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Title:
COOLING DEVICE
Document Type and Number:
Japanese Patent JP2017009248
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable the practical use of a cooling device in which a refrigeration circuit formed by a plurality of condensing units is commonalized.SOLUTION: A refrigerant inlet part in a parallel connection set P of condensing units 3 is provided with a common accumulator 4. Oil return passages 12 for returning refrigerator oil o to a compressor 8 in each of the condensing units 3 from the common accumulator 4 are provided. Oil return valves 13 for opening/closing the respective oil return passages 12 are provided. Oil level sensors 16 are provided in oil reservoirs of the refrigerator oil o in the respective condensing units 3. Oil return control means 18 for performing an opening/closing operation of the respective oil return valves 13 on the basis of detection information of the oil level sensors 16 is provided.SELECTED DRAWING: Figure 1

Inventors:
HINOHARA MASANOBU
KURETA TATSU
Application Number:
JP2015127844A
Publication Date:
January 12, 2017
Filing Date:
June 25, 2015
Export Citation:
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Assignee:
TAIKISHA KK
International Classes:
F25B1/00; F25B43/02; F25B49/02
Domestic Patent References:
JP2010190545A2010-09-02
JP2003279175A2003-10-02
JP2007292426A2007-11-08
JP2006010175A2006-01-12
JP2000274845A2000-10-06
JPH07305921A1995-11-21
Foreign References:
US6125648A2000-10-03
Attorney, Agent or Firm:
Patent business corporation r&c



 
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