Title:
REFRIGERATION CIRCUIT DEVICE AND CONTROL METHOD FOR REFRIGERATION CIRCUIT DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/012961
Kind Code:
A1
Abstract:
This refrigeration circuit device comprises: a higher circuit having a first compressor, a condenser, a first pressure-reducing device, and a gasket heat exchanger, and in which a high-side refrigerant circulates; and a lower circuit having a second compressor, a gasket heat exchanger, a second pressure-reducing device, and an evaporator, and in which a low-side refrigerant circulates. The gasket heat exchanger exchanges heat between the high-side refrigerant and the low-side refrigerant; the low-side refrigerant is a non-azeotropic refrigerant mixture; and the pressure of the low-side refrigerant remaining in the lower circuit after the second compressor has stopped is maintained at or below a pressure that enables the low-side refrigerant to maintain incombustibility.
Inventors:
ISHIKAWA TOMOTAKA (JP)
NISHIYAMA TAKUMI (JP)
NISHIYAMA TAKUMI (JP)
Application Number:
PCT/JP2021/029053
Publication Date:
February 09, 2023
Filing Date:
August 05, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F25B7/00
Domestic Patent References:
| WO2015140873A1 | 2015-09-24 | |||
| WO2015045354A1 | 2015-04-02 | |||
| WO2018198203A1 | 2018-11-01 | |||
| WO2014045400A1 | 2014-03-27 | |||
| WO2014030236A1 | 2014-02-27 | |||
| WO2014030236A1 | 2014-02-27 |
Foreign References:
| JP2013083407A | 2013-05-09 | |||
| JP2008215672A | 2008-09-18 | |||
| JP2004190917A | 2004-07-08 | |||
| JP2001019944A | 2001-01-23 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
Download PDF:
Previous Patent: REFRIGERATION CIRCUIT DEVICE AND REFRIGERATION CIRCUIT CONTROL METHOD
Next Patent: PEELING AND STICKING METHOD AND PROGRAM
Next Patent: PEELING AND STICKING METHOD AND PROGRAM