公开(公告)号：US11558936B2

公开(公告)日：2023-01-17

申请号：US16611200

申请日：2018-06-28

申请人： Panasonic Corporation

发明人： Koji Yoshino ,  Masayuki Kubo ,  Osamu Hashimoto ,  Ryosuke Suga

IPC分类号： H05B6/68 ,  H05B6/66 ,  H05B6/72

摘要： A microwave treatment apparatus includes a treatment chamber, a microwave supply, and a resonator unit. The treatment chamber is surrounded by a plurality of walls, and accommodates a heating target. The microwave supply supplies a microwave to the treatment chamber. The resonator unit is provided on one wall of the plurality of walls, and the resonator unit has a resonance frequency in a frequency band of the microwave. In this embodiment, the impedance of the surface of the resonator unit can be changed by controlling the frequency of the microwave supplied to the treatment chamber. This makes it possible to control the standing wave distribution within the treatment chamber, that is, the microwave energy distribution within the treatment chamber. As a result, in the cases where a plurality of heating targets need to be heated simultaneously, desired dielectric heating is conducted for each of the heating targets.

公开(公告)号：US11382187B2

公开(公告)日：2022-07-05

申请号：US16472959

申请日：2017-12-25

申请人： Panasonic Corporation

发明人： Masafumi Sadahira ,  Koji Yoshino ,  Masayuki Kubo ,  Osamu Hashimoto ,  Ryosuke Suga

IPC分类号： H05B6/64 ,  H05B6/74

摘要： A microwave heating device includes a heating chamber that accommodates an object to be heated, a microwave generator configured to generate microwaves, a wave guide tube configured to guide the microwaves to the heating chamber, and an electromagnetic field distribution adjustment device provided in a predetermined two-dimensional region within the heating chamber. The electromagnetic field distribution adjustment device has a plurality of metal pieces and a plurality of switches. The plurality of metal pieces are arranged to fill the predetermined two-dimensional region. The plurality of switches connect the plurality of metal pieces with one another. A serially connected row of metal pieces is configured by connecting one metal piece among the plurality of metal pieces to at most two metal pieces adjacent to the one metal piece through at least two of the plurality of switches. The present exemplary embodiment can achieve a low-cost electromagnetic field distribution adjustment device that heats an object to be heated more uniformly, while preventing a drop in heating efficiency.