一、電子膨脹閥控制原理是什么

電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)膨(peng)(peng)(peng)脹(zhang)(zhang)閥(fa)(fa)是一種電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)控(kong)(kong)(kong)制(zhi)(zhi)的(de)節流(liu)元件，它可以按照(zhao)預(yu)設程(cheng)序調節蒸發器(qi)供(gong)液(ye)量(liang)，目前電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)膨(peng)(peng)(peng)脹(zhang)(zhang)閥(fa)(fa)主要有(you)電(dian)(dian)(dian)(dian)磁(ci)(ci)式膨(peng)(peng)(peng)脹(zhang)(zhang)閥(fa)(fa)和電(dian)(dian)(dian)(dian)動式膨(peng)(peng)(peng)脹(zhang)(zhang)閥(fa)(fa)兩種，兩者的(de)工作(zuo)原(yuan)理(li)有(you)些不同：1、電(dian)(dian)(dian)(dian)磁(ci)(ci)式電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)膨(peng)(peng)(peng)脹(zhang)(zhang)閥(fa)(fa)內部(bu)具(ju)有(you)電(dian)(dian)(dian)(dian)磁(ci)(ci)線圈(quan)(quan)，通過電(dian)(dian)(dian)(dian)磁(ci)(ci)線圈(quan)(quan)作(zuo)為(wei)媒介來(lai)控(kong)(kong)(kong)制(zhi)(zhi)系統流(liu)量(liang)。在(zai)電(dian)(dian)(dian)(dian)磁(ci)(ci)線圈(quan)(quan)通電(dian)(dian)(dian)(dian)之前，閥(fa)(fa)針處于(yu)開啟(qi)狀態，在(zai)電(dian)(dian)(dian)(dian)磁(ci)(ci)線圈(quan)(quan)通電(dian)(dian)(dian)(dian)之后，閥(fa)(fa)針的(de)開啟(qi)程(cheng)度(du)由(you)電(dian)(dian)(dian)(dian)磁(ci)(ci)線圈(quan)(quan)上的(de)電(dian)(dian)(dian)(dian)壓(ya)來(lai)控(kong)(kong)(kong)制(zhi)(zhi)，由(you)此，電(dian)(dian)(dian)(dian)磁(ci)(ci)線圈(quan)(quan)的(de)電(dian)(dian)(dian)(dian)壓(ya)就(jiu)控(kong)(kong)(kong)制(zhi)(zhi)了膨(peng)(peng)(peng)脹(zhang)(zhang)閥(fa)(fa)的(de)流(liu)量(liang)。2、電(dian)(dian)(dian)(dian)動式電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)膨(peng)(peng)(peng)脹(zhang)(zhang)閥(fa)(fa)就(jiu)是利(li)用步進(jin)電(dian)(dian)(dian)(dian)機(ji)驅動的(de)，該裝置(zhi)通過給步進(jin)電(dian)(dian)(dian)(dian)機(ji)提供(gong)的(de)邏輯數字信號來(lai)控(kong)(kong)(kong)制(zhi)(zhi)進(jin)內部(bu)的(de)螺(luo)紋驅動閥(fa)(fa)針運動，由(you)此實現閥(fa)(fa)門流(liu)量(liang)與面積的(de)控(kong)(kong)(kong)制(zhi)(zhi)。

二、電子膨脹閥的作用是什么

電(dian)(dian)(dian)(dian)子(zi)(zi)膨(peng)脹(zhang)(zhang)(zhang)閥(fa)(fa)(fa)廣泛(fan)應用(yong)(yong)于(yu)空(kong)(kong)調(diao)(diao)、冷(leng)(leng)庫(ku)、商業制(zhi)(zhi)冷(leng)(leng)等領(ling)域(yu)，應用(yong)(yong)最多(duo)的(de)(de)(de)(de)(de)(de)(de)就是空(kong)(kong)調(diao)(diao)領(ling)域(yu)，空(kong)(kong)調(diao)(diao)電(dian)(dian)(dian)(dian)子(zi)(zi)膨(peng)脹(zhang)(zhang)(zhang)閥(fa)(fa)(fa)是空(kong)(kong)調(diao)(diao)系(xi)統(tong)中的(de)(de)(de)(de)(de)(de)(de)一(yi)個重要組件，其(qi)主(zhu)要作用(yong)(yong)是控(kong)制(zhi)(zhi)制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)進入(ru)室(shi)(shi)(shi)內(nei)(nei)蒸(zheng)(zheng)發(fa)器的(de)(de)(de)(de)(de)(de)(de)流量(liang)，從(cong)而(er)實現(xian)空(kong)(kong)調(diao)(diao)系(xi)統(tong)的(de)(de)(de)(de)(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)效果(guo)，具體來說，作用(yong)(yong)主(zhu)要有(you)以(yi)下幾點：1、控(kong)制(zhi)(zhi)空(kong)(kong)調(diao)(diao)系(xi)統(tong)的(de)(de)(de)(de)(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)效果(guo)：電(dian)(dian)(dian)(dian)子(zi)(zi)膨(peng)脹(zhang)(zhang)(zhang)閥(fa)(fa)(fa)可以(yi)根據(ju)室(shi)(shi)(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)的(de)(de)(de)(de)(de)(de)(de)變化(hua)，自動調(diao)(diao)節制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)流量(liang)，保(bao)持(chi)室(shi)(shi)(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)穩定，當室(shi)(shi)(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)升高(gao)時，膨(peng)脹(zhang)(zhang)(zhang)閥(fa)(fa)(fa)會(hui)減(jian)少制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)流量(liang)，降低(di)蒸(zheng)(zheng)發(fa)器的(de)(de)(de)(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)(du)，從(cong)而(er)降低(di)室(shi)(shi)(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)；當室(shi)(shi)(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)下降時，膨(peng)脹(zhang)(zhang)(zhang)閥(fa)(fa)(fa)會(hui)增加制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)流量(liang)，提高(gao)蒸(zheng)(zheng)發(fa)器的(de)(de)(de)(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)(du)，從(cong)而(er)提高(gao)室(shi)(shi)(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)。2、提高(gao)空(kong)(kong)調(diao)(diao)系(xi)統(tong)的(de)(de)(de)(de)(de)(de)(de)效率：由于(yu)電(dian)(dian)(dian)(dian)子(zi)(zi)膨(peng)脹(zhang)(zhang)(zhang)閥(fa)(fa)(fa)能夠根據(ju)室(shi)(shi)(shi)內(nei)(nei)溫(wen)(wen)(wen)(wen)度(du)(du)變化(hua)調(diao)(diao)節制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)流量(liang)，使得制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)在蒸(zheng)(zheng)發(fa)器內(nei)(nei)的(de)(de)(de)(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)(du)和(he)壓力始終保(bao)持(chi)在最佳狀態，這(zhe)樣(yang)可以(yi)最大(da)限度(du)(du)地(di)提高(gao)制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)換熱效果(guo)，提高(gao)空(kong)(kong)調(diao)(diao)系(xi)統(tong)的(de)(de)(de)(de)(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)效率。3、提供更加精(jing)確的(de)(de)(de)(de)(de)(de)(de)控(kong)制(zhi)(zhi)和(he)調(diao)(diao)節：傳統(tong)的(de)(de)(de)(de)(de)(de)(de)機械膨(peng)脹(zhang)(zhang)(zhang)閥(fa)(fa)(fa)通(tong)常通(tong)過調(diao)(diao)整彈(dan)簧或調(diao)(diao)節裝置(zhi)來控(kong)制(zhi)(zhi)制(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)流量(liang)，而(er)電(dian)(dian)(dian)(dian)子(zi)(zi)膨(peng)脹(zhang)(zhang)(zhang)閥(fa)(fa)(fa)則可以(yi)根據(ju)精(jing)準的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)(zi)信號來調(diao)(diao)節流量(liang)，具有(you)更高(gao)的(de)(de)(de)(de)(de)(de)(de)準確性和(he)穩定性。

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)空調制(zhi)冷效(xiao)果(guo)差，應(ying)考慮是(shi)否(fou)是(shi)電(dian)(dian)(dian)子膨脹(zhang)(zhang)(zhang)閥(fa)壞了，電(dian)(dian)(dian)子膨脹(zhang)(zhang)(zhang)閥(fa)的好壞檢測(ce)方法(fa)是(shi)：正(zheng)常的電(dian)(dian)(dian)子膨脹(zhang)(zhang)(zhang)閥(fa)在插電(dian)(dian)(dian)后(hou)有(you)“咯嗒(da)”的響聲(sheng)。若(ruo)沒(mei)有(you)響聲(sheng)，或(huo)在制(zhi)冷時(shi)膨脹(zhang)(zhang)(zhang)閥(fa)在壓縮機工作后(hou)便開(kai)始結(jie)霜，則應(ying)檢測(ce)其線圈及供電(dian)(dian)(dian)是(shi)否(fou)正(zheng)常（12V脈沖電(dian)(dian)(dian)）。若(ruo)電(dian)(dian)(dian)壓正(zheng)常，則說明電(dian)(dian)(dian)腦板正(zheng)常，若(ruo)此時(shi)膨脹(zhang)(zhang)(zhang)閥(fa)內無(wu)聲(sheng)音(yin)，則是(shi)膨脹(zhang)(zhang)(zhang)閥(fa)不良，這時(shi)先測(ce)量電(dian)(dian)(dian)子膨脹(zhang)(zhang)(zhang)閥(fa)線圈直流電(dian)(dian)(dian)阻，若(ruo)正(zheng)常，則可(ke)(ke)能是(shi)閥(fa)體(ti)內臟堵，可(ke)(ke)用高壓氣體(ti)進行吹洗。另(ling)外，在斷電(dian)(dian)(dian)時(shi)電(dian)(dian)(dian)子膨脹(zhang)(zhang)(zhang)閥(fa)應(ying)復位，這時(shi)可(ke)(ke)通(tong)過聽聲(sheng)音(yin)或(huo)感覺是(shi)否(fou)振動(dong)來判定閥(fa)針(zhen)是(shi)否(fou)有(you)問題。在關機狀態(tai)下，閥(fa)芯一般處(chu)在最大開(kai)度，此時(shi)斷開(kai)線圈引線，然(ran)后(hou)開(kai)機運行，如果(guo)此時(shi)制(zhi)冷劑無(wu)法(fa)通(tong)過，可(ke)(ke)以判定閥(fa)針(zhen)卡死。正(zheng)常情況(kuang)下，用手摸電(dian)(dian)(dian)子膨脹(zhang)(zhang)(zhang)閥(fa)的兩端，進口處(chu)是(shi)溫的，出口處(chu)是(shi)涼的。