JP5554049B2 - Aluminum foil container for electromagnetic cooker - Google Patents

Aluminum foil container for electromagnetic cooker Download PDF

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JP5554049B2
JP5554049B2 JP2009263397A JP2009263397A JP5554049B2 JP 5554049 B2 JP5554049 B2 JP 5554049B2 JP 2009263397 A JP2009263397 A JP 2009263397A JP 2009263397 A JP2009263397 A JP 2009263397A JP 5554049 B2 JP5554049 B2 JP 5554049B2
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container
aluminum foil
bottom plate
embossed
electromagnetic cooker
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JP2011104176A (en
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達也 持田
泰嗣 水本
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Mitsubishi Aluminum Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description

本発明は、電磁調理器用アルミニウム箔容器に係り、特に、底板部にエンボス加工が施されてなるアルミニウム箔容器に関する。   The present invention relates to an aluminum foil container for an electromagnetic cooker, and more particularly to an aluminum foil container in which a bottom plate portion is embossed.

電磁調理器は、内部に埋め込んだコイルによる電磁誘導加熱の原理を利用して鍋等の金属容器を加熱して調理する装置であり、ＩＨ調理器とも呼ばれている。この場合、電磁調理可能な金属容器としては、強磁性で電気抵抗の大きい鉄、鉄鋳物、マルテンサイト系ステンレス鋼などが適している。アルミニウムやアルミニウム合金は、非磁性で鉄等に比べて電気抵抗が小さいので、電磁調理器用には不適とされていたが、加熱コイルの周波数の増大等によって電磁調理できるようになってきた。   An electromagnetic cooker is a device that heats and cooks a metal container such as a pan using the principle of electromagnetic induction heating by a coil embedded therein, and is also called an IH cooker. In this case, iron, iron casting, martensitic stainless steel, and the like that are ferromagnetic and have high electric resistance are suitable as the metal container capable of electromagnetic cooking. Aluminum and aluminum alloys are non-magnetic and have a lower electrical resistance than iron or the like, so they have been unsuitable for electromagnetic cookers. However, electromagnetic cooking has become possible by increasing the frequency of the heating coil.

このような電磁調理器用アルミニウム箔容器として、従来では特許文献１〜３に記載のものがある。
特許文献１記載のアルミニウム箔容器は、底壁とその周縁から立ち上る周壁からなり、底壁の面積が約７０ｃｍ２〜２５５ｃｍ２とされ、かつ底壁にエンボスが形成されている。７０ｃｍ２未満では電磁調理による加熱ができず、２５５ｃｍ２を超えると強度が不充分になるとされている。また、そのアルミニウム箔は、必要な電気抵抗を得るために、０．１５〜０．３５重量％のＳｉと、２．２〜２．８重量％のＭｇと、０．１０〜０．３５重量％のＣｒと、合計で１．５重量％以下の微量元素と、残部がＡｌより成る組成とされている。 Conventionally, as such an aluminum foil container for an electromagnetic cooker, there are those described in Patent Documents 1 to 3.
Aluminum foil container described in Patent Document 1 consists of a peripheral wall which rises from the bottom wall and a peripheral area of the bottom wall is about 70cm 2 ~255cm 2, and embossing is formed in the bottom wall. Is less than 70cm 2 can not heating by electromagnetic range, there is a strength exceeding 255 cm 2 becomes insufficient. Further, the aluminum foil has 0.15 to 0.35 wt% Si, 2.2 to 2.8 wt% Mg, and 0.10 to 0.35 wt% in order to obtain a necessary electric resistance. % Cr, a total of 1.5% by weight or less of trace elements, and the balance being Al.

また、特許文献２記載のアルミニウム箔容器は、その少なくとも底部が厚み２０〜８０μｍの２枚以上の箔を積層して構成されており、これら積層された箔同士は、底部の一部において互いに接触し、箔同士が接触した接触部と、非接触部とが形成されている。その接触部面積は、底部面積の６０％以下とされ、電磁誘導加熱時の電流の表皮効果を高めるようにしている。   Moreover, the aluminum foil container described in Patent Document 2 is configured by laminating two or more foils having a thickness of 20 to 80 μm at least at the bottom, and the laminated foils are in contact with each other at a part of the bottom. However, a contact portion where the foils are in contact with each other and a non-contact portion are formed. The area of the contact portion is set to 60% or less of the bottom area, so that the skin effect of current during electromagnetic induction heating is enhanced.

特許文献３記載のアルミニウム箔容器は、１００質量％中に、９３質量％以上のＡｌと、２〜５質量％のＭｇと、０．２〜１．０質量％のＣｒと、０．０１〜３．０質量％のＭｎと、０．００５〜０．６質量％のＴｉと、０．００５質量％以下のＣｕと、０．１質量％以下のＳｉと、０．２質量％以下のＦｅとを含有し、電気比抵抗値が５〜１０μΩｃｍであるアルミニウム合金からアルミニウム箔を形成し、このアルミニウム箔をプレス成形して、底壁と周壁とフランジとを有する容器としている。アルミニウム箔単体で、成形性、耐食性に優れ、電磁調理器による加熱に好適であるとされている。   The aluminum foil container described in Patent Document 3 includes 93% by mass or more of Al, 2 to 5% by mass of Mg, 0.2 to 1.0% by mass of Cr, and 0.01 to 100% by mass. 3.0 mass% Mn, 0.005-0.6 mass% Ti, 0.005 mass% or less Cu, 0.1 mass% or less Si, and 0.2 mass% or less Fe An aluminum foil is formed from an aluminum alloy having an electrical resistivity of 5 to 10 μΩcm, and the aluminum foil is press-molded to form a container having a bottom wall, a peripheral wall, and a flange. The aluminum foil itself is excellent in formability and corrosion resistance and is suitable for heating with an electromagnetic cooker.

特開２００３−１５３８０２号公報JP 2003-153802 A 特開２００４−３７９号公報JP 2004-379 A 特開２００７−２７０３５１号公報JP 2007-270351 A

いずれの特許文献記載の技術も、アルミニウム合金の組成や容器の底面積の大きさ、厚さ等により、電磁調理器での加熱を良好にする工夫がなされているが、さらなる改良が求められている。   In any of the technologies described in the patent documents, the device for improving the heating in the electromagnetic cooker has been made depending on the composition of the aluminum alloy, the size of the bottom area of the container, the thickness, etc., but further improvement is required. Yes.

本発明は、前記事情に鑑みてなされたもので、電磁調理器による発熱効率を向上させたアルミニウム箔容器の提供を目的とする。   This invention is made | formed in view of the said situation, and aims at provision of the aluminum foil container which improved the heat_generation | fever efficiency by an electromagnetic cooker.

本発明は、底板部とその周縁から立ち上がる周壁部とを備えるアルミニウム箔からなる電磁調理器用の容器であって、前記底板部に、その外底面を内側に向けて凹状に窪ませてなるエンボス部が形成されるとともに、該エンボス部は、線条又は複数の線条の組み合わせからなり、前記底板部の中心に対して放射状に形成される放射エンボス部と、前記底板部の周縁部に沿う方向に形成される周エンボス部とを備え、これらエンボス部を除く前記底板部の前記電磁調理器と接する平面部によって占められる平面積が、前記底板部全体の平面積の２０〜９５％の比率となるように形成されていることを特徴とする。 The present invention is a container for an electromagnetic cooker made of an aluminum foil having a bottom plate portion and a peripheral wall portion rising from the periphery thereof, and an embossed portion in which the outer bottom surface of the bottom plate portion is recessed inwardly. The embossed portion is composed of a line or a combination of a plurality of lines, and is formed in a radial direction with respect to the center of the bottom plate portion, and a direction along the peripheral edge of the bottom plate portion. And a flat area occupied by a flat surface portion of the bottom plate portion excluding these embossed portions that is in contact with the electromagnetic cooker is a ratio of 20 to 95% of the entire flat area of the bottom plate portion. It is formed so that it may become.

この電磁調理器用アルミニウム箔容器においては、底板部に形成したエンボス部により、電磁調理中の渦電流に対する電気抵抗が大きくなり、特に、放射エンボス部は電気抵抗の増大効果が大きく、発生するジュール熱を大きくすることができる。また、これらエンボス部が底板部の外底面を窪ませる凹状に形成され、そのエンボス部を除く平面部が、底板部全体の平面積の２０〜９５％の面積比率で形成されているので、その比較的広い面積の平面部によって電磁調理器への密着性を高めるとともに、ビビり振動の発生も防止し、発熱効率をより高くすることができる。   In the aluminum foil container for an electromagnetic cooker, the embossed portion formed on the bottom plate portion increases the electric resistance against eddy current during electromagnetic cooking, and in particular, the radiation embossed portion has a large effect of increasing the electric resistance, and generates Joule heat. Can be increased. In addition, these embossed parts are formed in a concave shape that dents the outer bottom surface of the bottom plate part, and the flat part excluding the embossed part is formed with an area ratio of 20 to 95% of the entire flat area of the bottom plate part. The flat portion having a relatively large area can improve the adhesion to the electromagnetic cooking device, prevent the occurrence of chatter vibration, and increase the heat generation efficiency.

本発明の電磁調理器用アルミニウム箔容器において、前記アルミニウム箔は、質量％で、Ｓｉが０．１４％以下、Ｆｅが０．４％以下、Ｃｕが０．００６〜０．１％、Ｍｇが２〜５％、Ｃｒが０．１〜０．４％含有し、残部がＡｌ及び不可避不純物からなる組成であるとよい。
このような組成のアルミニウム箔を用いることにより、耐食性、容器としての剛性、成形性が向上するとともに、電気抵抗も大きく、電磁調理器用容器として発熱性の高い容器とすることができる。 In the aluminum foil container for an electromagnetic cooker according to the present invention, the aluminum foil is in mass%, Si is 0.14% or less, Fe is 0.4% or less, Cu is 0.006 to 0.1%, and Mg is 2%. It is good to have a composition containing -5%, Cr 0.1-0.4%, and the balance consisting of Al and inevitable impurities.
By using the aluminum foil having such a composition, the corrosion resistance, the rigidity as a container, and the moldability are improved, and the electrical resistance is large, so that a container having high heat generation can be obtained as a container for an electromagnetic cooker.

本発明の電磁調理器用アルミニウム箔容器によれば、電磁調理中の渦電流に対する電気抵抗が大きく、発生するジュール熱を大きくすることができ、また、電磁調理器への密着性も高いので、発熱効率を向上させることができる。   According to the aluminum foil container for an electromagnetic cooker of the present invention, the electric resistance against eddy current during electromagnetic cooking is large, the generated Joule heat can be increased, and the adhesiveness to the electromagnetic cooker is also high. Efficiency can be improved.

本発明の第１実施形態の電磁調理器用アルミニウム箔容器を示す平面図である。It is a top view which shows the aluminum foil container for electromagnetic cookers of 1st Embodiment of this invention. 図１の電磁調理器用アルミニウム箔容器のＡ−Ａ矢視部分の半分を端面図とした側面図である。It is the side view which made the half of the AA arrow part of the aluminum foil container for electromagnetic cookers of FIG. 1 the end view. 図２の要部の拡大図である。It is an enlarged view of the principal part of FIG. 図１の容器の底面における渦電流とエンボス部との関係を示すモデル図である。It is a model figure which shows the relationship between the eddy current and the embossing part in the bottom face of the container of FIG. 本発明の第２実施形態の電磁調理器用アルミニウム箔容器を示す平面図である。It is a top view which shows the aluminum foil container for electromagnetic cookers of 2nd Embodiment of this invention. 図５の電磁調理器用アルミニウム箔容器のＢ−Ｂ矢視部分の半分を端面図とした側面図である。It is the side view which used the half of the BB arrow part of the aluminum foil container for electromagnetic cookers of FIG. 5 as the end view.

以下、本発明に係る電磁調理器用アルミニウム箔容器の実施形態を図面を参照しながら説明する。
図１〜図４は、本発明の第１実施形態を示している。この実施形態の電磁調理器用アルミニウム箔容器１は、底板部２と、その周縁から立ち上がる周壁部３と、周壁部３の上端から水平に延びるフランジ部４とを備えた上方を開放状態とした容器である。図１及び図２に示す例では、底板部２が円形に形成され、周壁部３は、全体としては円形の底板部２の周縁から立ち上がる円筒形状に形成されるが、若干外側に膨らんだ状態で上方に向けて漸次内径を大きくするように延びており、上下方向に沿う多数の縦リブ５が全周にわたって形成されている。フランジ部４は、周壁部３の上端から水平に広がっており、その外周部には、その端縁を丸めてなるカール部６が全周に形成されている。また、周壁部３とフランジ部４との間には、補強のため、断面が１／４円弧状で外方に突出する環状リブ７が形成されている。 Hereinafter, embodiments of an aluminum foil container for an electromagnetic cooker according to the present invention will be described with reference to the drawings.
1 to 4 show a first embodiment of the present invention. The aluminum foil container 1 for an electromagnetic cooker according to this embodiment includes a bottom plate part 2, a peripheral wall part 3 that rises from the periphery thereof, and a flange part 4 that extends horizontally from the upper end of the peripheral wall part 3 and has an open top. It is. In the example shown in FIGS. 1 and 2, the bottom plate portion 2 is formed in a circular shape, and the peripheral wall portion 3 is formed in a cylindrical shape rising from the periphery of the circular bottom plate portion 2 as a whole, but is slightly swollen outward. In this way, the inner diameter gradually increases in the upward direction, and a large number of vertical ribs 5 along the vertical direction are formed over the entire circumference. The flange portion 4 extends horizontally from the upper end of the peripheral wall portion 3, and a curled portion 6 formed by rounding the edge is formed on the entire outer periphery thereof. Further, an annular rib 7 is formed between the peripheral wall portion 3 and the flange portion 4 for the purpose of reinforcement.

そして、底板部２には、その中心部を除き半径のほぼ半分より外側の領域に、エンボス部１１が形成されている。このエンボス部１１は、図３に示すように、底板部２の外底面を容器１の内側に向けて凹状に窪ませることにより形成されている。また、いずれも線条に形成されるか、複数の線条の組み合わせによって形成されており、その線条の方向が、底板部２の中心に対して放射状に沿う放射エンボス部１２と、周方向に沿う周エンボス部１３とから構成されている。
図示例では、放射エンボス部１２は周方向に等間隔で８個設けられており、それぞれの両端には、周エンボス部１３が連続して形成されている。また、この放射エンボス部１２の間には、外周部付近と、これより半径方向内側に寄った位置に、１本ずつの周エンボス部１３が、放射エンボス部１２とは単独で配置されている。 The bottom plate 2 is formed with an embossed portion 11 in a region outside the substantially half of the radius excluding the central portion. As shown in FIG. 3, the embossed portion 11 is formed by denting the outer bottom surface of the bottom plate portion 2 toward the inside of the container 1. Moreover, all are formed in the filament or it is formed by the combination of a plurality of filaments, the direction of the filament is the radial embossed part 12 along the radial direction with respect to the center of the bottom plate part 2, and the circumferential direction. And a circumferential embossed portion 13 along the surface.
In the illustrated example, eight radial embossed portions 12 are provided at equal intervals in the circumferential direction, and circumferential embossed portions 13 are formed continuously at both ends. Further, between the radiation embossed portions 12, one circumferential embossed portion 13 is disposed independently from the radiation embossed portion 12 in the vicinity of the outer peripheral portion and at a position closer to the inside in the radial direction. .

そして、このエンボス部１１が形成された底板部２において、エンボス部１１を除く平面部１４によって占められる平面積が、底板部２の全体の平面積の２０〜９５％の比率となるように形成されている。逆に言えば、底板部２には、その全体の平面積の５％を超え８０％未満の比率でエンボス部１１が形成されていることになる。   And in the baseplate part 2 in which this embossed part 11 was formed, it forms so that the plane area occupied by the plane part 14 except the embossed part 11 may become a ratio of 20 to 95% of the whole plane area of the baseplate part 2. Has been. In other words, the embossed portion 11 is formed on the bottom plate portion 2 at a ratio of more than 5% and less than 80% of the entire plane area.

また、この容器１に使用されているアルミニウム箔は、質量％で、Ｓｉが０．１４％以下、Ｆｅが０．４％以下、Ｃｕが０．００６〜０．１％、Ｍｇが２〜５％、Ｃｒが０．１〜０．４％含有し、残部がＡｌ及び不可避不純物からなる組成とされている。不可避不純物中には、Ｍｎ，Ｚｎ，Ｔｉが０．２質量％以下の範囲で含まれていてもよい。
なお、この実施形態では底板部２の中央部に取り扱い上の注意を示す文字がエンボス部１１と同様のエンボス加工（容器の内側に窪む凹状となるエンボス加工）によって形成されている。前述のエンボス部を除く平面部１４の平面積の割合は、このような文字をエンボス加工する場合は、その文字によるエンボス部も除くものとする。 Moreover, the aluminum foil used for this container 1 is the mass%, Si is 0.14% or less, Fe is 0.4% or less, Cu is 0.006-0.1%, Mg is 2-5. %, Cr is contained in an amount of 0.1 to 0.4%, and the balance is composed of Al and inevitable impurities. Inevitable impurities may contain Mn, Zn, Ti in a range of 0.2 mass% or less.
In this embodiment, a character indicating a handling precaution is formed at the center of the bottom plate portion 2 by the same embossing as the embossed portion 11 (embossed in a concave shape recessed inside the container). The ratio of the flat area of the flat surface portion 14 excluding the embossed portion described above excludes the embossed portion of the character when embossing such character.

このように構成したアルミニウム箔容器１を電磁調理器において誘導加熱すると、底板部２に渦電流が流れ、その渦電流に対する底板部２の電気抵抗によってジュール熱が発生し、その熱によって容器１内部に収容した食品を加熱することができる。
この場合、底板部２には、エンボス部が形成されて、底板部２が図３に示すように屈曲していることにより、その表面を流れる渦電流の電流路長さが長くなり、その分、渦電流に対する電気抵抗が大きくなって、発生するジュール熱も大きくなるのである。エンボス部１１のうち、放射状エンボス部１２及び周エンボス部１３のいずれもが、電流路長さを長くする効果があるが、特に、放射状エンボス部１２は、図４にモデル化して示したように底板部２の周方向に沿う渦電流の電流路（二点鎖線の矢印で示す）を遮断するようにかつ複数配置されているので、周方向に沿って生じる渦電流に対する電気抵抗がより大きく効果的である。 When the aluminum foil container 1 configured in this manner is induction-heated in an electromagnetic cooker, an eddy current flows through the bottom plate portion 2, Joule heat is generated by the electrical resistance of the bottom plate portion 2 with respect to the eddy current, and the heat causes the inside of the container 1 to be inside. The food contained in can be heated.
In this case, the bottom plate portion 2 is formed with an embossed portion, and the bottom plate portion 2 is bent as shown in FIG. 3, so that the current path length of the eddy current flowing on the surface becomes long. The electric resistance against eddy current increases and the generated Joule heat also increases. Of the embossed portions 11, both the radial embossed portion 12 and the circumferential embossed portion 13 have an effect of increasing the current path length. In particular, the radial embossed portion 12 is modeled and shown in FIG. Since a plurality of eddy current paths (indicated by two-dot chain arrows) along the circumferential direction of the bottom plate portion 2 are cut off and arranged, the electric resistance against the eddy current generated along the circumferential direction is more effective. Is.

また、底板部２のエンボス部１１を容器１の内側に窪ませた形状とし、そのエンボス部１１を除く平面部１４の平面積を底板部２の全面積の２０〜９５％としたことにより、広い面積の平面部１４が確保されており、電磁調理器の上に底板部２を密接させることができ、効率的に誘導加熱することができる。逆に、底板部２のエンボス部１１が容器１の外側に突出している場合は、電磁調理中にビビり振動が生じ易いが、本実施形態の容器１の場合は内側に窪んでいるので、ビビり振動も生じにくい。
以上述べた種々の作用により、この容器１は、電磁調理器用として、アルミニウム箔を用いていながら発熱効率の高いものとなる。
なお、底板部２に放射エンボス部１２及び周エンボス部１３を形成したことにより、容器１としての剛性も高くなり、取り扱い性も良好である。もちろん、この容器１は、電磁調理器用としてだけでなく、通常の直火による調理用としても使用可能である。 Moreover, by making the embossed part 11 of the baseplate part 2 into the shape dented inside the container 1, and making the plane area of the flat part 14 except the embossed part 11 into 20 to 95% of the total area of the baseplate part 2, A flat area 14 having a large area is secured, the bottom plate 2 can be brought into close contact with the electromagnetic cooker, and induction heating can be efficiently performed. On the contrary, when the embossed part 11 of the bottom plate part 2 protrudes to the outside of the container 1, chatter vibration is likely to occur during electromagnetic cooking, but in the case of the container 1 of this embodiment, it is recessed inside, so Vibration is less likely to occur.
Due to the various actions described above, the container 1 has high heat generation efficiency while using an aluminum foil for an electromagnetic cooker.
In addition, since the radiation | emission embossing part 12 and the circumferential embossing part 13 were formed in the baseplate part 2, the rigidity as the container 1 becomes high and the handleability is also favorable. Of course, this container 1 can be used not only for an electromagnetic cooker but also for cooking by ordinary direct fire.

また、この容器１のアルミニウム箔として前述の組成としたが、その理由は以下の通りである。Ｓｉは質量％で０．１４％を超えると耐食性が低下するおそれがあるため、０．１４％以下が好ましい。Ｆｅも、０．４％を超えると耐食性が低下するおそれがあるため、０．４％以下が好ましい。このＦｅは、より好ましくは０．２１〜０．４％が良く、０．２１％未満であると、容器としての剛性が低下するおそれがある。Ｃｕは、０．００６％未満だと剛性が低下し、０．１％を超えると耐食性が低下するおそれがあるので、０．００６〜０．１％が好ましい。Ｍｇは、２％未満だと剛性が低下し、５％を超えると容器として絞り加工等するときの成形性が低下するため、２〜５％が好ましい。Ｃｒは、０．１％未満だと渦電流に対する電気抵抗が小さく、０．４％を超えると成形性が低下するので、０．１〜０．４％が好ましい。   Moreover, although it was set as the above-mentioned composition as the aluminum foil of this container 1, the reason is as follows. If Si exceeds 0.14% by mass, the corrosion resistance may decrease, so 0.14% or less is preferable. Fe is also preferably 0.4% or less because if it exceeds 0.4%, the corrosion resistance may decrease. The Fe content is more preferably 0.21 to 0.4%, and if it is less than 0.21%, the rigidity of the container may be lowered. If Cu is less than 0.006%, the rigidity is lowered, and if it exceeds 0.1%, the corrosion resistance may be lowered, so 0.006 to 0.1% is preferable. If Mg is less than 2%, the rigidity is lowered, and if it exceeds 5%, the moldability when drawing as a container is lowered, so 2 to 5% is preferable. If Cr is less than 0.1%, the electric resistance against eddy current is small, and if it exceeds 0.4%, the formability is lowered.

図５及び図６は本発明の第２実施形態を示している。これらの図において、第１実施形態と共通部分を同一符号で示している。この実施形態のアルミニウム箔容器２１は、角皿状に形成されており、底板部２が平面視で若干の丸みを帯びているがほぼ正方形に形成され、周壁部３が底板部２の周縁から漸次内寸を広げながら立ち上がる角筒状に形成されている。周壁部３が多数の縦リブ５を有すること、周壁部３の上端に環状リブ７を介してフランジ部４が連続して形成され、その外周端部にカール部６が形成されていること等、第１実施形態と同様であるので、同一符号を付している。また、底板部２のエンボス部１１も底板部２を容器２１の内側に窪ませる凹状に形成され、放射エンボス部１２と周エンボス部１３とが形成されている。この場合も、エンボス部１１を除く平面部１４の平面積は底板部２の全体の平面積の２０〜９５％の比率とされる。   5 and 6 show a second embodiment of the present invention. In these drawings, the same parts as those in the first embodiment are denoted by the same reference numerals. The aluminum foil container 21 of this embodiment is formed in a square dish shape, the bottom plate portion 2 is slightly rounded in plan view, but is formed in a substantially square shape, and the peripheral wall portion 3 is formed from the periphery of the bottom plate portion 2. It is formed in the shape of a rectangular tube that rises while gradually expanding its internal dimensions. The peripheral wall portion 3 has a large number of vertical ribs 5, the flange portion 4 is continuously formed at the upper end of the peripheral wall portion 3 via the annular rib 7, and the curled portion 6 is formed at the outer peripheral end thereof. Since it is the same as that of 1st Embodiment, the same code | symbol is attached | subjected. The embossed portion 11 of the bottom plate portion 2 is also formed in a concave shape that allows the bottom plate portion 2 to be recessed inside the container 21, and a radiation embossed portion 12 and a circumferential embossed portion 13 are formed. Also in this case, the flat area of the flat part 14 excluding the embossed part 11 is set to a ratio of 20 to 95% of the entire flat area of the bottom plate part 2.

この実施形態のアルミニウム箔容器２１も、底板部２のエンボス部（放射エンボス部１２及び周エンボス部１３）が形成されていることから、渦電流に対する電気抵抗が大きく、発生するジュール熱が大きい。また、底板部２の平面部１４の面積も大きく、電離調理器への密接状態も良好である。したがって、電磁調理器用のアルミニウム箔容器として、発熱効率が向上する。また、容器としての剛性も高い。   In the aluminum foil container 21 of this embodiment, since the embossed portions (radiation embossed portion 12 and circumferential embossed portion 13) of the bottom plate portion 2 are formed, the electric resistance against eddy current is large and the generated Joule heat is large. Moreover, the area of the plane part 14 of the baseplate part 2 is also large, and the close_contact | adherence state to an ionization cooker is also favorable. Therefore, the heat generation efficiency is improved as an aluminum foil container for an electromagnetic cooker. Moreover, the rigidity as a container is also high.

次に、実施例として、質量％で、Ｓｉが０．１％、Ｃｕが０．０２％、Ｍｇが２．５％、Ｃｒが０．２％、Ｍｎが０．０５％、Ｚｎが０．０２％、Ｔｉが０．０１％含有するアルミニウム合金によって容器を成形した。
そして、その容器内に５００ｍｌの水を入れ、市販されている電磁調理器（株式会社日立製作所製ＩＨクッキングヒーターＨＴ−Ｂ６Ｓ）を用い、３．０ｋｗの電力で電磁誘導加熱を行った。容器内の水温が２７℃から９０℃まで上昇する間の所要時間を測定した。 Next, as an example, in terms of mass%, Si is 0.1%, Cu is 0.02%, Mg is 2.5%, Cr is 0.2%, Mn is 0.05%, and Zn is 0.00. The container was formed from an aluminum alloy containing 02% and 0.01% Ti.
And 500 ml of water was put into the container, and electromagnetic induction heating was performed with a power of 3.0 kW using a commercially available electromagnetic cooker (IH cooking heater HT-B6S manufactured by Hitachi, Ltd.). The time required for the water temperature in the container to rise from 27 ° C. to 90 ° C. was measured.

また、容器内に５００ｍｌの水を入れた状態で、容器の周壁部のみを上端部及び下端部で支持するように片手で１分間持ち上げた後、台の上に降ろして容器を離したときの容器の座屈の有無も確認した。   In addition, when 500 ml of water is placed in the container, the container is lifted for 1 minute with one hand so that only the peripheral wall of the container is supported by the upper end and the lower end, and then lowered onto the table to release the container. The presence or absence of buckling of the container was also confirmed.

容器としては、図１及び図２に示す形状のもの（放射エンボス部及び周エンボス部の両方を有するもの：試料１）、図１に示すエンボス部１１の形成領域に放射方向に沿う放射エンボス部のみを１６本周方向に等間隔に形成したもの（試料２）、同領域に周方向に断続的に配置される周エンボス部のみを同心状に３周分形成したもの（試料３）の三種類とした。いずれもエンボス部と平面部の面積比率は５０％とした。また、周壁部及びフランジ部の形状についてはいずれも図１及び図２に示す形状と同じにした。
これらの結果を表１に示す。 As a container, a container having the shape shown in FIGS. 1 and 2 (having both a radiation embossed part and a circumferential embossed part: sample 1), and a radiation embossed part along the radial direction in the formation region of the embossed part 11 shown in FIG. Three of which are formed at regular intervals in the circumferential direction (sample 2), and only three circumferential embossed portions intermittently arranged in the circumferential direction in the same region are formed concentrically for three rounds (sample 3). Kind. In both cases, the area ratio between the embossed portion and the flat portion was 50%. Moreover, about the shape of a surrounding wall part and a flange part, all were made the same as the shape shown in FIG.1 and FIG.2.
These results are shown in Table 1.

Figure 0005554049
Figure 0005554049

この表１の結果から明らかなように、本発明に係る試料１のアルミニウム箔容器は、電磁調理器により速やかに加熱することができ、強度的にも優れていることが確認された。
なお、本発明は上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。 As is clear from the results in Table 1, it was confirmed that the aluminum foil container of Sample 1 according to the present invention can be quickly heated by an electromagnetic cooker and is excellent in strength.
In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.

１ 容器
２ 底板部
３ 周壁部
４ フランジ部
５ 縦リブ
６ カール部
７ 環状リブ
１１ エンボス部
１２ 放射エンボス部
１３ 周エンボス部
１４ 平面部
２１ 容器 DESCRIPTION OF SYMBOLS 1 Container 2 Bottom plate part 3 Circumferential wall part 4 Flange part 5 Vertical rib 6 Curled part 7 Annular rib 11 Embossed part 12 Radiation embossed part 13 Circumferential embossed part 14 Plane part 21 Container

Claims (2)

底板部とその周縁から立ち上がる周壁部とを備えるアルミニウム箔からなる電磁調理器用の容器であって、
前記底板部に、その外底面を内側に向けて凹状に窪ませてなるエンボス部が形成されるとともに、該エンボス部は、線条又は複数の線条の組み合わせからなり、前記底板部の中心に対して放射状に形成される放射エンボス部と、前記底板部の周縁部に沿う方向に形成される周エンボス部とを備え、これらエンボス部を除く前記底板部の前記電磁調理器と接する平面部によって占められる平面積が、前記底板部全体の平面積の２０〜９５％の比率となるように形成されていることを特徴とする電磁調理器用アルミニウム箔容器。 A container for an electromagnetic cooker made of an aluminum foil having a bottom plate portion and a peripheral wall portion rising from the periphery thereof,
The bottom plate portion is formed with an embossed portion having a concave shape with the outer bottom surface facing inward, and the embossed portion is composed of a line or a combination of a plurality of lines, and is formed at the center of the bottom plate portion. A radial embossed portion formed radially with respect to a peripheral embossed portion formed in a direction along a peripheral edge portion of the bottom plate portion, and a flat surface portion in contact with the electromagnetic cooker of the bottom plate portion excluding these embossed portions An aluminum foil container for an electromagnetic cooker, characterized in that the occupied flat area is 20 to 95% of the entire flat area of the bottom plate. 前記アルミニウム箔は、質量％で、Ｓｉが０．１４％以下、Ｆｅが０．４％以下、Ｃｕが０．００６〜０．１％、Ｍｇが２〜５％、Ｃｒが０．１〜０．４％含有し、残部がＡｌ及び不可避不純物からなる組成であることを特徴とする請求項１記載の電磁調理器用アルミニウム箔容器。   The aluminum foil is, by mass%, Si 0.14% or less, Fe 0.4% or less, Cu 0.006 to 0.1%, Mg 2 to 5%, Cr 0.1 to 0. The aluminum foil container for an electromagnetic cooker according to claim 1, wherein the aluminum foil container is composed of .4% and the balance is made of Al and inevitable impurities.
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