Title:
REFRIGERATION DEVICE
Document Type and Number:
Japanese Patent JP2014126324
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a refrigeration device capable of reducing heat loss and pressure loss in an oil separator during a heating operation while suppressing lubrication oil from being supplied to an intermediate cooler during a cooling operation in the refrigeration device performing a plurality of compression operations.SOLUTION: A four-way switch valve group 25 of an air conditioner 1 switches an operation state over between a cooling operation state and a heating operation state. In the cooling operation state, while refrigerant is passed through first to third oil separators 31a to 33a, first and second indoor heat exchangers 12a and 13a are made to act as refrigerant evaporators, a fourth outdoor heat exchanger 44 is made to act as a heat radiator, and first to third outdoor heat exchangers 41 to 43 are made to act as intercoolers. In the heating operation state, while the refrigerant is not passed through the first to third oil separators, the first to the fourth outdoor heat exchangers are all made to act as evaporators and the first and the second indoor heat exchangers are made to act as heat radiators.
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Inventors:
YO KUNITADA
OKAMOTO TETSUYA
IWATA YASUHIRO
KOSHO KAZUHIRO
OKAMOTO TETSUYA
IWATA YASUHIRO
KOSHO KAZUHIRO
Application Number:
JP2012284997A
Publication Date:
July 07, 2014
Filing Date:
December 27, 2012
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F25B1/00; F25B1/10; F25B43/02
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation