JPH10229938A - Rice cooker pot for heating by electromagnetic induction - Google Patents
Rice cooker pot for heating by electromagnetic inductionInfo
- Publication number
- JPH10229938A JPH10229938A JP3458497A JP3458497A JPH10229938A JP H10229938 A JPH10229938 A JP H10229938A JP 3458497 A JP3458497 A JP 3458497A JP 3458497 A JP3458497 A JP 3458497A JP H10229938 A JPH10229938 A JP H10229938A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- pot
- copper
- aluminum
- rice cooker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は一般家庭及び業務用
に使用される電磁誘導加熱式炊飯器に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic induction heating type rice cooker used for ordinary households and businesses.
【０００２】[0002]
【従来の技術】近年、清潔志向の高まりとともに炊飯器
においても、しゃもじや函体を構成する合成樹脂材料に
抗菌剤を添加し、抗菌作用を発現させる技術が見られ
る。2. Description of the Related Art In recent years, there has been seen a technique of adding an antibacterial agent to a synthetic resin material constituting rice scoops and boxes to exert an antibacterial action in rice cookers as well as a tendency toward cleanliness.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、これま
で炊飯器を構成する金属部品については、抗菌剤を添加
した塗料を塗装する手段はあったものの、金属材料自体
に抗菌性をもたせた事例はない。電磁誘導加熱式炊飯器
の構成部品である鍋はアルミニウムとステンレスから成
るクラッド材をプレス成形して得る方法の他、溶湯鍛造
法によりアルミニウムとステンレスを接合し、鍋に成形
する方法、あるいは、予めフッ素樹脂コート処理を施し
たアルミニウムをステンレスと接合して得られるクラッ
ド材を鍋にプレス成形する方法などがあるが、いずれに
せよ、炊飯器本体に具備される電磁誘導加熱コイルから
発せられる磁力線の作用により、鍋外面を構成するステ
ンレスが発熱する仕組みになっている。鍋は炊飯器の作
動時、１００℃以上になる場合もあり、一般にはこの熱
によって、付着していた菌は死滅すると考えられてい
た。However, although there has been a means of applying a paint containing an antibacterial agent to a metal part of a rice cooker, there has been no case in which the metal material itself has antibacterial properties. . The pot, which is a component of the electromagnetic induction heating rice cooker, can be obtained by press-forming a clad material made of aluminum and stainless steel, or by joining aluminum and stainless steel by molten metal forging and forming it into a pot, or in advance. There is a method of press-molding a clad material obtained by bonding aluminum subjected to a fluororesin coating to stainless steel to a pan, but in any case, the magnetic field lines generated from the electromagnetic induction heating coil provided in the rice cooker body are The mechanism is such that the stainless steel constituting the outer surface of the pot generates heat by the action. The pot may be heated to 100 ° C. or more when the rice cooker is operated, and it is generally considered that the heat kills the attached bacteria.
【０００４】しかし、細菌類のなかには比較的高温に耐
え得るものが存在することもあり、また、炊飯器におい
ては、炊飯動作終了後保温動作に移行した場合、鍋の温
度は７０℃前後となり、電源スイッチを切った場合にお
いてはさらに低温になるため、けっして細菌が生存でき
ない環境ではなくなる。さらには、炊飯動作終了後、炊
飯器の蓋を開ければ空気中に浮遊していた細菌が炊飯器
内に侵入し、鍋の表面に付着して増殖することが可能と
なる。このような細菌の中にはご飯の劣化を促進し、腐
敗臭を発するものも存在するため、炊飯器へ侵入した細
菌の増殖を極力防ぐことが望まれる。[0004] However, some bacteria can withstand relatively high temperatures, and in a rice cooker, when the operation shifts to a warming operation after the rice cooking operation, the temperature of the pan becomes about 70 ° C. When the power switch is turned off, the temperature becomes even lower, so that there is no environment where bacteria cannot survive. Further, if the lid of the rice cooker is opened after the rice cooking operation, the bacteria floating in the air can enter the rice cooker, adhere to the surface of the pot, and multiply. Some of these bacteria promote the deterioration of rice and emit a putrefactive odor, so it is desirable to minimize the growth of bacteria that have entered the rice cooker.
【０００５】本発明は上記事情に鑑みてなされたもの
で、鍋の素材である金属材料そのものに抗菌作用を発現
させ、衛生的な炊飯器を提供することが本発明の第１の
目的である。The present invention has been made in view of the above circumstances, and it is a first object of the present invention to provide a sanitary rice cooker by exhibiting an antibacterial action to the metal material itself, which is the material of the pot. .
【０００６】さらには、合金アルミニウムとステンレス
の接合性を高め、鍋の成形性と耐久性を向上することを
第２の目的とする。It is a second object of the present invention to improve the bondability between aluminum alloy and stainless steel and to improve the moldability and durability of the pot.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、炊飯器を構成する部品であり、アルミニ
ウムとステンレスより構成される鍋の材料として、１．
３〜４．０重量％の銅を含有したステンレスを用いるこ
とにより抗菌作用を発現させたものである。銅には抗菌
作用があることは公知の事実であるが、銅を１．３〜
４．０重量％含有するステンレスにおいても十分な抗菌
作用がある。これはステンレス表面に存在する銅がわず
かずつ溶出してくるために生じる作用であり、本発明は
この作用を利用したものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention relates to a component of a rice cooker, which is used as a material for a pan made of aluminum and stainless steel.
The antibacterial effect is exhibited by using stainless steel containing 3 to 4.0% by weight of copper. It is a known fact that copper has an antibacterial effect.
Even stainless steel containing 4.0% by weight has a sufficient antibacterial effect. This is an effect that occurs because the copper present on the stainless steel surface is eluted little by little, and the present invention utilizes this effect.
【０００８】また、銅を１．３〜４．０重量％含有する
ステンレスを用いることで合金系アルミニウムとの接合
性が向上する作用により、加工性や耐久性の向上が図ら
れる。Further, by using stainless steel containing 1.3 to 4.0% by weight of copper, the workability and durability are improved by the effect of improving the bondability with alloy aluminum.
【０００９】[0009]
【発明の実施の形態】請求項１記載の発明は、１．３〜
４．０重量％の銅を含有するステンレスとアルミニウム
から構成されるクラッド材を加工して成る２層構造の電
磁誘導加熱用の炊飯器鍋であり、ステンレスに含有され
た銅が抗菌作用を発現し、衛生的な炊飯器を提供でき
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention described in claim 1 is 1.3 to 1.3.
This is a rice cooker pot for electromagnetic induction heating having a two-layer structure made by processing a clad material composed of stainless steel and aluminum containing 4.0% by weight of copper, and the copper contained in the stainless steel exhibits an antibacterial action. And provide a sanitary rice cooker.
【００１０】請求項２記載の発明は、ステンレス／アル
ミニウム／ステンレスの３層構造のクラッド材より成
り、１層目と３層目、あるいはいずれか一方に１．３〜
４．０重量％の銅を含有するステンレスを加工して成る
電磁誘導加熱用の炊飯器鍋であり、ステンレスに含有さ
れた銅が抗菌作用を発現し、衛生的な炊飯器を提供でき
る。なお、２層目のアルミニウムは純アルミニウムと合
金系アルミニウムの複数積層材でもよい。According to a second aspect of the present invention, a clad material having a three-layer structure of stainless steel / aluminum / stainless steel is used.
A cooker pot for electromagnetic induction heating formed by processing stainless steel containing 4.0% by weight of copper. Copper contained in the stainless steel exerts an antibacterial action, and a sanitary rice cooker can be provided. Note that the second layer of aluminum may be a multilayer material of pure aluminum and alloy aluminum.
【００１１】請求項３記載の発明は、アルミニウム／銅
／ステンレスの３層構造のクラッド材より成り、１．３
〜４．０重量％の銅を含有するステンレスを使用した電
磁誘導加熱用の炊飯器鍋であり、ステンレスに含有され
た銅が抗菌作用を発現し、衛生的な炊飯器を提供でき
る。According to a third aspect of the present invention, there is provided a cladding material having a three-layer structure of aluminum / copper / stainless steel.
A rice cooker pot for electromagnetic induction heating using stainless steel containing up to 4.0% by weight of copper, wherein copper contained in the stainless steel exhibits an antibacterial action, and a sanitary rice cooker can be provided.
【００１２】請求項４記載の発明は、合金系アルミニウ
ムとステンレスから成り、１．３〜４．０重量％の銅を
含有するステンレスが底面に配置された、溶湯鍛造法に
より製造される電磁誘導加熱用の炊飯器鍋であり、ステ
ンレスに含有された銅が抗菌作用を発現し、衛生的な炊
飯器を提供でき、さらに、ステンレスと合金系アルミニ
ウムとの接合性が向上した耐久性の高い鍋を提供でき
る。According to a fourth aspect of the present invention, there is provided an electromagnetic induction produced by a molten metal forging method, wherein stainless steel containing 1.3 to 4.0% by weight of copper is formed of an alloy aluminum and stainless steel. A rice cooker pot for heating, copper contained in stainless steel has an antibacterial effect, can provide a sanitary rice cooker, and also has a highly durable pot with improved bonding between stainless steel and alloy aluminum. Can be provided.
【００１３】請求項５記載の発明は、１．３〜４．０重
量％の銅を含有するステンレスと合金系アルミニウムか
ら成るクラッド材を加工して成る２層構造の電磁誘導加
熱用の炊飯器鍋であり、ステンレスに含有された銅が抗
菌作用を発現し、衛生的な炊飯器を提供でき、さらに、
ステンレスと合金系アルミニウムとの接合性が向上した
加工性、耐久性の高い鍋を提供できる。According to a fifth aspect of the present invention, there is provided a rice cooker for electromagnetic induction heating having a two-layer structure formed by processing a clad material made of stainless steel containing 1.3 to 4.0% by weight of copper and alloy aluminum. It is a pot, and copper contained in stainless steel exhibits an antibacterial action, and can provide a sanitary rice cooker.
It is possible to provide a pot with improved workability and durability in which the joinability between stainless steel and alloy aluminum is improved.
【００１４】請求項６記載の発明は、鍋内面に抗菌フッ
素樹脂コート処理を施したことにより、ステンレスに含
有された銅とフッ素樹脂コートに添加された抗菌剤が抗
菌作用を発現し、衛生的な炊飯器を提供できる。According to the sixth aspect of the present invention, an antibacterial fluororesin coating treatment is applied to the inner surface of the pot, so that copper contained in stainless steel and an antibacterial agent added to the fluororesin coat exhibit an antibacterial action, thereby improving hygiene. Can provide a perfect rice cooker.
【００１５】請求項７記載の発明は、冷間圧延後の熱処
理によりステンレスの表面に銅の結晶を析出させ、抗菌
性の効果を一層高めたものである。According to a seventh aspect of the present invention, heat treatment after cold rolling precipitates copper crystals on the surface of stainless steel to further enhance the antibacterial effect.
【００１６】[0016]
（実施例１）以下、本発明を利用した第１の実施例につ
いて図１を用いつつ説明する。図１に示した鍋１は電磁
誘導加熱式炊飯器の鍋であり、鍋は炊飯器本体に具備さ
れる誘導コイルより発せられる磁力線によりステンレス
３部が発熱し、アルミニウム２が鍋全体に均一な熱伝導
を行う仕組みとなっている。鍋１は厚さ１．５ｍｍのア
ルミニウム２と厚さ０．５ｍｍのフェライト系ステンレ
ス３から成るクラッド材をプレス成形して得られるが、
このステンレス３は（表１）のａに示したように、銅が
２．５重量％添加されており、ステンレス表面に析出し
た銅の溶出により鍋外面に付着した細菌に対し抗菌作用
を発現する。Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to FIG. The pot 1 shown in FIG. 1 is a pot of an electromagnetic induction heating type rice cooker. In the pot, three portions of stainless steel generate heat by magnetic lines of force generated from an induction coil provided in the rice cooker main body, and aluminum 2 is uniform in the entire pot. It is designed to conduct heat. The pan 1 is obtained by press-molding a clad material composed of 1.5 mm thick aluminum 2 and 0.5 mm thick ferritic stainless steel 3.
As shown in (a) of (Table 1), this stainless steel 3 contains 2.5% by weight of copper, and exhibits an antibacterial action against bacteria attached to the outer surface of the pot due to elution of copper precipitated on the stainless steel surface. .
【００１７】[0017]
【表１】 [Table 1]
【００１８】ここで用いたクラッド材のアルミニウムは
ＪＩＳ規格Ａ１１００の純アルミニウムであるが、アル
ミニウムにエッチング処理等の表面処理を施す場合、Ａ
３００４等の合金アルミニウムを使用することが望まし
い。しかし、これら合金系アルミニウムとステンレスは
接合性が良好とは言えず、合金系アルミニウムとステン
レスから成るクラッドをプレス成形すると、しばしばそ
の界面から剥離を生じ、成形不良となる。The aluminum of the cladding material used here is pure aluminum according to JIS standard A1100, but when aluminum is subjected to a surface treatment such as an etching treatment, the aluminum is used.
It is desirable to use an alloy aluminum such as 3004. However, it cannot be said that these alloy-based aluminum and stainless steel have good bondability. When a clad made of alloy-based aluminum and stainless steel is press-formed, peeling often occurs at the interface, resulting in poor molding.
【００１９】このため、１．３〜４．０重量％の銅を含
有し、表面への銅析出処理を行ったステンレスを用いれ
ば、合金系アルミニウムとの接合性を向上でき、良好な
エッチング性を得る上に、抗菌性をも持たせることが可
能である。また、予め合金系アルミニウムをエッチング
してフッ素樹脂コートしたものと、１．３〜４．０重量
％の銅を含有するステンレスとを熱拡散法で接合して得
たクラッド材をプレス成形する方法によっても良好な接
合性と抗菌作用を備えた鍋を提供することが可能であ
る。For this reason, if stainless steel containing 1.3 to 4.0% by weight of copper and subjected to copper deposition on the surface is used, the bondability with alloy aluminum can be improved, and good etching properties can be obtained. In addition, it is possible to impart antibacterial properties. Also, a method of press-forming a clad material obtained by bonding a material obtained by etching an alloy-based aluminum in advance and coating a fluorine resin with a stainless steel containing 1.3 to 4.0% by weight of copper by a thermal diffusion method. Thus, it is possible to provide a pot having good bonding properties and antibacterial action.
【００２０】（実施例２）以下、本発明を利用した第２
の実施例を図２を用いて説明する。図２に示した鍋４は
実施例１と同様、電磁誘導加熱式炊飯器の鍋であるが、
ステンレス５／アルミニウム６／ステンレス７の３層構
造のクラッド材より成り、各々のステンレスは厚さ０．
５ｍｍ、アルミニウムは厚さ１．０ｍｍ、また、１層目
のステンレス５はオーステナイト系ステンレスで、鍋の
内面を構成し、３層目のステンレス７は電磁誘導加熱す
るために、フェライト系ステンレスを用いており、鍋の
外面を構成する。(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described.
Will be described with reference to FIG. The pot 4 shown in FIG. 2 is a pot of an electromagnetic induction heating type rice cooker as in the first embodiment,
It is made of a clad material having a three-layer structure of stainless steel 5 / aluminum 6 / stainless steel 7, and each stainless steel has a thickness of 0.1 mm.
5 mm, aluminum is 1.0 mm thick, and the first layer of stainless steel 5 is austenitic stainless steel, constituting the inner surface of the pot, and the third layer of stainless steel 7 is made of ferritic stainless steel for electromagnetic induction heating. And constitute the outer surface of the pot.
【００２１】ここで、１層目のステンレス５は（表１）
のｅに示したように１．３重量％の銅が、３層目のステ
ンレス７は（表１）のｂに示したように２．０重量％の
銅がそれぞれ添加されており、ステンレス表面に析出し
た銅の溶出により抗菌作用を発現するが、１層目のステ
ンレス５にも銅を添加することで、保温時等に鍋内部に
付着した細菌に対しても抗菌作用がある。また、本実施
例では１層目にオーステナイト系ステンレスを用いた
が、特に金属組織系には限定はなく、フェライト系やマ
ルテンサイト系であってもよい。Here, the stainless steel 5 of the first layer is as shown in Table 1.
As shown in (e), 1.3% by weight of copper was added, and in the third layer of stainless steel 7, 2.0% by weight of copper was added as shown in (b) of (Table 1). Although the antimicrobial action is exhibited by the elution of copper deposited on the first layer, the addition of copper to the first layer of stainless steel 5 also has an antibacterial action against bacteria adhering to the inside of the pot during heat insulation. Further, in this embodiment, the austenitic stainless steel is used for the first layer, but there is no particular limitation on the metallographic system, and a ferrite or martensite system may be used.
【００２２】さらに、本実施例では１層目と３層目のス
テンレスに抗菌作用を持たせたが、いずれか一方のみに
１．３〜４．０重量％の銅を添加したステンレスを用い
てもよい。なお、２層目のアルミニウムは純アルミニウ
ムと合金系アルミニウムの複数積層材でもよい。Further, in the present embodiment, the first and third stainless steels are provided with an antibacterial action. However, only one of the stainless steels, in which 1.3 to 4.0% by weight of copper is added, is used. Is also good. Note that the second layer of aluminum may be a multilayer material of pure aluminum and alloy aluminum.
【００２３】（実施例３）以下、本発明を利用した第３
の実施例を図３を用いつつ説明する。図３に示した鍋８
は実施例１と同様、電磁誘導加熱式炊飯器の鍋である
が、アルミニウム９／銅１１／ステンレス１０の３層構
造のクラッド材より成り、鍋内面を構成する１層目のア
ルミニウム９は厚さ１．５ｍｍでＡ３００４の合金系ア
ルミニウムであり、２層目の銅１１は厚さ０．０５ｍ
ｍ、鍋外面を構成する３層目のステンレス１０は厚さ
０．６ｍｍで、電磁誘導加熱するために、フェライト系
ステンレスを用いている。(Embodiment 3) Hereinafter, a third embodiment of the present invention will be described.
Will be described with reference to FIG. Pot 8 shown in FIG.
Is a pot of an electromagnetic induction heating type rice cooker as in Example 1, but is made of a clad material having a three-layer structure of aluminum 9 / copper 11 / stainless steel 10, and the first layer aluminum 9 constituting the inner surface of the pot is thick. 1.5 mm thick, A3004 alloy aluminum, the second layer copper 11 is 0.05 m thick
m, the third-layer stainless steel 10 constituting the outer surface of the pan is 0.6 mm thick, and is made of ferritic stainless steel for electromagnetic induction heating.
【００２４】ここで、３層目のステンレス１０は（表
１）のｃに示したように、４．０重量％の銅が添加され
ており、ステンレス表面に析出した銅の溶出により鍋外
面に付着した細菌に対し抗菌作用を発現する。２層目の
銅１１はより均一な熱伝導を目的としたものであるが、
１層目のアルミニウム９と３層目のステンレス１０をよ
り強固に接合させる目的をも合わせ持つ。本実施例では
１層目にＡ３００４の合金系アルミニウムを用いたが、
特にアルミニウムの種類には限定はない。Here, as shown in Table 1c, 4.0% by weight of copper was added to the third layer of stainless steel 10, and the copper deposited on the surface of stainless steel was eluted and the outer surface of the pot was removed. Expresses antibacterial action against attached bacteria. The second layer of copper 11 is intended for more uniform heat conduction,
It also has the purpose of bonding the first-layer aluminum 9 and the third-layer stainless steel 10 more firmly. In this example, the alloy aluminum of A3004 was used for the first layer,
There is no particular limitation on the type of aluminum.
【００２５】また、予め１層目の合金系アルミニウムを
エッチングしてフッ素樹脂コートしたものを用いて拡散
接合法により、銅及び、ステンレスと接合して得たクラ
ッド材を鍋形状に成形してもよく、銅層はメッキにより
１層目の合金系アルミニウムまたは、３層目のステンレ
スに予め形成しておいてもよい。この場合、銅メッキの
下地処理として、他の金属の薄い層を形成しておいても
よい。Also, the clad material obtained by bonding with copper and stainless steel by a diffusion bonding method using a material obtained by etching the first layer of alloy-based aluminum and coating with a fluorine resin in advance is formed into a pot shape. The copper layer may be formed in advance on the first alloy aluminum or the third stainless steel by plating. In this case, a thin layer of another metal may be formed as a base treatment for copper plating.
【００２６】（実施例４）以下、本発明を利用した第４
の実施例を図４を用いつつ説明する。図４に示した鍋１
２は実施例１と同様、電磁誘導加熱式炊飯器の鍋である
が、溶湯鍛造法により作製されたものである。これは予
め所定の鍋底面形状にプレス成形したステンレス１３を
成形用金型の下型に設置した後、アルミニウムの溶湯を
流し込み上型で加圧する方法で得られるが、この時使用
されるアルミニウム１４はＪＩＳ規格ＡＣ４Ｃ等の鋳物
材が適している。(Embodiment 4) Hereinafter, a fourth embodiment of the present invention will be described.
Will be described with reference to FIG. Pot 1 shown in FIG.
Reference numeral 2 denotes a pot of an electromagnetic induction heating type rice cooker, similar to the first embodiment, which is manufactured by a molten metal forging method. This is obtained by placing a stainless steel 13 previously press-molded into a predetermined pot bottom shape in a lower mold of a molding die and then pouring a molten aluminum into the upper mold and pressing the upper mold. For example, a cast material such as JIS standard AC4C is suitable.
【００２７】また、ここで使用したステンレス１３は厚
さ０．５ｍｍであり、電磁誘導加熱するために、フェラ
イト系ステンレスを用いている上に、（表１）のｄに示
したように、１．５重量％の銅が添加されており、ステ
ンレス表面に析出した銅の溶出により鍋外面に付着した
細菌に対し抗菌作用を発現する。The stainless steel 13 used here has a thickness of 0.5 mm, and is made of ferrite stainless steel for electromagnetic induction heating. In addition, as shown in FIG. It contains 0.5% by weight of copper, and exhibits an antibacterial action against bacteria attached to the outer surface of the pot due to elution of copper deposited on the stainless steel surface.
【００２８】以上の実施例１〜４で説明した鍋には、い
ずれにおいても鍋内面にフッ素樹脂コートを施し、非粘
着性を持たせることが可能であるが、鍋外面は銅を１．
３〜４．０重量％含有したステンレス、内面は抗菌剤を
添加したフッ素樹脂コートを施すことにより鍋全面に抗
菌作用を発現させることが可能となる。このときフッ素
樹脂コートに添加する抗菌剤としては、耐水性、耐熱性
等を考慮すると、無機系のものが望ましく、例えば、ノ
バロン（銀系抗菌剤 東亜合成化学工業（株））を０．
３〜３．０重量％添加することで抗菌作用を発現でき
る。他の抗菌剤としては、アメニトップ（銀系抗菌剤
松下電器産業（株））、抗菌性ゼオミック（銀系抗菌剤
品川燃料（株））等がある。In any of the pots described in the above Examples 1 to 4, it is possible to apply a fluororesin coating to the inner surface of the pot to make it non-adhesive.
Stainless steel containing 3 to 4.0% by weight, the inner surface of which is coated with a fluororesin to which an antibacterial agent is added, can exhibit an antibacterial effect on the entire surface of the pot. At this time, the antibacterial agent to be added to the fluororesin coat is preferably an inorganic antibacterial agent in consideration of water resistance, heat resistance and the like. For example, Novalon (silver antibacterial agent Toa Gosei Chemical Industry Co., Ltd.) may be used.
By adding 3 to 3.0% by weight, an antibacterial action can be exhibited. Other antibacterial agents include Amenitop (silver antibacterial agent)
Matsushita Electric Industrial Co., Ltd.) and antimicrobial zeomics (silver antibacterial agent Shinagawa Fuel Co., Ltd.).
【００２９】実施例で用いたステンレスの一例として
は、（表１）のａに示すような実施例１の鍋のクラッド
材に使用した、銅を２．５重量％含有するステンレス材
料が挙げられる。これはフェライト系ステンレスである
が、冷間圧延後、適当な処理条件で焼鈍を行い、さら
に、８００℃１０時間の熱処理を行い、ステンレス中及
び表面に銅の結晶を析出させている。この熱処理条件の
変更により銅の析出量と結晶の大きさを制御可能であ
り、ステンレスの使用環境によりこの条件を変え、表面
に析出した銅の溶出量を制御できる。As an example of the stainless steel used in the examples, a stainless steel material containing 2.5% by weight of copper and used for the clad material of the pot of the example 1 as shown in a of (Table 1) can be mentioned. . This is a ferritic stainless steel. After cold rolling, annealing is performed under appropriate processing conditions, and further, heat treatment is performed at 800 ° C. for 10 hours to precipitate copper crystals in the stainless steel and on the surface. By changing these heat treatment conditions, the amount of precipitated copper and the size of the crystal can be controlled, and these conditions can be changed depending on the environment in which the stainless steel is used, and the amount of copper eluted on the surface can be controlled.
【００３０】また、表面仕上げの条件によっても溶出量
を制御できる。銅の溶出量としては、細菌に対する即効
性を考慮すると、ステンレス材料表面において０．５ｐ
ｐｍ以上あることが望ましい。銅の含有量としては、
１．３重量％未満では抗菌作用が現れにくく、４．０重
量％を越えると加工性等に悪影響を与えるため、１．３
〜４．０重量％とすることが望ましい。The elution amount can also be controlled by the conditions of the surface finish. Considering the immediate effect on bacteria, the amount of copper eluted is 0.5 p on the surface of the stainless steel material.
pm or more. As the content of copper,
When the content is less than 1.3% by weight, the antibacterial effect is hardly exhibited, and when the content exceeds 4.0% by weight, the workability and the like are adversely affected.
It is desirable to set it to 4.0% by weight.
【００３１】次に本発明の実施例である、銅を１．３〜
４．０重量％含有するフェライト系及びオーステナイト
系ステンレス、５種類についての化学組成と特性を（表
１）に、また、（表１）に示したステンレスの抗菌評価
の試験結果を（表２）に示す。試料は全てＢＡ仕上げで
ある。抗菌評価は供試菌として大腸菌と黄色ブドウ球菌
を用いて、フィルム密着法により行った。また、比較例
として、銅を１．０重量％含むフェライト系ステンレス
及び、銅を１．１重量％含むオーステナイト系ステンレ
スを用いた。（表２）に示すように、１．３〜４．０重
量％の銅を含有するステンレス上の菌は、ほぼ死滅する
ことが確認された。Next, copper, which is an embodiment of the present invention, has a copper content of 1.3 to 1.3.
Table 1 shows the chemical compositions and properties of the five types of ferritic and austenitic stainless steels containing 4.0% by weight, and Table 2 shows the test results of the antibacterial evaluation of the stainless steels shown in Table 1. Shown in All samples are BA finished. Antibacterial evaluation was performed by a film adhesion method using Escherichia coli and Staphylococcus aureus as test bacteria. As comparative examples, a ferritic stainless steel containing 1.0% by weight of copper and an austenitic stainless steel containing 1.1% by weight of copper were used. As shown in (Table 2), it was confirmed that bacteria on stainless steel containing 1.3 to 4.0% by weight of copper almost died.
【００３２】[0032]
【表２】 [Table 2]
【００３３】また、Ａ３００４／ＳＵＳ４３０よりなる
２層クラッド材を比較例として、Ａ３００４／（表１）
のａに示したステンレス（銅を２．５％添加してある以
外はＳＵＳ４３０に相当）よりなる２層クラッド材の接
合界面の剥離強度を比較した場合、（表３）に示すよう
に、約１０％の剥離強度向上が認められ、プレス加工時
の剥離不良を減少し、耐久性を向上させることが判明し
た。A two-layer clad material of A3004 / SUS430 was used as a comparative example, and A3004 / (Table 1)
When the peel strength at the joint interface of a two-layer clad material made of stainless steel (corresponding to SUS430 except that 2.5% of copper was added) shown in a of FIG. A 10% improvement in peel strength was observed, and it was found that poor peeling during press working was reduced and durability was improved.
【００３４】[0034]
【表３】 [Table 3]
【００３５】[0035]
【発明の効果】以上のように、本発明の電磁誘導加熱用
の炊飯器鍋によれば、１．３〜４．０重量％の銅を含有
するステンレスを用いることにより、抗菌作用を発現
し、炊飯器を清潔かつ衛生的に維持する効果があると同
時に、アルミニウムとステンレスの接合性を向上するこ
とで、加工性を向上し、なおかつ耐久性に優れた鍋を提
供できる。As described above, according to the rice cooker pot for electromagnetic induction heating of the present invention, an antibacterial effect is exhibited by using stainless steel containing 1.3 to 4.0% by weight of copper. In addition, it is possible to provide a pot that has the effect of maintaining the rice cooker clean and hygienic, and at the same time, improves the workability and is also durable by improving the bondability between aluminum and stainless steel.
【図１】本発明の第１の実施例を示す電磁誘導加熱用の
炊飯器鍋の概要図FIG. 1 is a schematic view of a rice cooker pot for electromagnetic induction heating showing a first embodiment of the present invention.
【図２】本発明の第２の実施例を示す電磁誘導加熱用の
炊飯器鍋の概要図FIG. 2 is a schematic view of a rice cooker pot for electromagnetic induction heating according to a second embodiment of the present invention.
【図３】本発明の第３の実施例を示す電磁誘導加熱用の
炊飯器鍋の概要図FIG. 3 is a schematic view of a rice cooker pot for electromagnetic induction heating according to a third embodiment of the present invention.
【図４】本発明の第４の実施例を示す電磁誘導加熱用の
炊飯器鍋の概要図FIG. 4 is a schematic view of a rice cooker pot for electromagnetic induction heating according to a fourth embodiment of the present invention.
１，４，８，１２ 鍋 ２，６，９，１４ 純アルミニウムまたは合金系アルミ
ニウム ３，５，７，１０，１３ ステンレス １１ 銅1,4,8,12 Pot 2,6,9,14 Pure aluminum or alloyed aluminum 3,5,7,10,13 Stainless steel 11 Copper
Claims (7)
有し、前記ステンレスは、１．３〜４．０重量％の銅を
含有してなる電磁誘導加熱用の炊飯器鍋。1. A rice cooker pot for electromagnetic induction heating having a two-layer structure of aluminum / stainless steel, wherein said stainless steel contains 1.3 to 4.0% by weight of copper.
の３層構造を有し、１層目と３層目のステンレスは、少
なくともそのいずれか一方に１．３〜４．０重量％の銅
を含有してなる電磁誘導加熱用の炊飯器鍋。2. A three-layer structure of stainless steel / aluminum / stainless steel, wherein the first and third layers of stainless steel contain 1.3 to 4.0% by weight of copper in at least one of them. A rice cooker pot for electromagnetic induction heating.
造を有し、前記ステンレスは、１．３〜４．０重量％の
銅を含有してなる電磁誘導加熱用の炊飯器鍋。3. A rice cooker pan for electromagnetic induction heating, having a three-layer structure of aluminum / copper / stainless steel, wherein said stainless steel contains 1.3 to 4.0% by weight of copper.
構成されてなる請求項１〜３のいずれか１項に記載の電
磁誘導加熱用の炊飯器鍋。4. The rice cooker pot for electromagnetic induction heating according to claim 1, wherein the aluminum is made of alloy aluminum.
り製造されてなる請求項４記載の電磁誘導加熱用の炊飯
器鍋。5. The rice cooker pot for electromagnetic induction heating according to claim 4, wherein the alloy aluminum is manufactured by a molten metal forging method.
施されてなる請求項１〜５のいずれか１項に記載の電磁
誘導加熱用の炊飯器鍋。6. The rice cooker pot for electromagnetic induction heating according to any one of claims 1 to 5, wherein an inner surface of the pot is subjected to an antibacterial fluororesin coating treatment.
りその表面に銅の結晶を析出させてなる請求項１〜６の
いずれか１項に記載の電磁誘導加熱用の炊飯器鍋。7. The rice cooker pot for electromagnetic induction heating according to any one of claims 1 to 6, wherein the stainless steel has copper crystals precipitated on the surface thereof by heat treatment after cold rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03458497A JP3171130B2 (en) | 1997-02-19 | 1997-02-19 | Rice cooker pot for electromagnetic induction heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03458497A JP3171130B2 (en) | 1997-02-19 | 1997-02-19 | Rice cooker pot for electromagnetic induction heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10229938A true JPH10229938A (en) | 1998-09-02 |
| JP3171130B2 JP3171130B2 (en) | 2001-05-28 |
Family
ID=12418381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03458497A Expired - Fee Related JP3171130B2 (en) | 1997-02-19 | 1997-02-19 | Rice cooker pot for electromagnetic induction heating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3171130B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010088990A (en) * | 2001-08-31 | 2001-09-29 | 김진영 | Antibiotic Metal Vessel |
| KR20030034485A (en) * | 2001-10-23 | 2003-05-09 | 엘지전자 주식회사 | Induction heating type rice pot |
| JP2007289303A (en) * | 2006-04-24 | 2007-11-08 | Matsushita Electric Ind Co Ltd | Rice cooker |
| JP2008194360A (en) * | 2007-02-15 | 2008-08-28 | Sanyo Electric Co Ltd | Cooking container, method of manufacturing the same, and cooker using the cooking container |
| JP2009067849A (en) * | 2007-09-11 | 2009-04-02 | Sumitomo Electric Ind Ltd | Antimicrobial coated film, cooking vessel having the same and antimicrobial coating agent |
-
1997
- 1997-02-19 JP JP03458497A patent/JP3171130B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010088990A (en) * | 2001-08-31 | 2001-09-29 | 김진영 | Antibiotic Metal Vessel |
| KR20030034485A (en) * | 2001-10-23 | 2003-05-09 | 엘지전자 주식회사 | Induction heating type rice pot |
| JP2007289303A (en) * | 2006-04-24 | 2007-11-08 | Matsushita Electric Ind Co Ltd | Rice cooker |
| JP2008194360A (en) * | 2007-02-15 | 2008-08-28 | Sanyo Electric Co Ltd | Cooking container, method of manufacturing the same, and cooker using the cooking container |
| JP2009067849A (en) * | 2007-09-11 | 2009-04-02 | Sumitomo Electric Ind Ltd | Antimicrobial coated film, cooking vessel having the same and antimicrobial coating agent |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3171130B2 (en) | 2001-05-28 |
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