| 摘要 |
A refrigerant circuit ( 10 ) is formed by connecting, in the order given, a compressor ( 11 ), a four-way selector valve ( 12 ), an outdoor heat exchanger ( 13 ), an expansion valve ( 14 ), and an indoor heat exchanger ( 15 ) by a gas side pipe ( 31 ) and a liquid side pipe ( 32 ). The refrigerant circuit ( 10 ) is charged with a single refrigerant of R32 or with an R32/R125 mixed refrigerant whose R32 content is not less than 75% by weight. As an insulating material of an electric motor of the compressor ( 11 ), a resin material is used, and as an refrigeration oil a synthetic oil is used. When cooling rated capacity is not more than 5 kW, the liquid side pipe ( 32 ) is formed by use of a pipe whose inside diameter is less than 4.75 mm. |
