| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that the necessary amount of a refrigerant for a compressor cycle is different from that for a liquid pump cycle and, therefore, the refrigerant must be recovered from an accumulator, reserving excessive refrigerant, upon switching from a compressor operation into a liquid pump operation whereby an operation efficiency is lowered. SOLUTION: In an air conditioner constituted of a forced circulation cycle, consisting of a compressor, a condenser, a choking device and an evaporator which are connected sequentially, and a natural circulation cycle, consisting of the evaporator and the condenser which are connected thereto, a refrigerant reserving vessel is provided between the outlet port of the condenser and the choking device to reserve excessive refrigerant, generated by the difference of necessary amounts of refrigerant in respective operation modes of the forced circulation cycle and the natural circulation cycle, into the refrigerant reserving vessel.
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