| 摘要 |
PURPOSE: A heat pump system using air as a heat source is provided to increase a coefficient of performance by favorably evaporating refrigerant liquid in an outdoor heat exchanger if the air temperature is low in a cooling operation and to increase the coefficient of performance by dry-saturating and overheating-vaporizing refrigerant steam flowed into a compressor. CONSTITUTION: A heat pump system is composed of a basic cooling circuit(1), a heat storage(10), a heat exchanger(20), a heat pipe(30), and first and second heat exchangers(40,41). The basic cooling circuit successively couples a compressor(2), a 4-way valve(3), an indoor heat exchanger(4), a cooling expansion valve(5), a heating expansion valve(6), and an outdoor heat exchanger(7) to a conduit(8) and couples the 4-way valve and the compressor to a suction conduit(9). The heat storage is disposed between the cooling and heating expansion valves to fill a heat medium(12) and to embed a latent heat storing material(13) and a re-condensing heat exchanger(11) installed between the cooling and heating expansion valves. The heat exchanger is connected to the heat storage with a return pipe(22) mounted with a supply pipe(21) and a circulating pump(23) and is installed to the suction side of the outdoor heat exchanger. The heat pipe has an evaporating unit(31) installed to the outer periphery of the re-condensing heat exchanger and a radiating unit(32) connected to the evaporating unit by a connecting pipe(33) and positioned out of the heat storage. The first and second heat exchangers are mounted with parallel to the suction conduit and embedded in the radiating unit and the heat storage to optionally act to the temperature of the refrigerant steam sucked into the compressor.
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