1、煤氣灶點火方(fang)式

煤(mei)氣灶的(de)點(dian)(dian)(dian)火(huo)(huo)方(fang)式(shi)(shi)主要有電(dian)子脈沖(chong)點(dian)(dian)(dian)火(huo)(huo)和壓電(dian)陶瓷點(dian)(dian)(dian)火(huo)(huo)兩(liang)種，嵌入式(shi)(shi)灶多采(cai)用電(dian)子脈沖(chong)點(dian)(dian)(dian)火(huo)(huo)方(fang)式(shi)(shi)，到某個位(wei)置就點(dian)(dian)(dian)著(zhu)火(huo)(huo)了，其點(dian)(dian)(dian)火(huo)(huo)命中(zhong)率高，一(yi)般是100%，但這種方(fang)式(shi)(shi)需(xu)要換電(dian)池。而臺式(shi)(shi)灶多采(cai)用壓電(dian)陶瓷點(dian)(dian)(dian)火(huo)(huo)方(fang)式(shi)(shi)，其點(dian)(dian)(dian)火(huo)(huo)的(de)成功率受(shou)環境(jing)濕度影(ying)響較大，點(dian)(dian)(dian)火(huo)(huo)的(de)時(shi)候需(xu)要按(an)住開關(guan)才能打著(zhu)火(huo)(huo)。

2、熄火方式

煤氣灶的安(an)全使(shi)用需對其(qi)安(an)裝熄火保護裝置，目(mu)前常用的熄火保護方式(shi)主(zhu)要有熱敏式(shi)、熱電式(shi)和(he)光電式(shi)三(san)種。

熱敏式又稱雙金(jin)(jin)(jin)屬(shu)(shu)片式，它利用雙金(jin)(jin)(jin)屬(shu)(shu)片在溫(wen)度(du)作(zuo)(zuo)用下(xia)(xia)膨(peng)脹(zhang)彎(wan)(wan)(wan)曲(qu)的特性將雙金(jin)(jin)(jin)屬(shu)(shu)片作(zuo)(zuo)為安全(quan)保護裝(zhuang)置的傳(chuan)感器，在溫(wen)度(du)的作(zuo)(zuo)用下(xia)(xia)，膨(peng)脹(zhang)系數(shu)大的金(jin)(jin)(jin)屬(shu)(shu)一面(mian)會向(xiang)膨(peng)脹(zhang)系數(shu)小的金(jin)(jin)(jin)屬(shu)(shu)一面(mian)彎(wan)(wan)(wan)曲(qu)，當失去溫(wen)度(du)時，原已膨(peng)脹(zhang)彎(wan)(wan)(wan)曲(qu)的金(jin)(jin)(jin)屬(shu)(shu)又會慢慢恢復(fu)到原。