| 摘要 |
<p>A dry pump comprising cylinders (31, 32, 33, 34, 35), pump chambers (11, 12, 13, 14, 15) respectively formed in the cylinders(31, 32, 33, 34, 35), partition walls (36, 37, 38, 39) each separating adjacent pump chambers (11, 12, 13, 14, 15) from each other, rotors (21, 22, 23, 24, 25) contained inside the pump chambers(11, 12, 13, 14, 15), rotor shafts(20a, 20b) which are the rotating shafts of the rotors (21, 22, 23, 24, 25), and refrigerant paths (38) formed inside the partition walls (36, 37, 38, 39) and allowing a refrigerant to flow therethrough.</p> |
