JPH0737681A - Flat heating element - Google Patents
Flat heating elementInfo
- Publication number
- JPH0737681A JPH0737681A JP5179060A JP17906093A JPH0737681A JP H0737681 A JPH0737681 A JP H0737681A JP 5179060 A JP5179060 A JP 5179060A JP 17906093 A JP17906093 A JP 17906093A JP H0737681 A JPH0737681 A JP H0737681A
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- heat
- inorganic
- metal foil
- electric insulation
- 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.)
- Pending
Links
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、グリル調理等をガラス
セラミックスプレート上で直接行う平面発熱体に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat heating element for performing grill cooking directly on a glass ceramic plate.
【０００２】[0002]
【従来の技術】従来からのグリル調理等を調理プレート
上で直接行う平面発熱体としては、所望の回路形状に成
形した金属箔発熱体の片面もしくは両面にガラス繊維を
無機粘着材により接着した構造のもの（実公昭５１−１
０４３７号公報）や、金属薄板でラス網状に形成した面
発熱体の上下をマイカからなる２枚の絶縁層で挾み、こ
の絶縁層を有する面発熱体を鋳込み成型したプレートと
よりなるもの（特開平３−１７３０９０号公報）があっ
た。2. Description of the Related Art As a conventional flat heating element for directly performing grill cooking or the like on a cooking plate, a structure in which glass fiber is bonded to one or both sides of a metal foil heating element formed into a desired circuit shape by an inorganic adhesive material. Thing (Actual public 51-1
No. 0437 gazette) or a surface heating element formed by lath netting of a thin metal plate sandwiched by two insulating layers made of mica, and the surface heating element having the insulating layer is cast into a plate ( Japanese Patent Application Laid-Open No. 3-173090).
【０００３】また、合成マイカと無機結合剤からなる耐
熱性電気絶縁材の間に所望のパターンに成形した金属箔
発熱体を位置させて一体化し、その外表面に液晶化ガラ
スを主成分とした絶縁被覆層を形成したもの（特開平４
−３６９７７号公報）、さらにまた、耐熱性に優れ、低
熱膨張の無機接着材によって２枚のガラスセラミックス
プレートが貼着され、その間に発熱体が配置されたもの
（特開平２−２２０３８６号公報）等がある。Further, a metal foil heating element formed in a desired pattern is positioned and integrated between a heat-resistant electric insulating material composed of synthetic mica and an inorganic binder, and liquid crystal glass is the main component on the outer surface thereof. Insulating coating layer formed (Japanese Patent Application Laid-Open No. HEI 4)
In addition, two glass ceramic plates are adhered by an inorganic adhesive material having excellent heat resistance and low thermal expansion, and a heating element is arranged between them (Japanese Patent Application Laid-Open No. 2-220386). Etc.
【０００４】[0004]
【発明が解決しようとする課題】前記従来の平面発熱体
において、金属箔発熱体にガラス繊維を無機粘着材によ
り接着したものは、ガラス繊維の電気絶縁性及び耐熱性
が低い等の問題があった。次の２枚の絶縁層で挾んだ面
発熱体を鋳込み成型したものは、プレートと面発熱体間
の熱抵抗が大で、速熱性や温度の均一性がやや劣り、加
工性も悪かった。Among the above-mentioned conventional flat heating elements, the one in which glass fibers are bonded to the metal foil heating element with an inorganic adhesive material has problems such as low electrical insulation and heat resistance of the glass fibers. It was The following two insulating layers cast by molding a surface heating element sandwiched between them had a large thermal resistance between the plate and the surface heating element, a little inferior heating speed and temperature uniformity, and poor workability. .
【０００５】また、耐熱性電気絶縁材の間に金属箔発熱
体を位置させて一体化し、その外表面に絶縁被覆層を形
成したものは、液晶化ガラスの絶縁被覆層は熱伝導率が
悪いために、その表面の温度分布が均一でなく調理機器
等に用いるには問題を有していた。さらにまた無機接着
材によって貼着された２枚のガラスセラミックスプレー
トの間に発熱体が配置されたものは、液晶化ガラスフリ
ットは８００℃前後の高温で焼成する必要があり作業性
が悪かった。Further, in the case where the metal foil heating element is positioned and integrated between the heat-resistant electric insulating materials and the insulating coating layer is formed on the outer surface thereof, the insulating coating layer of liquid crystal glass has poor thermal conductivity. Therefore, the temperature distribution on the surface is not uniform, and there is a problem in using it in a cooking appliance or the like. Furthermore, in the case where the heating element is disposed between the two glass ceramic plates adhered by the inorganic adhesive, the liquid crystal glass frit needs to be fired at a high temperature of about 800 ° C., and the workability is poor.
【０００６】そこで、従来技術の問題点を解決し、作業
性が良く、耐久性に優れ、発熱体表面温度が均一な平面
発熱体を提供しようとするものである。Therefore, an object of the present invention is to solve the problems of the prior art and provide a flat heating element having good workability, excellent durability, and uniform surface temperature of the heating element.
【０００７】[0007]
【課題を解決するための手段】本発明は上記課題を解決
するためになされたものであり、金属箔発熱体素子を絶
縁材料で挾んで形成する平面発熱体において、抵抗率が
高い耐熱金属箔を所定の形状と抵抗値が得られるように
成形してなる金属箔発熱体素子に窒化アルミ、サイアロ
ン等の熱伝導に優れ電気絶縁抵抗も高いセラミックス粉
末を無機ポリマー、燐酸アルミ等の耐熱温度が高く電気
絶縁性に優れた無機接着材に混合してなる熱拡散接着材
を塗布し上部のガラスセラミックスプレートの裏面及び
アルミナ、シリカ等の電気絶縁性が良い無機材料よりな
る無機絶縁シートの上面間に接着固定し、加熱し熱拡散
接着材を半硬化状態にした後、さらに下部のガラスセラ
ミックスプレートで挾んで、加熱加圧成形して一体化し
て形成したものである。The present invention has been made to solve the above-mentioned problems, and in a flat heating element formed by sandwiching a metal foil heating element with an insulating material, a heat-resistant metal foil having a high resistivity. A metal foil heating element formed by molding to obtain a predetermined shape and resistance value is made of ceramic powder such as aluminum nitride, sialon, etc., which has excellent heat conduction and high electrical insulation resistance, and has a heat resistant temperature of inorganic polymer, aluminum phosphate, etc. Between the back surface of the upper glass-ceramic plate and the upper surface of the inorganic insulating sheet made of an inorganic material with good electrical insulation such as alumina and silica by applying a thermal diffusion adhesive mixed with an inorganic adhesive with high electrical insulation It is made by integrally bonding and fixing it to a heat-diffusing adhesive, heating it to a semi-cured state, sandwiching it with the glass ceramic plate below, and then heat-pressing and molding it together. That.
【０００８】[0008]
【作用】本発明の平面発熱体は上述の様な構成要素から
なり、所定の形状と抵抗値を有する金属箔発熱体素子に
塗布した熱拡散接着材は金属箔発熱体素子を上部のガラ
スセラミックスプレートの裏面及び無機絶縁シートの上
面間に接着固定し、金属箔発熱体素子を耐熱温度が高く
熱伝導に優れ電気絶縁性に優れたものとし、その金属箔
発熱体素子からの熱は熱拡散接着材を通してガラスセラ
ミックスプレート裏面に直ちに熱伝達され、ガラスセラ
ミックスプレートの上面を均一に加熱し、無機絶縁シー
トにより下方への熱を遮断し、さらに上部のガラスセラ
ミックスプレートと下部のガラスセラミックスプレート
とで挟み、作業性のよい２５０℃以下で硬化することに
より金属箔発熱体素子は加熱に伴う熱膨張による変形を
せず局部加熱が無くなる。これにより、異常加熱が低減
し、裏面への熱伝導を少なくし、熱効率を向上させ、美
味しい調理ができる平面発熱体を提供できる。The flat heating element of the present invention comprises the above-mentioned components, and the heat diffusion adhesive applied to the metal foil heating element having a predetermined shape and resistance is a glass ceramic on the upper side of the metal foil heating element. Adhesively fixed between the back surface of the plate and the top surface of the inorganic insulating sheet to make the metal foil heating element excellent in heat resistance, heat conduction and electrical insulation, and the heat from the metal foil heating element is diffused. Heat is immediately transferred to the back surface of the glass ceramics plate through the adhesive, the upper surface of the glass ceramics plate is uniformly heated, and the heat of the lower part is blocked by the inorganic insulating sheet. By sandwiching and curing at 250 ° C or less, which is good in workability, the metal foil heating element does not deform due to thermal expansion due to heating and no local heating occurs. It made. Thereby, abnormal heating is reduced, heat conduction to the back surface is reduced, thermal efficiency is improved, and a flat heating element capable of delicious cooking can be provided.
【０００９】[0009]
【実施例】以下本発明の一実施例につき図面を参照して
詳細に説明する。図１は本発明の一実施例を施した平面
発熱体の要部断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a sectional view of an essential part of a flat heating element according to an embodiment of the present invention.
【００１０】図において、１はフェライト系ステンレス
箔、ニッケルクロム箔、鉄クロム箔等の抵抗率が高い耐
熱金属を、所定の形状と抵抗値が得られるように成形し
てなる金属箔発熱体素子である。In the figure, reference numeral 1 denotes a metal foil heating element formed by molding a heat resistant metal having a high resistivity, such as a ferritic stainless steel foil, a nickel chrome foil, or an iron chrome foil, so as to obtain a predetermined shape and resistance value. Is.
【００１１】２は窒化アルミ（熱伝導率λ＝１５０ｋｃ
ａｌ／ｍｈｒ℃）、サイアロン等の熱伝導に優れ、電気
絶縁抵抗も高いセラミックス粉末３（３０〜６０％）
を、無機ポリマーまたは燐酸アルミ等の耐熱温度が高く
電気絶縁性に優れ、硬化させる作業温度は２５０℃程度
の無機接着材４に混合してなる熱拡散接着材である。2 is aluminum nitride (thermal conductivity λ = 150 kc
Al / mhr ° C), sialon, etc., with excellent thermal conductivity and high electrical insulation resistance. Ceramic powder 3 (30-60%)
Is an inorganic polymer or aluminum phosphate having a high heat resistance and excellent electrical insulation properties, and is a thermal diffusion adhesive obtained by mixing with an inorganic adhesive 4 having a working temperature of about 250 ° C. for curing.
【００１２】５はアルミナ、シリカ等の電気絶縁性が良
い無機材料よりなる無機絶縁シートであり、その厚さは
０．５〜２．０ｍｍを用いる。厚さが厚過ぎると引き裂
き強度が弱くなり、また薄過ぎると接着材が量的に十分
に含浸されないおそれがある。Reference numeral 5 is an inorganic insulating sheet made of an inorganic material having a good electric insulating property such as alumina or silica, and its thickness is 0.5 to 2.0 mm. If the thickness is too thick, the tear strength will be weak, and if it is too thin, the adhesive may not be sufficiently impregnated in quantity.
【００１３】６は厚さ５ｍｍ前後のガラスセラミックス
プレートであり、その耐熱温度は６００℃と高く、熱膨
張係数(α)は−２×１０~7／℃と低く急熱急冷に耐え、
熱伝導率は１.３ｋｃａｌ／ｍ．ｈｒ．℃と小さく熱の
伝導は低く、しかも機械的強度は強く、電気絶縁抵抗の
高い材料である。なお、上部で用いるガラスセラミック
スプレートを６−１、下部に用いるガラスセラミックス
プレートを６−２とする。Reference numeral 6 is a glass-ceramic plate having a thickness of about 5 mm, which has a high heat-resistant temperature of 600 ° C. and a low coefficient of thermal expansion (α) of −2 × 10 7 / ° C. and is resistant to rapid heating and quenching.
The thermal conductivity is 1.3 kcal / m. hr. It is as small as ℃ and has low heat conduction, high mechanical strength and high electrical insulation resistance. The glass ceramic plate used in the upper portion is 6-1 and the glass ceramic plate used in the lower portion is 6-2.
【００１４】金属箔発熱体素子１は熱拡散接着材２にて
上部のガラスセラミックスプレート６−１の裏面及び無
機絶縁シート５の上面に接着し、１００℃前後で加熱し
半硬化状態にして、水分等の溶剤分を蒸発させて、さら
に下部のガラスセラミックスプレート６−２で挾んで、
２５０℃前後で加熱加圧成形して一体化して平面発熱体
を構成する。The metal foil heating element 1 is adhered to the rear surface of the upper glass ceramic plate 6-1 and the upper surface of the inorganic insulating sheet 5 with the heat diffusion adhesive material 2 and heated at about 100 ° C. to be a semi-cured state. After evaporating the solvent content such as water, the glass-ceramic plate 6-2 at the lower part is sandwiched,
A flat heating element is formed by heating and pressurizing at around 250 ° C and integrating them.
【００１５】金属箔発熱体素子１は熱拡散接着材２を塗
布し、ガラスセラミックスプレート６−１及び無機絶縁
シート５との間に接着して固定され、さらにガラスセラ
ミックスプレート６−２で挾んで成形されているので、
通電による熱膨張で局部的な移動や、熱変形がまったく
なく、しかも金属箔発熱体素子１からの熱は熱拡散接着
材２を通してガラスセラミックスプレート６−１裏面に
直ちに熱伝達され、ガラスセラミックスプレート６−１
表面温度を均一に保ち、無機絶縁シート５により断熱さ
れ熱は下方向へ行かないようになり、ガラスセラミック
スプレート６−１表面に効率良く伝えることができる。The metal foil heating element 1 is coated with the heat diffusion adhesive material 2 and is fixed by being adhered between the glass ceramic plate 6-1 and the inorganic insulating sheet 5, and further sandwiched by the glass ceramic plate 6-2. Because it is molded,
There is no local movement or thermal deformation due to thermal expansion due to energization, and the heat from the metal foil heating element 1 is immediately transferred to the back surface of the glass ceramic plate 6-1 through the heat diffusion adhesive 2 and the glass ceramic plate 6-1. 6-1
The surface temperature is kept uniform, heat is insulated by the inorganic insulating sheet 5, and heat does not go downward, so that it can be efficiently transferred to the surface of the glass ceramic plate 6-1.
【００１６】[0016]
【発明の効果】以上本発明によると、金属箔発熱体素子
は熱拡散接着材を塗布し、上部のガラスセラミックスプ
レート及び無機絶縁シートとの間に接着して固定され、
さらに下部のガラスセラミックスプレートで挾んで成形
されているので、裏面への熱伝導を少なくし、通電によ
る熱膨張で局部的な移動や熱変形がまったくなく、ガラ
スセラミックスプレート表面に迅速に効率良く伝熱し、
表面温度を均一に保つことができる。これにより、直接
ガラスセラミックスプレート上で、温度むらが無く、し
かも素早く被加熱物を加熱し、美味しいグリル料理等が
できる平面発熱体を提供できる効果がある。As described above, according to the present invention, the metal foil heating element is coated with the heat diffusion adhesive and is fixed by being adhered between the upper glass ceramic plate and the inorganic insulating sheet.
Furthermore, because it is sandwiched by the lower glass ceramic plate, heat conduction to the back surface is reduced, and there is no local movement or thermal deformation due to thermal expansion due to energization, and it is quickly and efficiently transferred to the glass ceramic plate surface. Heat up
The surface temperature can be kept uniform. As a result, there is an effect that there can be provided a flat heating element which has no temperature unevenness directly on the glass-ceramic plate and can quickly heat the object to be heated so that delicious grilled food or the like can be prepared.
【図１】本発明の一実施例を施した平面発熱体の要部断
面図である。FIG. 1 is a sectional view of an essential part of a flat heating element according to an embodiment of the present invention.
１ 金属箔発熱体素子 ２ 熱拡散接着材 ３ セラミックス粉末 ４ 無機接着材 ５ 無機絶縁シート ６−１、６−２ ガラスセラミックスプレート 1 Metal Foil Heater Element 2 Thermal Diffusion Adhesive 3 Ceramics Powder 4 Inorganic Adhesive 5 Inorganic Insulation Sheet 6-1, 6-2 Glass Ceramic Plate
Claims (2)
成する平面発熱体において、抵抗率が高い耐熱金属箔を
所定の形状と抵抗値が得られるように成形してなる金属
箔発熱体素子（１）に熱拡散接着材（２）を塗布し上部
のガラスセラミックスプレート（６−１）の裏面及び無
機絶縁シート（５）の上面間に接着固定し、加熱し熱拡
散接着材（２）を半硬化状態にした後、さらに下部のガ
ラスセラミックスプレート（６−２）で挾んで、加熱加
圧成形して一体化して形成したことを特徴とする平面発
熱体。1. A flat foil heating element formed by sandwiching a metal foil heating element with an insulating material, and a metal foil heating element formed by molding a heat resistant metal foil having a high resistivity so as to obtain a predetermined shape and resistance value. The element (1) is coated with the heat diffusion adhesive (2), and the element (1) is adhesively fixed between the back surface of the glass ceramic plate (6-1) and the upper surface of the inorganic insulating sheet (5) and heated to heat the heat diffusion adhesive (2). (2) is semi-cured, and then sandwiched by the lower glass ceramics plate (6-2), and heated and pressure-molded to be integrally formed.
サイアロン等の熱伝導に優れ電気絶縁抵抗も高いセラミ
ックス粉末（３）を、無機ポリマー、燐酸アルミ等の耐
熱温度が高く電気絶縁性に優れた無機接着材（４）に混
合してなるものとし、前記無機絶縁シート（５）はアル
ミナ、シリカ等の電気絶縁性が良い無機材料よりなるも
のとした請求項１記載の平面発熱体。2. The heat diffusion adhesive material (2) is aluminum nitride,
Ceramic powder (3) having excellent heat conductivity such as sialon and high electric insulation resistance is mixed with inorganic adhesive (4) having high heat resistance and excellent electric insulation such as inorganic polymer and aluminum phosphate. The flat heating element according to claim 1, wherein the inorganic insulating sheet (5) is made of an inorganic material having good electric insulation such as alumina and silica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5179060A JPH0737681A (en) | 1993-07-20 | 1993-07-20 | Flat heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5179060A JPH0737681A (en) | 1993-07-20 | 1993-07-20 | Flat heating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0737681A true JPH0737681A (en) | 1995-02-07 |
Family
ID=16059416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5179060A Pending JPH0737681A (en) | 1993-07-20 | 1993-07-20 | Flat heating element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0737681A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0866641A2 (en) * | 1997-03-20 | 1998-09-23 | AKO-Werke GmbH & Co. KG | Electric cooking plate |
| EP1306621A1 (en) * | 2001-10-29 | 2003-05-02 | Nutri Pack Belgique S.A. | Flat heating element for food heating apparatus |
| US11648766B1 (en) * | 2021-03-03 | 2023-05-16 | Jahn Jeffery Stopperan | Process for making a flexible foil heater |
-
1993
- 1993-07-20 JP JP5179060A patent/JPH0737681A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0866641A2 (en) * | 1997-03-20 | 1998-09-23 | AKO-Werke GmbH & Co. KG | Electric cooking plate |
| EP0866641A3 (en) * | 1997-03-20 | 1998-10-21 | AKO-Werke GmbH & Co. KG | Electric cooking plate |
| EP1306621A1 (en) * | 2001-10-29 | 2003-05-02 | Nutri Pack Belgique S.A. | Flat heating element for food heating apparatus |
| US11648766B1 (en) * | 2021-03-03 | 2023-05-16 | Jahn Jeffery Stopperan | Process for making a flexible foil heater |
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