一、電子膨脹閥控制原理是什么
電(dian)(dian)子膨(peng)(peng)脹閥(fa)是一種電(dian)(dian)子控制(zhi)(zhi)的節流元件,它可以按照預設程序調節蒸發器供液量,目前電(dian)(dian)子膨(peng)(peng)脹閥(fa)主要有(you)電(dian)(dian)磁(ci)(ci)式(shi)膨(peng)(peng)脹閥(fa)和電(dian)(dian)動(dong)式(shi)膨(peng)(peng)脹閥(fa)兩種,兩者的工作原理有(you)些(xie)不(bu)同:1、電(dian)(dian)磁(ci)(ci)式(shi)電(dian)(dian)子膨(peng)(peng)脹閥(fa)內部具(ju)有(you)電(dian)(dian)磁(ci)(ci)線(xian)圈,通(tong)過(guo)電(dian)(dian)磁(ci)(ci)線(xian)圈作為媒介來(lai)控制(zhi)(zhi)系統流量。在電(dian)(dian)磁(ci)(ci)線(xian)圈通(tong)電(dian)(dian)之前,閥(fa)針(zhen)處于開(kai)啟狀態,在電(dian)(dian)磁(ci)(ci)線(xian)圈通(tong)電(dian)(dian)之后,閥(fa)針(zhen)的開(kai)啟程度由電(dian)(dian)磁(ci)(ci)線(xian)圈上的電(dian)(dian)壓來(lai)控制(zhi)(zhi),由此,電(dian)(dian)磁(ci)(ci)線(xian)圈的電(dian)(dian)壓就(jiu)控制(zhi)(zhi)了膨(peng)(peng)脹閥(fa)的流量。2、電(dian)(dian)動(dong)式(shi)電(dian)(dian)子膨(peng)(peng)脹閥(fa)就(jiu)是利用步(bu)進(jin)電(dian)(dian)機驅(qu)動(dong)的,該裝置通(tong)過(guo)給步(bu)進(jin)電(dian)(dian)機提供的邏輯數字信號來(lai)控制(zhi)(zhi)進(jin)內部的螺紋驅(qu)動(dong)閥(fa)針(zhen)運動(dong),由此實現閥(fa)門流量與(yu)面(mian)積的控制(zhi)(zhi)。
二、電子膨脹閥的作用是什么
電子(zi)(zi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)廣泛應(ying)用(yong)于(yu)空(kong)(kong)(kong)調(diao)(diao)、冷(leng)(leng)(leng)庫、商業制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)等領域,應(ying)用(yong)最(zui)多的(de)(de)(de)(de)就是(shi)空(kong)(kong)(kong)調(diao)(diao)領域,空(kong)(kong)(kong)調(diao)(diao)電子(zi)(zi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)是(shi)空(kong)(kong)(kong)調(diao)(diao)系(xi)(xi)統中的(de)(de)(de)(de)一個(ge)重要(yao)組件(jian),其主(zhu)要(yao)作用(yong)是(shi)控(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)進入室(shi)(shi)內(nei)(nei)(nei)蒸發器(qi)的(de)(de)(de)(de)流量(liang)(liang),從(cong)而(er)實(shi)現空(kong)(kong)(kong)調(diao)(diao)系(xi)(xi)統的(de)(de)(de)(de)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)效(xiao)果,具體來(lai)說,作用(yong)主(zhu)要(yao)有(you)以下幾(ji)點:1、控(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)空(kong)(kong)(kong)調(diao)(diao)系(xi)(xi)統的(de)(de)(de)(de)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)效(xiao)果:電子(zi)(zi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)可(ke)以根(gen)(gen)據(ju)(ju)室(shi)(shi)內(nei)(nei)(nei)溫(wen)(wen)(wen)度(du)的(de)(de)(de)(de)變化(hua),自(zi)動調(diao)(diao)節(jie)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)的(de)(de)(de)(de)流量(liang)(liang),保持室(shi)(shi)內(nei)(nei)(nei)溫(wen)(wen)(wen)度(du)穩(wen)(wen)定,當(dang)室(shi)(shi)內(nei)(nei)(nei)溫(wen)(wen)(wen)度(du)升高(gao)(gao)(gao)時(shi),膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)會減少制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)的(de)(de)(de)(de)流量(liang)(liang),降(jiang)低(di)蒸發器(qi)的(de)(de)(de)(de)溫(wen)(wen)(wen)度(du),從(cong)而(er)降(jiang)低(di)室(shi)(shi)內(nei)(nei)(nei)溫(wen)(wen)(wen)度(du);當(dang)室(shi)(shi)內(nei)(nei)(nei)溫(wen)(wen)(wen)度(du)下降(jiang)時(shi),膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)會增加制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)的(de)(de)(de)(de)流量(liang)(liang),提高(gao)(gao)(gao)蒸發器(qi)的(de)(de)(de)(de)溫(wen)(wen)(wen)度(du),從(cong)而(er)提高(gao)(gao)(gao)室(shi)(shi)內(nei)(nei)(nei)溫(wen)(wen)(wen)度(du)。2、提高(gao)(gao)(gao)空(kong)(kong)(kong)調(diao)(diao)系(xi)(xi)統的(de)(de)(de)(de)效(xiao)率:由于(yu)電子(zi)(zi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)能夠(gou)根(gen)(gen)據(ju)(ju)室(shi)(shi)內(nei)(nei)(nei)溫(wen)(wen)(wen)度(du)變化(hua)調(diao)(diao)節(jie)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)的(de)(de)(de)(de)流量(liang)(liang),使得制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)在(zai)(zai)蒸發器(qi)內(nei)(nei)(nei)的(de)(de)(de)(de)溫(wen)(wen)(wen)度(du)和(he)壓力(li)始(shi)終保持在(zai)(zai)最(zui)佳狀態,這樣可(ke)以最(zui)大(da)限度(du)地提高(gao)(gao)(gao)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)的(de)(de)(de)(de)換熱效(xiao)果,提高(gao)(gao)(gao)空(kong)(kong)(kong)調(diao)(diao)系(xi)(xi)統的(de)(de)(de)(de)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)效(xiao)率。3、提供更加精確的(de)(de)(de)(de)控(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)和(he)調(diao)(diao)節(jie):傳統的(de)(de)(de)(de)機械膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)通(tong)常通(tong)過調(diao)(diao)整彈(dan)簧或調(diao)(diao)節(jie)裝置來(lai)控(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)劑(ji)的(de)(de)(de)(de)流量(liang)(liang),而(er)電子(zi)(zi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)則可(ke)以根(gen)(gen)據(ju)(ju)精準的(de)(de)(de)(de)電子(zi)(zi)信號(hao)來(lai)調(diao)(diao)節(jie)流量(liang)(liang),具有(you)更高(gao)(gao)(gao)的(de)(de)(de)(de)準確性(xing)和(he)穩(wen)(wen)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(ru)果空調制(zhi)冷(leng)效(xiao)果差(cha),應(ying)考慮是(shi)(shi)(shi)否(fou)是(shi)(shi)(shi)電(dian)(dian)(dian)子(zi)(zi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)(fa)(fa)壞(huai)了,電(dian)(dian)(dian)子(zi)(zi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)(fa)(fa)的好壞(huai)檢(jian)測方法是(shi)(shi)(shi):正(zheng)常(chang)(chang)(chang)的電(dian)(dian)(dian)子(zi)(zi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)(fa)(fa)在(zai)插電(dian)(dian)(dian)后有(you)(you)“咯嗒”的響(xiang)聲(sheng)。若沒(mei)有(you)(you)響(xiang)聲(sheng),或(huo)在(zai)制(zhi)冷(leng)時(shi)(shi)(shi)(shi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)(fa)(fa)在(zai)壓(ya)縮機工(gong)作后便(bian)開(kai)始結霜(shuang),則應(ying)檢(jian)測其線(xian)圈及供(gong)電(dian)(dian)(dian)是(shi)(shi)(shi)否(fou)正(zheng)常(chang)(chang)(chang)(12V脈沖(chong)電(dian)(dian)(dian))。若電(dian)(dian)(dian)壓(ya)正(zheng)常(chang)(chang)(chang),則說(shuo)明(ming)電(dian)(dian)(dian)腦(nao)板正(zheng)常(chang)(chang)(chang),若此時(shi)(shi)(shi)(shi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)(fa)(fa)內無聲(sheng)音,則是(shi)(shi)(shi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)(fa)(fa)不良(liang),這時(shi)(shi)(shi)(shi)先(xian)測量(liang)電(dian)(dian)(dian)子(zi)(zi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)(fa)(fa)線(xian)圈直流(liu)電(dian)(dian)(dian)阻,若正(zheng)常(chang)(chang)(chang),則可(ke)能是(shi)(shi)(shi)閥(fa)(fa)(fa)(fa)(fa)體內臟(zang)堵,可(ke)用(yong)高壓(ya)氣體進行吹洗。另外(wai),在(zai)斷電(dian)(dian)(dian)時(shi)(shi)(shi)(shi)電(dian)(dian)(dian)子(zi)(zi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)(fa)(fa)應(ying)復(fu)位,這時(shi)(shi)(shi)(shi)可(ke)通過(guo)聽聲(sheng)音或(huo)感覺是(shi)(shi)(shi)否(fou)振動來(lai)判定閥(fa)(fa)(fa)(fa)(fa)針(zhen)(zhen)是(shi)(shi)(shi)否(fou)有(you)(you)問題。在(zai)關(guan)機狀態下,閥(fa)(fa)(fa)(fa)(fa)芯一般(ban)處在(zai)最大(da)開(kai)度,此時(shi)(shi)(shi)(shi)斷開(kai)線(xian)圈引線(xian),然后開(kai)機運(yun)行,如(ru)果此時(shi)(shi)(shi)(shi)制(zhi)冷(leng)劑無法通過(guo),可(ke)以(yi)判定閥(fa)(fa)(fa)(fa)(fa)針(zhen)(zhen)卡死。正(zheng)常(chang)(chang)(chang)情況下,用(yong)手摸電(dian)(dian)(dian)子(zi)(zi)膨(peng)(peng)(peng)脹閥(fa)(fa)(fa)(fa)(fa)的兩端(duan),進口處是(shi)(shi)(shi)溫的,出口處是(shi)(shi)(shi)涼的。