復疊機組

多(duo)級(ji)壓縮(suo)式(shi)制(zhi)(zhi)(zhi)(zhi)冷循環(huan)雖然(ran)比單(dan)級(ji)壓縮(suo)式(shi)制(zhi)(zhi)(zhi)(zhi)冷循環(huan)達到的蒸(zheng)發溫(wen)度更(geng)低，但受制(zhi)(zhi)(zhi)(zhi)冷劑自身(shen)物(wu)性(xing)及壓縮(suo)機(ji)工作的特性(xing)的限制(zhi)(zhi)(zhi)(zhi)，當(dang)蒸(zheng)發溫(wen)度更(geng)低時，采用多(duo)級(ji)壓縮(suo)式(shi)制(zhi)(zhi)(zhi)(zhi)冷循環(huan)還滿足(zu)不了要求，此時，需要采用復疊式(shi)制(zhi)(zhi)(zhi)(zhi)冷循環(huan)。

復疊式冷(leng)(leng)凍機是(shi)(shi)由兩(liang)個或兩(liang)個以上獨立的制(zhi)(zhi)(zhi)冷(leng)(leng)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)組成，分別被(bei)稱(cheng)為高溫(wen)(wen)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)和低(di)溫(wen)(wen)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)。在各單獨的制(zhi)(zhi)(zhi)冷(leng)(leng)系統(tong)中充有不同(tong)性(xing)質的制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)，高溫(wen)(wen)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)通(tong)常采用(yong)中溫(wen)(wen)制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)，低(di)溫(wen)(wen)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)中通(tong)常采用(yong)低(di)溫(wen)(wen)制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)。每一(yi)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)均可采用(yong)單級或雙級壓縮制(zhi)(zhi)(zhi)冷(leng)(leng)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)。這兩(liang)個部分通(tong)過一(yi)個冷(leng)(leng)凝蒸發器聯(lian)系起來，它即(ji)是(shi)(shi)低(di)溫(wen)(wen)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)的冷(leng)(leng)凝器，也是(shi)(shi)高溫(wen)(wen)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)的蒸發器，即(ji)高溫(wen)(wen)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)中制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)的蒸發用(yong)來冷(leng)(leng)凝低(di)溫(wen)(wen)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)中的制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)。這樣，低(di)度溫(wen)(wen)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)吸收的熱量(制(zhi)(zhi)(zhi)冷(leng)(leng)量)傳給(gei)高溫(wen)(wen)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)的制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)，高溫(wen)(wen)循(xun)(xun)(xun)環(huan)(huan)(huan)(huan)(huan)(huan)的制(zhi)(zhi)(zhi)冷(leng)(leng)劑(ji)再(zai)將熱量傳給(gei)環(huan)(huan)(huan)(huan)(huan)(huan)境介質。