| 摘要 |
<P>PROBLEM TO BE SOLVED: 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. <P>SOLUTION: 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. <P>COPYRIGHT: (C)2012,JPO&INPIT |
