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    • 1. 发明授权
    • Microwave oven
    • 微波炉
    • US4245143A
    • 1981-01-13
    • US33263
    • 1979-04-25
    • Yoshio MiuraYukio FukuiKatunobu Takeda
    • Yoshio MiuraYukio FukuiKatunobu Takeda
    • H05B6/68H05B6/80H05B9/06
    • H05B6/6455
    • A high frequency heating apparatus is provided with a hood so constructed as to limit infrared ray energy reaching an infrared ray detecting element for detecting infrared rays radiated from an object to be heated within a heating chamber. In heating apparatus, the influence by the reflection of infrared rays is minimized by making the absorption factor approach to about "1" with blackening the inner surface of the hood. Also, the rotation of a chopper to detect infrared rays radiated from the object through chopping operation is detected by a mechanical switch. The output signal from the infrared ray detecting element is synchronous-rectified in synchronism with the switching operation of the mechanical switch.
    • 高频加热装置设置有罩,其被构造成限制到达红外线检测元件的红外线能量,用于检测在加热室内从被加热物体辐射的红外线。 在加热装置中,通过使罩的内表面变黑而使吸收系数接近约“1”,由此红外线反射的影响被最小化。 此外,通过斩波操作来检测通过斩波操作从物体辐射的红外线的斩波器的旋转由机械开关检测。 来自红外线检测元件的输出信号与机械开关的切换操作同步地进行同步整流。