Title:
二酸化炭素循環・冷却システムにおけるデフロスト装置
Document Type and Number:
Japanese Patent JP5482689
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To save energy by transferring waste heat of an ammonia refrigerant circuit to a carbon dioxide refrigerant circuit side for cooling and recovering the waste heat of the ammonia refrigerant circuit to use for defrosting.SOLUTION: A carbon dioxide circulation cooling system is provided, which includes: a carbon dioxide refrigerant circuit 13 circulating through a load-side cooler 11 having a cooling fan 11a and through a cascade condenser 12; an ammonia refrigerant circuit 14 circulating through the cascade condenser 12; a hot gas heat exchanger 16 converting the carbon dioxide refrigerant into hot gas by heat generation induced in the ammonia refrigerant; a defrosting circuit 15 supplying the carbon dioxide hot gas into the load-side cooler 11 for defrosting; and switching means switching over the carbon dioxide refrigerant circuit 13 to the defrosting circuit 15 and vice versa to connect to the load-side cooler 11. The system also includes a control unit 10, which stops the cooling fan 11a of the load-side cooler 11 on receiving a defrosting signal, and switches on a defrosting operation after a prescribed time.
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Inventors:
Saishoji Koei
Takeda Takeshi
Masahiro Nishihara
Takeda Takeshi
Masahiro Nishihara
Application Number:
JP2011035814A
Publication Date:
May 07, 2014
Filing Date:
February 22, 2011
Export Citation:
Assignee:
Toyo Manufacturing Co., Ltd.
International Classes:
F25B47/02; F25B1/00; F25B7/00
Domestic Patent References:
| JP2010181093A | ||||
| JP7174441A | ||||
| JP62162855A | ||||
| JP63101765U | ||||
| JP3140766A |
Attorney, Agent or Firm:
Takakichi Hayashi