| 摘要 |
<p>An air conditioner includes a refrigeration circuit that includes a refrigerant compressor (5) a four-way valve (6), an external heat exchanger (13), an expansion device (4), and an internal heat exchanger (7), these components being mounted in an external unit (2) and an internal unit (4), wherein the external heat exchanger is mounted in the external unit and the internal heat exchanger is mounted in the internal unit. The heat exchangers (7, 13) are connected to each other by means of a refrigerant piping (3) to form the refrigeration circuit. A control means (19, 12, 17) is provided for changing the expansion amount of the expansion device (9) according to the length of the refrigerant piping thereby adjusting the pressure differential in the refrigeration current. With this construction, it is possible to carry out the optimal operation for a longer length refrigerant piping, without the need to make the size of each unit larger. <IMAGE></p> |
