Title:
TURBO REFRIGERATOR
Document Type and Number:
Japanese Patent JP2015183979
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a turbo refrigerator capable of cooling an electric motor by avoiding cavitation of a refrigerant pump even when the load of the refrigerator is substantially zero so as to continue the stable driving of the refrigerator.SOLUTION: A turbo refrigerator comprises: an evaporator 3 exhibiting refrigeration effect by depriving heat from fluid to be cooled so as to vaporize refrigerant; a turbo compressor 1 having a centrifugal impeller and a variable opening vane 14 for adjusting the suction flow rate of refrigerant gas to the impeller, the turbo compressor 1 for compressing the refrigerant gas by the centrifugal impeller; an electric motor 13 for driving the turbo compressor 1; and a condenser 2 for condensing the compressed refrigerant gas by cooling the refrigerant gas with cooling fluid. The turbo refrigerator further comprises: a refrigerant pump 7 for pressure feeding the refrigerant of the condenser 2 to the electric motor 13; an auxiliary refrigerant pump 28 for pressure feeding the refrigerant of the evaporator 3 to the condenser 2; and a control device 30 for operation control of the auxiliary refrigerant pump 28.
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Inventors:
ENDO TETSUYA
UCHIMURA TOMOYUKI
UCHIMURA TOMOYUKI
Application Number:
JP2014063473A
Publication Date:
October 22, 2015
Filing Date:
March 26, 2014
Export Citation:
Assignee:
EBARA REFRIGERATION EQUIPMENT
International Classes:
F25B1/053; F25B1/00; F25B41/00; F25B41/04
Domestic Patent References:
| JPH07234025A | 1995-09-05 | |||
| JP2009293901A | 2009-12-17 | |||
| JP2011017455A | 2011-01-27 | |||
| JP2004169941A | 2004-06-17 |
Attorney, Agent or Firm:
Isamu Watanabe
Tetsuya Hirosawa
Tetsuya Hirosawa