Title:
REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/141633
Kind Code:
A1
Abstract:
[Problem] To provide a refrigeration device capable of having improved cooling capacity and efficiency by controlling high-pressure-side pressure in low-stage-side refrigerant circuits to an optimum value. [Solution] A refrigeration device (1) comprises a high-stage-side refrigerant circuit (4), first and second low-stage-side refrigerant circuits (6A, 6B), and cascade heat exchangers (43A, 43B) that evaporate a refrigerant in the high-stage-side refrigerant circuit (4) and cool high-pressure-side refrigerant in the low-stage-side refrigerant circuits (6A, 6B), carbon dioxide being sealed as refrigerant in each refrigerant circuit (4, 6A, 6B). In this refrigeration device (1), a pressure-regulating expansion valve (31) for regulating high-pressure-side pressure in the low-stage-side refrigerant circuits (6A, 6B) is provided.
Inventors:
MIYAGI KOSUKE (JP)
SUDA JUNICHI (JP)
HIJI YUSUKE (JP)
HAYAKAWA MASATAKA (JP)
OMOTE KAZUHIRO (JP)
SUDA JUNICHI (JP)
HIJI YUSUKE (JP)
HAYAKAWA MASATAKA (JP)
OMOTE KAZUHIRO (JP)
Application Number:
PCT/JP2015/057718
Publication Date:
September 24, 2015
Filing Date:
March 16, 2015
Export Citation:
Assignee:
SANDEN HOLDINGS CORP (JP)
International Classes:
F25B1/00; F25B5/02; F25B5/04; F25B6/02; F25B6/04; F25B7/00
Domestic Patent References:
| WO2012002248A1 | 2012-01-05 | |||
| WO2013111786A1 | 2013-08-01 | |||
| WO2012060164A1 | 2012-05-10 | |||
| WO2014030238A1 | 2014-02-27 |
Foreign References:
| JP2011133206A | 2011-07-07 | |||
| JP2013181513A | 2013-09-12 | |||
| JP2012193866A | 2012-10-11 | |||
| JP2012112622A | 2012-06-14 | |||
| JP2014016055A | 2014-01-30 |
Other References:
See also references of EP 3106779A4
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