JP2775816B2 - Manufacturing method of tubular heating wire heater - Google Patents
Manufacturing method of tubular heating wire heaterInfo
- Publication number
- JP2775816B2 JP2775816B2 JP1050405A JP5040589A JP2775816B2 JP 2775816 B2 JP2775816 B2 JP 2775816B2 JP 1050405 A JP1050405 A JP 1050405A JP 5040589 A JP5040589 A JP 5040589A JP 2775816 B2 JP2775816 B2 JP 2775816B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- glass tube
- resistant glass
- resistant
- lead wire
- 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 - Lifetime
Links
Landscapes
- Resistance Heating (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、電熱線ヒータを、石英管等の耐熱ガラス管
で保持した管形電熱線ヒータの製造方法に関するもので
ある。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a tubular heating wire heater in which a heating wire heater is held by a heat-resistant glass tube such as a quartz tube.
従来の技術 従来より電気ストーブ，電気こたつ等の熱源として広
く使用されている管形電熱線ヒータは、第６図に示すよ
うに、コイル状に形成された電熱線ヒータ１を、耐熱ガ
ラス管２内に碍子6a,6bを利用して固定した構造となっ
ている。2. Description of the Related Art As shown in FIG. 6, a tubular heating wire heater which has been widely used as a heat source for an electric stove, an electric kotatsu, etc., comprises a coil-shaped heating wire heater 1 and a heat-resistant glass tube 2 as shown in FIG. The structure is fixed using insulators 6a and 6b inside.
そして、その組立工程としては、前記電熱線ヒータ１
の両端にそれぞれ形成された直線状のリード線部3a,3b
の一方に、まず第１の碍石4aを挿入した後に、そのリー
ド線部3aと電力供給電線5aとを金属スリーブ6aにより圧
着接続する。The assembling process includes the heating wire heater 1
Linear lead wire portions 3a, 3b formed at both ends of
First, after inserting the first insulator 4a, the lead wire portion 3a and the power supply wire 5a are crimp-connected by the metal sleeve 6a.
次に、その電熱線ヒータ１を、反対側のリード線部3b
側より両端が開口した耐熱ガラス管２に挿入し、前記第
１の碍石4aを、耐熱ガラス管２の端部に圧入固定する。Next, the heating wire heater 1 is connected to the lead wire portion 3b on the opposite side.
The first insulator 4a is inserted into the heat-resistant glass tube 2 having both ends opened from the side, and the first insulator 4a is press-fitted and fixed to the end of the heat-resistant glass tube 2.
しかる後に、リード線部3bに第２の碍石4bを挿入し、
その第２の碍石4bを耐熱ガラス管２の他方の端部に圧入
する。Then, insert the second insulator 4b into the lead wire portion 3b,
The second insulator 4b is pressed into the other end of the heat-resistant glass tube 2.
そして、リード線部3bと電力供給線5bとを金属スリー
ブ6bにより圧着接続する。Then, the lead wire portion 3b and the power supply wire 5b are crimp-connected by the metal sleeve 6b.
発明が解決しようとする課題 しかしながら、上記の構成のものは、組立工数も多
く、作業性の悪いものであり、組立作業中の不良も多い
ものであった。Problems to be Solved by the Invention However, the above configuration has many assembling man-hours, has poor workability, and has many defects during assembling work.
また、組立完成後においても、耐熱ガラス管２と碍石
4a,4bはいずれも高硬度な物質であるため、それぞれの
係合固定は確実性を欠くものであり、取扱中、運送中等
において、係合が外れることがあった。Even after the assembly is completed, the heat-resistant glass tube 2 and the insulator
Since 4a and 4b are both high-hardness substances, their engagement and fixing lack reliability, and the engagement may be released during handling, transportation, or the like.
さらに、碍石4a,4bとリード線部3a,3bとの間は固定さ
れていないため、電熱線ヒータ１が耐熱ガラス管２内で
移動し、ヒータ１に変形が生じることもあった。Furthermore, since the insulators 4a, 4b and the lead wires 3a, 3b are not fixed, the heating wire heater 1 may move within the heat-resistant glass tube 2 and the heater 1 may be deformed.
課題を解決するための手段 本発明管形電熱線ヒータの製造方法は、上述の課題を
解決するために、両端部に直線状のリード線部が形成さ
れた電熱線ヒータコイルを、前記リード線部に、そのリ
ード線部との間に空間が生じる程度の内径を有する前記
電熱線ヒータコイル以上の融点を有する耐熱耐熱金属管
を挿入した状態で、両端部が開口した耐熱ガラス管内
に、前記リード線部の一部が前記開口よりそれぞれ突出
するように挿入し、前記耐熱金属管に対向する前記耐熱
ガラス管の端部を加熱した後に、前記耐熱ガラス管の内
径より小なる幅を有する押え型により前記耐熱ガラス管
の端部を前記耐熱金属管とともに押圧変形せしめ、前記
開口の一部を耐熱ガラス管の内部と外部に連通する透口
として残して耐熱ガラス管と前記耐熱金属管とを熱圧着
するとともに、その押圧変形された前記耐熱金属管によ
り前記リード線部を、その直径方向より挾持せしめるこ
とを特徴とするものである。Means for Solving the Problems In order to solve the above-mentioned problems, a method for manufacturing a tubular heating wire heater according to the present invention includes: a heating wire having a linear lead wire portion formed at both ends; In a state in which a heat-resistant heat-resistant metal tube having a melting point equal to or higher than the heating wire heater coil having an inner diameter such that a space is created between the lead wire portion and the heat-resistant heat-resistant metal tube is inserted into a heat-resistant glass tube having both ends opened, A presser having a width smaller than the inner diameter of the heat-resistant glass tube after inserting a part of the lead wire portion so as to protrude from the opening and heating the end of the heat-resistant glass tube facing the heat-resistant metal tube. The heat-resistant glass tube and the heat-resistant metal tube are deformed by pressing the end of the heat-resistant glass tube together with the heat-resistant metal tube, leaving a part of the opening as a through hole communicating with the inside and the outside of the heat-resistant glass tube. heat The lead wire portion is clamped from the diametrical direction by the pressure-deformed heat-resistant metal tube.
作用 上記構成によれば、加熱後に、耐熱ガラス管の内径よ
り小なる幅を有する押え型により前記耐熱ガラス管の端
部を前記耐熱金属管とともに押圧変形せしめることによ
り、イ）耐熱ガラス管と耐熱金属管との熱圧着、ロ）押
圧変形された前記耐熱金属管により前記リード線部を、
その直径方向より挾持せしめること、ハ）耐熱ガラス管
の開口の一部を耐熱ガラス管の内部と外部に連通する空
気抜きのための透口として残して封鎖すること、の３つ
を同時に行うことができるものである。また、電熱線ヒ
ータコイルのリード線部は、押圧変形された前記耐熱金
属管によりその直径方向より挾持されているため、従来
のように碍石を使用する必要なく、その製造は簡単にな
るとともに、耐熱ガラス管により直接リード線部を溶着
保持した構成に比べ、本発明では、リード線部との間に
空間を生じる程度の内径を有する金属管を使用している
ため、金属管が押圧変形された後にも、リード線部と金
属管との間に若干の空隙部が形成され、この空隙部が使
用時の加熱による耐熱ガラス管とリード線部および金属
管との間の熱膨脹係数の差を吸収し、耐熱ガラス管にク
ラックが生じることを防止する。According to the above configuration, after the heating, the end portion of the heat-resistant glass tube is pressed and deformed together with the heat-resistant glass tube by a holding die having a width smaller than the inner diameter of the heat-resistant glass tube. (B) thermo-compression with a metal tube;
And c) closing the heat-resistant glass tube while leaving a part of the opening of the heat-resistant glass tube as a vent for communicating air between the inside and the outside of the heat-resistant glass tube. You can do it. Further, since the lead wire portion of the heating wire heater coil is clamped from the diameter direction by the heat-resistant metal tube pressed and deformed, it is not necessary to use an insulator as in the prior art, and the manufacturing thereof is simplified. In contrast to the configuration in which the lead wire portion is directly welded and held by a heat-resistant glass tube, the present invention uses a metal tube having an inner diameter enough to create a space between the lead wire portion and the metal tube. Even after the heat treatment, a small gap is formed between the lead wire and the metal tube, and this gap causes a difference in thermal expansion coefficient between the heat-resistant glass tube and the lead wire and the metal tube due to heating during use. To prevent cracks in the heat-resistant glass tube.
実 施 例 以下図面を参照して本発明の一実施例を説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
なお、第６図に示した前述の従来例と同一構成部品に
は同一符号を付している。The same components as those in the above-described conventional example shown in FIG. 6 are denoted by the same reference numerals.
第１図は、本発明の管形電熱線ヒータの一実施例の断
面図、第２図は、同要部の拡大平面図、第３図は同拡大
側面図、第４図は第２図におけるＡ−Ａ′の拡大断面
図、第５図は第２図におけるＢ−Ｂ′の拡大断面図であ
る。FIG. 1 is a cross-sectional view of one embodiment of the tubular heating wire heater of the present invention, FIG. 2 is an enlarged plan view of the essential part, FIG. 3 is an enlarged side view, and FIG. 5 is an enlarged sectional view taken along the line AA 'in FIG. 5, and FIG. 5 is an enlarged sectional view taken along the line BB' in FIG.
以下この実施例を、その製造工程とともに説明する。
まず、直径0.65mmの鉄・クロム熱線よりなる電熱線ヒー
タコイル１のリード線部3a,3bに、その電熱線ヒータコ
イル１以上の融点を有するステンレス等の耐熱金属から
なる直径0.7mmの耐熱金属管8a,8bを挿入し、その電熱線
ヒータ１を石英管等からなる耐熱ガラス管２内に、前記
耐熱金属管8a,8bの端部がそれぞれ若干突出するように
挿入する。Hereinafter, this embodiment will be described together with its manufacturing process.
First, a 0.7 mm diameter heat-resistant metal made of a heat-resistant metal such as stainless steel having a melting point equal to or higher than that of the heating wire heater coil 1 is attached to the lead wire portions 3a and 3b of the heating wire heater coil 1 made of a 0.65 mm diameter iron / chrome hot wire. The tubes 8a and 8b are inserted, and the heating wire heater 1 is inserted into the heat-resistant glass tube 2 made of a quartz tube or the like so that the ends of the heat-resistant metal tubes 8a and 8b slightly protrude, respectively.
しかる後に、耐熱ガラス管２の両端部をガスバーナ等
により、その軟化温度以上に急速に加熱した後に、第４
図および第５図に示すように中央部に突起部９を有する
押え型10により両側から押圧し、耐熱ガラス管２および
耐熱金属管8a,8bに変形を与え、耐熱金属管8a,8bを熱圧
着により耐熱ガラス管２に固定するとともに、耐熱金属
管8a,8bによりリード線部3a,3bをその直径方向より挟持
した状態で固定する。Thereafter, both ends of the heat-resistant glass tube 2 are rapidly heated by a gas burner or the like to a temperature equal to or higher than the softening temperature thereof.
As shown in FIG. 5 and FIG. 5, pressing is performed from both sides by a pressing die 10 having a projection 9 at the center, thereby deforming the heat-resistant glass tube 2 and the heat-resistant metal tubes 8a, 8b, and heating the heat-resistant metal tubes 8a, 8b. It is fixed to the heat-resistant glass tube 2 by crimping, and the lead wire portions 3a, 3b are fixed by the heat-resistant metal tubes 8a, 8b while being sandwiched from the diameter direction.
前記押え型10の突起部９の幅ｌは、耐熱ガラス管２の
内径より若干小さく、例えば耐熱ガラス管２の内径が8.
5mmの場合、8.0mmに設定されており、押圧後において、
耐熱ガラス管２の両側にそれぞれ内部と外部に連通する
空気の出入孔11が形成されるよう構成されている。The width l of the projection 9 of the holding die 10 is slightly smaller than the inner diameter of the heat-resistant glass tube 2, for example, when the inner diameter of the heat-resistant glass tube 2 is 8.
In the case of 5 mm, it is set to 8.0 mm, and after pressing,
An air inlet / outlet 11 communicating with the inside and the outside is formed on both sides of the heat resistant glass tube 2.
以上のようにして作成された管形電熱線ヒータは、電
熱線ヒータコイル１の両端部が耐熱ガラス管に熱圧着さ
れた耐熱金属管２により上下より挾持された形で固定保
持されるため、使用中等における衝撃により電熱線ヒー
タコイル１が耐熱ガラス管内を移動し、ヒータコイルに
変形が生じることはなくなるものである。The tube-shaped heating wire heater prepared as described above is fixedly held in such a manner that both ends of the heating wire heater coil 1 are sandwiched from above and below by a heat-resistant metal tube 2 thermocompression-bonded to a heat-resistant glass tube. The heating coil 1 does not move in the heat-resistant glass tube due to an impact during use or the like, and the heater coil is not deformed.
また、本実施例のように耐熱ガラス管の内部と外部を
継ぐ空気出入孔11を形成しておけば、ここから空気が出
入して、使用時に電熱線ヒータコイル１の表面に酸化被
膜が形成され、必要以上の酸化を防ぎ耐久性を向上させ
ることができる。Further, if an air inlet / outlet 11 connecting the inside and the outside of the heat-resistant glass tube is formed as in this embodiment, air flows in and out of the hole, and an oxide film is formed on the surface of the heating wire heater coil 1 during use. Therefore, unnecessary oxidation can be prevented and durability can be improved.
さらに、本実施例のようにリード線部3a,3bに耐熱金
属管8a,8bを挿入しておくことにより、加熱押圧した際
に第５図に示されるように耐熱金属管8a,8bとリード線
部3a,3bとの間に若干の空隙部12が形成され、この空隙
部12が耐熱ガラス管２とリード線部3a,3bおよび耐熱金
属管3a,3bとの間の熱膨張係数の差を吸収し、耐熱ガラ
ス管にクラックが生じることを防止できるものである。Further, by inserting the heat-resistant metal tubes 8a and 8b into the lead wire portions 3a and 3b as in the present embodiment, the heat-resistant metal tubes 8a and 8b are connected to the lead wires as shown in FIG. A slight gap 12 is formed between the wire portions 3a and 3b, and the gap 12 is formed by a difference in thermal expansion coefficient between the heat-resistant glass tube 2 and the lead wire portions 3a and 3b and the heat-resistant metal tubes 3a and 3b. To prevent cracks from occurring in the heat-resistant glass tube.
なお、耐熱ガラス管の軟化温度に比べ、ヒータコイル
１の軟化温度が充分に低い場合には、加熱圧着時に、ヒ
ータコイル１が溶融することも考えられるが、このよう
な場合には、耐熱ガラス管２をその外周より速やかに加
熱し、そして加熱圧着後に、その加熱部分に冷風を吹き
付けることによりすばやく冷却すればよい。If the softening temperature of the heater coil 1 is sufficiently lower than the softening temperature of the heat-resistant glass tube, the heater coil 1 may be melted at the time of heat-press bonding. The tube 2 may be quickly heated from its outer periphery, and after hot pressing, may be cooled quickly by blowing cold air on the heated portion.
発明の効果 以上のように本発明によれば、組立時、共に硬度の高
い耐熱ガラスと碍石を係合させる作業も必要とせず、そ
の作業性は向上するものであり、また、組立後において
も、ヒータコイルのリード線部は確実に耐熱ガラス管の
端部に固定保持されているため、使用時等においてヒー
タコイルが耐熱ガラス管内を移動して、ヒータコイルが
変形するというようなことも軽減除去されるものであ
る。さらに、加熱後に、耐熱ガラス管の内径より小なる
幅を有する押え型により前記耐熱ガラス管の端部を前記
耐熱金属管とともに押圧変形せしめることにより、イ）
耐熱ガラス管と耐熱金属管との熱圧着、ロ）押圧変形さ
れた前記耐熱金属管により前記リード線部を、その直径
方向より挾持せしめること、ハ）耐熱ガラス管の開口の
一部を耐熱ガラス管の内部と外部に連通する空気抜きの
ための透口として残して封鎖すること、の３つを同時に
行うことができるものである。また、電熱線ヒータコイ
ルのリード線部は、押圧変形された前記耐熱金属管によ
りその直径方向より挾持されているため、従来のように
碍石を使用する必要なく、その製造は簡単になるととも
に、耐熱ガラス管により直接リード線部を溶着保持した
構成に比べ、本発明では、リード線部との間に空間を生
じる程度の内径を有する金属管を使用しているため、金
属管が押圧変形された後にも、リード線部と金属管との
間に若干の空隙部が形成され、この空隙部が使用時の加
熱による耐熱ガラス管とリード線部および金属管との間
の熱膨脹係数の差を吸収し、耐熱ガラス管にクラックが
生じることを防止する。Effects of the Invention As described above, according to the present invention, at the time of assembling, there is no need to perform an operation of engaging the heat-resistant glass and the insulator having high hardness together, and the workability is improved. However, since the lead wire portion of the heater coil is securely fixed to the end of the heat-resistant glass tube, the heater coil may move inside the heat-resistant glass tube during use and deform the heater coil. It is reduced and removed. Further, after the heating, the end of the heat-resistant glass tube is pressed and deformed together with the heat-resistant glass tube by a holding die having a width smaller than the inner diameter of the heat-resistant glass tube, so that a).
Thermocompression bonding between a heat-resistant glass tube and a heat-resistant metal tube, b) clamping the lead wire portion from the diameter direction by the pressed and deformed heat-resistant metal tube, c) heat-resistant glass at a part of the opening of the heat-resistant glass tube. It is possible to simultaneously perform the three operations of closing the pipe, leaving it as a vent for air release communicating between the inside and the outside of the pipe. Further, since the lead wire portion of the heating wire heater coil is clamped from the diameter direction by the heat-resistant metal tube pressed and deformed, it is not necessary to use an insulator as in the prior art, and the manufacturing thereof is simplified. Compared to a configuration in which the lead wire portion is directly welded and held by a heat-resistant glass tube, the present invention uses a metal tube having an inner diameter enough to create a space between the lead wire portion and the metal tube. Even after the heat treatment, a small gap is formed between the lead wire and the metal tube, and this gap causes a difference in thermal expansion coefficient between the heat-resistant glass tube and the lead wire and the metal tube due to heating during use. To prevent cracks from occurring in the heat-resistant glass tube.
第１図は本発明の管形電熱線ヒータの一実施例の断面
図、第２図は同要部の拡大平面図、第３図は同要部の拡
大側面図、第４図は第２図のＡ−Ａ′線における拡大断
面図、第５図は第２図のＢ−Ｂ′線における拡大断面
図、第６図は従来の管形電熱線ヒータの断面図である。 １……電熱線ヒータコイル、２……耐熱ガラス管、3a,3
b……リード線部、8a,8b……耐熱金属管、11……空気出
入孔、12……空隙。FIG. 1 is a cross-sectional view of an embodiment of a tubular heating wire heater according to the present invention, FIG. 2 is an enlarged plan view of the essential part, FIG. 3 is an enlarged side view of the essential part, and FIG. 5 is an enlarged sectional view taken along line AA 'of FIG. 5, FIG. 5 is an enlarged sectional view taken along line BB' of FIG. 2, and FIG. 6 is a sectional view of a conventional tubular heating wire heater. 1. Heating wire heater coil 2. Heat resistant glass tube, 3a, 3
b: Lead wire portion, 8a, 8b: Heat-resistant metal tube, 11: Air inlet / outlet hole, 12: Void.
Claims (1)
電熱線ヒータコイルを、前記リード線部に、そのリード
線部との間に空間が生じる程度の内径を有する前記電熱
線ヒータコイル以上の融点を有する耐熱耐熱金属管を挿
入した状態で、両端部が開口した耐熱ガラス管内に、前
記リード線部の一部が前記開口よりそれぞれ突出するよ
うに挿入し、前記耐熱金属管に対向する前記耐熱ガラス
管の端部を加熱した後に、前記耐熱ガラス管の内径より
小なる幅を有する押え型により前記耐熱ガラス管の端部
を前記耐熱金属パイプとともに押圧変形せしめ、前記開
口の一部を耐熱ガラス管の内部と外部に連通する透口と
して残して耐熱ガラス管と前記耐熱金属管とを熱圧着す
るとともに、その加熱圧着された前記耐熱金属管により
前記リード線部を、その直径方向より挾持せしめること
を特徴とする管形電熱線ヒータの製造方法。1. A heating wire heater coil having linear lead wire portions formed at both ends, wherein said heating wire heater has an inner diameter such that a space is formed between said lead wire portion and said lead wire portion. With the heat-resistant heat-resistant metal tube having a melting point higher than that of the coil inserted, the heat-resistant glass tube having both ends opened is inserted so that a part of the lead wire portion protrudes from the opening. After the opposite end of the heat-resistant glass tube is heated, the end of the heat-resistant glass tube is pressed and deformed together with the heat-resistant metal pipe by a pressing die having a width smaller than the inner diameter of the heat-resistant glass tube, and one end of the opening is opened. The heat-resistant glass tube and the heat-resistant metal tube are thermocompression-bonded while leaving the portion as an opening communicating with the inside and the outside of the heat-resistant glass tube, and the lead wire portion is formed by the heat-pressed heat-resistant metal tube. Method of manufacturing a tubular heating wire heater, characterized in that allowed to pinched than its diameter direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1050405A JP2775816B2 (en) | 1989-03-02 | 1989-03-02 | Manufacturing method of tubular heating wire heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1050405A JP2775816B2 (en) | 1989-03-02 | 1989-03-02 | Manufacturing method of tubular heating wire heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02230682A JPH02230682A (en) | 1990-09-13 |
| JP2775816B2 true JP2775816B2 (en) | 1998-07-16 |
Family
ID=12857955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1050405A Expired - Lifetime JP2775816B2 (en) | 1989-03-02 | 1989-03-02 | Manufacturing method of tubular heating wire heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2775816B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101846509B1 (en) * | 2017-03-29 | 2018-04-09 | (주)앤피에스 | Heater and substrate processing apparatus having the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373096C (en) * | 2003-06-11 | 2008-03-05 | 金斗年 | Method and device of inserting a coated electric heating wire into a hot water tube and a sealing apparatus thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5125112Y2 (en) * | 1971-08-24 | 1976-06-26 | ||
| JPS504147Y2 (en) * | 1971-08-25 | 1975-02-02 |
-
1989
- 1989-03-02 JP JP1050405A patent/JP2775816B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101846509B1 (en) * | 2017-03-29 | 2018-04-09 | (주)앤피에스 | Heater and substrate processing apparatus having the same |
| US10950473B2 (en) | 2017-03-29 | 2021-03-16 | Nps Corporation | Heat source device and substrate processing apparatus including same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02230682A (en) | 1990-09-13 |
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