| 摘要 |
A refrigerant circuit, comprising a bypass circuit bypassing a fluid pipe side pipe (131) and a gas pipe side pipe (132) having, thereon, a receiver (121) for recovering fluid refrigerant, a fluid pipe motor-operated valve (128) installed in a fluid pipe side connection pipe (122) for connecting the receiver (121) to a fluid pipe side pipe (131), and a gas pipe motor-operated valve (129) installed in a gas pipe side connection pipe (123) for connecting the receiver (121) to the gas pipe side pipe (132), wherein the current heat exchanging capacity of an outdoor heat exchanger (103) is checked to judge on whether an excess refrigerant is present or absent so as to control the fluid pipe motor-operated valve (128) and the gas pipe motor-operated valve (129), whereby the amount of refrigerant in the receiver (121) can be controlled.
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