壓(ya)(ya)(ya)縮式(shi)制(zhi)(zhi)(zhi)(zhi)冷(leng)機(ji)。依靠壓(ya)(ya)(ya)縮機(ji)的作(zuo)用(yong)提高(gao)制(zhi)(zhi)(zhi)(zhi)冷(leng)劑的壓(ya)(ya)(ya)力以實現(xian)制(zhi)(zhi)(zhi)(zhi)冷(leng)循(xun)環，按制(zhi)(zhi)(zhi)(zhi)冷(leng)劑種(zhong)類又可分(fen)為蒸氣(qi)壓(ya)(ya)(ya)縮式(shi)制(zhi)(zhi)(zhi)(zhi)冷(leng)機(ji)(以液壓(ya)(ya)(ya)蒸發制(zhi)(zhi)(zhi)(zhi)冷(leng)為基礎，制(zhi)(zhi)(zhi)(zhi)冷(leng)劑要發生(sheng)周期(qi)性(xing)的氣(qi)-液相變)和氣(qi)體(ti)壓(ya)(ya)(ya)縮式(shi)制(zhi)(zhi)(zhi)(zhi)冷(leng)機(ji)(以高(gao)壓(ya)(ya)(ya)氣(qi)體(ti)膨脹(zhang)制(zhi)(zhi)(zhi)(zhi)冷(leng)為基礎，制(zhi)(zhi)(zhi)(zhi)冷(leng)劑始終處于氣(qi)體(ti)狀態(tai))兩(liang)種(zhong)。吸收式(shi)制(zhi)(zhi)(zhi)(zhi)冷(leng)機(ji)。依靠吸收器(qi)-發生(sheng)器(qi)組(熱化(hua)學壓(ya)(ya)(ya)縮器(qi))的作(zuo)用(yong)完成制(zhi)(zhi)(zhi)(zhi)冷(leng)循(xun)環，又可分(fen)為氨水吸收式(shi)、溴化(hua)鋰(li)吸收式(shi)和吸收擴散式(shi)3種(zhong)。