JPH0845749A

JPH0845749A - Electromagnetic device

Info

Publication number: JPH0845749A
Application number: JP6207899A
Authority: JP
Inventors: Wataru Kitade; 亘北出
Original assignee: TOUZAI DENKO KK; Tozai Denko Co Ltd
Current assignee: TOUZAI DENKO KK; Tozai Denko Co Ltd
Priority date: 1994-07-27
Filing date: 1994-07-27
Publication date: 1996-02-16

Abstract

(57)【要約】（修正有）【目的】電源周波数５００Ｈｚ〜１ＫＨｚの範囲で使
用する電磁装置を鉄製ケース内に収納したときの効率ダ
ウンを防ぐ。【構成】積層された硅素鋼板１，２を突き合せてなる
閉磁路鉄心の突き合せ部にフェライトコア３１，３２を
挿入し、コイル４が挿入された鉄心脚部にエア・ギャッ
プを形成させた電磁装置。 (57) [Summary] (Correction) [Purpose] To prevent efficiency reduction when an electromagnetic device used in the power supply frequency range of 500 Hz to 1 KHz is housed in an iron case. [Structure] Ferrite cores 31 and 32 are inserted into the abutting portions of a closed magnetic circuit core formed by abutting laminated silicon steel plates 1 and 2, and an air gap is formed in the iron core leg portion into which the coil 4 is inserted. Electromagnetic device.

Description

【発明の詳細な説明】（産業上の利用分野）本発明は５００Ｈｚ〜１０００Ｈ
ｚの周波数で使用されるチョークコイルなどに用いられ
る有ギャップ鉄心に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is 500 Hz to 1000 H.
The present invention relates to a gapped core used for a choke coil used at a frequency of z.

（従来の技術）一般にけい素鋼板からなるＥＩ型鉄心な
どはＪＩＳでその寸法が決められ、各種寸法の鉄心が市
販されている。これら鉄心は主としてトランスに使用さ
れているため、ＥＩ型鉄心を組合せたときＥＩ間にギャ
ップができない構造となっている。これら鉄心をそのま
ま使用し、トランス以外のチョークコイルなどに使用す
るときは、通常ＥＩ間にスペーサーを入れ、ギャップを
もうけていた。(Prior Art) Generally, the dimensions of EI type iron cores and the like made of silicon steel sheets are determined by JIS, and iron cores of various dimensions are commercially available. Since these iron cores are mainly used for transformers, when the EI type iron cores are combined, no gap can be formed between the EIs. When these iron cores were used as they were and were used in choke coils other than transformers, a spacer was usually inserted between EIs to form a gap.

（発明が解決しようとする問題点）しかし、スペーサギ
ャップを入れ、そのトランスを鉄製のケース内に収納す
るとＥＩ型鉄心の接合部の外脚のギャップ部で漏れ磁束
が発生し、ギャップ部に近接した鉄製ケースに磁束が流
れ、ケースが発熱したり、特性が大きく変化する。この
現象は周波数が大きくなるにつれ顕著になる。本発明
は、以上の欠点を補うためのもので電源周波数５００Ｈ
ｚ〜１ＫＨｚの範囲で使用する電磁装置を鉄製のケース
内に収納したときの効率ダウンを防ぐことを目的とす
る。(Problems to be solved by the invention) However, if a spacer gap is inserted and the transformer is housed in an iron case, a leakage magnetic flux is generated in the gap part of the outer leg of the joint part of the EI type iron core, and the leakage magnetic flux comes close to the gap part. Magnetic flux flows through the iron case, causing the case to generate heat and the characteristics to change significantly. This phenomenon becomes more remarkable as the frequency increases. The present invention is intended to make up for the above-mentioned drawbacks by using a power source frequency of 500H.
The purpose is to prevent a reduction in efficiency when an electromagnetic device used in the range of z to 1 KHz is housed in an iron case.

（課題を解決するための手段）市販のけい素鋼板からな
るＥＩ型鉄心などをそのまま使用し、たとえばＥ型鉄心
の外脚部両端とＩ型鉄心との間にフェライトコアを挿入
し、Ｅ型鉄心中央脚部にギャップをもうける構成とし
た。(Means for Solving the Problem) Using an EI type core made of a commercially available silicon steel plate as it is, for example, inserting a ferrite core between both ends of the outer leg of the E type core and the I type core, A gap is provided in the center leg of the iron core.

（作用）Ｅ型鉄心の外脚部にギャップがなくなったた
め、ＥＩ型鉄心接合部のＥ型外脚部での漏れ磁束はなく
なり、又、接合部にはフェライトコアを挿入しているた
め５００Ｈｚ〜１０００Ｈｚの周波数に対してもこの部
分での鉄損はほとんどない。この結果鉄製ケース内に挿
入しても、漏れ磁束によるケースの発熱もなく効率も上
昇した。(Function) Since there is no gap in the outer legs of the E-shaped iron core, there is no leakage flux at the E-shaped outer legs of the EI-type iron core joint, and since the ferrite core is inserted in the joint, 500 Hz- There is almost no iron loss in this portion even at a frequency of 1000 Hz. As a result, even when inserted in the iron case, the efficiency did not rise because the case did not generate heat due to leakage flux.

（実施例）第１図は本発明の一実施例で、１および２は
けい素鋼板よりなるＥ型鉄心およびＩ型鉄心でＥ型鉄心
１の両外脚部とＩ型鉄心２の接合部との間にフェライト
コア３１および３２が挿入されている。４はコイルであ
る。上記構成の鉄心を使用して水銀灯２５０Ｗ用のチョ
ークを設計したものと従来の第２図に示すスペースギャ
ップ５をＥ型鉄心１とＩ型鉄心２の間に挿入したチョー
クとをそれぞれ鉄製のケースに収納し、２００Ｖ５００
Ｈｚの電源で水銀灯２５０Ｗを点灯させたときの電気特
性を下記に示す。(Embodiment) FIG. 1 is an embodiment of the present invention, in which 1 and 2 are E-shaped cores and I-shaped cores made of silicon steel plates, and a joint portion between both outer legs of the E-shaped core 1 and the I-shaped core 2. Ferrite cores 31 and 32 are inserted between and. 4 is a coil. A case in which a choke for a mercury lamp 250W is designed using the iron core having the above-mentioned structure and a choke in which a space gap 5 shown in FIG. 2 of the related art is inserted between an E-shaped iron core 1 and an I-shaped iron core 2 are made of iron. Stored in 200V500
The electrical characteristics when the mercury lamp 250W is turned on by the power source of Hz are shown below.

この結果、約４０％電力損が軽減され効率がアップし
た。 As a result, the power loss was reduced by about 40% and the efficiency was improved.

（発明の効果）以上のように本発明によれば、市販の鉄
心がそのまま使用でき、しかも効率の高い電磁装置を提
供できる。As described above, according to the present invention, a commercially available iron core can be used as it is, and an electromagnetic device with high efficiency can be provided.

プを持つ鉄心であれば本発明を利用できるのは当然であ
る。 It is natural that the present invention can be applied to any iron core having a cup.

【図面の簡単な説明】第１図は本発明の一実施例、第２図は従来例を示す断面
図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional example.

Claims

[Claims]

An electromagnetic device in which a ferrite core is inserted into the abutting portion of a closed magnetic circuit iron core formed by abutting laminated silicon steel sheets, and an air gap is formed in the iron core leg portion into which the coil is inserted.