JP3912524B2

JP3912524B2 - rice cooker

Info

Publication number: JP3912524B2
Application number: JP2002357622A
Authority: JP
Inventors: 健太郎橋元
Original assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Priority date: 2002-12-10
Filing date: 2002-12-10
Publication date: 2007-05-09
Anticipated expiration: 2022-12-10
Also published as: JP2004187826A

Description

【０００１】
【発明の属する技術分野】
本発明は、蒸気口ユニットを備えた炊飯器に係り、より詳しくは、蒸気口ユニット内に蒸気ガイド壁を設け、このガイド壁をらせん状に構成した炊飯器に関するものである。
【０００２】
【従来の技術】
従来の炊飯器は、炊飯時に炊飯器内の蒸気を外部に放出させる蒸気放出装置を備えており、この蒸気放出装置の蒸気口ユニットは、上面が開口して弁機構を有する蒸気口ケースと、蒸気口ケースの上面開口部に設けた蒸気口カバーとで構成され、蒸気口カバーの上面には、弁機構の真上の位置からその側方に変位した部分において蒸気孔が形成されている（例えば、特許文献１参照）。
【０００３】
【特許文献１】
特開平７−２３６５６７号公報（第２〜５頁、図１）
【０００４】
【発明が解決しようとする課題】
従来の炊飯器では、その蒸気口ユニットの蒸気経路は、実質直線的であり、蒸気とともに噴出するおねばの勢いを抑えるには蒸気口ユニットの容積を最大限有効に活用しているとはいいがたく、このため、火力を抑制し、うまみの素であるおねばの噴出量を抑えて炊飯する必要があった。
【０００５】
また、蒸気とともに噴出するおねばの勢いを抑えるために、蒸気の経路長を長くし、蒸気口ユニットの外形を大きくしてもよいが、炊飯器を構成するうえでの大きな寸法的制約があり、またデザインの面でも大きな制約があった。この場合、加熱手段を制御しておねばの噴出量を抑えることも可能だが、ご飯の美味しさを犠牲にすることになってしまう。
【０００６】
さらに、蒸気口ユニットに蒸気やおねばの障壁を設け場合は、その間隙に炊飯を繰り返すうちにおねばが乾燥した粕が付着するので、定期的に清掃を施さねばならないが、その間隙を清掃するためのスポンジ等の清掃器具が入り込みづらく、清掃は容易ではなかった。
【０００７】
本発明は、上記のような課題を解決するためになされたもので蒸気口ユニット自体を小さくし、寸法的制約、デザイン的制約を少なくして、うまみの素であるおねばを内釜内に戻して美味しくご飯を炊くことができ、また、蒸気口ユニットの清掃性を向上させた炊飯器を提供することを目的とする。
【０００８】
【課題を解決するための手段】
本発明は、上面に開口部を有する炊飯器本体に、内釜と、内釜を加熱する加熱手段と、開口部を開閉自在に軸支する蓋体とを備え、蓋体に一端が外気に他端が前記内釜に連通する連通穴が設けられ、連通穴の外気側に位置しており一端に前記連通穴に連通する連通部を有し他端に蒸気排出口を有する蒸気口ユニットを備えた炊飯器であって、蒸気口ユニットが開閉自在な下ケースと上ケースとからなり、これらの上下のケースが閉じられたときに内部の両ケースの間に排気経路部が形成されるように構成され、蒸気口ユニット内の排気経路部にらせん状のガイド壁が設けられるとともに、ガイド壁の中央部付近がほぼＯ状に形成され、ガイド壁によって、蒸気入口を備えた外周壁端部から始まり外周壁に沿って湾曲し蒸気排出口を備えたほぼ中央部に至って収束するらせん状の通路が構成されるとともに、中央部付近に至るまでの通路上にこの通路方向にほぼ直交して流路幅を狭める障壁が設けられ、さらにほぼＯ状に形成した中央部付近の壁部に蒸気排出口に至る開口部が設けられたものである。
【０００９】
【発明の実施の形態】
［実施の形態１］
図１は本発明の実施の形態１に係る炊飯器の要部を拡大した縦断面図、図２は本発明の実施の形態１に係る炊飯器の縦断面図である。図において、炊飯器本体１は上部に開口部を有しており、この上部開口部は、上蓋３、下蓋４及び内蓋５からなり、ヒンジ７によって支持された蓋体２によって開閉される。上蓋３のほぼ中央部には凹状の収容部６が設けられており、収容部６には蒸気口ユニット１５（後に詳述）が着脱自在に取り付けられている。
【００１０】
この収容部６の底部には貫通穴８が形成され、その直下には下蓋４に設けた連結穴９が位置しており、これらの貫通穴８及び連結穴９によって連通穴が形成され、この連通穴に蒸気口ユニット１５の連結部９１が嵌入する。また、連結穴９の直下には内蓋５の凹部１０が形成されており、この凹部１０には複数の蒸気孔１１が設けられている。
炊飯器本体１内には有底筒状の内釜１２が収容され、電磁誘導コイル１３が内釜１２を発熱して炊飯する。
【００１１】
蒸気口ユニット１５はヒンジ１６により開閉自在な下ケース１７と上ケース１８から構成されている。下ケース１７はほぼ皿状に形成されており、その底部１７ａの前側には円筒状の連結部１９が突設され、蓋体２の貫通穴８及び連結穴９にシール部材４ａを介して挿入される。連結部１９の前側には下部に蒸気入口２１が開口する案内筒２０が立設されており、内蓋５の凹部１０に設けた蒸気孔１１を介して内釜１２に連通し、内釜１２からのおねばを含む蒸気を蒸気ユニット１５内に導く。
【００１２】
連結部１９内には、おねばが溜まる溜り凹部２２が形成されており、溜り凹部２２の底部には連通口２３が設けられ、その周縁部には、蒸気口ユニット１５内と内釜１２とを連通する複数のおねば戻し穴２４（図４（ｂ）参照）が設けられている。このおねば戻し穴２４は連通口２３に上下動可能に設けられた開閉弁２５により開閉される。
【００１３】
次に、蒸気口ユニット１５の内部構成を以下に詳述する。図３（ａ）、（ｂ）はそれぞれ蒸気口ユニット１５の上ケース１８の内側斜視図及び外側斜視図であり、図４（ａ）、（ｂ）は、それぞれ蒸気口ユニット１５の下ケース１７の内側斜視図及び外側斜視図である。
【００１４】
図３において、蒸気口ユニット１５の上ケース１８内にはらせん状の上ケースガイド壁３０が設けられて、蒸気経路３１の一部を構成している。上ケースガイド壁３０は、上ケース１８の前側側面１８ａから始まり、ほぼＳ字状に屈曲した上部第１通路３２を形成した後、ほぼ逆Ｃ字状に屈曲して上部第２通路３３を形成し、上ケース１８のほぼ中央部付近に至り、蒸気排出口３５を備えた上部中央通路３４を形成する。このらせん形状の通路はほぼ１回転するが、これに限定するものではない。
【００１５】
この上ケースガイド壁３０の上部第２通路３３には、通路にほぼ直交して、上ケースガイド壁３０よりも低い障壁３６が設けられている。なお、障壁３６を第２の通路３３に設けた場合を示したが、これに限定するものではなく、蒸気経路３１内であればどこでもよく、またその数も限定しない。
【００１６】
また、図４において、蒸気口ユニット１５の下ケース１７内にはらせん状の下ケースガイド壁４０が設けられて蒸気経路３１の一部を構成している。下ケースガイド壁４０は、案内筒２０の下流側に位置する壁面を第１のガイド壁４０ａとし、下ケース１７内の中央部付近に位置する壁面を第２のガイド壁４０ｂとしている。
【００１７】
第１のガイド壁４０ａは一端が前側側面１７ｂから始まるほぼＬ字状をなして下部第１通路４２を形成し、第２のガイド壁４０ｂは前側がつぶれた形状のほぼＯ字状をなし、その周囲には下部第２通路４３を形成すると共に、その内部には下部中央通路４４
を構成し、さらに、第２のガイド壁４０ｂの前側下部には開口部４５が形成されている。
そして、上ケース１８に設けたらせん状の上ケースガイド壁３０と下ケースガイド壁４０の一部が嵌合して蒸気口ユニット１５を構成しており、蒸気おねばの案内筒２０から蒸気排出口３５に至るらせん形状の蒸気経路３１を形成する。
【００１８】
上記のように構成した蒸気口ユニット１５の取り付け手順について説明する。蒸気口ユニット１５は、図１に示すように、蓋体２の収容部６内に収容され、その連結部１９を、上蓋３に設けた貫通穴８から下蓋４に設けた連結穴９に、シール部材４ａを介して挿入し、取り付ける。このとき、連結部１９の下面は、内蓋５に設けた凹部１０と対向する。
【００１９】
次に、炊飯器の蒸気口ユニット１５の作用を説明する。内釜１２内に米等を入れて炊飯すると、蒸気及びおねばが、内蓋５の蒸気孔１１を通り蒸気口ユニット１５に設けた案内筒２０の蒸気入口２１から蒸気口ユニット１５内に入り、上ケースガイド壁３０と下ケースガイド壁４０によってらせん状に形成された蒸気経路３１を通って、蒸気排出口３５側に向かう。
【００２０】
すなわち、蒸気及びおねばは、図３、図４に示すように、下ケース１７の案内筒２０より下部、上部の第１通路４２，３２に入って図１のイ方向に進み、下部、上部の第２通路４３，３３をロ方向に進み、下部、上部中央通路４４，３４をハ方向に進んで、上ケース１８の蒸気排出口３５よりニ方向に排出される。
【００２１】
この際、上ケースガイド壁３０及び下ケースガイド壁４０によって形成される蒸気経路３１は長距離にわたって確保されているので、この間に、蒸気の噴出する勢いを抑えて蒸気とおねばを分離する。こうして、蒸気は蒸気排出口３５より外部に排出されるが、溜まり凹部２２内に溜まったおねばは、おねば戻し穴２３を通って内釜１２内に戻る。
【００２２】
このように、蒸気口ユニット１５の上、下ケース１８，１７に上ケースガイド壁３０と下ケースガイド壁４０を設けて蒸気経路３１を形成したので、仮に従来と同一面積であっても、従来よりも蒸気経路３１を長く確保して、蒸気の噴出する勢いを抑えることができ、蒸気とおねばを分離して蒸気のみを確実に炊飯器外に排出し、吹きこぼれを起こさず、うまみの素であるおねばを逃がすことなく、美味しいご飯を炊くことができる。また、この蒸気経路３１内に障壁３６を設けたので、蒸気の勢いを押さえることができ、おねばとの分離をより効率よく行うことができる。
【００２３】
［実施の形態２］
本実施の形態は、実施の形態１に示した蒸気口ユニット１５において、その内底部１７ａを、蒸気入り口２１からおねば戻し穴２３方向に、らせん状の上、下ケースガイド壁３０，４０によって形成された蒸気経路３１に沿って、下方向に向って傾斜させるようにしたものである。
こうして、蒸気口ユニット１５内に溜まるおねばの流れが良くなり、内釜１２の内圧が下がった時点で開閉弁２５を開放し、蒸気口ユニット１５内に溜まった美味しさの素であるおねばと蒸気を効率よく確実に内釜１２内に流し戻すことができ、美味しいご飯を炊くことができる。
【００２４】
［実施の形態３］
本実施の形態は、実施の形態１に示した蒸気口ユニット１５において、らせん状の上、下ケースガイド壁３０，４０を、熱伝導材からなる金属を用いて形成した。
こうして、蒸気、おねばの温度を短時間で下げることができるので、蒸気の圧力を下げるのに効果を奏し、おねばの吹きこぼれの抑止効果が期待でき、おねばと蒸気を効率よく分離することができる。
【００２５】
［実施の形態４］
図５は本発明の実施の形態４に係る蒸気口ユニット１５の分解斜視図である。本実施の形態では、実施の形態１に示した蒸気口ユニット１５において、らせん状のガイド壁を、図６に示すように、上ケース１８及び下ケース１７に自在に着脱できるらせん状のカートリッジガイド壁４６によって構成したものである。そして、蒸気口ユニット１５の上ケース１８の天面にはらせん状のカートリッジガイド壁４６の上部４６ａが嵌合する上溝４７が設けられ、下ケース１７の底面にはらせん状のカートリッジガイド壁４６の下部４６ｂが嵌合する下溝４８が設けられている。こうして、らせん状のカートリッジガイド壁４６の上下部４６ａ，４６ｂがそれぞれ上溝４７、下溝４８に嵌合することで、カートリッジガイド壁４６は蒸気口ユニット１５に着脱自在に取付けられる。
【００２６】
炊飯を繰り返すうちに蒸気口ユニット１５内におねばの粕が溜まるが、これを清掃する際、ヒンジ１６を軸に上ケース１８を下ケース１７から開放すれば、指やスポンジ等の清掃器具を容易に隙間に入れて、簡単、清潔に蒸気口ユニット１５を清掃することができ、上手に掃除が行えないという不満を解決することができる。
【００２７】
【発明の効果】
以上の説明から明らかなように、本発明は、上面に開口部を有する炊飯器本体に、内釜と、内釜を加熱する加熱手段と、開口部を開閉自在に軸支する蓋体とを備え、蓋体に一端が外気に他端が前記内釜に連通する連通穴が設けられ、連通穴の外気側に位置しており一端に前記連通穴に連通する連通部を有し他端に蒸気排出口を有する蒸気口ユニットを備えた炊飯器であって、蒸気口ユニットが開閉自在な下ケースと上ケースとからなり、これらの上下のケースが閉じられたときに内部の両ケースの間に排気経路部が形成されるように構成され、蒸気口ユニット内の排気経路部にらせん状のガイド壁が設けられるとともに、ガイド壁の中央部付近がほぼＯ状に形成され、ガイド壁によって、蒸気入口を備えた外周壁端部から始まり外周壁に沿って湾曲し蒸気排出口を備えたほぼ中央部に至って収束するらせん状の通路が構成されるとともに、中央部付近に至るまでの通路上にこの通路方向にほぼ直交して流路幅を狭める障壁が設けられ、さらにほぼＯ状に形成した中央部付近の壁部に蒸気排出口に至る開口部が設けられたので、蒸気経路を従来より長く確保することができる。このため、蒸気口ユニットの外形寸法を小さくして、炊飯器を設計するうえでの寸法的制約、デザイン的制約を少なくすることができ、美味しいご飯を炊くことができる。
【図面の簡単な説明】
【図１】本発明の実施の形態１に係る炊飯器の要部の縦断面図である。
【図２】本発明の実施の形態１に係る炊飯器の縦断面図である。
【図３】図１に示した蒸気口ユニットの上ケースの内側斜視図及び外側斜視図である。
【図４】図１に示した蒸気口ユニットの下ケースの内側斜視図及び外側斜視図である。
【図５】本発明の実施の形態４に係る炊飯器の蒸気口ユニットの分解斜視図である。
【図６】実施の形態４のカートリッジガイド壁の斜視図である。
【符号の説明】
１炊飯器本体、２蓋体、３上蓋、４下蓋、５内蓋、８，９連通穴、１１蒸気孔、１２内釜、１３電磁誘導コイル、１５蒸気口ユニット、１７下ケース、１８上ケース、２０案内筒、２１蒸気入り口、２４おねば戻し穴、３０，４０ガイド壁、３１蒸気経路、３５蒸気排出口、３６障壁、４６カートリッジガイド壁、４７，４８溝。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rice cooker equipped with a steam port unit, and more particularly to a rice cooker in which a steam guide wall is provided in the steam port unit and the guide wall is formed in a spiral shape.
[0002]
[Prior art]
A conventional rice cooker includes a steam discharge device that discharges steam inside the rice cooker to the outside during rice cooking, and the steam port unit of this steam discharge device has a steam port case having a valve mechanism with an open top surface, A steam hole cover is provided at the upper surface opening of the steam hole case, and a steam hole is formed on the upper surface of the steam hole cover at a portion displaced laterally from a position directly above the valve mechanism ( For example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-236567 (pages 2 to 5, FIG. 1)
[0004]
[Problems to be solved by the invention]
In a conventional rice cooker, the steam path of the steam port unit is substantially linear, and it is said that the volume of the steam port unit is utilized to the maximum extent in order to suppress the momentum that spouts along with the steam. For this reason, it was necessary to cook rice while suppressing the thermal power and suppressing the amount of rice balls that are the source of umami.
[0005]
Moreover, in order to suppress the momentum of the spout that spouts with steam, the steam path length may be lengthened and the outer shape of the steam outlet unit may be increased, but there are significant dimensional constraints in configuring the rice cooker. Also, there were significant restrictions in terms of design. In this case, it is possible to control the amount of jetting by controlling the heating means, but at the expense of the deliciousness of the rice.
[0006]
In addition, when a steam or unit is provided in the steam outlet unit, the rice cake will dry and the dried rice cake will adhere to the gap as it is repeatedly cooked, so it must be cleaned regularly. Cleaning tools such as sponges are difficult to enter, and cleaning is not easy.
[0007]
The present invention has been made to solve the above-described problems. The steam port unit itself is made smaller, the dimensional restrictions and the design restrictions are reduced, and the rice cake that is the source of umami is placed in the inner pot. An object of the present invention is to provide a rice cooker that can return and cook rice deliciously and that has improved the cleanability of the steam outlet unit.
[0008]
[Means for Solving the Problems]
The present invention comprises a rice cooker body having an opening on the upper surface, an inner pot, a heating means for heating the inner pot, and a lid that pivotally supports the opening so that the opening can be freely opened and closed. the other end communicating hole is provided communicating with the kiln, the steam inlet unit having a vapor outlet to the outside air is located on the side of the other end has a communication portion for communicating with the communication hole at one end of the communication hole A rice cooker equipped with a lower case and an upper case whose steam opening unit can be freely opened and closed, and when these upper and lower cases are closed, an exhaust path portion is formed between the inner cases. A spiral guide wall is provided in the exhaust passage portion in the steam port unit, and the vicinity of the center portion of the guide wall is formed in an approximately O shape, and the end portion of the outer peripheral wall provided with the steam inlet by the guide wall With a steam outlet that curves around the outer wall starting from A spiral path that converges to the central part is configured, and a barrier that narrows the width of the flow path is provided on the path up to the vicinity of the center part so as to be almost perpendicular to the direction of the path. The wall near the center is provided with an opening reaching the steam outlet .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
[Embodiment 1]
FIG. 1 is an enlarged longitudinal sectional view of a main part of the rice cooker according to Embodiment 1 of the present invention, and FIG. 2 is a longitudinal sectional view of the rice cooker according to Embodiment 1 of the present invention. In the figure, the rice cooker main body 1 has an opening at the top, and this upper opening is composed of an upper lid 3, a lower lid 4 and an inner lid 5, and is opened and closed by a lid 2 supported by a hinge 7. . A concave housing portion 6 is provided at a substantially central portion of the upper lid 3, and a steam port unit 15 (detailed later) is detachably attached to the housing portion 6.
[0010]
A through hole 8 is formed at the bottom of the housing portion 6, and a connecting hole 9 provided in the lower lid 4 is located immediately below the through hole 8. A communicating hole is formed by the through hole 8 and the connecting hole 9, The connecting portion 91 of the steam port unit 15 is fitted into the communication hole. Further, a recess 10 of the inner lid 5 is formed immediately below the connecting hole 9, and a plurality of vapor holes 11 are provided in the recess 10.
A bottomed cylindrical inner pot 12 is accommodated in the rice cooker body 1, and the electromagnetic induction coil 13 generates heat to cook the inner pot 12.
[0011]
The steam port unit 15 includes a lower case 17 and an upper case 18 that can be opened and closed by a hinge 16. The lower case 17 is formed in a substantially dish shape, and a cylindrical connecting portion 19 projects from the front side of the bottom portion 17a, and is inserted into the through hole 8 and the connecting hole 9 of the lid body 2 through the seal member 4a. Is done. A guide cylinder 20 having a steam inlet 21 opened in the lower part is erected on the front side of the connecting portion 19, and communicates with the inner hook 12 through the steam hole 11 provided in the concave portion 10 of the inner lid 5. The steam including the rice cake is introduced into the steam unit 15.
[0012]
In the connecting portion 19, there is formed a reservoir recess 22 in which a rice bowl is stored. A communication port 23 is provided at the bottom of the reservoir recess 22, and a peripheral portion thereof includes a steam port unit 15, an inner hook 12, Are provided with a plurality of return holes 24 (see FIG. 4B). This general return hole 24 is opened and closed by an on-off valve 25 provided at the communication port 23 so as to be movable up and down.
[0013]
Next, the internal configuration of the steam port unit 15 will be described in detail below. 3A and 3B are an inner perspective view and an outer perspective view of the upper case 18 of the steam port unit 15, respectively. FIGS. 4A and 4B are lower cases 17 of the steam port unit 15, respectively. They are an inner side perspective view and an outer side perspective view.
[0014]
In FIG. 3, a spiral upper case guide wall 30 is provided in the upper case 18 of the steam port unit 15 and constitutes a part of the steam path 31. The upper case guide wall 30 starts from the front side surface 18a of the upper case 18 and forms an upper first passage 32 bent in a substantially S shape, and then bent in a substantially inverted C shape to form an upper second passage 33. Then, an upper central passage 34 having a steam outlet 35 is formed so as to reach the vicinity of the central portion of the upper case 18. The spiral passage rotates almost once, but is not limited thereto.
[0015]
The upper second passage 33 of the upper case guide wall 30 is provided with a barrier 36 that is substantially perpendicular to the passage and lower than the upper case guide wall 30. In addition, although the case where the barrier 36 was provided in the 2nd channel | path 33 was shown, it will not be limited to this, anywhere in the vapor | steam path | route 31 may be sufficient, and the number is not limited.
[0016]
In FIG. 4, a spiral lower case guide wall 40 is provided in the lower case 17 of the steam port unit 15 to constitute a part of the steam path 31. The lower case guide wall 40 has a wall surface located on the downstream side of the guide tube 20 as a first guide wall 40a and a wall surface located near the center in the lower case 17 as a second guide wall 40b.
[0017]
The first guide wall 40a is substantially L-shaped with one end starting from the front side surface 17b to form the lower first passage 42, and the second guide wall 40b is substantially O-shaped with the front side collapsed, A lower second passage 43 is formed in the periphery thereof, and a lower central passage 44 is formed in the lower second passage 43.
Further, an opening 45 is formed in the lower part on the front side of the second guide wall 40b.
A part of the spiral upper case guide wall 30 and the lower case guide wall 40 provided in the upper case 18 is fitted to form the steam port unit 15, and the steam exhaust guide pipe 20 is configured to discharge steam. A spiral steam path 31 leading to the outlet 35 is formed.
[0018]
A procedure for attaching the steam port unit 15 configured as described above will be described. As shown in FIG. 1, the steam port unit 15 is accommodated in the accommodating portion 6 of the lid body 2, and the connecting portion 19 is changed from the through hole 8 provided in the upper lid 3 to the connecting hole 9 provided in the lower lid 4. And inserted through the seal member 4a. At this time, the lower surface of the connecting portion 19 faces the recess 10 provided in the inner lid 5.
[0019]
Next, the operation of the steam port unit 15 of the rice cooker will be described. When rice or the like is put into the inner pot 12 and cooked, steam and rice balls pass through the steam hole 11 of the inner lid 5 and enter the steam port unit 15 from the steam inlet 21 of the guide tube 20 provided in the steam port unit 15. The steam passes through a steam path 31 formed in a spiral shape by the upper case guide wall 30 and the lower case guide wall 40 and travels toward the steam outlet 35.
[0020]
That is, as shown in FIGS. 3 and 4, the steam and rice balls enter the first passages 42 and 32 at the lower and upper portions of the guide tube 20 of the lower case 17 and proceed in the direction B in FIG. The second passages 43 and 33 are advanced in the B direction, the lower and upper central passages 44 and 34 are advanced in the C direction, and are discharged in two directions from the steam discharge port 35 of the upper case 18.
[0021]
At this time, since the steam path 31 formed by the upper case guide wall 30 and the lower case guide wall 40 is secured over a long distance, during this time, the steam is prevented from being ejected and the steam and the tongue are separated. In this way, the steam is discharged to the outside through the steam discharge port 35, but the rice cake that has accumulated in the accumulation recess 22 returns to the inner pot 12 through the return hole 23.
[0022]
As described above, since the steam path 31 is formed by providing the upper case guide wall 30 and the lower case guide wall 40 in the lower cases 18 and 17 on the steam port unit 15, even if the area is the same as the conventional case, The steam path 31 can be secured longer than the steam, and the momentum of the steam can be suppressed, the steam and the rice bowl are separated, and only the steam is reliably discharged out of the rice cooker. You can cook delicious rice without missing a rice ball. Further, since the barrier 36 is provided in the steam path 31, it is possible to suppress the momentum of the steam, and it is possible to more efficiently perform separation from the rice pad.
[0023]
[Embodiment 2]
In the present embodiment, in the steam port unit 15 shown in the first embodiment, the inner bottom portion 17a is spirally formed from the steam inlet 21 toward the return hole 23 by the lower case guide walls 30 and 40. It is made to incline downward along the formed steam path 31.
In this way, the flow of the stomach that accumulates in the steam port unit 15 is improved, and when the internal pressure of the inner pot 12 decreases, the on-off valve 25 is opened, and it is a source of deliciousness that has accumulated in the steam port unit 15. The steam can be efficiently and surely poured back into the inner pot 12, and delicious rice can be cooked.
[0024]
[Embodiment 3]
In the present embodiment, in the steam port unit 15 shown in the first embodiment, the upper and lower case guide walls 30 and 40 are formed using a metal made of a heat conductive material.
In this way, the temperature of the steam and rice bowl can be lowered in a short time, which is effective in reducing the pressure of the steam, and can be expected to suppress the spilling of the rice bowl, effectively separating the rice cake and steam. Can do.
[0025]
[Embodiment 4]
FIG. 5 is an exploded perspective view of the steam port unit 15 according to Embodiment 4 of the present invention. In the present embodiment, in the steam port unit 15 shown in the first embodiment, a spiral cartridge guide can be freely attached to and detached from the upper case 18 and the lower case 17 as shown in FIG. This is constituted by the wall 46. An upper groove 47 into which the upper portion 46 a of the spiral cartridge guide wall 46 is fitted is provided on the top surface of the upper case 18 of the steam port unit 15, and the spiral cartridge guide wall 46 of the lower case 17 is provided on the bottom surface. A lower groove 48 into which the lower portion 46b is fitted is provided. Thus, the upper and lower portions 46a and 46b of the spiral cartridge guide wall 46 are fitted into the upper groove 47 and the lower groove 48, respectively, so that the cartridge guide wall 46 is detachably attached to the steam port unit 15.
[0026]
While repeating rice cooking, sticky rice cake accumulates in the steam opening unit 15. When cleaning this, if the upper case 18 is opened from the lower case 17 around the hinge 16, a cleaning tool such as a finger or sponge is used. The steam port unit 15 can be easily and cleanly put in the gap, and the dissatisfaction that the cleaning cannot be performed well can be solved.
[0027]
【The invention's effect】
As is clear from the above description, the present invention provides a rice cooker body having an opening on the upper surface, an inner pot, a heating means for heating the inner pot, and a lid that pivotally supports the opening so as to be opened and closed. The lid is provided with a communication hole having one end connected to the outside air and the other end communicating to the inner hook, and is located on the outside air side of the communication hole and has a communication portion communicating with the communication hole at one end. A rice cooker equipped with a steam outlet unit having a steam outlet, comprising a lower case and an upper case that can be freely opened and closed, and when these upper and lower cases are closed, An exhaust path portion is formed in the exhaust path portion, and a spiral guide wall is provided in the exhaust path portion in the steam port unit, and the vicinity of the center portion of the guide wall is formed in an approximately O shape. Starting from the end of the outer wall with the steam inlet, along the outer wall A spiral passage that is curved and has a vapor outlet and converges to a substantially central portion is configured, and a barrier that narrows the flow passage width substantially perpendicular to the passage direction is formed on the passage leading to the vicinity of the central portion. Further, since the opening portion extending to the steam outlet is provided in the wall portion in the vicinity of the central portion that is provided in a substantially O shape , the steam path can be secured longer than the conventional one. For this reason, the external dimension of a steam-mouth unit can be made small, the dimensional restrictions and design restrictions in designing a rice cooker can be reduced, and delicious rice can be cooked.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a main part of a rice cooker according to Embodiment 1 of the present invention.
FIG. 2 is a longitudinal sectional view of the rice cooker according to Embodiment 1 of the present invention.
FIG. 3 is an inner perspective view and an outer perspective view of an upper case of the steam port unit shown in FIG.
4 is an inner perspective view and an outer perspective view of the lower case of the steam port unit shown in FIG. 1. FIG.
FIG. 5 is an exploded perspective view of a steam port unit of a rice cooker according to Embodiment 4 of the present invention.
6 is a perspective view of a cartridge guide wall according to Embodiment 4. FIG.
[Explanation of symbols]
1 Rice cooker body, 2 lid body, 3 upper lid, 4 lower lid, 5 inner lid, 8, 9 communication hole, 11 steam hole, 12 inner pot, 13 electromagnetic induction coil, 15 steam port unit, 17 lower case, 18 upper Case, 20 guide tube, 21 steam inlet, 24 screw return hole, 30, 40 guide wall, 31 steam path, 35 steam outlet, 36 barrier, 46 cartridge guide wall, 47, 48 groove.

Claims

A rice cooker body having an opening on the upper surface, provided with an inner pot, a heating means for heating the inner pot, and a lid that pivotally supports the opening so as to be opened and closed.
The lid body is provided with a communication hole having one end connected to the outside air and the other end communicating to the inner hook, and is located on the outside air side of the communication hole and has a communication portion communicating with the communication hole at one end. A rice cooker equipped with a steam outlet unit having a steam outlet,
The steam port unit consists of a lower case and an upper case that can be freely opened and closed, and when these upper and lower cases are closed, an exhaust path portion is formed between the inner cases,
A spiral guide wall is provided in the exhaust path portion in the steam port unit, and the vicinity of the center portion of the guide wall is formed in an approximately O shape. A spiral path is formed which begins to curve along the outer peripheral wall and converges to a substantially central portion with a steam outlet.
A barrier for narrowing the flow path width is provided on the passage up to the vicinity of the central portion so as to be substantially orthogonal to the direction of the passage, and the wall near the central portion formed in an approximately O shape reaches the steam discharge port. A rice cooker characterized in that an opening is provided.

The rice cooker according to claim 1, wherein an inner bottom portion of the steam port unit is inclined downward from the steam discharge port toward the communicating portion.

The rice cooker according to claim 1, wherein the guide wall is made of a metal made of a heat conductor.

The rice cooker according to claim 1, wherein the guide wall is configured to be detachable from the steam port unit.