JP2011156185A - Cooking utensil and heating device with the same - Google Patents
Cooking utensil and heating device with the same Download PDFInfo
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本発明は、加熱装置に用いる調理器具に関し、より具体的には、調理器具に形成された発熱層が照射されたマイクロ波エネルギーを吸収することによって発熱する熱を利用して食品を調理するグリル皿に関するものである。 TECHNICAL FIELD The present invention relates to a cooking utensil used for a heating device, and more specifically, a grill for cooking food using heat generated by absorbing microwave energy irradiated by a heating layer formed on the cooking utensil. It relates to dishes.
近年、電子レンジ等の高周波加熱装置においては、食品に直接マイクロ波を照射することで食品を加熱するマイクロ波加熱機能に加え、マイクロ波加熱装置内に設置する調理器具、いわゆる、グリル皿を用いた調理機能が存在する。以下、これをグリル皿調理機能という。 In recent years, microwave ovens and other high-frequency heating devices use cooking utensils installed in microwave heating devices, so-called grill dishes, in addition to the microwave heating function that heats food by directly irradiating the food with microwaves. There was a cooking function. Hereinafter, this is called a grill pan cooking function.
このグリル皿調理機能とは、マイクロ波エネルギーを吸収して発熱する発熱層が形成された調理皿を加熱室内に設置し、その調理皿の上に食品を載置して、マイクロ波エネルギーの照射により発熱層から発生する熱によりその食品を調理するというものである。 This grill pan cooking function is the installation of a cooking pan with a heating layer that absorbs microwave energy and generates heat, places food on the cooking pan, and irradiates microwave energy. The food is cooked by heat generated from the heat generating layer.
従来、マイクロ波エネルギーで発熱する発熱層を設けたグリル皿は、図３、図４に示されるような構成のものがある（例えば、特許文献１参照）。上記従来の技術について、図面を参照して説明する。 Conventionally, a grill pan provided with a heat generating layer that generates heat by microwave energy is configured as shown in FIGS. 3 and 4 (see, for example, Patent Document 1). The prior art will be described with reference to the drawings.
図３、図４は、それぞれ従来のグリル皿の上面図、側面断面図を示すものである。図３、図４に示されるように、従来のグリル皿１０１は、上方から見ると全体として略長方形の形状を有し、その周囲には鍔状の形状を有する縁部１０２、縁部１０２の内側に周囲溝１０３が設けられる。 3 and 4 show a top view and a side sectional view of a conventional grill pan, respectively. As shown in FIGS. 3 and 4, the conventional grill pan 101 has a substantially rectangular shape as a whole when viewed from above, and an edge 102 having a bowl-like shape around the periphery of the edge 102. A peripheral groove 103 is provided on the inner side.
周囲溝１０３の内側には、角に丸みのある細長く薄い直方体形状の土手部１０４が、複数個並べられ、隣り合う２つの土手部の間には溝部１０５と、土手部１０４の上面には、食品が載置される略平面形状の載置面１０６がそれぞれ設けられる。土手部１０４、溝部１０５、および載置面１０６の裏面には、フェライトを主成分とするマイクロ波吸収材料からなる膜厚がほぼ一定の発熱層（図示せず）が設けられている。 A plurality of long and thin rectangular parallelepiped bank portions 104 with rounded corners are arranged inside the peripheral groove 103, and a groove portion 105 between two adjacent bank portions, and an upper surface of the bank portion 104, A substantially planar placement surface 106 on which food is placed is provided. On the back surface of the bank portion 104, the groove portion 105, and the placement surface 106, a heat generating layer (not shown) made of a microwave absorbing material mainly composed of ferrite and having a substantially constant film thickness is provided.
上記のような構成のグリル皿１０１をマイクロ波加熱装置の加熱室内に設置し（図示せず）、マイクロ波エネルギーをグリル皿１０１の裏面に照射すると、発熱層が発熱し、載置面１０６から伝わる熱で食品を調理することができる。 When the grill pan 101 configured as described above is installed in a heating chamber of a microwave heating apparatus (not shown) and the microwave energy is applied to the back surface of the grill pan 101, the heat generating layer generates heat, and the mounting surface 106 The food can be cooked with the transmitted heat.
しかしながら、前記従来の構成では、グリル皿をマイクロ波加熱装置の加熱室内に設置してマイクロ波エネルギーを照射すると、加熱室内では定在波が生じるため、発熱層の部位によってマイクロ波エネルギーの吸収量が異なり、発熱層の温度が不均一な状態となる。すなわち発熱層に加熱むらが発生する。 However, in the conventional configuration, when a grill pan is installed in the heating chamber of the microwave heating apparatus and irradiated with microwave energy, a standing wave is generated in the heating chamber. However, the temperature of the heat generating layer is not uniform. That is, uneven heating occurs in the heat generating layer.
その結果、食品をグリル皿の載置面に載置してグリル調理を行うと、食品にも加熱むらが生し、よく焼ける部分と焼けない部分や焼き色が付く部分と付かない部分が混在し、良
好な調理性能が得られないという課題を有していた。
As a result, when food is placed on the surface of the grill pan and cooked on the grill, the food also has uneven heating, and a portion that burns well, a portion that does not bake, a portion that does not bake, and a portion that does not stick. However, there was a problem that good cooking performance could not be obtained.
また、発熱層の耐熱性が低い場合、上記加熱むらによって高い温度に昇温する部位の温度を低くする必要があり、そのために調理に必要なマイクロ波エネルギーを発生させる電力を低減しなければならず、調理時間が長くなるなどの課題も有する。 In addition, when the heat generation layer has low heat resistance, it is necessary to lower the temperature of the part that is heated to a high temperature due to the uneven heating, and for that purpose, the electric power that generates microwave energy necessary for cooking must be reduced. In addition, there are problems such as a long cooking time.
本発明は、前記従来の課題を同時に解決するもので、グリル皿に形成した発熱層の加熱温度むらを低減し、マイクロ波加熱装置におけるグリル皿調理の性能向上を図ることを目的とする。 An object of the present invention is to solve the above-mentioned conventional problems at the same time, and to reduce the uneven heating temperature of the heat generation layer formed on the grill pan and to improve the performance of grill pan cooking in the microwave heating apparatus.
上記課題を解決するために、本発明の調理器具は、照射されたマイクロ波エネルギーを吸収して発熱するマイクロ波吸収材料を主成分とする発熱層を有する載置される食品を調理するための調理器具において、少なくとも前記発熱層が第１の発熱部位と、前記第１の発熱部位よりも照射されるマイクロ波エネルギーが大きい第２の発熱部位とから構成され、前記第１の発熱部位のマイクロ波エネルギーの吸収量を前記第２の発熱部位よりも大きくしたものである。 In order to solve the above-described problems, a cooking utensil according to the present invention is for cooking a food to be placed having a heating layer mainly composed of a microwave absorbing material that generates heat by absorbing irradiated microwave energy. In the cooking utensil, at least the heat generating layer is composed of a first heat generating portion and a second heat generating portion with a higher microwave energy irradiated than the first heat generating portion, and the micro of the first heat generating portion. The amount of wave energy absorbed is larger than that of the second heat generating portion.
これによって、加熱室内で生じる定在波によって発熱層に照射されるマイクロ波エネルギーに分布が発生しても、照射されるマイクロ波エネルギーが小さい第１発熱部位はマイクロ波エネルギーの吸収量が大きくなり、マイクロ波エネルギーの大きい第２の発熱部位はマイクロ波エネルギーの吸収量が抑制される。 As a result, even if a distribution occurs in the microwave energy irradiated to the heat generating layer due to the standing wave generated in the heating chamber, the first heat generating portion where the irradiated microwave energy is small increases the absorption amount of the microwave energy. The absorption amount of microwave energy is suppressed in the second heat generating portion with large microwave energy.
そのため、発熱層全体の温度分布が小さい状態で昇温させることができ、グリル皿の載置面の加熱むらを低減することができる。 Therefore, it is possible to raise the temperature while the temperature distribution of the entire heat generating layer is small, and it is possible to reduce uneven heating on the mounting surface of the grill pan.
本発明の調理器具は、食品の加熱むらを少なくすることができ、食品の安定した仕上がり状態が得られるとともに、均一な焼き色を付けることが可能となり、グリル皿調理の性能を向上させることができる。 The cooking utensil of the present invention can reduce the unevenness of heating of the food, obtain a stable finished state of the food, can give a uniform baking color, and can improve the performance of grill dish cooking. it can.
第１の発明は、照射されたマイクロ波エネルギーを吸収して発熱するマイクロ波吸収材料を主成分とする発熱層を有する載置される食品を調理するための調理器具において、少なくとも発熱層が第１の発熱部位と、第１の発熱部位よりも照射されるマイクロ波エネルギーが大きい第２の発熱部位とから構成され、第１の発熱部位のマイクロ波エネルギーの吸収量を第２の発熱部位よりも大きくしたものである。 According to a first aspect of the present invention, there is provided a cooking utensil for cooking a food to be placed having a heat generating layer mainly composed of a microwave absorbing material that absorbs irradiated microwave energy and generates heat. 1 heat generating portion and a second heat generating portion irradiated with microwave energy larger than that of the first heat generating portion, and the amount of microwave energy absorbed by the first heat generating portion is larger than that of the second heat generating portion. Is also a bigger one.
本発明によれば、加熱室内で生じる定在波によって発熱層に照射されるマイクロ波エネルギーに分布が発生しても、照射されるマイクロ波エネルギーが小さい第１発熱部位はマイクロ波エネルギーの吸収量が大きく、マイクロ波エネルギーの大きい第２の発熱部位はマイクロ波エネルギーの吸収量が抑制されるため、発熱層全体の温度分布が小さい状態で昇温させることができるのでグリル皿の載置面の加熱むら低減され、食品の安定した仕上がり状態が得られるとともに、均一な焼き色を付けることが可能となり、グリル皿調理の
性能を向上させることができる。
According to the present invention, even if a distribution is generated in the microwave energy irradiated to the heat generating layer by the standing wave generated in the heating chamber, the first heat generating portion having a small irradiated microwave energy is absorbed by the microwave energy. Since the absorption amount of the microwave energy is suppressed in the second heat generating portion having a large microwave energy, the temperature can be raised with the temperature distribution of the entire heat generating layer being small. The unevenness of heating is reduced, a stable finished state of the food can be obtained, a uniform baking color can be given, and the performance of cooking on the grill plate can be improved.
第２の発明は、特に、第１の発明において、第１の発熱部位の発熱層に含まれるマイクロ波吸収材料の含有量を第２の発熱部位の発熱層に含まれるマイクロ波吸収材料の含有量よりも多くしたものである。 In particular, according to the second invention, in the first invention, the content of the microwave absorbing material contained in the heat generating layer of the first heat generating portion is the content of the microwave absorbing material contained in the heat generating layer of the second heat generating portion. More than the amount.
本発明によれば、第１の発熱部位と第２の発熱部位の発熱層のマイクロ波吸収材料の含有量を変えるだけでそれぞれの発熱部位のマイクロ波エネルギーの吸収量が制御され、発熱層全体の温度むらを低減できるので極めて簡単な手段で発熱層を形成することができ、生産性が優れている。 According to the present invention, the amount of microwave energy absorbed in each heat generating portion can be controlled only by changing the content of the microwave absorbing material in the heat generating layer in the first heat generating portion and the second heat generating portion, and the entire heat generating layer can be controlled. Therefore, the heat generation layer can be formed by a very simple means, and the productivity is excellent.
第３の発明は、特に、第１または第２の発明において、前記第１の発熱部位の発熱層の膜厚を前記第２の発熱部位の発熱層の膜厚よりも厚くしたものである。 In the third invention, in particular, in the first or second invention, the thickness of the heat generating layer in the first heat generating portion is made larger than the film thickness of the heat generating layer in the second heat generating portion.
本発明によれば、発熱層のマイクロ波吸収材料の含有量を変えることなく、発熱層の温度分布を小さくすることができるので、さらに発熱層の形成が容易となり、生産性に優れた発熱層を実現することができる。 According to the present invention, since the temperature distribution of the heat generating layer can be reduced without changing the content of the microwave absorbing material in the heat generating layer, the heat generating layer can be easily formed and the heat generating layer has excellent productivity. Can be realized.
第４の発明は、特に、第１から第３の発明のいずれかにおいて、発熱層を少なくともマイクロ吸収材料とマイクロ波吸収材料を保持するためのバインダーとから構成するものである。 In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the heat generating layer is composed of at least a microabsorbing material and a binder for holding the microwave absorbing material.
本発明によれば、発熱層とグリル皿の接着性を向上させることができ、発熱層の剥離やクラックが防止され、長期にわたり初期の発熱性能を保持することができ、常に安定したグリル皿調理の性能を実現することができる。 According to the present invention, the adhesiveness between the heat generating layer and the grill pan can be improved, peeling and cracking of the heat generating layer can be prevented, and the initial heat generating performance can be maintained over a long period of time. Performance can be achieved.
第５の発明は、特に、第１から第４の発明のいずれかにおいて、マイクロ波吸収材料を２５０℃から３００℃のキュリー温度を有するフェライトとするものである。 In a fifth aspect of the present invention, in particular, in any one of the first to fourth aspects, the microwave absorbing material is a ferrite having a Curie temperature of 250 ° C. to 300 ° C.
本発明によれば、マイクロ波エネルギーの吸収性能を支配する磁気特性を２５０℃から３００℃の温度近傍まで発現させることができるのでグリル皿の到達温度をより高くすることができ、グリル皿調理の性能を向上させることができるとともに、フェライトがキュリー温度近傍になるとマイクロ波エネルギーの吸収を支配する磁気特性が低下し、マイクロ波エネルギーを吸収しなくなるので発熱層やグリル皿の過昇温が防止され、優れた耐久性と安全性を実現することができる。 According to the present invention, the magnetic characteristics governing the absorption performance of microwave energy can be expressed from 250 ° C. to near 300 ° C., so that the temperature reached by the grill pan can be further increased, In addition to improving the performance, the magnetic properties that govern the absorption of microwave energy decrease when ferrite is close to the Curie temperature, and the microwave energy is not absorbed, preventing overheating of the heating layer and grill pan. Can realize excellent durability and safety.
第６の発明は、特に、第１から第５の発明において、マイクロ波吸収材料を保持するバインダーをシリコンゴムとするものである。本発明によれば、発熱層の成型性が向上するとともに、優れた耐熱性と耐化学薬品性を有するため、耐久性、信頼性の高い発熱層を実現することができる。 In the sixth invention, in particular, in the first to fifth inventions, the binder for holding the microwave absorbing material is silicon rubber. According to the present invention, the moldability of the heat generating layer is improved, and since the heat resistance and chemical resistance are excellent, a heat generating layer having high durability and reliability can be realized.
第７の発明は、特に、第１から第６の発明のいずれかの調理器具を加熱室に備えるものである。本発明によれば、加熱装置におけるグリル皿調理の性能を向上させることができる。 According to a seventh aspect of the invention, in particular, the cooking chamber of any one of the first to sixth aspects is provided in a heating chamber. ADVANTAGE OF THE INVENTION According to this invention, the performance of the grill pan cooking in a heating apparatus can be improved.
以下、本発明の実施の形態について、図面を参照しながら説明する。本発明の実施の形態にかかるグリル皿の形状は、従来のグリル皿１０１を用いることができる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. As the shape of the grill pan according to the embodiment of the present invention, a conventional grill pan 101 can be used.
本発明の実施の形態で用いる図は、本発明の発熱層を説明し易くするために従来のグリル皿（図３，図４）で説明したグリル皿を構成する縁部、縁部の内側の周囲溝、土手部、
隣り合う２つの土手部の間の溝部を省略し、さらに食品が載置される載置面を平板とし、この平板の載置面の裏側に形成される発熱層の形態について示している。なお、この実施の形態によって本発明が限定されるものではない。
The drawings used in the embodiment of the present invention are the edges constituting the grill pan described in the conventional grill pan (FIGS. 3 and 4) for easy explanation of the heat generating layer of the present invention, Surrounding groove, bank part,
The groove part between two adjacent bank parts is abbreviate | omitted, Furthermore, the mounting surface in which a foodstuff is mounted is made into a flat plate, and it has shown about the form of the heat generating layer formed in the back side of the mounting surface of this flat plate. Note that the present invention is not limited to the embodiments.
（実施の形態１）
図１は本発明の第１の実施の形態におけるグリル皿の模式図である。より具体的には、図１（ａ）はグリル皿を裏から見た場合の平面図、図１（ｂ）は図１（ａ）のＡ−Ａ’の断面図である。
(Embodiment 1)
FIG. 1 is a schematic view of a grill pan according to the first embodiment of the present invention. More specifically, FIG. 1A is a plan view when the grill pan is viewed from the back, and FIG. 1B is a cross-sectional view taken along line AA ′ of FIG.
図１において、グリル皿１は食品が載置される載置面２と載置面２の裏側に形成された発熱層３で構成されている。さらに発熱層３は、載置面２の周囲領域に位置する第１の発熱部位４と、第１の発熱部位４よりも照射されるマイクロ波エネルギーが大きい載置面２の中央領域に位置する第２の発熱部位５から構成され、この第１の発熱部位４の膜厚は第２の発熱部位５の膜厚よりも厚くしている。 In FIG. 1, the grill pan 1 is composed of a placing surface 2 on which food is placed and a heat generating layer 3 formed on the back side of the placing surface 2. Further, the heat generating layer 3 is positioned in the first heat generating portion 4 located in the peripheral region of the mounting surface 2 and the central region of the mounting surface 2 where the microwave energy irradiated from the first heat generating portion 4 is larger. The second heat generating portion 5 is configured, and the film thickness of the first heat generating portion 4 is larger than the film thickness of the second heat generating portion 5.
上記のような構成のグリル皿１をマイクロ波加熱装置の加熱室内に設置し（図示せず）、マイクロ波エネルギーをグリル皿１の裏面（発熱層３側）に照射すると、発熱層３がマイクロ波エネルギーを吸収して加熱され、載置面２から伝わる熱で食品を調理することができる。 When the grill pan 1 having the above-described configuration is installed in a heating chamber of a microwave heating apparatus (not shown) and the microwave energy is applied to the back surface of the grill pan 1 (on the heat generating layer 3 side), the heat generating layer 3 becomes microscopic. The food can be cooked by heat that is absorbed by the wave energy and transmitted from the mounting surface 2.
加熱室内にマイクロ波エネルギーを照射すると、加熱室内に定在波が生じ、マイクロ波エネルギーが不均一（強い部分と弱い部分）な状態となり、おおよそマイクロ波エネルギーは加熱室の中央近傍が大きく、周囲が小さくなるように分布している。 When microwave energy is irradiated into the heating chamber, a standing wave is generated in the heating chamber, and the microwave energy becomes non-uniform (strong and weak), and the microwave energy is large near the center of the heating chamber, It is distributed so that becomes small.
この加熱室内にマイクロ波エネルギーの吸収が均一である発熱層を形成したグリル皿を配置した場合、発熱層においてもマイクロ波エネルギーが強い部分と弱い部分が生じ、マイクロ波エネルギーが強い部分の発熱層ではマイクロ波エネルギーの吸収量が多く、弱い部分の発熱層では少なくなり、発熱量に大きな差が生じる。 When a grill pan in which a heat generating layer with uniform absorption of microwave energy is arranged in the heating chamber, a portion where the microwave energy is strong and a weak portion are generated in the heat generating layer, and a heat generating layer where the microwave energy is strong Then, the amount of absorption of microwave energy is large, and the heat generation layer in the weak part is small.
その結果、発熱層および載置面は面方向での加熱むらが発生し、食品の仕上がり状態が安定して得られないことや食品に均一な焼き色を付けることができないなどの不具合が起こる。 As a result, the heat generation layer and the mounting surface are unevenly heated in the surface direction, resulting in problems such as that the finished state of the food cannot be stably obtained and that the food cannot be colored uniformly.
本発明の発熱層３において、照射されるマイクロ波エネルギーが小さい第１の発熱部位４は、膜厚を厚くしているのでマイクロ波エネルギーの吸収効率が高くなり、マイクロ波エネルギーが小さくても吸収量を多くすることができる。 In the heat generating layer 3 of the present invention, the first heat generating portion 4 with a small irradiated microwave energy has a thick film thickness, so that the absorption efficiency of the microwave energy is high, and even if the microwave energy is small, it is absorbed. The amount can be increased.
一方、照射されるマイクロ波エネルギーが大きい第２の発熱部位５は、膜厚を第１の発熱部位４より薄くしているのでマイクロ波エネルギーの吸収効率が低くなり、マイクロ波エネルギーの吸収量が抑制される。 On the other hand, since the second heat generating portion 5 having a large microwave energy to be irradiated has a film thickness thinner than that of the first heat generating portion 4, the absorption efficiency of the microwave energy is lowered, and the amount of absorption of the microwave energy is reduced. It is suppressed.
その結果、発熱層３全体の温度分布が小さくなり、グリル皿１の載置面２の加熱むらが低減されるので食品の安定した仕上がり状態が得られ、かつ均一な焼き色を付けることができ、グリル皿調理の性能を向上させることができる。 As a result, the temperature distribution of the entire heating layer 3 is reduced, and uneven heating of the mounting surface 2 of the grill pan 1 is reduced, so that a stable finished state of the food can be obtained and a uniform baking color can be given. , Grill dish cooking performance can be improved.
本発明の発熱層３は、少なくともマイクロ吸収材料とマイクロ波吸収材料を保持するためのバインダーの組成物から構成され、より具体的には、マイクロ吸収材料としてキュリー温度が２５０℃〜３００℃のフェライト、バインダーとしてシリコンゴムが用いられる。 The heat generating layer 3 of the present invention is composed of at least a microabsorbing material and a binder composition for holding the microwave absorbing material, and more specifically, a ferrite having a Curie temperature of 250 ° C. to 300 ° C. as the microabsorbing material. Silicone rubber is used as the binder.
シリコンゴムをバインダーとして用いることにより、発熱層３とグリル皿１の接着性を向上させることができるので発熱層３の剥離やクラックが防止され、長期にわたり初期の発熱性能を保持することができ、常に安定したグリル皿調理の性能を実現することができるとともに、シリコンゴムは優れた耐熱性と耐化学薬品性を有するため、耐久性、信頼性の高い発熱層３を実現することができる。 By using silicon rubber as a binder, the adhesiveness between the heat generating layer 3 and the grill pan 1 can be improved, so the exfoliation and cracking of the heat generating layer 3 can be prevented, and the initial heat generating performance can be maintained over a long period of time. A stable grill pan cooking performance can be achieved at all times, and since silicon rubber has excellent heat resistance and chemical resistance, the heat generating layer 3 having high durability and reliability can be realized.
また、発熱層３は、フェライトとシリコンゴムの組成物をホットプレス加工によってグリル皿１に簡単に形成することができるとともに、発熱層３の第１の発熱部位４と第２の発熱部位５は、膜厚が異なるだけであるので予め複数のフェライトとシリコンゴムの組成物を製造する必要が無く、さらに、発熱層３の第１の発熱部位４と第２の発熱部位５は、所定の膜厚が得られるようにホットプレスの金型を設計することにより、１回のホットプレス加工で発熱層３を形成することが可能となり、生産性を向上させることができる。 The heat generating layer 3 can be easily formed on the grill pan 1 by hot pressing a composition of ferrite and silicon rubber, and the first heat generating portion 4 and the second heat generating portion 5 of the heat generating layer 3 are Further, since only the film thicknesses are different, there is no need to prepare a plurality of ferrite and silicon rubber compositions in advance. Further, the first heat generating portion 4 and the second heat generating portion 5 of the heat generating layer 3 are made of a predetermined film. By designing a hot press mold so as to obtain a thickness, the heat generating layer 3 can be formed by a single hot press process, and productivity can be improved.
さらに、発熱層３は耐熱性が高く、かつ加熱むらを低減できることにより、グリル皿１全体の温度を高くすることができるのでグリル皿調理の調理スピードが向上し、調理時間を短縮することができる。 Furthermore, since the heat generating layer 3 has high heat resistance and can reduce uneven heating, the temperature of the entire grill pan 1 can be increased, so that the cooking speed of grill pan cooking is improved and the cooking time can be shortened. .
本発明の発熱層３に用いられるマイクロ波吸収材料は、２５０℃から３００℃のキュリー温度を有するフェライトが好ましい。このフェライトを用いることによって、マイクロ波エネルギーの吸収性能を支配する磁気特性を２５０℃から３００℃の温度近傍まで発現させることができるのでグリル皿の到達温度をより高くすることができ、グリル皿調理の性能を向上させることができる。 The microwave absorbing material used for the heat generating layer 3 of the present invention is preferably a ferrite having a Curie temperature of 250 ° C. to 300 ° C. By using this ferrite, the magnetic characteristics governing the absorption performance of the microwave energy can be expressed from the temperature of 250 ° C. to the vicinity of 300 ° C., so that the temperature reached by the grill pan can be increased, and the grill pan cooking Performance can be improved.
さらに、フェライトがキュリー温度近傍の温度に加熱されるとマイクロ波エネルギーの吸収を支配する磁気特性が低下し、マイクロ波エネルギーの吸収効率が低下するので発熱層３の発熱の昇温が停止し、グリル皿１の過昇温が防止され、優れた耐久性と安全性を実現することができる。 Furthermore, when the ferrite is heated to a temperature close to the Curie temperature, the magnetic characteristics governing the absorption of the microwave energy are reduced, and the absorption efficiency of the microwave energy is reduced, so that the temperature rise of the heat generation layer 3 is stopped, Overheating of the grill pan 1 is prevented, and excellent durability and safety can be realized.
次に、本発明の効果を具体的に説明する。図１に示す本発明の第１の発熱部位４と第２の発熱部位５を有する発熱層３を形成したグリル皿１を加熱室に配置して８００Ｗのマイクロ波エネルギーを発熱層３に照射し、５分後の発熱層３全体の平均温度と最高温度を評価したところ、平均温度２２０℃、最高温度（発熱層３の中央近傍）２４５℃で温度差が２５ｄｅｇであった。 Next, the effects of the present invention will be specifically described. The grill pan 1 in which the heat generating layer 3 having the first heat generating portion 4 and the second heat generating portion 5 of the present invention shown in FIG. 1 is disposed in the heating chamber, and the heat generating layer 3 is irradiated with 800 W of microwave energy. When the average temperature and the maximum temperature of the entire heat generating layer 3 after 5 minutes were evaluated, the average temperature was 220 ° C., the maximum temperature (near the center of the heat generating layer 3) was 245 ° C., and the temperature difference was 25 deg.
一方、発熱層３と同じ組成で第１の発熱部位と第２の発熱部位を設けず一定の膜厚の発熱層を形成したグリル皿を評価したところ、平均温度２２０℃、最高温度（発熱層の中央近傍）２６５℃で温度差が４５ｄｅｇであり、本発明の発熱層３の方が２０ｄｅｇ低い結果を得た。 On the other hand, when a grill pan having the same composition as the heat generating layer 3 and having a heat generating layer having a constant film thickness without providing the first heat generating portion and the second heat generating portion was evaluated, the average temperature was 220 ° C. and the maximum temperature (heat generating layer The temperature difference was 45 deg at 265 ° C., and the heating layer 3 of the present invention was 20 deg lower.
このことから明らかなように、本発明の発熱層３は第１の発熱部位４と第１の発熱部位４よりも膜厚を薄くした第２の発熱部位５を設けることにより、加熱むらを低減することができる。 As is clear from this, the heating layer 3 of the present invention is provided with the first heating part 4 and the second heating part 5 having a thickness smaller than that of the first heating part 4, thereby reducing uneven heating. can do.
なお、発熱層３の第１の発熱部位４と第２の発熱部位５のそれぞれの膜厚は限定されるものではなく、マイクロ波エネルギーの入力電力、グリル皿の面積、加熱したい温度によって適宜選定されるものであるが、相対的に第１の発熱部位４の膜厚は、第２の発熱部位の１．５〜３倍であることが望ましい。 The film thickness of each of the first heat generating portion 4 and the second heat generating portion 5 of the heat generating layer 3 is not limited, and is appropriately selected depending on the input power of microwave energy, the area of the grill pan, and the temperature to be heated. However, it is desirable that the film thickness of the first heat generating portion 4 is relatively 1.5 to 3 times that of the second heat generating portion.
また、図１では本発明の発熱層３を構成する第１の発熱部位４と第２の発熱部位５の境界を明確に分けているが、膜厚に勾配を設けた構成も適用される。 In FIG. 1, the boundary between the first heat generating portion 4 and the second heat generating portion 5 constituting the heat generating layer 3 of the present invention is clearly divided, but a configuration in which a gradient is provided in the film thickness is also applied.
以上のように、本実施の形態においては、少なくとも発熱層３を第１の発熱部位４と、第１の発熱部位４よりも照射されるマイクロ波エネルギーが大きい第２の発熱部位５とから構成し、第１の発熱部位４の膜厚を第２の発熱部位５よりも厚くすることにより、それぞれの発熱部位におけるマイクロ波エネルギーの吸収量を均等化することができるので発熱層３およびグリル皿１の載置面２の加熱むらが低減され、グリル皿調理の性能を向上させることができる。 As described above, in the present embodiment, at least the heat generating layer 3 includes the first heat generating portion 4 and the second heat generating portion 5 that has a higher microwave energy irradiated than the first heat generating portion 4. In addition, by making the film thickness of the first heat generating portion 4 thicker than that of the second heat generating portion 5, the amount of microwave energy absorbed in each heat generating portion can be equalized, so the heat generating layer 3 and the grill pan The unevenness of heating of the mounting surface 2 of 1 is reduced, and the performance of grilled dish cooking can be improved.
（実施の形態２）
図２は本発明の第１の実施の形態におけるグリル皿の模式図である。より具体的には、図２（ｃ）はグリル皿を裏から見た場合の平面図、図２（ｄ）は図２（ｃ）のＢ−Ｂ’の断面図である。
(Embodiment 2)
FIG. 2 is a schematic diagram of the grill pan in the first embodiment of the present invention. More specifically, FIG.2 (c) is a top view at the time of seeing a grill plate from the back, FIG.2 (d) is sectional drawing of BB 'of FIG.2 (c).
実施の形態１と異なる点は、発熱層の第１の発熱部位と第２の発熱部位の膜厚ではなく、発熱層を構成する組成物に含まれるマイクロ波吸収材料の含有量を変えた点にあり、グリル皿、発熱層に用いられる材料は実施の形態１と同じものが適用される。 The difference from the first embodiment is that the content of the microwave absorbing material contained in the composition constituting the heat generating layer is changed instead of the film thickness of the first heat generating portion and the second heat generating portion of the heat generating layer. The materials used for the grill pan and the heat generating layer are the same as those in the first embodiment.
図２において、グリル皿１は食品が載置される載置面２と載置面２の裏側に形成された発熱層６で構成されている。さらに発熱層６は、載置面２の周囲領域に位置する第１の発熱部位７と、第１の発熱部位７よりも照射されるマイクロ波エネルギーが大きい載置面２の中央領域に位置する第２の発熱部位８で構成され、この第１の発熱部位７のマイクロ波吸収材料の含有量を第２の発熱部位８のマイクロ波吸収材料の含有量よりも多くしている。 In FIG. 2, the grill pan 1 is composed of a placing surface 2 on which food is placed and a heat generating layer 6 formed on the back side of the placing surface 2. Furthermore, the heat generating layer 6 is positioned in the first heat generating portion 7 located in the peripheral region of the mounting surface 2 and the central region of the mounting surface 2 where the microwave energy irradiated from the first heat generating portion 7 is larger. The second heat generating portion 8 is configured, and the content of the microwave absorbing material in the first heat generating portion 7 is made larger than the content of the microwave absorbing material in the second heat generating portion 8.
上記のような構成のグリル皿１をマイクロ波加熱装置の加熱室内に設置し（図示せず）、マイクロ波エネルギーをグリル皿１の裏面（発熱層６側）に照射すると、発熱層６がマイクロ波エネルギーを吸収して加熱され、載置面２から伝わる熱で食品を調理することができる。 When the grill pan 1 having the above-described configuration is installed in a heating chamber of a microwave heating apparatus (not shown) and the microwave energy is applied to the back surface (the heat generating layer 6 side) of the grill pan 1, the heat generating layer 6 becomes microscopic. The food can be cooked by heat that is absorbed by the wave energy and transmitted from the mounting surface 2.
本発明の発熱層６において、照射されるマイクロ波エネルギーが小さい第１の発熱部位７は、発熱層６中のマイクロ波吸収材料の含有量を多くしているのでマイクロ波エネルギーの吸収効率が高くなり、マイクロ波エネルギーが小さくても吸収量を多くすることができる。 In the heat generating layer 6 of the present invention, the first heat generating portion 7 having a small irradiated microwave energy has a high microwave energy absorption efficiency because the content of the microwave absorbing material in the heat generating layer 6 is increased. Thus, even if the microwave energy is small, the amount of absorption can be increased.
一方、照射されるマイクロ波エネルギーが大きい第２の発熱部位８は、マイクロ波吸収材料の含有量を第１の発熱部位７より少なくしているのでマイクロ波エネルギーの吸収効率は低くなり、マイクロ波エネルギーの吸収量が抑制される。 On the other hand, since the content of the microwave absorbing material is lower than that of the first heat generating portion 7 in the second heat generating portion 8 where the microwave energy to be irradiated is large, the absorption efficiency of the microwave energy becomes low, and the microwave Energy absorption is suppressed.
その結果、発熱層６全体の温度差を小さくすることが可能となり、グリル皿１の載置面２の加熱むらが抑制されるので食品の安定した仕上がり状態が得られ、かつ均一な焼き色を付けることができ、グリル皿調理の性能を向上させることができる。 As a result, the temperature difference of the entire heat generating layer 6 can be reduced, and the uneven heating of the mounting surface 2 of the grill pan 1 can be suppressed, so that a stable finished state of the food can be obtained and a uniform baking color can be obtained. It can be attached, and the performance of grill dish cooking can be improved.
本発明は、発熱層６の形成に少なくともマイクロ波吸収材料の含有量が異なる２つの組成物を必要とするため、この組成物の製造とホットプレス加工において煩雑となるが、実施の形態１と同様な効果を得ることができる。 Since the present invention requires at least two compositions having different contents of the microwave absorbing material to form the heat generating layer 6, it becomes complicated in the production of the composition and the hot press processing. Similar effects can be obtained.
以上のように、本実施の形態においては、少なくとも発熱層６を第１の発熱部位７と、第１の発熱部位７よりも照射されるマイクロ波エネルギーが大きい第２の発熱部位８とから構成し、第１の発熱部位７のマイクロ波吸収材料の含有量を第２の発熱部位８よりも多くすることにより、それぞれの発熱部位におけるマイクロ波エネルギーの吸収量を均等化
することができるので発熱層６およびグリル皿１の載置面２の加熱むらが低減され、グリル皿調理の性能を向上させることができる。
As described above, in the present embodiment, at least the heat generating layer 6 is composed of the first heat generating portion 7 and the second heat generating portion 8 having a higher microwave energy irradiated than the first heat generating portion 7. In addition, by increasing the content of the microwave absorbing material in the first heat generating portion 7 as compared with the second heat generating portion 8, the amount of microwave energy absorbed in each heat generating portion can be equalized, so heat is generated. Uneven heating of the layer 6 and the mounting surface 2 of the grill pan 1 is reduced, and the grill pan cooking performance can be improved.
なお、実施の形態１、２では、発熱層の第１の発熱部位をグリル皿載置面の周囲領域、第２の発熱部位をグリル皿載置面の中央領域としたが、加熱室内にマイクロ波エネルギーを照射したときに生ずる定在波によるマイクロ波のエネルギーは、ミクロ的にみるとグリル皿載置面の中央領域と周囲領域においてもそれぞれ強弱があり、単純にグリル皿載置面の中央領域と周囲領域の２つに明確に分けられるものではない。 In the first and second embodiments, the first heat generating portion of the heat generating layer is the peripheral region of the grill pan mounting surface, and the second heat generating portion is the central region of the grill pan mounting surface. The microwave energy generated by standing waves generated when the wave energy is applied is strong and weak in the central area and surrounding area of the grill pan mounting surface. It is not clearly divided into two areas, the area and the surrounding area.
したがって、生ずる定在波によるマイクロ波エネルギー分布に整合させて膜厚やマイクロ波吸収材料の含有量を変えた構成の発熱部位を形成することによって、さらに加熱むらを改善することができる。 Therefore, the heating unevenness can be further improved by forming a heat generating portion having a structure in which the film thickness and the content of the microwave absorbing material are changed in accordance with the microwave energy distribution caused by the standing wave.
また、実施の形態１では発熱層の膜厚、実施の形態２ではマイクロ波吸収材料の含有量について述べたが、実施の形態１と実施の形態２の組合せも適用できる。 Further, although the film thickness of the heat generating layer is described in Embodiment 1 and the content of the microwave absorbing material is described in Embodiment 2, the combination of Embodiment 1 and Embodiment 2 can also be applied.
また、実施の形態１および２では発熱部位を２つの領域に分けた構成での効果について述べたが、さらに加熱むらを抑制するために、３つ以上の領域の発熱部位を有する発熱層としてもよい。 In Embodiments 1 and 2, the effect of the structure in which the heat generating portion is divided into two regions has been described. However, in order to further suppress heating unevenness, a heat generating layer having heat generating portions in three or more regions can be used. Good.
以上詳細に説明してきたように、本発明にかかる調理器具は、グリル皿調理の性能を向上させることが可能となるので、電子レンジ等のマイクロ波加熱装置に適用可能である。 As described above in detail, the cooking utensil according to the present invention can improve the performance of grill pan cooking, and thus can be applied to a microwave heating apparatus such as a microwave oven.
２ 載置面
３、６ 発熱層
４、７ 第１の発熱部位
５、８ 第２の発熱部位
2 Mounting surface 3, 6 Heat generation layer 4, 7 First heat generation part 5, 8 Second heat generation part
Claims (7)
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