发明名称 |
SUBLIMATION DEFROST SYSTEM AND SUBLIMATION DEFROST METHOD FOR REFRIGERATION APPARATUS |
摘要 |
A sublimation defrost system for a refrigeration apparatus including: a cooling device in a freezer, and includes a casing containing a heat exchanger pipe; a refrigerating device for cooling and liquefying a CO2 refrigerant; and a refrigerant circuit connected to the heat exchanger pipe permitting the cooled and liquefied CO2 refrigerant to circulate. The defrost system includes: a dehumidifier device; a CO2 circulation path in the heat exchanger pipe, an on-off valve in the heat exchanger; a circulating unit for the CO2 refrigerant; a first heat exchanger part exchanging heat between a brine as a first heating medium and the circulating CO2 refrigerant; and a pressure adjusting unit for the circulating CO2 refrigerant during defrosting so that a condensing temperature of the CO2 refrigerant becomes equal to or lower than a freezing point of a water vapor in the freezer inner air without a drain receiving unit. |
申请公布号 |
US2016187041(A1) |
申请公布日期 |
2016.06.30 |
申请号 |
US201414904283 |
申请日期 |
2014.11.25 |
申请人 |
MAYEKAWA MFG. CO., LTD. |
发明人 |
YOSHIKAWA Choiku;KAMIMURA Takeshi;FURUDATE Takahiro;FUKANO Shuji |
分类号 |
F25B47/02;F25B49/02;F25B7/00;F25B9/00 |
主分类号 |
F25B47/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Tokyo JP |