JPH0145935B2 - - Google Patents
Info
- Publication number
- JPH0145935B2 JPH0145935B2 JP14466185A JP14466185A JPH0145935B2 JP H0145935 B2 JPH0145935 B2 JP H0145935B2 JP 14466185 A JP14466185 A JP 14466185A JP 14466185 A JP14466185 A JP 14466185A JP H0145935 B2 JPH0145935 B2 JP H0145935B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- magnetron
- cooling fins
- fins
- magnets
- 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
- 238000001816 cooling Methods 0.000 claims description 30
- 230000000694 effects Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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
- H01J23/005—Cooling methods or arrangements
Landscapes
- Microwave Tubes (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は冷却風が管軸方向に送風される縦吹冷
却構造内磁形マグネトロンに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an internal magnetron with a vertical cooling structure in which cooling air is blown in the direction of the tube axis.
従来のかかるマグネトロンは、第１図に示すよ
うにマグネトロン本体（図示せず）の上下に上マ
グネツト１、下マグネツト２を配設し、これらマ
グネツト１，２を外側より磁気回路を構成する上
ヨーク３と下ヨーク４で挾持固定し、更にマグネ
トロン本体の外周に配設した冷却フイン５にダク
ト６を巻付け、ダクト６の外周にバンド７を締付
け固定している。なお、８はフイルターケースを
示す。
As shown in FIG. 1, such a conventional magnetron has an upper magnet 1 and a lower magnet 2 disposed above and below a magnetron body (not shown), and these magnets 1 and 2 are connected from the outside to an upper yoke that forms a magnetic circuit. 3 and a lower yoke 4, a duct 6 is wrapped around cooling fins 5 disposed around the outer periphery of the magnetron body, and a band 7 is tightened and fixed around the outer periphery of the duct 6. Note that 8 indicates a filter case.
しかるに、冷却フイン５は組立時で治具で位置
決めされるが、バンド７の締付けにより、またマ
グネトロン動作中において冷却フイン５の熱膨張
により、軸方向に変動してマグネツト１，２に接
触することがある。このように冷却フイン５がマ
グネツト１，２に接触すると、冷却フイン５の温
度が直接マグネツト１，２に伝熱されてマグネツ
ト温度が高くなり、マグネツト１，２の温度係数
により磁力が低下し、この結果オーブン出力ドリ
フトが大幅に悪化する。 However, although the cooling fins 5 are positioned using a jig during assembly, they may move in the axial direction and come into contact with the magnets 1 and 2 due to the tightening of the band 7 or due to thermal expansion of the cooling fins 5 during magnetron operation. There is. When the cooling fin 5 contacts the magnets 1 and 2 in this way, the temperature of the cooling fin 5 is directly transferred to the magnets 1 and 2, increasing the magnet temperature, and the magnetic force decreases due to the temperature coefficient of the magnets 1 and 2. This results in significantly worse oven output drift.
また、その他に冷却フインが直前マグネツトに
接触している公知例として実開昭52−46660号
（図示せず）および冷却フインを突起により移動
防止した特開昭56−153645号（図示せず）等があ
る。 Other known examples include Utility Model Application Publication No. 52-46660 (not shown) in which the cooling fin is in contact with the magnet immediately before the cooling fin, and Japanese Patent Application Publication No. 56-153645 (not shown) in which the cooling fin is prevented from moving by protrusions. etc.
そこで、本発明の目的は冷却フインとマグネツ
トの接触を防止し、マグネツト温度を下げ、出力
ドリフトを大幅に改良させることができるマグネ
トロンを提供することにある。
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a magnetron that can prevent the cooling fins from coming into contact with the magnet, lower the magnet temperature, and significantly improve output drift.
ヨークの切欠きに冷却フインを係合させてマグ
ネツトに接触しないようにし、冷却フインからの
温度がマグネツトに伝わらないようにするもので
ある。
The cooling fins are engaged with the notches in the yoke so as not to contact the magnets, thereby preventing the temperature from the cooling fins from being transmitted to the magnets.
以下、本発明を図示の実施例により説明する。 Hereinafter, the present invention will be explained with reference to illustrated embodiments.
第２図は本発明になるマグネトロンの一実施例
を示す。なお、第１図と同じ部材には同一符号を
付しその説明を省略する。第３図に示すように下
ヨーク４１の側面に冷却フイン５が係合する切欠
き４１ａを設け、第２図に示すように切欠き４１
ａに冷却フイン５の端部を係合させて組立してな
る。 FIG. 2 shows an embodiment of the magnetron according to the present invention. Note that the same members as in FIG. 1 are designated by the same reference numerals, and their explanations will be omitted. As shown in FIG. 3, a notch 41a with which the cooling fin 5 engages is provided on the side surface of the lower yoke 41, and as shown in FIG.
It is assembled by engaging the ends of the cooling fins 5 with a.
このように令却フイン５は下ヨーク４１の切欠
き４１ａに係合しているので、冷却フイン５の位
置出し組立精度に頼らず、構造的に位置出しでき
る。このため、バンド７の締付けによつて、また
動作中における冷却フイン５の熱膨張によつて、
冷却フイン５が軸方向に位置ずれすることがな
く、マグネツト１，２への接触は防止される。第
４図は、従来のマグネトロンを示す第１図ｂのＡ
−A′断面図を示す。冷却フイン５のフインは５
ａ，５ｂ…５ｔと計20個形成されている。図中１
０はマグネトロンのアノードシリンダーを示す。 Since the cooling fins 5 are engaged with the notches 41a of the lower yoke 41 in this manner, the cooling fins 5 can be structurally positioned without relying on the accuracy of positioning and assembly. Therefore, due to the tightening of the band 7 and the thermal expansion of the cooling fins 5 during operation,
The cooling fins 5 are not displaced in the axial direction and are prevented from contacting the magnets 1 and 2. Figure 4 is A of Figure 1b showing a conventional magnetron.
-A′ cross-sectional view is shown. Cooling fin 5 has 5 fins.
A, 5b...5t, a total of 20 pieces are formed. 1 in the diagram
0 indicates the anode cylinder of the magnetron.
一方第５図は、本発明になるマグネトロンの一
実施例を示す第２図Ａ−A′断面図を示す。下ヨ
ーク４１の側面端に冷却フイン５が係合する切欠
き４１ａを４個所設けているので、これらの切欠
き４１ａに係合するフイン５ｕ，５ｖ，５ｗ，５
ｘの４個分だけ、第４図における場合よりフイン
の数を増すことが出来、冷却フイン５の面積が従
来に比して増加し、冷却効果が向上する。 On the other hand, FIG. 5 shows a sectional view taken along line A-A' in FIG. 2, showing an embodiment of the magnetron according to the present invention. Since the lower yoke 41 has four notches 41a in which the cooling fins 5 engage, the fins 5u, 5v, 5w, and 5 engage in the notches 41a.
The number of fins can be increased by 4 x compared to the case in FIG. 4, the area of the cooling fins 5 is increased compared to the conventional one, and the cooling effect is improved.
以上の説明から明らかな如く、本発明によれ
ば、マグネツトと冷却フインの接触が防止でき、
同時に冷却フインの広がり面積も増加するので、
出力ドリフトおよび冷却効率が向上する。
As is clear from the above description, according to the present invention, contact between the magnet and the cooling fin can be prevented;
At the same time, the spread area of the cooling fins increases, so
Improved power drift and cooling efficiency.
第１図は従来のマグネトロンを示し、ａは上面
図、ｂは一部切欠き正面図、第２図は本発明にな
るマグネトロンの一実施例を示す一部切欠き正面
図、第３図は第２図の下ヨークを示し、ａは正面
図、ｂは側面図、第４図は第１図ｂのＡ−A′断
面図、第５図は第２図のＡ−A′断面図である。
４１……下ヨーク、４１ａ……切欠き、５……
冷却フイン。
Fig. 1 shows a conventional magnetron, in which a is a top view, b is a partially cutaway front view, Fig. 2 is a partially cutaway front view showing an embodiment of the magnetron according to the present invention, and Fig. 3 is a partially cutaway front view. Fig. 2 shows the lower yoke, a is a front view, b is a side view, Fig. 4 is a sectional view taken along line A-A' in Fig. 1 b, and Fig. 5 is a sectional view taken along line A-A' in Fig. 2. be. 41...lower yoke, 41a...notch, 5...
cooling fins.
Claims (1)
内磁形マグネトロンにおいて、磁気回路を構成す
るヨークの側面端に切欠きを設け、この切欠き
に、マグネトロン本体の外周に配設された冷却フ
インの上下端部を係合させてなるマグネトロン。1. In an internal magnetic type magnetron with a vertical cooling structure in which cooling air is blown in the direction of the tube axis, a notch is provided at the side end of the yoke that constitutes the magnetic circuit, and a A magnetron made by engaging the upper and lower ends of cooling fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14466185A JPS6116445A (en) | 1985-07-03 | 1985-07-03 | magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14466185A JPS6116445A (en) | 1985-07-03 | 1985-07-03 | magnetron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6116445A JPS6116445A (en) | 1986-01-24 |
| JPH0145935B2 true JPH0145935B2 (en) | 1989-10-05 |
Family
ID=15367281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14466185A Granted JPS6116445A (en) | 1985-07-03 | 1985-07-03 | magnetron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6116445A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04327065A (en) * | 1991-04-24 | 1992-11-16 | Aisin Seiki Co Ltd | Seal member in reservoir tank |
-
1985
- 1985-07-03 JP JP14466185A patent/JPS6116445A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6116445A (en) | 1986-01-24 |
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