JPS62285345A - Magnetron device - Google Patents
Magnetron deviceInfo
- Publication number
- JPS62285345A JPS62285345A JP12758286A JP12758286A JPS62285345A JP S62285345 A JPS62285345 A JP S62285345A JP 12758286 A JP12758286 A JP 12758286A JP 12758286 A JP12758286 A JP 12758286A JP S62285345 A JPS62285345 A JP S62285345A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- magnetron
- stem
- edge
- magnetic pole
- 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 abstract description 14
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Microwave Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
産業上の利用分野
本発明は、電子レンジ等に用いられるマグネルロン装置
に関するものである。Detailed Description of the Invention 3. Detailed Description of the Invention Field of Industrial Application The present invention relates to a Magnelron device used in microwave ovens and the like.
従来の技術
一般に、電子レンジ等に用いられるマグネトロン装置は
第２図に示すように構成され、マグネトロン１はその入
力側に陰極端子導出用ステム２を、そして、出力側には
電磁波放出端子３をそれぞれ有している。また、マグネ
トロン１の第１の磁極片４の外端面側に同軸的に設けら
れた第１の環状永久磁石５は、一方の磁極Ｓを磁極片４
に磁気的に結合し、第２の磁極片６の外端面側に同軸的
に設けられた第２の環状永久磁石７は、一方の磁極Ｎを
磁極片６に磁気的に結合している。そして、両永久磁石
５．７の他方の磁極同志を磁気的に結合する枠状継鉄８
の底板部に金属製シールドケース９がとりつけられてお
り、このシールドケース９はマグネトロン１の陰極端子
１０および同陰極端子１０に接続されたチョークコイル
１１を収容し、チョークコイル１１はシールドケース９
の側壁にとりつけられた貫通型コンデンサ１２とともに
ＬＣフィルタ回路を形成している。2. Description of the Related Art In general, a magnetron device used in a microwave oven or the like is constructed as shown in FIG. Each has its own. Further, a first annular permanent magnet 5 coaxially provided on the outer end surface side of the first magnetic pole piece 4 of the magnetron 1 has one magnetic pole S connected to the magnetic pole piece 4.
A second annular permanent magnet 7 , which is magnetically coupled to the magnetic pole piece 6 and coaxially provided on the outer end surface side of the second magnetic pole piece 6 , magnetically couples one magnetic pole N to the magnetic pole piece 6 . A frame-shaped yoke 8 magnetically couples the other magnetic poles of both permanent magnets 5.7.
A metal shield case 9 is attached to the bottom plate of the magnetron 1, and this shield case 9 accommodates a cathode terminal 10 of the magnetron 1 and a choke coil 11 connected to the cathode terminal 10.
Together with the feedthrough capacitor 12 attached to the side wall of the filter, an LC filter circuit is formed.
第１の磁極片４は、陽極筒体１３の一方の開口端部に設
けられており、この磁極片４を覆って前記開口端部から
突出したはと目状の金属管体１４にステム２が封着され
ている。そして、金属管体１４と永久磁石５との間にフ
ランジ部を挿入したはと目状シールド金属筒１５が、永
久磁石５を貫通してシールドケース９の筒状突出部に嵌
合しているので、セラミックからなるステム２を透過し
た漏洩電磁波がフェライトからなる永久磁石５を透過し
て装置外へ漏出することが防止される。The first magnetic pole piece 4 is provided at one open end of the anode cylinder 13, and the stem 2 is attached to an eyelet-shaped metal tube 14 that covers the magnetic pole piece 4 and protrudes from the open end. is sealed. Then, the eyelet-shaped shield metal tube 15, which has a flange inserted between the metal tube body 14 and the permanent magnet 5, penetrates the permanent magnet 5 and fits into the cylindrical protrusion of the shield case 9. Therefore, leakage electromagnetic waves that have passed through the stem 2 made of ceramic are prevented from passing through the permanent magnet 5 made of ferrite and leaking out of the device.
また、第２図に図示を省略した陰極および陰極端子導出
部は第３図に示すように構成され、螺旋状の陰極本体１
６は、その両端部に設けられたエンドハツト１７．１８
に接続された２本のステムリード線１９，２０によって
端子導出される。そして、ステムリード線２０の中程に
は、漏洩電磁波の高調波成分の流通を阻止するためのチ
ョークリング２１がとりつけられている。In addition, the cathode and the cathode terminal lead-out portion, which are not shown in FIG. 2, are constructed as shown in FIG.
6 has end hats 17 and 18 provided at both ends thereof.
Terminals are led out by two stem lead wires 19 and 20 connected to. A choke ring 21 is attached to the middle of the stem lead wire 20 for blocking the flow of harmonic components of leaked electromagnetic waves.
発明が解決しようとする問題点
このように構成された従来のマグネトロン装置において
は、とくにステムリード線１９，２０を伝送路としてス
テム２ｇＩへ漏洩する電磁波の装置性漏出をほぼ完全に
阻止することができたのであるが、そのために必要な部
品の点数がかさみ、これが製造コストの低減を阻む一要
因となっていた。Problems to be Solved by the Invention In the conventional magnetron device configured as described above, it is particularly difficult to almost completely prevent electromagnetic waves from leaking to the stem 2gI using the stem lead wires 19 and 20 as transmission paths. However, this increased the number of parts required, which was one of the factors preventing reductions in manufacturing costs.
問題点を解決するための手段
本発明によると、マグネトロンの出力側環状永久磁石を
貫通して枠状継鉄に電気的に接続される導電性筒状体の
一端縁を、マグネトロン陽極筒体の開口端部から突出す
る金属管体に嵌着せしめるとともに、同筒状体の他端縁
でちってマグネトロンの陰極端子導出用ステムを包囲せ
しめる。Means for Solving the Problems According to the present invention, one end edge of the conductive cylindrical body that passes through the annular permanent magnet on the output side of the magnetron and is electrically connected to the frame-shaped yoke is connected to the anode cylindrical body of the magnetron. It is fitted into a metal tubular body protruding from the open end, and the other end of the cylindrical body is wrapped around the stem for leading out the cathode terminal of the magnetron.
作用
このように構成すると、従来のはと目状シールド金属筒
による電磁波シールド作用と、チョークリングによるチ
ョーク作用とが前記導電性筒状体のみによって得られ、
部品点数の削減が可能となる。Function With this structure, the electromagnetic wave shielding effect of the conventional eyelet-shaped shielding metal cylinder and the choking effect of the choke ring can be obtained only by the conductive cylindrical body,
It is possible to reduce the number of parts.
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。Example Next, the present invention will be explained along with embodiments shown in the drawings.
第１図に示す本発明実施のマグネトロン装置が第２図に
示した従来のマグネトロン装置と異なるところは、マグ
ネトロン１の陽極筒体１３の入力制量口端部に設けられ
た磁極片４を覆い前記開口端部から突出した金属管体１
４に導電性筒状体１６の一端縁が嵌着され鑞付けされて
いる点と、この筒状体１６の他端縁がマグネトロン１の
陰極端子導出用ステム２を包囲してなる点と、シールド
ケース１７の一部分が筒状体１６に圧接して、筒状体１
６と枠状継鉄８とが電気的に接続されてなる点とであっ
て、その他の構成は従来と変りがない。ただし、筒状体
１６の電気長りはマグネトロン１の高調波長λの約４分
の１に設定されている。The difference between the magnetron device according to the present invention shown in FIG. 1 and the conventional magnetron device shown in FIG. Metal tube body 1 protruding from the open end
4, one end edge of the conductive cylindrical body 16 is fitted and brazed, and the other end edge of the cylindrical body 16 surrounds the stem 2 for leading out the cathode terminal of the magnetron 1; A portion of the shield case 17 is pressed against the cylindrical body 16, and the cylindrical body 1
6 and the frame-shaped yoke 8 are electrically connected, and other configurations are the same as before. However, the electrical length of the cylindrical body 16 is set to about one quarter of the harmonic wavelength λ of the magnetron 1.
発明の効果
このような構成であるから、ステムリード線を通じてス
テム２側へ向かう漏洩電磁波の大半を、筒状体１６によ
るチョーク作用で反射させ得、ステム２内に第３図図示
のようなチョークリングを設ける必要がなくなる。その
上、ステム２側へ漏洩した電磁波がステム２を透過して
永久磁石５側へ向かうことも筒状体１６によって阻止さ
れ、漏洩電磁波による永久磁石５の過熱および妨害電波
の発生を防止することができる。Effects of the Invention With such a configuration, most of the leaked electromagnetic waves directed toward the stem 2 through the stem lead wire can be reflected by the choke action of the cylindrical body 16, and a choke as shown in FIG. There is no need to provide a ring. Furthermore, the cylindrical body 16 prevents electromagnetic waves leaking to the stem 2 side from passing through the stem 2 and heading toward the permanent magnet 5 side, thereby preventing overheating of the permanent magnet 5 and generation of jamming radio waves due to the leaked electromagnetic waves. Can be done.
第１図は本発明を実施したマグネトロン装置の一部破断
側面図、第２図は従来のマグネトロン装置の一部破断側
面図、第３図は同装置の陰極および陰極端子導出部の側
断面図である。
１・・・・・・マグネトロン、２・・・・・・ステム、
４，６・・・・・・磁極片、５，７・・・・・・永久磁
石、８・・・・・・枠状継鉄、１３・・・・・・陽極筒
体、１４・・・・・・金属管体、１６・・・・・・筒状
体、１７・・・・・・シールドケース。
代理人の氏名 弁理士 中尾敏男 ほか１名！ −マグ
ネトロン
２−ステム
４．６−壜擺片
５．７− 東大轟石
８− 神状遼炊
１３− 隔極笥体
／４−一金属管抹
第２図Fig. 1 is a partially cutaway side view of a magnetron device embodying the present invention, Fig. 2 is a partially cutaway side view of a conventional magnetron device, and Fig. 3 is a side sectional view of the cathode and cathode terminal lead-out portion of the same device. It is. 1... Magnetron, 2... Stem,
4, 6... Magnetic pole piece, 5, 7... Permanent magnet, 8... Frame yoke, 13... Anode cylinder, 14... ...Metal tube body, 16...Cylindrical body, 17...Shield case. Name of agent: Patent attorney Toshio Nakao and 1 other person! - Magnetron 2 - Stem 4.6 - Bottle piece 5.7 - Tokyo University Todoroki 8 - Divine Ryosui 13 - Separate pole enclosure / 4-1 Metal tube Figure 2
Claims (1)
前記開口端部から突出した金属管体に陰極端子導出用ス
テムを封着してなるマグネトロンと、前記磁極片に一方
の磁極を磁気的に結合した環状永久磁石と、この永久磁
石の他方の磁極を前記マグネトロンのいま一つの磁極片
に磁気的に結合するための枠状継鉄と、この枠状継鉄に
とりつけられて前記マグネトロンの陰極端子および同陰
極端子に接続されたＬＣフィルタ回路部品を収容する金
属製シールドケースと、前記金属管体に嵌着して前記永
久磁石を貫通するとともに前記枠状継鉄に電気的に接続
されて前記ステムを包囲する導電性筒状体とを備えてな
ることを特徴とするマグネトロン装置。A magnetron includes a cathode terminal lead-out stem sealed to a metal tube that covers a magnetic pole piece provided at one open end of an anode cylinder and protrudes from the open end, and one magnetic pole attached to the magnetic pole piece. a frame-shaped yoke for magnetically coupling the other magnetic pole of the permanent magnet to another magnetic pole piece of the magnetron; A metal shield case that houses a cathode terminal of the magnetron and an LC filter circuit component connected to the cathode terminal; and a conductive cylindrical body connected to the stem and surrounding the stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12758286A JPS62285345A (en) | 1986-06-02 | 1986-06-02 | Magnetron device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12758286A JPS62285345A (en) | 1986-06-02 | 1986-06-02 | Magnetron device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62285345A true JPS62285345A (en) | 1987-12-11 |
Family
ID=14963629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12758286A Pending JPS62285345A (en) | 1986-06-02 | 1986-06-02 | Magnetron device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62285345A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100399494C (en) * | 2003-06-30 | 2008-07-02 | 乐金电子(天津)电器有限公司 | Shielding structure of magnetron input part |
| US11231303B2 (en) * | 2020-02-25 | 2022-01-25 | Accurate Corrosion Control, Inc. | Test lead attachment assembly for metal pipes |
-
1986
- 1986-06-02 JP JP12758286A patent/JPS62285345A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100399494C (en) * | 2003-06-30 | 2008-07-02 | 乐金电子(天津)电器有限公司 | Shielding structure of magnetron input part |
| US11231303B2 (en) * | 2020-02-25 | 2022-01-25 | Accurate Corrosion Control, Inc. | Test lead attachment assembly for metal pipes |
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