| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner capable of reducing error in determining adequacy or inadequacy of refrigerant amount while securing high-pressure protection and differential pressure, and suppressing production costs. SOLUTION: This refrigerant amount determining method for determining the adequacy or inadequacy of the refrigerant amount in a refrigerant circuit in the air conditioning device 1 comprising a heat source unit 2 having a compressor 21, a heat source-side heat exchanger 23 and a cooling heat source adjusting means 27, an utilization unit 4 having an utilization-side heat exchanger 41, an expanding mechanism 33, and the refrigerant circuit 10 including a liquid refrigerant communication pipe 6 and a gas refrigerant communication pipe 7, and capable of performing at least a cooling operation, the adequacy or inadequacy of the amount of refrigerant filled in the refrigerant circuit is determined on the basis of a first undercooling degree correction value led out by correcting a degree of undercooling or the operational status amount by at least one of an outside air temperature, a condensation temperature and a value obtained by quantifying cooling action. COPYRIGHT: (C)2010,JPO&INPIT
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