JPH08148265A - Sheathed heater - Google Patents
Sheathed heaterInfo
- Publication number
- JPH08148265A JPH08148265A JP28342794A JP28342794A JPH08148265A JP H08148265 A JPH08148265 A JP H08148265A JP 28342794 A JP28342794 A JP 28342794A JP 28342794 A JP28342794 A JP 28342794A JP H08148265 A JPH08148265 A JP H08148265A
- Authority
- JP
- Japan
- Prior art keywords
- metal pipe
- sealing
- sheathed heater
- insulator
- electrically insulating
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電気絶縁粉末を充填した
後、金属パイプの両端を封口材で封口したシーズヒータ
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheathed heater in which both ends of a metal pipe are sealed with a sealing material after being filled with electrically insulating powder.
【０００２】[0002]
【従来の技術】近年、シーズヒータは簡便であるととも
に安全性が高く、かつ耐食性に優れているため、オーブ
ン電子レンジ、ホツトプレート、食器洗い機など調理機
器、または暖房機器ほかの家庭用機器の加熱源として幅
広く使用されている。このシーズヒータは、一般に、両
端に端子棒を接続したコイル状の電熱線を金属パイプの
中央部に挿入し、この金属パイプにマグネシア粉末から
なる電気絶縁粉末を充填して圧延減径、熱処理などを経
て金属パイプの端末を封口している。2. Description of the Related Art In recent years, since sheath heaters are simple, highly safe, and have excellent corrosion resistance, they are used for heating cooking appliances such as microwave ovens, hot plates, and dishwashers, or heating appliances and other household appliances. Widely used as a source. This sheathed heater is generally a coil-shaped heating wire with terminal bars connected at both ends inserted into the center of a metal pipe, and the metal pipe is filled with electrically insulating powder consisting of magnesia powder to reduce the rolling diameter, heat treatment, etc. After that, the end of the metal pipe is sealed.
【０００３】従来、この種のシーズヒータは、図２に示
すように構成していた。以下、その構成について説明す
る。Conventionally, this type of sheathed heater has been constructed as shown in FIG. The configuration will be described below.
【０００４】図に示すように、金属パイプ１は、中央部
に電源接続端子２を備えたコイル状の電熱線３を挿入
し、この金属パイプ１にマグネシア粉末からなる電気絶
縁粉末４を充填して圧延減径、熱処理などを施してい
る。封口部は、封口ガラス５、シリコーンゴムなどから
なる２次封口材６およびアルミナ磁器などの碍子７で形
成している。As shown in the figure, a metal pipe 1 is inserted with a coil-shaped heating wire 3 having a power source connecting terminal 2 in the center thereof, and the metal pipe 1 is filled with an electrically insulating powder 4 made of magnesia powder. Rolling reduction, heat treatment, etc. The sealing portion is formed by a sealing glass 5, a secondary sealing material 6 made of silicone rubber or the like, and an insulator 7 such as alumina porcelain.
【０００５】上記構成の封口部についてその作用につい
て説明すると、まず、封口ガラス５は、電気絶縁粉末４
を防湿するために、金属パイプ１と電源接続端子２との
間の密閉を行っている。シリコーンゴムなどからなる２
次封口材６は、碍子７を封口部に保持させるために用い
ている。碍子７は絶縁距離を確保する。The operation of the sealing portion having the above structure will be described. First, the sealing glass 5 is composed of the electrically insulating powder 4.
In order to prevent moisture, the metal pipe 1 and the power supply connection terminal 2 are hermetically sealed. 2 made of silicone rubber
The next sealing material 6 is used to hold the insulator 7 in the sealing portion. The insulator 7 secures an insulation distance.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の構成では、加工上、シーズヒータ端末部の金
属パイプ１の端面から電気絶縁粉末４までの深さがばら
つくため、封口ガラス５の表面からの碍子７の保持のた
めに必要なシリコーンゴムなどの２次封口材６の量をシ
ーズヒータごとに変化させながら封口するので作業性が
悪く、また材料の管理等も困難であり、作業の自動化も
困難で、費用が高いという問題点を有していた。However, in the conventional structure as described above, the depth from the end surface of the metal pipe 1 at the end of the sheath heater to the electrically insulating powder 4 varies due to processing, so that the surface of the sealing glass 5 is changed. Since the sealing is performed while changing the amount of the secondary sealing material 6 such as silicone rubber required to hold the insulator 7 for each sheath heater, the workability is poor and the management of the material is difficult. It was difficult to automate and had a problem that the cost was high.
【０００７】本発明は上記従来の課題を解決するもの
で、部品点数を減らした簡単な構成で封口部の特性を確
保し、しかも品質が優れたシーズヒータを提供すること
を目的としている。The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a sheathed heater which ensures the characteristics of the sealing portion with a simple structure in which the number of parts is reduced and which is excellent in quality.
【０００８】[0008]
【課題を解決するための手段】本発明は上記目的を達成
するために、金属パイプと、両端に電源接続端子を接続
し前記金属パイプの中央部に挿入したコイル状の電熱線
と、前記金属パイプに充填したマグネシア粉末からなる
電気絶縁粉末と、前記金属パイプの端末を封口する封口
材とを備え、前記封口材は、防湿用の封口ガラスと絶縁
距離確保のためのアルミナ磁器などの碍子とを組み立て
時に熱的に一体化して形成したことを課題解決手段とし
ている。In order to achieve the above object, the present invention provides a metal pipe, a coil-shaped heating wire connected to both ends of a power source connection terminal and inserted in the central portion of the metal pipe, and the metal. An electrically insulating powder made of magnesia powder filled in the pipe, and a sealing material for sealing the end of the metal pipe, the sealing material is a moisture-proof sealing glass and an insulator such as alumina porcelain for securing an insulating distance. The means for solving the problem is that the above is thermally integrated during assembly.
【０００９】[0009]
【作用】本発明は上記した課題解決手段により、封口ガ
ラスによるシーズヒータの封口加工前に金属パイプ端面
から電気絶縁粉末までの深さを一定化するとともに、封
口ガラスの封口作業時に碍子を同時に加熱することによ
り、封口ガラスと碍子とを接合させることで、防湿性能
と絶縁距離とを確保でき、２次封口材が不要となり、部
品点数を低減できる。According to the present invention, by the above-mentioned means for solving the problems, the depth from the end face of the metal pipe to the electrically insulating powder is made constant before the sheathing heater is sealed with the sealing glass, and the insulator is simultaneously heated during the sealing work of the sealing glass. By joining the sealing glass and the insulator, the moisture-proof performance and the insulation distance can be secured, and the secondary sealing material is not required, and the number of parts can be reduced.
【００１０】[0010]
【実施例】以下、本発明の一実施例を図１を参照しなが
ら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
【００１１】図に示すように、金属パイプ１１は、中央
部に電源接続端子１２を接続したコイル状の電熱線１３
を挿入し、この金属パイプ１１にマグネシア粉末からな
る電気絶縁粉末１４を充填して圧延減径、熱処理などを
施している。As shown in the figure, the metal pipe 11 has a coil-shaped heating wire 13 in which a power source connecting terminal 12 is connected to a central portion thereof.
Then, the metal pipe 11 is filled with electric insulating powder 14 made of magnesia powder, and subjected to rolling reduction, heat treatment and the like.
【００１２】封口ガラス１５は、この実施例では、従来
金属パイプ１１端面から金属絶縁粉末１４までの寸法が
不安定であったのを、金属絶縁粉末１４を金属パイプ１
１内に充填する時点で安定させ、アルミナ磁器の碍子１
６と接合させることによって、封口材１７を形成する。
碍子１６の保持を封口ガラス１５の封口加工時に封口ガ
ラス１５と熱的に一体化して同時接合させる。In the sealing glass 15 according to this embodiment, the dimension from the end surface of the metal pipe 11 to the metal insulating powder 14 was not stable, but the metal insulating powder 14 was replaced with the metal pipe 1.
Stabilize at the time of filling the inside of the alumina insulator 1
The sealing material 17 is formed by joining with the sealing material 6.
The insulator 16 is thermally integrated with the sealing glass 15 at the time of sealing the sealing glass 15 and simultaneously joined.
【００１３】[0013]
【発明の効果】以上のように本発明は、金属パイプと、
両端に電源接続端子を接続し前記金属パイプの中央部に
挿入したコイル状の電熱線と、前記金属パイプに充填し
たマグネシア粉末からなる電気絶縁粉末と、前記金属パ
イプの端末を封口する封口材とを備え、前記封口材は、
防湿用の封口ガラスと絶縁距離確保のためのアルミナ磁
器などの碍子とを組み立て時に熱的に一体化して形成し
たから、封口ガラスの封口作業時に碍子を同時に加熱す
ることにより、封口ガラスと碍子とを接合させること
で、防湿性能と絶縁距離とを確保でき、シリコーンゴム
などの２次封口材を用いる従来のシーズヒータに比べ
て、２次封口材にまつわる材料費や加工費、設備費など
を削減することができる。As described above, the present invention provides a metal pipe,
A coil-shaped heating wire having power supply connection terminals connected to both ends and inserted in the central portion of the metal pipe, an electrically insulating powder made of magnesia powder filled in the metal pipe, and a sealing material for sealing the end of the metal pipe. And the sealing material,
Since the sealing glass for moisture prevention and the insulator such as alumina porcelain for securing the insulation distance are formed by thermal integration at the time of assembly, by simultaneously heating the insulator during the sealing work of the sealing glass, the sealing glass and the insulator are By bonding the two, it is possible to secure the moisture-proof performance and insulation distance, and reduce the material cost, processing cost, equipment cost, etc. related to the secondary sealing material compared to the conventional sheathed heater that uses the secondary sealing material such as silicone rubber. can do.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の一実施例のシーズヒータの一部切欠し
た正面図FIG. 1 is a partially cutaway front view of a sheathed heater according to an embodiment of the present invention.
【図２】従来のシーズヒータの一部切欠した正面図FIG. 2 is a partially cutaway front view of a conventional sheathed heater.
１１ 金属パイプ １２ 電源接続端子 １３ 電熱線 １４ 電気絶縁粉末 １５ 封口ガラス １６ 碍子 １７ 封口材 11 Metal Pipe 12 Power Supply Connection Terminal 13 Heating Wire 14 Electrical Insulating Powder 15 Sealing Glass 16 Insulator 17 Sealing Material
Claims (1)
続し前記金属パイプの中央部に挿入したコイル状の電熱
線と、前記金属パイプに充填したマグネシア粉末からな
る電気絶縁粉末と、前記金属パイプの端末を封口する封
口材とを備え、前記封口材は、防湿用の封口ガラスと絶
縁距離確保のためのアルミナ磁器などの碍子とを組み立
て時に熱的に一体化して形成したシーズヒータ。1. A metal pipe, a coil-shaped heating wire having power supply terminals connected to both ends and inserted in the central portion of the metal pipe, an electrically insulating powder made of magnesia powder filled in the metal pipe, and the metal. A sheathed heater comprising a sealing material for sealing the end of the pipe, wherein the sealing material is formed by thermally integrating a sealing glass for moisture prevention and an insulator such as alumina porcelain for securing an insulation distance during assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28342794A JPH08148265A (en) | 1994-11-17 | 1994-11-17 | Sheathed heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28342794A JPH08148265A (en) | 1994-11-17 | 1994-11-17 | Sheathed heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08148265A true JPH08148265A (en) | 1996-06-07 |
Family
ID=17665397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28342794A Pending JPH08148265A (en) | 1994-11-17 | 1994-11-17 | Sheathed heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08148265A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938947A (en) * | 2012-11-16 | 2013-02-20 | 杭州佐帕斯工业有限公司 | Electric heating tube with overheat protector and two ends pressed hermetically |
| CN103781206A (en) * | 2014-01-07 | 2014-05-07 | 温州海得利电气有限公司 | Electric heater sealing device |
| CN109005606A (en) * | 2018-10-11 | 2018-12-14 | 无锡博睿奥克电气有限公司 | High voltage appearance heating element ferrule structure |
| WO2019146675A1 (en) * | 2018-01-25 | 2019-08-01 | カシン工業株式会社 | Insulated waterproof vehicle-mounted heater having high withstand voltage, vehicle-mounted heater unit, vehicle-mounted heater device, method for manufacturing vehicle-mounted heater unit, and insulated waterproof heater |
-
1994
- 1994-11-17 JP JP28342794A patent/JPH08148265A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938947A (en) * | 2012-11-16 | 2013-02-20 | 杭州佐帕斯工业有限公司 | Electric heating tube with overheat protector and two ends pressed hermetically |
| CN103781206A (en) * | 2014-01-07 | 2014-05-07 | 温州海得利电气有限公司 | Electric heater sealing device |
| WO2019146675A1 (en) * | 2018-01-25 | 2019-08-01 | カシン工業株式会社 | Insulated waterproof vehicle-mounted heater having high withstand voltage, vehicle-mounted heater unit, vehicle-mounted heater device, method for manufacturing vehicle-mounted heater unit, and insulated waterproof heater |
| JPWO2019146675A1 (en) * | 2018-01-25 | 2020-02-06 | カシン工業株式会社 | High withstand voltage insulation waterproof type automotive heater and automotive heater unit |
| CN109005606A (en) * | 2018-10-11 | 2018-12-14 | 无锡博睿奥克电气有限公司 | High voltage appearance heating element ferrule structure |
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