JPH04112506A - Heat-resistant inorganic insulated coil - Google Patents
Heat-resistant inorganic insulated coilInfo
- Publication number
- JPH04112506A JPH04112506A JP23182790A JP23182790A JPH04112506A JP H04112506 A JPH04112506 A JP H04112506A JP 23182790 A JP23182790 A JP 23182790A JP 23182790 A JP23182790 A JP 23182790A JP H04112506 A JPH04112506 A JP H04112506A
- Authority
- JP
- Japan
- Prior art keywords
- inorganic
- inorganic insulating
- heat
- coil
- ceramic particles
- 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
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 16
- LTPBRCUWZOMYOC-UHFFFAOYSA-N Beryllium oxide Chemical compound O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims abstract description 7
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims abstract description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 7
- 239000006185 dispersion Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000012700 ceramic precursor Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 150000004703 alkoxides Chemical class 0.000 claims description 2
- 125000003262 carboxylic acid ester group Chemical class [H]C([H])([*:2])OC(=O)C([H])([H])[*:1] 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 238000006068 polycondensation reaction Methods 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 238000005979 thermal decomposition reaction Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229920006015 heat resistant resin Polymers 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- UQMOLLPKNHFRAC-UHFFFAOYSA-N tetrabutyl silicate Chemical compound CCCCO[Si](OCCCC)(OCCCC)OCCCC UQMOLLPKNHFRAC-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012702 metal oxide precursor Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- MYWQGROTKMBNKN-UHFFFAOYSA-N tributoxyalumane Chemical compound [Al+3].CCCC[O-].CCCC[O-].CCCC[O-] MYWQGROTKMBNKN-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、高真空中や高温中で使用される、モータ、
マニピュレータ、およびソレノイドコイル等に用いるこ
とのできるコイルに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to motors, motors, etc. used in high vacuum or high temperatures.
The present invention relates to a coil that can be used for a manipulator, a solenoid coil, and the like.
［従来の技術および発明が解決しようとする課題］従来
、コイル用巻線にはエナメル線が用いられ、巻線加工し
た後、振動等によってずれるのを防止するために有機材
料による含浸を行ない固定して用いていた。特に耐熱性
を要求されるような用途では、被覆材料にポリイミドの
ような耐熱性樹脂を使用していた。[Prior art and problems to be solved by the invention] Conventionally, enamelled wire has been used for coil winding, and after the wire is wound, it is impregnated with an organic material to prevent it from shifting due to vibrations, etc., and fixed. It was used as Particularly in applications where heat resistance is required, a heat-resistant resin such as polyimide has been used as the coating material.
しかしながら、ポリイミドのような耐熱性樹脂であって
も、その許容温度は高々３ｏｏ℃であり、それ以上の温
度で使用することはできない。また真空中で使用するよ
うな場合には、被覆材料の熱分解によるガス放出が問題
となるため使用できなかった。However, even with a heat-resistant resin such as polyimide, its permissible temperature is at most 300° C., and it cannot be used at temperatures higher than that. Further, when used in a vacuum, gas release due to thermal decomposition of the coating material poses a problem, so it could not be used.
有機材料の代わりに、無機材料を使用した耐熱性絶縁コ
イルも種々検討されてきているが、長期間の運転や過負
荷の運転の際に、自己発熱により、導体抵抗が上昇して
、さらに発熱が増加し、金属部品の強度低下や熱膨張が
問題となった。Various heat-resistant insulated coils using inorganic materials instead of organic materials have been studied, but during long-term operation or overload operation, conductor resistance increases due to self-heating, causing further heat generation. increased, causing problems such as a decrease in the strength of metal parts and thermal expansion.
この発明の目的は、このような従来の問題点を解消し、
絶縁材料が熱分解せず、また発熱により生じた熱を外部
に逃がしやすくすることによって温度上昇を抑制するこ
とのできる耐熱性無機絶縁コイルを提供することにある
。The purpose of this invention is to solve such conventional problems,
It is an object of the present invention to provide a heat-resistant inorganic insulated coil whose insulating material does not undergo thermal decomposition and which can suppress temperature rise by easily dissipating heat generated by heat generation to the outside.
［課題を解決するための手段］
この発明の耐熱無機絶縁コイルは、導体の外周面に無機
絶縁層を被覆した無機絶縁線材を巻線加工して形成した
ものであり、コイル状に巻かれた無機絶縁線材間に、ベ
リリア、炭化ケイ素および窒化アルミニウムからなる群
より選ばれる少なくとも１種のセラミックス粒子を含む
無機絶縁充填層が設けられていることを特徴としている
。[Means for Solving the Problems] The heat-resistant inorganic insulated coil of the present invention is formed by winding an inorganic insulated wire material with an inorganic insulating layer coated on the outer peripheral surface of a conductor. It is characterized in that an inorganic insulating filling layer containing at least one kind of ceramic particles selected from the group consisting of beryllia, silicon carbide, and aluminum nitride is provided between the inorganic insulating wires.
無機絶縁充填層は、たとえば、セラミックス前駆体を含
む溶液中にセラミックス粒子を分散させた分散液を無機
絶縁線材間に充填することによって形成することができ
る。セラミックス前駆体を含む溶液は、たとえば、金属
アルコキシドまたは金属カルボン酸エステルを加水分解
および縮重合反応させることによって調製することがで
きる。The inorganic insulating filling layer can be formed, for example, by filling between the inorganic insulating wires a dispersion in which ceramic particles are dispersed in a solution containing a ceramic precursor. A solution containing a ceramic precursor can be prepared, for example, by subjecting a metal alkoxide or metal carboxylic acid ester to a hydrolysis and polycondensation reaction.
このようなセラミックス前駆体としては、５１１Ａｌ、
Ｚｒ、ＴｉおよびＭｇの金属酸化物の前駆体がある。こ
のような前駆体溶液は、加熱によりセラミックス化して
無機絶縁充填層とすることが好ましく、これによりセラ
ミックス粒子が無機絶縁充填層中に強固に固定される。Such ceramic precursors include 511Al,
There are metal oxide precursors of Zr, Ti and Mg. It is preferable that such a precursor solution is turned into a ceramic by heating to form an inorganic insulating filling layer, whereby the ceramic particles are firmly fixed in the inorganic insulating filling layer.
この発明において、無機絶縁充填層中のセラミックス粒
子の含有量は、２０体積％〜９０体積％の範囲内である
ことが好ましい。２０体積％より含有量が少なくなると
、無機絶縁充填層の熱伝導性が低下し、９０体積％より
含有量が多くなると、セラミックス粒子を強固に固定す
ることが困難になる。In this invention, the content of ceramic particles in the inorganic insulating filled layer is preferably within the range of 20% by volume to 90% by volume. When the content is less than 20% by volume, the thermal conductivity of the inorganic insulating filled layer decreases, and when the content is more than 90% by volume, it becomes difficult to firmly fix the ceramic particles.
［発明の作用効果］
この発明の絶縁コイルは、導体のまわりの無機絶縁層お
よび無機絶縁線材間の無機絶縁充填層により絶縁されて
いるため、熱分解して絶縁特性が劣化するようなことは
ない。[Operations and Effects of the Invention] Since the insulated coil of the present invention is insulated by the inorganic insulating layer around the conductor and the inorganic insulating filling layer between the inorganic insulating wires, the insulating properties will not deteriorate due to thermal decomposition. do not have.
またこの発明の絶縁コイルでは、無機絶縁充填層中に、
熱伝導性の高いベリリア、炭化ケイ素または窒化アルミ
を含んでいるため、無機絶縁充填層の熱伝導性が優れて
いるため、発熱した熱を外部に発散しやすい。このため
温度上昇を抑制することができる。したがって、この発
明の絶縁コイルはモータ、マニピュレータ、およびソレ
ノイドコイル等のコイルに使用して、長期間の運転や過
負荷の運転の際の発熱に耐えることのできる耐熱性コイ
ルとすることができる。Further, in the insulated coil of the present invention, in the inorganic insulating filling layer,
Since it contains highly thermally conductive beryllia, silicon carbide, or aluminum nitride, the inorganic insulation filling layer has excellent thermal conductivity, making it easy to dissipate generated heat to the outside. Therefore, temperature rise can be suppressed. Therefore, the insulated coil of the present invention can be used for coils of motors, manipulators, solenoid coils, etc., and can be made into a heat-resistant coil that can withstand heat generation during long-term operation or overload operation.
Ｃ実施例］
第１図は、この発明に従う無機絶縁コイルを示す断面図
である。第１図を参照して、ボビン１のまわりには無機
絶縁線材２が巻線加工されコイル状にされている。無機
絶縁線材２の間には、無機絶縁充填層３が設けられてい
る。Example C] FIG. 1 is a sectional view showing an inorganic insulated coil according to the present invention. Referring to FIG. 1, an inorganic insulating wire 2 is wound around a bobbin 1 into a coil shape. An inorganic insulating filling layer 3 is provided between the inorganic insulating wires 2 .
第２図は、第１図に示す無機絶縁コイルの無機絶縁線材
２のまわりを示す拡大断面図である。第２図を参照して
、無機絶縁線材２は、導体５の外周面に無機絶縁層６を
被覆することにより形成されている。無機絶縁線材２の
まわりには、無機絶縁充填層３が設けられており、無機
絶縁充填層３には、セラミックス粒子４が分散されてい
る。FIG. 2 is an enlarged sectional view showing the area around the inorganic insulated wire 2 of the inorganic insulated coil shown in FIG. Referring to FIG. 2, the inorganic insulating wire 2 is formed by covering the outer peripheral surface of the conductor 5 with an inorganic insulating layer 6. An inorganic insulation filling layer 3 is provided around the inorganic insulation wire 2, and ceramic particles 4 are dispersed in the inorganic insulation filling layer 3.
第２図に示すように、この発明の無機絶縁コイルでは、
無機絶縁充填層中にセラミックス粒子が分散されており
、このセラミックス粒子が、ベリリア、炭化ケイ素およ
び窒化アルミニウムからなる群より選ばれるものである
ため、熱伝導性に優れており、自己発熱した熱が外部に
伝達され、温度上昇を抑制することができる。As shown in FIG. 2, the inorganic insulated coil of this invention has
Ceramic particles are dispersed in the inorganic insulating filling layer, and because these ceramic particles are selected from the group consisting of beryllia, silicon carbide, and aluminum nitride, they have excellent thermal conductivity and dissipate self-generated heat. The temperature is transmitted to the outside and temperature rise can be suppressed.
以下、この発明に従う具体例について説明する。Hereinafter, specific examples according to the present invention will be explained.
まず、以下の■〜■の方法で３種の無機絶縁線材を作製
した。First, three types of inorganic insulating wires were produced by the following methods (1) to (2).
■ 直径Ｑ、５ｍｍのアルミニウム線の表面を陽極酸化
し、厚さ１０μｍの酸化層を形成してアルマイト電線を
作製した。(2) The surface of an aluminum wire with a diameter Q of 5 mm was anodized to form an oxide layer with a thickness of 10 μm to produce an alumite electric wire.
■ 直径０．５ｍｍのＮｉメツキＣｕ線に、加熱により
セラミックス化するシリコン樹脂を塗布し、これを焼き
付けてセラミックス電線を作製した。(2) A silicone resin that turns into a ceramic by heating was applied to a Ni-plated Cu wire with a diameter of 0.5 mm, and this was baked to produce a ceramic electric wire.
■ テトラブチルオルトシリケイトを８モル％、水を３
２モル％、イソプロピルアルコールを６０モル％含む混
合溶液に、硝酸をテトラブチルオルトシリケイトのモル
数に対して１００分の３の量だけ滴下して、８０℃にお
いて２時間反応させた。■ 8 mol% of tetrabutyl orthosilicate, 3% of water
To a mixed solution containing 2 mol % and 60 mol % of isopropyl alcohol, nitric acid was added dropwise in an amount of 3/100 based on the number of moles of tetrabutyl orthosilicate, and the mixture was reacted at 80° C. for 2 hours.
直径０．５ｍｍのＮ１メツキＣｕ線に酸化クロムメツキ
した後、この溶液をこの表面に塗布し、加熱処理してセ
ラミックス電線を作製した。After a N1-plated Cu wire with a diameter of 0.5 mm was plated with chromium oxide, this solution was applied to the surface and heat treated to produce a ceramic electric wire.
以上のようにして得られた３種類の無機絶縁線材をコイ
ル状に巻線加工する際に、下記のセラミックス粒子を分
散した分散液を充填しながら巻線加工した。When winding the three types of inorganic insulating wires obtained as described above into coil shapes, the wires were wound while being filled with a dispersion liquid in which the following ceramic particles were dispersed.
（イ） 上記■で調製した溶液に炭化ケイ素８００ｇを
分散した分散液。(a) A dispersion liquid in which 800 g of silicon carbide was dispersed in the solution prepared in (1) above.
（ロ） トリブトキシアルミニウムを５モル％、トリ
エタノールアミン１０モル％、水を５モル％、イソプロ
ピルアルコールを８０モル％含む混合溶液を、５０℃に
おいて１時間反応させ、この溶液ＩＬに窒化アルミニウ
ム粉末１ｋｇを分散した分散液。(b) A mixed solution containing 5 mol% of tributoxyaluminum, 10 mol% of triethanolamine, 5 mol% of water, and 80 mol% of isopropyl alcohol was reacted at 50°C for 1 hour, and aluminum nitride powder was added to this solution IL. Dispersion liquid containing 1 kg.
上記の■〜■の３種類の無機絶縁線材を用い、上記の（
イ）および（ロ）の分散液を用いて作製した合計６種類
の無機絶縁コイルについて、巻線加工後に５００℃で３
０分加熱しセラミックス化させ、この発明に従う無機絶
縁コイルとした。これらのコイルを用いて、過電流を流
して長時間使用したが何ら問題はなかった。比較として
、ポリイミドを用いて作ったソレノイドコイルに同じ条
件で過電流を流して長時間使用したところ、このコイル
はすぐに煙を上げて故障した。Using the above three types of inorganic insulated wires from ■ to ■,
A total of 6 types of inorganic insulated coils produced using the dispersion liquids (a) and (b) were tested at 500°C after winding.
The coil was heated for 0 minutes to form a ceramic, thereby producing an inorganic insulated coil according to the present invention. I used these coils for a long time with overcurrent flowing through them, but there were no problems. For comparison, when a solenoid coil made from polyimide was used for a long period of time under the same conditions with an overcurrent applied to it, the coil immediately emitted smoke and broke down.
このことからも明らかなように、この発明に従う無機絶
縁コイルは、耐熱性に優れている。As is clear from this, the inorganic insulated coil according to the present invention has excellent heat resistance.
なお、上記の実施例において、無機絶縁充填層は加熱に
よりセラミックス化させているが、この加熱を通電の際
の発熱により行ないセラミックス化させてもよい。In the above embodiments, the inorganic insulating filling layer is made into ceramic by heating, but it may also be made into ceramic by heating by generating heat during energization.
第１図は、この発明に従う無機絶縁コイルを示す断面図
である。
第２図は、第１図に示す無機絶縁コイルの無機絶縁線材
のまわりを示す拡大断面図である。
図において、１はボビン、２は無機絶縁線材、３は無機
絶縁充填層、４はセラミックス粒子、５は導体、６は無
機絶縁層を示す。
第１図
第２図FIG. 1 is a sectional view showing an inorganic insulated coil according to the present invention. FIG. 2 is an enlarged sectional view showing the area around the inorganic insulated wire of the inorganic insulated coil shown in FIG. In the figure, 1 is a bobbin, 2 is an inorganic insulating wire, 3 is an inorganic insulating filling layer, 4 is a ceramic particle, 5 is a conductor, and 6 is an inorganic insulating layer. Figure 1 Figure 2
Claims (4)
材を巻線加工して形成した耐熱性無機絶縁コイルであっ
て、 コイル状に巻かれた前記無機絶縁線材間に、ベリリア、
炭化ケイ素および窒化アルミニウムからなる群より選ば
れる少なくとも１種のセラミックス粒子を含む無機絶縁
充填層が設けられている、耐熱性無機絶縁コイル。(1) A heat-resistant inorganic insulated coil formed by winding an inorganic insulated wire coated with an inorganic insulating layer on the outer peripheral surface of a conductor, wherein beryllia,
A heat-resistant inorganic insulated coil provided with an inorganic insulating filling layer containing at least one type of ceramic particles selected from the group consisting of silicon carbide and aluminum nitride.
クス粒子を分散させた分散液を前記無機絶縁線材間に充
填することによって、前記無機絶縁充填層が形成されて
いる、請求項１に記載の耐熱性無機絶縁コイル。(2) The heat resistant layer according to claim 1, wherein the inorganic insulating filled layer is formed by filling between the inorganic insulating wires a dispersion in which the ceramic particles are dispersed in a solution containing a ceramic precursor. Inorganic insulated coil.
キシドまたは金属カルボン酸エステルを加水分解および
縮重合反応させた溶液である、請求項２に記載の耐熱性
無機絶縁コイル。(3) The heat-resistant inorganic insulated coil according to claim 2, wherein the solution containing the ceramic precursor is a solution obtained by subjecting a metal alkoxide or a metal carboxylic acid ester to a hydrolysis and polycondensation reaction.
熱によりセラミックス化して形成したものである、請求
項２に記載の耐熱性無機絶縁コイル。(4) The heat-resistant inorganic insulating coil according to claim 2, wherein the inorganic insulating filled layer is formed by heating the filled dispersion liquid to form a ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23182790A JPH04112506A (en) | 1990-09-01 | 1990-09-01 | Heat-resistant inorganic insulated coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23182790A JPH04112506A (en) | 1990-09-01 | 1990-09-01 | Heat-resistant inorganic insulated coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04112506A true JPH04112506A (en) | 1992-04-14 |
Family
ID=16929642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23182790A Pending JPH04112506A (en) | 1990-09-01 | 1990-09-01 | Heat-resistant inorganic insulated coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04112506A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004193398A (en) * | 2002-12-12 | 2004-07-08 | Tokyo Seiden Kk | Reactor apparatus |
-
1990
- 1990-09-01 JP JP23182790A patent/JPH04112506A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004193398A (en) * | 2002-12-12 | 2004-07-08 | Tokyo Seiden Kk | Reactor apparatus |
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