JP2005241135A - Electric furnace - Google Patents

Electric furnace Download PDF

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Publication number
JP2005241135A
JP2005241135A JP2004051729A JP2004051729A JP2005241135A JP 2005241135 A JP2005241135 A JP 2005241135A JP 2004051729 A JP2004051729 A JP 2004051729A JP 2004051729 A JP2004051729 A JP 2004051729A JP 2005241135 A JP2005241135 A JP 2005241135A
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Japan
Prior art keywords
heating element
furnace wall
groove
furnace
electric
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JP2004051729A
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JP4208246B2 (en
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Toru Watanabe
徹 渡辺
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Sakaguchi Dennetsu KK
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Sakaguchi Dennetsu KK
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Abstract

<P>PROBLEM TO BE SOLVED: To eliminate a weak point that thermal efficiency is low as a heating element is partially buried in a furnace wall to fix the heating element on the furnace wall in an electric furnace. <P>SOLUTION: In this electric furnace composed of the furnace wall and the heating element mounted on an inner face of the furnace wall, a groove 2 is formed on the inner face of the furnace wall, the hating element has the wave shape having an amplitude smaller than a width of the groove, a heat element supporting pin is fixed to a high wave part 5 of the heating element 3, and the heating element supporting pin 7 is buried in a side wall of the groove. As the whole surface of the electric resistance heating element 3 can be exposed to the outside of a heat insulating material, the thermal efficiency can be improved, and the overheating of the electric-resistance heating element can be reduced, which elongates its service life. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は電気炉、特に熱効率のよい電気炉に関するものである。   The present invention relates to an electric furnace, and more particularly to an electric furnace with high thermal efficiency.

図３は従来の電気炉の炉壁の一部を示し、１はセラミックファイバー等よりなる断熱炉壁、２は上記断熱炉壁１の内面に一定間隔互いに離間して設けた複数の溝、３は上記溝２の幅より大きい振幅の波形に形成した電気抵抗発熱体であり、上記電気抵抗発熱体３を上記溝２の底４から一定の距離離間した位置で、上記電気抵抗発熱体３の波高部５を上記溝２の両側壁６，６に埋め込み上記炉壁１に固定せしめている。   FIG. 3 shows a part of a furnace wall of a conventional electric furnace, wherein 1 is a heat insulating furnace wall made of ceramic fiber or the like, 2 is a plurality of grooves provided on the inner surface of the heat insulating furnace wall 1 at regular intervals, 3 Is an electric resistance heating element formed in a waveform having an amplitude larger than the width of the groove 2, and the electric resistance heating element 3 is positioned at a certain distance from the bottom 4 of the groove 2. The wave height portion 5 is embedded in the side walls 6 and 6 of the groove 2 and fixed to the furnace wall 1.

上記従来の電気炉においては、上記電気抵抗発熱体３を上記溝２の底４から一定の距離離間して上記断熱炉壁１の溝２内に固定したので、溝２の底４に電気抵抗発熱体を配置して固定したものに比べて、電気抵抗発熱体３の露出表面を多くとることができ、加熱効率を良くすることができ、また、抵抗発熱体の過熱を少なくして長寿命とすることができる。   In the conventional electric furnace, the electric resistance heating element 3 is fixed in the groove 2 of the heat insulating furnace wall 1 at a certain distance from the bottom 4 of the groove 2. Compared to the case where the heating element is arranged and fixed, the exposed surface of the electrical resistance heating element 3 can be increased, the heating efficiency can be improved, and the resistance heating element is overheated for a longer life. It can be.

このような電気炉としては、特許文献１に示すようなものがある。
特開平１０−１２３６１号公報（図１） An example of such an electric furnace is shown in Patent Document 1.
Japanese Patent Laid-Open No. 10-12361 (FIG. 1)

然しながら、上記従来の電気炉においてもなお放熱ロスを少なくするには不十分であった。   However, the conventional electric furnace is still insufficient to reduce the heat dissipation loss.

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 eliminates the above-mentioned drawbacks.

本発明の電気炉は、炉壁と、上記炉壁内面に配置した発熱体とよりなる電気炉において、上記炉壁内面に溝を設け、上記発熱体を上記溝の幅より小さい振幅の波形とし上記溝内に配置し、上記発熱体の波高部に発熱体支持ピンを固定し、上記溝の側壁に上記発熱体支持ピンを埋め込んだことを特徴とする。   The electric furnace according to the present invention is an electric furnace comprising a furnace wall and a heating element disposed on the inner surface of the furnace wall. The heating element support pin is disposed in the groove, fixed to the wave height portion of the heating element, and the heating element support pin is embedded in the side wall of the groove.

本発明の電気炉によれば、電気抵抗発熱体の表面全体を断熱材の外に露出せしめることができるので熱効率を高めることができ、また、電気抵抗発熱体の過熱を少なくして長寿命とすることができるという大きな利益がある。   According to the electric furnace of the present invention, the entire surface of the electric resistance heating element can be exposed to the outside of the heat insulating material, so that the thermal efficiency can be increased, and the overheating of the electric resistance heating element can be reduced to increase the life. There is a big benefit that you can do.

また、電気抵抗発熱体は後付で支持ピンで固定することができるので、安価、簡便、確実に電気抵抗発熱体を炉壁に固定することができる。   In addition, since the electric resistance heating element can be fixed later with a support pin, the electric resistance heating element can be fixed to the furnace wall at low cost, simply and reliably.

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.

本発明の電気炉においては、図１及び図２に示すように、断熱炉壁１の内面に一定間隔互いに離間して設けた複数の溝２の幅より小さい振幅のジグザグ状や波状に上下に連続して折り曲げた波形の電気抵抗発熱体３を用い、上記電気抵抗発熱体３の各波高部５に夫々外方に突出した耐熱性の支持ピン７をスタッド溶接し、上記支持ピン７を上記溝２の両側壁６，６に埋め込み上記電気抵抗発熱体３を上記溝２内で上記溝２の底４から一定の距離離間した位置で上記炉壁１に固定せしめる。   In the electric furnace of the present invention, as shown in FIG. 1 and FIG. 2, the zigzag shape and the wave shape having an amplitude smaller than the width of the plurality of grooves 2 provided on the inner surface of the heat insulation furnace wall 1 at a predetermined interval are vertically moved up and down. Using the electric resistance heating element 3 having a continuously bent waveform, the heat-resistant support pins 7 protruding outward are stud-welded to the wave height portions 5 of the electric resistance heating element 3, and the support pins 7 are The electric resistance heating element 3 is embedded in both side walls 6 and 6 of the groove 2 and fixed to the furnace wall 1 at a position spaced apart from the bottom 4 of the groove 2 in the groove 2.

本発明の電気炉においては、電気抵抗発熱体３の表面全体を断熱材の外に露出せしめることができるので熱効率を高めることができ、また、電気抵抗発熱体の過熱を少なくすることができるので長寿命とすることができる。   In the electric furnace of the present invention, the entire surface of the electric resistance heating element 3 can be exposed to the outside of the heat insulating material, so that the thermal efficiency can be increased and the overheating of the electric resistance heating element can be reduced. Long life can be achieved.

また、電気抵抗発熱体３は後付で支持ピン７を固定すればよいので、安価、簡便、確実に電気抵抗発熱体３を炉壁１に固定することができる。   Further, since the electric resistance heating element 3 only needs to be fixed later, the electric resistance heating element 3 can be fixed to the furnace wall 1 at low cost, simply and reliably.

なお、上記電気抵抗発熱体３の断面形状は円形、楕円または四辺形でもよい。   Note that the cross-sectional shape of the electric resistance heating element 3 may be a circle, an ellipse, or a quadrilateral.

また、上記電気抵抗発熱体３の各波高部５に夫々上記支持ピン７を固定する以外に、上記電気抵抗発熱体３の炉壁に対向する面であればどこにでも上記支持ピン７を固定してもよく、また、溶接する支持ピンの数、位置を変えてもよい。   Further, in addition to fixing the support pin 7 to each wave height portion 5 of the electric resistance heating element 3, the support pin 7 is fixed anywhere on the surface of the electric resistance heating element 3 facing the furnace wall. Alternatively, the number and position of the support pins to be welded may be changed.

また、上記電気抵抗発熱体３を上記炉壁１に確実に固定するために、上記炉壁１内に埋め込む支持ピン７の形状を鍵型としてもよい。   Further, in order to securely fix the electric resistance heating element 3 to the furnace wall 1, the shape of the support pin 7 embedded in the furnace wall 1 may be a key shape.

本発明の電気炉の要部の斜視図である。It is a perspective view of the principal part of the electric furnace of this invention. 本発明の電気炉の拡大縦断側面図である。It is an expansion vertical side view of the electric furnace of this invention. 従来の電気炉の要部の斜視図である。It is a perspective view of the principal part of the conventional electric furnace.

符号の説明Explanation of symbols

１ 断熱炉壁
２ 溝
３ 電気抵抗発熱体
４ 底
５ 波高部
６ 両側壁
７ 支持ピン DESCRIPTION OF SYMBOLS 1 Heat insulation furnace wall 2 Groove 3 Electric resistance heating element 4 Bottom 5 Wave height part 6 Both side wall 7 Support pin

Claims (1)

炉壁と、上記炉壁内面に配置した発熱体とよりなる電気炉において、上記炉壁内面に溝を設け、上記発熱体を上記溝の幅より小さい振幅の波形とし上記溝内に配置し、上記発熱体の波高部に発熱体支持ピンを固定し、上記溝の側壁に上記発熱体支持ピンを埋め込んだことを特徴とする電気炉。   In an electric furnace comprising a furnace wall and a heating element disposed on the inner surface of the furnace wall, a groove is provided on the inner surface of the furnace wall, the heating element is disposed in the groove with a waveform having an amplitude smaller than the width of the groove, An electric furnace characterized in that a heating element support pin is fixed to a wave height portion of the heating element, and the heating element support pin is embedded in a side wall of the groove.
JP2004051729A 2004-02-26 2004-02-26 Electric furnace Expired - Fee Related JP4208246B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004051729A JP4208246B2 (en) 2004-02-26 2004-02-26 Electric furnace

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Application Number Priority Date Filing Date Title
JP2004051729A JP4208246B2 (en) 2004-02-26 2004-02-26 Electric furnace

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JP2005241135A true JP2005241135A (en) 2005-09-08
JP4208246B2 JP4208246B2 (en) 2009-01-14

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009180462A (en) * 2008-01-31 2009-08-13 Tokyo Electron Ltd Heat treat furnace
JP2009250506A (en) * 2008-04-04 2009-10-29 Alpha Oikos:Kk Heating furnace for high temperature
CN102607283A (en) * 2011-08-18 2012-07-25 西安奥杰电热设备工程有限责任公司 Five-element allocating heater for aerial resistance furnace
CN103217015A (en) * 2013-03-21 2013-07-24 扬中市金元化工电力设备厂 High-temperature resistance heating furnace device
CN104266493A (en) * 2014-10-11 2015-01-07 华能无锡电热器材有限公司 Radiant electric heater with isothermal heat exchange pipe
CN104619053A (en) * 2015-03-09 2015-05-13 苏州洛特兰新材料科技有限公司 Ceramic electric heater

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009180462A (en) * 2008-01-31 2009-08-13 Tokyo Electron Ltd Heat treat furnace
JP2009250506A (en) * 2008-04-04 2009-10-29 Alpha Oikos:Kk Heating furnace for high temperature
CN102607283A (en) * 2011-08-18 2012-07-25 西安奥杰电热设备工程有限责任公司 Five-element allocating heater for aerial resistance furnace
CN103217015A (en) * 2013-03-21 2013-07-24 扬中市金元化工电力设备厂 High-temperature resistance heating furnace device
CN104266493A (en) * 2014-10-11 2015-01-07 华能无锡电热器材有限公司 Radiant electric heater with isothermal heat exchange pipe
CN104266493B (en) * 2014-10-11 2016-05-18 华能无锡电热器材有限公司 Equitemperature heat exchanger tube radiation type electric heater
CN104619053A (en) * 2015-03-09 2015-05-13 苏州洛特兰新材料科技有限公司 Ceramic electric heater

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