JP3278464B2 - Magnetron for microwave oven - Google Patents
Magnetron for microwave ovenInfo
- Publication number
- JP3278464B2 JP3278464B2 JP23719092A JP23719092A JP3278464B2 JP 3278464 B2 JP3278464 B2 JP 3278464B2 JP 23719092 A JP23719092 A JP 23719092A JP 23719092 A JP23719092 A JP 23719092A JP 3278464 B2 JP3278464 B2 JP 3278464B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetron
- microwave oven
- harmonics
- height
- vane
- 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
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Description
【０００１】[0001]
【産業上の利用分野】この発明は電子レンジ用マグネト
ロンに係わり、特にその陽極構体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetron for a microwave oven, and more particularly to an anode structure for the magnetron.
【０００２】[0002]
【従来の技術】一般に電子レンジ用マグネトロンの陽極
構体は、陽極円筒の内側に複数のベインが放射状に配設
され、各ベインが大小２種のストラップリングにより１
つおきに電気的に短絡されて、共振器を構成している。2. Description of the Related Art In general, an anode structure of a magnetron for a microwave oven has a plurality of vanes radially arranged inside an anode cylinder, and each vane is formed by two types of strap rings of large and small.
Every other is electrically short-circuited to form a resonator.
【０００３】このような電子レンジ用マグネトロンは電
子レンジに組み込まれるが、動作時には本来の2450ＭＨ
ｚ帯の基本波のみならず、第２，第３，……と高調波も
同時に発生する。昨今は、この漏洩量に対する規制が段
々と厳しくなり、特に第５高調波（12.25 ＧＨｚ) 帯の
規制は大変厳しい。電子レンジ用マグネトロンの設計者
は、この高調波抑制のために、出力部に各波長の１／４
のチョ−ク群を設けている。[0003] Such a magnetron for a microwave oven is incorporated in a microwave oven.
Not only the fundamental wave in the z band, but also the second, third,... and higher harmonics are generated at the same time. In recent years, regulations on the amount of leakage have become increasingly strict, and in particular, regulations on the fifth harmonic (12.25 GHz) band are very strict. The designer of the magnetron for a microwave oven has to output 1/4 of each wavelength to the output section to suppress the harmonics.
Are provided.
【０００４】[0004]
【発明が解決しようとする課題】しかるに、抑制する高
調波数が増えてくると、チョ−ク群が限られた出力部内
空間に納まらず、又、非常に複雑な配置が必要となり、
肝心の基本波への影響も出て、信頼性を落とす原因とな
っていた。第２，第３高調波のように１／４波長が比較
的大きいものは、チョ−ク構成も容易であるが、高次に
なると精密な寸法管理を要するようになってくる。However, if the number of harmonics to be suppressed increases, the choke group cannot be accommodated in the limited space in the output section, and a very complicated arrangement is required.
It also had an important effect on the fundamental wave, causing a drop in reliability. Those having a relatively large quarter wavelength, such as the second and third harmonics, can be easily choked, but the higher the order, the more precise dimensional control is required.
【０００５】この発明は、以上のような不都合を解消し
たもので、共振器から発生する第４，第５高調波を抑制
し、出力部の構成を簡単にして且つ管理し易すくした電
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 solves the above-mentioned disadvantages, and suppresses the fourth and fifth harmonics generated from the resonator, thereby simplifying the configuration of the output section and facilitating management. It is intended to provide a magnetron for use.
【０００６】[0006]
【課題を解決するための手段】この発明は、陽極円筒の
内側に複数のベインが放射状に配設され、このベインが
大小２種のストラップリングにより１つおきに電気的に
短絡されてなり、且つ陽極円筒の内径をＤ、ベインの高
さをＨ、大小２種のストラップリングの中間径をｄ、大
小２種のストラップリングの高さをｔとすれば、 ｄ／Ｄ＝-1.059（ｔ／Ｈ）＋（61±1) （％） に設定されてなる発振周波数が2450ＭＨｚ帯の電子レン
ジ用マグネトロンである。According to the present invention, a plurality of vanes are radially arranged inside an anode cylinder, and the vanes are electrically short-circuited every other by two types of large and small strap rings. If the inner diameter of the anode cylinder is D, the height of the vane is H, the intermediate diameter of the two large and small strap rings is d, and the height of the two large and small strap rings is t, then d / D = -1.059 (t / H) + (61 ± 1) (%) This is a magnetron for a microwave oven having an oscillation frequency of 2450 MHz band.
【０００７】[0007]
【作用】この発明によれば、第４，第５高調波という高
次数の高調波の抑制が共振器で出来るため、出力部の設
計は第２，第３高調波用チョ−クに主眼を置けば良い。
従って、第４，第５高調波については比較的ル−ズに設
計出来、簡単で管理のし易い出力部構造を得ることが出
来る。According to the present invention, since higher-order harmonics such as the fourth and fifth harmonics can be suppressed by the resonator, the design of the output section focuses on the chokes for the second and third harmonics. Just put it.
Therefore, the fourth and fifth harmonics can be designed relatively loosely, and an output section structure which is simple and easy to manage can be obtained.
【０００８】[0008]
【実施例】以下、図面を参照して、この発明の一実施例
を詳細に説明する。An embodiment of the present invention will be described below in detail with reference to the drawings.
【０００９】この発明による電子レンジ用マグネトロン
は発振周波数が2450ＭＨｚ帯であり、図１および図２に
示すように構成され、陽極円筒１の内側に複数のベイン
２が放射状に配設され、各ベイン２が大小２種のストラ
ップリング４，５により１つおきに電気的に短絡され
て、共振器を構成している。そして、各ベイン２の遊端
で囲まれた作用空間Ｓには、管軸に沿って陰極３が配設
されている。A magnetron for a microwave oven according to the present invention has an oscillating frequency of 2450 MHz band and is configured as shown in FIGS. 1 and 2. A plurality of vanes 2 are radially arranged inside an anode cylinder 1, and each 2 is electrically short-circuited every other by two types of strap rings 4 and 5 to constitute a resonator. In the working space S surrounded by the free ends of the vanes 2, the cathode 3 is provided along the tube axis.
【００１０】この場合、陽極円筒１の内径をＤ、ベイン
２の高さをＨ、大小２種のストラップリング４，５の中
間径をｄ、大小２種のストラップリング４，５の高さを
ｔとすれば、 ｄ／Ｄ＝-1.059（ｔ／Ｈ）＋（61±1) （％） に設定されており、この発明の特徴となっている。In this case, the inner diameter of the anode cylinder 1 is D, the height of the vane 2 is H, the intermediate diameter of the two large and small strap rings 4 and 5 is d, and the height of the two large and small strap rings 4 and 5 is Assuming that t, d / D = -1.059 (t / H) + (61 ± 1) (%), which is a feature of the present invention.
【００１１】即ち、この実施例では、陽極円筒１の内径
が35.5ｍｍ，ベイン２の高さが9.5ｍｍ，ベイン２の内
径端が9.05ｍｍ，陰極３の外径が3.9 ｍｍに設定され、
図３からも明らかなように、ストラップリング４，５の
高さが0.75ｍｍ，1.00ｍｍ，1.30ｍｍ，1.50ｍｍの場合
について計算すると、ｔ／Ｈ7.9 ％，10.5％，13.7％，
15.8％となる。そして、ストラップリング４，５の中間
径が18.70 ｍｍ，17.56 ｍｍ，16.70 ｍｍ，15.73 ｍｍ
の場合について計算すると、ｄ／Ｄがそれぞれ52.7％，
49.5％，47.0％，44.3％となる。これらの場合、第４，
第５高調波共に良好な結果を得た。この効果は、同一
（ｔ／Ｈ）において、（ｄ／Ｄ）が±１％の範囲であれ
ば有効であることも判った。That is, in this embodiment, the inner diameter of the anode cylinder 1 is set to 35.5 mm, the height of the vane 2 is set to 9.5 mm, the inner diameter end of the vane 2 is set to 9.05 mm, and the outer diameter of the cathode 3 is set to 3.9 mm.
As apparent from FIG. 3, when the heights of the strap rings 4 and 5 are 0.75 mm, 1.00 mm, 1.30 mm and 1.50 mm, t / H 7.9%, 10.5%, 13.7%,
15.8%. And the intermediate diameter of the strap rings 4 and 5 is 18.70 mm, 17.56 mm, 16.70 mm, 15.73 mm
Calculating for the case, d / D is 52.7%,
49.5%, 47.0% and 44.3%. In these cases, the fourth
Good results were obtained for the fifth harmonic. This effect was also found to be effective if (d / D) was in the range of ± 1% at the same (t / H).
【００１２】尚、この発明は、ベイン２の高さが8.0 〜
11.0ｍｍの範囲、ベイン２の内径端が8.55〜9.48ｍｍの
範囲、陰極３の外径が3.62〜4.02ｍｍの範囲のもに好適
である。In the present invention, the height of the vane 2 is 8.0 to 8.0.
It is also suitable for the range of 11.0 mm, the inner diameter end of the vane 2 in the range of 8.55 to 9.48 mm, and the outer diameter of the cathode 3 in the range of 3.62 to 4.02 mm.
【００１３】[0013]
【発明の効果】以上説明したようにこの発明によれば、
陽極円筒の内径をＤ、上記ベインの高さをＨ、上記大小
２種のストラップリングの中間径をｄ、上記大小２種の
ストラップリングの高さをｔとすれば、 ｄ／Ｄ＝-1.059（ｔ／Ｈ）＋（61±1) （％）As described above, according to the present invention,
If the inner diameter of the anode cylinder is D, the height of the vane is H, the intermediate diameter of the two large and small strap rings is d, and the height of the two large and small strap rings is t, then d / D = -1.059. (T / H) + (61 ± 1) (%)
【００１４】に設定されているので、第４，第５高調波
という高次数の高調波の抑制が共振器で出来るため、出
力部の設計は第２，第３高調波用チョ−クに主眼を置け
ば良い。従って、第４，第５高調波については比較的ル
−ズに設計出来、簡単で管理のし易い出力部構造を得る
ことが出来る。Since the higher harmonics of the fourth and fifth harmonics can be suppressed by the resonator, the design of the output section is mainly focused on the chokes for the second and third harmonics. Should be placed. Therefore, the fourth and fifth harmonics can be designed relatively loosely, and an output section structure which is simple and easy to manage can be obtained.
【図１】この発明の一実施例に係る電子レンジ用マグネ
トロンの陽極構体を示す断面図。FIG. 1 is a cross-sectional view showing an anode structure of a magnetron for a microwave oven according to one embodiment of the present invention.
【図２】図１の平面図。FIG. 2 is a plan view of FIG. 1;
【図３】図１のマグネトロンにおける各部材の寸法関係
を示す特性曲線図。FIG. 3 is a characteristic curve diagram showing a dimensional relationship of each member in the magnetron of FIG.
１…陽極円筒、２…ベイン、３…陰極、４，５…ストラ
ップリング。1 ... Anode cylinder, 2 ... Vane, 3 ... Cathode, 4,5 ... Strap ring.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野村 良久 北海道旭川市南５条通23丁目1975番地 ホクト電子工業株式会社内 (56)参考文献 特開 平１−274341（ＪＰ，Ａ) 特開 昭63−110527（ＪＰ，Ａ) 特開 昭61−281435（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01J 23/20 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Yoshihisa Nomura 23-1975, Minami 5-jo-dori, Asahikawa-shi, Hokkaido Inside Hokuto Electronics Industry Co., Ltd. (56) References JP-A-1-274341 (JP, A) JP-A Sho 63-110527 (JP, A) JP-A-61-281435 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01J 23/20
Claims (1)
に配設され、該ベインが大小２種のストラップリングに
より１つおきに電気的に短絡されてなる発振周波数が24
50ＭＨｚ帯の電子レンジ用マグネトロンにおいて、 上記陽極円筒の内径をＤ、上記ベインの高さをＨ、上記
大小２種のストラップリングの中間径をｄ、上記大小２
種のストラップリングの高さをｔとすれば、 ｄ／Ｄ＝-1.059（ｔ／Ｈ）＋（61±1) （％） に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 vanes are radially arranged inside an anode cylinder, and the oscillating frequency is such that the vanes are electrically short-circuited every other by two types of large and small strap rings.
In a magnetron for a microwave oven in a 50 MHz band, the inner diameter of the anode cylinder is D, the height of the vane is H, the intermediate diameter of the two large and small strap rings is d, and the large and small
A magnetron for a microwave oven, wherein d / D = -1.059 (t / H) + (61 ± 1) (%), where t is the height of the kind of strap ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23719092A JP3278464B2 (en) | 1992-09-04 | 1992-09-04 | Magnetron for microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23719092A JP3278464B2 (en) | 1992-09-04 | 1992-09-04 | Magnetron for microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0689669A JPH0689669A (en) | 1994-03-29 |
| JP3278464B2 true JP3278464B2 (en) | 2002-04-30 |
Family
ID=17011710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23719092A Expired - Lifetime JP3278464B2 (en) | 1992-09-04 | 1992-09-04 | Magnetron for microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3278464B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000077004A (en) * | 1998-08-28 | 2000-03-14 | Sanyo Electric Co Ltd | Magnetron |
| KR20040011638A (en) * | 2002-07-27 | 2004-02-11 | 삼성전자주식회사 | Mgnetron |
| JP4503639B2 (en) * | 2007-09-11 | 2010-07-14 | 東芝ホクト電子株式会社 | Magnetron for microwave oven |
-
1992
- 1992-09-04 JP JP23719092A patent/JP3278464B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0689669A (en) | 1994-03-29 |
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