JPS6210350U

JPS6210350U -

Info

Publication number: JPS6210350U
Application number: JP1985100486U
Authority: JP
Priority date: 1985-07-03
Filing date: 1985-07-03
Publication date: 1987-01-22

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す要部縦断面図
、第２図はその要部拡大断面図、第３図はその要
部組立斜視図、第４図は高調波の輻射特性図、第
５図および第６図は各々本考案の他の実施例を示
す要部縦断面図、第７図はさらに本考案の他の実
施例を示す要部縦断面図、第８図は従来構造を示
す要部縦断面図である。１１…カソード、１２…アノードシリンダ、１
３…アノードベイン、１５…ポールピース、１６
…円筒状金属容器、１８…絶縁筒、２０…出力ア
ンテナリード、３１，３３…高調波チヨーク筒体
、Ａ１，Ａ２…アンテナ端部チヨークの環状溝、
Ｂ，Ｃ…高次高調波用チヨークの環状溝、Ｄ…金
属容器の内径寸法、Ｌｓ…長さ寸法、Ｇ…溝開口
幅。 Fig. 1 is a vertical sectional view of the main part showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main part, Fig. 3 is an assembled perspective view of the main part, and Fig. 4 is a harmonic radiation characteristic diagram. , FIG. 5 and FIG. 6 are longitudinal cross-sectional views of main parts showing other embodiments of the present invention, FIG. 7 is a longitudinal cross-sectional view of main parts showing other embodiments of the present invention, and FIG. FIG. 3 is a vertical cross-sectional view of main parts showing the structure. 11...Cathode, 12...Anode cylinder, 1
3...Anode vane, 15...Pole piece, 16
...Cylindrical metal container, 18...Insulating tube, 20...Output antenna lead, 31, 33...Harmonic cable yoke cylinder, A1, A2...Annular groove of antenna end cable yoke,
B, C...Annular groove of the chi yoke for high-order harmonics, D...Inner diameter dimension of metal container, Ls...Length dimension, G...Groove opening width.

Claims

[Claims for Utility Model Registration] (1) A cathode, a cylindrical anode having a resonant cavity arranged around the cathode, and a cylindrical metal container hermetically sealed to a part of the anode;
An output insulating tube is hermetically sealed to the metal container directly or through another joining member, and one end thereof is electrically coupled to the resonant cavity of the anode and extends through the inner space of the metal container and the insulating tube. an output antenna lead; and a chiyoke cylindrical body disposed in an inner region of the metal container to surround the antenna lead and forming a chiyoke annular groove having a depth of approximately 1/4 of an arbitrary harmonic wavelength. In the magnetron for a microwave oven, the chiyoke cylindrical body disposed in the inner region of the metal container forms a chiyoke annular groove that exhibits a radiation suppressing effect on higher harmonics higher than the fourth harmonic, and the above-mentioned 1. A magnetron for a microwave oven, wherein the metal container has an inner diameter smaller than 1/2 wavelength of harmonics whose radiation is suppressed by a cylindrical tube provided in an inner region of the metal container. (2) The metal container has a cylindrical portion having a dimension of 1/2 wavelength or less of the harmonic wave whose radiation is suppressed by a cylindrical body provided in the inner region of the metal container, and a cylindrical portion having a dimension of 1/2 wavelength or less of the harmonic wave whose radiation is suppressed by the cylindrical body provided in the inner region of the metal container. 2. The magnetron for a microwave oven according to claim 1, which extends over a length of the cylinder, and is provided in such a manner that the opening of the harmonic choke is located within the cylindrical portion. (3) Claim 1 of the Utility Model Registration Claim in which the radial width of the opening of the annular groove formed by the yoke cylinder is formed to be 1/10 or less of the harmonic wavelength whose radiation is suppressed by the yoke. magnetron for microwave ovens.