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    • 2. 发明授权
    • High-frequency heating device employing switching type magnetron power
source
    • 采用开关式磁控管电源的高频加热装置
    • US5300744A
    • 1994-04-05
    • US842144
    • 1992-03-20
    • Naoyoshi MaeharaDaisuke BessyoYuji NakabayashiTakahiro Matsumoto
    • Naoyoshi MaeharaDaisuke BessyoYuji NakabayashiTakahiro Matsumoto
    • H05B6/68H02M7/48H05B6/64H05B6/66
    • H05B6/666H05B2206/043
    • A high-frequency heating device includes a power converter for converting an electric power from a commercial power source or the like into a high-frequency power, a step-up transformer having a high-voltage winding and a low-voltage winding, a magnetron receiving high-voltage and low-voltage outputs, a resonance circuit connected in series or parallel with the filament of the magnetron, and a control circuit. The control circuit controls the power converter so that the operation frequency of the power converter approximately coincides with the resonance frequency of the resonance circuit at the time of activating the power converter to thereby achieve a rapid start of the oscillation operation of the magnetron while suppressing a high voltage from taking place at the activation time to prevent the possible occurrence of the moding phenomenon.
    • PCT No.PCT / JP91 / 00891 Sec。 371日期1982年3月20日 102(e)1992年3月20日PCT PCT 1992年7月2日PCT公布。 第WO92 / 02110号公报 日期:1992年2月6日。高频加热装置包括用于将商用电源等的电力转换为高频电力的功率转换器,具有高压绕组的升压变压器和 低压绕组,接收高压和低压输出的磁控管,与磁控管的灯丝串联或并联连接的谐振电路以及控制电路。 控制电路控制功率转换器,使得功率转换器的工作频率与激活功率转换器时的谐振电路的谐振频率大致一致,从而实现磁控管的振荡操作的快速启动,同时抑制 在激活时发生高电压,以防止可能发生的调制现象。
    • 5. 发明授权
    • High frequency heating apparatus utilizing an inverter power supply
    • 利用逆变器电源的高频加热装置
    • US5288961A
    • 1994-02-22
    • US858525
    • 1992-03-27
    • Makoto ShibuyaNaoyoshi MaeharaDaisuke BessyoYuji NakabayashiTakahiro MatsumotoShiro Takeshita
    • Makoto ShibuyaNaoyoshi MaeharaDaisuke BessyoYuji NakabayashiTakahiro MatsumotoShiro Takeshita
    • H05B6/64H05B6/66H05B6/80
    • H05B6/645H05B6/64
    • A high frequency heating arrangement includes a power converting unit with one or more semiconductor devices which dissipates a slight heat loss. A magnetron receives an output from the power converting unit and supplies electromagnetic waves to a heating chamber. The magnetron dissipates a heat loss that is relatively larger than that of the power converting unit. A cooling fan has a motor which dissipates a heat loss which is relatively smaller than that of the power converting unit. The cooling fan is for cooling the power converting unit and the magnetron. A case is provided in which at least the power converting unit and the magnetron are housed and which is made of an electricity-conductive material. A cooling air passage, along which the motor and the case are arranged, and through which air flows from said cooling fan is provided. Air sent from the cooling fan first cools the motor, then cools at least a portion of the power converting unit, and finally cools the magnetron.
    • 高频加热装置包括具有一个或多个半导体器件的功率转换单元,其消散轻微的热损失。 磁控管接收来自功率转换单元的输出并向加热室提供电磁波。 磁控管消耗比功率转换单元更大的热损失。 冷却风扇具有消耗相对于功率转换单元的热损失的热损失的电动机。 冷却风扇用于冷却功率转换单元和磁控管。 提供了至少容纳电力转换单元和磁控管并且由导电材料制成的壳体。 设置有电机和壳体布置的冷却空气通道,并且空气从所述冷却风扇流过。 从冷却风扇送出的空气首先冷却电机,然后冷却至少一部分电力转换单元,最后冷却磁控管。