JPH06223730A - Anode body structure for magnetron - Google Patents
Anode body structure for magnetronInfo
- Publication number
- JPH06223730A JPH06223730A JP1035593A JP1035593A JPH06223730A JP H06223730 A JPH06223730 A JP H06223730A JP 1035593 A JP1035593 A JP 1035593A JP 1035593 A JP1035593 A JP 1035593A JP H06223730 A JPH06223730 A JP H06223730A
- Authority
- JP
- Japan
- Prior art keywords
- anode
- vane
- axial direction
- magnetron
- vanes
- 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.)
- Granted
Links
Landscapes
- Microwave Tubes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子レンジなどのマイ
クロ波加熱機器に用いられるマグネトロンの陽極構体に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anode assembly of a magnetron used for microwave heating equipment such as a microwave oven.
【０００２】[0002]
【従来の技術】一般に、マグネトロン用陽極構体は図５
に示すように構成されている。円筒状の陽極筒体１内に
は偶数枚の陽極ベイン２が軸心ａを中心に放射状に配列
され、これらの陽極ベイン２の陽極筒体軸方向（以下単
に軸方向と略す）両端面には溝３ａ，３ｂが形成されて
いる。そして、これらの溝３ａ，３ｂにそれぞれ大径の
均圧環４ａ，４ｂと小径の均圧環５ａ，５ｂとが互いに
対向されて陽極筒体１と同軸に配置され、大径の均圧環
４ａ，４ｂと小径の均圧環５ａ，５ｂとが陽極ベイン２
に対して交互に電気的に接続されている。ここで、均圧
環４ａ，４ｂ，５ａ，５ｂはその軸方向両端面が陽極ベ
イン２の軸方向両端面と同一面になるように取り付けら
れており、軸方向両端の均圧環４ａ，５ａと均圧環４
ｂ，５ｂとの軸方向内側端面間の距離Ｌｓが陽極ベイン
２の軸方向の寸法Ｈｖの約７５％ほどになるように構成
されている。また、陽極筒体１の両開口端縁には、中央
に孔が設けられた一対の略円錐台形状の磁極片６ａ，６
ｂが軸方向に相対向してそれぞれ気密に封着されてい
る。なお、７はアンテナリードで、陽極ベイン２の一つ
から導出されて出力部（図示せず）内に延設されてい
る。2. Description of the Related Art Generally, an anode assembly for a magnetron is shown in FIG.
It is configured as shown in. An even number of anode vanes 2 are radially arranged in the cylindrical anode cylinder 1 about an axis a, and the anode vanes 2 are provided on both end faces of the anode cylinder in the axial direction (hereinafter simply referred to as the axial direction). Are formed with grooves 3a and 3b. Then, large-diameter pressure equalizing rings 4a, 4b and small-diameter pressure equalizing rings 5a, 5b are opposed to each other in these grooves 3a, 3b and are arranged coaxially with the anode cylinder 1, and large-diameter equalizing rings 4a, 4b are arranged. And the small diameter equalizing rings 5a and 5b are the anode vanes 2.
Are alternately electrically connected to. Here, the pressure equalizing rings 4a, 4b, 5a, 5b are attached such that both axial end faces thereof are flush with the axial end faces of the anode vane 2, and the pressure equalizing rings 4a, 5a at both axial ends are equalized. Pressure ring 4
The distance Ls between the inner end faces in the axial direction of b and 5b is about 75% of the axial dimension Hv of the anode vane 2. In addition, a pair of substantially frustoconical magnetic pole pieces 6a, 6 each having a hole at the center thereof on both open end edges of the anode cylinder 1.
b are opposed to each other in the axial direction and are hermetically sealed. Reference numeral 7 is an antenna lead, which is led out from one of the anode vanes 2 and extends in an output portion (not shown).
【０００３】[0003]
【発明が解決しようとする課題】ところで、近年、マグ
ネトロンからの不要輻射、すなわち高調波成分や３０〜
９００ＭＨｚの比較的低い周波数成分の除去対策とし
て、特開昭６３−１１０５２７号公報に開示されている
方法などが提案されているが、近い将来導入される基本
波成分（帯域幅、およびサイドバンドレベル）の規制の
対策方法として配慮した例はない。By the way, in recent years, unnecessary radiation from the magnetron, that is, harmonic components and 30 to 30
A method disclosed in Japanese Patent Laid-Open No. 63-110527 has been proposed as a measure for removing a relatively low frequency component of 900 MHz. However, a fundamental wave component (bandwidth and sideband level) introduced in the near future is proposed. There is no example that considers it as a countermeasure method of the regulation of).
【０００４】つまり、従来構成のマグネトロン用陽極構
体では、均圧環４ａ，４ｂ，５ａ，５ｂの軸方向両外側
端面が陽極ベイン２の軸方向両端面と同一面になるよう
に取り付けられているため、軸方向両端の均圧環４ａ，
４ｂと均圧環５ａ，５ｂの間で生じる電界と、大小の均
圧環４ａ，５ａと均圧環４ｂ，５ｂ間で生じる電界との
差が大きくなって電界が不安定傾向となるとともに、均
圧環４ａ，４ｂ，５ａ，５ｂで生じる電界が陰極ｂと陽
極ベイン２との間の電子作用空間ｃに侵入して電子運動
の妨げとなる現象が生じており、この結果、サイドバン
ドが放射されるとともに基本波帯域幅が広くなってい
た。In other words, in the conventional magnetron anode structure, the pressure equalizing rings 4a, 4b, 5a, 5b are attached such that both axial end surfaces thereof are flush with both axial end surfaces of the anode vane 2. , Equalizing rings 4a at both ends in the axial direction,
4b and the pressure equalizing rings 5a, 5b and the electric field generated between the large and small pressure equalizing rings 4a, 5a and the pressure equalizing rings 4b, 5b become large and the electric field tends to be unstable, and the pressure equalizing ring 4a , 4b, 5a, 5b enter the electron action space c between the cathode b and the anode vane 2 to hinder the electron motion, and as a result, sidebands are emitted and The fundamental bandwidth was wide.
【０００５】本発明は上記問題を解決するもので、基本
波帯域幅を狭くでき、かつサイドバンドの放射量を低減
させることができるマグネトロン用陽極構体を提供する
ことを目的とするものである。The present invention solves the above problems, and an object of the present invention is to provide an anode assembly for a magnetron capable of narrowing the fundamental wave bandwidth and reducing the sideband radiation amount.
【０００６】[0006]
【課題を解決するための手段】上記問題を解決するため
に本発明の第１の手段は、陽極筒体内にこの軸心を中心
に偶数枚の陽極ベインが放射状に配列され、これらの陽
極ベインにおける陽極筒体中央からこの軸方向に離れて
いる両端面に溝がそれぞれ形成され、各溝にそれぞれ大
径の均圧環と小径の均圧環とが同軸心で互いに対向され
て配置され、大径の均圧環と小径の均圧環とが陽極ベイ
ンに交互に電気的に接続され、前記陽極ベインの１つか
らアンテナリードが導出されて出力部内に延設されてい
るマグネトロン用陽極構体において、均圧環の前記軸方
向外側両端面が、陽極ベインの前記軸方向の両端面より
もそれぞれ陽極筒体軸方向中央寄りである内側になるよ
うに溝を形成して均圧環を溝内に配置し、軸方向両端の
均圧環同士の軸方向内側端面間の距離が陽極ベインの軸
方向の寸法の６５％以下になるように構成したものであ
る。In order to solve the above problems, the first means of the present invention is to arrange an even number of anode vanes radially around the axis in the anode cylinder, and to arrange the anode vanes. Grooves are formed respectively on both end surfaces of the anode cylinder which are distant from the center of the anode cylinder in the axial direction, and a large-diameter equalizing ring and a small-diameter equalizing ring are coaxially arranged to face each other. In the anode structure for a magnetron, the equalizing ring and the equalizing ring of small diameter are alternately electrically connected to the anode vane, and the antenna lead is led out from one of the anode vanes and extended in the output part. The two axially outer end surfaces of the anode vane are formed so that the inner surfaces thereof are closer to the center of the anode cylinder in the axial direction than the both axial end surfaces of the anode vane, and the pressure equalizing ring is arranged in the groove. Axial direction between equalizing rings at both ends In which the distance between the inner end surface is configured to be less than 65% of the axial dimension of the anode vane.
【０００７】また、本発明の第２の手段は、上記第１の
手段において、アンテナリードを、大径の均圧環が結合
されていない側の陽極ベインより引き出してなるもので
ある。A second means of the present invention is the same as the first means, wherein the antenna lead is pulled out from the anode vane on the side to which the large diameter equalizing ring is not connected.
【０００８】また、本発明の第３の手段は、上記第１ま
たは第２の手段において、陽極ベインの軸方向寸法が陽
極ベインの陽極筒体軸心寄り側端縁が作る包絡線の直径
よりも大きくなるように構成したものである。A third means of the present invention is the above first or second means, wherein the axial dimension of the anode vane is larger than the diameter of the envelope formed by the edge of the anode vane on the side closer to the axis of the anode cylinder. Is also configured to be large.
【０００９】[0009]
【作用】上記第１の手段によれば、均圧環の軸方向外側
の端面が陽極ベインの軸方向の端面よりも内側に位置す
るため、均圧環で生じる電界の陰極と陽極ベインとの間
の電子作用空間への侵入が陽極ベインが壁となって阻止
され、シールド効果を生んで電子運動の妨げとなる現象
が抑制される。また、軸方向両端の均圧環の軸方向内側
端面間の距離が陽極ベインの軸方向寸法の６５％以下に
なるように構成したことにより、軸方向両端の均圧環の
間に生ずる電界と、大径の均圧環と小径の均圧環との間
に生ずる電界との差が、従来よりも小さくなるため、陽
極の軸方向の電界分布がより一定になって安定し、基本
波のサイドバンドの放射量が抑制される。According to the first means, since the axially outer end face of the pressure equalizing ring is located inside the axial end face of the anode vane, the electric field between the cathode and the anode vane of the electric field generated in the pressure equalizing ring is formed. The phenomenon that the anode vanes are blocked by the walls of the anode vanes from entering the electron action space, and the phenomenon that the shield effect is generated and the electron motion is hindered is suppressed. Further, since the distance between the axially inner end faces of the pressure equalizing rings at both ends in the axial direction is 65% or less of the axial dimension of the anode vane, an electric field generated between the pressure equalizing rings at both ends in the axial direction is large. Since the difference between the electric field generated between the diameter equalizing ring and the small diameter equalizing ring is smaller than in the past, the axial electric field distribution of the anode becomes more constant and stable, and the sideband radiation of the fundamental wave is stabilized. The amount is suppressed.
【００１０】また、上記第２の手段において、アンテナ
リードを、陽極ベインにおける大径の均圧環が陽極ベイ
ンに結合されていない側から引き出すことにより、陽極
ベインにおけるアンテナリードの接続部と大径の均圧環
の外周面との間に溝の空間が位置するため、均圧環近傍
の乱れた電界とアンテナリードとが結合しにくくなり、
より良い基本波スペクトラムを得ることが可能となる。In the second means, the antenna lead is pulled out from the side where the large-diameter equalizing ring in the anode vane is not connected to the anode vane, so that the antenna lead connecting portion in the anode vane has a large diameter. Since the space of the groove is located between the outer peripheral surface of the pressure equalizing ring, it is difficult to couple the disturbed electric field near the pressure equalizing ring and the antenna lead,
It is possible to obtain a better fundamental spectrum.
【００１１】さらに、上記第３の手段において、陽極ベ
インの軸方向寸法が陽極ベインの陽極筒体軸心寄り側端
縁が作る包絡線の直径よりも大きくなるように構成する
ことにより、陽極ベインの熱伝導率を向上させることが
でき、陽極ベインの急激な温度上昇を防止することがで
きる。Further, in the third means, the axial dimension of the anode vane is made larger than the diameter of the envelope formed by the edge of the anode vane on the side closer to the axis of the anode cylinder, whereby the anode vane is formed. It is possible to improve the thermal conductivity of the anode vane and prevent a rapid temperature rise of the anode vane.
【００１２】[0012]
【実施例】以下、本発明の一実施例を図面に基づき説明
する。なお、従来のものと同機能のものには同符号を付
して、その説明は省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In addition, the same reference numerals are given to those having the same functions as the conventional ones, and the description thereof is omitted.
【００１３】図１に示すように、偶数枚の陽極ベイン２
の陽極筒体軸心（ａ）方向（以下、単に軸方向という）
の両端面には溝１０ａ，１０ｂが深く形成され、この溝
１０ａ，１０ｂ内にそれぞれ大径の均圧環４ａ，４ｂと
小径の均圧環５ａ，５ｂとが互いに対向されて陽極筒体
と同軸に配置されて、均圧環４ａ，４ｂ，５ａ，５ｂの
軸方向外側の端面が陽極ベイン２の軸方向の端面よりも
内側（陽極ベイン２の軸方向中心寄り）に位置されてい
る。そして、軸方向両端の均圧環４ａ，５ａと均圧環４
ｂ，５ｂとの軸方向内側端面間の距離（以下、均圧環距
離と略す）Ｌｓが陽極ベイン２の軸方向の寸法Ｈｖの６
５％以下になるように構成されている。なお、従来と同
様に、大径の均圧環４ａ，４ｂと小径の均圧環５ａ，５
ｂとは陽極ベイン２に対して交互に電気的に接続されて
いる。As shown in FIG. 1, an even number of anode vanes 2 are provided.
Anode cylinder axis center (a) direction (hereinafter, simply referred to as axial direction)
Grooves 10a, 10b are deeply formed on both end faces of the anode, and large-diameter equalizing rings 4a, 4b and small-diameter equalizing rings 5a, 5b are opposed to each other in the grooves 10a, 10b so as to be coaxial with the anode cylinder. The end faces of the pressure equalizing rings 4a, 4b, 5a, 5b on the outside in the axial direction are located inside the end faces of the anode vane 2 in the axial direction (close to the axial center of the anode vane 2). The pressure equalizing rings 4a and 5a at both ends in the axial direction and the pressure equalizing ring 4
bs, 5b and the distance between the axially inner end faces (hereinafter abbreviated as a pressure equalizing ring distance) Ls is 6 of the axial dimension Hv of the anode vane 2.
It is configured to be 5% or less. As in the conventional case, the large diameter equalizing rings 4a and 4b and the small diameter equalizing rings 5a and 5b are used.
and b are alternately electrically connected to the anode vanes 2.
【００１４】さらに、アンテナリード７は、陽極ベイン
２における大径の均圧環４ａが陽極ベイン２に結合され
ていない側から引き出されている。上記構成において、
均圧環４ａ，４ｂ，５ａ，５ｂの軸方向外側の端面が陽
極ベイン２の軸方向の端面よりも内側に位置するように
均圧環４ａ，４ｂ，５ａ，５ｂが配設されているため、
均圧環４ａ，４ｂ，５ａ，５ｂで生じる電界の陰極ｂと
陽極ベイン２との間の電子作用空間ｃへの侵入が陽極ベ
イン２が壁となって阻止され、シールド効果を生んで電
子運動の妨げとなる現象が抑制される。このため電子運
動の乱れに起因する基本波成分の帯域幅を狭くすること
ができる。Further, the antenna lead 7 is drawn out from the side where the large diameter equalizing ring 4a of the anode vane 2 is not connected to the anode vane 2. In the above configuration,
Since the pressure equalizing rings 4a, 4b, 5a, 5b are arranged so that the axially outer end faces of the equalizing rings 4a, 4b, 5a, 5b are located inside the axial end faces of the anode vanes 2,
The anode vane 2 serves as a wall to prevent the electric field generated by the pressure-equalizing rings 4a, 4b, 5a, 5b from entering the electron action space c between the cathode b and the anode vane 2 and creates a shield effect to cause electron movement. The disturbing phenomenon is suppressed. Therefore, it is possible to narrow the bandwidth of the fundamental wave component caused by the disturbance of the electron motion.
【００１５】また、均圧環距離Ｌｓが陽極ベイン２の軸
方向の寸法Ｈｖの６５％以下になるように構成したこと
により、均圧環距離Ｌｓが従来よりも小さくなるため、
軸方向両端の均圧環４ａ，５ａと均圧環４ｂ，５ｂとの
間に生ずる電界は従来よりも大きくなり、この電界と、
大径の均圧環４ａ，４ｂと小径の均圧環５ａ，５ｂとの
間に生ずる電界との差は、従来よりも小さくなる。した
がって、陽極の軸方向の電界分布がより一定になって安
定し、図２の（ｃ）に示すように基本波のサイドバンド
の放射量が抑制される。なお、図２の（ａ）、図２の
（ｂ）はそれぞれ均圧環距離Ｌｓが陽極ベイン２の軸方
向寸法Ｈｖの７５％および７０％の場合の基本波スペク
トラム特性を示す図で、図２の（ｃ）に示すように均圧
環距離Ｌｓが陽極ベイン２の軸方向寸法Ｈｖの６５％で
ある場合はサイドバンドの放射量が良好に抑制されてい
ることがわかる。Further, since the pressure-equalizing ring distance Ls is configured to be 65% or less of the axial dimension Hv of the anode vane 2, the pressure-equalizing ring distance Ls becomes smaller than in the conventional case.
The electric field generated between the pressure equalizing rings 4a, 5a at both ends in the axial direction and the pressure equalizing rings 4b, 5b becomes larger than in the conventional case.
The difference between the electric field generated between the large-diameter pressure equalizing rings 4a and 4b and the small-diameter pressure equalizing rings 5a and 5b is smaller than in the conventional case. Therefore, the electric field distribution in the axial direction of the anode becomes more constant and stable, and the radiation amount of the sideband of the fundamental wave is suppressed as shown in FIG. 2A and 2B are diagrams showing fundamental wave spectrum characteristics when the pressure-equalizing ring distance Ls is 75% and 70% of the axial dimension Hv of the anode vane 2, respectively. As shown in (c), it can be seen that when the pressure-equalizing ring distance Ls is 65% of the axial dimension Hv of the anode vane 2, the radiation amount of the side band is suppressed well.
【００１６】さらに、アンテナリード７を、陽極ベイン
２における大径の均圧環４ａが陽極ベイン２に結合され
ていない側から引き出すことにより、陽極ベイン２にお
けるアンテナリード７の接続部と大径の均圧環４ａの外
周面との間に溝３ａの空間が位置し、また、上述のよう
に均圧環４ａ，４ｂ，５ａ，５ｂが陽極ベイン２の溝３
ａ，３ｂ内に深く埋設されて陽極ベイン２がシールドの
役割をするため、均圧環４ａ，４ｂ，５ａ，５ｂ近傍の
乱れた電界とアンテナリード７とが結合しにくくなり、
図３の（ｂ）に示すように、より良い基本波スペクトラ
ムを得ることが可能となった。なお、図３の（ａ）は、
アンテナリード７を、陽極ベイン２における大径の均圧
環４ａが陽極ベイン２に結合されている側から引き出し
た場合の基本波スペクトラム特性を示す図で、この場合
は基本波スペクトラムが不良であることがわかる。Further, by pulling out the antenna lead 7 from the side of the anode vane 2 where the large-diameter pressure equalizing ring 4a is not connected to the anode vane 2, the connection portion of the antenna lead 7 in the anode vane 2 and the large-diameter equalizer are made uniform. The space of the groove 3a is located between the pressure ring 4a and the outer peripheral surface of the pressure ring 4a.
Since the anode vane 2 is deeply embedded in a and 3b and serves as a shield, the disturbed electric field near the pressure equalizing rings 4a, 4b, 5a and 5b and the antenna lead 7 are less likely to be coupled,
As shown in FIG. 3B, a better fundamental spectrum can be obtained. In addition, (a) of FIG.
It is a figure which shows the fundamental wave spectrum characteristic at the time of drawing out the antenna lead 7 from the side where the large diameter equalization ring 4a in the anode vane 2 is couple | bonded with the anode vane 2. In this case, the fundamental wave spectrum is bad. I understand.
【００１７】なお、実験によれば均圧環間距離Ｌｓと陽
極ベイン２の軸方向寸法Ｈｖの関係は、図４に示すよう
にＬｓ／Ｈｖ比が５５％以下になると急激に軽負荷時の
温度試験にて陽極温度が上昇してしまい、また、陽極ベ
イン２の軸方向寸法Ｈｖを小さくすると、陽極の温度上
昇がさらに急激となる。したがって、陽極ベイン２の軸
方向寸法Ｈｖを陽極ベイン２の内周端面により作られる
包絡線直径Ｒ以上に設定して熱伝導率を向上させたり、
陽極筒体１の肉厚を大きくしたり、ラジエタ枚数を増加
させたりして冷却効率を向上させたりすることが必要に
なってくる。ここで、図４における実線部は陽極ベイン
２の軸方向長さＨｖが９．５mm，陽極ベイン２の内周端
面直径Ｒが９．０mmの場合を示し、また、図４における
一点鎖線部は陽極ベイン２の軸方向長さＨｖが８．５m
m，陽極ベイン２の内周端面直径Ｒが９．０mmの場合を
示す。図４に示すように、陽極ベイン２の軸方向寸法Ｈ
ｖを陽極ベイン２の内周端面により作られる包絡線直径
Ｒ以上に設定することにより、冷却効率が良好に向上し
て陽極の温度上昇が抑制される。According to the experiment, the relationship between the distance Ls between the pressure equalizing rings and the axial dimension Hv of the anode vane 2 is as shown in FIG. 4, when the Ls / Hv ratio becomes 55% or less, the temperature at a light load rapidly increases. The anode temperature rises in the test, and when the axial dimension Hv of the anode vane 2 is reduced, the temperature rise of the anode becomes more rapid. Therefore, the axial dimension Hv of the anode vane 2 is set to be equal to or larger than the envelope diameter R formed by the inner peripheral end surface of the anode vane 2 to improve the thermal conductivity,
It is necessary to increase the wall thickness of the anode cylinder 1 or increase the number of radiators to improve the cooling efficiency. Here, the solid line part in FIG. 4 shows the case where the axial length Hv of the anode vane 2 is 9.5 mm and the inner peripheral end face diameter R of the anode vane 2 is 9.0 mm, and the dashed line part in FIG. Axial length Hv of anode vane 2 is 8.5 m
m, the case where the inner peripheral end face diameter R of the anode vane 2 is 9.0 mm. As shown in FIG. 4, the axial dimension H of the anode vane 2 is
By setting v to be equal to or larger than the envelope diameter R formed by the inner peripheral end surface of the anode vane 2, the cooling efficiency is favorably improved and the temperature rise of the anode is suppressed.
【００１８】[0018]
【発明の効果】以上のように本発明によれば、均圧環の
前記軸方向外側両端面が、陽極ベインの前記軸方向の両
端面よりもそれぞれ陽極筒体軸方向中央寄りである内側
になるように均圧環を溝内に配置し、軸方向両端の均圧
環同士の軸方向内側端面間の距離が陽極ベインの軸方向
寸法の６５％以下になるように構成することにより、基
本波の帯域帯を狭くすることが可能となり、また、基本
波サイドバンドの放射量を低減することができる。そし
て、基本波をクリーンスペクトラムとすることができる
ため、出力部に設ける高調波抑制用チョークを簡素化で
きる。As described above, according to the present invention, both axially outer end surfaces of the pressure equalizing ring are located inside the anode vane axially centered with respect to the axial both end surfaces. By disposing the pressure equalizing rings in the groove in such a manner that the distance between the axially inner end faces of the pressure equalizing rings at both axial ends is 65% or less of the axial dimension of the anode vane, The band can be narrowed, and the radiation amount of the fundamental sideband can be reduced. Since the fundamental wave can have a clean spectrum, the harmonic suppressing choke provided in the output section can be simplified.
【００１９】また、アンテナリードを、陽極ベインにお
ける大径の均圧環が陽極ベインに結合されていない側か
ら引き出すことにより、均圧環近傍の乱れた電界とアン
テナリードとが結合しにくくなり、一層良い基本波スペ
クトラムを得ることが可能となる。Further, by pulling out the antenna lead from the side where the large-diameter pressure equalizing ring in the anode vane is not coupled to the anode vane, the disturbed electric field in the vicinity of the pressure equalizing ring is less likely to be coupled to the antenna lead, which is even better. It is possible to obtain the fundamental wave spectrum.
【００２０】さらに、陽極ベインの軸方向寸法が陽極ベ
インの陽極筒体軸心寄り側端縁が作る包絡線の直径より
も大きくなるように構成することにより、陽極ベインの
熱伝導率を向上させることができ、陽極ベインの急激な
温度上昇を防止することができる。Further, by making the axial dimension of the anode vane larger than the diameter of the envelope formed by the edge of the anode vane on the side closer to the axis of the anode cylinder, the thermal conductivity of the anode vane is improved. Therefore, it is possible to prevent the temperature of the anode vane from rising rapidly.
【図１】本発明の一実施例によるマグネトロン用陽極構
体の縦断面図FIG. 1 is a vertical sectional view of an anode assembly for a magnetron according to an embodiment of the present invention.
【図２】（ａ）〜（ｃ）はそれぞれＬｓ／Ｈｖの比率変
更時の基本波スペクトラム特性図2 (a) to (c) are fundamental wave spectrum characteristic diagrams when changing the Ls / Hv ratio, respectively.
【図３】（ａ），（ｂ）はそれぞれアンテナリード引き
出し方向の違いによる基本波スペクトラム特性図3 (a) and 3 (b) are fundamental wave spectrum characteristic diagrams depending on the difference in the antenna lead extraction direction, respectively.
【図４】Ｌｓ／Ｈｖの比率変更時の陽極温度特性図FIG. 4 Anode temperature characteristic diagram when changing the ratio of Ls / Hv
【図５】従来のマグネトロン用陽極構体の縦断面図FIG. 5 is a longitudinal sectional view of a conventional magnetron anode assembly.
１ 陽極筒体 ２ 陽極ベイン ３ 溝 ４ａ，４ｂ 大径の均圧環 ５ａ，５ｂ 小径の均圧環 ６ａ，６ｂ 磁極片 ７ アンテナリード Ｈｖ 陽極ベインの軸方向寸法 Ｌｓ 均圧環の軸方向内側端面間の距離 Ｒ 陽極ベインの内周端面により作られる包
絡線直径1 Anode cylinder 2 Anode vane 3 Grooves 4a, 4b Large diameter equalizing ring 5a, 5b Small diameter equalizing ring 6a, 6b Magnetic pole piece 7 Antenna lead Hv Axial dimension of anode vane Ls Distance between axially inner end faces of equalizing ring R Envelope diameter created by the inner peripheral end face of the anode vane
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平石 典男 大阪府門真市大字門真1006番地 松下電子 工業株式会社内 (72)発明者 綱川 豊 大阪府門真市大字門真1006番地 松下電子 工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Norio Hiraishi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electronics Industrial Co., Ltd. (72) Yutaka Tsunakawa 1006 Kadoma, Kadoma City Osaka Prefecture
Claims (3)
陽極ベインが放射状に配列され、これらの陽極ベインに
おける陽極筒体中央からこの軸方向に離れている両端面
に溝がそれぞれ形成され、各溝にそれぞれ大径の均圧環
と小径の均圧環とが同軸心で互いに対向されて配置さ
れ、大径の均圧環と小径の均圧環とが陽極ベインに交互
に電気的に接続され、前記陽極ベインの１つからアンテ
ナリードが導出されて出力部内に延設されているマグネ
トロン用陽極構体において、均圧環の前記軸方向外側両
端面が、陽極ベインの前記軸方向の両端面よりもそれぞ
れ陽極筒体軸方向中央寄りである内側になるように溝を
形成して均圧環を溝内に配置し、軸方向両端の均圧環同
士の軸方向内側端面間の距離が陽極ベインの軸方向の寸
法の６５％以下になるように構成したマグネトロン用陽
極構体。1. An even number of anode vanes are radially arranged around the axis of the anode cylinder, and grooves are formed on both end faces of the anode vane which are apart from the center of the anode cylinder in the axial direction. In each groove, a large diameter equalizing ring and a small diameter equalizing ring are coaxially opposed to each other, and the large diameter equalizing ring and the small diameter equalizing ring are electrically connected alternately to the anode vanes. In the anode structure for a magnetron in which an antenna lead is led out from one of the anode vanes and extends in the output section, the axially outer end surfaces of the pressure equalizing ring are more than the axial end surfaces of the anode vane. Grooves are formed so that they are on the inner side, which is closer to the center in the axial direction of the anode cylinder, and the pressure-equalizing rings are arranged in the grooves. Less than 65% of the size An anode assembly for a magnetron configured as described above.
されていない側の陽極ベインより引き出してなる請求項
１記載のマグネトロン用陽極構体。2. The anode assembly for a magnetron according to claim 1, wherein the antenna lead is drawn out from the anode vane on the side to which the large diameter equalizing ring is not connected.
陽極筒体軸心寄り側端縁が作る包絡線の直径よりも大き
くなるように構成した請求項１または２記載のマグネト
ロン用陽極構体。3. The anode assembly for a magnetron according to claim 1, wherein the axial dimension of the anode vane is larger than the diameter of the envelope formed by the edge of the anode vane on the side closer to the axis of the anode cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01035593A JP3219517B2 (en) | 1993-01-26 | 1993-01-26 | Anode structure for magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01035593A JP3219517B2 (en) | 1993-01-26 | 1993-01-26 | Anode structure for magnetron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06223730A true JPH06223730A (en) | 1994-08-12 |
| JP3219517B2 JP3219517B2 (en) | 2001-10-15 |
Family
ID=11747877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01035593A Expired - Fee Related JP3219517B2 (en) | 1993-01-26 | 1993-01-26 | Anode structure for magnetron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3219517B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1594152A2 (en) * | 2004-03-11 | 2005-11-09 | Toshiba Hokuto Electronics Corporation | Magnetron for microwave oven. |
-
1993
- 1993-01-26 JP JP01035593A patent/JP3219517B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1594152A2 (en) * | 2004-03-11 | 2005-11-09 | Toshiba Hokuto Electronics Corporation | Magnetron for microwave oven. |
| EP1594152A3 (en) * | 2004-03-11 | 2006-11-08 | Toshiba Hokuto Elect Corp | Magnetron for microwave oven. |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3219517B2 (en) | 2001-10-15 |
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