燃(ran)氣熱水器點火原(yuan)理

家(jia)(jia)用(yong)燃氣(qi)(qi)熱(re)水(shui)器(qi)使用(yong)方(fang)便,現(xian)在已經進入千家(jia)(jia)萬戶。燃氣(qi)(qi)熱(re)水(shui)氣(qi)(qi)的(de)(de)基(ji)本原(yuan)理是利(li)用(yong)水(shui)流流過細小的(de)(de)管(guan)道，在管(guan)道下面(mian)有(you)噴火(huo)嘴，用(yong)來加熱(re)自來水(shui)，由于加熱(re)的(de)(de)面(mian)積大，細小，所以水(shui)很快被煮成高(gao)溫的(de)(de)水(shui)。

燃(ran)氣(qi)熱水器(qi)點(dian)(dian)(dian)火(huo)(huo)(huo)(huo)(huo)機構由點(dian)(dian)(dian)火(huo)(huo)(huo)(huo)(huo)器(qi)、點(dian)(dian)(dian)火(huo)(huo)(huo)(huo)(huo)檢測(ce)、電(dian)(dian)磁閥(fa)、水壓開關等組成，當(dang)打開水龍(long)頭(tou)時，水流流過管道，在水閥(fa)的壓力下，水壓開關被頂開，電(dian)(dian)池經電(dian)(dian)源(yuan)開關、水壓開關加到點(dian)(dian)(dian)火(huo)(huo)(huo)(huo)(huo)器(qi)，點(dian)(dian)(dian)火(huo)(huo)(huo)(huo)(huo)器(qi)開始點(dian)(dian)(dian)火(huo)(huo)(huo)(huo)(huo)，同時煤氣(qi)電(dian)(dian)磁閥(fa)打開，煤氣(qi)從噴火(huo)(huo)(huo)(huo)(huo)嘴液出(chu)，遇(yu)到點(dian)(dian)(dian)火(huo)(huo)(huo)(huo)(huo)器(qi)的高壓電(dian)(dian)火(huo)(huo)(huo)(huo)(huo)花開始燃(ran)燒，點(dian)(dian)(dian)火(huo)(huo)(huo)(huo)(huo)檢測(ce)電(dian)(dian)路檢測(ce)到火(huo)(huo)(huo)(huo)(huo)苗后，才停止點(dian)(dian)(dian)火(huo)(huo)(huo)(huo)(huo)。

熱水(shui)(shui)器常(chang)見(jian)的故障(zhang)就是(shi)(shi)(shi)(shi)(shi)打不(bu)著火(huo)(huo)了(le)，遇到(dao)(dao)這(zhe)個(ge)(ge)情況(kuang)先(xian)檢查(cha)電(dian)(dian)(dian)(dian)池(chi)是(shi)(shi)(shi)(shi)(shi)否(fou)用完，排除電(dian)(dian)(dian)(dian)池(chi)以及(ji)水(shui)(shui)壓不(bu)足的問題(ti)后，可(ke)以做以下判斷：A打開(kai)(kai)水(shui)(shui)龍頭(tou)，有(you)(you)(you)噠噠的點(dian)火(huo)(huo)聲，但是(shi)(shi)(shi)(shi)(shi)點(dian)不(bu)著火(huo)(huo)，首先(xian)檢查(cha)煤氣供應(ying)(ying)是(shi)(shi)(shi)(shi)(shi)否(fou)正(zheng)(zheng)常(chang)，如果(guo)(guo)(guo)正(zheng)(zheng)常(chang)，在打開(kai)(kai)時是(shi)(shi)(shi)(shi)(shi)否(fou)有(you)(you)(you)聽(ting)到(dao)(dao)電(dian)(dian)(dian)(dian)磁(ci)閥(fa)(fa)吸(xi)合的聲音，如果(guo)(guo)(guo)沒(mei)(mei)有(you)(you)(you)，應(ying)(ying)該檢查(cha)電(dian)(dian)(dian)(dian)磁(ci)閥(fa)(fa)相關(guan)電(dian)(dian)(dian)(dian)路(lu)，一般都是(shi)(shi)(shi)(shi)(shi)點(dian)火(huo)(huo)器內(nei)部(bu)電(dian)(dian)(dian)(dian)磁(ci)閥(fa)(fa)電(dian)(dian)(dian)(dian)路(lu)損壞(huai)，否(fou)則應(ying)(ying)該更換電(dian)(dian)(dian)(dian)磁(ci)閥(fa)(fa)。如果(guo)(guo)(guo)吸(xi)合正(zheng)(zheng)常(chang)，應(ying)(ying)該檢查(cha)煤氣通路(lu)。B打開(kai)(kai)水(shui)(shui)龍頭(tou)沒(mei)(mei)有(you)(you)(you)反(fan)應(ying)(ying)，這(zhe)時拆開(kai)(kai)熱水(shui)(shui)器，再打開(kai)(kai)水(shui)(shui)龍頭(tou)，看看水(shui)(shui)壓開(kai)(kai)關(guan)有(you)(you)(you)沒(mei)(mei)被頂(ding)開(kai)(kai)，如果(guo)(guo)(guo)沒(mei)(mei)有(you)(you)(you)，應(ying)(ying)該檢查(cha)水(shui)(shui)壓閥(fa)(fa)，如果(guo)(guo)(guo)有(you)(you)(you)，可(ke)短路(lu)電(dian)(dian)(dian)(dian)源開(kai)(kai)關(guan)，如果(guo)(guo)(guo)此時點(dian)火(huo)(huo)正(zheng)(zheng)常(chang)，說明(ming)是(shi)(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)源開(kai)(kai)關(guan)的問題(ti)，本人(ren)的實踐(jian)證(zheng)明(ming)，這(zhe)種情況(kuang)占大(da)多(duo)數！如果(guo)(guo)(guo)電(dian)(dian)(dian)(dian)源開(kai)(kai)關(guan)沒(mei)(mei)問題(ti)，短路(lu)水(shui)(shui)壓開(kai)(kai)關(guan)，如果(guo)(guo)(guo)此時點(dian)火(huo)(huo)正(zheng)(zheng)常(chang)，說明(ming)是(shi)(shi)(shi)(shi)(shi)水(shui)(shui)壓開(kai)(kai)關(guan)問題(ti)，實踐(jian)證(zheng)明(ming)這(zhe)個(ge)(ge)情況(kuang)也是(shi)(shi)(shi)(shi)(shi)很常(chang)見(jian)的。如果(guo)(guo)(guo)以上兩個(ge)(ge)開(kai)(kai)關(guan)都正(zheng)(zheng)常(chang)，檢查(cha)供電(dian)(dian)(dian)(dian)線路(lu)有(you)(you)(you)沒(mei)(mei)接觸不(bu)良，線路(lu)有(you)(you)(you)沒(mei)(mei)斷裂(lie)，如果(guo)(guo)(guo)都正(zheng)(zheng)常(chang)就是(shi)(shi)(shi)(shi)(shi)點(dian)火(huo)(huo)器本身(shen)問題(ti)，應(ying)(ying)該更換點(dian)火(huo)(huo)器！

以(yi)上(shang)是水(shui)氣(qi)聯動裝置熱水(shui)器的(de)點火原理，另(ling)一種是采用霍(huo)爾(er)傳(chuan)感(gan)器感(gan)知水(shui)流(liu),由微控制器根據(ju)傳(chuan)感(gan)的(de)信號(hao)給出點火信號(hao),以(yi)此系統替代(dai)傳(chuan)統的(de)水(shui)氣(qi)聯動閥。