JP7415982B2 - rice cooker - Google Patents

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JP7415982B2
JP7415982B2 JP2021033090A JP2021033090A JP7415982B2 JP 7415982 B2 JP7415982 B2 JP 7415982B2 JP 2021033090 A JP2021033090 A JP 2021033090A JP 2021033090 A JP2021033090 A JP 2021033090A JP 7415982 B2 JP7415982 B2 JP 7415982B2
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steam
soybean
lid
rice cooker
inner pot
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JP2022134156A (en
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智也 蜷川
和善 根岸
善行 藤田
健太 町井
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Description

本発明は、おねば等のふきこぼれを抑制する構成を有する炊飯器に関するものである。 TECHNICAL FIELD The present invention relates to a rice cooker having a structure that suppresses boiling of soot and the like.

炊飯中に、内釜で発生した蒸気とおねばを分離し、蒸気を外部に放出させるとともに、おねばを内釜内に戻すことは、炊飯器では一般的になされている。例えば、特許文献1では、上板と下板とで内蓋を構成してその間に空間部を形成し、内釜内のおねば蒸気が下板の蒸気導入穴から空間部に導入され、この空間でおねばと蒸気が分離されて、蒸気は上板の蒸気排出穴、外蓋の蒸気排出部から外部に排出され、空間部のくぼみ部に溜まったおねばは、炊飯が終了して内釜内の圧力が下がり下板の開閉弁が開くことで、内釜内に戻される炊飯器が開示されている。 During rice cooking, it is common practice in rice cookers to separate the steam and sticky rice generated in the inner pot, release the steam to the outside, and return the sticky rice back into the inner pot. For example, in Patent Document 1, an inner lid is formed by an upper plate and a lower plate, and a space is formed between them, and the steam in the inner pot is introduced into the space from the steam introduction hole in the lower plate. The rice and steam are separated in the space, and the steam is discharged to the outside through the steam exhaust hole on the top plate and the steam exhaust part on the outer lid. A rice cooker is disclosed in which the rice cooker is returned to the inner pot when the pressure inside the pot is reduced and an on-off valve on a lower plate is opened.

特許第6448372号公報Patent No. 6448372

しかし、特許文献1のものでは、下板の上面全体を上板で覆い、かつ、上板と下板とをヒンジで接続するなどが必要なため、部品点数が多くなり、かつ、構成が複雑になるという課題があった。 However, in Patent Document 1, it is necessary to cover the entire upper surface of the lower plate with the upper plate and connect the upper plate and the lower plate with a hinge, so the number of parts increases and the configuration is complicated. There was an issue of becoming.

本開示は、このような課題を解決するためになされたものであり、1つの板状の部材で内蓋を構成し、蒸気とおねばとの分離が可能となる炊飯器を提供することを目的としている。 The present disclosure has been made in order to solve such problems, and an object of the present disclosure is to provide a rice cooker in which the inner lid is configured with a single plate-shaped member and it is possible to separate steam and sticky rice. It is said that

上面が開口した内釜と、内釜を加熱する加熱手段、及び、内釜を収容する内釜収納部とを有する炊飯器本体と、炊飯器本体にヒンジ接続され、炊飯器本体の上方を覆い蒸気排出口を有する外蓋と、外蓋の下面側に着脱自在に装着される内蓋と、を備え、内蓋は、平板部と、平板部から内釜収納部に向かって突出したおねば溜め部と、平板部でおねば溜め部との接続部分と近接する位置に設けられた蒸気流入口とを有する炊飯器とした。 A rice cooker body having an inner pot with an open top surface, a heating means for heating the inner pot, and an inner pot storage part for accommodating the inner pot; The inner lid includes an outer lid having a steam exhaust port and an inner lid that is removably attached to the lower surface of the outer lid. The rice cooker has a reservoir part and a steam inlet provided in a flat plate part at a position close to a connection part with the soybean reservoir part.

内蓋を1つの板状の部材で構成でき、かつ、蒸気とおねばとの分離を十分に行う事ができる。 The inner lid can be constructed from one plate-shaped member, and steam and soot can be sufficiently separated.

実施の形態1に係る炊飯器の蓋体を閉じた状態での外観斜視図である。FIG. 2 is a perspective view of the appearance of the rice cooker according to Embodiment 1 with the lid closed. 実施の形態1に係る炊飯器の蓋体を開いた状態での外観斜視図である。FIG. 2 is an external perspective view of the rice cooker according to Embodiment 1 with the lid opened. 実施の形態1に係る炊飯器の内蓋を取り外した状態で外観斜視図である。FIG. 2 is a perspective view of the appearance of the rice cooker according to Embodiment 1 with the inner lid removed. 実施の形態1に係る炊飯器の縦断面概略図である。1 is a schematic vertical cross-sectional view of a rice cooker according to Embodiment 1. FIG. 実施の形態1に係る炊飯器の内蓋を下面側から見た外観斜視図である。FIG. 2 is an external perspective view of the inner lid of the rice cooker according to Embodiment 1, viewed from the bottom side. 実施の形態1に係る炊飯器の内蓋の下面図である。FIG. 3 is a bottom view of the inner lid of the rice cooker according to the first embodiment. 実施の形態1に係る炊飯器の内蓋の下面の一部拡大図である。It is a partially enlarged view of the lower surface of the inner lid of the rice cooker according to Embodiment 1. 実施の形態1に係る炊飯器の内蓋の横断面図である。FIG. 3 is a cross-sectional view of the inner lid of the rice cooker according to the first embodiment. 実施の形態1に係る炊飯器の蒸気経路周辺の縦断面概略図である。1 is a schematic vertical cross-sectional view of the vicinity of a steam path of the rice cooker according to Embodiment 1. FIG. 実施の形態1に係る炊飯器の蒸気経路でのおねばと蒸気の流れを示す図である。FIG. 3 is a diagram showing the flow of rice and steam in the steam path of the rice cooker according to the first embodiment. 実施の形態1に係る炊飯器の蒸気流入口を通過するおねば泡の変化を示である。4 shows changes in rice bubbles passing through the steam inlet of the rice cooker according to Embodiment 1. 実施の形態2に係る炊飯器の蒸気経路周辺の縦断面概略図である。FIG. 2 is a schematic vertical cross-sectional view of the vicinity of a steam path of a rice cooker according to Embodiment 2. FIG. 実施の形態2に係る炊飯器の蒸気流入口を通過するおねば泡の変化を示す図である。It is a figure which shows the change of the rice bubbles which pass through the steam inlet of the rice cooker based on Embodiment 2.

以下、実施の形態を図面に基づいて説明する。なお、以下に説明する実施の形態によって発明が限定されるものではない。また、以下の図面では各構成部材の大きさの関係が実際のものとは異なる場合がある。 Hereinafter, embodiments will be described based on the drawings. Note that the invention is not limited to the embodiments described below. Further, in the following drawings, the size relationship of each component may differ from the actual one.

実施の形態1.
図1は、炊飯器の蓋体を閉じた状態での外観斜視図、図2は、蓋体を開いた状態での外観斜視図、図3は、図2で内蓋を取り外した状態での外観斜視図、図4は、炊飯器の縦断面概略図、図5は、内蓋を下面側から見た外観斜視図、図6は、内蓋の下面図、図7は、内蓋の下面の一部拡大図、図8は、内蓋の縦断面図、図9は、蒸気経路周辺の縦断面概略図である。なお、説明の便宜上、図1にて、点線矢印での方向を前・後(背)、実線矢印での方向を右・左、又は、横、太線矢印での方向を上・下とする。
Embodiment 1.
Figure 1 is a perspective view of the rice cooker with the lid closed, Figure 2 is a perspective view of the rice cooker with the lid open, and Figure 3 is Figure 2 with the inner lid removed. 4 is a schematic vertical cross-sectional view of the rice cooker, FIG. 5 is a perspective view of the inner lid viewed from the bottom, FIG. 6 is a bottom view of the inner lid, and FIG. 7 is the bottom of the inner lid. FIG. 8 is a longitudinal cross-sectional view of the inner lid, and FIG. 9 is a schematic vertical cross-sectional view of the vicinity of the steam path. For convenience of explanation, in FIG. 1, the directions indicated by dotted line arrows are referred to as front and rear (back), the directions indicated by solid line arrows are referred to as right, left, or horizontal, and the directions indicated by thick line arrows are referred to as upper and lower.

図1~図4に示すように、炊飯器100は、本体1と蓋体2とで主に構成される。本体1の内部には、米などの調理物である被加熱物を保持する有底筒状の内釜3が取り出し自在に収容される収納空間である内釜収納部11があり、その内釜収納部11の底面下には、内釜3を誘導加熱する加熱手段である加熱コイル12、内釜収納部11の側面には胴ヒータ13が配置されている。 As shown in FIGS. 1 to 4, the rice cooker 100 is mainly composed of a main body 1 and a lid 2. As shown in FIGS. Inside the main body 1, there is an inner pot storage section 11, which is a storage space in which a bottomed cylindrical inner pot 3 for holding an object to be heated, such as rice, is removably stored. A heating coil 12 , which is a heating means for induction heating the inner pot 3 , is arranged below the bottom surface of the storage section 11 , and a body heater 13 is arranged on the side surface of the inner pot storage section 11 .

蓋体2は、外形を形成する外蓋20と、外蓋20の内釜3側となる面、つまり下面に着脱自在に取り付けられ、蓋体2で本体1の上面を閉じた際に、内釜3の上部開口を閉塞する内蓋30とを備えている。そして、本体1の後上方にあるヒンジ部14に、外蓋20が回転自在に接続されている。 The lid 2 is removably attached to the outer lid 20 that forms the outer shape and the surface of the outer lid 20 that faces the inner pot 3, that is, the lower surface, and when the top surface of the main body 1 is closed with the lid 2, the inner It includes an inner lid 30 that closes the upper opening of the pot 3. An outer lid 20 is rotatably connected to a hinge portion 14 located at the upper rear of the main body 1.

内釜3は、中央部分がやや上側に凸状となった底部3aと、底部3aと連続する筒状の外周部3bと、外周部3bの上端部分から外側に段状になった上部外周部3cとからなり、上面が開口する形状となっている。なお、外周部3bを水平に切った円の内側直径をRaとしたとき、上部外周部3cを水平に切った円の内側直径Rbは、1.1Raとなっている。すなわち、上部外周部3cの上側からみた開口は、外周部3bの上側からみた開口よりも大きくなっている。 The inner pot 3 has a bottom portion 3a with a slightly upwardly convex central portion, a cylindrical outer circumferential portion 3b continuous with the bottom portion 3a, and an upper outer circumferential portion stepped outward from the upper end portion of the outer circumferential portion 3b. 3c, and has an open top surface. Note that, when the inner diameter of a circle cut horizontally from the outer circumferential portion 3b is Ra, the inner diameter Rb of a circle cut horizontally from the upper outer circumferential portion 3c is 1.1Ra. That is, the opening of the upper outer periphery 3c when viewed from above is larger than the opening when viewed from above the outer periphery 3b.

加熱コイル12は、それぞれ円環状に形成され、内釜収納部11の底面の中央には、内釜3の温度を検出する底サーミスタ15が設置されている。 The heating coils 12 are each formed in an annular shape, and a bottom thermistor 15 for detecting the temperature of the inner pot 3 is installed at the center of the bottom surface of the inner pot storage section 11.

本体1の前面には、蓋体2を開ける際に押下される蓋開ボタン16が設けられている。この蓋開ボタン16を押下すると、外蓋20と本体1との係止が解除されて、外蓋20を開けることができる。また、本体1の内部の後側には、商用電源を高周波電力に変換して加熱コイル12、胴ヒータ13に供給するための回路が実装された電源基板17が設けられている。この電源基板17は、インバーター回路を構成するスイッチング素子などの部品で構成されている。 A lid opening button 16 is provided on the front surface of the main body 1 to be pressed when opening the lid body 2. When the lid opening button 16 is pressed, the lock between the outer lid 20 and the main body 1 is released, and the outer lid 20 can be opened. Further, on the rear side of the interior of the main body 1, a power supply board 17 is provided, on which a circuit for converting commercial power into high-frequency power and supplying it to the heating coil 12 and the body heater 13 is mounted. This power supply board 17 is composed of components such as switching elements that constitute an inverter circuit.

外蓋20上面の前側には、炊飯ボタンなどの各種操作ボタンを備えた操作パネル21が設けられている。外蓋20の内部には、各種操作ボタンに対応した各種入力スイッチが実装された操作基板22が設けられている。操作基板22は、各種入力スイッチからの入力に基づいて電源基板17に制御信号を出力する。なお、操作基板22を構成する回路は、その機能を実現する回路デバイスのようなハードウェアで構成することもできるし、CPU、マイコンなどの演算装置とその動作を規定するソフトウェアで構成することもできる。また、外蓋20の下面には、内釜3内の温度を検知する蓋センサー23が設けられている。 An operation panel 21 equipped with various operation buttons such as a rice cooking button is provided on the front side of the upper surface of the outer lid 20. An operation board 22 is provided inside the outer cover 20 on which various input switches corresponding to various operation buttons are mounted. The operation board 22 outputs control signals to the power supply board 17 based on inputs from various input switches. Note that the circuit configuring the operation board 22 can be configured with hardware such as a circuit device that realizes its functions, or can be configured with an arithmetic device such as a CPU or a microcomputer and software that specifies its operation. can. Further, a lid sensor 23 for detecting the temperature inside the inner pot 3 is provided on the lower surface of the outer lid 20.

外蓋20の内側側面の前面側には、凹部24が設けられている。また、外蓋20の内側側面の後面側には、2つの支持部25が間隔を開けて設けられている。
さらに、外蓋20の内側下面は、中央から後方向、すなわち、ヒンジ部14と接続する接続部26に向かって、上方に大きく窪んだ空間である蒸気経路部27が形成されており、外蓋20の上面後方側に設けられた蒸気排出口28と連通している。
A recess 24 is provided on the front side of the inner side surface of the outer lid 20. Further, on the rear side of the inner side surface of the outer cover 20, two supporting parts 25 are provided with an interval between them.
Further, on the inner lower surface of the outer lid 20, a steam path portion 27 is formed which is a space that is largely recessed upward from the center toward the rear, that is, toward the connecting portion 26 that connects to the hinge portion 14. It communicates with a steam exhaust port 28 provided on the rear side of the upper surface of 20.

次に、内蓋20について図5~図8を用いて詳細に説明する。
内蓋30はアルミニウム、ステンレス等の円盤状の板金で主に構成されており、第1の凸部31と、第1の凸部31と反対の位置に設けられた第2の凸部32とを有している。そして、この第1の凸部31を外蓋20の支持部25に差し込み、第2の凸部32を外蓋20の凹部24に止めることで、内蓋30を外蓋20に固定することができる。
Next, the inner lid 20 will be explained in detail using FIGS. 5 to 8.
The inner lid 30 is mainly composed of a disc-shaped sheet metal made of aluminum, stainless steel, etc., and includes a first protrusion 31 and a second protrusion 32 provided at a position opposite to the first protrusion 31. have. The inner cover 30 can be fixed to the outer cover 20 by inserting the first protrusion 31 into the support part 25 of the outer cover 20 and fixing the second protrusion 32 in the recess 24 of the outer cover 20. can.

また、内蓋30は、中央から第1の凸部31までの間に、板金を下方に突出したおねば溜め部33が金属プレスによる絞り加工で形成され、内蓋30を外蓋20に固定した時、おねば溜め部33が外蓋20の蒸気経路部27に対向するようになっている。なお、内蓋30の板金のうち、おねば溜め部33以外の平板部分を平板部34と称する。 In addition, the inner cover 30 has a sticky plate part 33 formed from a sheet metal that protrudes downward between the center and the first convex part 31 by drawing with a metal press, and fixes the inner cover 30 to the outer cover 20. At this time, the steam reservoir section 33 faces the steam path section 27 of the outer lid 20. Incidentally, of the sheet metal of the inner lid 30, a flat plate portion other than the soybean reservoir portion 33 is referred to as a flat plate portion 34.

内蓋20のおねば溜め部33には、内釜3内の蒸気圧に応じて上下に移動して連結口35を開閉する開閉弁36が設けられている。なお、開閉弁36は、例えば耐熱性を有するシリコンゴムや、耐加水分解性の高い材料であるシンジオタクチックポリスチレン樹脂(SPS)などで構成されている。 The soot reservoir 33 of the inner lid 20 is provided with an on-off valve 36 that moves up and down depending on the steam pressure in the inner pot 3 to open and close the connection port 35. The on-off valve 36 is made of, for example, heat-resistant silicone rubber or syndiotactic polystyrene resin (SPS), which is a material with high hydrolysis resistance.

さらに、内蓋30の平板部34のうち、おねば溜め部33の接続部分(根元)と近接する部分で第2の凸部32側、すなわち、内蓋30の中央部分、少なくとも、内蓋30の円部分の直径をRとしたとき、円部分の中心からR/5の範囲内に、2つの蒸気流入口37が設けられている。なお、蒸気流入口37は、おねば溜め部33よりも上方に位置することなる。この蒸気流入口37は、短径が1.5mm、長径が4mmの楕円形状をしており、内蓋30を外蓋20に固定した時、外蓋20の蒸気経路空間27に対向するようになる。 Furthermore, a portion of the flat plate portion 34 of the inner lid 30 that is close to the connection portion (base) of the sticky reservoir portion 33 is located on the second convex portion 32 side, that is, a central portion of the inner lid 30; When the diameter of the circular portion is R, two steam inlets 37 are provided within a range of R/5 from the center of the circular portion. Note that the steam inlet 37 is located above the steam reservoir 33. This steam inflow port 37 has an elliptical shape with a short axis of 1.5 mm and a long axis of 4 mm, and when the inner cover 30 is fixed to the outer cover 20, it faces the steam path space 27 of the outer cover 20. Become.

このような炊飯器1において、内釜3内に米と水とを収容して、炊飯ボタンを押すと、加熱コイル12、胴ヒータ13によって内釜3を加熱してご飯を炊き上げる炊飯工程を開始し、内釜3内に蒸気が発生するとともに、米に保持された成分も熱によって米の外部に析出し、この成分が蒸気を包み込んだような、おねば泡が内釜3内に発生し続ける現象になる。また、この時、おねば泡は、内釜3内の上部空間を満たすような状態になる。なお、内釜3は、外周部3bの上側部分が外側に段状になった上部外周部3cとからなる形状となるので、外周部分3b付近のおねば泡は、上部外周部3cに至った時点で少し外周に流れるため、おねば泡の分布状況は、中央部分が少し盛り上がったようになる。そして、おねば泡は、内蓋20の下面まで達して蒸気流入口37を通って、内蓋30の上面と蓋体2の間にある蒸気経路部27に入り、この蒸気経路部27を後方向に流れるとともに、液状のおねばと蒸気とに分離、おねばは下方のおねば溜め部33に溜められ、蒸気は蒸気排出口28から外部に排出されることになる。 In such a rice cooker 1, when rice and water are stored in the inner pot 3 and the rice cooking button is pressed, a rice cooking process is started in which the inner pot 3 is heated by the heating coil 12 and the body heater 13 to cook the rice. At the same time, steam is generated in the inner pot 3, and the ingredients retained in the rice are also precipitated on the outside of the rice due to the heat, and sticky bubbles are generated in the inner pot 3 as if these ingredients envelop the steam. It becomes a phenomenon that continues. Also, at this time, the sticky foam fills the upper space in the inner pot 3. In addition, since the inner pot 3 has a shape in which the upper part of the outer circumferential part 3b is stepped outwardly and the upper outer circumferential part 3c, the sticky foam near the outer circumferential part 3b reaches the upper outer circumferential part 3c. At this point, the bubbles flow slightly toward the outer periphery, so the distribution of the sticky bubbles becomes slightly raised in the center. The sticky foam then reaches the lower surface of the inner lid 20, passes through the steam inlet 37, enters the steam path section 27 between the upper surface of the inner lid 30 and the lid body 2, and leaves this steam path section 27 behind. As it flows in the direction, the soybean is separated into liquid soybean and steam, the soybean is stored in the soybean reservoir 33 below, and the steam is discharged to the outside from the steam outlet 28.

その後、炊飯工程が終了すると、内釜3内の圧力が下がり、開閉弁36は自重とおねばの重さにより下がり、連結口35が開いてそこからおねば溜め部33に溜め込まれたおねばが内釜3内に戻されることになるため、美味しいご飯を炊き上げることができる。また、おねばを内釜3内に効率的に戻すことができる。 After that, when the rice cooking process is finished, the pressure inside the inner pot 3 decreases, the on-off valve 36 lowers due to its own weight and the weight of the soybean, the connection port 35 opens, and the soybean accumulated in the soybean reservoir 33 is released from there. Since the rice is returned to the inner pot 3, delicious rice can be cooked. Moreover, the sticky liquid can be efficiently returned to the inner pot 3.

次に、内蓋30の蒸気流入口37から蒸気経路部27を流れ、おねばはおねば溜め部33に溜まり、蒸気は蒸気排出口28から外部に放出されるまでに現象を図10、11に基づいて説明する。なお、図10は蒸気経路でのおねばと蒸気の流れを示す図、図11は蒸気流入口37を通過するおねば泡の変化を示す図である。 Next, the steam flows through the steam path section 27 from the steam inlet 37 of the inner lid 30, accumulates in the steam reservoir section 33, and is discharged from the steam outlet 28 to the outside. I will explain based on this. Note that FIG. 10 is a diagram showing the flow of steam and steam in the steam path, and FIG. 11 is a diagram showing changes in steam bubbles passing through the steam inlet 37.

内釜3内で発生するおねば泡は、状況に応じて変わるが、直径4~5mm以上のものがほとんどであり、大きい場合には数cmというものもある。これに対し、蒸気流入口37は、短径が1.5mmと非常に小さい。よって、図11に示すように、内釜3内のおねば泡は内部の圧力で内釜3内の上部空間を満たしていき(a)、内蓋30に達した後に、蒸気流入口37から内蓋30に侵入(b)、そのまま上方に押し上げられていくに従って、おねば泡の液膜が引き伸ばされて薄化し、やがて、おねば泡が破れ、内部の蒸気と液状のおねばとが分離され、図10に示すように、おねばは自重にておねば溜め部33に流れ、蒸気は後ろ方向に流れて蒸気排出口28から外部に放出されることになる。 The sticky bubbles generated in the inner pot 3 vary depending on the situation, but most have a diameter of 4 to 5 mm or more, and some are several centimeters in diameter. On the other hand, the steam inlet 37 has a short axis of 1.5 mm, which is very small. Therefore, as shown in FIG. 11, the sticky foam in the inner pot 3 fills the upper space in the inner pot 3 due to the internal pressure (a), and after reaching the inner lid 30, it flows out from the steam inlet 37. As it enters the inner lid 30 (b) and is pushed upward, the liquid film of the sticky foam is stretched and thinned, and eventually the sticky foam breaks and the steam inside and the liquid sticky foam are separated. Then, as shown in FIG. 10, the sticky liquid flows into the sticky liquid reservoir 33 under its own weight, and the steam flows backward and is discharged to the outside from the steam exhaust port 28.

このように、この実施の形態では、1枚の板状からなる内蓋30によって、おねばと蒸気とを分離でき、複雑な構成を必要としない。 In this manner, in this embodiment, the soot and steam can be separated using the inner lid 30 made of a single plate, and a complicated structure is not required.

なお、蒸気流入口37は、あまり小さいと米粒が詰まり目つまりが発生してしまい、大きいと、おねば泡を破るという機能を発揮しなくなるため、短径が1.5mm~3mm程度で設計することが好ましい。蒸気流入口37は、楕円形でなく、星形状や三角形状にしても当然に良い。 In addition, if the steam inlet 37 is too small, rice grains will clog the hole, and if it is too large, it will not be able to break the bubbles, so it is designed to have a short diameter of about 1.5 mm to 3 mm. It is preferable. Naturally, the steam inlet 37 may have a star shape or a triangular shape instead of an elliptical shape.

実施の形態2.
図12は、実施の形態2における炊飯器1の、内蓋20と蓋体2の蒸気経路空間27との部分との縦断面概略図、図13は、蒸気流入口37を通過するおねば泡の変化を示す図である。
実施の形態1では、内蓋30の蒸気流入口37を外蓋20に固定した時、外蓋20の蒸気経路部27に対向するようにしたが、図12では、蒸気経路部27を形成する前側の壁部27aが、蒸気流入口37の前側部分の上方を小さい隙間を残して対向、後側部分が蒸気経路空間26に対向するようにしたものである。
Embodiment 2.
FIG. 12 is a schematic vertical cross-sectional view of the inner lid 20 and the steam path space 27 of the lid body 2 of the rice cooker 1 according to the second embodiment, and FIG. FIG.
In the first embodiment, when the steam inlet 37 of the inner lid 30 is fixed to the outer lid 20, it faces the steam path portion 27 of the outer lid 20, but in FIG. 12, the steam path portion 27 is formed. The front wall portion 27a faces the front portion of the steam inlet 37 with a small gap left above, and the rear portion thereof faces the steam path space 26.

このような形態では、図13に示すように、蒸気流入口37の短径より小さいおねば泡は、図11のような現象が発生せず、蒸気流入口37を通ることがある(a)。しかし、蒸気流入口37の上方に壁部27aがあることで、おねば泡は、蒸気流入口37を通る間に壁部27aの下面に衝突し、おねば泡が破れ、内部の蒸気と液状のおねばとを分離させることになる(b)。 In such a configuration, as shown in FIG. 13, bubbles smaller than the short diameter of the steam inlet 37 may pass through the steam inlet 37 without causing the phenomenon shown in FIG. 11 (a) . However, since there is a wall 27a above the steam inlet 37, the soybean bubbles collide with the lower surface of the wall 27a while passing through the steam inlet 37, causing the soba bubbles to burst and form a mixture of internal steam and liquid. (b)

このようにすることで、おねば泡を破ることがより容易になり、蒸気とおねばとの分離効率を上げることができる。 By doing so, it becomes easier to break the sticky bubbles, and the efficiency of separating steam and sticky liquid can be increased.

1 本体、2 蓋体、3 内釜、3a 底部、3b 外周部、3c 上部外周部、11 内釜収納部、12 加熱コイル、13 胴ヒータ、14 ヒンジ部、15 底サーミスタ、16 蓋開ボタン、17 電源基板、20 外蓋、21 操作パネル、22 操作基板、23 蓋センサー、24 凹部、25 支持部、26 接続部、27 蒸気経路部、27a 壁部、28 蒸気排出口、30 内蓋、31 第1の凸部、32 第2の凸部、33 おねば溜め部、34 平板部、35 連結口、36 開閉弁、37 蒸気流入口、100 炊飯器 1 Main body, 2 Lid, 3 Inner pot, 3a Bottom, 3b Outer periphery, 3c Upper outer periphery, 11 Inner pot storage, 12 Heating coil, 13 Body heater, 14 Hinge, 15 Bottom thermistor, 16 Lid opening button, 17 power supply board, 20 outer lid, 21 operation panel, 22 operation board, 23 lid sensor, 24 recess, 25 support part, 26 connection part, 27 steam path part, 27a wall part, 28 steam outlet, 30 inner lid, 31 1st convex part, 32 2nd convex part, 33 sticky reservoir part, 34 flat plate part, 35 connection port, 36 on-off valve, 37 steam inlet, 100 rice cooker

Claims (2)

上面が開口した内釜と、
前記内釜を加熱する加熱手段、及び、前記内釜を収容する内釜収納部とを有する炊飯器本体と、
前記炊飯器本体のヒンジ部にヒンジ接続され、前記炊飯器本体の上方を覆う蒸気排出口を有する外蓋と、
前記外蓋の下面側に着脱自在に装着される内蓋と、を備え、
前記外蓋は、内側側面の前面側には凹部が設けられ、後面側には、支持部が設けられ、内側下面は、中央から前記ヒンジ部と接続する接続部に向かって、上方に窪んだ空間である蒸気経路部が形成され、前記蒸気経路部は前記蒸気排出口と連通しているとともに、
前記内蓋は円盤状の板金で構成され、第1の凸部と、前記第1の凸部と反対の位置に設けられた第2の凸部とを有し、前記第1の凸部を前記支持部に差し込み、前記第2の凸部を前記凹部に止めることで、前記外蓋に固定することができるとともに、中央から前記第1の凸部の方向に、下方に突出したおねば溜め部を有するとともに、前記おねば溜め部以外は平板状の平板部であり、前記平板部で前記おねば溜め部との接続部分と近接する位置に設けられた蒸気流入口とを有し、
前記おねば溜め部と前記蒸気経路部とは対向し、
炊飯中、前記内釜内で発生したおねば泡は、前記蒸気流入口を通って前記蒸気経路部に入り、前記蒸気経路部で蒸気とおねばとに分離させるとともに、前記蒸気は前記蒸気排出口から外部に排出され、前記おねばは前記おねば溜め部にたまる
ことを特徴とする炊飯器。
An inner pot with an open top,
a rice cooker main body having a heating means for heating the inner pot; and an inner pot storage section for accommodating the inner pot;
an outer lid that is hingedly connected to a hinge part of the rice cooker main body and has a steam exhaust port that covers an upper part of the rice cooker main body;
an inner cover detachably attached to the lower surface side of the outer cover,
The outer cover is provided with a recess on the front side of the inner side surface, a support portion on the rear side, and a lower inner surface recessed upward from the center toward the connecting portion connected to the hinge portion. A steam path portion which is a space is formed, and the steam path portion communicates with the steam exhaust port, and
The inner lid is made of a disc-shaped sheet metal, and has a first protrusion and a second protrusion provided at a position opposite to the first protrusion. By inserting it into the supporting part and fixing the second convex part in the concave part, it can be fixed to the outer lid, and the rice reservoir protrudes downward from the center in the direction of the first convex part. and has a flat plate portion other than the soybean reservoir, and a steam inlet provided in the flat plate portion at a position adjacent to a connecting portion with the soot reservoir,
The soot reservoir part and the steam path part are opposed to each other,
During rice cooking, the soybean foam generated in the inner pot enters the steam path section through the steam inlet, and is separated into steam and soybean in the steam path section, and the steam is passed through the steam outlet. The rice cooker is characterized in that the soybean is discharged to the outside from the soybean and the soybean is collected in the soybean reservoir.
蒸気流入口の上方の一部は、隙間を介して蒸気経路部の壁部に対向していることを特徴とする請求項1に記載の炊飯器。 The rice cooker according to claim 1, wherein an upper part of the steam inlet faces a wall of the steam path portion through a gap.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005168706A (en) 2003-12-10 2005-06-30 Matsushita Electric Ind Co Ltd Rice cooker
JP2011239878A (en) 2010-05-17 2011-12-01 Tiger Vacuum Bottle Co Ltd Electric rice cooker
JP2016129610A (en) 2015-01-14 2016-07-21 三菱電機株式会社 rice cooker
JP2020199179A (en) 2019-06-13 2020-12-17 三菱電機株式会社 Inner pot and rice cooker

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55251U (en) * 1978-06-14 1980-01-05
JPS61122816A (en) * 1984-11-16 1986-06-10 松下電器産業株式会社 Rice cooker
JPH0440585Y2 (en) * 1989-10-31 1992-09-24

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005168706A (en) 2003-12-10 2005-06-30 Matsushita Electric Ind Co Ltd Rice cooker
JP2011239878A (en) 2010-05-17 2011-12-01 Tiger Vacuum Bottle Co Ltd Electric rice cooker
JP2016129610A (en) 2015-01-14 2016-07-21 三菱電機株式会社 rice cooker
JP2020199179A (en) 2019-06-13 2020-12-17 三菱電機株式会社 Inner pot and rice cooker

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