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Title:
TURBO REFRIGERATOR
Document Type and Number:
Japanese Patent JP2011220640
Kind Code:
A
Abstract:

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.


Inventors:
SUGITANI MUNEYASU
FUJISAKI KATSUYA
Application Number:
JP2010092314A
Publication Date:
November 04, 2011
Filing Date:
April 13, 2010
Export Citation:
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Assignee:
IHI CORP
International Classes:
F25B1/053; F04D27/00
Domestic Patent References:
JPH10185252A1998-07-14
JP2002147386A2002-05-22
JP2004112877A2004-04-08
JPS57100160U1982-06-19
Attorney, Agent or Firm:
Kazuya Nishi
Masatake Shiga
Masayu Horiuchi