一、電子膨脹閥控制原理是什么
電(dian)(dian)(dian)(dian)子膨(peng)脹閥(fa)(fa)是(shi)一種電(dian)(dian)(dian)(dian)子控(kong)制(zhi)的(de)節流(liu)元件,它可以按照預(yu)設程序調節蒸發器供液量,目前電(dian)(dian)(dian)(dian)子膨(peng)脹閥(fa)(fa)主(zhu)要有(you)電(dian)(dian)(dian)(dian)磁(ci)式(shi)(shi)膨(peng)脹閥(fa)(fa)和電(dian)(dian)(dian)(dian)動(dong)式(shi)(shi)膨(peng)脹閥(fa)(fa)兩種,兩者的(de)工作(zuo)原理有(you)些不同:1、電(dian)(dian)(dian)(dian)磁(ci)式(shi)(shi)電(dian)(dian)(dian)(dian)子膨(peng)脹閥(fa)(fa)內部具(ju)有(you)電(dian)(dian)(dian)(dian)磁(ci)線(xian)圈(quan),通(tong)(tong)過電(dian)(dian)(dian)(dian)磁(ci)線(xian)圈(quan)作(zuo)為媒介(jie)來(lai)控(kong)制(zhi)系統流(liu)量。在(zai)電(dian)(dian)(dian)(dian)磁(ci)線(xian)圈(quan)通(tong)(tong)電(dian)(dian)(dian)(dian)之前,閥(fa)(fa)針處于開(kai)啟狀態,在(zai)電(dian)(dian)(dian)(dian)磁(ci)線(xian)圈(quan)通(tong)(tong)電(dian)(dian)(dian)(dian)之后,閥(fa)(fa)針的(de)開(kai)啟程度由(you)電(dian)(dian)(dian)(dian)磁(ci)線(xian)圈(quan)上的(de)電(dian)(dian)(dian)(dian)壓(ya)來(lai)控(kong)制(zhi),由(you)此,電(dian)(dian)(dian)(dian)磁(ci)線(xian)圈(quan)的(de)電(dian)(dian)(dian)(dian)壓(ya)就控(kong)制(zhi)了膨(peng)脹閥(fa)(fa)的(de)流(liu)量。2、電(dian)(dian)(dian)(dian)動(dong)式(shi)(shi)電(dian)(dian)(dian)(dian)子膨(peng)脹閥(fa)(fa)就是(shi)利用步進(jin)(jin)電(dian)(dian)(dian)(dian)機驅動(dong)的(de),該裝置通(tong)(tong)過給步進(jin)(jin)電(dian)(dian)(dian)(dian)機提供的(de)邏輯數字信號來(lai)控(kong)制(zhi)進(jin)(jin)內部的(de)螺紋(wen)驅動(dong)閥(fa)(fa)針運動(dong),由(you)此實現閥(fa)(fa)門流(liu)量與面積(ji)的(de)控(kong)制(zhi)。
二、電子膨脹閥的作用是什么
電(dian)子(zi)膨(peng)(peng)脹閥(fa)(fa)(fa)廣泛應用(yong)于空調(diao)、冷(leng)(leng)(leng)庫、商(shang)業制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)等領(ling)域,應用(yong)最多的(de)(de)(de)(de)(de)(de)(de)就是(shi)空調(diao)領(ling)域,空調(diao)電(dian)子(zi)膨(peng)(peng)脹閥(fa)(fa)(fa)是(shi)空調(diao)系(xi)(xi)統(tong)中的(de)(de)(de)(de)(de)(de)(de)一個重要組件,其主要作用(yong)是(shi)控制(zhi)(zhi)(zhi)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)進入室內(nei)(nei)蒸(zheng)發(fa)器(qi)的(de)(de)(de)(de)(de)(de)(de)流(liu)(liu)(liu)量,從(cong)(cong)而(er)實現(xian)空調(diao)系(xi)(xi)統(tong)的(de)(de)(de)(de)(de)(de)(de)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)效(xiao)(xiao)果(guo)(guo),具體來說,作用(yong)主要有以(yi)(yi)下幾點:1、控制(zhi)(zhi)(zhi)空調(diao)系(xi)(xi)統(tong)的(de)(de)(de)(de)(de)(de)(de)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)效(xiao)(xiao)果(guo)(guo):電(dian)子(zi)膨(peng)(peng)脹閥(fa)(fa)(fa)可(ke)以(yi)(yi)根據(ju)室內(nei)(nei)溫(wen)(wen)度(du)的(de)(de)(de)(de)(de)(de)(de)變化,自動(dong)調(diao)節(jie)(jie)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)流(liu)(liu)(liu)量,保(bao)持室內(nei)(nei)溫(wen)(wen)度(du)穩定,當(dang)室內(nei)(nei)溫(wen)(wen)度(du)升高(gao)(gao)(gao)時,膨(peng)(peng)脹閥(fa)(fa)(fa)會減少制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)流(liu)(liu)(liu)量,降(jiang)低(di)蒸(zheng)發(fa)器(qi)的(de)(de)(de)(de)(de)(de)(de)溫(wen)(wen)度(du),從(cong)(cong)而(er)降(jiang)低(di)室內(nei)(nei)溫(wen)(wen)度(du);當(dang)室內(nei)(nei)溫(wen)(wen)度(du)下降(jiang)時,膨(peng)(peng)脹閥(fa)(fa)(fa)會增加制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)流(liu)(liu)(liu)量,提(ti)(ti)(ti)高(gao)(gao)(gao)蒸(zheng)發(fa)器(qi)的(de)(de)(de)(de)(de)(de)(de)溫(wen)(wen)度(du),從(cong)(cong)而(er)提(ti)(ti)(ti)高(gao)(gao)(gao)室內(nei)(nei)溫(wen)(wen)度(du)。2、提(ti)(ti)(ti)高(gao)(gao)(gao)空調(diao)系(xi)(xi)統(tong)的(de)(de)(de)(de)(de)(de)(de)效(xiao)(xiao)率:由于電(dian)子(zi)膨(peng)(peng)脹閥(fa)(fa)(fa)能夠根據(ju)室內(nei)(nei)溫(wen)(wen)度(du)變化調(diao)節(jie)(jie)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)流(liu)(liu)(liu)量,使得制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)在蒸(zheng)發(fa)器(qi)內(nei)(nei)的(de)(de)(de)(de)(de)(de)(de)溫(wen)(wen)度(du)和壓力始終保(bao)持在最佳狀態(tai),這樣可(ke)以(yi)(yi)最大限度(du)地(di)提(ti)(ti)(ti)高(gao)(gao)(gao)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)換熱(re)效(xiao)(xiao)果(guo)(guo),提(ti)(ti)(ti)高(gao)(gao)(gao)空調(diao)系(xi)(xi)統(tong)的(de)(de)(de)(de)(de)(de)(de)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)效(xiao)(xiao)率。3、提(ti)(ti)(ti)供更(geng)加精確的(de)(de)(de)(de)(de)(de)(de)控制(zhi)(zhi)(zhi)和調(diao)節(jie)(jie):傳統(tong)的(de)(de)(de)(de)(de)(de)(de)機械膨(peng)(peng)脹閥(fa)(fa)(fa)通常(chang)通過(guo)調(diao)整彈簧或調(diao)節(jie)(jie)裝置(zhi)來控制(zhi)(zhi)(zhi)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)流(liu)(liu)(liu)量,而(er)電(dian)子(zi)膨(peng)(peng)脹閥(fa)(fa)(fa)則可(ke)以(yi)(yi)根據(ju)精準(zhun)的(de)(de)(de)(de)(de)(de)(de)電(dian)子(zi)信號(hao)來調(diao)節(jie)(jie)流(liu)(liu)(liu)量,具有更(geng)高(gao)(gao)(gao)的(de)(de)(de)(de)(de)(de)(de)準(zhun)確性(xing)和穩定性(xing)。
三、電子膨脹閥與毛細管優缺點對比
1、毛細管的優點:(1)毛細管結構簡單,且沒有活動部件,因此其故障率相對較低,有效減少了維修和更換的頻率。(2)毛細管的使用壽命較長,在正常使用情況下,可以穩定運行多年。(3)毛細管的價格比較便宜。2、毛細管的缺點:毛細管的缺點主要是其流量不可調節,無法適應不同的工況需求,同時易受制冷劑壓力波動影響,進而導致空調性能下降。3、電子膨脹閥的優點:(1)電子膨脹閥可以根據室內溫度變化實時調節制冷劑的流量,從而更加精確地控制室內溫度,提供更舒適的使用體驗。(2)電子膨脹閥還具備更廣泛的適應性,能夠適應不同負荷條件下的制冷需求,提供更高效的制冷效果。(3)電子膨脹閥還具有快速響應、低噪音、抗壓力波動等優點。4、電子膨脹閥的缺點:電子膨脹閥的缺點主要就是價格較高,此外,相比毛細管,電子膨脹閥存在著更多機械和電子元件,其故障率相對較高,可能需要更頻繁的維修和更換。總體來說,毛細管在耐用性和價格方面具備優勢,而電子膨脹閥在性能和適應性方面更勝一籌,如果您需要采購電子膨脹閥,可以先來了解一下電子膨脹閥十大品牌。
四、電子膨脹閥怎么測量好壞
如果(guo)(guo)空調(diao)制(zhi)冷(leng)效果(guo)(guo)差,應考慮是(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)是(shi)(shi)(shi)(shi)(shi)電(dian)(dian)子(zi)(zi)膨脹(zhang)(zhang)閥(fa)(fa)(fa)(fa)壞(huai)了,電(dian)(dian)子(zi)(zi)膨脹(zhang)(zhang)閥(fa)(fa)(fa)(fa)的(de)好壞(huai)檢(jian)測方(fang)法是(shi)(shi)(shi)(shi)(shi):正(zheng)(zheng)常的(de)電(dian)(dian)子(zi)(zi)膨脹(zhang)(zhang)閥(fa)(fa)(fa)(fa)在插電(dian)(dian)后有“咯嗒”的(de)響聲。若(ruo)(ruo)沒有響聲,或(huo)在制(zhi)冷(leng)時(shi)膨脹(zhang)(zhang)閥(fa)(fa)(fa)(fa)在壓(ya)(ya)縮機工作后便開(kai)(kai)始結(jie)霜(shuang),則(ze)(ze)應檢(jian)測其線(xian)圈(quan)(quan)及供電(dian)(dian)是(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)正(zheng)(zheng)常(12V脈(mo)沖電(dian)(dian))。若(ruo)(ruo)電(dian)(dian)壓(ya)(ya)正(zheng)(zheng)常,則(ze)(ze)說明電(dian)(dian)腦板(ban)正(zheng)(zheng)常,若(ruo)(ruo)此時(shi)膨脹(zhang)(zhang)閥(fa)(fa)(fa)(fa)內無(wu)聲音,則(ze)(ze)是(shi)(shi)(shi)(shi)(shi)膨脹(zhang)(zhang)閥(fa)(fa)(fa)(fa)不良(liang),這時(shi)先測量電(dian)(dian)子(zi)(zi)膨脹(zhang)(zhang)閥(fa)(fa)(fa)(fa)線(xian)圈(quan)(quan)直(zhi)流電(dian)(dian)阻(zu),若(ruo)(ruo)正(zheng)(zheng)常,則(ze)(ze)可能是(shi)(shi)(shi)(shi)(shi)閥(fa)(fa)(fa)(fa)體內臟堵,可用高壓(ya)(ya)氣體進行(xing)吹洗。另外,在斷(duan)電(dian)(dian)時(shi)電(dian)(dian)子(zi)(zi)膨脹(zhang)(zhang)閥(fa)(fa)(fa)(fa)應復位,這時(shi)可通過(guo)聽聲音或(huo)感覺是(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)振動(dong)來判定閥(fa)(fa)(fa)(fa)針是(shi)(shi)(shi)(shi)(shi)否(fou)(fou)(fou)有問題。在關(guan)機狀態下(xia),閥(fa)(fa)(fa)(fa)芯一般處(chu)在最大開(kai)(kai)度,此時(shi)斷(duan)開(kai)(kai)線(xian)圈(quan)(quan)引線(xian),然(ran)后開(kai)(kai)機運行(xing),如果(guo)(guo)此時(shi)制(zhi)冷(leng)劑無(wu)法通過(guo),可以判定閥(fa)(fa)(fa)(fa)針卡死。正(zheng)(zheng)常情況下(xia),用手摸電(dian)(dian)子(zi)(zi)膨脹(zhang)(zhang)閥(fa)(fa)(fa)(fa)的(de)兩端(duan),進口(kou)處(chu)是(shi)(shi)(shi)(shi)(shi)溫的(de),出口(kou)處(chu)是(shi)(shi)(shi)(shi)(shi)涼(liang)的(de)。