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    Magnetron for microwave oven
    1.
    发明授权
    Magnetron for microwave oven 有权

    公开(公告)号：US10366857B2

    公开(公告)日：2019-07-30

    申请号：US15703002

    申请日：2017-09-13

    申请人： LG ELECTRONICS INC.

    发明人： Haksoon Yang ,  Sunghun Sim ,  Heungsik Choi

    IPC分类号： H01J23/11 ,  H01J25/50 ,  H01J23/15 ,  H05B6/76

    摘要： A magnetron for a microwave oven is provided that decreases noise in an ISM band by minimizing a size of a lower end shield, and thus, minimizing EMI generation. In the magnetron for the microwave oven, as a midpoint of a side lead hole is positioned inside a virtual circle formed by points positioned at a predetermined distance from a midpoint of the shield disc and a side lead is connected in a straight line, there are advantages that a further bending process is not generated and a defective rate that occurs in the manufacturing process of the shield disc may be decreased.

    MAGNETRON AND HIGH-FREQUENCY HEATING APPARATUS HAVING THE SAME
    2.
    发明申请
    MAGNETRON AND HIGH-FREQUENCY HEATING APPARATUS HAVING THE SAME 有权
    MAGNETRON和高频加热装置

    公开(公告)号：US20150170866A1

    公开(公告)日：2015-06-18

    申请号：US14494689

    申请日：2014-09-24

    申请人： SAMSUNG ELECTRONICS CO., LTD.

    发明人： Seung Chul YANG ,  Dang Won KIM ,  Hak Jae KIM ,  Ki Whan KIM

    IPC分类号： H01J23/10 ,  H01J23/11 ,  H01J23/00 ,  H01J23/20 ,  H05B6/66 ,  H01J25/50

    CPC分类号： H01J23/10 ,  H01J23/005 ,  H01J23/11 ,  H01J23/20 ,  H01J25/50 ,  H01J25/587 ,  H05B6/66

    摘要： A magnetron includes a yoke, an anode unit including an anode cylinder, radially arranged vanes, and first and second pole pieces at both sides of the anode cylinder, a cathode unit having a filament spaced apart from the vanes, and an output unit having an antenna lead connected to one vane to radiate high-frequency microwaves. The first pole piece includes a first flat portion, a slope at an inner side of the first flat portion, a second flat portion at an inner side of the slope and having a diameter of 9.5˜10.5 mm, a first hole formed in the second flat portion and having a diameter of 8˜8.2 mm, and a second hole formed in the slope for penetration of the antenna lead. The magnetron achieves higher and stabilized efficiency, restricted oscillation efficiency variation, lower energy consumption, and improved load stability without deterioration of oscillation efficiency.

    摘要翻译： 磁控管包括磁轭，阳极单元，其包括阳极筒，径向布置的叶片，以及在阳极筒两侧的第一和第二极片，具有与叶片间隔开的细丝的阴极单元，以及具有 天线引线连接到一个叶片以辐射高频微波。 第一极片包括第一平坦部分，在第一平坦部分的内侧处的斜面，在斜面的内侧处的第二平坦部分，并且具有直径为9.5至10.5mm的第二平坦部分， 平坦部分，具有8〜8.2mm的直径，以及形成在斜面中用于穿透天线引线的第二孔。 磁控管实现更高和稳定的效率，有限的振荡效率变化，更低的能量消耗和更好的负载稳定性，而不会降低振荡效率。

    Magnetron with harmonic suppression means
    3.
    发明授权
    Magnetron with harmonic suppression means 失效
    磁控管具有谐波抑制手段

    公开(公告)号：US5049782A

    公开(公告)日：1991-09-17

    申请号：US303929

    申请日：1989-01-30

    申请人： Masayuki Aiga ,  Kazuki Miki

    发明人： Masayuki Aiga ,  Kazuki Miki

    IPC分类号： H01J23/04 ,  H01J23/11 ,  H01J23/15 ,  H01J23/54 ,  H01J25/587

    CPC分类号： H01J23/05 ,  H01J23/54 ,  H01J25/587

    摘要： 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.

    MAGNETRON FOR MICROWAVE OVEN
    9.
    发明申请
    MAGNETRON FOR MICROWAVE OVEN 审中-公开

    公开(公告)号：US20180114668A1

    公开(公告)日：2018-04-26

    申请号：US15703002

    申请日：2017-09-13

    申请人： LG ELECTRONICS INC.

    发明人： Haksoon YANG ,  Sunghun Sim ,  Heungsik Choi

    IPC分类号： H01J23/11 ,  H01J25/50

    CPC分类号： H01J23/11 ,  H01J23/15 ,  H01J25/50 ,  H05B6/76

    摘要： A magnetron for a microwave oven is provided that decreases noise in an ISM band by minimizing a size of a lower end shield, and thus, minimizing EMI generation. In the magnetron for the microwave oven, as a midpoint of a side lead hole is positioned inside a virtual circle formed by points positioned at a predetermined distance from a midpoint of the shield disc and a side lead is connected in a straight line, there are advantages that a further bending process is not generated and a defective rate that occurs in the manufacturing process of the shield disc may be decreased.