一、電子膨脹閥控制原理是什么
電(dian)(dian)(dian)子膨(peng)脹(zhang)閥(fa)(fa)(fa)(fa)是(shi)一種電(dian)(dian)(dian)子控(kong)制(zhi)的(de)(de)(de)節(jie)流(liu)元件(jian),它可以(yi)按照預(yu)設程序調節(jie)蒸發器(qi)供液量(liang),目前電(dian)(dian)(dian)子膨(peng)脹(zhang)閥(fa)(fa)(fa)(fa)主要有電(dian)(dian)(dian)磁式膨(peng)脹(zhang)閥(fa)(fa)(fa)(fa)和電(dian)(dian)(dian)動(dong)(dong)式膨(peng)脹(zhang)閥(fa)(fa)(fa)(fa)兩(liang)種,兩(liang)者(zhe)的(de)(de)(de)工(gong)作原理(li)有些不同:1、電(dian)(dian)(dian)磁式電(dian)(dian)(dian)子膨(peng)脹(zhang)閥(fa)(fa)(fa)(fa)內部具有電(dian)(dian)(dian)磁線圈(quan),通(tong)過電(dian)(dian)(dian)磁線圈(quan)作為媒介來控(kong)制(zhi)系統流(liu)量(liang)。在(zai)電(dian)(dian)(dian)磁線圈(quan)通(tong)電(dian)(dian)(dian)之前,閥(fa)(fa)(fa)(fa)針(zhen)(zhen)處于(yu)開啟(qi)狀(zhuang)態,在(zai)電(dian)(dian)(dian)磁線圈(quan)通(tong)電(dian)(dian)(dian)之后,閥(fa)(fa)(fa)(fa)針(zhen)(zhen)的(de)(de)(de)開啟(qi)程度由(you)電(dian)(dian)(dian)磁線圈(quan)上的(de)(de)(de)電(dian)(dian)(dian)壓來控(kong)制(zhi),由(you)此,電(dian)(dian)(dian)磁線圈(quan)的(de)(de)(de)電(dian)(dian)(dian)壓就(jiu)控(kong)制(zhi)了膨(peng)脹(zhang)閥(fa)(fa)(fa)(fa)的(de)(de)(de)流(liu)量(liang)。2、電(dian)(dian)(dian)動(dong)(dong)式電(dian)(dian)(dian)子膨(peng)脹(zhang)閥(fa)(fa)(fa)(fa)就(jiu)是(shi)利用步進電(dian)(dian)(dian)機驅動(dong)(dong)的(de)(de)(de),該(gai)裝置(zhi)通(tong)過給步進電(dian)(dian)(dian)機提供的(de)(de)(de)邏輯數字信(xin)號來控(kong)制(zhi)進內部的(de)(de)(de)螺(luo)紋驅動(dong)(dong)閥(fa)(fa)(fa)(fa)針(zhen)(zhen)運動(dong)(dong),由(you)此實現(xian)閥(fa)(fa)(fa)(fa)門流(liu)量(liang)與面積的(de)(de)(de)控(kong)制(zhi)。
二、電子膨脹閥的作用是什么
電(dian)子膨(peng)(peng)脹閥(fa)廣泛應(ying)用于空(kong)(kong)調(diao)(diao)(diao)、冷(leng)(leng)庫、商業制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)等領域,應(ying)用最多(duo)的(de)(de)(de)就是(shi)(shi)空(kong)(kong)調(diao)(diao)(diao)領域,空(kong)(kong)調(diao)(diao)(diao)電(dian)子膨(peng)(peng)脹閥(fa)是(shi)(shi)空(kong)(kong)調(diao)(diao)(diao)系(xi)統中的(de)(de)(de)一個(ge)重要(yao)(yao)組(zu)件(jian),其主要(yao)(yao)作用是(shi)(shi)控制(zhi)(zhi)(zhi)(zhi)(zhi)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)進入(ru)室(shi)內(nei)(nei)蒸(zheng)發器(qi)的(de)(de)(de)流(liu)(liu)量(liang),從而實現空(kong)(kong)調(diao)(diao)(diao)系(xi)統的(de)(de)(de)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)效(xiao)(xiao)果,具(ju)體來說(shuo),作用主要(yao)(yao)有(you)以(yi)下幾點:1、控制(zhi)(zhi)(zhi)(zhi)(zhi)空(kong)(kong)調(diao)(diao)(diao)系(xi)統的(de)(de)(de)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)效(xiao)(xiao)果:電(dian)子膨(peng)(peng)脹閥(fa)可(ke)以(yi)根據(ju)(ju)室(shi)內(nei)(nei)溫(wen)度(du)(du)的(de)(de)(de)變(bian)化,自動調(diao)(diao)(diao)節(jie)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)流(liu)(liu)量(liang),保持(chi)室(shi)內(nei)(nei)溫(wen)度(du)(du)穩(wen)定,當室(shi)內(nei)(nei)溫(wen)度(du)(du)升高(gao)時(shi),膨(peng)(peng)脹閥(fa)會(hui)減少制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)流(liu)(liu)量(liang),降(jiang)低蒸(zheng)發器(qi)的(de)(de)(de)溫(wen)度(du)(du),從而降(jiang)低室(shi)內(nei)(nei)溫(wen)度(du)(du);當室(shi)內(nei)(nei)溫(wen)度(du)(du)下降(jiang)時(shi),膨(peng)(peng)脹閥(fa)會(hui)增加(jia)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)流(liu)(liu)量(liang),提高(gao)蒸(zheng)發器(qi)的(de)(de)(de)溫(wen)度(du)(du),從而提高(gao)室(shi)內(nei)(nei)溫(wen)度(du)(du)。2、提高(gao)空(kong)(kong)調(diao)(diao)(diao)系(xi)統的(de)(de)(de)效(xiao)(xiao)率:由于電(dian)子膨(peng)(peng)脹閥(fa)能夠根據(ju)(ju)室(shi)內(nei)(nei)溫(wen)度(du)(du)變(bian)化調(diao)(diao)(diao)節(jie)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)流(liu)(liu)量(liang),使(shi)得(de)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)在蒸(zheng)發器(qi)內(nei)(nei)的(de)(de)(de)溫(wen)度(du)(du)和(he)(he)壓(ya)力始終保持(chi)在最佳(jia)狀(zhuang)態,這樣可(ke)以(yi)最大限度(du)(du)地提高(gao)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)換(huan)熱效(xiao)(xiao)果,提高(gao)空(kong)(kong)調(diao)(diao)(diao)系(xi)統的(de)(de)(de)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)效(xiao)(xiao)率。3、提供更加(jia)精(jing)確的(de)(de)(de)控制(zhi)(zhi)(zhi)(zhi)(zhi)和(he)(he)調(diao)(diao)(diao)節(jie):傳統的(de)(de)(de)機械膨(peng)(peng)脹閥(fa)通常通過調(diao)(diao)(diao)整彈簧(huang)或調(diao)(diao)(diao)節(jie)裝(zhuang)置來控制(zhi)(zhi)(zhi)(zhi)(zhi)制(zhi)(zhi)(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)(ji)的(de)(de)(de)流(liu)(liu)量(liang),而電(dian)子膨(peng)(peng)脹閥(fa)則可(ke)以(yi)根據(ju)(ju)精(jing)準(zhun)(zhun)的(de)(de)(de)電(dian)子信號來調(diao)(diao)(diao)節(jie)流(liu)(liu)量(liang),具(ju)有(you)更高(gao)的(de)(de)(de)準(zhun)(zhun)確性(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
如果(guo)空調制冷(leng)效果(guo)差,應(ying)(ying)(ying)考慮(lv)是(shi)(shi)否(fou)是(shi)(shi)電(dian)(dian)(dian)(dian)子膨(peng)(peng)(peng)脹(zhang)(zhang)(zhang)(zhang)(zhang)閥(fa)(fa)(fa)壞了,電(dian)(dian)(dian)(dian)子膨(peng)(peng)(peng)脹(zhang)(zhang)(zhang)(zhang)(zhang)閥(fa)(fa)(fa)的(de)好壞檢(jian)(jian)測(ce)方法是(shi)(shi):正(zheng)(zheng)常的(de)電(dian)(dian)(dian)(dian)子膨(peng)(peng)(peng)脹(zhang)(zhang)(zhang)(zhang)(zhang)閥(fa)(fa)(fa)在(zai)插電(dian)(dian)(dian)(dian)后(hou)有“咯嗒”的(de)響聲(sheng)(sheng)(sheng)。若(ruo)(ruo)沒有響聲(sheng)(sheng)(sheng),或在(zai)制冷(leng)時(shi)膨(peng)(peng)(peng)脹(zhang)(zhang)(zhang)(zhang)(zhang)閥(fa)(fa)(fa)在(zai)壓(ya)縮機(ji)工作后(hou)便開始結霜,則應(ying)(ying)(ying)檢(jian)(jian)測(ce)其(qi)線(xian)圈及供電(dian)(dian)(dian)(dian)是(shi)(shi)否(fou)正(zheng)(zheng)常(12V脈沖電(dian)(dian)(dian)(dian))。若(ruo)(ruo)電(dian)(dian)(dian)(dian)壓(ya)正(zheng)(zheng)常,則說(shuo)明電(dian)(dian)(dian)(dian)腦(nao)板(ban)正(zheng)(zheng)常,若(ruo)(ruo)此時(shi)膨(peng)(peng)(peng)脹(zhang)(zhang)(zhang)(zhang)(zhang)閥(fa)(fa)(fa)內(nei)無聲(sheng)(sheng)(sheng)音,則是(shi)(shi)膨(peng)(peng)(peng)脹(zhang)(zhang)(zhang)(zhang)(zhang)閥(fa)(fa)(fa)不良,這時(shi)先測(ce)量電(dian)(dian)(dian)(dian)子膨(peng)(peng)(peng)脹(zhang)(zhang)(zhang)(zhang)(zhang)閥(fa)(fa)(fa)線(xian)圈直流電(dian)(dian)(dian)(dian)阻,若(ruo)(ruo)正(zheng)(zheng)常,則可(ke)能是(shi)(shi)閥(fa)(fa)(fa)體(ti)內(nei)臟堵(du),可(ke)用高壓(ya)氣體(ti)進行吹洗。另外,在(zai)斷電(dian)(dian)(dian)(dian)時(shi)電(dian)(dian)(dian)(dian)子膨(peng)(peng)(peng)脹(zhang)(zhang)(zhang)(zhang)(zhang)閥(fa)(fa)(fa)應(ying)(ying)(ying)復位,這時(shi)可(ke)通過聽聲(sheng)(sheng)(sheng)音或感覺是(shi)(shi)否(fou)振動來判定閥(fa)(fa)(fa)針(zhen)是(shi)(shi)否(fou)有問題。在(zai)關(guan)機(ji)狀(zhuang)態下(xia)(xia),閥(fa)(fa)(fa)芯一般處(chu)(chu)在(zai)最大(da)開度,此時(shi)斷開線(xian)圈引線(xian),然(ran)后(hou)開機(ji)運行,如果(guo)此時(shi)制冷(leng)劑(ji)無法通過,可(ke)以判定閥(fa)(fa)(fa)針(zhen)卡(ka)死(si)。正(zheng)(zheng)常情況下(xia)(xia),用手摸電(dian)(dian)(dian)(dian)子膨(peng)(peng)(peng)脹(zhang)(zhang)(zhang)(zhang)(zhang)閥(fa)(fa)(fa)的(de)兩端,進口(kou)處(chu)(chu)是(shi)(shi)溫(wen)的(de),出口(kou)處(chu)(chu)是(shi)(shi)涼(liang)的(de)。