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电饭锅原理
更新时间: 2021-03-02 18:30:03  

1、在煮饭时,按下煮饭开关时,靠磁钢的吸力带动杠杆开关使电源触点保持接通。

2、当煮米饭时,锅底的温度不断升高,永久磁环的吸力随温度的升高而减弱。

3、当内锅里的水被蒸发掉,锅底的温度达到103摄氏度时,磁环的吸力小于其上的弹簧的弹力,限温器被弹簧顶下,带动杠杆开关,切断电源。

关键词: 饭锅 原理

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