JPH0120791Y2 - - Google Patents
Info
- Publication number
- JPH0120791Y2 JPH0120791Y2 JP12962885U JP12962885U JPH0120791Y2 JP H0120791 Y2 JPH0120791 Y2 JP H0120791Y2 JP 12962885 U JP12962885 U JP 12962885U JP 12962885 U JP12962885 U JP 12962885U JP H0120791 Y2 JPH0120791 Y2 JP H0120791Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- conductor
- outer periphery
- heating
- insulating material
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims description 34
- 239000004020 conductor Substances 0.000 claims description 32
- 239000011810 insulating material Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000011888 foil Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- General Induction Heating (AREA)
- Resistance Heating (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は同軸ケーブル状の可撓性発熱体に関
する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a coaxial cable-like flexible heating element.
電気的発熱体は通常は線状又は面状を成し、通
電部分自体が発熱するものであるため、発熱冷却
の繰り返しにより細径化して発熱量が変化した
り、或いはリード線部と発熱部との接続部に断線
を生じ易くなる等種々の不都合があつた。また、
実公昭57−41995号に示されるように、交流通電
一次導体の外周に磁性管を配置して、この管を発
熱させるものが知られているが、可撓性が無く、
布設自由度が小さかつた。
Electrical heating elements usually have a linear or planar shape, and the current-carrying part itself generates heat, so repeated heating and cooling may reduce the diameter and change the amount of heat generated, or the lead wire part and the heating part may There were various inconveniences, such as the possibility of wire breakage occurring at the connection part. Also,
As shown in Utility Model Publication No. 57-41995, it is known that a magnetic tube is placed around the outer periphery of an AC current-carrying primary conductor and this tube generates heat, but it is not flexible and
The degree of freedom in installation was small.
そこでこの考案は、通電部がほとんど発熱する
ことの無い可撓性発熱ケーブルを提供することを
目的とする。
Therefore, the object of this invention is to provide a flexible heat-generating cable whose current-carrying portion hardly generates heat.
このため、この考案によれば、交流電流が通電
される中心導体と、この中心導体の外周に設けら
れる耐熱絶縁材と、この耐熱絶縁材の外周に設け
られる可撓性磁性金属箔からなる外部発熱導体
と、この外部発熱導体の外周に設けられる耐熱絶
縁被覆とを備える同軸発熱ケーブルを構成する。
For this reason, according to this invention, an external structure is made up of a central conductor through which alternating current is passed, a heat-resistant insulating material provided around the outer periphery of this central conductor, and a flexible magnetic metal foil provided around the outer periphery of this heat-resistant insulating material. A coaxial heating cable includes a heating conductor and a heat-resistant insulating coating provided around the outer periphery of the external heating conductor.
この考案による同軸発熱ケーブルによれば、中
心導体に交流電流が流れると、外部発熱導体部に
磁束が生じ、この磁束と鎖交する渦電流が流れる
ことによつて外部発熱導体が加熱される。
According to the coaxial heating cable according to this invention, when an alternating current flows through the center conductor, a magnetic flux is generated in the external heating conductor portion, and an eddy current interlinking with this magnetic flux flows, thereby heating the external heating conductor.
その結果中心導体はほとんど加熱されず外部発
熱導体が主に加熱される。 As a result, the central conductor is hardly heated, and the external heating conductor is mainly heated.
又、発熱導体は可撓性であるので、全体として
可撓性に富む発熱ケーブルとなり、布設自由度が
高まる。 Furthermore, since the heating conductor is flexible, the heating cable as a whole is highly flexible, increasing the degree of freedom in installation.
第１図はこの考案による同軸発熱ケーブル１の
端部斜視図である。この同軸発熱ケーブル１は、
中心導体２の外周に、耐熱絶縁材３を施し、この
耐熱絶縁材３の外周に、鉄等の磁性導電体からな
る金属箔製外部発熱導体４を設けて形成される。
更にこの外部発熱導体４の外周には、充実質の、
或いは微細気孔や貫通打抜孔等を設けた多孔状等
の耐熱絶縁被覆５を設けることができる。
FIG. 1 is a perspective view of the end of a coaxial heating cable 1 according to this invention. This coaxial heating cable 1 is
A heat-resistant insulating material 3 is applied to the outer periphery of the center conductor 2, and an external heating conductor 4 made of metal foil made of a magnetic conductor such as iron is provided on the outer periphery of the heat-resistant insulating material 3.
Furthermore, on the outer periphery of this external heating conductor 4, a solid material is provided.
Alternatively, a porous heat-resistant insulating coating 5 having fine pores, punched through holes, etc. can be provided.
このように形成された同軸発熱ケーブル１は、
第２図に概念図を示すように、所要部に布設後交
流電源６に接続し、中心導体２に交流電流が流通
せしめられる。すると、外部発熱導体４は誘導加
熱される。加熱量は、中心導体２を流れる電流量
と周波数に依存して、主に周波数の増加に伴つて
増大する。 The coaxial heating cable 1 formed in this way is
As shown in a conceptual diagram in FIG. 2, after being installed at the required locations, it is connected to an AC power source 6, and an AC current is caused to flow through the center conductor 2. Then, the external heating conductor 4 is heated by induction. The amount of heating depends on the amount of current flowing through the center conductor 2 and the frequency, and mainly increases as the frequency increases.
中心導体２と外部発熱導体４との間に配置する
耐熱絶縁材３として、例えば物理的、化学的に安
定な四弗化エチレン樹脂を用いれば、それ自体長
寿命であり良く中心導体４を保護できる。 For example, if physically and chemically stable tetrafluoroethylene resin is used as the heat-resistant insulating material 3 placed between the center conductor 2 and the external heating conductor 4, it will have a long life and protect the center conductor 4 well. can.
以上の通りこの考案によれば、交流電流が通電
される中心導体と、この中心導体の外周に設けら
れる耐熱絶縁材と、この耐熱絶縁材の外周に設け
られる可撓性磁性金属箔からなる外部発熱導体
と、この外部発熱導体の外周に設けられる耐熱絶
縁被覆とを備える同軸発熱ケーブルを構成するこ
とにより、外部発熱導体のみが加熱され、電流が
通る中心導体は発熱部分から絶縁材を介して隔絶
されているので極めて長寿命で安定なものとなる
ばかりか、電源周波数等を調節することにより発
熱量を任意に制御できる発熱ケーブルを提供で
き、実用上の効果大なるものがある。
As described above, according to this invention, an external structure is made up of a central conductor through which an alternating current is passed, a heat-resistant insulating material provided around the outer periphery of this central conductor, and a flexible magnetic metal foil provided around the outer periphery of this heat-resistant insulating material. By configuring a coaxial heating cable that includes a heating conductor and a heat-resistant insulating coating provided around the outer periphery of the external heating conductor, only the external heating conductor is heated, and the central conductor through which current flows is heated from the heating part through the insulating material. Since it is isolated, it not only has an extremely long life and is stable, but also provides a heat generating cable that can arbitrarily control the amount of heat generated by adjusting the power frequency etc., which has great practical effects.
又、可撓性発熱ケーブルが得られるため、被加
熱物に沿つて自由に布設できるものとなる。 Furthermore, since a flexible heating cable is obtained, it can be freely laid along the object to be heated.
第１図はこの考案の一実施例による同軸発熱ケ
ーブルの端部斜視説明図、第２図はこの考案によ
る発熱ケーブルの運転概念を示す説明図である。
１……同軸発熱ケーブル、２……中心導体、３
……耐熱絶縁材料、４……外部発熱導体、５……
耐熱絶縁被覆、６……交流電源。
FIG. 1 is an explanatory perspective view of the end of a coaxial heating cable according to an embodiment of this invention, and FIG. 2 is an explanatory diagram showing the concept of operation of the heating cable according to this invention. 1... Coaxial heating cable, 2... Center conductor, 3
...Heat-resistant insulating material, 4...External heating conductor, 5...
Heat-resistant insulation coating, 6...AC power supply.
Claims (1)
体の外周に設けられる耐熱絶縁材と、この耐熱絶
縁材の外周に設けられる可撓性磁性金属箔からな
る外部発熱導体と、この外部発熱導体の外周に設
けられる耐熱絶縁被覆とを備える同軸発熱ケーブ
ル。 A central conductor to which an alternating current is applied, a heat-resistant insulating material provided around the outer periphery of this central conductor, an external heating conductor made of flexible magnetic metal foil provided around the outer periphery of this heat-resistant insulating material, and a A coaxial heating cable comprising a heat-resistant insulation coating provided on the outer periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12962885U JPH0120791Y2 (en) | 1985-08-26 | 1985-08-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12962885U JPH0120791Y2 (en) | 1985-08-26 | 1985-08-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6237193U JPS6237193U (en) | 1987-03-05 |
| JPH0120791Y2 true JPH0120791Y2 (en) | 1989-06-22 |
Family
ID=31026365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12962885U Expired JPH0120791Y2 (en) | 1985-08-26 | 1985-08-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0120791Y2 (en) |
-
1985
- 1985-08-26 JP JP12962885U patent/JPH0120791Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6237193U (en) | 1987-03-05 |
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