| 摘要 |
A heat pump system using air as its heat source is disclosed. In this system, the refrigeration circuit consists of both a main refrigerant line and a refrigerant suction line. A heat accumulator, containing both a heat medium and a heat storage phase change material, is mounted on the refrigerant line at a position between the cooling mode and heating mode expansion valves. A heat-dissipating heat exchanger is mounted on the main refrigerant line, and is set in the accumulator. A subsidiary heat exchanger is installed around the inlet port of the outdoor heat exchanger, and is connected to the heat accumulator through heat medium lines with a circulating pump. The system also has a heat pipe consisting of both an evaporating part installed at the periphery of the heat-dissipating heat exchanger, and a heat dissipating part installed at the periphery of the heat accumulator and connected to the evaporating part through a connection pipe. First and second heat-absorbing heat exchangers are connected to the refrigerant suction line in parallel to each other such that the first and second heat-absorbing heat exchangers are respectively set in the heat dissipating part and the heat accumulator, and selectively operated in accordance with the temperature of refrigerant flowing through the suction line to be returned to the compressor.
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