| 摘要 |
PURPOSE:To provide the air conditioner equipped with a frequency converter, capable of permitting the capacity control of a plurality of compressors in conjunction with each other, by a method wherein a plurality of compressors are employed in order to cope with stepwise and wide load fluctuation efficiently. CONSTITUTION:In case a part of a plurality of coolers 4 becomes unnecessary, control of capacity of the compressor 1 becomes necessary in accordance with reduced thermal load. The capacity control is effected by controlling the number of operating sets among a plurality of compressors 1 or the individual minimum capacity operation of the compressor 1 is effected by reducing the frequency by a frequency converter 7. On the contrary, in case the thermal load is increased, it is necessary to increase the number of operating coolers 4. In order to cope therewith, the frequency is increased to (n) times by the frequency converter 7 and either one of the compressors 1 is employed alternately in accordance with the condition of the side of load to achieve the load side cooling capacity of 2Xn times substantially. |
