電加熱器是(shi)專(zhuan)門將電能(neng)轉換為熱能(neng)的電器(qi)元件(jian)，結構簡(jian)單、使(shi)用(yong)(yong)(yong)方便(bian)、機(ji)械強(qiang)度高(gao)(gao)、熱效率高(gao)(gao)、加(jia)(jia)熱速度快(kuai)、可(ke)靠、安裝簡(jian)便(bian)、控制(zhi)精度高(gao)(gao)、使(shi)用(yong)(yong)(yong)壽命(ming)長（一般設計使(shi)用(yong)(yong)(yong)壽命(ming)為10000個小時(shi)）等特點(dian)。廣泛適用(yong)(yong)(yong)于(yu)各種酸堿(jian)槽、水(shui)槽、油(you)槽、空氣加(jia)(jia)熱爐、干燥箱、熱壓模等工況的加(jia)(jia)熱。

電加熱器是一種消耗(hao)電(dian)(dian)能轉(zhuan)換為熱(re)(re)(re)(re)(re)(re)能，來對需加(jia)(jia)熱(re)(re)(re)(re)(re)(re)物(wu)料(liao)進行(xing)加(jia)(jia)熱(re)(re)(re)(re)(re)(re)。在工作(zuo)中(zhong)低溫(wen)流體介質通過管道(dao)在壓力作(zuo)用下進入(ru)其輸(shu)入(ru)口，沿(yan)著電(dian)(dian)加(jia)(jia)熱(re)(re)(re)(re)(re)(re)容器(qi)(qi)內(nei)(nei)部特定換熱(re)(re)(re)(re)(re)(re)流道(dao)，運用流體熱(re)(re)(re)(re)(re)(re)力學原理設計的路徑，帶走電(dian)(dian)熱(re)(re)(re)(re)(re)(re)元(yuan)件(jian)(jian)工作(zuo)中(zhong)所產生的高(gao)溫(wen)熱(re)(re)(re)(re)(re)(re)能量，使(shi)被加(jia)(jia)熱(re)(re)(re)(re)(re)(re)介質溫(wen)度(du)升高(gao)，電(dian)(dian)加(jia)(jia)熱(re)(re)(re)(re)(re)(re)器(qi)(qi)出(chu)(chu)口得(de)到工藝要(yao)求的高(gao)溫(wen)介質。電(dian)(dian)加(jia)(jia)熱(re)(re)(re)(re)(re)(re)器(qi)(qi)內(nei)(nei)部控制系統依據輸(shu)出(chu)(chu)口的溫(wen)度(du)傳感器(qi)(qi)信號自(zi)動(dong)調(diao)節電(dian)(dian)加(jia)(jia)熱(re)(re)(re)(re)(re)(re)器(qi)(qi)輸(shu)出(chu)(chu)功率，使(shi)輸(shu)出(chu)(chu)口的介質溫(wen)度(du)均(jun)勻(yun);當發(fa)熱(re)(re)(re)(re)(re)(re)元(yuan)件(jian)(jian)超溫(wen)時，發(fa)熱(re)(re)(re)(re)(re)(re)元(yuan)件(jian)(jian)的獨(du)立的過熱(re)(re)(re)(re)(re)(re)保護裝置立即切斷加(jia)(jia)熱(re)(re)(re)(re)(re)(re)電(dian)(dian)源，避免加(jia)(jia)熱(re)(re)(re)(re)(re)(re)物(wu)料(liao)超溫(wen)引起(qi)結焦、變(bian)質、碳化，嚴重時導致發(fa)熱(re)(re)(re)(re)(re)(re)元(yuan)件(jian)(jian)燒壞，有效延長(chang)電(dian)(dian)加(jia)(jia)熱(re)(re)(re)(re)(re)(re)器(qi)(qi)使(shi)用壽命。