螺桿壓縮機，也稱螺旋式壓縮機，包括螺桿空氣壓縮機和螺桿工藝壓縮機（氯乙烯壓縮機等），螺桿機為容積式雙螺桿噴油壓縮機，一般為箱式撬裝結構。

螺桿(gan)壓縮機(ji)(ji)分為單(dan)螺桿(gan)壓縮機(ji)(ji)和雙(shuang)螺桿(gan)壓縮機(ji)(ji)，直到1934年瑞典皇家理(li)工(gong)學院A.Lysholm才奠(dian)定了螺桿(gan)式壓縮機(ji)(ji)SRM技術(shu)，并開始(shi)在工(gong)業(ye)上應用，取得了迅(xun)速的(de)發展。

雙螺桿主(zhu)機(ji)做(zuo)介紹(shao)，工作(zuo)過(guo)(guo)(guo)程：齒(chi)間(jian)基(ji)元容(rong)(rong)(rong)積(ji)(ji)（即每對齒(chi)所形成的工作(zuo)容(rong)(rong)(rong)積(ji)(ji)）隨著轉(zhuan)(zhuan)子旋轉(zhuan)(zhuan)而(er)逐步擴(kuo)大，并(bing)和(he)機(ji)器左下方的進(jin)(jin)氣(qi)孔(kong)(kong)口(kou)連通(tong)，氣(qi)體(ti)通(tong)過(guo)(guo)(guo)孔(kong)(kong)口(kou)進(jin)(jin)入基(ji)元容(rong)(rong)(rong)積(ji)(ji)，進(jin)(jin)氣(qi)過(guo)(guo)(guo)程開始(shi)(shi)(shi)；轉(zhuan)(zhuan)子旋轉(zhuan)(zhuan)到(dao)一定角度后(hou)，齒(chi)間(jian)基(ji)元容(rong)(rong)(rong)積(ji)(ji)超過(guo)(guo)(guo)進(jin)(jin)氣(qi)孔(kong)(kong)口(kou)位置后(hou)，與(yu)進(jin)(jin)氣(qi)孔(kong)(kong)口(kou)斷開，進(jin)(jin)氣(qi)過(guo)(guo)(guo)程結束；轉(zhuan)(zhuan)子轉(zhuan)(zhuan)到(dao)某一角度后(hou)，兩(liang)個孤立的齒(chi)間(jian)基(ji)元容(rong)(rong)(rong)積(ji)(ji)由于(yu)陽螺桿的凸齒(chi)侵入陰螺桿的凹(ao)齒(chi)，基(ji)元容(rong)(rong)(rong)積(ji)(ji)同(tong)時(shi)開始(shi)(shi)(shi)縮小，實現氣(qi)體(ti)的壓縮過(guo)(guo)(guo)程。直到(dao)一對基(ji)元容(rong)(rong)(rong)積(ji)(ji)與(yu)排(pai)氣(qi)孔(kong)(kong)口(kou)相(xiang)連通(tong)的瞬間(jian)為止；基(ji)元容(rong)(rong)(rong)積(ji)(ji)和(he)排(pai)氣(qi)孔(kong)(kong)口(kou)相(xiang)連通(tong)后(hou)，排(pai)氣(qi)過(guo)(guo)(guo)程開始(shi)(shi)(shi)，排(pai)氣(qi)過(guo)(guo)(guo)程一直持(chi)續到(dao)兩(liang)個齒(chi)完(wan)全(quan)嚙合，即兩(liang)個基(ji)元容(rong)(rong)(rong)積(ji)(ji)因兩(liang)個轉(zhuan)(zhuan)子完(wan)全(quan)嚙合而(er)等(deng)于(yu)零時(shi)。