JPS62193081A - Manufacture of sheathed heater - Google Patents
Manufacture of sheathed heaterInfo
- Publication number
- JPS62193081A JPS62193081A JP3450986A JP3450986A JPS62193081A JP S62193081 A JPS62193081 A JP S62193081A JP 3450986 A JP3450986 A JP 3450986A JP 3450986 A JP3450986 A JP 3450986A JP S62193081 A JPS62193081 A JP S62193081A
- Authority
- JP
- Japan
- Prior art keywords
- sheathed heater
- sealing material
- metal pipe
- sheathed
- silicone resin
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000003566 sealing material Substances 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 229920002050 silicone resin Polymers 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 239000012784 inorganic fiber Substances 0.000 claims description 8
- 229920002545 silicone oil Polymers 0.000 claims description 8
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000000395 magnesium oxide Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 239000000123 paper Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000002940 repellent Effects 0.000 description 5
- 239000005871 repellent Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Landscapes
- Resistance Heating (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、一般調理器具や暖房器具などの加熱源として
広く使用されているシーズヒータに関し、特にシリコー
ン樹脂を添加した耐湿特性に優れたシーズヒータの製造
方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sheathed heater that is widely used as a heating source for general cooking utensils, heating appliances, etc., and particularly to a sheathed heater that has excellent moisture resistance and is added with silicone resin. This relates to a manufacturing method.
２ 、−
従来の技術
従来よりシーズヒータは簡便であるとともに、安全性が
高く、かつ耐蝕性に優れているため、各種製品の加熱源
として幅広く使用されている。2. - Prior Art Conventionally, sheathed heaters have been widely used as a heating source for various products because they are simple, highly safe, and have excellent corrosion resistance.
中でも、電気絶縁粉末として、シリコーン樹脂を添加し
たマグネシア粉末を用いたものは、金属パイプの端末部
の封止を特に行わなくても、多湿雰囲気下で優れた電気
特性を示すため、炊飯器やアイロン、ホットプレート等
、特に安全性が必要とされる一般家庭用電化製品の加熱
源として使用されている。Among them, those using magnesia powder added with silicone resin as electrical insulating powder exhibit excellent electrical properties in a humid atmosphere without special sealing of the end of the metal pipe, so it is suitable for rice cookers and other applications. It is used as a heating source for general household appliances that require particular safety, such as irons and hot plates.
この種のシーズヒータは、両端に端子棒を備えたコイル
状の電熱線を極低炭素鋼またはアルミニウムからなる金
属パイプの中央部に挿入し、かつこの金属パイプ内に、
シリコーン樹脂を添加したマグネシア粉末からなる電気
絶縁粉末を充填し、そして金属パイプの端末部をボール
紙からなるシーズヒータ用封止材で封止し、この後圧延
減径し、最後に、シリコーン樹脂による撥水化処理を行
うため、２ｏｏ〜３００°Ｃの熱処理を行って製造さ３
Ｉ＼−
れる。In this type of sheathed heater, a coiled heating wire with terminal bars at both ends is inserted into the center of a metal pipe made of ultra-low carbon steel or aluminum, and inside this metal pipe,
Electrical insulation powder made of magnesia powder added with silicone resin is filled, and the end of the metal pipe is sealed with a sheathed heater sealing material made of cardboard. After this, the diameter is reduced by rolling, and finally, the silicone resin In order to make water repellent by
I\- I can do it.
発明が解決しようとする問題点
しかしながら、前述の目的で熱処理を行った場合、シー
ズヒータ用封止材として使用したボール紙の炭化現象が
起こり、金属パイプと電熱線との間の電気特性が著しく
低下するという問題が生じ、わざわざ熱処理後、エアー
ブロー等の方法で、炭化したシーズヒータ用封止材を除
去しているのが実情であり、非常にやっかい々ものであ
った。Problems to be Solved by the Invention However, when heat treatment is performed for the above-mentioned purpose, the cardboard used as the sealing material for the sheathed heater will carbonize, and the electrical characteristics between the metal pipe and the heating wire will significantly deteriorate. In reality, the carbonized sealing material for a sheathed heater is removed by a method such as air blowing after heat treatment, which is very troublesome.
本発明は上記の問題点に鑑み、２００〜３００°Ｃの撥
水化処理の熱処理後、特にシーズヒータ用封止材の除去
を行う必要のないシーズヒータの製造方法を提供するこ
とを目的とするものである。In view of the above-mentioned problems, an object of the present invention is to provide a method for manufacturing a sheathed heater that does not require removing the sealing material for the sheathed heater after heat treatment for water repellency treatment at 200 to 300°C. It is something to do.
問題点を解決するための手段
上記問題点′ｆｆ：解決するために本発明は、極低炭素
鋼またはアルミニウムからなり、かつ電熱線を挿入した
金属パイプ内に、シリコーン樹脂を添加したマグネシア
粉末からなる電気絶縁粉末を充填し、かつアルミナ繊維
またはシリカ繊維を主成分とする無機質繊維紙からなる
シーズヒータ用封止材を用いて金属パイプの端末部を封
止し、続いて圧延減径を行うとともに、所定の形状に曲
げ加工し、さらに最終工程において前記シーズヒータ用
封止材にシリコーンオイルを滴下させるようにしたもの
である。Means for Solving the Problems The above problems 'ff': In order to solve the above problems, the present invention provides a metal pipe made of ultra-low carbon steel or aluminum, into which a heating wire is inserted, made of magnesia powder added with silicone resin. The end of the metal pipe is sealed using a sheathed heater sealing material filled with electrically insulating powder and made of inorganic fiber paper mainly composed of alumina fiber or silica fiber, and then rolled to reduce its diameter. At the same time, it is bent into a predetermined shape, and in the final step, silicone oil is dripped onto the sheathed heater sealing material.
作 用
従来よりシーズヒータ用封止材として使用されているボ
ール紙の主成分はわらであり、２００〜３００°Ｃでの
大気中雰囲気で行なう撥水化処理では、完全に酸化され
ずに炭化現象が起こり電気特性に悪影響を与える。The main component of cardboard, which has traditionally been used as a sealing material for sheathed heaters, is straw, and when water repellent treatment is carried out in the air at 200 to 300°C, it is completely carbonized without being oxidized. phenomenon occurs, which adversely affects electrical characteristics.
しかるに本発明では、シーズヒータ用封止材がアルミナ
繊維またはシリカ繊維を主成分とする無機物で構成され
ているため、前述した熱処理条件下において容易に炭化
されることはない。However, in the present invention, since the sheathed heater sealing material is composed of an inorganic material whose main component is alumina fiber or silica fiber, it is not easily carbonized under the heat treatment conditions described above.
また、結合材として少量含捷れる有機物が炭化されても
、この有機物の含有量は従来のシーズヒータ用封止材で
あるボール紙に比較して著しく少ないため、電気特性の
低下現象は見られない。In addition, even if a small amount of organic matter is carbonized as a binder, the content of this organic matter is significantly lower than that of cardboard, which is a conventional sealing material for sheathed heaters, so no deterioration in electrical properties is observed. do not have.
さらに、前記無機質繊維紙には、最終工程で耐６ ヘー
／
熱性に優れたシリコーンオイルを滴下させるようにして
いるため、撥水化処理の熱処理後、多湿雰囲気中に放置
されても電気特性が損なわれることはない。Furthermore, in the final process, silicone oil with excellent heat resistance and heat resistance is dripped onto the inorganic fiber paper. It will not be damaged.
なお、本発明では、金属パイプとして、加工硬化の起こ
９にくい極低炭素鋼、またはアルミニウムを使用してい
るため、電気絶縁粉末に含有されるシリコーン樹脂や、
無機質繊維紙に含浸されるシリコーンオイルが劣化する
ような高い温度での熱処理を必要とせず、自由に曲げ加
工ができる０このような理由により、本発明では、２０
０〜３ｏ○°Ｃの撥水化処理の熱処理後、特にシーズヒ
ータ用封止材の除去を行う必要がないシーズヒータの製
造方法を提供することができる。In addition, in the present invention, since ultra-low carbon steel or aluminum, which is resistant to work hardening, is used as the metal pipe, silicone resin contained in the electrical insulating powder,
There is no need for heat treatment at high temperatures that would degrade the silicone oil impregnated into the inorganic fiber paper, and the material can be bent freely.For these reasons, in the present invention, 20
It is possible to provide a method for manufacturing a sheathed heater in which there is no need to particularly remove the sealing material for a sheathed heater after heat treatment for water repellency treatment at 0 to 3°C.
実施例
以下、本発明の一実施例を第１図〜第３図にもとづいて
説明する。EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.
まず、両端に端子棒１を備えたコイル状のニクロム線か
らなる電熱線２を準備し、この電熱線２を極低炭素鋼か
らなる金属パイプ３の中央部に挿６ ・・−１
入し、そしてシリコーン樹脂を添加したマグネシア粉末
からなる電気絶縁粉末４を充填した。First, prepare a heating wire 2 made of a coiled nichrome wire with terminal rods 1 at both ends, and insert this heating wire 2 into the center of a metal pipe 3 made of ultra-low carbon steel. , and was filled with electrical insulating powder 4 made of magnesia powder to which silicone resin was added.
そしてこの充填完了後、第１図および第２図に示すアル
ミナ繊維を主成分とする無機質繊維紙からなるシーズヒ
ータ用封止材６を用いて金属パイプ３の端部を封止する
とともに、圧延減径した。After this filling is completed, the end of the metal pipe 3 is sealed using a sheathed heater sealing material 6 made of inorganic fiber paper mainly composed of alumina fibers as shown in FIGS. The diameter was reduced.
この後、２５０°Ｃで１時間の撥水化処理を行い、そし
て最終工程において、シリコーンオイルをシーズヒータ
用封止材５に数滴滴下して第３図に示す本発明のシーズ
ヒータを５本完成し、その試料番号を６＝１０とした。Thereafter, a water repellent treatment was performed at 250°C for 1 hour, and in the final step, several drops of silicone oil were dropped on the sheathed heater sealing material 5 to form the sheathed heater of the present invention as shown in FIG. The book was completed and the sample number was set to 6=10.
一方、比較のために従来のボール紙からなるシーズヒー
タ用封止材６を用い、同様にしてシーズヒータを６本完
成し、その試料番号を１〜５とした０
なお、この場合、ボール紙からなるシーズヒータ用封止
材５は、２６０°Ｃで１時間の撥水化処理による熱処理
をした後、特にエアーブロー等による除去は行われなか
ったＯ
そして完成したそれぞれのシーズヒータの完成７１・−
初期の電気特性を測定し、その測定結果を表に示した。On the other hand, for comparison, six sheathed heaters were completed in the same manner using the conventional sealing material 6 for sheathed heaters made of cardboard, and the sample numbers were 1 to 5. The sealing material 5 for a sheathed heater consisting of was heat-treated by water repellent treatment at 260°C for 1 hour, and was not particularly removed by air blowing. - The initial electrical characteristics were measured and the measurement results are shown in the table.
また、耐湿特性を評価するため、４０°Ｃで相対湿度９
５係の雰囲気中に２週間投入し、この時の絶縁抵抗を測
定し、その測定結果も同様に次表に示した。In addition, in order to evaluate the moisture resistance characteristics, the relative humidity was 9 at 40°C.
The insulation resistance at this time was measured after being placed in the atmosphere of Section 5 for two weeks, and the measurement results are also shown in the following table.
（ニス下凛白）
９ ヘ一／゛
」二記表から明らかなように、従来のボール紙からなる
シーズヒータ用封止材５を使用した試料番号１〜５の従
来のシーズヒータでは、完成初期の耐電圧は、１ｏｏＱ
■以下、また絶縁抵抗は２００ＭΩ以下であり、このま
までは実使用に耐えられず、撥水化処理の前か後の工程
において、使用したシーズヒータ用封止材６の除去が必
要であった。(Rin white under varnish) 9 As is clear from the table 2, the conventional sheathed heaters of sample numbers 1 to 5 using the conventional sheathed heater sealing material 5 made of cardboard cannot be completed. The initial withstand voltage is 1ooQ
(2) Also, the insulation resistance was 200 MΩ or less, and it could not withstand actual use as it was, and it was necessary to remove the used sealing material 6 for the sheathed heater in a process before or after the water repellent treatment.
また、耐湿特性においてもすべて１ＭΩ以下であシ、問
題があった。In addition, there was a problem in terms of moisture resistance as all of them were 1 MΩ or less.
しかるに、最終工程で、アルミナ繊維紙を主成分とする
無機質繊維紙からなるシーズヒータ用封止材５にシリコ
ーンオイルを滴下させた試料番号６〜１０の本発明のシ
ーズヒータでは、完成初期の耐電圧が２６００ｖ以上、
また絶縁抵抗は２０ｏＯＭΩ以上あり、非常に優れた電
気特性を示した。However, in the sheathed heaters of the present invention of sample numbers 6 to 10, in which silicone oil was dripped onto the sheathed heater sealing material 5 made of inorganic fiber paper mainly composed of alumina fiber paper in the final step, the durability at the initial stage of completion was low. Voltage is 2600v or more,
In addition, the insulation resistance was 20 oOMΩ or more, indicating very excellent electrical properties.
さらに、耐湿特性においても、すべて２０００ＭΩ以上
の優れた絶縁抵抗を示した。Furthermore, in terms of moisture resistance, all exhibited excellent insulation resistance of 2000 MΩ or more.
このように、最終工程に、シリコーンオイルをアルミナ
繊維を主成分とする無機質繊維紙からなるシーズヒータ
用封止材已に滴下させることによ１Ｑ ・・−１
ｐ、２００〜３００′Ｃの撥水化処理による熱処理をし
た後、特にシーズヒータ用封止材６の除去を行わなくて
も、電気特性および耐湿特性に優れたシーズヒータを製
造することができる。In this way, in the final step, by dropping silicone oil on the sealing material for sheathed heaters made of inorganic fiber paper mainly composed of alumina fibers, repellency of 1Q...-1p, 200 to 300'C is achieved. After heat treatment by hydration treatment, a sheathed heater with excellent electrical properties and moisture resistance can be manufactured without particularly removing the sheathed heater sealing material 6.
なお、本発明の実施例においては、無機質繊維紙として
アルミナ繊維を主成分とするものを使用したが、特にこ
れに限定されるものではなく、他のシリカ繊維または両
者の繊維を主成分とするものでもよい。In the examples of the present invention, inorganic fiber paper containing alumina fiber as the main component was used, but the present invention is not limited to this, and other silica fibers or fibers of both types may be used as the main component. It can be anything.
また、金属パイプ３は極低炭素鋼を使用したが、他のア
ルミニウムや加工硬化を起こしにくい材料でも構成する
ことができ、さらには加工硬化を起こす材料であっても
、後工程において曲げ加工を行わないものについては応
用できるものである。In addition, although the metal pipe 3 is made of ultra-low carbon steel, it can also be made of other aluminum or other materials that do not easily cause work hardening, and even if the material is work hardened, it can be bent in the subsequent process. Those that are not implemented can be applied.
発明の効果
以上の説明から明らかなように、本発明によれば、極低
炭素鋼またはアルミニウムからなる金属パイプ内に、シ
リコーン樹脂を添加したマグネシア粉末からなる電気絶
縁粉末を充填し、かつアルミナ繊維またはシリカ繊維を
主成分とする無機質１１ ヘ一／
繊維紙からなるシーズヒータ用封止材を用いて金属パイ
プの端末部を封止し、続いて圧延減径を行うとともに、
所定の形状に曲げ加工し、さらに最終工程において前記
シーズヒータ用封止材にシリコーンオイルを滴下させる
ようにしているため、２００〜３００″Ｃの撥水化処理
による熱処理をした後、特にシーズヒータ用封止材の除
去を行う必要がないシーズヒータの製造方法を提供する
ことができる。Effects of the Invention As is clear from the above description, according to the present invention, a metal pipe made of ultra-low carbon steel or aluminum is filled with electrical insulating powder made of magnesia powder added with silicone resin, and alumina fiber Alternatively, the end portion of the metal pipe is sealed using a sheathed heater sealing material made of fiber paper, and then the diameter is reduced by rolling.
Since the sealing material for the sheathed heater is bent into a predetermined shape and silicone oil is dripped onto the sealing material for the sheathed heater in the final process, the sealing material for the sheathed heater is It is possible to provide a method for manufacturing a sheathed heater that does not require removal of the sealing material.
第１図は本発明の一実施例において使用するシーズヒー
タ用封止材の正面図、第２図は同シーズヒータ用封止材
の断面図、第３図は本発明の一実施例を示すシーズヒー
タの断面図である。
２・・・・・・電熱線、３・・・・・・金属パイプ、４
・・・・・・電気絶縁粉末、５・・・・・・シーズヒー
タ用封止材。FIG. 1 is a front view of a sealing material for a sheathed heater used in an embodiment of the present invention, FIG. 2 is a sectional view of the sealing material for a sheathed heater, and FIG. 3 is a diagram showing an embodiment of the present invention. It is a sectional view of a sheathed heater. 2...Heating wire, 3...Metal pipe, 4
...Electrical insulating powder, 5... Sealing material for sheathed heaters.
Claims (1)
挿入した金属パイプ内に、シリコーン樹脂を添加したマ
グネシア粉末からなる電気絶縁粉末を充填し、かつアル
ミナ繊維またはシリカ繊維を主成分とする無機質繊維紙
からなるシーズヒータ用封止材を用いて金属パイプの端
末部を封止し、続いて圧延減径を行うとともに、所定の
形状に曲げ加工し、さらに最終工程において前記シーズ
ヒータ用封止材にシリコーンオイルを滴下させたことを
特徴とするシーズヒータの製造方法。An inorganic fiber paper whose main component is alumina fiber or silica fiber, which is filled with electrically insulating powder made of magnesia powder with silicone resin added into a metal pipe made of ultra-low carbon steel or aluminum and into which a heating wire is inserted. The end of the metal pipe is sealed using the sealing material for sheathed heaters, which is then rolled to reduce its diameter and bent into a predetermined shape. A method for manufacturing a sheathed heater characterized by dropping silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3450986A JPS62193081A (en) | 1986-02-18 | 1986-02-18 | Manufacture of sheathed heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3450986A JPS62193081A (en) | 1986-02-18 | 1986-02-18 | Manufacture of sheathed heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62193081A true JPS62193081A (en) | 1987-08-24 |
Family
ID=12416228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3450986A Pending JPS62193081A (en) | 1986-02-18 | 1986-02-18 | Manufacture of sheathed heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62193081A (en) |
-
1986
- 1986-02-18 JP JP3450986A patent/JPS62193081A/en active Pending
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