に設けた蓋ヒータ５７には、ご飯を保温するための通常の電力が供給されているので、ご飯が黄変したり硬くなったりして不味くなることもない。 Further, the lid heater 57 provided on the inner lid intermediate member 55 is supplied with normal power for keeping the rice warm, so that the rice does not turn yellow or become hard and does not become unpleasant.

［実施の形態２］
図８は本発明の実施の形態２に係る電気炊飯器の蓋体の要部を示す断面図である。なお、実施の形態１と同じ機能の部分にはこれと同じ符号を付し、説明の一部を省略する。
実施の形態１では、電気炊飯器の蓋体２０を構成する中蓋４０に、複数の係止穴４２を設けると共に、この係止穴４２の内側下面にばね座４４を設け、また、内蓋中間部材５５にこの係止穴４２に係止する係止片５８を設けて、両者の間にばね４５を介製した場合を示したが、本実施の形態は、これら係止穴４２、ばね座４４、ばね４５及び係止片５８を省略したものである。 [Embodiment 2]
FIG. 8: is sectional drawing which shows the principal part of the cover body of the electric rice cooker which concerns on Embodiment 2 of this invention. In addition, the same code | symbol is attached | subjected to the part of the same function as Embodiment 1, and a part of description is abbreviate | omitted.
In the first embodiment, a plurality of locking holes 42 are provided in the inner lid 40 constituting the lid 20 of the electric rice cooker, and a spring seat 44 is provided on the inner lower surface of the locking holes 42. Although the case where the locking piece 58 that locks in the locking hole 42 is provided in the intermediate member 55 and the spring 45 is interposed therebetween is shown, the present embodiment shows that the locking hole 42, the spring The seat 44, the spring 45, and the locking piece 58 are omitted.

本実施の形態は、図８（ａ）に示すように、内蓋中間部材５５の外周に折曲げ部５９を設けて、この折曲げ部５９を中蓋４０の下面に設けた係止リブ４６に係止すると共に、中蓋４０の係止リブ４６の内側に貫通穴４７を設け、また、図８（ｂ）に示すように、振動ユニット７０のケース８５の上面にピン９０を立設したものである。 In the present embodiment, as shown in FIG. 8A, a bent portion 59 is provided on the outer periphery of the inner lid intermediate member 55, and the bent rib 59 is provided on the lower surface of the inner lid 40. And a through hole 47 is provided inside the locking rib 46 of the inner lid 40, and a pin 90 is erected on the upper surface of the case 85 of the vibration unit 70 as shown in FIG. Is.

このように構成した蓋体２０においては、振動ユニット７０は、ピン９０を貫通穴４７に挿入して中蓋４０の上面に固定され、ピン９０先端部を内蓋中間部材５５に当接させる。 In the lid body 20 configured as described above, the vibration unit 70 is fixed to the upper surface of the inner lid 40 by inserting the pin 90 into the through hole 47, and the tip end portion of the pin 90 is brought into contact with the inner lid intermediate member 55.

本実施の形態における炊飯作用は実施の形態１の場合とほぼ同様であるが、炊飯工程又は炊飯工程とむらし工程などにおいて、振動ユニット７０に低周波電流を供給して振動させると、その振動が中蓋４０、内蓋中間部材５５を介して内蓋５０に伝達されると共に、ピン９０を介して直接内蓋中間部材５５に伝達され、これに当接する内蓋５０を振動させる。 The rice cooking action in the present embodiment is almost the same as in the case of the first embodiment. However, when the low frequency current is supplied to the vibration unit 70 and vibrated in the rice cooking process or the rice cooking process and the unevenness process, the vibration is generated. Is transmitted to the inner lid 50 via the inner lid 40 and the inner lid intermediate member 55, and is directly transmitted to the inner lid intermediate member 55 via the pin 90 to vibrate the inner lid 50 in contact therewith.

このように、振動ユニット７０の振動が、中蓋４０、内蓋中間部材５５を介して内蓋５０に伝達され、また、内蓋中間部材５５に直接伝達されて内蓋５０を振動させるので、実施の形態１の場合とほぼ同様に、内蓋５０の内面に付着した水滴を蒸発させて飛散させることができ、また、振動ユニット７０の振動によりカートリッジ３０内に溜ったおねばを効率よく内釜１７に戻すことができる。 As described above, the vibration of the vibration unit 70 is transmitted to the inner lid 50 through the inner lid 40 and the inner lid intermediate member 55, and directly transmitted to the inner lid intermediate member 55 to vibrate the inner lid 50. In substantially the same manner as in the first embodiment, water droplets adhering to the inner surface of the inner lid 50 can be evaporated and scattered, and the waste collected in the cartridge 30 by the vibration of the vibration unit 70 can be efficiently stored. It can be returned to the pot 17.

上記の説明では、炊飯にあたり、炊飯スイッチをＯＮすると同時に振動ユニット７０に低周波電流を供給して駆動する場合を示したが、例えば、操作部１１に設けた振動ユニット７０のＯＮ−ＯＦＦスイッチにより、炊飯工程時又は炊飯工程とむらし工程時、あるいは必要に応じて保温工程時に、手動により振動ユニット７０に通電し、又は自動的に通電するようにしてもよく、さらには、これらの各工程において、内釜１７の温度が所定温度に達したときに、振動ユニット７０に自動的に通電するようにしてもよい。この場合、振動ユニット７０を連続的に駆動してもよく、あるいは所定時間ごとに間欠的に駆動してもよい。 In the above description, in the case of cooking rice, the case where the rice cooking switch is turned on and the low frequency current is supplied to the vibration unit 70 and driven is shown. For example, by the ON-OFF switch of the vibration unit 70 provided in the operation unit 11. The vibration unit 70 may be manually energized or automatically energized at the time of the rice cooking process, at the time of the rice cooking process and the unevenness process, or at the time of the heat retention process, if necessary. In this case, the vibration unit 70 may be automatically energized when the temperature of the inner pot 17 reaches a predetermined temperature. In this case, the vibration unit 70 may be continuously driven, or may be intermittently driven every predetermined time.

また、操作部１１にランプ又はブザーを設け、振動ユニット７０の動作中に表示させるようにしてもよく、これにより、振動ユニット７０の振動状態を容易に確認することができる。
さらに、図には中蓋４０に１個の振動ユニット７０を設けた場合を示したが、中蓋４０の周方向にほぼ等間隔で複数個の振動ユニット７０を設けてもよく、この場合は、各振動ユニット７０を同期して振動させることが必要である。 In addition, a lamp or buzzer may be provided on the operation unit 11 to display during operation of the vibration unit 70, whereby the vibration state of the vibration unit 70 can be easily confirmed.
Furthermore, although the figure shows the case where one vibration unit 70 is provided in the inner lid 40, a plurality of vibration units 70 may be provided at substantially equal intervals in the circumferential direction of the inner lid 40. It is necessary to vibrate each vibration unit 70 synchronously.

また、上記の説明では、図示の電気炊飯器に本発明を実施した場合を示したが、これに限定するものではなく、他の構造の電気炊飯器にも本発明を実施することができる。 Moreover, although the case where this invention was implemented to the illustrated electric rice cooker was shown in said description, it is not limited to this, This invention can be implemented also to the electric rice cooker of another structure.

本発明の実施の形態１に係る電気炊飯器の縦断面図である。It is a longitudinal cross-sectional view of the electric rice cooker which concerns on Embodiment 1 of this invention. 図１の蓋体の拡大図である。It is an enlarged view of the cover body of FIG. 図２の中蓋、内蓋及び内蓋中間部材の一部を断面で示した斜視図である。It is the perspective view which showed a part of intermediate cover, inner cover, and inner cover intermediate member of FIG. 2 in the cross section. 図１の振動ユニットの一例の説明図である。It is explanatory drawing of an example of the vibration unit of FIG. 振動ユニットの駆動手段の説明図である。It is explanatory drawing of the drive means of a vibration unit. 実施の形態１の作用説明図である。FIG. 3 is an operation explanatory diagram of the first embodiment. 実施の形態１の作用説明図である。FIG. 3 is an operation explanatory diagram of the first embodiment. 本発明の実施の形態２に係る電気炊飯器の蓋体の要部を示す断面図及び振動ユニットの斜視図である。It is sectional drawing which shows the principal part of the cover body of the electric rice cooker which concerns on Embodiment 2 of this invention, and a perspective view of a vibration unit. 図８の振動ユニットの説明図である。It is explanatory drawing of the vibration unit of FIG.

符号の説明Explanation of symbols

１炊飯器本体、２本体ケース、４内釜支持ケース、５コイル台、６誘導加熱コイル（加熱手段）、１１操作部、１２制御部、１６ヒンジ部、１７内釜、１８フランジ、２０蓋体、２４上蓋、２７弁室、３０カートリッジ、３１筒状体、３２おねば通し穴、３４通気孔、３５蒸気排出口、４０中蓋、４２係止穴、４５ばね（付勢手段）、５０内蓋、５２おねば戻し穴、５５内蓋中間部材、５７蓋ヒータ、５８係止片、６０内筒、６２弁孔、６３調整ボール、７０振動ユニット、７１振動発生部、８５ケース、９０ピン。 DESCRIPTION OF SYMBOLS 1 Rice cooker main body, 2 Main body case, 4 Inner hook support case, 5 Coil stand, 6 Induction heating coil (heating means), 11 Operation part, 12 Control part, 16 Hinge part, 17 Inner pot, 18 Flange, 20 Lid , 24 Top cover, 27 Valve chamber, 30 Cartridge, 31 Cylindrical body, 32 Threaded through hole, 34 Vent hole, 35 Steam outlet, 40 Inner lid, 42 Locking hole, 45 Spring (biasing means), 50 Lid, 52 general return hole, 55 inner lid intermediate member, 57 lid heater, 58 locking piece, 60 inner cylinder, 62 valve hole, 63 adjustment ball, 70 vibration unit, 71 vibration generator, 85 case, 90 pin.

Claims

調理物が入れられる内釜と、上面が開口されて前記内釜が着脱自在に収容される炊飯器本体と、前記内釜の加熱手段と、該加熱手段を制御する制御手段と、前記炊飯器本体の開口部を開閉する蓋体とを備え、
前記蓋体に、低周波電流で駆動されて機械的に振動する振動ユニットを設けたことを特徴とする電気炊飯器。 An inner pot in which a food is put, a rice cooker main body having an upper surface opened so that the inner pot is removably accommodated, heating means for the inner pot, control means for controlling the heating means, and the rice cooker A lid for opening and closing the opening of the main body,
An electric rice cooker comprising a vibration unit that is driven by a low-frequency current and mechanically vibrates on the lid.

前記蓋体を、下面が開口した上蓋、該上蓋の下面開口部内に固定された中蓋、該中蓋に着脱可能に装着された内蓋、及び上面に蓋ヒータを有し前記中蓋と内蓋との間に配設されてその一部又はほぼ全面が前記内蓋に当接する内蓋中間部材によって構成し、前記中蓋に該中蓋に対してほぼ垂直方向に振動する振動ユニットを設けたことを特徴とする請求項１記載の電気炊飯器。 The lid includes an upper lid having a lower surface opened, an inner lid fixed in the lower surface opening of the upper lid, an inner lid detachably attached to the inner lid, and a lid heater on the upper surface. A part or almost the entire surface of the inner lid is disposed between the inner lid and the inner lid, and a vibration unit that vibrates in a direction substantially perpendicular to the inner lid is provided on the inner lid. The electric rice cooker of Claim 1 characterized by the above-mentioned.

前記中蓋中間部材を該中蓋中間部材に設けられた複数の係止片により前記中蓋に所定の範囲で上下動可能に装着すると共に、前記中蓋と内蓋中間部材との間に該内蓋中間部材を前記内蓋側に付勢する付勢手段を設けたことを特徴とする請求項２記載の電気炊飯器。 The intermediate lid intermediate member is mounted on the intermediate lid so as to be vertically movable within a predetermined range by a plurality of locking pieces provided on the intermediate lid intermediate member, and the intermediate lid intermediate member is interposed between the intermediate lid and the inner lid intermediate member. The electric rice cooker according to claim 2, further comprising an urging means for urging the inner lid intermediate member toward the inner lid.

前記蓋体を、下面が開口した上蓋、外周側に貫通穴を有し前記上蓋の下面開口部内に固定された中蓋、上面に蓋ヒータを有し前記中蓋に固定された内蓋中間部材、及び該内蓋中間部材の下面に当接し前記中蓋に着脱可能に装着された内蓋によって構成し、前記振動ユニットに設けたピンを前記中蓋の貫通穴に挿入して該振動ユニットを前記中蓋の上面に取付けて、前記ピンの先端部を前記内蓋中間部材に当接したことを特徴とする請求項１記載の電気炊飯器。 The lid includes an upper lid having an opening on the lower surface, an inner lid having a through hole on the outer peripheral side and fixed in the lower surface opening of the upper lid, and an inner lid intermediate member having a lid heater on the upper surface and fixed to the inner lid And an inner lid that is in contact with the lower surface of the inner lid intermediate member and is detachably attached to the inner lid, and a pin provided on the vibration unit is inserted into a through hole of the inner lid to The electric rice cooker according to claim 1, wherein the electric rice cooker is attached to an upper surface of the inner lid, and a tip end portion of the pin is brought into contact with the inner lid intermediate member.

前記蓋体に、上部に蒸気排出口を有し炊飯工程時に下部が前記内釜と連通し、該内釜内に発生した蒸気を排出しおねばを溜めるカートリッジを着脱可能に設けたことを特徴とする請求項１〜４のいずれかに記載の電気炊飯器。 The lid has a steam outlet at the upper part, and the lower part communicates with the inner pot at the time of the rice cooking process, and a cartridge for discharging steam generated in the inner pot and storing a rice bowl is detachably provided. The electric rice cooker according to any one of claims 1 to 4.

前記振動ユニットは、電磁石、磁性材料からなり上端部に前記電磁石の鉄心と対向する永久磁石を有し、軸方向の中央部近傍に支持板が設けられた連結用部材、非磁性材からなり前記電磁石と連結用部材の支持板との間、及び該支持板の下部に配設された第１、第２の弾性体からなる振動発生部と、該振動発生部が収納されるケースとからなり、前記振動発生部をケースに収納したときに前記第１、第２の弾性体に付勢力が付与されるように構成したことを特徴とする請求項１〜５のいずれかに記載の電気炊飯器。 The vibration unit is made of an electromagnet, a magnetic material, has a permanent magnet facing the iron core of the electromagnet at the upper end, and is made of a coupling member provided with a support plate near the center in the axial direction, a nonmagnetic material, It comprises a vibration generating portion made of first and second elastic bodies disposed between the electromagnet and the connecting member support plate and below the support plate, and a case in which the vibration generating portion is housed. The electric rice cooker according to any one of claims 1 to 5, wherein an urging force is applied to the first and second elastic bodies when the vibration generating unit is housed in a case. vessel.

前記振動ユニットを駆動する低周波電流が、交流全波電流又は交流半波電流であることを特徴とする請求項１〜６のいずれかに記載の電気炊飯器。 The electric rice cooker according to any one of claims 1 to 6, wherein the low frequency current for driving the vibration unit is an alternating current full wave current or an alternating current half wave current.

前記振動ユニットを、炊飯工程及び必要に応じてむらし工程、保温工程の際に駆動することを特徴とする請求項１〜７のいずれかに記載の電気炊飯器。 The electric rice cooker according to any one of claims 1 to 7, wherein the vibration unit is driven during a rice cooking step and, if necessary, a smoothing step and a heat retention step.

前記振動ユニットを、連続的若しくは間欠的又は振動の強弱を変えて駆動することを特徴とする請求項１〜８のいずれかに記載の電気炊飯器。 The electric rice cooker according to any one of claims 1 to 8, wherein the vibration unit is driven continuously or intermittently or with varying vibration intensity.