JP6749861B2 - Heat sink heating structure for heating cookers - Google Patents

Description

本発明は、上端開口の調理鍋が配設される調理器本体と、
前記調理器本体の上端開口を開閉可能に構成され、前記上端開口を閉じた閉姿勢において、前記調理鍋内と外部とを連通する蒸気通路が貫通する蓋体と、
前記蒸気通路の入口を構成する連通孔を有し、前記蓋体の前記調理鍋内を臨む側に備えられ、前記調理鍋の上端開口を密閉する内蓋とを備え、
前記内蓋の上面に沿った放熱面部位と、当該放熱面部位の外周近傍から蓋体側に立ち上る外周壁部位とを備え、前記蒸気通路が貫通する蒸気通路用貫通孔を備えた放熱板を備え、前記放熱板の上面に蓋体側加熱手段を備えた加熱調理器の放熱板加熱構造に関する。 The present invention is a cooker body in which a cooking pot with an upper opening is arranged,
A lid body configured to be able to open and close an upper end opening of the cooker body, and in a closed posture in which the upper end opening is closed, a steam passage that communicates the inside and the outside of the cooking pot,
It has a communication hole that constitutes the inlet of the steam passage, is provided on the side of the lid facing the inside of the cooking pot, and comprises an inner lid for sealing the upper end opening of the cooking pot,
A heat dissipation surface portion along the upper surface of the inner lid; an outer peripheral wall portion rising from the vicinity of the outer periphery of the heat dissipation surface portion to the lid side; and a heat dissipation plate having a steam passage through hole through which the steam passage penetrates. The present invention relates to a radiator plate heating structure of a heating cooker including a lid side heating means on an upper surface of the radiator plate.

この種の加熱調理器の放熱板加熱構造が、特許文献１に紹介されている。
この文献には、加熱調理器の小型化、高機能化に伴って平面部分が制限される放熱板４を加熱するための加熱板３に、ヒータ線５をしっかりと貼着する技術が開示されている。 A heat dissipation plate heating structure of this type of cooking device is introduced in Patent Document 1.
This document discloses a technique in which a heater wire 5 is firmly attached to a heating plate 3 for heating a heat radiating plate 4 of which a flat portion is restricted due to miniaturization and high functionality of a heating cooker. ing.

この技術では、ヒータ線５をアルミニウム箔６によって貼着する。ヒータ線５を貼着するための十分な平面を確保することができない細幅部分では、傾斜面や曲面といった上下方向の変形面を形成し、この部分にアルミニウム箔６を貼着することによって広い貼着面積（伝熱面積でもある）を確保する。ヒータ線５は、その径方向の両側部においてアルミニウム箔６を延設して貼着される。 In this technique, the heater wire 5 is attached by the aluminum foil 6. In the narrow portion where a sufficient flat surface for attaching the heater wire 5 cannot be ensured, a vertically deformed surface such as an inclined surface or a curved surface is formed, and the aluminum foil 6 is attached to this portion to widen it. Secure the attachment area (also the heat transfer area). The heater wire 5 is attached by extending aluminum foils 6 on both sides in the radial direction.

従来、この種の蓋体側加熱手段に求められる加熱量はほぼ４０Ｗ以下であった。 Conventionally, the heating amount required for this kind of lid side heating means has been about 40 W or less.

特開２００１−３２１２６６号公報JP 2001-321266 A 特開２０１３−２３６７９６号公報JP, 2013-236796, A

さて、近年、本発明の出願人は、特許文献２において、この蓋体側加熱手段（蓋ヒータ２５）を配置する放熱板２４の内径側に、調圧弁４３Ａ，４３Ｂを収納する弁収容部３３Ａ、３３Ｂをそれぞれ設け、これら収納室３３Ａ，３３Ｂの下流側に蒸気ユニット３５を繋げ、この蒸気ユニット３５に設けられた排気口３６から蒸気を排気する構成を提案している。 By the way, in recent years, the applicant of the present invention discloses in Patent Document 2 that a valve accommodating portion 33A for accommodating the pressure regulating valves 43A, 43B is provided on the inner diameter side of the heat radiating plate 24 in which the lid side heating means (lid heater 25) is arranged. 33B is provided, the steam unit 35 is connected to the downstream side of the storage chambers 33A and 33B, and the steam is exhausted from an exhaust port 36 provided in the steam unit 35.

この構成では、蓋体１９の下、内蓋２７上に、調理鍋１０内と外部とを連通する蒸気通路（各弁収容室３３Ａ、３３Ｂ及び蒸気ユニット３５）を設けることとなるが、蒸気とともに調理鍋１０から流入してくる液状物質（とくにおねば）を、この蒸気通路で分離しようとすると、蒸気通路を屈曲通路とすることが好ましい。 In this configuration, the steam passages (the respective valve accommodating chambers 33A and 33B and the steam unit 35) that communicate the inside and the outside of the cooking pot 10 are provided under the lid body 19 and on the inner lid 27, but with the steam. When separating a liquid substance (particularly, oneba) flowing from the cooking pot 10 in this steam passage, it is preferable that the steam passage be a bent passage.

このように蒸気から液状物質を分離しようとする場合、蒸気通路の構成をできるだけ複雑にする必要が生じるが、制限された容積内にその目的を達成することができる屈曲経路を形成しようとすると、当然にその蒸気通路構成部材の占有容積が嵩み、蓋体側加熱手段に割り当てることができる容積（平面視での面積）が制限される。 When attempting to separate the liquid substance from the vapor in this way, it is necessary to make the structure of the vapor passage as complicated as possible, but when trying to form a bent path capable of achieving the purpose within a limited volume, Naturally, the occupied volume of the vapor passage constituting member increases, and the volume (area in plan view) that can be assigned to the lid side heating means is limited.

一方、蓋体側加熱手段に関しては、その保温機能を高めたい等の目的から、その加熱量を従来の倍程度にまで高めたいという要求がある。この場合、蓋体側加熱手段を構成するヒータ線の単位長当たりの発熱量を増加させることも考えられるが、加熱調理器等で採用可能なヒータ線に於ける単位長当たりの発熱量（Ｗ／ｍ）に制限があるため、ヒータ線の線長を長くする必要が生じる。
例えば、その加熱量と倍にしようとすると、現在のヒータ線の線長に対して、その線長が倍となり、従来の貼着構造では対応できない。即ち、放熱板２４の径は、一般に大きくないためヒータ線の線長を倍にしようとすると、所謂、二重巻きとする必要が生じるのである。
このように、二重巻きとする場合、従来構造では、実質的に対応できない。 On the other hand, with respect to the lid side heating means, there is a demand to increase the heating amount to about twice that of the conventional case for the purpose of enhancing its heat retaining function. In this case, it is conceivable to increase the amount of heat generated per unit length of the heater wire that constitutes the lid side heating means, but the amount of heat generated per unit length (W/ Since there is a limitation in m), it becomes necessary to increase the length of the heater wire.
For example, if it is attempted to double the heating amount, the line length becomes double the current line length of the heater wire, and the conventional pasting structure cannot cope with this. That is, since the diameter of the heat radiating plate 24 is not generally large, it is necessary to double the length of the heater wire, that is, so-called double winding.
Thus, in the case of double winding, the conventional structure cannot substantially cope with the problem.

上記実情に鑑み、本発明の主たる課題は、蒸気通路を複雑化するためにその占有容積が増加しても、必要な加熱量を確保でき、蓋体側加熱手段に求められる高加熱化に対応できる加熱調理器の放熱板加熱構造を提供する点にある。 In view of the above situation, the main problem of the present invention is that even if the occupied volume is increased to complicate the steam passage, the required heating amount can be secured, and it is possible to cope with the high heating required for the lid side heating means. The point is to provide a heat sink heating structure for a cooking device.

上記目的を達成するための、
上端開口の調理鍋が配設される調理器本体と、
前記調理器本体の上端開口を開閉可能に構成され、前記上端開口を閉じた閉姿勢において、前記調理鍋内と外部とを連通する蒸気通路が貫通する蓋体と、
前記蒸気通路の入口を構成する連通孔を有し、前記蓋体の前記調理鍋内を臨む側に備えられ、前記調理鍋の上端開口を密閉する内蓋とを備え、
前記内蓋の上面に沿った放熱面部位と、当該放熱面部位の外周近傍から蓋体側に立ち上る外周壁部位とを備え、前記蒸気通路が貫通する蒸気通路用貫通孔を備えた放熱板を備え、前記放熱板の上面に蓋体側加熱手段を備えた加熱調理器の放熱板加熱構造の特徴構成は、
前記蓋体側加熱手段の加熱部が、通電状態で発熱するヒータ線と、少なくとも前記ヒータ線を覆う伝熱材料部とを備えて構成され、前記伝熱材料部が、前記ヒータ線を周回する周回部と当該ヒータ線の一側に張り出す張り出し部とを備え、前記ヒータ線が当該張り出し部を介して前記放熱板の前記外周壁部位に取付けられる構成で、
内周側に前記蒸気通路用貫通孔を備えた一方の外周壁加熱部において、前記ヒータ線を前記放熱面部位に近接位置させ、前記張り出し部を前記放熱面部位から離間させる形態で、前記外周壁部位と前記蒸気通路用貫通孔との間に、単一の前記ヒータ線が前記張り出し部を介して前記外周壁部位に取付けられ、
前記蒸気通路用貫通孔を挟んで前記一方の外周壁加熱部に対向する部位に対向側加熱部を備え、
前記対向側加熱部に設けられる他方の外周壁加熱部の内周側に内周側加熱部を備えるとともに温度センサ及び温度ヒューズを備える点にある。 To achieve the above purpose,
A cooker body in which a cooking pot with an upper opening is arranged,
A lid body configured to be able to open and close an upper end opening of the cooker body, and in a closed posture in which the upper end opening is closed, a steam passage that communicates the inside and the outside of the cooking pot,
It has a communication hole that constitutes the inlet of the steam passage, is provided on the side of the lid facing the inside of the cooking pot, and comprises an inner lid for sealing the upper end opening of the cooking pot,
A heat dissipation surface portion along the upper surface of the inner lid; an outer peripheral wall portion rising from the vicinity of the outer periphery of the heat dissipation surface portion to the lid side; and a heat dissipation plate having a steam passage through hole through which the steam passage penetrates. The characteristic configuration of the radiator plate heating structure of the heating cooker provided with the lid side heating means on the upper surface of the radiator plate is:
The heating portion of the lid side heating means is configured to include a heater wire that generates heat in an energized state, and a heat transfer material portion that covers at least the heater wire, and the heat transfer material portion circulates around the heater wire. and a projecting portion projecting on one side of the parts and the heater wire, in the configuration wherein the heater wire is that attached to the outer peripheral wall portion of the heat radiating plate via the projecting portion,
In the one outer peripheral wall heating part having the through hole for the steam passage on the inner peripheral side, the heater wire is located close to the heat dissipation surface part, and the projecting part is separated from the heat dissipation surface part. Between the wall portion and the steam passage through hole, the single heater wire is attached to the outer peripheral wall portion via the projecting portion,
An opposing heating unit is provided at a portion facing the one outer peripheral wall heating unit with the steam passage through-hole interposed therebetween.
It is a point that an inner peripheral side heating section is provided on the inner peripheral side of the other outer peripheral wall heating section provided in the opposite side heating section, and a temperature sensor and a temperature fuse are provided.

本構成によれば、
ヒータ線に伝熱部材部を備える構成において、その伝熱部材部を周回部とその周回部から一側に張り出す張り出し部を有する構造とする。そして、その張り出し部の取付け部位を放熱板の外周壁部位とする。結果、この外周壁加熱部は、その部位が占有する放熱面部位に沿った厚み（平面視での厚みで、例えば、図４に示すＺ１部の厚み）を極端に薄くできる。よって、制限された箇所に所定の加熱機能を果たす加熱部を適切に設けることができる。
さらに、一方の外周壁加熱部において、ヒータ線を放熱面部位に近接位置させ、張り出し部を放熱面部位から離間させる形態で、外周壁部位と蒸気通路用貫通孔との間に、単一のヒータ線が張り出し部を介して放熱板の前記外周壁部位に取付けられる構造とすることで、蒸気通路用貫通孔と外周壁部位との間の狭い空間を利用して取付けられる。 According to this configuration,
In the configuration in which the heater wire is provided with the heat transfer member portion, the heat transfer member portion has a winding portion and a projecting portion protruding from the winding portion to one side. The mounting portion of the projecting portion is the outer peripheral wall portion of the heat dissipation plate. As a result, the outer peripheral wall heating unit can extremely reduce the thickness along the heat radiating surface portion occupied by the portion (thickness in plan view, for example, the thickness of the Z1 portion shown in FIG. 4). Therefore, it is possible to appropriately provide a heating unit that performs a predetermined heating function in the restricted place.
Further, in one of the outer peripheral wall heating parts, a heater wire is located close to the heat radiating surface part, and a projecting part is separated from the heat radiating surface part. By adopting a structure in which the heater wire is attached to the outer peripheral wall portion of the heat radiating plate via the projecting portion, the heater wire is attached utilizing a narrow space between the steam passage through hole and the outer peripheral wall portion.

また、この一方の前記外周壁加熱部と、当該蒸気通路用貫通孔を挟んで対向する側に対向側加熱部を備え、 Further, the one outer peripheral wall heating unit, and an opposing heating unit on the side facing the steam passage through hole,
この対向側加熱部に設けられる他方の外周壁加熱部の内周側に、内周側加熱部を備えるとともに温度センサ及び温度ヒューズを備えている。 The inner peripheral side heating part is provided on the inner peripheral side of the other outer peripheral wall heating part provided in the facing side heating part, and the temperature sensor and the temperature fuse are provided.

結果、対向側加熱部に他方の外周壁加熱部に加えて内周側加熱部を設けることで、所定の周回部位（対向側加熱部）に二重巻構造の加熱部を構成でき、線長を長くするという加熱量の増大に対応できる。
また、対向側加熱部は、前記蒸気通路用貫通孔を挟んで、前記一方の外周壁加熱部とは反対側に設けるため、内側加熱部を設け、さらには温度センサ及び温度ヒューズを配することができる。 As a result, by providing the heating section on the opposite side with the heating section on the inner peripheral side in addition to the heating section on the other outer peripheral wall, a heating section with a double winding structure can be configured at a predetermined circulating portion (opposing side heating section) , and the wire length It is possible to cope with an increase in the heating amount of increasing the heating time.
Further, since the opposing heating unit is provided on the opposite side of the one outer peripheral wall heating unit with the vapor passage through-hole interposed, an inner heating unit is provided, and further a temperature sensor and a temperature fuse are provided. You can

本発明に係る加熱料理器の放熱板加熱構造の特徴構成は、
前記内周側加熱部が、通電状態で発熱するヒータ線と、前記ヒータ線を覆う伝熱材料部とを有して構成される点にある。 Characteristic configuration of the heat dissipation plate heating structure of the heating cooker according to the present invention,
The inner peripheral side heating section, a heater wire for generating heat by energization, in that it is configured with a heat transfer material portion covering the heater wire.

本構成によれば、内周側加熱部においても伝熱材料部を介して放熱面部位の加熱を良好に行える。 According to this configuration, it is possible to satisfactorily heat the radiating surface portion through the heat transfer material portion even in the inner heating portion.

本構成によれば、対向側加熱部に、蓋体側加熱手段で必要となる機能部位を配置することが可能となるとともに、この部位での加熱の均等化を図ることができる。 According to this configuration, it is possible to dispose a functional part required for the lid side heating means in the facing heating part, and it is possible to achieve uniform heating in this part.

蓋体側加熱手段に求められる高加熱化に対応できるとともに、蒸気通路を複雑化するためにその占有容積が増加しても、必要な加熱量を確保できる加熱調理器の放熱板加熱構造を提供することができた。 (EN) Provided is a radiator plate heating structure of a heating cooker capable of accommodating a high heating required for a lid side heating means and securing a necessary heating amount even if an occupied volume thereof is increased to complicate a steam passage. I was able to.

本発明に係る加熱調理器の放熱板加熱構造の実施形態であって、一部を切欠いて示す炊飯器全体の側面図、It is an embodiment of the heat dissipation plate heating structure of the heating cooker according to the present invention, a side view of the entire rice cooker shown with a part cut away, 炊飯器の放熱板を調理鍋側から見た図（内蓋、内蓋カバーを取外し、蒸気通路の構成を調圧弁の配置とともに示す図）A view of the heat sink of the rice cooker as seen from the cooking pot side (a diagram showing the configuration of the steam passage together with the arrangement of the pressure regulating valve, with the inner lid and inner lid cover removed) （ａ）放熱板における蓋ヒータの配置・貼着構成を示す図、（ｂ）図３（ａ）のＩＩＩｂ−ＩＩＩｂ断面を示す図(A) The figure which shows arrangement|positioning and sticking structure of the lid heater in a heat sink, (b) The figure which shows the IIIb-IIIb cross section of Fig.3 (a). 図３（ａ）のＩＶ領域の詳細を示す断面図（部分拡大図を含む）Sectional drawing which shows the detail of the IV area|region of FIG.3(a) (a partial enlarged view is included). 二重巻き構造の蓋ヒータの別実施形態を示す断面図（部分拡大図を含む）Sectional drawing (including a partially enlarged view) which shows another embodiment of the lid heater of a double winding structure.

以下、本発明の実施の形態を図面に従って説明する。 Embodiments of the present invention will be described below with reference to the drawings.

図１は、本発明に係る実施形態の加熱調理器である圧力式の炊飯器１００を示す。
この炊飯器１００は、上端開口の有底筒状をなす内鍋（調理鍋）１０を着脱可能に収容する炊飯器本体（調理器本体）１１と、炊飯器本体１１に開閉可能に取り付けられた蓋体１９とを備えている。 FIG. 1 shows a pressure type rice cooker 100 which is a heating cooker according to an embodiment of the present invention.
This rice cooker 100 is attached to a rice cooker main body (cooker main body) 11 that detachably accommodates a bottomed cylindrical inner pan (cooking pan) 10 having an upper end opening, and an openable/closable rice cooker main body 11. And a lid 19.

炊飯器本体１１は、上下端を開口した筒状をなす胴体１２と、胴体１２の下端開口を閉塞する底体１３と、胴体１２の上端開口を覆うように取り付けた肩体１４とからなる外装体を備えている。肩体１４の略中央には開口部が設けられ、この開口部の下側が、内鍋１０の収容部とされている。内鍋１０の下には、内鍋１０の底を誘導加熱する本体側加熱手段である誘導加熱コイル１５が配置されている。 The rice cooker main body 11 includes an outer casing including a tubular body 12 having upper and lower ends opened, a bottom body 13 closing the lower end opening of the body 12, and a shoulder body 14 attached so as to cover the upper end opening of the body 12. It has a body. An opening is provided in the substantially central portion of the shoulder body 14, and the lower side of this opening serves as a housing portion for the inner pot 10. Below the inner pot 10, an induction heating coil 15, which is a main body side heating means for inductively heating the bottom of the inner pot 10, is arranged.

蓋体１９は、上板２０と下板２１とを有する外装体を備え、炊飯器本体１１の上部を覆うものである。上板２０の正面側には、蓋体１９を開放するための開放操作部材２２が配設され、その内部に炊飯器本体１１への閉塞状態を維持するためのロック機構（図示省略）が設けられている。下板２１は、炊飯器本体１１の背部に形成されたヒンジ接続部２３に回転可能に装着されている。 The lid 19 includes an exterior body having an upper plate 20 and a lower plate 21, and covers the upper part of the rice cooker body 11. An opening operation member 22 for opening the lid 19 is provided on the front side of the upper plate 20, and a lock mechanism (not shown) for maintaining the closed state of the rice cooker body 11 is provided therein. Has been. The lower plate 21 is rotatably attached to a hinge connection portion 23 formed on the back of the rice cooker body 11.

図１に示す閉状態で内鍋１０の側に位置する下板２１の下（内）側面には放熱板２４が配設されている。そして、放熱板２４の上側面には、内鍋１０内を加熱する蓋体側加熱手段である蓋ヒータ２５が配設されている。後述するように、この蓋ヒータ２５は、各構成部品を配設するための蒸気通路用貫通孔２４ａを避けて迂回するように配設されている。 A heat radiating plate 24 is disposed on the lower (inner) side surface of the lower plate 21 located on the inner pan 10 side in the closed state shown in FIG. A lid heater 25, which is a lid-side heating means for heating the inside of the inner pot 10, is disposed on the upper surface of the heat dissipation plate 24. As will be described later, the lid heater 25 is arranged so as to avoid the steam passage through hole 24a for arranging each component and to bypass the steam passage through hole 24a.

内鍋１０を臨む放熱板２４の内面側には、内鍋１０の上端開口を閉塞する内蓋２７が着脱可能に配設されている。この内蓋２７は放熱板２４より大きい金属板からなり、外周部に内鍋１０の上端開口の内周部を密閉するシール部材２８が枠部材２９を介して固定されている。枠部材２９には、下板２１に形成した被係合部（図示省略）に係合される係合部（図示省略）が設けられている。本実施形態では、この内蓋２７の内鍋１０側（下側）に内蓋カバー６６を設けているが、内蓋カバー６６に関しては後述する。 An inner lid 27 that closes the upper end opening of the inner pot 10 is detachably disposed on the inner surface side of the heat dissipation plate 24 that faces the inner pot 10. The inner lid 27 is made of a metal plate larger than the heat radiating plate 24, and a seal member 28 for sealing the inner peripheral portion of the upper end opening of the inner pot 10 is fixed to the outer peripheral portion through a frame member 29. The frame member 29 is provided with an engaging portion (not shown) that is engaged with an engaged portion (not shown) formed on the lower plate 21. In the present embodiment, the inner lid cover 66 is provided on the inner pot 10 side (lower side) of the inner lid 27, but the inner lid cover 66 will be described later.

蓋体１９の下部、内蓋２７の上には、内鍋１０の内部で発生した蒸気ｓを外部に排気するための蒸気通路３２が形成されている。通常状態においては、この蒸気通路３２の入口は、内蓋２７に配設した低圧側の調圧弁４３の連通孔４６となる。 A steam passage 32 for discharging the steam s generated inside the inner pot 10 to the outside is formed on the lower portion of the lid body 19 and on the inner lid 27. In the normal state, the inlet of the steam passage 32 serves as the communication hole 46 of the low pressure side pressure regulating valve 43 arranged in the inner lid 27.

さて、図１は、炊飯器１００において低圧側の調圧弁４３が配置された幅方向の断面を示している。一方、図２は、内蓋２７、内蓋カバー６６を取外した状態における放熱板２４を内鍋１０側から見た図である。これら図１、図２に、内鍋１０で発生する蒸気ｓの流れを示した。 Now, FIG. 1 shows a cross section in the width direction in which the pressure regulating valve 43 on the low pressure side is arranged in the rice cooker 100. On the other hand, FIG. 2 is a view of the radiator plate 24 with the inner lid 27 and the inner lid cover 66 removed, as seen from the inner pot 10 side. The flow of the steam s generated in the inner pot 10 is shown in FIGS. 1 and 2.

本実施形態の炊飯器１００には、内蓋２７に、図１に断面で示す低圧側の調圧弁４３が装着される他、高圧側の調圧弁４３ｈが、低圧側の調圧弁４３の同図裏側に備えられる。図２において、蒸気ｓの流れ方向である蒸気通路３２に関して、各調圧弁４３、４３ｈを仮想線（二点鎖線）で示した。 In the rice cooker 100 of the present embodiment, the low pressure side pressure regulating valve 43 shown in cross section in FIG. 1 is attached to the inner lid 27, and the high pressure side pressure regulating valve 43h is the same as the low pressure side pressure regulating valve 43. Prepared on the back side. In FIG. 2, each pressure regulating valve 43, 43h is shown by an imaginary line (two-dot chain line) with respect to the steam passage 32 which is the flow direction of the steam s.

内蓋２７の上に形成される蒸気通路３２は、各調圧弁４３、４３ｈに対する弁収容室としての第１室３２ａと、この第１室３２ａに下流側でつながる第２室３２ｂとを、炊飯器１００の前後方向（図１の左右方向）に備えて構成されている。そして、この第２室３２ｂの蒸気通路３２の下手側に蓋体１９を貫通して排気路３５を設け、その外部端である排気口３６から蒸気ｓを排気するように構成されている。 The steam passage 32 formed on the inner lid 27 includes a first chamber 32a as a valve accommodating chamber for the pressure regulating valves 43 and 43h, and a second chamber 32b connected to the first chamber 32a on the downstream side. It is configured to be provided in the front-back direction (the left-right direction in FIG. 1) of the container 100. An exhaust passage 35 is provided on the lower side of the steam passage 32 of the second chamber 32b so as to penetrate the lid 19, and the steam s is exhausted from an exhaust port 36 which is an outer end thereof.

また、図２からも判明するように、第１室３２ａは、図１に示す調圧弁４３（低圧側の調圧弁）を収容する低圧側第１室３２ａ１と高圧側の調圧弁４３ｈを収容する高圧側第１室３２ａ２を備えて構成されている。
各室間に渡る蒸気ｓの経路は、通常状態では、概略、低圧側の調圧弁４３、低圧側第１室３２ａ１、高圧側第１室３２ａ２、第２室３２ｂとなる。 Further, as is clear from FIG. 2, the first chamber 32a houses the low pressure side first chamber 32a1 which houses the pressure regulating valve 43 (low pressure side pressure regulating valve) shown in FIG. 1 and the high pressure side pressure regulating valve 43h. The high pressure side first chamber 32a2 is provided.
In a normal state, the path of the steam s passing between the chambers is roughly the low-pressure side pressure regulating valve 43, the low-pressure side first chamber 32a1, the high-pressure side first chamber 32a2, and the second chamber 32b.

内鍋１０内の圧力が過度に上昇した場合は、上記の経路を経る流れとともに、直接高圧側の調圧弁４３ｈから高圧側第１室３２ａ２に蒸気ｓが流入し、第２室３２ｂに流入する。 When the pressure in the inner pot 10 rises excessively, the steam s directly flows from the high pressure side pressure regulating valve 43h into the high pressure side first chamber 32a2 and flows into the second chamber 32b along with the flow passing through the above path. ..

本実施形態の炊飯器１００に関して、通常状態における蒸気ｓの流れを説明すると、内鍋１０内の蒸気ｓは、内蓋カバー６６を介して内蓋カバー６６と内蓋２７との間に流入し、この内蓋２７に備えられた調圧弁４３内を通って、第１室３２ａ内に流入する。具体的には、低圧側の調圧弁４３から低圧側第１室３２ａ１に流入し、図１の紙面裏方向である炊飯器幅方向に流れ、高圧側の調圧弁４３ｈを収容する高圧側第１室３２ａ２に流入する。これら室３２ａ１，３２ａ２間の移流は、内蓋２７の上側近傍としている。その後、高圧側第１室３２ａ２内を上昇する蒸気ｓは、この室３２ａ２の天面に設けられた開口ｈｏから上側に抜けるとともに、炊飯器１００の後側に流れ、第２室３２ｂに流入する。そして、この第２室３２ｂを通って上板２０に着脱可能に配設した排気路３５に流入し、この排気路３５内を通って、排気口３６から外部へ排出される。
即ち、本実施形態では、蒸気通路３２は、内蓋２７の上部に第１室（低圧側第１室３２ａ１、高圧側第１室３２ａ２）、第２室３２ｂおよび排気路３５を経る経路とされている。ここで、この蒸気通路３２は、低圧側第１室３２ａ１，高圧側第１室３２ａ２間の移流は、内蓋２７の上側近傍とされ、高圧側第１室３２ａ２、第２室３２ｂ間の移流は、高圧側第１室３２ａ２の天面に設けられた開口ｈｏを介するとともに、その開口ｈｏから後方に位置する第２室３２ｂへの流れとなるため、複雑な屈曲経路でできている。 Regarding the rice cooker 100 of the present embodiment, the flow of the steam s in the normal state will be described. The steam s in the inner pot 10 flows between the inner lid cover 66 and the inner lid 27 via the inner lid cover 66. , Through the pressure regulating valve 43 provided in the inner lid 27, and flows into the first chamber 32a. Specifically, the low pressure side pressure regulating valve 43 flows into the low pressure side first chamber 32a1 and flows in the rice cooker width direction which is the back side of the paper surface of FIG. 1 to accommodate the high pressure side pressure regulating valve 43h. It flows into the chamber 32a2. The advection between these chambers 32a1 and 32a2 is near the upper side of the inner lid 27. After that, the steam s rising in the high pressure side first chamber 32a2 escapes upward through an opening ho provided on the top surface of the chamber 32a2, flows to the rear side of the rice cooker 100, and flows into the second chamber 32b. .. Then, it passes through the second chamber 32b, flows into the exhaust passage 35 that is detachably arranged on the upper plate 20, passes through the exhaust passage 35, and is discharged from the exhaust port 36 to the outside.
That is, in the present embodiment, the steam passage 32 is a path that passes through the first chamber (the low-pressure side first chamber 32a1, the high-pressure side first chamber 32a2), the second chamber 32b, and the exhaust passage 35 above the inner lid 27. ing. In this steam passage 32, the advection between the low pressure side first chamber 32a1 and the high pressure side first chamber 32a2 is near the upper side of the inner lid 27, and the advection between the high pressure side first chamber 32a2 and the second chamber 32b. Flows through the opening ho provided on the top surface of the high-pressure side first chamber 32a2 and flows from the opening ho to the second chamber 32b located at the rear side, and thus has a complicated bending path.

蒸気通路３２の入口に設ける弁機構に関して低圧側の調圧弁４３を例に説明する。
図１に示すように、内蓋２７には、その上面側に調圧弁４３が配設され、これらによって内鍋１０内を大気圧より高い設定圧力に昇圧可能としている。 The valve mechanism provided at the inlet of the steam passage 32 will be described by taking the pressure adjusting valve 43 on the low pressure side as an example.
As shown in FIG. 1, a pressure regulating valve 43 is provided on the upper surface side of the inner lid 27, and these can increase the pressure inside the inner pot 10 to a set pressure higher than atmospheric pressure.

調圧弁４３は、内蓋２７上に構成される第１室３２ａ（具体的には低圧側第１室３２ａ１）内で内蓋２７の上部に配設している。調圧弁４３は内蓋２７に対して内鍋１０の側である下側から配設される弁座４５を備え、この弁座４５にカバー４８を設けている。カバー４８には、低圧側第１室３２ａ１に連通する通気孔４９が設けられている。 The pressure regulating valve 43 is arranged above the inner lid 27 in the first chamber 32a (specifically, the low pressure side first chamber 32a1) formed on the inner lid 27. The pressure regulating valve 43 includes a valve seat 45 arranged from the lower side, which is the inner pan 10 side with respect to the inner lid 27, and a cover 48 is provided on the valve seat 45. The cover 48 is provided with a vent hole 49 communicating with the low pressure side first chamber 32a1.

さらに、調圧弁４３には、カバー４８の内部に連通孔４６を閉塞するための弁体５１と、この弁体５１を閉塞位置（下向き）に移動させる作動受部材５２と、これらの間に配設したスプリング５３とを備えている。
弁体５１は、駆動手段であるステッピングモータＭの駆動により作動受部材５２が下向きに移動されると、スプリング５３を介して弁体５１で連通孔４６を閉塞する。また、作動受部材５２の移動量（付勢力）の調節により、１．００〜１．３０ａｔｍの範囲で、内鍋１０内を昇圧可能である。 Further, in the pressure regulating valve 43, a valve body 51 for closing the communication hole 46 inside the cover 48, an operation receiving member 52 for moving the valve body 51 to the closed position (downward), and an arrangement between them are provided. And the installed spring 53.
The valve body 51 closes the communication hole 46 with the valve body 51 via the spring 53 when the operation receiving member 52 is moved downward by the driving of the stepping motor M which is the driving means. Further, by adjusting the movement amount (biasing force) of the operation receiving member 52, the pressure inside the inner pan 10 can be increased within the range of 1.00 to 1.30 atm.

一方、高圧側の調圧弁４３ｈに関しては、その配設位置は先に説明した高圧側第１室３２ａ２とされ、内蓋２７の上部に配設される点において同様である。図示省略の弁座、カバー、高圧側第１室３２ａ２に連通する通気孔を備えている点においても変わりはない。ただし、高圧側の調圧弁４３ｈは、内鍋１０内の圧力が最高圧に達した場合に弁を開放する機能から、通常状態で弁座に当接して弁を閉状態とするとともに、内鍋１０内の圧力が上昇した場合に、その蒸気圧で浮き上がるボール状の錘（図示省略）を備え、この錘が浮き上がった状態で高圧側の調圧弁４３ｈは開状態となる。高圧側の調圧弁４３ｈの調整圧（閉状態から開状態となる場合の圧力）は、低圧側の調圧弁４３の最高調整圧、上記の例では、１．３０ａｔｍとできる。 On the other hand, the high pressure side pressure regulating valve 43h is the same in that the arrangement position thereof is the high pressure side first chamber 32a2 described above, and is arranged above the inner lid 27. There is no difference in that the valve seat, the cover, and the ventilation hole (not shown) that communicate with the first chamber 32a2 on the high-pressure side are provided. However, the pressure regulating valve 43h on the high-pressure side has a function of opening the valve when the pressure in the inner pot 10 reaches the maximum pressure, so that the valve is closed by abutting against the valve seat in the normal state and the inner pot is closed. A ball-shaped weight (not shown) that floats up by the vapor pressure when the pressure inside 10 rises is provided, and the high-pressure side pressure regulating valve 43h is opened in the state where this weight floats up. The adjustment pressure of the high-pressure side pressure regulating valve 43h (the pressure when the closed state changes to the open state) can be set to the maximum adjustment pressure of the low-pressure side pressure regulating valve 43, which is 1.30 atm in the above example.

前記内蓋カバー６６は、内蓋２７における内鍋１０内を臨む側に装着され、蒸気通路３２の入口である調圧弁４３の連通孔４６が目詰まりすることを防止するものである。この内蓋カバー６６はステンレス製であり、平面視において蓋ヒータ２５の下側を覆うように、放熱板２４と略同一直径の円板状に形成されている。 The inner lid cover 66 is mounted on the side of the inner lid 27 that faces the inside of the inner pot 10, and prevents the communication hole 46 of the pressure regulating valve 43, which is the inlet of the steam passage 32, from being clogged. The inner lid cover 66 is made of stainless steel, and is formed in a disc shape having substantially the same diameter as the heat radiating plate 24 so as to cover the lower side of the lid heater 25 in a plan view.

先にも説明したように、内鍋１０を加熱することにより発生した蒸気ｓは、内蓋カバー６６の側部に設けられた通気部７１から内蓋カバー６６内に流入する。 As described above, the steam s generated by heating the inner pot 10 flows into the inner lid cover 66 from the ventilation portion 71 provided on the side portion of the inner lid cover 66.

以上が、本発明に係る炊飯器１００（加熱調理器の一例）の概要である。
従って、この加熱調理器は以下の構造を備えている。 The above is the outline of the rice cooker 100 (an example of a heating cooker) according to the present invention.
Therefore, this heating cooker has the following structure.

以下、本発明の対象である、蓋ヒータ２５の放熱板２４への取付け構造である「放熱板加熱構造」に関して説明する。
図３からも判明するように、放熱板２４は、内蓋２７の上面に沿った放熱面部位２４ｂと、当該放熱面部位２４ｂの外周近傍から蓋体１９側に立ち上る外周壁部位２４ｃとを備えている。蒸気通路３２が貫通する蒸気通路用貫通孔２４ａは、放熱面部位２４ｂを貫通して構成されており、その貫通形状は、先に説明した蒸気通路３２を成す第１室３２ａ、第２室３２ｂを形成する部材が内径側に位置される形状とされている。 Hereinafter, the “radiating plate heating structure”, which is the structure for attaching the lid heater 25 to the radiating plate 24, which is the object of the present invention, will be described.
As can be seen from FIG. 3, the heat dissipation plate 24 includes a heat dissipation surface portion 24b along the upper surface of the inner lid 27, and an outer peripheral wall portion 24c rising from the vicinity of the outer periphery of the heat dissipation surface portion 24b to the lid 19 side. ing. The steam passage through hole 24a through which the steam passage 32 penetrates is configured to penetrate through the heat dissipation surface portion 24b, and the penetration shape is the first chamber 32a and the second chamber 32b that form the steam passage 32 described above. The member forming the is formed in a shape positioned on the inner diameter side.

図３（ｂ）の右側及び図４に示す、ＩＩＩｂ−ＩＩＩｂ断面図からも判明するように、蒸気通路用貫通孔２４ａの外周側端部から放熱板２４の外周壁部位２４ｃまでの余裕は極めて制限される。 As can be seen from the right side of FIG. 3B and the sectional view taken along line IIIb-IIIb shown in FIG. 4, the margin from the outer peripheral side end of the steam passage through hole 24a to the outer peripheral wall portion 24c of the heat dissipation plate 24 is extremely large. Limited.

本発明に係る蓋ヒータ２５は、所要の加熱量を得るためのヒータ長とされており、一対の接続端子２５ａを介して、温度センサ２５ｂとしてのサーミスタ、温度ヒューズ２５ｃが備えられている。さらにその両端に外部接続端子２５ｄが備えられている。 The lid heater 25 according to the present invention has a heater length for obtaining a required heating amount, and is provided with a thermistor as a temperature sensor 25b and a temperature fuse 25c via a pair of connection terminals 25a. Furthermore, external connection terminals 25d are provided at both ends thereof.

図４にも示すように、蓋ヒータ２５は、通電状態で発熱するヒータ線Ｈｗと、少なくともヒータ線Ｈｗを覆うアルミニウム箔である伝熱材料部Ｈａとを有して構成され、この伝熱材料部Ｈａが、ヒータ線Ｈｗを周回する周回部Ｈａ１と当該ヒータ線Ｈｗの一側部に張り出す張り出し部Ｈａ２とを備え、当該張り出し部Ｈａ２を介して放熱板２４の外周壁部位２４ｃに取付けられている。当該周回部Ｈａ１は一部が放熱面部位２４ｂに接している。本発明では、この加熱部を「外周壁加熱部Ｚ１」と呼ぶ。この実施形態では、取付けは両面粘着テープＴを使用している。 As shown in FIG. 4, the lid heater 25 is configured to include a heater wire Hw that generates heat in an energized state and a heat transfer material portion Ha that is an aluminum foil that covers at least the heater wire Hw. The portion Ha includes a winding portion Ha1 that goes around the heater wire Hw and a projecting portion Ha2 that projects to one side of the heater wire Hw, and is attached to the outer peripheral wall portion 24c of the heat dissipation plate 24 via the projecting portion Ha2. ing. A part of the circulating portion Ha1 is in contact with the heat radiation surface portion 24b. In the present invention, this heating unit is referred to as "outer peripheral wall heating unit Z1". In this embodiment, the attachment uses a double-sided adhesive tape T.

一方、図３からも判明するように、外周壁加熱部Ｚ１を外れた周壁近傍に、前記外周壁加熱部Ｚ１との別の対向側加熱部Ｚ２が備えられ、先に説明した接続端子２５ａを介して、温度センサ２５ｂとしてのサーミスタ、温度ヒューズ２５ｃ等を配設している。 On the other hand, as can be seen from FIG. 3, in the vicinity of the peripheral wall outside the outer peripheral wall heating section Z1, another side heating section Z2 opposite to the outer peripheral wall heating section Z1 is provided, and the connecting terminal 25a described above is provided. A thermistor serving as the temperature sensor 25b, a temperature fuse 25c, and the like are disposed therethrough.

炊飯が終了した後の保温時には、蓋ヒータ２５の下側を覆うように内蓋カバー６６を設けているため、蓋ヒータ２５の熱が米飯に直接加わることはない。そのため、米飯からの過剰な水分の放出を抑制できる。しかも、内蓋カバー６６の上面（内蓋２７との間）には、むらし工程での蒸気や保温中の蒸気による結露水が付着する場合があるが、蓋ヒータ２５の加熱量を適切に調整することで、過度に結露水が発生することを防止できる。炊飯過程において、適度の水分量を調整して、米飯の潤いも確保できる。 Since the inner lid cover 66 is provided so as to cover the lower side of the lid heater 25 when the temperature is kept after the rice is cooked, the heat of the lid heater 25 is not directly applied to the cooked rice. Therefore, excessive release of water from cooked rice can be suppressed. Moreover, dew condensation water due to steam in the purging process or steam during heat retention may adhere to the upper surface of the inner lid cover 66 (between the inner lid 27). By adjusting, it is possible to prevent excessive condensation water. In the process of cooking rice, the proper amount of water can be adjusted to ensure the moisture of cooked rice.

〔別実施形態〕
なお、本発明の加熱調理器は、前記実施形態の構成に限定されるものではなく、種々の変更が可能である。 [Another embodiment]
The heating cooker of the present invention is not limited to the configuration of the above embodiment, and various modifications can be made.

（１） 先にも示したように、本発明の一の課題は、ヒータ長の確保にあるため、外周壁加熱部Ｚ１の内周側に、通電状態で発熱するヒータ線Ｈｗと、少なくともヒータ線Ｈｗを覆う伝熱材料部Ｈａとを有して構成し、別の内周側加熱部Ｚ３を備えてもよい。この別実施形態を図５に示した。 (1) As described above, since one object of the present invention is to secure the heater length, the heater wire Hw that generates heat in the energized state and at least the heater is provided on the inner peripheral side of the outer peripheral wall heating unit Z1. It may be configured to have the heat transfer material portion Ha that covers the wire Hw, and may be provided with another inner circumferential side heating portion Z3. This alternative embodiment is shown in FIG.

（２） 前記実施形態では、調圧弁４３，４３ｈを搭載したが、一方の調圧弁だけを設けた構成としてもよい。勿論、調圧弁４３，４３ｈを搭載しない非圧力式の炊飯器としても、本発明の構成は有効である。ただし、本発明においては、蓋体１９の下、内蓋２７の上に設ける蒸気通路３２が複雑化され、蒸気ｓとともに、蒸気通路３２に流入してくるおねば等の液状有用物質を分離可能な構造を採用するものとする。 (2) In the above embodiment, the pressure regulating valves 43 and 43h are mounted, but it is also possible to provide only one pressure regulating valve. Of course, the configuration of the present invention is also effective as a non-pressure type rice cooker in which the pressure regulating valves 43 and 43h are not mounted. However, in the present invention, the vapor passage 32 provided under the lid body 19 and on the inner lid 27 is complicated, and liquid useful substances such as a bed and the like flowing into the vapor passage 32 can be separated together with the vapor s. The structure shall be adopted.

（３） 前記実施形態では、内蓋カバー６６を搭載したが、内蓋カバーを搭載することのない構成であってもよい。 (3) In the above-described embodiment, the inner lid cover 66 is mounted, but the inner lid cover may not be mounted.

（４） 前記実施形態では、伝熱材料部Ｈａの外周壁部位２４ｃへの取り付けに両面粘着テープＴを使用する例を示したが、この取り付けに使用する手段は、如何なる手段であってもよい。 (4) In the above embodiment, an example in which the double-sided adhesive tape T is used to attach the heat transfer material portion Ha to the outer peripheral wall portion 24c has been described, but any means may be used for this attachment. ..

（５） さらに、前記実施形態では、炊飯器を例に挙げて説明したが、所定の調理物を加熱して調理する加熱調理器であれば同様に適用可能であり、同様の作用および効果を得ることができる。 (5) Furthermore, although the rice cooker has been described as an example in the above-described embodiment, a heating cooker that heats and cooks a predetermined cooking product can be similarly applied, and the same operation and effect can be obtained. Obtainable.

１０ 内鍋（調理鍋）
１１ 炊飯器本体（調理器本体）
１５ 誘導加熱コイル（本体側加熱手段）
１９ 蓋体
２４ 放熱板
２４ａ 蒸気通路用貫通孔
２４ｂ 放熱面部位
２４ｃ 外周壁部位
２５ 蓋ヒータ（蓋体側加熱手段）
２７ 内蓋
３２ 蒸気通路
３２ａ 第１室
３２ａ１ 低圧側第１室（第１室）
３２ａ２ 高圧側第１室（第１室）
３２ｂ 第２室
４３ 低圧側の調圧弁（調圧弁）
４３ｈ 高圧側の調圧弁（調圧弁）
４６ 連通孔
Ｈｗ ヒータ線
Ｈａ アルミニウム箔（伝熱材料部）
Ｈａ１ 周回部
Ｈａ２ 張り出し部
Ｚ１ 外周壁加熱部
Ｚ２ 対向側加熱部
Ｚ３ 内周側加熱部
ｓ 蒸気

10 Inner pot (cooking pot)
11 Rice cooker body (cooker body)
15 Induction heating coil (main body side heating means)
19 Lid 24 Radiating Plate 24a Steam Pass Through Hole 24b Radiating Surface Portion 24c Peripheral Wall Region 25 Lid Heater (Lid Side Heating Means)
27 Inner lid 32 Steam passage 32a First chamber 32a1 Low pressure side first chamber (first chamber)
32a2 High pressure side first chamber (first chamber)
32b 2nd chamber 43 Pressure regulating valve on low pressure side (pressure regulating valve)
43h Pressure regulator on high pressure side (pressure regulator)
46 Communication hole Hw Heater wire Ha Aluminum foil (heat transfer material part)
Ha1 Revolving part Ha2 Overhanging part Z1 Outer peripheral wall heating part Z2 Opposing side heating part Z3 Inner peripheral side heating part s Steam

Claims (2)

上端開口の調理鍋が配設される調理器本体と、
前記調理器本体の上端開口を開閉可能に構成され、前記上端開口を閉じた閉姿勢において、前記調理鍋内と外部とを連通する蒸気通路が貫通する蓋体と、
前記蒸気通路の入口を構成する連通孔を有し、前記蓋体の前記調理鍋内を臨む側に備えられ、前記調理鍋の上端開口を密閉する内蓋とを備え、
前記内蓋の上面に沿った放熱面部位と、当該放熱面部位の外周近傍から蓋体側に立ち上る外周壁部位とを備え、前記蒸気通路が貫通する蒸気通路用貫通孔を備えた放熱板を備え、前記放熱板の上面に蓋体側加熱手段を備えた加熱調理器の放熱板加熱構造であって、
前記蓋体側加熱手段の加熱部が、通電状態で発熱するヒータ線と、少なくとも前記ヒータ線を覆う伝熱材料部とを備えて構成され、前記伝熱材料部が、前記ヒータ線を周回する周回部と当該ヒータ線の一側に張り出す張り出し部とを備え、前記ヒータ線が当該張り出し部を介して前記放熱板の前記外周壁部位に取付けられる構成で、
内周側に前記蒸気通路用貫通孔を備えた一方の外周壁加熱部において、前記ヒータ線を前記放熱面部位に近接位置させ、前記張り出し部を前記放熱面部位から離間させる形態で、前記外周壁部位と前記蒸気通路用貫通孔との間に、単一の前記ヒータ線が前記張り出し部を介して前記外周壁部位に取付けられ、
前記蒸気通路用貫通孔を挟んで前記一方の外周壁加熱部に対向する部位に対向側加熱部を備え、
前記対向側加熱部に設けられる他方の外周壁加熱部の内周側に内周側加熱部を備えるとともに温度センサ及び温度ヒューズを備えている放熱板加熱構造。 A cooker body in which a cooking pot with an upper opening is arranged,
A lid body configured to be able to open and close an upper end opening of the cooker body, and in a closed posture in which the upper end opening is closed, a steam passage that communicates the inside and the outside of the cooking pot,
It has a communication hole that constitutes the inlet of the steam passage, is provided on the side of the lid facing the inside of the cooking pot, and comprises an inner lid for sealing the upper end opening of the cooking pot,
A heat dissipation surface portion along the upper surface of the inner lid; an outer peripheral wall portion rising from the vicinity of the outer periphery of the heat dissipation surface portion to the lid side; and a heat dissipation plate having a steam passage through hole through which the steam passage penetrates. A radiator plate heating structure of a heating cooker having a lid side heating means on an upper surface of the radiator plate,
The heating portion of the lid side heating means is configured to include a heater wire that generates heat in an energized state, and a heat transfer material portion that covers at least the heater wire, and the heat transfer material portion circulates around the heater wire. and a projecting portion projecting on one side of the parts and the heater wire, in the configuration wherein the heater wire is that attached to the outer peripheral wall portion of the heat radiating plate via the projecting portion,
In the one outer peripheral wall heating part having the through hole for the steam passage on the inner peripheral side, the heater wire is located close to the heat dissipation surface part, and the projecting part is separated from the heat dissipation surface part. Between the wall portion and the steam passage through hole, the single heater wire is attached to the outer peripheral wall portion via the projecting portion,
An opposing heating unit is provided at a portion facing the one outer peripheral wall heating unit with the steam passage through-hole interposed therebetween.
A radiator plate heating structure comprising an inner peripheral side heating section on the inner peripheral side of the other outer peripheral wall heating section provided in the opposite side heating section, and a temperature sensor and a temperature fuse . 前記内周側加熱部が、通電状態で発熱するヒータ線と、前記ヒータ線を覆う伝熱材料部とを有して構成される請求項１記載の放熱板加熱構造。 The heat dissipation plate heating structure according to claim 1, wherein the inner circumferential side heating unit is configured to include a heater wire that generates heat when energized and a heat transfer material portion that covers the heater wire.

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