| 摘要 |
PURPOSE:To make a substantial increasing of starting characteristic in heating operation by a method wherein when a heating operation is performed, an indoor fan is operated at a super high speed only during a desired time in which a load is increased more than the specified value or after a specified time is elapsed from the starting of the operation. CONSTITUTION:When a heating operation is started, a high load is found and a high pressure is increased and the temperature TC of the indoor heat exchanger 5 is increased. A control part 22 may increase the operation speed of the indoor fan 7. In turn, an electric current I of the compressor motor is increased at once to a releasing point Is even if the indoor fan 7 is operated at a high speed. When it is increased more than Is (I>=Is), an operation fre quency of the compressor 1 is decreased down to a return point less than the releasing point Is, the operation frequency of the compresor 1 is increased again. When the current I is increased more than the releasing point Is, the control part 22 may operate the indoor fan 7 at the ultra high speed. Then, the high pressure is decreased and then the operating frequency of the compres sor 1 can be increased more than that of the prior art. Therefore, an increasing speed of the indoor temperature Ta is increased.
|
