JP2701193B2 - Ceramic fiber heater - Google Patents
Ceramic fiber heaterInfo
- Publication number
- JP2701193B2 JP2701193B2 JP5297558A JP29755893A JP2701193B2 JP 2701193 B2 JP2701193 B2 JP 2701193B2 JP 5297558 A JP5297558 A JP 5297558A JP 29755893 A JP29755893 A JP 29755893A JP 2701193 B2 JP2701193 B2 JP 2701193B2
- Authority
- JP
- Japan
- Prior art keywords
- ceramic fiber
- fiber heater
- meandering
- curved
- present
- 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.)
- Expired - Fee Related
Links
Landscapes
- Surface Heating Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、セラミックファイバー
ヒーター、特に蛇行状エレメントを有するセラミックフ
ァイバーヒーターに関するものである。BACKGROUND OF THE INVENTION The present invention relates to ceramic fiber heaters, and more particularly to ceramic fiber heaters having meandering elements.
【０００２】[0002]
【従来の技術】例えば、米国特許第４，５７５，６１９
号明細書には蛇行状エレメントを有するセラミックファ
イバーヒーターが示されている。2. Description of the Related Art For example, US Pat. No. 4,575,619.
The document discloses a ceramic fiber heater having meandering elements.
【０００３】図３はこのような蛇行状エレメントの平面
図を示し、１は発熱線、２は１８０°に亘る折り曲げ湾
曲部、３は上記折り曲げ湾曲部２，２間を結ぶエレメン
ト部分である。FIG. 3 is a plan view of such a meandering element. Reference numeral 1 denotes a heating wire, 2 denotes a bent portion extending over 180 °, and 3 denotes an element portion connecting the bent portions 2.
【０００４】[0004]
【発明が解決しようとする課題】上記従来の蛇行状エレ
メントを有するセラミックファイバーヒーターにおいて
は、発熱線１をセラミックファイバー（図示せず）の表
面上に載置し、その折り曲げ湾曲部２を介して逆方向に
幾度も曲げられ、セラミックファイバーへ固定するため
上記湾曲部２をセラミックファイバー内に埋め込んで固
定しており、また、上記エレメント部分３は直線状とな
っている。従って発熱線１を８００°〜１２００℃の高
温で長時間使用した場合には線膨張による発熱線１の伸
びが、その両端の固定されている湾曲部２に直線状に加
えられ、蛇行状エレメントのエレメント部分３が上記伸
びに対応するため図４に示すように不規則に湾曲変形し
てしまい、場合によって互いに接近する方向に変形して
部分的ショートを生ずるようになるおそれがあった。In the above-mentioned conventional ceramic fiber heater having a meandering element, a heating wire 1 is placed on the surface of a ceramic fiber (not shown) and is bent via a bent portion 2 of the ceramic fiber. The bending portion 2 is bent several times in the opposite direction and fixed to the ceramic fiber by embedding the curved portion 2 in the ceramic fiber, and the element portion 3 is linear. Therefore, when the heating wire 1 is used at a high temperature of 800 ° C. to 1200 ° C. for a long time, the expansion of the heating wire 1 due to linear expansion is linearly applied to the curved portions 2 fixed at both ends thereof, and the meandering element is formed. In order to cope with the above-mentioned elongation, the element portion 3 irregularly bends and deforms as shown in FIG. 4, and in some cases, it may deform in a direction approaching each other to cause a partial short circuit.
【０００５】本発明は上記の欠点を除くようにしたもの
である。The present invention has been made to eliminate the above disadvantages.
【０００６】[0006]
【課題を解決するための手段】本発明者は種々実験、研
究の結果、上記エレメント部分３をあらかじめ一定方向
に弧状に湾曲せしめておけば、線膨張により発熱線１が
伸びた場合その伸びが上記弧状の湾曲の曲率を高める形
で吸収され、その結果、不規則な変形は生じないように
なることが判明した。As a result of various experiments and studies, the present inventor has found that if the element portion 3 is curved in an arc in a predetermined direction in advance, the expansion of the heating wire 1 due to linear expansion will be reduced. It has been found that the above-mentioned arc-shaped curvature is absorbed in such a manner as to increase the curvature, so that irregular deformation does not occur.
【０００７】本発明はかかる知見に基づいてなされたも
のである。The present invention has been made based on such findings.
【０００８】本発明のセラミックファイバーヒーター
は、１８０゜に亘る折り曲げ湾曲部と、互いに並行して
延びる部分とにより形成した蛇行状発熱エレメントより
成り、上記並行して延びる部分がこの部分を含む面内で
互いに同一の方向に略同一の弧状に湾曲することを特徴
とする。[0008] The ceramic fiber heater of the present invention has a bent and curved portion extending over 180 ° and parallel to each other.
From the meandering heating element formed by the extending part
And the part extending in parallel above in the plane including this part
Characterized by curved substantially the same arc in the same direction.
【０００９】[0009]
【実施例】以下図面によって本発明の実施例を説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【００１０】本発明においては図１に示すように、蛇行
状エレメントの１８０°に亘る折り曲げ湾曲部２と２を
結ぶエレメント部分３をあらかじめ一定方向に弧状に湾
曲せしめておく。In the present invention, as shown in FIG. 1, the element portion 3 connecting the bent portions 2 of the meandering element over 180 ° is previously curved in a predetermined direction in an arc shape.
【００１１】本発明のセラミックファイバーヒーターは
上記のような構成であるから、発熱線１に伸びが生じた
場合、この伸びによる変形が図２に示すようにあらかじ
め弧状に湾曲されている形を大きくする形で生じ、また
総てのエレメント部分３の変形が同一の向きに相似形状
に発生するため、エレメント部分３相互間の距離が縮小
されることは少なく、従ってショートを生ずるおそれが
ないようになる。Since the ceramic fiber heater of the present invention has the above-described configuration, when the heating wire 1 is elongated, the deformation due to the extension is largely changed to a shape which is previously curved in an arc as shown in FIG. And the deformation of all the element parts 3 occurs in the same direction and in a similar shape, so that the distance between the element parts 3 is rarely reduced, so that there is no possibility of causing a short circuit. Become.
【００１２】[0012]
【発明の効果】上記のように本発明のセラミックファイ
バーヒーターによれば、高温で長期間使用してもショー
ト等の問題が生ぜず、従ってサービスライフの長いセラ
ミックファイバーヒーターを得ることができる大きな利
益がある。As described above, according to the ceramic fiber heater of the present invention, even if the ceramic fiber heater is used at a high temperature for a long time, there is no problem such as a short circuit, and therefore, a ceramic fiber heater having a long service life can be obtained. There is.
【図１】本発明のセラミックファイバーヒーターにおけ
る蛇行状エレメントの平面図である。FIG. 1 is a plan view of a meandering element in a ceramic fiber heater of the present invention.
【図２】長期間高温で使用した場合の図１に示す蛇行状
エレメントの平面図である。FIG. 2 is a plan view of the meandering element shown in FIG. 1 when used at a high temperature for a long time.
【図３】従来のセラミックファイバーヒーターにおける
蛇行状エレメントの平面図である。FIG. 3 is a plan view of a meandering element in a conventional ceramic fiber heater.
【図４】長期間高温で使用した場合の図３に示す蛇行状
エレメントの平面図である。FIG. 4 is a plan view of the meandering element shown in FIG. 3 when used at a high temperature for a long time.
１ 発熱線 ２ 湾曲部 ３ エレメント部分 DESCRIPTION OF SYMBOLS 1 Heating wire 2 Curved part 3 Element part
Claims (1)
に並行して延びる部分とにより形成した蛇行状発熱エレ
メントより成り、上記並行して延びる部分がこの部分を
含む面内で互いに同一の方向に略同一の弧状に湾曲する
ことを特徴とするセラミックファイバーヒーター。1. A 180 ° folding bend and
Meandering heating element formed by a portion extending in parallel with
And the part extending in parallel with this part
A ceramic fiber heater characterized by being curved in substantially the same arc in the same direction in the plane including the ceramic fiber heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5297558A JP2701193B2 (en) | 1993-11-04 | 1993-11-04 | Ceramic fiber heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5297558A JP2701193B2 (en) | 1993-11-04 | 1993-11-04 | Ceramic fiber heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07130458A JPH07130458A (en) | 1995-05-19 |
| JP2701193B2 true JP2701193B2 (en) | 1998-01-21 |
Family
ID=17848108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5297558A Expired - Fee Related JP2701193B2 (en) | 1993-11-04 | 1993-11-04 | Ceramic fiber heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2701193B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4750147B2 (en) * | 2008-04-04 | 2011-08-17 | 株式会社アルファ・オイコス | High temperature furnace |
| JP2009252505A (en) * | 2008-04-04 | 2009-10-29 | Alpha Oikos:Kk | Heater element for ceramic fiber heater and its manufacturing method |
| JP4769842B2 (en) * | 2008-04-08 | 2011-09-07 | 株式会社アルファ・オイコス | High temperature furnace |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5157121A (en) * | 1974-11-13 | 1976-05-19 | Matsushita Electric Ind Co Ltd | SUICHOKUHENKOKAIRO |
| JPH01227386A (en) * | 1988-03-07 | 1989-09-11 | Tamura R & D:Kk | Electric heater provided with coil-type electric heating wire |
-
1993
- 1993-11-04 JP JP5297558A patent/JP2701193B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07130458A (en) | 1995-05-19 |
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