JPH11242985A - Carbonic heating element - Google Patents
Carbonic heating elementInfo
- Publication number
- JPH11242985A JPH11242985A JP28004598A JP28004598A JPH11242985A JP H11242985 A JPH11242985 A JP H11242985A JP 28004598 A JP28004598 A JP 28004598A JP 28004598 A JP28004598 A JP 28004598A JP H11242985 A JPH11242985 A JP H11242985A
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- carbon
- kinds
- heat generation
- silica
- 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、発熱体として必要
な任意の固有抵抗値と形状を有する炭素系発熱体に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carbon-based heating element having an arbitrary specific resistance value and shape required for a heating element.
【０００２】[0002]
【従来の技術】従来、抵抗用発熱体としては主としてタ
ングステン線やニクロム線などの金属線加工品と等方性
炭素材料やガラス状炭素などの炭素の切削加工品、炭化
珪素などの金属化合物が使用されてきた。その中でも金
属線の加工品は主として小型の民生機器のヒーター用発
熱体として、炭素や金属化合物は産業用炉などに使用さ
れている。2. Description of the Related Art Conventionally, as a heating element for resistance, a metal wire product such as a tungsten wire or a nichrome wire, a carbon cut product such as an isotropic carbon material or glassy carbon, and a metal compound such as silicon carbide are mainly used. Have been used. Of these, processed metal wires are mainly used as heating elements for heaters of small consumer appliances, and carbon and metal compounds are used in industrial furnaces and the like.
【０００３】従来の発熱体用素材の中でも炭素は、金属
線などと異なり、発熱速度、発熱効率、遠赤外線の発生
効率が良いなど優れた特徴を有している。しかし従来の
炭素発熱体は、大きな板形状体やブロック形状体より切
削加工により作製するため製造工程が煩雑で高価なうえ
細い物や薄い物など作製することが困難である。また、
ある規格範囲の固有抵抗値を有するブロック体などから
切削するため発熱量の制御は形状を変えるしか方策がな
いなどの問題点を有している。[0003] Among the conventional heating element materials, carbon has excellent characteristics such as good heat generation speed, heat generation efficiency, and far infrared ray generation efficiency, unlike metal wires and the like. However, since the conventional carbon heating element is manufactured by cutting a large plate-shaped body or block-shaped body, the manufacturing process is complicated, expensive, and it is difficult to manufacture a thin or thin object. Also,
In order to cut from a block or the like having a specific resistance value within a certain standard range, there is a problem that the control of the heat generation amount has no alternative but to change the shape.
【０００４】そこで本発明者らは特願平９−２５８８９
３号において薄板形状だけでなく細い棒形状体、細い円
柱形状体など従来の炭素材料では得ることのできない形
状を得ることが可能なうえ任意の固有抵抗値を有するこ
とで広範な設定電流・電位の印加による発熱制御が可能
で、発熱体としての炭素材料が持つ発熱速度、発熱効
率、遠赤外線の発生効率に優れた炭素系発熱体として、
塩素化塩化ビニル樹脂、フラン樹脂等の賦形性を有し焼
成後実質的に零でない炭素残査収率を示す組成物と、金
属或いは半金属化合物の一種または二種以上を混合し、
焼成することによって、製造される炭素系発熱体を提案
した。Accordingly, the present inventors have filed Japanese Patent Application No. 9-25889.
In No. 3, it is possible to obtain shapes that cannot be obtained with conventional carbon materials, such as thin rods, thin rods, and thin cylinders, as well as a thin plate shape. It is possible to control the heat generation by applying heat, and as a carbon-based heating element with excellent heat generation rate, heat generation efficiency and far infrared ray generation efficiency of the carbon material as the heating element,
Chlorinated vinyl chloride resin, a composition having shapeability such as furan resin and exhibiting substantially non-zero carbon residue yield after firing, and mixing one or more kinds of metal or metalloid compounds,
A carbon-based heating element manufactured by firing is proposed.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら上記出願
の実施例としての炭素系発熱体は、フラン樹脂、ポリイ
ミド樹脂等の高価な樹脂が使用されている。また焼成す
ることによりこれらの樹脂が炭素化され結合材となるた
め、炭素化収率の制御や発熱体の形状等の制御を行なう
のが困難であり、これらの制御を行なうにはエネルギ管
理等にコストがかかるのが現状であり、問題である。However, expensive materials such as furan resin and polyimide resin are used for the carbon-based heating element as an embodiment of the above-mentioned application. In addition, since these resins are carbonized into a binder by firing, it is difficult to control the carbonization yield and control the shape of the heating element. Is costly at present, and is a problem.
【０００６】したがって本発明の目的は、上記の特徴を
有する炭素系発熱体を安価に提供することにある。Accordingly, an object of the present invention is to provide a carbon-based heating element having the above characteristics at a low cost.
【０００７】[0007]
【課題を解決するための手段】本発明によれば、炭素粉
末と、カオリナイト系、セリサイト系、モンモリロナイ
ト系、ベントナイト系等の粘土類、ゼオライト、ケイソ
ウ土、活性白土、シリカ、リン酸アルミニウム、シリコ
ーン樹脂、シリコーンゴム等の一種または二種以上の無
機結合材とを混合し、焼成して得られる炭素系発熱体が
提供される。According to the present invention, carbon powder, kaolinite-based, sericite-based, montmorillonite-based, bentonite-based clays, zeolite, diatomaceous earth, activated clay, silica, aluminum phosphate And a carbon-based heating element obtained by mixing with one or more inorganic binders such as silicone resin, silicone rubber and the like, followed by firing.
【０００８】焼成前に酸化チタン、雲母、タルク、窒化
硼素、シリカ、アルミナ、炭酸カルシウム、二硫化モリ
ブテン、二硫化タングステン等の一種または二種以上の
体質材がさらに混合されることが好適である。粘度の融
着による発熱体の方が、エネルギコスト、形状管理の面
で低コストである。また、結合材としての粘土類は、フ
ラン樹脂、ポリイミド樹脂等の樹脂と比べて安価である
が、それを焼結して得られるものの融点は１２００℃程
度が限界であり、それ以上では発熱体が融けてしまうと
いう問題はある。しかし、温度が低いほど遠赤外線の放
射効率が良いことが良く知られており、それをねらった
用途に限定して使用する限り充分使用に耐え得るもので
ある。[0008] It is preferable that one or two or more kinds of body materials such as titanium oxide, mica, talc, boron nitride, silica, alumina, calcium carbonate, molybdenum disulfide, and tungsten disulfide are further mixed before firing. . The heating element formed by the fusion of the viscosities is lower in energy cost and shape management. Clays as binders are inexpensive compared to resins such as furan resin and polyimide resin, but the melting point of those obtained by sintering them is about 1200 ° C. However, there is a problem that it melts. However, it is well known that the lower the temperature, the better the radiation efficiency of far-infrared rays, and it can withstand use as long as it is used only for the purpose for which it is intended.
【０００９】前述の炭素粉末としては、カーボンブラッ
ク、黒鉛、コークス粉等が挙げられるが、使用する炭素
粉末種と量は、目的とする発熱体の抵抗値・形状により
適宜選択され、単独でも二種以上の混合体でも使用する
ことができるが、特に形状制御の簡易さから黒鉛を使用
することが好ましい。本発明では、前述の炭素粉は電気
良導体として、そして無機結合材及び体質材は導電阻害
物質として作用しており、電流は導電阻害物質を飛び越
え、いわゆるホッピングしながら炭素粉末を媒体として
流れる。この為これら２つないし３つの成分の種類やそ
の比率等を変え、それらを均一に混合、分散させ焼成す
ることにより、所望の固有抵抗値を有する本発明の炭素
系発熱体を得ることができる。Examples of the above-mentioned carbon powder include carbon black, graphite, coke powder and the like. The type and amount of the carbon powder to be used are appropriately selected depending on the resistance value and shape of the desired heating element. Mixtures of more than one species can be used, but it is particularly preferred to use graphite for ease of shape control. In the present invention, the above-mentioned carbon powder acts as a good electric conductor, and the inorganic binder and the body material act as a conduction inhibitor. Electric current jumps over the conduction inhibitor and flows using the carbon powder as a medium while hopping. Therefore, by changing the types and ratios of these two or three components, uniformly mixing and dispersing them and firing, the carbon-based heating element of the present invention having a desired specific resistance value can be obtained. .
【００１０】また本発明の炭素系発熱体は、発熱速度、
発熱効率、遠赤外線の発生効率など発熱体としての優れ
た特徴を具備し、設計どおりの抵抗値と形状を有するた
め、設定電流・電位の印加により発熱量を容易に制御す
ることが可能である。但し、発熱量を制御する際には、
場合によりかなりの高温になることから、アルゴンガス
等の不活性ガス雰囲気とした容器中で使用することで、
酸化を防止する必要がある。またこの時遠赤外線の発生
効率の妨げとならずに高温に耐える石英等の透明な容器
を用いることが望ましい。The carbon-based heating element of the present invention has a heating rate,
It has excellent characteristics as a heating element, such as heat generation efficiency and far-infrared ray generation efficiency, and has the designed resistance value and shape. Therefore, it is possible to easily control the amount of heat generation by applying a set current and potential. . However, when controlling the calorific value,
In some cases, the temperature can be quite high, so by using it in a container with an inert gas atmosphere such as argon gas,
It is necessary to prevent oxidation. At this time, it is desirable to use a transparent container made of quartz or the like that can withstand high temperatures without hindering the generation efficiency of far infrared rays.
【００１１】[0011]
【実施例】以下に、実施例によって本発明を更に具体的
に説明するが、本願発明はこの実施例によって何等限定
されるものではない。 （実施例１）モンモリロナイト５０重量％に天然黒鉛微
粉末（日本黒鉛製 平均粒径５μｍ）１０重量％を複合
した組成物、窒化硼素（信越化学工業製 平均粒径２μ
ｍ）４０重量％に、水１００重量％を添加して、ヘンシ
ェルミキサーを用いて分散した後、表面温度を１２０℃
に保ったミキシング用二本ロールを用いて十分に混練を
繰り返して組成物を得、ペレタイザーによってペレット
化し、成形用組成物を得た。このペレットをブランジャ
ー型押出機で直径３mmφのダイスを用い脱気を行いつつ
１３０℃で３ｍ／秒の速度で押し出し、次に、これを窒
素ガス雰囲気中で１１００℃で焼成し、円柱状の炭素系
発熱体を得た。EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. (Example 1) A composition in which 50% by weight of montmorillonite and 10% by weight of natural graphite fine powder (average particle size: 5 μm, manufactured by Nippon Graphite) were combined, and boron nitride (average particle size: 2μ, manufactured by Shin-Etsu Chemical Co., Ltd.)
m) After adding 100% by weight of water to 40% by weight and dispersing using a Henschel mixer, the surface temperature was set to 120 ° C.
The composition was obtained by sufficiently kneading the mixture using two rolls for mixing kept at the same temperature, and pelletized by a pelletizer to obtain a molding composition. The pellets were extruded at a speed of 3 m / sec at 130 ° C. while degassing using a die having a diameter of 3 mm with a plunger type extruder. Then, the pellets were fired at 1100 ° C. in a nitrogen gas atmosphere to obtain a cylindrical shape. A carbon heating element was obtained.
【００１２】得られた炭素系発熱体は断面の直径２．５
mmφ、曲げ強度が１００MPa であった。ホイートストー
ンブリッジ法により、固有抵抗を測定したところ、７．
９×１０-3Ω・cmの値を有していた。この炭素系発熱体
を長さ３００mmに切断し、端部にリードを接続し、アル
ゴンガス雰囲気の石英管中で通電したところ１００Ｖで
瞬時６００℃に達するとともに、遠赤外線の放射が確認
できた。また使用中にクラックの発生もなく安定した発
熱量を得ることができた。The obtained carbon-based heating element has a sectional diameter of 2.5.
mmφ, and the bending strength was 100 MPa. The specific resistance was measured by the Wheatstone bridge method.
It had a value of 9 × 10 −3 Ω · cm. This carbon-based heating element was cut into a length of 300 mm, and a lead was connected to the end. When electricity was supplied in a quartz tube in an argon gas atmosphere, the temperature instantaneously reached 600 ° C. at 100 V, and emission of far infrared rays was confirmed. In addition, a stable calorific value could be obtained without generation of cracks during use.
【００１３】（実施例２）カオリナイト５０重量％に天
然黒鉛微粉末（日本黒鉛製 平均粒径５μｍ）１０重量
％を複合した組成物、窒化硼素（信越化学工業製 平均
粒径２μｍ）４０重量％に、水１００重量％を添加し
て、分散、混練後、押し出し成形し、次に、これを窒素
ガス雰囲気中で１１００℃で焼成し、円柱状の炭素系発
熱体を得た。(Example 2) A composition in which 50% by weight of kaolinite is combined with 10% by weight of natural graphite fine powder (Nippon Graphite, average particle size: 5 μm), 40% by weight of boron nitride (Shin-Etsu Chemical, average particle size: 2 μm) %, 100% by weight of water was added, dispersed, kneaded, extruded, and then fired at 1100 ° C. in a nitrogen gas atmosphere to obtain a columnar carbon-based heating element.
【００１４】得られた炭素系発熱体は断面の直径２．６
mmφ、曲げ強度が１２０MPa であった。ホイートストー
ンブリッジ法で固有抵抗を測定したところ、９．１×１
０-3Ω・cmの値を有していた。この炭素系発熱体を長さ
３００mmに切断し、端部にリードを接続し、アルゴンガ
ス雰囲気の石英管中で通電したところ１００Ｖで瞬時６
５０℃に達するとともに、遠赤外線の放射が確認でき
た。また使用中にクラックの発生もなく安定した発熱量
を得ることができた。The resulting carbon-based heating element has a cross-sectional diameter of 2.6.
mmφ and the bending strength were 120 MPa. When the specific resistance was measured by the Wheatstone bridge method, 9.1 × 1
It had a value of 0 −3 Ω · cm. This carbon-based heating element was cut into a length of 300 mm, and a lead was connected to the end.
When the temperature reached 50 ° C., emission of far infrared rays was confirmed. In addition, a stable calorific value could be obtained without generation of cracks during use.
【００１５】[0015]
【発明の効果】以上説明したように、本発明によれば、
金属系発熱体に比べ、発熱速度、発熱効率、遠赤外線の
発生効率が良いなど炭素系発熱体の有する優れた特性を
持つうえ、従来の炭素材に比べ任意の微細形状・抵抗を
具備することができるので、広範な設定電流・電位の印
加が可能なうえ再現性がよく信頼性が高い極めて優れた
炭素系発熱体を安価に得ることができる。As described above, according to the present invention,
It has excellent characteristics such as heat generation rate, heat generation efficiency and far-infrared ray generation efficiency compared to metal-based heating elements, and it also has arbitrary fine shape and resistance compared to conventional carbon materials. Therefore, it is possible to apply a wide range of set currents and potentials and to obtain an extremely excellent carbon-based heating element having high reproducibility and high reliability at low cost.
Claims (5)
合材を混合し、焼成して得られる炭素系発熱体。1. A carbon-based heating element obtained by mixing carbon powder with one or more inorganic binders and firing the mixture.
さらに混合される請求項１記載の炭素系発熱体。2. The carbon-based heating element according to claim 1, wherein one or more kinds of extenders are further mixed before firing.
ク、窒化硼素、シリカ、アルミナ、炭酸カルシウム、二
硫化モリブテンまたは二硫化タングステンである請求項
２記載の炭素系発熱体。3. The carbon-based heating element according to claim 2, wherein the body material is titanium oxide, mica, talc, boron nitride, silica, alumina, calcium carbonate, molybdenum disulfide or tungsten disulfide.
リサイト系、モンモリロナイト系、ベントナイト系の粘
土類、ゼオライト、ケイソウ土、活性白土、シリカ、リ
ン酸アルミニウム、シリコーン樹脂またはシリコーンゴ
ムである請求項１〜３のいずれか１項記載の炭素系発熱
体。4. The inorganic binder is a kaolinite-based, sericite-based, montmorillonite-based, bentonite-based clay, zeolite, diatomaceous earth, activated clay, silica, aluminum phosphate, silicone resin or silicone rubber. Item 4. The carbon-based heating element according to any one of Items 1 to 3.
鉛またはコークス粉である請求項１〜４のいずれか１項
記載の炭素系発熱体。5. The carbon heating element according to claim 1, wherein the carbon powder is carbon black, graphite or coke powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28004598A JPH11242985A (en) | 1997-12-26 | 1998-10-01 | Carbonic heating element |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9-361237 | 1997-12-26 | ||
| JP36123797 | 1997-12-26 | ||
| JP28004598A JPH11242985A (en) | 1997-12-26 | 1998-10-01 | Carbonic heating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11242985A true JPH11242985A (en) | 1999-09-07 |
Family
ID=26553599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28004598A Withdrawn JPH11242985A (en) | 1997-12-26 | 1998-10-01 | Carbonic heating element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11242985A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6501056B1 (en) | 1998-04-28 | 2002-12-31 | E. Tec Corporation | Carbon heating element and method of manufacturing the same |
| KR100438329B1 (en) * | 2002-02-20 | 2004-07-01 | 전성욱 | artificial bar generating heat |
| KR20050020469A (en) * | 2003-08-19 | 2005-03-04 | 이건국 | A heating apparatus of low temperature |
| KR100804257B1 (en) | 2006-07-10 | 2008-02-18 | (주)유티앤케미칼 | Heating element composition and apparatus for heating food the same |
| JP2013001614A (en) * | 2011-06-17 | 2013-01-07 | Neive:Kk | Porous heating element |
| CN108147777A (en) * | 2017-12-22 | 2018-06-12 | 郑州中南杰特超硬材料有限公司 | It is a kind of to be pressed into method with heating tube using recycling synthesizing cubic boron nitride solid waste and prepare superelevation |
-
1998
- 1998-10-01 JP JP28004598A patent/JPH11242985A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6501056B1 (en) | 1998-04-28 | 2002-12-31 | E. Tec Corporation | Carbon heating element and method of manufacturing the same |
| KR100438329B1 (en) * | 2002-02-20 | 2004-07-01 | 전성욱 | artificial bar generating heat |
| KR20050020469A (en) * | 2003-08-19 | 2005-03-04 | 이건국 | A heating apparatus of low temperature |
| KR100804257B1 (en) | 2006-07-10 | 2008-02-18 | (주)유티앤케미칼 | Heating element composition and apparatus for heating food the same |
| JP2013001614A (en) * | 2011-06-17 | 2013-01-07 | Neive:Kk | Porous heating element |
| CN108147777A (en) * | 2017-12-22 | 2018-06-12 | 郑州中南杰特超硬材料有限公司 | It is a kind of to be pressed into method with heating tube using recycling synthesizing cubic boron nitride solid waste and prepare superelevation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20060110 |