| 摘要 |
PURPOSE: A defrosting device of a cooling cycle is provided to implement quick defrosting and keep stored products fresh by evenly transferring the heat of brine to the heat transfer tube and fin of a cooling device. CONSTITUTION: A defrosting device of a cooling cycle comprises a cooling cycle(10), a brine heating unit(20), and a defrosting heat exchanger(29). The cooling cycle comprises a compressor, a condenser, an expansion valve, and a cooling device. The brine heating unit is installed between the compressor and the condenser of a refrigerant pipe. The brine heating unit comprises a bypass pipe in which a defrosting condenser containing a heat-absorption heat exchanger is installed. A brine tank is connected to the heat-absorption heat exchanger so that high-temperature high-pressure refrigerant vapor compressed by the compressor is condensed by the defrosting condenser and brine circulated through the heat-absorption heat exchanger is heated by the condensing heat and circulated to the defrosting heat exchanger. The defrosting heat exchanger is connected to the brine heating unit, a supply pipe, and a return pipe to transfer heat to the cooling device.
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