一、感應水龍頭電磁閥工作原理
感應水龍頭由紅外發射電路、紅外接收放大電路,控制電路、電磁閥、電(dian)(dian)(dian)(dian)源(yuan)組成。目前市面上主要有AC交流工(gong)作和(he)DC直(zhi)流工(gong)作兩種(zhong)規格的電(dian)(dian)(dian)(dian)源(yuan)裝置(zhi)。整個(ge)工(gong)作過程就是:AC 220V經(jing)變壓(ya)器降壓(ya),輸(shu)出(chu)AC 6V,再(zai)(zai)由整流、濾波(bo)、穩壓(ya),得到DC 6V供給控(kong)制(zhi)電(dian)(dian)(dian)(dian)路(lu)(lu)工(gong)作;DC 6V直(zhi)接(jie)由4節干電(dian)(dian)(dian)(dian)池(chi)組成電(dian)(dian)(dian)(dian)池(chi)盒來直(zhi)接(jie)供電(dian)(dian)(dian)(dian)工(gong)作。然后由紅外(wai)發射電(dian)(dian)(dian)(dian)路(lu)(lu)發射紅外(wai)線,經(jing)過紅外(wai)接(jie)收電(dian)(dian)(dian)(dian)路(lu)(lu)接(jie)收,再(zai)(zai)經(jing)過放大選頻,最(zui)后由控(kong)制(zhi)電(dian)(dian)(dian)(dian)路(lu)(lu)控(kong)制(zhi)電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)的開(kai)啟,從而控(kong)制(zhi)紅外(wai)感應(ying)龍頭的開(kai)啟和(he)關(guan)閉的一個(ge)過程。那么感應(ying)水龍頭電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)的原理是什么呢(ni)?
1、電磁感應原理
它是(shi)將人視作導體(ti),處(chu)于50Hz交流電(dian)(dian)形成的(de)磁(ci)場中時(shi),便會發生電(dian)(dian)磁(ci)感(gan)應現象,于是(shi)人體(ti)產(chan)生感(gan)應電(dian)(dian)流,反(fan)作用于原電(dian)(dian)磁(ci)場,從而改變原電(dian)(dian)流。當這(zhe)一改變被電(dian)(dian)路接收到以后,就(jiu)會通(tong)過電(dian)(dian)磁(ci)繼(ji)電(dian)(dian)器(qi)放放水。
2、紅外線接收
人體體溫為(wei)37度,高于室溫時,會向外輻射(she)紅外線,接收到這個輻射(she)的感應器會使(shi)水(shui)龍頭流水(shui)。
3、紅外線反射
紅外(wai)發射管(guan)向水(shui)流方向發射出一束紅外(wai)線,當(dang)手伸向水(shui)龍(long)頭(tou)時(shi),紅外(wai)線被手反(fan)射,紅外(wai)接(jie)收管(guan)接(jie)收到紅外(wai)光,并將該信(xin)號送入內部電(dian)路,經(jing)內部電(dian)路處理后,接(jie)通電(dian)磁水(shui)龍(long)頭(tou)的電(dian)源(yuan),水(shui)龍(long)頭(tou)打開;當(dang)手離開水(shui)龍(long)頭(tou)時(shi),紅外(wai)線不再被反(fan)射,電(dian)磁水(shui)龍(long)頭(tou)電(dian)源(yuan)被關閉(bi),停止(zhi)供水(shui)。
二、感應水龍頭因電磁閥引起的故障
電磁閥是感應水龍頭核心主(zhu)件之(zhi)一(yi),電(dian)磁閥品質決定感應水(shui)龍頭的(de)質量(liang),有效控制電(dian)磁閥合(he)格率可降低感應水(shui)龍頭出(chu)廠故(gu)障(zhang)。電(dian)磁閥結構(gou)主(zhu)要分為兩大類:電(dian)磁閥線圈和(he)(he)閥座(含動鐵芯、彈簧、閥蓋、膜片)。目前感應水(shui)龍頭因(yin)電(dian)磁閥引起的(de)故(gu)障(zhang)主(zhu)要現象為:不出(chu)水(shui)、出(chu)水(shui)量(liang)小(xiao)和(he)(he)關不住水(shui)。
電磁閥關不住水、出水量小和關不住水的解決方法是:檢查電磁閥進水端過濾是否有雜質睹塞,如果無,拆開電磁閥內部,取出電磁閥線圈部分含動鐵芯,通過連接感應部分進行感應,如果鐵芯能正常吸合及復位,可確定感應水龍頭電磁閥線圈無質量問題,這樣可以檢查內部部件是否有異常,如膜片是否老化(更換新膜片)、膜片進水孔是否有異物(清洗);將所有部件進行清洗,再原樣裝回。注意裝回電磁閥時檢查電磁閥閥座的黑色O型(xing)墊圈是否還在,必須(xu)確定有,否則(ze)安(an)裝后將(jiang)產生漏水(shui)現象。
目前市場感應水龍頭電磁閥主要電壓為6V、12V、3V。6V和3V主要為(wei)脈(mo)沖式電(dian)(dian)磁閥(fa),需要電(dian)(dian)路(lu)給脈(mo)沖才能工作(zuo),電(dian)(dian)磁閥(fa)的脈(mo)寬不同需要匹(pi)配合適的電(dian)(dian)路(lu)。12V電(dian)磁閥(fa)是(shi)電(dian)路給一定的電(dian)壓工作,它與其它電(dian)磁閥(fa)不同的是(shi),它如(ru)終處于常閉狀態,所(suo)以(yi)一般采(cai)用(yong)12V電磁閥的感(gan)應水(shui)龍(long)頭關不住水(shui),多為電磁閥內部有雜質;而6V和(he)3V電磁(ci)閥雖然出廠時是常(chang)閉,由于運輸或遇(yu)到一定的碰擊(ji),鐵芯將容(rong)易(yi)被線圈內的磁(ci)鐵吸合(he),電磁(ci)閥呈開啟狀態,這樣安裝后的感應水(shui)龍頭(tou),接水(shui)后水(shui)龍頭(tou)容(rong)易(yi)出現關不住水(shui),往往以為是產品質量(liang)有(you)問(wen)題。