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YQ510-50/B1 CIK-PARAMETER
620 SERIES IGNITER
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詳細(xì)說(shuō)明
熱電式熄火安全保護(hù)裝置(不含閥體)
(工作原理)
性能簡(jiǎn)介: 在使用燃?xì)饩?,熱水器意外發(fā)生熄火時(shí)、或正常燃燒過(guò)程中被吹熄滅,燃?xì)庀ɑ鸢踩Wo(hù)裝置將自動(dòng)切斷氣源,防止燃?xì)庑孤抖斐芍卸净虮ㄊ鹿拾l(fā)生。
熱電式熄火安全保護(hù)裝置工作原理示意圖
燃?xì)庀ɑ鸨Wo(hù)裝置由熱電偶與電磁閥兩部分組成,如圖1所示,當(dāng)熱電偶頂端(熱電偶感應(yīng)頭)被火焰加熱時(shí),熱電偶感應(yīng)頭受熱,從而發(fā)生熱電動(dòng)勢(shì),當(dāng)達(dá)到足夠熱電動(dòng)勢(shì)時(shí)驅(qū)動(dòng)電磁閥吸合,當(dāng)火焰熄滅時(shí)隨著熱電偶感應(yīng)頭部溫度的下降,熱電勢(shì)逐步消失,致使電磁力而隨之消失,電磁閥在彈力的作用下切斷氣源。
圖1 熄火保護(hù)裝置安裝示意圖
圖2 熱電偶加熱與冷卻曲線特性
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