Title:
TURBO REFRIGERATOR
Document Type and Number:
Japanese Patent JP2015190662
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a turbo refrigerator capable of preventing temperature drop of a lubrication oil stored in an oil tank when the collected lubrication oil is returned to the oil tank of a compressor.SOLUTION: A turbo refrigerator includes: an evaporator 3 in which a refrigerant evaporates by depriving a fluid to be cooled of heat and refrigeration effect is exhibited; a multistage turbo compressor 1 which compresses the refrigerant by a multistage impeller; a condenser 2 which cools a compressed refrigerant gas by a cooling liquid and condenses it; an economizer 4, which is an intermediate cooler, for supplying the refrigerant gas generated by evaporating a part of the condensed refrigerant liquid to an intermediate portion of a multistage compression stages of the multistage turbo compressor 1; an ejector 25 which sucks the refrigerant containing oil staying in the evaporator 3 with the refrigerant gas being a drive gas, and returns it to an oil tank 16 in the multistage turbo compressor 1; and a heater 35 which heats the refrigerant containing oil.
Inventors:
OTSUKA KOICHIRO
ENDO TETSUYA
AMANO SHUNSUKE
ENDO TETSUYA
AMANO SHUNSUKE
Application Number:
JP2014066997A
Publication Date:
November 02, 2015
Filing Date:
March 27, 2014
Export Citation:
Assignee:
EBARA REFRIGERATION EQUIPMENT
International Classes:
F25B1/00; F25B1/10; F25B43/02
Domestic Patent References:
| JP2009293901A | 2009-12-17 | |||
| JPS56127160A | 1981-10-05 | |||
| JPH08233380A | 1996-09-13 | |||
| JPS5520049U | 1980-02-08 | |||
| JPS5896955A | 1983-06-09 | |||
| JPS58203374A | 1983-11-26 | |||
| JP2008014533A | 2008-01-24 | |||
| JPS6149271U | 1986-04-02 |
Foreign References:
| US20130186128A1 | 2013-07-25 |
Attorney, Agent or Firm:
Isamu Watanabe
Tetsuya Hirosawa
Tetsuya Hirosawa
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