JPH02242551A - Anode structure for magnetron - Google Patents
Anode structure for magnetronInfo
- Publication number
- JPH02242551A JPH02242551A JP6253189A JP6253189A JPH02242551A JP H02242551 A JPH02242551 A JP H02242551A JP 6253189 A JP6253189 A JP 6253189A JP 6253189 A JP6253189 A JP 6253189A JP H02242551 A JPH02242551 A JP H02242551A
- Authority
- JP
- Japan
- Prior art keywords
- anode
- inner circumferential
- cylinder
- metallic rings
- circumferential surface
- 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
- 239000002184 metal Substances 0.000 claims description 15
- 230000001419 dependent effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Microwave Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、電子レンジや医療機器なとのマイクロ波加熱
装置に用いられるマグネトロンの陽極構体に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an anode structure of a magnetron used in microwave heating devices such as microwave ovens and medical equipment.
従来の技術
一般に、マグネトロンのマイクロ波発振周波数は共振周
波数によって決まり、共振周波数は陽極筒体、陽極ベイ
ンおよび均圧環の寸法等によって決まる。そこで、組み
立てを終えた陽極構体の検査工程において、陽極ベイン
にとり付けられている均圧環を変形させて所定の共振周
波数が得られるように調整している。しかし、マグネト
ロンの小型化がすすむに伴い均圧環も径小化しているの
で、これに対して必要な変形を与え難く、細い均圧環を
使用すると、高温下で不所望の変形をきたす。2. Description of the Related Art Generally, the microwave oscillation frequency of a magnetron is determined by the resonance frequency, and the resonance frequency is determined by the dimensions of the anode cylinder, the anode vane, the pressure equalizing ring, and the like. Therefore, in the inspection process of the assembled anode assembly, the pressure equalizing ring attached to the anode vane is deformed and adjusted to obtain a predetermined resonance frequency. However, as magnetrons become more compact, the diameter of the equalizing ring is also becoming smaller, making it difficult to provide the necessary deformation to the equalizing ring, and if a thin equalizing ring is used, undesirable deformation will occur at high temperatures.
実開昭58−62538号公報に開示されている考案で
は、第3図および第4図に示すように陽極筒体1の内周
面から中心軸側へ突出した多数の陽極ベイン2を、その
軸方向2端面に設けた均圧環3,4で一つおきに短絡さ
せる七ともに、陽極筒体1の近傍に共振周波数調整用の
金属リング5を設け、この金属リング5によっても陽極
ベイン2を一つおきに短絡せしめる構成をとっている。In the device disclosed in Japanese Utility Model Application Publication No. 58-62538, as shown in FIGS. 3 and 4, a large number of anode vanes 2 protruding from the inner circumferential surface of the anode cylinder 1 toward the central axis are In addition, a metal ring 5 for adjusting the resonance frequency is provided near the anode cylinder 1, and this metal ring 5 also allows the anode vane 2 to be The configuration is such that every other one is shorted.
この場合、均圧環3,4に対するとは別個に、金属リン
グ5に対しても前述のような変形を与えることにより、
共振周波数を調整することができる。In this case, by deforming the metal ring 5 as described above separately from the pressure equalizing rings 3 and 4,
Resonant frequency can be adjusted.
発明が解決しようとする課題
マグネトロンを小型化すると、共振周波数は高い方向へ
ずれ込みやすい。そのうえ、前述のように陽極筒体の内
周面に沿った径大な金属リングを陽極筒体から離れた位
置において陽極ベインに一つおきに接続するには、スペ
ース面でかなりの制約を受i、lる。Problems to be Solved by the Invention When a magnetron is miniaturized, its resonant frequency tends to shift toward a higher direction. Moreover, as mentioned above, connecting every other large-diameter metal ring along the inner circumferential surface of the anode cylinder to an anode vane at a position away from the anode cylinder requires considerable space constraints. i,l.
課題を解決するだめの手段
本発明によると、1対の共振周波数調整用金属リングを
用いるが、この金属リングを陽極筒体の内周面から中心
軸側へ2段に張り出させ、ずへての陽極ベインに軸方向
2端面で接続せしめる。Means for Solving the Problems According to the present invention, a pair of metal rings for adjusting the resonant frequency is used, and the metal rings are extended in two stages from the inner circumferential surface of the anode cylinder toward the central axis. The two axial end faces are connected to each anode vane.
作用
このように構成すると、前記1対の金属リングによって
共振空洞の静電容量が増すので、つまり、f = 1
/ 2πF丁でのCが大きくなるので、共振周波数fは
低くなる方向へずれ込み、小型化した場合の共振周波数
を所定値に設定しやすくなる。Effect With this configuration, the capacitance of the resonant cavity is increased by the pair of metal rings, that is, f = 1
/ Since C at 2πF increases, the resonant frequency f shifts to a lower value, making it easier to set the resonant frequency to a predetermined value when miniaturized.
実施例
つぎに、本発明を図面に示し、た実施例とともに説明す
る。Embodiments Next, the present invention will be explained with reference to the drawings and embodiments.
第1図に示すように、陽極筒体1の内周面から中心軸方
向へ突出した多数の陽極ベイン2は、その軸方向2端面
に設(Jられた2対の均圧環3,4によって一つおきに
短絡されており、陽極筒体1の内周面から中心軸側へ2
段に張り出した1対の共振周波数調整用金属リング6a
、6bは、すへての陽極ベイン1の前記2端面にそれぞ
れ電気的に接続されている。As shown in FIG. 1, a large number of anode vanes 2 protrude from the inner circumferential surface of the anode cylinder 1 in the direction of the central axis. Every other one is short-circuited, and two wires are connected from the inner peripheral surface of the anode cylinder 1 to the central axis
A pair of resonant frequency adjustment metal rings 6a protruding from the step
, 6b are electrically connected to the two end faces of all the anode vanes 1, respectively.
このため、陽極筒体1の内周面に沿った静電容量は1対
の金属リング6a、6bによって増大し、その増大量は
、組み込む1対の金属リング6a。Therefore, the capacitance along the inner circumferential surface of the anode cylinder 1 is increased by the pair of metal rings 6a, 6b, and the amount of increase is due to the amount of increase due to the pair of metal rings 6a that are incorporated.
6bの谷幅と相互間隔によって決まる。すなわち、適当
幅の1対の金属リング6a、6bを適当な間隔で対向配
置すると、それ自体で共振周波数の調整ができ、均圧環
を変形させて行う調整は補助的なもので足りるようにな
る。6b is determined by the valley width and mutual spacing. In other words, by arranging a pair of metal rings 6a and 6b of appropriate widths facing each other at an appropriate interval, the resonance frequency can be adjusted by itself, and the adjustment made by deforming the pressure equalizing ring is sufficient as an auxiliary one. .
第2図に示す実施例では、各陽極ベイン2の2端面に切
欠部を設け、計部に金属リング6a、6bを嵌入させる
構成をとっている。In the embodiment shown in FIG. 2, two end faces of each anode vane 2 are provided with notches, and metal rings 6a and 6b are fitted into the gauge portions.
発明の効果
以上のように本発明によると、マグネトロンの小型化に
伴い共振周波数が高い方向へずれるのを、陽極筒体の内
周面側に1対の金属リングを設けるだけで解消できるの
であり、とくに小型マグネトロンの設計を容易ならしめ
得る。Effects of the Invention As described above, according to the present invention, the shift of the resonant frequency toward higher levels due to the miniaturization of the magnetron can be resolved by simply providing a pair of metal rings on the inner peripheral surface of the anode cylinder. In particular, it can facilitate the design of small magnetrons.
第1図は本発明を実施したマグネトロン用陽極構体の一
部破断斜視図、第2図は本発明の他の実施例の側断面図
、第3図は従来のマグネトロン用陽極構体の平面図、第
4図は同陽極構体の側断面図である。
1・・・・・・陽極筒体、2・・・・・・陽極ベイン、
3,4・・・・・・均圧環、6a、6b・・・・・・共
振周波数調整用金属リング。
代理人の氏名 弁理士 粟野重孝 はか1名(−−一陽
槽宥グ本
クー−−7歩引タベイン
第
図FIG. 1 is a partially cutaway perspective view of an anode assembly for a magnetron embodying the present invention, FIG. 2 is a side sectional view of another embodiment of the invention, and FIG. 3 is a plan view of a conventional anode assembly for a magnetron. FIG. 4 is a side sectional view of the same anode structure. 1...Anode cylinder body, 2...Anode vane,
3, 4... Equalizing ring, 6a, 6b... Metal ring for adjusting resonance frequency. Name of agent: Patent attorney Shigetaka Awano (1 person)
Claims (1)
成する多数の陽極ベインが、軸方向の2端面においてそ
れぞれの均圧環で一つおきに短絡され、前記陽極筒体の
内周面から中心軸側へ2段に突出した1対の共振周波数
調整用金属リングが、前記陽極ベインのすべてに前記2
端面で接続されてなることを特徴とするマグネトロン用
陽極構体。A large number of anode vanes that protrude from the inner circumferential surface of the anode cylinder toward the central axis side and form a resonant cavity are short-circuited every other time by pressure equalizing rings at two end faces in the axial direction, and the inner circumference of the anode cylinder is A pair of resonant frequency adjustment metal rings protruding in two steps from the surface toward the center axis are provided on all of the anode vanes.
An anode structure for a magnetron characterized by being connected at end faces.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6253189A JPH02242551A (en) | 1989-03-15 | 1989-03-15 | Anode structure for magnetron |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6253189A JPH02242551A (en) | 1989-03-15 | 1989-03-15 | Anode structure for magnetron |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02242551A true JPH02242551A (en) | 1990-09-26 |
Family
ID=13202879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6253189A Pending JPH02242551A (en) | 1989-03-15 | 1989-03-15 | Anode structure for magnetron |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02242551A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100351790B1 (en) * | 1998-06-08 | 2002-11-18 | 엘지전자주식회사 | Structure and method of anode manufacturing for micro wave oven |
EP1316984A2 (en) * | 2001-11-09 | 2003-06-04 | Matsushita Electric Industrial Co., Ltd. | Magnetron apparatus |
-
1989
- 1989-03-15 JP JP6253189A patent/JPH02242551A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100351790B1 (en) * | 1998-06-08 | 2002-11-18 | 엘지전자주식회사 | Structure and method of anode manufacturing for micro wave oven |
EP1316984A2 (en) * | 2001-11-09 | 2003-06-04 | Matsushita Electric Industrial Co., Ltd. | Magnetron apparatus |
EP1316984A3 (en) * | 2001-11-09 | 2004-03-03 | Matsushita Electric Industrial Co., Ltd. | Magnetron apparatus |
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