Title:
冷凍装置
Document Type and Number:
Japanese Patent JP7216151
Kind Code:
B2
Abstract:
An object is to provide a novel multi-stage refrigeration apparatus. The object is achieved by a refrigeration apparatus comprising a user-side heat transfer cycle that includes a user-side compressor, a user-side heat exchanger, a user-side pressure-reducing device, and a user-side cascade heat exchanger, and that circulates a user-side refrigerant; a heat-source-side heat transfer cycle that includes a heat-source-side compressor, a heat-source-side heat exchanger, a heat-source-side pressure-reducing device, and a heat-source-side cascade heat exchanger, and that circulates a heat-source-side refrigerant; a cascade heat exchanger configured to exchange heat between the user-side refrigerant of a user-side condenser and the heat-source-side refrigerant of a heat-source-side evaporator; and a control device, the user-side refrigerant having a boiling point of -30°C or more and 25°C or less, and the heat-source-side refrigerant having a boiling point of -55°C or more and less than -30°C.
Inventors:
Shun Okubo
Tachimi Tsuchiya
Tsubasa Nakagami
Takuro Yamada
Tokuno Satoshi
Tachimi Tsuchiya
Tsubasa Nakagami
Takuro Yamada
Tokuno Satoshi
Application Number:
JP2021111974A
Publication Date:
January 31, 2023
Filing Date:
July 06, 2021
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F25B7/00; F25B1/00
Domestic Patent References:
| JP2016166714A | ||||
| JP2015529788A | ||||
| JP5133649A |
Foreign References:
| WO2015140872A1 | ||||
| WO2019124402A1 | ||||
| WO2020066922A1 |
Attorney, Agent or Firm:
Saegusa International Patent Office
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