JP3068324B2 - Straight beam microwave tube - Google Patents

Straight beam microwave tube

Info

Publication number
JP3068324B2
JP3068324B2 JP4114385A JP11438592A JP3068324B2 JP 3068324 B2 JP3068324 B2 JP 3068324B2 JP 4114385 A JP4114385 A JP 4114385A JP 11438592 A JP11438592 A JP 11438592A JP 3068324 B2 JP3068324 B2 JP 3068324B2
Authority
JP
Japan
Prior art keywords
electron beam
radiation fin
microwave tube
collector
cover
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 - Lifetime
Application number
JP4114385A
Other languages
Japanese (ja)
Other versions
JPH05334965A (en
Inventor
芳史 丸山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP4114385A priority Critical patent/JP3068324B2/en
Publication of JPH05334965A publication Critical patent/JPH05334965A/en
Application granted granted Critical
Publication of JP3068324B2 publication Critical patent/JP3068324B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、発生した熱を強制空冷
により放散させる手段を有する直進ビームマイクロ波管
に関し、特に熱を放散させる手段の構造の改良に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a straight beam microwave tube having means for dissipating generated heat by forced air cooling, and more particularly to an improvement in the structure of means for dissipating heat.

【0002】[0002]

【従来の技術】直進ビームマイクロ波管は、電子ビーム
を射出し形成する電子銃と、電子ビームと高周波電界と
の相互作用が行なわれる高周波回路部と、電子ビームを
捕捉し電子ビームの持つ運動エネルギーを熱エネルギー
に交換するコレクタとを主な構成要素としている。大電
力のマイクロ波管においては、直流入力電力が大きいた
めに、コレクタで発生する熱は膨大なものとなる。この
熱は熱伝導により熱を放散させる部分に導かれ、熱放散
部で強制空冷等の方法で放散される。この場合、熱を放
散させる部分の表面積は大きい方が熱は効率良く放散さ
れる。更に熱放散部の風量が大きい方が冷却効率は高く
なる。
2. Description of the Related Art A straight-beam microwave tube is an electron gun for emitting and forming an electron beam, a high-frequency circuit section in which an interaction between the electron beam and a high-frequency electric field is performed, The main component is a collector that exchanges energy for heat energy. In a high-power microwave tube, since the DC input power is large, the heat generated in the collector becomes enormous. This heat is guided to a portion where heat is dissipated by heat conduction, and is dissipated in the heat dissipating portion by a method such as forced air cooling. In this case, the heat is efficiently dissipated when the surface area of the heat dissipating portion is large. Furthermore, the larger the air volume of the heat dissipating part, the higher the cooling efficiency.

【0003】図3に従来の多空胴クライストロンの一例
を示す。電子銃1で射出形成された電子ビーム2は高周
波回路部3で高周波信号と相互作用し、高周波信号の増
幅を行ないコレクタ部12で収集される。コレクタ部1
2は、コレクタコア13と放熱フィン14と放熱フィン
カバー15から成り、従来の放熱フィン形状は図3
(c)に示すように板厚0.3〜1mmで下部B部がテ
ーパになっており通常コレクタコア13の周りに数十〜
数百枚ろう付される。また放熱フィンカバー15は放熱
フィン14の外周に装着され、長さl1 は放熱フィン1
4の片側の長さl2と同じ長さとなっている。
FIG. 3 shows an example of a conventional multi-cavity klystron. The electron beam 2 emitted by the electron gun 1 interacts with the high-frequency signal in the high-frequency circuit unit 3, amplifies the high-frequency signal, and is collected by the collector unit 12. Collector part 1
2 is composed of a collector core 13, a radiation fin 14, and a radiation fin cover 15;
As shown in (c), the lower part B is tapered at a plate thickness of 0.3 to 1 mm and usually several tens to
Hundreds of sheets are brazed. The radiation fin cover 15 is attached to the outer periphery of the radiation fin 14, and the length l 1 is
4 on one side has the same length as the length l 2.

【0004】[0004]

【発明が解決しようとする課題】この従来の直進ビーム
マイクロ波管では、コレクタ部において放熱フィンを1
枚ずつコレクタにろう付しなければならず。多大の時間
と労力を要していた。また、放熱フィン1枚の形状も下
部をテーパ状としなければならず、形状が複雑となると
ともに1枚の放熱フィンも高価なものとなり、これを数
十〜数百枚使用するので非常にコスト高となっていた。
また、放熱フィンの電子ビーム軸に平行な外周には全長
にわたって放熱フィンカバーが装着されており、冷却風
は、放熱フィンの電子ビーム上流側の間隙からしか流入
することができないため、通過する冷却風の圧力損失は
非常に高くなり、この圧力損失以上の圧力を発生するこ
とができる大型の冷却ブロアを必要としていた。
In this conventional straight beam microwave tube, one radiating fin is provided at the collector.
We have to braze the collectors one by one. It took a lot of time and effort. Also, the shape of one radiating fin must be tapered at the lower part, which makes the shape complicated and makes one radiating fin expensive. Had become high.
The outer circumference of the radiation fin parallel to the electron beam axis is full length
Cooling fin cover
Flows only from the gap on the electron beam upstream side of the radiation fin
Pressure loss of the passing cooling air
Very high and can generate a pressure higher than this pressure loss.
It needed a large cooling blower that could be used.

【0005】[0005]

【課題を解決するための手段】本発明の直進ビームマイ
クロ波管は、電子ビームを射出形成する電子銃と、電子
ビームと高周波信号を相互作用させる高周波回路部と、
電子ビームを捕捉するコレクタコアと、コレクタコアで
発生した熱を強制空冷により放散させる放熱フィンとを
有し、放熱フィンが折り返し構造となっており、かつ放
熱フィンの外側には、電子ビーム軸に沿った長さが、電
子ビーム上流側において放熱フィンより短くなっている
放熱フィンカバーを備えているとともに、放熱フィンカ
バーから電子ビーム上流側に露出する放熱フィンの外側
はカバーの装着面と平行して直線状に延在している
According to the present invention, there is provided a straight-beam microwave tube comprising: an electron gun for emitting an electron beam; a high-frequency circuit for causing the electron beam to interact with a high-frequency signal;
It has a collector core that captures the electron beam, and a radiating fin that dissipates the heat generated by the collector core by forced air cooling.The radiating fin has a folded structure. Along with the radiation fin cover, the length along the electron beam upstream side is shorter than the radiation fin ,
Outside of the radiation fin exposed to the electron beam upstream from the bar
Extend linearly in parallel with the mounting surface of the cover .

【0006】[0006]

【実施例】次に本発明について図面を参照して説明す
る。図1(a)は本発明の第1の実施例の断面図であ
り、図1(b)はその上面図を示す。コレクタ部4は、
コレクタコア5の外側に図1(b)に示すように折り返
し構造の1枚構造の放熱フィン6が巻かれてろう付さ
れ、放熱フィン6の外側には放熱フィンよりも垂直方向
の長さが短かい長さlの放熱フィンカバー7が装着され
た構造を有している。このような構造を有するので、部
品コストの低減ができ、さらにろう付作業が簡単になる
利点がある。また、この実施例のコレクタ部の構造で
は、冷却風の一部は矢印Aの方向からもコレクタ部に取
込まれる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1A is a sectional view of a first embodiment of the present invention, and FIG. 1B is a top view thereof. The collector unit 4
As shown in FIG. 1B, a single-piece heat radiation fin 6 having a folded structure is wound around the outside of the collector core 5 and brazed. It has a structure in which a radiation fin cover 7 having a short length 1 is mounted. With such a structure, there is an advantage that the cost of parts can be reduced and the brazing operation can be simplified. In the structure of the collector section of this embodiment, a part of the cooling air is also taken into the collector section from the direction of arrow A.

【0007】図2(a),(b)は、本発明の第2の実
施例を示す断面図と上面図である。この実施例では折り
返し構造の1枚の放熱フィン8,9が図2(b)に示す
ように2段にコレクタコア11に巻かれてろう付され、
その外側に放熱フィンカバー10,16を装着してい
る。これら折り返し構造の放熱フィンはルーバ成形法に
より製作可能である。
FIGS. 2A and 2B are a cross-sectional view and a top view showing a second embodiment of the present invention. In this embodiment, a single radiating fin 8, 9 having a folded structure is wound around the collector core 11 in two stages as shown in FIG.
Radiation fin covers 10 and 16 are mounted on the outside. The radiation fins having these folded structures can be manufactured by a louver molding method.

【0008】[0008]

【発明の効果】以上説明したように本発明の直進ビーム
マイクロ波管は、コレクタ部の放熱フィンを折り返し構
造としたので従来の1枚づつのろう付に比し、部品コス
トの低減がはかれるとともにろう付方法が容易になると
いう利点がある。また、放熱フィンカバーを放熱フィン
よりも短かくすることで、この部分からも冷却風を取り
入れることができ、コレクタ部の静圧を下げることが可
能となり冷却効率を高めることができるという利点があ
る。
As described above, in the straight beam microwave tube of the present invention, the radiation fins of the collector portion have a folded structure, so that the cost of parts can be reduced as compared with the conventional brazing of individual sheets. There is an advantage that the brazing method becomes easy. In addition, by making the heat radiation fin cover shorter than the heat radiation fin, cooling air can be taken in from this part as well, and the static pressure of the collector part can be reduced, and there is an advantage that the cooling efficiency can be increased. .

【図面の簡単な説明】[Brief description of the drawings]

【図1】(a),(b)は本発明の第1の実施例の断面
図と上面図である。
FIGS. 1A and 1B are a cross-sectional view and a top view of a first embodiment of the present invention.

【図2】(a),(b)は本発明の第2の実施例の断面
図と上面図である。
FIGS. 2A and 2B are a sectional view and a top view of a second embodiment of the present invention.

【図3】(a),(b)は従来の直進ビームマイクロ波
管の断面図を上面図であり、(c)は放熱フィンの平面
図である。
3 (a) and 3 (b) are top views of cross-sectional views of a conventional straight beam microwave tube, and FIG. 3 (c) is a plan view of a radiation fin.

【符号の説明】[Explanation of symbols]

1 電子銃 2 電子ビーム 3 高周波回路部 4,12,17 コレクタ部 5,11,13 コレクタコア 6,8,9,14 放熱フィン 7,10,15,16 放熱フィンカバー DESCRIPTION OF SYMBOLS 1 Electron gun 2 Electron beam 3 High frequency circuit part 4,12,17 Collector part 5,11,13 Collector core 6,8,9,14 Radiation fin 7,10,15,16 Radiation fin cover

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−285636(JP,A) 実開 昭52−34661(JP,U) 実開 昭62−123060(JP,U) 実開 昭60−166957(JP,U) 実開 昭54−54261(JP,U) 実開 平3−110748(JP,U) 実開 昭51−83258(JP,U) ──────────────────────────────────────────────────続 き Continued from the front page (56) References JP-A-61-285636 (JP, A) JP-A 52-34661 (JP, U) JP-A 62-123060 (JP, U) JP-A 60-123 166957 (JP, U) Japanese Utility Model Application No. 54-54261 (JP, U) Japanese Utility Model Application No. 3-110748 (JP, U) Japanese Utility Model Application No. 51-83258 (JP, U)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 電子ビームを射出し形成する電子銃部
と、電子ビームと高周波信号が相互作用する高周波回路
部と、前記電子ビームを捕捉するコレクタコアと、この
コレクタコアで発生した熱を冷却風が前記電子ビーム上
流側から下流側に流れる強制空冷により放散させる手段
を有する直進ビームマイクロ波管において、前記コレク
タコアにろう付けされる放熱フィンが折り返し構造とな
っており、かつ放熱フィンの外側に装着される放熱フィ
ンカバーの電子ビーム軸に沿った長さが、電子ビーム上
流側において放熱フィンより短く、かつ前記放熱フィン
カバーから前記電子ビーム上流側に露出する前記放熱フ
ィンの外側は前記カバーの装着面と平行して直線状に延
在していることを特徴とする直進ビームマイクロ波管。
1. An electron gun for emitting and emitting an electron beam, a high-frequency circuit for interacting with an electron beam and a high-frequency signal, a collector core for capturing the electron beam, and cooling generated by the collector core. Wind is above the electron beam
In a straight beam microwave tube having means for dissipating by forced air cooling flowing from a flow side to a downstream side, a radiation fin brazed to the collector core has a folded structure, and a radiation fin mounted outside the radiation fin is provided. The length of the fin cover along the electron beam axis is shorter than the radiation fin on the electron beam upstream side, and the outside of the radiation fin exposed to the electron beam upstream side from the radiation fin cover is parallel to the mounting surface of the cover. A straight beam microwave tube, which extends linearly.
JP4114385A 1992-05-07 1992-05-07 Straight beam microwave tube Expired - Lifetime JP3068324B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4114385A JP3068324B2 (en) 1992-05-07 1992-05-07 Straight beam microwave tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4114385A JP3068324B2 (en) 1992-05-07 1992-05-07 Straight beam microwave tube

Publications (2)

Publication Number Publication Date
JPH05334965A JPH05334965A (en) 1993-12-17
JP3068324B2 true JP3068324B2 (en) 2000-07-24

Family

ID=14636353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4114385A Expired - Lifetime JP3068324B2 (en) 1992-05-07 1992-05-07 Straight beam microwave tube

Country Status (1)

Country Link
JP (1) JP3068324B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08306320A (en) * 1995-04-28 1996-11-22 Nec Corp Collector of microwave tube

Also Published As

Publication number Publication date
JPH05334965A (en) 1993-12-17

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