KR200155128Y1 - A shield structure of non-harmonic oscillation frequency of chock coil for magnetron - Google Patents

A shield structure of non-harmonic oscillation frequency of chock coil for magnetron Download PDF

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Publication number
KR200155128Y1
KR200155128Y1 KR2019960023144U KR19960023144U KR200155128Y1 KR 200155128 Y1 KR200155128 Y1 KR 200155128Y1 KR 2019960023144 U KR2019960023144 U KR 2019960023144U KR 19960023144 U KR19960023144 U KR 19960023144U KR 200155128 Y1 KR200155128 Y1 KR 200155128Y1
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lead
magnetron
harmonics
harmonic
present
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KR2019960023144U
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Korean (ko)
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KR980009634U (en
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조기준
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전주범
대우전자주식회사
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/14Leading-in arrangements; Seals therefor
    • H01J23/15Means for preventing wave energy leakage structurally associated with tube leading-in arrangements, e.g. filters, chokes, attenuating devices

Abstract

본 고안은 센타리드 및 사이드리드에 연결된 쵸크코일을 소정형상의 차폐구조로 제작함으로서 외부로 전도되고 고조파가 차폐되도록 한 마그네트론용 쵸크코일의 고조파 차폐구조에 관한 것이다.The present invention relates to a harmonic shielding structure of a choke coil for a magnetron, which is conducted to the outside and shields harmonics by manufacturing the choke coils connected to the center lead and the side lead in a predetermined shape.

본 고안은 특히, 필라멘트(1)의 양단에 연결된 센타리드(4) 및 사이드리드(5)의 종단에 쵸크코일(6,7)을 연결하되 상기 센타리드(4) 및 사이드리드(5)에 인접한 쵸크코일(6,7)의 일단으로 고조파를 직접 상쇄시키도록 내측으로 소정길이로 만곡된 첨단부(61,71)가 형성된 것을 그 특징으로 한 것으로서, 간단한 구조개선으로 차폐효과를 극대화할 수 있는 이점이 있다.In particular, the present invention connects the choke coils 6 and 7 to the ends of the center lead 4 and the side lead 5 connected to both ends of the filament 1, but the center lead 4 and the side lead 5 are connected to the center lead 4 and the side lead 5. It is characterized by the fact that the tip portions 61 and 71 are bent in a predetermined length inward to directly cancel the harmonics to one end of the adjacent choke coils 6 and 7, and the shielding effect can be maximized by simple structure improvement. There is an advantage to that.

Description

마그네트론용 쵸크코일의 고조파 차폐구조Harmonic Shield Structure of Choke Coil for Magnetron

제1도의 (a), (b)는 종래의 마그네트론 구성도,(A), (b) of FIG. 1 is a conventional magnetron configuration diagram,

제2도는 본 고안 마그네트론용 쵸크코일의 고조파 차폐구조를 설명하기 위한 구성도.2 is a configuration diagram for explaining the harmonic shielding structure of the choke coil for the inventive magnetron.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

4 : 센타리드 5 : 사이드리드4: center lead 5: side lead

6,7 : 쵸크코일 8 : 콘덴서6,7 choke coil 8: condenser

9,10 : 입력단자 61,71 : 첨단부9,10: Input terminal 61,71: Advanced part

본 고안은 전자레인지용 마그네트론의 고조파 차폐기술에 관한 것으로서, 보다 상세하게는 센타리드 및 사이드리드에 연결된 쵸크코일을 소정형상의 차폐구조로 제작함으로서 외부로 전도되는 고조파가 차폐되도록 한 마그네트론용 쵸크코일의 고조파 차폐구조에 관한 것이다.The present invention relates to a harmonic shielding technology of a magnetron for a microwave oven, and more particularly, to a choke coil for a magnetron, in which a choke coil connected to a center lead and a side lead is manufactured in a shield of a predetermined shape, so that harmonics conducted to the outside are shielded. The harmonic shielding structure of the present invention.

현재의 가정용 전자레인지 마그네트론의 경우 발진주파수가 2,450MHZ인 기본파를 사용하고 있는데, 공진기 구조상 기본파외에 그 정수배의 주파수, 소위 고조파성분(제5고조파)들도 동시에 발생된다. 이 고조파성분들은 파장이 짧아지는 만큼 전자레인지에서의 전자파 차폐가 곤란해져 외부로 누설되기 쉬워지며, 이 누설전파는 그 누설전력이 미약하더라도 무선장애를 일으킬수가 있어 그 누설전력의 한도값을 법으로 규제하고 있을뿐만 아니라, 최근 TV 등의 위성방송이 성행하는 추세에 따라 위성방송을 수신하는데 방해를 막기위하여 그 전파방해요소인 고조파 성분을 극소화시키는 것이 요망시되고 있다.The current home microwave magnetron uses a fundamental wave with an oscillation frequency of 2,450 MHZ. In addition to the fundamental wave in the resonator structure, the frequency of the integral multiple, the so-called harmonic components (5th harmonic), are generated simultaneously. These harmonic components have a shorter wavelength, which makes it difficult to shield electromagnetic waves in a microwave oven, and they are more likely to leak to the outside. In addition to the regulations, in order to prevent interference with receiving satellite broadcasts in accordance with the recent trend of satellite broadcasting such as TV, it is desired to minimize the harmonic components that are radio wave interference factors.

이러한 고조파성분을 극소화하기 위하여 종래에는 제1도의 (a), (b)에 도시된 바와 같이, 필라멘트(1) 주위의 작용 공간(2)에서 발생되는 고주파들은 안테나(3)를 통하여 출력부(미도시)로 전달되어 전자레인지의 가열용 캐비티로 전송되며, 필라멘트(1)의 양단에 연결된 센타리드(4) 및 사이드리드(5)의 자유종단으로 전파된 고조파는 쵸크코일(6,7)과 콘덴서(8)의 필터장치에 의해 입력단자(9,10)쪽으로 방출되는 것이 억제되도록 하는 한편, 상기 입력단자(9,10)에서 누출된 고조파들을 외부로 누설되지 않도록 필터장치를 둘러싸고 있는 금속성의 필터박스(11)로 차폐된 구성이다.In order to minimize such harmonic components, as shown in (a) and (b) of FIG. 1, the high frequencies generated in the working space 2 around the filament 1 are output through the antenna 3. Harmonics propagated to the heating cavity of the microwave oven and propagated to the free ends of the center lead 4 and the side lead 5 connected to both ends of the filament 1 are choke coils 6 and 7. And the metallic material surrounding the filter device to prevent the harmonics leaked from the input terminals 9 and 10 from being leaked to the outside while suppressing the discharge toward the input terminals 9 and 10 by the filter device of the condenser 8. The configuration is shielded by the filter box (11).

그러나 이와 같은 종래의 장치는 필터장치를 둘러싸고 있는 필터박스를 체결시 틈새를 완전히 밀봉하기 어렵기 때문에 그 외부로 파장이 짧은 고조파들이 누설되는 단점이 있으며, 또한 필터박스 구조 개선으로써 고조파 차폐효과를 거두기에는 고조파들에 대한 누설전력 규제치가 점점 강화되고 있는 현재의 추세에 비추어 볼때 그 한계가 있었는 바, 본 고안은 이와 같은 사항을 감안하여 창안한 것으로서, 쵸크코일로 직접 전도되는 고조파를 흡수하여 방사하는 구조로 변경함으로서 기존의 차폐효과를 더욱 보강토록 한 마그네트론용 쵸크코일의 고조파 차폐구조를 제공함이 있다.However, such a conventional device has a disadvantage in that it is difficult to completely seal the gap when the filter box surrounding the filter device is fastened, so that harmonics with short wavelengths are leaked to the outside thereof, and the harmonic shielding effect is achieved by improving the filter box structure. In view of the current trend that the leakage power regulation for harmonics is gradually strengthened, the present invention has been developed in view of the above, and the present invention is designed to absorb and radiate harmonics that are directly conducted to the choke coil. By changing the structure, there is provided a harmonic shielding structure of the choke coil for the magnetron to further reinforce the existing shielding effect.

상기의 목적을 달성하기 위한 본 고안은 필라멘트의 양단에 연결된 센타리드 및 사이드리드의 자유종단에 쵸크코일을 연결하되, 상기 센타리드 및 사이드리드에 인접한 쵸크코일의 일단으로 내측으로 만곡되어 형성된 첨단부를 구비하여 센타리드 및 사이드리드를 통한 고조파가 첨단부에 의해 직접 상쇄되도록 한 특징이 있다.The present invention for achieving the above object is to connect the choke coil to the free end of the center lead and the side lead connected to both ends of the filament, the tip portion formed by bending inward to one end of the choke coil adjacent to the center lead and the side lead It is characterized in that the harmonics through the center lead and the side lead is directly offset by the tip.

이하, 첨부된 도면에 의거하여 본 고안의 바람직한 일 실시예를 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 고안은 제1도와 동일한 기술이므로 이에대한 세세한 설명은 피하며, 동일 부호로써 설명한다.Since the present invention is the same technology as in FIG.

제2도는 본 고안 마그네트론용 쵸크코일의 고조파 차폐구조를 설명하기 위한 구성도로서, 필라멘트(1)의 양단에 연결된 센타리드(4) 및 사이드리드(5)의 자유종단에 쵸크코일(6, 7)을 연결하고, 쵸크코일(6, 7) 내부에 페라이트코아(62, 72)를 삽입한 통상의 구조에 있어서, 상기 페라이트코아(62, 72)와 상기 센타리드(4) 및 사이드리드(5)에 인접한 쵸크코일(6, 7)의 일단에 소정길이(L)로 만곡되어 고조파를 흡수 및 방사하는 첨단부(61, 71)가 형성된다. 여기서, 상기 첨단부(61, 71)의 길이는 차폐하고자 하는 고조파의 λ/4길이를 갖도록 한 것이 그 구조상 바람직하다.2 is a configuration diagram for explaining the harmonic shielding structure of the choke coil for the magnetron of the present invention, and the choke coils 6 and 7 are formed at the free ends of the center leads 4 and the side leads 5 connected to both ends of the filament 1. ) And the ferrite cores 62 and 72 are inserted into the choke coils 6 and 7, and the ferrite cores 62 and 72 and the center lead 4 and the side leads 5 are connected. At one end of the choke coils 6 and 7 adjacent to (), the tip portions 61 and 71 are formed to be bent to a predetermined length L to absorb and radiate harmonics. Here, the lengths of the tip portions 61 and 71 are preferably such that the lengths of the tip portions 61 and 71 have a length of λ / 4 of harmonics to be shielded.

상기와 같이 구성된 본 고안은 필라멘트(1) 주위의 작용공간(2)에서 발생되는 고조파들은 필라멘트(1)의 양단에 연결된 센타리드(3) 및 사이드리드(4)를 통하여 페라이트코아(7, 8)가 삽입된 쵸크코일(6, 7)과 콘덴서(10)의 필터장치로 전파되는데, 기존에는 단순히 고조파를 1차로 쵸크코일(5, 6)에서 열로 소비시키고 그 나머지는 콘덴서(10)를 통해 접지측으로 바이패스 시킴으로써 억제시켰던 것을, 본 고안에 의한 고조파 차폐는 먼저 센타리드(4) 및 사이드리드(5)를 거쳐 쵸크코일(6, 7)로 방사되기전 쵸크코일(6, 7)에 차폐코자 하는 고조파의 λ/4길이로 형성된 첨단부(61. 71)에 의해 고조파성분을 일부 차폐시킨 후, 그 나머지의 고조파를 인덕터(6+62, 7+72)와 콘덴서(8)의 필터장치에 의해 입력단자(9, 10)쪽으로 방출되는 것이 억제토록 한다.According to the present invention, the harmonics generated in the working space 2 around the filament 1 are ferrite cores 7 and 8 through the center lead 3 and the side lead 4 connected to both ends of the filament 1. ) Is propagated to the filter device of the choke coil (6, 7) and the condenser 10 is inserted, conventionally simply consumes harmonics as heat from the choke coil (5, 6) first and the rest through the condenser (10) The harmonic shielding according to the present invention, which was suppressed by bypassing to the ground side, is first shielded to the choke coils 6 and 7 before being radiated to the choke coils 6 and 7 via the center lead 4 and the side leads 5. After partially shielding the harmonic components by the tip portion 61. 71 formed by the lambda / 4 length of the harmonic to be described, the remaining harmonics are filtered into the inductors 6 + 62 and 7 + 72 and the capacitor 8. Is suppressed from being discharged toward the input terminals 9 and 10.

물론, 필터장치를 둘러싸고 있는 금속성 필터박스(11)에 의해 그 나머지가 완전 차폐되어 고조파를 외부로 누설되지 않게 함은 당연하다.Of course, it is a matter of course that the remainder is completely shielded by the metallic filter box 11 surrounding the filter device so that harmonics are not leaked to the outside.

이상에서 살펴본 바와 같이 본 고안은 쵸크코일의 간단한 구조개선으로, 기존보다 고조파의 차폐효과를 극대화할 수 있는 이점이 있다.As described above, the present invention has the advantage of maximizing the shielding effect of harmonics as compared to the conventional simple structure improvement of the choke coil.

이상의 설명은 본 고안의 일 실시예에 불과하며, 본 고안의 그 구성요지 범위내에서 얼마든지 변경 및 개조가 가능하다.The above description is only one embodiment of the present invention, and any number of changes and modifications can be made within the scope of the present invention.

Claims (2)

(정정)필라멘트(1)의 센타리드(4) 및 사이드 리드(5)에 연결되는 쵸크코일(6, 7)을 각각 구성에 있어서, 상기 쵸크코일(6, 7)에서 센타리드(4) 및 사이드리드(5)에 접속되는 부위 중간에 고조파의 λ/4길이로 만곡된 첨단부(61, 71)를 형성하여 된 것을 특징으로 하는 마그네트론용 쵸크코일의 고조파 차폐구조.(Correction) The choke coils 6 and 7 connected to the center lead 4 and the side lid 5 of the filament 1 are respectively constructed in that the choke coils 6 and 7 have the center leads 4 and 7. A harmonic shielding structure of a choke coil for a magnetron, characterized in that a tip portion (61, 71) curved at a lambda / 4 length of harmonic is formed in the middle of a portion connected to the side lead (5). (삭제)(delete)
KR2019960023144U 1996-07-31 1996-07-31 A shield structure of non-harmonic oscillation frequency of chock coil for magnetron KR200155128Y1 (en)

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