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一、為什么干手器能自動開關

自動(dong)開關(guan)是(shi)指(zhi)人(ren)體(ti)紅外(wai)智能感(gan)(gan)(gan)應(ying)開關(guan)，是(shi)一(yi)種當(dang)有(you)人(ren)從紅外(wai)感(gan)(gan)(gan)應(ying)探測區域經過而自動(dong)啟動(dong)的(de)開關(guan)。那么干手器(qi)(qi)(qi)原(yuan)(yuan)理是(shi)什么呢？干手器(qi)(qi)(qi)能自動(dong)開關(guan)是(shi)因(yin)為在干手器(qi)(qi)(qi)內部(bu)，安(an)裝了變(bian)容(rong)式自動(dong)感(gan)(gan)(gan)應(ying)電(dian)(dian)(dian)(dian)(dian)路，由(you)(you)它控制著一(yi)個(ge)電(dian)(dian)(dian)(dian)(dian)橋(qiao)平(ping)(ping)衡(heng)電(dian)(dian)(dian)(dian)(dian)路。電(dian)(dian)(dian)(dian)(dian)橋(qiao)平(ping)(ping)衡(heng)電(dian)(dian)(dian)(dian)(dian)路由(you)(you)四(si)部(bu)分(fen)(fen)組(zu)成，稱為四(si)個(ge)橋(qiao)臂。變(bian)容(rong)式自動(dong)感(gan)(gan)(gan)應(ying)電(dian)(dian)(dian)(dian)(dian)路組(zu)成了其(qi)中的(de)一(yi)個(ge)橋(qiao)臂。它的(de)感(gan)(gan)(gan)應(ying)部(bu)分(fen)(fen)，安(an)裝在干手器(qi)(qi)(qi)的(de)出(chu)(chu)風口(kou)處(chu)。當(dang)濕手在風口(kou)下出(chu)(chu)現時，因(yin)為人(ren)體(ti)是(shi)導體(ti)，也能形(xing)成電(dian)(dian)(dian)(dian)(dian)容(rong)，于是(shi)，使(shi)感(gan)(gan)(gan)應(ying)部(bu)分(fen)(fen)的(de)電(dian)(dian)(dian)(dian)(dian)容(rong)量發(fa)生變(bian)化，立即使(shi)電(dian)(dian)(dian)(dian)(dian)橋(qiao)電(dian)(dian)(dian)(dian)(dian)路中的(de)四(si)個(ge)橋(qiao)臂的(de)量值，從平(ping)(ping)衡(heng)轉向不平(ping)(ping)衡(heng)。原(yuan)(yuan)來在平(ping)(ping)衡(heng)狀態下，橋(qiao)臂中能互(hu)相抵消(xiao)的(de)電(dian)(dian)(dian)(dian)(dian)流(liu)，不再抵消(xiao)，出(chu)(chu)現了一(yi)股(gu)新的(de)電(dian)(dian)(dian)(dian)(dian)流(liu)。它能使(shi)吸鐵繼電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)動(dong)作，接(jie)通風扇和電(dian)(dian)(dian)(dian)(dian)熱(re)器(qi)(qi)(qi)上的(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)，就(jiu)會有(you)風吹(chui)出(chu)(chu)來。

二、干手器安裝高度

干手器的安(an)裝高(gao)度一般是在1.2m左右(you)，離洗手臺(tai)30-40cm遠。如(ru)果安(an)裝在家中就要考慮使用人(ren)群，一般家用型的掛式感受求可(ke)以根據家人(ren)的平(ping)均身高(gao)來安(an)裝，如(ru)果有小孩可(ke)以選擇安(an)裝落地式向(xiang)上的干手器。

三、干手器有輻射嗎

一般(ban)通電的東(dong)西都會(hui)(hui)有電離(li)輻(fu)射的，只是輻(fu)射大(da)小(xiao)的問(wen)題(ti)，干手器也是有輻(fu)射的，不過不用擔心，畢(bi)竟(jing)它(ta)的體量并(bing)不大(da)，并(bing)且你只是使用不到半分鐘，基本不會(hui)(hui)被輻(fu)射所(suo)影響。

四、如何挑選干手器

挑選干手器主要根據自己的需要和環境等情況來決定是選以風為主熱量為輔的風量型的干手器，還是以熱量為主的熱風型干手器。此外，還需要考慮到干手器的外殼材質、重量、顏色、啟動原理、安裝方式、工作噪音、運行功率、干手時風溫等參數。購買的干手器品牌要有質量保(bao)障，以(yi)用(yong)起來舒適(shi)為宜。