| 摘要 |
PURPOSE: A heat pump air conditioning system capable of performing floor heating and hot-water supply at the same time is provided to generate hot water stably without variation of coolant temperature in both winter and summer seasons. CONSTITUTION: A heat pump air conditioning system capable of performing floor heating and hot-water supply at the same time comprises a compressor(1), an outdoor unit(4), an indoor unit(2), an expansion valve(3), a four-way valve(5a), and a backflow prevention valve(5b). The compressor compresses coolant under high pressure and high temperature. The expansion valve decompresses the coolant having passed through the outdoor unit or the indoor unit. The four-way valve controls the flow direction of the coolant toward the outdoor unit or the indoor unit. The backflow prevention valve is installed between the outdoor unit and the indoor unit to prevent backflow of the coolant. |
