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    • 4. 发明授权
    • Step-up transformer for magnetron driving
    • 升压变压器用于磁控管驱动
    • US06982623B2
    • 2006-01-03
    • US10663146
    • 2003-09-16
    • Keiichi SatouShinichi SakaiKenji YasuiHaruo Suenaga
    • Keiichi SatouShinichi SakaiKenji YasuiHaruo Suenaga
    • H01F17/06
    • H05B6/662H01F3/10H01F27/28H01F30/10H01F2038/003
    • In a step-up transformer for magnetron driving in which two ferrite cores are opposed to each other with a gap G interposed therebetween, thereby forming a magnetic circuit including a middle core section, an outer core section and a coupling core section for coupling the middle core section and the outer core section, and a primary winding and a secondary winding are arranged to surround the middle core respectively, a sectional area of the middle core is increased, a number of winds in a radial direction of each of the primary winding and the secondary winding is increased and a number of winds in an axial direction is decreased, and the primary winding and the secondary winding are provided close to each other and a ratio of the sectional area of the middle core to that of the outer core is decreased to be 2:1 or less.
    • 在用于磁控管驱动的升压变压器中,其中两个铁氧体磁心彼此间隔开间隔开,从而形成一个磁路,它包括一个中间磁芯部分,一个外磁心部分和一个用于将中间部分 芯部和外芯部分,并且初级绕组和次级绕组被分别围绕中间芯部分布,中间芯部的截面面积增加,每个初级绕组的径向方向上的多个风和 次级绕组增加,并且沿轴向的多个风减少,并且初级绕组和次级绕组彼此靠近地设置,并且中间芯部与外部芯部的截面积的比率减小 为2:1或更少。
    • 5. 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。
    • 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
    • US08492687B2
    • 2013-07-23
    • US12620824
    • 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, and includes an input current detection section for detecting input current from the AC power supply to the 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. A mix circuit mixes the input current waveform information and power control information for controlling so that current or voltage at an arbitrary point of the inverter circuit becomes a predetermined value and generates an on voltage signal. The conversion section converts the on voltage signal into the drive signal so that the on time is shortened in the portion where the input current is large and that the on time is prolonged in the portion where the input current is small.
    • 提供了一种用于高频介电加热的功率控制单元,并且包括用于检测来自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的输入电流检测部分。 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。 混合电路混合输入电流波形信息和用于控制的功率控制信息,使得逆变器电路的任意点处的电流或电压变为预定值,并产生导通电压信号。 转换部分将导通电压信号转换为驱动信号,使得在输入电流较大的部分中导通时间缩短,并且输入电流小的部分导通时间延长。