KR970071893A - Cathode structure of magnetron - Google Patents

Cathode structure of magnetron Download PDF

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Publication number
KR970071893A
KR970071893A KR1019960011667A KR19960011667A KR970071893A KR 970071893 A KR970071893 A KR 970071893A KR 1019960011667 A KR1019960011667 A KR 1019960011667A KR 19960011667 A KR19960011667 A KR 19960011667A KR 970071893 A KR970071893 A KR 970071893A
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KR
South Korea
Prior art keywords
cathode
magnetron
microwave
value
permanent magnet
Prior art date
Application number
KR1019960011667A
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Korean (ko)
Other versions
KR100210065B1 (en
Inventor
김권집
손종철
마크 이바노비치 쿠즈네코프
Original Assignee
김광호
삼성전자 주식회사
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Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019960011667A priority Critical patent/KR100210065B1/en
Priority to JP8235588A priority patent/JPH09293456A/en
Publication of KR970071893A publication Critical patent/KR970071893A/en
Application granted granted Critical
Publication of KR100210065B1 publication Critical patent/KR100210065B1/en

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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
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/04—Cathodes
    • H01J23/05—Cathodes having a cylindrical emissive surface, e.g. cathodes for magnetrons

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  • Microwave Tubes (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

본 발명은 전자렌지등의 마이크로파 가열기기에 사용되는 마그네트론에 관한 것으로, 특히 낮은 애노드전압에서도 높은 효율과 출력을 유지하는 마그네트론의 캐소드구조에 관한 것으로써, 열전자를 방출하는 캐소드와, 상기 캐소드로부터 방출되는 전자를 편향하여 회전운동을 유지하도록 자속을 발생하는 영구자석과, 상기 영구자석에서 발생된 자속을 유도하도록 자로를 형성하는 자극편과, 상기 캐소드를 외측에서 둘러싸서 마이크로파를 발생하도록 다수의 베인이 배치된 양극통체와, 상기 양극통체에서 발생된 마이크로파를 유도하는 안테나와, 상기 캐소드에 전원을 공급하도록 상기 캐소드의 중심축을 통과하는 캐소드지지대로 이루어진 것으로, 나선형 캐소드의 필라멘트간격을 조절하여 2KV의 낮은 애노드전압에서도 70%의 높은 효율과 출력을 얻을 수 있다는 효과가 있다.The present invention relates to a magnetron used in a microwave heating apparatus such as a microwave oven, and particularly relates to a cathode structure of a magnetron that maintains high efficiency and output even at a low anode voltage. The cathode structure includes a cathode that emits a hot electron, A magnetic pole piece for forming a magnetic path to induce a magnetic flux generated in the permanent magnet, and a plurality of vanes for generating a microwave by surrounding the cathode from the outside, An antenna for guiding a microwave generated in the cathode tube, and a cathode support for passing the center axis of the cathode to supply power to the cathode. The filament spacing of the spiral cathode is adjusted to be 2KV High efficiency and efficiency of 70% even at low anode voltage There is an effect that can be achieved.

Description

마그네트론의 캐소드구조Cathode structure of magnetron

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제5도는 본 발명의 일실시예에 의한 캐소드의 확대단면도, 제6도는 본 발명의 일실시예에 의한 캐소드의 등가단면도.FIG. 5 is an enlarged sectional view of a cathode according to an embodiment of the present invention; FIG. 6 is an equivalent sectional view of a cathode according to an embodiment of the present invention;

Claims (4)

열전자를 방출하는 캐소드와, 상기 캐소드로부터 방출되는 전자를 편향하여 회전운동을 유지하도록 자속을 발생하는 영구자석과, 상기 영구자석에서 발생된 자속을 유도하도록 자로를 형성하는 자극편과, 상기 캐소드를 외측에서 둘러싸서 마이크로파를 발생하도록 다수의 메인이 배치된 양극통체와, 상기 양극통체에서 발생된 마이크로파를 유도하는 안테나와, 상기 캐소드에 전원을 공급하도록 상기 캐소드의 중심축을 통과하는 캐소드지지대로 이루어진 것을 특징으로 하는 마그네트론의 캐소드구조.A permanent magnet for generating a magnetic flux for deflecting electrons emitted from the cathode to maintain a rotational motion; a magnetic pole piece for forming a magnetic path for inducing a magnetic flux generated in the permanent magnet; And a cathode support rod passing through the center axis of the cathode to supply power to the cathode. The cathode support member includes a plurality of main cores disposed to surround the outer periphery of the cathode casing to generate microwaves, an antenna for guiding microwave generated in the cathode casing, Characteristic cathode structure of magnetron. 제1항에 있어서, 상기 캐소드는 2KV의 애노드전압에서 70%의 효율을 얻도록 관계지수(K)값을 조절하는 것을 특징으로 하는 마그네트론의 캐소드 구조.2. The cathode structure of claim 1, wherein the cathode adjusts the relational index (K) value to achieve 70% efficiency at an anode voltage of 2 KV. 제2항에 있어서, 상기 관계지수(K)값은 상기 캐소드의 캐소드스템(s)을 조절하여 결정하는 것을 특징으로 하는 마그네트론의 캐소드 구조.3. The cathode structure of claim 2, wherein the relationship index (K) value is determined by adjusting the cathode stem (s) of the cathode. 제2항에 있어서, 상기 관계지수(K)값은 3.7 이하인 것을 특징으로 하는 마그네트론의 캐소드구조.3. The structure of claim 2, wherein the relational index (K) value is 3.7 or less. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960011667A 1996-04-17 1996-04-17 Cathode structure of magnetron KR100210065B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019960011667A KR100210065B1 (en) 1996-04-17 1996-04-17 Cathode structure of magnetron
JP8235588A JPH09293456A (en) 1996-04-17 1996-09-05 Cathode structure for magnetron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960011667A KR100210065B1 (en) 1996-04-17 1996-04-17 Cathode structure of magnetron

Publications (2)

Publication Number Publication Date
KR970071893A true KR970071893A (en) 1997-11-07
KR100210065B1 KR100210065B1 (en) 1999-07-15

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JP (1) JPH09293456A (en)
KR (1) KR100210065B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1286379B1 (en) * 2001-08-22 2012-05-09 Panasonic Corporation Magnetron
JP6282811B2 (en) * 2012-07-09 2018-02-21 東芝ホクト電子株式会社 Plasma light emitting device and electromagnetic wave generator used therefor
JP5560366B1 (en) * 2013-12-18 2014-07-23 株式会社日立パワーソリューションズ Microwave heating device
US10395880B2 (en) * 2017-08-21 2019-08-27 Varex Imaging Corporation Electron gun adjustment in a vacuum

Also Published As

Publication number Publication date
KR100210065B1 (en) 1999-07-15
JPH09293456A (en) 1997-11-11

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