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    • 73. 发明公开
    • Magnetron for microwave oven
    • Magnetronfüreinen Mikrowellenherd。
    • EP0263491A2
    • 1988-04-13
    • EP87114586.8
    • 1987-10-06
    • KABUSHIKI KAISHA TOSHIBA
    • Kinuno, Masanori c/o Patent DivisionSaito, Hisao c/o Patent DivisionKousaka, Akira c/o Patent DivisionKawaguchi, Toshio c/o Patent Division
    • H01J23/10H01J25/587
    • H01J25/587H01J23/10
    • In a magnetron, anode vanes (23) are radially arranged in an anode cylinder (22) and fixed to the inner surface of the anode cylinder (22) and a cathode (25) is arrange along a tube axis in the anode cylinder (22). A pole pieces (29, 30) of dish like shape are fixed to openings of the anode cylinder (22) and the anode cylinder (22) is hearmetically sealed by cylin­drical chambers (32, 33). Permanent magnet rings (34, 35) are arranged around the cylindrical chambers (32, 33), respectively and are magnetically coupled by a yoke (36). Each of pole pieces (29, 30) has a flange section (29b, 30b), a flat inner disk section (29a, 30a) and a coupling section (29c, 30c) extending from flange section (29b, 30b) to flat inner disk section (29, 30a). The outer diameter of pole piece (29, 30) is larger than 160% the diameter of an envelope defined by inner ends of said anode vanes (23). A envelope space contacting the inner ends of said anode vanes has a predetermined magnetic field intensity distribution which is produced by a magnetic flux supplied from pole piece (29, 30) and has a difference of not more than 15% along tube axis.
    • 在磁控管中,阳极叶片(23)径向布置在阳极筒(22)中并固定到阳极筒(22)的内表面,阴极(25)沿阳极筒(22)的管轴排列 )。 碟状的极片(29,30)固定在阳极筒(22)的开口部,阳极筒(22)被圆柱形的腔室(32,33)不可靠地密封。 永磁体环(34,35)分别围绕圆柱形腔室(32,33)设置,并通过轭架(36)磁耦合。 每个极片(29,30)具有凸缘部分(29b,30b),平坦的内圆盘部分(29a,30a)和从凸缘部分(29b,30b)延伸到平坦内部的联接部分(29c,30c) 盘部分(29,30a)。 极片(29,30)的外径大于由所述阳极叶片(23)的内端限定的外壳的直径的160%。 与所述阳极叶片的内端接触的信封空间具有预定的磁场强度分布,其由从极片(2​​9,30)提供的磁通量产生,并且沿着管轴具有不大于15%的差。
    • 77. 发明专利
    • Permanent magnet device
    • 永久磁铁装置
    • JPS59114729A
    • 1984-07-02
    • JP22516282
    • 1982-12-22
    • Nec Corp
    • SATOU HISAAKI
    • H01J23/087H01J23/10
    • H01J23/10
    • PURPOSE:To reduce unwanted leakage magnetic field and realize reduction in size of magnet by cutting the upper and lower pole piece magnets like a through groove from the surface in the opposite side of the center gap to the magnetizing direction of said magnets. CONSTITUTION:A large groove is provided in the direction at a right angle to the center axis of magnetizing direction of magnet so that the surface not bonded to magnets in the upper pole piece 1 and lower pole piece 2 is almost removed. With such a structure, various kinds of leakage magnetic fields can be fantastically reduced and a magnet can be reduced in size.
    • 目的:为了减少不必要的泄漏磁场,通过从中心间隙的相对侧到磁体的磁化方向的表面切割上,下极片磁铁,像通孔那样,减小磁体的尺寸。 构成:在与磁体的磁化方向的中心轴线成直角的方向上设置有大的槽,使得未与上极片1和下极片2中的磁体接合的表面几乎被去除。 通过这样的结构,可以使各种泄漏磁场急剧减少,并且可以减小磁体的尺寸。
    • 78. 发明申请
    • Magnetron
    • 磁控管
    • US20160163494A1
    • 2016-06-09
    • US14950818
    • 2015-11-24
    • Toshiba Hokuto Electronics Corporation
    • Naoya Kato
    • H01J25/50H01J23/10
    • H01J25/50H01J23/04H01J23/05H01J23/10H01J25/52H01J25/587
    • To provide a magnetron improved in high efficiency and load stability while suppressing costs. By shortening the height of vane Vh so that the ratio of the height of vane Vh to a gap between end hats EHg (EHg/Vh) satisfies a condition 1.12≦EHg/Vh≦1.26, an input side pole piece-vane gap IPpvg becomes larger than an output side pole piece-vane gap OPpvg, and an input side end hat-vane gap IPevg becomes larger than an output side end hat-vane gap OPevg, load stability at high efficiency can be improved while shortening the height of vane Vh. Therefore, it is possible to provide a magnetron improved in high efficiency and load stability while suppressing costs.
    • 提供高效率和负载稳定性的磁控管,同时抑制成本。 通过缩短叶片Vh的高度,使得叶片Vh的高度与端帽EHg(EHg / Vh)之间的间隙的比率满足条件1.12< NlE; EHg / Vh≦̸ 1.26,输入侧极片 - 叶片间隙IPpvg 变得大于输出侧极片 - 叶片间隙OPpvg,并且输入侧端帽 - 叶片间隙IPevg变得大于输出侧端帽 - 叶片间隙OPevg,可以在缩短叶片高度的同时提高高效率的负载稳定性 呃 因此,可以在抑制成本的同时提供高效率和负载稳定性提高的磁控管。
    • 80. 发明授权
    • Compact magnet design for high-power magnetrons
    • 紧凑型磁铁设计用于大功率磁控管
    • US09184018B2
    • 2015-11-10
    • US14220078
    • 2014-03-19
    • Raytheon Company
    • Donald J. SullivanMichael A. MostromSean A. SullivanRichard W. Johnson
    • H01J25/50H01J23/10
    • H01J23/10H01J25/50
    • A high-power magnetron assembly includes a high-power magnetron and a compact magnetic field generator. The high-power magnetron includes a cathode configured to emit electrons in response to receiving a supply of voltage from a power supply. The high-power magnetron includes an anode configured to concentrically surround the cathode and to attract the emitted electrons across an interaction region between the cathode and the anode. The compact magnetic field generator includes a plurality of permanent magnets including: a cathode magnet that has a longitudinal axis of symmetry annularly and that is surrounded by the cathode and disposed within the magnetron; and an anode magnet configured to annularly surround an outer perimeter of the magnetron. An arrangement of the plurality of permanent magnets concentrically about the longitudinal axis of symmetry forms a specified magnetic field within the interaction region that bounds the electrons emitted within the interaction region.
    • 大功率磁控管组件包括大功率磁控管和紧凑型磁场发生器。 大功率磁控管包括配置为响应于从电源接收电压的电源而发射电子的阴极。 高功率磁控管包括阳极,该阳极构造成同心地围绕阴极并且吸引发射的电子穿过阴极和阳极之间的相互作用区域。 小型磁场发生器包括多个永磁体,包括:阴极磁体,其具有环形的对称的纵向轴线并被阴极包围并设置在磁控管内; 以及阳极磁体,其构造成环形地围绕磁控管的外周。 围绕纵向对称轴同心地布置的多个永磁体的布置在相互作用区域内形成限定在相互作用区域内发射的电子的特定磁场。