JPS612236A - Magnetron - Google Patents
MagnetronInfo
- Publication number
- JPS612236A JPS612236A JP59122410A JP12241084A JPS612236A JP S612236 A JPS612236 A JP S612236A JP 59122410 A JP59122410 A JP 59122410A JP 12241084 A JP12241084 A JP 12241084A JP S612236 A JPS612236 A JP S612236A
- Authority
- JP
- Japan
- Prior art keywords
- magnetron
- heater box
- frequency
- radio wave
- composite ferrite
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/14—Leading-in arrangements; Seals therefor
- H01J23/15—Means for preventing wave energy leakage structurally associated with tube leading-in arrangements, e.g. filters, chokes, attenuating devices
Landscapes
- Microwave Tubes (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 本発明はマグネトロンの構成に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to the construction of a magnetron.
従来例の構成とその問題点
マグネトロンは、高効率のマイクロ波発振管として電子
レンジ等で数多く利用されている。マグネトロンは一種
の進行波型増巾器であり、基本波の他に少量の高周波（
不要輻射）も同時発振する。Conventional configurations and their problems Magnetrons are widely used as high-efficiency microwave oscillation tubes in microwave ovens and the like. A magnetron is a type of traveling wave amplifier, and in addition to the fundamental wave, it generates a small amount of high frequency (
Unwanted radiation) also oscillates at the same time.
一方、衛星放送にみられる如く、微弱でかつマグネトロ
ンの高周波領域の周波数を利用するシステムが出現し、
今後増加の方向にある。したがって電子レンジ等の加熱
器とニューメディア通信系が共存するためには、マグネ
トロンにも対策が必要になる。On the other hand, as seen in satellite broadcasting, systems that utilize weak and high frequency frequencies of magnetrons have appeared.
It is expected to increase in the future. Therefore, in order for heaters such as microwave ovens to coexist with new media communication systems, countermeasures must be taken for magnetrons as well.
マグネトロン（２４５０１４にの発振周波数が多い）は
、基本波よりも低い周波数成分に対策をとるために、ヒ
ータリード線部に、コイルと貫通コンデンサによるＬ−
Ｃフィルタを設けていた。従来のこの種フィルタは基本
波よりも高い周波数に対しては全く効果が期待できない
。In order to take measures against frequency components lower than the fundamental wave, the magnetron (which has a high oscillation frequency of 245014) has a coil and a feedthrough capacitor connected to the heater lead wire.
A C filter was installed. Conventional filters of this kind cannot be expected to be effective at all at frequencies higher than the fundamental wave.
発明の目的
本発明の目的は高周波対策を施こしたマグネトロンの提
供にある。OBJECTS OF THE INVENTION An object of the present invention is to provide a magnetron with high frequency countermeasures.
発明の構成
本発明のマグネトロンに発振用電力を供給するヒータ箱
内に、複合フェライトなどによる電波吸収体を設けるこ
とにより対策を′とるものである。Structure of the Invention A countermeasure is taken by providing a radio wave absorber made of composite ferrite or the like in the heater box that supplies oscillation power to the magnetron of the present invention.
実施例の説明 本発明の実施例を図面にもとづき説明する。Description of examples Embodiments of the present invention will be described based on the drawings.
第１図はマグネトロンの外形斜視図である。アンテナ１
、フレームＩ２、フレーム■３、磁石Ｉ４、磁石■６、
アルミ板による放熱フィン６、電力供給リード端子７、
貫通コンデンサ８、ヒータ箱９はフタ１０で密閉されて
いる。１１はビスである。FIG. 1 is an external perspective view of the magnetron. antenna 1
, frame I2, frame ■3, magnet I4, magnet ■6,
Heat dissipation fin 6 made of aluminum plate, power supply lead terminal 7,
The feedthrough capacitor 8 and heater box 9 are sealed with a lid 10. 11 is a screw.
第２図に第１図の一部断面図を示す。コイル１２を通し
て電波作用空間１３内のヒータ（図示せず）にされてい
る。アルミニウムによる円筒状体１８はヒータ箱とセラ
ジク材１６の間に装着されている。ヒータ箱空間１４に
はセラジク材１５及びヒータ箱９にそって、複合フェラ
イト板１９ 、２０が設けられている。FIG. 2 shows a partial sectional view of FIG. 1. A heater (not shown) is provided in the radio wave action space 13 through the coil 12 . An aluminum cylindrical body 18 is mounted between the heater box and the ceramic material 16. In the heater box space 14, composite ferrite plates 19 and 20 are provided along the ceramic material 15 and the heater box 9.
複合フェライト板はポリエチレンクロライドゴムシリコ
ーンゴムや、ポリエステルの高耐熱誘電体とフェライト
粉の混合体からなる材料で、電波エネルギーを熱エネル
ギーに変える電波吸収の機能をもつ。電波吸収量の周波
数特性のうち最大吸収を示す周波数を共振周波数と呼び
、本考案ではこの共振周波数が基本周波数よりも高い複
合フェライト材を用いる。Composite ferrite plates are made of a mixture of polyethylene chloride rubber, silicone rubber, polyester, a highly heat-resistant dielectric, and ferrite powder, and have a radio wave absorption function that converts radio wave energy into thermal energy. Among the frequency characteristics of the amount of radio wave absorption, the frequency that exhibits maximum absorption is called the resonant frequency, and the present invention uses a composite ferrite material whose resonant frequency is higher than the fundamental frequency.
発明の効果
本発明によれば、電波作用空間からの電波のうち基本波
より低い成分はＬ−Ｃフィルタなどにより、また高調波
成分は電波吸収体により、外部に洩れるので防止できる
マグネトロンが構成できる。Effects of the Invention According to the present invention, it is possible to construct a magnetron in which components lower than the fundamental wave of radio waves from a radio wave action space can be prevented from leaking to the outside by an LC filter, etc., and harmonic components can be prevented from leaking to the outside by a radio wave absorber. .
２＠以上の複合フェライトを用いる場合はヒータ箱側に
体積抵抗率の低い材料を配置することにより効果を増す
ことができる。又高電圧に対し砥面キヨリをかぜぐため
に複合フェライトに絶縁被覆やカバーを施こすことと絶
縁保証することも有効であろう。When using a composite ferrite of 2@ or more, the effect can be increased by arranging a material with low volume resistivity on the heater box side. It would also be effective to cover the composite ferrite with an insulating coating or cover and to guarantee the insulation in order to prevent the abrasive surface from slipping against high voltage.
この他、本発明によれば次の効果が期せる。In addition, the following effects can be expected according to the present invention.
（１）耐熱温度１００°Ｃ以上の複合ブエライト材を用
いているので初期性能力が長期に保てる。(1) Since a composite buerite material with a heat resistance temperature of 100°C or higher is used, initial performance can be maintained for a long period of time.
（噂辷−タ箱内は電波に対して共振器と［７て動作する
ので、電波が直接吸収される他に、箱に沿って設けた電
波吸収体で効率的に共振器のＱが低下でき、ヒータ箱か
らの電波抑制効果が倍化する。(Rumor: The inside of the data box operates as a resonator in response to radio waves, so in addition to directly absorbing radio waves, the radio wave absorber installed along the box effectively reduces the Q of the resonator. This doubles the effect of suppressing radio waves from the heater box.
第１図は本発明の一実施例であるマグネトロン斜視図、
第２図は第１図の局部断面図である。
９・・・ ・ヒータ箱、１ｏ−＝−・ヒータ箱フタ、１
４・・ ヒータ箱空間、１９．２０・・・・複合フェラ
イト材。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第２
図FIG. 1 is a perspective view of a magnetron that is an embodiment of the present invention.
FIG. 2 is a partial sectional view of FIG. 1. 9... ・Heater box, 1o-=-・Heater box lid, 1
4... Heater box space, 19.20... Composite ferrite material. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
figure
Claims (1)
高い、耐熱性の板状複合フェライト材を前記ヒータ箱空
間の壁面に沿って装置したヒータ箱を有するマグネトロ
ン。A magnetron having a heater box in which a heat-resistant plate-shaped composite ferrite material having an absorption characteristic having a resonance frequency higher than the fundamental frequency is arranged along the wall surface of the heater box space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59122410A JPS612236A (en) | 1984-06-14 | 1984-06-14 | Magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59122410A JPS612236A (en) | 1984-06-14 | 1984-06-14 | Magnetron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS612236A true JPS612236A (en) | 1986-01-08 |
Family
ID=14835113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59122410A Pending JPS612236A (en) | 1984-06-14 | 1984-06-14 | Magnetron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS612236A (en) |
-
1984
- 1984-06-14 JP JP59122410A patent/JPS612236A/en active Pending
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