| 摘要 |
<p>In a gas compressor, a cyclone block (70) is configured to include a substantially cylindrical space (75) into which a compressed coolant gas (G) is introduced to separate refrigeration oil (R) from the gas (G). A pressure bypass (76) is formed in the substantially cylindrical space (75) defined by an outer cylindrical unit (71) and an inner cylindrical unit (72) to communicate with a discharge chamber (21) having lower pressure than that of the substantially cylindrical space (75). The pressure bypass (76) includes a pressure valve to open and close the pressure bypass (76) in accordance with the internal pressure of the substantially cylindrical space (75) having the pressure bypass (76). During a high speed operation of a compressor unit (60), the coolant gas (G) including unseparated refrigeration oil (R) is discharged from the pressure bypass (76).</p> |
