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    • 1. 发明授权
    • Magnetron with external terminals having connecting portions which are air-tightly connected to cathode leads
    • 具有外部端子的磁控管具有气密地连接到阴极引线的连接部分
    • US06696790B2
    • 2004-02-24
    • US10154809
    • 2002-05-28
    • Noriyuki MuraoKazuki MikiSetsuo HasegawaNoriyuki OkadaSatoshi Nakai
    • Noriyuki MuraoKazuki MikiSetsuo HasegawaNoriyuki OkadaSatoshi Nakai
    • H01J2550
    • H01J23/14H01J2225/50
    • A magnetron including a tubular metallic container which is air-tightly connected to an anode, cathode leads for supporting a cathode with filaments being disposed in a central axial portion of the anode, a stem insulator formed with through holes through which the cathode leads pass, and external terminals formed with planar portions which are air-tightly connected to a surface of the stem insulator opposite to a surface facing the tubular metallic container and with connecting portions which are air-tightly connected to the cathode leads. The connecting portions are arranged to be bent in an axial direction of the cathode leads. It is possible to exhibit the effect of preventing vacuum break from occurring by oxidation or the like since the increase in the area of the connecting portions will result in elongation of the distance between the end portions of the connecting portions and the through holes.
    • 一种磁控管,其包括气密地连接到阳极的管状金属容器,阴极引线,用于支撑阴极,灯丝设置在阳极的中心轴向部分;杆绝缘子,其形成有阴极引线通过的通孔, 以及形成有平坦部分的外部端子,其气密地连接到与所述管状金属容器相对的表面的所述杆绝缘体的表面,以及气密地连接到所述阴极引线的连接部分。 连接部被布置成沿着阴极引线的轴向弯曲。 由于连接部分的面积的增加将导致连接部分的端部和通孔之间的距离的伸长,所以可以表现出通过氧化等发生防止真空断裂的效果。
    • 2. 发明授权
    • Method for making magnetrons
    • 制造磁控管的方法
    • US06729926B2
    • 2004-05-04
    • US10020766
    • 2001-12-12
    • Noriyuki MuraoKazuki MikiSatoshi NakaiSetsuo HasegawaNoriyuki Okada
    • Noriyuki MuraoKazuki MikiSatoshi NakaiSetsuo HasegawaNoriyuki Okada
    • H01J914
    • H01J23/165H01J2223/16H01J2225/50H01J2225/587
    • A magnetron has an anode cylinder, a plurality of vanes arranged radially within the anode cylinder, a magnetic piece disposed at an open end section of the anode cylinder, an anode vacuum container including a metal container disposed to cover an upper surface of the magnetic piece, a cathode disposed along a central axis of the vacuum container, and an antenna externally discharging microwaves. The magnetic piece and the metal container are placed, in that order, on a shelf formed inwardly on a thin end section projecting from the open end section of the anode cylinder. When tightly welding the thin end section, a predetermined number of projections, projecting inwardly from the thin end section of the anode cylinder, loosely secure an outer perimeter bend of the metal container. The metal container is then accurately tightly welded to the anode cylinder without the metal container shifting off-center.
    • 磁控管具有阳极筒,在阳极筒内径向设置的多个叶片,设置在阳极筒的开口端部的磁性片,阳极真空容器,其包括设置成覆盖磁性片的上表面的金属容器 ,沿着真空容器的中心轴设置的阴极和从外部排出微波的天线。 磁片和金属容器依次放置在从阳极圆筒的开口端突出的薄端部分上向内形成的搁板上。 当紧密焊接薄端部时,从阳极筒的薄端部向内突出的预定数量的突起松动地固定金属容器的外周弯曲部。 然后将金属容器准确地紧密地焊接到阳极筒,而不会使金属容器偏离中心。
    • 5. 发明授权
    • Magnetron with a fifth harmonic choke
    • 磁控管具有五次谐波扼流圈
    • US5894198A
    • 1999-04-13
    • US818016
    • 1997-03-14
    • Kazuki MikiNoriyuki MuraoSetsuo Hasegawa
    • Kazuki MikiNoriyuki MuraoSetsuo Hasegawa
    • H01J23/54
    • H01J23/54H01J2225/50
    • A magnetron including: an anode cylinder in which a plurality of vanes are formed, a filament provided at a center of the anode cylinder, a top hat which supports an upper end of the filament, a top lead for connecting the top hat at an upper end of the top lead, an end hat which supports a lower end of the filament, an end lead for connecting the end hat at an upper end of the end lead, a stem metal hermetically sealed at an open end of the anode cylinder through a pole piece, and a choke disposed inside the stem metal, wherein the choke is disposed approximately in a position of wavelength of a predetermined high frequency from the top hat in a distance along a surface of the top lead. It is possible to suppress generation of undesired high frequency, especially of the fifth high frequency, from the input portion.
    • 一种磁控管,包括:阳极筒,其中形成有多个叶片,设置在阳极筒的中心的灯丝,支撑灯丝上端的顶帽,用于将顶帽连接在上部的顶部导线 顶部引线的端部,支撑长丝的下端的端帽,用于在端部引线的上端连接端帽的端部引线,通过一个阳极筒的开口端气密地密封的杆金属 极片和设置在杆状金属内部的扼流器,其中扼流圈大致位于距离顶帽一定距离的预定高频波长的位置,沿着顶引线的表面一定距离。 可以抑制从输入部分产生不想要的高频,特别是抑制第五高频的产生。
    • 7. 发明授权
    • Magnetron with harmonic suppression means
    • 磁控管具有谐波抑制手段
    • US5049782A
    • 1991-09-17
    • US303929
    • 1989-01-30
    • Masayuki AigaKazuki Miki
    • Masayuki AigaKazuki Miki
    • H01J23/04H01J23/11H01J23/15H01J23/54H01J25/587
    • H01J23/05H01J23/54H01J25/587
    • In an interaction space (4) defined between a cathode (3) and forward end portions of vanes (2), a permanent magnet (12) applies a uniform direct-current magnetic field along an axial direction of the cathode (3). Direct-current or low-frequency high voltage is applied between the cathode (3) and the respective vanes (2). Spaces (14) enclosed by respective pairs of adjacent vanes (2) and the inner wall of an anode cylinder (1) define cavity resonators. High-frequency electric fields formed in the cavity resonators are concentrated to the forward end portions of the vanes (2), and partially leak into the interaction space (4). Under such conditions, an electron group emitted from the cathode (3) rotates about the cathode (3) in the interaction space (4), thereby interaction takes place between the electron group and the high-frequency electric fields, to oscillate microwaves. The inner surface of a flange part (6) of a top hat (7) supporting one end of a filament (5) of the cathode (3) is located in a position closer to the interaction spaces (4) by length within a range of 0.1 to 0.6 mm from first end surfaces of the vanes (2) along the axial direction, thereby to suppress undesired fifth harmonic generated with the microwaves of a basic frequency at this time.