Title:
REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/262624
Kind Code:
A1
Abstract:
A two-stage compression type refrigeration device (1) for compressing a refrigerant to a supercritical range is provided with: low-stage-side compression units (22, 23); a high-stage-side compression unit (21); an intermediate cooler (17); a heat source-side heat exchanger (13); a use-side heat exchanger (64); an economizer circuit (38); and a control unit (100). The control unit (100) increases cooling performance of the intermediate cooler (17) without increasing the refrigerant flowrate (Q) of the economizer circuit (38) if the cooling performance of the intermediate cooler (17) is not at maximum when a discharge temperature (Td) which is the temperature of the refrigerant discharged from the high-stage-side compression unit (21) is higher than a first temperature in a first operation where the heat source-side heat exchanger (13) functions as a heat radiator and the use-side heat exchanger (64) functions as an evaporator.
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Inventors:
TAKEGAMI MASAAKI (JP)
TAGUCHI SHUICHI (JP)
UEHARA YOSHIKAZU (JP)
TAGUCHI SHUICHI (JP)
UEHARA YOSHIKAZU (JP)
Application Number:
PCT/JP2020/025267
Publication Date:
December 30, 2020
Filing Date:
June 26, 2020
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B1/00; F25B1/10
Domestic Patent References:
| WO2009069678A1 | 2009-06-04 |
Foreign References:
| JP2012141131A | 2012-07-26 | |||
| JP2007190256A | 2007-08-02 | |||
| JP2012021721A | 2012-02-02 | |||
| JP2009097847A | 2009-05-07 |
Other References:
See also references of EP 3985326A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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