JP3164907B2 - Magnetron equipment - Google Patents
Magnetron equipmentInfo
- Publication number
- JP3164907B2 JP3164907B2 JP22824992A JP22824992A JP3164907B2 JP 3164907 B2 JP3164907 B2 JP 3164907B2 JP 22824992 A JP22824992 A JP 22824992A JP 22824992 A JP22824992 A JP 22824992A JP 3164907 B2 JP3164907 B2 JP 3164907B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetron
- case
- shield case
- shield
- cathode
- 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 - Fee Related
Links
Landscapes
- Microwave Tubes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子レンジ等の高周波
加熱機器に用いられるマグネトロン装置に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetron device used for a high-frequency heating device such as a microwave oven.
【０００２】[0002]
【従来の技術】一般に、電子レンジに組み込まれるマグ
ネトロン構体は、図６に示すように構成されている。マ
グネトロン１は、陰極２を同軸的に包囲する陽極筒体３
と、陽極筒体３の一方の開口端に封着された第１の磁極
片４と、セラミックスからなる絶縁環５と、電磁波放出
端子６と、陽極筒体３の他方の開口端に封着された第２
の磁極片７と、陰極端子導出用ステム８とを有してい
る。2. Description of the Related Art Generally, a magnetron assembly incorporated in a microwave oven is configured as shown in FIG. The magnetron 1 includes an anode cylinder 3 coaxially surrounding the cathode 2.
A first pole piece 4 sealed at one opening end of the anode cylinder 3, an insulating ring 5 made of ceramics, an electromagnetic wave emission terminal 6, and a sealing at the other opening end of the anode cylinder 3. The second
, And a cathode terminal leading stem 8.
【０００３】第１の磁極片４の外端面上にはフェライト
製の第１の環状永久磁石９が同軸的に積み重ねられ、こ
の環状永久磁石９の一方の磁極は第１の磁極片４に磁気
的に結合している。また、第２の磁極片７の外端面上に
はフェライト製の第２の環状永久磁石１０が同軸的に積
み重ねられ、この永久磁石１０の一方の磁極は第２の磁
極片７に磁気的に結合している。そして、第１および第
２の環状永久磁石９，１０の各他方の磁極同士が、枠状
継鉄１１によって磁気的に結合されている。A first annular permanent magnet 9 made of ferrite is coaxially stacked on the outer end face of the first pole piece 4, and one magnetic pole of the annular permanent magnet 9 is magnetically attached to the first pole piece 4. Tied together. A second annular permanent magnet 10 made of ferrite is coaxially stacked on the outer end surface of the second pole piece 7, and one magnetic pole of the permanent magnet 10 is magnetically attached to the second pole piece 7. Are combined. The other magnetic poles of the first and second annular permanent magnets 9 and 10 are magnetically coupled by a frame yoke 11.
【０００４】陽極筒体３の外周面には多数の放熱フィン
１２が多段にとりつけられている。また、枠状継鉄１１
の外端面には漏洩電磁波の漏出を防ぐための金属製フィ
ルタケース１３がとりつけられており、このフィルタケ
ース１３内にステム８が没入している。そして、フィル
タケース１３の側壁に貫通型のコンデンサ１４がとりつ
けられており、陰極端子１５に一端を接続したチョーク
コイル１６が、漏洩電磁波阻止用のＬＣフィルタ回路を
構成すべくその他端をコンデンサ１４の貫通電極に接続
している。A large number of radiating fins 12 are mounted on the outer peripheral surface of the anode cylinder 3 in multiple stages. In addition, the frame yoke 11
A metal filter case 13 for preventing leakage of leakage electromagnetic waves is attached to an outer end surface of the filter case 13, and a stem 8 is immersed in the filter case 13. A through-type capacitor 14 is attached to the side wall of the filter case 13, and a choke coil 16 having one end connected to the cathode terminal 15 has the other end connected to the capacitor 14 so as to form an LC filter circuit for preventing leakage electromagnetic waves. Connected to through electrodes.
【０００５】図７に示すように、前述したマグネトロン
構体１７は電子レンジの外装ケース１８内に組み込まれ
る。そして、マグネトロン１の陰極に加熱電圧を印加す
るとともに陰極と陽極との間に高電圧を印加する電源回
路構体１９およびマグネトロン構体１７に、電動ファン
２０からの空冷用気流２１が供給される。また、枠状継
鉄１１に結合された導波管２２は、電磁波放出端子６か
ら放射された電磁波２３を調理室２４内へ導く。As shown in FIG. 7, the above-mentioned magnetron structure 17 is incorporated in an outer case 18 of a microwave oven. Then, the airflow 21 for air cooling from the electric fan 20 is supplied to the power supply circuit structure 19 and the magnetron structure 17 which apply a heating voltage to the cathode of the magnetron 1 and apply a high voltage between the cathode and the anode. Further, the waveguide 22 coupled to the frame-shaped yoke 11 guides the electromagnetic wave 23 radiated from the electromagnetic wave emission terminal 6 into the cooking chamber 24.
【０００６】[0006]
【発明が解決しようとする課題】かかる電子レンジのコ
ンパクト化のためには、外装ケース１８の高さＨの低減
が必要となるが、マグネトロン構体１７のとくにフィル
タケース１３の存在が高さＨの低減を阻む要因となって
いた。また、フィルタケース１３には電磁波漏洩防止の
観点から大きい穴を形成できず、その通気性は非常に低
いので、フィルタケース１３内の陰極端子導出用ステム
８やＬＣフィルタ回路素子を空冷用気流２１で十分に冷
却し難いという課題もあった。なお、ステム８は装置の
動作時に約２００℃〜２５０℃に昇温するので、冷却が
不十分であると割れが発生する。In order to make the microwave oven more compact, it is necessary to reduce the height H of the outer case 18. However, the presence of the magnetron assembly 17 and especially the filter case 13 makes the height H smaller. It was a factor that hindered the reduction. In addition, since a large hole cannot be formed in the filter case 13 from the viewpoint of preventing electromagnetic wave leakage and the air permeability thereof is extremely low, the cathode terminal leading stem 8 and the LC filter circuit element in the filter case 13 are connected to the air flow 21 for air cooling. However, there was also a problem that it was difficult to cool sufficiently. Since the temperature of the stem 8 rises to about 200 ° C. to 250 ° C. during operation of the apparatus, cracks occur if cooling is insufficient.
【０００７】[0007]
【課題を解決するための手段】本発明のマグネトロン装
置は、陰極を同軸的に包囲し、一方の開口端から電磁波
放出端子が、他方の開口端からは陰極端子導出用ステム
が、それぞれ突設されてなる陽極筒体を有するマグネト
ロンと、第１および第２の環状永久磁石と、枠状継鉄
と、前記陽極筒体の外周面に多段にとりつけられた多数
の放熱フィンと、電源回路構体と、空冷用気流を与える
電動ファンとを単一の金属製のシールドケース内に収容
してなり、前記陰極端子導出用ステムが前記シールドケ
ース内の空間に露出しているとともに、前記枠状継鉄の
一部および前記放熱フィンの一部が前記シールドケース
に当接している。また、前記シールドケースが、その上
部の両側壁部に該部から水平に張り出した突耳を有し、
前記シールドケース上に設けられた導波管が前記突耳の
部分で前記シールドケースに固定される構成を有してい
る。 A magnetron device according to the present invention coaxially surrounds a cathode and receives electromagnetic waves from one open end.
The emission terminal is connected to the stem for leading the cathode terminal from the other open end.
, Each having an anode cylinder body protruding
, First and second annular permanent magnets, and a frame yoke
And a large number of multi-stages attached to the outer peripheral surface of the anode cylinder
Heat fins, power supply circuit structure, and air flow for air cooling
The electric fan is housed in a single metal shield case
The stem for leading the cathode terminal is connected to the shield case.
While being exposed to the space inside the
Part of the radiation fin is part of the shield case
Is in contact with In addition, the shield case has a lug horizontally protruding from the upper side wall portions thereof,
A waveguide provided on the shield case is fixed to the shield case at a portion of the lug;
You.
【０００８】[0008]
【作用】このように構成すると、在来のフィルタケース
が不要となるので外装ケースの高さＨを低減でき、しか
も、電動ファンによる空冷効率を高めることができる。With this configuration, a conventional filter case is not required, so that the height H of the outer case can be reduced, and the air-cooling efficiency of the electric fan can be increased.
【０００９】[0009]
【実施例】つぎに本発明を図示した実施例とともに説明
する。図１および図２に示すように、マグネトロン１は
第１および第２の環状永久磁石９，１０、枠状継鉄１１
ならびに放熱フィン１２とともにマグネトロン構体２６
を構成し、通気性のある金属製のシールドケース２５外
に突出している。枠状継鉄１１の一部分および放熱フィ
ン１２の一部分はシールドケース２５に当接しているの
で、マグネトロン構体２６に対する冷却機能は非常に高
い。在来のフィルタケースは存在せず、２７は陰極端子
１５に加熱電圧を印加するとともに陰極・陽極間に高電
圧を印加する電源回路構成体にして、ＬＣフィルタ回路
素子もここに集約されている。そして、電動ファン２０
からの空冷用気流２１はマグネトロン構体２６および電
源回路構体２７等を効率よく空冷し、シールドケース２
５は漏洩電磁波の装置外漏出を防止する役割とともに大
きな面積の空冷ファンとしての役割をも果たす。BRIEF DESCRIPTION OF THE DRAWINGS FIG. As shown in FIGS. 1 and 2, the magnetron 1 includes first and second annular permanent magnets 9 and 10 and a frame-shaped yoke 11.
And the magnetron structure 26 together with the radiation fins 12
And protrudes out of the shield case 25 made of air-permeable metal. Since a part of the frame-shaped yoke 11 and a part of the radiation fin 12 are in contact with the shield case 25, the cooling function for the magnetron structure 26 is very high. There is no conventional filter case, and 27 is a power supply circuit for applying a heating voltage to the cathode terminal 15 and applying a high voltage between the cathode and the anode, and the LC filter circuit elements are also integrated here. . And the electric fan 20
Cooling air flow 21 efficiently cools the magnetron structure 26 and the power supply circuit structure 27 etc.
Reference numeral 5 also functions as a large area air-cooling fan as well as preventing leakage electromagnetic waves from leaking out of the device.
【００１０】かかるマグネトロン装置は図３に示すよう
に、導波管２２および調理室２４とともに外装ケース１
８内に納められるのであるが、非常にコンパクトに構成
できるのみならず、とくにマグネトロン構体２６および
電源回路構体２７に対する空冷効率を格段に高め得る。As shown in FIG. 3, the magnetron device includes an outer case 1 together with a waveguide 22 and a cooking chamber 24.
Although it is housed in the space 8, not only can it be made very compact, but also the air cooling efficiency, especially for the magnetron assembly 26 and the power supply circuit assembly 27, can be significantly increased.
【００１１】図４に示す実施例のものでは、シールドケ
ース２５がパンチングメタルまたは金網で形成された通
気性壁板２５ａを有するとともに、上部の左右両側壁部
に該部から水平に張り出した突耳２８，２９を有してい
る。両突耳２８，２９は断面Ｌ字状の細長い金具を溶着
またはかしめ付けして得たもので、適数個の通孔３０，
３１を有している。In the embodiment shown in FIG. 4, a shield case 25 has a gas permeable wall plate 25a formed of a perforated metal or a wire mesh, and lugs projecting horizontally from the upper left and right side walls. 28 and 29. Each of the lugs 28, 29 is obtained by welding or caulking an elongated metal fitting having an L-shaped cross section.
31.
【００１２】図５に示すように、突耳２８，２９上に導
波管２２の突耳２２ａ，２２ｂを重ね合わせ、通孔３
０，３１およびこれに挿通されたボルトを用いて導波管
２２をシールドケース２５に固定している。As shown in FIG. 5, the lugs 22a and 22b of the waveguide 22 are superimposed on the lugs 28 and 29,
The waveguide 22 is fixed to the shield case 25 using 0, 31 and bolts inserted therethrough.
【００１３】通常、導波管２２は比較的大きい横幅を有
しているが、これに制約を受けることなくシールドケー
ス２５の横幅Ｗを小さくすることができ、装置のコンパ
クト化が可能となる。Normally, the waveguide 22 has a relatively large width. However, the width W of the shield case 25 can be reduced without being limited by this, and the device can be made more compact.
【００１４】[0014]
【発明の効果】以上のように本発明によると、比較的大
きい金属製のシールドケースを必要とするものの、在来
のフィルタケースを必要としないのみならず、当該マグ
ネトロン装置が組み込まれる電子レンジ全体を非常にコ
ンパクトに構成でき、しかも、マグネトロンのステムは
空冷気流に直接触れ、マグネトロン構体や電源回路構体
に対する空冷効率が高められるので、冷却フィンの大き
さ・枚数を減じたり、電動ファンの小型化を図り得るな
どの利点がある。According to the present invention as described above, according to the present invention, although requiring a relatively large metal shield case, not only does not require a conventional filter case, the mug
The entire microwave oven in which the netron device is incorporated can be made very compact, and the magnetron stem directly touches the air-cooled airflow, increasing the air-cooling efficiency of the magnetron assembly and the power supply circuit assembly. There are advantages such as reduction in size and downsizing of the electric fan.
【図１】本発明を実施したマグネトロン装置の側断面図FIG. 1 is a side sectional view of a magnetron device embodying the present invention.
【図２】同マグネトロン装置の外観斜視図FIG. 2 is an external perspective view of the magnetron device.
【図３】同マグネトロン装置を組み込んだ電子レンジの
側断面図FIG. 3 is a side sectional view of a microwave oven incorporating the magnetron device.
【図４】本発明のマグネトロン装置の他の実施例の外観
斜視図FIG. 4 is an external perspective view of another embodiment of the magnetron device of the present invention.
【図５】同実施例のマグネトロン装置に導波管を固定し
た状態の背面図FIG. 5 is a rear view showing a state where the waveguide is fixed to the magnetron device of the embodiment.
【図６】従来のマグネトロン装置の一部破断側面図FIG. 6 is a partially cutaway side view of a conventional magnetron device.
【図７】従来の電子レンジの側面図FIG. 7 is a side view of a conventional microwave oven.
１ マグネトロン ６ 電磁波放出端子 ９，１０ 環状永久磁石 １１ 枠状継鉄 １２ 放熱フィン ２０ 電動ファン ２５ シールドケース ２６ マグネトロン構体 ２７ 電源回路構体 ２８，２９ 突耳 DESCRIPTION OF SYMBOLS 1 Magnetron 6 Electromagnetic wave emission terminal 9, 10 Annular permanent magnet 11 Frame yoke 12 Radiation fin 20 Electric fan 25 Shield case 26 Magnetron structure 27 Power supply circuit structure 28, 29
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01J 23/12 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) H01J 23/12
Claims (2)
ら電磁波放出端子が、他方の開口端からは陰極端子導出
用ステムが、それぞれ突設されてなる陽極筒体を有する
マグネトロンと、第１および第２の環状永久磁石と、枠
状継鉄と、前記陽極筒体の外周面に多段にとりつけられ
た多数の放熱フィンと、電源回路構体と、空冷用気流を
与える電動ファンとを単一の金属製のシールドケース内
に収容してなり、前記陰極端子導出用ステムが前記シー
ルドケース内の空間に露出しているとともに、前記枠状
継鉄の一部および前記放熱フィンの一部が前記シールド
ケースに当接していることを特徴とするマグネトロン装
置。1. A cathode coaxially surrounds one of said open ends.
From the other end, the cathode terminal is led out from the other open end
Stems each have an anode cylinder that is protruded
A magnetron, first and second annular permanent magnets, and a frame
And a multi-stage attached to the outer peripheral surface of the anode cylinder
A large number of radiating fins, a power circuit structure, and airflow for air cooling.
Give the electric fan and the inside of a single metal shield case
The cathode terminal leading stem is housed in the seat.
Exposed in the space inside the case, and
Part of the yoke and part of the radiation fin are shielded
A magnetron device which is in contact with a case .
壁部に該部から水平に張り出した突耳を有し、前記シー
ルドケース上に設けられた導波管が前記突耳の部分で前
記シールドケースに固定されることを特徴とする請求項
１記載のマグネトロン装置。2. The shield case has protruding lugs horizontally protruding therefrom on both side walls at an upper part thereof, and a waveguide provided on the shield case is provided with a shield at the protruding lugs. The magnetron device according to claim 1, wherein the magnetron device is fixed to a case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22824992A JP3164907B2 (en) | 1992-02-27 | 1992-08-27 | Magnetron equipment |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4091292 | 1992-02-27 | ||
| JP4-40912 | 1992-02-27 | ||
| JP22824992A JP3164907B2 (en) | 1992-02-27 | 1992-08-27 | Magnetron equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05303939A JPH05303939A (en) | 1993-11-16 |
| JP3164907B2 true JP3164907B2 (en) | 2001-05-14 |
Family
ID=26380428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22824992A Expired - Fee Related JP3164907B2 (en) | 1992-02-27 | 1992-08-27 | Magnetron equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3164907B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000156171A (en) | 1998-11-18 | 2000-06-06 | Matsushita Electronics Industry Corp | Magnetron apparatus and manufacture thereof |
| CN113613416B (en) * | 2021-07-29 | 2023-07-21 | 浩泰智能(成都)科技有限公司 | Anti-interference microwave amplifier |
-
1992
- 1992-08-27 JP JP22824992A patent/JP3164907B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05303939A (en) | 1993-11-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |