JP2001167863A - Sheet heater - Google Patents
Sheet heaterInfo
- Publication number
- JP2001167863A JP2001167863A JP34983099A JP34983099A JP2001167863A JP 2001167863 A JP2001167863 A JP 2001167863A JP 34983099 A JP34983099 A JP 34983099A JP 34983099 A JP34983099 A JP 34983099A JP 2001167863 A JP2001167863 A JP 2001167863A
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- heat
- ribbon
- heater
- heated
- 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
Landscapes
- Surface Heating Bodies (AREA)
- Resistance Heating (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はオーブンレンジ等の
箱物の調理器に用いる面状ヒータに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planar heater for use in a box cooker such as a microwave oven.
【０００２】[0002]
【従来の技術】従来の、この種の面状ヒータのほとんど
がマイカヒータまたはニクロム線ヒータであった。以下
に従来の面状ヒータについて説明する。2. Description of the Related Art Most of conventional sheet heaters of this type are mica heaters or nichrome wire heaters. Hereinafter, a conventional planar heater will be described.
【０００３】図４はマイカヒータであり、マイカ板１に
電熱線２を巻き付け、さらに２枚のマイカ板３、４で挟
み固定した構成となっている。FIG. 4 shows a mica heater in which a heating wire 2 is wound around a mica plate 1 and further sandwiched and fixed between two mica plates 3 and 4.
【０００４】通電時においては、電熱線２がまずマイカ
板３、４を加熱し、５００℃程度まで温度が上昇する。
そして温度上昇したマイカ板３、４からの２次輻射によ
って被加熱物を加熱ものである。During energization, the heating wire 2 first heats the mica plates 3 and 4, and the temperature rises to about 500.degree.
The object to be heated is heated by the secondary radiation from the mica plates 3 and 4 whose temperature has increased.
【０００５】ニクロム線ヒータを図５に示す。螺旋状と
なったニクロム線５を耐熱絶縁性の焼結体６に溝を設け
てニクロム線５の発熱体を固定した構造であり、ニクロ
ム線５の赤熱によって被加熱物を加熱する。温度的には
発熱体が露出している分だけマイカヒータよりも高温と
なっている。FIG. 5 shows a nichrome wire heater. The spiral-shaped nichrome wire 5 has a structure in which a heat-generating body of the nichrome wire 5 is fixed by providing a groove in the heat-resistant insulating sintered body 6, and the object to be heated is heated by the red heat of the nichrome wire 5. In terms of temperature, the temperature is higher than that of the mica heater because of the exposed heating element.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら上記従来
のマイカヒータでは、マイカ板３、４の表面が５００℃
程度の比較的低温であるため、他に比べて輻射エネルギ
ー量がかなり小さいという大きな課題があった。However, in the above-described conventional mica heater, the surface of the mica plates 3 and 4 is 500 ° C.
Since the temperature is relatively low, there is a big problem that the amount of radiant energy is considerably small as compared with others.
【０００７】そして、発熱体の単位長さ当たりの抵抗値
は、発熱体の寸法のバラツキ、材質のバラツキにより同
一ではないため、同一の抵抗値をもつ発熱体は長さが異
なる。このため、長さの異なる発熱体をマイカ板１に巻
回した時に発熱体の過不足が生じ、発熱体の過不足の処
理をするため巻き回しの回数を変えなければならず、面
倒な操作が必要であった。[0007] Since the resistance value per unit length of the heating element is not the same due to the variation in the dimensions of the heating element and the variation in the material, the heating elements having the same resistance value have different lengths. For this reason, when heating elements having different lengths are wound around the mica plate 1, excess or deficiency of the heating elements occurs, and the number of windings must be changed in order to handle excess or deficiency of the heating elements. Was needed.
【０００８】また、マイカ板３、４で挟んだ構造である
ため、両者間で隙間ができること、発熱体の熱がマイカ
板１、３、４に吸収されることが避けられずその分だけ
熱の伝導が悪くなり、調理に必要な温度までに上昇する
ためには長い時間を要する等の欠点があった。必要な長
さの発熱体を巻き付けるため製造工数が多くなるという
問題も有していた。Further, since the structure is sandwiched between the mica plates 3 and 4, a gap is formed between the two, and it is inevitable that the heat of the heating element is absorbed by the mica plates 1, 3 and 4. And the heat conduction becomes poor, and it takes a long time to raise the temperature to the temperature required for cooking. There is also a problem that the number of manufacturing steps is increased because a heating element having a required length is wound.
【０００９】一方、ニクロム線ヒータは輻射面であるニ
クロム線５の形状が線状であるため被加熱物に対する輻
射のエネルギーが小さく、また電熱線の熱がこれを支持
する焼結体６に伝わり、立ち上がり特性が極めて悪く、
ヒータが上面に配置される場合にはニクロム線５が熱時
に伸びて垂れが起こるという課題もあった。On the other hand, in the nichrome wire heater, since the nichrome wire 5 which is a radiation surface has a linear shape, the energy of radiation to the object to be heated is small, and the heat of the heating wire is transmitted to the sintered body 6 supporting the same. , The start-up characteristics are extremely poor,
When the heater is arranged on the upper surface, there is also a problem that the nichrome wire 5 stretches when heated and sags.
【００１０】シーズヒータや石英管ヒータ等（図示せ
ず）のチューブヒータもこの種の箱物調理器に用いられ
ている。しかしながら輻射面積を大きくとることができ
ないこと、被加熱物への輻射強度が小さいこと等の課題
があり、従って調理庫内の温度分布や被加熱物の焼けム
ラが大きいこと等の調理性能の面で、チューブヒータは
面状ヒータには到底及ばないものであった。Tube heaters such as sheathed heaters and quartz tube heaters (not shown) are also used in this type of box cooker. However, there are problems such as the fact that the radiation area cannot be large and the radiation intensity to the object to be heated is low. Therefore, in terms of cooking performance, such as the temperature distribution in the cooking chamber and the large unevenness in burning of the object to be heated. Thus, the tube heater was far from the planar heater.
【００１１】本発明は、上記課題を解決しようとするも
ので、飛躍的に輻射量を高めたヒータを実現すること、
耐久性に優れ、そして断熱性能を高めて発熱体からの熱
を逃げにくくし、かつ被加熱物を有効に加熱するために
ヒータの輻射量をより大きくとれるような構造としたも
のである。[0011] The present invention is to solve the above-mentioned problems, and to realize a heater having a remarkably increased radiation amount.
The structure is such that the durability is excellent, the heat insulation performance is enhanced, the heat from the heating element is hard to escape, and the amount of radiation from the heater can be increased to effectively heat the object to be heated.
【００１２】[0012]
【課題を解決するための手段】本発明は上記の目的を達
成するためにするため、断熱材の上面に切り込み溝を設
け、発熱体には襞付きのリボン状発熱体を用い、そのリ
ボンの幅方向の面を被加熱物と相対するよう断熱材に設
けた切り込み溝に襞付きのリボン状発熱体を挿入したも
のである。In order to achieve the above object, the present invention provides a cutout groove on the upper surface of a heat insulating material, and uses a pleated ribbon-like heating element as a heating element. A pleated ribbon-like heating element is inserted into a cut groove provided in a heat insulating material so that the surface in the width direction faces the object to be heated.
【００１３】また、断熱材をＦｕｍｅｄＳｉｌｉｃａの
圧縮成形体としたものである。Further, the heat insulating material is a compression molded body of FumedSilica.
【００１４】また、断熱材の上面から発熱体の襞の部分
が飛び出ることがないように断熱材の上面に設けた溝の
深さを発熱体の襞の高さ以上にすることによって、発熱
体とこの発熱体を覆う耐熱性絶縁基材とが直接接触しな
いようにしたものである。Further, the depth of the groove provided on the upper surface of the heat insulator is set to be equal to or greater than the height of the fold of the heat generator so that the fold of the heat generator does not jump out of the upper surface of the heat insulator. And the heat-resistant insulating base material covering the heating element is prevented from coming into direct contact.
【００１５】上記構成の発明によれば、ヒータの輻射面
積が大きくなって被加熱物に対しては、より高輻射量が
得られるとともに、襞付きにしているため熱時の伸びを
吸収して変形、垂れ等を防止することができるものであ
る。更に、襞付きであるため断熱材の切り込み溝に発熱
体を挿入した際にも断熱材と発熱体の接触は襞部の先端
のみであり、必要最小限にするこたができる。According to the invention having the above structure, the radiating area of the heater is increased, so that a higher radiation amount can be obtained for the object to be heated. Deformation, sagging, etc. can be prevented. Furthermore, because of the folds, even when the heating element is inserted into the cut groove of the heat insulating material, the contact between the heat insulating material and the heating element is only at the tip of the fold portion, and it is possible to minimize the contact.
【００１６】ＦｕｍｅｄＳｉｌｉｃａは熱伝導率が静止
空気よりも小さく、極小レベルのものであるため断熱性
能が飛躍的に高まって熱の逃げによるロスもなくなり、
被加熱物を有効に加熱することができる。耐熱性絶縁基
材で発熱体を覆っているため調理時の調理物や調味料等
の飛散による付着をなくして発熱体の腐食等の発生を防
止し、かつ耐熱性絶縁基材が発熱体に接触することもな
いので、発熱体の熱時の温度低下や輻射強度の低下をま
ねくようなこともないものである。FumedSilica has a thermal conductivity smaller than that of still air and is of a very small level, so that its heat insulating performance is dramatically improved and loss due to heat escape is eliminated.
The object to be heated can be effectively heated. Since the heating element is covered with a heat-resistant insulating base material, it does not adhere to the cooking element or seasoning when it is cooked, thereby preventing corrosion of the heating element or the like. Since there is no contact, the temperature of the heating element does not drop when heated and the radiation intensity does not drop.
【００１７】さらに、耐熱絶縁基材は断熱材に載置する
形となるので余計な空間を必要とせず、かつ機械的強度
もあまり必要としないので厚みの薄い物を使用すること
ができる。したがって、温度上昇が速く、小型にするこ
とができるものである。Further, since the heat-resistant insulating substrate is placed on the heat insulating material, it does not require extra space and does not require much mechanical strength, so that a thin material can be used. Therefore, the temperature rises quickly and the size can be reduced.
【００１８】[0018]
【発明の実施の形態】本発明の請求項１に記載の発明
は、断熱材と、襞付きのリボン状発熱体と、耐熱性絶縁
基材とからなり、前記断熱材の上面に切り込み溝を備
え、前記切り込み溝に前記襞付きのリボン状発熱体を、
その幅方向が被加熱物と相対するように挿入したもので
あって、前記襞付きのリボン状発熱体を覆うように前記
耐熱性絶縁基材を配置したものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a heat insulating material, a pleated ribbon-like heating element, and a heat-resistant insulating base material, wherein a cut groove is formed on the upper surface of the heat insulating material. Provided, the slit-shaped ribbon-shaped heating element in the cut groove,
The heat-resistant insulating base material is inserted so that its width direction faces the object to be heated, and the heat-resistant insulating base material is arranged so as to cover the pleated ribbon-shaped heating element.
【００１９】これにより、襞付きのリボン状発熱体を用
いたため被加熱物に対して輻射面積が著しく大きくな
り、発熱体の配置もリボン状の、その幅方向の面が被加
熱物と相対するようにしているため、せっかくの輻射面
積を損なうことなく、大きい輻射エネルギーを得ること
ができるものである。また、耐熱性、耐食性に優れた絶
縁基材を用いて覆っているため発熱体の調理物の飛散に
よる付着や食塩等からの腐食をなくし、耐久性を高める
ことができる。[0019] With this arrangement, the radiating area of the object to be heated is remarkably increased due to the use of the pleated ribbon-like heating element, and the arrangement of the heating element is also in the form of a ribbon. As a result, a large radiation energy can be obtained without impairing the radiation area. Further, since the heating element is covered with an insulating base material having excellent heat resistance and corrosion resistance, adhesion of the heating element due to scattering of the cooked food and corrosion from salt or the like can be eliminated, and the durability can be improved.
【００２０】また、本発明の請求項２に記載の発明は、
断熱材として超微細多孔構造を有するＦｕｍｅｄＳｉｌ
ｉｃａの圧縮成形体を用いたものである。The invention according to claim 2 of the present invention provides:
FumedSil with ultra-fine porous structure as heat insulator
ica using a compression molded body.
【００２１】ＦｕｍｅｄＳｉｌｉｃａの断熱材は熱伝導
率が各種断熱材の中では極小値の性能を有するものであ
るため断熱が確実となって熱の逃げも少なく、断熱材表
面の赤外線の反射が金属並に大きく良好に熱が反射され
るため発熱体からの熱を被加熱物の加熱ために有効に供
することができる。The thermal insulation of FumedSilica has the lowest thermal conductivity among various types of thermal insulation, so that thermal insulation is assured and heat escape is small, and the infrared reflection on the surface of the thermal insulation is comparable to that of metal. Therefore, heat from the heating element can be effectively used for heating the object to be heated.
【００２２】また、本発明の請求項３に記載の発明は、
前記断熱材の上面に切り込み溝を備えたものあって、前
記切り込み溝の深さが前記襞付きのリボン状発熱体の、
前記襞の高さ以上として前記発熱体と前記発熱体を覆う
前記耐熱性絶縁基材とが接触しないようにしたものであ
る。Further, the invention according to claim 3 of the present invention provides:
There is a cutout groove on the upper surface of the heat insulating material, the depth of the cutout groove of the pleated ribbon-like heating element,
The heating element and the heat-resistant insulating base material that covers the heating element do not come into contact with each other at a height equal to or higher than the height of the fold.
【００２３】これにより、発熱体と耐熱性絶縁基材とが
接触し、赤熱した発熱体からの熱を奪って輻射強度を低
下させたりすることもなくなるものである。Thus, the heating element and the heat-resistant insulating base material do not come into contact with each other, so that heat from the heated heating element does not decrease to lower the radiation intensity.
【００２４】[0024]
【実施例】以下、本発明の実施例について図面を用いて
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００２５】（実施例１）図１は本発明の実施例１の面
状ヒータを示す平面図、図２は同面状ヒータのＡ−Ａ′
断面図である。(Embodiment 1) FIG. 1 is a plan view showing a planar heater according to Embodiment 1 of the present invention. FIG.
It is sectional drawing.
【００２６】図１、図２において、７は襞付きのリボン
状発熱体、８は前記襞付きのリボン状発熱体７を挿入す
るための切り込み溝９を有する断熱材である。断熱材８
はＦｕｍｅｄＳｉｌｉｃａの圧縮成形体であり、不透過
剤や無機質の短繊維ファイバー等の補強剤を含有してい
る。ＦｕｍｅｄＳｉｌｉｃａは極限的に微細なセルの多
孔構造からなるものであり、その熱伝導率は静止空気の
それよりもはるかに小さく、各種断熱材料の中でも極小
値を示すものである。また不透過剤等の添加、混合によ
って、赤外線の透過が最小限のレベルになり、金属と同
等レベルの高い赤外線の反射率を有しているものであ
る。1 and 2, reference numeral 7 denotes a pleated ribbon-shaped heating element, and reference numeral 8 denotes a heat insulating material having a cut groove 9 for inserting the pleated ribbon-shaped heating element 7. Insulation material 8
Is a compression molded product of FumedSilica, and contains a reinforcing agent such as an impermeable agent and inorganic short fiber fibers. FumedSilica has an extremely fine cell porous structure, its thermal conductivity is much smaller than that of still air, and it shows the smallest value among various heat insulating materials. The addition and mixing of an opaque agent or the like minimizes the transmission of infrared rays and has a high level of infrared reflectance similar to that of metal.
【００２７】断熱材８の厚みは切り込み溝９の底から１
０mmとしている。襞付きのリボン状発熱体７は前記切り
込み溝９に、リボンの幅方向の面が被加熱物と相対する
ように挿入しているため輻射面を著しく大きくすること
が可能となっている。さらに、前記襞付きのリボン状発
熱体７を覆うように、襞付きのリボン状発熱体７と接触
させないよう耐熱性絶縁基材１０が配置されている。耐
熱性絶縁基材１０としては、厚みが１．８mmの結晶化ガ
ラス板を用いている。１１はこれらの構成材料を収納す
る耐熱容器である。ステンレス製を用いている。ここ
で、襞付きのリボン状発熱体７にはＮｉ―Ｃｒ系を用
い、厚みは６５μmリボンの幅は５mm、襞部分は鋸歯状
とし、ピッチが４mm、襞の部分の高さは４mmとしてい
る。The thickness of the heat insulating material 8 is 1 from the bottom of the cut groove 9.
It is 0 mm. Since the pleated ribbon-like heating element 7 is inserted into the cut groove 9 such that the surface in the width direction of the ribbon faces the object to be heated, the radiation surface can be significantly increased. Further, a heat-resistant insulating base material 10 is arranged so as to cover the pleated ribbon-shaped heating element 7 so as not to come into contact with the pleated ribbon-shaped heating element 7. As the heat-resistant insulating base material 10, a crystallized glass plate having a thickness of 1.8 mm is used. Reference numeral 11 denotes a heat-resistant container for storing these constituent materials. Stainless steel is used. Here, the pleated ribbon-like heating element 7 is made of a Ni—Cr system, the thickness is 65 μm, the width of the ribbon is 5 mm, the fold part is saw-toothed, the pitch is 4 mm, and the height of the fold part is 4 mm. .
【００２８】ＦｕｍｅｄＳｉｌｉｃａの断熱材８に、襞
付きのリボン状発熱体７を挿入するための切り込み溝９
は、深さを５mmとして１mmほど襞付きのリボン状発熱体
７の襞部分よりも深くして、切り込み溝９に襞付きのリ
ボン状発熱体７が沈むような構造としており、襞付きの
リボン状発熱体７の上部が耐熱絶縁基材１０と接触する
ことはない。Cut grooves 9 for inserting pleated ribbon-like heating elements 7 into insulation material 8 of FumedSilica.
Has a structure in which the depth is 5 mm and the fold portion of the pleated ribbon-like heating element 7 is about 1 mm deeper than the fold portion of the pleated ribbon-like heating element 7 so that the pleated ribbon-like heating element 7 sinks in the cut groove 9. The upper part of the heating element 7 does not come into contact with the heat-resistant insulating substrate 10.
【００２９】切り込み溝９の幅はリボン状発熱体７より
も若干狭くしている。そして襞付きのリボン状発熱体７
を挿入する時に押し込むようにすればより確実に固定で
きる。The width of the cut groove 9 is slightly smaller than that of the ribbon-shaped heating element 7. And a pleated ribbon-like heating element 7
If you insert it when inserting it, it can be fixed more securely.
【００３０】本実施例の面状ヒータの消費電力は１００
Ｖ、７５０Ｗとしている。The power consumption of the planar heater of this embodiment is 100
V, 750 W.
【００３１】次に動作、作用について説明すると、ヒー
タに通電すると、発熱体がリボン状の薄板であること、
ＦｕｍｅｄＳｉｌｉｃａによって断熱が十分であること
によって、約２秒程度で瞬時に赤熱状態となってヒータ
の所定温度に到達する。Next, the operation and function will be described. When the heater is energized, the heating element is a ribbon-shaped thin plate.
When the heat insulation is sufficient by FumedSilica, the heater becomes instantaneously red in about 2 seconds and reaches a predetermined temperature of the heater.
【００３２】リボン状で、襞付きとしているため投影輻
射面積に顕著な違いがあり、チューブタイプのヒータに
比べて約５倍程度、従来のマイカ板タイプの面状ヒータ
に比べても約２倍強であり、被加熱物に対して高輻射量
を得ることができる。Because of the ribbon shape and the folds, there is a remarkable difference in the projected radiation area, about 5 times as large as the tube type heater, and about 2 times as large as the conventional mica plate type planar heater. It is strong, and a high radiation amount can be obtained for the object to be heated.
【００３３】立ち上がりの速さと高輻射が特徴的であ
り、さらには、発熱体の輻射面は耐熱性絶縁基材１０で
覆われており、食品の調理時において、直接食塩等の付
着がないため発熱体の腐食を防止することができる。It is characterized by a rising speed and high radiation, and furthermore, the radiation surface of the heating element is covered with a heat-resistant insulating base material 10 so that no salt or the like adheres directly during cooking of food. Corrosion of the heating element can be prevented.
【００３４】また、発熱した時の発熱体の伸びも襞の部
分で吸収するため発熱体の垂れ下がり等がないものであ
る。Further, since the elongation of the heating element when heat is generated is absorbed by the folds, the heating element does not sag.
【００３５】高周波加熱装置のヒータとして、装置に実
装して４ヶ月間の断続通電試験（１０分通電、５分非通
電）を行ったが、襞付きのリボン状発熱体７には断線等
の問題は全くなかった。耐久信頼性の面でも十分な性能
を有している。As a heater of the high-frequency heating device, the device was mounted on the device and subjected to an intermittent energizing test (energized for 10 minutes, deenergized for 10 minutes) for 4 months. There was no problem at all. It has sufficient performance in terms of durability and reliability.
【００３６】なお、ヒータ線の厚みや幅、ピッチ、襞の
高さ、そして断熱材に設けた溝の深さ、幅、ヒータの消
費電力等々の実施例に示す数値については、特に限定す
るものではない。これらに幅をもって任意に選定するこ
とができる。The numerical values shown in the examples, such as the thickness and width of the heater wire, the pitch, the height of the fold, the depth and width of the groove provided in the heat insulating material, and the power consumption of the heater, are not particularly limited. is not. These can be arbitrarily selected with a width.
【００３７】また、ヒータ線の引き回し方法やヒータの
材質も同様である。襞の形状についても鋸歯状に限ら
ず、波形やコの字状さらにはＵの字状でも、幅方向が被
加熱物と相対するように配置することができるものであ
れば使用することは可能である。The same applies to the method of arranging the heater wires and the material of the heater. The shape of the folds is not limited to the sawtooth shape, and it is possible to use a waveform, a U-shape, or a U-shape as long as the width direction can be arranged so as to face the object to be heated. It is.
【００３８】耐熱絶縁基材１０は発熱体の腐食を防止す
るためのものであり、マイカ板や無機質繊維を編組した
クロス状のもの、他の９６％シリカガラス板等でも同様
の効果が得られるものである。The heat-resistant insulating substrate 10 is for preventing corrosion of the heating element, and the same effect can be obtained by using a mica plate, a cloth-like braided inorganic fiber, or another 96% silica glass plate. Things.
【００３９】耐熱容器１１をステンレス製としている
が、セラミック容器や断熱層の厚みを大きくすれば、耐
熱性のプラスチックについてもトータルでのコストや耐
熱耐久性等を勘案して使用することも可能である。Although the heat-resistant container 11 is made of stainless steel, if the thickness of the ceramic container or the heat insulating layer is increased, it is also possible to use heat-resistant plastic in consideration of the total cost, heat-resistant durability and the like. is there.
【００４０】（実施例２）図３は本発明の実施例２の面
状ヒータを示す横断面図である。(Embodiment 2) FIG. 3 is a cross-sectional view showing a planar heater according to Embodiment 2 of the present invention.
【００４１】実施例２において、実施例１と異なる点は
耐熱容器１１と襞付きのリボン状発熱体７との間に絶縁
材１２を配置したものである。The second embodiment differs from the first embodiment in that an insulating material 12 is disposed between a heat-resistant container 11 and a pleated ribbon-like heating element 7.
【００４２】絶縁材１２には本実施例では１mmのアルミ
ナ板を用いた。In this embodiment, a 1 mm alumina plate is used as the insulating material 12.
【００４３】なお、実施例１と同一符号のものは同一構
造を有し、説明は省略する。The components having the same reference numerals as in the first embodiment have the same structure, and the description is omitted.
【００４４】次に動作、作用を説明すると、ヒータを実
装する加熱装置のヒータ容量が大きく、耐熱容器１１が
高温となり、金属材料にその使用が限定され、更に調理
メニューによっては水蒸気の発生が多くなるような、高
湿度環境下で使用するようなケースにあっても、金属製
の耐熱容器１１と襞付きのリボン状発熱体７の間に絶縁
材１２を介しているため絶縁劣化をおこすことがないも
のである。Next, the operation and function will be described. The heater capacity of the heating device in which the heater is mounted is large, the temperature of the heat-resistant container 11 becomes high, its use is limited to metal materials, and the generation of steam is large depending on the cooking menu. Even in a case where the device is used in a high-humidity environment, the insulation may be deteriorated because the insulating material 12 is interposed between the heat-resistant container 11 made of metal and the pleated ribbon-like heating element 7. There is no one.
【００４５】なお、絶縁材１２としてはマイカ板や他の
セラミック基板、結晶化ガラス、強化ガラス等において
も同様の効果が得られるものであり、また、その厚みに
ついても実施例に限定するものではない。It should be noted that the same effect can be obtained by using a mica plate, another ceramic substrate, crystallized glass, tempered glass or the like as the insulating material 12, and the thickness is not limited to the embodiment. Absent.
【００４６】[0046]
【発明の効果】以上説明したように請求項１の発明は、
輻射特性のよい襞付きのリボン状発熱体を断熱材に設け
た切り込み溝に、リボンの幅方向の面が被加熱物と相対
するように挿入した構成としてあるので、極めて高い輻
射量が得られるとともに、発熱体の熱時の垂れ下がりも
襞の部分により吸収して防止することができる。さら
に、耐熱絶縁基材を発熱体を覆うように配置して腐食原
因物質から発熱体を保護する構成としてあるので、調理
時の発熱体の腐食がなくなり耐久性を高めることができ
る。また本発明は、発熱体が襞付きであるため、発熱体
を断熱材の切り込み溝に挿入した際も接触面積が最小限
に抑えられ、両者の接触により熱が奪われることもな
く、さらに断熱材の上面の切り込み溝の深さを発熱体の
襞の高さよりも大きくしているので載置したの耐熱性絶
縁基材が発熱体に接触することもないため、赤熱状態と
なつた発熱体が熱を奪われて温度低下をおこすこともな
いという効果がある。As described above, the first aspect of the present invention is:
An extremely high radiation amount can be obtained because a pleated ribbon-like heating element having good radiation characteristics is inserted into the cut groove provided in the heat insulating material so that the surface in the width direction of the ribbon faces the object to be heated. At the same time, sagging of the heating element when it is hot can be absorbed and prevented by the folds. Further, since the heat-resistant insulating base material is arranged so as to cover the heating element to protect the heating element from corrosion-causing substances, the heating element does not corrode during cooking and durability can be improved. Further, according to the present invention, since the heating element has a fold, the contact area is minimized even when the heating element is inserted into the cut groove of the heat insulating material. Since the depth of the cut groove on the upper surface of the material is greater than the height of the fold of the heating element, the placed heat-resistant insulating base material does not contact the heating element, so the heating element is in a red-hot state. Has the effect that heat is not taken away and the temperature does not drop.
【００４７】また請求項２の発明は、ＦｕｍｅｄＳｉｌ
ｉｃａの断熱材を用い、熱伝導をこれ以上はできないと
いうレベルまで小さくしているので、発熱体の熱の逃げ
によるロスがなく、赤外線の反射も極めて大きくしてい
るため、高輻射型の面状ヒータを実現することができる
ものである。The invention according to claim 2 is based on FumedSil.
The use of ica heat insulating material reduces the heat conduction to a level where it cannot be further increased, so there is no loss due to the escape of heat from the heating element, and the reflection of infrared rays is extremely large, so high radiation type surfaces It is possible to realize a shaped heater.
【００４８】また請求項３の発明は、断熱材の上面の切
り込み溝の深さを襞付きのリボン状発熱体の襞の部分の
高さよりも大きくしているので、発熱体を覆うように断
熱材上に載置した耐熱生絶縁基材が発熱体と接触するこ
とがないため、赤熱状態となった発熱体が絶縁基材に熱
を奪われて温度低下をきたすこともないという効果があ
る。According to the third aspect of the present invention, since the depth of the cut groove on the upper surface of the heat insulating material is made larger than the height of the fold portion of the ribbon-like heating element having a fold, the heat insulation is provided so as to cover the heating element. Since the heat-resistant raw insulating substrate placed on the material does not come into contact with the heating element, there is an effect that the heating element in the red-hot state does not lose heat to the insulating substrate and cause a temperature drop. .
【図１】本発明の実施例１における面状ヒータの平面図FIG. 1 is a plan view of a planar heater according to a first embodiment of the present invention.
【図２】同面状ヒータのＡ−Ａ′部分の断面図FIG. 2 is a sectional view of an AA 'portion of the planar heater.
【図３】本発明の実施例２における面状ヒータの断面図FIG. 3 is a sectional view of a planar heater according to a second embodiment of the present invention.
【図４】従来のマイカヒータの概略斜視図FIG. 4 is a schematic perspective view of a conventional mica heater.
【図５】従来のニクロムヒータの概略斜視図FIG. 5 is a schematic perspective view of a conventional nichrome heater.
７ 襞付きのリボン状発熱体 ８ 断熱材 ９ 切り込み溝 １０ 耐熱性絶縁基材 7 Folded ribbon-shaped heating element 8 Insulation material 9 Cut groove 10 Heat-resistant insulating base material
フロントページの続き (72)発明者 釘井 康雄 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Ｆターム(参考） 3K034 AA03 AA04 AA16 AA20 AA22 BB04 BB14 BC08 BC15 FA02 FA04 FA05 FA24 HA01 HA10 3K092 PP01 QA05 QB10 QB33 QB45 RF03 RF11 RF20 RF25 SS02 SS04 SS05 SS32 SS39 TT06 VV09 Continued on the front page (72) Inventor Yasuo Kunai 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 3K034 AA03 AA04 AA16 AA20 AA22 BB04 BB14 BC08 BC15 FA02 FA04 FA05 FA24 HA01 HA10 3K092 PP01 QA05 QB10 QB33 QB45 RF03 RF11 RF20 RF25 SS02 SS04 SS05 SS32 SS39 TT06 VV09
Claims (3)
熱性絶縁基材とからなり、前記断熱材の上面に切り込み
溝を備え、前記切り込み溝に前記襞付きのリボン状発熱
体を、その幅方向が被加熱物と相対するように挿入し、
前記襞付きのリボン状発熱体を覆うように前記耐熱性絶
縁基材を配置した面状ヒータ。1. A heat-insulating material, a pleated ribbon-shaped heating element, and a heat-resistant insulating base material, wherein the heat-insulating material has a cut groove on an upper surface thereof, and the cut groove has the pleated ribbon-shaped heat generator. Is inserted so that its width direction faces the object to be heated,
A planar heater in which the heat-resistant insulating substrate is disposed so as to cover the pleated ribbon-shaped heating element.
ｄＳｉｌｉｃａの圧縮成形体を用いたことを特徴とする
請求項１記載の面状ヒータ。2. The heat insulating material has an ultra-fine porous structure.
The planar heater according to claim 1, wherein a compression molded body of dSilica is used.
熱体の襞の高さ以上とし、前記襞付きのリボン状発熱体
と、前記襞付きのリボン状発熱体を覆う前記耐熱性絶縁
基材とが接触しないようにした請求項１記載の面状ヒー
タ。3. The heat resistance covering the pleated ribbon-shaped heating element and the pleated ribbon-shaped heating element, wherein a depth of the cut groove is not less than a height of the pleated ribbon-shaped heating element. The planar heater according to claim 1, wherein the planar heater does not come into contact with the insulating base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34983099A JP2001167863A (en) | 1999-12-09 | 1999-12-09 | Sheet heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34983099A JP2001167863A (en) | 1999-12-09 | 1999-12-09 | Sheet heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001167863A true JP2001167863A (en) | 2001-06-22 |
Family
ID=18406408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34983099A Pending JP2001167863A (en) | 1999-12-09 | 1999-12-09 | Sheet heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001167863A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101032412B1 (en) * | 2008-09-19 | 2011-05-03 | 주식회사 아모그린텍 | A surface type heater for defrost and method for manufacturing the heater and defrost apparatus using the same |
| JP2017064769A (en) * | 2015-10-01 | 2017-04-06 | 日立金属株式会社 | Heating device and method for manufacturing forged product |
-
1999
- 1999-12-09 JP JP34983099A patent/JP2001167863A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101032412B1 (en) * | 2008-09-19 | 2011-05-03 | 주식회사 아모그린텍 | A surface type heater for defrost and method for manufacturing the heater and defrost apparatus using the same |
| JP2017064769A (en) * | 2015-10-01 | 2017-04-06 | 日立金属株式会社 | Heating device and method for manufacturing forged product |
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