| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner capable of stabilizing a state of a refrigeration cycle in a comparatively short time, even when an R32 refrigerant and a capillary tube are used.SOLUTION: An outdoor unit control unit of an outdoor unit makes lapsed time before reaching target rotational frequency after a compressor is started at most two times (that is substantially M times of the time when 1<M≤N 1<N≤2) compared to the time when an R410A refrigerant is used. In this way, by moderating rotational frequency increase behavior of the compressor, extreme drop of an inlet refrigerant temperature in an R32 refrigerant is suppressed, and change in temperature balance of the entire indoor heat exchanger can be reduced. By such rotational frequency control, temperature drop is suppressed by increasing a minimum temperature of an inlet refrigerant temperature, and the time can be shortened until returning to the target temperature.SELECTED DRAWING: Figure 7 |
