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    • 3. 发明授权
    • Power control apparatus for high-frequency dielectric heating and power control method for the same
    • 用于高频介质加热和功率控制方法的功率控制装置相同
    • US08258446B2
    • 2012-09-04
    • US12620920
    • 2009-11-18
    • Haruo SuenagaKenji YasuiShinichi SakaiNobuo ShirokawaHideaki MoriyaManabu Kinoshita
    • Haruo SuenagaKenji YasuiShinichi SakaiNobuo ShirokawaHideaki MoriyaManabu Kinoshita
    • H05B6/66H05B6/68
    • H05B6/685Y02B40/143
    • A power control unit for high-frequency dielectric heating is provided. The power control includes an input current detection section for detecting input current from an AC power supply to an inverter circuit and outputting input current waveform information. A conversion section converts the input current waveform information into a drive signal of the switching transistor of the inverter circuit so that instantaneous fluctuation of the input current waveform information is suppressed. An input voltage detection section detects input voltage from the AC power supply to the inverter circuit and outputs input voltage waveform information. A selection section selects the input current waveform information or the input voltage waveform information, whichever is larger. The conversion section also converts the selected input current waveform information or input voltage waveform information into the drive signal of the switching transistor of the inverter circuit.
    • 提供了用于高频介电加热的功率控制单元。 功率控制包括:输入电流检测部分,用于检测来自AC电源到逆变器电路的输入电流,并输出输入电流波形信息。 转换部分将输入电流波形信息转换成逆变器电路的开关晶体管的驱动信号,从而抑制输入电流波形信息的瞬时波动。 输入电压检测部分检测来自逆变器电路的交流电源的输入电压,并输出输入电压波形信息。 选择部分选择输入电流波形信息或输入电压波形信息,以较大者为准。 转换部分还将选择的输入电流波形信息或输入电压波形信息转换为逆变器电路的开关晶体管的驱动信号。
    • 4. 发明授权
    • Electromagnetic transducer
    • 电磁换能器
    • US08222984B2
    • 2012-07-17
    • US12675929
    • 2008-10-20
    • Shinichi SakaiSeiki SuzukiKanji Shinkawa
    • Shinichi SakaiSeiki SuzukiKanji Shinkawa
    • H01F7/00
    • H04R9/047
    • Two layers of a plurality of rod-like permanent magnets each having a width Wm, a thickness Tm and a predetermined length are aligned on a plane in such a way that they have opposite magnetic pole orientations alternately and are aligned at a fixed pole pitch τp are arranged to be opposed to each other with the magnetic pole orientation of each magnet in one of the layers being identical to that of the opposing magnet in the other layer. The opposing surfaces of the magnets are spaced a distance 2×lg from each other, and a vibrating membrane on which coils each having a conductive pattern are arranged is placed in a gap between any two adjacent rod-like permanent magnets in each of the two layers, where lg is a distance from the vibrating membrane to the surface of a magnet. The arrangement of the rod-like permanent magnets is optimized by using Wm, Tm, τp, and lg.
    • 每个具有宽度Wm,厚度Tm和预定长度的多个棒状永磁体的两层在一个平面上对准,使得它们具有相反的磁极取向并且以固定的极点间距τp 被布置成彼此相对,其中一个层中的每个磁体的磁极取向与另一层中的相对磁体的磁极取向相同。 磁体的相对表面彼此间隔2×lg,并且在其上布置有各自具有导电图案的线圈的振动膜被放置在两个相邻的棒状永久磁铁中的每一个中的间隙中 层,其中lg是从振动膜到磁体表面的距离。 通过使用Wm,Tm,τp和lg优化棒状永磁体的布置。
    • 7. 发明申请
    • POWER CONTROL APPARATUS FOR HIGH-FREQUENCY DIELECTRIC HEATING AND POWER CONTROL METHOD FOR THE SAME
    • 用于高频电介质加热的功率控制装置及其功率控制方法
    • US20090289056A1
    • 2009-11-26
    • US12094257
    • 2006-11-22
    • Haruo SuenagaKenji YasuiShinichi SakaiNobuo ShirokawaHideaki MoriyaManabu Kinoshita
    • Haruo SuenagaKenji YasuiShinichi SakaiNobuo ShirokawaHideaki MoriyaManabu Kinoshita
    • H05B6/50
    • H05B6/685Y02B40/143
    • A power control unit for high-frequency dielectric heating not affected by variations in the types or the characteristics of magnetrons, power supply voltage fluctuation, etc., is provided.The unit has an input current detection section 71, 72 for detecting input current of an inverter circuit 10 for rectifying 31 AC power supply voltage 20, performing high frequency switching, and converting into high frequency power, mixes input current waveform information 90 of the input current detection section and power control information 91 for controlling so that output of the input current detection section becomes a predetermined value in a mix circuit 81, outputs ON voltage information 92, makes a comparison between the ON voltage information and a sawtooth wave from a sawtooth wave generation circuit 83 in a PWM comparator 82, performs pulse width modulation, and outputs a drive signal for controlling turning on/off of a switching transistor 39 of an inverter circuit.
    • 提供了不受磁控管的类型或特性的变化影响的高频介电加热的电力控制单元,电源电压波动等。 该单元具有用于检测用于整流31交流电源电压20的逆变器电路10的输入电流,进行高频切换并转换成高频电力的输入电流检测部分71,72,混合输入的输入电流波形信息90 电流检测部分和功率控制信息91,用于控制使得输入电流检测部分的输出在混合电路81中变为预定值,输出接通电压信息92,将来自锯齿波的导通电压信息和锯齿波之间的比较 PWM比较器82中的波形发生电路83进行脉冲宽度调制,并输出用于控制逆变器电路的开关晶体管39的导通/截止的驱动信号。
    • 8. 发明申请
    • High-Frequency Heating Apparatus
    • 高频加热装置
    • US20080272115A1
    • 2008-11-06
    • US10599961
    • 2005-04-22
    • Haruo SuenagaHideaki MoriyaShinichi SakaiHisashi MorikawaToyotsugu MatsukuraNobuo Shirokawa
    • Haruo SuenagaHideaki MoriyaShinichi SakaiHisashi MorikawaToyotsugu MatsukuraNobuo Shirokawa
    • H05B6/64
    • H05B6/666H02M3/33569
    • A purpose of the present invention is to provide an inverter circuit capable of suppressing an overshooting phenomenon of an input current at an instantaneous time when an initiating operation of the inverter circuit is switched to the normal operation thereof, and thus, capable of preventing damages of IGBTs and a magnetron.In a high frequency heating apparatus comprising: a control signal forming circuit for forming a control signal from a difference between an input current of an AC power supply and a reference current; a frequency modulated signal forming circuit for correcting rectified voltage/rectified current which are obtained by rectifying the AC voltage/current of the AC power supply based upon the control signal of the control signal forming circuit; and a dead time forming circuit for receiving the output of the frequency modulated signal forming circuit, a control signal converting circuit having a function capable of further lowering the value of the control signal is provided between the control signal forming circuit and the frequency modulated signal forming circuit.
    • 本发明的目的是提供一种逆变器电路,其能够在将逆变器电路的启动操作切换到其正常操作的瞬时时抑制输入电流的过冲现象,从而能够防止损坏 IGBT和磁控管。 一种高频加热装置,包括:控制信号形成电路,用于根据交流电源的输入电流与参考电流之间的差异形成控制信号; 基于所述控制信号形成电路的控制信号,对所述交流电源的交流电压/电流进行整流而得到的整流电压/整流电流的频率调制信号形成电路; 以及用于接收频率调制信号形成电路的输出的死区时间形成电路,具有能够进一步降低控制信号的值的控制信号转换电路被提供在控制信号形成电路和调制信号形成之间 电路。