| 摘要 |
PURPOSE:To simultaneously perform a cooling and heating operations by a plurality of indoor heat exchangers by disposing a three-way valve in a conduit for connecting an outdoor heat exchanger to the indoor exchangers to divide it into a high temperature and high pressure gas tube and a low temperature and low pressure gas tube. CONSTITUTION:In order to diffuse hot air from an indoor heat exchanger 5a and cold air from an indoor heat exchanger 5b, a four-way valve 2, a three-way valve 9 and a three-way valve 11 are disposed as shown, the valve 8 of the exchanger 5a is closed, and the valve 8 of the exchanger 5b is opened. Part of gas refrigerant of high temperature and high pressure discharged from a compressor 1 is fed to an outdoor heat exchanger 3 to become low temperature and low pressure gas refrigerant, which is fed from a conduit 10 branched between a pressure reduction unit 4 and the valve 9 to the exchanger 5b through the valve 11 thereby cooling a room. The remainder of the gas refrigerant of high temperature and high pressure is fed to the exchanger 5a through a conduit 14 and a connecting conduit 15 to diffuse hot air in the room. |
