KR910007649Y1 - Fast-heated type cathode - Google Patents

Fast-heated type cathode Download PDF

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Publication number
KR910007649Y1
KR910007649Y1 KR2019880017261U KR880017261U KR910007649Y1 KR 910007649 Y1 KR910007649 Y1 KR 910007649Y1 KR 2019880017261 U KR2019880017261 U KR 2019880017261U KR 880017261 U KR880017261 U KR 880017261U KR 910007649 Y1 KR910007649 Y1 KR 910007649Y1
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South Korea
Prior art keywords
heater
electron
heat
resistant porous
porous gas
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KR2019880017261U
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Korean (ko)
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KR900009061U (en
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손경천
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삼성전관 주식회사
김정배
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/04Cathodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/48Electron guns
    • H01J2229/4803Electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/48Electron guns
    • H01J2229/4824Constructional arrangements of electrodes

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  • Solid Thermionic Cathode (AREA)

Abstract

내용 없음.No content.

Description

급속가열형 음극Rapid Heat Cathode

제1도는 종래의 음극 측단면도.1 is a side view of a conventional cathode.

제2도는 본 고안의 음극 측단면도.2 is a side cross-sectional view of the negative electrode of the present invention.

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

1 : 히이터 2 : 슬라이브1: Heater 2: Slave

2' : 내측홈 3 : 전자 방출물질2 ': inner groove 3: electron emitting material

본 고안은 급속가열형 음극에 관한 것이다.The present invention relates to a rapid heating cathode.

일반적으로 촬상관, 진행파관, 클라이스트론 등의 전자총에 사용되는 음극은 신속한 가열과 전자방출의 효율이 좋은 것이 요망된다.In general, the cathode used for an electron gun such as an imaging tube, a traveling wave tube, and a klystron is desired to have rapid heating and good electron emission efficiency.

전자 방출의 효율을 높이기 위하여서는 여러가지 방안을 생각할 수 있겠으나, 열전자 방출물질과 이를 수용하고 있는 홀더의 온도분포를 균일하게 하고, 음극의 동작온도를 낮추어 가열에 필요한 시간을 줄이는것이 선결되어야 한다.In order to increase the efficiency of electron emission, various methods can be considered, but it is necessary to uniformize the temperature distribution of the hot electron emission material and the holder containing the same, and reduce the time required for heating by lowering the operating temperature of the cathode.

그러나 종래의 음극은 제1도에 도시한 바와같이, 절연 피복된 히이터(1)이 슬라이브(2)내에 설치되고 그 상측방으로 전자방출물질(3)이 수용된 홀더(4)가 스포트 용접이나 전기저항 용접등으로 융착되어 일체를 형성하고 있다.However, in the conventional cathode, as shown in FIG. 1, the holder 4 in which the insulation-coated heater 1 is installed in the slave 2 and in which the electron-emitting material 3 is accommodated is placed on the upper side thereof. It is fused by electric resistance welding or the like to form an integral part.

이러한 구성을 하고 있는 음극은 전자 방출물질(3)이 하측에 설치되어 있는 히이터(1)에 의해 가열됨에 따라 가열시간이 길어지는 문제점이 있다.The negative electrode having such a configuration has a problem that the heating time is long as the electron emission material 3 is heated by the heater 1 provided at the lower side.

이는 음극의 동작 온도가 높아지는 원인의 하나이기도 하다.This is also one of the reasons that the operating temperature of the cathode increases.

그리고 이러한 구성에 의해 가열되는 전자 방출물 질이나 그를 함유하고 있는 내열성 다공질기체(其)의 상하온도 균일하게 되지 않게되어 전자방출의 효율이 저하되는 문제점이 있다.In addition, there is a problem in that the up and down temperature of the electron emission material or the heat resistant porous gas containing the same is not uniformed by this configuration, and the efficiency of electron emission is lowered.

본 고안은 전기한 종래 음극이 갖는 제반 문제점을 해소하기 위하여 안출한 것으로서, 전자방출물질의 가열시간을 단축시키고, 내열성 다공질 기체의 열전달을 빠르게하여 균일한 온도분포가 되게 하므로서 전자방출의 효율을 향상시킬 수 있는 급속 가열형 음극을 제공함에 그 목적이 있다.The present invention has been devised to solve all the problems of the conventional cathode, which shortens the heating time of the electron-emitting material and improves the efficiency of electron emission by speeding up the heat transfer of the heat-resistant porous gas to make a uniform temperature distribution. The purpose is to provide a rapid heating type cathode which can be made.

이의 실현을 위하여 본 고안은 전자 방출물질과 내열성 다공질기체를 수용하는 홀더를 슬리이브와 일체로 형성하고, 내열성 다공질기체의 외주측에 히이터를 매립 설치하여 열전달을 빠르게 하도록 구성함을 그 특징으로 하는 있다.In order to realize this, the present invention is characterized in that the holder for receiving the electron-emitting material and the heat-resistant porous gas is integrally formed with the sleeve, and the heater is embedded in the outer circumferential side of the heat-resistant porous gas to speed heat transfer. have.

이하 본 고안을 첨부한 도면에 의거하여 실시예에 따라 설명하면 다음과 같다.Hereinafter, the present invention will be described according to embodiments based on the accompanying drawings.

제2도는 본 고안의 음극 구조를 나타내는 도면으로서, 제1도와 동일 가능을 갖는 부분에 대하여서는 동일부호를 지칭한다.2 is a view showing a negative electrode structure of the present invention, the same reference numerals for the parts having the same possibility as FIG.

슬라이브(2)에는 히이터(1)의 나선상으로 매립 설치 되어 있으며, 슬라이브(2)의 내측홈(2')에 충전된 전자 방출물질(3)이 내열성 다공질기체의 기공내에 함침 되어 전기한 히이터(1)이 감싸는 상태로 설치되어 있다.The slab 2 is embedded in the spiral of the heater 1, and the electron-emitting material 3 filled in the inner groove 2 'of the slab 2 is impregnated in the pores of the heat resistant porous gas to be electrically charged. The heater 1 is provided in a wrapped state.

상기한 슬리이브(2)는 절연성과 내열성을 갖는 재료로서, 예를들면 산화 알루미나 분말을 소망의 형성으로 프레스하여 소성시킴으로써 얻어지는 세라믹을 사용하는 것이 좋다.The sleeve 2 is a material having insulation and heat resistance. For example, it is preferable to use a ceramic obtained by pressing and baking the alumina oxide powder in a desired formation.

슬라이브(2)의 내부에는 히이터(1)는 내측홈(2')에 보다 근접하여 위치함으로써 이 내측홈(2')로 수용되는 전자방출 물질(3)을 직접 가열할 수 있게 된다.The heater 1 is located closer to the inner groove 2 'in the slide 2, so that the electron-emitting material 3 received in the inner groove 2' can be directly heated.

도시한 예에 따르면 내측홈(2')를 둘러싸는 코일형태로 만들어진 히이터(1)를 적당한 바렐의 외주에 감아 붙인채로 펀치 프레스의 다이 중심에 배치한 다음, 소정량의 산호 알루미나 분말을 충전하고, 이어서 상측의 중공펀치를 다이와 형틀 맞춤시켜서 산화 알루미나 분말이 소정의 슬라이브 형태로 성형되게 하여, 형틀 분리시킨 후에 바렐을 빼내면 히이터(1)의 중심에 내측홈(2')이 형성된 소정전의 슬라이브(2)를 얻을 수 있다.According to the illustrated example, the heater 1 made of a coil shape surrounding the inner groove 2 'is wound around the periphery of a suitable barrel and placed at the die center of the punch press, and then filled with a predetermined amount of coral alumina powder. Then, the upper hollow punch is die-formed with the die so that the alumina oxide powder is molded into a predetermined slab shape, and after the mold is separated, the barrel is removed and the inner groove 2 'is formed at the center of the heater 1. Slave 2 can be obtained.

이 슬라이브(2)를 소성하고 내측홈(2')에 전자방출물질(3)을 충전시키면 본 고안의 금속 가열형 음극을 얻게 되는 것이다.The slab 2 is fired and the electron-emitting material 3 is filled in the inner groove 2 ′ to obtain the metal heating cathode of the present invention.

도면중, 미설명 부호 제1그라드를 나타낸다.In the figure, the 1st grade | symbol which is not demonstrated is shown.

이와같이 구성되는 본 고안은 히이터(1)의 전자 방출물질(3)을 둘러싸는 상태로 설치되어 있음에 기인하여 가열시 내열성 다공질기체의 열전달이 빠르게 된다.The present invention configured as described above is installed in a state in which the electron emission material 3 of the heater 1 is enclosed, so that heat transfer of the heat resistant porous gas at the time of heating is accelerated.

이로 인하여 내열성 다공질 기체의 전자 방출물질 (3)표면까지 가열되는 시간이 단축되고, 온도 분포가 균일하게 되어짐에 따라 열전자 방출효율을 증진시킬 수 있게 된다.This shortens the heating time to the surface of the electron-emitting material (3) of the heat-resistant porous gas, and improves the hot electron emission efficiency as the temperature distribution becomes uniform.

또한 본 고안은 내열성 다공질 기체를 히이터(1)의 감싸는 상태로함과 아울러 슬라이브와 전자방출 물질의 홀더를 일체형으로 함으로써, 히이터의 가공을 용이하게 할뿐 아니라 용접등의 조립 공정을 줄일 수 있는 이점이 있다.In addition, the present invention encloses the heat-resistant porous gas of the heater 1, and integrates the holder of the slide and the electron-emitting material, thereby facilitating the processing of the heater and reducing the assembly process such as welding. There is an advantage.

Claims (1)

열전자 방출부와 가열부가 일체로 된 슬라이브(2)의 내츠홈(2')에 내열성 다공질기체에 함침된 전자방출물질(3)이 충전되고, 전기한 내열성 다공질기체를 감싸는 상태로 히이터(1)이 슬라이브(2)에 매립 설치되어짐을 특징으로 하는 급속가열형음극.The heater 1 is filled with the electron-emitting material 3 impregnated in the heat-resistant porous gas in the inner ts groove 2 'of the slide 2 in which the hot electron emission unit and the heating unit are integrated, and surround the electric heat-resistant porous gas. ) Is a rapid heating type cathode, characterized in that the buried in the (2).
KR2019880017261U 1988-10-25 1988-10-25 Fast-heated type cathode KR910007649Y1 (en)

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KR910007649Y1 true KR910007649Y1 (en) 1991-09-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100442273B1 (en) * 2002-06-25 2004-07-30 엘지전자 주식회사 structure for assembling handle assembly in home appliance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100442273B1 (en) * 2002-06-25 2004-07-30 엘지전자 주식회사 structure for assembling handle assembly in home appliance

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KR900009061U (en) 1990-05-03

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