JP3453658B2 - heating furnace - Google Patents
heating furnaceInfo
- Publication number
- JP3453658B2 JP3453658B2 JP2001178293A JP2001178293A JP3453658B2 JP 3453658 B2 JP3453658 B2 JP 3453658B2 JP 2001178293 A JP2001178293 A JP 2001178293A JP 2001178293 A JP2001178293 A JP 2001178293A JP 3453658 B2 JP3453658 B2 JP 3453658B2
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- insulating material
- heat insulating
- furnace
- shaped
- 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
Description
【０００１】[0001]
【発明の属する技術分野】本発明は加熱炉、特に、帯状
発熱体を断熱材によって保持した加熱炉に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating furnace, and more particularly to a heating furnace in which a belt-shaped heating element is held by a heat insulating material.
【０００２】[0002]
【従来の技術】従来、加熱炉としては、炉内全面を発熱
体となし、その外面全面を断熱材で囲うのが良く、この
ようにすれば発熱体の温度と炉内との温度差を少なくし
て、発熱体の温度をより低い温度とし、炉の寿命を伸ば
すことができるが、炉内の均熱特性を良くする為に、炉
端近傍の温度を炉の内部より高めに設定したり、発熱体
の電気抵抗値を大きくして通電電流を引き下げ、商用電
源をそのまま使用する事が出来るように、帯状の発熱体
をそのまま炉内壁面に適宜配置するか、帯状の発熱体
に、適宜スリットを設けて同じく炉内壁面に適宜配置し
ている。2. Description of the Related Art Conventionally, as a heating furnace, it is preferable that the entire surface of the inside of the furnace is used as a heating element and the entire outer surface thereof is surrounded by a heat insulating material so that the temperature difference between the heating element and the inside of the heating element can be reduced. The temperature of the heating element can be reduced to a lower temperature to extend the life of the furnace, but in order to improve the soaking characteristics in the furnace, the temperature near the furnace edge can be set higher than that in the furnace. To increase the electric resistance value of the heating element to reduce the energizing current so that the commercial power source can be used as it is, the belt-shaped heating element is appropriately arranged as it is on the inner wall surface of the furnace, or the belt-shaped heating element is appropriately changed. A slit is provided and similarly arranged on the inner wall surface of the furnace.
【０００３】上記の発熱体を炉内壁に固定する為に従来
採用されて来た方法では、発熱体の外面に配置したファ
イバー状の断熱材に、発熱体を保持する為の、例えば、
アルミナ製の耐熱絶縁材の保持材の一部を埋め込み、炉
内面に飛び出させた残りの部分にて発熱体を保持する
か、発熱体を波状に曲げ加工し、断熱材側に突出する部
分の一部をファイバー状の断熱材のうち、表面部分の固
形化した部分にて保持している。In the method conventionally used for fixing the heating element to the inner wall of the furnace, a fibrous heat insulating material disposed on the outer surface of the heating element is used to hold the heating element.
A part of the holding material of the heat-resistant insulating material made of alumina is embedded, and the heating element is held by the remaining part that is projected to the inner surface of the furnace, or the heating element is bent in a wavy shape and the part protruding to the heat insulating material side A part of the fibrous heat insulating material is held by the solidified surface portion.
【０００４】図３及び図４はこの前者の説明図であっ
て、１はファイバー状断熱材、２は平らな帯状発熱体、
３はこの発熱体１を上下から挟む溝を夫々有する、例え
ば、アルミナ製の耐熱絶縁材の上下の保持材、４は上記
ファイバー状断熱材１に埋め込み固定される上記上下の
保持材３の基部、５は上下の保持材３の基部４を互いに
結合するために形成した鳩尾状凹部及び突部を示す。3 and 4 are explanatory views of the former, in which 1 is a fiber-shaped heat insulating material, 2 is a flat strip-shaped heating element,
Reference numeral 3 denotes a holding member for holding the heating element 1 from above and below, for example, upper and lower holding members of a heat-resistant insulating material made of alumina, and 4 denotes a base portion of the upper and lower holding members 3 embedded and fixed in the fibrous heat insulating material 1. Reference numeral 5 denotes a dovetail-shaped recess and a projection formed to connect the bases 4 of the upper and lower holding members 3 to each other.
【０００５】図５及び図６は後者の場合の説明図であっ
て、６はファイバー状断熱材１の表面固形化部分、７は
波状に湾曲した帯状発熱体、８は上記断熱材１の表面固
形化部分６に埋設された帯状発熱体部分を示す。FIGS. 5 and 6 are explanatory views of the latter case, in which 6 is a solidified portion of the surface of the fiber-shaped heat insulating material 1, 7 is a band-shaped heating element curved in a wave shape, and 8 is the surface of the heat insulating material 1. The band-shaped heating element portion embedded in the solidified portion 6 is shown.
【０００６】[0006]
【発明が解決しようとする課題】然しながら、前者の場
合、耐熱絶縁材による保持材の生産価格が高く、又、発
熱体の配置を変更したい場合には、保持材の形状を変え
る必要があり、金型の変更や、生産に要する日時が長
く、短納期での対応は困難であった。又、後者の場合、
発熱体の素材の硬度がロット毎に異なる為、波型形状の
管理が困難で、深い曲げの場合と、浅い曲げの場合で
は、発熱体の単位長当たりの電気抵抗の値にばらつきを
生じ、又、隣接する発熱体方向に対する変位は少なくて
も、発熱体面の炉の中心方向に対しては保持力が殆んど
無いため、炉内の温度が変化する使い方では、発熱線の
熱膨張・収縮に伴う形状変化により、炉内部への一部分
の飛び出しが大きくなり、使用できなくなるという欠点
を有していた。However, in the former case, the production cost of the holding material made of the heat-resistant insulating material is high, and in order to change the arrangement of the heating elements, it is necessary to change the shape of the holding material. It took a long time to change the mold and production, and it was difficult to respond in a short delivery time. In the latter case,
Since the hardness of the heating element material varies from lot to lot, it is difficult to control the corrugated shape, and the electric resistance value per unit length of the heating element varies between deep bending and shallow bending, In addition, even if there is little displacement in the direction of the adjacent heating element, there is almost no holding force in the direction of the center of the furnace on the surface of the heating element. Due to the change in shape due to the contraction, the protrusion of a part inside the furnace becomes large and there is a drawback that it cannot be used.
【０００７】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.
【０００８】[0008]
【課題を解決するための手段】本発明の加熱炉は、断熱
材と、この断熱材の炉面側に配置した平らな帯状発熱体
と、この帯状発熱体の断熱材側の面にその長さ方向に離
間して設けた複数のフックとより成り、このフックが帯
状発熱体から外方に離れるように延びる部分とこれに直
交する部分とを有し、この部分が上記断熱材表面に埋設
されていることを特徴とする。The heating furnace of the present invention comprises a heat insulating material, a flat band-shaped heating element arranged on the furnace surface side of the heat insulating material, and a long length on the heat insulating material side surface of the band heating element. A plurality of hooks spaced apart in the vertical direction, the hook having a portion extending outward from the band-shaped heating element and a portion orthogonal to the portion, and this portion being embedded in the surface of the heat insulating material. It is characterized by being.
【０００９】上記フックは、断面コ字状に折り曲げられ
た板材であることを特徴とする。The hook is a plate member bent in a U-shaped cross section.
【００１０】[0010]
【発明の実施の形態】以下図面によって本発明の実施例
を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings.
【００１１】本発明においては、図１及び図２に示すよ
うに平らな帯状発熱体２のファイバー状断熱材１側に、
その長さ方向に離間して複数のフック９を溶接等により
取り付け、このフック９を、例えば、真空成形により上
記ファイバー状断熱材１の表面部分に埋設せしめる。な
お、上記フック９には、例えば、L字状のように帯状加
熱体２から外方に離れるように延びる部分９ａと、これ
から直交する方向に折れ曲がる部分９ｂとを有せしめ
る。In the present invention, as shown in FIGS. 1 and 2, a flat band-shaped heating element 2 is provided on the side of the fiber-shaped heat insulating material 1,
A plurality of hooks 9 are attached to each other in the lengthwise direction by welding or the like, and the hooks 9 are embedded in the surface portion of the fibrous heat insulating material 1 by, for example, vacuum forming. The hook 9 is provided with, for example, a portion 9a extending outwardly from the band-shaped heating body 2 like an L shape, and a portion 9b bent in a direction orthogonal to the portion 9a.
【００１２】本発明の加熱炉は上記のような構成である
から帯状加熱体２は断熱材１に対し上下方向及び水平方
向に確実に保持され、発熱体の熱膨張・収縮に伴う形状
変化により、炉内部への一部分の飛び出し等を確実に阻
止できるようになる。Since the heating furnace of the present invention is constructed as described above, the belt-shaped heating element 2 is securely held in the vertical and horizontal directions with respect to the heat insulating material 1, and the shape change due to the thermal expansion and contraction of the heating element is caused. Therefore, it is possible to reliably prevent a part of the furnace from jumping out.
【００１３】発熱体２に取り付けたフック９により、
又、発熱体２の配置の変更もファイバー状断熱材１への
埋設固定時の位置を変えるだけでよく、耐熱絶縁材も使
用しないので、極めて短納期であり、製品原価の１／２
〜１／４を占める耐熱絶縁材の代わりに、単価が耐熱絶
縁材の１／１０以下のフックを使用するので、製造原価
が大きく低減出来る事となる。By the hook 9 attached to the heating element 2,
Further, the arrangement of the heating element 2 can be changed only by changing the position when the heating element 2 is embedded and fixed in the fibrous heat insulating material 1, and since no heat resistant insulating material is used, the delivery time is extremely short and the product cost is 1/2.
Since the hook whose unit price is 1/10 or less of the heat-resistant insulating material is used instead of the heat-resistant insulating material which occupies ˜1 / 4, the manufacturing cost can be greatly reduced.
【００１４】[0014]
【発明の効果】上記のように本発明の加熱炉によれば極
めて簡単な構成によって発熱体を確実に断熱材に固定せ
しめることができ、その配置変更も容易である等大きな
利益がある。As described above, according to the heating furnace of the present invention, the heating element can be securely fixed to the heat insulating material with an extremely simple structure, and the arrangement can be easily changed, which is a great advantage.
【図１】本発明の加熱炉の発熱体部分の正面図である。FIG. 1 is a front view of a heating element portion of a heating furnace of the present invention.
【図２】図１に示す加熱炉の発熱体部分の縦断側面図で
ある。FIG. 2 is a vertical sectional side view of a heating element portion of the heating furnace shown in FIG.
【図３】従来の加熱炉の発熱体部分の正面図である。FIG. 3 is a front view of a heating element portion of a conventional heating furnace.
【図４】図３に示す加熱炉の発熱体部分の縦断側面図で
ある。FIG. 4 is a vertical sectional side view of a heating element portion of the heating furnace shown in FIG.
【図５】従来の加熱炉の発熱体部分の正面図である。FIG. 5 is a front view of a heating element portion of a conventional heating furnace.
【図６】図５に示す加熱炉の発熱体部分の底面図であ
る。6 is a bottom view of a heating element portion of the heating furnace shown in FIG.
１ ファイバー状断熱材 ２ 帯状発熱体 ３ 保持材 ４ 基部 ５ 鳩尾状凹部及び突部 ６ 表面固形化部分 ７ 湾曲した帯状発熱体 ８ 埋設された帯状発熱体部分 ９ フック ９ａ 延びる部分 ９ｂ 折れ曲がる部分 1 Fiber insulation 2 band heating element 3 holding material 4 base 5 Dovetail recess and protrusion 6 Surface solidification part 7 Curved strip heating element 8 Embedded strip heating element 9 hooks 9a extended portion 9b Bent part
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F27D 11/02 H05B 3/64 H05B 3/66 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) F27D 11/02 H05B 3/64 H05B 3/66
Claims (2)
た平らな帯状発熱体と、この帯状発熱体の断熱材側の面
にその長さ方向に離間して設けた複数のフックとより成
り、このフックが帯状発熱体から外方に離れるように延
びる部分とこれに直交する部分とを有し、この部分が上
記断熱材表面に埋設されていることを特徴とする加熱
炉。1. A heat insulating material, a flat band-shaped heating element arranged on the furnace surface side of the heat insulating material, and a plurality of hooks provided on the heat insulating material side surface of the band-shaped heating element spaced apart in the lengthwise direction. A heating furnace, characterized in that the hook has a portion extending outward from the strip-shaped heating element and a portion orthogonal to the portion, and this portion is embedded in the surface of the heat insulating material.
た板材であることを特徴とする請求項１記載の加熱炉。2. The heating furnace according to claim 1, wherein the hook is a plate material bent in a U-shaped cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001178293A JP3453658B2 (en) | 2001-06-13 | 2001-06-13 | heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001178293A JP3453658B2 (en) | 2001-06-13 | 2001-06-13 | heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002372380A JP2002372380A (en) | 2002-12-26 |
| JP3453658B2 true JP3453658B2 (en) | 2003-10-06 |
Family
ID=19019016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001178293A Expired - Fee Related JP3453658B2 (en) | 2001-06-13 | 2001-06-13 | heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3453658B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6619127B2 (en) * | 2013-10-30 | 2019-12-11 | サンドビック株式会社 | Heating device and furnace |
-
2001
- 2001-06-13 JP JP2001178293A patent/JP3453658B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002372380A (en) | 2002-12-26 |
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