| 摘要 |
PROBLEM TO BE SOLVED: To enable an air conditioner equipped with a two-stage compressor to always perform efficient operation with necessary capability. SOLUTION: An air conditioner is provided with a control means (20) for switching between single-stage compression and two-stage compression, based on the ambient air temperature (T) and a load (Q). In particular, during heating operation, it performs two-stage compression, when the ambient air temperature (T) is lower than a predetermined standard temperature (Ta), while when the ambient air temperature (T) is higher than the predetermined temperature (Ta), it performs single-stage compression, if the load (Q) is smaller than a standard load (Qa) that is previously determined for the ambient air temperature, and performs the two-stage compression if the load (Q) is not smaller than the standard load (Qa).
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