一、電子膨脹閥控制原理是什么

電(dian)(dian)(dian)(dian)子(zi)(zi)膨(peng)脹(zhang)閥(fa)(fa)是一種電(dian)(dian)(dian)(dian)子(zi)(zi)控(kong)(kong)(kong)制(zhi)(zhi)的(de)節(jie)流元件，它可以按照預設程序調節(jie)蒸發器供液量，目前電(dian)(dian)(dian)(dian)子(zi)(zi)膨(peng)脹(zhang)閥(fa)(fa)主要有(you)電(dian)(dian)(dian)(dian)磁(ci)(ci)式(shi)膨(peng)脹(zhang)閥(fa)(fa)和電(dian)(dian)(dian)(dian)動(dong)式(shi)膨(peng)脹(zhang)閥(fa)(fa)兩種，兩者的(de)工作原理有(you)些不同：1、電(dian)(dian)(dian)(dian)磁(ci)(ci)式(shi)電(dian)(dian)(dian)(dian)子(zi)(zi)膨(peng)脹(zhang)閥(fa)(fa)內(nei)部具有(you)電(dian)(dian)(dian)(dian)磁(ci)(ci)線(xian)圈，通(tong)過(guo)電(dian)(dian)(dian)(dian)磁(ci)(ci)線(xian)圈作為媒介來控(kong)(kong)(kong)制(zhi)(zhi)系統(tong)流量。在電(dian)(dian)(dian)(dian)磁(ci)(ci)線(xian)圈通(tong)電(dian)(dian)(dian)(dian)之前，閥(fa)(fa)針(zhen)處于開(kai)啟狀態，在電(dian)(dian)(dian)(dian)磁(ci)(ci)線(xian)圈通(tong)電(dian)(dian)(dian)(dian)之后，閥(fa)(fa)針(zhen)的(de)開(kai)啟程度由電(dian)(dian)(dian)(dian)磁(ci)(ci)線(xian)圈上(shang)的(de)電(dian)(dian)(dian)(dian)壓來控(kong)(kong)(kong)制(zhi)(zhi)，由此(ci)，電(dian)(dian)(dian)(dian)磁(ci)(ci)線(xian)圈的(de)電(dian)(dian)(dian)(dian)壓就控(kong)(kong)(kong)制(zhi)(zhi)了(le)膨(peng)脹(zhang)閥(fa)(fa)的(de)流量。2、電(dian)(dian)(dian)(dian)動(dong)式(shi)電(dian)(dian)(dian)(dian)子(zi)(zi)膨(peng)脹(zhang)閥(fa)(fa)就是利(li)用步進電(dian)(dian)(dian)(dian)機驅(qu)動(dong)的(de)，該裝置通(tong)過(guo)給步進電(dian)(dian)(dian)(dian)機提供的(de)邏輯(ji)數字信號來控(kong)(kong)(kong)制(zhi)(zhi)進內(nei)部的(de)螺紋驅(qu)動(dong)閥(fa)(fa)針(zhen)運動(dong)，由此(ci)實現閥(fa)(fa)門(men)流量與面(mian)積的(de)控(kong)(kong)(kong)制(zhi)(zhi)。

二、電子膨脹閥的作用是什么

電子膨(peng)脹(zhang)(zhang)(zhang)閥(fa)廣泛應用(yong)(yong)(yong)于(yu)空(kong)(kong)(kong)調(diao)(diao)(diao)、冷(leng)(leng)(leng)(leng)庫、商業制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)等領(ling)域，應用(yong)(yong)(yong)最多的(de)(de)(de)就是空(kong)(kong)(kong)調(diao)(diao)(diao)領(ling)域，空(kong)(kong)(kong)調(diao)(diao)(diao)電子膨(peng)脹(zhang)(zhang)(zhang)閥(fa)是空(kong)(kong)(kong)調(diao)(diao)(diao)系統(tong)(tong)中的(de)(de)(de)一個重要組件，其主要作(zuo)用(yong)(yong)(yong)是控制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)進(jin)入室內(nei)蒸(zheng)發(fa)(fa)器的(de)(de)(de)流(liu)量(liang)，從而實現空(kong)(kong)(kong)調(diao)(diao)(diao)系統(tong)(tong)的(de)(de)(de)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)效果，具(ju)體來說，作(zuo)用(yong)(yong)(yong)主要有(you)(you)以(yi)(yi)下(xia)幾點：1、控制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)空(kong)(kong)(kong)調(diao)(diao)(diao)系統(tong)(tong)的(de)(de)(de)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)效果：電子膨(peng)脹(zhang)(zhang)(zhang)閥(fa)可以(yi)(yi)根(gen)據(ju)(ju)室內(nei)溫(wen)(wen)(wen)度(du)的(de)(de)(de)變(bian)化，自(zi)動調(diao)(diao)(diao)節制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)的(de)(de)(de)流(liu)量(liang)，保持室內(nei)溫(wen)(wen)(wen)度(du)穩定(ding)，當室內(nei)溫(wen)(wen)(wen)度(du)升高時(shi)，膨(peng)脹(zhang)(zhang)(zhang)閥(fa)會減少(shao)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)的(de)(de)(de)流(liu)量(liang)，降(jiang)低蒸(zheng)發(fa)(fa)器的(de)(de)(de)溫(wen)(wen)(wen)度(du)，從而降(jiang)低室內(nei)溫(wen)(wen)(wen)度(du)；當室內(nei)溫(wen)(wen)(wen)度(du)下(xia)降(jiang)時(shi)，膨(peng)脹(zhang)(zhang)(zhang)閥(fa)會增加制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)的(de)(de)(de)流(liu)量(liang)，提(ti)高蒸(zheng)發(fa)(fa)器的(de)(de)(de)溫(wen)(wen)(wen)度(du)，從而提(ti)高室內(nei)溫(wen)(wen)(wen)度(du)。2、提(ti)高空(kong)(kong)(kong)調(diao)(diao)(diao)系統(tong)(tong)的(de)(de)(de)效率：由于(yu)電子膨(peng)脹(zhang)(zhang)(zhang)閥(fa)能夠根(gen)據(ju)(ju)室內(nei)溫(wen)(wen)(wen)度(du)變(bian)化調(diao)(diao)(diao)節制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)的(de)(de)(de)流(liu)量(liang)，使得制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)在蒸(zheng)發(fa)(fa)器內(nei)的(de)(de)(de)溫(wen)(wen)(wen)度(du)和壓力始(shi)終(zhong)保持在最佳(jia)狀(zhuang)態，這樣(yang)可以(yi)(yi)最大限度(du)地提(ti)高制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)的(de)(de)(de)換熱效果，提(ti)高空(kong)(kong)(kong)調(diao)(diao)(diao)系統(tong)(tong)的(de)(de)(de)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)效率。3、提(ti)供更(geng)加精確的(de)(de)(de)控制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和調(diao)(diao)(diao)節：傳統(tong)(tong)的(de)(de)(de)機械膨(peng)脹(zhang)(zhang)(zhang)閥(fa)通(tong)常通(tong)過調(diao)(diao)(diao)整彈簧或調(diao)(diao)(diao)節裝置來控制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)(leng)(leng)劑(ji)的(de)(de)(de)流(liu)量(liang)，而電子膨(peng)脹(zhang)(zhang)(zhang)閥(fa)則可以(yi)(yi)根(gen)據(ju)(ju)精準(zhun)的(de)(de)(de)電子信號來調(diao)(diao)(diao)節流(liu)量(liang)，具(ju)有(you)(you)更(geng)高的(de)(de)(de)準(zhun)確性和穩定(ding)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(ru)果(guo)空調制(zhi)冷(leng)(leng)(leng)效果(guo)差(cha)，應考(kao)慮是(shi)(shi)(shi)否(fou)是(shi)(shi)(shi)電(dian)(dian)(dian)(dian)子(zi)膨(peng)脹(zhang)閥(fa)(fa)壞了，電(dian)(dian)(dian)(dian)子(zi)膨(peng)脹(zhang)閥(fa)(fa)的好壞檢(jian)測方法是(shi)(shi)(shi)：正(zheng)常(chang)(chang)的電(dian)(dian)(dian)(dian)子(zi)膨(peng)脹(zhang)閥(fa)(fa)在(zai)插(cha)電(dian)(dian)(dian)(dian)后有“咯嗒”的響聲(sheng)。若(ruo)沒有響聲(sheng)，或在(zai)制(zhi)冷(leng)(leng)(leng)時(shi)膨(peng)脹(zhang)閥(fa)(fa)在(zai)壓(ya)縮機工作后便開(kai)始(shi)結霜，則(ze)應檢(jian)測其線圈(quan)及供電(dian)(dian)(dian)(dian)是(shi)(shi)(shi)否(fou)正(zheng)常(chang)(chang)（12V脈(mo)沖電(dian)(dian)(dian)(dian)）。若(ruo)電(dian)(dian)(dian)(dian)壓(ya)正(zheng)常(chang)(chang)，則(ze)說(shuo)明電(dian)(dian)(dian)(dian)腦板(ban)正(zheng)常(chang)(chang)，若(ruo)此時(shi)膨(peng)脹(zhang)閥(fa)(fa)內無(wu)聲(sheng)音，則(ze)是(shi)(shi)(shi)膨(peng)脹(zhang)閥(fa)(fa)不(bu)良(liang)，這時(shi)先測量(liang)電(dian)(dian)(dian)(dian)子(zi)膨(peng)脹(zhang)閥(fa)(fa)線圈(quan)直流電(dian)(dian)(dian)(dian)阻，若(ruo)正(zheng)常(chang)(chang)，則(ze)可(ke)能是(shi)(shi)(shi)閥(fa)(fa)體內臟(zang)堵(du)，可(ke)用高壓(ya)氣體進行吹(chui)洗。另外，在(zai)斷電(dian)(dian)(dian)(dian)時(shi)電(dian)(dian)(dian)(dian)子(zi)膨(peng)脹(zhang)閥(fa)(fa)應復位，這時(shi)可(ke)通過(guo)聽聲(sheng)音或感覺是(shi)(shi)(shi)否(fou)振動來(lai)判定閥(fa)(fa)針(zhen)是(shi)(shi)(shi)否(fou)有問題。在(zai)關機狀態下(xia)，閥(fa)(fa)芯一(yi)般處(chu)(chu)在(zai)最大開(kai)度，此時(shi)斷開(kai)線圈(quan)引線，然后開(kai)機運行，如(ru)果(guo)此時(shi)制(zhi)冷(leng)(leng)(leng)劑(ji)無(wu)法通過(guo)，可(ke)以判定閥(fa)(fa)針(zhen)卡(ka)死。正(zheng)常(chang)(chang)情況下(xia)，用手摸電(dian)(dian)(dian)(dian)子(zi)膨(peng)脹(zhang)閥(fa)(fa)的兩端，進口處(chu)(chu)是(shi)(shi)(shi)溫(wen)的，出口處(chu)(chu)是(shi)(shi)(shi)涼(liang)的。