| 摘要 |
PROBLEM TO BE SOLVED: To provide a turbo refrigeration device having a two-stage turbo compressor with high efficiency. SOLUTION: This turbo refrigeration device has a control section controlling the openings of a first inlet vane of a first impeller and that of a second inlet vane of a second impeller. The control section has a dependent mode for operating, in a dependent-mode priority region A, the second inlet vane by making it dependent on the first inlet vane and also has an independent mode for increasing, in an independent-mode priority region B, the opening of the second inlet vane independently of the first inlet vane. COPYRIGHT: (C)2008,JPO&INPIT
|
