Title:
REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/009898
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a new multi-stage refrigeration device. To address the above problem, this refrigeration device comprises: a utilization-side heat transfer cycle that has a utilization-side compressor, a utilization-side heat exchanger, a utilization-side decompression device, and a utilization-side cascade heat exchanger, and circulates a utilization-side refrigerant; a heat source-side heat transfer cycle that has a heat source-side compressor, a heat source-side heat exchanger, a heat source-side decompression device, and a heat source-side cascade heat exchanger, and circulates a heat source-side refrigerant; a cascade heat exchanger that exchanges heat between the utilization-side refrigerant of the utilization-side condenser and the heat source-side refrigerant of the heat source-side evaporator; and a control device. The utilization-side refrigerant has a boiling point in the range of minus 30°C to plus 25°C, inclusive, and the heat source-side refrigerant has a boiling point of minus 55°C or more but less than minus 30°C.
Inventors:
OHKUBO SHUN (JP)
TSUCHIYA TATSUMI (JP)
NAKAUE TSUBASA (JP)
YAMADA TAKUROU (JP)
TOKUNO SATOSHI (JP)
TSUCHIYA TATSUMI (JP)
NAKAUE TSUBASA (JP)
YAMADA TAKUROU (JP)
TOKUNO SATOSHI (JP)
Application Number:
PCT/JP2021/025511
Publication Date:
January 13, 2022
Filing Date:
July 06, 2021
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B1/00; F25B7/00
Domestic Patent References:
| WO2015140872A1 | 2015-09-24 | |||
| WO2019124402A1 | 2019-06-27 | |||
| WO2013018148A1 | 2013-02-07 | |||
| WO2015140873A1 | 2015-09-24 |
Foreign References:
| JP2016166714A | 2016-09-15 | |||
| JP2015529788A | 2015-10-08 | |||
| JPH05133649A | 1993-05-28 | |||
| JP2014196869A | 2014-10-16 |
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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