JPH0612691B2 - Spiral heating element - Google Patents
Spiral heating elementInfo
- Publication number
- JPH0612691B2 JPH0612691B2 JP60026991A JP2699185A JPH0612691B2 JP H0612691 B2 JPH0612691 B2 JP H0612691B2 JP 60026991 A JP60026991 A JP 60026991A JP 2699185 A JP2699185 A JP 2699185A JP H0612691 B2 JPH0612691 B2 JP H0612691B2
- Authority
- JP
- Japan
- Prior art keywords
- main body
- heating element
- spiral
- spiral heating
- grooves
- 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
【発明の詳細な説明】 〔産業上の技術分野〕 本発明は螺線状の電流流路を有するスパイラル型発熱体
の端子の改良に関する。Description: TECHNICAL FIELD The present invention relates to an improvement of a terminal of a spiral heating element having a spiral current flow path.
〔発明の技術的背景〕 従来のスパイラル型発熱体を第３図及び第４図を参照し
て説明する。第３図及び第４図において、例えばＳｉＣ
からなる中空円筒状の本体１には、その一端の２箇所か
らそれぞれ一端側の部分で本体１の長手方向に沿い、本
体１中央部から他端側までの部分で螺線状をなすような
２本の溝２、２が切込まれている。この本体１は一端側
の溝２、２に例えばアルミナ製のスペーサ３、３を挟持
した後、本体１の一部を例えばアルミナ製の反円弧状の
締付治具４、４ではさみ、その外周に金属ベルト５を巻
付けることにより締付けられる。また、前記スペーサ
３、３が挟持されている本体１の一端側の外周には例え
ばステンレス製の反円弧状の端子金具６1、６2が取付け
られ、これら端子金具６1、６2はスペーサ３、３を貫通
するボルト７、７とナット８、８によって固定されてい
る。前記端子金具６1、６2にはそれぞれリード線９1、
９2が接続される。[Technical Background of the Invention] A conventional spiral heating element will be described with reference to FIGS. 3 and 4. In FIGS. 3 and 4, for example, SiC
The hollow cylindrical main body 1 is made up of two parts from one end along one side of the main body 1 along the longitudinal direction of the main body 1, and a spiral part is formed from the central part of the main body 1 to the other end. Two grooves 2, 2 are cut. This main body 1 has spacers 3 and 3 made of alumina, for example, sandwiched in grooves 2 and 2 on one end side, and then a part of the main body 1 is sandwiched by anti-circular fastening jigs 4 and 4 made of alumina, for example. It is tightened by winding the metal belt 5 around the outer circumference. Further, stainless steel anti-circular metal terminal fittings 6 1 and 6 2 are attached to the outer periphery of one end side of the main body 1 in which the spacers 3 and 3 are sandwiched, and these terminal metal fittings 6 1 and 6 2 are spacers. It is fixed by bolts 7, 7 and nuts 8, 8 penetrating through 3, 3. Lead wires 9 1 , respectively are attached to the terminal fittings 6 1 , 6 2 .
9 2 is connected.
上記スパイラル型発熱体では、電流はリード線９1、端
子金具６1、本体１、端子金具６2、リード線９2の経路
を通過するが、本体１が高抵抗のＳｉＣからなり、螺線
状の長い電流流路を有するので大きなジュール熱が発生
する。In the above spiral heating element, the electric current passes through the route of the lead wire 9 1 , the terminal fitting 6 1 , the main body 1, the terminal fitting 6 2 and the lead wire 9 2 , but the main body 1 is made of high resistance SiC, and the spiral wire is used. Since it has a long current flow path, large Joule heat is generated.
しかし、従来のスパイラル型発熱体の端子構造では、長
時間使用するうちにＳｉＣからなる本体１とステンレス
からなる端子金具６1、６2との熱膨張係数の違いから両
者の間に間隙が生じて接触抵抗が大きくなり、本体１へ
電流が流れにくくなって発熱不良を起す原因となってい
た。However, in the conventional terminal structure of the spiral heating element, a gap is generated between the main body 1 made of SiC and the terminal metal fittings 6 1 , 6 2 made of stainless steel due to a difference in thermal expansion coefficient between the two when used for a long time. As a result, the contact resistance becomes large, and it becomes difficult for current to flow to the main body 1, which causes heat generation failure.
本発明は上記欠点を解消するためになされたものであ
り、端子構造を変えることいより、長時間使用しても発
熱不良を生じないスパイラル型発熱体を提供しようとす
るものである。The present invention has been made in order to solve the above-mentioned drawbacks, and an object thereof is to provide a spiral heating element which does not cause heat generation failure even if it is used for a long time by changing the terminal structure.
本発明のスパイラル型発熱体は、円筒状の非金属中空管
からなり、その一端の２箇所からそれぞれ部分的に螺線
状をなすように２本の溝を切り込んだ本体を有するスパ
イラル型発熱体において、一端側で２本の溝によって分
離されスペーサにより絶縁された本体の対向する２つの
部分にそれぞれ孔を開孔し、これらの孔に本体とほぼ同
一の熱膨張係数を有する材質からなる端子を挿入して接
合し、これら端子の先端に端子金具を設けたことを特徴
とするものである。The spiral heating element of the present invention is composed of a cylindrical non-metallic hollow tube and has a main body in which two grooves are cut so as to partially form a spiral shape at two positions at one end thereof. In the body, holes are respectively formed in two opposing portions of the body which are separated by two grooves at one end side and are insulated by the spacer, and these holes are made of a material having substantially the same thermal expansion coefficient as that of the body. It is characterized in that terminals are inserted and joined, and terminal fittings are provided at the tips of these terminals.
このようなスパイラル型発熱体によれば、端子金具が本
体から離れているので、熱伝導によって端子金具がゆる
むことが少なく、接触抵抗の増大による発熱不良を低減
することができる。According to such a spiral heating element, since the terminal fitting is separated from the main body, the terminal fitting is less likely to loosen due to heat conduction, and heat generation failure due to an increase in contact resistance can be reduced.
以下、本発明の実施例を第１図及び第２図を参照して説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
第１図及び第２図において、例えばＳｉＣからなる中空
円筒状の本体１１には、その一端の２箇所からそれぞれ
一端側の部分で本体１１の長手方向に沿い本体１１中央
部から他端側までの部分で螺線状をなすような２本の溝
１２、１２が切込まれている。この本体１１は一端側の
溝１２、１２に例えばアルミナ製のスペーサ１３を挟持
した後、本体１１の一部を例えばアルミナ製の反円弧状
の締付治具１４、１４ではさみ、その外周に金属ベルト
１５を巻付けることにより締付けられる。また、本体１
１の一端側の溝１２、１２及び溝１２、１２に挟持され
たスペーサ１３によって分離された２つの部分にはそれ
ぞれ端子１６1、１６2が取付けられている。これら端子
１６1、１６2はＳｉ含浸ＳｉＣ棒からなり、本体１１に
開孔された孔に挿入し、Ｓｉを含む接着ペースト１７に
より接着含浸したものである。更に、これら端子１
６1、１６2の先端にはそれぞれ端子金具１８1、１８2が
ボルト１９、１９及び図示しないナットにより取付けら
れ、これら端子金具１８1、１８2にはリード線２０1、
２０2が接続されている。In FIGS. 1 and 2, a hollow cylindrical main body 11 made of, for example, SiC extends from the central portion of the main body 11 to the other end side along the longitudinal direction of the main body 11 at two portions from one end to one end side. Two grooves 12, 12 are formed so as to form a spiral shape at the portion. This main body 11 has, for example, a spacer 13 made of alumina, which is sandwiched between the grooves 12 on one end side, and then a part of the main body 11 is sandwiched by anti-arc tightening jigs 14, 14 made of alumina, for example. It is tightened by winding the metal belt 15. Also, the main body 1
Terminals 16 1 and 16 2 are attached to the two portions separated by the grooves 12 and 12 on one end side and the spacer 13 sandwiched between the grooves 12 and 12, respectively. These terminals 16 1 and 16 2 are made of Si-impregnated SiC rods, inserted into holes formed in the main body 11, and adhesively impregnated with an adhesive paste 17 containing Si. Furthermore, these terminals 1
Terminal fittings 18 1 and 18 2 are attached to the tips of 6 1 and 16 2 by bolts 19 and 19 and nuts (not shown), and lead wires 20 1 and 18 1 are attached to these terminal fittings 18 1 and 18 2 .
20 2 is connected.
このようなスパイラル型発熱体によれば、端子金具１８
1、１８2が端子１６1、１６2の先端に取付けられて本体
１１から離れているので、長時間使用しても熱伝導によ
って端子金具１８1、１８2がゆるむことが少なく、接触
抵抗の増大による発熱不良を低減することができる。According to such a spiral heating element, the terminal fitting 18
Since 1 and 18 2 are attached to the tips of the terminals 16 1 and 16 2 and are separated from the main body 11, the terminal fittings 18 1 and 18 2 do not loosen due to heat conduction even when used for a long time, and the contact resistance is reduced. The heat generation failure due to the increase can be reduced.
なお、上記実施例ではスパイラル型発熱体の本体の材質
をＳｉＣ、端子の材質をＳｉ含浸ＳｉＣ棒としたが、こ
れらは他の材質でもよく、両者の熱膨張係数がほぼ同一
のものであればよい。Although the material of the main body of the spiral heating element is SiC and the material of the terminal is Si-impregnated SiC rod in the above embodiment, other materials may be used as long as they have substantially the same thermal expansion coefficient. Good.
以上詳述した如く本発明によれば、発熱不良を起こすこ
となく長時間使用できるスパイラル型発熱体を提供でき
るものである。As described above in detail, according to the present invention, it is possible to provide a spiral heating element that can be used for a long time without causing heat generation failure.
第１図は本発明の実施例におけるスパイラル型発熱体の
正面図、第２図は第１図のII−II′線に沿う断面図、第
３図は従来のスパイラル型発熱体の正面図、第４図は第
３図のIV−IV′線に沿う断面図である。 １１…発熱体本体、１２…溝、１３…スペーサ、１４…
締付治具、１５…金属ベルト、１６1、１６2…端子、１
７…接着ペースト、１８1、１８2…端子金具、１９…ボ
ルト、２０1、２０2…リード線。FIG. 1 is a front view of a spiral heating element according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II ′ of FIG. 1, and FIG. 3 is a front view of a conventional spiral heating element. FIG. 4 is a sectional view taken along the line IV-IV 'in FIG. 11 ... Heating body main body, 12 ... Groove, 13 ... Spacer, 14 ...
Tightening jig, 15 ... Metal belt, 16 1 , 16 2 ... Terminal, 1
7 ... Adhesive paste, 18 1 , 18 2 ... Terminal fittings, 19 ... Bolts, 20 1 , 20 2 ... Lead wire.
Claims (1)
の２箇所からそれぞれ部分的に螺線状をなすように２本
の溝を切り込んだ本体を有するスパイラル型発熱体にお
いて、一端側で２本の溝によって分離されスペーサによ
り絶縁された本体の対向する２つの部分にそれぞれ孔を
開孔し、これらの孔に本体とほぼ同一の熱膨張係数を有
する材質からなる端子を挿入して接合し、これら端子の
先端に端子金具を設けたことを特徴とするスパイラル型
発熱体。1. A spiral heating element comprising a cylindrical non-metallic hollow tube having a main body in which two grooves are formed so as to partially form a spiral shape at two positions at one end thereof. Holes are formed in two opposing parts of the body which are separated by two grooves on the side and are insulated by the spacer, and terminals made of a material having a thermal expansion coefficient substantially the same as that of the body are inserted into these holes. Spiral type heating element characterized in that terminal metal fittings are provided at the ends of these terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60026991A JPH0612691B2 (en) | 1985-02-14 | 1985-02-14 | Spiral heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60026991A JPH0612691B2 (en) | 1985-02-14 | 1985-02-14 | Spiral heating element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61185883A JPS61185883A (en) | 1986-08-19 |
| JPH0612691B2 true JPH0612691B2 (en) | 1994-02-16 |
Family
ID=12208622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60026991A Expired - Fee Related JPH0612691B2 (en) | 1985-02-14 | 1985-02-14 | Spiral heating element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612691B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6454859B2 (en) * | 2015-10-20 | 2019-01-23 | 日本重化学工業株式会社 | Immersion heater |
| CN111616420A (en) * | 2020-07-17 | 2020-09-04 | 惠州市沛格斯科技有限公司 | Heating module and smoke generating equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5487950A (en) * | 1977-12-24 | 1979-07-12 | Tokai Konetsu Kogyo Kk | Linear or banddshaped carbonized silicon heater |
| JPS5835291U (en) * | 1981-09-01 | 1983-03-08 | 東芝セラミツクス株式会社 | Heating element mounting device |
-
1985
- 1985-02-14 JP JP60026991A patent/JPH0612691B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61185883A (en) | 1986-08-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |