Title:
REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/059635
Kind Code:
A1
Abstract:
In a first refrigeration cycle and a second refrigeration cycle, a refrigerant circuit (6) has: an intermediate flow path (41) that introduces a refrigerant into an intermediate pressure portion (21a) between a first compression portion (21) and a second compression portion (22, 23); and an intermediate cooler (17) that cools the refrigerant flowing in the intermediate flow path (41) with a heat medium. The first refrigeration cycle is a refrigeration cycle in which a heat source heat exchanger (13) is stopped, a first utilization heat exchanger (54) is used as a radiator, and a second utilization heat exchanger (64) is used as an evaporator. The second refrigeration cycle is a refrigeration cycle in which the heat source heat exchanger (13) and the first utilization heat exchanger (54) are used as radiators and the second utilization heat exchanger (64) is used as an evaporator. In the first refrigeration cycle, a controller (100) increases the cooling capacity of the intermediate cooler (17) when the condition indicating that the heating capacity of the first utilization heat exchanger (54) is excessive is satisfied.
Inventors:
TAGUCHI SHUICHI (JP)
TAKEGAMI MASAAKI (JP)
TAKEGAMI MASAAKI (JP)
Application Number:
PCT/JP2020/025183
Publication Date:
April 01, 2021
Filing Date:
June 26, 2020
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B1/10; F24F11/86; F25B1/00; F25B5/02; F25B6/02
Foreign References:
| JP2010127504A | 2010-06-10 | |||
| JP2014070822A | 2014-04-21 | |||
| JP2009097847A | 2009-05-07 | |||
| JP2009180427A | 2009-08-13 | |||
| JP2010156493A | 2010-07-15 | |||
| JP2004044921A | 2004-02-12 |
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
Download PDF: