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WENKONGKAIGUANTONGCHANGDOUSHISHIYONG[SHUANGJINSHUPIANKONGWENQI]。SHIYIZHONGGONGYESHANGYINGYONGFEICHANGGUANGFANDE,JIANDAN、KEKAODEWENKONGZHUANGZHI。JIEGOU、YUANLISHIZHEIYANGDE:WENKONGKAIGUANYOUDONG、JINGLIANGGECHUDIAN,DONGCHUDIANSHIYITIAOJIANDUANMAOYOUCHUDIANDESHEXINGJINSHUPIAN。QINGDAJIAZHUYI:TABUSHIDANCHUNDETONGPIAN,GENGBUSHISHENME“JIYIJINSHU”。SHIYIKUAIYOULIANGZHONGREPENGZHANGXISHUCHABIEHENDADEJINSHUDIEHEERCHENGDE“SHUANGJINSHUPIAN”。YIDANSHOURE,SHUANGJINSHUPIANYINWEILIANGMIANPENGZHANGXISHUBUTONG,ERXIANGPENGZHANGXISHUXIAODEJINSHUYIMIANNAOQU。JINGZHENGDING,YU100SHESHIDUSHI,NAOQUCHENGDUSHICHUDIANFENLI,QIEDUANDIANYUAN。CHUDIANDUANKAISHIHUICHANSHENGHUOHUA,SHICHUDIANSHAOSHI,GAODANGDEKAIGUANCHUDIANDOUSHIYONGYINWUHEJIN。

CONGZHEILIKEYIKANCHU:SHUIKAIHOUZHUOREZHENGQINENGBUNENGZHUNSHI、ZHUNQUEDITONGGUOXIAOKONG,DAODAWENKONGKAIGUANCHU,YESHIKONGZHISHIFOUZHUNQUEDEZHONGYAOYINSU。YINCI,SHAOSHUISHIYIDINGYAOGAIHAOSHUIHUDEGAIZI,BUYAORANGZHENGQICONGFENGXIZHONG“TAODIAO”!

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电热水壶烧开水自动断电的工作原理

再来聊聊蒸汽开关的工作原理,此开关并不是一个温度计,也不是NTC(热敏电阻安徽快3),其感应温度的地方是一块双金属片,它由两种不同热膨胀系数的金属材料焊接在一起,表面看起来就像只有一片金属,就是这块金属起作用,当受热时,热膨胀系数大的那一块金属片受热后热胀冷缩非常明显,而热膨胀系数小的那块金属片则热胀冷缩不明显,这样就会导致这块双金属片向热膨胀系数小的一侧发生翘曲变形,从而触发这个开关动作而切断电源。

以上就是传统机械式电热水壶的工作原理,而电子式电热水壶其控温方式则有很大不同,也比传统机械式电热水壶控温更灵敏,其感应温度的元件就是NTC,也叫热敏电阻,热敏电阻的电阻值,随着温度的变化而变化,正是利用这一特点制成热敏元件,然后通过信号线反馈给电路板MCU,就可以精确地控制电热水壶的通断电。

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