JPH06139946A - Magnetron for microwave oven - Google Patents
Magnetron for microwave ovenInfo
- Publication number
- JPH06139946A JPH06139946A JP28743592A JP28743592A JPH06139946A JP H06139946 A JPH06139946 A JP H06139946A JP 28743592 A JP28743592 A JP 28743592A JP 28743592 A JP28743592 A JP 28743592A JP H06139946 A JPH06139946 A JP H06139946A
- Authority
- JP
- Japan
- Prior art keywords
- resonance frequency
- magnetron
- microwave oven
- vane
- group
- 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
- 230000000694 effects Effects 0.000 abstract description 7
- 230000000630 rising effect Effects 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 2
Landscapes
- Microwave Tubes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明はライジングサン型の電
子レンジ用マグネトロンに係わり、特にそのベインの改
良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rising sun type magnetron for microwave oven, and more particularly to improvement of its vane.
【０００２】[0002]
【従来の技術】従来、ライジングサン型の電子レンジ用
マグネトロンの陽極構体は図５および図６に示すように
構成され、陽極円筒１の内側に複数のＵ字状ベイン２が
放射状に配設され、共振回路を構成している。そして、
Ｕ字状ベイン２の内側で高い共振周波数の空胴３群が構
成され、隣り合うＵ字状ベイン２相互間で低い共振周波
数の空胴４群が構成され、両者が交互に配置されてい
る。この場合、各ベインつまり高い共振周波数の空胴３
のベイン２と低い共振周波数の空胴４のベイン２の高さ
ｈは、ベイン２の内端２ａ側から外端２ｂ側まで一定寸
法である。又、陽極円筒１の軸心から低い共振周波数の
空胴４のベイン２の外端２ｂまでの寸法ｒVLは、陽極円
筒１の軸心から高い共振周波数の空胴３のベイン２の外
端２ｃまでの寸法ｒVHより大きい寸法である。2. Description of the Related Art Conventionally, an anode assembly of a rising sun type magnetron for a microwave oven is constructed as shown in FIGS. 5 and 6, and a plurality of U-shaped vanes 2 are radially arranged inside an anode cylinder 1. , Constitutes a resonance circuit. And
Inside the U-shaped vane 2, a group of cavities 3 having a high resonance frequency is formed, and between adjacent U-shaped vanes 2 is formed a group of 4 cavities having a low resonance frequency, and both groups are alternately arranged. . In this case, each vane, that is, the cavity 3 having a high resonance frequency,
The height h of the vane 2 and the vane 2 of the cavity 4 having a low resonance frequency are constant from the inner end 2a side to the outer end 2b side of the vane 2. In addition, the dimension r VL from the axis of the anode cylinder 1 to the outer end 2b of the vane 2 of the cavity 4 having a low resonance frequency is determined by the outer end of the vane 2 of the cavity 3 having a high resonance frequency from the axis of the anode cylinder 1. It is larger than the dimension r VH up to 2c.
【０００３】[0003]
【発明が解決しようとする課題】上記のような従来の電
子レンジ用マグネトロンにおいて、低い共振周波数の空
胴４の共振周波数ｆL と高い共振周波数の空胴３の共振
周波数ｆH との幾何平均にほぼ等しい値が、大小共振回
路全体の共振周波数ｆO となる。そして、発振を安定さ
せるには、このｆH ／ｆO を出来るだけ大きくしなけれ
ばならない。又、低い共振周波数の空胴４のインダクタ
ンスをＬL 、静電容量をＣL とすれば、In the conventional magnetron for a microwave oven as described above, the geometric mean of the resonance frequency f L of the cavity 4 having a low resonance frequency and the resonance frequency f H of the cavity 3 having a high resonance frequency is obtained. The value approximately equal to the value becomes the resonance frequency f O of the entire large and small resonance circuit. Then, in order to stabilize the oscillation, this f H / f O must be made as large as possible. If the inductance of the cavity 4 having a low resonance frequency is L L and the capacitance is C L ,
【０００４】[0004]
【数１】 [Equation 1]
【０００５】であり、管軸から低い共振周波数の空胴４
のベイン外端までの寸法ｒVLは大きくなる。即ち、陽極
円筒１の外径ｇが大きくなる。従って、従来の構造では
陽極円筒１およびベイン２が大形となり、省資源効果が
少ない。And a cavity 4 having a low resonance frequency from the tube axis.
The dimension r VL to the outer end of the vane becomes large. That is, the outer diameter g of the anode cylinder 1 becomes large. Therefore, in the conventional structure, the anode cylinder 1 and the vane 2 are large, and the resource saving effect is small.
【０００６】この発明は、以上のような不都合を解消し
たもので、負荷安定度を改善しつつ大幅な小形化を図
り、省資源効果を得ることが出来る電子レンジ用マグネ
トロンを提供することを目的とする。The present invention has solved the above-mentioned inconveniences, and an object thereof is to provide a magnetron for a microwave oven in which load stability can be improved and size can be greatly reduced, and resource saving effect can be obtained. And
【０００７】[0007]
【課題を解決するための手段】この発明は、陽極円筒の
内側に複数のＵ字状ベインがその開口部が陽極円筒の軸
心に向くように放射状に配設され、このＵ字状ベインの
内側で高い共振周波数の空胴群を構成し、隣り合うＵ字
状ベイン相互間で低い共振周波数の空胴群を構成してな
る電子レンジ用マグネトロンにおいて、低い共振周波数
の空胴群を構成するベインの外端側の高さが内端側の高
さよりも低く設定されてなる電子レンジ用マグネトロン
である。SUMMARY OF THE INVENTION According to the present invention, a plurality of U-shaped vanes are radially arranged inside an anode cylinder such that their openings are oriented toward the axis of the anode cylinder. In a magnetron for a microwave oven, which comprises a cavity group having a high resonance frequency inside and a cavity group having a low resonance frequency between adjacent U-shaped vanes, a cavity group having a low resonance frequency is constituted. A magnetron for a microwave oven, wherein the height of the vane on the outer end side is set lower than the height on the inner end side.
【０００８】又、この発明は、陽極円筒の内側に複数の
Ｕ字状ベインがその開口部が陽極円筒の軸心に向くよう
に放射状に配設され、このＵ字状ベインの内側で高い共
振周波数の空胴群を構成し、隣り合うＵ字状ベイン相互
間で低い共振周波数の空胴群を構成してなる電子レンジ
用マグネトロンにおいて、各ベインの外端側の高さが内
端側の高さよりも低く設定されてなる電子レンジ用マグ
ネトロンである。Further, according to the present invention, a plurality of U-shaped vanes are radially arranged inside the anode cylinder such that the openings thereof are oriented toward the axis of the anode cylinder, and high resonance occurs inside the U-shaped vanes. In a magnetron for a microwave oven, which constitutes a cavity group having a frequency and a cavity group having a low resonance frequency between adjacent U-shaped vanes, the height of each vane on the outer end side is equal to that on the inner end side. It is a magnetron for microwave oven that is set lower than the height.
【０００９】[0009]
【作用】この発明によれば、負荷安定度を改善しつつ大
幅な小形化を図り、省資源効果を得ることが出来る。According to the present invention, the load stability can be improved, the size can be greatly reduced, and the resource saving effect can be obtained.
【００１０】[0010]
【実施例】以下、図面を参照して、この発明の２つの実
施例を詳細に説明する。 （第１の実施例）DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Two embodiments of the present invention will be described in detail below with reference to the drawings. (First embodiment)
【００１１】請求項１に対応するライジングサン型の電
子レンジ用マグネトロンは、図１および図２に示すよう
に構成され、陽極円筒１１の内側に複数のＵ字状ベイン
１２がその開口部が陽極円筒１１の軸心に向くように放
射状に配設され、Ｕ字状底部が陽極円筒１１内壁に固着
されている。A rising sun type magnetron for a microwave oven according to claim 1 is constructed as shown in FIGS. 1 and 2, and a plurality of U-shaped vanes 12 are provided inside an anode cylinder 11 and the openings thereof are anodes. The cylinders 11 are radially arranged so as to face the axis of the cylinder 11, and the U-shaped bottom portion is fixed to the inner wall of the anode cylinder 11.
【００１２】この場合、Ｕ字状ベイン１２の内側で高い
共振周波数の空胴１３群が構成され、隣り合うＵ字状ベ
イン１２相互間で低い共振周波数の空胴１４群が構成さ
れ、両者が交互に配置されている。更に、低い共振周波
数の空胴１４群を構成するベイン１２の外端１２ｂ側の
高さが内端１２ａ側の高さよりも低く設定されている。
即ち、管軸から低い共振周波数の空胴１４のベイン１
２の外端１２ｂまでの寸法ＲVLと管軸から高い共振周波
数の空胴１３のベイン１２の外端１２ｃまでの寸法ＲVH
との差の寸法Ｉの部分、又はこの寸法Ｉの一部分のベイ
ン１２の高さ寸法Ｈ2 がベイン１２の内端１２ａの高さ
寸法Ｈ1 よりも小さい寸法である。In this case, a group of cavities 13 having a high resonance frequency is formed inside the U-shaped vane 12, and a group of cavities 14 having a low resonance frequency is formed between the adjacent U-shaped vanes 12 and both of them are formed. They are arranged alternately. Further, the height of the vane 12 forming the group of cavities 14 having a low resonance frequency on the outer end 12b side is set lower than the height on the inner end 12a side.
That is, the vane 1 of the cavity 14 having a low resonance frequency from the tube axis.
Dimension R VH from the dimension R VL and the tube axis to the second outer end 12b to the outer end 12c of the vane 12 of the cavity 13 of the high resonant frequency
The height dimension H 2 of the vane 12 at a portion of the dimension I or a portion of the dimension I is smaller than the height dimension H 1 of the inner end 12a of the vane 12.
【００１３】さて、高い共振周波数の空胴１３の共振周
波数をｆH とし、共振回路全体の共振周波数ｆO とした
場合、発振を安定させるには、ｆH ／ｆO を１．０以上
にしなければならず、又、管軸から低い共振周波数の空
胴１４のベイン外端１２ｂまでの寸法ＲVLを大きくし、
低い共振周波数の空胴１４の共振周波数ｆL を小さくし
なければならない。そして、既述のようにWhen the resonance frequency of the cavity 13 having a high resonance frequency is f H and the resonance frequency of the entire resonance circuit is f O , f H / f O should be 1.0 or more in order to stabilize the oscillation. It is necessary to increase the dimension R VL from the tube axis to the vane outer end 12b of the cavity 14 having a low resonance frequency.
The resonance frequency f L of the cavity 14 having a low resonance frequency must be reduced. And as mentioned above
【００１４】[0014]
【数２】 [Equation 2]
【００１５】であり、寸法ＲVLを大きくすることなく、
低い共振周波数の空胴１４のインダクタンスＬL を大き
くすることが出来、低い共振周波数の空胴１４の共振周
波数ｆL を小さく出来る。その結果、陽極円筒１１の外
径Ｇを大きくすることなく、陽極円筒１１，ベイン１２
が小形となり、省資源効果を得ることが出来る。 （第２の実施例）And without increasing the dimension R VL ,
The inductance L L of the cavity 14 having a low resonance frequency can be increased, and the resonance frequency f L of the cavity 14 having a low resonance frequency can be reduced. As a result, without increasing the outer diameter G of the anode cylinder 11, the anode cylinder 11 and the vane 12
The size is small, and the resource saving effect can be obtained. (Second embodiment)
【００１６】請求項２に対応するライジングサン型の電
子レンジ用マグネトロンは、図３および図４に示すよう
に構成され、陽極円筒２１の内側に複数のＵ字状ベイン
２２がその開口部が陽極円筒２１の軸心に向くように放
射状に配設され、Ｕ字状底部が陽極円筒２１内壁に固着
されている。A rising sun type magnetron for a microwave oven according to a second aspect of the present invention is constructed as shown in FIGS. 3 and 4, and a plurality of U-shaped vanes 22 are provided inside the anode cylinder 21 and the openings thereof are anodes. The cylinders 21 are radially arranged so as to face the axis of the cylinder 21, and the U-shaped bottom portion is fixed to the inner wall of the anode cylinder 21.
【００１７】この場合、Ｕ字状ベイン２２の内側で高い
共振周波数の空胴２３群が構成され、隣り合うＵ字状ベ
イン２２相互間で低い共振周波数の空胴２４群が構成さ
れ、両者が交互に配置されている。更に、低い共振周波
数の空胴２４群を構成するベイン２２の外端２２ｂ側の
高さが内端２２ａ側の高さよりも低く設定され、且つ、
高い共振周波数の空胴２３群を構成するベイン２２の外
端２２ｃ側の高さが内端２２ａ側の高さよりも低く設定
されており、第１の実施例と同様効果が得られる。 即
ち、寸法ＲVLと寸法ＲVHとの差の寸法Ｉの部分のみなら
ず、管軸から高い共振周波数の空胴２３のベイン２２の
外端２２ｃまでの寸法ＲVHの一部分Ｊのベイン２２の高
さ寸法Ｈ2 がベイン２２の内端２２ａの高さ寸法Ｈ1 よ
りも小さい寸法である。In this case, a group of cavities 23 having a high resonance frequency is formed inside the U-shaped vane 22, and a group of cavities 24 having a low resonance frequency is formed between adjacent U-shaped vanes 22. They are arranged alternately. Further, the height of the vane 22 forming the group of cavities 24 having a low resonance frequency on the outer end 22b side is set lower than the height on the inner end 22a side, and
The height of the vane 22 forming the group of cavities 23 having a high resonance frequency on the outer end 22c side is set lower than the height on the inner end 22a side, and the same effect as in the first embodiment can be obtained. That is, not only the part of the size I of the difference between the size R VL and the size R VH , but also the part of the vane 22 of the part J of the size R VH from the tube axis to the outer end 22c of the vane 22 of the cavity 23 having a high resonance frequency. The height dimension H 2 is smaller than the height dimension H 1 of the inner end 22a of the vane 22.
【００１８】[0018]
【発明の効果】以上説明したようにこの発明によれば、
低い共振周波数の空胴群を構成するベインの外端側の高
さが内端側の高さよりも低く設定されているので、負荷
安定度を改善しつつ大幅な小形化を図り、省資源効果を
得ることが出来る。As described above, according to the present invention,
The height of the vanes that make up the cavity group with a low resonance frequency is set lower than the height of the inner ends, so the load stability is improved and the size is significantly reduced, resulting in a resource saving effect. Can be obtained.
【図１】請求項１に対応する電子レンジ用マグネトロン
の陽極構体を示す平面図。FIG. 1 is a plan view showing an anode structure of a magnetron for a microwave oven according to claim 1. FIG.
【図２】図１のＡ−Ａ′線に沿って切断し矢印方向に見
た断面図。FIG. 2 is a cross-sectional view taken along line AA ′ in FIG. 1 and viewed in the direction of the arrow.
【図３】請求項２に対応する電子レンジ用マグネトロン
の陽極構体を示す平面図。FIG. 3 is a plan view showing an anode assembly of a magnetron for a microwave oven according to claim 2.
【図４】図３のＢ−Ｂ′線に沿って切断し矢印方向に見
た断面図。FIG. 4 is a cross-sectional view taken along line BB ′ of FIG. 3 and viewed in the direction of the arrow.
【図５】従来の電子レンジ用マグネトロンの陽極構体を
示す平面図。FIG. 5 is a plan view showing an anode structure of a conventional magnetron for a microwave oven.
【図６】図５のＣ−Ｃ′線に沿って切断し矢印方向に見
た断面図。6 is a cross-sectional view taken along the line CC ′ of FIG. 5 and viewed in the direction of the arrow.
１１，２１…陽極円筒、１２，２２…ベイン、１３，２
３…高い共振周波数の空胴、１４，２４…低い共振周波
数の空胴。11, 21 ... Anode cylinder, 12, 22 ... Vane, 13, 2
3 ... High resonance frequency cavities, 14, 24 ... Low resonance frequency cavities.
Claims (2)
その開口部が上記陽極円筒の軸心に向くように放射状に
配設され、該Ｕ字状ベインの内側で高い共振周波数の空
胴群を構成し、隣り合うＵ字状ベイン相互間で低い共振
周波数の空胴群を構成してなる電子レンジ用マグネトロ
ンにおいて、 上記低い共振周波数の空胴群を構成するベインの外端側
の高さが内端側の高さよりも低く設定されてなることを
特徴とする電子レンジ用マグネトロン。1. A plurality of U-shaped vanes are radially arranged inside the anode cylinder so that their openings are oriented toward the axis of the anode cylinder, and a cavity having a high resonance frequency is formed inside the U-shaped vane. In a magnetron for a microwave oven, which constitutes a barrel group and a cavity group having a low resonance frequency is formed between adjacent U-shaped vanes, an outer end side of a vane constituting the cavity group having a low resonance frequency is provided. A magnetron for a microwave oven, characterized in that the height is set lower than the height on the inner end side.
その開口部が上記陽極円筒の軸心に向くように放射状に
配設され、該Ｕ字状ベインの内側で高い共振周波数の空
胴群を構成し、隣り合うＵ字状ベイン相互間で低い共振
周波数の空胴群を構成してなる電子レンジ用マグネトロ
ンにおいて、 上記ベインの外端側の高さが内端側の高さよりも低く設
定されてなることを特徴とする電子レンジ用マグネトロ
ン。2. A plurality of U-shaped vanes are radially arranged inside the anode cylinder such that their openings are oriented toward the axis of the anode cylinder, and a cavity having a high resonance frequency is formed inside the U-shaped vanes. In a magnetron for a microwave oven, which constitutes a body group and a cavity group having a low resonance frequency between adjacent U-shaped vanes, a height of an outer end side of the vane is higher than a height of the inner end side. A magnetron for a microwave oven characterized by being set low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28743592A JPH06139946A (en) | 1992-10-26 | 1992-10-26 | Magnetron for microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28743592A JPH06139946A (en) | 1992-10-26 | 1992-10-26 | Magnetron for microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06139946A true JPH06139946A (en) | 1994-05-20 |
Family
ID=17717285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28743592A Pending JPH06139946A (en) | 1992-10-26 | 1992-10-26 | Magnetron for microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06139946A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6504304B1 (en) * | 2000-01-18 | 2003-01-07 | Lg Electronics Inc. | Magnetron |
-
1992
- 1992-10-26 JP JP28743592A patent/JPH06139946A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6504304B1 (en) * | 2000-01-18 | 2003-01-07 | Lg Electronics Inc. | Magnetron |
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