JPS5818268Y2 - molded transformer - Google Patents

Description

【考案の詳細な説明】 この考案は屋外用モールド変圧器に関する。[Detailed explanation of the idea] This invention relates to an outdoor molded transformer.

従来のモールド変圧器では、コイルが耐水性絶縁物内に
モールドされているため雨水に耐えるが鉄心は防水され
ていないために雨水によって錆を生ずる恐れがある。In conventional molded transformers, the coils are molded within a water-resistant insulator so that they can withstand rainwater, but the iron core is not waterproof and can rust due to rainwater.

また、鉄心とコイルとの間およびコイル間の通風路に小
動物が侵入して通風路を塞ぎ、冷却を悪くしたり、絶縁
を破壊したりする恐れがある。In addition, small animals may enter the ventilation passages between the core and the coils and between the coils and block the ventilation passages, impairing cooling or breaking down the insulation.

したがって屋外では使用できないという欠点があった。Therefore, there was a drawback that it could not be used outdoors.

この考案は上記のような欠点を除去して屋外で使用でき
るモールド変圧器を提供することを目的とする。The purpose of this invention is to eliminate the above-mentioned drawbacks and provide a molded transformer that can be used outdoors.

この考案によれば上記の目的は、鉄心脚部にそれぞれ筒
状の絶縁物内にモールドされた各相のコイルをはめこん
だモールド変圧器において、最外周に位置する各相のそ
れぞれのコイルを一体の絶縁物内にモールドし、この一
体の絶縁物の上下の端部にそれぞれ上下に突出する周壁
を設け、上部継鉄を上方より覆いその端が雨水の浸入を
防ぐように前記上側の周壁に臨む上カバーを設け、上側
の周壁と上カバーとの間隙および下側の周壁と据付部と
の間隙に網を設けることによって達せられる。According to this invention, the above purpose was achieved in a molded transformer in which the coils of each phase molded in a cylindrical insulator were fitted into the core legs, and each coil of each phase located at the outermost circumference was The upper and lower peripheral walls are molded into an integral insulator, and peripheral walls projecting upward and downward are provided at the upper and lower ends of this integral insulator, respectively, and the upper peripheral walls cover the upper yoke from above to prevent rainwater from entering. This is achieved by providing an upper cover facing the upper cover and providing a net in the gap between the upper peripheral wall and the upper cover and the gap between the lower peripheral wall and the installation part.

以下この考案の実施例を図面にもとづいて説明する。Examples of this invention will be described below based on the drawings.

第１図はこの考案の一実施例によるモールド変圧器の縦
断面図、第２図はモールド変圧器の第１図■−■矢視断
面図、第３図はモールド変圧器の第１図■−■矢視断面
図である。Fig. 1 is a longitudinal cross-sectional view of a molded transformer according to an embodiment of this invention, Fig. 2 is a cross-sectional view of the molded transformer taken along arrows 1 - 2, and Fig. 3 is a sectional view of the molded transformer shown in Fig. 1 −■ It is a sectional view taken along the arrow.

このモールド変圧器は三相用のものであり、鉄心は３本
の垂直な鉄心脚部Ｌ２，３と、この鉄心脚部１，２゜３
の上側および下側をそれぞれ接続する継鉄４゜５とより
なっている。This molded transformer is for three-phase use, and the core has three vertical core legs L2 and 3, and core legs 1 and 2゜3.
It consists of a 4°5 yoke that connects the upper and lower sides, respectively.

一方決のコイル６．７，８を内部に同心に配置してモー
ルドされた円筒状の絶縁物９，１０．１１が鉄心脚部１
，２．３にはめこまれ、これらの内面と鉄心脚部Ｌ２，
３との間に図示しない間隔片が設けられて通風路が形成
され、上下は図示しないコイル押えで支持されている。A cylindrical insulator 9, 10, 11 is molded with coils 6, 7, 8 arranged concentrically inside the core leg 1.
, 2.3, and these inner surfaces and core legs L2,
A spacer piece (not shown) is provided between the housing and the housing 3 to form a ventilation passage, and the top and bottom are supported by coil holders (not shown).

最外周に位置する他方法のコイル１２゜１３．１４を内
部に埋設し、鉄心脚部Ｌ２，３と同じ間隔で垂直に配置
してモールドした絶縁物１５には、他方法のコイル１２
，１３，１４の内側に当る部分に、それぞれ他方法のコ
イル１２゜１３．１４と同心で、絶縁物６，７．８の外
径より充分に大きい径の貫通孔１６，１７．１８が設け
られ、上下の端面１９，２０に、この端面１９゜２０の
周縁部に沿い上下に突出した周壁２１，２２が設けられ
ている。The coil 12 of another method located on the outermost periphery is buried inside, and the molded insulator 15 is vertically arranged at the same interval as the core legs L2 and 3.
, 13, 14 are provided with through holes 16, 17, 18 which are concentric with the coils 12, 13, 14 of the other method and have diameters sufficiently larger than the outer diameters of the insulators 6, 7, 8. The upper and lower end surfaces 19 and 20 are provided with peripheral walls 21 and 22 that protrude vertically along the peripheral edges of the end surfaces 19 and 20, respectively.

上記の絶縁物１５はその貫通孔１６，１７．１８で絶縁
物６，７．８の外側にはめこまれ、貫通孔１６，１７．
１８の内面と絶縁物６，７．８との間に図示しない間隔
片が設けられて通風路が形成され、上下は図示しないコ
イル押えで支持されている。The above-mentioned insulator 15 is fitted into the outside of the insulator 6, 7.8 with its through holes 16, 17.18, and the through holes 16, 17.
A spacer piece (not shown) is provided between the inner surface of the coil 18 and the insulators 6, 7.8 to form a ventilation path, and the upper and lower sides are supported by coil holders (not shown).

上カバー２３は天井板２４と、その周縁より下方に突出
する側板２５とよりなり、その端が雨水の浸入を防ぐよ
うに周壁２１に臨むようになっており、上側の継鉄４を
上方より覆うように取付腕２６によって継鉄４に取付け
られている。The upper cover 23 is made up of a ceiling plate 24 and a side plate 25 that protrudes downward from its periphery, the end of which faces the peripheral wall 21 to prevent rainwater from entering, and the upper yoke 4 can be accessed from above. It is attached to the yoke 4 by a mounting arm 26 so as to cover it.

側板２５の下端は雨水の浸入を防ぐように例えば周壁２
１の外側に位置し、上カバー２３と周壁２１との間隙が
通風路となっており、したがってこの場合の通風路は下
方に向って外気に開口している。The lower end of the side plate 25 is connected to the peripheral wall 2, for example, to prevent rainwater from entering.
The gap between the upper cover 23 and the peripheral wall 21 serves as a ventilation passage, and therefore the ventilation passage in this case opens downward to the outside air.

また前記間隔に網２１が設けられている。Also, a net 21 is provided at the interval.

据付部である下カバー２８は変圧器本体を継鉄５の部分
で支持する台板２９と、台板２９より上方に突出する側
板３０とよりなり、下側の継鉄５を下方より覆っている
。The lower cover 28, which is the installation part, consists of a base plate 29 that supports the transformer main body with the yoke 5, and a side plate 30 that projects upward from the base plate 29, and covers the lower yoke 5 from below. There is.

側板３０の上端は周壁２２の内側に位置し、下カバー２
９と周壁２２との間隙が通風路となっており、したがっ
てこの場合の通風路は下方に向って外気に開口している
。The upper end of the side plate 30 is located inside the peripheral wall 22 and the lower cover 2
The gap between 9 and the peripheral wall 22 serves as a ventilation passage, and therefore, the ventilation passage in this case opens downward to the outside air.

また前記間隙に網３１が設けられている。A net 31 is also provided in the gap.

以上述べたようにこの考案によるモールド変圧器では鉄
心脚部はコイルをモールドした絶縁物で囲まれており、
継鉄はカバーで覆われており、上カバーおよび据付部と
しての下カバーと周壁とによって形成される通風路の外
気への開口部が例えば下方を向いて雨水の浸入を阻止す
る構成となっているので雨水が浸入し、鉄心に錆を生じ
させることがない。As mentioned above, in the molded transformer according to this invention, the core legs are surrounded by an insulator in which the coil is molded.
The yoke is covered with a cover, and the opening to the outside air of the ventilation path formed by the upper cover, the lower cover as an installation part, and the peripheral wall is configured to face downward, for example, to prevent rainwater from entering. This prevents rainwater from entering and causing rust to the iron core.

また通気路の開口部付近に網を設けているので、小動物
が浸入することがないから流電部の絶縁不良やこの絶縁
不良に起因するアーク損傷が無くなる。Furthermore, since a net is provided near the opening of the ventilation path, small animals cannot enter, thereby eliminating poor insulation of current-current parts and arc damage caused by poor insulation.

したがってこの変圧器は屋外で好状態に使用できる。Therefore, this transformer can be used outdoors in good condition.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の一実施例によるモールド変圧器の縦
断面図、第２図はモールド変圧器の第１図用−■矢視断
面図、第３図はモールド変圧器の第１図１−１矢視断面
図である。 １．２，３・・・・・・鉄心脚部、４，５・・・・・・
継鉄、１２゜１３．１４・・・・・・最外周のコイル、
１５・・・・・・最外周のコイルの絶縁物、１９，２０
・・・・・・端面、２１゜２２・・・・・・周壁、２３
・・・・・・上カバー ２７．３１・・・・・・網。Fig. 1 is a longitudinal cross-sectional view of a molded transformer according to an embodiment of this invention, Fig. 2 is a cross-sectional view of the molded transformer taken along the -■ arrow for Fig. 1, and Fig. 3 is a longitudinal cross-sectional view of the molded transformer as shown in Fig. -1 arrow sectional view. 1.2,3... Iron core legs, 4,5...
Yoke, 12゜13.14... outermost coil,
15...Insulator of the outermost coil, 19,20
...End face, 21゜22 ...Peripheral wall, 23
...Top cover 27.31 ...Net.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 鉄心脚部にそれぞれ筒状の絶縁物内にモールドされた各
相のコイルをはめ込んだモールド変圧器において、最外
周に位置する各相のそれぞれのコイルを一体の絶縁物内
にモールドし、この一体の絶縁物の上下の端部にそれぞ
れ上下に突出する周壁を設け、上部継鉄を上方より覆い
その端が雨水の浸入を防ぐように前記上側の周壁に臨む
上カバーを設け、上側の周壁と上カバーとの間隙および
下側の周壁と据付部との間隙に網を設けたことを特徴と
するモールド変圧器。In a molded transformer, the coils of each phase, which are molded in a cylindrical insulator, are fitted into the core legs, each coil of each phase located at the outermost periphery is molded in a single insulator, and this integrated Peripheral walls protruding vertically are provided at the upper and lower ends of the insulator, respectively, and an upper cover is provided whose end faces the upper peripheral wall so as to cover the upper yoke from above and prevent rainwater from entering. A molded transformer characterized in that a mesh is provided in the gap between the upper cover and the lower peripheral wall and the installation part.