To provide a turbo refrigerator for preventing or suppressing the reverse rotation of a turbo compressor and for reducing a pressure loss accompanying the flowage of a refrigerant.
A turbo refrigerator 1 includes a condenser 4 that cools and liquefies a compressed refrigerant, an evaporator 5 that vaporizes the liquefied refrigerant and takes away heat of vaporization from a cooling object, thereby cooling the cooling object, and a turbo compressor 2 that compresses the refrigerant vaporized by the evaporator 5 by rotation of an impeller 21 driven to rotate by an electric motor 22, and supplies the compressed refrigerant to the condenser 4. Moreover, the turbo refrigerator includes a braking device 3 that operates the electric motor 22 as a generator when the impeller 21 is urged to rotate by the vaporized refrigerant, so as to brake the rotation of the impeller 21.
WO/2018/207748 | LOAD OPERATION CONTROL SYSTEM |
WO/2000/042366 | ADAPTIVE HOT GAS BYPASS CONTROL FOR CENTRIFUGAL CHILLERS |
FUJISAKI KATSUYA
JPH10185252A | 1998-07-14 | |||
JP2002147386A | 2002-05-22 | |||
JP2004112877A | 2004-04-08 | |||
JPS57100160U | 1982-06-19 |
Masatake Shiga
Masayu Horiuchi
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