Patent ID: 11859605
Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 3:
4. The compressor system according to claim 3,
wherein the bypass pathway on a suction side of the second pump branches from a downstream side of the low-pressure stage compressor on the first cooling liquid pathway, the first valve and an orifice downstream of the first valve are provided on the bypass pathway on the suction side of the second pump, the bypass pathway on the suction side of the second pump merges with an outlet side of the intercooler on the second cooling liquid pathway, an additional bypass pathway branches from a downstream side of the high-pressure stage compressor on the first cooling liquid pathway, the additional bypass pathway merges with the bypass pathway on the suction side of the second pump between the intercooler and the aftercooler on the second cooling liquid pathway, and a fifth valve is provided on the additional bypass pathway, and
the control unit performs the first control to close the first valve, the second valve, and the fifth valve and open the third valve and the fourth valve, and performs the second control to open the first valve, the second valve, and the fifth valve and close the third valve and the fourth valve.