| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat pump capable of effectively preventing the adherence of frost or the adherence and accumulation of snow in a heat absorbing heat exchanger (evaporator) while a primary operation is continued in a stable way by maintaining a high heat pump efficiency. SOLUTION: In a vapor compression heat pump, a refrigerant R is circulated in regular order of a compressor 1, to a hear radiating heat exchanger 2, to an expansion mechanism 5, to the heat absorbing heat exchanger 3, to a compressor 1, and the heat absorbing heat exchanger 3 functioning as an evaporator in the circulation of the refrigerant performs a heat absorbing action to outside air OA. In the refrigerant circulation path, a super-cooling device 9 using the outside air as a cooling source is interposed between the heat radiating heat exchanger 2 and the expansion mechanism 5. The super-cooling device 9 is provided adjacently to the windward part 3A of the heat absorbing heat exchanger 3 in an outside air ventilation passage F.
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