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Patent Searching and Data


Title:
DUAL REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/156190
Kind Code:
A1
Abstract:
A dual refrigeration device using an earth-friendly refrigerant composition that has a low global warming potential (GWP), that can achieve a low temperature of -80°C, and that can be used as a refrigerant having superior performance in terms of refrigeration capability and other performance aspects. The dual refrigeration device employs: a refrigerant composition which is a mixed refrigerant used as a low-temperature-side refrigerant and which comprises a zeotropic mixture containing 20 mass% or less of carbon dioxide (R744) mixed with difluoroethylene (R1132a); and a refrigerant composition used as a high-temperature-side refrigerant, the refrigerant composition containing 1,1,1,2,3-pentafluoropentene (HFO-1234ze) added to a zeotropic mixture comprising a refrigerant group of difluoromethane (R32), pentafluoroethane (R125), 1,1,1,2-tetrafluoroethane (R134a), and 1,1,3-trifluoroethane (R143a), and the refrigerant composition having a global warming potential (GWP) of 1500 or less.

Inventors:
YUZAWA JIRO
TOYOOKA TAKASHI
Application Number:
PCT/JP2014/001839
Publication Date:
October 02, 2014
Filing Date:
March 28, 2014
Export Citation:
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Assignee:
PANASONIC HEALTHCARE CO LTD (JP)
International Classes:
F25B7/00; F25B1/00; C09K5/04
Domestic Patent References:
WO2013018148A12013-02-07
WO2012157763A12012-11-22
Foreign References:
JP2003062419A2003-03-04
JP2012251170A2012-12-20
JP2013049859A2013-03-14
JP2005015633A2005-01-20
JP5009530B22012-08-22
JP4085897B22008-05-14
Other References:
See also references of EP 2980508A4
Attorney, Agent or Firm:
AKIMOTO, Teruo et al. (JP)
Teruo Akimoto (JP)
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