KR950000309Y1 - High-friquency leakage interference device for magnetron - Google Patents
High-friquency leakage interference device for magnetron Download PDFInfo
- Publication number
- KR950000309Y1 KR950000309Y1 KR2019890005474U KR890005474U KR950000309Y1 KR 950000309 Y1 KR950000309 Y1 KR 950000309Y1 KR 2019890005474 U KR2019890005474 U KR 2019890005474U KR 890005474 U KR890005474 U KR 890005474U KR 950000309 Y1 KR950000309 Y1 KR 950000309Y1
- Authority
- KR
- South Korea
- Prior art keywords
- high frequency
- magnetron
- ceramic
- microwave oven
- friquency
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/14—Leading-in arrangements; Seals therefor
- H01J23/15—Means for preventing wave energy leakage structurally associated with tube leading-in arrangements, e.g. filters, chokes, attenuating devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2225/00—Transit-time tubes, e.g. Klystrons, travelling-wave tubes, magnetrons
- H01J2225/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
Landscapes
- Microwave Tubes (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안 장치의 단면도.1 is a cross-sectional view of the device.
제2도는 종래 마그네트론의 단면도.2 is a cross-sectional view of a conventional magnetron.
본 고안은 전자레인지용 마그네트론의 고주파 누설 방지장치에 관한 것으로서 특히, 미그네트론 하단부의 필라멘트 차폐실(F실)을 막고 있는 F세라믹 상단에 고주파 흡수용 페라이트 혹은 카본을 도포한 고주파 흡수용 도포층을 형성하여 고주파의 누설을 방지할 수 있도록 한 전자레인지용 마그네트론의 고주파 누설 방지장치에 관한 것이다.The present invention relates to a high frequency leakage preventing device of a magnetron for a microwave oven, and in particular, a high frequency absorption coating layer coated with a high frequency absorption ferrite or carbon on the top of the F ceramic blocking the filament shielding chamber (F chamber) at the lower end of the magnetron. The present invention relates to a high frequency leakage preventing device of a magnetron for a microwave oven which is formed to prevent leakage of high frequency.
종래의 마그네트론은 제2도에 도시된 바와같이 캡안테나(31), 안테나(32), A세라믹(33), 마그네트(34), 애노드(35), 베인(36), 필라멘트(37), F실(38), F세라믹(39), 사이드리드(40), 중심리드(41), 차폐카버(42) 및 덮개(43)로 구성되어 있어, 캐소드 역할을 하는 필라멘트(37)을 가열하게 되면 열전자가 방출되는데 이 열전자는 전계와 자계에 의해 베인(35)쪽으로 회전하면서 끌려가게 된다.Conventional magnetrons include a cap antenna 31, an antenna 32, an A ceramic 33, a magnet 34, an anode 35, a vane 36, a filament 37, and a F as shown in FIG. It is composed of the seal 38, the F ceramic 39, the side lead 40, the center lead 41, the shielding cover 42 and the lid 43, when the filament 37, which acts as a cathode, is heated Hot electrons are emitted, which are attracted as they are rotated toward the vanes 35 by electric and magnetic fields.
이때 베인(36)선단부는 LC병렬 공진회로의 끝단부로서 정극성(+) 또는 부극성(-)전하가 유도되는데 이에 따라 회전하는 전자는 바퀴살처럼 집군하게 되고, 이 바퀴살의 회전 각 주파수의 베인(6)의 공진주파수가 공진하게 되면 발진은 안정되게 지속된다.At this time, the tip of the vane 36 is the end of the LC parallel resonant circuit, and the positive (+) or the negative (-) charge is induced. Accordingly, the rotating electrons are concentrated like the spokes. When the resonant frequency of (6) resonates, the oscillation is stable.
현재 널리 쓰이고 있는 가정용 전자레인지의 마그네트론 경우에는 이 발진주파수는 약 2455MHz의 고주파로서 공진기의 구조상 이 기본파외에 그 정수배의 주파수(소위 고조파 성분)들도 동시에 발생하게 된다.In the case of the magnetron of the home microwave oven which is widely used at present, the oscillation frequency is about 2455 MHz, and in addition to the fundamental wave, the frequency of the integer multiple of the fundamental wave (the so-called harmonic component) is generated simultaneously.
따라서 이 고조파 성분들은 파장이 짧아지는 만큼 전자레인지에서의 전자파 차폐가 곤란해져 외부로 누설되기 쉽고, 이 누설전파는 아주 미약하지만 무선통신등에 장애가 되어 누설의 한도값이 법으로 규제되어 있을뿐만 아니라 최근 TV등의 위성방송이 성행함에 따라 그 전파의 방해 요소를 극소화시키는 것이 요망되고 있다.Therefore, these harmonic components are difficult to shield electromagnetic waves in the microwave oven as the wavelength is shortened, and they are easy to leak to the outside. This leakage propagation is very weak, but it is an obstacle to wireless communication. As satellite broadcasting such as TV is prevalent, it is desired to minimize the disturbance factor of the radio wave.
또한 공진기(즉, 애노드(35)부위)에서 발생된 고주파들은 애노드(35) 상단부인 출력부쪽을 통해 전자레인지의 가열용 캐비티로 운반되는데 이때 애노드(35) 하단부쪽으로도 고주파가 누설된다. 즉, F실(38)과 필라멘트(37)와 회로를 이루며 지지해주고 있는 중심리드(41)와 사이드리드(40) 사이에는 고압이 걸려있기 때문에 그 절연효과가 나쁘게 되고, 또한 애노드(35) 부위의 진공밀봉을 위하여 F실(38) 하단부에 F세라믹(39)을 부착시키게 놓았는데 이 세라믹은 고주파들을 차폐시키지 못하므로 고주파는 그대로 F세라믹(39)을 통해 유출되기 때문이다.In addition, the high frequency generated in the resonator (that is, the portion of the anode 35) is conveyed to the heating cavity of the microwave oven through the output portion of the upper end of the anode 35, at which time the high frequency leaks toward the lower end of the anode 35. That is, since the high pressure is applied between the center lead 41 and the side lead 40, which are supported by forming the F chamber 38 and the filament 37 in a circuit, the insulation effect becomes worse, and the anode 35 portion The F ceramic 38 is placed on the lower end of the F chamber 38 for the vacuum sealing of the ceramic because the ceramic does not shield the high frequencies, so the high frequency flows through the F ceramic 39 as it is.
이를 방지하기 위해 현재는 F세라믹(39) 주위에 금속성 필터인 차폐커버 (42)와 덮개(43)를 일체로 하여 차폐시키고 있으나 차폐커버(42)와 덮개(43)를 체결할 때 틈새가 없이 완벽하게 밀봉하기 힘들어 외부로 짧은 파장의 고주파가 새어나오게 되는 단점이 있다.To prevent this, at present, the shielding cover 42 and the cover 43, which are metallic filters, are integrally shielded around the F ceramic 39, but there is no gap when the shielding cover 42 and the cover 43 are fastened. It is difficult to seal completely, so there is a shortcoming that high frequency of short wavelength leaks out.
본 고안은 이와같은 종래의 단점을 해결하기 위해 F실의 하단을 막게되는 F세라믹의 상단에 고주파 흡수용 페라이트 혹은 카본등을 도포하여 마그네트론의 하단부로 누설되는 고주파의 차폐효과를 극대화시킬 수 있도록 F세리믹의 구조를 개선한 전자레인지용 마그네트론의 고주파 누설 방지장치를 제공하는 것을 목적으로 하며, 이하 첨부된 도면을 참조하여 본 고안 장치의 구성 및 작용효과를 상세히 설명하면 다음과 같다.The present invention is to solve the above-mentioned drawbacks of the F to cover the bottom of the F chamber by applying a high frequency absorbing ferrite or carbon on the top of the F to maximize the shielding effect of the high frequency leakage to the bottom of the magnetron F An object of the present invention is to provide a high frequency leakage preventing device of a magnetron for improving the structure of the ceramic, and the configuration and operation effects of the device of the present invention will be described in detail with reference to the accompanying drawings.
제1도에 의하면 본 고안 장치는 캡안테나(1), 안테나(2), A세라믹(3), 마그네트(4), 애노드(5), 베인(6), 필라멘트(7), F실(8), F세라믹(9), 사이드리드(10), 중심리드(11), 차폐커버(12) 및 덮개(13)로 구성된 마그네트론에 있어서, 사이드리드(10)와 중심리드(11)가 각각 구멍(14,15)에 끼워져 F실(8)을 밀봉하는 F세라믹 (9)의 상단에 고주파 흡수용 페라이트 또는 카본을 도포한 고주파 흡수용 도포층 (16)을 형성한 것이다.According to FIG. 1, the device of the present invention includes a cap antenna 1, an antenna 2, an A ceramic 3, a magnet 4, an anode 5, a vane 6, a filament 7, and an F chamber 8 ), F ceramic (9), side lead (10), center lead (11), shield cover (12) and cover (13) in the magnetron, the side lead (10) and the center lead (11), respectively The high frequency absorption coating layer 16 having the high frequency absorption ferrite or carbon coated on the upper end of the F ceramic 9, which is inserted into the 14 and 15 to seal the F chamber 8, is formed.
이와같은 구성으로 된 본 고안 장치의 작용효과는 먼저, 공진기(즉, 애노드 (5)부위)에서 발생된 고주파중 애노드(5)의 하단부쪽으로 향하는 고주파들은 F세라믹(9) 상단에 페라이트 또는 카본이 도포되어진 고주파 흡수용 도포층(16)에 의해 일차적으로 흡수됨에 따라 일부가 차폐되고, 또한 일부 차폐되지 않은 고주파는 F실(8)과 F세라믹(9) 부위를 둘러싸고 있는 금속성 필터인 차폐커버(12)와 덮개(13)에 의해 완전히 차폐된다.The effect of the device of the present invention having such a configuration is that first, among the high frequencies generated in the resonator (i.e., the anode 5 part) toward the lower end of the anode 5, ferrite or carbon is formed on the top of the F ceramic 9. A part of the shielding is primarily shielded by the applied high frequency absorption coating layer 16, and a part of the unshielded high frequency shield is a metallic filter that surrounds the F chamber 8 and the F ceramic 9 region. 12) and the cover 13 is completely shielded.
이상에서 설명한 바와같이 본 고안 장치에 의하면 마그네트론의 애노드 부위에서 누설되는 고주파를 F세라믹의 상단에 도포한 고주파 흡수용 페라이트 또는 카본에 의해 일차적으로 차폐하고 2차적으로 공지의 차폐커버와 뚜껑체에 의해 차폐시킴으로서 고주파의 누설을 완전히 방지할 수 있게 된다.As described above, according to the device of the present invention, the high frequency leaking from the anode portion of the magnetron is primarily shielded by a high frequency absorption ferrite or carbon coated on the top of the F ceramic, and secondly by a known shield cover and a lid body. By shielding, high frequency leakage can be completely prevented.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890005474U KR950000309Y1 (en) | 1989-04-29 | 1989-04-29 | High-friquency leakage interference device for magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890005474U KR950000309Y1 (en) | 1989-04-29 | 1989-04-29 | High-friquency leakage interference device for magnetron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR900019343U KR900019343U (en) | 1990-11-09 |
| KR950000309Y1 true KR950000309Y1 (en) | 1995-01-16 |
Family
ID=19285618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019890005474U KR950000309Y1 (en) | 1989-04-29 | 1989-04-29 | High-friquency leakage interference device for magnetron |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR950000309Y1 (en) |
-
1989
- 1989-04-29 KR KR2019890005474U patent/KR950000309Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR900019343U (en) | 1990-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5021713A (en) | Magnetron | |
| KR910004087B1 (en) | Magnetron | |
| KR950000309Y1 (en) | High-friquency leakage interference device for magnetron | |
| US4689460A (en) | Absorber device for microwave leakage | |
| US4006382A (en) | Magnetron filter | |
| US5406167A (en) | Apparatus for shielding unnecessary electromagnetic waves in a magnetron for a microwave oven | |
| KR950002860Y1 (en) | Leakage prevention device for magnetron | |
| KR930005051Y1 (en) | Magnetron | |
| KR830000136Y1 (en) | Magnetron Leakage Propagation Device | |
| KR940002924Y1 (en) | High frequency leaking protect device for magnetron of electronic range | |
| KR100251566B1 (en) | Magnetron | |
| KR900010289Y1 (en) | Magnetron using capacator | |
| KR920001567Y1 (en) | Anti leaking apparatus of needless wave | |
| KR200145044Y1 (en) | Harmonic Leakage Prevention Terminal for Magnetron | |
| JPH04229985A (en) | Magnetron having high frequency leakage shield type capacitor unit | |
| KR930007974Y1 (en) | Magnetron for electronic range | |
| JPS6145537A (en) | Magnetron | |
| KR0136193Y1 (en) | High frequency generator devices | |
| KR0175838B1 (en) | Harmonic oscillation frequency generation device | |
| JPS60243939A (en) | Filter circuit element for noize elimination of magnetron | |
| KR100237693B1 (en) | Magnetron | |
| KR100286832B1 (en) | chalk vane structure of magnetron | |
| KR100266604B1 (en) | Structure for preventing harmonic wave leakage in magnetron | |
| JP3001097U (en) | High frequency oscillator | |
| KR920001568Y1 (en) | Magnetron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| N231 | Notification of change of applicant | ||
| REGI | Registration of establishment | ||
| FPAY | Annual fee payment |
Payment date: 20031230 Year of fee payment: 10 |
|
| EXPY | Expiration of term |