JPS6241411B2 - - Google Patents
Info
- Publication number
- JPS6241411B2 JPS6241411B2 JP10205179A JP10205179A JPS6241411B2 JP S6241411 B2 JPS6241411 B2 JP S6241411B2 JP 10205179 A JP10205179 A JP 10205179A JP 10205179 A JP10205179 A JP 10205179A JP S6241411 B2 JPS6241411 B2 JP S6241411B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- resin
- impregnating
- impregnated
- resins
- 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
- 229920005989 resin Polymers 0.000 claims description 42
- 239000011347 resin Substances 0.000 claims description 42
- 238000000576 coating method Methods 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 238000005470 impregnation Methods 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 229920002050 silicone resin Polymers 0.000 description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229920006305 unsaturated polyester Polymers 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- ULKLGIFJWFIQFF-UHFFFAOYSA-N 5K8XI641G3 Chemical compound CCC1=NC=C(C)N1 ULKLGIFJWFIQFF-UHFFFAOYSA-N 0.000 description 1
- -1 BF 3 complexes Chemical class 0.000 description 1
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229940079865 intestinal antiinfectives imidazole derivative Drugs 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Description
【発明の詳細な説明】
この発明は、電気機器のコイルの絶縁処理方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for insulating coils of electrical equipment.
一般に鉄心とコイルからなる電気機器は、鉄心
とコイル間及びコイル単体に何等かの絶縁が施さ
れている。これらの絶縁に含浸樹脂がしばしば用
いられていることはよく知られている。含浸樹脂
は一般に可使時間が長く低粘度であり、コイルの
絶縁及び固着の目的で用いられる。コイルは単体
あるいは鉄心への組込み後に含浸処理が行われ
る。含浸樹脂としてはエポキシ樹脂、不飽和ポリ
エステル樹脂、シリコン樹脂、ウレタン樹脂など
が用いられるが、含浸樹脂の硬化時にしばしば含
浸樹脂が流出し、目的を十分達成できないことが
あり、種々の流出防止対策が施されている。ま
た、コイルの外被が必要な場合には、テーピング
やパテ処理などの複雑な作業が加わことになる
が、従来の流出防止対策は完全なものではなく、
テーピングやパテ処理も簡略化するのが難しい。 Generally, in electrical equipment consisting of an iron core and a coil, some kind of insulation is provided between the iron core and the coil and within the coil itself. It is well known that impregnated resins are often used for these insulations. Impregnating resins generally have a long pot life and low viscosity, and are used for the purpose of insulating and fixing coils. The coil is impregnated either individually or after being incorporated into the core. Epoxy resins, unsaturated polyester resins, silicone resins, urethane resins, etc. are used as impregnating resins, but when the impregnating resin is cured, the impregnating resin often leaks out, making it impossible to fully achieve the purpose, so various leakage prevention measures are required. It has been subjected. Additionally, if a coil outer sheath is required, complicated work such as taping and putty treatment will be required, but conventional leakage prevention measures are not perfect.
It is also difficult to simplify taping and putty processing.
そこで、これらの問題を解決するため鋭意研究
を重ねた結果、テーピング作業やパテ処理を行わ
なくとも完全に含浸絶縁できる新規なコイルの絶
縁処理方法を見い出した。 As a result of intensive research to solve these problems, we discovered a new coil insulation treatment method that allows complete impregnation insulation without the need for taping or putty treatment.
即ち、この発明によるコイルの絶縁処理方法
は、含浸樹脂の硬化剤または促進剤を溶解した媒
体中にコイルを浸漬し、乾燥した後、粉体塗装に
よりコイルの外側に塗膜を形成し、次いで含浸樹
脂をコイルに含浸させ、含浸樹脂中でコイル内の
含浸樹脂を固化させることを特徴とするものであ
る。換言すれば、粉体塗装によるコイル外側の塗
膜に必ずピンホールが多数形成されてコイル内の
空間が外部と連通している点がこの発明を完成す
る上での要点となる。 That is, the method for insulating a coil according to the present invention involves immersing the coil in a medium in which a curing agent or accelerator for the impregnated resin is dissolved, and after drying, forming a coating film on the outside of the coil by powder coating. This method is characterized by impregnating a coil with an impregnating resin and solidifying the impregnating resin inside the coil in the impregnating resin. In other words, the key point in completing this invention is that a large number of pinholes are always formed in the coating film on the outside of the coil by powder coating, so that the space inside the coil communicates with the outside.
含浸樹脂としては無溶剤形の一般のエポキシ樹
脂、不飽和ポリエステル樹脂、シリコン樹脂、ウ
レタン樹脂などを用いるが、これら樹脂の含浸前
にコイルには含浸樹脂の硬化剤または促進剤を付
着させてあるため、硬化剤、促進剤のない含浸樹
脂または硬化剤あるいは促進剤が最小限量の含浸
樹脂を用いてもよい。また、これらの含浸樹脂の
硬化剤または促進剤としては、エポキシ樹脂には
酸無水物、アミン類、BF3コンプレツクス、イミ
ダゾール誘導体など、不飽和ポリエステルには過
酸化物、アミン類など、シリコン樹脂及びウレタ
ン樹脂にも同様の公知の一般のものを用いる。硬
化剤または促進剤は有機溶剤または水に溶解させ
て用いる。 As the impregnating resin, solvent-free general epoxy resin, unsaturated polyester resin, silicone resin, urethane resin, etc. are used, but before impregnating with these resins, a curing agent or accelerator for the impregnating resin is attached to the coil. Therefore, an impregnating resin without a curing agent or accelerator or an impregnating resin containing a minimum amount of curing agent or accelerator may be used. In addition, curing agents or accelerators for these impregnated resins include acid anhydrides, amines, BF 3 complexes, imidazole derivatives, etc. for epoxy resins, peroxides, amines, etc. for unsaturated polyesters, and silicone resins. Also, the same known general resins are used for the urethane resin. The curing agent or accelerator is used after being dissolved in an organic solvent or water.
粉体塗装と粉体塗料は公知のものでよく、塗膜
は0.04〜３mmに形成する。望ましくは必要部分、
即ちコイルにのみ塗装するのがよい。 Powder coating and powder coating may be any known powder coating, and the coating film is formed to a thickness of 0.04 to 3 mm. Preferably the necessary parts,
In other words, it is better to paint only the coil.
一方、含浸樹脂中での含浸樹脂の固化は、コイ
ルの通電加熱が望ましく、含浸樹脂は冷却循環さ
せておくのが含浸樹脂の寿命を長くするために望
ましい。また、コイル内の含浸樹脂は、一般にゲ
ル化の時点でコイルを含浸樹脂中から取出し、こ
の後硬化させれば含浸樹脂の寿命の点で有利であ
る。含浸作業は、望ましくは真空含浸を行えばコ
イルの隅々まで完全に含浸できる。 On the other hand, it is desirable to solidify the impregnated resin in the impregnated resin by heating the impregnated resin by applying electricity to a coil, and to extend the life of the impregnated resin, it is desirable to cool and circulate the impregnated resin. Further, it is generally advantageous in terms of the lifespan of the impregnated resin if the coil is taken out from the impregnated resin at the time of gelation and then cured. The impregnation process is preferably carried out in a vacuum so that every corner of the coil can be completely impregnated.
この発明方法によりコイルの絶縁処理が行われ
ると、まずコイル内に含浸樹脂の硬化剤または促
進剤が付着される。このコイルへの粉体塗装によ
つて含浸樹脂の硬化剤または促進剤が外部と隔離
されるか、または接触しても最小限となる。粉体
塗装による塗膜にはコイルの加熱・冷却工程に伴
うコイル内の空気の膨張・収縮により必ず多数の
ピンホールが形成されるばかりでなく、コイルに
は一般に凹凸があり、均一にピンホールのない塗
膜を作ることはできない。この塗膜の多数のピン
ホールが含浸樹脂の含浸口となり、真空含浸によ
つてコイル内に完全に含浸樹脂が充填される。含
浸樹脂と硬化剤または促進剤とは粉体塗装塗膜に
より隔離されているため、含浸樹脂の寿命は損わ
れない。この含浸樹脂に浸漬された状態でコイル
を通電加熱すれば、コイル内の含浸樹脂と予めコ
イルに付着させておいた硬化剤または促進剤が接
触、拡散され、コイル内は速やかにゲル化または
硬化する。このコイル内の含浸樹脂が固化した状
態で大気中に取出し、通常の方法で熱硬化すれ
ば、コイル内の含浸樹脂は外部に流出せず、完全
に硬化する。このようにして絶縁処理されたコイ
ルは、外部に塗膜を有し、コイル内に完全に樹脂
が充填された良好な絶縁コイルとなる。 When a coil is insulated by the method of this invention, first a curing agent or an accelerator for the impregnating resin is deposited inside the coil. By powder coating the coil, the curing agent or accelerator of the impregnating resin is isolated from the outside or its contact is minimized. Not only are many pinholes always formed in the powder coating film due to the expansion and contraction of the air inside the coil during the heating and cooling process of the coil, but also the coils are generally uneven and the pinholes are distributed evenly. It is not possible to create a paint film without A large number of pinholes in this coating film serve as impregnation ports for the impregnated resin, and the coil is completely filled with the impregnated resin by vacuum impregnation. Since the impregnating resin and the curing agent or accelerator are separated by a powder coat coating, the life of the impregnating resin is not impaired. When the coil is immersed in this impregnated resin and heated with electricity, the impregnated resin inside the coil and the curing agent or accelerator that has been attached to the coil in advance come into contact and diffuse, and the inside of the coil quickly gels or hardens. do. If the impregnated resin in the coil is taken out into the atmosphere in a solidified state and thermally cured by a normal method, the impregnated resin in the coil will not flow out and will be completely cured. The coil insulated in this manner has a coating film on the outside and is a well-insulated coil with the inside of the coil completely filled with resin.
以下この本発明を実施例により詳細に説明す
る。 The present invention will be explained in detail below with reference to Examples.
実施例 １
回転機のステータ鉄心に１mmφのマグネツトワ
イヤがバラ巻きされたコイルを、２エチル４メチ
ルイミダゾールをメチルエチルケトンに溶解した
媒体中に浸漬し、大気中で乾燥後、コイルを通電
加熱し、エポキシ粉体塗料を流動浸漬塗装法でコ
イル外周に1.0〜1.5mmの塗膜を形成した。このス
テータを冷却循環されたエポキシ含浸樹脂中で真
空含浸し、浸漬した状態でコイルを通電加熱し、
エポキシ樹脂が固化した後、取出してオーブン中
で所定の硬化を行つた。Example 1 A coil in which 1 mm diameter magnet wire is loosely wound around the stator core of a rotating machine is immersed in a medium in which 2-ethyl-4-methylimidazole is dissolved in methyl ethyl ketone, and after drying in the atmosphere, the coil is heated with electricity. A coating film of 1.0 to 1.5 mm was formed on the outer periphery of the coil using epoxy powder coating using a fluidized dip coating method. This stator is vacuum impregnated in an epoxy impregnated resin that is cooled and circulated, and the coil is heated with electricity while it is immersed.
After the epoxy resin was solidified, it was taken out and cured in an oven.
実施例 ２
直線部をプリプレグ絶縁されたフオーミユドコ
イルを鉄心に組込み、コイルエンドを結線した
後、ジメチルアニリンをメチルエチルケトンに溶
解した媒体中にステータの両側のコイルエンドの
みを浸漬し、乾燥した。このコイルを通電加熱し
てエポキシ粉体塗料を静電スプレー塗装し、コイ
ルエンド部に0.2〜0.6mmの塗膜を形成した。この
ステータを冷却循環された不飽和ポリエステル含
浸樹脂中に浸漬して真空含浸した後、浸漬した状
態で通電加熱し、不飽和ポリエステルが固化した
状態で不飽和ポリエステル含浸樹脂より取出し、
オーブン中で所定の硬化を行つた。Example 2 A formed coil whose straight portions were insulated with prepreg was assembled into an iron core, and the coil ends were wired. Only the coil ends on both sides of the stator were immersed in a medium in which dimethylaniline was dissolved in methyl ethyl ketone and dried. This coil was heated with electricity and electrostatically sprayed with epoxy powder paint to form a coating film of 0.2 to 0.6 mm on the coil end. This stator is immersed in a cooled and circulated unsaturated polyester-impregnated resin for vacuum impregnation, then heated with electricity in the immersed state, and taken out from the unsaturated polyester-impregnated resin in a state in which the unsaturated polyester is solidified.
Predetermined curing was carried out in an oven.
以上のように絶縁処理されたコイルは、内部に
完全に樹脂が充填され、コイル外周には必要な粉
体塗装による塗膜が形成される。 The inside of the coil that has been insulated as described above is completely filled with resin, and the necessary powder coating is formed on the outer periphery of the coil.
Claims (1)
促進剤を溶解した媒体中に浸漬し、乾燥する第１
工程と、コイルを加熱して粉体塗装法でコイル表
面に塗膜を形成させる第２工程と、無溶剤形含浸
樹脂をコイルに真空含浸させる第３工程と、含浸
樹脂中でコイル内の含浸樹脂を固化させる第４工
程とからなることを特徴とするコイルの絶縁処理
方法。1. The first step is to immerse the coil of the electrical device in a medium in which the curing agent or accelerator of the impregnated resin is dissolved and dry it.
a second step of heating the coil to form a coating film on the coil surface using a powder coating method; a third step of vacuum impregnating the coil with a solvent-free impregnating resin; and impregnating the inside of the coil in the impregnating resin. A method for insulating a coil, comprising a fourth step of solidifying the resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10205179A JPS5626423A (en) | 1979-08-09 | 1979-08-09 | Insulating method for coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10205179A JPS5626423A (en) | 1979-08-09 | 1979-08-09 | Insulating method for coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5626423A JPS5626423A (en) | 1981-03-14 |
| JPS6241411B2 true JPS6241411B2 (en) | 1987-09-02 |
Family
ID=14316958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10205179A Granted JPS5626423A (en) | 1979-08-09 | 1979-08-09 | Insulating method for coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5626423A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA831964B (en) * | 1982-04-02 | 1984-11-28 | Flexibox Ltd | Mechanical seals |
| JPS60166369U (en) * | 1984-04-11 | 1985-11-05 | ジヤン−チヤウ オウ | Tennis racket wire tension adjustment device |
-
1979
- 1979-08-09 JP JP10205179A patent/JPS5626423A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5626423A (en) | 1981-03-14 |
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