一、電子膨脹閥控制原理是什么

電(dian)(dian)(dian)(dian)(dian)(dian)子膨(peng)(peng)脹(zhang)(zhang)閥(fa)是一(yi)種(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)子控(kong)制(zhi)(zhi)的(de)(de)節流元(yuan)件，它(ta)可(ke)以按(an)照(zhao)預設(she)程(cheng)(cheng)序(xu)調節蒸發器供液量(liang)(liang)，目前電(dian)(dian)(dian)(dian)(dian)(dian)子膨(peng)(peng)脹(zhang)(zhang)閥(fa)主要有電(dian)(dian)(dian)(dian)(dian)(dian)磁式(shi)膨(peng)(peng)脹(zhang)(zhang)閥(fa)和電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)式(shi)膨(peng)(peng)脹(zhang)(zhang)閥(fa)兩種(zhong)，兩者的(de)(de)工(gong)作原理(li)有些不同：1、電(dian)(dian)(dian)(dian)(dian)(dian)磁式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)子膨(peng)(peng)脹(zhang)(zhang)閥(fa)內(nei)部具(ju)有電(dian)(dian)(dian)(dian)(dian)(dian)磁線(xian)圈，通過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)磁線(xian)圈作為媒介(jie)來(lai)控(kong)制(zhi)(zhi)系統流量(liang)(liang)。在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)磁線(xian)圈通電(dian)(dian)(dian)(dian)(dian)(dian)之前，閥(fa)針(zhen)處于開(kai)啟狀態，在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)磁線(xian)圈通電(dian)(dian)(dian)(dian)(dian)(dian)之后，閥(fa)針(zhen)的(de)(de)開(kai)啟程(cheng)(cheng)度由(you)(you)電(dian)(dian)(dian)(dian)(dian)(dian)磁線(xian)圈上的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓來(lai)控(kong)制(zhi)(zhi)，由(you)(you)此(ci)，電(dian)(dian)(dian)(dian)(dian)(dian)磁線(xian)圈的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓就(jiu)控(kong)制(zhi)(zhi)了膨(peng)(peng)脹(zhang)(zhang)閥(fa)的(de)(de)流量(liang)(liang)。2、電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)子膨(peng)(peng)脹(zhang)(zhang)閥(fa)就(jiu)是利用步進(jin)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)驅(qu)動(dong)的(de)(de)，該(gai)裝(zhuang)置通過(guo)給(gei)步進(jin)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)提(ti)供的(de)(de)邏輯數字信號(hao)來(lai)控(kong)制(zhi)(zhi)進(jin)內(nei)部的(de)(de)螺紋驅(qu)動(dong)閥(fa)針(zhen)運動(dong)，由(you)(you)此(ci)實現閥(fa)門(men)流量(liang)(liang)與面(mian)積的(de)(de)控(kong)制(zhi)(zhi)。

二、電子膨脹閥的作用是什么

電(dian)子(zi)(zi)膨(peng)(peng)脹(zhang)閥(fa)(fa)(fa)(fa)廣泛(fan)應用(yong)于(yu)空調(diao)(diao)(diao)(diao)、冷(leng)(leng)(leng)庫、商業制(zhi)(zhi)冷(leng)(leng)(leng)等領域，應用(yong)最(zui)多的(de)(de)(de)(de)(de)(de)就是空調(diao)(diao)(diao)(diao)領域，空調(diao)(diao)(diao)(diao)電(dian)子(zi)(zi)膨(peng)(peng)脹(zhang)閥(fa)(fa)(fa)(fa)是空調(diao)(diao)(diao)(diao)系(xi)統中的(de)(de)(de)(de)(de)(de)一個重要(yao)(yao)組件，其主(zhu)要(yao)(yao)作(zuo)用(yong)是控(kong)(kong)制(zhi)(zhi)制(zhi)(zhi)冷(leng)(leng)(leng)劑進(jin)入(ru)室(shi)內(nei)(nei)蒸發(fa)器的(de)(de)(de)(de)(de)(de)流(liu)量(liang)，從而(er)實現空調(diao)(diao)(diao)(diao)系(xi)統的(de)(de)(de)(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)(leng)效果，具(ju)體(ti)來說，作(zuo)用(yong)主(zhu)要(yao)(yao)有(you)以下(xia)幾(ji)點：1、控(kong)(kong)制(zhi)(zhi)空調(diao)(diao)(diao)(diao)系(xi)統的(de)(de)(de)(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)(leng)效果：電(dian)子(zi)(zi)膨(peng)(peng)脹(zhang)閥(fa)(fa)(fa)(fa)可(ke)以根(gen)據室(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)(du)的(de)(de)(de)(de)(de)(de)變(bian)化(hua)，自動調(diao)(diao)(diao)(diao)節(jie)制(zhi)(zhi)冷(leng)(leng)(leng)劑的(de)(de)(de)(de)(de)(de)流(liu)量(liang)，保持室(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)(du)穩(wen)定，當室(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)(du)升高(gao)(gao)時(shi)，膨(peng)(peng)脹(zhang)閥(fa)(fa)(fa)(fa)會減少(shao)制(zhi)(zhi)冷(leng)(leng)(leng)劑的(de)(de)(de)(de)(de)(de)流(liu)量(liang)，降(jiang)(jiang)低蒸發(fa)器的(de)(de)(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)(du)(du)，從而(er)降(jiang)(jiang)低室(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)(du)；當室(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)(du)下(xia)降(jiang)(jiang)時(shi)，膨(peng)(peng)脹(zhang)閥(fa)(fa)(fa)(fa)會增加制(zhi)(zhi)冷(leng)(leng)(leng)劑的(de)(de)(de)(de)(de)(de)流(liu)量(liang)，提高(gao)(gao)蒸發(fa)器的(de)(de)(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)(du)(du)，從而(er)提高(gao)(gao)室(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)(du)。2、提高(gao)(gao)空調(diao)(diao)(diao)(diao)系(xi)統的(de)(de)(de)(de)(de)(de)效率：由(you)于(yu)電(dian)子(zi)(zi)膨(peng)(peng)脹(zhang)閥(fa)(fa)(fa)(fa)能夠根(gen)據室(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)(du)變(bian)化(hua)調(diao)(diao)(diao)(diao)節(jie)制(zhi)(zhi)冷(leng)(leng)(leng)劑的(de)(de)(de)(de)(de)(de)流(liu)量(liang)，使得制(zhi)(zhi)冷(leng)(leng)(leng)劑在蒸發(fa)器內(nei)(nei)的(de)(de)(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)(du)(du)和(he)(he)壓力(li)始終保持在最(zui)佳狀態(tai)，這樣(yang)可(ke)以最(zui)大(da)限度(du)(du)(du)地(di)提高(gao)(gao)制(zhi)(zhi)冷(leng)(leng)(leng)劑的(de)(de)(de)(de)(de)(de)換熱效果，提高(gao)(gao)空調(diao)(diao)(diao)(diao)系(xi)統的(de)(de)(de)(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)(leng)效率。3、提供更加精(jing)確(que)的(de)(de)(de)(de)(de)(de)控(kong)(kong)制(zhi)(zhi)和(he)(he)調(diao)(diao)(diao)(diao)節(jie)：傳統的(de)(de)(de)(de)(de)(de)機械膨(peng)(peng)脹(zhang)閥(fa)(fa)(fa)(fa)通(tong)(tong)常通(tong)(tong)過調(diao)(diao)(diao)(diao)整彈(dan)簧或(huo)調(diao)(diao)(diao)(diao)節(jie)裝置來控(kong)(kong)制(zhi)(zhi)制(zhi)(zhi)冷(leng)(leng)(leng)劑的(de)(de)(de)(de)(de)(de)流(liu)量(liang)，而(er)電(dian)子(zi)(zi)膨(peng)(peng)脹(zhang)閥(fa)(fa)(fa)(fa)則(ze)可(ke)以根(gen)據精(jing)準(zhun)的(de)(de)(de)(de)(de)(de)電(dian)子(zi)(zi)信號來調(diao)(diao)(diao)(diao)節(jie)流(liu)量(liang)，具(ju)有(you)更高(gao)(gao)的(de)(de)(de)(de)(de)(de)準(zhun)確(que)性(xing)和(he)(he)穩(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(guo)(guo)空調制(zhi)冷效果(guo)(guo)差，應考慮是(shi)(shi)否(fou)(fou)是(shi)(shi)電(dian)(dian)(dian)子(zi)膨(peng)(peng)(peng)(peng)脹(zhang)閥(fa)壞了，電(dian)(dian)(dian)子(zi)膨(peng)(peng)(peng)(peng)脹(zhang)閥(fa)的(de)好壞檢(jian)測(ce)(ce)方法是(shi)(shi)：正(zheng)常(chang)(chang)的(de)電(dian)(dian)(dian)子(zi)膨(peng)(peng)(peng)(peng)脹(zhang)閥(fa)在插電(dian)(dian)(dian)后(hou)有“咯嗒”的(de)響聲。若沒有響聲，或在制(zhi)冷時(shi)(shi)膨(peng)(peng)(peng)(peng)脹(zhang)閥(fa)在壓(ya)(ya)縮(suo)機(ji)工(gong)作后(hou)便開(kai)始結霜，則(ze)應檢(jian)測(ce)(ce)其(qi)線(xian)圈(quan)及供(gong)電(dian)(dian)(dian)是(shi)(shi)否(fou)(fou)正(zheng)常(chang)(chang)（12V脈沖電(dian)(dian)(dian)）。若電(dian)(dian)(dian)壓(ya)(ya)正(zheng)常(chang)(chang)，則(ze)說明電(dian)(dian)(dian)腦板正(zheng)常(chang)(chang)，若此(ci)時(shi)(shi)膨(peng)(peng)(peng)(peng)脹(zhang)閥(fa)內無聲音(yin)(yin)，則(ze)是(shi)(shi)膨(peng)(peng)(peng)(peng)脹(zhang)閥(fa)不良，這(zhe)時(shi)(shi)先測(ce)(ce)量電(dian)(dian)(dian)子(zi)膨(peng)(peng)(peng)(peng)脹(zhang)閥(fa)線(xian)圈(quan)直流電(dian)(dian)(dian)阻，若正(zheng)常(chang)(chang)，則(ze)可能是(shi)(shi)閥(fa)體內臟堵(du)，可用高壓(ya)(ya)氣體進行吹洗(xi)。另外，在斷(duan)電(dian)(dian)(dian)時(shi)(shi)電(dian)(dian)(dian)子(zi)膨(peng)(peng)(peng)(peng)脹(zhang)閥(fa)應復位，這(zhe)時(shi)(shi)可通過聽聲音(yin)(yin)或感覺是(shi)(shi)否(fou)(fou)振動來判定閥(fa)針是(shi)(shi)否(fou)(fou)有問題。在關機(ji)狀態下，閥(fa)芯一般處在最(zui)大(da)開(kai)度，此(ci)時(shi)(shi)斷(duan)開(kai)線(xian)圈(quan)引(yin)線(xian)，然后(hou)開(kai)機(ji)運行，如(ru)果(guo)(guo)此(ci)時(shi)(shi)制(zhi)冷劑無法通過，可以(yi)判定閥(fa)針卡死。正(zheng)常(chang)(chang)情況下，用手摸電(dian)(dian)(dian)子(zi)膨(peng)(peng)(peng)(peng)脹(zhang)閥(fa)的(de)兩(liang)端，進口(kou)處是(shi)(shi)溫的(de)，出口(kou)處是(shi)(shi)涼的(de)。