JPS601732B2 - magnetron - Google Patents
magnetronInfo
- Publication number
- JPS601732B2 JPS601732B2 JP53132764A JP13276478A JPS601732B2 JP S601732 B2 JPS601732 B2 JP S601732B2 JP 53132764 A JP53132764 A JP 53132764A JP 13276478 A JP13276478 A JP 13276478A JP S601732 B2 JPS601732 B2 JP S601732B2
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- magnetron
- groove
- magnetic pole
- bulk getter
- 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.)
- Expired
Links
- 230000004907 flux Effects 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Microwave Tubes (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Description
【発明の詳細な説明】
本発明は、電子レンジ等に使用されるマグネトロンに関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetron used in microwave ovens and the like.
マグネトロンの管内、とくに陰極の近傍に、チタン、ジ
ルコニウムまたはタンタル等からなるバルグゲッタを設
けることが一般に行なわれている。It is common practice to provide a bulk getter made of titanium, zirconium, tantalum, or the like within the tube of a magnetron, particularly near the cathode.
かかるバルクゲツタは、高温に加熱されると吸蔵ガスを
排出するが、動作を終えたマグネトロンの管内に存在す
るガスを吸着するので、このマグネトロンを再度動作さ
せるとき、きわめて円滑に発振を開始させることができ
る。前記バルクゲッタは通常、リング状の板体からなり
、陰極端板の内面に溶接等の方法によりとりつけられて
いる。Such a bulk getter discharges the occluded gas when heated to a high temperature, but since it adsorbs the gas present in the tube of the magnetron that has finished operating, it is possible to start oscillation very smoothly when the magnetron is operated again. can. The bulk getter usually consists of a ring-shaped plate and is attached to the inner surface of the cathode plate by welding or the like.
このため、マグネトロンの動作時に陰極端板が高温にな
ると、両者の熱岬彰脹係数差によってバルクゲッタが反
曲し、陰極端板から脱落しやすくなる。また、陰極端板
に対して陰極の一端を鑑着するさい、バルクゲッタの表
面が鍵材によって汚されるという欠点もあった。本発明
は、前述のような従来の欠点を除去したマグネト。For this reason, when the cathode end plate becomes hot during operation of the magnetron, the bulk getter is bent due to the difference in the coefficient of thermal expansion between the two, making it easy to fall off from the cathode end plate. Another disadvantage is that when one end of the cathode is attached to the cathode plate, the surface of the bulk getter is contaminated by the key material. The present invention provides a magneto that eliminates the conventional drawbacks as described above.
ンを提供するものであり、これを以下図面に示した実施
例とともに説明する。第１図において、直熱形陰極１を
同軸的に収容した陽極筒体２は、その内周面に陰極１へ
向って突出する多数の陽極ベイン３を有し、一方の関口
端緑には第１の中空敵頭円錐状磁極片４を、そして、他
方の関口端縁には第２の中空教頭円錐状磁極片５をそれ
ぞれ封着している。This will be explained below along with the embodiments shown in the drawings. In FIG. 1, an anode cylinder 2 that coaxially accommodates a directly heated cathode 1 has a large number of anode vanes 3 protruding toward the cathode 1 on its inner circumferential surface. A first hollow head conical magnetic pole piece 4 is sealed, and a second hollow vice head conical magnetic pole piece 5 is sealed to the other edge of the entrance.
磁極片４の外端面に封着用金属環体６および絶縁環７を
介して突設された金属製排気管８は、陽極ベイン３に一
端を固着した電磁波導出用導体９の他端を固着し、排気
管８を覆う帽状金属体１川ま電磁波放射用アンテナとな
る。また、磁極片５の外端面に姿着用金属環１１を介し
て封着されたステム１２は、陰極１を支持しかつ陰極端
子を導出する。１３，１４は陰極端板を示す。A metal exhaust pipe 8 protrudes from the outer end surface of the magnetic pole piece 4 through a sealing metal ring 6 and an insulating ring 7, and has one end fixed to the anode vane 3 and the other end of the electromagnetic wave deriving conductor 9 fixed to the anode vane 3. , a cap-shaped metal body covering the exhaust pipe 8 serves as an antenna for radiating electromagnetic waves. Further, a stem 12, which is sealed to the outer end surface of the magnetic pole piece 5 via a metal ring 11, supports the cathode 1 and leads out a cathode terminal. 13 and 14 indicate cathode end plates.
また、第１および第２の中空戦頭円錐状磁極片４，５は
、その径大部外端面に対し励磁用の外部磁気回路が接続
されることにより磁束集中作用を営み、径小端面間の作
用空間に高磁束密度の磁界を形成する。以上の構成は従
来のマグネトロンと同様であるが、本発明ではとくに磁
極片４，５の各径４・端面における環状領域に凹溝１５
を有せしめ、この凹溝１５内に、第２図図示のように、
チタン、ジルコニウムまたはタンタル等からなる線状の
バルクゲッタ１６を埋入する。In addition, the first and second hollow warhead conical magnetic pole pieces 4 and 5 perform a magnetic flux concentration effect by connecting an external magnetic circuit for excitation to the outer end surfaces of their large diameter portions, and perform magnetic flux concentration between the small diameter end surfaces. A magnetic field with high magnetic flux density is formed in the working space of. The above configuration is the same as that of a conventional magnetron, but in the present invention, a concave groove 15 is provided in an annular region on each diameter 4 and end face of the magnetic pole pieces 4 and 5.
In this groove 15, as shown in FIG.
A linear bulk getter 16 made of titanium, zirconium, tantalum, or the like is embedded.
そして、第３図に示すように凹溝１５の閉口端緑１７を
かしめ加工により挟窄し、これによってバルクゲッ夕１
６を当該磁極片に係止させる。前記かしめ加工は、凹溝
１５の開口端緑１７の全域にわたって施す要はないが、
磁極片は通常、鉄からなるので比較的安易に狭窄できる
。Then, as shown in FIG.
6 to the magnetic pole piece. Although the caulking process does not need to be performed over the entire area of the open end green 17 of the groove 15,
Since magnetic pole pieces are usually made of iron, they can be narrowed relatively easily.
なお、前記実施例では、２個の磁極片にバルクゲッ夕を
設けたが、いずれか一方の磁極片のみにバルクゲッタを
設けてもよい。以上のように、本発明のマグネトロンに
おいては、バルクゲッタ１６の脱落が全くなく、しかも
機材によってバルクゲッ夕１６の表面を汚すこともなく
、旺盛なガス吸気作用を効率よく得ることができる。In the above embodiment, the bulk getter was provided on two magnetic pole pieces, but the bulk getter may be provided on only one of the magnetic pole pieces. As described above, in the magnetron of the present invention, the bulk getter 16 does not fall off at all, and the surface of the bulk getter 16 is not contaminated by equipment, and a vigorous gas intake action can be efficiently obtained.
第１図は本発明を実施したマグネトロンの側断面図、第
２図は同マグネトロンの要部のかしめ加工前の斜視図、
第３図は同要部のかしめ加工後の斜視図である。
１…・・・陰極、２・・・…陽極筒体、４，５…・・・
中空円錐状磁極片、１５・・・・・・凹溝、１６・・・
・・・バルクゲッタ、１７・・・・・・凹溝の閉口端緑
。
第１図
第２図
第３図Fig. 1 is a side sectional view of a magnetron embodying the present invention, Fig. 2 is a perspective view of the main parts of the magnetron before caulking,
FIG. 3 is a perspective view of the same main part after caulking. 1...Cathode, 2...Anode cylinder, 4, 5...
Hollow conical magnetic pole piece, 15...Concave groove, 16...
...Bulk getter, 17...The closed end of the concave groove is green. Figure 1 Figure 2 Figure 3
Claims (1)
の開口を蓋する関係に前記開口の端縁に封着されかつ磁
束集中作用を営む中空截頭円錐状磁極片が、その径小端
面における環状領域に前記陰極に向って開く凹溝を有し
、同凹溝内に埋入された線状のバルクゲツタは前記凹溝
の狭窄された開口端縁によって係止されていることを特
徴とするマグネトロン。1. A hollow truncated conical magnetic pole piece, which is sealed to the edge of at least one opening of the anode cylinder that coaxially accommodates the cathode and which performs a magnetic flux concentration function, is attached to the small diameter end face of the anode cylinder. The annular region has a groove that opens toward the cathode, and the linear bulk getter embedded in the groove is locked by the narrowed opening edge of the groove. magnetron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53132764A JPS601732B2 (en) | 1978-10-27 | 1978-10-27 | magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53132764A JPS601732B2 (en) | 1978-10-27 | 1978-10-27 | magnetron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5559635A JPS5559635A (en) | 1980-05-06 |
| JPS601732B2 true JPS601732B2 (en) | 1985-01-17 |
Family
ID=15088999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53132764A Expired JPS601732B2 (en) | 1978-10-27 | 1978-10-27 | magnetron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS601732B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6244817U (en) * | 1985-09-04 | 1987-03-18 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597551U (en) * | 1982-07-06 | 1984-01-18 | 松下電子工業株式会社 | magnetron |
| JP5311620B2 (en) * | 2008-03-19 | 2013-10-09 | パナソニック株式会社 | Magnetron |
-
1978
- 1978-10-27 JP JP53132764A patent/JPS601732B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6244817U (en) * | 1985-09-04 | 1987-03-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5559635A (en) | 1980-05-06 |
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